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High energy storage properties of(Nb_(0.5)La_(0.5))^(4+)complex-ion modified(ba_(0.85)Ca_(0.15))(Zr_(0.10)Ti_(0.90))O_(3)ceramics

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Journal of Advanced Dielectrics 2024年第4期14卷 51-62页

作者： Yaqiong Sun Santan dang Zhanhui Peng Bi Chen Yibing Zhang Di Wu Pengfei Liang Lingling Wei Xiaolian Chao Zupei Yang Key Laboratory for Macromolecular Science of Shaanxi Province Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Laboratory for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University Xi’an 710062ShaanxiP.R.China School of Chemistry and Chemical Engineering Yulin University Yulin 719000ShaanxiP.R.China School of Physics and Information Technology Shaanxi Normal University Xi’an 710062ShaanxiP.R.China School of Chemistry and Chemical Engineering Shaanxi Normal University Xi’an 710062ShaanxiP.R.China

In this work,a traditional solid-state method was adopted to prepare dense ba_(0.85)Ca_(0.15)[(Zr_(0.1)Ti_(0.9))_(1-x)–(Nb_(0.5)La_(0.5))_(x)]O_(3)(BCZT–xNL)lead-free relaxation ferroelectrics with excellent energy storage performance(ESP).Remarkably,a large breakdown field strength of BDS(-410 kV/cm)resulting from decreased grain size by double ions doping at the B-site was achieved in BCZT–xNL ***,the BCZT–0.12NL ceramic displays a good recoverable energy density(W_(rec))of 3.1 J/cm^(3),a high efficiency of 86.7%(η)and a superior fatigue resistance,as well as a superior charge–discharge performance(C_(D)-1623.14 A/cm^(2),P_(D)-162.31 MW/cm^(3),W_(D)-1.30 J/cm^(3),t_(0.9)-49.6 ns)and good thermal ***,upon NL doping,the FE to RFE phase transition results in a dielectric behavior traversing the relaxation phase(γ1.84)accompanied by frequency dispersion,which is beneficial to improve *** superior ESP in this work indicates that BCZT–0.12NL ceramics are a promising candidate used in energy storage capacitors.

关键词： Co-doped BCZT ceramics relaxor ferroelectric high BDS energy storage

Gait Optimization of a Quadruped Robot Using Evolutionary Computation

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Journal of Bionic Engineering 2021年第2期18卷 306-318页

作者： Jihoon Kim dang Xuan ba Hoyeon Yeom Joonbum bae Mechanical Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan 44919South Korea Automatic Control HoChiMinh City University of Technology and Education(HCMUTE)HoChiMinh City 71307Vietnam

Evolutionary Computation(EC)has strengths in terms of computation for gait ***,conventional evolutionary algorithms use typical gait parameters such as step length and swing height,which limit the trajectory deformation for optimization of the foot ***,the quantitative index of fitness convergence is *** this paper,we perform gait optimization of a quadruped robot using foot placement perturbation based on *** proposed algorithm has an atypical solution search range,which is generated by independent manipulation of each placement that forms the foot trajectory.A convergence index is also introduced to prevent premature cessation of *** conventional algorithm and the proposed algorithm are applied to a quadruped robot;walking performances are then compared by gait *** the two algorithms exhibit similar computation rates,the proposed algorithm shows better fitness and a wider search *** evolutionary tendency of the walking trajectory is analyzed using the optimized results,and the findings provide insight into reliable leg trajectory design.

关键词： bionic robot evolutionary computation genetic algorithm gait optimization parameter perturbation convergence index

Is convenience really king? Comparative evaluation of catastrophic costs due to tuberculosis in the public and private healthcare sectors of Viet Nam: a longitudinal patient cost study

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贫困所致传染病(英文) 2024年第2期13卷 1-12页

作者： Nguyen Hoa Binh Quang Vo Luan Nguyen Forse Rachel Jeanette Wiemers Anja Maria Christine Huynh Huy ba Dong Thuy Thi Thu Phan Yen Thi Hoang Creswell Jacob dang Thi Minh Ha Nguyen Lan Huu Shedrawy Jad L?nnroth Knut Nguyen Tuan Dinh Van Dinh Luong Annerstedt Kristi Sidney Codlin Andrew James National Lung Hospital Ha Noi Viet Nam Friends for International TB Relief Ha Noi Viet Nam Department of Global Public Health WHO Collaboration Centre On Tuberculosis and Social Medicine Karolinska Institute Stockholm Sweden Stop TB Partnership Geneva Switzerland Pham Ngoc Thach Hospital Ho Chi Minh City Viet Nam

