1,370,155 research outputs found
The Pulse, Volume 06, No. 5, 1903
•Alfred O. Peterson, A.M., M.D.
•The Diagnosis and Treatment of Chronic Gastritis-Alfred O. Peterson, A.M., M.D.
•Faculty Department-William F. Milroy, M.D., Editor
•Editorial
•Clinical Notes-Charles H. Root, \u2703, Editor
•Alumni Department
•Class Noteshttps://digitalcommons.unmc.edu/com_pulse/1004/thumbnail.jp
Investment prospects in inshore trawling in Nigeria
Commercial trawling for finfish in Nigeria's inshore water is a recent activity. Intensive industrial trawling started when the Federal Government distributed trawlers to viable fishermen cooperatives during the Third National Development Plan Period (1975-80). Hitherto, industrial fisheries development in the country focused on the assessment of the potential fish stock on Nigeria's continental shelf and measures to increase artisanal production. As a result of increasing demand for fish and shortage of foreign exchange to import fish, measures to increase fish supply leaned towards industrial exploitation of the fisheries potentials of Nigeria's continental shelf. Based on this background, this paper examines the investment prospects of trawling for fish in inshore waters. The fisheries potentials of the inshore zone of Nigeria are identified. Catch efficiency and profitability of inshore trawling are estimated. Measures that can safeguard the longterm interest of the trawling industry are recommende
Complement deficiencies limit CD20 monoclonal antibody treatment efficacy in CLL
Monoclonal antibodies (MAbs) form a central part of chronic lymphocytic leukaemia (CLL) treatment. We therefore evaluated whether complement defects in CLL patients reduced the induction of complement-dependent cytotoxicity (CDC) by using anti-CD20 MAbs rituximab (RTX) and ofatumumab (OFA). Ofatumumab elicited higher CDC levels than RTX in all CLL samples examined, particularly in poor prognosis cohorts (11q− and 17p−). Serum sample analyses revealed that 38.1% of patients were deficient in one or more complement components, correlating with reduced CDC responses. Although a proportion of patients with deficient complement levels initially induced high levels of CDC, on secondary challenge CDC activity in sera was significantly reduced, compared with that in normal human serum (NHS; P<0.01; n=52). In addition, a high CLL cell number contributed to rapid complement exhaustion. Supplementing CLL serum with NHS or individual complement components, particularly C2, restored CDC on secondary challenge to NHS levels (P<0.0001; n=9). In vivo studies revealed that complement components were exhausted in CLL patient sera post RTX treatment, correlating with an inability to elicit CDC. Supplementing MAb treatment with fresh-frozen plasma may therefore maintain CDC levels in CLL patients with a complement deficiency or high white blood cell count. This study has important implications for CLL patients receiving anti-CD20 MAb therapy
Protein and amino acid requirements of warm-water fishes: a tool to efficient and low-cost fish feed production in Nigeria
Numerous investigations have utilized various semi-purified and purified diets to estimate the protein and amino acid requirements of several temperate fishes. The vast literature on the protein and amino acid requirements of fishes has continued to omit that of the tropical warm water species. The net effect is that fish feed formulation in Nigeria have relied on the requirement for temperate species. This paper attempts to review the state of knowledge on the protein amino acid requirements of fishes with emphasis on the warm water species, the methods of protein and amino acid requirement determinations and the influence of various factors on nutritional requirement studies. Finally evidence are presented with specific examples on how requirements of warm water fishes are different from the temperate species and used this to justify why fish feed formulation in Nigeria are far from being efficien
Performance of a TV white space database with different terrain resolutions and propagation models
Cognitive Radio has now become a realistic option for the solution of the spectrum scarcity problem in wireless communication. TV channels (the primary user) can be protected from secondary-user interference by accurate prediction of TV White Spaces (TVWS) by using appropriate propagation modelling. In this paper we address two related aspects of channel occupancy prediction for cognitive radio. Firstly we investigate the best combination of empirical propagation model and spatial resolution of terrain data for predicting TVWS by examining the performance of three propagation models (Extended-Hata, Davidson-Hata and Egli) in the TV band 470 to 790 MHz along with terrain data resolutions of 1000, 100 and 30 m, when compared with a comprehensive set of propagation measurements taken in randomly-selected locations around Hull, UK. Secondly we describe how such models can be integrated into a database-driven tool for cognitive radio channel selection within the TVWS environment
UNICEF IWASH Project, Northern Region, Ghana : an adapted training manual for groundwater development
This report is an adapted training manual, with specific best practice recommendations for
groundwater development practitioners working in the Northern Region, Ghana. It is designed to
be used in conjunction with the existing comprehensive training manual ‘Developing
Groundwater: a guide to rural water supply’ by MacDonald, Davies, Calow and Chilton (2005).
