Search

利用范艾伦卫星2014年至2018年观测的高精度电子能谱数据, 统计分析了不同辐射带高能电子能谱类型的时空分布特征. 结果表明, 辐射带电子能谱主要被分为三类: 指数分布能谱、幂律分布能谱和反转能谱. 指数分布能谱通常在等离子体层以外占主导地位. 幂律分布能谱通常在磁暴的主相出现在高L处, 并逐渐转移到低L处. 在地磁活动平静时期, 幂律分布能谱在高L处存在时间更长, 占比更多. 反转能谱在等离子体层内L>2.5处占主导地位, 随着等离子体层层顶升高, 反转能谱增加, 指数分布能谱减少. 在长时间的地磁活动平静年份, 辐射带电子反转能谱局地峰值(约2 MeV)附近的电子通量明显较低, 反转能谱占比较少. 辐射带电子能谱类型对等离子体层层顶和地磁活动依赖性的统计分析表明, 反转能谱发生率的峰值位置约位于L=(Lpp–2)(Lpp为等离子体层层顶位置), 指数分布能谱发生率的峰值约位于L=(Lpp+1.5), 幂律分布能谱的出现与电子的注入密切相关. 磁暴越剧烈, 反转能谱被指数分布能谱取代的L范围越广泛. 在平静时期, 由于等离子体嘶声的散射作用, 等离子体层层顶内的指数分布能谱被反转能谱取代. 本文给出了辐射带电子能谱类型长期的时空分布特征, 可以为辐射带动态建模和高能电子通量预报提供理论参考.

基于ENVISAT-1/GOMOS(Global Ozone Monitoring by Occultation of Stars)和TIMED/SABER (Sounding of the Atmosphere using Broadband Emission Radiometry)卫星的臭氧廓线数据结合模式HAMMONIA (Hamburg Model of the Neutral and Ionized Atmosphere)对热带低纬度地区(20°S－20°N)中间层(60～110 km高度)夜间(20:00 LT－24:00 LT)臭氧的分布进行统计, 分析其与27天太阳周期的相关性. 观测与模式均表明中间层夜间臭氧在95 km达到峰值, 并在中间层上层存在半年振荡. 通过与相同时间段内的太阳辐射强迫Lyman-α数据对比发现, 中间层上层臭氧与太阳强迫作用可能是反相关, 中间层下层臭氧与太阳强迫作用可能呈正相关. 虽然观测结果与模型结果在臭氧随月份的时间和空间分布上有一定的相同特征, 但在臭氧峰值的数值上发现有较大的差异, 其中臭氧敏感性的振幅被模型低估.

空间引力波探测将为人类探索宇宙打开中低频段（0.1 mHz～1 Hz）引力波观测的新窗口，这个频段的引力波事件被认为具有更重要的天文学、宇宙学以及物理学意义。其典型的波源包括超大和中等质量黑洞双星的并合、极端和中等质量比黑洞双星的绕转、银河系内数以百万计的致密双星系统以及随机引力波背景等，为研究宇宙起源与演化、黑洞形成与结构、引力和时空本质、暗能量和暗物质属性等提供了全新的方法和手段。21世纪以来，欧美联合的LISA计划成功发射了技术验证卫星LISA探路者，目前LISA计划已进入工程实施阶段，中国太极计划和天琴计划也相继发射了技术实验卫星太极一号和天琴一号，标志着空间引力波探测进入了全新的发展阶段。本文主要概述近年来国内外发展态势，详细凝炼空间引力波探测与研究的科学目标和未来发展的重点领域，系统优化引力波天文学、引力波物理学以及引力波宇宙学等相关学科布局，重点阐述推进空间引力波探测与研究的重要意义和发展战略。

