期刊文献+
共找到54,540篇文章
< 1 2 250 >
每页显示 20 50 100
Fluorescent Detection of Succinylcholine via an Amide Naphthotube-Based Indicator Displacement Assay
1
作者 Yin Ye Wang Hui +4 位作者 Wu Jianfang Wang Lili Yang Liupan Zhao Chengda Yao Huan 《有机化学》 北大核心 2025年第8期2953-2959,共7页
Succinylcholine(SC)is a widely used depolarizing muscle relaxant,but improper use can lead to arrhythmias and,in severe cases,pose a life-threatening risk.Additionally,some criminals exploit SC for illicit activities.... Succinylcholine(SC)is a widely used depolarizing muscle relaxant,but improper use can lead to arrhythmias and,in severe cases,pose a life-threatening risk.Additionally,some criminals exploit SC for illicit activities.Therefore,rapid SC detection is paramount for clinical practice and public safety.Currently,however,limited methods are available for the rapid detection of SC.A fluorescent indicator displacement assay sensor based on molecular recognition of an amide naphthotube was developed.This sensor enabled the rapid fluorescent detection of SC through competitive binding between SC and methylene blue with the amide naphthotube.The sensor exhibited exceptional sensitivity with a detection limit as low as 1.1μmol/L and a detection range of 1.1~60μmol/L,coupled with outstanding selectivity and robust stability.Furthermore,this sensor accurately determined SC levels in biological samples such as serum.In summary,this research provides a new solution for the rapid and accurate sensing of SC in complex matrices and offers new insights for the swift identification and detection of toxins. 展开更多
关键词 SUCCINYLCHOLINE molecular recognition indicator displacement assay fluorescent sensor
原文传递
Energy Efficiency Operating Indicator Forecasting and Speed Design Optimization for Polar Ice Class Merchant Vessels
2
作者 LU Yu LI Chen−ran +3 位作者 ZHU Xiang−hang LI Shi−an GU Zhu−hao LIU She−wen 《船舶力学》 北大核心 2025年第6期901-911,共11页
In order to accurately forecast the main engine fuel consumption and reduce the Energy Efficiency Operational Indicator(EEOI)of merchant ships in polar ice areas,the energy transfer relationship between ship-machine-p... In order to accurately forecast the main engine fuel consumption and reduce the Energy Efficiency Operational Indicator(EEOI)of merchant ships in polar ice areas,the energy transfer relationship between ship-machine-propeller is studied by analyzing the complex force situation during ship navigation and building a MATLAB/Simulink simulation platform based on multi-environmental resistance,propeller efficiency,main engine power,fuel consumption,fuel consumption rate and EEOI calculation module.Considering the environmental factors of wind,wave and ice,the route is divided into sections,the calculation of main engine power,main engine fuel consumption and EEOI for each section is completed,and the speed design is optimized based on the simulation model for each section.Under the requirements of the voyage plan,the optimization results show that the energy efficiency operation index of the whole route is reduced by 3.114%and the fuel consumption is reduced by 9.17 t. 展开更多
关键词 Energy Efficiency Operational indicator ice-class ships segment division design optimization
在线阅读 下载PDF
Core drug use indicators in Nigerian health facilities:a systematic review(1994-2024)
3
作者 Mustapha Muhammed Abubakar Abdurrahman Murtala Bello +5 位作者 Henry Chiagoziem Iremek Abdulmuminu Isah Chukwuemeka Nwachuya Suleman Hayatu Sule Ifeanyi Kanayo Ifeorah Blessing Onyinye Ukoha-Kalu 《Global Health Journal》 2025年第3期210-219,共10页
Objectives:We systematically reviewed the rational use of medicines using the World Health Organization/International Network of Rational Use of Drugs(WHO/INRUD)core drug use indicators.We also assessed the impact of ... Objectives:We systematically reviewed the rational use of medicines using the World Health Organization/International Network of Rational Use of Drugs(WHO/INRUD)core drug use indicators.We also assessed the impact of the coronavirus disease 2019 pandemic and the National Drug Policy(NDP)2005 on the rational use of medicines.Methods:Searches were conducted in PubMed,Scopus,and Google Scholar databases to identify studies that met our eligibility criteria.Assessment of the quality of studies was conducted using the Joanna Briggs Institute criteria for analytical studies.We reported and compared the median values of WHO/INRUD core drug use indicators with standard thresholds.Data were presented with median,interquartile range(IQR),and percentages.MannWhitney and Kruskal-Wallis tests were conducted to assess for statistical significance(P<0.05)across variables.Results:Thirty-one studies were included in