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Journal articles on the topic 'Chemical reaction issue'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Yang, Xueming, David C. Clary, and Daniel M. Neumark. "Chemical reaction dynamics." Chemical Society Reviews 46, no. 24 (2017): 7481–82. http://dx.doi.org/10.1039/c7cs90121f.

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2

Metcalfe, Ian. "Special Topic Issue—Chemical Reaction Engineering." Chemical Engineering Research and Design 78, no. 7 (2000): 933. http://dx.doi.org/10.1205/026387600528094.

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3

Zhu, Huacheng, Kama Huang, and Junwu Tao. "Special Issue on “Microwave Applications in Chemical Engineering”." Processes 8, no. 4 (2020): 491. http://dx.doi.org/10.3390/pr8040491.

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Microwave heating has been widely used in the chemical industry because of its advantages, such as fast heating rate, selective and controllable heating, increasing reaction rate and reducing by-products in chemical reactions. The Special Issue contains research on microwave applications in chemical engineering.

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4

Rarey, Matthias, Marc C. Nicklaus, and Wendy Warr. "Special Issue on Reaction Informatics and Chemical Space." Journal of Chemical Information and Modeling 62, no. 9 (2022): 2009–10. http://dx.doi.org/10.1021/acs.jcim.2c00390.

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KEKUL, Özgenur, Burcu ÜSTÜN, Özgür KÖMÜRCÜ, Sezgin BİLGİN, and Deniz KARAKAYA. "Skin reaction related to povidone iodine use." Journal of Experimental and Clinical Medicine 38, no. 3 (2021): 389–92. http://dx.doi.org/10.52142/omujecm.38.3.36.

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Nowadays, 10% povidone-iodine is a topical antiseptic solution that is commonly used in surgical areas’ sterilization, wound cleaning and daily wound dressing. Severe complications may arise from povidone-iodine when it is not used carefully and in adequate proportion. Povidone-iodine-induced chemical skin reactions is one of the severe complications. Given the widespread use of povidone-iodine, clinicians need to be aware of this possible adverse drug reaction and of preventive cautions. This report presents two cases about povidone-iodine related skin reaction (these reactions are also calle

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Yang, Xueming, and Alec M. Wodtke. "Surface reaction dynamics." Chemical Society Reviews 45, no. 13 (2016): 3573–75. http://dx.doi.org/10.1039/c6cs90049f.

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Sirotek, Vladimír, and Kateřina Tláskalová. "Chemical Reactions in Practical Chemistry Teaching." Journal of Physics: Conference Series 3037, no. 1 (2025): 012011. https://doi.org/10.1088/1742-6596/3037/1/012011.

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Abstract Chemical process is one of the key thematic units in chemistry education. The article focuses on the issue of chemical reactions in practical chemistry teaching at primary and secondary schools. Several concrete experiments are presented, through which pupils and students can learn about the basic types of chemical reactions (chemical combining, chemical decomposition, substitution reactions, conversion) and thus combine the information obtained with a quantitative evaluation of a chemical reaction. These concrete examples of practical tasks will introduce pupils and students to quali

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Virágh, Eszter, and Bálint Kiss. "Strong Reachability of Reactions with Reversible Steps." Hungarian Journal of Industry and Chemistry 46, no. 2 (2018): 19–25. http://dx.doi.org/10.1515/hjic-2018-0013.

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Abstract The controllability of reactions is an important issue in the chemical industry. The control of reactions is of great practical interest in order to ensure the energy- and time-efficient production of compounds. This paper studies the dynamical models of some chemical reactions in order to verify their controllability with regard to a candidate input signal, namely the change in the ambient temperature of a reaction.

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Kurnia, Jundika C., and Agus P. Sasmito. "Catalyst Special Issue on Catalytic Reactors Design for Industrial Applications." Catalysts 11, no. 4 (2021): 440. http://dx.doi.org/10.3390/catal11040440.

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Cusco, Laurence. "Special Issue—Reaction Hazards." Process Safety and Environmental Protection 82, no. 1 (2004): 3. http://dx.doi.org/10.1205/095758204322777606.

