diffusion and reaction in porous catalysts

Measuring diffusion and quenching in microchannels

Ngày tải lên : 01/10/2015, 17:28

... Conclusions and future outlook Main findings Determining diffusion length limit to avoid wall hindrance Determining diffusion of protein-dye conjugations Investigating anomalous diffusion in microchannels ... 1.1), including two semiconductor interfaces, or a metalsemiconductor interface In the case of interdiffusion along the semiinfinite axis of the microchannel width, the infinite source of diffusing ... simulations, and enlightening insights and advice Tan Huei Ming, Engineering Science Programme in the Physics Department, for helping with various equipment contacts and purchases, teaching of the...

145
508
0

Tài liệu Báo cáo khoa học: A point mutation in the ATP synthase of Rhodobacter capsulatus results in differential contributions of DpH and Du in driving the ATP synthesis reaction pptx

Ngày tải lên : 21/02/2014, 03:20

... illuminated by two opposite panels each carrying nine 100-W incandescent light bulbs; excessive warming was prevented by water cooling The mutant and wild-type strain were grown in parallel and ... described in [36] by rapidly injecting an acidiﬁed chromatophores suspension into a luminometer cuvette containing a basic solution and monitoring the ATP concentration continuously with luciferine/luciferase ... internal and external pH’s were 4.96 and 8.54, respectively, and the [K+]out and [K+ ]in were 150 mM and mM, respectively, thus inducing a K+/valinomycin diﬀusion potential (+Du) Bchl concentration in...

9
580
0

Báo cáo khoa học "ADIABATIC TEMPERATURE RISE AND REACTION RATE OF MASS STRUCTURE IN LOTTE CENTER HANOI PROJECT " pptx

Ngày tải lên : 07/03/2014, 03:20

... concrete placement and then the values were corrected and re-analyzed The final results are shown in figure 4.Throughout this procedure in the case of using fly-ash in designing binder quantity it ... and the peak point of hydration heat for the total amount of binder would be increased as increasing the quantity of cement Therefore, the amount of cement was designed as the minimum value and ... demonstrated in 3.3 and shown in Figure Figure Shape and curing plan of mat foundation 4.3 Thermal stress and TCI of mat foundation Hydration heat generated from internal member was measured in real...

7
492
3

Báo cáo khoa học: Role of DptE and DptF in the lipidation reaction of daptomycin ppt

Ngày tải lên : 07/03/2014, 04:20

... motif present in DptF is GLDSV, indicating that this putative ACP domain is one of the few ACPs in which valine replaces isoleucine (I) or leucine (L) in the conserved sequence To determine whether ... phosphopantetheinylation of apo-DptF and apoAcpK Coomassie blue-stained SDS–PAGE gel (left) and in- gel ﬂuorescence (right) of the ﬂuoresceinyl-ACP (+) indicates the reaction with Sfp; ()) indicates the reaction ... obtained with DptF and LipD, we performed kinetic studies To determine kinetic data for LipD, this protein was expressed in vivo in its active holo form (see Experimental procedures) The reaction...

12
674
0

Diffusion and Use of Genomic Innovations in Health and Medicine: Workshop Summary pot

Ngày tải lên : 14/03/2014, 23:20

... Diffusion and Use of Genomic Innovations in Health and Medicine: Workshop Summary http://www.nap.edu/catalog/12148.html Diffusion and Use of Genomic Innovations in Health and Medicine workshop ... Health Diffusion and Use of Genomic Innovations in Health and Medicine: Workshop Summary http://www.nap.edu/catalog/12148.html Diffusion and Use of Genomic Innovations in Health and Medicine: ... reserved Diffusion and Use of Genomic Innovations in Health and Medicine: Workshop Summary http://www.nap.edu/catalog/12148.html PLANNING COMMITTEE ON DIFFUSION AND USE OF GENOMIC INNOVATIONS IN HEALTH...

117
333
0

Geochemistry of inorganic arsenic and selenium in a tropical soil effect of reaction time, ph, and comp

Ngày tải lên : 16/03/2014, 00:25

... main inorganic forms of As in contaminated soils and sediments are +5 and +3 (Harper and Haswell, 1988) but sometimes the oxidation states of )3 and are expected to be found in highly reducing ... AsO3 and H2 AsOÀ ) normally predominate in slightly reduced soils whereas As(V) (as H2 AsOÀ and HAsO2À ) occur predominantly in well4 oxidized soils Selenium can also be present in inorganic and ... states in aqueous and subsurface systems, namely )2, 0, +4, and +6 The fate and transport of Se in contaminated sites are very much in uenced by its chemical form and speciation Selenite and Se(VI)...

