期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到3,601篇文章
< 1 2 … 181 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Improving MCUCN code to simulate ultracold neutron storage and transportation in superfluid4He 认领 引用
1
作者 Xue-Fen Han Fei Shen +6 位作者 Bin Zhou Xiao-Xiao Cai Tian-Cheng Yi Zhi-Liang Hu Song-Lin Wang Tian-Jiao Liang Robert Golub 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第3期235-246,共12页
The ultracold neutron(UCN)transport code,MCUCN,designed initially for simulating UCN transportation from a solid deuterium(SD_2)source and neutron electric dipole moment experiments,could not simulate UCN storage and ... The ultracold neutron(UCN)transport code,MCUCN,designed initially for simulating UCN transportation from a solid deuterium(SD_2)source and neutron electric dipole moment experiments,could not simulate UCN storage and transportation in a superfluid4He(SFHe,He-Ⅱ)source accurately.This limitation arose from the absence of an4He upscattering mechanism and the absorption of3He.And the provided source energy distribution in MCUCN is different from that in SFHe source.This study introduced enhancements to MCUCN to address these constraints,explicitly incorporating the4He upscattering effect,the absorption of3He,the loss caused by impurities on converter wall,UCN source energy distribution in SFHe,and the transmission through negative optical potential.Additionally,a Python-based visualization code for intermediate states and results was developed.To validate these enhancements,we systematically compared the simulation results of the Lujan Center Mark3 UCN system by MCUCN and the improved MCUCN code(iMCUCN)with UCNtransport simulations.Additionally,we compared the results of the SUN1 system simulated by MCUCN and iMCUCN with measurement results.The study demonstrates that iMCUCN effectively simulates the storage and transportation of ultracold neutrons in He-Ⅱ. 展开更多
关键词 Ultracold neutron Storage Transportation Improved MCUCN code Upscattering effect Absorption by3He
暂未订购 下载PDF
Improving diagnostic accuracy of 72-hour supervised fasting test for hypoglycemia evaluation:A quality improvement project 认领 引用
2
作者 Fateen Ata Adeel Ahmad Khan +4 位作者 Mohammad Zeyad Mohammad Nofal Elabbass A Abdelmahmuod Rabia Fawad Dabia Al Mohanadi Zeinab Dabbous 《World Journal of Methodology》 2026年第2期7-14,共8页
The 72-hour supervised fasting test(72-HSFT)remains the gold standard for investigating fasting hypoglycemia in patients without diabetes,which is a rare but potentially fatal clinical condition.However,testing inaccu... The 72-hour supervised fasting test(72-HSFT)remains the gold standard for investigating fasting hypoglycemia in patients without diabetes,which is a rare but potentially fatal clinical condition.However,testing inaccuracies often lead to diagnostic ambiguities and unnecessary healthcare expenditures.Baseline data collection over 1 year revealed that 66%of 72-HSFT tests at our institution were performed incorrectly,with dynamic hormones such as C-peptide being ordered four times per patient.The goal of this quality improvement project(QIP)was to reduce the frequency of unnecessary or incorrect 72-HSFT for hypoglycemia from 66%to 25%within 24 months.To achieve the goals of the QIP,educational interventions targeting patients,nurses,physicians,and laboratory staff on accurate 72-HSFT were implemented.Further interventions included the introduction of an auto-text protocol in Cerner®,standardization of lab testing via a bundle order set for 72-HSFT,and multiple different models of interactive educational sessions.The project was conducted in the emergency department and the inpatient wards of the medicine department.In a plan-do-study-act 1 cycle,testing inaccuracy was reduced from 66%to 20%,with C-peptide orders reducing from 4 tests to 1.2 tests per patient.In plan-do-study-act 2,testing inaccuracy dropped to 0%with one C-peptide test ordered per patient.This QIP demonstrates that system-level changes,combined with conventional interventions such as targeted education and advanced technology-based interventions like clinical decision support tools,can significantly improve test accuracy and reduce unnecessary resource utilization in endocrinological diagnostics. 展开更多
