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AAC-HABSA:An Adaptive Aspect Conditioning Framework for Interpretable and Robust Aspect-Based Sentiment Analysis 认领 引用
1
作者 Mahander Kumar Lal Khan +1 位作者 Mohammad Zubair Khan Ibrahim Aljubayri 《Computer Modeling in Engineering & Sciences》 SCIE EI 2026年第7期1043-1071,共29页
Aspect-Based Sentiment Analysis(ABSA)is a fundamental Natural Language Processing(NLP)task that aims to determine fine-grained sentiment polarity toward specific aspects mentioned in text.With the emergence of Large L... Aspect-Based Sentiment Analysis(ABSA)is a fundamental Natural Language Processing(NLP)task that aims to determine fine-grained sentiment polarity toward specific aspects mentioned in text.With the emergence of Large Language Models(LLMs)and transformer-based architectures,significant improvements have been achieved in contextual representation learning for sentiment analysis.However,existing LLM-inspired and transformer-based ABSA frameworks often suffer from inadequate aspect-context alignment,redundant feature integration,limited interpretability,and insufficient coordination between contextual and sequential modeling components.To address these challenges,this paper proposes two hybrid architectures,namely HABSA and AAC-HABSA,centered on a novel Adaptive Aspect Conditioning Layer(AACL)that injects aspect information prior to transformer-based contextual encoding.The proposed framework follows a structured pipeline comprising tokenization,token and positional embeddings,AACL,transformer encoding,BiLSTM refinement,aspect-guided attention,fully connected projection,and focal loss optimization.By conditioning token representations before contextual encoding,the framework enables aspect-aware contextual learning that better captures sentiment-relevant semantic dependencies.Subsequent sequential refinement and attention-based reasoning further enhance sentiment polarity alignment while improving model interpretability.To evaluate the proposed approach,a robust ABSA dataset containing approximately 10,000 recent reviews annotated across five sentiment intensity levels was developed.Extensive experiments demonstrate that HABSA and AAC-HABSA consistently outperform transformer-only and conventional hybrid baselines in terms of accuracy,macro-F1 score,robustness,and attention-based interpretability.The proposed framework provides a computationally efficient,mathematically coherent,and interpretable solution for fine-grained sentiment analysis.By strengthening aspect-aware representation learning within transformer and LLM-oriented sentiment analysis pipelines,this work contributes to the development of scalable and deployable AI-driven opinion analytics systems across real-world domains. 展开更多
关键词 Large language models aspect-based sentiment analysis BI-LSTM attention transformers BERT adaptive aspect conditioning framework AASC
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The impact of metal cleaning agents on components of air conditioning piping systems in EMUs 认领 引用
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作者 Wei Du Bingzu Li +5 位作者 Yanpin Zhu Lunan Jia Dehong Zhang Zhongyu Yi Ruohan Xiang Yishuo Liu 《Railway Sciences》 2026年第4期548-565,共18页
Purpose-In response to the problems of performance degradation,sealing failure and medium leakage of metal components in air conditioning pipelines due to material corrosion,this study intends to lay the foundation fo... Purpose-In response to the problems of performance degradation,sealing failure and medium leakage of metal components in air conditioning pipelines due to material corrosion,this study intends to lay the foundation for exploring the causes of corrosion and optimising anti-corrosion measures in the future,ensuring the safe and stable operation of air conditioning pipelines.Design/methodology/approach-Systematic investigation of corrosion mechanisms and cleaning agent effects was conducted using scanning electron microscopy(SEM),atomic force microscopy,corrosive element detection and cleaning agent immersion tests.Findings-Findings indicate dense corrosion pitting on the tail surface of air conditioning copper tubes(TP2 deoxidised copper),with enriched corrosive Cl and P elements serving as primary corrosion drivers.Under continuous immersion,metal corrosion rates significantly exceed air exposure conditions.Both acidic and alkaline cleaning agents exhibit stronger corrosive effects on carbon steel pressure sections and copper tubes than neutral cleaning agents.Originality/value-The main factors causing corrosion of TP2 deoxygenated copper pipes in air conditioning,the effects of different environments,and types of cleaning agents on the corrosion of pipeline metals have been identified in the study.It provides reliable theoretical support for the optimisation of anti-corrosion design and scientific selection of cleaning agents for air conditioning pipelines. 展开更多
关键词 Metal cleaning agents EMU Air conditioning piping system Corrosion
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Jianpi Huazhuo Xiaoying Decoction plus emotional conditioning for thyroid nodule treatment:Impact on treatment outcomes and anxiety/depression 认领 引用
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作者 Jing Deng Chong Zhang +1 位作者 Yu-Xin Xiao Ling Wang 《World Journal of Psychiatry》 SCIE 2026年第6期167-176,共10页
