检索结果-南通市图书馆

Chinese Physics B 2022年第8期31卷 645-650页

作者： Zeng-Ping Su tong-tong wei Yue-Ke Wang Optical Information Science and Technology Department Jiangnan UniversityWuxi 214122China Optoelectronic Engineering and Technology Research Center Jiangnan UniversityWuxi 214122China

The dual-channel nearly perfect absorption is realized by the coupled modes of topological interface states(TIS) in the near-infrared range. An all-dielectric layered heterostructure composed of photonic crystals(Ph C)/graphene/Ph C/graphene/Ph C on Ga As substrate is proposed to excite the TIS at the interface of adjacent Ph C with opposite topological properties. Based on finite element method(FEM) and transfer matrix method(TMM), the dualchannel absorption can be modulated by the periodic number of middle Ph C, Fermi level of graphene, and angle of incident light(TE and TM polarizations). Especially, by fine-tuning the Fermi level of graphene around 0.4 e V, the absorption of both channels can be switched rapidly and synchronously. This design is hopefully integrated into silicon-based chips to control light.

关键词： one-dimensional photonic crystals graphene topological interface states

基于PSO-GA的Kriging插值法建立透地通信分层地层媒质模型

在线全文

学校读者我要写书评

暂无评论

煤炭学报 2016年第11期41卷 2913-2920页

作者：唐彤彤杨维邵小桃北京交通大学电子信息工程学院北京100044

地层层系的不同分布对透地通信电磁波的传播特性有重要影响。Kriging插值法利用地层媒质的有限采样点可有效建立分层地层媒质模型,其中的插值计算过程中变异函数模型参数的优化是准确构造地层分层模型的关键。为更好地解决由于采样点分... 详细信息

地层层系的不同分布对透地通信电磁波的传播特性有重要影响。Kriging插值法利用地层媒质的有限采样点可有效建立分层地层媒质模型,其中的插值计算过程中变异函数模型参数的优化是准确构造地层分层模型的关键。为更好地解决由于采样点分布不匀造成的插值点与采样点之间的误差,使求出的构建地层分界面的插值点更加逼近采样点,从而更精确地建立地层分层模型,提出了一种基于粒子群-遗传(PSO-GA)的Kriging插值法,对变异函数模型的参数进行优化。相比于基于PSO的Kriging插值法与基于GA的Kriging插值法,所提出的算法在粒子寻优迭代整个过程中通过粒子间的两次信息交换,不仅解决了陷入局部最优的问题,实现了全局最优样本,还加快了收敛的速度。仿真与分析结果表明采用所提出的基于PSO-GA的Kriging插值法建立透地通信分层地层媒质模型,相比于基于PSO的Kriging插值法与基于GA的Kriging插值法可获得更好的寻优性能及寻优稳定性。

关键词： Kriging插值法粒子群优化-遗传算法地层模型透地通信

Chicken type Ⅱ collagen induced immune balance of Th1/Th2 and Treg/Th17 in mesenteric lymph node lymphocytes in rats with collagen-induced arthritis

在线全文

学校读者我要写书评

暂无评论

Chicken type Ⅱ collagen induced immune balance of Th1/Th2 a...

Effects of ultrasonic-assisted extraction on bioactive compounds,volatile flavors and antioxidant activities of vine tea water extracts

中国药理学会第十次全国学术会议

作者： tong tong,wei Zhao,Ying-qi Wu,Qing-tong Wang,Yan Chang,Ling-Ling Zhang,wei wei (Institute of Clinical Pharmacology,Anhui Medical University,The Key Laboratory of Antiinflammatory and Immunopharmacology,Ministry of Education,P.R.China,Hefei,230032)

