高大平房仓优化控温对小麦蛋白相关品质的影响

通过对高大平房仓进行仓墙外部保温及仓顶吊顶隔热保温优化改造(18号仓),以普通未进行保温优化高大平房仓为对照(8号仓),研究了天津地区高大平房仓综合改造对不同储藏粮层小麦蛋白相关品质的调控效应。结果表明,小麦储藏1年后,在易受顶层空气影响的上层粮层,试验仓粮堆上层小麦的总蛋白、可溶性蛋白、面筋含量分别较对照仓高出4.44%、9.11%和7.48%,麦谷蛋白/麦醇溶蛋白的比值提高了4.39倍,对照仓的麦醇溶蛋白转变为麦谷蛋白的劣变速度为试验仓的3.12倍。可见,高大平房仓优化改造控温对小麦储藏期间蛋白相关品质的劣变可起到明显的调控作用。     

反辐射隔热涂料及聚氨酯在双拱板仓的综合应用试验报告

低温储粮能够抑止虫霉的孳生，延缓粮食的陈化，保持储粮的良好品质，是当今粮食储藏技术的主要发展方向，为此粮食储藏工作者在这方面进行了积极的探索。1998年以来国家投资新建的高大平房仓夏季仓内升温较快，如华北地区气温高达38℃，表层粮温达36℃，对安全储粮极为不利，故储粮单位应积极完善仓房的隔热性能，设法延缓仓温的回升，保持粮温的相对稳定，从而实现低温储粮。为此，我库因地制宜，在双拱板仓隔热改造进行低温储粮方面进行了有益的尝试。     

稻壳粮面压盖密闭控温对稻谷品质变化趋势的影响

为了控制稻谷储藏期间品质的变化,针对稻谷的储藏不稳定性,对高大平房仓散存稻谷进行了稻壳压盖密闭控温技术与常规储藏技术试验对照。通过定层、定点、定时对粮温、品质等数据进行检测和分析,在粮面采取稻壳压盖控温的条件下,能有效控制稻谷表层粮温的上升,隔热保冷效果明显,延缓了稻谷品质变化的速度,实现了稻谷的安全度夏储藏。     

珍珠岩隔热保温层对高大平房仓控温储粮效果的研究

在仓房拱板间铺设珍珠岩隔热保温层对高大平房仓进行隔热保温改造,对改造仓房(16号仓)和未改造仓房(12号仓)在2015年7月14日至10月15日期间仓温、最高粮温、最低粮温、平均粮温进行对比分析。结果表明:铺设珍珠岩隔热保温层进行改造后的仓房较未改造仓房,仓温低2.6℃、平均最高粮温低6℃、平均最低粮温低0.3℃、平均粮温低1.0℃。说明珍珠岩隔热保温层对高大平房仓的仓温和最高粮温的控制有较明显效果,可进行控温储粮推广应用。     

高大平房仓夏季隔热控温储粮试验

进行了高大平房仓粮面利用散装稻壳和保温板双层压盖隔热控温度夏储粮试验。结果表明,夏季最高粮温19℃、最低粮温6℃、平均粮温7℃,确保了储粮安全,保持了储粮品质。     

华南地区新建高大平房仓控温储粮探讨

华南地区由于年平均气温较高,湿度较大,开展控温储粮工作具有一定难度。近年来,我库不断探索新建高大平房仓较为经济、有效的控温储粮方式,通过在相对湿度较低的冬季利用轴流风机通风降温,使粮堆平均粮温均匀下降到13℃-14℃,并加强仓房的隔热密封措施,依靠粮堆自身“冷心”效应,达到理想的控温储粮目标。同时在对照仓进行了仓顶绿化改造对比试验,探索、分析进行控温储粮改造的效果。     

惰性粉粉剂粮面拌药在高大平房仓中的应用试验

惰性粉粉剂对高大平房仓储存小麦、稻谷分别进行粮面拌药试验,定期跟踪检测试验仓与对照仓进行粮堆害虫发生情况、粮温变化情况以及粮食储藏品质变化情况,试验结果表明惰性粉粉剂对储粮害虫有较好的抑制作用,且对粮温以及粮食储藏品质未见不良影响。     

