检索结果-南通市图书馆

局域功函数图像及其在Cu(111)-Au/Pd表面的应用

在线全文

学校读者我要写书评

暂无评论

物理学报 2005年第4期54卷 1523-1527页

作者：贾金锋董国材王立莉马旭村薛其坤 y.hasegawa T.Sakurai 中国科学院物理研究所北京100080 Institute for Materials Research Tohoku University Sendai 980-8577 Japan

用扫描隧道显微镜 (STM)对Cu(111) Au和Cu(111) Pd表面的局域功函数进行了研究 .通过测量隧道电流对针尖样品间距的响应 ,得到了与STM形貌图一一对应的表面局域功函数图像 .实验发现 ,Au Pd覆盖层和Cu衬底间的功函数有明显的不同 .Pd... 详细信息

用扫描隧道显微镜 (STM)对Cu(111) Au和Cu(111) Pd表面的局域功函数进行了研究 .通过测量隧道电流对针尖样品间距的响应 ,得到了与STM形貌图一一对应的表面局域功函数图像 .实验发现 ,Au Pd覆盖层和Cu衬底间的功函数有明显的不同 .Pd薄膜的功函数甚至超过了其体本征值 ,且功函数在台阶处变小 .用偶极子的形成解释了台阶处功函数的降低 .这一工作表明 ,用测量局域功函数的方法容易区分表面上不同的元素 ,并具有纳米尺度的空间分辨率 .

关键词：扫描隧道显微镜局域功函数 STM形貌图表面物理学

固态vander WaalsC _(60)膜晶格的Coulomb膨胀

在线全文

学校读者我要写书评

暂无评论

中国科学（A辑） 2000年第6期30卷 529-536页

作者：薛其坤厉建龙孙牧陆华 T.Hashizume y.Ling y.hasegawa K.Ohno Z.Q.Li y.Kawazoe T.Sakurai H.Kamiyama H.Shinohara 中国科学院表面物理国家重点实验室 Institute for Materials Research Aomori Public College Chemistry Department

利用扫描隧道显微镜观测到生长在GaAs(0 0 1 ) 2× 4表面上的固态vanderWaalsC6 0 膜在室温下较之C6 0 晶体具有 1 3%的晶格膨胀 .这种膨胀是由从GaAs衬底饱和的As悬挂键上转移到C6 0 分子上的电荷之间的Coulomb作用引起的 .理论计算表... 详细信息

利用扫描隧道显微镜观测到生长在GaAs(0 0 1 ) 2× 4表面上的固态vanderWaalsC6 0 膜在室温下较之C6 0 晶体具有 1 3%的晶格膨胀 .这种膨胀是由从GaAs衬底饱和的As悬挂键上转移到C6 0 分子上的电荷之间的Coulomb作用引起的 .理论计算表明 ,平均约有 1 76个电子转移到每个C6 0 分子上 .有趣的是 ,该固态C6 0 膜为 (1 1 0 )取向 ,这明显不同于生长于其他半导体或金属表面上的具有 (1 1 1 )取向的六角密排C6 0 膜 .这种反常取向的薄膜是由GaAs衬底的各向异性产生的一维限制作用导致的 .通过选择不同的衬底 ,可以控制C6 0

关键词：晶体生长分子束外延碳60膜晶格 Coulomb膨胀

Dendritic Learning-Incorporated Vision Transformer for Image Recognition

在线全文

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2024年第2期11卷 539-541页

作者： Zhiming Zhang Zhenyu Lei Masaaki Omura Hideyuki hasegawa Shangce Gao Faculty of Engineering University of ToyamaToyama-shi 930-8555Japan IEEE

Dear Editor,This letter proposes to integrate dendritic learnable network architecture with Vision Transformer to improve the accuracy of image *** this study,based on the theory of dendritic neurons in neuroscience,we design a network that is more practical for engineering to classify visual *** on this,we propose a dendritic learning-incorporated vision Transformer(DVT),which out-performs other state-of-the-art methods on three image recognition benchmarks.

