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Quantum uncertainty relations of Tsallis relative α entropy coherence based on MUBs

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Communications in Theoretical Physics 2022年第1期74卷 31-39页

作者： fu-gang Zhang School of Mathematics and Information Science Nanchang Hangkong UniversityNanchang 330063China

In this paper,we discuss quantum uncertainty relations of Tsallis relative α entropy coherence for a single qubit system based on three mutually unbiased *** α∈[1/2,1)U(1,2],the upper and lower bounds of sums of coherence are ***,the above results cannot be verified directly for any α∈(0,1/2).Hence,we only consider the special case of α=1/n+1,where n is a positive integer,and we obtain the upper and lower *** comparing the upper and lower bounds,we find that the upper bound is equal to the lower bound for the special α=1/2,and the differences between the upper and the lower bounds will increase as α ***,we discuss the tendency of the sum of coherence,and find that it has the same tendency with respect to the different θ or φ,which is opposite to the uncertainty relations based on the Rényi entropy and Tsallis entropy.

关键词： quantum uncertainty relation Tsallis relativeαentropy of coherence the upper and lower bounds single qubit state MUB

Structures and Evolutions of Explosive Cyclones over the Northwestern and Northeastern Pacific

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Journal of Ocean University of China 2018年第3期17卷 581-593页

作者： ZHANG Shuqin fu gang Key Laboratory of Physical Oceanography Ocean-Atmosphere Interaction and Climate Laboratory Department of Marine Meteorology Ocean University of China Division of Oceanic Dynamics and Climate Qingdao National Laboratory for Marine Science and Technology

In this study, the structures and evolutions of moderate(MO) explosive cyclones(ECs) over the Northwestern Pacific(NWP) and Northeastern Pacific(NEP) are investigated and compared using composite analysis with cyclone-relative coordinates. Final Operational Global Analysis data gathered during the cold seasons(October–April) of the 15 years from 2000 to 2015 are used. The results indicate that MO NWP ECs have strong baroclinicity and abundant latent heat release at low levels and strong upper-level forcing, which favors explosive cyclogenesis. The rapid development of MO NEP ECs results from their interaction with a northern cyclone and a large middle-level advection of cyclonic vorticity. The structural differences between MO NWP ECs and MO NEP ECs are significant. This results from their specific large-scale atmospheric and oceanic environments. MO NWP ECs usually develop rapidly in the east and southeast of the Japan Islands; the intrusion of cold dry air from the East Asian continent leads to strong baroclinicity, and the Kuroshio/Kuroshio Extension provides abundant latent heat release at low levels. The East Asian subtropical westerly jet stream supplies strong upper-level forcing. While MO NEP ECs mainly occur over the NEP, the low-level baroclinicity, upper-level jet stream, and warm ocean currents are relatively weaker. The merged cyclone associated with a strong middle-level trough transports large cyclonic vorticity to MO NEP ECs, which favors their rapid development.

关键词： northern Pacific explosive cyclones composite analysis structures evolutions

Preparation of c-Axis Oriented LiNb_(1-x) Ta_xO_3 Films on Si(111) Substrates by a Modified Sol-gel Process

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Chemical Research in Chinese Universities 2002年第3期18卷 255-257页

作者： QIANG Liang sheng fu Hong gang Department of Applied Chemistry Harbin Institute of TechnologyHarbin 150001P.R.China School of Chemistry and Engineering Heilongiang UniversityHarbin 150080P.R.China

In this work, we succeeded in the preparation of LiNb 1- x Ta x O 3 films on Si(111) substrates by means of sol gel process, and the usual sol gel process for the preparation of LiNbO 3 and LiTaO 3 films on Si substrates was improved by adding a 33% aqueous solution of CH 3CH 2OH to the mixed sols of LiNb(OCH 2CH 3) 6 and LiTa(OCH 2CH 3) 6 . The crystallization behavior of LiNb 1- x Ta x O 3 films on Si(111) substrates has been studied. Highly c axis oriented LiNb 1- x Ta x O 3 films have been obtained within the tantalum composition range of \{0< x <0 33\}. Some factors such as the hydrogen termination of the silicon surface, the RTP annealing process that provides the unidirectional heat flow and the preheating temperature are discussed to analyze the crystallization of the c axis oriented films.