the review,comprising 50,931 patient encounters across 268 health facilities.Within prescribing indicators,average number of medicines per patient encountered[3.4(IQR:3.0to 4.0)],percentage of medicines prescribed by generic[50.4%(IQR:47.4%to 65.0%)],percentage of encounters with antibiotic prescribed[40.2%(IQR:30.5%to 52.7%)],percentage of encounters with injection prescribed[18%(IQR:3.2%to 30.0%)]and the percentage of medicines prescribed from essential medicines list[82.0%(IQR:66.4%to 89.3%)].The median percentage of encounters with antibiotics(P=0.04)and the median percentage of medicines prescribed by generics(P=0.03)increased during and after the COVID-19 pandemic.Prescribing indicators were worse in primary and secondary health facilities,with significant differences in the median percentage of encounters with antibiotics(P=0.007)and injections(P=0.0002)across primary,secondary,and tertiary health facilities.There were improvements across all prescribing indicators after the implementation of NDP 2005.Conclusions:Core drug use indicators in Nigerian health facilities deviated from the WHO/INRUD thresholds,with noticeable improvement after the implementation of NDP 2005.More efforts are needed to improve rational drug use in Nigerian hospitals. 展开更多
关键词 Core drug use indicators Prescribing indicators Patient care indicators Facility indicators PHARMACOEPIDEMIOLOGY Systematic reviews
暂未订购
Surveillance of Antibiotic Use and Adherence to the WHO/INRUD Core Prescribing Indicators at a Primary Healthcare Hospital in Southern Zambia: Opportunities for Antimicrobial Stewardship Programs
4
作者 Steward Mudenda Ronald Simbaya +12 位作者 Given Moonga Florence Mwaba Mildred Zulu Rabecca Tembo Harriet K. Chiyangi Pipina Vlahakis Shafiq Mohamed Adriano Focus Lubanga Manal Hadi Ghaffoori Kanaan Maisa Kasanga Ngoni Veddie Muzondo Nathan Mugenyi Webrod Mufwambi 《Pharmacology & Pharmacy》 2025年第1期1-19,共19页
Background: The irrational use of medicines remains a key health problem in many developing countries. The overuse of antibiotics is a key driver of antimicrobial resistance (AMR). This study surveyed antibiotic use a... Background: The irrational use of medicines remains a key health problem in many developing countries. The overuse of antibiotics is a key driver of antimicrobial resistance (AMR). This study surveyed antibiotic use and adherence to the World Health Organization (WHO) prescribing indicators at the Request Muntanga Hospital in the Kalomo District of Southern Province, Zambia. Materials and Methods: This cross-sectional study was conducted from July 2023 to September 2023 at Request Muntanga Hospital in Zambia and reviewed 600 medical record prescriptions which were issued from July 1, 2022 to June 30, 2023 using the WHO prescribing indicators. The collected data were analyzed using Statistical Package for Social Sciences version 23.0. Results: From the 600 prescriptions sampled, 1246 medicines were prescribed, with antibiotics making up 86.7% of the encounters. Additionally, the average number of drugs prescribed per encounter was 2.1 and the prevalence of polypharmacy was 61.3%. Further, 17.8% of medicines were prescribed as injectables. Furthermore, 76.7% of the drugs were prescribed from the Zambia Essential Medicines List and 38.9% by generic names. Conclusions: This study found a high use of antibiotics and deviations from the WHO/International Network of Rational Use of Drugs (INRUD) core prescribing indicators at the Request Muntanga Hospital indicating non-adherence to the prescribing indicators. There is a need to promote adherence to the WHO/INRUD core prescribing indicators to promote the rational use of antibiotics and prevent the emergence and spread of AMR. 展开更多
关键词 WHO Prescribing indicators Antimicrobial Resistance Antibiotic Use POLYPHARMACY SURVEILLANCE Zambia
在线阅读 下载PDF
Nutritional and inflammatory indicators differ among patients with colorectal cancer with distinct microsatellite stability statuses
5
作者 Hao Zuo Zheng Yuan +4 位作者 Meng-Hui Gu Wei Xu Jia-Hui Zhou Yan Zhang Xin-Hua Gu 《World Journal of Gastrointestinal Surgery》 2025年第5期95-102,共8页
