摘要,关键字翻译
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摘要:从天然食用紫卷心菜中以水作溶剂提取紫红色素,分别用微波和超声波作辅助并对提取温度、时间及次数等工艺条件进了研究。实验结果表明,微波辅助之以水作溶剂提取天然食用紫卷心... 摘要:从天然食用紫卷心菜中以水作溶剂提取紫红色素,分别用微波和超声波作辅助并对提取温度、时间及次数等工艺条件进了研究。实验结果表明,微波辅助之以水作溶剂提取天然食用紫卷心菜中紫红色素效果Z好,Z佳提取条件为:微波火力为80,辐射时间180秒。 关键字:紫卷心菜;红色素;提取;微波;超声波。 展开
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- 较劲脑汁想 2009-05-16 00:00:00
- 紫卷心菜:Purple cabbage 红色素:Red dye 提取: extract 微波:microwave 超声波:ultra-sonic wave
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- zitianya12 2009-05-16 00:00:00
- Abstract: Purple cabbage from the natural food in water for solvent extraction Su-purple, respectively, for the use of microwave and ultrasound-assisted extraction and temperature, time and frequency of research into the process conditions. The experimental results show that the microwave-assisted solvent extraction of water for human consumption of natural purple purple cabbage in the Su-best, the best extraction conditions were as follows: microwave power of 80, irradiation time 180 seconds.
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- 摘要,关键字翻译
- 摘要:从天然食用紫卷心菜中以水作溶剂提取紫红色素,分别用微波和超声波作辅助并对提取温度、时间及次数等工艺条件进了研究。实验结果表明,微波辅助之以水作溶剂提取天然食用紫卷心... 摘要:从天然食用紫卷心菜中以水作溶剂提取紫红色素,分别用微波和超声波作辅助并对提取温度、时间及次数等工艺条件进了研究。实验结果表明,微波辅助之以水作溶剂提取天然食用紫卷心菜中紫红色素效果Z好,Z佳提取条件为:微波火力为80,辐射时间180秒。 关键字:紫卷心菜;红色素;提取;微波;超声波。 展开
- 【生物专业英语】摘要翻译
- Abstract:Heavymetals,suchascadmium,copper,lead,chromiumandmercury,areimportantenvironmentalpollutants,particularlyinareaswithhighanthropogenicpressure.Theirpresenceinthea... Abstract: Heavy metals, such as cadmium, copper, lead, chromium and mercury, are important environmental pollutants, particularly in areas with high anthropogenic pressure. Their presence in the atmosphere, soil and water, even in traces can cause serious problems to all organisms, and heavy metal bioaccumulation in the food chain especially can be highly dangerous to human health. Heavy metals enter the human body mainly through two routes namely: inhalation and ingestion, ingestion being the main route of exposure to these elements in human population. Heavy metals intake by human populations through food chain has been reported in many countries. Soil threshold for heavy metal toxicity is an important factor affecting soil environmental capacity of heavy metal and determines heavy metal cumulative loading limits. For soil-plant system, heavy metal toxicity threshold is the highest permissible content in the soil (total or bioavailable concentration) that does not pose any phytotoxic effects or heavy metals in the edible parts of the crops does not exceed food hygiene standards. Factors affecting the thresholds of dietary toxicity of heavy metal in soil-crop system include: soil type which includes soil pH, organic matter content, clay mineral and other soil chemical and biochemical properties; and crop species or cultivars regulated by genetic basis for heavy metal transport and accumulation in plants. In addition, the interactions of soil-plant root-microbes play important roles in regulating heavy metal movement from soil to the edible parts of crops. Agronomic practices such as fertilizer and water managements as well as crop rotation system can affect bioavailability and crop accumulation of heavy metals, thus influencing the thresholds for assessing dietary toxicity of heavy metals in the food chain. This paper reviews the phytotoxic effects and bioaccumulation of heavy metals in vegetables and food crops and assesses soil heavy metal thresholds for potential dietary toxicity. 用翻译软件的免回,哥也有,真诚求助高手! 展开
