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
Filter
  • Meteorology and Climatology  (52)
  • Cell Line
  • 2005-2009  (70)
  • 2000-2004
  • 1975-1979
  • 1955-1959
  • 2006  (70)
  • 1
    facet.materialart.
    Unknown
    Single-Particle Measurements of Midlatitude Black Carbon and Light-Scattering Aerosols from the Boundary Layer to the Lower Stratosphere (2006)
    In:  Other Sources
    Details
    Publication Date: 2019-07-19
    Description: A single-particle soot photometer (SP2) was flown on a NASA WB-57F high-altitude research aircraft in November 2004 from Houston, Texas. The SP2 uses laser-induced incandescence to detect individual black carbon (BC) particles in an air sample in the mass range of approx.3-300 fg (approx.0.15-0.7 microns volume equivalent diameter). Scattered light is used to size the remaining non-BC aerosols in the range of approx.0.17-0.7 microns diameter. We present profiles of both aerosol types from the boundary layer to the lower stratosphere from two midlatitude flights. Results for total aerosol amounts in the size range detected by the SP2 are in good agreement with typical particle spectrometer measurements in the same region. All ambient incandescing particles were identified as BC because their incandescence properties matched those of laboratory-generated BC aerosol. Approximately 40% of these BC particles showed evidence of internal mixing (e.g., coating). Throughout profiles between 5 and 18.7 km, BC particles were less than a few percent of total aerosol number, and black carbon aerosol (BCA) mass mixing ratio showed a constant gradient with altitude above 5 km. SP2 data was compared to results from the ECHAM4/MADE and LmDzT-INCA global aerosol models. The comparison will help resolve the important systematic differences in model aerosol processes that determine BCA loadings. Further intercomparisons of models and measurements as presented here will improve the accuracy of the radiative forcing contribution from BCA.
    Keywords: Meteorology and Climatology
    Type: Journal of Geophysical Research Atmospheres (ISSN 0148-0227); 111
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 2
    facet.materialart.
    Unknown
    Differential targeting of Gbetagamma-subunit signaling with small molecules (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-04-22
    Description: G protein betagamma subunits have potential as a target for therapeutic treatment of a number of diseases. We performed virtual docking of a small-molecule library to a site on Gbetagamma subunits that mediates protein interactions. We hypothesized that differential targeting of this surface could allow for selective modulation of Gbetagamma subunit functions. Several compounds bound to Gbetagamma subunits with affinities from 0.1 to 60 muM and selectively modulated functional Gbetagamma-protein-protein interactions in vitro, chemotactic peptide signaling pathways in HL-60 leukocytes, and opioid receptor-dependent analgesia in vivo. These data demonstrate an approach for modulation of G protein-coupled receptor signaling that may represent an important therapeutic strategy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bonacci, Tabetha M -- Mathews, Jennifer L -- Yuan, Chujun -- Lehmann, David M -- Malik, Sundeep -- Wu, Dianqing -- Font, Jose L -- Bidlack, Jean M -- Smrcka, Alan V -- GM60286/GM/NIGMS NIH HHS/ -- HL-T3207949/HL/NHLBI NIH HHS/ -- HL080706/HL/NHLBI NIH HHS/ -- K05-DA00360/DA/NIDA NIH HHS/ -- R01 CA132317/CA/NCI NIH HHS/ -- R01 GM054597/GM/NIGMS NIH HHS/ -- R01 GM054597-09/GM/NIGMS NIH HHS/ -- R01 HL080706/HL/NHLBI NIH HHS/ -- R01 HL080706-10/HL/NHLBI NIH HHS/ -- R01 HL080706-11/HL/NHLBI NIH HHS/ -- T32DA07232/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 2006 Apr 21;312(5772):443-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology and Physiology, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16627746" target="_blank"〉PubMed〈/a〉
    Keywords: Analgesics/pharmacology ; Animals ; Binding Sites ; Binding, Competitive ; Cell Line ; Computer Simulation ; Cyclohexanes/chemistry/*metabolism/*pharmacology ; Drug Evaluation, Preclinical/*methods ; Enzyme-Linked Immunosorbent Assay ; G-Protein-Coupled Receptor Kinase 2 ; GTP-Binding Protein alpha Subunits/metabolism ; GTP-Binding Protein beta Subunits/chemistry/*metabolism ; GTP-Binding Protein gamma Subunits/chemistry/*metabolism ; HL-60 Cells ; Humans ; Isoenzymes/metabolism ; Mice ; Mice, Inbred ICR ; Mitogen-Activated Protein Kinases/metabolism ; Molecular Structure ; Morphine/pharmacology ; N-Formylmethionine Leucyl-Phenylalanine/metabolism ; Peptide Library ; Peptides/*metabolism ; Phosphatidylinositol 3-Kinases/metabolism ; Phospholipase C beta ; Protein Binding ; Protein Interaction Mapping ; *Signal Transduction ; Software ; Structure-Activity Relationship ; Type C Phospholipases/metabolism ; Xanthenes/chemistry/*metabolism/*pharmacology ; beta-Adrenergic Receptor Kinases/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
  • 3
    facet.materialart.
