292 research outputs found
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HMS support. Final report, May 14, 1990--June 7, 1991
No full textThe author provided consultation for the new development and assessment of the production version of HMS (renamed GASFLOW) and experimental version of HMS. He performed assessment calculations with HMS for comparisons with GASFLOW and documented HMS and GASFLOW assessments and activities. No problems were encountered and he recommends continuing development of the GASFLOW code
Hyperreactive Malarial Splenomegaly (HMS) in Malaria Endemic Area in Eastern Sudan
No full textHyrerreactive Malarial Splenomegaly (HMS) is a condition affecting
adults in certain malarious areas. The present work was carried out in
Kassala city, Eastern Sudan where HMS is considered as highly
prevalent. The objectives of the study were to describe the epidemiology
and magnitude of the disease in the area, help local clinicians to diagnose,
and differentiate HMS cases from other diseases causing splenomegaly
and to apply modern investigative methods particularly Nested
Polymerase Chain Reaction (PCR) for detection of malaria parasites in
HMS cases.
A cross-sectional study was carried out in four health centers in the city
between January and March 2004. 114 (11.2%) out of 1010 medical cases
were reported had enlarge spleens. Identification using the major
diagnostic criteria supported by clinical and laboratories investigations
was revealed that 87 (8.6%) cases were HMS.
All the cases included in this study are permanent residents of Kassala
city. Forty one percent patients are Beni Amer, 25% Shaikia, 19.5%
Hadendoa and 14% are from other tribes. Sixty three percent of HMS
cases were males and 37% were females. The mean age of 27.7 years
(median= 25 years).
Clinical investigations showed that all cases suffered from abdominal
pain in upper left quadrant and all had palpable firm spleen (10-26 cm)
from the costal margin. Most of cases gave a past history fever associated
with headache. The mean value of body temperature of all studied
patients is in normal range (37ºC)
The Immunological Characterization of Hyper-reactive Malarial Splenomegaly Syndrome (HMS) in Sudan
No full textThe present work aied at studying the immunological characterization of
Hyper-reactive Malarial Splenomegaly Syndrome in Sudan. A hospital
based study was carried out in the period between January 2000 and
December 2004 in Ommdurman Tropical Diseases Hospital. HMS patients
were interviewed and they had many investigations to differentiate HMS
from other diseases which cause splenomegaly. Thirty one samples were
collected to determine the molecular characterizations of the malaria parasite
and to determine immunological responses to malaria candidate
Circumsporozoite protein (CSP), also to measure the level of total IgM in
Sudanese HMS patients' sera and to measure their cytokines (IL-10 & IFNγ).
Males were found more affected by the disease (61%male - 38%female).
The most common age group affected was between eleven and thirty two.
Microscopic detection has shown that only one HMS patient had positive
blood film for P. falciparum. No other malaria parasite species were
detected. Using PCR the result was in agreement with the microscopic
examinations P. falciparum parasite was detected in one patient, and no
infection with P. vivax was detected.
IgG antibodies to malaria specific antigen (CSP) were measured in 31 sera
samples, IgG titers were found to be high but not significant in HMS
patients compared with positive malaria control, whereas positive malaria
controls showed significantly higher titers compared with European negative
malaria control (P=0.005)
Optimering inför insats : en idealtypsanalys av korvetten HMS Stockholm
No full textI och med Försvarsmaktens omställning till insatsförsvar med internationella åtaganden har sannolikheten för att marina förband ska nyttjas för väpnad strid ökat markant. Med detta följer ett än större behov av att kunna hantera sådana prövningar. I den här uppsatsen provas idealtypsanalys som metod att mäta korvetten HMS Stockholms effektivitet ur ett organisationsteoretiskt perspektiv. Idealtypen, referensfartyget ”HMS Excellence”, skapas genom att använda 7s modellen (Waterman et al.) för att åskåda organisationen och resultat från den Amerikanska studien ”Excellence in the Surface Navy” (Gullickson & Chenette) som indikatorer för effektivitet. Genom att presentera intervjudata från HMS Stockholm i samma dimensioner skapas ett underlag för analys. Resultaten från uppsatsen visar att HMS Stockholm är ett effektivt stridsfartyg med vissa organisatoriska brister vars orsak kan spåras till intensiteten i pågående insatsförberedelser. Vidare visar analysen att 7s modellen har potential att vara ett användbart verktyg för att optimera ett stridsfartygs organisation samt som en komponent i idealtypsanalys.Because of the Swedish Armed Forces reformation from an operational defense force to a rapid action force with international commitments the odds of naval units being involved in armed confrontation has distinctively increased. This leads to