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Responses of arbuscular mycorrhizal fungi to straw return and nitrogen fertilizer reduction in a rainfed maize field

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Pedosphere 2024年第2期34卷 351-360页

作者： Zhenling PENG Hao XI lin mao Huyuan FENG Jianjun ZHANG Yongjun LIU State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems College of EcologyLanzhou UniversityLanzhou 730000China College of Life Sciences Northwest Normal UniversityLanzhou 730070China School of Life Sciences Lanzhou UniversityLanzhou 730000China Dryland Agriculture Institute Gansu Academy of Agricultural SciencesLanzhou 730070China

Straw return can be used to reduce fertilizer input and improve agricultural sustainability and soil ***,how straw return and reduced fertilizer application affect beneficial soil microbes,particularly arbuscular mycorrhizal fungi(AMF),remains poorly ***,we conducted a five-year field experiment in a rainfed maize field on the Loess Plateau of northwestern *** tested four treatments with straw return combined with four nitrogen(N)application rates,i.e.,100%,80%,60%,and 0%of the common N application rate(225 kg N ha^(-1)year^(-1))in this region,and two reference treatments(full or no N application),with three replicates for each *** colonization was quantified and AMF communities colonizing maize roots were characterized using Illumina *** virtual taxa(VTs)of AMF were identified in root samples,among which VT113(related to Rhizophagus fasciculatus)and VT156(related to Dominikia gansuensis)were the predominant *** root length colonization and AMF VT richness were sensitive to N fertilization,but not to straw return;furthermore,both gradually increased with decreasing N application *** VT composition of the AMF community was also affected by N fertilization,but not by straw return,and the community variation could be well explained by soil available N and phosphorus ***,60%,80%,and full N fertilization produced similar maize ***,our study revealed the response patterns of AMF to straw return and N fertilizer reduction and showed that straw return combined with N fertilizer reduction may be a promising practice to maintain mycorrhizal symbiosis concomitantly with crop productivity.

关键词： agricultural sustainability crop productivity mycorrhizal colonization mycorrhizal symbiosis root length colonization virtual taxon

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Method for rapid warning and activity concentration estimates in online waterγ-spectrometry systems

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Nuclear Science and Techniques 2024年第3期35卷 1-12页

作者： Meng Wang Yi Gu mao-lin Xiong Liang-Quan Ge Qing-Xian Zhang Guo-Qiang Zeng Heng Lu Sheng-Liang Guo College of Nuclear Technology and Automation Engineering Chengdu University of TechnologyChengdu 610059China Applied Nuclear Technology in Geosciences Key Laboratory of Sichuan Province (Chengdu University of Technology)Chengdu 610059China Chengdu New Ray Technology Co.Ltd Chengdu 610052China

Onlineγ-spectrometry systems for inland waters,most of which extract samples in situ and in real time,are able to produce reliable activity concentration measurements for waterborne radionuclides only when they are distributed relatively uniformly and enter into a steady-state diffusion regime in the measurement *** protect residents’health and ensure the safety of the living environment,better timeliness is required for this measurement *** address this issue,this study established a mathematical model of the online waterγ-spectrometry system so that rapid warning and activity estimates can be obtained for water under non-steady-state(NSS)*** addition,the detection efficiency of the detector for radionuclides during the NSS diffusion process was determined by applying the computational fluid dynamics technique in conjunction with Monte Carlo *** this basis,a method was developed that allowed the online waterγ-spectrometry system to provide rapid warning and activity concentration estimates for radionuclides in *** analysis of the NSS-mode measurements of^(40)K radioactive solutions with different activity concentrations determined the optimum warning threshold and measurement time for producing accurate activity concentration estimates for *** experimental results show that the proposed NSS measurement method is able to give warning and yield accurate activity concentration estimates for radionuclides 55.42 and 69.42 min after the entry of a 10 Bq/L^(40)K radioactive solution into the measurement chamber,*** times are much shorter than the 90 min required by the conventional measurement ***,the NSS measurement method allows the measurement system to give rapid(within approximately 15 min)warning when the activity concentrations of some radionuclides reach their respective limits stipulated in the Guidelines for Drinking-water Quality of the WHO,suggesting that this method con

关键词： Water radioactivity monitoring Dynamic detection efficiency Rapid warning Activity estimation

