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Preprint ARTICLE | doi:10.20944/preprints201904.0079.v1

Thermodynamic Efficiency of Water Vapor / Solid Chemical Sorption Heat Storage for Buildings: Theoretical Limits and Integration Considerations

Frédéric Kuznik

Subject: Engineering, Energy & Fuel Technology Keywords: chemical sorption; heat storage; system efficiency; reaction enthalpy; theoretical limits

Online: 8 April 2019 (10:09:39 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202202.0351.v1

Finite Rate Reaction Mechanism Adapted for Modeling Pseudo-Equilibrium Pyrolysis of Cellulose

Tomas Mora

Subject: Engineering, Energy & Fuel Technology Keywords: cellulose; pyrolysis; chemical equilibrium; chemical kinetics

Online: 28 February 2022 (09:03:50 CET)

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Preprint REVIEW | doi:10.20944/preprints202201.0196.v1

The Day the Classroom Flipped: Lessons Learned from Interdisciplinary Science Education Online

Marcus J.C. Long, Yimon Aye

Subject: Life Sciences, Other Keywords: education; online; chemical biology; interdisciplinary

Online: 13 January 2022 (18:27:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints202102.0386.v1

The Challenge of Monitoring Impurity Content of CO₂ Streams

Bjørn H. Morland, Gaute Svenningsen, Arne Dugstad

Subject: Chemistry, Analytical Chemistry Keywords: CO2 impurities; monitoring; chemical analysis

Online: 17 February 2021 (12:18:39 CET)

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Working Paper REVIEW

Chemical Bonding and Physical Properties in Quasicrystals and Their Related Approximant Phases: Known Facts and Current Perspectives

Enrique Maciá Barber

Subject: Chemistry, Other Keywords: quasicrystals; chemical bond; thermoelectric materials

Online: 17 May 2019 (14:12:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201705.0217.v1

Cold Wall CVD (CWCVD) in the Synthesis of Few Layered Graphene on Ni

Mohammad Faisal, Sudipta Bhattacharyya, Pika Jha, Anil Agarwal, P. K. Chaudhury, S. S. Islam, M. Husain

Subject: Materials Science, Nanotechnology Keywords: graphene; chemical vapor deposition; nanomaterials

Online: 30 May 2017 (09:50:07 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201811.0627.v1

BIOFACQUIM: A Mexican Compound Database of Natural Products

B. Angélica Pilón-Jiménez, Fernanda I. Saldívar-González, Bárbara I. Díaz-Eufracio, José L. Medina-Franco

Subject: Chemistry, General & Theoretical Chemistry Keywords: chemical space; chemical data set; chemoinformatics; consensus diversity plot; drug discovery; molecular diversity; visualization

Online: 30 November 2018 (10:06:15 CET)

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Preprint REVIEW | doi:10.20944/preprints202105.0334.v1

The not so Identical Twins: (dis)similarities between Reactive Electrophile and Oxidant Sensing and Signaling

Marcus Long, Kuan-Ting Huang, Yimon Aye

Subject: Keywords: RES; ROS; reactive chemical species; electrophile signaling; cysteine; LDE; T-REX; G-REX; Chemical Biology

Online: 14 May 2021 (13:45:08 CEST)

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Preprint REVIEW | doi:10.20944/preprints202206.0156.v1

Methods in Improving the Mechanical Properties and Flux of Nanofibre Membranes for Water Filtration

Siddratul Sarah Binti Mohd Hami, Nor Dalila Nor Affandi, Ahmad Faiza Mohd, Ahmad Mukifza Harun, Mohammad Khursheed Alam, Mohd Rozi Ahmad

Subject: Materials Science, Nanotechnology Keywords: Nanofibres; membranes; water filtration; vapour; chemical

Online: 10 June 2022 (08:19:03 CEST)

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Preprint REVIEW | doi:10.20944/preprints202201.0436.v1

Partial Methane Oxidation in Fuel Cell-Type Reactors for Co-Generation of Energy and Chemicals

Rodrigo F. B. de Souza, Daniel Z. De Florio, Ermete Antolini, Almir O. Neto

Subject: Chemistry, Electrochemistry Keywords: Methane Oxidation; reactor; generation energy; chemical

Online: 28 January 2022 (12:17:15 CET)

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Preprint ARTICLE | doi:10.20944/preprints202012.0815.v1

Recycling of Spent Reverse Osmosis Membranes for the Second Use in Clarification of Wet-Process Phosphoric Acid

Khaoula Khaless, Brahim Achiou, Rachid Boulif, Rachid Benhida

Subject: Chemistry, Analytical Chemistry Keywords: Membrane Chemical Regeneration; Phosphoric Acid; Clarification

Online: 31 December 2020 (13:45:51 CET)

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Working Paper ARTICLE

Development of a Modified Kinetic Method for Modelling of Biogas Produced from Biomass

Bahman Najafi, Sina Faizollahzadeh Ardabili, Shahab Shamshirband, Kwok-wing Chau

Subject: Engineering, Energy & Fuel Technology Keywords: biogas; chemical kinetics; anaerobic digestion; modelling

Online: 1 November 2019 (11:18:40 CET)

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Preprint HYPOTHESIS | doi:10.20944/preprints201904.0210.v2

Hypothesis: Chemical Activity Regulates and Coordinates the Process Maintaining Glycerophospholipid Homeostasis in Mammalian Cells.

Pentti Somerharju, Jorma A. Virtanen, Martin Hermansson

Subject: Life Sciences, Biochemistry Keywords: regulation; membrane; glycerophospholipid; composition; chemical activity

Online: 31 October 2019 (04:39:47 CET)

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Preprint ARTICLE | doi:10.20944/preprints201812.0124.v2

Highly Sensitive Formaldehyde Detection Using Well-Aligned Zinc Oxide Nanosheets Synthesized by Chemical Bath Deposition Technique

Eun-Bi Kim, Hyung Kee Seo

Subject: Materials Science, General Materials Science Keywords: ZnO; nanosheet; formaldehyde; chemical sensor; FET

Online: 17 December 2018 (05:03:15 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0181.v1

Modified Ethylsilicates as Efficient Innovative Consolidants for Sedimentary Rock

Monika Remzova, Luis Antonio Martinez Carrascosa, Maria Jesus Mosquera, Jiri Rathousky

Subject: Materials Science, Surfaces, Coatings & Films Keywords: ethylsilicates; consolidation; nanoparticles; physico-chemical properties

Online: 7 November 2018 (16:12:08 CET)

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Preprint ARTICLE | doi:10.20944/preprints201803.0150.v2

C₆₀ Bioconjugation with Proteins: Towards a Palette of Carriers for All pH Ranges

Matteo Di Giosia, Francesco Valle, Andrea Cantelli, Andrea Bottoni, Francesco Zerbetto, Matteo Calvaresi

Subject: Materials Science, Nanotechnology Keywords: fullerenes; nanohybrids; nanobiotechnology; bioconjugation; chemical stability

