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谷胱甘肽添加对蓝莓果酱品质的影响

食品科技 2024年第4期49卷 286-294页

作者：朱志方王赫朱明明新乡市食品药品检验所河南新乡453003 河南科技学院食品学院河南新乡453003

为优化果酱加工工艺,使用适量的谷胱甘肽替代抗坏血酸(维生素C)制备蓝莓果酱,测定其加工过程中果酱持水力、色泽、总酚、花青素、抗氧化性及流变特性的变化。结果表明,与添加维生素C的对照组相比,谷胱甘肽的添加可减缓持水力、总酚及花... 详细信息

为优化果酱加工工艺,使用适量的谷胱甘肽替代抗坏血酸(维生素C)制备蓝莓果酱,测定其加工过程中果酱持水力、色泽、总酚、花青素、抗氧化性及流变特性的变化。结果表明,与添加维生素C的对照组相比,谷胱甘肽的添加可减缓持水力、总酚及花色苷含量的下降程度。同时,显著提升样品的亮度L~*值(P<0.05),保护蓝莓果酱的色泽。谷胱甘肽的添加也可增强蓝莓果酱成品对1,1-二苯基-2-三硝基苯肼(1,1-Diphenyl-2-picrylhydrazyl,DPPH)自由基、羟基自由基和2,2-联氨-双-3-乙基苯并噻唑啉-6-磺酸(2,2’-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid,ABTS))阳离子自由基的清除能力(P<0.05),使蓝莓果酱表现出更强的抗氧化能力。流变学结果显示,蓝莓果酱为剪切稀化的假塑性流体,储能模量(G′)始终大于相应的损耗模量(G″),表现出以弹性为主的黏弹体特征。谷胱甘肽添加组的黏度值、G′值和G″均高于相应的对照组(P<0.05),表明谷胱甘肽的添加可增加蓝莓果酱的黏性和流体性质,使其具有更好的剪切稳定性和黏弹性。综上,谷胱甘肽的添加能较好地改善果酱品质特性,可为新型高端果酱产品的开发提供理论参考。

关键词：谷胱甘肽蓝莓果酱理化特性抗氧化性流变特性

角果木内生真菌Penicillium herquei JX4中2个新的pinophol类化合物

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中国中药杂志 2024年第13期49卷 3548-3551页

作者：劳先磊吴美珠郑婷陈光英郑彩娟陈雅林周金琪冯硕周学明宋鑫明海南师范大学热带药用资源化学教育部重点实验室、海南省热带药用植物化学重点实验室海南海口571158

应用OSMAC策略,对来源于红树角果木的内生真菌Penicillium herquei JX4进行次级代谢产物及其抗炎活性研究。综合运用硅胶柱色谱、凝胶柱色谱、ODS柱色谱以及半制备高效液相色谱技术对真菌*** JX4的PDB发酵物进行分离纯化以及鉴定,共分... 详细信息

应用OSMAC策略,对来源于红树角果木的内生真菌Penicillium herquei JX4进行次级代谢产物及其抗炎活性研究。综合运用硅胶柱色谱、凝胶柱色谱、ODS柱色谱以及半制备高效液相色谱技术对真菌*** JX4的PDB发酵物进行分离纯化以及鉴定,共分离鉴定了2个pinophol类新化合物:pinophol H(1)和pinophol I(2)。对这2个化合物进行了脂多糖(LPS)诱导RAW264.7细胞NO生成抑制活性测试,结果表明化合物1具有显著的NO生产抑制活性,其IC_(50)为8.12μmol·L^(-1)。

关键词：角果木内生真菌 Penicillium herquei JX4 pinophol 抗炎

Measurement of 2p-3d absorption in a hot molybdenum plasma

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Matter and Radiation at Extremes 2024年第4期9卷 68-79页

作者： Gang Xiong Bo Qing Zhiyu Zhang Longfei Jing Yang Zhao Minxi Wei Yimeng Yang Lifei Hou Chengwu Huang Tuo zhu Tianming Song Min Lv Yan Zhao Yuxue Zhang Guohong Yang Zeqing Wu Jun Yan Yaming Zou Jiyan Zhang Jiamin Yang Shanghai EBIT Laboratory and Key Laboratory of Nuclear Physics and Ion-Beam Application(MOE)Institute of ModernPhysicsFudan UniversityShanghai 200433China Laser Fusion Research Center China Academy of Engineering PhysicsMianyang 621900China Institute of Applied Physics and Computational Mathematics Beijing 100088China

