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HPLC法测定健脾增食丸中盐酸小檗碱的含量

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齐鲁药事 2010年第4期29卷 204-205页

作者：宋青姜华刘宏明淄博市药品检验所山东淄博255086

目的用高效液相色谱法测定健脾增食丸中盐酸小檗碱的含量。方法采用高效液相色谱法,使用Shim-pack VP-ODS色谱柱(150mm×4.6mm,5μm),以乙腈-0.1%磷酸(23∶77)(每100mL加十二烷基磺酸钠0.1g)为流动相,检测波长:345nm,流速:1.0mL·min-1... 详细信息

目的用高效液相色谱法测定健脾增食丸中盐酸小檗碱的含量。方法采用高效液相色谱法,使用Shim-pack VP-ODS色谱柱(150mm×4.6mm,5μm),以乙腈-0.1%磷酸(23∶77)(每100mL加十二烷基磺酸钠0.1g)为流动相,检测波长:345nm,流速:1.0mL·min-1,柱温:35℃。结果盐酸小檗碱在0.05215～1.063μg范围内呈良好的线性关系,回归方程为Y=5.0×106X-233041(r=0.9996)。平均回收率为98.3%,RSD=1.5%。结论本法灵敏、准确、专属性强,回收率高,重现性好,可作为健脾增食丸中盐酸小檗碱的含量测定的检测方法。

关键词：盐酸小檗碱黄连健脾增食丸高效液相色谱法

Solar trough receiver with V-grooved light traps for efficiency improvement

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Science China Technological Sciences 2025年第1期 146-156页

作者： Bin liu qing LI Yu QIU School of Energy Science and Engineering Central South University

Parabolic trough collector is a promising technology for both domestic and industrial heat supplies. To enhance the collector efficiency, a modified trough receiver with dozens of V-grooved light traps incorporated into its lower-half absorber was introduced. For assessing the performance of this receiver, a solar-thermal-stress coupled model was established. Using this model, firstly, the effects of the V-grooved light traps were investigated. The results reveal that, compared to the conventional trough receiver, the modified trough receivers equipped with different traps can reduce their optical losses by 81.9–138.0 Wm-1（i.e., 15.0%–25.2%）, improving their optical efficiencies by 1.60%–2.69%. However, these traps also result in increased thermal loss from the receiver. Therefore, there is no single optimal modified trough receiver that consistently outperforms all other receivers across all possible conditions. Nonetheless, the MTR30-3 and MTR60-3 receivers emerge as the optimized choices due to their better solar-thermal performance. Subsequently, performance evaluation reveals that the two optimized receivers can enhance the receiver efficiencies within the typical solar irradiance range by 0.02%–2.65% and 0.05%–1.70% when the inlet fluid temperatures are below 488 and 523 K, respectively. Consequently, the collector efficiencies can be improved by 0.02%–2.49% and 0.05%–1.60%, respectively. Additionally, thermal stress analysis verifies that the two optimized receivers remain within safe limits under all typical conditions. Given that the heating temperature of a typical solar collector for domestic or industrial heat supply is typically below 523 K, the integration of the two optimized receivers has the capability to effectively enhance the overall collector efficiency.

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Facile synthesis of the dodecahydridododecaborate (B12H122-) from borane Lewis base adducts

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Science China Chemistry 2025年

作者： Yi Jing Xin-Ran liu Xing-hua Wang Hui Han Sha-Sha Liang Xi-Meng Chen Dong-Hui Wei Lai-Sheng Wang Xue-Nian Chen College of Chemistry Zhengzhou University School of Chemistry and Chemical Engineering Henan Key Laboratory of Boron Chemistry and Advanced MaterialsHenan Normal University Department of Chemistry Brown University

Polyhedral boranes are a class of well-known boron molecular clusters widely used in energy,chemistry,medicine,and materials science because of their unique physical and chemical *** efforts have been made in the past decades to find more effective synthetic methods for this important class of boron ***,existing synthetic methods suffer from low efficiency and low ***,we report a facile one-pot synthesis of[（CH3）3S]2B12H12with moderate yields at mild *** mechanisms for the multi-step chemoselective synthesis of B12H122-without other by-products are elucidated based on theoretical results and our previous *** Lewis base used in B–H bond condensation reaction,which acts as a hydrogen or to balance the newly generated polyhedral borane charges,is proposed and studied in *** current study has led to a more effective and selective synthetic method for B12H122-and has also implicated the syntheses of other new polyhedral boranes.

