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In order to prevent COVID-19 from spreading, it is necessary to maintain a certain social security distance while wearing a mask. Because the existing target detection algorithms have problems such as poor real-time performance, low accuracy and unable to detect small scale, an improved algorithm DPPY （dilated pyramid-pooling with YOLOv3） based on YOLOv3（You Only Look Once version 3） was proposed. Firstly, the dilated convolution was used to participate in the core image processing structure of YOLOv3, and then a dense connection network was introduced to further merge the connections between different layers. On this basis, the spatial pyramid structure was imitated to deal with the size of the input data, and finally these processing results were better correlated with the objects to be tracked and the front and back positions of each other. The Kalman filter tool was selected for better processing. If the pedestrians are too close to each other, the warning will be issued in red to better remind the relevant personnel to pay attention. The results show that DPPY algorithm has faster detection speed and higher detection accuracy than traditional YOLOv3 algorithm. The detection speed reaches 34 frames per second, the average precision （AP） is increased by 9.1%, and the mean average precision （mAP） is increased by 7.8%, 8.2%, and 8.9% in large, medium and tiny target detection, respectively. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Bohai University (Philosophy & Social Science Edition) / Bohai Daxue Xuebao (Zhexue Shehuikexue Ban) is the property of Bohai Daxue 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 Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board 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 observe the protective effect of erythropoietin (EPO) on rats with hypoxic-ischemic brain injury (HIBD) and to explore its mechanism. Methods A total of 120 Wistar rats in 7-day-old were selected and randomly divided into three groups (n=40): sham operation group (control group), HIBD group and EPO treatment group. After HIBD model was established, EPO (5 000 IU/kg) was injected into rats of the EPO treatment group; while in the HIBD group, the equal volume normal saline was injected. Rats were killed at 6, 12, 24, 48 and 72 h, 8 rats at each time point per group. Then the expression levels of Fas/FasL mRNA and protein in the brain tissues were detected by real-time PCR and Western blotting, respectively. Results In HIBD group, Fas mRNA expression was observed at 6 h, increased rapidly and reached the peak at 12 h, then decreased after 24 h; in EPO treatment group, the expression of Fas mRNA was lower than that in HIBD group at each time point, and the difference was significant at time points of 12, 24 and 48 h (all P<0.05). Similarly, FasL mRNA was increased obviously from 6 h to 24 h, and reached the peak at 24 h, and then decreased gradually, the FasL mRNA level was significantly decreased in EPO treatment group as compared with that of the HIBD group at 6, 12, 24 and 48 h (all P<0.05). On the protein level, the Fas and FasL in the control group was very low; and there was a changing trend in the HIBD group, which rose first and then fell; the Fas protein expression at 24 and 48 h, and FasL protein expression at all the time points in the EPO treatment group was significantly decreased (all P<0.05). Conclusion EPO could alleviate the damage of HIBD on neurons in the brain tissue and have an effective protective effect, whose mechanism might be that the apoptosis of neuronal cells are inhibited through the down-regulation of Fas/FasL signal pathway in the HIBD brain tissues. [ABSTRACT FROM AUTHOR]

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.)

Biogeography-based optimization (BBO) was used to solve numerical integration. Firstly, the principle of BBO algorithm was introduced, habitat suitability index and suitability index variables were defined, and then mathematical model of migration and mutation operation was given. Secondly, BBO was used to optimize unequal node points in the integral interval, then a more precise integral result was obtained. Finally, simulation was carried out by Matlab software. The calculation results of typical numerical integral function showed that numerical integration method by BBO algorithm is better than those by PSO algorithm, trapezoidal method and Simpon method. The method is with the advantage of high precision and good adaptability. [ABSTRACT FROM AUTHOR]