Online: 28 April 2018 (11:46:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201801.0126.v1

Surveillance of Groundwater Quality Using Geographical Information System in Kannur District, India

Thangavelu Arumugam, Praveen Krishna, Sapna K

Subject: Life Sciences, Other Keywords: GIS, Groundwater, Physico- chemical parameters, Statistics

Online: 15 January 2018 (16:48:32 CET)

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Preprint ARTICLE | doi:10.20944/preprints202008.0303.v1

The Limits of Classical Extensional Mereology for the Formalization of > Whole-Parts Relations in Quantum Chemical Systems

Marina Paola Banchetti Robino

Subject: Arts & Humanities, Philosophy Keywords: classical extensional mereology; summative mereology; mereology of quantum chemical systems; mereology of chemical wholes; behavioral mereology

Online: 13 August 2020 (11:28:55 CEST)

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This paper examines whether classical extensional mereology is adequate for formalizing the whole-parts relation in quantum chemical systems. Although other philosophers have argued that classical extensional and summative mereology does not adequately formalize whole-parts relation within organic wholes and social wholes, such critiques often assume that summative mereology is appropriate for formalizing the whole-parts relation in inorganic wholes such as atoms and molecules. However, my discussion of atoms and molecules as they are conceptualized in quantum chemistry will establish that standard mereology cannot adequately fulfill this task, since the properties and behavior of such wholes are context-dependent and cannot simply be reduced to the summative properties of their parts. To the extent that philosophers of chemistry have called for the development of an alternative mereology for quantum chemical systems, this paper ends by proposing behavioral mereology as a promising step in that direction. According to behavioral mereology, considerations of what constitutes a part of a whole is dependent upon the observable behavior displayed by these entities. Thus, relationality and context-dependence are stipulated from the outset and this makes behavioral mereology particularly well-suited as a mereology of quantum chemical wholes. The question of which mereology is appropriate for formalizing the whole-parts relation in quantum chemical systems is relevant to contemporary philosophy of chemistry, since this issue is related to the more general question of the reducibility of chemical wholes to their parts and of the reducibility of chemistry to physics, which have been of central importance within the philosophy of chemistry for several decades. More generally, this paper puts contemporary discussions of mereology within the philosophy of chemistry into a broader historical and philosophical context. In doing so, this paper also bridges the gap between formal mereology, conceived as a branch of formal ontology, and ‘applied’ mereology, conceived as a branch of philosophy of science.

Preprint ARTICLE | doi:10.20944/preprints202106.0618.v1

Validation of a Brief Screening Instrument for Chemical Intolerance in a large U.S. National Sample

Raymond F Palmer, Tatjana Walker, David Kattari, Rudy Rincon, Perales Roger, Calos Jaen, Carl Grimes, Dana R Sunblad, Claudia S Miller

Subject: Medicine & Pharmacology, General Medical Research Keywords: Chemical Intolerance, Drug Intolerance, Food Intolerance, QEESI, BREESI, Multiple Chemical Sensitivity, Toxicant-induced Loss of Tolerance, Prevalence

Online: 25 June 2021 (11:49:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202206.0090.v1

Ecotype Division and Chemical Diversity of Cynomorium songaricum from Different Geographical Regions

Xinke Zhang, Xiao Sun, Yujing Miao, Min Zhang, Lixia Tian, Chang Liu, Linfang Huang

Subject: Biology, Plant Sciences Keywords: Cynomorium songaricum; ecotype division; chemical diversity; metabolomics

Online: 7 June 2022 (02:54:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202202.0299.v1

Plasma Chemical Production Technology of AlN as High Thermal Conductivity Material

Daniil Aleksandrov, Artem Kim, Pavel Novikov, Anatoly Popovich

Subject: Materials Science, Metallurgy Keywords: aluminum nitride; plasma chemical synthesis; nitride ceramics

Online: 23 February 2022 (15:01:18 CET)

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Preprint REVIEW | doi:10.20944/preprints202105.0036.v2

A Primer on Harnessing Non-enzymatic Posttranslational Modifications for Drug Design

Marcus Long, Phillippe Ly, Yimon Aye

Subject: Chemistry, Analytical Chemistry Keywords: Electrophile; Drug Design; Covalent Drug; Chemical Biology

Online: 19 October 2021 (10:28:15 CEST)

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Working Paper ARTICLE

Efficacy of Chemical Herbicides Using a Novel Encapsulated Delivery Mechanism for Mimosa Bush (Vachellia farnesiana) Control

Amelia Limbongan, Shane Campbell, Victor Galea

Subject: Biology, Agricultural Sciences & Agronomy Keywords: mimosa bush; control; chemical herbicides; encapsulation; implantation

Online: 22 September 2021 (11:48:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202102.0254.v1

Nutritional Value of Five Rangeland Plants Using Gas Production Technique

Ebrahim Talebi, Mostafa Yousef-Elahi, Mohammad Reza Dehghani, Asghar Salmani

Subject: Biology, Anatomy & Morphology Keywords: Chemical composition; Dry matter digestibility; Gas test

Online: 10 February 2021 (12:32:21 CET)

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Preprint HYPOTHESIS | doi:10.20944/preprints202009.0588.v1

Is the Electrohypersensitive Patient's Headache a Variant of the Migraine Disease Mediated by TRPA1 Receptors?

Frédéric Greco

Subject: Medicine & Pharmacology, Clinical Neurology Keywords: electromagnetic hypersensitivity; multiple chemical sensitivity; migraine; TRPA1

Online: 24 September 2020 (18:22:45 CEST)

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Working Paper ARTICLE

Characterization of PM2.5 at a Traffic Site Using Several Integrated Analytical Techniques

Naser Hamdan, Hussain Alawadhi, Mohamed Shameer

Subject: Earth Sciences, Environmental Sciences Keywords: PM2.5; chemical composition; analytical techniques; traffic site

Online: 10 March 2020 (11:12:29 CET)

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Preprint ARTICLE | doi:10.20944/preprints201910.0356.v1

Integrated Geoelectric and Hydrogeochemical Survey to Analyze the Potential of Underground Water in Solok, West Sumatra, Indonesia

Juandi Muhammad, Nur Islami

Subject: Earth Sciences, Environmental Sciences Keywords: potential; groundwater; geoelectrical; chemical parameter; physical parameter

Online: 30 October 2019 (10:20:22 CET)

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Working Paper ARTICLE

Monomolecular Films of Diacylic Diperoxides on the Water-Air Interface

Volodymyr Dutka, Olena Aksimentyeva, Yaroslav Kovalskyi, Nataliya Oshchapovska

Subject: Chemistry, Physical Chemistry Keywords: diperoxides; monomolecular layers; quantum-chemical calculation; conformation

Online: 28 March 2019 (09:33:41 CET)

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Preprint CONCEPT PAPER | doi:10.20944/preprints201612.0111.v2

