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Further investigation on the fusion of ^(6)Li with ^(209)bi target at near-barrier energies

Chinese Physics C 2024年第7期48卷 106-117页

作者：张高龙焦振威张广鑫 M.r.Cortes 胡世鹏钱建强 D.Mengoni 屈卫卫李聪博郑云张焕乔孙慧斌王楠张春雷 J.J.Valiente-Dobón D.Testov M.Mazzocco A.Gozzelino C.Parascandolo D.Pierroutsakou M.La Commara A.Goasduff D.bazzacco D.r.Napoli F.Galtarossa F.recchia A.Illana s.bakes I.Zanon s.Aydin G.de Angelis M.siciliano r.Menegazzo s.M.Lenzi J.L.Ferreira J.rangel serkan Akkoyun L.F.Canto J.Lubian school of Physics Beihang UniversityBeijing 100191China sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China Instituto de Física Universidade Federal Fluminense24210-340NiteróiRio de JaneiroBrazil Institute for Advanced study in Nuclear Energy&safety Shenzhen UniversityShenzhen 518060China shenzhen Key Laboratory of research and Manufacture of High Purity Germanium Materials and Fetectors Shenzhen UniversityShenzhen 518060China INFN Sezione di PadovaPadovaItaly Dipartimento di fisica Astronomia dell'Universita di padova PadovaItaly state Key Laboratory of radiation Medicine and Protection School of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China China Institute of Atomic Energy Beijing 102413China The Key Laboratory of beam Technology and Material Modification of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China INFN Laboratori Nazionali di LegnaroI-35020 LegnaroItaly INFN Sezione di NapoliI-80126 NapoliItaly Dipartimento di Farmacia Universitàdi Napoli"Federico II"I-80131 NapoliItaly Department of Natural and Mathematical sciences Faculty of EngineeringTarsus University33480 MersinTurkiye Physics Division Argonne National LaboratoryLemont-ILUSA Departamento de Matemaética Física e Computaç˜ao Universidade do Estado do Rio de JaneiroFaculdade de Tecnologia27537-000ResendeRio de JaneiroBrazil Department of Physics Sivas Cumhuriyet UniversitySivasTurkey Instituto de Física Universidade Federal do Rio de JaneiroCP 6852821941-972Rio de JaneiroBrazil

The complete and incomplete fusion cross sections for ^(6)Li+^(209)bi were measured using the in-beamγ-ray method around the Coulomb *** cross sections of(deuteron captured)incomplete fusion(ICF)products were re-quantified experimentally for this reaction *** results reveal that the ICF cross section is equivalent to that of complete fusion(CF)above the Coulomb barrier and dominant near or below the Coulomb barrier.A theoretical calculation based on the continuum discretized coupled channel(CDCC)method was performed for the aforementioned CF and ICF cross sections;the result is consistent with the *** universal fusion function(UFF)was also compared with the measured CF cross section for different barrier parameters,demonstrating that the CF suppression factor is significantly influenced by the choice of potential,which can reflect both dynamic and static effects of breakup on the fusion process.

关键词： cross section incomplete fusion suppression factor weakly bound nuclei

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基于UHPLC-q-TOF-Ms/Ms技术的百蕊颗粒入血成分研究

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天然产物研究与开发 2024年第2期36卷 243-251页

作者：周思倩方艳谭金桃王雅静吴娟邵乐龙红萍湖南中医药大学第一附属医院湖南省儿童医院药学部长沙410007 湖南中医药大学长沙410208

采用超高效液相色谱-四极杆飞行时间质谱(UHPLC-q-TOF-Ms/Ms)技术辨析百蕊颗粒灌胃大鼠后的原型成分和代谢产物,并研究其主要体内代谢过程。大鼠口服给药百蕊颗粒后,采用UHPLC-q-TOF-Ms/Ms技术采集血清样本数据,正、负离子模式下同时扫... 详细信息

采用超高效液相色谱-四极杆飞行时间质谱(UHPLC-q-TOF-Ms/Ms)技术辨析百蕊颗粒灌胃大鼠后的原型成分和代谢产物,并研究其主要体内代谢过程。大鼠口服给药百蕊颗粒后,采用UHPLC-q-TOF-Ms/Ms技术采集血清样本数据,正、负离子模式下同时扫描,结合前期体外化学成分质谱数据以及提取各化学成分的精确质荷比等信息对百蕊颗粒在大鼠体内的原型成分和代谢产物进行辨识研究。结果在大鼠体内中共检测到20个原型成分和10个代谢产物,其中原型成分包括生物碱类化合物6个,黄酮类化合物4个,有机酸类3个等其他化合物,主要代谢途径包括还原反应和水解反应、硫酸化反应和葡萄糖醛酸结合反应。该研究为揭示百蕊颗粒药效物质基础奠定了基础,也为其中成药的开发与利用提供应用价值。

