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Preprint ARTICLE | doi:10.20944/preprints202010.0416.v1

Binary Black Hole Information Loss Paradox & Future Prospects

Ayan Mitra, Pritam Chattopadhyay, Goutam Paul, Vasilios Zarikas

Subject: Physical Sciences, Quantum Science And Technology Keywords: Binary Black hole; entanglement; monogamy; gravitational waves; quantum optics

Online: 20 October 2020 (17:05:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202008.0118.v1

Long-Term Habitual Exercise and Combination of β-hydroxy-β-methylbutyrate Plus Black Ginger Maintain Muscle Health in SAMP8 Mice

Kai Aoki, Masaki Konno, Katsuyuki Tokinoya, Katsunari Honda, Takuya Abe, Takeshi Nagata, Masaaki Takehara, Takehito Sugasawa, Kazuhiro Takekoshi, Hajime Ohmori

Subject: Biology And Life Sciences, Cell And Developmental Biology Keywords: Sarcopenia; β-hydroxy-β-methyl butyrate Calcium; Black ginger

Online: 5 August 2020 (09:51:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0037.v1

Development of an Improved Carotenoid Extraction Method and Characterisation of the Carotenoid Composition under Oxidative and Cold Stress in the Rock Inhabiting Fungus Knufia Petricola A95

Kerstin Flieger, Nicole Knabe, Jörg Toepel

Subject: Biology And Life Sciences, Immunology And Microbiology Keywords: Knufia petricola A95, HPLC analysis, carotenoids, black yeasts, didehydrolycopene

Online: 2 October 2018 (22:39:22 CEST)

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Preprint CASE REPORT | doi:10.20944/preprints202208.0269.v1

The Dark Universe Cosmology

Yang Immanuel Pachankis

Subject: Chemistry And Materials Science, Electrochemistry Keywords: white hole; black hole; nuclear astrophysics; black hole seeds; quantum fluctuation; thermal fluctuation; temporal information; time curvatures; quantum forces; NGC 3034; NGC 3372

Online: 15 August 2022 (15:42:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201712.0018.v1

Radical Scavenging and Biological Activities of Representative Anthocyanin Groupings from Pigment-Rich Fruits and Vegetables

Federica Blando, Nadia Calabriso, Helge Berland, Gabriele Maiorano, Carmela Gerardi, Maria Annunziata Carluccio, Øyvind M. Andersen

Subject: Chemistry And Materials Science, Food Chemistry Keywords: non-acylated anthocyanins; anthocyanins with aromatic acylation; SAR; mahaleb cherry; blackcurrant; black carrot; ‘Sun Black’ tomato; VCAM-1; ICAM-1; endothelial adhesion molecules

Online: 4 December 2017 (07:04:17 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1563.v1

Comparative Studies of Bioactivities and Chemical Components in Fresh and Black Garlics

Kanako Matsuse, Sho Hirata, Mostafa Abdelrahman, Tetsuya Nakajima, Yoshihito Iuchi, Satoshi Kambayashi, Masaru Okuda, Kimiko Kazumura, Benya Manochai, Masayoshi Shigyo

Subject: Biology And Life Sciences, Food Science And Technology Keywords: Allium sativum; black garlic; functional food; anticancer activity; processed food

Online: 26 March 2024 (11:33:58 CET)

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Preprint ESSAY | doi:10.20944/preprints202403.1119.v1

Black Swan Events: Mitigating Disruption to a Supply Chain Using Blockchain and Artificial Intelligence

Gordon Bowen, Hamid Jahankhani, Imad Yasir Nawaz

Subject: Computer Science And Mathematics, Computer Science Keywords: artificial intelligence; bblockchain; sustainable supply chain system; black swan events

Online: 22 March 2024 (07:40:26 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0849.v1

The Prevalence of Necrotic Black Spot in Cancer pagurus (L.) within a UK Voluntary Marine Reserve.

Kevin Scott, Petra Harsanyi

Subject: Biology And Life Sciences, Aquatic Science Keywords: Cancer pagurus; disease; fisheries; black spot; fisheries management

Online: 15 February 2024 (09:44:45 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.2051.v1

Can Black Holes or Other Relativistic Space Objects Be a Source of Dark Energy?

Serge Parnovsky

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: general relativity; cosmology; black hole; dark energy; naked singularity; gravastar

Online: 29 January 2024 (15:44:38 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0173.v2

The Blackbody CMB Temperature, Luminosity, and Their Relation to Black Hole Cosmology, Compared to Bekenstein-Hawking Luminosity

Espen Haug, Stephane Wojnow

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: CMB temperature luminosity; black hole luminosity; Hawking temperature

Online: 5 January 2024 (07:00:26 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.0417.v1

Pyrolysis of Tyres Waste in Fixed Bed Reactor

Saša Papuga, Milica Djurdjevic, Goran Tomović, Stefano Vecchio Ciprioti

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: pyrolysis; fixed bed reactor; tyres waste; pyrolysis oil; carbon black

Online: 8 October 2023 (02:18:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.0390.v1

Carbon Black Filling Amount on the Hyper-elastic Mechanical Behavior of Rubber

Zepeng Wang, Xiulong Yao, Fangru Hu, Chuanxiang Ma, Xinyan Li, Zhanli Miao, Junping Song, Lianxiang Ma, Wei Li

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: natural rubber; Yeoh constitutive model; hyper-elastic; carbon black filling

Online: 6 September 2023 (08:49:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.0796.v1

Upwellings and Downwellings Caused By Mesoscale Water Dynamics in the Coastal Zone of North-Eastern Black Sea

Oleg I. Podymov, Vladimir V. Ocherednik, Ksenia P. Silvestrova, Andrei G. Zatsepin

Subject: Environmental And Earth Sciences, Oceanography Keywords: upwelling; downwelling; Black Sea; Rim Current; permanent pycnocline; seasonal thermocline

Online: 12 July 2023 (12:03:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202206.0052.v1

A Study of McVittie Spacetime in Stationary and Dynamical Regime

Indranath Bhattacharyya, Saibal Ray, Riju Nag, Samudra Sundar Nag

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Einstein equations; McVittie solution; black hole; dark energy; embedded spacetime

Online: 6 June 2022 (03:17:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202203.0211.v1

Assessment of Factors Influencing Personal Exposure to Air Pollution on Main Roads in Bogota: A Mixed-Method Study

Jeadran Malagon-Rojas, Eliana L. Parra-Barrera, Yesith G. Toloza-Pérez, Hanna Soto, Luisa F. Lagos, Daniela Méndez, Andrea Rico, Julia E. Almentero, Mónica A Quintana-Cortés, Diana C. Pinzón-Silva, Andrés García, John Benavídez-Piracón, Diana C. Zona-Rubio, Claudia Portilla, Maria A. Wilches-Mogollón, Sol A. Romero, Luis Jorge Hernandez, Ricardo Morales, Olga L. Sarmiento

