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Geochronology,Petrogenesis and Tectonic Setting of the Late Jurassic I-type Granites in the North Qinling Orogenic Belt,Central China

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Acta Geologica Sinica(English Edition) 2023年第4期97卷 1132-1149页

作者： huang yanna LI Dunpeng XIAO Aifang XU Songming College of Zijin Geology and Mining Fuzhou UniversityFuzhou 350108China

The North Qinling Orogenic Belt(NQOB)is a composite orogenic belt in central China.It started evolving during the Meso-Neoproterozoic period and underwent multiple stages of plate subduction and collision before entering intra-continental orogeny in the Late Triassic.The Meso-Cenozoic intra-continental orogeny and tectonic evolution had different responses in various terranes of the belt,with the tectonic evolution of the middle part of the belt being particularly controversial.The granites distributed in the Dayu and Kuyu areas in the middle part of the NQOB can provide an important window for revealing the geodynamic mechanisms of the NQOB.The main lithology of Dayu and Kuyu granites is biotite monzogranite,and the zircon U-Pb dating yielded intrusive ages of 151.3±3.4 Ma and 147.7±1.5 Ma,respectively.The dates suggest that the biotite monzogranite were formed at the end of the Late Jurassic.The whole-rock geochemistry analysis shows that the granites in the study areas are characterized by slightly high SiO_(2)(64.50-68.88 wt%)and high Al_(2)O_(3)(15.12-16.24 wt%)and Na_(2)O(3.55-3.80 wt%)contents.They are also enriched in light rare earth elements,large ion lithophile elements(e.g.,Ba,K,La,Pb and Sr),and depleted in high field strength elements(HFSEs)(e.g.,Ta,Nb,P and Ti).Additionally,the granites have weakly negative-slightly positive Eu anomalies(δEu=0.91-1.19).Zircon Lu-Hf isotopic analysis showedε_(Hf)(t)=-6.1--3.8,and the two-stage model age is T_(2DM(crust))=1.5-1.6 Ga.The granites in the study areas are analyzed as weak peraluminous high-K calc-alkaline I-type granites.They formed by partial melting of the thickened ancient lower crust,accompanied by the addition of minor mantle-derived materials.During magma ascent,they experienced fractional crystallization,with residual garnet and amphibole for a certain proportion in the magma source region.Comprehensive the geotectonic data suggest that the end of the Late Jurassic granite magmatism in the Dayu and Kuyu areas represents a compression-extension tra

关键词： partial melting tectonic transition I-type granite Late Jurassic North Qinling Orogenic Belt

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动物肌内脂肪沉积的影响因素及其分子机制

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动物营养学报 2024年第3期36卷 1502-1514页

作者：李银韦洋洋蒋钦杨黄艳娜广西大学动物科学技术学院南宁530004

肌内脂肪(IMF)指在肌肉内、肌纤维间所沉积的脂肪,其含量与肌肉的多汁度、剪切力、嫩度以及肉质显著正相关,因此合理的IMF含量将有助于改善肉品的质量和提高其风味。IMF生成的过程涉及复杂且高度协调的基因表达调控程序,受多种因素影响... 详细信息

肌内脂肪(IMF)指在肌肉内、肌纤维间所沉积的脂肪,其含量与肌肉的多汁度、剪切力、嫩度以及肉质显著正相关,因此合理的IMF含量将有助于改善肉品的质量和提高其风味。IMF生成的过程涉及复杂且高度协调的基因表达调控程序,受多种因素影响。因此,本文综述了影响动物IMF沉积的转录因子、关键代谢酶、信号通路以及非编码RNA。研究显示,转录因子在调节脂肪细胞分化和脂肪合成的过程中起着重要作用;酶催化反应则介导了脂肪生成和降解的关键步骤;此外,通过调控特定信号通路和非编码RNA的表达,也能够对IMF沉积进行调控。深入了解和运用这些分子机制对于肉制品质量的提升和生产优质肉制品具有重要意义。本综述为进一步研究和运用这些分子机制提供了参考依据,以期改善肉制品的质量,满足消费者对优质肉制品的需求。

关键词：肌内脂肪肉品质转录因子信号通路酶非编码RNA

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Construction Features of Small Roadside Parks in Tropical Area——A Case Study of Zhanjiang City

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Journal of Landscape Research 2013年第5期5卷 14-16页

作者： huang yanna WU Liuping Department of Landscape Architecture Guangdong Ocean University

Accessibility and flexibility of small roadside parks make them significant transitional spaces in urban landscape environment. Three representative small parks in Zhanjiang City, a typical tropical city in south China, were selected to analyze their location features, spatial processing, demonstration of regional landscapes and recreational characteristics. It was proposed that construction of small roadside parks in tropical area should put human needs on the priority, present regional features of tropical garden landscapes, and focus on inheritance and innovation of regional cultures.

