نتایج جستجو برای: cib
تعداد نتایج: 347 فیلتر نتایج به سال:
We study the evolution of stellar content and the chemical enrichment of the universe averaged over the whole population of galaxies by means of a series of chemo–spectrophotometric models that take into account the metallicity and dust obscuration effects. We investigate various classes of cosmic star formation rates (CSFR) histories consistent with current estimations. We are able to reproduc...
Abstract Funding Acknowledgements Type of funding sources: None. Background Calibrated integrated backscatter (cIB) derived by 2D echocardiography quantifies myocardial ultrasound reflectivity, and it has been used in previous studies as a surrogate for fibrosis. Before the advent other cardiac imaging techniques, was major focus tissue characterization research. Purpose We examined whether cIB...
We discuss interpretation of the cosmic infrared background (CIB) anisotropies detected by us recently in the Spitzer IRAC based measurements. The fluctuations are approximately isotropic on the sky consistent with their cosmological origin. They remain after removal of fairly faint intervening sources and must arise from a population which has a strong CIB clustering component with only a smal...
The early somatic blastomeres founding the tissues in the C. elegans embryo are derived in a stem-cell-like lineage from the P cells. We have isolated maternal effect lethal mutations defining the gene cib-1 in which the P cells, P1-P3, skip a cell cycle and acquire the fates of only their somatic daughters. Therefore, the cib-1 gene is required for the specification of the stem-cell-like fate ...
The increase in resistance to contaminants can result in the loss of genetic diversity of impacted populations. In this work, the effects of acid mine drainage (AMD) on the genetic diversity and structure of a historically exposed population of Daphnia longispina were evaluated using amplified fragment length polymorphism (AFLP) analysis. Individual sensitivity to acute copper exposure was dete...
The cosmic infrared background (CIB) sourced by emission from dusty star-forming galaxies is a valuable source of information on the star formation history Universe. In measurements millimeter sky at frequencies higher than $\ensuremath{\sim}300\text{ }\text{ }\mathrm{GHz}$, CIB and thermal Galactic dust dominate. Insufficient understanding contribution lower can hinder efforts to measure kinet...
Comité international de bioéthique (CIB) International Bioethics Committee (IBC) INTRODUCTION 1. The Universal Declaration on the Human Genome and Human Rights, in Article 2 concerning its implementation, underscores the need to identify practices such as germ-line interventions that might be contrary to human dignity and assigns responsibility for this to the International Bioethics Committee ...
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