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Impact Analysis of Microscopic Defect Types on the Macroscopic Crack Propagation in Sintered Silver Nanoparticles 被引量:1
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作者 Zhongqing Zhang Bo Wan +4 位作者 Guicui Fu Yutai Su Zhaoxi Wu Xiangfen Wang Xu Long 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第4期441-458,共18页
Sintered silver nanoparticles(AgNPs)arewidely used in high-power electronics due to their exceptional properties.However,the material reliability is significantly affected by various microscopic defects.In this work,t... Sintered silver nanoparticles(AgNPs)arewidely used in high-power electronics due to their exceptional properties.However,the material reliability is significantly affected by various microscopic defects.In this work,the three primary micro-defect types at potential stress concentrations in sintered AgNPs are identified,categorized,and quantified.Molecular dynamics(MD)simulations are employed to observe the failure evolution of different microscopic defects.The dominant mechanisms responsible for this evolution are dislocation nucleation and dislocation motion.At the same time,this paper clarifies the quantitative relationship between the tensile strain amount and the failure mechanism transitions of the three defect types by defining key strain points.The impact of defect types on the failure process is also discussed.Furthermore,traction-separation curves extracted from microscopic defect evolutions serve as a bridge to connect the macro-scale model.The validity of the crack propagation model is confirmed through tensile tests.Finally,we thoroughly analyze how micro-defect types influence macro-crack propagation and attempt to find supporting evidence from the MD model.Our findings provide a multi-perspective reference for the reliability analysis of sintered AgNPs. 展开更多
关键词 Sintered silver nanoparticles defect types microscopic defect evolution macroscopic crack propagation molecular dynamics simulation cohesive zone model
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Flexible polydimethylsiloxane pressure sensor with micro-pyramid structures and embedded silver nanowires:A novel application in urinary flow measurement
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作者 Ben-Song Wang Ang Gao +4 位作者 Song-Wei Huang Qi-Hong Ning Cheng Zhou Qi-Xiang Song Da-XiangCui 《Nanotechnology and Precision Engineering》 EI CAS CSCD 2024年第3期1-12,共12页
Flexible pressure sensors are lightweight and highly sensitive,making them suitable for use in small portable devices to achieve precise measurements of tiny forces.This article introduces a low-cost and easy-fabricat... Flexible pressure sensors are lightweight and highly sensitive,making them suitable for use in small portable devices to achieve precise measurements of tiny forces.This article introduces a low-cost and easy-fabrication strategy for piezoresistive flexible pressure sensors.By embedding silver nanowires into a polydimethylsiloxane layer with micro-pyramids on its surface,a flexible pressure sensor is created that can detect low pressure (17.3 Pa) with fast response (<20 ms) and high sensitivity (69.6 mA kPa-1).Furthermore,the pressure sensor exhibits a sensitive and stable response to a small amount of water flowing on its surface.On this basis,the flexible pressure sensor is innovatively combined with a micro-rotor to fabricate a novel urinary flow-rate meter (uroflowmeter),and results from a simulated human urination experiment show that the uroflowmeter accurately captured all the essential shape characteristics that were present in the pump-simulated urination curves.Looking ahead,this research provides a new reference for using flexible pressure sensors in urinary flow-rate monitoring. 展开更多
关键词 Flexible pressure sensor silver nanowires Portable device Uroflowmeter Healthcare
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U-Pb dating of monazite in the Bainiuchang silver polymetallic deposit,Yunnan Province,and its limitation on Mesozoic mineralization
