检索结果-南通市图书馆

厌氧-好氧移动床生物膜反应器串联处理垃圾渗滤液

在线全文

学校读者我要写书评

暂无评论

环境科学 2006年第10期27卷 2076-2080页

作者：陈胜孙德智陈桂霞 jong shik chung 哈尔滨工业大学市政环境工程学院哈尔滨150090

采用厌氧-好氧移动床生物膜反应器串联处理城市垃圾渗滤液．探讨了各种操作条件对垃圾渗滤液生物降解效率的影响，并对其影响机理作了分析．结果表明，水力停留时间和有机容积负荷对系统的处理效率影响较大，当系统进水的COD容积负荷在4... 详细信息

采用厌氧-好氧移动床生物膜反应器串联处理城市垃圾渗滤液．探讨了各种操作条件对垃圾渗滤液生物降解效率的影响，并对其影响机理作了分析．结果表明，水力停留时间和有机容积负荷对系统的处理效率影响较大，当系统进水的COD容积负荷在4．01～7．87kg／（m3·d）范围内，系统COD平均总去除率为94．2％，其中厌氧反应器对COD的去除率占总去除率的87．95％～92．76％；当系统进水的容积负荷高达10．23～16．14kg／（m^3·d）时，系统总COD平均去除率仍高达92．64％，其中厌氧反应器对COD的去除率占总去除率的79．05％～86．56％．当好氧段HRT大于1．25d，系统对氨氮的总去除率始终在97％以上．当HRT=0．75d时，系统对氨氮的总去除率仅在20％左右．该系统具有很强的抗冲击负荷能力，即使在24h内受到超过正常运行负荷4倍的冲击时，系统经过约3d可恢复正常．

关键词：移动床生物膜反应器垃圾渗滤液有机负荷冲击负荷

涂敷TiO2/Ti金属丝网电极的制备及其对活性黑5染料的电化学和光助电化学降解

在线全文

学校读者我要写书评

暂无评论

涂敷TiO2/Ti金属丝网电极的制备及其对活性黑5染料的电化学和光助...

Benefit in physical function and quality of life to nonsurgical treatment of varicose veins: Pilot study

第四届全国环境催化与环境材料学术会议

作者：姚杰尤宏 Kyung shik Yang jong shik chung 哈尔滨工业大学市政环境工程学院哈尔滨工业大学市政环境工程学院浦项工业大学化学工程系浦项工业大学化学工程系

在钛金属丝网上采用电泳沉积（EPD）方法沉积上约100μm厚的多孔钛层,加热烧结并通过煅烧处理在其表面上形成TiO2层。EPD后的金属丝网微观表征证明了发达的TiO2表面的存在。在三种不同的金属丝网电极上研究了活性黑5染料的电催化氧化降... 详细信息

在钛金属丝网上采用电泳沉积（EPD）方法沉积上约100μm厚的多孔钛层,加热烧结并通过煅烧处理在其表面上形成TiO2层。EPD后的金属丝网微观表征证明了发达的TiO2表面的存在。在三种不同的金属丝网电极上研究了活性黑5染料的电催化氧化降解过程和光辅助电化学催化降解过程的效率。三种电极分别为: H2气氛中800℃烧结10小时形成的钛涂金属丝网电极;H2气氛中800℃烧结10小时然后在空气中600℃下缎烧3小时形成的TiO2/Ti涂金属丝网电极;钛金属丝网电极．实验结果表明,以HCl为支持电解质,活性黑5 染料的脱色率在第一种和第二种电极上,20min高达85％。采用紫外光在TiO2/Ti金属丝网电极上研究了活性黑5染料的光助电化学催化降解．发现由H2气氛中800℃烧结10小时然后在空气中600℃下缎烧3小时形成的TiO2/Ti涂金属丝网电极构成的电化学体系中引入紫外辐射可加速活性黑5染料的脱色过程。在空气中600℃下缎烧3小时形成的TiO2在紫外辐射下光催化降解了活性黑5染料．对比单独应用电化学和光催化氧化过程可发现电化学体系中引入紫外辐射存在协同作用．

