检索结果-南通市图书馆

Time to take another Iook at perceived disadvantages of robotic hepatectomy

在线全文

学校读者我要写书评

暂无评论

Hepatobiliary Surgery and Nutrition 2020年第2期9卷 208-210页

作者： Yasushi Hasegawa Hiroyuki Nitta takeshi Takahara Akira Sasaki Department of Surgery Iwate Medical University School of MedicineMorioka CityIwateJapan

Robotic hepatectomy remains controversial to date,despite continuous advances in the technology and more surgeons gaining experience with the *** et al.(1)recently published an interesting article in Hepatobiliary Surgery and Nutrition,titled"Selecting incision-dominant cases for robotic liver resection:towards outpatient hepatectomy with rapid recovery."The authors evaluated 97 cases of robotically-assisted liver resection(RLR)arguing that it is difficult to reach the superior-posterior liver segments with the straight instruments used in conventional laparoscopic liver resection(LLR).The articulated instruments of the surgical robot are better suited for hepatectomies in these difficult-to-reach areas of the *** concluded that cases where the incision of an open approach would be large and affect recovery results in the highest likelihood of patients benefitting from a robotic *** think that the authors present an interesting perspective by focusing on the strong points of RLR compared to LLR.

关键词： hepatectomy Surgery straight

Effect of polyvinyl butyrate nanoparticles incorporated with immune suppressing vitamins on alteration of population of intestinal immune cells

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

Progress in Natural Science:Materials International 2020年第5期30卷 707-710页

作者： Yunmei Mu Yusuke Kinashi Akihiro Kishimura takeshi Mori Koji Hase Yoshiki Katayama Graduate School of Systems Life Sciences Kyushu University Division of Biochemistry Faculty of Pharmacy Keio University Department of Applied Chemistry Faculty of Engineering Kyushu University Center for Future Chemistry Kyushu University International Research Center for Molecular System Kyushu University Division of Mucosal Barrierology International Research and Development Center for Mucosal Vaccines The Institute of Medical Science the University of Tokyo Department of Biomedical Engineering Chung Yuan Christian University

The nanoparticles(NPs) from polyvinyl butyrate(PVBu) which can work as an orally applicable donor of butyrate for intestine were prepared. Immunotolerance inducing molecules such as vitamin D3and all-trans retinoic acid(ATRA) were incorporated into PVBu NPs. The alteration in populations and numbers of DC103+dendritic cells(DC) and regulatory T(Treg) cells in intestinal immune tissues were examined after oral administration of NPs. It was found that NPs reduced the population of CD103+DC and Treg cells in Peyer’s patched in lower part of the intestine and inversely increased the population of CD103+DC in mesenteric lymph node(MLN), while the population of Treg cells in MLN was unchanged. These observations indicate that NPs may enhance the immunotolerance at MLN and lamina propria toward luminal antigens, indicating the promising features of PVBu NPs as therapeutics of allergy and autoimmune diseases.

关键词： Butyrate Polyvinyl butyrate Retinoic acid Vitamin D 3 Tolerogenic dendritic cells Regulatory T cells

Thermodynamic evaluation of new metallurgical refining processes for SOG-silicon production

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals Society of China 2011年第3期21卷 685-690页

作者： Kazuki Morita takeshi Yoshikawa Institute of Industrial Science The University of Tokyo

With the aim of developing a new silicon refining process for production of solar grade silicon, a low-temperature refining technique referred to as ＂solidification refining of silicon with a Si-Al solvent at low temperature＂ was studied. The refinability of silicon by the partial solidification from a Si-Al solvent was discussed with thermodynamic evaluation for the impurity segregation between solid silicon and a Si-Al solvent. Impurity segregation ratios were measured by using temperature gradient zone melting method for phosphorus and boron and were estimated by the thermodynamic calculation for metallic impurities. The excellent refinability was clarified from the extremely small segregation ratios of impurities at lower temperature and was also confirmed by the test refining with the partial solidification under the induction heating. Furthermore, silicon crystal growth was studied by directional solidification experiments of a Si-Al alloy, and was estimated to be diffusion controlled.

关键词： silicon Si-Al solvent purification solar cells segregation thermodynamics solidification

Geometric-phase-induced arbitrary polarization and orbital angular momentum generation in helically twisted birefringent photonic crystal fiber

在线全文

学校读者我要写书评

暂无评论

Photonics Research 2020年第8期8卷 1278-1288页

作者： takeshi FUJISAWA KUNIMASA SAITOH Graduate School of Information Science and Technology Hokkaido UniversityJapan

The evolutions of polarization and orbital angular momentum(OAM)states of light in helically twisted birefringent photonic crystal fibers(TB-PCFs)are *** is shown that a circular polarization(CP)component(S3 of a Stokes parameter)is periodically excited when usual linearly polarized(LP)modes of PCF are *** excitation originates from a geometric phase in *** S3 excitation is larger for larger linear birefringence for a fixed twisting *** the linear birefringence is large enough,a CP filtering behavior can be seen in addition to the S3 *** the analytical consideration of the sign of the geometric phase,the TB-PCF with periodical inversion of twisting is proposed to generate arbitrary polarization state on the Poincaré***,an OAM state generation in multimode TB-PCFs is shown for higher-order LP mode *** observing a far-field interference pattern from TB-PCF mixed with LP01 mode,a vortex associated with the OAM state can be *** to the single-mode case,by using periodical twisting inversion,efficient OAM generation is *** results indicate that by simply launching fiber’s LP mode into TB-PCF,arbitrary polarization and OAM states can be generated,leading to a novel mechanism for the manipulation of the spatial state of light.

