Search

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Earth Sciences & Environment is the property of Journal of Earth Sciences & Environment and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Engineering Geology / Gongcheng Dizhi Xuebao is the property of Journal of Engineering Geology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Hydrogeology & Engineering Geology / Shuiwendizhi Gongchengdizhi is the property of Hydrogeology & Engineering Geology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The correlation calculation model between landslide and assessment factors has a direct impact on the accuracy of landslide susceptibility evaluation. From Baihetan reservoir area the impact of various correlation models on landslide susceptibility evaluation is studied. The empirical model represented by the analytic hierarchy process(AHP) and the statistical model represented by the information value(IV) are respectively coupled with BP neural network(BPNN) model to evaluate landslide susceptibility. The evaluation results of the BPNN model alone are used in the comparison. To compare and assess landslide susceptibility data, the ROC curve, frequency ratio, and susceptibility index distribution(mean value and standard deviation) are utilized. The IVBPNN coupling model beats the AHP-BPNN coupling model in terms of accuracy, and the statistical analysis model beats the AHP-BPNN coupling model in terms of landslide evaluation factor correlation analysis. Susceptibility evaluation results from a single BPNN model are less accurate than those from a coupled model. The study found that using the coupling model of the evaluation factor correlation approach to assess landslide susceptibility has evident benefits. The statistical analysis model represented by the information method is used as an evaluation factor for the coupling calculation, and the sensitivity evaluation result obtained by the correlation method is more accurate and reliable. It is more in line with the actual distribution of landslides in the study area. [ABSTRACT FROM AUTHOR]

Granite residual soil is a kind of special soil, which is easy to induce geological disasters under the condition of heavy rainfall. Taking the mass landslides in Beiling area, Longchuan County, Guangdong Province as the background, the formation mechanism of typical landslides was explored by means of physical simulation. The results show as follows. The influencing factors of landslides are rainfall intensity, physical and mechanical properties of rock and soil mass, slope structure. Rainfall did not cause the abnormal increase or decrease of soil pressure and pore water pressure in the slope, indicating that the failure of the slope was limited to the local failure of the slope surface and the slope toe, and there was no overall deformation and failure trend. On the surface of the slope, the slope was eroded by rainfall, and on the foot of the slope, the free surface collapses and undergoes erosion. On the whole, the slope showed the characteristics of “step by step retreat and damage in turn”. The evolutionary process of landslide could be divided into the following four stages: original slope evolution stage, soil particle migration stage, slope surface local failure stage and overall instability stage. [ABSTRACT FROM AUTHOR]

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Geological Hazard & Control is the property of China Institute of Geological Environmental Monitoring (CIGEM) Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Engineering Geology / Gongcheng Dizhi Xuebao is the property of Journal of Engineering Geology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Engineering Geology / Gongcheng Dizhi Xuebao is the property of Journal of Engineering Geology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Hydrogeology & Engineering Geology / Shuiwendizhi Gongchengdizhi is the property of Hydrogeology & Engineering Geology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Engineering Geology / Gongcheng Dizhi Xuebao is the property of Journal of Engineering Geology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Engineering Geology / Gongcheng Dizhi Xuebao is the property of Journal of Engineering Geology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Engineering Geology / Gongcheng Dizhi Xuebao is the property of Journal of Engineering Geology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

目的探讨沙利度胺对肝癌HepG2细胞增殖、凋亡的影响及其机制。方法将体外培养的人肝癌 日HepG2细胞分为对照组和观察1、2、3组，对照组正常培养，观察1、2、3组分别加人0.50、1.00、2.00#8/(=沙利度 胺，继续培养72 h。采用MTT法观察细胞增殖能力（以OD#。表示），Hoechst 33258染色法观察凋亡细胞数量及形 态，实时荧光定量PCR法检测细胞B淋巴细胞瘤2! Bcl-2)、B淋巴细胞瘤2相关X蛋白（Bax) mRNA相对表达量， ELISA法检测细胞培养液上清液Bcl-2、Bax蛋白。结果观察1、2、3组细胞OD49。均低于对照组（P均<0. 05);观 察1、2、3组细胞OD#。依次降低，两两比较P均< 0.05。对照组正常H-G2细胞在紫外线激发下呈均匀的蓝色荧 光，淡染;从观察1组到观察3组，随着沙利度胺剂量的增加，H-G2细胞数明显减少，细胞核出现不同程度的皱 缩、破裂，发出较强的蓝白色荧光;同一细胞内出现形状不规则颗粒状、大小不等的多个凋亡小体;荧光强度比较% 对照组 < 观察1组 < 观察2组 < 观察3组。Bel-2 mRNA相对表达量:对照组 > 观察1组 > 观察2组 > 观察3组！ ！ 均< 0. 05 )，Bx mRNA相对表达量:对照组 < 观察1组 < 观察2组 < 观察3组！ ！均< 0. 05 )。细胞培养液上清液 Bel-2蛋白表达:对照组 > 观察1组 > 观察2组 > 观察3组！！均<0. 05)，细胞培养液上清液Bx蛋白表达:对照组 <观察1组 < 观察2组 < 观察3组！ ！均<0. 05 )。结论沙利度胺能体外抑制肝癌HepG2细胞增殖并诱导其凋 亡，此作用呈剂量依赖性;其机制可能为抑制肝癌H-G2细胞Bel-2表达、促进Bx表达。 [ABSTRACT FROM AUTHOR]

Copyright of Journal of Engineering Geology / Gongcheng Dizhi Xuebao is the property of Journal of Engineering Geology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Engineering Geology / Gongcheng Dizhi Xuebao is the property of Journal of Engineering Geology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Engineering Geology / Gongcheng Dizhi Xuebao is the property of Journal of Engineering Geology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Research & Exploration in Laboratory is the property of Research & Exploration in Laboratory and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)