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Articles 2401 - 2429 of 2429
Full-Text Articles in Physical Sciences and Mathematics
1988 File Geodatabase Containing Aerial Photos, Pete Reehling, Richard Mckenzie, City Of Tampa Department Of Sanitary Sewers Bay Study Group
1988 File Geodatabase Containing Aerial Photos, Pete Reehling, Richard Mckenzie, City Of Tampa Department Of Sanitary Sewers Bay Study Group
Images
The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the aerial photos for the year 1988.
1988 File Geodatabase Containing Photo Point Locations, Aerial Photos, And Flight Maps, City Of Tampa Department Of Sanitary Sewers Bay Study Group, Pete Reehling, Richard Mckenzie
1988 File Geodatabase Containing Photo Point Locations, Aerial Photos, And Flight Maps, City Of Tampa Department Of Sanitary Sewers Bay Study Group, Pete Reehling, Richard Mckenzie
Data Sets
The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the photo point locations, aerial photos, and flight maps for the year 1988.
1987 File Geodatabase Containing Photo Point Locations, Aerial Photos, And Flight Maps, City Of Tampa Department Of Sanitary Sewers Bay Study Group, Pete Reehling, Richard Mckenzie
1987 File Geodatabase Containing Photo Point Locations, Aerial Photos, And Flight Maps, City Of Tampa Department Of Sanitary Sewers Bay Study Group, Pete Reehling, Richard Mckenzie
Data Sets
The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the photo point locations, aerial photos, and flight maps for the year 1987.
1987 File Geodatabase Containing Aerial Photos, Pete Reehling, Richard Mckenzie, City Of Tampa Department Of Sanitary Sewers Bay Study Group
1987 File Geodatabase Containing Aerial Photos, Pete Reehling, Richard Mckenzie, City Of Tampa Department Of Sanitary Sewers Bay Study Group
Images
The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the aerial photos for the year 1987.
1986 File Geodatabase Containing Photo Point Locations, Aerial Photos, And Flight Maps, City Of Tampa Department Of Sanitary Sewers Bay Study Group, Pete Reehling, Richard Mckenzie
1986 File Geodatabase Containing Photo Point Locations, Aerial Photos, And Flight Maps, City Of Tampa Department Of Sanitary Sewers Bay Study Group, Pete Reehling, Richard Mckenzie
Data Sets
The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the photo point locations, aerial photos, and flight maps for the year 1986.
1986 File Geodatabase Containing Aerial Photos, Pete Reehling, Richard Mckenzie, City Of Tampa Department Of Sanitary Sewers Bay Study Group
1986 File Geodatabase Containing Aerial Photos, Pete Reehling, Richard Mckenzie, City Of Tampa Department Of Sanitary Sewers Bay Study Group
Images
The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the aerial photos for the year 1986.
Digital Logic Simulator, John W. Scott
Digital Logic Simulator, John W. Scott
Computer Science Technical Reports
Logic is a Macintosh program that simulates discrete, digital logic circuits. The two disks contain an executable version of the program, MacApp sources and brief documentation (which is also available separately in hardcopy).
Havoc V.85 Software, David Cohn, Stephen Madancy
Havoc V.85 Software, David Cohn, Stephen Madancy
Computer Science Technical Reports
This disk contains alpha release 85 of the HAVOC system, with examples. It is written in C and 68000 assembler.
Binary Trees (V. 2.1 -- September 25, 1985), John Glenn
Binary Trees (V. 2.1 -- September 25, 1985), John Glenn
Computer Science Technical Reports
Binary Tree is a program that uses animation to illustrate insertion, deletion and searching of nodes in a binary search tree. Pre-order, in-order, and post-order tree walks are supported. Binary Tree can also perform a recursive descent parse of arithmetic expressions and show the resulting abstract syntax tree. Lisa Pascal source and application available on a single-sided, MFS format microdisk.
Music Editor, Ed Grosz
Music Editor, Ed Grosz
Computer Science Technical Reports
This disk contains a simple music editor that creates resources that can be used directly by the Macintosh Sound Driver. The MFS formatted disk contains both the runnable program and the Lisa Object Pascal/MacApp Sources.
Maze Game For The Macintosh, Mark Sherman
Maze Game For The Macintosh, Mark Sherman
Computer Science Technical Reports
Maze is a multiperson game using a broadcast protocol on the Macintosh. This disk contains the sources (in TML Pascal) for a Maze game.
