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Infantile bacterial meningitis combined with sepsis caused by Streptococcus gallolyticus subspecies pasteurianus:A case report

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World Journal of Clinical Cases 2024年第31期12卷 6472-6478页

作者： Dan Zou Fen li shu-li jiao Jin-Rong Dong Yao-Yao Xiao Xiao-ling Yan Yan li Dan Ren Department of Pediatrics Mianyang Central HospitalSchool of MedicineUniversity of Electronic Science and Technology of ChinaMianyang 621000Sichuan ProvinceChina Department of Clinical Laboratory Mianyang Central HospitalSchool of MedicineUniversity of Electronic Science and Technology of ChinaMianyang 621000Sichuan ProvinceChina

BACKGROUND Streptococcus gallolyticus subspecies pasteurianus(SGSP)is a rare pathogen responsible for infant sepsis and meningitis and is potentially overlooked because it is not included in routine group B streptococcal ***,we present a case of SGSP-induced infant meningitis and sepsis,accompanied by bronchopneumonia induced by multidrug-resistant Staphylococcus aureus(MRSA),providing insights into the identification,management,and prognosis of this bacterial *** SUMMARY A 45-day-old female infant presented with two episodes of high fever(maximum temperature:39.5°C)and two generalized grand mal seizure episodes that lasted over ten seconds and self-resolved without concomitant ***,the patient’s C-reactive protein level was 40.73 mg/L,white blood cell count was 13.42×10^(9)/L,neutrophil ratio was 78.4%,procalcitonin level was 7.89μg/L,cerebrospinal fluid(CSF)white cell count was 36×10^(6)/L,multinucleated cell ratio was 95.2%,and protein concentration was 0.41 g/*** and CSF culture revealed that the pathogen was *** bacterium was sensitive to ampicillin,furazolidone,penicillin,lincomycin,moxifloxacin,rifampicin,vancomycin,and levofloxacin but resistant to clindamycin and *** culture revealed the presence of MRSA,which was sensitive to *** patient was diagnosed with meningitis and sepsis caused by SGSP,accompanied by bronchopneumonia induced by ***(100 mg/kg/d)combined with vancomycin(10 mg/kg/dose,q6h)was given as an anti-infective treatment *** 12 days of treatment,the infant was discharged from the hospital with normal CSF,blood culture,and routine blood test results,and no complications,such as subdural effusion,were observed on cranial computed *** growth retardation or neurological sequelae occurred during *** SGPSP-induced infant bacterial meningitis and sepsis should be treated with prompt blood and CSF cultures,and a sensitiv

关键词： Streptococcus gallolyticus subspecies pasteurianus Rare pathogen Bacterial meningitis Sepsis Multidrugresistant Staphylococcus aureus Bronchopneumonia Infant Case report

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基于UPLC-ABTS-Q-TOF-MS的艾草不同部位抗氧化活性成分比较研究

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中国中药杂志 2024年第9期49卷 2468-2477页

作者：王苗苗王宇卿李淑娇庄果杨媛媛河南大学药学院河南开封475004 南阳医学高等专科学校河南省中药效应物质与质量控制研究中医药重点实验室南阳道地药材(艾草)研究院河南南阳473061

为了对中药艾Artemisia argyi不同部位(根、茎、叶、籽)中化学成分进行表征与鉴定,筛选具有抗氧化活性的化合物,该研究采用超高效液相色谱-2,2′-联氨-双(3-乙基苯并噻唑啉-6-磺酸)二胺盐-串联四极杆飞行时间质谱(UPLC-ABTS-Q-TOF-MS)... 详细信息

