检索结果-南通市图书馆

Validation of Sea Level Data in the East Asian Marginal Seas: Comparison between TOPEX/POSEIDON Altimeter and In-Situ Tide Gauges

引用

Advances in Atmospheric Sciences 2003年第4期20卷 650-660页

作者： Yong-hoon YOUN Im Sang OH ki-Hyun kiM Young-Hyang PARK Jong Woo kiM Meteorological Research Institute/Korea Meteorological Administration SeoulKoreaResearch Institute of OceanographySeoul National UniversitySeoulKoreaDepartment of Earth SciencesSejing UniversitySeoulKoreaLaboratoire d'Oceanographie PhysiqueMuseum National d'Histoire NaturelleParisDepartment of Earth SciencesSejong UniversitySeoulKorea

In an effort to assess the reliability of satellite altimeter systems, the authors conduct a comparative analysis of sea level data that were collected from the TOPEX/POSEIDON (T/P) altimeter and 10 tide gauges (TG) near the satellite passing ground tracks. The analysis is made using datasets collected from marginal sea regions surrounding the Korean Peninsula at T/P cycles of 2 to 230, which correspond to October 1992 to December 1998. Proper treatment of tidal errors is a very critical step in data processing because the study area has very strong tide. When the T/P data are processed, the procedures of Park and Gamberoni (1995) are adapted to reduce errors associated with the tide. When the T/P data are processed in this way, the alias periods of M2, S2, and K1 constituents are found to be 62.1, 58.7, and 173 days repectively. The compatibility of the T/P and TG datasets are examined at various filtering periods. The results indicate that the low-frequency signals of the T/P data can be interpreted more safely with longer filtering periods (such as up to the maximum selected value of 200 days). When RMS errors for the 200-day low-pass filter period are compared with all 10 tidal stations, the values span the range of 2.8 to 6.7 cm. The results of a correlation analysis for this filtering period also show a strong agreement between the T/P and TG datasets across all stations investigated (e.g.,p- values consistently less than 0.001). Hence according to the analysis, the conclusion is made that the analysis of surface sea level using satellite altimeter data can be made safely with reasonably extended filtering periods such as 200 days.

关键词： sea level TOPEX/POSEIDON altimeter tide gauge

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Osteoporosis and bone fractures in alcoholic liver disease:A meta-analysis

引用

World Journal of Gastroenterology 2015年第13期21卷 4038-4047页

作者： Chang Seok Bang In Soo Shin sung Wha Lee Jin Bong kim Gwang Ho Baik ki Tae Suk Jai hoon Yoon Yeon Soo kim Dong Joon kim Department of Internal Medicine Hallym University College of MedicineChuncheon 200-704South Korea College of Education Jeonju UniversityJeonju 560-759South Korea

AIM: To evaluate the association between alcoholic liver disease(ALD) and bone fractures or osteoporosis. METHODS: Non-randomized studies were identified from databases(Pub Med, EMBASE, and the Cochrane Library). The search was conducted using Boolean operators and keywords, which included "alcoholic liver diseases", "osteoporosis", or "bone fractures". The prevalence of any fractures or osteoporosis, and bone mineral density(BMD) were extracted and analyzed using risk ratios and standardized mean difference(SMD). A random effects model was applied. RESULTS: In total, 15 studies were identified and analyzed. Overall, ALD demonstrated a RR of 1.944(95%CI: 1.354-2.791) for the development of bone fractures. However, ALD showed a RR of 0.849(95%CI: 0.523-1.380) for the development of osteoporosis. BMD was not significantly different between the ALD and control groups, although there was a trend toward lower BMD in patients with ALD(SMD in femur-BMD:-0.172, 95%CI:-0.453-0.110; SMD in spine-BMD:-0.169, 95%CI:-0.476-0.138). Sensitivity analyses showed consistent results. CONCLUSION: Current publications indicate significant associations between bone fractures and ALD, independent of BMD or the presence of osteoporosis.

