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Search Results: 1 - 10 of 424882 matches for " G.C.Yang "
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JF Li,GC Yang,YH Zhou,

金属学报(英文版) , 1998,
Abstract: The solidification behavior of bulk undercooled Ni50Cu50 alloy was systematically investigated. Double recalescences were discovered for the first time in a single phase Ni-Cd alloy, in which there is no solid phase transition at elevated temperature. When the alloy melt was undercoolcd below the solidus temperature, the effect of nonequilibrium solidification could make the solid with the norminal composition C0 of the alloy nucleate and grow till tempemture approached To (the temperuture at which the free enengies of solid and liquid with C0 are equal). Following it, the nucleation and growth of the solid with more high melting point component were required, so the secondary recalescence took place. The concentration distribution in crystals was also analysed.
JC Wang,ZM Zhang,YL Lu,GS Song,GC Yang,

金属学报(英文版) , 1998,
Abstract: To improve the damping capacities of metals and alloys, the microstructures and damping capacities of ZA27 alloy modified by Zr were studied, and the damping capacities at room tempemture were measured by using cantilever beam techniques. The experiment results show that Zr can refine the Al-rich primary phase and improve the damping Capacities saliently. Compared with the un-modified one, the damping capacity of ZA27 alloy modified by 0.3wt%Zr received 90 percent increment. The high damping capacities are attributed primarily to grain ablement and the increasing of phase interfaces.
Analysis for Pull-In Voltage of a Multilayered Micro-Bridge Driven by Electrostatic Force  [PDF]
Engineering (ENG) , 2010, DOI: 10.4236/eng.2010.21007
Abstract: A trial solution for bending deflection of a multilayered micro-bridge subject to a voltage induced load is presented. The relation between the applied voltage and the displacements of the micro-bridge in the pull-in state is analyzed by energy method. Furthermore, two analytical expressions about normalized displacement and pull-in voltage are carried out. It’s proved that the value of normalized displacement is not influenced by residual stress if axial and shear deformation is ignored. Finally, the theoretical results are compared with that of FEM, and they show good agreement.
Toespraak by geleentheid van ’n gradeplegtigheid van die PU vir CHO op 27 April 1990
G.C. Velthuysen
Koers : Bulletin for Christian Scholarship , 1990, DOI: 10.4102/koers.v55i1-4.968
Die boek Josua gelees teen ’n na-eksiliese agtergrond
G.C. Lindeque
HTS Theological Studies/Teologiese Studies , 2009, DOI: 10.4102/hts.v58i4.721
Abstract: Reading the book of Joshua against a post-exilic background This article argues that the book of Joshua portrays the idealistic views held by the post-exilic community on the history of Israel. The book displays remarkable similarities with Third Isaiah and with narratives from the post-exilic period. By reading the book of Joshua against a post-exilic background, it obtains theological significance, not as a historical account of the occupation of the land, but as a call for the acceptance of foreigners into the community of the people of YHWH, as well as for the decentralization of religious power. The book owes its final form to a marginalized group, who were in conflict with the religious leaders in Jerusalem. The book of Joshua functioned as a contra-narrative against the exclusive claims made by the returning exiles.
Indian Association Of Dermatologists Venereologists & Leprologists West Bengal State Branch
Saha G.C
Indian Journal of Dermatology , 1996,
Impact of different cropping sequences on the population density of phytoparasitic nematodes in the farmer's field
Indian Phytopathology , 2011,
Abstract: In the farmer's field, four cropping sequences were studied for their impact on the populations of prevalent phytoparasitic nematodes. Different crops involved in the sequences were; mustard, tomato, maize, wheat, onion, gram, ginger and pea. Against root-knot nematode problem (which is very serious in Kharif vegetables), crops like pea, wheat and maize proved beneficial. Fields with spiral nematode (Helicotylenchus species) problem, cultivation of the crops like tomato and gram may be advisable. Against lesion nematode (Pratylenchus species), crops like tomato, onion and pea were found to be of high significance. Cultivation of onion can also be suggested in the fields harbouring high population densities of stunt nematode (Tylenchorhynchus species). Onion was the crop which did check the overall phytoparasitic nematode populations.
The Effect of Financial Liberalization on Selected Macroeconomic Variables: Lesson From Nigeria
G.C. Okpara
The International Journal of Applied Economics and Finance , 2010,
Abstract: This study analyzed the effect of financial liberalization on selected macroeconomic variables namely, Gross Domestic Product (GDP), foreign direct investment, financial deepening, savings and inflation rate in Nigeria. To carry out this analysis, we employed three alternate methods the parametric paired sample statistic for t-test and the non parametric Wilcoxon signed rank test to determine whether significant differences exists between pre/post liberalization macroeconomic variables. The third method, the discriminant analysis was meant to determine the direction as well as the magnitude of the discriminant variables. The result shows that while real GDP recorded (highest) positive and significant contribution, national savings and foreign direct investment made negative and significant contribution. Financial deepening and inflation rate did not discriminate significantly between non financial and financial liberalization. In the light of this, coupled with he theoretical evidence of bank crisis emanating from financial liberalization, the recommendation that government embarking on financial liberalization should set up an agency that will follow up action, was made.
Biological and Chemical Warfare
G.C. Odendaal
Scientia Militaria : South African Journal of Military Studies , 2012, DOI: 10.5787/20-3-358
Abstract: 1. Chemical and biological warfare is very old indeed, at least 2 000 years old. The arsenal consists of poison tipped arrows and darts, as well as toxins found in certain wood fibres that were used to incapacitate fish in streams. Armies laying seige to cities would catapalt corpses and entrails over the walls to induce a plaque and defecate into wells and water supplies. The Romans tilted salt into the soils of Carthage to prevent Carthage from ever becoming a threat to them in the future - either militarily or economically. 2. Since World War II, bacteriological and chemical weapons have become an increasing possibility. But because there is no clear evidence that these agents have ever been used as modern military weapons, discussions of their characteristics and potential threat have to draw heavily upon experimental field and laboratory data, and on studies of naturally occurring outbreaks of epidemics of infectious disease, rather than on direct battlefield experience. The potential importance of biological agents in warfare can be sensed when one remembers that infectious disease even as recently as World War II caused numerous casualties. 3. The greater threat posed by chemical weapons today derives from the discovery and manufacture of new, more toxic compounds. On the other hand, bacteriological agents already exist in nature and can be selected for use in warfare. 4. It would appear that chemical and biological agents have been used on a wide scale today as weapons of war, especially against the inhabitants of Afghanistan. These weapons are mainly being used by the Soviets and it can therefore be concluded that the use of chemical and biological weapons in Southern Africa cannot be ruled out.
Enhancement of Fault Anomalies by Application of Steerable Filters: Application to Aeromagnetic Map of Part of Ifewara Fault Zone, Southwestern Nigeria
G.C. Onyedim
Journal of Applied Sciences , 2007,
Abstract: Subtle potential-field signatures of brittle faults and fractures necessitate detailed data processing, using a wide variety of anomaly-enhancement techniques and display parameters. As a class of oriented linear filters, steerable filters are used in many vision and image processing tasks such as edge detection, textural analysis, motion analysis and pattern recognition. In this study, steerable filters were applied in six different azimuth directions to enhance magnetic anomalies due to faults in part of the basement complex of southwestern Nigeria. Unlike the original unfiltered image, the filtered images facilitated easy delineation of linear features which were interpreted as fractures in the area. The major fracture directions identified were NNE-SSW, NE-SW, NW-SE and ENE-WSW. The NNE-SSW trending Ifewara fault shows clearly as a fault zone.
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