关键词 Hypoglycemia Fasting hypoglycemia Quality improvement 72-hour supervised fast C-Peptide Insulin
暂未订购 下载PDF
Serving Up a Better Life China's services sector is improving lives,creating jobs,and driving consumption 认领 引用
3
作者 Chen Ke 《China Report ASEAN》 2026年第7期26-28,共3页
Delivery riders weave through bustling streets,home-service workers arrive with a simple tap on a phone,and 15-minute community life circles empower residents to handle everyday errands close to home.These scenes illu... Delivery riders weave through bustling streets,home-service workers arrive with a simple tap on a phone,and 15-minute community life circles empower residents to handle everyday errands close to home.These scenes illustrate how China's services sector is improving people's daily lives. 展开更多
关键词 services sector improving lives driving consumption minute community life circles creating jobs delivery riders home service workers
暂未订购 下载PDF
Efficacy of dynamic interpersonal therapy in improving mentalising in patients with major depressive disorder and the mediating effect of mentalising on changes in depressive symptoms 认领 引用 被引量：1
4
作者 Wenhui Jiang Jiayu Yao +4 位作者 Yuan Wang Shanshan Su Ziwei Zheng Yang Yang Jianyin Qiu 《General Psychiatry》 CAS CSCD 2025年第1期16-25,共10页
Background Dynamic interpersonal therapy(DIT)is a short-term psychodynamic psychotherapy that has been shown to effectively reduce depressive symptoms in patients with major depressive disorder(MDD).In DIT,the depress... Background Dynamic interpersonal therapy(DIT)is a short-term psychodynamic psychotherapy that has been shown to effectively reduce depressive symptoms in patients with major depressive disorder(MDD).In DIT,the depressive symptoms are formulated as responses to impaired mentalisation.DIT aims to alleviate depressive symptoms by improving mentalising.Aims This study aimed to examine the effect of DIT on improving mentalising and the mediating effect of mentalising in changes in depressive symptoms.Methods Outpatients received either DIT combined with antidepressant medication treatment(DIT group)or antidepressant medication treatment alone(ADM group)for 16 weeks.The Hamilton Depression Rating Scale(HAMD),Patient Health Questionnaire(PHQ)and Reflective Functioning Questionnaire(RFQ)were used.The intention-to-treat principle,mixed linear models,multiple imputation,Pearson's correlation analysis and mediation analysis were conducted.The per-protocol principle was used as sensitivity analysis.Results The DIT group had significantly lower HAMD(least-squares(LS)mean difference=-3.756,p<0.001),PHQ(LS mean difference=-4.188,p<0.001),uncertainty about mental states in the RFQ(RFQ-U,LS mean difference=-2.116,p<0.001)and higher certainty about mental states in the RFQ(RFQ-C,LS mean difference=2.214,p=0.028)scores than the ADM group at post-treatment.The change in RFQ-C was marginally significantly correlated with the change in HAMD(r=-0.218,poretao=0.090),The change in RFQ-U was significantly correlated with the change in HAMD(r=-0.269,poroco-0.024)and the change in PHQ(r=-0.43,Peoretceo l<e0.001).When using RFQ-U as the mediating variable and PHQ as the dependent variable,a significant mediating effect was found(p=0.043,95% confidence interval 0.024 to 1.453).Conclusions The DIT group yielded better outcomes compared with the ADM group in reducing depressive symptoms and improving mentalising.Improvements in mentalising were associated with reductions in depressive symptoms.These findings support that mentalising may contribute to the therapeutic effects of DIT in MDD. 展开更多
关键词 alleviate depressive symptoms Mentalising dynamic interpersonal therapy dit improving mentalising improving mentalisingaims reduce depressive symptoms psychodynamic psychotherapy depressive symptoms
暂未订购 下载PDF
Constructing fiber bridging network of polyvinylidene fluoride at interlayer of carbon fiber reinforced polymer via electrospinning for improving flexural performance 认领 引用
5
作者 Xiang YUAN Jiaxin HE +7 位作者 Yanan LYU Fei CHENG Boris FEDULOV Evgeny LOMAKIN Hao LIU Shuying SHI Xiaozhi HU Xi CHEN 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第7期693-710,共18页
