Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons™

Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 38761 - 38790 of 39423

Full-Text Articles in Life Sciences

Ua77/1 Western Alumnus, Vol. 40, No. 2, Wku Alumni Relations Oct 1971

Ua77/1 Western Alumnus, Vol. 40, No. 2, Wku Alumni Relations

WKU Administration Documents

Quarterly magazine created for WKU alumni. Regular features are Hilltopics, Sports, Alumni Newsgrams and Notes and In Memoriam. This issue includes:

  • Graduate School (College) is On Its Way
  • Evening Class is Thataway
  • The Hilltopper Hundred to the Rescue
  • ETV - Keep Watching, It's All in Color
  • Student Interns Learn How Government Works
  • Significant Statements: The New Year Begins
  • Good News for Fishermen: Reservoir Research
  • There it Was! Your Homecoming - 1971
  • Performing Arts Illuminate the Campus Scene
  • Discovery 1 - Uncovering the Kentucky of Antiquity
  • Discovery 2 - Reviving the Heritage of Kentucky
  • Discovery 3 - The Intercultural Studies Program …


A Preliminary Ecological Study Of Areas To Be Impounded In The Salt River Basin Of Kentucky, Louis A. Krumholz, Stuart E. Neff, Edmond J. Bacon, Jerry S. Parsons, John D. Woodling Oct 1971

A Preliminary Ecological Study Of Areas To Be Impounded In The Salt River Basin Of Kentucky, Louis A. Krumholz, Stuart E. Neff, Edmond J. Bacon, Jerry S. Parsons, John D. Woodling

KWRRI Research Reports

This report includes work that is an extension of Project No. B-005-KY as reported in Research Report No. 43 of the University of Kentucky Water Resources Institute. That project was initiated in April 1968 as Project No. A-019-KY with principal emphasis on physical, chemical, and biological characteristics of the main stem of the Salt River upstream from the proposed damsite for Taylorsville Lake, an impoundment of about 3, 600 acres at seasonal pool. The report includes descriptions of an additional 13 stations along the stream, bringing to 38 the number of permanent collecting sites.

Values for dissolved oxygen ranged from …


The Ias Bulletin, V5n5, September 1971, Iowa Academy Of Science Sep 1971

The Ias Bulletin, V5n5, September 1971, Iowa Academy Of Science

IAS Bulletin

In this issue:

--- Officers, Directors, and Section Chairmen, 1971-72
--- Proceedings Progress
--- Business Manager for Proceedings Appointed
--- Submit Manuscripts for Proceedings at Any Time
--- Iowa Science Teachers Journal Will Have Limited Distribution
--- Staff Changes at Drake Involve Academy "Activists"
--- Status of the Iowa State Preserves Advisory Board Uncertain
--- Darling Foundation Issues Catalog of Conversation Education Facilities
--- Are you a Member of AAAS?
--- AAAS Research Grants Awarded
--- AAAS Governance Changes Being Proposed
--- Guide to Upper Iowa River Published By George Knudson of Luther College
--- AAPT-Iowa Section
--- Student Programs …


A Preliminary Ecological Study Of Areas To Be Impounded In The Salt River Basin Of Kentucky, Louis A. Krumholz Sep 1971

A Preliminary Ecological Study Of Areas To Be Impounded In The Salt River Basin Of Kentucky, Louis A. Krumholz

KWRRI Research Reports

This report covers work that is an extension of Project No. A-019-KY. A series of 25 sampling stations was established in the mainstream and tributaries of the Salt River that extend from the source of the stream in Boyle County to a few miles below the site of Taylorsville Darn in Spencer County. Sampling for water chemistry and biota was carried out semimonthly. Data on temperature, oxygen, depth, and discharge, along with analyses for cations (Ca, Mg, Fe, Mn) and anions (PO4, NO3, NO2, CO3, HCO3) have been accumulated and …


