检索结果-南通市图书馆

Unveiling size-fluorescence correlation of organic nanoparticles and its use in nanoparticle size determination

在线全文

学校读者我要写书评

暂无评论

Aggregate

Aggregate 2024年第1期5卷 331-336页

作者： Wu-Jie guo shixiang Ma Hui Wang Lu Qiao Lei Chen Chenyu Hong Bin Liu Xiaoyan Zheng Hui-Qing Peng State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijingChina Key Laboratory of Cluster Science of Ministry of Education Beijing Key Laboratory of Photoelectronic/Electro-photonic Conversion MaterialsKey Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering of Ministry of Industry and Information TechnologySchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijingChina

Quantitatively establishing the correlation between nanoparticle size and fluorescence is essential for understanding the behavior and functionality of fluorescent nanoparticles(FNPs).However,such exploration focusing on organic FNPs has not been achieved to ***,we employ the use of supramolecular polymeric FNPs prepared from tetraphenylethylene-based bis-ureidopyrimidinone monomers(bis-UPys)to relate the size to the fluorescence of organic *** an equal concentration of bis-UPys,a logarithmic relationship between them is built with a correlation coefficient higher than *** calculations indicate that variations in fluorescence intensity among FNPs of different sizes are attributed to the distinct molecular packing environments at the surface and within the interior of the *** leads to different nonradiative decay rates of the embedded and exposed bis-UPys and thereby changes the overall fluorescence quantum yield of nanoparticles due to their different specific surface *** established fluorescence intensity-size correlation possesses fine universality and reliability,and it is successfully utilized to estimate the sizes of other nanoparticles,including those in highly diluted dispersions of *** work paves a new way for the simple and real-time determination of nanoparticle sizes and offers an attractive paradigm to optimize nanoparticle functionalities by the size effect.

关键词： aggregation-induced emission fluorescence detection fluorescent nanoparticle nanoparticle size supramolecular polymer

Highly Efficient Aligned Ion‑Conducting Network and Interface Chemistries for Depolarized All‑Solid‑State Lithium Metal Batteries

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

Nano-Micro Letters 2024年第5期16卷 102-119页

作者： Yongbiao Mu shixiang Yu Yuzhu Chen Youqi Chu Buke Wu Qing Zhang Binbin guo Lingfeng Zou Ruijie Zhang Fenghua Yu Meisheng Han Meng Lin Jinglei Yang Jiaming Bai Lin Zeng Shenzhen Key Laboratory of Advanced Energy Storage Southern University of Science and TechnologyShenzhen 518055People’s Republic of China Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055People’s Republic of China SUSTech Energy Institute for Carbon Neutrality Southern University of Science and TechnologyShenzhen 518055People’s Republic of China Department of Mechanical and Aerospace Engineering Hong Kong University of Science and TechnologyKowloon 997077Hong Kong Special Administrative Region of ChinaPeople’s Republic of China HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute FutianShenzhenPeople’s Republic of China

Improving the long-term cycling stability and energy density of all-solid-state lithium(Li)-metal batteries(ASSLMBs)at room temperature is a severe challenge because of the notorious solid–solid interfacial contact loss and sluggish ion *** electrolytes are generally studied as two-dimensional(2D)structures with planar interfaces,showing limited interfacial contact and further resulting in unstable Li/electrolyte and cathode/electrolyte ***,three-dimensional(3D)architecturally designed composite solid electrolytes are developed with independently controlled structural factors using 3D printing processing and post-curing ***-type electrolyte films with vertical-aligned micro-pillar(p-3DSE)and spiral(s-3DSE)structures are rationally designed and developed,which can be employed for both Li metal anode and cathode in terms of accelerating the Li+transport within electrodes and reinforcing the interfacial *** printed p-3DSE delivers robust long-term cycle life of up to 2600 cycles and a high critical current density of 1.92 mA cm^(−2).The optimized electrolyte structure could lead to ASSLMBs with a superior full-cell areal capacity of 2.75 mAh cm^(−2)(LFP)and 3.92 mAh cm^(−2)(NCM811).This unique design provides enhancements for both anode and cathode electrodes,thereby alleviating interfacial degradation induced by dendrite growth and contact *** approach in this study opens a new design strategy for advanced composite solid polymer electrolytes in ASSLMBs operating under high rates/capacities and room temperature.

