检索结果-南通市图书馆

Combustion Characteristics of Solid Refuse Fuels from Different Waste Sources

在线全文

学校读者我要写书评

暂无评论

Journal of Renewable Materials 2020年第7期8卷 789-799页

作者： jong Seong Chae seok Wan Kim Tae In Ohm Department of Civil and Environmental Engineering Hanbat National UniversityDaejeon34158Korea Department of Fire and Environmental Safety Daegu Haany UniversityDaegu38610Korea

In the production(as co-fuel or alone)of solid refuse fuel(SRF),knowledge about the characteristics of the raw materials is required for an ecofriendly and effective combustion *** are commonly produced by drying combustible waste and removing incombustible matter,resulting in a higher combustibility as compared to the original ***,the characteristics of SRFs may highly vary depending on where and from which materials they were ***,we investigated the characteristics of various SRFs using thermogravimetric analysis(TGA).As a TGA sample is commonly small,on the scale of milligrams,and,unlike homogeneous fuels,SRFs are heterogeneous,individual SRF samples analysed with this method may not represent the bulk material,and sample properties may vary significantly between ***,we further performed combustion experiments using a small-scale combustor and sample sizes from 1 to 10 *** optimise SRF combustor design and determine the SRF characteristics,proximate,elemental,heating value,TG,and differential thermogravimetric analyses were conducted,and weight losses and gas concentrations at different temperatures were measured upon *** lower heating values of the three analysed SRFs were 20,976,16,873,and 19,762 kJ/kg,and their Cl contents were 0.89,0.95,and 1.27 wt.%(legal criterion[Cl]<2.0 wt.%).TGA and small combustor experiments showed that complete weight loss was achieved below 500°***,CO was detected until 620°C.

关键词： Solid refuse fuel small-scale combustor thermogravimetric analysis waste gas concentration

Efficacy and cost analysis of transrectal ultrasound-guided prostate biopsy under monitored anesthesia

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2011年第5期13卷 724-727页

作者： Sung Gu kang Bum Sik Tae Sam Hong Min Young Hwii Ko seok Ho kang Jeong Gu Lee Je jong Kim Jun Cheon Department of Urology Korea University School of Medicine Korea University Robotic Urologic Surgery Center Korea University Hospital Seoul 136-705 Korea Department of Anesthesiology and Pain Medicine Korea University School of Medicine Korea University Robotic Urologic Surgery Center Korea University Hospital Seou 136-705 Korea

Sedation may result in reduction in pain during transrectal ultrasound （TRUS）-guided prostate biopsies. We aimed to evaluate the efficacy and safety of a combination of propofol and remifentanil infusion during TRUS-guided prostate biopsy and the related increases in health care costs. From January to September 2010, 100 men undergoing a transrectal prostate biopsy were randomized into two groups. In Group 1, 50 patients received a combined infusion of propofol and remifentanil; in Group 2, 50 patients received lidocaine jelly. After TRUS-guided biopsies were performed, pain and patient satisfaction were evaluated by a lO-point visual analog scale （VAS）, and a cost-related patient satisfaction questionnaire was completed by all patients. Patients were also asked whether they would be willing to undergo repeat biopsy by the same method. Patients in Group I showed a significantly lower VAS score than those in Group 2 （mean VAS score： 0.9± 1.1 versus 6.3±2.5; P〈0.001）. In addition, the patient satisfaction scale was significantly higher in Group 1 （P=0.002）. Although the overall cost was significantly higher in Group 1 （P=0.006）, patient satisfaction scales considering cost were also higher in this group （P=0.009）. A combination of propofol and remifentanil is a safe and effective way to decrease patient pain and increase patient satisfaction during TRUS-guided prostate biopsy. Although the costs were higher in the group that received sedation, as expected, the patients exhibited heightened satisfaction and willingness to repeat biopsies by the same method.

关键词： biopsy pain prostate sedation

Electrochemical characteristics of stainless steel using impressed current cathodic protection in seawater

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2009年第4期19卷 930-934页

作者： seok-Ki JANG Min-Su HAN Seong-jong KIM Division of Marine Engineering Mokpo Maritime University

Stainless steels such as STS 304,316 and 630 are frequently used as shaft materials in small fiber reinforced polymer(FRP) fishing *** the shaft material is exposed to a severely corrosive environment such as seawater,it should be protected using appropriate *** impressed current cathodic protection was used to inhibit corrosion in shaft *** anodic polarization,passivity was remarkably more evident in STS 316 stainless steel than in STS 304 and STS *** pitting potentials of STS 304,316,and 630 stainless steels were 0.30,0.323,and 0.260 V,*** concentration polarization due to oxygen reduction and activation polarization due to hydrogen generation were evident in the cathodic polarization trends of all three stainless *** 316 had the lowest current densities in all potential ranges,and STS 630 had the *** analysis showed that STS 316 was the most noble in the *** addition,the corrosion current density was the lowest for STS 316.

