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Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality 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 Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research 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 Arteriosclerosis is the property of Chinese Journal of Arteriosclerosis 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 Bearing is the property of Bearing 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 The aim is to analyze the causes of serious corrosion failure of flue gas heater in Cansolv tail gas treatment unit of a natural gas purification plant. Methods The corrosion environment of the flue gas heater tube bundle was analyzed, and the failure reasons, such as the physical and chemical properties of the material, the composition of the corrosion products and the micro-morphology were analyzed. Results The physical and chemical properties of the failed tube bundle met the requirements. The leakage area of the tube bundle was pit-shaped and honeycomb-shaped, and some groove tips had cracks that penetrate deep into the substrate, exhibiting stress corrosion characteristics. Conclusions The electrochemical corrosion and stress corrosion occurred in the flue gas heater under high temperature and high acid content, resulting in corrosion leakage of the tube bundle. [ABSTRACT FROM AUTHOR]

Copyright of Advances in Earth Science (1001-8166) is the property of Advances in Earth Science 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 Rolling Stock (1002-7602) is the property of Rolling Stock 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 understand the variation patterns of soil respiration characteristics and temperature sensitivity in forest ecosystems. [ Method]Taking soil from organic and mineral layers at different altitude gradients in Shennongjia Nature Reserve as the research object, this study explored the respiratory characteristics and temperature sensitivity of soil at different altitude gradients. [Result]Soil CO2 production rate increased firstly and then decreased with the elevation increasing, and reached its maximum value at 1 892 m, while the sensitivity of soil respiration to temperature ( Q10 ) increased with the elevation increasing. Under most altitudinal gradients, soil CO2 production rate in layer B ( 20-40 cm) was significantly higher than that in layer A (0-20 cm), but it was the opposite in layer Q10 . Soil properties affected the temperature sensitivity of soil respiration, and Q10 was positively correlated with EC, SOC, TN and MBC in 0-40 cm soil. [Conclusion] Under the background of climate change, Q10 with different altitude gradients may differ. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Frontiers of Computer Science & Technology is the property of Beijing Journal of Computer Engineering & Applications Journal Co Ltd. 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 Food Safety & Quality is the property of Journal of Food Safety & Quality 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 Food Safety & Quality is the property of Journal of Food Safety & Quality 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.)

Objective The cause for corrosion in heat exchangers at a single natural gas purification plant located in Sichuan-Chongqing area was studied as well as the influencing factors so as to reach the technical solutions. Methods Microscopic analysis was conducted to study the cause for leakage in the tube bundles while the influences of Ca2+ alkalinity, Cl- and SO2-4 in the circulating water on corrosion rate were investigated by rotary hanging plate method. Results The leakage in the heat exchange tube bundle was caused by corrosion. During the process, corrosion occurred first at the inner surface of the tube bundle, which then gradually grew to form corrosion holes and finally led to the leakage. Ca2+ and alkalinity were revealed to be closely related with the corrosivity of the recirculating water: when the Ca2+ concentration was as low as 44 mg/I., the corrosion rate of the carbon steel could reach as high as 1.05 mm/a. Conclusions In order to prevent the corrosion failure of tube bundle, it is necessary to enhance the water quality control by increasing the Ca2+ concentration and alkalinity in the system or using material with higher corrosion resistance. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality 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 Food Safety & Quality is the property of Journal of Food Safety & Quality 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 Modern Laboratory Medicine is the property of Journal of Modern Laboratory Medicine 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 Shipin Kexue/ Food Science is the property of Food Science 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 Dalian University of Technology / Dalian Ligong Daxue Xuebao is the property of Journal of Dalian University of Technology 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 Experimental Technology & Management is the property of Experimental Technology & Management 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.)

鼻咽癌是头颈部最常见恶性肿瘤之一,特点为多数呈低分化或未分化癌,与 EB病毒相关,且有较高的远处转移 率。在全球的分布不均,主要分布在我国南部和东南亚地区。目前,EB病毒-DNA、EB病毒壳抗原-免疫球蛋白 A、EB病毒早期 抗原-免疫球蛋白 A 等指标均难以满足临床对鼻咽癌患者早期诊断和早期治疗的要求。因此,找到新的鼻咽癌诊治相关靶点有 助于进一步明确鼻咽癌的发生、发展机制,对鼻咽癌诊断分期、个体化治疗方案的制订和提高患者生存率等均具有重要意义。微 小 RNA(miRNA)是一段长19~22个核苷酸的内源性单链短序列非蛋白编码 RNAs,通过促使靶 miRNA 降解或抑制其翻译从 而调节靶基因的表达。目前,miRNA 在鼻咽癌中的诊断价值尚未确定,但 miRNA 异常表达与鼻咽癌诊断和患者预后相关,因而 miRNA 的检测在鼻咽癌的诊治和评估预后中具有广泛的应用前景。该文对 miRNA 在鼻咽癌诊断和评估预后中的价值进行了 综述。 [ABSTRACT FROM AUTHOR]