关键词： All-solid-state lithium metal batteries Composite solid electrolyte 3D printing Areal capacity Interfacial degradation

Antagonistic MADS-box transcription factors SEEDSTICK and SEPALLATA3 form a transcriptional regulatory network that regulates seed oil accumulation

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2024年第1期66卷 121-142页

作者： Shuangcheng He Yuanchang Min Zijin Liu Fang Zhi Rong Ma Ankang Ge shixiang Wang Yu Zhao Danshuai Peng Da Zhang Minshan Jin Bo Song Jianjun Wang Yuan guo Mingxun Chen State Key Laboratory for Crop Stress Resistance and High‐Efficiency Production National Yangling Agricultural Biotechnology&Breeding CenterShaanxi Key Laboratory of Crop HeterosisCollege of AgronomyNorthwest A&F UniversityYangling 712100China State Key Laboratory for Crop Stress Resistance and High‐Efficiency Production Shaanxi Key Laboratory of AppleCollege of HorticultureNorthwest A&F UniversityYangling 712100China

Transcriptional regulation is essential for balancing multiple metabolic pathways that influence oil accumulation in *** far,the transcriptional regulatory mechanisms that govern seed oil accumulation remain largely ***,we identified the transcriptional regulatory network composed of MADS-box transcription factors SEEDSTICK(STK)and SEPALLATA3(SEP3),which bridges several key genes to regulate oil accumulation in *** found that STK,highly expressed in the developing embryo,positively regulates seed oil accumulation in Arabidopsis(Arabidopsis thaliana).Furthermore,we discovered that SEP3 physically interacts with STK in vivo and in *** oil content is increased by the SEP3 mutation,while it is decreased by SEP3 *** chromatin immunoprecipitation,electrophoretic mobility shift assay,and transient dual-luciferase reporter assays showed that STK positively regulates seed oil accumulation by directly repressing the expression of MYB5,SEP3,and SEED FATTY ACID REDUCER 4(SFAR4).Moreover,genetic and molecular analyses demonstrated that STK and SEP3 antagonistically regulate seed oil production and that SEP3 weakens the binding ability of STK to MYB5,SEP3,and ***,we demonstrated that TRANSPARENT TESTA 8(TT8)and ACYL-ACYL CARRIER PROTEIN DESATURASE 3(AAD3)are direct targets of MYB5 during seed oil accumulation in ***,our findings provide the transcriptional regulatory network antagonistically orchestrated by STK and SEP3,which fine tunes oil accumulation in seeds.

关键词： seed oil accumulation SEP3 STK transcription factor transcriptional regulation

An Exploration on Motivation of Non- English Majors in Polytechnics Taking Students Majoring in Tourism for Example

在线全文

学校读者我要写书评

暂无评论

大学英语教学与研究 2011年第2期50卷 56-60页

作者： guo shixiang Dept. of Foreign Languages Jiangmen Polytechnic Jiangmen Guangdong 529000

交界可切除和局部进展期胰腺癌行新辅助化疗的疗效分析

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

中国普通外科杂志 2023年第3期32卷 336-345页

作者：商阳阳陶俊宇杨佳丽郭诗翔重庆市人民医院肝胆胰腺外科重庆401147 中国科学院大学重庆学院重庆400714

背景与目的:胰腺癌是一种高致死率的消化道恶性肿瘤,仅有大约20%患者可接受根治性手术切除,5年存活率不到6%。目前,胰腺癌的治疗策略已从传统以手术切除为主逐步过渡到以手术切除为基础的综合多维治疗模式。术前新辅助化疗已成为交界可... 详细信息