Macip Sources And Applications, Mark Sherman, Tim Maroney
Macip Sources And Applications, Mark Sherman, Tim Maroney
Computer Science Technical Reports
The MacIP set consists of three disks, all single-sided, MFS formatted. Two disks contain the Lisa Pascal/Lisa Assembler sources for the network libraries and application programs; the third disk contains the runnable applications along with an AppleTalk configured system. The current version by Tim Maroney fixes all reported bugs mentioned in the MacIP Technical Report and includes the TCP library and Telnet program.
Stack Package Implementing Tasks And Coroutines For Tml Pascal On The Macintosh, Mark Sherman
Stack Package Implementing Tasks And Coroutines For Tml Pascal On The Macintosh, Mark Sherman
Computer Science Technical Reports
This disk contains the necessary TML Pascal and MDS Assembler files for implementing tasking and coroutines in TML Pascal Programs. Two example programs and brief documentation are provided. MDS format disk.
Qdt (Quickdraw Terminal) Disks, Mark Sherman
Qdt (Quickdraw Terminal) Disks, Mark Sherman
Computer Science Technical Reports
This disk set consists of one disk containing a running version of QDT over a serial line, one disk containing a running version of QDT over Apple Talk (using KSP), and one disk containing the Lisa Pascal sources for creating QDT (either version).
A Collection Of Mds Example Programs, Joe Bergin, Robert L. Scot Drysdale, Jerry Keough, Larry Gallagher, Vivian Sewelson, Mark Sherman
A Collection Of Mds Example Programs, Joe Bergin, Robert L. Scot Drysdale, Jerry Keough, Larry Gallagher, Vivian Sewelson, Mark Sherman
Computer Science Technical Reports
This MFS formatted disk contains a collection of example programs written for teaching machine architecture concepts using the Macintosh Development System. Sample programs illustrate how instructions can be treated as data, computer arithmetic, looping features, interrupt handling, coroutines, recursive subprograms and stack frames, traps and direct manipulation of the screen. In addition, a supervisor program is provided that implements basic, line-oriented input and output facilities for the 68000 assembly language programs on the Macintosh.
Successional Trends In An Ungrazed, Arid Grassland Over A Decade, Edgar F. Kleiner
Successional Trends In An Ungrazed, Arid Grassland Over A Decade, Edgar F. Kleiner
Canyonlands Research Bibliography
A study has been made of the vegetational condition of a formerly grazed area, Chesler Park, in Canyonlands National Park. A comparison was made with the same area 10 years earlier. The 10-year successional changes are also compared to baseline data of 10 years earlier from Virginia Park, an adjacent ungrazed area. Because of inaccessibility and long isolation from disturbances, Virginia Park is presumed to be in climax condition and is the control for this study. Chesler Park shows a successional trend after 10 years toward the vegetational condition of Virginia Park. This is exemplified, with only one major exception …
Eleven Year Vegetational Comparison In An Arid Grassland, Edgar F. Kleiner
Eleven Year Vegetational Comparison In An Arid Grassland, Edgar F. Kleiner
Canyonlands Research Bibliography
A study has been made of the vegetational condition of two graben valleys in Canyonlands National Park. The sites, formerly subjected to relatively heavy grazing pressure, were originally investigated in 1970 and analyzed again in 1981, providing an eleven-year record of succession. Comparisons are made to successional trends noted in related studies of disturbed and pristine areas. The graben valleys, with few exceptions, show a successional trend over eleven years toward the climax vegetational condition of an area that has never been disturbed.
Factors Influencing Development Of Cryptogamic Soil Crusts In Utah Deserts, David C. Anderson, Kimball T. Harper, Ralph C. Holmgren
Factors Influencing Development Of Cryptogamic Soil Crusts In Utah Deserts, David C. Anderson, Kimball T. Harper, Ralph C. Holmgren
Canyonlands Research Bibliography
The relation of some physical and chemical soil characteristics to cryptogamic crust development was determined from sites in semidesert regions of southern Utah. The effects of grazing on cryptogamic crust development also was examined. Electrical conductivity, percentage silt, and soil phosphorus were found to be correlated with well-developed cryptogamic crusts. Both total cryptogamic cover and the number of cryptogamic species decreased under grazing pressure. The management of rangelands, especially in arid regions, would be strengthened by understanding the role of cryptogamic crusts and considering them in range management decisions.
