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[Objective]Taking Artemisia argyi leaves as the research object,in order to explore the optimal extraction process and antioxidant activities of polyphenols from Artemisia argyi. [Method]Single-factor test was used to investigate the influence of ethanol concentration,liquidmaterial ratio and ultrasonic extraction time on the extraction amount of Artemisia argyi polyphenols. On this basis,the extraction process was optimized by Box-Behnken response surface analysis,and the antioxidant activity of polyphenols was evaluated by the ability to remove DPPH free radicals and hydroxyl radicals. [Result]The optimal process was 77% ethanol concentration,material-liquid ratio 24 ∶ 1 (mL ∶ g) and the extraction time 53 min. Under the above conditions,the extraction amount of polyphenols was 41. 31 mg / g. Antioxidant activity analysis showed that polyphenols had good antioxidant ability. The semi-inhibition concentrations ( IC50 ) of DPPH free radicals and hydroxyl radicals were 0. 050 4 and 0. 031 1 mg / mL respectively. [Conclusion]Using ultrasound assisted method,the extraction amount of Artemisia argyi polyphenols reached 41. 31 mg / g under the optimal extraction process conditions. The extracted Artemisia argyi polyphenols under these conditions had good antioxidant properties. This method was simple,easy to operate and had a high yield. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Hubei Open Vocational College is the property of Journal of Hubei Open Vocational College 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.)

针对利用灵活光网络（FlexO）技术实现超100 Gbit/s业务传输过程中存在的时钟数据恢复问题,文章基于锁相环频率合成器,设计实现了一种新型的超100 Gbit/s光转换单元（OTU）帧结构OTUCn到n个100 Gbit/s帧结构OTU4业务数据转变的时钟数据恢复方案,可以在OTU4业务频点的一定频偏内,迅速恢复客户时钟,并实现对OTU4业务数据的重定时。仿真和实测表明,该方案能够有效满足FlexO中的时钟恢复需求,实时恢复的客户侧时钟抖动均-6,并能确保多路重定时的OTU4业务数据持续稳定的向下一级传输。

Copyright of Journal of Anhui Agricultural Sciences is the property of Journal of Anhui Agricultural Sciences 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.)

目的评价贵州省妇幼保健机构儿童健康人力资源配置公平性, 预测2021--2025年资源变化趋势, 为优化 资源配置、增强儿童健康服务能力提供参考。方法 采用集聚度评价贵州省妇幼保健机构儿童健康人力资源配置 公平性, 运用卫生资源密度指数测算服务需求, 使用GM(1, 1)模型预测2021--2025年资源变化趋势。结果贵州 省每千名儿童拥有妇幼保健机构儿科医生0.091人、儿童保健人员0.092人。各市(州)儿童保健医生和护士缺乏 比例较大, 分别为65.16%和98.13%。黔中经济区儿童健康人力资源集聚水平较高, 少数民族地区人力资源集聚水 平较低。黔东南州和黔西南州人力资源集聚度均小于1.000,毕节市和黔西南州人力资源集聚度与人口集聚度的 比值均小于1.000o据预测, "十四五"期间贵州省儿科及儿童保健医护人员的年均增长率均在11.00%以上。2025 年, 贵州省每千名儿童拥有儿科医生0.170人、儿童保健人员0.165人, 较国家儿科医生发展新目标(1.120人)和 儿童保健人员配置标准(0.200人)分别有0.950人和0.035人的缺口。结论 贵州省妇幼保健机构儿科医生人均拥 有量不足, 需求缺口有待填补。儿童保健人员缺乏比例较大, 应加强配置并优化存量。儿童健康人力资源地区分 布不均衡, 应因地制宜完善区域资源发展规划。"十四五"期间, 儿童健康人力资源将持续增长, 应进一步加强人 才储备并完善人才培养模式. [ABSTRACT FROM AUTHOR]

Copyright of Advances in Water Science / Shuikexue Jinzhan is the property of Editorial Board of Advances in Water 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 Engineering Management & Technology Discussion 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 outcomes of non ⁃ obstructive azoospermia (NOA) patients with different etiologies undergoing microdissection testicular sperm extraction (micro ⁃ TESE) . Methods：A retrospective analysis was carried out in 1 355 patients who accepted micro⁃TESE in Shanghai General Hospital from March 2015 to January 2022. The etiology/risk factors of NOA patients included Klinefelter syndrome (KS), Y ⁃ chromosome AZFc deletion, cryptorchidism, mumps orchitis, chemoradiotherapy, varicocele, idiopathic etiology. The sperm retrieval rate (SRR) of patients in each group were analyzed, and the pregnancy outcomes of successful sperm retrieval in each group were compared. Results：The overall SRR was 26.2% (355/1 355) . The mumps orchitis group ranked the highest SRR of 75.9% (22/29), followed by cryptorchidism (70.5%, 43/61), Y⁃chromosome AZFc deletion (55.6%, 30/54), KS (47.6%, 71/149), idiopathic etiology (18.6%, 167/897), radiotherapy and chemotherapy (15.4%, 2/13), and varicocele was the lowest (13.2%, 20/152) . According to the clinical outcome, NOA patients were divided into a success group and a failure group. In idiopathic and chemoradiotherapy group, the levels of follicle⁃stimulating hormone (FSH) and luteinizing hormone (LH) in successful cases were significantly higher than those failed；In Y⁃chromosome AZFc deletion group, the levels of FSH was significantly lower than those failed；In mumps orchitis group, the volume of the testis in the success group was higher than those failed. In addition, we found that age can serve as an independent factor to predict sperm retrieval outcome in patients with idiopathic NOA, and the older had better sperm retrieval outcomes. After ICSI treatment, the pregnancy rate was 51.4% (200/389), and the live birth rate was 73.5% (147/200) . Conclusion：The SRR of NOA patients with different causes/risk factors are significantly different, which are important indicators affecting the outcome of micro⁃TESE. [ABSTRACT FROM AUTHOR]

