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Articles 286561 - 286590 of 293414

Full-Text Articles in Physical Sciences and Mathematics

Algae From The Cave Of Mátyás Mount, Budapest, Hungary, P. Palik Jan 1966

Algae From The Cave Of Mátyás Mount, Budapest, Hungary, P. Palik

International Journal of Speleology

Seven collections containing scrapings of speleoclay or samples from the cave waters were received from L. Hajdu and were cultured in light in a modified Knop’s solution. The cultures yielded 21 different algal taxa, of which five species belong to the Cyanophyta four to the Bacillariophycaea class of the Chrysophyta and twelve to the Chlorophyta. From the species distribution, the cave shows a similarity to the nearby cave of Pàlvolgy, namely both of them contained more than 50 per cent Chlorophyta. Among the Cyanophyta the occurrence of Baradlaia speluncaecola Palik is noteworthy. This species seems to be a true troglobitic …


Calcite-Aragonite Speleothems From A Hand-Dug Cave In Northeast Kansas, Frederic R. Siegel, Wakefield Dort Jr. Jan 1966

Calcite-Aragonite Speleothems From A Hand-Dug Cave In Northeast Kansas, Frederic R. Siegel, Wakefield Dort Jr.

International Journal of Speleology

Speleothems in the form of stalactites, linear stalactitic growths, flowstone, and crusts, from a hand-dug cave in Northeast Kansas (Sec. 2 NENW, T2S, R22E) are composed of calcite and aragonite. If the estimated age of the cave is correct, i.e., 150 to 200 years old, the stalactites have grown at a maximum rate of 0.20 to 0.15 millimetres per year along their vertical axes. All of the speleothems examined contain about one percent strontium (based on qualitative emission spectrograph analyses). Rate of supply and evaporation of the vadose waters may dictate whether aragonite or calcite is the polymorph that precipitates …


Nuevas Citas De Murciélagos Españoles, E. Balcells R. Jan 1966

Nuevas Citas De Murciélagos Españoles, E. Balcells R.

International Journal of Speleology

Short citation on new findings of bats in Spanish caves.


Contribution À La Systématique Des Stenasellinae D'Afrique (Crustacés, Asellotes), Guy Magniez Jan 1966

Contribution À La Systématique Des Stenasellinae D'Afrique (Crustacés, Asellotes), Guy Magniez

International Journal of Speleology

From 1897 to 1962, many species have been described as belonging to the genus Stenasellus Dollfus. Among all these the forms from Central Africa and one of Western Africa are not conform to the generic description of Racovitza 1924 obliging us to institute two new genera, Metastenasellus and Parastenasellus. The archaeic Asellota belong to the genus Stenasellus Dollfus, Johannella Monod, Metastenasellus nov.gen. and Parastenasellus nov. gen. are thus grouped in a sub family of Stenasellinae and the relationship between the different groups has still to be explained.


Les Crustacés Du Réservoir De La Fontaine Des Suisses À Dijon, Bernard Dussart, François Graf, Roger Husson Jan 1966

Les Crustacés Du Réservoir De La Fontaine Des Suisses À Dijon, Bernard Dussart, François Graf, Roger Husson

International Journal of Speleology

Inventory of the Crustaceans collected in the basin of the Fonatine des Suisses at Dijon. The Copepoda are represented by 5 species: Macrocyclops albidits, Eucyclops serrulatus in two slightly different forms, Eucyclops serrulatus var. mihi, Acanthocyclops venustus, Acanthocyclops vernalis and Acanthocyclops robustus. The coexistence of these two last forms in this very tiny environment makes it probable that we have here to do with two distinct species. A determination key is given for the Genus Acanthocyclops. Amphipoda are represented by Niphargus virei and especially Niphargus kochianus kochianus of which more than 100 samples have been …


Hommage À La Mémoire De René Jeannel, Constantin Motas Jan 1966

Hommage À La Mémoire De René Jeannel, Constantin Motas

International Journal of Speleology

In this paper the author evokes the principal stages of activity in the life of the great French speleologist, René Jeannel. He records the admiration and respect attributed to Jeannel in the field of entomology. Emphasis is given to the work of Jeannel at Cluj, Romania, carried on with E. G. Racovitza and P. A. Chappuis. A summary is made of Jeannel’s many travels. The significant conclusions of these are presented as well as an insight into the character of this prominent French naturalist.


