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Analysis of Renewable Energy Absorption and Economic Feasibility in Multi-Energy Complementary Systems under Spot Market Conditions 被引量:1
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作者 Xiuyun Wang Zipeng Zhang +1 位作者 Chuang Liu Guoliang Bian 《Energy Engineering》 2025年第2期577-619,共43页
As the power system transitions to a new green and low-carbon paradigm,the penetration of renewable energy in China’s power system is gradually increasing.However,the variability and uncertainty of renewable energy o... As the power system transitions to a new green and low-carbon paradigm,the penetration of renewable energy in China’s power system is gradually increasing.However,the variability and uncertainty of renewable energy output limit its profitability in the electricity market and hinder its market-based integration.This paper first constructs a wind-solar-thermalmulti-energy complementary system,analyzes its external game relationships,and develops a bi-level market optimization model.Then,it considers the contribution levels of internal participants to establish a comprehensive internal distribution evaluation index system.Finally,simulation studies using the IEEE 30-bus system demonstrate that the multi-energy complementary system stabilizes nodal outputs,enhances the profitability of market participants,and promotes the market-based integration of renewable energy. 展开更多
关键词 Multi-energy complementary systems spot market two-layer optimization new energy consumption
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The Study of Long-Term Trading Revenue Distribution Models in Wind-Photovoltaic-Thermal Complementary Systems Based on the Improved Shapley Value Method
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作者 Dongfeng Yang Ruirui Zhang +1 位作者 Chuang Liu Guoiang Bian 《Energy Engineering》 2025年第7期2673-2694,共22页
Under the current long-term electricity market mechanism,new energy and thermal power face issues such as deviation assessment and compression of generation space.The profitability of market players is limited.Simulta... Under the current long-term electricity market mechanism,new energy and thermal power face issues such as deviation assessment and compression of generation space.The profitability of market players is limited.Simultaneously,the cooperation model among various energy sources will have a direct impact on the alliance’s revenue and the equity of income distribution within the alliance.Therefore,integrating new energy with thermal power units into an integrated multi-energy complementary system to participate in the long-term electricity market holds significant potential.To simulate and evaluate the benefits and internal distribution methods of a multi-energy complementary system participating in long-term market transactions,this paper first constructs a multi-energy complementary system integrated with new energy and thermal power generation units at the same connection point,and participates in the annual bilateral game as a unified market entity to obtain the revenue value under the annual bilateral market.Secondly,based on the entropy weight method,improvements are made to the traditional Shapley value distribution model,and an internal distribution model for multi-energy complementary systems with multiple participants is constructed.Finally,a Markov Decision Process(MDP)evaluation system is constructed for practical case verification.The research results show that the improved Shapley value distribution model achieves higher satisfaction,providing a reasonable allocation scheme for multi-energy complementary cooperation models. 展开更多
关键词 Multi-energy complementary system cooperative game enhancements to the Shapley value MDP indicators
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Economic Analysis Study of Agricultural and Solar Complementary System
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作者 Aijun LIN Junwen TANG 《Asian Agricultural Research》 2024年第11期18-19,24,共3页
Agro-photovoltaic complementary system(APCS)is an innovative land use model combining agricultural production with photovoltaic power generation,aiming to realize dual land use and improve land use efficiency and econ... Agro-photovoltaic complementary system(APCS)is an innovative land use model combining agricultural production with photovoltaic power generation,aiming to realize dual land use and improve land use efficiency and economic benefits by installing photovoltaic panels on farmland.With the growth of global energy demand and the intensification of climate change,agro-photovoltaic(APV)systems have received widespread attention as a sustainable energy solution.Studies have shown that agro-photovoltaic systems exhibit significant economic benefits in different regions and crop types.Through reasonable system design and optimization,the agricultural and photovoltaic complementary system is not only technically feasible,but also has significant economic advantages,which provides a strong support for achieving the goal of sustainable development. 展开更多
