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Copyright of Electric Power Automation Equipment / Dianli Zidonghua Shebei is the property of Electric Power Automation Equipment Press 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　探讨血清人半胱氨酸蛋白酶抑制剂S（CST4）检测对胃癌的诊断效能。方法　收集胃癌患者80例 （胃癌组），慢性萎缩性胃炎、胃息肉、胃溃疡患者50例（癌前组），浅表性胃炎患者50例（胃炎组）。采集患者空腹静 脉血，采用酶联免疫双抗夹心法定量检测 CST4，化学发光微粒子免疫法检测癌胚抗原（CEA）、糖类抗原 125 （CA125）、糖类抗原 199（CA199）；采用新型胃癌筛查（GCR）评分系统评价胃癌风险程度。比较三组上述指标的差 异，应用受试者工作特征曲线（ROC）分析各指标单独检测与联合检测对胃癌的诊断效能。结果　胃癌组 CST4、 CEA、CA125、CA199水平及GCR评分均高于癌前组和胃炎组（P均<0. 05）；癌前组GCR评分高于胃炎组（P<0. 05）， CST4、CEA、CA125、CA199水平与胃炎组比较差异无统计学意义（P均>0. 05）。ROC 曲线分析显示，单项指标检测 中血清CST4的诊断效能最高，敏感度为76. 8%，特异度为80. 1%；CST4、CEA、CA125、CA199、GCR评分联合检测诊 断胃癌的AUC高于各单项指标，敏感度为81. 9%，特异度为83. 1%。结论　血清CST4对胃癌诊断效能高于目前临 床常用的指标，其与临床常用肿瘤标志物联合应用可进一步提高胃癌的诊断率。 [ABSTRACT FROM AUTHOR]

Copyright of Mining & Metallurgy (10057854) is the property of Beijing Research Institute of Mining & Metallurgy Technology Group 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 Nonferrous Metals (Mineral Processing Section) is the property of Beijing Research Institute of Mining & Metallurgy Technology Group 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 Mining & Metallurgy (10057854) is the property of Beijing Research Institute of Mining & Metallurgy Technology Group 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 Nonferrous Metals (Mineral Processing Section) is the property of Beijing Research Institute of Mining & Metallurgy Technology Group 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 Electric Power Automation Equipment / Dianli Zidonghua Shebei is the property of Electric Power Automation Equipment Press 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 Nonferrous Metals (Mineral Processing Section) is the property of Beijing Research Institute of Mining & Metallurgy Technology Group 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 Acta Sedimentologica Sinica is the property of Acta Sedimentologica Sinica 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.)

Objective: To investigate the diagnostic value of serum GP73 combined with Dickkopf-1 and AFP in hepatocellular carcinoma. Methods: 117 cases of hepatocellular carcinoma in our hospital were collected as hepatocellular carcinoma group, 80 patients with hepatitis B virus as the hepatitis group, and randomly selected 80 healthy subjects as the control group from September 2014 to September 2016. The serums GP73, Dickkopf-1, AFP level of every group were detected by the enzyme-linked immunosorbent assay (ELISA), and the relationship between the GP73, Dickkopf-1, AFP between clinicopathological features were analyzed, the diagnostic value of GP73, Dickkopf-1 and AFP in hepatocellular carcinoma were analyzed. Results: The serums GP73, Dickkopf-1，AFP level of hepatocellular carcinoma group were higher than those of hepatitis group, control group, and the serum AFP level of hepatitis group was higher than that of control group, the difference was statistically significant (P<0.05). The GP73, Dickkopf-1, AFP in patients with classification B~C were higher than those in classification A among the Child Pugh classification, the difference was statistically significant (P<0.05). No statistical significance on difference of GP73, Dickkopf-1, AFP between different differentiation, tumor size, number of tumors was found (P>0.05). The sensitivity, specificity, positice predictive value, negative predictive value, and accuracy of GP73+Dickkopf-1+AFP in the diagnosis of hepatocellular carcinoma were higher than those of GP73, Dickkopf-1, AFP respectively, the difference was statistically significant (P<0.05). Conclusion: Serums GP73, Dickkopf-1, AFP in patients with hepatocellular carcinoma have high expression levels, combined with the three indicators can obviously improve the diagnostic value of hepatocellular carcinoma, which has clinically important reference value. [ABSTRACT FROM AUTHOR]

A positive dialkyl dithiocarbonates collector S-dodecyl O-isopropyl dithiocarbonate (DIDTC) was synthesized and used in the flotation separation of chalcopyrite from pyrite. The results of flotation test indicated that DIDTC collector had better selectivity than butyl xanthate. UV-vis spectra demonstrated that DIDTC showed more affinities to Cu2+ ions than to Fe3+ ions. FTIR spectra and adsorption test were executed to study the adsorption mechanism of DIDTC to chalcopyrite. The results elucidated that DIDTC might bond copper atoms of chalcopyrite surface with its sulfur and oxygen atoms in alkaline environments， and formed a multilayer at high concentration. In addition， the results were analyzed from the structure-activity of collectors by generalized perturbation theory and density functional calculation with GGA/PW91 as exchange correlation functional. [ABSTRACT FROM AUTHOR]

Copyright of Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine 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.)