BACKGROUND Conventional treatments for thyroid nodules(TNs),whether based on Western medicine or limited to emotional regulation,diet,and lifestyle adjustments,have shown modest effectiveness.AIM To evaluate the effic... BACKGROUND Conventional treatments for thyroid nodules(TNs),whether based on Western medicine or limited to emotional regulation,diet,and lifestyle adjustments,have shown modest effectiveness.AIM To evaluate the efficacy of Jianpi Huazhuo Xiaoying Decoction(JPHZXYD),a formula designed to strengthen the spleen,resolve turbidity,and disperse nodules,combined with emotional conditioning therapy in the management of TNs.METHODS A total of 123 patients with TNs(January 2023 to November 2024)were enrolled and divided into two groups:A control group(n=60)receiving conventional nonpharmacological management(emotional guidance,dietary adjustments,and lifestyle modifications)and an observation group(n=63)receiving JPHZXYD plus emotional conditioning therapy.Outcomes compared between the two groups included traditional Chinese medicine symptom scores,anxiety and depression levels,overall treatment effectiveness,TN morphology(number,diameter,and vascularity),pulsatility index,resistance index,thyroid function indicators(free triiodothyronine,free thyroxine,and thyroid-stimulating hormone),and thyroid autoantibodies(thyroid peroxidase antibody and thyroglobulin antibody).RESULTS Compared with both baseline measurements and the control group,the observation group showed significant reductions in traditional Chinese medicine symptom scores,pulsatility index,resistance index,thyroid-stimulating hormone,thyroid peroxidase antibody,and thyroglobulin antibody levels.Patients in the observation group also experienced greater improvements in anxiety and depression,higher overall treatment effectiveness,and more pronounced reductions in TN diameter,number,and microvascular density,along with greater posttreatment increases in free triiodothyronine and free thyroxine levels compared with controls.CONCLUSION JPHZXYD combined with emotional conditioning therapy enhances therapeutic efficacy and alleviates anxiety and depression in patients with TNs. 展开更多
关键词 Jianpi Huazhuo Xiaoying Decoction Emotional conditioning Thyroid nodules Anxiety and depression Treatment outcomes
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OptimizationDesign and Numerical Simulation of Variable Tube Diameter Heat Exchanger for Split Air Conditioning Indoor Unit 认领 引用 被引量：1
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作者 Zheming Cheng Xinping Ou Yang +2 位作者 Leren Tao Zihao Wang Ke Sun 《Frontiers in Heat and Mass Transfer》 EI CAS 2026年第1期288-313,共26页
Energy shortage has become one of themost concerning issues in the world today,and improving energy utilization efficiency is a key area of research for experts and scholars worldwide.Small-diameter heat exchangers of... Energy shortage has become one of themost concerning issues in the world today,and improving energy utilization efficiency is a key area of research for experts and scholars worldwide.Small-diameter heat exchangers offer advantages such as reduced material usage,lower refrigerant charge,and compact structure.However,they also face challenges,including increased refrigerant pressure drop and smaller heat transfer area inside the tubes.This paper combines the advantages and disadvantages of both small and large-diameter tubes and proposes a combined-diameter heat exchanger,consisting of large and small diameters,for use in the indoor units of split-type air conditioners.There are relatively few studies in this area.In this paper,A theoretical and numerical computation method is employed to establish a theoretical-numerical calculation model,and its reliability is verified through experiments.Using this model,the optimal combined diameters and flow path design for a combined-diameter heat exchanger using R32 as the working fluid are derived.The results show that the heat transfer performance of all combined diameter configurations improves by 2.79%to 8.26%compared to the baseline design,with the coefficient of performance(COP)increasing from 4.15 to 4.27~4.5.These designs can save copper material,but at the cost of an increase in pressure drop by 66.86%to 131.84%.The scheme IIIH,using R32,is the optimal combined-diameter and flow path configuration that balances both heat transfer performance and economic cost. 展开更多
关键词 Split air condition variable tube diameter enhanced heat transfer numerical simulation structural design optimization
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Performance Simulation Research on Vapor Compression Condensation Heat Compensation Constant Temperature and Humidity Air Conditioning System under Low Humidity Conditions 认领 引用
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作者 Lianglei Yin Shuhong Li +3 位作者 Jun Wu Jianbing Zhu Jingjie An Wei Sheng 《Energy Engineering》 EI 2026年第9期548-571,共24页
To reduce the reheating energy consumption in traditional constant temperature and humidity air conditioning systems,a constant temperature and humidity air conditioning system with condensation heat compensation func... To reduce the reheating energy consumption in traditional constant temperature and humidity air conditioning systems,a constant temperature and humidity air conditioning system with condensation heat compensation function is proposed.This system performs reheating treatment on the supply air by combining condensation heat recovery with electric heating,realizing decoupled control of temperature and humidity and ensuring control accuracy.A system model and corresponding experimental platform are established to verify the model's accuracy,and the experimental results show that the system has a temperature control accuracy of±0.2℃and a relative humidity control accuracy of±2%.Simulation results indicate that system performance is mainly affected by return air humidity and heat load.The evaporation temperature is mainly affected by return air humidity;when the return air humidity is lower than 25%,the evaporation temperature will reach the lower limit of 0℃,and the system will enter the extreme operating condition,while reducing the face velocity is conducive to increasing the evaporation temperature.The control parameters of heat recovery are mainly affected by return air humidity and heat-moisture load,which should be comprehensively considered during setting. 展开更多
