检索结果-南通市图书馆

Coupling Co2P nanoparticles onto N,P-doped biomass-derived carbon as efficient electrocatalysts for flexible Zn–air batteries

引用

Rare Metals 2024年第10期43卷 4982-4991页

作者： Shu-Qi Li Kang Sun Yan-Yan Liu Shu-Ling Liu Jing-Jing Zhou Wen-Bo Zhang Yi-Hang Lu Xiang-Meng Chen xiao-peng wang Bao-Jun Li Jian-Chun Jiang College of Science Henan Agricultural University Department of Chemistry Tsinghua University College of Chemistry Zhengzhou University Institute of Chemical Industry of Forest Products National Engineering Lab for Biomass Chemical UtilizationKey and Open Lab on Forest Chemical EngineeringChinese Academy of ForestryState Forestry Administration

Catalysts for oxygen conversion play an important role in energy storage and conversion technologies such as metal-air *** highly active stable,and low-cost catalysts is critical for further implementation of the above ***,an efficien oxygen electrocatalyst with Co2P nanoparticles （NPs）coupling onto N,P-doped porous carbon nanosheets（Co2P@NPAC） derived from cotton stalk is successfully designed and prepared via activation,hydrothermal treatment,and pyrolysis *** excellent properties of electrical conductivity,mass transfer,and synergistic integration between Co2P and N,P-doped carbon endow Co2P@NPAC composite with superior oxygen reduction reaction/oxygen evolution reaction （ORR/OER） ***2P@NPAC catalyst achieves ORR activity with half-wave potential of 0.85 V and high OER activity with overpotential of 261 mV at 10 mA·*** flexible Zn-air batteries （ZABs） based on Co2P@NPAC catalyst revea outstanding performances with a high open-circuit voltage（1.38 V）,a peak power density of (75 mW·cm-2),and a low charge-discharge voltage gap （0.74 V,～200 cycles）The flexible ZABs express the stable discharge-charge voltage gap at various bending *** work provides interesting inspiration for the ingenious design of efficien carbon electrocatalysts from biomass with potential application of energy storage and conversion devices.

关键词： Cotton stalk Flexible Zn–air batteries N,P-doped activated carbon Oxygen reduction reaction

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Whole-volume histogram analysis of spectral-computed tomography iodine maps characterizes HER2 expression in gastric cancer

引用

World Journal of Gastroenterology 2024年第38期30卷 4211-4220页

作者： Wei-Ling Zhang Jing Sun Rong-Fang Huang Yi Zeng Shu Chen xiao-peng wang Jin-Hu Chen Yun-Bin Chen Chun-Su Zhu Zai-Sheng Ye You-Ping xiao Department of Radiology Clinical Oncology School of Fujian Medical University&Fujian Cancer Hospital(Fujian Branch of Fudan University Affiliated Cancer Hospital)Fuzhou 350014Fujian ProvinceChina Department of Pathology Clinical Oncology School of Fujian Medical University&Fujian Cancer Hospital(Fujian Branch of Fudan University Affiliated Cancer Hospital)Fuzhou 350014Fujian ProvinceChina Department of Gastric Surgery Clinical Oncology School of Fujian Medical University&Fujian Cancer Hospital(Fujian Branch of Fudan University Affiliated Cancer Hospital)Fuzhou 350014Fujian ProvinceChina Department of Epidemiology Clinical Oncology School of Fujian Medical University&Fujian Cancer Hospital(Fujian Branch of Fudan University Affiliated Cancer Hospital)Fuzhou 350014Fujian ProvinceChina

BACKGROUND Although surgery remains the primary treatment for gastric cancer(GC),the identification of effective alternative treatments for individuals for whom surgery is unsuitable holds ***2 overexpression occurs in approximately 15%-20%of advanced GC cases,directly affecting treatment-related ***-computed tomography(sCT)enables the quantification of material compositions,and sCT iodine concentration parameters have been demonstrated to be useful for the diagnosis of GC and prediction of its invasion depth,angioge-nesis,and response to systemic *** existing report describes the prediction of GC HER2 status through histogram analysis based on sCT iodine maps(IMs).AIM To investigate whether whole-volume histogram analysis of sCT IMs enables the prediction of the GC HER2 *** This study was performed with data from 101 patients with pathologically confirmed GC who underwent preoperative sCT *** parameters were extracted via sCT IM histogram analysis:The minimum,maximum,mean,standard deviation,variance,coefficient of variation,skewness,kurtosis,entropy,percentiles(1st,5th,10th,25th,50th,75th,90th,95th,and 99th),and lesion *** correlations of the parameters with the HER2 status and clinicopathological parameters were *** operating characteristic curves were used to evaluate the parameters’diagnostic *** Values for the histogram parameters of the maximum,mean,standard deviation,variance,entropy,and percentiles were significantly lower in the HER2+group than in the HER2–group(all P<0.05).The GC differentiation and Lauren classification correlated significantly with the HER2 status of tumor tissue(P=0.001 and 0.023,respectively).The 99th percentile had the largest area under the curve for GC HER2 status identification(0.740),with 76.2%,sensitivity,65.0%specificity,and 67.3%*** sCT IM histogram parameters correlated positively with the GC HER2 status(r=0.