背景与目的:胰腺癌是一种高致死率的消化道恶性肿瘤,仅有大约20%患者可接受根治性手术切除,5年存活率不到6%。目前,胰腺癌的治疗策略已从传统以手术切除为主逐步过渡到以手术切除为基础的综合多维治疗模式。术前新辅助化疗已成为交界可切除胰腺癌(BRPC)和局部进展期胰腺癌(LAPC)的首选和标准治疗方案。术前新辅助化疗是胰腺癌患者综合多维治疗体系中重要的组成部分,本研究旨在探讨胰腺癌新辅助化疗的临床应用价值。方法:回顾性分析2020年4月—2021年8月期间重庆市人民医院肝胆胰腺外科收治的54例胰腺癌患者的临床资料。所有病例均通过临床影像学评估和相关生化指标判定为BRPC或LAPC;行CT或超声内镜引导下穿刺活检,病理组织学确诊均为胰腺导管腺癌,经多学科诊疗模式决策给予3个周期的AG(吉西他滨+白蛋白结合型紫杉醇)新辅助化疗方案。化疗期间动态监测影像学、CA19-9、临床症状体征等变化情况,行改良实体瘤疗效评价标准(m RECIST)系统性疗效评估手术可切除性。结果:54例患者新辅助化疗后的中位生存期为12.3个月;43例(79.63%)新辅助化疗后CA19-9下降,其中35例(64.81%)降低幅度>50%,13例(24.07%)降至正常范围内;42例合并腹部和(或)腰背部疼痛的患者中,29例(69.04%)新辅助化疗后疼痛明显缓解(NRS疼痛评分≤4分);13例(24.07%)经mRECIST评估为原发病灶直径较新辅助化疗前缩小>30%且无重要血管侵犯,影像学评估为可切除胰腺癌后均行R0切除。术后所有患者血清CA19-9水平控制良好,术后病理提示神经侵犯7例(53.84%)、脉管侵犯4例(30.77%),淋巴结转移病理检查确定为N09例(69.23%)、N14例(30.77%)、N20例。术后相关并发症发生率为B级胰瘘2例(15.38%),胃排空障碍1例(7.69%),肺部感染3例(23.07%),腹腔感染2例(15.38%),无腹腔内出血及胆瘘发生。术后90 d病死率为0。随访手术患者均健在且术后生活质量佳。结论:对于BRPC或LAPC患者,新辅助化疗有助于提高手术R0切除率,降低淋巴结阳性率,延缓肿瘤进展,有效缓解腹部和(或)腰背部疼痛,提高患者生活质量,延长总生存期,改善预后。

关键词：胰腺肿瘤肿瘤辅助疗法肿瘤治疗方案预后

富勒烯对过氧化氢氧化路径中硫酸盐形成的影响

在线全文

学校读者我要写书评

暂无评论

离子交换与吸附 2023年第6期39卷 512-521页

作者：杜亚宁郭仕祥郭照冰南京信息工程大学环境科学与工程学院江苏省大气环境监测与污染控制重点实验室大气环境与装备技术协同创新中心

富勒烯(C60)作为一种大气中存在的新型污染物，在雾霾天气中对硫酸盐的形成具有潜在的影响。过氧化氢(H2O2)作为硫酸盐气溶胶最主要的氧化剂，对硫酸盐形成的贡献至关重要。本文深入研究了C60在H2O2氧化反应路径中对硫酸盐形成的作用及... 详细信息

富勒烯(C60)作为一种大气中存在的新型污染物，在雾霾天气中对硫酸盐的形成具有潜在的影响。过氧化氢(H2O2)作为硫酸盐气溶胶最主要的氧化剂，对硫酸盐形成的贡献至关重要。本文深入研究了C60在H2O2氧化反应路径中对硫酸盐形成的作用及其影响机理。通过进行实验室模拟实验，研究了C60颗粒和稳定聚集体nC60在H2O2液相氧化途径下对硫酸盐生成的贡献，结果表明，在C60颗粒存在时，硫酸盐产量有明显增加，稳定聚集体n C60对硫酸盐的贡献微乎其微。通过FT-IR和XPS表征进一步分析其影响机制，整个反应过程是一个先吸附后氧化的过程，期间C60表面通过电子转移降低了反应能垒，使表面的S(Ⅳ)更容易演变成S(Ⅵ)。经由自由基定量检测实验发现，C60能够有效促进H2O2分解生成羟基自由基(·OH)和超氧自由基(·O2-)，两种活性基团的存在会改变反应体系的氧化能力并进一步促进SO2的氧化。本研究证实了C60对大气硫酸盐生成具有重要贡献，这可能是加剧雾霾污染的潜在因素。

