Impact of Varying Blower Opening Degrees on Indoor Environment and Thermal Comfort

At present,air handling units are usually used indoors to improve the indoor environment quality.However,while introducing fresh air to improve air quality,air velocity has a certain impact on the occupants’thermal comfort.Therefore,it is necessary to explore the optimization of air-fluid-body interaction dynamics.In this study,the indoor air flow was changed by changing the opening and closing degree of the blower,and the thermal manikin is introduced to objectively evaluate the human thermal comfort under different air velocities.The main experimental results show that the air change rate increases with the increase of the opening and closing degree of the blower considering an ACH(air changes per hour)range between 3.8 and 10.For a better prediction,a linear correlation with a coefficient of 0.995 is proposed.As the blower’s opening is adjusted to 20%,25%,30%,35%,and 40%,the air velocity sensor positioned directly beneath the air inlet records average velocities of 0.19,0.20,0.21,0.28,and 0.34 m/s over four hours,respectively.Observations on thermal comfort and the average sensation experienced by individuals indicate an initial increase followed by a decline when the blower’s operation begins,with optimal conditions achieved at a 35%opening.These findings offer valuable insights for future indoor air ventilation and heat transfer design strategies.

Changing Characteristics of Comfort Index of Human Body in Bengbu City in the Past 40 Years under the Background of Climate Change

Based on the daily meteorological data of Bengbu City during 1981-2020,the changing characteristics of three elements needed for the calculation of the comfort index of human body(CIHB)were discussed,and daily CIHB was classified and discussed.The results show that from 1981 to 2020,annual average temperature tended to increase significantly.Annual average wind speed and relative humidity showed a decreasing trend before 2011 but an increasing trend after 2011.The duration of the four seasons in Bengbu City mainly rose in spring,reduced in winter,declined first and then increased in summer,and rose first and then decreased in autumn.As CIHB was at grades 1 and 9(the most uncomfortable),the three factors had different effects on them.For cold weather,the influence of relative humidity and wind speed on CIHB can not be ignored besides temperature.In hot weather,the influence of temperature was dominant,and the change of annual average temperature could well correspond to the change in the number of very hot days.In the context of climate warming,the number of cold days tended to decline generally,but it was larger in the years with fewer very cold days.Under the background of climate warming,there was no obvious change in the number of days of the overall comfort of human body.The number of hot days was closely related to the duration of summer,and the number of days of grade 8 rose significantly in the years with an increase in the duration of summer.

Research Characteristics of Thermal Comfort of Urban Block Landscape Based on Knowledge Graph Analysis

The landscape environment of urban blocks plays a significant role in improving the comfort of urban thermal environment and promoting green and high-quality development.The 342 papers related to the research on the impact of urban block landscape environment on thermal comfort in China,collected by CNKI(China National Knowledge Infrastructure)from 2002 to 2022,are used as the research object.Through bibliometric statistical analysis,LLR algorithm,and cluster analysis,the current research status of the impact of urban block landscape environment on thermal comfort in China is analyzed and processed,and its external characteristics are identified.Using the information visualization software CiteSpace,the research topics in the field of the impact of urban block landscape environment on thermal comfort are presented in the form of knowledge graphs.Through co-occurrence analysis of keywords and trend of word frequency changes,the development trends of research hotspots and cutting-edge fields of the impact of urban block landscape environment on thermal comfort are determined,hoping to provide reference for future research in this field.

Optimisation of Thermal Comfort of Building in a Hot and Dry Tropical Climate: A Comparative Approach between Compressed Earth/Concrete Block Envelopes

Compressed earth blocks (CEB) are an alternative to cement blocks in the construction of wall masonry. However, the optimal architectural construction methods for adequate thermal comfort for occupants in hot and arid environments are not mastered. This article evaluates the influence of architectural and constructive modes of buildings made of CEB walls and concrete block walls, to optimize and compare their thermal comfort in the hot and dry tropical climate of Ouagadougou, Burkina Faso. Two identical pilot buildings whose envelopes are made of CEB and concrete blocks were monitored for this study. The thermal models of the pilot buildings were implemented in the SketchUp software using an extension of EnergyPlus. The models were empirically validated after calibration against measured thermal data from the buildings. The models were used to do a parametric analysis for optimization of the thermal performances by simulating plaster coatings on the exterior of walls, airtight openings and natural ventilation depending on external weather conditions. The results show that the CEB building displays 7016 hours of discomfort, equivalent to 80.1% of the time, and the concrete building displays 6948 hours of discomfort, equivalent to 79.3% of the time. The optimization by modifications reduced the discomfort to 2918 and 3125 hours respectively;i.e. equivalent to only 33.3% for the CEB building and 35.7% for the concrete building. More study should evaluate thermal optimizations in buildings in real time of usage such as residential buildings commonly used by the local middle class. The use of CEB as a construction material and passive means of improving thermal comfort is a suitable ecological and economical option to replace cementitious material.

