强化食品中活性钙提取条件的商榷

研究应用ＥＤＴＡ法测定强化食品中活性钙提取条件的选择问题，提出用酸液提取活性钙的方法。     

核桃楸枝条,插穗中生根抑制物质的含量

通过红心萝卜种子发芽试验表明核桃楸母树体内存在着生根抑制物质．枝皮内的生根抑制物质含量随母树年龄的增加而提高；生根抑制物质含量在高生长旺盛期枝皮内最低，在休眠期含量最高；平茬具有较强的生理复幼作用，根萌枝条皮内的生根抑制物质含量较低；插穗在扦插过程中皮内生根抑制物质含量逐渐降低．     

L9（3^4）正交设计绵羊裸头科绦虫病分布规律的Fuzzy分析

本文是利用Fuzzy分析法对1982～1984年作者在新疆奎屯垦区四个团场用L_9(3~4)正交表安排的绵羊裸头科绦虫感染分布调查结果进行分析。结果表明裸头科绦虫对垦区绵羊感染分布影响因素大小为绦虫种类>放牧类型>绵羊类别,并分别以无卵黄腺绦虫、山区放牧、羔羊水平组为最高。     

农业院校Java课实践教学探讨

Jaya实践教学是Jaya程序设计能力的训练，它的内容包括三个阶段：基础语言实践，核心API应用实践，项目开发实践．按照实践教学内容建立实验平台：Java教学实验平台和Java应用软件开发平台。     

刺楸大规格苗木培育技术试验研究

针对刺楸大苗培育过程中存在的关键技术难题开展栽培试验研究,总结出了不同规格刺楸苗木合适的培育密度和整形修剪技术方法。     

中国弯颈霉ZN923菌株发酵培养条件的研究

中国弯颈霉ZN923菌株在以葡萄糖蛋白陈为主要原料的培养液中进行摇瓶发酵培养，用正交试验和方差分析、交互作用分析方法检验试验结果，选出最优发酵条件为糖浓度6％，温度25℃，发酵时间72h．     

筒式风能采集系统及其试验研究

为了克服现有技术中风能采集装置对风速或风向适应能力不足、风能利用率不高的问题,提出了一种适合城市高空风能利用的新型筒式垂直轴风力发电系统,其不仅具有很强的风向适应能力,而且能够在较低风速时,充分利用导风板将风力集中到筒式风能采集系统内,提高了风轮利用风能的效率。这种风力发电系统将与城市高层建筑构成一体化,充分利用高空风能优势进行发电,噪音小,不会给城市的生活和工作带来影响。介绍了该筒式风能采集系统的主要组成部分,以及实验结果,初步证实了该设计的可行性。     

Experimental study on the effect of horizontal waves on netting panels

The effect of horizontal waves on flexible netting panels is examined in this study, to evaluate the testing method of pretensioned mooring, radial systems, and flexible netting structures. The netting was suspended at a specific hanging ratio for six polyethylene panels with different characteristics. The aim was to evaluate the calculation method for horizontal wave forces on flexible netting panels. A regular wave was used in the experiment, with wave period 0.8–2.0 s and wave height 50–250 mm. The force on the netting structure was recorded by a tension transducer and digital signal recorder, and was simulated by a cubic spline in terms of the wave experiment under different wave conditions. The horizontal wave force on the netting panel changed periodically and asymmetrically, which was similar to the surface wave elevation. The horizontal wave force was related to the netting panel height and width (l), wave height (H) and wave length (L), twine diameter (d) and bar length (a) of the mesh. Using dual series relations, least-squares approximation, and multiple stepwise regression analysis, the following formula was obtained for the horizontal wave average apex value (F) on the netting panel: F=0.13ρgl(H/2)²(d/a)(H ^0.64 L ^0.77/0.9a ^0.44).     

半干旱区中华红叶杨引种试验

半干旱地区的引种实验表明,中华红叶杨成活率高（98%）,根系发达,冠幅高大,抗旱能力强。生长高峰期出现在7～9月,全年观叶期为197 d;年地径生长量3.5 cm,年树高生长量200.8 cm;该树种适宜在半干旱区推广栽。     

Spatial preference heterogeneity in policies for improving urban green spaces

Urban green spaces (UGSs) enhance the quality of urban dwellers’ lives. Thus, efficient policies for improving UGSs—which should reflect urban residents’ needs—are necessary. Additionally, it is crucial to manage the spatial distribution of residents’ preferences to find regions that can produce greater utility within limited budgets. Using online surveys conducted in 2015, which obtained 414 valid responses, this study analyzed urban residents’ preferences for UGS improvement policies and investigated spatial preference heterogeneity for such policies in the planned city of Seongnam, South Korea. A mixed logit model was applied to analyze policy preferences, and the preference heterogeneity level was assessed by coefficient of variation. Additionally, hot spot analysis was performed to examine spatial heterogeneity. The Getis-ord Gi* was computed to identify the spatial clusters of the estimated coefficients and the marginal willingness to pay (WTP). The results indicated a high preference for enhancing quality and connectivity. While the results showed that preference heterogeneity existed in each UGS improvement policy, heterogeneity levels differed per attribute. Statistically significant local spatial clusters of estimated coefficients and marginal WTP were observed for each UGS improvement policy despite global autocorrelation being insignificant. It was observed that estimate coefficients with low coefficient of variation can make extensive spatial clusters; otherwise, the opposite trend might occur. Additionally, marginal WTP hot spots did not change according to attribute but appeared in similar locations. Therefore, spatial heterogeneity analysis is necessary to manage UGSs with higher net utilities given limited budgets. These findings will ensure the satisfaction of all urban residents by identifying their preferences for UGS policies. They will also help prioritize cost-effective implementation of policy considering spatial preference heterogeneity.