检索结果-南通市图书馆

A Novel Thermomorphic System for Electrocatalytic Diels-Alder Reactions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2019年第6期37卷 557-560页

作者： Yasushi Imada Naoki Shida yohei okada Kazuhiro Chiba Department of Applied Biological Science Tokyo University of Agriculture and Technology3-5-8 Saiwai-choFuchuTokyo 183-8509Japan Department of Chemical Engineering Tokyo University of Agriculture and Technology2-24-16 Naka-choKoganeiTokyo 184-8588Japan

The discovery that lithium bis(trifluoromethane)sulfonamide (LiTFSI)/1-nitropropane (PrNO2) solution functions as a less polar alternative to lithium perchlorate (LiClO4)/nitromethane (MeNO2) solution has led to the development of a novel thermomorphic system for electrocatalytic Diels-Alder reactions. Methyl cyclohexane (Me-c-Hex) can form a monophasic condition with LiTFSI/PrNO2 solution at room temperature, enabling the use of hydrophobic dienophiles. After the electrochemical reaction, a biphasic condition can be formed at –50℃, where the cycloadducts are selectively recovered from the upper Me-c-Hex phase and the remaining lower LiTFSI/PrNO2 solution can be reused.

关键词： thermomorphic system electro catalytic Diels-Alder reaction electrochemistry synthetic methods cycloaddition

Initial 3-month dynamics of dehydroepiandrosterone sulfate can predict responsiveness to primary androgen deprivation therapy in patients with metastatic prostate cancer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2019年第6期21卷 635-636页

作者： Akihiro Yano Makoto Kagawa Hideki Takeshita yohei okada Makoto Morozumi Satoru Kawakami Department of Urology Saitama Medical CenterSaitama Medical UniversityKawagoeSaitama 350-8550Japan.

Dear Editor,Intensive treatments such as primary androgen deprivation therapy(pADT)plus docetaxel or abiraterone acetate are reportedly beneficial in metastatic prostate cancer(mPCa)patients with high-volume disease or high-risk features,respectively.1,2 High-volume or high-risk features are determined exclusively via pretreatment parameters.Predicting patient responsiveness to pADT,which is one of the major determinants of survival in these patients,would be advantageous with regard to making primary treatment decisions.If an initial 3-month period is possible,short-term serum parameter dynamics can be used to predict pADT responsiveness.Prostate-specific antigen(PSA)and alkaline phosphatase(ALP)dynamics have been indicated as potential predictors.3,4 Although pADT can reportedly cause a 20%-30%decrease in adrenal androgen levels,5 it is not known whether the dynamics of adrenal androgens shortly after the initiation of pADT can predict pADT responsiveness.The aim of the current study was to identify predictors of pADT responsiveness among pretreatment parameters and 3-month dynamics(D3m)of serum parameters including the adrenal androgen,dehydroepiandrosterone sulfate(DHEAS).

关键词： patients metastatic cancer

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

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 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 arrhythmias.We 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 vasopressors.Nine hours after arrival,an electrocardiogram revealed a return to sinus rhythm.The patient was weaned off VA-ECMO and the ventilator on hospital days 3 and 5,respectively.On hospital day 15,he was transferred to a psychiatric hospital.The 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 root.Serum on admission contained 1.50 ng/mL of aconitine.Beyond hospital day 2,neither were detected.Urine on admission showed 149.09 ng/mL of aconitine and 3.59 ng/mL of mesaconitine,but these rapidly decreased after hospital day 3.CONCLUSION 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

Emotion Measurement Using Biometric Signal

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Health 2024年第5期16卷 395-404页

作者： Yukina Miyagi Saori Gocho Yuka Miyachi Chika Nakayama Shoshiro okada Kenta Maruyama Taeyuki Oshima College of Pharmacy Kinjo Gakuin University Nagoya Japan Graduate School of Medicine Aichi Medical University Nagakute Japan Department of Pharmacy Nagoya Ekisaikai Hospital Nagoya Japan Department of Pharmacy Gifu University of Medical Science Kani Japan