关键词： Gastric cancer Spectral computed tomography Iodine map Histogram analysis

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

Processing and oxidation of co-deposited Ni-Al coatings

引用

中国有色金属学会会刊：英文版 2004年第Z1期14卷 199-203页

作者： ZHOU Yue-bo peng xiao wang Fu-hui State Key Laboratory for Corrosion and Protection Institute of Metal ResearchChinese Academy of Sciences Shenyang 110016 China State Key Laboratory for Corrosion and Protection Institute of Metal ResearchChinese Academy of Sciences Shenyang 110016 China State Key Laboratory for Corrosion and Protection Institute of Metal ResearchChinese Academy of Sciences Shenyang 110016 China

Electrodeposited Ni matrix/Al microparticles or nanoparticles dispersed composite coatings (termed as EMCCs or ENCCs) are developed from a Ni-based electrolyte bath. The Al microparticles are in a size range of 1 -5 μm and the Al nanoparticles in an average size of 75 nm. The Al content in coatings increases with increase in the particle content in the bath. Particle size effect on the degree of codeposition is not significant. However, codeposition of Al nanoparticles instead of microparticles promotes more homogenous growth of Ni deposits on {111}, {200} and {220} planes. The oxidation at 1 050 ℃ of the as-deposited composite coatings shows that at a comparable Al content, ENCC of Ni-Al exhibits a better oxidation resistance than EMCC of Ni-Al due to the fast formation of an alumina scale during the transient stage of oxidation.

关键词： electrodeposition co-deposition Ni-Al composite coating high temperature oxidation microparticle nanoparticle

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

Microstructure and high-temperature tensile property of TiAl alloy produced by selective electron beam melting

引用

Rare Metals 2021年第12期40卷 3635-3644页

作者： Hang-Yu Yue Hui peng Yong-Jun Su xiao-peng wang Yu-Yong Chen School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China Key Laboratory of High-Temperature Structural Materials and Coatings Technology Ministry of Industry and Information TechnologyBeihang UniversityBeijing 100191China School of Materials Science and Engineering Beihang UniversityBeijing 100191China Department of Mechanics College of EngineeringLishui UniversityLishui 323000China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China

The microstructure and high-temperature tensile property of a Ti-47Al-2Cr-2 Nb alloy fabricated via selective electron beam melting(SEBM) with hatch spacings of 85,100,and 115 μm were systematically *** the hatch spacing increased from 85 to 115 μm,the microstructure comprising the horizontal cross section changed from coarse lamellar(y/B2) colonies to an inhomogeneous structure and the grain morphology transformed from elongated grains to inhomogeneous and equiaxed grains along the building direction of the vertical cross *** boundary population of the SEBMproduced TiAl alloy samples was dominated by high-angle grain boundaries(≥ 15°),and the volume fraction of these boundaries decreased with hatch spacing ***,the as-built TiAl alloy sample produced under a spacing of 100 μm exhibited the highest room-and elevated-temperature tensile strengths,with the ultimate tensile strength at room temperature(642 MPa) increasing to 674 MPa at 700 ℃.Furthermore,the mechanism of anomalous strengthening at 700 ℃ was discussed in detail.

关键词： Selective electron beam melting TiAl alloy Hatch spacing Microstructure Tensile property

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

Dual-modal Physiological Feature Fusion-based Sleep Recognition Using CFS and RF Algorithm

引用

International Journal of Automation and computing 2019年第3期16卷 286-296页

作者： Bing-Tao Zhang xiao-peng wang Yu Shen Tao Lei School of Electronic and Information Engineering Lanzhou Jiaotong UniversityLanzhou 730070China Key Laboratory of Opto-technology and Intelligent Conrtol Ministry of Education Lanzhou Jiaotong UniverstiyLanzhou 730070China School of Information Science and Engineering Lanzhou UniversityLanzhou 730000China College of Electronical and Information Engineering Shaanxi University of Science and TechnologyXi'an 710021China

Research has demonstrated a significant overlap between sleep issues and other medical *** this paper,we consider mild difficulty in falling asleep(MDFA).Recognition of MDFA has the potential to assist in the provision of appropriate treatment plans for both sleep issues and related medical *** issue in the diagnosis of MDFA lies in *** address this issue,a decision support tool based on dual-modal physiological feature fusion which is able to automatically identify MDFA is proposed in this *** attention is given to the problem of how to extract candidate features and fuse dual-modal *** the identification of the optimal feature set,this study considers the correlations between each feature and class and evaluates correlations between the inter-modality ***,the recognition accuracy was measured using 10-fold cross *** experimental results for our method demonstrate improved *** highest recognition rate of MDFA using the optimal feature set can reach 96.22%.Based on the results of current study,the authors will,in projected future research,develop a real-time MDFA recognition system.

