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screen
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    The screen of monitoring plants for fluoride and study on monitoring index
    氟监测植物的筛选及监测指标的研究
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    Objective To screen a strain with high production of pullulan,high utilization of sugars and low secretion of pigment from As3.3984,As3.837,As3.933.Methods The viscosity of fermentation broths of As3.3984、As3.837、As3.933 under the same conditions was determined.
    目的从3株产普鲁兰糖出芽短梗霉As3.3984,As3.837,As3.933中筛选1株产量及糖转化率高、分泌色素低的菌株作为出发菌株。
短句来源
    Methods Modified Hodge Test and EDTA-disk synergy test were used to screen carbapenemases, and isoelectric focusing technique was applied to estimate β-lactamases production. The encoding genes of ESBLs, oxacillinase and metallo-β-lactamases, including blaTEM, blaSHV, blaCTX-M-Ga-Gc, blaPER-1, blaOXA-23, and blaMBL, were amplified and analyzed by PCR and DNA sequencing.
    方法采用改良Hodge试验和乙二胺四乙酸(EDTA)协同试验筛选耐亚胺培南不动杆菌碳青霉烯酶,等电聚焦电泳(IEF)测定产β内酰胺酶等电点,blaTEM,blaSHV,blaCTX-M-Ga-Gc,blaPER-1,blaOXA-23,blaMBL等,引物的PCR进行β内酰胺酶的基因分型,并对PCR产物进行测序;
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    Objectives: To screen small peptides that could antagonize the PGE2 receptor in rheumatoid arthritis (RA) by phage display technology, so that a new way could be found for the treatment of RA.
    目的:通过噬菌体技术筛选PGE2受体拮抗剂,探讨其在类风湿性关节炎(rheumatoid arthritis,RA)中的作用,为RA的治疗开辟新的途径。
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    Methods: Using PCR method to screen the most effective small interference RNA of β3GalT7,synthesised fluorescently-labeled RNA oligos to detect its effectiveness and constructed the RNAi-vector of β3GalT7. Results: The knockdown model of β3GalT7 gene was successfully constructed.
    方法:通过PCR方法筛选针对β3GalT7基因的有效小干扰siRNA,并合成带有荧光标记的RNA oligo进一步验证其有效性,进而构建该基因的RNA干扰表达载体建立其下调表达模型。 结果:成功筛选到β3GalT7基因的有效小干扰siRNA,并进一步成功构建β3GalT7的RNA干扰真核表达载体。
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  “screen”译为未确定词的双语例句
    PCR-SSCP is a simple and sensitive method to screen mutations.
    聚合酶链式反应-单链构象多态性(PCR-SSCP)技术是一种简便、灵敏的突变检测方法。
短句来源
    Methods DNA was extracted with phenol-chloroform from 133 EDTA-blood specimens of healthy unrelated individuals in Henan population,and multiplex PCR technique and PAGE vertical electrophoresis were used to screen the genotype frequencies of 6 STR(D19S253,D14S306,D18S535,D11S2368,D12S391 and D4S2639) systems in Henan population.
    方法对133名无血缘关系河南汉族个体的EDTA抗凝血样用酚-氯仿法提取DNA,应用多重PCR扩增技术结合聚丙烯酰胺凝胶电泳对D19S253、D14S306、D18S535、D11S2368、D12S391、D4S2639 6个基因座在河南地区汉族人群中的基因型分布进行分析。
短句来源
    Study on Screen of High Activity Cellulose Strain and Its Optimum Reaction Conditions
    纤维素酶高活性菌株的选育及酶最适作用条件的研究
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    The ecological influence of pollution of automobile particle matter and the screen effect of highway greenbelt
    汽车颗粒物污染的生态影响与公路绿带的屏障作用
短句来源
    An improved Method to Screen Positive Colonies from Plate
    一种从培养皿上挑取阳性噬菌斑的改进方法
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  screen
We also demonstrate these spatial changes on the screen using Visual Basic language and GIS functions, which will help decision makers to have a clear view of species and site suitability changes over large areas.
      
The authors give a wave function of the state of particles on the screen in abovementioned configurations.
      
Many important proteins, such as some nucleoprotein transcriptional factor, carry out the regular method and construct the bait-BD vector to screen the library containing AD vector.
      
And we used this two-hybrid library to screen FOXA3, a hepatocyte nuclear factor, and found out an interacting protein: complement component C3.
      
Polymerase chain reaction and DNA sequencing were used to screen for KCNQ1, KCNH2, KCNE1, KCNE2 and SCN5A mutation.
      
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Fertili2ed eggs of White Leghorn were used throught the study.The 40-hour chick embryo and the whole yolk were shielded with a lead screen of about 13.2 cm2 in area and 0.9 cm in thickness.The portion of egg white was X-irradiated with a dose of 20250r.Death of the embryos occured on the 4th or 5th day of incubation.In comparison with the non-irradiated control,the hatching rate of the irradiated eggs decreased to 18%,while that of the control was found to be 80% of the fertilized eggs incubated.It was...

