Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Earth Sciences (58733)
- Computer Sciences (57951)
- Environmental Sciences (52381)
- Engineering (40236)
- Life Sciences (39774)
-
- Physics (36527)
- Chemistry (34520)
- Geology (29715)
- Mathematics (27382)
- Social and Behavioral Sciences (24564)
- Oceanography and Atmospheric Sciences and Meteorology (16422)
- Statistics and Probability (13246)
- Computer Engineering (12809)
- Education (12808)
- Soil Science (11977)
- Medicine and Health Sciences (11785)
- Plant Sciences (11182)
- Natural Resources and Conservation (10267)
- Arts and Humanities (9726)
- Astrophysics and Astronomy (9206)
- Electrical and Computer Engineering (8897)
- Sustainability (8693)
- Natural Resources Management and Policy (8567)
- Artificial Intelligence and Robotics (8513)
- Water Resource Management (8291)
- Applied Mathematics (7991)
- Environmental Health and Protection (6879)
- Science and Mathematics Education (6761)
- Databases and Information Systems (6720)
- Institution
-
- University of Nebraska - Lincoln (24230)
- Western Michigan University (19508)
- Selected Works (16838)
- University of Kentucky (12002)
- TÜBİTAK (10317)
-
- Singapore Management University (7453)
- Utah State University (7340)
- Missouri University of Science and Technology (6056)
- Old Dominion University (5953)
- University of Wollongong (4868)
- William & Mary (4602)
- University of South Florida (3859)
- Wright State University (3840)
- Portland State University (3798)
- University of Nevada, Las Vegas (3640)
- Louisiana State University (3417)
- China Simulation Federation (3382)
- City University of New York (CUNY) (3219)
- Brigham Young University (2906)
- Purdue University (2813)
- Air Force Institute of Technology (2678)
- Claremont Colleges (2640)
- California Polytechnic State University, San Luis Obispo (2568)
- Western Washington University (2456)
- University of Arkansas, Fayetteville (2433)
- University of Texas Rio Grande Valley (2419)
- Department of Primary Industries and Regional Development, Western Australia (2354)
- University of Texas at El Paso (2316)
- Chinese Chemical Society | Xiamen University (2294)
- Chulalongkorn University (2268)
- Keyword
-
- Machine learning (1689)
- Climate change (1680)
- Western Australia (1581)
- Mathematics (1369)
- Chemistry (1157)
-
- Sustainability (1141)
- Physics (1068)
- Water quality (983)
- Deep learning (892)
- Geology (858)
- Groundwater (851)
- Machine Learning (829)
- Simulation (824)
- Research and Technical Reports (797)
- Water (780)
- United States (757)
- Education (756)
- Management (745)
- Nebraska (744)
- Agriculture (718)
- Artificial intelligence (707)
- Climate (702)
- GIS (698)
- Statistics (685)
- Security (681)
- Grains and field crops (674)
- Environment (672)
- Computer Science (667)
- Ecology (658)
- Optimization (656)
- Publication Year
-
- 2024 (7891)
- 2023 (12585)
- 2022 (18300)
- 2021 (27877)
- 2020 (15207)
-
- 2019 (15927)
- 2018 (13646)
- 2017 (12521)
- 2016 (12690)
- 2015 (12617)
- 2014 (12299)
- 2013 (11462)
- 2012 (12196)
- 2011 (10325)
- 2010 (8621)
- 2009 (7616)
- 2008 (7321)
- 2007 (6758)
- 2006 (5872)
- 2005 (5573)
- 2004 (4447)
- 2003 (3876)
- 2002 (3435)
- 2001 (3030)
- 2000 (2919)
- 1999 (2555)
- 1998 (2574)
- 1997 (2472)
- 1996 (2437)
- 1995 (2193)
- Publication
-
- Legacy Scout Tickets from Pure Oil Company (11044)
- Theses and Dissertations (8341)
- IGC Proceedings (1993-2023) (7001)