关键词： LiNb 1- x Ta x O 3 film Crystallization behavior Si substrate Sol gel

Structure of the Potential Vorticity of an Explosive Cyclone over the Eastern Asian Region in Late November 2013

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Journal of Ocean University of China 2022年第2期21卷 253-263页

作者： PANG Huaji fu gang LU Chungu Qingdao Engineering Technology Research Center for Meteorological Disaster Prevention Qingdao Meteorological BureauQingdao 266003China Department of Marine Meteorology Laboratories of Physical OceanographyOcean-Atmosphere Interaction and ClimateOcean University of ChinaQingdao 266100China National Science Foundation ArlingtonVA 22230USA

An explosive extratropical cyclone(EC)over the Eastern Asian region that caused two shipwrecks is analyzed using ERA-Interim reanalysis data from the European Center for Medium-Range Weather *** of the evolution of the EC reveal that the positive potential vorticity(PV)at the upper-tropospheric level displays a hook-shaped structure during the mature period of the *** PV distribution forms a vertically coherent PV structure called a PV *** vertical distribution of the PV can induce and strengthen cyclonic circulation from the lower-to upper-levels of troposphere,which is an important deepening mechanism of explosive *** PV tower occurs approximately ten hours prior to the development of surface occlusion in the *** evolution of surface fronts closely follows the development of the horizontal upper-tropospheric *** tandem development is largely attributed to the ability of the positive upper-tropospheric PV and the PV tower to induce cyclonic circulation *** kinematic wrap-up process of cyclonic circulation also accelerates the formation of warm occlusion.A conceptual model of the distributions of positive PV and potential temperature combining the perspectives of dynamic tropopause folding,PV tower,and atmospheric stability,including westward tilting and baroclinicity,is *** model can illustrate the explosive deepening mechanism of *** regions of convective instability and rainfall determined by this model are consistent with those identified from the actual observation.

关键词： extratropical cyclone rapidly deepening mechanism potential vorticity front evolution coupling of upper-and low-troposphere

The 9–11 November 2013 Explosive Cyclone over the Japan Sea- Okhotsk Sea: Observations and WRF Modeling Analyses

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Journal of Ocean University of China 2020年第5期19卷 989-1004页

作者： fu gang JING Miaomiao LI Pengyuan Department of Marine Meteorology Ocean-Atmosphere Interaction and Climate LaboratoryKey Laboratory of Physical OceanographyOcean University of ChinaQingdao 266100China Division of Oceanic Dynamics and Climate Qingdao National Laboratory for Marine Science and TechnologyQingdao 266100China Qingdao Hatran Ocean Intelligence Technology Company Limited Qingdao 266404China

During the period from 9 to 11 November 2013,an explosive cyclone(EC)occurred over the Japan Sea-Okhotsk *** EC initially formed around 18 UTC 9 November over the Japan Sea and developed over the Okhotsk Sea when moving *** had a minimum sea level pressure of 959.0 hPa,a significant deepening rate of central pressure of 2.9 Bergeron,and a maximum instantaneous wind speed of 42.7 m s−*** paper aims to investigate the conditions that contributed to the rapid development of this low-pressure system through analyses of both observations and the Weather Research Forecasting(WRF)modeling *** evolutionary processes of this EC were examined by using Final Analyses(FNL)data,Multi-functional Transport Satellites-1R(MTSAT-1R)data,upper observation data and surface observation ***-3.5 modeling results were also used to examine the development mechanism of this *** is shown that the interaction between upper-level and low-level potential vorticity seemed to be very essential to the rapid development of this EC.

关键词： explosive cyclone the Japan Sea-Okhotsk Sea observations WRF-3.5 modeling results potential vorticity

An Observational and Modeling Study of Extratropical Transition of Hurricane Sandy in 2012

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Journal of Ocean University of China 2015年第5期14卷 783-794页

作者： fu Dan LI Pengyuan fu gang Department of Meteorology Ocean University of China

Around 30 October 2012, Hurricane Sandy made landfall along the New Jersey shoreline after its completion of extratropical transition and transformation into an extratropical cyclone. The strong gale induced a catastrophic storm surge, and caused 72 death and damage of more than $50 billion. In this paper, the evolutionary process and spatial structure of the Hurricane Sandy during its extratropical transition were investigated by using Weather Research and Forecasting （WRF） version 3.3.1 modeling resuits and National Center for Environmental Prediction （NCEP） Coupled Forecast System model version 2 reanalysis datasets （CFSv2）. It is found that during the upper-level trough interaction on 29 October, Sandy gradually fused with a pre-existing mid-latitude low-pressure system, and finished the re-intensification. WRF modeling results showed that the second peak occurred mainly due to the enhanced vertical motion, reduced vertical wind shear as well as the supplement of potential vorticity resulting from trough interaction over the southeast of Great Lakes. The cold continental air from the back of trough was encircled within the warm core system cyclonically, forming the characteristic of warm seclusion.

