检索结果-南通市图书馆

Role of computed tomographic colonoscopy of postoperative surveillance in patient with gastric cancer

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 2007年第11期13卷 1646-1651页

作者： Dae Won Jun Oh Young lee Hyun Chul Lim Sung Joon Kwon Hang Lak lee Byung Chul Yoon Ho Soon Choi Joon Soo Hahm Min Ho lee dong hoo lee Department of Internal Medicine Hanyang University College of Medicine Seoul Korea Department of Radiology Hanyang University College of Medicine Seoul Korea Department of General Surgery Hanyang University College of Medicine Seoul Korea

AIM： TO examine the diagnostic yield of colorectal neoplasia at computed tomographic colonoscopy （CTC） as well as the feasibility of contrast enhanced CTC in patients with gastric cancer. METHODS： To examine the incidence of colon polyp we selected postoperative 188 gastric cancer patients, which we refer to as the ‘colon polyp survey group’. To examine the feasibility of CTC for early detection of colon cancer or advanced colon adenoma, we selected 47 gastric cancer patients （M：F 29：18, mean age 53.8 years）, which we call the ‘CT colonoscopy group’. All the 47 patients underwent successive CTC and colonoscopy on the same day. RESULTS： Totally 109 colon polyps were observed from 59 out of 188 gastric cancer patients, the inddence rate of colon polyps in gastric cancer patients being 31.4%. The sensitivity of CTC in detecting individuals with at least 1 lesion of any size was 57.1%, the specificity was 72.7%, the positive predictive value was 47.1%, and the negative predictive value was 71.9%. When the cutoff size was decreased to 6 mm, the sensitivity and specificity were 80.0% and 92.9%, respectively, with positive and negative predictive values of 57.1% and 97.5%, respectively. Only one patient was classified as false negative by virtual colonoscopy. CONCLUSION： The diagnostic yield of colorectal polyp was 31.4% in patients with gastric cancer, and contrast enhanced CTC is an acceptable tool for the detection of synchronous colorectal advanced adenoma and postoperative surveillance of gastric cancer patients.

关键词： Stomach cancer Colon cancer Computed tomocjraphic colonoscopy

Chest wall metastasis from unknown primary site of hepatocellular carcinoma

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 2006年第13期12卷 2139-2142页

作者： Yil Sik Hyun Ho Soon Choi Joong Ho Bae Dae Won Jun Hang Lak lee Oh Young lee Byung Chul Yoon Min Ho lee dong hoo lee Choon Shuk Kee Jung Ho Kang Moon Hyang Park Department of Internal Medicine Hanyang University College of Medicine SeoulKorea Department of Thoracic Surgery Hanyang University College of Medicine SeoulKorea Department of Pathology Hanyang University College of Medicine SeoulKorea

Previous reports of a solitary metastatic hepatocellular carcinoma have been rare. Because this tumor has a different treatment modality and prognosis, an accurate differential diagnosis is essential. Here we report a rare case of a solitary chest wall metastasis from unknown primary site of hepatocellular carcinoma. It involves a 51-year-old man who was admitted to our hospital because of a palpable left upper chest wall mass. The mass was resected and pathologic examination confirmed a diagnosis of metastatic hepatocellular carcinoma. Despite our investigation, no evidence was found that indicated the primary origin of the hepatocellular carcinoma. Four months later, the patient was admitted again because of spinal cord compression at the third and fourth thoracic vertebrae. Emergent decompressive laminectomy was performed and microscopic features revealed the same pathology as the initial chest wall mass resected 4 months earlier. After one year, a follow-up abdominal computed tomography （CT） still revealed no evidence of primary hepatocellular carcinoma.

关键词： Chest wall Hepatocellular carcinoma Metastasis

Myostatin gene role in regulating traits of poultry species for potential industrial applications

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 Animal Science and Biotechnology 2024年第5期15卷 1793-1801页

作者： Joonbum lee dong‑Hwan Kim Kichoon lee Department of Animal Sciences The Ohio State UniversityColumbusOH 43210USA

The myostatin(MSTN)gene is considered a potential genetic marker to improve economically important traits in live-stock,since the discovery of its function using the MSTN knockout *** anti-myogenic function of the MSTN gene was further demonstrated in farm animal species with natural or induced *** poultry species,myo-genesis in cell culture was regulated by modulation of the MSTN ***,different expression levels of the MSTN gene in poultry models with different muscle mass have been reported,indicating the conserved myogenic function of the MSTN gene between mammalian and avian *** advances of CRISPR/Cas9-mediated genome edit-ing techniques have led to development of genome-edited poultry species targeting the MSTN gene to clearly dem-onstrate its anti-myogenic function and further investigate other potential functions in poultry *** review summarizes research conducted to understand the function of the MSTN gene in various poultry models from cells to whole ***,the genome-edited poultry models targeting the MSTN gene are reviewed to inte-grate diverse effects of the MSTN gene on different traits of poultry species.

