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Preprint REVIEW | doi:10.20944/preprints201809.0148.v1

The Role of NCOA4-Mediated Ferritinophagy in Iron Homeostasis

Naiara Santana-Codina, Joseph D. Mancias

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: NCOA4, ferritinophagy, iron homeostasis, erythropoiesis, ferroptosis, cancer

Online: 9 September 2018 (16:13:18 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202001.0177.v1

A Study on Reduction of Copper Smelting Slag by Carbon for Recycling into Metal Values and Cement Raw Material

Urtnasan Erdenebold, Jei-Pil Wang

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: copper smelting slag; pig iron; fayalite; recovery

Online: 17 January 2020 (04:32:53 CET)

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Preprint REVIEW | doi:10.20944/preprints202012.0583.v1

Insights Into the Roles of the Sideroflexins / SLC56 Family in Iron Homeostasis and Iron-Sulfur Biogenesis

Nesrine Tifoun, José M. De las Heras, Arnaud Guillaume, Sylvina Bouleau, Bernard Mignotte, Nathalie Le Floch

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: sideroflexin; mitochondria; mitochondrial transporters; iron homeostasis; iron-sulfur cluster; heme biosynthesis; one-carbon metabolism; ferroptosis; ferritinophagy.

Online: 23 December 2020 (10:40:15 CET)

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Preprint REVIEW | doi:10.20944/preprints202206.0253.v1

Structural Bioinformatics and Deep Learning of Metalloproteins: Recent Advances and Applications

Claudia Andreini, Antonio Rosato

Subject: Biology And Life Sciences, Biophysics Keywords: Bioinorganic chemistry; metal-binding; structural biology; zinc; iron; copper; transition metals

Online: 17 June 2022 (09:30:07 CEST)

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Preprint REVIEW | doi:10.20944/preprints202401.1066.v1

Toxicity Tolerance in the Carcinogenesis of Environmental Cadmium

Aleksandar Cirovic, Soisungwan Satarug

Subject: Public Health And Healthcare, Public, Environmental And Occupational Health Keywords: cadmium; cancer; cell transformation; copper; intestinal absorption; iron store status; zinc transporters

Online: 15 January 2024 (10:27:42 CET)

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Preprint REVIEW | doi:10.20944/preprints202108.0088.v1

Nutrition and Metabolism of Minerals in Fish

Santosh P Lall, Sadasivam J Kaushik

Subject: Biology And Life Sciences, Animal Science, Veterinary Science And Zoology Keywords: Minerals, Trace elements, Fish, Copper, Iron, Selenium, Manganese, Zinc, Calcium, Phosphous, Magnesium

Online: 3 August 2021 (14:57:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202402.0389.v1

Comparative Analysis of Metal Electrodepositon Rates towards Formation of High-Entropy WFeCoNiCu Alloy

Tomasz Ratajczyk, Mikołaj Donten

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: tungsten; iron; cobalt; nickel; copper; alloys; high-entropy alloy; electrodeposition; induced codeposition; deposition rates

Online: 7 February 2024 (11:53:07 CET)

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Working Paper REVIEW

Brain-barrier Regulation, Metal (Cu, Fe) Dyshomeostasis and Neurodegenerative Disorders in Man and Animals

Susan Haywood

Subject: Medicine And Pharmacology, Neuroscience And Neurology Keywords: blood-brain barrier; copper/iron homeostasis; neurodegenerative (Alzheimers, Parkinsons, Prion) disease; North Ronaldsay sheep

Online: 27 May 2019 (12:27:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0014.v1

Effect of Traditional Household Processes on Iron, Zinc and Copper Bioaccessibility in Black Bean (Phaseolus Vulgaris L.)

Sabrina Feitosa, Ralf Greiner, Ann-Katrin Meinhardt, Alexandra Müller, Deusdélia T. Almeida, Clemens Posten

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: beans; iron, zinc and copper bioaccessibility; myo-inositol phosphates; anti-nutrients; polyphenols; household processing

Online: 2 July 2018 (13:19:42 CEST)

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Preprint REVIEW | doi:10.20944/preprints201810.0429.v1

Copper-Fructose Interactions: A Novel Mechanism in the Pathogenesis of NAFLD

Ming Song, Miriam Vos, Craig McClain

Subject: Medicine And Pharmacology, Gastroenterology And Hepatology Keywords: Copper; fructose; Kupffer cell (KC); iron; non-alcoholic fatty liver disease (NAFLD); metabolic syndrome; gut microbiota

Online: 18 October 2018 (16:57:06 CEST)

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Preprint REVIEW | doi:10.20944/preprints202312.1743.v1

Is It Time to Alter Standard of Care for Iron Deficiency /Iron Deficiency Anemia in Reproductive-Age Women?

Mrutyunjaya B. Bellad, Anmol Suresh Patted, Richard Derman

Subject: Public Health And Healthcare, Public Health And Health Services Keywords: Iron deficiency, Iron deficiency anemia, oral iron supplementation, intravenous iron supplementation, IV iron

Online: 22 December 2023 (11:50:31 CET)

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Preprint REVIEW | doi:10.20944/preprints202311.1158.v1

Parenteral Iron Therapy for Pediatric Patients

Elpis Mantadakis, Sonia Alexiadou, Panagiota Zikidou

Subject: Medicine And Pharmacology, Hematology Keywords: iron deficiency; iron deficiency anemia; intravenous iron; iron sucrose; ferric carboxymaltose; iron isomaltoside; inflammatory bowel diseases

Online: 20 November 2023 (02:41:19 CET)

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Preprint REVIEW | doi:10.20944/preprints202304.1124.v2

Copper-Based Antibiotic Strategies: Exploring applications in the hospital setting and the targeting of Cu Regulatory Pathways and Current Drug Design Trends

Aixa M. Orta-Rivera, Yazmary Meléndez-Contés, Nataniel Medina-Berríos, Adriana M. Gómez-Cardona, Andrés Ramos-Rodríguez, Claudia Cruz-Santiago, Christian González-Dumeng, Janangelis López, Jansteven Escribano, Jared J. Rivera-Otero, Josean Díaz-Rivera, Sebastián C. Díaz-Vélez, Zulemaría Feliciano-Delgado, Arthur D. Tinoco

Subject: Chemistry And Materials Science, Other Keywords: copper coordination; copper homeostasis; antibacterial; antibiotic

Online: 23 May 2023 (08:01:12 CEST)

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Preprint REVIEW | doi:10.20944/preprints202103.0523.v1

'Copper and Bronze in Art' and the Search for Rare Corrosion Products

Gerhard Eggert

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: basic copper(II) formate; ‘Black Spots’; chalconatronite; copper(II) hydroxide; copper sulfide; curly malachite; namuwite; sodium copper(II) formate; verdigris

Online: 22 March 2021 (11:50:06 CET)

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Preprint ARTICLE | doi:10.20944/preprints202107.0119.v1

Copper, Iron, and Aluminium Electrochemical Corrosion Rates and Intrinsic Diffusivitives Dependence on Temperature Investigations

Mykhaylo Viktorovych Yarmolenko

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Keywords: electrochemical corrosion, metallic coatings, electrolysis, diffusion, intermetallic compounds, phases formation kinetics, copper, aluminium, iron, Kirkendall-Frenkel porosity, Kirkendall sh

Online: 5 July 2021 (16:24:31 CEST)

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Our investigations show that electrochemical corrosion of copper is faster than electrochemical corrosion of aluminium at temperatures below 100oC. Literature data analysis shows that the Al atoms diffuse faster than the Cu atoms at temperatures higher than 475oC, Al rich intermetallic compounds (IMCs) are formed faster in the Cu-Al system, and the Kirkendall plane shifts toward Al side. Electrochemical corrosion occurs due to electric current and due to diffusion. An electronic devise working time, for example, depends on initial copper cover thickness on aluminium wire, connected to the electronic devise, temperature, and volume and dislocation pipe diffusion coefficients, so copper, iron, and aluminium electrochemical corrosion rates are investigated experimentally at room temperature and at temperature 100oC. Intrinsic diffusivities ratios of copper and aluminium at different temperatures and diffusion activation energies in the Cu-Al system are calculated by proposed here methods using literature experimental data. Dislocation pipe and volume diffusion activation energies of pure iron are calculated separately by earlier proposed method using literature experimental data. Aluminium dissolved into NaCl solution as the Al3+ ions at room temperature and at temperature 100oC, iron dissolved into NaCl solution as the Fe2+ (not Fe3+) ions at room temperature and at temperature 100oC, copper dissolved into NaCl solution as the Cu+ ions at room temperature and as the Cu+ and the Cu2+ ions at temperature 100oC. It is founded experimentally that copper corrosion is higher than aluminium corrosion, and ratio of electrochemical corrosion rates, kCu/kAl>1, decreases with temperature increasing, although iron electrochemical corrosion rate doesn’t depend on temperature below 100oC. It is obvious, because melting point of iron is more higher then melting point of copper or aluminium. It is calculated that copper electrochemical corrosion rate is approximately equal to aluminium electrochemical corrosion at temperature about 300oC, so copper can dissolve into NaCl solution mostly as the Cu2+ ions at temperature about 300oC. Ratio of intrinsic diffusivities, DCu/DAl <1, increases with temperature increasing, and intrinsic diffusivity of aluminium could be approximately equal to intrinsic diffusivity of copper at temperature about 460oC.

