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城市电网存在着供电能力有限、无功储备不足等问题,合理的接入柔性直流可以有效地缓解上述问题。在无功控制方面,提出城市电网多源无功协控策略,利用柔性直流动态无功调出迅速、灵活可控的优点,将柔性直流纳入城市电网传统无功支撑源（发电机、调相机、投切电容等）协调控制体系,充分发挥柔直暂态电压控制响应迅速、传统无功源稳态电压控制低成本优势,在实际电网仿真中验证控制策略的有效性。考虑柔性直流接入城市电网后可能带来的短路电流超标风险,针对现有的短路电流计算方法对柔性直流远端故障场景计算结果偏保守问题,提出一种考虑柔性直流接入影响的电网短路电流简化计算方法,满足城市电网远端故障时的短路计算精度的需求,支撑实际电网的短路电流工程计算。

Copyright of Journal of Shanghai Jiao Tong University (1006-2467) is the property of Journal of Shanghai Jiao Tong University 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 Electric Power is the property of Electric Power 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 China Brewing is the property of China Brewing 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 Kunming Medical University / Kunming Yike Daxue Xuebao is the property of Kunming Medical 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.)

【Objective】To explore the effect of canola water extract on the growth of the seedlings.【Methods】Using distilled water as the control,three concentrations (0.025,0.050,and 0.100 g/mL) of laboratory prepared canola water extract were set to analyze the effects on canola seed germination,seedling growth,main nutrients,and defense enzyme activity.【Results】Compared with the control,the canola water extract of 0.050 g/mL and 0.100 g/mL significantly (P<0.05) reduced the seed germination rate of canola. At the concentration of 0.025 g/mL there were promotion effects on stem length,while at concentrations of 0.050 and 0.100 g/mL,there were inhibitory effects on stem length. All three concentrations had inhibitory effects on the root length of canola seedlings. As the concentration of canola water extract increased,the allelopathic comprehensive effects of canola were "low promotion and high inhibition". In comparison with the control,concentration of 0.100 g/mL significantly (P<0.05) reduced the canola protein content. At concentration of 0.050 g/mL canola proline content was 115.39% higher than the control. The SOD activity of canola treated with different concentrations of water extract was significantly (P<0.05) lower than the control. At the concentration of 0.025 g/mL,the POD activity of canola seedlings was significantly (P<0.05) higher than the control. Different concentrations of water extract treatment had different effect on the variations in canola malondialdehyde content.【Conclusion】Strong autotoxicity existed in canola. [ABSTRACT FROM AUTHOR]

Copyright of Coatings & Protection / Tuceng yu Fanghu is the property of Coating & Protection 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 Computer Engineering & Applications 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.)

Objective To compare the accuracy of six operative methods of ultrasound-guided fine-needle aspiration biopsy of thyroid nodules and to share the experience of the operation. Methods The data of 1903 patients who underwent thyroid surgery, pre-operative fine-needle biopsy (FNA) and definite pathological findings after surgery were included. The data of the above patients were divided into 6 groups：A1-A3, B1-B3 according to the angle of FNA needle insertion and sampling technique. category A for end-lateral and category B for side-lateral； category 1 for negative pressure aspiration, category 2 for normal pressure aspiration, and category 3 for closed pressure entry and exit. Based on the traditional evaluation indexes, the Bowker weighted test was used to compare their differences and the Kappa linear weighted test for consistency. The advantages and disadvantages of the six different operation methods were finally evaluated. Results Sensitivity: Category A was higher than category B. Highest in group A3；96.47% and lowest in group B2；87.69%；Specificity: all were 100%; Accuracy: category A was higher than category B subgroups, highest in group A3；97.69%，and lowest in group B2; 91.20%;Positive prediction rate: all were 100%；Negative prediction rate: category A was higher than class B subgroups. The highest A3 was 95.65% in group A3, and the lowest was 78.57% in group B2;Yordon index: higher in category A than in category B. The highest was 96.47% in group A3 and the lowest was 87.69% in group B2. Bowker’s weighted test results: the P -values were：A3 > A1 > A2 > B3 = B1 = B2.The P of A1, A2, B1, B2, and B3 < 0.01, statistically significantly different from postoperative histopathological results. The P-value of A3 was 0.072, P>0.05. There was no statistical difference with the postoperative histopathological result in A3；Kappa consistency test (linear weighted) results：A3 > A1 > A2 > B3 > B1 > B2; The highest value was 0.959 for the A3 group, and the lowest was 0.821 for the B2 group. Conclusions Based on the traditional evaluation index, paired chi-square and Kappa test results, the end-lateral approach with closed-pressure entry and exit sampling method (A3 group) have the closest cytologic pathology results to postoperative histologic pathology and is the best FNA approach with high sampling quality. [ABSTRACT FROM AUTHOR]