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Portal vein embolization combined with ex vivo liver resection and autotransplantation: A novel treatment strategy for end-stage and metastatic hepatic alveolar echinococcosis

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Hepatobiliary & Pancreatic Diseases International 2024年第2期23卷 210-216页

作者： Qiang Guo mao-lin Wang Kai Zhong Jia-Long Li Tie-Min Jiang Hao Wen Tuerganaili Aji Ying-Mei Shao Department of Hepatobiliary and Echinococcosis Surgery Digestive and Vascular Surgery CenterFirst Affiliated Hospital of Xinjiang Medical UniversityUrumqi 830054China Clinical Medical Research Center of Echinococcosis and Hepatobiliary Disease of Xinjiang Uygur Autonomous Region Urumqi 830054China State Key Laboratory of Pathogenesis Prevention and Treatment of High Incidence Diseases in Central AsiaXinjiang Medical UniversityUrumqi 830054China

Alveolar echinococcosis(AE)is a lethal parasitic disease caused by Echinococcus multilocularis larvae,and more than 90%of pri-mary AE lesions occur in the *** of the affected individ-uals remain asymptomatic and the disease is often diagnosed at an advanced *** infection may spread to organs adjacent to the liver or distant locations,eventually causing end-stage multi-ple organ *** metastasis of AE is the most fatal with an inci-dence rate of 0.2%[1].

关键词： organs echinococcosis metastasis

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Babao Dan Inhibits Gastric Cancer Progression in vivo Through Multiple Signaling Pathways

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World Journal of Traditional Chinese Medicine 2024年第1期10卷 14-21页

作者： Hai-Xia Shang Yi Fang Bin Guan Jian-Hua Guan Jun Peng Jin-Yan Zhao Jiu-mao lin Institute of Oncology of Academy of Integrative Medicine Fujian University of Traditional Chinese MedicineFuzhouFujianChina Key Laboratory of Integrative Medicine of Fujian Province University Fujian University of Traditional Chinese MedicineFuzhouFujianChina Fujian Key Laboratory of Integrative Medicine on Geriatric Fujian University of Traditional Chinese MedicineFuzhouFujianChina Innovation and Transformation Center Fujian University of Traditional Chinese MedicineFuzhouFujianChina Xiamen Traditional Chinese Medicine Co. Ltd.XiamenFujianChina

Objective:The aim of this study was to explore the effects of Babao dan(BBD),a traditional Chinese medicine,on gastric cancer(GC)progression in *** and Methods:A subcutaneous xenograft mouse model of GC was established using MGC80-3 *** terminal deoxynucleotidyl transferase-mediated dUTP:2'-deoxyuridine 5'-triphosphate-biotin nick-end labeling method was adopted to detect cell apoptosis in *** expression levels of proteins associated with proliferation,apoptosis,and angiogenesis were measured by immunohistochemical staining or western blotting(WB).The activation and protein levels of p-c-Jun N-terminal kinase(JNK),p-p38,p-extracellular-regulated kinase 1/2,p-nuclear factor-κB(NF-κB),and p-STAT3 were examined by Bio-plex and ***:BBD significantly inhibited tumor growth in GC mouse models with no adverse effect on body weight or organ *** was also found that BBD significantly suppressed the proliferation of GC tumor cells,induced the apoptosis of tumor cells,and inhibited angiogenesis through inactivating with mitogen-activated protein kinase,NF-κB,and STAT3 ***:BBD exerts suppressive effects on GC tumor growth by regulating multiple pathways in vivo,which may provide a novel treatment option for GC therapy.

关键词： Babao dan gastric cancer multiple signaling pathways proliferation traditional Chinese medicine

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The cardiovascular system at high altitude:A bibliometric and visualization analysis

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World Journal of Cardiology 2024年第4期16卷 199-214页

作者： mao-lin Zhao Zhong-Jie Lu Li Yang Sheng Ding Feng Gao Yuan-Zhang Liu Xue-lin Yang Xia Li Si-Yi He Department of Cardiovascular Surgery The General Hospital of Western Theater CommandCollege of MedicineSouthwest Jiaotong UniversityChengdu 610083Sichuan ProvinceChina Department of Cardiovascular Surgery The General Hospital of Western Theater CommandChengdu 610083Sichuan ProvinceChina