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作者 Bo-de Lu Wen-chang Li +10 位作者 Xue-long Liu Guang-zhi Meng Qi-he Long Hong Zhang Jun-shan Dao Fang-lan Li Jie-hu Zhou Mao-huang Fan Xue Mi Nan Shi Zhen-liang Cao 《China Geology》 CAS CSCD 2024年第3期592-595,共4页
1.Objective The Gejiu-Bozhushan-Laojunshan tin-tungsten polymetallic metallogenic belt is located in southeastern Yunnan.It is bounded by the Mile-Shizong Fault and the Yangzi Plate to the north and west,respectively,... 1.Objective The Gejiu-Bozhushan-Laojunshan tin-tungsten polymetallic metallogenic belt is located in southeastern Yunnan.It is bounded by the Mile-Shizong Fault and the Yangzi Plate to the north and west,respectively,while the Honghe Fault represents its southwestern boundary.It is adjacent to the Ailaoshan Fault,and extends to Guangxi and Vietnam to the southeast(Fig.1a;Liu JP et al.,2021). 展开更多
关键词 silver DATiNG SOUTHEAST
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Curative effect of hydrogen peroxide combined with silver ion disinfection on pelvic floor dysfunction
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作者 Wei Zhou Hua Guo 《World Journal of Clinical Cases》 SCIE 2024年第21期4508-4517,共10页
BACKGROUND Pelvic floor dysfunction(PFD)is related to muscle fiber tearing during childbirth,negatively impacting postpartum quality of life of parturient.Appropriate and effective intervention is necessary to promote... BACKGROUND Pelvic floor dysfunction(PFD)is related to muscle fiber tearing during childbirth,negatively impacting postpartum quality of life of parturient.Appropriate and effective intervention is necessary to promote PFD recovery.AIM To analyze the use of hydrogen peroxide and silver ion disinfection for vaginal electrodes in conjunction with comprehensive rehabilitation therapy for postpartum women with PFD.METHODS A total of 59 women with PFD who were admitted to the hospital from May 2019 to July 2022 were divided into two groups:Control group(n=27)received comprehensive rehabilitation therapy and observation group(n=32)received intervention with pelvic floor biostimulation feedback instrument in addition to comprehensive rehabilitation therapy.The vaginal electrodes were disinfected with hydrogen peroxide and silver ion before treatment.Intervention for both groups was started 6 weeks postpartum,and rehabilitation lasted for 3 months.Pelvic floor muscle voltage,pelvic floor muscle strength,vaginal muscle voltage,vaginal muscle tone,pelvic floor function,quality of life,and incidence of postpartum PFD were compared between the two groups.RESULTS Before comprehensive rehabilitation treatment,basic data and pelvic floor function were not significantly different between the two groups.After treatment,the observation group showed significant improvements in the maximum voltage and average voltage of pelvic floor muscles,contraction time of type I and type II fibers,pelvic floor muscle strength,vaginal muscle tone,vaginal muscle voltage,and quality of life(GQOLI-74 reports),compared with the control group.The observation group had lower scores on the pelvic floor distress inventory(PFDI-20)and a lower incidence of postpartum PFD,indicating the effectiveness of the pelvic floor biostimulation feedback instrument in promoting the recovery of maternal pelvic floor function.CONCLUSION The combination of the pelvic floor biostimulation feedback instrument and comprehensive rehabilitation nursing can improve pelvic floor muscle strength,promote the recovery of vaginal muscle tone,and improve pelvic floor function and quality of life.The use of hydrogen peroxide and silver ion disinfectant demonstrated favorable antibacterial efficacy and is worthy of clinical application. 展开更多
关键词 Pelvic floor biostimulation feedback instrument Comprehensive rehabilitation therapy Postpartum pelvic floor dysfunction Vaginal electrode Disinfection with hydrogen peroxide and silver ion Nanocolloidal silver
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The Influence of Tartaric Acid in the Silver Nanoparticle Synthesis Using Response Surface Methodology
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作者 Yatim Lailun Ni’mah Afaf Baktir +1 位作者 Dewi Santosaningsih Suprapto Suprapto 《Journal of Renewable Materials》 EI CAS 2024年第2期245-258,共14页
