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Elissa Cameron at the University of Pretoria in South Africa and her colleagues wanted to study how changes in diet might influence sex ratios – the proportion of males to females in a population.
南非比勒陀利亚大学的艾莉莎卡梅隆是这项研究的负责人,她和同事就是想确认,饮食变化对胎儿性别到底有多大的影响。
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Increased demand in the community and the massive expansion of higher education under the dual function, both contradiction and the adaptation gap above the existing degree type, the talented person raise pattern and the society needed gradually revealed; degree structure in the rank and the type, distribution of degree conferred institutes and degree quantity proportion are all imbalance; the unit of degree awards too numerous disorderly and the degree awards the population to increasable day by day, the original verification principle and the means lack of operational in reference; the degree quality assurance and monitoring system is to be established.
在社会需求增加和高等教育大规模扩张的双重作用下,我国现有学位类型和人才培养模式与社会需求间的矛盾和适应缺口逐渐显露;学位结构在学位等级、学位类型、学位点布局和学位数量比例等方面存在不同程度的失衡;学位授予单位日益庞杂和学位授予人数日益增多,原有的审核原则和办法缺乏操作性和参照性;学位质量保障与监控体系也亟待建立。
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Pumping Systems—HPLC pumping systems deliver metered amounts of mobile phase from the solvent reservoirs to the column through high-pressure tubing and fittings. Modern systems consist of one or more computer-controlled metering pumps that can be programmed to vary the ratio of mobile phase components, as is required for gradient chromatography, or to mix isocratic mobile phases (i.e., mobile phases having a fixed ratio of solvents). However, the proportion of ingredients in premixed isocratic mobile phases can be more accurately controlled than in those delivered by most pumping systems. Operating pressures up to 5000 psi or higher, with delivery rates up to about 10 mL per minute are typical.
泵系统—HPLC 泵系统通过高压管路和设备将储液系统的流动相按设定的流量精确地输送通过柱子,最新的泵系统由一台或更多的计算机测量控制泵使得流动相组分能够按照程序变化改变比例,如有必要,可以进行梯度洗脱或混合均匀的流动相(i.e。,流动相可以是混合比例的溶液),然而,当操作压力达到或高于5000 psi,流速达到10ml/min的典型值时,预混合均匀的流动相各成分的比例就比泵控制的更精确。
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In the process of determining the quantization model of enterprise residual income allocation for human capital, this paper: first, takes the value devoted by human capital as the base point, determines the total amount of enterprise residual income allocation and introduces the economic value added index into this study; secondly, starting with the external factors (i.e. the value devoted by human capital and the negotiating power of human capital and material capital in the enterprise) that influence the proportion of human capital in enterprise residual income allocation, evaluates the negotiating power of human capital and material capital in the enterprise by using fuzzy synthetical evaluation method and puts forward the quantization method and application model for allocating the enterprise residual income between the owners of human capital and material capital; at last, determines the prorate of value devoted by individual human capital on the basis of their respective positions and calculates the amounts for individual human capital to allocate the enterprise residual income in combination with the performance examination for each department and individual human capital in the enterprise.
论文在确定人力资本参与企业剩余分配量化模型的过程中,首先以人力资本贡献价值为基点,明确企业剩余分配总量,引入经济增加值EVA指标;其次从影响人力资本参与企业剩余分配比例的外部因素—人力资本贡献价值和人力资本与物质资本在企业内的谈判力入手,用模糊综合评价法对人力资本和物质资本在企业内的谈判力进行评价,结合对人力资本的业绩考核,提出了企业剩余收益在人力资本所有者与物质资本所有者之间分配的量化方法和应用模型;最后用层次分析法确定个体人力资本的岗位贡献价值的权重,结合企业内对部门和个体人力资本的业绩考评,计算企业内每个个体人力资本分配企业剩余的数额。
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In the idea of math teacher's education specialty, I put forward the instructional thought like"adequate to theory","attach importance to practice","system innovation"and"literacy standard", improve the structure of curriculum on the curriculum system construction of math teacher's education specialty, promote the character of teacher specialization, enhance the integration of general course, protrude the literacy of teacher specialization, reduce math specialized course, promote the function of"Educational Academy", regrade two kind educational course, strengthen thought integration, construct course modality of"Subject Amalgamation", unfold the summary of course structure and proportion of math teacher's education specialty. In the integration of curriculum and teaching model, according to the different kind of curriculum nature and learning stage of teacher's education specialty, I think there are three leading type to teaching model and learning stage, that is, participating teaching and meaningful receptive learning, eliciting teaching method and research study, case based teaching and reflective learning, and put forward operability suggestions to teaching practice.
