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离子色谱指纹图谱分析在烟用香精香料品质评价中的应用

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色谱 2024年第8期42卷 805-811页

作者：许高燕何歆滢张丽娜刘崇盛高阳黄忠平刘会君吴兆明章瑞潮施宏浙江中烟工业有限责任公司技术中心浙江杭州310008 浙江工业大学化学工程学院浙江杭州310014

为保证烟用香精香料品质的一致性,采用离子色谱法对烟用香精香料样品中的9种有机酸及7种无机阴离子进行分析。1.0 g样品中加入10 mL去离子水,振荡萃取30 min后,水相溶液用0.45μm微孔滤膜过滤,滤液进一步采用RP前处理柱除去基质,经离子... 详细信息

为保证烟用香精香料品质的一致性,采用离子色谱法对烟用香精香料样品中的9种有机酸及7种无机阴离子进行分析。1.0 g样品中加入10 mL去离子水,振荡萃取30 min后,水相溶液用0.45μm微孔滤膜过滤,滤液进一步采用RP前处理柱除去基质,经离子色谱仪分离测定。采用Dionex IonPac AS11-HC阴离子交换柱及淋洗液梯度洗脱,9种有机酸和7种常规无机阴离子标准工作溶液的保留时间和峰面积日内精密度(RSD)分别为0.01%~0.69%和1.34%~2.98%,日间RSD分别为0.03%~0.68%和3.54%~5.16%。同时对烟用香精香料标准样品A~D(各5个批次)中有机酸和无机酸的保留时间和峰面积RSD进行考察,得到的保留时间和峰面积日内RSD分别为0.01%~0.71%和2.39%~3.22%,日间RSD分别0.05%~0.81%和3.61%~6.02%。建立了4种烟用香精香料(各5个批次)的指纹谱图库,并采用系统聚类分析和相似度分析法对其他生产厂家样品进行品质评价。结果表明,聚类分析法能有效地从不同生产厂家的产品中筛选出与标准样品质量最相近的样品;实际样品AY3、BY2、CY2及DY1与香精香料标准品性质最接近,品质较好。相似度分析可以对不同生产厂家的产品质量进行更加具体、量化的评价,实际样品AY3、BY2、CY2及DY1与香精香料标准品的化学成分相似度值均大于97.7%,符合相似度评价要求。相较于超声辅助液液萃取-气相色谱法,对于个别特殊样品,离子色谱法能更有效地区分香精香料样品间的品质差异。

关键词：离子色谱法烟用香精香料色谱指纹图谱聚类分析相似度分析

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2021—2022年度成都市某哨点医院住院重症急性呼吸道感染患者监测结果分析

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预防医学情报杂志 2024年第5期40卷 562-566页

作者：张磊黄忠平徐佳楠杨慧萍黄韦唯潘明西南医科大学四川泸州646000 四川省疾病预防控制中心成都610041 成都市疾病预防控制中心成都610041

目的了解四川成都市某哨点医院住院重症急性呼吸道病毒感染(SARI)患者的病原谱,为流感阴性患者的诊断处理提供依据。方法对2021年1月至2022年12月收集到的成都市某哨点医院SARI病例咽拭子标本,使用多重荧光PCR的方法进行多种呼吸道病原... 详细信息

目的了解四川成都市某哨点医院住院重症急性呼吸道病毒感染(SARI)患者的病原谱,为流感阴性患者的诊断处理提供依据。方法对2021年1月至2022年12月收集到的成都市某哨点医院SARI病例咽拭子标本,使用多重荧光PCR的方法进行多种呼吸道病原的检测。采用χ^(2)检验进行组间率的比较(SPSS 26.0软件),检验水准为α=0.05。结果采集到的608例SARI患者标本中,共检出呼吸道病原体阳性的患者300例,总阳性率为49.34%。其中流感嗜血杆菌阳性155例(阳性率为25.49%),腺病毒阳性58例(9.54%),乙型流感病毒阳性45例(7.40%),甲型流感病毒阳性32例(5.30%);混合感染72例(11.84%)。流感病毒集中于秋冬季节,呼吸道合胞病毒主要集中在春季。不同年龄组的感染阳性率比较,差异有统计意义(P<0.001),5~17岁病例病原体检出阳性率最高(80.23%),其次是5岁以下病例(59.17%)等。结论成都市SARI病例的主要病原体为流感嗜血杆菌、流感病毒、腺病毒等。感染不同病原出现不同月份高峰,要做好对18周岁以下年龄组SARI患者的病原监测。SARI病例的多种呼吸道病原体检测,不但能够为医院治疗未知病因呼吸道感染患者带来帮助,而且对SARI的防治与管理有着重要的公共卫生作用。

关键词：住院严重急性呼吸道感染病原检测多重荧光PCR

Market Operation of Energy Storage System in Smart Grid:A Review

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Energy Engineering 2024年第6期121卷 1403-1437页

