In this paper we report in situ high-energy x-ray diffraction studies and differential scanning calorimetry measurements during structural transformation of die-cast Nd{sub 60}Fe{sub 30}Al{sub 10} ...bulk samples. The real-time evolution of the structure was recorded as a function of temperature allowing to follow the grain growth and the crystallization of the amorphous matrix which take place in the system. The two processes could be independently investigated by the two different experimental methods, while the theoretical models used for the data interpretation allow us to calculate their activation energies, to separate the grain growth process from the glass transition, and to obtain the continuous heating transformation diagram of the Nd{sub 60}Fe{sub 30}Al{sub 10} system. The relevance of the combination of these two techniques for the investigation of metallic glasses or complex composite materials is discussed.
The Virtual Laboratory (VLab) is focused on providing same-time different-place group-interactions, allowing full real-time virtual-interaction of voice/video/data information of the Internet, ...communication systems, and multimedia equipment and facilities for vision disabled persons. The VLab interactive-monitor uses piezoelectric technology for graphical display and includes a novel braille markup language (BML) interface with the wireless application protocol (WAP) and the hyper-text mark-up language (HTML). The BML interface enables conversion of all types of existing web sites and facility/equipment control information to be displayed on the VLab interactive Braille monitor.
Inheritance of thermo-sensitive genic male sterility in rice [Oryza sativa L.] Latha, R. (Tamil Nadu Agricultural Univ., Coimbatore (India). Centre for Plant Breeding and Genetics); Thiyagarajan, K. (Tamil Nadu Agricultural Univ., Coimbatore (India). Centre for Plant Breeding and Genetics); Senthilvel, S. (Tamil Nadu Agricultural Univ., Coimbatore (India). Centre for Plant Breeding and Genetics)
Journal of Genetics and Breeding (Italy),
(Mar 2003), Letnik:
57, Številka:
1
Magazine Article
The inheritance of thermo-sensitive genic male sterility in TGMS lines, viz. TS 6, TS 16, TS 18, TS 29, TS 46 and TS 47, was studied using F1, F2 and test cross generations of the crosses between ...TGMS lines and non-TGMS male fertile genotypes, viz. IR 68281B and MRST9. All the F1s were fertile and segregation of pollen fertility in F2 and test cross generations involving TS 6 and TS 29 was in the ratio of 3 fertile: 1 sterile and 1 fertile: 1 sterile, respectively. This indicated that the TGMS trait in these two lines was controlled by a single recessive gene. Segregation for fertility in F2 and test cross generations of the other TGMS lines, viz. TS 16, TS 18, TS 46 and TS 47, was in the ratio of 15 fertile: 1 sterile and 3 fertile: 1 sterile, respectively. This showed that double recessive genes with duplicate interaction controlled the TGMS in these lines. However, these lines were derived from Norin PL 12, in which TGMS was reported to be inherited as single recessive. The deviation may be due to the significant influence of genetic background on the expression of TGMS or due to the presence of a strong fertility modifier complex in their pollen parents, which could mask the effect of TGMS genes
È stata studiata l´ereditarietà della sterilità genica maschile sensibile alla temperatura in linee TGMS, cioè TS 6, TS 16, TS 18, TS 29, TS 46 e TS 47, utilizzando generazioni F1, F2 e di incroci test degli incroci fra linee TGMS e genotipi a fertilità maschile non TGMS, cioè IR68281B e MRST9. Tutte le F1 erano fertili e la segregazione della fertilità del polline nelle generazioni F2 e degli incroci test interessanti TS 6 e TS 29 risultava in rapporto di 3 fertili : 1 sterile e di 1 fertile : 1 sterile, rispettivamente. Questo indicava che il carattere TGMS in queste due linee era controllato da un singolo gene recessivo. La segregazione per la fertilità nelle generazioni F2 e degli incroci test delle altre linee TGMS, cioè TS 16, TS 18, TS 46 e TS 47, era in rapporto di 15 fertili : 1 sterile e di 3 fertili : 1 sterile, rispettivamente. Questo dimostrava che geni doppio recessivi con interazione duplicata controllavano la TGMS in queste linee. Tuttavia, queste linee erano derivate da Norin PL 12, nella quale è stata riportata un´ereditarietà della TGMS come singolo recessivo. La deviazione può essere dovuta all´influenza significativa dell´assetto genetico sull´espressione della TGMS o alla presenza di un forte complesso modificatore della fertilità nei loro parentali pollinici, che potrebbero mascherare l´effetto dei geni TGMS.
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