Kooperativer Bibliotheksverbund

Berlin Brandenburg

and
and

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
Filter
Language
Year
  • 1
    Language: English
    In: Journal of Quantitative Spectroscopy and Radiative Transfer, December 2014, Vol.149, pp.347-359
    Description: Radiance measurements of solar radiation that is backscattered by the Earth׳s atmosphere or surface contain information about the atmospheric composition and the state of the Earth׳s surface. Retrieving such information from satellite-based observations in nadir geometry employs a radiative transfer forward model. The forward model simulates the observed quantity, aiming to reproduce the observation. LINTRAN v2.0 is a linearised vector radiative transfer forward model, employing forward-adjoint theory, that is capable of modelling cloud contaminated satellite observations and their derivatives with respect to the state of the atmosphere and the Earth׳s surface in a numerically efficient manner. A significant gain in efficiency with respect to its predecessor (LINTRAN v1.0) is achieved through a mathematical framework that combines an approximate iterative solving method using the forward-adjoint perturbation theory with separation of the first orders of scattering from the diffuse intensity vector field. Contributions to the observable up to order of scattering are recursively solved in an analytical manner. Contributions from higher orders of scattering are subsequently solved in a numerical manner, assuming that the intensity field varies linearly with the vertical coordinate within an optically homogeneous model layer. This method is implemented in LINTRAN v2.0, choosing =2, within the general framework of forward-adjoint perturbation theory. This new approach allows us to decrease the number of model layers and the degree of angular quadrature within the numerical solver by a factor of 10 and 1.4 respectively, compared to the previous model version, assuming a homogeneous atmosphere loaded with scattering Mie particles (size parameter ). In this homogeneous atmosphere, the reduced discretisation sampling in turn reduces the numerical effort associated with the numerical matrix solver by a factor of 42 relative to the previous model version, without a loss in model accuracy.
    Keywords: Radiative Transfer Model ; Forward-Adjoint Theory ; Clouds ; Satellite Measurements ; Trace Gas Retrievals ; Physics
    ISSN: 0022-4073
    E-ISSN: 1879-1352
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Language: English
    In: Heart, April, 2006, Vol.92(4), p.527(2)
    Keywords: Coronary Heart Disease -- Research ; Angiotensin Converting Enzyme -- Genetic Aspects ; Genetic Polymorphisms -- Research ; Exercise Tests -- Physiological Aspects
    ISSN: 1355-6037
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Language: English
    In: Clinical Rehabilitation, November 2010, Vol.24(11), pp.988-999
    Description: Objective: To investigate the effect of oral creatine supplementation in conjunction with an exercise programme on physical fitness in patients with coronary artery disease or chronic heart failure. Design: Single centre double-blind randomized placebo controlled trial. Setting: Cardiac rehabilitation centre. Subjects and intervention: 70 (4 women) cardiac patients (age 57.5 (8.4) years) were randomized to a placebo (n = 37) or creatine (n = 33) treatment for three months. Combined aerobic endurance and resistance training (three sessions/ week) was performed during supplementation. Main Measures: Aerobic power was determined during graded bicycle testing, knee extensor peak isometric and isokinetic strength, endurance and recovery were assessed by an isokinetic dynamometer, and health related quality of life was evaluated with the SF-36 and MacNew Heart Disease questionnaires. In addition, blood samples were taken after an overnight fast and 24 hour urinary collection was performed. Results: At baseline there were no significant differences between both groups. We observed main time effects for aerobic power, muscle performance, health related quality of life, high density lipoprotein cholesterol and triglycerides (pre vs post; P〈0.05 for all). However, changes after training were similar between placebo group and creatine group (P〉0.05). Further, no detrimental effect on renal or liver function was observed nor were there any reports of side effects. Conclusion: Oral creatine supplementation in combination with exercise training does not exert any additional effect on the improvement in physical performance, health related quality of life, lipid profile in patients with coronary artery disease or chronic heart failure than exercise training alone.
    Keywords: Occupational Therapy & Rehabilitation ; Physical Therapy
    ISSN: 0269-2155
    E-ISSN: 1477-0873
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    In: Journal of Geophysical Research: Atmospheres, 27 May 2012, Vol.117(D10), pp.n/a-n/a