Objective:To investigate the effect of the oral administration of chicken typeⅡcollagen(CCII) on balance of Thl/Th2 and Treg/Thl7 in mesenteric lymph node lymphocytes(MLNs) in rats with collagen-induced arthritis(CIA).Methods:CIA was induced in SD rats immunized with chicken typeⅡcollagen(CCII) in Freund’s complete ***(10,20 and 40μg/kg/d,ig×7 days) was oral administration to rats from day 14 to 21 after *** was evaluated by hind paw swelling,polyarthritis index,MLNs and synovium were harvested for histological ***-2,IL-4,IL-17 and TGF-βlevel were *** proportion of CD4+CD25+Treg and Thl7 were labeled by double-colour for flow cytometry ***:CCII(10,20, 40μg/kg,ig×7 days) suppressed secondary inflammatory reactions and histological changes in CIA ***-2 and IL-17 level of CIA rats were significantly inhibited by ***-4,TGF-βlevel were increased in CCII groups. CCII significantly increased the proportion of Treg and decreased the proportion of ***:CCII had therapeutic effects on CIA rats,which was related to decrease over-production of pro-inflammatory mediator and increase hypo-production of anti-inflammatory *** suggests that CCII play an important role in regulating immune balance of Thl/Th2 and Thl7/Treg in rats with CIA.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Traditional Medicine Research 2025年第1期10卷 73-81页

作者： Xiao-Long Zhou wei-Jin Jiang Ji Yu Mao-Jun Yao Yun-tong Li Hunan Provincial Key Laboratory of Research Resource Mining and High-valued Utilization on Edible&Medicinal PlantCollege of Chemistry and Chemical EngineeringJishou UniversityJishou 416000China Hunan Gaoge Dairy Co. Ltd.Changsha 410000China

Background:Ampelopsis grossedentata,vine tea,which is the tea alternative beverages in *** vine tea processing,a large amount of broken tea is produced,which has low commercial ***:This study investigates the influence of different extraction methods(room temperature water extraction,boiling water extraction,ultrasonic-assisted room temperature water extraction,and ultrasonic-assisted boiling water extraction,referred to as room temperature water extraction(RE),boiling water extraction(BE),ultrasonic assistance at room temperature water extraction(URE),and ultrasonic assistance in boiling water extraction(UBE))on the yield,dihydromyricetin(DMY)content,free amino acid composition,volatile aroma components,and antioxidant properties of vine tea ***:A notable influence of extraction temperature on the yield of vine tea extracts(P<0.05),with BE yielding the highest at 43.13±0.26%,higher than that of RE(34.29±0.81%).Ultrasound-assisted extraction significantly increased the DMY content of the extracts(P<0.05),whereas DMY content in the RE extracts was 59.94±1.70%,that of URE reached 66.14±2.78%.Analysis revealed 17 amino acids,with L-serine and aspartic acid being the most abundant in the extracts,nevertheless ultrasound-assisted extraction reduced total free amino acid *** chromatography-mass spectrometry analysis demonstrated an increase in the diversity and quantity of compounds in the vine tea water extracts obtained through ultrasonic-assisted ***,69 and 68 volatile compounds were found in URE and UBE extracts,which were higher than the number found in RE and BE *** vitro,antioxidant activity assessments revealed varying antioxidant capacities among different extraction methods,with RE exhibiting the highest DPPH scavenging rate,URE leading in ABTS•+free radical scavenging,and BE demonstrating superior ferric ion reducing antioxidant ***:The findings suggest that extraction methods signi

关键词： vine tea dihydromyricetin ultrasonic-assisted extraction volatile aroma components

某三甲医院3种免疫抑制剂治疗药物监测室内质量控制方法的建立及应用

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

中国医院药学杂志 2018年第8期38卷 822-824页

作者：童彤倪伟建唐丽琴屈建张善堂安徽医科大学附属省立医院药剂科安徽合肥230001

目的:建立3种免疫抑制剂治疗药物监测室内质量控制方法,提高治疗药物监测质量。方法:CMIA法测定质控样品中的3种免疫抑制剂的浓度,用"即刻法"建立中心线及控制限,并用Levey-Jennings法绘制质控图。结果:质控值基本落在珚x±2s(警戒线)... 详细信息

目的:建立3种免疫抑制剂治疗药物监测室内质量控制方法,提高治疗药物监测质量。方法:CMIA法测定质控样品中的3种免疫抑制剂的浓度,用"即刻法"建立中心线及控制限,并用Levey-Jennings法绘制质控图。结果:质控值基本落在珚x±2s(警戒线)范围内,CV值均小于10%,符合临床化学检验的基本要求。结论:建立的TDM室内质量控制方法,具有较好的精密度和稳定性,可满足TDM室内质控的要求。