An Extension Of The Cochran Q Test, Soo-Young Cho Aug 1971

An Extension Of The Cochran Q Test, Soo-Young Cho

Loma Linda University Electronic Theses, Dissertations & Projects

The familiar x 2 test is ordinarily used to compare percentage distributions of categorical data for two or more independent samples. A more accurate com parison of the percentages is sometimes obtained if the samples consist of matched individuals. The NcNemar test is generally used when comparing only two related samples. Where there are three or more samples the Cochran Q test is used. Both of these tests apply only to the case of dichotomized responses. This thesis extends the Cochran Q test to the case where the responses are multinomial. A generalized statistic corresponding to Cochran's result is obtained. …


Phytoplankton Composition At Lake Drummond In The Dismal Swamp, Virginia, William Howard Poore Jr. Jul 1971

Phytoplankton Composition At Lake Drummond In The Dismal Swamp, Virginia, William Howard Poore Jr.

Biological Sciences Theses & Dissertations

Abstract unavailable.


The Prairie Naturalist Volume 3, No.2. June, 1971 Jun 1971

The Prairie Naturalist Volume 3, No.2. June, 1971

The Prairie Naturalist

EDITORIAL: Environmental Rights ▪ Paul B. Kannowski

RIVER BASINS PLANNING ▪ H. A. Hendrickson

WATER RESOURCE PLANNING GONE AMUCK ▪ Charles H. Stoddard

THE INTERACTION OF CITIZENS' GROUPS AND GOVERNMENT AGENCIES WITH RESPECT TO ENVIRONMENTAL PROBLEMS ▪ Robert L. Burgess

WORDS AND MEANINGS ▪ Paul T. Crary

ENFORCEMENT OF NORTH DAKOTA ENVIRONMENTAL LAWS AND REGULATIONS ▪ Robert E. Beck

BIRDS OBSERVED IN NORTH DAKOTA DURING THE WINTER OF 1970-71 ▪ John T. Lokemoen and Paul E. Springer

STATUS OF CLARK'S NUTCRACKER IN NORTH DAKOTA ▪ Lewis W. Oring and Robert W. Seabloom

WINGED ANTS AS FISH FOOD ▪ Charles H. …


The Ias Bulletin, V5n3, May 1971, Iowa Academy Of Science May 1971

The Ias Bulletin, V5n3, May 1971, Iowa Academy Of Science

IAS Bulletin

In this issue:

--- Officers, Directors, and Section Chairmen, 1971-72
--- Election Results
--- Attendance at 83rd Session
--- Membership at all Time High
--- Section Interests Among Academy Members
--- Visiting Scientist Program Dead
--- Iowa Science Teachers Journal to be Distributed Only as Requested
--- Social Implications Committee Selects Single Concern for its Attention
--- Important Recommendations from the Academy's Committee on Governmental Cooperation and Assistance
--- Academy Farm Operating Under New Policies
--- Student Programs to be Evaluated
--- Recognition and Awards
--- Explanation of Election Ballot with Signature Space
--- Two Junior Academy Members to Represent …


Spawning And Early Life History Of Largemouth Bass (Micropterus Salmoides) In Wahweap Bay, Lake Powell, Kent D. Miller May 1971

Spawning And Early Life History Of Largemouth Bass (Micropterus Salmoides) In Wahweap Bay, Lake Powell, Kent D. Miller

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Spawning time and habitat of largemouth bass, survival of embryos, and growth and food habits of fingerlings were studied in 1968 and 1969 at Wahweap Bay, Lake Powell. Spawning began in mid- to late-April, when mean daily water temperature at nesting depths was 14.4-15.0 Centigrade (58-59 Fahreheit), and continued until mid-June. Most spawning took place on the northeast shore of the bay. Sandstone rubble was the most commonly used bottom type for nesting, either at the base of ledges or around large sandstone boulders. Mean nest depth increased from 1.63 meter to 4.54 meters (5.36 feet to 14.90 feet) in …


Growing Season Air-Soil Temperature Relationships At Lincoln, Nebraska, Ralph E. Neild May 1971

Growing Season Air-Soil Temperature Relationships At Lincoln, Nebraska, Ralph E. Neild

Nebraska Agricultural Experiment Station: Historical Research Bulletins

This study concerns the use of weekly average air temperature for predicting weekly average soil temperature under different conditions of surface cover during different times of year. Probabilities of weekly average air temperature for Lincoln as well as other Nebraska locations are available. These probabilities and the soil temperature prediction equations may be used in determining expected soil temperatures.


