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Optimization for epitaxial fabrication of infinite-layer nickelate superconductors

Frontiers of physics 2024年第3期19卷 61-69页

作者： Minghui Xu Yan zhao Xiang Ding Huaqian Leng Shu Zhang Jie Gong Haiyan Xiao Xiaotao Zu Huiqian Luo ke-Jin Zhou Bing Huang Liang Qiao School of Physics University of Electronic Science and Technology of ChinaChengdu 610054China Beijing Computational Science Research Center Beijing 100193China Diamond Light Source Harwell CampusDidcot OX110DEUnited Kingdom Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China

The discovery of nickelates superconductor creates exciting opportunities to unconventional superconductivity. However, its synthesis is challenging and only a few groups worldwide can obtain samples with zero-resistance. This problem becomes the major barrier for this field. From plume dynamics perspective, we found the synthesis of superconducting nickelates is a complex process and the challenge is twofold, i.e., how to stabilize an ideal infinite-layer structure Nd_(0.8)Sr_(0.2)NiO_(2), and then how to make Nd_(0.8)Sr_(0.2)NiO_(2) superconducting? The competition between perovskite Nd_(0.8)Sr_(0.2)NiO_(3) and Ruddlesden−Popper defect phase is crucial for obtaining infinite-layer structure. Due to inequivalent angular distributions of condensate during laser ablation, the laser energy density is critical to obtain phase-pure Nd_(0.8)Sr_(0.2)NiO_(3). However, for obtaining superconductivity, both laser energy density and substrate temperature are very important. We also demonstrate the superconducting Nd_(0.8)Sr_(0.2)NiO_(2) epitaxial film is very stable in ambient conditions up to 512 days. Our results provide important insights for fabrication of superconducting infinite-layer nickelates towards future device applications.

关键词： nickelate superconductivity infinite-layer plasma condensate plume dynamics

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Unraveling magnetic properties and martensitic transformation in Mn-rich Ni-Mn-Sn alloys:first-principles calculations and experiments

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Rare Metals 2024年第4期43卷 1769-1785页

作者： Yu Zhang Jing Bai ke-Liang Guo Jia-Xin Xu Jiang-Long Gu Nicola Morley Qui-Zhi Gao Yu-Dong Zhang Claude Esling Xiang zhao Liang Zuo key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) School of Material Science and EngineeringNortheastern UniversityShenyang110819China key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province School of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao066004China Department of Material Science and Engineering University of SheffieldSheffieldS13JDUK State key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao066004China Laboratoire d’Étude des Microstructures Et de Mécanique des Matériaux University of Lorraine57045MetzFrance

We have investigated the phase stability,magnetic properties,and martensitic transformation thermodynamics/kinetics of the Ni_(24-x)Mn_(18+x+y)Sn_(6-y)(x,y=0,1,2)system by combining the first-principles calculations and *** calculation results show that the optimized lattice parameters are consistent with the experimental ***,we obtain the relation equation for the austenite formation energy(E_(form-A))and Mn content(X_(Mn)):E_(form-A)=507.358X_(Mn)-274.126,as well as for the six-layer modulated(6M)martensite formation energy(E_(form-6M))and Ni content(X_(Ni)):E_(form-6M)=-728.484X_(Ni)+*** ternary phase diagram of the total magnetic moment was *** excess Mn will reduce the total magnetic moment of 6M(Mag6M)and non-modulated(NM)(MagNM)martensites,with the following equations relating the total magnetic moment and Mn content:Mag_(6M)=-15.905X_(Mn)+7.902and Mag_(NM)=-14.781X_(Mn)+7.411,while the effect on austenite is *** variation of total magnetic moment is mainly dominated by the Mn atomic magnetic *** 3d electrons of Mn_(Sn)(Mn at Sn sublattice)play an important role in magnetic properties from the perspective of the electronic density of *** on the thermodynamics of martensitic transformation,the alloys will likely undergo austenite?6M?NM transformation *** the thermodynamic and kinetic results,the martensitic transformation temperature decreases with x increasing and increases with y *** results are expected to provide reference for predicting the phase stability and magnetic properties of NiMn-Sn alloys.

