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retinal
相关语句
  视网膜
     Laser-induced Chorioretinal Venous Anastomosis for Retinal Vein Occlusion by means of ICGA
     ICGA指导下激光诱导脉络膜视网膜静脉吻合治疗视网膜静脉阻塞
短句来源
     Metalloproteinases in Traumatic Retinal Detachment
     金属蛋白酶在外伤性视网膜脱离中的表达
短句来源
     Synaptic Plasticity and Neural Circuitry in the Retinal Outer Plexiform Layer: Experiments and Models
     视网膜外网状层突触可塑性和神经回路研究:实验及模型
短句来源
     In Vitro Study on the Neurotrophin and Neuroprotection of Retinal Neurons
     视网膜神经元营养和保护的体外实验研究
短句来源
     Modulation of Signal Processing of Retinal Neurons by Zinc
     锌离子对视网膜神经元信号传递的调制
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  视黄醛
     NRDR had the enzymatic activity of retinal reductase whoseKmandVmaxwere(2.7±0.18)μmol/L and(0.357±0.047)μmol.
     NRDR具有视黄醛还原酶活性,其催化酶促反应的Km和Vm ax分别为(2.7±0.18)μmol/L和(0.357±0.047)μmol/(mg.m in)。
短句来源
     In this model, C13-C14 of Retinal can be in line with Cb-C4 of Lys-216, thus the isomerization will mainly concern the rotation of C15 and N4 two atoms.
     该模型中视黄醛的C_(13)—C_(14)与Lys—216的C~δ—C~e处于一直线上,这样,顺反异构只涉及视黄醛C_(15)和Lys—216的N~ζ绕此直线为抽的旋转.
短句来源
     The results indicated the NRDR was a NADP-dependent retinal reductase whose Km and Vmax for retinal reduction were (2.8±0.24) μM and (0.468±0.036)μmol/(min·mg), respectively.
     以纯化的重组蛋白质为材料,分析NRDR的催化活性和酶促反应性质。 结果证实,人肝脏NRDR具有视黄醛还原酶活性,在辅酶Ⅱ存在条件下其催化视黄醛还原成视黄醇的Km值和Vmax值分别(2.8±0.24)μM和(0.468±0.036)μmol/(min·mg)。
短句来源
     Ml-trans Retinoic Acid can be produced via a two steps metabolism from vitamin A, which is also called retinol, with an intermediate product of retinal.
     维甲酸是由维生素A(Vitamin A)也称视黄醇(Retinol)经两步代谢而成,中间产物为视黄醛
短句来源
     The π bond order between C 11 and C 12 is 1.586 0 in excited state less than 1.746 9 in ground state, so excited state 11 cis retinal portion of rhodopsin is easily isomerized to the all trans form of metarhodopsin Ⅱ when rhodopsin absorbs a photon of light.
     且视黄醛骨架结构共轭体系中 C11-C12 之间激发态的 π键级为 1 .5 860 ,明显小于基态 π键级 1 .7469值 ,故当紫红质吸收光能进入激发态之后 ,1 1 -顺式视黄醛色基则更易发生异构化
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  视网膜的
     2.Morphological examination: The retinal thickness of outer nuclear layer and photoreceptor cells in control group was(98.4±1.8) μm.
     2)形态学检查测到正常组大鼠中心视网膜的外视网膜厚度为(98.4±1.8)μm。
短句来源
     The correlation of the mean area of the fluorescein leakage and the mean retinal thickness was obvious(r=0.73,P<0.05).
     激光斑视网膜的平均厚度与平均荧光渗漏面积有相关性(r=0.73,P<0.05)。
短句来源
     Objective To observe the changes of nuclear factor-κappa B(NF-κB)in the course of N-methyl-N-nitrosourea(MNU)-induced apoptosis of rat retinal photoreceptor cells and investigate the mechanism of MNU-induced retinal damage.
     目的观察核因子κappaB(NF-κB)在N-甲基-N-亚硝脲(MNU)诱导大鼠视网膜光感受器细胞凋亡中的的变化,探讨MNU损伤视网膜的机制。
短句来源
     T he retinal area was 3.04±0.29 mm2 with the disc located near the ventra l and temporal ar ea.
     视网膜面积为3.04±0.29 mm2,视神经乳头位于视网膜的偏腹颞侧.
短句来源
     Retinal abnormalities in CADASIL:A retro-spective study of 18 patients
     CADASIL视网膜的异常:18例患者的回顾性研究
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  “retinal”译为未确定词的双语例句
     Adrenomedullin Modulation of Retinal Pigment Epithelial Cells and the Intracellular Signal Transduction Pathways
     肾上腺髓质素调节视网膜色素上皮细胞及细胞内信号传导通路的研究
短句来源
     MHC Ⅱ Transactivator Promoter (CIITApⅣ) Regulation of HLA-DR and Fas Ligand Expression on Retinal Pigment Epithelial (RPE) Cell in Vitro and in Vivo Study
     MHC Ⅱ类反式激活蛋白启动子Ⅳ(CIITApⅣ)对视网膜色素上皮细胞的免疫调节作用
短句来源
     Inhibition of Expression of VEGF in Retinal Pigment Epithelium Cells under Hypoxia with Specific siRNA Targeting HIF-1_α
     HIF-1_α特异性siRNA对缺氧状态下RPE细胞表达VEGF的抑制
短句来源
     Expression and Mechanism of bFGF of Retinal M(?)ller Cells in Diabetic Retinopathy
     糖尿病视网膜病变中M(?)ller细胞bFGF的表达及其机制的研究
短句来源
     Experimental Studies on the Xenotransplantation of Microencapsulated Bovine Retinal Pigment Epithelial Cells into Parkinsonian Rats
     微囊化牛视网膜色素上皮细胞移植治疗帕金森病大鼠的实验研究
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  retinal
Best-corrected visual acuity, intraocular pressure, retinal thickness and FFA were observed.
      
