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你可能喜欢molish反应中槲皮素与芦丁界面现象有什么区别_百度知道
molish反应中槲皮素与芦丁界面现象有什么区别
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用弱极性展开剂展开，苷在前，极性不同。 聚酰胺薄层色谱当中用极性展开剂展开两者一个是苷另一个是苷元
芦丁分层，上层为黄色透明溶液，下层为紫红色环槲皮素有人说分层，上层黄色下层透明，但我自己做的无明显分层，可能是没做好，原理是强酸作用下，在芦丁中的芸香糖部分与10%的萘酚反应形成紫色环，而槲皮素没有糖结构
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我们会通过消息、邮箱等方式尽快将举报结果通知您。目的探讨美国麻醉医师协会分级(ASA分级)、手术风险评分(SRS)和生理及手术严重性(POS-SUM)评分系统对高龄患者急诊手术风险的评定意义。方法回顾性分析北京大学第一医院普通外科病房2009年1月～2010年12月行急诊手术且年龄在60岁以上(含60岁)共252例患者的临床资料。结果该组患者实际发生并发症和死亡分别为115例(45.60%)和7例(2.80%)。随着ASA分级及SRS评分的提高,手术后并发症率也升高(P=0.001,P=0.004)。POSSUM评分系统预测的术后并发症143例(56.70%),与实际相较差异无显著性(P=0.448),预测死亡36例(14.40%),存在明显高估(P的翻译是:The goal discusses the US to anaesthetize doctor association graduation (the ASA graduation), the surgery risk to grade (SRS) and physiological and evaluation significance of surgery grave (POS-SUM) evaluation system to advanced age patient emergency surgery risk. Method review analyzes the Beijing University first hospital general surgery hospital ward in January,
years in December the good emergency surgery and age over 60 years old (including 60-year-old) the clinical data of 252 cases of patients. Finally this group of patients had the complication and death actually respectively are 115 cases (45.60%) and 7 cases (2.80%). Along with the ASA enhancement of graduation and SRS grading, after the surgery, the complication rate also elevates (P=0.001, P=0.004). After technique of POSSUM evaluation system predict that the complication 143 cases (56.70%), with compares the difference not to have the significance actually (P=0.448), forecast that died 36 cases (14.40%), has the obvious overestimation (P
将端含氢硅油与烯丙基聚氧烷乙基环氧基醚进行加成反应,再使用端氨基聚醚对其进行氨化反应,得到聚醚嵌段改性硅油。并用于全棉织物、涤棉织物的整理。结果表明:经聚醚嵌段改性硅油整理后的织物具有良好的亲水性、手感、白度等。的翻译是:Will carry including the hydrogen silicone oil and allyl concentrated oxygen alkane ethyl group epoxy group ether carries on the addition reaction, the use end amino polyether carries on the ammoniation to respond to it again that obtains the polyether block modified silicone oil. And, washes the reorganization of woven cottons for the entire woven cottons. The result demonstrates that: Has the good water affinity, feel, albedo after the polyether block modified silicone oil reorganizes the fabric.
以33份三色堇种质为试材,采用层次分析法对其观赏性进行综合评价。三色堇观赏性评价的层次分析模型分为:目标层(综合观赏性)、准则层(株形,花,叶)和方案层(分枝数,株幅,株高,花期,花斑,花色,花数,花径,叶面积,叶长和叶宽)。在准则层中,花的权重最大,其次为株形;在花的方案层中,花径的权重最大,其次为花数。构建的模型完整、合理、符合实际,适用于三色堇资源观赏性评价。33份三色堇材料观赏性评价结果表明,材料可分为3个等级,其中CYS-H3、229.11、229.19、EWO、HSY4-1观赏价值高,可优先选择利用。的翻译是:Takes 33 pansy idioplasms as to try the material, carries on the quality synthetic evaluation to its ornamental with the analytic hierarchy process. Analytic hierarchy model of pansy ornamental appraisal is divided: Target stratum (synthesis ornamental), criterion level (shape, flower, leaf) and scheme level (branching number, high, flowering season, piebald, variety, colored number, flower-strewn path, leaf area, Ye Chang and blade width). In the criterion level, the colored weight is biggest, In the colored scheme level, the weight of flower-strewn path is biggest, next is the colored number. The model of construction complete and reasonable, suits the reality, for pansy resources ornamental appraisal. 33 pansy material ornamental measure results showed that the material may be divided into 3 ranks, CYS-H3, 229.11 and 229.19, EWO and HSY4-1 watching value is high, may first choose the use.
