On the Electronic Energy of a One-electron Diatomic Molecule near the United Atom

Electric energy behavior for ground state of one-electron heteronuclear diatomic molecule near united ato

The Complex‐Heterozygotes of Oenothera grandiflora L'Her.

Complex‐heterozygotes discovered in populations of O. grandiflora in Alabama are composed of a typical grandiflora (B) complex and an altered B complex which modifies the phenotype in the direction of O. villosa (A). A cytogenetic analysis of the new complex, designated B A , is reported including results of its compatibility with different plastomes. The evidence suggests that the B A complex resulted from hybridization between O. grandiflora and the pollen complex of the sympatric O. biennis .Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/106067/1/j.1438-8677.1992.tb00316.x.pd

Appropriate Serological Testing in Pregnancy

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/72557/1/j.1423-0410.1992.tb01243.x.pd

Neutron star mass and radius measurements from atmospheric model fits to X-ray burst cooling tail spectra

Observations of thermonuclear X-ray bursts from accreting neutron stars (NSs) in low-mass X-ray binary systems can be used to constrain NS masses and radii. Most previous work of this type has set these constraints using Planck function fits as a proxy: both the models and the data are fit with diluted blackbody functions to yield normalizations and temperatures which are then compared against each other. Here, for the first time, we fit atmosphere models of X-ray bursting NSs directly to the observed spectra. We present a hierarchical Bayesian fitting framework that uses state-of-the-art X-ray bursting NS atmosphere models with realistic opacities and relativistic exact Compton scattering kernels as a model for the surface emission. We test our approach against synthetic data, and find that for data that are well-described by our model we can obtain robust radius, mass, distance, and composition measurements. We then apply our technique to Rossi X-ray Timing Explorer observations of five hard-state X-ray bursts from 4U 1702-429. Our joint fit to all five bursts shows that the theoretical atmosphere models describe the data well but there are still some unmodeled features in the spectrum corresponding to a relative error of 1-5% of the energy flux. After marginalizing over this intrinsic scatter, we find that at 68% credibility the circumferential radius of the NS in 4U 1702-429 is R = 12.4+-0.4 km, the gravitational mass is M=1.9+-0.3 Msun, the distance is 5.1 < D/kpc < 6.2, and the hydrogen mass fraction is X < 0.09.Comment: 15 pages, 11 figures, submitted to A&

Cytological analysis of complex-heterozygotes in populations of Oenothera grandiflora ( Onagraceae ) in Alabama

Genetic analysis of unusual complex-heterozygous genotypes in populations of O. grandiflora from Alabama (USA) has shown that these strains are composed of a typical grandiflora (B) complex and an altered B complex (designated as B A ) which probably contains genetic elements derived from an A genotype such as the beta complex of O. biennis group 1. Analysis of the meiotic configurations of artificial hybrids between the new strains and a series of complexes of known segmental arrangement allowed determination of the arrangements of the unknown complexes. These data are evidence for origin of the altered B complexes.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/41635/1/606_2004_Article_BF00937779.pd

Прогнозирование прочности стальных труб, поврежденных водной коррозией

Показана возможность прогноза долговечности поврежденных стальных труб. Вследствие электрохимического взаимодействия металла и воды образуются щелеобразные коррозионные дефекты, которые являются концентраторами напряжений и приводят к локальному перенапряжению материала и разрушению труб. Долговечность труб рассчитывается по скорости роста коррозионных дефектов и степени концентрации напряжений. С повышением температуры скорость электрохимической коррозии увеличивается, что приводит к снижению долговечности труб.Показана можливість прогнозування довговічності пошкоджених сталевих водопровідних труб. Внаслідок електрохімічної взаємодії металу і води виникають щілиноподібні корозійні дефекти, що є концентраторами напружень і зумовлюють локальну перенапругу матеріалу та руйнування труб. Довговічність труб розраховується по швидкості росту корозійних дефектів і ефективності концентрації напружень. Із підвищенням температури швидкість електрохімічної корозії збільшується, що призводить до зниження довговічності труб.We have demonstrated a possibility of predicting service life of damaged steel pipes. The electrochemical interaction of the metal and water causes initiation of crack-like corrosive defects, which, being stress concentrators, induce local overstressing of the material and destruction of pipes. One can calculate the durability of a pipe from the corrosion crack-growth rate and the degree of the stress concentration. An increase in temperature accelerates electrochemical corrosion, which results in the reduction of life of water pipes

The Statistical Multifragmentation Model with Skyrme Effective Interactions

The Statistical Multifragmentation Model is modified to incorporate the Helmholtz free energies calculated in the finite temperature Thomas-Fermi approximation using Skyrme effective interactions. In this formulation, the density of the fragments at the freeze-out configuration corresponds to the equilibrium value obtained in the Thomas-Fermi approximation at the given temperature. The behavior of the nuclear caloric curve at constant volume is investigated in the micro-canonical ensemble and a plateau is observed for excitation energies between 8 and 10 MeV per nucleon. A kink in the caloric curve is found at the onset of this gas transition, indicating the existence of a small excitation energy region with negative heat capacity. In contrast to previous statistical calculations, this situation takes place even in this case in which the system is constrained to fixed volume. The observed phase transition takes place at approximately constant entropy. The charge distribution and other observables also turn out to be sensitive to the treatment employed in the calculation of the free energies and the fragments' volumes at finite temperature, specially at high excitation energies. The isotopic distribution is also affected by this treatment, which suggests that this prescription may help to obtain information on the nuclear equation of state

1975 commercial grape spray schedule

"MP 263, 2/75/1.5M"PRE-BLOOM SPRAYS -- BLOOM SPRAYS -- POST-BLOOM SPRAYS -- SUMMER SPRAYSBy W.R. Enns and W.S. Craig (Department of Entomology), A.E. Gaus (Department of Horticulture) and P.W. Steiner, H.W. Shaffer, and E.W. Palm (Department of Plant Pathology