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It has become the restrictive factor of economic development. The implement of water saving rebuild programming in northern droughty areas is an important measure for sustainable use of water.This study is based on the investigation of the type, step and method of SEA, and focuses on the water saving rebuild programming in Mongolia Hetao regions as a case. The SEA technique is applied to agricultural sustaining using of water. The contents and impact factors are summarized along with the objective and standards defined clearly. This paper also offers assessment indexs on water saving rebuild programming, which evaluates the subsequent environmental impacts and public benefits. Some measures avoiding the negative impact are also presented to ensure that this programming is in accordance with the principle of sustainable development.
本论文在对战略环评的类型、步骤和方法进行充分调研的基础上,针对内蒙河套灌区水资源可持续利用的节水改造规划,将战略环评的相关方法应用到灌区农业水资源的可持续利用战略中,概括其环境评价所涵盖的内容,分析总结相关的影响因子,明确评价目标和标准,尤其突出战略环评在节水改造规划应用中的评价指标,重点评价灌溉节水改造规划实施后,对环境产生的影响及其环境经济效益,并提出减缓负面影响的保护措施,使这一规划在实施过程中更加符合可持续发展的原则。
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Study on the driving forces of land use/cover temporal-spatial change. On the basis of the systematical study on natural and social-ecomic factors including climate, population, technology and affluence status etc. during the past 50 years in this area, the multivariate statistics simulation models of LUCC were developed for two periods of 1950's-1980's and 1986-2000 respectively. Then, the Thiesson polygon method was used to the spatial allocation of soci-economic factors, thereby the spatial relationship between land use degree change and socieconomic factor variation was detected within GIS. Based on the analysis of the integrative characters in different geographical divisions, the electivity index was employed to describe the possible impacts of the natural landscape structure on spatial differentiation of land use transition. At last, correlation analysis between major roads and the distribution of land use change was made.
分析近50年气候资料和人文因子在不同年代的变化特点,系统地研究了气温和降水等自然因子和人口、农牧业发展、经济状况等人文因子对区域土地利用变化的影响;从时间序列的角度分析了50年代至80年代初和80年代中期至2000年两个时段土地利用/土地覆被变化的驱动因子,在相关分析的基础上,分时段建立了区域土地利用/覆被变化的自然-人文影响统计诊断模型;针对不同经济类型区选择典型县,分析近15年土地利用变化外在人文驱动力的区域相似性和差异性;尝试以THIESSEN多边形方法进行社会经济统计数据的空间化处理,探讨了土地利用程度变化与人文因素变化的空间相关关系;以优先指数模型和土地利用类型转化率与距交通干线距离的相关模型分析了景观自然与人文结构对土地利用空间转化过程的影响。
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Specifically, itcontains 8 chapters.In chapter 1, the formation, structures, properties and the futureprospect of liposome were thoroughly reviewed;In chapter 2, the stibility and permeability of phopholipid -eleostericacid liposome were studied together with the effect of polymerizationof eleostearic acid. This membrane system was very sensitive to 〓,the effect of 〓 was clarified to increase the aggregation/fusion ofliposomes and made the permeability of mixed liposomes much higher;In chapter 3, two polymerizable conjugated diyne bolaamphiphiles were synthesized. They could form very stable mixed liposome, andthe diyne could be polymerized by UV light in bilayer liposomes, as aresult, the stability of mixed liposome against solvent or surfactantafter polymerization were enhanced. In chapter 4, two kinds of amphiphilic amino acids were synthesized andstable liposomes were formed therefrom After the condensationpolymerization of amino acid in bilayer liposomes, stable polypeptide liposomes were obtained, which had lower phase transition temperatureand higher permeability.In chapter 5, four kinds of glycolipids were synthesized and theiraggregation behavior in water was comparied. When incorporated intophospholipid bilayer membranes, they could increase the phase transitiontemperatures and inhibit the aggregation and fusion of mixedliposomesat lower temperature.In chapter 6 and 7, three kinds of steroidal bolaamphiphiles withdifferent chain lengths were synthesized. Incorporation of steroidalmoiety to the center of lipid bilayer membrane obviously increased themobility of lipid membrane and shifted Tc to lower temperature side incomparasion with cholesterol. The bolaamphiphile which was shorter thanthe hosted lipid bilayer membrane thickness influenced the lipid packingmore obviously.
全文共分8章:第一章对脂质体的形成、结构、性质及展望进行了较为详细的文献综述;第二章研究了磷脂-桐酸脂质体的稳定性,通透能力及桐酸的聚合对这些性质的影响;磷脂-桐酸混合脂质体为一类对〓灵敏的脂质体,〓的作用首先是使脂质体集聚然后使脂质体融合,并加速内包荧光物的释放;第三章通过合成两种可聚合共轭双炔双极性双亲分子DDCA,DDOL,研究了共双炔分子在双分子层脂质体膜上的聚合及对脂质体性质的影响,聚合可以提高脂质体相对于溶剂及表面活性剂的稳定性;第四章合成了两类氨基酸为极性基团的双亲分子,它们均可以在超声下形成稳定的脂质体结构;氨基酸基团可以在脂质体上进行缩聚反应,若聚合后脂质体表面仍有足够的亲水能力,则可得到稳定的多肽型脂质体;聚合后脂质体的相变温度降低,通透能力增加;第五章合成了四种亲水基团为单糖基的双亲分子GL-l,GL-2,GL-3, GL-4,研究了它们在水中的分散情况、集合体形态与分子结构的关系;在DMPC双分子层膜中加入糖脂分子可以使脂质体的相变温度提高,阻止脂质体在低温放置时的集聚与融合;第六章-第七章合成了三种不同碳链长度的双极性含胆甾环双亲分子 CL-1,CL-2,CL-3;它们可以象胆固醇一样与磷脂混合形成稳定脂质体,胆甾环基团位于脂质体双分子层膜的中间;与胆固醇的作用相反,它们可以增加磷脂双分子层膜的流动性,降低混合脂质体的相变温度;三种分子的作用与其碳链长度和磷脂双分子层膜的厚度有关,比膜厚度短的分子影响最大。
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As the addition of dry time, solid content shows the downtrend of little scope, dry time is negligible to the influence of solid content not plan; as dry temperature elevatory, the solid content of adhesive is shown substantially downtrend, temperature is more apparent to the influence of solid content, but in 115 ℃- between 125 ℃, the change of solid content is very little, the influence is negligible not plan.
