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The only purple-flower species in Actaea *** pollinated by a hornet

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Journal of Plant Ecology 2024年第4期17卷 181-196页

作者： Lin-Feng Qiu Jiu-Dong Zhang ying Li Xiao-ying Liu Dan-Qing Zhang Long Huang Ya-Peng Yang Shi-Yu Wang Yue-yi Li Zi-Wei Ma Jie Sui Lin Wang Xiao-Fen Che Xian-Hua Tian yi ren Jian-Qiang Zhang National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China College of Life SciencesShaanxi Normal UniversityXi’an 710119China Key Laboratory of Medicinal Plant Resource and Natural Pharmaceutical Chemistry of Ministry of Education Shaanxi Normal UniversityXi’an 710119China College of Biological and Environmental Engineering Xi’an UniversityXi’an 710065China

Examining the pollination biology of plant species is not only crucial for enhancing our understanding of their reproductive biology,but also essential for elucidating their adaptation and evolutionary ***,we investigated the breeding system and pollination biology of two closely related species in *** flower of *** is unique in the genus with purple and chartaceous(paper-like)sepals,fewer stamens with yellow anthers and purple *** three seasons of field observation and exclusion experiments,we determined that *** was primarily pollinated by a hornet species,Vespa bicolor,which also served as the most efficient *** contrast,*** was primarily pollinated by large *** purpurea exhibited a significantly higher cumulative nectar volume than ***,which could be a crucial factor in attracting ***.A control experiment further demonstrated that removing the nectar leaf(petal)significantly decreased the visiting frequency of *** system studies revealed that both species were self-compatible,yet they primarily underwent outcrossing in natural *** study presents a compelling case of possible pollinator shift in *** accompanied by morphological divergence.A more in-depth investigation of this system would offer crucial insights into the extent to which pollinators are involved in the plant speciation process and whether they contribute to reproductive isolation between closely related species.

关键词： Actaea purpurea Actaea japonica breeding system pollinator shift speciation Vespa bicolor

Clinical feasibility of laparoscopic left lateral segment liver resection with magnetic anchor technique:The first clinical study from China

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World Journal of Gastrointestinal Surgery 2024年第5期16卷 1336-1343页

作者： Miao-Miao Zhang Ji-Gang Bai Dong Zhang Jie Tao Zhi-Min Geng Zhuo-Qun Li Yu-Xiang ren Yu-HanZhang yi Lyu Xiao-Peng Yan Department of Hepatobiliary Surgery The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Shaanxi Provincial Key Laboratory of Magnetic Medicine The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Zonglian College Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Qide College Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina

BACKGROUND Magnetic anchor technique(MAT)has been applied in laparoscopic cholecystectomy and laparoscopic appendectomy,but has not been reported in laparoscopic partial *** To evaluate the feasibility of the MAT in laparoscopic left lateral segment liver *** Retrospective analysis was conducted on the clinical data of eight patients who underwent laparoscopic left lateral segment liver resection assisted by MAT in our department from July 2020 to November *** Y-Z magnetic anchor devices(Y-Z MADs)was independently designed and developed by the author of this paper,which consists of the anchor magnet and magnetic grasping *** time,intraoperative blood loss,intraoperative accidents,operator experience,postoperative incision pain score,postoperative complications,and other indicators were evaluated and *** All eight patients underwent a MAT-assisted laparoscopic left lateral segment liver resection,including three patients undertaking conventional 5-port and five patients having a transumbilical single-port *** mean operation time was 138±34.32 min(range 95-185 min)and the mean intraoperative blood loss was 123±88.60 mL(range 20-300 mL).No adverse events occurred during the *** Y-Z MADs showed good workability and maneuverability in both tissue and organ *** particular,the operators did not experience either a“chopstick”or“sword-fight”effect in the single-port laparoscopic *** The results show that the MAT is safe and feasible for laparoscopic left lateral segment liver resection,especially,exhibits its unique abettance for transumbilical single-port laparoscopic left lateral segment liver resection.

