1,455 research outputs found
Solar Energy Utilization for Water Heating
Import 03/08/2012Bakalářská práce je zaměřena na běžný návrh solární soustavy pro rodinný dům, k přípravě teplé vody. Úvodem je zaměřena kromě samotného ohřevu vody také na jiné přednosti plynoucí z možnosti využívání energie ze Slunce. Po základním seznámením využíváním tohoto obnovitelného zdroje, je již detailněji zacíleno na problematiku využití v domě. Ta hlavně tkví ve své zeměpisné poloze a klimatických podmínkách, od kterých se odvíjí energetické zisky, a charakteristických požadavků rodinného domu. Dále je zaměřena na technické požadavky spojené provozem a předběžné ekonomické a enviromentální hodnocení spojené s provozováním systému až do své životnosti.The bachelor thesis is focused on the common design of solar systems for single-family house, the preparation of hot water. First, it focuses very hot water in addition to other advantages also from the possibility of using energy from the sun. After familiarizing the basic use of this renewable resource has been targeted more detail on the issue of use in the house. It lies mainly in its geographical location and climatic conditions, which have influence on energy gains, and the characteristic requirements of the house also is focused on the technical requirements related to operation and preliminary economic and environmental assessment associated with the operation of the system until his life.361 - Katedra energetikyvýborn
Характерні особливості спілкування учасників педагогічного процесу у ВНЗ
У статті проаналізовано особливості комунікативних аспектів у системі вищої освіти, визначено психологічну специфіку взаємодії викладачів і студентів на міжособистісному рівні, а також окреслено особливості викладання, що підвищують ефективність навчального процесу у ВНЗ, створюють умови для самореалізації студента.
(The article analyzed the features of communicative aspects in higher education, defined psychological specificity of the interaction of teachers and students at the interpersonal level. And also outlined some features of teaching that enhance the effectiveness of teaching at the university, and create conditions for self-fulfillment of the student.
Craig Coch Field Surveys Group meeting, Malvern February 1976: UWIST Paper 4. Invertebrates: River Wye
Except for a single summer survey by Morgan (1970) no significant investigations of the invertebrate fauna of the R. Wye have been undertaken as far as we are aware. The current programme was designed to describe the distribution and relative abundance of aquatic invertebrates, in the R. Wye and those tributaries relevant to the proposals to regulate discharge in the river system. In addition, a more intensive localised study has been established to describe the population dynamics of selected invertebrate communities more precisely and to establish the feasibility of assessing the effect of secondary production of regulating discharges. Complementary studies on the drift of invertebrates have been undertaken. These data will be needed as a basis for evaluating the effects of the proposed Craig Goch scheme on the invertebrate fauna in the Wye catchment
Craig Coch Field Surveys Group meeting, Malvern February 1976: UWIST Paper 7. River Wye vegetation survey
The problem as stated in the contract for this survey is that “the River Wye is regarded as a Grade 1 site in the Nature Conservation Review. The enlargement of an existing reservoir at Craig Goch in Powys intended eventually to regulate the river flow within the Wye and Severn could have an undesirable and adverse effect upon the ecology and Nature Conservation interest of the River Wye.”
The object of this survey, again as stated in the Nature Conservancy Council contract, is “to determine the distribution of aquatic and marginal plants within the River, Wye, which is defined loosely as the river plus its retaining banks. To study aspects of the ecology of riparian habitats by relating distribution to recorded variables, and suggest possible means of management.”
It is proposed that the vegetation survey is to take 60% of the available time and the experimental side 40%. Mr. D.G. Merry has been appointed as a research assistant for three years to work on the project under the supervision of Dr. F.M. Slater
Craig Coch Field Surveys Group meeting, Malvern February 1976: UWIST Paper 5. Invertebrate studies: Ystwyth & Rheidol
The Rivers Ystwyth and Rheidol have a history of metal pollution (Carpenter 1924, 1925: Newton 1944): many reaches still receive substantial volumes of water contaminated with heavy metals, principally zinc and lead, although there has been considerable improvement in water quality and biological status in recent years, particularly in the R. Rheidol (Jones & Howells 1969). As a consequence of proposals to divert uncontaminated water from the headstreams of both rivers in order to provide a refill source for the enlarged Craig Goch Reservoir, a surveillance programme was instituted to provide base-line data for water quality, fisheries and invertebrates. U.W.I.S.T., under contract to W.N.W.D.A., has implemented a programme which will provide information on the variety, distribution and relative abundance of aquatic invertebrates: the study of other aspects has been undertaken by South West Wales River Division (1976)
Craig Coch Field Surveys Group meeting, Malvern February 1976: UWIST Paper 6. Submerged macrophytes of the R. Wye
Substantial growths of aquatic macrophytes are known to occur in the lower reaches of
the R. Wye during the summer months and in 1975 the distribution of major plant species
was assessed and the biomass of representative plant stands estimated in one 30 km
stretch. This very modest programme has now been complemented by a more
comprehensive study of macrophytes of the R. Wye by UWIST, under contract to Nature
Conservancy Council (UWIST 1976g)
Craig Coch Field Surveys Group meeting, Malvern February 1976: UWIST Paper 2. Fisheries studies - R. Wye
Although the Wye is well known for its salmon fisheries, no data, other than very basic fisheries statistics (Wye River Division Annual Reports) are available to assess the status of these fisheries. The current programme, primarily restricted to the upper reaches of the river where the effects of regulation are likely to be greatest, is intended to describe the distribution of salmonid and coarse fish and to assess the stock of salmonid species.
In a large river like the Wye where conventional sampling techniques are generally inadequate (E.I.F.A.C. 1974) only certain species and life-stages are likely to be sampled adequately. In order to supplement data collected from the main river a number of representative tributaries, above and below the proposed point of regulation of the river have been studied, primarily to obtain base-line data so that any major change in the distribution of salmon can be detected.
In order to establish some relationship between spawning adult salmon and recruitment, a programme of adult trapping on a nursery tributary was undertaken during November and December 1975.
In conjunction with W.N.W.D.A. (Brecon) and the Wye River Division, a programme has been designed to assess the catchability of adult salmon in the River Wye
Craig Goch Report No. 12 The production of two species of Ephemeropters (Ephemerella ignita PODA and Rhithrogena semicolorata CURTIS) in the upper reaches of the R. Wye, Wales
As part of a base-line ecological study of the R. Wye related to the construction of an
enlarged Craig Goch, a proposed major regulating reservoir in the upper catchment which
will be filled from a variety of sources, two sites (W2 and W3) in the headwaters were
intensively studied during the period March 1975 – April 1976 and estimates of production
made for two species of Ephemeroptera. Both study sites are typical salmon nursery
areas with a substrate of cobbles and coarse gravel forming a ‘riffle’ habitat. The water,
similar at both sides, is soft (mean calcium concentration = 4.1 mg/l) and low in inorganic
nutrients.
Samples, taken weekly during the summer and less frequently at other times, were
collected from each riffle on a stratified random basis using a cylinder sampler (area,
0.05m2
) modified after Neill (1938). Seven replicate samples were taken with weekly
sampling and 14 at other sampling frequencies. The wetted area of each site was
measured frequently throughout the study
Surgical Treatment of Mirizzi Syndrome
The results of treatment of 53 patients with Mirizzi syndrome are presented in the work. The article focuses on the modern classification of syndrome, diagnostics and surgical approach according to the severity of duct damage. Mirizzi syndrome proves to be the complication of cholelithiasis. It is one of the most complicated problems of biliary surger
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