- 帮忙翻译论文摘要
- 换热器是化工、炼油、动力、食品、轻工等许多工业部门广泛应用的一种通用设备。其性能的好坏直接影响过程工业热经济性的高低。近年来,由于能源危机,强化传热技术和新型换热器的研究... 换热器是化工、炼油、动力、食品、轻工等许多工业部门广泛应用的一种通用设备。其性能的好坏直接影响过程工业热经济性的高低。近年来,由于能源危机,强化传热技术和新型换热器的研究得了飞速发展。本次的实验是在前人设计的带螺旋折流片(下简称螺旋片)换热器的基础上再在内圆管多加上扰流柱,分析不同操作参数和结构参数条件下流体传热情况,由此得出影响换热器传热性能的条件,为进一步研究静态混合器传热情况和其在实际工程及设计中的应用奠定基础。 本文对换热器进行了研究,测得壳程空气进出口温度,利用温差传热,以努塞尔准数作为衡量换热器传热性能的标准,分别考察了雷诺数对努塞尔准数的影响,并与空管进行了比较。换热器器中由于扰流柱的作用,使进入管中的流体在流经扰流柱时产生旋涡,有效地消除了径向主流道的速度梯度和温度梯度。因传热边界层大大减薄,使得边界层内流体不断得到更新,热阻下降,传热过程得到强化。 通过实验可以得出一些结论: 由于有螺旋片同扰流柱的存在使得扰动螺旋型换热器的传热效果明显要优于圆滑管型换热器同螺旋型换热器;螺旋片使流体具有向外甩开的离心力,流体在流过扰流柱时因被分流、切割、再生,不仅加速了流速并且在柱后形成涡流,加速壁面流体的更新,减薄粘性边界层底层的厚度,从而提高了传热性能; 同一模型在不同Re下,随着Re的增加,Nu也随着增加,在不计阻力时,模型的传热效果随着Re的增加而提高 不要在线翻译的。希望帮一忙! 如果好再加100分,我现在非常急,马上就要交了。 展开
- 帮忙翻译论文摘要
- 换热器是化工、炼油、动力、食品、轻工等许多工业部门广泛应用的一种通用设备。其性能的好坏直接影响过程工业热经济性的高低。近年来,由于能源危机,强化传热技术和新型换热器的研究... 换热器是化工、炼油、动力、食品、轻工等许多工业部门广泛应用的一种通用设备。其性能的好坏直接影响过程工业热经济性的高低。近年来,由于能源危机,强化传热技术和新型换热器的研究得了飞速发展。本次的实验是在前人设计的带螺旋折流片(下简称螺旋片)换热器的基础上再在内圆管多加上扰流柱,分析不同操作参数和结构参数条件下流体传热情况,由此得出影响换热器传热性能的条件,为进一步研究静态混合器传热情况和其在实际工程及设计中的应用奠定基础。 本文对换热器进行了研究,测得壳程空气进出口温度,利用温差传热,以努塞尔准数作为衡量换热器传热性能的标准,分别考察了雷诺数对努塞尔准数的影响,并与空管进行了比较。换热器器中由于扰流柱的作用,使进入管中的流体在流经扰流柱时产生旋涡,有效地消除了径向主流道的速度梯度和温度梯度。因传热边界层大大减薄,使得边界层内流体不断得到更新,热阻下降,传热过程得到强化。 通过实验可以得出一些结论: 由于有螺旋片同扰流柱的存在使得扰动螺旋型换热器的传热效果明显要优于圆滑管型换热器同螺旋型换热器;螺旋片使流体具有向外甩开的离心力,流体在流过扰流柱时因被分流、切割、再生,不仅加速了流速并且在柱后形成涡流,加速壁面流体的更新,减薄粘性边界层底层的厚度,从而提高了传热性能; 同一模型在不同Re下,随着Re的增加,Nu也随着增加,在不计阻力时,模型的传热效果随着Re的增加而提高 不要翻译软件翻译的。如果好再加分 展开
- 翻译纳米材料摘要(2)
- Moreover, the particle size of incorporated ZnO calculated from the effective mass model was close to the results obtained from HRTEM. The synthesis method developed in course of this work can be used for the fabrication of different polym... Moreover, the particle size of incorporated ZnO calculated from the effective mass model was close to the results obtained from HRTEM. The synthesis method developed in course of this work can be used for the fabrication of different polymer-inorganic transparent nanocomposites with other functionalities. In the second part of the thesis, we studied a method for the fabrication of micro-porous surface layer – made of copper nanoparticles – on the surface of copper plates (suitable for heat exchangers). The micro-porous surfaces were formed from dendritic network of copper nanoparticles obtained by electrodeposition from solution using dynamic bubble formation and removal as template. The surface layer engineered and its structures were optimized in order to enhance the boiling heat transfer coefficient. To further optimize the dendritic structure, additional annealing step was introduce and its effect on the surface layer structure and properties were investigated. The properties of the deposited surface structures were investigated and its effect on the enhancement of the heart transfer coefficient has been studied. The fabricated enhanced surface has shown an excellent performance in nucleate boiling. Pool boiling tests were performed on refrigerant fluids (R134a) to evaluate the boiling performance of the electrodeposited nanostructured micro-porous structures. At heat flux of 1 W/cm2, the heat transfer coefficient is enhanced over 15 times compared to a plain reference surface. A model has been presented to explain the enhancement based on the structure characteristics. 展开
- 纳米材料的摘要翻译(7)
