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Huge undifferentiated carcinoma of the pancreas with osteoclast-like giant cells

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World journal of Gastroenterology 2014年第10期20卷 2725-2730页

作者： Sungho jo Department of Surgery Dankook University College of Medicine Cheonan Chungnam 330-714 South Korea

Undifferentiated carcinoma of the pancreas with osteoclast-like giant cells(OGCs)is very rare,less than1%of all pancreatic malignancies,and shows worse prognosis than that of invasive ductal adenocarcinoma of the *** present a case of en bloc resection for a huge undifferentiated carcinoma with OGCs that invaded the stomach and transverse mesocolon.A 67-year female was admitted for left upper quadrant pain and computed tomography demonstrated a mass occupying the lesser sac and abutting the stomach and *** were no distant metastases and the patient underwent subtotal pancreatectomy with splenectomy,total gastrectomy,and segmental resection of the transverse *** examination confirmed an 11 cm-sized undifferentiated carcinoma of the pancreas with *** staining revealed reactivity with pan-cytokeratin in adenocarcinoma component,with vimentin in neoplastic multinucleated cells,with CD45/CD68 in OGCs,and with p53 in tumor cells,*** patient had suffered from multiple bone metastases and survived9 mo after *** case supports the ductal epithelial origin of undifferentiated carcinoma with OGCs and early diagnosis could result in favorable surgical *** on the surgical role and prog-nostic factors need to be warranted in this tumor.

关键词： Carcinoma Giant cell Pancreas Prognosis Treatment outcome

Diagnostic accuracy of enhanced liver fibrosis test to assess liver fibrosis in patients with chronic hepatitis C

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Hepatobiliary & Pancreatic Diseases International 2013年第5期12卷 500-507页

作者： Roberto Catanzaro Michele milazzo Silvia Arona Chiara Sapienza Dario Vasta Domenico Arcoria Francesco Marotta Department of Medical and Pediatric Sciences Institute of Internal Medicine "A. Francaviglia"Section of Gastro-enterologyUniversity of Catania"G. Rodolico" Hospital Laboratory analysis "MedLab-Analisi Cliniche" Specialist in diabetes and metabolic diseases ReGenera Research Group for Aging Intervention

BACKGROUND:The prognosis and clinical management of patients with chronic liver diseases are closely related to the severity of liver *** biopsy is considered the gold standard for the staging of liver ***,it is an invasive test sometimes related to *** study aimed to assess the diagnostic value of enhanced liver fibrosis(ELF) test to predict liver fibrosis in patients with chronic hepatitis ***:This study included 162 patients with liver disease and 67 healthy *** acid,tissue inhibitor of matrix metalloproteinase type 1,and amino-terminal propeptide type III procollagen were measured by enzymelinked immunosorbent assay with the ELF test ADVIA Centaur(Siemens Healthcare Diagnostics Inc.).Fibrosis stage was determined using the Metavir scoring ***:In our study,for the diagnosis of significant fibrosis(Metavir F≥2) a cut-off value >7.72 provides a sensitivity of 93.0% and a specificity of 83.0%.The areas under the receiver operator characteristic curve,sensitivity,specificity,and positive and negative predictive values were 0.94,93.3%,81.0%,93.3%,and 81.0%,respectively(P9.3 provides a sensitivity of 93.0% and a specificity of 86.0%.The areas under the receiver operator characteristic curve,sensitivity,specificity,and positive and negative predictive values were 0.94,79.1%,90.8%,75.6%,and 92.3%,respectively(P<0.001).CONCLUSIONS:The ELF test is a promising non-invasive method for assessing liver fibrosis in patients with chronic hepatitis *** is effective in the diagnosis of both fibrosis and cirrhosis.

关键词： enhanced liver fibrosis test non-invasive diagnosis liver fibrosis blood marker

Steady-state probability density function in wave turbulence under large volume limit

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Chinese Physics B 2011年第5期20卷 139-145页

作者： Yeontaek Choi Sang Gyu jo Division of Fusion and Convergence of Mathematical Sciences National Institute for Mathematical SciencesDaejeon 305-340Republic of Korea Department of Physics Kyungpook National UniversityDaegu 702-701Republic of Korea

We investigate the possibility for two-mode probability density function （PDF） to have a non-zero flux steady state solution. We take the large volume limit so that the space of modes becomes continuous. It is shown that in this limit all the steady-state twoor higher-mode PDFs are the product of one-mode PDFs. The flux of this steady-state solution turns out to be zero for any finite mode PDF.