Subject: Environmental And Earth Sciences, Pollution Keywords: air pollution; microenvironment; public health; PM2.5; black carbon; active transport

Online: 15 March 2022 (11:34:12 CET)

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Preprint ARTICLE | doi:10.20944/preprints202201.0072.v1

TorchEsegeta: Framework for Interpretability and Explainability of Image-based Deep Learning Models

Soumick Chatterjee, Arnab Das, Chirag Mandal, Budhaditya Mukhopadhyay, Manish Vipinraj, Aniruddh Shukla, Rajatha Nagaraja Rao, Chompunuch Sarasaen, Oliver Speck, Andreas Nürnberger

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Deep Learning; Black-box; Interpretability; Explainability; Model introspection; MRA segmentation

Online: 6 January 2022 (10:39:37 CET)

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Working Paper ARTICLE

The Spacetime and Finite-Size Nuclear Structure of The Black Hole

Ting-Hang Pei

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: black hole; Schwarzschild radius; Kerr-Newman metric; finite-size nucleus

Online: 21 September 2021 (09:45:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202106.0258.v1

An appraisal of the Filipino Catholic Devotion to the Black Nazarene in the light of New Evangelization

Joseph Albert Reyes

Subject: Social Sciences, Anthropology Keywords: Black Nazarene; Popular Devotion; Filipino Catholics; Sacred Liturgy; New Evangelization

Online: 9 June 2021 (11:10:28 CEST)

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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 And Life Sciences, Anatomy And Physiology Keywords: nitrate-alkaline pulp; Black Mustard; Camelina; tensile index; chemical analysis

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

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Working Paper ARTICLE

Evaluation of the Dimensional Stability of Black Poplar Wood Modified Thermally in Nitrogen Atmosphere

Olga Bytner, Agnieszka Laskowska, Michał Drożdżek, Paweł Kozakiewicz, Janusz Zawadzki

Subject: Chemistry And Materials Science, Biomaterials Keywords: black poplar; dimensional stability; factor influence; nitrogen atmosphere; thermal modification

Online: 26 February 2021 (10:53:16 CET)

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Working Paper ARTICLE

Remarks on Nonsingular Models as Hayward and Magnetized Black Hole with Rational Nonlinear Electrodynamics

Sergey Il'ich Kruglov

Subject: Physical Sciences, Acoustics Keywords: Magnetically charged black holes; Hawking temperature; ; heat capacity; phase transitions

Online: 16 November 2020 (16:04:52 CET)

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Preprint ARTICLE | doi:10.20944/preprints202011.0197.v1

Conceptual Model for Cutoff Origin in Exotic Compact Objects

Wilson Alexander Rojas Castillo, Jose Robel Arenas Salazar

Subject: Physical Sciences, Acoustics Keywords: black shell; closeness parameter; cutoff; entanglement; exotic objects; compact objects

Online: 4 November 2020 (14:40:23 CET)

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Preprint ARTICLE | doi:10.20944/preprints202003.0382.v1

Weak Gravitational Lensing by Bocharova-Bronnikove-Melnikov-Bekenstein Black Holes Using Gauss-Bonnet Theorem

Wajiha Javed, Muhammad Bilal Khadim, Ali Övgün

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: weak gravitational lensing; black hole; deflection angle; Gauss-Bonnet theorem

Online: 26 March 2020 (06:39:35 CET)

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Preprint ARTICLE | doi:10.20944/preprints202001.0049.v1

Dyonic and Magnetic Black Holes with Rational Nonlinear Electrodynamics

Sergey Kruglov

Subject: Physical Sciences, Mathematical Physics Keywords: nonlinear electrodynamics; black holes; heat capacity; free energy; phase transitions

Online: 5 January 2020 (17:27:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints201704.0121.v1

Quantum Tunneling Radiation from Loop Quantum Black Holes and the Information Loss Paradox

Carlos Alex Souza Da Silva, Francisco De Assis Brito

Subject: Physical Sciences, Quantum Science And Technology Keywords: loop quantum black hole; tunneling radiation; back-reaction; information recovery

Online: 19 April 2017 (06:18:18 CEST)

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Preprint INTERESTING IMAGES | doi:10.20944/preprints202312.1363.v1

The Best Strategy for Black Hole Phenomenon between Intravascular Ultrasound and Optical Coherence Tomography

Cheng-Cheng Kan, Wei-Che Tsai, Cheng-Chung Cheng, Gwo-Ping Jong

Subject: Medicine And Pharmacology, Cardiac And Cardiovascular Systems Keywords: black hole phenomenon; in-stent restenosis; intravascular ultrasound; optical coherence tomography

Online: 19 December 2023 (05:11:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints202306.0689.v1

Chemical Differentiation and Quantitative Analysis of Black Ginseng Based on a LC-MS Combined with Multivariate Statistical Analysis Approach

Lele Li, Zhixia Chang, Keyu Wei, Yi Tang, Zhao Chen, Hongli Zhang, Yang Wang, Bo Feng, Heyun Zhu

Subject: Medicine And Pharmacology, Medicine And Pharmacology Keywords: Black ginseng; Ginsenosides; UPLC-Q-TOF/MS; processing; multivariate statistical analysis

Online: 9 June 2023 (08:43:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202212.0414.v1

Influence of Hermetia Illucens Larvae Meal Dietary Inclusion on Growth Performance, Gut Histological Traits and Stress Parameters in Sparus Aurata

Ambra Rita Di Rosa, Letteria Caccamo, Lidia Pansera, Marianna Oteri, Biagina Chiofalo, Giulia Maricchiolo

Subject: Medicine And Pharmacology, Veterinary Medicine Keywords: black soldier fly; fishmeal substitution; gut histology; animal performance; gilthead seabream

Online: 22 December 2022 (03:30:39 CET)

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Preprint ARTICLE | doi:10.20944/preprints202207.0343.v1

Trajectory of Massive Particles around a Static Black Hole in f(R) Gravity

Surajit Mandal

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Massive particle; Static black hole; f(R) gravity; Pseudo-Newtonian Potential

Online: 22 July 2022 (14:14:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202207.0194.v1

AdS Black Holes in the Framework of Nonlinear Electrodynamics, Thermodynamics and Joule–Thomson Expansion

Sergey I. Kruglov

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: black holes; thermodynamics; extended phase space; nonlinear electrodynamics; Joule--Thomson expansion

Online: 13 July 2022 (09:06:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202108.0390.v1

Connection between Sinc Approximation for High-Energy Absorption Cross Section and Shadow of Black Holes

Ali Övgün

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: Gravitation; Black hole; Shadow; High-energy physics; Cross-section; Null geodesics

Online: 18 August 2021 (14:31:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202001.0074.v3

Effect of Horndeski Theory on Weak Deflection Angle Using the Gauss-Bonnet Theorem

