Mahanty has pointed out that by expanding the imaginary part o f a lattice Green’s function in a sine series, direct numerical treatm ent o f the principal value integral which determines the real part o f a Green’s function o f real argument can be circumvented. Here M ahanty’s result is extended to cover Green’s functions o f purely imaginary arguments. Also, alternative expressions which, in...

We describe a series o,f five statistical models o,f the translation process and give algorithms,for estimating the parameters o,f these models given a set o,f pairs o,f sentences that are translations o,f one another. We define a concept o,f word-by-word alignment between such pairs o,f sentences. For any given pair of such sentences each o,f our models assigns a probability to each of the pos...

The volatile shoot oil o f Coleonema album was found to be composed o f monoterpenes, ses­ quiterpenes and phenylpropanoids. Heterotrophic and photomixotrophic callus cultures were established from green parts o f the plant. A photomixotrophic cell line contained a heteroge­ neous population o f plastids and synthesized an essential oil, which differed qualitatively and quantitatively from the ...

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 )...

In t h i s paper we show how t h e p a t t e r n samples g e n e r a t e d f r o m t h e unknown asymmet r i c f i n i t e m i x t u r e d i s t r i b u t i o n a re d i c h o t o m i z e d b y t h e Karhunen-Loeve o r t h o g o n a l sys tem i n t h e o p t i m a l way. We i n t r o d u c e t h e concep t o f t h e d i f f e r e n c e o f f e a t u r e s o f two c a t e g o r i e s and p r o v...

o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o In the past five years, bservati ns at ptical and near-infrared wavelengths btained with the and gr und-based adaptive ptics have pr vided the first well-res lved images f y ung circumstellar disks, which may f rm planetary systems. We review these tw bservati nal techniques and highlight their results by pres...

Young poplar cuttings (Populus nigra L. cv. Loenen and P. maximowiczii Henry x P. nigra L. cv. Rochester) were exposed for six weeks in open-top chambers to realistic concentrations o f pollutant mixtures: 1) control; 2) SO ,/N O x; 3) 0 3/N 0 x and 4) S 0 2/ 0 3/N 0 x. In this sequence o f fumigation variants, the degree o f influence o f the various parameters o f the nitrogen me­ tabolism an...

the evol uulan 0 f pregnancy in cardia v modern. pertaining literatu' - asculare surgery discussed and re revlsed ?4 pe i c thought that any pregnant . - . rsona ases arc analysed and it was f f . woman suffering fro m' i o allure in the pregnancy sho id h . iii itra stenosis with a history meanwhilie the causes of our utwo dave hmitral c. omml.ssurotcmy as soon as possible minwhile the causes ...

ATP synthase (F(o)F(1)) consists of an ATP-driven motor (F(1)) and a H(+)-driven motor (F(o)), which rotate in opposite directions. F(o)F(1) reconstituted into a lipid membrane is capable of ATP synthesis driven by H(+) flux. As the basic structures of F(1) (alpha(3)beta(3)gammadeltaepsilon) and F(o) (ab(2)c(10)) are ubiquitous, stable thermophilic F(o)F(1) (TF(o)F(1)) has been used to elucidat...