Gotowe bibliografie tematyczne / Chemical bonds research

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  1. Artykuły w czasopismach
  2. Rozprawy doktorskie
  3. Książki
  4. Części książek
  5. Streszczenia konferencji
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Gotowa bibliografia na temat „Chemical bonds research”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 21 lutego 2023

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Artykuły w czasopismach na temat "Chemical bonds research"

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Liu, Runzhan, Guoyong Mao, and Ning Zhang. "Research of chemical elements and chemical bonds from the view of complex network." Foundations of Chemistry 21, no. 2 (June 11, 2018): 193–206. http://dx.doi.org/10.1007/s10698-018-9318-7.

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Morawetz, Herbert. "History of Rubber Research." Rubber Chemistry and Technology 73, no. 3 (July 1, 2000): 405–26. http://dx.doi.org/10.5254/1.3547599.

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Abstract After the discovery of the tapping of Hevea rubber trees in the middle of the eighteenth century and early technological applications of Hevea rubber, efforts to discover the chemical nature of rubber started with the determination of its elemental composition in 1826. Later it was shown that rubber pyrolysis yields low molecular weight chemicals with the identical elemental composition. It was long believed that these add to each other by “secondary valence bonds.” However Staudinger's work starting in 1920 proved that Hevea (H.) rubber consists of chains linked by covalent bonds. Th
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Li, Pei Yi, Mei Yun Zhang, Zhi Jie Wang, and Chun Tao Lin. "A Research on Modification of Paper-Based Functional Polyurethane Material." Advanced Materials Research 311-313 (August 2011): 1186–89. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.1186.

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The methods of synthesizing polyurethane (Isophorone diisocyanate IPDI) with paper were investigated. The combination of SEM and IR analysis were used to analyze the chemical and physical characteristics and forming mechanism of the polyurethane derived from paper. The physical of base-paper material improved remarkably on the conditions of dosage of IPD 12%, reaction time 10min and temperature 60°C, facture length elevated by54.4%, folding strength raised by 12.4 times, and wet strength / dry strength was 50.54%.It was found that carbonate bond was formed between IPDI with cellulose in fibers
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Abed, Heba F., Waad H. Abuwatfa, and Ghaleb A. Husseini. "Redox-Responsive Drug Delivery Systems: A Chemical Perspective." Nanomaterials 12, no. 18 (September 14, 2022): 3183. http://dx.doi.org/10.3390/nano12183183.

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With the widespread global impact of cancer on humans and the extensive side effects associated with current cancer treatments, a novel, effective, and safe treatment is needed. Redox-responsive drug delivery systems (DDSs) have emerged as a potential cancer treatment with minimal side effects and enhanced site-specific targeted delivery. This paper explores the physiological and biochemical nature of tumors that allow for redox-responsive drug delivery systems and reviews recent advances in the chemical composition and design of such systems. The five main redox-responsive chemical entities t
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Wu, Shao Gui, Ya Ru Fan, and Jun Zhou. "Research Progress on Preparation Methods of PMIA Fiber." Advanced Materials Research 463-464 (February 2012): 769–72. http://dx.doi.org/10.4028/www.scientific.net/amr.463-464.769.

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PMIA is a functional fiber with superior heat-resistance, flame resistance, high temperature dimensional stability and electrical insulation. In PMIA crystal structure, there exist hydrogen bonds between two planes in the crystal and they are arranged in grid. The strong interactions between hydrogen bonds result in a very stable chemical structure of PMIA. Owing to lower internal rotation potential energy than PPTA, PMIA molecular chains are flexible structures and its elastic modulus is in the same level as other flexible macromolecules. In this paper, the structure character of molecular ch
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Santoso, Agus Muji, Bayu Guruh Binangkit, Mohamad Amin, Sutiman Bambang Sumitro, Betty Lukiati, Mumun Nurmilawati, Poppy Rahmatika Primandiri, Ida Rahmawati, S. Sulistiono, and Yayoi Kodama. "Anticancer mechanism of Pisangulin angulata through in silico and development as teaching material." Biosfer 12, no. 1 (April 29, 2019): 45–57. http://dx.doi.org/10.21009/biosferjpb.v12n1.45-57.

