lube separation extractive process

... finished lubricants IV LUBE REFINING PROCESSES The most common processes used to produce lube base stocks in refineries worldwide involve separation processes that is, processes that operate ... primary processes employed to produce lube base stocks; a more detailed discussion of all the processes used by the various refining techniques is given in Section V A Lube Separation (Extractive) Process ... a separation process is basic to understanding lube base stock manufacture Figure 2.3 is a simple diagram of a separation process By comparison, Figure 2.4 shows a simple schematic of a hydroprocessing...

Ngày tải lên: 06/07/2014, 15:45

... mercury lamp and filter sets for FITC, Cy3.5, Texas Red, Cy5, Aqua, and DAPI Images were captured, processed, and analyzed using ISIS mBAND/mFISH imaging software (MetaSystems GmbH, Altlussheim,...

Ngày tải lên: 31/10/2012, 16:57

... correlation of sucrose synthesis and degradation with the process of cold acclimation We conclude that acclimation to low temperature represents a dynamic process, the investigation of which therefore requires ... carbon uptake and sink export To obtain a quantitative measure of how exposure to °C influenced the process of photosynthesis, gas exchange of plants was measured by infrared gas analysis Measurements ... the mathematical model, and standard deviations (SDs) were set as boundaries in the estimation process for model parameters (Fig 4A) As described in Experimental procedures, the rate of assimilate...

Ngày tải lên: 14/02/2014, 22:20

... the duplication of a GATA-transcription factor binding site in the c-T2 promoter, although other processes might also be involved In multicellular organisms, GATA-binding factors play critical...

Ngày tải lên: 07/03/2014, 04:20

Ngày tải lên: 17/03/2014, 13:47

... the process [14] Once the MWCNT powder was placed inside the plasma glow discharge, the treatment was performed at a pressure of 0.1 Torr, using two different powers 30 and 100 W, while the processing ... vehicle and after that annealed in situ at 400 ◦ C for h in ambient atmosphere During the annealing process, the temperature was raised from ambient to 400 ◦ C using a ramp of h In total, six different ... surface (see Fig 2) Therefore, carbon nanotubes are still present in the films after the deposition process and annealing at 400 ◦ C in air It is due to the low proportion of carbon nanotubes dispersed...

Ngày tải lên: 19/03/2014, 16:48

... moisture, heat, and light due to the presence of highly reactive alkoxy (OR) groups In sol-gel processing of metal alkoxides, hydrolysis and condensation reactions occur so rapidly that uniform...

Ngày tải lên: 20/03/2014, 13:04

... 80 ◦ C The pH of the solution was adjusted by a diluted Na2 CO3 aqueous solution in the reaction process After stirring for h, a solid precipitate Ag/FeOOH was formed After digesting the precipitate ... ◦ C, accompanied with an endothermic peak on the DTA curve, which may be due to the dehydration process of physically adsorbed water and the release of attached nitrates in the products In the...

Ngày tải lên: 20/03/2014, 13:04

... on the present experiment results, we have shown that WO3 thin films can be prepared by a sol–gel process [1] T Saito, K Arai, M Matsuyoshi, Bull Jpn Soc Sci Fish 24 (1959) 749 [2] M Egashira, Y...

Ngày tải lên: 20/03/2014, 13:12

... the assays Addition of EDTA or removal of ATP from the reaction mixture abolished the DNA strand separation activity The non-hydrolysable ATP analogue (ATPc-S) also did not support the activity ... the protein displayed approximately 30% ATPase activity at °C This suggests that the DNA strand separation assay in vitro probably underestimates RecD helicase activity at lower temperatures to ... regulatory v DNA sequence It is only known that the purified E coli RecBCDK177Q mutant enzyme is less processive, and has reduced ATPase FEBS Journal 275 (2008) 1835–1851 ª 2008 The Authors Journal...

Ngày tải lên: 30/03/2014, 04:20

... petroleum processing [18] Due to the nature of the starting materials, the ash content of carbon black is very low, frequently well below wt% The carbon blacks are produce by the oil-furnace processes ... blacks are produce by the oil-furnace processes and acetylene processes The most important production method is the furnace black process in which the starting material is fed to a furnace and ... Ideally, this supercritical drying process leaves the gel structure unchanged with no shrinkage of the internal voids or pores [104] The supercritical drying process, however, makes carbon aerogels...