为了对中药艾Artemisia argyi不同部位(根、茎、叶、籽)中化学成分进行表征与鉴定,筛选具有抗氧化活性的化合物,该研究采用超高效液相色谱-2,2′-联氨-双(3-乙基苯并噻唑啉-6-磺酸)二胺盐-串联四极杆飞行时间质谱(UPLC-ABTS-Q-TOF-MS)在线联用技术,以Poroshell 120 SB-Aq(3.0 mm×150 mm,2.7μm)为色谱柱,乙腈(A)-0.2%的甲酸水(B)为流动相,进行梯度洗脱,在正、负离子模式下分别扫描,运用MassLynx软件,结合对照品及相关文献,对艾草不同部位进行化学成分鉴定并比较不同部位化学成分的差异,采用抗氧化活性成分在线检测体系,对抗氧化活性成分进行检测,并以清除效率为指标对艾草不同部位活性成分的抗氧化活性进行比较评价。结果从艾草不同部位提取物中共鉴定出87个化合物,根、茎、叶、籽分别鉴定出38、72、85、33个成分;共筛选出具有22个抗氧化活性的化合物,根、茎、叶、籽分别鉴定出14、17、20、11个具有抗氧化活性的化合物。研究表明艾草不同部位化学成分和抗氧化成分均存在一定差异,为艾草的资源利用和进一步研究开发提供数据支持。

关键词：艾草在线筛选抗氧化活性 UPLC-ABTS-Q-TOF-MS 2,2′-联氨-双(3-乙基苯并噻唑啉-6-磺酸)二胺盐

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Semi-regularized Hermitian and Skew-Hermitian Splitting Preconditioning for Saddle-Point linear Systems

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Communications on Applied Mathematics and Computation 2023年第4期5卷 1422-1445页

作者： Kang-Ya Lu shu-jiao li School of Applied Science Beijing Information Science and Technology UniversityBeijing100192China

In this paper,a two-step semi-regularized Hermitian and skew-Hermitian splitting(SHSS)iteration method is constructed by introducing a regularization matrix in the(1,1)-block of the first iteration step,to solve the saddle-point linear *** carefully selecting two different regularization matrices,two kinds of SHSS preconditioners are proposed to accelerate the convergence rates of the Krylov subspace iteration *** analysis about the eigenvalue distribution demonstrates that the proposed SHSS preconditioners can make the eigenvalues of the corresponding preconditioned matrices be clustered around 1 and uniformly bounded away from *** eigenvector distribution and the upper bound on the degree of the minimal polynomial of the SHSS-preconditioned matrices indicate that the SHSS-preconditioned Krylov subspace iterative methods can converge to the true solution within finite steps in exact *** addition,the numerical example derived from the optimal control problem shows that the SHSS preconditioners can significantly improve the convergence speeds of the Krylov subspace iteration methods,and their convergence rates are independent of the discrete mesh size.

关键词： Hermitian and skew-Hermitian splitting(HSS) Eigenvalues Eigenvectors Preconditioner Saddle-point linear system

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艾草R2R3-MYB转录因子家族成员的鉴定及表达分析

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中国中药杂志 2024年第16期49卷 4407-4419页

作者：崔占虎李淑娇满永宏李明杰古力张重义李孟芝黄显章王宇卿南阳医学高等专科学校、河南省中药效应物质与质量控制研究中医药重点实验室、南阳道地药材(艾草)研究院河南南阳473061 福建农林大学福建福州350002 南阳理工学院、河南省张仲景方药与免疫调节重点实验室河南南阳473004

MYB(v-myb avian myeloblastosis viral oncogene homolog)家族转录因子是高等植物转录因子中数目最多的一类基因家族成员,可分为4个亚家族,其中R2R3-MYB是最常见的亚家族类型。R2R3-MYB类转录因子广泛参与植物的器官发育和次生代谢产... 详细信息

