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Registros recuperados: 204
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Época de semeação da guaxima Bragantia
Medina,J. C..
Ano: 1950 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051950000800003
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Estudo do sistema radicular do arroz Bragantia
Germek,Emílio B.; Inforzato,Romeu; Franco,Coaraci M..
The development of the root system on five varieties of rice grown under upland conditions, has been studied. It has been found, with the rice varieties used and under the conditions tested, that 66 percent of the roots occured within 5 centimeters and 95 percent within 15 centimeters of the surface of the ground. A few roots were found to reach a depth of 1 meter, and occasionally to a depth of 1.35 meter. The Iguape-catete variety of rice showed a tendency to develop a somewhat deeper root system than the other varieties studied. Recognition of the fact that development of the roots of the rice plant is largely within the plowed layer of soil, suggests that deep plowing prior to planting with frequent and shallow cultivation following planting, to...
Tipo: Info:eu-repo/semantics/article
Ano: 1950 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051950000300003
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Estudos sôbre a coloração da gema de ôvo de galinhas - IV. Efeito da raça e da quantidade de milho amarelo na ração Anais da ESALQ
Graner,E. A..
This paper deals with experiments on the yolk color of chicken eggs. The results obtained can be summarized as follows: a) no differences were observed when different breeds (S. C. W. Leghorn and Rhode Island Red) were fed whith the same ration: yellow corn grains or green feed. b) 30% of yellow corn grain (orange or yellow) in the ration are sufficient to give satisfactory color to the yolk eggs.
Tipo: Info:eu-repo/semantics/article
Ano: 1950 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0071-12761950000100005
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Etude préliminaire de la Sardine du secteur de La Rochelle ArchiMer
Letaconnoux, Robert.
Tipo: Text
Ano: 1950 URL: http://archimer.ifremer.fr/doc/00414/52574/53415.pdf
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Evolution et progrès récents des procédés de fabrication des conserves de poisson en France ArchiMer
Boury, Maurice.
Nous allons considérer l'évolution de l'industrie française de la conserve de poisson, en nous plaçant essentiellement au point de vue technique et en insistant particulièrement sur les progrès récents et les méthodes actuelles.
Tipo: Text
Ano: 1950 URL: http://archimer.ifremer.fr/doc/00022/13303/10351.pdf
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Far-Eastern Wartime Publications on Malaysian plants III Naturalis
NN.
On request of the Army, several voluminous bibliographies nave been published in Japan during the war. Advanced scientists accomplished the work in collaboration with teams of students by using Japanese libraries. The first of these bibliographies appeared in 1942, the last in 1944. They were apparently already planned before the war and intended to form one of the sources of information for the Intelligence Service. They were published under the general title ’Bibliographic Index for the study of the natural resources of the Great Asia co-prosperity sphere’ and compiled by the Department of Education, Dai Nippon.
Tipo: Article / Letter to the editor
Ano: 1950 URL: http://www.repository.naturalis.nl/record/533057
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Feeder Cattle Costs and Returns 1940-1949 AgEcon
Tyvand, J.A.; Nodland, Truman R.; Pond, George A..
Tipo: Report Palavras-chave: Livestock Production/Industries.
Ano: 1950 URL: http://purl.umn.edu/109368
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Fresno County, Agricultural Commissioners’ Crop Reports, 1940-1950 AgEcon
Includes individual reports from each year for 1940-1950
Tipo: Report Palavras-chave: Agriculture; Statistics; Crop Production/Industries.
Ano: 1950 URL: http://purl.umn.edu/56416
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Fundamentele vragen van de bijzondere plantkunde en de plantengeografie Naturalis
Lanjouw, J..