Ali Övgün, Yashmitha Kumaran, Wajiha Javed, Jameela Abbas

Subject: Physical Sciences, Acoustics Keywords: Weak gravitational lensing; Horndeski black hole; Deflection angle; Gauss-Bonnet theorem

Online: 29 July 2021 (12:37:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202107.0054.v3

General Canonical Quantum Gravity Theory and that of the Universe and General Black Hole

C. Huang, Yong-Chang Huang, Xinfei Li

Subject: Physical Sciences, Particle And Field Physics Keywords: general relativity; Lagrangian; operators; quantum gravity; canonical quantization; commutation relation; general black hole

Online: 18 November 2021 (13:45:15 CET)

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Preprint ARTICLE | doi:10.20944/preprints202107.0019.v1

Spherically Symmetric Exact Vacuum Solutions in Einstein-Aether Theory

Jacob Oost, Shinji Mukohyama, Anzhong Wang

Subject: Physical Sciences, Acoustics Keywords: Einstein-aether theory; Lorentz violation; spherical spacetimes; exact solutions; black holes

Online: 1 July 2021 (11:23:17 CEST)

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Preprint HYPOTHESIS | doi:10.20944/preprints202009.0233.v1

Gravitational Waves Carry Information about the Infalling Matter out of Black Holes: a Resolution of the Black Hole Information Paradox

Xueyi Tian

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: black holes; information paradox; Hawking radiation; information loss; gravitational waves; entropy

Online: 10 September 2020 (10:04:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202008.0335.v1

Emission Inventory Processing of Biomass Burning from A Global Dataset for Air Quality Modeling

Ernesto Pino-Cortés, Samuel Carrasco, Luis A. Díaz-Robles, Francisco Cubillos, Fidel Vallejo, Francisco Cereceda-Balic, Joshua Fu

Subject: Environmental And Earth Sciences, Environmental Science Keywords: Biomass burning; SMOKE; NCO; GFASv1.3; Black carbon; Organic carbon; Southern Hemisphere

Online: 15 August 2020 (04:19:14 CEST)

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Working Paper ARTICLE

Two Exact Solutions Illustrating the Schwarzschild Singularity's Resolution

Dingfang Zeng

Subject: Physical Sciences, Theoretical Physics Keywords: Schwarzschild Singularity; Exact solutions to Einstein Equation; Microstate of Black Holes

Online: 19 July 2020 (18:45:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202002.0163.v1

The Observation Path Problems and the Formation Conditions of the Elevated Layer of Black Carbon Aerosol

Lianji Jin, Liang Lin, Deping Ding, Delong Zhao, Bin Zhu, Qingfei Zhai, Zheng Liu

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: black carbon aerosol; aerosol layer; vertical distribution; numerical simulation; WRF-Chem

Online: 13 February 2020 (10:13:31 CET)

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Studies on the detection of layers with elevated black carbon aerosol (BC) concentrations and the formation conditions of these layers help understand the vertical distribution of BC concentrations, which will provide a basis for the assessment of climate effects and early BC pollution warnings. By using the Weather Research and Forecasting with Chemistry (WRF-Chem) numerical model, we performed a numerical simulation analysis on the authenticity of strong elevated BC concentration layers that were detected by an aircraft in the mixing layer over Harbin, China, which is a high-emission area, on a clear sunny afternoon in the early heating period of 2016. We then discuss possible problems and solutions when non-vertical paths are used to detect the vertical distribution of BC concentrations. Finally, we discuss the favorable conditions for the formation of elevated BC concentration layers by weak vertical flow. The results show that the horizontal variability of BC concentration in the mixing layer in the observation area in Harbin was sufficiently large during the measurement. This produced a false elevated layer, as detected by the aircraft during one round of spiral flight in the mixing layer. The root mean square of the horizontal distribution of BC concentration did not change with height in the mixing layer during the daytime, but it decreased with the thickness of the mixing layer and was higher in the mixing layer than in the free atmosphere. Therefore, the thinner the mixing layer, in which the vertical distribution of the BC concentration is detected in an inclined path, the stronger interference of the horizontal variability on the detected results. When a spiral flight detection path is used, the aircraft should fly at least two rounds in the mixing layer. In the daytime, due to strong turbulence in the mixing layer, weak vertical uplift is not favorable for the occurrence of elevated BC concentration layers in the mixing layer. In the nighttime, if weak vertical uplift is well matched with the BC concentration or its vertical gradient, elevated BC concentration layers can be formed in the atmosphere. Compared with upper layers far from the ground, nighttime elevated layers are easier to form in lower layers near the ground because high BC concentrations or large vertical gradients are more likely to occur in the lower layers. Both cases facilitate the occurrence of large vertical upward transport rates of BC.

Preprint ARTICLE | doi:10.20944/preprints201810.0413.v3

The Quantum Black Hole as a Gravitational Hydrogen Atom

Christian Corda, Fabiano Feleppa

Subject: Physical Sciences, Mathematical Physics Keywords: gravitational atom; quantum black hole; quantum levels; Schrodinger equation; mass spectrum

Online: 6 December 2019 (04:14:35 CET)

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Preprint ARTICLE | doi:10.20944/preprints201912.0045.v1

Weak Gravitational Lensing by Stringy Black Holes

Wajiha Javed, Muhammad Bilal Khadim, Jameela Abbas, Ali Övgün

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: Weak gravitational lensing; Stringy black hole; Deflection angle; Gauss-Bonnet theorem

Online: 4 December 2019 (10:12:06 CET)

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Working Paper ARTICLE

Cosmic Random Walks Underlying an Infinite-Genus Universe

Arturo Tozzi, Alexander Yurkin, James F. Peters

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: arithmetic figures, black hole, deterministic model, geometrization of physics, random walk

Online: 26 March 2019 (10:23:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0118.v1

Brother's Keeper or Only Child? Black Middle Class Responses to Residential Mobility Initiatives in Prince George's County, MD

Carley Shinault

Subject: Social Sciences, Sociology Keywords: Gentrification; Residential Migration; Black Middle Class; Washington, DC; PG County, MD

Online: 5 November 2018 (14:06:31 CET)

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Preprint ARTICLE | doi:10.20944/preprints202109.0467.v2

Unified Explanation of Big Bang, Inflation, Charged Black Hole Decay, Galaxy Formation, Proton Spin Crisis and Elementary Particle Masses

Jae-Kwang Hwang

Subject: Physical Sciences, Particle And Field Physics Keywords: Elementary particles; Galaxy structures; Charged black hole decay; Big bang and inflation; Super-massive black holes; Coulomb forces; Proton spin crisis; Dark matters; 4-D Euclidean space.

