检索结果-南通市图书馆

“One stone,two birds”solvent system to fabricate microcrystalline cellulose–Ti_(3)C_(2)T_(x)nanocomposite film as a flexible dielectric and thermally conductive material

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

Nano Research 2023年第2期16卷 3240-3253页

作者： Yong-Zhu Yan Shuwei Li Sung Soo Park Wei-Jin Zhang jun Seok Lee jung Rae Kim Dong Gi seong chang-Sik Ha Department of Polymer Science and Engineering School of Chemical EngineeringPusan National UniversityBusan 46241Republic of Korea School of Chemical and Biomolecular Engineering Pusan National UniversityBusan 46241Republic of Korea Division of Advanced Materials Engineering Dong-Eui UniversityBusan 47340Republic of Korea

A strategy for fabricating microcrystalline cellulose–Ti_(3)C_(2)T_(x)(MCC–MXene)nanocomposite films with high relative permittivity,high thermal conductivity,and excellent mechanical properties was *** MCC–MXene nanocomposite film was fabricated by casting a solution containing N,N-dimethylacetamide/lithium chloride(DMAc/LiCl)-soluble MCC and DMAcdispersible MXene nanosheets,followed by humidity control *** MXene nanosheets greatly enhanced the permittivity of the nanocomposite films owing to interfacial ***,the nanocomposite film with 20 wt.%MXene content achieved a desirable permittivity of 71.4 at 102 Hz(a 770%improvement against that of neat cellulose),while the dielectric loss only increased by 1.8 times(from 0.39 to 0.70).The obtained nanocomposite films with 20 wt.%and 30 wt.%MXene exhibited remarkable in-plane thermal conductivities of 8.523 and 9.668 W∙m^(−1)∙K^(−1),respectively,owing to the uniform dispersion and selfalignment of the MXene layered ***,the uniformly dispersed MXene nanosheets in the MCC network with interfacial interaction(hydrogen bonding)and mechanical entanglement endowed the nanocomposite films with excellent mechanical properties and ***,the thermal stability,water resistance,and antibacterial properties of the nanocomposite films were effectively improved with the introduction of ***,using DMAc/LiCl as the solvent system not only improves the compatibility between MCC and MXene but also avoids the problem of easy oxidation of MXene in aqueous *** the high stability of the MCC–MXene solution and enhanced properties of the MCC–MXene films,the proposed strategy manifests great potential for fabricating natural biomass-based dielectric materials.

关键词： Ti_(3)C_(2)T_(x) microcrystalline cellulose flexible dielectric thermally conductive N,N-dimethylacetamide/lithium chloride(DMAc/LiCl) compatibility

Potentiostatic corrosion protection technology under cavitation condition for 5083-H116 Al alloy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals Society of China 2013年第11期23卷 3206-3214页

作者： Seung-jun LEE Young-Soo PARK seong-Jong KIM Division of Marine Engineering Mokpo Maritime University Division of Maritime Transportation Science College of Maritime Sciences Korea Maritime and Ocean University

This study aims to characterize the cavitation damage behavior of aluminum alloys in seawater and thus to enhance its cavitation resistance. Potentiostatic experiments were performed under various potential conditions to determine the optimum protection potentials, at which cavitation damage was suppressed. A potential range was selected for the experiment from -2.2 to -1.4 V, which corresponded to the concentration and activation polarization regions on the cathodic polarization curve of the 5083-H116 alloy. After the experiments, the current density-time behavior was investigated, and the degree of surface damage was observed using three-dimensional microscopy and scanning electron microscopy （SEM）, The optimum protection potential was determined to be in the range of-l.9 to -1.5 V under which the cavitation damage was reduced significantly.