Copyright of Advances in Water Science / Shuikexue Jinzhan is the property of Editorial Board of Advances in Water 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 Chinese Journal of Oncology is the property of Chinese Journal of Oncology / Zhonghua Zhongliu Zazhi 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 Journal of Oncology is the property of Chinese Journal of Oncology / Zhonghua Zhongliu Zazhi 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 Advances in New & Renewable Energy is the property of Editorial Office of Advances in New & Renewable Energy 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 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.)

Copyright of Chinese Journal of Oncology is the property of Chinese Journal of Oncology / Zhonghua Zhongliu Zazhi 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.)

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 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.)

To investigate the relationship between the blastomere integrity and reproductive outcome, the resumption of cleavage and reproductive outcome respectively, from the freeze-thawed embryo derived from testicular biopsy or testicular microsperm extraction. A retrospective analysis was performed of data from 658 patients who received frozen-thawed embryos transfer (FET). According to sperm source, these embryos were divided into 445 cycles of ejaculated sperm group (ICSI group) and 213 cycles of testicular biopsy or microdissection testicular sperm extraction (TESA group). When two embryos thawed, ICSI group was divided into three groups (A, B, C group) based on the number of integral embryos (0, 1, 2). Similarly, TESA group was also divided into D, E and F groups. ICSI group was divided into three groups (G, H, I group) according to the number of resumption of cleavages (0, 1, 2) after two embryo frozen-thawed. Similarly, TESA was also divided into J, K and L groups. The reproductive outcome were compared between the groups, respectively. ① The integrity rate, cleavage rate of embryos cultured in vitro within 18-20 h after thawing, implantation rate, clinical pregnancy rate, live birth rate, gestational age and birth weight were not significant difference between ICSI and TESA group (P>0.05). However, the early miscarriage rate in ICSI group was significantly higher than TESA group. ② There was no statistical difference in reproductive outcome mentioned above between group B and group C (P>0.05). However, the implantation rate, clinical pregnancy rate and live birth rate were significantly higher than group A (P<0.05). The reproductive outcome showed no statistical difference between three subgroups of TESA (P>0.05). There was no significant difference between ICSI and TESA groups (P>0.05). ③ The implantation rate, clinical pregnancy rate and ongoing pregnancy rate of group I were significantly higher than group H (P<0.05), and both groups were significantly higher than group G (P<0.05). The live birth rate was significantly higher in group I compared with group G and H (P<0.05). The implantation rate, clinical pregnancy rate, ongoing pregnancy rate and live birth rate of L group were significantly higher than group J (P<0.05). There was no significant difference between ICSI and TESA groups (P>0.05). Although the sperm quality of testicular biopsy or microdissection testicular sperm extraction was poor, the FET outcomes were not different from those embryos derived from ejaculated sperm once effective embryos were formed. Transferring at least one integral embryo had better reproductive outcomes than transferring two blastomere damaged embryos. Similarly, better reproductive outcomes was observed in transferring at least one cleavage embryo than two non-cleavage embryos. If there was neither integral embryo after thawing nor cleavage after overnight culture, it should be carefully considered whether to cancel the FET [ABSTRACT FROM AUTHOR]

A dextran nanogel (Dex NG) with cross-linked structure was prepared through a grafting copolymerization induced self-assembly (GISA) strategy using water-soluble polysaccharide dextran as the main component. GISA is a method that combines free radical grafting polymerization and self-assembly into one step, and can realize large-scale preparation of nanogels. By using cerium ammonium nitrate (CAN) to create free radicals on dextran, methyl acrylate (MA) was initiated to polymerize at the site of free radical to form a grafting copolymer, and a subsequent formation of nanogel was induced by hydrophobic force originated from the resulting MA. Finally, diallyl disulfide (DADS) was added as a cross-linker to stablize the structures. The high order self-assembled nano-aggregates (Con A-Dex NG) were fabricated by Dex NG and concanavalin A (Con A) on the basis of the specific recognition between Con A and the glucose unit in dextran. The particle size, structure and morphology of the self-assembled nano-aggregates were characterized by transmission electron microscopy (TEM), dynamic laser light scattering (DLS), Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance spectroscopy (NMR) and isothermal titration calorimetry (ITC). The mechanism of high order self-assembly was also discussed. In addition, the cytotoxicity of free Con A and Con A-Dex NG on A549 cell (human lung cancer cell) was investigated. The results showed that the size of Con A-dextran nano-aggregates was directly related to the mass ratio of dextran nanogel to Con A. Moreover, the cytotoxicity experiments demonstrated that free Con A could inhibit A549 cells, and its biological activity did not show obvious variations during the process of high order self-assembly. [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.)

Copyright of Electronic Components & Materials is the property of Electronic Components & Materials 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.)