21 research outputs found

    Design and Implementation of the Supervisor System for the Construction Bureau of County

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    工程监理监督管理是新疆乌鲁木齐市米东区建设局新开展的一项业务,随着业务的逐步开展,亟需建立符合业务特点的监理项目管理系统来加强监理业务的管理,提高工作效率,加强监理工作监督。为了使系统具有良好的扩展性和易维护性,本文首先对Struts2、Spring、Hibernate框架的理论基础、体系结构及相关J2EE技术进行了深入研究和探讨,然后针对米东区建设局的监理管理需求,设计、开发出基于SSH框架的监理项目管理系统。 本系统的特点主要有以下几个方面:利用Hibernate技术实现数据库持久化层;利用Struts来实现业务代码和视图代码的分离;利用Spring来融合Struts和Hibernate...Engineering supervision and management is a new business development in Xinjiang Urumqi Midong District Construction Bureau, the business gradually developed with the urgent need to establish an operational characteristics of supervision project management system to strengthen supervision of operations management, improve work efficiency, strengthen the supervision of the work of supervision. In o...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X201323060

    Influence of new soil conditioner and nitrogen fertilizer on water-nitrogen

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    通过对冬小麦施用一种以农作物秸秆为主要原料研制的新型土壤改良剂,探讨调亏灌溉下该改良剂与氮肥配施对冬小麦产量及土壤水氮利用率的影响。【方法】以冬小麦"西农979"为试验材料,采用田间小区试验,对灌水(灌水量分别为0,1.467m3/hm2)、新型土壤改良剂(施入量分别为0,1 500kg/hm2)和氮肥(纯氮施入量分别为0,160,288kg/hm2)3个因素不同水平进行完全随机组合设计,共12个处理,研究亏灌条件下,新型土壤改良剂和氮肥配施后,成熟期冬小麦产量、土壤水分及氮素利用率的变化情况。【结果】新型土壤改良剂和氮肥单施或配施均能改善成熟期冬小麦土壤水分条件,提高土壤含水量、水分利用率及籽粒产量,且灌水条件下效果更为明显。新型土壤改良剂和氮肥配施不仅明显增加了0~200cm土层土壤硝态氮含量,而且有利于提高植株氮素吸收量。无论灌水与否,1 500kg/hm2新型土壤改良剂和288kg/hm2氮肥配施的增产效果最明显,水分利用效率、植株氮素吸收量均较高。【结论】适度亏灌条件下,新型土壤改良剂与氮肥配施可显著提高作物产量及水氮利用率。 更多还原This experiment aimed to study the influence of new soil conditioner(main material was straws)and nitrogen fertilizer applied in winter wheat field on wheat yield and water-nitrogenuse efficiency under regulated deficit irrigation.【Method】This experiment was carried out with winterwheat“Xinong 979”cultivar as material and used field plot and microplot.Under regulated deficit Irrigation(non-irrigating,irrigating 1.467 m3/hm2),different levels of the new soil conditioner (0,1 500kg/hm2)and N fertilizer(pure nitrogen:0,160,288kg/hm2)were used to wheat field.This experimenthad 12treatments,in order to study the influence of coupling new soil conditioner and nitrogen fertilizerapplication on yield of winter wheat,soil water and nitrogen use efficiency in harvest period under regulateddeficit irrigation.【Result】The results showed that the use of new soil conditioner and N fertilizer can improve the soil water in harvest period of winter wheat and enhance soil water content,water used efficiencyand grain yield.Moreover,the effects were more remarkable with irrigation.Applying new soil conditionercombined with N fertilizer not only can enhance soil NO-3 -N concentration obviously in 0-200cm soildepth,but also improve nitrogen uptake.The yield,water used efficiency and nitrogen uptake were clearlyhigher when applying 1 500kg/hm2 soil conditioner combined with 288kg/hm2 N fertilizer nevertheless irrigation or not.【Conclusion】With the moderate deficit irrigation,coupling of soil conditioner and appropriate amount of N fertilizer significantly increased yield and wheat water-nitrogen use efficiency