关键词： Hurricane Sandy extratropical transition mid latitude trough WRF modeling

Structure Analyses of the Explosive Extratropical Cyclone:A Case Study over the Northwestern Pacific in March 2007

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Journal of Ocean University of China 2017年第6期16卷 933-944页

作者： WANG Shuai fu gang PANG Huaji College of Oceanic and Atmospheric Sciences Ocean University of China Qingdao 266100 P. R. China Department of Physics Imperial College London London SW7 2AZ UK Qingdao Meteorological Bureau Qingdao 266003 P. R. China

The synoptic situation and mesoscale structure of an explosive extratropical cyclone over the Northwestern Pacific in March 2007 are investigated through weather station observations and data reanalysis. The cyclone is located beneath the poleward side of the exit of a 200 hPa jet, which is a strong divergent region aloft. At mid-level, the cyclone lies on the downstream side of a well-developed trough, where a strong ascending motion frequently occurs. Cross-section analyses with weather station data show that the cyclone has a warm and moist core. A ‘nose' of the cold front, which is characterized by a low-level protruding structure in the equivalent potential temperature field, forms when the cyclone moves offshore. This ‘nose' structure is hypothesized to have been caused by the heating effect of the Kuroshio Current. Two low-level jet streams are also identified on the western and eastern sides of the cold front. The western jet conveys cold and dry air at 800–900 hPa. The wind in the northern part is northeasterly, and the wind in the southern part is northwesterly. By contrast, the eastern jet carries warm and moist air into the cyclone system, ascending northward from 900 hPa to 600–700 hPa. The southern part is dominated by the southerly wind, and the wind in the northern part is southwesterly. The eastern and western jets significantly increase the air temperature and moisture contrast in the vicinity of the cold front. This increase could play an important role in improving the rapid cyclogenesis process.

关键词： explosive extratropical cyclone meteorological bomb rapid cyclogenesis mesoscale structure northwestern Pacific

Calcium pyrophosphate deposition disease of the temporomandibular joint invading the middle cranial fossa:Two case reports

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World Journal of Clinical Cases 2021年第11期9卷 2662-2670页

作者： Ting Tang fu-gang Han Department of Radiology The Affiliated Hospital of Southwest Medical UniversityLuzhou 646000Sichuan ProvinceChina

BACKGROUND Pseudogout is a benign joint lesion caused by the deposition of calcium pyrophosphate dihydrate crystals,but it is *** of the temporomandibular joint(TMJ)is uncommon,and it rarely invades the skull base or penetrates into the middle cranial *** disease has no characteristic clinical manifestations and is easily *** SUMMARY We present two cases of tophaceous pseudogout of the TMJ invading the middle cranial fossa.A 46-year-old woman with a history of diabetes for more than 10 years was admitted to the hospital due to swelling and pain in the right temporal *** patient,a 52-year-old man with a mass in the left TMJ for 6 years,was admitted to the *** imaging showed a calcified mass and severe bone destruction of the skull base in the TMJ *** patients underwent excision of the *** lesion was pathologically diagnosed as tophaceous *** symptoms in these patients were relieved after *** Tophaceous pseudogout should be considered when there is a calcified mass in the TMJ with or without bone destruction.A pathological examination is the gold standard for diagnosing this *** treatment is currently the recommended treatment,and the prognosis is good after surgery.

关键词： Tophaceous pseudogout Temporomandibular joint Middle cranial fossa Calcium pyrophosphate deposition disease Case report

Density functional Theory Study on Spin States of LaCoO3 at Room Temperature

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Chinese Journal of Chemical Physics 2014年第3期27卷 274-278页

作者： Xiang-bo Zhang gang fu Hui-lin Wan State Key Laboratory for Physical Chemistry of Solid Surfaces Department of Chemistry College ofChemistry & Chemical Engineering Xiamen University Xiamen 361005 China

The electronic structure of the perovskite LaCoO3 at room temperature structure （293 K） was calculated by using PBE, PBE＋U and HSE. Different spin configurations have been considered. Our calculations showed that the choice of the Hubbard U parameter in DFT＋U and mixing factor α in HSE significantly influenced the band gap as well as relative energies. For the spin exited states, the optimal value for U and α were 3.0 eV and 0.05, respectively. Our calculation also emphasized that when U〉5.0 eV, PBE＋U would lead to unreasonable electronic structure and energy order.

关键词： Perovskite LaCoO3 Density functional theory