- Drivers and Directions In the United States, the EPA and NIOSH are spearheading research into nanoparticles and their associated health risks through a variety of funded research projects and information exchange programs. NIOSH’s Web si... Drivers and Directions In the United States, the EPA and NIOSH are spearheading research into nanoparticles and their associated health risks through a variety of funded research projects and information exchange programs. NIOSH’s Web site also cites its participation in the multiagency National Nanotechnology Initiative and the Nanoscale Science, Engineering and Technology Subcommittee of the National Science and Technology Council’s Committee on Technology. But on the whole, the study of nanotechnology in the workplace is still in its infancy. Or as Keith Rickabaugh, technical director of materials and analytical services for RJ Lee Group, Monroeville, Pa., puts it, “what has been learned is that there is much more to learn.” Rickabaugh goes on to say that, “We need to learn how to economically/reasonably establish safe work practices and engineering controls to protect workers from an ‘unknown’ exposure risk. That includes performing studies to document the health risks of nanosized particles, and training workers to understand and be able to characterize those materials.” 展开
- 翻译一段纳米材料的摘要(1)
- Abstract Nanomaterials and nanotechnology have been hot issues during the recent decades. This thesis deals with the fabrication and engineering of novel nanomaterials with enhanced functionality, particularly nanocomposites and nanostruc... Abstract Nanomaterials and nanotechnology have been hot issues during the recent decades. This thesis deals with the fabrication and engineering of novel nanomaterials with enhanced functionality, particularly nanocomposites and nanostructured surfaces. The study includes two parts; in the first part, bulk transparent polymer-inorganic nanocomposites were produced by a novel synthesis method and its UV-absorption has been investigated. In the second part, nanostructured microporous surface layers, of copper, were fabricated by electrodeposition process and its effect on material’s performance for pool boiling has been investigated evaluated.In the first part of the thesis, bulk polymer-inorganic nanocomposites composed of poly(methylmethacrylate) (PMMA) and zinc compounds were prepared by an in situ sol-gel transition polymerization of zinc complex in PMMA matrix. The immiscibility of heterophases of solid organic and inorganic constituents was resolved by the in situ sol-gel transition polymerization of ZnO nanofillers within PMMA in the presence of dual functional agent, monoethanolamine, which provided strong secondary interfacial interactions for both complexing and crosslinking of constituents. Comprehensive characterization of the polymer-inorganic hybrid materials has been undertaken using a wide range of techniques; XRD, 1H NMR, FT-IR, TGA, DSC, UV-Vis, ED, SEM, TEM and HRTEM. The homogeneous PMMA-ZnO nanocomposites exhibited enhanced UV-sheltering effects in the entire UV range even at very low ZnO content of 0.02 wt%. 展开
- 急求英文高手翻译一段摘要 有关夹具设计的
- Abstract In this paper, the general situation of research on agile fixture design is summarized and the achievements and deficiencies in the field of case-based fixture design are pointed out. There are no correlative case bases and match... Abstract In this paper, the general situation of research on agile fixture design is summarized and the achievements and deficiencies in the field of case-based fixture design are pointed out. There are no correlative case bases and matching mechanisms during the period from establishing the fixture planning to designing the fixture in currently used