At the early stages of retina development, the neuroepithelial cells divide synchronously, thus leading to the accumulation of a certain number of the retinal rudiment cells.
      
Synchronous divisions precede the asynchronous ones, when the differentiation of the retinal cells is initiated.
      
The multipotent cells of the retinal ciliary-terminal zone and cells of the pigment epithelium in the eye periphery provide for the growth of amphibian and fish eyes during the entire life of these animals.
      
The main event of retinal regeneration in newts is the transdifferentiation of the pigment epithelium cells.
      
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(1) The spectral sensitivity of the α-wave of human electroretinogram elicited by stimulation with a 52° field in Maxwellian view was studied in 4 subjects with normal colour vision. According to our previous analysis, the main part of the α-wave thus elicited (α_p), in distinction from a small and more light-adaptable scotopic part (α_s), is regarded as being "photopic". Furthermore, α_s inevitably appears only after the peak of α_p and therefore does not interfere with the measurement of the latter's maximum....

(1) The spectral sensitivity of the α-wave of human electroretinogram elicited by stimulation with a 52° field in Maxwellian view was studied in 4 subjects with normal colour vision. According to our previous analysis, the main part of the α-wave thus elicited (α_p), in distinction from a small and more light-adaptable scotopic part (α_s), is regarded as being "photopic". Furthermore, α_s inevitably appears only after the peak of α_p and therefore does not interfere with the measurement of the latter's maximum. Experiments were done both under a constant light adaptation(1mL) and in complete darkness. In the former case a peripheral field of 132° with a luminance also of 1mL was used. In the latter condition, the presence or absence of the peripheral field made little difference to the result of determination. (2) The S_λ of the α_p-wave under 1mL adaptation has been compared with Weale's S_λ curve of 10° retinal periphery under a light adaptation of 0.95 e. f. c. and Wald's curve of 8° peripheral cone. All determinations at 632 mμ are made to coincide in order to facilitate the comparison. Regarding the general trend, the present determination resembles Weale's much more closely than Wald's. Both our and Weale's determinations show a gradual increase in S_λ up to nearly 1 log_(10) unit from 632 mμ to 458 mμ with reference to Wald's curve. In spite of the resemblance of our determination with Weale's, it is considered that the α_p-wave still contains some responses of the rods under 1 mL light adaptation. (3) Under dark adaptation, the S_λ of α_p shows an incomplete reverse Purkinjs shift corresponding to a relative increase of sensitivity of nearly 1 log_(10) unit at the blue end of the spectrum. (4) In α_p not exceeding 30μV, an earlier (15—20 msec peak latency) and a later (20—28 msec peak latency)portion can be shown to be more sensitive to the long and to the short wavelength spectral lights respectively.

