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Birthing ball on promoting cervical ripening and its influence on the labor process and the neonatal blood gas index

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World Journal of Clinical Cases 2021年第36期9卷 11330-11337页

作者： Hai-Chuan Shen Huan Wang Bo Sun lan-Zhi jiang Qian Meng Obstetrical Department Lianyungang Maternal and Child Health HospitalLianyungang 222000Jiangsu ProvinceChina

BACKGROUND Term pregnancy-induced labor refers to the use of artificial methods to induce uterine contractions and terminate pregnancy after 37 *** is a common method to prevent overdue pregnancy and to deal with high-risk *** addition,it can alleviate maternal complications and cause the fetus to leave the adverse intrauterine environment early,which is beneficial to the outcome of *** To explore the effect of a birthing ball on labor by inducing cervical ripening and its influence on labor and the neonatal blood gas *** Twenty-two women who were scheduled to undergo labor induction and delivery in the obstetrics department of our hospital were randomly divided into two groups:the delivery ball group(childbirth ball combined with COOK balloon induction)and the conventional group(COOK balloon induction alone).The cervical Bishop score before and after intervention,duration of labor at each stage,mode of delivery,neonatal umbilical venous blood pH,oxygen partial pressure(PO_(2)),carbon dioxide partial pressure(PCO_(2)),and the 1-min Apgar score were *** After the intervention,the cervical Bishop score of the delivery ball group(7.84±1.52)was significantly higher than that of the conventional group(7.32±1.29)(P0.05).There was no significant difference in the pH,PO_(2),and PCO_(2) values of newborns between the delivery ball gro

关键词： Childbirth ball Induction of labor Promotion of cervical ripening Labor Blood gas index COOK balloon

Critical equation of seedling block falling off in transplanting process and the optimization experiment of rape blanket seedling transplanter

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International Journal of Agricultural and Biological Engineering 2019年第5期12卷 87-96页

作者： lan jiang Chongyou Wu Qing Tang Min Zhang Gang Wang Jun Wu Nanjing Research Institute for Agricultural Mechanization Ministry of Agriculture and Rural AffairsNanjing 210014China

Considering both high efficiency and high seedling standing quality is a significant objective for crop mechanized *** blanket seedling transplanting is an innovative and efficient transplanting ***,falling off phenomenon has become a common problem facing rape blanket seedling transplanting fields that causes seedling standing quality decrease and restricts crop *** this study,the rape blanket seedling of Ningza-1838 varieties and 35 d of seedling age was taken as the research *** critical falling off equations of seedling was established by dynamic *** factors affecting seedling falling off were *** critical value of each factor was calculated which were as follows:the rotation speed of the planting mechanism was 24.6 rad/s,the substrate moisture content was 50.4%and the longitudinal picking seedling quantity was 14.7 *** the seedling falling off rate as evaluation index,the measured critical value of seedling falling off was determined by high speed photography *** the condition that substrate moisture content was 55%and the longitudinal seedling quantity was 15 mm,the seedling falling off rate sharply increased when the transplanting mechanism rotation speed was increased from 24 rad/s to 26 rad/*** the condition that the rotation speed was 22 rad/s and the longitudinal picking seedling quantity was 15 mm,the seedling falling off rate rapidly decreased when the moisture content was increased from 47%to 53%.When moisture content exceeded 53%,this exhibited no obvious *** the condition that the moisture content was 50%and the rotation speed was 22 rad/s,the seedling falling off rate swiftly raised when the longitudinal picking seedling quantity was increased from 14 mm to 17 *** experimental results showed that the seedling falling off rate increased significantly near the critical *** experimental results showed that the seedling falling off rate changed signific

关键词： rape blanket seedling transplanter planting mechanism seedling falling off

Finite element analysis of stress distribution of obturator prostheses for acquired unilateral maxillary defects

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Journal of Central South University of Technology 2005年第Z1期12卷 365-368页