Zeer geachte Toehoorderessen en Toehoorders, Bij het beginnen van een wetenschappelijk onderzoek zal meestal degene die zich daaraan gezet heeft, allereerst het antwoord dienen te vinden op enkele fundamentele vragen. Zijn deze primaire vragen beantwoord, dan is de weg gebaand voor verder onderzoek en voor algemene theoretische beschouwingen. Deze fundamentele vragen zijn echter niet voor elke onderzoeker en ook niet voor elk onderzoek in een zelfde tak van wetenschap steeds gelijk. Dit hangt af van vele factoren, zoals: uiteindelijk doel van de studie, aard van het materiaal, geaardheid vooral van de onderzoeker, enz. Vandaag wil ik met U behandelen de hoofdvragen, die zich bij mij, voor de aan mij toevertrouwde onderdelen van de botanie steeds op de...
Tipo: Article / Letter to the editor
Ano: 1950 URL: http://www.repository.naturalis.nl/record/535116
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Further Notes on the Ampullae of Millepora Naturalis
Boschma, H..
After a prolonged scrutiny of numerous colonies of Millepora in the collections of various museums I found, besides a number of colonies with open ampullae, ten specimens possessing ampullae with their coverings of a trabecular network. The chief details of these ampullae were described in a previous paper (Boschma, 1949 a). Afterwards I had the good fortune to obtain material of different species of Millepora from six localities showing ampullae in an undamaged state. These ampullae are figured and described in the present paper. I am greatly indebted to Mr. Harold Gatty of Suva, who enabled me to visit coral reefs in the Fiji Islands during the time I stayed in this locality (March, 1949). I want to thank Dr. C. H. Edmondson, curator, Bernice P. Bishop...
Tipo: Article / Letter to the editor Palavras-chave: 42.72.
Ano: 1950 URL: http://www.repository.naturalis.nl/record/317929
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Genética de Coffea: XIII - Hereditariedade do caraterístico erecta em Coffea arabica L. Bragantia
Carvalho,A.; Krug,C. A..
In the present paper the authors present the results of a genetic study concerning the erecta type of growth of the lateral branches of Coffea arabica L. The erecta mutant, which probably originated in Java, differs from normal coffee plants by having upright growing lateral branches instead of plagiotropic ones. However, in spite of the fact that both, the main shoot and the lateral branches grow in the same direction, the dimorphic nature of the branches still persists. The genetic studies carried out since 1933, which included the study of progenies of F1, F2 generations and backcrosses, have revealed that the erecta character is conditioned by one pair of dominant genes Er Er. It is not yet known whether all erecta plants, of different origins, have...
Tipo: Info:eu-repo/semantics/article
Ano: 1950 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051950001100001
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Gustav Albert Stiasny Naturalis
Vervoort, W..
Gustav Albert Stiasny was born in Vienna (Austria) on December 10th, 1877. After he had attended the elementary and grammar schools there and having finished a one year course of lectures in commercial enterprise, Stiasny enlisted as a volunteer with the Austro-Hungarian army. A year later he left the army after he had obtained his commission, to take up an appointment with his father's commercial business. Young Stiasny, who was much interested in Natural History, soon left his father's affairs to give himself completely to the study of Zoology, Botany and Geology. For that purpose he attended lectures at the universities of Vienna and Jena. As about that time such celebrities as Hatschek, Grobben, Haeckel, et al., were lecturing there it is no wonder...
Tipo: Article / Letter to the editor Palavras-chave: 42.01.
Ano: 1950 URL: http://www.repository.naturalis.nl/record/318083
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Harietella simulans (T. Scott, 1894), a commesal Copepod on Limonoria lignorum (Rathke) Naturalis
Vervoort, W..
In April 1949 Mr. J. A. W. Lucas, a student of Biology and a careful collector of marine animals, supplied the Rijksmuseum van Natuurlijke Historie at Leiden with some specimens of Limnoria lignorum (Rathke), found in logs of wood washed ashore near Katwijk. These Isopods proved to be infested by a small Harpacticoid Copepod and by a species of Ostracod. These animals were occasionally observed on the oral appendages and the legs. The Copepods were attached to various parts of the carapace, usually the telson, and were very small (about 0.5 mm) and the identification met with considerable difficulties. They proved to be identical, at last, with Harrietella simulans (T. Scott, 1894), a species known from the Firth of Forth and the Firth of Clyde in Great...
