Malea M. Murphy,1,2,3 Alexandra C. Keefe,1,2 Jennifer A. Lawson,1 Steven D. Flygare,1 Mark Yandell,1 and Gabrielle Kardon1,* 1Department of Human Genetics, University of Utah, Salt Lake City, UT 84112, USA 2Co-first author 3Present address: Children’s Research Institute at UT Southwestern, Dallas, TX 75390, USA *Correspondence: [email protected] http://dx.doi.org/10.1016/j.stemcr.2014.0...

UNLABELLED During biosynthesis of [NiFe]-hydrogenase 2 (Hyd-2) of Escherichia coli, a 15-amino-acid C-terminal peptide is cleaved from the catalytic large subunit precursor, pro-HybC. This peptide is removed only after NiFe(CN)2CO cofactor insertion by the Hyp accessory protein machinery has been completed, suggesting that it has a regulatory function during enzyme maturation. We show here that...

Absolute total cross section (TCS) for electron scattering from hexafluoroacetone (HFA: (CF3)2CO) molecules has been measured from 1 to 400 eV, employing a linear electron-transmission technique. The TCS energy function for the electron–HFA collision has two broad enhancements: the first, visible between 2 and 28 eV, can be partly attributed to resonant processes; the second is much broader, ce...

These inequalities express the fact that no curve of order k and defined at the p points can meet the net in more than yok points. Coble' has conjectured that the conditions (1) and (2) are sufficient as well as necessary. In this paper we will show that the conditions (2) are actually sufficient. Indeed, the less stringent set of inequalities given in (5) will suffice. The notation and point o...

Very few nitrosyl derivatives of the first transition elements are known [1, 2], [^-C5HsCr(NO)2]2 has been obtained by reduction of ^-CsHsCrNOCl with sodium borohydride [3]. The only known cyclopentadienylnitrosyl vanadium complexes are T?-C5H5V(NO)2CO [4] and the cation [>?-C5H5V(NO)3]+ [5]. The most important methods used to obtain these complexes consist of treatment of carbonyl complexes wi...

قدرت تفکیک دستگاه طیف‌نگار جرمی به صورت مستقیم شدت یون خروجی و انرژی آن بستگی دارد. مقدار تولید شده جریان باریکه الکترونی وابسته است. از جمله وظایف مدار کنترل چشمه برخورد تنظیم برای رسیدن بهینه می‌باشد. در ساخت پارامترهایی نظیر تثبیت آن، دقیق پتانسل الکتریکی لنز الکترودهای یونی بسیار حایز اهمیت این مقاله با قابلیت انتشار الکترون، پتانسیل نقاط طراحی ساخته شد. کنترلر بر روی طیف نگار 44Varian MAT ...

We present high resolution, Combined Array for Research in Millimeter-Wave Astronomy (CARMA), λ=1mm observations of several molecular species toward Orion-KL. These are the highest spatial and spectral resolution 1mm observations of these molecules to date. Our observations show that ethyl cyanide [C2H5CN] and vinyl cyanide [C2H3CN] originate from multiple cores near the Orion hot core and IRc7...

در این مقاله، به بررسی اثر پارامترهای کاری گوناگون بر شکل تپ‌های خروجی یک لیزر 2CO تپی فشار اتمسفری پرتکرار دست‌ساز (با آهنگ تکرار تا kHz 1) پرداخته شده است. راستا، عوامل گوناگونی هم­چون: نسبت گاز 2N، He و بازتابندگی آینه جلویی تغییر داده شدند انرژی گسیلی هر از حالت‌ها ثبت مشخصه‌یابی شدند. نشان شد که با گازهای 2N He، می‌توان دیرش زمانی میخه دنباله‌ی تپ‌ها را بازه‌ی ns 140-95 µs 5/3-5/1 تنظیم نم...