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渗透汽化结合GC-MS分析豫烟浸膏的风味组分

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分析测试学报 2024年第6期43卷 837-847页

作者：窦思颖张华沈海峰朱怀远姚忠廖惠云南京工业大学食品与轻工学院江苏南京211816 江苏中烟工业有限责任公司技术中心江苏南京210019

为探明渗透汽化分离提取豫烟浸膏挥发性组分的效果,采用固相支持液液萃取/气相色谱‒质谱联用法(SLE/GC‒MS)和感官特征定量描述法,分别对分离所得样品溶液进行非靶向分析和香韵特征评价,利用化学计量学探究样品组分差异,筛选关键差异组... 详细信息

为探明渗透汽化分离提取豫烟浸膏挥发性组分的效果,采用固相支持液液萃取/气相色谱‒质谱联用法(SLE/GC‒MS)和感官特征定量描述法,分别对分离所得样品溶液进行非靶向分析和香韵特征评价,利用化学计量学探究样品组分差异,筛选关键差异组分并分析其与感官香韵特征的相关性。结果表明:(1)相比于原液,优化条件下渗透汽化分离得到的样品溶液在果香、清香、甜香风格方面显著提高,膏香有所减弱,其中截留液的香韵属性得分整体得到提升,渗透液和清洗液稍有减弱;(2)不同样品溶液共检出101个化合物,包括醇类、酯类、醛类、酮类、酸类、酚类、烃类和主要由生物碱构成的其他类等13类物质,烃类、酮类及其他类在挥发性组分中占比较大,其中膜组件对烃类、醇类等组分的选择性较大,不同溶剂体系对醇类、酮类、酯类和酚类的浓度变化影响较大;(3)主成分分析显示样品原液和截留液组分较一致,且与透过液和清洗液有效区分,正交偏最小二乘法‒判别分析筛选出28个差异化合物(VIP>1、P<0.05)。偏最小二乘回归分析表明,特征挥发性组分与烤烟烟香、木香、清香、甜香和焦香香韵指标呈正相关。研究结果可为采用渗透汽化分离提取豫烟浸膏提供指导依据,进而为天然植物香原料精细化分离加工提供技术支持。

关键词：渗透汽化豫烟浸膏气相色谱‒质谱联用风味组分感官特征化学计量学

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基于HTC vive的VRED虚拟现实技术开发

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汽车零部件 2024年第3期 52-55页

作者：王国锋唐辉吴光华廖慧红吉利汽车研究院(宁波)有限公司

针对传统造型评审过程存在的高成本、长周期、无沉浸感的问题，结合虚拟现实技术及VRED软件，依托HTC vive硬件系统及Python语言，开发了一套汽车虚拟现实评审系统。使用结果表明该评审系统能有效扩展虚拟评审功能，增强汽车评审过程中... 详细信息

针对传统造型评审过程存在的高成本、长周期、无沉浸感的问题，结合虚拟现实技术及VRED软件，依托HTC vive硬件系统及Python语言，开发了一套汽车虚拟现实评审系统。使用结果表明该评审系统能有效扩展虚拟评审功能，增强汽车评审过程中的人与虚拟样机的交互性能，提升评审效率节约研发成本。

关键词：虚拟现实 HTC vive VRED 交互

A newly designed big cup nitinol stent for gastric outlet obstruction

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World Journal of Gastroenterology 2010年第33期16卷 4206-4209页

作者： Ding Shi Sheng-hui liao Jian-Ping Geng Department of Gastroenterology the First People’s Hospital of Yuhang District Hangzhou 311100 Zhejiang Province China School of Information Science and Engineering Central South University Changsha 410083 Hunan Province China Institute for Biomedical Engineering Nanjing University of Technology Nanjing 210009 Jiangsu Province China

AIM:To find out whether a newly designed big cup nitinol stent is suitable for treatment of patients with gastric outlet obstruction resulting from gastric ***:The new stent is composed of a proximal big cup segment(20 mm in length and 48-55 mm in diameter),a middle part(60 mm in length and 20 mm in diameter)covered by a polyethylene membrane and a distal sphericity(20 mm in length and 28 mm in diameter).Half of the proximal big cup segment is also covered by a polyethlene membrane,which is adjacent to the middle part of the *** stent is preloaded in a 6.0-mm-diameter introducer *** patients with gastric outlet obstruction resulting from gastric cancer received the new stents under endoscopic and fluoroscopic ***:Technical success was achieved in 12 of 13(92.3%)*** the 12 patients in whom endoscopic stent was placed successfully,the clinical success rate was 91.7%during a follow-up of average 6.5 *** the first month follow-up,the migration rate was 0%,recurrent obstruction 0%and gastric bleeding 8.3%.During the follow-up between 2-12 mo,no migration,recurrent obstruction and gastric bleeding ***:The proximal big cup segment seems to be effective and promising for technical efficacy,clinical outcome,and preventing migration and tumor ingrowth and increasing the emptying rate of sinus ventriculi.

