交互式数字叙事:加拿大Writing New Body Worlds阅读治疗新探索

文章基于相关研究文献与语料,对加拿大WNB阅读治疗实践进行梳理与归纳。WNB首次使用交互式数字叙事技术,构建面向公众的阅读治疗平台,以其交互式特征,融合了阅读和治疗引导两个过程,提供可访问的非临床方式,可面向大规模人群实现预防性健康干预。基于数据与计算的精准化阅读治疗是数字人文视角下的新变革,更具推广应用价值;以在线阅读平台建设为依托,推进实施平台化的阅读和治疗应成为未来发展方向之一;基于阅读形态与体验因技术赋能而改变的现状,图书馆应发挥引领作用,积极收集、创建或协助创建数字故事,推进阅读推广、服务与治疗的融合性发展,成为社区建设促进者、历史欣赏者和社区参与倡导者,也使阅读借助交互式数字叙事这一新载体,更好地发挥变革的力量,促进健康与幸福。

术前IDEAS模式访视在肺癌胸腔镜辅助小切口手术患者中的应用效果

目的 探讨术前IDEAS模式访视在肺癌胸腔镜辅助小切口手术(VAMT)患者中的应用效果。方法根据干预方式的不同将80例肺癌VAMT患者分为对照组(n=34)和IDEAS组(n=46),对照组患者给予常规术前访视,IDEAS组患者给予术前IDEAS模式访视。比较两组患者的生理指标[脉率(PR)、舒张压(DBP)、收缩压(SBP)]、疼痛程度[视觉模拟评分法(VAS)]、心理状态[汉密尔顿焦虑量表(HAMA)、汉密尔顿抑郁量表(HAMD)]、希望水平[Herth希望量表(HHI)]、满意度、住院时间及并发症发生情况。结果 干预后,两组患者PR、DBP、SBP均高于本组干预前,IDEAS组患者PR、DBP、SBP均低于对照组,差异均有统计学意义(P﹤0.05)。干预后,两组患者VAS、HAMD、HAMA评分均低于本组干预前,HHI量表各维度评分均高于本组干预前,IDEAS组患者VAS、HAMD、HAMA评分均低于对照组,HHI量表各维度评分均高于对照组,差异均有统计学意义(P﹤0.05)。IDEAS组患者的总满意率为100%,明显高于对照组患者的82.35%,住院时间明显短于对照组,差异均有统计学意义(P﹤0.01)。IDEAS组患者的并发症总发生率为4.35%,与对照组患者的11.76%比较,差异无统计学意义(P﹥0.05)。结论 术前IDEAS模式访视能有效改善肺癌VAMT患者的生理指标、心理状态和疼痛程度,提高希望水平,患者的满意度高。

内镜息肉冷圈套切除术联合IDEAS护理模式访视用于结直肠息肉切除患者的效果观察

目的探讨内镜息肉冷圈套切除术(CSP)结合识别问题-确定选项-评估并选择最佳选项-行动-检验有效性(IDEAS)护理模式访视应用于结直肠息肉患者的临床疗效,并分析对患者疼痛因子的影响,为提高该疾病的临床治疗效果提供依据。方法选取2021年1月至2023年1月南方医科大学南方医院增城院区收治的112例结直肠息肉患者进行前瞻性研究,根据不同的手术方式分为A组[56例,IDEAS护理模式访视+内镜息肉热圈套切除术(HSP)]和B组(56例,IDEAS护理模式访视+CSP),术后随访6个月。比较两组患者息肉切除情况,术前和术后3d的疼痛因子指标及血清血栓素B2(TXB2)、血管内皮生长因子(VEGF)、碱性成纤维细胞生长因子(bFGF)水平,以及息肉完整切除率和术后6个月并发症发生情况。结果B组患者手术时间短于A组;与术前比,术后3 d两组患者血清前列腺素E2(PGE2)、神经生长因子(NGF)、TXB2、VEGF、bFGF水平均升高,但B组均低于A组;血清P物质(SP)水平均降低,且B组低于A组(均P<0.05)。两组患者内镜操作时间、息肉切除时间、息肉直径、息肉切除数量、息肉完整切除率及术后6个月并发症总发生率比较,差异均无统计学意义(均P>0.05)。结论CSP结合IDEAS护理模式访视应用于结直肠息肉患者的治疗可显著缩短手术时间,患者术后疼痛较轻,有利于减轻机体炎症反应,促进疾病转归。