关键词： Ni-Mn-Sn First-principles calculations Martensitic transformation Magnetic property Kinetics

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Absorbed Bioactive Compounds Replicate GuanxinⅡ-Induced Endothelium-Associated in/ex vivo Vasodilation

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Chinese Journal of Integrative Medicine 2024年第5期30卷 387-397页

作者： XU Min LIU Hao SU Meng-qing LI Lan YU Ai-ling CHEN ken HUANG Yun-ke zhao Qiu-long HUANG Wen-ya HUANG Xi Institute of Traditional Chinese Medicine Related Comorbid Depression Nanjing University of Chinese MedicineNanjing 210029China Department of Gynecology Women's HospitalZhejiang University School of MedicineHangzhou 310053China

Objective:To develop an interference-free and rapid method to elucidate GuanxinⅡ(GXⅡ)'s representative vasodilator absorbed bioactive compounds(ABCs)among enormous ***:The contents of ferulic acid,tanshinol,and hydroxysafflor yellow A(FTA)in GXⅡ/rat serum after the oral administration of GXⅡ(30 g/kg)were detected using ultra-performance liquid chromatography-mass *** 18 rats were randomly assigned to the control group(0.9%normal saline),GXⅡ(30 g/kg)and FTA(5,28 and 77 mg/kg)by random number table *** coronary flow velocity-time integral(VTI),i.e.,coronary flow or coronary flow-mediated dilation(CFMD),and endothelium-intact vascular tension of isolated aortic rings were *** 12 h of exposure to blank medium or 0.5 mmol/L H_(2)O_(2),endothelial cells(ECs)were treated with post-dose GXⅡof supernatant from deproteinized serum(PGSDS,300μL PGSDS per 1 m L of culture medium)or FTA(237,1539,and 1510 mg/m L)for 10 min as control,H_(2)O_(2),PGSDS and FTA *** oxide(NO),vascular endothelial growth factor(VEGF),endothelin-1(ET-1),superoxide dismutase(SOD),malondialdehyde(MDA)and phosphorylated phosphoinositide 3 kinase(p-PI3K),phosphorylated protein kinase B(p-AKT),phosphorylated endothelial nitric oxide synthase(p-e NOS)were *** was developed as a GXⅡproxy of ex vivo herbal crude ***:PGSDS effectively eliminates false responses caused by crude GXⅡ*** doses equaled the contents in GXⅡ/its post-dose serum,FTA accounted for 98.17%of GXⅡ-added CFMD and 92.99%of PGSDS-reduced vascular *** ECs,FTA/PGSDS was found to have significant antioxidant(lower MDA and higher SOD,Pkedly abolished by NG-nitro-L-arginine methyl ester(L-NA,e NOS inhibitor)and wortmannin(PI3K/AKT inhibitor

关键词： ultra-performance liquid chromatography-mass spectrometry endothelium-dependent vasodilation herbal extract GuanxinⅡ absorbed bioactive compound

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Ultrafast laser-induced decomposition for selective activation of GaAs

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Light(Advanced Manufacturing) 2024年第2期5卷 87-94页

作者： ke-Mi Xu Chao Liu Lei Wang Feng-Chun Pang Xin-Jing zhao Xian-Bin Li Qi-Dai Chen Wei-Qian zhao MIIT key Laboratory of Complex-field Intelligent Exploration School of Optics and PhotonicsBeijing Institute of TechnologyBeijing100081China State key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin University2699 Qianjin StreetChangchun 130012China

The manipulation of micro/nanostructures to customise their inherent material characteristics has garnered considerable *** this study,we present the selective activation of gallium arsenide(GaAs)via ultrafast laser-induced decomposition,which correlates with the emergence of ripples on the *** instigated a pronounced enrichment in the arsenic(As)concentration around the surface while inducing a depletion of gallium(Ga)at the structural *** simulations based on first principles exhibited a robust inclination towards the phase separation of GaAs,with the gasification of As-As pairs proving more facile than that of Ga-Ga pairs,particularly above the melting point of *** an illustrative application,a metal-semiconductor hybrid surface was confirmed,showing surface chemical bonding and surface-enhanced Raman scattering(SERS)through the reduction of silver ions on the laser-activated *** laser-induced selective activation holds promise for broader applications,including the controlled growth of Pd and the development of Au/Ag alloy-based platforms,and thereby opens innovative avenues for advancements in semiconductors,solar cell technologies,precision sensing,and detection methodologies.

