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utilization of
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     STUDY ON QTL FOR ABSORPTION AND UTILIZATION OF NITROGEN, PHOSPHORUS, AND POTASSIUM IN WHEAT (Triticum aestivum L.) SEEDLINGS
     小麦(Triticum aestivum L.)苗期氮、磷、钾吸收和利用的数量性状位点研究
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     Study on the Potential of Rainwater Resourcfulization and the Model of Network Utilization of Small Watershed in the Loess Plateau
     小流域雨水资源化潜力及网络化利用模式研究
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     Study on Grazing and Utilization of Goats on a Shrubland in the Three Gorges Region of Yangtz River
     长江三峡地区灌丛草地山羊放牧利用研究
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     Study on Product Design System Oriented to the Optimized Utilization of Material Resource and Cutting-stock Technology
     面向物料资源优化利用的产品设计系统与优化下料技术研究
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     Study on Utilization of Amino Acids and Protein Turnover in Inner Mongolian White Cashmere Goats
     内蒙古白绒山羊氨基酸利用和蛋白质周转规律的研究
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     Status and prospects of the processing and utilization of walnut
     核桃生产加工利用研究的现状与前景
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     (e) To research the monitoring and management technology in the high efficient utilization of agricultural resources.
     ⑤农业资源高效利用的监测与管理技术等5个领域深入开展中国的农业资源高效利用研究
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     Development and Utilization of CFB Boiler Ash
     云天化CFB锅炉粉煤灰综合开发与利用研究
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     Research Actualities on the Utilization of Educational Technology by American Teachers
     美国教育技术利用研究现状——《教师应当了解的技术知识:观点与实践》评介
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     Study on Introduction Identification and Utilization of Zhonghua No. 4
     花生新品种中花4号引种鉴定及利用研究
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     Study on Synthetical Utilization of Lignin from Alkaline Pulping Black Liquor
     碱法制浆黑液中木素综合利用的研究
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     Utilization of VEGF Gene Modified Tissue Engineering Bone in Promoting the Healing of Rabbit Bone Defect
     VEGF基因修饰组织工程骨促进兔大段骨缺损修复的实验研究
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     Study on Achieving Economic Combined Utilization of Seawater by Solar Chimney Technology
     实现太阳能烟囱经济综合利用海水的系统性研究
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     A PRELIMINARY STUDY ON THE UTILIZATION OF THE FUNGUS, BEAUVERIA BASSIANA (BALS.) VUILL.TO CONTROL THE SOY-BEAN POD BORER——(GRAPHOLITHA GLYCINIVORELLA MATS.)
     应用白僵菌(Beauveria bassiana(Bals.) Vuill.)防治大豆食心虫(Grapholitha glycinivorella Mats.)的初步研究
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     INVESTIGATIONS ON THE BIOLOGY AND UTILIZATION OF DIBRACHYS CAVUS (WALKER)
     黑青小蜂(金小蜂)Dibrachys cavus(Walker)生物学特性及其应用的研究
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  utilization of
In order to improve the utilization of light, the technologies of implantation of transition metal ions (V+ and Cr+) and electron beam irradiation to deposit noble metal particles (Ag and Pt) were used.
      
A novel bandwidth allocation strategy along with a connection admission control technique was proposed to improve the utilization of network resources.
      
It is found that the size and interval of the data frame, utilization of the link background and protocols of higher layer are key factors of real-time performance.
      
The efficiency of light energy utilization of Platycladus orientalis was higher than that of Pinus tabulaeformis; PN, Tr and Ci of Platycladus orientalis and Pinus tabulaeformis were enhanced by increasing soil moisture content, whereas WUE declined.
      
principis-rupprechtii artificial forest was about 2600 trees/hm2, which is also the reasonable planting density if the utilization of double cutting is not considered.
      
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Jujube(Zizyphus vulgaris Lam)is a popular fruit in North China. The fruit is mainly marketed after dehydration. However, there are no less than twenty rarities sold in Peking while fresh during the months of August and October.The ascorbic acid content of 16 varieties of the fresh fruit has been determined. The values found are all above 300 mg per 100 g of edible portion—mostly between 400-600 mg, the highest being above 1,000 mg. It is certainly worth noting that, as a class of ordinary food, Jujube has the...

Jujube(Zizyphus vulgaris Lam)is a popular fruit in North China. The fruit is mainly marketed after dehydration. However, there are no less than twenty rarities sold in Peking while fresh during the months of August and October.The ascorbic acid content of 16 varieties of the fresh fruit has been determined. The values found are all above 300 mg per 100 g of edible portion—mostly between 400-600 mg, the highest being above 1,000 mg. It is certainly worth noting that, as a class of ordinary food, Jujube has the highest ascorbic acid content.As the fruit ripens, i. e. the colour turns from green to red and the texture changes from hard to soft, its ascorbic acid content decreases. When the sample was stored at 0-4℃ for about one and a half months, the fruits which remained hard lost about 10% of its ascorbic acid; when the fruit had become somewhat soft, the amount of ascorbic acid decreased drastically and the dehydro-form increased correspondingly while the total amount remained practically unchanged.Experiment with human subjects indicated that the utilization of the ascorbie acid of Jujube is 86.3-93.0% of the pure vitamin.

