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Journal of Rare Earths 2015年第8期33卷 830-836页

作者：高源胡曰博任鹏周大成邱建备 Faculty of Material Science and Engineering Kunming University of Science and Technology Faculty of Mechanical and Electrical Engineering Kunming University of Science and Technology Key Laboratory of Advanced Materials of Yunnan Province

The effect of glass network modifier R2O （R=Li, Na, K） on upconversion luminescence in Er3＋/yb3＋ co-doped NaYF4 oxyfluoride glass-ceramics was investigated. NaYF4 nanocrystals with different sizes were studied under glass network modifier alkali mental oxide. The nanocrystals size in NaYF4 of Li2O modified samples was 11 nm, whereas in the Na20 and K2O modified sample, the crystal size was 25 and 43 nm, respectively. It was found that red, yellow and green upconversions were observed in SAL, SAN, SAK glass ceramics. The reported results would deepen the understanding of size effects on the lanthanide upcon- version in nanocrystals.

关键词： upconversion luminescence glass network modifier glass ceramics crystallization activation energy rare earths

Geroprotection from ergothioneine treatment in Drosophila melanogaster by improving intestinal barrier and activation of intestinal autophagy

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Food Science and Human Wellness 2024年第6期13卷 3434-3446页

作者： Hongyu Pan Qianwang Zheng yuan Zou Guozhao Luo Mingzhen Tu Na Wang Jingru zhong Liqiong Guo Junfang Lin College of Food Science South China Agricultural UniversityGuangzhou 510640China Faculty of Food Science and Engineering Kunming University of Science and TechnologyKunming 650500China Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province Guangzhou 510640China Guangzhou Alchemy Biotechnology Co. Ltd.Guangzhou 510760China

Ergothioneine is a natural amino acid with powerful antioxidant *** studies have demonstrated that ergothioneine can increase the lifespan of Drosophila melanogaster and Caenorhabditis elegans,and enhance telomerase *** present study,the metagenomics sequencing and quantitative real-time polymerase chain reaction analysis were employed to characterize the composition and diversity of gut microbiome in aging *** the alterations in the gut barrier,gut morphology,and other gut physiological indicators of aging flies were ***,the results showed that ergothioneine induced little variations in gut microbiota composition in flies at mid-life,and significant alterations in the gut microbiota populations were only observed in flies at *** ergothioneine attenuated age-related gut injuries,including decreasing reactive oxygen species levels in intestinal enterocytes,reduction of intestinal cells death,and preservation of gut integrity in aging *** also improved the gut morphology by preserving the structure and shape of cell organelles and inducing the intestinal *** activation of intestinal autophagy also contributed to the longevity effect mediated by ergothioneine in an unidentified mechanism.

关键词： Ergothioneine Gut microbiota Intestinal autophagy Intestinal barrier Drosophila melanogaster

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Consensus for criteria of running a pediatric inflammatory bowel disease center using a modified Delphi approach

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World Journal of Pediatrics 2023年第10期19卷 939-948页

作者： You-You Luo Kai-Chun Wu Si-Tang Gong Ying Huang Hong Yang Qing-Ya Tang Ying-kit Leung Jie Wu Lan-Lan Geng Wei zhou Mei Sun Chao-Min Wan Zai-Ling Li Ying Fang Xiao-Qin Li Mei Li Zhao-Xia Wang yuan Xiao Xue-Mei zhong Xiao-Fei Chen Jie Chen Department of Gastroenterology Children’s HospitalZhejiang University School of MedicineHangzhou 310052China National Clinical Research Center for Child Health Hangzhou 310051China Department of Gastroenterology Xijing HospitalFourth Military Medical UniversityXi’an 710032China Department of Gastroenterology Guangzhou Women and Children’s Medical Center of Guangzhou Medical UniversityGuangzhou 510623China Department of Gastroenterology Children’s Hospital of Fudan UniversityShanghai 201102China Department of Gastroenterology Peking Union Medical College HospitalPeking Union Medical College&Chinese Academy of Medical ScienceBeijing 100730China Department of Clinical Nutrition Xinhua Hospital School of MedicineShanghai Jiao Tong UniversityShanghai 200092China Department of Pediatric Gastroenterology The First Hospital of Jilin UniversityJilin 130061China Department of Gastroenterology Beijing Children’s HospitalCapital Medical UniversityBeijing 100045China Department of General Surgery Sir Run Run Shaw HospitalCollege of MedicineZhejiang UniversityHangzhou 310016China Department of Gastroenterology Shengjing Hospital of China Medical UniversityShenyang 110004China Department of Pediatrics West China Second HospitalWest China Women’s and Children’s HospitalChengdu 610041China Department of Pediatrics Peking University Third HospitalBeijing 100191China Department of Gastroenterology Xi’an Children’s HospitalXi’an 710003China Department of Gastroenterology Children’s Hospital of Zhengzhou UniversityZhengzhou 450053China Department of Gastroenterology Children’s Hospital of Nanjing Medical UniversityNanjing 210008China Department of Gastroenterology Shenzhen Children’s HospitalShenzhen 518034China Department of Pediatrics Ruijing HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 350025China Department of Gastroenterology Children’s HospitalCapital Institute of PediatricsBeijing 100020China