关键词： Alcoholic liver diseases Bone fractures Osteoporos

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Novel ternary metals-based telluride electrocatalyst with synergistic effects of high valence non-3d metal and oxophilic Te for pH-universal hydrogen evolution reaction

引用

Journal of Energy Chemistry 2023年第5期80卷 736-743,I0015页

作者： Seunghwan Jo Wenxiang Liu Yanan Yue ki hoon Shin Keon Beom Lee Hyeonggeun Choi Bo Hou Jung Inn Sohn Division of Physics and Semiconductor Science Dongguk UniversitySeoul 04620Republic of Korea School of Power and Mechanical Engineering Wuhan UniversityWuhan 430072HubeiChina School of Physics and Astronomy Cardiff UniversityCardiff CF243AAWalesUK

Electrocatalyst designs based on oxophilic foreign atoms are considered a promising approach for developing efficient pH-universal hydrogen evolution reaction(HER)electrocatalysts by overcoming the sluggish alkaline HER ***,we design ternary transition metals-based nickel telluride(Mo WNi Te)catalysts consisting of high valence non-3d Mo and W metals and oxophilic Te as a first demonstration of non-precious heterogeneous electrocatalysts following the bifunctional *** Mo WNi Te showed excellent HER catalytic performance with overpotentials of 72,125,and 182 mV to reach the current densities of 10,100,and 1000 mA cm^(-2),respectively,and the corresponding Tafel slope of 47,52,and 58 mV dec-1in alkaline media,which is much superior to commercial Pt/***,the HER performance of Mo WNi Te is well maintained up to 3000 h at the current density of 100 mA cm^(-2).It is further demonstrated that the Mo WNi Te exhibits remarkable HER activities with an overpotential of 45 mV(31 mV)and Tafel slope of 60 mV dec-1(34 mV dec-1)at 10 mA cm^(-2)in neutral(acid)*** superior HER performance of Mo WNi Te is attributed to the electronic structure modulation,inducing highly active low valence states by the incorporation of high valence non-3d transition *** is also attributed to the oxophilic effect of Te,accelerating water dissociation kinetics through a bifunctional catalytic mechanism in alkaline *** functional theory calculations further reveal that such synergistic effects lead to reduced free energy for an efficient water dissociation process,resulting in remarkable HER catalytic performances within universal pH environments.

关键词： Telluride catalyst Oxophilic effect High valence non-3d metal Bifunctional mechanism pH-universal hydrogen evolution reaction

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Characterization of focal hypermetabolic thyroid incidentaloma: An analysis with F-18 fluorodeoxyglucose positron emission tomography/computed tomography parameters

引用

World Journal of Clinical Cases 2022年第1期10卷 155-165页

作者： Haejun Lee Yoo Seung Chung Joon-Hyop Lee ki-Young Lee Kyung-hoon Hwang Department of Nuclear Medicine Gachon University College of MedicineGil Medical CenterIncheon 21565South Korea Department of Endocrine Surgery Gachon University College of MedicineGil Medical CenterIncheon 21565South Korea Department of Endocrinology and Metabolism Gachon University College of MedicineGil Medical CenterIncheon 21565South Korea

BACKGROUND Incidentally found thyroid tumor(thyroid incidentaloma,TI)on F-18 fluorodeoxyglucose(FDG)positron emission tomography-computed tomography(PETCT)is reported in 2.5%-5%of patients being investigated for non-thyroid *** to 50%of these cases have been diagnosed to be malignant by cytological/histological ***(US)and fine-needle aspiration cytology are recommended for thyroid nodules with high FDG uptake(hypermetabolism)that are 1 cm or greater in *** is important to accurately determine whether a suspicious hypermetabolic TI is malignant or *** To distinguish malignant hypermetabolic TIs from benign disease by analyzing F-18 FDG PET-CT parameters and to identify a cut-off *** Totally,12761 images of patients who underwent F-18 FDG PET-CT for nonthyroid purposes at our hospital between January 2016 and December 2020 were retrospectively reviewed,and 339 patients[185 men(mean age:68±11.2)and 154 women(mean age:63±15.0)]were found to have abnormal,either focal or diffuse,thyroid FDG *** a thorough review of their medical records,US,and cytological/histological reports,46 eligible patients with focal hypermetabolic TI were included in this *** TIs were categorized as malignant and benign according to the cytological/histological reports,and four PET parameters[standardized uptake value(SUV)max,SUV_(peak),SUV_(mean),and metabolic tumor volume(MTV)]were measured on FDG *** lesion glycolysis(TLG)was calculated by multiplying the SUV_(mean) by *** parametric and non-parametric methods were used to compare the five parameters between malignant and benign *** operating characteristic(ROC)curve analysis was performed to identify a cut-off *** Each of the 46 patients[12 men(26.1%;mean age:62±13.1 years)and 34 women(73.9%;mean age:60±12.0 years)]with focal hypermetabolic TIs had one focal hypermetabolic *** them,26(56.5%)were malignant and 20(43.5%)were ***_(max

