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

abstract-a novel and efficient method has been developed for the synthesis of pyrano[3,2-c]quinoline-2,5-dione derivatives by the convenient ultrasound-mediated condensation of 4-hydroxyquinolin-2-one with meldrum’s acid and aldehydes in the presence of a catalytic amount of [hmim]hso4 as a green, efficient and reusable acidic ionic liquid medium. the stability of the ionic liquid during the re...

C o n d e n s a t i o n o f i s a t i n w i t h 4 a m i n o a c e t o p h e n o n e g a v e a q u a n t i t a t i v e y i e l d o f i s a t y l i d e n e j 9 a c e t y l a n i l i n e ( 1 ) . C o n d e n s a t i o n o f 1 w i t h a r o m a t i c a l d e h y d e s y i e l d e d t h e c o r r e s p o n d i n g i s a t y l i d e n e a z o m e t h i n e c h a l c o n e s ( 2 a f ) . I n t e r a c t...

the research has been done for assessment of effects of different concentrations of indole-3-butyric acid (iba) on rhizogenesis of scions of c. phlomidis in 2010.  the research has been done on randomized complete-blocks for five replications and three treatments with zero, 2000ppm and 3000pmm concentration. different characters such as number of root of each scion, length of root, length of ne...

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

the dual diene/1,3-dipolar character of 1-h-imidazole 3-oxide, hio 1, allows this compound toparticipate in a competitive diels-alder (da)/1,3-dipolar cycloaddition (13dc) reaction toward c=sdouble bond of the electro-deficient sulfonyl methane sfm 2. the b3lyp/6-311++g(d,p) calculatedrelative gibbs free energies indicate that among the studied 13dc and da reactions, former iscompletely preferr...

y e a r s o f m u s c l e c o n t r a c t i o n h e a d a c h e a c t i v i t y was t e s t e d . T h r e e l e v e l s o f m u s c l e c o n t r a c t i o n h e a d a c h e c h r o n i c i t y (> 20 y e a r s , < 10 y e a r s , a n d n o n e ) w e r e e x a m i n e d u n d e r i m a g i n e d s t r e s s a n d a q u i z f a l s e l y p r e s e n t e d a s a m e a s u r e o f i n t e l l i g e ...

T h r e e c o m p o n e n t c o n d e n s a t i o n o f a c t i v e m e t h y l e n e c o m p o u n d s w i t h a n i l i n e a n d t r i a l k y l o r t h o f o r m a t e g i v e s a n i l i n o m e t h y l e n e 1 , 3 d i c a r b o n y l s , w h i c h c a n b e h y d r o l y s e d w i t h a q u e o u s K 2 C O 3 , K O H o r H C l , d e p e n d i n g o n t h e s e n s i t i v i t y o f t h e h...

a simple method has been developed for the preconcentration of lead (ii) based on the adsorption of its 1-(2-pyridyl azo)2-naphtol (pan) complex on aoctadecyl bonded silica cartridges. the influence of acidity, eluting agents, stability of the column, sample volume and interfering ions has been investigated in detail. the adsorbed complex could be eluted using environmentally benign hno34m and ...

L a t e r al c ar c o l l i s i on s w i t h t r u c k s o r o b j e c t s ac c ou n t f o r an i mp o r t an t s h ar e o f s i d e c o l l i s i o n s w i t h s e r i ou s ly o r f a t a l l y i n .i u r e d . On the b as i s o f 9 4 c ar / t ru c k and 5 8 c ar / ob j e c t s i d e c o l l i s i o n s t h e a c c i d e n t c h ar ac t e r i s t i c s a n d t h e i n j u r y r i s k s o f t h...