Nano Metal Dioxide Incorporated Conversion Phosphate Coatings—A Chemical Approach

Nilesh S. Bagal, Vaibhav S. Kathavate, Pravin P. Deshpande

Subject: Materials Science, Surfaces, Coatings & Films Keywords: chemical phosphate coating; EIS; nano TiO2; TAFEL

Online: 23 December 2016 (10:23:24 CET)

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Preprint ARTICLE | doi:10.20944/preprints202301.0090.v1

Physical, Thermal, and Chemical Properties of Fly Ash Cenospheres Obtained for Different Sources

Andrei Shishkin*, Vitaliijs Abramovskis, Ilmars Zalite, Ashish Kumar Singh, Gundars Mezinskis, Vladimir Popov, Jurijs Ozolins

Subject: Materials Science, Surfaces, Coatings & Films Keywords: Hollow microballons; cenospheres; ceramics phase composition; chemical composition

Online: 5 January 2023 (02:31:05 CET)

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Preprint REVIEW | doi:10.20944/preprints202210.0212.v1

Catalytic Hydrolysis of Organophosphorus 1 Nerve Agents by Metal-organic Frameworks: What Happens Next?

Yunzhuo Li

Subject: Chemistry, Applied Chemistry Keywords: metal-organic frameworks; chemical warfare agents; catalytic hydrolysis

Online: 14 October 2022 (11:36:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202205.0196.v1

Gamification In Chemical Engineering: A Research Study

Héctor de Paz Carmona, María Emma Borges Chinea

Subject: Social Sciences, Education Studies Keywords: gamification methodology; teaching strategies; online teaching; chemical engineering

Online: 16 May 2022 (04:08:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202203.0018.v1

Investigating the Potential Use of Chemical Biopsy Devices to Characterize Brain Tumor Lipidomes

Joanna Bogusiewicz, Bogumiła Kupcewicz, Paulina Zofia Goryńska, Karol Jaroch, Krzysztof Goryński, Marcin Birski, Jacek Furtak, Dariusz Paczkowski, Marek Harat, Barbara Bojko

Subject: Medicine & Pharmacology, Oncology & Oncogenics Keywords: brain tumor; glioma; SPME; heterogeneity; lipids; chemical biopsy

Online: 1 March 2022 (11:13:07 CET)

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Preprint REVIEW | doi:10.20944/preprints202110.0424.v1

Potential Routes and Innovative Technologies for Valorisation of Cassava Peels

Bemgba B. Nyakuma

Subject: Engineering, Energy & Fuel Technology Keywords: Cassava peels; valorisation; thermal; thermo-chemical; biochemical; biogas

Online: 28 October 2021 (07:27:14 CEST)

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Preprint REVIEW | doi:10.20944/preprints202108.0386.v1

Clove Essential Oil (Syzygium aromaticum L. Myrtaceae): Extraction, Chemical Composition, Food Applications and Essential Bioactivities for Human Health

José Nabor Haro-González, Gustavo Adolfo Castillo-Herrera, Moisés Martínez-Velázquez, Hugo Espinosa-Andrews

Subject: Life Sciences, Biotechnology Keywords: Clove essential oil; biological activity; chemical composition, extraction.

Online: 18 August 2021 (14:19:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202108.0344.v1

The Effect of Silica Dissolution on Reservoir Properties during Alkaline-Surfactant-Polymer (ASP) Flooding

Ahmed Fatah

Subject: Engineering, Energy & Fuel Technology Keywords: Silica dissolution; Silica solubility; Chemical EOR; Porosity; Permeability

Online: 16 August 2021 (13:58:28 CEST)

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Chemical flooding is one of the effective methods to recover large volumes of oil from sandstone formations after primary depletion. However, silica dissolution often occurs during Alkaline-Surfactant-Polymer (ASP) flooding, affecting the petro-physical properties of the formation. To address this issue, samples from Berea sandstone formations were treated with various brine solutions, through static tube tests and core flooding experiments. Analytical tests such as DR/2800 spectrophotometer and scanning electron microscope were used to evaluate the silica solubility and the alteration in mineral content. The results indicated that the silicate contents decreased after the saturation due to silica solubility in the solution. Increasing brine salinity to 40,000ppm and introducing Magnesium and Calcium ions to the solution, reduces the silicate contents by 5.03 % and 7.32 %. Moreover, saturating the samples with ASP solution, further reduced the silicate contents by 14.86 %. This reduction is associated with a relative increase in silica solubility and pH of the solution. Silica dissolution affects the pore microstructure, which resulted in increasing the porosity and pore volume after the core flooding. The injection of the ASP solution increased the porosity by 5.83%, thus the pore volume increased from 17.72 to 18.76cc. This is associated with the high silica solubility and the increase of solution pH in the ASP solution. The permeability of the samples generally reduced after the core flooding, due to the silica solubility. However, injecting the ASP solution, resulted in a major reduction of the permeability by more than 75%. These changes in the petro-physical properties can lead to severe formation damage, and affect hydrocarbon production. This study assists in understanding the impact of silica dissolution during ASP treatment and addresses the factors involved. Efficient utilization of chemical flooding can help mitigating silicate scaling within the formation, and extend field productivity.

Working Paper ARTICLE

ChemNODE: A Neural Ordinary Differential Equations Approach for Chemical Kinetics Solvers

Opeoluwa Owoyele, Pinaki Pal

Subject: Mathematics & Computer Science, Algebra & Number Theory Keywords: neural ordinary differential equations; machine learning; chemical kinetics

Online: 4 February 2021 (10:54:30 CET)

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Preprint ARTICLE | doi:10.20944/preprints202002.0274.v1

Effect of Genotypic and Phenotypic Variations on Essential Oil Aromatic Profiles of Makwhaen Fruits

Trid Sriwichai, Tonapha Phusadee, Jiratchaya Wisetkomolmat, Korawan sringarm, Supamit Mekchay, Kittisak Jantanasakulwong, Kiattisak Duangmal, Sarana Sommano

Subject: Chemistry, Food Chemistry Keywords: Chemical profiles; taxonomical description; volatile compositions; Zanthoxylum spp.