Wearable Inflatable Massage Chair:The Future of Comfort

With the continuous advancement of science and technology,our lifestyles are undergoing significant changes,with wearable technology emerging as a captivating trend.In this digital era,there is a growing demand for solutions that cater to people’s needs for health and comfort.The wearable inflatable massage chair represents one such innovation designed to meet these evolving needs.This project is focused on creating a“wearable and portable massage chair”that is both convenient and lightweight.It serves as a massage solution particularly beneficial for the elderly and sedentary individuals.This innovative chair can be used by the elderly during outings or errands,as well as by office workers on business trips,while driving,or commuting via subway.Users can simply lean against the seat or a wall,enjoying moments of relaxation amid the busy and fast-paced modern era.

Analysis of the Effect of Comfort Care in The Perioperative Care of Patients with Hysteromyomectomy and its Influence on Self-Care Ability

Objective:To analyze the effect of perioperative comfort care for patients with hysteromyomectomy(HYS).Methods:Seventy cases of HYS patients admitted to our hospital from October 2022 to October 2023 were randomly selected and divided into Group A(control group,35 cases,conventional care)and Group B(observation group 35 cases,comfort care).The effects of the two groups before and after nursing care were compared.Results:The self-rating anxiety(SAS)scores,exercise of self-care agency(ESCA)scores,and nursing satisfaction scores at the time of discharge of Group B were better than in Group A after nursing care(P<0.05).Conclusion:Perioperative comfort care for HYS patients improved the patient’s adverse emotions,self-care ability,and nursing satisfaction.

LENTIS Comfort Toric人工晶状体植入术后视觉质量分析

目的:探讨白内障手术中植入LENTIS Comfort Toric人工晶状体后的视觉质量。方法:回顾性对照临床研究,收集数字化导航辅助下白内障超声乳化摘除联合人工晶状体植入术患者40例40眼,植入LENTIS Comfort Toric(MF15T)人工晶状体为A组(24眼),植入单焦点Toric人工晶状体为B组(16眼);观察术后3mo不同距离视力、术后散光质心值、脱镜率、离焦曲线变化以及人工晶状体稳定性等。结果:两组患者术后均无严重并发症出现,两组术后3mo远视力无差异(P>0.05);A组中视力、近视力明显优于B组(P<0.01);A组术后脱镜率为99%,B组为45%(P<0.05);两组术后3mo散光质心值均较术前改善,但组间无差异(P>0.05);术后3mo A组离焦曲线于+0.50、-1.75D分别出现峰值,形成平台并平缓下降,B组于+0.25、-0.25D出现峰值后呈陡峭趋势下降。术后1d A组出现1眼(4%)人工晶状体轴位旋转大于10°;B组出现6眼(38%)人工晶状体轴位旋转大于10°,2眼(33%)顺时针旋转,4眼(67%)逆时针旋转;两组均无人工晶状体移位发生。结论:两种人工晶状体均可矫正散光,其中LENTIS Comfort Toric人工晶状体能为白内障合并散光人群提供个性化的选择,可同时解决散光和获得全程视力,术后光学干扰发生率低,稳定性更好,视觉质量及满意度高。

Analysis of the Thermohydro - comfort Durability for Microfil - polypropylene Knitted Fabric under Grey System

Thin microfll - polypropylene knitted fabric that is knitted to use new single plated theory on large diameter circular weft knitting machine is a new functional fabric. After military use, the reflective opinions are that it is light, thin, soft, smooth - touch, and it has excellent elasticity, good air perviousness, large water vapor permeability . In this paper, an analysis is held to use grey system theory, and the thermohydro - comfort durability of this microfil - polypropylene knitted fabric is compared with that of common knitted fabrics. The analytical result proves the microfil - polypropylene knitted fabric is satisfactory under the climatic conditions that human body needs to eliminate or retain the quantity of heat. It can be use to seam up not only physical ability training uniform of serviceman but also civil sporty and sportswear et cetera.

