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Simulation of gas-solids heat transfer in cyclone pyrolyzer using CFD-DEM model

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Particuology 2024年第2期85卷 155-166页

作者： nan zhang Xueer Pan Jingxuan Yang qian Liu Wenhao Lian Xiao Du Zhonglin zhang Xiaogang Hao Guoqing Guan College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan030024China School of Chemistry and Chemical Engineering North University of ChinaTaiyuan030051China Shanxi Jinke Technology Service Company Limited Taiyuan030000China Labraory of Eey onveron Engineerng Institute f Rgional Innvation(RI)Hosaki Univerty3-BunkychoHiroak036-8561Japan

Fast heat transfer in the pyrolyzer can increase the yield of pyrolysis gas and tar,and improve the quality of *** with the downer pyrolyzer,the cyclone pyrolyzer can simultaneously achieve high solids holdup and violent turbulence,and correspondingly faster heat *** this work,the heat transfer behavior in the cyclone pyrolyzer is specifically studied using the computational fluid dynamics-discrete element *** simulation results reveal that the gas-solids heat convection contributes mainly to the heat transfer process,and the heat radiation and conduction are relatively small and almost negligible,*** with the downer pyrolyzer under the same operating conditions,the heating rate is significantly increased in the cyclone *** analyzing the flow characteristics in the cyclone pyrolyzer,it is found that the region of high convective heat transfer rate coincides with that of natural cyclone ***,the final coal temperature increases with the increase of gas velocity and exists a maximum *** results can offer some qualitative understanding of the heat transfer behavior in the cyclone pyrolyzer.

关键词： Cyclone pyrolyzer Rapidly heating Heat convection Natural cyclone length CFD-DEM

Preparation of Polysulfonamide Porous Paper and Its Adsorption Properties

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Paper And Biomaterials 2019年第3期4卷 23-29页

作者： Sufeng zhang nan zhang Liwei qian Min Du Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development Key Laboratory of Paper Based Functional Materials of China National Light Industry National Demonstration Center for Experimental Light Chemistry Engineering Education Shaanxi University of Science and Technology

Three-dimensional porous paper was prepared by using polysulfonamide (PSA) fiber and pulp as the raw materials. The effect of PSA fiber to pulp ratios on the mechanical strength and adsorption properties (using methyl orange and rhodamine B dyes in their aqueous phase) of the paper were studied. The results showed that the tensile strength and elongation characteristics decreased as the PSA fiber to pulp ratio increased, while the tear strength increased. PSA paper showed good adsorption performance for both methyl orange and rhodamine B, with the adsorption process conforming to the pseudo-second-order and Langmuir isotherm models, indicating monolayer chemical adsorption. The study has provided an improved theoretical and scientific basis for the further development and application of PSA paper.

关键词： polysulfonamide paper mechanical strength adsorption property porous

Biological Databases for Hematology Research

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Genomics, Proteomics & Bioinformatics 2016年第6期14卷 333-337页

作者： qian zhang nan Ding Lu zhang Xuetong Zhao Yadong Yang Hongzhu Qu Xiangdong Fang CAS Key Laboratory of Genome Sciences and Information Beijing Institute of GenomicsChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China

With the advances of genome-wide sequencing technologies and bioinformatics approaches, a large number of datasets of normal and malignant erythropoiesis have been gener- ated and made public to researchers around the world. Collection and integration of these datasets greatly facilitate basic research and clinical diagnosis and treatment of blood disorders. Here we provide a brief introduction of the most popular omics data resources of normal and malignant hematopoiesis, including some integrated web tools, to help users get better equipped to perform common analyses. We hope this review will promote the awareness and facilitate the usage of public

关键词： resources in the hematology research.

ERBB4基因突变与ERBB4蛋白表达在黏膜和肢端黑色素瘤中的临床意义

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临床肿瘤学杂志 2012年第5期17卷 420-423页

作者：俎明孔燕斯璐梁龙代杰李强张虔男郭军北京大学肿瘤医院暨北京市肿瘤防治研究所肾癌黑色素瘤内科北京100142 恶性肿瘤发病机制及转化研究教育部重点实验室 100142

目的分析中国黏膜和肢端黑色素瘤中ERBB4基因突变、ERBB4蛋白表达情况及临床意义。方法收集59例中国黑色素瘤患者(33例黏膜黑色素瘤,26例肢端黑色素瘤)组织标本,采用PCR扩增和基因测序法检测ERBB4基因第18～23外显子突变,免疫组化法检测... 详细信息