关键词： wave turbulence probability flux multi-mode probability density function Larguerreequation

Visible-light-activated N-doped CQDs/g-C3N4/Bi2WO6 nanocomposites with different component arrangements for the promoted degradation of hazardous vapors

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journal of Materials Science & Technology 2020年第5期40卷 168-175页

作者： Mi Gyeong Kim Wan-Kuen jo Department of Environmental Engineering Kyungpook National University 80 University RoadBukguDaegu702-701Republic of Korea

To investigate whether the arrangement of componentsin multi-composite photocatalysts may affect their photocatalytic properties,due to different charge-transfer routes,two ternary-nanocomposite photocatalysts with different component arrangements,comprising N-doped carbon quantum dots(NCQDs),g-C3N4(CN),and Bi2WO6(BWO)(hereafter referred to as NCQDs/CN/BWO),were developed,and the photocatalytic degradation of model hazardous vapors under visible-light illumination was *** I NCQDs/CN/BWO,which was developed by the combination of NCQDs/BWO and CN,exhibited photocatalytic ability superior to that of type II NCQDs/CN/BWO,which was developed by the combination of CN/BWO and NCQDs;the superior photocatalytic ability corresponded to the dual properties of NCQDs:charge mediation and upconversion ***,the photocatalytic ability of NCQDs/CN/BWO was greater than those of the reference catalysts;in addition,this photocatalyst exhibited outstanding photochemical ***,the effects of CN/(BWO+CN)weight ratio of the CN/BWO dual nanocomposites and the NCQDs/(BWO+CN+NCQDs)weight percentage of NCQDs/CN/BWO ternary nanocomposites on the pollutant removal efficiency were *** plausible mechanisms over the two NCQDs/CN/BWO photocatalysts for the degradation of hazardous vapors were *** component arrangement approach proposed herein afforded a technique toward the perceptive development of novel multi-component heterostructures for the photocatalytic degradation of hazardous vapors.

关键词： Component arrangement Charge-transfer route NCQDs dual role Charge mediator Upconversion photoluminescence

Review on Tidal Energy Technologies and Research Subjects

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China Ocean Engineering 2020年第1期34卷 137-150页

作者： Chul Hee jo Su Jin HWANG Department of Naval Architecture and Ocean Engineering Inha University

Tidal current power is one of the promising and reliable renewable energies with the advantage of continuous and predictable resource. It can make stable electricity regardless of weather conditions or seasons all year around. The required technologies for tidal current power in the ocean have been developed for years and now recognized that it could be commercialized after intensive field tests and successful demonstrations. There are several tidal farm development projects in the world, such as the MeyGen project in UK with its commercialization at hand. However, various research subjects in the tidal current energy field are seeking improvements and industrialization of tidal current power in terms of economy and technical reliability. This paper introduces the resource assessment procedure of tidal energy that has been applied in Korea coastal regions. The key research subjects for tidal current power together with the interaction effect of multi-arrangement is described. Also, this paper is to introduce the research output of each subject such as turbine design, experimental validation, turbine interaction and wake, multi-array module, FSI (fluid-structure interaction), and duct application.

关键词： tidal current power resource assessment turbine design experimental validation turbine interaction multi arrangement FSI(fluid-structure interaction)

用LC-MS/MS方法筛查饮用水矿泉水和环境水中PPT级的165种农药

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环境化学 2007年第3期26卷 413-414页

作者： Didier ORTELLI Patrick EDDER joёlle NANOZ Claude CORVI 单位不详

如今水环境中有机污染物对环境的影响已经远远超过以往.农业中广泛使用的农药往往会造成残留而污染土壤和地表水.目前,大多数水源都受到农药的污染,却仍然用于生产饮用水.作为日内瓦官方食品控制机构,我们实验室已经建立起一种快速、灵... 详细信息

如今水环境中有机污染物对环境的影响已经远远超过以往.农业中广泛使用的农药往往会造成残留而污染土壤和地表水.目前,大多数水源都受到农药的污染,却仍然用于生产饮用水.作为日内瓦官方食品控制机构,我们实验室已经建立起一种快速、灵敏、耐用的分析方法,以测定环境和饮用水样品中的农药污染.该方法用于对包括农业中广泛使用的165种农药进行筛查和定量.这些农药主要包括除草剂,如三嗪类及其衍生物,杀菌剂和杀虫剂。[第一段]

关键词：农药污染环境水饮用水 LC-MS PPT级筛查矿泉水 S方法

Vertical stratification of bat assemblages in flooded and unflooded Amazonian forests

