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La Colonisation De Quelques Grottes Du Jura Par Niphadobota Alpina Bezzi (Dipt. Tipulidae), M. J. Turquin

International Journal of Speleology

Three new localities of Niphadobota (=Chionea) alpina in the French southern Jura allow the author to state that this insect’s climatic requirements explain the biogeography of the species; the origin of the colonization of caves by this dipteran is considered.

Biotope Et Description De Niphargus Altagahizi N. Sp., Amphipode Gammaridé Souterrain Du Liban, N. Alouf

International Journal of Speleology

Description of a small warm cave situated along the Mediterranean shore; the temperature of water varies from 14 to 19°C. Inhabiting this cave is Niphargus altagahizi, a new species related to orcinus s.l. group. Description of this species and comparison with the other Lebanese species, N. nadarini.

Beobachtungen An Markierten Und Unmarkierten Köcherfliegen (Trichoptera) In Der Bärenhöhle Im Lonetal (Schwäbischer Jura), Klaus Dobat

International Journal of Speleology

1.The Bärenhöhle, one of the ten caves situated in the episodically water-bearing valley of the Lone (Swabian Jura), serves as summer quarters for the total of ten species of Trichoptera, most of which are Micropterna nycterobia and Stenophylax permistus. 2.Counts carried out in this cave from 1967-1972 and observations of flood and dry-periods of the Lone during the same years make evident that the number of Trichoptera flying into the cave seems to depend in a large measure on the seasonal activity of the creek: a steady flow of water makes the undisturbed development of larvae possible and results …

Temperature Preference Responses Of Some Aquatic, Cave-Adapted Crustaceans From Central Texas And Northeastern México, William R. Elliott, Robert W. Mitchell

International Journal of Speleology

The temperature preference responses of five species of troglobite crustaceans were studied in a 15°-30°C gradient. Stygonectes hadenoecus, S. russelli and Asellus reddelli had no discernible temperature preferenda. Speocirolana bolivari had a weak preference for 20-30°C. Cirolanides texensis had a pronounced preference for 20-30°C, temperatures much warmer than that of its habitat. The lack of temperature preferenda in three species agrees with the hypothesis that imprisoned troglobites tend to lose responses to those environmental variables which are constant in caves. S. bolivari may retain its temperature selectivity because of a slow rate of cave-adaptation. It is hypothised that C. …

A New Troglobitic Isopod Of The Genus Lirceus (Asellidae) From Southwestern Virginia, With Notes On Its Ecology And Additional Cave Records For The Genus In The Appalachians, John R. Holsinger, Thomas E. Bowman

International Journal of Speleology

Lirceus usdagalun new species, the first known troglobitic species of the genus, is described from three caves in Lee County, Virginia. The potential taxonomic value of the endopod tip of the male second pleopod, heretofore dismissed as a diagnostic character in this genus, is pointed out. Some general ecological data for the new species are presented, and cave records for other populations of Lirceus spp. from the Appalachians are given.

Xlix Contribution To The Knowledge Of The Amphipoda. On Three Niphargus Species (Fam. Gammaridae) From The Balkans, Gordan S. Karaman

International Journal of Speleology

Three Niphargus species from the Balkans are studied. Niphargus adbiptus, n. sp. is described from Ravanica cave in Serbia. Niphargus stygius ravanicanus S. Kar. 1943 from the same cave (Ravanica) is redescribed. N. valachicus Dobr. Man. 1933, is newly recorded from Bulgaria (Devnja).

Breeding And Fecundity In A Subterranean Mysid, Lepidomysis Longipes (Pillai And Mariamma), C. N. Nath

International Journal of Speleology

The hypogean mysid, Lepidomysis longipes has a breeding period extending from December to April with the peak period in March. A secondary breeding period appears in August and September. The females have low fecundity and carry a maximum of nine eggs. Development is delayed due to lack of nourishment in the environment. The mysids breed only once a year.

