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通道功能
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  channel function
     The effect of CACNA1H gene G773D mutation on calcium channel function
     CACNA1H基因G773D突变对钙通道功能的影响
短句来源
     Rem protein expression effects the Ca~(2+) channel function of embryonic mice ventricular myocytes
     Rem蛋白表达对胚胎心室肌细胞Ca~(2+)通道功能的影响
短句来源
     Conclusion:Rem, as a member of the RGK family, binds to Ca~ 2+ channel β subunits and its expression changes Ca~ 2+ channel function and attenuates cytosolic Ca~ 2+ transients in cardiac ventricular myocytes.
     结论:外源的RGK家族中Rem蛋白的表达,通过与心室肌细胞Ca~(2+)通道蛋白的β亚单位(Cavβ)相结合改变了Ca~(2+)通道功能,限制了Ca~(2+)的内流。
短句来源
     Effects of 5-Fluorouracil on cell proliferation and potassium channel function in oral cancer cell line Tb
     5-氟脲嘧啶对口腔癌Tb细胞增殖活性及钾通道功能的影响
短句来源
     Objective To study the effect of CACNA1H gene mutation G773D on calcium channel function.
     目的研究儿童失神癫痫(childhoodabsenceepilepsy,CAE)患儿CACNA1H基因G773D突变对钙通道功能的影响。
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  “通道功能”译为未确定词的双语例句
     KCNE2 modulates the function of Kv4.3 channel
     KCNE2对Kv4.3通道功能的调节作用
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     On the Properties of the I/Q-Channel in FMCW Radar System
     线性调频雷达I/Q通道功能研究
短句来源
     Effects of 2,3-dimethyl-2-butylamine derivatives on potassium channels in arterial smooth muscle cells from rats
     新型2,3-二甲基-2-丁胺衍生物对动脉平滑肌细胞钾通道功能的调节作用
短句来源
     Ca(2+) ionophone A23187 did notabolish the SMS-indueed inhibition of GH release in 7 out of 20 cases (35%) demostratingabnomal function in Ca(2+) channel.
     在35.0%(7/20例)用者的GH瘤细胞A23187未能拮抗SMS对GH分泌的抑制作用,说明SRIF对Ca ̄(2+)通道功能的调节有异常。
短句来源
     To observe what role of the ca 2+ channel and the sarcoplasmic reticulum ca 2+ ATPase(SERCA2a) play in the ventricular electrical remodeling in rabbit left ventricular hypertrophy( LVH) models.
     为探讨肌浆网Ca2 + ATP酶和L型 Ca2 +通道功能变化在左室肥厚 (LVH)心室肌电重构发生中的作用。
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  相似匹配句对
     Classes and Functions of K~+ -Channel
     钾通道的种类和功能
短句来源
     Gene Function of Aquaporin Water Channels
     水通道蛋白基因功能研究
短句来源
     The function of
     睾丸激素的功能
短句来源
     Centralize function.
     功能集成化;
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     nformation passage
     信息通道
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  channel function
Phosphorylation of the R domain at different sites by PKA and PKC is obligatory for the chloride channel function of CFTR.
      
New drug developments target atrial remodeling by modulating ion channel function and receptors of the angiotensin metabolism.
      
Importantly, careful studies of calcium channel function underin vivo conditions are warranted.
      
In failing hearts, RyR2 is PKA hyperphosphorylated resulting in defective channel function due to increased sensitivity to Ca2+ induced activation.
      
The findings support the hypothesis that nickel has an essential function that possibly could affect reproductive performance in higher animals, perhaps through affecting a CNG channel function.
      
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The protein molecules ambeddod in nerve axon membranes carry out thefunction of sodium channels.Along the direction across the membrane,the parts ofa protein molecule that are close to the fatty acid chains of the lipid layers form anumber of α-helices.The polar side chains of amino acids extend to fill the espacebetween the helices.Hydrogen bonds are formed by pairs of dipoles or ionic groupsof the side chains and constitute activative or inactivative gates of the channels.Each polar side chain has two kinds...

The protein molecules ambeddod in nerve axon membranes carry out thefunction of sodium channels.Along the direction across the membrane,the parts ofa protein molecule that are close to the fatty acid chains of the lipid layers form anumber of α-helices.The polar side chains of amino acids extend to fill the espacebetween the helices.Hydrogen bonds are formed by pairs of dipoles or ionic groupsof the side chains and constitute activative or inactivative gates of the channels.Each polar side chain has two kinds of stableconformation,the probability for a sidechain being in conformation Ⅰ or Ⅱ is determined by the Boltzmann law.Underthe action of the membrane electric field,transitions of these side chains from oneconformation to an other initiate the gating current and cause the channel to appearin a closed or open state.The sodium ions pass through the energy barrier by wayof jumping diffusion.In accord with the polarizing properties of a dielectric under the action of anelectric field,some expressions are derived for the steady and kinetic propertiesof the gating current and sodium conductance.These are functions of membranepotential and time.Numerical calculations using these expressions fit the variousexperimental results fairly well.Some properties of sodium channels and gatingprocess have also been discussed.