16S rRNA sequencing technology was used to detect the intestinal flora of the research subjects, explore the intestinal flora characteristics and its correlation with Clinical biochemical index in patients wihe type 2 diabetic foot, and provide a new theoretical basis for the treatment of diabetic foot based on intestinal flora. The research objects were divided into three groups: diabetic foot group (A, n=32), diabetic group (B, n=32), and control group (C, n=31), and collected fecal samples and clinical biochemical indexes such as fasting blood glucose, HbA1c and inflammatory indexes. 16S rRNA sequencing technology was used to detect the intestinal flora of the objects and analyze the intestinal flora characteristics of patients with type 2 diabetic foot and its correlation with clinical biochemical indexes. 1. Compared with the diabetic group and control group, blood glucose, lipid levels and inflammatory indexes were significantly increased in the diabetic foot group (P<0.05). 2. The species richness of the diabetic foot group was significantly lower than that of the other two groups (P<0.05), and there were differences in alpha diversity and 茁 diversity among the three groups (P<0.05). 3. In the diabetic foot group, the abundance of harmful iconic species such as Vibrio (especially desulfovibrio), Coprococcus and anaerobic Claviculus increased compared with the other two groups, while the beneficial iconic species such as bifidobacterium, Akkermania, Coprobiotic and Lactobacillus decreased compared with the other two groups. 5.Spearman correlation analysis showed that Ruminococcus was negatively correlated with FPG, HbA1c, WBC, NE%, CRP and ESR (P<0.05), while Shigella was positively correlated with WBC, NE%, CRP and ESR (P<0.05). Desulfovibrio was positively correlated with FPG, HbA1c, TG, WBC, NE% and CRP (P<0.05). The intestinal flora in the diabetic foot group was more disordered, and the characteristics of the disordered intestinal flora were associated with more disordered glucose metabolism, lipid metabolism and more severe inflammation in the diabetic foot group. Therefore, intestinal flora disorders may be closely related to the occurrence and development of type 2 diabetic foot. [ABSTRACT FROM AUTHOR]

The accurate prediction of potato yield plays an important role in ensuring food security. In order to obtain potato yield information quickly and accurately, an unmanned aerial vehicle (UAV) with a visible light camera and a multispectral camera were used to collect RGB and multi- spectral images of potatoes at the bud flower, early flowering, full flowering and late flowering stages, and potato yields were recorded at harvest time. Based on the RGB and multispectral image features, correlation analysis was conducted of potato yield with RGB index and vegetation index, respectively, and the top five spectral indices with the highest correlation were selected as model input variables by combining the sample size. Finally, multiple linear regression (MLR) and random forest (RF) were used to construct estimation models for different growth stages and the whole growth period, and were compared to select the optimal model for potato yield estimation. The combination of RGB index and vegetation index improved the estimation effect of potato yield, and the inverse effect of the multiple linear regression model was better than that of the random forest model. The estimated effect of final yield from high to low was: full flowering > whole growth period > late flowering > early flowering > bud flower. The optimal model for estimating potato yield was the MLR model with the combination of RGB index and vegetation index as model input variables at full flowering. The test set R2 and RMSE were 0.77 and 0.64 kg/m2, respectively, whereas the validation set R2 and RMSE were 0.68 and 0.56 kg/m2, respectively. The results would provide technical support for accurate agriculture quantitative research. [ABSTRACT FROM AUTHOR]