BACKGROUND When exposed to high-altitude environments,the cardiovascular system undergoes various changes,the performance and mechanisms of which remain *** To summarize the latest research advancements and hot research points in the cardiovascular system at high altitude by conducting a bibliometric and visualization *** The literature was systematically retrieved and filtered using the Web of Science Core Collection of Science Citation Index Expanded.A visualization analysis of the identified publications was conducted employing CiteSpace and *** A total of 1674 publications were included in the study,with an observed annual increase in the number of publications spanning from 1990 to *** United States of America emerged as the predominant contributor,while Universidad Peruana Cayetano Heredia stood out as the institution with the highest publication ***,Jean-Paul Richalet demonstrated the highest productivity among researchers focusing on the cardiovascular system at high ***,Peter Bärtsch emerged as the author with the highest number of cited *** analysis identified hypoxia,exercise,acclimatization,acute and chronic mountain sickness,pulmonary hypertension,metabolism,and echocardiography as the primary research hot research points and emerging directions in the study of the cardiovascular system at high *** Over the past 32 years,research on the cardiovascular system in high-altitude regions has been steadily *** research in this field may focus on areas such as hypoxia adaptation,metabolism,and cardiopulmonary *** interdisciplinary and multi-team collaborations will facilitate further exploration of the pathophysiological mechanisms underlying cardiovascular changes in high-altitude environments and provide a theoretical basis for standardized disease diagnosis and treatment.

关键词： Cardiovascular system High altitude Hypoxia Bibliometric analysis Visualization

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融入概率学习的混合差分进化算法求解绿色分布式可重入作业车间调度

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控制理论与应用 2024年第3期41卷 512-521页

作者：胡蓉伍星毛剑琳钱斌昆明理工大学信息工程与自动化学院云南昆明650500 云南机电职业技术学院云南昆明650000 昆明理工大学机电工程学院云南昆明650500

本文针对绿色分布式可重入作业车间调度问题(GDRJSSP),提出一种融入概率学习的混合差分进化算法(HDE PL),以实现最大完工时间和总能耗最小.根据GDRJSSP的问题特点,设计编码和解码规则,并采用差分进化算法执行全局搜索来发现优质解区域.... 详细信息

本文针对绿色分布式可重入作业车间调度问题(GDRJSSP),提出一种融入概率学习的混合差分进化算法(HDE PL),以实现最大完工时间和总能耗最小.根据GDRJSSP的问题特点,设计编码和解码规则,并采用差分进化算法执行全局搜索来发现优质解区域.为能更明确地引导全局搜索方向,设计基于贝叶斯网络结构的多维概率模型合理学习和积累优质解(即当前种群中的较优解)的模式信息.结合问题解的结构特征,提出基于关键路径的4种邻域结构来构造局部搜索,并设计基于非关键路径的节能策略来提升算法获取低能耗非劣解的能力.仿真实验和算法对比验证了HDE PL可有效求解GDRJSSP.

关键词：差分进化绿色调度分布式调度可重入作业车间调度问题

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“挤入”抑或“挤出”:财政转移支付对消费的影响——基于家庭债务异质性视角

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湘潭大学学报（哲学社会科学版） 2024年第4期48卷 104-111,142页

作者：毛凌琳郭新华湘潭大学商学院湖南湘潭411105 湖南文理学院经济与管理学院湖南常德415000

深刻理解家庭债务异质性背景下财政转移支付对家庭消费的影响及其作用机理,这对政府制定财政转移支付政策具有重要价值。使用中国家庭追踪调查(CFPS)2014、2016和2018年三轮面板数据,以及2006—2021年省级面板数据,实证考察了家庭债务... 详细信息

深刻理解家庭债务异质性背景下财政转移支付对家庭消费的影响及其作用机理,这对政府制定财政转移支付政策具有重要价值。使用中国家庭追踪调查(CFPS)2014、2016和2018年三轮面板数据,以及2006—2021年省级面板数据,实证考察了家庭债务异质性视角下财政转移支付的消费效应。实证结果表明:财政转移支付的增加挤入了家庭消费,随着家庭债务水平的提高,财政转移支付对家庭消费的挤入效应减弱,且家庭债务异质性导致的家庭消费水平和消费结构对财政转移支付冲击的反应存在差异;家庭债务异质性视角下财政转移支付对消费的影响可通过流动性约束和预防性储蓄两个渠道发挥作用;不同区域的家庭债务水平对财政转移支付的消费效应具有不同的影响。因此,政府应该考虑区域债务水平的差异来制定财政转移支付政策,并合理控制家庭部门杠杆水平,降低家庭经济风险,提振消费。