Silver nanoparticles(AgNPs)synthesized using tartaric acid as a capping agent have a great impact on the reaction kinetics and contribute significantly to the stability of AgNPs.The protective layer formed by tartaric... Silver nanoparticles(AgNPs)synthesized using tartaric acid as a capping agent have a great impact on the reaction kinetics and contribute significantly to the stability of AgNPs.The protective layer formed by tartaric acid is an important factor that protects the silver surface and reduces potential cytotoxicity problems.These attributes are critical for assessing the compatibility of AgNPs with biological systems and making them suitable for drug delivery applications.The aim of this research is to conduct a comprehensive study of the effect of tartaric acid concentration,sonication time and temperature on the formation of silver nanoparticles.Using Response Surface Methodology(RSM)with Face-Centered Central Composite Design(FCCD),the optimization process identifies the most favorable synthesis conditions.UV-Vis spectrum regression analysis shows that AgNPs stabilized with tartaric acid are more stable than AgNPs without tartaric acid.This highlights the increased stability that tartaric acid provides in AgNP ssssynthesis.Particle size distribution analysis showed a multimodal distribution for AgNPs with tartaric acid and showed the smallest size peak with an average size of 20.53 nm.The second peak with increasing intensity shows a dominant average size of 108.8 nm accompanied by one standard deviation of 4.225 nm and a zeta potential of−11.08 mV.In contrast,AgNPs synthesized with polyvinylpyrrolidone(PVP)showed a unimodal particle distribution with an average particle size of 81.62 nm and a zeta potential of−2.96 mV.The more negative zeta potential of AgNP-tartaric acid indicates its increased stability.Evaluation of antibacterial activity showed that AgNPs stabilized with tartaric acid showed better performance against E.coli and B.subtilis bacteria compared with AgNPs-PVP.In summary,this study highlights the potential of tartaric acid in AgNP synthesis and suggests an avenue for the development of stable AgNPs with versatile applications. 展开更多
关键词 Tartaric acid silver nanoparticle polyvinyl pyrrolidone response surface methodology
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Improving pressure ulcer care in intensive care units:Evaluating the impact of bundled care and silver nanoparticle dressings
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作者 Hong Yu 《World Journal of Clinical Cases》 SCIE 2024年第19期3873-3881,共9页
BACKGROUND Pressure ulcer(PU)are prevalent among critically ill trauma patients,posing substantial risks.Bundled care strategies and silver nanoparticle dressings offer potential solutions,yet their combined effective... BACKGROUND Pressure ulcer(PU)are prevalent among critically ill trauma patients,posing substantial risks.Bundled care strategies and silver nanoparticle dressings offer potential solutions,yet their combined effectiveness and impact on patient satisfaction remain insufficiently investigated.AIM To assess the impact of bundled care along with silver nanoparticle dressing on PUs management and family satisfaction in critically ill trauma patients.METHODS A total of 98 critically ill trauma patients with PUs in intensive care unit(ICU)were included in this study.Patients were randomly assigned to either the control group(conventional care with silver nanoparticle dressing,n=49)or the intervention group(bundled care with silver nanoparticle dressing,n=49).The PU Scale for Healing(PUSH)tool was used to monitor changes in status of pressure injuries over time.Assessments were conducted at various time points:Baseline(day 0)and subsequent assessments on day 3,day 6,day 9,and day 12.Family satisfaction was assessed using the Family Satisfaction ICU 24 ques-tionnaire.RESULTS No significant differences in baseline characteristics were observed between the two groups.In the intervention group,there were significant reductions in total PUSH scores over the assessment period.Specifically,surface area,exudate,and tissue type parameters all showed significant improvements compared to the control group.Family satisfaction with care and decision-making was notably higher in the intervention group.Overall family satisfaction was significantly better in the intervention group.CONCLUSION Bundled care in combination with silver nanoparticle dressings effectively alleviated PUs and enhances family satisfaction in critically ill trauma patients.This approach holds promise for improving PUs management in the ICU,benefiting both patients and their families. 展开更多