关键词： Small roadside parks Recreational features Regional landscapes Tropical gardens Zhanjiang City

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Plant Landscape Design Language of Small Street Parks in Tropical Coastal Regions:A Case Study of Zhanjiang City

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Journal of Landscape Research 2017年第2期9卷 63-66页

作者： huang yanna LIU Jinfang Guangdong Ocean University

Small urban street parks play an irreplaceable role in protecting ecological environment of cities and beautifying living spaces of citizens, in these parks plant is an essential landscaping element that can not only improve environmental quality, but also provide visual enjoyment for viewers. There are many small street parks in Zhanjiang City, however, plant landscapes in such parks lack in regional characteristics because of blind copy and random planting. By analyzing plant landscapes in typical street parks in Zhanjiang, and borrowing the theoretical research framework of linguistics, this paper concluded the vocabulary, sentence,chapter and grammatical rules of plant landscape design, in order to explore new methods for the plant landscape design of small parks in tropical coastal regions.

关键词： Landscape architecture Plant landscape Small street park Landscape design language Tropical coastal region

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罗汉果甜苷促进高脂饮食诱导小鼠的脂质代谢

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基因组学与应用生物学 2024年第5期43卷 828-838页

作者：王永浪韦义荣韦丽丽何翠梅徐慧凌黄艳娜蒋钦杨广西大学动物科学技术学院南宁530004

为探究罗汉果甜苷对高脂饮食诱导的小鼠(Mus muscolus)生长性能及脂质代谢的影响,实验选取40只初始体重约为14 g的21日龄雄性KM小鼠,随机分为4个处理组(n=10只/组),即对照组(CK)、低浓度甜苷组(LSG)、中浓度甜苷组(MSG)和高浓度甜苷组(H... 详细信息

为探究罗汉果甜苷对高脂饮食诱导的小鼠(Mus muscolus)生长性能及脂质代谢的影响,实验选取40只初始体重约为14 g的21日龄雄性KM小鼠,随机分为4个处理组(n=10只/组),即对照组(CK)、低浓度甜苷组(LSG)、中浓度甜苷组(MSG)和高浓度甜苷组(HSG)。预实验7 d,正式实验56 d,实验结束后逐只称重并测定血糖浓度,同时采集称量棕色脂肪、皮下脂肪、腹部脂肪和肝脏等组织脏器的重量;选取棕色脂肪、皮下脂肪石蜡切片进行HE染色以及对肝组织石蜡切片进行油红O染色;通过实时定量PCR(real-time quantitative PCR,RT-qPCR)检测UCP1、PRDM16、PGC-1α及脂肪代谢信号通路各相关基因(AMPK、PPARγ、C/EBPα)在CK组和HSG组的棕色脂肪、腹部脂肪和皮下脂肪中的表达情况。结果表明,灌胃100、300、600 mg.kg-1.d-1的罗汉果甜苷溶液可降低高脂饮食诱导小鼠的体重、肝重及血糖,并使高脂饮食诱导小鼠棕色脂肪、皮下脂肪和肝脏脂肪的沉积得到改善。RT-qPCR表明,HSG组的棕色脂肪、腹部脂肪和皮下脂肪中白色脂肪棕色化相关基因(UCP1、PRDM16、PGC-1α、AMPK、PPARγ、C/EBPα)的mRNA相对表达量显著上调(P<0.05)。本研究可为罗汉果甜苷及其相关产业的发展提供重要科学依据,为进一步解析罗汉果甜苷调控脂质代谢的分子机制提供理论参考。

关键词：罗汉果甜苷小鼠脂质代谢脂肪类型转化

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努比亚山羊Rheb基因克隆、生物信息学分析及真核表达载体构建

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中国畜牧兽医 2024年第5期51卷 1819-1826页

作者：邹菊红莫智化刘雨帆邹剑伟卢俊何海恩王璠黄艳娜蒋钦杨广西大学动物科学技术学院南宁530000

【目的】研究旨在对努比亚山羊大脑富集Ras同源物(Ras homolog enriched in brain,Rheb)基因进行克隆和分析,并构建其真核表达载体,为进一步揭示Rheb对努比亚山羊骨骼肌调控的分子机理奠定基础。【方法】试验采用RT-PCR方法从努比亚山... 详细信息