Preprint ARTICLE | doi:10.20944/preprints201812.0208.v1

Modular Rotor Single Phase Field Excited Flux Switching Machine with Non-Overlapped Windings

Lutf Ur Rahman, Faisal Khan, Areej Fatima, Muhammad Afzal Khan, Naseer Ahmad, Mohsin Shahzad, Hamid Ali Khan, Hazrat Ali

Subject: Engineering, Electrical And Electronic Engineering Keywords: flux switching machine; modular rotor; non-overlap winding; magnetic flux analysis; iron losses; copper loss; stress analysis; finite element method

Online: 18 December 2018 (03:41:08 CET)

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Preprint ARTICLE | doi:10.20944/preprints202307.1234.v1

Comparison of Efficiency and Side Effects of Daily and Alternate Day Oral Iron

Ibrahim Nahit Sendur, Umit Yavuz Malkan

Subject: Medicine And Pharmacology, Hematology Keywords: Iron deficiency anemia; oral iron; side effects

Online: 18 July 2023 (14:17:18 CEST)

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Introduction: In the recent years alternate day dosing has been recommended in iron deficieny treatment. The aim of this study is to compare the efficacy and side effects of oral iron treatments given daily 1x1, alternate day 1x1 and 2x1 alternate day dosing in iron deficieny anemia patients. Methods: A total of 52 patients with a diagnosis of iron deficiency anemia with serum ferritin level of 25 µg/L or less were included in this retrospective study. Statistical analyzes were done with SPSS V.25. Results: The patients included in our study were between the ages of 18-51. All of the patients included in the study were female. A statistically significant increase was found between 0-14 days(p<0.001), 14-28 days(p<0.001) and 0-28 days(p<0.001) hemoglobin values in all patients. There was no statistically significant difference between 0-14 days (p=0.397) and 0-28 days(p=0.310) ferritin values in all patients. A statistically significant difference was found between 14-28 days(p<0.001) ferritin values. When the rate of change of hemoglobin and ferritin values between the groups was compared and no statistically significant difference was observed between the groups. The rate of change of ferritin values for 14-28 days was significant (p=0.012). There was no significant difference in the frequency of symptoms in the 14th day and 28th day controls for each group (p>0.05). The incidence of metallic taste and bloating symptoms was found to be statistically significant in the third control in the group with 2x1 drug use alternate day (p=0.094). Discussion: The only difference in efficacy was observed in ferritin values between 14th and 28th days. The increase in ferritin values was higher in the group that used 1x1 oral iron every day. However, since no difference was observed between the groups in terms of ferritin and hemoglobin values on days 0 and 28, all three groups were considered equally efficient. Side effects were mainly gastrointestinal side effects. Since the group that received 2x1 oral treatment alternate day had a statistically significantly higher rate of side effects, the patients’ treatment tolerance will be lower compared to the other groups. In conlusion, there is no difference in efficacy and side effects between the patient groups receiving 1x1 daily and 1x1 alternate day oral iron therapy, so 1x1 use alternate day is the most appropriate treatment method for oral iron therapy in terms of patient tolerance, adherence to treatment and pharmacoeconomics.

Preprint REVIEW | doi:10.20944/preprints202308.1504.v1

Exploring Copper Oxide and Copper Sulfide for Non-Enzymatic Glucose Sensors: Current Progress and Future Directions

Nonkululeko Miya, Lerato F.E Machogo-Phao, Bulelwa Ntsendwana

Subject: Chemistry And Materials Science, Electrochemistry Keywords: Copper oxide; Copper sulfide; Non-enzymatic; Glucose; Electrochemical; Sensor

Online: 22 August 2023 (09:54:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202312.0896.v1

Rib Fractures in Lambs in South Australia

Colin Trengove, Kym Abbott, Geoffrey Judson, Rick Tearle, Kiro R Petrovski

Subject: Biology And Life Sciences, Animal Science, Veterinary Science And Zoology Keywords: bone; carcass; copper

Online: 12 December 2023 (13:32:26 CET)

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Preprint REVIEW | doi:10.20944/preprints202306.0213.v1

Understanding the Intricacies of Iron Overload Associated With β-Thalassemia: A Comprehensive Review

Subhangi Basu, Motiur Rahaman, Tuphan Kanti Dolai, Praphulla Chandra Shukla, Nishant Chakravorty

Subject: Medicine And Pharmacology, Hematology Keywords: β-thalassemia; iron overload; iron chelators; TDT; NTDT

Online: 2 June 2023 (14:27:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202212.0353.v1

Metallurgical Quality of Cast Iron Made from Steel Scrap and Possibilities of its Improvement

Peter Futas, Alena Pribulova, Jozef Petrik, Peter Blasko, Andrea Junakova, Vladimir Sabik

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: synthetic cast iron; charge materials; steel scrap; nitrogen in cast iron iron; mechanical properties

Online: 20 December 2022 (04:05:55 CET)

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Preprint ARTICLE | doi:10.20944/preprints202304.0600.v1

Iron Complexes With Antarctic Krill-Derived Peptides Show Su-Perior Effectiveness to Their Original Protein-Iron Complexes in Mice With Iron Deficiency Anemia

Shengjie Hu, Songyi Lin, Qi Feng, Xueqing He, Haowei Xu, Lei Chen, Na Sun

Subject: Biology And Life Sciences, Food Science And Technology Keywords: IDA mice; Antarctic krill peptide-iron; iron-regulated genes; iron bioavailability; in vivo antioxidant capacity

Online: 20 April 2023 (03:15:22 CEST)

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Preprint REVIEW | doi:10.20944/preprints202305.1989.v1

Safety of Iron Chelation Therapies in Kidney Disease

Timothy Nguyen, Zhe Amy Wang

Subject: Medicine And Pharmacology, Medicine And Pharmacology Keywords: Iron chelation; Iron overload; kidney disease; deferoxamine; deferasirox; deferiprone

Online: 29 May 2023 (07:26:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202111.0173.v1

Effect of Nutritional Factors and Copper on the Regulation of Laccase Enzymes Production in Pleurotus ostreatus

Dinary Durán-Sequeda, Daniela Suspes, Estibenson Maestre, Manuel Alfaro, Gumer Pérez, Lucía Ramírez, Antonio G. Pisabarro, Rocío Sierra

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: Multi-copper oxidase; copper-transporter; nutrient-sufficient conditions, white-rot fungus

Online: 9 November 2021 (13:39:50 CET)

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Preprint ARTICLE | doi:10.20944/preprints202306.0429.v1

Preliminary TC Calculations for Iron-Based Superconductivity in NaFeAs, LiFeAs, FeSe and Nanostructured FeSe/SrTiO₃ Superconductors

Chi Ho Wong, Rolf Lortz

Subject: Chemistry And Materials Science, Other Keywords: Iron-based Superconductivity

Online: 6 June 2023 (09:43:32 CEST)

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Many theoretical models of iron-based superconductors have been proposed but Tc calculations based on the models are usually missing. We have chosen two models of iron-based superconductors in the literature and then compute the Tc values accordingly: Recently two models have been announced which suggest that superconducting electron concentration involved in the pairing mechanism of iron-based superconductors may have been underestimated, and that the antiferromagnetism and the induced xy potential may even have a dramatic amplification effect on electron-phonon coupling. We use bulk FeSe, LiFeAs and NaFeAs data to calculate the Tc based on these models and test if the combined model can predict the superconducting transition temperature (Tc) of the nanostructured FeSe monolayer well. To substantiate the recently announced xy potential in the literature, we create a two-channel model to separately superimpose the dynamics of the electron in the upper and lower tetrahedral plane. The results of our two-channel model support the literature data. While scientists are still searching for a universal DFT functional that can describe the pairing mechanism of all iron-based superconductors, we base on the ARPES data to propose an empirical combination of DFT functional for revising the electron-phonon scattering matrix in the superconducting state, which ensures that all electrons involved in iron-based superconductivity are included in the computation. Our computational model takes into account this amplifying effect of antiferromagnetism and the correction of the electron-phonon scattering matrix together with the abnormal soft out-of-plane lattice vibration of the layered structure, which allows us to calculate theoretical Tc values of LiFeAs, NaFeAs and FeSe as a function of pressure that correspond reasonably well to the experimental values. More importantly, by taking into account the interfacial effect between an FeSe monolayer and its SrTiO3 substrate as an additional gain factor, our calculated Tc value is up to 91 K high, and provides evidence that the strong Tc enhancement recently observed in such monolayers with Tc reaching 100 K may be contributed from the electrons within the ARPES range.