关键词： Al alloy cavitation potentiostatic experiment seawater

Cavitation and electrochemical characteristics of thermal spray coating with sealing material

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

Transactions of Nonferrous Metals Society of China 2013年第4期23卷 1002-1010页

作者： seong-Jong KIM Seung-jun LEE In-Ju KIM seong-Kweon KIM Min-Su HAN Seok-Ki JANG Division of Marine Engineering Mokpo Maritime UniversityHaeyangdaehak-ro 91 Mokpo-Si530-729Korea Korea Institute of Industrial Technology 89 Yangdaegiro-gilIpjang-myeonSeobuk-guCheonan-Si331-822Korea Department of Electronic IT Media Engineering Seoul National University of Science & Technology138 Gongneung-gilNowon-gu Seoul139-743Korea

Steel applied in ocean environment is exposed to corrosion and cavitation and is subject to increasing damages. To prevent this, anti-corrosion thermal spray coating technique is widely used. The low-temperature thermal spray coating was performed with 85%Al-14.5%Zn-0.5%Zr for ship materials and various sealing materials were applied to improve its durability, and the electrochemical behavior and cavitation characteristics were observed. The results show that the sealing improves all the properties of the materials. Hybrid ceramic and fluoro-silicon sealing materials show good electrochemical characteristics, and the fluoro-silieon sealing material shows the best anti-cavitation characteristics.

关键词： thermal spray coating sealing material cavitation electrochemical characteristics

Mitochondrial Reactive Oxygen Species Elicit Acute and Chronic Itch via Transient Receptor Potential Canonical 3 Activation in Mice

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

Neuroscience Bulletin 2022年第4期38卷 373-385页

作者： seong-Ah Kim jun Ho Jang Wheedong Kim Pa Reum Lee Yong Ho Kim Hue Vang Kihwan Lee Seog Bae Oh Department of Neurobiology and Physiology School of Dentistry and Dental Research InstituteSeoul National UniversitySeoul 03080Republic of Korea Department of Brain and Cognitive Sciences College of Natural SciencesSeoul National UniversitySeoul 08826Republic of Korea Gachon Pain Center and Department of Physiology College of MedicineGachon UniversityIncheon 21999Republic of Korea Tooth-Periodontium Complex Medical Research Center School of DentistrySeoul National UniversitySeoul 03080Republic of Korea

Mitochondrial reactive oxygen species(mROS)that are overproduced by mitochondrial dysfunction are linked to pathological conditions including sensory ***,we explored whether mROS overproduction induces itch through transient receptor potential canonical 3(TRPC3),which is sensitive to *** injection of antimycin A(AA),a selective inhibitor of mitochondrial electron transport chain complex III for mROS overproduction,produced robust scratching behavior in naïve mice,which was suppressed by MitoTEMPO,a mitochondria-selective ROS scavenger,and Pyr10,a TRPC3-specific blocker,but not by blockers of TRPA1 or *** activated subsets of trigeminal ganglion neurons and also induced inward currents,which were blocked by MitoTEMPO and ***,dry skin-induced chronic scratching was relieved by MitoTEMPO and Pyr10,and also by resveratrol,an *** together,our results suggest that mROS elicit itch through TRPC3,which may underlie chronic itch,representing a potential therapeutic target for chronic itch.

关键词： Mitochondria Reactive oxygen species TRPC3 Itch Dry skin Trigeminal ganglia

Predictors and prognostic impact of post-operative atrial fibrillation in patients with hip fracture surgery

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 2022年第11期10卷 3379-3388页

作者： seong jun Bae chang Hee Kwon Tae-Young Kim Haseong chang Bum Sung Kim Sung Hea Kim Hyun-Joong Kim Department of Internal Medicine Konkuk University Medical CenterSeoul 05030South Korea Department of Orthopaedic Surgery Konkuk University Medical CenterSeoul 05030South Korea

BACKGROUND Atrial fibrillation(AF)is the most common arrhythmia developing in postoperative *** data are available regarding pre-operative risk factors and prognostic impact of post-operative AF(POAF)following hip fracture surgery(HFS)in Korean *** We aimed to investigate the incidence,predictors,and hospital prognosis of POAF in HFS *** This study included 245 patients without history of AF who underwent HFS between August 2014 and November *** was defined as new-onset AF that occurred during hospitalization after *** Twenty patients(8.2%)experienced POAF after *** developed on median post-operative day 2(interquartile range,1–3).Multivariable logistic regression analysis showed that age[odds ratio(OR),1.111;95%confidence interval(CI),1.022–1.209],chronic obstructive pulmonary disease(COPD)(OR,6.352;95%CI,1.561–25.841)and E/e’ratio(OR,1.174;95%CI,1.002–1.376)were significant predictors of *** with POAF had a significantly higher intensive care unit admission rate(55.0%vs 14.7%,P<0.001)and incidence of congestive heart failure(45.0%vs 10.7%,P<0.001).In multivariable logistic regression analysis,POAF was significantly associated with increased incidence of congestive heart failure(OR,4.856;95%CI,1.437–16.411)and intensive care unit admission(OR,6.615;95%CI,2.112–20.718).CONCLUSION POAF was frequently developed in elderly patients following ***,COPD and elevated E/e’ratio were found as significant predictors of POAF in HFS *** with POAF significantly experienced intensive care unit admission and incident congestive heart failure during hospitalization.

