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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.)

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.)

[Objective] The KNOX (KNOTTEDI-like homeobox) transcription factor family plays an important role in plant growth and flower organ development. The KNOX transcription factors of Antirrhinum majus were identified and analyzed, and the key candidate genes regulating stamen petalization in A. majus were explored. [Method] The bioinformatics methods were used to identify the AmKNOX genes at the whole genome level, including gene structure, protein physicochemical properties, subcellular localization, phylogenetic relationship, chromosome localization, promoter cis-acting elements and transcription factor binding sites analysis. RNA-seq analysis and qRT-PCR verifica- tion were performed to explore AmKNOX candidate genes using petalized and non-petalized stamens of A. majus. [Result] A total of 11 AmKNOX genes were identified from A. majus, all of which had four conserved regions of KNOX I, KNOX II, ELK and HOX and were classi- fied into Class I (AmKNOX1, AmKNOX2, AmKNOX3, AmKNOX9 and AmKNOX11) and Class II (AmKNOX5, AmKNOX4, AmKNOX7, AmKNOX10, AmKNOX6 and AmKNOX8). The AmKNOX protein contained 282-406 amino acids and were localized in the nucleus. Anal- ysis of promoter cis-acting elements showed that AmKNOX family members were involved in plant growth, hormonal and abiotic stress respon- ses. Moreover, AmKNOXs had a large number of transcription factor binding sites related to plant growth and development, organ differentia- tion, and physiological regulation of stress. RNA-seq and qRT-PCR analysis showed that AmKNOX family genes were significantly differenti- ally expressed in petalized and non-petalized stamens of A. majus. [Conclusion] The study identified 11 AmKNOX members, of which five positive (AmKNOX5, AmKNOX10, AmKNOX6, AmKNOX4 and AmKNOX9) and one negative (AmKNOX11) candidate genes involved in stamen petalization were ultimately identified. Among them, the expression level of AmKNOX5 gene in petalized stamens was 2703% higher than that in normal stamens, and the inference function should be particularly important. The study laid a foundation for in-depth analysis of the molecular mechanism of flower development and genetic improvement of A. majus. [ABSTRACT FROM AUTHOR]

Copyright of Occupational Health & Emergency Rescue is the property of Occupational Health & Emergency Rescue 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.)

国内外规范中关于单角钢轴压承载力的计算理论及计算值不尽相同,按照ASCE 10-97计算所得的承载力安全保障不足,而按照国内规范设计则安全裕度较大,偏保守。针对国内外规范计算得到的单角钢轴压承载力差异较大的问题,对比分析了各相关规范关于单角钢轴压承载力的计算理论,开展了3个规格3种长细比的Q345单角钢的轴压承载力试验;探讨了国内外单角钢轴压承载力试验值与规范值的差异。经分析研究可知,当长细比较大时,角钢主要发生绕最小轴的弯曲破坏,此时宽厚比对单角钢轴压承载力的影响不大,对宽厚比有限值的公式可在长细比较大时对其进行修正;按照美国规范ASCE 10-97计算出的角钢承载力规范值与试验结果吻合较好,我国规范《架空输电线路杆塔结构设计技术规定》(DL/T 5154—2002)可参考美国规范的计算方法来进行修正。

【Objective】The study aimed to clone, and analyze the bioinformatics, expression patterns and tobacco genetic transformation of NnTOM1 gene in Lotus (Nelumbo nucifera), which would provide a foundation for further study on the function of NnTOM1 gene.【Method】NnTOM1 gene was obtained by cloning, and its protein physicochemical properties, and conserved domain etc. were analyzed using bioinformatics tools. The tissue-specific expression of NnTOM1 gene was analyzed by quantitative real-time polymerase chain reaction (qRT-PCR). The biological function of NnTOM1 gene was preliminarily verified by tobacco genetic transformation.【Result】The study revealed that the coding sequence (CDS) of NnTOM1 gene was 1191 bp, which encoded 396 amino acids, and the protein molecular formula was C1918H3130N560O589S16. The secondary structure of the protein was mainly composed of α-helix and random coil. It contained the TOM family conserved domains (VHS-ENTH-ANTH and GAT), which was localized in the cytoplasm. Multiple sequences comparison and phylogenetic tree analysis showed that NnTOM1 protein was closely related to Macadamia integrifolia, Telopea speciosissima and Macleaya cordata, and the sequence identity was high. The results of qRT-PCR showed that the expression of NnTOM1 gene was highest in petalized stamens and lowest in roots, moreover, it was higher in multiple-petal varieties than single-petal varieties. The phenotype of NnTOM1 positive transgenic plants showed that compared with the wild type, the color of the petals was deepened, the tip of the petals was pointed, the spacing of the petals was widen, and the filaments were longer and obviously longer than the style. The OE-1 strain with a phenotype of 6 petals had one more petal than the wild type.【Conclusion】The NnTOM1 gene in lotus might be involved in flower organs development. The study provided a preliminary basis for further study on the function of NnTOM1 gene, and provided a new gene resource for breeding of new lotus varieties. [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.)