The Evolution Of The Eastern North American Isopods Of The Genus Asellus (Crustacea: Asellidae) Part Ii, Laurence E. Fleming

International Journal of Speleology

This paper is the second in the three part series dealing with the evolution of the North American isopods of the genus Asellus. The generic status of Asellus is discussed with emphasis placed on the newly proposed genera of Henry and Magniez (1968). Use is made of comparative anatomical and where feasible statistical methods during this investigation. The first, shorter portion of the study deals with the presentation of evidence supporting the viewpoint that if "Pseudobaicalasellus” is to be considered a valid genus then it must include the members of the Cannulus Group of Steeves (1965). The …

Aspetti Ecologici Ed Evolutivi Del Popolamento Di Grotte Temperate E Tropicali: Osservazioni Sul Ciclo Biologico Di Alcune Specie Di Ptomaphagus (Coleoptera Catopidae), Valerio Sbordoni, Marina Cobolli-Sbordoni

International Journal of Speleology

Differences between tropical and temperate cave communities are an important topic in the actual biospeleological thinking. Among the most striking differences is the paucity of terrestrial troglobites in tropical caves. This fact may depend on the higher energy input into tropical caves which lessens the selection pressures for energy-economizing troglobite adaptations. Consequently evolutionary rates would be slowed in tropical caves and, in a date group, troglobites would appear later in such caves than in temperate ones with lower energy input. In order to investigate this point the authors studied the degree of adaptation to the cave environment in two species …

The Effect Of Organic Solvents On The Sensitivity Of Rare Earths Atomic Absorption, Keith A. Geiken

Dissertations and Theses @ UNI

Atomic absorption of the rare earths erbium, europium, and dysprosium was studied in 10% organic solvent-water systems, water miscible solvent-water systems, and in 100% solvent solutions of the metal acetylacetonates. Sensitivity was found to depend on the solvent system used and instrument parameters. All solvent systems used enhanced absorption, with (1) higher number of carbon atoms, (2) tertiary and secondary alcohols, and (3) high boiling point solvents producing the largest increase in absorption. No significant viscosity relationships existed in the 10% solvent-water systems for either miscible or partially soluble solvents; however, viscosity might have been a factor in absorption in …

Xanthine Oxidase Catalyzed Oxidation Of Acetaldehyde Substrate And Carboxylate Inhibition, Patrick A. Goodman

All Master's Theses

In recent years, interest in an enzyme which catalyzes the oxidation of a variety of aldehydes and purines has been growing steadily. In fact, this enzyme commonly known as xanthine oxidase, has been implicated by some (1) in the regulation of nucleic acid synthesis and cellular growth - an important consideration in the study of caner. Unfortunately, detailed investigations directly pertaining to biological aspects of this enzyme have as yet been somewhat limited. Nevertheless, the amount of information concerning the nature of the enzyme and its catalytic effects upon different classes of substrates, through far from complete, is indeed significant.

Cadmium In Kittitas County Soils, Don G. Muller

All Master's Theses

This paper deals with a survey of soil cadmium concentrations in Kittitas County, Washington, using atomic absorption spectrophotometry as the analytical method. The purpose of the survey was to establish, in an area relatively free from cadmium contamination, background levels for a wide variety of soil conditions. The results showed cadmium concentrations ranging from amounts below the detection limit in remote areas to 2.58ppm in cultivated, inhabited areas, with an overall average concentration of 0.12 ppm cadmium

Biometrics Of Bilateral Symmetry In Plants., T. Davis Dr.

Doctoral Theses

During the past ten deendes, observation rolating to ayune try, asymmatry, dis-oyame try, radlal symmetry, rotatiÉ”nal Bymne try, bilateral aymme try and ambidextry in the fields of bo tany, Boology, geology, chemiatry, eryatellography, physics, astronomy, engineering, mathematics, sunio, poetry and art vere recorded by various scientists. The prevent treatise is a sua- mary of an elaborato study on bilaterai syame try or microrinage symse try occurring in vari us plant organs. Unlike moet of the earlior reports, the problem here has been takled unified on a quantitative basis, thereby ereating situations where sophisti-cated techniques of statietios could be effectively employed. …

Ua66/7/2 Newsletter, Wku Chemistry

WKU Administration Documents

Newsletter created by and about the WKU Chemistry department.