Objective To identify changes in metabolites in patients with stable angina pectoris( SAP) with qi stagnation and blood stasis, explore the differential metabolites and metabolic pathways associated with SAP, and determine the therapeutic mechanisms associated with Suxiao Jiuxin Pills. Methods Patients and healthy recruited from September 2019 to September 2021 in Dongzhimen Hospital and other departments. The experimental group included 30 SAP patients with qi stagnation and blood stasis, and the control group included 30 healthy individuals. Serum metabolomics analysis was performed on both groups using liquid chromatography / mass spectrometry ( LC / MS), and the VIP values of the first two principal components of the multivariate partial least squares-discriminant analysis model combined with a univariate analysis of difference fold-change and P values were used to screen differentially expressed metabolites. Metabolic pathway enrichment analysis of differential metabolites was performed using the Kyoto Encyclopedia of Genes and Genomes database. Results A total of 18 significant differential metabolites were identified in the experimental and control groups; the levels of 4-hydroxycinnamimide, biliverdin-Ⅸ-β, and 2-methylene glutamic acid were lower in SAP patients than in healthy individuals, and the L-carnitine, vitamin BT, agmatine, citraconic acid, guanine, and menthol levels were higher. Twenty-one significant differential metabolites were identified in the experimental group before and after the administration of Suxiao Jiuxin Pills. The levels of bacterial chlorophyll-a, sphingosine, 4-oxoretinol, ceramide, 1-methylguanine, and other metabolites decreased after administration, while those of 6-ketoprostaglandin E1, resin toxin, and prostaglandin G2 increased. The abnormal changes in differential metabolites suggest that numerous metabolic pathways are disordered in SAP patients, including amino acids, lipids, retinol, purines, porphyrins, chlorophyll, inflammatory mediator regulation of transient receptor potential channels, and serotonergic synapses. Conclusion There are significant differences in metabolites between patients with SAP with qi stagnation and blood stasis and healthy people, and Suxiao Jiuxin Pills have positive and negative effects on regulating serum metabolites in vivo, thus regulating intestinal flora, maintaining the normal intestinal barrier, improving blood lipid levels, increasing the stability of vascular endothelial function, reducing tissue cell inflammation response, and inducing antioxidant effects. [ABSTRACT FROM AUTHOR]

目的探讨＂自主学习理论＂指导下的小组合作式学习在社区护理教学中的应用和效果。方法以该校2014级三年制高职护生社区护理方向班38名学生为研究对象,对学生进行分组并布置小组学习任务,学生以小组合作式学习方法开展自主学习,完成学习任务。课程结束后,自制问卷对教学效果进行评价。结果学生对教学时间的安排、教学内容的选取、教学方法的应用、实践基地的条件、专兼职教师的水平及课程评价方式满意度均在80.0%以上,认为开展小组合作式学习有利于提高专业知识和技能、沟通能力、团队协作能力、自主学习能力、解决问题的能力和综合素质。结论基于＂自主学习理论＂的小组合作式学习能增强学生的学习兴趣,提高学生的综合能力,提升社区护理的教学效果。 [ABSTRACT FROM AUTHOR]

目的 探讨颈总动脉血流动力学参数判断颈内动脉狭窄程度的价值。 方法 选择单侧颈内动脉中度及 以上狭窄或闭塞、对侧同名动脉无狭窄或轻度狭窄者255例，根据颈内动脉狭窄程度分为颈内动脉中度狭窄98例 (中度组）、重度狭窄89例（重度组）、闭塞68例（闭塞组）。分别测量各组颈总动脉收缩期血流峰值（PSV)、舒张末 期血流速度（EDV)、阻力指数（RI)、血管内径（D)、血流量（BFV)，并分析各指标与颈内动脉狭窄程度的关系。 结果 重度组和闭塞组患侧颈总动脉PSV、EDV、BFV明显低于同组健侧颈总动脉，RI明显高于同组健侧颈总动脉 (P均<0.05)。重度组和闭塞组患侧颈总动脉PSV、EDV、BFV明显低于中度组患侧颈总动脉，RI明显高于中度组 患侧颈总动脉（P均<0.05)。相关分析显示，颈内动脉狭窄程度与颈总动脉EDV、BFV呈负相关关系（r 分别为 -0.893、-0.723，P均<0.01)，与颈总动脉RI呈正相关关系（r=0.853，P <0.05)，与颈总动脉PSV、D无明显相 关性(r 分别为0.536、0.324，P均>0.05)。 结论 颈总动脉EDV、BFV可用于评价颈内动脉狭窄程度，尤其是颈内 动脉闭塞。 [ABSTRACT FROM AUTHOR]

