1adsorption of sulphur compounds over solid adsorbents

... base, and generating a list of tentatively identified compounds with their retention times and scan numbers The software must also allow integration of the ion abundance of any specific ion between ... leach organic compounds into the eluting solvent One liter of water should pass through the cartridge in about two hours with the assistance of a slight vacuum of about 13 cm (5 in.) of mercury ... acetone at a concentration of 500 µg/mL of each This solution is used in the preparation of the calibration solutions Dilute a portion of this solution by 10 to a concentration of 50 µg/mL and use this...

Ngày tải lên: 22/03/2014, 14:20

... observed shift of wavelength and the corresponding change of EOT signal are attributed to a change of the porous refractive index of nanoporous AAO layer as a result of the adsorption of H2S molecules ... concentration of total sulphur compounds in the malodour of healthy individuals is between 0.2 to 0.4 µg/L [24] Detection of VSCs within these limits by the Au-AAO sensor confirms the high sensitivity of ... the use of nanoporous anodic aluminium oxide [AAO] for reflective interferometric sensing of volatile sulphur compounds and hydrogen sulphide [H2S] gas Detection is based on changes of the interference...

Ngày tải lên: 18/06/2014, 22:20

... observed shift of wavelength and the corresponding change of EOT signal are attributed to a change of the porous refractive index of nanoporous AAO layer as a result of the adsorption of H2S molecules ... concentration of total sulphur compounds in the malodour of healthy individuals is between 0.2 to 0.4 µg/L [24] Detection of VSCs within these limits by the Au-AAO sensor confirms the high sensitivity of ... the use of nanoporous anodic aluminium oxide [AAO] for reflective interferometric sensing of volatile sulphur compounds and hydrogen sulphide [H2S] gas Detection is based on changes of the interference...

Ngày tải lên: 20/06/2014, 04:20

... observed shift of wavelength and the corresponding change of EOT signal are attributed to a change of the porous refractive index of nanoporous AAO layer as a result of the adsorption of H2S molecules ... concentration of total sulphur compounds in the malodour of healthy individuals is between 0.2 to 0.4 µg/L [24] Detection of VSCs within these limits by the Au-AAO sensor confirms the high sensitivity of ... http://www.nanoscalereslett.com/content/6/1/634 Page of Figure Schematic of the RIfS device for gas sensing Scheme of detection of VSCs using nanoporous Au-AAO reusable halves and sealed during use by fixing in a bondless microfluidic...

Ngày tải lên: 20/06/2014, 23:20

... consider a solid acid as a proton donor or an election pair acceptor The amount of acid on a solid is expressed as number or mmol of acid sites per unit weight or per unit surface area of the solid ... one of the most extensive areas for the application of heterogeneous catalysis Hundreds of solid acids have been developed to date The range of materials available includes the acidic H-forms of ... Determination of the strength of the acidic sites exposed on the solid surface as well as their distribution is a necessary requirement to understand the catalytic properties 16 of solid acids A variety of...

Ngày tải lên: 08/11/2015, 17:15

... release of harmful emissions to the environment, but also improves the overall efficiency of the SOFC system Yen et al [10] investigated the performance of an afterburner integrated with a kW SOFC ... any SOFC system, the performance of the INER SOFC system is dependent not only on the design and operating conditions of the fuel cell stack, but also on the design and operating conditions of ... Ef of an SOFC stack is defined as Ef=Power-Output/Input-Energy-(LHV), (1) where LHV is the lower heating value of the fuel In the SOFC system at INER, the stack has a potential output power of...

Ngày tải lên: 05/09/2013, 16:10

... PRESENTATION are of six types The selection of compounds for DFC is broad Included Structural headings (WA) classify naturally occurring are all compounds or group of compounds of interest or food ... indication of crystal form and of recrystallisation solvent is often given but these are imprecise items of data; most compounds can be crystallised from several solvent systems and the crystal form often ... specialist knowledge of an experienced international Editorial Board with overall responsibility for content, and a team of contributors with knowledge of particular areas of food components The...

Ngày tải lên: 16/09/2013, 21:58

... heterogeneous mixture of compounds The small fraction of strongly adsorbable compounds is often overlooked when determining an isotherm because of the analytical difficulty of obtaining good data ... ADSORPTION OF ORGANIC COMPOUNDS 13.17 FIGURE 13.12 Effect of biodegradation and the presence of nonadsorbable compounds on the shapes of breakthrough curves steam and CO2 at temperatures of 800 to ... mg aqueous O2 per gram of carbon over a time span of 1700 h, and Chudyk and Snoeyink (1981) found that to mg O2 per gram of carbon reacted over a time span of 130 h Some of this oxygen is converted...

Ngày tải lên: 14/02/2014, 03:20

... chemical and physical properties of another class of compounds A Halogen Derivatives of Hydrocarbons Functional Group: - X (F, Cl, Br, I) General Formula: R-X Naming of Halides Halogens attached ... the parent chain Name the compound in order of: number of carbon atom-alkyl group attached(number of carbon atom-alkyl group attached- etc ) name of parent compound If there are several different ... alkanes are straight chained compounds, as shown in the previous table, they can have side chains or branches These variations of compounds which have the same number of carbon and hydrogen atoms,...

Ngày tải lên: 14/02/2014, 08:20

... the condition of (semi)stability (as that of the adjoint sheaf of orthogonal algebras) in order to make the group G a parameter of the theory (such variations of the conditions of stability and ... that E1 is a solvable ideal of E, i.e the fibers of E1 are solvable ideals of the fibers of E (at closed points where both sheaves are locally free) ∨∨ [Se2, proof of Th 2.1 in Chap VI] Since E1 ... PR2 , ER2 , ψR2 ) Proof For a scheme S → R1 , the set of isomorphism classes of S-families of ρ2 -reductions is bijective to the set (2.2) MorUS (US , PS (F )) of sections of the principal F -bundle...