The glass fiber cloth is a kind of composite material made of graphene and glass fiber. The covering rate of graphene on glass fiber is more than 99 %, so it is an excellent electric heating material. Tn order to study the electrical heating properties of the glass cloth made of montmorillonite and promote its application in related fields, the electrical heating properties of the glass cloth made of montmorillonite with different surface resistance values were tested. The results show that, on the macroscopic level, the monofilament fiber is 7.5/. tm in diameter. The color of the monofilament fiber is uniform and the color difference is not obvious. There are 312 monofilaments in a single tow, the space between square holes is 430.27-438.34/im, and the twist is controlled at about 70 twist. At the micro-level, shown by the scanning electron microscope, the surface of the tow is covered evenly by graphene, not flaky, incomplete or wrinkled, and the surface of the monofilament is smooth and clean while the obvious 2T) and G peaks were observed by Raman spectroscopy. The results show that the lower the surface resistance is, the faster the heating rate is, and the higher the stability of the electric heating temperature is. The electrical heating temperature of 150 fl/1 I graphene-skinned glass fiber cloth can be rapidly stabilized at 543 °C, and the heating rate can reach 185.1 °C/s. For the graphene-skinned glass fiber cloth with large surface resistance, both the temperature stability and the temperature rise rate show a significant downward trend at the same voltage, and the surface resistance of different surface resistance specifications of graphene-skinned glass fiber cloth is negatively correlated with the electric heating temperature. There is a positive correlation between the input voltage and the electric heating temperature. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Harbin University of Science & Technology is the property of Journal of Harbin University of Science & 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.)

In order to accurately predict tunnel construction gas disasters and effectively evaluate gas safety, a prediction and evaluation model of tunnel construction gas safety based on grey relational analysis (GRA) and sparrow search algorithm (SSA) is established. Firstly, considering the hydrogeological conditions, tunnel design, coal seam structure and construction management, 12 main influencing factors are selected, and the correlation between the selected influencing factors and the evaluation object is quantitatively analyzed by GRA method. Then, SSA is introduced to optimize the initial weight and threshold in Elman model, and the model performance is verified by leaving one cross validation method. Finally, in order to further verify the performance of the model, the selected samples of gas tunnel to be tested are evaluated for gas disaster prediction, and compared with the prediction results of PSO-Elman, Elman, Fisher discriminant analysis (FDA) model and the field actual results. The results show that the SSA-Elman prediction results are more consistent with the actual engineering results, and the optimized model has better accuracy and stability, strong operability, and good applicability to the gas safety evaluation of tunnel construction. [ABSTRACT FROM AUTHOR]

Copyright of Tunnel Construction / Suidao Jianshe (Zhong-Yingwen Ban) is the property of Tunnel Construction 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 Medical Equipment Journal is the property of Chinese Medical Equipment Journal 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 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 Basic & Clinical Medicine is the property of Editorial Office of Basic & Clinical Medicine 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 Water Conservancy Science & Techonlogy & Economy is the property of Water Conservancy Science & Technology & Economy 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.)

