نتایج جستجو برای: d structure
تعداد نتایج: 2060138 فیلتر نتایج به سال:
asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...
vitamin d deficiency is a worldwide epidemic, with well known impacts on calcium metabolism and bone health, but increasingly recognized associations with chronic health problems such as bowel and colonic cancer, arthritis, diabetes and cardiovascular disease. in recent years in the sports medicine literature, there has been an increased focus on the potential impact that inadequate vitamin d l...
I RECENTLY ORDERED A BOOK, BASIC COLOR Terms: Their Universality and Evolution (1), through an online book dealer. The book was simply advertised as a " used book, first edition, dust jacket, good condition. " When it arrived, I opened the front cover and found a bookplate from The Rockefeller University and a tag with the words " Laboratory book—Dr. Hartline. " It has been 20 years since Halda...
A new complex of cadmium was synthesized by the reaction of cadmium nitrate, potm;sium dichromate, and ethylenediamine. Its crystal structure was dete rmined by X-ray diffractomctry. It is Crystalli:tt.:d in a monoclinic system, with P21 /n(1 4) poinl group and 4 molecules of the complex in the unit ceiL The cryst,d parameters arc: a = 7.4615(7)A. h= 7.1480(2)A. c= 14.~4B5( 10)A /3= 92.(...
We study D-branes on abelian orbifolds C/ZN for d = 2, 3. The toric data describing the D-brane vacuum moduli space, which represents the geometry probed by D-branes, has certain redundancy compared with the classical geometric description of the orbifolds. We show that the redundancy has a simple combinatorial structure and find analytic expressions for degrees of the redundancy. For d = 2 the...
Using a combination of electronic-structure and many-body calculations, we investigate correlations effects in the halfmetallic ferromagnet NiMnSb. A realistic many-body Hamiltonian, containing only Mn-d orbitals shows the importance of non-quasiparticle states just above the Fermi level. Our results suggest that for a better description of low energy states around Fermi level, Ni-d orbitals s...
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