关键词： polarization fiber momentum

Serum magnesium concentration in children with functional constipation treated with magnesium oxide

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2011年第6期17卷 779-783页

作者： Maiko Tatsuki Reiko Miyazawa takeshi Tomomasa Takashi Ishige Tomoko Nakazawa Hirokazu Arakawa Department of Pediatrics Gunma University Graduate School of Medicine PAL Clinic 694 Tanakajima-machiIsesakiGunma 372-0802Japan

AIM:To determine whether hypermagnesemia recently reported in adult patients possibly develops in children with functional constipation taking daily magnesium ***:We enrolled 120 patients (57 male and 63 female) aged 1-14 years old (median:4.7 years) with functional constipation from 13 hospitals and two private *** patients fulfilled the Rome Ⅲ criteria for functional constipation and were treated with daily oral magnesium oxide for at least 1 *** median treatment dose was 600 (500-800) mg/*** were assessed by an interview and laboratory examination to determine possible *** magnesium concentration was also measured in sex-and agematched control subjects (n=38).RESULTS:In the constipation group,serum magnesium concentration [2.4 (2.3-2.5) mg/dL,median and interquartile range] was significantly greater than that of the control group [2.2 (2.0-2.2) mg/dL] (P < 0.001).The highest value was 3.2 mg/*** magnesium clearance was significantly increased in the constipation *** magnesium concentration in the constipation group decreased significantly with age (P < 0.01).There was no significant correlation between the serum level of magnesium and the duration of treatment with magnesium oxide or the daily *** of the patients had side effects associated with ***:Serum magnesium concentration increased significantly,but not critically,after daily treatment with magnesium oxide in constipated children with normal renal function.

关键词： Children Constipation Hypermagnesemia Magnesium oxide Renal dysfunction

Efficient and stable tin-based perovskite solar cells by introducing π-conjugated Lewis base

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

Science China Chemistry 2020年第1期63卷 107-115页

作者： Tianhao Wu Xiao Liu Xin He Yanbo Wang Xiangyue Meng takeshi Noda Xudong Yang Liyuan Han State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240China Photovoltaic Materials Group Center for Green Research on Energy and Environmental MaterialsNational Institute for Materials ScienceTsukubaIbaraki 305-0047Japan Engineering Research Center of Environment-Friendly Functional Materials for Ministry of Education Institute of Materials Physical ChemistryCollege of Material Science and EngineeringHuaqiao UniversityXiamen 361021China Faculty of Pure&Applied Science University of TsukubaTsukubaIbaraki 305-8571Japan

Tin-based perovskite solar cells(TPSCs)as the most promising candidate for lead-free PSCs have incurred extensive researches all over the ***,the crystallization process of tin-based perovskite is too fast during the solution-deposited process,resulting in abundant pinholes and poor homogeneity that cause serious charge recombination in perovskite ***,we employed theπ-conjugated Lewis base molecules with high electron density to systematically control the crystallization rate of FASnI3 perovskite by forming stable intermediate phase with the Sn-I frameworks,leading to a compact and uniform perovskite film with large increase in the carrier ***,the introduction of theπ-conjugated systems also retards the permeation of moisture into perovskite crystal,which significantly suppresses the film degradation in *** benefits contributed to a stabilizing power conversion efficiency(PCE)of 10.1%for the TPSCs and maintained over 90%of its initial PCE after 1000-h light soaking in ***,a steady-state efficiency of 9.2%was certified at the accredited test center.

关键词： FASn I3 perovskite perovskite solar cells π-conjugated Lewis base power conversion efficiency crystallization rate

Predominant mucosal IL-8 mRNA expression in non-cagA Thais is risk for gastric cancer

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2013年第19期19卷 2941-2949页

作者： Sirikan Yamada Shunji Kato takeshi Matsuhisa Luksana Makonkawkeyoon Masaru Yoshida Thiraphat Chakrabandhu Nirush Lertprasertsuk Pawit Suttharat Bandhuphat Chakrabandhu Shin Nishiumi Wilaiwan Chongraksut takeshi Azuma Division of Gastrointestinal Surgery and Endoscopy Department of SurgeryChiang Mai UniversityChiang Mai 50200Thailand Department of Surgery Nippon Medical SchoolSendagiBunkyo-kuTokyo 113-8603Japan Department of Gastroenterology and Endoscopy Tama-Nagayama HospitalNippon Medical SchoolNagayamaTama-shiTokyo 206-8512Japan Department of Biochemistry Faculty of MedicineChiang Mai UniversityChiang Mai 50200Thailand Department of Gastroenterology International Center for Medical Research and treatmentKobe University School of MedicineKobeHyogo 650-0017Japan Department of Pathology Faculty of MedicineChiang Mai UniversityChiang Mai 50200Thailand