To address the interfacial failure caused by insufficient interlaminar bonding in Carbon Fiber Reinforced Polymer(CFRP)composites,an effective electro spinning technique is proposed to prepare the Polyethylene-co-Male... To address the interfacial failure caused by insufficient interlaminar bonding in Carbon Fiber Reinforced Polymer(CFRP)composites,an effective electro spinning technique is proposed to prepare the Polyethylene-co-Maleic Anhydride(PEMA)modified Polyvinylidene Fluoride(PVDF)fibers on CF fabrics to improve the flexural performance.Testing results show that the prepared PVDF fibers had various diameters varying from several hundred nanometers to several micrometer and were disordered to form semi-bonded PVDF-CF integrated structure.CFRP composite with PVDF areal density of 0.16 g/m2 yielded the greatest flexural strength of 888.24 MPa and post-impact residual flexural strength of 122.05 MPa,exhibiting 25.1%and 68.6%increments respectively.Fiber trunks of PVDF were relatively stable and fiber ends were free-moved,which made them easier to construct fiber bridging network in situ compared with the fiber agglomeration of directly introducing fiber.The PVDF fibers bridging network at the interlayer could improve brittle epoxy resin,embed interfacial transition region and even penetrate adjacent CF,forming a three-dimensional interlocking that suppressed micro-crack generation and propagation.This contributed to failure modes changing from delamination dominated failure of unreinforced CFRP composites to shear-dominated failure of PVDF-reinforced composites.Overall,electro spinning method could provide an important alternative for manufacturing high-performance laminated FRP composites in industrial field. 展开更多
关键词 Carbon fiber reinforced polymer Electrospinning Fiber bridging Flexural performance improvement Polyvinylidene fluoride
暂未订购 下载PDF
Improving Early Sepsis Recognition and Timely Antibiotic Administration in the Emergency Department:A PDCA-Based Quality Improvement Initiative 认领 引用
6
作者 Xiaojuan Zhu Haoran Wang Hee King Su 《Journal of Clinical and Nursing Research》 2026年第6期165-170,共6页
Background:Sepsis is a life-threatening condition associated with substantial morbidity,mortality,and healthcare utilization.In the emergency department(ED),early recognition and prompt antibiotic administration are e... Background:Sepsis is a life-threatening condition associated with substantial morbidity,mortality,and healthcare utilization.In the emergency department(ED),early recognition and prompt antibiotic administration are essential components of high-quality care.In 2024,compliance with timely antibiotic administration for sepsis in our ED fell below the institutional target,with recurrent delays observed in obstetric and gynecologic(OB-GYN)presentations.Objective:To improve early sepsis recognition and increase the rate of timely antibiotic administration in the ED using a Plan-Do-Check-Act(PDCA)quality improvement framework.Methods:We conducted a single-center quality improvement initiative in the ED of Beijing United Family Hospital.Interventions included implementation of a triage sepsis alert,screening with the National Early Warning Score 2(NEWS2),a standardized sepsis order set,workflow standardization,targeted staff education on atypical and OB-GYN sepsis presentations,and monthly auditand-feedback cycles.The primary outcome was the proportion of ED patients with sepsis or septic shock who received antibiotics within the target time window after recognition.Secondary process measures included time from triage to antibiotic order,time from order to administration,and time from triage to first antibiotic dose.Results:Following implementation,timely antibiotic administration improved from 33%at baseline to 100%from August 2024 through January 2025.Although monthly case numbers were small,sustained full compliance across consecutive months suggested improved process reliability.The mean time from triage to antibiotic order was approximately 5 minutes,the mean time from order to administration was approximately 6 minutes,and the mean time from triage to first antibiotic dose was approximately 11 minutes.Conclusion:A PDCA-based sepsis quality improvement initiative was associated with substantial and sustained improvement in timely antibiotic administration in the ED.Standardized recognition processes,clear escalation pathways,and continuous feedback may improve the reliability of sepsis care,including in atypical presentations such as OB-GYN cases. 展开更多
