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晋西黄土区土壤理化特征对长期植被恢复的响应

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生态学报 2024年第7期44卷 2873-2885页

作者：于航冯天骄卫伟王平北京林业大学水土保持学院北京100083 山西吉县森林生态系统国家野外科学观测研究站吉县042200 中国科学院生态环境研究中心城市与区域生态国家重点实验室北京100085

晋西黄土区具有典型的残塬沟壑地貌特征,该地区植被恢复时间较长,探究植被恢复对土壤理化性质的长期影响,以及开展环境因子长期定位观测,对实现区域生态修复与保护具有重要意义。以晋西黄土区四种典型植被恢复林地(辽东栎次生林地、刺... 详细信息

晋西黄土区具有典型的残塬沟壑地貌特征,该地区植被恢复时间较长,探究植被恢复对土壤理化性质的长期影响,以及开展环境因子长期定位观测,对实现区域生态修复与保护具有重要意义。以晋西黄土区四种典型植被恢复林地(辽东栎次生林地、刺槐人工林地、油松人工林地、侧柏人工林地)为研究对象,测定2.06年、2.12.、2.017年不同土层(0—10 cm、10—2. cm、2.—40 cm、40—60 cm、60—80 cm、80—100 cm)土壤理化性质(有机碳、全氮、全磷、全钾、酸碱度、土壤容重、砂粒、粉粒、黏粒),采用主成分分析、冗余分析、相关性分析等统计方法,探讨长期植被恢复下土壤中各因子的变化和相互作用规律,分析不同植被类型对土壤属性时空异质性的影响。结果表明:在长期植被恢复过程中,不同林分土壤有机碳和全氮含量会表现为初期增加,然后下降。土壤全钾和全磷含量则是先减少后增加,植被恢复增强了土壤有机碳和全氮的积累。土壤的酸碱度、容重、砂粒、粉粒、黏粒的变化则不明显,这些属性在植被恢复期内受到的外部影响较小。总体来说,长期植被恢复增加了土壤养分含量、土壤砂粒、土壤粉粒,降低土壤容重、土壤黏粒。相比人工林,辽东栎次生林改善土壤结构、增加土壤肥力的效果最好。冗余分析表明,不同植被类型长期恢复条件下,影响土壤养分含量最主要的属性存在差异,刺槐的土壤粉粒、侧柏的土壤容重对多年土壤养分变化的贡献度最高。本研究结果可为黄土残塬区的长期植被恢复实践工作的生态效益评估提供数据支持和理论依据。

关键词：植被恢复黄土高原土壤理化性质土壤综合肥力

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基于节点碳势需求响应的电力系统双层优化调度

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电力系统自动化 2024年第9期48卷 44-53页

作者：梁宁方茜徐慧慧郑峰缪猛昆明理工大学电力工程学院云南省昆明市650500 国网甘肃省电力公司经济技术研究院甘肃省兰州市730000 福州大学电气工程与自动化学院福建省福州市350000

为实现电力系统低碳排放、助力经济提升,在建立碳势引导多元柔性负荷模型的基础上,提出一种基于节点碳势需求响应的双层优化调度策略。首先,利用比例共享原则追踪碳排放流,搭建碳排放流模型,从时空维度感知各节点的碳势变化规律。其次,... 详细信息

为实现电力系统低碳排放、助力经济提升,在建立碳势引导多元柔性负荷模型的基础上,提出一种基于节点碳势需求响应的双层优化调度策略。首先,利用比例共享原则追踪碳排放流,搭建碳排放流模型,从时空维度感知各节点的碳势变化规律。其次,将碳流分析纳入负荷侧需求响应机制中,利用节点碳势建立负荷聚合商需求响应碳排放模型,并厘清不同碳势强度下负荷聚合商调度差异,构建基于节点碳势需求响应的电力系统双层优化调度模型。模型上层为电网运营商最优经济调度,模型下层为负荷聚合商需求响应经济调度。最后,以改进IEEE 30节点系统为例,验证了所提方法的有效性。

关键词：碳排放流碳势多元柔性负荷需求响应电动汽车双层优化调度

Transjugular intrahepatic portosystemic shunt for esophagogastric variceal bleeding in patients with hepatocellular carcinoma and portal vein tumor thrombus

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World Journal of Gastrointestinal Surgery 2024年第9期16卷 2778-2786页

