检索结果-南通市图书馆

Dietary supplementation with N‑acetyl‑L‑cysteine ameliorates hyperactivated ERK signaling in the endometrium that is linked to poor pregnancy outcomes following ovarian stimulation in pigs

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2025年第1期16卷 167-181页

作者： Linghua Cheng Zhicheng shi Yuan Yue Yue Wang Yusheng Qin Wei Zhao Yupei Hu Qin Li min Guo Lei An Shumin Wang Jianhui Tian Frontiers Science Center for Molecular Design Breeding(MOE) State Key Laboratory of Animal Biotech BreedingKey Laboratory of Animal GeneticsBreeding and Reproduction of the Ministry of Agriculture and Rural AffairsNational Engineering Laboratory for Animal BreedingCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193People’s Republic of China

Background Exogenous gonadotropin-controlled ovarian stimulation is the critical step in animal reproductive management,such as pig,sheep,bovine and other *** helps synchronize ovulation or stimulate multiple ***,a number of evidence indicated an unexpected decrease in pregnancy outcomes following ovarian *** study aimed to explore the underlying mechanism of the pregnancy defect and develop a practical rescue *** Compared with those in the control group,gilts that underwent ovarian stimulation showed a decrease in pregnancy rate,farrowing rate,and total number of piglets *** gilts also showed an increase in estra-diol(E_(2))*** supraphysiologicalE_(2) level was correlated with the decrease in the number of piglets ***,we found that high levels ofE_(2) impair uterine receptivity,as shown by the overproliferation of endo-metrial epithelial *** vitro mechanistic studies demonstrated that high levels ofE_(2) hyperactivate FGF-FGFR-ERK signaling cascade in the uterine endometrium,and in turn induces overproliferation of endometrial epithelial *** note,N-acetyl-L-cysteine(NAC)supplementation effectively inhibits ERK hyperphosphorylation and ameliorates endometrial epithelial ***,in vivo experiments indicated that dietary NAC supplementa-tion,compared with ovarian stimulation group,improves the uterine receptivity in gilts,and significantly increases the pregnancy rate and total number of piglets *** Ovarian stimulation-induced supraphysiological levels ofE_(2) impairs uterine receptivity by hyperactivat-ing FGF-FGFR-ERK signaling cascade,thereby reducing pregnancy rate and litter *** NAC to a con-ventional diet for gilts ameliorates hyperactivated ERK signaling and improves uterine receptivity,thus rescuing adverse pregnancy outcomes following ovarian stimulation.

关键词： Estradiol Gonadotropin Implantation N-acetyl-L-cysteine Ovarian stimulation Uterine receptivity

水痘疫苗2剂接种程序对北京市朝阳区水痘发病的影响

在线全文

学校读者我要写书评

暂无评论

中国生物制品学杂志 2015年第11期28卷 1177-1179,1182页

作者：杨立清李丽张楠贾滨刘芳时念民北京市朝阳区疾病预防控制中心北京100021

目的分析水痘疫苗实行2剂接种程序对北京市朝阳区水痘发病的影响。方法实施2剂接种程序后,采用描述性流行病学方法,对2010~2014年北京市朝阳区水痘病例资料进行分析。结果 4~12岁儿童2013、2014年水痘发病率较2010、2011年下降了73.41%,... 详细信息

目的分析水痘疫苗实行2剂接种程序对北京市朝阳区水痘发病的影响。方法实施2剂接种程序后,采用描述性流行病学方法,对2010~2014年北京市朝阳区水痘病例资料进行分析。结果 4~12岁儿童2013、2014年水痘发病率较2010、2011年下降了73.41%,〈4岁和〉12岁人群发病率下降了18.75%;4~12岁儿童总发病构成比由2010、2011年的48.33%降至2013、2014年的29.09%;2014年全年疫苗销量85 752支,较2010、2011两年的平均销量增长了1.19倍,随疫苗销量上升,发病数呈下降趋势;2013、2014出现的水痘病例数较2010、2011年降低,暴发疫情数量下降;总体病例中有明确免疫史的已达50%以上,暴发疫情病例中突破病例占比高于普通病例。结论水痘疫苗采用2剂接种程序后,接种人群的总体发病大幅下降,免疫效果优于1剂接种程序。

关键词：水痘疫苗接种程序突破病例

2012年包头市疑似预防接种异常反应监测数据分析

在线全文

学校读者我要写书评

暂无评论

中国生物制品学杂志 2016年第4期29卷 399-402页

作者：侯飞李佳李海张娇丁雪娇时念民包头市疾病预防控制中心内蒙古包头014010 山西医科大学公共卫生学院山西太原030001 北京市朝阳区疾病预防控制中心北京100021

