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Giant magnetoresistance in antiferromagnetic Mn2Au-based tunnel junction

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Science China(Physics,Mechanics & Astronomy) 2020年第9期63卷 111-117页

作者： Xing-Tao Jia Xiao-lin cai Yu Jia School of Physics and Electronic Information Engineering Henan Polytechnic UniversityJiaozuo 454000China International Laboratory for Quantum Functional Materials of Henan School of PhysicsZhengzhou UniversityZhengzhou 450001China Key Laboratory for Special Functional Materials of Ministry of Education School of Materials Science and EngineeringHenan UniversityKaifeng 475004China

Recent studies on the electrical switching of tetragonal antiferromagnet(AFM)via Neél spin-orbit torque have paved the way for the economic use of antiferromagnetic *** most difficult obstacle that presently limits the application of antiferromagnetic materials in spintronics,especially in memory storage applications,could be the small and fragile magnetoresistance(MR)in the AFM-based *** this study,we investigated the spin transports in Mn2Au-based tunnel junctions based on the first-principle scattering *** MRs more than 1000%are predicted in some Fe/MgO/Ag/Mn2Au/Ta junctions that are about the same order as that in an MgO-based ferromagnetic tunnel junction with same barrier *** interplay of the spin filtering effect,the quantum well resonant states,and the interfacial resonant states could be responsible for the unusual giant and robust MRs observed in these Mn2Au-based junctions.

关键词： Mn2Au giant magnetoresistance tunnel junction

Vehicular Beacon Broadcast Scheduling Based on Age of Information(AoI)

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China Communications 2018年第7期15卷 67-76页

作者： Yuanzhi Ni lin cai Yuming Bo School of Automation Nanjing University of Science and Technology Department of Electrical & Computer Engineering University of Victoria

Vehicular beaconing plays an important role to facilitate various applications in the paradigm of Internet of Vehicles(IoV). Due to high dynamic and resource limitation in IoV, how to schedule the vehicular beacon broadcast is challenging, especially in dense scenarios. In this paper, we investigate the beacon broadcast scheduling problem considering the Age of Information(AoI). We first propose an algorithm minimizing the expected sum of AoI considering the limited communication resource and vehicle mobility. Then the performance of the proposed algorithm is analyzed. With the proposed algorithm, the optimal solution can be obtained under certain conditions. Extensive simulations are conducted to verify the efficiency, effectiveness and fairness of the proposed solution.

关键词： internet of vehicles beacon broadcast age of information

Spatial and temporal variability of colored dissolved organic matter absorption properties in the Taiwan Strait

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Acta Oceanologica Sinica 2012年第5期31卷 98-106页

作者： lin Hui GUO Weidong HU Minghui lin cai JI Weidong College of Ocean and Earth Sciences Xiamen UniversityXiamen 361005China Third Institute of Oceanography State Oceanic AdministrationXiamen 361005China

Spatial and temporal variability of the absorption properties of colored dissolved organic matter （CDOM） in the Taiwan Strait was investigated in summer （July to August of 2006） and winter （from December 2006 to January of 2007） seasons. The CDOM absorption coefficient at 280 nm （a 280 ） showed a decreasing trend from nearshore to offshore areas while the spectral slope coefficient parameter calculated between wavelengths 275–295 nm （S 275 295 ） showed an increase, indicative of decreasing aromaticity and molecular weight of the CDOM. The average a 280 in winter （1.47 ± 0.50 m ^-1 ） was significantly higher than in summer （1.10 ± 0.41 m ^-1 ）, while the average S 275 295 in winter （26.7 ± 5.2 μm^- 1 ） was significantly lower than in summer （30.6 ± 5.5 μm^- 1 ）, demonstrating clear seasonal variation in CDOM abundance and properties in the Taiwan Strait. A three-end- member conservative mixing model showed that local terrestrial CDOM inputs from several rivers along the western coast were small （〈5%）. However, the distribution of CDOM in the Taiwan Strait is mainly controlled by water mass movement [i.e., the Zhe-min Coastal Current （ZCC） and the Kuroshio Branch Current （KBC） in winter and the South China Sea Water （SCSW） in summer]. Biological activity was also an important factor affecting the distribution of CDOM in the offshore region in summer months.