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Andersen, Jakob L., Christoph Flamm, Daniel Merkle, and Peter F. Stadler. "An intermediate level of abstraction for computational systems chemistry." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 375, no. 2109 (2017): 20160354. http://dx.doi.org/10.1098/rsta.2016.0354.

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Computational techniques are required for narrowing down the vast space of possibilities to plausible prebiotic scenarios, because precise information on the molecular composition, the dominant reaction chemistry and the conditions for that era are scarce. The exploration of large chemical reaction networks is a central aspect in this endeavour. While quantum chemical methods can accurately predict the structures and reactivities of small molecules, they are not efficient enough to cope with large-scale reaction systems. The formalization of chemical reactions as graph grammars provides a gene

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Ma, Xinyou, and William L. Hase. "Perspective: chemical dynamics simulations of non-statistical reaction dynamics." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 375, no. 2092 (2017): 20160204. http://dx.doi.org/10.1098/rsta.2016.0204.

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Non-statistical chemical dynamics are exemplified by disagreements with the transition state (TS), RRKM and phase space theories of chemical kinetics and dynamics. The intrinsic reaction coordinate (IRC) is often used for the former two theories, and non-statistical dynamics arising from non-IRC dynamics are often important. In this perspective, non-statistical dynamics are discussed for chemical reactions, with results primarily obtained from chemical dynamics simulations and to a lesser extent from experiment. The non-statistical dynamical properties discussed are: post-TS dynamics, includin

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13

Gavriilidis, Asterios. "Special Topic Issue—Reaction Engineering: Microstructured Reactors." Chemical Engineering Research and Design 81, no. 7 (2003): 709–10. http://dx.doi.org/10.1205/026387603322302869.

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14

Jiang, Yinjie, Ying WEI, Fei Wu, Zhengxing Huang, Kun Kuang, and Zhihua Wang. "Learning Chemical Rules of Retrosynthesis with Pre-training." Proceedings of the AAAI Conference on Artificial Intelligence 37, no. 4 (2023): 5113–21. http://dx.doi.org/10.1609/aaai.v37i4.25640.

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Retrosynthesis aided by artificial intelligence has been a very active and bourgeoning area of research, for its critical role in drug discovery as well as material science. Three categories of solutions, i.e., template-based, template-free, and semi-template methods, constitute mainstream solutions to this problem. In this paper, we focus on template-free methods which are known to be less bothered by the template generalization issue and the atom mapping challenge. Among several remaining problems regarding template-free methods, failing to conform to chemical rules is pronounced. To address

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A. Jawad, Asmaa, Zaid H. Mahmoud, Rukaibaa Ali Chechan, et al. "Local chemical compounds: synthesis and characterization with antibiotic application." International Journal of Research in Engineering and Innovation 08, no. 02 (2024): 47–51. http://dx.doi.org/10.36037/ijrei.2024.8201.

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In this work, the main idea was to introduce toxic cyanide compounds, convert them through a chemical reaction into non-toxic compounds, and apply them as growing media in farms to grow mushrooms. Pathogen resistance to traditional antibiotics is becoming a public health issue, necessitating the search for new, effective remedies. α-amino-nitrile ligands are a paramount medium in chemical reactions. The reaction of aromatic aldehydes substituted with various groups and secondary amines (diphenylamine) in the presence of potassium cyanide salt has produced novel organic compounds. Biological co

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Bansal, Parit, Anne Morgat, Kristian B. Axelsen, et al. "Rhea, the reaction knowledgebase in 2022." Nucleic Acids Research 50, no. D1 (2021): D693—D700. http://dx.doi.org/10.1093/nar/gkab1016.

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Abstract Rhea (https://www.rhea-db.org) is an expert-curated knowledgebase of biochemical reactions based on the chemical ontology ChEBI (Chemical Entities of Biological Interest) (https://www.ebi.ac.uk/chebi). In this paper, we describe a number of key developments in Rhea since our last report in the database issue of Nucleic Acids Research in 2019. These include improved reaction coverage in Rhea, the adoption of Rhea as the reference vocabulary for enzyme annotation in the UniProt knowledgebase UniProtKB (https://www.uniprot.org), the development of a new Rhea website, and the designation

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Luo, Ming, Shu Zhong Wang, and Long Fei Wang. "Investigation of Chemical-Looping Combustion of Solid Fuels." Applied Mechanics and Materials 316-317 (April 2013): 95–98. http://dx.doi.org/10.4028/www.scientific.net/amm.316-317.95.