MYB(v-myb avian myeloblastosis viral oncogene homolog)家族转录因子是高等植物转录因子中数目最多的一类基因家族成员,可分为4个亚家族,其中R2R3-MYB是最常见的亚家族类型。R2R3-MYB类转录因子广泛参与植物的器官发育和次生代谢产物生物合成的调控。为研究R2R3-MYB家族转录因子在艾叶黄酮合成和腺毛发育中发挥的作用,该研究基于艾的全基因组数据筛选、鉴定出92个R2R3-MYB转录因子,并利用生物信息学预测其潜在功能。结果表明,92个转录因子的氨基酸长度为168~547 aa,相对分子质量为19.6~60.5 kDa,均为亲水性蛋白。亚细胞定位分析表明,89个AaMYB蛋白定位结果为细胞核,3个蛋白同时定位于细胞核和细胞质中。依据拟南芥R2R3-MYB家族分类,92个艾R2R3-MYB蛋白分为26个亚家族,同一亚族基因结构基本类似。顺式作用元件预测结果表明光响应元件、茉莉酸甲酯元件和脱落酸元件在R2R3-MYB基因启动子区域分布广泛。转录组表达分析结果显示,AaMYB60、AaMYB63和AaMYB86在叶片中的表达均高于茎和根中的表达,说明这3个转录因子主要在叶片中发挥作用。此外,利用系统进化分析筛选出5个参与艾叶黄酮生物合成或腺毛发育的候选R2R3-MYB转录因子。该研究可为后期艾的优良品种选育和种质创新等提供重要的基因资源。

关键词：艾 R2R3-MYB转录因子基因组生物信息学系统进化

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Aero-Hydro-Elastic-Servo Modeling and Dynamic Response Analysis of A Monopile Offshore Wind Turbine Under Different Operating Scenarios

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China Ocean Engineering 2024年第3期38卷 379-393页

作者： XIE shuang-yi GAO Jian li Yong-ran JIANG shu-xin ZHANG Cheng-lin HE jiao College of Mechanical Engineering Chongqing University of TechnologyChongqing 400044China Beijing Institute of Precision Mechatronics and Controls Beijing 100076China College of Mechanical and Vehicle Engineering Chongqing UniversityChongqing 400044China Fishery Machinery and Instrument Research Institute Chinese Academy of Fishery SciencesShanghai 200092China School of Mechanical and Power Engineering Chongqing University of Science&TechnologyChongqing 401331China

This paper constructs a coupled aero-hydro-elastic-servo simulation framework for a monopile offshore wind turbine(OWT).In this framework,a detailed multi-body dynamics model of the monopile OWT including the gearbox,blades,tower and other components(nacelle,hub,bedplate,etc.)has been explicitly *** effects of pile−soil interaction,controller and operational conditions on the turbine dynamic responses are studied systematically in time domain and frequency *** results show that(1)a comprehensive drivetrain model has the capability to provide a more precise representation of the complex dynamic characteristics exhibited by drivetrain components,which can be used as the basis for further study on the dynamic characteristics of the drivetrain.(2)The pile−soil interaction can influence the wind turbine dynamic responses,particularly under the parked condition.(3)The effect of the pile−soil interaction on tower responses is more significant than that on blade responses.(4)The use of the controller can substantially affect the rotor characteristics,which in turn influences the turbine dynamic responses.(5)The tower and blade displacements under the operational condition are much larger than those under the parked *** model and methodology presented in this study demonstrate potential for examining complex dynamic behaviors of the monopile *** ensure accuracy and precision,it is imperative to construct a detailed model of the wind turbine system,while also taking into account simulation efficiency.

关键词： offshore wind turbine(OWT) pile−soil interaction dynamic response parked condition operating condition

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Electrodeposition of rare refractory metals in low-temperature ionic liquids

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Rare Metals 2024年第10期43卷 4921-4933页

作者： lin-lin Wang Han-Dong jiao Rui Yuan Le-Yang li Man-Peng lin Rui-Yang Sun Jiu-San Xiao shu-Qiang jiao Institute of Advanced Structure Technology Beijing Institute of Technology State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing

Rare refractory metals(RRMs) play a significant role in fundamental industries, including electronics,chemical industry, machinery, etc., and future advanced fields, such as aerospace and superconductivity. However,the traditional production processes of RRMs based on high-temperature thermal reduction cannot meet the requirements of low-energy consumption. This dilemma could be addressed efficiently by using a low-temperature electrodeposition strategy in ionic liquids(ILs). This review summarizes a panoramic view of the latest developments on the electrodeposition of RRMs in ILs after a brief review on the current industrial production methods of RRMs. Based on this, the electrochemical mechanism occurring at the cathode during the electrodeposition process of RRMs in different electrolytes and under different conditions is thoroughly discussed, because it is crucial for the successful production of pure RRMs. In addition, this review not only analyses the main challenges that hinder the industrial application of the electrodeposition of RRMs in ILs, but also proposes corresponding solutions. We hope this review can provide a valuable guidance for the fundamental research and industrial development of lowtemperature electrodeposition of RRMs.

关键词： Chemical industry

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Paroxysmal Kinesigenic Dyskinesia:Genetics and Pathophysiological Mechanisms

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Neuroscience Bulletin 2024年第7期40卷 952-962页

作者： jiao-jiao Xu Hong-Fu li Zhi-Ying Wu Department of Medical Genetics and Center for Rare Diseases The Second Affiliated HospitalZhejiang University School of MedicineHangzhou 310009China Department of Neurology in the Second Affiliated Hospital Key Laboratory of Medical Neurobiology of Zhejiang ProvinceZhejiang University School of MedicineHangzhou 310009China

Paroxysmal kinesigenic dyskinesia(PKD),the most common type of paroxysmal movement disorder,is characterized by sudden and brief attacks of choreoathetosis or dystonia triggered by sudden voluntary *** is mainly caused by mutations in the PRRT2 or TMEM151A *** exact pathophysiological mechanisms of PKD remain unclear,although the function of PRRT2 protein has been well characterized in the last *** on abnormal ion channels and disturbed synaptic transmission in the absence of PRRT2,PKD may be channelopathy or synaptopathy,or *** addition,the cerebellum is regarded as the key pathogenic *** depolarization in the cerebellum is tightly associated with dyskinetic ***,in PKD,other than the cerebellum,the role of the cerebrum including the cortex and thalamus needs to be further investigated.

关键词： Paroxysmal kinesigenic dyskinesia PRRT2 TMEM151A Genetics Pathophysiological mechanisms

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A Possible γ-Ray Pulsation from PSR J1740-5340B in the Globular Cluster NGC 6397

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Research in Astronomy and Astrophysics 2024年第1期24卷 285-291页

作者： jiao Zheng Pengfei Zhang li Zhang Department of Astronomy School of Physics and AstronomyKey Laboratory of Astroparticle Physics of Yunnan ProvinceYunnan UniversityKunming 650091China

Recently, a new radio millisecond pulsar(MSP) J1740-5340B, hosted in the globular cluster(GC) NGC 6397,was reported with a 5.78 ms spin period in an eclipsing binary system with a 1.97 days orbital period. Based on a modified radio ephemeris updated by tool tempo2, we analyze the ~15 yr γ-ray data obtained from the Large Area Telescope on board the Fermi Gamma-ray Space Telescope and detect PSR J1740-5340B's γ-ray pulsation at a confidence level of ~4σ with a weighted H-test value of ~26. By performing a phase-resolved analysis, the γ-ray luminosity in on-pulse interval of PSR J1740-5340B is L_(γ)~ 3.8 × 10^(33) erg s^(-1) using NGC 6397's distance of 2.48 kpc. And γ-rays from the on-pulse part of PSR J1740-5340B contribute ~90% of the total observed γ-ray emissions from NGC 6397. No significant γ-ray pulsation of another MSP J1740-5340A in the GC is *** that the previous four cases of MSPs in GCs, more data in γ-ray, X-ray, and radio are encouraged to finally confirm the γ-ray emissions from MSP J1740-5340B, especially starving for a precise ephemeris.