关键词： Endoscopic Gastric outlet Stenosis Ob- struction Stents

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陈沁教授治疗肺结节临床经验总结

内蒙古中医药 2024年第1期43卷 52-54页

作者：廖辉林雯徐峰圣陈沁福建中医药大学第一临床医学院福建福州350004 福建中医药大学附属人民医院呼吸科福建福州350004 福建中医药大学临床技能中心福建福州350122

随着低剂量肺部螺旋CT的普及和百姓对健康体检的重视,近年来肺结节检出率总体呈上升趋势。中医中药在病灶的缩小消除、预防结节恶变、外科术后复发等方面疗效显著,减轻了心理及经济负担。陈沁教授认为肺结节基本病机可概述为肺、脾、肝... 详细信息

随着低剂量肺部螺旋CT的普及和百姓对健康体检的重视,近年来肺结节检出率总体呈上升趋势。中医中药在病灶的缩小消除、预防结节恶变、外科术后复发等方面疗效显著,减轻了心理及经济负担。陈沁教授认为肺结节基本病机可概述为肺、脾、肝三脏气血津液输布失常,邪聚于肺。性质多本虚标实,以虚为本,痰瘀气滞热毒为标。治疗上应以化痰祛瘀、疏肝理气、清热解毒治其标,益肺健脾治其本,在辨证论治的基础上,软坚散结治疗贯穿始末,本文对陈沁教授治疗肺结节的临证经验进行总结。

关键词：肺结节中医药经验总结

Synergistic extraction and separation of thorium from rare earths in chloride media using mixture of Cextrant 230 and Cyanex 923

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Journal of Rare Earths 2024年第4期42卷 759-767页

作者： hui Wang Shengting Kuang Wuping liao School of Rare Earths University of Science and Technology of ChinaHefei230026China Institute of Material and Chemistry Ganjiang Innovation AcademyChinese Academy of SciencesGanzhou341000China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China

In order to lower the usage of expensive Cyanex 923 and increase the extraction capacity of the system of Cextrant 230,the synergistic extraction of thorium from chloride media by a mixture of Cextrant 230 and Cyanex 923 was *** maximum synergistic enhancement coefficient(R)of 1.53 is obtained at 1:1 molar ratio of Cextrant 230/Cyanex *** syne rgistic extracted species of Th^(4+)is determined as ThCl_(4)·2Cextrant 230·Cyanex *** synergistic extraction of Th^(4+)is an entropy-driven exothermic *** loading capacity of 0.60 mol/L mixed extractant for thorium is about 17.10 g/L(calculated as ThO_(2)),and the loaded thorium in the organic phase can be effectively stripped by distilled *** comparison,rare earth cations are barely extracted under the similar conditions,suggesting that the mixtures can be applied to separate thorium from rare earths.A cascade extraction process was developed based on the synergistic extraction system to separate thorium from the hydrochloric acid leaching of *** content of thorium in the leaching solution decreases obviously from 19.90 mg/L to1.4μg/L by 3 stages of extraction,which is superior to sole Cextrant 230 or Cyanex *** introduction of Cextrant 230 into the extraction system not only lowers the usage of Cyanex 923 but also enhances the selective extraction of thorium at low acidity,implying that the synergistic extraction system can selectively extract thorium more efficiently and economically than the sole systems.

关键词： Synergistic extraction Cextrant 230 Cyanex 923 Thorium Rare earths

岭南罗氏妇科当代传承人辨治绝经前后诸证用药规律研究

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广州中医药大学学报 2024年第6期41卷 1632-1640页

作者：杜子琪陈慕镟陈怡曾蕾廖慧慧广州中医药大学第一临床医学院广东广州5510405 广州中医药大学第一附属医院广东广州510405

【目的】基于数据挖掘技术探讨岭南罗氏妇科当代传承人辨治绝经前后诸证的思路与用药规律。【方法】收集岭南罗氏妇科当代传承人门诊治疗绝经前后诸证的医案,采用古今医案云平台(V2.3.5)对病案数据进行频数统计、关联规则分析、聚类分... 详细信息

【目的】基于数据挖掘技术探讨岭南罗氏妇科当代传承人辨治绝经前后诸证的思路与用药规律。【方法】收集岭南罗氏妇科当代传承人门诊治疗绝经前后诸证的医案,采用古今医案云平台(V2.3.5)对病案数据进行频数统计、关联规则分析、聚类分析及复杂网络分析。【结果】最终纳入医案191份,处方191首,涉及中药160味。四诊信息及证型统计显示,绝经前后诸证的病机以本虚为主,正虚失调,枢机不利,多脏受累,其中肝肾阴虚证最为常见。出现频次≥40次的高频中药有26味,居前5位的中药为百合、党参、山茱萸、白芍、熟地黄。药物的性味以甘平为主,多入肝、心、肾、脾经。关联规则分析共获得15对高置信度药物组合;高频中药的聚类分析得到5类核心药物组合。复杂网络分析揭示了以熟地黄、山茱萸、菟丝子、百合、酸枣仁、丹参、珍珠母为主的核心处方。关联规则分析得到使用频次较高的药对为女贞子-山茱萸及女贞子-丹参。【结论】岭南罗氏妇科当代传承人治疗绝经前后诸证以滋养肝肾为切入点,兼养心安神、益气健脾、和解枢机,用药以“甘淡平补”为主,遣方用药与罗元恺教授之学术思想一脉相承。