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The chemical-looping combustion process of solid fuels has been investigated using thermogravimetric analysis (TGA). Experimental results showed that CuO showed high reactivity during reduction process with coal. The coal conversion rate increased with the increase of reaction temperature, and the optimum reaction temperature was about 800 °C. When CuO was supported on TiO2, the temperature to initiate the reaction decreased and the coal conversion rate also increased. Candlenut wood ash, which contained high amount of alkali metal, displayed catalytic activity in mixtures with coal during the

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Kruglova, L. S., A. V. Bezborodova, L. A. Rubtsova, E. A. Shatokhina, and L. S. Kholupova. "Contact Dermatitis: Current Standing of the Issue." Effective Pharmacotherapy 20, no. 1 (2024): 46–50. http://dx.doi.org/10.33978/2307-3586-2024-20-1-46-50.

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Contact dermatitis (CD) is one of the most common inflammatory skin diseases caused by exposure to exogenous substances. There are 2 subtypes of CD: irritant and allergic. The first is based on an inflammatory reaction to direct chemical damage to the skin barrier; allergic CD is based on a delayed type IV hypersensitivity reaction that occurs after sensitization to a specific hapten. The most common allergens are nickel, cobalt, balsam of Peru, preservatives and dyes. Topical glucocorticosteroids are considered the gold standard in the treatment of contact dermatitis. Among all topical glucoc

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19

Ancheyta, Jorge. "PREFACE TO SPECIAL ISSUE: MEXICAN CONGRESS ON CHEMICAL REACTION ENGINEERING (MCCRE 2008)." Chemical Engineering Communications 196, no. 10 (2009): 1139. http://dx.doi.org/10.1080/00986440902834569.

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20

Ge, Wei, Qingya Liu, and Suojiang Zhang. "Special issue on chemical reaction engineering for efficient and clean fuel processing." Fuel Processing Technology 108 (April 2013): 1. http://dx.doi.org/10.1016/j.fuproc.2012.08.008.

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21

Wang, Zhichao, and Xiaoyi Yang. "NOx Formation Mechanism and Emission Prediction in Turbulent Combustion: A Review." Applied Sciences 14, no. 14 (2024): 6104. http://dx.doi.org/10.3390/app14146104.

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The field of nitric oxide (NOx) production combined with turbulent flow is a complex issue of combustion, especially for the different time scales of reactions and flow in numerical simulations. Around this, a series of approach methods, including the empirical formula approach, the computational fluid dynamics (CFD) approach coupling with an infinite rate chemical reaction, the chemical reaction networks (CRNs), and the CFD approach coupling with CRNs, were classified, and we discussed its advantages and applicability. The empirical-formula approach can provide an average range of NOx concent

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22

Xu, Changjin, Dan Mu, Zixin Liu, et al. "Bifurcation Dynamics and Control Mechanism of a Fractional-Order Delayed Brusselator Chemical Reaction Model." MATCH - Communications in Mathematical and in Computer Chemistry 89, no. 1 (2022): 73–106. http://dx.doi.org/10.46793/match.89-1.073x.

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Building differential dynamical systems to describe the changing relationship among chemical components is a vital aspect in chemistry. In this present manuscript, we put forward a new fractional-order delayed Brusselator chemical reaction model. By virtue of contraction mapping principle, we investigate the existence and uniqueness of the solution of fractional-order delayed Brusselator chemical reaction model. With the aid of mathematical analysis technique, we consider the non-negativeness of the solution of the fractional-order delayed Brusselator chemical reaction model. Making use of the

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23

Liu, Ting, Xiangyu Dou, Yonghui Xu, Yongjun Chen, and Yongsheng Han. "In Situ Investigation of Dynamic Silver Crystallization Driven by Chemical Reaction and Diffusion." Research 2020 (February 10, 2020): 1–11. http://dx.doi.org/10.34133/2020/4370817.