关键词 Sepsis Septic shock Emergency department Quality improvement PDCA Antibiotics NEWS2
暂未订购 下载PDF
Synergistic effect of modified ethylene-vinyl acetate and asphaltenes on improving the flow properties of model oil 认领 引用 被引量：1
7
作者 Yang Liu Zheng-Nan Sun +3 位作者 Guo-Lin Jing Yi-Hai Yang Hui Jiang Xiao-Yan Liu 《Petroleum Science》 SCIE EI CAS CSCD 2025年第2期925-934,共10页
The effect of alcoholic polyethylene-vinyl acetate(EVA)product ethylene-vinyl alcohol copolymer(EVAL)on the low-temperature flow properties of model oil containing asphaltene(ASP)was investigated.The change of wax cry... The effect of alcoholic polyethylene-vinyl acetate(EVA)product ethylene-vinyl alcohol copolymer(EVAL)on the low-temperature flow properties of model oil containing asphaltene(ASP)was investigated.The change of wax crystal microscopic morphology of model oil before and after modification were examined,and the influence of asphaltene mass fraction on the rheological improvement effect of EVAL was analyzed.The composite system of EVAL and asphaltene significantly reduced the pour point,gel point,apparent viscosity,storage modulus and loss modulus of waxy oil at low temperatures.When the EVAL concentration is 400 ppm and the asphaltene mass fraction is 0.5 wt%,the synergistic effect of the two is optimal,which can reduce the pour point by 17℃and the modulus value by more than 98%.The introduction of EVAL strengthens the interaction between asphaltenes and wax crystals,forming EVALASP aggregates,which promote the adsorption of wax crystals on asphaltenes to form composite particles,and the polar groups prevent the aggregation of wax crystals and reduce the size of wax crystals,thus greatly improving the fluidity of waxy oils. 展开更多
关键词 Asphaltene EVAL Model oil Wax Flow improver
暂未订购 下载PDF
New high-efficiency system for improving oil recovery based on the superwetting phenomenon 认领 引用
8
作者 ZHOU Zhaohui ZHANG Xiaojie +5 位作者 ZHANG Qun JIA Ninghong HAN Lu ZHANG Lei ZHANG Lu LYU Weifeng 《Petroleum Exploration and Development》 SCIE 2025年第5期1301-1313,共13页
Given that a large amount of crude oil remains on the surface of rocks and is difficult to produce after conventional waterflooding,a new superwetting oil displacement system incorporating the synergy between a hydrox... Given that a large amount of crude oil remains on the surface of rocks and is difficult to produce after conventional waterflooding,a new superwetting oil displacement system incorporating the synergy between a hydroxyl anion compound(1OH-1C)and an extended surfactant(S-C13PO13S)was designed.The interfacial tension,contact angle and emulsification performance of the system were measured.The oil displacement effects and improved oil recovery(IOR)mechanisms of 1OH-1C,S-C13PO13S and their compound system were investigated by microscopic visualization oil displacement experiments and core displacement experiments.The results show that 1OH-1C creates a superwetting interface and electrostatic separation pressure on the solid surface,which destroys the strong interactions between crude oil and quartz to peel off the oil film.S-C13PO13S has low interfacial tension,which can promote the flow of remaining oil and emulsify it into oil-in-water emulsions.The compound system of 1OH-1C and S-C13PO13S has both superwettability and low IFT,which can effectively improve oil recovery through a synergistic effect.The oil displacement experiment of low-permeability natural core shows that the compound solution can increase the oil recovery by 16.4 percentage points after waterflooding.This new high-efficiency system is promising for greatly improving oil recovery in low-permeability reservoirs. 展开更多
关键词 superwettability hydroxyl anionic compound extended surfactant synergy oil displacement mechanism chemical flooding improved oil recovery
暂未订购 下载PDF
Energy Efficient Clustering and Sink Mobility Protocol Using Hybrid Golden Jackal and Improved Whale Optimization Algorithm for Improving Network Longevity in WSNs 认领 引用
9
作者 S B Lenin R Sugumar +2 位作者 J S Adeline Johnsana N Tamilarasan R Nathiya 《China Communications》 SCIE EI CSCD 2025年第3期16-35,共20页
