2,811 research outputs found
In-country Research and Data Collection on Forced Labor and Child Labor in the Production of Goods: Nepal
ILAB_In_country_research_and_data_collection_on_FL_and_CL_India.pdf: 27 downloads, before Oct. 1, 2020
Tanzania HIV/AIDS and Malaria Indicator Survey 2011-12(Preliminary Results)
Preliminary results (tables only) for the malaria indicators and selected HIV indicators. The results were released by the National Bureau of Statistics on 11 October 2012. Full results of the survey are still being compiled and will be included in the final report
Caltrans Eureka-Arcata Corridor: Sea Level Rise Vulnerabilities and Adaptation Solutions
Caltrans is proposing to improve unsafe portions of the Highway 101 Eureka-Arcata Corridor (the Corridor). This includes the Indianola Road / Highway 101 Intersection, Jacoby Creek Bridge, and four tide gates. In this report, the vulnerability of the proposed Caltrans projects to SLR and other coastal hazards is analyzed. The analysis enables identification of a range of adaptation options for the proposed projects
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Production Potential of Unrecovered Mobile Oil Through Infield Development: Integrated Geologic and Engineering Studies Overview
This report is part of a coordinated series of research efforts designed to prepare
preliminary evaluations of important components of the domestic unrecovered oil resource. The
specific resource of interest is the oil that is displacable by water and remains in the Nation's
reservoirs after conventional production. Integrated geologic, engineering, and economic
evaluations in this series estimate future reserve additions from this unrecovered mobile oil (UMO)
resource under various circumstances. The individual studies (Volumes 2 through 5) consider the
effects of changes in oil prices and advances in production technology on the economic recovery
potential of the UMO resource. This report (Volume 1) discusses and compares the approaches
and results of the individual studies. Several recovery technologies are evaluated, including the use
of waterflooding in conjunction with infill drilling to displace and produce UMO at decreased well
spacings.
The overall analysis series was conducted in two separate, but coordinated, parts: at a
detailed reservoir level and at a generalized regional level. At the reservoir level, detailed analyses
of three individual Texas reservoirs fully delineated the resource and the potential for UMO
recovery in each reservoir under a variety of development situations. Results of the individual
reservoir evaluations were extrapolated to groups of reservoirs with common depositional histories,
collectively known as "plays". At the regional level, reservoirs in three major oil producing states,
Texas, Oklahoma, and New Mexico, were analyzed to determine the resource volume, potential
recovery, and the costs and benefits associated with this recovery both in the individual states and
for the region as a whole. This analysis relied on the geologic classification of individual reservoirs,
specific rock and fluid properties, and production and development histories to quantify the
resource and to assess its potential for UMO recovery potential. Coordination of the studies at
two analytical levels proved advantageous -- the initial methods and results at both levels were
compared in order to calibrate and to modify the final approach at each level and can now be used
as a guide in future analyses. In addition to the specific results from the two analytical levels,
several shorter issue and summary papers have also been prepared.Bureau of Economic Geolog
A Bayesian conjugate gradient method (with Discussion)
A fundamental task in numerical computation is the solution of large linear
systems. The conjugate gradient method is an iterative method which offers
rapid convergence to the solution, particularly when an effective
preconditioner is employed. However, for more challenging systems a substantial
error can be present even after many iterations have been performed. The
estimates obtained in this case are of little value unless further information
can be provided about the numerical error. In this paper we propose a novel
statistical model for this numerical error set in a Bayesian framework. Our
approach is a strict generalisation of the conjugate gradient method, which is
recovered as the posterior mean for a particular choice of prior. The estimates
obtained are analysed with Krylov subspace methods and a contraction result for
the posterior is presented. The method is then analysed in a simulation study
as well as being applied to a challenging problem in medical imaging
In situ observations of waves in Venus’s polar lower thermosphere with Venus Express aerobraking
Waves are ubiquitous phenomena found in oceans and atmospheres alike. From the earliest formal studies of waves in the Earth’s atmosphere to more recent studies on other planets, waves have been shown to play a key role in shaping atmospheric bulk structure, dynamics and variability1, 2, 3, 4. Yet, waves are difficult to characterize as they ideally require in situ measurements of atmospheric properties that are difficult to obtain away from Earth. Thus, we have incomplete knowledge of atmospheric waves on planets other than our own, and we are thereby limited in our ability to understand and predict planetary atmospheres. Here we report the first ever in situ observations of atmospheric waves in Venus’s thermosphere (130–140 km) at high latitudes (71.5°–79.0°). These measurements were made by the Venus Express Atmospheric Drag Experiment (VExADE)5 during aerobraking from 24 June to 11 July 2014. As the spacecraft flew through Venus’s atmosphere, deceleration by atmospheric drag was sufficient to obtain from accelerometer readings a total of 18 vertical density profiles. We infer an average temperature of T = 114 ± 23 K and find horizontal wave-like density perturbations and mean temperatures being modulated at a quasi-5-day period
Rapamycin and CCI-779 inhibit the mammalian target of rapamycin signalling in hepatocellular carcinoma
Background: The mammalian target of rapamycin (mTOR), which phosphorylates p70S6K and 4EBP1 and activates the protein translation process, is upregulated in cancers and its activation may be involved in cancer development. Aims: In this study, we investigated the tumour-suppressive effects of rapamycin and its new analogue CCI-779 on hepatocellular carcinoma (HCC). Methods: Rapamycin and its new analogue CCI-779 were applied to treat HCC cells. Cell proliferation, cell cycle profile and tumorigenicity were analysed. Results: In human HCCs, we observed frequent (67%, 37/55) overexpression of mTOR transcripts using real-time reverse transcriptasepolymerase chain reaction. Upon drug treatment, PLC/PRF/5 showed the greatest reduction in cell proliferation using the colony formation assay, as compared with HepG2, Hep3B and HLE. Rapamycin was a more potent antiproliferative agent than CCI-779 in HCC cell lines. Proliferation assays by cell counting showed that the IC50 value of rapamycin was lower than that of CCI-779 in PLC/PRF/5 cells. Furthermore, flow cytometric analysis showed that both drugs could arrest HCC cells in the G1 phase but did not induce apoptosis of these cells, suggesting that these mTOR inhibitors are cytostatic rather than cytotoxic. Upon rapamycin and CCI-779 treatment, the phosphorylation level of mTOR and p70S6K in HCC cell lines was significantly reduced, indicating that both drugs can suppress mTOR activity in HCC cells. In addition, both drugs significantly inhibited the growth of xenografts of PLC/PRF/5 cells in nude mice. Conclusions: Our findings indicate that rapamycin and its clinical analogue CCI-779 possess tumour-suppressive functions towards HCC cells. © 2009 John Wiley & Sons A/S.postprin
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