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High-magnetic-field induced charge order in high-t_c cuprate superconductors

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Chinese Physics B 2019年第11期28卷 25-42页

作者： L X Zheng J Li t WU Hefei National Laboratory for Physical Science at Microscale University of Science and Technology of ChinaHefei 230026China Key Laboratory of Strongly-coupled Quantum Matter Physics University of Science and Technology of ChinaChinese Academy of SciencesHefei 230026China CAS Center for Excellence in Superconducting Electronics(CENSE) Shanghai 200050China CAS Center for Excellence in Quantum Information and Quantum Physics Hefei 230026China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China

In the last few years, charge order and its entanglement with superconductivity are under hot debate in high-tc community due to the new progress on charge order in high-tc cuprate superconductors YBa2Cu3O6+x. Here, we will briefly introduce the experimental status of this field and mainly focus on the experimental progress of high-field nuclear magnetic resonance(NMR) study on charge order in YBa2Cu3O6+x. the pioneering high-field NMR work in YBa2Cu3O6+x sets a new stage for studying charge order which has become a ubiquitous phenomenon in high-tc cuprate superconductors.

关键词： charge order cuprates nuclear magnetic resonance YBa2Cu3O6+x superconductors competing order

miR-31: a key player in CD8 t-cell exhaustion

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Cellular & Molecular Immunology 2017年第12期14卷 954-956页

作者： Siddheshvar Bhela Barry t Rouse Department of Biomedical and Diagnostic Sciences College of Veterinary MedicineUniversity of TennesseeKnoxvilleKnoxvilleTN 37996USA

Over the past decade,miRNAs have emerged as genetic factors that can influence immune functions.1 they act by post-transcriptionally downregulating gene expression either by degrading target mRNAs or by repressing their translation.2 Linking miRNA expression to disease was first accomplished by comparing outcomes in normal animals with those in miR-155 knockout animals.3 Our group also used a viral pathogen to show that knocking out miR-155 resulted in less severe inflammatory lesions caused by herpes simplex virus infection,yet animals without miR-155 became more susceptible to developing viral encephalitis.

关键词： encephalitis infection simplex

temperature sensitivity of soil organic matter decomposition varies with biochar application and soil type

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Pedosphere 2020年第3期30卷 336-342页

作者： tatiana Frittl Luiza CANISARES Edvaldo SAGRILO Klaus BUttERBACH-BAHL Michael DANNENMANN Carlos EPCERRI Soil Science Department Luiz de Queiroz College of AgricultureUniversity of São PauloPiracicabaSão Paulo 13418-900(Brazil Karlsruhe Institute of technology Institute of Meteorology and Climate ResearchAtmospheric Environmental Research(IMK-IFU)Garmisch-Partenkirchen 82467Germany Brazilian Agricultural Research Corporation(Embrapa Meio-Norte) TeresinaPiauí70770-901Brazil

Biochar application has the potential to improve soil fertility and increase soil carbon stock, especially in tropical regions. Information on the temperature sensitivity of carbon dioxide(CO2) evolution from biochar-amended soils at very high temperatures, as observed for tropical surface soils, is limited but urgently needed for the development of region-specific biochar management targeted to optimize biochar effects on soil functions. Here, we investigated the temperature sensitivity of soil respiration to the addition of different rates of Miscanthus biochar(0, 6.25, 12.5, and 25 Mg ha-1) in two types of soils with contrasting textures. Biochar-amended soil treatments and their controls were incubated at constant temperatures of 20, 30, and 40℃. Overall, our results show that: i) considering data from all treatments and temperatures, the addition of biochar decreased soil CO2 emissions when compared to untreated soils;ii) CO2 emissions from biochar-amended soils had a higher temperature sensitivity than those from biochar-free soils;iii) the temperature sensitivity of soil respiration in sandy soils was higher than that in clay soils;and iv) for clay soils, relative increases in soil CO2 emissions from biochar-amended soils were higher when the temperature increased from 30 to 40℃, while for sandy soils, the highest temperature responses of soil respiration were observed when increasing the temperature from 20 to 30℃. together, these findings suggest a significantly reduced potential to increase soil organic carbon stocks when Miscanthus biochar is applied to tropical soils at high surface temperatures, which could be counteracted by the soil-and weather-specific timing of biochar application.