【目的】研究旨在对努比亚山羊大脑富集Ras同源物(Ras homolog enriched in brain,Rheb)基因进行克隆和分析,并构建其真核表达载体,为进一步揭示Rheb对努比亚山羊骨骼肌调控的分子机理奠定基础。【方法】试验采用RT-PCR方法从努比亚山羊背最长肌组织中扩增Rheb基因,经琼脂糖凝胶电泳及测序验证正确后进行生物信息学分析,同时构建该基因真核表达载体,转染细胞后进行实时荧光定量PCR检测来验证所构建载体的正确性。【结果】努比亚山羊Rheb基因编码区序列长度为555 bp,编码184个氨基酸,Rheb蛋白分子式为C 910 H 1456 N 236 O 279 S 6,分子质量为20359.34 u,原子总数为2887,理论等电点为5.93。Rheb蛋白属于稳定的亲水性蛋白,不包含跨膜结构域。蛋白二级结构预测结果显示,努比亚山羊Rheb蛋白中α-螺旋、β-转角、延伸链和无规则卷曲分别占40.76%、7.07%、22.83%和29.35%。构建的真核表达载体pcDNA3.1-Rheb转染山羊骨骼肌细胞后,与空载体组相比,Rheb基因表达量极显著升高(P<0.01)。【结论】本试验成功克隆努比亚山羊Rheb基因编码区序列,并构建pcDNA3.1-Rheb真核表达载体,这为深入理解Rheb基因在努比亚山羊肌肉中的作用提供了理论支持。

关键词：努比亚山羊 Rheb基因生物信息学骨骼肌细胞真核表达载体

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A review of concrete bridge surface defect detection based on deep learning

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Optoelectronics Letters 2024年

作者： LIAO yanna huang Chaoyang Abdel-Hamid Soliman School of Electronic Engineering Xi'an University of Posts and Telecommunications School of Digital Technology Innovation and Business Staffordshire University

The detection of surface defects in concrete bridges using deep learning is of significant importance for reducing operational risks， saving maintenance costs， and driving the intelligent transformation of bridge defect detection. In contrast to the subjective and inefficient manual visual inspection， deep learning-based algorithms for concrete defect detection exhibit remarkable advantages， emerging as a focal point in recent research. This paper comprehensively analyzes the research progress of deep learning algorithms in the field of surface defect detection in concrete bridges in recent years. It introduces the early detection methods for surface defects in concrete bridges and the development of deep learning. Subsequently， it provides an overview of deep learning-based concrete bridge surface defect detection research from three aspects: image classification， object detection， and semantic segmentation. The paper summarizes the strengths and weaknesses of existing methods and the challenges they face. Additionally， it analyzes and prospects the development trends of surface defect detection in concrete bridges.

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EGCG对热应激巴马香猪肠道热休克蛋白以及肠道屏障相关基因表达的影响

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基因组学与应用生物学 2023年第9期42卷 941-951页

作者：韦崇万杨豹王倩蒋钦杨黄艳娜广西大学动物科学技术学院南宁530004

本研究旨在探究表没食子儿茶素没食子酸酯(epigallocatechin gallate,EGCG)对于热应激巴马香猪小肠中热休克蛋白(heat shock proteins,HSPs)、紧密连接蛋白(tight junction proteins,TJPs)和Toll样受体4(Toll-like receptor 4,TLR-4)等基因表达的影响。25头平均体重为(34.28±1.19)kg的8月龄雄性巴马香猪被随机分成5个处理组,包括TN组(22℃,自由采食)、PF组(22℃,采食量配对)、HS0组(35℃,自由采食)、HS250组(35℃,自由采食+0.025%EGCG)和HS500组(35℃,自由采食+0.05%EGCG)。预实验7 d,正式实验28 d。实验结束后进行屠宰并采集小肠组织样品,检测各组小肠中HSPs、TJPs和TLR-4基因的表达。结果表明:(1)热应激显著增加了小肠中热休克蛋白70(heat shock protein 70,HSP70)和热休克蛋白90(heat shock protein 90,HSP90)基因的表达量,而添加EGCG均显著降低了它们的相对表达量,且0.05%EGCG作用效果优于0.025%EGCG。(2)热应激显著降低了小肠中膜闭锁连接蛋白-1(zonula occluden-1,ZO-1)、闭合蛋白3(Claudin-3)、咬合蛋白(Occludin)和黏蛋白2(mucin 2,Muc-2)基因的相对表达量,而添加EGCG显著增加了它们的相对表达量,且0.05%EGCG作用效果优于0.025%EGCG。(3)热应激显著增加了肠道中TLR-4基因的相对表达量,而添加EGCG显著降低了其相对表达量,且0.05%EGCG作用效果优于0.025%EGCG。以上结果说明,热应激显著增加了巴马香猪肠道中HSP70和HSP90基因的表达,并可能通过破坏它们的紧密连接而增加TLR-4基因的表达,从而影响肠道屏障功能;而热应激猪日粮中添加EGCG可以降低HSPs基因的表达,减弱热应激可能导致的肠道屏障受损,提高肠道中TJPs基因的表达以及降低TLR-4基因的表达,从而缓解热应激,且0.05%EGCG作用效果优于0.025%EGCG。本研究为今后开发EGCG作为一种改善热应激巴马香猪肠道健康的绿色安全饲料添加剂提供了科学依据。

关键词： EGCG 热应激热休克蛋白肠道屏障相关基因

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