Preprint ARTICLE | doi:10.20944/preprints201807.0175.v1

Computational Investigation on the Enantioselective Copper(I)-Catalyzed Addition of Enynes to Ketones

Hanwei Li, Mingliang Luo, Guohong Tao, Song Qin

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: copper-catalysed; enantioselective; DFT

Online: 10 July 2018 (11:54:41 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202312.1984.v1

Preoperative Intravenous Ferric Carboxymaltose Improves Recovery from Anemia in Patients Undergoing Revision Joint Arthroplasty: A Randomized Controlled Trial

Hong Yeol Yang, Kyung soon Park, Hyun Ho Shin, Ji Hoon Choi, Jong Keun Seon

Subject: Medicine And Pharmacology, Orthopedics And Sports Medicine Keywords: revision joint arthroplasty; iron supplementation; ferric carboxymaltose; hemoglobin; iron metabolism

Online: 26 December 2023 (11:00:22 CET)

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(1) Background: Ferric carboxymaltose (FCM) is an intravenous (IV) high-dose iron that is effective in the treatment of iron deficiency anemia. This study was to determine if preoperative IV FCM administration could improve recovery from postoperative anemia in patients undergoing revision total joint arthroplasty. (2) Methods: This prospective randomized controlled study analyzed 82 patients undergoing revision total joint arthroplasty during a single hospitalization. Patients in the iron group (n = 41) were administered 1000 mg of IV FCM two weeks preoperatively, while those in the control group (n = 41) were not. Moreover, patients with anemia defined as a preoperative suboptimal Hb concentration <13.0 g/dl were compared according to IV FCM administration. The absolute Hb levels and changes in Hb levels, iron profiles, transfusion rate, and EuroQOL 5-dimension (EQ-5D) scores were compared. (3) Results: There were no significant differences in recovery of Hb levels at each timepoint between the two groups; however, the changes in Hb levels from baseline to four weeks postoperatively showed marginally significant differences favoring the iron group (p = 0.052). However, for preoperatively anemic patients, the change in hemoglobin (Hb) levels between baseline and four weeks postoperatively was significantly better in the iron group than in the control group (iron group [n = 26], −0.3 ± 0.7 g/dL vs. control group [n = 27], −0.9 ± 0.8 g/dL; p = 0.040), although the absolute Hb levels, transfusion rates, and patient quality of life were comparable (all p > 0.05). The iron group showed improved iron metabolite levels including serum ferritin and transferrin saturation four weeks postoperatively, and no adverse events associated with IV FCM administration occurred in either group. (4) Conclusions: Preoperative IV FCM in anemic individuals undergoing revision joint arthroplasty was effective in accelerating recovery from surgery-related anemia by improving Hb levels without any adverse events, despite similar actual Hb levels between the groups. Our findings are clinically relevant and can facilitate determination of the suitability of IV FCM as a safe and reliable protocol for iron supplementation for anemia correction.

Preprint REVIEW | doi:10.20944/preprints201810.0189.v1

Iron Supplementation in Suckling Piglets: an Ostensibly Easy Therapy of Neonatal Iron Deficiency Anemia

Mateusz Szudzik, Rafał R. Starzyński, Aneta Jończy, Rafał Mazgaj, Małgorzata Lenartowicz, Paweł Lipiński

Subject: Biology And Life Sciences, Food Science And Technology Keywords: hepcidin, iron deficiency anemia, iron dextran, neonatal period, pig, supplementation

Online: 9 October 2018 (15:34:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201811.0279.v1

CRISP-R/Cas9 Mediated Deletion of Copper Transport Genes CTR1 and DMT1 in NSCLC Cell Line H1299. Biological and Pharmacological Consequences

Ekaterina Y. Ilyechova, Elisa Bonaldi, Iurii A. Orlov, Ekaterina Skomorokhova, Ludmila V. Puchkova, Massimo Broggini

Subject: Biology And Life Sciences, Cell And Developmental Biology Keywords: copper importers CTR1 and DMT1; CRICPR-Cas9; cisplatin; silver; signaling; copper homeodynamics

Online: 12 November 2018 (10:05:01 CET)

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Preprint REVIEW | doi:10.20944/preprints202402.1252.v1

Regulatory and Sensing Iron-Sulfur Clusters: New Insights and Unanswered Questions

Anna M. SantaMaria, Tracey A. Rouault

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Iron-sulfur clusters; iron metabolism; iron sensing; IRE; PAIR; Aft1/2; IRP1/2; RirA; Yap5; ACO1; IREB2; HSCB

Online: 22 February 2024 (09:23:28 CET)

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Preprint ARTICLE | doi:10.20944/preprints202308.1352.v1

Oral Iron Absorption of Ferric Citrate Hydrate and Hepcidin-25 in Hemodialysis Patients: A Prospective, Multicenter, Observational Riona-Oral Iron Absorption Trial

Naohisa Tomosugi, Yoshitaka Koshino, Chie Ogawa, Kunimi Maeda, Noriaki Shimada, Kimio Tomita, Shoichiro Daimon, Tsutomu Shikano, Kazuyuki Ryu, Toru Takatani, Kazuya Sakamoto, Satonori Ueyama, Daisuke Nagasaku, Masato Nakamura, Shibun Ra, Masataka Nishimura, Chieko Takagi, Yoji Ishii, Noritoshi Kudo, Shinsuke Takechi, Takashi Ishizu, Takamoto Yanagawa, Masamichi Fukuda, Yutaka Nitta, Takayuki Yamaoka, Taku Saito, Suzuko Imayoshi, Momoyo Omata, Joji Oshima, Akira Onozaki, Hiroaki Ichihashi, Yasuhisa Matsushima, Hisahito Takae, Ryoichi Nakazawa, Koichi Ikeda, Masato Tsuboi, Keiko Konishi, Shouzaburo Kato, Maki Ooura, Masaki Koyama, Tsukasa Naganuma, Makoto Ogi, Shigeyuki Katayama, Toshiaki Okumura, Shigemi Kameda, Sayuri Shirai

Subject: Medicine And Pharmacology, Urology And Nephrology Keywords: oral iron absorption; ferric citrate hydrate; hemodialysis; hepcidin-25; iron shift

Online: 18 August 2023 (11:20:29 CEST)

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Working Paper ARTICLE

Pyrometallurgical Removal of Arsenic from Dusts Collected in Electrostatic Precipitators of Copper Part II:-Dust from a Fluidized Bed Roasting Furnace

Hector Henao, Ignacio Paredes, Rodrigo Diaz, Javier Ortiz

Subject: Engineering, Chemical Engineering Keywords: Copper smelter dust; electrostatic precipitators of copper; removal of arsenic; sulphidisation; roasting process.