作者： FENG Yun-zhi FENG Hai-lan WU Han-jiang Department of Stomatology the Second Xiangya Hospital Central South University Changsha 410011 China Department of Prosthodontics School of Stomatology Peking University Beijing 100081 China Department of Stomatology the Second Xiangya Hospital Central South University Changsha 410011 China

Objective To assess stresses produced by different obturator prostheses. Methods Three-dimensional finite clement models of unilateral maxillary defects rehabilitated with different obturators were constructed. The different stresses were analyzed by three-dimensional finite element method under different load angle. Results The Von Mises stress values obtained for the remaining tissues adjacent to defect cavity were higher when rehabilitated by inferior hollow obturator in comparison with by superior hollow obturator. The maximum of Von Mises were higher when rehabilitated by resilient hollow obturator than by rigid hollow obturator. It was also observed that in the rigid type stress distribution contours formed in the remaining tissues adjacent to defect cavity, while in resilient hollow obturator prostheses the stress distributed mainly in the prosthesis itself. The oblique load shows the most maximum of Von Mises among all types of obturator prostheses. Conclusions A high lateral wall of an obturator may be more better in preserving the remaining structures than a shorter prosthesis lateral wall. A soft liner may be incorporated to reduce the pain of the residual maxillary structures and mucosa. When load on defect, higher stress would be generated to the residual maxillary structures. The adjustment of occlusual relationship is very important.

关键词： maxillary defect obturator prosthesis 3-dimention finite element stress

On Ordered Ideals in Ordered Semirings

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Journal of Mathematical Research and Exposition 2011年第6期31卷 989-996页

作者： Ai Ping GAN Yang lan jiang Department of Mathematics Jiangxi Normal University Jiangxi 330022 Po R. China jiangxi Police College Jiangxi 330103 P. R. China

An ordered semiring is a semiring S equipped with a partial order ≤ such that the operations are monotonic and constant 0 is the least element of *** this paper,several notions,for example,ordered ideal,minimal ideal,and maximal ideal of an ordered semiring,simple ordered semirings,etc.,are *** properties of them are given and characterizations for minimal ideals are ***,the matrix semiring over an ordered semiring is *** results obtained in this paper are analogous to the corresponding ones on ordered semigroups,and on the matrix semiring over a semiring.

关键词： ordered semiring ordered ideal simple semiring minimal ideal matrix

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一种无人机自组网中基于身份加密的认证方案

计算机技术与发展 2024年第9期34卷 82-87页

作者：席铭辉郜帅兰江雨侯心迪北京交通大学电子信息工程学院北京100044

随着无线通信技术的日益发展,无人机自组网在救援、巡逻和侦查等领域都得到了广泛运用。然而,由于无人机自组网网络结构灵活多变且缺乏基础设施的支持,该网络面临严重的身份安全威胁。尽管当前存在各种无第三方安全方案,但这些方案存在... 详细信息

随着无线通信技术的日益发展,无人机自组网在救援、巡逻和侦查等领域都得到了广泛运用。然而,由于无人机自组网网络结构灵活多变且缺乏基础设施的支持,该网络面临严重的身份安全威胁。尽管当前存在各种无第三方安全方案,但这些方案存在性能低下和安全性不足等问题,难以在无人机自组网上部署。针对这些问题,该文提出一种基于IBE的认证方案,将实体身份信息作为公钥,实体无需存储额外的公钥信息,降低了密钥存储开销。同时,该方案支持批量认证,极大地提升了认证效率。此外,通过引入哈希链技术,有效地保留和复用无人机首次认证后的状态信息,降低了后续无人机的认证成本。通过形式化的安全分析,证明该方法能抵御身份伪造、中间人等恶意攻击。相较于已有方案,该方案的计算和存储开销更低。

关键词：基于身份加密哈希链认证安全无人机自组网

Repetitive magnetic stimulation affects the microenvironment of nerve regeneration and evoked potentials after spinal cord injury

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Neural Regeneration Research 2016年第5期11卷 816-822页