关键词： Thyroid incidentaloma Malignancy Fluorodeoxyglucose positron emission tomography/computed tomography Standardized uptake value Cut-off

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effect of tamsulosin on ejaculatory function in BPH/LUTS

引用

Asian Journal of Andrology 2011年第6期13卷 846-850页

作者： Sang hoon Song Hwancheol Son Kwang Taek kim Sae Woong kim Du Geon Moon ki Hak Moon Kwangsung Park Jong Kwan Park sung-Won Lee Jae Seog Hyun Nam Cheol Park Jeungpyung Health Center Jeungpyung-gun Chungbuk 368-900 Korea Department of Urology Seoul Metropolitan Boramae Hospital Seoul 156-707 Korea Aerospace Medical Center Cheongwon Chungbuk 363-840 Korea Catholic University of Korea College of Medicine Seoul 137-701 Korea Korea University College of Medicine Seoul 152-703 Korea Department of Urology Yeungnam University College of Medicine Daegu 705-717 Korea Department of Urology Chonnam National University Medical School Gwangju 501-757 Korea Department of Urology Medical School and Institute for Medical Sciences Chonbuk National University Chonbuk 561-712 Korea Research Institute of Clinical Medicine and CTC for Medical Device of Chonbuk National University Hospital Chonbuk 561-712 Korea Samsung Medical Center Sungkyunkwan University School of Medicine Seoul 135-710 Korea Gyeongsang National University Gyeongnam 660-702 Korea pusan National University College of Medicine Pusan 602-739 Korea

This study was undertaken to determine the impact on ejaculatory function of tamsulosin （0.2 mg） given once daily （OD） for 12 weeks and to identify risk factors for ejaculatory dysfunction in patients undergoing this treatment. Males with an International Prostatic Symptom Score （IPSS） ≥ 8 were enrolled in this study. All participants completed questionnaires, including the IPSS and the Male Sexual Health Questionnaire （MSHQ）, and serum prostate-specific antigen, transrectal ultrasound and uroflowmetry with post-void residual were measured. After initiating 0.2 mg OD tamsulosin, patients were re-evaluated on the fourth and twelfth weeks of medication. The chi-squared test, the independent t-test and one-way ANOVA were used to compare means. Binary logistic regression analysis was used to calculate the odds ratio for all risk factors. A total of 177 men constituted the study cohort. No significant difference was observed between baseline and follow-up for the erectile function, ejaculatory function, satisfaction, sexual activity and desire domains （EFD, EjFD, SDA and ADD） or for erectile or ejaculatory bother mean scores. After 12 weeks, the overall incidence of ejaculatory dysfunction （EjD） was 13.4%. Incidences of the seven different types of EjD （decreased frequency, delay, dryness, decreased strength/force, decreased volume, decreased pleasure and pain at ejaculation） were 2.4%, 3.1%, 3.9%, 3.9%, 6.3%, 7.1% and 3.1%, respectively. Baseline EjFD scores were higher for I PSS responders than for non-responders （26.09 vs. 24.06, P=0.03）. An EjFD score reduction was more frequent in IPSS responders. The incidence of EjD was small, but not negligible and was more frequent in patients with less lower urinary tract symptoms, a smaller prostate, higher baseline MSHQ totals and higher EjFD scores.

关键词： alpha-1 adrenergic receptors benign prostatic hyperplasia ejaculation lower urinary tract symptom Male Sexual HealthQuestionnaire prostatic hyperplasia tamsulosin

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Engineered NiCo-LDH nanosheets- and ZnFe_(2)O_(4) nanocubes-decorated carbon nanofiber bonded mats for high-rate asymmetric supercapacitors

引用

Green Energy & Environment 2022年第6期7卷 1228-1240页

作者： Jae-Gyoung Seong Tae hoon Ko Danyun Lei Woong-ki Choi Yun-Su Kuk Min-Kang Seo Byoung-Suhk kim Department of Organic Materials&Fiber Engineering Jeonbuk National University567 Baekje-daeroDeokjin-guJeonju-siJeollabuk-do54896Republic of Korea Department of BIN Convergency Technology Jeonbuk National University567 Baekje-daeroDeokjin-guJeonju-siJeollabuk-do54896Republic of Korea Korea Institute of Carbon Convergence Technology Jeonju54852Republic of Korea Department of Environmental Biology and Water Engineering College of Urban ConstructionWuchang Shouyi UniversityWuhan430064China