在数学教师教育专业理念上,提出了&理论够用&、&实践为重&&体系创新&和&素养本位&的指导思想;在数学教师教育专业课程体系构建上,提出优化课程结构,提升教师专业化品性;加强通识课程统整,突出教师专业化素养;精减数学学科专业课,并增进&教育学术性&功能;精选两类教育类课程,强化统整思想,并构建出&学科融合&式的课程样态,展现了数学教师教育专业课程结构、比例的概略性图谱;在课程与教学模式整合问题上,笔者提出了按照教师教育专业学生学习的课程属性和学习阶段不同,形成三个主导型教学模式与学习方式,即参与式教学与有意义接受学习、启发性教学和研究性学习、案例式教学与反思性学习,并对对教育实习提出具有操作性的建议。
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Tell you one of the most simple method: buy a pack of "soda" is about a dollar, with the proportion of 5 percent, which means 5 saleratus release, water release of 100 copies, with cotton dipped in wiping in the affected area, more than a few good clean, and very effective, my son the other day is a good clean, but I began to use such a ratio less effective, but then I have to put some strong, clean, the cotton have white lesion of the visco-down, after just a few, you may wish to try it!
告诉你一个最简单的方法:买一包&小苏打&大概是一元钱,用5%的比例,也就是说小苏打放5份,水放100份,用棉签蘸着抹在患处,多抹几次就好了,非常有效,我儿子前些天就是这样抹好的,但我开始用这样的比例不太见效,后来我放得浓一些,抹的时候,棉签都把患处的白的粘下来了,几次以后就好了,你不妨试一试!
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Through theoretical, comparative, demonstration study and so on and the analysis of the nature and characteristics of the credit system, The thesis has put forward the conception of the Three-credit system for vocational schools: On the basis of the credit system and according to its general principle the teaching management in vocational schools divides the original credit system into three types of credits: creditof theoretical knowledge, special techniques and integrated quality with each covering a certain proportion. Each type has its own corresponding time request and evaluation forms. In each type students are, to seme extent, allowed to do some choices on their own.
本论文运用了理论研究法、比较研究法和实证研究法等研究方法,从分析学分制的本质及特点入手,提出了三元学分制的概念:中等职业学校三元学分制是中等职业学校教学管理以学分制为基础,遵循学分制的一般原则,将原来单一的学分形式分解为理论知识学分、专业技能学分、综合素质学分三类学分,三类学分之间有一定比例,每类学分有一定的课时要求和相应的评价考核办式,学生在每类学分选修中有一定的自主权,在达到规定的学分总数后即可毕业。
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Shim current calculation When shim coils are excited by appropriate current, they can generate correcting magnetic field to compensate the imaging magnetic field unhomogeneity. Based on the indirect calculation method, we proposed a novel iterative optimization algorithm to calculate shim current. Because there is a direct proportion relationship between FID signal and magnetic field homogeneity, we use the intensity of FID signal as feedback information to the calculation. Shim current can be worked out in less than 3 minutes. This satisfied the requirement that active shimming should be performed in real time.
5匀场电流计算对匀场线圈施加适当的电流后才能产生校正磁场消除成像磁场的非均匀分量,本文在匀场电流间接计算方法的基础上,利用磁共振成像原理中磁场均匀性与系统FID信号强度成正比的关系提出了一种电流迭代优化算法,将系统FID信号强度的变化作为反馈信息,能够快速计算出匀场电流对成像磁场进行补偿校正,平均耗时不到三分钟,满足磁共振成像系统对有源匀场的实时性要求。
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Shim current calculationWhen shim coils are excited by appropriate current, they can generate correcting magnetic field to compensate the imaging magnetic field unhomogeneity. Based on the indirect calculation method, we proposed a novel iterative optimization algorithm to calculate shim current. Because there is a direct proportion relationship between FID signal and magnetic field homogeneity, we use the intensity of FID signal as feedback information to the calculation. Shim current can be worked out in less than 3 minutes. This satisfied the requirement that active shimming should be performed in real time.
