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     while the percentages of CD8+ and CD3+ CD56+ cells were decreased from (31.1±7.8)% and (6.4±3.5)% to (28.6±8.3)% (P<0.05) and (5.2±3.3)% (P<0.05).
     CD8+和CD3+CD56+效应细胞比例下降,由回输前的(31.1±7.8)%和(6.4±3.5)%下降至回输后的(28.6±8.3)%(P<0.05)和(5.2±3.3)%(P<0.05)。
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     serum testosterone levels decreased from 5.5,39.2(M,Q)nmol/L to 0.2,9.7 nmol/L(P<0.05);
     血睾酮水平明显下降 ,由5.5 ,39.2(M ,Q)nmol/L降至0.2 ,9.7nmol/L(P<0.05) ;
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     Results: It was found that when IGF-1 genes were introduced, the blood glucose levels in group T were decreased from (28. 71 ±1. 79)mmol/L to (17. 02 ±1. 69)mmol/L, while serum concentrations of IGF-1 were significantly increased from (109. 34 ± 10. 90)ng/ml to (135. 61 ±6. 15)ng/ ml.
     结果:ICF-1基因治疗后,T组血糖较治疗前明显下降,由(28.71±1.79)mmol/L至(17.02±1.69)mmol/L,同时血IGF-1较基础水平明显升高,由(109.34±10.90)ng/ml至(135.61±6.15)ng/ml;
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     ① After SCI, content of NE in 6-OHNA group was decreased from (217.45±4.26) ng/g to (29.37±2.61) ng/g, and the difference was significant (P < 0.01).
     ①6-羟基多巴胺组伤后髓内去甲肾上腺素含量明显下降,由(217.45±4.26)ng/g降到(29.37±2.61)ng/g,差异有显著性意义(P<0.01)。
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     Results After RNAi,the expressions of E-cadherin were significantly decreased from 63.7% to 11.9%(P<0.01),which indicated that RNAi was effective.
     结果RNAi后HO-8910细胞E-cad表达显著下降,由63.7%降低为11.9%(P<0.01),RNAi有效;
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  dropped from
     The portal pressure dropped from 3.7~41kPa to 2.4~2.7 kPa following TIPSS. Bleeding from upper digestive tract stopped.
     分流术后门脉压力下降 ,由3 7~ 4 1kPa降至 2 4~ 2 7kPa ,消化道出血停止。
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     Results The total use of antibiotics was dropped, from 79.6% in 1997 to 69.0% in 2001. Increasing of MRS had no corelation with the total use of antibiotics, but had a positive correlation with the use of the third generation cephalosporins(r = 0.9511 ,P < 0.01) .
     结果 1997年~2001年抗生素的总使用率下降,由1997年的79.6%降到2001年的69.0%,而第三代头孢菌素的使用率显著增加,由1997年的8.61%到2001年的18.66%;
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     Lastly, all data were analysed by software SPSS10.0 and SAS6.12. Results: After intervening the prevalence rate of RTI dropped from 66.02% to 24.69% , which was lower than that in the control group (48.81%).
     全部数据用SPSS10.0及SAS6.12软件进行统计分析。 结果:干预后RTI患病率显著下降,由干预前的66.02%下降为24.69%,低于对照组的48.81%。
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     Yield strength went up to two times, and enlongation dropped from 69. 3% to 50. 8%. Brittle characterization was seen on the fracture surface layer, while fracture of the matrix was charactered as toughness. Electrochemical corrosion property was decreased.
     屈服强度增加了近2倍,断裂伸长率下降,由原来的69.3%降低到50.8%,断口形貌中表面层呈现脆性断裂特征,心部为韧性断裂特征,耐蚀性能降低。
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     The serum level of total bilirubin reduced from(357.7±142.5) μmol/L before to(174.7±87.6) μmol/L after PTBD.
     治疗后总胆红素明显下降,由(357.7±142.5)μmol/L降至(174.7±87.6)μmol/L。
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     Solubility of W in matrix phase decreases from 58.65% (mass content) to 29.86% when 0.4% La-Y is added.
     添加稀土元素后,使得W在粘结相中的溶解度明显下降,由58.65%下降为添加0.4%La Y时的29.86%。
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     After treatment with Trastuzumab and/or IFNα-2b,the expression of HER2,MRP1 genes of RCC was decreased significantly,from 62.82%, 69.42% to 24.35%, 16.87% respectively (P< 0.05).
     经药物处理后,HER2、MRP1表达明显下降,由用药前的62.82%、69.42%降到用药后的24.35%、16.87%(P<0.05)。
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     stimulated by genistein,the percentage of cell cycles from phase G 0+G 1 to S and G 2+M decreased significantly.
     genistein使该细胞株增殖比明显下降 ,由G0 +G1 期进入S和G2 +M期的细胞明显减少。
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     H22's ratio of G0/G1 phase may decrease from 73.6% to 64.7% and the ratio of S phase may increase from 12.6% to 28.2%, and cell cycle stops at S phase.
     H22细胞在LFP引一,作用下随时间的延长G。 /G,期比率下降由73.6%降至64.7%,S期比率逐渐增加由12.6%增加至28.2%。
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  decreased from
The order of the reaction rates decreased from Me to t-Bu (R=Me>amp;gt;Et>amp;gt;t-Bu).
      
