Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Engineering (14833)
- Computer Sciences (10548)
- Computer Engineering (7633)
- Chemistry (6859)
- Mathematics (6749)
-
- Environmental Sciences (6043)
- Social and Behavioral Sciences (5691)
- Earth Sciences (5278)
- Life Sciences (5027)
- Electrical and Computer Engineering (4997)
- Artificial Intelligence and Robotics (4688)
- Operations Research, Systems Engineering and Industrial Engineering (4057)
- Numerical Analysis and Scientific Computing (4007)
- Systems Science (3935)
- Physics (3121)
- Sustainability (2802)
- Statistics and Probability (2722)
- Education (2643)
- Materials Science and Engineering (2574)
- Physical Chemistry (2462)
- Oil, Gas, and Energy (2220)
- Materials Chemistry (2152)
- Mining Engineering (2080)
- Engineering Science and Materials (1793)
- Science and Mathematics Education (1639)
- Arts and Humanities (1623)
- Medicine and Health Sciences (1566)
- Applied Mathematics (1372)
- Power and Energy (1320)
- Institution
-
- TÜBİTAK (10730)
- China Simulation Federation (3924)
- Chinese Chemical Society | Xiamen University (2395)
- China Coal Technology and Engineering Group (CCTEG) (1822)
- University of South Florida (1514)
-
- Claremont Colleges (1327)
- Chulalongkorn University (1245)
- Wayne State University (1095)
- Prairie View A&M University (1094)
- University of Dar es Salaam (780)
- Denison University (756)
- Brigham Young University (711)
- University of Northern Iowa (707)
- Louisiana State University (690)
- University of Arkansas, Fayetteville (663)
- Embry-Riddle Aeronautical University (640)
- Universitas Indonesia (587)
- Changsha University of Science and Technology (570)
- Chinese Academy of Sciences (536)
- Department of Primary Industries and Regional Development, Western Australia (495)
- University of Minnesota Morris Digital Well (446)
- Virginia Commonwealth University (427)
- University of Montana (413)
- Ministry of Higher and Secondary Specialized Education of the Republic of Uzbekistan (406)
- National Taiwan Ocean University (390)
- Neutrosophic Systems with Applications (385)
- Thomas Jefferson University (383)
- Karbala International Journal of Modern Science (342)
- MMU Press (252)
- University of Tennessee, Knoxville (244)
- Keyword
-
- Physical Sciences (401)
- Western Australia (344)
- Outdoor education (230)
- Simulation (218)
- Deep learning (196)
-
- Machine learning (189)
- Numerical simulation (189)
- Mathematics (180)
- Stability (155)
- Climate change (133)
- Genetic algorithm (130)
- Machine Learning (129)
- Sustainability (128)
- Optimization (127)
- Artificial intelligence (123)
- Classification (119)
- Environment (118)
- Colinus virginianus (113)
- Turkey (112)
- Cybersecurity (110)
- Cyclic voltammetry (110)
- COVID-19 (109)
- Northern bobwhite (109)
- 1 (105)
- Adsorption (102)
- Mathematics and Computational Sciences (102)
- 2 (95)
- Particle swarm optimization (93)
- Electrochemistry (91)
- Conservation (90)
- Publication Year
- Publication
-
- Journal of System Simulation (3924)
- Turkish Journal of Electrical Engineering and Computer Sciences (3106)
- Turkish Journal of Chemistry (2730)
- Turkish Journal of Mathematics (2595)
- Journal of Electrochemistry (2395)
-
- Coal Geology & Exploration (1822)
- Turkish Journal of Physics (1382)
- Journal of Modern Applied Statistical Methods (1093)
- Applications and Applied Mathematics: An International Journal (AAM) (1088)
- Thai Environment (1027)
- Turkish Journal of Earth Sciences (917)
- International Journal of Speleology (909)
- The Synapse: Intercollegiate science magazine (756)
- Journal of Humanistic Mathematics (734)
- Journal of the Iowa Academy of Science: JIAS (701)
- Journal of Undergraduate Research (693)
- Tanzania Journal of Science (578)
- Journal of China & Foreign Highway (570)