Reliable Cluster Head(CH)selectionbased routing protocols are necessary for increasing the packet transmission efficiency with optimal path discovery that never introduces degradation over the transmission reliability... Reliable Cluster Head(CH)selectionbased routing protocols are necessary for increasing the packet transmission efficiency with optimal path discovery that never introduces degradation over the transmission reliability.In this paper,Hybrid Golden Jackal,and Improved Whale Optimization Algorithm(HGJIWOA)is proposed as an effective and optimal routing protocol that guarantees efficient routing of data packets in the established between the CHs and the movable sink.This HGJIWOA included the phases of Dynamic Lens-Imaging Learning Strategy and Novel Update Rules for determining the reliable route essential for data packets broadcasting attained through fitness measure estimation-based CH selection.The process of CH selection achieved using Golden Jackal Optimization Algorithm(GJOA)completely depends on the factors of maintainability,consistency,trust,delay,and energy.The adopted GJOA algorithm play a dominant role in determining the optimal path of routing depending on the parameter of reduced delay and minimal distance.It further utilized Improved Whale Optimisation Algorithm(IWOA)for forwarding the data from chosen CHs to the BS via optimized route depending on the parameters of energy and distance.It also included a reliable route maintenance process that aids in deciding the selected route through which data need to be transmitted or re-routed.The simulation outcomes of the proposed HGJIWOA mechanism with different sensor nodes confirmed an improved mean throughput of 18.21%,sustained residual energy of 19.64%with minimized end-to-end delay of 21.82%,better than the competitive CH selection approaches. 展开更多
关键词 Cluster Heads(CHs) Golden Jackal Optimization Algorithm(GJOA) Improved Whale Optimization Algorithm(IWOA) unequal clustering
暂未订购 下载PDF
The rational design of multiple molecular module-based assemblies for simultaneously improving rice yield and grain quality 认领 引用 被引量：12
10
作者 Kun Wu Xiaopeng Xu +5 位作者 Nan Zhong Haixiang Huang Jianping Yu Yafeng Ye Yuejin Wu Xiangdong Fu 《Journal of Genetics and Genomics》 SCIE CAS CSCD 2018年第6期337-341,共5页
Rice is one of the most important staple food for over half of the world＇s population,and a substantial increase in productivity and quality of rice grain will be required to feed a growing human population.Grain siz... Rice is one of the most important staple food for over half of the world＇s population,and a substantial increase in productivity and quality of rice grain will be required to feed a growing human population.Grain size and shape are the two important components contributing to grain yield and quality,because they impact both yield potential and end-use quality. 展开更多
关键词 The rational design of multiple molecular module-based assemblies for simultaneously improving rice yield and grain quality RIL length NIP
暂未订购 下载PDF
Mineralization characteristics of pellets prepared by ultrafine magnetite concentrate:influence on metallurgical property and improving method 认领 引用 被引量：2
11
作者 Xiao-hui Fan Zhi-an Zhou +4 位作者 Shu Wang Min Gan Zhi-yun Ji Xu-ling Chen Zhi-yuan Tian 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2023年第3期446-455,共10页
The reducing property of pellets prepared by ultrafine magnetite concentrate(UMC)and improving method were revealed.The results show that the reduction degree of UMC pellets is only about 56%compared with that of pell... The reducing property of pellets prepared by ultrafine magnetite concentrate(UMC)and improving method were revealed.The results show that the reduction degree of UMC pellets is only about 56%compared with that of pellets prepared from ordinary iron ore concentrate with relatively coarse particle size,which is significantly lower than the general reduction degree of about 70%.When the composite binder composed of bentonite and organic binder was added,the reduction degree was significantly increased to 69.66%.The revealed mechanism shows that the reduced pellets with common bentonite have a concentric structure,the oxidation gap between the inner and outer layers is obvious,and the outer dense oxide layer hinders the oxidation and reduction of the inner layer.After adding the composite binder,the organic components significantly improved the internal porosity of the pellets and the aggregation degree of ultrafine iron ore concentrate particles in the granulation process,forming a porous structure.The non-uniform double-layer structure is eliminated,and the increased pores are conducive to the internal diffusion of CO,and finally the reduction degree of pellets is increased to the level equivalent to that of ordinary magnetite pellets. 展开更多