A Revision Of The Feather Mite Genus Brephosceles (Proctophyllodidae: Alloptinae), Paul C. Peterson May 1971

A Revision Of The Feather Mite Genus Brephosceles (Proctophyllodidae: Alloptinae), Paul C. Peterson

Bulletin of the University of Nebraska State Museum (1924–2023)

A systematic revision is presented for the genus Brephosceles. Data on external morphology, zoogeography, and host-parasite relationships are included. Thirteen named and thirty new species are recognized and described. The new species and the type hosts are: Brephosceles afribycis, from Afribyx lateralis (Charadriidae); B. anhimae, from Anhima cornuta (Anhimidae); B. belonopteri, from Belonopterus chilensis cayennensis (Charadriidae); B. bilobatus, from Puffinus puffinus (Procellariidae); B. chilensis, from Belonopterus chilensis lampronotus (Charadriidae); B. collaracus, from Charadrius collaris (Charadriidae); B. constrictus, from Charadrius bicinctus (Charadriidae); B. diomedei, from Diomedea chrysostoma (Diomedeidae); B. discidicus, from Cygnus bewickii (Anatidae); B. disjunctus, from Pterodroma leucoptera hypoleuca (Procellariidae); …


Influence Of Temperature Of Incubation And Type Of Growth Medium On Pigmentation In Serratia Marcescens, Robert P. Williams, Cora L. Gott, S M. Qadri, Randolph H. Scott May 1971

Influence Of Temperature Of Incubation And Type Of Growth Medium On Pigmentation In Serratia Marcescens, Robert P. Williams, Cora L. Gott, S M. Qadri, Randolph H. Scott

Faculty, Staff and Student Publications

Maximal amounts of prodigiosin were synthesized in either minimal or complete medium after incubation of cultures at 27 C for 7 days. Biosynthesis of prodigiosin began earlier and the range of temperature for formation was greater in complete medium. No prodigiosin was formed in either medium when cultures were incubated at 38 C; however, after a shift to 27 C, pigmentation ensued, provided the period of incubation at 38 C was not longer than 36 hr for minimal medium or 48 hr for complete medium. Washed, nonpigmented cells grown in either medium at 38 C for 72 hr could synthesize …


83rd Session Of The Iowa Academy Of Science, April 23-24, 1971, Iowa Academy Of Science Apr 1971

83rd Session Of The Iowa Academy Of Science, April 23-24, 1971, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.


A Conceptual Draft Of A Dynamic Hydro-Biological Model For Lake Mead, L. G. Everett, Bureau Of Reclamation Apr 1971

A Conceptual Draft Of A Dynamic Hydro-Biological Model For Lake Mead, L. G. Everett, Bureau Of Reclamation

Publications (WR)

Food and energy transformation in an aquatic system must be understood in order to develop a simulation approach. This report provides a comprehensive study of an aquatic ecosystem. The objectives of this report are to show: (1) the biological relationships in an aquatic system (2) the role of nutrients in the biological cycle (3) the role of abiotic factors in a limnetic environment (4) the status of the art of "Eutrophication modeling".


A Generic Revision Of The Pterodedinae, A New Subfamily Of Feather Mites (Sarcoptiformes: Analgoidea), Chong K. Park, Warren T. Atyeo Mar 1971

A Generic Revision Of The Pterodedinae, A New Subfamily Of Feather Mites (Sarcoptiformes: Analgoidea), Chong K. Park, Warren T. Atyeo

Bulletin of the University of Nebraska State Museum (1924–2023)

The generic rev1s1on of the Pterodectinae, new subfamily of the Proctophyllodidae, is based on 88 named and over 160 new species. Included are morphology, host-parasite relationships, diagnoses of four named and eight new genera, and illustrations of each type species. The named genera are:

