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Online since: December 2012
Authors: Hai Lin, Jie Yang, Xiao Liu, Bin Zhai, Zhi Qiang Wang, Xin Zhao
Compared with the diffraction pattern of the powder sample, the peak number of the bulk sample decreased obviously.
The strongest peak corresponding to crystal face also changes from (420) to (444), in the meanwhile, the intensity ratios of peaks on several crystal faces, such as (211), (532) and (642), to that on (420) crystal face increase significantly, demonstrating that the crystalline grains grow with several preferred orientations and a dominant one (444) in the bulk YAG glass ceramics.
The SEM micrograph of cross-section of Sm3+ doped YAG glass ceramics is shown in Fig. 5, and the grain sizes of the YAG crystals are estimated in the range of 3~15mm.
Online since: September 2013
Authors: Mohamad Dasmawati, Shahrom Mahmud, Rabab Khalid Sendi, Hasan Habsah, Seeni Azman, Amna Hassan Sirelkhatim, Siti Khadijah Mohd. Bakhori, Ling Chuo Ann, M. Aizuddin A. Rahman
The Pharma grade ZnO contains many rods and grains whereby the rods are 70-200 nm in diameter and 200-600 nm in length.
The White grade contains mostly ZnO rectangular grains with width of 100-250 nm and length of 150-600 nm in dimension.
A number of studies have suggested, two mechanisms for the interaction between ZnO and bacteria that are (i) the production of increased levels of ROS, mostly hydroxyl radicals and singlet oxygen [10], and (ii) deposition of the ZnO on the surface of bacteria or gathering of ZnO either in the cytoplasm or in the periplasmic region causing disruption of cellular function and/or disruption and disorganization of membranes [11].
Online since: July 2014
Authors: Leinig Antonio Perazolli, Talita Mazon, Gisele Gasparotto, Maria Aparecida Zaghete, José Arana Varela, Gisane Gasparotto
It is possible to observe, Fig. 2, that the grain size and grain boundaries of the Al2O3 substrate influenced the growth of ZnO nanorods arrays.
As the H2 concentration increase, the number of electrons transferred from the gas molecules to nanostructures surface increase and the electrical resistance of the sensor is lower.
Online since: May 2014
Authors: Yan Li Lv, Chun He Xia, Yuan Long Li, Shuang Xiang
At present, there are already a large number of researches regarding the classification and description of the security events.
Wang Wenxia[9] renders 15-tuple description of network security events, that is classs_id, class_sid, category_id, category_sid, src_ip, src_port, dst_ip, dst_port, priority, reliability, startTime, is_collate_attack, is_collate_cluser, is_collate_fine_grained_cluster, id; IODEF[10] adopts three properties---eventID, purpose and restriction to make the description.
In the 15 tuples put forward by Wang Wenxia, reliability, is_collate_attack, is_collate_cluse and is_collate_fine_grained_cluster cannot be obtained from the network security logs.
Online since: June 2014
Authors: Tomiko Yamaguchi, Xian Zeng, Yutaka Ida, Kazumasa Nishio
The hardness crossing the depth of prepared film was measured by Nano-indentation hardness testing device (ENT-110a) with a load of 500mgf, step interval of 20 msec, division number of 500.
Within the coarsening area, the input heat was smaller and the cooling rate was faster, the size of needle-like grains of α' phase was smaller and not easy to be visible as compared with that of acicular structure area.
The acicular martensite α phase owing high density of dislocation in crystal grains can improve the strength of substrate which make it clear for the slight increasement of hardness about acicular area compared with substrate.
Online since: June 2014
Authors: Sheng Qiao, Tan Zhu
But its limitations are also obvious: (a) In the three decades after the reform and opening up in China, the living standard and dietary standards are improved, the grain-based food structure began to change; (b) Regional and even international exchange and cooperation are increasing, the free flow pattern of food and other basic living materials makes the importance of the food supply within the regions decline.
Especially for modern industrialized cities, the land resources are carrying more industrial development and population living needs, namely the size of a certain intensity of human activity, while the land carrying capacity based on grain output has lost its significance.
With the BNA develops and land use intensity increases, the number of patches will increase.
Online since: August 2013
Authors: Lei Zhong, Xin Hao, Hui Zou
The main food crops of this area is rice.In 2010, rice production was about 3747200 tons, which accounting for the national grain yield 1.8%.
Rice as the main grain crops in south of Jiangsu area, which reducing the number of planting area.
Online since: March 2013
Authors: Jun Chen Xu, Quan Zhong Liu
Based on a large number of engineering practice in the long-term, there is obviously insufficient of traditional curing materials in the curing process of the soil, such as lime,cement, fly ash, etc.
The strong-unite-water hang with soil grain firmly, then has great sticky degree, elasticity and sheared strength.
(5) Mixed soil adding cement produce Ettringite, and pullulate with radiate shape between glue grains which lead to increase of macroscopic volume.
Online since: July 2020
Authors: Nafisah Osman, Oskar Hasdinor Hassan, Nurul Waheeda Mazlan, Zakiah Mohamed, Wan Zuliana Wan Zulkifli
However, detail reports on the crystal structure of ceramic materials that being synthesised by a supercritical fluid using HP-HT wise reactor system are reduced to number of studies.
One of the drawback in BZY is the materials have poor sinterability that might effect the low conductivity of grain boundary but the structure is stable because it consist of shorter and stronger Zr-O bond as in agreement with the work reported by Kochetova et al., [13].
Azad et al., “Structural origins of the differing grain conductivity values in defect association †,” Mater.
Online since: February 2008
Authors: Claudio Shyinti Kiminami, Santiago Suriñach, Maria Dolores Baró, Walter José Botta Filho, C. Triveño Rios, Claudemiro Bolfarini
.% Al in a number of alloy systems belonging to metal-transition metal (TM) and rare earth (RE) [4].
This would effectively control grain growth [14].
The fact that the heat released in those transformations (-54.2 J/g) is a little smaller than the heat released during continuous heating (-58.9 J/g), reinforces that the behavior is typical of nucleation and growth of grains.
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