BACKGROUND Nutritional and inflammatory indicators are crucial in assessing the nutritional health and immune function of patients with cancer,which are factors closely associated with the diagnosis and treatment of c... BACKGROUND Nutritional and inflammatory indicators are crucial in assessing the nutritional health and immune function of patients with cancer,which are factors closely associated with the diagnosis and treatment of colorectal cancer(CRC).AIM To explore the relationship between nutritional and inflammatory indicators and microsatellite stability(MSS)status in CRC.METHODS The clinical data of 56 patients who underwent surgical treatment for CRC were collected.Furthermore,the expressions of nutritional(levels of serum albumin,triglycerides,serum cholesterol,and body mass index)and inflammatory response indicators(absolute neutrophil count,absolute lymphocyte count,absolute monocyte count,neutrophil-to-lymphocyte ratio,and lymphocyte-to-monocyte ratio)as well as their correlation with microsatellite instability(MSI)status were investigated in patients with CRC.RESULTS Compared to the patients with MSS tumors,those with MSI tumors demonstrated significantly lower levels of two nutritional indicators,namely serum albumin and body mass index(P<0.05).Moreover,patients in the MSI group demonstrated significantly lower absolute lymphocyte counts and higher neutrophil-to-lymphocyte ratio than those in the MSS group(P<0.05),indicating pronounced differences in inflammatory responses and immune states between the two groups.CONCLUSION Certain nutritional and inflammatory indicators exhibit significant differences among patients with MSI and MSS CRC,highlighting their potential role in the clinical treatment and health management of this specific population. 展开更多
关键词 Colorectal cancer Microsatellite instability Nutritional indicators Tumor markers Inflammatory indices Diagnosis
暂未订购
Status quo of hypercoagulation as a prognostic indicator following neoadjuvant immunochemotherapy in locally advanced gastric cancer
6
作者 Grigorios Christodoulidis Dimitra Bartzi +2 位作者 Kyriaki Tsagkidou Konstantinos Eleftherios Koumarelas Dimitrios Zacharoulis 《World Journal of Gastrointestinal Oncology》 2025年第9期54-62,共9页
Gastric cancer remains a major cause of cancer-related mortality worldwide,with immunotherapy emerging as a promising treatment strategy.Neoadjuvant im-mune checkpoint therapy has shown potential in enhancing antitumo... Gastric cancer remains a major cause of cancer-related mortality worldwide,with immunotherapy emerging as a promising treatment strategy.Neoadjuvant im-mune checkpoint therapy has shown potential in enhancing antitumor responses and improving surgical outcomes.However,its effects on systemic coagulation and thrombotic risk remain poorly understood.This study aims to investigate the relationship between neoadjuvant immune checkpoint therapy and coagulation dynamics in patients with gastric cancer,exploring potential mechanisms that may contribute to a hypercoagulable state.By assessing coagulation markers,thrombotic events,and inflammatory responses,this research seeks to provide insights into the interplay between immune modulation and hemostatic alte-rations.A better understanding of these interactions may help optimize patient management and guide thromboprophylaxis strategies in this clinical setting. 展开更多
关键词 indicator HYPERCOAGULATION BIOMARKER Gastric cancer IMMUNOCHEMOTHERAPY
暂未订购
Artificial intelligence in colonoscopy: Enhancing quality indicators for optimal patient outcomes
7
作者 Konstantina Dimopoulou Marianna Spinou +3 位作者 Alexandros Ioannou Eleni Nakou Petros Zormpas George Tribonias 《World Journal of Gastroenterology》 2025年第40期54-72,共19页
Colonoscopy remains the cornerstone of colorectal cancer prevention and survei-llance,but the procedure’s effectiveness is entirely dependent upon various quali-ty indicators,such as detection rates,withdrawal time,a... Colonoscopy remains the cornerstone of colorectal cancer prevention and survei-llance,but the procedure’s effectiveness is entirely dependent upon various quali-ty indicators,such as detection rates,withdrawal time,adequate bowel prepara-tion,cecal intubation rate and patient outcomes.Despite progress in endoscopic techniques,challenges persist in maintaining endoscopists’consistent perfor-mance and improving quality metrics.Artificial intelligence(AI)has emerged as a“game changer”in the gastroenterology field,offering the opportunity to signifi-cantly increase colonoscopy quality.This review highlights the role of AI-driven technologies such as deep learning,computer vision,and real-time feedback me-chanisms in optimizing key quality indicators of colonoscopy.The implementa-tion of AI in colonoscopy may reduce human error,improve endoscopist’s consis-tency in real-time decision making,ensuring higher reliability and standardiza-tion during the procedure.Furthermore,AI has the potential to reshape how en-doscopists perform and evaluate procedures,while improved lesion characte-rization may enable more precise selection for resection,reducing morbidity and the incidence of interval cancers.The review also addresses challenges and limi-tations in AI integration,including cost-effectiveness and its impact on endosco-pist training.AI holds substantial promise for advancing colonoscopy quality and elevating overall patient care,paving the way for more effective and personalized medical approaches. 展开更多
