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A novel small perturbation analytical model to investigate temperature control characteristics of spacecraft thermal systems in frequency domain 认领 引用
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作者 Yuehang SUN Yunze LI +3 位作者 Yupeng ZHOU Ran WEI Hao DANG Xin ZHAO 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第2期100-114,共15页
This paper introduces a small perturbation frequency domain thermal analysis model based on the nonlinear dynamics model.The model can be applied to study the high-precision temperature control of thermal systems unde... This paper introduces a small perturbation frequency domain thermal analysis model based on the nonlinear dynamics model.The model can be applied to study the high-precision temperature control of thermal systems under low-frequency complex perturbations.The frequency domain characteristics of the space gravitational wave detection satellite are analyzed,and a multi-channel perturbation structure is established.The effects of three kinds of heat flow perturbations,including external heat flow,power generation power,and waste heat of electronic equipment,on the temperature through five transfer paths are investigated.It has been discovered that the waste heat from electronic equipment inside the satellite has the most noticeable effect on the temperature power spectral density of temperature-sensitive optical loads,serving as the primary factor influencing thermal stability.For complex noise signals,the small perturbation analysis method can decompose the different frequency components or ranges,reducing the problem to linearized analysis and simplifying complex calculations.The results indicate that the temperature power spectral density decreases as signal frequency increases,with low-frequency signals exerting a greater influence on temperature stability.The small perturbation analysis method is a novel and effective method for temperature control of space thermal systems,with high accuracy and stability. 展开更多
关键词 Frequency domain analysis Gravitational prospecting Perturbation techniques Power spectral density Temperature control
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Toughening FeMn-based high-entropy alloys via retarding phase transformation 认领 引用 被引量：4
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作者 Ran Wei Kaisheng Zhang +7 位作者 Liangbin Chen Zhenhua Han Chen Chen Tan Wang Jianzhong Jiang Tingwei Hu Shaokang Guan Fushan Li 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2020年第16期167-172,共6页
Various high entropy alloys(HEAs)with improved mechanical properties were developed by reducing the phase stability and then promote the phase transformation.The promotion of deformation-induced ma rtensitic transform... Various high entropy alloys(HEAs)with improved mechanical properties were developed by reducing the phase stability and then promote the phase transformation.The promotion of deformation-induced ma rtensitic transformation from face-centered cubic(fcc)to hexagonal close-packed(hcp)mostly focuses on overcoming the trade-off of strength-ductility of HEAs at room temperature.However,the hcp phase is brittle at cryogenic-temperature,and thus the enhancement of cryogenic ductility of these HEAs still remains a challenge.Here,we present a concept to toughening Fe50Mn30Co10Cr10 HEAs at cryogenictemperature via retarding phase transformation.The retarded but more persistent phase transformation at high strain level was realized via tailoring the grain size.To further verify the effect of phase transformation rate on ductility of HEAs,the mechanical properties of Fe40Mn40Co10Cr10 HEAs with higher stacking fault energy were tested at room and cryogenic temperature,respectively.The present study sheds light on developing high perfo rmance HEAs,especially for alloys with brittle phase transformation products. 展开更多
关键词 High-entropy alloys(HEAs) Transformation induced ductility Mechanical properties Cryogenic temperature
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Synthesis of ultrafine dual-phase structure in CrFeCoNiAl0.6high entropy alloy via solid-state phase transformation during sub-rapid solidification 认领 引用 被引量：1