    3-氯头孢烯酸的合成

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    以3 羟基 7 苯乙酰基 3 头孢烯酸二苯甲酯为原料,经过氯代、酯水解、酰胺水解3步反应制备了药物头孢克洛的中间体3 氯头孢烯酸(7 氨基 3 氯 3 头孢烯 4 酸,7 ACCA),总收率73%。酶解反应中以c(NaHCO3)=1×10-3mol/L的水溶液代替常用的氨水溶液,缩短了反应时间。三氯化磷作为氯代试剂,间甲酚作为酯水解试剂,反应中采用TLC进行终控,展开剂分别为V(环己烷)∶V(乙醇)=1∶1和V(丙酮)∶V(石油醚)∶V(乙酸)=5∶5∶1

    Influence of New Soil Conditioner on Growth and Nutrient Absorption of Winter Wheat

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    通过对冬小麦施加一种以秸秆为主要原料研制的新型土壤改良剂(简称PJG),采用田间试验,探讨其对冬小麦生长、产量、各生长期养分含量及氮、磷累积吸收量的影响。结果表明:施加PJG土壤改良剂能提高小麦地上部各生长期干物质累积量,单施可提高8.4%,与氮肥配施可提高37.8%;可增加植株地上部各器官中氮、磷含量及其累积吸收量,但对钾素影响不大。施加1 500 kg/hm2的PJG改良剂,能较对照增产1.90%,与氮肥配施效果更佳,最高增产9.96%。综合考虑,应用PJG土壤改良剂时应与适量的氮肥配施,对作物的生长和产量的提高效果更佳

    Field Experimental Study of the Water-saving and Production-increase Effects of Soil Conditioner

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    采用田间试验,探讨了施用土壤改良剂对冬小麦的产量及水肥利用效率的影响。结果表明,施加土壤改良剂能降低作物生育期耗水量,提高冬小麦的产量,增加水肥利用效率。在不灌水条件下,施加土壤改良剂1500kg/hm2,能够使冬小麦较对照增产15%,水分利用效率(WUE)提高了21.65%,磷肥利用效率(PUE)较单施磷肥增加2.92%。在灌水33.3mm的条件下,施加土壤改良剂较对照可增产28.57%,将土壤改良剂与磷肥混施增产可达到42.86%。而且,PUE较单施磷肥增加了11.11%,WUE达到25.06kg/(hm2·mm)

    Influence of applying phosphorus on soil nitrate N and nutrient uptake and yield of summer maize

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    研究不同施磷水平对夏玉米生长期土壤硝态氮时空分布、累积量及玉米籽粒产量的影响,为夏玉米合理施肥提供参考依据。【方法】采用田间小区试验,在施磷水平分别为0,60,120和180 kg/hm2时,研究施磷对夏玉米产量及土壤氮素吸收累积的影响。【结果】在0~110 cm土层,随土壤剖面深度的增加,土壤硝态氮含量逐渐降低,0~30 cm土层明显高于30~110 cm土层且变幅较大,施磷肥能显著降低土壤硝态氮含量。随夏玉米生育期推进,0~110 cm土层硝态氮累积量呈先降低后升高的趋势,于灌浆期达到最低值;当施磷水平为120 kg/hm2时,成熟期0~110 cm土层硝态氮累积量低于施磷60和180 kg/hm2的处理;施磷肥能显著增加玉米籽粒产量、籽粒吸氮量及氮收获指数,均以施磷水平为120 kg/hm2时最高。【结论】在施氮基础上施用磷肥,有利于提高玉米籽粒产量,促进作物对氮素的吸收累积,减少土壤中硝态氮的累积及向更深土层中的运移量

    The Influence of Nitrogen Mixed with Phosphorus on Soil Water Content and Water Use Efficiency of Summer Maize

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    随土壤剖面深度的增加,土壤含水量逐渐降低,上层土壤含水量变幅大于下层。在同一氮肥水平下,夏玉米各生长期内0~50 cm土层含水量呈施磷处理高于不施磷处理,50~110 cm土层则反之。苗期—拔节—灌浆—收获期0~110 cm土壤蓄水量呈升高—降低—升高趋势;苗期呈氮磷配施处理高于单施氮肥处理,其它生长期氮肥与磷肥水平为120 kg/hm2配施处理最高;表层50 cm土层蓄水量均呈现氮磷配施处理高于单施氮肥处理,50~110 cm土层则反之。氮磷配施能显著提高产量及水分利用效率,二者均以配施磷肥120 kg/hm2处理最高;当施磷量超过120 kg/hm2后,产量和水分利用效率反而有下降趋势

