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The thermodynamic behaviour in the separation of molecular imprinting was studied.
研究了分子印迹分离过程中的热力学行为,测定了萘普生和酮洛芬分子印迹分离过程中的的焓变、熵变和自由能变化,计算结果得出ΔH和ΔS的值均为负值,并且熵的变化很小,这说明萘普生和酮洛芬分子印迹拆分过程是受焓控制的,从而进一步说明影响分子印迹分离的两个主要因素中,与模板分子互补的功能基比空间孔穴占有更重要的作用。
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In addition, the principle of target interaction models was used as guideline to discuss the specific rebinding property with controlling protein concentration, electrolyte and temperature.
本文还运用目标作用模式原理对大分子印迹琼脂糖微球与目标蛋白质作用的特点及蛋白质浓度、电解质和温度的调适进行了讨论。
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Protein-macromolecular imprinting, macromolecularly imprintied agrosepolymer microspheres, phase-inverse suspension gelation, specific rebinding point,principle of target interaction models PTIM
蛋白质大分子印迹;大分子印迹琼脂糖微球;反相悬浮凝胶法;特异重结合点;目标作用模式原理
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To produce the scientific evidence for developing and manufacturing new antitumor drugs.Methods: 1 The inhibitory effect on cell growth of Hela was measured by MTT assay in treated or untreated groups (3.125, 6.25, 12.5, 25, 50μg/ml TAM and control) for three different treatment times (24h, 48h and 72h).2 Apoptosis and cell cycle were measured by FCM in four experimental groups (0, 4, 16, 40μg/ml TAM) for 48h.3 Adopting Wright and Giemse's staining to observe the morphology of Hela cells which treated with 40μg/ml TAM.4 Using invasion experiment to detect the Hela cells'invasive abilities which treated with 40μg/ml TAM.5 The protein expressional levels of P-ERK, ERK, C-myc and Cyclin D1 in Hela cells untreated or treated with 4, 16, 40μg/ml TAM for 24h were measured by Western blot.6 Expression of anti-apoptotic gene bcl-2, apoptotic gene bax and MMP-9 in Hela cells of four experimental groups (0, 4, 16, 40μg/ml TAM for 24h), were observed by revers transcription PCR.7 The protein expression of P-ERK, ERK, Bcl-2 and Bax in Hela cells treated with 40μg/ml TAM for 24h observed by laser scanning microscopes.
1采用四甲基偶氮唑蓝法检测不同浓度北豆根总碱(3.125、6.25、12.5、25、50μg/ml)处理不同时间(24、48和72小时)对Hela细胞增殖反应的抑制作用。2采用流式细胞技术(flow cytometry,FCM)检测不同浓度北豆根总碱(0、4、16、40μg/ml)作用48小时,对Hela细胞凋亡及周期变化的影响。3瑞氏-姬姆萨染色后显微镜观察北豆根总碱(0、40μg/ml)作用24小时后Hela细胞形态学变化。4采用Transwell小室法检测北豆根总碱(0、40μg/ml)作用24小时后对Hela细胞侵袭性的影响。5采用免疫印迹方法检测不同浓度北豆根总碱(0、4、16、40μg/ml)作用24小时后,Hela细胞中磷酸化ERK、ERK、C-myc、CyclinD1的表达变化。6采用逆转录-聚合酶链反应(revers transcription PCR,RT-PCR)半定量检测北豆根总碱(0、4、16、40μg/ml)作用24小时,Hela细胞抗凋亡基因bcl-2、促凋亡基因bax、基质金属蛋白酶-9(MMP-9)的表达变化。7应用激光共聚焦显微镜(laser scanning microscope,LSM)观察北豆根总碱(0、40μg/ml)作用24小时后,Hela细胞内P-ERK、ERK、Bcl-2、Bax蛋白的表达变化。
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We use the term "technicity" to refer to the trace of it's function.
技术产生作用并留下技术作用的印迹,即"技术性"。
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In order to investigate the role of ICAM-1 and VCAM-1 in the pathogenesis of glomerulonephritis, ICAM-1 and VCAM-1 expression were evaluated from both protein and gene level by in vivo and in vitro study, We have conducted (1) immunocytochemical analysis and in situ hybridization to examine the alteration in expression of ICAM-1 and it's relationship with interstitial infiltrating cells and TNFα; A total of 64 renal biopsies were classified in three groups according to the degree of cellular proliferation and infiltration in glomerulus;(2) indirect immunofluoresence and immunoblotting. methods to detect the VCAM-1 level both in renal tissue and in serum from the patients of lupus nephritis (17cases) and crescentic nephritis (4 cases);(3) Cell ELISA and northern blot technique to study the effects of TNFα and IL-1β on ICAM-1 and VCAM-1 surface expression and gene expression by cultured human mesangial cells .