目的分析中国黏膜和肢端黑色素瘤中ERBB4基因突变、ERBB4蛋白表达情况及临床意义。方法收集59例中国黑色素瘤患者(33例黏膜黑色素瘤,26例肢端黑色素瘤)组织标本,采用PCR扩增和基因测序法检测ERBB4基因第18～23外显子突变,免疫组化法检测ERBB4蛋白的表达。结果 ERBB4基因在黏膜黑色素瘤患者中突变率为12.1%(4/33),在肢端黑色素瘤中为7.7%(2/26);ERBB4蛋白在黏膜黑色素瘤中阳性率为84.8%(28/33),在肢端黑色素瘤中为76.9%(20/26)。ERBB4蛋白阳性表达患者的总生存期显著长于ERBB4蛋白阴性表达患者(P=0.011)。结论中国黏膜和肢端黑色素瘤患者的ERBB4基因突变率较高,检测ERBB4蛋白表达情况有助于判断其预后。

关键词：恶性黑色素瘤 ERBB4 基因突变预后

DNAzyme as a rising gene-silencing agent in theranostic settings

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Neural Regeneration Research 2022年第9期17卷 1989-1990页

作者： nan zhang Neuroscience Program Department of NeurologyHouston Methodist Research InstituteHoustonTXUSA

Decades of biochemical studies have advanced DNA beyond its primary role as genetic *** are single-stranded enzymatic DNA molecules that do not exist in *** are ideal candidates for gene silencing owing to their scalability by solid-phase synthesis(without batch variations),reprogrammability by directed evolution and local sequence alterations,compatibility with diverse delivery methods,and capability of achieving high catalytic turnover independent of any auxiliary *** these unique features,various artificially evolved DNAzymes have been employed as theranostic tools in designing biosensors and logic gates,RNA/DNA cleavage and ligation,phosphorylation and dephosphorylation,DNA photorepair,and peptide side-chain modifications,to name but a few(Ponce-Salvatierra et al.,2021).This perspective will focus on the functional aspects and therapeutic potentials of RNA-cleaving DNAzymes.

关键词： compatibility auxiliary batch

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莴笋新品种引种比较试验

黑龙江农业科学 2019年第10期 92-94页

作者：吴利晓王克雄张晓娟秦爱红关耀兵张倩男宁夏农林科学院固原分院

为筛选出适合宁南山区夏季种植的优良莴笋,从甘肃省农业科学院蔬菜研究所引进莴笋品种6个,搜集其他资源品种3个(独霸三夏、绿绿松圆叶和正兴抗热一号)莴笋新品种进行品比试验。结果表明:红莴笋QW1产量最低,为1 750.6 kg·667 m^-2,但产... 详细信息

为筛选出适合宁南山区夏季种植的优良莴笋,从甘肃省农业科学院蔬菜研究所引进莴笋品种6个,搜集其他资源品种3个(独霸三夏、绿绿松圆叶和正兴抗热一号)莴笋新品种进行品比试验。结果表明:红莴笋QW1产量最低,为1 750.6 kg·667 m^-2,但产值较高,为7 002.3元·667 m^-2,绿莴笋中QW8产量最高,达3 050.1 kg·667 m^-2,自行收集的3个品种中独霸三夏产量最高,达2 977.1 kg·667 m^-2,QW8是宁南山区最适宜夏季莴笋栽培的品种之一,其次为独霸三夏和红莴笋QW1。

关键词：莴笋品比试验植物学性状农艺性状产量产值

Differentiation of Four Pairs of Isomers by Comparing Their Relative Abundances of Fragment Ions

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Chemical Research in Chinese Universities 2010年第1期26卷 27-32页

作者： SUN Ming-qian LU Jian-qiu zhang Hong-gui zhang Qun-shu XIAO nan Rui-yun School of Chinese Materia Medica Beijing University of Chinese Medicine Beijing 100102 P R. China Developing Center of Science and Technique Beijing University of Chinese Medicine BeoTng 100029 P. R. China Pharmaceutical University of Shenyang Shenyang 110016 P R. China

