检索结果-南通市图书馆

World Journal of Gastroenterology 2007年第45期13卷 6112-6114页

作者： Jun-Seok Park Sung-Bum Kang Duck-Woo Kim Na-Young Kim kyoung-ho lee Young-hoon Kim Department of Surgery Chung-Ang University Hospital Seoul National University Bundang Hospital Seongnam-si Gyeonggi-do 463-707 Korea Department of Surgery Seoul National University Bundang Hospital Seongnam-si Gyeonggi-do 463-707 Korea Department of Internal Medicine Seoul National University Bundang Hospital Seongnam-si Gyeonggi-do 463-707 Korea Department of Diagnostic Radiology Seoul National University Bundang Hospital

There are no reports regarding perforation of the colorectum induced by anorectal manometry. We report two cases of colorectal perforation that occurred during manometry in the patients undergoing restorative proctectomy for distal rectal cancer. In the first patient, computed tomography showed an extraperitoneal perforation in the pelvic cavity and a rupture of the rectal wall. A localized perforation into the retroperitoneum was managed conservatively. In the second patient, a 3 cm linear colon rupture was detected above the anastomotic site. A primary closure of the perforated colon and proximal ileostomy were conducted, but the patient died 2 wk later. We hypothesize that the perforation induced by anorectal manometry may be associated with the relative weakening of the proximal bowel wall due to anastomosis, decreased compliance, and abnormal rectal sensation. We suggest that measurement of the maximum tolerable volume should not be routinely performed alter restorative proctectomy for distal rectal cancer.

关键词： Iatrogenic perforation Anorectal manometry Rectal cancer Low anterior resection

Sex-based differences in histology,staging,and prognosis among 2983 gastric cancer surgery patients

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 2022年第9期28卷 933-947页

作者： Yonghoon Choi Nayoung Kim Ki Wook Kim Hyeong ho Jo Jaehyung Park Hyuk Yoon Cheol Min Shin Young Soo Park Dong ho lee Hyeon Jeong Oh Hye Seung lee Young Suk Park Sang-hoon Ahn Yun-Suhk Suh Do Joong Park Hyung-ho Kim Ji-Won Kim Jin Won Kim Keun-Wook lee Won Chang Ji hoonPark Yoon Jin lee kyoung ho lee Young hoon Kim Department ofInternal Medicine Seoul National University Bundang HospitalSeongnam 13620South Korea Nayoung Department of Internal Medicine Seoul National University College of MedicineSeoul 03080South Korea Department of Pathology Seoul National University Bundang HospitalSeongnam 13620South Korea Department of Pathology Seoul National University College of MedicineSeoul 03080South Korea Department of Surgery Seoul National University Bundang HospitalSeongnam 13620South Korea Department of Surgery Seoul National University College of MedicineSeoul 03080South Korea Department of Radiology Seoul National University Bundang HospitalSeongnam 13620South Korea Department of Radiology Seoul National University College of MedicineSeoul 03080South Korea

BACKGROUND Few studies have been conducted on sex differences in the incidence, pathophysiology, and prognosis of gastric cancer(GC).AIM To analyze the differences in GC characteristics according to sex in patients who underwent surgical treatment for *** A total of 2983 patients diagnosed with gastric adenocarcinoma who received surgical treatment at the Seoul National University Bundang hospital between 2003 and 2017 were *** clinicopathological characteristics, histologic type of GC, overall and GC-specific survival rates, and associated risk factors were *** Among the 2983 patients, 2005(67.2%) and 978(32.8%) were males and females, *** average age of the female group(59.36 years) was significantly younger than that of the male group(61.66 years;P however, this difference disappeared for GC-specific survival(P = 0.168), except for the poor GC-specific survival rate in advanced-stage cancer(stage Ⅲ or above) in females(P = 0.045).The risk factors for GC-related mortality were older age, upper location of GC, and diffuse-or mixed-type *** terms of comorbidities, more males died from diseases other than GC, including other malignancies such as lung cancer, hepatocellular carcinoma, and pancreatic cancer, and respiratory diseases such as interstitial lung disease and chronic obstructive pulmonary disease, while there were relatively more cardiovascular or cerebrovascular deaths in *** Sex-based differences in GC were

关键词： Gastric cancer Histology Prognosis Sex difference Survival

Clinical significance of isolated biliary candidiasis in patients with unresectable cholangiocarcinoma