关键词 Ultrafine magnetite concentrate Mineralization characteristics Reduction degree Improving method Function mechanism
暂未订购 下载PDF
Improving Lives,Strengthening Ties China-Indonesia cooperation on poverty alleviation,rural development,and education promises a path to better living for their people 认领 引用
12
作者 Yin Kaijun Zhai Kun 《China Report ASEAN》 2025年第4期30-31,共2页
China-Indonesia cooperation has been growing steadily in recent years.While the two countries’collaboration in emerging fields such as energy,the digital economy,and new technologies is on the rise,cooperation in liv... China-Indonesia cooperation has been growing steadily in recent years.While the two countries’collaboration in emerging fields such as energy,the digital economy,and new technologies is on the rise,cooperation in livelihood,driven by shared governance philosophies,holds potential as the next key growth area for bilateral relations. 展开更多
关键词 new technologies shared governance philosophies livelihood improvement rural development China Indonesia cooperation
暂未订购 下载PDF
Smart Rewiring:Improving Network Robustness Faster 认领 引用 被引量：3
13
作者 白亮 肖延东 +1 位作者 侯绿林 老松杨 《Chinese Physics Letters》 SCIE EI CAS CSCD 2015年第7期218-222,共5页
Previous work puts forward a random edge rewiring method which is capable of improving the network robustness noticeably, while it lacks further discussions about how to improve the robustness faster. In this study, t... Previous work puts forward a random edge rewiring method which is capable of improving the network robustness noticeably, while it lacks further discussions about how to improve the robustness faster. In this study, the detailed analysis of the structures of improved networks show that regenerating the edges between high-degree nodes can enhance the robustness against a targeted attack. Therefore, we propose a novel rewiring strategy based on regenerating more edges between high-degree nodes, called smart rewiring, which could speed up the increase of the robustness index effectively. The smart rewiring method also explains why positive degree-degree correlation could enhance network robustness. 展开更多
关键词 net Smart Rewiring:Improving Network Robustness Faster
暂未订购 下载PDF
Improving Accuracy of Estimating Two-Qubit States with Hedged Maximum Likelihood 认领 引用 被引量：2
14
作者 殷琪 项国勇 +1 位作者 李传锋 郭光灿 《Chinese Physics Letters》 SCIE EI CAS CSCD 2017年第3期1-5,共5页
As a widely used reconstruction algorithm in quantum state tomography, maximum likelihood estimation tends to assign a rank-deficient matrix, which decreases estimation accuracy for certain quantum states. Fortunately... As a widely used reconstruction algorithm in quantum state tomography, maximum likelihood estimation tends to assign a rank-deficient matrix, which decreases estimation accuracy for certain quantum states. Fortunately, hedged maximum likelihood estimation （HMLE） [Phys. Rev. Lett. 105 （2010）200504] was proposed to avoid this problem. Here we study more details about this proposal in the two-qubit case and further improve its performance. We ameliorate the HMLE method by updating the hedging function based on the purity of the estimated state. Both performances of HMLE and ameliorated HMLE are demonstrated by numerical simulation and experimental implementation on the Werner states of polarization-entangled photons. 展开更多
关键词 MLE Improving Accuracy of Estimating Two-Qubit States with Hedged Maximum Likelihood
暂未订购 下载PDF
Preface to the Special Issue:Towards Improving Understanding and Prediction of Arctic Change and its Linkage with Eurasian Mid-latitude Weather and Climate 认领 引用 被引量：5
15
作者 Xiangdong ZHANG Thomas JUNG +3 位作者 Muyin WANG Yong LUO Tido SEMMLER Andrew ORR 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2018年第1期1-4,共4页