关键词： Feature fusion mild difficulty in falling asleep(MDFA) decision support tool sleep issues optimal feature set

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

Microstructure and properties of a beta-solidifying TiAl-based alloy with different refiners

引用

Rare Metals 2016年第1期35卷 42-47页

作者： Ning Cui xiao-peng wang Fan-Tao Kong Yu-Yong Chen Hai-Tao Zhou School of Materials Science and Engineering Harbin Institute of Technology State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology

This study systematically compared the influences of yttrium（Y）,boron（B）,and carbon（C） on the microstructural refinement and properties of a Ti-43Al-5Nb *** microstructural refinement effect in the TiAl alloy closely depends on the refiner *** refinement effects of the three elements on colony size and lamellar thickness can be arranged as B 〉 Y 〉 C and Y 〉 C 〉 B,***,a microstructure with a small grain size and ultra-fine lamellar spacing can be obtained by adding B and Y or B and *** mechanical properties of TiAl alloy are also influenced by the *** alloys with proper B and Y contents exhibit favorable hot workability,tensile properties,and fracture toughness,whereas the C-containing alloy displays poor tensile properties and low fracture *** results indicate that Y and B are more suitable microstructure refiners than *** study may serve as a reference for practical alloying design.

关键词： TiAl alloy Refinement Toughness Tensileproperties Workability

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

Suppressive effect of Aurantii Fructus Immaturus and Atractylodis Macrocephalae Rhizoma on glutamic acid-induced autophagy of interstitial cells of Cajal

引用

Journal of Integrative Medicine 2020年第4期18卷 334-343页

作者： Shuai Yan Yin-zi Yue Ming-ming Sun Ben-sheng Wu xiao-peng wang Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica School of PharmacyNanjing University of Chinese MedicineNanjing 210023Jiangsu ProvinceChina Department of Anorectal Surgery Suzhou TCM HospitalNanjing University of Chinese MedicineSuzhou 215009Jiangsu ProvinceChina First Clinical Medical School Nanjing University of Chinese MedicineNanjing 210023Jiangsu ProvinceChina

Objective:To investigate the effects of Aurantii Fructus Immaturus(Zhishi,ZS)and Atractylodis Macrocephalae Rhizoma(Baizhu,BZ)-containing serum on glutamate-induced autophagy in rat colonic interstitial cells of Cajal(ICCs)and to analyze the underlying ***:Rat colonic ICCs cultured in vitro were identified by fluorescence and then stimulated with glutamic acid(5 mmol/L)for 24 h to establish a cell model of *** cells were then treated with different concentrations of ZSBZ-containing serum or rat *** viability of the ICCs was detected with cell counting kit-8 assays,and cell apoptosis rates were examined with flow *** ultrastructure and autophagosomes in the ICCs were observed using transmission electron *** effects of ZSBZ-containing serum on apoptosis-associated mediators were assessed by Western blotting and real-time quantitative polymerase chain *** addition,microtubule-associated protein light chain 3(LC3),p-phosphoinositide 3-kinase(p-PI3 K),p-Akt and p-mammalian target of rapamycin(pm TOR)expression was detected via Western blotting ***:Compared to those in the model group,ICC viability and apoptosis rates were significantly increased by ZSBZ-containing serum(P<0.05).In addition,the expression levels of Beclin-1,LC3,pPI3 K,p-Akt and p-mTOR were significantly lower(P<0.05)and Bcl-2 expression was higher in the ZSBZ-containing serum treatment groups than in the model group(P<0.05).Conclusion:Our findings demonstrated that ZSBZ protects glutamic acid-stimulated ICCs,and this beneficial effect may be mediated by a reduction in autophagy via inhibition of the PI3 K/Akt/mTOR pathway.