an even greater need for battle readiness. In this thesis ideal type analysis is tried as a method to assess the efficiency of the Swedish warship HMS Stockholm from an organization theoretical perspective. The ideal case, a reference war ship named HMS Excellence, is created by combining results from Gullickson & Chenettes study Excellence in the Surface Navy, with the 7s framework. HMS Stockholm is presented in the same manner combining interview data with the 7s framework. The difference between the ideal case and empirical case is used as a measurement of HMS Stockholm´s efficiency. The author concludes that HMS Stockholm is an effective organization with an occasional weakness in the systems dimension due to the intensity of deployment preparations. Also, the author argues for ideal type analysis, using the 7s framework, as a tool to optimize deployment preparations and the 7s framework as a tool to optimize war ship organizations
Application of HEC-HMS for the Assessment of Water Availability in Fincha and Didessa Sub-basin, Ethiopia
No full textThe water resources availability assessment required for determination of optimal allocation and planning of water resources. This study is mainly focus on the water resources availability in the Fincha and Didessa sub-basin of Ethiopia by using HEC-HMS. The performance of the model was assessed via calibration at gauging station using Relative Volume Error (D), coefficient of determination (R2) and Nash-Sutcliffe Efficiency (NSE) performance coefficients. Then the model was validated using the parameters optimized during model calibration. The availability of water resources assessed at different watershed created to see at local level and finally at outlet point to Main River for each sub-basin separately. The HEC-HMS model shows a good performance Little anger which resulted D=2.58, R2=0.75 and NSE=0.63 during calibration and D=4.32, R2=0.77 and NSE=0.46 during validation and Neshi D=-1.37, R2=0.53 and NSE=0.58 during calibration and D=6.98, R2=0.68 and NSE=0.58 during validation for Didessa and Fincha Sub basin respectively. The parameters optimized at little Anger and Neshi gauging station was used for flow simulation to assess water resources availability on monthly and annual basis. The flow components were also separated at small catchment considered for all sub-basin. The result shows that high percentage of flow occupied by Direct Runoff for both Didessa and Fincha sub basins. So the available water in the sub-basins should be allocated fairly and accurately for water resources projects for effective utilization of the country water resources. Keywords: Fincha and Didessa sub-basin, HEC-HMS, Water Resources Availability. DOI: 10.7176/JEES/10-11-05 Publication date: November 30th 202
comaw Staff and hms Fearless 1982
No full textCombatant memoirs are a valuable source for historians of conflict in general and of the Falklands War in particular, revealing experiences of war that would otherwise be beyond recovery. This chapter provides a previously unpublished memoir (written in 2006) of the Falklands War by Lieutenant Commander Michael Ambler (d. 2009), who served on the staff of Commodore Michael Clapp on hms Fearless. Included in the footnotes are entries from the diary kept by the author day by day during the course of the war. The memoir is introduced by Professor Helen Parr, who places the account in the broader context of autobiographical writings on the Falklands War and draws attention to its potential value as a primary source for historians of conflict
ASSESSING THE PERFORMANCE OF RACINUS COMMUNIS (L.) IN DECONTAMINATING HEAVY METALS POLLUTED SOIL USING PHYTOEXTRACTION STRATEGY
No full textGlobally, our environments (soil, water and air) are increasingly exposed to heavy metals (HMs) contaminations through natural and anthropogenic activities. Thus, it is a matter of great significance to remediate these metals from the ecosystem in order to maintain a safe and healthy environment. The research was carried out to evaluate the phytoextraction capacity of Racinus communis (L) grown on contaminated soils with HMs obtained from three sites in urban Kano. The physicochemical parameters of the soil samples were analysed using Near-Infrared spectrometer (NIRS D-2500) and other standard procedures. The HMs concentrations were analyzed using Micro Plasma Atomic Emission Spectrometer (MPA-ES, Model 4210). The degree of HMs contaminants were evaluated using Mueller’s Geoaccumulation Index (Igeo). Data were statistically analysed using one way Analysis of Variance at P<0.05. The physicochemical results revealed that all the soil samples were sandy-loam in texture and slightly acidic with pH values ranging between (6.11±0.02-5.02±0.06). Other concentration of soil physicochemical parameters varies across the soil samples. The results of the HMs analyses across the soils revealed highest concentrations of Fe (311.02 ±0.04 mg/kg), Cu (208.62±0.01 mg/kg) and Zn (112.04±0.04 mg/kg) in soil sample A, Pb (34.03±0.16 mg/kg) and Cr (4.63±0.03mg/kg) were observed to be higher in soil sample C, while the highest concentration of Cd (1.20±0.00 mg/kg) was recorded in soil sample B. Relatively all the concentrations of HMs in the contaminated soil samples after the experiment were defined uncontaminated to moderately contaminated based on Igeo values. The findings provide scientific evidence that R. communis can be used as a veritable tool for the control of HMs pollution in the soil