Online: 19 February 2020 (10:54:48 CET)

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Preprint ARTICLE | doi:10.20944/preprints202002.0248.v1

Predictive Modeling of Henry’s Law Constant in Chemical Structures Using LSSVM and ANFIS Algorithms

Qikai Wang, Aiqin Yao, Manouchehr Shokri, Adrienn A. Dineva

Subject: Mathematics & Computer Science, Computational Mathematics Keywords: Henry’s Law; chemical structure; Artificial intelligence; LSSVM; ANFIS

Online: 17 February 2020 (15:31:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints202002.0151.v1

Ternary Fingerprints with Reference Odor for Fluctuation-Enhanced Sensing

Xiaoyu Yu, Laszlo Kish, Jean-Luc Seguin, Maria King

Subject: Keywords: fluctuation-enhanced sensing; chemical fingerprints; bacteria; cow manure

Online: 11 February 2020 (15:01:49 CET)

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Preprint ARTICLE | doi:10.20944/preprints201911.0027.v1

Gas permeation Property of Silicon Carbide Membrane Synthesized by Counter Diffusion Chemical Vapor Deposition

Takayuki Nagano, Koji Sato, Koichi Kawahara

Subject: Materials Science, Other Keywords: hydrogen; amorphous; silicon carbide; alumina; chemical vapor deposition

Online: 3 November 2019 (18:14:26 CET)

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Preprint ARTICLE | doi:10.20944/preprints201904.0256.v1

Effects of Magnetic Fields on the Properties of Water Treatedt by Reversed Osmosis

Mahdi O. Karkush, Mahmoud D. Ahmed, Salim M. Al-Ani

Subject: Engineering, Civil Engineering Keywords: magnetic field; intensity; chemical; electrical properties; osmosis water

Online: 23 April 2019 (12:50:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201811.0386.v1

Improved Organic Dye Degradation Using Highly Efficient MXene Composites

M. Abdullah Iqbal, S. Irfan Ali, Ayesha Tariq, Mohammad Z. Iqbal, Syed Rizwan

Subject: Materials Science, Nanotechnology Keywords: doped-ferrites nanoparticles/MXene; nanocomposites; photocatalysis; chemical etching

Online: 16 November 2018 (07:39:20 CET)

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Preprint ARTICLE | doi:10.20944/preprints201810.0520.v1

Evidence of Reactivity in the Membrane for the Unstable Monochloramine during MIMS Analysis

Essyllt Louarn, A. Monem Adli-Idlibi, Julien Leprovost, Michel Héninger, Hélène Mestdagh

Subject: Chemistry, Analytical Chemistry Keywords: MIMS; monochloramine; FTICR; chemical ionization; in-membrane reaction

Online: 23 October 2018 (05:44:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0199.v1

First case of Conyza canadensis from Hungary with multiple resistance to glyphosate and flazasulfuron

Candelario Palma-Bautista, Behroz Khalil Tahmasebi, Pablo Tomás Fernández-Moreno, Antonia María Rojano-Delgado, Ricardo Alcántara de la Cruz, Rafael De Prado

Subject: Biology, Agricultural Sciences & Agronomy Keywords: ALS-inhibitors; horseweed; multiple-resistance; alternative chemical control

Online: 11 July 2018 (11:56:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201802.0074.v2

The Second Law Of Thermodynamics as a Force Law

Jürgen Schlitter

Subject: Chemistry, Physical Chemistry Keywords: statistical mechanics; irreversibility; arrow of time; chemical dynamics

Online: 5 March 2018 (05:54:00 CET)

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Preprint ARTICLE | doi:10.20944/preprints201803.0019.v1

Elucidating the Importance of Numeracy Skills for Undergraduate Students in Life Sciences Using the Oxygen Requirement in Yeast as an Example

Vijayendran Raghavendran, Karel Olavarria, Andreas Karoly Gombert

Subject: Life Sciences, Biotechnology Keywords: diffusion; gas transfer; fermentation; uptake rate; physio-chemical

Online: 2 March 2018 (07:01:22 CET)

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Preprint ARTICLE | doi:10.20944/preprints201703.0082.v1

Comparative Physicochemical and Microbiological Qualities of Source and Stored Household Waters in Some Selected Communities in Southwestern Nigeria

Mary A. Bisi-Johnson, Kehinde A. Adediran, Saheed A. Akinola, Elizabeth O. Popoola, Anthony I. Okoh

Subject: Life Sciences, Microbiology Keywords: water; physical; chemical; microbiological; quality; household; stored; source

Online: 14 March 2017 (10:49:43 CET)

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Preprint REVIEW | doi:10.20944/preprints202209.0193.v1

Surface Engineering of Nanomaterials: Processing and Applications

Mainak Saha

Subject: Engineering, Other Keywords: nanomaterials; chemical vapour deposition; atomic layer deposition; pseudocapacitors; batteries

Online: 14 September 2022 (05:46:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202207.0312.v1

Rapid Assessment of Lipidomics Sample Purity and Quantity Using Fourier-Transform Infrared Spectroscopy

Harley Robinson, Jeffrey Molendijk, Alok K. Shah, Tony Rahman, Gregory J. Anderson, Michelle M. Hill

Subject: Life Sciences, Biotechnology Keywords: lipids; phospholipids; sphingolipids; triglycerides; FTIR; mass spectrometry; chemical contaminants

Online: 21 July 2022 (08:03:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202106.0722.v1

Cytotoxic Evaluation of Hair Relaxers and Straighteners Actives in Human-Derived Skin Cells

Maribanyana Lebeko, Elvis Kidzeru, Ntombenhle Sishi, Jamie Pillaye, Thulisa Mkatazo, Afolake Arowolo, Nonhlanhla Khumalo

Subject: Medicine & Pharmacology, Allergology Keywords: Hair cosmetic toxicity; Skin models; Chemical hair straighteners actives

Online: 30 June 2021 (09:38:38 CEST)

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Preprint REVIEW | doi:10.20944/preprints202104.0069.v1

Heat Stress in Broiler Chickens and the Effect of Dietary Polyphenols, with Special Reference to Willow (Salix spp.) Bark Supplements - A Review

Mihaela Saracila, Tatiana Dumitra Panaite, Camelia Puia Papuc, Rodica Diana Criste

Subject: Biology, Anatomy & Morphology Keywords: willow bark; chemical characterization; mechanism; broiler diet; heat stress

Online: 2 April 2021 (14:09:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202103.0453.v1

Effects of Ethyl methanesulfonate (EMS) on Seedling and Yield Contributing Traits in Basmati Rice

Muhammad Rashid, Areeqa Shamshad, Ljupcho Jankuloski

Subject: Keywords: Lethal Dose; Chemical Mutagenesis; Ethyl methanesulfonate; Oryza Sativa L

Online: 17 March 2021 (16:55:21 CET)

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Preprint ARTICLE | doi:10.20944/preprints202101.0333.v2

Synthesis and Deposition of Thermochromic VO2 Thin Films from Peroxide-based Chemical Solutions

Matthias Van Zele, Hannes Rijckaert, Davy Deduytsche, Christophe Detavernier, Isabel Van Driessche, Dirk Poelman, Klaartje De Buysser

Subject: Chemistry, Applied Chemistry Keywords: Wet chemical deposition; crystalline thin films; vanadium dioxide; thermochromism

Online: 17 February 2021 (10:38:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints202011.0586.v1

Chemical Compositions and Antioxidant Activities of Indonesian Citrus Essential Oils and Their Elucidation Using Principal Component Analysis

Euis Julaeha, Kristin Shinta Dewi, Mohamad Nurzaman, Tatang Wahyudi, Tati Herlina, Ari Hardianto

Subject: Chemistry, Analytical Chemistry Keywords: chemical composition; antioxidant; Citrus; essential oils; Principal Component Analysis.

