CAD/CAM应用软件的选型

CAD/CAM应用越来越广泛,但对于CAD/CAM应用软件的选型是一些设计人员及企业面临的问题,文章介绍了CAD/CAM软件系统的组成,CAD/CVM应用软件的选型要素,企业选型时应注意的事项.     

水果萝卜新品种京脆1 号的选育

京脆1 号是由两个自交不亲和系05132 和05177 配制而成的鲜食水果型萝卜一代杂种。生长期75～80 d（天），叶
片近板叶型，深绿色，半直立株型。肉质根椭圆形，尾根细，茎盘小。根长13 cm，横径12 cm，平均单根质量1.2 kg，每
667 m² 产量5 000～6 000 kg。肉质根3/4 露出地面，出土部分浅绿色，入土部分白色，肉色浅绿，肉质甜脆，VC 含量 380
mg·kg^-1（FW），硫苷含量318.8 μmol·kg^-1（FW），适合生食。田间对病毒病和软腐病的抗性强于对照满堂红。适合北京、
天津、河北、山东等地种植。     

Effect of eleutheroside B/E on proliferation and expression of PPARγ and TGF-β1 in HBZY-1 cells cultured with high glucose

AIM: To explore the effects and mechanism of eleutheroside (ETS) B or E on the proliferation of HBZY-1 cells treated with high glucose. METHODS: The HBZY-1 cells were cultured under high glucose condition. The 4th generation of HBZY-1 cells was used for determining the optimal cell density, which was consistent with the growth regulation curve of the cells. The cells were divided into 6 groups: low glucose (LG) group, high glucose (HG) group, high glucose plus ETS-B/E (low dose, medium dose and high dose) groups, and high glucose plus losartan (LTG) group. After all cells were treated with the corresponding drugs at 24 h, 48 h and 72 h, the inhibitory rate of the proliferation was measured, and the expression of TGF-β1 and PPARγ was detected by immunocytochemistry and Western blotting. RESULTS: The best cell density was 2 000 cells/well, which was complied with the basic rules of the cell growth, and high glucose significantly promoted the HBZY-1 cell proliferation. At each time point, the inhibitory effects of ETS-B/E were significantly different between HG group and LTG group on the proliferation of the HBZY-1 cells (P<0.05). The expression of TGF-β1 was significantly inhibited, and the expression of PPARγ was significantly promoted by ETS-B/E (P<0.05). ETS-E showed stronger effect than ETS-B (P<0.05) in a concentration- and time-dependent manner. CONCLUSION: ETS-B/E significantly inhibits the proliferation of HBZY-1 cells under high glucose condition by decreasing TGF-β1 expression and promoting PPARγ expression.     

茄子新品种京茄13号的选育

京茄13号是以优良自交系1156为母本,以1125为父本配制而成的长茄一代杂种。早熟,始花节位为第10节,植株长势强,节间短。果实顺直,长筒状,果长25~30cm,横径5~6cm,果皮黑亮,连续坐果性强,每667m2平均产量为4240kg,低温耐受性强,适合北方保护地栽培。     

薄皮甜瓜新品种京玉绿宝的选育

京玉绿宝是以白沙蜜5代自交系357为母本,以地方品种240提纯系选后代397为父本配制而成的薄皮甜瓜一代杂种。果实扁卵圆形,单果质量200~400g,果面光滑无棱,果皮深绿色,果肉白绿色,可溶性固形物含量11%~15%,早熟,抗逆性较强,适合保护地及少雨露地栽培,每667m2产量1600kg。已在北京、河北、辽宁、吉林、内蒙古等地示范推广3000hm2。     

瓠瓜新品种浙蒲8号的选育

浙蒲8号是以自交系G7-4-3-1-2-1为母本、自交系J63-1-6-3-2-1为父本配制而成的耐热瓠瓜一代杂种。植株生长势较强,早中熟,以侧蔓结瓜为主,坐瓜性较好。商品瓜中棒形,上下粗细较均匀,平均瓜长约30cm,横径约5cm,瓜皮绿色,具光泽,单瓜质量0.4~0.5kg。耐高温性较强,高温期商品瓜率较对照杭州长瓜高6个百分点;品质佳,游离氨基酸总量1304.193μg·g-1,其中谷氨酸含量85.663μg·g-1;田间对枯萎病和白粉病的抗性强于对照杭州长瓜。适宜作露地栽培和夏秋季设施避雨栽培,夏秋季栽培每667m2产量2600kg以上。     

基于XML的科研管理信息系统研究

该文在分析农业科研单位科研管理现状的基础上,提出了一种基于XML技术的科研管理信息系统,并进一步介绍了系统采用的B/C/S结构模型,阐述了系统的功能模块和系统实现的部分关键技术。得出该系统能降低对客户端的要求,减少系统的通讯量,使得数据的呈现、交互更加容易,从而提高了科研管理工作的效率。     

Comparison of dietary essential amino acid requirements determined from group‐housed versus individually‐housed juvenile bluegill,Lepomis macrochirus

Two 60‐day experiments were conducted sequentially to determine (i) lysine requirement of juvenile bluegill, Lepomis macrochirus based on the dose–response method, (ii) requirements for other essential amino acids (EAAs) using whole‐body amino acid profile and (iii) whether differences in growth rates of group‐housed versus individually‐housed bluegills lead to different lysine requirement levels because of the presence and absence, respectively, of social hierarchies. Seven, semi‐purified, experimental diets (isonitrogenous, isocaloric) were prepared to contain graded levels of digestible lysine (10–31 g kg⁻¹). Experiment‐1 involved group‐housed bluegills (approximately 27 g, n = 10 fish/chamber, 4 chambers/diet) whereas experiment‐2 involved individually‐housed bluegills (approximately 30 g, n = 1 fish/chamber, 14 chambers/diet). Fish were fed twice daily to apparent satiation. Bluegill growth responses in both experiments generally improved (P < 0.05, anova ) with increasing dietary lysine levels from 10 to 16 g kg⁻¹, and then levelled off with further increase in lysine level (P > 0.05). Optimal dietary lysine level (digestible basis) was estimated to be 15 g kg⁻¹ based on broken‐line regression analyses of relative growth rate and feed conversion ratio with no differences being observed between the two rearing methods. Determined dietary requirement levels for other EAAs ranged from 2.4 g kg⁻¹ (tryptophan) to 15.3 g kg⁻¹ (leucine).     

灌溉设备产品信息与报价系统的开发

本文介绍了开发灌溉设备产品信息与报价系统的必要性及功能 ,较系统地阐述了该软件系统的实现思路 ,并对其应用前景作了初步预测