维普中文期刊产品整合服务
3522篇 您的检索式:作者名="Okuda"
    题名 作者 年代 出处 被引量
1北京大气颗粒物污染的区域性本质显示文摘颗粒物是北京的首要大气污染物,2006年PM10年均浓度超标60%以上.本研究基于颗粒物质量浓度在线监测和逐日TSP的采样分析,结合地面天气形势,论述了北京大气颗粒物污染的区域性特征.首先,北京大气颗粒物污染过程的形成由以冷锋过境为明显标志的周期性的天气系统决定,天气系统的活动尺度决定了颗粒物污染的区域性.其次,从PM2.5/PM10和Pb/Al比值的变化判别出颗粒物污染过程中随着颗粒物浓度的升高,细颗粒物呈现富集趋势;细颗粒物的富集由粗颗粒物的去除和超细颗粒物的生成(核化过程)、以及二次颗粒物的生成所致;污染过程中颗粒物的老化以及化学组成(Pb/Al)的大幅度变化共同表明了北京大气颗粒物来源的区域性本质.贺克斌 贾英韬 马永亮 雷宇 赵晴 TANAKA Shigeru OKUDA Tomoaki 2009环境科学学报2009,29,3:86
2Nonalcoholic fatty liver disease is a novel predictor of cardiovascular disease显示文摘AIM:To clarify whether nonalcoholic fatty liver disease(NAFLD)increases the risk of cardiovascular disease.METHODS:We carried out a prospective observational study with a total of 1637 apparently healthy Japanese men and women who were recruited from a health check-up program.NAFLD was diagnosed by abdominal ultrasonography.The metabolic syndrome(MS)was defined according to the modified National Cholesterol Education Program(NCEP)ATP Ⅲ criteria.Five years after the baseline evaluations,the incidence of cardiovascular disease was assessed by a self-administered questionnaire.RESULTS:Among 1221 participants available for outcome analyses,the incidence of cardiovascular disease was higher in 231 subjects with NAFLD at baseline(5 coronary heart disease,6 ischemic stroke,and 1 cerebral hemorrhage)than 990 subjects without NAFLD(3 coronary heart disease,6 ischemic stroke,and 1 cerebral hemorrhage).Multivariate analyses indicated that NAFLD was a predictor of cardiovascular disease independent of conventional risk factors(odds ratio 4.12,95% CI,1.58 to 10.75,P = 0.004).MS was alsoindependently associated with cardiovascular events.But simultaneous inclusion of NAFLD and MS in a multivariate model revealed that NAFLD but not MS retained a statistically significant correlation with cardiovascular disease.CONCLUSION:Although both of them were predictors of cardiovascular disease,NAFLD but not MS retained a statistically significant correlation with cardiovascular disease in a multivariate model.NAFLD is a strong predictor of cardiovascular disease and may play a central role in the cardiovascular risk of MS.Masahide Hamaguchi Takao Kojima Noriyuki Takeda Chisato Nagata Jun Takeda Hiroshi Sarui Yutaka Kawahito Naohisa Yoshida Atsushi Suetsugu Takahiro Kato Junichi Okuda Kazunori Ida Toshikazu Yoshikawa 2007World Journal of Gastroenterology2007,13,10:55
3Intraductal neoplasm of the intrahepatic bile duct: Clinicopathological study of 24 cases显示文摘AIM: To investigate the clinicopathological features of intraductal neoplasm of the intrahepatic bile duct (INihB). METHODS: Clinicopathological features of 24 cases of INihB, which were previously diagnosed as biliary papillomatosis or intraductal growth of intrahepatic biliary neoplasm, were reviewed. Mucin immunohistochemistry was performed for mucin (MUC)1, MUC2, MUC5AC and MUC6. Ki-67, P53 and β-catenin immunoreactivity were also examined. We categorized each tumor as adenoma (low grade), borderline (intermediate grade), and malignant (carcinoma in situ , high grade including tumors with microinvasion). RESULTS: Among 24 cases of INihB, we identified 24 tumors. Twenty of 24 tumors (83%) were composed of a papillary structure; the