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This study aims to reveal the anticancer mechanism of the bioactive compound of Pisangulin angulata and to assess the feasibility of that results as teaching material. This research includes descriptive explorations. In the first stage, an in silico analysis was performed by molecular docking method between physalin compounds and GLI1 protein. The second steps of this study aim to develop teaching materials based research using the Analysis, Reorganizing, Piloting Class, and Evaluating (ARPE models). Feasibility test was carried out by experts and practitioners. Think Pair Share was used in th
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Yang, Dong Bo, Xing Kai Meng, Xia Zhang, and Jing Jing Tian. "Research on the Correlation between Biodiesel's Composition and Physical & Chemical Properties." Applied Mechanics and Materials 737 (March 2015): 65–70. http://dx.doi.org/10.4028/www.scientific.net/amm.737.65.

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Biodiesel's composition has a significant effect on biodiesel’s main physical and chemical properties. Through the test and analysis of the composition and the physical & chemical properties of 5 types of biodiesel, this paper uses linear regression model and least square method to conduct a research on the correlation between biodiesel's physical and chemical properties such as density, cold filter plugging point (CFPP), cetane number and kinematic viscosity, biodiesel's FAME content and the number of double bonds in its UFAME, and establishes correlation functions for relevant indexes, p
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Sari, Novieta, Suandi Sidauruk, Ruli Meiliawati, and Anggi Ristiyana Puspita Sari. "The Difficulties of X Grade High School Students in Palangka Raya City Academic Year of 2018/2019 in Understanding Chemical Bond Concept using Two-Tier Multiple Choice." GAMAPROIONUKLEUS 1, no. 2 (November 30, 2020): 135–48. http://dx.doi.org/10.37304/jpmipa.v1i2.3686.

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The concept of chemical bonds is one of the concepts that students are less familiar with, so there is a need for a diagnostic test to determine students' difficulty. This study aims to describe students' difficulties in understanding the concept of chemical bonds using two-tier multiple-choice which includes the following sub: (1) stable electron configuration, (2) valence electrons, (3) ionic bonds, (4) covalent bonds, and (5) metal bonds. The subjects of this study were students of class X MIA from SMA Negeri 1 Palangka Raya, SMA Negeri 3 Palangka Raya, and SMA Negeri 4 Palangka Raya with a
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Pumera, Martin, and Zdeněk Sofer. "Towards stoichiometric analogues of graphene: graphane, fluorographene, graphol, graphene acid and others." Chemical Society Reviews 46, no. 15 (2017): 4450–63. http://dx.doi.org/10.1039/c7cs00215g.

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Inaltekin, Tufan, Hakan Akcay, and Mehmet Kürşat Duru. "Examination of Pre-Service Science Teachers' Model Based-Content Knowledge and Knowledge of Students’ Understanding on Chemical Bonds." International Journal of Research in Education and Science 9, no. 1 (February 13, 2023): 17–54. http://dx.doi.org/10.46328/ijres.3084.

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This study aims to examine pre-service science teachers' (PSTs') model-based (MB) content knowledge (CK) and knowledge of students' understanding (KSU) of chemical bonds. The participants of the study consist of 229 senior pre service science teachers. The study is a case study from qualitative research designs. The data of the study were collected by using the "Chemical Bonds Model Knowledge Test (CBMKT)". The obtained data were analyzed using the "Model Based-Content Knowledge Rubric (MB-CK Rubric)" and "Model Based-Knowledge of Students' Understanding Rubric (MB-KSU Rubric)". The findings s
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Rozprawy doktorskie na temat "Chemical bonds research"

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Emseis, Paul, University of Western Sydney, of Science Technology and Environment College, and of Science Food and Horticulture School. "Non-classical bonding in chiral metal complexes." THESIS_CSTE_SFH_Emseis_P.xml, 2003. http://handle.uws.edu.au:8081/1959.7/557.

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Intramolecular non-covalent interactions between aromatic ligands in chiral Ru(II) and Co(III) complexes have been investigated in this study. Several investigations were carried out and findings given. The results of the study, which demonstrate the significance of non-covalent interactions involving aromatic residues to the determination of the molecular conformation, serve to highlight the suitability of simple chiral metal complexes to act as models for interactions<br>Doctor of Philosophy (PhD)
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Emseis, Paul. "Non-classical bonding in chiral metal complexes." Thesis, View thesis, 2003. http://handle.uws.edu.au:8081/1959.7/557.