关键词：家庭债务财政转移支付异质性消费

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基于狮子洋通道工程2号隧道分析并行基坑对邻近地铁结构的影响

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公路 2024年第7期69卷 204-209页

作者：仝瑞金蒋茂林广州南沙交通投资集团有限公司广州市511455 中交第二公路勘察设计研究院有限公司武汉市430056

通过创建二维、三维有限元模型,分析狮子洋通道工程2号隧道基坑开挖对广州地铁18号线风井和区间的影响。验证基坑围护结构设计的合理性,分析二维模型及三维模型的差异,研究了既有结构位移同基坑开挖深度、地铁结构类型之间的关系。研究... 详细信息

通过创建二维、三维有限元模型,分析狮子洋通道工程2号隧道基坑开挖对广州地铁18号线风井和区间的影响。验证基坑围护结构设计的合理性,分析二维模型及三维模型的差异,研究了既有结构位移同基坑开挖深度、地铁结构类型之间的关系。研究可为邻近基坑的地铁结构分析提供参考。

关键词：狮子洋通道既有地铁邻近基坑基坑围护结构有限元位移

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静电悬浮条件下液态Zr_(60)Ni_(25)Al_(15)合金的热物理性质与快速凝固机制

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物理学报 2024年第8期73卷 287-295页

作者：金英捷耿德路林茂杰胡亮魏炳波西北工业大学物理科学与技术学院西安710072

采用静电悬浮实验技术测定了液态Zr_(60)Ni_(25)Al_(15)合金的热物理性质,并研究了其深过冷快速凝固过程.实验发现,液态合金所获得的最大过冷度可达316 K(0.25TL),其密度和表面张力与温度呈线性关系,而黏度则随温度呈指数变化.当过冷度... 详细信息

采用静电悬浮实验技术测定了液态Zr_(60)Ni_(25)Al_(15)合金的热物理性质,并研究了其深过冷快速凝固过程.实验发现,液态合金所获得的最大过冷度可达316 K(0.25TL),其密度和表面张力与温度呈线性关系,而黏度则随温度呈指数变化.当过冷度小于259 K时,凝固过程中发生两次再辉现象,分别对应着二相(Zr_(6)Al_(2)Ni+Zr_(5)Ni_(4)Al)共晶和三元(Zr_(6)Al_(2)Ni+Zr_(5)Ni_(4)Al+Zr_(2)Ni)共晶的快速生长.若过冷度超过259 K,凝固过程只发生一次再辉,3个化合物相均可从合金熔体中独立形核,形成三元不规则共晶组织.理论计算和实验表明,小过冷时Zr_(6)Al_(2)Ni相优先形核,而当过冷度足够大时,三相能够同时形核.

关键词：静电悬浮液态金属快速凝固共晶生长

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基于边界辅助的弱监督语义分割网络

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计算机应用研究 2024年第2期41卷 623-628,634页

作者：杨大伟迟津生毛琳大连民族大学机电工程学院辽宁大连116600

由于弱监督语义分割任务中种子区域的随机生长机制,导致弱监督语义分割网络经常出现错分割和漏分割的问题,为此,提出一种基于边界辅助的弱监督语义分割网络。该网络利用边界信息和语义信息,为种子区域的生长提供参考,使种子区域可以自... 详细信息

由于弱监督语义分割任务中种子区域的随机生长机制,导致弱监督语义分割网络经常出现错分割和漏分割的问题,为此,提出一种基于边界辅助的弱监督语义分割网络。该网络利用边界信息和语义信息,为种子区域的生长提供参考,使种子区域可以自然生长至目标边界,并在目标被遮挡或重叠时正确区分目标类别,生成可以覆盖更完整目标的伪像素掩码。以此伪像素掩码作为监督信息训练分割网络,可以改善弱监督语义分割网络由于伪像素掩码无法准确覆盖目标区域导致的错分割和漏分割问题,提升弱监督语义分割网络精度。在通用数据集PASCAL VOC 2012验证集和测试集上对该网络进行评估,mIoU分别达到71.7%和73.2%。实验结果表明,其网络性能优于当前大多数图像级弱监督语义分割方法。

关键词：弱监督学习语义分割种子区域伪像素掩码

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