关键词： Image network image

Stevens–Johnson syndrome and toxic epidermal necrolysis: Updates in pathophysiology and management

在线全文

学校读者我要写书评

暂无评论

中华医学杂志(英文版) 2024年第19期137卷 2024 Sep 5页

作者： hasegawa Akito Abe Riichiro Division of Dermatology Niigata University Graduate School of Medical and Dental Sciences Niigata-8510 Japan

Stevens–Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are life-threatening conditions characterized by extensive detachment of the epidermis and mucous membranes. These severe disorders carry a high mortality rate, and their pathogenesis remains largely unclear. Furthermore, optimal therapeutic strategies for SJS/TEN remain a subject of ongoing debate. Early diagnosis of SJS/TEN is challenging, and reliable biomarkers for diagnosis or severity prediction have not been firmly established. Certain drugs, such as carbamazepine and allopurinol, have shown a strong association with specific human leukocyte antigen (HLA) types. Recently, the potential benefits of HLA screening prior to administering these drugs to reduce the incidence of SJS/TEN have been explored. Epidermal cell death in SJS/TEN lesions is caused by extensive apoptosis, primarily through the Fas–Fas ligand (FasL) and perforin/granzyme pathways. Our findings suggest that necroptosis, a form of programmed necrosis, also contributes to epidermal cell death. Annexin A1, released from monocytes, interacts with the formyl peptide receptor 1 to induce necroptosis. Several biomarkers, such as CC chemokine ligand (CCL)-27, interleukin-15, galectin-7, receptor-interacting protein kinases 3 (RIP3), and lipocalin-2, have been identified for diagnostic and prognostic purposes in SJS/TEN. Supportive care is recommended for treating SJS/TEN, but the efficacy of various therapeutic options–including systemic corticosteroids, intravenous immunoglobulin, cyclosporine, and tumor necrosis factor-α antagonists–remains controversial. Recent studies have investigated the potential benefits of tumor necrosis factor-α antagonists. In this review, we discuss recent advances in the understanding and management of SJS/TEN.

关键词： Stevens-Johnson syndrome Toxic epidermal necrolysis Necroptosis Apoptosis

Update on the Diagnosis and Treatment of Combined Hepatocellular Cholangiocarcinoma

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Clinical and Translational Hepatology 2024年第2期12卷 210-217页

作者： Kai-Jian Chu yoshikuni Kawaguchi Han Wang Xiao-Qing Jiang Kiyoshi hasegawa Biliary Surgical Department No.1 Eastern Hepatobiliary Surgical HospitalThe Naval Medical UniversityShanghaiChina Hepato-Biliary-Pancreatic Surgery Division Department of SurgeryGraduate School of MedicineThe University of TokyoTokyoJapan Department of Pathology Eastern Hepatobiliary Surgical HospitalThe Naval Medical UniversityShanghaiChina

Combined hepatocellular-cholangiocarcinoma(cHCC-CCA)is a unique type of liver tumor that contains both hepatocellular carcinoma and cholangiocarcinoma components within a single *** fifth edition of the World Health Organization classification provides a definition and diagnostic criteria for ***,the heterogeneous histomorphology and presentation resulting from variation of the proportion of each component poses challenges for clinical diagnosis and treatment.A diagnosis of cHCC-CCA may be suggested by the synchronous elevation of serum tumor markers for hepatocellular carcinoma and cholangiocarcinoma,a mixed enhancement pattern on imaging,and a discrepancy between the elevation of tumor marker and the imaging enhancement *** examination using hematoxylin and eosin staining is considered the gold standard for diagnosing cHCC-CCA,and comprehensive examination of resection or biopsy specimens is crucial for an accurate ***,there is no standard treatment for cHCC-CCA,and surgery is the *** hepatectomy with lymphadenectomy is among the recommended surgical *** role of liver transplantation in the management of cHCC-CCA is still *** chemoembolization may be effective for unresectable cHCC-CCA,particularly for hypervascular ***,the available evidence does not support systemic therapy for advanced *** prognosis of cHCC-CCA is generally poor,and there is no established staging *** research is needed to better understand the histogenesis and clinical management of *** review provides an overview of the current literature on cHCC-CCA with a focus on its clinical characteristics,pathological diagnosis,and management.