Based on the LC-ESI/MSn technique, the four pairs of isomers of psoralen and isopsoralen, imperatorin and isoimperatorin, neohesperidin and hesperidin, naringin and narirutin were distinguished mainly by comparison of the relative abundances of their major fragment ions. Because of the effect of the hydrogen on the C8 of psoralen, the intensity of the fragment ion formed by the loss of CO2 was relatively increased. By comparing the abundance of the product ions formed by the loss of CO and 2CO, the isomers of psoralen and isopsoralen could be distinguished. This method can also be used to distinguish the isomers of imperatorin and isoimperatorin. Because of the different con- nected position between glucose and rhamnose, in the mass spectrum of neohesperidin, the relative abundances of ions at m/z 489 and 343 generated by the ring-cross cleavage of glycan were more than 10%, while in the mass spec- trum of hesperidin, they were all less than 1%. This approach can also be used to distinguish the isomers ofnaringin and narirutin. Although the fragmentation pathways were similar, according to the tiny difference of structure, the change of relative intensity of main fragment ions could be observed and it could be used to distinguish some isomers more accurately and quickly.

关键词： LC-MSn Relative abundance Isomer Product ion Generation opportunity

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左足颗粒细胞瘤一例

中国麻风皮肤病杂志 2025年第1期41卷 64-65页

作者：张雪燕张铭凯曹楠陈声利山东第一医科大学附属皮肤病医院山东济南250022 山东省皮肤病性病防治研究所山东济南250022

颗粒细胞瘤(granular cell tumor,GCT)是一种罕见软组织肿瘤,临床皮损不典型,好发于头颈部,发生于足部者少见。本患者左足跟角质性斑块20年,组织病理示:真皮内见大圆形细胞排列成巢状,细胞核小、居中,胞质内见嗜酸性颗粒。免疫组化:S-10... 详细信息

颗粒细胞瘤(granular cell tumor,GCT)是一种罕见软组织肿瘤,临床皮损不典型,好发于头颈部,发生于足部者少见。本患者左足跟角质性斑块20年,组织病理示:真皮内见大圆形细胞排列成巢状,细胞核小、居中,胞质内见嗜酸性颗粒。免疫组化:S-100(+)、SOX10(+)、NSE(+)、CD68(+)。诊断为颗粒细胞瘤,予以手术切除。

关键词：左足跟颗粒细胞瘤诊断

峨眉龙属(恐龙:蜥脚类)在重庆云阳中侏罗统沙溪庙组的发现（英文）

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古脊椎动物学报 2019年第2期57卷 105-116页

作者：谭超代辉贺建军张锋胡旭峰余海东李宁魏光飚彭光照叶勇张茜楠任鑫鑫尤海鲁重庆市地质遗迹保护与研究实验室重庆市地质矿产勘查开发局208水文地质工程地质队重庆400700 重庆市地质调查院重庆401122 自贡恐龙博物馆四川自贡643013 中国科学院古脊椎动物与古人类研究所中国科学院脊椎动物演化与人类起源重点实验室北京100044 中国科学院生物演化与环境卓越创新中心北京100044 中国科学院大学北京100049

形态学和比较研究表明重庆云阳普安中侏罗统沙溪庙组下段发现的一个脊椎可被归入蜥脚类恐龙峨眉龙属一未定种。该中部颈椎的椎体凹/腔构造非常发育以致其显得更加中空而不是坚实,同时该椎体的长度(不包括其前关节髁)和其后关节面长度和... 详细信息

形态学和比较研究表明重庆云阳普安中侏罗统沙溪庙组下段发现的一个脊椎可被归入蜥脚类恐龙峨眉龙属一未定种。该中部颈椎的椎体凹/腔构造非常发育以致其显得更加中空而不是坚实,同时该椎体的长度(不包括其前关节髁)和其后关节面长度和高度平均值的比值很高(5.05)。其他特征还包括:椎体长度约为脊椎全高的两倍,椎体腹面中嵴发育,椎体前关节突嵴板和前关节突间板以及椎体后关节突嵴板和后关节突间板间分别围成深而长的空隙,后关节突椎体横突凹的上半部内有一窝腔,上关节突长而低,向后延伸超出后关节突关节面,神经棘前1/3侧面凹陷,前后向长度约为椎体长度的一半。这一发现揭示了峨眉龙新的形态信息,普安恐龙化石点也代表了该属分布的最东缘。

关键词：重庆普安沙溪庙组蜥脚类峨眉龙属