Background Good quality of care for inflammatory bowel disease(IBD)depends on high-standard management and facility in the IBD ***,there are no clear measures or criteria for evaluating pediatric IBD(PIBD)center in *** aim of this study was to develop a comprehensive set of quality indicators(QIs)for evaluating PIBD center in *** A modified Delphi consensus-based approach was used to identify a set of QIs of structure,process,and outcomes for defining the *** process included an exhaustive search using complementary approaches to identify potential QIs,and two web-based voting rounds to select the QIs defining the criteria for PIBD *** A total of 101 QIs(35 structures,48 processes and 18 outcomes)were included in this *** QIs focused on the composition of multidisciplinary team,facilities and services that PIBD center should *** QIs highlight core requirements in diagnosing,evaluating,treating PIBD,and disease *** QIs mainly included criteria evaluating effectiveness of various interventions in PIBD *** The present Delphi consensus developed a set of main QIs that may be useful for managing a PIBD center.

关键词： Crohn’s disease Pediatric inflammatory bowel disease Quality indicators Ulcerative colitis

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薄原子蒸汽膜的双光子光谱及Dicke窄化

物理学报 2006年第12期55卷 6293-6297页

作者：李院院白晋涛张贵忠周瑜张彦鹏甘琛利宁夏师范学院物理与信息技术系固原756000 西北大学光子学与光子技术研究所光电子技术陕西省重点实验室西安710069 天津大学精密仪器与光电子工程学院天津300072 西安交通大学电子科学与技术系西安710049

薄原子蒸汽膜的单光子Dcike窄化吸收光谱可以拓展到双光子情形,以级联三能级系统为例,从理论上得到了亚多普勒结构的双光子吸收光谱,其线型表现出和单光子过程相似的与膜厚和探测光波长的比值(L/λ)相关的周期性.当L/λ=(2n+1)/2(膜厚... 详细信息

薄原子蒸汽膜的单光子Dcike窄化吸收光谱可以拓展到双光子情形,以级联三能级系统为例,从理论上得到了亚多普勒结构的双光子吸收光谱,其线型表现出和单光子过程相似的与膜厚和探测光波长的比值(L/λ)相关的周期性.当L/λ=(2n+1)/2(膜厚为半波长的奇数倍)时,吸收谱线窄化现象明显.当L/λ=2n/2(膜厚为半波长的偶数倍)时,单光子情形的谱线窄化现象消失,而双光子情形的谱线仍表现为亚多普勒结构,尤其在异侧入射的情形下,可以获得极窄的双光子谱线结构.这种结构来自原子与腔壁碰撞的消激发效应和双光子过程的抽运-探测机制的贡献.

关键词：薄原子蒸汽膜双光子光谱 Dicke窄化

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冷冻靶封装套中辅助热流密度的优化

原子能科学技术 2016年第4期50卷 627-634页

作者：殷阁媛厉彦忠郑江西安交通大学能源与动力工程学院动力工程多相流国家重点实验室陕西西安710049

为研究达到控温要求的冷冻靶封装套辅助加热量,建立了带有屏蔽罩和暴风窗的冷冻靶的二维轴对称模型。考虑封装套外屏蔽罩辐射强度和封装套内填充气体压力对冷冻靶温度场的影响,利用FLUENT软件对冷冻靶温度场进行了数值模拟计算。结果表... 详细信息