background In Viet Nam, tuberculosis (TB) represents a devastating life-event with an exorbitant price tag, partly due to lost income from daily directly observed therapy in public sector care. Thus, persons with TB may seek care in the private sector for its flexibility, convenience, and privacy. Our study aimed to measure income changes, costs and catastrophic cost incurrence among TB-affected households in the public and private *** Between October 2020 and March 2022, we conducted 110 longitudinal patient cost interviews, among 50 patients privately treated for TB and 60 TB patients treated by the National TB Program (NTP) in Ha Noi, Hai phong and Ho Chi Minh City, Viet Nam. Using a local adaptation of the WHO TB patient cost survey tool, participants were interviewed during the intensive phase, continuation phase and post-treatment. We compared income levels, direct and indirect treatment costs, catastrophic costs using Wilcoxon rank-sum and chi-squared tests and associated risk factors between the two cohorts using multivariate *** The pre-treatment median monthly household income was significantly higher in the private sector versus NTP cohort (USD 868 vs USD 578;P=0.010). However, private sector treatment was also significantly costlier (USD 2075 vs USD 1313;P=0.005), driven by direct medical costs which were 4.6 times higher than costs reported by NTP participants (USD 754 vs USD 164;P<0.001). This resulted in no significant difference in catastrophic costs between the two cohorts (Private: 55% vs NTP: 52%;P=0.675). Factors associated with catastrophic cost included being a single-person household [adjusted odds ratio [(aOR=13.71; 95% confidence interval (CI): 1.36–138.14;P=0.026], unemployment during treatment (aOR=10.86; 95%CI: 2.64–44.60;P<0.001) and experiencing TB-related stigma (aOR=37.90; 95%CI: 1.72–831.73;P=0.021).Conclusions Persons with TB in Viet Nam face similarly high risk of catastrophic costs whether treated in the

关键词： Tuberculosis Patient cost Catastrophic cost Private sector Comparative analysis Viet Nam

肝硬化失代偿期继发肝性脑病的危险因素及预后分析

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临床和实验医学杂志 2024年第1期23卷 9-12页

作者：胡向党巴晓彤朱萍北京市大兴区人民医院急诊内科北京102600

目的分析肝硬化失代偿期(DLC)继发肝性脑病的危险因素及预后。方法回顾性选择2019年1月至2022年1月在北京市大兴区人民医院诊治的131例DLC患者作为研究对象,根据患者是否继发肝性脑病分为肝硬化失代偿期组(DLC组)和DLC继发肝性脑病组(DL... 详细信息

目的分析肝硬化失代偿期(DLC)继发肝性脑病的危险因素及预后。方法回顾性选择2019年1月至2022年1月在北京市大兴区人民医院诊治的131例DLC患者作为研究对象,根据患者是否继发肝性脑病分为肝硬化失代偿期组(DLC组)和DLC继发肝性脑病组(DLC+HEC组)。分析并比较DLC组和DLC+HEC组患者临床资料的差异。单因素和多因素Logistics回归分析DLC继发肝性脑病的危险因素。采用受试者工作特征(ROC)曲线分析预测DLC继发肝性脑病1年死亡的敏感度及特异度。结果DLC+HEC组患者的年龄、住院时间、ALT、AST、TBIL、APACHEⅡ评分、Child-Pugh分级C级比例及血氨分别为(64.5±8.2)岁、(18.7±2.6)d、(98.1±8.5)U/L、(82.4±7.3)U/L、(23.9±3.2)分、60.00%、(72.1±8.3)μmol/L,均显著高于DLC组[(57.4±7.5)岁、(11.5±1.8)d、(71.4±7.2)U/L、(67.1±6.6)U/L、(17.3±3.5)分、18.60%、(54.4±6.9)μmol/L],差异均有统计学意义(P<0.05)。单因素Logistics回归分析发现患者年龄、ALT、AST、TBIL、APACHEⅡ评分、Child-Pugh分级及血氨与肝DLC继发肝性脑病风险显著相关(P<0.05)。多因素Logistics回归分析发现年龄、APACHEⅡ评分、Child-Pugh分级及血氨为DLC继发肝性脑病的独立危险因素(P<0.05)。年龄预测DLC肝性脑病1年死亡截断值为66.7岁,敏感度为0.823,特异度为0.793;APACHEⅡ评分预测DLC肝性脑病1年死亡截断值为24.5分,敏感度为0.807,特异度为0.756;Child-Pugh分级预测DLC肝性脑病1年死亡截断值C级,敏感度为0.782,特异度为0.824;血氨预测DLC肝性脑病1年死亡截断值为75.3μmol/L,敏感度为0.855,特异度为0.863。结论年龄、APACHEⅡ评分、Child-Pugh分级及血氨为DLC继发肝性脑病的独立危险因素,且与患者预后相关。年龄≥66.7岁、APACHEⅡ评分≥24.5分、Child-Pugh分级C级及血氨≥75.3μmol/L提示预后不良。