目的: 探讨中国广东籍汉族人细胞色素 P4502E1 基因 5′侧翼区的多态性分布规律。 方法: 利用聚合酶链反应和 Rsa Ⅰ 、Pst Ⅰ限制性片段长度多态性( PCR-RFLP)技术对 82 名正常中国广东籍汉族人的细胞色素 P4502E1 基因 5′侧翼区的 多态性进行了检测。结果: 82名正常中国广东籍汉族人的细胞色素 P4502E1 基因 5′侧翼区 C1(Rsa Ⅰ +, Pst Ⅰ-)、C2(Rsa Ⅰ-, Pst Ⅰ +)等位基因频率分别为 0. 854, 0. 146; 基因型 C1C1 、C1C2 、C2C2 的比率分别为 0. 732、0. 244、0. 024, 符合 HardyWeinberg 平衡分布。结论: 中国广东籍汉族人细胞色素 P4502E1 基因 5′侧翼区 Rsa Ⅰ和 Pst Ⅰ多态性分布规律与欧美人显著 不同。

Copyright of China Condiment is the property of China Condiment 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 Precious Metals / Guijinshu is the property of Precious Metals 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 Acta Prataculturae Sinica is the property of Acta Prataculturae 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.)

Copyright of Chinese Mental Health Journal / Zhongguo Xinli Weisheng Zazhi is the property of Chinese Mental Health Journal 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 Scientiarum Naturalium Universitatis Sunyatseni / Zhongshan Daxue Xuebao is the property of Sun-Yat-Sen 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.)

肾移植是目前终末期肾脏病最有效的治疗方案, 但排斥反应是肾移植术后面临的最大挑战, 也是导致移 植肾失功的重要原因。目前, 临床评估移植肾功能常规的免疫监测手段主要依赖于血肌酐检测和移植肾穿刺活 检。但血肌酐检测不能及时准确地反映免疫排斥状态, 而移植肾穿刺活检则具有创伤性, 不适合长期应用。因此, 临床亟需寻找一些操作简单且足够准确的免疫监测标志物, 以便准确地识别肾移植术后排斥反应并指导临床治 疗。细胞因子是一类能在细胞间传递信息, 具有免疫调节和效应功能的低相对分子质量蛋白质或小分子多肽, 是由 活化的免疫细胞及某些基质细胞表达并分泌的活性物质, 其主要生物学功能是介导和调节免疫应答及炎症反应。其中, 与肾移植免疫排斥反应发生密切相关的细胞因子有 IL-10/TNF-α、IL-33、IL-34、IL-6 等。在这些细胞因子中, 有些能够增强免疫应答, 促进排斥反应发生; 有些则能够抑制免疫细胞活化和增殖, 维持免疫耐受。因此, 这些细胞 因子有望成为肾移植术后免疫监测的潜在生物标志物。 [ABSTRACT FROM AUTHOR]

Objective To determine the activity levels of 131I in the thyroids of nuclear medicine staff in Guangzhou, estimate the internal radiation dose received by these staff, and assess their internal radiation risk. Methods From September to November 2023, a convenience sampling method was used to select 50 nuclear medicine staff from four hospitals in Guangzhou that conduct nuclear medicine diagnostics and treatments. A portable RT31EPT15 thyroid measurement device was used to directly measure the activity levels of 131I in the thyroids of the staff. The intake of 131I was estimated, and the annual committed effective dose was derived. Results Among these 50 nuclear medicine staff, 7 individuals were found to have detectable levels of 131I in their thyroids, with a detection rate of 14%. There were no statistically significant differences in detection rates among different genders and job positions (P > 0.05). Among 7 individuals with detectable 131I, the activity levels ranged from 60.8 to 143.6 Bq, with a mean of 84.1 Bq and a median of 83.7 Bq. The annual effective dose levels for physicians, technicians, and nurses were 0.29 mSv/year, 0.38 mSv/year, and 0.54 mSv/year, respectively. Conclusions The annual effective dose values of internal radiation for these 50 nuclear medicine staff in four hospitals in Guangzhou were within the standard limits. However, the risk of internal radiation exposure should not be overlooked. Routine monitoring of internal radiation doses among nuclear medicine staff should be conducted to ensure their occupational health. [ABSTRACT FROM AUTHOR]