关键词：外加电流阴极保护 316不锈钢电化学特性海水腐蚀电流密度材料腐蚀阳极极化 STS

Surface characteristics of chemical conversion coating for Mg-Al alloy

在线全文

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2009年第4期19卷 892-897页

作者： Masazumi OKIDO Ryoichi ICHINO Seong-jong KIM seok-Ki JANG Nagoya University Division of Marine Engineering Mokpo Maritime University

The chemical conversion coating was formed on Mg alloy for low cost and harmlessness in environment by using the colloidal silica as the main *** film formed at 298 K was thick,which was thought to be the combination of Si and *** salt spray test,the ratio of black rust on the specimen that did not conducted chemical conversion treatment was five times or more than those of the chemical conversion treated *** film of chemical conversion coating produced by alkali treatment process was thinner than the specimen produced in basic chemical conversion treatment solution.

关键词：化学转化膜镁铝合金表面特性环境无害化盐雾试验涂膜厚度低成本硅溶胶

Mechanical and electrochemical characteristics evaluation in annealing treatment for ship material

在线全文

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2009年第B09期19卷 40-44页

作者： seok-Ki JANG Young-Jae JEONG Seong-jong KIM Division of Marine Engineering Mokpo Maritime University Jeonnam Techno Park

The effect of heat treatment on the electrochemical and mechanical properties of SS400 steel was investigated, and the effects of annealing conditions on notched specimens subjected to the slow strain rate test (SSRT) were studied. The results show that no correlations are observed among the maximum tensile strength, yield strength, and stress corrosion cracking. In contrast, the elongation and time-to-fracture are improved with stress-relieving annealing compared with the as-received condition. The elongation, time-to-fracture, and number of dimples increase with annealing heat treatment.

关键词：退火处理电化学船舶材料特性评价机械 SS400钢应力腐蚀开裂消除应力退火

Three-dimensional spongy nanographene-functionalized silicon anodes for lithium ion batteries with superior cycling stability

在线全文

学校读者我要写书评

暂无评论

Nano Research 2018年第1期11卷 233-245页

作者： Chunfei Zhang Tong-Hyun kang jong-Sung Yu Department of Energy Systems Engineering DGIST Daegu 42988 Republic of Korea

An innovative spongy nanographene （SG） shell for a silicon substrate was prepared by low-temperature chemical vapor deposition on a hierarchical nickel nanotemplate. The SG-functionalized silicon （Si@SG） composite shows outstanding properties, which may be helpful to overcome issues affecting current silicon anodes used in lithium ion batteries such as poor conductivity, large volume expansion and high mass transfer resistance. The hierarchical nanographene shell exhibits elastic, sponge-like features that allow it to self-adaptively change its volume to accommodate the volume expansion of silicon. In addition, the porous, spongy framework containing randomly stacked graphene nanosheets presents low diffusion barriers and provides sufficiently free and short-haul channel segments to allow the fast migration of Li and electrolyte ions. The unique properties of the present silicon anode result in excellent electrochemical performances in terms of long-term cycling stability （95% capacity retention after 510 cycles）, rate performance, and cycling behavior for high mass loadings at different current densities.

关键词： spongy nanographene core-shell silicon lithium ion battery three-dimensionalstructure

The biochemical efficacy of primary cryoablation combined with prolonged total androgen suppression compared with radiotherapy on high-risk prostate cancer： a 3-year pilot study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2010年第6期12卷 827-834页

作者： Young Hwii Ko seok Ho kang Young Je Park Hong seok Park Du Geon Moon Jeong Gu Lee Duck Ki Yoon Je jong Kim Jun Cheon Department of Urology MIS ＆ Robotic Urologic Surgery Centre Korea University School of Medicine Seoul 136-705Korea Department of Radiation Oncology Korea University School of Medicine Seoul 136-705 Korea

