ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    facet.materialart.
    Unknown
    First galaxy-galaxy lensing measurement of satellite halo mass in the CFHT Stripe-82 Survey (2014)
    Oxford University Press
    Details
    Publication Date: 2014-02-20
    Description: We select satellite galaxies from the galaxy group catalogue constructed with the Sloan Digital Sky Survey spectroscopic galaxies and measure the tangential shear around these galaxies with the source catalogue extracted from the Canada–France–Hawaii Telescope Stripe-82 Survey. Using the tangential shear, we constrain the mass of subhaloes associated with these satellites. The lensing signal is measured around satellites in groups with masses in the range 10 13 –5 x 10 14 h –1 M , and is found to agree well with theoretical expectations. Fitting the data with a truncated NFW profile, we obtain an average subhalo mass of log ( M sub / h –1 M ) = 11.68 ± 0.67 for satellites whose projected distances to central galaxies are in the range 0.1–0.3 h –1 and log ( M sub / h –1 M ) = 11.68 ± 0.76 for satellites with projected halo-centric distance in [0.3, 0.5] h –1 Mpc. The best-fitting subhalo masses are comparable to the truncated subhalo masses assigned to satellite galaxies using abundance matching and are about 5–10 times higher than the average stellar mass of the lensing satellite galaxies.
    Print ISSN: 0035-8711
    Electronic ISSN: 1365-2966
    Topics: Physics
    Published by Oxford University Press
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 2
    facet.materialart.
    Unknown
    Testing galaxy formation models with galaxy stellar mass functions (2016)
    Oxford University Press
    Details
    Publication Date: 2016-11-13
    Description: We compare predictions of a number of empirical models and numerical simulations of galaxy formation to the conditional stellar mass functions of galaxies in groups of different masses obtained recently by Lan et al. to test how well different models accommodate the data. The observational data clearly prefer a model in which star formation in low-mass haloes changes behaviour at a characteristic redshift z c  ~ 2. There is also tentative evidence that this characteristic redshift depends on environment, becoming z c  ~ 4 in regions that eventually evolve into rich clusters of galaxies. The constrained model is used to understand how galaxies form and evolve in dark matter haloes, and to make predictions for other statistical properties of the galaxy population, such as the stellar mass functions of galaxies at high z , the star formation, and stellar mass assembly histories in dark matter haloes. A comparison of our model predictions with those of other empirical models shows that different models can make vastly different predictions, even though all of them are tuned to match the observed stellar mass functions of galaxies.
    Print ISSN: 0035-8711
    Electronic ISSN: 1365-2966
    Topics: Physics
    Published by Oxford University Press
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 3
    facet.materialart.
    Unknown
    An observational proxy of halo assembly time and its correlation with galaxy properties (2015)
    Oxford University Press
    Details
    Publication Date: 2015-11-06
    Description: We show that the ratio between the stellar mass of central galaxy and the mass of its host halo, f c M *,c / M h , can be used as an observable proxy of halo assembly time, in that galaxy groups with higher f c assembled their masses earlier. Using SDSS groups of Yang et al., we study how f c correlates with galaxy properties such as colour, star formation rate, metallicity, bulge-to-disc ratio, and size. Central galaxies of a given stellar mass in groups with f c 〉 0.02 tend to be redder in colour, more quenched in star formation, smaller in size, and more bulge dominated, as f c increases. The trends in colour and star formation appear to reverse at f c 〈 0.02, reflecting a downsizing effect that galaxies in massive haloes formed their stars earlier although the host haloes themselves assembled later (lower f c ). No such reversal is seen in the size of elliptical galaxies, suggesting that their assembly follows halo growth more closely than their star formation. Satellite galaxies of a given stellar mass in groups of a given halo mass tend to be redder in colour, more quenched in star formation and smaller in size as f c increases. For a given stellar mass, satellites also tend to be smaller than centrals. The trends are stronger for lower mass groups. For groups more massive than ~10 13 M , a weak reversed trend is seen in colour and star formation. The observed trends in star formation are qualitatively reproduced by an empirical model based on halo age abundance matching, but not by a semi-analytical model tested here.
    Print ISSN: 0035-8711
    Electronic ISSN: 1365-2966
    Topics: Physics
    Published by Oxford University Press
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 4
    facet.materialart.