3D body解剖软件联合PACS系统在骨科临床实践教学中的应用

目的探讨3D body解剖软件结合医学影像存档与通信系统(PACS)在骨科临床实践教学中的应用效果。方法选择2023年1月至2023年12月在浙江大学医学院附属邵逸夫医院骨科轮转的60名实习生,按照随机数字表法分成实验组和对照组,每组30名。对照组采用传统线上结合线下的混合式教学方法,实验组采用3D body解剖软件联合PACS系统带教模式。在实习期结束时,对两组实习生进行闭卷理论考试与临床实践操作考核,并采用问卷调查方式评估实习生对课程的满意度。结果实验组实习生的理论考试与临床实践操作成绩均高于对照组,差异均有统计学意义(t分别=6.59、4.22,P均<0.05)。实验组实习生在学习兴趣、教学难度、专业能力以及医患沟通能力提升方面的满意度均高于对照组,差异均有统计学意义(χ^(2)分别=9.93、3.77、6.94、8.52,P均<0.05)。结论3D body解剖软件联合PACS系统带教模式运用到骨科实习生的临床教学中,能帮助实习生提高学习兴趣以及医患沟通能力,加强对骨科知识的掌握,降低知识的理解难度,对于提升临床医学教学质量具有重要意义。

基于IDEAS的多元化护理对溃疡性结肠炎患者生活质量及满意度的影响

目的探究基于IDEAS的多元化护理模式对溃疡性结肠炎患者生活质量及满意度的影响。方法方便选取2018年9月—2023年9月盐城市第三人民医院消化内科收治的84例溃疡性结肠炎患者作为研究对象,以随机数表法分为两组,对照组(42例)实行常规护理,观察组(42例)实行基于IDEAS的多元化护理模式。比较两组生活质量评分及护理满意度。结果观察组生活质量评分高于对照组,差异有统计学意义(P<0.05)。观察组护理总满意率远高于对照组,差异有统计学意义(P<0.05)。结论基于IDEAS的多元化护理模式对溃疡性结肠炎护理效果具有积极影响,利于提高患者生存质量与护理满意度。

Soft,body conformable electronics for thermoregulation enabled by kirigami

The application of thermoelectric devices(TEDs)for personalized thermoregulation is attractive for saving energy while balancing the quality of life.TEDs that directly attach to human skin remarkably minimized the energy wasted for cooling the entire environment.However,facing the extreme dynamic geometry change and strain of human skin,conventional TEDs cannot align with the contour of our bodies for the best thermoregulation effect.Hence,we designed a kirigami-based wearable TED with excellent water vapor permeability,flexibility,and conformability.Numerical analysis and experimental results reveal that our product can withstand various types of large mechanical deformation without circuit rupture.The stated outcome and proposed facile approach not only reinforce the development of wearable TEDs but also offer an innovative opportunity for different electronics that require high conformability.

