this research has been done for studying the effect of split application of nitrogen fertilizer on growth indexes and yield of three hybrids of grain corn in shahrood. a split plot experiment based on randomized complete block design with four replications was carried out in 2007. three hybrids of corn (double cross 370, single cross 447, single cross 499) were placed in main plots and split ap...

Rust, incited by Uromyces appendiculatus^ is a major disease in common bean {Phaseolus vulgaris L,). Plant growth habit is also an important trait. Indeterminate growth habit was first reported to be controlled by a single dominant gene (Fin) (Lamprecht, 1935). Molecular markers such as isozymes, RFLP, and RAPD, have been used to tag genes for many traits, particularly disease resistance in sev...

From a single wild-type strain of Ehrlich ascites tumor, sublines resistant to daunorubicin, etoposide, and cis-diamminedichloroplatinum(II) have been developed in vivo. Different levels of resistance were achieved after 4 to 8 months for anthracyclines (greater than 32-fold), cis-diamminedichloroplatinum(II) (4-fold), and etoposide (greater than 6-fold). Anthracycline resistance was associated...

background china is a country with a high prevalence of hepatitis b. as a special population, migrant workers are more vulnerable to hepatitis b. objectives the present study was conducted to gain insight into the prevalence of hepatitis b and knowledge about hepatitis b among migrant workers in shandong province, china, as well as to explore a series of strategies for preventing and controllin...

BACKGROUND AND PURPOSE Polyglutamine expansion spinocerebellar ataxias are autosomal dominant slowly progressive neurodegenerative diseases with no current treatment. MR imaging is the best-studied surrogate biomarker candidate for polyglutamine expansion spinocerebellar ataxias, though with conflicting results. We aimed to review quantitative central nervous system MR imaging technique finding...

We outline a new kinetic theory for positrons in soft matter, which blends together cross sections for positrons scattering from single molecules, with the structure function of the medium as a whole. Numerical results are presented for positrons in liquid argon, where negative differential conductivity arises from both positron formation and the structure of the medium.

In this paper, we consider a semiparametric single index panel data model with cross–sectional dependence, high–dimensionality and stationarity. Meanwhile, we allow fixed effects to be correlated with the regressors to capture unobservable heterogeneity. Under a general spatial error dependence structure, we then establish some consistent closed–form estimates for both the unknown parameters an...

We report the synthesis of single-crystalline VO2 nanowires with rectangular cross sections using a vapor transport method. These nanowires have typical diameters of 60 (+/-30) nm and lengths up to >10 mum. Electron microscopy and diffraction measurements show that the VO2 nanowires are single crystalline and exhibit a monoclinic structure. Moreover, they preferentially grow along the [100] dir...