    Unknown
    Netrins promote developmental and therapeutic angiogenesis (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-07-01
    Description: Axonal guidance and vascular patterning share several guidance cues, including proteins in the netrin family. We demonstrate that netrins stimulate proliferation, migration, and tube formation of human endothelial cells in vitro and that this stimulation is independent of known netrin receptors. Suppression of netrin1a messenger RNA in zebrafish inhibits vascular sprouting, implying a proangiogenic role for netrins during vertebrate development. We also show that netrins accelerate neovascularization in an in vivo model of ischemia and that they reverse neuropathy and vasculopathy in a diabetic murine model. We propose that the attractive vascular and neural guidance functions of netrins offer a unique therapeutic potential.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2577078/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2577078/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, Brent D -- Ii, Masaaki -- Park, Kye Won -- Suli, Arminda -- Sorensen, Lise K -- Larrieu-Lahargue, Frederic -- Urness, Lisa D -- Suh, Wonhee -- Asai, Jun -- Kock, Gerhardus A H -- Thorne, Tina -- Silver, Marcy -- Thomas, Kirk R -- Chien, Chi-Bin -- Losordo, Douglas W -- Li, Dean Y -- R01 HL068873/HL/NHLBI NIH HHS/ -- R01 HL077671/HL/NHLBI NIH HHS/ -- R01 HL077671-03/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2006 Aug 4;313(5787):640-4. Epub 2006 Jun 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Human Molecular Biology and Genetics, University of Utah, Salt Lake City, UT 84112, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16809490" target="_blank"〉PubMed〈/a〉
    Keywords: Angiogenesis Inducing Agents ; Animals ; Cell Line ; Cell Movement ; Chemotaxis ; DNA, Complementary ; Diabetic Angiopathies/therapy ; Diabetic Neuropathies/therapy ; Embryo, Nonmammalian ; Endothelial Cells/*physiology ; Endothelium, Vascular/cytology ; Genetic Therapy ; Humans ; Ischemia/drug therapy ; Mice ; Muscle, Skeletal/blood supply ; *Neovascularization, Physiologic ; Nerve Growth Factors/genetics/pharmacology/*physiology ; Neural Conduction ; Receptors, Cell Surface/physiology ; Tumor Suppressor Proteins/genetics/pharmacology/*physiology ; Vascular Endothelial Growth Factor A/therapeutic use ; Zebrafish
    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
  • 4
    facet.materialart.
    Unknown
    EOS Microwave Limb Sounder Observations of 'Frozen-in' Anticyclonic Air in Arctic Summer (2006)
    In:  Other Sources
    Details
    Publication Date: 2018-06-11
    Description: A previously unreported phenomenon, a 'frozen-in' anticyclone (FrIAC) after the 2005 Arctic spring vortex breakup, was discovered in Earth Observing System (EOS) Microwave Limb Sounder (MLS) long-lived trace gas data. A tongue of low-latitude (high-N2O, low-H2O) air was drawn into high latitudes and confined in a tight anticyclone, then advected intact in the summer easterlies through late August. A similar feature in O3 disappeared by early April as a result of chemical processes. The FrIAC was initially advected upright at nearly the same speed at all levels from approx.660 to 1300 K (approx.25-45 km); increasing vertical wind shear after early June tilted the FrIAC and weakened it at higher levels. The associated feature in PV disappeared by early June; transport calculations fail to reproduce the remarkable persistence of the FrIAC, suggesting deficiencies in summer high-latitude winds. The historical PV record suggests that this phenomenon may have occurred several times before. The lack of a persistent signature in O3 or PV, along with its small size and rapid motion, make it unlikely that a FrIAC could have been reliably identified without hemispheric daily longlived trace gas profiles such as those from EOS MLS.