高大平房仓隔热装置控温应用试验

由于高大平房仓屋顶面积大,墙体较薄,受太阳辐射强,仓房整体隔热保冷性能较差,对夏季安全储粮构成威胁。而低温储粮能延缓粮食品质劣变,控制虫霉危害,是绿色储粮的发展方向。我库采用在仓房四周架设隔热装置盖上遮阳网来减少外温对整体仓房的影响,以达到降低仓温,减少表层、沿墙四周粮温的上升幅度,取得了满意的效果。     

玉米高温季节隔热控温储藏实仓试验

对高大平房仓的门窗、通风口等用保温材料进行隔热,内墙四周用高分子挤塑保温板进行隔热,以提高仓房隔热性能,改善仓房储藏条件;分析粮温变化,采取适当措施进行降温,延缓粮温上升,适时进行密闭、隔热,可达到明显的控温效果,使高大平房仓玉米度夏时平均粮温控制在25℃以下,表层平均粮温控制在28℃以下,从而确保玉米度夏后质量良好。     

利用绿色储粮技术控温保粮的探讨与实践

现浇拱板平房仓最大的问题是仓房隔热性能较差、上下弦板间积热严重,导致夏季仓内温度高、储粮出现＂热皮冷芯＂。持续高温会加速储粮品质劣变,不利于粮食品质保鲜及安全储藏。为此,采用改造平房仓的仓顶隔热层,加盖新型隔热材料、仓库周围种植绿色爬藤植物、利用自然冷源通风散热、少用或不用化学药剂保粮等绿色储粮综合技术,最大限度地减少盛夏仓顶曝晒后的积热,隔热控温,解决粮仓降温问题,延缓了粮温的上升速度,抑制了害虫的生长繁殖和储粮品质的劣变,保证了储粮安全。     

冷冻干燥速溶蛋花汤的加工技术

介绍了运用冷冻干燥技术进行速溶蛋花汤的加工,研究了生产工艺、特点以及影响产品质量的主要因素。试验表明,采用冷冻干燥技术加工的速溶蛋花汤,具有营养丰富、风味独特、方便快捷等特点。     

Measuring of Quantity of Matter-mass and the Measuring of Inertia of Matter-momentclm

A new definition of inertia,i.e. the momentum is the measuring of inertia of matter, is proposed. The article through and etc., subjects, the correctness of the new notion of inertia:The monentum is the measuring of inertia has been demonstrated, and the unsolved contradictions of the traditional definition of inetia. And the mass is the measuring of inertia has been revealed.     

香蕉遗传转化方法研究进展

香蕉是热带亚热带发展中国家重要的粮食作物和碳水化合物来源。但近年来,香蕉生产受到严重的病虫危害。大多数香蕉栽培品种是三倍体,生长周期长,而且不孕。由于没有种子,给繁殖和育种带来一定的困难。遗传转化技术的发展为香蕉品种的改良提供了一种有效的手段。香蕉的遗传转化方法有电激法、基因枪法、农杆菌介导法等。农杆菌介导法的应用是香蕉品种改良的一个重大突破。香蕉遗传转化的外植体也发展到多种,有原生质体,胚性细胞悬浮系,分生组织,以及横切薄片等。近几年,随着分子生物学的发展,出现了转化效率更高,重复性更好的香蕉遗传转化技术。如农杆菌和基因枪结合法,离心辅助农杆菌介导法、真空渗透技术等。这些新技术新方法的出现,必将推动香蕉产业高速发展。     

壳聚糖对石榴果汁澄清效果的影响

利用壳聚糖的絮凝作用对壳聚糖在甜石榴汁澄清中的应用效果进行了研究,试验结果表明,壳聚糖用量为0.3g/L、澄清时间为60min、温度为35℃时,甜石榴汁透光率可达85%以上,且通过对壳聚糖处理前后可溶性固形物、总酸、VC等营养成分含量的比较,确定以上工艺参数为甜石榴汁澄清的最佳选择。     