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作者 Chen Chen Yanzhou Fan +8 位作者 Wei Wang Hang Zhang Jialiang Hou Ran Wei Tao Zhang Tan Wang Mo Li Shaokang Guan Fushan Li 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2022年第18期253-260,共8页
High entropy alloys(HEAs)with superb mechanical properties have been traditionally produced by solid-ification and subsequent heat treatment,In this paper,we demonstrate a new route via one-step process using sub-rapi... High entropy alloys(HEAs)with superb mechanical properties have been traditionally produced by solid-ification and subsequent heat treatment,In this paper,we demonstrate a new route via one-step process using sub-rapid cooling.Under proper cooling rates,the CrFeCoNiAl0.6 HEA could form ultrafineFCC+BCC dual-phase structure.By varying cooling rate,we can control the fraction of the BCC phaseand refinement of FCC microstructures that have tunable mechanical properties in yield strength and hardness ranging from~580 to~1460 MPa and~260 to~550 Hv.We show that the structure-property-processing relation originates from the sideplate microstructures formed during fast cooling that havespecific crystallographic orientation relationship between the FCC and BCC phases and chemical segrega tion.This work provides a new setting for better understanding of the solid-state phase transformation in HEAs under sub-rapid solidification conditions as well as a novel method for development of high-performance HEAs. 展开更多
关键词 High entropy allay Cooling rate Orientation Mechanical properties Phase transition
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Gradient-Guided Assembly Instruction Relocation for Adversarial Attacks Against Binary Code Similarity Detection 认领 引用
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作者 Ran Wei Hui Shu 《Computers, Materials & Continua》 SCIE EI 2026年第1期1372-1394,共23页
Transformer-based models have significantly advanced binary code similarity detection(BCSD)by leveraging their semantic encoding capabilities for efficient function matching across diverse compilation settings.Althoug... Transformer-based models have significantly advanced binary code similarity detection(BCSD)by leveraging their semantic encoding capabilities for efficient function matching across diverse compilation settings.Although adversarial examples can strategically undermine the accuracy of BCSD models and protect critical code,existing techniques predominantly depend on inserting artificial instructions,which incur high computational costs and offer limited diversity of perturbations.To address these limitations,we propose AIMA,a novel gradient-guided assembly instruction relocation method.Our method decouples the detection model into tokenization,embedding,and encoding layers to enable efficient gradient computation.Since token IDs of instructions are discrete and nondifferentiable,we compute gradients in the continuous embedding space to evaluate the influence of each token.The most critical tokens are identified by calculating the L2 norm of their embedding gradients.We then establish a mapping between instructions and their corresponding tokens to aggregate token-level importance into instructionlevel significance.To maximize adversarial impact,a sliding window algorithm selects the most influential contiguous segments for relocation,ensuring optimal perturbation with minimal length.This approach efficiently locates critical code regions without expensive search operations.The selected segments are relocated outside their original function boundaries via a jump mechanism,which preserves runtime control flow and functionality while introducing“deletion”effects in the static instruction sequence.Extensive experiments show that AIMA reduces similarity scores by up to 35.8%in state-of-the-art BCSD models.When incorporated into training data,it also enhances model robustness,achieving a 5.9%improvement in AUROC. 展开更多
关键词 Assembly instruction relocation adversary attack binary code similarity detection
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Point mutations of Dicer2 conferred Fusarium asiaticum resistance to RNAi-related biopesticide 认领 引用 被引量：2
