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Geodesic orbit metrics on homogeneous spaces constructed by strongly isotropy irreducible spaces

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Science China Mathematics 2021年第10期64卷 2313-2326页

作者： huibin chen Zhiqi chen Fuhai Zhu School of Mathematical Sciences Nanjing Normal UniversityNanjing 210023China School of Mathematical Sciences and LPMC Nankai UniversityTianjin 300071China Department of Mathematics Nanjing UniversityNanjing 210023China

In this paper,we focus on homogeneous spaces which are constructed from two strongly isotropy irreducible spaces,and prove that any geodesic orbit metric on these spaces is naturally reductive.

关键词： geodesic orbit metric homogeneous Riemannian manifold principal isotropy subgroup geodesic graph

Classification of invariant Einstein metrics on certain compact homogeneous spaces

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Science China Mathematics 2020年第4期63卷 755-776页

作者： Zaili Yan huibin chen Shaoqiang Deng Department of Mathematics Ningbo UniversityNingbo 315211China School of Mathematical Sciences and LPMC Nankai UniversityTianjin 300071China

In this paper,we study invariant Einstein metrics on certain compact homogeneous spaces with three isotropy *** show that,if G/K is a compact isotropy irreducible space with G and K simple,then except for some very special cases,the coset space G×G/△(K)carries at least two invariant Einstein ***,in the case that G1,G2 and K are simple Lie groups,with K■G1,K■G2,and G_1≠G2,such that G_1/K and G2/K are compact isotropy irreducible spaces,we give a complete classification of invariant Einstein metrics on the coset space G1×G2/△(K).

关键词： compact Lie group Einstein metric isotropy irreducible space

NEW NON-NATURALLY REDUCTIVE EINSTEIN METRICS ON Sp(n)

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Acta Mathematica Scientia 2021年第3期41卷 887-898页

作者： Shaoxiang ZHANG huibin chen Shaoqiang DENG School of Mathematical Sciences and LPMC Nankai UniversityTianjin 300071China School of Mathematical Sciences Nanjing Normal UniversityNanjing 210046China

In this paper, we consider a class of left invariant Riemannian metrics on Sp(n),which is invariant under the adjoint action of the subgroup Sp(n-3) × Sp(1) × Sp(1) × Sp(1).Based on the related formulae in the literature, we show that the existence of Einstein metrics is equivalent to the existence of solutions of some homogeneous Einstein equations. Then we use a technique of the Gr?bner basis to get a sufficient condition for the existence, and show that this method will lead to new non-naturally reductive metrics.

关键词： Einstein metric non-naturally reductive metric compact Lie group symplectic group

鱿鱼-铜盆鱼复合鱼糜凝胶品质和风味特性研究

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福建师范大学学报（自然科学版） 2024年第5期40卷 139-148页

作者：林靖莹任雯雯叶培洁宋心鹏薛诚甜陈彦臻陈慧斌福州海洋研究院/海洋活性物质与制品技术研发中心福建福州350117 福建师范大学生命科学学院福建福州350117 福建师范大学南方海洋研究中心福建福州350117

以秘鲁鱿鱼和铜盆鱼为原料,研究鱿鱼与铜盆鱼鱼糜质量比对鱿鱼-铜盆鱼复合鱼糜凝胶强度、水分分布状态、品质特性、挥发性风味的影响。结果表明,当鱿鱼和铜盆鱼鱼糜质量比为1∶4和2∶3时,白度和亮度较高,更符合消费者偏好;且凝胶强度和... 详细信息

以秘鲁鱿鱼和铜盆鱼为原料,研究鱿鱼与铜盆鱼鱼糜质量比对鱿鱼-铜盆鱼复合鱼糜凝胶强度、水分分布状态、品质特性、挥发性风味的影响。结果表明,当鱿鱼和铜盆鱼鱼糜质量比为1∶4和2∶3时,白度和亮度较高,更符合消费者偏好;且凝胶强度和质构特性较纯鱿鱼鱼糜(5∶0组)均得到了显著改善(P<0.05);持水性提高达78.46%和83.75%,蒸煮损失降低至7.92%和8.27%,结合水和不易流动水的横向弛豫时间降低,相对含量升高,凝胶内部结构更为紧密。随着鱿鱼鱼糜占比的增加,丰富了醇、醛和酮类挥发性化合物种类,且1-辛烯-3-醇、正庚醇和正己醛为鱼糜的特征风味物质。该研究可为鱿鱼复合鱼糜制品的开发提供一定的参考。