- Journal of the Arkansas Academy of Science (564)
- Bulletin of Chinese Academy of Sciences (Chinese Version) (536)
- Journal of Digital Forensics, Security and Law (536)
- Journal of the Department of Agriculture, Western Australia, Series 4 (473)
- Communications on Stochastic Analysis (429)
- Journal of Mathematics and Science: Collaborative Explorations (426)
- Humanistic Mathematics Network Journal (415)
- The Mathematics Enthusiast (411)
- Journal of Marine Science and Technology–Taiwan (390)
- Neutrosophic Systems with Applications (385)
- Journal of the Minnesota Academy of Science (381)
- Sci-Tech News (357)
- File Type
Articles 42841 - 42870 of 43064
Full-Text Articles in Physical Sciences and Mathematics
Sunrise And Sunset Times For May-June 1952
Sunrise And Sunset Times For May-June 1952
Journal of the Department of Agriculture, Western Australia, Series 3
Supplied by the Government Astronomer
Times of sunrise and sunset for every fifth day, are given for a number of towns throughout the State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun's disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on …
Sunrise And Sunset Times For March-April, 1953
Sunrise And Sunset Times For March-April, 1953
Journal of the Department of Agriculture, Western Australia, Series 3
State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun's disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on a hill it would appear earlier.
[Supplied by the Government Astronomer]
Ionic Exchange In Soils: I. Measurement Of The Exchange Reaction By Means Of An Ion Exchange, D. A. Brown
Ionic Exchange In Soils: I. Measurement Of The Exchange Reaction By Means Of An Ion Exchange, D. A. Brown
Journal of the Arkansas Academy of Science
No abstract provided.
Ceramic Uses Of Arkansas Nepheline Syenite, Harry J. Reynolds
Ceramic Uses Of Arkansas Nepheline Syenite, Harry J. Reynolds
Journal of the Arkansas Academy of Science
No abstract provided.
Comments On The Bacillariophycaea Of North Central Arkansas, Albert Robinson Jr.
Comments On The Bacillariophycaea Of North Central Arkansas, Albert Robinson Jr.
Journal of the Arkansas Academy of Science
No abstract provided.
Apparatus For The Measurement Of Atmospheric Attenuation Of Light, John E. Lyon, Robert D. Woosley
Apparatus For The Measurement Of Atmospheric Attenuation Of Light, John E. Lyon, Robert D. Woosley
Journal of the Arkansas Academy of Science
No abstract provided.
On Arkansas Microndrili, David Causey
On Arkansas Microndrili, David Causey
Journal of the Arkansas Academy of Science
No abstract provided.
Wind Erosion Control—I, D J. Fleay
Wind Erosion Control—I, D J. Fleay
Journal of the Department of Agriculture, Western Australia, Series 3
Desserts have been formed in some parts of the world by the action of wind on once productive soils. This could happen to the light land areas of Western Australia if we do not profit by the lessons of the past and manage these soils with great care.
The Regeneration And Maintenance Of Wimmera Ryegrass Pastures Under Saline Soil Condition, F L. Shier
The Regeneration And Maintenance Of Wimmera Ryegrass Pastures Under Saline Soil Condition, F L. Shier
Journal of the Department of Agriculture, Western Australia, Series 3
Over the past ten years, Wimmera ryegrass pastures at the Salmon Gums Re- VJ search Station have been improved and maintained by periodic cultivation of the soil even without applications of superphosphate. On heavy crab-holey soil affected by high salt content and unsatisfactory for wheat growing, cultivation treatments have produced remarkably uniform stands of Wimmera ryegrass as shown in the accompanying pictures. The bare patches due to salt, have been largely eliminated. If the interval between cultivations is more than three years Wimmera pastures deteriorate badly.