Objective To understand the current status of knowledge, attitude/belief, and practice (KAP) regarding pulmonary rehabilitation among patients with pneumoconiosis, analyze the influencing factors, and provide a reference for further intervention measures. Methods From January 2021 to December 2022, 168 inpatients with pneumoconiosis in a certain hospital were studied. The Questionnaire Star applet was used to conduct a survey using a general information questionnaire and a self -designed pulmonary rehabilitation KAP questionnaire. Multiple linear regression analysis was performed to analyze the influencing factors of KAP in pulmonary rehabilitation. Results The total KAP score of the study subjects was (88.77 ± 14.63), with a score rate of 68.28%. The scores for each dimension of KAP were (41.62 ± 5.93), (16.89 ± 1.80), and (30.26 ± 9.50), respectively, with a score rate of 69.37%, 84.45%, and 60.52%, respectively, which all were at a moderate level. Knowledge with attitude, knowledge with behavior, and behavior with attitude were moderately positively correlated (r = 0.439, r = 0.507, r = 0.549, all P < 0.05). Multiple linear regression analysis showed that age, per capita monthly family income, and comorbidities or complications were possible influencing factors for the knowledge score of pulmonary rehabilitation. Among them, compared with the 50 to 59 year age group, the knowledge score of patients under the 50 year age group increased by 2.619 points (P < 0.01); compared with the group with a per capita monthly family income of less than 2 000 yuan, the knowledge scores of the groups with an income of 2 000 to 4 000 yuan and above 4 000 yuan increased by 1.991 points and 3.831 points, respectively (both P < 0.05); compared with the group with comorbidities or complications, the knowledge score of the group without comorbidities or complications increased by 1.976 points (P < 0.05). The age, diagnostic stage of pneumoconiosis, and the number of hospitalizations for pneumoconiosis were possible influencing factors for the belief score of pulmonary rehabilitation. In particular, compared with the 50 to 59 year age group, the belief score of patients aged 60 and above decreased by 1.963 points (P < 0.01); compared with patients with stage Ⅱ pneumoconiosis, the belief score of patients with stage I pneumoconiosis increased by 0.950 points (P < 0.01); compared with patients hospitalized 2 to 3 times for pneumoconiosis, the belief score of patients hospitalized for the first time increased by 1.609 points (P < 0.01). Diagnostic stage, educational level, and comorbidities or complications were possible influencing factors for the behavior score of pulmonary rehabilitation. Compared with patients with stage Ⅱ pneumoconiosis, the behavior score of patients with stage I pneumoconiosis increased by 6.570 points (P < 0.01); compared with the junior high school education group, the behavior scores of the primary school and high school or above groups increased by 5.911 and 5.996 points, respectively (both P < 0.01); compared with the group with comorbidities or complications, the behavior score of the group without comorbidities or complications decreased by 6.100 points (P < 0.05). Conclusions The levels of knowledge, belief, and behavior regarding pulmonary rehabilitation among patients with pneumoconiosis need to be improved. Clinically, corresponding nursing interventions should be formulated based on the current status and influencing factors of KAP in pulmonary rehabilitation among patients with pneumoconiosis to improve their KAP levels and quality of life. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Test & Measurement Technology is the property of Publishing Center of North University of China 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 China Forest Products Industry is the property of China Forest Products Industry 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 Systems Engineering & Electronics is the property of Journal of Systems Engineering & Electronics 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 Low-Carbon Chemistry & Chemical Engineering is the property of Low-Carbon Chemistry & Chemical Engineering 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 Clinical Hepatology / Linchuang Gandanbing Zazhi is the property of Journal of Clinical Hepatology 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 Feed Industry is the property of Liaoning Provincial Institute of Agricultural Mechanization 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 (China) / Huaxue Gongcheng is the property of Hualu Engineering Science & Technology 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.)