关键词： gamma-rays:galaxies (stars:)pulsars:individual(PSR J1740-5340B) (Galaxy:)globular clusters:individual(NGC 6397)

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Quaternary Activity Characteristics and Regional Tectonic Significance of the Jiulong Fault in Jiujiang,Jiangxi Province,China

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Journal of Earth Science 2024年第4期35卷 1107-1117页

作者： Xin Qi Yuyong jiao Qinghua li Bin li Faculty of Engineering China University of GeosciencesWuhan430074China Wuhan Center China Geological SurveyWuhan430205China Institute of Geological Survey China University of GeosciencesWuhan430074China

Obtaining geological and landform dislocation features,as well as the measured stratigraphic activity age,provides direct evidence to evaluate fault activity,which is more difficult to do in areas with low tectonic activity,such as eastern and central China.A detailed investigation of the fault activity,trenching,drilling joint geological profile,geological survey,and chronological analysis were used to obtain the spatial geometry,fault kinematics,and activity chronology of the Jiulong *** conclusions are as follows:(1)The Jiulong fault was a fracture zone composed of four branch faults,with a width of around 30–40 m and good extendibility,while the maximum surface rupture length was 373 m.(2)The Jiulong fault has many strata dislocations,and the dislocation distance decreased from bottom to top,demonstrating synsedimentary structure characteristics,with a maximum stratigraphic dislocation distance of 18.2 m.(3)Preliminary analysis suggested the Jiulong fault as a secondary fracture of the Xiangfan-Guangji fault zone and provided evidence of the southeastward extension of the Xiangfan-Guangji fault.A preliminary hypothesis purported the Xiangfan-Guangji fault as the seismogenic fault of the Ms 5.0 magnitude earthquake in 1911.(4)According to OSL and ESR dating analyses,the upper breakpoint of the Jiulong fault cuts into the Late Pleistocene Xingang Formation(Qp3x)strata,and the latest active age of the Jiulong fault was 57.6 *** chronology analysis confirmed an active fault from the Late Pleistocene and identified a weak tectonic in Jiujiang Province,which represents the largest active fault outcrop uncovered in the area so *** study provides evidence and research materials for the evaluation of fault activity and seismic stability in this region.

关键词： active fault regional tectonic earthquakes seismic intensity tectonics

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Detection of Increasingγ-Ray Emissions from 4FGL J1718.5+4237 with Fermi-LAT

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Research in Astronomy and Astrophysics 2024年第8期24卷 169-174页

作者： jiao Zheng Pengfei Zhang li Zhang Department of Astronomy School of Physics and AstronomyKey Laboratory of Astroparticle Physics of Yunnan ProvinceYunnan UniversityKunming 650091China School of Physics and Engineering Technology Xingyi Normal University for NationalitiesXingyi 562400China

We report a gradual brighteningγ-ray source,4FGL J1718.5+4237,in 0.1-500.0 GeV,which may be associated with a blazar NVSS J171822+423948 with a redshift of~*** analyzed 15.25 yr ofγ-ray data recorded by the Large Area Telescope on board the Fermi Gamma-ray Space Telescope and detected significantγ-ray emissions in the direction of the blazar with a test statistic(TS)of~*** on timing analysis using a 1 yr time bin,we have observed a gradual brightening inγ-ray emissions from the *** our analysis,we categorize them into two states:Quiet(TS~0)and Loud(TS~226)states,with the distinction occurring in 2016 August(MJD57602.69).From the Quiet state to the brightest period(the last data point),theγ-ray flux in 0.1-500.0 GeV increased by more than 12-fold from<0.2×10^(-8)photons cm^(-1)s^(-1)to 2.6×10^(-8)photons cm^(-1)s^(-1).Additionally,we studied the spectral properties in detail for the Loud state and the overall *** no significant variation was detected,both exhibited a spectral indexΓof~*** origin of the brighteningγ-ray emissions from the target is not yet *** long-term multi-wavelength observations and studies will provide insight into the astrophysical mechanisms of the target.

关键词： galaxies active-blazars individual(4FGL J1718.5+4237)

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