检索结果-内蒙古大学图书馆

Predicting thermal decomposition temperatures of imidazolium-based energetic ionic liquids using norm indexes

Journal of Thermal Analysis and Calorimetry 2023年第11期148卷 4905-4912页

作者： Ding, Li Lu, Xiaowei Duan, Weijia Pan, Yong Zhang, Xin Shu, Chi-Min School of Automotive and Rail Transit Nanjing Institute of Technology Jiangsu Nanjing211167 China College of Safety Science and Engineering Nanjing Tech University Jiangsu Nanjing211816 China Jiangsu Key Laboratory of Hazardous Chemicals Safety and Control Nanjing Tech University Jiangsu Nanjing211816 China Department of Safety Health and Environmental Engineering National Yunlin University of Science and Technology Yunlin64002 Taiwan

Energetic ionic liquids (EILs) have been widely applied in propellants, high-energy explosives, etc., but may trigger thermal hazards. Predicting the thermal decomposition temperature (Td) is of great importance to EILs. In this work, a quantitative structure–property relationship model is developed to predict the Td of imidazolium-based EILs from their molecular structures. By using the norm index descriptors, both the structure of ions and the interaction of anions with cations are well described. To screen out the optimal subset of norm indexes that are closely related to Td of imidazolium-based EILs, the genetic algorithm-based multiple linear regression method is used. The developed model demonstrates the high accuracy, reaching a coefficient of determination (R2), leave-one-out cross-validation coefficient QLoo2, and external validation coefficient QEXT2 as 0.842, 0.842, and 0.833 between the predicted against experimental values, respectively. It is extensively validated by internal and external validation strategies. Compared with the reported models, our proposed model based on norm indexes demonstrates a stronger predictive ability. This work provides a reliable model to predict the Td of imidazolium-based EILs, which is expected to provide guidance for the design of new EILs. © 2023, Akadémiai Kiadó, Budapest, Hungary.

关键词： Forecasting

来源：评论

学校读者我要写书评

暂无评论

Thermal reaction characterization of nano-aluminum powder at different heating rates by synchronous thermal analysis

引用

Journal of Thermal Analysis and Calorimetry 2023年第11期148卷 4937-4947页

作者： Qu, Jiao Deng, Jun Luo, Zhen-Min Xiao, Yang Shu, Chi-Min School of Safety Science and Engineering Xi’an University of Science and Technology No. 58 Yanta Mid. Rd. Shaanxi Xi’an710054 China Postdoctoral Program Xi’an University of Science and Technology No. 58Yanta Mid. Rd. Shaanxi Xi’an710054 China Shaanxi Key Laboratory of Prevention and Control of Coal Fire No. 58 Yanta Mid. Rd. Shaanxi Xi’an710054 China Graduate School of Engineering Science and Technology National Yunlin University of Science & Technology 123 University Rd. Sec. 3 Yunlin Douliou64002 Taiwan

This article reports an investigation on the thermal reactivity of nano-aluminum powder (NAP) in the air. We performed tests on the metallic powder in synchronous thermal analysis at four heating rates of 5, 10, 15, and 20 °C min−1. Given the polymorphic phase change of aluminum, the oxidation process of NAP was divided into four stages. The results showed a notable effect from the heating rate on the oxidation of NAP. The mass gain decreased at stage II and increased at stage IV as the rate of heating increased. The maximum mass gain rate at 5, 10, 15, and 20 °C min−1 was 2.38, 4.70, 33.79, and 53.38% min−1, respectively, while the thermal release was 35,126, 27,955, 15,608, and 16,336 J g−1, respectively. Furthermore, the average apparent activation energy, preexponential factor, and mechanism function were obtained by the kinetic integral method. © 2023, Akadémiai Kiadó, Budapest, Hungary.