关键词： Chicken Economic traits Myostatin Quail

The association between C-reactive protein to albumin ratio and 6-month neurological outcome in patients with in-hospital cardiac arrest

在线全文

学校读者我要写书评

暂无评论

World Journal of Emergency Medicine 2024年第3期15卷 223-228页

作者： Ji Ho lee dong Hun lee Byung Kook lee Seok Jin Ryu Department of Emergency Medicine Chonnam National University HospitalGwangju 61469Republic of Korea Department of Emergency Medicine Chonnam National University Medical SchoolGwangju 61469Republic of Korea

The global incidence rates of in-hospital cardiac arrest(IHCA)range from1.2 to 9.0 per1,000 hospitalized patients,as per the National Cardiac Arrest Database.[1] While IHCAs tend to exhibit superior 30-day survival rates relative to out-of-hospital cardiac arrests (OHCA) due to situational advantages,such as immediate access to medical personnel and treatments.

关键词： patients cardiac IHC

Meta Shack–Hartmannwavefront sensor with large sampling density and large angular field of view:phase imaging of complex objects

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第9期13卷 1908-1918页

作者： Gi-Hyun Go dong-gu lee Jaeyeon Oh Gookho Song Doeon lee Mooseok Jang Department of Bio and Brain Engineering Korea Advanced Institute of Science and Technology(KAIST)DaejeonRepublic of Korea

Shack–Hartmann wavefront sensors measure the local slopes of an incoming wavefront based on the displacement of focal spots created by a lenslet array,serving as key components for adaptive optics for astronomical and biomedical ***,the challenges in increasing the density and the curvature of the lenslet have limited the use of such wavefront sensors in characterizing slowly varying wavefront ***,we develop a metasurfaceenhanced Shack–Hartmann wavefront sensor(meta SHWFS)to break this limit,considering the interplay between the lenslet parameters and the performance of *** experimentally validate the meta SHWFS with a sampling density of 5963 permm2 and a maximum acceptance angle of 8°which outperforms the traditional SFWFS by an order of ***,to the best of our knowledge,we demonstrate the first use of a wavefront sensing scheme in single-shot phase imaging of highly complex patterns,including biological tissue *** proposed approach opens up new opportunities in incorporating exceptional light manipulation capabilities of the metasurface platform in complex wavefront characterization.

关键词： angular curvature exceptional

In situ infrared, Raman and X-ray spectroscopy for the mechanistic understanding of hydrogen evolution reaction

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 Energy Chemistry 2024年第3期90卷 632-651,I0014页

作者： Andi Haryanto Kyounghoon Jung Chan Woo lee dong-Wan Kim Department of Chemistry Kookmin UniversitySeoul 02707Republic of Korea School of Civil Environmental and Architectural EngineeringKorea UniversitySeoul 02841Republic of Korea

Hydrogen production by water reduction reactions has received considerable attention because hydrogen is considered a clean-energy carrier,key for a sustainable energy *** methods have been widely used to study the reaction mechanism of the hydrogen evolution reaction(HER),but the calculation results need to be supported by experimental results and direct evidence to confirm the mechanistic *** this review,we discuss the fundamental principles of the in situ spectroscopic strategy and a theoretical model for a mechanistic understanding of the *** addition,we investigate recent studies by in situ Fourier transform infrared(FTIR),Raman spectroscopy,and X-ray absorption spectroscopy(XAS) and cover new findings that occur at the catalyst-electrolyte interface during *** spectroscopic strategies provide practical ways to elucidate catalyst phase,reaction intermediate,catalyst-electrolyte interface,intermediate binding energy,metal valency state,and coordination environment during HER.

关键词： Hydrogen evolution reaction Infrared spectroscopy Raman spectroscopy X-ray absorption spectroscopy Reaction mechanism

Atomically Adjustable Rhodium Catalyst Synthesis with Outstanding Mass Activity via Surface-Li mi ted Cation Exchange

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2024年第2期7卷 83-92页

作者： Hak Hyeon lee dong Su Kim Swagotom Sarker Ji hoon Choi Ho Seong lee Hyung Koun Cho Department of Advanced Materials Science&Engineering Sungkyunkwan University2066Seobu-roJangan-guSuwon-siGyeonggi-doSeoul 16419Korea Department of Advanced Materials Science&Engineering Kyungpook National University80Daehak-roBuk-guDaegu 41566Korea