Influence Of The Termite Macrotermes Michaelseni (Sjöst) On Soil Fertility And Vegetation In A Semi-Arid Savannah Ecosystem, M. A. Arshad
Influence Of The Termite Macrotermes Michaelseni (Sjöst) On Soil Fertility And Vegetation In A Semi-Arid Savannah Ecosystem, M. A. Arshad
All Peer-Reviewed Publications
The growth and species structure of vegetation in relation to the proximity of termite (M. michaelseni) mounds was studied in a semi-arid savannah ecosystem during 1978-1980. The dry matter yield in the termite-modified area at 1-10 m distance from mounds was significantly greater (P < 0.01) than that in the area beyond 22 m which is relatively unaffected by the termites. Themeda triandra and Digitaria scalarum, dominant grass species of the area, were totally absent in the 1-10 m zone around the mound. The major species in the immediate vicinity of the mound were Pennisetum stramineum and Cynodon dactylon, the latter was a dominant species (over 90%) within the 0-10 m zone and entirely absent beyond 15 m from the mound. The number of grass species increased from 2-3 species around the mound to 6-7 species in the area apparently beyond the influence of the mound. High concentration of nutrients and favourable water availability, together with good drainage, appeared to be the major causes of increased biomass and different species composition of vegetation around the mound. © 1982.
Furanosesquiterpenoids Of Commiphora Erythraea And C. Myrrh, Asafu Maradufu
Furanosesquiterpenoids Of Commiphora Erythraea And C. Myrrh, Asafu Maradufu
All Peer-Reviewed Publications
The isolation and structure determination of two new furanosesquiterpenoids, 2-O-acetyl-8,12-epoxygermacra-1(10),4,7,11-tetraene and 2-O-methyl-8,12-epoxygermacra-1(10)-4,7,11-tetraene, from gum exudates of Commiphora myrrh are reported. These two compounds, together with the known furanodienone isolated from C. erythraea, were found to have ixodicidal activity against Rhipicephalus appendiculatus tick larvae. © 1982.
The Influence Of Salinity On Larval Development And Population Dynamics Of Anopheles Merus Dönitz (Diptera: Culicidae), F. W. Mosha, C. M. Mutero
The Influence Of Salinity On Larval Development And Population Dynamics Of Anopheles Merus Dönitz (Diptera: Culicidae), F. W. Mosha, C. M. Mutero
All Peer-Reviewed Publications
Variations in density of adults of Anopheles merus Dön. in Jimbo Village on the Kenya Coast were found to be correlated both with rainfall and with salinity at their breeding sites. Densities started to increase at the beginning of the rains when several breeding sites were formed. This was followed by a decline in numbers resulting mainly from the decrease in salinity in the semi-permanent breeding sites. A second rise occurred after the end of the rains, corresponding with an increase in salinity in the semi-permanent breeding sites due to evaporation. Peak density coincided with salinities of 30–50% sea water …
Instars And Polymorphism Of Castes In Macrotermes Michaelseni (Isoptera, Macrotermitinae), B. M. Okot-Kotber
Instars And Polymorphism Of Castes In Macrotermes Michaelseni (Isoptera, Macrotermitinae), B. M. Okot-Kotber
All Peer-Reviewed Publications
Biometric studies and physiological investigations made it possible to propose a scheme of post-embryonic development and polymorphism in Macrotermes michaelseni. An instar hitherto undescribed has been found and designated fourth instar. This instar is comprised of female larvae which moult into major presoldiers. Minor presoldiers moult from some of the third instar female larvae which are morphologically identical to the female worker larvae. Three instars were detected in the case of both minor and major worker development. Workers and soldiers are sterile castes. Nymphs develop from first instar larvae and moult through five instars before imaginal moult. © 1981 Masson.
