PEARL is an A] language deve loped w i t h space and t i m e ef f ic ienc ies i n m i n d . I n add i t i on t o p rov id ing t h e usual fac i l i t i es such as s lo t f i l le r ob jec ts , demons and associat ive da ta bases, PEARL i n t r o d u c e s s t r onge r t y p i n g on s lo ts , user-ass is ted hash ing mechan i sms , and a fo res t of da ta bases. The resu l t i ng p r o d u c t ...

The main low temperature p r o p e r t i e s of g l a s s e s a r e reviewed and analyzed i n terms of t h e "two l e v e l systemsv model. A new mechanism of i n t e r a c t i o n between f l u o r e s c e n t molecules and f l u c t u a t i n g s t r a i n f i e l d s c rea ted by t h e two l e v e l systems involving t h e concept of e l a s t i c quadrupoles is proposed i n view of exp la i...

background: p e r io d ontal d i s e ase i s a c h ro ni c des t ructi v e d i s e a s e w h ich o ccurs in adults, young people, and children .   perio d ontal disease and periodontal pathoge n s ha v e been associ a ted with se v er a l syste m ic dise a ses and more recen t ly, se v e r a l stu d ies have sug g es te d the relat i o n ship bet w een p e rio d ontal d isease and cancer. stu d...

Fol lowing the enormous increase in the use of wireless mobile telephony across the wor ld concerns on hea l th e f fec t s o f hand-he ld mobi le phone rad ia t ions have induced a l a rge body of research , bo th ep idemio log ica l and exper imenta l . Th is wi re less t echnology uses e lec t romagne t ic radiation in microwave range which may be harmful to human health. Parts of the radio ...

THE PRACTICE of sp ik ing pu t t ing g r eens is no t a new one. I t h a s been prac t iced off and on by g r e e n k e e p e r s in th is c o u n t r y for m a n y y e a r s . It h a s usual ly been done a s a pure ly mechan i ca l m e a n s of so f t en ing pu t t ing g r e e n su r faces which h a v e become h a r d a n d c rus ted . The theo ry is t h a t the p u n c t u r i n g of m a n y ...