نتایج جستجو برای: آزمون d2

تعداد نتایج: 137851  

Journal: :Electronic Journal of Statistics 2021

This paper is on the normal approximation of singular subspaces when noise matrix has i.i.d. entries. Our contributions are three-fold. First, we derive an explicit representation formula empirical spectral projectors. The neat and holds for deterministic perturbations. Second, calculate expected projection distance between true subspaces. method allows obtaining arbitrary k-th order distance. ...

ژورنال: :پترولوژی 0
علی اصغر سپاهی گرو دانشگاه بوعلی سینا سید جعفر حسینی دوست لیلی ایزدی کیان محمد محجل کفشدوز سید احمد علوی

مطالعه ساختاری در شیست های ژوراسیک منطقه همدان، شواهد دست کم چهار گامه دگرریختی را نشان می دهد که با رخدادهای دگرگونی ناحیه ای و مجاورتی همراه بوده است. پورفیروبلاست های متعددی در این سنگ های دگرگونی به صورت قبل، هم زمان و بعد از گامه های دگرریختی رشد کرده اند. آندالوزیت به صورت قبل از d2 و هم زمان با d2 رشد کرده است. برخی از آندالوزیت ها که در اثر دگرگونی ناحیه ای و مجاورتی تشکیل شده اند توسط ...

Journal: :basic and clinical neuroscience 0
anna maria haarmann institute of neurophysiology, westfälische wilhelms-universität münster, germany. maryam jafarian shefa neuroscience research center, tehran, iran. fariba karimzadeh school of advanced medical technology, tehran university of medical sciences, tehran, iran. ali gorji epilepsy research center, westfälische wilhelms-universität münster, germany.

introduction: spreading depression (sd) is a propagating wave of depolarization followed by depression of the neuroglial activities and can modulate extracellular dopamine concentrations in the neocortex. it has been shown that the dopaminergic system plays a role in migraine. sd has been suggested as a critical phenomenon in the pathophysiology of migraine. the aim of this study was to investi...

Journal: : 2023

Let R be a prime ring with center Z, I nonzero ideal of and D: × → symmetric bi–(α, α)-derivation d the trace D. In present paper, we have considered following conditions: i) [d(x), x]α,α = 0, ii)[d(x), ⊆ Cα,α, iii)(d(x), x)α,α iv)D1(d2(x), x) v)d1(d2(x)) f(x), for all x, y ∈ I, where D1 D2 are two bi-(α, α)-derivations, d1, d2 traces D1, respectively, B: is bi-additive mapping, f B.

Journal: :Endocrinology 1998
S W Kim J W Harney P R Larsen

We developed a sensitive competitive RT-PCR technique for quantitating the ratio of D2 to cyclophilin messenger RNA (mRNA) and used this to study type 2 deiodinase (D2) mRNA regulation. Hyperthyroidism in rats causes a 2- to 3-fold reduction in anterior pituitary and medial basal hypothalamus (MBH). Thyroid hormone (T3) withdrawal increased the D2/cyclophilin ratio 2- to 3-fold over 48 h in bot...

Journal: :Drug metabolism and disposition: the biological fate of chemicals 2009
Minh N Nguyen Andrzej Slominski Wei Li Yun Rui Ng Robert C Tuckey

As well as catalyzing the conversion of cholesterol to pregnenolone for steroid synthesis, cytochrome P450scc (P450scc) can also metabolize vitamins D2 (D2) and D3 (D3). Two products of D2 metabolism by P450scc, 20-hydroxyvitamin D2 and 17,20-dihydroxyvitamin D2, have been identified and shown to exert biological activity on cultured keratinocytes. The aim of this study was to fully characteriz...

Journal: :Molecular pharmacology 2004
Tara A Macey Vsevolod V Gurevich Kim A Neve

Dopamine D2 receptor interactions with arrestins and arrestin-dependent internalization have been characterized using heterologously expressed D2 receptor and arrestins. The purpose of this study was to investigate D2 receptor interaction with endogenous arrestins. Arrestin2 and arrestin3 in striatal homogenates bound to the third cytoplasmic loop of the D2 receptor, and purified arrestin2 and ...

2001
Joke Meheus Leon Horsten Jerzy Perzanowski Liza Verhoeven

In this paper, I present the modal adaptive logic AJ (based on S5) as well as the discussive logic D2 that is defined from it. D2 is the adaptive version of Jaśkowski’s paraconsistent system D2. Like D2, D2 validates all single-premise rules of Classical Logic. However, for formulas that behave consistently, D2 moreover validates all multiple-premise rules of Classical Logic. D2 thus leads to a...

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