Anisodiscus Gaud and Mouchet, 1957; Montesauria Oudemans, 1905; Proterothrix Gaud, 1968; Pterodectes Robin, 1877. The new genera and their type species are: Dolichodectes, Proctophyllodes (Pterocolus) edwardsi Trouessart, 1885; Megalodectes, Proctophyllodes (Pterodectes) major Trouessart, 1885; Neodectes, Proctophyl/odes (Pterodectes) securiclatus Trouessart and Neumann, 1888; Pedanodectes, Pterodectes hologaster Gaud, 1953; Syntomodectes, Proctophyllodes (Pterodectes) selenurus Trouessart, 1885; Toxerodectes, Pterodectes gladiger …


The Prairie Naturalist Volume 3, No.1 March, 1971 Mar 1971

The Prairie Naturalist Volume 3, No.1 March, 1971

The Prairie Naturalist

EDITORIAL: One House for Natural Resource Management ▪ Paul B. Kannowski

CHECKLIST OF BIRDS IN NORTH DAKOTA ▪ Robert E. Stewart

ADDITIONAL INFORMATION ON THE WOOD DUCK IN NORTH DAKOTA ▪ Edmund A. Hibbard

NOTES ON DANDELIONS ▪ O. A. Stevens

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA—1970 ▪ Robert N. Randall

THE EROSION OF ONE OF MAN'S MOST PRECIOUS NATURAL RESOURCES: HIS FREEDOM OF CHOICE ▪ Gordon L. Iseminger

NOTEWORTHY PLANTS OF THE NORTH DAKOTA PRAIRIE COTEAU FOREST ▪ W. Carter Johnson

NOTE — Duck mortality caused by wind ▪ Harold Kantrud


Don't Crop Areas Liable To Waterlogging, Department Of Agriculture, Western Australia Jan 1971

Don't Crop Areas Liable To Waterlogging, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

The increasing areas of crops being sown in high rainfall districts make it likely that many crcp areas include sections liable to severe waterlogging.

This report presents results of a 1970 trial which clearly show that sowing such sections is not economic.


Investigations On The Gray Snapper, Lutjanus Griseus, Walter A. Starck Ii, Robert E. Schroeder Jan 1971

Investigations On The Gray Snapper, Lutjanus Griseus, Walter A. Starck Ii, Robert E. Schroeder

Studies in Tropical Oceanography

No abstract provided.


Simplified Sheep Skin Tanning, Department Of Agriculture, Western Australia Jan 1971

Simplified Sheep Skin Tanning, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

Most people would agree that a white sheepskin rug adds a touch of luxury to any home.

The following method will produce dressed, woolly sheep skins with chemicals and equipment available to any householder.


Grain Sorghum In The Ord Valley : Three Crops A Year?, P J. May Jan 1971

Grain Sorghum In The Ord Valley : Three Crops A Year?, P J. May

Journal of the Department of Agriculture, Western Australia, Series 4

High temperatures and ample irrigation water allow grain sorghum to be grown throughout the year on the Ord River Irrigation Area, and observations in 1969-70 indicated that it may be possible in this area to produce three crops in one year from one planting, by ratoon cropping.

This article describes the technique and discusses its possibilities on the Ord.

The sorghum midge, one of the worst pests of sorghum, could well make ratoon cropping impossible, but the midge has not yet been seen in this area.


Impoundment Effects On Water Quality As Reflected In Parasitism Of Reservoir Basses, David A. Becker Jan 1971

Impoundment Effects On Water Quality As Reflected In Parasitism Of Reservoir Basses, David A. Becker

Arkansas Water Resources Center Technical Reports

Our aquatic environments are rapidly becoming useless as natural resources through pollution from various sources. It is therefore necessary for us to further understand the various means which relate to this process. The interrelationships between the physico-chemical and biological water qualities undergo marked changes during the ageing of a reservoir. Eutrophication of these impoundments render them rela-tively useless as natural resources. It thus becomes apparent that we must gain further knowledge of these processes if we are to devise methods for proper reservoir management.


