نتایج جستجو برای: sfr
تعداد نتایج: 2025 فیلتر نتایج به سال:
INTRODUCTION With the advent of assisted reproductive treatment options, the incidence of multiple pregnancies has increased. Although the need for elective single embryo transfer is emphasized time and again, its uniform applicability in practice is yet a distant goal. In view of the fact that triplet and higher order pregnancies are associated with significant fetomaternal complications, the ...
OBJECTIVE To investigate the effect of renal function on the stone-free rate (SFR) of proximal ureteric stones (PUS) after extracorporeal shock wave lithotripsy (ESWL), as urinary obstruction caused by PUS can impair renal function, and elevated serum creatinine levels are associated with decreased ureteric stone passage. PATIENTS AND METHODS From January 2005 to December 2007, 1534 patients ...
Aims. We study the relationship between the local environment of galaxies and their star formation rate (SFR) in the Great Observatories Origins Deep Survey, GOODS, at z ∼1. Methods. We use ultradeep imaging at 24 μm with the MIPS camera onboard Spitzer to determine the contribution of obscured light to the SFR of galaxies over the redshift range 0.8≤ z ≤1.2. Accurate galaxy densities are measu...
We present a formalism to infer the presence of merging activity by comparing the observed time derivative of the galaxy stellar mass function (MF) to the change of the MF expected from the star formation rate (SFR) in galaxies as a function of galaxy mass and time. We present the SFR in the Fors Deep Field as a function of stellar mass and time spanning 9 < logM∗ < 12 and 0 < z < 5. We show th...
Multichannel sound field reproduction techniques, such as Wave Field Synthesis (WFS) and Sound Field Reconstruction (SFR), define loudspeaker filters in the frequency domain. However, in order to use these techniques in practical systems, one needs to convert these frequency-domain characteristics to practical and efficient time-domain digital filters. Additional limitation of SFR comes from th...
Using galaxy samples drawn from the Sloan Digital Sky Survey and the DEEP2 Galaxy Redshift Survey, we study the relationship between star formation and environment at z ∼ 0.1 and z ∼ 1. We estimate the total star–formation rate (SFR) and specific star–formation rate (sSFR) for each galaxy according to the measured [O II] λ3727Å nebular line luminosity, corrected using empirical calibrations to ...
Observations indicate that young massive star clusters in spiral and dwarf galaxies follow a relation between luminosity of the brightest young cluster and the star-formation rate (SFR) of the host galaxy, in the sense that higher SFRs lead to the formation of brighter clusters. Assuming that the empirical relation between maximum cluster luminosity and SFR reflects an underlying similar relati...
We have constructed an extended halo model (EHM) which relates the total stellar mass and star-formation rate (SFR) to halo mass (Mh). An empirical relation between the distribution functions of total stellar mass of galaxies and host halo mass, tuned to match the spatial density of galaxies over 0 < z < 2 and the clustering properties at z ∼ 0, is extended to include two different scenarios de...
To accurately determine sample optical properties using single fiber reflectance spectroscopy (SFR), an absolute calibration of the reflectance is required. We investigated two SFR calibration methods, using a calibrated mirror and using the Fresnel reflection at the fiber tip as a reference. We compared these to commonly used calibration methods, using either Intralipid-20% in combination with...
In this study, we investigate the relationship between the star formation rate (SFR) and AGN luminosity (LAGN) for ∼2000 X-ray detected AGN. The AGN span over three orders of magnitude in X-ray luminosity (1042 <L2−8 keV < 1045.5 erg s−1) and are in the redshift range z = 0.2–2.5. Using infrared (IR) photometry (8–500 μm), including deblended Spitzer and Herschel images and taking into account ...
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