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Intramolecular non-covalent interactions between aromatic ligands in chiral Ru(II) and Co(III) complexes have been investigated in this study. Several investigations were carried out and findings given. The results of the study, which demonstrate the significance of non-covalent interactions involving aromatic residues to the determination of the molecular conformation, serve to highlight the suitability of simple chiral metal complexes to act as models for interactions
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Nguyen, Thi Ai Nhung, Thi Phuong Loan Huynh, and Van Tat Pham. "Quantum chemical investigation for structures and bonding analysis of molybdenum tetracarbonyl complexes with N-heterocyclic carbene and analogues: helpful information for plant biology research: Research article." Technische Universität Dresden, 2014. https://tud.qucosa.de/id/qucosa%3A29085.

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Quantum chemical calculations at the gradient-corrected (BP86) density-functional calculations with various basis sets (SVP, TZVPP) have been carried out for Mo(CO)4 complexes of Nheterocyclic carbene and analogues-NHEMe (called tetrylenes) with E = C, Si, Ge, Sn, Pb. The equilibrium structures of complexes [Mo(CO)4-NHEMe] (Mo4-NHEMe) exhibit an interesting trend which the lightest adduct Mo4-NHCMe has a trigonal bipyramidal coordination mode where the ligand NHCMe occupies an equatorial position. In contrast, the heavier species from Mo4-NHSiMe to Mo4-NHPbMe possess a square pyramidal structu
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Nguyen, Thi Ai Nhung, Thi Phuong Loan Huynh, and Van Tat Pham. "Quantum chemical investigation for structures and bonding analysis of molybdenum tetracarbonyl complexes with N-heterocyclic carbene and analogues: helpful information for plant biology research." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-190465.

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Quantum chemical calculations at the gradient-corrected (BP86) density-functional calculations with various basis sets (SVP, TZVPP) have been carried out for Mo(CO)4 complexes of Nheterocyclic carbene and analogues-NHEMe (called tetrylenes) with E = C, Si, Ge, Sn, Pb. The equilibrium structures of complexes [Mo(CO)4-NHEMe] (Mo4-NHEMe) exhibit an interesting trend which the lightest adduct Mo4-NHCMe has a trigonal bipyramidal coordination mode where the ligand NHCMe occupies an equatorial position. In contrast, the heavier species from Mo4-NHSiMe to Mo4-NHPbMe possess a square pyramidal structu
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Ransdell, Anthony S. "Investigating the Biosynthetic Pathways to Polyacetylenic Natural Products in Fistulina hepatica and Echinacea purpurea." 2013. http://hdl.handle.net/1805/3442.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>Polyacetylenic natural products, compounds containing multiple carbon-carbon triple bonds, have been found in a large collection of organisms. Radiochemical tracer studies have indicated that these bioactive metabolites are synthesized from fatty acid precursors through a series of uncharacterized desaturation and acetylenation steps. To date, there are three main pathways believed to be involved in acetylenic natural product biosynthesis. However, it is apparent that the crepenynic acid pathway is the origin of a vast majority of
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Curtis, Courtney Lee. "Wnt signaling in zebrafish fin regeneration : chemical biology using a GSK3β inhibitor". Thesis, 2014. http://hdl.handle.net/1805/4835.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>Bone growth can be impaired due to disease, such as osteoporosis. Currently, intermittent parathyroid hormone (PTH) treatment is the only approved therapy in the United States for anabolic bone growth in osteoporosis patients. The anabolic effects of PTH treatment are due, at least in part, to modulation of the Wnt/β-catenin pathway. Activation of the Wnt/ β-catenin pathway using a small molecule inhibitor of GSK3β was previously shown to increase markers of bone formation in vitro. Our study utilized a zebrafish model system to st
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Książki na temat "Chemical bonds research"

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Campbell, J. N. Bonds That Tie: Chemical Heritage and the Rise of Cannabis Research. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60023-5.

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P, Desvergne J., and Czarnik Anthony W, eds. Chemosensors of ion and molecule recognition: [proceedings of the NATO Advanced Research Workshop on Chemosensors of Ion and Molecule Recognition, Bonas, France, August 31-September 4, 1996]. Dordrecht: Kluwer Academic, 1997.

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Bonds That Tie: Chemical Heritage and the Rise of Cannabis Research. Springer International Publishing AG, 2020.

