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Articles 289321 - 289350 of 302965

Full-Text Articles in Physical Sciences and Mathematics

The Prediction Of The Temperature Of Small Clear Streams, Robert Nelson Crittenden Jan 1977

The Prediction Of The Temperature Of Small Clear Streams, Robert Nelson Crittenden

University of the Pacific Theses and Dissertations

A theoretical energy balance model was used to predict water temperatures in small clear streams which have limited heat transfer due to ground water flow. The model was designed for application to coastal streams in central California to determine reservoir release policies that would improve downstream salmon habitat by altering stream temperatures. The results of the model are predicted to be applicable to small clear streams in moderately calm and humid areas throughout the temperate zone, where the winters are not prolonged, and where there is little ground Hater flow.. It predicts that all turbulently flowing wateracts ,. identically. It …


Kinetics And Stoichiometry Of The Aquation Reaction Of Pentaaquodihalomethyl Chromium(Iii) Ions, Mohammad Javaid Akhtar Jan 1977

Kinetics And Stoichiometry Of The Aquation Reaction Of Pentaaquodihalomethyl Chromium(Iii) Ions, Mohammad Javaid Akhtar

University of the Pacific Theses and Dissertations

This study was designed to provide information about the mechanisms of pentaaquodihalomethyl chromium(III) ions (halo chloro, bromo and iodo).

...

Mechanisms based on carbonium ion, carbeno and carbenoid type intermediates are proposed. A mechanism based on the nucleophillic attack (SN2) of water on the carbon center leading to a metal-formyl type intermediate is suggested as best fitting all the criteria observed in these studies.

(see PDF file for additional Abstract as it includes formulas)


The Partial Purification And Characterization Of A Soluble Activator Of The Cation Transport Adenosinetriphosophatase In Bovine Caudate Nucleus, Paul Culver Jan 1977

The Partial Purification And Characterization Of A Soluble Activator Of The Cation Transport Adenosinetriphosophatase In Bovine Caudate Nucleus, Paul Culver

University of the Pacific Theses and Dissertations

To many investigators, these observations suggested the existence of a molecular “pump” mechanism responsible for the maintenance of the ionic gradients. Extensive research over the last twenty years has resulted in the assignment of this role to the magnesium-dependent, sodium- and potassium-stimulated adenosine triphosphatase, first reported by Skou in 1957. This membrane-bound enzyme is the subject of the research presented in this thesis.


Group Theoretical Studies Of The Periodic Chart And Of Configuration Mixing In The Ground State Of Helium, Yutaka Kitagawara Jan 1977

Group Theoretical Studies Of The Periodic Chart And Of Configuration Mixing In The Ground State Of Helium, Yutaka Kitagawara

University of the Pacific Theses and Dissertations

Recently Wulfman found great merit in Barut's idea on atomic super-multiplets, and he introduced the concept of the generalized Hamiltonian that is the Hamiltonian of all atoms. 24 Investigating the Schrodinger equation with this generalized Hamiltonian, it should be possible to relate the properties of different atoms and find the structure of the periodic chart from fundamental principles of dynamics and group theory. One can can use the same kinds of methods for relating the properties of different states of a single hydrogen atom with the aid of the degeneracy group S0 (4) and dynamical group SO (4, 2). These …


Water Supplies On Wheatbelt Farms : A General Picture, I A F Laing Jan 1977

Water Supplies On Wheatbelt Farms : A General Picture, I A F Laing

Journal of the Department of Agriculture, Western Australia, Series 4

In good rainfall years, farm dams provide water fo more than 50 per cent of the total stock in the wheatbelt.

Other sources include ground water supplies and the piped Comprehensive Water Scheme.

The March 1970 census included questions on farm water supplies including how farmers coped in the 1969-70 drought.


The Comprehensive Water Supply Scheme, K J. Kelsall Jan 1977

The Comprehensive Water Supply Scheme, K J. Kelsall

Journal of the Department of Agriculture, Western Australia, Series 4

The Comprehensive Water Supply Scheme has been a great boon to the agricultural area, and it has received strong support from all political parties. The Scheme has been responsible for increased prosperity of country towns, the decentralisation of industry, and general improvements in the standard of living.

This is a look at the development of the Scheme.


P.W.D. Supplementary Public Water Supply Schemes, J E. Davis Jan 1977

P.W.D. Supplementary Public Water Supply Schemes, J E. Davis

Journal of the Department of Agriculture, Western Australia, Series 4

Shallow wells and soaks with very limited yields were the principal water sources for the early settlers.