【目的】研究花期前后高温胁迫对不同耐热性玉米光合特性及产量品质的影响。【方法】以耐热基因型浚单20和热敏感基因型驻玉309为材料,分别于花前(吐丝前0—8 d)和花后(吐丝后0—8 d)进行高温处理,测定叶片的叶绿素相对含量(SPAD)、光合及叶绿素荧光参数、磷酸烯醇式丙酮酸羧化酶(PEPCase)和核酮糖二磷酸羧化酶(RuBPCase)活性及籽粒的产量和品质。【结果】花期前后高温胁迫导致2个基因型玉米产量显著下降,浚单20产量下降幅度小于驻玉309,且花后高温处理影响大于花前处理;高温处理降低了穗位叶净光合速率(Pn)、气孔导度(Gs)、最大光化学效率(Fv/Fm)、光量子产量(ΦPSII)、光化学猝灭系数(qP)、磷酸烯醇式丙酮酸羧化酶(PEPCase)和核酮糖二磷酸羧化酶(RuBPCase)活性,提高了细胞间隙CO2浓度(Ci)和非光化学猝灭系数(qN)。【结论】花期前后高温胁迫对玉米的光合有显著影响,导致玉米产量显著降低,品质受到显著影响。高温胁迫下耐热玉米基因型比热敏感玉米基因型具有较高的叶绿素含量和光合能力,产量和品质受高温影响较小。的翻译是:
本研究旨在分析儿童急性淋巴细胞白血病(c-ALL)的肿瘤特异性蛋白,寻找新的肿瘤蛋白分子标志物。应用双向凝胶电泳(2-DE)及基质辅助激光解吸电离飞行时间质谱分析(MALDI-TOF-MS)及联网检索数据库,鉴定表达上调的差异蛋白,并应用细胞免疫组织化学法验证相关蛋白。结果表明,获得了4个表达上调的蛋白点,经质谱分析初步鉴定出其中2个表达上调的差异蛋白为谷胱甘肽S转移酶P和阻殖蛋白;细胞免疫组织化学法检测发现,二者在儿童ALL细胞内的表达阳性率明显高于对照组,差异具有统计学意义(P的翻译是:This research for the purpose of analyzing the children's acute lymphoblastic leukemia (c-ALL) tumor specificity protein, seeks for the new tumor protein molecule designated object. Applies the two-dimensional gel electrophoresis (2-DE) and maldi laser ablation analyzes (MALDI-TOF-MS) and networking retrieval database, the difference protein that the appraisal expression raises, and using cellular immunity organization chemical process confirmation related protein. The results show that obtains protein point that 4 expressions have raised, appraises initially after the mass spectroscopy the difference protein that 2 expressions raise breeds the protein for glutathione S transferase P The cellular immunity organization chemical process examination discovery, the two expression masculine rate in children's ALL cell clearly are higher than the control group, the difference have the statistical significance (P
Web Service技术是面向服务架构以及实现信息系统集成的重要技术。它类似一个远程的服务提供者,通过它可实现远程服务信息访问。该技术以其跨平台性在Web应用程序中得到了广泛的应用。主要介绍了在ASP.NET框架下如何利用Web Service技术进行网络应用程序开发。的翻译是:The Web Service technology is SOA as well as realizes the key technology of information system integrating. It similar long-distance service provider, may realize the long-distance service information access through it. This technology obtained the widespread application in the Web application by its cross platform. Mainly introduced how to use the Web Service technology to carry on the intranet program development within the framework of ASP.NET.
