Physical Sciences and Mathematics Commons^™

Test 938: John Deere 2020 Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 945: David Brown 770 Selectamatic (Diesel), Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT

GENERAL CONDITIONS

East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers.

PREPARATION FOR PERFORMANCE RUNS

The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …

Test 935: John Deere 1020 Gas, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 943: Oliver 1550 Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 933: Ford 5000 Select-O-Speed (Gasoline), Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT

GENERAL CONDITIONS

East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers.

PREPARATION FOR PERFORMANCE RUNS

The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …

Spin-Resonance Transitions Of Free Radicals In The Zeeman Region, Juana Vivó Acrivos

Juana Vivó Acrivos

No abstract provided.

Mobility And Behavior Of Raccoons In Eastern South Dakota, George L. Geis

Electronic Theses and Dissertations

Introduction: Increasing populations of raccoons (Procyon lotor) and reports of depredation on upland game, poultry, and garden crops indicated a need for research concerning behavior, mobility, and range of raccoons. The raccoon has seemingly adapted to the dry environment of the northern agricultural plains. According to records, the original range apparently did not extend into South Dakota. Lewis and Clark did not report raccoons when they traveled along the Missouri River in 1804 and 1806 (Coues, 1893). Although Visher (1918) noted that raccoons were not rare in wooded areas along streams in western South Dakota, he made no mention of …

Discrimination In Housing In Utah, Utah State Advisory Committee

Elusive Documents

No abstract provided.

Utah: A Guide For Teaching Social Studies, Fourth Grade, Della W. Mcclellan, Floyd Sucher

Elusive Documents

No abstract provided.

Population Distribution And Mobility Of Deer In Eastern South Dakota, Rollin De Mers Sparrowe

Electronic Theses and Dissertations

Population distribution and mobility of deer were studied intensively along a 15-mile stretch of the Big Sioux River, and less intensively on an expanse of 1400 square miles in central eastern South Dakota. Objectives were to determine relative population numbers and distribution of deer, the extent of their daily and seasonal movements, and the principal factors influencing these populations and movements, and to test winter hard counts as a population index. Deer were captured in Clover traps or with a Cap-Chur gun and were marked individually with ear tags, ear streamers, and collars. Some deer were tracked by radio telemetry. …

Limnology Of Three Farm Ponds In South-Central South Dakota, Larry Kim Graham

Electronic Theses and Dissertations

Physical, chemical, and biological aspects of three farm ponds in south-central South Dakota were studied from June 1964 until December 1965. Maximum water temperature at the surface reached 25.2 C, while water temperatures at the bottom of the ponds were about 2 to 4C lower than the surface. Light transmission was influenced by turbidity but generally penetrated to the bottom of the ponds except during periods of cloudy ice and snow cover. Dissolved oxygen was near saturation during periods of open water. Most chemical ions in the ponds increased annually from a winter minimum to a spring maximum. Total dissolved …

Life History Of The Emerald Shiner In Lewis And Clark Lake, South Dakota, Everett H. Fuchs

Electronic Theses and Dissertations

The age, rate of growth, reproduction, feeding habits and population dynamics of the emerald shiner (Notropie atherinoides) were studied from 10, 375 fish collected in Lewis and Clark Lake South Dakota. The population consisted of four age groups dominated by young-of-the-yew during the summer and fall and by age group during spring and early summer. Age group II was common only in the spring and early summer. While age group III was rarely found. Average length at annulus formation was 66 mm for age group I and 84 mm for age group II. Females attained a size advantage over males …

Dieldrin Residues In Eggs And Fat Of Penned Pheasant Hens, Donald Wayne Lamb

Electronic Theses and Dissertations

At present, there is considerable interest in the effects of insecticides upon our wildlife populations. It is well known that chlorinated hydrocarbon insecticides are present in tissues and eggs of birds that receive these chemicals in their diets. Some workers, for example Gene11y and Rudd (1956) and DeWitt (1956), studied the effects of different levels of ingested insecticides on the reproduction of game birds. Additional studies are needed to relate the amount of insecticide in the diet to the level in the egg and that in turn to reproduction and effects on young birds. Work on pheasants is of special …

The Ugly Faces Of Pollution, Morris L. Brehmer, Fred C. Biggs

Reports

• Pt. 1. [no title]
• pt. 2. Toxic wastes
• pt. 3. Oxygen-removing wastes
• pt. 5. Over-enrichment
• pt. 5. Other pollutants.