The simulated experimental results indicate that the relative error of the correlation dimension of standard chaotic time series is decreased from 4.4% when using conventional algorithm to 1.06% when using this algorithm.
      
The EF per 10 thousand Yuan GDP per capita in Yanbian decreased from 1996 to 2002.
      
Farmland decreased from 6354 to 3813 km2 in the 23 years, while the built-up area increased from 421 to 2642 km2.
      
With the addition of a calcium-based sorbent, arsenic concentration in PM1 sharply decreased from 0.25-0.11 mg/m3.
      
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  dropped from
As a result of diurnal ammonium and orthophosphate assimilation by the alga, their concentration in bottom waters dropped from 5.1 to 3.5 and from 0.45 to 0.35 μM/l, respectively.
      
In low-N soil, the shoot-to-root ratio of Avena dropped from 2.63±0.20 in the early growth stage to 1.47±0.03 in the late growth stage, indicating that Avena plant allocated more energy to roots to optimize nutrient uptake (i.e.
      
This entire system of inverse dynamics is linear although no nonlinear terms are dropped from the original direct set of equations.
      
In this experimental study, pine nuts were dropped from a certain height onto a ceramic board; the impinging sound was recorded by a microphone.
      
In the first case, tissue45Ca content (equivalent to the exchangeable Ca2+ content) dropped from 1.960±0.120 mmol/kg of wet weight (w.w.) to 0.715±0.049 mmol/kg w.w.
      
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For various carbon and low-alloy steels with a wide range of the tensile strength, the effect of hydrogen on the apparent yield stress, which is a necessary exterior stress to produce the local macroscopi c plasti c deformation, was investigated with smooth tensile, bending, pre-cracked type Ⅰ-, type Ⅲ- and combined type Ⅰ+Ⅲ specimens. The results show that the effect of hydrogen on the yield strength of a smooth tensile specimen is insignificant, the difference between the charged and uncharged specimens is...

For various carbon and low-alloy steels with a wide range of the tensile strength, the effect of hydrogen on the apparent yield stress, which is a necessary exterior stress to produce the local macroscopi c plasti c deformation, was investigated with smooth tensile, bending, pre-cracked type Ⅰ-, type Ⅲ- and combined type Ⅰ+Ⅲ specimens. The results show that the effect of hydrogen on the yield strength of a smooth tensile specimen is insignificant, the difference between the charged and uncharged specimens is less than 10%. However, for the smooth bending or pre-cracked Ⅰ-type specimen with a. tensile stress gradient, hydrogen can decrease the apparent yield stress considerably if the strength of steel and the amount of hydrogen entering into the specimen exceed their critical values. This is the cause of hydrogen induced delayed plastic deformation and hydrogen induced delayed cracking.The effect of hydrogen on the apparent yield stress increases with increasing strength of the steel and average hydrogen concentration in the specimen. The reduction of the apparent yield stress of charged pre-cracked specimens is more evident than that of smooth bending ones. The hydrogen induced apparent yield stress reduction is a phenomenon controlled by hydrogen diffusion, it depends markedly on the strain rate and test temperature.For type Ⅲ- cracked specimens, in which there is no hydrostatic stress the apparent torsional yield stress of the charged specimens does not decrease and K_(ⅢH)=K_(ⅢC). But hydrogen induced delayed plasticity and cracking can occur on the specific plane inclined at an angle of —45° to the original crack plane, For combined type Ⅰ+Ⅲ specimens, the apparent torsional yield stress can be decreased only when K_1 is so large that hydrogen induced delayed plasticity can occur under the action of K_1 itself.