    交流电对X80钢在近中性环境中腐蚀行为的影响

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    通过数据采集、电化学测试、浸泡实验和表面分析技术研究了交流电对X80钢在近中性环境中腐蚀行为的影响。结果表明,交流电干扰下,随着交流电密度的增大,交流腐蚀形态发生变化,由全面腐蚀转变为局部腐蚀,且试样表面产生较多的点蚀坑。全波交流电正负半波交替干扰下,X80钢发生阴阳极极化,导致Fe的局部溶解和H的析出;负半波交流干扰下会导致析氢而发生氢致阳极溶解,产生的点蚀坑均较尖锐;正半波干扰下,只发生阳极溶解,产生的点蚀坑呈现凹形,且比较平滑。不同波形交流干扰下,X80钢表面产生的腐蚀产物不一致:全波和正半波干扰下,腐蚀产物较疏松且发生龟裂,无a-FeOOH;负半波交流干扰下,X80钢表面腐蚀产物较致密,腐蚀产物存在a-FeOOH,对基体具有一定的保护作用

    品管圈降低卒中患者住院期间便秘发生率的应用研究 Application of Quality Control Circle in Reducing the Incidence of Constipation in In-hospital Stroke Patients

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    【摘要】 目的 探讨品管圈活动在降低卒中患者住院期间便秘发生率中的应用及维持效果。 方法 在山东大学附属省立医院神经内科开展品管圈活动,针对神经内科住院卒中患者便秘发生率高的原因进行查检、分析及改进,改进措施实施一个月后,对实施品管圈活动前后卒中患者便秘发生率进行比较。半年后将改善措施推广至保健神经内科,比较实施推广一个月后保健神经内科卒中患者便秘发生率的变化。 结果 改善前调查神经内科170例缺血性卒中患者,改善后调查142例缺血性卒中患者,神经内科卒中患者便秘发生率由改善前的67.64%降低到改善后的27.46%,差异有统计学意义(χ2=49.98,P<0.01),半年后改善效果仍维持,便秘发生率为20.06%。保健神经内科卒中患者便秘发生率由改善前的66.50%降低到改善后的25.50%,差异有统计学意义(χ2=67.67,P<0.01)。 结论 通过品管圈活动,有效降低了卒中患者住院期间便秘发生率,可在院内其他科室进行推广。 【Abstract】 Objective To investigate the effect of application of quality control circle (QCC) in reducing the incidence of constipation in in-hospital stroke patients. Methods QCC was implemented in Department of Neurology, Shandong Provincial Hospital, the causes and incidence of constipation of stroke patients were examined and analyzed to develop the improvement measurements. After implementing the improvement measures for one month, the incidences of constipation before and after the improvement were compared. Based on the good improvement effect, the improvement measures were applied in Department of Health Neurology after half a year. The changes of constipation incidence of stroke patients in Department of Health Neurology after implementing the measures for one month were observed. Results 170 and 142 patients with ischemic stroke in Department of Neurology were investigated before and after the QCC, respectively. Through the QCC, the incidence of constipation of stoke patients in Department of Neurology significantly reduced from 68.64% to 27.46% (χ2=49.98, P<0.01). After half a year, the improvement effect still maintained and the incidence of constipation was 20.06%. The incidence of constipation of stroke patients in Department of Health Neurology reduced from 66.43% to 25.32% through the QCC, and the difference was statistically significant(χ2=67.67, P<0.01). Conclusions QCC was effective in reducing the incidence of constipation of in-hospital stroke patients, which can be promoted to the other departments in the hospital

    一种壳寡糖复配制剂及其在延长水果货架期中的应用

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    一种用于延长水果货架期的壳寡糖复配制剂,含有具有保鲜功能的壳寡糖、有机酸和生长抑制剂,其中壳寡糖含量占总量的0.3-5%。有机酸的含量为0.1-2%,生长抑制剂含量占总量的0.03-0.5%。该复配制剂应用于水果。将具有保鲜功能的壳寡糖引入水果保鲜剂中,具有杀菌和保鲜的双重功效;此外,以壳寡糖和有机酸为主要成分的药剂具有安全无毒、成本低廉、使用量小、环境友好等优点
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