关键词：肝硬化失代偿期肝性脑病危险因素预后

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基于并行化处理的无人机影像三维重建算法

激光与光电子学进展 2024年第8期61卷 99-107页

作者：陈怀圆党建武岳彪杨景玉兰州交通大学光电技术与智能控制教育部重点实验室甘肃兰州730070 轨道交通信息与控制国家级虚拟仿真实验教学中心甘肃兰州730070 兰州交通大学电子与信息工程学院甘肃兰州730070

针对增量运动恢复结构(SFM)算法在重建大规模无人机影像数据集时效率低、易产生场景漂移的问题,提出一种可并行化处理的增量SFM重建算法。首先,利用词汇树图像检索结果约束图像特征匹配的空间搜索范围,提高图像特征匹配的效率。其次,综... 详细信息

针对增量运动恢复结构(SFM)算法在重建大规模无人机影像数据集时效率低、易产生场景漂移的问题,提出一种可并行化处理的增量SFM重建算法。首先,利用词汇树图像检索结果约束图像特征匹配的空间搜索范围,提高图像特征匹配的效率。其次,综合考虑特征匹配数量和无人机平台获取的全球定位系统(GPS)信息构建无向加权场景图,并选用归一化割算法将场景图划分为多个相互重叠的子集。然后,将每个子集分布在多核CPU上并行执行增量SFM重建算法。最后,基于子集间公共重建点和强相关子集优先被合并的策略实现子集合并。此外,结合GPS信息为光束法平差(ba)代价函数添加位置约束项,有效消除每次执行ba优化引入的误差。为了验证所提算法的有效性,在3个无人机数据集上进行实验,实验结果表明,所提算法相比原始增量SFM重建算法不仅显著提高了位姿估计和场景重建的效率,而且合理优化了重建结果的精度。

关键词：增量运动恢复结构光束法平差词汇树图像检索归一化割场景合并

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菠萝皮与不同比例王草和百香果藤混合青贮研究

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动物营养学报 2024年第1期36卷 637-649页

作者：崔智海李雪枫展小霞党佳皓王坚海南大学动物科技学院海口570228 海南大学林学院海口570228

本试验旨在探究菠萝皮、王草和百香果藤不同混合比例对青贮饲料发酵品质和微生物多样性的影响。以菠萝皮、王草和百香果藤为原料,将三者分别按鲜重比3∶6∶1、3∶5∶2、3∶4∶3、3∶3∶4和3∶2∶5分为5个组进行混合青贮,在室温条件下青... 详细信息

本试验旨在探究菠萝皮、王草和百香果藤不同混合比例对青贮饲料发酵品质和微生物多样性的影响。以菠萝皮、王草和百香果藤为原料,将三者分别按鲜重比3∶6∶1、3∶5∶2、3∶4∶3、3∶3∶4和3∶2∶5分为5个组进行混合青贮,在室温条件下青贮40 d后,对青贮饲料的发酵品质、营养成分含量和微生物多样性进行分析。结果表明:1)随着百香果藤混合比例的提高,青贮饲料pH以及氨态氮(NH 3-N)和丁酸(ba)含量呈提高趋势,其中3∶6∶1组pH最低,显著低于除3∶5∶2组外的其他组(Pba含量显著低于其他各组(Pbacillus),而3∶4∶3组和3∶3∶4组的优势菌门和优势菌属分别为变形菌门(Proteobacteria)和泛菌属(Pantoea)。综上所述,3∶6∶1组青贮饲料发酵效果最好,在青贮生产实践中推荐菠萝皮、王草和百香果藤的混合比例为3∶6∶1。

关键词：菠萝皮王草百香果藤混合青贮发酵品质微生物多样性

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Two haplotype-resolved genome assemblies for AAB allotriploid bananas provide insights into banana subgenome asymmetric evolution and Fusarium wilt control

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Plant Communications 2024年第2期5卷 243-260页

作者： Wen-Zhao Xie Yu-Yu Zheng Weidi He Fangcheng Bi Yaoyao Li Tongxin Dou Run Zhou Yi-Xiong Guo Guiming Deng Wenhui Zhang Min-Hui Yuan Pablo Sanz-Jimenez Xi-Tong Zhu Xin-Dong Xu Zu-Wen Zhou Zhi-Wei Zhou Jia-Wu Feng Siwen Liu Chunyu Li Qiaosong Yang Chunhua Hu Huijun Gao Tao Dong Jiangbo dang Qigao Guo Wenguo Cai Jianwei Zhang Ganjun Yi Jia-Ming Song Ou Sheng Ling-Ling Chen Institute of Fruit Tree Research Guangdong Academy of Agricultural SciencesKey Laboratory of South Subtropical Fruit Biology and Genetic Resource UtilizationMinistry of Agriculture and Rural AffairsGuangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree ResearchGuangzhou 510640China College of Informatics Huazhong Agricultural UniversityWuhan 430070China State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources College of Life Science and TechnologyGuangxi UniversityNanning 530004China College of Horticulture and Landscape Architecture Southwest UniversityChongqing 400715China