关键词：绝经前后诸证岭南罗氏妇科罗元恺当代传承人滋养肝肾养心安神益气健脾和解枢机数据挖掘

Structures and Properties of La_(0.8)Sr_(0.2)MnO_(3+σ)^(-z) SBA-15(z=0, 1, 2, 4) Perovskite Catalysts

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Journal of Wuhan University of Technology(Materials Science) 2018年第1期33卷 23-29页

作者：黄学辉 NIU Pengju LI Ming liao hui SHANG Xiaohui School of Materials Science and Engineering Wuhan University of Technology

Mesoporous La0.8Sr0.2MnO3＋σ/z SBA-15（z = 1, 2, 4） perovskite oxides were synthesized via hard-templating with ordered mesoporous silica SBA-15 as the template. The as-prepared samples were characterized by XRD, SEM, AFM, BET, and XPS and the catalytic activity was tested for CO oxidation. The wide-angle XRD patterns showed that La0.8Sr0.2MnO3＋σ perovskite was formed. The SEM and AFM analyses exhibited that La0.8Sr0.2MnO3＋σ by hard-templating method had much smaller particle size（18 nm） than that（40 nm） by the sol-gel method. The perovskite-type oxides La0.8Sr0.2MnO3＋σ/z SBA-15（z = 1, 2, 4） also displayed a higher BET surface area from 70 to 143.7 m^2/g and a disordered mesostructure from nitrogen sorption analysis, as well as a small-angle XRD pattern. Moreover, the La0.8Sr0.2MnO3＋σ/z SBA-15（z = 1, 2, 4） perovskite exhibited a much higher activity in CO oxidation than the conventional La0.8Sr0.2MnO3＋σ perovskite. Further analysis by the means of XPS techniques indicated that the existence of high content of Oads/Olatt species contributed to the high activity.

关键词： hard-templating sol-gel perovskite catalyst mesoporous structure CO oxidation

基于STM32H7A3的频分复用型TDLAS激光驱动系统研制

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激光杂志 2024年第4期45卷 35-39页

作者：王彪吴剑星吕婉溧杨银春廖辉吴立彬张瑞中国科学院长春光学精密机械与物理研究所长春130033 吉林大学长春130015 中国科学院大学北京100049

随着气候变化问题日渐凸显,习近平主席作出了碳达峰、碳中和的重要指示,因此对二氧化碳检测的研究具有重要的意义。针对二氧化碳和水汽同时检测的需要,本文设计了一种频分复用型TDLAS激光驱动系统。系统采用STM32H7A3作为主控器,利用其... 详细信息

随着气候变化问题日渐凸显,习近平主席作出了碳达峰、碳中和的重要指示,因此对二氧化碳检测的研究具有重要的意义。针对二氧化碳和水汽同时检测的需要,本文设计了一种频分复用型TDLAS激光驱动系统。系统采用STM32H7A3作为主控器,利用其内部高级定时器和多通道DAC产生多路幅值频率可调的电压信号,搭配外部V-I转换电路和光纤合束器研制出频分复用型TDLAS激光驱动系统。系统配备FLASH存储芯片和对应的上位机软件,具有灵活设置系统参数、存储加载控制数据并且在断电时保护数据不丢失的功能。经过测试,该系统输出的电流信号波形稳定,频率误差小,可应用于TDLAS系统进行多个激光器的同时驱动。

关键词： TDLAS 频分复用电流驱动 STM32H7A3

Experimental study of single-translated fieldreversed configuration in KMAX

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Plasma Science and Technology 2022年第9期24卷 37-44页

作者： hui liao Chaoqi HU Yilin LI Baoming REN Xuan SUN Department of Plasma Physics and Fusion Engineering School of Nuclear Science and TechnologyUniversity of Science and Technology of ChinaHefei 230026People’s Republic of China

For collisional merging fleld-reversed conflgurations(FRCs),it is desired to have both FRCs tuned to be approximately the same,as well as to optimize each FRC to have high temperature and high translation speed so as to retain most of the equilibrium flux after traveling a distance to the middle plane for *** present study reports the experimental study of a single-translated FRC in the KMAX-FRC device with various diagnostics,including a triple probe,a bolometer,several magnetic probe arrays,and a novel 2 D internal magnetic probe *** to the measurements conducted in the present study,a maximum toroidal magnetic fleld equal to~1/3 of the external magnetic fleld inside the FRC separatrix radius is observed,and the typical parameters of a single-translated FRC near the device’s mid-plane are ne~(2–4)×10^(19)m^(-3),T_(e)~8e V,T_(i)~5 e V,r_(s)~0.2 m,l_(s)~0.6 m andφ_(()p(RR))~0.2 m *** 2 D magnetic topology measurement revealed,for the flrst time,the time evolution of the overall internal magnetic flelds of a single-translated FRC,and an optimized operation regime is given in the paper.

关键词： fleld-reversed conflguration FRC formation FRC translation probe measurement