same feature observed in intraductal papillary neoplasm of the bile duct (IPNB). In contrast, the remaining four tumors (17%) showed both tubular and papillary structures. In three of the four tumors (75%), macroscopic mucin secretion was limited but microscopic intracellular mucin was evident. Histologically, 16 tumors (67%) were malignant, three (12%) were borderline, and five (21%) were adenoma. Microinvasion was found in four cases (17%). Immunohistochemical analysis revealed that MUC1 was not expressed in the borderline/adenoma group but was expressed only in malignant lesions (P = 0.0095). Ki-67 labeling index (LI) was significantly higher in the malignant group than in the borderline/adenoma group (22.2 ± 15.5 vs 7.5 ± 6.3, P < 0.01). In the 16 malignant cases, expression of MUC5AC showed borderline significant association with high Ki-67 LI (P = 0.0622). Nuclear expression of β-catenin was observed in two (8%) of the 24 tumors, and these two tumors also showed MUC1 expression. P53 was negative in all tumors. CONCLUSION: Some cases of INihB have a tubular structure, and are subcategorized as IPNB with tubular structure. MUC1 expression in INihB correlates positively with degree of malignancy.Yoshiki Naito Hironori Kusano Osamu Nakashima Eiji Sadashima Satoshi Hattori Tomoki Taira Akihiko Kawahara Yoshinobu Okabe Kazuhide Shimamatsu Jun Taguchi Seiya Momosaki Koji Irie Rin Yamaguchi Hiroshi Yokomizo Michiko Nagamine Seiji Fukuda Shinichi Sugiyama Naoyo Nishida Koichi Higaki Munehiro Yoshitomi Masafumi Yasunaga Koji Okuda Hisafumi Kinoshita Masayoshi Kage Masamichi Nakayama Makiko Yasumoto Jun Akiba Hirohisa Yano 2012World Journal of Gastroenterology2012,18,28:16
4Comparative study: Vonoprazan and proton pump inhibitors in Helicobacter pylori eradication therapy显示文摘AIM To compare the effectiveness and safety of vonoprazan-based therapy with proton pump inhibitor(PPI)-based therapies to treat Helicobacter pylori(H. pylori).METHODS We retrospectively analysed data from first-line(vonoprazan or PPI with 200 mg clarithromycin and 750 mg amoxicillin twice daily for 7 d)(n = 1353) and second-line(vonoprazan or PPI with 250 mg metronidazole and 750 mg amoxicillin twice daily for 7 d)(n = 261) eradication treatments for H. pylori- positive patients with associated gastrointestinal diseases from April 2014 to December 2015 at Hattori Clinic, Japan. The primary endpoint was the eradication rate, which was assessed with a full analysis set. The secondary endpoints were adverse events and related factors.RESULTS After the first-line treatments, the eradication rates for vonoprazan, esomeprazol, rabeprazole, and lansoprazole were 87.9%(95%CI: 84.9%-90.5%), 71.6%(95%CI: 67.5%-75.5%), 62.9%(95%CI: 52.0%-72.9%), and 57.3%(95%CI: 50.4%-64.1%), respectively. The vonoprazan eradication rate was significantly higher than that of the PPIs(P < 0.01). Interestingly, smoking did not affect the H. pylori eradication rate in the vonoprazan group(P = 0.34), whereas it decreased the rates in the PPI groups(P = 0.013). The incidence of adverse events in the vonop-razan group was not different from the PPI group(P = 0.054), although the vonoprazan group exhibited a wider range of adverse events. Vonoprazan-based triple therapy was highly effective as a second-line treatment, with an eradication rate similar to that of PPI-based therapy.CONCLUSION Vonoprazan might be superior to PPIs in first-line H. pylori therapy, particularly for smokers. However, caution is required due to possible adverse events.Kouichi Sakurai Hiroko Suda Yumi Ido Takayuki Takeichi Ayako Okuda Kiwamu Hasuda Masahiro Hattori 2017World Journal of Gastroenterology2017,23,4:16
