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| 1 | Synthesis of potassium sodium niobate powders using an EDTA/citrate complexing sol-gel method显示文摘Potassium sodium niobate(KNN) powders were synthesized by a modified sol-gel method,using as starting chemicals potassium carbonate,sodium carbonate,and niobium hydroxide,and,as esterification and chelating agents,respectively,ethylene glycol(EG) and ethylene diamine tetraacetic acid(EDTA)/citrate.The effects of citric acid(CA),EG,and EDTA on the stability of the precursor sol were systemically investigated.The powders and gels were characterized by X-ray diffraction,scanning electron microscopy,Fourier transform infrared spectroscopy,and thermogravimetric analysis-differential scanning calorimetry(TGA-DSC).The results indicated that a stable precursor sol was formed when n(CA):n(Mn+)=3:1,n(EDTA):n(NH4OH)=1:3.5,and n(CA):n(EG)=1:2.The xerogel was calcined at 500-950℃ to prepare the KNN powder.Pure KNN perovskite phase with a cube-like structure was synthesized at 850℃ from the precursor sol for a K/Na molar ratio of 1.2.The formation mechanism of the KNN perovskite phase was also discussed. | Yang Cao Kongjun Zhu Hongjuan Zheng Jinhao Qiu Honghui Gu | 2012 | Particuology2012，10，6： | 2 |
| 2 | Differentiation characteristics and influencing factors of ecological land rent among provinces in China显示文摘生态的陆地租金是资源缺乏生产的过量利润,并且也是为测量资源缺乏的社会、经济的效果的重要指示物。这份报纸,由在中国计算所有省的各自的生态的陆地租金年 2002 和 2007,并且与软件程序 ArcGIS 和 GeoDA 的帮助,分析生态的陆地租金的空间区别特征;然后,在省之中的生态的陆地租金区别的影响因素用传统的回归和空间关联分析的方法被检验。下列结果被获得:首先,生态的陆地租金每在中国输出联合起来显示出在 Hebei 和河南省省在西南、东北的省,和高度是低的稳定的分发特征。也在东方省在中央、西方的省,和一个减少的省有一个增加的趋势。一般来说,生态的陆地租金的空间分发相当每在中国输出联合起来被散布。第二,全部的生态的陆地租金显示出重要空间聚集特征,,特别地在拥有生态的陆地租金的高全部的数量的中国的省趋于邻近对方与低全部的数量,和空间差别特征做那些东方,中央、西方的省被区分。Bohai 边界,长江三角洲和珀尔河三角洲被显示高度正在聚类全部的生态的陆地租金的区域,当西方的省以全部的数量有很低的生态的陆地租金时。第三,人口分发,经济水平和工业结构都是重要的影响在中国在省之中影响生态的陆地租金区别的因素。而且,人口密度,都市化水平,经济密度,人均的消费水平和 GDP 人均都被显示是断然与全部的生态的土地有关租租金和这些因素,它显示空间聚类在生态的土地之间存在。然而,也在生态的陆地租金和农业产量百分比之间有否定关联,显示空间散布在生态的陆地租金和农业产量百分比之间存在。 | LONG Kaisheng ZHAO Yali ZHANG Honghui CHEN Ligen LU Fangfang GU Yuanyuan | 2013 | Journal of Geographical Sciences2013，23，3： | 2 |
| 3 | Anti-fatigue Effect of L-arginine Complex Preparation on Mice显示文摘Objective:To investigate the anti-fatigue effect of L-arginine complex preparation on mice.Methods:The experimental mice were divided into a blank group,low dose group,medium dose group and high dose group.L-arginine complex preparation mice were intragastrically administered for 30 days,and the mice were tested for exhaustive swimming time.At the same time,contents of plasma lactic acid,lactate dehydrogenase,urea nitrogen and hepatic glycogen were measured.Results:Compared with the blank control group,the weight-bearing swimming time and hypoxia-tolerant survival time of the low,middle and high dose groups was significantly increased(P<0.05).Whereas,the serum urea nitrogen levels and lactose content were significantly decreased(P<0.05).However,compared with the blank control group,the liver glycogen content of the middle and high dose groups was increased significantly(P<0.05),and there was no significant difference in the low dose group.Conclusion:The L-arginine complex preparation has an anti-fatigue function in mice. | Qian Tan Xiaodong Dong Junfeng Zhai Yaxian Gu Honghui Hao Wen Ren Chuanbao Gong Chengqiang Yin | 2019 | Proceedings of Anticancer Research2019，3，1： | 0 |
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