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厌氧-好氧移动床生物膜反应器串联处理垃圾渗滤液

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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

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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

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

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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

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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

Increasing concentrations of dietary threonine,tryptophan,and glycine improve growth performance and intestinal health with decreasing stress responses in broiler chickens raised under multiple stress conditions

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Animal Nutrition 2024年第3期18卷 145-153页

作者： Hyun Woo Kim jong Hyuk Kim Gi Ppeum Han Dong Yong Kil Department of Animal Science and Technology Chung-Ang UniversityAnseong-siGyeonggi-do 17546Republic of Korea Department of Animal Science Chungbuk National UniversityCheongju 28644Republic of Korea

The current study aimed to compare the effects of increasing concentrations of dietary threonine(Thr),tryptophan(Trp),and glycine(Gly)on growth performance,stress biomarkers,and intestinal function in broiler chickens under multiple stress *** hundred sixty broiler chickens at 21 d old were randomly allotted to 5 treatments with 8 *** in a positive control(PC)treatment were raised under low stock density(16.9 birds/m2 per cage)with recommended environmental conditions,whereas birds in 4 treatments were subjected to multiple stress conditions:a cyclic heat stress of 30±0.3°C for 10 h and 23±0.2°C for 14 h per day with high stock density(25.3 birds/m2 per cage).A basal diet was assigned to both PC and negative control(NC)*** additional diets were individually formulated to contain double concentrations of digestible Thr,Trp,or Gly+Ser compared with their concentrations in the basal *** experiment lasted for 14 *** showed that NC treatment had less growth performance(P<0.001),jejunal goblet cell counts(P=0.018),and trans-epithelial electrical resistance(TEER;P<0.001),but greater(P=0.026)feather corticosterone(CORT)concentrations than PC *** treatment showed the least(P<0.001)feed conversion ratio(FCR)among treatments under multiple stress ***,Trp,and Gly treatments had less(P=0.026)feather CORT concentrations,but had greater(P<0.001)TEER than NC *** conclusion,increasing concentrations of dietary Thr,Trp,or Gly improve the growth performance and intestinal health in broiler chickens with decreasing stress response under multiple stress conditions.

关键词： Broiler chicken Glycine Multiple stress Threonine Tryptophan

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

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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

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

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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

Development and Experimental Evaluation of Strip Shape Prediction Model for Sendzimir Rolling Mills

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Journal of Iron and Steel Research International 2013年第12期20卷 25-32页

作者： SHIN jong-min HAN Seong-ik KIM jong-shik School of Mechanical Engineering Pusan National University School of Electrical Engineering Pusan National University

It is difficult to obtain the desired strip shape using Sendzimir rolling mills because small diameter work rolls can be easily deformed by the roiling force. To control the strip shape effectively, it is important to understand the relationship between the behavior of the shape actuator and the variation of the strip shape. A numerical model based on the contact element method was proposed for the prediction of strip shape. In this numerical model, the re- lationships between the actuating forces, the roll deflections, the thickness profiles of the entry and exit sides, and the strip shape were considered. The proposed numerical model for strip shape prediction was evaluated by computer simulation and experiment with respect to various AS-U roll and first intermediate roll positions.

关键词： Sendzimir rollingmill double acting AS-U roll strip shape prediction model contact element method

A Power-Aware Branch Predictor by Accessing the BTB Selectively

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Journal of Computer Science & Technology 2005年第5期20卷 607-614页

作者： Cheol Hong Kim Sung Woo chung Chu shik Jhon Mobile System Laboratory Department of Electrical Engineering and Computer Science Seoul National University Seoul 151-742 Korea Department of Computer Science University of Virginia Charlottesville Virginia 22904 U.S.A.

Microarchitects should consider power consumption, together with accuracy, when designing a branch predictor, especially in embedded processors. This paper proposes a power-aware branch predictor, which is based on the gshare predictor, by accessing the BTB （Branch Target Buffer） selectively. To enable the selective access to the BTB, the PHT （Pattern History Table） in the proposed branch predictor is accessed one cycle earlier than the traditional PHT if the program is executed sequentially without branch instructions. As a side effect, two predictions from the PHT are obtained through one access to the PHT, resulting in more power savings. In the proposed branch predictor, if the previous instruction was not a branch and the prediction from the PHT is untaken, the BTB is not accessed to reduce power consumption. If the previous instruction was a branch, the BTB is always accessed, regardless of the prediction from the PHT, to prevent the additional delay/accuracy decrease. The proposed branch predictor reduces the power consumption with little hardware overhead, not incurring additional delay and never harming prediction accuracy. The simulation results show that the proposed branch predictor reduces the power consumption by 29-47%.

关键词： branch predictor BTB embedded processor low power design PHT