关键词：鱿鱼鱼糜凝胶品质风味特性

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Insights into salvianolic acid B biosynthesis from chromosome-scale assembly of the Salvia bowleyana genome

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Journal of Integrative Plant Biology 2021年第7期63卷 1309-1323页

作者： Xuehai Zheng Duo chen Binghua chen Limin Liang Zhen Huang Wenfang Fan Jiannan chen Wenjin He huibin chen Luqiang Huang Youqiang chen Jinmao Zhu Ting Xue The Public Service Platform for Industrialization Development Technology of Marine Biological Medicine and Products of the State Oceanic Administration Fujian Key Laboratory of Special Marine Bioresource Sustainable UtilizationSouthern Institute of OceanographyCollege of Life SciencesFujian Normal UniversityFuzhou 350117China

Salvia bowleyanais a traditional Chinese medic-inal plant that is a source of nutritional supple-ments rich in salvianolic acid B and a potentialexperimental system for the exploration ofsalvianolic acid B biosynthesis in the ***,we report a high‐quality chromosome‐scalegenome assembly of *** covering 462.44 Mb,with a scaffold N50 value of 57.96 Mband 44,044 annotated protein‐coding *** analysis revealed an estimateddivergence time *** its close *** of~3.94 *** also observed evidence of a whole‐genome duplication in *** analysis showed that SbPAL1(PHENYLALANINE AMMONIA‐LYASE1)ishighlyexpressed in roots relative to stem and leaves,paralleling the location of salvianolic acid *** laccase gene family in *** anaoutnumbered their counterparts *** and Arabidopsis thaliana,suggesting that the gene family has undergoneexpansion *** laccasegenes were also highly expressed in roots,wheretheir encoded proteins may catalyze the oxida-tive reaction from rosmarinic acid to salvianolicacid *** provide an invaluable ge-nomic resource for understanding salvianolicacid B biosynthesis and its regulation,and will beuseful for exploring the evolution of the Labiatae.

关键词： chromosomal assembly gene family genomeevolution Salvia bowleyana salvianolic acid B whole‐genome

Naringenin inhibits lipid accumulation by activating the AMPK pathway in vivo and in vitro

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Food Science and Human Wellness 2023年第4期12卷 1174-1183页

作者： Xiaoyu Cai Songxue Wang Huali Wang Suwen Liu Guishan Liu huibin chen Ji Kang Hao Wang State Key Laboratory of Food Nutrition and Safety College of Food Science and EngineeringTianjin University of Science and TechnologyTianjin 300457China China National Center for Food Safety Risk Assessment Beijing 100022China College of Food Science and Technology Hebei Normal University of Science and TechnologyQinhuangdao 066004China School of Food and Wine Ningxia UniversityYinchuan 750021China College of Life Sciences Fujian Normal UniversityFuzhou 350117China

The aim of this study was to explore the lipid-lowering effect of naringenin and the underlying mechanism in high-fat-diet-fed SD rats and 3T3-L1 *** this study,SD rats were divided into the normal chow diet group(NCD),high fat diet group(HFD),three treatment groups feeding high-fat diet with naringenin(100,200,400 mg/kg)for 12 *** indicated that naringenin treatment decreased total cholesterol(TC),triglyceride(TG)and the non-high-density lipoprotein cholesterol(non-HDL-C)levels in *** also alleviated hepatic steatosis and reduced the adipocyte size in the epididymis in high-fat-diet-induced SD *** addition,naringenin(25−75μg/mL)decrease TG and TC levels in 3T3 mature *** molecular mechanism of naringenin in the treatment of obesity were predicted by using network ***-time PCR analysis results showed that naringenin regulated the expression of lipid metabolism ***,naringenin increased the AMPK(AMP-activated protein kinase)activity and the expression of AMPK phosphorylated protein in 3T3 mature *** the inhibitory effect of naringenin on lipid accumulation in 3T3 adipocytes was abolished by Compound *** docking results indicated that naringenin could bind to AMPK *** results indicated naringenin reduced lipid accumulation through AMPK pathway.