Online: 20 August 2020 (09:55:21 CEST)

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Working Paper ARTICLE

Pyrometallurgical Removal of Arsenic from Dusts Collected in Electrostatic Precipitators of Copper, Part I-Dust from a Flash Smelting Furnace

Hector Henao, Ignacio Paredes, Rodrigo Diaz, Javier Ortiz

Subject: Engineering, Chemical Engineering Keywords: copper smelter dust; electrostatic precipitators of copper; removal of arsenic; sulphidation; roasting process

Online: 18 August 2020 (07:39:38 CEST)

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This paper (the first of a series of two) seeks to describe the experimental results of removing arsenic from dust collected in electrostatic precipitators of copper into the pyro-metallurgy gas cleaning systems. The first work corresponds to the treatment of dust contained in gas off generated in the copper Flash Smelting Furnace process (FS dust), while the second focuses on the treatment of dust generated from a Fluidized Bed Roasting Furnace (RP dust). The dust is complex sulphur-oxide-metals with concentrations of copper above 10 wt % and relatively high concentrations of silver. Due to the dust has an arsenic’s concentration above 5 wt %, makes it difficult to recover valuable metals through hydro-metallurgical processes or by direct recirculation of the dust into a smelting furnace. Thus, the development of pyrometallurgical processes aimed to reduce the concentration of arsenic in dust is the main purpose of this study, particularly the production of a material suitable for recirculation in smelting operations. The works conducted provide a detailed characterization of the dust, including Quantitative Evaluation of Minerals by Scanning Electron Microscopy (QEMSCAN), Scanning electron microscope-Energy Dispersive X-ray analysis (SEM/EDS), X-ray diffraction (XR-D), elemental chemical analysis using Atomic Adsorption (A. A.) and X-Ray Fluorescence (X-RF). By considering that arsenic volatilization requires a process of reduction-sulphidation-volatilization, the works explore the roasting of mixtures of copper concentrate/dust, sulphur/dust and pyrrhotite/dust. The degree of volatilization was determined by elemental chemical analysis of arsenic in the mixture after and before the roasting process. The results indicated the effect of parameters such as temperature, gas flow, gas composition and the ratio of mixtures (concentrate, sulphur or pyrrhotite)/dust on the volatilization of arsenic. The findings indicate that the concentration of arsenic in the FS dust can be reduced to a relatively low level (<0.5 wt %), allowing to the material to be recirculated into smelting processes.

Preprint ARTICLE | doi:10.20944/preprints202305.0183.v1

Effects of Green Tea Polyphenols on Inflammation and Iron Status

Mary Jorgenson, Sixtus Aguree, Kevin L Schalinske, Manju Reddy

Subject: Medicine And Pharmacology, Dietetics And Nutrition Keywords: Iron; inflammation; EGCG; hepcidin

Online: 4 May 2023 (04:14:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202110.0040.v1

Comprehensive Study for Impure and Pure Casts of Aluminum and Copper

Raiq Al-Nima, Mahmood Al-jiboori

Subject: Physical Sciences, Applied Physics Keywords: Casts; Aluminum; Copper; Mechanical Tests

Online: 4 October 2021 (10:28:57 CEST)

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Preprint REVIEW | doi:10.20944/preprints202304.0859.v1

Nutritional Aspects of Iron in Health and Disease

Edouard Charlebois, Kostas Pantopoulos

Subject: Medicine And Pharmacology, Other Keywords: Iron deficiency; iron overload; anemia; heme; metabolic syndrome; cardiovascular disease; cancer; microbiome

Online: 24 April 2023 (12:48:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1338.v1

Iron Chelation in Patients with Myelodysplastic Syndromes and Myeloproliferative Neoplasms—Real-World Data from the German Non- Interventional Study EXCALIBUR

Felicitas Schulz, Ulrich Hauch, Sandra Ketzler-Henkel, Eyck Von der Heyde, Michael Koenigsmann, Michael Lauseker, Nora Schulte, Ulrich Germing

Subject: Medicine And Pharmacology, Hematology Keywords: iron chelation; iron overload; myelodysplastic syndromes; MDS; myeloproliferative neoplasms; MPN; ferritin; hematologic improvement

Online: 20 September 2023 (05:39:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202312.0047.v1

Nanostructured Copper Selenide Coatings for Antifouling Applications

Sergio Mancillas-Salas, José Ángel Ledón-Smith, Marissa Pérez-Álvarez, Gregorio Cadenas-Pliego, José Manuel Mata-Padilla, Marlene Andrade-Guel, Sandra Cecilia Esparza-González, Gregorio Vargas-Gutiérrez, Uriel Alejandro Sierra-Gómez, Esmeralda Monserrat Saucedo-Salazar

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: antimicrobial activity; nanoparticles synthesis; copper selenide

Online: 1 December 2023 (05:42:27 CET)

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Preprint ARTICLE | doi:10.20944/preprints202306.2092.v1

Environmental And Technological Assessment Of Operations For Extraction And Concentration Of Metals In Electronic Waste

Josinaldo Dias, Angelus Giuseppe Pereira Silva, José Nilson França Holanda, Fabíola Martins Delatorre, Amanda Oliveira Conceição, Gilson Mendonça de Miranda Júnior, Aurora Magalhães Futuro, Silvia Cardinal Pinho

Subject: Environmental And Earth Sciences, Waste Management And Disposal Keywords: Electronic waste; Waste management; Copper recovery

Online: 29 June 2023 (10:13:34 CEST)

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The exponential growth in the consumption of electronics, in combination with the reduction in their useful life, leads to a significant increase in the volume of electronic material discarded. Printed Circuit Boards (PCBs) are modules composed of ceramic, polymer and metallic materials of high economic value and with a great potential for damage to biotic and anthropic environments when inadequately discarded. The aims of this work was to study the main environmental impacts and the efficiency of mechanical operations in the electronic waste recycling process in optimizing the concentration of metallic copper. For this, the samples obtained were characterized according to their morphology and chemical composition, and subjected to physical and mechanical treatments: dismantling, grinding, separation by granulometry, density and magnetic property. The environment impacts were estimated by the Life Cycle Assessment of the pre-treatment processes, associated with copper extraction operations in WPCBs. According to the results obtained, it is possible to infer that the NM +1mm Concentrated product presents in its metallic composition around 78% of copper, which contributes to the efficiency of the hydrometallurgical extraction processes. It is noteworthy that the Concentrated class represents about 14% of copper (wt) taking into account the amount of 3.789 kg of PCB waste input material. The potential for reinsertion of the dust in the material recovery process is highlighted, given that the chemical composition of this particulate has a significant presence of metals. In general, it was found that due to the higher concentration (wt %) of the sample being allocated in the range of - 0.15mm + 0.05mm, the elements Fe (18.30%), Si (10.73%), Ca (9.21%) and Cu (8.89%) stand out regarding the participation of the elemental composition of this fraction and also regarding the general composition of the sample. Furthermore, the generation of dust during the fragmentation process, can be associated with occupational respiratory diseases when not managed. About the Life Cycle Assessment, in seven of the nine categories evaluated, crushing and screening activities accounted for more than 90% of the recorded impact values. In general, it is estimated that in the pre-treatment phase be generated 15.4 kg CO2 eq.

Preprint ARTICLE | doi:10.20944/preprints202304.1135.v1

Schiff Bases Functionalized With T-Butyl Groups As Adequate Ligands to Extended Assembly of Cu(II) Helicates

Sandra Fernández-Fariña, Isabel Velo-Heleno, Miguel Martínez-Calvo, Marcelino Maneiro, Francisco Rivadulla, Rosa Pedrido, Ana M. González-Noya

Subject: Chemistry And Materials Science, Inorganic And Nuclear Chemistry Keywords: Schiff bases; copper; helicates; magnetic properties

Online: 28 April 2023 (07:24:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202303.0529.v1

Synergetic Photocatalytic Peroxymonosulfate Oxidation of Benzotriazole by Cupper Ferrite Spinel: Factors and Mechanism Analysis

Masoumeh Golshan, Rasool Pelalak, Babak Kakavandi

Subject: Chemistry And Materials Science, Chemical Engineering Keywords: Peroxymonosulfate activation; Copper ferrite; Photocatalyst; Benzotriazole

Online: 30 March 2023 (12:37:40 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0064.v2

Metallothionein Expression as Physiological Response Against Metal Toxicity in the Striped Rockcod Trematomus hansoni

Rigers Bakiu, Sara Pacchini, Elisabetta Piva, Sophia Schumann, Anna Maria Tolomeo, Diana Ferro, Paola Irato, Gianfranco Santovito

Subject: Biology And Life Sciences, Anatomy And Physiology Keywords: Antarctica; antioxidants; cadmium; copper; fish; metallothioneins

Online: 6 October 2022 (09:57:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202204.0133.v1

Effect of Sulfur Content on Copper Recovery in the Reduction Smelting Process

Long Wu, Hongyang Wang, Kai Dong

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: Copper recovery; Thermodynamic equilibrium; Reduction experiment

Online: 14 April 2022 (12:12:46 CEST)

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Preprint REVIEW | doi:10.20944/preprints202010.0353.v1

The Multifaceted Roles of Copper in Cancer: a Trace Metal Element with Dysregulated Metabolism, but also a Target or a Bullet for Therapy