Online: 23 November 2020 (14:19:03 CET)

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Working Paper REVIEW

Carbones and Carbon Atom as Ligands in Transition Metal Complexes

Lili Zhao, Chaoqun Chai, Wolfgang Petz, Gernot Frenking

Subject: Chemistry, General & Theoretical Chemistry Keywords: carbone complexes; carbido complexes; transition metal complexes; chemical bonding

Online: 25 August 2020 (04:16:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201910.0108.v1

Investigation of the Effects of Steam Injection on Equilibrium Products and Thermodynamic Properties of Diesel and Biodiesel Fuels

Jean Paul Gram Shou, Marcel Obounou, Timoléon Crépin Kofané, Mahamat Hassane Babikir

Subject: Engineering, Energy & Fuel Technology Keywords: chemical equilibrium products; combustion; biodiesel; diesel; steam injection method

Online: 10 October 2019 (04:27:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201904.0192.v1

Natural Products from Cyanobacteria: Focus on Beneficial Activities

Justine Demay, Cécile Bernard, Anita Reinhardt, Benjamin Marie

Subject: Life Sciences, Microbiology Keywords: cyanobacteria; natural products; metabolites; biological activities; producers; chemical classes

Online: 17 April 2019 (06:05:45 CEST)

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Cyanobacteria are photosynthetic microorganisms that colonize diverse environments worldwide, ranging from ocean to freshwaters, soils, and extreme environments. Their adaptation capacities and the diversity of natural products (molecules, metabolites, or compounds) that they synthesize support the cyanobacterial success for the colonization of their respective ecological niches. Although cyanobacteria are well-known for their toxin production and their relative deleterious consequences, they also produce a large variety of molecules that exhibit beneficial properties with high potential for various fields of application (e.g., synthetic analog of the dolastatin 10 used against Hodgkin lymphoma). The present review specially focuses on the beneficial activities of cyanobacterial molecules described so far. Based on an analysis of 670 papers, it appears that more than 90 genera of cyanobacteria have been found to produce compounds with potential beneficial activities, most of them belonging to the orders Oscillatoriales, Nostocales Chroococcales, and Synechococcales. The rest of the cyanobacterial orders (i.e., Pleurocapsales, Chroococcidiopsales, and Gloeobacterales) remain poorly explored in terms of their molecular diversity and relative bioactivity. The diverse cyanobacterial molecules presenting beneficial bioactivities belong to 10 different chemical classes (alkaloids, depsipeptides, lipopeptides, macrolides/lactones, peptides, terpenes, polysaccharides, lipids, polyketides, and others) that exhibit 14 major kinds of bioactivity. However, no direct relation between the chemical class and the bioactivity of these molecules has been demonstrated. We further selected and specifically described 50 molecule families according to their specific bioactivities and their potential uses in pharmacology, cosmetology, agriculture, or other specific fields of interest. This up-to-date review takes advantage of the recent progresses in genome sequencing and biosynthetic pathway elucidation, and presents new perspectives for the rational discovery of new cyanobacterial metabolites with beneficial bioactivity.

Preprint ARTICLE | doi:10.20944/preprints201809.0069.v1

Single-Atom Catalysis: A Practically Viable Technology?

Rosaria Ciriminna, Mina Ghahremani, B Karimi, Mario Pagliaro, Rafael Luque

Subject: Chemistry, Organic Chemistry Keywords: Single-atom catalysis; heterogeneous catalysis; chemical innovation; low atomicity

Online: 4 September 2018 (14:55:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201802.0115.v1

Incorporating Sustainability into Engineering Education Using e-Learning

Edmond Sanganyado

Subject: Social Sciences, Education Studies Keywords: sustainability; Green Engineering; curriculum development; chemical education; engineering education

Online: 17 February 2018 (13:23:39 CET)

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Preprint ARTICLE | doi:10.20944/preprints201701.0008.v1

Fabrication of Mechanically Stable Superhydrophobic Aluminium Surface with Excellent Self-Cleaning and Anti-Fogging Properties

Priya Varshney, Soumya Mohapatra, Aditya Kumar

Subject: Materials Science, Surfaces, Coatings & Films Keywords: Superhydrophobic; Water-repellent; Chemical etching; Self-cleaning; Anti-fogging

Online: 2 January 2017 (17:27:05 CET)

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Preprint ARTICLE | doi:10.20944/preprints201610.0059.v1

The Behavior of Arsenic during the Thermal and Chemical Decomposition of the Ammonium–Arsenic Jarosite

Mizraim Flores, Francisco Patiño, Elia G. Palacios, Iván Reyes, Martín Reyes, Victor H. Flores, Julio C. Juárez, Thangarasu Pandiyan

Subject: Earth Sciences, Other Keywords: ammonium–arsenic jarosite; characterization; chemical decomposition and thermal decomposition

Online: 14 October 2016 (11:27:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202211.0370.v1

Study on Antibacterial Activity and Structure of Chemically Modified Lysozyme

Shengwei Wang, Tianyi Wang

Subject: Chemistry, Food Chemistry Keywords: hen egg white lysozyme; chemical modification; antibacterial activity; secondary structure

Online: 21 November 2022 (04:40:14 CET)

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Preprint ARTICLE | doi:10.20944/preprints202207.0241.v2

Hydrothermal Upgrading of Waste Plastics: An Environmental Impact Study

Matthew Ozoemena, Stuart Coles

Subject: Materials Science, Polymers & Plastics Keywords: hydrothermal upgrading; naphtha; life cycle assessment; chemical recycling; waste plastic

Online: 21 November 2022 (02:38:44 CET)

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Preprint REVIEW | doi:10.20944/preprints202112.0160.v1

Light-Addressable Potentiometric Sensors in Microfluidics

xueliang li, shibin liu, jie tan, chunsheng wu

Subject: Engineering, Biomedical & Chemical Engineering Keywords: Light-Addressable Potentiometric Sensor (LAPS); Micropump; Microfluidics; Chemical Sensors; Biosensors

Online: 9 December 2021 (15:43:16 CET)

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Preprint REVIEW | doi:10.20944/preprints202111.0546.v1

Review on Chemical Graph Theory and Its Application in Computer-Assisted Structure Elucidation

Mehmet Aziz Yirik, Kumsal Ecem Colpan, Saskia Schmidt, Maria Sorokina, Christoph Steinbeck

Subject: Chemistry, Analytical Chemistry Keywords: chemical graph theory; computational chemistry; CASE; computer-assisted structure elucidation

Online: 29 November 2021 (15:35:43 CET)

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Preprint ARTICLE | doi:10.20944/preprints202105.0697.v1