关键词 Pressure ulcers silver nanoparticle dressings Bundled care Pressure ulcer scale for healing tool Family satisfaction
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Green Synthesis of Silver Nanoparticles Using Aqueous Orange and Lemon Peel Extract and Evaluation of Their Antimicrobial Properties
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作者 Amra Bratovcic Amna Dautovic 《Advances in Nanoparticles》 CAS 2024年第2期11-28,共18页
Green synthesis of silver nanoparticles (AgNPs) using aqueous extracts of orange and lemon peels, as a reducing agent, and silver nitrate salts as a source of silver ions is a promising field of research due to the ve... Green synthesis of silver nanoparticles (AgNPs) using aqueous extracts of orange and lemon peels, as a reducing agent, and silver nitrate salts as a source of silver ions is a promising field of research due to the versatility of biomedical applications of metal nanoparticles. In this paper, AgNPs were synthetized at different reaction parameters such as the type and concentration of the extracts, metal salt concentration, temperature, speed stirring, and pH. The antibacterial properties of the obtained silver nanoparticles against E. coli, as well as the physical and chemical characteristics of the synthesized silver nanoparticles, were investigated. UV-Vis spectroscopy was used to confirm the formation of AgNPs. In addition to green biogenic synthesis, chemical synthesis of silver nanoparticles was also carried out. The optimal temperature for extraction was 65˚C, while for the synthesis of AgNPs was 35˚C. The synthesis is carried out in an acidic environment (pH = 4.7 orange and pH = 3.8 lemon), neutral (pH = 7) and alkaline (pH = 10), then for different concentrations of silver nitrate solution (0.5 mM - 1 mM), optimal time duration of the reaction was 60 min and optimal stirring speed rotation was 250 rpm on the magnetic stirrer. The physical properties of the synthesized silver nanoparticles (conductivity, density and refractive index) were also studied, and the passage of laser light through the obtained solution and distilled water was compared. Positive inhibitory effect on the growth of new Escherichia coli colonies have shown AgNPs synthesized at a basic pH value and at a 0.1 mM AgNO<sub>3</sub> using orange or lemon peel extract, while for a 0.5 mM AgNO<sub>3 </sub>using lemon peel extract. 展开更多
关键词 Green Synthesis silver Nanoparticles Orange and Lemon Peel Extract Antibacterial Activity Escherichia coli
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Diversified Elderly Care Services to Promote the Silver Economy
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作者 YANG SHUANGSHUANG 《China Today》 2024年第3期34-37,共4页
China is striving to build an elderly-friendly society,with comfortable living facilities,convenient transportation,and accessible leisure services.THE Chinese path to modernization entails the modernization of a huge... China is striving to build an elderly-friendly society,with comfortable living facilities,convenient transportation,and accessible leisure services.THE Chinese path to modernization entails the modernization of a huge population.Part of this,as was declared at the 20th National Congress of the Communist Party of China(CPC),means China will pursue a proactive national strategy in response to population aging,and develop elderly care programs and services.To actively respond to population aging,there is more to care than just the physical health of the elderly.Their needs are multi-level and diverse.To some extent,it’s fair to say that a society’s happiness is largely dependent on whether or not the elderly are happy.The silver economy,which meets the needs of the elderly for a better life,therefore has enormous development potentials. 展开更多
