检索结果-南通市图书馆

The Role of Renewable Protocatechol Acid in Epoxy Coating Modification: Significantly Improved Antibacterial and Adhesive Properties

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 Polymer Science 2024年第1期42卷 63-72,I0008页

作者： Ming-xuan Chen Jin-Yue Dai Li-Yue Zhang Shuai-Peng Wang Jing-Kai Liu Yong-Gang Wu Xin-Wu ba Xiao-Qing Liu School of Chemistry and Materials Science Hebei UniversityBaoding 071000China Ningbo Institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo 315201China Key Laboratory of Marine Materials and Related Technologies Chinese Academy of SciencesNingbo 315201China

It is of great significance to design epoxy coatings with superior antibacterial properties and high adhesive properties, as well as excellent processing, superior durability, and high transparency. However, it is still a challenge because of the common complex design and synthesis. Herein, the bio-based monomer protocatechuic acid(PCA) was used as raw material, the catechol structure with high bonding and antibacterial properties was introduced into the flexible alkane segment of ethylene glycol diglycidyl ether(EGDE) through an efficient, and green method, and it was cured with isophorone diamine(IPDA) to prepare corresponding thermosets. The cured resins exhibited excellent allaround qualities, particularly in bonding and antibacterial. When 30% PCA was added to pure epoxy resin, the adhesion between substrate and coating increased from 4.40 MPa to 13.60 MPa and the antibacterial rate of coating against E. coli and S. aureus could approach 100%. All of this is due to the fact that the catechol structure present in PCA has the ability to interact with various substrates and alter the permeability of bacterial cell membranes. The architecture of this method offers a fresh approach to dealing with the issues of challenging raw material selection and complex synthesis techniques.

关键词： Epoxy coatings Thermosets Catechol structure Antibacterial High adhesion

Efficient solar-driven CO_(2)-to-fuel conversion via Ni/MgAlO_(x)@SiO_(2)nanocomposites at low temperature

在线全文

学校读者我要写书评

暂无评论

Fundamental Research 2024年第1期4卷 131-139页

作者： Xianglei Liu Yueyue Ling Chen Sun Hang Shi Hangbin Zheng Chao Song Ke Gao Chunzhuo dang Nan Sun Yimin xuan Yulong Ding School of Energy and Power Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Birmingham Centre for Energy Storage School of Chemical EngineeringUniversity of BirminghamBirmingham B152TTUnited Kingdom

Solar-driven CO_(2)-to-fuel conversion assisted by another major greenhouse gas CH_(4)is promising to concurrently tackle energy shortage and global warming ***,current techniques still suffer from drawbacks of low efficiency,poor stability,and low ***,a novel nanocomposite composed of interconnected Ni/MgAlOx nanoflakes grown on SiO_(2)particles with excellent spatial confinement of active sites is proposed for direct solar-driven CO_(2)-to-fuel *** ultrahigh light-to-fuel efficiency up to 35.7%,high production rates of H_(2)(136.6 mmol min^(-1)g^(-1))and CO(148.2 mmol min^(-1)g^(-1)),excellent selectivity(H_(2)/CO ratio of 0.92),and good stability are reported *** outstanding performances are attributed to strong metal-support interactions,improved CO_(2)absorption and activation,and decreased apparent activation energy under direct light ***_(x)@SiO_(2)support helps to lower the activation energy of CH^(*) oxidation to CHO^(*) and improve the dissociation of CH_(4)to CH_(3)^(*) as confirmed by DFT ***,the lattice oxygen of MgAlO_(x) participates in the reaction and contributes to the removal of carbon *** work provides promising routes for the conversion of greenhouse gasses into industrially valuable syngas with high efficiency,high selectivity,and benign sustainability.

