نتایج جستجو برای: gel chemistry

تعداد نتایج: 212056  

Journal: :Accounts of chemical research 2016
Rui Wang Michelle K Sing Reginald K Avery Bruno S Souza Minkyu Kim Bradley D Olsen

Polymer networks are widely used from commodity to biomedical materials. The space-spanning, net-like structure gives polymer networks their advantageous mechanical and dynamic properties, the most essential factor that governs their responses to external electrical, thermal, and chemical stimuli. Despite the ubiquity of applications and a century of active research on these materials, the way ...

Journal: :Nanoscale 2013
Peter Kohn Sandeep Pathak Morgan Stefik Caterina Ducati Ulrich Wiesner Ullrich Steiner Stefan Guldin

Conducting mesoporous TiO2 is rapidly gaining importance for green energy applications. To optimise performance, its porosity and crystallinity must be carefully fine-tuned. To this end, we have performed a detailed study on the temperature dependence of TiO2 crystallisation in mesoporous films. Crystal nucleation and growth of initially amorphous TiO2 derived by hydrolytic sol-gel chemistry is...

Journal: :Journal of Non-Crystalline Solids 1988

Journal: :Clinical chemistry 1990
P E Mayrand L B Hoff L J McBride J A Bridgham R Cathcart K P Corcoran G S Golda D H Keith E W Lachenmeier D E Madden

An instrument/chemistry system is described that automates a new chemical procedure functionally equivalent to Southern blotting. A fluorescence gel scanner that detects migrating DNA fragments in real-time analyzes the samples produced by a prototype liquid-handling instrument that automates a solution-phase hybridization/solid-phase capture chemistry for DNA analysis. The combination of this ...

Journal: :Journal of the American Chemical Society 2003
Gustavo Larsen Raffet Velarde-Ortiz Kevin Minchow Antonio Barrero Ignacio G Loscertales

Electrically driven liquid jets are combined with sol-gel methods to design vesicles and fibers made from inorganic oxides and hybrid materials with diameters in the micrometer and submicrometer range. The proposed materials synthesis method benefits greatly from the maturity of sol-gel chemistry and the generalities of a structure-directing phenomenon that is physical in nature.

2005
D. Y. Kong M. Yu C. K. Lin X. M. Liu J. Lin J. Fang

Sol-gel Synthesis and Characterization of Zn2SiO4:Mn@SiO2 Spherical Core-Shell Particles D. Y. Kong, M. Yu, C. K. Lin, X. M. Liu, J. Lin, and J. Fang Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, and Graduate School of the Chinese Academy of Sciences, Beijing 100049, China Department of Chemistry, Nor...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کاشان - دانشکده علوم انسانی 1390

increasing academic and professional language demands around the world are not a deniable fact. the purpose of this study was to investigate english language needs and communication needs of the chemistry students at master and ph.d. levels at the iranian universities. in this research, different methods were used including un-structured interview, structured interview, and two sets of question...

Journal: :iranian journal of catalysis 2016
zahra lasemi bahareh sadeghi fereshteh amiri tavasoli

nano silica sulfuric acid as a solid acid, was described to be an effective catalyst for one-pot three-component reaction of kojic acid, aryl aldehydes and indoles for the preparation of 2-substituted aryl (indolyl) kojic acid derivatives. the catalyst was prepared by combination of chlorosulfonic acid to nano silica gel. the size of nanoparticles were observed with sem.all prepared compounds w...

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