Prev ious work h a s sugges ted t h a t s o m e pro te in(s ) assoc ia ted w i t h t he f u n c t i o n i n g o f t he mi to t i c a p p a r a t u s ( M A ) in h u m a n a m n i o n cells is synthes ized d u r i n g a re la t ive ly shor t pe r iod j u s t p r io r to t he e n t r y of cells in to divis ion, a n d t h a t th is p ro t e in is conse rved a n d reu t i l i zed by d a u g h ter ce...

Tim o th y H ig h le y , P a u l F. R e y n o ld s U n iv e rs ity o f V irg in ia { tjh ig h le y , re y n o ld s } @ v irg in ia .e d u V iv e k a n a n d V e lla n k i IB M , R e s e a rc h Tria n g le P a rk v e lla n k i@ u s .ib m .c o m Ab s tr a c t C o s t-b e n e fit a n a ly s is a tte m p ts to b a la n c e th e b e n e fits o f file p re fe tc h in g a g a in s t th e c o s ts o f ...

The fac t t ha t sarcomas are induced in rodents by imbedded films of polymers has been established in this l abora to ry (1~-15) and had been conf irmed by a number of o ther invest igators (~, 6, 8, 10, 19). Subsequent studies have shown t h a t this phenomenon is not l imited to films of organic polymers b u t t h a t imbedded meta l foils have the same effect (9, 10, l l ) . This fact , in ...

We have addressed the problem of threshold voltage ( TH) variation in flash memory cells after heavy-ion irradiation by using specially designed array structures and test instruments. After irradiation, low TH tails appear in TH distributions, growing with ion linear energy transfer (LET) and fluence. In particular, high LET ions, such as iodine used in this paper, can produce a bit flip. Since...

I n 1994, 38% of hospi ta l s su rveyed ind ica t ed plans for future workforce cuts. Twenty-seven percen t of these hospi ta l s i nd ica t ed they are t a rge t ing nurses, compared wi th only 19% in 1993.1 Professional nurs ing staff cuts are not just a resul t of dec reased need or inc reased efficiency: 50% of the nurses whose jobs are e l imina ted are be ing rep laced wi th un l i censed...

in this article, preparation of polypyrrole and its nanocomposites as adsorbents werediscussed and the capability of separation of copper ions from aqueous solution were studied.polypyrrole was prepared by chemical oxidative polymerization method of pyrrole usingfecl3 as an oxidant. the removal of cu (ii) was investigated using ppy, ppy/tio2 andppy/tio2/dhsna nanocomposites. the products were i...

a new category of hybrid organic-inorganic zirconium phosphonate, zr[(o3pch2)2nc6h4co2h].2h2o was synthesized and the applicability of the prepared sorbent as an ion-exchanger for removal of ni2+, cu2+ and zn2+ from aqueous solutions was evaluated. the characterization of the synthesis product was done using tg-dtg, sem, xrd, ft-ir techniques. study of the sorption isotherms and its kinetic par...

In this paper, grafting of acrylic acid monomer on Gum tragacanth was performed. Variable of experiment included concentration of initiators and monomer, time, and temperature. Grafting efficiency was measured in the term of percentage of grafting (%G) and percentage of grafting efficiency (%E). Effectiveness of grafted gum in ferrous ion removal at different condition was assessed. According t...