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Articles 283531 - 283560 of 293936
Full-Text Articles in Physical Sciences and Mathematics
Annual Report 1972-73 And Membership Directory, Iowa Academy Of Science
Annual Report 1972-73 And Membership Directory, Iowa Academy Of Science
Iowa Academy of Science Documents
Contents:
Minutes of the Annual Business Meeting --- 4
Report of the Executive Secretary --- 10
Report of the Treasurer --- 21
Report of the Finance Committee --- 23
Report of the Membership Committee --- 25
Report of the Publications Committee --- 26
Report of the Recognition and Awards Committee --- 27
Report of the Social Implications Committee --- 28
Report of the Student Programs Committee --- 32
Report of the Librarian --- 35
Report of the Articulation Committee --- 36
Constitution, Bylaws, and Articles of Incorporation --- 37
Constitution --- 38
Bylaws --- 42
Restated Articles of Incorporation --- …
Photochemical Rearrangements Of 6/5 -Fused Cross-Conjugated Cyclohexadiensnes In Protic Solvents, Drury Caine, John T. Gupton, Ko Ming, William J. Powers Iii
Photochemical Rearrangements Of 6/5 -Fused Cross-Conjugated Cyclohexadiensnes In Protic Solvents, Drury Caine, John T. Gupton, Ko Ming, William J. Powers Iii
Chemistry Faculty Publications
Irradiation of the ring A unsubstituted 6/5-fused cross-conjugated cyclohexadienone (1a) and its 2-methyl derivative (1b) in methanolic acetic acid yields, in addition to other products, novel tricyclononane derivatives which have been assigned the structures (3a) and (3b).
Polarographic Trace Analysis Of Copper, Lead And Cadmium, Donald Paul Jepson
Polarographic Trace Analysis Of Copper, Lead And Cadmium, Donald Paul Jepson
University of the Pacific Theses and Dissertations
The area of study for this project was the development of an accurate, reliable, and inexpensive method of trace analysis for copper, cadmium, and lead in foods. AT this time, the Association of Official Analytical Chemists Manual, eleventh edition, (4) has only official and recognized methods of analysis for copper (25.023), cadmium (25.018), and lead (25.041). In general, these procedures are long and tedious. The digestions involved often require many hours and are quite dangerous due to leakage of metallic and organometallic fumes from the digestion apparatus. The official methods of analysis for these elements require a very large outlay …
Consumption, Utilization And Modification Of Nutritional Resources By The Jackrabbit (Lepus Californicus) In The Mohave Desert, V.H. Shoemaker, K.A. Nagy, W.R. Costa
Consumption, Utilization And Modification Of Nutritional Resources By The Jackrabbit (Lepus Californicus) In The Mohave Desert, V.H. Shoemaker, K.A. Nagy, W.R. Costa
Memorandum
No abstract provided.
Demographic Studies Of Sagebrush Insects As Functions Of Various Environmental Factors, T. H. Hsiao, R. L. Kirkland
Demographic Studies Of Sagebrush Insects As Functions Of Various Environmental Factors, T. H. Hsiao, R. L. Kirkland
Memorandum
No abstract provided.
Terrestrial Models: Animal Processes (Versions I, Ii), S. Payne
Terrestrial Models: Animal Processes (Versions I, Ii), S. Payne
Memorandum
No abstract provided.
Application Of Remote Sensing Techniques For Analysis Of Desert Biome Validation Studies, P. T. Tueller, Garwin Lorain
Application Of Remote Sensing Techniques For Analysis Of Desert Biome Validation Studies, P. T. Tueller, Garwin Lorain
Memorandum
No abstract provided.
Curlew Valley Validation Site Report, David F. Balph
Logical Transition From Magnetic Poles To Current Loops, H. E. Mccloud
Logical Transition From Magnetic Poles To Current Loops, H. E. Mccloud
Journal of the Arkansas Academy of Science
Consideration of the relationship between the magnetic field produced by a magnetic shell and that produced by a current loop requires the evaluation of the line integral ɸH̅ • dl̅, where a portion of the path must cross the dipole layer. The correct line integral to be evaluated must be ɸB̅ • dl̅. The evaluation of this integral leads immediately to the correct Maxwell equation in ∆ x H̅. Gaussian units are used.
A Two Dimensional Jet Flowing Into A Semi-Infinite Flow Field With An Ambient Velocity, Michael Leonard Crane
A Two Dimensional Jet Flowing Into A Semi-Infinite Flow Field With An Ambient Velocity, Michael Leonard Crane
Dissertations, Theses, and Masters Projects
No abstract provided.