BACKGROUND: The alteration of miR-146a-3p level is a common event in the pathogenesis of most neurological diseases, and the specific mechanism of miR146a-3p regulation of astrocytes has not been studied. OBJECTIVE: To verify that miR-146a-3p regulates astrocyte proliferation, migration and apoptosis through insulin-like growth factor 1. METHODS: 12 SD rats were divided into a sham operation group and a spinal cord injury group, with six rats in each group. RNA sequencing analysis was performed on the spinal cord tissues of all groups 2 weeks after surgery to screen out the differential genes (log2FC > 2), and to select spinal cord injury-related genes (Score > 20) in the Genecards database, and then to predict the target genes of miR-146a-3p by Targetscan. The intersection of three gene sets was obtained to screen out insulin-like growth factor 1 as one of the important target genes. qPCR, western blot assay and immunohistochemistry were performed to analyze the expression level of insulin-like growth factor 1 in spinal cord tissues. The primary astrocytes were divided into NC group, NC-mimics group and miR-146a-3p mimics group. Annexin-V/PI staining was used to detect cell apoptosis. CCK-8 assay was used to detect cell proliferation. Transwell assay was used to detect cell migration ability. RESULTS AND CONCLUSION: The expression of miR-146a-3p in the spinal cord tissue of the spinal cord injury group was lower than that of the sham operation group (P < 0.05). The expression of insulin-like growth factor 1 in the spinal cord tissue of the spinal cord injury group was higher than that of the sham operation group (P < 0.05). Compared with the NC group and NC-mimics group, the apoptotic rate of astrocytes was increased (P < 0.01); the proliferation of astrocytes was decreased (P < 0.01) and the number of migration was decreased (P < 0.01) in the miR-146a-3p mimics group. To conclude, the expression of miR-146a-3p decreased and the expression of insulin-like growth factor 1 increased in spinal cord tissue after spinal cord injury. miR -146a-3p targeted regulation of insulin-like growth factor 1 in astrocytes, inhibited the proliferation and migration of astrocytes and promoted their apoptosis. [ABSTRACT FROM AUTHOR]

During the Tang and Song dynasties, Zen Buddhism was composed of the “Five Schools and Seven Sects”. The tea Zen culture in Jiangxi was represented by the Huairang school of Zen Buddhism in Nanyue. Since the opening of the Zen tea ceremony at Baizhang Huaihai, the founder of Huangbo tea had been renowned for Huangbo Zen tea. It was not until the Song Dynasty that Yuanwu Keqin pioneered the tea ceremony culture in Japan. Yangqi Fanghui was the founder of the Yangqi School of the Linji Sect in the Song Dynasty. His tea Zen inherited the fortunes of Baizhang Huaihai and Huangbo Xiyun, and integrated the teachings of Tiantong Xianqi. His teachings had been passed down to Yuanwu Keqin for three generations, and eventually spread to Japan, making great contributions to the dissemination and development of Chinese Zen tea culture. This also reflects one aspect of the development of ancient Chinese tea Zen culture. Yangqi Fanghui combined tea culture with Zen culture, using tea as an opportunity to practice Zen and exploring the harmony of tea drinking. This not only reflects the Zen philosophy of “compassion for the benefit of others and the elevation of the school of thought”, but also reflects the transformation of Zen style brought about by the integration of tea into Zen and the tasting of Zen in tea since the Song Dynasty. [ABSTRACT FROM AUTHOR]

The application of membrane technology-in the process of traditional Chinese medicine(T(: M) modernization, including the extraction and concentration of active ingredients and the preparation of TEM preparations, was reviewed, and the challenges faced by membrane technology in T(: M pharmaceutical were discussedvand the solutions were put fbrwanl based on membrane pollution, service life and large-scale application. In view of the current situation that the application of membrane technology-in the modernization of Chinese medicine is still in the experimental stage, from the angle of membrane material innovation ami combining the concept of sustainable dc\clopmrnt ami green pharmaceutical, the future development direction is prospected. [ABSTRACT FROM AUTHOR]