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2016年第5期15卷 533-539页

作者： In-ho Kim Jae-Ki Choi Dong-Gun lee In Seok lee Tae ho hong Young kyoung You ho Jong Chun Myung Ah lee Departments of Internal Medicine Division of Medical 0ncologySeoul St. Mary’s Hospital The Catholic University of Korea Seoul Korea Departments of Internal Medicine Division of Infectious Diseases Bucheon St. Mary’s Hospital The Catholic University of Korea Seoul Korea Division of Infectious Diseases Seoul St. Mary’s Hospital The Catholic University of Korea Seoul Korea Division of Gastroenterology Seoul St. Mary’s Hospital The Catholic University of Korea Seoul Korea Department of Surgery Seoul St. Mary’s Hospital The Catholic University of Korea Seoul Korea Department of Radiology Seoul St. Mary’s Hospital The Catholic University of Korea Seoul Korea Department of Hepato-Biliary-Pancreatic Cancer Center Seoul St. Mary’s Hospital The Catholic University of Korea Seoul Korea

BACKGROUND: The frequency of isolated biliary candidiasis is increasing in cancer patients. The clinical signiifcance of isolated biliary candidiasis remains unclear. We analyzed the risk factors of biliary candidiasis and outcomes of the patients with unresectable cholangiocarcinoma after percutaneous transhepatic biliary drainage (PTBD). METhoDS: Among 430 patients who underwent PTBD between January 2012 and March 2015, 121 patients had unresectable cholangiocarcinoma. Bile and blood samples were collected for consecutive fungal culture. RESULTS: The study cohort included 49 women and 72 men with a median age of 71 years. Multivariate analysis showed that cancer progression (P=0.013), concurrent presence of another microorganism (P=0.010), and previous long-term (>7 days) antibiotic use (P=0.011) were potential risk factors of biliary candidiasis. Chemotherapy was not associated with overall biliary candidiasis (P=0.196), but was signiifcantly related to repeated biliary candidiasis (P=0.011). Patients with isolated biliary candidiasis showed remarkably reduced survival compared with those without (median overall sur-vival (OS): 32 vs 62 days,P=0.011)Subgroup analysis was also performed. Patients with repeated candidiasis had markedly decreased survival compared with those with transient candi-diasis (median OS: 30 vs 49 days,P=0.046). Biliary candidiasis was identiifed as a poor prognostic factor by univariate and multivariate analyses (P=0.033). Four cases of repeated can-didiasis (4/19, 21%) showedCandida species in consecutive blood culture until the end of the study, but others showed no candidemia. CONCLUSIONS: Isolated biliary candidiasis may be associ-ated with poor prognosis in patients with unresectable chol-angiocarcinoma. Especially, repeated biliary candidiasis may have the possibility of progression to candidemia. We suggest that biliary dilatation treatment or antifungal agents might be helpful for patients with biliary candidiasis.

关键词： biliary candidiasis biliary obstruction cholangiocarcinoma percutaneous transhepatic biliary drainage

Formic acid as an alternative reducing agent for the catalytic nitrate reduction in aqueous media

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2013年第8期25卷 1696-1702页

作者： Eun-kyoung Choi Kuy-hyun Park ho-bin lee Misun Cho Samyoung Ahn Department of Environmental Education Sunchon National University

Formic acid was used for the nitrate reduction as a reductant in the presence of Pd：Cu/γ-alumina catalysts. The surface characteristics of the bimetallic catalyst synthesized by wet impregnation were investigated by SEM, TEM-EDS. The metals were not distributed homogeneously on the surface of catalyst, although the total contents of both metals in particles agreed well with the theoretical values. Formic acid decomposition on the catalyst surface, its influence on solution pH and nitrate removal efficacy was investigated. The best removal of nitrate （50 ppm） was obtained under the condition of 0.75 g/L catalyst with Pd：Cu ratio （4：1） and two fold excess of formic acid. Formic acid decay patterns resembled those of nitrate removal, showing a linear relationship between kf （formic acid decay） and k （nitrate removal）. Negligible amount of ammonia was detected, and no nitrite was detected, possibly due to buffering effect of bicarbonate that is in situ produced by the decomposition of formic acid, and due to the sustained release of H2 gas.

关键词： formic acid catalytic nitrate reduction Pd:Cu/γ-alumina catalyst H2 supply

Minimally invasive vs open pancreatectomy for nonfunctioning pancreatic neuroendocrine tumors

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Oncology 2020年第10期12卷 1133-1145页

作者： Juwan Kim ho kyoung Hwang Woo Jung lee Chang Moo Kang Department of Surgery Yonsei University College of MedicineSeoul 03722South Korea

BACKGROUND The mainstay of treating nonfunctioning-pancreatic neuroendocrine tumors(NFPNETs)is surgical ***,minimally invasive approaches to pancreatic resection for treating NF-PNETs are not widely accepted,and the longterm oncological outcomes of such approaches remain *** To determine the short-and long-term outcomes of minimally invasive pancreatic resection conducted in patients with *** Prospective databases from Severance hospital were searched for 110 patients who underwent curative resection for NF-PNETs between January 2003 and August *** The proportion of minimally invasive surgery(MIS)procedures performed for NF-PNET increased to more than 75%after *** was no significant difference in post-operative complications(P=0.654),including pancreatic fistula(P=0.890)and delayed gastric emptying(P=0.652),between MIS and open *** statistically significant difference was found in disease-free survival between the open approach group and the MIS group(median follow-up period,28.1 mo;P=0.428).In addition,the surgical approach(MIS vs open)was not found to be an independent prognostic factor in treating NF-PNET patients[Exp(β)=1.062;P=0.929].CONCLUSION Regardless of the type of surgery,a minimally invasive approach can be safe and feasible for select NF-PNET patients.