关键词 Agricultural and photovoltaic complementary systems Economic analysis Land use efficiency COST-EFFECTIVENESS
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Complementary system-theoretic modelling approach for enhancing hydrological forecasting
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作者 Martins Y.Otache 李致家 《Journal of Southeast University(English Edition)》 EI CAS 2006年第2期273-280,共8页
Hydrologic models generally represent the most dominant processes since they are mere simplifications of physical reality and thus are subject to many significant uncertainties. As such, a coupling strategy is propose... Hydrologic models generally represent the most dominant processes since they are mere simplifications of physical reality and thus are subject to many significant uncertainties. As such, a coupling strategy is proposed. To this end, the coupling of the artificial neural network (ANN) with the Xin'anjiang conceptual model with a view to enhance the quality of its flow forecast is presented. The approach uses the latest observations and residuals in runoff/discharge forecasts from the Xin'anjiang model. The two complementary models (Xin'anjiang & ANN) are used in such a way that residuals of the Xin'anjiang model are forecasted by a neural network model so that flow forecasts can be improved as new observations come in. For the complementary neural network, the input data were presented in a patterned format to conform to the calibration regime of the Xin'anjiang conceptual model, using differing variants of the neural network scheme. The results show that there is a substantial improvement in the accuracy of the forecasts when the complementary model was operated on top of the Xin'anjiang conceptual model as compared with the results of the Xin'anjiang model alone. 展开更多
关键词 hydrological forecasting complementary model RESIDUAL Xin'anjiang conceptual model artificial neural network
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Prevalence and patterns of complementary and alternative medicine usage among adults with chronic kidney disease:A systematic review and meta-analysis
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作者 Jia Wen Chin Rafidah Abdullah +2 位作者 Benjamin Wei Wang Tan Koh Wei Wong Ban-Hock Khor 《Journal of Integrative Medicine》 2025年第4期370-381,共12页
Background:The use of complementary and alternative medicine(CAM)is common among individuals with underlying chronic illnesses.Objective:This systematic review and meta-analysis investigated the global prevalence and ... Background:The use of complementary and alternative medicine(CAM)is common among individuals with underlying chronic illnesses.Objective:This systematic review and meta-analysis investigated the global prevalence and patterns of CAM use among individuals with chronic kidney disease(CKD).Search strategy:PubMed,Embase,and Cumulative Index to Nursing and Allied Health Literature Plus were searched from inception until 26th February 2024.Inclusion criteria:Original articles reporting the use of at least one type of CAM among individuals aged above 18 years old and at all stages of CKD or undergoing any form of kidney replacement therapy.Data extraction and analysis:Two independent reviewers performed the literature screening.The data were extracted from the included studies by one reviewer and cross-checked by another.Discrepancies were resolved by discussion and consensus among two reviewers.Primary information included prevalence of CAM use,types of CAM used,reasons for CAM use,factors associated with CAM use,and disclosure to healthcare providers.Meta-analyses were performed to determine the pooled prevalence of CAM use and non-disclosure of CAM using a random effect model.Results:Forty-one studies were included in this systematic review and meta-analysis.The pooled prevalence of CAM use was 43%(95%confidence interval:34%,51%),I2=99.46%.The reasons for CAM use included treatment of underlying comorbidities,complications or symptoms,maintenance of general health,and treatment of CKD.Nutritional approaches were the most common CAM modality,with 412different herbal and dietary supplements reported;psychological and physical approaches included massage therapy,relaxation techniques,and mind–body practices;and other complementary health approaches such as homeopathy,traditional Chinese medicine,and Ayurvedic medicine were also frequently reported.Factors associated with CAM use included sociodemographic characteristics such as older age,female gender,or higher income;disease or therapy factors such as not having diabetes,relying on hemodialysis,or poor adherence to medication;and patient or internal factors such as positive attitude towards CAM and perceived safety of CAM.About 66%(61%,72%)of CAM users did not disclose the use of CAM to their healthcare providers.Conclusion:CAM use is prevalent among individuals with CKD,and healthcare providers should communicate openly and effectively to emphasize the rational use of CAM to avoid potential harm. 展开更多
关键词 complementary and alternative medicine Traditional medicine Chronic kidney disease systematic review META-ANALYSIS