Objective: To detect the expression of Toll-like receptor 7 (TLR7) in blood neutrophils of patients with allergic rhinitis (AR), allergic asthma (AA) and allergic rhinitis combined with allergic asthma (ARA) before and after allergen challenge. Methods: A total of 44 AR, 36 AA, 19 ARA patients and 19 healthy control (HC) were recruited, the extracts of Artemisia siever⁃ siana wild allergen (ASWE), house dust mite allergen (HDME) and Platanus pollen allergen (PPAE) were used to challenge peripheral blood of HC as well as the patients, the expression of TLR7 in neutrophils was detected by flow cytometry. Results: In a resting state, compared with HC, upregulated expression of TLR7 in neutrophils in patients with airway allergy: the percentage of TLR7+ neutrophils in AR, AA, ARA patients increased 6 times, 3.18 times and 6.15 times, respectively, and the mean fluorescence intensity (MFI) of TLR7 expression in neutrophil in ARA was enhanced by 24%. The results of allergen challenge tests showed that the expression of neutrophils TLR7 did not change in HC subjects after the allergen challenge, whereas the expression of TLR7 in neutrophils of patients with airway allergy was upregulated after the allergens challenge. After HDME and PPAE challenge, the percentage of TLR7+neutrophils in peripheral of AR patients increased by 8.40% and 33.03%, respectively, and the MFI of TLR7 enhanced by 29.62% and 35.72%, respectively. After ASWE and PPAE challenge. The percentage of TLR7+ neutrophils in peripheral of AA patients increased by 59.18% and 1.06 times, respectively, and the MFI of TLR7 enhanced by 68.93% and 47.33%, respectively. However, after HDME stimulation only enhanced the MFI of neutrophil TLR7 in AA patients by 66.14%; after HDME challenge, the percentage of TLR7 and MFI in peripheral blood neutrophils of patients with ARA increased by 21.05% and 35.61%, respectively, while after PPAE challenge, the percentage of TLR7+ cells in patients with ARA increased by 20.07%. Conclusion: The expression of TLR7 n blood neutrophils is increased in patients with allergic airway diseases after allergen stimulation, suggesting that allergens may be involved in the occurrence and development of allergic airway diseases by inducing TLR7 expression changes in neutrophils. [ABSTRACT FROM AUTHOR]

Copyright of Xinjiang Agricultural Sciences is the property of Xinjiang Agricultural Sciences 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 Control Theory & Applications / Kongzhi Lilun Yu Yinyong is the property of Editorial Department of Control Theory & Applications 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 Control Theory & Applications / Kongzhi Lilun Yu Yinyong is the property of Editorial Department of Control Theory & Applications 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 Progress in Earthquake Sciences is the property of China Earthquake Administration, Institute of Geophysics 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.)

Copyright of Journal of Chongqing University of Technology (Natural Science) is the property of Chongqing 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 Guangdong Architecture Civil Engineering is the property of Guangdong Architecture Civil Engineering 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 Architecture & Civil Engineering is the property of Chang'an Daxue Zazhishe 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 Jilin University (Science Edition) / Jilin Daxue Xuebao (Lixue Ban) is the property of Zhongguo Xue shu qi Kan (Guang Pan Ban) Dian zi Za zhi She 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 Applied Chemical Industry is the property of Shaanxi Research Design Insitute of Petroleum & Chemical Industry 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 Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing 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 Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing 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 Modern Preventive Medicine is the property of Modern Preventive Medicine 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 Modern Preventive Medicine is the property of Modern Preventive Medicine 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 Coal Geology & Exploration is the property of Xian Research Institute of China Coal Research Institute 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 World Regional Studies is the property of World Regional Studies 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 Natural Gas & Oil is the property of Editorial Department of Natural Gas & Oil 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 Natural Gas & Oil is the property of Editorial Department of Natural Gas & Oil 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 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.)

Copyright of Urban Geology is the property of Urban 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 Jilin University (Medicine Edition) is the property of Jilin University 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.)