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Pacheco, Leonardo Lessa, and Ivoni Freitas-Reis. Gilbert Lewis e a delicada tessitura da teoria do par compartilhado. Brazil Publishing, 2020. http://dx.doi.org/10.31012/978-65-5861-092-2.

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This paper presents the results of a research that explored the context and intense dedication of the American chemist Gilbert Newton Lewis, aiming to investigate the consolidation of the shared pair theory that justified the formation of chemical bonds in the molecules from the elucidation of the atom. which we risk calling the atomic model. Original works by the twentieth century author were analyzed, specifically the article published in 1916, The Atom and the Molecule, and the 1923 book, Valence and the Structure of Atoms and Molecules. It was also analyzed periodical articles by scientist
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Bond Orders And Energy Components Extracting Chemical Information From Molecular Wave Functions. CRC Press, 2010.

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Skiba, Grzegorz. Fizjologiczne, żywieniowe i genetyczne uwarunkowania właściwości kości rosnących świń. The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 2020. http://dx.doi.org/10.22358/mono_gs_2020.

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Bones are multifunctional passive organs of movement that supports soft tissue and directly attached muscles. They also protect internal organs and are a reserve of calcium, phosphorus and magnesium. Each bone is covered with periosteum, and the adjacent bone surfaces are covered by articular cartilage. Histologically, the bone is an organ composed of many different tissues. The main component is bone tissue (cortical and spongy) composed of a set of bone cells and intercellular substance (mineral and organic), it also contains fat, hematopoietic (bone marrow) and cartilaginous tissue. Bones a
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Jancura, Daniel, and Erik Sedlák. Bioenergetika. Univerzita Pavla Jozefa Šafárika, Vydavateľstvo ŠafárikPress, 2021. http://dx.doi.org/10.33542/be2021-0022-6.

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Prekladaný vysokoškolský učebný text „Bioenergetika“ by mal slúžiť ako úvod do problematiky štúdia v oblasti bioenergetiky. Táto vedná oblast je v súčasnosti vysoko aktuálna, pretože výsledky získané bioenergetickým výskumom v uplynulých rokoch zreteľne ukazujú, že bioenergetické procesy prebiehajúce v živých systémoch neslúžia “len” na transformáciu energie, ale ovplyvňujú aj priebeh procesov ako sú apoptóza, starnutie, vznik a rozvoj mnohých ochorení (predovšetkým neurodegeneratívnych). Tieto skutočnosti jednoznačne naznačujú potrebu existencie kvalitných učebných textov, ktoré by prijateľný
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Części książek na temat "Chemical bonds research"

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Liang, Kaixiang, Jinyu Wei, Song Wang, Mohan Chen, and Siyuan Zhang. "Organic chemistry retrosynthesis strategies, research on basic rules of breaking bonds and fine tuning." In Energy Revolution and Chemical Research, 302–13. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003332657-44.

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Saidin, Nor Farhah, Noor Dayana Abd Halim, and Noraffandy Yahaya. "Designing Mobile Augmented Reality (MAR) for Learning Chemical Bonds." In Proceedings of the 2nd International Colloquium of Art and Design Education Research (i-CADER 2015), 367–77. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0237-3_37.

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Tang, Ao-Qing, and Ji-Qing Xu. "A Chemical Bond Theory of Transition-Metal-Dinitrogen Complexes." In The Nitrogen Fixation and its Research in China, 31–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-662-10385-2_2.

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R. Chandraratne, Meegalla, and Asfaw G. Daful. "Recent Advances in Thermochemical Conversion of Biomass." In Recent Perspectives in Pyrolysis Research. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.100060.

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The chapter focuses on recent trends of biomass conversion into valuable energy, chemicals, gaseous and liquid fuels. Biomass is presently the largest source of renewable energy and the primary bioenergy resource in the world. A comprehensive discussion on different types, sources and compositions of biomass is presented. The most abundant biomass on the earth is lignocellulose and it represents a major carbon source for chemical compounds and biofuels. The chapter presents a thorough review of lignocellulosic biomass and the importance of biomass as a renewable source. It then reviews biomass classification and composition. It introduces the analysis of biomass feedstock. Biomass is converted to energy, chemicals and clean fuels using various conversion techniques such as thermochemical, chemical and biochemical. The chapter provides a thorough examination of thermochemical conversion processes that use high temperatures to break down the bonds of organic matter. It briefly introduces combustion and gasification, followed by a comprehensive review of different pyrolysis techniques.
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Chatterjee, Shaona. "Effects of Oriented External Field in Organic Reaction." In Modern Approaches in Chemical and Biological Sciences, 43–50. Lincoln University College, Malaysia, 2022. http://dx.doi.org/10.31674/book.2022macbs.006.

