نتایج جستجو برای: pr oblem s olving

تعداد نتایج: 737608  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه الزهراء - دانشکده علوم پایه 1394

در این کار پژوهشی به مطالعه کاربرد مواد نانو متخلخل سیلیسی عامل دار شده با گروه های آمینی (sba-pr-nh2) در واکنش های چند جزیی و کلیک پرداخته ایم. اولین مورد همان واکنش سه جزئی تک ظرفی از ترکیبات متیلن کربونیلی، اسنفتن کوئینون و مالونونیتریل ها می باشد که محصولات واکنش خواص ضد میکروبی از خود نشان دادند. دومین مورد شامل روش ساده ای است که مشتقات اسپایرواسنفتلنی را در دمای اتاق از تراکم اسنفتن کوئی...

Majid Sharbatdaran Naser Ghaemian Novin Nikbakhsh Sepideh Siadati,

Background and Objectives: Breast cancer is the most common malignancy among women in the world. The aim of this study was to assess estrogen receptor (ER), progesterone receptor (PR) and HER-2/neu of infiltrating ductal carcinoma (IDC) with tumor size, histologic grade, lymph node metastasis and age. Methods: This study was carried out on 300 tissue blocks ofpatients with ID...

Journal: :Inf. Process. Lett. 1996
Wakaha Ogata Keiichi Sakano Kaoru Kurosawa

This paper describes a weak sense majority-vote technique for a k symbol function g(z) as follows. If a probabilistic polynomial time algorithm A exists such that Pr[A(z) = g(z)] 1=k + , then s 4 = 2 k 1 1 probabilistic polynomial time algorithms f ^ A 1 ; : : : ; ^ A s g exist such that for 8z 2 f0; : : : ; k 1g , there exists ^ A i 2 f ^ A 1 ; : : : ; ^ A s g such that Pr[ ^ A i (z) = g(z)] 1...

Journal: :Journal of leukocyte biology 1997
H J Huang C R Ross F Blecha

The proline-arginine (PR) -rich antibacterial peptide, PR-39, kills bacteria by a non-pore-forming mechanism. Because this neutrophil peptide possesses several distinct functional properties and because other antimicrobial peptides are chemoattractants, we sought to determine whether PR-39 was a chemoattractant for porcine leukocytes. The peptide was synthesized by the solid-phase method using ...

1994
Akira FUJII

Fisher’s phenomenological renormalization method is used to calculate the mass gap and the correlation length of the O(N) nonlinear σ model on a semi-compact space S1 ×R2. This shows that the ultraviolet momentum cut-off does not conflict with the infrared cut-off along the S1 direction. The mass gap on S2 × R1 is also discussed. ∗e-mail address: [email protected] 1 The O(N) nonlinear σ (NLσ...

2017
Kalpana D Acharya Sabin A Nettles Katherine J Sellers Dana D Im Moriah Harling Cassandra Pattanayak Didem Vardar-Ulu Cheryl F Lichti Shixia Huang Dean P Edwards Deepak P Srivastava Larry Denner Marc J Tetel

Progestins bind to the progestin receptor (PR) isoforms, PR-A and PR-B, in brain to influence development, female reproduction, anxiety, and stress. Hormone-activated PRs associate with multiple proteins to form functional complexes. In the present study, proteins from female mouse hypothalamus that associate with PR were isolated using affinity pull-down assays with glutathione S-transferase-t...

Journal: :Fertility and sterility 2008
Serena Dovey Rita M Sneeringer Alan S Penzias

OBJECTIVE To evaluate the outcomes of a large cohort of patients undergoing fertility treatment with clomiphene citrate and intrauterine insemination. DESIGN A retrospective cohort study. SETTING Boston IVF, a large university-affiliated reproductive medicine practice. PATIENT(S) A total of 4,199 cycles performed in 1,738 infertility patients between September 2002 and July 2007. INTERV...

Journal: :Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 2015
Shylo E Wardyn Brett M Forshey Sarah A Farina Ashley E Kates Rajeshwari Nair Megan K Quick James Y Wu Blake M Hanson Sean M O'Malley Hannah W Shows Ellen M Heywood Laura E Beane-Freeman Charles F Lynch Margaret Carrel Tara C Smith

BACKGROUND Livestock-associated Staphylococcus aureus (LA-SA) has been documented worldwide. However, much remains unknown about LA-SA colonization and infection, especially in rural environments. METHODS We conducted a large-scale prospective study of 1342 Iowans, including individuals with livestock contact and a community-based comparison group. Nasal and throat swabs were collected to det...

Journal: :Chemical communications 2005
Shanmugaperumal Kannan Charles L Barnes Paul B Duval

A series of uranyl(VI) dihalide complexes UO2X2L2 (X = Cl, Br) supported by organic amide ligands (L = R'C(O)NR2; R' = i-Pr; R = i-Pr, i-Bu, s-Bu) offers the versatile combination of facile synthesis using benchtop methods, air-stable crystalline solids obtained in high yield, high solubility in common organic solvents and tunable steric/electronic properties.

Journal: :Journal of the American Chemical Society 2009
Kristy A McNitt Kumar Parimal Andrew I Share Albert C Fahrenbach Edward H Witlicki Maren Pink D Kwabena Bediako Christina L Plaisier Nga Le Lee P Heeringa Douglas A Vander Griend Amar H Flood

The reduction of a redox-active ligand is shown to drive reversible switching of a Cu(I) [2]pseudorotaxane ([2]PR(+)) into the reduced [3]pseudorotaxane ([3]PR(+)) by a bimolecular mechanism. The unreduced pseudorotaxanes [2]PR(+) and [3]PR(2+) are initially self-assembled from the binucleating ligand, 3,6-bis(5-methyl-2-pyridine)-1,2,4,5-tetrazine (Me(2)BPTZ), and a preformed copper-macrocycle...

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