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渗透作用

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In this paper,Laterite soil adjacent to some stake of the highway in Chenzhou, Hunan section from Xiamen to Chengdu was used to investigate the deformation characteristics and protection methods of the Laterite soil subgrade under the influence of environment factors.Properties like water-holding capacity,capillary rise, coupled heat-moisture transfer and wetting deformation of samples under different compactness were studied through a series of laboratory tests.In addition,by using meteorological data of two consecutive years in Chenzhou,coupled process of moisture transfer and subgrade deformation was stimulated under the impacts of groundwater and the atmosphere.Specific work done in this paper is as follows:(1) Samples under different compactness were subjected to a series of conventional laboratory tests,such as permeability,consolidation,contraction,shear test and etc.

论文以厦门至成都高速公路湖南郴州段的红粘土为研究对象,以环境因素作用下红粘土路基的变形特征与防护方法为研究目的,通过室内试验研究了不同压实度红粘土的持水性能、毛细上升、湿热耦合迁移及湿化变形等特征,借助郴州地区连续两年的气象数据,模拟在地下水和大气的共同作用下路基内部红粘土水分迁移与路基变形的耦合过程,主要研究内容及结论如下:(1)针对不同压实度的红粘土,系统开展了其渗透、固结、收缩、剪切等试验研究。

It has been found that the enveloping line of the average methane content to coal rank develops in the coalification stages, that the remarkable developments of the maximum average methane content coincide gr...

指出不同煤化作用阶段控气作用的实质在于煤物理结构和化学结构的演化,沉积作用控气的思路对煤储层渗透率非均质性预测具有一定实践意义。

In this chapter, I point out the location of Lijiang Region and Dayan in the first place, and then analyze the natural environment of Dayan from different angles including physiognomy, climate, biologic resources and tour resources. After it, I study the cultural and social environment of Dayan by the introduction of the ethnologic structure, faith, traditional culture, regime, and folk-custom in this area, which set a background to the following discussion.

本章首先指出大研古镇的外在形态是隐藏其后的政治、经济、宗教、文化等各种因素共同作用的结果,接着分析了大研古镇的历史沿革,即不同历史时期中对古镇发展起决定性作用的主要力量及其所导致的古镇面貌的主要改变,以及大研古镇的人文内涵及其演变,即古镇受不同类型文化渗透、影响而具备的特征属性。

In order to overcome the difficulty of making a through investigation of each fracture in natural systems, a new concept of quasi double-porosity-medium was put forword and a new mcdel was also developed based on the partition of dominant fractured networks and quasi porous matrixes according to the transmissive and storage mechanism of frae tured medium.

双重介质水流耦合离散模型的建立,改变了以往对双重介质的概化和假设,能如实的反映裂隙系统和孔隙岩块的组合关系,不仅能描述裂隙系统的导水作用和孔隙岩块的贮水作用,还能描述孔隙岩块的渗透特征。对两类空隙系统间的水交替特点有了新的认识,并对以往的结论提出异议。

This showed that capacity of water-holding in biological soil crusts were obvious improve,and effected precipitation permeate or water second distribute process.The study results of"fertile islands"formation mechanism in biological crusts showed that biological crusts layer cover could increased nutrients content for below sand soil through precipitation permeate washing,and it promoted plants assimilate more nutriment.The matter import ways of biological soil crusts fertility island had many ways,including the effection of living macrobiotics metabolism in crusts levels,wind-sand flow of near surface,dust deposition and plants decomposition course,etc.Source of particle matter in biological soil crusts was wind-sand flow of near surface,and not dust deposition.Biological crusts layer cover had preserved effection for nature water content in 0-5cm soil layer,compared with the sand of no biological crusts layer,effecting precipitation permeate,and could not obvious restrained from the water evaporate process indoor experiment.

生物结皮层肥岛形成机制的研究结果表明:生物结皮层覆盖能够通过降水淋溶作用而增加下层土壤养分的含量,进而促进植物对养分的吸收;生物结皮层养分输入有结皮生物代谢、降尘、风沙流和植物分解矿化作用等多(来源:A73e3B3eC论文网www.abclunwen.com)种途径,但生物结皮层的颗粒物质来源主要是近地表风沙流,而不是大气降尘;生物结皮层覆盖对0-5cm土层自然含水量有一定的保护作用,并影响降水向深层渗透,不能有效的阻止表层水分的蒸发进程;研究表明采取人工促进技术能够在流动沙丘上形成生物结皮层,实现流动沙地的快速治理。

Two methods, including high performance gel permeation chromatography and gelatin nephelometry,are used to investigate the stability of marine sulfated polysaccharide 916 by lysozyme and trypsin, and weight average molecular, molecular weight distribution and dissociative sulfate content of 916 are determined.

利用高效凝胶渗透色谱法和明胶比浊法研究了海洋硫酸多糖 916在溶菌酶和胰蛋白酶作用下的稳定性,分别考察了酶作用下 916的重均分子量、分子量分布系数和游离硫酸根含量的变化。

In the osmotic adjustment, soluble sugar had the primary function under the early stage of drought stress, while it was praline under the late stage of drought stress.

在渗透调节上,刺槐在干旱胁迫初期可溶性糖起主要作用,在胁迫后期脯氨酸起主要作用。

Detached undissolved mucus traps suspended particles, increasing its initial organic carbon and nitrogen content by three orders of magnitude within 2 h.

溶解的粘液被浮游细菌很快降解,也在抽吸作用下穿过可渗透的礁石沙子,后者起一种生物催化过滤系统的作用。

Among these three types of water locking damage, the water locking under underpressure condition has the minimal damage, the damage under overpressure condition is relatively maximal, and the damage under normal pressure is relatively medial pressure is relatively medial.

研究表明,低渗透砂岩气藏的水锁伤害具有普遍性和严重性,其中欠压作用下的水锁伤害最小,超压作用下的水锁伤害最大,常压作用下的水锁伤害居中。

No US-pin plastic treatment therapy, a comprehensive alternative to traditional plastic injection of the United States (with the needle and micro-needle) is efficient, non-invasive and safe,"mesoderm into beauty therapy" is the latest technology of water use and water channel protein electrophoresis principle of development Note the infiltration hole electric technology to non-needle injection principle, the use of "point to a plane," AMD permeation technology in skin electroporation Act under the influence of pulsed current stimulation, so that pores have a physical reaction to the rapid spread in two seconds 650-800 of fine pores, forming an instant electronic delivery channels of nutrition, nutrition Note dialysis therapy immediately with electrophoresis, soft laser stimulation and ice, etc., in the most secure and fast, the skin will be required for nutritional products , 99% transmitted to the basal cells, and can be stored as long as 72 hours, the skin smooth and more compact, creating a perfect Beautiful Skin.

B。电穿孔技术:直接作用于皮肤,瞬间增强皮肤组织的可渗透性。在电击的作用下,细胞的脂质二重层上形成电击孔。在电击孔形成的同时,使得原先无法被细胞吸收的亲水性分子能够穿透并进入细胞内部。电击孔一旦形成,则根据电击的长度,在数秒种至数分钟之内保持打开状态。C。电渗透技术:电渗主要作用于将要分散的物质分子,帮助其顺利穿透并进入肌肤内部,性质相同的电荷相互排斥,因此对正极的营养分子施加正电流,可将营养分子推入皮肤组织。此时,中性分子也一道穿透并进入肌肤内部。

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