A Preliminary Study On The Effects Of Organic Pollution Of Banners Corner Cave, Virginia, John R. Holsinger

International Journal of Speleology

Four pools were observed in Banners Corner Cave, Russell County, Virginia, over a 28 month period from November 1961 to February 1964. Three of these pools were visibly polluted with sewage which had seeped into the cave from septic tanks located on the hill above. All four of these pools, at one time or another during the study, contained large populations of planarians, Phagocata subterranea Hyman and isopods, Asellus recurvatus Steeves. Physicochemical and microbiological analyses of the pool waters indicated that oxygen tension is a low as 2.8 mg./l. in one pool and that coliforms and other forms of bacteria …

The Genus Arrhopalites (Collembola: Sminthuridae) In The United States And Canada, Kenneth Christiansen

International Journal of Speleology

The members of the genus Arrhopalites (Collembola Sminthuridae) found in the U.S. and Canada are described and illustrated. These include six previously described forms and seven new species: A. altus, A. clarus, A. bimus, A. bellingeri, A. dubius, A. hirtus, and A. amarus. Two forms known only from incomplete specimens are described, but not named. Nine of the species are found in caves, but only four of these are at present unknown from surface localities. The characteristics of the genus are described and discussed, and the genus Pseudarrhopalites Stach is placed in synonymy with Arrhopalites. New methods are …

Haptolana Trichostoma, A New Genus And Species Of Troglobitic Cirolanid Isopod From Cuba, Thomas E. Bowman

International Journal of Speleology

Haptolana trichostoma, described from 2 specimens collected in a cave in Camaguey Province, Cuba, is distinguished especially by the expanded peduncle of antenna 1, the posteriorly directed mandibular palp, and in having all 7 pereopods prehensile. This is the second recorded occurrence of a troglohitic cirolanid in Cuba and the eighth species reported from the Western Hemisphere.

Materialien Über Die Ökologie Und Biologie Von Sphaeromides Bureschi Strouhal, Angel Angelov

International Journal of Speleology

The acquatic cave Isopod Sphaeromides bureschi Strouhal was discovered by I. Buresch in the underground water of two caves in western Stara-Planina. In this paper the author describes a new station, a spring, in the same region and then exposes the results of ecological and biological observations on this species (biotope, temperature, sex-ratio, feeding regime, locomotion).

Ephemeropteren Und Plecopteren Aus Bulgarischen Höhlen, Boris K. Russev

International Journal of Speleology

The mayfly Ecdyonurus venosus (Fabr.) and the stonefly Perla marginata bureschi (Schoenemund) have been previously recorded from Bulgarian caves. The author has found the following additional species in the material collected by his colleagues in Bulgarian caves: Ephemeroptera - Habroleptoides modesta (Hagen), Paraleptophlebia tumida Bengtss. and Paraleptophlebia sp.; Plecoptera - Nemoura sp. and Dinocras cephalotes (Curtis). All these species are trogloxenes.

Nouvelles Contributions À L'Ètude De Bathynella (Bathynella) Natans Vejd. Et Bathynella (Antrobathynella) Stammeri (Jakobi), Eugène Serban

International Journal of Speleology

In an earlier paper the author separated Bathynella stammeri (Jakobi) (formerly considered a subspecies) from B. natans Vejd. sensu Jakobi and showed that this new species justified the erection of a new subgenus (Antrobathynella) of Bathynella. Study of the morphology of the mandible, and the 8th pereiopod of the male and female, and examination of the chaetotaxy of the uropods have revealed new diagnostic characters which permit the unequivocal separation of B. natans and B. stammeri. A diagnosis of both species is given. The present study is the result of examination of numerous specimens from many …

Eine Neue Niphargus-Art (Gammaridae, Amphipoda) Aus Bulgarien, Stoitze Andreev

International Journal of Speleology

The author describes a new species, Niphargus toplicensis n. sp., of the spring «Toplitzata» near the village of Mussomischta (district of Goze Delcev). N. toplicensis n. sp. Is closely related to N. aquilex moldacicus Dobreanu, Manolache and Puscariu, 1953, N. smederevanus Karaman, 1950, N. anatolicus Karaman, 1950, N. pancici Karaman, 1929, N. pancici clkanovi Karaman, 1959 but differs for several characters (a greater number of setae on the internal lobe of maxilla I, the coxal plates longer than their width, different armour of the telson and of the uropods I etc.).

Sobre Bathysciinae Catalanes (Col. Catopidae), F. Español

International Journal of Speleology

Elencation of Speonomus and Speophilus (Col. Catopidae) collected by different speleologists in relation with the Museum of Zoology of Barcelona in caves where no beetles had been found yet, completing the knowledge on cave Coleoptera on the Spanish side of the Pyrenees. The paper also contains the description of two new species (Speonomus aurouxi and Speophilus subilsi), and a short comment on Troglocharinus impelletierii Espaù. described as a race of hustachei Jeann., but different from this species by several characters that distinguish it very well, justifying its geographical isolation.