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Current Zoology 2010年第4期56卷 469-478页

作者： Maria joo Ramos PEREIRA joo Tiago MARQUES jorge M.PALMEIRIM Centro de Biologia Ambiental Departamento de Biologia Animal Faculdade de Ciências da Universidade de Lisboa Instituto de Desenvolvimento Sustentvel Mamirau

Tropical rainforests usually have multiple strata that results in a vertical stratification of ecological opportunities foranimals. We investigated if this stratification influences the way bats use the vertical space in flooded and unflooded forests of theCentral Amazon. Using mist-nets set in the canopy (17 to 35 m high) and in the understorey (0 to 3 m high) we sampled four sitesin upland unflooded forests (terra firme), three in forests seasonally flooded by nutrient-rich water (varzea), and three in forestsseasonally flooded by nutrient-poor water (igapo). Using rarefaction curves we found that species richness in the understorey andcanopy were very similar. An ordination analysis clearly separated the bat assemblages of the canopy from those of the understorey inboth flooded and unflooded habitats. Gleaning carnivores were clearly associated with the understorey, whereas frugivores wereabundant in both strata. Of the frugivores, Carollinae and some Stenodermatinae were understorey specialists, but several Stenodermatinaemostly used the canopy. The first group mainly includes species that, in general, feed on fruits of understorey shrubs,whereas the second group feed on figs and other canopy fruits. We conclude that vertical stratification in bat communities occurseven within forests with lower canopy heights, such as Amazonian seasonally flooded forests, and that the vertical distribution ofbat species is closely related to their diet and foraging behaviour.

关键词： Amazon Bats Chiroptera Vertical stratification Floodplain

Machine-Learning Based Packet Switching Method for Providing Stable High-Quality Video Streaming in Multi-Stream Transmission

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Computers, Materials & Continua 2024年第3期78卷 4153-4176页

作者： Yumin jo jongho Paik Major in Software Fusion Department of ComputerSeoulWomen’s UniversitySeoul01797South Korea Department of Software Convergence Seoul Women’s UniversitySeoul01797South Korea

Broadcasting gateway equipment generally uses a method of simply switching to a spare input stream when a failure occurs in a main input ***,when the transmission environment is unstable,problems such as reduction in the lifespan of equipment due to frequent switching and interruption,delay,and stoppage of services may ***,applying a machine learning(ML)method,which is possible to automatically judge and classify network-related service anomaly,and switch multi-input signals without dropping or changing signals by predicting or quickly determining the time of error occurrence for smooth stream switching when there are problems such as transmission errors,is *** this paper,we propose an intelligent packet switching method based on the ML method of classification,which is one of the supervised learning methods,that presents the risk level of abnormal multi-stream occurring in broadcasting gateway equipment based on ***,we subdivide the risk levels obtained from classification techniques into probabilities and then derive vectorized representative values for each attribute value of the collected input data and continuously update *** obtained reference vector value is used for switching judgment through the cosine similarity value between input data obtained when a dangerous situation *** the broadcasting gateway equipment to which the proposed method is applied,it is possible to perform more stable and smarter switching than before by solving problems of reliability and broadcasting accidents of the equipment and can maintain stable video streaming as well.

关键词： Broadcasting and communication convergence multi-stream packet switching advanced television systems committee standard 3.0(ATSC 3.0) data pre-processing machine learning cosine similarity

Structural metamaterials with negative mechanical/thermomechanical indices: A review

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Progress in Natural Science:Materials International 2021年第6期31卷 801-808页

作者： jo?o O.Cardoso jo?o Paulo Borges Alexandre Velhinho CENIMAT/i3N Departamento de Ciência dos Materiais Faculdade de Ciências e Tecnologia Universidade Nova de Lisboa

Structural metamaterials presenting negative values of one or more mechanical and thermomechanical indices–namely the Poisson's ratio, the linear compressibility, and the coefficient of thermal expansion – are the promising candidates to the applications in many fields, ranging from precision mechanics to biomedical devices or energy absorption. Although scattered mentions may be found in the literature since the late eighties of 20th century, the systematic research efforts concerning these materials became effective much later. The present work is to review the main scientific contributions to the topic in the last five years. This paper first deals with those metamaterials showing a single negative index, and then proceeds to analyze the much less frequent instances of coupled negative indices, with emphasis on the so-called anepectic case, which exhibits an unusual thermomechanical response.

关键词： Mechanical and thermomechanical metamaterials Auxetic Anepectic Negative Poisson's ratio Negative thermal expansion Negative linear compressibility