为研究达到控温要求的冷冻靶封装套辅助加热量,建立了带有屏蔽罩和暴风窗的冷冻靶的二维轴对称模型。考虑封装套外屏蔽罩辐射强度和封装套内填充气体压力对冷冻靶温度场的影响,利用FLUENT软件对冷冻靶温度场进行了数值模拟计算。结果表明:合理选择上、下辅助加热带的热流密度及其差值,可使靶丸外表面最大温差降至0.1mK以下;辐射强度越强,气体压力越大,靶丸表面最大温差越大,为实现靶丸外表面温度均匀性要求所施加的上、下辅助热流密度的差值就应越大。

关键词：非对称热流辐射强度气体压力自然对流

Polysiloxane with Pendant Benzo Crown Ether via a Spacer of Undecyloxymethyl as Stationary Phase for Capillary Chromatography

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Chemical Research in Chinese Universities 1994年第2期10卷 163-166页

作者： LU Xue-ran ZHANG Li-feng zhou Xi-chun WU Cai-ying and CHEN yuan-yin(Department of Chemistry, Wuhan University, Wuhan, 430072)

ＰｏｌｙｓｉｌｏｘａｎｅｗｉｔｈＰｅｎｄａｎｔＢｅｎｚｏＣｒｏｗｎＥｔｈｅｒｖｉａａＳｐａｃｅｒｏｆＵｎｄｅｃｙｌｏｘｙｍｅｔｈｙｌａｓＳｔａｔｉｏｎａｒｙＰｈａｓｅｆｏｒＣａｐｉｌｌａｒｙＣｈｒｏｍａｔｏｇｒａｐｈ... 详细信息

ＰｏｌｙｓｉｌｏｘａｎｅｗｉｔｈＰｅｎｄａｎｔＢｅｎｚｏＣｒｏｗｎＥｔｈｅｒｖｉａａＳｐａｃｅｒｏｆＵｎｄｅｃｙｌｏｘｙｍｅｔｈｙｌａｓＳｔａｔｉｏｎａｒｙＰｈａｓｅｆｏｒＣａｐｉｌｌａｒｙＣｈｒｏｍａｔｏｇｒａｐｈｙＬＵＸｕｅ－ｒａｎ；ＺＨＡＮＧＬ...

关键词： Polysiloxane Undecyloxy methyl spacer Crown ether

Analysis on the Variation Expression of Difficult-Dissolved-Proteins of Diapause Eggs After Activating by Acid Treatment

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Agricultural Sciences in China 2008年第12期7卷 1474-1480页

作者： ZHAO Feng LIN Jian-rong HUO Yong-kang MAO Li-ming KONG Qing-ming XU Qiu-yun zhong Yang-sheng WANG Ye-yuan Department of Silk Science College of Animal Science South China Agricultural University Guangzhou 510640 P.R.China

Using HCl to activate the diapause eggs is a traditional technique of artificial hatching applied in silkworm egg production. Its mechanism has not yet been clarified. This experiment explored the effect of HCl on the termination of diapause of silkworm eggs cold-stored for 45 days from the point of proteomes. Two-dimensional electrophoresis techniques and ESI- MS-MS were used to compare and analyze the variation expression of difficult-dissolved-proteins of diapause eggs coldstored for 45 days before and after acid treatment. Through analysis on the two-dimensional electrophoretogram, there were 296 dots before acid treatment and 302 after the treatment, respectively. Amongst them 265 dots were matchable. The matchability reached 88.6%. There were 31 specific protein dots before acid treatment and 37 after acid treatment, respectively. ESI-MS-MS analysis was conducted for two specific protein-rich dots which disappeared after acid treatment. The results indicated that the sequence of No. 1 protein dot had 55 amino acids＇ peptide matched with those of chorion protein （Bombyx mori）. While the sequence of No. 2 protein dot had only 15 amino acids＇ peptide matched with those of heat shock protein hsp 19.9 （Bombyx mori）, and it was presumed to be an unknown protein. The difficult-dissolvedproteins of diapause eggs have variation expression after acid treatment. Some proteins before and after acid treatment are changed in MW.