In this work,we have prepared the hierarchically nanostructured core–shell NiCo layered double hydroxide(NiCo-LDH)nanosheets-and ZnFe_(2)O_(4) nanocubes-decorated polyacrylonitrile(PAN)/pitch-based carbon nanofibers(PPCNs)webs(NiCo-LDH@PPCNs as cathode and ZnFe_(2)O_(4)@PPCNs as anode materials)with the bonded network structure by a facile and scalable hydrothemal ***,the low-cost pitch with lower softening point(~90℃)as co-precursor was utilized to produce the PAN/pitch-based carbon nanofibers(PPCNs)with enhanced electrical *** obtained PPCNs with pitch content of 30%(PP30CNs)electrode material delivered higher specific capacitance(~67 F g^(-1))than that(~48 F g^(-1))of the PAN-based carbon nanofibers(PCNs)at 1 A g^(-1),due to the increased electrical conductivity and lower interfacial charge transfer resistance(RCT)of~0.16 ***,the NiCo-LDH-decorated PP30CNs(NiCoLDH@PP30CNs)as cathode material showed superior specific capacitance of 1162 F g^(-1) at 1.0 A g^(-1) and ultra-high retention rate of 91.56%at 10 A g^(-1).The ZnFe_(2)O_(4)@PP30CNs as anode material also showed higher specific capacitance of 282 F g^(-1) at 1 A g^(-1) and good rate capability with capacitance retention of 56.73%at 10 A g^(-1).The as-fabricated asymmetric NiCo-LDH@PP30CNs//ZnFe_(2)O_(4)@PP30CNs hybrid supercapacitor device delivered a specific capacitance of~98 F g^(-1) at 1 A g^(-1) and excellent capacitance retention of~88%after 5000 charge–discharge cycles.

关键词： Carbon nanofiber Pitch Asymmetric Rate capability Supercapacitor

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Biocompatible custom ceria nanoparticles against reactive oxygen species resolve acute inflammatory reaction after intracerebral hemorrhage

引用

Nano Research 2017年第8期10卷 2743-2760页

作者： Dong-Wan Kang Chi Kyung kim Han-Gil Jeong Min Soh Taeho kim In-Young Choi SeuI-ki ki Do Yeon kim Wookjin Yang Taeghwan Hyeon Seung-hoon Lee Laboratory of Innovative Nanobiotechnology Biomedical Research Institute Seoul National University Hospital Seoul 03080 Republic of Korea Department of Neurology Seoul National University Hospital Seou103080 Republic of Korea Department of Neurology Korea University Guro Hospital and Korea University College of Medicine Seou108308 Republic of Korea Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul 151-742 Republic of Korea School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University Seoul 151-742 Republic of Korea

Intracerebral hemorrhage （ICH） is a devastating subtype of stroke with a high mortality rate, for which there currently is no effective treatment. A perihematomal edema caused by an intense inflammatory reaction is more deleterious than the hematoma itself and can result in neurological deterioration and death. Ceria nanoparticles （CeNPs） are potent free radical scavengers with potential for biomedical applications. As oxidative stress plays a major role in post-ICH inflammation, we hypothesized that CeNPs might protect against ICH. To test this hypothesis, core CeNPs were synthesized using a modified reverse micelle method and covered with phospholipid-polyethylene glycol （PEG） to achieve biocompatibility. We investigated whether our custom-made biocompatible CeNPs have protective effects against ICH. The CeNPs reduced oxidative stress, hemin-induced cytotoxicity, and inflammation in vitro. In a rodent ICH model, intravenously administered CeNPs were mainly distributed in the hemorrhagic hemisphere, suggesting that they could diffuse through the damaged blood-brain barrier. Moreover, CeNPs attenuated microglia/macrophage recruitment around the hemorrhagic lesion and inflammatory protein expression. Finally, CeNP treatment reduced the brain edema by 68.4% as compared to the control. These results reveal the great potential of CeNPs as a novel therapeutic agent for patients with ICH.

关键词： ceria nanoparticles intracerebral hemorrhage free radical injury anti-inflammation neuroprotective agents biomedical application

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Management of the complications of endoscopic submucosal dissection

引用

World Journal of Gastroenterology 2011年第31期17卷 3575-3579页

作者： Seong Hwan kim Jeong Seop Moon Young hoon Youn ki Myung Lee sung Joon Lee Division of Gastroenterology Department of Internal MedicineEulji University Division of Gastroenterology Department of Internal MedicineInje UniversitySeoul Paik Hospital Division of Gastroenterology Department of Internal MedicineYonsei University-ang Nam Severance Hospital Division of Gastroenterology Department of Internal MedicineAjou University Hospital Division of Gastroenterology Department of Internal Medicineang-on University Hospital

Endoscopic submucosal dissection(ESD) is currently widely accepted as a standard treatment option for early gastrointestinal neoplasms in ***,ESD has technical difficulties and a longer procedure time than conventional endoscopic *** it may have a higher risk of complications than conventional endoscopic resection ***,the ESD study group of Korean Society of Gastrointestinal Endoscopy,have experienced many complications,mostly treated by endoscopic or conservative ***,we introduce and share our experiences for managementof post ESD complications and review published papers on the topic.

