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Articles 49021 - 49050 of 52526
Full-Text Articles in Entire DC Network
Acceleration Of Nutrient Uptake By Phytoplankton In A Coastal Upwelling Ecosystem: A Modeling Analysis, Richard C. Zimmerman, James N. Kremer, Richard C. Dugdale
Acceleration Of Nutrient Uptake By Phytoplankton In A Coastal Upwelling Ecosystem: A Modeling Analysis, Richard C. Zimmerman, James N. Kremer, Richard C. Dugdale
OES Faculty Publications
Studies of upwelling centers in the eastern Pacific suggest that maximum rates of nitrate uptake (light and nutrient saturated) increase, or shift-up, as newly upwelled water moves downstream. The rate of shift-up appears to be related to irradiance and the ambient concentration of limiting nutrient at the time of upwelling. A mathematical model was developed to evaluate effects of irradiance and initial nitrate concentration on temporal patterns of shift-up and subsequent time scales of nutrient utilization over a range of simulated upwelling conditions. When rates consistent with field studies were used, complete shift-up was possible only under certain conditions, and …
High Pressure Liquid Chromatography Ion Exchange Studies On Bile Relating To The Postmortem Interval, Bertha Louise Martin
High Pressure Liquid Chromatography Ion Exchange Studies On Bile Relating To The Postmortem Interval, Bertha Louise Martin
University of the Pacific Theses and Dissertations
It is the purpose of this, then, to investigate the feasibility of using the changes of concentrations of small iconic decomposition products in bile as indicators of time since death. High pressure liquid chromatography was selected for measurement of these changes.
A Reappraisal Of Tylenchina (Nemata) 1. For A New Approach To The Taxonomy Of Tylenchina, Michel Luc, Armand R. Maggenti, Renaud Fortuner, Dewey J. Raski, Etienne Geraert
A Reappraisal Of Tylenchina (Nemata) 1. For A New Approach To The Taxonomy Of Tylenchina, Michel Luc, Armand R. Maggenti, Renaud Fortuner, Dewey J. Raski, Etienne Geraert
Harold W. Manter Laboratory of Parasitology: Faculty Publications
During the last three decades plant-parasitic nematodes have received increasing attention. This was due mainly to the discovery during the years between 1943-1953 of the first efficient nematicides, DD, EDE and DBCP. This discovery gave a strong impetus to established nematology laboratories and led to the establishment of laboratories in previously "virgin," or nearly so, territories. As a result, there was an increase in the number of nematologists and taxonomic activity. This is particularly true in those areas new to nematology, because the soil fauna is virtually unknown and taxonomy is one of the few activities fitting with limited material …
The Economics Of Saltland Agronomy, John S. Salerian, Clive Malcolm, Eddie Pol
The Economics Of Saltland Agronomy, John S. Salerian, Clive Malcolm, Eddie Pol
Resource management technical reports
No abstract provided.
Wheat And Barley Experiments On The Kumarl Soils At Salmon Gums, D A. Collins, Michael D A Bolland, R D. Fletcher
Wheat And Barley Experiments On The Kumarl Soils At Salmon Gums, D A. Collins, Michael D A Bolland, R D. Fletcher
Technical Bulletins
The water-holding capacity of these soils, and their location in a low rainfall area combine to make them marginal for producing grain. In contrast to sowing wheat on ley pasture, mechanically fallowing the year before planting markedly improved grain yields by 1.3 to 4 times.
Analysis Of Primate Dental Microwear Using Image Processing Techniques, Richard F. Kay
Analysis Of Primate Dental Microwear Using Image Processing Techniques, Richard F. Kay
Scanning Microscopy
This paper introduces Fourier transformation as a rapid, replicable means for characterizing and distinguishing patterns of microscopic wear on primate teeth. The two-dimensional power spectra obtained from numerical Fourier transformation are shown to be different between two test patterns, one of which is composed of linear features and the other of randomly-spaced dots. A comparison is made, using Fourier transformation, of dental microwear patterns of small samples of two primate species, Ateles geoffroyi, the spider monkey, and Chiropotes satanas, the bearded saki. Ateles, with a scratch-dominated pattern of microwear, has a Fourier transform resembling that of the …
Fisheries Report No 74 - Marine Resources Map Of Western Australia- Part 2 - The Influence Of Oil On Marine Resources And Associated Activities With An Emphasis On Those Found In Western Australia, H. E. Jones
Fisheries Research Reports
Part 1 of the text accompanying the marine resources maps dealt with the resources and the morphological, hydrological and meteorological characteristics of the Western Australian coastal environment. This subsidiary part is concerned with the effects of oil on marine resources and associated commercial and recreational activities.