11
832
0

Heat and Mass Transfer in Porous Media pdf

Ngày tải lên : 31/03/2014, 16:20

... dampening of the RH variation in a room and its hygroscopicity level, which is mainly dependant on the surface ﬁnishing materials and furnishing According to the principle, a hygroscopic inertia index ... treating rising damp in historic buildings based upon a hygro-regulated wall base ventilation system, and analyses the results obtained following implementation of the system in churches in Portugal ... treating rising damp in historic buildings based upon a hygro-regulated wall base ventilation system, and analyses the results obtained following implementation of the system in churches in Portugal...

270
1.9K
3

Báo cáo hóa học: " Research Article Exponential Stability for Impulsive BAM Neural Networks with Time-Varying Delays and Reaction-Diffusion Terms" doc

Ngày tải lên : 22/06/2014, 19:20

... ensuring the existence, uniqueness, and global exponential stability of equilibrium point for impulsive BAM neural networks with time-varying delays and reactiondiﬀusion terms, without assuming ... jth neurons from FV and the ith neurons from FU at time t and in space x, respectively; αi and β j are constants, and denote the external inputs on the ith neurons from FU and the jth neurons ... and the jth neurons from FV will reset their potentials to the resting state in isolation when disconnected from the networks and external inputs, respectively; ci j and d ji are constants, and...

18
304
0

Báo cáo y học: "Expression analysis of three isoforms of hyaluronan synthase and hyaluronidase in the synovium of knees in osteoarthritis and rheumatoid arthritis by quantitative real-time reverse transcriptase polymerase chain reaction" potx

Ngày tải lên : 09/08/2014, 01:24

... hyaluronidase-2 in the synovium of OA and RA was approximately four times that in the control synovium This finding suggests that in OA and RA, the protein expression of hyaluronidase-2 in the synovium is increased ... grade joint space narrowing combined with osteophytes, or of grade or joint space narrowing Control synovial samples were obtained from donors who had no intra-articular pathologic findings under ... -2, and -3 in the synovium synthase-1, 2, and -3 and (OA) levels of the messages (RA) Relative expressionand rheumatoid arthritis for hyaluronanof knees in 2, and -3 and hyaluronidase-1, -2, and...

7
466
0

báo cáo khoa học: "Eosinophilic and neutrophilic leukemoid reaction in a woman with spindle cell sarcoma: a case report" doc

Ngày tải lên : 11/08/2014, 02:21

... There are several cytokines and growth factors that can be involved in the production of eosinophils, with the main cytokines being IL-3 and IL-5, and the main growth factor being GM-CSF [15] These ... 6:893-902 Stefanini M, Claustro JC, Motos RA, Bendigo LL: Blood and bone marrow eosinophilia in malignant tumors: role and nature of blood and tissue eosinophil colony-stimulating factors in two patients ... Immunohistochemical detection of eosinophilic infiltration in pulmonary adenocarcinoma Anticancer Res 2002, 22:2391-6 15 Sanderson CJ: Interleukin-5, eosinophils, and disease J Amer Soc Hemat 1992,...

4
224
0

Báo cáo y học: " Membrane diffusion- and capillary blood volume measurements are not useful as screening tools for pulmonary arterial hypertension in systemic sclerosis: a case control study" pptx

Ngày tải lên : 12/08/2014, 14:20

... diffusion and chemical reaction rates in determining rate of exchange of gases in the human lung, with special reference to true diffusing capacity of pulmonary membrane and volume of blood in ... level (Vc) However, Dm and Vc may not act as independent entities Decrease in capillary flow, affecting Vc, result in reduction in surface area in affected tissue and therefore in a decrease of Dm[25] ... obliteration as occurs in PAH results in a decrease in capillary flow and thus a decrease in Vc This will result in a reduction in surface area available for gas exchange, and therefore in a decrease...

8
264
0

A numerical study of heat and mass transfer in porous fluid coupled domains

Ngày tải lên : 12/09/2015, 21:13

... electronic cooling, ceramic processing, and overland flow during rainfall In thermal insulation engineering, an appreciable insulating effect is derived by placing porous material in the gap between ... number in x and y directions in inlet int interface line in reactor interface interface value l east, west, north, and south point of control volume n north w west p control volume center point; porous ... phenomena in porous media have been attempted since Darcy in the 19th century Considering the wide applications for porous media, numerical research on heat and mass transfer in porous media, and in porous/ fluid...

286
532
0

Adsorption and diffusion of gases in cu BTC

Ngày tải lên : 15/09/2015, 21:13

... H High L Low I Intermediate xxiv CHAPTER INTRODUCTION Adsorption separation processes are in widespread industrial use, particularly in the petroleum refining and petrochemical industries The ... Senkovska and Kaskal, 2008) These recipes have differences in the proportion of reagents, mixing of the organic and inorganic solutions before the reaction, duration and temperature of the reaction, and ... is also shown in Figure 2.3 The only nets with one kind of vertex are known as eta and etb The eta and etb nets contain helices of one hand and both hands, respectively Roswell and Yaghi (2006)...

