7,005 research outputs found
Phytophthora disease of English ivy In Taiwan
No full textA total of 25 isolates (9 Al : 16 A2) of Phytophthora palmivora were isolated from diseased tissues of English ivy in 7 fields in Taiwan, recently. P. palmivora attacked the whole ornamental plants including leaves, stems, and roots. Infected leaves became bleached, water soaking and dropped. Infected stem tissues turned bleached and browning. The affected plants dropped and wilted, and eventually died if basal stems or main roots were infected. Disease generally occurred under moist conditions and was especially serious during rainy seasons. On the inoculated plants, all test isolates of P. palmivora caused symptoms similar to those occur under natural field conditions in pathogenicity tests. P. palmivora was reisolated from the diseased tissues of inoculated plants. Isolates of P. palmivora from ivy grew on V-8 agar medium ranging from 12 to 35 ℃ and the optimum growth temperatures were 27-30 ℃ . All Taiwanese ivy isolates of P. palmivora belong to the typical types. Phytophthora disease of English ivy was reported the first time in Taiwan
Past veterinarians in South Africa
Get PDFAn alphabetical list containing short biographies of all deceased South African veterinarians up to 1990.[compiled by] P.J. (Bill) PosthumusVolume 1: AL -- Volume 2: M-ZAlso available in print http://137.215.9.20/record=b1893606ab2013ab201
Open brief aan den WelEdel. Gestr. Heer P.J. Joubert
No full textleyds-70-7201.pdf created from original pamphlet in the WJ Leyds Collection held in the Africana Section of the Stellenbosch University Library and Information Service.Dutch open letter to P.J. Joubert concerning a railroad concession granted to the author and two of his friends in 1885
Design, Modeling and Simulation of a 52MHz MEMS Gyroscope Device in 1.5um SOI
No full textIn this thesis , a simulation model of a MEMS gyroscope is presented. The model enables mode matching and analysis of the dynamic behavior of a gyroscope. Furthermore, the model allows the optimization the design parameters of the gyroscope. The simulated gyroscope operates at a frequency of 52MHz with amplitudes of 10nm and quality factor of 50,000. Finally, the drive mode measurements are presented at different bias voltages.Microelectronics & Computer EngineeringElectrical Engineering, Mathematics and Computer Scienc
Het gemeentelijk Investeringsraadsel: Het verband tussen gemeentelijke investeringen en lokale welvaartsontwikkeling
No full textDit proefschrift gaat over de vraag in hoeverre in Nederland de lokale welvaartsontwikkeling wordt bepaald door de gemeentelijke investeringsinspanning. Op project niveau is meestal wel het een en ander bekend over de maatschappelijke effecten, maar over de impact van de totale investeringsinspanning ontbreekt zowel fundamentele als toepasbare kennis. Het is een raadsel dat nog opgelost dient te worden. De doelstelling van dit proefschrift is daaraan een bijdrage te leveren.Housing System
Coupled thermo–hydro–mechanical processes for the Dutch radioactive waste repository
No full textDisposal of spent nuclear fuel and long lived radioactive waste in deep clay geological formations is one of the promising options worldwide. In this concept of the geological disposal system, the Boom Clay is considered as a potential host rock when designing a generic waste repository in the Netherlands. For design and evaluation of a repository for geologic disposal of nuclear wastes one of its principal concern is the thermal loading. High-level radioactive waste and spent fuel generate considerable amounts of heat. When those waste types are disposed in a geological repository the elevated thermal effect on the behaviour of soils surrounding nuclear waste disposal give rise to change in hydraulic and mechanical properties is a significant factor for repository design. Understanding these time-dependent phenomena processes in relation to both the effects of pore water dissipation and of the thermal expansion is essential for reliably assessing repository performance and evaluating the safety case. This paper presents some of the investigation on the thermal processes with emphasis on the coupled Thermo-Hydro- Mechanical (THM) processes for the disposal concept of a radioactive waste disposal facility, in Boom Clay at a depth of about 500m.Geo-engineerin
Cenchrus setaceus Morrone, Ann. Bot. (Oxford
No full textCenchrus setaceus (Forssk.) Morrone, Ann. Bot. (Oxford) 106: 129 (2010). Distribution: N. Africa to Afghanistan and Tanzania Specimens: MOSHI Lake Chala, Bigger, M. 1991 (K); Lake Chala, Greenway, P.J. 4450 (K); Lake Chala, Hemp, A. 659 (NHT, UBT); Lake Chala, Hemp, A. s.n. (UBT); Lake Chala, Hitchcock, A.S. 24677 (K).Published as part of Prunera-Olivé, Joan, Vorontsova, Maria S., Williams, Emma V., Mollel, Neduvoto P. & Hemp, Andreas, 2021, Checklist of Kilimanjaro grasses shows that both plot and herbarium methods are necessary to record diversity, pp. 201-244 in Phytotaxa 501 (2) on page 218, DOI: 10.11646/phytotaxa.501.2.1, http://zenodo.org/record/542481
Cenchrus clandestinus Morrone, Ann. Bot. (Oxford
No full textCenchrus clandestinus (Hochst. ex Chiov.) Morrone, Ann. Bot. (Oxford) 106: 127 (2010). Distribution: Eritrea to S. Trop. Africa Specimens: MOSHI Fau (near Mashame), Haarer, A.E. 1017 (K); Kilimanjaro Timbers, Grimshaw, J.M. 93481 (K); Marangu-Mandara track, Njau, E. 432 (NHT); Mawie stream, Greenway, P.J. 3094 (K, MO); Old Moshi, Hemp, A. 1047 (NHT, UBT).Published as part of Prunera-Olivé, Joan, Vorontsova, Maria S., Williams, Emma V., Mollel, Neduvoto P. & Hemp, Andreas, 2021, Checklist of Kilimanjaro grasses shows that both plot and herbarium methods are necessary to record diversity, pp. 201-244 in Phytotaxa 501 (2) on page 217, DOI: 10.11646/phytotaxa.501.2.1, http://zenodo.org/record/542481
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