Accounts of oil on the seas due to natural seepages appeared in Europe in the sixteenth century on the return of Spanish and Portuguese ships from voyages to the Americas. One of the earliest reports of oil pollution from a man-made source was in 1754 when leakages from wooden petroleum barges were prevalent in …
Land Use In The Amazon: Soil Erosion, Sedimentation, And The Samuel Dam, Doug H. Graham
Land Use In The Amazon: Soil Erosion, Sedimentation, And The Samuel Dam, Doug H. Graham
Peer Reviewed Articles
Doug Graham received a M.A. in Geography in December of 1986. This paper is a summary of his thesis entitled "The Samuel Dam: Land Use, Soil Erosion, and Sedimentation in Amazonia." Graham conducted field research in Brazil during the Summer of 1985, with funding from the Tinker Foundation and the Amazon Research and Training Program. His immediate plans are to continue his training in Geography at the University of Wisconsin-Madison.
Some Statistical Analyses Of The Climate Of Nacogdoches, Texas For Applications In Natural Resources Management, Alexander Sayok
Some Statistical Analyses Of The Climate Of Nacogdoches, Texas For Applications In Natural Resources Management, Alexander Sayok
Electronic Theses and Dissertations
Analyses of a variety of climatic variables generated from 80 years (1901-80) of daily precipitation and temperature data collected by the National Weather Service showed that Nacogdoches is characterized by a humid subtropical climate with an average annual precipitation and temperature of 45.96 inches and 65.5°F, respectively. The summer is warm and dry with mean maximum temperature of 91.6°F while winter is mild with mean minimum temperature of 38°F. There were no statistical differences between mean annual temperature and precipitation on the 1951-80 and 1901-80 periods or between any 2 normal periods. Rain days occurred once in every 4 days …
The Homeo Domain Of A Murine Protein Binds 5' To Its Own Homeo Box., Abraham Fainsod, Leonard D. Bogarad, Tarmo Ruusala, Martin Lubin
The Homeo Domain Of A Murine Protein Binds 5' To Its Own Homeo Box., Abraham Fainsod, Leonard D. Bogarad, Tarmo Ruusala, Martin Lubin
Dartmouth Scholarship
Nuclear protein extracts from day 12.5 mouse embryos were used to study protein binding to DNA sequences 5' of the Hox 1.5 homeo box. Embryos of this developmental stage are known to express this gene. DNA binding protein blotting and retardation gel techniques show that murine embryonic nuclear proteins specifically bind a 753-base pair (bp) DNA fragment from the region upstream of the Hox 1.5 homeo box. A fusion protein containing the Hox 1.5 homeo domain constructed in lambda gt11 also binds the same 753-bp DNA fragment. Specific binding of the fusion protein to the upstream DNA fragment shows that …
Late Pleistocene Sciurids From Kokoweef Cave, H. Thomas Goodwin
Late Pleistocene Sciurids From Kokoweef Cave, H. Thomas Goodwin
Loma Linda University Electronic Theses, Dissertations & Projects
Three local (Tamias panamintinus, Ammospermophilus leucurus and Spermophilus variegatus) and five extralocal (Tamias minimus, Tamias palmeri, Marmota flaviventris, Spermophilus townsendii, and Spermophilus lateralis) sciurid species (Sciuridae) were identified from the late Pleistocene-early Holocene Kokoweef Cave paleofauna. This fauna was the first documentation of T. minimus, T. palmeri and S. townsendii from the Pleistocene of the Mohave Desert. The 30-ft sedimentary sequence apparently recorded the mid-to late-Wisconsian introduction of S. lateralis into the Kokweef fauna but otherwise documented general taxonomic stability. The ecological diversity of the fauna was consistent with--but did not require--the hypothesis of more equable late Pleistocene climates, and …
Fetal Whole-Body Fluid, Cardiovascular And Endocrine Dynamics : Computer Analysis Of Regulatory Mechanisms, Peter Stuart Gold
Fetal Whole-Body Fluid, Cardiovascular And Endocrine Dynamics : Computer Analysis Of Regulatory Mechanisms, Peter Stuart Gold
Loma Linda University Electronic Theses, Dissertations & Projects