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In this chapter, the improvement of the kinetics and thermodynamics of chemical reactions will be reviewed, which have a crucial role in the applied oriented external electric field (OEEF). Also, it is studied that OEEF has catalytic activity in some organic reaction mechanisms and the ability to cleavage hemolytic bonds in a heterolytic way. The use of the Nitroxide radical in the presence of time-dependent fluorescence spectroscopy, the use of Radical mediated Polymerization, and so on are also being investigated. Again, OEEF has a budding area of research, waiting for eventual blossom. In this context, the chemical bond breaking, bond dissociation energy, product selectivity, and how OEEF catalyzes the reaction will be discussed, as well as an overview of fluorescent spectroscopy.
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Ganghoffer, Jean-François. "Mechanical Models of Cell Adhesion Incorporating Nonlinear Behavior and Stochastic Rupture of the Bonds." In Handbook of Research on Computational and Systems Biology, 599–627. IGI Global, 2011. http://dx.doi.org/10.4018/978-1-60960-491-2.ch027.

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The rolling of a single biological cell is analysed using modelling of the local kinetics of successive attachment and detachment of bonds occurring at the interface between a single cell and the wall of an ECM (extracellular matrix). Those kinetics correspond to a succession of creations and ruptures of ligand-receptor molecular connections under the combined effects of mechanical, physical (both specific and non-specific), and chemical external interactions. A three-dimensional model of the interfacial molecular rupture and adhesion kinetic events is developed in the present contribution. From a mechanical point of view, this chapter works under the assumption that the cell-wall interface is composed of two elastic shells, namely the wall and the cell membrane, linked by rheological elements representing the molecular bonds. Both the time and space fluctuations of several parameters related to the mutual affinity of ligands and receptors are described by stochastic field theory; especially, the individual rupture limits of the bonds are modelled in Fourier space from the spectral distribution of power. The bonds are modelled as macromolecular chains undergoing a nonlinear elastic deformation according to the commonly used freely joined chains model, while the cell membrane facing the ECM wall is modelled as a linear elastic plate. The cell itself is represented by an equivalent constant rigidity. Numerical simulations predict the sequence of broken bonds, as well as the newly established connections on the ‘adhesive part’ of the interface. The interplay between adhesion and rupture entails a rolling phenomenon. In the last part of this chapter, a model of the deformation induced by the random fluctuation of the protrusion force resulting from the variation of affinity with chemiotactic sources is calculated, using stochastic finite element methods in combination with the theory of Gaussian random variables.
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Rajamanickam, Karthika, Jayanthi Balakrishnan, Selvankumar Thangaswamy, and Govarthanan Muthusamy. "Microbial Enzymes and Their Mechanisms in the Bioremediation of Pollutants." In Research Anthology on Emerging Techniques in Environmental Remediation, 91–108. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-6684-3714-8.ch005.

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Bioremediation is the process, with the help of microbes or their enzymes, to remove the pollutants present in the environment and change them into non-toxic compounds. Microbial enzymes have a wide range of metabolic activities and are involved in the transformation of pollutants. Enzymes like oxidoreductase, hydrolases, monooxygenase, dioxygenase, methyltransferases, and lipases are involved in the degradation process. Oxidoreductase catalyzes the transfer of electron and proton from the reduced organic substrate to another chemical compound from donor to acceptor. Monooxygenase and dioxygenases are the transferring oxygen from molecular oxygen (O2) utilizing FAD/NADH/NADPH as a co-substrate in this process. Lyases catalyze the cleavage of the bonds by elimination, leaving double bonds. Peroxidases catalyze the oxidation of lignin and other phenolic compounds at the expense of hydrogen peroxide (H2O2) in the presence of a mediator. Lipases also involve catalyzing the hydrolysis of triacylglycerols to glycerol and free fatty acids.
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Ali, Nagia Farag. "Green Strategy for Production of Antimicrobial Textiles." In Handbook of Research on Uncovering New Methods for Ecosystem Management through Bioremediation, 346–66. IGI Global, 2015. http://dx.doi.org/10.4018/978-1-4666-8682-3.ch014.