关键词： Solar fuel CO_(2)reduction Dry reforming of methane Photothermocatalysis Stability

Revealing the role of calcium ion intercalation of hydrated vanadium oxides for aqueous zinc-ion batteries

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 Energy Chemistry 2024年第8期95卷 9-19,I0001页

作者： Tao Zhou xuan Du Guo Gao Key Laboratory for Thin Film and Micro Fabrication of the Ministry of Education School of Sensing Science and EngineeringSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Exploring suitable high-capacity V_(2)O_(5)-based cathode materials is essential for the rapid advancement of aqueous zinc ion batteries(ZIBs).However,the typical problem of slow Zn^(2+)diffusion kinetics has severely limited the feasibility of such *** this work,unique hydrated vanadates(CaVO,baVO)were obtained by intercalation of Ca^(2+)or ba^(2+)into hydrated vanadium *** the CaVO//Zn and baVO//Zn batteries systems,the former delivered up to a 489.8 mAh g^(-1)discharge specific capacity at 0.1 A g^(-1).Moreover,the remarkable energy density of 370.07 Wh kg^(-1)and favorable cycling stability yard outperform baVO,pure V_(2)O_(5),and many reported cathodes of similar ionic intercalation *** addition,pseudocapacitance analysis,galvanostatic intermittent titration(GITT)tests,and Trasatti analysis revealed the high capacitance contribution and Zn^(2+)diffusion coefficient of CaVO,while an in-depth investigation based on EIS elucidated the reasons for the better electrochemical performance of ***,ex-situ XRD,XPS,and TEM tests further demonstrated the Zn^(2+)insertion/extraction and Zn-storage mechanism that occurred during the cycle in the CaVO//Zn battery *** work provides new insights into the intercalation of similar divalent cations in vanadium oxides and offers new solutions for designing cathodes for high-capacity aqueous ZIBs.

关键词： Aqueous zinc ion batteries Cathode materials Ion pre-intercalation Vanadium oxides Energy storage mechanism

Exponentially Bounded C-semigroup and the Cauchy Initial Value Problems in Complete Random Normed Modules

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2024年第9期40卷 2195-2212页

作者： Son TA CONG Thang dang HUNG Oanh Le THI Department of Mathematics University of ScienceVietnam National University 334 Nguyen TraiThanh XuanHanoiVietnam Faculty of Natural Sciences Hong Duc University565 Quang TrungDong VeThanh HoaVietnam

In this paper,the notion of C-semigroup of continuous module homomorphisms on a complete random normal(RN)module is introduced and *** existence and uniqueness of solution to the Cauchy problem with respect to exponen... 详细信息

关键词： C-semigroup Cauchy problem random normed modules L^(0)-Lipschitz

Effect of Freeze-Thaw and Urea in Solubility of GPC3-Csub Protein Expressed in Escherichia coli

在线全文

学校读者我要写书评

暂无评论

Journal of Biosciences and Medicines 2024年第4期12卷 288-297页

作者： xuan-Truc Chu-Dao Kim-Tuyen Huynh-Dam dang-Thuc Ngo-Luong Quang-Luan Le Thanh-Thao Vo-Nguyen Department of Medical Biotechnology Biotechnology Center of Ho Chi Minh City Ho Chi Minh City Vietnam

Glypican-3 is a protein encoded by the Glypican-3 gene located on human X chromosome (Xq26), composed of two subunits, a 40 kDa N-terminal subunit, and a 30 kDa C-terminal subunit. Glypican-3 is a currently potential target molecule for liver cancer treatments because of its over-expression and growth effects on hepatocellular carcinoma (HCC). This study examined the expression and purification of a C-terminal subunit of Glypican-3 protein (GPC3-Csub) due to its application in both diagnosis and therapy for hepatocellular carcinoma. The gene encoding for GPC3-Csub was successfully cloned into plasmid pET28a fused with an affinity tag composed of six consecutive histidine residues (His-tag). Recombinant protein GPC3-Csub was expressed in Escherichia coli BL21 (DE3) in the condition of adding 3% ethanol with IPTG induction. GPC3-Csub was extracted using repeated freeze-thaw cycles with lysozyme, and inclusion bodies were solubilized by 8M Urea, SDS 10% in pH 12. His-tag fused GPC3-Csub proteins allowed it to be purified by affinity chromatography method using the Nickel-nitrilotriacetic acid (Ni-NTA) column. High expression of GPC3-Csub was confirmed by Coomassie staining and western-blot. GPC3-Csub could be isolated with a Ni-NTA column and have a purity of about 90%.