关键词： Heating rate

来源：评论

学校读者我要写书评

暂无评论

在SrTiO_(3)/SrRuO_(3)异质结忆阻器件中实现电阻态高保持性

引用

science China Materials 2023年第3期66卷 1140-1147页

作者：王廷泽夏剑杨蕊缪向水 Wuhan National Laboratory for Optoelectronics School of Integrated CircuitsSchool of Optical and Electronic InformationHuazhong University of Science and TechnologyWuhan 430074China Hubei Yangtze Memory Laboratories Wuhan 430205China State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

忆阻器的阻变动态特性与生物突触的工作过程相似,是构建硬件人工神经网络突触器件的有力候选者之一.在人工神经网络中,尤其是对于推理过程,要求突触权重具有好的保持性.然而,许多忆阻器的电阻态随着时间的推移出现阻态漂移,特别是基于... 详细信息

忆阻器的阻变动态特性与生物突触的工作过程相似,是构建硬件人工神经网络突触器件的有力候选者之一.在人工神经网络中,尤其是对于推理过程,要求突触权重具有好的保持性.然而,许多忆阻器的电阻态随着时间的推移出现阻态漂移,特别是基于氧离子迁移的氧化物忆阻器尤为严重.在本工作中,我们研制了基于Pt/SrTiO_(3)/SrRuO_(3)异质结的忆阻器,器件表现出了非常好的保持性.通过对其电传输机制和界面微观结构的研究,发现在SrTiO_(3)/SrRuO_(3)界面形成了富含SrO的界面层,由于氧空位在该界面层迁移的势垒较高,因此该界面层可限制氧空位在外加电场撤去后的自扩散,进而提高了器件电阻态的保持性.基于可图案化的底部电极、线性电导调制和神经网络模拟的优异性能,该器件在硬件神经形态计算中具有潜在应用价值.

关键词：人工神经网络忆阻器神经网络模拟候选者界面层图案化传输机制外加电场

来源：评论

学校读者我要写书评

暂无评论

Akkermansia muciniphila isolated from forest musk deer ameliorates diarrhea in mice via modification of gut microbiota

引用

Animal Models and Experimental Medicine 2025年第2期8卷 295-306页

作者： Yan Deng Yan Wang Ying Liu Xiaoli Yang Hai Zhang Xiaochang Xue Yi Wan Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry College of Life SciencesShaanxi Normal UniversityXi'anChina Shaanxi Institute of Microbiology Xi'anChina NMPA Key Laboratory for Testing Technology of Pharmaceutical Microbiology Shaanxi Institute for Food and Drug ControlXi'anChina Department of Cell Biology National Translational Science Center for Molecular MedicineFourth Military Medical UniversityXi'anChina

Background:The forest musk deer,a rare fauna species found in China,is famous for its musk secretion which is used in selected Traditional Chinese ***,over-hunting has led to musk deer becoming an endangered species,and their survival is also greatly challenged by various high incidence and high mortality respiratory and intestinal diseases such as septic pneumonia and *** evidence has demonstrated that Akkermannia muciniphila(AKK)is a promising probiotic,and we wondered whether AKK could be used as a food additive in animal breeding pro-grammes to help prevent intestinal ***:We isolated one AKK strain from musk deer feces(AKK-D)using an im-proved enrichment medium combined with real-time *** confirmation by 16S rRNA gene sequencing,a series of in vitro tests was conducted to evaluate the probiotic effects of AKK-D by assessing its reproductive capability,simulated gas-trointestinal fluid tolerance,acid and bile salt resistance,self-aggregation ability,hy-drophobicity,antibiotic sensitivity,hemolysis,harmful metabolite production,biofilm formation ability,and bacterial adhesion to gastrointestinal ***:The AKK-D strain has a probiotic function similar to that of the standard strain in humans(AKK-H).An in vivo study found that AKK-D significantly amelio-rated symptoms in the enterotoxigenic Escherichia coli(ETEC)-induced murine diar-rhea ***-D improved organ damage,inhibited inflammatory responses,and improved intestinal barrier ***,AKK-D promoted the reconsti-tution and maintenance of the homeostasis of gut microflora,as indicated by the fact that AKK-D-treated mice showed a decrease in Bacteroidetes and an increase in the proportion of other beneficial bacteria like Muribaculaceae,Muribaculum,and unclas-sified f_Lachnospiaceae compared with the diarrhea model ***:Taken together,our data show that this novel AKK-D strain might be a potential probiotic for use in mus