关键词 Artificial intelligence COLONOSCOPY OUTCOME Quality indicators Detection rates
在线阅读 下载PDF
Analysis of the Diagnostic Value of Blood Test Indicators for Anemia
8
作者 Xueguo Yu 《Journal of Clinical and Nursing Research》 2025年第1期69-74,共6页
Objective: To analyze the effectiveness of blood test indicators in the differential diagnosis of anemia. Methods: Sixty patients diagnosed with anemia (disease group) from June 2021 to June 2024 were selected. Based ... Objective: To analyze the effectiveness of blood test indicators in the differential diagnosis of anemia. Methods: Sixty patients diagnosed with anemia (disease group) from June 2021 to June 2024 were selected. Based on the type of disease, the group was subdivided into iron deficiency anemia (IDA) with 31 cases, hemolytic anemia (HA) with 11 cases, and aplastic anemia (AA) with 18 cases. Based on the severity of the disease, the group was divided into mild anemia (30 cases), moderate anemia (19 cases), and severe anemia (11 cases). Sixty healthy individuals (control group) were also included, and all underwent blood tests. Comparisons were made between the red blood cell (RBC) indicators of the disease group and the control group, the blood test indicators of different types of anemia, and the serum iron levels of varying severity of anemia. Results: Except for red cell distribution width (RDW), the RBC indicators in the disease group were lower than those in the control group (P < 0.05). Comparisons of RBC indicators among different types of anemia showed significant differences (P < 0.05). Serum iron levels varied significantly among different degrees of anemia severity (P < 0.05). Conclusion: Blood tests can detect anemia, distinguish types of anemia, and assess anemia severity, offering high diagnostic value. 展开更多
关键词 Blood test indicators ANEMIA Differential diagnosis
暂未订购
Optimizing Forecast Accuracy in Cryptocurrency Markets:Evaluating Feature Selection Techniques for Technical Indicators
9
作者 Ahmed El Youssefi Abdelaaziz Hessane +1 位作者 Imad Zeroual Yousef Farhaoui 《Computers, Materials & Continua》 2025年第5期3411-3433,共23页
This study provides a systematic investigation into the influence of feature selection methods on cryptocurrency price forecasting models employing technical indicators.In this work,over 130 technical indicators—cove... This study provides a systematic investigation into the influence of feature selection methods on cryptocurrency price forecasting models employing technical indicators.In this work,over 130 technical indicators—covering momentum,volatility,volume,and trend-related technical indicators—are subjected to three distinct feature selection approaches.Specifically,mutual information(MI),recursive feature elimination(RFE),and random forest importance(RFI).By extracting an optimal set of 20 predictors,the proposed framework aims to mitigate redundancy and overfitting while enhancing interpretability.These feature subsets are integrated into support vector regression(SVR),Huber regressors,and k-nearest neighbors(KNN)models to forecast the prices of three leading cryptocurrencies—Bitcoin(BTC/USDT),Ethereum(ETH/USDT),and Binance Coin(BNB/USDT)—across horizons ranging from 1 to 20 days.Model evaluation employs the coefficient of determination(R2)and the root mean squared logarithmic error(RMSLE),alongside a walk-forward validation scheme to approximate real-world trading contexts.Empirical results indicate that incorporating momentum and volatility measures substantially improves predictive accuracy,with particularly pronounced effects observed at longer forecast windows.Moreover,indicators related to volume and trend provide incremental benefits in select market conditions.Notably,an 80%–85% reduction in the original feature set frequently maintains or enhances model performance relative to the complete indicator set.These findings highlight the critical role of targeted feature selection in addressing high-dimensional financial data challenges while preserving model robustness.This research advances the field of cryptocurrency forecasting by offering a rigorous comparison of feature selection methods and their effects on multiple digital assets and prediction horizons.The outcomes highlight the importance of dimension-reduction strategies in developing more efficient and resilient forecasting algorithms.Future efforts should incorporate high-frequency data and explore alternative selection techniques to further refine predictive accuracy in this highly volatile domain. 展开更多