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作者 Kaixin Gu Ran Wei +6 位作者 Yidan Sun Xiaoxin Duan Jing Gao Jianxin Wang Yiping Hou Mingguo Zhou Xiushi Song 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2025年第2期623-637,共15页
The use of RNA interference(RNAi)technology to control pests is explored by researchers globally.Even though RNA is a new class of pest control compound unlike conventional chemical pesticides,the evolution of pest re... The use of RNA interference(RNAi)technology to control pests is explored by researchers globally.Even though RNA is a new class of pest control compound unlike conventional chemical pesticides,the evolution of pest resistance needs to be considered.Here,we first investigate RNAi-based biopesticide resistance of Fusarium asiaticum,which is responsible for devastating diseases of plants,for example,Fusarium head blight.Five resistant strains were isolated from 500 strains that treated with UV-mutagenesis.The mutation common to all of the five resistant mutants occurred in the gene encoding Dicer2(point mutations at codon 1005 and 1007),which were under strong purifying selection pressure.To confirm whether the mutations in Dicer2 confer resistance to RNAi,we exchanged the Dicer2 locus between the sensitive strain and the resistant strain by homologous double exchange.The transformed mutants,Dicer2R1005Dand Dicer2E1007H,exhibited resistance to dsRNA in vitro.Further study showed that mutations of R1005D and E1007H affected the intramolecular interactions of Dicer2,resulting in the dysfunction of RNase III domain of Dicer2.The amount of sRNAs produced by Dicer2R1005Dand Dicer2E1007Hwas extremely reduced along with variation of sRNA length.Together,these findings revealed a new potential mechanism of RNAi resistance and provided insight into RNAi-related biopesticide deployment for fungal control. 展开更多
关键词 RNA interference dsRNA Dicer2 point mutation resistance Fusarium asiaticum
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Reverse design of solid propellant grain based on deep learning:Imaging internal ballistic data 认领 引用
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作者 Lin Sun Xiangyu Peng +4 位作者 Yang Liu Shu Long Weihua Hui Ran Wei Futing Bao 《Defence Technology（防务技术）》 SCIE EI CAS CSCD 2025年第8期374-385,共12页
The reverse design of solid rocket motor(SRM)propellant grain involves determining the grain geometry to closely match a predefined internal ballistic curve.While existing reverse design methods are feasible,they ofte... The reverse design of solid rocket motor(SRM)propellant grain involves determining the grain geometry to closely match a predefined internal ballistic curve.While existing reverse design methods are feasible,they often face challenges such as lengthy computation times and limited accuracy.To achieve rapid and accurate matching between the targeted ballistic curve and complex grain shape,this paper proposes a novel reverse design method for SRM propellant grain based on time-series data imaging and convolutional neural network(CNN).First,a finocyl grain shape-internal ballistic curve dataset is created using parametric modeling techniques to comprehensively cover the design space.Next,the internal ballistic time-series data is encoded into three-channel images,establishing a potential relationship between the ballistic curves and their image representations.A CNN is then constructed and trained using these encoded images.Once trained,the model enables efficient inference of propellant grain dimensions from a target internal ballistic curve.This paper conducts comparative experiments across various neural network models,validating the effectiveness of the feature extraction method that transforms internal ballistic time-series data into images,as well as its generalization capability across different CNN architectures.Ignition tests were performed based on the predicted propellant grain.The results demonstrate that the relative error between the experimental internal ballistic curves and the target curves is less than 5%,confirming the validity and feasibility of the proposed reverse design methodology. 展开更多