作者： Zhi-Qiang Wu Fan Wang feng-Pin Wang Hong-Jie Cai Song Chen Jian-Yong Yang Wen-Bo Guo Department of Interventional Radiology The First Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510080Guangdong ProvinceChina Department of Medical Oncology Affiliated Cancer Hospital&Institute of Guangzhou Medical UniversityGuangzhou 510080Guangdong ProvinceChina

BACKGROUND Whether hepatocellular carcinoma(HCC)with portal vein tumor thrombus(PVTT)and acute esophagogastric variceal bleeding(EGVB)can improve the success rate of endoscopic hemostasis and overall survival(OS)from transjugular intrahepatic portosystemic shunt(TIPS)remains *** To compare the clinical outcomes between TIPS and standard treatment for such HCC *** This monocenter,retrospective cohort study included patients diagnosed as HCC with PVTT and upper gastrointestinal *** were grouped by the treatment(TIPS or standard conservative treatment).The success rate of en-doscopic hemostasis,OS,rebleeding rates,and main causes of death were *** Between July 2.15 and September 2.2.,a total of 77 patients(2. with TIPS and 48 with standard treatment)were *** success rate of endoscopic hemostasis was 96.6%in the TIPS group and 95.8%in the standard treatment *** the 2. patients in TIPS group successful underwent TIPS procedure and had a better OS compared with standard treatment within the first 160 days after treatment(68 days vs 43 days,P=0.02.),but shorter OS after 160 days(2.8 days vs 472.days, P = 0.02.). Cheng’s Classification of PVTT, total bilirubin and Child-Pugh class wereindependently negative associated with OS (all P < 0.05). The main causes of death were liver failure or hepaticencephalopathy (75.9%) in the TIPS group and rebleeding (68.8%) in the standard *** could reduce the risk of early death due to rebleeding and prolong short-term survival in HCC patients withPVTT and acute EGVB, which deserves further investigation.

关键词： Hepatocellular carcinoma Portal vein tumor thrombus Transjugular intrahepatic portosystemic shunts Acute esophagogastric variceal bleeding Standard treatment Endoscopic treatment

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跨文化商务话语:跨学科研究主题与方法

外语界 2024年第4期 17-23页

作者：冯捷蕴张丹丹对外经济贸易大学英语学院北京100029

随着经济全球化、文化多元化及数字化加速,跨文化商务话语逐渐成为重要研究领域。本文对比分析了国内外跨文化商务话语研究,发现国内相关研究的主题偏重于商务英语教学,方法单一,跨学科研究鲜见。文章提出从跨学科视角探讨跨文化商务话... 详细信息

随着经济全球化、文化多元化及数字化加速,跨文化商务话语逐渐成为重要研究领域。本文对比分析了国内外跨文化商务话语研究,发现国内相关研究的主题偏重于商务英语教学,方法单一,跨学科研究鲜见。文章提出从跨学科视角探讨跨文化商务话语研究的企业社会责任话语、企业领导话语、广告话语、商务谈判话语、企业内部沟通话语五个重要主题,阐述基于语料库的研究方法、内容分析法、多模态话语分析法、交际民族志四种研究方法,旨在推动中国跨文化商务话语研究深入发展。

关键词：跨文化商务话语跨学科研究多主题混合研究方法

孔槽泡沫夹芯复合材料真空辅助树脂传递工艺仿真与优化

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材料导报 2024年第2期38卷 249-257页

作者：杨张韬倪爱清王继辉冯雨薇武汉理工大学材料科学与工程学院武汉430070 武汉理工大学材料复合新技术国家重点实验室武汉430070

本工作提出了孔槽泡沫夹芯复合材料的设计方案并针对真空辅助树脂传递(VARI)工艺进行了实验和仿真研究。首先,通过实验测得玻璃纤维织物和树脂的相关参数,利用Hagen-Poiseuill方程和达西定律算出孔洞和沟槽的等效渗透率;接着,利用PAM-RT... 详细信息

本工作提出了孔槽泡沫夹芯复合材料的设计方案并针对真空辅助树脂传递(VARI)工艺进行了实验和仿真研究。首先,通过实验测得玻璃纤维织物和树脂的相关参数,利用Hagen-Poiseuill方程和达西定律算出孔洞和沟槽的等效渗透率;接着,利用PAM-RTM模拟孔槽泡沫夹芯复合材料的VARI工艺过程,并与实验结果进行对比;然后,使用PAM-RTM研究了芯材加工参数、树脂灌注方式和导流网铺敷区域对成型过程的影响,并选出了最优方案;最后,在此方案的基础上研究了树脂黏度与灌注时间的关系,并拟合得到了预测函数。结果表明:实验结果与仿真结果基本一致;最优灌注方案可显著缩短树脂填充时间并降低整体孔隙率;预测函数可准确预测灌注时间,对实际生产具有一定的指导意义。