Pierre Lelièvre, Lucie Sancey, Jean-Luc Coll, Aurélien Deniaud, Benoît Busser

Subject: Medicine And Pharmacology, Oncology And Oncogenics Keywords: Copper homeostasis; Cancer; Prognostic; Diagnostic; Therapy

Online: 16 October 2020 (14:32:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202008.0139.v1

Copper Price Prediction Using Support Vector Regression Technique

Gabriel Astudillo, Raúl Carrasco, Christian Fernández-Campusano, Máx Chacón

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: copper price; prediction; support vector regression

Online: 6 August 2020 (08:26:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202003.0253.v1

Tuning of Localized Surface Plasmon Resonance in Copper-Copper Oxide Core-Shell Quantum Dots for the Application in Biosensors

Prabhash Prasannan Geetha, Ajith Ramachandran, Swapna S. Nair

Subject: Chemistry And Materials Science, Nanotechnology Keywords: copper; surface plasmon resonance; bio-sensor

Online: 16 March 2020 (01:16:25 CET)

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Preprint ARTICLE | doi:10.20944/preprints202001.0057.v1

Recovery of Copper from Leached-Tailing Solutions by Biosorption

Sonia Cortés, Elizabeth E. Soto, Javier I. Ordóñez

Subject: Environmental And Earth Sciences, Environmental Science Keywords: biosorption; copper; algae; tailings; mine waste

Online: 8 January 2020 (03:06:34 CET)

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Preprint ARTICLE | doi:10.20944/preprints201909.0185.v1

Removal of Copper Ions in Wastewater by Adsorption onto a Green Adsorbent from Winemaking Wastes

Lorena Alcaraz, Irene García-Díaz, Francisco J. Alguacil, Félix A. López

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: activated carbon; adsorption; copper; winemaking wastes

Online: 17 September 2019 (11:44:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201808.0310.v1

New Data on Copper and Silver Ore-Occurrence Sigurd in West-Spitsbergen Island, Svalbard archipelago

Alexandr Evdokimov, Alexandr Sirotkin, Gusel Korobova

Subject: Environmental And Earth Sciences, Geochemistry And Petrology Keywords: Svalbard, Sigurd, copper, silver, gold, geochemistry

Online: 17 August 2018 (13:05:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1306.v1

A Study on Burden of Iron Deficiency Anemia in Anemic Overweight and Obese Patients

AMIT KUMAR, SANDEEP GARG, BIDHAN CHANDRA KONER

Subject: Endocrinology And Metabolism, Medicine And Pharmacology Keywords: Anemia; Iron Deficiency; Obese Patients

Online: 22 April 2024 (12:12:13 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202309.1053.v1

Development and Characterization of Human Oligodendroglioma Cellular Model as a Useful Tool to Study Iron Role in Tumor Cell: Preliminary Results and Future Prospective

Stefania Braidotti, Debora Curci, Daniele Zampieri, Cesare Covino, Davide Zanon, Natalia Maximova, Roberto Sala

Subject: Medicine And Pharmacology, Oncology And Oncogenics Keywords: Oligodendroglioma; iron; pediatric; brain tumors

Online: 15 September 2023 (09:40:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1739.v1

Spatiotemporal Variability in Soil Properties and Composition in Mangrove Forests in Baía de Todos os Santos (NE Brazil)

Mônica Arlinda Vasconcelos Ramos, Augusto Pérez-Alberti, Gabriel Nuto Nóbrega, Xosé Luis Otero

Subject: Environmental And Earth Sciences, Soil Science Keywords: Soil geochemistry pyrites; iron partitioning

Online: 25 May 2023 (05:24:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201904.0054.v1

Cytokine Dependent Hematopoietic Cell Linker (CLNK) is Highly Elevated in Blood Transfusion Dependent Beta-Thalassemia Major Patients

Hussein Kadhem Al-Hakeim, Hawraa Hussein Al-Mayali, Michael Maes

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: CLNK; thalassemia; ferritin; iron overload

Online: 4 April 2019 (12:35:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0422.v1

Saliva and Serum Ghrelin and Obestatin in Iron Deficiency Anemia Patients

Kader Ugur, Suleyman Aydin, Emir Donder, İbrahim Sahin, Meltem Yardim, Mehmet Kalayci, Nevzat Gozel, Ramazan Ulu, Muhammed Sait Dag, Murat Sarikaya

Subject: Medicine And Pharmacology, Hematology Keywords: iron deficiency anemia; obestatin; ghrelin

Online: 23 July 2018 (12:34:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201905.0129.v1

Determination of Metal Corrosion of Wood Treated with New Generation Water Borne Preservatives Combined with Water Repellents

Ahmet Can, Hüseyin Sivrikaya, Cihat Tascioglu

Subject: Chemistry And Materials Science, Paper, Wood And Textiles Keywords: Alkaline copper quat (ACQ); Boric acid (BA); Micronized copper quat (MCQ); Nano boron (NB); Corrosion test

Online: 10 May 2019 (14:36:07 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201910.0107.v1

Lowering the Carbon Footprint of Steel Production Using Hydrogen Direct Reduction of Iron Ore and Molten Metal Methane Pyrolysis

Abhinav Bhaskar, Mohsen Assadi, Homam Nikpey Somehsaraei

Subject: Engineering, Energy And Fuel Technology Keywords: hydrogen; methane pyrolysis; direct reduced iron; industrial decarbonization; iron and steel; electric arc furnace

Online: 9 October 2019 (11:33:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.1835.v1

The Influence of Rare Earth Ce on the Microstructure and Properties of Cast Pure Copper

Mingyi Zhang, Jichun Yang, Haixiao Li

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Pure copper; Rare earth; Organization; Performance; Thermodynamics

Online: 29 March 2024 (10:40:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints202307.0734.v1

Antibacterial Activity of Biosynthesized Copper Oxide Nanoparticles (CuONPs) Using Ganoderma sessile

Karla M. Flores-Rábago, Daniel Rivera-Mendoza, Alfredo R. Vilchis-Nestor, Karla Juarez-Moreno, Ernestina Castro-Longoria

Subject: Chemistry And Materials Science, Nanotechnology Keywords: green method; copper oxide nanoparticles; antibacterial; ultrastructure

Online: 11 July 2023 (12:37:34 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202306.2148.v1

The Homoleptic Curcumin-Copper Single Crystal (ML2): A Long Awaited Cherry on the Cake in the Field of Curcumin Metal Complexes

Antonino Arenaza Corona, Marco A. Obregón Mendoza, William Meza Morales, María Teresa Ramírez Apan, Antonio Nieto Camacho, Rubén A. Toscano, Leidys L. Pérez González, Rubén Sánchez Obregón, Raúl G. Enríquez

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: Curcumin-Copper (II); single crystal; cytotoxicity; antioxidant

Online: 29 June 2023 (13:26:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1840.v1

Optimization of Experimental Protocol in Order to Form SEBS Film via Dip-Coating the Copper Surface Using Response Surface Methodology

Fatma MASMOUDI, Abdulrahman MALLAH, Mohamed MASMOUDI

Subject: Chemistry And Materials Science, Electrochemistry Keywords: Coating; Copper; SEBS; Corrosion; Box-Behnken Design

Online: 26 May 2023 (05:12:22 CEST)

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Preprint CASE REPORT | doi:10.20944/preprints202205.0111.v1

Perforation of the Cervix by the Strings of An Intrauterine Device (IUD): А Novel Case Report and Systematic Review of the Literature

Panagiotis Peitsidis, Chryssa Ekizoglou, Demetrios Spiliopoulos, Stefanos Zervoudis, Panagiotis Tsikouras

Subject: Medicine And Pharmacology, Obstetrics And Gynaecology Keywords: Intrauterine device; cervical perforation; hysteroscopy; copper; strings

Online: 9 May 2022 (10:00:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202204.0269.v1

Biochemical and Metabolomic Responses of Antarctic Bacterium Planococcus sp. O5 Induced by Copper Ion

Ziyi Cheng, Cuijuan Shi, Xiujun Gao, Xiaofei Wang, Guangfeng Kan

Subject: Biology And Life Sciences, Ecology, Evolution, Behavior And Systematics Keywords: Antarctic strain; copper stress; adaption responses; metabolomics

Online: 28 April 2022 (03:59:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202201.0356.v1

Bimetallic Copper-Silver Systems Supported on Natural Clinoptilolite: Long-Term Changes in Nanospecies Composition and Stability