关键词：百蕊颗粒 UHPLC-q-TOF-Ms/Ms 入血成分代谢产物代谢过程

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青藏高原冰尘微生物对有机质的潜在转化过程

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中国科学：地球科学 2024年第6期54卷 2008-2019页

作者：郭泌汐刘勇勤钟旭史权何晨郑强蔡阮鸿青藏高原地球系统与资源环境重点实验室中国科学院青藏高原研究所北京100101 兰州大学泛第三极环境中心兰州730000 Department of Earth Oceanand Atmospheric SciencesUniversity of British ColumbiaVancouverBC V6T 1Z4Canada 中国石油大学重质油国家重点实验室北京102249 厦门大学近海海洋环境科学国家重点实验室厦门361102 厦门大学福建省海洋碳汇重点实验室厦门361005

微生物在冰川碳循环中发挥着重要作用,然而当前缺乏对冰尘微生物参与的溶解性有机质(DOM)转化过程的深入研究.本研究利用了分析化学和微生物生态学的主流手段——超高分辨率的傅里叶变换离子回旋共振质谱(FT-ICr Ms)和微生物16s rrNA测... 详细信息

微生物在冰川碳循环中发挥着重要作用,然而当前缺乏对冰尘微生物参与的溶解性有机质(DOM)转化过程的深入研究.本研究利用了分析化学和微生物生态学的主流手段——超高分辨率的傅里叶变换离子回旋共振质谱(FT-ICr Ms)和微生物16s rrNA测序技术,分别解析了培养实验中青藏高原龙匣宰陇巴冰川冰尘的DOM分子组成以及微生物群落,并耦联两者构建了复杂微生物参与的冰川DOM转化过程.研究结果表明:在60天的培养实验中,冰尘DOM的生物可利用性随着培养时间的增加而降低,微生物对DOM组分的转化过程可分为三个阶段.在前7天里,微生物选择性降解了具有较高H/Cwa和较低O/Cwa的DOM分子,且群落变化不大;在第15至30天期间,DOM组分保持稳定,但微生物多样性增加;到培养末期, DOM分子在微生物作用下转化为难降解的惰性DOM组分,这些惰性DOM具有更高的芳香指数和O/Cwa、更低的H/Cwa以及含有更多的杂原子.此外,培养实验揭示了冰尘中Cyanobacteria、bacteroidota、Gammaproteobacteria、Firmicutes和Actinobacteriota等类群协同作用于DOM组分转化,使其变得惰性.本研究揭示了冰尘中微生物转化DOM组分的过程,为理解微生物在冰川有机碳循环中的作用提供了新见解.

关键词：冰尘溶解性有机质微生物降解微生物群落时间变化

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Photolysis of mono- through deca-chlorinated biphenyls by ultraviolet irradiation in n-hexane and quantitative structure-property relationship analysis

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Journal of Environmental sciences 2008年第6期20卷 753-759页

作者： LI xue fang Lei HUANG Jun yU Gang POPs research Centre Department of Environmental Science and Engineering Tsinghua University Beijing 100084 China

The photolysis of 16 polychlorinated biphenyls （PCbs）（including mono- through deca-chlorinated） in n-hexane was investigated under ultraviolet irradiation using a 500-w high-pressure mercury lamp. Photolysis of PCbs follows pseudo-first-order reaction kinetics, with photolysis rate constants ranging between 0.0011 s^-1 for PCb-52 and 0.0574 s^-1 for PCb-118. The degradation rates of PCbs by high-pressure mercury lamp irradiation were remarkably independent with respect to the degree of chlorination. Furthermore, partial least squares （PLs） models were developed to provide insight into which aspect of the molecular structure influenced PCb photolysis rate constants. It was found that the photolysis rates of PCbs increased with an increase in the net charge on the carbon atom （qc）, （ELUMO-EHOMO）^2, and the y-axis dipole moment （μy） values, or the decrease in the energy of the second highest occupied molecular orbital （EHOMO-1）, energy of the lowest unoccupied molecular orbital （ELUMO）, ELUMO ＋ EHOMO, ELUMO - EHOMO, most positive atomic charge （q^＋）, and the twist angle of the chlorine atom （TA） values.