case-based fixture design systems. Thus a great amount of experience of fixture design is wasted and cannot be re-used, which reduces design efficiency and violates the original intention of case-based reasoning methods. In order to realize agility of fixture design, including re-configurability, re-scalability and re-usability, in this paper, a re-configurable agile fixture element base and an element assembly relation base are established. Using these two bases, the fixture structure is function-based decomposed, which makes it easy for an agile fixture to be re-configured and modified. Furthermore, a whole case-based agile fixture design model is presented, in which three modules are introduced, including the evaluation of the similarity of fixture planning, conflict arbitration and the modification of an agile fixture case. The three modules can be used to solve a problem where experience and design results cannot be re-used in the process of fixture design. Against the agile fixture design model, the evaluation method is put forward to evaluate the similarity in various phases. However, a similar case in the base could not generally meet the actual requirement and resolve the conflict between the similar case and the actual condition. Thus three methods, including a local restriction-relaxed method, a function-based conflict arbitration method and a case-based conflict arbitration method, are presented to clear up the conflict and could be used to modify the case to obtain an approach to a design result. Finally, an agile fixture design example is presented. The result demonstrates that the case-based agile fixture design approach can improve re-usability and design efficiency. Keywords: Agile fixture design; Case-based reasoning; Modeling 展开
- 急 帮我翻译下这个摘要 有写好的 帮忙修改下
- 摘要:实验测定和比较了九顶山鸡不同品系鸡肉中微量元素的含量的差异。以及同种品系胸肌和腿肌中微量元素的差异。分析不同品系和同种品系之间微量元素的差异。根据生长性能、鸡的血缘... 摘要:实验测定和比较了九顶山鸡不同品系鸡肉中微量元素的含量的差异。以及同种品系胸肌和腿肌中微量元素的差异。分析不同品系和同种品系之间微量元素的差异。根据生长性能、鸡的血缘、生产性能等把九顶山鸡分为九顶山鸡Ⅰ号,九顶山鸡Ⅱ号,九顶山鸡Ⅲ号。以九顶山鸡腿部肌和胸肌为实验材料采用微波消解及等离子发射光谱仪(ICP)测定其cd、co微量元素的含量,并进行对比。其结果表明 Abstract: This study is to compare trace elements Jiudingshan chicken (Gus Gallus) and the differences between other species. in same strains Breast and leg muscles difference between the trace element. According to the growth performance, chicken's blood, production performance, etc. Species can be divided into types I and ll and lll Jiudingshan chicken (Gus Gallus). Experimental material as the legs and chest, using microwave plasma atomic emission spectrometry (ICP) of the trace elements measured and compared. The results showed that: 展开
- 金蝶财务软件怎么复制摘要
- 接地工程论文英文摘要
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- ABAQUS关键字编辑器可以输入三阶弹性模量吗
- 翻译翻译,请高手帮我翻译一下这个说明
- Followthesysteminstallationinstructionscarefullyandinthespecifiedorder.ThesoftwaremustbeinstalledonthecomputerbeforeconnectingtheUSBcable.2.1FacilitiesRequirementsFacilit... Follow the system installation instructions carefully and in the specified order. The software must be installed on the computer before connecting the USB cable. 2.1 Facilities Requirements Facilities requirements for the alpha-SE system are listed in Table 2-1 and the system dimensions are given in Fig. 2-1. As shown in Fig. 2-2, the alpha-SE tool requires a clear work area of 20 by 18 inches (500 by 460 mm), excluding the operator computer. 2.2 Unpacking the Hardware Opening the Shipping Container Move the alpha-SE shipping container to the area where the tool will be installed. Open the container and remove the top and side pieces of packing foam. Carefully remove all smaller components from the shipping container, verifying that you received all components, as shown in Fig. 2-3. Finally, remove the alpha-SE ellipsometer and position it on your clear 20” by 18” (510 by 460 mm) workspace. Caution: The alpha-SE ellipsometer without sample chuck weighs approximately 37 lbs. (16 kg.). Please find an assistant to lift the alpha-SE unit out of the shipping carton and on to clear work surface. 展开