关键词： Atrial fibrillation Post-operative Predictor Prognosis Hip fracture surgery

Role of neoadjuvant therapy for nonmetastatic pancreatic cancer:Current evidence and future perspectives

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 Gastrointestinal Oncology 2023年第6期15卷 911-924页

作者： Gianluca Cassese Ho-seong Han Yoo-Seok Yoon jun Suh Lee Boram Lee Antonio Cubisino Fabrizio Panaro Roberto Ivan Troisi Department of Clinical Medicine and Surgery Division of Minimally Invasive HPB Surgery and Transplantation ServiceFederico II University HospitalNaples 80131Italy Department of Surgery Seoul National University College of MedicineSeongnam 13620Gyeonggi-doSouth Korea Department of HPB Surgery and Transplantation Beaujon HospitalClichy 92110France Department of Digestive Surgery and Liver Transplantation CHU MontpellierMontpellier 34100France

Pancreatic adenocarcinoma(PDAC)is one of the most common and lethal human cancers *** followed by adjuvant chemotherapy offers the best chance of a long-term survival for patients with PDAC,although only approximately 20%of the patients have resectable tumors when *** chemotherapy(NACT)is recommended for borderline resectable pancreatic *** studies have investigated the role of NACT in treating resectable tumors based on the recent advances in PDAC biology,as NACT provides the potential benefit of selecting patients with favorable tumor biology and controls potential micro-metastases in high-risk patients with resectable *** such challenging cases,new potential tools,such as ct-DNA and molecular targeted therapy,are emerging as novel therapeutic options that may improve old *** review aims to summarize the current evidence regarding the role of NACT in treating non-metastatic pancreatic cancer while focusing on future perspectives in light of recent evidence.

关键词： Pancreatic cancer Pancreatic duct adenocarcinoma Neoadjuvant chemotherapy Borderline resectable Locally advanced pancreatic cancer

Hybrid natural orifice transluminal endoscopic surgery in gastric subepithelial tumors

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 Gastrointestinal Endoscopy 2013年第9期5卷 428-432页

作者： jun Heo seong Woo Jeon Department of Internal Medicine Kyungpook National University School of Medicine

Diagnosis of gastric subepithelial tumor(SET) has shown a rapid increase ***,until now,endoscopic ultrasound guided procedures such as fine needle aspiration have shown relatively high accuracy in diagnosis of SET,the most important modality for diagnosis and treatment of SETs is complete resection such as endoscopic or surgical ***,endoscopic resection or laparoscopic wedge resection alone also has some *** resection is difficult to perform in cases of gastric SET located within deep portion of the gastric layer or a relatively large(larger than 25 mm diameter).On the other hand,gastric SET in a difficult location,such as the gastroesophageal junction or pyloric ring is challenging for laparoscopic surgical *** hybrid natural orifice transluminal endoscopic surgery(NOTES) technique is a combined method,including the advantages of both laparoscopic resection and endoscopic resection for gastric *** method may be performed safely with reasonable operation times,less bleeding,and adequate resection margin and regardless of tumor *** particular,in the case of a difficult location for resection,such as the esophagogastric junction or pyloric ring,hybrid NOTES is currently believed to be an ideal treatment method.

关键词： Subepithelial tumor Hybrid natural orifice transluminal endoscopic surgery Endoscopic ultrasound

Development and validation of a clinical nomogram predicting bladder outlet obstruction via routine clinical parameters in men with refractory nonneurogenic lower urinary tract symptoms

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5期21卷 486-492页

作者： Young Ju Lee jung Keun Lee jung jun Kim Hak Min Lee Jong Jin Oh Sangchul Lee Sang Wook Lee Jeong Hyun Kim seong Jin Jeong Department of Urology Seoul National University Bundang HospitalSeongnam 13620Korea Department of Urology Kangwon National University School of MedicineChuncheon 24341Korea

