Tài liệu Báo cáo " Preparation and characteristics of LiF:Mg,Cu,Na,Si thermoluminescent material " pptx

... VNU Journal of Science, Mathematics - Physics 23 (2007) 225-231 Preparation and characteristics of LiF:Mg,Cu,Na,Si thermoluminescent material Vu Thi Thai Ha 1 , Nguyen ... somewhat expand. The dosimetric properties of the powder were studied. The main dosimetric peak of LiF:Mg,Cu,Na,Si appeared in the range of 227− 247 o C and the ratio of the height of the main...

Ngày tải lên: 13/02/2014, 04:20

... Introduction TiO 2 is one of the most attracted materials in nanoscience and nanotechnology because of having a lot of interesting properties from fundamental and practical point of view [1,2,3]. Although ... photosensitivity and SnO 2 conductivity. 2. Experimentals Preparation of TiO 2 films: The principle of TiO 2 preparation in this work was based on pyrolysi...

Ngày tải lên: 13/02/2014, 04:20

... Ecosystem of West Lake The ecosystem of West Lake is rather diverse with 232 species of plant, 141 species of phytoplankton, 43 species of zooplankton, 11 species of benthos and about 33 species of ... there is a need of estimation and prediction of eutrophication. One of effective tools for accessing and predicting is the use of mathematical models. 2. Resea...

Ngày tải lên: 13/02/2014, 12:20

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Ngày tải lên: 14/03/2014, 13:20

... loops and multiple edges. 44 consequences: it makes the system vastly more effi- cient in terms of time, at the cost of rising memory demands, and it models time linearly, in contrast to ABL and ... interchangeable part of two sentences. Instead of explicitly comparing each sentence with all other sentences, it incrementally builds up a table of type/expression pairs, and on...

Ngày tải lên: 20/02/2014, 12:20

... red pigment and cement (white and black cement) at the ratio of 1:1:1 (see table 2). The weight of a cement brick is about 3kg of which the ratio of cement and raw material of 1:2. Cement ... ratio of treated sludge and raw material varied as 1:1; 1:3; 1:5; and 1:10. In the latest, treated sludge was mixed with red pigment and cement (white and black cement)...

Ngày tải lên: 12/02/2014, 17:20

... respect of semantics, “glad” and “pleased” have one of their senses of denoting the feeling of pleasure when something good has happened. “Cheerful” has one of three senses suggesting one of the ... intransitive and mono-transitive verb in the first sense of “give shouts of joy, praise, support and encouragement (to somebody or a team or a cast of performers)”....

Ngày tải lên: 12/02/2014, 20:20

... presence of 100 lM MPTP and 50 lM dopamine (F), in the presence of 200 lM MPTP and 50 lM dopamine (G), in the presence of 100 l M MPP + and 50 lM dopamine (H) and in the presence of 200 lM MPP + and ... solu- tion of ThT and the fluorescence intensity of the solu- tion was measured at 482 nm. Figure 4A shows the kinetics of aggregation of a-synuclein in the presence...

Ngày tải lên: 14/02/2014, 19:20

... the affinity of 14-3-3 for Bax and Bad and translocation of Bax and Bad to mitochon- dria independently of caspase activation [77,87]. Phosphorylation of caspases Phosphorylation of caspases switches ... activity of an isoform of PP1, PP1a [3]. Similarly, activation of caspase-8 and -3 is regulated through their phosphorylation and dephosphorylation. Phosphorylation...

Ngày tải lên: 14/02/2014, 22:20

... ARTICLE Roles of AP-2 transcription factors in the regulation of cartilage and skeletal development Ann-Kathrin Wenke and Anja K. Bosserhoff Institute of Pathology, University of Regensburg, ... treatment of the chick face with RA, and this is accompanied by an increase in apoptosis [73]. The authors of this study ascribe the regulation of outgrowth of limb buds and pa...

Ngày tải lên: 16/02/2014, 09:20