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The fiber length has only little influence on the basic density within the growth rings, and significant correlation at 0.01 levels was found between the basic density and the fiber length among the different rings. Only slight negative correlation was found between the basic density and the fiber width within the growth rings, but significant positive correlation at 0.01 levels was indicated between the basic density and the fiber width among the growth rings, contrary to that of fiber length. It was demonstrated that significant positive correlations at 0.01 levels between the basic density and fiber double wall thickness, fiber length to width ratio and double wall thickness to diameter ratio, significant negative correlations at 0.01 levels between the basic density and fiber diameter and diameter to width ratio, only slight negative correlation between the basic density and fiber width both in the same growth rings and among the different growth rings. No significant correlation was found between the basic density and the vessel morphological features, nor was the tissue proportion in the same growth rings. But among the different rings, it was found there was significant positive correlation at 0.01 levels between the basic density and the fiber proportion among the different rings, and significant negative correlation at 0.01 levels between the basic density and vessel-elements proportion and ray proportion, only slight negative correlation between the basic density and the parenchym proportion. Significant or no significant negative correlation was found between the basic density and the microfibril angle in the same growth rings, but significant negative correlation was found between the basic density and the microfibril angle among the different growth rings.

生长轮内纤维长度对基本密度的影响不大,而在不同生长轮间纤维长度与基本密度达极显著正相关,纤维宽度与此相反,同一生长轮内纤维宽度与基本密度极显著负相关,不同生长轮间只有微弱负相关;基本密度与纤维双壁厚、长宽比、壁腔比在生长轮内和生长轮间均呈极显著正相关,而与胞腔直径、腔径比均呈极显著负相关,仅与纤维宽度呈微弱的负相关;导管形态对基本密度的影响不显著;同一生长轮内组织比量对基本密度的影响也不显著,但不同生长轮间基本密度与纤维比量呈极显著正相关,与导管比量和木射线比量呈极显著负相关,与轴向薄壁细胞比量仅呈不显著负相关;生长轮内基本密度与微纤丝角呈显著或不显著负相关,但在生长轮间这种负相关达到极显著水平。

A series of Pd/α-Al2O3 catalysts for CO coupling reaction were prepared with α-Al2O3 made from different methods. The effect of pore-foaming agent and peptizer on the support and the effect of alumina pore structure on the dispersion and activity of catalysts were studied.

考察了不同制备方法得到的α-Al2O3载体对CO催化偶联制草酸二甲酯反应的影响,研究了致孔剂和胶溶剂对载体的影响以及氧化铝孔结构对催化剂分散度和活性的影响。

After the cell growth curves was recorded, RPE cells of the 3-5th passages were utilized. 2、Three different siRNA (siRNAl,siRNA2,siRNA3) targeting against human cx43 gene and one negative control siRNA were designed and transfected into cultured human RPE cells via liposome reagent. The most effective siRNA can be determined by semi-quantitative reverse transcription PCRRT-PCR. 3、To the most effective siRNA, after transfected into human RPEs with different concentration, the cellular proliferate activities were messured by MTT colorimetry ; the percentages of RPE in different cell circle phase was assayed by FCM; the changes of phenotypical properities were observed with SCM; the protein expression of cx43 was studied through immunocytochemistry stain and Weston blot; the communication intercellular was calculated with FRAP; and the ability of recovery was assessed by using an in vitro wound healing model.4、The total proteins of siRNA1 and RPE were seperated by two-dimensional gel electrophoresis and visualized by silver staining. Proteins with significant expression alterations were selected and their peptide mass fingerprints (PMFs were obtained by matrix-assisted laser desorption/ionization time of flying mass spectrometry (MALDI-TOF-MS).The PMFs were used to search NCBInr database by Auto MS-Fit software.

实验方法:1、培养原代的人RPE细胞,经过细胞角蛋白、S-100和神经胶质原纤维酸性蛋白免疫细胞化学鉴定后,通过AO/PI染色技术确定培养细胞的存活率,描记其生长曲线,第3-5代用于以下细胞实验2、生物合成针对人cx43基因的三条小干扰RNA和一条阴性RNA通过脂质体转染RPE细胞后,通过RT-PCR的方法确定抑制效率最高的干扰片断3、将该片段以不同浓度通过阳离子脂质体转染培养的人RPE细胞后,采用MTT法观察其对细胞的增殖力的作用;通过流式细胞仪观察其对细胞周期的影响;通过扫描电镜观察其对细胞形态的影响;通过免疫细胞化学和Weston blot观察其对cx43蛋白表达的作用;采用激光共聚焦和荧光淬灭恢复技术观察荧光恢复速率平均百分率,评价其对细胞间通讯功能的影响;通过制作RPE细胞损伤模型,观察其对损伤修复能力的作用4、分离纯化转染siRNA的RPE组和正常对照组RPE细胞的全部蛋白质,应用等电聚焦电泳和SDS-PAGE双向电泳技术,银染显示分离出的蛋白质斑点,经凝胶图像分析软件对两个样本进行胶图分析,寻找差异蛋白点。

Both Fas and NO can lead chondrocyte apoptosis respectively and cause articular cartilage destruction. IGF-Ⅰ, TGF-β, bFGF, BMP and other growth factors are polypeptide agents that can influence cell activity by signal convection. They can accelerate chondrocyte proliferation and proteoglycan synthesis, play the local regulation action on formation and plerosis of bone and cartilage tissue by autocrine or paracrine. They have the ability to induce cartilage formation. Some investigations showed that growth factors can influence chondrocyte metabolism, synthesis of specific Ⅱ type collagen and proteoglycan by co-operation and inhibition. 1. 3 Situation of OA therapeutics The therapeutic methods of OA mainly comprised non-drug treatment, drug treatment, operation treatment, tissue and genetic engineering, et al. Drug treatment is the chief method among them.

