v a g u e p r o p e r t i e s o f ' h o m o t o p i c a l e x a c t n e s s ' , a p p e a r i n g f o r i n s t a n c e i n t h e f i b r e o r c o f i b r e s e q u e n c e o f a m a p . S u c h n o t i o n s o f e x a c t n e s s c a n b e g i v e n f o r v e r y g e n e r a l ' c a t e g o r i e s w i t h h o m o t o p i e s ' h a v i n g h o m o t o p y k e r n e l s a n d c o k e r n e l s...

T h e e x t e n d e d x r a y absorption fine-structure ( E N A F S ) has been used t o determine b o n d lengths a n d coordination n u m b e r s around the central O s a t o m in b o n d i s o m e r i c hexakis (thioc y a n a t o i s o t h i o c y a n a t o ) o s m a t e s ( I I I ) [ O s ( N C S ) n ( S C N ) 6 w ] 3 ~ , n — 1 , . . . , 6 : T h e a b o v e assignm e n t o f the species with ...

Many a p p l i c a t i o n s f o r r o b o t i c systems r e q u i r e the a b i l i t y to handle moving o b j e c t s . A method f o r p r o v i d i n g a robot w i t h r e a l t i m e v i s u a l process i n g of moving o b j e c t s is presented. By a p p r o p r i a t e l y i s o l a t i n g the t r a c k i n g t a s k . I t i s p o s s i b l e to reduce the t r a c k i n g problem to two ...

CO L L E G E L I B R A R I A N S c a n n o t d e p e n d u p o n p r o f e s s i o n a l l i b r a r y l i t e r a t u r e a l o n e f o r b u i l d i n g u p t h e i r b o o k c o l l e c t i o n s . T h e f a c u l t i e s o f c o l l e g e s a n d u n i v e r s i t i e s p l a y a n i m p o r t a n t r o l e i n t h e s e l e c t i o n o f b o o k s f o r t h e c o l l e g e l i b r a r y a ...

B l o o d p r e s s u r e i s t h e f o r c e o f t h e b l o o d p u s h i n g a g a i n s t t h e w a l l s o f t h e a r t e r i e s . T h e h e a r t b e a t s a b o u t 6 0 7 5 t i m e s e a c h m i n u t e , a n d t h e b l o o d p r e s s u r e i s a t i t s g r e a t e s t w h e n t h e h e a r t c o n t r a c t s , p u m p i n g b l o o d i n t o t h e a r t e r i e s . T h i s i s c a...

The p r o b l e m s t u d i e d i s t h a t o f l e a r n i n g p r o b l e m s o l v i n g h e u r i s t i c s b y d o i n g . The pu rpose i s t o e x p l o r e t h e l e a r n i n g b e h a v i o r o f a h i g h l y c o n s t r a i n e d mechan ism. The c o n s t r a i n t s a r e choosen o n t h e b a s i s o f D s y c h o l o g i c a l c o n s i d e r a t i o n s . Computer r u n s show t ...

A b s t r a c t A t o m a t o p d u c t a s e) a r e e n z y m e s t h a t m a y a c c e p t a b r o a d r a n g e o f s u b s t r a t e s i n v i t r o b u t t h d e t h a t t a r g e t t h e m t o t h e s e c r e t o r y p a t h w a y [ a n u t [ 8 ] , t o b a c c o [ 9 ] a n d t o m a t o [ 1 0 ] .

M y c o b a c t e r i u m b o v i s ( B C G ) s ignif icant ly e n h a n c e d the d e v e l o p m e n t o f im­ muni ty b y CFW, C57BL/6 , C 5 7 B L / 1 0 S c N and B A L B / c ( N u + ) m i c e t o the e r y t h r o c y t i c s tages o f P. berghei. M i c e t reated wi th B C G requ i r ed f e w e r c y c l e s o f in fec t ion and Pansidar ( p y r i m e t h a m i n e + su l f adox ine ) c u ...

most of the systematic studies used in the development of human embryo culture media have been done first on mouse embryos. the general use of nmri outbred mice is a model for toxicology, teratology and pharmacology. nmri mouse embryo exhibit the two-cell block in vitro. the objective of this study was to evaluate and compare the effects of four kinds of culture media on the development of zygo...

1 I n t r o d u c t i o n E x p e r i m e n t s e m p l o y i n g o r i e n t a t i o n c o n t r o l l e d b i c r y s t a l s h a v e r e v e a l e d d e f o r m a t i o n a n d f r a c t u r e b e h a v i o r o f m a t e r i a l s w i t h s i n g l e b o u n d a r i e s a n d i t s r e l a t i o n t o t h e b o u n d a r y s t r u c t u r e / l 3 / . H o w e v e r , e f f e c t s o f b o u n...