关键词： Endoscopic submucosal dissection Complication Management

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Diagnostic value of maximal-outer-diameter and maximal-mural-thickness in use of ultrasound for acute appendicitis in children

引用

World Journal of Gastroenterology 2009年第23期15卷 2900-2903页

作者： Bo-Kyung Je sung-Bum kim Seung Hwa Lee ki Yeol Lee Sang hoon Cha Department of Radiology College of Medicine Korea University #516 Gojan1-Dong Danwon-Gu Ansan-City Gyeonggi-Do 425-707 South Korea Department of Internal Medicine Dongshin Hospital #430 Hongeundong Seodaemungu Seoul 120-100 South Korea

MM： To evaluate the maximal-outer-diameter （MOD） and the maximal-mural-thickness （MMT） of the appendix in children with acute appendicitis and to determine their optimal cut-off values to diagnose acute appendicitis.METHODS： In total, 164 appendixes from 160 children between 1 and 17 years old （84 males, 76 females; mean age, 7.38 years） were examined by high-resolution abdominal ultrasound for acute abdominal pain and the suspicion of acute appendicitis. We measured the MOD and the MMT at the thickest point of the appendix. Patients were categorized into two groups according to their medical records： patients who had surgery （surgical appendix group） and patients who did not have surgery （non-surgical appendix group）. Data were analyzed by MedCalc v.9.3. The rank sum test （Mann-Whitney test） was used to evaluate the difference in the MOD and the MMT between the two groups. ROC curve analysis was used to determine the optimal cut-off value of the MOD and the MMT on diagnosis of acute appendicitis.RESULTS： There were 121 appendixes （73.8%） in the non-surgical appendix group and 43 appendixes （26.2%） in the surgical appendix group. The median MOD differed significantly between the two groups （0.37 cm vs 0.76 cm, P〈 0.0001）, and the median MMT also differed （0.15 cm vs 0.33 cm, P 〈 0.0001）. The optimal cut-off value of the MOD and the MMT for diagnosis of acute appendicitis in children was 〉 0.57 cm （sensitivity 95.4%, specificity 93.4%） and 〉 0.22 cm （sensitivity 90.7%, specificity 79.3%）, respectively.CONCLUSION： The MOD and the MMT are reliable criteria to diagnose acute appendicitis in children. An MOD 〉 0.57 cm and an MMT 〉 0.22 cm are the optimal criteria.

关键词： Appendicitis Ultrasonography Pediatrics Diagnosis ROC curve

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Endoluminal closure of an unrecognized penetrating stab wound of the duodenum with endoscopic band ligation: A case report

引用

World Journal of Clinical Cases 2019年第20期7卷 3271-3275页

作者： Dae hoon kim Hanlim Choi ki Bae kim Hyo Yung Yun Joung-Ho Han Department of Surgery Chungbuk National University HospitalChungbuk National University College of MedicineCheongju-si 28644South Korea Department of Internal Medicine Chungbuk National University HospitalChungbuk National University College of MedicineCheongju-si 28644South Korea

BACKGROUND A penetrating injury of a hollow viscus is an obvious indication for an exploratory laparotomy,but is not typically an indication for endoscopic *** SUMMARY A 27-year-old man visited the emergency department with a self-inflicted abdominal stab *** to the colon and ileum were detected,but an injury to the second portion of the duodenum was *** the day following admission to our institution,the patient became hemodynamically unstable with massive hematochezia,although there was no evidence of bleeding in the Levin tube or Jackson-Pratt *** thus performed an upper gastrointestinal endoscopy and discovered a missed duodenal injury that was actively *** endoscopic band ligation was performed for hemostasis and closure of the *** patient was subsequently discharged without any *** A penetrating injury of the duodenum can be overlooked,so careful abdominal exploration is very *** a missed duodenal injury is suspected,a cautious endoscopic approach may be helpful.

关键词： Penetrating abdominal injury Endoluminal treatment Unrecognized duodenal injury Case report

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：