关键词：治疗药物监测室内质量控制质控图

[Evaluation of the toxicity of perfluorooctanoic acid toward human colorectal cancer cells using multi-dimensional approaches]

在线全文

学校读者我要写书评

暂无评论

Se pu = Chinese journal of chromatography 2025年第1期43卷 96-103页

作者： Rui-Jia Zhang Ying-Shi Lin Lan-Yin Tu Zi-tong Chen wei-wei Zhang Tian-Gang Luan Bao-wei Chen School of Life and Health Sciences Hainan University Haikou 570228 China. School of Life Sciences Sun Yat-sen University Guangzhou 510275 China. School of Artificial Intelligence Sun Yat-sen University Zhuhai 519082 China. Guangzhou Center for Disease Control and Prevention Guangzhou 510440 China. School of Marine Sciences Sun Yat-sen University Zhuhai 519082 China.

While human exposure to perfluorooctanoic acid (PFOA) can lead to ulcerative colitis, the molecular mechanisms responsible for PFOA-induced intestinal toxicity are unclear. Herein, we examined the toxicity of PFOA toward human colorectal cancer cells (HCT116) from three dimensions: the cytotoxic phenotype, cell respiration, and transcription levels of metabolism-related genes. Formazan was used to assess how PFOA exposure affects HCT116-cell relative viability, after which the mitochondrial respiratory activities of these cells were determined by analyzing extracellular flux. The quantitative real-time polymerase chain reaction (qPCR) method was used to detect metabolism-related gene expression levels. The cytotoxicity assay revealed that the HCT116 showed significantly inhibited relative activities compared to those of the control when exposed to 300 μmol/L PFOA for 48 h (<0.01), with most cells retained at the G0/G1 stage. In contrast, the mitochondrial respiratory activities of the HCT116 were promoted by concentrations of PFOA as low as 50 μmol/L. Two genes related to cellular metabolism (dipeptidase 1 () and sphingosine kinase 1 ()) were found to be related to the PFOA-promoted formation of ulcerative colitis using our self-developed Metabolic Gene and Pathway Query software and Comparative Toxicogenomics Database (CTD). The qPCR studies revealed that and expression levels were enhanced by 8-10 times in HCT116 exposed to 300 μmol/L PFOA relative to the control, whereas this trend was not observed for HCT116 exposed to 50 μmol/L PFOA. Collectively, these results suggest that the respiratory activity of cellular mitochondria may serve as an index for determining the interference effects associated with PFOA and that metabolic pathways mediated by and may be involved in the development of PFOA-induced ulcerative colitis. Future studies should investigate the relationships between changes in metabolism-related genes ( and ) and the mitochondrial respiratory act

关键词： Metabolic Gene and Pathway Query software human colorectal enterotoxicity metabolic disorder perfluorooctanoic acid (PFOA)

Recent progress of layered memristors based on two-dimensional MoS2

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

Science China(Information Sciences) 2023年第6期66卷 26-35页

作者： wei tong Yuan LIU Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education School of Physics and ElectronicsHunan University

Memristors are memory-capable electronic components that consist of two terminals and a switching layer, whose resistance can be adjusted by an applied bias voltage. Two-dimensional(2D)materials with ultrathin layered structures are used as switching layers to overcome the limitations of traditional resistive materials in reducing the memristor sizes, demonstrating their potential in memory, flexible electronics,neuromorphic computing, and other related fields. Particularly, MoS2is widely used as a representative 2D semiconductor, and the MoS2-based memristors have been intensively studied. In this review article, we have summarized the recent progress of MoS2-based memristors, including the fabrication process, device structure, device performance, switching mechanism, and synaptic applications. In addition, we also discussed the prospects and challenges for their future development.

