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On the presentation of Mn-P fixation, this paper reviews the latest advances in recent 10 years and concentrates on the mechanism of phosphorus fixation in acid soils. In addition, it brakes through the classical inorganic P fractionation in to Fe-P, Al-P, O-P and Ca-Pin the traditional P classification and considers Mn-P as one of the main phosphorus fixation modes in latosols, cultivated from the parent basalt material. Furthermore, fixation of P by Fe, Al, Mn is compared, and differentiation from chemical availability and bioavailability of P discussed. Based on the above, this paper presents some alienable measures for enhancing P utilization efficiency and postulates pivotal future research directions in the field of P fixation.

本文以Mn-P的提出为出发点,论述了近10年来对酸性土壤固磷机理研究的新进展,突破了常规P素形态分级研究中分为Fe-P,Al-P,O-P和Ca-P等无机磷测定的经典分级,认为玄武岩母质砖红壤中的Mn-P是P素固定的主要形式之一,进而比较了Fe、Al、Mn对P固定作用,并从P的化学有效性与生物有效性差异等方面进行了比较全面的论述,提出了减少P素固定提高磷肥利用率的措施及今后的重点研究方向。

The object of projectile design is analyzed, and the layer-TOPSIS method is provided for the evaluation of total effectiveness by taking the layer concept into the TOPSIS method. In the calculation of object weights, the grade calculation method is suggested, which has less dependence on the subjectivity of decision-maker and can take account of both sensitivity and allowableness of objects, the geometric-arithmetic method is provided for grade weight calculation and methods for sensitive weight and allowable weight are given. Of modes in system analyzing, the penetration model of target with spherical-fragment is carried out based on the theory of Dynamic Spherical Cavity Expansion, and it is a supplement of the models for calculation the damage of the fragmentation warhead to target.

对弹丸设计进行了目标分析;通过在TOPSIS方法中引入层次结构的概念,提出了适用于弹丸总体效能评价的层次TOPSIS评价方法;在指标权重计算中,提出了对决策者主观依赖较少的能反映指标的敏感性和相容性的分级权重计算方法;在分级权重计算中,分别给出了等比-等差权值计算方法和敏感-相容权值计算方法;在系统分析的模型中,对破片战斗部的威力计算中的模型进行了补充,在空穴膨胀理论的基础上提出了球形破片侵彻有限厚靶板的侵彻计算模型。

The selection of geological prospecting in different stages(initial-prospecting, detailed-prospecting)(2)the selection of geological prospecting in the deep-laid and shallow-laid of tunnel project (3)the selection of geological prospecting of tunnel projecting in different geological conditions Finally, the author summed up main problems needing to be solved in tunnel engineering geological prospecting as follow:(1)differentiate stratum and find out the depth and thickness of different stratums in the tunnel section (2)find out geological structure and existence situation of fault, broken zone and weak plane (3)find out weathering level of bed rock to classify surrounding rock combining speed materials (4)differentiate stratum structure of the entrance of tunnel to judge the stability of it (5)find out existence situation and performance of ground water (6)situations of other harmful geological phenomenon In view of above problems and classification of surrounding rock, the author showed principles of rational choosing of methods in geological prospecting and counted disperse range of physical character parameter value in different petrosal character, getting achievements as follow:(1)summarization of effect, merits and demerits of different geological prospecting methods in the tunnel geological investigation (2)method selection and arrangement principle of tunnel engineering geological prospecting in different geological conditions and prospecting stages (3)According to previous experience and cases, the author concluded the物性parameters most in use ,and showed the basis of selecting geological prospecting methods in different geological conditions.

论文中用几个应用实例来说明:(1)不同勘察阶段物探工作的选用;(2)深埋、浅埋隧道工程物探工作的选用;(3)不同地质条件隧道工程物探工作的选用。最后总结归纳出隧道工程物探所需要解决的问题主要有:(1)划分地层,查明隧道通过剖面的各地层深度与厚度。(2)查明地质构造,隧道轴线段有无断层、破碎带、软弱层面等。(3)查明基岩风化程度,从而结合速度资料进行围岩分级。(4)划分洞口地层结构,判断洞口稳定性。(5)查明地下水赋存情况及其活动动态。(6)其他不良地质现象存在情况。针对上述需要查明的地质问题与计算围岩分级情况,论文提出合理选用物探方法的原则,并统计了物性参数值在不同岩性中的分布范围。得出以下研究成果:(1)总结出各物探方法在隧道地质调查中的作用和优缺点。(2)得出不同地质条件下和不同勘察阶段,隧道工程物探方法选择和布置的原则。(3)根据以往工作经验和事例,对常用的物性参数进行了归纳总结,同时介绍了不同地质条件下物探方法选择的依据。

It was found, several products with different molecular weight can be separated from a rough dextran and UF process was enhanced observably by an electric field. There is an optimal voltage corresponded to different concentrations. Based on mass balance, gradational UF can be used as a simple and effective method for biomacromolecular analysis.