关键词： Photolysis polychlorinated biphenyls n-hexane partial least squares quantum chemical descriptors

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strong decays of the low-lying bottom strange baryons

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science China(Physics,Mechanics & Astronomy) 2021年第6期64卷 51-57页

作者： Hui-Zhen He wei Liang qi-fang Lü yu-bing Dong Department of Physics Hunan Normal UniversityChangsha 410081China synergetic Innovation Center for quantum Effects and Applications(sICqEA) Changsha 410081China Key Laboratory of Low-Dimensional quantum structures and quantum Control of Ministry of Education Changsha 410081China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Theoretical Physics Center for science Facilities(TPCsF) Chinese Academy of SciencesBeijing 100049China school of Physical sciences University of Chinese Academy of SciencesBeijing 101408China

In this work,the strong decay behaviors of theλ-mode low-lyingΞ_(b) andΞ^(’)_(b) baryons are investigated within the 3 P0 *** results suggest that all of the low-lying 3F statesΞ_(b)(2 s),Ξ_(b)(1 P),andΞ_(b)(1 D)have small decay widths of less than 20 MeV,and these states have good potentials to be observed in theΞ^(’)_(b)πandΞ^(’)_(b)^(*)πinvariant ***,most of the 6F multiplets are relatively narrow and may decay into theΞ_(b)π,Ξ^(’)_(b)π,Ξ^(’)_(b)^(^(*))π,andΔbK final *** the masses and strong decay behaviors,we can assign the newly observedΞ_(b)(6100)resonance as theΞ_(b)(1 P)state with J^(P)=3/2-and interpret theΞ_(b)(6227)structure as the J^(P)=3/2-Ξ^(’)_(b)(1 P)state with a proper mixing *** expect that our predictions for these excited bottom strange baryons will provide helpful information for future experimental research.

关键词： bottom strange baryons strong decays ^(3)P0 model

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基于状态空间模型的激光再制造熔池温度控制系统

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表面工程与再制造 2024年第2期24卷 50-50页

作者： yang G.-Z. Liu T.-M. song b.-x. Jiang x.-y. wang Z.-s. Chen K.-q. Liu w.-J. school of Mechanical Engineering Shenyang University of Technology Shenyang China

激光再制造是用于再制造的一项重要技术,在航空航天、冶金、能源等领域应用广泛。然而,形状控制问题一直是制约其规模化和工业化应用的瓶颈。在激光再制造过程中,熔池温度是决定再制造件形状和性能稳定性的关键。基于此,本文提出了一种... 详细信息

激光再制造是用于再制造的一项重要技术,在航空航天、冶金、能源等领域应用广泛。然而,形状控制问题一直是制约其规模化和工业化应用的瓶颈。在激光再制造过程中,熔池温度是决定再制造件形状和性能稳定性的关键。基于此,本文提出了一种基于状态空间模型的激光再制造熔池温度实时在线控制方法,解决了控制机理模型难以建立和多变量约束的问题。

关键词：状态空间模型激光再制造熔池温度航空航天形状控制控制系统变量约束性能稳定性

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Modified astrophysical s-factor of 12C+12C fusion reaction at sub-barrier energies

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Chinese Physics C 2020年第11期44卷 189-207页

作者： y.J.Li x.fang b.bucher K.A.Li L.H.ru x.D.Tang China Institute of Atomic Energy Beijing 102413China sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China Idaho National Laboratory Idaho FallsID 83415USA Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China school of Nuclear science and Technology University of Chinese Academy of SciencesBeijing 100049China

The 12C+12C fusion reaction plays a crucial role in stellar evolution and *** main open reaction channels includeα,p,n,and *** more than a half century of efforts,large differences remain among the experimental data of this reaction measured using various *** this work,we analyze the existing data using a statistical *** calculation shows the following:1)the relative systematic uncertainties of the predicted branching ratios decrease as the predicted ratios increase;2)the total modified astrophysical s-factors(s^* factors)of the p andαchannels can be obtained by summing the s^* factors of their corresponding ground-state transitions and the characteristicγrays,while taking into account the contributions of the missing channels to the *** applying corrections based on branching ratios predicted by the statistical model,an agreement is achieved among the different data sets at Ecm>4 MeV,while some discrepancies remain at lower energies,suggesting the need for better measurements in the near *** find that the s^* factor recently obtained from an indirect measurement is inconsistent with the direct measurement value at energies below 2.6 *** recommend upper and lower limits for the 12C+12C s^* factor based on the existing models.A new 12C+12C reaction rate is also recommended.

