检索结果-南通市图书馆

Excessive ammonia inhibited transcription of MsU2 gene and furthermore affected accumulation distribution of allantoin and amino acids in alfalfa Medicago sativa

引用

Journal of Integrative Agriculture 2015年第7期14卷 1269-1282页

作者： WANG Li JIANG Lin-lin Nomura Mika tajima shigeyuki CHENG Xian-guo College of Life Science Shanxi Normal University Key Laboratory of Plant Nutrition and Fertilizers Agriculture of Ministry/Insititute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural Sciences Faculty of Agriculture Kagawa University 2393 Ikenobe Miki-choKita-gun Kagawa 761-0795 Japan

In legume plants, uricase gene （Nodulin-35） plays a positive role in metabolism of ureide and amide compounds in symbiotic nitrogen-fixing in the nodules. In this study, a pot experiment was performed to examine the effects of ammonium application on the transcription of MsU2 gene and distribution of major nitrogen compounds in alfalfa Medicago sativa. Data showed that alfalfa plant has a significant difference in contents of nitrogen compounds in xylem saps compared with soybean plant, and belongs to typical amide type legume plants with little ureide accumulation, and the accumulation of asparagines and ureide in the tissues of alfalfa is mainly gathered in the nodules. Northern blotting showed that excessive ammonium significantly inhibited the transcription of MsU2 gene in the nodules and roots, and mRNA accumulation of MsU2 gene in the plants exposed to excessive ammonium decreased gradually with culture time extension, indicating that application of ammonium significantly inhibited the transcription of MsU2 gene in the alfalfa plants. Although the application of exces- sive ammonium increased the contents of amino acids in various tissues of alfalfa, the accumulation of allantoin reflecting the strength of uricase activity is remarkably reduced in the xylem saps, stems and nodules when alfalfa plants exposed to excessive ammonium, suggesting that application of excessive ammonium generated a negative effect on symbiosis fixing-nitrogen system due to inhibition of ammonium ion on uricase activity in the nodules of alfalfa. This result seems to imply that application of excessive ammonium in legume plants should not be proposed to avoid affecting the ability of fixing nitrogen in the nodules of legume plants, and reasonable dose of ammonium should be recommended to effectively utilize the fixed N from atmosphere in legume plant production.

关键词： alfalfa amino acids ammonium MsU2 gene allantoin

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Droplet morphology analysis of drop-on-demand inkjet printing

引用

China Foundry 2024年第1期21卷 20-28页

作者： Hu-xiang Xia Takechi Kensuke tajima Shin Kawamura Yoshiumi Qing-yan Xu Key Laboratory for Advanced Materials Processing Technology(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Toyota Central R&D Labs. Inc.41-1 Yokomichi NagakuteAichi 480-1192Japan Frontier Research Center Toyota Motor Corporation1 Toyota-ChoToyotaAichi 471-8572Japan

As an accurate 2D/3D fabrication tool,inkjet printing technology has great potential in preparation of micro electronic *** morphology of droplets produced by the inkjet printer has a great impact on the accuracy of *** this study,the drop-on-demand(DoD)inkjet simulation model was established,and the accuracy of the simulation model was verified by corresponding *** simulation result shows that the velocity of the droplet front and tail,as well as the time to disconnect from the nozzle is mainly affected by density(ρ),viscosity(μ)and surface tension(σ)of *** the liquid filament is about to disconnect from the nozzle,the filament length and filament front velocity are found to have a linear correlation withσ/ρμand ln(ρ/(μσ1/2)).

关键词： microdevice fabrication inkjet printing droplet morphology modeling and simulation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Protein profile of symbiotic bacteria Mesorhizobium loti TONO

Protein profile of symbiotic bacteria Mesorhizobium loti TON...