Fisheries Report No 9 - The Fauna And Flora Of Monte Bello Islands, A. A. Burbidge Dr Jan 1971

Fisheries Report No 9 - The Fauna And Flora Of Monte Bello Islands, A. A. Burbidge Dr

Fisheries Research Reports

Two visits were made to the Monte Bello Islands in 1970 and 1971.

The aim of the visits was to examine the islands for the presence of native mammals and other fauna, and to explore the possibility of re-establishing fauna now extinct,

The first survey was carried out in conjunction with a more detailed examination of the Dampier Archipelago. The fisheries patrols vessel "Dampier" was used to reach the islands and as a base. Personnel were R. Johnstone (W.A. Museum), E.J. Little and J.D. Harman (crew of the "Dampier"), R.F. Dear and A.A, Burbidge, all from the Department of Fisheries …


Fisheries Report No Vii (7) - Results Of A Biological Survey Of The Millstream Area, A. A. Burbidge Dr Jan 1971

Fisheries Report No Vii (7) - Results Of A Biological Survey Of The Millstream Area, A. A. Burbidge Dr

Fisheries Research Reports

Millstream has long been recognised as an unique and outstanding area, both scenically and from a biological aspect. The area of prime interest consists of a series of deep pools in the bed of the Fortescue River (about 15 miles long including Gregory Gorge) and the springs and streams which feed them. Most of the springs are in the sides of the river bed but one of the largest is about 1% miles to the south. This feeds a swift flowing stream running north into the river bed.

The first Europeans to see the area were the exploring party led …


Aphids Of Curlew Valley, George F. Knowlton Jan 1971

Aphids Of Curlew Valley, George F. Knowlton

Memorandum

No abstract provided.


Correspondence On Home Range Determination For Small Mammals, F.B. Turner, R.D. Anderson, D.F. Balph Jan 1971

Correspondence On Home Range Determination For Small Mammals, F.B. Turner, R.D. Anderson, D.F. Balph

Memorandum

No abstract provided.


Tree Establishment In The Wheatbelt, F Batini Jan 1971

Tree Establishment In The Wheatbelt, F Batini

Journal of the Department of Agriculture, Western Australia, Series 4

Although most of the Forests Department's activity has centred around the State Forests in the higher rainfall areas, the Department has, for many years, encouraged the planting and conservation of trees throughout the farming areas.


Growing Plants With Salty Water, C V. Malcolm, S. T. Smith Jan 1971

Growing Plants With Salty Water, C V. Malcolm, S. T. Smith

Journal of the Department of Agriculture, Western Australia, Series 4

LACK of good quality water in many parts of Western Australia often forces people to use salty water for irrigation and gardening.

This article gives some hints on how to reduce salt damage to plants when salty water must be used for irrigation or gardening.

It includes a table of plants which may be irrigated with water of varying degrees of salinity and lists precautions which should be taken for each group.


New Varieties Could Extend The Peach Canning Season, S R J Newton Jan 1971

New Varieties Could Extend The Peach Canning Season, S R J Newton

Journal of the Department of Agriculture, Western Australia, Series 4

THE peach canning industry in Western Australia at present has only a limited period of operation, coinciding with the harvest time of the major variety, Golden Queen.

New canning peach varieties tested at Stoneville Research Station could be used to extend the harvest period of canning peaches beyond that of the present standard variety, Golden Queen.

This would have obvious advantages for growers and a canning industry.

The South African variety Keimoes was the most promising canning peach tested. Tests on other varieties are continuing.


Trickle Irrigation, B Swan Jan 1971

Trickle Irrigation, B Swan

Journal of the Department of Agriculture, Western Australia, Series 4

THE introduction of trickle irrigation has caused tremendous interest among commercial irrigators. While not a new concept, its application was formerly restricted to glasshouse and nursery use.


Sprinkler Irrigation In Windy Conditions, K S. Cole, G. C. Brown Jan 1971

Sprinkler Irrigation In Windy Conditions, K S. Cole, G. C. Brown

Journal of the Department of Agriculture, Western Australia, Series 4

THOSE summer winds—be they cooling afternoon breezes or scorching easterlies—are no help to the irrigationist.

Where sprinklers are used wind can result in uneven irrigation, reduced yields and spoilt produce.