Nitrate-Alkaline Pulp From Non-Wood Plants

Kateřina Hájková, Jiří Bouček, Petr Procházka, Petr Kalous, Dominik Budský

Subject: Biology, Anatomy & Morphology Keywords: nitrate-alkaline pulp; Black Mustard; Camelina; tensile index; chemical analysis

Online: 28 May 2021 (11:32:38 CEST)

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Preprint CONCEPT PAPER | doi:10.20944/preprints202105.0212.v1

Another Look at the Water Phases that Exist Under Room Conditions

Татьяна Яхно

Subject: Materials Science, Biomaterials Keywords: phases of water; microstructure; dispersion; physical and chemical properties; polywater

Online: 10 May 2021 (15:25:51 CEST)

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Preprint REVIEW | doi:10.20944/preprints202010.0629.v1

A Comprehensive Review of the Coffee Leaf Miner Leucoptera Coffeella (Lepidoptera: Lyonetiidae), With Special Regard to Neotropical Impacts, Pest Management and Control

Juliana Dantas, Isabela Motta, Leonardo Vidal, João Bílio, Júlia M. Pupe, Adriano Veiga, Carlos H. S. Carvalho, Rogerio B. Lopes, Thales L. Rocha, Luciano P. Silva, José R. Pujol-Luz, Érika V.S. Albuquerque

Subject: Biology, Anatomy & Morphology Keywords: resistance; cultivar; biopesticide; biological control; chemical control; life cycle; CLM

Online: 30 October 2020 (08:52:51 CET)

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Preprint ARTICLE | doi:10.20944/preprints202007.0722.v1

Water Quality Assessment of Keenjhar Lake, Thatta

Mushtaq Ahmed Nizamani

Subject: Engineering, Civil Engineering Keywords: Pollution; water quality; Keenjhar lake; environmental impacts; Physico-chemical parameters

Online: 30 July 2020 (12:24:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0584.v1

Bio-organic, Bio-chemical Fertilizers and N-Fixer (N-Bio Booster) Improve Paddy Yields in the Field Trials at Langkat in Medan, Indonesia

Shih Hao Tony Peng, Chee Kong Yap, Roslan Arshad, Ee Wen Chai

Subject: Biology, Agricultural Sciences & Agronomy Keywords: Bio-organic fertilizer; Bio-chemical fertilizer; Grain yield; N-Fixer

Online: 24 July 2020 (13:46:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201811.0420.v1

UV Curable Urethane Acrylate Resin from Palm Fatty Acid Distillate

Kim Teck Teo, Aziz Hassan, Seng Neon Gan

Subject: Materials Science, Surfaces, Coatings & Films Keywords: PFAD; urethane acrylate; crosslinking, UV curing, chemical resistant; film hardness

Online: 19 November 2018 (06:40:22 CET)

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Preprint ARTICLE | doi:10.20944/preprints201809.0347.v1

Cell Cycle Arrest in Different Cancer Cell Lines “Liver, Breast, and Colon” Induce Apoptosis under the Influence of the Chemical Content of Aeluropus lagopoides Leaves Extracts

Kamel Ahmed Saleh, Tahani Hassan Asiri, Serageldin Ibrahim Elbehairi, Mohammed Ali Alshehry, Mohammad Yahya Elfaifi, Adel Mahmoud Al-Ghazzwi

Subject: Biology, Physiology Keywords: Aeluropus lagopoides; HepG2; HCT-116; MCF-7; apoptosis; chemical composition

Online: 18 September 2018 (11:40:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201806.0423.v1

Multi-Scale Computational Simulation of Amorphous Silicates. Structural, Dielectric and Vibrational Spectroscopic Properties

José Ángel Martínez-González, Javier Navarro-Ruiz, Albert Rimola

Subject: Physical Sciences, Atomic & Molecular Physics Keywords: DFT; periodic simulations; amorphous minerals; physico-chemical properties; super-cell

Online: 26 June 2018 (13:10:49 CEST)

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Silicates are among the most abundant and important inorganic materials, not only in the Earth’s crust but also in the interstellar medium in the form of micro-/nano-particles or embedded in the matrices of comets, meteorites and other asteroidal bodies. Although the crystalline phases of silicates are indeed present in Nature, amorphous forms are also highly abundant. Here we report a theoretical investigation of the structural, dielectric and vibrational properties of the amorphous bulk for forsterite (Mg₂SiO₄) as a silicate test case by a combined approach of classical molecular dynamics (MD) simulations for structure evolution, and periodic quantum mechanical DFT calculations for electronic structure analysis. Using classical MD based on an empirical partial charge rigid ionic model within a melt-quenching scheme at different temperatures performed with the GULP 4.0 code amorphous bulk structures for Mg₂SiO₄ were generated using as initial guess the crystalline phase. This has been done for bulks with three different unit cell sizes adopting a super-cell approach; i.e., 1×1×2, 2×1×2 and 2×2×2. The radial distribution functions indicated a good degree of amorphisation of the structures. Periodic B3LYP-geometry optimizations performed with the CRYSTAL14 code on the generated amorphous systems were used to analyze their structure, to calculate their high frequency dielectric constants (ε_∞), and to simulate the IR, Raman and reflectance spectra, which were compared with the experimental and theoretical crystalline Mg₂SiO₄. The most significant changes of the physico-chemical properties of the amorphous systems compared to the crystalline ones are presented and discussed (e.g., larger deviations in the bond distances and angles, broadening of the IR bands, etc.), which are consistent with their disordered nature. It is also shown that by increasing the unit cell size the bulk structures present larger degree of amorphisation.

Preprint REVIEW | doi:10.20944/preprints201806.0385.v1

Adsorption Heat Storage: State of the Art and Future Perspectives

Salvatore Vasta, Vincenza Brancato, Davide La Rosa, Valeria Palomba, Giovanni Restuccia, Alessio Sapienza, Andrea Frazzica

Subject: Engineering, Mechanical Engineering Keywords: adsorption; heat storage; thermo-chemical; zeolite; silica gel; adsorbent materials

Online: 25 June 2018 (11:56:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201803.0270.v1

An Exploration of the Sub-Register of Chemical Engineering Research Papers Published in English

Myrto-Panagiota Zacharof, Anna Charalambidou

Subject: Arts & Humanities, Linguistics Keywords: chemical engineering; journal publications; lexical choices; collocations; impact factor; training

Online: 30 March 2018 (11:25:20 CEST)

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Preprint REVIEW | doi:10.20944/preprints201801.0047.v1

The Molecules and Mechanisms Underlying the Antimicrobial Activity of Escapin, an L–Amino Acid Oxidase from the Ink of Sea Hares

Charles D. Derby, Eric S. Gilbert, Phang C. Tai

Subject: Life Sciences, Microbiology Keywords: antimicrobial; Aplysia; biofilm; chemical defense; Escapin; L–amino acid oxidase

Online: 8 January 2018 (08:29:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints201801.0011.v1