关键词： Magnetosurgery/magnetic surgery Magnetic anchor technique Laparoscopic hepatectomy Transumbilical singleport laparoscopy Magnet

Multiple valence states of Fe boosting SERS activity of Fe_(3)O_(4) nanoparticles and enabling effective SERS-MRI bimodal cancer imaging

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Fundamental Research 2024年第4期4卷 858-867页

作者： Jie Lin Xuehua Ma Anran Li Ozioma Udochukwu Akakuru Chunshu Pan Meng He Chenyang Yao Wenzhi ren Yanying Li Dinghu Zhang yi Cao Tianxiang Chen Aiguo Wu Cixi Institute of Biomedical Engineering International Cooperation Base of Biomedical Materials Technology and ApplicationChinese Academy of Science Key Laboratory of Magnetic Materials and DevicesZhejiang Engineering Research Center for Biomedical MaterialsNingbo Institute of Materials Technology and EngineeringCASNingbo315201China School of Engineering Medicine Key Laboratory of Big Data-Based Precision Medicine(Beihang University)Ministry of Industry and Information TechnologyBeihang UniversityBeijing100191China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516000China University of Chinese Academy of Sciences Bejing 100049China

Developing novel nanoparticle-based bioprobes utilized in clinical settings with imaging resolutions ranging from cell to tissue levels is a major challenge for tumor diagnosis and ***,an optimized strategy for designing a Fe_(3)O_(4)-based bioprobe for dual-modal cancer imaging based on surface-enhanced Raman scattering(SERS)and magnetic resonance imaging(MRI)is *** SERS activity of ultrasmall Fe_(3)O_(4) nanoparticles(NPs)was discovered,and a 5×10^(-9)M limit of detection for crystal violet molecules was successfully *** high-efficiency interfacial photon-induced charge transfer in Fe_(3)O_(4) NPs was promoted by multiple electronic energy levels ascribed to the multiple valence states of Fe,which was observed using ultraviolet-visible diffuse reflectance *** functional theory calculations were utilized to reveal that the narrow band gap and high electron density of states of ultrasmall Fe_(3)O_(4) NPs significantly boosted the vibronic coupling resonances in the SERS system upon *** subtypes of cancer cells were accurately recognized via high-resolution SERS imaging in vitro using the prepared Feg Og-based bioprobe with high sensitivity and good ***,Fe_(3)O_(4)-based bioprobes simultaneously exhibited T,-weighted MRI contrast enhancement with an active targeting capability for tumors in *** the best of our knowledge,this is the first report on the use of pure semiconductor-based SERS-MRI dual-modal nanoprobes in tumor imaging in vivo and in vitro,which has been previously realized only using semiconductor-metal complex *** non-metallic materials with SERS-MRI dual-modal imaging established in this report are a promising cancer diagnostic platform,which not only showed excellent performance in early tumor diagnosis but also possesses great potential for image-guided tumor treatment.

关键词： Fe_(3)O_(4)NPs SERS-MRI dual-modal nanoprobes PICT Multiple valence states Cancer diagnosis

Link between mutations in ACVRL1 and PLA2G4A genes and chronic intestinal ulcers:A case report and review of literature

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World Journal of Gastrointestinal Surgery 2024年第3期16卷 932-943页

作者： Yong-Jing Tang Jian Zhang Jie Wang ren-Dong Tian Wei-Wei Zhong Ben-Sheng Yao Bing-Yu Hou ying-Hua Chen Wei He yi-Huai He Department of Infectious Diseases The Affiliated Hospital of Zunyi Medical UniversityZunyi 563000Guizhou ProvinceChina Department of Gastroenterology Dafang County People's HospitalBijie 551600Guizhou ProvinceChina Department of Internal Medicine Puchang BranchMedical CommunitySuiyang County People's HospitalZunyi 563300Guizhou ProvinceChina Department of Infectious Diseases Jingmen Central HospitalJingmen 448000Hubei ProvinceChina Department of Infectious Diseases Dafang County People's HospitalBijie 551600Guizhou ProvinceChina

