نتایج جستجو برای: c70

تعداد نتایج: 752  

Journal: :Physical review. B, Condensed matter 1995
Sachidanandam Lubensky Harris

We construct the most general effective Hamiltonian for the C70 solid and study the long-wavelength dynamics of the system near the high-temperature orientational ordering phase transition. We derive neutron scattering cross sections, NMR line shifts, and T1 from our theory and suggest some experiments to further constrain our Hamiltonian.

2002
Danyelle M. Townsend Hongxie Shen Alexandra L. Staros Laurent Gaté Kenneth D. Tew

Human ovarian carcinoma cells (C70 and C200) made resistant to cisplatin from A2780 cells demonstrated an 20-fold resistance to the drug. These same cell lines showed no collateral resistance (as compared with the wild-type) to a novel glutathione S-transferase activated prodrug { -glutamyl-amino[2-ethylN,N,N ,N -tetrakis (2-chloroethyl) phosphorodiamidate]sulfonyl-propionyl-(R)-( ) phenylglyci...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1994
I Bucsi R Aniszfeld T Shamma G K Prakash G A Olah

A purification procedure for C60 from the fullerene extract has been developed using the differential complexation of C60 and C70 with AlCl3 (or its conjugate acid) in CS2 solution. In addition to pure C60 (>99.8%), the procedure also provides C70-enriched fullerene mixture.

2015
Qiang Li

The acknowledgement text is corrected in four articles: Li, Wang & Ye [Acta Cryst. (2014), C70, 992-997], Li & Wang [Acta Cryst. (2014), C70, 1054-1056], Li [Acta Cryst. (2015), C71, 65-68] and Li, Wang & Zhou [Acta Cryst. (2015), C71, 93-96].

هدف از این پژوهش، محاسبه آنالیز حساسیت پارامترهای سینتیکی راکتور تحقیقاتی تهران با در نظر گرفتن اثر فیدبک‌های دمایی با استفاده از کد MCNPX است. پارامترهای سینتیکی شامل، کسرمؤثر نوترون‌های تأخیری ( βeff) و زمان متوسط تولید نوترون (Λ) می‌باشند. محاسبه دقیق این پارامترها برای عملکرد ایمنی و کنترل راکتورها بسیار مهم است و اهمیت به‌ سزایی در تجزیه و تحلیل دینامیکی سیستم دارد. در این تحقیق با تغییر د...

Journal: :Chemical Physics Letters 1994

2014
Mark Bodner Jiri Patera Marzena Szajewska

We describe the existence and structure of large fullerenes in terms of symmetry breaking of the C60 molecule. Specifically, we describe the existence of C70 in terms of breaking of the icosahedral symmetry of C60 by the insertion into its middle of an additional H2 decagon. The surface of C70 is formed by 12 regular pentagons and 25 regular hexagons. All 105 edges of C70 are of the same length...

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