鲜棗的抗坏血酸含量极高,为一般水果与蔬菜之冠。品种之间的差异很大。在本试验里所分析的16种鲜棗,一般含量都在每百克300毫克以上,多数在400—600毫克之间,最高者则超过1,000毫克。含量随成熟程度而降低;当棗由硬变软时,还原抗坏血酸之量大减,脱氢抗坏血酸之量相应地增高,而总抗坏血酸之量则无大改变。在冷藏 坏血酸的利用率为纯抗坏血酸的72.6—100.5%,平均为86.3%,这样的差异是不大的。

Sugar cane borers infest the cane and cause a considerable injury to the plant in China. Four species of sugar-cane borers are commonly found in Kwangtung Province, viz. Diatraea venosata Wk., Chilo infuscatellus Snellen, Eucosma schistaceana Snellen and Sesamia inferens Wk.Trichogramma evanescens Westw. occurs in nature as an egg parasite of the sugar-cane borers.The present experiment on breeding Trichogramma centres around the ways of increasing its viability.The quality and the quantity of the nutrient for...

Sugar cane borers infest the cane and cause a considerable injury to the plant in China. Four species of sugar-cane borers are commonly found in Kwangtung Province, viz. Diatraea venosata Wk., Chilo infuscatellus Snellen, Eucosma schistaceana Snellen and Sesamia inferens Wk.Trichogramma evanescens Westw. occurs in nature as an egg parasite of the sugar-cane borers.The present experiment on breeding Trichogramma centres around the ways of increasing its viability.The quality and the quantity of the nutrient for the larvae and adults of Trichogramma play an important role in relation to their viability. The contents of the egg of Sitotroga cerealella Oliv. which has been commonly used as a host of the Trichogramma are of poor nutrient quality and quantity for the larvae of this parasite. The eggs of Angoumois grain moth are so small that only one adult Trichogramma emerges from each egg. Such adults are usually smaller in size, less active and with lower reproductive potentiality as compared with those that emerge from the field hosts; besides, the female sex ratio gradually decreases in the successive generations.From the results of an experiment on Trichogramma breeding, it is found that the eggs of Attacus cynthia ricini Boisd. and of Dendrolimus sp. are the most suitable hosts for the propagation of Trichogramma evanescens. The adults of the parasites emerging from such eggs are generally large in size, very active and possess high reproductive potentiality; besides, the female sex ratio remains unchanged in the successive generations. Evidently, the quality and the quantity of the egg contents of these two species of insects fulfil the nutritional requirements for the development of the Trichogramma larvae and they are recommended as hosts for Trichogramma propagationThe average number of adult Trichogramma emerging from a single egg of Dendrolimus sp. and that of Attacus cynthia ricini is 27.3 and 28 respectively with the respective maximum reaching 52 and 59 in the present record. If too many adults emerge from a single egg, both their size and reproductive potentiality would decrease and, moreover, the number of the male individuals would increase and the adult life would shorten. Undoubtedly, all these features are unfavourable for the utilization of the parasites for control of the insect pest as far as the effectiveness of the parasites is concerned. From the standpoint of increasing viability of the parasite, regulation of the number of parasites in the egg during the procedure of propagation of Trichogramma is necessary. Regulation of the number of parasites in the egg means regulation of the quantity of the nutrient for the parasites. The method of checking the occurrence of superparasitism is to regulate the ratio of the number of female Trichogramma and host eggs to 1:1 through the procedure of propagation; the period of oviposition should not exceed one day.The quality of nutrient for adult Trichogramma greatly affects its longivity and reproductive potentiality. The result of a nutritional experiment shows that honey is the most suitable nutrient for it. The adults fed with honey have the longivity increased 8.6 times and the number of the offspring 14.7 times as compared with those fed with distilled water.Cold storage effectively reduces the speed of development of the immature stage of Trichogramma. The mature larvae about to pupate within the host eggs maintain their life for 57 days under 4—7℃ and all of them will come out as adults at room tempeature. The fresh eggs of Dendrolimus sp. and of Attacus cynthia ricini kept in cold storage of 0— 4℃ for 97 days and 61 days respectively are still usable for rearing Trichogramma.In order to increase the adaptability of Trichogramma to the environment of the sugarcane field, the rearing procedure is suggested to proceed in the field or in an indoor environment with fluctuating temperature and humidity. The continuous artificial rearing should not exceed five generations before the liberation of the parasites.The distance of dispersion of Trichogramma eva

