نتایج جستجو برای: visible

تعداد نتایج: 76201  

Journal: :Chemical communications 2012
Yingpu Bi Hongyan Hu Shuxin Ouyang Gongxuan Lu Junyu Cao Jinhua Ye

Herein, we demonstrate a complex-precipitation strategy for high-yield fabrication of single-crystalline Ag(3)PO(4) sub-microcubes with sharp corners, edges, and smooth surfaces, which exhibit much higher photocatalytic activities and photoelectric conversion properties than spherical Ag(3)PO(4) particles and commercial N-doped TiO(2) under visible light irradiation.

Journal: :The Journal of General Physiology 1961
D. Varjú Lois Edgar M. Delbrück

Sporangiophores of Phycomyces do not grow directly towards a horizontal beam of light, but equilibrate at an angle of about 30 degrees above the horizontal. After describing several related observations, this paper suggests that the dioptric properties of an obliquely illuminated cylindrical lens, illustrated by a dummy cell, as well as a negative geotropic response, play major roles in determi...

Journal: :Chemical communications 2012
Samya Banerjee Puja Prasad Akhtar Hussain Imran Khan Paturu Kondaiah Akhil R Chakravarty

Curcumin (Hcur) as a cellular imaging and PDT agent shows remarkable photocytotoxicity in HeLa cells in visible light of 400-700 nm giving IC(50) = 8.2 ± 0.2 μM and its degradation is arrested on formation of photocytotoxic dipyridophenazine (dppz) complex [VO(cur)(dppz)Cl] (IC(50) = 3.3 ± 0.4 μM), while both are less toxic in the dark.

Journal: :Chemical communications 2011
You Yu Hui Zhang Caihong Zhang Shuxun Cui

Highly stable covalently attached multilayer films were constructed by visible-light irradiation of hydrogen-bonding directed multilayer films of poly(allylamine) and poly(4-vinylphenol).

Journal: :Chemical communications 2012
Luis C Misal Castro Jean-Baptiste Sortais Christophe Darcel

A general and efficient hydrosilylation of imines catalysed by a well defined NHC-carbene cyclopentadienyl iron complex has been developed. Both aldimines and ketimines are converted to the corresponding amines under mild conditions, and under visible light activation.

Journal: :The Journal of organic chemistry 2014
Sameh Helmy Saemi Oh Frank A Leibfarth Craig J Hawker Javier Read de Alaniz

The development of an easily synthesized, modular, and tunable organic photoswitch that responds to visible light has been a long-standing pursuit. Herein we provide a detailed account of the design and synthesis of a new class of photochromes based on furfural, termed donor-acceptor Stenhouse adducts (DASAs). A wide variety of these derivatives are easily prepared from commercially available s...

Journal: :Science 2005
C D Snyder

In the foregoing pages the writer has attempted to point out first, the importance to physiologists of the discovery and application to their problems of a unit of physiological activity to serve as a universal measure of life processes. Second, a survey of the field of excitation and response points to the probability that electron transfers are involved in every case and, therefore, that such...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم پایه 1394

ویژگی های اسپکتروسکپی کمپلکس های انتقال بار در واکنش الکترون دهنده والسارتان و آتنولول با الکترون پذیرنده های سیگما و پای مطالعه برهمکنش کمپلکسهای انتقال بار در آنالیزهای uv-visible, ft-ir, h nmr and xrd. پارامترهای ترمودینامیکی با استفاده از روش بنسی- هیلدبراند محاسبه شدند.

1999
Karsten Stahl Kai Baukus Yassine Lakhnech Martin Steffen

The applicability of model-checking is often restricted by the size of the considered system. To overcome this limitation, a number of techniques have been investigated. Prominent among these are data independence, abstraction, and compositionality. This paper presents a methodology based on deductive reasoning and model-checking which combines these techniques. As we show, the combination of a...

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