Ngày tải lên: 23/04/2014, 22:32

... were obtained by controlling growth concentration and position via low-temperature hydrothermal process The shape evolution of nanodendrite–nanorod structure was discussed The ZnO film with nanodendrite–nanorod...

Ngày tải lên: 06/05/2014, 13:24

... plasma sterilization during the process and evaluating after In the plasma, a large number of variables influence the whole system between physical and chemical process However, till now no reliable ... reliable methods have been found to access the sterilization during sample processing in plasma Monitoring during the process can be done by measuring changes of reactive species in plasma Reliable ... entire carrier and the formation of thin layer of cells on the carrier’s surface The activation process was also performed by oxygen plasma treatment for s Plasma with the same characteristic...

Ngày tải lên: 18/05/2014, 20:29

Ngày tải lên: 18/05/2014, 20:33

... associated with poor prognosis [17] Cell invasion is a major component of the complex multistep process of tumor metastasis Invasion of malignant tumor cells requires destruction of basement membranes ... field of cancer research The VEGF pathway is well established as an important driving force of this process [25] To date, increasing evidence indicates that tumor-stromal cell interactions have a...

Ngày tải lên: 18/06/2014, 16:20

... with the typical plasma processes [10-12] The highly transparent UNCD films were grown directly on glass substrates with a low glass transition temperature (T g 557°C) The process opens further ... bonding structure and quality of the films are controlled by pressure via the MEG process, suggesting that the MEG process could improve the synthesis of the UNCD films at LPLT without substrate ... growth from low-pressure MEG process with addition of H2 [10] The transmittance spectrum of the UNCD film with a thickness around 250 nm grown from the LPLT MEG process on the glass substrate...

Ngày tải lên: 20/06/2014, 20:20

... encapsulating with 30 nm of epitaxial silicon, the sample was removed from UHV to be processed into Hall bar structures This process is known to result in 2D carrier densities of ≈ × 10 14 cm -2 [19] with ... silicide contacted Hall bar We see comparable behaviour, indicating that the nickel silicidation process does not exacerbate the hysteresis References Card HC: Aluminum-Silicon Schottky barriers ... Lavoie C, d’Heurle FM, Detavernier C, Cabral C Jr: Towards implementation of a nickel silicide process for CMOS technologies Microelectronic Engineering 2003, 70:144 14 Zwanenburg F, van Rijmenam...

Ngày tải lên: 20/06/2014, 22:20

... De Smedt F, De Gendt S, Heyns MM, Vinckier C: The application of ozone in semiconductor cleaning processes: the solubility issue J Electrochem Soc 2001, 148:G487-G493 Einaga H, Futamura S: Catalytic...

Ngày tải lên: 20/06/2014, 23:20

... (BET; Belsorp-mini, BEL Japan Inc., Osaka, Japan) method with a nitrogen adsorption/ desorption process The electrochemical performance of each powder was evaluated by assembling Swagelok-type ... each intermediate phase is schematically illustrated in Figure 2g As a detailed transformation process from Cu(OH)2 to CuO suggested by Cudennec et al [22], the possible formation mechanism of ... given via combined effects of the oriented attachment and subsequent dissolution-precipitation processes The galvanostatic cycling characteristics of CuO-interlaced nanodiscs in the configuration...

Ngày tải lên: 21/06/2014, 03:20

... http://www.nanoscalereslett.com/content/6/1/341 larger than for the as-deposited case (s L = 9.1 ± 0.1 nm), but the separation L is also larger Growth of QDs during the annealing treatment causes the destruction ... shown the possibility to grow the self-assembled nanoclusters at low temperature (250°C) Low-cost process will be explored further to obtain well-separated crystalline NCs Conclusions In this study, ... Nanotechnology 2009, 20:085612 Mogaddam NAP, Alagoz AS, Yerci S, Turan R, Foss S, Finstad TG: Phase separation in SiGe nanocrystals embedded in SiO2 matrix during high temperature annealing J Appl...

Ngày tải lên: 21/06/2014, 04:20