作者： Li Deng Jiafei Huan Wei Wang Weitao Zhang Liangbin Xie Lun Dong Jingrong Guo zhongping Li Yuan huang Yue Xiang North China Dispatching Center North China Branch of State Grid Corporation of ChinaBeijing100053China College of Electrical Engineering Sichuan UniversityChengdu610065China

As a flexible resource,energy storage plays an increasingly significant role in stabilizing and supporting the power system,while providing auxiliary ***,the current high demand for energy storage contrasts with the fuzzy lack of market-oriented mechanisms for energy storage,the principle of market-oriented operation has not been embodied,and there is no unified and systematic analytical framework for the business ***,the dispatch management model of energy storage in actual power system operation is not ***,the specific scheduling process and energy storage strategy on the source-load-network side could be more specific,and there needs to be a greater understanding of the collaborative scheduling process of the multilevel scheduling *** this basis,this paper reviews the energy storage operation model and market-based incentive mechanism,For different functional types and installation locations of energy storage within the power system,the operational models and existing policies for energy storage participation in the market that are adapted to multiple operating states are *** the point of view of the actual scheduling and operation management of energy storage in China,an energy storage regulation and operation management model based on“national,provincial,and local”multilevel coordination is proposed,as well as key technologies in the interactive scenarios of source-load,network and storage.

关键词： Energy storage operation marketization scheduling management national-branch-provincial local dispatch

A novel composite stationary phase composed of polystyrene/divinybenzene beads and quaternized nanodiamond for anion exchange chromatography

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Chinese Chemical Letters 2019年第2期30卷 465-469页

作者： Peng Yao zhongping huang Qiulian Zhu Zuoyi Zhu Lili Wang Yan Zhu College of Chemical Engineering Zhejiang University of Technology Institute of Quality and Standard for Agricultural Products Zhejiang Academy of Agricultural Science Department of Chemistry Zhejiang University

An approach for preparation of a novel composite anion exchanger composed of polystyrene/divinylbenzene (PS/DVB) beads and quaternized nanodiamods (QND) were proposed. Oxidized nanodiamonds (OND) were quaternized by the condensation polymerization between methylamine (MA) and 1,4-butanediol diglycidyl ether (BDDE), which were characterized by Fourier transform infrared (FTIR) spectra, X-ray phtoelectron spectroscopy (XPS), thermogravimetric analysis (TGA). QND with layers of cationic polyelectrolyte was attached onto the surface of sulfonated PS/DVB beads electrostatically. Subsequently, hyperbranched reaction of QND agglomerated on the PS/DVB bead surface was performed by the alternate reaction between MA and BDDE to increase the exchange capacity. The composite anion exchanger showed good stability in organic solvent and a wide pH *** surface of these microspheres was characterized by scanning electron microscopy. In addition, ion exchange selectivity and separation efficiency of the anion exchangers were assessed using the mixtures of anions (F,Cl,NO_2,Br,NO_3,HPO_4~2 and SO_4~2) with carbonate/bicarbonate as eluent, and the anion exchanger with high exchange capacity could be used to analyze chloride in aqueous solution with high concentration of fluoride. This work explores the potential of nanodiamods as an agglomerated material for ion chromatography stationary phases for the separation of inorganic anions.

关键词： Quaternized nanodiamonds Ion chromatography Polystyrene/divinylbenzene Hyperbranched Anion exchangers

Identification of a natural PLA2 inhibitor from the marine fungus Aspergillus sp.c1 for MAFLD treatment that suppressed lipotoxicity by inhibiting the IRE-1a/XBP-1s axis and JNK signaling

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Acta Pharmaceutica Sinica B 2024年第1期14卷 304-318页

作者： Yong Rao Rui Su Chenyan Wu Xingxing Chai Jinjian Li Guanyu Yang Junjie Wu Tingting Fu zhongping Jiang Zhikai Guo Congjun Xu Ling huang Key Laboratory of Tropical Biological Resources of Ministry of Education School of Pharmaceutical SciencesHainan UniversityHaikou 570200China Hainan Key Laboratory of Tropical Microbe Resources Institute of Tropical Bioscience and BiotechnologyChinese Academy of Tropical Agricultural Sciences&Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan ProvinceHainan Institute for Tropical Agricultural ResourcesHaikou 571101China School of Pharmaceutical Sciences Guangdong Provincial Key Laboratory of New Drug Design and EvaluationSun Yat-sen UniversityGuangzhou 510275China Laboratory Animal Center of Guangdong Medical University Dongguan 523808China