In order to predict the risk level of tunnel collapse and reduce the disaster accidents caused by tunnel collapse, a tunnel collapse risk prediction model based on artificial bee colony(ABC) optimization support vector machine regression ( SVR) was established. Firstly, considering engineering geology, hydrometeorology, design factors and construction factors, 13 main influencing factors were selected to establish the tunnel collapse risk index system. Then, the artificial bee colony algorithm was introduced to optimize the kernel parameter C and penalty parameter g of SVR, the defect of low stability of traditional SVR was solved, and the accuracy of the model was improved. In order to verify the performance of the model, the evaluation parameters of correlation coefficient (R²), mean square error (MSE) and root mean square error (RMSE) were compared and analyzed. Finally, taking a water supply project in northern Xinjiang as the research object, the tunnel collapse risk test samples were predicted, and the ABC-SVR, PSO-SVR, GA-SVR and SVR models were compared and analyzed respectively. The results show that the prediction results of ABC-SVR are 100%, PSO-SVR are 83.3%, GA-SVR and SVR are 66.67% . The prediction results of ABC-SVR are more consistent with the actual engineering results, which can provide a scientific decision-making basis for tunnel collapse risk assessment. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Nanjing Agricultural University / Nanjuing Nongye Daxue Xuebao is the property of Journal of Nanjing Agricultural 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.)

提出了一种当视频中的运动物体有较大范围的运动时，对其进行分割的方法.首先利用帧差法来快速定位运动物体的位置，并以此作为初始分割结果.然后利用均值偏移法准确估计运动物体的边缘并利用图切割方法建立两者之间联系.考虑到视频的运动连续性，同时引入前一帧分割结果来约束当前帧的分割.该算法同时利用了帧差法和均值偏移法的优点，能够快速准确地分割在视频场景中出现的运动物体.

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 Journal of Hydrobiology is the property of Editorial Department of Journal of Hydrobiology 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 Nanjing Medical University: Natural Sciences is the property of Journal of Nanjing Medicial University (NMU) Medical Publications Center 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.)

在差分GPS系统的应用中,基准站的精确定位是一个重要问题.本文首先介绍了C/A码差分GPS基准站的精确定位的一般方法,着重对在实践中最常用的简单平均方法做了详细分析.针对简单平均方法的不足之处,提出了一种基于精度衰减因子(DOP)加权的卡尔曼滤波方法.实验结果表明,本文提出的C/A码差分GPS基准站定位方法能够有效地提高定位精度.

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 Tunnel Construction / Suidao Jianshe (Zhong-Yingwen Ban) is the property of Tunnel Construction 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.)

Since 2010, the South China Sea dispute has been expanding and becoming increasingly complicated, gradually forming a situation in which neighboring countries around the South China Sea are encroaching on islands and reefs, and extra-regional countries are becoming widely involved, thus increasingly pushing the South China Sea issue toward internationalization. We analyze the relationship between cooperation and conflict among countries (regions) around the South China Sea and explore the reasons for the complication of the South China Sea issue more deeply, especially the information production power competition around the issue, which is the bridge between information power and discourse power, as well as the link between cyberspace and physical space. Further, our findings can help China understand the current situation in the South China Sea and avoid strategic miscalculations. Based on the GDELT(Global Database of Events, Language, and Tone) database, we extracted event data about the South China Sea issue from 2013 to 2021 and used the chronologically constrained clustering method to divide the South China Sea issue into a period of rising conflicts (2013 - 2018) and a period of extra-regional involvement (after 2019). We used the social network analysis method to explore the relationship between cooperation and conflict among countries (regions) involved in the South China Sea issue and the information production networks behind them. We found the following: (1) During the period of rising conflicts, the main subjects of cooperation and conflict regarding the South China Sea issue were mainly countries (regions) around this sea. (2) During the period of extra-regional involvement, the United States, Britain, Australia, and other extra-regional countries have allied and cooperated to besiege China regarding the South China Sea issue, and China has become the core of the network of conflicting relations while cooperating closely with intra-regional countries. The complex conflict relationship and shrinking cooperation relationship contradict our current perception regarding the South China Sea issue to stop the chaos and resolve the issue, reflecting the increasingly profound role of information power. (3) In the information production network, the United States, Britain, Australia, and other countries dominate the information production and processing, while China and other intra-regional countries (regions) are gradually marginalized from the information production network handling the South China Sea issue, indicating that the issue has become a wrestling ground for various information actors. The above results seem to indicate that the South China Sea issue of "reduced cooperation and widespread conflict" is the result of the involvement of extra-regional countries such as the United States, Britain, and Australia in the information power competition over the South China Sea, and that information power geopolitical actors in cyberspace can use their information power ties to influence the expression of the relationships among countries in physical space. [ABSTRACT FROM AUTHOR]

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 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 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 Journal of Shanghai Jiaotong University (Medical Science) is the property of Journal of Shanghai Jiaotong University (Medical Science) 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.)