Hurleya Kalamundae N.G.N.Sp. (Amphipoda, Gammaridae) From Subterranean Waters Of Western Australia, Milan Straškraba Jan 1966

Hurleya Kalamundae N.G.N.Sp. (Amphipoda, Gammaridae) From Subterranean Waters Of Western Australia, Milan Straškraba

International Journal of Speleology

A new genus and species of freshwater Gammaridae (Amphipoda) from subterranean waters of Western Australia is described, Hurleya kalamundae n. g. n. sp. The genus apparently represents an aberrant line of the Crangonyx group of Gammaridae.


Diptéres Cavernicoles Recueillis En Bulgarie, Anca Burghele-Balacesco Jan 1966

Diptéres Cavernicoles Recueillis En Bulgarie, Anca Burghele-Balacesco

International Journal of Speleology

We present the list of the Limnobiidae, Mycetophilidae, Anthomyidae and Helomyzidae species collected in the caves of Bulgaria, most part on occasion of the third international speleological expedition.


Contribución Al Conocimiento De Los Speophilus Del Grupo Kiesenwetteri Diek, Oleguer Escolà I Boada Jan 1966

Contribución Al Conocimiento De Los Speophilus Del Grupo Kiesenwetteri Diek, Oleguer Escolà I Boada

International Journal of Speleology

The author has studied the group kiesenwetteri of the genus Speophilus (Col. Catopidae), endemic of Catalogna (Spain). The paper comprises a geographical and geological analysis of the by this group colonised massifs, with a study on the geological isolation of the species and a faunistic study of the 5 actually known forms, one of which is new.


Pelodrilus Bureschi Mich. 1924 (Oligochaeta Haplotaxidae Dans Les Grottes Du Banat (Roumanie), Francise Botea, Lazare Botoşaneanu Jan 1966

Pelodrilus Bureschi Mich. 1924 (Oligochaeta Haplotaxidae Dans Les Grottes Du Banat (Roumanie), Francise Botea, Lazare Botoşaneanu

International Journal of Speleology

Pelodrilus bureschi Mich., one of two species of limicolous oligochaetes strictly confined to a subterranean environment and previously known from several caves in Bulgaria and Yugoslavia, was recently found in three caves in the Banat Mountains, Romania. Examination of sexually mature worms showed that they are within the range of variability of P. bureschi and that there is no reason to describe a form peculiar to the caves of Banat. Pelodrilus has almost always been found in the mud or clay covering the bottom of pools of variable size, which are filled by periodic flooding of underground water courses. The …


Description D'Un Piége À Niphargus, François Graf Jan 1966

Description D'Un Piége À Niphargus, François Graf

International Journal of Speleology

The description of a trap permitting the capture of Niphargus in deep waters is given. No handling or surveillance is necessary. The amphipods are caught automatically.


Hydracariens Souterrains De Bulgarie. I. Mideopsis (Nudomideopsis) Motasi N. Sp., Anelya Petrova Jan 1966

Hydracariens Souterrains De Bulgarie. I. Mideopsis (Nudomideopsis) Motasi N. Sp., Anelya Petrova

International Journal of Speleology

A new species of Mideopsis (Nudomideopsis) motasi n. sp. coming from a well near Gorni-Ciflik, close to Belogradchik in NW Bulgaria, is described. For the structure of the palp it is distinguished from the other subterranean European species Mideopsis (Mideopsis (Nudomideopsis) longipalpis Szalay and Mideopsis (Nudomideopsis) fonticola Tanasachi et Orghidan and resembles some Japonese Mideopsis species found also in wells.


The Faraday Rotation And Dispersive Doppler Effects In The Ionosphere At Oblique Incidence, Charles Roland Baugher Ii Jan 1966

The Faraday Rotation And Dispersive Doppler Effects In The Ionosphere At Oblique Incidence, Charles Roland Baugher Ii

Masters Theses

"Integral equations for the isotropic and anisotropic ray path of a radio wave propagating through the ionosphere are developed. These equations assume a spherically stratisfied ionosphere and are equivalent to a detailed ray-tracing process. A method is devised to utilize these equations in the evaluation of combined Faraday rotation and dispersive Doppler data from earth satellites for subionospheric electron content. The method, which corrects for horizontal ionospheric gradients, is applied to data from the Explorer 22 satellite and some preliminary results are discussed"--Abstract, page ii.