The dynamics of transcapillary fluid and protein distribution and endocrine regulation of cardiovascular function were studied in chronically instrumented fetal sheep during the third trimester. Average experimental changes in vascular pressures, blood volume, plasma hormone concentrations, hematocrit and plasma protein concentration were analyzed using mathematical modeling and parameter optimization techniques in order to determine values for the major parameters which regulate fluid, protein and endocrine dynamics and to determine endocrine dose-response relationships to changes in cardiovascular function. The hormones which were considered are arginine vasopressin (AVP), angiotensin II (AII), epinephrine (EPI) and norepinephrine (NE). Vascular disturbances which were considered include …
Phytoplankton Production In The Delaware Estuary: Temporal And Spatial Variation., Jonathan Pennock
Phytoplankton Production In The Delaware Estuary: Temporal And Spatial Variation., Jonathan Pennock
School of Marine Science and Ocean Engineering
ABSTRACT:
Phytoplankton production in the Delaware Estuary (USA) was measured over several seasonal cycles (1980-1985). Seasonal variability in daily area1 production (JP; g C m-2 d-l) was dlrectly related to chlorophyll concentrations in the upper estuary, ranging from a maximum of 1.1 g C m-' d-' In summer to a minlmum of d-l) dunng summer in the presence of low phytoplankton biomass (2 to 10 kg Chl I-'), and in mid-estuary [2.6 g C d-l) during the spring diatom bloom (50 to 60 yg Chll-l). Desplte the occurrence of maximum nutnent concentrations in the freshwater region, highest JP and 90 …
Donald Bailey Oral History, Donald Bailey
Donald Bailey Oral History, Donald Bailey
Oral History Collection
Susan Metrhens' Note:
Regarded by many of his peers at Jax as one of the most intuitive, prescient and creative scientists at the Lab, Bailey was a very reflective narrator. While he provides one anecdote of c.c. Little1s sartorial habits, this tape is largely devoid of anecdotal material, and is more a reminiscence by a scientist who was at Jax in the early '50's, who left and returned in 1967. I tried, through a variety of questions, to probe the synergy between Bailey and the Lab, the degree to which his prescience and creativity might be due to the freedom …
Nature And Properties Of Cardiovascular Deposits, B. B. Tomazic, E. S. Etz, W. E. Brown
Nature And Properties Of Cardiovascular Deposits, B. B. Tomazic, E. S. Etz, W. E. Brown
Scanning Microscopy
Mineral deposits from human aortas and bioprosthetic devices implanted in experimental animals show close similarities in chemical composition, solubility and structural characteristics. Chemical analyses show compositions corresponding to a Na, Mg, CO3 substituted apatitic calcium phosphate. Synergistic XRO, FT-IR and Raman Mi crop robe spectroscopic data provided coherent indication of Type-B CO32- incorporation. Microscopic and electron microprobe microanalyses, however, indicate substantial morphological and spatial heterogeneity in the deposits.
Solubility and kinetic dissolution data of the mineral fraction of deposits can be compared with the corresponding data of octacalcium phosphate (OCP). This may indicate that OCP is a …
Priscilla "Skippy" Lane Oral History, Skippy Lane
Priscilla "Skippy" Lane Oral History, Skippy Lane
Oral History Collection
Susan Mehrtens' Note:
We have in this tape the recollections of one of the most prolific authors in the field of mouse mutants, an indefatigable co-worker of Margaret Dickey, Margaret Green and currently, Muriel Davison. Full of scientific terms, this tape reveals clearly Lane's thorough absorption in the field to which she has devoted nearly the last forty years of her life. Toward the end of this tape, Lane alludes to Earl Green's sexist attitude, which other women have also mentioned to me on and off tape. Lane also waxes eloquently here about her efforts to establish a hiera'rchy within …
Management Measures For The Shark Bay Snapper Fishery 1987 Season., P. Millington
Management Measures For The Shark Bay Snapper Fishery 1987 Season., P. Millington
Fisheries Management Papers
The 1986 Shark Bay snapper fishing season mirrored in almost all respects the situation which will apply when the limited entry regime is put into effect. It was thus an opportunity to assess how effective the measures recommended in the Report of the Shark Bay Snapper Fishery Working Group were in reducing effort in the fishery.