- Research Collection School Of Computing and Information Systems (6891)
- Thin Sections (5745)
-
- Electronic Theses and Dissertations (4195)
- Faculty Publications (3783)
- Journal of System Simulation (3382)
- Nebraska Tractor Tests (3348)
- Turkish Journal of Electrical Engineering and Computer Sciences (3020)
- Masters Theses (2634)
- Turkish Journal of Chemistry (2628)
- Turkish Journal of Mathematics (2494)
- Journal of Electrochemistry (2294)
- Honors Theses (2158)
- Faculty of Informatics - Papers (Archive) (2013)
- Physics Faculty Publications (1942)
- Bulletin of the Mineral Research and Exploration (1893)
- Doctoral Dissertations (1882)
- Dissertations, Theses, and Masters Projects (1876)
- Reports (1835)
- Dissertations (1816)
- Physics Faculty Research & Creative Works (1762)
- Department of Computer Science Technical Reports (1721)
- USF Tampa Graduate Theses and Dissertations (1607)
- School of Natural Resources: Faculty Publications (1586)
- United States Department of Agriculture Wildlife Services: Staff Publications (1529)
- Australian Institute for Innovative Materials - Papers (1524)
- Electronic Thesis and Dissertation Repository (1476)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (1427)
- Publication Type
Articles 292981 - 293010 of 302561
Full-Text Articles in Physical Sciences and Mathematics
On The Food And Feeding Habits Of Lepidomysis Longipes (Pillai & Mariamma) (Crustacea Mysidacea), C. N. Nath, N. K. Pillai
On The Food And Feeding Habits Of Lepidomysis Longipes (Pillai & Mariamma) (Crustacea Mysidacea), C. N. Nath, N. K. Pillai
International Journal of Speleology
The amount of food available to the subterranean mysid, Lepidomysis longipes (Pillai & Mariamma, 1964) in its habitat has been calculated and analysed. Lepidomysis appears to feed mainly on decaying vegetable matter. Lepidomysis shows many modifications in its external morphology. Consequently, the mode of feeding has undergone some marked changes from that of its epigean relatives. L. longipes is a discontinuous feeder.
A Propos Du Stenasellus Laticarpus Birstein (Crustacea Isopoda Asellota), Guy Magniez
A Propos Du Stenasellus Laticarpus Birstein (Crustacea Isopoda Asellota), Guy Magniez
International Journal of Speleology
The species Stenasellus laticarpus Birstein is closely related to three west-African Stenasellidae, forming the genus Magniezia Lanza. It belongs to the same genus: Stenasellus laticarpus = Magniezia laticarpa (Birstein).
Deux Stenasellidae Cavernicoles Nouveaux De L'Amerique Centrale: Mexistenasellus Parzefalli N. Sp. Et Mexistenasellus Wilkensi N. Sp. (Crustacea Isopoda Asellota), Guy Magniez
International Journal of Speleology
Description of the females of two new species of the family Stenasellidae (anophthalmous and unpigmented Asellota from underground waters). They were found in a little cave of San-Luis Potosi state (Mexico).
Black Magnetic Spherules From The Glacial And Sea Ice Of Fletcher's Ice Island (T-3), Richard Scattolini
Black Magnetic Spherules From The Glacial And Sea Ice Of Fletcher's Ice Island (T-3), Richard Scattolini
Theses and Dissertations
Black magnetic spherules are particles which can be derived by ablationary processes from cosmic sources. Spherules from both the glacial ice and sea ice of Fletcher's Ice Island (T-3) were studied to determine their size distribution, sedimentation rates, and other parameters. The results were examined and shown to be similar to those of other researchers' work elsewhere.