Online: 11 October 2021 (11:46:24 CEST)

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Space-time evolution is briefly explained by using the 3-dimensional quantized space model (TQSM) based on the 4-dimensional (4-D) Euclidean space. The energy (E=cDtDV), charges (|q|= cDt) and absolute time (ct) are newly defined based on the 4-D Euclidean space. The big bang is understood by the space-time evolution of the 4-D Euclidean space but not by the sudden 4-D Minkowski space-time creation. The big bang process created the matter universe with the positive energy and the partner anti-matter universe with the negative energy from the CPT symmetry. Our universe is the matter universe with the negative charges of electric charge (EC), lepton charge (LC) and color charge (CC). This first universe is made of three dark matter -, lepton -, and quark - primary black holes with the huge negative charges which cause the Coulomb repulsive forces much bigger than the gravitational forces. The huge Coulomb forces induce the inflation of the primary black holes, that decay to the super-massive black holes. The dark matter super-massive black holes surrounded by the normal matters and dark matters make the galaxies and galaxy clusters. The spiral arms of galaxies are closely related to the decay of the 3-D charged normal matter black holes to the 1-D charged normal matter black holes. The elementary leptons and quarks are created by the decay of the normal matter charged black holes, that is caused by the Coulomb forces much stronger than the gravitational forces. The Coulomb forces are very weak with the very small Coulomb constants (k₁(EC) = k_dd(EC) ) for the dark matters and very strong with the very big Coulomb constants (k₂(EC) = k_nn(EC)) for the normal matters because of the non-communication of the photons between the dark matters and normal matters. The photons are charge dependent and mass independent. But the dark matters and normal matters have the similar and very weak gravitational forces because of the communication of the gravitons between the dark matters and normal matters. The gravitons are charge independent and mass dependent. Note that the three kinds of charges (EC, LC and CC) and one kind of mass (m) exist in our matter universe. The dark matters, leptons and quarks have the charge configurations of (EC), (EC,LC) and (EC,LC,CC), respectively. Partial masses of elementary fermions are calculated, and the proton spin crisis is explained. The charged black holes are not the singularities.

Preprint ARTICLE | doi:10.20944/preprints202403.0961.v1

From Clastics to Carbonates and Black Shales: Deciphering Sedimentary Continuity and Discontinuity in the Devonian Landscape of the Volga-Ural Petroleum Province

Vladimir V. Silantiev, Dinara N. Miftakhutdinova, Nouria G. Nurgalieva

Subject: Environmental And Earth Sciences, Geophysics And Geology Keywords: Volga-Ural Petroleum Province, Devonian, black shales, carbonates, clastic, sedimentation, rate, environments

Online: 18 March 2024 (09:00:44 CET)

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Analyses of the three predominant types of sedimentation – clastic, carbonate and black shale – revealed their discontinuity/continuity in different facies environments of the Middle and Late Devonian of the central part of the Volga-Urals petroleum province, namely (1) in depressions, both condensed and non-condensed, (2) on the slopes of depressions and (3) in shallow water environments represented by tectonic arches or localised biohermal uplifts. The regional zonation of conodonts, correlated with the global chronostratigraphic scheme, substantiates the stratigraphic completeness of the general Devonian sequence in this area. In particular, the sedimentation of organic-rich black shales, traditionally considered as source rocks, lasted more than 29 million years, starting from the Late Eifel and ending at the Devonian-Carboniferous boundary. There was only one hiatus in the deposition of both black shales and carbonate sediments, lasting about 2.5 million years at the end of the Frasnian. That interval is dominated by clastic sediments, which are considered to be the most productive reservoirs of the Volga-Ural province. In the time interval from the beginning of the Eifel to the end of the Frasnian (about 17 Ma), (a) clastic sediments show the highest accumulation rates; (b) the most complete sequences occur in depressions; and (c) arches and uplifts show the most significant gaps in the geological record. During Famennian, (a) clastic sedimentation has completely ceased; (b) differences between the slopes of troughs and shallow-water environments have diminished, resulting in stable accumulation of carbonate sediments in both settings; (c) the decrease in sequence thickness (up to 50 m) in depressions suggests reduced accumulation rates of deep-water organic-rich black shales. The results help to understand the complex spatial relationship between different coexisting sedimentation types and focus attention to the incompleteness of the geological record in different environments.

Preprint ARTICLE | doi:10.20944/preprints202401.0018.v1

Feasibility Study on a Black Paper Base Film Coated with Cooked Tung Oil

Yi Wu, Yi-Cheng Shi, Yu-die Zhao, Yin Yu

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: black mulch film; degradable paper mulch film; hydrophobicity; heat transfer; anti-aging

Online: 3 January 2024 (03:28:17 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.0476.v1

A Disposable Carbon-Based Electrochemical Cell Modified With Carbon Black and Ag/δ-FeOOH for Non-enzymatic H2O2 Electro-Chemical Sensing

Wiviane Reis, Karoline Nantes, Ana Ferreira, Márcio Pereira, Luiz Mattoso, Ronaldo Faria, Andre Afonso

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: non-enzymatic sensor; Ag/δ-FeOOH; carbon black; hydrogen peroxide; electrochemical detection

Online: 10 October 2023 (03:13:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1066.v1

Preliminary Results on Health Issues Incidence Evaluation in a Research Farm with Romanian Black Spotted Dairy Calves Breed

Elena Raducanu, Daniela-Mihaela Grigore, Dinu Gavojdian, Gheorghe Emil Mărginean, Livia Vidu

Subject: Biology And Life Sciences, Animal Science, Veterinary Science And Zoology Keywords: dairy calves; animal welfare; cattle health; Romanian Black Spotted breed; farm health

Online: 15 September 2023 (10:52:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202302.0427.v1

On the Thermodynamics of Matter

Naman Kumar

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Alternative Gravity, Thermodynamics of Black Holes. Quantum Focusing Conjecture, Thermodynamics and Gravity

Online: 24 February 2023 (15:41:02 CET)

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Preprint ARTICLE | doi:10.20944/preprints202209.0112.v1

A Generalized Model for Pricing Financial Derivatives Consistent with Efficient Markets Hypothesis – A Refinement of the Black-Scholes Model

Jussi Lindgren

Subject: Business, Economics And Management, Finance Keywords: options pricing; financial derivatives; efficient market hypothesis; martingale; Feynman-Kac; Black-Scholes

Online: 7 September 2022 (12:18:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202208.0253.v1

Theoretical Search for Gravitational Bound States of Tachyons

Charles Schwartz

Subject: Physical Sciences, Space Science Keywords: General Relativity; Schwarzschild metric; circular flows; tachyons; neutrinos; Dark Matter; black holes

Online: 15 August 2022 (08:26:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202003.0051.v2

Weak Deflection Angle and Shadow by Tidal Charged Black Hole

Wajiha Javed, Ali Hamza, Ali Övgün

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: Relativity; Gravitation; Black hole; Tidal Charge; Gauss-bonnet theorem; plasma medium; Shadow

Online: 19 October 2021 (10:13:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202109.0528.v1

