properties and mode of action of lubricants

... compounding includes the science of elastomer chemistry and the modification of elastomers and elastomer blends by addition of other materials to meet a set of required mechanical properties It is therefore ... on the understanding of the chemistry of raw materials and compounds Examples of advances in materials technologies over recent years include Commercialization of functionalized and coupled, solution-polymerized ... polyethylene-wrapped bales of standard weight They can be prepared to prevent degradation of the rubber during storage, handling, and transportation They have a standard bale size to enable ease of transport...

Ngày tải lên: 27/06/2014, 06:20

... performance in terms of scalability, storage overhead, key-sharing probability, and resilience Preliminaries, Models, and Assumptions 3.1 Key Space Models The two key space models for establishing ... are ρ and T0 , where ρ determines the fraction of service nodes to be deployed, and T0 determines the serving area of a service node In our simulation study, we measure the performance of the ... [22] D Liu and P Ning, “Location-based pairwise key establishments for static sensor networks,” in Proceedings of the 1st ACM Workshop on Security of Ad Hoc and Security of Ad Hoc and Sensor...

Ngày tải lên: 21/06/2014, 20:20

... Estimation of the state of the bacterial cell wall by fluorescent in situ hybridization Appl Environ Microbiol 64, 3059–3062 [18] Bond, P.L., 1999 Identification of some of the major groups of bacteria ... American Society of Microbiology, Washington, DC, pp 373–381 [35] Erhart, R., 1997 Development and use of fluorescent in situ hybridization for the detection and identification of Microthrix parvicella ... Ardern, E., 1914 Experiments of the oxidation of sewage without the aid of filters J Soc Chem Ind 33, 523–539 [13] Arnoldi, J., 1992 Species specific assessment of Mycobacterium leprae in skin...

Ngày tải lên: 30/10/2012, 11:02

... Situ hybridization PCR : Polymerase Chain Reaction ELISA : Enzyme Linked Immuno Sorbent Assay RT – PCR : Reverse – transcription polymerase chain reaction PBS : Phosphate Buffered Saline TBS : ... Trƣờng Và Phòng Ngừa Dịch Bệnh Thủy Sản Khu Vực Nam Bộ KHV : Kính hiển vi FAO : Food and Agriculture Organization of the United Nations RT : Room temperature ĐBSCL : Đồng sông Cửu Long OD : Optimal ... phút 30 phút 30 phút Cồn tuyệt đối (3) Cồn tuyệt đối (2) 30 phút Chloroform (1) 1,5 1,5 30 phút Cồn tuyệt đối (1) 30 phút Chloroform (2) Cồn 95% (3) 30 phút Paraffin (1) Paraffin (2) giờ Sơ đồ 3.1:...

Ngày tải lên: 05/11/2012, 14:01

... Peer-to-Peer models rely on the power and bandwidth of participants They form ad hoc connections between nodes for sharing all kinds of information and files Peer-to-Peer discards hierarchical notions of ... clicks and switch after random page a random surf rider’s model The page PageRank value reflection random surfrider will land in that page through the click in the link opportunity May understand ... number of occurrences of the considered term (ti) in document dj, and the denominator is the sum of number of occurrences of all terms in document dj The inverse document frequency is a measure of...

Ngày tải lên: 20/11/2012, 11:36

... transfer of a software upgrade from software developers to users needing the upgrade), streaming of continuous media (e.g., the transfer of the audio, video and text of a live lecture to a set of distributed ... of the tree and the centroid of a tree can be calculated in linear time A median of a tree that is proved equivalent to the term w-centroid of a tree We briefly list the relevant properties of ... with a small number of recipients, it will not scale to the cases of hundreds or thousands of recipients, the amount of information in solving datagram would swamp the amount of data actually carried...

Ngày tải lên: 23/11/2012, 15:03

... microprofiles of O2, NH4+, NO2-, and NO3- in the autotrophic nitrifying biofilm (B) The distribution and magnitude of the estimated specific rates of net consumption and production of NH4+, NO2-, and ... organization of nitrifying bacterial populations and the in situ activity of these populations within the biofilms was discussed Microsensors For analysis of microbial structure and function (activity) of ... only net chemical profiles, and the spatial resolution is also above a single-cell level To address the question of the higher abundance and activity of SRB in oxic zones of biofilms (Okabe et al.,...

Ngày tải lên: 05/09/2013, 08:40

... 2004 [8] D Katabi, M Handley, and C Rohrs Congestion control for high bandwidth-delay product networks Proceedings of ACM SIGCOMM’02, August 2002 [9] I Stoica, S Shenker, and H Zhang Core-stateless ... http://www.iponair.de/ [18] D-M Chiu and R Jain Analysis of the Increase and Decrease Algorithms for Congestion Avoidance in Computer Network Computer Networks and ISDN Systems, 17:1-14, 1989 [19] ... High BandwidthDelayProductNetworks,www.ana.lcs.mit.edu/ dina/XCP [16] S Floyd, M Handley, J Padhye, and J Widmer Equation-based congestion control for unicast applications In Proceedings of ACM...