(一)本工作测定了利用52°域的Maxwell投射光引起的視网膜电图α波的光譜敏感性(S_λ)。受試者四人,色觉均正常。这样引起的α波的波峰,决定于一般所鉴別的“明視”α波(α_p)。实驗是在1mL的明适应下和在完全暗适应下进行的。 (二)在1mL明适应下所测定的α_p波的S_λ曲綫,曾与Weale在0.95 e.f.c.明适应下所测得的視网膜周边10°的明視S_λ曲綫以及Wald的8°位置的圓錐細胞S_λ曲綫相比較,使各曲綫在632mμ处相重合。α_p的S_λ度比Wald的測定高,从632mμ到458mμ,逐漸增高到約1对数单位。在1mL的明适应下,α_p波实际上还有圓柱細胞的反应成分。 (三)暗适应下,α_p波对藍光的相对敏感性增高約1对数单位,Purkinje位移不完全。 (四)在不超过30μV振幅的α_p波中,可以分辨出一个峰潜伏期約15—20毫秒和一个峰潜伏期約20—28毫秒的部分,它們分別对长波段和对短波段的光較为敏感。

According to the level of light adaptation, two types of the time course of change in b-wave sensitivity are observed in the carp retina. They are respectively designated as the D-type (decrease type) and the R-type (recovery type). The D-type, which occurs when the adapting intensity is low, exhibits only a decrease in sensitivity, fast at first and thereafter gradually reaching a stable value in a few minutes. In contrast to this, the R-type, which takes place only when the adapting intensity exceeds a certain...

According to the level of light adaptation, two types of the time course of change in b-wave sensitivity are observed in the carp retina. They are respectively designated as the D-type (decrease type) and the R-type (recovery type). The D-type, which occurs when the adapting intensity is low, exhibits only a decrease in sensitivity, fast at first and thereafter gradually reaching a stable value in a few minutes. In contrast to this, the R-type, which takes place only when the adapting intensity exceeds a certain level (1.95×10~(-6)w/cm~2 on the retina surface), is characterised by an initial drastic fall of sensitivity (for 5~8log units) and an ensuing stage of recovery to a certain extent. The recovery follows roughly an exponential course and lasts longer with greater extent of recovery, as the adapting intensity increases. For instance, regain of sensitivity may attain as much as 2 log units and last as long as 30 min. at intensity 1.95×10~(-6)w/cm2. At intermediate adapting intensities, the time course of change in retinal sensitivity pertains to a transitional type with different degrees of relative prominence of the two types. The intensity level at which this transition takes place corresponds exactly to that when the rod activity is being taken over by the cone. This was ascertained by a series of analysis of the b-wave activities such as spectral sensitivity, incremental threshold, the amplitude vs intensity relationship and critical fusion frequency at different levels of light adaptation. The present work suggests strongly that the D-type and R-type reflect respectively the adaptational characteristics of the rod and the cone systems. The possibility that the recovery of b-wave sensitivity at high intensity is due to pigment migration is excluded, and it is believed that the activity of the cone system and the release inhibition of the cone by the rod are two possible causes of these phenomena. In light of the present finding relevant studies are being discussed.

