نتایج جستجو برای: 50h

تعداد نتایج: 74  

1994
L. Nicolaci da Costa Michael S. Vogeley Margaret J. Geller John P. Huchra Changbom Park

We compute the power spectrum of galaxy density uctuations in a recently completed redshift survey of optically-selected galaxies in the southern hemisphere (SSRS2). The amplitude and shape of the SSRS2 power spectrum are consistent with results of the Center for Astrophysics redshift survey of the northern hemisphere (CfA2), including the abrupt change of slope on a scale of 30 50h 1Mpc; these...

Journal: :Mechanisms of Development 2002
Anne Vatland Krøvel Lisbeth Charlotte Olsen

In zebrafish, maternally produced vasa (vas) transcripts become targeted to the cleavage planes of early embryos and subsequently incorporated into the primordial germ cells (PGCs). Zygotic vas transcription occurs from the onset of gastrulation. Here, we report on the characterisation of the zebrafish vas locus. The gene consists of 27 exons, spans about 25kb, and contains two CpG-rich regions...

2008
Marc Davis

This morning’s debate is focused on the question of the large-scale homogeneity of the Universe. I shall present the affirmative position, that there is overwhelming evidence for large scale homogeneity on scales in excess of approximately 50h Mpc, with a fractal distribution of matter on smaller scales. My worthy opponent, Dr. Luciano Pietronero, will present the counter-argument, that the fra...

1997
XUE-BING WU

The relations among the relative changes of surface density, temperature, disk height, and vertically integrated pressure in three kinds of thermally unstable accretion disks are quantitatively investigated, assuming local perturbations. The surface density change is found to be very small in the long perturbation wavelength case but cannot be ignored in the short-wavelength case. It becomes si...

Journal: :The Biochemical journal 1976
S J Higgins J M Burchell W I Mainwaring

Tissue wet weight, nucleic acid content and epithelial and stromal cell numbers were measured in the seminal vesicles of sexually mature male rats. After castration, tissue weight and RNA decreased rapidly and in aprallel to reach, after 14 days, values only 15-20% of those in control (not castrated) animals. During this period, DNA decreased to a much lesser extent (by about 40%), but this cha...

Journal: :International journal of pharmaceutics 2000
S Prior C Gamazo J M Irache H P Merkle B Gander

In view of treating intracellular Brucella infections, microspheres made of poly(lactide) (PLA) and poly(lactide-co-glycolide) (PLGA) were developed as delivery system for the cationic and highly hydrophilic antibiotic gentamicin sulphate. Drug microencapsulation by spray drying yielded microspheres with regular morphology, an average particle size of approximately 3 micrometer and encapsulatio...

2000
Masahiro Takada

We present quantitative investigations of the weak lensing effect on the two-point correlation functions of local maxima (hotspots), ξpk−pk(θ), in the cosmic microwave background (CMB) maps. The lensing effect depends on the projected mass fluctuations between today and the redshift zrec ≈ 1100. If adopting the Gaussian assumption for the primordial temperature fluctuations field, the peak stat...

1997
Philippe Fischer

Galaxy cluster mass distribution are potentially useful probes of Ω0 and the nature of the dark matter. Large clusters will distort the observed shapes of background galaxies through gravitational lensing allowing the measurement of the cluster mass distributions. In this paper we describe weak statistical lensing measurements of the most luminous X-ray cluster known, RXJ1347.5-1145 at z = 0.45...

2017
Babak Haghshenas Yousef Nami Ali Almasi Norhafizah Abdullah Dayang Radiah Rozita Rosli Abolfazl Barzegari Ahmad Yari Khosroushahi

Background and Objectives Probiotics are live microorganisms, which show beneficial health effects on hosts once consumed in sufficient amounts. LAB group can be isolated and characterized from traditional dairy sources. This study aimed at isolating, identifying, and in vitro characterizing (low pH/high bile salt tolerance, antibacterial activity, and antibiotic susceptibility) LAB strains fro...

2002
Mirt Gramann

We investigate the rms peculiar velocity of galaxy clusters in the Lambda cold dark matter (ΛCDM) and tau cold dark matter (τCDM) cosmological models using N-body simulations. Cluster velocities for different cluster masses and radii are examined. To identify clusters in the simulations we use two methods: the standard friends-offriends (FOF) method and the method, where the clusters are define...

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