关键词 Constant temperature and humidity air conditioning system condensing heat compensation building energy efficiency cooling dehumidification
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Applicability of Pcms(Phase Change Materials)for Peak Load Shifting of Air Conditioning and Mechanical Ventilation(Acmv)Systems of Office Buildings in Tropical Climates 认领 引用
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作者 Wijewardane,M.A. Figurado,S.A. +2 位作者 Kajaharan,M. Weerasinghe,N.D.A.M. Ranasinghe,R.A.C.P. 《Journal of Civil Engineering and Architecture》 2026年第2期59-65,共7页
Air Conditioning and Mechanical Ventilation(ACMV)Systems are often used to maintain the thermal comfort and the indoor air qualityin office buildings in tropical climates.These ACMVs usually account for more than 5O%o... Air Conditioning and Mechanical Ventilation(ACMV)Systems are often used to maintain the thermal comfort and the indoor air qualityin office buildings in tropical climates.These ACMVs usually account for more than 5O%of the total energy consumption of the buildings.Compared to other available technologies,use of Phase Change Materials(PCMs)has been identified as an attractive innovative technology to reduce the peak cooling load and also to shift the peak cooling load to after office-hours.Temperature of building envelopes constructed using conventional materials such as bricks and concrete tend to vary with the surrounding environmental conditions,as they only absorb or release the sensible heat.On the contrary,PCMs can absorb or release much larger amount of thermal energy fromo the surrounding as latent heat,while maintaining the building envelope temperature unaffected under varying environmental conditions.Thus,conventional building envelopes accompanied with PCMs are able to significantly reduce the external heat gains into the conditioned spaces of the buildings,resulting a significant reduction in the peak cooling load.This study is mainly focused on exploring the applicability of PCMs for hot and humid tropical climates.Numerical analysis supported and validated by an experimental program and a case study revealed that by covering exterior of building envelop with 5 mm-10 mm thick PCMs can reduce the building peak cooling load by 8%-12%.Moreover,it was found that the peak cooling load could be easily shifted to after office hours by increasing the PCM thickness.Economic analysis showed that the PCMs with higher thermal cycles reduces the pay back periods up to 2-3 years and,further supported the use of low-temperature PCMs for building applications.Findings of this study recommend to incorporate the PCMs on the building envelops of the sunlit walls to reduce the peak cooling load of the building with the aim of reducing the energy consumption by the ACMV system. 展开更多
关键词 Air Conditioning and Mechanical Ventilation(ACMV) Building Energy Consumption Building Envelope Peak Cooling Load Phase Change Materials(PCMs).
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Central Air Conditioning Engineering Design for an Office Building in Shenyang 认领 引用
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作者 Jiahe Yang Tangzhen Li 《Journal of Architectural Research and Development》 2026年第1期52-59,共8页
Located in Shenyang(Cold Zone C),this office building is a high-rise structure consisting of 1 basement floor and 9 above-ground floors,with a total height of 48.15 meters and a building area of 28,616.2 m2.It serv... Located in Shenyang(Cold Zone C),this office building is a high-rise structure consisting of 1 basement floor and 9 above-ground floors,with a total height of 48.15 meters and a building area of 28,616.2 m2.It serves as an enterprise office building.The design aims to maintain an indoor temperature of 26℃(60%relative humidity)in summer and 18℃(50%relative humidity)in winter.Using Tianzheng HVAC calculations,the total cooling load is determined to be 1,501.09 kW(with an index of 113.32 W/m2),and the total heating load is 1,454.72 kW(with an index of 109.8 W/m2).System scheme:The ventilation system utilizes fresh air ducts to transport fresh air.Offices and similar spaces employ fan coil units combined with an independent fresh air system(with square diffusers for air supply from above and return air from below,and single-layer louvered return air outlets).Lobbies,ball game rooms,and similar spaces utilize an all-air system(with swirl air outlets for air supply and single-layer louvered return air outlets for return air).The water system in this design employs a closed,return-flow,two-pipe,primary pump system.The cold source equipment is selected as two water-cooled screw chillers(LS850H),while the heat source is connected to the municipal heat network(110/60℃)and exchanges heat through a BR0.2 heat exchanger.Equipment selection includes:chilled water pump ISG-125-200B,cooling water pump IS100-65-315C,and hot water pump IS100-65-315;the pressure maintaining and water replenishing equipment adopts a pressure tank V2-500-460 and a water replenishing pump ISG40-250;the water treatment equipment includes a softened water tank FRP-1.6,a DH-1 type softened water processor,etc.Energy conservation and protection:Equipment is equipped with soft hoses and shock absorbers for noise and vibration reduction;pipelines are insulated with foam rubber or centrifugal glass wool,and air ducts are protected against corrosion with epoxy zinc-rich primer and polyurethane topcoat.Condensate water pipes are protected against corrosion with PVC plastic pipes. 展开更多