引用

21st IUBMB and 12th FAOBMB International Congress of Biochemistry and Molecular Biology

作者： Dao Van Tan Le Thi Phuong Hoa Mika Nomura shigeyuki tajima Centre for Natural Resources and Environmental Studies VNUVietnam(speaker) Faculty of Biology Hanoi National University of EducationVietnam Faculty of Agriculture Kagawa UniversityJapan

＜正＞Expressed proteins in free-living *** TONO were proteomically analysed.A partial proteome map was constructed by separating total bacterium proteins using 2-dimensional gel electrophoresis. Total 118 proteins were identified and tentatively classified into 14 groups. Proteins belonging to cell processes,membrane transport and energy

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Immunotherapy for esophageal cancer:Where are we now and where can we go

引用

World Journal of Gastroenterology 2024年第19期30卷 2496-2501页

作者： Yoshiaki Shoji Kazuo Koyanagi Kohei Kanamori Kohei tajima Mika Ogimi Yamato Ninomiya Miho Yamamoto Akihito Kazuno Kazuhito Nabeshima Takayuki Nishi Masaki Mori Department of Gastroenterological Surgery Tokai University School of MedicineKanagawa 259-1193Japan

Immune checkpoint inhibitor therapy has dramatically improved patient prognosis,and thereby transformed the treatment in various cancer types including esophageal squamous cell carcinoma(ESCC)in the past *** antibodies that selectively inhibit programmed cell death-1(PD-1)activity has now become standard of care in the treatment of ESCC in metastatic settings,and has a high expectation to provide clinical benefit during perioperative ***,anti-cytotoxic T-lymphocyte–associated protein 4(CTLA-4)monoclonal antibody has also been approved in the treatment of recurrent/metastatic ESCC in combination with anti-PD-1 *** understanding of the existing evidence of immune-based treatments for ESCC,as well as recent clinical trials on various combinations with chemotherapy for different clinical settings including neoadjuvant,adjuvant,and metastatic diseases,may provide future prospects of ESCC treatment for better patient outcomes.

关键词： Esophageal cancer Immunotherapy Immune checkpoint inhibitor Programmed cell death-1 Anti-cytotoxic T-lymphocyte-associated protein 4 Neoadjuvant therapy Adjuvant therapy Clinical trials Combination therapy

来源：

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

Coprecipitation mechanisms of Zn by birnessite formation and its mineralogy under neutral pH conditions

引用

Journal of Environmental Sciences 2022年第11期34卷 136-147页

作者： Shota tajima Shigeshi Fuchida Chiharu Tokoro Graduate School of Creative Science and Engineering Waseda University3-4-1 OkuboShinjuku-kuTokyo 169-8555Japan Faculty of Science and Engineering Waseda University3-4-1 OkuboShinjuku-kuTokyo 169-8555Japan Faculty of Engineering The University of Tokyo7-3-1 HongoBunkyo-kuTokyo 113-8656Japan

Birnessite(δ-Mn(IV)O_(2))is a great manganese(Mn)adsorbent for dissolved divalent *** this study,we investigated the coprecipitation mechanism of δ-MnO_(2) in the presence of Zn(II)and an oxidizing agent(sodium hypochlorite)under two neutral pH values(6.0 and 7.5).Themineralogical characteristics and Zn–Mn mixed products were compared with simple surface complexation by adsorption modeling and structural *** coprecipitation experiments at different Zn/Mn molar ratios showed a Langmuir-type isotherm at pH 6.0,which was similar to the result of adsorption experiments at pH 6.0 and 7.5.X-ray diffraction and X-ray absorption fine structure analysis revealed triple-corner-sharing innersphere complexation on the vacant sites was the dominant Zn sorption mechanism on δ-MnO_(2) under these experimental conditions.A coprecipitation experiment at pH 6.0 produced some hetaerolite(ZnMn(Ⅲ)_(2)O_(4))and manganite(γ-Mn(Ⅲ)OOH),but only at low Zn/Mn molar ratios(<1).These secondary precipitates disappeared because of crystal dissolution at higher Zn/Mn molar ratios because they were thermodynamically ***(ZnMn(IV)_(3)O_(7)•2H_(2)O)was produced in the coprecipitation experiment at pH 7.5 with a high Zn/Mn molar ratio of *** resulted in a Brunauer–Emmett–Teller(BET)-type sorption isotherm,in which formation was explained by transformation of the crystalline structure ofδ-MnO_(2) to a tunnel *** experiments demonstrate that abiotic coprecipitation reactions can induce Zn–Mn compound formation on theδ-MnO_(2) surface,and that the pH is an important controlling factor for the crystalline structures and thermodynamic stabilities.

