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Articles 42511 - 42540 of 43067
Full-Text Articles in Physical Sciences and Mathematics
Daten Zur Kenntnis Der Algenflora Der Höhle Kölyuk Von Mánfa, George Claus
Daten Zur Kenntnis Der Algenflora Der Höhle Kölyuk Von Mánfa, George Claus
International Journal of Speleology
The Kolyuk cave lies in the southern part of Hungary in the Mecsek Mountains, about 3 km. in distance from the village of Mànfa. The material accepted for investigation originated from a recently discovered and until now completely entombed part of the cave. It was collected by the geologist Gàbor Magyari and consisted of material scraped from the walls and ceiling of a cavity in the cave, which could be reached only by underwater swimming. From these scrapings cultures were installed with sterile Knopp solution and after the algae present in the collection reproduced, a diversified flora developed which consisted …
Les Chauves-Souris Cavernicoles De La Suisse, Villy Aellen
Les Chauves-Souris Cavernicoles De La Suisse, Villy Aellen
International Journal of Speleology
Bats, familiar to speleologists, play an important part in animal ecology in caves. Indirectly by their guano, they provide a source of food for numerous cave-dwelling animals and directly, by their own more or less constant presence. 26 species of bats are known from Switzerland, 15 of which occur in caves. Miniopterus schreibersi is considered the only true cave-dweller. The exact distribution of the rare species, including those occurring outside caves, is found in the text and is also indicated on the accompanying maps.
Grottes Du Banat (Roumanie) Explorées En 1963, Stefan Negrea, Alexandrina Negrea, V. Sencu, Lazare Botoşaneanu
Grottes Du Banat (Roumanie) Explorées En 1963, Stefan Negrea, Alexandrina Negrea, V. Sencu, Lazare Botoşaneanu
International Journal of Speleology
The paper contains the description of 23 natural or artificial underground cavities in the Banat mountains, grouped in karst zones. It is in all respects a continuation of a preceding volume (Botosaneanu, Negrea & Negrea,1963) on the caves of the Romanian Banat.
Puccinellia : Outstanding Saltland Grass, C V. Malcolm, S. T. Smith
Puccinellia : Outstanding Saltland Grass, C V. Malcolm, S. T. Smith
Journal of the Department of Agriculture, Western Australia, Series 4
"Puccinellia" is a tussocky perennial grass with an outstanding ability to survive salty and waterlogged conditions.
Considerable areas of saltland in Western Australia are suited to its growth.
Seed is now available commercially and in this article the conditions to which the grass is suited are described and establishment and management methods are suggested.
Seed And Pasture Rates For New Dairy Pastures, F E. Ryan
Seed And Pasture Rates For New Dairy Pastures, F E. Ryan
Journal of the Department of Agriculture, Western Australia, Series 4
THE success or failure of pasture establishment on new land often depends on the interaction of rate of seeding and rate of superphosphate application.
Every year large areas of virgin land are cleared and sown to pasture in the higher rainfall areas, and all-too often the new pasture is not as successful as it should be because too little super is applied, and, in some cases, too little seed.
Lot Feeding Of Beef Cattle. 3. Facilities Required For A Feed Lot, W J O Wilkie
Lot Feeding Of Beef Cattle. 3. Facilities Required For A Feed Lot, W J O Wilkie
Journal of the Department of Agriculture, Western Australia, Series 4
MANY THINGS must be considered in planning a feed lot.
The site must be well chosen, fencing, gates and yards must be adequate for the cattle carried and feeding and watering facilities should be of a high standard.
Other things to consider are the provision of shelter and shade for the cattle and buildings for feed storage and other purposes.
How To Measure The Capacity Of Farm Dams, G Gauntlett
How To Measure The Capacity Of Farm Dams, G Gauntlett
Journal of the Department of Agriculture, Western Australia, Series 4
AT some time or another nearly every farmer needs to be able to measure the capacity of an ordinary farm dam of the "excavated earth tank" type and many requests are made for a method of calculating this volume.
This article describes how this can be done.
Wheat Quality Surveys In Western Australia. 2. Variation Between Seasons And Localities In The Production Of High And Low Protein Wheat, J A. Parish
Journal of the Department of Agriculture, Western Australia, Series 4
Although the protein content of West Australian f.a.q. wheat averages only 9.4 per cent., often substantial amounts of comparatively high protein wheat are contained in this mixture.