关键词 Shenyang Office building Central air conditioning Design
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Optimization method of conditioning factors selection and combination for landslide susceptibility prediction 认领 引用 被引量：10
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作者 Faming Huang Keji Liu +4 位作者 Shuihua Jiang Filippo Catani Weiping Liu Xuanmei Fan Jinsong Huang 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2025年第2期722-746,共25页
Landslide susceptibility prediction(LSP)is significantly affected by the uncertainty issue of landslide related conditioning factor selection.However,most of literature only performs comparative studies on a certain c... Landslide susceptibility prediction(LSP)is significantly affected by the uncertainty issue of landslide related conditioning factor selection.However,most of literature only performs comparative studies on a certain conditioning factor selection method rather than systematically study this uncertainty issue.Targeted,this study aims to systematically explore the influence rules of various commonly used conditioning factor selection methods on LSP,and on this basis to innovatively propose a principle with universal application for optimal selection of conditioning factors.An'yuan County in southern China is taken as example considering 431 landslides and 29 types of conditioning factors.Five commonly used factor selection methods,namely,the correlation analysis(CA),linear regression(LR),principal component analysis(PCA),rough set(RS)and artificial neural network(ANN),are applied to select the optimal factor combinations from the original 29 conditioning factors.The factor selection results are then used as inputs of four types of common machine learning models to construct 20 types of combined models,such as CA-multilayer perceptron,CA-random forest.Additionally,multifactor-based multilayer perceptron random forest models that selecting conditioning factors based on the proposed principle of“accurate data,rich types,clear significance,feasible operation and avoiding duplication”are constructed for comparisons.Finally,the LSP uncertainties are evaluated by the accuracy,susceptibility index distribution,etc.Results show that:(1)multifactor-based models have generally higher LSP performance and lower uncertainties than those of factors selection-based models;(2)Influence degree of different machine learning on LSP accuracy is greater than that of different factor selection methods.Conclusively,the above commonly used conditioning factor selection methods are not ideal for improving LSP performance and may complicate the LSP processes.In contrast,a satisfied combination of conditioning factors can be constructed according to the proposed principle. 展开更多
关键词 Landslide susceptibility prediction Conditioning factors selection Support vector machine Random forest Rough set Artificial neural network
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The potential mechanism and clinical application value of remote ischemic conditioning in stroke 认领 引用 被引量：6
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作者 Yajun Zhu Xiaoguo Li +6 位作者 Xingwei Lei Liuyang Tang Daochen Wen Bo Zeng Xiaofeng Zhang Zichao Huang Zongduo Guo 《Neural Regeneration Research》 SCIE CAS CSCD 2025年第6期1613-1627,共15页
Some studies have confirmed the neuroprotective effect of remote ischemic conditioning against stroke. Although numerous animal researches have shown that the neuroprotective effect of remote ischemic conditioning may... Some studies have confirmed the neuroprotective effect of remote ischemic conditioning against stroke. Although numerous animal researches have shown that the neuroprotective effect of remote ischemic conditioning may be related to neuroinflammation, cellular immunity, apoptosis, and autophagy, the exact underlying molecular mechanisms are unclear. This review summarizes the current status of different types of remote ischemic conditioning methods in animal and clinical studies and analyzes their commonalities and differences in neuroprotective mechanisms and signaling pathways. Remote ischemic conditioning has emerged as a potential therapeutic approach for improving stroke-induced brain injury owing to its simplicity, non-invasiveness, safety, and patient tolerability. Different forms of remote ischemic conditioning exhibit distinct intervention patterns, timing, and application range. Mechanistically, remote ischemic conditioning can exert neuroprotective effects by activating the Notch1/phosphatidylinositol 3-kinase/Akt signaling pathway, improving cerebral perfusion, suppressing neuroinflammation, inhibiting cell apoptosis, activating autophagy, and promoting neural regeneration. While remote ischemic conditioning has shown potential in improving stroke outcomes, its full clinical translation has not yet been achieved. 展开更多
关键词 Akt apoptosis autophagy cerebral perfusion cerebral vascular stenosis clinical transformation hemorrhagic stroke ischemic stroke neuroinflammation neuroprotection Notch1 PI3K remote ischemic conditioning stroke
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A novel flood conditioning factor based on topography for flood susceptibility modeling 认领 引用 被引量：1