Occurrence Of Four Major Perennial Grasses In Relation To Edaphic Factors In A Pristine Community, Edgar F. Kleiner, K. T. Harper
Occurrence Of Four Major Perennial Grasses In Relation To Edaphic Factors In A Pristine Community, Edgar F. Kleiner, K. T. Harper
Canyonlands Research Bibliography
The ecology and phytosociology of a virgin grassland community (Virginia Park, Canyonlands National Park, Utah) have been investigated. Based on the use of C √ó F index, Hilaria jamesii and Stipa comata are the most abundant of the four major perennial grasses. Oryzopsis hymenoides and Sporobolus cryptandrus are less abundant in decreasing order. The sites dominated by Hilaria are characterized by soils with finer texture, slightly warmer average temperature and higher surface K+ and organic matter compared to sites dominated by Stipa comata. In addition, frequency of both vascular and cryptogamic species is greater on sites dominated by Hilaria.
Soil Properties In Relation To Cryptogamic Groundcover In Canyonlands National Park, Edgar F. Kleiner, K. T. Harper
Soil Properties In Relation To Cryptogamic Groundcover In Canyonlands National Park, Edgar F. Kleiner, K. T. Harper
Canyonlands Research Bibliography
A comparative study was made of the soils of a virgin grassland and an adjacent grazed area in Canyonlands National Park. Soils from the virgin site were finer textured than those of the grazed area, and the surface 5 cm contains a significantly lower amount of calcium. In addition, the surface 5 cm of the virgin site contains significantly greater amounts of phosphorus, potassium, and organic matter. Subsurface soils in the two parks are less dissimilar. Cryptogams on the virgin grassland appear to have an important influence on chemical characteristics of the surface 5 cm of soil. The difference in …
The Colorado Plateau, Robert Durrenberger
The Colorado Plateau, Robert Durrenberger
Canyonlands Research Bibliography
The Colorado Plateau was one of the last areas in the United States to be developed economically. Before the 1880s it was virtually empty except for Indians. Today the vast scenic and energy resources of the area are under development, and projections for future development are frightening. Problems of land use management are directly related to the fragmented nature of landholdings. Present methods of consolidation are inadequate, and new approaches to the organization of space must be devised if further degradation of the environment is to be prevented.
Environment And Communiy Organization In Grasslands Of Canyonlands National Park, Edgar F. Kleiner, K. T. Harper
Environment And Communiy Organization In Grasslands Of Canyonlands National Park, Edgar F. Kleiner, K. T. Harper
Canyonlands Research Bibliography
Sixty uniformly distributed stands in adjacent areas, 40 in Virginia Park (virgin) and 20 in Chesler Park (grazed), were analyzed. Cryptogamic and vascular species were recorded; cover was analyzed by the point sampling method, and frequency by means of 25 quadrats (each 0.125 m^2) per stand. The prevalent species (26 in Virginia, 23 in Chesler) were selected on the basis of a constancy-times-frequency index. Interspecific association patterns were determined by means of simple procedures based on quadrat frequency values for each species in the individual stands. Major environmental variables were recorded at each stand, and soil samples from four depths …
Erratum: Autoradiographic Distribution Of Radioactive Sodium In Rat Kidney
Erratum: Autoradiographic Distribution Of Radioactive Sodium In Rat Kidney
Canyonlands Research Bibliography
No abstract provided.
Test 366: John Deere B, Nebraska Tractor Test Lab
Test 366: John Deere B, Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF TEST REPORT: John Deere B
TEST A: The manufacturer's representative operates the tractor for a minimum of 12 hours using light to heavy drawbar loads in each gear.
This serves as a period for limber up, general observation and adjustments. Adjustments that are permissible include valve tappet clearance, breaker ,point gap, spark plug gaps, clutch and others of a similar nature. No new parts or accessories can be installed without having mention made of it in the report. No data' are recorded during this preliminary run except the time that the engine is operated.
BELT HORSEPOWER TESTS
TEST …
A Working Plan For The Woodlands Of The New Haven Water Company; Prepared After Five Years Of Forest Practice, 1908 To 1912, Ralph C. Hawley
A Working Plan For The Woodlands Of The New Haven Water Company; Prepared After Five Years Of Forest Practice, 1908 To 1912, Ralph C. Hawley
Yale School of the Environment Bulletin Series
Soon after the establishment of the Yale Forest School in 1900, the necessity developed for finding forest lands near the city of NewHaven upon which to conduct field work. It was found that many of the most accessible and best timbered tracts were owned by the New Haven Water Company....about 250 acres near the Maltby Lakes were placed under the management of the Yale Forest School. ...a written plan is desirable. The plan is divided into two parts: the first, descriptive of present conditions and passt accomplishments; the second, treating of the policy to be pursued.