若其活性发生改变,则将导致关节软骨基质成分的丢失和进行性破坏;软骨细胞凋亡与OA的发病密切相关,Fas与NO可各自独立介导软骨细胞凋亡,造成关节软骨破坏;IGF-Ⅰ、TGF-β、bFGF、BMP等生长因子是一组通过细胞间信号传递影响细胞活动的多肽因子,具有促进细胞生长、增殖与合成等作用,可通过自分泌或旁分泌方式对骨和软骨的形成和修复起局部调节作用,可促进软骨细胞增殖、分化与蛋白多糖的合成,具有较强的诱导软骨形成的能力,研究表明多种生长因子相互促进、相互抑制,以协同或拮抗方式影响软骨细胞代谢,影响软骨细胞特异性Ⅱ型胶原和蛋白多糖的合成分泌。

Test results show that the shear strength parameters of the fly ash with high calcium oxide content can make a notable change due to pozzolanic action and frost and thaw cycles, but for the fly ash with low calcium oxide content this phenomenon is not very obvious,and the influence of the frost and thaw cycles can be neglected.

试验结果表明,高氧化钙含量的粉煤灰的强度指标受上述两种作用的影响显著;低氧化钙含量的粉煤灰的强度指标在凝硬作用下也有所提高,但基本不受冻融作用的影响;干贮粉煤灰的渗透系数受凝硬和冻融作用的影响较小。

The pyrogenation relationship equation among staying time, temperature and the rate of volatile is acquired.

数值分析固态医疗垃圾在SMW-CFBC燃烧时,首次采用关联矩模型和PDF模型相结合的模型来确定存在组分浓度脉动、温度和反应度脉动情况下紊流燃烧速率,同时,考虑垃圾颗粒的挥发析出反应所引起的变质量对流体或气相中湍流的作用,颗粒变质量过程对气相中湍流反应的影响;有反应的颗粒相自身的影响问题;湍流对颗粒反应的影响。

The present research situation about AB process in and out of our country was analyzed in this paper. In addition to a concentrated study of the factors affecting sedimentation performance of A-step activated sludge, the rule of microbe multiplication, yield of activated sludge in A-step and treatment of low-concentration sewage were also involved in this paper. The main conclusions are as follows:(1) The study on factors affecting sedimentation performance of A-step activated sludge shown that the inflow SS distinctly improve sedimentation performance of activated sludge, the less influent SS makes the sludge bulking easy, and the pythogenous sewage evidently worsen sedimentation performance of activated sludge.

本文分析了国内外AB工艺的研究现状,对A段活性污泥沉降性能的影响因素;A段的微生物增殖规律、活性污泥产量以及A段工艺处理低浓度城市污水等问题进行了试验研究,得出了以下结论:(1)对A段活性污泥沉降性能影响因素的研究表明:进水中的SS对污泥沉降性能有明显的改善作用,如果进水中SS较少,易导致污泥膨胀;而腐化污水对活性污泥的沉降性能有显著的不良影响。

This paper,on the basis of theoretical analysis,makes a quantitive research on the infl...

本文在理论分析的基础上,采用我国1990年、2000年199个城市建成区数据,对建成区的规模的影响因素进行定量分析,认为城市的经济发展水平是城市用地规模的主要影响因素,而且对不同类型的城市的影响程度有所不同,并进一步提出实施城市用地规模动态管理的建议。

The welding nugget happened to dynamically recrystallize and the refined crystal grains were obtained and the majority of Mg_2Si particles dissoluted due to the intensive mechanical stir and higher high temperature. In the thermal-mechanical affect zone that was heated under the recrystallized temperature, the crystal grains were elongated due to the mechanical stir and Mg_2Si particles partly dissoluted and the others grew. In the heat affect heat without the mechanical stir, to some extent, both of the crystal grains and the majority of Mg_2Si particles grew.

焊核区受到强烈机械搅拌作用和加热到较高的温度发生动态再结晶,得到细小等轴晶组织,Mg_2Si相以溶解为主;热机影响区加热温度低于再结晶温度,在机械搅拌作用下晶粒由于塑性变形而伸长,Mg_2Si相部分溶解,部分长大;热影响区仅受加热影响,晶粒有一定程度长大,Mg_2Si相以长大为主。

Coverage includes water and soil contamination; environmental problems associated with transportation; geological processes affecting biosystems and people; remediation of man-made or geological hazards; environmental problems associated with mining and abstraction activities for industrial minerals, coal and ores as well as for oil and gas, water and energy; environmental impacts of exploration and recultivation; impacts of hazardous facilities and activities; land use management; management of environmental data and information in data banks and information systems.

主题包括:废弃物处理和管理造成的水和土壤污染;工业造成的水和土壤污染;运输引起的环境问题;威胁或影响生物系统和人们的地质作用过程;人类造成的或地质作用引起的灾害的减缓;地球物质材料资源的恢复保护;采矿活动造成的环境问题,如煤、金属矿石、石油、天然气、水等;勘探的环境影响;危险物质和活动的环境影响;土地利用(包括社会政治的政策决定);环境数据和信息的管理。网站免费提供该刊1975年创刊至今的目次和文摘,全文则仅限授权用户使用。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。