关键词：电泳沉积高级氧化活性黑5染料电化学氧化光催化

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2024年第3期12卷 517-524页

作者： Gwon-Min Kim BoKun Kim Minwoo Jang jong-Hwan Park Miju Bae chung Won Lee jong Won Kim Up Huh Medical Research Institute Pusan National University School of MedicineYangsan 50612South Korea Future Convergence Research Institute Changwon National UniversityChangwon 51140South Korea Department of Convergence Medical Science School of MedicinePusan National UniversityYangsan 50612South Korea Health Convergence Medicine Laboratory Biomedical Research InstitutePusan National University HospitalBusan 49241South Korea Department of Thoracic and Cardiovascular Surgery Pusan National University School of MedicineBiomedical Research InstitutePusan National University HospitalBusan 49241South Korea

BACKGROUND Studies on varicose veins have focused its effects on physical function;however,whether nonsurgical treatments alter muscle oxygenation or physical function remains ***,the differences in such functions between individuals with varicose veins and healthy individuals remain *** To investigate changes in physical function and the quality of life(QOL)following nonsurgical treatment of patients with varicose veins and determine the changes in their muscle oxygenation during *** We enrolled 37 participants(those with varicose veins,n=17;healthy individuals,n=20).We performed the following measurements pre-and post-nonsurgical treatment in the varicose vein patients and healthy individuals:Calf muscle oxygenation during the two-minute step test,open eyes one-leg stance,30 s sit-to-stand test,visual analog scale(VAS)for pain,Pittsburgh sleep quality index,physical activity assessment,and QOL *** Varicose veins patients and healthy individuals differ in most variables(physical function,sleep quality,and QOL).Varicose veins patients showed significant differences between pre-and post-nonsurgical treatment—results in the 30 sit-to-stand test[14.41(2.45)to 16.35(4.11),P=0.018],two-minute step test[162.29(25.98)to 170.65(23.80),P=0.037],VAS for pain[5.35(1.90)to 3.88(1.73),P=0.004],and QOL[39.34(19.98)to 26.69(17.02),P=0.005];however,no significant difference was observed for muscle *** Nonsurgical treatment improved lower extremity function and QOL in varicose veins patients,bringing their condition close to that of healthy *** studies should include patients with severe varicose veins requiring surgery to confirm our findings.

关键词： Varicose vein Nonsurgical treatment Physical function Quality of life Near infrared spectroscopy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

好氧生物流化床处理抗生素废水的试验研究

工业水处理 2005年第12期25卷 29-33页

作者：杜大恒陈胜孙德智 jong shik chung 哈尔滨工业大学市政环境工程学院黑龙江哈尔滨150090

采用以新型高分子材料为生物载体的生物流化床工艺处理高浓度的抗生素废水。试验结果表明,该载体挂膜容易,启动快,一个月后载体附着的生物量可达4136mg/L,在载体表观体积为反应器总体积的50%、进水COD容积负荷低于2.5kg/(m3·d)的情况下... 详细信息

采用以新型高分子材料为生物载体的生物流化床工艺处理高浓度的抗生素废水。试验结果表明,该载体挂膜容易,启动快,一个月后载体附着的生物量可达4136mg/L,在载体表观体积为反应器总体积的50%、进水COD容积负荷低于2.5kg/(m3·d)的情况下,COD去除率可达85%以上。该生物流化床对BOD5的去除率平均高达89.21%,与COD的去除率具有同步性。并研究了反应器中悬浮污泥浓度SS和总生物量MLSS在整个实验期间的动态变化,表明稳定运行时SS和总MLSS基本上稳定不变,当系统受到高负荷冲击时,SS降低,总MLSS升高,而且生物活性也大幅度提高,生物膜处在适应期,反应器抗冲击负荷能力增强。

关键词：生物流化床生物载体抗生素废水生物膜

Effectiveness of sensory integration therapy in children,focusing on Korean children:A systematic review and meta-analysis

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2024年第7期12卷 1260-1271页

作者： Seri Oh jong-Sik Jang A-Ra Jeon Geonwoo Kim Mihwa Kwon Bahoe Cho Narae Lee Department of Occupational Therapy Kangwon National University Graduate SchoolSamcheok 25949South Korea Department of Occupational Therapy Kangwon National UniversitySamcheok 25949South Korea Department of Occupational Therapy Ju-Ju Children Development CenterNonsansi 32985Chungcheongnam-doSouth Korea Department of Occupation Therapy Suwon Women’s UniversityGyeonggi-do 16632South Korea Hijam Center for Development of Children Ochang 28117South Korea Department of Occupational Therapy U1 UniversityChung-cheong bukdo 25949South Korea