bananas(Musa spp.)are one of the world’s most important fruit crops and play a vital role in food security for many developing *** banana cultivars are triploids derived from inter-and intraspecific hybrid-izations between the wild diploid ancestor species Musa acuminate(AA)and ***(BB).We report two haplotype-resolved genome assemblies of the representative AAB-cultivated types,Plantain and Silk,and precisely characterize ancestral contributions by examining ancestry mosaics across the *** asymmetric evolution is observed in their subgenomes,which can be linked to frequent homol-ogous exchange *** reveal the genetic makeup of triploid banana cultivars and verify that subge-nome B is a rich source of disease resistance *** 58.5%and 59.4%of Plantain and Silk genes,respectively,are present in all three haplotypes,with>50%of genes being differentially expressed alleles in different *** observed that the number of upregulated genes in Plantain is significantly higher than that in Silk at one-week post-inoculation with Fusarium wilt tropical race 4(Foc TR4),which con-firms that Plantain can initiate defense responses faster than ***,we compared genomic and transcriptomic differences among the genes related to carotenoid synthesis and starch metabolism between Plantain and *** study provides resources for better understanding the genomic architecture of culti-vated bananas and has important implications for Musa genetics and breeding.

关键词： bananas Plantain Silk asymmetric evolution homologous exchange Fusarium wilt

What is an ant colony odour, how it is produced and modulates behavior changes

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Soil Gas Radon Measurement for Identifying Active Faults in Thua Thien Hue (Vietnam)

Biological Consequences of Global Change 4th International Symposium of Integrative Zoology

作者： Jean-Marc JALLON Christophe LUCAS dang Bha pho Dominique FRESNEAU Marla SOKOLOWSKI CNPS Universite de Paris Sud 11Orsay CedexFrance Department of Ecology and Evolution Universite de LausanneLausanneFrance LEEC Universite de Paris Nord 13ParisFrance Department of Biology University of TorontoCanada

＜正＞Cuticular hydrocarbons（HC）play a number of roles in insects from water-proofing,thermal insulation,protection from predators,to chemical communication,reproduction isolation,and kin and species recognition.A growing body of experimental evidence suggests that insect HC play an important role in social insect nestmate *** detailed analysis of cuticular hydrocarbon composition has

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Journal of Geoscience and Environment Protection 2020年第7期8卷 44-64页

作者： Pham Tich Xuan Nguyen Anh Duong Vu Van Chinh Pham Thanh dang Nguyen Xuan Qua Nguyen Van pho Institute of Geological Sciences Vietnam Academy of Science and Technology Hanoi Vietnam Institute of Geophysics Vietnam Academy of Science and Technology Hanoi Vietnam

The solid-state nuclear track detectors have long been applied to assess the activity of tectonic faults. We measured the Radon (Rn) concentration in soil gas on 09 profiles with a total of 245 measurement points in Thua Thien Hue area (Vietnam). Measurement results show that the Rn concentration in soil gas ranges from ~10 Bq/m3 to 144,570 Bq/m3. There is a clear difference in the Rn concentration on the granite rock of Dai Loc complex compared to the remaining rocks. The calculated background value and anomaly threshold of Rn concentration on the granite rock of Dai Loc complex and on the remaining rocks are 33,488 Bq/m3, 82,839 Bq/m3 and 5313 Bq/m3, 24,850 Bq/m3 respectively. Spatial distribution of Rn concentration in soil gas reflects the existence of faults since Rn concentration increases at the points above or near fault lines. The level of expression of fault activity is assessed by radon activity index (KRn), which is calculated by the ratio of anomaly value to background value of Rn concentration. According to KRn, in Thua Thien Hue area, only the Dakrong-Hue fault shows a strong expression of activity with high and very high KRn (the maximum KRn = 27.21). The Truong Son, Huu Trach River, Ta Trach River and Bo River fault zones do not show clear activity with low and medium KRn. There is no Rn anomaly value recorded on the Rao Trang fault, demonstrating that it is likely to be inactive at present. The study results indicate that the Rn concentration in soil gas is a strong evidence of the existence of faults or tectonic fracture zones as the Rn concentration always increases at the points above or near the fault line.

关键词： Radon Active Fault Radon Activity Index Thua Thien Hue Vietnam