Ecological Survey, Upper James River, Surry Nuclear Power Station Site, July 1973, Michael E. Bender, Marion Y. Hedgepeth, Et Al
Ecological Survey, Upper James River, Surry Nuclear Power Station Site, July 1973, Michael E. Bender, Marion Y. Hedgepeth, Et Al
Reports
Beginning in Hay of 1969 field surveys have been conducted in the Hog Island area of the James River to characterize the biota of the region. The objective of these surveys has been to determine any significant changes in the biota related to the operation of the nuclear power station. Although during the period of study, methods and stations have been changed to adjust the study to changing regulations, its basic character has remained. Communities surveyed have included benthos, epibenthos, zoo- and phytoplankton, fish, and fouling organisms. In addition, special studies of thermal tolerance have been conducted on oysters and …
New Approaches To The Study Of The Circulation On The Continental Shelf, Paul V. Hyer
New Approaches To The Study Of The Circulation On The Continental Shelf, Paul V. Hyer
Reports
The current state of knowledge of continental shelf circulation is summarized . Existing data collections are reviewed for quality and quantity. Descriptions are given of possible advanced experiments utilizing remote sensing and buoy technology to study water exchanges between the shelf and Gulf Stream.
Hydrogeology Of A Sanitary Landfill, Mandan, North Dakota, Raymond D. Butler
Hydrogeology Of A Sanitary Landfill, Mandan, North Dakota, Raymond D. Butler
Theses and Dissertations
The data from this study can be applied to much of southwestern North Dakota because the geologic and climatic conditions are similar.
The Mandan landfill is on the Heart River floodplain and next to the river on the north and steep valley wall on the south. The sanitary landfill bas been used for over 20 years.
The only pre-Pleistocene unit exposed is the Cannonball Formation, which is interbedded sand, silt, and clay. Quaternary units consist of till, fluvial sand, silt, clay, and gravel, and eolian sand and silt.
A local flow system recharges on the upland next to the valley …
Grey Kangaroo Management Programme, Department Of Agriculture, Western Australia
Grey Kangaroo Management Programme, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
The Grey Kangaroo Management Programme, introduced in 1971 by the Department of Fisheries and Fauna, is designed to ensure the long-term conservation of the grey kangaroo, while at the same time recognising the right of the landholder to protect his primary production from damage.
One of the points which has arisen after examination of the programme is that some individual farmers are not fully aware of the requirements of the regulations.
The Soil Conservation Service : Its Basis Of Co-Operation With Landowners, G W. Spencer, J. E. Watson
The Soil Conservation Service : Its Basis Of Co-Operation With Landowners, G W. Spencer, J. E. Watson
Journal of the Department of Agriculture, Western Australia, Series 4
The Soil Conservation Act of 1945 set up within the Department of Agriculture a Soil Conservation Service under the control of a Commissioner of Soil Conservation.
The Service aims to promote types of land use which will conserve the soil and prevent or overcome soil erosion. It also aims to educate landholders and the public generally in the aims and practice of soil conservation.
This article relates mainly to farm land activities, and in particular the co-operation of the Service with individual primary producer landholders for the prevention and control of erosion on their land.
Objective Measurement Of Wool : Criteria, Methods And Materials, A Ingleton
Objective Measurement Of Wool : Criteria, Methods And Materials, A Ingleton
Journal of the Department of Agriculture, Western Australia, Series 4
An outline of some of the technical aspects of the objective measurement of wool—processes that will mean major cost savings to the wool industry.
Potassium For Pastures, Walter Jacob Cox
Potassium For Pastures, Walter Jacob Cox
Journal of the Department of Agriculture, Western Australia, Series 4
IVIany pastures in the south-west of Western Australia are deficient in potassium or need regular dressings for maximum growth. This article indicates areas and situations in which potassium might be needed, shows how deficiency is diagnosed and gives recommended rates of application.