Copyright of Shandong Medical Journal is the property of Shandong Medical Health Newspapers 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 Analysis the effect of suppressing thyroid carcinoma metastasis process of using total resection of thyroid contrast and half resection. Methods: Selected 90 cases of patients with thyroid cancer in our hospital, for all patients received thyroid resection or subtotal resection, all at the same time using I131 and thyroid hormone suppression therapy as auxiliary treatment, and follow-up for all patients. Results: No statistical difference was found in the bleeding amount, laryngeal recurrent nerve exposure rate between two groups of patients (P>0.05), the incision and operation time in observation group were significantly longer than those of the control group (P<0.01). the parathyroid gland show rate was higher than that in the control group (P<0.01), the temporary and permanent laryngeal recurrent nerve injury, temporary and permanent parathyroid function showed no significant difference between two groups (P>0.05). Recurrence was found in 6 cases of the control group, the recurrence rate was 13.33% (6/45), none was found in the observation group, the postoperative recurrence rate was significantly higher in the control group than that of the observation gr oup (P<0.05). Conclusion: The application of total resection of thyroid gland was better than half resection in the treatment of thyroid carcinoma, which could effectively reduce the postoperative recurrence. [ABSTRACT FROM AUTHOR]

Copyright of Practical Pharmacy & Clinical Remedies is the property of Editorial Department of Practical Pharmacy & Clinical Remedies 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.)

Obejective: To explore the clinical efficacy and safety of hollow screw tension band steel wire for internal fixation in the treatment of patellar fracture patients. Methods: 150 cases of patellar fracture in our hospital were randomly divided into the experimental group and control group, with 75 cases in each group. The patients in the control group underwent cerclage wire fixation, while patients in the experimental group were treated with hollow screw tension band steel wire internal fixation. After operation, the joint function exercise was performed regularly, and the regular patch test was performed to prevent the complications. The fracture healing time, operation time, the excellent rate of clinical treatment and the incidence rate of complications of two groups were observed and compared. Results: Compared with the control group, the fracture healing time was shorter, the operation time was longer, the effective rate was higher, rate of complications was lower of patients in the experimental group (P<0.05). Conclusions: Compared with cerclage wire fixation, hollow screw tension band steel wire had higher clinical efficacy and safety in the treatment of patellar fracture. [ABSTRACT FROM AUTHOR]

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.)

目的　应用ＦＲＡＸ软件预测40～90岁糖尿病、慢性肾功能不全患者10年内骨质疏松性骨折及髋部骨折 风险。方法　选择2型糖尿病患者184例为糖尿病组，慢性肾功能不全尿毒症期患者140例为肾功能不全组，按 性别、年龄配对，招募相同地域的社区居民276例为对照组。收集一般临床资料及骨折危险因素(体质量指数、糖 尿病史、高血压病史、肌酐、尿素氮、吸烟史、饮酒史、既往脆性骨折史、父母髋骨骨折史、是否服用影响骨代谢药物、 是否患有影响骨代谢的疾病等)，采用ＦＲＡＸ中国模式分别预测3组受试者10年内骨质疏松性骨折及髋部骨折概 率。结果　3组骨质疏松性骨折及髋部骨折概率差异均无统计学意义。多元回归分析提示：在对照组，年龄与骨质 疏松性骨折概率呈正相关(Ｐ<0.01)，与髋部骨折概率呈正相关(Ｒ分别为2.009、1.355，Ｐ均<0.01)；体质量指 数与骨质疏松性骨折概率、髋部骨折概率呈负相关(Ｒ分别为-1.133、-1.522，Ｐ<0.05或<0.01)，女性相较于男 性的骨质疏松性骨折风险(Ｒ=24.173Ｐ<0.01)、髋部骨折风险(Ｒ=10.348Ｐ<0.01)均更高。在肾功能不全组， 年龄与患者骨质疏松性骨折概率、髋部骨折概率呈正相关(Ｒ分别为1.367、1.048，Ｐ均<0.01)；体质量指数与患 者骨质疏松性骨折概率、髋部骨折概率呈负相关(Ｒ分别为-1.659、-1.692，Ｐ均<0.01)，女性相较于男性的骨质 疏松性骨折(Ｒ=27.451，Ｐ<0.01)、髋部骨折概率(Ｒ=13.813，Ｐ<0.01)风险均更高。在糖尿病组，年龄与骨质疏 松性骨折概率、髋部骨折概率呈正相关(Ｒ分别为1.330、0.955，Ｐ均<0.01)；女性相较于男性的骨质疏松性骨折 风险(Ｒ=22.711，Ｐ<0.01)、髋部骨折风险(Ｒ=13.813，Ｐ<0.05)均更高。体质量指数与骨质疏松性骨折及髋骨 骨折无明显相关性(Ｐ均!0.05)。结论　与正常健康人相比，糖尿病、慢性肾功能不全患者10年内骨质疏松性 骨折及髋部骨折概率并未增加，患者年龄与骨折风险呈正相关，且女性发生骨折风险较男性偏高。肾功能不全患 者体质量指数与骨折风险呈负相关。 [ABSTRACT FROM AUTHOR]

