向性
- 与 向性 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
The shorter of interruption duration, the more obvious interruption effects, and this support the motion opponency theroy. 3 The different intervals between priming and target were detected. Due to interruption of blank frame, the shorter interruption elicited positive proming effects, which is consistant with integration of temporal and spatial in the human brain. 4 The negative of the same direction is relationship to visual adaption and visual inertia effects.
本系列实验得到以下主要结果与结论:1插入空白图片,将导致特定运动方向的反转,而对二义的运动没有明显影响,反映了空白图片对正常视觉运动的阻断;2阻断时间越短,导致特定运动方向反转的几率越大,即阻断效应越明显,支持运动知觉对立理论;3考察不同间隔的启动——靶刺激,由于空白刺激的插入,启动——靶刺激间隔较短时引起的正性启动效应,与人脑系统对视觉信号的时间与空间整合和视觉惯性是一致的。4同向运动的负性倾斜效应与视觉适应有关。
-
The reseach on activity changes of SOD, POD and CAT during the somatic embryogenesis of Y35 showed:(1) The activty of SOD was from 52.98 to 133.20 U·g-1·h-1, and remained a rising trend after early single embryo forming, this revealed that SOD might be positively correlated to the differentiation of embryogenic cell and the development of somatic embryo.(2) The activty of POD was from 0.05 to 0.50 U·mg-1·min-1, ascended firstly and desceded later, and was highest in embryogenic callus and lowest in late single embryo , this revealed that POD might be positively correlated to the division and differentiation of proembryo mass, while negatively correlated to the development of PEMⅢto late single embryo.(3) The activty of CAT was from 0.86 to 2.81 U·mg-1·min-1, showed an up-down-up trend, reaching to the highest peak at the time of early embryo formating and decreasing to the lowest at the time of early cotyledonary embryo formating, this revealed that CAT might be positively correlated to the development of early single embryo, while negatively correlated to the formation of middle single embryo and early cotyledonary embryo.The changes in activty of SOD, POD and CAT indicated these three antioxidant enzymes coregulated the differentiation and development of embryogenic cells during Larix somatic embryogenesis.4. Differentially expressed cDNA libraries of the stages of proembryo mass and somatic embryo maturation were successfully constructed by suppression subtractive hybridization.
对Y35体细胞胚胎发生过程中抗氧化酶活性变化的研究显示:(1)SOD活性在52.98~133.20 U·g-1·h-1之间,并在早期单胚形成后一直保持上升的趋势,表明其与胚性细胞的分化及体细胞胚的发育均具呈正相关;(2)POD活性在0.05~0.50 U·mg-1·min-1之间,呈现出先下降后升高的趋势,在胚性愈伤组织中最高,而在后期单胚形成时降至最低,表明其与原胚团的分裂和分化呈正相关,但与PEMⅢ向后期单胚的发育呈负相关;(3)CAT活性在0.86~2.81 U·mg-1·min-1之间,表现出升-降-升的变化趋势,在早期单胚形成时升至最高,在早期子叶胚形成时降至最低,表明其与早期单胚的发育呈正相关,而与中期单胚和早期子叶胚的发育呈负相关。
-
It chooses injector\'s capacity of tolerance and the size of injector by the touch keyboard. It displays real time infliction axis direction, distortion distance, keep time, interior hydraulic pressure, separatory power and other performance, which can be print the result of measuring by machine.
并由触摸键进行选择注射器的公称容量,并在测试过程中显示装配施加的轴向力、扭矩,保持时间、内部水压、分离力,可测试注射器和注射针的漏液、漏气、分离力、旋开扭矩、易装配性、抗滑丝性、应力开裂等各项性能,可由机载打印机打印出测试结果。
-
He suffers spinocerebellar ataxia, or "SCA", a degenerative genetic disease that attacks a person's muscles and their ability to control them.