1973 Rates Of Phosphate On Lupin Yield, G Walton
1973 Rates Of Phosphate On Lupin Yield, G Walton
Experimental Summaries - Plant Research
Comments on Results - New Land sites (Graphs 1, 2) - The three sites were very responsive with the point of inflexion about 600 kg/ha super rate (similar to 1972 result). The seed x super rate interaction shows the quicker response to super with higher seeding rates. Low Super Bank (800 kg/ha) (GRAPH 3) - The two sites showed very little response to super applied. On the Eradu sandplain no response to super for either Unicrop or Wheat. On the Watheroo yellow sandplain (73M015) the two lupin cultivers and the wheat gave different responses. High Super Bank (>1 OOOkg/ha) …
Mando : A Computer Program For Symbolic Manipulation Of Differential Operators Generating Continuous Transformations, David Kenneth Davison
Mando : A Computer Program For Symbolic Manipulation Of Differential Operators Generating Continuous Transformations, David Kenneth Davison
University of the Pacific Theses and Dissertations
The program MANDO efficiently performs computations involving pairs of operators, a single operator, and operators applied to functions, saving time and cost over pencil-·and-paper methods.
A versatile but compact data structure, defined under SPIT-BOL's facility for creation of datatypes, contains the operators (and functions) and provides a means for systematically referencing their relevant parts.
On input, functions and operators are written in a restricted but natural string format, for which the program can readily convert them to the internal data structure.
Central to the method of operation of the derivative routine is its ability to differentiate a function written as …
Recherches Sur Les Grégarines (Gregarinida: Stenophoridae) Du Diplopode Troglobie Typhloiulus Bureschi Verhoeff En Bulgarie, Vassil Golemansky, Dimitar Taschev
Recherches Sur Les Grégarines (Gregarinida: Stenophoridae) Du Diplopode Troglobie Typhloiulus Bureschi Verhoeff En Bulgarie, Vassil Golemansky, Dimitar Taschev
International Journal of Speleology
A study of the parasitic fauna, particularly the Gregarines, found in a troglobitic diplopod Typhloiulus bureschi Verhoeff, one of the Iulidae from Bulgarian caves is presented. Data on morphology and taxonomy of the Eugregarines are included. There is a description of a new species, Stenophora typhloiuli. This species is compared with other species of the genus Stenophora.
Trichoniscidae Della Grotta Di Su Mannau, Sardegna Sub-Occidentale (Crustacea, Isopoda), Roberto Argano
Trichoniscidae Della Grotta Di Su Mannau, Sardegna Sub-Occidentale (Crustacea, Isopoda), Roberto Argano
International Journal of Speleology
Description of three eyeless and apigmented new species of Trichoniscidae which have been found in Su Mannau cave in Sardinia. Two of them belong to the genus Catalauniscus Vandel: Catalauniscus hirundinella n.sp. offering few relationships with the spanish species C. espanoli Vandel, and Catalauniscus puddui n.sp. which has also similar features to an iberian form, C. bolivari Arcangeli. The third (Scotoniscus janas n.sp.) belongs to the endemic genus Scotoniscus Racovitza, until now monospecific and represented by a series of subspecies from the Northern Pyrenees, all nearly related to the specific form S. macromelos Racovitza. The discovery of those three …
Planning Programming Budgeting Study Of The City Of Winter Park, Alfred T. Sawicki
Planning Programming Budgeting Study Of The City Of Winter Park, Alfred T. Sawicki
Retrospective Theses and Dissertations
The report examines the applicability of Planning, Programming, and Budgeting System to the City of Winter Park. After briefly describing the character of the city, the goals are identified, the means by which they may be achieved and measure of evaluating progress toward them are given. To show how such an effort might be implemented, specific programs, objectives and effectiveness criteria are provided. These are followed by three examples in which the existing system is described and from which problems are revealed. Next, a brief analysis is performed to pinpoint the difficulty and a solution is proposed. The examples are …
Note On The Poisson Distribution, I. Adawi
Note On The Poisson Distribution, I. Adawi
Physics Faculty Research & Creative Works
No abstract provided.