Hundreds of such wells were constructed by the Public Works Department in remote areas.

In the early 1930s major development of water supplies from rock catchments was begun in the central wheatbelt.

After the war, larger and more effective earth moving equipment became available. The Public Works Department rehabilitated many old excavated dams as well as constructing new ones.

Roaded catchments were also developed during this post-war period. many farmers took advantage of Public Works Department technical advise and hired a P.W.D. grader …


Farm Dams In The Wheatbelt, I A F Laing Jan 1977

Farm Dams In The Wheatbelt, I A F Laing

Journal of the Department of Agriculture, Western Australia, Series 4

Of the estimated 76 000 farm dams in the wheatbelt, about 8 per cent either leak or are salt affected. The remaining 70 000 dams are capable of holding water for livestock use and can be regarded as sercicable dams.

A great many of the serviceable dams are unreliable water supplies due to the combined effects of lack of runoff from catchments, shallow depth of storage and small size of storage in relation to expected demand from livestock and evaporation loss.


Design Standards For Farm Surface Water Supplies, J L. Frith Jan 1977

Design Standards For Farm Surface Water Supplies, J L. Frith

Journal of the Department of Agriculture, Western Australia, Series 4

Design is usually concerned with getting adequate return from limited recources. Farm dams which dry up represent dam failure. Less seriously, so too do dams which, although not drying out, never fill; they waste a recource.


Economics Of Farm Water Supplies, P P. Eckersley Jan 1977

Economics Of Farm Water Supplies, P P. Eckersley

Journal of the Department of Agriculture, Western Australia, Series 4

The economics of farm water supplies can be studied in two ways. One is to compare the costs of alternative ways of supplying a specified quantity of water to a farm. Another is to calcu;ate how mucha farmer can afford or will pay for a water supply.

I propose to look at these questions from the point of vieew of an eastern wheatbelt farmer, assuming that he must pay the full costs of any water supply provided for his property.


A Logical Approach To Wheatbelt Water Supply, Stanley Thomas Smith Jan 1977

A Logical Approach To Wheatbelt Water Supply, Stanley Thomas Smith

Journal of the Department of Agriculture, Western Australia, Series 4

My particular task in this seminar (paper) has been to enunciate a logical approach to water recource utilisation in the wheatbelt, based on the points made by the speakers.


Cost Of Farm Water Supplies : Conclusions From Surveys, I A F Laing Jan 1977

Cost Of Farm Water Supplies : Conclusions From Surveys, I A F Laing

Journal of the Department of Agriculture, Western Australia, Series 4

The Department of Agriculture, in conjunction with the Farm Water Supply Advisory Committee, has conducted farm wster supply surveys in many districts in the wheatbelt.

The aim of the surveys was to collect data to assess the existing water supplies, the potential for further water supply developments and to compare the relative difficulty of water supply development in different localities.


Native Plants : Water Savers In The Garden, K S. Cole Jan 1977

Native Plants : Water Savers In The Garden, K S. Cole

Journal of the Department of Agriculture, Western Australia, Series 4

The climate of Western Australia may be one of the best in the world for people but it is a difficult one for many of our imported, and common garden plants. as a consequence, some 70 per cent of our summer water usage is for gardens and lawns.

This is not the sort of statistic that we should accept easily or happily.

There is a solution to this problem: a new approach to home gardening is required.

The new garden is based on W. A.'s own colourful native plants, which are adapted to mild winters, hot dey summers and poor …


The European Wasp : A New Threat To W.A, Department Of Agriculture, Western Australia Jan 1977

The European Wasp : A New Threat To W.A, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

The European wasp was detected in Western australia for the first time in January and February 1977 in the metropolitan suburbs of Mosman Park, Cottesloe and Attadale.

So far it has only been found within an area of 8 km radius from Fremantle but the outer boundries of the infestation are still uncertain.

It is Department of agriculture policy to eradicate the European wasp, if possible, and to destroy all nests detected.


Saltland And What To Do About It, C V. Malcolm Jan 1977

Saltland And What To Do About It, C V. Malcolm

Journal of the Department of Agriculture, Western Australia, Series 4

Saltland can be conveniently divided into three main types on the basis of cause. Within each type their is great variation, and the types may merge or overlap.

The three aims of a saltland treatment programme are; reduce the groundwater levels or seepage flows as much as possible,reduce the capillary action which brings salt to the surface, and to revegetate the soils with the most useful plants that can survive.