Critical Nutrient Concentrations and DRIS Norms for Pinus patula

Agustina Sánchez-Parada, Miguel Ángel López-López, Armando Gómez-Guerrero, Marlín Pérez-Suárez

Subject: Biology, Forestry Keywords: plant nutrition; chemical fertilization; nutrient diagnosis; forest plantation; foliar nutrients

Online: 2 January 2018 (10:25:46 CET)

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Preprint ARTICLE | doi:10.20944/preprints201710.0134.v1

Improvement in Mechanical Properties of Cantala Fiber and Short Cantala/Recycled High-Density Polyethylene Composite through Chemical Treatment

Wijang Wisnu Raharjo, Rudy Soenoko, Yudy Surya Irawan, Agus Suprapto

Subject: Materials Science, Biomaterials Keywords: chemical treatment; cantala fiber; mechanical properties; recycled high-density polyethylene

Online: 20 October 2017 (03:19:47 CEST)

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Preprint CASE REPORT | doi:10.20944/preprints201701.0136.v1

Eco-Safety Assessment of Glyoxal-Containing Cellulose Ether on Freeze-Dried Microbial Strain, Cyanobacteria, Daphnia, and Zebrafish

Chang-Beom Park, Min Ju Song, Nak Woon Choi, Sunghoon Kim, Hyun Pyo Jeon, Sanghun Kim, Youngjun Kim

Subject: Life Sciences, Biochemistry Keywords: Aquatic-toxic effects; EU chemical regulation; Glyoxal-containing cellulose ether

Online: 31 January 2017 (12:10:39 CET)

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Preprint ARTICLE | doi:10.20944/preprints202207.0214.v1

In-vitro Study of Chemical Composition, Antimicrobial and Antioxidant Properties of Adiantum capillus-veneris L. Essential Oil

Iman Nasrollahi, Ebrahim Talebi, Zahra Bashardoost

Subject: Medicine & Pharmacology, Pharmacology & Toxicology Keywords: Adiantum capillus-veneris L.; Chemical compounds; Antioxidant; Antimicrobial; Essential oil; DPPH

Online: 14 July 2022 (11:32:37 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202105.0426.v1

Changes in Crop Layout, Effects on Farmland Nutrient Balance: A Case Study in The West Liaohe River Basin, China

Zijuan Zhao, Beilei Fan

Subject: Earth Sciences, Atmospheric Science Keywords: Crop layout; Nutrient balance; Chemical fertilizer; Nutrient surpluses; Nutrient use efficiency

Online: 18 May 2021 (12:59:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202105.0209.v1

A Multi Scale Minero-chemical Analyses of Biomass Ashes: A Key to Evaluate their Danger vs Benefit

Paola Comodi, Azzurra Zucchini, Umberto Susta, Costanza Cambi, Riccardo Vivani, Gianluca Cavalaglio, Franco Cotana

Subject: Materials Science, Biomaterials Keywords: biomass; fly ashes; X-ray diffraction; chemical analysis; multi-methodic analysis

Online: 10 May 2021 (15:12:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202102.0080.v1

Metabolite Structure Assignment of Seized Products Containing Cathinone Derivatives through High Resolution Analytical Techniques

João Gonçalves, Vera L. Alves, Joselin Aguiar, Maria Caldeira, Helena Teixeira, José S. Câmara

Subject: Chemistry, Analytical Chemistry Keywords: Chemical characterization; New psychoactive substances; Synthetic cathinones; FTIR; GC-MS; NMR

Online: 2 February 2021 (09:44:23 CET)

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Preprint ARTICLE | doi:10.20944/preprints202101.0352.v1

Thermodynamic Impact of Mineral Surfaces on Amino Acid Polymerization: Aspartate Dimerization on Ferrihydrite, Anatase and γ-alumina

Norio Kitadai, Kumiko Nishiuchi

Subject: Earth Sciences, Environmental Sciences Keywords: adsorption; astrobiology; chemical evolution; origin of life; polymerization; surface complexation modeling

Online: 18 January 2021 (15:01:36 CET)

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Preprint ARTICLE | doi:10.20944/preprints202101.0182.v1

Overview of the French Operational Network for In Situ Observation of PM Chemical Composition and Sources in Urban Environments (CARA Program)

Olivier Favez, Samuël Weber, Jean-Eudes Petit, Laurent Y. Alleman, Alexandre Albinet, Véronique Riffault, Benjamin Chazeau, Tanguy Amodeo, Dalia Salameh, Yunjiang Zhang, Deepchandra Srivastava, Abdoulaye Samaké, Robin Aujay, Arnaud Papin, Nicolas Bonnaire, Carole Boullanger, Mélodie Chatain, Florie Chevrier, Anaïs Detournay, Marta Dominik-Sègue, Raphaële Falhun, Céline Garbin, Véronique Ghersi, Guillaume Grignion, Gilles Levigoureux, Sabrina Pontet, Jérôme Rangognio, Shouwen Zhang, Jean-Luc Besombes, Sébastien Conil, Gaelle Uzu, Joël Savarino, Nicolas Marchand, Valérie Gros, Caroline Marchand, Jean-Luc Jaffrezo, Eva Leoz-Garziandia

Subject: Earth Sciences, Atmospheric Science Keywords: France; urban air quality; aerosol chemical composition; source apportionment; monitoring strategies

Online: 11 January 2021 (10:57:48 CET)

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Working Paper CONCEPT PAPER

Process Design and Sustainable Development - a European Perspective

Peter Glavič, Zorka Novak Pintarič, Miloš Bogataj

Subject: Engineering, Biomedical & Chemical Engineering Keywords: process design; sustainable development; chemical industry; process industry; megatrends; design tools

Online: 5 January 2021 (11:32:26 CET)

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Preprint REVIEW | doi:10.20944/preprints202004.0012.v1

LANaPD: Towards a Unified Latin America Natural Products Database

José L. Medina-Franco

Subject: Chemistry, General & Theoretical Chemistry Keywords: chemoinformatics; chemical space; database; LANaPD; molecular diversity; drug discovery; natural sources

Online: 2 April 2020 (04:47:13 CEST)

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Working Paper REVIEW

Potential Remedial Measures for the Epidemic Outbreaks of Novel Coronavirus by Control Fire Technique

Khan M.G. Mostofa

Subject: Keywords: Coronavirus; Remedial measures; Disinfection/sterilization; Control fire/flame technique; Chemical technique

Online: 11 February 2020 (09:33:51 CET)

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Preprint REVIEW | doi:10.20944/preprints201911.0221.v1

Chemical Constituents, Antimicrobial Activity and Food Preservative Characteristics of Aloe vera Gel

İbrahim Kahramanoğlu, Chuying Chen, Jinyin Chen, Chunpeng Wan

Subject: Biology, Agricultural Sciences & Agronomy Keywords: Aloe vera; chemical constituents; antimicrobial activity; postharvest storage; biodegradable; edible coating

