نتایج جستجو برای: alpha ray
تعداد نتایج: 500857 فیلتر نتایج به سال:
Thymidine phosphorylase (dThdPase) is an essential enzyme for the activation of the cytostatics capecitabine (N4-pentyloxycarbonyl-5'-deoxy-5-fluorocytidine) and its intermediate metabolite 5'-deoxy-5-fluorouridine (5'-dFUrd) to 5-fluorouracil (5-FUra) in tumors. We observed previously that several cytokines and cytostatics up-regulated dThdPase expression and consequently enhanced the efficacy...
Cosmic-ray (CR) propagation in the interstellar medium (ISM) of Galaxy might be a superdiffusion process, rather than commonly adopted normal diffusion. The spatial distribution CRs around pointlike source can to test real picture that describes CR propagation. TeV $\ensuremath{\gamma}$-ray halo Geminga pulsar is an ideal target, where escaped electrons and positrons derived from morphology hal...
چکیده ندارد.
Cadmium tungstate nano powder (CdWO4) was synthesized with co-precipitation method. Two different types of material (based on acetate and nitrate) were used as precursors. The synthesized powder was characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), Fourier transfer Infrared absorption (FTIR) spectrum, and photoluminescent (PL) spectrum. According to the X...
In this research, Zinc Sulfide doped with Silver (ZnS:Ag) powders were synthesised on Nitrogen atmosphere for detection of alpha particles by chemical Co-precipitation method. Different concentrations of Silver ions were investigated to optimize impurities amount for achive best alpha counting efficiency. Optical and structural characteristics of the synthesized powder using Photoluminescence S...
The interaction between influenza virus hemagglutinin and its cell-surface receptor, 5-N-acetylneuraminic acid (sialic acid), was probed by the synthesis of 12 sialic acid analogs, including derivatives at the 2-carboxylate, 5-acetamido, 4-, 7-, and 9-hydroxyl, and glycosidic positions. The equilibrium dissociation constants of these analogs were determined by nuclear magnetic resonance spectro...
The hard X-ray power law, prominent in the state black hole binaries, is generally due to thermal Comptonization corona. Optically thin synchrotron emission from compact jets commonly seen at infrared wavelengths state. extent of this spectrum higher energies remains uncertain. Here, a multi-wavelength study GX 339–4 presented. (IR) spectral index measured and compared fitted separately. On som...
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