Absolute Differential Elastic- And Inelastic-Scattering Cross Sections In 25-140 Kev He+ + He Collisions, Victor Pol, Walter Kauppila, John T. Park
Absolute Differential Elastic- And Inelastic-Scattering Cross Sections In 25-140 Kev He+ + He Collisions, Victor Pol, Walter Kauppila, John T. Park
Physics Faculty Research & Creative Works
Data obtained as energy-loss spectra at angles from 0 to 7.3x10-3 rad (c.m.) with typical energy-loss resolution of 0.7 eV and angular resolution of 2x10-3 rad (c.m.) were used to calculate average differential cross sections dσdΩav for elastic scattering, direct excitation of the individual He(n=2) states, and direct excitation of the He+(n=2) states. The total cross section for excitation of the He(n=2) states obtained by integrating the differential cross sections was found to be 20x10-18 cm2 at 25 keV (lab) decreasing to 7x10-18 cm2 at 140 keV. At incident lab energies below 100 keV the He(2S2) and He(2P3) states dominate …
Laser Scattering Measurements Of Droplet Growth In Binary Mixtures. Ii. H2o And Argon H2o And Helium, M. A. Viettit, Burton Schuster
Laser Scattering Measurements Of Droplet Growth In Binary Mixtures. Ii. H2o And Argon H2o And Helium, M. A. Viettit, Burton Schuster
Physics Faculty Research & Creative Works
Water droplet growth rates in a Wilson cloud chamber were measured in Ar-H2O and He-H2O media. These rates were determined in the size range 0.45-10.0 u.m by detection of oscillations in the intensity of polarized light from a He-Ne laser source scattered at 30° by the droplet population. Pressure and initial temperature were measured in the chamber for use in the computation of three droplet growth theories for comparison to experiment. Experiments were conducted in supersaturations ranging from 1.04 to 3.45.
Possible Applications Of Surface Electromagnetic Waves To Measure Absorption Coefficients, Ralph William Alexander, Robert John Bell, C. A. Ward, James Roger Weaver, I. L. Tyler, B. Fischer
Possible Applications Of Surface Electromagnetic Waves To Measure Absorption Coefficients, Ralph William Alexander, Robert John Bell, C. A. Ward, James Roger Weaver, I. L. Tyler, B. Fischer
Physics Faculty Research & Creative Works
We Show that Surface Electromagnetic Waves Can Probably Be Used to Measure the Absorption Coefficients of Materials overlaying Metals. the Proposed Experimental Method is Illustrated in the Infrared Frequency Range using Water, Teflon, and Polyethylene as Sample Materials.
Gaas Laser Experiments For The Undergraduate Laboratory, R. E. Robert, Daniel J. Jones, Kaare J. Nygaard
Gaas Laser Experiments For The Undergraduate Laboratory, R. E. Robert, Daniel J. Jones, Kaare J. Nygaard
Physics Faculty Research & Creative Works
No abstract provided.
Penning Ionization Of Zn And Cd By Noble-Gas Metastable Atoms, L. A. Riseberg, William F. Parks, Laird D. Schearer
Penning Ionization Of Zn And Cd By Noble-Gas Metastable Atoms, L. A. Riseberg, William F. Parks, Laird D. Schearer
Physics Faculty Research & Creative Works
The Penning-ionization cross sections for He, Ne, Ar, and Kr metastable atoms with Zn and Cd have been measured in a pulsed afterglow. Within the framework of existing theories we have determined those parameters which are of importance in collisions of this type. We find that our data are internally consistent if the cross sections are proportional to the cube of the "hard-sphere" radii and the effects of selection rules are included. A theoretical basis for this dependence is suggested. © 1973 The American Physical Society.
A Crystalline Fragment Of The Double Helix: The Structure Of The Dinucleoside Phosphate Guanylyl-3',5'-Cytidine, Roberta Ogilvie Day, Nadrian C. Seeman, John M. Rosenberg, Alexander Rich
A Crystalline Fragment Of The Double Helix: The Structure Of The Dinucleoside Phosphate Guanylyl-3',5'-Cytidine, Roberta Ogilvie Day, Nadrian C. Seeman, John M. Rosenberg, Alexander Rich
Chemistry Department: Faculty Publications
The sodium silt of guanylyl-3',5'-cytidine crystallizes in a monoclinic unit cell with one molecule in the asymmetric unit. Each molecule is related to another molecule by a 2-fold rotation axis which results in the formation of an antiparallel; right-handed .double helix with complementary hydrogen bonding between the guanine and cytosine residues. The crystal is heavily hydrated with 36 water molecules in the unit cell. The geometry of this crystalline double helix is. very similar to those which have been derived from studies of fiber x-ray diffraction patterns of double-stranded RNA; even though the latter do not yield data at atomic …
On The Effect Of Cesium In Photoionization Laser Plasmas, Kaare J. Nygaard
On The Effect Of Cesium In Photoionization Laser Plasmas, Kaare J. Nygaard
Physics Faculty Research & Creative Works
A number of photoionization mechanisms and how they can be used to generate large-volume laser plasmas are discussed. Reaction rates for two-step photoionization of the cesium atoms as well as formation of molecular ions (Cs2+) are estimated. The necessary cross-section data were obtained from related research in thermionic energy converters. © 1973, IEEE. All rights reserved.