Objective: To explore the pathogenesis of peripheral blood interleukin-13(IL-13) and interferon-γ(IFN-γ) in children with atopic dermatitis(AD). Methods: 120 children with AD who were treated in our hospital from May 2016 to April 2018 were selected as observation group, which were divided into mild group (n=33), moderate group (n=53), severe group (n=34) according to the European Scoring of Atopic Dermatitis (SCORAD), 120 healthy children for physical examination in our hospital during the same period were selected as control group by A stratified sampling method. The levels of peripheral blood IL-13 and IFN-γ were detected by the enzyme-linked immunosorbent assay (ELISA), and the level of immunoglobulin E(IgE) was detected by the radioimmunoassay. The correlations between IL-13, IFN-γ and IgE were analyzed by Spearman correlation analysis. Results: The levels of IL-13 and IgE in the observation group before treatment were higher than those in the control group when physical examination, while the levels of IFN-γ in the observation group was lower than that in the control group when physical examination, the differences were statistically significant (P<0.05). IL-13 was positively correlated with IgE before treatment (r=0.763, P<0.05), IFN-γ was negatively correlated with IgE before treatment (r=-0.673,P<0.05), andIL-13 was negatively correlated with IFN-γ before treatment (r=-0.672, P<0.05). The levels of IL-13, IFN-γ and IgE in mild, moderate and severe groups were significantly different before treatment (P<0.05), the levels of IL-13 and IgE in severe group and moderate group were higher than those in mild group, while the levels of IFN-γ was lower than that in mild group before treatment, and the levels of IL-13 and IgE in severe group were higher than those in moderate group, and the levels of IFN-γ was lower than that in moderate group before treatment, the differences were statistically significant (P<0.05). The levels of IL-13 and IgE in observation group at 3 and 6 months after treatment were lower than those before treatment, while IFN-γ was higher than that before treatment, the differences were statistically significant (P<0.05). Conclusion: The levels of IL-13 in peripheral blood of children with AD increase, while the levels of IFN-γ decrease, which may cause imbalance of helper T cell 1/helper T cell 2 (Th1/Th2) by affecting IgE level, thus participating in the pathogenesis of AD. [ABSTRACT FROM AUTHOR]

Copyright of Experimental Technology & Management is the property of Experimental Technology & Management 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 Chemical Engineering of Oil & Gas / Shi You Yu Tian Ran Qi Hua Gong is the property of PetroChina Southwest Oil & Gas Field Company 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 Modern Laboratory Medicine is the property of Journal of Modern Laboratory Medicine 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 Chemical Engineering of Oil & Gas / Shi You Yu Tian Ran Qi Hua Gong is the property of PetroChina Southwest Oil & Gas Field Company 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 Experimental Technology & Management is the property of Experimental Technology & Management 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.)

Taking a natural gas purification plant in Sichuan as an example, the corrosion cause of the liquid sulfur storage tank was studied. The influence of H2S, O2, H2O and other factors on corrosion was investigated by weight loss method and EDS analysis. The anticorrosion effect of hot spraying aluminum and zinc were studied simultaneously. The results showed that the corrosion of liquid sulfur to Q235 was slight without water. The major reasons for corrosion of top were H2S dissolved in liquid membrane and sulfur deposition. The corrosion could be controlled by strengthening the top insulation, and metal spraying technology deserved further research. [ABSTRACT FROM AUTHOR]

In order to define personalized privacy profiles for mobile users, this paper built a KLP anonymous model, and proposed a privacy protection algorithm(AMAGS) based on anonymous set exchange merging process, which featured the construction of minimal initial k-anonymity sets, an exchanging process and a merging process. The algorithm could be used to protect the location, identifier and other sensitive information of the mobile users on a road network. The simulation results show that AMAGS can obtain more accurate results with less response time and lower query cost than P3 RN under the premise of effectively protecting data privacy. [ABSTRACT FROM AUTHOR]

The desulfurization device of a natural gas purification plant in Sichuan-Chongqing gas field has the characteristics of high acid gas load, large processing capacity and amine circulation. The complete overhaul results showed that the corrosion thickness of the bottom of regenerator, reboiler, and the return line of semi-lean liquid were seriously decreased. The corrosion conditions in the field were analyzed and evaluated by macroscopic observation, corrosion coupon test and hydrogen probes, and the corresponding corrosion control measures and supervision/inspection schemes were developed. The results showed that the high cyclic volume and acid gas load were the main factors leading to the serious corrosion of the bottom of the regenerator, and the carbon steel inner lined 316L stainless steel could preferable inhibit the corrosion in the bottom of the regenerator. [ABSTRACT FROM AUTHOR]

In order to improve the water utilization efficiency, a natural gas purification plant used the treated water from electrodialysis(ED) and multiple-effect evaporation(MEV) processes as make-up water in the recirculating system. However, the field coupon tests showed the corrosion rate reached 0.15 mm/a,beyond the requirements set by GB 50050-2007. The water quality analysis indicated that Ca2+ and Mg2+ concentration in the treated water from ED and MEV was comparatively low. When the volume of make-up water was significant, it would lead to low Cycles of Concentration(CoC), increase of water stability index and corrosivity. Bench-scale tests investigated the impacts of reusing treated blowdown water on circulating cooling water and subsequently, organophosphate complex was prepared to formulate the water treatment chemical b to inhibit the corrosion. The tests showed that when the sum of Ca2+ concentration and the total alkalinity was in the range of 200-600 mg/L, both corrosion inhibition rate and scale inhibition rate could be higher than 90%, which guaranteed the steady operation of the natural gas purification plant. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Central China Normal University is the property of Huazhong Normal University 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 Chemical Engineering of Oil & Gas / Shi You Yu Tian Ran Qi Hua Gong is the property of PetroChina Southwest Oil & Gas Field Company 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 Liquid Crystal & Displays is the property of Chinese Journal of Liquid Crystal & Displays 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 Chemical Engineering of Oil & Gas / Shi You Yu Tian Ran Qi Hua Gong is the property of PetroChina Southwest Oil & Gas Field Company 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.)