关键词： colored dissolved organic matter absorption properties seasonal variation hydrology Taiwan Strait

Enhanced Healing of Full-thickness Diabetic Wounds Using Bioactive Glass and Yunnan Baiyao Ointments

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Journal of Wuhan University of Technology(Materials Science) 2014年第5期29卷 1063-1070页

作者：毛葱 lin cai 陈晓峰 The National Engineering Research Center for Tissue Restoration and Reconstruction The School of Materials Science and Engineering South China University of Technology Department of Burns The First Affiliated Hospital of Wenzhou Medical University

In order to accelerate the chronic wounds healing, we investigated the healing effects of bioactive glass and Yuunan baiyao ointments in streptozotocin-induced diabetic rats. The ointments were prepared by mixing 45S5 bioactive glass powder （16% weight） with Vaseline and different weight percentages of Yurman baiyao. Full-thickness defect wounds were created on the back of 130 SD rats and were randomly divided into 8 groups. The wound healing rates were calculated at 4, 7, 10, 14 and 21 days after surgery. The samples were harvested for further observations. Considering the wound closure rate, group 6 （with 5% Yuunan baiyao） has better wound healing performance than other diabetic groups. The lower inflammatory response was observed by gross observation and confirmed by the results of H＆E staining and TEM observation. Besides, the proliferation of fibroblasts, the formation of granulation tissue, as well as the vascularization, were improved in group 6 compared to other diabetic groups. All results suggest that bioactive glass and Yunnan baiyao ointments can accelerate the recovery of diabetes-impaired skin wounds, and comparing to other diabetic groups, group 6 （with 5% Yunnan baiyao） has better healing effect.

关键词： bioactive glass Yunnan baiyao diabetes mellitus wound healing

The Effects of Prey Items Diversity and Digestible Materials in Stomach on Digestive Tract Length in Hylarana guentheri

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Asian Herpetological Research 2020年第2期11卷 155-160页

作者： lin cai Jianping YU Chunlan MAI Wenbo LIAO Clinical Medicine Department of TCM and Western Medicine North Sichuan Medical CollegeNanchong 637000SichuanChina Key Laboratory of Southwest China Wildlife Resources Conservation(Ministry of Education) China West Normal UniversityNanchong 637009SichuanChina Key Laboratory of Artificial Propagation and Utilization in Anurans of Nanchong City China West Normal UniversityNanchong 637009SichuanChina Institute of Eco-adaptation in Amphibians and Reptiles China West Normal UniversityNanchong 637009SichuanChina

Difference in environmental condition shapes variation in digestive tract length in evolutionary *** particular,environmental difference results in variation in food resource among different habitats,and thereby affecting energy intake and energy *** digestive theory predicts that animals foraging high indigestible materials of stomach contents can promote the increased gut ***,we studied variation in digestive tract and gut length across six Hylarana guentheri populations at different altitudes and latitudes to test the prediction of the digestive *** found that altitude and latitude did not affect variation in relative size of digestive tract and gut among *** also found that relative size of digestive tract and gut did not be correlated with diversity of prey items,but negatively correlated with proportion of digestible *** findings suggest that individuals foraging less digestible materials display relatively longer digestive tract than individuals foraging more digestible materials.

关键词： altitude digestive tract digestible materials diversity of prey items Hylarana guentheri

A Class of Weighted Estimators for Additive Hazards Model in Case-cohort Studies

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Acta Mathematicae Applicatae Sinica 2014年第4期30卷 1153-1168页

作者： cai-lin DONG Jie ZHOU Liu-quan SUN School of Mathematics and Statistics Huazhong Normal University Academy of Mathematics and Systems Science Chinese Academy of Sciences School of Mathematics Capital Normal University

Case-cohort sampling is a commonly used and efficient method for studying large cohorts. In many situations, some covariates are easily measured on all cohort subjects, and surrogate measurements of the expensive covariates also may be observed. In this paper, to make full use of the covariate data collected outside the case-cohort sample, we propose＇a class of weighted estimators with general time-varying weights for the additive hazards model, and the estimators are shown to be consistent and asymptotically normal. We also identify the estimator within this class that maximizes efficiency, and simulation studies show that the efficiency gains of the proposed estimator over the existing ones can be substantial in practical situations. A real example is provided.

