powder surface area and porosity

Ngày tải lên: 31/05/2014, 01:26

Ngày tải lên: 05/09/2013, 08:40

... characterized by an agricultural land use with farms, mainly cropping rice and fruits. Some of the farms maintain small animal husbandries and fishponds. Surface water, rain water and ground water are used ... problems of the surface water bodies are the high amount of suspended solids and hygieni- cally pollutants. 5. Conclusions and Outlook Regarding the ground water and the surface water quality ... consists of middle to coarse sand. 3. Methods For the appraisal of the surface water and ground water resources water sampling and analyses regarding the chemical and microbiological conditions...

Ngày tải lên: 16/01/2014, 17:20

... JEM-200CX), and selected- area electron diffraction (SAED ). The Brunauer–Emmett – Teller (BET) specific surface area was determined by nitrogen adsorption (BEL Japan, BELSORP-18 Plus). 3. Results and ... °C. 2975S. Pavasupree et al. / Materials Letters 61 (2007) 2973–2977 surface area and pore volume of the sample are about 642 m 2 /g and 0.774 cm 3 /g, respectively. The nanosheet structure after calcinations ... had an average pore diameter about 3– 4 nm. The BET surface area and pore volume of the as-synthesized nanosheet TiO 2 are about 642 m 2 /g and 0.774 cm 3 /g, respectively. The as-synthesized...

Ngày tải lên: 20/03/2014, 13:06

... sections through the cell to observe surface and intracellular staining. Figures 3a-d show the intracellular and surface staining of PBMC in a healthy control and from a septic patient. These images ... transcriptional events and shedding of surface HLA-DR, as well as the regulation of HLA-DR by GM-CSF and an immunomodulatory cytokine. Plasma and PBMC were collected from septic patients and healthy volunteers. ... mRNA production, and/ or post-translational modification of HLA-DR affecting processing to the cell surface. Alternatively, HLA-DR could be cleaved from the monocyte surface and shed into the...

Ngày tải lên: 03/11/2012, 09:57

... 5.8.2 Copyright  2001, Cisco Systems, Inc. 5.8.2: Configuring a Stub Area and a Totally Stubby Area AREA 0 STUB AREA 2 AREA 1 Lo0 192.168.3.1 /24 S0/1 192.168.208.1 /30Fa0/0 192.168.1.3 /24 Lo0 ... its ABR for all nonlocal area traffic, you decide to filter Type 3 and Type 4 interarea routes from Area 2. To do this, you must configure Area 2 as a totally stubby area, which is a Cisco proprietary ... following commands on SanJose3, the ABR, to configure Area 2 as a totally stubby area: SanJose3(config)#router ospf 1 SanJose3(config-router)#no area 2 stub SanJose3(config-router) #area 2 stub...

Ngày tải lên: 27/10/2013, 08:15

... bis-ANS and HSL. The concentrations of bis-ANS used were 1.5 l M and 2.0 lM in (A) and (B), respectively. HSL was phosphorylated with 15 l M ATP in the reaction mix, and mixed with SYPRO Orange, and ... turn- over rate and S 0.5 [11]. In this study, we provide evidence that HSL gains accessible hydrophobic surface area upon PKA phos- phorylation. This gain in hydrophobic surface area presumably ... italic) and pVL1393–HSL [18] as template was digested using XbaI and BssHII and subcloned into pVL1393–HSL. PCR was performed using Vent polymerase (New England Biolabs, Ipswich, MA, USA), and the...

Ngày tải lên: 18/02/2014, 11:20

... specific surface area and porosity of the as-synthesized materials can be up to 112 m 2 g À1 and 81%, respectively. The coated amorphous SiC nanowires have uniform structure and smooth surfaces. ... nano- wires. The specific surface area, median pore diameter (volume), median pore diameter (area) , average pore diameter (4 V A À1 ), bulk density, apparent density, and porosity of the fabricated ... turn-on field and threshold field are about 2.9 and 6.7 V mm À1 , respectively. This kind of materials may simultaneously possess the unique properties of porous materials, SiC, and nanowires. And they may...

Ngày tải lên: 16/03/2014, 15:17

... 1(b). On the other hand, the treatment at 200 and 230 ◦ C resulted in the formation of tubular TiO 2 of 1 ␮m and 50 nm in length and diameter, respectively, as shown in Fig. 1(c) and (d). With increasing ... [12], batteries [13], and pigments [14]. For gas sensor applications, it has been reported that TiO 2 with a large surface area shows good sensing properties to CO [7],H 2 [8], and NO x [9]. The ... high specific surface area and thus TiO 2 nanotubes prepared by a hydrother- mal method have been successfully utilized for photocatalysis [24], dye-sensitized solar cells [25], and lithium-ion...

Ngày tải lên: 19/03/2014, 16:48

... HC and CO in the exhaust gas as shown in Fig. 8b and is reduced to N2. In this way, when the NO2 on the surface of the platinum Pt reacts with HC and CO in the reducing agent, and ... absorbent and quickly reduced to N2. The HC and CO component in the exhaust gas immediately react with the 0, or 02- on the platinum Pt and are oxidized, and subsequently if the HC and CO ... temperatures. This enhances reduction of the alumina surface area and sintering of the noble metals resulting in losses of effective catalytic area. support pore structure linteractions (MetaVmetal...

Ngày tải lên: 28/03/2014, 18:20

... 1743-3533 (on-line) 6 Surface Effects and Contact Mechanics IX Surface Effects and Contact Mechanics IX Editors: J.T.M. De Hosson University of Groningen, The Netherlands C.A. Brebbia Wessex ... 1743-3533 (on-line) Surface Effects and Contact Mechanics IX 25

Ngày tải lên: 06/05/2014, 11:36

Ngày tải lên: 01/06/2014, 11:10

Ngày tải lên: 21/06/2014, 03:20

Ngày tải lên: 21/06/2014, 06:20

Ngày tải lên: 21/06/2014, 20:20

Ngày tải lên: 22/06/2014, 01:20

... Cellular Telephony • Third Generation (3G) – Intended to be a uniform and global standard for cellular wireless communication • Standard data rates – 144 Kbps for a mobile user – 386 Kbps for a slowly ... network and the wired telephone world – Controls all transmitters and base stations 3 Cellular Telephone Applications • Digital cellular telephones can be used to: – Browse the Internet – Send and ... corporate networks – Watch television or on-demand movies – Take and transmit pictures and short movies – Locate family members and employees using GPS 24 Java • Java programming language – Developed...

Ngày tải lên: 13/09/2012, 10:52

... and Hosoda T.: Water surface profile analysis of open channel flows over a circular surface. Journal of Applied Mechanics, JSCE, Vol. 8, pp 847-854, 2005. 5. Anh T. N. and Hosoda T.: Free surface ... curvilinear coordinates for prediction of flow pattern in meandering channel with 60 o and 90 o bend, and also with compound meandering channel. In this study, the Cartesian velocity components ... the model predicted the water surface profile and velocity distribution well in simple channels, and the predictions of the model in main channel of compound meandering channel were also in...

Ngày tải lên: 06/11/2012, 10:35

Ngày tải lên: 05/09/2013, 09:08

Ngày tải lên: 05/09/2013, 09:08