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The article deals with the measurement of the antimicrobial activity for some natural dyes against various types of microbes as (Escherichia coli, Staphylococcus aureus and Pseudomons aeruginosa), Using nano materials for some metals or its oxides as titanium oxide for treatment of fabrics before dyeing, these materials were fixed on the fiber by chemical bonds to acquire new properties as antimicrobial activities against bacteria and fungi and also to protect from ultra violet rays. Using a traditional and microwave heating for extraction of dyes and dyeing methods because microwave heating is a more effective method than traditional heating. Other additional features are that, they are cheaper, more economical, eco-friendly, and produce a higher dye uptake as compared to conventional techniques, environmentally friendly pre-treatment by chitosan before dyeing in order to obtain dyed fabric with high quality and more protected against microbes. Application of antimicrobial agents in the development in the textiles as chitosan, qutenary ammonium salt and neem.
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Dewangan, Y. "Polysaccharide as Green Corrosion Inhibitor." In Sustainable Corrosion Inhibitors, 70–100. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901496-4.

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The carbohydrates associated with polysaccharide glycosidic bonds are tightly chained, usually linear and highly branched complex molecules. Their structure mainly consists of hydroxyl groups in the form of functional groups, in which an oxygen heterogeneous atom is present. Some polysaccharides have hetero atoms. Nitrogen and Sulfur in addition to oxygen, which have unshared electron pairs. Hetero atoms easily share their electron pair to the vacant d orbitals of the metal ion and prevent the metal from corrosion. Polysaccharides are biodegradable, renewable, inexpensive and environment friendly due to which they are easily used as corrosion inhibitors. The present study mentions some major research work in which polysaccharides are used as corrosion inhibitors. Their mixed type nature has been reported in most research papers, and in the case of steel metal, they mainly follow the Langmuir adsorption isotherm. Chemical (gravimetric analysis) and electrochemical (EIS &amp; PDP) studies are frequently used for the corrosion inhibition study. Some of the current research papers have also used computational or theoretical studies such as quantum chemical study and MD simulation. At the end of this book chapter, a discussion is also given regarding further research and direction related to the topic.
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Yuzevych, Volodymyr, and Bohdan Koman. "MATHEMATICAL AND COMPUTER MODELING OF INTERPHASE INTERACTION IN HETEROGENEOUS SOLID STRUCTURES." In Theoretical and practical aspects of the development of modern scientific research. Publishing House “Baltija Publishing”, 2022. http://dx.doi.org/10.30525/978-9934-26-195-4-14.

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The aim of this work was to develop a mathematical model and computer modelling of interphase interaction, mechanical stresses and adhesion mechanisms between mechanically inhomogeneous media (different phases). Methodology. For the system "metal – dielectric" we use a macroscopic approach, which corresponds to the ratio of non-equilibrium thermodynamics and physics of solid surfaces. Let’s consider the system of equations and boundary conditions for describing the change of energy parameters (σh, γ), which characterize the thermodynamic state of the system of contacting bodies. Method for calculating the main energy parameters (interfacial energy – γm, interfacial tension – σm, work of adhesion – Aadand energy of adhesive bonds – γad) in complex solid-state structures containing boundary phases is proposed. Based on the basic equations of nonequilibrium thermodynamics and surface physics a mathematical model of the interphase boundary is designed. A comparative analysis of the features of interphase interaction in the systems "metal-metal", "metal-semiconductor" and "metal-dielectric" on the example of interacting systems "Cu – Zn", "Cu – Si" and "Cu – quartz". It is established that the most sensitive parameter in the analysis of interphase interactions is the interphase energy γm.A model of mechanical stress formation in the "condensate-substrate" system is proposed. In particular, internal stresses in metal condensates are caused by changes in the value of interphase energy parameters (primarily interfacial tension) in the substrate-nanocondensate system and due to phase-forming processes accompanied by changes in surface energy in the condensate volume during its formation. The resulting internal stresses in metal condensates are an integral result of the action of statistically distributed on the plane of the film local stresses. Such phenomena are due to the anisotropy of the energy parameters of the interphase interaction in the condensate plane. Behavior analysis of energy and adhesion parameters can be used to predict the results of interphase interaction in order to select contact pairs to create thermodynamically stable structures with predicted values of energy parameters of interphase interaction, a certain type of chemical bond and a given level of mechanical stresses.
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Streszczenia konferencji na temat "Chemical bonds research"

