利用硫化碱废渣制备新型多功能悬浮型种衣剂的研究与应用(Ⅰ)--新型多功能悬浮型种衣剂的研究

本文研究了以工业硫化碱废渣与一类丰富的废弃矿物质等为原料,合成新型阴离子表面活性剂--矽力康复合肥在悬浮型种衣剂中的应用,探讨了矽力康复合肥、不同种类的阴离子、非离子表面活性剂对20%的悬浮型种衣剂稳定性的作用及相互作用,确定了最佳复配条件.结果表明:在使用单一组分中,使用矽力康复合肥比其他9种表面活性剂的稳定性高20.2%～141.2%(15 d);在复配体系中,50g/L矽力康复合肥与15g/L乳化剂A复配体系在90 d后的悬浮率仍达到90.4%,比50g/L十二烷基苯磺酸钠与40g/L乳化剂A的复配体系高29%;产品粘度为500～600mpa·s、对种子的包衣均匀度为95.3%,成膜时间为19min,包衣脱落率为7.42%,热贮稳定性均符合标准,并且产品本身还含有大量促进种子生长的必要元素.     

Effects of Additives and Packaging Method on Quality and Microbiological Characteristics in Mild Thermal Processed Fish Mince

The effect of adding 2% sodium lactate (NaL) premix to mild thermal processed fish mince, and the effect of packaging the product in vacuum, modified atmosphere (MA), or pretreated with soluble gas stabilization (SGS) prior to MA packaging were investigated. Adding 2% NaL premix significantly affected the color, and the bacterial load was significantly decreased compared to the control product, together with significant differences in the sensory score. Breaking force, firmness, stiffness, and gel strength were significantly increased by adding NaL, while no effect was found on head space gas composition, top web deflation, and pH. SGS significantly decreased the microbial load, but had no interaction effect with NaL. SGS significantly increased the amount of CO₂ in the head space gas, together with decreased top web deflation compared to modified packaging. Vacuum packaging significantly increased the breaking point, firmness, and stiffness and increased pH compared to MA and SGS. Addition of a NaL premix to minced fish products can be used successfully to increase shelf life without compromising other quality characteristics. SGS treatment before packaging in MA can successfully be used as an alternative to adding NaL with respect to microbiological product quality and without compromising other quality characteristics.     

大豆新品种安豆4号高产、稳产性分析

利用品种稳产性系数和高稳系数法,以2008年河南省大豆区域试验汇总结果为依据,以安豆4号历年参加的河南省大豆区域试验、河南省大豆生产试验、国家黄淮海夏大豆中组品种区域试验的平均亩产量为参考,对安豆4号的高产性和稳产性进行了分析。结果表明,安豆4号平均亩产量高、变异系数低、高稳系数高,充分说明了安豆4号是一个高产稳产的大豆新品种。同时对安豆4号的特征特性和栽培技术要点进行了介绍。     

天然气的地下储存条件及前景

介绍了建设天然气地下储库的地质基础,阐述了建库的岩体其主要结构面分布及地应力分布特征。对影响洞库稳定性和水封条件的可靠性问题进行了剖析。以储丙烷、丁烷为例,说明地下水压力必须大于储品压力。针对储气库的特点,评析了其应用前景及经济效益。     

SHAPE OPTIMIZATION OF BEAM-COLUMNS

In this paper,a beam-column design problem is formu-lated into an optimization problem The modern optimization technique,sequential unconstrained minimization technique(SUMT),is used toselect the design vesiables at points.The optimum designs obtained arereasonable and verifiable.This procedure may be used in the design ofbeam-columns.Considerable savings can be achieved due to the effectiveuse of material through the best proportion of the shape of beamcolumns.     

氮、磷对稳定塘处理制浆废水效果影响的研究

研究了氮和磷对稳定塘系统处理制浆造纸废水效果的影响。发现处理效果差异最明显的是厌氧塘，随着停留时间的增加，对兼性塘、好氧塘出水的处理效果的影响越来越小。分别建立了厌氧塘出水CODCr、厌氧塘一级反应速率常数K(以CODCr为底物)与氮、磷的二元二次方程模型，求得在氮、磷取值分别为0和5．2时处理效果最优。这个结果将用于强化鹤岗华欣纸业股份有限公司稳定塘制浆废水处理。     

米糠稳定化研究进展

稳定化处理是米糠能够有效利用的先决条件。本文介绍米糠稳定化处理的意义、方法及其进展。对米糠稳定化处理的要求、食品用稳定化米糠的质量标准、各种稳定化方法的优缺点及其发展现状作了相应的介绍。     

Modeling Economics of Conjunctive Surface and Groundwater Irrigation Systems

Tank irrigation is one of the oldestsources of irrigation in India. Decline inthe area irrigated over the years due toinadequate operation and maintenance,large-scale development of groundwatersources, disintegration of traditionalirrigation institutions, heavy siltation,encroachment, etc., has resulted in heavysupplemental well irrigation in order toavoid crop losses. Rice yield from farmswith supplemental well irrigation wasobserved to be high. Even though it ispossible to calculate the value ofgroundwater for different years, it isdifficult to obtain the value of thegroundwater used to stabilize riceproduction from tank irrigation. The modeldeveloped in this paper is used tocalculate the stabilization value ofgroundwater using the Srivilliputhur BigTank, which is a representative tank inTamilnadu, India.A mathematical formula is used to model theeconomics of conjunctive surface andgroundwater irrigation systems. Analyticalexpressions for the value of groundwaterand the stabilization value of groundwaterare derived, assuming that the amount ofsurface water is a general stochasticvariable with a probability densityfunction, and that the demand function forirrigation water is also of that generalform. Finally, the model is applied toreal data collected during the period 1986to 2000 for the Srivilliputhur Big Tank inTamilnadu, India, and the value ofgroundwater and the stabilization value ofgroundwater are calculated at 1999–2000constant prices. The results indicatedthat the stabilization value of groundwater(covering the entire tank area of 402 ha.)was Rs. 166,677, while the value ofgroundwater was Rs. 1,064,720. Thus, about15.7% of the value of the groundwater wasused for its stabilization. Using thestabilization value of the groundwater infuture investment analysis will help tomore accurately indicate project benefitsdue to groundwater supplementation in thetank command areas.     

水下管道“人工草”固定技术及应用

水睛管道所处的自然环境非常复杂，水流将对管道产生各种作用力并且危及管道安全。针对我辆有水下管道的实际状况，在广泛搜集国内外有关资料的基础上，提出了一种新型稳定水下管道的方法－－水下管道“人工草”固定技术。该方法具有技术先进、用途广、施工简便、费用低等特点，不但可以决现有管道埋深不够及裸露，悬空等问题，而且可以为管道无沟敷设提供一种有铲的稳管方法。     

土壤固化酶在中国的应用及研究进展

土壤固化酶于二十世纪八十年代逐渐应用于筑路、筑堤、筑坝、垃圾填埋处理、基础加固等领域,中国自1995年将土壤固化酶应用于道路建设以来,取得了一些经验和成效,但也存在一些问题。该文概述了土壤固化酶在中国的应用及研究进展;分析了其所具有的环保价值、可产生经济效益,以及土壤固化酶在中国推广应用过程中出现的一些问题;通过土壤固化酶与石灰、水泥等传统固化材料对土的无侧限抗压强度影响的试验研究,说明土壤固化酶有利于土体稳定的特性;为进一步研究和发展该技术提供依据。