关键词 SRM Propellant grain reverse design Time-series data imaging CNN
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颅脑术后颅内感染诊断与治疗研究进展 认领 引用
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作者 刘志罡 方丹东 +4 位作者 李庆岗 程岗 张剑宁 饶维 李晓红 《中华神经外科疾病研究杂志》 CAS 2026年第8期136-142,共7页
颅内感染是颅脑手术常见且严重的并发症,可严重影响手术效果。明确其发病现状、致病微生物、诊断要点及治疗措施,对预防和治疗术后颅内感染、达成手术预期目标至关重要。本文对颅脑术后颅内感染的病因、诊断、治疗及预后影响因素的研究... 颅内感染是颅脑手术常见且严重的并发症,可严重影响手术效果。明确其发病现状、致病微生物、诊断要点及治疗措施,对预防和治疗术后颅内感染、达成手术预期目标至关重要。本文对颅脑术后颅内感染的病因、诊断、治疗及预后影响因素的研究进展与观点进行梳理与综述,并探讨长程皮下隧道引流技术的探索性应用,以增进临床医生对该并发症的认识,为诊疗实践提供参考。 展开更多
关键词 颅内感染 颅脑术后 脑脊液长程皮下隧道引流 治疗 预后
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Study on Urban Resilience Based on the Analysis of Supply Guarantee Facilities during Epidemic Closure—A Case Study of Shanghai in 2022 认领 引用
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作者 Jun Wang Ran Wei 《Open Journal of Civil Engineering》 2023年第1期58-82,共25页
In the case of major public emergencies, the ability of cities to resist shocks becomes very important and reflects urban resilience. This paper selected the supply guarantee facilities during the city-wide lockdown o... In the case of major public emergencies, the ability of cities to resist shocks becomes very important and reflects urban resilience. This paper selected the supply guarantee facilities during the city-wide lockdown of Shanghai during March-May 2022 due to COVID-19 pandemic as the research object. In this research, the per capita supply guarantee capacity and supply guarantee overlay intensity were analyzed based on the official list of facilities, and the actual role of the supply guarantee facilities was investigated through a public research questionnaire. The thermodynamic diagram map that was generated based on phone visits reflected the actual distribution of the population. Then the level of “supply guarantee resilience” was evaluated and graded for each district of Shanghai. It was concluded that the overall level of supply guarantee resilience was high in the central city, divergence in the near suburban districts, and generally low in the remote suburban districts. Based on this, the paper summarized the problems of supply guarantee revealed in Shanghai during the epidemic lockdown as well as proposed strategies to improve the resilience of similar scenarios in the future. With the help of big data and public research tools, this paper aimed to provide ways and methods to evaluate the resilience of cities under major public emergencies. 展开更多
关键词 Epidemic Lockdown Supply Guarantee Facilities Urban Resilience
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铷:资源概况、赋存特征、提取工艺与分离纯化技术研究进展 认领 引用
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作者 谢宇 冉伟 +1 位作者 宋银博 韩正伟 《有色金属（冶炼部分）》 CAS 北大核心 2026年第5期955-976,共22页
铷(Rb)作为一种稀有碱金属,具有重要的经济价值,在通信、医疗、航空、新能源及新材料等领域拥有广阔的应用前景。目前,铷主要来源于锂云母、锂辉石和铯榴石等矿物的副产品,但工业上直接从独立铷云母或长石矿床中开采的报道较少。未来,... 铷(Rb)作为一种稀有碱金属,具有重要的经济价值,在通信、医疗、航空、新能源及新材料等领域拥有广阔的应用前景。目前,铷主要来源于锂云母、锂辉石和铯榴石等矿物的副产品,但工业上直接从独立铷云母或长石矿床中开采的报道较少。未来,在将铷作为关键矿产资源进行开发时,需综合考虑其应用潜力、消费需求及技术可行性。然而现有文献表明,相较于锂(Li)、钾(K)、铯(Cs)等其他碱金属,铷资源受到的关注相对较少。本文旨在系统综述铷的生产、价格、未来需求、资源分布、相关化学及湿法冶金工艺,以及作为关键材料所面临的挑战,为深化基础研究、优化工艺开发、推动工业应用及制定资源综合利用方案提供重要参考。 展开更多
关键词 铷 消费 储量 浸出 提取 纯化
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Characterization of volatile and non-volatile compounds in E'se tea across different maturity levels and their correlation with sensory attributes 认领 引用 被引量：1
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作者 Yuhang Wang Noman Walayat +3 位作者 Wen Zhang Jian Zheng Zhucheng Su Ran Wei 《Beverage Plant Research》 CAS 2025年第1期230-241,共12页