The additional guidelines provided in this supplementary report are specific to the Northern
Region of Ghana, and have been informed by a review of groundwater development in the
region which BGS carried out on behalf of UNICEF in 2010-2011.
The Northern Region is a difficult area in which to find and develop groundwater resources. For
this reason, more resources – time and money – need to be focussed on careful borehole siting
and development in order to maximise success. This includes detailed desk and field
reconnaissance surveys; the effective use and interpretation of geophysical siting methods;
collection of good quality data during drilling and test pumping; rigorous recording and
management of data; and effective interpretation, sharing and use of hydrogeological
information by all groundwater development practitioners. This report, and the associated
manual ‘Developing Groundwater’, provide practical help for carrying out these activities
effectively.
The authors gratefully acknowledge those persons who contributed to the formation of these
guidelines, who include:
UNICEF Ghana – Othniel Habila, Kabuka Banda and David Ede
Community Water and Sanitation Agency (CWSA), Ghana – John Aduakye
Canadian International Development Agency (CIDA) – Hydrogeological Assessment
Project (HAP) – James Racicot
All participants at the UNICEF/BGS workshop and training programme held in Tamale,
Northern Region, from 7 to 18 February 2011
User guide : Aquifer Productivity (Scotland) GIS Datasets. Version 2
This report describes a revised version (Version 2) of the aquifer productivity (Scotland) datasets
produced by the British Geological Survey (BGS). There are two maps: bedrock aquifer
productivity and superficial deposits aquifer productivity. Version 1 of these datasets was
produced in 2004. Version 2 uses updated geological linework and a slightly modified
methodology.
The aquifer productivity maps describe the potential of aquifers across Scotland to sustain
various levels of borehole water supply, and the dominant groundwater flow types in each
aquifer. The bedrock aquifer productivity map has five aquifer productivity classes (very high,
high, moderate, low and very low); and three groundwater flow categories (significant
intergranular flow; mixed fracture/intergranular flow; and fracture flow). The superficial deposits
productivity map has four productivity classes (high; moderate to high; moderate; and a category
to signify that a deposit is ‘not a significant aquifer’). All superficial deposits aquifers in
Scotland are assumed to have primarily intergranular groundwater flow.
The aquifer productivity maps are a tool to indicate the location and productivity of aquifers
across Scotland. They have been used to help characterise groundwater bodies as required by the
Water Framework Directive, and may have several other uses, including in policy analysis and
development; to prioritise aquifer and site investigations; to inform planning decisions; and to
improve awareness of groundwater in general. The complexity and heterogeneity of geological
formations means that the maps are only a guide. They are designed to be used at a scale of
1:100,000, and not to assess aquifer conditions at a single point
Tiger Talk Fall 1987
Announcements and news for the Olivet Community, published each Thursday of the school year by the Director o Student Activities. Copy deadline: Wednesday 9 A.M
Baseline Scotland : groundwater chemistry of the Carboniferous sedimentary aquifers of the Midland Valley
This report describes the baseline groundwater chemistry of the sedimentary aquifers of Carboniferous age in the Midland Valley of Scotland. Groundwater is an important resource in the Midland Valley, largely for agriculture, but also for industry – including food and drink processing and mineral water bottling, and for domestic use. A large but unquantified volume of groundwater is also still pumped from former mine workings, largely coal mines, in order to maintain water levels and for quality treatment.
Analyses for 62 groundwater samples were interpreted for the purposes of this study. Of these, 36 samples were collected for the Baseline Scotland project between September and December 2008. These were augmented with a further 25 samples collected during separate BGS projects since 2001. The sites were chosen largely to be representative of groundwater in the area, and sources that were very poorly constructed were avoided. A small number of samples were deliberately targeted from mines, either from adits, shafts or boreholes. The data were classed in one of five different hydrogeological units (or aquifer groups): four chronostratigraphic groups, which in decreasing order of age are the Inverclyde, Strathclyde, Clackmannan and Coal Measures groups; and a fifth group incorporating waters sampled from mine discharges.
An estimate of the baseline groundwater chemistry conditions in the four chronostratigraphic hydrogeological units is presented, based on a statistical summary of the chemical data, which represents values between the 10th and 90th
A summary of the conclusions arising from this study follows. percentiles of the full dataset range. This statistical approach to estimating baseline compositions was complemented by selecting 11 analyses of groundwater from sources where there is little or no indication of direct contamination, including likely impact from mining. The chemistry of these samples represents the typical groundwater conditions in the four non-mine hydrogeological units in the sedimentary Carboniferous aquifers of the Midland Valley
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