Acidities In Ethanol/Water Solvents: The Pka Of Hf, Raymond M. Merrill

Chemistry and Chemical Biology ETDs

The acidity of hydrofluoric acid in mixed ethanol/ water solvent systems was studied by determining the pKa of HF in a number of different ethanol concentrations. The effect of changing temperature on the acidity of HF in these media was also examined. The pKa's were determined using a lanthanum fluoride membrane Fluoride Specific Ion Electrode and a glass pH electrode versus the same reference electrode. The method eliminates the need to determine liquid junction potentials. By determining the pKa for HF in each ethanol/water mixture, at a number of different temperatures, thermodynamic parameters, such as free energy, enthalpy, entropy, and …

The Prairie Naturalist Volume 4, Nos. 3 And 4. September–December 1972

The Prairie Naturalist

THE SANDHILL CRANE WITH EMPHASIS ON ASPECTS

RELATED TO NORTH DAKOTA ▪ Douglas H. Johnson and Robert E. Stewart

SIZE AND COLORATION CHARACTERISTICS OF NEOTENIC SALAMANDERS IN DEVILS LAKE, N. D. ▪ Douglas W. Larson

BIRDS' EGGS: AN AID TO NATURE APPRECIATION ▪ S. O. Kolstoe

BIRD MORTALITY AT FOUR TOWERS IN EASTERN NORTH DAKOTA — FALL 1972 ▪ Michael Avery and Tom Clement

POPULATION IRRUPTION OF THE LEAST WEASEL (Mustela nivalis) IN EAST CENTRAL NORTH DAKOTA ▪ John T. Lokemoen and Kenneth F. Higgins

Stochastic Integro-Differential Equations Of Volterra Type, William J. Padgett, Chris P. Tsokos

Faculty Publications

No abstract provided.

On Improved Wkb (Uniform Asymptotic) Quantum Conditions, Dunham Corrections, The Langer Modification, And Rkr Potentials, Russell T. Pack

Faculty Publications

An improvement to the WKB quantum condition for the rotation-vibration levels of diatomic molecules, known empirically to give RKR potentials of increased accuracy and to account for the Dunham correction Y00, is derived using uniform asymptotic methods. The role of the Langer transformation in this problem is also discussed.

Irradiation Equivalence, Robert Katz, S. C. Sharma, M. Homayoonfar

Robert Katz Publications

Recent analyses of track structure show that the parameters describing a radiation field are not separable from those describing a detecting system; that is, it is impossible to write an expression describing the effect of irradiation as a product of 2 factors, one of which contains only parameters describing the detecting system, while the other contains parameters describing only the radiation field. From this perspective it is difficult to understand the use of a “quality factor,” applicable to all biological substances and given as a function of the “effective LET,” for the conversion of rads to rems. One cannot define, …

Water Resources News, Volume 4, No. 9, November 1972

Water Current Newsletter

Conference Proceedings Available
Assistance Grants for Nebraska
Niobrara, Nebraska - Moving
Congress Heaps CEQ Report
Bureau Studies Saline Water
New Administrative Regions for USGS
Unfair Attacks on Pesticide Pollution
Numerical Designation of Bureau Regional Offices Obsolete
Water Pollution Control Measure Becomes Law
Gavins Point Dam
Water Dollars Down the Drain
Federal Pollution Laws
New Food Industry Uses Heated Water
War Between the Worlds
Waste Discharge Exceptions Banned
National Water Commission Report

The Howard University Reviews Of Science, Vol 1 No 3, Department Of Physics

Physics Faculty Publications

No abstract provided.

Press Reports, Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.