In this study,the volatile and non-volatile profiles of tender(EST)and old(ESO)leaves of E'se tea were compared.The results indicated that both EST and ESO were enriched with similar components but in differing pr... In this study,the volatile and non-volatile profiles of tender(EST)and old(ESO)leaves of E'se tea were compared.The results indicated that both EST and ESO were enriched with similar components but in differing proportions.Notably,EST exhibited a significantly higher polyphenol concentration compared to ESO,with phloridzin as the primary phenolic compound in both,albeit at a higher level in EST(151.95 mg/g vs 132.33 mg/g,p1,p<0.05)were identified in both EST and ESO,including 2-hexenal,(E)-,benzaldehyde,and acetophenone.Sensory evaluation further revealed that the EST infusion possessed a more pronounced astringency,thickness,bitterness,and a lingering sweetness,which could be attributed to its higher concentrations of phenolic compounds,free amino acids,and soluble proteins.Overall,EST demonstrated a notable enrichment in both volatile and non-volatile compounds,coupled with a highly favourablE'sensory acceptance,underscoring its promising potential for application in the food industry. 展开更多
关键词 non volatile compounds amino acid ese tea polyphenols phenolic compound volatile compounds sensory attributes maturity levels
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Factors Influencing Nonunion of Fractures and Research Progress in Their Treatment 认领 引用
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作者 Zhengwei Zhu He Huang +1 位作者 Ran Wei Hongchao Liu 《Journal of Biosciences and Medicines》 2025年第2期309-319,共11页
This article focuses on the factors influencing fracture nonunion, classification and treatment. The article emphasizes the importance of understanding the influencing factors and mechanisms of fracture healing for de... This article focuses on the factors influencing fracture nonunion, classification and treatment. The article emphasizes the importance of understanding the influencing factors and mechanisms of fracture healing for developing effective treatment strategies and improving patients’ quality of life. It also points out the challenges of current treatment, such as patient compliance and limitations of treatment methods, and looks at future treatment directions. 展开更多
关键词 Nonunion of Fractures Research Progress Influencing Factor
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On-orbit thermal environment analysis of the optical bench of a new generation of gravity measurement satellites 认领 引用
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作者 Nianjiao Wu Beichen Wang +6 位作者 Kaihang Wu Qilin Hu Ran Wei Shaoying Kang Ming Li Shizhe Wen Huizong Duan 《Geodesy and Geodynamics》 EI CSCD 2025年第6期738-745,共8页
The new generation of gravity measurement satellites will use high-precision inter-satellite laser interferometry technology to measure the gravity field.The heat flow outside the satellite's orbit will act on the... The new generation of gravity measurement satellites will use high-precision inter-satellite laser interferometry technology to measure the gravity field.The heat flow outside the satellite's orbit will act on the optical bench(OB)through laser emission and reception apertures and introduce the temperature noise of the measurement signal.Based on modeling the orbital thermal environment at the incoming aperture and outgoing aperture of the laser designed on the spacecraft front panel,baffles are designed to reduce the heat flow from the apertures into the optical measurement system.The temperature noise of the optical bench caused by space radiation during on-orbit operation was analyzed using finite element simulation software.For the current design of the baffles,the temperature noise of the optical bench is lower than 0.1 K/Hz1/2@1 mHz when the direct solar radiation enters the apertures;when the apertures are in the light-blocking environment,the temperature noise of the optical bench is lower than 0.1 mK/Hz1/2@1 mHz,which meets the temperature noise requirement of a laser interferometer.The baffles are designed to achieve a stable shading period of up to 4 months in a year to facilitate the satellite to carry out ranging work. 展开更多
关键词 Gravity measurement satellite Intersatellite laser interferometry Space radiation environment Baffle Temperature noise
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A single-cell transcriptomic landscape characterizes the endocrine system aging in the mouse 认领 引用
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作者 Ran Wei Zhehao Du +9 位作者 Jue Wang Jinlong Bi Wencong Lyu Haochen Wang Jianuo He Fanju Meng Lijun Zhang Chao Zhang Chen Zhang Wei Tao 《Protein & Cell》 SCIE CAS CSCD 2026年第1期27-45,共19页