在明适应过程中,随着适应光强的不同,鲫鱼视网膜电图b波的敏感度呈现两种不同类型的变化,分别定名为D型(下降型)和R型(回复型)。当适应光较弱时为D型——敏感度随适应时间逐渐降低,在几分钟内达到稳定。但当适应光强超过一定水平后(1.95×10~(-6)瓦/平方厘米,网膜水平),即为R型——敏感度一开始急剧降低(5~8对数单位),随后逐渐回复,回复的时间进程近似为指数函数。适应光愈强,回复的幅度愈大,达到稳定的时间愈长,当适应光强为1.95×10~(-4)瓦/平方厘米时,分别为2.3对数单位和30分。在中间的适应水平是一种过渡的类型,兼有D型和R型的某些特点。对不同适应水平时b波的光谱敏感特性、辨增阈、振幅-强度曲线和闪光融合频率的分析表明,网膜活动由杆细胞系统向锥细胞系统过渡的明适应水平恰与由D型变化向R型变化的水平相当,这一事实强烈地提示,D型和R型变化分别表示杆细胞系统和锥细胞系统的适应特性。R型变化基本上与网膜内色素颗粒的漂移无关,可能归因子锥细胞活动以及它从杆细胞的抑制中解脱出来。对若干有关的工作进行了讨论。

According to the level of light adaptation, two types of the time course of change in b-wave sensitivity are observed in the carp retina. They are respectively designated as the D-type (deorease type) and the R-type (reoovery type). The D-type, whioh occurs when the adapting intensity is low, exhibits only a deorease in sensitivity, fast at first and thereafter gradually reaching a stable value in a few minutes. In contrast to this, the R-type, which takes place only when the adapting intensity exceeds a certain...

According to the level of light adaptation, two types of the time course of change in b-wave sensitivity are observed in the carp retina. They are respectively designated as the D-type (deorease type) and the R-type (reoovery type). The D-type, whioh occurs when the adapting intensity is low, exhibits only a deorease in sensitivity, fast at first and thereafter gradually reaching a stable value in a few minutes. In contrast to this, the R-type, which takes place only when the adapting intensity exceeds a certain level (1.95×10~(-6)w/cm~2 on the retina surface), is characterised by an initial drastic fall of sensitivity (for 5~8 log units) and an ensuing stage of recovery to a certain extent. The recovery follows roughly an exponential course and lasts longer with greater extent of recovery, as the adapting intensity increases. For instance, regain of sensitivity may attain as much as 2 log units and last as long as 30 min. at intensity 1.96×10~(-6)w/cm~2. At intermediate adapting intensities, the time course of change in retinal sensitivity pertains to a transitional type with different degrees of relative prominence of the two types. The intensity level at which this transition takes place corresponds exaotly to that when the rod aotivity is being taken over by the cone. This was ascertained by a series of analysis of the b-wave activities such as speotral sensitivity, incremental threshold, the amplitude vs intensity relationship and critical fusion frequenoy at different levels of light adaptation. The present work suggests strongly that the D-type and R-type reflect respectively the adaptational characteristics of the rod and the cone systems. The possibility that the reoovery of b-wave sensitivity at high intensity is due to pigment migration is excluded, and it is believed that the activity of the cone system and the release inhibition of the cone by the rod are two possible causes of these phenomena. In light of the present finding relevant studies are being discussed.

在明适应过程中,随着适应光强的不同,鲫鱼视网膜电图b波的敏感度呈现两种不同类型的变化,分别定名为D型(下降型)和R型(回复型)。当适应光较弱时为D型——敏感度随适应时间逐渐降低,在几分钟内达到稳定。但当适应光强超过一定水平后(1.95×10~(-6)瓦/平方厘米,网膜水平),即为R型——敏感度一开始急剧降低(5~8对数单位),随后逐渐回复,回复的时间进程近似为指数函数。适应光愈强,回复的幅度愈大,达到稳定的时间愈长,当适应光强为1.95x10~(-4)瓦/平方厘米时,分别为2.3对数单位和30分。在中间的适应水平是一种过渡的类型,兼有D型和R型的某些特点。对不同适应水平时b波的光谱敏感特性、辨增阈、振幅-强度曲线和闪光融合频率的分析表明,网膜活动由杆细胞系统向锥细胞系统过渡的明适应水平恰与由D型变化向R型变化的水平相当,这一事实强烈地提示,D型和R型变化分别表示杆细胞系统和锥细胞系统的适应特性。R型变化基本上与网膜内色素颗粒的漂移无关,可能归因于锥细胞活动以及它从杆细胞的抑制中解脱出来。对若干有关的工作进行了讨论。

 
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