1896 H a s c h e k a n d L i n d e n t h a l (32) o p a c i f i e d v e s s e l s o f a n a m p u t a t e d h a n d u s i n g T e i c h m a n n ' s m i x t u r e . B r a u s (11) d e m o n s t r a t e d v e i n s a n d a r t e r i e s o f a h a n d u s i n g m e r c u r y . 1907 K a s s a b i a n (40) d e m o n s t r a t e d v e s s e l u t i l i z i n g b i s m u t h s u b n i t r a t e a n d ...

a simple and efficient method for synthesis of tetrahydropyrimido[4,5-b]quinoline derivatives via three component reaction of aromatic aldehydes, dimedone and 6-amino uracil derivatives using a catalytic amount of sulfonic acid functionalized nanoporous silica (sba-15-pr-so3h) is described. the advantages of this method are easy and clean work-up, high yield, mild reaction condition, reusable c...

a facile and efficient method for the preparation of 1, 1-diacetates of aldehydes is improved.p2o5/sio2 catalyzed 1, 1-diacetates formation from aldehydes in dry media. advantages of this methodare the use of an inexpensive and selective catalyst with high yields in simple operation and shortreaction time under solvent-free conditions.

nanosilica periodic acid (nano-spia) is found to be a new, powerful, and reusable heterogeneous catalyst for the rapid synthesis of 2-naphtholazo dyes via diazotization of aromatic amines and followsazo coupling with 2-naphthol under solvent-free conditions at room temperature by grinding. eco-friendly, heterogeneous reaction conditions, high stability of diazonium salt, simple experimental pro...

S y n t a c t i c a n a l y s i s i n o u r t e r m s means t o c o n s t r u c t a d e s c r i p t i o n o f t h e s y n t a c t i c s t r u c t u r e s o f a g i v e n s e n t e n c e , s t a r t i n g f r o m a f o r m a l d e s c r i p t i o n o f t h e s y n t a c t i c f e a t u r e s o f . t h e w o r d f o ~ ( t h e r e s u l t o f a p r e c e d i n g w o r d f o r m a n e . l y s l s )...

S i g n i f i c a n t p o r t i o n s o f t h e C o m m i s s i o n ’ s m e m o r a n d u m o llo w : -------------------------------------------------------------------------------y o u r g u i d a n c e , ” I t r e c o m m e n d e d t o a p p o i n t i n g o f f ic e r s t h e f o l l o w ­ i n g p o l i c y : “ I n d e t e r m i n i n g w h e t h e r a n i n ­ c r e m e n t is d u e o n A p ...

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

Let G ⊂ S O (4 ) d e n o te a fi n ite su b g ro u p c o n ta in in g th e H e ise n b e rg g ro u p . In th e se n o te s w e c la ssify a ll th e se g ro u p s, w e fi n d th e d im e n sio n o f th e sp a c e s o f Gin v a ria n t p o ly n o m ia ls a n d w e g iv e e q u a tio n s fo r th e g e n e ra to rs w h e n e v e r th e sp a c e h a s d im e n sio n tw o . Th e n w e c o m p le te t...

Very l i t t l e research has been done t o e x p l o r e commercial a p p l i c a t i o n o f t h e thermochemical d e g r a d a t i o n o f po l ysacchar ide m a t e r i a l s t o o r g a n i c a c i d s i n a l k a l i n e s o l u t i o n . Much o f t h e work on a l k a l i n e degrada t ion o f po l ysacchar ides has been conducted a t 100°C or l ower t o i n v e s t i g a t e mechanisms o...

A c e n t r a l p r o b l e m in s p e e c h s y n t h e s i s w i t h u n r e s t r i c t e d v o c a b u l a r y i s t h e a u t o m a t i c d e r i v a t i o n of c o r r e c t p r o n u n c i a t i o n f rom t h e g r a p h e m i c form of a t ex t . The s o f t w a r e modu le GRAPHON w a s d e v e l o p e d to p e r f o r m t h i s c o n v e r s i o n f o r German a n d i s c u r r e n t ...