We present measurements of the 2p-3d transition opacity of a hot molybdenum-scandium sample with nearly half-vacant molybdenum M-shell configurations.A plastic-tamped molybdenum-scandium foil sample is radiatively heated to high temperature in a compact D-shaped gold Hohlraum driven by∼30 kJ laser energy at the SG-100 kJ laser facility.X rays transmitted through the molybdenum and scandium plasmas are diffracted by crystals and finally recorded by image *** electron temperatures in the sample in particular spatial and temporal zones are determined by the K-shell absorption of the scandium plasma.A combination of the IRAD3D view factor code and the MULTI hydrodynamic code is used to simulate the spatial distribution and temporal behavior of the sample temperature and *** inferred temperature in the molybdenum plasma reaches a average of 138±11 eV.A detailed configuration-accounting calculation of the n=2–3 transition absorption of the molybdenum plasma is compared with experimental measurements and quite good agreement is *** present measurements provide an opportunity to test opacity models for complicated M-shell configurations.

关键词： molybdenum absorption configuration

Numerical Analysis of Finite Element Combined Simulation Model for Three-Phase Squirrel-Cage Induction Motor

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Numerical Analysis of Finite Element Combined Simulation Mod...

第36届中国控制会议

作者： mingxing Yu Jiazheng zhu xing Wang Department of information engineering Chaoyang Teachers College Huludao Power Supply Company State Grid Liaoning Electrical Power Co.Ltd. School of Mechanical Engineering Key Laboratory for Micro/Nano Technology and System of Liaoning ProvinceDalian University of Technology

ISBN: (纸本)9781538629185

The ANSYS finite element software of high computational accuracy was used to perform joint simulation for asynchronous *** Maxwell 2D finite element model of 7.5kW squirrel-cage asynchronous motors was *** model was imported into Simplorer to establish the joint simulation *** the output end of the motor,the moment of inertia was set,and the state machine feature module was used to simulate the change situation of load *** on magnetic circuit and equivalent circuit calculation method,the current,torque and rotational speed of motors under idling and varying load working conditions were analyzed and *** on the calculation method of magnetic field,two dimensional transient alternating magnetic field solvers was used to analyze the change situation of transient electromagnetic field under idling and varying load ***,the distribution of air gap flux density was solved,and the harmonics of air gap flux density was *** contents of harmonic amplitude were extracted,and the effect of harmonics on motors was *** results provide reference to motor control strategies.

关键词： Asynchronous motor finite element analysis combined simulation transient field harmonic analysis

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间隙生产与氛围影像:书信电影的媒介实践

电影艺术 2024年第1期 52-58页

作者：赵宜祝凤仪上海师范大学影视传媒院

书信电影作为书信和电影两种媒介的融合产物,利用自身的本体特性,阻断影像对再现式幻觉的惯性聚焦,解构了经典电影的叙事逻辑,并对在书信交换领域具有过渡性质的间隙空间进行开发和呈现。这些间隙空间显示着一种自反、不稳定的结构,具... 详细信息

书信电影作为书信和电影两种媒介的融合产物,利用自身的本体特性,阻断影像对再现式幻觉的惯性聚焦,解构了经典电影的叙事逻辑,并对在书信交换领域具有过渡性质的间隙空间进行开发和呈现。这些间隙空间显示着一种自反、不稳定的结构,具有模糊话语边界和作者身份的开放品质,本质上构成了一种氛围影像。以此书信电影不仅僭越且扩展了电影的边界,还向内开拓出了面向感知经验与反思性交流的场域,显示出了其在媒介解放与文化表达层面的双重优势。

关键词：书信电影信件电影间隙交互

Self-expanding metal stent for relieving the stricture after endoscopic injection for esophageal varices

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World Journal of Clinical Cases 2024年第28期12卷 6180-6186页

作者： Fu-Long Zhang Jing Xu Yu-Hong Jiang Yuan-Dong zhu Yan Shi Xiao Li Hai Wang Chao-Jun Huang Chun-Hua Zhou Qun zhu Jing-Wen Chen Department of Gastroenterology Hangzhou Xixi HospitalHangzhou 310023Zhejiang ProvinceChina