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达芬奇机器人辅助下腹腔镜与普通腹腔镜术中二氧化碳气腹对机体的影响

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检验医学与临床 2017年第A1期14卷 80-82页

作者：卢斌傅强张庆华刘俊乐陕西省西安市长安区医院麻醉科 710100 解放军总医院麻醉手术中心北京100853 陕西省西安市高新医院麻醉科 710075 福建医科大学附属协和医院麻醉科福建福州350001

目的比较达芬奇机器人辅助下腹腔镜与普通腹腔镜术中CO2气腹对机体的影响.方法选择择期行达芬奇机器人辅助下腹腔镜手术（D组）20例,择期行普通腹腔镜手术患者（R组） 20 例,分别观察全麻机械通气后气腹前（T0）、气腹后30 min（T1）... 详细信息

目的比较达芬奇机器人辅助下腹腔镜与普通腹腔镜术中CO2气腹对机体的影响.方法选择择期行达芬奇机器人辅助下腹腔镜手术（D组）20例,择期行普通腹腔镜手术患者（R组） 20 例,分别观察全麻机械通气后气腹前（T0）、气腹后30 min（T1）、60 min（T2）、120 min（T3）和放气后10 min（T4）、清醒气管导管拔除10 min（T5）时间点 MAP、HR、PETCO2、气道峰压（Ppeak）、动脉血气,并计算 CO2排出量（VCO2）、动脉血-呼气末CO2差值（PaCO2-PETCO2）.结果两组气腹后各时间点 Ppeak、PaCO2、PETCO2、PaCO2-PETCO2和VCO2 均较气腹前显著增高,并随着气腹时间的延长而持续缓慢增高（P〈0.01）.与 R组相比,D组气腹后PETCO2、PaCO2、VCO2的增加更加明显,差异有统计学意义（P〈0.05）.结论与普通腹腔镜手术相比,达芬奇机器人辅助腹腔镜手术气腹期间CO2吸收更显著;PETCO2和血气监测在达芬奇机器人辅助腹腔镜手术应列为常规.

关键词：达芬奇机器人腹腔镜手术二氧化碳气腹

新农人形象的数字生产研究——基于抖音短视频场域的内容考察

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新闻与传播评论 2025年第1期78卷 21-34页

作者：冉华刘沛彤武汉大学媒体发展研究中心、武汉大学新闻与传播学院湖北武汉430072 武汉大学新闻与传播学院湖北武汉430072

随着全面乡村振兴的深入推进,社交媒体在中国乡村的普及不仅大幅缩小了城乡数字鸿沟,更催生城乡数字交往中的新质生产力,塑造新的生产关系与生活样态。基于抖音社交平台,通过对短视频中新农人形象再生产数据的内容分析,可深入考察抖音... 详细信息

随着全面乡村振兴的深入推进,社交媒体在中国乡村的普及不仅大幅缩小了城乡数字鸿沟,更催生城乡数字交往中的新质生产力,塑造新的生产关系与生活样态。基于抖音社交平台,通过对短视频中新农人形象再生产数据的内容分析,可深入考察抖音如何重构城乡交往的整体现状及其形塑过程。研究发现,抖音等新媒体能够催生青年人反哺中老年人一起建立城乡双向奔赴的交往场域。尤其是一批青年新生代农民工,开始从城市返乡,他们积极投身数字乡村建设,通过创意化表演重塑了新农人形象。这种行为充分肯定返乡生活并重新定义乡村身份,在中国交往场域实践中占据核心地位。在这一过程中,抖音作为技术与社会互动的中介,在视频内容展演上具有历时性维度和包容特性,并成为跨越城乡鸿沟、促进城乡互动的重要传播特征。此外,抖音等社交媒体用户,通过在视频里扮演中介角色再生产出数字时代的中国城乡社会网络交往媒介,在构建积极城乡交往的媒介形象以及搭建新传播体系方面提供实践方式与理论指引。

关键词：新质生产力城乡鸿沟新农人抖音社交平台交往场域

兔源肺炎克雷伯氏菌和大肠埃希氏菌的分离鉴定及小鼠感染试验

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动物医学进展 2025年第1期46卷 55-61页

作者：张鲁星石晴晴陶梦珂李苗苗赵恒胡功政吴华刘建华河南农业大学动物医学院河南郑州450000

为确定某规模化兔场仔兔呼吸道感染合并腹泻引起死亡的原因,无菌采集病兔气管、肺、肝组织进行病毒和细菌检测。通过细菌分离培养、革兰氏染色、生化鉴定、16S rRNA序列同源性比对分析,确定分离菌株种属。通过药物敏感性试验、耐药基因... 详细信息

为确定某规模化兔场仔兔呼吸道感染合并腹泻引起死亡的原因,无菌采集病兔气管、肺、肝组织进行病毒和细菌检测。通过细菌分离培养、革兰氏染色、生化鉴定、16S rRNA序列同源性比对分析,确定分离菌株种属。通过药物敏感性试验、耐药基因检测及动物回归对分离菌株的耐药性和致病性进行分析。结果显示,病毒检测结果均为阴性;从同一只仔兔的肺脏、气管中分离得到2株肺炎克雷伯氏菌,分别将其命名为KF1、KQ2,从肝脏中分离得到1株大肠埃希氏菌并将其命名为EG3。药敏试验结果显示,菌株KF1、KQ2和EG3均对黏菌素和氨苄青霉素钠耐药,对阿米卡星和氟苯尼考敏感。3株菌均检出耐药基因mcr-1和bla TEM。动物致病性试验显示,KF1组小鼠5 h后死亡50%,24 h全部死亡;混合组小鼠12 h后全部死亡;KQ2和EG3组48 h全部死亡。以上研究表明,大肠埃希氏菌和肺炎克雷伯氏菌的混合感染是引起仔兔死亡的主要原因,3株分离株单独及混合感染均能引起试验小鼠死亡。