However the quantity varies widely from year to year and is obtained from widely scattered areas of the wheatbelt.
Diatoms From Mammoth Cave, Kentucky, Sam L. Van Landingham
Diatoms From Mammoth Cave, Kentucky, Sam L. Van Landingham
International Journal of Speleology
Samples collected in Mammoth Cave, Kentucky, revealed the presence of a diversified but not too abundant diatom community in the cave. As the material was not subjected to culturing experiments but was investigated immediately after arrival, both in native and permanent preparations, it was possible to: 1. ascertain that the majority of the diatoms contained well developed, apparently healthy and functioning chloroplasts and 2. to get a rough estimate of the actual number of specimens present in a microhabitat. The identifications resulted in the recognition of 16 diatom taxa of which possibly 4 are new to science. Further studies are, …
Faune Des Eaux Souterraines Saumâtres De L'Asie Centrale, J. A. Birstein, S. I. Ljovuschkin
Faune Des Eaux Souterraines Saumâtres De L'Asie Centrale, J. A. Birstein, S. I. Ljovuschkin
International Journal of Speleology
In the cave Kaptar-Khana (south-western Turkmenistan) was discovered a lake filled with water with a salinity of 11,68‰. This lake is inhabited by a fauna of marine origin - Foraminifera (three species), Molluscs (Pseudocaspia ljovuschkini sp.n.), Harpacticoida (genera Ectinosoma, Schizopera and Nitocra), Isopoda (Microcharon halophilus sp.n.) and possibly Nematoda (Oncholaimidae). The majority of the discovered species are related to species of circum-Mediterranean origin. Geological data do not permit to consider this fauna as a relict of any of the tertiary seas. The same applies to all other cases when animals of marine origin were discovered …
A Property Of The Mean Stieltjes Integral, J. A. Dyer
A Property Of The Mean Stieltjes Integral, J. A. Dyer
Journal of the Graduate Research Center
The purpose of this note is to consider the following problem. Suppose [a,b] is an interval, f a function in [a,b] and g a function which has a derivative in [a,b].
Experimental Design Models, J. Leroy Folks
Experimental Design Models, J. Leroy Folks
Journal of the Graduate Research Center
If we were to assume a linear relationship between x and y described by the model y = a + βx + e it is unlikely that we would consider writing the model as y = a + bx + cx + e. It is even more unlikely that we would apply the least squares principle by minimizing Σe2 with respect to a, b, and c. Yet a similar thing happens in experimental design. In fact, it is common practice to use less than full-rank models where the parameters are not defined and, in cases where they are defined, to …
A Comparison Between The Direction Of Tornado Movement And The Associated 500 Mb. Level Wind Direction, Allen B. Johnson
A Comparison Between The Direction Of Tornado Movement And The Associated 500 Mb. Level Wind Direction, Allen B. Johnson
Journal of the Minnesota Academy of Science
An investigation to ( 1) determine the 500-milli-bar level weather patterns associated with tornadoes moving from northwest toward southeast and from southwest toward northeast and, (2) show the significance of the contrasts between the 500-mb. level weather patterns of the two tornado types. A very high relationship between the direction of the 500-mb. level winds and the tornado direction was substantiated by a coefficient of correlation of +0.88. The typical 500-mb. level low center associated with the northwest to southeast type tornado was located over Hudson Bay about 1300 miles north-northeast of the tornado area. The low center associated with …
Variation In Perthitic Microcline From A Zoned Pegmatite, Terry E. Tullis
Variation In Perthitic Microcline From A Zoned Pegmatite, Terry E. Tullis
Journal of the Minnesota Academy of Science
Quantitative microscopic and chemical anaylses of 12 specimens of microcline, most of them perthitic, from the zoned Hugo pegmatite in the Black Hills near Keystone, South Dakota, have yielded data that can be used to estimate the temperatures of crystallization at successive stages in the formation of the pegmatite. The determined temperatures of crystallization range from 565°C in zone 3a, near the margin of the pegmatite, to 280°C in zone 7, the core.
