نتایج جستجو برای: ge

تعداد نتایج: 19943  

2003
P. H. Tan K. Brunner

A detailed Raman characterization of the structural properties of as-grown and annealed self-assembled Si/Ge dot multilayers is reported in this paper. Several new modes in as-grown or annealed Si/Ge dots and a frequency splitting of 4.2 cm between the longitudinal ~LO! and transversal optical ~TO! Ge-Ge modes in as-grown Si/Ge dots are observed in Raman spectra. An average Ge content of 0.8 an...

Journal: :ACS nano 2012
Jianshi Tang Chiu-Yen Wang Min-Hsiu Hung Xiaowei Jiang Li-Te Chang Liang He Pei-Hsuan Liu Hong-Jie Yang Hsing-Yu Tuan Lih-Juann Chen Kang L Wang

To explore spintronics applications for Ge nanowire heterostructures formed by thermal annealing, it is critical to develop a ferromagnetic germanide with high Curie temperature and take advantage of the high-quality interface between Ge and the formed ferromagnetic germanide. In this work, we report, for the first time, the formation and characterization of Mn(5)Ge(3)/Ge/Mn(5)Ge(3) nanowire tr...

Journal: :Journal of virology 2007
Qingxue Li Tammy Krogmann Mir A Ali Wei-Jen Tang Jeffrey I Cohen

Varicella-zoster virus (VZV) glycoprotein E (gE) is required for VZV infection. Although gE is well conserved among alphaherpesviruses, the amino terminus of VZV gE is unique. Previously, we showed that gE interacts with insulin-degrading enzyme (IDE) and facilitates VZV infection and cell-to-cell spread of the virus. Here we define the region of VZV gE required to bind IDE. Deletion of amino a...

2006
Dunwei Wang

As a promising electronic material, Ge nanowire (GeNW) has attracted much attention for its low band gaps, high mobilities, and unprecedented dimensions. This article reviews recent research and advancement on this topic and summarizes many aspects of GeNWs, including preparation, surface chemistry, physical properties, functional devices, and controlled assembly. It is shown that GeNWs can be ...

2012

In describing the testing of the AN/ALQ-131 jammer, under the heading “Band 3 Ineffective Against Some Threats”, GAO Report /NSIAD-1995-47, said: “Developmental testing conducted after the Band 3 entered production has shown that the system has serious performance problems. New, but preliminary, test results compiled after the draft of this report was prepared indicate some improvement in perfo...

Journal: :Antimicrobial agents and chemotherapy 1993
B P Goldstein M Berti F Ripamonti A Resconi R Scotti M Denaro

MDL 62,879 (GE2270 A) is a new peptide antibiotic that inhibits protein synthesis through an interaction with elongation factor Tu. MDL 62,879 was very active against gram-positive clinical isolates, particularly staphylococci and enterococci, for which MICs for 90% of isolates were < or = 0.13 micrograms/ml. It was equally active against isolates resistant to beta-lactams, erythromycin, gentam...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ایلام - دانشکده علوم پایه 1391

در این پایان‏نامه با استفاده از نرم‏افزار گوسین 98 نسخه a7 محاسبات کامل از اساس و dft به وسیله روش b3lyp و مجموعه پایه 6-311++g**، بر روی حالت های یکتایی و سه‏تایی تعداد زیادی از گونه های حدواسط دو ظرفیتی شامل عناصر گروه 14 جدول تناوبی که همگی همولوگ های کاربن با فرمول کلی xc6h7m و r2c6h6m که m = c, si, ge, sn, pb، (x = -nh2, -oh, -ch3, -h, -br, -cl, -f, -cf3, -no2) و (r = -ch3, -i-pr, -tert-bu...

2009
Monika L. Amadoruge Arnold L. Rheingold Charles S. Weinert

The title compound, C(56)H(56)Ge(4)O(2)·2CH(2)Cl(2) or Tol(8)Ge(4)O(2)·2CH(2)Cl(2) (Tol = p-CH(3)C(6)H(4)), was obtained serendipitously during the attempted synthesis of a branched oligogermane from Tol(3)GeNMe(2) and PhGeH(3). The mol-ecule contains an inversion center in the middle of the Ge(4)O(2) ring which is in a chair conformation. The Ge-Ge bond distance is 2.4418 (5) Å and the Ge-O bo...

Journal: :Chemical communications 2006
Shaun P Green Cameron Jones Peter C Junk Kai-Alexander Lippert Andreas Stasch

The neutral germanium(i) dimers, [{Ge(Piso)}(2)] and [{Ge(Giso)}(2)], Piso = [(ArN)(2)CBu(t)](-), Giso = [(ArN)(2)CNPr(i)(2)](-), Ar = C(6)H(3)Pr(i)(2)-2,6, which are stabilised by bulky amidinate and guanidinate ligands respectively, have been prepared by reduction of the corresponding germanium(ii) chlorides, [Ge(Piso)Cl] and [Ge(Giso)Cl]; theoretical studies suggest that the Ge-Ge bonds of [...

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