Calculated sedimentation rates for glacial ice spherules, extrapolated for the entire earth's surface, range from 1.1 x 10⁴ to 1.1 x 10⁵ metric tons per year. Calculated sedimentation rates for sea ice spherules range from 5.0 x 10³ to 1.6 x 10⁵ metric …
Annotated Bibliography Of The Geology Of North Dakota, 1806-1959, Mary Woods Scott
Annotated Bibliography Of The Geology Of North Dakota, 1806-1959, Mary Woods Scott
Theses and Dissertations
References to the literature on North Dakota geology published between 1805 and 1960 are listed in this annotated bibliography. Published bibliographies on North American geology, bibliographies on geological subjects important to North Dakota, unpublished lists of references, and references cited in each entry herein were used to compile the bibliography. Each reference is provided with an annotation of its contents. A subject and geographical index and a list of serials cited are included.
Reaction Of Aqueous Catechol Solutions With Minerals, Boonthong Poocharoen
Reaction Of Aqueous Catechol Solutions With Minerals, Boonthong Poocharoen
Dissertations and Theses
The effectiveness of catechol, an aromatic vic-diol, in dissolving silicate minerals was studied. A synthetic amorphous magnesium trisilicate, Mg₂Si₃O₈∙5H₂O, as well as the minerals olivine, sepiolite, diopside, augite, and enstatite were used to react with catechol in slightly acidic, basic, and neutral solutions. It was found, depending on the solvent used, that 33-52, 8-17, 14-30, 5-11, 3-6, and 0.5-1 % of the minerals dissolved, respectively.
The reaction with Mg₂Si₃0₈·5H₂0 resulted in the formation of crystals of magnesium tris (catecholato) siliconate nonahydrate Mg[Si(Cat)₃]∙9H₂0. Dehydration of the crystals at room temperature resulted in the loss of 6 moles of water to form …
A Feasibility Study Of Commercial Upland Game Bird Farms In Waterloo County, Ontario, Robert John Mcclure
A Feasibility Study Of Commercial Upland Game Bird Farms In Waterloo County, Ontario, Robert John Mcclure
Theses and Dissertations (Comprehensive)
No abstract provided.
Chesapeake Bay Bibliography - Volume Ii Virginia Waters, Pamela S. Tennyson, Susan O. Barrick, Frank J. Wojcik, William J. Hargis Jr.
Chesapeake Bay Bibliography - Volume Ii Virginia Waters, Pamela S. Tennyson, Susan O. Barrick, Frank J. Wojcik, William J. Hargis Jr.
Reports
The Chesapeake Bay Bibliography was initiated by the Virginia Institute of Marine Science in response to growing resource management problems of the Chesapeake Bay and its tributaries. With these problems carne the realization that planning and management of such a great natural resource is an overwhelming task requiring the best available information. This bibliography, therefore, was undertaken to document existing sources of information, to help identify research and data gathering needs, and to develop a comprehensive research and information services programs for individuals interested in research on, and management of the natural resources of the Chesapeake Bay region.
This, the …
A Study Of Some Complexometric Titrations In Nonaqueous Solvents, Ngo The Hung
A Study Of Some Complexometric Titrations In Nonaqueous Solvents, Ngo The Hung
Masters Theses
"Complexometric titrations of calcium, zinc and lead with polyaminocarboxylic acids: ethylenediaminetetraacetic acid (EDTA), 1,2-diaminocyclohexanetetraacetic acid (DCTA), ethyleneglycol-bis(2-aminoethylether)tetraacetic acid (EGTA) and tetraethylenepentamine (tetren) have been investigated and compared in the following organic solvents: methanol, dimethyl formamide, dimethyl sulfoxide and methyl ethyl ketone. Various end point detection methods have been used: direct visual titration with metallochromic indicators and instrumental detection by photometry, potentiometry (mercury electrode and lead ion selective electrode) and amperometry. Calcium, zinc and lead can be determined up to trace levels (ppm) under specific conditions. A concrete application of this thesis is the determination of zinc or calcium in a …
A Geochemical Reconnaissance Of Puerto Rican Beach Sands, Louis Meinecke Iii
A Geochemical Reconnaissance Of Puerto Rican Beach Sands, Louis Meinecke Iii
Masters Theses
"Twenty-four beach sand samples from the island of Puerto Rico were collected in 1964 by Dr. Ernst Bolter as part of a radiometric survey conducted by him. These samples were given to the author in 1969 for chemical analysis.