关键词： Naringenin Lipid accumulation Molecular docking

Built defects of homogeneous junction to enhance the lithium storage capacity of niobium pentoxide materials

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Journal of Energy Chemistry 2024年第5期92卷 730-737页

作者： huibin Ding Yang Luo Zihan Song Cong chen Kai Feng Xiaofei Yang Hongzhang Zhang Xianfeng Li Division of Energy Storage National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China College of Chemistry&Engineering Yantai UniversityYantai 264005ShandongChina

Niobium pentoxide(Nb_(2)O_(5))is deemed one of the promising anode materials for lithium-ion batteries(LIBs)for its outstanding intrinsic fast Li-(de)intercalation *** specific capacity,however,is still limited,because the(de)intercalation of excessive Li-ions brings the undesired stress to damage Nb_(2)O_(5) *** increase the capacity of Nb_(2)O_(5) and alleviate the lattice distortion caused by stress,numerous homogeneous H-and M-phases junction interfaces were proposed to produce coercive stress within theNb_(2)O_(5)*** interfaces bring about rich oxygen vacancies with structural shrinkage tendency,which pre-generate coercive stress to resist the expansion stress caused by excessive Li-ions ***,the synthesized Nb_(2)O_(5) achieves the highest lithium storage capacity of 315 mA h g−1 to date,and exhibits high-rate performance(118 mA h g^(-1) at 20 C)as well as excellent cycling stability(138 mA h g^(-1) at 10 C after 600 cycles).

关键词： Niobiumpent oxide Homojunction polycrystalline Defects Oxygen vacancy

Colossal magnetoresistive p-n junctions of perovskite oxide La_(0.9)Sr_(0.1)MnO_3/SrNb_(0.01)Ti_(0.99)O_3

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Chinese Science Bulletin 2003年第13期48卷 1328-1330页

作者： L huibin, DAI Souyu, chen Zhenghao, YAN Lei, ZHOU Yueliang & YANG Guozhen Laboratory of Optical Physics, Institute of Physics & Center for Condensed Matter Physics, Chinese Academy of Sciences, 100080 Beijing, China Laboratory of Optical Physics Center for Condensed Matter Physics Chinese Academy of Sciences 100080 Beijing China

We have successfully fabricated the colossal magnetoresistive (CMR) p-n junctions of perovskite oxide La0.9Sr0.1MnO3/SrNb0.01Ti0.99O3 (LSMO/SNTO) with laser molecular beam epitaxy. The I-V characteristics of the LSMO/SNTO p-n junctions as a function of applied magnetic field (05 T) were studied between 100 and 300 K. We found that the p-n junction exhibited the CMR behavior. The CMR ratio rR/R0 (rR = RH - R0) is positive in magnetic fields below 0.13 T and at high temperature, while it displays a negative CMR near 100 K and in magnetic fields over 0.13 T. The CMR ratio values are 8% at 0.1 T and 13% at 5 T and 300 K, 40% at 0.1 T and 150 K, 10% at 0.13 T and 60% at 5 T and 100 K. The CMR behavior of the p-n junction is different from those of the LaMnO3 compound family.

关键词：巨磁电阻钙钛矿氧化物 LSMO/SNTO CMR 激光分子束外延超导体

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淡水养殖梭鱼的人工繁殖机理

水产学报 1989年第2期13卷 109-115页

作者：陈惠彬河北省水产研究所

1982～1986年;作者采用外源药理学方法,使淡水养殖梭鱼(S‰0.297-0.569)克服了“淡水不育症”,雌鱼性腺成熟率85％以上,完全取代了“海水过渡”。在人工催产中又克服了排卵机制的障碍及胚胎对环境的不适应,并对梭鱼亲鱼血清激素含量进... 详细信息

1982～1986年;作者采用外源药理学方法,使淡水养殖梭鱼(S‰0.297-0.569)克服了“淡水不育症”,雌鱼性腺成熟率85％以上,完全取代了“海水过渡”。在人工催产中又克服了排卵机制的障碍及胚胎对环境的不适应,并对梭鱼亲鱼血清激素含量进行放射免疫(RIA)测定及电子显微镜对梭鱼脑垂体亚显微结构进行观察。提出梭鱼存在血脑屏障。

关键词：淡水梭鱼人工繁殖外源药理学方法 “海水过渡”