a simple, clean, and environmentally benign three-component process for the synthesis of 2-amino-4hchromenes using [mim]cl, as an efficient catalyst under solvent-free conditions are described. a wide range of aromatic aldehydes easily undergoes condensations with 1-naphthol and malononitrile under solvent-free conditions to afford the desired products of good purity in excellent yields. taking...

in the present work, b-zsm-5 zeolite membranes were synthesized on porous tubular α-alumina supports by several subsequence in situ crystallization hydrothermal treatments. the tio2- bohmite and ɣ- alumina intermediate layers were applied to improve the lattice matching between zeolite layer and the support. the uniform membrane intermediate layers with low permeation resistance were prepared o...

atypical mycobacterium granulomatous skin infections are often accured by mycobacterium marinum, m. ulcerans, m. fortuitum, and m. avium colonies. skin infections probably originate from an environmental source such as contacting with aquatic animals, fish farming and swimming in the pools, and inoculate into skin through skin wounds, scratches, trauma, and surgery. the lesions appear as purple...

objective(s): binary hybrids of chitosan-zeolite have many interesting applications in separation and bacteriostatic activity. materials and methods: template free zsm-5 zeolite was synthesized by hydrothermal method, physical hydrogels of nano chitosan in the colloidal domain were obtained in the absence of toxic organic solvent and then nano chitosan/zsm-5 hybrid composites with nano chitosan...

"̂T^ H A T P O T E N T I A L F O R T E 1 E E N R I C H M E N T O F I s c i e n c e is w h a t B a r r o w h a s se t o u t t o e x p l o r e _JL i n Impossibility. A p r o f e s s o r o f a s t r o n o m y a t t h e U n i v e r s i t y o f S u s s e x i n E n g l a n d , B a r r o w w r i t e s w i t h g r e a t s c h o l a r s h i p , e l e g a n c e a n d w i t . H e classif ies t h e l i m i ...

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 ...

2-(methylamino) pyridine (hmap) reacts with meli in thf and generates the lithium salt (limap). further reaction of [cu(tmeds)2][cucl2] (tmeda=tetramethylethylenediamine) with one equivalent of this ligand in thf leads to the formation of a yellow dimeric cu(i) complex, [cu(map)]2. analytical data, molecular weight, and magnetic susceptibility measurements, confirm the formula [cu(map)]2 .

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...

F u n d a m e n t a l p r o b l e m s of g r o w t h a n d t h e sc reen ing of c h e m o t h e r a p e u t i c a g e n t s b e c o m e m o r e n e a r l y de f inab le in precise c h e m i c a l t e r m s w h e n q u a n t i t a t i v e p rocedu re s (5, 9) for e s t i m a t ing p ro l i f e r a t i on are used in t h e p resence of a c h e m i c a l l y def ined b a c k g r o u n d m e d i u ...