Short-Term Cumulative Exposure to Ambient Traffic-Related Black Carbon and Blood Pressure: MMDA Traffic Enforcers’ Health Study

Zypher Jude G. Regencia, Godofreda V. Dalmacion, Antonio D. Ligsay, Emmanuel S. Baja

Subject: Public Health And Healthcare, Public, Environmental And Occupational Health Keywords: black carbon; systolic blood pressure; diastolic blood pressure; sex; obesity; traffic enforcers

Online: 30 September 2021 (16:08:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202012.0313.v2

Controlling Safety of Artificial Intelligence-Based Systems in Healthcare

Mohammad Reza Davahli, Waldemar Karwowski, Krzysztof Fiok, Thomas T.H. Wan, Hamid R Parsaei

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: artificial intelligence; human-AI interaction; human factors; safety challenges; black-box challenge

Online: 8 January 2021 (13:50:32 CET)

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Preprint ARTICLE | doi:10.20944/preprints201911.0096.v1

Black Hole Entropy from Non-Commutative Geometry and Spontaneous Localisation

Tejinder P. Singh, Palemkota Maithresh

Subject: Physical Sciences, Quantum Science And Technology Keywords: black hole entropy; quantum gravity; non-commutative geometry; spontaneous localisation; trace dynamics

Online: 8 November 2019 (10:54:34 CET)

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Working Paper ARTICLE

Massive Photons Propagation in Gravitational Field

Arbab Arbab

Subject: Physical Sciences, Thermodynamics Keywords: black holes thermodynamics; entropic force; electromagnetic-gravity analogy; General Relativity; massive electrodynamics

Online: 12 October 2019 (04:16:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201907.0172.v1

Tunneling of Massive Vector Particles under the Influence of Quantum Gravity

Wajiha Javed, Riasat Ali, Rimsha Babar, Ali Övgün

Subject: Physical Sciences, Quantum Science And Technology Keywords: massive boson particles; wave equation; quantum gravity; Hawking radiation; black hole thermodynamics

Online: 14 July 2019 (17:12:54 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201906.0100.v1

On the Cosmological Origin of the Rest Mass of Elementary Particles: The Ideas of Maximons and Minimons Revisited

Vikraman Vipindas, Trivandrum Easwaraiyer Girish, Chellappan Radhakrishnan Nair

Subject: Physical Sciences, Nuclear And High Energy Physics Keywords: elementary particles; cosmological origin; maximon; Hawking radiation; neutrino mass; primordial black holes

Online: 12 June 2019 (03:45:41 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201812.0354.v1

Biofuel Produced from Solid-State Anaerobic Digestion of Dairy Cattle Manure in Coordination with Black Soldier Fly Larvae Decomposition

Choon Yong Wee, Jung-Jeng Su

Subject: Biology And Life Sciences, Animal Science, Veterinary Science And Zoology Keywords: biogas; black soldier fly; dairy cattle manure; digestate; solid-state anaerobic digestion

Online: 29 December 2018 (05:20:37 CET)

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Preprint ARTICLE | doi:10.20944/preprints201806.0482.v1

Nested Stochastic Valuation of Large Variable Annuity Portfolios: Monte Carlo Simulation and Synthetic Datasets

Guojun Gan, Emiliano Valdez

Subject: Computer Science And Mathematics, Probability And Statistics Keywords: Monte Carlo; regime-switching multivariate black-scholes; metamodeling; variable annuity; portfolio valuation

Online: 29 June 2018 (11:31:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201607.0051.v1

Search for QPOs in the Light Curve of the Blazar OJ287: Preliminary Results from 2015/16 Observing Campaign

S. Zola, M. Valtonen, G. Bhatta, A. Goyal, B. Debski, A. Baran, J. Krzesinski, M. Siwak, S. Ciprini, A. Gopakumar, H. Jermak, K. Nilsson, D. Reichart, K. Matsumoto, K. Sadakane, K. Gazeas, M. Kidger, V. Piirola, F. Alicavus, K.S. Baliyan, A. Berdyugin, D. Boyd, M. Campas Torrent, F. Campos, J. Carrillo Gomez, D.B. Caton, V. Chavushyan, J. Dalessio, D. Dimitrov, M. Drozdz, A. Erdem, A. Escartin Perez, V. Fallah Ramazani, A.V. Filippenko, F. Garcia, F. Gomez Pinilla, M. Gopinathan, J.B. Haislip, J. Harmanen, G. Hurst, K.M. Ivarsen, M. Jelinek, A. Joshi, M. Kagitani, N. Kaur, N. Karaman, W.C. Keel, A.P. LaCluyze, B.C. Lee, E. Lindfors, J. Lozano De Haro, J.P. Moore, R. Naves Nogues, A.W. Neely, R.H. Nelson, W. Ogloza, S. Okano, J.C. Pandey, M. Perri, P. Pihajoki, G. Poyner, J. Provencal, T. Pursimo, A. Raj, R. Reinthal, S. Sadegi, T. Sakanoi, J.-L. Salto Gonzales, T. Schweyer, F.C. Soldan Alfaro, E. Sonbas, I. Steele, J.T. Stocke, J. Strobl, L.O. Takalo, T. Tomov, L. Tremosa Espasa, J.R. Valdes, J. Valero Perez, F. Verrecchia, J.R. Webb, M. Yoneda, M. Zejmo, W. Zheng, J. Telting, J. Saario, T. Reynolds, A. Kvammen, E. Gafton, R. Karjalainen, P. Blay

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: galaxies: active; BL Lacertae objects: individual (OJ 287); super massive black holes

Online: 18 July 2016 (10:46:26 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202208.0409.v1

Absence of Electric Field outside a Static Charged Black Hole - Something Awry in Reissner-Nordström Metric

Ashok Singal

Subject: Physical Sciences, Space Science Keywords: Black Hole has no hair; Electromagnetic field of a charged black hole, Electromagnetic field of a supported charge in gravitational field; electric fields follow photo trajectories in gravitational field

Online: 24 August 2022 (04:49:54 CEST)

