820 research outputs found
Avoidable Hospitalizations
Georgia Health Policy Center worked to improve health care in eight of the most rural, medically under served states in the country. The Center conducted research and provided strategic planning for eight Southern states: Alabama, Arkansas, Georgia, Louisiana, Mississippi, South Carolina, East Texas and West Virginia
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Texas coastal zone biotopes : an ecography : interim report for the Bay and Estuary Management Program (CRMP)
November 1972Because esthetics, biological environment and physiography are so interrelated and have changeable meanings in various environments, we are obligated to think of the environment in terms of biological change, as environmental protection is presently a basis for much dialogue and sometimes controversy. To do this we have chosen an old concept and adapted it to identify the relationships among biological communities that may be changed when man or nature modifies the coastal environment. The chosen term is BIOTOPE, which is defined in Webster's as a region uniform in environmental conditions and in populations of animals and plants for which it is the habitat. Although the biological environment may appear to the layman as either diverse or uniform and without pattern, there are recognizable biotic assemblages that have some degree of relationship in their composition. Such recognizable assemblages may cover wide areas, such as the extensive turtle grass flats, or may be discrete small units, such as an oyster reef. Thus we have adapted the term BIOTOPE to identify such assemblages and initially suggest the following eighteen examples listed in Table 1. Thirteen of them plus an overview are illustrated. ... If the concept of the BIOTOPE is to be used to describe common, recognizable Texas Gulf coast communities, then we can use these descriptions to demonstrate the results of changes. For example, if one plans to dredge a grass flat to produce a spoil bank and a channel, the Biotopes of these three areas can be compared to allow the decision maker to evaluate how the change may affect the area involved. Because the decision maker is not always scientifically oriented, we have elected to describe the Biotope by artists' renditions accompanied with lists of common and scientific names of major species of plants and animals and a description of the relative productivity of the major organisms in the area.Supported in part by Coastal Resources Management Program, Office of the Governor, IAC (72-73)-806, and The National Science Foundation RANN, Grant GI-34870XMarine Scienc
THE FARMER'S GRAIN MARKETING GUIDE
Crop Production/Industries, Marketing,
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Millimetre and submillimetre molecular line observations of the reflection nebula NGC 2023
Observations in the CO J = 2 - 1, CO J = 3 - 2 and HCO+ J = 4 - 3 transitions of the molecular cloud associated with NGC 2023 are presented. The observations reveal the complex structure of the gas in the surrounding cloud, and show the presence of several hot-spots which may represent separate bodies of gas. A search has been made for the source of excitation of two nearby groups of Herbig-Haro objects recently discovered by Malin et al. (1987). No such objects can be clearly identified from the data. CO J = 3 - 2 spectra taken at positions lying on the CO J = 1 - 0 shell observed by Gatley et al. (1987) show marked enhancements in peak line strength relative to coincident CO J = 2 - 1 data. By contrast, no such enhancements are observed away from the shell. Observations of the submillimeter wavelength HCO+ J = 4 - 3 transition show that the line strength is greatest in the vicinity of the shell structure. Simple large velocity gradient modeling of the excitation conditions of the shell material suggests that the gas may be hot (Tkin ~ 140 K), dense, and optically thin
Quantifying and Interpreting Striations in a Subtropical Gyre: A Spectral Perspective
The amplitude, origin, and direction of striations in the subtropical gyre are investigated using simulated and analytical multidimensional spectra. Striations, defined as banded structures in the low-frequency motions, account for a noticeable percentage of zonal velocity variability in the east North Pacific (ENP: 25°–42°N, 150°–130°W) and central North Pacific (CNP: 10°–22°N, 132°E–162°W) regions in an eddying global ocean model. Thus, they likely are nonnegligible in mixing and transport processes. Striations in the ENP region are nonzonal and are embedded in the nonzonal gyre flow, whereas striations in the CNP region are more zonal, as are the mean gyre flows. An idealized 1.5-layer model shows the gyre flow partially determines their directions, which qualitatively resemble those in the global eddying model. In the linear limit, structures are quasi-stationary (frequency ω → 0) linear Rossby waves and the gyre flow influences the direction by influencing the nature of the zero Rossby wave frequency curve. In the nonlinear regime, striations are consistent with the nondispersively propagating eddies, whose low-frequency component has banded structures. The gyre flow influences the striation direction by changing the eddy propagation direction. Their origin in the nonlinear regime is consistent with the existence of a nondispersive line in the frequency–wavenumber spectra. This study does not exclude other striation mechanisms from literature, considering that the interpretations here are based on an idealized model and only from a spectral perspective.United States. National Aeronautics and Space Administration (NNX09AI87G)United States. National Aeronautics and Space Administration (NNX08AR33G)United States. National Aeronautics and Space Administration (NNX11AQ12G
Dual infections of CD163 expressing NPTr epithelial cells with influenza A virus and PRRSV
In the pig, respiratory co-infections involving various pathogens are far more frequent than single infections.
Amongst respiratory viruses, swine influenza type A virus (swIAV) and porcine reproductive and respiratory
syndrome virus (PRRSV) are frequently associated. Previously, we performed co-infections with swIAV and
PRRSV in porcine alveolar macrophages (PAM) and precision cut lung slices (PCLS). With these two approaches
it was practically impossible to have co-infections of the same cells as the main target cell of swIAV is the
epithelial cell while the main target of PRRSV is the PAM. This constraint makes the study of interference
between the two viruses difficult at the cellular level. In the current report, an epithelial cell line expressing,
CD163, the main receptor of PRRSV was generated. This cell line receptive for both viruses was used to assess the
interference between the two viruses. Results showed that swIAV as well as PRRSV, even if they interacted
differently with the modified epithelial cells, were clearly interfering with each other regarding their replication
when they infected a same cell with consequences within the cellular antiviral response. Our modified cell line,
receptive to both viruses, can be used as a tool to assess interference between swIAV and PRRSV in a same cell as
it probably happens in the porcine host
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