关键词：夹芯复合材料等效渗透率真空辅助树脂传递芯材加工工艺优化孔隙率

Sintilimab(anti-PD-1 antibody)plus chidamide(histone deacetylase inhibitor)in relapsed or refractory extranodal natural killer T-cell lymphoma(SCENT):a phase Ⅰb/Ⅱ study

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Signal Transduction and Targeted Therapy 2024年第6期9卷 2765-2773页

作者： Yan Gao Haixia He Xueping Li Liling Zhang Wei Xu Ru feng Wenyu Li Yin Xiao Xinxiu Liu Yu Chen Xiaoxiao Wang Bing Bai Huijing Wu Qingqing Cai Zhiming Li Jibin Li Suxia Lin Yanxia He Liqin Ping Cheng Huang Jiaying Mao Xiujin Chen Baitian Zhao Huiqiang Huang State Key Laboratory of Oncology in South China&Collaborative Innovation Center of Cancer Medicine Guangdong Provincial Clinical Research Center for CancerSun Yat-sen University Cancer CenterGuangzhouChina Department of Medical Oncology Sun Yat-sen University Cancer CenterGuangzhouChina Department of Radiation Oncology Sun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhouChina Department of Hematology Sun Yat-sen University Cancer CenterGuangzhouChina Cancer Center Union Hospital affiliated to Tongji Medical College of Huazhong University of Science and TechnologyWuhanChina Department of Hematology The First Affiliated Hospital of Nanjing Medical UniversityJiangsu Province HospitalNanjingChina Department of Hematology Nanfang HospitalSouthern Medical UniversityGuangzhouChina Department of Lymphoma Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhouChina Department of pathology Guangdong General HospitalGuangdong Academy of Medical SciencesGuangzhouChina Department of Medical Oncology Hubei Cancer CenterWuhanChina Department of Clinical Research Sun Yat-sen University Cancer CenterGuanzhouChina Department of Pathology Sun Yat-sen University Cancer CenterGuangzhouChina

Anti-PD-1 antibodies are a favorable treatment for relapsed or refractory extranodal natural killer T cell lymphoma(RR-ENKTL),however,the complete response(CR)rate and the duration of response(DOR)need to be *** phase 1b/2.study investigated the safety and efficacy of sintilimab,a fully human anti-PD-1 antibody,plus chidamide,an oral subtype-selective histone deacetylase inhibitor in 38 patients with *** objective response rate(ORR)of combination treatment was 80%.Patients received escalating doses of chidamide,administered concomitantly with fixed-dose sintilimab in 2.-days cycles up to 12.*** dose-limiting events were observed,RP2. of chidamide was 30 mg twice a ***-nine patients were enrolled in phase *** the intention-to-treat population(n=37),overall response rate was 59.5% with a complete remission rate of 48.6%.The median DOR,progression-free survival(PFS),and overall survival(OS)were 2..3,2..2.and 32.9 months,*** most common grade 3 or higher treatment-emergent adverse events(AEs)were neutropenia(2..9%)and thrombocytopenia(10.5%),immune-related AEs were reported in 18(47.3%)*** biomarker assessment suggested that a combination of dynamic plasma ctDNA and EBV-DNA played a vital prognostic ***3 mutation shows an unfavorable *** outcome of anticipate ORR was not achieved,sintilimab plus chidamide was shown to have a manageable safety profile and yielded encouraging CR rate and DOR in RR-ENKTL for the first *** is a promising therapeutic option for this population.

关键词： killer lymphoma doses

数字营商环境与企业创新力——基于企业数字化转型与企业家冒险倾向的双重视角

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福建论坛（人文社会科学版） 2024年第7期 63-81页

作者：李政王晓明冯大威辽宁大学经济学院内蒙古党校(行政学院)科研处吉林大学江西财经大学应用经济学院(数字经济学院)

数字营商环境改善了社会治理和经济发展模式,为企业创新发展提供了优质的外部环境。本文利用2.13—2.2.年上市公司数据,基于面板固定效应模型实证检验了地区数字营商环境对企业创新力的影响。数字营商环境改善能够显著提升企业创新力,... 详细信息

