Foreign Landscape Architecture History Teaching by Introducing Three-dimensional Graphic Analysis:A Case Study of Italian Renaissance Gardens     

YANG Xin 《Journal of Landscape Research》2021,(2):95-98

Taking contents of Italian Renaissance gardens in the course Foreign Landscape Architecture History as an example,this paper introduces case teaching method and analyzes application of three-dimensional graphic analysis method in case teaching in detail,aiming at typical cases of Italian Renaissance gardens,namely,Villa Medici,Fiesole and Villa d’Este,Tivoli.Three-dimensional graphic analysis can help students form intuitive feeling of terrain and space,further understand the typical gardening techniques of foreign gardens,so as to improve the teaching effect of landscape architecture history course.  相似文献   

优质粳稻新品种‘常农粳11号’的选育及机插高产栽培技术   总被引：1，自引：0，他引：1  

柯瑷  赵品恒  端木李玲  季向东  王雪刚  王小虎  俞良  李标  兰国防  潘斌清  孙菊英 《作物研究》2018,(2)

‘常农粳11号’是江苏省常熟市农业科学研究所育成的迟熟中粳类型品种,具有稻米品质优、高产稳产、综合抗性好、熟期适宜等特点。介绍了‘常农粳11号’的选育经过、特性特征、机插栽培技术要点以及品种适宜种植区域。  相似文献   

China's environmental challenges. A green fervor sweeps the Qinghai-Tibetan Plateau     

Xin H 《Science (New York, N.Y.)》2008,321(5889):633-635

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Zeng Yi profile. Mortality survey offers mixed message     

Xin H 《Science (New York, N.Y.)》2008,321(5893):1155

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实现数据处理自动化的一种有效方式——江西省林业基本情况数据库     

陈Xin  李园生 《江西林业科技》1998,(1):24-25

数据库是实现数据处理自动化的核心。本文具体介绍了《江西省林业基本情况数据库》的开发应用环境、软件设计、功能及数据库包含的信息栏目。  相似文献   

Effects of land-use patterns on soil microbial diversity and composition in the Loess Plateau,China     

ZHANG Jian  GUO Xiaoqun  SHAN Yujie  LU Xin  CAO Jianjun 《干旱区科学》2024,(3):415-430

In the Loess Plateau of China, land-use pattern is a major factor in controlling underlying biological processes. Additionally, the process of land-use pattern was accompanied by abandoned lands, potentially impacting soil microbe. However, limited researches were conducted to study the impacts of land-use patterns on the diversity and community of soil microorganisms in this area. The study aimed to investigate soil microbial community diversity and composition using high-throughput deoxyribonu...  相似文献   

Polyphosphate Accelerates Transformation of Nonstructural Carbohydrates to Improve Growth of ppk-Expressing Transgenic Rice in Phosphorus Deficiency Culture     

ZHU Jinling  WEI Ruping  WANG Xin  ZHENG Chaoqun  WANG Mengmeng  YANG Yicheng  YANG Liuyan 《水稻科学》2023,30(3):235-247

Crop yield and quality are often limited by the amount of phosphate fertilizer added to infertile soils, a key limiting factor for sustainable development in modern agriculture. The polyphosphate kinase(ppk) gene-expressing transgenic rice with a single-copy line(ETRS) is constructed to improve phosphate fertilizer utilization efficiency for phosphorus resource conservation. To investigate the potential mechanisms of the increased biomass in ETRS in low phosphate culture, ETRS was cultivated in ...  相似文献   

THE STUDY OF DELAMINATION IN THE STRUCTURAL STEELS     

Xin Yide Hu Yisu 《保鲜与加工》1988,(4)

The influence of temperature and stress state on delamination in the pipe-line steel has been studied by tensile tests at different temperature and stress states. It is found that the' delamination always takes place along the centerline segregation band in pipe-line steel produced by continuous casting and then controlled rolling. At room temperature, the delamination appears to be caused by micrbvoid nucleation and coalecence. And the delamination appears to be caused by the cleavage cracking along (100) plane at low temperatur.e. The best way to eliminate the delamination is to reduce the degree of centerline segregation.  相似文献   

Functional identification of phenazine biosynthesis genes in plant pathogenic bacteria Pseudomonas syringae pv. tomato and Xanthomonas oryzae pv. oryzae     

LI Wen  XU You-ping  Jean-Pierre Munyampundu  XU Xin  QI Xian-fei  GU Yuan  CAI Xin-zhong 《中国农业科学(英文版)》2016,(4):812-821

Phenazines are secondary metabolites with broad spectrum antibiotic activity and thus show high potential in biological control of pathogens.In this study,we identified phenazine biosynthesis（phz）genes in two genome-completed plant pathogenic bacteria Pseudomonas syringae pv.tomato（Pst）DC3000 and Xanthomonas oryzae pv.oryzae（Xoo）PXO99^A.Unlike the phz genes in typical phenazine-producing pseudomonads,phz homologs in Pst DC3000 and Xoo PXO99^A consisted of phzC/D/E/F/G and phzC/E1/E2/F/G,respectively,and the both were not organized into an operon.Detection experiments demonstrated that phenazine-1-carboxylic acid（PCA）of Pst DC3000 accumulated to 13.4μg L^-1,while that of Xoo PXO99^A was almost undetectable.Moreover,Pst DC3000 was resistant to 1 mg mL^-1PCA,while Xoo PXO99^A was sensitive to50μg mL^-1PCA.Furthermore,mutation of phzF blocked the PCA production and significantly reduced the pathogenicity of Pst DC3000 in tomato,while the complementary strains restored these phenotypes.These results revealed that Pst DC3000 produces low level of and is resistant to phenazines and thus is unable to be biologically controlled by phenazines.Additionally,phz-mediated PCA production is required for full pathogenicity of Pst DC3000.To our knowledge,this is the first report of PCA production and its function in pathogenicity of a plant pathogenic P.syringae strain.  相似文献   

Exploring the effectiveness of in ovo feeding of vitamin C based on the embryonic vitamin C synthesis and absorption in broiler chickens     

Yufei Zhu  Jianfei Zhao  Chenxu Wang  Fei Zhang  Xinhuo Huang  Zhouzheng Ren  Xin Yang  Yanli Liu  Xiaojun Yang 《畜牧与生物技术杂志(英文版)》2022,(1):280-287

Background:Many researches about in ovo feeding(IOF)of vitamin C(VC)are gradually carried out to explore physiological development in chicken,but little studies focus on VC synthesis capacity of the embryo itself,the selection of injection site and the effectiveness of IOF of VC.This study aims to explore the above problems.Results:Kidney and yolk sac were the main organs for VC synthesis and L-gulonolactone oxidase(GLO)expression was lower during pre-hatch development than that during post-hatch development.Sodium-dependent vitamin C transporter 1(SVCT1)expression was increased continuously in yolk sac from embryonic age 19(E19)to post-hatch day 1(D1)and in intestine(duodenum,jejunum and ileum)from E17 to D1.Plasma VC content was higher at D1 than that at D21 and D42.IOF of VC significantly reduced GLO expression in liver,kidney and yolk sac as well as SVCT1 expression in duodenum,jejunum and ileum,but increased the VC content in plasma,brain,kidney and liver.In addition,IOF of VC obviously reduced the embryonic morality and increased the hatchability under heat stress.Conclusions:This study suggested that IOF of VC at E11 in yolk was effective for embryonic VC supplementation.These findings provide a theoretical reference about the method of embryonic VC supplementation and effective methodology on embryonic VC nutrition in broiler chickens.  相似文献