نتایج جستجو برای: 3009
تعداد نتایج: 152 فیلتر نتایج به سال:
When linear programming is used to rank sires on daughter profits, coefficients of input are required for representative daughters of each sire. Within herdyear-season regressions of daughter's actual 305-day milk, fat percent, days open, 2-min milk yield adjusted for total yield, total milking time, and body weight at birth and first calving on sire's proofs for production, conformation, milki...
Sequences from complete mitochondrial cytochrome b genes of 34 tigers support the hypothesis that Sumatran tigers are diagnostically distinct from mainland populations. None of the latter, including Bengals, Siberians, or Indochinese tigers, were found to have fixed diagnostic characters. Phylogenetic analysis of these sequences confirms these results. Within the framework of a phylogenetic spe...
Light-harvesting organisms employ photosystems to collect and harness light energy. Photosystems use hundreds of chromophores arranged in an energy gradient to move absorbed energy unidirectionally toward the reaction center1 and the efficiency provided by this directional energy transfer has inspired intensive investigation.2 Our group has utilized energy transport within conjugated polymer (C...
د-موضوع پایان نامه( شرح و بیان مساله): فناوری نانو با مطالعه و کاربرد موادی که حداقل از یک بعد کوچک تر از 100 نانومتر باشند سروکار دارد. این فناوری شامل دست کاری و ساخت مواد و ابزارهایی در مقیاس نانو می باشد. با توجه به آن که در این مقیاس، دیگر قوانین عادی فیزیک و شیمی صدق نمی کنند، ظرفیت بسیار زیادی برای تولید مواد جدید وجود دارد، به طوری که می توان ازساختارهای نانو در پزشکی و زیست شناسی (mo...
Aluminothermic rail welding was from the beginning a great success because its low price even in 1895 in Germany. This method is now, widely used all over the world for the railways construction, maintenance and modernization. Instructions give you guidelines for preparing papers for conferences or journals. After 1989, the welding needs of the potentials beneficiaries (Romanian Railways, Urban...
•Three hemispherand-strapped calix[4]pyrroles NaCl/KCl ion-pair receptors were prepared•These act as efficient Na+ and K+ transporters in the presence of Cl?•The this study promote Na+/K+ exchange cancer cells•Apoptosis is induced without creating osmotic stress or perturbing autophagy The tight regulation intracellular ion concentrations essential for diverse cellular functions eventually sust...
s 60, 5747 (1956). (100) FRANKEL, S., AND ALLERS,R.: Biochem. Z. 18,40 (1909).(101) FRIEDENWALD,J. S., MICHEL,H., AND BUSCHKE,W.: Arch. Biochem. and Biophys. (102) FURTH,0. YON: Hoppe-Seyler’s Z. physiol. Chem. 24, 142 (1898).(103) FURTH,0. VON: Hoppe-Seyler’s 8. physiol. Chem. 26, 15 (1898).(104)FURTH,0. VON: Hoppe-Seyler’s Z. physiol. Chem. 29, 105 ...
Artificial transmembrane ion transporters are attractive in the context of drug discovery since, principle, they may be used as novel therapeutics by promoting apoptosis (programmed cell death), interfering with autophagic processes, or inducing an antibiotic response via disrupting cellular homeostasis dissipating intracellular pH gradients. Considerable effort has been devoted into design art...
A continuous microflow system was developed with efficient catalyst recycling for a Mizoroki-Heck reaction of iodobenzene with butyl acrylate, using a low-viscosity ionic liquid ([bmim]NTf2) as the reaction medium. Using a CPC CYTOS Lab System as the microreaction apparatus, in combination with an originally developed microextraction/catalyst recycling system, the reaction medium, which contain...
The γ-secretase complex plays a role in Alzheimer’s disease (AD) and cancer progression. The development of clinical useful inhibitors, however, is complicated by the role of the γ-secretase complex in regulated intramembrane proteolysis of Notch and other essential proteins. Different γsecretase complexes containing different Presenilin or Aph1 protein subunits are present in various tissues. ...
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