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prevent the loss
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  “prevent the loss”译为未确定词的双语例句
     Results Pretreatment with Rg1(5 0,10 0?mg/kg) could prevent the loss of Nissl staining neurons and TH\|positive neurons,and decrease TUNEL\|staining ratio. Rg1 could enhance the expression level of Bc1\|2 and Bc1\|x1,and reduce the expression level of Bax.
     结果  5 0和 10 0mg kgRg1预处理PD模型鼠能使黑质致密带 (SNc)部位的Niss1和TH染色阳性神经元增多 ,TUNEL染色阳性率降低 ,以及Bc1 2和Bc1 x1表达增加 ,Bax表达减少。
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     Abstract As-sintered T1-2223 and T1-2212 phases which were post-annealed in T12O3 vapour, the superconducting transition temperatures have obvious changes. The changes in Tc were due to a decrease in T1 content during postannealing processes. The T12O-3 vapour can effectively prevent the loss of T1 in T1-based superconductors.
     T1-2223和T1-2212相超导样品经T12Oa蒸气处理超导转变温度发生明显的变化,Tc的变化来源于样品中T1含量的变化,T12O3蒸气能有效地阻止T1基超导体中T1的损失.随着T12O3蒸气压的增加T1损失明显减少.这是一种控制T1浓度的有效方法.
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     Countermeasures Study to Prevent the Loss of Talents for the State-owned Metallurgical Enterprise after Entry into the WTO
     加入WTO后国有冶金企业防止人才流失对策研究
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     So it is necessary to build an ATP (Acquisition, Pointing and Tracking) subsystem to prevent the loss of communication signal from the failure of links.
     因此,在大气激光通信中,必须建立一套捕获、瞄准和跟踪(Acquisition、Pointing and Tracking,简称ATP)系统来防止由于链路失败而造成的信号损失。
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     2.Aprotinin could downgrade the expression of ICAM-1 of TNFα activating endothelial cells and prevent the loss of β-catenin of the cells,protect the adherens junctions of endothelials cells.
     2. 抑肽酶可抑制TNFα活化的人脐静脉内皮细胞ICAM-1的表达,可避免β-catenin的丢失。
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     How to prevent it?
     如何有效地遏制腐败现象 ?
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     prevent shock;
     防止休克发生;
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     Prevent the particle from polluting;
     防止微粒污染;
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     Prevent the Transmission of HIV in the Environment
     预防医疗环境中HIV病毒的传播
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     Loss and GainHenry
     得与失
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  prevent the loss
To prevent the loss of important genetic information cultivars are conserved in several collections of gene banks.
      
Simultaneous treatment with 100 μM acrolein and 20 μM α-tocopherol did not prevent the loss of cellular GSH, though it prevented the LPO accumulation and the LDH leakage.
      
Insulin, dexamethasone, thyroid hormone plus GH or prolactin, or the combination of all five hormones also failed to prevent the loss of estrogen receptors.
      
Since strain 110 is used in inoculum production, the use of RAPD to monitor inoculum cultures could help to preserve their genetic composition and prevent the loss of important symbiotic properties.
      
denticulatum indicates a possible mechanism to prevent the loss of these elements as observed in the transplanted P.
      
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Some growth habits of a wild oat(Auenae sp.)in Chinghai provincewere studied and described.The damage caused by this weed was surveyedand evaluated and,therefore,a practicle control program had been workedout.Measures such as the deep burying of the herbicides(including Barbane,Avadax,Triallate,Suffix ect.)into the soil for preventing the loss from(?)heir volatility and the promotion of the growth of crop plants by frequentwatering etc.were considered to be essential for increasing the effectivenessof...

Some growth habits of a wild oat(Auenae sp.)in Chinghai provincewere studied and described.The damage caused by this weed was surveyedand evaluated and,therefore,a practicle control program had been workedout.Measures such as the deep burying of the herbicides(including Barbane,Avadax,Triallate,Suffix ect.)into the soil for preventing the loss from(?)heir volatility and the promotion of the growth of crop plants by frequentwatering etc.were considered to be essential for increasing the effectivenessof the herbicides and decreasing the costs of controlling the weed under thedrier and windy conditions in Chinghai province.

本文对青海高原农田野燕麦的发生特点,如出苗、生长发育、繁殖和传播、种籽抗逆性等进行了初步试验。为认识野燕麦的危害性和制定防除措施提供了依据。在化学除草方面,试验了十几种除草剂和不同的应用条件,初步认为“深埋药”、“狠抓水”、“防耗损”、“促生长”是保证药效的重要环节。对旱地除草剂的应用有一定参考意义。

In order to study laws of soil and water loss of tropical rainforest andthe exploitation and utilization of its land.We have carried out the field-plotexperiment of water loss and soil erosion in southern Yunnan for six yearsfrom 1962 to 1967. The results of the study are summarized as follows: 1. The seasonal variation of soil and water loss in southern Yunnan isvery obvious,it may be divided into three different periods on the basis of soiland water loss during six years. (1) The period of slight soil and...

