Rational design of light-capturing properties requires understanding the molecular and electronic structure of chromophores in their native chemical or biological environment. We employ here large-scale quantum chemical calculations to study the light-capturing properties of retinal in recently designed human cellular retinol binding protein II (hCRBPII) variants (Wang et al. Science, 2012, 338...

OBJECTIVE To investigate the effectiveness of educational poster on improving secondary school students' knowledge of emergency management of dental trauma. METHODS A cluster randomised controlled trial was conducted. 16 schools with total 671 secondary students who can read Chinese or English were randomised into intervention (poster, 8 schools, 364 students) and control groups (8 schools, 3...

A radio source of the Fanaroff–Riley type II with the angular size of 11.3 arc min is identified with an optical galaxy at z = 0.229. Thus, the projected linear extent of the radio structure is 3.14 Mpc which makes it the third largest classical double radio source known after 3C236 and WNB2147+816. The highfrequency VLA observations, a galaxy identification and its optical spectroscopy are rep...

فاصله بین سقوط ایلخانان (736 ق) تا روی کار آمدن صفویان (907 ق) از پرآشوب­ترین و آشفته­ترین دوره­های تاریخ ایران است که عرصه را برای نضج و قدرت­گیری حکومت­های مختلفی در گوشه و کنار ایران فراهم آورد. جغرافیای سیاسی قبایل کُرد در غرب و شمال غرب که صحنه قدرت­نمایی آل جلایر، تیموریان، قراقویونلوها و آق قویونلوها بود از جمله حوزه­های موردتوجه و فعالیت حکومت­های مورد اشاره بود. پژوهش حاضر درصدد پژوهش د...

Z. Naturforsch. 53 b, 1343-1351 (1998); eingegangen am 21. Juli 1998 Aluminium Neodymium Chloride, Decomposition, Thermochemical Data, Enthalpy, Entropy The thermodynamical data of solid and gaseous aluminium neodymium chloride have been obtained by determination of the decomposition equilibria (of solid) from total pressure mea­ surements and chemical transport reactions (gaseous). The melting...

pert panel on integrated guidelines for cardiovascular health and risk reduction in children and adolescents: full report, 2011 [updated January 5, 2011, and January 5, 2012]. Available at: www.nhlbi.nih.gov/guidelines/ cvd_ped/index.htm. Accessed August 7, 2012 4. Goodwin JS, Singh A, Reddy N, Riall TS, Kuo YF. Overuse of screening colonoscopy in the Medicare population. Arch Intern Med. 2011;...

In this correspondence, we reply to the comments in Gu et al. [“Comments on ‘A blind signal separation method for multiuser communications,’” IEEE Transactions on Signal Processing, vol. 55, no. 5, pp. 2355–2356, May 2007]. We explain that the global convergence analysis of the method in Castedo et al. [“A blind signal separation method for multiuser communications,” IEEE Transactions on Signal...

The aim of this article is to study an optimal control problem for a system of nonlinear elliptic equations with Dirichlet boundary conditions, u x a x x c x u x eu x u x x , Ž . Ž . Ž . Ž . Ž . Ž . Ž . Ž . Ž . x , 1.1 Ž . x b x u x d x x f x u x x , Ž . Ž . Ž . Ž . Ž . Ž . Ž . Ž . Ž . x , u x x 0, on , Ž . Ž . 1, 2 The authors were supported in part by CICYT, Ministry of Education and Culture,...

We present spectra of QSOs 1343+266A, B, covering Ly to C IV emission at 2 A resolution, and nd further evidence that this system is not gravitationally lensed. We see, however, a large number of Ly and some C IV absorption features common to both spectra. The frequency of C IV lines in common indicates that these absorbers have a radius close to the sightline separation, 39 h 1 kpc (q o = 0:5)...