关键词： additive hazards case-cohort study stratified sampling survival data two-phase design

Base-Promoted Formylation and N-Difluoromethylation of Azaindoles with Ethyl Bromodifluoroacetate as a Carbon Source

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Chinese Journal of Chemistry 2021年第6期39卷 1477-1482页

作者： Yang Li Ning Sun cai-lin Zhang Meng Hao Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries School of Environmental and Chemical EngineeringXi'an Polytechnic UniversityXi'anShaanxi 710048China

We reported for the first time that ethyl bromodifluoroacetate directly reacts with azaindole without transition metal catalysis to produce a difluoromethyl protected 5-aldehyde group product in one *** is worth mentioning that the reacted aldehyde group is only formed at the 5 *** addition,this method has good substrate applicability and functional group ***,we also carried out some mechanism auxiliary experiments,which confirmed that the aldehyde-based carbon comes from ethyl bromodifluoroacetate.

关键词： Azaindoles C1 building blocks Difluoromethylene Hydrolysis Synthetic methods

Recent progress in wide field-of-view optical receivers

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Chinese Science Bulletin 2009年第20期54卷 3618-3622页

作者： LI GuangYuan cai lin XU AnShit State Key Laboratory of Advanced Optical Communication Systems & Networks School of Electronics Engineering and Computer Science Peking University Beijing 100871 China

The wide field-of-view(FOV) optical receiver has many advantages in optical wireless communication,sensing and ***,the FOV is limited by some tradeoffs of the receiver's components employing conventional optical ***,present mechanisms to extend the FOV are not *** realize the wide FOV receiver effectively,we propose surface plasmon polaritons(SPPs) as the potential *** examples are presented to lively illustrate SPPs' striking power to offer unexpected solutions to conventional *** is shown that unusual conditions should be explored to make use of SPPs under some *** of localized SPPs,which are independent of the incidence angle,are suggested as the mechanism for the wide FOV *** progress in the optimization of SPPs' excitation at oblique incidence is also reported.

关键词：光学接收器宽视场表面等离子体光无线通信许可证光接收机光学器件接收视场

Helicobacter pylori infection and risk of gastric cancer in Changle County,Fujian Province,China

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World Journal of Gastroenterology 2000年第3期6卷 374-376页

作者： lin cai Shun Zhang Yu Zuo Feng Zhang Department of Epidemiology Fujian Medical UniversityFuzhou 350004Fujian ProvinceChina Department of Epidemiology Shanghai Medical UniversityShanghai 200032China Department of Epidemiology UCLA School of Public HealthLos Angeles CaliforniaUSA

AIM To evaluate the effects of Helicobacterpylori infection and other environmental factorson the development of gastric *** A population-based case-controlstudy was conducted in Changle County,*** primary gastric cancer cases werehistologically confirmed or diagnosed by surgerybetween,January 1996 and March *** were randomly selected and matched byage,sex,and neighborhood of *** of 101 pairs were included in the *** trained interviewers conducted face-to-face interviews with the subjects according toa standardized *** infections were measured by serum IgGantibody to Helicobacter *** Regression analysis was *** The presence of IgG antibody toHelicobacter pylori was 63.7% in studysubjects,56.0% in patients with cardiac cancer,and 60.5% in patients with non-cardiac *** risk factors of gastric cancer inChangle County were identified such as loweducational level[OR=3.864;95% confidenceinterval(95% CI)1.604-9.311],lowconsumption of fresh vegetables(OR=4.925;95%Cl 1.356-17.885),high intake of fish sauce(OR=10.587;95% Cl 2.821-39.738),unscheduled meals(OR=4.254;95%Cl 1.445- 12.552),and Helicobacter pylori infection(OR=3.453;95%Cl 0.901-13.224).CONCLUSION Helicobacter pylori infectionmay be important in the etiology of gastriccancer,but major risk factors other thanHelicobacter pylori are responsible for the highgastric morbidity in Changle County.

关键词： Helicobacter pylori stomach neoplasm risk factors case control studies