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Carbon efficiency evaluation method for urban energy system with multiple energy complementary
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作者 Xianan Jiao Jiekang Wu +1 位作者 Yunshou Mao Mengxuan Yan 《Global Energy Interconnection》 EI CSCD 2024年第2期142-154,共13页
Urban energy systems(UESs)play a pivotal role in the consumption of clean energy and the promotion of energy cascade utilization.In the context of the construction and operation strategy of UESs with multiple compleme... Urban energy systems(UESs)play a pivotal role in the consumption of clean energy and the promotion of energy cascade utilization.In the context of the construction and operation strategy of UESs with multiple complementary energy resources,a comprehensive assessment of the energy efficiency is of paramount importance.First,a multi-dimensional evaluation system with four primary indexes of energy utilization,environmental protection,system operation,and economic efficiency and 21 secondary indexes is constructed to comprehensively portray the UES.Considering that the evaluation system may contain a large number of indexes and that there is overlapping information among them,an energy efficiency evaluation method based on data processing,dimensionality reduction,integration of combined weights,and gray correlation analysis is proposed.This method can effectively reduce the number of calculations and improve the accuracy of energy efficiency assessments.Third,a demonstration project for a UES in China is presented.The energy efficiency of each scenario is assessed using six operational scenarios.The results show that Scenario 5,in which parks operate independently and investors build shared energy-storage equipment,has the best results and is best suited for green and low-carbon development.The results of the comparative assessment methods show that the proposed method provides a good energy efficiency assessment.This study provides a reference for the optimal planning,construction,and operation of UESs with multiple energy sources. 展开更多
关键词 Urban energy systems(UESs) Multiple energy complementary system Carbon efficiency evaluation Data downscaling Subjective and objective weight Gray correlation analysis
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Silicon limitation on primary production and its destiny in Jiaozhou Bay,China Ⅶ:The complementary mechanism of the earth ecosystem 被引量:8
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作者 杨东方 高振会 +2 位作者 杨应斌 孙培艳 王鑫平 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2006年第4期401-412,共12页
In this paper, the phenomenon that the variation in nutrient and water temperature could cause changes in phytoplankton growth and structure is examined; and the question of how a marine ecosystem make up the earth ec... In this paper, the phenomenon that the variation in nutrient and water temperature could cause changes in phytoplankton growth and structure is examined; and the question of how a marine ecosystem make up the earth ecosystem step by step to auto-sustain the balance between phytoplankton and nutrient supply especially Si is discussed. Three major complementary mechanisms of the earth ecosys- tem for nutrient Si, water temperature and carbon were put forward. Understanding the mechanisms nowadays would explain the why the El Nifio and La Nifia occurred, and forecast the trend of human-impacted the earth, which would alert us with proactive countermeasures. 展开更多
关键词 nutrient Si PHYTOPLANKTON marine ecosystem earth ecosystem complementary mechanism
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Non-dominated sorting culture differential evolution algorithm for multi-objective optimal operation of Wind-Solar-Hydro complementary power generation system 被引量:4
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作者 Guanjun Liu Hui Qin +2 位作者 Rui Tian Lingyun Tang Jie Li 《Global Energy Interconnection》 2019年第4期368-374,共7页
Due to the intermittency and instability of Wind-Solar energy and easy compensation of hydropower, this study proposes a Wind-Solar-Hydro power optimal scheduling model. This model is aimed at maximizing the total sys... Due to the intermittency and instability of Wind-Solar energy and easy compensation of hydropower, this study proposes a Wind-Solar-Hydro power optimal scheduling model. This model is aimed at maximizing the total system power generation and the minimum ten-day joint output. To effectively optimize the multi-objective model, a new algorithm named non-dominated sorting culture differential evolution algorithm(NSCDE) is proposed. The feasibility of NSCDE was verified through several well-known benchmark problems. It was then applied to the Jinping Wind-Solar-Hydro complementary power generation system. The results demonstrate that NSCDE can provide decision makers a series of optimized scheduling schemes. 展开更多
关键词 Wind-Solar-Hydro complementary power generation system Scheduling strategy MULTI-OBJECTIVE optimization CULTURE algorithm
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Performance improvement of complementary feeders using static transfer switch system 被引量:1