5Natural history of chronic hepatitis C in patients on hemodialysis: Case control study with 4-23 years of follow-up显示文摘AIM: Hepatitis C virus (HCV) infection is very common among end-stage kidney disease patients on hemodialysis, but its natural history is not known.METHODS: In this study, 189 dialysis patients (case) positive for HCV antibodies who were followed up for more than 4 years were compared with twice as many sex/age matched controls with chronic hepatitis C who were diagnosed in the same month as the case and followed up for comparableperiods. The longest follow-up was 23 years in dialysis cases.The disease activities were graded into 'asymptomatic' if ALT was less than 40 (35 in cases) IU/L, 'low activities' if ALT was 40 (35)-79 IU/L, and 'high activities' if ALT was above 80 IU/L during the last or latest 4 year period.RESULTS: All 25 dialysis cases who were followed up for more than 15 years were asymptomatic and 15 of them were negative for HCV RNA. Of the 50 controls followed up for more than 15 years, 34 had high acvities, and none deared HCV RNA. There were 60 controls who were asymptomatic,but they were all positive for HCV RNA, while 22.3% of asymptomatic dialysis cases were RNA negative. No dialysispatients with chronic hepatitis C progressed to cirrhosis,whereas the disease progressed to cirrhosis in more thanone quarter of the controls. These differences were highlysignificant (P<0.0001).CONCLUSION: Chronic hepatitic C among hemodialysispatients is mild in disease activity, and is not progressive,perhaps due to immunological abnormalities in these patients.Hepatic C virus is frequently cleared in asymptomatic dialysispatients during a long course. A possible mechanism forviral clearance is viral particle destruction on the surface ofthe dialyzer membrane.Kunio Okuda Osamu Yokosuka 2004World Journal of Gastroenterology2004,10,15:14
6以低阶煤及生物质热溶萃取物为前驱体制备炭纤维(英文)显示文摘采用热溶剂萃取法从低阶煤和生物质废弃物中获得了一种萃取物,此萃取物收率高达61%,在100℃左右开始软化。然后以此萃取物为前驱体,通过热熔纺丝-有机溶剂处理-缓慢氧化-炭化的方法制得了炭纤维。通过元素分析、傅里叶变换红外光谱(FTIR)、电子显微镜(SEM)等对炭纤维的形貌结构、物相组成等进行了表征分析,结果表明此炭纤维的基本性质与商业炭纤维相似。本方法是一种具有一定实际可行性的炭纤维制备新途径。李显 朱贤青 Kenshiro Okuda 张宗 Ryuichi Ashida 姚洪 Kouichi Miura 2017新型炭材料2017,32,1:10
7Mass Concentration and Mineralogical Characteristics of Aerosol Particles Collected at Dunhuang During ACE-Asia显示文摘大小在春天 2001 和 2002 被执行在 Dunhuang 的中国荒芜的区域决定土壤灰尘的特征,亚太地区性的喷雾器描述的扎根的地点之一试验(王牌亚洲) 。全部的推迟的粒子物质的吝啬的集体集中在 2001 和 2002 的春天期间是 317 μ g m^(-3) 和 307 μ g m^(-3), 分别地。十一个尘暴事件与 1095 μ g m~ 的吝啬的喷雾器集中被观察(-3), 当有平静或弱的风速的非尘封的天有一个背景喷雾器 196 μ g m~ 装载时(-3) 平均在春季。X 光检查衍射在喷雾器样品检测的主要矿物质是伊利石,高岭石,绿泥石,石英,长石,方解石和白云石。石膏,岩盐和闪石也在一些样品被检测。矿物学的数据也证明亚洲灰尘被高岭石描绘到而 Saharan 灰尘展出比 2 大的 K/C 比率,比率比 1 降低的绿泥石(K/C ) 。小径的三个家庭与喷雾器粒子运输 toDunhuang 被联系,但是这些有的气团 back-trajectoryanalysis 表演类似的 K/C 比率,它进一步证明亚洲灰尘的矿物学的特征与非洲人不同清扫。沈振兴 曹军骥 李旭祥 Tomoaki OKUDA 王亚强 张小曳 2006Advances in Atmospheric Sciences2006,23,2:9