Inocente Rodríguez-Iznaga, Vitalii Petranovskii, Fernando Chávez-Rivas, Marina G. Shelyapina

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Clinoptilolite zeolite; Nanospecies; Bimetallic system; Copper; Silver

Online: 24 January 2022 (12:58:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints202005.0131.v1

Influence of Copper and Biopolymer/Saqez Resin on the Properties of Poplar Wood

Huijun Dong, Mohsen Bahmani, Sohrab Rahimi, Miha Humar

Subject: Chemistry And Materials Science, Biomaterials Keywords: Saqez; Copper; Physical properties; Biological resistance; Performance

Online: 7 May 2020 (15:08:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201909.0252.v1

Effect of Serum Copper on Circulating Angiogenesis-Related Factors in Women with Preeclampsia

Khalid Najm Nadheer, Zohreh Zahraei, Hussein Al-Hakeim

Subject: Medicine And Pharmacology, Obstetrics And Gynaecology Keywords: copper; endoglin; preeclampsia; VEGF-A; sVEGF-R1

Online: 21 September 2019 (09:51:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0344.v1

Brazing of Mo to Glidcop Dispersion Strengthened Copper for Accelerating Structures

Valentina Casalegno, Sergio Perero, Monica Ferraris, Mauro Taborelli, Gonzalo Arnau Izquierdo, Stefano Sgobba, Milena Salvo

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: brazing; alumina dispersion-strengthened copper; mechanical test

Online: 19 July 2018 (05:18:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201803.0023.v1

The Validation Process of the Method of Balancing Gas Contained in the Pore Space of Rocks via Rock Comminution

Mateusz Kudasik, Anna Pajdak, Norbert Skoczylas

Subject: Environmental And Earth Sciences, Geophysics And Geology Keywords: porosity; gas; outburst; dolomite, copper ore mines

Online: 2 March 2018 (12:47:16 CET)

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The article discusses the validation process of a certain method of balancing gas contained in the pore space of rocks. The validation was based upon juxtaposition of the examination of rocks' porosity and the effects of comminution in terms of assessing the possibility of opening the pore space. The tests were carried out for six dolomite samples taken from different areas of the 'Polkowice-Sieroszowice’ copper mine in Poland. Before the rock material was ground, it was examined using the porosimetric method and subsequently subjected to the SEM analysis. After grinding, the research material was subjected to the granulometric analysis. Prior to the grinding process, the rocks' porosity fell in the range of 0.3-14.8%, while the volume of the open pores was included in the 0.01-0.06 cm3/g range. The research material was also characterized by inhomogeneous distribution of the pore volume. The grinding process was performed using an original device – the GPR analyzer. The ground samples were characterized by similar particle size distribution and mean diameters D_3.2 of about 4.0-4.5 µm. The SEM analysis revealed pores of various size and shape on the surface of the rock cores, while at the same time demonstrating lack of pores following the grinding process. The grain size distribution curves were compared with the cumulative pore volume curves of the cores before grinding. The resulting intersection points of both curves were seen as testifying to the presence of openings in the rock pores and release of the accumulated gas. The opening percentage of the pore space was associated with the coordinates of the curves' intersections. In order to confirm the argument put forward in this paper – i.e. that comminution of a rock to grains of a size comparable with the size of the rock's pores results in the release of gas contained in the pore space – the amount of gas released as a result of the comminution process was studied. The results of gas balancing demonstrated that the pore space of the investigated dolomites was filled with gas in amounts from 3.19 cm3/kg to 45.86 cm3/kg. The obtained results of the rock material comminution to grains comparable – in terms of size – to the size of the pores of investigated rocks, along with asserting the presence of gas in the pore space of the studied dolomites, were regarded as a proof that the method of balancing gas in rocks via rock comminution is correct.

Preprint ARTICLE | doi:10.20944/preprints201801.0228.v2

Low-Waste Recycling of CuO-ZnO-Al2O3 Spent Catalysts

Stanisław Małecki, Krzysztof Gargul

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: sustainable development, recycling, spent catalysts, zinc, copper

Online: 22 February 2018 (15:46:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints202404.1104.v1

Effect of Carbon on Void Nucleation in Iron

Lin Shao

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: void; swelling; nucleation; iron; carbon; defect

Online: 18 April 2024 (02:43:00 CEST)

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Preprint CASE REPORT | doi:10.20944/preprints202404.0825.v1

Iron Supplementation in the Treatment of Cocaine Use Disorder

Sarah Hughes, Olivia Hill, Raja Mogallapu

Subject: Medicine And Pharmacology, Psychiatry And Mental Health Keywords: Iron Deficiency; Cocaine; Substance Use Disorder

Online: 12 April 2024 (13:33:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202311.0528.v1

Thermosensitive Chitosan Hydrogels as a Vehicle for Iron Dextran as a Potential Strategy for Parenteral Nutrient Supplementation

Emerson Durán, Andrónico Neira-Carrillo, Felipe Oyarzun-Ampuero, Carolina Valenzuela

Subject: Biology And Life Sciences, Food Science And Technology Keywords: Chitosan; thermosensitive hydrogel; iron deficiency; pig

Online: 8 November 2023 (16:12:08 CET)

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Preprint ARTICLE | doi:10.20944/preprints202305.2069.v1

Antioxidants Prevent Iron Accumulation and Lipid Peroxidation, but do not Correct Autophagy Dysfunction or Mitochondrial Bioenergetics in Cellular Models of BPAN

Alejandra Suárez-Carrillo, Mónica Álvarez-Córdoba, Ana Romero-González, Marta Talaverón-Rey, Suleva Povea-Cabello, Paula Cilleros-Holgado, Rocío Piñero-Pérez, Diana Reche-López, David Gómez-Fernández, José M. Romero-Domínguez, Manuel Munuera-Cabeza, Antonio Díaz, Susana Gonzalez-Granero, José M. García-Verdugo, And José A. Sánchez-Alcázar

Subject: Biology And Life Sciences, Neuroscience And Neurology Keywords: BPAN; WDR45; antioxidants; autophagy; iron accumulation

Online: 31 May 2023 (03:32:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202105.0283.v1

Genetic Gain for Grain Micronutrients and their Association with Phenology in Historical Wheat Cultivars of Pakistan Released between 1909 and 2018 in Pakistan

Muzaffar Shoukat, Mengjing Sun, Mohsin Ali, Tariq Mahmood, Samar Naseer, Saman Maqbool, Shoaib Rehman, Zahid Mahmood, Xianchun Xia, Yuanfeng Hao, Awais Rasheed, Zhonghu He

Subject: Biology And Life Sciences, Anatomy And Physiology Keywords: Wheat; Biofortification; Iron; Zinc; Rht genes

Online: 13 May 2021 (11:20:29 CEST)

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Wheat (Triticum aestivum L.) being a staple food crop is an important nutritional source providing protein and minerals. It is important to fortify staple cereals like wheat with essential minerals to overcome the problems associated with malnutrition. The experiment was designed to evaluate the status of 11 micronutrients including grain iron (GFe) and zinc (GZn) in 62 wheat cultivars released between 1911 and 2016 in Pakistan. Field trials were conducted over two years and GFe and GZn were quantified by both inductively coupled plasma optical emission spectroscopy (ICP-OES) and energy dispersive X-ray fluorescence spectrophotometer (EDXRF). The GZn ranged from 18.4 to 40.8 mg/kg by ED-XRF and 23.7 to 38.8 mg/kg by ICP-OES. Similarly, GFe ranged from 24.8 to 44.1 mg/kg by ICP-OES and 26.8 to 36.6 mg/kg by EDEXR. The coefficient of correlation was higher for GZn (r=0.90), compared to GFe (r=0.68). Modern cultivars like Zincol-16 and AAS-2011 showed higher GFe and GZn along with improved yield components. Old wheat cultivars WL-711, C-518 and Pothowar-70 released before 1970 also exhibited higher value of GFe and GZn, however their agronomic performance was poor. Multivariate analysis using ten micronutrients (Al, Ca, Cu, K, Mg, Mn, Na and P) along with agronomic traits, and genome-wide SNP markers identified the potential cultivar with improved yield, biofortification trait and wider genetic diversity. Genetic gain analysis identified significant increase in grain yield (0.4% year-1), while there was negative gain for GFe (-0.11% year-1) and GZn (-0.15% year-1) over the span of 100 years. The Green Revolution Rht-B1 and Rht-D1 genes had strong association with plant height, and grain yield (GY), while semi-dwarfing alleles had negative effect on GFe and GZn contents. This study provided a valuable insight into biofortification status of wheat cultivars deployed historically in Pakistan and is a valuable source to initiate a breeding strategy for simultaneous improvement in wheat phenology and biofortification.

