扩散与外界干扰对生物资源的影响

通过对一类具有扩散和外界干扰的生态系统的研究，获得了该系统正平衡态局部稳定和全局稳定的几个条件，这些结果表明了扩散和外界干扰对生物资源有非常重要的影响。     

Fabrication of silicon oxycarbide fibers from alkoxide solutions along the sol–gel process

Spinnable solutions are obtained in the sol–gel system of tetraethoxide (TEOS, Si(OC₂H₅)₄) and vinyltrimethoxysilane (VTMS, CH₂=CHSi(OCH₃)₃) under aqueous condition (water) with acid catalysts (HNO₃ and HCl). Polysiloxane (PSO) fibers are drawn from the solution and characterized by spectroscopic and structural analyses. ²⁹Si-nuclear magnetic resonance NMR) spectral analysis of the PSO fiber indicates the incorporation of atomic carbon in the silica network. ¹³C-NMR analysis shows the existence of considerable amount of hydroxyl groups in the PSO fiber. The spinnablity of the solution is studied by varying the mole ratios of the alkoxides, solvents and catalysts as well as precursor chemistries. The amount of water and catalysts are found to be important for the attaining of a spinnable state in the solution. SiOC fibers are obtained after pyrolysis of the PSO fibers with a high ceramic yield (88 wt%). The high ceramic yield attributes to the incorporation of vinyl-groups in the gel fiber that enhances crosslinking during pyrolysis. The SiOC fiber has a tensile strength of 776 MPa and electrical conductivity of 3.6 × 10⁻⁴ S/m.     

荔枝保鲜研究1：——低温储存下抑制失水与防霉

本文研究荔枝保鲜过程中抑制荔枝失水和防霉问题。用含５％的瑞毒雷猛锌的保鲜液浸渍处理荔枝约５ｍｉｎ后，取出凉干。密封于装有吸潮－保温－乙烯吸收保鲜剂容器中，５℃￣８℃下储存。储存５０天后，好果率约８６％，货贺期约３０小时。     

一种基于8031单片机的瞬时测速方法

对高速冲击头运动参数的测试问题进行了研究，提出一种基于８０３１ 单片机的瞬时测速方法，可以精确测量出高速冲击头的瞬时速度，并可应用于其它类似的测速问题中。     

平衡式复合齿轮泵(马达)的变量原理

介绍了平衡式复合齿轮泵（马达）的工作原理，分析了复合齿轮泵流量特性，在此基础上设计出差动轮系式复合齿轮泵变量系统，并进行了分析。     

师专体育专业健美操教法改革的尝试

根据改革教学内容、课堂结构及考试手段的尝试，阐述了健美操教学改革的重要性及健美操教学改革的成效．     

论欧阳修诗歌中菊花与莲花意象

菊花与莲花,是欧阳修步入中年以后经常题咏的两种花卉,它们在欧阳修诗歌中,有着截然相反的象征意义:菊花象征人生的痛苦无奈,莲花象征生活的快乐欢愉,二者相反相成,共同构成欧阳修中年以后人生态度的两个侧面。     

加强内部财务管理,促进《县级公安机关公用经费保障标准》的落实

经费是一个组织正常工作的基础,《县级公安机关公用经费保障标准》颁布以来,县级公安机关的公用经费有了一定的提高,但是离标准还有相当的距离。为使公安机关能做好各方面工作,高效办公、高效办案,机关负责人应该尽量争取落实经费。在实际工作中,争取经费到位是每一个职工都关注的问题。如何落实经费保障标准,本文主要从加强内部财务管理来论述。     

半导体激光器纵向泵浦准连续Cr∶LiSAF激光器的实验研究

用波长为653.2nm的半导体激光器实现了纵向泵浦Cr∶LiSAF激光器的准连续运转，晶体平均吸收功率为140mW时获得激光输出，在LD最大输出功率范围内，晶体平均吸收功率为680mW时，可获得最大平均输出功率32mW，斜效率5.6%.     

Isothermal decomposition behavior of the high nitrogen concentration γ-Fe[N] prepared from pure iron

The isothermal decomposition characteristic of the homogeneous high nitrogen austenitic samples prepared by a new multi-stage nitriding process was investigated by SEM and TEM in this paper. Lamellar-structure precipitations arranged on the decomposed austenite grain boundaries (GBs) and the flaky γ′ particles and network-structure precipitations appeared inside of the γ matrix. The extra high Vickers hardness more than 800 HV was found in the 5-h aged samples, which was different from those of the bainitic/martensitic structures in Fe-C alloys. The SAED analysis indicates the γ′ has the coherent relation with the parent γ-Fe[N] phase and the interstitial nitrogen atoms are inclined to aggregate on {1 1 0}γ′/γ planes, which also contributes to the hardness of the matrix.