关键词： Glypican-3 Affinity Chromatography Inclusion Body Liver 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

神经网络阻尼比模型及工业机器人导纳控制

机械设计与制造 2024年第7期 379-384页

作者：党选举牛嘉晨桂林电子科技大学电子工程与自动化学院广西桂林541004

在工业机器人打磨过程中,环境刚度随未知环境的变化,将对力控制精度产生不利的影响,针对环境刚度变化的问题,该文提出一种基于神经网络阻尼比模型的自适应导纳控制方法。在导纳控制设计中,根据力误差与系统阻尼比之间的机理关系,设计激... 详细信息

在工业机器人打磨过程中,环境刚度随未知环境的变化,将对力控制精度产生不利的影响,针对环境刚度变化的问题,该文提出一种基于神经网络阻尼比模型的自适应导纳控制方法。在导纳控制设计中,根据力误差与系统阻尼比之间的机理关系,设计激励函数,构造神经网络阻尼比模型;通过该模型使阻尼比在线调整,适应末端环境的刚度变化,实现力到位置自适应转换的导纳控制。与常规导纳控制进行仿真比较,结果表明所提出的力控制策略力误差更小,响应速度更快,能适应变刚度的未知打磨环境。

关键词：未知环境导纳控制神经网络阻尼比模型自适应控制工业机器人

在线全文

学校读者我要写书评

暂无评论

一种可验证的渐进式多秘密图像共享方案

价值工程 2024年第6期43卷 153-155页

作者：党旋西安培华学院西安710125

为了提高秘密图像共享方案的效率以及安全性,提出了一种可验证的渐进式多秘密图像共享方案。秘密图像共享中,通过生成的哈希值来进行秘密图像的验证。方案的恢复过程中,参与者的数量达到设定门限时可以恢复出第一张秘密图像;随着参与者... 详细信息

为了提高秘密图像共享方案的效率以及安全性,提出了一种可验证的渐进式多秘密图像共享方案。秘密图像共享中,通过生成的哈希值来进行秘密图像的验证。方案的恢复过程中,参与者的数量达到设定门限时可以恢复出第一张秘密图像;随着参与者的数量增多,其他秘密图像依次恢复出来,直至所有的秘密图像全部恢复出来。通过实验对比分析,所提出的方案能够对多秘密图像进行共享并验证,从而提高了秘密图像共享的效率。

关键词：多秘密图像共享可验证渐进式

维普期刊数据库博看期刊

Clinical manifestation,lifestyle,and treatment patterns of chronic erosive gastritis:A multicenter real-world study in China

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第9期30卷 1108-1120页

作者： Ying-Yun Yang Ke-Min Li Gui-Fang Xu Cheng-dang Wang Hua Xiong Xiao-Zhong Wang Chun-Hui Wang Bing-Yong Zhang Hai-Xing Jiang Jing Sun Yan Xu Li-Juan Zhang Hao-xuan Zheng Xiang-Bin Xing Liang-Jing Wang Xiu-Li Zuo Shi-Gang Ding Rong Lin Chun-Xiao Chen Xing-Wei Wang Jing-Nan Li Department of Gastroenterology Peking Union Medical College HospitalPeking Union Medical CollegeChinese Academy of Medical SciencesBeijing 100730China Department of Gastroenterology Nanjing Drum Tower HospitalNanjing 21000Jiangsu ProvinceChina Department of Gastroenterology The First Affiliated Hospital of Fujian Medical UniversityFuzhou 350005Fujian ProvinceChina Department of Gastroenterology Renji HospitalShanghai 200127China Department of Gastroenterology Union Hospital of Fujian Medical UniversityFuzhou 350000Fujian ProvinceChina Department of Gastroenterology West China Hospital of Sichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Gastroenterology and Hepatology The People’s Hospital of Zhengzhou UniversityThe Henan Provincial People’s HospitalZhengzhou 450003Henan ProvinceChina Department of Gastroenterology The First Affiliated Hospital of Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina Ruijin Hospital Shanghai Jiaotong University School of Medicine Shanghai Jiao Tong UnivesrityRuijin HospitalSchool MedicineShanghai 200025China Department of Gastroenterology and Hepatology China-Japan Union Hospital of Jilin UniversityChangchun 130033Jilin ProvinceChina Department of Gastroenterology Fujian Medical University Union HospitalFuzhou 350001Fujian ProvinceChina Department of Gastroenterology Nanfang HospitalGuangzhou 510080Guangdong ProvinceChina Department of Gastroenterology The First Affiliated HospitalSun Yat-sen UniversityGuangzhou 510080Guangdong ProvinceChina Department of Gastroenterology The Second Affiliated Hospital Zhejiang University School of MedicineHangzhou 310000Zhejiang ProvinceChina Department of Gastroenterology Shandong University Qilu HospitalJinan 250012Shandong ProvinceChina Department of Gastroenterology Peking University Third HospitalBeijing 100191China Department of Gastroenterology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022Hubei Pr