关键词： Laser-induced activation Decomposition Laser-induced ripples Reduction SERS

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青稞种质资源抗条纹病鉴定及抗病基因分子检测

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四川农业大学学报 2024年第2期42卷 296-305页

作者：龙有赵珂侯璐青海大学农林科学院/青海省农林科学院/青海省农业有害生物综合治理重点实验室/青藏高原生物技术教育部重点实验室西宁810016

【目的】为发掘更多的抗条纹病青稞种质资源,明确抗条纹病基因在青稞种质资源中分布状况。【方法】选用127份青稞种质资源,利用2个菌株室内人工接种方法进行抗病性鉴定和评价,并利用3个已知抗条纹病基因的SSR分子标记引物进行检测。【... 详细信息

【目的】为发掘更多的抗条纹病青稞种质资源,明确抗条纹病基因在青稞种质资源中分布状况。【方法】选用127份青稞种质资源,利用2个菌株室内人工接种方法进行抗病性鉴定和评价,并利用3个已知抗条纹病基因的SSR分子标记引物进行检测。【结果】127份资源中综合抗病表现免疫、高抗、中抗、高感和中感的分别有13、26、19、52和17份,分别占鉴定材料总数10.24%、20.47%、14.96%、40.94%和13.39%。Rdg基因分子标记检测结果表明,可能携带Rdg1a、Rdg2a和Rdg3的青稞种质资源数分别有3、40和11份,分别占供试材料的2.36%、31.50%和8.66%。【结论】‘青0027’可能同时含有Rdg2a和Rdg3这2个抗性基因。

关键词：青稞条纹病抗病性鉴定分子检测

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Coupled strategy based on regulator manipulation and medium optimization empowers the biosynthetic overproduction of lincomycin

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Synthetic and Systems Biotechnology 2024年第1期9卷 134-143页

作者： Xinlu Cai Wanlian Xu Yang Zheng Sendi Wu Rundong zhao Nian Wang Yaqian Tang Meilan ke Qianjin Kang Linquan Bai Buchang Zhang Hang Wu School of Life Sciences Institute of Physical Science and Information TechnologyAnhui UniversityHefei230601China State key Laboratory of Microbial Metabolism Shanghai Jiao Tong UniversityShanghai200240China

The biosynthesis of bioactive secondary metabolites,specifically antibiotics,is of great scientific and economic *** control of antibiotic production typically involves different processes and molecular *** numerous efforts to improve antibiotic yields,joint engineering strategies for combining genetic manipulation with fermentation optimization remain *** A(Lin-A),a lincosamide antibiotic,is industrially fermented by Streptomyces ***,the leucine-responsive regulatory protein(Lrp)-type regulator SLCG_4846 was confirmed to directly inhibit the lincomycin biosynthesis,whereas indirectly controlled the transcription of SLCG_2919,the first reported repressor in *** of SLCG_4846 in the high-yield *** LA219X(LA219XΔ4846)increases the Lin-A production and deletion of SLCG_2919 in LA219XΔ4846 exhibits superimposed yield *** the effect of the double deletion on cellular primary metabolism of ***,Plackett-Burman design,steepest ascent and response surface methodologies were utilized and employed to optimize the seed medium of this double mutant in shake flask,and Lin-A yield using optimal seed medium was significantly increased over the *** strategies were performed in a 15-L *** maximal yield of Lin-A in LA219XΔ4846-2919 reached 6.56 g/L at 216 h,55.1%higher than that in LA219X at the parental cultivation(4.23 g/L).This study not only showcases the potential of this strategy to boost lincomycin production,but also could empower the development of high-performance actinomycetes for other antibiotics.