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作者 Tahir MAHMOOD Mohammad Ahmad CHOUDHRY 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2009年第2期189-200,共12页
The performance of complementary feeders, running in parallel, can be significantly improved by installing static transfer switches (STSs) at critical locations. We develop the STS control logic, which transfers the... The performance of complementary feeders, running in parallel, can be significantly improved by installing static transfer switches (STSs) at critical locations. We develop the STS control logic, which transfers the critical load from the preferred feeder to the alternate feeder when a voltage sag or a fault occurs on the preferred feeder. A forced commutation technique is proposed and implemented to turn off the preferred feeders' thyristor, thus avoiding cross current to flow and minimizing the transfer time. Simulation results show that the forced commutation technique is more effective as compared to the recently proposed time delay technique for STS operation. Two different feeders, namely New Exchange, the preferred feeder, and Sector 1-10/2, the alternate feeder of Islamabad Electric Supply COmpany (IESCO), Pakistan, have been selected for case studies. The software PSCAD/EMTDC professional package has been used for simulation. 展开更多
关键词 complementary feeder Cross current Static transfer switch (STS) Sensitive load Voltage sag PSCAD/EMTDC
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Kinetic Investigation of Ce,Y-CPAmA Systems and Simultaneous Determination of Sc,Y,Ce via Complementary Tristimulus Spectrophotometry
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作者 成荣明 赵泓 卓宗亮 《Journal of Rare Earths》 SCIE EI CAS CSCD 1992年第3期227-230,共4页
In the past ten years the eomplementary tristimulus speetrophotometryll],eTs,has seen its diverse appli-eations{2一61 though most researehes remain in relatively simpe systems,and less work has been involvinkinetie re... In the past ten years the eomplementary tristimulus speetrophotometryll],eTs,has seen its diverse appli-eations{2一61 though most researehes remain in relatively simpe systems,and less work has been involvinkinetie reaetions. An attemPt has been made on the investigation of some comPlieated systems eontainingrare earths and meta一acetylchloroPhosPhonaz 展开更多
关键词 complementary tristimulus spectrophotometry Kinetic characteristics Simultaneous determination Rare earth
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Using complementary and alternative medicines to prevent and treat pressure ulcers: a systematic review
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作者 Ali Safdari Abdollah Abolfathi +1 位作者 Davood Hekmatpou Fatemeh Mehrabi 《Traditional Medicine Research》 2021年第5期69-81,共13页
Background:Pressure ulcers are skin lesions generated by ischemic conditions caused by pressure on soft tissues.Several studies have investigated complementary and alternative medicine(CAM)as preventative and treatmen... Background:Pressure ulcers are skin lesions generated by ischemic conditions caused by pressure on soft tissues.Several studies have investigated complementary and alternative medicine(CAM)as preventative and treatment measures for pressure ulcers.Therefore,we systematically reviewed the CAM literature in preventing and treating pressure ulcers.Methods:All clinical trial studies which used CAM were included.We searched different databases,including Scientific Information Database,Irandoc,Google Scholar,PubMed,Medline,Scopus,Cochrane Library,Embase,and Science Direct.The following keywords were used:“complementary and alternative medicine-CAM”,“integrative medicine”,“traditional medicine”,“pressure ulcer”,“bedsore”,“pressure sore healing”,and“prevention”.A Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2015 checklist was used to perform analyses.Results:After screening,35 studies were selected.Our investigations suggested that honey,medicinal plants,such as resin salve,Angelica dahurica,Aloe vera,fruits,herbal oils,a combination of several traditional medicine methods,sheepskin,maggot therapy,massage,charcoal,and acupuncture were the most common CAM methods.Conclusion:CAM strategies can prevent and treat pressure ulcers.They reduce wound size,exudate and necrotic tissue levels,inflammation,pain,bleeding,and infections. 展开更多
关键词 complementary therapies traditional medicines PREVENTION HEALING pressure ulcer systematic review
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Evolution logic complementary needs and reform path of China’s marine ecological protection system
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作者 Qi Chen Qiuguang Hu 《Chinese Journal of Population,Resources and Environment》 2021年第2期193-202,共10页