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Ahliha, A. H., F. Nurosyid, and A. Supriyanto. "The chemical bonds effect of Amaranthus hybridus L. and Dracaena Angustifolia on TiO2 as photo-sensitizer for dye-sensitized solar Cells (DSSC)." In THE 4TH INTERNATIONAL CONFERENCE ON RESEARCH, IMPLEMENTATION, AND EDUCATION OF MATHEMATICS AND SCIENCE (4TH ICRIEMS): Research and Education for Developing Scientific Attitude in Sciences And Mathematics. Author(s), 2017. http://dx.doi.org/10.1063/1.4995165.

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Mathew, Shilu M., Fatiha Benslimane, Asmaa A. Althani, and Hadi M. Yassine. "Virtual Screening of Anti-Viral Drugs and Natural Compounds for Potential Inhibition of the Novel SARS-Cov-2 Spike Receptor-Binding Domain." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0281.

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Background: The spike (S) protein of SARS-CoV-2 harbors the receptor-binding domain (RBD) that mediates the virus's entry to host cells. The aim of this study was to identify novel inhibitors that target the RBD domain of S-protein through computational screening of chemical and natural compounds. Method: The S protein was modelled from the recently resolved and the previously described SARS-CoV protein structures. CLC Drug Discovery was used to computationally screen for potential inhibitory effects of currently prescribed drugs (n= 22) anti-viral natural drugs (n=100), natural compounds (n=
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Waller, Michael G., and Thomas A. Trabold. "Review of Microbial Fuel Cells for Wastewater Treatment: Large-Scale Applications, Future Needs and Current Research Gaps." In ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology collocated with the ASME 2013 Heat Transfer Summer Conference and the ASME 2013 7th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fuelcell2013-18185.

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There is growing interest in innovative waste water treatment technologies that can utilize the inherent energy-producing potential of organic waste. A microbial fuel cell (MFC) is a type of bioreactor that produces electricity by converting energy in the chemical bonds of organic material, through a catalytic reaction of microorganisms under anaerobic conditions. MFCs provide a promising low cost, highly efficient, and renewable energy-producing alternative to conventional wastewater treatments. MFC technology at the laboratory scale has advanced to the point where chemical oxygen demand (COD
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Fujiwara, Kenichi, Tomozou Sasaki, Yuzou Saita, A. Kamei, and T. Fukui. "Development of Fluorination Decontamination Technique for Uranium Bearing Wastes." In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4527.

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A matrix of uranium bearing wastes (sludge, incineration ashes) bonds uranium tightly, and some wastes (narrow pipes, filters, etc.) have complicated shapes. This research was intended to achieve the assumed clearance level (0.3Bq/g) and to reduce the amount of secondary wastes. One of the uranium decontamination processes is the fluorination decontamination process in which CIF3 is used as a decontamination agent to fluorinate uranium bearing wastes to gaseous UF6 which can be recovered by cold or chemical trapping. The research test variables were decontamination temperature, decontamination
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Nascimento, Marcelo Gouveia, Gabriel Nicolas Garcia Alves, Marco Antonio Bueno Filho, and Rodrigo Luiz Oliveira Rodrigues Cunha. "A FLASH OF CONSTRUCTION SCHEMES COLLECTIVE IN THE CLASSROOM INVOLVING THE FIELD STRUCTURAL MOLECULAR." In 1st International Baltic Symposium on Science and Technology Education. Scientia Socialis Ltd., 2015. http://dx.doi.org/10.33225/balticste/2015.74.

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This study aims to access information about how college students collectively build action schemes in structural molecular level. The research had two situations presented to six students and Bachelor Degree in Chemistry from the Federal University of ABC involving content on Liquid Chromatography. The speeches of students organized in groups were recorded in audiovisual and subjected to Textual Analysis Discourse and grounded in the theory of Conceptual Fields (Vergnaud, 1996). The results were assessed, evidence of the collective construction of a scheme characterized by relevant conceptual
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Sugiyama, Takeshi, Alison J. Hobro, Takayuki Umakoshi, Prabhat Verma, and Nicholas I. Smith. "Raman spectroscopy of macrophage uptake and cellular response during exposure to dietary lipids." In JSAP-OSA Joint Symposia. Washington, D.C.: Optica Publishing Group, 2019. http://dx.doi.org/10.1364/jsap.2019.18p_e208_8.