实验结果表明,分级超滤法能从单一的粗品中分离出分子量范围不同的多个产品;外加电场对超滤过程有较明显的强化作用,不同浓度的料液存在其对应的最佳外加电压;基于质量衡算的分级超滤可以作为生物大分子物质的一种简便而且有效的分析手段。

Secondly, the paper is expanded from follow three aspects: the virtual design, the virtual process and the product data managementduring the developing the torque converter. Applying the key technique of concurrent engineering---design for function, design for assemblyand design for manufactureof the method of design for "X", the virtual design of the torque converter is accomplished in CATIA V5. Then the model constitution and the simulation of virtual process of the torque converter is done in CATIA V5, including the model constitution and the simulation of 5-aixe NC virtual process of the vane, the model constitution(material:PVC) of the idler pulley rapid prototypingand the virtual assembly and the motion simulation of the torque converter, etc. 3-D data exchange between various CAD systems is realized by using STEP standard. The lever of classing the character model of the torque converter is given. And the access authorization is set up and given to manage the partners' reading/writing the product data.

应用并行工程的关键技术之一——面向产品全生命周期的设计DFX中面向功能的设计DFF、面向装配的设计DFA和面向制造的设计DFM的方法,在CATIA V5中完成液力变矩器虚拟设计;在CATIA V5中对液力变矩器进行虚拟加工建模和仿真,包括液力变矩器导轮叶片五轴数控加工刀轨建模与仿真、导轮快速成型RP建模、液力变矩器虚拟装配和运动仿真等;采用STEP标准实现多CAD系统之间三维数据交换,提出液力变矩器特征模型的分级标准并对三维模型数据进行分级管理,制定相应的权限等级以规范合作厂家的产品数据管理层次。

The CPP was separated into five fractions using fractional precipitations by solvent/nonsolvent technique. Densities for binary mixtures of five fractionated and unfractionated CPP which contains a mass fraction of 30 % chlorine with solvents were determined. At a fixed temperature, concentration and solvent, the densities for binary mixtures of fractionated and unfractionated CPP with solvents have the same value.

用沉淀分级方法对氯含量为30%的氯化聚丙烯进行分级,得到5种窄分子量的级分,测定了氯化聚丙烯的不同级分与不同溶剂组成的二元混合物溶液的密度,在溶剂一定、浓度一定、温度一定时,不同级分氯化聚丙烯溶液的密度是相同的,不受分子量及其分布的影响。

First of all, the improving feeding helix can not only get material into the ball mill successfully, but also increase ventilated proportion; Secondly ,making use of all sorts of new scaleboards can reform the working condition of skive substance and raise the material adaptability; Third, separating storehouse board, have not only increased control material to flow, and balanced each storehouse smash the function of ability, but also realize thickness pellet grade role; Grind tail storehouse choose hyperboloid drum liner, in axial and circumference direction have incline curved surface, can not only increase steel ball lateral grade , but also still raise steel forge , steel ball grind efficiency.

进料口螺旋的改进,不仅解决了堵料现象,而且加大了通风面积;各种新型衬板的使用,对研磨体运动状态的调节以及对物料的适应性都有了较大的改善;隔仓板不仅增加了控制料流及平衡各仓粉碎能力的功能,而且可以实现粗细颗粒的分级作用;磨机尾仓选用双曲面衬板,在轴向和圆周方向均有倾斜曲面,不仅能够增加钢球的横向分级,还能提高钢锻、钢球的研磨效率。

And There was no serious complication;②In the course ofinterventional therapy, Direct portal vein angiography demonstrated vena coronaria ventriculi(100%)andgastricveins(65.26%)andvenagastricaposterior38.43%, Angiography demonstrated venacoronariaventriculi communicate esophagus varicose veins, gastric veins and vena gastrica posterior communicategastric varicose veins. vena coronaria ventriculi had only a small percentage of double vein, about30.57%. The sites of vena coronaria ventriculi arising from the portal vein, splenic vein, portosplenic junction, were found in 52.06%、27.39%、20.55% respectively.③12 extrahepaticprotosystemic shunts were found in these patients. Include gastro-nephrosshuntof 3 cases, 7 caseswere splenetic- nephros shunt and 2 cases shown recanalization of umbilical vein .④The averageportal pressure before and after the procedure were 3.87±1.82kPa and 3.64±1.14kPa in 73patients, but to the time of rebleeding, it was 3.96±0.23kPa in the 11 cases.⑤There werethree kinds of variceal outcome: disappearance (54,low degree (19).⑥Spearman logisticanalyse and ANOVAtest shown liver function class, variceal degree of the splenic necrosis area,the blood direction in portal vein before operation and remain small collateral routes were thesignificant factors concerning outcome of varices.⑦The bleeding volume and portalhypertensive gastropathy are main risk factors of rebleeding.⑧The course of livercirrhosis is the risk factor of survival and extrahepatic portosystemic shunt , fine varices are thebeneficial factors to survival.⑨During all cases'followed-up data, the 1, 2, 3, 4, 5 yearcumulative survival rates and rebleeding rates were 17.81%, 28.77%, 38.36%, 43.84%, 47.95%and93.15%,91.78%,86.30%,83.56%,80.82%respectively. Conclusion The interventional disconnection treatment for liver cirrhosis and portalhypertension was designed suitability. It rapidlycontrol bleeding,butpressure of portal vein was notobvious high, perfusion was not low .it was compared with surgery therapeutic that interventionaldisconnection treatment was safe and had a significant clinical effect to hemorrhage and preventfrom rebleeding.