Association of daily sitting time and leisure-time physical activity with body fat among U.S.adults

Background:Prolonged sitting and reduced physical activity lead to low energy expenditures.However,little is known about the joint impact of daily sitting time and physical activity on body fat distribution.We investigated the independent and joint associations of daily sitting time and physical activity with body fat among adults.Methods:This was a cross-sectional analysis of U.S.nationally representative data from the National Health and Nutrition Examination Survey2011-2018 among adults aged 20 years or older.Daily sitting time and leisure-time physical activity(LTPA)were self-reported using the Global Physical Activity Questionnaire.Body fat(total and trunk fat percentage)was determined via dual X-ray absorptiometry.Results:Among 10,808 adults,about 54.6%spent 6 h/day or more sitting;more than one-half reported no LTPA(inactive)or less than 150 min/week LTPA(insufficiently active)with only 43.3%reported 150 min/week or more LTPA(active)in the past week.After fully adjusting for sociodemographic data,lifestyle behaviors,and chronic conditions,prolonged sitting time and low levels of LTPA were associated with higher total and trunk fat percentages in both sexes.When stratifying by LTPA,the association between daily sitting time and body fat appeared to be stronger in those who were inactive/insuufficiently active.In the joint analyses,inactive/insuufficiently active adults who reported sitting more than 8 h/day had the highest total(female:3.99%(95%confidence interval(95%CI):3.09%-4.88%);male:3.79%(95%CI:2.75%-4.82%))and trunk body fat percentages(female:4.21%(95%CI:3.09%-5.32%);male:4.07%(95%CI:2.95%-5.19%))when compared with those who were active and sitting less than 4 h/day.Conclusion:Prolonged daily sitting time was associated with increased body fat among U.S.adults.The higher body fat associated with 6 h/day sitting may not be offset by achieving recommended levels of physical activity.

Stereotactic body radiotherapy in pancreatic adenocarcinoma

Background:Stereotactic body radiotherapy(SBRT)in pancreatic cancer allows high delivery of radiation doses on tumors without affecting surrounding tissue.This review aimed at the SBRT application in the treatment of pancreatic cancer.Data sources:We retrieved articles published in MEDLINE/PubMed from January 2017 to December 2022.Keywords used in the search included:“pancreatic adenocarcinoma”OR“pancreatic cancer”AND“stereotactic ablative radiotherapy(SABR)”OR“stereotactic body radiotherapy(SBRT)”OR“chemoradiotherapy(CRT)”.English language articles with information on technical characteristics,doses and fractionation,indications,recurrence patterns,local control and toxicities of SBRT in pancreatic tumors were included.All articles were assessed for validity and relevant content.Results:Optimal doses and fractionation have not yet been defined.However,SBRT could be the standard treatment in patients with pancreatic adenocarcinoma in addition to CRT.Furthermore,the combination of SBRT with chemotherapy may have additive or synergic effect on pancreatic adenocarcinoma.Conclusions:SBRT is an effective modality for patients with pancreatic cancer,supported by clinical practice guidelines as it has demonstrated good tolerance and good disease control.SBRT opens a possibility of improving outcomes for these patients,both in neoadjuvant treatment and with radical intent.

Body composition and metabolic syndrome in patients with type 1 diabetes

BACKGROUND In recent years,the prevalence of obesity and metabolic syndrome in type 1 diabetes(T1DM)patients has gradually increased.Insulin resistance in T1DM deserves attention.It is necessary to clarify the relationship between body composition,metabolic syndrome and insulin resistance in T1DM to guide clinical treatment and intervention.AIM To assess body composition(BC)in T1DM patients and evaluate the relationship between BC,metabolic syndrome(MS),and insulin resistance in these indi-viduals.METHODS A total of 101 subjects with T1DM,aged 10 years or older,and with a disease duration of over 1 year were included.Bioelectrical impedance analysis using the Tsinghua-Tongfang BC Analyzer BCA-1B was employed to measure various BC parameters.Clinical and laboratory data were collected,and insulin resistance was calculated using the estimated glucose disposal rate(eGDR).RESULTS MS was diagnosed in 16/101 patients(15.84%),overweight in 16/101 patients(15.84%),obesity in 4/101(3.96%),hypertension in 34/101(33.66%%)and dyslip-idemia in 16/101 patients(15.84%).Visceral fat index(VFI)and trunk fat mass were significantly and negatively correlated with eGDR(both P<0.001).Female patients exhibited higher body fat percentage and visceral fat ratio compared to male patients.Binary logistic regression analysis revealed that significant factors for MS included eGDR[P=0.017,odds ratio(OR)=0.109],VFI(P=0.030,OR=3.529),and a family history of diabetes(P=0.004,OR=0.228).Significant factors for hypertension included eGDR(P<0.001,OR=0.488)and skeletal muscle mass(P=0.003,OR=1.111).Significant factors for dyslipidemia included trunk fat mass(P=0.033,OR=1.202)and eGDR(P=0.037,OR=0.708).CONCLUSION Visceral fat was found to be a superior predictor of MS compared to conventional measures such as body mass index and waist-to-hip ratio in Chinese individuals with T1DM.BC analysis,specifically identifying visceral fat(trunk fat),may play an important role in identifying the increased risk of MS in non-obese patients with T1DM.