Online: 19 November 2019 (03:33:32 CET)

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Preprint ARTICLE | doi:10.20944/preprints201911.0104.v1

Chemical Synthesis, Efficacy and Safety of Antimalarial Hybrid Drug Comprising of Sarcosine and Aniline Pharmacophores as Scaffolds

Jean Baptiste Niyibizi, Peter G. Kirira, Francis T. Kimani, Fiona Oyatsi, Joseph K. Ng’ang’a

Subject: Keywords: chemical synthesis; IC50; ED50; CC50; antimalarial resistance; sarcosine-aniline hybrid drug

Online: 10 November 2019 (10:10:15 CET)

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Preprint REVIEW | doi:10.20944/preprints201909.0020.v1

Phytoremediation of Polluted Waterbodies with Aquatic plants: Recent Progress on Heavy Metal and Organic Pollutants

Enyoh Christian, Isiuku Beniah

Subject: Chemistry, Analytical Chemistry Keywords: chemical pollutants; chemometrics; constructed wetlands; hydroponics; macrophytes; models; toxicity; water pollution

Online: 2 September 2019 (09:45:46 CEST)

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Preprint REVIEW | doi:10.20944/preprints201905.0138.v1

Low-Power Detection of Food Preservatives by a Novel Nanowire-Based Sensor Array

Dario Zappa

Subject: Chemistry, Applied Chemistry Keywords: metal-oxides nanowires; chemical sensing; sensor array; electronic noses, food preservation

Online: 13 May 2019 (01:44:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201901.0185.v1

Surface Properties and Biocompatibility of Thick Film Materials Used in Ceramic Bioreactors

Heike Bartsch, Ralf Peipmann, Marcel Himmerlich, Marion Frant, Holger Rothe, Klaus Liefeith, Hartmut Witte

Subject: Engineering, Biomedical & Chemical Engineering Keywords: LTCC; thick film metallization; biocompatibility; surface properties; chemical composition; zeta potential

Online: 18 January 2019 (11:18:05 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0227.v1

Evaluation of the Bioavailability and Translocation of Selected Mobile Chemical Species by Brassica juncea and Spinacea oleracea L for a South African Power Utility Coal Fly Ash

Aluwani Shiridor Mashau, Mugera Wilson Gitari, Segun Ajayi Akinyemi

Subject: Chemistry, Other Keywords: coal fly ash; leachates; chemical species; pot culture experiments; translocation; bioconcentration

Online: 9 November 2018 (03:12:39 CET)

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This study evaluated the physicochemical, mineralogical properties, mobile chemical species’ bioavailability and translocation in Brassica juncea and Spinacea oleracea L plants of a South African coal fired power utility. Coal fly ash (CFA) disposal is associated with various environmental and health risks including air, soil, surface and ground water pollution due to the leaching of toxic chemical species; these ends up in food webs affecting human health, while repeated inhalation causes bronchitis, silicosis, hair loss and lung cancer. The morphology, chemical, and mineralogical composition of CFA were determined using Scanning Electron Microscopy (SEM), X-ray fluorescence (XRF) and X-ray Diffraction, respectively. In pot culture experiments, S. oleracea L and B. juncea plants were grown in three sets of pots containing CFA (set 1), soil (set 2) and a mixture of CFA plus soil at ratio 1:1 (50% CFA: 50% soil) (set 3), while no plants were grown in set 4 as a control for the leachate samples. SEM showed that surface morphology of CFA has a lower degree of sphericity with irregular agglomerations of many particles. The XRF results revealed that CFA contains 43.65%, 22.68% and 10.89% of SiO₂, Al₂O₃ and Fe₂O₃respectively which indicate that the CFA is an alumino-silicate material. While XRD showed that the coal CFA contains mullite as a major phase followed by quartz mineral phases. Chemical species such as Fe, Mn, B, Ba and Zn were accumulated highly in most parts of the plant species. However, B. juncea showed higher potential to accumulate chemical species as compared to S. oleracea L. The bioconcentration and translocation factors (BF and TF) showed that B. juncea was the most effective in terms of bioconcentration and translocation of most of the chemical species. This indicates that B. juncea has potential in application for phytoremediation of CFA dumps and could contribute to remediation of CFA dumps and reduction of potential health and environmental impacts associated with CFA.

Preprint ARTICLE | doi:10.20944/preprints201811.0091.v1

The Synthesis and Characterisations of Porous Thioamide-Sulfonated-Modified Poly (Acrylonitrile-Co-Divinylbenzene-80) as a Potential Sorbent to Capture Polar Analytes

Farhana Syakirah Ismail, Siti Nurul Ain Md. Jamil, Peter A. G. Cormack, Luqman Chuah Abdullah, Sazlinda Kamaruzaman, Rusli Daik

Subject: Chemistry, Applied Chemistry Keywords: polyacrylonitrile; chemical modification; thiourea; polar pharmaceuticals; sulphonation; dispersion-solid phase extraction

Online: 5 November 2018 (08:48:52 CET)

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Preprint REVIEW | doi:10.20944/preprints201810.0691.v1

Use of Electronic Noses in Seawater Quality Monitoring: a Systematic Review

Alessandro Tonacci, Francesco Sansone, Raffaele Conte, Claudio Domenici

Subject: Earth Sciences, Environmental Sciences Keywords: Chemical sensors; E-nose; Environmental monitoring; Seawater; Sensors; Volatile Organic Compounds

Online: 29 October 2018 (14:36:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints201808.0290.v2

High-Performance Thermal Management Nanocomposites: Silver Functionalized Graphene Nanosheets and Multiwalled Carbon Nanotube

Yongcun Zhou, Xiao Zhuang, Feixiang Wu, Feng Liu

Subject: Materials Science, Nanotechnology Keywords: chemical modification; electronics cooling; thermal management nanocomposites; thermal conductivity; silver nanoparticles

Online: 25 October 2018 (10:33:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0097.v1

Scaling Group Analysis of Mixed Bioconvective Flow in Nanofluid with Presence of Slips, MHD and Chemical Reactions

Mohd Faisal Mohd Basir, M. Jashim Uddin, Ahmad Izani Md. Ismail

Subject: Physical Sciences, Mathematical Physics Keywords: Bioconvection, Magnetohydrodynamics, Scaling group of transformations, Slip boundary conditions, Chemical reaction

Online: 5 October 2018 (11:39:39 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0456.v1

Micromorphological and Chemical Features of Soils as Evidence of Bronze Age Ancient Anthropogenic Impact (Late Bronze Age Muradymovo Settlement, Ural Region, Russia)

Alexandra Golyeva, Olga Khokhlova, Marina Lebedeva, Nikolay Shcherbakov, Iia Shuteleva

Subject: Earth Sciences, Environmental Sciences Keywords: Bronze Age settlement; modern soil; micromorphology; chemical properties; gypsum; anthropogenic impact

Online: 24 July 2018 (12:00:13 CEST)

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