Tipo: Article / Letter to the editor Palavras-chave: 42.74.
Ano: 1950 URL: http://www.repository.naturalis.nl/record/318810
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Himenomicetos Brasileiros: V. Polyporaceae-2 Bragantia
Teixeira,A. R..
Tipo: Info:eu-repo/semantics/other
Ano: 1950 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051950000400003
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II Congresso Sul-Americano de botânica de Tucumán (República Argentina) Anais da ESALQ
Accorsi,Walter Radamés.
Tipo: Info:eu-repo/semantics/article
Ano: 1950 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0071-12761950000100018
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Inativação do vírus do mosaico comum do fumo pelo filtrado de culturas de Trichoderma sp Bragantia
Forster,R..
Trichoderma sp. grown in liquid medium produced a substance which has caused up to 90% reduction in the infection capacity of the tobacco mosaic virus, measured in number of local lesions on Nicotiana glutinosa half leaf inoculations. Under the present experiments the fungus has been grown in liquid medium and the filtrates used in inactivation tests on the virus. From the fact that the liquid filtrate showed inactivation power after only two days of culture it is concluded that the inactivation is of the nature of a secretion of the fungus into the liquid medium. The inactivation proceeded within 2 minutes after mixture of the culture extract with the virus, no better results were obtained if the mixtures allowed to stand for a longer period of time. If...
Tipo: Info:eu-repo/semantics/article
Ano: 1950 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051950000500002
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Industrial revolution in Mexico Buscador Latinoamericano
Tipo: Text Palavras-chave: DESARROLLO; INDUSTRIAS; MANUFACTURAS.
Ano: 1950 URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=3183&tab=opac&oai:flacso.org.ec:3183
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Introduction Naturalis
NN.
The second instalment of the Flora Malesiana was published in December 1949. It contains pp. xli – clxi ana 41-140, and c. 160 illustrations. The total issue is fixed at 1000 copies of each instalment. At the present moment more than 550 subscriptions have been received. It seems that the future of Flora Malesiana is assured. The second instalment of volume 4 contains the final part of the ’General Considerations’, by the general editor, ’A short history of Malaysian phytography’, by Dr H.C.D. de Wit, and revisions of Malaysian, plant families by Dr C.A. Backer, Dr P. Buwalda. and by Dr C.G.G.J. van Steenis.
Tipo: Article / Letter to the editor
Ano: 1950 URL: http://www.repository.naturalis.nl/record/533188
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Investigações sôbre a tristeza dos Citrus: VI - Alguns estudos fisiológicos sôbre a moléstia Bragantia
Grant,T. J.; Costa,A. S.; Mendes,H. C.; Paiva Neto,J. E. de; Catani,Renato A..
The present paper reports the results of general studies undertaken to determine the relative importance of soil moisture and light on symptom expression of the tristeza disease. It also includes data on the effects of the disease on transpiration and chemical composition of infected plants and records the results of attempts to inactivate the tristeza virus in budwood by means of hot water and chemical treatments. In the present tests, using potted plants, tristeza disease symptoms were observed to occur eight to ten weeks after inoculation on plants maintained in standing water and on those having a daily application of 200cc of water. In contrast to this relatively rapid and positive symptom expression, it required 28 weeks before definite advanced...
Tipo: Info:eu-repo/semantics/article
Ano: 1950 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051950000200002
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La seguridad social estudio internacional Buscador Latinoamericano
Oficina Internacional del Trabajo.
Tipo: Text Palavras-chave: SEGURIDAD SOCIAL.
Ano: 1950 URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=3269&tab=opac&oai:flacso.org.ec:3269
Registros recuperados: 204
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