baCKGROUND Although chronic erosive gastritis(CEG)is common,its clinical characteristics have not been fully *** lack of consensus regarding its treatment has resulted in varied treatment *** To explore the clinical characteristics,treatment patterns,and short-term outcomes in CEG patients in *** We recruited patients with chronic non-atrophic or mild-to-moderate atrophic gastritis with erosion based on endoscopy and *** and treating physicians completed a questionnaire regarding history,endoscopic findings,and treatment plans as well as a follow-up questionnaire to investigate changes in symptoms after 4 wk of *** Three thousand five hundred sixty-three patients from 42 centers across 24 cities in China were *** pain(68.0%),abdominal distension(62.6%),and postprandial fullness(47.5%)were the most common presenting *** was classified as chronic non-atrophic in 69.9%of *** those with erosive lesions,72.1%of patients had lesions in the antrum,51.0%had multiple lesions,and 67.3%had superficial flat *** patients with epigastric pain,the combination of a mucosal protective agent(MPA)and proton pump inhibitor was more *** those with postprandial fullness,acid regurgitation,early satiety,or nausea,a MPA appeared more *** CEG is a multifactorial disease which is common in Asian patients and has non-specific *** may play a major role in its detection and *** should be individualized based on symptom profile.

关键词： Chronic erosive gastritis Symptom Endoscopic findings Treatment pattern Real-world

基于改进Preisach迟滞构架的工业机器人柔性关节深度神经网络迟滞建模研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

制造业自动化 2024年第9期46卷 7-14页

作者：党选举芮华桂林电子科技大学电子工程与自动化学院广西桂林541004

针对工业机器人柔性关节所具有非对称、速率相关及强非线性的复杂迟滞特性问题,改进Preisach模型,提出一种描述复杂迟滞特性的深度神经网络迟滞模型。从模型内部迟滞算子和外部网络结构两个角度改进Preisach模型,描述柔性关节的复杂迟... 详细信息

针对工业机器人柔性关节所具有非对称、速率相关及强非线性的复杂迟滞特性问题,改进Preisach模型,提出一种描述复杂迟滞特性的深度神经网络迟滞模型。从模型内部迟滞算子和外部网络结构两个角度改进Preisach模型,描述柔性关节的复杂迟滞特性:1)设计一个非对称非线性迟滞函数,替换Preisach模型内部迟滞算子,描述柔性关节的非对称迟滞特性;2)在Preisach模型输出端引入惯性滤波环节,在Preisach模型输入端引入输入输出历史信息,描述柔性关节的速率相关迟滞特性。将改进的Preisach模型与实现非线性映射的全连接神经网络串联构成深度神经网络迟滞模型。通过对比实验验证了所提出的深度神经网络迟滞模型描述工业机器人柔性关节复杂迟滞特性的有效性,其具有良好的预测能力和较高的精度。

关键词：工业机器人柔性关节复杂迟滞特性 Preisach模型深度神经网络迟滞模型