Favorite Sons: Obsolete Presidential Candidates, James W. Davis
Favorite Sons: Obsolete Presidential Candidates, James W. Davis
Journal of the Minnesota Academy of Science
With the 1964 national nominating conventions slightly more than a year away, nationwide political attention will once again be focused upon the presidential sweepstakes race. Inasmuch as the party controlling the presidency, the "in-party," almost never discards an incumbent, the president is virtually assured renomination by the Democrats; consequently politicians in both parties and the American voters will be concerned chiefly with the selection of the Republican candidate.
At this juncture it is impossible, of course, to predict flatly how many of the leading Republican contenders will openly toss their hats in the ring. But it is safe to assert …
Henry George In England, Milton A. Ochsner
Henry George In England, Milton A. Ochsner
Journal of the Minnesota Academy of Science
The forward rush of the Industrial Revolution had already by the tum of the 19th century silenced the hand looms in England and sent their operators to the city and its factories. Once there, the masses and their government fell prey to all the problems attendant to rapid and disorderly industrialization of which high rent, periodic unemployment, and labor unrest were just a few. The fundamental homogeneous outlook which the British had always somehow maintained in the face of other crises was now threatened anew. This was a new misery that gripped the land. It struck hardest at those who …
Soil Conservation : Build Contour Banks With A Disc Plough, G W. Spencer, D. J. Carder
Soil Conservation : Build Contour Banks With A Disc Plough, G W. Spencer, D. J. Carder
Journal of the Department of Agriculture, Western Australia, Series 4
Heavy earthmoving machinery is not necessary for contouring; most farmers are already equipped to do the job themselves.
This article by soil conservation advisers G. W. Spencer and D. J. Carder tells how to build contour banks with a disc plough.
Dairy Farming In The Busselton-Margaret River District. Part 1. Stage Of Development, R A. Bettenay
Dairy Farming In The Busselton-Margaret River District. Part 1. Stage Of Development, R A. Bettenay
Journal of the Department of Agriculture, Western Australia, Series 4
This article is the first of four in a series reporting a survey of farming practices in the Busselton-Margaret River area.
Besides the development of farms the series will cover farm stocking rates and milk production on farms in the area.
THE survey of farms in the Busselton-Margaret River district began at the end of the 1962 season.
Information on the stage of development of the properties was obtained from 94 farmers during advisory visits.
Treating Severe Saltland, Department Of Agriculture, Western Australia
Treating Severe Saltland, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
THE illustration shows a large area of severely salt affected land near Narembeen.
Before treatment, sheep had access to the area and in summer broke the topsoil into a fine powder which lifted to form dust storms with every good breeze.
Soil Conservation : Contour Banks Must Be Maintained, D J. Carder, G. W. Spencer
Soil Conservation : Contour Banks Must Be Maintained, D J. Carder, G. W. Spencer
Journal of the Department of Agriculture, Western Australia, Series 4
The wet winter of 1963 showed up faults in many contour bank systems and emphasised that banks won't last forever without maintenance.
This article tells where to look for weaknesses and how to treat them.
Soil Erosion And Farm Water Supplies, J C. Grasby, J. E. Watson
Soil Erosion And Farm Water Supplies, J C. Grasby, J. E. Watson
Journal of the Department of Agriculture, Western Australia, Series 4
Water supplies for stock have an important influence on farm management.
In this article Soil Conservation Advisers J. C. Grasby and J. E. Watson discuss problems of soil erosion and farm water supplies.
Grade Herd Recording, 1963-64, Maurice C. Cullity
Grade Herd Recording, 1963-64, Maurice C. Cullity
Journal of the Department of Agriculture, Western Australia, Series 4
A review of Grade Herd Recording during the 1963-64 season.
THERE was a substantial increase in the number of cows which were recorded in 1963-64 compared with 1962-63 (23,520 and 22,635 respectively).
This season's figure represents 20.4 per cent, of all cows in the dairying districts.
The number of cows which completed lactation and therefore whose yields were included in the averages, rose from 17,258 to 19,011.
Opposed Disc Plough Furrows Hard Kimberley Soils, Department Of Agriculture, Western Australia
Opposed Disc Plough Furrows Hard Kimberley Soils, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
THE work of reclaiming the eroded areas of the Ord River catchment has posed special problems for field staff of the Department of Agriculture engaged on this large scale project.
Thousands of miles of furrows must be contour-ploughed and seeded in extremely hard ground over big areas of eroded country.