BACKGROUND Sensory integration intervention is highly related to the child's effective interaction with the environment and the child's ***,various sensory integration interventions are being applied,but research methodological problems are arising due to unsystematic *** study aims to present the optimal intervention protocol by presenting scientific standards for sensory integration intervention through *** To prove the effectiveness of sensory integration therapy,examine the latest trend of sensory integration studies in Korea,and provide clinical evidence for sensory integration *** The database of Korean search engines,including RISS,KISS,and DBpia,was used to search for related literature published from 2001 to October *** keywords,“Children”,“Sensory integration”,“Integrated sensory”,“Sensorymotor”,and“Sensory stimulation”were used in this ***,a meta-analysis was conducted on 24 selected studiesRISS,KISS,and DBpia,was used to search for related literature published from 2001 to October *** keywords,“Children”,“Sensory integration”,“Integrated sensory”,“Sensorymotor”,and“Sensory stimulation”were used in this ***,a meta-analysis was conducted on 24 selected *** Sensory integration intervention has been proven effective in children with cerebral palsy,autism spectrum disorder,attention deficit/hyperactivity disorder,developmental disorder,and intellectual disability in relation to the diagnosis of *** sensory integration therapies,1:1 individual treatment with a therapist or a therapy session lasting for 40 min was most *** terms of dependent variables,sensory integration therapy effectively promoted social skills,adaptive behavior,sensory processing,and gross motor and fine motor *** The results of this study may be used as therapeutic evidence for sensory integration intervention in the clinical field of occupational therapy for

关键词： Children Meta-analysis Occupational therapy Sensory integration Sensory processing Social skills

VANET Jamming and Adversarial Attack Defense for Autonomous Vehicle Safety

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第5期71卷 3589-3605页

作者： Haeri Kim jong-Moon chung Department of Vehicle Convergence Engineering Yonsei UniversitySeoul03722Korea School of Electrical&Electronic Engineering Yonsei UniversitySeoul03722Korea

The development of Vehicular Ad-hoc Network(VANET)technology is helping Intelligent Transportation System(ITS)services to become a *** can use VANETs to communicate safety messages on the road(while driving)and can inform their location and share road condition information in ***,intentional and unintentional(e.g.,packet/frame collision)wireless signal jamming can occur,which will degrade the quality of communication over the channel,preventing the reception of safety messages,and thereby posing a safety hazard to the vehicle’s *** this paper,VANET jamming detection applying Support Vector Machine(SVM)machine learning technology is used to classify jamming and non-jamming *** analysis is based on two cases which include normal traffic and heavy traffic conditions,where the results show that the probability of packet dropping will increase when many vehicles are using the wireless channel *** using SVM classification,the most appropriate feature set applied in determining a jamming situation shows an accuracy of 98%or ***,more advanced jamming attacks need to be considered for preparation of more reliable and safer autonomous ITS *** research can use vehicular communication transmission and reception data based on selected published *** this paper,an additional adversarial defense algorithm using the Density-Based Spatial Clustering of Applications with Noise(DBSCAN)method is proposed,which assumes that evolutionary attacks of the jammer will attempt to confuse the trained *** simulation results show that applying DBSCAN can improve the accuracy by elimination of outliers before conducting classification testing.

关键词： Vehicle safety VANET jamming SVM adversarial defense

Kinetics study on photochemical oxidation of polyacrylamide by ozone combined with hydrogen peroxide and ultraviolet radiation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2006年第4期18卷 660-664页

作者： REN Guang-meng SUN De-zhi chung jong shik School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 China Department of Chemical Engineering Pohang University of Science and Technology Pohang 790-784 South Korea

An investigation on the process of ozone combined with hydrogen peroxide and ultraviolet radiation has been carried out in order to establish the kinetics for photochemical oxidation of polyacrylamide （PAM） in aqueous solution. Effects of operating parameters, including initial PAM concentration, dosages of ozone and hydrogen peroxide, UV radiation and pH value on the photochemical oxidation of PAM, have been studied. There was an increase in photochemical oxidation rate of PAM with increasing of dosages of 03, H2O2 and ultraviolet radiation. Upon increasing of the initial PAM concentration, the photochemical oxidation rate of PAM decreased. Slight effect of pH value on the photochemical oxidation rate of PAM was observed in the experiments. The kinetics equation for the photochemical oxidation of PAM by the system has been established.