Effect of internet multiple linkage mode-based extended care combined with in-hospital comfort care on colorectal cancer patients undergoing colostomy

BACKGROUND Patients with colorectal cancer may need postoperative nursing to improve prognosis,and conventional nursing is not effective.Clinical research is needed to explore nursing methods that can more effectively improve postoperative conditions on colorectal cancer patients undergoing colostomy.AIM To explore the effect of internet multiple linkage mode-based extended care combined with in-hospital comfort care on colorectal cancer patients undergoing colostomy.METHODS Data from 187 patients with colostomy treated in our hospital from May 2019 to March 2022 were collected and divided into three groups,A(n=62),B(n=62)and C(n=63),according to different intervention methods.Group A received internet multiple linkage mode-based extended care combined with in-hospital comfort care.Group B received internet multiple linkage mode-based extended care.Group C received usual care intervention.Complications were compared among the three groups.The stoma self-efficacy scale,Hamilton Anxiety Scale,RESULTS The complication rate of group A,B and C(16.13%,20.97%and 60.32%,respectively)was significantly different(all P<0.05).The incidence of complications in groups A and B was lower than that in group C,and there was no significant difference between groups A and B(P>0.05).After intervention,the scores of ostomy care,social contact,diet choice,confidence in maintaining vitality,confidence in self-care of ostomy,confidence in sexual life,confidence in sexual satisfaction and confidence in physical labor in the three groups were all higher than before intervention,and the scores of groups A and B were higher than those of group C,with statistical significance(P<0.05).The Hamilton Anxiety Scale and Hamilton Depression Scale scores of the three groups after intervention were lower than those before intervention.The scores of groups A and B were lower than those of group C,and the score of group A was lower than that of group B,all with statistical significance(all P<0.05).There was a statist-ically significant difference in cancer-induced fatigue among the three groups(P<0.05).After intervention,the scores of physical health,psychological health,social health and mental health of the three groups were lower than before the intervention.The scores of group A and B were lower than that of group C;and the score of group A was lower than that of group B,all with statistical significance(all P<0.05).CONCLUSION Internet multiple linkage mode-based extended care combined with in-hospital comfort care can effectively improve self-efficacy,bad mood,cancer-related fatigue and life quality of colorectal cancer patients undergoing colostomy.

Experimental Mode and Vibration Comfort Analysis of High-Rise Glulam Building Floor Structure

In order to better meet the objective requirements of the use safety of the high-rise glulam building floor structure and the living comfort of the residents,the transient excitation,environmental excitation and frequency spectrum identification methods were used to carry out experimental modal test in-site on the three rooms numbered A,B and C of the same glulam structural building.The three rooms have different functions,different floor sizes and different floor supporting structures.The research results have shown that the first-order bending frequency of the floor structure of Room A is 27.50 Hz,the transverse second-order bending frequency is 34.75 Hz,the longitudinal second-order bending frequency is 53.25 Hz,and the first-order torsional frequency is 56.25 Hz.The reinforced wooden beam at the bottom of the floor of Room A increases the transverse stiffness of the floor structure,but does not offset the anisotropy caused by the longitudinally installed glulam floors.The fundamental frequency values of the floor structures of the three rooms numbered A,B,and C are 27.5,13 and 18 Hz,respectively.This has a relatively high innovation and reference significance for integrating the theory of structural dynamic characteristics with the dynamic testing technology,improving the design level of high-rise glulam structure buildings,and improving the living comfort of residents.

Nurse Care and Comfort in the Puerperium of Girls/Women: Protocol for a Scoping Review

Purpose: Carrying out a scoping review to fill gaps in current knowledge regarding comfort needs in the care provided by nurses to girls/women who experience puerperium. Methods: The procedures guided by the Joanna Briggs Institute will be applied. The searches will be carried out in the Medical Literature Analysis and Retrieval System Online, Excerpta Medica Database, Cumulative Index to Nursing and Allied Health Literature, Cochrane Library, Scopus, Web of Science, Latin American and Caribbean Health Sciences Literature, Nursing Database, Scientific Electronic Library databases. Studies which are available in full and published in English, Spanish or Portuguese will be selected. There will be no restrictions to the study design or time frame. Two reviewers will independently screen all citations with the aid of software. The degree of agreement between the researchers will be verified by statistics that measure reliability. Through narrative descriptions, charts, and tables, we will present the results obtained. Data analysis will involve descriptive statistics, and qualitative evaluation. We will use the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews checklist to review and write this review. Conclusion: We will summarize the main information available in the literature on the subject, aiming to obtain an overview of the practices employed, and the gaps present in knowledge that require greater attention from the scientific community.

