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  • 1955-1959  (10)
  • 1950-1954  (2)
Collection
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Analytical chemistry 31 (1959), S. 1746-1746 
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 6 (1955), S. 223-227 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Surface Protection of Work Pieces in the Manufacturing Prozesses of Mechanical EngineeringUnprotected surfaces of work pieces especially coarse surfaces of cast iron are usually rusting and contaminating easily.Their cleaning is as well most difficult as expensive for under these conditions really clean surfaces scarcely can be obtained.The costs for varnishing depend on the adhesiveness of the first coat of paint. Economical painting-methods can rarely be applied to work pieces if these are mechanically worked upon already.Therefore early surface protection of cast iron can be of great advantage as the charges for surface cleaning are decreased and the endurance of the coat of paint is improved. It also helps to improve cleanliness and hygiene of work.Two examples show the procedure and the advantage of ground-coating in the manufacturing prozesses of mechanical engineering.
    Notes: Ungeschützte Werkstückoberflächen setzen in der Regel Rost an und verunreinigen schnell, insbesondere dort, wo es sich um rauhe Gußoberflächen handelt. Die Reinigung ist dann meist schwierig und auch teuer. Wirklich saubere Oberflächen werden aber auch dann nur selten erzielt.Mit dem Haftvermögen des ersten Farbauftrages steht oder fällt der Aufwand für die Lackierung. In den Fällen, in denen die mechanische Bearbeitung des Stückes bereits erfolgte, ist die Benutzung rationeller Farbauftrags-Verfahren nur selten möglich. Ein frühzeitiger Oberflächenschutz des Gusses kann deshalb sehr vorteilhaft sein. Er senkt die Kosten für Oberflächenreinigung und erhöht die Haltbarkeit des Farbauftrages. Er verbessert außerdem die Arbeitshygiene und fördert die Sauberkeit im Betrieb.An zwei Beispielen werden der Aufwand und die Vorteile des Grundanstrichs im Fabrikationsablauf des Maschinenbaus aufgezeigt.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 1957-03-01
    Print ISSN: 0018-3768
    Electronic ISSN: 1436-736X
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Springer
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  • 4
    Publication Date: 1959-10-01
    Print ISSN: 0003-2700
    Electronic ISSN: 1520-6882
    Topics: Chemistry and Pharmacology
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  • 5
    Publication Date: 1956-07-01
    Print ISSN: 0006-3002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Published by Elsevier
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  • 6
    Publication Date: 1959-05-01
    Print ISSN: 0006-3002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Published by Elsevier
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  • 7
    facet.materialart.
    Unknown
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.9 (1958) nr.1 p.139
    Publication Date: 2015-03-06
    Description: For many years the monotypical genus Aesandra was incorporated in Payena (vide Lam 1925, 1927) or Madhuca (Bassia sensu Lecomte, 1930). Revising the genus Payena we came across specimens, that did not fit in the diagnosis of either genus; it appeared that the specimens in question showed a mixture of the characters of both Payena and Madhuca, and also some characters of their own. These we found to belong to what has been described as Aesandra. The only species is A. dongnaiensis Pierre, 1890. It is our impression that Aesandra is to be maintained as a separate genus of the Madhuceae (cf. Lam, Rec. Trav. Bot. Neerl. 36, 1939, 525). We examined material from the following herbaria: British Museum (Natural History) at London (BM), Rijksherbarium at Leiden (L) and Museum National d’Histoire Naturelle, Phanérogamie, at Paris (P) and are very much obliged to the authorities of these institutes for the loan of specimens and the hospitality enjoyed during our stay in 1955 at Paris and London.
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 8
    facet.materialart.
    Unknown
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 9 no. 1, pp. 139-142
    Publication Date: 2024-01-12
    Description: For many years the monotypical genus Aesandra was incorporated in Payena (vide Lam 1925, 1927) or Madhuca (Bassia sensu Lecomte, 1930). Revising the genus Payena we came across specimens, that did not fit in the diagnosis of either genus; it appeared that the specimens in question showed a mixture of the characters of both Payena and Madhuca, and also some characters of their own. These we found to belong to what has been described as Aesandra. The only species is A. dongnaiensis Pierre, 1890. It is our impression that Aesandra is to be maintained as a separate genus of the Madhuceae (cf. Lam, Rec. Trav. Bot. Neerl. 36, 1939, 525).\nWe examined material from the following herbaria: British Museum (Natural History) at London (BM), Rijksherbarium at Leiden (L) and Museum National d\xe2\x80\x99Histoire Naturelle, Phan\xc3\xa9rogamie, at Paris (P) and are very much obliged to the authorities of these institutes for the loan of specimens and the hospitality enjoyed during our stay in 1955 at Paris and London.
