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Copyright of Acta Agronomica Sinica is the property of Crop Science Society 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.)

Predicting and controlling uneven settlement is a key problem to be solved in subgrade widening engineering. In view of the different treatment processes and load processes of the new and old subgrade, finite element analysis and other methods were used to explore the appropriate new subgrade treatment process, the joint stress and mutual influence mechanism of the new and old subgrade, predict the settlement during the construction period and after construction, propose the un even settlement control scheme, and successfully apply it to the reconstruction and expansion project of Hudi Avenue. The experience can be used for reference in the implementation of similar projects. [ABSTRACT FROM AUTHOR]

Based on the daily meteorological data of 35 national meteorological observation stations in Dabie Mountains from 1971 to 2020, the spatiotemporal distribution characteristics of spring frost disaster for tea plant were analyzed with trend surface interpolation and ArcGIS technology. According to the theory of natural disasters risk, the risk of hazard-formation factors, the exposure of hazard-formation environments, the vulnerability of hazard-affected bodies and the capability of hazard prevention and mitigation were taken as the evaluation factors, the weighted comprehensive evaluation method was used to construct the comprehensive risk assessment model of spring frost disaster. The risk zoning had been carried out based by the means of ArcGIS technology. The results showed that: (1) the number of occurrence days of spring frost in different grades decreased significantly from 1971 to 2020, with the average number of occurrence days of total, slight, moderate and severe spring frost being 9.6, 5.2, 3.0 and 1.4d respectively, and the climatic tendency rates being -1.45, -0.61, -0.54 and -0.30d·10y-1. The number of occurrence days was positively correlated with altitude and latitude, and the downward trend of the number of occurrence days in the northern region was much more obvious than that in the southern region. (2) The high risk, medium risk and low risk areas of tea spring frost disaster accounted for 16.67%, 41.88% and 41.45% of the total area in the study region respectively. The high-risk areas were mainly located in the high mountainous regions with an altitude of more than 600m in Jinzhai, Yuexi, Huoshan, Yingshan and Xinyang, as well as scattered shady slopes (northern slopes); the medium-risk areas were mainly located in the mountainous region with an altitude of less than 600m and most of the low-altitude region at the northern foot of Dabie Mountains, and scattered shady slope (north slope) in the low-altitude region at the southern foot of Dabie Mountains; the low-risk region were mainly located in the low-altitude region at the southern foot of Dabie Mountains, and scattered sunny slope (south slope) in the low-altitude areas at the northern foot of Dabie Mountains. The refined assessment of the risk of tea spring frost could provide reference for optimizing the layout of the tea industry and enhancing disaster prevention and mitigation capabilities in Dabie Mountains. [ABSTRACT FROM AUTHOR]

Copyright of Mechanical & Electronic Control Engineering is the property of Omniscient Pte. 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 Mechanical & Electronic Control Engineering is the property of Omniscient Pte. 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.)

Objective To investigate the effect of curcumin combined with 5-Fluorouracil (5-FU) on the growth of colorectal cancer (CRC) mice transplanted tumor and its possible molecular mechanism. Methods The CRC cell line SW480 was inoculated subcutaneously into the right armpit of BALB/c mice. After successful modeling, the mice were randomly divided into the control group, the Cur group, the 5-FU group and the combined group, with 10 mice in each group. After continuous administration for 14 days, the mice were euthanized, and the quality of transplanted tumors, tumor mass inhibition rate, transplanted tumor volume, tumor volume inhibition rate, as well as the relative expression levels of miR-148a and B-lymphoblastoma-2 (Bcl-2) were compared in each group. Results The quality of transplanted tumor in the Cur group, the 5-FU group and the combination group was significantly lower than that in the control group (P＜0.05). The quality of transplanted tumor and the tumor mass inhibition rate in the Cur group and the 5-FU group were significantly different from those in the combined group (P＜0.05). The volume of transplanted tumor in the Cur group, the 5-FU group and the combination group was significantly lower than that in the control group (P＜0.05). The volume of transplanted tumor in the Cur group and the 5-FU group was significantly different from that in the combined group (P＜0.05). There was statistically significant difference in tumor volume inhibition rate between the 5-FU group and the combined group (P＜0.05). The relative expression level of miR-148a in the transplanted tumor tissue of the Cur group and the combination group was significantly higher than that of the control group (P＜0.05). The relative expression level of Bcl-2 in the Cur group, the 5-FU group and the combination group was significantly lower than that in the control group (P＜0.05). The relative expression levels of miR-148a, Bcl-2 in the combined group were significantly higher than those in the curcumin group and the 5-FU group (P＜0.05). Conclusion Curcumin can enhance the ability of 5-FU to inhibit the growth of CRC mice transplanted tumor, and its mechanism may be related to the regulation of miR-148a and Bcl-2 expression and the induction of tumor apoptosis. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Modern Medicine & Health is the property of Journal of Modern Medicine & Health 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.)

To study the effect of nanomaterials on the performance of asphalt and its mixture, 0.2%, 0.4%, and 0.6% of nano silicon dioxide powder (NSiP) were used to prepare modified asphalt and its mixture. Rotational viscometer and bending beam rheometer (BBR) were used to evaluate the high and low temperature rheological properties of modified asphalt. Based on the strain recovery percentage under 3.2 kPa in the MSCR test and the stiffness modulus index in the BBR test, the aging indexes of short-term aging and long-term aging were obtained and fitted. In addition, the freeze-thaw split test was used to evaluate the water stability of the modified asphalt mixture. The results show that under the modified conditions of 0.2%, 0.4%, and 0.6% of NSiP, the comprehensive performance of asphalt after 0.4% NSiP modification is better. NSiP can improve the aging performance of asphalt. The MSCR aging index has a good linear relationship with the BBR aging index. Meanwhile, the water stability of the modified asphalt mixture has been significantly improved. [ABSTRACT FROM AUTHOR]

Copyright of Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural Engineering 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 effect of cancer suppressor gene NM23-H2 on migration ability of colorectal adenocarcinoma and its correlation with Janus kinase-Signal transducer and activator of transcription （JAK-STAT） signaling pathway. Methods A total of 80 pathological wax blocks were collected from the first people’s hospital of Xiangtan city in from January 2018 to January 2021,including 35 cases of adenocarcinoma tissue,20 cases of para-carcinoma tissue, and 25 cases of lymph node metastasis. Immunohistochemical methods was used to staining, and the expressions of P-STAT3 and NM23-H2 in the three wax blocks were statistically analyze. The recombinant plasmid with NM23-H2 gene was transfected into human colorectal adenocarcinoma SW620 cells. Transwell assay was used to detect the effect of NM23-H2 on the migration ability of SW620 cells. Western blotting was used to detect the expression of P-STAT3 in SW620 cells of stable transfection group and non-transfection group. Results There were significant differences in the expressions of P-STAT3 and NM23-H2 among the three wax blocks （P<0.05）;NM23-H2 could inhibit the migration ability of SW620 cells and down-regulate the expression of P-STAT3 in SW620 cells. Conclusion The inhibition of NM23-H2 on the occurrence, development and migration of colorectal adenocarcinoma may be related to the down-regulation of JAK-STAT signaling pathway activity. [ABSTRACT FROM AUTHOR]

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 Acta Agronomica Sinica is the property of Crop Science Society 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 Journal of Henan Agricultural Sciences is the property of Editorial Board of Journal of Henan Agricultural Sciences 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 Industry is the property of Natural Gas Industry Journal Agency 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.)