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作者 Jun Liu Xueqiang Zhao +3 位作者 Yangbo Chen Huaizhang Sun Yu Gu Shichao Xu 《Geoscience Frontiers》 SCIE CAS CSCD 2025年第1期209-222,共14页
Flood is one of the most devastating natural hazards.Employing machine learning models to construct flood susceptibility maps has become a pivotal step for decision-makers in disaster prevention and management.Existin... Flood is one of the most devastating natural hazards.Employing machine learning models to construct flood susceptibility maps has become a pivotal step for decision-makers in disaster prevention and management.Existing flood conditioning factors inadequately account for regional characteristics of flood in the depiction of topography,potentially leading to an overestimation of flood susceptibility in flat areas.Addressing this gap,this study proposes a novel flood conditioning factor,local convexity factor(LCF),to enhance the accuracy of flood susceptibility modeling.Initially,LCF is computed based on a standard normal Gaussian surface to highlight elevation variations in local terrain.Subsequently,LCF is applied to flood susceptibility modeling using seven machine learning models across four distinct basins.Comparative analysis is conducted between flood susceptibility maps with and without the application of LCF to evaluate its impact on flood susceptibility modeling.The results demonstrate that the proposed LCF can enhance the accuracy of flood susceptibility modeling to varying degrees,across the four basins investigated.The Fujiang basin exhibited the most substantial improvement,with its AUC improved from 0.861 to 0.886,Producer’s Agreement improved from 0.869 to 0.899,and Overall Agreement improved from 0.778 to 0.811.Comparation with hydrodynamic inundation maps shows that particularly in relatively flat terrain areas,flood susceptibility maps incorporating LCF offer more precise delineation between flood-prone and non-flood-prone zones.This research holds potential for widespread application in the prediction of flood susceptibility using machine learning models,providing a novel perspective for enhancing their accuracy. 展开更多
关键词 Flood susceptibility prediction Flood conditioning factor Machine learning model Local terrain features
Chemical-microwave-ultrasonic compound conditioning treatment of highly-emulsified oily sludge in gas fields 认领 引用 被引量：3
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作者 Su Biyun Huang Li +3 位作者 Li Shanjian Ding Liqin Liu Bo Zhang Ao 《Natural Gas Industry B》 2019年第4期412-418,共7页
The highly-emulsified oily sludge in gas fields is complex in components and serious in emulsification,which makes effective reduction extremely difficult only by a single direct mechanical separation method such as m... The highly-emulsified oily sludge in gas fields is complex in components and serious in emulsification,which makes effective reduction extremely difficult only by a single direct mechanical separation method such as microwave heating,ultrasonic treatment,chemical conditioning,etc.In view of this,this paper presented a new chemical-physical compounding conditioning technology for such highly emulsified oily sludge in gas fields.The experimental samples,from the Mizhi Natural Gas Processing Plant of PetroChina Changqing Oilfield Company,were treated through chemical conditioning,from which the optimal formula,dosages and dosing order were determined.On this basis,the compound technology of chemical-physical conditioning was applied to reduce the specific resistance to filtration(SRF)of the sludge,thus achieving a satisfactory result.The following results were obtained.(1)The chemical conditioning agent with the formula of the oxidant MN-S,calcium oxide and sodium hydroxide was proved to achieve the fastest dewatering speed,and the specific resistance of sludge can be reduced from 130.3 to 3.81 trillion m3 per kg.(2)Comparison between microwave and ultrasonic conditioning methods shows that the latter is better in reducing the SRF(the ultrasonic frequency of 40 kHz was applied to reduce the SRF down to 14.01 trillion m3 per kg after 4 min of conditioning treatment).(3)The ultrasonic treatment effect after chemical conditioning is the best;the SRF was reduced to 2.77 trillion m3 per kg,and the moisture content of the sludge after mechanical dewatering was only 68.71%,decreased by 21.46%compared with the original content of 90.17%.In conclusion,this presented chemical-microwave-ultrasonic compound conditioning technology can reduce the sludge's SRF and the moisture content of filter cakes so as to achieve effective reduction of the highly-emulsified sludge in gas fields. 展开更多
关键词 Highly emulsified oily sludge Microwave conditioning Ultrasonic conditioning Chemical conditioning Chemical-Physical compound conditioning Specific resistance to filtration(SRF)of sludge Effective reduction
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Analysis of Air Conditioning Unit Performance Due to Variations in Water Cooling Temperature Using an Extra Cooling Water Loop 认领 引用
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作者 Noor Moneer Basher Omar Rafae Alomar +1 位作者 Omar Mohammed Ali Diyar Abdullah Ahmed 《Frontiers in Heat and Mass Transfer》 EI CAS 2025年第6期2001-2024,共24页