Ngày tải lên: 24/12/2013, 07:16

... The pattern is similar to that of the residue distribution both in the contact and in the whole surface The dependence of the accuracy values and of the fraction of total residues with a given ... implicit model of interaction can be tested by additional mutations, by solving the structure of some of the complexes or by other experimental means CONCLUSIONS We have analysed the possibility of ... classification of proteins database for the investigation of sequences and structures J Mol Biol 247, 536–540 Kabsch, W & Sander, C (1983) Dictionary of protein secondary structure: pattern of hydrogen-bonded...

Ngày tải lên: 21/02/2014, 15:20

... Spectrum of the substrate (B) Spectrum after 36 h Small amounts of acetealdehyde and 3-ketopropanoate were identified by the addition of standard solutions Larger amounts of acetate and 3-hydroxypropanoate ... mM and mM) to the biotransformation The 0.5 mM amount led to a direct consumption of the acetaldehyde added and the production of equal amounts of 3-hydroxypropanoate, while the concentration of ... excludes virtual reactions and does not affect growth rates by means of isotopic effects [16] Addition of defined amounts of D2O, however, is useful to determine the incorporation of protons from...

Ngày tải lên: 08/03/2014, 08:20

... the ITU terrain model, the Durkin’s model, the Okumura model, the Hata’s model, the PCS extension of the Hata model, the Walfisch and Bertoni model, and the wideband PCS microcell model [397] 18 ... because of a variety of factors, the decrease in speed is very random To characterize the mean and variance of this randomness, the log-scale propagation model and log-normal shadowing model are ... communications and networking This part of the book deals with the modeling, design, and analysis of game-theoretic schemes in communications and networking applications Different game models that...

Ngày tải lên: 16/03/2014, 20:20

... the decomposition of PANI As seen from the TGA curves, the rate of weight loss of PANI (curve a) is much fast, the residue of PANI is 44.06%; while the rate of weight loss of PANI/magnetite nanocomposites ... decomposition of the polymer chain of PANI at higher temperature (

Ngày tải lên: 20/03/2014, 13:04

... of about 16,000 turns of local officials and farmers relating to in situ conservation of crop genetic resources, but no any program or activities has gained the full results of the contents of ... Because of the risk of plant genetic erosion is rapidly increasing, the insitu conservation of genetic resources of native plants has became imperative However to date, insitu conservation of crop ... conservation, and there are no conservation areas/ sites of which is maintained and sustained operation In this context, the appreciation of the actual status, indicate the limitations and reasons,...

Ngày tải lên: 23/03/2014, 17:21

... between A and C or A and E in Fig 1.2 Nodes B and D must, therefore, serve as intermediate routers for communication between A and C, and A and E, respectively Indeed, a distinguishing feature of ad ... Chapter The issues of efficient use of bandwidth and the hidden/exposed terminal problem have been studied exhaustively and are well understood in the context of accessing and using any shared ... remainder of the session Support for EAP and 802.1Â delivers on the promise of WEP, providing a centrally managed, standards-based, and open approach that addresses the limitations of standard 802.11...

Ngày tải lên: 25/03/2014, 12:07

... in both human and mouse skin [16,19] These studies have provided new insight into the substrate specificity of Tgases and have expanded the range of application of the enzyme reaction [20] TGase ... interaction of E51 with the enzyme to form an intermediate between the glutamine residue in the substrate and the cysteine residue in the active site pocket of TGase Assessment of reactivity and ... in the same reaction condition at incubation time of 10 The closed and open symbols represent the reactions for pepE51 and pepE51QN, respectively Data represent the means ± SD of triplicate samples...

Ngày tải lên: 29/03/2014, 21:20

... Results General conguration and FRET spectra of stFRET and its variants Figure is a diagram of stFRET geometry as deduced from the procedure described in Modeling and calibration in the Experimental ... amino acid sequence and the segments of the helix linker that we modied Deletion of 18 amino acids eliminates ve turns of the helix, and a nine amino acid deletion eliminates two and half turns Figure ... the emission spectrum of stFRET with excitation at 433 nm There are peaks at 475 nm Fig Geometry of stFRET D and A are donor and acceptor dipole vectors, and r is the length of the linker The three...

Ngày tải lên: 30/03/2014, 04:20

... dead volume of inlet tubes, Ws and Wd are the weight of water column after and before saturation, respectively, ρw is the density of water, r and l are the radius and length of the sand-packed ... trapped nanofluid is shown in Figure 3-6 33 Figure 3-6: Visual comparison of trapped nanofluid sample and 142.5 to dilution of original nanofluid The absorbance spectra of the trapped nanofluid and ... 3-5: Photograph of trapped nanoparticles after the removal of the magnetic trap.33 Figure 3-6: Visual comparison of trapped nanofluid sample and 142.5 to dilution of original nanofluid ...

Ngày tải lên: 30/03/2014, 20:20