Common Technology Applied in Industry under China's Ninth Five-Year Plan

Under the Ninth Five-Year Plan from1996 to 2000,China will introduce 30 projectsof common technology in industry: 1.Advanced cast design,technologyand equipment This technology includes CAD,thetemperature-isolation rising head and subsidyof cast products,and the improvement ofmelting quality of the furnace 2. Continuous rolling and

MAGNETIC TREATMENT TECHNOLOGY APPLIED TO OILFIELD PRACTICE

Petroleum exploration is a strategic task for our country in its economic development.At present,petroleum production in most of east China’s oilfields is in the waning period after reaching a peak.To raise the oil recovery rate is a key measure for their production increase.Because of this,a major provision was included in the third cooperative protocol signed in 1986 by the

Optimization of the sex pheromone-based method for trapping field populations of Phthorimaea operculella(Zeller)in South China

Despite the identification of the potato tuber moth Phthorimaea operculella(Zeller)sex pheromone,no effective application based on this pheromone has yet been developed and evaluated.This study investigated the effect of pheromone lures,trap densities,heights of trap deployment,and pheromone doses in Yunnan,China,for the purpose of increasing the control efficiency of P.operculella and improving the application of pheromone technology in the field.The results showed that lures made of corn oil and red PVC pipes attracted the highest number of moths(11.73±1.90 per trap per day).Sex pheromone loading of 100μg was optimal for trapping moths,but higher doses of pheromone inhibited attraction.The density of traps did not affect capture rates;therefore,the optimum trap density was 30–40 traps ha^(–1).The optimum height of trap deployment was not above the height of the plant canopy.This study provides technical details necessary for the monitoring and control of potato tuber moth using sex pheromones.

Exploration and Practice of"Double Line and Six Coordination"Teaching Method in the Construction of New Agricultural Science Specialty

Aiming at the main problems existing in the teaching process of new agricultural science,systematic solutions are put forward:(1)creating an agriculture related professional group serving the coordinated development of large-scale operation subjects and small farmers,and fully connecting the coordinated development needs of large-scale operation subjects and small farmers;(2)carrying out all-round agricultural related professional teaching reform,so as to cultivate high-quality talents for the organic connection between small farmers and modern agricultural development;(3)based on agriculture related professional resources,taking multiple measures to improve the social service development ability of secondary vocational schools.

Evaluation of Contact Pressure in Bending under Tension Test by a Pressure Sensitive Film

The contact pressure acting on the sheet/tools interface has been studied because of growing the concern about the wear of tools. Recent studies make use of numerical simulation software to evaluate and correlate this pressure with the friction and wear generated. Since there are many studies that determine the coefficient of friction in sheet metal forming by bending under tension (BUT) test, the contact pressure between the pin and the sheet was measured using a film that has the ability to record the applied pressure. The vertical force applied to pin was also measured. The results indicate that the vertical force is more accurate to set the contact pressure that using equations predetermined. It was also observed that the contact area between the sheet and the pin is always smaller than the area calculated geometrically. The friction coefficient was determined for the BUT test through several equations proposed by various authors in order to check if there is much variation between the results. It was observed that the friction coefficient showed little variation for each equation, and each one can be used. The material used was the commercially pure aluminum, alloy Al1100.

APPLYING NOVEL ANALYTICAL TECHNOLOGIES TO FACE NATURAL PRODUCTS CHALLENGES

Herbal medicines have been used since ancient times for thetreatment of many diseases and illnesses.Modern chromatographic and spectroscopic techniques have had a tremendous impact on the analysis of herbal medicine to facilitate research as well as enhancement of safety and efficacy of commercial products.Today,with the