关键词： carbon dioxide clay soil greenhouse gas emission Miscanthus biochar sandy soil tropical soil

Genomic characterization and molecular dating of the novel bacterium Permianibacter aggregans HW001t,which originated from Permian ground water

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Marine Life Science & technology 2023年第1期5卷 12-27页

作者： Shuangfei Zhang Russell t.Hill Hui Wang Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Biology Department College of Scienceand Guangdong Provincial Key Laboratory of Marine BiotechnologyShantou UniversityShantou 515063China Institute of Marine and Environmental technology University of Maryland Center for Environmental ScienceBaltimoreMD 21201USA

the Permian Basin is a unique ecosystem located in the southwest of the *** unanswered question is whether the bacteria in the Permian Basin adapted to the changing paleomarine environment and survived in the remnants of Permian *** our previous study,a novel bacterial strain,Permianibacter aggregans HW001t,was isolated from micro-algae cultures incubated with Permian Basin waters,and was shown to originate from the Permian *** this study,strain HW001t was shown to be the representative strain of a novel family,classified as‘Permianibacteraceae’.the results of molecular dating suggested that the strain HW001t diverged~447 million years ago(mya),which is the early Permian period(~250 mya).Genome analysis was used to access its potential energy utilization and biosynthesis capacity.A large number of transporters,carbohydrate-active enzymes and protein-degradation related genes have been annotated in the genome of strain *** addition,a series of important metabolic pathways,such as peptidoglycan biosynthesis,osmotic stress response system and multifunctional quorum sensing were annotated,which may confer the ability to adapt to vari-ous unfavorable environmental ***,the evolutionary history of strain HW001t was reconstructed and the horizontal transfer of genes was predicted,indicating that the adaptation of *** to a changing marine environment depends on the evolution of their metabolic capabilities,especially in signal *** conclusion,the results of this study provide genomic information for revealing the adaptive mechanism of strain HW001t to the changing ancient oceans.

关键词： Permian groundwater Molecular dating Genomic adaptation Genes gain and loss

Responses to LPS boost effector CD8 t-cell accumulation ）utside of signals 1 and 2

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Cellular & Molecular Immunology 2017年第3期14卷 254-264页

作者： Wenhai Liu Antoine Menoret Anthony t. Vella Department of Immunology School of Medicine University of Connecticut Health Center Farmington CT 06030 USA

Immunization with adjuvant plus antigen induces durable t-cell immunity and is a mainstay of vaccines. Here, the consequence of separating antigen stimulation of t cells from the adjuvant response was studied in a re-transfer model. Effector CD8 t cells in recipient mice were exposed to lipopolysaccharide （LPS）, the toll-like receptor 4 （tLR4） ligand, which significantly increased persistence. While accumulation in lymphoid and non-lymphoid organs was evident, this result depended upon the timing of LPS administration and the presence of the tLR4 adaptor tRIF in the recipient mice. Interestingly, there was very little impact of the LPS response on subset differentiation, which rather appeared to be programmed by antigen and costimulation. to discern factors that limit accumulation, interleukin 10 （IL-IO） was targeted since it is a product of tLR4 triggering and mitigates inflammation. Blockade of IL-IO increased accumulation even though the effector CD8 t cells were well past the priming phase, but upon recall interferon-y secretion was not affected as would be expected when IL-IO is present during priming. thus, the adjuvant-altered microenvironment is effective not only in the presence of antigen but also during a window of effector CD8 t-cell stasis, suggesting that pathogen-associated molecular pattern molecules released during co-infection, ot by vaccines, could alter the survival fate of specific effector t cells.

关键词： adjuvant costimulation cytokine t cell

Effects of acetic acid on microstructure and electrochemical properties of nano cerium oxide films coated on AA7020-t6 aluminum alloy

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Rare Metals 2009年第1期28卷 98-101页

作者： H. Hasannejad t. Shahrabi M. Aliofkhazraei Materials Engineering Department Faculty of EngineeringTarbiat Modares UniversityTehranIran

Nano cerium oxide films were applied on AA7020-t6 aluminum alloy and the effects of acetic acid concentration on the microstructure and electrochemical properties of the coated samples were investigated by using scanning electron microscopy （SEM）, X-ray diffraction （XRD）, and potentiodynamic polarization methods. It has been found that by increasing the acetic acid/CeCl3·7H2O molar ratio, high uniform and crack-free films with well-developed grains were obtained and grain sizes of the films decreased. Elimination of cracks and decreasing grain size of the nano cerium oxide films caused corrosion resistance to increase.

关键词： nano cerium oxide films acetic acid aluminum alloy electrochemical property microstructure

Leveraging ROtI map derived from Indonesian GNSS receiver network for advancing study of Equatorial Plasma Bubble in Southeast/East Asia

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Earth and Planetary Physics 2025年第1期9卷 101-116页