结果:①术后一过性发热62例(84.9%),腹痛腹胀48例(65.8%)是介入断流术常见的并发症,未发生严重并发症;②门静脉造影显示胃冠状静脉、胃短静脉和胃后静脉的曲张分流的出现率是100%、65.26%和38.34%;显示食管静脉曲张主要由胃冠状静脉供血,胃静脉曲张主要由胃短静脉和胃后静脉供血;胃冠状静脉大多数为单支,少数为双支,其双支的出现率分别为30.57%;胃冠状静脉开口于门静脉主干的为52.06%,开口于脾静脉主干的为27.39%和开口于门脾静脉交汇处的为20.55%;③发现胃肾分流3例,脾肾分流7例、腹膜后门腔静脉分流2例,以及CTA检查发现脐静脉开放者2例;④73例患者介入断流术前和术后平均自由门静脉压力分别为3.87±1.82kpa和3.64±1.14kpa,前后比较存在显著性差异;11例再次介入手术患者的术前、术后和复发后的自由门静脉压力分别为4.02±0.24kpa、3.82±0.25kpa和3.93±0.23kpa ,前后比较发现首次术前与术后存在显著性差异,首次术前和复发出血术前门静脉压力比较无显著性差异;⑤介入术后复查曲张静脉转归基本消失54例,轻度19例;⑥Spearman相关分析和Logistic多因素回归分析,肝功能分级、静脉曲张程度、门脉血流方向和残存小侧支四个因素对曲张静脉转归有影响;Spearman相关分析和Logistic多因素回归分析门脉高压性胃病和出血量等因素对复发出血时间有影响;⑦COX回归分析,门体分流和曲张静脉转归两个因素对术后生存有影响;⑧术后随访6-70月,1、2、3、4、5年的累计复发出血率和累计生存率分别为17.81%、28.77%、38.36%、43.84%、47.95%和93.15%、91.78%、86.30%、83.56%、80.82%;结论:介入断流术治疗门脉高压食管胃底静脉曲张有独特的优点,可以快速直接控制曲张静脉出血而门静脉压力无显著增高,保证了肝脏灌注;与外科分流术相比适应证广、损伤轻、术后恢复快,不易遗漏曲张静脉;肝功能分级、曲张静脉程度、门脉血流方向和残存侧支血管对食管胃曲张静脉转归有影响;门脉高压性胃病对复发出血时间有影响;门体分流和曲张静脉转归对生存时间有影响。

Combined with the idea of \\\"grading district\\\" in Managing the Information of Exurb Safety and \\\"liability tied\\\" and taking into account of factors affecting exurb road safety, this paper analyzes in depth the basic functions and system design of safety management information system for Exurb Road. The system gets the functions such as management with different levels of exurb safety information, safety analysis, safety forecast and safety assessment. Furthermore, the system defines the responsibilities and duties related to the managers of exurb road safety and establishes an incentive mechanism for their assessment.

笔者在综合考虑影响远郊区县交通安全因素的基础上,结合远郊区县交通安全信息&分级分区&和&责任捆绑&的思想,对远郊区县交通安全管理信息系统的基本功能、系统设计等进行了深入分析,实现了远郊区县安全基本信息的分级处理、对事故或隐患的安全分析、安全预测、安全评价功能以及界定了安全责任人的相关职责并建立了对其进行考核激励的机制。

Statistical data of VEGF grading scores showed that its expression was not significantly related to the size and location of glioma, sex, and age of patients, but closely related to the glioma gradings. The expression of TF was positively correlated with that of VEGF, suggesting that TF might participate in the anigogenesis of gliomas, and provide proper environment for the growth of gliomas through its coagulant effect.

根据VEGF分级计数统计学分析,显示VEGF表达与肿瘤的大小、部位及患者性别、发病年龄等临床因素无显著相关性,而与肿瘤的组织学分级密切相关。3、胶质细胞瘤中TF与VEGF的表达正相关,TF可能参与了肿瘤血管的生成过程,并通过其促凝血活性作用为胶质瘤的生长创造适宜的内环境。

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推荐网络例句

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特,那个是爱朗。

Articulate the aims, objectives and key aspects of a strategic business plan.

明确的宗旨,目标和重点战略业务计划。