关键词： δ-MnO2 Zinc removal Surface complexation X-ray absorption fine structure

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Verification of Inverse Quench-Hardening Phenomena in Bearing Steel Specimens by Experiment and Computer Simulation

引用

材料热处理学报 2004年第5期25卷 465-470页

作者： Kyozo Arimoto Chuanrong Jin shigeyuki Tamura Kiyoshi Funatani Mamoru tajima Arimotech Ltd. Osaka JapanCRC Solutions Corp. Tokyo Japan CRC Solutions Corp. Tokyo Japan IMSTInst. Nagoya JapanKanagawa University Kanagawa Japan

The appearance of lower hardness at the surface than at the core after through-hardening of steels is known as "inverse quench-hardening." Pioneering work was performed in the 1970s by establishing a simple test procedure where cylindrical specimens were cooled by air and brine sequentially to produce the effect. This phenomenon was described in relation to the polymer quenching and its effect to the improvement in the fatigue strength of the steel in the 1990s. The hardening mechanism in the same specimens as the pioneering work was recently examined using a finite element simulation method. However, this work has not been completed for lack of experimental quenching cooling curves for the comparisons. In this study, the same experiments using 20mm diameter cylindrical specimens as those of the pioneering work were conducted to obtain cooling curves and hardness distributions for comparing simulated results. Experimental cooling curves showed a temperature recovery as predicted by the simulation. Also the inverse quench-hardening phenomena were found in the measured and simulated hardness distributions of the specimens.

关键词：热处理逆淬火硬化轴承钢计算机模拟

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Comment on“Perihilar cholangiocarcinoma-novel benchmark values for surgical and oncological outcomes from 24 expert centers”

引用

Hepatobiliary Surgery and Nutrition 2022年第2期11卷 314-316页

作者： Yasunari Kawabata Yoshitsugu tajima Department of Digestive and General Surgery Shimane University Faculty of MedicineIzumoShimaneJapan

Perihilar cholangiocarcinoma(PHC)is an aggressive malignancy of the biliary tracts with a dismal *** the primary goal of surgery for PHC is complete tumor removal with negative resection margins and regional lymphadenectomy,surgery for PHC with curative intent remains a challenge for surgeons because it involves complex surgical procedures such as bile duct resection,major hepatectomy,and/or vascular *** intensive procedures are often associated with postoperative complications,including severe morbidity and 30-day mortality with incidences of 40%and 5%,respectively(1).From the perspective of surgical and oncological safety,the standardization of aggressive surgical approaches and the establishment of standardized benchmark values that secure the best achievable outcomes are warranted in the treatment of patients with PHC.

关键词： surgical surgery mortality

来源：

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

Control of Snow Falling Flow around NACA0015 Blade using a Plasma Electrode with Weather Resistant Design

引用

Journal of Thermal Science 2022年第1期31卷 72-81页

作者： MATSUDA Hisashi CHIBA Takahiro YAGAMI Masaki tajima Yusuke WATANABE Nobuyoshi SATO Hideaki TAKEYAMA Masafumi Hokkaido University of Science Hokkaido 006-8585Japan Asahi Rubber Inc. Saitama 330-0801Japan

