1,088 research outputs found

    Angular momentum projection of cranked Hartree-Fock states: Application to terminating bands in A~44 nuclei

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    We present the first systematic calculations based on the angular-momentum projection of cranked Slater determinants. We propose the Iy --> I scheme, by which one projects the angular momentum I from the 1D cranked state constrained to the average spin projection of =I. Calculations performed for the rotational band in 46Ti show that the AMP Iy --> I scheme offers a natural mechanism for correcting the cranking moment of inertia at low-spins and shifting the terminating state up by ~2 MeV, in accordance with data. We also apply this scheme to high-spin states near the band termination in A~44 nuclei, and compare results thereof with experimental data, shell-model calculations, and results of the approximate analytical symmetry-restoration method proposed previously.Comment: 9 RevTeX pages, 8 EPS figures, submitted to Physical Review

    Pattern measurements of a low-sidelobe horn antenna

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    The techniques and results of power pattern measurements of a corrugated horn antenna designed for low sidelobes are reported. The power pattern was measured to levels 90 dB below the main beam maximum in both the E- and H-planes. The measured patterns were found to be in good agreement with predictions from existing theory for the performance of corrugated scalar feeds

    Study of the structure of intermetalics from Fe - Al system after the hot rolling

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    This paper presents the results of structure analysis of Fe - Al alloys after hot rolling deformation. Microstructure analysis were performed before and after deformation using a scanning transmission electron microscopy (STEM) technique. The detailed quantities research of the structures was conducted using scanning electron microscopy (SEM) equipped with the gun with cold field emission and the detector of electron back scattering diffraction (EBSD)

    Ocena aktywności seksualnej kobiet w okresie okołomenopauzalnym

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    Wstęp. Zachowania seksualne kobiet w okresie okołomenopauzalnym ulegają znacznym modyfikacjom. Jeszcze do połowy XX wieku menopauza wiązała się ze stereotypowym pojęciem wygasania potrzeb i zainteresowania seksualnością w tym okresie życia. Współczesne kobiety, które przechodzą okres okołomenopauzalny traktują życie seksualne jako ważny aspekt funkcjonowania społecznego. Cel pracy. Celem pracy była ocena aktywności seksualnej kobiet w okresie okołomenopauzalnym. Materiał i metoda. Badania, metodą sondażu diagnostycznego, przeprowadzono w grupie 150 kobiet w okresie okołomenopauzalnym. Narzędzie stanowił samodzielnie opracowany, niestandaryzowany kwestionariusz ankiety. Uzyskane wyniki badań pod-dano analizie statystycznej. Wnioski. Kobiety w okresie okołomenopauzalnym są aktywne seksualnie. Wiek, miejsce zamieszkania, wykształcenie i stan cywilny warunkują aktywnością seksualną kobiet w okresie okołomenopauzalnym. Natomiast występowanie fizycznych i psychicznych objawów okresu okołomenopauzalnego oraz stosowanie, lub nie stosowanie terapii zastępczej nie mają wpływu na aktywność seksualną kobiet w tym okresie.Introduction. Sexual behaviour in women’s perimeno-pausal period is very likely to change. Until the midtwentieth century, menopause was associated with the stereotypical notion of the termination of needs and interests of sexuality in this peri-od of life. Contemporarily, women who undergo the period of perimenopause treat sexual life as an important aspect of social functioning. Aim of the study. The aim of the study was to assess sexual activity in perimenopausal women. Materials and methods. The research was conducted using the method of diagnostic poll among a group of 150 perimenopausal women. The research tool was the authors’ own, non-standardised questionnaire. The results were analysed statistically. Conclusions. Women in perimenopause are sexually active. Age, place of residence, education and marital status determine sexual activity in perimenopausal women. However, the occurrence of physical and psychological symptoms of perimenopause and the decision whether or not to undergo replacement therapy does not affect the sexual activity of women during this period

    quantitative trait loci associated with the humoral innate immune response in chickens were confirmed in a cross between green legged partridgelike and white leghorn

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    Natural antibodies (NA) create a crucial barrier at the initial steps of the innate humoral immune response. The main role of NA in the defense system is to bind the pathogens at early stages of infection. Different pathogens are recognized by the presence of highly conserved antigen determinant [e. g., lipopolysaccharide (LPS) in gram-negative bacteria or lipoteichoic acid (LTA) in gram-positive bacteria]. In chickens, a different genetic background of NA binds LPS and LTA antigens, encoded by different QTL. The main objective of this work was to confirm known QTL associated with LPS and LTA NA. For this purpose a chicken reference population was created by crossing 2 breeds: a commercial layer, White Leghorn, and a Polish indigenous chicken, Green-Legged Partridgelike. The chromosomal regions analyzed harbored to GGA3, GGA5, GGA6, GGA8, GGA9, GGA10, GGA14, GGA15, GGA18, and GGAZ. The data collected consisted of the NA titers binding LPS and LTA (determined by ELISA at 12 wk of age) as well as the genotypes (30 short tandem repeat markers; average of 3 markers/chromosome, collected for generations F(0), F(1), and F(2)). The analyses were performed with 3 statistical models (paternal and maternal half-sib, line cross, and linkage analysis and linkage disequilibrium) implemented in GridQTL software (http://www.gridqtl.org.uk/). The QTL study of humoral innate immune response traits resulted in the confirmation of 3 QTL associated with NA titers binding LPS (located on GGA9, GGA18, and GGAZ) and 2 QTL associated with NA titers binding LTA (located on GGA5 and GGA14). A set of candidate genes within the regions of the validated QTL has been proposed