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 9
    facet.materialart.
    Unknown
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 9 no. 1, pp. 89-138
    Publication Date: 2024-01-12
    Description: Payena as a genus was created by Alphonse De Candolle in his Prodromus Systematis Naturalis Regni Vegetabilis in 1844. He commemorated in it the French chemist A. Payen (1795\xe2\x80\x941871) in Paris. De Candolle placed in it the species Mimusops lucida, first described by G. Don; the latter employed this nomen nudum used by Wallich in his List of specimens in the East India Company\xe2\x80\x99s Museum (1858). The famous Swiss botanist characterized the new genus by the following diagnosis on page 196: \xe2\x80\x9cCalyx 4-partitus (nec 8-partitus, ut dixit cl. G. Don), lobis ovatis, obtusis extus et margine puberulis, 2 exterioribus latioribus. Corolla 8-fida, basi tubulosa, superne campanulata, calyce vix longior; lobis 2 ante lobum quemque calycis, ovato-acutis, glabris. Stamina 8, tubo corollae prope faucem inserta, lobis opposita, denticulis interjectis. Filamenta brevissima. Antherae lanceolatae, angulosae, inclusae, filamento multo longiores, connectivo in acumen obtusiusculum carnosum producto, loculis subextrorsis, longitudinaliter dehiscentibus. Ovarium hirsutum, 8-loculare. Stylus rectus, glaber, calyee duplo longior, apice obscure dentatus. Ovula 8, ovoideo-angulosa, acuta, deinde ovoidea, ex angula superiore cujusve loculi pendentia. Fructus ign. \xe2\x80\x94 Frutex? aut arbuscula? foliis ellipticis, basi subacutis, apice obtuse acuminatis, glaberrimis, superne nitidis, subtus pallidioribus; pedicellis 1\xe2\x80\x943 ex axillis foliorum superiorum, petiolo duplo longioribus, erectis, pilis minimis adpressis subpubescentibus. \xe2\x80\x94\xe2\x80\x9d He placed it between Isonandra and Bassia and \xe2\x80\x9cperhaps near Azaola\xe2\x80\x9d (\xe2\x80\x9cforsanque Azaolae proximum\xe2\x80\x9d). Today Isonandra is to be considered a genus in the neighbourhood of Palaquium (a group with the parts of calyx and corolla isomerous), and Bassia and Azaola are considered synonymous to Madhuca. De Candolle, while correcting the evident mistake of Don concerning the number of parts of the calyx, makes himself another by saying \xe2\x80\x9cStamina 8...\xe2\x80\x9d (see under P. lucida).
    Repository Name: National Museum of Natural History, Netherlands
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  • 10
    facet.materialart.
    Unknown
    In:  Zoologische Mededelingen vol. 33 no. 11, pp. 69-73
    Publication Date: 2024-01-12
    Description: In the course of the year 1954 I received for identification a little Nematoceron belonging to the family Lycoriidae (Sciaridae). After a careful examination of the material and the literature I arrived at the conclusion that my specimens represented a hitherto undescribed species. It belongs to the genus Neosciara Pettey, 1918 (sensu Lengersdorf, 1930 and Frey, 1942).\nThere is some confusion about the naming and delimitation of the genera in the subfamily Lycoriinae. The four most important opinions are : I. Lengersdorf (1930) : Genus Lycoria Meigen, 1800, syn. Saara Meigen, 1803, Gruppe I (no name, veins cu and m with bristles) and Gruppe\nII\nNeosciara Pettey, 1918 (cu and m bare).\nII. S\xc3\xa9guy (1940) : Genus Lycoria Meigen, 1800 (cu and m with bristles) and S ciara Meigen, 1803 (veins cu and m bare).\nIII. Frey (1942) : Genus Sciara Meigen, 1803, syn. Lycoria Meigen, 1800 (cu and m with bristles) and genus Neosciara Pettey, 1918 (cu and m without bristles).\nIV. Frey (1948): Genus Sciara Meigen, 1803 (cu and m with bristles) and genus Bradysia Winnertz, 1867, containing the subgenus Neosciara Pettey, 1918.\nThe character concerning the bristles on the veins cu and m is very important for distinguishing these genera. When summarizing the above opinions we find that the species with bristles on cu and m have been named Lycoria Meigen, 1800 = Sciara Meigen, 1803 (Lengersdorf, 1930) ; Lycoria Meigen, 1800 (S\xc3\xa9guy, 1940) ; Sciara Meigen, 1803 = Lycoria Meigen, 1800 (Frey, 1942, 1948). The species lacking setae on the veins cu and m have been named Neosciara Pettey, 1918 (Lengersdorf, 1930, Frey, 1942) ; Sciara
    Repository Name: National Museum of Natural History, Netherlands
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