关键词： Herbal medicine,Chinese Autophagy Phosphoinositide 3-kinase Signal pathway

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

Endoscopic pancreaticobiliary drainage with overlength stents to prevent delayed perforation after endoscopic papillectomy:A pilot study

引用

World Journal of Gastroenterology 2020年第44期26卷 7036-7045页

作者： Liang Wu Fang Liu Nan Zhang xiao-peng wang Wen Li International Center for Diagnosis and Treatment of Liver Diseases The Fifth Medical Center of Chinese PLA General HospitalBeijing 100039China Department of Gastroenterology and Hepatology The First Medical Center of Chinese PLA General HospitalBeijing 100853China Department of Gastroenterology and Hepatology Chinese PLA 305 HospitalBeijing 100017China

BACKGROUND Endoscopic papillectomy(EP)is rapidly replacing traditional surgical resection and is a less invasive procedure for the treatment of duodenal papillary tumors in selected *** the expansion of indications,concerns regarding EP include not only technical difficulties,but also the risk of complications,especially delayed duodenal *** perforation after EP is a rare but fatal *** of the artificial ulcer to bile and pancreatic juice is considered to be one of the causes of delayed perforation after *** bile and pancreatic juice away from the wound may help to prevent delayed *** To evaluate the feasibility and safety of placing overlength biliary and pancreatic stents after *** This is a single-center,retrospective *** patients with exposure or injury of the muscularis propria after EP were included.A 7-Fr overlength biliary stent and a 7-Fr overlength pancreatic stent,modified by an endoscopic nasobiliary drainage tube,were placed in the common bile duct and pancreatic duct,respectively,and the bile and pancreatic juice were drained to the proximal *** EP and overlength stents placement were technically feasible in all five patients(63±12 years),with an average operative time of 63.0±5.6 *** the five lesions(median size 20 mm,range 15-35 mm),four achieved en bloc excision and curative *** final histopathological diagnoses of the endoscopic specimen were one tubular adenoma with high-grade dysplasia(HGD),one tubulovillous adenoma with low-grade dysplasia,one hamartomatous polyp with HGD,one poorly differentiated adenocarcinoma and one atypical juvenile polyposis with tubulovillous adenoma,HGD and field cancerization invading the muscularis mucosae and *** were no stent-related complications,but one papillectomy-related complication(mild acute pancreatitis)occurred without any episodes of bleeding,perforation,cholangitis or late-onset duct stenosis.

关键词： Endoscopic papillectomy Major duodenal papilla Delayed perforation Overlength stent Endoscopic retrograde cholangiopancreatography Duodenal papillary tumors

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

Magnetic resonance imaging findings for differential diagnosis of perianal plexiform schwannoma: Case report and review of the literature

引用

World Journal of Clinical Cases 2018年第5期6卷 88-93页

作者： Xue-Liang Sun Ke Wen Zhi-Zhong Xu xiao-peng wang Department of Colorectal Surgery the Suzhou Affiliated Hospital of Nanjing University of Chinese Medicine

Plexiform schwannoma is an extremely rare variant of schwannoma, accounting for approximately 5% of cases. Due to the rarity and lack of typical symptoms, signs and radiological images, a definite diagnosis of plexiform schwannoma may not be made by clinicians prior to biopsy. In the present study, we report the first case(to our knowledge) of perianal plexiform schwannoma arising from the overlapped skin of the ischioanal fossa, and we propose an intratumorally nonenhanced circumferential capsule dividing the tumour into multiple homogeneously enhanced nodules as a magnetic resonance imaging feature to aid in the differential diagnosis of plexiform schwannoma from ancient schwannoma, cavernous haemangioma, liposarcoma and plexiform neurofibroma.

关键词： Plexiform schwannoma Magnetic resonance imaging Perianal Bascom cleft lift Diagnosis

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

On the Factors Influencing the High Stretch-Flangeability of a Low-Density 1180 MPa Fe-Mn-Al-C-Nbδ-QP Steel

引用

Acta Metallurgica Sinica(English Letters) 2024年第8期37卷 1291-1300页

作者： Dan‑Dan Cui peng Chen peng‑Fei wang xiao‑Wu Li Department of Materials Physics and Chemistry School of Materials Science and Engineeringand Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education)Northeastern UniversityShenyang 110819China State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China

Low-densityδ-quenching and partitioning(δ-QP)steels with excellent strength and ductility have been recently ***,there are still rare reports on the formability of δ-QP steels,which are critical for satisfying the manufacture of structural parts during the application in automotive *** the present work,an 1180 MPa Fe–Mn–Al–C–Nbδ-QP steel with a high ductility was adopted for the stretch–flangeability ***δ-QP steel was developed by separated quenching and partitioning processes.A good hole expansion ratio(HER)of 34.9±0.9%was obtained in the quenched steel,but it has been further increased to 52.2%by the tempering *** improved stretch–flangeability was attributed to the enhanced austenite stability and deformation *** the one hand,the stability of austenite was increased by carbon partitioning during tempering,which reduced crack possibility via the suppression of the fresh martensite *** the other hand,the tempering treatment released the internal stress caused by martensitic transformation and reduced the difference in strength among different phases,resulting in an increase in the resistance to crack initiation and propagation.

关键词： Hole expansion ratio Low-densityδ-quenching and partitioning(δ-QP)steel Stretch-flangeability Austenite stability Deformation uniformity

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

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：