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| Registros recuperados: 220 | |
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| Vloten, Roger van. |
| The border region between Coahuila and Zacatecas is part of the mountainous country south of Parras in northeastern Mexico. It includes a thickness of about 2,600 meters of Jurassic and Cretaceous rocks that were deposited along the northern border of the Mexican geosyncline along the southern margin of the Coahuila Peninsula massif. During early Tertiary time these sediments were compressed into folds parallel to the borders of the massif. The majority of the anticlines in the area mapped is overturned to the north. After the compressive stage a tensional stage developed and a system of tensional faults was formed. Block faulting found place on a large scale. A suggestion by de Sitter that some longitudinal faults may be comparable to schistosity planes... |
| Tipo: Article / Letter to the editor |
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| Ano: 1954 |
URL: http://www.repository.naturalis.nl/record/505685 |
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| NN. |
| West-Indië heeft zijn naam te danken aan een vergissing. Een grootse vergissing overigens, want toen Columbus in 1492 Amerika ontdekte, meende hijzelf dat hij de Oostelijke eilanden van de Indische Archipel had gevonden. Het verhaal gaat, dat bij de eerste eilanden die Columbus bezocht, ook St. Maarten was (11 November 1492, d.i. op St. Maarten’s dag). Al gauw moet men hebben bemerkt dat dit nog niet de gezochte (Oost)-Indische eilanden waren. Latere expedities hebben het pogen langs deze weg Oost-Indië te bereiken voortgezet, wat tot gevolg had dat reeds in 1498 het vasteland van Zuid-Amerika (o.a. de monding van de Orinicorivier en Suriname) door Spaanse ontdekkingsreizigers werd betreden. Curaçao werd in 1499 ontdekt door Alonso de Ojeda. Zowel de... |
| Tipo: Article / Letter to the editor |
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| Ano: 1954 |
URL: http://www.repository.naturalis.nl/record/504811 |
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| Reyne, A.. |
| In 1950 I received from Mr. D. Hille Ris Lambers a strange Pseudococcid from Java which had been collected by Mr. F. W. Rappard, a senior forestry officer, who regularly collects aphids for Mr. Hille Ris Lambers on his tours of duty. As this insect was a coccid, it was transmitted to me for examination. Its appearance is quite abnormal; the shape of its body reminds one almost of a large mite (fig. 4). The 6-segmented antennae have a dense vestiture of fine hairs, with exception of the 2 first segments which are very short. A tuft of 5 very long setae is present on the top of each of the anal lobes. The ungual digitules are extremely large and very flat. It was only after close study that the insect was recognized as a Pseudococcid. It has 2 pairs of... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.75. |
| Ano: 1954 |
URL: http://www.repository.naturalis.nl/record/319158 |
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| Ladouce, Rémy; Le Dantec, Jean. |
| On constate souvent, surtout l'été, une mortalité anormale des huîtres dans les bassins, claires, dégorgeoirs ou dépôts, dont l'eau n'est renouvelée qu'à intervalles assez longs. Les ostréiculteurs ont l'habitude d'incriminer uniquement la chaleur, mais les essais de M. BOURY, en 1927, et de l'un de nous, en 19536, montrent qu'en définitive cette mortalité est provoquée, en grande partie, par le manque d'oxygène. |
| Tipo: Text |
Palavras-chave: Ostréiculture; Huître; Oxygène; Bassin ostréicole; Recommandation. |
| Ano: 1954 |
URL: http://archimer.ifremer.fr/doc/00003/11470/8029.pdf |
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| Stolk, Anth.. |
| The problem of the retardation of the processes of growth and differentiation is certainly as important as the processes of growth and differentiation themselves. It is striking, therefore, that whereas the analysis of growth has been carried out for a considerable period of time already, the analysis of inhibition was only commenced a few decades ago. It has to be admitted that Wiesner (1894) succeeded in demonstrating the presence of a substance retarding germination in the slime of the mistletoe (Viscum album), but this remained a solitary observation for some time. About 1920 a series of important publications appeared which deal with inhibiting substances. Oppenheimer (1922) discovered a substance of this kind in the fruit pulp of ripe tomatoes,... |
| Tipo: Article / Letter to the editor |
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| Ano: 1954 |
URL: http://www.repository.naturalis.nl/record/504839 |
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| Parish, Ross M.. |
| This article is concerned with certain aspects of the entrepreneurial behaviour of wheat farmers - in particular, with their adoption of new techniques and means of production. The study is based on data secured in the course of a field investigation carried out late in 1953, in which forty-eight wheat farmers, residing in a particular locality in northern New South Wales, were interviewed. The primary aim of the investigation was not to estimate the extent to which particular technological innovations are being adopted throughout the wheat belt, or in any particular part of it. Its aim was, rather, to gain some idea of the factors which influence farmers in either adopting or not adopting a particular innovation, or innovations in general. In other... |
| Tipo: Journal Article |
Palavras-chave: Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 1954 |
URL: http://purl.umn.edu/8840 |
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| Audouin, Jacques. |
| Plusieurs auteurs, en particulier Faideau, Bluteau, Lambert, Dubreuil, etc... ont déjà donné de nombreux détails sur la mytiliculture et sur les bouchots à moules de la Baie de l'Aiguillon. Afin que cette note donne une vue d'ensemble sur la mytiliculture, nous avons été amenés à reprendre et à résumer les données exposées par eux. Nous avons, en outre, ajouté certains détails de la technique employée par les boucholeurs. Nous nous sommes efforcés d'apprécier l'évolution qui s'est manifestée depuis une trentaine d'années. Cette étude comprend deux parties principales : Origine et forme des bouchot - Mode d'exploitation. |
| Tipo: Text |
Palavras-chave: Mytiliculture; Baie Aiguillon; Histoire; Bouchot; Croissance; Moule. |
| Ano: 1954 |
URL: http://archimer.ifremer.fr/doc/00003/11464/8024.pdf |
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| Boury, Maurice. |
| Il y a un siècle, le savant naturaliste COSTE concevait les principes d'une technique ostréicole complète et/en faisant la démonstration pratique. Né en 1807 à Castries (Hérault), mort en 1873, Jean Coste entra à l'Académie des Sciences en 1851. Il fut également membre de l'Académie de Médicine et professeur au Muséum puis au Collège de France; il fonda le laboratoire de zoologie et physiologie maritimes de Concarneau et en fut le premier directeur. En 1892, il se vit confier la charge d'inspecteur général de la pêche fluviale et de la pêche côtière maritime. Dans le domaine qui nous intéresse particulièrement, l'ouvrage de Coste le plus fréquemment cité est le récit commenté et accompagné de suggestions qui porte sur tire : "Voyage d'exploration sur le... |
| Tipo: Text |
Palavras-chave: Ostréiculture; Jean Coste; Histoire; Production huîtrière; Huître. |
| Ano: 1954 |
URL: http://archimer.ifremer.fr/doc/00002/11325/7862.pdf |
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| Registros recuperados: 220 | |
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