关键词 SERViCES silver ELDERLY
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The Silver Economy:New Opportunities for China’s Aging Population
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作者 YUAN XIN 《China Today》 2024年第3期24-27,共4页
Developing the silver economy is not only a requirement for enhancing services for the elderly,but also an important part of achieving China's high-quality development.CHINA’s latest Central Economic Work Confere... Developing the silver economy is not only a requirement for enhancing services for the elderly,but also an important part of achieving China's high-quality development.CHINA’s latest Central Economic Work Conference held in December 2023 emphasized the need to accelerate the improvement of a childbearing supportive policy system and develop the silver economy.As a result of the rapidly aging population in China,the silver economy has risen to an unprecedented height in China’s development strategy.From concept to action,the silver economy has become a significant part of China’s active response to such national issues as population aging,boosting domestic demands,and achieving high-quality development. 展开更多
关键词 POPULATiON silver silver
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Golden Opportunities in The Silver Economy
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作者 Zhang Lijuan 《China Report ASEAN》 2024年第4期40-43,共4页
The government work report delivered at the second session of the 14th National People’s Congress(NPC)in Beijing on March 5 stated that“a further push will be made to develop the silver economy.”Before this,on Janu... The government work report delivered at the second session of the 14th National People’s Congress(NPC)in Beijing on March 5 stated that“a further push will be made to develop the silver economy.”Before this,on January 15,the State Council issued Opinions on Developing the Silver Economy to Enhance the Well-being of the Elderly.The first in China dedicated to supporting the“silver economy,”the document outlines goals and measures for the development of the sector.So what can be done to seize the new opportunities emerging alongside the growing aging population to advance high-quality economic development? 展开更多
关键词 ECONOMY silver silver
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Biosynthesis of Silver Nanoparticles with Clerodendron phlomoides Leave Extract:Particle Morphology,Antimicrobial Potential and Application
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作者 Kirubanandan Shanmugam Subha Veeramani Renganathan Sahadevan 《Journal of Clinical and Nursing Research》 2024年第1期51-64,共14页
Silver nanoparticles are versatile nanomaterials that have found numerous applications in various fields.The use of plant extract for the synthesis of silver is a green and sustainable approach.Clerodendron phlomoides... Silver nanoparticles are versatile nanomaterials that have found numerous applications in various fields.The use of plant extract for the synthesis of silver is a green and sustainable approach.Clerodendron phlomoides leaves extract has been found to contain various phytochemicals,such as phenols,flavonoids,tannins,and alkaloids,which possess reducing and stabilizing properties that can aid the production of silver particles.In this paper,morphological and topographical analyses were performed on silver nanoparticles.The biosynthesized silver nanoparticles showed antimicrobial potential against wound pathogens.SEM and TEM micrographs revealed that the particles were sphere and nanosized,which makes them suitable for various biomedical applications. 展开更多
关键词 silver nanoparticles Clerodendron phlomoides BiOSYNTHESiS Morphology SEM TEM FTiR Antimicrobial activity and wound pathogens
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Antimicrobial Activity, Structural, Crystallographic and Thermal Characteristics of Alpha-Titanium Phosphate Promoted by Silver Ions