Does orthotics use improve comfort,speed,and injury rate during running?A randomised control trial

BACKGROUND Running is a hugely popular sport.Unfortunately,running-related injury(RRI)rates are high,particularly amongst amateur and recreational runners.Finding ways to reduce RRI rates and maximise comfort and performance for runners is important.Evidence regarding whether orthotics can successfully improve these parameters is limited and contradicting.Further research is required to provide runners with clearer guidance on the usefulness of orthotics.AIM To investigate the effect of Aetrex Orthotics on comfort,speed and RRI rates during recreational running.METHODS One hundred and six recreational runners were recruited on a voluntary basis via running clubs and social media pages and randomised into either the intervention or control group.Participants in the intervention group ran with Aetrex L700 Speed Orthotics inserted in their usual running shoes,whilst participants in the control group ran in their usual running shoes with no orthotics.The study ran for an 8-wk period.Participants provided data relating to running comfort,distance,and time during weeks 3-6.Participants provided data relating to any RRIs they sustained during all 8 wks.Running distance and time were used to calculate running speed in miles per hour(mph).For each outcome variable,95%confidence intervals and P values were calculated to assess the statistical significance between the groups.For comfort and speed data,univariate multi-level analysis was performed,and for outcome variables with significant between group differences,multi-level multivariate analysis was performed to evaluate any confounding effects of gender and age.RESULTS Ninety-four participants were included in the final analysis(drop-out rate=11%).Comfort and speed from 940 runs and 978 injury data reports were analysed.Participants who ran with orthotics reported,on average,speeds 0.30 mph faster(P=0.20)and comfort scores 1.27 points higher(P≤0.001)than participants who ran with no orthotics.They were also 2.22 times less likely to sustain an injury(P=0.08)than participants who ran with no orthotics.However,findings were only significant for comfort and not for speed or injury rates.Age and gender were found to be significant predictors of comfort.However,the improvements in comfort reported by participants who ran with orthotics were still significant after adjusting for age and gender.CONCLUSION This study found orthotics to improve comfort and speed and prevent RRIs whilst running.However,these findings were only statistically significant for comfort.

Impact of Street Built Environment on Human Thermal Comfort in Summer

With the continuous intensification of the global greenhouse effect,thermal comfort has become a highly concerned issue in the living environment.The study explores the influencing factors and improvement strategies of urban street thermal comfort.The urban heat island effect,environmental parameters,building layout,and green planting all have a significant impact on the thermal comfort of streets.Improvement strategies include optimizing cultivating pattern of plants,adjusting street layout,and improving paving materials of road.The multi-layer vegetation structure provides green shade,reduces local temperature,and humidifies the surrounding environment.It should adjust the street orientation and aspect ratio to provide sunlight and ventilation,and reduce ambient temperature.Paving materials with low reflectivity and light color and permeable underlying surface should be chosen to reduce heat absorption,increase shading and greenery,and improve thermal comfort.

Comfortable Travel to Sichuan,the First Bend of the Yellow River

During the Yellow River Tourism Overseas Promotion Season 2023,Sichuan Province displayed the rich and vivid cultural and tourism image of the part of the Yellow River in Sichuan,specifically the cultural and tourism resources of 2 prefectures and 5 counties in Sichuan where the Yellow River flows,fully demonstrating the beautiful scenery of Sichuan.

人工环境中“舒适”的医学意义——关于舒适与健康的思考

当今社会,人工环境的营造日渐受到重视。室内环境不仅应满足舒适性的要求,更应考虑其动态变化对人体健康与免疫力的潜在影响。本文以人居环境营造为出发点,结合已有的文献研究与中西医观点,首先列举了外部环境对人体健康及体内环境的影响,其次介绍了“舒适”营造对提高机体健康水平的作用,最后从宏观上阐述了物理环境中“舒适”对人体健康的医学意义,为本专业同医学的交叉研究提供新思路。

A Modest But Comfortable Life

It’s been 10 days since I arrived in Eritrea,and during this time,I have been staying at the Midian Hotel in its capital,Asmara.Despite being a hotel,there was no water for shower,so I had to make do with sleeping fully clothed.During the stay of more than 10 days.

