نتایج جستجو برای: biological properties
تعداد نتایج: 1287992 فیلتر نتایج به سال:
Nanotechnology could be a very important field of recent research dealing with medical, industrial, environment. Silver nanoparticles are the topics of researchers because of their distinctive properties (size, shape depending optical, antimicrobial, and electrical properties). The synthesis of safe nanoparticles by biological organisms is recommended due to the environmental friendliness and l...
The healing properties of Bazna waters and their therapeutic indications have been well known since the 18(th) century. The objective of the present study was to characterize these waters from physical and biological points of view, and to further analyze the nitrogen compounds, especially NH4+. The following physical parameters of the water were analyzed: density (g/cm(3)), electric resistivit...
Anne-Marie Caminade is Director of Researches at the CNRS since 1997 ( f i rst c lass since 2004) and presently head of the "Dendrimers and Heterochemistry" group at LCC Toulouse. After two Ph.D.s (1984 and 1988) and two Post-docs (IFP-Paris and A. Von Humboldt fellow in Saarbrücken with M. Veith), she entered the CNRS in 1985. She developed several aspects of phosphorus chemistry, including lo...
Single-stranded guanosine-rich oligodeoxyribonucleotides (GROs) have a propensity to form quadruplex structures that are stabilized by G-quartets. In addition to intense speculation about the role of G-quartet formation in vivo, there is considerable interest in the therapeutic potential of quadruplex oligonucleotides as aptamers or non-antisense antiproliferative agents. We previously have des...
let h be a separable hilbert space and let b be the set of bessel sequences in h. by using several interesting results in operator theory we study some topological properties of frames and riesz bases by constructing a banach space structure on b. the convergence of a sequence of elements in b is de_ned and we determine whether important properties of the sequence is preserved under the con...
heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...
Understanding the recent trends in observable changes of the ocean physical and chemical properties is of great importance in order to foresee their future evolution and to quantify the probable contribution of anthropogenic pressure to these changes. For that matter, it is necessary to consider new methods and concepts for the analysis and modelling of ocean properties. In this paper, we intro...
Ligands binding to polymers regulate polymer functions by changing their physical and chemical properties. This ligand regulation plays a key role in many biological processes. We propose here a model to explain the mechanical, thermodynamic, and kinetic properties of the process of binding of small ligands to long biopolymers. These properties can now be measured at the single molecule level u...
Karst ecosystems are fragile and are in many regions degraded by anthropogenic activities. Current management of degraded karst areas focuses on aboveground vegetation succession or recovery and aims at establishing a forest ecosystem. Whether progressive succession of vegetation in karst areas is accompanied by establishment of soil biota is poorly understood. In the present study, soil microb...
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