BACKGROUND Esophageal stricture is one of the complications after esophageal varices sclero-therapy injection(ESI),and the incidence rate is between 2%-10%.AIM To explore the efficacy of self-expanding metal stent(SEMS)for the stricture after endoscopic injection with cyanoacrylate(CYA)and sclerotherapy for esophageal *** We retrospectively analyzed the efficacy of SEMS to improve the stricture after endoscopic injection with CYA and sclerotherapy for esophageal varices in 4 patients from February 2023 to June *** The strictures were improved in four patients after *** stent was removed after two weeks because of chest pain with embedding into esophageal mucosa in one *** stent was removed after one month,however,the stent was reinserted because of the strictures happening again in two *** stent was removed after three months,however,the stent was reinserted because of the strictures happening again in one *** stent embedded into esophageal mucosa in three *** were 3 patients suffered reflux esophagitis,and the acid reflux was relieved by taking *** was no other complication of esophageal perforation,bleeding from varices or *** SEMS may relieve the stricture which happened after endoscopic injection with CYA and sclerotherapy for esophageal ***,when we should remove the stent still needs to be explored.

关键词： Stent Stricture Endoscopic injection Esophageal varices cyanoacrylate Sclerotherapy

Correlating Fe source with Fe-N-C active site construction： Guidancefor rational design of high-performance ORR catalyst

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Journal of Energy Chemistry 2018年第6期27卷 1668-1673页

作者： Liqin Gao Meiling Xiao Zhao Jin Changpeng Liu Jianbing zhu Junjie Ge Wei xing State Key Laboratory of Electroanalytical Chemistry Changehun Institute of Applied Chemistry Chinese Academy of Science Changchun 130022Jilin China University of Chinese Academy of Sciences Beijing 100039 China Laboratory of Advanced Power Sources Changchun Institute of Applied Chemistry Changchun 130022 Jilin China

Pyrolyzed Fe-Nx/C materials derived from Fe-doped ZIF-8 are recently emerged as promising alternativesto noble metal platinum-based catalysts towards oxygen reduction reaction （ORR） and elucidating the de-pendacne of Fe source on the active site structure and final ORR performance is highly desirbale for fur-ther development of these materials. Here, we designed and synthesized a series of Fe-N-C catalysts usingZIF-8 and various iron salts （Fe（acac）3, FeCI3, Fe（NO3）3） as precusors. We found that the iron precursors,mainly the molecular size, hydrolysis extent, do play a major role in determining the final morphology ofFe, namely forming the Fe-Nx coordination or Fe3C nanoparticles, as well as the site density, therefore,significantly affecting the ORR activity. Among the three iron sources, Fe（acac）3 is most advantageous tothe preferential formation of single-atom Fe-Nx active sites and the derived catalyst demonstrated bestORR performance.

关键词： Carbon-nitrogen-coordinated iron (FEN4) Oxygen reduction reaction Iron source Molecular size Hydrolysis

Typhoon-and pollution-driven enhancement of reactive bromine in the mid-latitude marine boundary layer

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National Science Review 2024年第4期11卷 93-101页

作者： Shanshan Wang Qinyi Li Ruifeng Zhang Anoop Sharad Mahajan Swaleha Inamdar Nuria Benavent Sanbao Zhang Ruibin Xue Jian zhu Chenji Jin Yan Zhang Xiao Fu Alba Badia Rafael P.Fernandez Carlos A.Cuevas Tao Wang Bin Zhou Alfonso Saiz-Lopez Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3) Department of Environmental Science and Engineering Fudan University Institute of Eco-Chongming(IEC) Department of Atmospheric Chemistry and Climate Institute of Physical Chemistry Blas CabreraCSIC Department of Civil and Environmental Engineering The Hong Kong Polytechnic University Environment Research Institute Shandong University Centre for Climate Change Research Indian Institute of Tropical MeteorologyMinistry of Earth Sciences Department of Chemistry University of Colorado Boulder Institute of Environment and Ecology Tsinghua Shenzhen International Graduate SchoolTsinghua University Sostenipra Research Group Institute of Environmental Science and Technology(ICTA)Universitat Autonoma de Barcelona(UAB) Institute for Interdisciplinary Science (ICB) National Research Council (CONICET)