    Keywords: Meteorology and Climatology
    Type: Geophysical Research Letters (ISSN 0094-8276); Volume 33
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 5
    facet.materialart.
    Unknown
    Offshore Radiation Observations for Climate Research at the CERES Ocean Validation Experiment (2006)
    In:  CASI
    Details
    Publication Date: 2018-06-11
    Description: When radiometers on a satellite are pointed towards the planet with the goal of understanding a phenomenon quantitatively, rather than just creating a pleasing image, the task at hand is often problematic. The signal at the detector can be affected by scattering, absorption, and emission; and these can be due to atmospheric constituents (gases, clouds, and aerosols), the earth's surface, and subsurface features. When targeting surface phenomena, the remote sensing algorithm needs to account for the radiation associated with the atmospheric constituents. Likewise, one needs to correct for the radiation leaving the surface, when atmospheric phenomena are of interest. Rigorous validation of such remote sensing products is a real challenge. In visible and near infrared wavelengths, the jumble of effects on atmospheric radiation are best accomplished over dark surfaces with fairly uniform reflective properties (spatial homogeneity) in the satellite instrument's field of view (FOV). The ocean's surface meets this criteria; land surfaces - which are brighter, more spatially inhomogeneous, and more changeable with time - generally do not. NASA's Clouds and the Earth's Radiant Energy System (CERES) project has used this backdrop to establish a radiation monitoring site in Virginia's coastal Atlantic Ocean. The project, called the CERES Ocean Validation Experiment (COVE), is located on a rigid ocean platform allowing the accurate measurement of radiation parameters that require precise leveling and pointing unavailable from ships or buoys. The COVE site is an optimal location for verifying radiative transfer models and remote sensing algorithms used in climate research; because of the platform's small size, there are no island wake effects; and suites of sensors can be simultaneously trained both on the sky and directly on ocean itself. This paper describes the site, the types of measurements made, multiple years of atmospheric and ocean surface radiation observations, and satellite validation results.
    Keywords: Meteorology and Climatology
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 6
    facet.materialart.
    Unknown
    Tropospheric and stratospheric ozone from assimilation of Aura data (2006)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: Ozone is an atmospheric trace gas with multiple impacts on the environment. Global ozone fields are needed for air quality predictions, estimation of the ultraviolet radiation reaching the surface, climate-radiation studies, and may also have an impact on longer-term weather predictions. We estimate global ozone fields in the stratosphere and troposphere by combining the data from EOS Aura satellite with an ozone model using data assimilation. Ozone exhibits a large temporal variability in the lower stratosphere. Our previous work showed that assimilation of satellite data from limb-sounding geometry helps constrain ozone profiles in that region. We assimilated ozone data from the Aura Microwave Limb Sounder (MLS) and the Ozone Monitoring Instrument (OMI) into the ozone system at NASA's Global Modeling and Assimilation Office (GMAO). Ozone is transported within a general circulation model (GCM) which includes parameterizations for stratospheric photochemistry, tropospheric chemistry, and a simple scheme for heterogeneous ozone loss. The focus of this study is on the representation of ozone in the lower stratosphere and tropospheric ozone columns. We plan to extend studies of tropospheric ozone distribution through assimilation of ozone data from the Tropospheric Emission Spectrometer (TES). Comparisons with ozone sondes and occultation data show that assimilation of Aura data reproduces ozone gradients and variability in the lower stratosphere well. We proceed by separating the contributions to temporal changes in the ozone field into those that are due to the model and those that are due to the assimilation of Aura data. The impacts of Aura data are illustrated and their role in the representation of ozone variability in the lower stratosphere and troposphere is shown.
    Keywords: Meteorology and Climatology
    Type: American Geophysical Union Spring Meeting: Variability of Gaseous Composition of the Troposphere; May 23, 2006 - May 25, 2006; Baltimore, MD; United States
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 7
    facet.materialart.
    Unknown
    NASA-Langley Web-Based Operational Real-time Cloud Retrieval Products from Geostationary Satellites (2006)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: At NASA Langley Research Center (LaRC), radiances from multiple satellites are analyzed in near real-time to produce cloud products over many regions on the globe. These data are valuable for many applications such as diagnosing aircraft icing conditions and model validation and assimilation. This paper presents an overview of the multiple products available, summarizes the content of the online database, and details web-based satellite browsers and tools to access satellite imagery and products.