The Esperance Rock Lobster Working Group Interim Report By The Chairman Mr. A. Pallot To The Western Australia Fishing Industry., A. Pallot
Fisheries Management Papers
In July 1985 the Minister for Fisheries released a discussion paper titled "Arrangements for entry to all fisheries off and along the Western Australian coast" for consideration by all members of the fishing industry. The Australian Fishing Industry Council (W.A. Branch), now the Western Australian Fishing Industry Council (Inc), responded to the discussion paper in March 1986. The following were included in the Council's recommendations: 1. The rock lobster fishery near Esperance be a limited entry fishery. 2. The bench mark date for determining access by April 30, 1985. 3. that the Minister for fisheries establish a representative Government/Industry Working …
Surveying Battery Cell Sections To Determine The Composition And Spatial Distribution Of Discharge Products Using An Automated Microprobe, B. M. England, M. T. Frost, I. R. Harrowfield, C. M. Macrae, D. A. J. Swinkels, K. E. Turner, C. B. Ward
Surveying Battery Cell Sections To Determine The Composition And Spatial Distribution Of Discharge Products Using An Automated Microprobe, B. M. England, M. T. Frost, I. R. Harrowfield, C. M. Macrae, D. A. J. Swinkels, K. E. Turner, C. B. Ward
Scanning Electron Microscopy
Determining the spatial distribution and composition of hydrohetaerolite in polished sections of discharged Leclanché cells requires the measurement of oxygen concentrations on microcrystalline material. This can be done if the composition of the mounting medium is included in the matrix correction of raw intensities. The method of Pouchou and Pichoir (PAP) is used initially to correct raw intensities obtained from surveys of microcrystalline standard material. Mean analyses agree well with the known compositions provided a correction is made for the oxygen content of the mounting medium. The same correction is then applied to the raw data collected when surveying cell …
Santa Clara Magazine, Volume 29 Number 1, Fall 1986, Santa Clara University
Santa Clara Magazine, Volume 29 Number 1, Fall 1986, Santa Clara University
Santa Clara Magazine
10 - IS SANTA CLARA STILL JESUIT? Declining vocations prompt this recurring question. Some of the faculty discuss what makes Santa Clara Jesuit to them. By Peg Major
16 - DON'T CALL ME MR. MOM Taking over the day care of his two tiny daughters while his wife worked provided this alumnus new insight on fatherhood. By Jim Craven
21 - PERSPECTIVES OF A PATRIARCH The spotlight is on Tom Bannan, class of '23, who started the procession of Bannans to Santa Clara. BY Paul Hennessy
26 - HOW NOT TO MAKE MONEY ON THE STOCK MARKET A guide to …
The Report Of The Fish Farming Legislative Review Committee., P. Rogers
The Report Of The Fish Farming Legislative Review Committee., P. Rogers
Fisheries Management Papers
In 1975, amendments to the Fisheries Act provided for the licensing and control of commercial fish farming activities and , for specific declared species, further controls on their processing and marketing. To date, marron has been the only species to be declared a "farm fish". During the last decade, much of the State's aquaculture impetus has focused on marron although more recently greater attention has been directed towards trout, yabbies and freshwater aquarium fish species. On November 19, 1984, the Marron Growers Association of Western Australia (Inc) wrote to the Minister for Fisheries and Wildlife, seeding a general review of …
Paul Alan Cox And Joel C. Janetski's Review Of Patrick Vinton Kirch's The Evolution Of The Polynesian Chiefdoms, Paul Alan Cox, Joel C. Janetski
Paul Alan Cox And Joel C. Janetski's Review Of Patrick Vinton Kirch's The Evolution Of The Polynesian Chiefdoms, Paul Alan Cox, Joel C. Janetski
Pacific Studies
No abstract provided.