关键词： Nonfunctioning-pancreas neuroendocrine tumor Pancreatic neuroendocrine tumor Minimally invasive surgery Oncologic outcome Laparoscopic pancreaticoduodenectomy Laparoscopic distal pancreatectomy

Preoperative defining system for pancreatic head cancer considering surgical resection

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26期22卷 6076-6082页

作者： Seok Jeong Yang ho kyoung Hwang Chang Moo Kang Woo Jung lee Department of Surgery Ulsan University Hospital University of Ulsan College of Medicine Department of Hepatobiliary and Pancreatic Surgery Yonsei University College of Medicine Pancreaticobiliary Cancer Clinic Yonsei Cancer Center Institute of Gastroenterology Yonsei Severance Hospital

AIM: To provide appropriate treatment, it is crucial to share the clinical status of pancreas head cancer among multidisciplinary treatment ***: A retrospective analysis of the medical records of 113 patients who underwent surgery for pancreas head cancer from January 2008 to December 2012 was performed. We developed preoperative defining system of pancreatic head cancer by describing “resectability - tumor location - vascular relationship - adjacent organ involvement - preoperative CA19-9 (initial bilirubin level) - vascular anomaly”. The oncologic correlations with this reporting system were ***: Among 113 patients, there were 75 patients (66.4%) with resectable, 34 patients (30.1%) with borderline resectable, and 4 patients (3.5%) with locally advanced pancreatic cancer. Mean disease-free survival was 24.8 mo (95%CI: 19.6-30.1) with a 5-year disease-free survival rate of 13.5%. Pretreatment tumor size ≥ 2.4 cm [Exp(B) = 3.608, 95%CI: 1.512-8.609, P = 0.044] and radiologic vascular invasion [Exp(B) = 5.553, 95%CI: 2.269-14.589, P = 0.002] were independent predictive factors for neoadjuvant treatment. Borderline resectability [Exp(B) = 0.222, P = 0.008], pancreatic head cancer involving the pancreatic neck [Exp(B) = 9.461, P = 0.001] and arterial invasion [Exp(B) = 6.208, P = 0.010], and adjusted CA19-9 ≥ 50 [Exp(B) = 1.972 P = 0.019] were identified as prognostic clinical factors to predict tumor ***: The suggested preoperative defining system can help with designing treatment plans and also predict oncologic outcomes.

关键词： Preoperative defining system Pancreas head cancer Borderline resectable Adjusted CA19-9 Neoadjuvant therapy

Ag-GST/HfO_(x)-based unidirectional threshold switching selector with low leakage current and threshold voltage distribution for high-density cross-point arrays

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2024年第1期43卷 280-288页

作者： kyoung-Joung Yoo Dae-Yun Kang Nahyun Kim ho-Jin lee Ta-Hyeong Kim Taeho Kim Tae Geun Kim School of Electrical Engineering Korea UniversitySeoul 02841Republic of Korea

The use of electrochemical-metallization-based volatile threshold switching selectors in cross-point arrays has been widely explored owing to their high on-off ratios and simple ***,these devices are unsuitable for cross-point architectures because of the difficulty in controlling the random filament formation that results in large fluctuations in the threshold voltage during *** this study,we investigated the unidirectional threshold transition characteristics associated with an Ag/GST/HfO_(x)/Pt-based bilayer selector and demonstrated the occurrence of a low leakage current(hold voltage(Δ0.11 V).The bilayer structure could control the filament formation in the intermediate state through the insertion of an HfO_(x) tunneling *** stacking a bilayer selector with NiO_(x)based resistive random-access memory,the leakage and programming currents of the device could be significantly *** the crossbar array configuration,we performed equivalent circuit analysis of a one-selector oneresistor(1S1R) devices and estimated the optimal array size to demonstrate the applicability of the proposed *** maximum acceptable crossbar array size of the 1S1R device with the Ag/GST/HfO_(x)/Pt/Ti/NiO_(x)/Pt structure was 5.29×10^(14)(N^(2),N=2.3×10^(7)).