Sunrise And Sunset Tables Times For Jan.-Feb., 1953
Sunrise And Sunset Tables Times For Jan.-Feb., 1953
Journal of the Department of Agriculture, Western Australia, Series 3
Times of sunrise and sunset for every fifth day, are given for a number of towns throughout the State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun's disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on a hill it would appear …
Soil Conservation Service - Basis Of Co-Operation, G H. Burvill
Soil Conservation Service - Basis Of Co-Operation, G H. Burvill
Journal of the Department of Agriculture, Western Australia, Series 3
The Soil Conservation Service has been established as provided in the Soil Conservation Act, 1945. To carry out its objectives will require the co-operation with it of individual farmers and landholders. The policy of the Service is therefore to encourage farmers to help themselves, and particularly to encourage them to recognise the need for soil conservation methods and for soil erosion control in the early stages. More particularly, the Service aims to provide, through its trained staff, technical asistance in the way of agricultural advice, research, conservation, planning, layouts and surveys. As indicated below, under the heading "Charges for Soil …
Soil-Saving Schools
Journal of the Department of Agriculture, Western Australia, Series 3
Save the soil for your sons and grandsons," or "Every farmer his own soil conservationist" might well serve as slogans for the recently-inaugurated farmers' schools organised in this State by the Soil Conservation Service. Judging by the enthusiasm shown by pupils at the first two schools, held in August last, this highly practical approach to an important subject seems destined to usher in an entirely new conception of soil conservation work as it affects the individual land-owner.
Sunrise And Sunset Tables
Journal of the Department of Agriculture, Western Australia, Series 3
Times of sunrise and sunset for every fifth day, are given for a number of towns throughout the State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun's disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on a hill it would appear …
The Hose U-Tube Level, J P. Fallon
The Hose U-Tube Level, J P. Fallon
Journal of the Department of Agriculture, Western Australia, Series 3
With the growing use of soil conservation practices throughout the farming areas, there has been an increasing demand for a simple levelling device that will enable farmers to take their own levels. When they have become familiar with the use of pasture furrows, contour banks and the various other mechanical erosion control measures, farmers with the aid of such an instrument would be able to make an immediate start on an erosion control programme. The instrument would also prove useful for numerous small jobs around the farm when accurate levels are required. Tests have shown the "Hose U-Tube Level" here …
Soil Conservation Farming. List Of Farmers Who Are Using Contour Practices
Soil Conservation Farming. List Of Farmers Who Are Using Contour Practices
Journal of the Department of Agriculture, Western Australia, Series 3
A list of farmers known to be using contour practices for soil conservation, is printed at the end of this note. It will enable other interested farmers to find and see something of such methods. Now is considered an appropriate time to publish this list as many farmers will shortly be travelling through the countryside to agricultural shows and field days.
Sunrise And Sunset Times For Sept.-Oct., 1952
Sunrise And Sunset Times For Sept.-Oct., 1952
Journal of the Department of Agriculture, Western Australia, Series 3
Times of sunrise and sunset for every fifth day, are given for a number of towns throughout the State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun s disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on a hill it would …
The Character Of Minnesota Well Waters, With Special Emphasis On The St. Cloud Region And Stearns County, Matthew A. Kiess
The Character Of Minnesota Well Waters, With Special Emphasis On The St. Cloud Region And Stearns County, Matthew A. Kiess
Journal of the Minnesota Academy of Science
No abstract provided.
Use Of P32, Sr89, And Ca45 In Mechanical Dishwashing Studies, A. T. Martin, C. H. Shiflett, J. L. Wilson
Use Of P32, Sr89, And Ca45 In Mechanical Dishwashing Studies, A. T. Martin, C. H. Shiflett, J. L. Wilson
Journal of the Minnesota Academy of Science
No abstract provided.
Dams On The Hillsides
Journal of the Department of Agriculture, Western Australia, Series 3
A reader of the "Journal of Agriculture" recently wrote to the Commissioner of Soil Conservation concerning the current tendency towards sinking dams on hillsides. He stated that many farmers and contractors were throwing up holding banks in such a manner that a large percentage of the water impounded was lost by seepage under the banks.