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作者 Enzo Erbisti Garcia Agnes Maria Cupertino Fernandes Araujo +6 位作者 Gerson Alberto Valencia Albitres Daniela de França da Silva Freitas Danielle Mattos Mariano Carlos Magno Fialho Soares Sibele Piedade Cestari Marco Antônio Lemos Miguel Luis Claudio Mendes 《Materials Sciences and Applications》 2024年第8期253-269,共17页
The recent global spread of the pandemic underscores the necessity of seeking new materials effective against microorganisms. Nanotechnology offers avenues for developing multifunctional materials. In this study, alph... The recent global spread of the pandemic underscores the necessity of seeking new materials effective against microorganisms. Nanotechnology offers avenues for developing multifunctional materials. In this study, alpha-titanium phosphate (α-TiP) nanoparticles were synthesized and treated with silver salt to enhance their antimicrobial properties. The physicochemical characteristics and antimicrobial activity were evaluated. It was revealed by X-ray diffraction analysis that the structural integrity of α-TiP was influenced by ethylenediamine and silver ions. Distinct degradation profiles for each chemical modification were shown by thermogravimetric analysis. Infrared spectroscopy detected shifts and new absorption peaks in the spectra depending on the type of modification. Energy dispersive spectroscopy confirmed the disaggregation of α-TiP galleries following the addition of silver salt, which increased their effectiveness against microorganisms. Notably, only the sample treated with silver ions exhibited antimicrobial action. Antimicrobial activity was tested against the bacteria of medical importance Escherichia coli, Salmonella Enteritidis, Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus cereus, Listeria momocytogenes and the yeast Candida albicans. All microorganisms were inhibited by sample containing silver. Minor inhibition was observed against the Gram-positive bacteria L. monocytogenes and Bacillus cereus, while the greatest inhibition occurred against the fungus (yeast) C. albicans. The results revealed a potential application of the nanoparticles for control of microorganisms in public health. 展开更多
关键词 Titanium Phosphate silver Nitrate Antimicrobial Action
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电感耦合等离子体发射光谱(ICP-OES)法测定含碘附银硅胶样品中碘含量
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作者 谢胜凯 王利 +7 位作者 夏晨光 李黎 冯亚鑫 张玉钏 刘刈 崔建勇 郭冬发 谭靖 《中国无机分析化学》 CAS 北大核心 2024年第10期1353-1358,共6页
附银硅胶可以吸附放射性碘,形成含碘的附银硅胶,是后处理厂中常用的碘废物吸附材料。含碘附银硅胶样品中碘含量的准确测定能够验证碘的吸附效率,为后处理过程提供数据支持。含碘附银硅胶样品中银离子和碘离子形成难溶的碘化银,在溶解过... 附银硅胶可以吸附放射性碘,形成含碘的附银硅胶,是后处理厂中常用的碘废物吸附材料。含碘附银硅胶样品中碘含量的准确测定能够验证碘的吸附效率,为后处理过程提供数据支持。含碘附银硅胶样品中银离子和碘离子形成难溶的碘化银,在溶解过程中难以将碘化银中碘离子定量转化为可溶解的碘离子、碘单质或者碘酸根,因此含碘附银硅胶样品中碘含量的测试方法比较困难。通过查阅银化合物的溶度积常数,考虑掩蔽银离子对碘离子的影响,在实验中采用加入硫离子的方法,生成比碘化银更难溶的硫化银沉淀,从而消除银离子的干扰。置换出的碘离子能够在碱性溶液中稳定存在,因碘含量较高,可采用电感耦合等离子体发射光谱法(ICP-OES)测定其含量。实验过程中考察了硫化钠加入量、氨水浓度、超声时间等对结果的影响。结果表明,硫化钠加入量与样品中银的含量有关,需要加入过量的硫离子沉淀银离子,不同的氨水浓度影响碘的灵敏度,而超声时间对结果基本无影响,优化实验条件后得到方法的检出限为0.52 mg/g,分别测量两个不同含量的含碘附银硅胶样品,平均值(n=6)为34.8 mg/g和59.3 mg/g,相对标准偏差为2.7%和2.0%,加标回收率为95.0%~103%。方法能够满足含碘附银硅胶样品中碘含量的测定。 展开更多
关键词 含碘附银硅胶 电感耦合等离子体发射光谱法 溶度积常数 碘化银
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Antibacterial Chitosan-Gelatin Microcapsules Modified with Green-Synthesized Silver Nanoparticles for Food Packaging 被引量:3
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作者 Long Li Yanan Lu +3 位作者 Yu Chen Jiayi Bian Li Wang Li Li 《Journal of Renewable Materials》 SCIE EI 2023年第1期291-307,共17页
Silver nanoparticles(Ag NPs)are an effective antibacterial agent,but their application in food packaging is limited due to their easy agglomeration and oxidation.In this study,antibacterial microcapsules were fabricat... Silver nanoparticles(Ag NPs)are an effective antibacterial agent,but their application in food packaging is limited due to their easy agglomeration and oxidation.In this study,antibacterial microcapsules were fabricated using Ginkgo biloba essential oil(GBEO)as core material and chitosan and type B gelatin biopolymer as capsule mate-rials.These antibacterial microcapsules were then modified with green-synthesized Ag NPs,blended into the bio-polymer polylactic acid(PLA),and finally formed as films.Physicochemical properties and antibacterial activity against Escherichia coli(E.coli)and Staphylococcus aureus(S.aureus)were evaluated.Results showed that the prepared antibacterial PLA films exhibited excellent antibacterial activity against foodborne pathogens.Its TVC exceeded the limit value of 7 log CFU/g at 7 days compared with the 5 days of pure PLA films.Therefore,these films can extend the shelf life of grass carp fillets by 2–3 days under refrigeration. 展开更多