The purpose of this investigation was to conduct a geochemical reconnaissance study of the beach sands in order to determine the geochemical background and possible anomalies. This information could aid in offshore mineral exploration and source area determination.
This thesis presents the results of a quantitative chemical analysis for copper, lead, zinc, iron, manganese, aluminum, sodium, potassium, calcium, magnesium, and strontium …
Vibrational Analysis Of Octahedral Molecules, Magdi Aziz Girgis
Vibrational Analysis Of Octahedral Molecules, Magdi Aziz Girgis
Archived Theses and Dissertations
No abstract provided.
Stratigraphy And History Of The Sakakawea Sequence, South-Central North Dakota, William B. Bickley Jr.
Stratigraphy And History Of The Sakakawea Sequence, South-Central North Dakota, William B. Bickley Jr.
Theses and Dissertations
The Sakakawea Sequence (Pleistocene) in North Dakota contains six formations that make up the Coleharbor Group (Pleistocene). The Braddock Formation (Wisconsinan) is mainly glacial sediment. The Emmons Formation (late Wisconsinan) is mainly glacial sediment. The Four Bears Formation (Wisconsinan) is mainly either fluvial or lacustrine sediment. The Coteau Formation (Holocene) is mostly fluvial, colluvial, or slough sediment. The Denbigh Formation (Holocene) is mostly eolian sediment. The Oahe Formation (late Wisconsinan and Holocene) is mostly eolian sediment (loess) The Oahe Formation is divided into three members: the Mallard Island (late Wisconsinan), Aggie Brown (latest Wisconsinan to earliest Holocene), and Riverdale (middle …
Geology Of Southern Nelson County, North Dakota, Roger J. Reede
Geology Of Southern Nelson County, North Dakota, Roger J. Reede
Theses and Dissertations
Southern Nelson County occupies 576 square miles in northeastern North Dakota (Twps. 149-152 N., Rgs. 57-62 W.). Its surface is mantled with glacial drift resting unconformably on the Cretaceous Pierre Shale, which is exposed along the Sheyenne River Valley and the Stump Lake Basin. The entire mantle of glacial drift is part of the Coleharbor Formation, which, in southern Nelson County, averages 45 feet thick with a maximum thickness over 200 feet. Drill-hole data and missile site excavations provide good evidence for the existence of multiple drift sheets, including layers of till separated by more than 25 feet of outwash, …
Inner Shelf Sediments Off Chesapeake Bay. I - General Lithology And Composition, Maynard M. Nichols
Inner Shelf Sediments Off Chesapeake Bay. I - General Lithology And Composition, Maynard M. Nichols
Reports
The sedimentary materials and bottom topography of more than 2400 square miles of the inner continental shelf floor north off the Chesapeake Bay entrance have been surveyed for potential mineral resources. Sediments consist of two principal types: (1) fine sand and (2) medium to coarse sand. The fine sand is grey-colored, subrounded, rich in quartz and relatively 11clean 11 and well sorted. The medium-coarse sand is typically iron-stained, rich in shell and poorly sorted. The fine sand covers inner parts of the shelf floor whereas medium to coarse sand covers seaward parts. Additionally, shell-rich medium to coarse sand occurs on …
Asymptotic Behavior Of Solutions Of Lu=G(T,U,Dots,U^(K-1)), William F. Trench
Asymptotic Behavior Of Solutions Of Lu=G(T,U,Dots,U^(K-1)), William F. Trench
William F. Trench
No abstract provided.
Stability Of A Class Of Discrete Minimum Variance Smoothing Formulas, William F. Trench
Stability Of A Class Of Discrete Minimum Variance Smoothing Formulas, William F. Trench
William F. Trench
No abstract provided.