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Using the principle of equivalence, it has recently been shown that the electrostatic field lines of a charge, stationary in the gravitational field, bend exactly like the trajectories of photons emitted isotropically from a source at the charge location and that the fraction of electric flux crossing a surface `below' or `above' the charge is exactly similar to the fraction of photon trajectories intersecting these surfaces, with more flux in the downward direction than upward. As one goes much deeper in the gravitational field, all electric field lines increasingly point in the vertically downward direction as is also the case for a stream of photons. Since photon trajectories as well as electric field lines, at any location in the gravitational field, are affected by the local space-time curvature an inference can be drawn that this parallel between the photon trajectories and the electric field lines is a general result. We could then apply these results in the external gravitational field of a black hole, where the trajectories of photons in the gravitational field are already well-known and the behaviour of electric field lines of a stationary charge could be inferred therefrom. Accordingly, we show that the electric field through an external spherical surface surrounding the black hole steadily reduces as the charge location approaches the event horizon (Schwarzschild radius), and like photons from a source inside the Schwarzschild radius cannot escape outside, the electric field lines of a charge within the black hole too remain trapped inside the event horizon. From this one arrives at a conclusion that, contrary to the conventional wisdom, the electric charge contained inside a static black hole cannot be detected or inferred by an external observer. A black hole, said to have no hair with the only external identifying characteristics being mass, electric charge, and angular momentum, is therefore all the more `hairless', as even its charge cannot be ascertained. The derivation of the Reissner-Nordström metric, supposedly describing the gravitational field of a static charged black hole, presumes an external stress-energy tensor of the electrostatic field, as per Gauss law, even for the charges contained within the black hole. However, the absence of electric flux external to a static charged black hole implies that such a charged black hole is not described correctly by the Reissner-Nordström metric and the consequential peculiarities of the space-time geometry, leading in specific cases to the idea of a naked intrinsic singularity and a need for the ``cosmic censorship'' hypothesis, also do not arise here.

Preprint ARTICLE | doi:10.20944/preprints202403.0505.v1

In-Situ Improvement of Sediment Microenvironment by Nitrate in Tailwater of Wastewater Treatment Plants Combined with Aerobic Denitrifying Bacteria under Low-Do Regulation

Junyi Chen, Chao Zhang, Yun Liu, Jie Tian, Jianbo Guo

Subject: Environmental And Earth Sciences, Pollution Keywords: Black and odorous water bodies, Microenvironment, Sulfur autotrophic denitrification, Electroactive Bacteria, Functional gene

Online: 8 March 2024 (09:25:20 CET)

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Preprint CASE REPORT | doi:10.20944/preprints202401.1288.v1

Light and Brain: A Clinical Case Depicting the Effects of Light on Brainwaves and Possible Presence of Plasma-Like Brain Energy.

Zamzuri Idris, Zaitun Zakaria, Ang Song Yee, Diana Noma Fitzrol, Muhammad Ihfaz Ismail, Abdul Rahman Izaini Ghani, Jafri Malin Abdullah, Mohd Hasyizan Hassan, Nursakinah Suardi

Subject: Biology And Life Sciences, Neuroscience And Neurology Keywords: light, photobiomodulation; brainwaves; thermodynamics; quantum brain; plasma; black body; awake brain surgery; electrocorticography

Online: 17 January 2024 (08:38:17 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.1535.v2

Energy -Momentum Localization in Quantum Gravity

Stuart Marongwe

Subject: Physical Sciences, Theoretical Physics Keywords: Quantum Gravity; Energy-Momentum Localization; Dark Energy; Dark Matter; Gravitational Waves; Black Holes

Online: 28 November 2023 (10:26:48 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0840.v1

Salicylic and Jasmonic Acid Synergism During Black Knot Disease Progression in Plums

Ranjeet Shinde, Murali-Mohan Ayyanath, Mukund Shukla, Walid El Kayal, Praveen Kumar Saxena, Jayasankar Subramanian

Subject: Biology And Life Sciences, Horticulture Keywords: Apiosporina morbosa; black knot; phytohormones; plant growth regulators; plant immunity; plant-pathogen interactions

Online: 14 November 2023 (17:02:51 CET)

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Preprint ARTICLE | doi:10.20944/preprints202308.0629.v1

On CPT Universes in Background of a Black Hole Binary System

Aroonkumar Beesham

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: CPT universe; big bang; Binary black hole; Mirror image and space-time; Brane

Online: 8 August 2023 (07:12:39 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0201.v2

Spiral Arm Formation of Galaxies Through ROTASE Mechanism Is Perfectly Demonstrated by Falling Rockets Venting Fuel

Hongjun Pan

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Spiral arms; Spiral galaxies; X-matter; Black holes; Galaxy evolution; Spirals by rockets

Online: 30 June 2023 (11:38:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.1793.v1

Unleashing Black Sea Cucumber's Potential: Identifying Anti-Cancer Compounds Through In Silico Drug Discovery

Muhammad Fahrury Romdendine, Wisnu Ananta Kusuma, Annisa Annisa, Mala Nurilmala, Rizka Fitriani

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: bioactive compounds; black sea cucumbers; cancer; drug-target interactions; machine learning; molecular docking

Online: 26 June 2023 (10:36:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202202.0245.v2

Effects of Electric and Magnetic Charges on Weak Deflection Angle and Bounding Greybody of Black Holes in Nonlinear Electrodynamics

Wajiha Javed, Mehak Atique, Ali Övgün

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: gravitational lensing; black holes; Gauss-Bonnet theorem; plasma medium; greybody factor; nonlinear electrodynamics

Online: 5 July 2022 (08:48:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202111.0231.v1

Effect of the Magnetic Charge on Weak Deflection Angle and Greybody Bound of the Black Hole in Einstein-Gauss-Bonnet Gravity

Wajiha Javed, Muhammad Aqib, Ali Övgün

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: Relativity; Gravitation Lensing; Black hole; Gauss-Bonnet Theorem; Deflection angle; Plasma medium; Greybody

Online: 12 November 2021 (15:09:25 CET)

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Preprint ARTICLE | doi:10.20944/preprints202101.0515.v1

The Entropy of Supermassive Black Holes during its Evaporation Time

R. Leticia Corral-Bustamante

Subject: Physical Sciences, Acoustics Keywords: Entropy; Black hole physics; Radiation mechanism: thermal; Relativity; Methods: analytical; Astronomical databases: miscellaneous

Online: 25 January 2021 (15:32:41 CET)

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Preprint ARTICLE | doi:10.20944/preprints202012.0426.v1

Formulation Of A Rational Option Pricing Model using Artificial Neural Networks

Kaustubh yadav, Anubhuti yadav

Subject: Computer Science And Mathematics, Computer Science Keywords: Black Scholes Equation; Heston Model Calibration; Option Pricing; Stochastic Processes; Artificial Neural Networks

Online: 17 December 2020 (16:22:34 CET)

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Preprint ARTICLE | doi:10.20944/preprints202012.0049.v1

4D Einstein-Gauss-Bonnet Gravity Coupled with Nonlinear Electrodynamics

Sergey Kruglov

Subject: Physical Sciences, Acoustics Keywords: Einstein-Gauss-Bonnet gravity; nonlinear electrodynamics; Hawking temperature; heat capacity; black hole shadow

Online: 2 December 2020 (08:05:42 CET)

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Preprint ARTICLE | doi:10.20944/preprints202009.0669.v1

Quasinormal Modes of Extended Gravity Black Holes

Abdul Jawad, Shahid Chaudhary, Muhammad Yasir, Ali Övgün, İzzet Sakallı

Subject: Physical Sciences, Acoustics Keywords: relativity and gravitation; Black Holes; Quasinormal modes; Modified Gravity; Einstein-Gauss-Bonnet Gravity