Rh has been widely studied as a catalyst for the promising hydrazine oxidation reaction that can replace oxygen evolution reactions for boosting hydrogen production from hydrazine-containing *** Rh being expensive,only a few studies have examined its electrocatalytic mass ***,surface-limited cation exchange and electrochemical activation processes are designed to remarkably enhance the mass activity of *** atoms were readily replaced at the Ni sites on the surface of NiOOH electrodes by cation exchange,and the resulting RhooH compounds were activated by the electrochemical reduction *** cation exchange-derived Rh catalysts exhibited particle sizes not exceeding 2 nm without agglomeration,indicating a decrease in the number of inactive inner Rh ***,an improved mass activity of 30 A mg_(Rh)^(-1)was achieved at 0.4 V versus reversible hydrogen ***,the two-electrode system employing the same CE-derived Rh electrodes achieved overall hydrazine splitting over 36 h at a stable low *** proposed surface-limited CE process is an effective method for reducing inactive atoms of expensive noble metal catalysts.

关键词： cation exchange synthesis electrochemical metallization hydrazine oxidation reaction mass activity rhodium catalyst

Review on inorganic and polymeric materials-coordinated metal-organic-framework photocatalysts for green hydrogen evolution

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第5期92卷 322-356页

作者： dong-Eun lee Mohtaram Danish Umair Alam Wan-Kuen Jo School of Architecture CivilEnvironmental and Energy Engineering Kyungpook National University80 Daehak-roBuk-guDaegu 41566Republic of Korea School of Chemical Engineering Yeungnam UniversityGyeongsanGyeongbuk 38541Republic of Korea

Metal-organic frameworks(MOFs)possess a distinct advantage over conventional heterogeneous photocatalysts because of their carefully defined architecture and particular pores,which facilitate the targeted incorporation of other efficient cocatalysts or semiconductor *** integration of MOFs with other materials has resulted in significant breakthroughs,as the coupled materials improve the performance due to the combined *** unique MOF structures allow them to host foreign materials,which results in harvesting the visible region of the solar spectrum and effectively mitigating charge recombination by promoting charge *** review presents an evaluation of the latest developments in the utilization of surface and/or pore chemistry of MOF-supported heterojunctions for photocatalytic green-hydrogen generation with a basic understanding of the mechanism *** review begins with the basic principles of photocatalysis,the significance of MOFs,their optical properties,the methods used for synthesizing MOFs,and their coordination with other inorganic and polymeric ***,methods to increase photocatalytic H2 evolution using MOF-supported heterojunction have been proposed as standard ***,to address environmental challenges,we highlight the future potential of MOF-supported heterojunctions for use in green-energy *** hope that this review provides guidance to researchers in the development of effective heterojunctions based on MOFs to address challenges in energy applications and catalytic processes.

关键词： Renewable energy Environmental challenge Heterojunction Water splitting Photocatalysis

Enhancing Direct Electrochemical CO2 Electrolysis by Introducing A-Site Deficiency for the Dual-Phase Pr（Ca）Fe（Ni）O3-δ Cathode

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2024年第5期7卷 210-218页

作者： Wanhua Wang Haixia Li Ka-Young Park Taehee lee dong Ding Fanglin Chen Department of Mechanical Engineering University of South Carolina Energy & Environmental Science and Technology Idaho National Laboratory

High-temperature CO2electrolysis via solid oxide electrolysis cells (CO2-SOECs) has drawn special attention due to the high energy convention efficiency,fast electrode kinetics,and great potential in carbon ***,the development of cathode materials with high catalytic activity and chemical stability for pure CO2electrolysis is still a great *** this work,A-site cation deficient dual-phase material,namely(Pr0.4Ca0.6)xFe0.8Ni0.2O3-δ（PCFN,x=1,0.95,and 0.9）,has been designed as the fuel electrode for a pure CO2-SOEC,which presents superior electrochemical *** all these compositions,(Pr0.4Ca0.6)0.95Fe0.8Ni0.2O3-δ（PCFN95） exhibited the lowest polarization resistance of 0.458Ωcm2at open-circuit voltage and 800℃.The application of PCFN95 as the cathode in a single cell yields an impressive electrolysis current density of 1.76 A cm-2at 1.5 V and 800℃,which is76%higher than that of single cells with stoichiometric Pr0.4Ca0.6Fe0.8Ni0.2O3-δ（PCFN100） *** effects of A-site deficiency on materials'phase structure and physicochemical properties are also systematically *** an enhancement in electrochemical performance is attributed to the promotion of effective CO2adsorption,as well as the improved electrode kinetics resulting from the A-site deficiency.

关键词： A-site deficiency cathode material CO2 adsorption direct CO2 electrolysis solid oxide electrolysis cells