检索结果-南通市图书馆

Molecules with a TEMPO-based head group as high-performance organic friction modifiers

Friction 2023年第2期11卷 316-332页

作者： Jinchi HOU masaki tsukamoto Seanghai HOR Xingyu CHEN Juntao YANG Hedong ZHANG Nobuaki KOGA Koji YASUDA Kenji FUKUZAWA Shintaro ITOH Naoki AZUMA Department of Complex Systems Science Graduate School of InformaticsNagoya UniversityNagoya 464-8601Japan Institute of Materials and Systems for Sustainability Nagoya UniversityNagoya 464-8601Japan Department of Micro-Nano Systems Engineering Graduate School of EngineeringNagoya UniversityNagoya 464-8603Japan

High-performance organic friction modifiers(OFMs)added to lubricating oils are crucial for reducing energy loss and carbon *** establish a new class of OFMs,we measured the friction and wear properties of N-(2,2,6,6-tetramethyl-1-oxyl-4-piperidinyl)dodecaneamide referred to as *** effect of its head group chemistry,which is characterized by a rigid six-membered ring sandwiched by an amide group and a terminal free oxygen radical,was also investigated with both experiments and quantum mechanical(QM)*** measurement results show that C12Amide-TEMPO outperforms the conventional OFMs of glyceryl monooleate(GMO)and stearic acid,particularly for load-carrying capacity,wear reduction,and stability of friction over *** friction and wear reduction effect of C12Amide-TEMPO is also greatly superior to those of C12Ester-TEMPO and C12Amino-TEMPO,in which ester and amino groups replace the amide group,highlighting the critical role of the amide *** QM calculation results suggest that,in contrast to C12Ester-TEMPO,C12Amino-TEMPO,and the conventional OFMs of GMO and stearic acid,C12Amide-TEMPO can form effective boundary films on iron oxide surfaces with a unique double-layer structure:a strong surface adsorption layer owing to the chemical interactions of the amide oxygen and free radical with iron oxide surfaces,and an upper layer owing to the interlayer hydrogen-bonding between the amide hydrogen and free radical or between the amide hydrogen and ***,the intralayer hydrogen-bonding in each of the two layers is also *** suggest that in addition to strong surface adsorption,the interlayer and intralayer hydrogen-bonding also increases the strength of the boundary films by enhancing the cohesion strength,thereby resulting in the high tribological performance of *** findings in this study are expected to provide new hints for the optimal molecular design of OFMs.

关键词： organic friction modifiers(OFMs) TEMPO friction and wear surface adsorption molecular reactivity boundary lubrication

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

Combined laparoscopic and thoracoscopic repair of adult right-sided Bochdalek hernia with massive liver prolapse: A case report

引用

World Journal of Clinical Cases 2024年第14期12卷 2420-2425页

作者： Shinya Mikami Sae Kimura Yoshitsugu tsukamoto masaki Hiwatari Yasuhito Hisatsune Asako Fukuoka Tsunehisa Matsushita Takeharu Enomoto Takehito Otsubo Department of Gastrointestinal and General Surgery St.Marianna University School of MedicineKanagawa 216-8511Japan

BACKGROUND A Bochdalek hernia(BH)is a congenital diaphragmatic hernia that often develops in the neonatal *** typically occurs on the left side of the diaphragm.A right-sided BH in an adult is *** SUMMARY A 45-year-old man was referred to our hospital because of an abnormal shadow seen on chest radiography during a medical check-up.A chest radiograph showed elevation of the right *** tomography showed prolapse of multiple intraabdominal organs into the right thoracic cavity,corresponding to a right-sided *** herniated contents included the stomach,transverse colon,and left lobe of the *** left lobe of the liver was enlarged,particularly the medial *** surgery was ***,the left lobe of the liver was completely trapped in the thoracic ***,thoracoscopic manipulation had to be performed to return the liver to the abdominal *** hernia was repaired with interrupted nonabsorbable sutures and reinforced with *** Combined laparoscopic and thoracoscopic surgery was successfully performed for right-sided BH with massive liver prolapse and abnormal liver morphology.

关键词： Bochdalek hernia Right-sided Adult Laparoscopic and thoracoscopic repair Liver prolapse Abnormal liver morphology 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

Complexity Reduced MIMO Interleaved SC-FDMA Receiver with Iterative Detection

引用

International Journal of Communications, Network and System Sciences 2014年第12期7卷 508-518页

作者： masaki tsukamoto Yasunori Iwanami Department of Computer Science and Engineering Graduate School of Engineering Nagoya Institute of Technology Nagoya Japan

In this paper, we propose the receiver structure for Multiple Input Multiple Output (MIMO) Interleaved Single Carrier-Frequency Division Multiple Access (SC-FDMA) where the Frequency Domain Equalization (FDE) is firstly done for obtaining the tentative decision results and secondly using them the Inter-Symbol Interference (ISI) is cancelled by ISI canceller and then the Maximum Likelihood Detection (MLD) is used for separating the spatially multiplexed signals. Furthermore the output from MLD is fed back to ISI canceller repeatedly. In order to reduce the complexity, we replace the MLD by QR Decomposition with M-Algorithm (QRD-M) or Sphere Decoding (SD). Moreover, we add the soft output function to SD using Repeated Tree Search (RTS) algorithm to generate soft replica for ISI cancellation. We also refer to the Single Tree Search (STS) algorithm to further reduce the complexity of RTS. By examining the BER characteristics and the complexity reduction through computer simulations, we have verified the effectiveness of proposed receiver structure.

关键词： Interleaved SC-FDMA MLD QRD-M Sphere Decoding RTS STS Iterative Detection Complexity Reduction

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

Cyclic Bis(3'-5')diadenylic Acid (c-di-AMP) Analogs Promote the Activities of Photosynthesis and Respiration of <i>Chlamydomonas reinhardtii</i>

引用

American Journal of Plant Sciences 2014年第1期5卷 24-28页

作者： Takafumi Tezuka Hiroshi Shirouzu Keigo Ishida Noritaka Suzuki Takuya Matsuo Kin-ichi Oyama Setsuyuki Aoki masaki tsukamoto Center for Gene Research Division of Biological Science Graduate School of Science Nagoya University Nagoya Japan Chemical Instrumentation Facility Research Center for Materials Science Nagoya University Nagoya Japan Graduate School of Information Science Nagoya University Nagoya Japan

Physiological changes in the photosynthesis, respiration and cell division of Chlamydomonas reinhardtii, a freshwater green alga, in response to adenine nucleotides were investigated. In advance of this investigation, two adenine nucleotides, di(2'-O-methyl)-cyclic bis(3'-5')diadenylic acid (1) and its N-benzoyl-protected analog 2 were synthesized from the commercially available adenosine phosphoramidite. The respective analogs significantly promoted the cell division (cell number) of C. reinhardtii strains 137c mt+ and BR mt+. Moreover, they significantly enhanced the O2 evolution (photosynthesis) and O2 uptake (respiration) of both strains. c-di-AMP analogs seem to play an effective role as a physiological activator in planta.

关键词： c-di-AMP O2 Evolution (Photosynthesis) O2 Uptake (Respiration) Chlamydomonas reinhardtii

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

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

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

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：