关键词： Combined hepatocellular-cholangiocarcinoma Clinical characteristics Imaging characteristics Pathological diagnosis Treatment

Dynamic ultrasonography for optimizing treatment position in superior mesenteric artery syndrome:Two case reports and review of literature

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

World Journal of Gastroenterology 2024年第5期30卷 499-508页

作者： Nobuaki hasegawa Akihiko Oka Muyiwa Awoniyi yuri yoshida Hiroshi Tobita Norihisa Ishimura Shunji Ishihara Department of Internal Medicine II Shimane University Faculty of MedicineIzumo 693-8501ShimaneJapan Department of Gastroenterology Hepatology and NutritionDigestive Disease and Surgery InstituteHepatology SectionCleveland ClinicClevelandOH 44195United States Clinical Laboratory Division Shimane University HospitalIzumo 693-8501ShimaneJapan Division of Hepatology Shimane University HospitalIzumo 693-8501Japan

BACKGROUND Superior mesenteric artery(SMA)syndrome is a rare cause of duodenal obstruction by extrinsic compression between the SMA and the aorta(SMA-Ao).Although the left lateral recumbent position is considered effective in the treatment of SMA syndrome,individual variations in the optimal patient position have been *** this report,we present two elderly cases of SMA syndrome that exhibited rapid recovery due to ultrasonographic dynamic evaluation of the optimal position for each *** SUMMARy Case 1:A 90-year-old man with nausea and *** diagnosis of SMA syndrome by computed tomography(CT),ultrasonography(US)revealed the SMA-Ao distance in the supine position(4 mm),which slightly improved in the lateral position(5.7–7.0 mm)without the passage of duodenal ***,in the sitting position,the SMA-Ao distance was increased to 15 mm accompanied by improved content ***,US indicated enhanced passage upon abdominal massage on the right *** day 2,the patient could eat comfortably with the optimal position and *** 2:An 87-year-old woman with *** the diagnosis of SMA syndrome and aspiration pneumonia by CT,dynamic US confirmed the optimal position(SMA-Ao distance was improved to 7 mm in forward-bent position,whereas it remained at 5 mm in the supine position).By day 7 when her pneumonia recovered,she could eat with the optimal *** The optimal position for SMA syndrome varies among *** US appears to be a valuable tool in improving patient outcomes.

关键词： Superior mesenteric artery syndrome Wilkie’s syndrome Cast syndrome Aorto-mesenteric compass syndrome Ultrasonography Case report

High-temperature corrosion of sintered RE_(2)Si_(2)O_(7)(RE=yb and Ho)environmental barrier coating materials by volcanic ash

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

International Journal of Minerals,Metallurgy and Materials 2024年第7期31卷 1628-1638页

作者： Ayahisa Okawa Son Thanh Nguyen Tadachika Nakayama Thi-Mai-Dung Do Hisayuki Suematsu Shu yin Takuya hasegawa Tsuneo Suzuki Takashi Goto Koichi Niihara Institute of Multidisciplinary Research for Advanced Materials Tohoku UniversitySendai 980-8577Japan Department of Creative Engineering National Institute of TechnologyKushiro 084-0916Japan Extreme Energy-Density Research Institute Nagaoka University of TechnologyNagaoka 940-2188Japan Advanced Institute for Materials Research(WPI-AIMR) Tohoku UniversitySendai 980-8577Japan