In order to study laws of soil and water loss of tropical rainforest andthe exploitation and utilization of its land.We have carried out the field-plotexperiment of water loss and soil erosion in southern Yunnan for six yearsfrom 1962 to 1967. The results of the study are summarized as follows: 1. The seasonal variation of soil and water loss in southern Yunnan isvery obvious,it may be divided into three different periods on the basis of soiland water loss during six years. (1) The period of slight soil and "water loss in hot and dry season(Feb.to May). (2) The period of severe soil and water loss in rainy season(Jun.toAug.). (3) The period of slight soil and water loss in cold and cool season(Sep.to Jan.of next year). 2. The general law is that the runoff,the soil erosion and the runoffcoefficient increase with every increase of rain capacity and rainfall intensity in this region. 3. In different exploitation,the soil and water loss of the rubber-teacommunity is 22.3% and 29.7% 1ower than that of a pure rubber plantation,and 95.7% and 93.9% lower than that of farm crop.Therefore,to transformfarm land into rubber-tea community or economic forest land of two storiesis a better way to utilize tropical mountainous area rationally and to decreaseloss of soil and water. 4. The results of the study still shows that the loss of soil and water onthe farm land of shifting cultivation is the most serious.It is 778.3 times and34.5 times that of tropical rainforest,and 6.6 times and 5.7 times that ofbench terrace respectively.In order to restore the function of tropicalrainforest ecosystem and to prevent the loss of soil and water on farm land inthis region,wé must safeguard tropical rainforest against deforestation.Wemust change of the slope land to contour terrace,and reform step by stepthe cropping system of shifting cultivation into that of rational rotation ofcrops,these are efficient measures to raise soil fertility,keep water and soil,fix farm land and obtain high yield of crops.

本文根据6年的径流试验结果,讨论了滇南热带雨林及其不同垦殖利用土地水土流失的一般规律;探讨了本区不同降雨特性与水土流失的相互关系;分析了不同耕作方式、不同群落结构、不同覆盖植物和不同利用方式对水土流失的影响,并提出了本区如何合理利用热带山区土地资源,发展农、林生产和保持水土等措施。

A method for the determination of germanium by graphite furnace atomic absorption spectrometry using a zirconium-coated tube was proposed.It was shown by experiment that in the presence of Zr,Fe,Ni_1,Mo or V a significant increase in sensitivity was observed for germanium.With the graphite tube coated with more than 200μg of zirconium,stable absorption signals of germanium were obtained and the enhancement in sensitivity was 4~6 fold.The appearance temperature of atomization for germanium was also markedly reduced...

A method for the determination of germanium by graphite furnace atomic absorption spectrometry using a zirconium-coated tube was proposed.It was shown by experiment that in the presence of Zr,Fe,Ni_1,Mo or V a significant increase in sensitivity was observed for germanium.With the graphite tube coated with more than 200μg of zirconium,stable absorption signals of germanium were obtained and the enhancement in sensitivity was 4~6 fold.The appearance temperature of atomization for germanium was also markedly reduced from 2050K to 1540K.The formation of GeO_(g)during atomization process was experimentally confirmed by using Pt 265.94 nm line to measure the molecular absorption of GeO 265.94 nm line.The results obtained showed that the use of zirconium-coated tubes prevented the loss of germanium as GeO_(g)during atomization.X-ray diffraction studies of the powder scrubbed from the inner surface of zirconium-coated tubes revealed the formation of zirconium carbide on the inner surface of tubes.The increase in sensitivity of the determination of germanium with zirconium-coated tube may be due to the reduction of GeO_2 or GeO by zirconium carbide.The atomization mechanism of germanium was the vaporization of germanium following reduction. The interference of other ions on the determination of germanium was studied,showing that SO_4~(2-) and PO_4~(3-) suppressed the absorption signals.A benzene extraction procedure was used to separate trace germanium.The enhancing factor for the determination of germanium in benzene was about 20 fold using both a zirconiumcoated tube and an aqueous ammonia(1M)as a matrix modifier.The method for the determination of germanium in coal ash at levels down to 5×10~(-5)% by the benzene extraction-graphite furnace atomic absorption was estabilished.The relative standard deviation for the determination of 7 ppm of germanium was 5.5%.

本文研究了石墨炉原子吸收法测定锗的条件。试验了某些金属盐对测定锗的基体改进效应以及应用涂锆石墨管的效果。实验证明,应用涂锆石墨管可使测定锗的灵敏度提高约4.5~5倍,原子化出现温度从应用普通管时的2050K降低到1540K,消除了记忆效应。此时,锗的原子化机理可能是氧化锗被碳化锆还原,然后金属锗蒸发。提出了氯化锗用苯萃取后苯层进样的锗的分析方法。本研究可应用于煤灰中高于0.5ppm锗的测定。

 
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