نتایج جستجو برای: h2 and h1
تعداد نتایج: 16832634 فیلتر نتایج به سال:
Thioredoxins (Trxs) are small ubiquitous disulfide reductases that participate in dithiol-disulfide exchange reactions. In contrast to animals and prokaryotes that typically possess one or a few genes encoding Trxs, higher plants contain eight different Trx types: f, m, x, y, z, o, s, and h. Trx h with multiple forms is involved in different processes such as seed germination, cellular protecti...
We prove a relation between several easy-to-define numerical invariants of generic knots in H × S, and discuss its implication to contact geometry. 1. Definitions of Invariants The 2-dimensional hyperbolic space H2 is defined to be the upper half plane {(x, y) ∈ R2| y > 0} equipped with the metric ds2 = dx +dy y2 . STH2 is the unit tangent bundle of H2, i.e., the S1-bundle over H2 formed by tan...
the aim of the present study was to investigate whether and by which mechanism; histamine can induce state-dependent retrieval of passive avoidance task. the pre-training or pre-test intracerebroventricular (i.c.v.) injection of histamine (20µg/mouse) impaired retrieval, when it was tested 24 h later. in the animals, which retrieval was impaired due to histamine pre-training administration, pre...
بهمنظور بررسی دورههای کوتاهمدت تنش گرما بر عملکرد دانه و خصوصیات فیزیولوژیک گیاه گندم، آزمایشی در سال زراعی 94-1393 در مزرعه تحقیقاتی دانشگاه علوم کشاورزی و منابع طبیعی خوزستان بهصورت بلوکهای نواری در سه تکرار اجرا گردید. عاملهای آزمایشی شامل چهار رقم گندم بهاره بودند. تنش گرما (حداکثر 35 درجه سانتیگراد) با نصب اتاقکهای تولید تنش حرارتی روی کرتها اعمال گردید. بوتههای گندم به مدت سه رو...
The recent development of a technique for quantitative measurement of conjunctival microvascular permeability has permitted detailed pharmacological evaluation of H1- and H2-receptor involvement in histamine-induced increases in conjunctival microvascular permeability and the role of histamine in microvascular permeability changes associated with immediate hypersensitivity responses in the conj...
We consider a Heegaard splitting M = H1 ∪S H2 of a 3-manifold M having an essential disk D in H1 and an essential surface F in H2 with |D ∩ F | = 1. From H1∪SH2, we obtain another Heegaard splitting H′ 1∪S′ H′ 2 by removing a neighborhood of F from H2 and attaching it to H1. As an application, by using a theorem due to Casson and Gordon, we give examples of 3-manifolds admitting two Heegaard sp...
Genomic clones of nm23-H1 and -H2 were isolated. The nm23-H1 and -H2 genes were located in a tandem array 4 kilobases apart. Each genome contained 5 exons and most of the splicing sites in the exon-intron junctions of two isotypes were essentially identical. A probe derived from intron 4 of nm23-H1 was used to examine the loss of heterozygosity (LOH) in primary colorectal carcinomas. Twenty-nin...
Several lines of evidence suggest that brain histamine may be involved in the central control of food intake. The effect of histamine on feeding is mediated through three kinds of receptors (H1, H2, and H3). The present study was designed to investigate the effect of intracerebroventricular injection of histamine, promethazine (H1 antagonist) and ranitidine (H2 antagonist) on food intake of fre...
We prove the conjecture of Seymour (1993) that for every apex-forest H1 and outerplanar graph H2 there is an integer p such that every 2-connected graph of pathwidth at least p contains H1 or H2 as a minor. An independent proof was recently obtained by Dang and Thomas (arXiv:1712.04549).
Given a finite or infinite graph G and positive integers `, h1, h2, h3, an L(h1, h2, h3)labelling of G with span ` is a mapping f : V (G) → {0, 1, 2, . . . , `} such that, for i = 1, 2, 3 and any u, v ∈ V (G) at distance i in G, |f(u)−f(v)| ≥ hi. A C(h1, h2, h3)-labelling of G with span ` is defined similarly by requiring |f(u)− f(v)|` ≥ hi instead, where |x|` = min{|x|, `− |x|}. The minimum sp...
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