为了探讨ICAM-1和VCAM-1在肾小球疾病中的作用,本文从蛋白质和基因两个水平,整体(研究ICAM-1时根据肾小球内细胞增生和浸润程度,将64例病人分为A.B.C三组)和细胞培养两个方面,做了如下工作,(1)利用免疫细胞化学和原位杂交技术观察了ICAM-1在64例肾小球疾病患者中的表达及其与间质浸润细胞、TNFα之间的关系;(2)利用间接免疫荧光和膜免疫印迹方法检测了VCAM-1在17例狼疮肾炎和4例新月体肾炎病人肾组织及血清中的表达;(3)利用细胞ELISA和Northern杂交技术研究了IL-1β或TNFα对体外培养的人肾小球系膜细胞ICAM-1和/或VCAM-1表面表达及mRNA表达的调节作用。
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The IR analyses proved that the polymerization effects really occurred. The BET adsorption test indicated that the adsorption amount of MIPMs to LMD was as three times as that of non-imprinted microspheres. The controlled release test indicated that the release ratio of LMD on NIPMs was linearly increased with increasing time, which suggests that the release process is completely controlled by diffusion. Meanwhile, the release ratio of LMD on MIPMs was curvedly increased with increasing time, which indicates that the release process is controlled by both diffusion and the imprinting effect.
药物扩散实验表明, LMD在非印迹微球上的释药率几乎与时间呈直线关系,说明其释药过程完全受扩散控制;而LMD在MIPMs上的释药率则呈曲线上升趋势,说明其释药过程除了受扩散控制外,还受到药物模板分子与MIPMs之间的印迹效应的协同作用的控制,从而达到了缓释药物分子的目的。
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Adsorption isotherms were obtained with static adsorption method. Isosteric adsorption enthalpy, adsorption free energy and adsorption entropy were calculated according to the relationship of thermodynamic function. Isosteric adsorption enthalpy was between 29 kJ-mol"1 ~ 34 kJ'mol"1, which reveals that the main molecularly recognition interaction is hydrogen bonding.
通过静态吸附试验,测定了球状分子印迹聚合物对水溶液中茶碱的吸附等温线,利用热力学函数关系计算了球状分子印迹聚合物的等量吸附焓,吸附自由能和吸附熵,等量吸附焓在29.17 kJ·mol~(-1)~34.54 kJ·mol~(-1)之间,推测其分子识别的作用力主要为氢键作用。
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Secondly,UV spectrophotometry was adopted to research the combination action on SM_2 and SIZ with MAA and 4-Vp.The combination action of functional monomer with template molecules were produced in the results. Then,the prediction imprinting principle of SM_2 and SIZ were given. The diagrams of infrared spectrum were analysed in MAA and 4-Vp and IMPs of SM_2. It was discoved that the absorbability peak of C=C function group in the IMPs were turn to be very low ,but the function group of carboxylic acid and pyridyl in the IMPs were no evidence change, and the condition was created in the molecular recognition of MIPs. Thermal Analysis was adopted to research IMPs ,in which ,a better thermal stability and its decompose temperature were showed in the results.
其次,本文利用紫外分光光度法研究磺胺二甲嘧啶和磺胺异噁唑与甲基丙烯酸或4-乙烯基吡啶的结合作用,结果表明,溶液中的功能单体与模板分子之间产生了结合作用,并预测磺胺二甲嘧啶和磺胺异噁唑印迹机理;分别分析了功能单体甲基丙烯酸、4-乙烯基吡啶、磺胺二甲嘧啶和磺胺异噁唑分子印迹聚合物的红外谱图,经过对比发现制得的印迹聚合物中C=C双键峰很小,并且功能键羧酸键和吡啶氮没有明显变化,这为聚合物特异识别特性创造了条件;利用综合热分析仪,对分子印迹聚合物进行综合热分析,结果表明分子印迹聚合物具有较好的热稳定性,分解温度也较高。
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objective: to prepare the molecularly imprinted composite membranes with propofol as template.methods: with the ultraviolet light and initiator, template molecular propofol, functional monomer methacrylate and crosslinking agent ethylenegly-coldimethacrylate formed molecularly imprinted composite membrane through polymerization on the surface of polyvinyli-dene fluoride microporous membrane.inspection of the combination of template molecule and functional monomer, characterization of the membrane surface morphology with scanning electron microscopy.results: the morphology of composite membranes was well.propofol bonded to methylacrylic acid with hydrogen bond.conclusion: the method of ultraviolet light-struck is feasible for preparation of molecularly imprinted composite membranes with propofol as template.
目的:制备异丙酚分子印迹复合膜。方法:在紫外光照和引发剂的作用下,模板分子异丙酚、功能单体甲基丙烯酸和交联剂乙二醇二甲基丙烯酸酯在聚偏氟乙烯微孔滤膜表面聚合形成分子印迹复合膜,考察模板分子和功能单体的结合特性,用扫描电镜表征膜的表面形态。结果:复合膜形态良好,异丙酚和甲基丙烯酸以氢键的方式缔合。结论:用紫外光照射法可以制得异丙酚分子印迹复合膜。
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imprinted gene:印迹基因
具有这种现象的基因称为印迹基因(Imprinted Gene)(1). 基因组印迹已经成为外因遗传学(Epigenetics)理论的重要组成部分. 基因印迹在人类遗传性疾病尤其是肿瘤发生中的作用正引起越来越多的注意. 本文就基因印迹的研究现状以及与消化道肿瘤关系的研究进行综述.