Evaluation of the Effect of Comfort Nursing on Patients with Chronic Obstructive Pulmonary Disease Complicated with Respiratory Failure

Objective:To explore and analyze the effect of comfort nursing in patients with chronic obstructive pulmonary disease(COPD)complicated with respiratory failure.Methods:60 patients with COPD and respiratory failure who were admitted to the Department of Respiratory Medicine of our hospital from May 2020 to May 2023 were selected as subjects of this study,and they were divided into comfort group and reference group by odd and even number draw method,with 30 cases in each group.The comfort group received comfort nursing,and the reference group received general nursing.The lung function performance and living conditions were compared between the groups.Results:Before the intervention,there was no statistically significant difference(P>0.05)in terms of lung functions such as forced expiratory volume in the first second(FEV1),forced vital capacity(FVC),and the ratio FEV1/FVC between the groups;after the intervention,the lung functions of the comfort group were significantly better than those in the reference group(P<0.05).Before the intervention,there was no statistically significant difference(P>0.05)between the groups in terms of mental state,physical function,social situation,and spiritual aspects;after the intervention,the mental state,physical function,social situation,and spiritual aspects of the comfort group were significantly better than those of the reference group(P<0.05).Conclusion:Comfort nursing care for COPD patients with respiratory failure can improve their lung function and quality of life,and achieve ideal nursing effects.

大功率拖拉机驾驶室振动仿真与试验验证

针对路面不平度引起的拖拉机振动及驾驶员驾驶疲劳等问题,以大功率拖拉机为研究对象,基于车辆动力学理论建立六自由度人-椅-路面拖拉机振动模型,仿真拖拉机动态工况下人椅系统的振动传递过程。为验证模型的准确性,在田间及沥青道路上进行实车试验,测量动态工况下拖拉机座椅及人体头部、腰部、腿部的振动加速度,并与模型仿真结果进行对比;通过加速度响应的时域和频域分析,把加权加速度均方根值作为评价指标,对驾驶员的振动舒适性进行评价分析。结果表明:建立的人椅系统模型与振动试验的结果有很高的一致性,模型具有良好的预测效果,且驾驶员测量部位因振动产生的不舒适感由低到高为头部、腿部、腰部,为拖拉机减振及座椅设计提供了参考。

The Effect of Comfort Nursing on the Compliance and Efficacy of Treatment for Children with Acute Otitis Media Caused by Upper Respiratory Tract Infection

Objective:To explore and analyze the clinical effect of comfort nursing on children with acute otitis media.Methods:62 children with acute otitis media caused by upper respiratory tract infection who visited the outpatient clinic of our hospital from June 2022 to June 2023 were selected for this study.They were divided into a study group(n=31)and a control group(n=31).Children in the control group received basic care,while children in the study group received comfort nursing along with basic care.The hearing thresholds,body temperature,treatment compliance,and nursing satisfaction of the two groups of children were compared.Results:After the nursing intervention,the hearing threshold and average body temperature of the children in the study group were lower than those in the control group(P<0.05);the treatment compliance of the children in the study group was higher than that in the control group(P<0.05);the nursing satisfaction of the study group was higher than that of the control group(P<0.05).Conclusion:Comfort nursing can improve the treatment effect,treatment compliance,and nursing satisfaction of children with children with acute otitis media caused by upper respiratory tract infection.

针对性气道护理对重症监护室患者舒适度与呼吸机相关性肺炎的影响

目的探讨针对性气道护理模式在重症监护室(ICU)患者中的应用效果。方法选择2021年1月—2022年12月医院120例ICU患者,按组间基线资料可比的原则将其分为对照组和观察组,每组60例。对照组予以常规护理,观察组采用针对性气道护理。观察两组患者护理干预前、护理干预5 d后的呼吸状况及舒适度,比较其康复进程、导管堵塞情况及呼吸机相关性肺炎(VAP)发生情况。结果观察组患者护理干预5 d后的PaO_(2)水平高于对照组,组间比较差异有统计学意义(P<0.05)。PaCO_(2)水平低于对照组,组间比较差异有统计学意义(P<0.05)。观察组患者护理干预5 d后的Kolcaba舒适状况量表(GCQ)评分高于对照组,差异有统计学意义(P<0.05)。观察组患者机械通气时间及ICU治疗时间分别为6.50±1.08 d和7.84±1.50 d,短于对照组的7.22±1.36 d和8.68±1.74 d,差异有统计学意义(P<0.05);观察组患者机械通气期间的导管堵塞程度较对照组轻,且VAP发生率低于对照组,差异均有统计学意义(P<0.05)。结论针对性气道护理模式可改善ICU患者呼吸状况及舒适度,缩短康复进程,并可减轻患者机械通气治疗期间导管堵塞程度,降低VAP发生率。