作者： Prayitno Abadi Ihsan N.Muafiry teguh N.Pratama Angga Y.Putra Suraina Gatot H.Pramono Sidik t.Wibowo Febrylian F.Chabibi Umar A.Ahmad Wildan P.tresna Asnawi Research Center for Climate and Atmosphere Indonesian National Research and Innovation Agency(BRIN)BandungIndonesia School of Electrical Engineering Telkom UniversityBandungIndonesia Directorate of Laboratory Management Facilities and Science and technology Park Indonesian National Research and Innovation Agency(BRIN)PontianakIndonesia Geophysics Laboratory Master Program in PhysicsUniversitas Gadjah Mada(UGM)YogyakartaIndonesia Research Center for Space Indonesian National Research and Innovation Agency(BRIN)BandungIndonesia Indonesian Geospatial Information Agency(BIG) JakartaIndonesia Research Center for Photonics Indonesian National Research and Innovation Agency(BRIN)Tangerang SelatanIndonesia Department of Earth and Planetary Sciences Hokkaido UniversitySapporoJapan

this paper highlights the crucial role of Indonesia’s GNSS receiver network in advancing Equatorial Plasma Bubble(EPB)studies in Southeast and East Asia,as ionospheric irregularities within EPB can disrupt GNSS signals and degrade positioning *** by the Indonesian Geospatial Information Agency(BIG),the Indonesia Continuously Operating Reference Station(Ina-CORS)network comprises over 300 GNSS receivers spanning equatorial to southern low-latitude ***-CORS is uniquely situated to monitor EPB generation,zonal drift,and dissipation across Southeast *** provide a practical tool for EPB research,by sharing two-dimensional rate of total Electron Content(tEC)change index(ROtI)derived from this *** generate ROtI maps with a 10-minute resolution,and samples from May 2024 are publicly available for further scientific *** preliminary findings from the ROtI maps of Ina-CORS are ***,the Ina-CORS ROtI maps reveal that the irregularities within a broader EPB structure persist longer,increasing the potential for these irregularities to migrate farther ***,we demonstrate that combined ROtI maps from Ina-CORS and GNSS receivers in East Asia and Australia can be used to monitor the development of ionospheric irregularities in Southeast and East *** have demonstrated the combined ROtI maps to capture the development of ionospheric irregularities in the Southeast/East Asian sector during the G5 Geomagnetic Storm on May 11,*** observed simultaneous ionospheric irregularities in Japan and Australia,respectively propagating northwestward and southwestward,before midnight,whereas Southeast Asia’s equatorial and low-latitude regions exhibited irregularities *** sharing ROtI maps from Indonesia and integrating them with regional GNSS networks,researchers can conduct comprehensive EPB studies,enhancing the understanding of EPB behavior across Southeast and East Asia and contributing significantly to ionosphe

关键词： Equatorial Plasma Bubble(EPB) GNSS receivers’network Indonesia Continuously Operating Reference Station(Ina-CORS) ionospheric map Rate of tEC change index(ROtI)map

Energy exchange between charged relativistic fluids in f(t)gravity

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Communications in theoretical Physics 2024年第10期76卷 106-118页

作者： Z Yousaf U A Khokhar Nasser Bin turki t Suzuki Department of Mathematics University of the PunjabQuaid-i-Azam CampusLahore-54590Pakistan Department of Mathematics College of ScienceKing Saud UniversityPO Box 2455Riyadh11451Saudi Arabia Department of Regional Management Faculty of ManagementFukushima CollegeFukushima 960-0181Japan

this study focuses on the effects of a polytropic fluid on a charged gravitational source within f(t)gravity,where t is the torsion *** investigate how the electromagnetic field affects the flow of energy in spherically symmetric and static celestial objects that contain relativistic *** using the gravitational decoupling technique,we analyze the effects of polytropic fluid on the dynamics of the gravitational source,accompanied by the matching of the interior geometry with an exterior at the hypersurfaceΣ.Finally,with the help of the tolmanⅡV solution,we observe the conduct of energy conditions with the existence of charge using f(t)field equations and got the intended outcomes.

关键词： complexity hydrodynamics anisotropy self-gravitating systems energy exchange

Chaotic movement of vortices in superconductors of high-t_c superconducting maglev system at a high speed

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Journal of Modern transportation 2012年第2期20卷 70-75页

作者： H.t. LIN Department of Information Management Department of Electrical Engineering Cheng Shiu University Taiwan China

Vortex motion in superconductors of high-to superconducting maglev system is studied by a computational simulation. the vortex system is treated in a similar fashion, as a system where defects are arranged in periodic arrays and driven by an alternating current （AC） field. Computational simulation reveals that due to the high nonlinearity of the vortex-defect interaction, the system shows typical chaotic characters. Effects of the vortex-vortex coupling, the driving frequency, and the vortex viscosity on the vortex motion have been studied to reveal the interaction between the spatial and temporal chaos. It is found that the mean-field approach is a good approximation to describe the vortex motion in one dimensional vortex system under an AC driving field. the vortex motion under the damping mode is a kind of self-organized motion. Lastly, the spatial chaos can dominate the chaotic behavior of the system.

关键词： superconductors vortex motion spatial chaos temporal chaos