基于IDEAS访视模式对腹腔镜下全子宫切除术患者生理、心理应激反应及应对方式的影响

目的:探讨基于IDEAS访视模式对腹腔镜下全子宫切除术患者生理、心理应激反应及应对方式的影响。方法:选取2021年1月—2022年12月于肇庆市第一人民医院拟行腹腔镜下全子宫切除术的患者60例作为研究对象,以随机数字表法分为对照组(实施常规术前访视)和观察组(实施基于IDEAS的访视模式),各30例。比较两组患者生理应激指标、心理应激水平、应对方式及护理满意度。结果:访视后,两组脉率、舒张压、收缩压水平高于访视前,观察组脉率、舒张压、收缩压水平低于对照组,差异有统计学意义(P<0.05);访视后,两组面对评分高于访视前,焦虑自评量表、抑郁自评量表评分及回避、屈服评分低于访视前,观察组优于对照组,差异有统计学意义(P<0.05);观察组护理满意度高于对照组,差异有统计学意义(P=0.0022)。结论:应用基于IDEAS访视模式于腹腔镜下全子宫切除术患者中的临床效果显著,有利于缓解患者的生理、心理应激反应,改善患者的应对方式,提高护理满意度。

The Relevance of Michel Serres’s Idea of Bodily Hominescence for a Convergence of Posthumanism and Transhumanism: A Trans/Posthuman Body

Faced with the challenge of arguments about the relation of post-,and trans-humanism,putting forth questions on their“antagonism”,or“convergence”,I propose to(re-)evaluate/highlight the relevance of the thinking of Michel Serres for posthuman debates.It specifically seems to me that Serresian idea of bodily hominescence can be read as a suggestion of“convergence”of post-and trans-humanism.Starting from the assumption that the body is a crucial node of both of them in that its consideration by one and the other marks a major front of their divergence(tool body according to transhumanism,dimensional body according to posthumanism),I seem to grasp,within the Serresian theme of the hominescent body as totipotent/virtual,the idea of bodily virtuality as a point of their convergence.Following Serres’s argument that,due to its virtuality/potentiality(intended as the totality of the possibilities),the body,though always involved in(technological)hybridization processes,is difficult to be artificially reproduced and to be reduced to information,I assume virtuality as an“operational concept”capable of“producing”convergence of post-and trans-humanism.Such a concept allows me,in fact,to read the body(re-)invested,by technology as an infiltrative agent,of a dimensional role as hybridizer(and in this sense normalized).Through virtuality,therefore,I think to be able to understand the body as a meeting ground between trans-and post-component,in the sense that technological“intervention”no longer constitutes an enhancement of the body,but a hybridizing event not implying dis-incarnation but rather normalization of body’s dimensional value;precisely such,due eminently to hybridization with otherness within a process of technological infiltration.The body normalized by such a technology is therefore a trans-posthuman body,in the sense of being contaminated by technological processes keeping it in its dimensionality.In order to better illustrate this idea,I propose to examine Serresian metaphor of the body as a trunk without branches with cultural cut twigs,which seems to me to effectively express the theme of the body as a ground/condition of hybridization,i.e.,as an anthropo-techno-poietic dimension.I aim so at showing the relevance of Serres’s thought to conceive,in a convergent perspective,a body,not to be strengthened,but to be normalized in its dimensionality,namely,a trans/posthuman body in a trans/posthumanist context.