    Description: We compare two conceptually different methods for determining methane column‐averaged mixing ratios from Greenhouse Gases Observing Satellite (GOSAT) shortwave infrared (SWIR) measurements. These methods account differently for light scattering by aerosol and cirrus. The proxy method retrieves a CO column which, in conjunction with prior knowledge on COacts as a proxy for scattering effects. The physics‐based method accounts for scattering by retrieving three effective parameters of a scattering layer. Both retrievals are validated on a 19‐month data set using ground‐based at 12 stations of the Total Carbon Column Observing Network (TCCON), showing comparable performance: for the proxy retrieval we find station‐dependent retrieval biases from −0.312% to 0.421% of a standard deviation of 0.22% and a typical precision of 17 ppb. The physics method shows biases between −0.836% and −0.081% with a standard deviation of 0.24% and a precision similar to the proxy method. Complementing this validation we compared both retrievals with simulated methane fields from a global chemistry‐transport model. This identified shortcomings of both retrievals causing biases of up to 1ings and provide a satisfying validation of any methane retrieval from space‐borne SWIR measurements, in our opinion it is essential to further expand the network of TCCON stations. Shortcomings of current methane retrieval algorithms are identified For a satisfying algorithm validation the TCCON should be expanded
    Keywords: Gosat ; Methane ; Retrieval
    ISSN: 0148-0227
    E-ISSN: 2156-2202
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Dissertation
    Dissertation
    Amsterdam: Vrije Universiteit
    Language: English
    Keywords: Remote Sensing ; GOSAT ; methane ; atmosphere ; clouds ; short-wavelength infrared ; retrieval
    Source: VU University Amsterdam
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    In: Nature Genetics, 2012, Vol.44, pp.1249-1254
    Description: Elevated transforming growth factor (TGF)-beta signaling has been implicated in the pathogenesis of syndromic presentations of aortic aneurysm, including Marfan syndrome (MFS) and Loeys-Dietz syndrome (LDS). However, the location and character of many of the causal mutations in LDS intuitively imply...
    ISSN: 1061-4036
    Source: NARCIS (National Academic Research and Collaborations Information System)
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    In: Nature Genetics, 2012, Vol.44, pp.922-927
    Description: Loeys-Dietz syndrome (LDS) associates with a tissue signature for high transforming growth factor (TGF)-beta signaling but is often caused by heterozygous mutations in genes encoding positive effectors of TGF-beta signaling, including either subunit of the TGF-beta receptor or SMAD3, thereby engendering...
    ISSN: 1061-4036
    Source: NARCIS (National Academic Research and Collaborations Information System)
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    In: Geophysical Research Letters, July 2011, Vol.38(14), pp.n/a-n/a
    Description: The column‐average dry air mole fractions of atmospheric carbon dioxide and methane and are inferred from observations of backscattered sunlight conducted by the Greenhouse gases Observing SATellite (GOSAT). Comparing the first year of GOSAT retrievals over land with colocated ground‐based observations of the Total Carbon Column Observing Network (TCCON), we find an average difference (bias) of −0.05% and −0.30% for and with a station‐to‐station variability (standard deviation of the bias) of 0.37% and 0.26% among the 6 considered TCCON sites. The root‐mean square deviation of the bias‐corrected satellite retrievals from colocated TCCON observations amounts to 2.8 ppm for and 0.015 ppm for Without any data averaging, the GOSAT records reproduce general source/sink patterns such as the seasonal cycle of suggesting the use of the satellite retrievals for constraining surface fluxes. Improved quality of XCO2 and XCH4 satellite retrievals due to refined methods Source/sink patterns are dentifiable in the data record without averaging Constrained surface flux modeling is the logical next step
    Keywords: Gosat ; Carbon Dioxide ; Methane ; Satellite Remote Sensing
    ISSN: 0094-8276
    E-ISSN: 1944-8007
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    In: American Journal of Human Genetics, 2016, Vol.99, pp.174-187
    Description: Autosomal-dominant tubulo-interstitial kidney disease (ADTKD) encompasses a group of disorders characterized by renal tubular and interstitial abnormalities, leading to slow progressive loss of kidney function requiring dialysis and kidney transplantation. Mutations in UMOD, MUC1, and REN are responsible...
    ISSN: 0002-9297
    Source: NARCIS (National Academic Research and Collaborations Information System)
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    Language: English
    In: International Journal of Cardiology, 2015, Vol.179, pp.203-210
    Description: Background Exercise-based cardiac rehabilitation increases peak oxygen uptake (peak VO2), which is an important predictor of mortality in cardiac patients. However, it remains unclear which exercise characteristics are most effective for improving peak VO2 in coronary artery disease (CAD) patients. Proof...
    ISSN: 0167-5273
    Source: NARCIS (National Academic Research and Collaborations Information System)
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. Further information can be found on the KOBV privacy pages