In recent years, research on the estimation of human emotions has been active, and its application is expected in various fields. Biological reactions, such as electroencephalography (EEG) and root mean square successive difference (RMSSD), are indicators that are less influenced by individual arbitrariness. The present study used EEG and RMSSD signals to assess the emotions aroused by emotion-stimulating images in order to investigate whether various emotions are associated with characteristic biometric signal fluctuations. The participants underwent EEG and RMSSD while viewing emotionally stimulating images and answering the questionnaires. The emotions aroused by emotionally stimulating images were assessed by measuring the EEG signals and RMSSD values to determine whether different emotions are associated with characteristic biometric signal variations. Real-time emotion analysis software was used to identify the evoked emotions by describing them in the Circumplex Model of Affect based on the EEG signals and RMSSD values. Emotions other than happiness did not follow the Circumplex Model of Affect in this study. However, ventral attentional activity may have increased the RMSSD value for disgust as the β/θ value increased in right-sided brain waves. Therefore, the right-sided brain wave results are necessary when measuring disgust. Happiness can be assessed easily using the Circumplex Model of Affect for positive scene analysis. Improving the current analysis methods may facilitate the investigation of face-to-face communication in the future using biometric signals.

关键词： Biometric Signals Electroencephalogram Electrocardiogram Emotion Communication

SPERA Hydrogen System^(TM)by LOHC-MCH Method for Massive Hydrogen Storage and Transportation

维普期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Science and Engineering(A) 2024年第2期13卷 50-60页

作者： Yoshimi okada Kaji Naohiro Osamu Ikeda Kenichi Imagawa Hironori Kawai Masashi Nagai Yasuhiro Inoue Frontier Business Division Chiyoda Corporation4-6-2 Minatomirai Nishi-kuYokohama 2208765Japan Hydrogen Business Department Chiyoda Corporation4-6-2 Minatomirai Nishi-kuYokohama 2208765Japan R&D Center Chiyoda Corporation3-13 Moriya-cho Kanagawa-kuYokohama 2208765Japan Technology Development Department Chiyoda Corporation4-6-2 Minatomirai Nishi-kuYokohama 2208765Japan

Expanding the hydrogen energy utilization is essential for decarbonization,and the commercialization of hydrogen energy carrier systems that can“store”and“transport”hydrogen in a large scale is necessary.The organic chemical hydride method incorporates hydrogen atoms into the molecular structure of a LOHC(Liquid Organic Hydrogen Carrier)to store and transport hydrogen in a liquid state under normal temperature and pressure,and is a highly safe method with low business risk.Chiyoda has been developing the technology since 2002,completed a pilot demonstration in 2014 and named it the SPERA Hydrogen^(TM) System,and successfully completed an international supply chain demonstration that transports hydrogen from Brunei to Japan in a large scale in 2020,moving to the commercialization stage.Currently,Chiyoda is conducting feasibility studies with a number of domestic and foreign companies with the aim of commercializing the system as soon as possible.In this paper,outline,features,development status and our efforts in commercialization of SPERA HydrogenTM System are introduced.

关键词： Hydrogen carrier LOHC Methylcyclohexane MCH toluene

Novel synthesis of single-crystalline TbCu_(7)-type Sm-Fe powder by low-temperature reduction-diffusion process using molten salt

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Rare Earths 2022年第7期40卷 1126-1133页

作者： Shusuke okada Kenta Takagi Magnetic Powder Metallurgy Research Center National Institute of Advanced Industrial Science and Technology(AIST)2266-98 AnagahoraShimoshidami MoriyamaNagoya463-8560Japan

In this study,molten salt was used as a solvent for calcium(Ca)to let a reduction-diffusion(R-D)reaction occur below the melting point of Ca(1115 K),which is the lower limit temperature of the co nventional RD process.When the R-D reaction is conducted below 923 K with LiCl molten salt,submicron-sized TbCu_(7)-type Sm-Fe powder is formed.The c/a ratio of the powder estimated by a synchrotron X-ray diffraction pattern is 0.8456,which is consistent with the Sm_(0.67)Fe_(5.667)(SmFe_(8.5))phase.An electron backscatter diffraction analysis reveals that single-crystalline TbCu_(7)-type SmFe_(8.5) powder was synthesized for the first time.