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Rational synthesis of materials is a long-term challenging issue due to the poor understanding on the formation mechanism of material structure and the limited capability in controlling nanoscale crystallization. The emergent in situ electron microscope provides an insight to this issue. By employing an in situ scanning electron microscope, silver crystallization is investigated in real time, in which a reversible crystallization is observed. To disclose this reversible crystallization, the radicals generated by the irradiation of electron beam are calculated. It is found that the concentratio

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24

Dudukovic, Milorad. "Chemical reaction engineering, environmental protection and sustainable development." Chemical Industry and Chemical Engineering Quarterly 13, no. 3 (2007): 127–34. http://dx.doi.org/10.2298/ciceq0703127d.

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This paper is based on the lecture delivered at the First South East European Congress of Chemical Engineering (SEECCHE1) held on September 25-28, 2005 in Beograd, Serbia. Time constraints did not permit me to publish it in the proceedings of the conference, and since the topic considered is very much pertinent to the current developments in our profession, it seems appropriate to present it in this special issue of the same journal that carried the papers from that conference. In addition, the paper represents a small tribute to my brother Aleksandar for his dedicated work in emphasizing the

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25

Sun, Liyan, Junjie Lin, Dali Kong, Kun Luo, and Jianren Fan. "Three-Dimensional Computation Fluid Dynamics Simulation of CO Methanation Reactor with Immersed Tubes." Energies 15, no. 1 (2022): 321. http://dx.doi.org/10.3390/en15010321.

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CO methanation is an exothermic process, and heat removal is an essential issue for the methanation reactor. Numerical studies were carried out to investigate the performance of a 3D fluidized bed methanation reactor with immersed cooling tubes. The simulations were carried out in the frame of the Euler–Euler model to analyze the performance of the reactor. The influences of operating temperatures were studied to understand the reaction characteristics. The temperature increases rapidly neared the inlet due to the reactions. The immersed tubes were effective at removing the reaction heat. The

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26

Mu, Dan, Changjin Xu, Zixin Liu, and Yicheng Pang. "Further Insight into Bifurcation and Hybrid Control Tactics of a Chlorine Dioxide-Iodine-Malonic Acid Chemical Reaction Model Incorporating Delays." match Communications in Mathematical and in Computer Chemistry 89, no. 3 (2023): 529–66. http://dx.doi.org/10.46793/match.89-3.529m.

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Delayed differential equation is an important tool to describe the interaction of different chemical substance in chemistry. In this present research, we set up a novel chlorine dioxide-iodine-malonic acid chemical reaction model incorporating delays. The peculiarity of solution and Hopf bifurcation of the formulated delayed chlorine dioxide-iodine-malonic acid chemical reaction model are explored. Firstly, the existence and uniqueness is investigated via fixed point theorem. Secondly, the non-negativeness of solution is studied via some proper mathematical inequality shills. Thirdly, the stab

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27

Alper, Mark. "Biology and Materials? Part II." MRS Bulletin 17, no. 11 (1992): 36–38. http://dx.doi.org/10.1557/s0883769400046637.

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The October issue of the MRS Bulletin focused on two areas of research in biomolecular materials; biomineralization and protein fibers. In addition, the development of a new carbohydrate-based material with a variety of novel properties was discussed.In this issue, we turn to two other types of materials based on biological systems: (1) polymers and other materials produced through enzyme-catalyzed biosynthetic reactions and (2) protein and lipid complexes based on biological membrane structures. In each case, as in the October issue, a discussion of how Nature produces and uses these material

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Rarey, Matthias, Marc C. Nicklaus, and Wendy Warr. "Call for Papers for the Special Issue: From Reaction Informatics to Chemical Space." Journal of Chemical Information and Modeling 61, no. 4 (2021): 1531–32. http://dx.doi.org/10.1021/acs.jcim.1c00321.

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29

Santacesaria, Elio, Riccardo Tesser, and Vincenzo Russo. "Special Issue on “Industrial Chemistry Reactions: Kinetics, Mass Transfer and Industrial Reactor Design”." Processes 10, no. 2 (2022): 411. http://dx.doi.org/10.3390/pr10020411.