关键词 Cryptocurrency forecasting technical indicator feature selection walk-forward VOLATILITY MOMENTUM TREND
在线阅读 下载PDF
Impact of Laboratory Analytical Indicators on Positive Blood Culture Detection Rates: A Single Center Study
10
作者 Di Wang Lingli Liu +5 位作者 Ruirui Ma Lijun Du Guixue Cheng Yali Liu Qiaolian Yi Yingchun Xu 《Biomedical and Environmental Sciences》 2025年第3期303-312,共10页
Objective Blood culture remains the gold standard for diagnosing bloodstream infections.Clinical laboratories must ensure the quality of blood culture processes from receipt to obtaining definitive results.We examined... Objective Blood culture remains the gold standard for diagnosing bloodstream infections.Clinical laboratories must ensure the quality of blood culture processes from receipt to obtaining definitive results.We examined laboratory analytical indicators associated with positive blood culture results.Methods Blood cultures collected from Peking Union Medical College Hospital between January 1,2020,and December 31,2022,were retrospectively analyzed.The mode of transportation(piping logistics delivery vs.staff),source of blood cultures(outpatient/emergency department vs.inpatient department),rotation of personnel,and time of reception(8:00–19:59 vs.20:00–07:59)were compared between blood culture-positive and-negative results.Results Between 2020 and 2022,the total positive rate of blood culture was 8.07%.The positive rate of blood cultures in the outpatient/emergency department was significantly higher than that in the inpatient department(12.46%vs.5.83%;P<0.0001).The time-to-detection of blood cultures was significantly affected by the delivery mode and personnel rotation.The blood culture positive rate of the total pre-analytical time within 1 h was significantly higher than that within 1–2 h or>2 h(P<0.0170).Conclusion Laboratory analytical indicators such as patient source,transportation mode,and personnel rotation significantly impacted the positive detection rate or time of blood culture. 展开更多
关键词 Blood culture Laboratory analytical indicators Total pre-analytical time Time-to-detection PATHOGENS
暂未订购
Triglyceride-glucose index as a prognostic indicator in advanced gastric cancer:Insights and future research
11
作者 Cheng-Fei Zhao Xiao-Ling Liu +1 位作者 Ning-Bi Wu Zhi-Feng Xu 《World Journal of Gastroenterology》 2025年第17期1-7,共7页
Gastric cancer(GC),the fifth most common malignancy worldwide,poses a substantial challenge in clinical oncology,particularly in its advanced stages.Despite advancements in immunotherapy,patient prognosis remains poor... Gastric cancer(GC),the fifth most common malignancy worldwide,poses a substantial challenge in clinical oncology,particularly in its advanced stages.Despite advancements in immunotherapy,patient prognosis remains poor,underscoring the need for reliable prognostic tools to refine treatment strategies.A study by Yao et al explores the role of the triglyceride-glucose(TyG)index as a prognostic marker for advanced GC patients receiving immunotherapy combined with chemotherapy.The results of the study demonstrate that the TyG index correlates with improved survival outcomes,including better progression-free survival and overall survival.This editorial critically evaluates the significance of these findings,discusses their implications for future research,and highlights innovative directions that could drive further breakthroughs in the application of the TyG index to cancer therapy.This editorial also highlights the potential of TyG in advancing precision oncology and advocates for global validation and mechanistic investigations to further solidify its clinical utility.Future research should focus on validating the TyG index across various malignancies,exploring its potential to influence immunotherapy through metabolic interventions,and developing multi-biomarker models that integrate TyG with immune and genomic profiles. 展开更多
关键词 Advanced gastric cancer Triglyceride-glucose index Prognostic indicator IMMUNOTHERAPY Insulin resistance
暂未订购
Research on Risk Indicators of Project Procurement in Higher Education Institutions
12
作者 Lele Chan Changyuan Wang 《Journal of Contemporary Educational Research》 2025年第5期96-101,共6页