- 如何时修改项目管理软件摘要日期
- 电工电子产品环境试验恒定湿热试验标准摘要
GB/T 2423.3-2006 《电工电子产品环境试验 第2部分 试验方法 试验Cab 恒定湿热试验》
恒温恒湿试验箱试验的严酷等级有试验持续时间、温度、相对湿度试验共同决定。除非相关规范规定,试验的温度、相对湿度应从下面的组合中选择:
1、温度:30±2℃ 相对湿度:93±3%RH
2、温度:30±2℃ 相对湿度:85±3%RH
3、温度:40±2℃ 相对湿度:93±3%RH
4、温度:40±2℃ 相对湿度:85±3%RH
5、推荐的持续时间为:12h、16h、24h、和2天、4天、10天、21天或56天。
考虑到测试时的绝之对误差、温度渐变以及工作空间内的温差,本部分规定的温度容差为±2K。为了维持恒温恒湿试验箱内的相对湿度在规定的容差范围内,必须保持恒温恒湿试验箱内的任意两点在任何时间内其温度差异尽可能的小。若温差超过1K,则不能达到所需的湿度条件。短期的温度波动也必须保持在±0.5K范围内以维持所要求的湿度条件。
- 生物化学翻译
- To show that HAX-1 degradation is part of the apoptotic process and any involvement Omi may have, we used the ucf-101 inhibitor. ucf-101 is a specific inhibitor of the proteolytic activity of Omi and has been described previously (13). When... To show that HAX-1 degradation is part of the apoptotic process and any involvement Omi may have, we used the ucf-101 inhibitor. ucf-101 is a specific inhibitor of the proteolytic activity of Omi and has been described previously (13). When HK-2 cells were treated with cisplatin in the presence of ucf-101, the percentage of apoptotic cells decreased and the inhibitor significantly blocked HAX-1 degradation. This effect was more pronounced when a higher concentration of the inhibitor was used. To confirm the specificity of the inhibitor in this system and exclude the possibility that another protease rather than Omi is involved in HAX-1 cleavage, we used cell lines derived from mnd2 mice (9). The parent cell line (mnd2-MSCV) derived from mouse embryo fibroblasts has no detectable Omi proteolytic activity (9). The same cell line has been transfected with wild type human Omi cDNA (mnd2-MSCV-Omi) and expresses high levels of active Omi protein (14). We found that in mnd2-MSCV cells, when induced to undergo apoptosis with various stimuli, the number of apoptotic cells was very low. Furthermore, no detectable cleavage of HAX-1 was observed. This is in contrast with the mnd2-MSCV-Omi cells where apoptosis was robust, and HAX-1 levels were inversely proportional to the degree of apoptosis. This experiment clearly shows that Omi is solely responsible for HAX-1 cleavage, which is essential for apoptosis under the conditions used in these experiments. HAX-1 subcellular localization depends on cell type (21, 30) and has been reported to be present in the mitochondria, cytoplasm, or plasma membrane (10, 21, 22, 30). We performed subcellular fractionation to investigate where HAX-1 cleavage by Omi takes place. We found that, in HEK293 cells, HAX-1 was predominantly present in the mitochondria, and this localization did not change in response to apoptotic stimuli. This suggests that Omi can initiate apoptosis in the mitochondria by cleaving HAX-1 protein. This is in accord with a recent study that shows Omi can induce apoptosis in human neutrophils treated with TNF- without being released from the mitochondria (7). Although several studies clearly define HAX-1 as an anti-apoptotic protein, the mechanism of its function is unknown. HAX-1 has sequence similarity to Bcl-2 family of proteins (10, 22). 展开
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