论文部分内容阅读
受到影响.
不同土壤水分条件下107杨幼苗(Populus euramericana cv.“74/76”)秋季光响应研究
【摘 要】
：
受到影响.
【机 构】
：
北京林业大学
【出 处】
：
西北林学院学报
【发表日期】
：
2004年期
其他文献
为了更好地确定蓖麻秆人造板的制造工艺,研究了蓖麻秆及其不同部位的pH和酸碱缓冲容量.利用SAS软件分析了蓖麻秆的酸碱性与抽提物含量、灰分含量的相关关系.结果表明,蓖麻秆
Ionic liquids as green solvents have shown important application in the extraction and separation of nonferrous metals. The new application perspective, the imp
Periodical attenuation of Al(OH)3 particles from seed precipitation in seeded sodium aluminate solut
Periodical attenuation of particles, which interferes seriously the normal alumina production, exists in Bayer process. In order to solve this problem, the rule
Pores, microcracks and density of plasma sprayed Cr2O3 coatings before and after high-intensity pulsed ion beam (HIPIB) irradiation were investigated using the
Effects of whisker surface treatment on microstructure and properties of Al18B4O33w/6061Al composite
6061Al matrix composites reinforced by ZnO-coated Al18B4O33 whiskers were fabricated by a semi-solid mechanical stirring technique. The effects of ZnO coating o
Microstructure and mechanical properties of Mg-6Al-0.3Mn-xY alloys prepared by casting and hot rolli
Mg-6Al-0.3Mn-xY (x=0, 0.3, 0.6 and 0.9, mass fraction, %) magnesium alloys were prepared by casting and hot rolling process. The influence of yttrium on microst
Catalytic performance and kinetics of Au/γ-Al2O3 catalysts for low-temperature combustion of light a
Au/γ-Al2O3 catalysts were prepared by deposition-precipitation method for the catalytic combustion of low concentration alcohol streams (methanol, ethanol, iso
Dy3+doped Mn-Zn ferrites Mn0.3Zn0.7Fe2-xDyxO4(x=0,0.01,0.02,0.03,0.04)were prepared by the conventional solid-state reaction.The crystal structure,surface morph
This study aims to determine the principal electrochemical characteristics of the electrodeposition of cerium metal from molten fluoride systems.The cathodic pr
研究了烤房纳米功能涂料在密集烤房和普改密烤房中的应用效果.结果表明,使用烤房纳米功能涂料平均每房烟可缩短烘烤时间14.89 h;每kg干烟节煤0.69 kg,节电0.14度;降低烤烟的