关键词： memristor switching mechanism MoS$_2$ 2D materials

Clogging processes caused by biofilm growth and organic particle accumulation in lab-scale vertical flow constructed wetlands

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2009年第6期21卷 750-757页

作者： ZHAO Lianfang ZHU wei tong wei College of Environmental Science and Engineering Hohai University Nanjing 210098 China Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes Ministry of Education of China Nanjing 210098 China

The accumulation of organic matter in substratum pores is regarded as an important factor causing clogging separately in the subsurface flow constructed *** this study,the developing process of clogging caused by biofilm growth or organic particle accumulation instead of total organic matter accumulation was investigated in two groups of lab-scale vertical flow constructed wetlands（VFCWs）,which were fed with glucose（dissolved organic matter） and starch（particulate organic matter） *** showed that the growth of biofilms within the substratum pores certainly caused remarkable reduction of effective porosity,especially for the strong organic wastewater,whereas its influence on infiltration rate was *** was implied that the most important contribution of biofilm growth to clogging was accelerating the occurrence of *** comparison with biofilm growth,particles accumulation within pores could rapidly reduce infiltration rate besides effective porosity and the clogging occurred in the upper 0-15 cm *** approximately equal amount of accumulated organic matter,the effective porosity of the clogged layer in starch-fed systems was far less than that of glucose-fed systems,which indicated that composition and accumulation mode in addition to the amount of the accumulated organic matter played an important role in causing clogging.

关键词： clogging constructed wetland organic matter particle accumulation biofilms

The Non-Inclusive Diagnosability of Regular Graphs

在线全文

学校读者我要写书评

暂无评论

Journal of the Operations Research Society of China 2023年第4期11卷 891-910页

作者： Yu-Long wei tong-tong Ding Min Xu School of Mathematical Sciences Beijing Normal UniversityLaboratory of Mathematics and Complex SystemsMinistry of EducationBeijing100875China Department of Mathematics Taiyuan University of TechnologyTaiyuan030024China

Fault diagnosis is an important area of study with regard to the design and maintenance of multiprocessor systems.A new measure for fault diagnosis of systems,namely,non-inclusive diagnosability(denoted by MM^(*)),was proposed by Ding et *** this paper,we establish the non-inclusive diagnosability of a class of regular graphs under the PMC model and the MM^(*)*** applications,the non-inclusive diagnosabilities of hypercubes,hierarchical hypercubes,folded hypercubes,star graphs,bubble-sort graphs,pancake graphs and dual cubes are determined under the PMC model and the[Math Processing Error]model.

关键词： PMC model MM^(*)model Regular graph Fault diagnosability

Boosting Oxygen Evolution Reaction Performance on NiFe‑Based Catalysts Through d‑Orbital Hybridization

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 2025年第1期17卷 281-292页

作者： Xing Wang wei Pi Sheng Hu Haifeng Bao Na Yao wei Luo State Key Laboratory of New Textile Materials and Advanced Processing Technology Key Laboratory of New Textile Materials and Applications of Hubei ProvinceSchool of Materials Science and EngineeringWuhan Textile UniversityWuhan 430200People’s Republic of China College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072People’s Republic of China

Anion-exchange membrane water electrolyzers(AEMWEs)for green hydrogen production have received intensive attention due to their feasibility of using earth-abundant NiFe-based *** introducing a third metal into NiFe-based catalysts to construct asymmetrical M-NiFe units,the d-orbital and electronic structures can be adjusted,which is an important strategy to achieve sufficient oxygen evolution reaction(OER)performance in ***,the ternary NiFeM(M:La,Mo)catalysts featured with distinct M-NiFe units and varying d-orbitals are reported in this *** and theoretical calculation results reveal that the doping of La leads to optimized hybridization between d orbital in NiFeM and 2p in oxygen,resulting in enhanced adsorption strength of oxygen intermediates,and reduced rate-determining step energy barrier,which is responsible for the enhanced OER *** critically,the obtained NiFeLa catalyst only requires 1.58 V to reach 1 A cm^(−2) in an anion exchange membrane electrolyzer and demonstrates excellent long-term stability of up to 600 h.

关键词： NiFe-based catalysts d-orbital coupling Oxygen evolution reaction Anion exchange membrane electrolyzer