Rare-earth silicates are promising environmental barrier coatings(EBCs)that can protect SiC_(f)/Si C_(m)substrates in next-genera tion gas turbine ***,RE_(2)Si_(2)O_(7)(RE=yb and Ho)shows potential as an EBC due to its coefficient of thermal expansion(CTE)compatible with substrates and high resistance to water vapor *** target operating temperature for next-generation tur bine blades is 1400°*** is inevitable during adhesion to molten volcanic ash,and thus,understanding the corrosion behavior o the material is crucial to its *** study investigates the high-temperature corrosion behavior of sintered RE_(2)Si_(2)O_(7)(RE=yb and Ho).Samples were prepared using a solid-state reaction and hot-press *** were then exposed to volcanic ash at 1400°C for 224,and 48 *** 48 h of exposure,volcanic ash did not react with yb_(2)Si_(2)O_(7)but penetrated its interior,causing *** Ho_(2)Si_(2)O_(7)was partially dissolved in the molten volcanic ash,forming a reaction zone that prevented volcanic ash melts from penetrating the *** increasing heat treatment time,the reaction zone expanded,and the thickness of the acicular apatite grains increased The Ca:Si ratios in the residual volcanic ash were mostly unchanged for yb_(2)Si_(2)O_(7)but decreased considerably over time for Ho_(2)Si_(2)O_(7).Th Ca in volcanic ash was consumed and formed apatite,indicating that RE^(3+)ions with large ionic radii(Ho>yb)easily precipitated apatit from the volcanic ash.

关键词： environmental barrier coating volcanic ash rare-earth disilicate corrosion

导管内注射无水乙醇对多囊肾增大的有症状病人进行动脉栓塞

在线全文

学校读者我要写书评

暂无评论

国际医学放射学杂志 2015年第6期 591-591页

作者： y.Sakuhara S.Nishio K.Morita D.Abo y.hasegawa N.yuasa 于静 Department of Diagnostic and Interventional Radiology Hokkaido University Hospital

摘要目的经导管注射无水乙醇进行动脉栓塞(TAE),评估其应用于增大的多囊肾病有症状病人的安全性及有效性。方法本研究为前瞻性实验,获得了机构伦理委员会批

关键词：多囊肾 TAE 无水乙醇病人动脉栓塞

Severe aconite poisoning successfully treated with veno-arterial extracorporeal membrane oxygenation:A case report

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2024年第2期12卷 399-404页

作者： Saeko Kohara yoshito Kamijo Ryoko Kyan Ichiro Okada Eiju hasegawa Soichiro yamada Koichi Imai Asuka Kaizaki-Mitsumoto Satoshi Numazawa Department of Critical Care Medicine and Trauma National Hospital Organization Disaster Medical CenterTokyo 1900014Japan Department of Clinical Toxicology Saitama Medical UniversitySaitama 3500495Japan Saitama Prefectural Institute of Public Health Saitama Prefectural Institute of Public HealthSaitama 3550133Japan Division of Toxicology Department of PharmacologyToxicology and TherapeuticsShowa University School of PharmacyTokyo 1428555Japan

BACKGROUND Most species of aconite contain highly toxic aconitines,the oral ingestion of which can be fatal,primarily because they cause ventricular *** describe a case of severe aconite poisoning that was successfully treated through venoarterial extracorporeal membrane oxygenation(VA-ECMO)and in which detailed toxicological analyses of the aconite roots and biological samples were performed using liquid chromatography-tandem mass spectrometry(LC-MS/MS).CASE SUMMARy A 23-year-old male presented to the emergency room with circulatory collapse and ventricular arrhythmia after ingesting approximately half of a root labeled,“Aconitum japonicum Thunb”.Two hours after arrival,VA-ECMO was initiated as circulatory collapse became refractory to antiarrhythmics and *** hours after arrival,an electrocardiogram revealed a return to sinus *** patient was weaned off VA-ECMO and the ventilator on hospital days 3 and 5,*** hospital day 15,he was transferred to a psychiatric *** other half of the root and his biological samples were toxicologically analyzed using LC-MS/MS,revealing 244.3 mg/kg of aconitine and 24.7 mg/kg of mesaconitine in the *** on admission contained 1.50 ng/mL of *** hospital day 2,neither were *** on admission showed 149.09 ng/mL of aconitine and 3.59 ng/mL of mesaconitine,but these rapidly decreased after hospital day *** The key to saving the life of a patient with severe aconite poisoning is to introduce VA-ECMO as soon as possible.

关键词： Aconite poisoning Fatal arrhythmia Veno-arterial extracorporeal membrane oxygenation Aconitine Mesaconitine Case report