Concept Of Mol
Mostrando 1-12 de 27 artigos, teses e dissertações.
-
1. La esfera, el mol y la ciudad
Based on the Sloterdijk's concept of sphere, we analyse the protection provided by the malls. Nevertheless, the freedom of choosing in a mall does not have any relation to liberty as it was proposed by John Stuart Mill, neither to the anarcho-individualist one proposed by Henry David Thoreau, nor even to that one proposed by Aldo Leopold, when he praises the
Kriterion: Revista de Filosofia. Publicado em: 2010-06
-
2. O plÃsmon da regiÃo de recobrimento da ligaÃÃo quÃmica como ferramenta para caracterizaÃÃo de materiais
Important issues can be raised about the possibility of relations between macroscopic properties of materials and concepts, introduced recently, of the chemical bond overlap polarizability (PR) and the concept of ionic specific valence (VIE). A proposal in which the overlap region of chemical bond is considered as a âplasmon‐likeâ charge distribution
Publicado em: 2009
-
3. Desenvolvimento de um jogo didático virtual para o aprendizado do conceito de mol / Development of a virtual game for the learning of the concept of mol
A fact verified by teachers involved with Chemistry education is that the concept of mol, extremely important to the teaching of chemistry, makes up an obstacle to the learning process since the referred concept requires some basic knowledge which is not always so well defined in the students\ cognitive structure. In order to attenuate this problem, a softwa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/03/2008
-
4. Desenvolvimento de procedimentos em fluxo para a determinação de Captopril, Dipirona e Paracetamol envolvendo multicomutação e inibição da quimiluminêscencia / Development of procedures in flow injection for the determination of captopril, dipirona and paracetamol involving multicommutation and inhibition of chemiluminescencia
In the present work, analytical procedures were developed using the multicomutação concept and inhibition of the chemilumenescence for the pharmaceuticals determination, such as, captopril, dipirona and paracetamol. For the control of the analysis module and acquisitions of data a microcomputer was used Pentiun 233 MHz equipped with an electronic interface
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/02/2008
-
5. Determinação voltamétrica do herbicida glifosato em águas naturais utilizando eletrodo de cobre
The aim of this work was to investigate the copper electrode behavior in the voltammetric determination of glyphosate. The best conditions for this determination are phosphate buffer 0.05 mol L-1 and pH 7.3, and the peak potential is observed at 187 mV. LD and LQ values are 59 µg L-1 e 196 µg L-1, respectively. A water sample was analysed for glyphosate an
Química Nova. Publicado em: 2007
-
6. "Development of the instrumentation and automatic analytical procedures for spectrophotometric determination of surfactants in waters" / "Desenvolvimento de instrumentação e procedimentos analíticos automáticos para a determinação espectrofotométrica de tensoativos em águas"
"In this work, development of the instrumentation and automatic analytical procedures for spectrophotometric determination of surfactants in waters employing the multicommutation concept were proposed. Aiming to system miniaturization, reduction of reagents consumption and effluents generation, solenoids micro-pump and solenoids pinch valves were used for th
Publicado em: 2006
-
7. Development and application of procedures envelopemend chemiluminescent reactions in flow for determination of analytes of interest in food, pharmaceutical and biochemistry. / Desenvolvimento e aplicação de procedimentos envolvendo reações quimiluminescentes em fluxo para a determinação de analitos de interesse alimentício, farmacêutico e bioquímico.
In this work, analytical flow procedures were developed using multicommutation concept and chemiluminescent detection for the determination of hydrogen peroxide, glucose and cholesterol in food, biochemistry and pharmaceutical samples. A personal computer Pentium 233 MHz equipped with PCL 711S interface was employed to control the flow manifold and data acqu
Publicado em: 2005
-
8. Binding capacity: cooperativity and buffering in biopolymers.
The group of linkage potentials resulting from the energy of a physicochemical system expressed per mol of a reference component, say a polyfunctional macromolecule, leads to the concept of binding capacity. This concept applies equally to both chemical and physical ligands and opens the way to consideration of higher-order linkage relationships. It provides
-
9. Initiation of Bacillus spore germination by hydrostatic pressure: effect of temperature.
Suspensions of Bacillus cereus T, B. subtilis, and B. pumilus spores in water or potassium phosphate buffer were germinated by hydrostatic pressures of between 325 and 975 atm. Kinetics of germination at temperatures within the range of 25 to 44 degrees C were determined, and thermodynamic parameters were calculated. The optimum temperature for germination w
-
10. Early high-affinity neutralizing anti-viral IgG responses without further overall improvements of affinity.
Affinity maturation of IgG antibodies in adaptive immune responses is a well-accepted mechanism to improve effector functions of IgG within 2 weeks to several months of antigen encounter. This concept has been defined mainly for IgG responses against chemically defined haptens. We have evaluated this concept in a viral system and analyzed neutralizing IgG an
-
11. Intermembrane contact affects calcium binding to phospholipid vesicles.
Binding of Ca2+ to liposomes composed of phosphatidylserine (PtdSer) was analyzed by potentiometric titrations. Ca2+ binding to large unilamellar PtdSer vesicles was saturable at a stoichiometry of 1:2 (Ca2+/PtdSer). At approximately 6 X 10(-4) M [Ca2+]free, the binding curve exhibited a discontinuity that can be attributed to the formation of a Ca2+/PtdSer
-
12. Free energy of burying hydrophobic residues in the interface between protein subunits
We have obtained an experimental estimate of the free energy change associated with variations at the interface between protein subunits, a subject that has raised considerable interest since the concept of accessible surface area was introduced by Lee and Richards [Lee, B. & Richards, F. M. (1971) J. Mol. Biol. 55, 379–400]. We determined by analytical ul
The National Academy of Sciences.