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A new lignan glycoside was isolated from the n-butanol extract of the roots and rhizomes of Sinopodophyllum emodi.On the......
The metal-organic chemical vapor deposition(MOCVD) growth of AlGaN/GaN distributed Bragg reflectors (DBR) with a reflect......
Background Since there are a complex anatomic structure and vital function in the high cervical spinal cord, it is diffi......
Inhibition of Ageratina adenophora on Spore Germination and Gametophyte Development of Macrothelypte
Allelopathy of Ageratina adenophora plays an important role in its invasion. However,we have little knowledge of its all......
With environmental and food safety issues becoming one of the greatest concerns of the public, active plant compounds pl......
Zinc oxide is a wide bandgap (3.37 eV) semiconductor with a hexagonal wurtzite crystal structure. ZnO prepared in nanowi......
An algebraic complete decoding for double-error-correcting binary BCH codes of primitive lengthis derived.The decoding ......
由真菌类病原菌可可毛色二孢(Lasiodiplodia theobromae)感染桑树根部引起的桑树根腐病是广西蚕区桑园新发现的一种桑树根部病害.......
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In the present experiment, wheat seedlings (Trticucum aestivum L.) were grown on a purple soil withvarious fertilizer tr......
Through a pot culture lanthanum nitrate was applied to maize seedlings grown in a red loamy soil to investigate the phys......
Chinese iris (Iris lactea Pall. var. chinensis (Fisch) Koidz.), a robust iridaceous plant, is widespread in arid and sem......
What is conveyed in Chen Lixin’s figure paintings is often the physicality of the farming lifestyle in north China.Perh......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
Differential Responses of Water Uptake Pathways and Expression of Two Aquaporin Genes to Water-Defic
Water-deficit(WD) is a major abiotic stress constraining crop productivity worldwide. Zhenshan 97 is a drought-susceptib......
Dear Editor,Proper development of plant roots is critical for primary physiological functions,including water and nutrie......
本文用压力室法测定了杉木、马尾松一年生裸根苗的水分关系参数,并研究了晾晒失水对两树种根生长势以及造林成活率的影响.结果表明......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
Fine Root Patterning and Balanced Inorganic Phosphorus Distribution in the Soil Indicate Distinctive
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
目的:观察评估残冠、残根使用玻璃纤维树脂桩核联合钯银烤瓷冠修复与铸造钯银金属桩核联合钯银烤瓷冠修复的临床效果。方法:选用新......
Two allelopathic rice accessions, PI312777 and Allelopathyl, significantly suppressedthe growth of associated weeds in t......
Reservoir volume optimization and performance evaluation of rooftop catchment systems in arid region
This study evaluated the performance of rooftop catchment systems in securing non-potable water supply in Birjand, locat......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
2008年6月,民政部将“全国城乡基层社会组织改革发展观察点”工作任务部署给青岛市,市委、市政府高度重视,将基层社会组织工作纳入......
Fine Root Patterning and Balanced Inorganic Phosphorus Distribution in the Soil Indicate Distinctive
Plants have diverse strategies to cope with phosphorus (P) deficiency.To better understand how maize responds to P defic......
目的 通过现代有限元方法研究牙周膜上的静平衡应力状态.方法 提出了两种用于分析牙周膜应力状态的有限元方法,把牙周膜看做足整个......
The authors investigate the completeness of the system of eigen or root vectors of the 2 x 2 upper triangular infinite-d......
为探究植被护坡固土机理,首先进行“裸露边坡”和“植被边坡”的室内模型暴雨对比试验,进一步对3种速生草本植物的护坡稳定性进行......
中国传统民居建筑营造方式和建材选择多因地制宜,造就了丰富多彩的建筑屋面覆材形式,木、竹、草等植物材料作为屋面覆材在我国传统......
为促进重庆烤烟早生快发,以云烟87为试验材料,采用光照培养箱盆栽试验研究了12℃下壳聚糖、萘乙酸+吲哚丁酸、复硝酚钠+海藻酸钠、......
在自然种植条件下研究了强化感水稻品种“P1312777”不同叶期（3～6叶）、不同器官（根、茎、叶）水浸提液对稗草根长的抑制率，比较了不同极性......
１ＩｎｔｒｏｄｕｃｔｉｏｎＳｉｎｃｅｆｉｒｓｔｐａｐｅｒｐｕｂｌｉｓｈｅｄｉｎ１９５８，ｃｏｍｐｕｔｅｒｓｉｍｕｌａｔｉｏｎｔｅｃｈｎｉｑｕｅｆｏｒｒｏｏｍａｃｏｕｓｔｉｃｓｈａｓｄｅｖｅｌｏｐｅｄａｌｏｔ．Ｉｔｐｌａｙｓａｖｅｒｙｉｍｐｏｒｔａｎｔ.........
本人在温州从事多年结构设计,并且设计了大量的地下室,这里简单介绍该地区的设计经验。...
以河阴石榴茎尖为材料,对其组织培养快繁体系进行了研究。结果表明,河阴石榴茎尖的最适增殖培养基为MS＋1.0 mg/L 6-BA＋0.30mg/L NAA,......
针对现有的暂态电能质量扰动识别过程复杂、易受噪声影响的问题，提出基于CWD的谱峭度与有效值相结合的电能质量扰动识别算法。该算......
文中以ANSYS Fluent与Gambit软件为例,介绍导电滤槽技术与流体耦合有限元分析在亚临界320MW机组的应用。......
6 d龄紫花苜蓿（Mesicago sativa L.）幼苗在0、200 mmol/L NaCl处理9 d后,采用双向电泳分别分离了其根部蛋白组. 最终每块胶中有超过9......
以伊犁州直哈萨克族女性领导干部为研究对象,对伊犁州直38位哈萨克族女性领导干部进行访谈,借助Nvivo质性研究软件,运用扎根理论对......
采用连续钻取土芯法在生长季内对东北林业大学帽儿山实验林场17年生水曲柳人工林根系取样，研究水曲柳不同直径根系现存生物量、比根......
南京南站屋面结构为双向正交正放网架,面积约为94 032.8m2,周边低、中间高,四周均悬挑于柱外,最大悬挑长度30m,具有跨度大、平面尺......
为研究植被对膨胀土的改良作用,采用细麻绳模拟了不同根系直径和根系排列分布的土体干缩开裂试验,分析了土体中的水平根系、竖向根......
为了解决传统宽煤柱开采回采率低、煤炭资源被浪费等问题,以3045工作面为例,在分析其地质、煤层以及岩层等情况的基础上,分析了该......
Eucalyptus is very recalcitrant to in vitro culture.In this research,an efficient shoot organogenesis system was develop......
以雪果当年生木质化枝条为材料,通过不同基质、激素和浓度的对比试验,探讨基质、激素和浓度对雪果扦插生根的影响。结果表明:以河......
After type A acute aortic dissection(AAD)repair or modified Bentall procedure,uncontrollable bleeding from the anastomot......
以紫荆(Cercis chinensis)、加拿大紫荆(Cercis canadensis)、巨紫荆(Cercis gigantea)和湖北紫荆(Cercis glabra)1年生苗木作砧木......
本文推广了正项级数的几个判敛法,得到了正项级数的几个判敛法则序列....
