Several modifications that have been made to the NDDO core-core interaction term and to the method of parameter optimization are described. These changes have resulted in a more complete parameter optimization, called PM6, which has, in turn, allowed 70 elements to be parameterized. The average unsigned error (AUE) between calculated and reference heats of formation for 4,492 species was 8.0 kc...

OBJECTIVE Low vitamin D status is common among healthy black and white adolescents residing at southern U.S. latitudes with a year-round sunny climate. Thus we aimed to study the relationships between circulating 25-hydroxyvitamin D [25(OH)D] and cardiometabolic risk factors in this population. RESEARCH DESIGN AND METHODS 25(OH)D concentrations were measured with liquid chromatography tandem ...

Both properties do not depend on the choice of coordinates. The index ind (x) is the number of negative eigenvalues of Hess (f) (x). Let mp = mp (f) be the number of critical points of index p. Let bp = bp (M) = dimH (M) be the dimension of the p de Rham cohomology group. 0→ Ω (M) d −→ Ω (M) d −→ ... d −→ Ω (M) d −→ 0 This is called the de Rham complex. Note that d = 0. If ω = dα, then dω = 0. ...

Overcoming the intrinsic instability and preserving unique electronic properties are key challenges for practical applications of black phosphorus (BP) under ambient conditions. Here, it is demonstrated that molecular heterostructures BP hexaazatriphenylene derivatives (BP/HATs) enable improved environmental stability charge transport properties. The strong interfacial coupling transfer between...

Low salt intake and high fruit and vegetable intake (FVI) have been shown to reduce blood pressure (BP) in adults. Longitudinal data on the independent effect of both FVI and salt intake on BP in healthy normotensive children are not available yet. In the present study, we aimed to characterise the concomitant influence of salt intake and FVI on BP development throughout childhood and adolescen...

BACKGROUND Accurate blood pressure (BP) readings and correctly interpreting the obtained values are of great importance. However, there is considerable variation in the different BP measuring methods suggested in guidelines and used in hypertension trials. OBJECTIVE To compare the different methods used to measure BP; measuring once, the method used for a large study such as the UKPDS, and th...

The main goal of the present paper is to study the local solvability of semilnear partial differential operators of the form F(u) = P(D)u + f (x, Q1(D)u, ......, QM (D)u), where P(D), Q1(D), ..., QM (D) are linear partial differntial operators of constant coefficients and f (x, v) is a C∞ function with respect to x and an entire function with respect to v. Under suitable assumptions on the nonl...

Postzygotic reproductive barriers such as sterility and lethality of hybrids are important for establishing and maintaining reproductive isolation between species. Identifying the causal loci and discerning how they interfere with the development of hybrids is essential for understanding how hybrid incompatibilities (HIs) evolve, but little is known about the mechanisms of how HI genes cause hy...

Vol. 26 No. 5, 2014 649 Received August 28, 2013, Revised September 28, 2013, Accepted for publication October 5, 2013 Corresponding author: Bong Seok Shin, Department of Dermatology, Chosun University Hospital, 365 Pilmun-daero, Dong-gu, Gwangju 501-717, Korea. Tel: 82-62-220-3130, Fax: 82-62-222-3215, E-mail: [email protected] This is an Open Access article distributed under the terms of th...