Fertili2ed eggs of White Leghorn were used throught the study.The 40-hour chick embryo and the whole yolk were shielded with a lead screen of about 13.2 cm2 in area and 0.9 cm in thickness.The portion of egg white was X-irradiated with a dose of 20250r.Death of the embryos occured on the 4th or 5th day of incubation.In comparison with the non-irradiated control,the hatching rate of the irradiated eggs decreased to 18%,while that of the control was found to be 80% of the fertilized eggs incubated.It was found that,the average hatching rate of the eggs irradiated before incubation (39±13%) was lower than those of the control (61±5%),but higher than those irradiated after incubation (11±5%).In examining the blood cells of the chick embryo irradiated after incubation,we found more abnormalities of cells,such as increase of the number of nucleus from 2 to 4,karyorrhexis,vacuolization in the cytoplasm etc.The X-irradiation of egg white led to a considerable retardation in the somites formation.The greatest retardation occured in the embryos with the egg white irradiated before incubation,of which the somites appeared about 10 hours later than in the control.The retardation of the somites formation and the puny size of the whole embryo were accompanied with the inhibition of S35-methionine incorporation.This implies that the anabolic metabolism is retarded by irradiation.In order to verify whether the irradiated egg white plays an important role in the distant effects of ionizing radiations on chick embryos,the following experiment was performed.Exchange of egg white between the X-irradiated eggs and the unirradiated eggs was made immediately after irradiation.In the control,the unirradiated egg whites were exchanged each other.In the first 3-5 days of incubation,the survival percentages of both the embryos with exchanged unirradiated and irradiated egg white declined side by side.On the 10th day of incubation,those with irradiated egg white all died,while those with exchanged unirradiated egg white kept pace with the control,i.e.,both had the same percentage of survival and both died completely after 16-17 days of incubation.The results described above show that X-irradiated egg white is the chief damaging factor of the distant effects of X-rays on the chick embryos.

孵化40小时鸡胚以铅块遮盖,蛋清接受20250仑X线照射,能够对鸡胚发育产生有害的距离效应,孵化期间胚胎大量死亡,孵化率下降至20%左右,若在孵化前照射蛋清,孵化后对鸡胚亦产生致命性影响,当然,损伤的程度较之孵化后照射略轻,蛋清受照射的早期胚胎的卵黄囊血管区发育不良,血管细弱,血液颜色暗淡,死亡个体多伴有血管破裂、出血和溶血,胚胎出现迟育现象,表现为体形弱小,体节分化受到抑制,并伴随以S~(35)-蛋氨酸掺入为指标的胚胎代谢强度的下降,这些现象,与射线直接照射鸡胚的损伤效应有 许多基本相同之处,交换蛋清的实验证明,X线对鸡胚发育的距离效应,主要是通过受照射蛋清系统这一中间环节而实现的。

1. Extracellular single unit recordings were made with tungsten-in-glass elec trodes in area 17 of the unanaesthetised cat's cortex. Visual stimuli were presented in two ways: An over head projector produced various light patterns on the screen for determining the position of the receptive field and the type of that cell. And a sine-wave and square-wave grating generator constructed from a television set was used for the investigation of spacial frequency characteristics and the contrast-response characteristics...

1. Extracellular single unit recordings were made with tungsten-in-glass elec trodes in area 17 of the unanaesthetised cat's cortex. Visual stimuli were presented in two ways: An over head projector produced various light patterns on the screen for determining the position of the receptive field and the type of that cell. And a sine-wave and square-wave grating generator constructed from a television set was used for the investigation of spacial frequency characteristics and the contrast-response characteristics of the cell.2. All cells that responded to and had spacial frequency selectivity for sinewave gratings were responsive to and spacial frequency selective for square-wave gratings. The optimal frequency for both grating patterns were identical for each cell. The frequency tuning curves of the complex cells for square-wave grating were broader than that of simple cells.3. The great majority of the recorded cells, both simple and complex types, were more responsive to square-wave gratings than to sine-wave gratings. And the contrast thresholds for square-wave gratings were also lower.4. The responses of some few cells (6 complex and I unidentified cells out of 54) to square-wave grating were much higher than that to sine-wave grating in the lower spacial frequency region. And the differences became smaller when the contrast of the gratings were decreased to a level near the threshold for the optimal frequency. This is taken as an indication of the presence or absence of the contributions made by the higher harmonic components within the square-wave gratings.

1.用玻璃绝缘的钨丝电极作细胞外记录,研究不了麻醉猫视皮层17区单个细胞对栅形刺激反应的某些特点。先用光学投影仪在屏幕上投影各种图形以确定细胞感受野位置,并对该细胞感受野性质作一般观察。随后用以电视监示器改装的方波——正弦波栅形发生器提供刺激,研究此细胞的空间频率-反应特性及对比度-反应特性。 2.所有对正弦波栅形有反应和空间频率选择性的细胞同样对方波栅形也有反应和空间频率选择性。它们的最优频率一致。简单细胞的通频带比复杂细胞的略窄。 3.绝大多数细胞对方波栅形的反应都比对同样条件下的正弦栅形反应大(1.33∶1),对比阈值低。 4.记录到少数细胞(7/54,6个为复杂型,1个类型不明),其方波栅形的频率-反应曲线与正弦波栅形的比较,两种反应在低频端有更大的差别,当把栅形对比度降低为接近阈值水平时,这个差别显著变小.

A method of generating gratings on the CRT of an ordinary oscilloscope and calibration of contrast are described. Owing to luminous spot size accurate calibration can only be achieved up to 12 lines/cm on the screen. The contrast sensitivity function (CSF) was determined for 2 young observers by self-adjustment method. Some slight inaccuracy and ambiguity inherent in this method of determining CSF were pointed out.

本文报道了一个在普通示波器荧光屏上产生光栅和测量对比的方法。由于屏上的光点有一定大小和特殊的光晕,对比度和输入电压线性关系的丧失较快;我们只能测准每厘米(屏上)产生12对线的光栅。用主诉方法,测量了两名受试者的对比敏感度函数,并指出了用这方法测定该函数所带来的微小的不准确性.

 
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