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Search Results: 1 - 10 of 58364 matches for " 郭闻州 "
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微粒和析晶混合污垢模型
徐志明,张仲彬,,周立群
工程热物理学报 , 2006,
Abstract: 假设微粒和析晶污垢独立存在,而结晶过程同时发生在换热面和微粒表面,据此建立了一个微粒和析晶混合污垢热阻值的分析模型。并通过MgO微粒污垢和CaCO3析晶污垢实验验证了模型的正确性。
恒压恒频PWM变换器nk±m次谐波重复控制策略
,周克亮,杨云虎
电工技术学报 , 2011,
Abstract: 提出了一种nk±m次谐波重复控制器用于提高恒压恒频PWM变换器系统的性能。该重复控制器可针对不同场合的需求,赋予n和m以不同的数值,从而实现对任一指定的nk±m次谐波的无静差跟踪或扰动抑制。与常规重复控制器相比,该重复控制器具有时间延迟小、收敛速度快、数字实现所需的内存单元少、表达式通用等优点。最后,给出了一个将nk±m次谐波重复控制器应用于带三相整流负载的三相PWM逆变器的例子,实验结果证明了其有效性。
sds电泳半干新技术
尧君?,弢?
生物化学与生物物理进展 , 1994,
Abstract: 在sds薄层凝胶水平电泳中应用半干技术缩短了电泳时间,提高了分辨率,简化了操作,免除经常大量配制电极缓冲液的麻烦.用滤纸条代替电极缓冲液和纸桥或代替凝胶条的新技术更方便.
组合蓄能独立式风力发电系统
,周克亮,程明,王立娜
电工技术学报 , 2011,
Abstract: 提出了一种全新的采用组合蓄能方式的独立式风力发电系统。该风力发电系统采用电解水制氢与蓄电池相结合的组合蓄能方式,能够实现连续稳定自治运行且零排放、无污染,克服了采用单一蓄电池蓄能方式的系统或无法连续运行或需借助有污染的柴油机组辅助发电、或因采用泻荷装置而使系统效率过低等一系列问题。为优化系统的运行并准确估算系统元件的规格,还提出了组合蓄能系统的能量优化管理策略以及完整的系统配置设计方法。仿真研究验证了所提组合蓄能风电系统及其优化运行和设计方法的合理性与有效性。采用组合蓄能独立式风力发电系统可实现运行、环保、成本等综合效益的优化。
组合蓄能离网型自治光伏发电系统优化运行与配置设计
王立娜,周克亮,,程明
电网技术 , 2009,
Abstract: 提出了采用电解水制氢与蓄电池相结合的组合蓄能离网型自治光伏发电系统及其优化运行与配置设计方法。该系统不仅能消除太阳能与用户负荷间供需失配的影响,且能实现运行和成本的优化。以不同纬度地区的2个用户为例,对组合蓄能光伏发电系统和常规蓄电池蓄能光伏发电系统进行了对比计算与仿真。仿真结果表明,与常规系统相比,组合蓄能系统不仅能够绿色自治运行,提供不间断的电力供应,且成本较低、体积较小、重量较轻等。
Effects of pig manure-biogas slurry application on soil ammonia volatilization and maize output and quality
猪粪沼液施用对土壤氨挥发及玉米产量和品质的影响