关键词： carbon burning 12C+12C fusion statistical model quasi-molecular resonance astrophysical s-factor reaction rate stellar evolution

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sOx5对大鼠成骨细胞增殖及核因子-κb信号通路的影响

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蚌埠医学院学报 2024年第2期49卷 146-151页

作者：冷冬月李旭峰方兴刚湖北省十堰市太和医院中西医结合科 442000 湖北省十堰市人民医院中医科 442000

目的:探究y-box蛋白5(sOx5)对大鼠成骨细胞(Ob)增殖及核因子-κb(NF-κb)信号通路的影响。方法:取新生24 h sPF级sD乳鼠,应用酶消化法分离大鼠颅骨Ob。形态学观察和ALP染色鉴定成骨细胞;取生长良好的第4代Ob,分为空白对照组、pcDNA3.1组... 详细信息

目的:探究y-box蛋白5(sOx5)对大鼠成骨细胞(Ob)增殖及核因子-κb(NF-κb)信号通路的影响。方法:取新生24 h sPF级sD乳鼠,应用酶消化法分离大鼠颅骨Ob。形态学观察和ALP染色鉴定成骨细胞;取生长良好的第4代Ob,分为空白对照组、pcDNA3.1组、pcDNA-sOx5组、si-NC组、sirNA-sOx5组。转染48 h后qrT-PCr检测细胞中sOx5 mrNA的表达;MTT法检测细胞增殖活力;ALP活性检测试剂盒测量ALP活性;茜素红染色观察钙结节的形成情况;western blotting检测Ob分化及NF-κb信号通路相关蛋白runt相关转录因子2(runx2)、Ⅰ型胶原蛋白(CollagenⅠ)、NF-κb p65及其磷酸化蛋白、Kb抑制蛋白激酶α(Iκbα)、肿瘤坏死因子α(TNF-α)的表达。结果:与空白对照组相比,pcDNA-sOx5组大鼠Ob中sOx5 mrNA水平、p-NF-κb p65/NF-κb p65、TNF-α蛋白表达显著升高(Pb增殖活力、ALP活性、钙化结节数量和面积、runx2、CollagenⅠ、Iκbα表达显著降低(PsirNA-sOx5组大鼠Ob中sOx5 mrNA水平、p-NF-κb p65/NF-κb p65、TNF-α蛋白表达明显降低(Pb增殖活力、ALP活性、钙化结节数量和面积、runx2、CollagenⅠ、Iκbα表达明显升高(PsOx5具有调控Ob增殖、分化的作用,其作用机制可能与调控NF-κb信号通路有关。

关键词：骨质疏松 y-box蛋白5 成骨细胞核因子-κb

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Investigation of absorption and scattering characteristics of kiwifruit tissue using a single integrating sphere system

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Journal of Zhejiang University-science b(biomedicine & biotechnology) 2016年第6期17卷 484-492页

作者： Zhen-huan fang xia-ping FU xue-ming HE College of biosystems Engineering and Food science Zhejiang University

For a quantitative understanding of light interaction with fruit tissue, it is critical to obtain two fundamental parameters： the absorption coefficient and the scattering coefficient of the tissue. This study was to investigate the optical properties of kiwifruit tissue at the wavelength of 632.8 nm. The total reflectance and total transmittance of kiwifruit tissue from three parts （including the flesh part, the seed part, and the seed-base part） were measured using a single integrating sphere system. based on the measured spectral signals, the absorption coefficient pa and the reduced scattering coefficient Ps＇ of kiwifruit tissue were calculated using the inverse adding-doubling （lAD） method. Phantoms made from Intralipid 20% and India ink as well as a biomimic solid phantom were used for system validation The mean values of μa and μs＇ of different parts of the kiwifruit were 0.031-0.308 mm-1 and 0.120-0.946 mm-1, respectively. The results showed significant differences among the Pa and Ps＇ of the three parts of the kiwifruit. The results of this study confirmed the importance of studying the optical properties for a quantitative understanding of light interaction with fruit tissue. Further investigation of fruit optical properties will be extended to a broader spectral region and different kinds of fruits.

关键词： Optical properties Integrating sphere Inverse adding-doubling Kiwifruit

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Mapping Properties of Certain Oscillatory Integrals on Modulation spaces

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Acta Mathematica sinica,English series 2017年第12期33卷 1647-1658页

作者： Mei fang CHENG Hui Hui LIU Ai wen sUN school of Mathematical and Computer sciences Anhui Normal University Wuhu 241002 P. R. China

suppose β1 〉 α1 ≥ 0, β2 〉 α2 ≥ 0 and （k,j） ∈ r^2. In this paper, we mainly investigate the mapping properties of the operator Tα,βf（x,y,z）=∫q^2f（x-t,y-s,z-t^ks^j）e^-2πit-β1s-β2t^-1-α1s^-1-α2 dtd... 详细信息

关键词： Modulation space singular integral operator wiener amalgam space

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