Chemical, Physical And Mineralogical Properties Of Mitchell And Tripp Soils In The Nebraska Panhandle, G. A. Uzochukwu, D. T. Lewis
Chemical, Physical And Mineralogical Properties Of Mitchell And Tripp Soils In The Nebraska Panhandle, G. A. Uzochukwu, D. T. Lewis
Nebraska Agricultural Experiment Station: Historical Research Bulletins
Mitchell and Tripp soils are some of the most important agricultural soils in the Nebraska Panhandle. Yet, they have received little attention in terms of their basic chemical, physical, and mineral properties. Management decisions can be made on a more informed basis if this kind of information is available. This study was to acquire the information, with special emphasis on mineralogical properties of the soils and their parent materials. This emphasis was given because it is known that other soils in the region contain volcanic ash in measurable amounts. The presence of volcanic ash in soils has been associated with …
Louisiana Agriculture Magazine, Fall 1986, Lsu Agricultural Experiment Station
Louisiana Agriculture Magazine, Fall 1986, Lsu Agricultural Experiment Station
Louisiana Agriculture
No abstract provided.
The Synthesis And Evaluation Of The Cardiovascular Activity Of Novel Imidazole Ring Systems, Joseph E. De Los Angeles
The Synthesis And Evaluation Of The Cardiovascular Activity Of Novel Imidazole Ring Systems, Joseph E. De Los Angeles
Chemistry & Biochemistry Theses & Dissertations
An investigation was undertaken to synthesize and evaluate the cardiovascular activity of two imidazole ring systems. Imidazoles with hypotensive activity would provide novel potential antihypertensive drugs. These novel structures may also find use as chemical probes in the study of the cardiovascular system and as prototypes for other potential cardiovascular agents.
The histamine derivative, 7,7-dipyridyl-4,5,6,7-tetrahydroimidazo-[4,5-c]pyridine (ligand l), was demonstrated to possess significant hypotensive activity in laboratory rats. A 15 mg/Kg dose of ligand 1 produces a statistically significant decrease in blood pressure when injected IP. This hypotensive effect is also associated with marked increase in heart rate. Although compound 1 …
Sequence Alignment With Matched Sections, Jerrold R. Griggs, Philip J. Hanlon, Michael S. Waterman
Sequence Alignment With Matched Sections, Jerrold R. Griggs, Philip J. Hanlon, Michael S. Waterman
Faculty Publications
In molecular biology, two finite sequences are compared by displaying one sequence written over another in an alignment. The number of alignments of two sequences is related to the Stanton-Cowan numbers. This paper gives asymptotics for the number of alignments of two sequences of length n with matching sections of size at least b.
The National Park System And Development On Private Lands: Opportunities And Tools To Protect Park Resources, Michael Mantell
The National Park System And Development On Private Lands: Opportunities And Tools To Protect Park Resources, Michael Mantell
External Development Affecting the National Parks: Preserving "The Best Idea We Ever Had" (September 14-16)
34 pages.
Contains footnotes.
Jurisdictional And Institutional Issues: Public Lands, Robert B. Keiter
Jurisdictional And Institutional Issues: Public Lands, Robert B. Keiter
External Development Affecting the National Parks: Preserving "The Best Idea We Ever Had" (September 14-16)
13 pages.
Contains references.
International Law And External Threats To National Parks, Daniel Barstow Magraw
International Law And External Threats To National Parks, Daniel Barstow Magraw
External Development Affecting the National Parks: Preserving "The Best Idea We Ever Had" (September 14-16)
41 pages.
Contains references.
A Simple Solution For The Thorny Problem Of Park Protection: Focusing On Alternatives, David Mastbaum
A Simple Solution For The Thorny Problem Of Park Protection: Focusing On Alternatives, David Mastbaum
External Development Affecting the National Parks: Preserving "The Best Idea We Ever Had" (September 14-16)
116 pages (includes illustrations).
Contains footnotes and references.
Contains 3 attachments:
1) Article titled, "No Park Is an Island: A Simple Solution for the Thorny Problem of Park Protection," by David Mastbaum, from Resource Law Notes, Natural Resources Law Center.
2) Paper titled, "National Park Service War Work: December 7, 1941 to June 30, 1944" prepared by National Park Service.
3) Paper titled, "An Alternative to the Allen-Warner Valley Energy System: A Technical and Economic Analysis," by The Environmental Defense Fund, July 1980.