关键词 silver nanoparticles chitosan GELATiN MiCROCAPSULES antibacterial activity food packaging
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Bifunctional flexible electrochromic energy storage devices based on silver nanowire flexible transparent electrodes 被引量:2
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作者 He Zhang Fangyuan Sun +8 位作者 Ge Cao Dongyan Zhou Guofan Zhang Jiayun Feng Shang Wang Fengyu Su Yanqing Tian Yan Jun Liu Yanhong Tian 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2023年第1期307-316,共10页
Flexible electrochromic energy storage devices(FECESDs)for powering flexible electronics have attracted considerable attention.Silver nanowires(AgNWs)are one kind of the most promising flexible transparent electrodes(... Flexible electrochromic energy storage devices(FECESDs)for powering flexible electronics have attracted considerable attention.Silver nanowires(AgNWs)are one kind of the most promising flexible transparent electrodes(FTEs)materials for the emerging flexible devices.Currently,fabricating FECESD based on AgNWs FTEs is still hindered by their intrinsic poor electrochemical stability.To address this issue,a hybrid AgNWs/Co(OH)_(2)/PEDOT:PSS electrode is proposed.The PEDOT:PSS could not only improve the resistance against electrochemical corrosion of AgNWs,but also work as functional layer to realize the color-changing and energy storage properties.Moreover,the Co(OH)_(2)interlayer further improved the color-changing and energy storage performance.Based on the improvement,we assembled the symmetrical FECESDs.Under the same condition,the areal capacitance(0.8 mF cm^(−2))and coloration efficiency(269.80 cm^(2)C−1)of AgNWs/Co(OH)_(2)/PEDOT:PSS FECESDs were obviously higher than AgNWs/PEDOT:PSS FECESDs.Furthermore,the obtained FECESDs exhibited excellent stability against the mechanical deformation.The areal capacitance remained stable during 1000 times cyclic bending with a 25 mm curvature radius.These results demonstrated the broad application potential of the AgNWs/Co(OH)_(2)/PEDOT:PSS FECESD for the emerging portable and multifunctional electronics. 展开更多
关键词 electrochromic device energy storage device silver nanowires flexible transparent electrode
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载银纳米TiO_(2)改性对橡胶木防霉性能的影响研究
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作者 张倩 吕蕾 +2 位作者 周亚菲 时兰翠 张晔 《化工新型材料》 CAS CSCD 北大核心 2024年第S02期237-241,247,共6页
通过抑菌圈法探究不同浓度梯度载银纳米二氧化钛抑菌防霉剂对桔青霉、黑曲霉、白腐菌、密粘褶菌的抑菌效果,优化最佳抑菌浓度,然后选用该浓度改性剂对橡胶木进行常压浸渍处理,探究改性剂对橡胶木的防霉改性效果,并进行防霉改性机理分析... 通过抑菌圈法探究不同浓度梯度载银纳米二氧化钛抑菌防霉剂对桔青霉、黑曲霉、白腐菌、密粘褶菌的抑菌效果,优化最佳抑菌浓度,然后选用该浓度改性剂对橡胶木进行常压浸渍处理,探究改性剂对橡胶木的防霉改性效果,并进行防霉改性机理分析。结果表明:载银纳米二氧化钛对黑曲霉、白腐菌、密粘褶菌有明显抑菌效果,对桔青霉的抑菌效果较差。随着载银纳米二氧化钛浓度的增加,白腐菌、密粘褶菌、桔青霉的抑菌圈直径呈增大趋势,黑曲霉的抑菌圈直径呈先增加后呈略微降低趋势,并优化得出最佳的抑菌浓度为10mg/mL,此时白腐菌、密粘褶菌、桔青霉、黑曲霉的抑菌圈平均直径分别为26.60mm、27.00mm、19.56mm、26.55mm;橡胶木经10mg/mL载银纳米二氧化钛改性剂浸渍处理后对黑曲霉、白腐菌、密粘褶菌的防治效力达到100%,对桔青霉的防治效力可达到85%以上,实现优异的防霉改性效果。 展开更多
关键词 载银纳米二氧化钛 橡胶木改性 浸渍处理 防霉性能
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基于iTRAQ蛋白组学技术挖掘水貂生长调控关键蛋白
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作者 荣敏 吕延飞 +1 位作者 崔立娇 张然然 《黑龙江畜牧兽医》 CAS 北大核心 2024年第15期109-115,121,共8页
为了分析水貂在不同日龄胸肌组织蛋白质表达模式,探究水貂生长发育调控机制,试验选取相同条件下饲养的健康雄性银蓝水貂9只,分别在45日龄、90日龄、120日龄时各宰杀3只取胸肌组织,利用iTRAQ定量蛋白组学技术构建银蓝水貂蛋白质表达图谱... 为了分析水貂在不同日龄胸肌组织蛋白质表达模式,探究水貂生长发育调控机制,试验选取相同条件下饲养的健康雄性银蓝水貂9只,分别在45日龄、90日龄、120日龄时各宰杀3只取胸肌组织,利用iTRAQ定量蛋白组学技术构建银蓝水貂蛋白质表达图谱,筛选显著差异表达蛋白,并进行GO功能注释、KEGG信号通路富集、时间趋势聚类分析。结果表明:在银蓝水貂胸肌组织中共鉴定到2922种蛋白质,其中189种在水貂生长过程中发生了显著差异表达(差异倍数≥1.2或≤0.83,P<0.05),有25种差异表达蛋白与肌肉发育相关。差异表达蛋白主要参与了核糖体生物合成、蛋白靶向内质网、翻译、肌动蛋白介导的细胞收缩、肌丝滑动、ATP酶活性调控等生物学过程;富集到了核糖体、翻译、氧化磷酸化、能量代谢、心肌收缩等信号通路中。差异表达蛋白在Profile 2与Profile 5两种表达模式显著富集,Profile 2模式中的差异表达蛋白在90日龄表达量显著下降,主要参与了翻译、蛋白质代谢过程、核糖体生物合成;Profile 5模式中的差异表达蛋白在90日龄表达量最高,主要参与了骨骼肌系统、肌细胞发育、氧化磷酸化。说明这些差异表达蛋白可以作为水貂生长发育相关的候选蛋白,用于水貂生长发育分子调控机制的阐明及大型优质水貂品种的培育。 展开更多
