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A chemical strategy to separate troublesome americium from lanthanides could help reduce the radiological hazards of spent nuclear fuel and create opportunities for waste re-processing.
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Partially oxidizing methane into syngas via a two step chemical looping scheme is a promising option for methane transformation. However, providing the optimum lattice oxygen to selectively produce syngas represents the major challenge for the development of oxygen carrier materials in chemical looping processes. In this work, a NiO-modified LaFeO3...
Preprint
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Chemicals Commonly Used in Foods Published at miyelin.com. Organized as a compilation. All rights reserved. Does not include medical advice.
Research Proposal
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Rocket Engines Global Market 2022 Opportunities And Strategies To 2030: By Type: (Physically Powered; Chemically Powered; Electrically Powered; Thermal; Nuclear); By Product Type: (Liquid Rocket Engines; Solid Rocket Engines); By Application
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Chemically assisted swapping of labile protons by deuterons is presented for amino acids, polysaccharides, pharmaceutical compounds, and their solid formulations. Solid-state packing interactions in these compounds are elucidated by ¹ H- ² H...
Preprint
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Dicarbofunctionalization is an important efficient synthetic technique for adding two chemical moieties across an alkene. Here, a novel method of reductive dicarbofunctionalization has been developed using a single alkenyl triflate as the electrophile, combined with an unactivated alkene. The reaction does not require an external auxiliary and proc...
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Natural, i.e., unprocessed products are becoming more and more popular amongconsumers and food producers [...]
Chapter
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According to the environmental bulletin in recent years, PM2.5 has been one of the primary pollutants of air pollution in China. And researches about PM2.5 in source analysis, composition, physical and chemical properties, prediction and other aspects have been studied. In order to better figure out the current research status of PM2.5 in China, th...
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Biochemical engineering deals with the processing of biological or chemical materials using enzymes or living cells as biological catalysts [...]
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Histological and Immunohisto chemical studies on the submandibular salivary glands of male albino rats after hexavalent chromium and vitamin C exposure.
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The local dynamics, chaos, and bifurcations of a discrete Brusselator system are investigated. It is shown that a discrete Brusselator system has an interior fixed point P 1 , r if r > 0 . Then, by linear stability theory, local dynamical characteristics are explored at interior fixed point P 1 , r . Furthermore, for the discrete Brusselator system...
Preprint
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Understanding chemical modifications on proteins opens up further possibilities for research on rare diseases. This work proposes visualization approaches using two-dimensional (2D) and three-dimensional (3D) visual representations to analyze and gain insights into protein modifications. In this work, we present the application of Modie Viewer as a...
Presentation
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Raising Chemical Safety & Security Awareness at Yemeni Universities • Finding a unified methodology to achieve chemical security awareness at Yemini Universities • Compiling a team of experts representing all concerned academic organizations
Conference Paper
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Advancing Chemical Security in the University Setting: A Case Study from Aden • Improving Chemical Security and Awareness • Establishing communications with concerned government organizations • Sharing Chemical Security experiences among universities
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Adipic acid, an industrially-important chemical which can be sustainably derived from biomass and post-consumer nylon, is traditionally overlooked as a linker for MOFs. Herein, we report the first direct one-pot...
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Shannon's entropy is a concept that has been present in the field of theoretical chemistry since the early 70s, its versatilityhas permitted associate this concept with the chemical reactivity theory. In this work, we present a development that relates Shannon'sentropy with chemical hardness, the equations obtained were applied to a set of 1641 mol...
Preprint
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We study the stability of first-order dissipative spin-hydrodynamic frameworks. We considered two different first-order dissipative spin-hydrodynamic frameworks. The first one considers the spin chemical potential ($\omega^{\alpha\beta}$) to be first order ($\mathcal{O}(\partial)$) in the hydrodynamic gradient expansion. The hydrodynamic gradient o...
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One hundred and twenty day-old broiler chicks were used to investigate the effect of Agro-chemical treated maize as preservative within a short time of application while the control had no preservative chemicals to test the residual effect on broiler starter chicks. The results showed that birds fed untreated maize had better performance with lower...
Preprint
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The isenthalpic expansion of a non-interacting Fermi gas confined in a box of dimension δ = 1, 2, and 3 is studied. The temperature and chemical potential of the fermionic system are calculated by assuming that the total energy and electron number do not change during expansion. As volume increases, the temperature first increases rapidly until it...
Preprint
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Previously unexplored decarbonylative photochemistry of 3-oxetanone and N-Boc-3- azetidinone is described. Dipoles derived from both compounds undergo [3+2] cycloaddition with a variety of alkenes to produce substituted tetrahydrofurans and pyrrolidines, respectively. The reaction has a sufficiently wide scope to produce scaffolds that were either...