关键词： photochemical oxidation polyacrylamide kinetics ozone/hydrogen peroxide/ultraviolet radiation

HARQ Optimization for PDCP Duplication-Based 5G URLLC Dual Connectivity

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第7期72卷 727-738页

作者： Changsung Lee Junsung Kim Jaewook Jung Jungsuk Baik jong-Moon chung Samsung Research Seoul06765Korea Samsung Electronics Suwon16677Korea School of Electrical and Electronic Engineering Yonsei UniversitySeoul03722Korea

Packet duplication(PD)with dual connectivity(DC)was newly introduced in the 5G New Radio(NR)specifications to meet the stringent ultra reliable low latency communication(URLLC)*** technology uses duplicated packets in the packet data convergence protocol(PDCP)layer that are transmitted via two different access nodes(ANs)to the user equipment(UE)in order to enhance the reliability ***,PD can result in unnecessary retransmissions in the lower layers since the hybrid automatic retransmission request(HARQ)operation is unaware of the transmission success achieved through the alternate DC link to the *** overcome this issue,in this paper,a novel duplication-aware retransmission optimization(DRO)scheme is proposed to reduce the resource usage induced by unnecessary HARQ *** proposed DRO scheme can minimize the average channel use while satisfying the URLLC *** proposed DRO scheme derives the optimal HARQ retransmission attempts for different ANs by solving a nonlinear integer programming(NLIP)*** performance of the proposed DRO scheme was evaluated using MATLAB simulation and is compared to the existing 5G HARQ support *** simulations results show that the proposed DRO scheme can provide a 14.71%and 15.11%reduced average channel use gain compared to the selective data duplication upon failure(SDUF)scheme and latency-aware dynamic multi-connectivity algorithm(LADMA)scheme,respectively,which are the existing 5G PD schemes that use HARQ.

关键词： 5G networks URLLC dual connectivity retransmission packet duplication

Anti-anger Effects of Herbal Medicine:A Mini-Review of Rat Studies

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Integrative Medicine 2022年第3期28卷 263-271页

作者： Chan-Young Kwon Hyo-Weon Suh jong Woo Kim Sun-Yong chung Department of Oriental Neuropsychiatry Dong-eui University College of Korean MedicineBusan(47227)Republic of Korea Department of Neuropsychiatry Kyung Hee University KoreanMedicine Hospital at Gangdong892 Dongnam-roGangdong-guSeoul(05278)Republic of Korea

Objective:To analyze the available data on the anti-anger effects of herbal medicines(HMs)as well as their underlying mechanisms in rat ***:From 6 electronic databases[PubMed,EMBASE,China National Knowledge Infrastructure(CNKI),Wanfang,Oriental Medicine Advanced Searching Integrated System(OASIS),and Research Information Sharing Service(RISS)],relevant animal experiments were searched by using"anger,""rats,"and"animal"as search *** last search was conducted on November 22,2019,and all experiments involving rat models of anger and treatment using HMs published until the date of the search were ***:A total of 24 studies with 16 kinds of HMs were *** studies have used the tail irritating method and"social isolation and resident intruder"method to establish anger *** to the included studies,the therapeutic mechanisms of HMs for anger regulation and important herbs by their frequency and/or preclinical evidence mainly incladed regulation of hemorheology(Bupleuri Radix,Paeoniae Radix Alba,and Glycyrrhizae Radix),regulation of sex hormones(Bupleuri Radix,Cyperi Rhizoma,and Paeoniae Radix Alba),regulation of neurotransmitters(Cyperi Rhizoma),regulation of anger-related genes(Bupleuri Radix,Glycyrrhizae Radix,and Paeoniae Radix Alba),and other ***,Liver(Gan)qi-smoothing herbs including Bupleuri Radix and Cyperi Rhizoma were the most frequently ***:This review found the frequent methods to establish an anger model,and major mechanisms of anti-anger effects of ***,some Liver qi-smoothing herbs have been frequently used to investigate the anti-anger effects of *** findings provide insight into the role and relevance of HMs in the field of anger management.

关键词： anger anger management therapy herbal medicine Korean traditional medicine