We aimed to develop and validate a clinical nomogram predicting bladder outlet obstruction(BOO)solely using routine clinical parameters in men with refractory nonneurogenic lower urinary tract symptoms(LUTS).A total of 750 eligible patient ≥50 years of age who had previously not responded(International Prostate Symptom Score[IPSS]improvement2 cmH20 ml^-1 s^-1.A stepwise multivariable logistic regression analysis was conducted to determine the predictors of BOO,and^-coefficients of the final model were selected to create a clinical *** final multivariable logistic regression model showed that age,IPSS,maximum urinary flow rate,postvoid residual volume,total prostate volume,and transitional zone index were significant for predicting BOO;these candidates were used to develop the final *** discrimination performance of the nomogram was 88.3%(95%Cl:82.7%-93.0%,P<0.001),and the nomogram was reasonably we 11-fitted to the ideal line of the calibration *** nt split-sample validation revealed 80.9%(95%Cl:75.5%-84.4%,P<0.001)*** proposed BOO nomogram based solely on routine clinical parameters was accurate and validated *** nomogram may be useful in determining further treatment,primarily focused on prostatic surgery for BOO,without impeding the detection of possible BOO in men with LUTS that is refractory to empirical medications.

关键词： benign prostatic hyperplasia bladder outlet obstruction lower urinary tract symptoms no mogram urodynamics

Aralia elata inhibits neurodegeneration by downregulating O-GlcNAcylation of NF-κB in diabetic mice

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2017年第8期10卷 1203-1211页

作者： seong-Jae Kim Min-jun Kim Mee- Young Ckoi Yoon-Sook Kim Ji-Myong Yoo Eun-Kyung Hong Sunmi Ju Wan-Sung Choi Department of Ophthalmology School of MedicineGyeongsang National University Jinju 52727 Korea Department of Anatomy and Convergence Medical Science School of Medicine Gyeongsang National University Jinju52727 Korea Institute of Health Science Gyeongsang National UniversityJinju 52727 Korea Medvill Co. Ltd. Seoul 08511 Korea Division of Pulmonology and Allergy Department ofInternal Medicine School of Medicine Gyeongsang NationalUniversity Jinju 52727 Korea

AIM： To investigate the role of O-GIcNAcylation of nuclear factor-kappa B （NF-KB） in retinal ganglion cell （RGC） death and analysedthe effect of Aralia elata （AE） on neurodegen- eration in diabetic mice. METHODS： C57BL/6mice with streptozotocin-induced diabetes were fed daily with AE extract or control （CTL） diet at the onset of diabetes mellitus （DM）. Two months af- tar injection of streptozotocin or saline, the degree of cell death and the expression of O-GIcNAc transferase （OGT）, N-acetyl-b-D-glucosaminidase （OGA）, O-GIcNAcylated pro- teins, and O-GIcNAcylation of NF-KB were examined. RESULTS： AE did not affect the metabolic status of diabetic mice. The decrease in the inner retinal thickness （P〈0.001 vs CTL, P〈0.01 vs DM） and increases in RGCs with terminal deoxynucleotidyl transferase-mediated dUTP nick end labelling （P〈0.001 vs CTL, P〈0.0001 vs DM）, glial activation, and active caspase-3 （P〈0.0001 vs CTL, P〈0.0001 vs DM） were blocked in diabetic retinas of AE extract-fed mice. Expression levels of protein O-GIcNAcylation and OGT were increased in diabetic retinas （P〈0.0001 vs CTL）, and the level of O-GIcNAcylation of the NF-KB p65 subunit was higher in diabetic retinas than in controls （P〈0.0001 vs CTL）. AE extract downregulated O-GIcNAcylation of NF-KB and prevented neurodegeneration induced by hyperglycemia （P〈0.0001 vs DM）. CONCLUSION： O-GIcNAcylation of NF-KB is concerned in neuronal degeneration and that AE prevents diabetes-in- duced RGC apoptosis via downregulation of NF-KB O-GI- cNAcylation. Hence, O-GIcNAcylation may be a new object for the treatment of DR, and AE may have therapeutic pos- sibility to prevent diabetes-induced neurodegeneration.

关键词： Aralia elata diabetic retinopathy neurode- generation nuclear factor-kappa B O-GlcNAc O-GlcNAc transferase mice