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As is known, the chemical elements called metals make up the majority of all the chemical elements included in the periodic table of D [...]
Presentation
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Catalyst is the heart of ammonia plants. A catalyst accelerates reaction by providing alternate paths to products, the activation energy of each catalytic step being less than that of no catalytic reaction, in the reaction cycle, active centers of catalysis first combine with at least one reactant and then is reproduced with the appearance of produ...
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Diagenesis includes all the biological, physical, chemical, biochemical, and physicochemical alterations that occur immediately after deposition and prior to low-grade metamorphism [...]
Presentation
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Pravastatin and Colchicine drugs, Topics about: Chemical and Physical Properties, Pharmacodynamics ,Pharmacology Mechanism of action ,Pharmacokinetics,...)
Chapter
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Significant progress has been made on biopolymers in recent years. Biopolymers are preferred to other materials because they have specific physical, chemical, biological , biomechanical, and degradation properties. Many natural or synthetic biopoly-mers can degrade hydrolytically or enzymatically and are used for many applications.
Article
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Two different low-molecular-weight gelators have been simultaneously 3D-printed by wet-spinning as filaments, which combine the properties of the two gelators in synergistic ways.
Presentation
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Nanofertilizers use as an alternative to chemical conventional fertilizers is presenting a real challenge in the context of sustainable agriculture and climate change. In this review, researchers' attempts to produce and use nanofertilizers for sustainable crop production has been presented. The advantages and limitation of these smart fertilizers...
Article
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In the present investigation, the author has employed a Chemical Vapour Transport (CVT) technique to grow the crystals of GeS0.25Se75 using iodine as a transporting agent. The grown crystals were then characterized for a Photoelectrochemical(PEC) study to find out solar parameters e.g. Fill Factor (FF), Open Circuit Voltage (Voc), Short Circuit Cur...
Preprint
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We study the near horizon 2d gravity theory which captures the near extremal thermodynamics of BTZ with excess mass $\delta M$ and excess angular momentum $\delta J =\mathcal{L}\, \delta M$ over extremality. We find that the Jackiw-Teitelboim theory is able to capture such departures from extremality with an additional parameter $\mathcal{L}$ relat...
Article
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The Nansen Legacy (NL) JC3 cruise (19.02.-11.03.2022) aimed to fill regional, temporal and scientific gaps following the earlier NL cruises, in particular during the winter-to-spring transition and in the northern part of the NL transect to the Nansen Basin. Joint physical, chemical, and biological sampling and experiments for new technology addres...
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Let $ G $ be a graph with the vertex set $ V(G) $. A set $ D\subseteq V(G) $ is a total k-dominating set if every vertex $ v\in V(G) $ has at least $ k $ neighbours in $ D $. The total k-domination number $ \gamma_{kt}(G) $ is the cardinality of the smallest total k-dominating set. For $ k = 2 $ the total 2-dominating set is called double total dom...
Chapter
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Nuclear lattice model consistent with all the features of the periodicity of the chemical elements is presented. Physical explanation for the electronic configurations of the elements is proposed.
Article
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The principal aim of this research is to propose a new general sixteenth-order iterative scheme that is applicable to any existing multi-point fourth and eighth-order method based on Newton’s method as the first step. The advantages of the new iterative class are its high efficiency, a simple body structure and a simple general form of the error eq...
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In the ecotoxicological risk assessment, acute toxicity is one of the most significant criteria.
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The increasing attention towards climate change and greenhouse gas emissions makes the exploitation of renewable energy sources one of the key pathways for sustainable power generation or chemical production [...]
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The benefits of publishing research papers first in preprint form are substantial and long‐lasting also in chemistry. Recounting the outcomes of our team's nearly six‐year journey through preprint publishing, we show evidence that preprinting research substantially benefits both early career and senior researchers in today's highly interdisciplinar...
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TEMPO-covered redox-switchable paramagnetic interfaces were prepared by covalent cathodic grafting of a diamagnetic iodoalkyl precursor.
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Effects of organic and inorganic fertilizers on soil physical and chemical properties and the yield response of Red amaranth (amaranthus curentus)
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In this paper, I review the effects of the diet of ladybirds on chemical defence in this group of beetles. The tendency to reflex bleed and the diversity of autogenously produced alkaloids in different taxa may be evolutionarily related to diet and the likelihood of food limitation. Within predatory species, both prey quantity and quality have been...
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This study was designed to investigate the chemical constituents from Actinodaphne pruinosa growing in Malaysia. A phytochemical investigation of the leaves part resulted in the isolation of boldine (1), norboldine (2), laurotetanine (3), reticuline (4), syringaresinol (5), lupeol (6), and taraxerol (7). The structures of the isolated phytochemical...