Objective: To investigate the effectiveness of ultrasound stimulation for neural regulation from the aspects of behavioral pathology and neurobiochemistry by using low intensity focused ultrasound to stimulate the nucleus accumbens of normal mice. Methods: 100 C57BL/6 mice were randomly divided into experimental group and control group with 50 mice in each group. The control group was given sham stimulation, and the experimental group was given transcranial low-intensity focused ultrasound to stimulate the NAc, twice a day, 10 min each time, for 7 consecutive days. After the intervention, 30 mice were randomly assigned to behavioral assessment (forced swimming, open field, and water maze), 10 mice were assigned to electron microscopy (EM), and 10 mice were assigned to neurotransmitter test.The depression, anxiety and learning and memory ability of the mice were evaluated by forced swimming, open field and water maze tests.The ultrastructural changes of neurons in the NAcof mice were observed by transmission electron microscopy. The contents of monoamine neurotransmitters (norepinephrine, dopamine, 5-hydroxytryptamine) in NAc of mice were determined by ELISA. Results: 1. Behavioral evaluation results：Compared with the control group, the immobile time in the ultrasonic stimulation group was significantly longer (P < 0.01), the total distance travelled, the average speed travelled, the distancetravelled of the central area, the time of the central area and the number of exits from the central area in the open field all decreased significantly (P < 0.05, P < 0.01), In the water maze experiment, the avoidance latency time was significantly longer, the number of crossing the platform was significantly reduced, and the residence time in the target quadrant was significantly shorter (P < 0.05, P < 0.01). 2. Electron microscopy results：The ultrastructure of NAc neurons in the control group was basically normal. In the ultrasound stimulation group, the neurons were swelling, nerve fiber dissolution and necrosis, mitochondrial vacuolation, endoplasmic reticulum dilation, and intracytoplasmic organelles were reduced or disappeared.3. Measurement results of neurotransmitters：Compared with the control group, the contents of NAc monoamine neurotransmitters NE, DA and 5-HT were significantly decreased in the ultrasonic stimulation group (P < 0.05). Conclusion: Low intensity focused ultrasound can induce inhibitory neuroregulation in mice, and cause morphological and neurobiochemical changes in NAC neurons, which may be one of the mechanisms of ultrasound neuromodulation. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Kunming Medical University / Kunming Yike Daxue Xuebao is the property of Kunming Medical 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.)

Microwave ablation，as a thermal ablation technique， can directly lead to coagulative necrosis and irreversible damage of neoplasm，and induce specific antitumor immune response to damage the neoplasm. Combined immunotherapy can further enhance the antitumor immune response induced by microwave ablation， thus reducing tumor recurrence and metastasis and improving the survival rate of the patients. This paper briefly introduced the mechanism of the immune response induced by microwave ablation， and summarized the application and prospect of microwave ablation combined with immunotherapy. [ABSTRACT FROM AUTHOR]

Copyright of Nonferrous Metals Engineering is the property of Beijing Research Institute of Mining & Metallurgy Technology Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Computer Engineering & Science / Jisuanji Gongcheng yu Kexue is the property of Computer Engineering & 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.)

Copyright of Journal of Kunming Medical University / Kunming Yike Daxue Xuebao is the property of Kunming Medical 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.)

Objective To explore the influence factors of International HIV-Associated Dementia Scale ( IHDS) among the minority AIDS patients with antiretroviral therapy and to provide basic data for HIV/AIDS intervention. Methods 200 patients were selected in human immunodeficiency virus(HIV) positive patients for antiretroviral therapy and aged<60 years from November 2015 to November 2016 in the Third people's Hospital of Kunming City and examined with IHDS. Results The average IHDS score was(8.12 ± 1.93) among the clients. The score of the clients of younger (≤50 years) was higher than older (51-60 years) (8.81 ± 1.82 vs (8.10 ± 2.09)； P= 2. 470， P= 0.010. The Han patients' score was higher than that of other ethnical patients (9.43 ± 1.64) vs (8.89 ± 1.77)；P=－9.310，0.038. The HIV/AIDS with the education level of under primary school had a lower score than those with the other level education (7.21 ± 1.25)vs (9.55 ± 1.47)； P=－7.841)， =0.001. The clients with alcohol drinking showed lower IHDS core than those without history of alcohol drinking ( 8.36 ± 1.48) vs (9.35 ± 1.67)； =3.125， P= 0.027. According to multivariate logistic regression analysis， it was indicated that the age and the amount of alcohol consumption were negatively associated with the IHDS score among the patients，nevertheless the education level was positively associated with it， the time of antiviral treatment of the clients was not associated with it. Conclusion The age， culture and drinking status of the patients have a great influence on the score of IHDS， Antiviral treatment time has little effect on the score. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Kunming Medical University / Kunming Yike Daxue Xuebao is the property of Kunming Medical 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.)