Sunrise And Sunset Times For July - Aug., 1952
Sunrise And Sunset Times For July - Aug., 1952
Journal of the Department of Agriculture, Western Australia, Series 3
(Supplied by the Government Astronomer)
Times of sunrise and sunset for every fifth day, are given for a number of towns throughout the State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun's disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on …
Chemical Magic Experiments, Leonard A. Ford
Chemical Magic Experiments, Leonard A. Ford
Journal of the Minnesota Academy of Science
No abstract provided.
Water Erosion Control, L C. Lightfoot
Water Erosion Control, L C. Lightfoot
Journal of the Department of Agriculture, Western Australia, Series 3
Although soil erosion caused by water action is common in our agricultural areas, effective erosion control measures, likely to pay for themselves quickly, can be applied in nearly every case. Plant cover above the soil surface, and fertile soil with good structures are the main factors which enable soils to resist erosion. Dense pasture gives the best cover and at the same time improves the fertility and structure of the soil both effectively and economically, so land management adjusted to the need and capability of soils, slopes and climate is of first importance. Contour practices are of secondary value and …
Sunrise And Sunset Times For May-June, 1952
Sunrise And Sunset Times For May-June, 1952
Journal of the Department of Agriculture, Western Australia, Series 3
Times of sunrise and sunset for every fifth day, are given for a number of towns throughout the State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun's disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on a hill it would appear …
X-Ray Investigations Of Arkansas Graphites, John A. Doughty
X-Ray Investigations Of Arkansas Graphites, John A. Doughty
Journal of the Arkansas Academy of Science
No abstract provided.
What Is A Riemmian Manifold?, Frederick Griffin
What Is A Riemmian Manifold?, Frederick Griffin
Journal of the Arkansas Academy of Science
No abstract provided.
Limnological Studies In Arkansas. Ii. The Effect Of Intense Rainfall On The Abundance And Vertical Distribution Of Plankton In Lake Fort Smith, Arkansas, Carl E. Hoffman
Limnological Studies In Arkansas. Ii. The Effect Of Intense Rainfall On The Abundance And Vertical Distribution Of Plankton In Lake Fort Smith, Arkansas, Carl E. Hoffman
Journal of the Arkansas Academy of Science
No abstract provided.
Limnological Studies In Arkansas. I. Physico-Chemical And Net Plankton Studies Of Lake Fort Smith In Its Fourth Year Of Impoundment, Carl E. Hoffman, David Causey
Limnological Studies In Arkansas. I. Physico-Chemical And Net Plankton Studies Of Lake Fort Smith In Its Fourth Year Of Impoundment, Carl E. Hoffman, David Causey
Journal of the Arkansas Academy of Science
No abstract provided.
Sunrise And Sunset Times For March-April 1952
Sunrise And Sunset Times For March-April 1952
Journal of the Department of Agriculture, Western Australia, Series 3
Times of sunrise and sunset for every fifth day, are given for a number of towns throughout the State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun's disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on a hill it would appear …
Kimberley Soils Need Phosphates, W. M. Nunn
Kimberley Soils Need Phosphates, W. M. Nunn
Journal of the Department of Agriculture, Western Australia, Series 3
Research work carried out at the Kimberley Research Station on the Ord River, and on experimental plots throughout the East and West Kimberleys, indicates that the soils of the Kimberleys are quite as deficient in phosphorus as are the soils of our agricultural areas where superphosphate is essential to the growth of most crops.
This may come as a surprise to many people, for there has been a widespread tendency to assume that the Kimberleys soils, especially those of the Ord and Fitzroy valleys, are highly fertile.
The black earths of Queensland's Darling Downs produce most enviable yields of sorghum …
Soil Conservation In Western Australia, G. H. Burvill
Soil Conservation In Western Australia, G. H. Burvill
Journal of the Department of Agriculture, Western Australia, Series 3
Soil is a farmer's basic asset. This issue of "The Journal of Agriculture" in a new form designed to provide still better service to the farming community, is an appropriate medium through which to remind the man on the land of what the soil means to him—and to the State. The farmer's duties to himself, his family and the State are summed up in the words "soil conservation" which is merely another way of saying "wise land use."