杨文港跪坐在地上,用双手挖地施肥播种,他罹患脊髓小脑萎缩症,一种渐进性退化性遗传疾病,影响人体肌肉的功能,但杨文港不向命运低头,开创出整片农园。
-
The application status of Real time and Embedded softwa re is introduced in this paper firstly ,and based on analyzing character of Real time and Embedded softwar e including real time nature ,embed nature and reactive nature, the paper summar izes the current domestic and foreign research thing of this field ,including va rious kinds of test method, test tool, test strategy and problems.
这些特性主要表现为实时性、反应性和嵌入特性。这些特点向实时嵌入式软件的测试提出了许多新的挑战。本文首先详细分析了实时嵌入式软件的应用特点,分析了这些特点对测试带来的困难,并详尽地介绍实时嵌入式软件的测试技术,包括测试方法、测试策略和测试现状。
-
Synthesis and Characterization of Thermotropic Liquid Crystalline Polyurethane;2. The thermotropic properties,the melting pointT_(m and the .
结果表明,所得聚氨酯产物在144~260℃均为热致性向列型液晶,其熔点和清亮点随着分子链柔顺性的增加而下降。
-
The course that people are getting deeper and more complete cognition on women's school education reflects the transformation from the external and utilitarianism instrumental orien'tation of women concept to the internal value orientation which is publicizing women's subjectivity. It marked that people were developing from a closed, undirectional thinking model and a view of Chinese and western tradition against modern duality to an opening diversification and rationality.
人们对女子学校教育的认识不断加深、完整的过程,凸显出妇女观念从外在的、强调功利的工具性取向转变为内在的、张扬女性主体性的价值性取向,标志着人们正从一个封闭的单向思维模式及中与西、传统与现代二元对立的视域向开放的、多元化、理性化的方向发展。
-
However, as a result of its rather lower porosity, unhomogeneous medium and anisotropy, the exploration procedure faces more amd more difficulties, especially the high request and some new challenges are required for current log method and its interpretation technique, and prompts the ordinary log interpretation to develop toward modern fine interpretation.
然而由于裂缝性碳酸盐岩储层所特有的低孔、非均质性和各向异性,大大增加了油气勘探开发的难度,尤其对目前的测井方法及其解释评价技术提出了更高的要求和新的挑战,促使测井解释由原来的粗放型向现代精细评价方向发展。
-
The changing tendency of books formation from the traditional unilaterality of information transfer to multidirectivity of design form is inquired into.
从我国不同时期书籍形态构成的演变中,探索由传统书籍形态信息传递的单向性向书籍形态设计构成多向性的变化趋势。
-
The results showed that the addition leading to -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 7 could proceed with good diastereoselectivity and excellent yield (95%).(3) The selective N-deprotection of -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 2 without affecting the vinyl group in the substrate were untaken.(4) The Zip reaction for the transformation of -1-(3-aminopropyl)-3-methylazecan-2-one 8 to -7-Methyl-1, Sdiaza-cyclotetradecan-6-one 9 were undertaken. The results showed that, under controlled conditions, acceptable yields (43%) could be achieved and racemization can be minimized during the ring expansion reaction.
该合成路线与文献方法相比,反应条件较温和,也缩短了反应时间;(2)哌啶衍生物2与乙烯基格氏试剂进行加成反应的条件和立体选择性,取得了较好的结果(差向异构体比为80:20,产率95%左右);(3)不饱和哌啶衍生物7在不影响碳碳双键的情况下去除苯基甘氨醇手性辅助基的条件;(4)具有羰基α位手性的氨基酰胺8在不同条件下经Zip重排反应转变为9的反应,控制反应条件,可使反应中消旋化减小到最小的程度。
- 推荐网络例句
-
We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.
索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称;三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起,称之为挽歌体诗人或者史诗诗人,他们被称为诗人,似乎只是因为遵守格律写作,而非他们作品的模仿本质。
-
The relationship between communicative competence and grammar teaching should be that of the ends and the means.
交际能力和语法的关系应该是目标与途径的关系。
-
This is not paper type of business,it's people business,with such huge money involved.
这不是纸上谈兵式的交易,这是人与人的业务,而且涉及金额巨大。