    Keywords: Meteorology and Climatology
    Type: SPIE-6408-72 , SPIE 5th International Symposium on Asia-Pacific Remote Sensing Conference 2006; Nov 13, 2006 - Nov 17, 2006; Goa; India
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 8
    facet.materialart.
    Unknown
    The Origin of Systematic Errors in the GCM Simulation of ITCZ Precipitation (2006)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: Previous GCM studies have found that the systematic errors in the GCM simulation of the seasonal mean ITCZ intensity and location could be substantially corrected by adding suitable amount of rain re-evaporation or cumulus momentum transport. However, the reason(s) for these systematic errors and solutions has remained a puzzle. In this work the knowledge gained from previous studies of the ITCZ in an aqua-planet model with zonally uniform SST is applied to solve this puzzle. The solution is supported by further aqua-planet and full model experiments using the latest version of the Goddard Earth Observing System GCM.
    Keywords: Meteorology and Climatology
    Type: 27th AMS Conference on Hurricanes and Tropical Meteorology; Apr 24, 2006 - Apr 28, 2006; Monterey, CA; United States
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 9
    facet.materialart.
    Unknown
    CO Signatures in Subtropical Convective Clouds and Anvils During CRYSTAL-FACE: An Analysis of Convective Transport and Entertainment Using Observations and a Cloud-Resolving Model (2006)
    In:  Other Sources
    Details
    Publication Date: 2019-07-19
    Description: Convective systems are an important mechanism in the transport of boundary layer air into the upper troposphere. The Cirrus Regional Study of Tropical Anvils and Cirrus Layers-Florida Area Cirrus Experiment (CRYSTAL-FACE) campaign, in July 2002, was developed as a comprehensive atmospheric mission to improve knowledge of subtropical cirrus systems and their roles in regional and global climate. In situ measurements of carbon monoxide (CO), water vapor (H20v), and total water (H20t) aboard NASA's . WB-57F aircraft and CO aboard the U.S. Navy's Twin Otter aircraft were obtained to study the role of convective transport. Three flights sampled convective outflow on 11, 16 and 29 July found varying degrees of CO enhancement relative to the fiee troposphere. A cloud-resolving model used the in situ observations and meteorological fields to study these three systems. Several methods of filtering the observations were devised here using ice water content, relative humidity with respect to ice, and particle number concentration as a means to statistically sample the model results to represent the flight tracks. A weighted histogram based on ice water content observations was then used to sample the simulations for the three flights. In addition, because the observations occurred in the convective outflow cirrus and not in the storm cores, the model was used to estimate the maximum CO within the convective systems. In general, anvil-level air parcels contained an estimated 20-40% boundary layer air in the analyzed storms.
    Keywords: Meteorology and Climatology
    Type: Journal of Geophysical Research - Atmospheres (ISSN 0148-0227); 111
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 10
    facet.materialart.
    Unknown
    Oligonucleotide-modified gold nanoparticles for intracellular gene regulation (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-05-20
    Description: We describe the use of gold nanoparticle-oligonucleotide complexes as intracellular gene regulation agents for the control of protein expression in cells. These oligonucleotide-modified nanoparticles have affinity constants for complementary nucleic acids that are higher than their unmodified oligonucleotide counterparts, are less susceptible to degradation by nuclease activity, exhibit greater than 99% cellular uptake, can introduce oligonucleotides at a higher effective concentration than conventional transfection agents, and are nontoxic to the cells under the conditions studied. By chemically tailoring the density of DNA bound to the surface of gold nanoparticles, we demonstrated a tunable gene knockdown.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rosi, Nathaniel L -- Giljohann, David A -- Thaxton, C Shad -- Lytton-Jean, Abigail K R -- Han, Min Su -- Mirkin, Chad A -- New York, N.Y. -- Science. 2006 May 19;312(5776):1027-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113 USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16709779" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Deoxyribonucleases/metabolism ; *Gene Expression Regulation ; Glutathione/metabolism ; *Gold ; Green Fluorescent Proteins/genetics ; HeLa Cells ; Humans ; Mice ; *Nanostructures ; *Oligodeoxyribonucleotides, Antisense/metabolism ; RNA, Messenger
    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...