Lipotoxicity is a pivotal factor that initiates and exacerbates liver injury and is involved in the development of metabolic-associated fatty liver disease(MAFLD).However,there are few reported lipotoxicity ***,we identified a natural anti-lipotoxicity candidate,HN-001,from the marine fungus Aspergillus ***-001 dose-and time-dependently reversed palmitic acid(PA)-induced hepatocyte *** protection was associated with IRE-1a-mediated XBP-1 splicing inhibition,which resulted in suppression of XBP-1s nuclear translocation and transcriptional *** of XBP-1s attenuated lipotoxicity,but no additional ameliorative effect of HN-001 on lipotoxicity was observed in XBP-1s knockdown ***,the ER stress and lipotoxicity amelioration was associated with *** HN-001 and the PLA2 inhibitor MAFP inhibited PLA2 activity,reduced lysophosphatidylcholine(LPC)level,subsequently ameliorated *** contrast,overexpression of PLA2 caused exacerbation of lipotoxicity and weakened the anti-lipotoxic effects of ***,HN-001 treatment suppressed the downstream pro-apoptotic JNK *** vivo,chronic administration of HN-001(i.p.)in mice alleviated all manifestations of MAFLD,including hepatic steatosis,liver injury,inflammation,and *** effects were correlated with PLA2/IRE-1a/XBP-1s axis and JNK signaling *** data indicate that HN-001 has therapeutic potential for MAFLD because it suppresses lipotoxicity,and provide a natural structural basis for developing anti-MAFLD candidates.

关键词： Lipotoxicity MAFLD ER stress IRE-1a XBP-1s JNK PLA2

Five Independent Cases of Human Infection with Avian Influenza H5N6—Sichuan Province,China,2021

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China CDC weekly 2021年第36期3卷 751-756,I0001页

作者： Chongkun Xiao Jianan Xu Yu Lan zhongping huang Lijun Zhou Yaxin Guo Xiyan Li Lei Yang George F.Gao Dayan Wang William J.Liu Xingyu Zhou Huiping Yang Sichuan Center for Disease Control and Prevention ChengduSichuanChina NHC Key Laboratory of Biosafety National Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijingChina.

Summary What is known about this topic?The emerging H5Ny lineages of the avian influenza virus(AIV)with genomic reassortments have posed a continuous threat to animals and human *** the first case of avian influenza A... 详细信息

关键词： H5N6 Independent Human

护理干预对宫颈癌根治术后患者泌尿系统并发症的影响

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河北医药 2022年第13期44卷 2078-2080页

作者：李良花黄仲萍四川省绵竹市人民医院妇科 618200

目的分析宫颈癌根治术患者应用护理干预措施改善预后的作用。方法选择2019年2月至2021年2月收治的宫颈癌根治术患者108例,遵循自愿参与及同意知情原则,数字随机表法分为常规组(常规普通护理)和研究组(综合护理干预),每组54例。比较2... 详细信息

目的分析宫颈癌根治术患者应用护理干预措施改善预后的作用。方法选择2019年2月至2021年2月收治的宫颈癌根治术患者108例,遵循自愿参与及同意知情原则,数字随机表法分为常规组(常规普通护理)和研究组(综合护理干预),每组54例。比较2组患者抑郁自评量表(SDS)评分、焦虑评量表(SAS),生活质量和患者满意度及并发症情况。结果研究组术后总并发症为9.26%明显少于常规组的16.67%(P<0.05);研究组SDS评分、SAS评分低于常规组(P<0.05);研究组满意度高于常规组(P<0.05);研究组生活质量评分高于常规组(P<0.05)。结论宫颈癌根治术患者临床治疗期间落实护理干预措施配合,进一步减少术后并发症,减轻患者负面情绪,促使其生活质量改善,且赢得患者满意,应用前景广阔,值得推广。

关键词：宫颈癌根治术综合护理并发症满意度生活质量

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解决XK516数控铣床的掉刀难题

制造技术与机床 2006年第4期 84-85页

作者：黄中平成都飞机工业(集团)有限责任公司设备公司

介绍了XK516数控铣床的拉刀机构,分析了掉刀的原因,针对出现的故障,阐述了改进的方法,解决了生产中的实际问题。

关键词：数控铣床主轴掉刀拉刀杆电磁离合器

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汇率机制、内外均衡与经济转型

江海学刊 2011年第2期 73-78,238页

作者：黄瑞玲黄忠平中共江苏省委党校世界经济与政治部中共惠州市委党校图书馆

现行人民币汇率形成机制在实践中存在"管理"有余而"浮动"不足的缺陷。要在后危机时代顺利实现经济转型,必须进一步推进我国汇率机制改革。一要提升汇率的市场化程度,加快市场取向改革向要素市场扩展的转变;二要克服非理性的"浮动恐惧症"... 详细信息

现行人民币汇率形成机制在实践中存在"管理"有余而"浮动"不足的缺陷。要在后危机时代顺利实现经济转型,必须进一步推进我国汇率机制改革。一要提升汇率的市场化程度,加快市场取向改革向要素市场扩展的转变;二要克服非理性的"浮动恐惧症",促进外部失衡向均衡的转变;三要化解汇率稳定与币值稳定的冲突,促进内部失衡向均衡的转变。

关键词：汇率机制经济转型外部失衡内部失衡