关键词： silkworm egg acid treatment protein electrophoresis image analysis

基于改进卡尔曼滤波器的扰动抑制无模型自适应控制方案

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控制理论与应用 2022年第7期39卷 1211-1218页

作者：卢行远侯忠生青岛大学自动化学院山东青岛266071

针对无模型自适应控制方法在测量扰动作用下控制效果不佳的问题,本文提出了一种新的扰动抑制无模型自适应控制方案.首先基于受控系统的动态线性化数据模型及测量扰动的统计特性,在最小方差估计准则下推导了基于系统输入输出数据的改进... 详细信息

针对无模型自适应控制方法在测量扰动作用下控制效果不佳的问题,本文提出了一种新的扰动抑制无模型自适应控制方案.首先基于受控系统的动态线性化数据模型及测量扰动的统计特性,在最小方差估计准则下推导了基于系统输入输出数据的改进卡尔曼滤波器.然后基于此滤波器给出了一种新的扰动抑制无模型自适应控制方案.该方案仅需用到受控系统的输入输出数据,即可实现在强测量扰动作用下系统的无模型自适应控制.仿真结果显示,相比现有的扰动抑制无模型自适应控制方案,该方案在系统跟踪常值参考信号、时变参考信号时均能有效地抑制测量扰动,适用性更好的同时可以获得更小的跟踪误差及更大的数据信噪比.

关键词：无模型自适应控制扰动抑制最小方差估计卡尔曼滤波

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Boost VS_(2) electrochemical reactive kinetics by regulating crystallographic planes and coupling carbon matrix for high performance sodium-ion storage

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Rare Metals 2024年第1期43卷 98-112页

作者： Min Zeng Ming-Shan Wang Lin Chen En-Zhi Li Zhen-Liang Yang Dan zhou Hai-Jiao Xie Jun-Chen Chen Zhi-yuan Ma Bing-Shu Guo Bo Yu Xing Li School of New Energy and Materials Southwest Petroleum UniversityChengdu 610500China Energy Storage Research Institute Southwest Petroleum UniversityChengdu 610500China Institute of Materials China Academy of Engineering PhysicsMianyang 621908China Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and TechnologyBeijingBeijing 100083China Hangzhou Yanqu Information Technology Co. Ltd.Hangzhou 310003China

Vanadium disulfide(VS_(2)) as a typical two-dimensional transition metal chalcogenide has excellent competitiveness for sodium-ion storage due to its wide layer spacing(0.575 nm),high theoretical capacity of 932mAh·g^(-1) originating from multi-electron electrochemical ***,continuous sodiation process accompanied by crystal structural evolution and collapse cause rapid capacity ***,novel few-layer VS_(2)nanosheets with open(001) crystal planes are in-situ constructed on reduced graphene oxide to solve these issues mentioned *** indicates that few-layer VS_(2)provides more Na^(+) storage activity due to the low Na^(+)surface migration energy barrier on exposed crystal(001)*** flexible and high electronic conductivity of carbon matrix also effectively builds multi-level buffer structure and electron transport kinetics to boost the Na^(+)insertion/conversion reactive activity on VS_(2) as well as Na^(+) pseudocapacitance storage kinetics on edges and defects of nano *** coupling effects result in high rate capability and long cycling stability as a battery/capacitor *** delivers conspicuous high energy density of 81 and 40 Wh·kg^(-1) at power density of 118 and 10,286W·kg^(-1),as well as 80% energy retention rate after 5000cycles,confirming its great application potential in sodiumbased storage devices.

关键词： Vanadium disulfide Reduced graphene oxide Anode Sodium-ion battery Sodium-ion capacitor

Physical Layer Security for Wireless and Quantum Communications

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ZTE Communications 2013年第3期11卷 1-2页

作者： Jinhong yuan Yixian Yang Nanrun zhou the School of Electrical Engineering and Telecom munications University of New South Wales Information Security Center Beijing University of Posts and Telecommunications the National Engineering Laboratory for Disaster Backup and Recovery National Key Laboratory for Network and Information Defense the School of Information Engineering Nanchang University

his special issue is dedicated to security problems in wireless and quan-turn communications. Papers for this issue were invited, and after peer review, eight were selected for publication. The first part of this issue comprises four papers on recent advances in physical layer security forwireless networks. The second Part comprises another four papers on quantum com- munications.

关键词： Security Physical Layer Security for Wireless and Quantum Communications