The endocrine system is crucial for maintaining overall homeostasis.However,its cellular signatures have not been elucidated during aging.Here,we conducted the first-ever single-cell transcriptomic profiles from eight... The endocrine system is crucial for maintaining overall homeostasis.However,its cellular signatures have not been elucidated during aging.Here,we conducted the first-ever single-cell transcriptomic profiles from eight endocrine organs in young and aged mice,revealing the activation of cell-type-specific aging pathways,such as loss of proteostasis,genomic instability and reactive oxygen species(ROS).Among six sex-shared endocrine organs,aging severely impaired gene expression networks in functional endocrine cells,accompanied by enhanced immune infiltration and unfolded protein response(UPR).Mechanism investigations showed that expanded aging-associated exhausted T cells activated MHC-I-UPR axis across functional endocrine cells by releasing GZMK.The inhibition of GZMK receptors by small chemical molecules counteracted the UPR and senescence,suggesting the immune infiltration is a possible driver of endocrine aging.Machine learning identified CD59 as a novel aging feature in sex-shared functional endocrine cells.For two sex-specific endocrine organs,both aged ovaries and testes showed enhanced immune responses.Meanwhile,cell-type-specific aging-associated transcriptional changes revealed an enhanced ROS mainly in aged theca cells of ovaries,while aged spermatogonia in testes showed impaired DNA repair.This study provides a comprehensive analysis of endocrine system aging at single-cell resolution,offering profound insights into mechanisms of endocrine aging. 展开更多
关键词 single-cell RNA-seq aging endocrine system immune infiltration MHC-I GZMK
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水流扰动环境中微囊藻群体生长及成群分析 认领 引用 被引量：4
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作者 胡怡玲 杨忠勇 +2 位作者 冉薇 杨京 纪道斌 《中国环境科学》 EI CAS CSCD 北大核心 2025年第6期3280-3288,共9页
为探讨水流扰动对微囊藻水华生长和颗粒成群特征的影响,基于水槽开展室内控制实验,设置频率分别为30,40,50,60min-1的水流扰动环境,分析不同条件下微囊藻的生长和群体尺寸变化过程.结果表明,低强度水流扰动(fb0.85).高强度水流扰动(f... 为探讨水流扰动对微囊藻水华生长和颗粒成群特征的影响,基于水槽开展室内控制实验,设置频率分别为30,40,50,60min-1的水流扰动环境,分析不同条件下微囊藻的生长和群体尺寸变化过程.结果表明,低强度水流扰动(fb0.85).高强度水流扰动(fb>50min-1或流速>0.034m/s)则抑制藻类分泌EPS,使叶绿素a浓度与EPS浓度的相关性降低(r2<0.8).在本文所设的流速范围(0~0.08m/s)和湍动能范围(0~0.004m2/s2)内,微囊藻群体尺寸变化较小(0.4~0.6mm).实验中还发现,低强度水流扰动有利于藻类形成表面水华层,且水华层的存续时间较短;而较高强度的水流扰动则抑制藻类聚集成群形成水华层,并延长藻类的存活时间. 展开更多
关键词 微囊藻水华 水体扰动 控制实验 PIV 藻颗粒成群
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盆底超声参数联合盆底肌力强度对初产妇产后压力性尿失禁的预测价值分析 认领 引用
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作者 冉薇 李丹 《中外医药研究》 2026年第8期137-140,共4页
目的:探讨盆底超声参数联合盆底肌力强度对初产妇产后压力性尿失禁(SUI)的预测价值。方法:选取2024年5月—2025年5月于广元市中心医院规律产检并分娩的146例初产妇,根据产后6个月是否存在产后SUI分为SUI组(28例)与非SUI组(118例)。比较... 目的:探讨盆底超声参数联合盆底肌力强度对初产妇产后压力性尿失禁(SUI)的预测价值。方法:选取2024年5月—2025年5月于广元市中心医院规律产检并分娩的146例初产妇,根据产后6个月是否存在产后SUI分为SUI组(28例)与非SUI组(118例)。比较两组一般资料、盆底超声参数、盆底肌力强度。采用多因素Logistic回归分析筛选产后SUI的独立影响因素,绘制受试者工作特征曲线评估盆底肌力强度、盆底超声参数及其联合预测产后SUI的效能。结果:SUI组新生儿出生体质量高于非SUI组(P=0.006);SUI组膀胱颈移动度、尿道旋转角、Valsalva期肛提肌裂孔面积、Valsalva期膀胱尿道后角大于非SUI组(P<0.05),盆底肌肉Ⅰ类与Ⅱ类肌纤维肌力小于非SUI组(P<0.001);膀胱颈移动度增加、盆底肌肉Ⅰ类与Ⅱ类肌纤维肌力下降是产后发生SUI的独立影响因素(P<0.05);膀胱颈移动度、盆底肌肉Ⅰ类与Ⅱ类肌纤维肌联合预测初产妇产后SUI的效能最好(曲线下面积=0.893,P<0.001)。结论:膀胱颈移动度、盆底肌肉Ⅰ类、Ⅱ类肌纤维肌力是产后发生SUI的独立影响因素,三者联合检测可提高预测效能。 展开更多
关键词 压力性尿失禁 初产妇 盆底肌力强度 盆底超声
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膳食炎症指数水平与妇科恶性肿瘤风险的相关性 认领 引用 被引量：2
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作者 张峰莉 王中显 +2 位作者 冉薇 冯小希 莫春艳 《暨南大学学报（自然科学与医学版）》 CAS 北大核心 2025年第1期43-52,共10页
目的:探讨膳食炎症指数(dietary inflammatory index,DII)水平与妇科恶性肿瘤风险的相关性。方法:选取2021年1月至2022年3月在湖北省第三人民医院确诊为妇科恶性肿瘤的52例患者为病例组,同期体检的315例健康者为对照组。通过填写个人史... 目的:探讨膳食炎症指数(dietary inflammatory index,DII)水平与妇科恶性肿瘤风险的相关性。方法:选取2021年1月至2022年3月在湖北省第三人民医院确诊为妇科恶性肿瘤的52例患者为病例组,同期体检的315例健康者为对照组。通过填写个人史问卷和食物频率问卷(FFQ25)收集一般人口学资料及膳食摄入情况,依据中国食物成分表(2002版)计算膳食成分含量,计算个人DII值,运用倾向性评分匹配(propensity score matching,PSM)的方法使队列的基线资料相似,Logistic回归评估DII值与妇科恶性肿瘤风险的相关性。调阅研究对象体检报告,分析炎症指标包括中性粒细胞、淋巴细胞、血小板、中性粒细胞-淋巴细胞比值(neutrophil-to-lymphocyte ratio,NLR)、血小板-淋巴细胞比值(platelet-lymphocyte ratio,PLR)、C反应蛋白(C-reactive protein,CPR)水平。结果:运用多元回归方程分析,未调整混杂变量、调整Ⅰ及调整Ⅱ方案均显示DII值、DII高分值(0.62~4.82)与妇科恶性肿瘤的发生密切相关,差异有统计学意义(P<0.01),同时进行敏感性分析,与未进行PSM前比较,结论一致。运用平滑曲线拟合发现,DII值与妇科恶性肿瘤的发生呈曲线关系;通过阈值分析发现,DII值拐点为1,差异有统计学意义(P<0.01)。病例组炎症指标(NLR、PLR、CPR)水平均高于对照组,差异有统计学意义(P<0.01)。根据阈值分析,将DII分成2组,DII≥1组炎症指标水平均高于DII<1组,差异有统计学意义(P<0.01)。结论:DII值与妇科恶性肿瘤的发生呈曲线关系;DII值可用于预测妇科恶性肿瘤风险,当DII值大于1时,需要高度警惕妇科恶性肿瘤的发生发展。可利用DII值指导居民膳食结构和进行相关营养教育,以预防妇科恶性肿瘤的发生发展。 展开更多