The Electrical Resistivity Of Different Types Of Glasses, Fadel Youssef Iskandar Assabghy Jan 1966

The Electrical Resistivity Of Different Types Of Glasses, Fadel Youssef Iskandar Assabghy

Archived Theses and Dissertations

No abstract provided.


Design And Construction Of A Pulsed Glass Laser, Mostafa Ibrahim Azab Jan 1966

Design And Construction Of A Pulsed Glass Laser, Mostafa Ibrahim Azab

Archived Theses and Dissertations

No abstract provided.


A Study Of Some Properties Of As2S3 Glass And The Test Of A New Theory Of Glass Formation, Edward Nashed Bolous Jan 1966

A Study Of Some Properties Of As2S3 Glass And The Test Of A New Theory Of Glass Formation, Edward Nashed Bolous

Archived Theses and Dissertations

No abstract provided.


Mastodon Tusk [Uni Museum Inventory Description], Iowa State Teachers College Jan 1966

Mastodon Tusk [Uni Museum Inventory Description], Iowa State Teachers College

Mastodon Tusk Background Material

Summary of treatment of the tusk from 1933-1966.


The Synthesis Of Benzyl N-Carbobenzoxy Beta-D-Glucosaminid Uronic Acid Derivatives, Stuart Martin Block Jan 1966

The Synthesis Of Benzyl N-Carbobenzoxy Beta-D-Glucosaminid Uronic Acid Derivatives, Stuart Martin Block

University of the Pacific Theses and Dissertations

The purpose of this research is the preparation and characterization of derivatives of benzyl N-carbobenzoxy-β-D-glucosaminiduronic acid. Previously the derivatives of benzyl N-carbobenzoxy-α-D-glucosaminid-uronic acid have been prepared by H. Weidmann and H. K. Zimmerman (32). The procedure upon which both these uronic acid syntheses is based has been developed with the utilization of platinum in the selective catalytic oxidation of both the benzyl α- and β-D-glucuronosides. The applicability of this research is in the development of new intermediates for the preparation of new diamino sugars or other natural products.


The Synthesis Of 4-Spiro-2-Aryloxazolines Of Potential Pharmacological Interest, Paul Waddell Collins Jan 1966

The Synthesis Of 4-Spiro-2-Aryloxazolines Of Potential Pharmacological Interest, Paul Waddell Collins

Theses and Dissertations

Numerous and diverse physiological actions are found among 2-oxazoline compounds. No reports of the synthesis or biological testing of 4-spiro-2-aryl-2-oxazolines were found in the literature. On the basis of the known pharmacological activities of certain aza- and diazaspirans, it was felt that 4-spiro-2-aryl-2-oxazolines should possess medicinal activity. In particular, it was reasoned that the combination in a bicyclic spiro structure of the 2-oxazoline ring with rings systems commonly found in synthetic antitussive compounds might result in active antitussive agents.

The aim of this research was the synthesis of a series· of 2-aryl-2-oxazoline-4-spirocyclopentanes and a series of 1'-methyl-2-aryl-2-oxazoline-4-spiro-4’-piperidines. Six members were …


Synthesis Of Benzyl Beta D-Gulopyranosiduronic Acid-(2',3': 4,5)-Oxazolidone-2, Gerald Duane Shryock Jan 1966

Synthesis Of Benzyl Beta D-Gulopyranosiduronic Acid-(2',3': 4,5)-Oxazolidone-2, Gerald Duane Shryock

University of the Pacific Theses and Dissertations

Although D-glucosamine has been found as a constituent of some antibiotics (28), very little research has been carried out in the area of synthetic preparations. Dutcher (7) recently reviewed the biochemical importance of this class of amino sugars as a constituent of complex antibiotic substances which compose the streptothricin family. For a complete elucidation of these antibiotics, it becomes necessary to investigate thoroughly the synthesis and reactions of the D-glucosamine compounds. Gross et al. (12) have succeeded in preparing the oxazolidone of α-D-glucosamine as well as some derivatives (13) of this compound. The present work reports an attempt to prepare …