关键词：兔肺炎克雷伯氏菌大肠埃希氏菌分离鉴定耐药基因

Sine oculis homeobox homolog family function in gastrointestinal cancer:Progression and comprehensive analysis

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World Journal of Clinical Oncology 2025年第1期16卷 10-24页

作者： Yang-Zheng Lan Zheng Wu Wen-Jia Chen Xin-Ning Yu hua-Tao Wu Jing liu Department of The Breast Center Cancer Hospital of Shantou University Medical CollegeShantou 515041Guangdong ProvinceChina Department of General Surgery First Affiliated Hospital of Shantou University Medical CollegeShantou 515041Guangdong ProvinceChina

The sine oculis homeobox homolog(SIX)family,a group of transcription factors characterized by a conserved DNA-binding homology domain,plays a critical role in orchestrating embryonic development and organogenesis across various organisms,including *** six distinct members,from SIX1 to SIX6,each member contributes uniquely to the development and differentiation of diverse tissues and organs,underscoring the versatility of the SIX *** or mutations in SIX genes have been implicated in a spectrum of developmental disorders,as well as in tumor initiation and progression,highlighting their pivotal role in maintaining normal developmental trajectories and cellular *** to target the transcriptional complex of the SIX gene family have emerged as a promising strategy to inhibit tumor *** the development of inhibitors targeting this gene family is still in its early stages,the significant potential of such interventions holds promise for future therapeutic ***,this review aimed to comprehensively explore the advancements in understanding the SIX family within gastrointestinal cancers,focusing on its critical role in normal organ development and its implications in gastrointestinal cancers,including gastric,pancreatic,colorectal cancer,and hepatocellular *** conclusion,this review deepened the understanding of the functional roles of the SIX family and explored the potential of utilizing this gene family for the diagnosis,prognosis,and treatment of gastrointestinal cancers.

关键词： Sine oculis homeobox homolog Gastrointestinal cancer Transcription factor Development Regulation Diagnosis Therapeutics

Symmetry-enforced Weyl phonons

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npj Computational Materials 2020年第1期6卷 886-891页

作者： qing-Bo liu Yuting Qian hua-hua Fu Zhijun Wang School of Physics and Wuhan National High Magnetic Field Center Huazhong University of Science and Technology430074 WuhanChina Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of Sciences100190 BeijingChina University of Chinese Academy of Sciences 100049 BeijingChina

In spinful electronic systems,time-reversal symmetry makes that all Kramers pairs at the time-reversal-invariant momenta are Weyl points(WPs)in chiral ***,we find that such symmetry-enforced WPs can also emerge in bosonic systems(*** and photons)due to nonsymmorphic *** demonstrate that for some nonsymmorphic chiral space groups,several high-symmetry k-points can host only WPs in the phononic systems,dubbed symmetry-enforced Weyl phonons(SEWPs).

关键词： symmetry crystals forced

Genome-wide characterization and expression analysis of WRKY family genes during development and resistance to Colletotrichum fructicola in cultivated strawberry(Fragaria×ananassa Duch.)

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Journal of Integrative Agriculture 2022年第6期21卷 1658-1672页

作者： ZOU Xiao-hua DONG Chao liu Hai-ting GAO qing-hua Shanghai Key Laboratory of Protected Horticultural Technology Forestry and Fruit Tree Research InstituteShanghai Academy of Agricultural Sciences(SAAS)Shanghai 201403P.R.China

Based on the recently published whole-genome sequence of cultivated strawberry ’Camarosa’, in this study, 222FaWRKY genes were identified in the ’Camarosa’ genome. Phylogenetic analysis showed that the 222 FaWRKY candidate genes were classified into three groups, of which 41 were in group Ⅰ, 142 were in group Ⅱ, and 39 were in group Ⅲ. The 222 FaWRKY genes were evenly distributed among the seven chromosomes. The exon–intron structures and motifs of the WRKY genes had evolutionary diversity in different cultivated strawberry genomes. Regarding differential expression, the expression of FaWRKY133 was relatively high in leaves, while FaWRKY63 was specifically expressed in roots. FaWRKY207, 59, 46, 182, 156, 58, 39, 62 and 115 were up-regulated during achene development from the green to red fruit transition. FaWRK181, 166 and 211 were highly expressed in receptacles at the ripe fruit stage. One interesting finding was that Fa WRKY179 and 205 were significantly repressed after Colletotrichum fructicola inoculation in both ’Benihoppe’ and ’Sweet Charlie’ compared with Mock. The data reported here provide a foundation for further comparative genomics and analyses of the distinct expression patterns of FaWRKY genes in various tissues and in response to C. fructicola inoculation.

关键词： Fragaria×ananassa FaWRKY Colletotrichum fructicola structure evolution