作者： Jin-lan jiang Xu-dong Guo Shu-quan Zhang Xin-gang Wang Shi-feng Wu Scientific Research Center China-Japan Union Hospital Jilin University Department of Orthopedics China-Japan Union Hospital Jilin University Department of Cardiovascular Medicine China-Japan Union Hospital Jilin University Department of Orthopedics Tianjin Nankai Hospital Department of Burns and Plastic Surgery China-Japan Union Hospital Jilin University

Repetitive magnetic stimulation has been shown to alter local blood flow of the brain, excite the corticospinal tract and muscle, and induce motor function recovery. We established a rat model of acute spinal cord injury using the modified Allen＇s method. After 4 hours of injury, rat models received repetitive magnetic stimulation, with a stimulus intensity of 35% maximum output intensity, 5-Hz frequency, 5 seconds for each sequence, and an interval of 2 minutes. This was repeated for a total of 10 sequences, once a day, 5 days in a week, for 2 consecutive weeks. After repetitive magnetic stimulation, the number of apoptotic cells decreased, matrix metalloproteinase 9/2 gene and protein expression decreased, nestin expression increased, somatosensory and motor-evoked potentials recovered, and motor function recovered in the injured spinal cord. These findings confirm that repetitive magnetic stimulation of the spinal cord improved the microenvironment of neural regeneration, reduced neuronal apoptosis, and induced neuroprotective and repair effects on the injured spinal cord.

关键词： nerve regeneration spinal cord injury repetitive magnetic stimulation motor function rats rehabilitation plasticity regenerative microenvironment neural regeneration

胶体碳球制备新型Sn/Se共掺杂TiO_(2)及其光催化性能

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合成化学 2024年第4期32卷 339-344,351页

作者：邢方莉李娜娜陈润东蒋兰谢辉贵州师范大学化学与材料科学学院贵州贵阳550000

TiO_(2)的光催化性能改性是水污染治理和光催化领域研究的重点方向。为了增强TiO_(2)的光催化性能,以胶体碳球为模板,采用水热-煅烧法首次制备了TiO_(2)空心球、硒掺杂二氧化钛(Se-TiO_(2))空心球和锡/硒共掺杂二氧化钛(Sn/Se-TiO_(2))... 详细信息

TiO_(2)的光催化性能改性是水污染治理和光催化领域研究的重点方向。为了增强TiO_(2)的光催化性能,以胶体碳球为模板,采用水热-煅烧法首次制备了TiO_(2)空心球、硒掺杂二氧化钛(Se-TiO_(2))空心球和锡/硒共掺杂二氧化钛(Sn/Se-TiO_(2))空心球。同时,对Sn/Se-TiO_(2)空心球的形貌、结构以及元素组成进行了表征,并以罗丹明B为模拟污染物,评价了样品的光催化性能。结果表明:TiO_(2)为单一的锐钛矿相,Sn和Se成功地掺杂进入了TiO_(2)晶格中;Sn/Se共掺杂形成了缺陷能级,降低了禁带宽度和电子-空穴对的复合几率,提高了可见光的响应范围。当Se掺杂2.0%(物质的量分数,下同),Sn掺杂0.5%时,样品光催化性能最好,去除率为76.92%。同等条件下空心球的光催化去除率:TiO_(2)

关键词：二氧化钛空心球光催化共掺杂去除率

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术前NLR对急性大脑中动脉闭塞血管内治疗患者不良预后的预测价值

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中国实用神经疾病杂志 2024年第6期27卷 661-667页

作者：孙梦飞吴宇鹏傅新民蒋兰张洋蚌埠医学院研究生院安徽蚌埠233000 徐州市中心医院江苏徐州221009 徐州医科大学徐州临床学院江苏徐州221004

目的探讨急性大脑中动脉(MCA)闭塞患者在接受血管内治疗(EVT)前,术前外周血中性粒细胞与淋巴细胞计数比值(NLR)与发病后90 d不良预后之间的关系,并评估其预测价值。方法收集2021-01—2023-07于徐州市中心医院高级卒中中心接受血管内治... 详细信息