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The impressive developments in commercially available technologies, in terms of new equipment and faster computers, allow us to solve ever-more complicated chemical and technical issues within industrial chemistry and reaction engineering fields [...]

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30

Liu, Zuozhi. "Bifurcation Anti-Control Tactics of a Fractional-Order Stable Chemical Reaction System." MATCH - Communications in Mathematical and in Computer Chemistry 89, no. 1 (2022): 143–73. http://dx.doi.org/10.46793/match.89-1.143l.

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Establishing suitable differential dynamical models to describe the real natural phenomenon in chemistry and physics has become a very hot topic in nowadays society. In this present research, we deal with a fractional-order chemical reaction system. Taking advantage of the fixed point theorem, we prove the existence and uniqueness of the fractional-order chemical reaction system. Using the inequality skill, we prove the non-negativeness of the fractional-order chemical reaction system. By applying a suitable function, we prove the uniform boundedness of the solution to the fractional-order che

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31

Katayama, Misaki, and Kazuo Kato. "Simultaneous Analysis of Reaction Distribution at LiFePO₄ and LiCoO₂ Electrodes of Lithium-Ion Batteries." ECS Meeting Abstracts MA2024-02, no. 4 (2024): 454. https://doi.org/10.1149/ma2024-024454mtgabs.

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The electrode reaction distribution of lithium-ion batteries is a noteworthy issue for the construction of safe and sustainable storage battery systems. Electrode reactions at composite electrodes are inhomogeneous on the micrometer to millimeter scale due to local differences in electronic and ionic conductivity. There are many reports on the reaction distribution of single electrodes. How the inhomogeneous chemical state distribution generated in the electrode affects the subsequent charge-discharge reaction has not been systematically studied. The purpose of this study is to clarify how the

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Wang, Dunwei. "(Invited) Understanding the Effects of Charge Distribution on the Oxidation of Water." ECS Meeting Abstracts MA2023-01, no. 37 (2023): 2175. http://dx.doi.org/10.1149/ma2023-01372175mtgabs.

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Water oxidation is an important first step of photosynthesis. Presently, it remains a challenge to carry out this reaction efficiently using low-cost materials. Among the questions that remain to be answered are the influences by charge distribution at or on the catalyst surfaces where water oxidation takes place. Recent literature has shown that the reaction can be sensitive to the charge density or the charge potential or both. Generally, high charge density or high charge potential favors faster kinetic constants. However, the existing studies face challenges as most of them were carried ou

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Mai, Yuhua, Yangyi Qian, Haihang Lan, and Linshen Li. "STUDENTS’ CONCEPT ORGANISATION REGARDING CHEMICAL EQUILIBRIUM IN UPPER-SECONDARY EDUCATION: BASED ON REACTION TIME TECHNIQUE." Journal of Baltic Science Education 20, no. 3 (2021): 443–55. http://dx.doi.org/10.33225/jbse/21.20.443.

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Chemical equilibrium is so important domain knowledge in chemistry that the corresponding organisation of concepts in students has been an interesting but unsolved issue. A deeper understanding of how students organise the relevant concepts in long-term memory is beneficial to develop more targeted teaching practices. This research utilized the reaction time technique as a new approach to exploring upper-secondary school students’ organisation of concepts regarding chemical equilibrium. A category judgment task involving 247 Chinese twelfth-grade students from two upper-secondary schools was c

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RADDE, NICOLE. "THE EFFECT OF TIME SCALE DIFFERENCES AND TIME DELAYS ON THE STRUCTURAL STABILITY OF OSCILLATIONS IN A TWO-GENE NETWORK." Advances in Complex Systems 11, no. 03 (2008): 471–83. http://dx.doi.org/10.1142/s0219525908001751.

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Biological networks are often modeled by systems of ordinary differential equations. In chemical reaction kinetics, for instance, sigmoid functions represent the regulation of gene expression via transcription factors. Solutions of these models tend to converge to a unique steady state, and feedback control mechanisms are required for a more complex dynamic behavior. This paper focuses on periodic behavior in two-component regulatory networks. Here, a key issue is that oscillations in chemical reaction systems are usually not robust with respect to parameter variations. Small variations lead t

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Pucci, Fabrizio, and Marianne Rooman. "Deciphering noise amplification and reduction in open chemical reaction networks." Journal of The Royal Society Interface 15, no. 149 (2018): 20180805. http://dx.doi.org/10.1098/rsif.2018.0805.