3D Body解剖软件结合CBL教学法在骨科实习生临床带教中的应用

目的:探讨3D body解剖软件结合CBL教学法在骨科实习生临床带教中的应用效果。方法:随机选取2022年1月~2023年12月在我科室实习的36名骨科实习生为研究对象,随机分为观察组和对照组,对照组采用CBL教学模式,观察组在对照组的教学模式上运用3D body解剖软件。教学结束后,比较两组学生的理论知识考试成绩,PPT汇报成绩以及教学满意度。结果:观察组学生理论知识考核成绩、PPT汇报成绩、教学满意度明显高于对照组,差异具有显著性(P < 0.05)。结论:3D body解剖软件结合CBL教学法应用于骨科实习生临床带教,可以有效提高学生成绩,调动学生积极性及自主学习能力,提升教学满意度。

基于IDEAS模式的术前访视联合共情支持对严重烧伤患者生理应激、应对方式和瘢痕恢复的影响

目的:基于IDEAS模式(即识别问题、确认选项、评估并选择最佳选项、行动和检验有效性)的术前访视联合共情支持对严重烧伤患者生理应激、应对方式和瘢痕恢复的影响。方法:选取2021年2月-2023年2月笔者科室收治的90例严重烧伤患者为研究对象,按照随机数字表法分为观察组和对照组,各45例。对照组给予共情支持,观察组给予基于IDEAS模式的术前访视护理联合共情支持,比较两组生理应激[去甲肾上腺素(Norepinephrine,NE)、血管紧张素Ⅱ(Angiotensin Ⅱ,AngⅡ)水平]、心理状况[采用汉密尔顿焦虑量表(Hamilton anxiety scale,HAMA)和汉密尔顿抑郁量表(Hamilton depression scale,HAMD)评估]、应对方式[采用医学应对问卷(Medical coping modes questionnaire,MCMQ)评估]、自理能力[采用自我护理能力量表(Exercise of self-care agency scale,ESCA)]和瘢痕恢复情况[采用温哥华瘢痕量表(Vancouver scar scale,VSS)评估]。结果:干预后,观察组血清NE、AngⅡ水平低于对照组,HAMA、HAMD评分低于对照组,MCMQ评分优于对照组,ESCA各维度评分高于对照组,VSS评分及总分低于对照组,差异均有统计学意义(P<0.05)。结论:基于IDEAS模式的术前访视联合共情支持可有效减轻严重烧伤患者生理应激,改善不良心理和应对方式,提高自我护理能力,进而促进瘢痕快速恢复。

0.05 T MRI for whole body

Recently,a study on a 0.05 T,low-cost,low-power,and computing-driven shielding-free ultra-low-field(ULF)magnetic resonance imaging(MRI)scannerwas published.This work enhances the image quality of MRI and reduces the scanning time based on deep learning methods,which is of great significance to enhancing the popularization and availability of MRI[1](https://www.science.org/doi/abs/10.1126/science.adm7168).

Longitudinal changes in body weight of breastfeeding mothers in the first year after delivery and its relationship with human milk composition:a combined longitudinal and cross-sectional cohort study