Ngày tải lên: 16/02/2014, 05:20

... space of eigenforms Ω1 ED (1, 1) has finite volume Proof The proof follows the same lines as the proof of finiteness of the volume of Ω1 M2 (1, 1), using the fact that ∂Ω1 ED (1, 1) lies over a ... ) ∈ N The orbit of a pair of forms of genus one under the action of NI is isomorphic to the orbit of a point x ∈ (G × G)/(Γ × Γ) under the action of N∆ By the classification of unipotent orbits ... conjugate of Γ × Γ in a lattice Proof In terms of the standard action of G × G on the product of two hyperbolic planes, S ⊂ AN × AN stabilizes a point (p, q) ∈ ∂H2 × ∂H2 But the stabilizer of p in...

Ngày tải lên: 16/02/2014, 06:20

Ngày tải lên: 19/02/2014, 15:20

... invariant of Artinian Modules over 39 The proof is then complete The above theorem means that the least degree of all polynomials bounding from above I(x(n); A) is a numerical invariant of A From ... multiplicity system of R K is called a system of parameter (s.o.p for short) for K if t = d Let x = (x1 , , xd ) is a multiplicity system of K The multiplicity e(x; K) of K with respect to ... is complete A new numerical invariant of Artinian Modules over 37 3.4 Lemma Let x be a s.o.p of A Then, there exists k ∈ N such that mk ⊆ xA + AnnR A Proof: Taking l ∈ N such that ml R ⊆ AnnR...

Ngày tải lên: 05/03/2014, 14:20

... naturally equivalent We give a proof of this proposition in appendix 14; the proof makes use of results of Section Let us write Aut(O) for the group of automorphisms of the formal disc Spec(O) The ... proof of this theorem we discuss it briefly from the point of view of representation theory We can view the theorem as giving us a ˇ geometric interpretation of representation theory of G First of ... for fields (of positive characteristic) We not know how to argue the case of fields of positive characteristic directly One of the key technical points of this paper is the construction of certain...

Ngày tải lên: 06/03/2014, 08:21

... Activation of the acetyl phosphate synthesis activity of E coli Pta by different concentrations of pyruvate and PEP Results are presented as percentage of activity in the presence of PEP or pyruvate ... catalytic activity of the enzyme In this way, in order to elucidate the functionality of the N-terminal end of E coli Pta, three different truncated Ptas that span the C-terminal domain of this protein ... deletions Moreover, in the case of Pta-F3, the sigmoidal response when the CoA concentration was varied was maintained, with a Hill coefficient of 1.6 (Table 1) However, in the case of Pta-F2 and...

Ngày tải lên: 06/03/2014, 11:20

... instructions Expression of mutant proCPUs in insect cells Determination of the half-life (T1/2) of CPU’s activity The T1 ⁄ of the activity of the best mutants secreted in the supernatant of the cells in ... for a prolongation of clot lysis time proportional to the increase in T1 ⁄ of activity of the mutant The YQ mutant was also used to demonstrate the importance of CPU stability over proCPU concentration ... addition of mutations (Table 3) resulted in more than half of the cases in a decrease of T1 ⁄ A further round of FINDTM treatment did not improve T1 ⁄ further compared with a combination of mutations...

Ngày tải lên: 07/03/2014, 12:20

... Fellow of the IEEE, the Optical Society of America, and the Americal Physical Society, and is a member of the US National Academy of Engineering He was the winner of the Charles H Townes Award of ... the time-dependence of the state of the system The mathematical solution of the equation of motion for the dynamic variables of the system will then tell us precisely the state of the system at ... development of quantum theory, which is a totally new way of dealing with the problems of mechanics and electrodynamics in the atomic and subatomic world A brief overview of the general approach of the...

Ngày tải lên: 17/03/2014, 14:41

... • one of three ways of combining the values of features collected for individual candidate concepts into values of features for pairs of candidate concepts: the raw ratio of the values of the ... which of the two is more relevant To create training and testing examples, the values of the features of the first concept in the pair are respectively combined with the values of the features of ... 1948) of the proportion of matched descendant instances of the concept; • AVG D EPTH ranks candidate concepts by their distances to half of the maximum hierarchy height, emphasizing a balance of...

Ngày tải lên: 17/03/2014, 22:20

... precision of retrieval of pK depends on the degree of a priori knowledge of the other parameters of p hal-00657609, version - Jan 2012 1.2 The two models In order to carry out an inversion of a set of ... of the RM is chosen to be the same as the MNI of the SM In this case, when the values of all the parameters of the set P are strictly equal to their counterparts in the set p and the values of ... priori of the value of at least one of the parameters of the set p This is the reason why, in the present study, we take explicitly in account this imprecision, with the added benefit of avoiding...

Ngày tải lên: 18/03/2014, 01:21

... properties to Program Offices (e.g., Office of Water, Office of Solid Waste and Emergency Response, Office of Prevention, Pesticides and Toxic Substances) and Regional Offices Also, SPARC has been used ... some 3685 compounds, including multiple pKa's up to the sixth pKa spanning a range of over 30 pKa units as shown in Figure The overall RMS deviation error for this large test set of compounds ... interactions of the P with the two states δrespKa describes the change in the delocalization of π electrons of the two states due to P This delocalization of π electrons is assumed to be into or out of...

Ngày tải lên: 22/03/2014, 14:20