目的　观察椎动脉颅内近远段粥样硬化狭窄患者的后循环缺血梗死区域、临床症状及伴发脑动脉狭窄 是否有不同。方法　单侧椎动脉颅内段粥样硬化性狭窄≥５０％的后循环缺血患者１３４例，根据椎动脉颅内段狭窄 部位不同分为近段组和远段组，对比分析两组的后循环缺血梗死区域、临床症状及伴发脑动脉狭窄情况。结果　 近段组７４例、远段组６０例。近段组、远段组多发梗死者分别占６３．０％、３３．３％，两组相比，Ｐ＜０．０５。近段组、远段 组临床表现为头痛者分别占１６．２％、３．３％，临床表现为偏瘫者分别占２１．６％、４０．０％，两组相比，Ｐ均＜０．０５。近 段组、远段组伴发椎基底动脉狭窄者分别占２．７％、２６．７％，两组相比，Ｐ＜０．０１。结果　椎动脉颅内近远段粥样硬 化狭窄患者的后循环缺血区域、临床症状及伴发脑动脉狭窄有不同，椎动脉颅内段近段狭窄患者多发梗死及头痛 较远段狭窄患者多见，而远段狭窄患者伴发基底动脉狭窄及偏瘫较近段狭窄患者多见。 [ABSTRACT FROM AUTHOR]

OBJECTIVE: To investigate the application status of cardio-cerebrovascular traditional Chinese medicine (TCM) injections in outpatient department of Nanjing the First Hospital (hereinafter referred to as "our hospital") in2015, so as to provide reference for the rational application of cardio-cerebrovascular TCM injections in our hospital. METHODS: According to the data from hospital information system (HIS), statistical analysis was conducted on the application of cardio-cerebrovascular TCM injections in terms of consumption sum, defined daily dose system (DDDs), defined daily cost (DDC) and the ranking in our hospital in 2015. RESULTS: In 2015, the consumption sum of cardio-cerebrovascular TCM injections was 2. 7118 million yuan, accounting for 85. 66% of the total consumption sum 3. 1657 million yuan. There were certain differences in the consumption sum of each quarter, the third quarter was the minimum and the fourth quarter was the maximum,coinciding with the characteristics of cardio-cerebrovascular disease with high incidence in winter while with low incidence in summer. The top three drugs ranked by consumption sum and DDDs were respectively Shuxuetong injections, Xueshuantong injections and Shuxuening injections. The majority of ranking ratio were greater than or equal to 1. CONCLUSIONS: The clinical application of cardio-cerebrovascular TCM injections in our hospital is wide, stable and rational, which shows a good use prospect. However, it is still important and valuable to promote the rational standard application of TCM injections in clinic. [ABSTRACT FROM AUTHOR]

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.)