研究了不同浓度的铅对绿穗苋种子萌发及幼苗生长的影响。结果表明:低浓度Pb2+在一定程度上促进绿穗苋种子的萌发;随着Pb2+浓度的增加,绿穗苋种子的活力指数、根长、苗长和叶绿素含量皆降低,但丙二醛(MDA)含量升高;高浓度Pb2+对绿穗苋根生长的抑制作用大于茎轴的。铅对绿穗苋种子萌发的影响不显著,但对绿穗苋幼苗的抑制程度随铅浓度的增大呈递增趋势。的翻译是:Has studied the effect of lead of different density on the green Guangzhou Amaranthus seed germination and seedling growth. The result demonstrates that: Low concentration Pb2+ promotes the germination of green Guangzhou Amaranthus seed With increase of Pb2+ density, the vitality index and root of green Guangzhou Amaranthus seed are long, Miao Chang and chlorophyll content all reduce, but C dialdehyde (MDA) Highly concentrated Pb2+ is bigger than the stem axis to the inhibitory action that the green Guangzhou Amaranthus root grows. The lead is not remarkable to the influence that the green Guangzhou Amaranthus seed sprouts, but progressively increases with enlargement of lead density to the suppression degree of green Guangzhou Amaranthus seedling.
针对国内PVC树脂产业现状,详细介绍了几类具有良好发展前景的功能化及工程化PVC树脂的性能,进一步讨论了这些产品的生产、应用与市场前景。的翻译是:
阐述了PSA氨冷系统流程与制冷过程,分析了影响制冷效果的因素,并由此提出实际运行中的注意要点;针对蒸发式冷凝器在氨冷系统中的作用,叙述了蒸发式冷凝器改造过程,提出了解决风机振动的办法。的翻译是:Elaborated PSA ammonia cold system flow and refrigeration process, has analyzed the influence refrigeration effect factor, and proposed attention main point in th In view of function of the evaporative type condenser in ammonia cold system, narrated the evaporative type condenser to transform the process, proposed the means of solution fan vibration.
参考健康医学的观点,对舒适度的类型展开了分析,以人机工程学原理为启示,分析了包装容器造型设计的人机因素,探讨了基于人机尺度下包装容器造型的舒适性设计规律。在此基础上,提出了在包装造型设计中把握人体尺寸、生理需求、心理需求、使用行为的尺度,才能使容器在使用过程中获得生理和心理的舒适,从而为消费者营造理想的生活方式。的翻译是:The viewpoint of reference healthy medicine, has launched the analysis to the type of comfort level, takes the ergonomics principle as the enlightenment, has analyzed the man-machine factor of packing container appearance modeling, has discussed the man-machine criterion-based under the amenity design rule of packing container modeling. On this basis, proposed grasps the criterion of the human body dimension, the physiological drive, the psychological demand and use behavior in the packing appearance modeling, can make the vessel obtain the comfort of physiological and psychology during use, thus builds the ideal life style for the consumer.