关键词： Streptomyces Transcription factor Genetic engineering Fermentation optimization Lincomycin

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Small molecule deoxynyboquinone triggers alkylation and ubiquitination of keap1 at Cys489 on kelch domain for Nrf2 activation and inflammatory therapy

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Journal of Pharmaceutical Analysis 2024年第3期14卷 401-415页

作者： ke-Gang Linghu Tian Zhang Guang-Tao Zhang Peng Lv Wen-Jun Zhang Guan-Ding zhao Shi-Hang Xiong Qiu-Shuo Ma Ming-Ming zhao Meiwan Chen Yuan-Jia Hu Chang-Sheng Zhang Hua Yu State key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoMacao SARChina Macao Centre for Research and Development in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoMacao SARChina key Laboratory of Tropical Marine Bio-resources and Ecology Guangdong Key Laboratory of Marine Materia MedicaRNAM Center for Marine MicrobiologySouth China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou510301China State key Laboratory of Functions and Applications of Medicinal Plants&School of Pharmaceutical Sciences Guizhou Medical UniversityGuiyang550025China

Activation of nuclear factor erythroid 2-related factor 2(Nrf2)by kelch-like ECH-associated protein 1(keap1)alkylation plays a central role in anti-inflammatory ***,activators of Nrf2 through alkylation of keap1-kelch domain have not been ***(DNQ)is a natural small molecule discovered from marine *** current study was designed to investigate the anti-inflammatory effects and molecular mechanisms of DNQ via alkylation of *** exhibited significant anti-inflammatory properties both in vitro and in *** pharmacophore responsible for the anti-inflammatory properties of DNQ was determined to be theα,β-unsaturated amides moieties by a chemical reaction between DNQ and *** exerted anti-inflammatory effects through activation of Nrf2/ARE ***1 was demonstrated to be the direct target of DNQ and bound with DNQ through conjugate addition reaction involving *** specific alkylation site of DNQ on keap1 for Nrf2 activation was elucidated with a synthesized probe in conjunction with liquid chromatography-tandem mass *** triggered the ubiquitination and subsequent degradation of keap1 by alkylation of the cysteine residue 489(Cys489)on keap1-kelch domain,ultimately enabling the activation of *** findings revealed that DNQ exhibited potent anti-inflammatory capacity throughα,β-unsaturated amides moieties active group which specifically activated Nrf2 signal pathway via alkylation/ubiquitination of keap1-kelch domain,suggesting the potential values of targeting Cys489 on keap1-kelch domain by DNQ-like small molecules in inflammatory therapies.

关键词： Deoxynyboquinone Anti-inflammation Target keap1/Nrf2 Alkylation Ubiquitination

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Multi-region calcium imaging in freely behaving mice with ultra-compact head-mounted fluorescence microscopes

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National Science Review 2024年第1期11卷 161-173页

作者： Feng Xue Fei Li ke-ming Zhang Lufeng Ding Yang Wang Xingtao zhao Fang Xu Danke Zhang Mingzhai Sun Pak-Ming Lau Qingyuan Zhu Pengcheng Zhou Guo-Qiang Bi Department of Precision Machinery and Precision Instruments University of Science and Technology of China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Interdisciplinary Center for Brain Information the Brain Cognition and Brain Disease Institute Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Faculty of Life and Health Sciences Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences School of Life Sciences University of Science and Technology of China Institute of Semiconductors Chinese Academy of Sciences Department of Modern Life Sciences and Biotecnology Xiongan Institute of Innovation Xiongan New Area Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions Suzhou Institute for Advanced Research University of Science and Technology of China Institute of Artiflcial Intelligence Hefei Comprehensive National Science Center