BACKGROUND Genetic factors of chronic intestinal ulcers are increasingly garnering *** present a case of chronic intestinal ulcers and bleeding associated with mu-tations of the activin A receptor type II-like 1(ACVRL1)and phospholipase A2 group IVA(PLA2G4A)genes and review the available relevant *** SUMMARY A 20-year-old man was admitted to our center with a 6-year history of recurrent abdominal pain,diarrhea,and dark *** the onset 6 years ago,the patient had received treatment at a local hospital for abdominal pain persisting for 7 d,under the diagnosis of diffuse peritonitis,acute gangrenous appendicitis with perforation,adhesive intestinal obstruction,and pelvic *** surgical treat-ment included exploratory laparotomy,appendectomy,intestinal adhesiolysis,and pelvic abscess *** patient’s condition improved and he was ***,the recurrent episodes of abdominal pain and passage of black stools started again one year after *** the basis of these features and results of subsequent colonoscopy,the clinical diagnosis was established as in-flammatory bowel disease(IBD).Accordingly,aminosalicylic acid,immunotherapy,and related symptomatic treatment were administered,but the symptoms of the patient did not improve *** investigations revealed mutations in the ACVRL1 and PLA2G4A ***1 and PLA2G4A are involved in angiogenesis and coagulation,*** suggests that the chronic intestinal ulcers and bleeding in this case may be linked to mutations in the ACVRL1 and PLA2G4A *** Kangfuxin liquid was administered to promote healing of the intestinal mucosa and effectively manage clinical *** Mutations in the ACVRL1 and PLA2G4A genes may be one of the causes of chronic intestinal ulcers and bleeding in *** administered Kangfuxin liquid may have therapeutic potential.

关键词： Intestinal ulcers Crohn’s disease Ulcerative colitis Activin A receptor type II-like 1 Phospholipase A2 group 4A Case report

Characterization of acute-on-chronic liver diseases: A multicenter prospective cohort study

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World Journal of Hepatology 2024年第5期16卷 809-821页

作者： Yuan-Yao Zhang Sen Luo Hai Li Shu-Ning Sun Xian-bo Wang Xin Zheng Yan Huang Bei-Ling Li Yan-Hang Gao Zhi-Ping Qian Feng Liu Xiao-bo Lu Jun-Ping Liu Hao-Tang ren Yu-Bao Zheng Hua-Dong Yan Guo-Hong Deng Liang Qiao Yan Zhang Wen-yi Gu Xiao-Mei Xiang yi Zhou yi-Xin Hou Qun Zhang Yan Xiong Cong-Cong Zou Jun Chen Ze-Bing Huang Xiu-Hua Jiang Ting-Ting Qi Yuan-Yuan Chen Na Gao Chun-Yan Liu Wei Yuan Xue Mei Jing Li Tao Li Rong-Jiong Zheng Xin-yi Zhou Jun Zhao Zhong-Ji Meng Department of Infectious Disease Institute of Biomedical ResearchRegulatory Mechanism and Targeted Therapy for Liver Cancer Shiyan Key LaboratoryHubei provincial Clinical Research Center for Precise Diagnosis and Treatment of Liver CancerTaihe HospitalHubei University of MedicineShiyan 442000Hubei ProvinceChina Department of Gastroenterology Renji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200120China Department of Infectious Diseases Southwest HospitalThe Third Military Medical University(Army Medical University)Chongqing 400000China Center of Integrative Medicine Beijing Ditan HospitalCapital Medical UniversityBeijing 100020China Department of Infectious Diseases Institute of Infection and ImmunologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430020Hubei ProvinceChina Department of Infectious Diseases Hunan Key Laboratory of Viral HepatitisXiangya HospitalCentral South UniversityChangsha 110051Hunan ProvinceChina Hepatology Unit Department of Infectious DiseasesNanfang HospitalSouthern Medical UniversityGuangzhou 510515Guangdong ProvinceChina Department of Hepatology The First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina Department of Liver Intensive Care Unit Shanghai Public Health Clinical CentreFudan UniversityShanghai 200093China Tianjin Institute of Hepatology Nankai University Second People's HospitalTianjin 300192China Infectious Disease Center The First Affiliated Hospital of Xinjiang Medical UniversityUrumqi 830054Xinjiang Uygur Autonomous RegionChina Department of Infectious Diseases and Hepatology The Second Hospital of Shandong UniversityJinan 250000Shandong ProvinceChina State Key Laboratory for Diagnosis and Treatment of Infectious Diseases Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseaseThe First Affiliated HospitalZhejiang University School of MedicineHangzhou 310000Zhejiang ProvinceChina Department of Infectious Diseases The Thir