The dramatic changes in the Arctic climate system during recent decades are one of the most prominent features of global climate change.Two most striking and fundamental characteristics are the amplified near-surface ... The dramatic changes in the Arctic climate system during recent decades are one of the most prominent features of global climate change.Two most striking and fundamental characteristics are the amplified near-surface warming at a rate twice the global average since the mid 20th century(e.g.,Blunden and Arndt,2012;Huang et al.,2017),and the rapid 展开更多
关键词 Preface to the Special Issue:Towards Improving Understanding and Prediction of Arctic Change and Its Linkage with Eurasian Mid-latitude Weather and Climate
暂未订购 下载PDF
Distance-Coefficient-Based Imaging Accuracy Improving Method Based on the Lamb Wave 认领 引用 被引量：3
16
作者 Shao-Jie Chen Shao-Ping Zhou +2 位作者 Yong Li Yan-Xun Xiang Min-Xin Qi 《Chinese Physics Letters》 SCIE EI CAS CSCD 2017年第4期55-59,共5页
An imaging accuracy improving method is established, within which a distance coefficient including location information between sparse array configuration and the location of defect is proposed to select higher signal... An imaging accuracy improving method is established, within which a distance coefficient including location information between sparse array configuration and the location of defect is proposed to select higher signal- to-noise ratio data from all experimental data and then to use these selected data for elliptical imaging. Tile relationships among imaging accuracy, distance coefficient and residual direct wave are investigated, and then the residual direct wave is introduced to make the engineering application more convenient. The effectiveness of the proposed method is evaluated experimentally by sparse transducer array of a rectangle, and the results reveal that selecting experimental data of smaller distance coefficient can effectively improve imaging accuracy. Moreover, the direct wave difference increases with the decrease of the distance coefficient, which implies that the imaging accuracy can be effectively improved by using the experimental data of the larger direct wave difference. 展开更多
关键词 Distance-Coefficient-Based Imaging Accuracy Improving Method Based on the Lamb Wave
暂未订购 下载PDF
Approaches to Improving Selectivity During Photoelectrochemical Transformation of Small Molecules 认领 引用 被引量：1
17
作者 Sipeng Yang Jie Yang +3 位作者 Mengyu Duan Shirong Kang Shaohua He Chuncheng Chen 《Transactions of Tianjin University》 EI CAS 2024年第2期167-177,共11页
Photoelectrochemical (PEC) small-molecule oxidation can selectively transform substrates into high-value-added fine chemicals and increase the rate of cathode hydrogen evolution. Nevertheless, achieving high-selectivi... Photoelectrochemical (PEC) small-molecule oxidation can selectively transform substrates into high-value-added fine chemicals and increase the rate of cathode hydrogen evolution. Nevertheless, achieving high-selectivity PEC oxidation of small molecules to produce specific products is a very challenging task. In general, selectivity can be improved by changing the surface catalyticsites of the photoanode and modulating the interfacial environments of the reactions. Herein, recent advances in approaches to improving selective PEC oxidation of small molecules are introduced. We first briefly discuss the basic concept and fundamentals of small-molecule PEC oxidation. The reported approaches to improving the performance of selective PEC oxidation of small molecules are highlighted from two aspects: (1) changing the surface properties of photoanodes by selecting suitable materials or modifying the photoanodes and (2) mediating the oxidation reactions using redox mediators. The PEC oxidation mechanism of these studies is emphasized. We also discuss the challenges in this research direction and offer a perspective on the further development of selective PEC-based small-molecule transformation. 展开更多
关键词 Photoelectrocatalytic Small-molecule oxidation Improving selectivity Surface properties Mediating
暂未订购 下载PDF
Shaping Taste: The Molecular Discovery of Rice Genes Improving Grain Size, Shape and Quality 认领 引用 被引量：13
18
作者 Nicholas P.Harberd 《Journal of Genetics and Genomics》 SCIE CAS CSCD 2015年第11期597-599,共3页