目的分析内蒙古包头市2012年疑似预防接种异常反应（adverse event following immunization,AEFI）监测数据,评价包头市AEFI监测系统运转情况。方法通过全国疑似预防接种异常反应信息管理系统,收集包头市2012年报告的AEFI个案,采用描述... 详细信息

目的分析内蒙古包头市2012年疑似预防接种异常反应（adverse event following immunization,AEFI）监测数据,评价包头市AEFI监测系统运转情况。方法通过全国疑似预防接种异常反应信息管理系统,收集包头市2012年报告的AEFI个案,采用描述性方法对相关指标进行流行病学分析。结果 2012年包头市共报告AEFI 53例,报告发生率为9.03/10万,所有区县均有报告;AEFI多发生在6-11月;男女AEFI发生比例为1.12∶1;

关键词：疑似预防接种异常反应监测

Evaluation of surgical strategy for low anterior resection syndrome using preoperative low anterior resection syndrome score in China

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Surgery 2025年第1期17卷 175-183页

作者： Yang-Tao Pan Yi-min Lv shi-Chao Zhou Dan-Yan Luo Hao Sun Wei-Feng Lao Wei Zhou Department of Colorectal Surgery Sir Run Shaw Hospital Affiliated with Zhejiang UniversityHangzhou 310016Zhejiang ProvinceChina School of Mathematics Nanjing Audit UniversityNanjing 211815Jiangsu ProvinceChina Department of Surgery Zhejiang Hospital of Traditional Chinese Medicine(Zhejiang University of Traditional Chinese Medicine First Affiliated Hospital)Hangzhou 310000Zhejiang ProvinceChina NBU Health Science Center Ningbo UniversityNingbo 315000Zhejiang ProvinceChina

BACKGROUND Despite improved survival rates in rectal cancer treatment,many patients experience low anterior resection syndrome(LARS).The preoperative LARS score(POLARS)aims to address the limitations of LARS assessment by predicting outcomes preoperatively to enhance surgical *** To investigate the predictive accuracy of POLARS in assessing the occurrence of *** This study enrolled a total of 335 patients who underwent laparoscopic or robotic low anal sphincter-preserving surgery for rectal *** were categorized into three groups according to their POLARS score:no LARS(score 0-20),minor LARS(score 21-29),and major LARS(score 30-42).The QLQ-C30/CR29 scores were compared among these groups,and the agreement between POLARS predictions and the actual LARS scores was *** The study population was divided into three groups:major LARS(n=51,27.42%),minor LARS(n=109,58.6%),and no LARS(n=26,13.98%).Significant differences in the QLQ-C30 scales of social function,diarrhea,and financial impact were detected between the no LARS and major LARS groups(Pminor LARS and major LARS groups(Pminor LARS groups(Pminor LARS and major LARS groups(P<0.05).The predictive precision for major LARS using the POLARS score was 82.35%(42/51),with a recall of 35.89%(42/117).The mean absolute error(MAE)between the POLARS score and the actual LARS score was 8.92±*** contrast,the XGBoost(extreme gradient boosting)model achieved a lower MAE of 6.29±4.77,with a precision of 84.39%and a recall of 74.05%for predicting major *** The POLARS score demonstrated effectiveness and precision in predicting major LARS,thereby providing valuable insights into postoperative symptoms and patient quality of ***,the XGBoost model exh

关键词： Low anterior resection syndrome Preoperative assessment Predictive Accuracy Quality of life Machine learning

大学生与务工人员服用口服重组B亚单位霍乱疫苗的安全性及效果分析

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中华医学杂志 2010年第3期90卷 192-195页

作者：时念民罗凤基李书明白云骅屈燕宋欣北京市朝阳区疾病预防控制中心 100021

目的评价北京奥运志愿者和奥运工地务工人员在服用国产口服重组B亚单位／菌体霍乱菌苗（可唯适）后的不良反应、免疫和流行病学效果。方法2008年6月，观察大学奥运志愿者服苗后不良反应发生率及疫苗保护率；用ELISA法检测2个奥运工地的... 详细信息

