Global ETD Search

1	A Study of Plankton Dilution in Source Streams Compared with that of Lake Dallas Proper Evans, Archibald A. 08 1900 (has links) This study was a comparative study of Plankton of Lake Dallas and the three main source streams. Based on the analysis of data, which was presented relative to the organisms taken from the lake and from the source streams, the results obtained are discussed, the Plankton seem to be largely autogenetic in Lake Dallas, the source streams Elm Fork and Clear Creek form a dilution process. Plankton Physiography Morphometry Lake Dallas
2	A Study of the Phytoplankton Population of Lake Dallas Bagwell, Russell L. 06 1900 (has links) The limnological investigation of any body of water is undertaken in order to secure more accurate information concerning the factors which play an important role in fish production or sanitation. This study shows the qualitative and quantitative planktonic algae in Lake Dallas, for the year 1937-38. planktonic algae fish production Lake Dallas, Texas
3	Comparison in Achievement of Pupils Participating and Not-Participating in a School Lunch Program Robinson, Ollie Scott January 1951 (has links) The purpose of this study is to make an investigation of the achievement records and personality status of a matched group of pupils in the Lake Dallas elementary school to determine what effect, if any, participation or non-participation in the school's hot lunch program has on grade progress and disposition of the pupils. Attention is given to individual studies of pupils and to outcomes of instruction. achievement pupils school lunch program
4	A Comparative Study of the Bottom Fauna of four Texas Lakes Lamb, Leonard D. 08 1900 (has links) This thesis attempted to study the bottom productivity both qualitatively and quantitatively with reference to the distribution of bonthos. The study of the bottom fauna in large reservior lakes is a relatively new field. This work will give more information on an unknown field than previously existed, although its scope is not intend to be exhaustive. fauna Lake Bridgeport Lake Dallas Lake Worth Eagle Mountain Lake
5	Did the Construction of Lake Dallas Benefit or Injure Denton County from the Tax Valuation Standpoint Millar, Abram A. January 1948 (has links) The purpose of this investigation is to determine whether or not Denton County gained or lost from the construction of Lake Dallas from the tax valuation standpoint. property tax Lake Dallas tax valuation Lake Dallas (Tex.) Garza-Little Elm Reservoir (Tex.)
6	A Chemical, Physical and Biological Investigation of the Total Suspended and Dissolved Substances in Lake Dallas with Emphasis on Sanitation Eads, Ewin A. 06 1900 (has links) The purpose of this investigation is to determine the suspended organic matter and the total phosphorus in the waters of Lake Dallas and to evaluate these findings. Since organic matter floating in lakes is largely comprised of minute plants, animals, and detritus derived from animals and plants, the fertilizing effect of phosphorus must be considered as an integral part of this problem. Lake Dallas, Texas chemistry water quality sanitation lake studies
7	A Chemical Investigation of Lake Dallas to Determine the Factors Influencing Plankton Growth. Welch, Herschel 08 1900 (has links) A study to determine the organic content of Lake Dallas, and study the influence on plankton growth. Lake Dallas (Tex.) plankton organic reservoirs
8	A Bio-Chemical Comparative Study of the Plankton in Lake Dallas and Pecan Creek Brooks, Benjy Frances January 1940 (has links) The purpose of this investigation is to compare the dissolved and suspended organic material in Lake Dallas to that coming into the lake through Pecan Creek. biology chemistry Lake Dallas Pecan Creek Plankton -- Texas -- Pecan Creek. Water quality -- Texas -- Pecan Creek.
9	Distribution, Abundance, and Food Habits of Larval Fish in a Cooling Reservoir Mitterer, Lana Gayle 12 1900 (has links) Analysis of larval fish collected at four stations in a 330-ha cooling reservoir indicated Dorosoma spp. were most numerous at all stations, followed by Lepomis spp. and Percina Macrolepida. Largest numbers and greatest diversity of larval fish were found at the station least affected by thermal effluent; the mid-lake station provided the smallest numbers and least diversity. The two warmwater stations were intermediate, with similar numbers and diversity. Diversity and abundance of zooplankton between stations were similar to those of fish. The most abundant zooplankter (Bosmina) was generally selected against by Dorosoma, Lepomis and Micropterus spp. larvae except when the larvae were quite small ((10mm). Cyclopoid copepods were most often selected by all larvae. larval fish heated effluents cooling reservoir food habits of larval fish North Lake (Dallas, Texas) Fishes -- Larvae.
10	A Study of the Shopping Goods Trade Flow from Lewisville, Lake Dallas, Sanger, and Valley View, Texas Robinson, David Charles 08 1900 (has links) "The purpose of the study is to determine the trading centers that receive significant amounts of shopping goods trade flow from the communities surveyed. The position that the Denton trading center holds as a source of shopping goods for households in these communities is compared with the postions held by some competing trading centers. This study is made in cooperation with the Denton Chamber of Commerce for the benefit of the merchants of Denton. It is based on a survey made in December 1953, by the Business Administration 470 (Marketing Research) class of North Texas State College."-- leaves 1, 58. shopping goods trade flow trading centers retail trade area breaking point household Retail trade -- Texas -- Lewisville. Retail trade -- Texas -- Lake Dallas. Retail trade -- Texas -- Sanger. Retail trade -- Texas. Texas -- Commerce. Denton County (Tex.) -- History.

Search results