目的:研究黑果枸杞Lycium ruthenicum Murr.果实的化学成分。方法:采用大孔树脂层析、Sephadex LH-20和高效液相色谱法对其化学成分进行分离纯化,通过理化性质和波谱数据分析鉴定化合物结构。结果:从黑果枸杞果实中分离得到9个化合物,分别为:N-mono-cinnamoyl-putrescine(1)、petunidin-3-trans-p-coumaroylrutinoside-5-glucoside(2),4-(p-cumaroyl)-methyl-L-rhamnoside(3)、p-香豆酸(4)、阿魏酸(5)、芦丁(6)、槲皮素(7)、原儿茶酸(8)、锦葵花素(9)。结论:化合物1～9均为首次从该植物中分离得到。的翻译是:
根据台站的实际工作经验,总结出草温传感器的正确、合理的安装方法,指出了如何进行日常维护才能有效避免异常数据的出现以及草温传感器故障、信号故障的处理方法等。的翻译是:
介绍了使用光固化成型件作为母模进行电弧喷涂快速制模的关键工艺,包括光固化成型件制作、母模制备、金属型壳制备、背衬制作、脱模以及后处理等。工艺具有母模制备灵活、制模工艺路线短、易脱模和金属型壳表面质量高等优点。根据工艺路线,制备了1副用于注射成型的Zn-Al合金快速模具,验证了该工艺在实际工程中的应用。的翻译是:Introduced use stereolithography takes the female mold to carry on the electric arc spraying DRMT the key processing, prepares, the metal shell preparation, the back lining manufacture, drawing of patterns as well as the post-processing including the stereolithography manufacture and Mu Mo. The craft has Mu Mo to prepare flexible, the pattern making operation sequence short and easy drawing of patterns and metal shell surface quality high and other merits. According to the operation sequence, has prepared Zn-Al alloy digital technology of 1 for injection molding, has confirmed application of this craft in actual engineering.
目的:观察中药制剂复方仙草颗粒对IgA肾病防治效果及可能作用机制。方法:采用切除一侧肾脏,反复尾静脉注射较大剂量葡萄球菌肠毒素B(SEB)的方法,制作IgA肾病大鼠实模型。随机分为模型组、福辛普利组[蒙诺冲剂液,含药0.33 g/mL,10 mL/(kg.d)]、复方仙草颗粒(由八仙草、三七、薏苡仁、制大黄、黄芪、甘草组成)小、中、大剂量组[复方仙草颗粒10、20、40 g/(kg.d)],另设正常对照组。疗程8周。检测大鼠24 h尿蛋白定量、尿红细胞计数;血清胱抑素C、血清肌酐;肾组织IgA(免疫荧光)、肾小球系膜细胞数及纤黏蛋白(FN,免疫化学法)表达。结果 (:1)复方仙草颗粒各组及福辛普利组24 h尿蛋白定量、尿红细胞排泄率均较模型组明显改善(P0.05);复方仙草颗粒中、大剂量组24 h尿蛋白定量与福辛普利组比较,差异无统计学意义(P>0.05)。(2)各药物干预组血清CystatinC与模型组比较,均明显改善(P0...的翻译是:
国务院下发的《关于开展国家教育体制改革试点的通知》,标志着国家教育体制改革试点工作的全面启动。在规划现代警察大学建设时,要结合国家中长期科技发展规划来构筑建设路径,提升学科发展核心竞争力,体现现代警察大学的创新能力,创新学术水平和科技水平。按照学院发展现状,积极寻找一条适合现代警察学习建设和发展的道路。的翻译是:The State Council issues &about Development Country Educational system reform Pilot Notice&, symbolizes the comprehensive start of national educational system reform pilot work. When the plan modern police university constructs, must construct the construction way in light of the national medium and long-term science and technical development planning, the promotion subject development core competitiveness, manifests the innovation capabilities of modern police university, innovates the academic standard and scientific and technological standard. According to the institute current development, seeks for one to suit the modern police to study the path that the construction and develops positively.