目的评价北京奥运志愿者和奥运工地务工人员在服用国产口服重组B亚单位／菌体霍乱菌苗（可唯适）后的不良反应、免疫和流行病学效果。方法2008年6月，观察大学奥运志愿者服苗后不良反应发生率及疫苗保护率；用ELISA法检测2个奥运工地的务工人员服苗前后不同时间抗霍乱毒素抗体（CT抗体），比较阳转率及抗体持久性。结果大学志愿者服苗后的总不良反应率为0．38％；不良反应主要是腹痛、腹泻等，均为轻度-过性反应；服苗志愿者急性腹泻发病率明显低于未服苗的志愿者，该疫苗的保护率是76．27％；务工人员服苗后抗CT抗体阳转率明显高于服苗前，服苗6个月后抗体水平有所下降。结论国产口服重组B亚单位霍乱疫苗在志愿者、务工人员中服用，有较好的安全性、免疫原性及群体保护效果。

关键词：霍乱疫苗腹泻免疫原性

国产EV71灭活疫苗上市后大人群接种安全性分析

在线全文

学校读者我要写书评

暂无评论

中国公共卫生 2019年第4期35卷 385-387页

作者：张文静时念民张彦利张馨月和彦苓白云骅包头医学院公共卫生学院内蒙古包头014040 北京市朝阳区疾病预防控制中心生物制品科

目的分析国产肠道病毒71型(EV71)灭活疫苗上市后在大人群(IV期临床试验)接种中的安全性,为国产EV71灭活疫苗的广泛接种提供参考。方法按自愿自费知情同意原则,在北京市朝阳区选取2016年8月—2017年12月按程序接种国产EV71疫苗的25 995名... 详细信息

目的分析国产肠道病毒71型(EV71)灭活疫苗上市后在大人群(IV期临床试验)接种中的安全性,为国产EV71灭活疫苗的广泛接种提供参考。方法按自愿自费知情同意原则,在北京市朝阳区选取2016年8月—2017年12月按程序接种国产EV71疫苗的25 995名6～71月龄常住健康婴幼儿作为观察对象,于受种婴幼儿上臂三角肌肌内注射,共免疫2剂次,观察受种婴幼儿每剂接种后30 min的即时反应,并通过接种医生电话访视或法定监护人收集受种婴幼儿每剂接种后30 d内的全身、局部和其他不良事件记录在《不良事件主动监测登记表》上,参照国家食品药品监督管理局关于《预防用疫苗临床试验不良事件分级标准指导原则》对注射部位红肿、注射部位硬结、发热进行分级,同时统计不良事件发生率。结果观察的25 995名婴幼儿共计接种国产EV71疫苗52 260剂次,接种共发生总不良事件1 730例次,发生率为3.31%。其中,全身、局部和其他不良事件分别为1 178、516和36例次,发生率分别为2.25%、0.99%和0.07%;在注射部位红肿、注射部位硬结、发热等不良事件中,1、2和3级不良事件分别为362、537和36例次,发生率分别为0.69%、1.03%和0.07%,未见≥4级及罕见和极罕见不良事件,所有不良事件均经药物或门诊治疗痊愈。结论国产EV71疫苗具有较好的安全性。

关键词：肠道病毒71型(EV71) 灭活疫苗大人群接种安全性

Adjusting *CO adsorption configuration over tandem trimetallic AuAgCu heterojunction boosts CO_(2) electroreduction to ethanol via asymmetric C–C coupling

在线全文

学校读者我要写书评

暂无评论

Science China Materials 2025年第1期68卷 173-179页

作者： Yongxia shi Junjun Li Zhiwen min Xinyi Wang Man Hou Hao Ma Zechao Zhuang Yuchen Qin Yuanmiao Sun Dingsheng Wang Zhicheng Zhang Key Laboratory of Organic Integrated Circuit Ministry of Education&Tianjin Key Laboratory of Molecular Optoelectronic SciencesDepartment of ChemistrySchool of ScienceTianjin UniversityTianjin 300072China Faculty of Materials Science and Energy Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China Department of Chemistry Tsinghua UniversityBeijing 100084China College of Sciences Henan Agricultural UniversityZhengzhou 450000China

Rationally modulating the adsorption configuration of the key*CO intermediate could facilitate carbon±carbon(C±C)coupling to generate multi-carbon products in the electrochemical CO_(2) reduction *** this work,theoretical calculations reveal that C±C coupling via atopadsorbed*CHO and hollow-adsorbed*CO over Cu sites is an energetically favorable *** a proof of concept,a tandem trimetallic AuAgCu heterojunction(Au@Ag/Cu)was prepared,where the atop-adsorbed*CO over Au@Ag sites could migrate to Cu sites with hollow adsorption configuration,and then the asymmetric C±C coupling via transferred hollow-adsorbed*CO and existed atop-adsorbed*CHO over Cu sites facilitates the formation of the ethanol product,exhibiting a maximum Faraday efficiency of 65.9%at a low potential of−0.3 V *** hydrogen *** work provides new insights into the intrinsic understanding of tandem catalysis by regulating adsorption configuration of the intermediate products.