The plasma actuation (PA) effect on the snow falling flow was investigated using a plasma electrode with weather resistant design and the natural snow wind facility of the Hokkaido University of Science. NACA0015 test blade with chord length c of 300 mm was used. Wind tunnel tests were carried out under the angle of the attack of the blade was fixed at 15 degrees, and the main flow velocity is U=5 m/s. PIV (Particle image velocimetry) measurements were conducted on various PA conditions using natural dry snowflakes as a tracer. When the actuator was driven under the condition of the fundamental frequency of F=50 kHz, and the pulsed modulated frequency f of fc/U=1 and Duty ratio (Ratio of plasma ON time to pulse duration time) =1%, movement of snowflakes was controlled the most effectively tested. It was clarified that the fundamental frequency of PA also affects the control of snow flow. Under snowfall conditions, the weather resistant designed plasma electrode has suffered no damage and operated successfully.

关键词： plasma actuator weather resistant design snow falling flow control experiment PIV

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Successful resection of colonic metastasis of lung cancer after colonic stent placement:A case report and review of the literature

引用

World Journal of Gastrointestinal Surgery 2023年第7期15卷 1549-1558页

作者： Yoko Nakayama Minekazu Yamaguchi Keisuke Inoue Shunichi Hamaguchi Yoshitsugu tajima Department of Surgery Oda Municipal HospitalOda 694-0063ShimaneJapan Department of General Medicine Shimane University Faculty of MedicineIzumo 693-8501Japan Department of Digestive and General Surgery Shimane University Faculty of MedicineIzumo 693-8501Japan

BACKGROUND Lung cancer is the leading cause of cancer deaths *** lung cancer can metastasize to various organs such as the liver,lymph nodes,adrenal gland,bone,and brain,metastases to the digestive organs,especially the colon,are *** SUMMARY An 83-year-old man diagnosed with lung cancer received radiation and chemoimmunotherapy,resulting in a complete clinical *** year after the initial lung cancer diagnosis,the patient presented with obstructive ileus caused by a tumor in the descending *** elective left hemicolectomy was successfully performed after the endoscopic placement of a self-expandable metallic stent(SEMS).Pathologically,the tumor of the descending colon was diagnosed as lung cancer *** postoperative course was uneventful,and the patient is in good condition 13 mo after surgery,with no signs of *** previous 23 cases of surgical resection of colonic metastasis from lung cancer were reviewed using PubMed to characterize their clinicopathological features and *** SEMS is useful for obstructive colonic metastasis as a bridge to surgery to avoid emergency operations.

关键词： Colonic metastasis Colonic obstruction Lung cancer Self-expandable metallic stent Surgical resection Case report

来源：

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

Active Control of Fan Noise

引用

Journal of Thermal Science 2008年第2期17卷 163-169页

作者： Nobuhiko YAMASAKI Hirotoshi tajima Department of Aeronautics and Astronautics Kyushu University

在醒来转子相互作用扇子噪音，很多在传递频率(BPF ) 和它的泛音的片的交往的模式被产生它被定子和转子片等等的数字规定。在现在的学习，主导的模式被试试被第二等的声音从扬声器致动器压制。现在的系统的新奇特征之一是有领域可编程... 详细信息

在醒来转子相互作用扇子噪音，很多在传递频率(BPF ) 和它的泛音的片的交往的模式被产生它被定子和转子片等等的数字规定。在现在的学习，主导的模式被试试被第二等的声音从扬声器致动器压制。现在的系统的新奇特征之一是有领域可编程的门数组(FPGA ) 硬件和 LabVIEW 软件的控制板的采纳同步有在任意的扇子下面的旋转的片的相对地点的环绕地安装的扬声器致动器旋转速度。实验在 2004， 3150，和 4002 的三旋转速度的条件下面被进行[rpm ] 。在健全压力水平(系统程序设计语言) 的减小为所有三旋转速度被观察。在 BPF 的健全压力水平被减少约 13 [dB ] 为 2004 [rpm ] 大小写。

关键词：定子-转子系统技术性能抗噪音控制系统切割技术

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：