Online: 27 September 2020 (08:10:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202008.0604.v1

Impact of the Aerobic Mesophilic Microorganisms on Black Sigatoka of Bananas According to the Cropping Systems in the Region of Kisangani (Case of the Old Secondary Forest)

Gabriel Akwakwa Hopla, Chunyu Sun, Didy Onautshu, Yang Sun

Subject: Biology And Life Sciences, Immunology And Microbiology Keywords: aerobic mesophilic; black sigatoka; cropping systems; libanga likale; Yangambi 5Km; Litete; gros michel

Online: 27 August 2020 (08:55:23 CEST)

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Preprint ARTICLE | doi:10.3390/sci2010010

Data Fusion of Scanned Black and White Aerial Photographs with Multispectral Satellite Images

Dimitris Kaimaris, Petros Patias, Giorgos Mallinis, Charalampos Georgiadis

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: black and white aerial photographs; multispectral satellite images; data fusion; correlation tables; classification

Online: 13 March 2020 (00:00:00 CET)

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Preprint ARTICLE | doi:10.20944/preprints201909.0287.v1

A ‘Giant Microfossil’ from the Gunflint Chert and its Implications for Fungal and Eukaryote Origins

Mark A. S. McMenamin, Aurora Curtis-Hill, Sophie Rabinow, Kalyndi Martin, Destiny Treloar

Subject: Environmental And Earth Sciences, Paleontology Keywords: Gunflint Chert; stromatolites; black chert; origin of eukaryotes; evolution of fungi; Precambrian microfossils

Online: 26 September 2019 (00:48:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201908.0156.v1

Effect of Aether Field on Weak Deflection Angle of Black Holes

Ali Övgün, İzzet Sakallı, Joel Saavedra

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: deflection of light; Gauss-Bonnet theorem; gravitational lensing; black hole; null aether theory

Online: 13 August 2019 (10:29:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201906.0101.v1

Effect of the Hair on Deflection Angle by Asymptotically Flat Black Holes in Einstein-Maxwell-Dilaton Theory

Wajiha Javed, Jameela Abbas, Ali Övgün

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: elativity and gravitation; classical black hole; deflection angle; Gauss-Bonnet; non-linear electrodynamics

Online: 12 June 2019 (04:10:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201905.0323.v1

Evaluation of the Impact of Black Carbon on the Worsening of Allergic Respiratory Diseases in the Region of Western Serbia: A Time-Stratified Case-Crossover Study

Vesna Tomić Spirić, Gordana Kovačević, Jelena Marinković, Janko Janković, Anđa Ćirković, Ana Miošević Đerić, Nenad Relić, Slavenka Janković

Subject: Medicine And Pharmacology, Immunology And Allergy Keywords: black carbon; emergency department visits; allergic rhinitis; allergic asthma; case-crossover design; Serbia

Online: 28 May 2019 (09:50:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201905.0169.v1

Physico-Chemical Characterization and Biological Activities of Black and White Garlic: In Vivo and In Vitro Assays

Mª Ángeles Toledano Medina, Tania Merinas-Amo, Zahira Fernández-Bedmar, Rafael Font, Mercedes del Río-Celestino, Jesús Pérez-Aparicio, Alicia Moreno-Ortega, Ángeles Alonso-Moraga, Rafael Moreno-Rojas

Subject: Biology And Life Sciences, Horticulture Keywords: black garlic; Drosophila melanogaster; physico-chemical profile; polyphenol content; HL-60 cell line

Online: 14 May 2019 (12:06:54 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201903.0260.v1

Deflection Angle of Photon from Magnetized Black Hole and Effect of Nonlinear Electrodynamics

Wajiha Javed, jameela Abbas, Ali Övgün

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: relativity and gravitation; classical black hole; deflection angle; Gauss-Bonnet; non-linear electrodynamics

Online: 28 March 2019 (09:38:57 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0972.v1

Thermodynamical Metrics in General Relativity Theory

Espen Haug

Subject: Physical Sciences, Theoretical Physics Keywords: Thermodynamics, metrics, General relativity, Hawking temperature, CMB temperature, Planck scale, black holes.

Online: 18 March 2024 (10:34:13 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0478.v2

Magnetic Black Hole Thermodynamics in an Extended Phase Space with Nonlinear Electrodynamics

S. I. Kruglov

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Einstein's gravity; black holes; thermodynamics; Smarr relation; Gibbs free energy; Anti-de Sitter spacetime

Online: 12 March 2024 (08:10:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1547.v1

Electrical Conductivity, EMI Absorption Shielding Performance, Curing Process and Mechanical Properties of Rubber Composites

Ján Kruželák, Andrea Kvasničáková, Michaela Džuganová, Rastislav Dosoudil, Ivan Hudec, Henrich Krump

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: rubber; manganese-zinc ferrite; nickel-zinc ferrite; carbon black; carbon fibers; electromagnetic absorption shielding

Online: 22 January 2024 (04:29:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints202309.0108.v1

Perspectives for Effective Long-Term Management of Carbon Stocks on Сhernozem under Future Climate

Ilshat Husniev, Vladimir Romanenkov, Stanislav Siptits, Vera Pavlova, Sergey Pasko, Olga Yakimenko, Pavel Krasilnikov

Subject: Environmental And Earth Sciences, Soil Science Keywords: soil organic matter; greenhouse gases; climatic change scenarios; adaptation; long-term experiment; black fallow

Online: 4 September 2023 (15:45:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1671.v1

Designing Biomimetic Conductive Gelatin-Chitosan–Carbon Black Nanocomposite Hydrogels for Tissue Engineering

Kamol Dey, Emanuel Sandrini, Anna Gobetti, Giorgio Ramorino, Luciana Sartore

Subject: Chemistry And Materials Science, Biomaterials Keywords: hydrogel; gelatin; chitosan; conductive carbon black; nanocomposite; cyclic compression; dissipation energy; anisotropy; tissue engineering

Online: 23 August 2023 (11:53:29 CEST)

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Conductive nanocomposites play a significant role in tissue engineering by providing a platform to support cell growth, tissue regeneration, and electrical stimulation. In this present study, a set of electroconductive nanocomposite hydrogels based on gelatin (G), chitosan (CH) and conductive carbon black (CB) was synthesized with the aim to develop novel biomaterials for tissue regeneration application. Incorporation of conductive carbon black (10, 15 and 20 wt %) significantly improved electrical conductivity and enhanced mechanical properties with the increased CB content. We employed an oversimplified unidirectional freezing technique to impart anisotropic morphology with interconnected porous architecture. An investigation into whether any anisotropic morphology affects the mechanical properties of hydrogel was conducted by performing compression and cyclic compression tests in each direction parallel and perpendicular to macroporous channels. Interestingly, nanocomposite with 10 % CB produced both anisotropic morphology and mechanical property, whereas anisotropic pore morphology diminished at higher CB concentration (15 and 20 %) imparting denser texture. Collectively, the nanocomposite hydrogels showed great structural stability as well as good mechanical stability and reversibility. Under repeated compressive cyclic at 50 % deformation, the nanocomposite hydrogels showed preconditioning, characteristic hysteresis, nonlinear elasticity, and toughness. Overall, the collective mechanical behavior resembled the mechanics of soft tissues. Electrical impedance associated to the hydrogels was studied in terms of modulus and phase in dry and wet condition. The electrical properties conducted in wet conditions, which is more physiologically relevant, showed low impedance at high frequencies due to capacitive currents. Overall, impedance of the nanocomposite hydrogels decreased with increased CB concentrations. These gelatin-chitosan–carbon black nanocomposite hydrogels show great promise for use as conducting substrates for the growth of electro-responsive cells in tissue engineering.