关键词： CO_(2)electroreduction C–C coupling tandem catalysis adsorption configuration ethanol

3D Printing of Tough Hydrogel Scaffolds with Functional Surface Structures for Tissue Regeneration

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第2期17卷 18-45页

作者： Ke Yao Gaoying Hong Ximin Yuan Weicheng Kong Pengcheng Xia Yuanrong Li Yuewei Chen nian Liu Jing He Jue shi Zihe Hu Yanyan Zhou Zhijian Xie Yong He State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Liangzhu Laboratory Zhejiang UniversityHangzhou 310027People’s Republic of China Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province College of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Stomatology Hospital School of StomatologyZhejiang University School of MedicineHangzhou 310027People’s Republic of China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001People’s Republic of China Institute of Digital Medicine Nanjing First HospitalNanjing Medical UniversityNanjing 210006People’s Republic of China

Hydrogel scaffolds have numerous potential applications in the tissue engineering ***,tough hydrogel scaffolds implanted in vivo are seldom reported because it is difficult to balance biocompatibility and high mechanical *** by Chinese ramen,we propose a universal fabricating method(printing-P,training-T,cross-linking-C,PTC&PCT)for tough hydrogel scaffolds to fill this ***,3D printing fabricates a hydrogel scaffold with desired structures(P).Then,the scaffold could have extraordinarily high mechanical properties and functional surface structure by cycle mechanical training with salting-out assistance(T).Finally,the training results are fixed by photo-cross-linking processing(C).The tough gelatin hydrogel scaffolds exhibit excellent tensile strength of 6.66 MPa(622-fold untreated)and have excellent ***,this scaffold possesses functional surface structures from nanometer to micron to millimeter,which can efficiently induce directional cell ***,this strategy can produce bionic human tissue with mechanical properties of 10 kPa-10 MPa by changing the type of salt,and many hydrogels,such as gelatin and silk,could be improved with PTC or PCT *** experiments show that this scaffold can effectively promote the new generation of muscle fibers,blood vessels,and nerves within 4 weeks,prompting the rapid regeneration of large-volume muscle loss injuries.

关键词： 3D printing Tough hydrogel scaffold Functional surface structure Tissue regeneration Biomaterials

Low-temperature chlorination roasting technology for the simultaneous recovery of valuable metals from spent LiCoO_(2)cathode material

在线全文

学校读者我要写书评

暂无评论

International Journal of minerals,Metallurgy and Materials 2025年第1期32卷 80-91页

作者： Junjie shi Changle Hou Jingjing Dong Dong Chen Jianzhong Li Key Laboratory for Ecological Metallurgy of Multimetallic mineral(ministry of Education) Northeastern UniversityShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China

With the continuous increase in the disposal volume of spent lithium-ion batteries(LIBs),properly recycling spent LIBs has become essential for the advancement of the circular *** study presents a systematic analysis of the chlorination roasting kinetics and proposes a new two-step chlorination roasting process that integrates thermodynamics for the recycling of LIB cathode *** activation energy for the chloride reaction was 88.41 kJ/mol according to thermogravimetric analysis–derivative thermogravimetry data obtained by using model-free,model-fitting,and Z(α)function(αis conversion rate).Results indicated that the reaction was dominated by the first-order(F1)model when the conversion rate was less than or equal to 0.5 and shifted to the second-order(F2)model when the conversion rate exceeded *** conditions were determined by thoroughly investigating the effects of roasting temperature,roasting time,and the mass ratio of NH_(4)Cl to LiCoO_(2).Under the optimal conditions,namely 400℃,20 min,and NH_(4)Cl/LiCoO_(2)mass ratio of 3:1,the leaching efficiency of Li and Co reached 99.43% and 99.05%,*** of the roasted products revealed that valuable metals in LiCoO_(2)transformed into CoCl_(2) and ***,the reaction mechanism was elucidated,providing insights for the establishment of a novel low-temperature chlorination roasting technology based on a crystal structure *** technology can guide the development of LIB recycling processes with low energy consumption,low secondary pollution,high recovery efficiency,and high added value.

关键词： spent lithium-ion battery thermodynamics chlorination roasting kinetics circular economy