AIM: To study gastric mucosal interleukine-8 (IL-8) mRNA expression, the cytotoxin-associated gene A (cagA) mutation, and serum pepsinogen (PG)?I/II ratio related risk in Thai gastric cancer.METHODS: There were consent 134 Thai non-cancer volunteers who underwent endoscopic narrow band imaging examination, and 86 Thais advance gastric cancer patients who underwent endoscopic mucosal biopsies and gastric surgery. Tissue samples were taken by endoscopy with 3 points biopsies. The serum PG?I, II, and Helicobacter pylori (H. pylori) immunoglobulin G (IgG) antibody for H. pylori were tested by enzyme-linked immunosorbent assay technique. The histopathology description of gastric cancer and non-cancer with H. pylori detection was defined with modified Sydney Score System. Gastric mucosal tissue H. pylori DNA was extracted and genotyped for cagA mutation. Tissue IL-8 and cyclooxygenase-2 (COX-2) mRNA expression were conducted by real time relative quantitation polymerase chain reaction. From 17 Japanese advance gastric cancer and 12 benign gastric tissue samples, all were tested for genetic expression with same methods as well as Thai gastric mucosal tissue samples. The multivariate analysis was used for the risk study. Correlation and standardized t-test were done for quantitative data, P value < 0.05 was considered as a statistically significant.RESULTS: There is a high non cagA gene of 86.8 per cent in Thai gastric cancer although there are high yields of the East Asian type in the positive cagA. The H. pylori infection prevalence in this study is reported by combined histopathology and H. pylori IgG antibody test with 77.1% and 97.4% of sensitivity and specificity, respectively. The serum PG?I/II ratio in gastric cancer is significantly lower than in the non-cancer group, P = 0.045. The serum PG?I/II ratio of less than 3.0 and IL-8 mRNA expression ≥ 100 or log10 ≥ 2 are significant cut off risk differences between Thai cancer and non-cancer, P = 0.03 and P < 0.001,

关键词： Gastric cancer CagA mutation Interleukine-8 mRNA expression Helicobacter pylori Pepsinogen I/II ratio

Infrasound observations at Syowa Station,East Antarctica:Implications for detecting the surface environmental variations in the polar regions

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

Geoscience Frontiers 2015年第2期6卷 285-296页

作者： Yoshiaki Ishihara Masaki Kanao Masa-yuki Yamamoto Shigeru Toda takeshi Matsushima Takahiko Murayama National Institute of Advanced Industrial Science and Technology National Institute of Polar Research Research Organization of Information and Systems Kochi University of Technology Faculty of Education Aichi Education University Faculty of Sciences Kyushu University Japan Weather Association

Characteristic infrasound waves observed at Antarctic stations demonstrate physical interaction involving environmental changes in the Antarctic continent and the surrounding oceans. A Chaparraltype infrasound sensor was installed at Syowa Station （SYO; 39°E, 69°S）, East Antarctica, as one of the projects of the International Polar Year （IPY2007-2008）. Data continuously recorded during the three seasons in 2008-2010 clearly indicate a contamination of the background oceanic signals （microbaroms） with peaks between 4 and 10 s observed during a whole season. The peak amplitudes of the microbaroms have relatively lower values during austral winters, caused by a larger amount of sea-ice extending around the Lutzow-Holm Bay near SYO, with decreasing ocean wave loading effects. Micro- baroms measurements are useful tool for characterizing ocean wave climate, complementing other oceanographic and geophysical data. A continuous monitoring by infrasound sensors in the Antarctic firmly contributes to the Comprehensive Nuclear-Test-Ban Treaty （CTBT） in the southern high latitude, together with the Pan-Antarctic Observations System （PAntOS） under the Scientific Committee on Antarctic Research （SCAR）. Detailed measurements of the infrasound waves in Antarctica, consequently, could be a new proxy for monitoring regional environmental change as well as the temporal climate variations in the polar regions.

关键词： lnfrasound Antarctica Microbaroms Environment Global network

A NOTE ON MULTILINEAR FRACTIONAL INTEGRALS

在线全文

学校读者我要写书评

暂无评论

Analysis in Theory and Applications 2010年第4期26卷 301-307页

作者： takeshi Iida Yasuo Komori-Furuya Enji Sato Yamagata University Tokai University

Shi and Wao[6] studied the boundedness of multilinear fractional integrals introduced by Kenig and Stein[3] on product of weighted LP-spaces, and got some results. We give some remarks with respect to their results an... 详细信息

关键词： multilinear fractional integral Ap,q weight Aαp,q weight