نتایج جستجو برای: physicochemical phenomena

تعداد نتایج: 149336  

Understanding the microscopic dispersion and aggregation of nanoparticles at nanoscale media has become an important challenge during the last decades. Nanoscale modeling techniques are the important tools to tackle many of the complex problems faced by engineers and scientists. Making progress in the investigations at nanoscale whether experimentally or computationally has helped understand th...

Abdul Karim Shah Heydar Mohammad Jafar Saliqeh

Migration as a human phenomenon has some consequences and repercussions. One of these effects is crime commitment and inducing disturbance in land and national security in immigrants' residence country, in other word, international migration, especially illegal migration, have different penal-security effects. Finding reason that the permeability of borders and increasing illegal traffic, drug ...

2012
Fabienne Poncin-Epaillard Tjasa Vrlinic Dominique Debarnot Miran Mozetic Arnaud Coudreuse Gilbert Legeay Benaïssa El Moualij Willy Zorzi

This review describes different strategies of surface elaboration for a better control of biomolecule adsorption. After a brief description of the fundamental interactions between surfaces and biomolecules, various routes of surface elaboration are presented dealing with the attachment of functional groups mostly thanks to plasma techniques, with the grafting to and from methods, and with the a...

2017
Sergio Trasatti SERGIO TRASATTI

The metal-water interaction strength (»hydrophilicity«) plays a major role in deterrnining both the structure of the interfacial region and the energetics of adsorption phenomena. A »hydrophilicity« scale can be established on the basis of a phenomenological approach for a series of sp-metals. It is shown that recent results for sd-metals (Cu, Ag, Au) cannot be organized in the same picture. Th...

The gas-liquid membrane contactor (GLMC) is a promising alternative gas absorption/desorption configuration for effective carbon dioxide (CO2 ) capture. The physicochemical properties of membranes may synergistically affect GLMC performances, especially during the long-term operations. In this work, commercial polypropylene (PP) and polyvinylidene fluoride (PVDF) hollow fiber (HF) membranes wer...

Journal: :Applied spectroscopy 2004
M Pérez-Méndez R Marsal-Berenguel S Sanchez-Cortes

A Raman study of the adsorption of thermotropic cholesteric liquid crystal polyester PTOBDME ([C(34)H(36)O(8)](n)) on Ag surfaces is presented in this work. The affinity and adsorption mechanism of this polymer was tested on Ag metal colloids and on Ag films obtained by direct immobilization of the colloidal nanoparticles. We have first studied the structure of PTOBDME suspended in several solv...

2003
E. HARDING RONALD R. S. FRASER

Tomato bushy stunt virus particles have previously been physically and chemically well characterized. Different strains, however, are known to have different host plants and symptoms, and they can be distinguished serologically. In an attempt to correlate this behavior with physicochemical properties, we have performed a comparative study on isolates of four of the main variants of this virus (...

2018
Jacques Loeb Donald Fleming Edmund Beecher Wilson

Jacques Loeb [3] published The Mechanistic Conception of Life in 1912. Loeb?s goal for the book was to further disseminate his explanations of organic processes?such as embryonic development and organisms? orientations to their environments?which relied on physics and chemistry. Loeb also wanted to provide an alternative explanatory framework to vitalism [4] and what he called romantic evolutio...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 1990
H Gruler K Franke

It is shown that chemotaxis, galvanotaxis, galvanotropism, etc. are functions of cells having a goal-seeking system. Even when the involved physicochemical signals are unknown, the cellular system can be treated phenomenologically like an automatic controller having a closed-loop feedback system. The model is verified by means of galvanotaxis and chemotaxis data of human granulocytes. The galva...

2002
Richard Behrens

with HMX, performed with a simultaneous thermogravimetric modulated beam mass spectrometry (STMBMS) apparatus, and have created a reaction cycle that captures the physical processes and chemical reactions that control its decomposition. The reaction cycle is based on 9 different physical processes and 7 general chemical reactions that play a significant role in controlling the decomposition of ...

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