不同用量底肥对果蔗产量和品质的影响研究初报

试验结果表明:300 kg/hm2的底肥对果蔗出苗、株高、茎径、单株重、有效茎、多数商品性状和工艺性状具有正效应,对分蘖、蔗汁抽出率和抗螟性有轻微负效应,故其比不施底肥的增产24.52%,达极显著水平,是本试验中对果蔗效果最佳的底肥用量;600 kg/hm2的底肥对果蔗株高、茎径、单株重、部份商品性状、工艺性状和抗螟性有正效应,对出苗无影响,对分蘖、有效茎、多数商品性状有轻微负效应,故其比对照增产20.87%,达极显著水平,是本试验中对果蔗综合性状效果最好的底肥用量;900 kg/hm2的底肥对果蔗分蘖、株高、茎径、单株重、有效茎、少数商品性状、工艺性状和抗螟性具有正效应,对出苗、多数商品性状有负效应,故其增产显著,是本试验中对果蔗效果较好的底肥用量;1200 kg/hm2的底肥对果蔗分蘖、株高、茎径、单株重、田问锤度有轻微正效应,对其他性状则为负效应,是本试验中效果最差、唯一减产的底肥用量.     

人事档案管理CAD

在对基层组织人事档案管理现状分析的基础上，提出了人事档案管理计算机辅助系统的设计目的及任务，并介绍了系统的结构及主要功能。     

多种金属氧化物混合物的固溶体的穆斯堡尔效应及XRD分析研究

在αFe_2O_3中依次累积加入K_2O、Cr_2O_3、CuO、MGO和SiO_2形成不同混合物,在空气中800℃活化焙烧5h后,发现αFe_2O_3和所加氧化物之间发生了不同的反应,生成不同的化合物。该结果有助于进一步理解这些氧化物作为助剂和载体的作用。     

Nitrogen utilization and transformation in red soil fertilized with urea and ryegrass

The influence of fertilization with urea and ryegrass on nitrogen utilization and transformation in red soil has been studied by using ^15N tracer method.When urea and ryegrass were applied alone or in combination,the percentage of N uptaken by ryegrass from labelled urea was 3 and 1.7 times that from labelled ryegrass for the application rate of 200mgN.kg^-1 and 100mgN.kg^-1,respectively;combining application of ryegrass and ureareduced uptake of urea N and increased uptake of ryegrass N by ryegrass plant,but the percentage of N residued in soil increased for urea and decreased for ryegrass.when urea and ryegrass were applied alone,the percentage of N residued in soil from labelled ryegrass was more than 69% while that from labelled urea was less than 25%,and much more ryegrass N was incorporated into humus than urea N.     

Surface Characteristics of Sorptive-Filtration Storm Water Media. II: Higher Specific Gravity (ρs > 1.0) Oxide-Coated Fixed Media

Most current control strategies for storm water treatment utilize fixed or filter-bed media with specific gravity (ρs) greater than 1.0. In contrast to Part I, Part II focuses on such higher density (ρs > 1.0) manganese-oxide-coated media that can be used in combined unit operations and processes for in-situ treatment of storm water. Methods were developed to coat manganese oxides onto sand and cementitious media for storm water treatment. With respect to manganese, coatings of ramsdellite produced a point of zero charge (PZC) of 5.2, while mixtures of birnessite and cryptomelane produced a PZC of 2.6 Manganese oxide increased the specific surface area (SSA) of sand and cementitious media. Manganese-oxide-coated sand (MOCS) produced a larger SSA (2.48-m2∕g), as compared with birnessite-coated media (BCM) (1.51 m2∕g), while the two have a similar surface charge (PZC = 6.4). Manganese-oxide-coated cementitious media (MOCM) produced a significantly larger SSA (19.49 m2∕g), as compared with coated sand, and SEM analyses indicated the surface contained manganese oxide and calcite of thickness 10–30 μm. Based on the results, coated cementitious media provided surface characteristics that can significantly enhance filtration and adsorption of heavy metal in storm water, in comparison to sand.     

折射法对溶液中分子络合物的研究(一)

本文将近期发展起来的研究溶液中分子络合物的折射法用于氯苯-苯酚体系。以侵入式折射仪测定了该体系在惰性溶剂四氯化碳中的络合常数,并对R.A.Singh等的论文中关于△n~2的求算问题进行了商榷。     

A novel intelligent verification platform based on a structured analysis model

An intelligent verification platform based on a structured analysis model is presented.Using an abstract model mechanism with specific signal interfaces for user callback,the unified structured analysis data,shared by the electronic system level design,functional verification,and performance evaluation,enables efficient management review,auto-generation of code,and modeling in the transaction level.We introduce the class tree,flow parameter diagram,structured flow chart,and event-driven finite state machine as structured analysis models.As a sand table to carry maps from different perspectives and levels via an engine,this highly reusable platform provides the mapping topology to search for unintended consequences and the graph theory for comprehensive coverage and smart test cases.Experimental results show that the engine generates efficient test sequences,with a sharp increase in coverage for the same vector count compared with a random test.     

Stable sodium metal anode enhanced by advanced electrolytes with SbF3 additive

The practical application of sodium metal batteries (SMBs) is hampered due to the inferior interfacial stability between Na metal and conventional electrolytes....     

钨合金球的制备与研究进展

基于不同领域对钨合金球性能指标的要求,总结并综述了制备钨合金球的材料体系、制备方法及性能检测方法等,对钨合金球的应用领域及今后研究发展方向进行了简单概述,以期为钨合金球的制备研究提供参考.