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The impact of fluctuations on the dynamical behaviour of complex biological systems is a longstanding issue, whose understanding would elucidate how evolutionary pressure tends to modulate intrinsic noise. Using the Itō stochastic differential equation formalism, we performed analytic and numerical analyses of model systems containing different molecular species in contact with the environment and interacting with each other through mass-action kinetics. For networks of zero deficiency, which admit a detailed- or complex-balanced steady state, all molecular species are uncorrelated and their F

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Wu, Qian, Xiao Tang, Lei Kong, et al. "Evaluation and Bias Correction of the Secondary Inorganic Aerosol Modeling over North China Plain in Autumn and Winter." Atmosphere 12, no. 5 (2021): 578. http://dx.doi.org/10.3390/atmos12050578.

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Secondary inorganic aerosol (SIA) is the key driving factor of fine-particle explosive growth (FPEG) events, which are frequently observed in North China Plain. However, the SIA simulations remain highly uncertain over East Asia. To further investigate this issue, SIA modeling over North China Plain with the 15 km resolution Nested Air Quality Prediction Model System (NAQPMS) was performed from October 2017 to March 2018. Surface observations of SIA at 28 sites were obtained to evaluate the model, which confirmed the biases in the SIA modeling. To identify the source of these biases and reduce

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El Harfouf, Amine, Abderrahim Wakif, and Sanaa Hayani Mounir. "Investigation of the Impact of a Chemical Reaction on the Magnetohydrodynamic Boundary Layer Flow of a Radiative Maxwell Fluid over a Stretching Sheet Containing Nanoparticles Employing the Variational Iteration Method." WSEAS TRANSACTIONS ON FLUID MECHANICS 19 (September 23, 2024): 270–81. http://dx.doi.org/10.37394/232013.2024.19.25.

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The heat and mass transmission properties of a 2-D electrically conducting incompressible Maxwell fluid past a stretched sheet were studied under thermal radiation, heat generation/absorption, and chemical reactions. This issue has a variety of real-world applications, most notably polymer extrusion and metal thinning. The transport equations account for both Brownian motion and thermophoresis during chemical reactions. Using similarity variables allows for non-dimensionalization of the stream's PDEs and associated boundary conditions. The resulting modified ODEs are solved with the variationa

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Li, Guangbi, Wei Liu, Chenliang Ye, Xiaoyun Li, and Chuan-Ling Si. "Chemocatalytic Conversion of Cellulose into Key Platform Chemicals." International Journal of Polymer Science 2018 (August 14, 2018): 1–21. http://dx.doi.org/10.1155/2018/4723573.

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Chemocatalytic transformation of lignocellulosic biomass to value-added chemicals has attracted global interest in order to build up sustainable societies. Cellulose, the first most abundant constituent of lignocellulosic biomass, has received extensive attention for its comprehensive utilization of resource, such as its catalytic conversion into high value-added chemicals and fuels (e.g., HMF, DMF, and isosorbide). However, the low reactivity of cellulose has prevented its use in chemical industry due to stable chemical structure and poor solubility in common solvents over the cellulose. Rece

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Trofmovich, M. A., A. L. Yurkov, A. A. Galiguzov, L. V. Malakho, L. V. Oktyabr'skaya, and S. V. Minchuk. "High-temperature transformations in the fibrous-polymer composites at ablation testing." NOVYE OGNEUPORY (NEW REFRACTORIES), no. 8 (December 27, 2018): 43–48. http://dx.doi.org/10.17073/1683-4518-2018-8-43-48.