8Influence of proton pump inhibitor treatment on Helicobacter pylori stool antigen test显示文摘AIM: To investigate the effects of proton pump inhibitor (PPI) treatment on stool antigen test using the TestMate pylori enzyme immunoassay. METHODS: This study assessed 28 patients [16 men and 12 women; mean age (63.1 ± 5.9) years; range, 25-84 years] who underwent stool antigen test and urea breath test (UBT) before and after PPI administration. RESULTS: Using the UBT as the standard, the sensitivity, specif icity and agreement of the stool antigen test in all 28 patients were 95.2%, 71.4%, and 89.3%, respectively, before PPI administration, and 88.9%, 90.9%, and 89.3%, respectively, after PPI treatment. Mean UBT values were 23.98% ± 5.33% before and 16.19% ± 4.75% after PPI treatment and, in 15 patients treated for ≥ 4 wk, were signif icantly lower after than before 4 wk of PPI treatment (12.58% ± 4.49% vs 24.53% ± 8.53%, P = 0.048). The mean optical density (A450/630) ratios on the stool antigen test were 1.16 ± 0.20 before and 1.17 ± 0.24 after PPI treatment (P = 0.989), and were 1.02 ± 0.26 and 0.69 ± 0.28, respectively, in the group treated for > 4 wk (P = 0.099).Masaaki Kodama Kazunari Murakami Tadayoshi Okimoto Yoshihiro Fukuda Tadashi Shimoyama Masumi Okuda Chieko Kato Intetsu Kobayashi Toshio Fujioka 2012World Journal of Gastroenterology2012,18,1:7
9药用植物的活性成分:鞣花鞣质显示文摘随着对鞣质特别是鞣花鞣质(Ellagitannins)的分离、结构测定和各种生理活性的深入了解,使得实际具有生理活性的鞣质其原有的概念已发生了明显变化。本文根据鞣质结构的差别讨论其生理活性,如几种低聚鞣花鞣质的抗肿瘤作用和抗人类免疫缺陷病毒(Anti-HIV)作用。鞣花鞣质比相似结构的其他类型的鞣质具有更强的抗脂质过氧化作用。其他的生理活性还有:抑制致癌物的诱变和抑制肿瘤发展。Okuda T 郭澄 1990国外医药(植物药分册)1990,5,2:6
10Hypoxia-inducible factor 1 alpha and vascular endothelial growth factor overexpression in ischemic colitis显示文摘AIM: To examine the etiology and pathophysiology in human ischemic colitis from the viewpoint of ischemic favors such as hypoxia-inducible factor 1 alpha (HIF-1alpha and vascular endothelial growth factor (VEGF).METHODS: Thirteen patients with ischemic colitis and 21 normal controls underwent colonoscopy. The follow-up colonoscopy was performed in 8 patients at 7 to 10 d after theoccurrence of ischemic colitis. Biopsy samples were subjected to real-time RT-PCR and immunohistochemistry to detect the expression of HIF-1 alpha and VEGF.RESULTS: HIF-1 alpha and VEGF expression were found in the normal colon tissues by RT-PCR and immunohistochemistry.HIF-1 alpha and VEGF were overexpressed in the lesions of ischemic colitis. Overexpressed HIF-1 alpha and VEGF RNA quickly decreased to the normal level in the scar regions at 7 to 10 d after the occurrence of ischemic colitis.CONCLUSION: Constant expression of HIF-1 alpha and VEGF in normal human colon tissue suggested that HIF-1alpha and VEGF play an important role in maintaining tissue integrity. We confirmed the ischemic crisis in ischemic colitis at the molecular level, demonstrating overexpression of HIF-1 alpha and VEGF in ischemic lesions. These ischemic factors may play an important role in the pathophysiology of ischemic colitis.Tomoyuki Okuda Takeshi Azuma Masahiro Ohtani Ryuho Masaki Yoshiyuki Ito Yukinao Yamazaki Shigeji Ito Masaru Kuriyama 2005World Journal of Gastroenterology2005,11,10:5