关键词： Akkermansia muciniphila diarrhea enterotoxigenic Escherichia coli forest musk deer gut microbiota

来源：评论

学校读者我要写书评

暂无评论

Zinc lactate alleviates oxidative stress by modulating crosstalk between constitutive androstane receptor signaling pathway and gut microbiota profile in weaned piglets

引用

Animal Nutrition 2024年第1期16卷 23-33页

作者： Wenjie Tang Xuan Xiang Houfu Wang Wentao Zhou Liuqin He Yulong Yin Tiejun Li College of Animal Science and Technology Hunan Agricultural UniversityChangsha 410128China Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process CAS Key Laboratory of Agro-Ecological Processes in Subtropical RegionNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation Laboratory of Animal Nutrition and Human HealthCollege of Life SciencesHunan Normal UniversityChangsha 410081China College of Advanced Agricultural Science University of Chinese Academy of SciencesBeijing 100049China Sichuan Academy of Animal Sciences Animal Breeding and Genetics Key Laboratory of Sichuan ProvinceChengdu 610066China Livestock and Poultry Biological Products Key Laboratory of Sichuan Province Sichuan Animtech Feed Co.LtdChengdu 610000China

This study aimed to determine the regulatory mechanism of dietary zinc lactate(ZL)supplementation on intestinal oxidative stress damage in a paraquat(PQ)-induced piglet ***-eight piglets(mean body weight 9.51±0.23 kg)weaned at 28 d of age were randomly divided into control,ZL,PQ,and ZL+PQ groups(n=7 in each group).The ZL-supplemented diet had little effect on growth performance under normal physiological ***,under PQ challenge,ZL supplementation significantly improved average daily gain(P<0.05)and reduced the frequency of *** improved intestinal morphology and ultrastructure by significantly increasing the expression level of the jejunal tight junction protein,zonula occludens-1(ZO-1)(P<0.05),and intestinal zinc transport and absorption in PQ-induced piglets,which reduced intestinal *** supplementation also enhanced the expression of antioxidant and antiinflammatory factor-related genes and decreased inflammatory cytokine expression and secretion in PQinduced ***,ZL treatment significantly inhibited the activation of constitutive androstane receptor(CAR)signaling(P<0.01)in PQ-induced piglets and altered the structure of the gut microbiota,especially by significantly increasing the abundance of beneficial gut microbes,including UCG_002,Ruminococcus,Rikenellaceae_RC9_gut_group,Christensenellaceae_R_7_group,Treponema,unclassified_Christensenellaceae,and unclassified_Erysipelotrichaceae(P<0.05).These data reveal that pre-administration of ZL to piglets can suppress intestinal oxidative stress by improving antioxidant and anti-inflammatory capacity and regulating the crosstalk between CAR signaling and gut microbiota.

关键词： Zinc lactate Intestinal barrier Oxidative stress Inflammation Constitutive androstane receptor Gut microbiota

来源：评论

学校读者我要写书评

暂无评论

A five-parameter constitutive model for hysteresis shearing and energy dissipation of rock joints

引用

International Journal of Mining science and technology 2022年第4期32卷 737-746页

作者： Yikun Li Tongbin Zhao Yifei Li Yang Chen College of Energy and Mining Engineering Shandong University of Science and TechnologyQingdao 266590China State Key Laboratory of Mining Disaster Prevention and Control Cofounded by Shandong Province and the Ministry of Science and Technology Shandong University of Science and TechnologyQingdao 266590China National Demonstration Center for Experimental Mining Engineering Education Shandong University of Science and TechnologyQingdao 266590China School of Civil and Transportation Engineering Qinghai Nationalities UniversityXining 810007China Shandong Energy Group Co. Ltd.Jinan 250014China