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The comparative investigation on the ablation transformations were carried out for the phenolformaldehyde resin composites on base of silica fabric and hollow corundum micro spheres. It was establish that the corundum micro spheres addition lead to the composite's heat conductivity reduction. As a result the temperature increased at the exposed spot, the linear erosion rate increased by the factor of 2,7 and the coking front line decreased by a factor of 2,3. In the issue the ablation gave rise to the high-temperature mechanical and chemical erosion and these last in turn triggered the number

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Akindele, M. Okedoye Azeez A. Waheed. "Passive Control MHD Flow in the Presence of Arrhenius Chemical Reaction with Heat Generation/Absorption." International Journal of Recent Research in Mathematics Computer Science and Information Technology 9, no. 2 (2023): 55–69. https://doi.org/10.5281/zenodo.7503297.

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<strong>Abstract:</strong> The paper focuses on passive control MHD flow in the presence of Arrhenius Chemical reactions with Heat Generation Absorption. In this paper, a mathematical model for passive control MHD flow in the presence of Arrhenius Chemical reactions with Heat Generation Absorption was formulated. The momentum, energy, magnetic, and species equations were non-dimensionalized to arrive at dimensionless equations. The dimensionless equations were solved analytically with the use of asymptotic expansions defined about activation energy parameter . The properties of solutions were

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Lakshmi, Appidi, Siddulu Malga Bala, Matta Sweta, and Pramod Kumar P. "Effects of Thermal Radiation on Temperature and Concentration on MHD Free Convection Flow Past a Vertical Porous Plate in the Presence of Chemical Reaction and Heat Source Parameter." Indian Journal of Science and Technology 14, no. 17 (2021): 1354–63. https://doi.org/10.17485/IJST/v14i17.235.

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Abstract <strong>Objective:</strong> To study the effects of chemical reaction and heat source parameter on MHD Free Convection Flow Past a Vertical Porous Plate. <strong>Method:</strong> The problem is represented by coupled non-direct fractional differential conditions. The non-dimensional conditions of the issue have been tackled mathematically utilizing the Finite-Element strategy. <strong>Findings:</strong> The effects of governing parameters such as chemical reaction, heat source, permeability, radiation and many others are discussed quantitatively with the help

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Ede, Andrew. "Waiting to Exhale: Chaos, Toxicity and the Origins of the U.S. Chemical Warfare Service." Journal of Law, Medicine & Ethics 39, no. 1 (2011): 28–33. http://dx.doi.org/10.1111/j.1748-720x.2011.00545.x.

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In 2008, Susan L. Smith published “Mustard Gas and American Race-Based Human Experimentation in World War II.” Research, undertaken by the US Army, attempted to quantify the effect of mustard gas (actually a volitile liquid) and othe chemical agents on people from different racial groups. This was based on the idea that different races would respond differently to the toxins, and in particular that this would be evident through dermal reaction. In other words, different skin color might mean different skin constitution. Some of the testing seemed reasonable, since new chemicals and equipment h

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Affan, Hira, Rudolf Friedrich, and Ayesha Rehman. "Study of front instability in advection–reaction–diffusion systems." International Journal of Modern Physics B 31, no. 27 (2017): 1750191. http://dx.doi.org/10.1142/s0217979217501910.

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We study the evolution of unstable front in reaction–diffusion systems analytically and derive the evolution equation for the fronts of a bistable system in the presence of advection. As an issue, we investigate the stability of planar fronts and explicitly show that the coupling to advection on the basis of the model of active fluids’ or, alternatively, on the model of an interfacial reaction can lead to an instability of the front, eventually leading to a fractalization of the chemical fronts.

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Harold, Mike, Dave West, and Ben Wilhite. "Preface for the NASCRE-3 Special Issue (3rd North American Symposium on Chemical Reaction Engineering)." Industrial & Engineering Chemistry Research 52, no. 44 (2013): 15225. http://dx.doi.org/10.1021/ie4029329.

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Orlik, Marek. "O SIŁACH NAPĘDOWYCH W PRZYRODZIE – KONCEPCJE, INTERPRETACJE I NIEPOROZUMIENIA." Wiadomości Chemiczne 77, no. 1 (2023): 1–34. https://doi.org/10.53584/wiadchem.2023.1.1.