随着干燥时间的增加,固体含量呈小幅度的下降趋向,干燥时间对固体含量的影响可以忽略不计;随着干燥温度的升高,胶粘剂的固体含量呈大幅度的下降趋向,温度对固体含量的影响比较明显,但是在115℃-125℃之间,固体含量的变化很小,影响可以忽略不计。
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Copper contaminated soil was selected, Brassica juncea and Elsholtzia splendens plants were used, then simulation experiment, hydroponic culture, column leaching experiment and pot experiment were conducted to study (1) effects of organic chelants on the Cu specition in soil solution and soil soild phase;(2)Effect and mechanism of organic chelants on plant growth and Cu uptake by plant;(3) nutrient addition on plant growth and Cu accumulation;(4) limitation of chelant in soil;(5) Desolving on nutrient and heavy metals in soil and their environmental risk by chelant application and (6) effects of degradable organic chelant and microbial materials on plant growth and phytoremediation efficiency of Cu contaminated soil.
选择铜污染土壤,利用印度芥菜和海州香薷植物,通过室内模拟试验、水培试验、土柱淋溶试验、温室盆栽试验,开展了以下六方面的工作:(1)有机络合剂对土壤铜固-液相形态、浓度变化的影响;(2)有机络合调控对对植物生长与铜吸收的影响及其机理;(3)养分调控对植物生长和铜积累的影响;(4)有机调控剂的作用时限;(5)有机物对土壤养分、重金属的络合溶解和淋溶作用与环境风险;(6)可降解络合剂及微生物菌剂对海州香薷修复污染土壤的效应。
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Soil fertility and elucidative density are important factors affecting biological properties of field mint, such as total leaves of main stem, quantity of stem, total leaves of small stem, quantity of efficacious leaves among these properties, total leaves of small stem relieved more influence, and the degree of influence can be impressed by the ration of total leaves of small stem to main stem.
不同施肥水平与种植密度是影响薄荷生物学性状,即单株主茎叶片数、分枝数、分枝叶片数及有效叶片数的重要因素,其中分枝叶片数影响较大,可用单株分枝叶片数与主茎叶片数之间的比值反映出影响程度大小。
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For to theory parts, how to model the process of transferring from imitation to innovation. In terms of empirics, firm-level data could be more useful for our findings. Whether intermediate imports can influence the efficiency of innovation and also how this influence depends on certain technological characteristics at the industry and firm level; how to decodes technology embedded in its imports from exports when analyzing technology benefits associated with exporting and how FDI enhance productivity in host country: via disembodied technology spillovers or via imports related to FDI are a lengthy research agenda.
值得进一步研究的问题有,构建从模仿到自主创新的分析框架;运用企业层次的数据也许对我们的实证结论更有启发意义;中间产品或资本品的进口是否能够对创新的效率产生影响以及这种影响如何决定于产业和企业的某些技术特征;在分析出口的生产率效应时,如何解析出内含于进口产品中的技术;FDI是通过何种途径对东道国的生产率产生影响:是借助于非物化的技术溢出,还是借助于与FDI相联系的进口。
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And Heterosigma akashiwo had the remarkable harmful influence on the early development of Paralichthys olivaceus Engraulis japonicus and Lateolabrax japonicus, none on the Penaeus japonicus Bate , Chlamys farreri.
塔玛亚历山大藻和赤潮异湾藻对渔业生物早期发育阶段的影响及致毒途径塔玛亚历山大藻和赤潮异湾藻对牙鲆、鳀鱼、鲈鱼、栉孔扇贝和日本对虾早期发育阶段影响的研究结果表明:(1)在本实验设置的条件下,塔玛亚历山大藻对实验所用生物均有显著影响(P<0.05)。
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Which means, for preference, to explain how they can interact, and, failing this, to render plausible either epiphenomenalism (the view that the mental is produced by the physical, but has no influence back on the physical)or parallelism(the view that mental and physical realms "march in step," but without either causally interacting with the other).
这意味着,必须优先对心灵与身体之间如何相互影响作出解释,否则就会堕入似是而非的副现象论(这一观点认为,心理状态是由身体产生,但是却不能反过来影响身体),或平行论(这一观点认为,心理与身体同步行进,但却互不影响)。
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And for the stress in the directional direction, which is imposed on the lathe-bed, the bending plane is an epiplastron, therefore, the batten wall pore should be designed in the epiplastron.
而当孔的位置是位于弯曲中性轴附近的时候,其对弯曲刚度的影响比较小,而当其远离中性轴即靠近边缘的时候,对弯曲刚度的影响就越大,所以应该将板壁孔布置在弯曲中性轴附近,这样可以减少孔对床身刚度的影响。
- 推荐网络例句
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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.
从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。
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The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.
集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐
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The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.
血精的原因很,以良性病变为主。