Storm-Wave And Storm-Surge Modification Of Virginia's Ocean Coast, Wyman Harrison
Storm-Wave And Storm-Surge Modification Of Virginia's Ocean Coast, Wyman Harrison
Reports
The purpose of this study was to begin work on a method for operational prediction of storm-induced beach changes. The thought was to use wind and storm-surge data that are predicted on a routine basis by the National Weather Service, NOAA, and it was felt that if such a procedure could be developed, it would be possible to provide estimates of beach erosion or deposition as part of routine weather forecasts whenever storms threatened. It was also hoped that it might be possible to make estimates of shoreline erosion during previous years by using historical storm data in the prediction …
A Carp-Goldfish Hybrid With No Caudal Fin, Richard E. Spieler
A Carp-Goldfish Hybrid With No Caudal Fin, Richard E. Spieler
Marine & Environmental Sciences Faculty Articles
No abstract provided.
Adsorption Of Sulfur Dioxide On Douglas Fir Woodchips, Uen-Ping David Wang
Adsorption Of Sulfur Dioxide On Douglas Fir Woodchips, Uen-Ping David Wang
Dissertations and Theses
In recent years, people have raised their alertness to the hazard of air pollution. Sulfur dioxide is one of the most dangerous chemical compounds among those air pollutants. A study on removing sulfur dioxide from an air stream by adsorption using wood chips as the adsorbent is presented in this thesis.
The reason for using wood as an adsorbent is that wood is a porous material and possesses a large surface of cell cavities which can hold a great amount of moisture. As sulfur dioxide gas is passed through the wood bed, it would be either condensed in the cell …
Ua66/7/2 Newsletter, Wku Chemistry
Ua66/7/2 Newsletter, Wku Chemistry
WKU Archives Records
Newsletter created by and about the WKU Chemistry department.
Special Purpose Areas In Virginia's Coastal Zone, J. B. Pleasants
Special Purpose Areas In Virginia's Coastal Zone, J. B. Pleasants
Reports
The Virginia Institute of Marine Science is charged with the responsibility of advising state management agencies on matters relating to the environments and resources of the coastal zone of Virginia. Under this broad requirement, we have been specifically assigned the task of recommending an ocean-dumping policy for the Commonwealth. This paper, a survey of specially designated areas in coastal waters of the state, is designed to provide some of the background material required in the development of such a policy.
Conflicts In Water Managment, A. Alvin Bishop
Conflicts In Water Managment, A. Alvin Bishop
Faculty Honor Lectures
Today we hear a lot about the "quality of life" and the "quality of the environment," two terms that everyone understands, but as yet no one has defined. Like others, I will not attempt a definition but introduce my subject by saying that water is intimately tied up with both our life and our environment, and its management has a profound effect for good or bad, depending upon the point of view. Today also, clean water and anti-pollution are popular crusades. Someone or something has to be responsible and engineering and science are convenient scapegoats. Considerable emotionalism is involved and …
Response Of Fraxinus Pennsylvanica M. Provenances To Daylength And Temperature, Cheng-Chun Ying
Response Of Fraxinus Pennsylvanica M. Provenances To Daylength And Temperature, Cheng-Chun Ying
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Terminal Talk - The Wofford Connection - December 1971, Wofford College Computer Center
Terminal Talk - The Wofford Connection - December 1971, Wofford College Computer Center
Terminal Talk
No abstract provided.