    Unknown
    Asymmetric Colloidal Janus Particle Formation Is Core-Size-Dependent (2015)
    American Chemical Society (ACS)
    In: Langmuir
    Details
    Publication Date: 2015-08-14
    Description: Langmuir DOI: 10.1021/acs.langmuir.5b01499
    Print ISSN: 0743-7463
    Electronic ISSN: 1520-5827
    Topics: Chemistry and Pharmacology
    Published by American Chemical Society (ACS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 5
    facet.materialart.
    Unknown
    Novel Genes Affecting Blood Pressure Detected Via Gene-Based Association Analysis (2015)
    Genetics Society of America (GSA)
    Details
    Publication Date: 2015-06-12
    Description: Hypertension is a common disorder and one of the most important risk factors for cardiovascular diseases. The aim of this study was to identify more novel genes for blood pressure. Based on the publically available SNP-based P values of a meta-analysis of genome-wide association studies, we performed an initial gene-based association study in a total of 69,395 individuals. To find supplementary evidence to support the importance of the identified genes, we performed GRAIL (gene relationships among implicated loci) analysis, protein–protein interaction analysis, functional annotation clustering analysis, coronary artery disease association analysis, and other bioinformatics analyses. Approximately 22,129 genes on the human genome were analyzed for blood pressure in gene-based association analysis. A total of 43 genes were statistically significant after Bonferroni correction ( P 〈 2.3 x 10 –6 ). The evidence obtained from the analyses of this study suggested the importance of ID1 ( P = 2.0 x 10 –6 ), CYP17A1 ( P = 4.58 x 10 –9 ), ATXN2 ( P = 1.07 x 10 –13 ), CLCN6 ( P = 4.79 x 10 –9 ), FURIN ( P = 1.38 x 10 –6 ), HECTD4 ( P = 3.95 x 10 –11 ), NPPA ( P = 1.60 x 10 –6 ), and PTPN11 ( P = 8.89 x 10 –10 ) in the genetic basis of blood pressure. The present study found some important genes associated with blood pressure, which might provide insights into the genetic architecture of hypertension.
    Electronic ISSN: 2160-1836
    Topics: Biology
    Published by Genetics Society of America (GSA)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 6
    facet.materialart.
    Unknown
    Impact factor for the ionospheric total electron content response to solar flare irradiation (2011)
    Wiley
    Details
    Publication Date: 2011-04-15
    Description: On the basis of ionospheric total electron content (TEC) enhancement over the subsolar region during flares, and combined with data of the peak X-ray flux in the 0.1–0.8 nm region, EUV increase in the 0.1–50 and 26–34 nm regions observed by the SOHO Solar EUV Monitor EUV detector, also with the flare location on the solar disc, the relationship among these parameters is analyzed statistically. Results show that the correlation between ionospheric TEC enhancement and the soft X-ray peak flux in the 0.1–0.8 nm region is poor, and the flare location on the solar disc is one noticeable factor for the impact strength of the ionospheric TEC during solar flares. Statistics indicate clearly that, at the same X-ray class, the flares near the solar disc center have much larger effects on the ionospheric TEC than those near the solar limb region. For the EUV band, although TEC enhancements and EUV flux increases in both the 0.1–50 and 26–34 nm regions have a positive relation, the flux increase in the 26–34 nm region during flares is more correlative with TEC enhancements. Considering the possible connection between the flare location on the solar disc and the solar atmospheric absorption to the EUV irradiation, an Earth zenith angle is introduced, and an empirical formula describing the relationship of TEC enhancement and traditional flare parameters, including flare X-ray peak and flare location information, is given. In addition, the X-ray class of the flare occurring on 4 November 2003, which led the saturation of the X-ray detector on GOES 12, is estimated using this empirical formula, and the estimated class is X44.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 7
    facet.materialart.
    Unknown
    Phosphate signaling regulated by SPX1 and SPX2 proteins [Plant Biology] (2014)
    National Academy of Sciences
    Details
    Publication Date: 2014-10-15
    Description: In plants, sensing the levels of external and internal nutrients is essential for reprogramming the transcriptome and adapting to the fluctuating environment. Phosphate (Pi) is a key plant nutrient, and a large proportion of Pi starvation-responsive genes are under the control of PHOSPHATE STARVATION RESPONSE REGULATOR 1 (PHR1) in Arabidopsis...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 8
    facet.materialart.