甘蔗是我国最重要的糖料作物,甘蔗害虫以甘蔗螟虫最普遍,分怖亦最廣。廣东珠江三角洲常见的甘蔗螟虫共有四种:条螟或称斑点螟(Diatraea venosata Wk.)、二点螟(Chilo infuscatellus Snellen)、黄螟(Eucosma schistaceana Snellen)和大螟(Sesamiainferens Wk.)。甘蔗螟虫为害的结果,形成枯心苗和蛀(?),影响甘蔗生长发育,减低蔗糖成份,易受风折,而且造成甘蔗赤腐病菌入侵条件。 甘蔗螟虫的为害虽重,但目前还没有一套完整的防治方法,也还没有一种很有效的方法。本试验目的,是利用赤眼蜂来防治甘蔗螟虫。试验内容是赤眼蜂的寄主的选择和繁殖、赤眼蜂的繁殖及保存、赤眼蜂田间放播初步试验和甘蔗螟虫田间发生情况的调查。现将各项试验结果简要地分述如下: 赤眼蜂能否利用成功,要看培育出来的赤眼蜂是否具有高度的生活力。赤眼蜂的生活力可用下列四个标准去量度:(1)蜂体大小,(2)繁殖能力,(3)成虫寿命,(4)对田间环境的適应性。此外,繁殖出来的赤眼蜂雌性此率不应此自然界的减低。 赤眼蜂的生活力,首先和寄主有很大关系。如果寄主卵的内含物的质和量都適合 於赤...

甘蔗是我国最重要的糖料作物,甘蔗害虫以甘蔗螟虫最普遍,分怖亦最廣。廣东珠江三角洲常见的甘蔗螟虫共有四种:条螟或称斑点螟(Diatraea venosata Wk.)、二点螟(Chilo infuscatellus Snellen)、黄螟(Eucosma schistaceana Snellen)和大螟(Sesamiainferens Wk.)。甘蔗螟虫为害的结果,形成枯心苗和蛀(?),影响甘蔗生长发育,减低蔗糖成份,易受风折,而且造成甘蔗赤腐病菌入侵条件。 甘蔗螟虫的为害虽重,但目前还没有一套完整的防治方法,也还没有一种很有效的方法。本试验目的,是利用赤眼蜂来防治甘蔗螟虫。试验内容是赤眼蜂的寄主的选择和繁殖、赤眼蜂的繁殖及保存、赤眼蜂田间放播初步试验和甘蔗螟虫田间发生情况的调查。现将各项试验结果简要地分述如下: 赤眼蜂能否利用成功,要看培育出来的赤眼蜂是否具有高度的生活力。赤眼蜂的生活力可用下列四个标准去量度:(1)蜂体大小,(2)繁殖能力,(3)成虫寿命,(4)对田间环境的適应性。此外,繁殖出来的赤眼蜂雌性此率不应此自然界的减低。 赤眼蜂的生活力,首先和寄主有很大关系。如果寄主卵的内含物的质和量都適合 於赤眼蜂幼虫营养之需,羽化出来的成虫体积大,繁殖力强,寿命也有延长的趣势。关於赤眼蜂的寄主,我们管用过17种鳞翅目昆虫的卵供其寄生,结果以松毛虫(Dendro

This article, a result of research work caried On in connection with Teaching, aims at presenting an analysis of the basic circuit of the resistance strain gage withaut amplifier, including therin (1) a computation of the relation between the resistance of each branch of the bridge and the sensitivity of galvanometer on the one hand and the sensitivity of the gage on the other and (2) a brief discussion of the limitations in regard to both the construction and the utilization of the strain gage without...

This article, a result of research work caried On in connection with Teaching, aims at presenting an analysis of the basic circuit of the resistance strain gage withaut amplifier, including therin (1) a computation of the relation between the resistance of each branch of the bridge and the sensitivity of galvanometer on the one hand and the sensitivity of the gage on the other and (2) a brief discussion of the limitations in regard to both the construction and the utilization of the strain gage without amplifier Itconcludes with a constructive critieism of Comrade Yu-chuan Chia's article appeared in the second issue of the periodical with the title "The Resistance Strain Gage for Static Deformation—Its Design and Its Construction."

本文是結合敎學工作進行研究的一個結果,提供了對不帶放大器的電阻應變儀基本電路的分析,包括(1)電橋各臂的電阻和檢流計的靈敏度與應變儀靈敏度的關係的計算;和(2)對不帶放大器的應變儀在製造和使用方面的限制的簡短討論。並提出對本刊第二期贾有權同志:“测靜荷的電阻式應變儀的設計和製造”一文的一些改進意見。

 
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