Water Resources News, Volume 4, No. 8, October 1972

Water Current Newsletter

Updated Version of Proposed Regulations Now Available
EPA Issues New Application Form for Submission of Grant Proposals
Reclamation and Reuse of Solids and Wastes
Fall Meeting of Nebraska Section of AWRA
Technology Transfer Conference
OWRR Director Resigns
Requested Delay in Big Blue Plan
Missouri River Waterfront
Missouri River Basin Commission Notes
Missouri River Money Hurdle
Fish Tale
Water Pollution Veto Overturned
OWRR Priorities for Fiscal 1974

Phytoplankton Successions And Lake Dynamics In Las Vegas Bay, Lake Mead, Nevada, Ervon R. Koening, Richard W. Tew, James E. Deacon

Publications (WR)

Phytoplankton successions, applications of the general growth equation, and physical measurements have been employed to investigate events occurring at the interface between industrial and sewage effluent contained in Las Vegas Wash and the waters of Lake Mead, Nevada. The data indicate that the entering waters tend to form a density current interrupted at intervals by dynamic effects generated in the lake. The dynamic relationships described here for the spring months suggest that a much more thorough understanding of physical, chemical and biological interactions is necessary to permit solution of the numerous problems of Las Vegas Bay discussed or alluded to …

Terminal Talk - The Wofford Connection - September 1972, Wofford College Computer Center

Terminal Talk

No abstract provided.

Water Resources News, Volume 4, No. 7, September 1972

Water Current Newsletter

North Loup Project Approved
NWC Endorses Cost-Sharing for All Federal Water Resource Projects
Tuition for Training Courses Imposed by EPA
Water Problems Emphasized by EPA
Environmental Protection Agreement Signed by US-USSR
Hazards Linked with Large-Scale Water Developments
NWC Recommends Enactment of Waterway User Charges
Refuse for Recreational Grounds
Water Development and Population Dispersal
Engineering Short Course
Rare Breed of Fish May Get Dam For Home
World Record Flow Measured on Amazon
Dam Inspection Bill Signed by President
Flood Insurance
Characteristics of Water Resources Research Centers
Drinking Water Legislation

A Preliminary Bibliography And Lake Index Of The Inland Mineral Waters Of The World, D. B. Mccarraher

Nebraska Game and Parks Commission: Staff Research Publications

This preliminary- bibliography and lake index has been prepared by the author on the basis of information available in the Office of Limnology, Hastings College, Nebraska. Although all source material available there has been searched, it is recognized that many papers, especially those published in regional languages may have been left out. Readers are requested to point out such omissions and any inaccuracies that require correction.

This preliminary bibliography will be circulated among specialists in the subject for corrections to the citations and for suggested additions to the list. It is planned that the paper will then be revised to …

The Relation Between Soil Characteristics, Water Movement And Nitrate Contamination Of Ground Water, Grant W. Thomas, Matthew Mcmahon

KWRRI Research Reports

Soils from several areas in Kentucky were placed in columns and leached with Ca(NO₃)₂. Subsoils high in iron oxide were found to retard the leaching of nitrate very significantly. In other soils, the nitrate moved through as fast as or slightly faster than the water.

Field application of nitrogen to corn was most efficient when done in the spring or summer near the time that the corn takes it up. The one exception to this was a red soil, where fall application of nitrogen resulted in little loss due to the retarding effect mentioned in the …

A Mathmatical Model Of Primary Productivity And Limnological Patterns In Lake Mead, Lorne G. Everett

Publications (WR)

The temporal and spatial changes in chemical and biological properties of Lake Mead have been investigated, thereby indicating the sources of water pollution and the time of highest pollution potential. Planktonic organisms have been shown to indicate the presence of water problems. Macro- and micro-nutrient analyses have shown that primary productivity is not inhibited by limiting concentrations. A mathematical model has been developed, tested with one set of independent data, and shown worthy of management utility. Although the model works very well for the Lake Mead area, the physical reality of the Multiple Linear Regression equation should be tested on …

Principles Of Control Theory As Applied To A Thermostat, Joseph Peter Stidham

Master's Theses

The recent development of solid state electronics has opened new possibilities in instrumentation design. One development has been the availability of compact, low cost, high gain, D. C. amplifiers which can be used in the design and construction of sensitive laboratory instruments (11). Using these amplifiers a thermostat capable of precise control can be constructed and its performance compared with the performance expected by an analysis of the closed loop control equations.