吴华山,德杰,马 艳,常志
中国生态农业学报 , 2012,
Abstract: Pig manure-biogas slurry contains nutrients such as N, P, K, amino acid, humic acid, etc., and poses eutrophication of water bodies if not efficiently used. Using biogas slurry as a substitute for chemical fertilizers is best alternative practice. The aim of this study was to analyze the effects of pig manure-biogas slurry on soil ammonia volatilization and maize output (quantity and quality). A set of spring and summer maize field experiments were carried out to study the variations in the contents of soil available N, P and K and ammonia volatilization after application of pig manure-biogas slurry. The results showed that soil ammonia volatilization after base fertilization was higher in summer maize than in spring maize. Soil ammonia volatilization was significantly higher under biogas slurry application than under chemical fertilization. Also ammonia volatilization increased with increasing biogas slurry application rate. Ratio of N loss by ammonia volatilization to fertilizer N was 0.17%~2.16%, with an average of 0.88%. In spring maize season, treatment of 100% chemical fertilization, and treatment of 50% biogas slurry N with 50% chemical N yielded 901.55 kg·667m-2 and 892.71 kg·667m-2 maize, remarkably higher than the outputs from other treatments. Dissoluble sugar content under 100% chemical fertilization treatment was 103.69 g·kg-1, much lower than that from other treatments. Also dreg ratio of 100% chemical fertilization treatment was 9.87%, significantly higher than that of other treatments. The other parameters of maize quality were not remarkably different among treatments. Summer maize output was lower than that of spring maize. Summer maize yield of 100% chemical fertilization treatment was 523.47 kg·667m-2, the highest in all the treatments. The yield of treatment of 50% biogas slurry N with 50% chemical N was 513.41 kg·667m-2, the second highest in all the treatments. Maize quality under 100% chemical fertilization treatment was higher than that under 100% biogas slurry treatment. However, no significant difference was noted in maize quality under treatment of 50% biogas slurry N with 50% chemical N. The results suggested that 50% chemical fertilizer N was replaceable with biogas slurry N in maize cultivation.
猪粪沼液施用对土壤氨挥发及玉米产量和品质的影响
吴华山,德杰,马 艳,常志
中国生态农业学报 , 2012,
Abstract: 猪粪沼液含有大量的养分,如氮、磷、钾、氨基酸、腐植酸等,但如果不及时施用,也会带来水体富营养化问题。沼液替代化肥是目前最有效的利用方式。采用田间试验方法,在春、夏两季玉米上,研究了猪粪沼液不同用量与不同运筹对土壤氨挥发损失以及玉米产量、品质等的影响。结果表明,夏玉米基施猪粪沼液氨挥发量大于春玉米,沼液的氨挥发量明显大于化肥,且沼液施用量越大,氨挥发量越大;由氨挥发导致的氮素损失量占施肥量的0.17%~2.16%,平均为0.88%。在春玉米中,单独施用化肥以及化肥与沼液各50%配施处理的产量分别为901.55kg·667m-2和892.71kg·667m-2,显著高于其他处理;纯化肥处理可溶性糖为103.69g·kg-1,显著低于其他处理;纯化肥处理皮渣率为9.87%,显著高于其他处理;其他品质指标各处理间无显著差异。在夏玉米中,总体产量不如春玉米,纯化肥处理产量为523.47kg,显著高于其他处理,化肥与沼液各50%配施处理的产量仅次于纯化肥处理,为513.41kg。纯化肥处理的玉米品质总体上高于纯沼液处理,但沼液和化肥各50%处理玉米品质与纯化肥处理无明显差异。可见,对玉米植物而言,以50%沼液替代化学肥料,在技术上可行,可以获得与化肥处理相同的玉米产量与品质。
籼粳杂交F1高效花药培养技术体系的建立
书巧,唐海娟,,张红生
南京农业大学学报 , 2006, DOI: 10.7685/j.issn.1000-2030.2006.02.001
Abstract: 以黑壳子粳/苏御糯、铁杆青/苏御糯和薄稻/苏御糯3个籼粳杂交F1及其亲本和粳稻品种武运粳8号为试验材料,在M8基本培养基中,加入不同浓度的植物激素类物质和有机营养物,建立籼粳杂交F1高效花药培养技术体系。结果表明M8+2mg.L-12,4-D+1mg.L-1NAA+0.2mg.L-1KT为最佳诱导培养基,籼粳杂交F1花药愈伤组织诱导率达4.1%~4.5%;在该培养基中添加水解酪蛋白或酵母提取物,能明显提高诱导率,增幅达20.5%~27.3%;M8+2.5mg.L-16-BA+0.5mg.L-1KT为最佳分化培养基,籼粳杂交F1的愈伤组织绿苗分化率达14.3%~25.0%。
对西北内陆河地区可持续发展问题的思考
郑利民,姜丙,卫新
人民黄河 , 2006,
Abstract: ?水资源是维持荒漠绿洲生态系统的决定因素,随着西北内陆河地区水土资源开发利用规模的扩展,多数河流水量锐减,水质恶化,植被退化,给该地区可持续发展带来了严重的影响.从内陆河地区水资源的条件入手,分析了水资源与人口、经济、生态环境、产业结构等方面的协调发展关系,指出应通过行政、经济、技术和法律等手段,处理好生态环境、经济发展与水资源条件的相互关系,提高水资源利用的整体效益.
肿瘤物理免疫的哲学思考与实践—《毫米波免疫强化治疗系统》的设计思想
Philosophical Thinking and Practice of Tumor Physical Immunity—Design Thinking of “Millimeter Wave Therapy to Strengthen the Immune System”
 [PDF]

黄文
Open Journal of Nature Science (OJNS) , 2015, DOI: 10.12677/OJNS.2015.33008
Abstract:
本文对当代癌症各种治疗方法的反思中,以当代哲学思维和传统医学观为基础,提出需解决表观遗传紊乱来抑制肿瘤发生和发展,而物理免疫正是抓住细胞变异就掌握到了抗癌关键。本文应用现代物理技术,从新产品毫米波免疫强化治疗系统的开发,介绍物理免疫系统的设计思想。
In the reflection on the contemporary cancer of various treatment methods, with the thinking of contemporary philosophy and traditional medicine concept, this paper proposes that it’s neces-sary to solve the epigenetic disorders to inhibit the occurrence and development of malignant tumor, while physical immunity grasps anti-cancer key by focusing on cell mutation. This paper applies modern physics technology and starts with new product development of Millimeter wave immune enhancement therapy system to introduce design ideas of physical immune system.

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