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Subramanian, C. V.
- The Classification of the Hyphomycetes
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Affiliations
1 Department of Botany, University of Rajasthan, Jaipur, IN
1 Department of Botany, University of Rajasthan, Jaipur, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 4, No 1-4 (1962), Pagination: 249-259Abstract
The classification of the Hyphomycetes is discussed with special reference to spore types conidiophore behaviour and initiation and development of spores. Eight basic morphological spore types are recognized : the blastospore, the gangliospore, the phialospore, the porospore, the arthrospore, the meristem-arthrospore, the spiculospore and the chlamydospore. No taxonomic significance is attached to the chlamydospore. It is pointed out that the forms now placed in the Mucedinaceae the Dematiaceae, the Tuberculariaceae and the Stilhaceae of Saccardo may be placed in six Families as suggested by the author earlier : (i) the Torulaceae (Type genus, Tonila Pers. ex Fries) for forms producing blastospores ; (ii) the Bactridiaceae (Type genus, Bactridium Kunze ex Fries) for those producing gangliospores ; (iii) the Tuberculariaceae (Type genus, Tubercularia Tode ex Fries) for those producing phialospores ; (iv) the Helminthosporiaceae (Type genus, Helminthosporium Link ex Fries) for those producing porospores ; (v) the Geotrichaceae (Type genus, Geotrichum Link ex Sacc.) for those producing arthrospores ; and (vi) the Coniosporiaceae (Type genus, Coniosporium Link ex Fries) for those producing meristem-arthrospores. The Families are subdivided into Sections on the basis of characters of the conidiophore related to spore initiation and development, the presence or absence and nature of "sporogenous cells", the presence or absence of "separating cells" and certain distinct modes of spore formation which are outlined. Twenty-four Sections are delimited and tentatively keyed out : thirteen in the Torulaceae, four in the Bactridiaceae, two each in the Tuberculariaceae the Helminthosporiaceae and the Geotrichaceae, and one in the Coniosporiaceae. A separate Section is provisionally suggested for forms producing spiculospores. Typical examples of genera for each Section are given together with illustrations. Some of the difficulties still requiring solution are mentioned, including those relating to speculations about the classification of the Hyphomycetes vis-a-vis their perfect stages so far as known. It is emphasized that critical and thorough studies on generic types inadequately or imperfectly understood are an urgent necessity.- John Webster (1925–2014)
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Authors
Affiliations
1 A-8, Damayanthi Apartments, 17 South Mada Street, Nungambakkam, Chennai 600 034, IN
1 A-8, Damayanthi Apartments, 17 South Mada Street, Nungambakkam, Chennai 600 034, IN
Source
Current Science, Vol 108, No 7 (2015), Pagination: 1386-1387Abstract
No Abstract.- Conventional and Advanced Non-Destructive Test Techniques for Evaluation of Welds
Abstract Views :392 |
PDF Views:4
Authors
Affiliations
1 Division for PIE & NDT Development, Indira Gandhi Centre for Atomic Research, Kalpakkam, IN
1 Division for PIE & NDT Development, Indira Gandhi Centre for Atomic Research, Kalpakkam, IN
Source
Indian Welding Journal, Vol 23, No 2 (1991), Pagination: 64-75Abstract
Non-destructive Testing (NDT) is an integral and the most important constituent of the Quality Assurance (QA) programme of any industry. The objectives of the QA programmes are safety, reliability and economy. Non-destructive evaluation (NDE) places due emphasis on characterisation of material including quantitative determination of the size, shape and location of a defect or anomaly thus enabling evaluation of structural integrity of a component.- Research and Development Activities in Quality Assurance of Welded Components at Indira Gandhi Centre for Atomic Research, Kalpakkam, India
Abstract Views :204 |
PDF Views:4
Authors
Affiliations
1 Division for Post-Irradiation Examination and NDT Development, IN
1 Division for Post-Irradiation Examination and NDT Development, IN
Source
Indian Welding Journal, Vol 22, No 4 (1990), Pagination: 148-161Abstract
Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam, India, is engaged in multidisciplinary R&D efforts in welding technology relevant to Fast Breeder Reactor Programme of the Country. R&D efforts initiated in the year 1974 have matured into groups with strong scientific and technological base in areas of design, processes and characterisation through complementary use of destructive and nondestructive test techniques.- Testing Measurement and Control of Welds-A View Point
Abstract Views :247 |
PDF Views:4
Authors
Affiliations
1 Indian Institute of Welding, IN
1 Indian Institute of Welding, IN
Source
Indian Welding Journal, Vol 19, No 4 (1987), Pagination: 259-261Abstract
Welding is an important means to fabricate structures and components from a wide spectrum of materials, of varied complexity and thickness ranges. Welds can be made with properties appropriate for service conditions. The requisite quality can be achieved based on adequate and appropriate testing, measurement and control of welds.- Design and Analysis of Solar Passive Architecture for Thermal Comfort of Residential Buildings in Warm-Humid Climate of Thanjavur Region
Abstract Views :179 |
PDF Views:0
Authors
Affiliations
1 Department of Architecture, Periyar Maniammai University, Thanjavur - 613403, Tamil Nadu, IN
2 Department of Civil Engineering, Periyar Maniammai University, Thanjavur - 613403, Tamil Nadu, IN
1 Department of Architecture, Periyar Maniammai University, Thanjavur - 613403, Tamil Nadu, IN
2 Department of Civil Engineering, Periyar Maniammai University, Thanjavur - 613403, Tamil Nadu, IN