关键词 膳食炎症指数 妇科恶性肿瘤 炎症 倾向性评分匹配
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Deep learning applications in motion management for radiotherapy 认领 引用
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作者 Bining Yang Ran Wei Jianrong Dai 《Intelligent Oncology》 2025年第3期244-255,共12页
The aim of radiotherapy(RT)is to deliver prescribed doses to tumors while sparing neighboring organs at risk.As the demand for treatment precision increases in modern RT,intrafractional motion management becomes criti... The aim of radiotherapy(RT)is to deliver prescribed doses to tumors while sparing neighboring organs at risk.As the demand for treatment precision increases in modern RT,intrafractional motion management becomes critical for achieving high precision,particularly for tumors in the thorax and abdomen that are affected by respiration and other physiological motions.Deep learning(DL)has demonstrated strong po-tential in addressing the limitations of conventional methods by enabling rapid and accurate tumor motion detection,tumor location prediction,and management measures.This review provides a comprehensive overview of recent DL-based applications in intrafractional motion management,which are categorized into three areas:(1)tumor motion detection for real-time tumor localization,(2)tumor location prediction to compensate for the latency of the motion management system,and(3)management measures,including gating and real-time adaptive RT.In addition,this review discusses key challenges and their potential so-lutions for DL-based motion management. 展开更多
关键词 Motion management Deep learning Radiotherapy
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Examining communication effectiveness in multicultural fitness programs-multivariate analyses 认领 引用
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作者 Ran Wei Yuanlong Liu Xinxin Li 《Translational Exercise Biomedicine》 2025年第3期188-200,共13页
Objectives:The objective of this study was to examine communication effectiveness(CE)in conjunction with participant satisfaction in a multicultural fitness program.Methods:Adults from a fitness program site with part... Objectives:The objective of this study was to examine communication effectiveness(CE)in conjunction with participant satisfaction in a multicultural fitness program.Methods:Adults from a fitness program site with participant diversity and multicultural backgrounds were selected and asked to complete a three-part Fitness CE Evaluation Scale questionnaire:CE Questionnaire and Customer Satisfaction(CS)Scale plus a short demographic survey.A sample of 95 participants was recruited from a Midwest Functional 45 Fitness Training Program site in the U.S.A.Multivariate Analysis of Variance(MANOVA)tests were conducted for CE and CS variable vectors.Results:The results showed that there were significant main effects on CE and CS for nationality(p=0.001;p<0.001)and language(p=0.006;p<0.001),but no effect for participation frequency,respectively;there were also significant main effects on CS for gender(p=0.006)and membership type(p=0.019).Univariate tests revealed that domestics and/or first language participants scored significantly higher on reactionto strangers(p=0.001;p=0.001),uncertainty(p<0.001;p<0.001),facilities/services(p<0.001;p<0.001),individual/psychological factor(p=0.009;p=0.034),relaxation(p=0.018;p=0.021),social factor(p<0.001;p=0.002),and health/fitness(p<0.001;p=0.001),respectively.Conclusions:Being highly aware of fitness participants’uncertainty and reaction to strangers can help multicultural fitness program managers or trainers improve their communication effectiveness,which will continue improving their customers’satisfaction. 展开更多