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The increase in patients suffering from ‘lifestyle diseases such as coronary heart disease, atherosclerosis, diabetes and gout has been associated with the amount and nature of fats in our diets. In many of these diseases, macrophages and their role in lipid metabolism greatly impacts the development and severity of the disease. Fatty acids, which are a sub-class of lipids, have many different types depending on the number of carbon atoms and the presence of carbon double bonds (i.e. saturated and unsaturated fatty acids). The chemical properties of each fatty acid depend on the number of carb
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Xinglei, Hu. "Experiment and Mechanism Study on the Effect of Coal Ash on the Capture of Alkali Metals in Zhundong Coal." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3570.

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A large number of Xinjiang Zhundong coal was found in China. Its high content of alkali metals can cause serious fouling/slagging problems which may lead to economic losses. It is significant to control the release of alkali metals from Zhundong coal during the combustion. Si-Al additives are used to capture Na released from the Zhundong coal. In this work, a combination of experimental research and quantum chemical calculation was used to study the effect of coal ash on the capture of alkali metal in Zhundong high alkali Coal and the related mineral evolution mechanism during melting processe
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Taheri, B., A. Munoz F., R. C. Powell, D. H. Blackburn, and D. C. Cranmer. "Effect of structure and composition of the thermal lensing and permanent laser-induced refractive-index changes in glasses." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.mc3.

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We have previously reported the ability to produce permanent refractive-index gratings in rare earth-doped glasses through the creation of laser-induced local structural changes and have shown how thermal lensing affects the grating properties. We present here the extension of this research to the investigation of the effects of glass structure and composition on thermal lensing and on the ability to produce permanent gratings. New types of lithium borate, lead and magnesium silicates and germanates, and a lead phosphate glass were investigated. The results of four-wave mixing experiments show
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SNYDER, ALEXANDER D., ZACHARY J. PHILLIPS, and JASON F. PATRICK. "SELF-HEALING OF WOVEN COMPOSITE LAMINATES VIA IN SITU THERMAL REMENDING." In Thirty-sixth Technical Conference. Destech Publications, Inc., 2021. http://dx.doi.org/10.12783/asc36/35785.

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Fiber-reinforced polymer composites are attractive structural materials due to their high specific strength/stiffness and excellent corrosion resistance. However, the lack of through-thickness reinforcement in laminated composites creates inherent susceptibility to fiber-matrix debonding, i.e., interlaminar delamination. This internal damage mode has proven difficult to detect and nearly impossible to repair via conventional methods, and therefore, remains a significant factor limiting the reliability of composite laminates in lightweight structures. Thus, novel approaches for mitigation (e.g.
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Jia, Zhanzhan, Ravish Rawal, Jon Isaacs, and Sia Nemat-Nasser. "Tailored Polyurea-Glass Interfaces and the Characterization by the Single-Fiber Fragmentation." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-63736.

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Polyurea is an elastomer that has been intensively researched due to its excellent thermal and mechanical properties. Polyurea based composite material has recently become a research interest to further explore what this polymer has to offer. In order to better understand the overall static or dynamic mechanical properties of the polyurea based composites, how to tailor and characterize the polyurea-filler interface has become a crucial problem. This study focuses on one of the filler materials, glass. Three types of polyurea-glass interfaces are studied by using silane reagents that have simi
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Raporty organizacyjne na temat "Chemical bonds research"

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Rafaeli, Ada, Wendell Roelofs, and Anat Zada Byers. Identification and gene regulation of the desaturase enzymes involved in sex-pheromone biosynthesis of pest moths infesting grain. United States Department of Agriculture, March 2008. http://dx.doi.org/10.32747/2008.7613880.bard.

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The original objectives of the approved proposal included: 1. Establishment of the biosynthetic pathways for pheromone production using labeled precursors and GC-MS. 2. The elucidation of a circadian regulation of key enzymes in the biosynthetic pathway. 3. The identification, characterization and confirmation of functional expression of the delta-desaturases. 4. The identification of gene regulatory processes involved in the expression of the key enzymes in the biosynthetic pathway. Background to the topic: Moths constitute one of the major groups of pest insects in agriculture and their repr
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