利用光滑拉伸试样以及带有应力梯度的弯曲试样和预裂纹试样(Ⅰ型、Ⅲ型以及Ⅰ—Ⅲ复合型),研究了氢对产生局部宏观塑性变形所需外应力(称为表观屈服应力)的影响。结果表明,氢对低合金钢的屈服强度影响不大,但如试样中存在拉应力梯度,则当钢的强度和进入试样的氢浓度超过临界值后,氢能使表观屈服应力明显下降,这就是氢致滞后塑性变形的原因。氢致表观屈服应力的下降是由氢的扩散所控制的。它明显依赖加载速度和试验温度。但它随试验温度的变化不是单调的,在室温附近存在一个极值。对仅存在剪应力梯度的Ⅲ型裂纹试样,充氢后表观扭转屈服应力并不降低,沿原裂纹面也不产生滞后裂纹,即K_(ⅢH)=K_(ⅢC),但在和原裂纹面成-45°的平面上却能产生氢致滞后塑性变形和裂纹。对Ⅰ—Ⅲ复合型试样,只有当恒定的K_Ⅰ大到足以单独就能产生滞后塑性变形时才能使表观扭转屈服应力开始下降。提出了一个氢使表观屈服应力下降的机构。

A study was made on the changes of tensile properties of martensite plus ferrite dual-phase

本文研究了不同马氏体含量的双相10号及20号钢经80~500℃回火后拉伸性能的变化。结果表明,随回火温度的升高,两种双相钢的抗拉强度均明显下降,而延伸率大为提高。屈服强度在低于160℃回火时略有升高而后下降。高于120℃回火时,屈服平台开始出现并不断增大。剪切滞后分析证实,回火后双相钢强度的下降由两部分组成,即马氏体和铁素体分别承受的载荷的下降。马氏体含量和马氏体合碳量的增高,会使前者所占的比份增大。马氏体的软化本身还减弱了铁素休的相硬化和加工硬化能力,因而对双相钢强度的降低有着重要的影响。马氏体含碳量越高,这种回火效果越明显。低温回火时延性的改善主要归因于铁素体中间隙原子的析出。随回火温度的升高及淬火态马氏体含碳量的增多,马氏体软化则逐渐成为双相钢延伸率大幅度提高的主要原因。

Monsoon forest is a tropical forest-type, which part or most the upper canopy trees drought-deciduous during dry season of every year, or they are deciduous subdominant species in the tree crown.Monsoon forest is a forest-type of tropical climatic moisture gradient and a forest- type transition from tropical rainforest to tropical woodland.For this reason, the viewpoint of《China Vegetation》(1980), i.e.monsoon forest is the northeast type of tropical forest horizonal distribution, on the one hand it developing...

Monsoon forest is a tropical forest-type, which part or most the upper canopy trees drought-deciduous during dry season of every year, or they are deciduous subdominant species in the tree crown.Monsoon forest is a forest-type of tropical climatic moisture gradient and a forest- type transition from tropical rainforest to tropical woodland.For this reason, the viewpoint of《China Vegetation》(1980), i.e.monsoon forest is the northeast type of tropical forest horizonal distribution, on the one hand it developing to tropical rain forest and on other hand also tran- sition to subtropical evergreen broadleaved forest, were uncertain. Ficus formation and Endospermum formation in the lower subtro- pical region are not monsoon forests, they are the lower subtropical rain forests or the lower subtropical evergreen broad-leaved lowland forests. The single dominant Vatica formation is not monsoon forest but an edaphic climax of tropical rain forest in Hainan.

季雨林是受制于湿度因子的经度地带性植被类型,它是随着湿度条件的下降由热带雨林向热带疏林过渡的居间类型,而不是受制于温度因子的纬度地带性植被类型,不是随着温度条件的下降由热带雨林向亚热带常绿阔叶林过渡的居间类型。我国南亚热带的榕树群系、黄桐群系,以及热带北缘的青皮群系均不应是季雨林,前二者是典型的南亚热带低地常绿阔叶林或南亚热带雨林,后者则是热带雨林的一分类群。

 
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