镶嵌在神经轴突膜中的一种蛋白质分子行使钠通道的功能。沿着跨膜方向,蛋白质分子中与类脂的脂肪酸链相邻部分形成数条α-螺旋。氨基酸极性侧链向螺旋之间的空间伸展,侧链的偶极子或离子基团可以成对地形成氢键,并构成通道的活化或失活闸门。每一极性侧链可以有两种稳定构象,一条侧链处于构象Ⅰ或Ⅱ的几率服从波尔茨曼定律。在膜电场作用下,这些极性侧链在两种构象间发生跃迁,形成门控电流并导致通道呈现关闭或开放态。钠离子以跳跃扩散方式越过势垒。根据电场作用下电介质的极化特性,推导了门控电流和钠电导的稳态和动力学公式,它们是膜电位和时间的函数。用这些公式进行定量估算的结果表踞,与实验事实基本相符。本文并对钠通道和门控过程的一些特性进行了讨论。

Improving the dynamic range of front-end HF channel in SW communi-cation receiver is studied in this paper with aid of Volterra functional series. First, a functional model and a Volterra model of front-end HF channel are founded. Target optimum distribution of front-end HF channel is investigated with a 3rd intermodulation of intersecting point dynamic range as an object function. Then an universal program (NDAP) analysing nonlinear distortion in amplifier by means of Volterra functional series is compiled...

Improving the dynamic range of front-end HF channel in SW communi-cation receiver is studied in this paper with aid of Volterra functional series. First, a functional model and a Volterra model of front-end HF channel are founded. Target optimum distribution of front-end HF channel is investigated with a 3rd intermodulation of intersecting point dynamic range as an object function. Then an universal program (NDAP) analysing nonlinear distortion in amplifier by means of Volterra functional series is compiled on the foundation of the nonlinear transistor model. A double-transistor-parallel amplifier with dynamic range is developed. The phase modulation effect of RF signal on LO signal in a mixer is briefly discussed, and methods of improving the linearity in the mixer are introduced. A FET passive high-level double-balanced mixer of high linearity is also made. Finally, A front-end HF channel with high dynamic range is realized with an intersecting point dynamic range of 97.9 dB by using the 3rd intermo-dulation and the noise is suppressed to 5,8 dB or less.

本文应用Volterra泛函级数理论,研究扩大短波通信接收机前端高频通道的动态范围。首先建立了前端高频通道的功能模型和Volterra模型,采用三阶互调截点动态范围指标为目标函数,对前端高频通道指标的优化分配问题进行了研究。在建立晶体管非线性模型的基础上,编制了用Volterra泛函级数法分析放大器非线性失真的通用程序NDAP,并研制了大动态范围的双管并联放大器,进而简述了混频器中信号对本振的相位调制效应,提出了改善混频器线性的方法。研制了高线性的场效应管无源高电平双平衡混频器,最后实现了大动态范围的前端高频通道,通道的噪声系数小于等于5.8dB,三阶互调截点动态范围达到97.9dB。

In order to evaluate the function of brainstem auditory pathway in diabetic patients,recordings of BAEP were made in 18 diabetics with normal hearing.The results were compared with those of 18 sex-and age-matched non-diabetic subjects.The results showed that the mean interpeak latenciesof wave I~V were significantly delayed in the diabetic group.The latencies of BAEP were significantly correlated to the levels of blood glucose and HbAl.The above results suggested that the function of brainstem auditory pathway...

In order to evaluate the function of brainstem auditory pathway in diabetic patients,recordings of BAEP were made in 18 diabetics with normal hearing.The results were compared with those of 18 sex-and age-matched non-diabetic subjects.The results showed that the mean interpeak latenciesof wave I~V were significantly delayed in the diabetic group.The latencies of BAEP were significantly correlated to the levels of blood glucose and HbAl.The above results suggested that the function of brainstem auditory pathway in diabetic patients was impaired,and it was probable that hype-rglycaemia was one of the causes.

为了估价糖尿病(DM)患者脑干听通道功能是否完整。我们利用脑干听觉诱发电位(BAEP)记录,对18例听力正常的DM患者与性别、年龄相配对的非DM者进行了比较。结果显示;DM组BAEP Ⅰ~Ⅴ波峰间潜伏期(IPL)较对照组显著延长(P<0.05);DM患者BAEP潜伏期改变与血糖、HbA_1水平密切相关(P<0.05)。上述结果提示,DM患者有脑干听通道受累,血糖控制不佳可能为其原因之一。

 
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