Modern-day human life is absolutely dependent upon the food that we derive from our crop plants. We eat grains, fruits, roots, tubers and other structures, all of which are constructed via coordinated organ growth. Wh... Modern-day human life is absolutely dependent upon the food that we derive from our crop plants. We eat grains, fruits, roots, tubers and other structures, all of which are constructed via coordinated organ growth. Whilst plant organ identity is first established in apical meristems （vegetative and floral shoot meristems and root meristems）, and in other meristematic regions, the final size and shape of organs are defined by subsequent coordination of organ expansion in longitudinal and transverse axes. 展开更多
关键词 QTLs Shaping Taste The Molecular Discovery of Rice Genes Improving Grain Size Shape and Quality gene
暂未订购 下载PDF
An Investigation of the Effect of Visceral Acupressure Technique Combined with Physical Training on Improving Physical Anxiety in Adolescents 认领 引用
19
作者 Jie Zheng 《Journal of Clinical and Nursing Research》 2025年第4期74-79,共6页
Purpose:To investigate the clinical effects of improving adolescents’form anxiety after the intervention of visceral massage technique and form training.Methods:A total of 80 adolescent patients with scoliosis abnorm... Purpose:To investigate the clinical effects of improving adolescents’form anxiety after the intervention of visceral massage technique and form training.Methods:A total of 80 adolescent patients with scoliosis abnormalities were selected for this experiment,and they were intervened with form and body training and form and body training+visceral body acupressure techniques,and the anxiety and depression scores,spinal Cobb angle,vertebral body rotation of the parietal vertebrae,and the treatment efficiency were compared between the groups after the clinical interventions.Results:The anxiety and depression scores of patients in the form group were significantly higher than those of the combined group,P<0.05;the improvement of the Cobb angle and vertebral rotation of the parietal vertebrae of patients in the combined group was better than that of the form group,P<0.05;and the total effective rate of the treatment of patients in the form group was significantly lower than that of the combined group,P<0.05.Conclusion:After intervening in adolescents’abnormalities of form,patients were treated with a combination of the internal organs and body acupressure techniques and form training methods,and the results were compared between groups.After the joint intervention of the visceral massage technique and physical training,the patients’scoliosis and other physical problems were positively improved,and the psychological status of the patients was relatively adjusted to ensure their physical and mental health. 展开更多
关键词 Visceral acupressure techniques Combined Form training Improvement Adolescents Form anxiety
暂未订购 下载PDF
Improving Densification and Mechanical Properties of FeAl/TiC Composites by Addition of Ni 认领 引用 被引量：4
20
作者 Yong LIU, Fengxiao LIU, Baiyun HUANG, Kechao ZHOU, Yuehui HE and Zhihong TANGNational Key Lab for P/M, Central South University, Changsha 410083, China 《Journal of Materials Science & Technology》 SCIE EI CAS 2003年第1期73-76,共4页
FeAl/TiC composites were fabricated by hot pressing blended elemental powders. The effects of Ni-doping on thedensification and mechanical properties of the composites were studied. Results show that the density of th... FeAl/TiC composites were fabricated by hot pressing blended elemental powders. The effects of Ni-doping on thedensification and mechanical properties of the composites were studied. Results show that the density of the composites decreases with the content of TiC increasing, and the addition of Ni significantly improves the densificationprocess by enhancing mass transfer in the bonding phase. The mechanical properties of the composites are closelyrelated with their porosity. Besides increasing the density of the composites, the addition of Ni improves the mechanical properties by other three effects: solution-strengthening the bonding phase, strengthening the FeAI-TiC interfaceand increasing ductile fracture in FeAl phase. 展开更多
关键词 of in it on TiC Improving Densification and Mechanical Properties of FeAl/TiC Composites by Addition of Ni by
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 2 … 181 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