P r o t e i n i s o l a t e o b t a i n e d from g r e e n a l g a e ( S c e n e d e s m u s -_-I_ o b l i q u u s ) c u l t i v a t e d u n d e r c o n t r o l l e d c o n d i t i o n s w a s c h a r a c t e r i z e d . M o l e c u l a r w e i g h t d e t e r m i n a t i o n o f f r a c t i o n a t e d a l g a l p r o t e i n s u s i n g S D S p o l y a c r y l a m i d e g e l e l e c t r o p ...

d-tartaric acid is successfully used as a green and efficient catalyst for the synthesis of 3,4-dihydropyrimidin-2(1h)-ones under solvent-free conditions. the developed method has many advantages, including devoid of harmful catalyst and solvents, high yield and easily work-up.

the nmr spectra of azo dyes, 5-arylazobarbituric (5a-g), 5-arylazo-1,3-dimethylbarbituric(6a-g) and 5-arylazothiobarbituric acids (7a-g) were studied in dmso-d6 in differentconcentrations. an intramolecular hydrogen bond was observed and indicating that thehydrazone forms is mostly predominant. the peak of the hydrazone proton was severelybroadened and its chemical shift appeared at down field ...

A l l i s C h a l m e r s M a n u f a c t u r i n g C o M a r a t h o n Oi l C o . * N a t i o n a l B a n k o f D e t r o i t . D o w C h e m i c a l C o . T H U R S . N O V . 1 9 A m e r i c a n C y a n a m i d C o . C o n t i n e n t a l I l l i no i s N a t i o n a l B a n k a n d T r u s t C o m p a n y o f C h i c a g o . C o r n i n g G l a s s Wo r ks . E s s e x I n t e r n a t i o n a...

electrochemical oxidation of iodide has been studied in the presence of 2-thioborbituric acid using cyclic voltammetry and controlled-potential coulometry. the results indicate that, the resulting iodine takes part in halogenations reaction with 2-thiobarbituric acid. in addition, the present data are indicative of the suitability of iodide as a quasi mediator for determination of 2-thiobarbitu...

L a n g u a g e i n t e r a c t i o n (L I ) a s a p a r t o f i n t e r p e r s o n a l c o m m u n i c a t i o n i s c o n s i d e r a b l y i n f l u e n c e d by p s y c h o l o g i c a l a n d s o c i a l r o l e s n f t h e p a r t n e r s a n d t h e i r p r a g m a t i c g o a l s . T h e s e a s p e c t s o f c o m m u n i c a t i o n s h o u l d be a c c o u n t e d f o r w h i l e e ...

T h i s p u b l i c a t i o n c o n t a i n s w o r k o n s e v e r a l a s p e c t s r e l a c e d t o p o l y s a c c h a r i d e s y n e r g y . F i r s t l y a m o d e l f o r p r e d i c t i n g t h e v i s c o s i t y o f n o n i n t e r a c t i n g m i x e d p o l y s a c c h a r i d e s o l u t i o n s b a s e d u p o n c o i l o c c u p a n c y w a s d e r i v e d a n d e x p e r i n e...

two simple protocols for the synthesis of three-component condensation reaction of an aldehyde, β-ketoester and urea or thiourea to obtain the 3, 4-dihydropyrimidin-2(1h)-ones (thiones) using nano silica phosphoric acid are reported. short reaction times, high yields, reusability of catalyst and easy workup are some advantages of these protocols.

Fig. 3. Step Recovery Diodes in glass and ceramic packages. Ceramic pack age is designed to be especially useful u-ith coaxial structures but can also be used in other ways as in Fig. 8. h p ' s a f f i l i a t e , h p a s s o c i a t e s , w a s e s t a b l i s h e d f o u r y e a r s a g o t o p e r f o r m r e s e a r c h , d e v e l o p m e n t a n d m a n u f a c t u r i n g i n t h e s e ...

the copper(ii) complex [cu(pic)2]·2h2o was synthesized with 2-picolinic acid (hpic) and copper acetate as reactants by room temperature solid-solid reaction. the composition and structure of the complex was characterized by elemental analyses, single crystal x-ray diffraction, x-ray powder diffraction, ft-ir spectroscopy and thermogravimetry-differential scanning calorimetry. the crystal struct...