关键词： Selector device Tunneling barrier Threshold switching Sputtering 1S1R Cross-point array

Predictors of poor outcomes in patients with wild mushroom-induced acute liver injury

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2017年第7期23卷 1262-1267页

作者： Taerim Kim Danbi lee Jae ho lee Yoon-Seon lee Bum Jin Oh kyoung Soo Lim Won Young Kim Department of Emergency Medicine University of Ulsan College of MedicineAsan Medical Center Department of Gastroenterology Asan Medical CenterUniversity of Ulsan College of Medicine

To identify early predictive markers of poor outcomes in patients with acute liver injury from wild mushroom *** observational, retrospective record review involved adults aged ≥ 18 years admitted to emergency department with mushroom intoxication from January 2005 to December 2015. The diagnosis of mushroom intoxication was based on the following: (1) a positive history of recent wild mushroom intake (either raw or cooked); (2) the onset of gastrointestinal symptoms, such as watery diarrhea, vomiting, and/or abdominal pain, after ingestion; and (3) the exclusion of other possible causes of acute liver injury. Acute liver injury was defined by a > 5-fold elevation of liver enzymes or moderate coagulopathy [international normalized ratio (INR) > 2.0]. Clinical and laboratory findings were compared in survivors and *** 93 patients with mushroom intoxication, 23, 11 men (47.8%) and 12 women (52.2%), of median age 61 years, developed acute liver injury. The overall in-hospital mortality rate was 43.5% (10/23). Among the laboratory variables, mean serum alkaline phosphatase (73.38 ± 10.89 mg/dL vs 180.40 ± 65.39 mg/dL, P howed that total bilirubin concentration (OR = 3.58, 95%CI: 1.25-10.22), indirect/direct bilirubin ratio (OR = 0.14, 95%CI: 0.02-0.94) and aPTT (OR = 1.30, 95%CI: 1.04-1.63) were significantly associated with mortality. All patients with total bilirubin > 5 mg/dL or aPTT > 50 s on day 3 *** of bilirubin concentrations and aPTT may help in predicting clin

关键词： Mushroom Liver Outcome Intoxication Bilirubin

Piezoelectrically Actuated Biomimetic Self-Contained Quadruped Bounding Robot

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 Bionic Engineering 2009年第1期6卷 29-36页

作者： Thanhtam ho Sangyoon lee Department of Mechanical Design and Production Engineering Konkuk UniversitySeoul 143-701Korea

This paper presents the development of a mesoscale self-contained quadruped mobile robot that employs two pieces of piezocomposite actuators for the bounding *** design of the robot leg is inspired by legged insects and animals, and the biomimetic concept is implemented in the robot in a simplified form,such that each leg of the robot has only one degree of *** lack of degree of freedom is compensated by a slope of the robot frame relative to the horizontal *** the implementation of the self-contained mobile robot,a small power supply circuit is designed and installed on the *** results show that the robot can locomote at about 50 mm·s^(-1)with the circuit on board,which can be considered as a significant step toward the goal of building an autonomous legged robot actuated by piezoelectric actuators.

关键词： piezoelectric actuator quadruped robot bounding locomotion self-contained legged robot

Nanograin network memory with reconfigurable percolation paths for synaptic interactions

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2023年第6期12卷 1040-1050页

作者： hoo-Cheol lee Jungkil Kim Ha-Reem Kim kyoung-ho Kim Kyung-Jun Park Jae-Pil So Jung Min lee Min-Soo Hwang hong-Gyu Park Department of Physics Korea UniversitySeoul 02841Republic of Korea Department of Physics Jeju National UniversityJeju 63243Republic of Korea Department of Physics Chungbuk National UniversityCheongju 28644Republic of Korea

The development of memory devices with functions that simultaneously process and store data is required for efficient *** achieve this,artificial synaptic devices have been proposed because they can construct hybrid networks with biological neurons and perform neuromorphic ***,irreversible aging of these electrical devices causes unavoidable performance *** several photonic approaches to controlling currents have been suggested,suppression of current levels and switching of analog conductance in a simple photonic manner remain ***,we demonstrated a nanograin network memory using reconfigurable percolation paths in a single Si nanowire with solid core/porous shell and pure solid core *** electrical and photonic control of current percolation paths enabled the analog and reversible adjustment of the persistent current level,exhibiting memory behavior and current suppression in this single nanowire *** addition,the synaptic behaviors of memory and erasure were demonstrated through potentiation and habituation *** habituation was achieved using laser illumination on the porous nanowire shell,with a linear decrease in the postsynaptic ***,synaptic elimination was emulated using two adjacent devices interconnected on a single ***,electrical and photonic reconfiguration of the conductive paths in Si nanograin networks will pave the way for next-generation nanodevice technologies.

关键词： electrical percolation network