208
351
0

Fabrication of tungsten oxide nanostructured films using anodic porous alumina and application in gas sensing

Ngày tải lên : 06/10/2015, 20:43

... self-ordering technique for creating nano-channels in alumina, is a simple and cheap method for creating highly ordered nanoporous film The dimensions of the nanochannels, including pore diameter and ... conditions In this thesis, we examined the suitability of using porous alumina as a supporting substrate for creating a textured metal oxide semiconducting (MOX) nanofilm to be used as a gas sensor in ... their assistance in obtaining the resources required for experiments; Jayson Koh for providing sound advice and technical support, and for making his stay in CICFAR II a comfortable and enjoyable...

118
364
0

Clays and oxide minerals as catalysts and nanocatalysts in Fentonlike reactions

Ngày tải lên : 08/10/2015, 22:52

... advantage of using PILCs catalysts In investigating the wet acid oxidation by H2O2 of p-coumaric acid and p-hydroxybenzoic acid using Cu-PILC with different Cu loadings (0.5, 1.0 and 2.0% Cu), ... according to reactions 2.6 and 2.7 These free radicals can also react with H2O2 (reactions 2.8 and 2.9) Finally, the radicals can react with themselves, terminating the reactions (2.10 and 2.11) ... counterparts (Kwan and Voelker, 2003) In evaluating the activity of different iron minerals in catalyzing the degradation of 2,4,6-trinitrotoluene (TNT) through a Fenton-like reaction in aqueous solution...

11
1.2K
0

High-Surface-Area Catalyst Design- Synthesis, Characterization, and Reaction Studies of Platinum Nanoparticles in Mesoporous SBA-15 Silica

Ngày tải lên : 08/10/2015, 23:16

... methods according to the literature.9,10 Methanol, ethanol, and ethylene glycol served as solvents for dissolving Pt salts and PVP, and as a reducing agent of Pt according to the following reaction: ... The olefin generally has an inhibiting effect on the overall reaction rate in olefin hydrogenation reactions.31 The olefin displaces hydrogen from the metal surface, negatively impacting the ... examined Reaction orders in ethane and hydrogen were collected for Pt (X)/SBA-15 catalysts at 643 K with particle sizes (X) ranging from 1.7 to 7.1 nm Results and Discussion 3.1 Synthesis and...

11
471
0

Questions to .NET and Programming in C#

Ngày tải lên : 21/08/2012, 15:55

... c) Pointers and values a) Value types and reference types in simple terms is nothing but conversion of a value type into a reference type a) Casting c) Unboxing d) Overriding b) Boxing ... for statement’s syntax is incorrect using System; class Test { static void Main() { int @Main; int[] Static= new int[3]; @Main =100*Static[1]; Console.WriteLine(@Main); } } What will be the output ... A.F Init B B.F b) Init A Init B A.F B.F c) d) A.F Init B Init A A.F A.F B.F Init B Init A 89 //.Inconsistent accessibility: base class 'Test' is less //accessible than class 'Q3' lỗi dòng using...

18
1.3K
8

Questions to .NET and Programming in C#

Ngày tải lên : 29/08/2012, 16:37

... of the following is the correct syntax for declaring an indexer a) protected int this[int var1] c) public int this(int var1) b) public int classname[int index] d public int this[int ) var1] A ... Main() { IndexerTest IndexMe = new IndexerTest(); IndexMe[1] = 100; IndexMe[2] = 1000; System.Console.WriteLine(IndexMe[1]); System.Console.WriteLine(IndexMe[2]); System.Console.WriteLine(IndexMe[3]); ... public string this[int pos] { get { return myData[pos]; } set { myData[pos] = value; } } static void Main(string[] args) { IntIndexer myInd = new IntIndexer(5); myInd[1] = "Some Value"; myInd[4]...

36
1.3K
5

The Duality of Memory and Communication in the Implementation of a Multiprocessor Operating System

Ngày tải lên : 12/09/2012, 15:05

... workstations and mainframes within the Department of Computer Science, and supports projects in distributed computing and parallel processing such as the Camelot distributed transaction processing system ... be described in more detail in a later section When shadowing, the data is instead copied from the original 9 char *file_data; int i, file_size; extern float rand(); /* random in [0,1) */ /* ... a memory object and offset within that memory object Additional information stored for each range includes protection and inheritance information To account for sharing through inheritance, Mach...

23
1.3K
1

Virtual Memory, Processes, and Sharing in MULTICS

Ngày tải lên : 12/09/2012, 15:05

... procedure's linkage section is made as a segment within that process In certain cases the linkage sections of several procedures are combined into a single linkage segment private to the process Linking ... the link pointer and have the form shown in Figure 12 The displacement k is determined by the coding of P and is invariant with respect to the process using P Procedure Call and Return The coding ... entry point in the called procedure segment Thus in establishing the link for an external procedure call, the generalized indirect address placed in the calling procedure's link data points to...

7
631
2