The Effect Of The Chesapeake Corporation On The Water Quality Of The Upper York River With Respect To Total And Fecal Coliforms And Fecal Streptococci, Martha Rhodes, Howard Kator, Nancy King Jan 1977

The Effect Of The Chesapeake Corporation On The Water Quality Of The Upper York River With Respect To Total And Fecal Coliforms And Fecal Streptococci, Martha Rhodes, Howard Kator, Nancy King

Reports

Levels of total and fecal coliforms and fecal streptococci in the Mattaponi, Pamunkey and York Rivers were monitored for one year in the vicinity of the town of West Point, Virginia. These parameters were also determined for selected process waste waters and effluents from the Chesapeake Corporation, West Point, Virginia.


Spectroscopic Studies Of Hydrophobic Association Of Merocyanine Dyes In Cationic And Anionic Micelles, Sayed Sadiq Shah Jan 1977

Spectroscopic Studies Of Hydrophobic Association Of Merocyanine Dyes In Cationic And Anionic Micelles, Sayed Sadiq Shah

University of the Pacific Theses and Dissertations

Merocyanine dyes exhibit interesting changes in absorption spectra with changes in solvent polarity. For example solutions of 1-methyl-4- (oxocyclohexadienylidene) ethylidene -1,4-dihydropyridine (MOED) are yellow, red, violet, or blue, in water, ethanol, acetone or pyridine respectively.1 More striking effects are observed when aqueous solutions are diluted with various proportions of the organic co-solvents such as pyridine. The color varies across the whole spectrum from golden yellow to blue.These characteristic properties of merocyanine dyes in various organic solvents have been extensively studied and correlations between [see PDF file for formula]max and solvent polarity have been determined. In this work the …


Growth And Uptake Dynamics Of Selenastrum Capricornutum Parameterized By Percent Nitrogen, Ronald F. Malone, Kenneth A. Voos, William J. Grenney Jan 1977

Growth And Uptake Dynamics Of Selenastrum Capricornutum Parameterized By Percent Nitrogen, Ronald F. Malone, Kenneth A. Voos, William J. Grenney

Reports

Batch cultures of


1977 Nova University College Accelerated Program For Police And Corrections Officers, Nova Southeastern University Jan 1977

1977 Nova University College Accelerated Program For Police And Corrections Officers, Nova Southeastern University

Undergraduate Programs Course Catalogs

No abstract provided.


Lupin Cultivar Comparison, G H. Walton Jan 1977

Lupin Cultivar Comparison, G H. Walton

Experimental Summaries - Plant Research

1. Lupin cultivar comparison - L. cosentinii cv. CB49 and L. angustifo1ius cv Marri - 77A20. - L. albus cv Ultra and L. angustifolius cultivars, BRAMLEY R.S. - 77B1(A), 77B1(B). 2. Field pea cultivar comparison - AVONDALE R.S. - 77A22. 3. Lupin and cereal mixtures - 77MO19, 4. Undersowing of subclover pasture - 77NA25. Plant competition in mixtures of lupin and cereal (Lancelin) - 77MO19. Undersowing lupin and wheat crops with sub. clover (Cuballing) - 77NA25. Polycultures of wheat and lupin (Crossman) - 77NA26, 77MO18. Expt no: 76JE7, 77A20, 77A21, 77A22, 77B1(A), 77B1(B), 77GE30, 77MO17, 77MO18, 77MO19, 77NA25, 77NA26, 77TS21.


Test Sites For Farm Dams, Department Of Agriculture, Western Australia Jan 1977

Test Sites For Farm Dams, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

A short article outlining procedures for testing potential dam sites.


The Role Of Sediments In The Storage, Movement And Biological Uptake Of Kepone In Estuarine Environments : Annual Report To The Environmental Protection Agency For The Period 10/20/76 To 10/20/77, Robert Huggett Jan 1977

The Role Of Sediments In The Storage, Movement And Biological Uptake Of Kepone In Estuarine Environments : Annual Report To The Environmental Protection Agency For The Period 10/20/76 To 10/20/77, Robert Huggett

Reports

Included in this document are three sections which describe the efforts of the Virginia Institute of Marine Science's staff on the Role of Sediments in the Storage, Movement,and Biological Uptake of Kepone in Estuarine Environments.