This paper focuses on the procurement of construction projects in universities,conducting research on the influencing factors of procurement risks in such projects.By combining questionnaire surveys with expert interv... This paper focuses on the procurement of construction projects in universities,conducting research on the influencing factors of procurement risks in such projects.By combining questionnaire surveys with expert interviews,numerous factors affecting procurement are analyzed.Subsequently,these factors are refined and summarized to construct a procurement risk evaluation index system for construction projects,which includes three first-level indicators,such as process management risk and ethical/legal risk,and is further subdivided into 13 second-level indicators. 展开更多
关键词 Risk evaluation indicators Project procurement University construction projects Procurement management
在线阅读 下载PDF
Systemic immune indicators: Early predictors of renal damage in children with newly diagnosed type 1 diabetes mellitus
13
作者 Basavraj S Nagoba Ajay M Gavkare +2 位作者 Neeta Nanaware Sachin S Mumbre Sachin Bhavthankar 《World Journal of Diabetes》 2025年第7期8-15,共8页
This editorial delves into the potential of systemic immune indicators(SIIs)as early predictors of renal damage in children with newly diagnosed type 1 diabetes mellitus.By exploring the recent study published by Cao ... This editorial delves into the potential of systemic immune indicators(SIIs)as early predictors of renal damage in children with newly diagnosed type 1 diabetes mellitus.By exploring the recent study published by Cao et al,this article aims to highlight the importance of early detection and intervention.This study compre-hensively analyzes various SIIs,examining their correlation with renal compli-cations in newly diagnosed type 1 diabetic children.The findings reveal a sig-nificant association between immune system dysregulation and the onset of renal damage,suggesting that certain immune indicators can be early markers for predicting renal complications.This editorial emphasizes the clinical implications and applications of utilizing SIIs for early detection in pediatric diabetes care.It underscores the importance of innovative diagnostic approaches and illustrates real-world applications and outcomes.Additionally,it addresses the challenges and considerations in adopting these indicators and outlines future research directions to enhance diabetes management in children. 展开更多
关键词 Systemic immune indicators Type 1 diabetes Renal damage Pediatric care Early predictors
暂未订购
Study on the optimal test parameters for vibration compaction based on the control of physical-mechanical indicators
14
作者 Zhongrui Chen Yanxi Xiong +3 位作者 Ronghui Yan Zhibo Cheng Taifeng Li Hongfu Tan 《Railway Sciences》 2025年第3期388-409,共22页
Purpose-The indoor vibration compaction test(IVCT)was a key step in controlling the compaction quality for high-speed railway graded aggregate(HRGA),which currently had a research gap on the assessment indicators and ... Purpose-The indoor vibration compaction test(IVCT)was a key step in controlling the compaction quality for high-speed railway graded aggregate(HRGA),which currently had a research gap on the assessment indicators and compaction parameters.Design/methodology/approach-To address these issues,a novel multi-indicator IVCT method was proposed,including physical indicator dry density(ρd)and mechanical indicators dynamic stiffness(Krb)and bearing capacity coefficient(K20).Then,a series of IVCTs on HRGA under different compaction parameters were conducted with an improved vibration compactor,which could monitor the physical-mechanical indicators in real-time.Finally,the optimal vibration compaction parameters,including the moisture content(ω),the diameter-to-maximum particle size ratio(Rd),the thickness-to-maximum particle size ratio(Rh),the vibration frequency(f),the vibration mass(Mc)and the eccentric distance(re),were determined based on the evolution characteristics for the physical-mechanical indicators during compaction.Findings-All results indicated that theρd gradually increased and then stabilized,and the Krb initially increased and then decreased.Moreover,the inflection time of the Krb was present as the optimal compaction time(Tlp)during compaction.Additionally,optimal compaction was achieved whenωwas the water-holding content after mud pumping,Rd was 3.4,Rh was 3.5,f was the resonance frequency,and the ratio between the excitation force and the Mc was 1.8.Originality/value-The findings of this paper were significant for the quality control of HRGA compaction. 展开更多
关键词 High-speed railway subgrade Graded aggregates Vibratory compaction test Optimal vibration compaction parameters Physical-mechanical indicator
在线阅读 下载PDF
WHO eye care indicators and global initiatives
15
作者 Vera Carneiro Stuart Keel 《Eye Science》 2025年第2期99-102,共4页