To gain beneficial effects in the management of high-risk prostate cancer, an integrated approach that combines local therapy and androgen deprivation therapy （ADT） was used. We compared biochemical responses between primary cryosurgical ablation of the prostate （CSAP） combined with prolonged ADT and radiation combined with ADT, which is the established modality in high-risk disease. A total of 33 high-risk patients received CSAP combined with ADT for 3 months before and up to 24 months after treatment. This patient group was matched with another 33 patients who had undergone three-dimensional conformal radiation therapy （3D-CRT） with the same protocol for ADT. Biochemical recurrence （BCR） was assessed by the American Society for Therapeutic Radiation Oncology （ASTRO） definition, the Phoenix definition and a prostate-specific antigen （PSA） cutoff of 0.5 ng mL^-1. Median follow-up was 61.0 ± 11.9 months for the CSAP ＋ ADT group and 86.0±15.8 months for the 3D-CRT ＋ ADT group. In the CSAP group, major complications including rectourethral fistula and incontinence were not noted. In the CSAP ＋ ADT group, 57.0% had BCR using the ASTRO definition, 21.2% using the Phoenix definition and 54.5% using a PSA cutoff of 0.5 ng mL^-1. In the 3D-CRT ＋ ADT group, 54.5%, 21.2% and 54.5% had BCR using the ASTRO, Phoenix and PSA definition, respectively. In the CSAP ＋ ADT group, the BCR-free survival （BRFS） was 54 ± 10 months using the ASTRO definition, 65 ± 5 months using the Phoenix definition and 51 ± 4 months using a PSA cutoff of 0.5 ng mL-1. In the 3D-CRT ＋ ADT group, the BRFS was 68 ± 12, 93 ± 19 and 70 ± 18 months using the ASTRO, Phoenix and PSA definition, respectively. By the log-rank test, the BRFS values for each group were not statistically different. This intermediate-term result indicated that primary CSAP combined with prolonged ADT offers a parallel biochemical response compared with radiotherapy in high-risk prostate cancer.

关键词： androgen ablation therapy cryoablation for the prostate radiotherapy

Atypical onset of bicalutamide-induced liver injury

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2016年第15期22卷 4062-4065页

作者： Gee Young Yun seok Hyun Kim seok Won Kim jong seok Joo Ju seok Kim Eaum seok Lee Byung seok Lee Sun Hyoung kang Hee seok Moon Jae Kyu Sung Heon Young Lee Kyung Hee Kim Department of Internal Medicine Chungnam National University School of Medicine Chungnam National University Hospital Departments of Pathology Chungnam National University School of Medicine Chungnam National University Hospital

Anti-androgen therapy is the leading treatment for advanced prostate cancer and is commonly used for neoadjuvant or adjuvant treatment. Bicalutamide is a non-steroidal anti-androgen, used during the initiation of androgen deprivation therapy along with a luteinizing hormone-releasing hormone agonist to reduce the symptoms of tumor-related flares in patients with advanced prostate cancer. As side effects, bicalutamide can cause fatigue, gynecomastia, and decreased libido through competitive androgen receptor blockade. Additionally, although not as common, drug-induced liver injury has also been reported. Herein, we report a case of hepatotoxicity secondary to bicalutamide use. Typically, bicalutamideinduced hepatotoxicity develops after a few days; however, in this case, hepatic injury occurred 5 mo after treatment initiation. Based on this rare case of delayed liver injury, we recommend careful monitoring of liver function throughout bicalutamide treatment for prostate cancer.

关键词： Bicalutamide Drug-induced liver injury Prostate neoplasm

Preparation of SnO Nanosheets and SnO_2 Fine Powders by Hydrazine Method

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

稀有金属材料与工程 2006年第A03期35卷 43-46页

作者： kang-Min Kim jong-Heun Lee Department of Materials Science & Engineering Korea UniversitySeoul 136-713Korea

SnO nanosheets and SnO_2 nanopowder were prepared by hydrazine (N_2H_4)-based chemical routes and their gas sensing characteristics were investigated.A SnCl_2-Hydrazine complex (Sn[ N_2H_4)_x]·yH_2O) was formed by a reaction between a SnCl_2 aqueous solution and N_2H_4·H_*** this complex was heat-treated at 450℃,SnO_2 nanopowders were prepared by the decomposition of the *** sensor fabricated from the SnO_2 nano powders showed a good recovery,fast response and high sensitivity for CO 50μg/g (R_a/R_g=1.87),C_2H_5OH 100μg/g (R_a/R_g=4.80),and acetone 100μg/g (R_a/R_g=1.50).SnO nano- sheets could be prepared when a NaOH solution was added to the solution containing the ***_2 nano sheets prepared by the oxidation of SnO nanosheets at 700℃in air atmosphere also showed a good sensitivity R_a/R_g=1.79) for CO 50μg/g at 400℃.The hydrazine method provided an effective tool to controlling the morphology and oxidation state of the tin oxide powders.

关键词： SnO2 SnO hydrazine method gas sensor nanosheets nanopowders