The issue of marine ecology is an institutional one.China’s marine ecological protection system has gone through a process of development from scratch to existence and from less to more.However,there are still many p... The issue of marine ecology is an institutional one.China’s marine ecological protection system has gone through a process of development from scratch to existence and from less to more.However,there are still many problems to be solved,such as whether a variety of complex systems can form a joint force of governance,and whether the rear system failures,deficiencies,and conflicts.Therefore,this paper reviews the evolution logic of China’s marine ecological protection system,explores the complementary space of the existing system from the perspective of institutional complementarity,and analyzes the path of institutional reform of supplement,amendment,and coordination,to promote the effective transition of marine ecological protection system emphasizing quality over quantity.The evolution of China’s marine ecological protection system can be divided into three stages:initial establishment,steady progression,and gradual transformation,showing a trend characterized by a changing governance mode from land-sea division to land-sea integration,a changing supervision mode from government only to multi-institution coordination,a changing safeguard mode from standard norms to the legal system.The internal motivation of promoting the evolution of the marine ecological protection system is the link age between the long-overdue institutional derived demand and supply,and between institutional cost constraints and institutional income drivers.Marine ecological protection is a complex and systematic project across regions and departments,and the link age between different ecological protection systems is crucial.Based on the theory of institutional complementarity,this study finds that China’s marine ecological protection system has great complementarity needs in three aspects:protection subject,protection means,and protection process.Among them,the problem of a single unitary protection subject is mainly caused by the lack of system,the low efficiency of protection means is mainly affected by the lack of system adaptability,and the separation of protection process mainly reflects the contradiction of system incongruity and mismatch.Based on this,the supplement of China’s marine ecological protection system should focus on the government’s responsibilities and the cultivation of multiple subjects.The revision of the system should focus on the further improvement of non-governmental mechanisms such as market incentives and information disclosure.The coordination of the system should be based on the whole process from pre regulation preparations to post-regulation review,in order to promote the effective connection and cooperation of policy tools. 展开更多
关键词 Marine ecological protection Institutional evolution Institutional complementary Governance system
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A New Family of Optical Codes Based on Complementary Theory for OCDMA System
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作者 Xing Chen Weixiao Meng 《Communications and Network》 2013年第3期176-180,共5页
A new family of optical codes for Optical Code-division Multiple Access (OCDMA) systems, named as Optical Complementary Codes (OCCs), is proposed in this paper. The constructions of these codes consist of multiple sub... A new family of optical codes for Optical Code-division Multiple Access (OCDMA) systems, named as Optical Complementary Codes (OCCs), is proposed in this paper. The constructions of these codes consist of multiple sub-codes, and the codes have an auto-correlation interference constraint as 0 and a cross-correlation interference constraint as 1. Compared with conventional optical codes such as OPCs, OOCs and 2-D OOCs, the OCC has a shorter code length and higher code efficiency with better correlation property. 展开更多
关键词 OPTICAL CODE-DIVISION Multiple Access (OCDMA) complementary Code
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Design of the Multi-Energy Complementary Distributed Energy System for Towns
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作者 Tieyin Zhang Weihan Song Song +2 位作者 Shubao Wang Yuegang Wang Yukun Chen 《Journal of Power and Energy Engineering》 2021年第4期53-60,共8页
The multi-energy complementary distributed energy system (MCDES) covers a variety of energy forms, involves complex operation modes, and contains a wealth of control equipment and coupling links. It can realize the co... The multi-energy complementary distributed energy system (MCDES) covers a variety of energy forms, involves complex operation modes, and contains a wealth of control equipment and coupling links. It can realize the complementary and efficient use of different types of energy, which is the basic component of the physical layer of the Energy Internet. In this paper, aiming at the demand of the energy application for towns, a distributed energy system based on multi-energy complementary is constructed. Firstly, the supply condition of the distributed energy for the demonstration project is analyzed, and the architecture of the multi-energy complementary distributed energy system is established. Then the regulation strategy of the multi-energy complementary distributed energy system is proposed. Finally, an overall system scheme for the multi-energy complementary distributed energy system suitable for towns is developed, which provides a solid foundation for the development and promotion of the multi-energy complementary distributed energy system. 展开更多