Heavy Mineral Sands Exploration in the Republic of Guinea
No full textThe aim of this thesis study is to increase the geological knowledge on the presence of Heavy Mineral Sands (HMS) in the concession areas owned by Guinea Alluvial Mining (GAM) in Guinea. In order to achieve this aim the following main research question has been formulated: Does exploration of the concession areas show sufficient Heavy Mineral Sand prospectivity for further exploration? To answer this main research question, the following secondary research questions have been formulated: 1) What are the industry standards for HMS deposits? 2) Does literature research indicate that HMS could be discovered in the concession areas? 3) Do the exploration results show sufficient HMS exploration potential when compared to the industry standards for HMS deposits? In order to answer these research questions a literature study has been conducted and exploration has been conducted in Guinea. In the literature study the key parameters which form HMS and the main characteristics of HMS reserves have been researched. The literature research shows that the concession areas, owned by GAM, could contain HMS deposits. The exploration results show that two locations contain HMS and VHM (ilmenite, rutile and zircon) anomalies. These locations are situated in the sandy coast. The other geological domains in the concession areas (paleo strandlines, hydromorphic terraces and ancient terraces) did not show HMS and VHM anomalies. To estimate an exploration target for future exploration the block model method has been used. An estimation of the exploration target size has been estimated for a worst and a best case scenario. In the best case scenario, the Total Heavy Mineral (THM) content in the first two meters of sandy coast is assumed to be continuous. In the worst case scenario, the Total Heavy Mineral (THM) content in the first two meters of sandy coast are discontinuous. In this worst case scenario, the only locations which contain HMS mineralization are the locations which have been sampled. It is concluded that the estimated exploration target size, based on the explored areas, shows insufficient HMS and VHM mineralization to have resaonable prospects to eventually be mined. However, the estimation of the exploration target is only based on the sampled geological domains. The area west of Taboriyah contains a sandy coastline which has not been explored yet and has therefore not been taken into account when estimating the exploration target size. In addition, the exploration target is based on the first 2 meters of sediment in the sandy coast. If a drilling survey is conducted HMS could be found deeper than 2 meters. Therefore, sufficient HMS exploration potential remains for the concession areas to be prospective.Resource Engineering / Earth SciencesGeoscience & EngineeringCivil Engineering and Geoscience
Improving higher manganese silicide thermoelectric material by phonon scattering with nanostructures
No full textMatching the increase in energy demand while also reducing the greenhouse gas emission is a worldwide problem. Thermoelectrics have the potential to fit in everywhere, recovering waste heat to generate electricity. Higher manganese silicide (HMS) is a thermoelectric material made from abundant elements, with promising performance for temperatures of 700 to 900 K. In this research, HMS samples containing SiO2 and TiO2 nanoparticles were prepared using ball milling and spark plasma sintering to reduce the thermal conductivity of HMS by phonon scattering. The microstructure of the samples was evaluated with SEM/EDS and XRD, confirming the presence of the nanoparticles inside the HMS. TiO2 nanoparticles were reduced to Ti2O3. Room temperature thermal conductivity measurements show that adding 2 vol% nanoparticles reduces the thermal conductivity by more than 10% for both SiO2 and TiO2 nanoparticles. As a side-effect, the material became denser with added nanoparticles, resulting in a higher electrical conductivity benefitting the thermoelectric performance. However, the reaction between manganese and silicon is incomplete when nanoparticles are present, leading to increased MnSi and silicon phases resulting in a 10% decreased Seebeck coefficient. The nanoparticles successfully improved the thermoelectric performance of HMS, and with further improvements such as preventing the MnSi phase from forming and doping the material to increase electrical conductivity, HMS is a promising thermoelectric material.Electrical Engineering | Sustainable Energy Technolog
The Wreck of the Brazen Sloop of War
No full textTale of the HMS Brazen Sloophttps://egrove.olemiss.edu/kgbsides_uk/1958/thumbnail.jp
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