4 B r o m o x a n t h o t o x i n r e a c t s w i t h c y a n o a c e t a m i d e t o f o r m 4 b r o m o 5 , 6 d i h y d r o x a n t h o t o x i n , w h i c h o n h y d r o l y s i s w i t h c o l d h y d r o c h l o r i c a c i d l e a d s t o t h e f o r m a t i o n o f c y a n o a c e t i c a c i d d e r i v a t i v e , b u t h y d r o l y s i s b y b o i l e d h y d r o c h l o r i c a c i...

a c i d a H a s a p r o t o n v i a t h e s o c a l l e d " c a r b a n i o n m e c h a n i s m " . a p r o c e s s t h a t r e q u i r e s a n a c t i v e s i t e b a s e . O n t h e o t h e r h a n d , t h e w o r k o n p k D A A O r e c o n s t i t u t e d w i t h t h e a r t i f i c i a l f 1 a v i n 5 < l e a z a F A D ( 3 ) f a v o r e d a h y d r i d e m e c h a n i s m p r o c e e d i n...

A s f a r a s I 'm c o n c e r n e d , peop le w h o e n j o y s t e a l i n g o t h e r s ' 'Protect heads,' says Levy To t h e E d i t o r : S ince I h a v e been t e a c h i n g in u n i v e r s i t i e s f o r 15 y e a r s , t h r e e of m y s t u d e n t s h a v e b e e n k i l led "in e i t h e r m o t o r b i k e o r m o t o r s c o o t e r a c c i d e n t s b e c a u s e t h e y w e r e...

We analyze the problem of determining inventory and pricing decisions in a two-period retail setting when an opportunity to refine information about uncertain demand is available. The model extends the newsvendor problem with pricing by allowing for multiple suppliers, the pooling of procurement resources, and more general informational dynamics. One contribution is the solution procedure: we s...

E s w e r d e n wei tere U n t e r s u c h u n g e n ü b e r d ie V e r ä n d e r u n g des a n o r g a n i s c h e n P h o s p h a t s p i e g e l s in d e r Z e l l e , als F o l g e des L i c h t D u n k e l W e c h s e l s mi tge te i l t . D i e G e s c h w i n d i g k e i t d i e ser V e r ä n d e r u n g e n ist v o n d e r A n b z w . A b w e s e n h e i t von C 0 2 u n a b h ä n g i g ...

D u r i n g most o f t he l a s t two decades , c o m p u t a t i o n a l l i n g u i s t s and A I r e s e a r c h e r s w o r k i n g o n n a t u r a l language have assumed t h a t phrase s t r u c t u r e grammars, d e s p i t e t h e i r c o m p u t a t i o n a l t r a c t a b i l i t y , were u n s a t i s f a c t o r y d e v i c e s f o r e x p r e s s i n g the s y n t a x o f n a t u r...

The c o n t r o l s t r u c t u r e o f a q u e s t i o n a n s w e r i n g s y s t e m i s d e r i v e d f r o m a s e t o f b a s i c a s s u m p t i o n s . F o r i t s d e s i g n and i m p l e m e n t a t i o n , a n o r m a l a l g o r i t h m i c l a n g u a g e i s u s e d . The d e s i g n l e a d s t o " s y m m e t r i c " p r o c e d u r e s , t h e r e s u l t i n g p r o g r a m s...

r a c t e r i s t i c o f t h e a c t i v i t y a s i t s r e a l i z a t i o n b y n o t o n l y p a r a l l e l b u t a l s o qual i t a t i v e l y heterogeneous p r o c e s s e s . I n t e r a c t i o n o f c o n c i o u s and u n c o n c i o u s compon e n t s i n t h e s t r u c t u r e o f human i n t e l l e c t u a l a c t i v i t y may s e r v e h e r e as an exampl e . F u r t h e r ...

INTRODUCTION sys t em and on a v a r i e t y of t ime s c a l e s . Hack and G o o d l e t t (1960) a r g u e t h a t t h e l a n d s c a p e and v e g e t a t i o n development models N a t u r a l ecosys tems deve lop th rough the i n t e r p l a y of p h y s i c a l and b i o l o g i c a l f ac c f Davis and Clements are i n c o r r e c t i n t o r s . B i o l o g i c a l f a c t o r s have ...

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 ...