Objective:Postpartum weight retention(PPWR)is a common problem among women after childbirth.The main objectives of this study are to understand the changes in body weight of breastfeeding mothers during long-term follow-up and preliminarily explore the relationship between maternal body weight and human milk composition,including macronutrients,leptin,and adiponectin.Methods:The study included a longitudinal cohort(122 mothers),and a cross-sectional cohort(37 mothers).The human milk,maternal weight,and dietary surveys were collected in the longitudinal cohort at different follow-up time points(1-14 days postpartum,2-4 months postpartum,5-7 months postpartum,and 12-17 months postpartum).The maternal body weight was analyzed using the responses in the survey questionnaires.A milk analyzer based on the mid-infrared spectroscopy(MIRS)was used to determine milk composition,and nutrition analysis software evaluated dietary intakes.In the cross-sectional cohort,participating mothers were asked to provide blood and human milk samples and pertinent information related to maternal body composition.Maternal body composition was measured by bioelectrical impedance analysis(BIA),while ELISA analyzed leptin and adiponectin in milk and serum.Results:At 5-7 months postpartum,the PPWR of breastfeeding mothers was(2.46±3.59)kg.At 12-17 months postpartum,the PPWR was(0.98±4.06)kg.PPWR was found to be negatively correlated with milk fat content within 14 days postpartum and positively correlated at 2-4 months postpartum.In addition,the maternal weight and body muscle mass were positively correlated with leptin and adiponectin in milk.Plasma leptin was positively correlated with the mother’s body weight,body mass index(BMI),FAT percentage,and body fat mass,while plasma adiponectin did not correlate with any parameter.The results also indicate that the PPWR did not correlate with leptin and adiponectin in plasma or milk.Conclusions:Breastfeeding mothers may retain considerable weight gain one year after delivery.Human milk composition may be related to changes in maternal body weight.Leptin and adiponectin in breast milk and leptin in plasma are associated with the maternal body composition.This study supports the notion that maternal nutritional status may affect offspring health through lactation,and future research should focus on exploring weight management of postpartum mothers.

The Impact of Social Media on Dietary Behaviors and Body Image of College Students: A Qualitative Approach

Background: The use of social media platforms for health and nutrition information has become popular among college students. Although social media made information readily accessible in different formats, nutritional misinformation promoted by influencers and non-experts caused negative impact on diet behavior and perception of body image. Previous research indicated that extensive use of social media was positively linked to disordered eating behaviors. Social media platforms like Facebook and Instagram that allow users to follow celebrities intensified exposure to influencers’ messages and images and resulted in negative moods and body dissatisfaction. Objective: This paper aims to explore the impact of social media on college students’ dietary behaviors and body image. Participants: 18 undergraduate students from a public university in the Southern United States were recruited through a mass email. Methods: A cross-sectional qualitative study of three focus groups was conducted. The focus groups were based on guiding open-ended questions. Atlas.ti was used to code and analyze the data using inductive and deductive codes. Results: Three main themes were identified. The conditions theme included elements that explain why and how social media influences the participants’ actions. The actions theme included eating behavior, physical activity, and dietary supplement intake. The consequences theme describes anticipated or actual outcomes of actions such as body image and ideal weight. Conclusions: Social media has had a negative influence on diet behaviors and a positive influence on physical activity. Evidence-based nutrition and weight management information is needed to thwart potential misinformation.

网络关系视角下的用户创新生存影响因素分析——以LEGO Ideas为例

以LEGO Ideas作为数据来源,在社交网络平台的相关研究基础上,构建出作者网络和内容网络,并计算出用户创新节点在网络中的中心性。采用生存分析法,将用户创新的“存活”视为生存事件,建立生存回归模型,分阶段计算出网络中心性对用户创新生存的影响系数。研究认为,两类网络属性在用户创新发布早期为其生存提供正向影响,作者网络的影响在后期愈发明显,而内容网络则逐渐出现负向影响的迹象。企业应鼓励OI平台中高质量作者间的互动,更多地根据作者行为识别出高质量的用户创新。

Growth Performance of Crocodile Fed with Chicken Intestine and Trash Fish at Smallholder Farm in Siem Reap Province,Cambodia