数字营商环境改善了社会治理和经济发展模式,为企业创新发展提供了优质的外部环境。本文利用2.13—2.2.年上市公司数据,基于面板固定效应模型实证检验了地区数字营商环境对企业创新力的影响。数字营商环境改善能够显著提升企业创新力,借助中介效应模型研究,我们发现数字营商环境会通过提升企业数字化转型和改变企业家冒险倾向两条渠道提升企业创新力。在进一步分析中,加入“大数据试验区”政策冲击,我们发现政策的实施是有利于促进企业创新力提升的。从数字营商环境与传统营商环境对企业创新力影响的比较分析来看,数字营商环境的边际影响更大,且二者之间存在协同效应。

关键词：数字营商环境企业创新力企业数字化转型企业家冒险倾向

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国内外拓展性临床试验制度发展现状及思考

中国新药杂志 2024年第8期33卷 798-804页

作者：常凤媛林琳田丽娟沈阳药科大学工商管理学院沈阳110016

从不同视角对国内外拓展性临床试验制度加以对比,总结并借鉴国外的成功经验,为我国拓展性临床试验制度进一步完善提供建议与参考。通过文献研究、对比研究、历史研究等方法对国内外拓展性临床试验制度进行研究,发现欧美等国家/地区拓展... 详细信息

从不同视角对国内外拓展性临床试验制度加以对比,总结并借鉴国外的成功经验,为我国拓展性临床试验制度进一步完善提供建议与参考。通过文献研究、对比研究、历史研究等方法对国内外拓展性临床试验制度进行研究,发现欧美等国家/地区拓展性临床试验制度体系已较为完善,在适用范围、申请流程和费用支付等方面均作出明确规定,且规范了拓展性临床试验药品的使用和管理,使危重症患者能够得到及时治疗。但我国目前尚处于初步阶段,在落地实施过程中也存在较多问题,如拓展性临床试验制度不完善、申请发起人及费用支付单一化、试验过程中存在的伦理问题等,均影响了制度的实施。建议我国应在完善拓展性临床试验制度相关法规的基础上,通过多方协作实行严格的过程监管,化解申请发起难题,提高审查效率,降低试验操作过程的风险,从而促使我国拓展性临床试验制度进一步健全和完善。

关键词：拓展性临床试验制度制度发展思考及建议同情用药

Laparoscopic Orchidopexy after 4 Weeks of Testicular Traction with Preservation of Blood Supply: A New Concept for the Treatment of Intra-Abdominal Cryptorchidism: Original Article

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Open Journal of Pediatrics 2024年第2期14卷 205-217页

作者： Ntsobe Tobie Eric Haijin Liu Nyanit Bob Dorcas Wei Peng feng Chen Ndikontar Raymond Kouna Tsala Irene Nadine Qian Liu Surgery Department Garoua General Hospital Garoua Cameroon Paediatric Surgery Department First Affiliated Hospital of Gannan Medical College Ganzhou China Paediatric Surgery Department China Medical University Shenyang China Faculty of Medicine and Biomedical Sciences University of Yaounde I Yaounde Cameroon Paediatric Surgery Department Yaounde Central Hospital Yaounde Cameroon China Traditional Medicine University Nanchang China

Background: Testicular atrophy is recurrent after orchidopexy for intra-abdominal cryptorchidism due to damage to vessels. Fowlers-Stephens and Shehata methods proposed staged orchidopexy, but are still associated to a rate of atrophy greater than 10%. Purpose: We set out to present a new technique that preserves testicular vessels. Our study is aimed at investigating testicular vitality after surgery. Patients and Method: We reviewed files of boys who underwent orchidopexy for 2.years in our department. Those who have been operated for intra-abdominal cryptorchidism with the new technique and aged between 6 months and 14 years old were included in our study. We excluded boys who have been operated before 6 months and after 14 years old and those who did not respect their follow-up plane. Ultrasound (US) outcomes were used to measure testicular volumes and blood flow at each postoperative visit. The Sample population was divided into group A and group B representing testes that were followed respectively for 12.and 2. months. Results: 2. boys with 2. testes were included in our study;11 testes in group A and 14 testes in group B. In each group, we noted a significant difference of UDT volumes from the third month after surgery with respective P-values 0.05. There was no statistical difference between UDT and contra lateral testes volumes 12.months after surgery in group A and 2. months in group B with respective P-values of 0.07 and 0.72. All volume differential indexes were Conclusion: This method offers a new perspective in performing safe orchidopexy for intra abdominal undescended testes.

关键词： Laparoscopy Staged-Orchidopexy Testicar Traction Testicular Atrophy