BACKGROUND Globally,it’s estimated that at least 1 billion people have a near and/or distance vision impairment that could have been prevented or is yet to be addressed.The burden of unaddressed vision impairment and... BACKGROUND Globally,it’s estimated that at least 1 billion people have a near and/or distance vision impairment that could have been prevented or is yet to be addressed.The burden of unaddressed vision impairment and blindness is estimated to be four times higher in low and intermediate-resource settings than in high-income settings.[1] 展开更多
关键词 high income settings global initiatives eye care indicatorS low intermediate resource settings BLINDNESS vision impairment
暂未订购
Raw materials consumption reduction for practical electric arc furnace steelmaking: a data association rules mining approach with improved evaluation indicator
16
作者 Yu-chi Zou Ling-zhi Yang +5 位作者 Hang Hu Guan-nan Li Zeng Feng Shuai Wang Feng Chen Yu-feng Guo 《Journal of Iron and Steel Research International》 2025年第10期3308-3327,共20页
Reducing raw materials consumption(RMC)in electric arc furnace(EAF)steelmaking process is beneficial to the reduction in resource and energy consumption.The conventional indicator of evaluating RMC only focuses on EAF... Reducing raw materials consumption(RMC)in electric arc furnace(EAF)steelmaking process is beneficial to the reduction in resource and energy consumption.The conventional indicator of evaluating RMC only focuses on EAF inputs and outputs,neglecting the associations between smelting operations and RMC.Traditional methods of reducing RMC rely on manual experience and lack a standard operation guidance.A method based on association rules mining and metallurgical mechanism(ARM-MM)was proposed.ARM-MM proposed an improved evaluation indicator of RMC and the indicator independently showed the associations between smelting operations and RMC.On the basis,1265 heats of real EAF data were used to obtain the operation guidance for RMC reduction.According to the ratio of hot metal(HM)in charge metals,data were divided into all dataset,low HM ratio dataset,medium HM ratio dataset,and high HM ratio dataset.ARM algorithm was used in each dataset to obtain specific operation guidance.The real average RMC under all dataset,medium HM ratio dataset,and high HM ratio dataset was reduced by 279,486,and 252 kg/heat,respectively,when obtained operation guidance was applied. 展开更多
关键词 Electric arc furnace steelmaking Raw materials consumption Evaluation indicator Association rules mining Operation guidance
原文传递
Efficacy of Early Enteral Nutrition Therapy in ICU Patients with Respiratory Failure and its Impact on Blood Gas Analysis Indicators
17
作者 Xiaoyan Liu 《Journal of Clinical and Nursing Research》 2025年第9期333-339,共7页
Objective:To explore the effectiveness of early enteral nutrition therapy in ICU patients with respiratory failure.Methods:A total of 76 ICU patients with respiratory failure,admitted from May 2024 to May 2025,were in... Objective:To explore the effectiveness of early enteral nutrition therapy in ICU patients with respiratory failure.Methods:A total of 76 ICU patients with respiratory failure,admitted from May 2024 to May 2025,were included in the study.They were divided into an observation group and a control group using a random number table method,and relevant treatment indicators were compared.Results:The total effective rate in the observation group was higher than that in the control group(p<0.05).After treatment,the observation group showed superior lung function,organ function,health status,nutritional status,body mass index,and blood gas analysis indicators compared to the control group(p<0.05).Conclusion:Early enteral nutrition therapy is effective in treating ICU patients with respiratory failure and is beneficial for improving their lung function,nutritional status,and blood gas parameters,making it worthy of promotion. 展开更多
关键词 Early enteral nutrition ICU respiratory failure Blood gas indicators Lung function Publisher’s note Bio-Byword Scientific
暂未订购
Critical quality indicators of high-performance polyetherimide(ULTEM)over the MEX 3D printing key generic control parameters:Prospects for personalized equipment in the defense industry
18
作者 Nectarios Vidakis Markos Petousis +6 位作者 Constantine David Nektarios K.Nasikas Dimitrios Sagris Nikolaos Mountakis Mariza Spiridaki Amalia Moutsopoulou Emmanuel Stratakis 《Defence Technology(防务技术)》 2025年第1期150-167,共18页