The Prairie Naturalist Vol. 3, Nos. 3 And 4. September-December, 1971
The Prairie Naturalist Vol. 3, Nos. 3 And 4. September-December, 1971
The Prairie Naturalist
EDITORIAL: Badlands-Old and New ▪ Paul B. Kannowski
SEASONAL INVESTIGATIONS OF ALGAE FROM DEVILS LAKE, NORTH DAKOTA ▪ Richard Verch and Dean W. Blinn
THE VASCULAR FLORA OF PEMBINA COUNTY, NORTH DAKOTA ▪ Rays E. Willenbring and William T. Barker
LET'S EAT WILD ▪ Alan M. Cvancara
SURF SCOTER IN NORTH DAKOTA ▪ Harold A. Kantrud
SNOW GOOSE-CANADA GOOSE HYBRIDS ▪ David C. McGlauchlin
NOTES
Cowbird parasitism of an upland plover nest ▪ Kenneth F. Higgins
Birds sighted within one hour from one observation point in Burleigh County, North Dakota ▪ William A. Buresh
Golden-winged warbler in Burleigh County, North …
Shubnikov-De Haas Effect And Magnetic Breakdown In Be , David J. Sellmyer, I.S. Goldstein, B.L. Averbach
Shubnikov-De Haas Effect And Magnetic Breakdown In Be , David J. Sellmyer, I.S. Goldstein, B.L. Averbach
David Sellmyer Publications
Magnetic breakdown in the basal plane of Be was investigated in fields up to 150 kG. Geometrical aspects of the open orbits caused by breakdown are discussed. An estimate of 30 kG for the characteristic breakdown field is obtained by applying the theory of Falicov et al. Shubnikov-de Haas frequency measurements are reported for the central-cigar cross section. These measurements are relevant to a recent conjecture that the Onsager-Lifshitz quantization scheme may be violated in the presence of magnetic breakdown.
Metabolic Role Of Sulfates And Sulfides Producing Bacteria In Pollution Of Waters, M. I. H. Aleem
Metabolic Role Of Sulfates And Sulfides Producing Bacteria In Pollution Of Waters, M. I. H. Aleem
KWRRI Research Reports
Cytochrome transport particles from Nitrobacter catalyzed nitrite, ascorbate as well as NADH oxidation with concomitant phosphate esterification yielding P/0 ratios of 1.0, 0.6 and 2.0 respectively. Phosphorylation coupled to nitrite oxidation was not effected by rotenone, amytal or antimycin while 50 and 70% inhibition of the NADH-linked phosphorylation was observed in the presence of HOQNO and rotenone respectively. Cell-free extracts from Nitrobacter also catalyzed an energy-dependent reduction of NAD+ by nitrite. The reduction of cytochrome c by NŌ2 was energy-dependent which involved the reversal of electrons from cytochrome a1. The subsequent energy-linked reduction of the flavoproteins …
Capillary-Diffusion And Self-Diffusion Of Liquid Water In Unsaturated Soils, Ronald E. Phillips, V. L. Quisenberry Jr.
Capillary-Diffusion And Self-Diffusion Of Liquid Water In Unsaturated Soils, Ronald E. Phillips, V. L. Quisenberry Jr.
KWRRI Research Reports
Capillary-diffusion coefficients were measured by use of inflow and outflow methods. With both methods the capillary-diffusion coefficients decreased very rapidly with decreasing water content. The lighter textured soils were found to have the higher diffusion coefficients over the entire moisture content range studied, 0 to 1 bar tension.
Self-diffusion coefficients were measured over a moisture content range from air dryness to saturation using 3H as a tracer of water. Each of the soils gave the same diffusion characteristics when the self-diffusion coefficients were expressed as a function of either water content or average number of water layers on the …
Sero-Epidemiology Of Q Fever With Special Reference To Complications In A Hospital Population Of Southern California, Ajit Singh Randhawa
Sero-Epidemiology Of Q Fever With Special Reference To Complications In A Hospital Population Of Southern California, Ajit Singh Randhawa
Loma Linda University Electronic Theses, Dissertations & Projects
[Abstract Not Included]
A Simple Method For The Construction Of Empirical Confidence Limits For Economic Forecasts, William (Bill) H. Williams, M. L. Goodman
A Simple Method For The Construction Of Empirical Confidence Limits For Economic Forecasts, William (Bill) H. Williams, M. L. Goodman
Publications and Research
A simple method for the construction of empirical confidence intervals for time series forecasts is described. The procedure is to go through the series making a forecast from each point in time. The comparison of these forecasts with the known actual observations will yield an empirical distribution of forecasting errors. This distribution can then be used to set confidence intervals for subsequent forecasts. The technique appears to be particularly useful when the mechanism generating the series cannot be fully identified from the available data or when limits based on more standard considerations are difficult to obtain.