11Pseudomembranous colitis presenting as acute colonic obstruction without diarrhea in a patient with gastric Burkitt lymphoma显示文摘Pseudomembranous colitis (PMC) usually manifests asfever and diarrhea in hospitalized patients treated withsystemic antibiotics. We described a case of PMC withintestinal obstruction but without diarrhea. A 60-yearold man was hospitalized for chemotherapy for the treatment of Burkitt lymphoma of the stomach. The patient became febrile and complained of crampy abdominal pain during the post-chemotherapy nadir. Plain abdominal radiography showed some intestinal gas and niveau. Because stool cytotoxin assay for clostridium difficile was positive and colon fiberscopic examination showed a pseudomembrane at the left side of the colon,and a diagnosis of PMC was made. Treatment with intracolonic vancomycin administration by colonoscopy and nasoileus tube was successful. Physicians should take into account the possibility of bowel obstruction due to PMC occurring in patients undergoing chemotherapy and perform emergency colonoscopy examination of suspected cases.Kenichi Nomura Kohei Fukumoto Daisuke Shimizu Takashi Okuda Naohisa Yoshida Yuri Kamitsuji Yosuke Matsumoto Hideyuki Konishi Yuji Ueda Shigeo Horiike Takeshi Okanoue Masafumi Taniwaki 2005World Journal of Gastroenterology2005,11,17:5
12Recurrent chromosomal rearrangements at bands 8q24 and 11q13 in gastric cancer as detected by multicolor spectral karyotyping显示文摘AIM: To identify chromosomal translocations specific to gastric cancer (GC), spectral karyotyping (SKY) analysis was performed on established cell lines and cancerous ascitic fluids.METHODS: SKY analysis of 10 established cell lines and seven cancerous ascitic fluid samples identified recurrent chromosomal breakpoints and translocations in GC,several of which involved chromosomal loci of oncogenes or tumor suppressor genes.RESULTS: A total of 630 chromosomal breaks were identified. Chromosome no.8 was the most frequently involved in rearrangements (65 breaks), followed by chromosomes no. 11 (53), no. 1 (49), no. 7 (46), no. 13 (37), no. 3 (36), no. 17 (33), and no. 20 (29). Frequent breakpoints were detected in 8q24.1 (30 breaks), 11q13 (29), 13q14 (16), 20q11.2 (14), 7q32 (13), 17q11.2 (13),18q21 (12), 17q23 (9), 18q11.2 (9). SKY analysis identified a total of 242 chromosomal rearrangements including 190 reciprocal and non-reciprocal translocations. The recurrent combinations of chromosomal bands involved in translocations were 8q24.1 and 13q14 (3 cases), 8q24.1 and 11q13 (3), 11q13 and 17q11.2 (2), and 18q11.2 and 20q11.2 (2). Our study validated the ability of SKY to characterize in detail the chromosomal rearrangements in solid tumors and derived cell lines. Moreover,fluorescence in situ hybridization helped to identify the insertions, translocations, and homogeneously staining regions of MYCand CCND1 gene loci.CONCLUSION: The non-random co-localization of certain cytogenetic bands suggests the importance of chromosomal translocations in gastric carcinogenesis, by serving as landmarks for the cloning of GC causing genes.Yasuhide Yamashita Kazuhiro Nishida Takashi Okuda Kenichi Nomura Yosuke Matsumoto Shoji Mitsufuji Shigeo Horiike Hiroyuki Hata Chohei Sakakura Akio Hagiwara Hisakazu Yamagishi Masafumi Taniwaki 2005World Journal of Gastroenterology2005,11,33:4