目的探讨急性大脑中动脉(MCA)闭塞患者在接受血管内治疗(EVT)前,术前外周血中性粒细胞与淋巴细胞计数比值(NLR)与发病后90 d不良预后之间的关系,并评估其预测价值。方法收集2021-01—2023-07于徐州市中心医院高级卒中中心接受血管内治疗的急性MCA闭塞患者的临床资料。根据患者发病后90 d预后情况分为良好预后组和不良预后组。采用单因素及多因素Logistic回归分析探讨各因素与不良预后的关系,采用线性回归分析探讨术前NLR与各因素间的相关性,同时绘制预后情况的受试者操作特征(ROC)曲线,并计算曲线下面积(AUC)和最佳临界值。结果最终纳入急性MCA闭塞血管内治疗患者97例,良好预后组32例(32.99%),不良预后组65例(67.01%)。单因素分析显示,在年龄、术前NLR、术前ASPECT评分及侧支循环情况方面,不良预后组低于良好预后组(分别为P=0.007、0.022、0.05)。多元线性回归分析显示年龄、术前NIHSS评分、术前舒张压可影响术前NLR大小(分别为P=0.007、0.009、0.011)。多因素Logistic回归分析显示年龄(OR=1.055,95%CI:1.008~1.105)、术前ASPECT评分(OR=0.562,95%CI:0.366~0.861)、术前NLR(OR=1.17,95%CI:1.003~1.367)是急性大脑中动脉闭塞血管内治疗患者不良预后的独立危险因素(分别为P=0.022、0.008、0.046)。术前NLR预测急性MCA血管内治疗患者发病后90 d不良预后的AUC为0.644(95%CI:0.526~0.761),最佳临界值为3.255。结论术前NLR与急性MCA闭塞EVT治疗患者的不良预后存在相关性,且可作为预测此类患者不良预后的指标。

关键词：大脑中动脉闭塞脑梗死血管内治疗中性粒细胞与淋巴细胞比值预后

Protective,controlled-release and embedding mechanism of porcine plasma protein cold-set gel on quercetin:An effective carrier of hydrophobic compounds

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Food Bioscience 2022年第3期47卷 625-634页

作者： jiang-lan Yuan Chang-sheng Ding Cheng-liang Li Yu Zhang Xu Kang National “111” Center for Cellular Regulation and Molecular Pharmaceutics Key Laboratory of Fermentation Engineering (Ministry of Education)College of Bioengineering and FoodHubei University of TechnologyWuhan430068China

Protection and embedding of hydrophobic bioactive compounds using protein hydrogels are emerging focus during the latest *** present study,we fabricated the porcine plasma protein(PPP)cold-set gel by microbial transglutaminase(MTGase)and glucono-δ-lactone(GDL)as coupling *** a result,the embedding,protection and controlled-release effect of the gel on vulnerable hydrophobic bioactive components(quercetin(Que)as representative)with proposed molecular mechanisms were investigated in *** results showed that high concentration of Que(5 mmol/L)could be loaded with PPP cold-set gel and embedding efficiency(EE)was over 98%.Compared with free Que,the embedded one exhibited significantly higher thermostability,photochemical stability and storage stability(P<0.05).In addition,the gel loaded with 5 mmol L^(−1) of Que had higher swelling potency under gastric(low pH)media and controlled release performance following simulated intestinal digestive *** holding capacity(WHC)implied that free water molecules played less role in the retention ability of Que in fabricated gel ***-assisted structural characterization proved that Que was efficiently embedded mainly by generating PPP-Que complex through hydrogen bond and van der Waals force,and the binding site was mainly near Trp *** work gave novel insight into the potential use of PPP cold-set gel as an excellent carrier towards protection and selective delivery of vulnerable small hydrophobic nutraceutical compounds.

关键词： Porcine plasma protein Cold-set gel Quercetin Embedding Interaction Controlled-release