Capillary Behavior Of Viscous Liquids, Marvin De Young Jan 1966

Capillary Behavior Of Viscous Liquids, Marvin De Young

University of the Pacific Theses and Dissertations

A major problem confronting every investigator who works with synthetic organic chemistry is that of the crystallization of the products obtained. This problem necessitates extensive attention both on the experimental and on the theoretical level. In order to gain an understanding of the behavior of substances in the liquid state, so as to be better able to manipulate them in procedures intended to induce crystallization from complex mixtures, considerable attention has been given to various models of the liquid state. An understanding of the nature of pure liquids would seem to be an essential prelude to any attempt to understand …


Spin-Resonance Transitions Of Free Radicals In The Zeeman Region, Juana Vivó Acrivos Jan 1966

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

Faculty Publications, Chemistry

No abstract provided.


Leaf Scorching, Department Of Agriculture, Western Australia Jan 1966

Leaf Scorching, Department Of Agriculture, Western Australia

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

DURING the summer months, leaves of many plants develop browning and scorching which progresses inwards from the leaf margin or downwards from the leaf tip.

The affected parts become dry and brittle and may break away from the remaining green areas.


Piggery Septic System, N E. Macintyre Jan 1966

Piggery Septic System, N E. Macintyre

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

ONE of the problems of intensive houses for pigs is the disposal of the dung and urine.

If proper arrangements are not made to remove this, it soon accumulates in an offensive pile at one end of the piggery, making an excellent breeding ground for flies.


Salinity And Farmhouse Water Supplies, T C. Stoneman Jan 1966

Salinity And Farmhouse Water Supplies, T C. Stoneman

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

PROVISION of a satisfactory water supply for the homestead is one of the many problems which have to be faced by all farmers.

For those served by the Comprehensive Water Supply Scheme, the solution is fairly simple.

For others, finding an adequate supply of good quality water can often be quite a headache.


Summer And Autumn Rainfall In Relation To Epidemics Of Wheat Stem Rust In Western Australia, W A. Shipton Jan 1966

Summer And Autumn Rainfall In Relation To Epidemics Of Wheat Stem Rust In Western Australia, W A. Shipton

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

High summer and autumn rainfalls, followed by rust infection of volunteer plants and favourable conditions during late winter and spring, lead to rust epidemics.

WIDESPREAD outbreaks of wheat stem rust are rare in Western Australia.


Cultivation : Does Haste Mean Waste?, H M. Fisher Jan 1966

Cultivation : Does Haste Mean Waste?, H M. Fisher

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

Many farmers believe that increasing the speed of cultivation and seeding implements will cause deterioration of soils and reduced crop yields.

In a three-year trial on clover ley land at Wongan Hills higher cultivation speeds tended to increase rather than decrease wheat yields. There was some deterioration in the physical structure of the soil.


Egg Shell Quality, R J. Bishop Jan 1966

Egg Shell Quality, R J. Bishop

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

Recent overseas work and local industry developments indicate that the calcium content of feed for laying hens in Western Australia should be increased to achieve satisfactory egg shell strength.

Age, temperature and breeding are other important influences on egg shell quality.


Ammonium Nitrate Blasting Agent (Anfo) For Land Clearing, G A. Greaves Jan 1966

Ammonium Nitrate Blasting Agent (Anfo) For Land Clearing, G A. Greaves

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

The introduction of "prilled" AN has revolutionised explosives practice and made possible safer and cheaper methods of blasting.

This article outlines the methods of handling and using ANFO blasting agent for land clearing.


Irrigation In The South-West : Report On Government-Controlled Areas, 1965-66, G Gauntlett Jan 1966

Irrigation In The South-West : Report On Government-Controlled Areas, 1965-66, G Gauntlett

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

LARGE scale irrigation in the south-western part of Western Australia is confined to the coastal plain, west of the Darling Range where the three irrigation districts of Waroona, Harvey and Collie have been established.