13Obliterative hepatocavopathy-inferior vena cava thrombosis at its hepatic portion显示文摘Budd-Chiari syndrome was formerly described as he-patic vein thrombosis within the liver, but it now in-cludes inferior vena cava (IVC) thrombosis and oth-er conditions that cause hepatic vein outflow obstruc-tion. The author consider that primary hepaticvein thrombosis and primary IVC thrombosis repre-sent two different clinical disorders.Kunio Okuda 2002Hepatobiliary & Pancreatic Diseases International2002,1,4:4
14Stochastic analysis of laminated composite plate considering stochastic homogenization problem显示文摘This paper discusses a multiscale stochastic analysis of a laminated composite plate consisting of unidirectional fiber reinforced composite laminae. In particular, influence of a microscopic random variation of the elastic properties of component materials on mechanical properties of the laminated plate is investigated. Laminated composites are widely used in civil engineering, and therefore multiscale stochastic analysis of laminated composites should be performed for reliability evaluation of a composite civil structure. This study deals with the stochastic response of a laminated composite plate against the microscopic random variation in addition to a random variation of fiber orientation in each lamina, and stochastic properties of the mechanical responses of the laminated plate is investigated. Halpin-Tsai formula and the homogenization theory-based finite element analysis are employed for estimation of effective elastic properties of lamina, and the classical laminate theory is employed for analysis of a laminated plate. The Monte-Carlo simulation and the first-order second moment method with sensitivity analysis are employed for the stochastic analysis. From the numerical results, importance of the multiscale stochastic analysis for reliability evaluation of a laminated composite structure and applicability of the sensitivity-based approach are discussed.S. SAKATA K. OKUDA K. IKEDA 2015Frontiers of Structural and Civil Engineering2015,9,2:4
15经自然腔道取标本手术(NOSES)治疗结直肠癌的国际共识显示文摘近年来,经自然腔道取标本手术(NOSES)治疗结直肠癌已引起了广泛关注。NOSES应用于结直肠手术的潜在优势包括减轻术后疼痛,减少伤口并发症,减少对术后镇痛的需求,加快肠道功能的恢复,缩短住院时间,更好的美容效果,以及给患者带来了更佳的心理状态。尽管NOSES的手术创伤显著减轻,然而该技术也存在一些潜在问题。尤其随着这项新技术的兴起,人们对其无菌的把控、肿瘤学结果和病例选择等问题表示出关切。因此,迫切需要一部操作指南来规范NOSES手术在结直肠癌中的开展。经过国际NOSES联盟全体成员的三轮讨论,最终形成了该部共识。这一共识有助于NOSES在全球范围内的长远发展。Xu Guan Zheng Liu Antonio Longo Jian-Chun Cai William Tzu-Liang Chen Lu-Chuan Chen Ho-Kyung Chun Joaquim Manuel da Costa Pereira Sergey Efetov Ricardo Escalante Qing-Si He Jun-Hong Hu Cuneyt Kayaalp Seon-Hahn Kim Jim S.Khan Li-Jen Kuo Atsushi Nishimura Fernanda Nogueira Junji Okuda Avanish Saklani Ali A.Shafik Ming-Yin Shen Jung-Tack Son Jun-Min Song Dong-Hui Sun Keisuke Uehara Gui-Yu Wang Ye Wei Zhi-Guo Xiong Hong-Liang Yao Gang Yu Shao-Jun Yu Hai-Tao Zhou Suk-Hwan Lee Petr V.Tsarkov Chuan-Gang Fu Xi-Shan Wang The International Alliance of NOSES 2019Gastroenterology Report2019,7,1:3