To investigate the circuit-level neural mechanisms of behavior, simultaneous imaging of neuronal activity in multiple cortical and subcortical regions is highly desired. Miniature head-mounted microscopes offer the capability of calcium imaging in freely behaving animals. However, implanting multiple microscopes on a mouse brain remains challenging due to space constraints and the cumbersome weight of the ***, we present TINIscope, a Tightly Integrated Neuronal Imaging microscope optimized for electronic and opto-mechanical design. With its compact and lightweight design of 0.43 g, TINIscope enables unprecedented simultaneous imaging of behavior-relevant activity in up to four brain regions in ***-of-concept experiments with TINIscope recorded over 1000 neurons in four hippocampal subregions and revealed concurrent activity patterns spanning across these regions. Moreover, we explored potential multi-modal experimental designs by integrating additional modules for optogenetics, electrical stimulation or local field potential recordings. Overall, TINIscope represents a timely and indispensable tool for studying the brain-wide interregional coordination that underlies unrestrained behaviors.

关键词： miniature microscope multiple sites calcium imaging multimodal integration hippocampus

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Retrospective analysis based on a clinical grading system for patients with hepatic hemangioma:A single center experience

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World Journal of Gastrointestinal Surgery 2024年第7期16卷 2047-2053页

作者： Cheng-Ming Zhou Jun Cao Shao-ke Chen Tuerhongjiang Tuxun Shadike Apaer Jing Wu Jin-Ming zhao Hao Wen Department of Liver and Laparoscopic Surgery Digestive and Vascular Surgery CenterThe First Affiliated Hospital of Xinjiang Medical UniversityUrumqi 830054Xinjiang Uygur Autonomous RegionChina Department of Operation Management The First Affiliated Hospital of Xinjiang Medical UniversityUrumqi 830054Xinjiang Uygur Autonomous RegionChina Department of General Surgery The First Teaching CollegeXinjiang Medical UniversityUrumqi 830054Xinjiang Uygur Autonomous RegionChina State key Laboratory of Pathogenesis Prevention and Treatment of High Incidence Diseases in Central AsiaThe First Affiliated Hospital of Xinjiang Medical UniversityUrumqi 830054Xinjiang Uygur Autonomous RegionChina

BACKGROUND The optimal approach for managing hepatic hemangioma is *** To evaluate a clinical grading system for management of hepatic hemangioma based on our 17-year of single institution *** A clinical grading system was retrospectively applied to 1171 patients with hepatic hemangioma from January 2002 to December *** were classified into four groups based on the clinical grading system and treatment:(1)Observation group with score0.05;χ^(2)=1.68,P>0.05).CONCLUSION This clinical grading system appeared as a practical tool for hepatic *** can be suggested for patients with a score≥*** those with<4,follow-up should be proposed.

关键词： Hepatic hemangioma Clinical grading system Surgical indication Outcome Postoperative complications

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Unlocking the potential:advancements and future horizons in ROR1-targeted cancer therapies

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Science China Life Sciences 2024年

作者： Lin Li Weixue Huang Xiaomei Ren Zhen Wang ke Ding Linxiang zhao Jinwei Zhang State key Laboratory of Structure-Based Drugs Design&Discovery of Ministry of Education Shenyang Pharmaceutical University State key Laboratory of Chemical Biology Research Center of Chemical KinomicsShanghai Institute of Organic ChemistryChinese Academy of Sciences

While receptor tyrosine kinase-like orphan receptor 1 (ROR1) is typically expressed at low levels or absent in normal tissues,its expression is notably elevated in various malignant tumors and conditions,including chronic lymphocytic leukemia (CLL),breast cancer,ovarian cancer,melanoma,and lung *** distinctive feature positions ROR1 as an attractive target for tumor-specific ***,several targeted drugs directed at ROR1 are undergoing clinical development,including monoclonal antibodies,antibody-drug conjugates (ADCs),and chimeric antigen receptor T-cell therapy (CAR-T).Additionally,there are four small molecule inhibitors designed to bind to ROR1,presenting promising avenues for the development of PROTAC degraders targeting *** review offers updated insights into ROR1’s structural and functional characteristics,embryonic development implications,cell survival signaling pathways,and evolutionary targeting strategies,all of which have the potential to advance the treatment of malignant tumors.

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