1,035,507 research outputs found
Solubility data are compiled for metals in liquid zinc
Available data is compiled on the solubilities of various metals in liquid zinc. The temperature dependence of the solubility data is expressed using the empirical straight line relationship existing between the logarithm of the solubility and the reciprocal of the absolute temperature
A compiled catalog of rotation measures of radio point sources
We compiled a catalog of Faraday rotation measures (RMs) for 4553
extragalactic radio point sources ublished in literature. These RMs were
derived from multi-frequency polarization observations. The RM data are
compared to those in the NRAO VLA Sky Survey (NVSS) RM catalog. We reveal a
systematic uncertainty of about \,rad~m in the NVSS RM
catalog. The Galactic foreground RM is calculated through a weighted averaging
method by using the compiled RM catalog together with the NVSS RM catalog, with
careful consideration of uncertainties in the RM data. The data from the
catalog and the interface for the Galactic foreground RM calculations are
publicly available on the webpage: http://zmtt.bao.ac.cn/RM/.Comment: 17 pages, 8 figures. Published already, at
http://www.raa-journal.org/raa/index.php/raa/article/view/171
Reinforcing quantitative skills with applied research on tombstone-weathering rates.
This Journal of Geoscience Education article describes a tombstone weathering exercise that reinforces quantitative skills with applied research. The article describes an exercise designed and carried out by students in a surficial processes course. Students measured the rates of tombstone weathering, compiled and analyzed data. The complexity of the data involved in this exercise helps students demonstrate for themselves that mathematical analysis can give meaning to data. Educational levels: Graduate or professional, Undergraduate lower division
Statistical analysis of a comprehensive list of visual binaries
Visual binary stars are the most abundant class of observed binaries. The
most comprehensive list of data on visual binaries compiled recently by
cross-matching the largest catalogues of visual binaries allowed a statistical
investigation of observational parameters of these systems. The dataset was
cleaned by correcting uncertainties and misclassifications, and supplemented
with available parallax data. The refined dataset is free from technical biases
and contains 3676 presumably physical visual pairs of luminosity class V with
known angular separations, magnitudes of the components, spectral types, and
parallaxes. We also compiled a restricted sample of 998 pairs free from
observational biases due to the probability of binary discovery. Certain
distributions of observational and physical parameters of stars of our dataset
are discussed.Comment: 12 pages, 8 figure
Compiled data on the vascular aquatic plant program, 1975 - 1977
The performance of a single cell, facultative sewage lagoon was significantly improved with the introduction of vascular aquatic plants. Water hyacinth (Eichhornia crassipes) was the dominant plant from April to November; duckweed (Lemna spp.) and (Spirodela spp.) flourished from December to March. This 2 ha lagoon received approximately 475 cu m/day of untreated sewage and has a variable COD sub 5 loading rate of 22-30 kg/ha/day. During the first 14 months of operation with aquatic plants, the average influent BOD sub 5 was reduced by 95% from 110 mg/l to an average of 5 mg/l in the effluent. The average influent suspended solids were reduced by 90% from 97 mg/l to 10 mg/l in the effluent. Significant reductions in nitrogen and phosphorus were effected. The monthly kjeldahl nitrogen for influent and effluent averaged 12.0 and 3.4 mg/l, respectively, a reduction of 72%. The total phosphorus was reduced on an average of 56% from 3.7 mg/l influent to 1.6 mg/l effluent
Solar-geophysical data number 499, March 1986, supplement
This supplement contains the description and explanation of the data in the monthly publication Solar-Geophysical Data, compiled by the National Geophysical Data Center (NGDC) in Boulder, Colo., USA. Solar-Geophysical Data is intended to keep research workers informed on a timely schedule of the major events of solar activity and the associated interplanetary, ionospheric, radio propagation and other geophysical effects
User Defined Function: lidar_3D : NORSEWInD Report UoSNW006
This report describes the User Defined Function Lidar_3D used to interrogate FLUENT data files to provide the relevant data for the MathCAD LiDAR simulation program. The UDF was written in the C programming language and compiled using Microsoft visual studio 2008. This report contains a listing of the program (version 1.03). This report contains a description of the methodology required to compile the UDF so that it may be called by an "execute on demand" call from FLUENT. The report also includes a description of the input and output data file formats
Informetrics on accidents and trauma
MEDLINE database has been analysed for 1995-97 on index Accidents and Trauma. Publications output has been classified year-wise country-wise, journal-wise and other fine structure characteristics have been found. High frequency keywords have been identified. Other valuable data have been compiled. The value of informater for decision-making is brought out by this study and the comprehensive data compilation by MEDLINE is established
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