The first section is entitled: "Kepone in James River Sediment," by Maynard M. Nichols and Richard C. Trotman. The second, "Kepone Water-Sediment Elutriates," by Robert J. Huggett and the third, ''Uptake of Kepone From Suspended Sediments by Oysters, Rangia and Macoma," is by Dexter S. Haven and Reinaldo Morales-Alamo.

Also attached is a progress report on the EPA funded James River Hydrographical Survey Study which …


Copper And Zinc In Bottom Sediments And Oysters, Crassostrea Virginica, From Virginia's Estuaries, R. J. Huggett Jan 1977

Copper And Zinc In Bottom Sediments And Oysters, Crassostrea Virginica, From Virginia's Estuaries, R. J. Huggett

Dissertations, Theses, and Masters Projects

No abstract provided.


Effect Of Various Algal Diets And Larval Density In The Larviculture Of The American Oyster, Crassostrea Virginica (Gmelin), Nancy T. Windsor Jan 1977

Effect Of Various Algal Diets And Larval Density In The Larviculture Of The American Oyster, Crassostrea Virginica (Gmelin), Nancy T. Windsor

Dissertations, Theses, and Masters Projects

No abstract provided.


The Effects Of Petroleum On The Salt Marsh Ecosystem, James L. Lake Jan 1977

The Effects Of Petroleum On The Salt Marsh Ecosystem, James L. Lake

Dissertations, Theses, and Masters Projects

No abstract provided.


Effects Of Petroleum Hydrocarbons On Salt Marsh Communities, Carleton H. Hershner Jr. Jan 1977

Effects Of Petroleum Hydrocarbons On Salt Marsh Communities, Carleton H. Hershner Jr.

Dissertations, Theses, and Masters Projects

This dissertation is from the Joint Program Degree from the College of William & Mary and University of Virginia and awarded by the University of Virginia.

The effects of petroleum hydrocarbons on salt marsh grasses and gastropods were examined under three different circumstances. In the first study reported, a small pocket marsh was repeatedly dosed with small amounts of a No. 2 fuel oil. The second study investigated the effects of a large accidental spill of No. 6 fuel oil. The third study involved single doses of a fresh and a weathered crude oil on artificially enclosed segments of marsh.


The Effects Of Conditioning The American Oyster (Crassostrea Virginica) With Tetraselmis Suecica And Cornstarch On The Growth, Vigor And Survival Of Its Larvae, Laura Lee Creekman Jan 1977

The Effects Of Conditioning The American Oyster (Crassostrea Virginica) With Tetraselmis Suecica And Cornstarch On The Growth, Vigor And Survival Of Its Larvae, Laura Lee Creekman

Dissertations, Theses, and Masters Projects

A comparison of effects of conditioning adult oysters (Crassostrea virginica) with Cornstarch and/or Tetraselmis suecica and raw water were determined on subsequent larval growth, vigor and successful metamorphosis. Possible correlations of lipid content of eggs and larval growth, vigor and metamorphosis was also examined. Results illustrated the effectiveness of Cornstarch when used as a supplemental conditioning agent for producing larvae and spat in greater quantity and of better quality than the other conditioning diets employed. Investigation revealed that lipid content of eggs is an important indicator for larval growth, vigor, set and successful metamorphosis. This dissertation is from the Joint …


The Effects Of Pollution On Benthic Communities Of The Tidal James River, Virginia, Robert J. Diaz Jan 1977

The Effects Of Pollution On Benthic Communities Of The Tidal James River, Virginia, Robert J. Diaz

Dissertations, Theses, and Masters Projects

Benthic communities in the estuarine portion of the James River are controlled mainly by salinity. Pollution effects are localized and difficult to assess because of the rigorous physical environment. Mesohaline and oligohaline communities were very similar to those in other east coast estuaries. except for the dominance of Rangia cuneata in the oligohaline zone. Communities of the tidal freshwater zone are most affected by pollution. In the areas of Richmond and Hopewell, where the major portion of the pollution load enters the river, communities are most severely depressed. Separate multivariate analyses of species distributional patterns, and pollution and physical parameters …


The Effects Of Environmental Variables On The Heart Rate Of Invertebrates, Peter L. Defur Jan 1977

The Effects Of Environmental Variables On The Heart Rate Of Invertebrates, Peter L. Defur

Dissertations, Theses, and Masters Projects

No abstract provided.


Dielectric Relaxation In The Uhf And Rf Regions, Theodore Bryant Kingsbury Jan 1977

Dielectric Relaxation In The Uhf And Rf Regions, Theodore Bryant Kingsbury

Dissertations, Theses, and Masters Projects

No abstract provided.