抑制因素

The formation mechanism of the absolute instability and gyrotron backward wave oscillations is analyzed, and the methods to suppress the parasitical modes are discussed.The nonlinear theory model of gyro-TWT is consummated by considering the influence of tapered magnetic field and waveguide radius, electron velocity spread, and waveguide loss on electron beam-wave interaction. The large-signal characteristic of gyro-TWT, such as launching loss and absolute instability, are also analyzed in detail. This work establishes the foundation for the development of a gyro-TWT amplifier.

重点研究了两段损耗波导结构和损耗陶瓷结构回旋行波管中的电子注-波互作用，分析了绝对不稳定性和回旋返波振荡的形成机制和抑制寄生模式的方法；完善了回旋行波管的非线性理论模型，并考虑了磁场和波导半径渐变、速度零散、波导损耗等因素对注-波互作用的影响；详细分析了发射损耗、相位稳定性等回旋行波管的大信号特征，为回旋行波管放大器的研制奠定了基础。

Literature Research The etiological factors of POF are not still clear. The changes of sites and numbers in X chromatosome, X; autosome translocations, a forkhead transcription factor gene (FOXL2) mutations, FRAXA premutations and inhibits gene mutations are found in POF patients, so genetic disorders have been thought to be involved. Irradiation, chemotherapy or pelvic operations can damage ovaries and cause ovarian atrophy and failure, so it is thought one factor of POF.

一、文献研究 POF的确切病因目前尚不清楚，从POF患者体内检测到X染色体上位点和数目的变化，X染色体与常染色体间的平衡易位，脆性X基因前突变，FOXL2基因突变，抑制素基因突变等，故认为POF发生与遗传因素有关；由于放射、化疗或盆腔手术等可损伤卵巢，导致卵巢萎缩，出现卵巢衰竭，故也是导致POF的因素之一。

With the lower episodes of acute rejection, chronic graft dysfunction has been regarded as the obstacles disturbing graft long-term function, and the feature of CGD is the progressing fibrosis of parenchyma cell and dysfunction, but the mechanism is unclear.

过去几十年强力免疫抑制剂问世，在大大提高移植成功率的同时，其本身的毒副作用也影响着移植物长期有功能存活，被认为是导致CGD的应激因素和危险因素之一。

Little is known about the influence of minerals and other soil factors on the biocontrol activity of Trichoderma spp.The objectives of this study were to first evaluate the take-all–suppressive activity of T.koningii in field soils representative of the wheat-growing region in the Pacific Northwest of the United States,and then to identify abiotic edaphic parameters that are positively and negatively associated with the biocontrol activity of T.koningii in these soils.Such information will be usefulin selecting sites where T.koningii can be expected to perform optimally;in developing formulations that enhance biocontrol;and perhaps in indicating factors that favor mechanisms involved in the biocontrol activity of this strain such as antibiotic and enzyme biosynthesis.

知之甚少，对矿物和其它土壤因素对生物活性木霉镰刀本研究的目的首先评估全蚀抑制活性t.koningii土壤代表小麦种植区在西北太平洋的美国，然后找出生物土壤参数有积极和消极与生物防治活性t.koningii在soils.such这些信息将有助于在选择地点，可以t.koningii预计进入最佳状态；在发展制剂提高生物防治；或许说明因素，有利于参与机制，在生物防治活动，这株如抗生素和酶的合成。

In region conservational development, the aim for landscape ecology evaluation is to make good use the human factors which can induce and improve the landscape ecology, to curb and to prevent the human factors affection which can lead to the reduction of the landscape ecosystem, to establish the nature-human compound landscape ecosystem with reasonable structure and highly effective function.The fenshuiling-dajiangou-jiuqu region, an important ecological protection area of Shandong Province, lies in the southward hilly region in Jinan.