BACKGROUND Acute-on-chronic liver disease(AoCLD)accounts for the majority of patients hospitalized in the Department of Hepatology or Infectious *** To explore the characterization of AoCLD to provide theoretical guidance for the accurate diagnosis and prognosis of *** Patients with AoCLD from the Chinese Acute-on-Chronic Liver Failure(ACLF)study cohort were included in this *** clinical characteristics and outcomes,and the 90-d survival rate associated with each clinical type of AoCLD were analyzed,using the Kaplan-Meier method and the log-rank *** A total of 3375 patients with AoCLD were enrolled,including 1679(49.7%)patients with liver cirrhosis acute decompensation(LC-AD),850(25.2%)patients with ACLF,577(17.1%)patients with chronic hepatitis acute exacer-bation(CHAE),and 269(8.0%)patients with liver cirrhosis active phase(LC-A).The most common cause of chronic liver disease(CLD)was HBV infection(71.4%).The most common precipitants of AoCLD was bacterial infection(22.8%).The 90-d mortality rates of each clinical subtype of AoCLD were 43.4%(232/535)for type-C ACLF,36.0%(36/100)for type-B ACLF,27.0%(58/215)for type-A ACLF,9.0%(151/1679)for LC-AD,3.0%(8/269)for LC-A,and 1.2%(7/577)for *** HBV infection is the main cause of CLD,and bacterial infection is the main precipitant of *** most common clinical type of AoCLD is *** diagnosis and timely intervention are needed to reduce the mortality of patients with LC-AD or ACLF.

关键词： Acute-on-chronic liver disease Acute-on-chronic liver failure Liver cirrhosis Clinical features Prognosis

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不可达系统的鲁棒贝叶斯估计方法

控制理论与应用 2024年第2期41卷 221-228页

作者：易圣伦任雪梅北京理工大学自动化学院北京100081

本文针对模型扰动下的不可达系统,提出了一种新的针对退化分布下的极大极小博弈问题的求解和证明方法.首先,文章将有相对熵约束的极大极小博弈问题转换成了一个无约束的拉格朗日函数,并找到其在均值和奇异的方差矩阵方向上都为严格凹函... 详细信息

本文针对模型扰动下的不可达系统,提出了一种新的针对退化分布下的极大极小博弈问题的求解和证明方法.首先,文章将有相对熵约束的极大极小博弈问题转换成了一个无约束的拉格朗日函数,并找到其在均值和奇异的方差矩阵方向上都为严格凹函数的条件;其次,本文通过求解其均值和方差的极大值,得到所对应的鲁棒贝叶斯估计器和奇异的扰动状态误差协方差矩阵;最后,文章证明存在一个唯一的拉格朗日乘子满足其约束条件.微机电系统加速度计漂移估计仿真结果表明对所提算法的有效性.

关键词：鲁棒估计贝叶斯理论不可达系统极大极小博弈

扩大内需背景下平台经济赋能体育消费升级研究

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体育文化导刊 2024年第8期 77-83,90页

作者：蒋亚斌任波任怡霖朱兰芳安徽师范大学体育学院安徽芜湖241003 上海体育大学经济管理学院上海200438 扬州大学体育学院江苏扬州225127

运用文献资料、逻辑分析等方法,探讨在扩大内需背景下平台经济赋能体育消费升级的机制和困境,并提出优化路径。体育消费升级的价值:稳增长、促就业;促健康、惠民生;转方式、调结构。机制:提升消费能力,优化消费结构,革新消费方式,提高... 详细信息