The energy consumption of a Split air conditioning unit(ACU)inside a building is extremely large,and efforts to decrease this issue are ongoing.The current work aims to experimentally investigate the thermal performan... The energy consumption of a Split air conditioning unit(ACU)inside a building is extremely large,and efforts to decrease this issue are ongoing.The current work aims to experimentally investigate the thermal performance of ACU using an external cooling-water loop for pre-cooling the condenser to improve the efficiency and to reduce energy consumption by reducing refrigerant temperature before entering the condenser,thereby reducing the coefficient of performance.The experiments are performed on ACU with and without using an external cooling-water loop under different climate conditions.By using the experimental data,the systems’performances for both cases are evaluated based on the energy,exergy,and pressure drop analysis.Effects of several parameters,e.g.,ambient temperature,inlet water temperature,and water volume flow rate,on the energy and exergy performances of ACU systems are presented for the purpose of comparison.The outcomes display that the use of an external cooling water loop system has a significant impact on the system performance as compared to conventional ACU.The results display that the addition of an external cooling-water loop leads to a reduction in the compressor power consumption and to an increase in the coefficient of performance(COP)as compared to a normal ACU.The maximum reduction in compressor power consumption is obtained equal 37%at Tw=15℃and 11 L/min,whereas the maximum enhancement in COP is obtained equal 21.5%at Tw=30℃,11 L/min,and Tamb=45℃.The modified model shows an increase in exergy efficiency with the maximum enhancement of about 17%at Tw=30℃and 15.8 L/min.The use of an external cooling water loop leads to a reduction in the irreversibility process of the compressor,evaporator and expansion valve and to an increase in the condenser losses.The outcomes show that the pressure drop is reduced by using a cooling water loop as compared to a normal ACU,where the reduction becomes more evident with a reduction in water volume flow rate and inlet temperature.Finally,the present study reveals that the use of an external cooling water loop system leads to an improvement in the performance of ACUs. 展开更多
关键词 Air conditioning unit energy exergy water heat exchanger pressure drop pre-cool condenser
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Improving the Performance of Thermoelectric Systems for Air Conditioning Using Different Configurations 认领 引用
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作者 Hind Abdulrahman Mahmood Ameer Abed Jaddoa Mohammed K.Al-Saadi 《Frontiers in Heat and Mass Transfer》 EI CAS 2025年第4期1281-1302,共22页
Thermoelectric air conditioning systems based on the Peltier effect had two modes:heating and cooling.In this work,the proposed design provides continuous improvement in COP from the first minute of operation.In cooli... Thermoelectric air conditioning systems based on the Peltier effect had two modes:heating and cooling.In this work,the proposed design provides continuous improvement in COP from the first minute of operation.In cooling mode,the coefficient of performance(COP)was 1.176 due to the techniques used in this device,and it increased to 1.24 in the last minute of operation.Concerning the steady-state scenario,from the first minute,the Qc was larger than the W for the entire duration of the operation.The output temperature reaches 18.97℃ ,and the temperature on the cold side reaches 4.96℃ in the fifteen minutes of operation.The cooling mood was checked in Iraq/Baghdad in October with a temperature of 31℃ .Furthermore,the heating mode was checked in December with a temperature of 22℃ .Due to the size of the component on the cold side being small compared with the size of the component on the heat side,it reached a steady state in 13 min.This means the COP in heating mode reached 1.01 in 14 min.Furthermore,due to the presence of a thermal insulator made inside the device to separate the cold side and the hot side,the difference in temperature causes a noticeable little ascent.This is why the COP increased because it kept the degree differences low.Performance enhancements were achieved by optimizing the behavior of thermoelectric materials.The device contains 3 Peltier elements,a water-cooled system with one Peltier,a heat sink,and a fan.The design of the dehumidification system addresses the humidity issue commonly associated with thermoelectric air conditioners.In this context,the results indicate that the humidity rates had decreased and the cooling rate had increased with these innovative techniques,and thus,excellent performance can be achieved even if the Seebeck coefficient is not at its highest based on the condition of providing the Peltier elements’reliability and optimal thermal performance for various applications requiring both cooling and heating functions.The insulation plays a critical role in maintaining the efficiency of the system,reducing energy consumption,and ensuring long-term functionality.The proposed system is valuable for devices or environments that demand precise and dual thermal control with minimal energy wastage. 展开更多
关键词 Peltier effect Seebeck coefficient COP thermoelectric air conditioning performance enhancement
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Development of a Liquid Desiccant Air Conditioning System Using Ionic Liquids 认领 引用
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作者 Hiroshi Nakayama Masatoshi Harada Xinming Wang 《Journal of Civil Engineering and Architecture》 2025年第2期74-81,共8页