Developpement Larvaire Du Serpulien Cavernicole Marifugia Cavatica Absolon Et Hrabe (Polychaeta, Sedentaria), Janez Matjašič, Boris Sket

International Journal of Speleology

Among material coming from Hercegovina some living trochoporae of the cave Serpulid Marifugia cavatica have been found. In the laboratory of the Biology Institute of Ljubljana the further development passing stages of metatrochophore and nectochaeta have been observed. The constitution of the trochophore is typical. The nectochaeta possesses three metamera and each of these has only one pair of setae. The nectochaeta once it gets attached to the bottom the neck and beginning of tentacles are beginning to develop. The tube, three pairs of simple tentacles and the opercula are formed in further stages. For the period in which the …

Notulae Orthopterologicae Xxi - Le Dolichopoda Della Francia E Della Spagna, Baccio Baccetti

International Journal of Speleology

The revision of French-Iberian Dolichopoda has led to the identification of four different species of Dolichopoda s. str. One of these (D. azami) seems to have a large geonomy in the French Alps and it had already been noticed in Italy, too. A second species (D. chopardi m.), still new to science, seems to be restricted to the Maritime Alps; the third and the fourth (D. linderi and D. bolivari), already well known, seem to be localized in the Pyrenees and the Cevennes. Owing to their morphological characters Dolichopoda azami and chopardi constitute a very …

Remarques Sur L'Espèce Asellus Cavaticus Leydig (Crustacé Isopode Hypogé) Et Description D'Une Sous-Espèce Nouvelle, Jean-Paul Henry

International Journal of Speleology

In Europe, Asellus cavaticus Leydig until 1963 was the only species known of a phyletic line that extended from Britain to Austria. Until the works of Racovitza in 1919 all the Asellus of the underground world were reported to this species, first known subterranean Asellus. The taxonomic criteria of Racovitza allowed to determine many subspecies. Later on Chappuis refuses to give names to the different encountered forms. Taking as type forms the individuals of the grotte de Sainte-Reine (Meurthe-et-Moselle), considered very similar to the original type forms, we think to be able to define a new subspecies puteanus for …

The Geographical Distribution Of Australian Cave-Dwelling Chiroptera, E. Hamilton-Smith

International Journal of Speleology

Of the 56 species of bats currently recorded from Australia, 22 are known to occur in caves. The geographical distribution of each of these species is detailed, and from this data, the species are divided into four groups according to their pattern of distribution. Group I comprises those species found only North of 18°S latitude, all of which either also occur in New Guinea or are closely related to New Guinea species. Group II, including both endemic Australian genera, occurs over that area North of 28°S latitude. This area largely comprises desert or semi-desert terrain, with its characteristics of low …

Three New Species Of Cymbella From Mammoth Cave, Kentucky, Sam L. Van Landingham

International Journal of Speleology

During an investigation of the diatom flora of Mammoth Cave, Kentucky three Cymbella species were noted which could not be identified with any yet described forms. This paper contains a taxonomic description of the three new species: Cymbella clausii, Cymbella gerloffii, Cymbella hohnii. A common feature of all three species is the rather broad central area which may have been the result of a special adaptation to the cave environment.

Contribution À L'Etude De Bathynella D'Europe: Bathynella Natans Vejdovsky, Un Dilemme À Résoudre, Eugène Serban

International Journal of Speleology

After a minute study of the structure of the 8th male pereiopod in some Bathynella populations from Romania and England, the structure differences which were found allowed to identify two well individualized kinds of pereiopods; they were named type natans and type stammeri. Taking into account the striking differences between these two types, B. stammeri (Jakobi), which since 1954 is considered to be a subspecies of the natans species, was separated out of the species B. natans sensu Jakobi (1954). The populations understudied were collected in England and Romania, their minute study being the object of an other note, …

Über Höhlenbewohnende Moose, László Vajda

International Journal of Speleology

Among the mosses collected by Dr. K. Verseghy in the caves of the environment of Lillafured Eucladium verticillatum (L.) Br. Eur. was found which had some peculiar bulbillae composed of two to many cells on the ends of the filaments. They may represent special reproductive organs as yet unknown in this genus. None of the mosses living in the caves developed sex organs.

Algological Studies In The Cave Of Mátyás Mount, Budapest, Hungary, Lajos Hajdu

International Journal of Speleology

Experiments were designed to test the ability of the aphotic speleoenvironment to support algal growth. The first series contained gelatin cultures of Scenedesmus placed in the cave at different localities in order to establish whether or not the microhabitats have any particular effect on the multiplication of the algae. No differences were found in the cultures after a three month incubation period in the cave, which could be traced to influences of microenvironmental conditions. Chlorella cultures in sterile Knop’s solution showed measurable growth in the cave whereas if the cultures were installed into sterilized cave water or were shielded by …