关键词 银蓝水貂 蛋白组学 肌肉 生长发育 品种培育
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Simple synthesis of silver nanocluster composites AgNCs@PE-g-PAA by irradiation method and fluorescence detection of Cr^(3+) 被引量:1
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作者 Fei Han Wen-Rui Wang +3 位作者 Dan-Yi Li Mou-Hua Wang Ji-Hao Li Lin-Fan Li 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2023年第5期101-111,共11页
Silver nanoclusters(AgNCs)are a new type of nanomaterials with similar properties to molecules and unique applications.The applications of AgNCs can be significantly expanded by combining them with different matrix ma... Silver nanoclusters(AgNCs)are a new type of nanomaterials with similar properties to molecules and unique applications.The applications of AgNCs can be significantly expanded by combining them with different matrix materials to obtain AgNC composites.Using irradiation techniques,we developed a simple two-step method for preparing silver nanocluster composites.First,polyacrylic acid(PAA)chains were grafted onto the surface of a PE film as templates(PE-g-PAA).Subsequently,silver ions were reduced in situ on the surface of the template material to obtain the AgNC composites(AgNCs@PE-g-PAA).The degree of AgNC loading on the composite film was easily controlled by adjusting the reaction conditions.The loaded AgNCs were anchored to the carboxyl groups of the PAA and wrapped in the graft chain.The particle size of the AgNCs was only 4.38±0.85 nm,with a very uniform particle size distribution.The AgNCs@PE-g-PAA exhibited fluorescence characteristics derived from the AgNCs.The fluorescence of the AgNCs@PE-g-PAA was easily quenched by Cr^(3+)ions.The composite can be used as a fluorescence test paper to realize visual detection of Cr^(3+). 展开更多
关键词 silver nanoclusters irradiation grafting irradiation reduction in situ preparation Fluorescence detection
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Effect of Introducing Conductive Organic Carrier on Properties of Low-Temperature Conductive Silver Paste 被引量:1
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作者 Peng Chen Wentao Shi +1 位作者 Jian Wan Lu Huang 《Journal of Renewable Materials》 SCIE EI 2023年第2期1017-1029,共13页
The poly(epoxy-N-methylaniline)conductive organic carrier was used as the bonding phase of the low-temperature conductive silver paste.Then,this was mixed with different proportions of silver powder to prepare the low... The poly(epoxy-N-methylaniline)conductive organic carrier was used as the bonding phase of the low-temperature conductive silver paste.Then,this was mixed with different proportions of silver powder to prepare the low-temperature conductive silver paste.Afterwards,the effect of the conductive organic carrier on the properties of the low-temperature conductive silver paste was determined by IR,DMA and SEM.The results revealed that the prepared conductive paste has good conductivity,film-forming performance,printing performance,low-temperature curing performance,and anti-aging performance.When the mass percentage of the bonding phase/conductive phase was 40/60,the lowest volume resistivity of the conductive silver paste was 4.9×10^(−6)Ω⋅cm,and the conductivity was the best. 展开更多
关键词 Low temperature conductive silver paste poly(epoxy-N-methylaniline) volume resistivity conductivity
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Silver Bridge坍塌事件--焊接疲劳缺陷惹的祸
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作者 易竺霖 马江南 高灵清 《金属世界》 CAS 2023年第5期14-20,共7页
生活中人们经常和“疲劳”打交道,小到铁丝断裂、自行车链条损坏;大到飞机失事、桥梁倒塌、船舶沉没,都是“疲劳”在作祟。而焊接结构由于焊接缺陷的存在,更易发生疲劳失效。由钢结构搭建而成的Silver Bridge就曾因为疲劳失效而坍塌,给... 生活中人们经常和“疲劳”打交道,小到铁丝断裂、自行车链条损坏;大到飞机失事、桥梁倒塌、船舶沉没,都是“疲劳”在作祟。而焊接结构由于焊接缺陷的存在,更易发生疲劳失效。由钢结构搭建而成的Silver Bridge就曾因为疲劳失效而坍塌,给人们带来血与泪的教训。因此,掌握焊接结构疲劳寿命的计算和延长寿命的方法,才能够让焊接结构更安全、更可靠地为社会发展做贡献。 展开更多
关键词 结构疲劳寿命 疲劳失效 焊接结构 桥梁倒塌 飞机失事 silver 焊接缺陷 延长寿命
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