LDACs(liquid desiccant air-conditioners)with heat pump can perform cooling dehumidification or heating humidification,and have high energy-saving and sterilization performance.Therefore,they are installed in hospitals... LDACs(liquid desiccant air-conditioners)with heat pump can perform cooling dehumidification or heating humidification,and have high energy-saving and sterilization performance.Therefore,they are installed in hospitals,nursing homes,and food factories,where humidity control is required.However,LiCl(lithium chloride),a conventional humidity control liquid,is highly corrosive to metals,requiring the use of highly corrosion-resistant materials for the pipes and the heat exchangers.These lead to the problem that the manufacturing cost of the air conditioner increases.Therefore,we developed an inexpensive and compact LDAC by adopting a novel IL(ionic liquid)that does not corrode the metals commonly used in air conditioners.In this study,we evaluated the metal solubilities and sterilizing properties of the IL.Based on the physical properties of the IL,the humidity control module was improved for the purpose of downsizing and cost reduction of the unit.Moreover,we conducted a performance evaluation of the LDAC in the environmental test room under the condition in which temperature and humidity change rapidly in short period of time to simulate the condition of sudden showers of rain in summer.Test results showed that processed air was supplied at very stable level. 展开更多
关键词 Liquid desiccant air conditioning ILs heat pump dehumidification
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A Novel Aircraft Air Conditioning System with a Sterilization Unit by Ultra-High-Temperature Air Stream 认领 引用 被引量：3
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作者 SUN Zhi SUN Jianhong CHEN Siyu 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2020年第4期646-654,共9页
An aircraft cabin is a narrow,closed-space environment.To keep the air quality in cabin healthy for passengers,especially during an epidemic such as SARS-CoV-2(or 2019-nCoV)in 2020,a novel aircraft air conditioning sy... An aircraft cabin is a narrow,closed-space environment.To keep the air quality in cabin healthy for passengers,especially during an epidemic such as SARS-CoV-2(or 2019-nCoV)in 2020,a novel aircraft air conditioning system,called the ultra-high-temperature instantaneous sterilization air conditioning system(UHTACS),is proposed.Based on the proposed system,a simulation of the UHT-ACS is analysed in various flight states.In the UHT-ACS,the mixing air temperature of return and bleed air can reach temperature up to 148.8°C,which is high enough to kill bacilli and viruses in 2一8 s.The supply air temperature of the UHT-ACS in a mixing cavity is about 12 C in cooling mode both on the ground and in the air.The supply air temperature is about 42 C in heating mode.Compared with the air conditioning systems(ACS)of traditional aircraft the supply air temperatures of the UHT-ACS in the mixing cavity are in good agreement with those of a traditional ACS with 60%fresh air and 40%return air.Furthermore the air temperature at the turbine outlet of the UHT-ACS is higher than that of a traditional ACS which will help to reduce the risk of icing at the outlet.Therefore the UHT-ACS can operate normally in various flight states. 展开更多
关键词 air conditioning system(ACS) ultra-high-temperature instantaneous sterilization ultra-hightemperature instantaneous sterilization air conditioning system(UHT-ACS) return air 2019-nCoV
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Exploration of the Application of Remote Ischemic Conditioning in Nursing of Cardiac Arrest 认领 引用
16
作者 Yi-maizi Xu Mingyue Yang +3 位作者 Fangchi Liu Chao Zhang Yimeng Yan Zhixian Feng 《Journal of Clinical and Nursing Research》 2025年第4期121-129,共9页
Cardiac arrest(CA)is a major global public health challenge,and its high morbidity and low survival rate pose severe tests for emergency and critical care.Although modern CPR techniques significantly improve the immed... Cardiac arrest(CA)is a major global public health challenge,and its high morbidity and low survival rate pose severe tests for emergency and critical care.Although modern CPR techniques significantly improve the immediate resuscitation success rate in CA patients,poor outcomes such as neurological impairment still significantly increase the long-term care burden and reduce the quality of survival.In recent years,the application of remote ischemic conditioning(RIC)has attracted much attention in the field of cardiac arrest through its unique myocardial-nerve dual protection mechanism against the heart.This paper summarizes the conceptual connotation,physiological mechanism,operation method,and its application progress in CA and explores the potential of this technology in the field of CA care in order to provide reference for the research and application of RIC in the field of emergency care. 展开更多
关键词 Remote ischemic conditioning Cardiac arrest Nursing Review
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Study on the Impact of Humidity Control Strategy on Energy Saving Effect of Centralized Central Air Conditioning System 认领 引用
17
作者 Xiaolian Lin 《Journal of Electronic Research and Application》 2025年第4期303-309,共7页
As an indispensable part of modern buildings,centralized central air conditioning systems play an important role in maintaining the comfort and air quality of the indoor environment.However,with the increasing energy ... As an indispensable part of modern buildings,centralized central air conditioning systems play an important role in maintaining the comfort and air quality of the indoor environment.However,with the increasing energy consumption,how to improve the energy efficiency ratio of air conditioning systems and reduce energy consumption has become an important issue in research and practice.The purpose of this paper is to discuss the impact of humidity control strategies on energy saving in centralized central air conditioning systems,with a view to providing a theoretical basis and practical guidance for realizing building energy efficiency. 展开更多