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Prepared for presentation within the Didactic Section of Polish Chemical Society, the study summarizes selected problems and concepts of teaching the basics of chemical reaction energetics as part of chemical undergraduate studies. The following problems are discussed: 1) indication of misunderstandings related to the definition of standard states in thermodynamics, with particular emphasis on the unfortunate assignment of the temperature of 298.15 K as "standard temperature", 2) problems with the interpretation of entropy as a "measure of disorder", with a recommendation regarding for underst

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Che, Zhongmei, Yanan Yuan, Jianxin Qin, et al. "Progress of Nonmetallic Electrocatalysts for Oxygen Reduction Reactions." Nanomaterials 13, no. 13 (2023): 1945. http://dx.doi.org/10.3390/nano13131945.

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As a key role in hindering the large-scale application of fuel cells, oxygen reduction reaction has always been a hot issue and nodus. Aiming to explore state-of-art electrocatalysts, this paper reviews the latest development of nonmetallic catalysts in oxygen reduction reactions, including single atoms doped with carbon materials such as N, B, P or S and multi-doped carbon materials. Afterward, the remaining challenges and research directions of carbon-based nonmetallic catalysts are prospected.

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Zhang, Huiwen, Xiaoman Zhang, Lei Ding, Miao Gong, Ying Su, and Shengwei Wang. "Polymerization and oxidation of phenols in supercritical water." Water Science and Technology 80, no. 4 (2019): 620–33. http://dx.doi.org/10.2166/wst.2019.295.

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Abstract The treatment of toxic and difficult-to-degrade phenolic compounds has become a key issue in the coking, pharmaceutical, and chemical industries. Considering the polymerization and oxidation of phenolic compounds in supercritical water partial oxidation/supercritical water oxidation (SCWPO/SCWO), the present study reviewed the removal efficiency and reaction pathway of phenolic compounds and phenolic waste/wastewater under different reaction conditions. Temperature is the dominant factor affecting the SCWO reaction. When the oxidizing ability is insufficient, the organics polymerize t

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Gao, Jiancun, Hongbin Sui, Siyuan Wu, et al. "Interaction Study of Oxygen and Iron-Sulfur Clusters Based on the Density Functional Theory." International Journal of Chemical Engineering 2022 (September 24, 2022): 1–9. http://dx.doi.org/10.1155/2022/9812188.

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For the petrochemical industry, the spontaneous burning of iron sulfide compounds has been a major issue. In this study, XRD characterization of samples of iron sulfide compounds with spontaneous combustion tendency revealed that amorphous FeS was the primary constituent of the samples. A molecular simulation was used to build an amorphous FeS cluster model, and the density functional theory was used to examine the adsorption and reactivity characteristics of Fe4S4 clusters with O2. Different adsorption structures are generated by considering different adsorption sites and the electronic chara

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Martínez-Bachs, Berta, and Albert Rimola. "Prebiotic Peptide Bond Formation Through Amino Acid Phosphorylation. Insights from Quantum Chemical Simulations." Life 9, no. 3 (2019): 75. http://dx.doi.org/10.3390/life9030075.

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Condensation reactions between biomolecular building blocks are the main synthetic channels to build biopolymers. However, under highly diluted prebiotic conditions, condensations are thermodynamically hampered since they release water. Moreover, these reactions are also kinetically hindered as, in the absence of any catalyst, they present high activation energies. In living organisms, in the formation of peptides by condensation of amino acids, this issue is overcome by the participation of adenosine triphosphate (ATP), in which, previous to the condensation, phosphorylation of one of the rea

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Lee, Seungmin, and Enyuan Hu. "Evaluation and Regulation of Interfacial Reaction of Cathode for Lithium-Sulfur Batteries to Improve Electrochemical Performance." ECS Meeting Abstracts MA2024-02, no. 1 (2024): 128. https://doi.org/10.1149/ma2024-021128mtgabs.

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In the pursuit of high-energy-density batteries, sulfur (S)-based materials have emerged as promising cathode materials due to high-capacity (1,672 mAh g-1 for lithium-sulfur) [1]. However, their degradation caused by the dissolution of reaction intermediates during electrochemical cycling, has led to diminished electrochemical performance. To address this issue, various surface treatments, including the formation of chemical/physical protective layers and doping with heteroatoms, have been explored [1-2]. Despite these efforts, real-time evaluation of the degradation and the effectiveness of

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