The experiment was conducted at the smallholder crocodile farm at Pouk district,Siem reap province,and lasted 12 months,commenced from January 1st to December 31st,2023.The CRBD(Completely Randomized Block Design),was used in 3 treatments,such as T1(fed chicken intestine only),T2(fed chicken intestine+trash fish)and T3(fed trash fish only),with 4 replications in each treatment.The block was set by gender of crocodile,male and female.The 36 of local breed crocodiles 4 months old were allocated into each replication randomly.The result found that the length of crocodile gradually increased in the first semester,then it greatly increased from or for second semester for all treatments.In addition,the final body length of crocodile was significant different among treatments(p<0.001),the treatment of T2(fed chicken intestine+trash fish)had the longest one.Body length was also affected by gender,and male crocodile had longer body length(p<0.001).However,there were no significant differences for the interaction between types of feed with gender(p>0.05)(Table 1).The body weight of crocodile had gradually increased in the first semester,then it greatly increased from or for second semester for all treatments,while the final body weight of crocodile was also significant different among treatments(p<0.001)and the gender of crocodile(p<0.001).The average ADG(Daily Weight Gain)was significant different among treatments(p<0.001).Treatment of T2(fed chicken intestine+trash fish)had highest ADG,11.05 g,followed by T3(fed trash fish only),while the T1 had the lowest one.The gender of crocodile affected the ADG of crocodile,and male crocodile had higher ADG than female crocodile(p<0.001).However,there were no significant differences for the interaction between type of feed with gender(p>0.05).Feed intake was calculated based on amount of feed offer and measured in fresh basis.The amount of intake feed in all treatments was the same.FCR(Feed Conversion Ratio)was significant different among treatments(p<0.001)and also gender of crocodile(p<0.001).However,there were no significant differences for the interaction between types of feed with gender(p>0.05).In conclusion,the uses of trash fish and chicken intestine are an alternative feed source for crocodile to result in higher growth performance of crocodile.

Energy Harvesting in the Wake of An Inverted C-Shaped Bluff Body

This paper proposes a novel wake-induced vibration(WIV)-based energy harvesting system consisting of two bluff bodies.An inverted C-shaped bluff body is stationary installed at the upstream position to generate an interference wake street,and a cylinder bluff body equipped with a transducer is elastically suspended at the downstream position to harness WIV energy.The hydrodynamics and energy harvesting(EH)performance of the proposed system are investigated via experimental studies.The reduced velocity(U*)ranging from 2 to 14(the corresponding Reynolds number ranging from 15100 to 106200)is considered in the present study.It is found that the wake generated by the inverted C-shaped bluff body significantly affects the EH performance.Enlarging the opening angle(α)of the C-shaped bluff body increases the vibration amplitude of the downstream cylinder,thereby increasing the harvested power.When the spacing(L)between two bluff bodies is two times the cylinder diameter(D),the wake-induced vibration(WIV)mode is observed,while the combined WIV and wake galloping(WG)mode occurs whenαis 150°,and L equals 3D or 4D.The average drag coefficient becomes negative when L is 2D,3D,or 4D.By carefully configuring a C-shaped bluff body,the wake generated by it can bring an augmenting effect on the vibration of the downstream EH cylinder.For example,the RMS power output of the proposed EH system reaches a maximum of 0.31 W at U*=8 and L=4D,which is 300%greater than that of its traditional counterpart.Furthermore,after a number of case stud-ies,it is identified that the proposed EH system can achieve the best performance whenαis 150°and L=2D.

Ecological Remediation Technology of Urban Landscape Water Body

Urban landscape water body is not only an important part of urban landscape construction,but also an important way to maintain landscape diversity and biodiversity,carrying the beautiful yearning of urban residents for natural life.A good state of urban landscape water body is crucial to the ecological environment of the city.However,due to the poor kinetic energy of urban landscape water body and the influence of various human factors,the quality of urban landscape water body often declines,and urban population is threatened by water security problems.Through the study of several water body ecological remediation technologies,relevant suggestions are put forward,in order to provide a reference for water pollution restoration and treatment in urban human settlement environment.