关键词： Reduction-diffusion TbCu_(7) Molten salt Permanent magnet Rare earths

Lepton mass matrix from double covering of A_(4) modular flavor symmetry

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

Chinese Physics C 2022年第12期46卷 162-171页

作者： Hiroshi okada Yuta Orikasa Asia Pacific Center for Theoretical Physics(APCTP)-Headquarters San 31 Hyoja-dongNam-guPohang 790-784Korea Department of Physics Pohang University of Science and TechnologyPohang 37673Republic of Korea Institute of Experimental and Applied Physics Czech Technical University in PragueHusova 240/511000 Prague 1Czech Republic

We study a double covering of modular A_(4)flavor symmetry.To this end,we construct lepton models for canonical and radiative seesaw scenarios.Using irreducible doublet representations,heavier Majorana fermion masses are characterized by one free parameter that would differentiate from A_(4)symmetry.symmetry.Throughχsquare numerical analysis,we demonstrate that both scenarios produce some predictions in case of normal hierarchy reproducing neutrino oscillation data.However,no solution satisfies the neutrino oscillation data in case of radiative seesaw of inverted hierarchy.

关键词： flavor physics neutrino and Lepton mass beyond the standard model

Low-temperature synthesis of Sm-Fe binary compounds by reduction-diffusion process using an eutectic salt solvent

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

Rare Metals 2023年第5期42卷 1724-1731页

作者： Jungryang Kim Shusuke okada Kenta Takagi Magnetic Powder Metallurgy Research Center National Institute of Advanced Industrial Science and Technology(AIST)NagoyaAichi463-8560Japan

In this study,the temperature of the low-temperature reduction-diffusion(LTRD)process was successfully decreased to below 600℃by introducing LiClKCl eutectic molten salt with a low eutectic point(352℃)as a solvent for Ca reductant.Therefore,the Sm-Fe binary compounds,which were synthesizable at previously-unexplored low temperatures by the LTRD process using LiCl-KCl eutectic molten salt,were investigated,including whether a new metastable or ThMn_(12)-type Sm-Fe binary phase was formed.The Sm-Fe phase transitions of the SmFe binary compounds at a low temperature were identified,and it was found that MgCu_(2)-type Sm-Fe,PuNi_(3)-type SmFe and TbCu_(7)-type Sm-Fe phases were synthesized and stable at 400,500 and 550℃respectively.Although no new metastable Sm-Fe and ThMn_(12)-type Sm-Fe compounds were discovered in this study,this work can demonstrate that it is possible to synthesize the Sm-Fe phase at very low temperatures by the LTRD process for the first time.

关键词： Low-temperature synthesis Reductiondiffusion process Molten salts Hard magnet Sm-Fe compounds

Review of lymphoma in the duodenum: An update of diagnosis and management

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

World Journal of Gastroenterology 2023年第12期29卷 1852-1862页

作者： Masaya Iwamuro Takehiro Tanaka Hiroyuki okada Department of Gastroenterology and Hepatology Okayama University Graduate School of MedicineDentistryand Pharmaceutical SciencesOkayama 700-8558Japan Department of Pathology Okayama University HospitalOkayama 700-8558Japan

The presentation,subtype,and macroscopic images of lymphoma vary depending on the site of the tumor within the gastrointestinal tract.We searched PubMed for publications between January 1,2012 and October 10,2022,and retrieved 130 articles relating to duodenal lymphoma.A further 22 articles were added based on the manual screening of relevant articles,yielding 152 articles for full-text review.The most predominant primary duodenal lymphoma was follicular lymphoma.In this review,we provide an update of the diagnosis and management of representative lymphoma subtypes occurring in the duodenum:Follicular lymphoma,diffuse large B-cell lymphoma,extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue,mantle cell lymphoma,and Tcell lymphomas.

关键词： Diagnosis Diffuse large B-cell lymphoma Duodenal neoplasms Esophagogastroduodenoscopy Follicular lymphoma Gastrointestinal lymphoma