5匀场电流计算对匀场线圈施加适当的电流后才能产生校正磁场消除成像磁场的非均匀分量,本文在匀场电流间接计算方法的基础上,利用磁共振成像原理中磁场均匀性与系统FID信号强度成正比的关系提出了一种电流迭代优化算法,将系统FID信号强度的变化作为反馈信息,能够快速计算出匀场电流对成像磁场进行补偿校正,平均耗时不到三分钟,满足磁共振成像系统对有源匀场的实时性要求。
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By regression of experimental data, therules of the linkage between these factors, which will provide a theoretical basis for designing BBP with different scales.3 Using thermal analysis technology and dynamic thermogravimetry, the paper studies combustion kinetic characteristics of 3 types of agricultural crops at different rate of temperature rise, and thus, achieved dynamic parameters of these fuels at different rate of temperature, established dynamic model of straw combustion, which reflects the dynamic process in the fast combustion area.4 Characteristics of straw briquette combustion was experimented, focusing on the impact of straw type, temperature, air supply, and density, diameter, and weight of briquette on the combustion speed, and the following conclusions were drawn:(1) combustion of straw briquette fuel is static permeation diffusion combustion;(2) temperature has a larger impact on the speed of straw briquette combustion than air supply; the higher the combustion temperature is, the faster volatilizable component separates out, and the less steady the combustion is;(3) density of briquette fuel has impact on the speed of volatilizable component separation and therefore the combustion speed;(4) increase of diameter and weight of briquette fuel increases the average combustion speed in the initial stage, and that in the later stages is comparatively steady;(5) the proportion of volatilizable component in straw briquette fuel is high, therefore, the temperature control during combustion under the rational ventilation condition is essential to ensure its safe combustion.5 Using the above-mentioned results of experiments and theoretical analysis, and based on thought of hydraulic driven and bi-direction compression, the hydraulic system and compression parts of the HBP BBP are re-designed in terms of industrialization.
利用热分析技术,采用动态热重实验法,对我国的三大农作物秸秆在不同升温速率下的燃烧动力学特性进行了较系统的研究。得到了各原料在不同升温速率下的动力学参数;建立了秸秆燃烧的动力学模型,该模型反映了秸秆迅速燃烧区的动力学过程。 4 对秸秆成型燃料的燃烧特性进行了试验研究。着重研究了秸秆河南农业大学博士学位论文巫的种类、温度、空气供给量、成型燃料密度、直径、质量对成型燃料燃烧速度的影响并得出如下主要结论:①秸秆成型燃料的燃烧方式属于静态渗透式扩散燃烧。②秸秆成型燃料燃烧速度受温度的影响大于通风量燃烧速度的影响:燃烧温度越高,挥发分析出速度越快,燃烧平稳性愈差。③成型燃料密度影响成型燃料挥发分的析出速度,影响燃烧速度。④成型燃料直径和质量的增加,使得燃烧初期的平均燃烧速度增大,中后期的平均燃烧速度相对平稳。⑤秸秆成型燃料含挥发分比例高,因此合理配风下的控温燃烧是保证其完全燃烧的关键。 5运用已取得的试验和理论分析结果,以液压驱动、双向成型为基础,从产业化的角度对HBP型成型机进行了液压系统和成型部件的改进设计;同时采用了二级预压机构,使该成型机的生产率达到 500kg.hd;单位能耗 60kwh。上'左右,磨损件修复周期 300小时左右,基本解决了影响生物质固化技术在国内推广的技术难题。
- 推荐网络例句
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The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.
此刻阴唇已经几乎完全的缝在一起了,排除多余淤血体液的管子和Foley导管从顶端冒出来。
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To get the business done, I suggest we split the difference in price.
为了做成这笔生意,我建议我们在价格上大家各让一半。
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After an hour and no pup, look for continued contractions and arching of the back with no pup as a sign of trouble.
一个小时后,并没有任何的PUP ,寻找继续收缩和拱的背面没有任何的PUP作为一个注册的麻烦。