Rock joints exhibit hysteresis shearing behavior and produce energy dissipation under shear cyclic loads,which however cannot be accurately depicted by existing constitutive models. This paper establishes a constitutive model for hysteresis shearing and associated energy dissipation of rock joints. Analytical expressions of the model during cyclic shearing processes are derived. Derivation of the model indicates no energy dissipation in the elastic stage. When the shear load exceeds elastic boundary, nonlinear energy dissipation takes place. Validations with experiments show that the proposed model provides good conformities with direct shear curves and hysteresis loops, and can predict the energy dissipation characteristics of rock joints under different working conditions. Compared to the constitutive models using Weibull's distribution, the proposed one is smooth at the elastic boundary and can accurately capture the maximum shear stress. Unlike the existing incremental-type models, the proposed one provides clear and direct analytical expressions for both shear stress and energy dissipation during the whole displacement domain, which is more convenient in application.

关键词： Iwan model Rock joint Cyclic shear Hysteresis Energy dissipation

来源：评论

学校读者我要写书评

暂无评论

Photonic RF Channelization Based on Electro-Optic Ring Modulator

Photonic RF Channelization Based on Electro-Optic Ring Modul...

引用

2023 International Topical Meeting on Microwave Photonics, MWP 2023

作者： Wan, Zhengyi Cen, Qizhuang Ding, Yuedi Xia, Jinsong Xu, Kun Li, Ming Dai, Yitang Beijing University of Posts and Telecommunications State Key Laboratory of Information Photonics and Optical Communications Beijing China Chinese Academy of Sciences State Key Laboratory on Integrated Optoelectronics Institute of Semiconductors Beijing China Huazhong University of Science and Technology Wuhan National Laboratory for Optoelectronics Wuhan China

ISBN: (纸本)9798350342215

A novel microwave photonic channelization scheme for a broadband radio frequency (RF) signal based on an electro-optic ring modulator is proposed and demonstrated. Due to the modulation and filtering functions of the ring resonator, the proposed microwave photonic channelizer can simplify the general traveling-wave modulator and optical filter into a single ring. In the proposed scheme, the input RF signal is multicast by an optical frequency comb (OFC), spectrally sliced by the ring resonator, and then channelized by an optical wavelength-division multiplexer (WDM). An 8-channel channelizer centered at 21~28 GHz with a 1 GHz step is achieved by numerical simulation and experiment. © 2023 IEEE.

关键词： Optical resonators

来源：评论

学校读者我要写书评

暂无评论

A Short-term Aircraft Trajectory Prediction Framework Using Conditional Generative Adversarial Network 4

A Short-term Aircraft Trajectory Prediction Framework Using ...

引用

4th IEEE International Conference on Civil Aviation Safety and Information technology, ICCASIT 2022

作者： Hu, Qinzhi Huang, Guoxin Shi, Han Lin, Yi Guo, Dongyue National Key Laboratory of Air Traffic Control Automation System Technology College of Computer Science Sichuan University Chengdu China National Key Laboratory of Fundamental Science on Synthetic Vision Sichuan University Chengdu China

ISBN: (数字)9781665467667

ISBN: (纸本)9781665467667

Short-term aircraft trajectory prediction (TP) plays an important role in current air traffic control systems. However, existing works usually perform the multi-horizon TP task in an iterated manner which easily suffers from error accumulation problems. In this work, a novel short-term aircraft TP framework, called TPGAN, is proposed which predicts the multi-horizon trajectory in a single step using the conditional generative adversarial network (CGAN). Compared with the conventional approaches, the TP task is formulated to the probability distribution estimate problems by CGAN architecture. In this framework, the generator is employed to output the predictions while the discriminative features between ground truth and predictions are learned by the discriminator. The generative adversarial training strategy is applied to optimize the proposed framework. Moreover, to validate the generality and effectiveness of the proposed framework, three neural network architectures are designed to develop the proposed framework, including Conv1D-TPGAN, Conv2D-TPGAN, and LSTM-TPGAN. In addition, a dataset collected from real-world ATC systems is used to construct the experiments. The experimental results demonstrated that the proposed framework achieves significantly performance improvements than baseline. © 2022 IEEE.