Preprint ARTICLE | doi:10.20944/preprints202307.0146.v1

Syntaxonomy of charophyte algal communities in the eastern part of the Black Sea and Sea of Azov (Russia)

Dmitry F. Afanasyev, Natalia S. Berezenko, Sophia Barinova, Shamil R. Abdullin

Subject: Biology And Life Sciences, Life Sciences Keywords: charophytes, phytocenosis, prodromus, Brown-Blanquet approach, indirect ordination analysis, Sea of Azov, Black Sea

Online: 4 July 2023 (10:06:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0636.v1

Properties of Spherically Symmetric Black Hole in the Framework of GBD Modified Gravitational Theory

Mou Xu, Jianbo Lu, Shining Yang, Hongnan Jiang

Subject: Physical Sciences, Theoretical Physics Keywords: generalized Brans-Dicke theory; corrected entropy of black hole; geodesics stability; modified gravity theory

Online: 20 April 2023 (09:25:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202208.0354.v1

Weak Lensing, Hawking Radiation and Greybody Factor Bound by a Charged Black Holes with Nonlinear Electrodynamics Corrections

Wajiha Javed, Mehak Atique, Reggie Pantig, Ali Övgün

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: general relativity; Gauss-Bonnet theorem; plasma medium; black hole; greybody; Hawking temperature; shadow cast

Online: 19 August 2022 (03:31:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202205.0214.v1

An Unhedgeable Black-Scholes-Merton Implicit Option?

Alfredo Pereira, Sean Tarter

Subject: Business, Economics And Management, Finance Keywords: Black-Scholes-Merton; hedging; market network; option valuation; portfolio optimization; risk-bearing portfolio managers

Online: 17 May 2022 (03:05:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202202.0266.v1

Weak Deflection Angle and Greybody Bound of Magnetized Regular Black Hole

Wajiha Javed, Sibgha Riaz, Ali Övgün

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: general relativity; gravitational lensing; magnetized black holes; gauss-bonnet theorem; plasma medium; greybody factor

Online: 22 February 2022 (09:56:17 CET)

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Preprint ARTICLE | doi:10.20944/preprints202108.0086.v1

Estimating the Recreational Value of the Abdanan Black Twin Lake: A Contingent Valuation Approach

Ali Sayehmiri, Atefeh heidarvand

Subject: Business, Economics And Management, Economics Keywords: contigent valuvation; Black Twin Lake of Abdanan; Recreational Value; Willingness to Pay; Logit Model

Online: 3 August 2021 (14:47:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202107.0091.v1

Weak Deflection Angle of Kazakov-Solodukhin Black Hole in Plasma Medium

Wajiha Javed, Iqra Hussain, Ali Övgün

Subject: Physical Sciences, Acoustics Keywords: Relativity; Gravitation Lensing; Kazakov-Solodukhin black hole; Gauss-Bonnet Theorem; Deflection angle; Plasma medium

Online: 5 July 2021 (10:48:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202003.0056.v1

A Chemically Safe Way to Produce Insect Biomass for Possible Application in Feed and Food Production

Truzzi Cristina, Anna Annibaldi, Federico Girolametti, Leonardo Giovannini, Paola Riolo, Sara Ruschioni, Ike Olivotto, Silvia Illuminati

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: Hermetia illucens prepupae; Black soldier fly; coffee silverskin; microalgae; toxic metals; bioaccumulation; chemical hazard

Online: 4 March 2020 (09:48:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints201911.0195.v1

Finite-Distance Gravitational Deflection of Massive Particles by the Kerr-like Black Hole in the Bumblebee Gravity Model

Zonghai Li, Ali Övgün

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: weak gravitational lensing; Kerr-like black hole; deflection angle; Bumblebee gravity; Gauss-Bonnet theorem

Online: 17 November 2019 (01:46:21 CET)

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Working Paper ARTICLE

Outcomes of a Cluster Randomized Trial in Young Breast Cancer Survivors and Blood Relatives: Surveillance and Genetic Services

Maria C. Katapodi, Chang Ming, Laurel L. Northouse, Sonia A. Duffy, Debra Duquette, Kari E. Mendelsohn-Victor, Kara J. Milliron, Sofia D. Merajver, Ivo D. Dinov, Nancy K. Janz

Subject: Medicine And Pharmacology, Obstetrics And Gynaecology Keywords: HBOC; statewide random sampling; cancer survivorship; targeted intervention; tailored intervention; black participants; family recruitment

Online: 5 September 2019 (16:16:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201906.0239.v1

Chemical and Biochemical Onslaught of Anthropogenic Airborne Species on the Heritage Monument, the Taj Mahal

Deepankar Banerjee, Sabyasachi Sarkar

Subject: Arts And Humanities, Art Keywords: marble black crust; carbon nano particles; soluble dust; blue-green algae (cyanophyceae); humic substances

Online: 24 June 2019 (09:22:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201903.0186.v1

Deflection Angle of Photon Through Dark Matter by Black Holes/Wormholes Using the Gauss-Bonnet Theorem

Ali Övgün

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: Gravitational lensing; Maxwell fisheye; Weak lensing; Dark matter; Gauss-Bonnet theorem; Black hole; Wormhole

Online: 19 March 2019 (12:43:41 CET)

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Preprint REVIEW | doi:10.20944/preprints201812.0055.v1

Distribution, Habitat Preference, and Management of the Invasive Ambrosia Beetle Xylosandrus germanus (Coleoptera: Curculionidae, Scolytinae) in European Forests with Emphasis on the West Carpathians

Juraj Galko, Marek Dzurenko, Christopher M. Ranger, Ján Kulfan, Emanuel Kula, Christo Nikolov, Milan Zúbrik, Peter Zach

Subject: Biology And Life Sciences, Forestry Keywords: black timber bark beetle; biological invasion; Xyleborini; ambrosia beetle; spread; occurrence; ethanol; forest management

Online: 4 December 2018 (09:57:21 CET)

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