    Unknown
    Energetically Biased DNA Motor Containing a Thermodynamically Stable Partial Strand Displacement State (2014)
    American Chemical Society (ACS)
    In: Langmuir
    Details
    Publication Date: 2014-11-13
    Description: Langmuir DOI: 10.1021/la503711g
    Print ISSN: 0743-7463
    Electronic ISSN: 1520-5827
    Topics: Chemistry and Pharmacology
    Published by American Chemical Society (ACS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 9
    facet.materialart.
    Unknown
    Assembly of an evolutionarily new pathway for alpha-pyrone biosynthesis in Arabidopsis (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-08-28
    Description: Plants possess arrays of functionally diverse specialized metabolites, many of which are distributed taxonomically. Here, we describe the evolution of a class of substituted alpha-pyrone metabolites in Arabidopsis, which we have named arabidopyrones. The biosynthesis of arabidopyrones requires a cytochrome P450 enzyme (CYP84A4) to generate the catechol-substituted substrate for an extradiol ring-cleavage dioxygenase (AtLigB). Unlike other ring-cleavage-derived plant metabolites made from tyrosine, arabidopyrones are instead derived from phenylalanine through the early steps of phenylpropanoid metabolism. Whereas CYP84A4, an Arabidopsis-specific paralog of the lignin-biosynthetic enzyme CYP84A1, has neofunctionalized relative to its ancestor, AtLigB homologs are widespread among land plants and many bacteria. This study exemplifies the rapid evolution of a biochemical pathway formed by the addition of a new biological activity into an existing metabolic infrastructure.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weng, Jing-Ke -- Li, Yi -- Mo, Huaping -- Chapple, Clint -- New York, N.Y. -- Science. 2012 Aug 24;337(6097):960-4. doi: 10.1126/science.1221614.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Purdue University, West Lafayette, IN 47907, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22923580" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Arabidopsis/enzymology/genetics/*metabolism ; Arabidopsis Proteins/chemistry/genetics/*metabolism ; Base Sequence ; Biosynthetic Pathways ; Catalytic Domain ; Cytochrome P-450 Enzyme System/chemistry/genetics/*metabolism ; Dioxygenases/genetics/metabolism ; Evolution, Molecular ; Gene Duplication ; Genome, Plant ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Phenylalanine/metabolism ; Phylogeny ; Plant Stems/metabolism ; Plants, Genetically Modified ; Pyrones/chemistry/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 10
    facet.materialart.
    Unknown
    Genotypic and phenotypic characterization of HIV-1 patients with primary infection (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-08-27
    Description: Better characterization of human immunodeficiency virus-type 1 (HIV-1) in patients with primary infection has important implications for the development of an acquired immunodeficiency syndrome (AIDS) vaccine because vaccine strategies should target viral isolates with the properties of transmitted viruses. In five HIV-1 seroconverters, the viral phenotype was found to be uniformly macrophage-tropic and non-syncytium-inducing. Furthermore, the viruses were genotypically homogeneous within each patient, but a common signature sequence was not discernible among transmitted viruses. In the two cases where the sexual partners were also studied, the sequences of the transmitted viruses matched best with minor variants in the blood of the transmitters. There was also a stronger pressure to conserve sequences in gp120 than in gp41, nef, and p17, suggesting that a selective mechanism is involved in transmission.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhu, T -- Mo, H -- Wang, N -- Nam, D S -- Cao, Y -- Koup, R A -- Ho, D D -- AI24030/AI/NIAID NIH HHS/ -- AI25541/AI/NIAID NIH HHS/ -- AI27742/AI/NIAID NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1993 Aug 27;261(5125):1179-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Aaron Diamond AIDS Research Center, New York University School of Medicine, NY 10016.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8356453" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Cell Line ; Female ; Gene Products, gag/chemistry/genetics ; Genes, Viral ; Genotype ; Giant Cells/physiology ; HIV Antigens/chemistry/genetics ; HIV Envelope Protein gp120/chemistry/*genetics ; HIV Envelope Protein gp41/chemistry/genetics ; HIV Infections/*microbiology/transmission ; HIV Seropositivity/microbiology ; HIV-1/chemistry/*genetics/*physiology ; Humans ; Macrophages ; Male ; Molecular Sequence Data ; Phenotype ; Sequence Alignment ; Sexual Partners ; *Viral Proteins ; Virus Replication ; gag Gene Products, Human Immunodeficiency Virus
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...