黄顶菊种子的图像分割及特征提取

针对黄顶菊种子人工识别时存在的主观性强、效率低、可重复性差等缺点,提出利用计算机视觉和图像处理技术提取黄顶菊种子特征参数的方法,研究了黄顶菊种子图像的分割方法、目标提取及种子图像中形态和颜色特征的提取方法,分析了各形态特征参数的相关性,筛选出了能精确反映黄顶菊种子几何特征的参数,验证了各特征参数提取方法的有效性,为后期的种子自动识别提供了依据。     

松香乙萘酚醛树脂合成研究

采用乙萘酚，松香，甲醛，甘油反应，合成一种新的松香乙萘醛醛树脂。该树脂色泽浅，软化点高，油溶性好，光泽度高，讨论了原料比，催化剂，温度，时间等反应条件。用ＩＲ谱对产品结构进行表征。     

Physiological Effect of New FA Antitranspirant Application on Maize

The field trial was conducted to study physiological effect of new FA antitranspirant on maize.The new FA antitranspirant was sprayed at 10 d pre-tasseling, ear filling stage and 10 d pre-tasseling + earfilling stage, with the concentrations of 0, 0.5, 1.0, 1.5 and 2.0 ml L-1. The results indicated that the appli-cation of new FA antitranspirant increased nitrate reductase activity (NRA), free proline content, chlorophyllcontent and water content of leaf, thus drought stress can be mitigated. The new FA antitranspirant increasedphotosynthesis rate and reduced transpiration rate, stimulated growth and reduced water loss. 10 d pre-tassel-ing + ear filling stage application had a cumulative effect on the indices compared with 10 d pre-tasseling andear filling stage, except for NRA. The new FA antitranspirant caused an increase of grain yield by 5.37 to29.58 % with different treatments. The optimal concentration is 1.5 ml L-1 , i.e. 75 g new FA antitranspirantdissolved in 50 kg water, and the optimal apply period is 10 d pre-tasseling ± ear filling stage.     

人胚胎角膜的肾上腺素能神经纤维分布及其特点

用乙醛酸诱发灾光技术研究了14－30周胎儿眼结膜的肾上腺素能神经纤维的分布。发现角膜巩缘的肾上腺素能神经纤维主要与角巩膜的血管伴行，纤维数量随胎龄增加而增加，角膜基质层于16周以后有少量纤维，角膜内皮层和上皮层未发现神经纤维。     

预防樟子松插穗干旱的方法

樟子松采穗最佳季节为母树休眠期和7月10－7月15日。在母树枝条上环割生根率可提高30％；插穗切口采取“劈切”，其生根率可提高12．5％。地温控制在20－25℃；插壤水分管理标准是PF值2，空气相对温度控制在85％以上，插床遮荫度控制在70％为宜。     

关系模型在绿化植物有害生物数据库中的应用

介绍了关系数据库概念和关系模型的设计理论,阐述了关系模型中关系数据结构、关系操作、关系规范等在绿化植物有害生物数据库中的具体应用。     

Effect of peroxisome proliferator-activated receptor γ agonist rosiglitazone on intestinal injury in rats undergoing orthotopic autologous liver transplantation by inhibiting inflammatory response

AIM: To investigate the effect of rosiglitazone, a peroxisome proliferators-activated receptor γ(PPARγ) agonist, on the expression of PPARγ, the activation of NF-κB and intestine injury in the rats undergoing orthotopic autologous liver transplantation(OALT).METHODS: Sprague-Dawley male rats were randomly divided into 4 groups:control group, sham group, OALT group and rosiglitazone(0.3 mg/kg, iv) pretreatment(ROS+OALT) group. The OALT model was established, and the intestinal tissues were collected 8 h after the liver reperfusion. The intestinal tissue sections were stained to visualize the damage. The expression of PPARγ and NF-κB in the tissues, the concentrations of diamine oxidase(DAO) and fatty acid-binding protein 2(FABP2) in the serum and the concentration of TNF-α and IL-6 in the tissues were measured.RESULTS: Compared with sham group, the intestinal mucosa of the rats showed obvious pathological injury after liver reperfusion in OALT group and ROS group, the Chiu,s scores of intestinal mucosa was significantly higher, and the serum concentrations of DAO and FABP2 increased(P<0.05). After rosiglitazone pretreatment, the injury of intestinal mucosa of the rats was alleviated, the Chiu,s scores was lower and the serum concentrations of DAO and FABP2 decreased(P<0.05), the PPARγ expression was obviously up-regulated in the intestinal tissues, the nuclear translocation of NF-κB was reduced and the concentrations of IL-6 and TNF-α were decreased.CONCLUSION: During perioperative period of OALT in rats, the inflammatory responses are obvious. Furthermore, obvious intestinal injury occurs. PPARγ agonist rosiglitazone obviously up-regulates PPARγ expression and inhibits the inflammation in the intestines, thus protecting against intestinal injury in rats undergoing OALT.     

Development Zones,Foreign Investment,and Global City Formation in Shanghai*

ABSTRACT The rapid economic ascent of China and the increasing integration of the world economy in the past two decades have made metropolises in China such as Shanghai and Beijing emerging global cities. Foreign investment is a central force underlying the emergence and transformation of the Chinese metropolises into global cities. This is especially true in Shanghai, which has experienced massive infusion of foreign investment. Varied forms of foreign investment or development zones have been created to promote foreign investment inflows, yet remain under‐studied. This paper analyzes structure, performance, and underlying factors of development zones in Shanghai, and discusses the implications for global city‐formation; it unfolds the variations among development zones, and illustrates the significant role of the state and local conditions. As the literature on global cities dwells primarily on the experiences of advanced economies, this paper further contributes to a better understanding of the dynamics of emerging global cities in the developing world.     

微波技术在食品加工中的应用与发展

阐述了微波技术的加热与杀菌原理和特点,介绍了微波技术在食品加工中的应用情况与发展前景,以期促进微波技术在食品工业中的广泛应用。     

Visual MODFLOW在李官堡水源地水流模拟中的应用

数值模拟方法目前是模拟地下水流动和评价地下水资源量的主要技术方法之一。Visual MODFLOW软件具有系统化和可视化的突出特点,因此应用该软件建立地下水系统的数学模型,对沈阳市李官堡水源地的水流情况进行了模拟和预测。模拟结果表明,该水源地为建设项目提供所需的9.8×104m3/d水量是可行的。模型的建立对傍河型水源地的建设和开采水量的预测有一定的借鉴价值。