关键词 communication effectiveness customer satisfaction fitness program anxiety/uncertainty management theory multicultural setting
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初始载荷−温度耦合作用对弹簧应力松弛的影响 认领 引用
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作者 金应荣 苏懿 +2 位作者 王心雨 冉渭 贺毅 《西华大学学报（自然科学版）》 CAS 2025年第5期8-16,共9页
研究弹簧应力松弛过程中的微结构变化对于揭示应力松弛机制、改善弹簧服役条件、研发新型弹簧材料具有重要意义。本文借助初始载荷-温度耦合作用,探讨位错脱钉、位错回复两个过程对弹簧应力松弛的影响,并分析弹簧应力松弛后的微观组织... 研究弹簧应力松弛过程中的微结构变化对于揭示应力松弛机制、改善弹簧服役条件、研发新型弹簧材料具有重要意义。本文借助初始载荷-温度耦合作用,探讨位错脱钉、位错回复两个过程对弹簧应力松弛的影响,并分析弹簧应力松弛后的微观组织。结果表明:当初始载荷为设计载荷的70%和80%且试验温度低于393 K时弹簧的载荷损失较大,这是Cottrell气团对位错运动的阻碍作用较弱所致;当初始载荷为设计载荷的90%和100%时,试验温度越高弹簧的载荷损失越大;初始载荷超过设计载荷后,会出现间歇松弛现象,这是位错脱钉与回复协同作用引起的。位错运动引起的应力松弛主要包含位错脱钉与位错回复两个过程,位错脱钉引起弹性应变到塑性应变的转化,回复耗散塑性变形能,随着脱钉与回复过程的进行,材料微结构不断发生变化。 展开更多
关键词 弹簧应力松弛 微细结构演变 位错运动 间歇松弛 初始载荷 Cottrell气团
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A community-derived classification for extant lycophytes and ferns 认领 引用 被引量：181
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作者 Eric Schuettpelz Harald Schneider +91 位作者 Alan R. Smith Peter Hovenkamp Jefferson Prado Germinal Rouhan Alexandre Salino Michael Sundue Thafs Elias Almeida Barbara Parris Emily B. Sessa Ashley R. Field Andre Luis de Gasper Carl J. Rothfels Michael D. Windham Marcus Lehnert Benjamin Dauphin Atsushi Ebihara Samuli Lehtonen Pedro Bond Schwartsburd Jordan Metzgar Li-Bing Zhang Li-Yaung Kuo Patrick J. Brownsey Masahiro Kato Marcelo Daniel Arana Francine C. Assis Michael S. Barker David S. Barrington Ho-Ming Chang Yi-Han Chang Yi-Shan Chao Cheng-Wei Chen De-Kui Chen Wen-Liang Chiou Vinicius Antonio de Oliveira Dittrich Yi-Fan Duan Jean-Yves Dubuisson Donald R. Farrar Susan Fawcett Jose Maria Gabriel y Galan Luiz Armando de Araujo Goes-Neto Jason R. Grant Amanda L. Grusz Christopher Haufler Warren Hauk Hai He Sabine Hennequin Regina Yoshie Hirai Layne Huiet Michael Kessler Petra Korall Paulo H. Labiak Anders Larsson Blanca Leen Chun-Xiang Li Fay-Wei Li Melanie Link-Perez Hong-Mei Liu Ngan Thi Lu Esteban I. Meza-Torres Xin-Yuan Miao Robbin Moran Claudine Massi Mynssens Nathalie Nagalingum Benjamin Ollgaard Alison M. Paul Jovani B. de S. Pereira Leon R. Perrie Monica Ponce Tom A. Ranker Christian Schulz Wataru Shinohara Alexander Shmakov Erin M. Sigel Filipe Soares de Souza Lana da Silva Sylvestre Weston Testo Luz Amparo Triana-Moreno Chie Tsutsumi Hanna Tuomisto IvAn A. Valdespino Alejandra Vasco Raquel Stauffer Viveros Alan Weakley Ran Wei Stina Weststrand Paul G. Wolf George Yatskievych Xiao-Gang Xu Yue-Hong Yan Liang Zhang Xian-Chun Zhang Xin-Mao Zhou 《Journal of Systematics and Evolution》 SCIE CAS CSCD 2016年第6期563-603,共41页
Phylogeny has long informed pteridophyte classification. As our ability to infer evolutionary trees has improved, classifications aimed at recognizing natural groups have become increasingly predictive and stable. Her... Phylogeny has long informed pteridophyte classification. As our ability to infer evolutionary trees has improved, classifications aimed at recognizing natural groups have become increasingly predictive and stable. Here, we provide a modern, comprehensive classification for lycophytes and ferns, down to the genus level, utilizing a community-based approach. We use monophyly as the primary criterion for the recognition of taxa, but also aim to preserve existing taxa and circumscriptions that are both widely accepted and consistent with our understanding of pteridophyte phylogeny. In total, this classification treats an estimated 11 916 species in 337 genera, 51 families, 14 orders, and two classes. This classification is not intended as the final word on lycophyte and fern taxonomy, but rather a summary statement of current hypotheses, derived from the best available data and shaped by those most familiar with the plants in question. We hope that it will serve as a resource for those wanting references to the recent literature on pteridophyte phylogeny and classification, a framework for guiding future investigations, and a stimulus to further discourse. 展开更多
关键词 classification ferns lycophytes monophyly phylogeny pteridophytes.
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