关键词 Centralized central air conditioning system Energy saving potential Humidity control strategy Energy saving effect assessment
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Research on the Path of Integrating Innovation and Entrepreneurship Education into the Curriculum Ideology and Politics of Refrigeration and Air Conditioning Major in Colleges and Universities 认领 引用
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作者 Tianjiao Zhang Xi Chen +1 位作者 Ni Liu Zhaorui Zhao 《Journal of Contemporary Educational Research》 2025年第9期398-404,共7页
In the background of reform of higher education in the new era,how to organically integrate innovation and entrepreneurship education with curriculum ideology and politics has become a key proposition for deepening th... In the background of reform of higher education in the new era,how to organically integrate innovation and entrepreneurship education with curriculum ideology and politics has become a key proposition for deepening the reform of education and teaching.As an important branch in the field of engineering,the refrigeration and air conditioning major not only undertakes the professional mission of cultivating technical talents in the industry,but also shoulders the era responsibility of implementing the fundamental task of cultivating morality and talents.Combining with the characteristics of the refrigeration and air conditioning major,this paper systematically analyzes the internal logic and practical significance of the integration of innovation and entrepreneurship education and curriculum ideology and politics,and explores its implementation paths in aspects such as the excavation of curriculum content,the innovation of teaching methods,the construction of practical platforms and the optimization of evaluation systems.It aims to provide practical reference and theoretical support for promoting the collaborative education of professional education and ideological and political education. 展开更多
关键词 Innovation and entrepreneurship education Curriculum ideology and politics Refrigeration and air conditioning Education reform
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Status and Application of Tobacco Leaf Preconditioning in China 认领 引用 被引量：2
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作者 Yingjie LIU Wen LIU +2 位作者 Yue ZHU Jiangtao JI Jun WANG 《Agricultural Science & Technology》 CAS 2017年第1期180-184,共5页
In the process of tobacco production, the moisture content of tobacco leaves directly affects the quality of tobacco leaf. Since the water content in the leaf is low, it needs to process with the conditioning treatmen... In the process of tobacco production, the moisture content of tobacco leaves directly affects the quality of tobacco leaf. Since the water content in the leaf is low, it needs to process with the conditioning treatment for a short time beforetobacco grading, so as to improve the tobacco moisture content and reduce breakage, as well as ensure the quality and yield of tobacco, ahd meet the requirements of the follow-up process of tobacco. Therefore, a comprehensive overview was given to the pre-conditioning method for tobacco leaf, and the current application status of tobacco leaf pre-conditioning equipment in China was explored. 展开更多
关键词 Tobacco leaf Pre-conditioning Conditioning equipment Water content
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Establishment of Visual Fear Conditioning in Long-evans Rats 认领 引用
20
作者 Xiaoyuan Li Yun Liu +2 位作者 Hongyu Si Peng Wu Zhenlong Wang 《Chinese Journal of Biomedical Engineering(English Edition)》 CAS 2020年第3期10-17,共8页
The neural mechanisms underlying visual information transmission and coding are currently attracting the attention of neuroscience and brain-like computing scholars.The subcortical visual pathway is known to affect fe... The neural mechanisms underlying visual information transmission and coding are currently attracting the attention of neuroscience and brain-like computing scholars.The subcortical visual pathway is known to affect fear emotion regulation via the amygdala;however an experimental paradigm for visual fear cognition training remains undefined.In this study,Long-Evans(LE)rats were used to develop an experimental training paradigm for visual cognition-associated fear conditioning based on the Pavlovian conditioning reflex.Simple images were shown on a unilateral screen(conditioned stimulus)were combined with electric foot shocks(unconditioned stimulus).We designed training paradigms and set up an estimated index using the rate of successful active escape.The training results were analyzed using a two-way ANOVA,and curve fitting was used to analyze the influence of decision time between the conditioned stimulus(CS)and unconditioned stimulus(US)on choice behavior.While neither the CS nor US had a significant effect on visual fear association training in LE rats,the decision time duration(CS-US)did have an impact on training.The method described here is most effective in establishing visual fear associations in rats when the(CS-UC)=10 s.This study describes a new experimental training paradigm for fear conditioning using visual stimuli and a quantitative evaluation standard according to the training mode of visual stimulation graphics.Moreover,it is an efficient paradigm for future study on visual information-processing mechanisms in the subcortical visual pathway during fear conditioning. 展开更多
关键词 Fear conditioning Visual information Long-evans rats Unconditioned stimulus Conditioning stimulus
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