Tropospheric reactive bromine is important for atmospheric chemistry,regional air pollution,and global *** studies have reported measurements of atmospheric reactive bromine species in different environments,and proposed their main sources,***-salt aerosol（SSA）,oceanic biogenic activity,polar snow/ice,and *** and other strong cyclonic activities（***） induce abrupt changes in different earth system processes,causing widespread destructive ***,the role of typhoons in regulating reactive bromine abundance and sources remains ***,we report field observations of bromine oxide（BrO）,a critical indicator of reactive bromine,on the Huaniao Island（HNI）in the East China Sea in July *** observed high levels of BrO below 500 m with a daytime average of9.7±4.2 pptv and a peak value of ～26 pptv under the influence of a *** field measurements,supported by model simulations,suggest that the typhoon-induced drastic increase in wind speed amplifies the emission of SSA,significantly enhancing the activation of reactive bromine from SSA *** also detected enhanced BrO mixing ratios under high NOxconditions（ppbv level） suggesting a potential pollution-induced mechanism of bromine release from *** elevated levels of atmospheric bromine noticeably increase ozone destruction by as much as ～40% across the East China *** the high frequency of cyclonic activity in the northern hemisphere,reactive bromine chemistry is expected to play a more important role than previously thought in affecting coastal air quality and atmospheric oxidation *** suggest that models need to consider the hitherto overlooked typhoon-and pollution-mediated increase in reactive bromine levels when assessing the synergic effects of cyclonic activities on the earth system.

关键词： reactive bromine atmospheric chemistry marine boundary layer atmospheric oxidation capacity marine emission

不同中成药治疗冠心病心力衰竭的网状Meta分析

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中国中药杂志 2024年第2期49卷 518-533页

作者：王澳龙卫靖靖孙阳郭红鑫张铭杰卢健峰张艺琳彭广操朱明军河南中医药大学河南郑州450000 河南中医药大学第一附属医院河南郑州450000 河南省中药安全评价与风险防控工程研究中心河南郑州450000

运用网状Meta分析评价不同中成药治疗冠心病心力衰竭的疗效与安全性。通过计算机检索中国知网(CNKI)、万方(Wanfang)、维普(VIP)、中国生物医学文献服务系统(SinoMed)、PubMed、Web of Science、EMbase、Cochrane Library,搜集建库至202... 详细信息

运用网状Meta分析评价不同中成药治疗冠心病心力衰竭的疗效与安全性。通过计算机检索中国知网(CNKI)、万方(Wanfang)、维普(VIP)、中国生物医学文献服务系统(SinoMed)、PubMed、Web of Science、EMbase、Cochrane Library,搜集建库至2023年7月5日中成药治疗冠心病心力衰竭的随机对照试验(RCT)。根据Cochrane系统评价手册偏倚风险评估工具对符合纳入标准的文献进行质量评价,通过Stata 16.0软件进行网状Meta分析。最终纳入82篇RCTs,总样本量9 298例,涉及11种中成药。网状Meta分析结果显示,(1)改善临床有效率方面,累计概率排名曲线下面积(SUCRA)排名前3的干预措施为芪参益气滴丸+常规西医、振源胶囊+常规西医、通心络胶囊+常规西医;(2)改善左心室射血分数(LVEF)方面,SUCRA排名前3的干预措施为麝香保心丸+常规西医、复方丹参滴丸+常规西医、通心络胶囊+常规西医;(3)降低左心室舒张末期内径(LVEDD)方面,SUCRA排名前3的干预措施为麝香通心滴丸+常规西医、通心络胶囊+常规西医、麝香保心丸+常规西医;(4)降低N末端B型利钠肽前体(NT-proBNP)方面,SUCRA排名前3的干预措施为麝香保心丸+常规西医、芪参益气滴丸+常规西医、复方丹参滴丸+常规西医;(5)降低超敏C反应蛋白(hs-CRP)方面,SUCRA排名前3的干预措施为脑心通胶囊+常规西医、麝香保心丸+常规西医、复方丹参滴丸+常规西医;(6)改善6 min步行试验(6MWT)方面,SUCRA排名前3的干预措施为振源胶囊+常规西医、芪苈强心胶囊+常规西医、芪参益气滴丸+常规西医。结果表明,不同中成药联合常规西医治疗冠心病心力衰竭较常规西医能有效改善临床有效率、LVEF和6MWT,降低LVEDD、NT-proBNP和hs-CRP,但由于纳入文献质量整体偏低,部分中成药纳入文献较少,缺乏不同中成药之间的直接比较等因素,结果还需进一步验证。

关键词：中成药冠心病心力衰竭网状Meta分析