关键词：富勒烯硫酸盐过氧化氢氧化

基于微型移动学习的AAWP模式英语写作教学研究

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

外国语文 2015年第6期31卷 145-150页

作者：郭士香江门职业技术学院外语系广东江门529090

本文对基于微型移动学习的AAWP模式英语写作课程的教学改革和教学实践开展实证研究。全文依据教学设计理论,结合微型移动学习特点,从微型移动学习设计、微型移动学习资源设计与开发两个方面探索了高职高专院校的英语写作课程的教学改革... 详细信息

本文对基于微型移动学习的AAWP模式英语写作课程的教学改革和教学实践开展实证研究。全文依据教学设计理论,结合微型移动学习特点,从微型移动学习设计、微型移动学习资源设计与开发两个方面探索了高职高专院校的英语写作课程的教学改革与创新。文章认为:基于微型移动学习的英语写作课程模式对语言类课程的教学改革具有借鉴意义,因为移动学习界面设计简洁,任务负载量适中,评价考核多样化,监控体系立体化,保障了学习任务完成的高效性。研究结果表明,微型移动学习AAWP模式不仅调动了学生们的学习兴趣,而且提高了学生们的英语写作水平。

关键词：微型移动学习 AAWP模式英语写作教学研究

在线全文

学校读者我要写书评

暂无评论

基于多目标层次覆盖的消防救援站布防技术

消防科学与技术 2024年第8期43卷 1174-1180页

作者：晏明海王伟郭凯田世祥贵州大学矿业学院贵州贵阳550025 应急管理部上海消防研究所上海200032

为探析城市火灾空间分布,提出科学高效的城市消防站布局,以上海市浦东新区为研究对象,基于兴趣点(POI)、城市路网、消防站等数据,运用SAVEE法和德尔菲法识别城市火灾风险,利用“位置-分配”模型和“服务区”模型从多个角度开展多目标消... 详细信息

为探析城市火灾空间分布,提出科学高效的城市消防站布局,以上海市浦东新区为研究对象,基于兴趣点(POI)、城市路网、消防站等数据,运用SAVEE法和德尔菲法识别城市火灾风险,利用“位置-分配”模型和“服务区”模型从多个角度开展多目标消防协同布防研究。结果表明:火灾高风险区主要集中在浦东新区的花木街道、金桥经济技术开发区、惠南镇等区域;浦东新区现行消防站整体覆盖率为59.94%,主要责任辖区覆盖率为95.2%,其他等级的覆盖情况均低于消防覆盖标准;在现有消防站的基础上,需新增8座消防救援站,以进一步优化浦东新区消防布局。

关键词：消防救援站多目标兴趣点数据 “服务区”模型 “位置-分配”模型

平衡源网侧利益的大型风光蓄多能互补基地容量优化配置

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

电网与清洁能源 2023年第12期39卷 61-71页

作者：王俊钗卢有麟程发顺张丹庆郭士祥中国电建集团中南勘测设计研究院有限公司湖南长沙410014

综合考虑大型清洁能源多能互补基地自身的经济性和电网负荷形态、远距离输电通道需求,研究大型风光蓄多能互补基地容量优化配置。引入风光等新能源弃风光率、远距离输电通道利用率、远距离输电通道最小送电需求、电网负荷形态需求等约束... 详细信息

综合考虑大型清洁能源多能互补基地自身的经济性和电网负荷形态、远距离输电通道需求,研究大型风光蓄多能互补基地容量优化配置。引入风光等新能源弃风光率、远距离输电通道利用率、远距离输电通道最小送电需求、电网负荷形态需求等约束,以多能互补基地经济性为目标,并以西藏某市风光蓄多能互补基地为研究对象开展基地容量优化配置研究。研究结果表明,优化的方案具有良好的基地自身经济性和电网侧负荷需求一致性表现。

关键词：风光蓄多能互补基地容量配置负荷需求经济比较