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Articles by M. Luo
Total Records ( 2 ) for M. Luo
  A.M.A. Salim , H.P. Pan , M. Luo and F. Zhou
  Delineation of lithology and mineralization of different rock units of the Chinese Continental Scientific Drilling Main Hole (CCSD-MH), Eastern China, is the main objective of this study. Different logging operations were conducted in the studied area. Subduction and metamorphism lead to high compressional wave velocity (Vp) and low neutron density (CNL) values of different rocks. Eclogites and ultramafics show high bulk density (DEN) and photoelectric index (Pe) values, due to their high content of heavy and basic minerals. Gneisses are more radioactive (GR) and resistive (RD), since they have high feldspar content. Serpentinization causes in high CNL values of ultramafics. Retrogression of eclogites to amphibolite facies detected from the general decrease of DEN, Pe, Vp and RD and increase of GR and CNL values. This is mainly due to the secondary alteration and break down of heavy and basic minerals to retrograde materials such as amphibole, mica, zoisite and quartz during exhumation process. Shearing of paragneisses lowers their Vp values. Generally mineralization increases DEN, Pe of eclogites and decreases their GR value and decreases DEN, Pe of the gneisses and increases their GR readings.
  X.Q. Liang , M. Luo and B.Z. Guo
  Preharvest aflatoxin contamination in peanut is a serious and world-wide problem concerning food safety and human health. Aflatoxin contamination is known to be influenced by numerous factors. Drought and high temperatures are conducive to Aspergillus flavus infection and aflatoxin contamination. Plant-host resistance is a highly desirable tactic that can be used to manage this problem. Screening, identification and field evaluation of germplasm for resistant traits are important techniques. This review summarizes research progress in the area of host resistance mechanisms to aflatoxin contamination in peanut. Resistance mechanism in peanut to aflatoxin contamination has been studied for nearly 30 years. Some resistance mechanisms and resistant factors have been reported to contribute to the resistance to aflatoxin-producing fungi, but no effective efforts have been made to breed for these traits because the mechanisms to resistance traits might not be still fully understood. Future researches are expected to use advanced biotechnology to understand the comprehensive mechanisms governing the resistance pathways in order to use the information in breeding programs for crop improvement and control of preharvest aflatoxin contamination. The risk of aflatoxin contamination could be prevented before the contaminated grains get into the food chain.
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