新疆布尔津县土地利用格局特征研究

基于RS与GIS技术,利用景观生态学理论及景观格局指数对布尔津县土地利用现状进行定量分析。结果显示为：（1）布尔津县以草地、林地为主要景观类型,镶嵌着耕地、水域等景观类型。（2）四个分区（即高山区、丘陵区、平原区、荒漠区）的林地资源组成差异明显,耕地、居民、交通及工矿用地集中分布在丘陵区和平原区（3）从各项指数来看,高山区的多样性指数较低;平原区是受人文因素最多的区域,景观优势度低,各种土地利用类型比例差异不大,有利于生态可持续发展,但要合理的开发利用;荒漠区生态环境相对脆弱,要加强生态环境的保护与改善。通过该研究对布尔津县的土地利用现状作一个了解,为该县乃至整个地区的景观规划和可持续发展战略提供科学依据。     

酸枣幼根原生质体的制备

以生长6～9 d的酸枣种子幼根为试验材料,0.7 mol·L-1甘露醇作为渗透压稳定剂、pH值5.5～6.0、28℃恒温水浴条件下,以光学显微镜观察的水解总时间、初始产生原生质体的时间、原生质体产量及细胞碎片量为指标,研究通过酶水解来制备酸枣幼根原生质体的方法.结果表明,在含1％果胶酶+4％纤维素酶R-10+3％纤维素...     

影响核桃贮藏品质因素的分析

介绍了几种核桃贮藏方法,综述了影响核桃贮藏品质的几个主要因素,以及针对上述影响因素提出若干解决对策.     

The Simulation of Comfort of Nine DOF of Automobile

Automobile comfort dynamic simulation is necessary when we predict and evaluate the comfort of a automobile or optimize performance of automobile. The nine DOF vibration model of automobile is established , which acts root mean square value of body in multiple work conditions as comfort evaluation indices. Based on the comfort simulation, the Hongyan 1160 is predicted in the way of comfort. The programmes can be used in many different automobiles . The computational result indicates that the model can simulate vibration of automobile truly. It is significant to research automobile comfort evaluation to optimize performance of automobile and comfort simulation .The computational program can be applied to optimize or simulate which has some reference value.     

Efficiency of water use of early plantings of sunflower

Rain fed crop production in Mediterranean environments depends to a large extent on strategies that avoid the intense summer drought. Early plantings of sunflower have given consistently higher yields in such environments, but the basis for such yield increases has not been explored. We conducted two field experiments at Cordoba (Spain) to investigate the effects of an early and a late planting date on the components of water-limited crop productivity; namely, water use (T), water use efficiency (TE) and harvest index (HI) of sunflower. The results were generalized by simulating rain fed sunflower yields, under early (1 January) and late (15 March) plantings, for a 25-year period with the aid of a simulation model of the Ceres type (OILCROP-SUN) which has been validated in Cordoba. Experimental seed yields of early plantings in 1989 and 1996 were 2.0 and 3.0 t ha⁻¹, while late plantings yields were 1.3 and 2.4 t ha⁻¹, for the 2 years. Average simulated yields were 2.7 ± 1.1 and 1.9 ± 0.7 t ha⁻¹ for early and late plantings, respectively. For the 2 years, T of early plantings was higher than that of late plantings, but the response of TE and HI to planting date was not the same in the two experiments. In the simulation exercise, T and TE of early plantings were consistently higher than those of late plantings, while there were no differences in the HI for the two planting dates. We conclude that early plantings of sunflower increase rain fed yields by increasing both T and TE, while the impact of planting date on HI very much depends on the crop water stress pattern, which is quite variable from year to year even in the predictable Mediterranean environment.     

Establishment of High-frequency Regeneration System of Explants of Alfalfa

The cotyledon and hypocotyl of eight varieties of alfalfa( Medicago sativa L. )are used to study the effect of different cultivation procedures and genotypes on embryogenic callus and embryoid induction,plant development and transplant of alfalfa.The varieties of alfalfa with high embryoid induction rate and high differentiation rate are screened. A high frequency regeneration system for alfalfa tissue culture is established:which is benifical to the gene transformation of alfalfa.