Preprint REVIEW | doi:10.20944/preprints202010.0447.v1

Iron Dysregulation in Human Cancer: Altered Metabolism, Biomarkers for Diagnosis, Prognosis, Monitoring and Rationale for Therapy

Pierre Lelièvre, Lucie Sancey, Jean-Luc Coll, Aurélien Deniaud, Benoît Busser

Subject: Medicine And Pharmacology, Oncology And Oncogenics Keywords: Iron homeostasis; Cancer; Prognostic; Diagnostic; Therapy

Online: 22 October 2020 (08:56:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201909.0147.v1

Osmotic Fragility in Essential Hypertension Revisited: A Correlation with Iron Status and Lipid Profile

Hussein Kadhem Al-Hakeim, Zainab Hussein Alhillawi, Shatha Rouf Moustafa Al-Ani

Subject: Medicine And Pharmacology, Pathology And Pathobiology Keywords: iron; TIBC; ferritin; osmotic fragility; hypertension

Online: 15 September 2019 (03:10:09 CEST)

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Preprint REVIEW | doi:10.20944/preprints202402.0938.v1

Biomarkers of Brain Dysfunction in Perinatal Iron Deficiency

Raghavendra B Rao

Subject: Medicine And Pharmacology, Clinical Medicine Keywords: biomarker; brain; ferritin; hemoglobin; iron; iron deficiency; neurodevelopment; perinatal; reticulocyte hemoglobin; zinc protoporphyrin-to-heme ratio

Online: 19 February 2024 (10:28:17 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0339.v1

A Crucial Role of Proteolysis in Formation of Intracellular Dinitrosyl Iron Complexes

Karolina E. Wójciuk, Jarosław Sadło, Hanna Lewandowska, Marcin Kruszewski

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: K562 cells; electron paramagnetic resonance; nitric oxide; reactive nitrogen species; dinitrosyl iron complexes; chelatable iron; glutathione

Online: 6 February 2024 (13:33:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints202007.0564.v1

Replication Experiments and Microstructure Evolution of the Ancient Co-fusion Steelmaking Process

Qiao Shangxiao, Wei Qian

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: history of metallurgy; co-fusion steelmaking; ancient China; microstructure evolution; simulation experiments; cast iron; wrought iron

Online: 23 July 2020 (12:49:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0338.v1

DSC Analysis of the Effect of Cold Deformation on the Precipitation Kinetics of a Binary Cu-SC Alloy

Ramona Lucy Henle, Julia Dölling, Ulrich Prahl, Gerrit Nandi, Andreas Zilly

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: copper-scandium CuSc; copper alloy; differential scanning calorimetry DSC; precipitation kinetics; cold-working; cold-rolling; activation energy; Kissinger method

Online: 14 April 2023 (03:19:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202102.0603.v1

Highly Graphitized Fe-N-C Electrocatalysts Prepared from Chitosan Hydrogel Frameworks

Giorgia Daniel, Tomasz Kosmala, Federico Brombin, Marco Mazzucato, Alessandro Facchin, Maria Chiara Dalconi, Denis Badocco, Paolo Pastore, Gaetano Granozzi, Christian Durante

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: ORR; PGM-free; iron; chitosan; biomass, acid electrolyte; iron-nitrogen-doped carbon; graphitization, site density, Fe-Nx

Online: 26 February 2021 (09:43:44 CET)

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The development of platinum group metal-free (PGM-free) electrocatalysts derived from cheap and environmentally friendly biomasses for oxygen reduction reaction (ORR) is a topic of relevant interest, particularly from the point of view of sustainability. Fe-nitrogen-doped carbon materials (Fe-N-C) have attracted particular interest as alternative to Pt-based materials, due to the high activity and selectivity of Fe-Nx active sites, the high availability and good tolerance to poisoning. Recently, many studies focused on developing synthetic strategies, which could transform N-containing biomasses into N-doped carbons. In this paper chitosan was employed as a suitable N-containing biomass for preparing Fe-N-C catalyst in virtue of its high N content (7.1%) and unique chemical structure. Moreover, the major application of chitosan is based on its ability to strongly coordinate metal ions, a precondition for the formation of Fe-Nx active sites. The synthesis of Fe-N-C consists in a double step thermochemical conversion of a dried chitosan hydrogel. In acidic aqueous solution, the preparation of physical cross-linked hydrogel allows to obtain sophisticated organization, which assure an optimal mesoporosity before and after the pyrolysis. After the second thermal treatment at 900 °C, a highly graphitized material was obtained, which has been fully characterized in term of textural, morphological and chemical properties. RRDE technique was used for understanding the activity and the selectivity of the material versus the ORR in 0.5 M H2SO4 electrolyte. Special attention was put in the determination of the active site density according to nitrite electrochemical reduction measurements. It was clearly established that the catalytic activity expressed as half wave potential linearly scales with the number of Fe-Nx sites. It was also established that the addition of the iron precursor after the first pyrolysis step leads to an increased activity because of both an increased number of active sites and of a hierarchical structure, which improves the access to active sites. At the same time, the increased graphitization degree, and a reduced density of pyrrolic nitrogen groups are helpful to increase the selectivity toward the 4e- ORR pathway.

Preprint ARTICLE | doi:10.20944/preprints202404.1135.v1

Microstructure and Texture Evolution in Cold‐Rolled and Annealed Oxygen‐Free Copper Sheets

Jing Qin, Xun Li, Dongsheng Wang, Chen Zhou, Tongsheng Hu, JingWen Wang, Youwen Yang, Yujun Hu

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: microstructure; texture; copper sheet; rolling reduction; annealing twin

Online: 17 April 2024 (11:57:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202402.0033.v1

Simultaneous Detection of Dopamine and Uric Acid at a Glassy Carbon Electrode Modified with a Novel Polymerized Copper Phthalocyanine-Multi-Wall Carbon Nanotubes Complex

Lassaad Barhoumi, Olfa Karker, Salem Nasraoui, Mounir Ben Ali, Olfa Kanoun

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: Simultaneous detection; Dopamine; Uric Acid; copper phthalocyanine; MWCNT

Online: 1 February 2024 (10:51:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.2004.v1

Copper-Free Sonogashira Cross-Coupling of Aryl Chlorides with (Hetero)arylacetylenes in the Presence of Ppm Molar Loadings of [{Pd(OH)Cl(NHC)}₂] Complexes. Hydrogen Chloride as a Coupling Product. Co-catalytic Effect of Water

Sylwia Ostrowska, Szymon Rogalski, Cezary Pietraszuk

Subject: Chemistry And Materials Science, Other Keywords: copper-free Sonogashira; cross-coupling; palladium; NHC complexes

Online: 31 October 2023 (06:08:04 CET)

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Preprint ARTICLE | doi:10.20944/preprints202307.2016.v1

Mineralogical Characterization of Historic Copper Slag to Guide the Recovery of Valuable Metals: A Namibian Case Study

Godfrey Dzinomwa, Benjamin Mapani, Titus Nghipulile, Kasonde Maweja, Jacqueline Tatenda Kurasha, Martha Amwaama, Kayini Chigayo

Subject: Engineering, Metallurgy And Metallurgical Engineering Keywords: copper slag; mineralogy; slag re-processing; pyrometallurgy; hydrometallurgy

Online: 31 July 2023 (05:14:47 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.1222.v1

Heterogeneous Copper Catalysts in the Aqueous Phase Hydrogenation of Maltose to Sorbitol

Valeria Pappalardo, Federica Zaccheria, Nicola Scotti, Nicoletta Ravasio

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: copper catalysts; disaccharides; maltose; sorbitol; Cu on silica

Online: 16 June 2023 (10:38:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1606.v1

Effect of Controlled Heat Treatment and Aluminum Additions on the Strengthening of Cu-Ni Based Alloys for Dental Applications

Isai Rosales-Cadena, Jose Gonzalo Gonzalez-Rodriguez, Constancio Diaz-Reyes, Rene Guardian-Tapia, Juan Antonio Ruiz-Ochoa, America Maria Ramirez-Arteaga, Roy Lopez-Sesenes

Subject: Engineering, Bioengineering Keywords: Copper Nickel alloys; Hardness; Mechanical Properties; Heat Treatment

Online: 23 May 2023 (07:52:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1426.v1