运用文献资料、逻辑分析等方法,探讨在扩大内需背景下平台经济赋能体育消费升级的机制和困境,并提出优化路径。体育消费升级的价值:稳增长、促就业;促健康、惠民生;转方式、调结构。机制:提升消费能力,优化消费结构,革新消费方式,提高消费水平。困境:新型体育消费环境适配不足,新型基础设施建设短板凸显,数字体育市场监管保障机制缺位,体育产业有效供给不足问题突出。优化路径:优化环境适配,充分释放数字体育消费潜力;加快基础建设,深化体育消费场景虚实融合;加强新型监管,保障平台体育经济规范有序;贯彻创新驱动,提升体育产业供给有效性。

关键词：体育经济体育消费升级平台经济扩大内需

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浅海粗糙海底声散射建模及声场特性

物理学报 2024年第3期73卷 126-133页

作者：汪磊黄益旺郭霖任超哈尔滨工程大学水声技术全国重点实验室哈尔滨150001 海洋信息获取与安全工信部重点实验室(哈尔滨工程大学) 工业和信息化部哈尔滨150001 哈尔滨工程大学水声工程学院哈尔滨150001 中国科学院声学研究所东海研究站上海201815

声散射是海洋声学的重要内容,海底表面的不平整性形成的声散射是海洋中引起声传播起伏的原因之一.针对海底表面粗糙度声散射问题,建立了水平分层浅海波导中海底散射声场模型.该模型将简正波理论与Lambert定律相结合.基于该模型获得了散... 详细信息

声散射是海洋声学的重要内容,海底表面的不平整性形成的声散射是海洋中引起声传播起伏的原因之一.针对海底表面粗糙度声散射问题,建立了水平分层浅海波导中海底散射声场模型.该模型将简正波理论与Lambert定律相结合.基于该模型获得了散射声场声压的振幅与相位的统计分布,并数值模拟了海底散射声场的强度及其空间相关系数,实现了粗糙界面条件下海底散射声场预报,揭示了散射声场空间特性随海底粗糙度的变化规律.结果表明,使用Lambert定律描述粗糙界面声散射时,在海底粗糙度小于波长情况下,随着空间距离的增大,空间两个不同位置的散射声场的空间相关系数具有周期性振荡衰减的变化规律,并且在垂直方向上,振荡周期更大,衰减更慢.当粗糙度增大时,水平和垂直相关系数振荡幅度逐渐增大,水平相关系数振荡周期数逐渐减少,在接收点逐渐靠近海底时,垂直相关系数不再发生衰减,这是海底声散射减弱的结果.本文模型理论亦可推广到粗糙海面的声散射建模中.对于非水平海底情况,采用耦合简正波或绝热简正波理论进行声传播建模,可以得到距离有关波导中粗糙界面的散射声场.

关键词：海底声散射简正波 Lambert定律空间相关

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低碳城市试点政策能够促进城市低碳发展吗?

当代经济管理 2024年第3期46卷 26-37页

作者：郭丰任毅重庆工商大学长江上游经济研究中心重庆400067

低碳试点城市作为探索绿色低碳转型发展的示范城市,在推动城市绿色低碳发展和实现碳达峰、碳中和目标中发挥着重要作用。以低碳城市试点政策为准自然实验,基于中国2006—2019年221个城市的面板数据,利用渐进双重差分模型考察了低碳城市... 详细信息

低碳试点城市作为探索绿色低碳转型发展的示范城市,在推动城市绿色低碳发展和实现碳达峰、碳中和目标中发挥着重要作用。以低碳城市试点政策为准自然实验,基于中国2006—2019年221个城市的面板数据,利用渐进双重差分模型考察了低碳城市试点政策对城市碳排放的影响。研究结果表明,低碳城市试点政策显著降低了城市碳排放量,这一结论经过平行趋势检验、安慰剂检验、倾向得分匹配方法等稳健性检验后依然成立。机制分析表明,低碳城市试点政策通过促进城市产业结构升级和提升城市绿色技术创新水平降低了城市碳排放。异质性分析发现,低碳城市试点政策显著降低了东部地区、非资源型城市和高政府治理城市的碳排放。文章的研究结论为充分发挥低碳城市试点政策的碳减排效应,进而助力碳达峰、碳中和目标的实现提供了政策启示和实践参考。

关键词：低碳城市碳排放产业结构升级绿色技术创新双重差分模型