Migratory Movements Of Emus And Control Efforts, John L. Long, T. J. Tozer
Migratory Movements Of Emus And Control Efforts, John L. Long, T. J. Tozer
Journal of the Department of Agriculture, Western Australia, Series 4
ALTHOUGH little data has been recorded on movements or migrations of the Emu (Dromaius novea-hollandiae), it is well known throughout the farming community that some such movement occurs in September and October in most years at least.
Modern Methods Boost Apple Production In A South-West Orchard, N H. Shorter
Modern Methods Boost Apple Production In A South-West Orchard, N H. Shorter
Journal of the Department of Agriculture, Western Australia, Series 4
A WELL-KNOWN South-West apple orchard with an impressive cropping record is owned by W. F. & E. M. Dilley and Sons, of Upper Capel, near Donnybrook.
Trees in this orchard have been producing consistently heavy crops for many years and, furthermore, yields have increased steadily over a 10-year period.
Put Garden Rubbish To Work In A Compost Heap, W Dawson
Put Garden Rubbish To Work In A Compost Heap, W Dawson
Journal of the Department of Agriculture, Western Australia, Series 4
THERE'S a surprising amount of mumbo jumbo written about the simple compost heap. By the time you've waded through all the instructions, you feel as if you ought to have prerequisites of a doctorate in soil chemistry or an unbroken ancestry of at least three generations of professional English gardeners.
Soil Erosion By Water In W.A. Cropland : A Serious And Widespread Problem, Department Of Agriculture, Western Australia
Soil Erosion By Water In W.A. Cropland : A Serious And Widespread Problem, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
Much wheatbelt agriculture is based on thin topsoils which are inherently infertile by world standards. Erosion even to the depth of cultivation will cause the loss of:—
• most of the original topsoil
• the phosphate build up from years of "super" applications
• any accumulation of organic matter and humus.
Salt Land Survey, 1962 : Report Of A Survey Of Soil Salinity In The Agricultural Areas Of Western Australia, L C. Lightfoot, S. T. Smith, C. V. Malcolm
Salt Land Survey, 1962 : Report Of A Survey Of Soil Salinity In The Agricultural Areas Of Western Australia, L C. Lightfoot, S. T. Smith, C. V. Malcolm
Journal of the Department of Agriculture, Western Australia, Series 4
IN Western Australia there are within the agricultural areas about one million acres of salt land, largely within the 14-25 inch rainfall area used for cereal and wool production.
In March, 1962, farmers in 68 shires in the agricultural areas of Western Australia estimated that on their properties 305,270 acres of land previously cropped or sown to pasture had become salt affected. Of this total, 59,203 acres had gone salt in the seven years immediately before the survey.
Agriculture In The Lakes District : Report Of A Survey Of Farm Practices, A W. Hogstrom
Agriculture In The Lakes District : Report Of A Survey Of Farm Practices, A W. Hogstrom
Journal of the Department of Agriculture, Western Australia, Series 4
At the request of the Central South Zone Development Committee a survey which covered 58 farms in the Lakes District was carried out by officers of the Department of Agriculture. Field work for the survey started in 1961.
The Lakes District supports about 70 holdings adjoining a chain of salt lakes to the east of Newdegate and Hyden but west of the No. 1 Rabbit Proof Fence.
The chain of lakes is about 70 miles long running in a N.N.W. to S.S.E. direction. The lakes are O'Connor, Carmody, Hurlstone, Varley, Gulson, Fox, Camm, King, and Pal lamp.
Algae And Their Mode Of Life In The Baradla Cave At Aggtelek Ii, George Claus
Algae And Their Mode Of Life In The Baradla Cave At Aggtelek Ii, George Claus
International Journal of Speleology
The author provides additional data to his publication of 1955. In a table he shows his results concerning 81 algal species which were returned to the cave of Aggtelek on June 22, 1954. When carrying out his control tests he found the decrease in the number of species to be 9 after 6 months and 18 after a further 8 months. In December 1957, after culturing on sun light however he was able to show again the presence of 17 species, but in his cultures Synechoccus elongatus, Phormidium dimorphum, Gloecoccus schròterii, Chlorococcum infusionum, Chlorella miniata and Protococcus anulatus, appeared …