Additive Manufacturing(AM)can provide customized parts that conventional techniques fail to deliver.One important parameter in AM is the quality of the parts,as a result of the material extrusion 3D printing(3D-P)proc... Additive Manufacturing(AM)can provide customized parts that conventional techniques fail to deliver.One important parameter in AM is the quality of the parts,as a result of the material extrusion 3D printing(3D-P)procedure.This can be very important in defense-related applications,where optimum performance needs to be guaranteed.The quality of the Polyetherimide 3D-P specimens was examined by considering six control parameters,namely,infill percentage,layer height,deposition angle,travel speed,nozzle,and bed temperature.The quality indicators were the root mean square(Rq)and average(Ra)roughness,porosity,and the actual to nominal dimensional deviation.The examination was performed with optical profilometry,optical microscopy,and micro-computed tomography scanning.The Taguchi design of experiments was applied,with twenty-five runs,five levels for each control parameter,on five replicas.Two additional confirmation runs were conducted,to ensure reliability.Prediction equations were constructed to express the quality indicators in terms of the control parameters.Three modeling approaches were applied to the experimental data,to compare their efficiency,i.e.,Linear Regression Model(LRM),Reduced Quadratic Regression Model,and Quadratic Regression Model(QRM).QRM was the most accurate one,still the differences were not high even considering the simpler LRM model. 展开更多
关键词 Polyetherimide(PEI) Material extrusion(MEX) Three-dimensional printing(3D-P) Critical quality indicators(CQIs) Quadratic regression model(QRM) Taguchi
在线阅读 下载PDF
Desertification Assessment Indicator System in China 被引量:7
19
作者 张克斌 杨晓晖 《Forestry Studies in China》 CAS 2002年第1期44-48,共5页
Based on the definition of desertification adopted by United Nations Convention to Combat Desertification in Those Countries Experiencing Serious Drought and/or Desertification,particularly in Africa, first,the pat... Based on the definition of desertification adopted by United Nations Convention to Combat Desertification in Those Countries Experiencing Serious Drought and/or Desertification,particularly in Africa, first,the patterns of desertification in China are introduced.Second,desertification assessment indicator system that used in China is presented.It includes:(1)climate classification;(2)classification of land use;(3)classification of desertification patterns which include wind erosion,water erosion,salinization,and grassland degradation;(4)grading index of desertification that includes grading index of desertification caused by wind erosion,desertification caused by water erosion,desertification caused by salinization,indicators of grassland degradation classification.At last,some detailed factors that can be used as indicators in desertification assessment are discussed. 展开更多
关键词 desertification assessment indicator system China
在线阅读 下载PDF
Effects of Feeding Corn Stalks on Economic Indicators of Tenebrio molitor 被引量:3
20
作者 吉志新 温晓蕾 +6 位作者 王长青 余金咏 宋金昌 王哲 齐慧霞 胡振妍 李汉臣 《Agricultural Science & Technology》 CAS 2011年第10期1513-1516,共4页
[Objective] The study aimed at reducing the economic cost in feeding Tenebrio molitor and improving the utilization ratio of corn stalks.[Method] The effects of different proportions of corn stalks on the weigh of Ten... [Objective] The study aimed at reducing the economic cost in feeding Tenebrio molitor and improving the utilization ratio of corn stalks.[Method] The effects of different proportions of corn stalks on the weigh of Tenebrio molitor and the contents of crude protein,crude fat,Ca,P,dry matter and crude ash in the half-dry matter of Tenebrio molitor had been studied in the laboratory.[Result] Compared with the recipes of all wheat bran and pure fine fodder,feeding Tenebrio molitor by applying 30%-60% of corn stalks could significantly improve the content of crude protein in the half-dry materials of Tenebrio molitor,but it was detrimental to the improvement in weight of Tenebrio molitor and the accumulation of crude fat.To be specific,the recipe V(50% of corn stalks + 50% of fine fodder) was beneficial to the accumulation of dry matter and crude ash.The recipe VII(70% of corn stalks + 30% of fine fodder) and the recipe VIII(70% of corn stalks treated with Guangda feed leaven + 30% of fine fodder) were beneficial to the accumulation of crude protein,Ca and P.There were differences among the influences of corn stalks in different treatments on the crude protein and other nutrition indicators of Tenebrio molitor.[Conclusion] Appropriately applying corn stalks can improve the accumulation of the crude protein,crude ash,dry matter,Ca and P of Tenebrio molitor but was detrimental to the growth and development of Tenebrio molitor and the accumulation of crude fat. 展开更多
关键词 Tenebrio molitor larvae Corn stalks Nutrition indicators
在线阅读 下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部