在区域保护性开发建设中引入景观生态评价，旨在区域开发建设过程中充分发挥可诱导和促进景观生态系统进化的人为因素，抑制和防止可导致景观生态系统退化的人为因素的影响，建设结构合理、功能高效且适合人类生存的自然-人工复合景观生态系统。

The main findings of the empirical analysis include: 1 The decisions concern the choices of auto ownership, mode to work, and auto use were made simultaneously and interrelatedly. 2 The decline in correlation between the choices of auto ownership and use as the number of vehicle increase indicated that to own multi-vehicles in not necessary due to the demand for auto use. 3 Both price elasticity and income elasticity for auto ownership are low. This evidence implies that auto has become a kind of necessity for household. Therefore, the effect of decreasing the tendency of auto growth by means of increasing the cost of owning auto would not be significant. The price elasticities of auto use are between -0.48 and -0.78. 4 There are same underlying factors influencing auto ownership, mode to work, and auto use including: parking time at residential location, accessibilities to work location by auto and transit, auto use unit cost, and the percentage of auto use for work. These factors indicate a direction for the formatting of future automobile policies.

本研究以台湾地区之家户个体资料从事实证分析，实证分析之主要结论如下：1小汽车持有数量、工作者工作运具选择、与小汽车使用量等选择间确有相关与联立性存在；2小汽车持有数量选择与小汽车使用量选择间之相关性会随小汽车持有数量的增加而降低，显示选择持有多部小汽车并非完全基於小汽车使用之需要；3小汽车持有之价格弹性与所得弹性均偏低，显示小汽车已成为民生必需品，欲以提高小汽车持有成本之价格手段来抑制小汽车持有，并无法竟其功，小汽车使用需求之价格弹性则在-0.48与-0.78间；4影响小汽车持有数量、工作者工作运具、与小汽车使用量等选择主要之相关或共同因素包括：家户附近停车状况、私人运具与大众运输工具之工作可及性、小汽车单位使用成本、与小汽车工作使用比率等，以上这些影响因素可为日后小汽车相关政策的研拟提供一方向。

Results Complications of deep white candidiasis infection inside the hospital mostly took place among patients suffering from chronic respiratory diseases, malignant tumors and nosohemia,accounting for 59.09%.Infection was in direct proportion with the length of hospitalization.The chief factor leading to infection was the long-term use in large doses of wide-spectrum antibiotics,especially the use of the third-period cephalosporins,which are wide in spectrum and strong in killing bacteria.White candidiasis infection results from the composite action of multiple dangerous factors. Ofthose infected,40.91%used hormone and 11.36% used immunosuppressive agents as well as radiotherapy and chemotherapy. The application of trauma examination and curing also created conditions for the occurrence of infection.

结果 发生医院内部白色念珠菌感染多系慢性呼吸系统疾病、恶性肿瘤和血液病患者，占59.09%；感染与住院时间成正比；广谱抗生素大剂量、长时间应用，特别是选择广谱、杀菌力强的第三代头狍菌素类是致感染的主要因素；白色念珠菌感染是多种危险因素综合作用的结果，感染者使用激素的占40.91%，使用免疫抑制剂及放疗化疗的占11.36%，实施插入性操作及各种介入性治疗为感染创造了条件。

Based on these results, it was concluded that in conditions where eye movements are needed, besides saccadic suppression, the higher central system must calculate and control the eye movements, which affects its capacity to process the text information.

通过固定窗口显示方式和知动窗口显示方式条件下中文阅读的比较，排除了强迫阅读的因素，说明有无眼动是产生阅读速度差异的主要原因；根据以上实验结果，可得出结论，在有眼动的情况下，除了saccade抑制影响阅读和识别外，主要的因素在于高级中枢对位置信号的处理，眼动的驱动控制及运动过程影响了高级中枢对阅读内容和识别内容的解码速率。

Such affective factors as anxiety,inhibition,motivation,self-esteem,etc.are illustrated and circumstantiated.

情感因素包括自尊、焦虑、抑制、动机等几大因素。

The past researches on the central reorienting were limited to the field of vision channel and cross-channel of vision and auditory, while in the field of auditory channel study, there are no relative published results.

首先，对其相关研究成果进行综述：(1)听觉IOR的理论模型：双过程模型和反应抑制理论；(2)听觉IOR的主要影响因素：空间关联、中央重新定向、刺激-反应计划方式和任务难度；其次，结合当前空间关联和中央重新定向两个影响因素的研究现状和存在问题，分别进行了两组实证研究。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。