Optical Properties of RF-Magnetron-Sputtered Polycrystalline Cu₃N Thin Films Determined by UV/visible/NIR Spectroscopic Ellipsometry: Eco-Friendly Light Absorber

Emilio Márquez, Eduardo Blanco, Marcos García-Gurrea, Manuel Cintado Puerta, Manuel Domínguez de la Vega, Manuel Ballester, José M. Mánuel, Maribel A. Rodríguez-Tapiador, Susana M. Fernández

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: copper-nitride semiconductor; RF-magnetron sputtering; spectroscopic ellipsometry

Online: 19 May 2023 (10:11:11 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202305.0275.v1

Chelator PBT2 Forms a Ternary Cu²⁺ Complex with β-Amyloid that has High Stability but Low Specificity

Simon Drew

Subject: Biology And Life Sciences, Biophysics Keywords: 8-hydroxyquinoline; PBT2; amyloid; copper; terdentate; ternary; antimicrobial

Online: 5 May 2023 (02:36:19 CEST)

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The metal chelator PBT2 (5,7-dichloro-2-[(dimethylamino)methyl]-8-hydroxyquinoline) acts as a terdentate ligand capable of forming binary and ternary Cu2+ complexes. It was clinically trialed as an Alzheimer’s disease (AD) therapeutic but failed to progress beyond phase II. The β-amyloid (Aβ) peptide associated with AD was recently concluded to form a unique Cu(Aβ) complex that is inaccessible to PBT2. Herein, it is shown that the species ascribed to this binary Cu(Aβ) complex in fact corresponds to ternary Cu(PBT2)NIm[Aβ] complexes formed by anchoring of Cu(PBT2) on imine nitrogen (NIm) donors of His side chains. The primary site of ternary complex formation is His6, having a conditional stepwise formation constant at pH 7.4 (K [M−1] ) of log K = 6.4 ± 0.1, and a second site is supplied by His13 or His14 (log K = 4.4 ± 0.1). The stability of Cu(PBT2)NIm[H13/14] is comparable with that of the simplest ternary complexes involving free imidazole (log K = 4.22 ± 0.09) and histamine (log K = 4.00 ± 0.05). The 100-fold larger formation constant for Cu(PBT2)NIm[H6] indicates that outer-sphere ligand–peptide interactions strongly stabilize its structure. Despite the relatively high stability of Cu(PBT2)NImH6, PBT2 is a promiscuous Cu2+-binding ligand capable of forming a ternary Cu(PBT2)NIm complex with any ligand containing NIm donor. These ligands include histamine, L-His, and ubiquitous His side chains of peptides and proteins in the extracellular milieu, whose combined effect should outweigh that of a single Cu(PBT2)NIm[H6] complex regardless of its stability. We therefore conclude that PBT2 is capable of accessing Cu(Aβ) complexes with high stability but not specificity. The results have implications for future AD therapeutic strategies and understanding the role of PBT2 in the bulk transport of transition metal ions. Given the repurposing of PBT2 as a drug for breaking antibiotic resistance, ternary Cu(PBT2)NIm and analogous Zn(PBT2)NIm complexes may be relevant to its antimicrobial properties.

Preprint ARTICLE | doi:10.20944/preprints202303.0204.v1

Copper-Contaminated Substrate Biosorption by Penicillium sp. Isolated From Kefir Grains

Antonio Ferreira de Oliveira, Raquellyne Baia Machado, Adriana Maciel Ferreira, Iracirema da Silva Sena, Maria Eduarda Silveira, Ana Maria Santos de Almeida, Francinaldo S. Braga, Alex Bruno Lobato Rodrigues, Roberto Messias Bezerra, Irlon Maciel Ferreira, Alexandro Cezar Florentino

Subject: Biology And Life Sciences, Immunology And Microbiology Keywords: Bioremediation; copper nitrate; Penicillium sp.; kefir; inorganic contaminant.

Online: 13 March 2023 (02:18:00 CET)

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Preprint ARTICLE | doi:10.20944/preprints202301.0119.v1

First-principles Calculation of In and Ag, Cu Replacing Zn in Sphalerite

Fan Xiao, Weipeng Lin

Subject: Engineering, Mining And Mineral Processing Keywords: sphalerite; first principle; indium enrichment mechanism; copper; silver

Online: 6 January 2023 (06:54:27 CET)

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Preprint ARTICLE | doi:10.20944/preprints202206.0001.v2

Effect of Sintering Temperature on the Properties of CuAlO₂ Synthesized from Nanosized Precursors for Application in Smart Infrastructure Systems

Shabnam Ghotbi, Mohammad Abbas Mousa, Lateef N Assi, SeyedAli Ghahari

Subject: Engineering, Mechanical Engineering Keywords: copper aluminum oxide; sintering; electrical conductivity; activation energy

Online: 21 July 2022 (02:53:40 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202112.0020.v1

New Insights Into Recovery of Copper and Gold from Old Flotation Tailings from Bor, Serbia

Erdem Özdemir, Aleksandra Lang, Juha Saari, Jussi Liipo

Subject: Engineering, Chemical Engineering Keywords: copper; gold; mineralogy; tailings; flotation; value recovery; modelling

Online: 1 December 2021 (16:27:57 CET)

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Working Paper ARTICLE

Crystal Plasticity with Micromorphic Regularization in Assessing Scale Dependent Deformation of Polycrystalline Doped Copper Alloys

Matti Lindroos, Tom Andersson, Jarkko Metsajoki, Anssi Laukkanen

Subject: Chemistry And Materials Science, Biomaterials Keywords: micromechanics; crystal plasticity; micromorphic; Hall-Petch; copper alloys

Online: 12 July 2021 (11:16:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202104.0727.v1

On novel Copper Based Alloys Development via Friction Stir Alloying

Khaja Moiduddin, Arshad Noor Siddiquee, Mustufa Haider Abidi, Syed Hammad Mian, Muneer Khan Mohammed

Subject: Chemistry And Materials Science, Biomaterials Keywords: Copper alloy; friction stir alloying; macrostructure; material properties

Online: 27 April 2021 (14:25:31 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202008.0701.v1

Effect of Cu and Cs in the b-Mo2C System for CO2 Hydrogenation to Methanol

Ana Belén Dongil, Qi zhang, Laura Pastor-Pérez, Tomás Ramírez-Reina, Antonio Guerrero-Ruiz, Inmaculada Rodríguez-Ramos

Subject: Chemistry And Materials Science, Chemical Engineering Keywords: carbon dioxide; molybdenum carbide; methanol; copper; alkali; dopant

Online: 31 August 2020 (05:03:06 CEST)

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Preprint REVIEW | doi:10.20944/preprints201809.0161.v1

Copper Metabolism of Newborns Is Adapted to Milk Ceruloplasmin As a Nutritive Source of Copper

Ludmila V. Puchkova, Polina S. Babich, Yulia A. Zatulovskaia, Ekaterina Y. Ilyechova, Francesca Di Sole

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: embryonic type copper metabolism; milk ceruloplasmin; baby formula

Online: 10 September 2018 (09:43:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201806.0215.v1

Inhibition Effect of 3D Nanostructures on the Corrosion Resistance of 1-Dodecanethiol Self-Assembled Monolayers on Copper in Nacl Solution

Shuai Hu, Zhenyu Chen, Xingpeng Guo

Subject: Chemistry And Materials Science, Electrochemistry Keywords: Copper; Phosphoric acid; 3D Nanostructures; 1-dodecanethiol SAMs

Online: 13 June 2018 (15:33:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201803.0198.v1

Rhodamine Derivative Functionalized Magnetic Nano-Platform for Cu²⁺ Sensing and Removal

Jiaxin Wang, Shuhan Wang, Wanqing Tian, Dong Yao, Lining Sun, Liyi Shi, Jinliang Liu

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: copper detection; magnetic nanoparticle; rhodamine B derivative; removal

Online: 23 March 2018 (10:28:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints201803.0091.v1

A Breakthrough in Water Purification Using an Oligodynamic Metal and Moringa Oleifera Seed

Alakaparampil Joseph Varkey

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: water purification, oligodynamic metal, moringa oleifera seed, copper

Online: 12 March 2018 (15:20:37 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0927.v1

Study of the Resistance of Ni-Cu Alloyed Austempered Ductile Iron to Multifactorial Wear

Andrzej Norbert Wieczorek

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: mining; wear; scraper conveyors; austempered ductile iron

Online: 19 February 2024 (14:12:19 CET)

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