关键词 Multi-Energy complementary Distributed Energy system system Scheme
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Complementary inverter based on ZnO thin-film transistors 被引量:1
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作者 Dunan Hu Genyuan Yu +2 位作者 Ruqi Yang Honglie Lin Jianguo Lu 《Journal of Semiconductors》 2025年第6期106-110,共5页
Complementary inverter is the basic unit for logic circuits,but the inverters based on full oxide thin-film transistors(TFTs)are still very limited.The next challenge is to realize complementary inverters using homoge... Complementary inverter is the basic unit for logic circuits,but the inverters based on full oxide thin-film transistors(TFTs)are still very limited.The next challenge is to realize complementary inverters using homogeneous oxide semiconduc-tors.Herein,we propose the design of complementary inverter based on full ZnO TFTs.Li-N dual-doped ZnO(ZnO:(Li,N))acts as the p-type channel and Al-doped ZnO(ZnO:Al)serves as the n-type channel for fabrication of TFTs,and then the complemen-tary inverter is produced with p-and n-type ZnO TFTs.The homogeneous ZnO-based complementary inverter has typical volt-age transfer characteristics with the voltage gain of 13.34 at the supply voltage of 40 V.This work may open the door for the development of oxide complementary inverters for logic circuits. 展开更多
关键词 complementary inverter thin-film transistor ZNO n-type channel p-type channel
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Foot reflexology on nausea and vomiting:A systematic review 被引量:1
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作者 Soheila SHAMSIKHANI Mahsa HOSSEINI 《Journal of Integrative Nursing》 2025年第1期42-47,共6页
Nausea and vomiting are physiological responses that react to various bodily conditions and play a protective function.Medicinal and nonmedicinal methods,including complementary medicine,treat nausea and vomiting.The ... Nausea and vomiting are physiological responses that react to various bodily conditions and play a protective function.Medicinal and nonmedicinal methods,including complementary medicine,treat nausea and vomiting.The current research aims to investigate the effectiveness of foot reflexology as a complementary medicine method for nausea and vomiting.Based on PRISMA 2020,PubMed,Web of Science,and Scopus were searched until October 2,2024,using a search strategy approved by two researchers.Only randomized controlled trial studies were included in this research.No limitations or filters were applied.The inclusion criteria were selected based on the PICOS framework,and the studies were evaluated according to the National Institutes of Health quality assessment tool,which is related to controlled intervention,and were evaluated by two researchers.Finally,six studies were included in this review.Eighty-four percent of studies were conducted in Asia.Three records are from Iran,and two are from Turkey,and one is from France.The results showed that nausea and vomiting improved in all studies.In most studies(67%),four sessions or less led to improved outcomes.Rhodes index of nausea,vomiting,and retching and visual analog scale were utilized to assess nausea and vomiting.The current systematic review indicated that foot reflexology as a noninvasive intervention could improve nausea and vomiting in patients with cancer problems,pregnancy,hemodialysis,and laparoscopic cholecystectomy。 展开更多
关键词 complementary medicine foot reflexology nausea and vomiting REFLEXOLOGY systematic review
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Utilizing complementary therapy to enhance quality of life and reduce stress and fatigue in pediatric cancer patients
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作者 Luis Carlos Lopes-Júnior Regina Aparecida Garcia de Lima 《World Journal of Clinical Cases》 2025年第11期12-18,共7页
The international scientific literature presents still incipient results regarding the management of cancer symptom clusters by oncology nursing,especially in pediatric oncology.This is a promising field of investigat... The international scientific literature presents still incipient results regarding the management of cancer symptom clusters by oncology nursing,especially in pediatric oncology.This is a promising field of investigation for clinical nurses and researchers,and when it is subsidized by medium-range theories,they co-rroborate the diagnoses and interventions of nursing in oncology,enhancing the science of nursing care.This minireview article aims to discuss the utilizing the hospital clowns as a complementary therapy,to enhance quality of life and reduce stress and fatigue in pediatric cancer patients.Overall,the evidence presented so far pointed out that complementary therapy might help improve the quality of life of pediatric cancer patients,and that complementary therapy usage should be part of a health comprehensive care model,delivering therapeutic approaches that might enhance the mind-body during a pediatric cancer patients’life span.The results of scientific investigations by nurses,particularly those linked to the basic sciences,play a critical role in advancing personalized care in pediatric integrative oncology. 展开更多
