Xem 1-20 trên 458 kết quả The kinetic
  • Glutathionylspermidine is an intermediate formed in the biosynthesis of trypanothione, an essential metabolite in defence against chemical and oxi-dative stress in the Kinetoplastida. The kinetic mechanism for glutathionyl-spermidine synthetase (EC 6.3.1.8) from Crithidia fasciculata (CfGspS) obeys a rapid equilibrium random ter-ter model with kinetic constants KGSH= 609lm, KSpd= 157lmand KATP= 215lm.

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  • Tham khảo tài liệu 'báo cáo hóa học: " atomic force microscopy investigation of the kinetic growth mechanisms of sputtered nanostructured au film on mica: towards a nanoscale morphology control"', luận văn - báo cáo phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Atomic force microscopy investigation of the kinetic growth mechanisms of sputtered nanostructured Au film on mica: towards a nanoscale morphology control

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  • Tuyển tập các báo cáo nghiên cứu khoa học trên tạp chí khoa học vật lý quốc tế đề tài: The Kinetics and Mechanism of the Core-shell Styrene-butyl Acrylate Polymerisation

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Atomic Force Microscopy Study of the Kinetic Roughening in Nanostructured Gold Films on SiO2

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  • Within the framework of the Walecka model (QHD-I)[1] the renormalized effective Dirac equation and the kinetic equation for fermion are presented. In fact, the fermion propagator in the medium is dramatically different from that in the vacuum. The main feature is the treating of the fermion distribution in non equilibrium, which depends on the interaction rate involving temperature.

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  • Although the chemical nature of the catalytic mechanism of the serine pro-tease a-chymotrypsin (a-CT) is largely understood, the influence of the enzyme’s structural dynamics on its catalysis remains uncertain. Here we investigate whether a-CT’s structural dynamics directly influence the kinet-ics of enzyme catalysis.

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  • Chemical Kinetics The area of chemistry that concerns reaction rates. .Reaction Rate Change in concentration (conc) of a reactant or product per unit time. conc of A at time t2 − conc of A at time t1 Rate = t2 − t1 ∆A =

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  • We live in the age of biology—the human and many other organisms’ genomes have been sequenced and we are starting to understand the function of the metabolic machinery responsible for life on our planet. Thousands of new genes have been discovered, many of these coding for enzymes of yet unknown function. Understanding the kinetic behavior of an enzyme provides clues to its possible physiological role. From a biotechnological point of view, knowledge of the catalytic properties of an enzyme is required for the design of immobilized enzyme-based industrial processes.

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  • This first part is concerned with processes in which the kinetic behaviour of a gaseous phase is rate-determining. The range of processes includes some which are carried out in vacuum systems in which Knudsen or free evaporation occurs from a condensed phase, to transport reactions where a chemical reaction occurs between a solid and the gaseous phase to produce molecular species containing some or all of the elements occurring in the solid phase.

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  • Comprehensive manual embracing essentially all the classical and modern areas of chemical kinetics. Provides details of modern applications in chemistry, technology and biochemistry. Special sections of the book treat subjects not covered sufficiently in other manuals, including: modern methods of experimental determination of rate constants of reactions including laser pico- and femtochemistry, magnetochemistry, and ESR; and descriptions of advanced theories of elementary chemical processes.

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  • A- Định Nghĩa: Run là một cử động không tự ý của bất kỳ bộ phận nào trên cơ thể (ngay cả đầu và tiếng nói cũng có thể bị ảnh hưởng). Run thường được nhận thấy rõ nhất là ở tay. Có 3 loại run chính như sau 1. Run lúc nghỉ ngơi hoặc run “tĩnh” (static tremors) xảy ra khi tay hoặc một bộ phận nào đó đang trong giai đoạn nghỉ ngơi. 2.

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  • enzymes are powerful biological catalysts that are essential for the proper maintenance and propagation of any organism. these properties make them excellent candidates as therapeutic targets to combat diseases of either genetic or pathogenic origin. in this regard, one goal of molecular medicine is to develop and implement effective agents that can modulate the activity of various enzymes involved in essential biological pathways. the process of developing and characterizing these small molecules, i.e., rational drug design, often requires a priori knowledge of the enzyme in question....

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  • The Physical Chemistry In Brief offers a digest of all major formulas, terms and definitions needed for an understanding of the subject. They are illustrated by schematic figures, simple worked-out examples, and a short accompanying text. The concept of the book makes it different from common university or physical chemistry textbooks. In terms of contents, the Physical Chemistry In Brief embraces the fundamental course in physical chemistry as taught at the Institute of Chemical Technology, Prague, i.e.

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  • Petroleum mixtures consist primarily of relatively unreactive complex hydrocarbons covering a wide boiling range. Such mixtures are difficult to separate by most analytical techniques. Therefore, the petroleum industry has for many years played a leading role in the development of chromatographic methods of analysis. Since the last book specifically concerned with chromatographic analysis of petroleum appeared 15 years ago, numerous advances have been made including developments in liquid and supercritical fluid chromatography, ...

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  • This textbook has evolved from part of the first-year graduate curriculum in the Department of Materials Science and Engineering at the Massachusetts Institute of Technology (MIT) . This curriculum includes four required semester-long subjects- “Materials at Equilibrium,” “Mechanical Properties of Materials,” “Electrical, Optical, and Magnetic Properties of Materials,” and “Kinetic Processes in Materials.

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  • From this Chapter we will study thermal properties of matter, that is what means the terms “hot” or “cold”, what is the difference between “heat” and “temparature”, and the laws relative to these concepts. We will know that the thermal phenomena are determined by internal motions of molecules inside a matter. There exists a form of energy which is called thermal energy, or “heat”, which is the total energy of all molecular motions, or internal energy.

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  • Current Flow in an Electrochemical Cell: Thermodynamic arguments permit the feasibility of overall cell reactions to be predicted, but give no information on rates. To understand the latter it is necessary to consider the effects on various parts of the cell of forcing the cell voltage to assume a value different from that of the equilibrium potential Eeq (V) or electromotive force (emf). In the example of Figure 1, the cell contains hydrochloric acid as aqueous electrolyte and it divides into two compartments by a semipermeable membrane.

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  • Nghiên cứu này điều tra ảnh hưởng của nội dung tannin ban đầu (1,8, 2,8, 3,8, 9,8 và 17.8g acid tannic / L) động học của quá trình lên men rượu vang đỏ, sử dụng nấm men cố định trong gel alginate canxi. Kết quả thực nghiệm của chúng tôi cho thấy trong môi trường có hàm lượng tanin cao (9,8 và 17.8g acid tannic / L), mật độ di động tối đa và tốc độ tăng trưởng tối đa cụ thể của các tế bào bất động cao hơn so với những của các tế bào miễn phí....

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  • Marketers have identified urban, low-income African-American and Latino youth as “superconsumers” of soda, candy, and snack products. Many young people report frequent snacking, unstructured meals, and eating “junk food,” such as candy, chips, and soda, for their primary meal. Recent research studying the amount and type of advertising on prime-time television programs oriented to African-American audiences compared to those for general audiences found that far more food commercials appear on shows with large...

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