    Cholesterol content and intramuscular collagen properties of pectoralis superficialis muscle of quail from different genetic groups

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    ABSTRACT To study growth performance and meat quality traits (cholesterol content and intramuscular collagen properties) of quail, 3 trials were carried out. Trial 1 used males of generation 19 of the egg type Japanese quail (Coturnix japonica) selected previously (until generation 17) for low (n = 8) or high (n = 7) yolk cholesterol content as well as an unselected control (n = 11). Trial 2 used males of meat Pharaoh quail selected earlier (generations 1 to 6 and 9 to 11) on the basis of BW decrease after periodic deprivation of food (high decrease of weight, n = 10; low decrease of weight, n = 8) and unselected control (n = 10). Trial 3 compared males of English White quail, Manchurian Golden quail, and British Range quail. The birds were raised to 35 d of age. Quail were fed ad libitum commercial diets according to age and had free access to water. At slaughter, all birds were individually weighed (after a fasting period of 12 h), stunned, and decapitated. After the refrigeration period (24 h at 4°C), the left pectoralis superficialis muscle was removed from the carcasses, weighed, vacuum packaged, and stored frozen (−40°C) for analyses of cholesterol and intramuscular collagen (IMC; collagen and crosslink concentration). In trial 1, divergent selection for yolk cholesterol content did not significantly influence pectoralis superficialis muscle weight and IMC crosslinking of Japanese quail, whereas it significantly reduced growth and IMC amount. In addition, it had greater effect on the amount of cholesterol in meat; in fact, the meat of quail with low yolk cholesterol content contained lower cholesterol (−36.6%) than that of birds with high yolk cholesterol content. In trial 2, divergent selection on the basis of Pharaoh quail BW decrease altered IMC crosslinking, leading to variability in meat tenderness of Pharaoh quail. In trial 3, English White quail were significantly heavier than the other breeds

    Factors Associated with Immunization Opinion Leadership among Men Who Have Sex with Men in Los Angeles, California

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    We sought to identify the characteristics of men who have sex with men (MSM) who are opinion leaders on immunization issues and to identify potential opportunities to leverage their influence for vaccine promotion within MSM communities. Using venue-based sampling, we recruited and enrolled MSM living in Los Angeles (N = 520) from December 2016 to February 2017 and evaluated characteristic differences in sociodemographic characteristics, health behaviors, and technology use among those classified as opinion leaders versus those who were not. We also asked respondents about their past receipt of meningococcal serogroups A, C, W, and Y (MenACWY) and meningococcal B (MenB) vaccines, as well as their opinions on the importance of 13 additional vaccines. Multivariable results revealed that non-Hispanic black (aOR = 2.64; 95% CI: 1.17–5.95) and other race/ethnicity (aOR = 2.98; 95% CI: 1.41–6.29) respondents, as well as those with a history of an STI other than HIV (aOR = 1.95; 95% CI: 1.10–3.48), were more likely to be opinion leaders. MenACWY (aOR = 1.92; 95% CI: 1.13–3.25) and MenB (aOR = 3.09; 95% CI: 1.77–5.41) vaccine uptake, and perceived importance for these and seven additional vaccines, were also associated with being an opinion leader. The results suggest that the co-promotion of vaccination and other health promotion initiatives via opinion leaders could be a useful strategy for increasing vaccination among MSM

    Study of Deformation Effects in the Charged Particle Emission from 46Ti

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    The 46Ti compound nucleus, as populated by the fusion-evaporation reaction 27Al + 19F at the bombarding energy of 144 MeV, has been investigated by charged particle spectroscopy using the multidetector array ICARE at the VIVITRON tandem facility of the IReS (Strasbourg). The light charged particles have been measured in coincidence with evaporation residues. The CACARIZO code, a Monte Carlo implementation of the statistical-model code CASCADE, has been used to calculate the spectral shapes of evaporated alpha-particles which are compared with the experimental spectra. This comparison indicates the possible signature of large deformations of the compound nucleus.Comment: 6 pages, 4 figures, Proceedings od the Zakopane 20004 Symposium, to be published in Acta Phys. Pol. B36 (2005

    Tailing Dam Zelazny Most Environmental Hazard

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    The factors governing the geotechnical stability of copper tailing dam Żelazny Most, the largest in Europe, have been discussed. The efficiency of pumping wells barrier against outflow of contaminated ground water has been predicted for a period of next 15 years

    effect of in ovo administration of different synbiotics on carcass and meat quality traits in broiler chickens

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    ABSTRACT The aim of this study was to examine the effect of in ovo synbiotic administration on slaughter performance and meat quality traits of broiler chickens. On day 12 of incubation, 5,850 eggs (Cobb 500 FF) were randomly divided into 3 experimental groups and automatically injected in ovo with physiological saline (control, C) and 2 different synbiotic formulations (SYN1: Lactobacillus salivarius + galactooligosaccharides; SYN2: Lactobacillus plantarum + raffinose family oligosaccharides). After hatching, 240 males were randomly chosen (80 chicks per group) and split into 8 replicate pens (10 birds per pen). At 42 d of age, 15 birds per treatment were weighed and slaughtered. In ovo synbiotic administration had a low effect on investigated traits, but depends on the kind of synbiotic administered. Both synbiotic formulations did not affect final BW, weight, and yield of carcass and pectoral muscle (PM); likewise, physicochemical properties (pH, color, water holding capacity), intramuscular collagen properties, and cholesterol content of PM were not affected by treatment. Synbiotic administration reduced (P = 0.061) the lipid content compared with C group, markedly (
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