地特胰岛素作为新一代长效胰岛素类似物,以独特的分子结构,作用更接近生理性基础胰岛素分泌。大量的循证医学证据显示地特胰岛素对于糖尿病患者均能有效降低血糖,减少个体血糖变异,降低低血糖事件发生率,同时减少胰岛素注射所引起的体重增加,具有成本-效益优势。的翻译是:
项目地址法国项目面积2043m~2设计单位Y2DC这幢最近被重新设计的滑雪屋因其宽敞的空间、现代时尚的装饰和陈设以及它能带给人一切尽可能想象的舒适感而成为阿尔卑斯山的一大亮点。建筑共分为五层,位于阿尔卑斯山专用度假胜地的一个主要景点,其室内面积达2043平米,其中包括一个商用厨房、电影放映室、家庭健身室、的翻译是:Project address France project area 2043m~2 designing department Y2DC this recently as well as it can take to people because of its spacious the decoration and arrangement of spatial and modern fashion by the completely redesigned ski room all as far as possible imagination the comfort becomes a big highlight of Alps. The construction is divided into five, situated in a Alps special-purpose vacation resort main tourist attraction, its indoor area amounts to 2043 square meters, including a commercial kitchen and projection room and family fitness room,
为了提供较大的可调信息嵌入量和保持载密图像良好的视觉质量,提出一种基于模运算及其周期性特点的安全隐写算法。首先将秘密信息流转为n进制信息流表示,然后根据余数循环的特点,应用具有安全特性的模函数将一位n进制信息嵌入载体图像的一个像素中,直至信息嵌入完毕。选择不同的参数n可以得到不同的嵌入率和载密图像视觉质量。理论分析和实验结果表明,本文算法在保持高嵌入率的同时仍保持较好的载密图像视觉质量,且安全性好;其信息嵌入率选择具有高度弹性,可以根据实际要求选择在嵌入率和载密图像质量都很理想的隐写方案。与同类算法相比具有更强的实用性。的翻译是:
提出了一种氢化物发生—原子荧光光谱法测定地质样品(水系沉积物)中Sb(Ⅲ)和Sb(Ⅴ)的方法。选取4.8 mol/L HCl为提取剂,采用超声波辅助提取,以6 g/mL柠檬酸钠作为Sb(V)的掩蔽剂,在0.24 mol/L的HCl介质中选择性测定Sb(Ⅲ),用差减法求得Sb(Ⅴ)。Sb(Ⅲ)的方法检出限为0.075×10-6,Sb(Ⅴ)的方法检出限为0.097×10-6。对40 ng/mL的Sb(Ⅲ)和Sb(Ⅴ)分别连续测定11次,得到相对标准偏差分别为1.1%和0.64%。应用该方法对地质样品中的Sb(Ⅲ)和Sb(Ⅴ)进行分析测定,并与王水溶解值相比较,该方法测定的总Sb提取率在80%以上,Sb(Ⅲ)和Sb(Ⅴ)的加标回收率分别为83%～107%和98%～114%。的翻译是:Proposed a gaseous phase enrichment technique - atomic fluorescence spectrometry determination exploration geochemical sample (river system deposit) Sb (III) and Sb (V) method. Selects 4.8 mol/L HCl is the extractant, with the biodiesel extraction, takes 6 g/mL sodium citrate as the Sb(V) sequestering agent, the selectivity in 0.24 mol/L HCl medium determines Sb (III), obtains Sb with the bad subtraction (V). Sb (III) method detection limit is 0.075×10-6, Sb (V) method detection limit is 0.097×10-6. (III) and Sb (V) to 40 ng/mL Sb determines separately continuously 11 times, obtains the relative standard deviation respectively is 1.1% and 0.64%. In Sb (III) and Sb to exploration geochemical sample carries on the assay determination using this (V of) method, and compared with aqua regia dissolution value, total Sb extraction rate of this method determination over 80%, Sb (III) and Sb (V) the Canadian sign returns-ratio respectively is 83%~107% and 98%~114%.
通过对不可分辨水星偏振相位曲线的研究了解类水星不可分辨系外行星的偏振特性,为用偏振探测手段寻找类水星系外行星提供有力的依据.通过贝叶斯非线性拟合得到水星测光相位曲线和偏振相位曲线,进而得到不可分辨水星的偏振相位曲线.从该曲线中得出以下结果:(1)水星在不可分辨情况下在可见光波段其偏振度的量级为10~(-12);(2)垂直于散射平面和平行于散射平面的最大偏振度相当,且它们所对应的相位角相对于可分辨情况下发生了明显的改变;(3)在相位角大于158°时不可分辨水星的偏振度几乎为零.的翻译是:
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