compound n2, n3, n7, n8, 1, 4, 5, 6, 9, 10-decaphenyltetradecahydrodipyrazino [2, 3-b: 2, 3-e] pyrazine-2, 3, 7, 8-tetraamine (4) was prepared by condensation of 1, 1′, 2, 2′-tetrakis (phenylamino) ethane (1d) and glyoxal in etoh or i-proh. also, reaction of 1d with glyoxal in equimolare in etoh resulted 5,6-bis (ethoxy)-n2, n3, 1, 4-tetraphenylhexahydro-2, 3-pyrazinediamine (5). the natures of...

Consider the Parzen-Rosenblatt kernel estimate f. = (l/n) ~ Kh (x-Xi), where h > 0 is a constant, K is an absolutely integrable i=1 function with integral one, Kh(X)=(1/ha)K(x/h), and X1 ..... X. are iid random variables with common density f on R d. We show that for all e > 0, n8 2 2 sup P(lSlf.-fl-E~lf.-fll>e)<Ze 32~1KI. whenever liminfl~E~lf,-f]=oo. We also study what happens when h is allow...

Prophylactic treatment for hemophilia A involves infusion of factor VIII (FVIII) concentrates every 2 to 3 days. Liposomes can be efficacious vehicles for medicines, and surface modification by PEGylation can prolong liposome circulation time. When reconstituted with PEGylated liposomes (PEGLip's), recombinant FVIII binds noncovalently but with high affinity to the external liposome surface. Th...

New laboratory spectra of crystalline and amorphous diacetylene ice have been recorded in the range of 7000–500 cm (1.4–20mm) to aid in the identification of solid diacetylene on Saturn’s moon Titan. We have established that amorphous diacetylene ice is stable only at temperatures less than 7071K. With respect to observations on Titan, the best approach would be to utilize future space-based te...

This paper describes a range of theoretical studies into the likely properties of poly-nitrogen molecules (Nn, n>3). In particular, we describe the approach we have used to assess the potential detonation performance of this class of material, and illustrate this with a number of example calculations. We also discuss the implications and limitations of these predictions. In addition, we describ...

Forty five eyes with up to 2 dioptres of myopic astigmatism and up to 1 dioptre sphere either plus or minus following cataract extraction and implantation of a monofocal intraocular lens were examined to assess their unaided visual acuities. Forty three percent were able to see 6/12 and N8, and 60% were able to see 6/12 and N10. Subjects with between 1 and 2 dioptres of myopic astigmatism and v...

formance of firms In the US telecommunication services Industry is exanrlned, using extant Ideas to suggest that deregulation has dfffering impacts on different dlmensions of firms’ performance. The performance of the top 39 local exchange companies Is measured over the period 1981-87 using a multiperiod, multi-output ratio analysis model which enables dlsaggregatlon of gross performance measur...