16Hemobilia due to hepatocellular carcinoma: cholangioscopicfindings and novel endoscopic hemostasis显示文摘To the Editor:Trauma,inflammation,iatrogenic procedures such as liver biopsy and percutaneous transhepatic biliary drainage(PTBD),vascular anomalies,coagulopathy status,and malignancy can cause hemobilia[1].Malignant causes of hemobilia include cholangiocarcinoma,pancreatic cancer,gallbladder tumor,and liver metastasis,but rarely hepatocellular carcinoma(HCC).Here,we describe achieving endoscopic hemostasis for hemobilia caused by HCC,which was visualized using the single-operator,SPY-DS cholangioscope(Boston Scientific,Tokyo,Japan)under endoscopictakeshi ogura atsushi okuda kazuhide higuchi 2018Hepatobiliary & Pancreatic Diseases International2018,17,3:3
17Surgically treated diaphragmatic perforation after radiofrequency ablation for hepatocellular carcinoma显示文摘We review 6 cases of diaphragmatic perforation, with and without herniation, treated in our institution. All patients with diaphragmatic perforation underwent radiofrequency ablation(RFA) treatments for hepatocellular carcinoma(HCC) performed at Kurume University Hospital and Tobata Kyoritsu Hospital. We investigated the clinical profiles of the 6 patients between January 2003 and December 2013. We further describe the clinical presentation, diagnosis, and treatment of diaphragmatic perforation. The change in the volume of liver and the change in the Child-Pugh score from just after the RFA to the onset of perforation was evaluated using a paired t-test. At the time of perforation, 4 patients had herniation of the viscera, while the other 2 patients had no herniation. The majority of ablated tumors were located adjacent to the diaphragm, in segments 4, 6, and 8. The average interval from RFA to the onset of perforation was 12.8 mo(range, 6-21 mo). The median Child-Pugh score at the onset of perforation(8.2) was significantly higher compared to the median Child-Pugh score just after RFA(6.5)(P = 0.031). All patients underwent laparotomy and direct suture of the diaphragm defect, with uneventful post-surgical recovery. Diaphragmatic perforation after RFA is not a matter that can be ignored. Clinicians should carefully address this complication by performing RFA for HCC adjacent to diaphragm.Sachiko Nagasu Koji Okuda Ryoko Kuromatsu Yoriko Nomura Takuji Torimura Yoshito Akagi 2017World Journal of Gastrointestinal Surgery2017,9,12:3
18构建公铁货物一体化运输系统的基础分析显示文摘建立多种运输方式一体化运输系统要考虑一些基础要素,如货物特点、托运人和承运人的评价,及其运输网的通道条件等.货物特点决定了相关潜在需求和不同交通方式组合形成多式一体化运输的可能性.托运人和承运人的评价会对运输方式的选择产生重要影响.而运输网的通道条件要求各种运输方式改进相应的运输设备及服务.本文对这些要素进行对比分析,并讨论了形成公铁货物一体化运输系统的可能性及相关问题,最后,提出一些改进铁路货运服务的建议.LI Guoquan TAMURA Kazuki MUTO Masai OKUDA Daiki 2014交通运输系统工程与信息2014,14,6:3
19Acquisition of LURE-Binding Activity at the Pollen Tube Tip of Torenia fournieri显示文摘Satohiro Okuda Takamasa Suzuki Masahiro M. Kanaoka Hitoshi Moric Narie Sasaki Tetsuya Higashiyama 2013Molecular Plant2013,6,4:3
20由柏木制备纳米孔结构炭材料Ⅰ. 制备与孔结构(英文)显示文摘柏木条经过热蒸气处理,成功地制备了纳米孔炭,无需另行活化,比表面积就可达1000m2/g以上。如果在800℃~870℃炭化,柏木炭外表面积可达400m2/g以上,与同样温度在氩气中炭化得到的柏木炭相比,后者微孔面积仅为30m2/g~40m2/g。在900℃以上炭化得到的柏木炭,微孔表面积高达800m2/g以上,外表面积约为150m2/g。柏木炭的孔结构可以通过调节过热蒸气的温度得到控制。Eiki Ito Ikuyoshi Kouchi Sylwia Mozia Masaharu Okuda Takashi Nakano Masahiro Toyoda Michio Inagaki 2007新型炭材料2007,22,3:3
返回顶部 每页显示:
共177页 首页 上一页 第1页 下一页 末页 /177 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费