关键词 Cancer symptom clusters PEDIATRICS Pediatric cancer patients Pediatric integrative oncology complementary therapies Oncology nursing Hospital clowns Cancer-related fatigue Psychological stress Biomarkers
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Complementary enhancement between noble metal-like Fe_(3)C and Cu^(0)/Cu^(+)sites to fulfil highly selective wide-potential nitrate electroreduction to ammonia
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作者 Yuxuan Zhou Runlin Xia +4 位作者 Ran Hao Shengjing Li Xinyu Chen Yuping Liu Wei Li 《Journal of Energy Chemistry》 2025年第9期713-723,I0019,共12页
Mild electrocatalytic nitrate reduction reaction(NO_(3)RR),driven by renewable electricity,is regarded as a desirable strategy for green ammonia synthesis and simultaneous removal of nitrogen-containing environmental ... Mild electrocatalytic nitrate reduction reaction(NO_(3)RR),driven by renewable electricity,is regarded as a desirable strategy for green ammonia synthesis and simultaneous removal of nitrogen-containing environmental pollutants.In view of different supply voltages from renewable energy sources,developing costeffective and efficient electrocatalysts with a wide operating potential window is very meaningful for practical application.However,currently reported catalysts usually need to introduce noble metals to synergistically achieve wide-potential selective ammonia synthesis from nitrate.In this work,we present for the first time a dual-transition-metal electrocatalyst(Fe_(3)C-CuO_(x)@NC,x=0,1)with wide-potential-adaptability for highly selective nitrate reduction to ammonia.Such Fe_(3)C-CuO_(x)@NC with spatially separated CuO_(x)and noblemetal-like Fe_(3)C nanoparticles encapsulated with nitrogen-doped graphitized carbon,exhibits outstanding performance in NO_(3)RR with desirable NH_(3)Faraday efficiency of more than 90%over a wide potential ranging from-0.2 V vs.RHE to-0.6 V vs.RHE,comparable to the reported noble metal catalysts.Different from common tandem catalysis,the wide-potential high ammonia selectivity of Fe_(3)C-CuO_(x)@NC is domina ntly ascribed to the complementary enhancement between CuO_(x)and Fe_(3)C,fully supported by results of experiments and density function theory calculations.CuO_(x)exhibit highly intrinsic nitrate reduction to nitrite to compensate for the slow potential determination step(^(*)NO_(3)→^(*)NO_(3)H)of Fe_(3)C,while Fe_(3)C,besides behaving like noble metals to supply adequate active hydrogens,has both good adsorption and reduction abilities for nitrite species to ammonia.Moreover,Fe_(3)C partially stabilizes active Cu^(0)/Cu^(+)sites,and the unique carbon-layer enca psulation structure effectively prevents the agglomeration and corrosion of metal nanoparticles during the electrocatalysis,thus maintaining good cyclic stability.The Zn-NO_(3)^(-)battery assembled with Fe_(3)C-CuO_(x)@NC can reach a high power density of 5.2 mW cm^(-2)at a potential of 1.0 V vs.Zn,with an NH_(3)Faraday efficiency of 92.4%at a current of 8.0 mA,proving its potential practical application.This advance provides unique insights into complementary catalysis mechanisms on multiple metal sites in NO_(3)RR,and offers a reference for the design of other transition metal electrocatalysts matching with renewable electricity. 展开更多
关键词 Nitrate reduction reaction Ammonia synthesis Wide potential window complementary enhancement
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Complementary medicines and ginseng for inflammatory bowel disease-rooted in science,but will it bear fruit?
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作者 Tamar Schildkraut Ashish R Srinivasan +2 位作者 Andrew Nguyen Mark Lai Abhinav Vasudevan 《World Journal of Gastroenterology》 2025年第27期1-14,共14页
This editorial is based on the network pharmacology and in vivo study by Qin et al,which investigated the potential therapeutic mechanisms of Panax ginseng(P.ginseng)in ulcerative colitis.The key findings from the stu... This editorial is based on the network pharmacology and in vivo study by Qin et al,which investigated the potential therapeutic mechanisms of Panax ginseng(P.ginseng)in ulcerative colitis.The key findings from the study included the identification of the targets of P.ginseng and ulcerative colitis,elucidation of mechanistic pathways,and in vivo validation of the pharmacological activity and therapeutic effect of panaxadiol,a key active component of P.ginseng.This editorial provides additional context regarding the evidence supporting the use of ginseng and other commonly used complementary therapies that clinicians may encounter.We also aim to highlight potential similarities between the mechanisms of popular complementary and conventional medical therapies. 展开更多
关键词 Inflammatory bowel disease Crohn’s disease Ulcerative colitis GINSENG complementary and alternative therapies
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