نتایج جستجو برای: chemical method

تعداد نتایج: 1959288  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم بهزیستی و توانبخشی - دانشکده توانبخشی 1393

abstract objectives gradual increase length and complexity of utterance (gilcu) therapy method is a form of operant conditioning. this type of treatment is very precise and controlled that is done in 54 steps in 3 speech situations consisted of monologue, reading and conversation. this study aimed to examine the effects of gilcu treatment method on reduction of speech dysfluency of school-age...

Journal: :Biochemistry 2017
Justine N deGruyter Lara R Malins Phil S Baran

Advances in bioconjugation and native protein modification are appearing at a blistering pace, making it increasingly time consuming for practitioners to identify the best chemical method for modifying a specific amino acid residue in a complex setting. The purpose of this perspective is to provide an informative, graphically rich manual highlighting significant advances in the field over the p...

Journal: :Physical review letters 2012
Paul A Goddard Jamie L Manson John Singleton Isabel Franke Tom Lancaster Andrew J Steele Stephen J Blundell Christopher Baines Francis L Pratt Ross D McDonald Oscar E Ayala-Valenzuela Jordan F Corbey Heather I Southerland Pinaki Sengupta John A Schlueter

Gaining control of the building blocks of magnetic materials and thereby achieving particular characteristics will make possible the design and growth of bespoke magnetic devices. While progress in the synthesis of molecular materials, and especially coordination polymers, represents a significant step towards this goal, the ability to tune the magnetic interactions within a particular framewor...

Journal: :Journal of Zhejiang University. Science. B 2005
Wan-suo Chen Zhi-rong Chen

The quantum chemical method is employed to study the modified asymmetric allylation of benzaldehyde controlled by diisopropyl D-(-)-tartrate auxiliary. All the structures are optimized completely at the B3LYP/6-31G(d,p) level. The (R)-secondary alcohol can be achieved mainly through a six-membered ring chair-like transition state structure. From the relative reaction rates theory the main produ...

Journal: :Optics express 2012
Shailesh Kumar Ying-Wei Lu Alexander Huck Ulrik L Andersen

We demonstrate propagation of plasmons in single crystalline silver nanostructures fabricated using a combination of a bottom-up and a top-down approach. Silver nanoplates of thickness around 65 nm and a surface area of about 100 μm(2) are made using a wet chemical method. Silver nanotips and nanowires are then sculptured by focused ion beam milling. The plasmons are excited by using the fluore...

Journal: :The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science 1890

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