关键词： Air traffic control

来源：评论

学校读者我要写书评

暂无评论

Waveguide integrated nonreciprocal optical routers for silicon photonics

Waveguide integrated nonreciprocal optical routers for silic...

引用

CLEO: science and Innovations, S and I 2022

作者： Yan, Wei Qin, Jun Deng, Longjiang Bi, Lei National Engineering Research Center of Electromagnetic Radiation Control Materials University of Electronic Science and Technology of China Chengdu610054 China State Key Laboratory of Electronic Thin-Films and Integrated Devices University of Electronic Science and Technology of China Chengdu610054 China

We report a silicon integrated 5×5 nonreciprocal optical router based on the magneto-optical nonreciprocal phase shift effect. The device shows an asymmetric scattering matrix, with 16 dB isolation ratio and -22 ... 详细信息

ISBN: (纸本)9781557528209

关键词： Silicon photonics

来源：评论

学校读者我要写书评

暂无评论

Comparative genomics of widespread and narrow-range white-bellied rats in the Niviventer niviventer species complex sheds light on invasive rodent success

引用

Zoological Research 2023年第6期44卷 1052-1063页

作者： Xin-Lai Wu Dan-Ping Mu Qi-Sen Yang Yu Zhang Yu-Chun Li Anderson Feijó Ji-Long Cheng Zhi-Xin Wen Liang Lu Lin Xia Zhi-Jun Zhou Yan-Hua Qu De-Yan Ge Key Laboratory of Zoological Systematics and Application of Hebei Province College of Life SciencesHebei UniversityBaodingHebei 071002China Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeichen West RoadChaoyang DistrictBeijing 100101China Xinjiang Key Laboratory of Biological Resources and Genetic Engineering College of Life Science and TechnologyXinjiang UniversityUrumqiXinjiang 830046China Marine College Shandong UniversityWeihaiShandong 264209China State Key Laboratory for Infectious Diseases Prevention and Control National Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 102206China Hebei Basic Science Center for Biotic Interaction Institute of Life Science and Green DevelopmentHebei UniversityBaodingHebei 071002China

Widespread species that inhabit diverse environments possess large population sizes and exhibit a high capacity for environmental adaptation,thus enabling range *** contrast,narrow-range species are confined to restricted geographical areas and are ecologically adapted to narrow environmental conditions,thus limiting their ability to expand into novel ***,the genomic mechanisms underlying the differentiation between closely related species with varying distribution ranges remain poorly *** Niviventer niviventer species complex(NNSC),consisting of highly abundant wild rats in Southeast Asia and China,offers an excellent opportunity to investigate these questions due to the presence of both widespread and narrow-range species that are phylogenetically closely *** the present study,we combined ecological niche modeling with phylogenetic analysis,which suggested that sister species cannot be both widespread and dominant within the same geographical ***,by assessing heterozygosity,linkage disequilibrium decay,and Tajima's D analysis,we found that widespread species exhibited higher genetic diversity than narrow-range *** addition,by exploring the“genomic islands of speciation”,we identified 13 genes in highly divergent regions that were shared by the two widespread species,distinguishing them from their narrow-range *** annotation analysis indicated that these genes are involved in nervous system development and *** adaptive evolution of these genes likely played an important role in the speciation of these widespread species.

关键词： Niviventer niviventer species complex Widespread species Narrow-range species Speciation Genomic islands of differentiation Phylogenomics

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：