The characterization of the coke deposited on an industrial Pt–Sn/γ‐Al 2 O 3 catalyst, used in a continuous reforming process, was performed with AFM, XRD, FTIR, EPR, NMR, TG‐DTG and DTA techniques. Composition, structure and location of the coke on the catalyst were investigated. The coke was predominantly deposited on the catalyst surface and in the interstices between the catalyst particles. Its content nike cortez increased along the reactor from top to bottom. Coke was deposited in the form of uniform films and clusters of three‐dimensional disks with diameters between 0.12 and 0.18 μm.

It had a pseudo‐graphite structure produced by the dehydrogenation and polymerization of the aromatic precursor compounds.nikeheaven The coked catalyst showed a good combustion behavior; it was regenerated below 550°C…. These results are important to elucidate the coke formation mechanism, to generate new continuous reforming catalysts, and to optimize the reactor operation parameters.


Direct current (DC) glow nike boots discharge plasma nitriding was carried out on three selected surface-roughened AISI 304 stainless steel samples at 833 K under 4 mbar pressures for 24 h in the presence of N2:H2 gas mixtures of 50 : 50 ratios. After plasma nitriding, the phase formation, case depth, surface roughness, and microhardness of a plasma-nitrided layer were evaluated by glancing angle x-ray diffractogram, optical microscope, stylus profilometer, and Vickers microhardness tester techniques. The case depth, surface hardness, and phase formation variations were observed with a variation in initial surface roughness.


Amiodarone blocked HERG channels with an IC50 of 9.8 µM with a maximum outward tail current reduction of 62.8%. The block consisted of two main components, a closed channel block that could not be reversed within the time of experiments and an open channel block with a slow unblock, having a recovery time… constant of 73 s at –80 mV. Inactivation of the HERG channel at very positive potentials could not prevent amiodarone block. These results indicate that HERG channels can be blocked by amiodarone in closed, open and inactivated states. The block of open channels was cumulative, use-dependent and voltage-dependent. In summary, nike custom our data suggest that the strong class III antiarrhythmic action of amiodarone is at least partially based upon its acute inhibitory effects on HERG potassium channels.

Abstract Background We sought to identify factors that affect the passage of public nike metcon 4 health legislation by examining the use of arguments, particularly arguments presenting research evidence, in legislative debates regarding workplace smoking restrictions. Methods We conducted a case-study based content analysis of legislative materials used in the development of six state workplace smoking laws, including written and spoken testimony and the text of proposed and passed bills and amendments. We coded testimony given before legislators for arguments used, and identified the institutional affiliations of presenters and their position on the legislation.

We compared patterns in the arguments made in testimony to the relative strength of each state’s final legislation. Results Greater… discussion of scientific evidence within testimony given was associated with the passage of workplace smoking legislation that provided greater protection for public health, regardless of whether supporters outnumbered opponents or vice versa.cheapnikeaustralia Conclusion Our findings suggest that an emphasis on scientific discourse, relative to other arguments made in legislative testimony, might help produce political outcomes that favor public health.


On the nanometre nike store scale, the actual indenter-material contact area must be carefully determined to obtain reliable values of mechanical properties from an indentation test. On this scale, the contact area is greatly affected by the geometrical tip defect and by the possible formation of plastic pile-up (or sink-in) around nike bottle the indent. Parameters such as local surface roughness and heterogeneity in surface and in thickness make it di5dt to conduct and to interpret nanoindentation tests.

A new method, which couples nanoindentation experiments and imaging procedures, has been developed. Nanoindentation tests and topographic images are performed with a surface force apparatus developed in our laboratory. The important point of our method is the ability of our three-axis device to generate… topographic images without having to move the sample. This allows us to determine precisely the actual tip-sample contact area, while performing accurate continuous quantitative quasistatic load measurement and simultaneous dynamic measurement of the contact stiffness against penetration depth.In this paper, the method is described. Results obtained on a gold layer are presented as an illustration of the method. They show how we solve some problems and try to push forward the limits of indentation tests.

The human ether-a-go-go-related gene (HERG) encodes a K+ channel with biophysical properties nearly identical to the rapid component of the cardiac-delayed rectifier K+ current (I Kr). HERG channels are one primary target for the pharmacological management of arrhythmias.nikeflyknitraceraustralia In this study, we investigated the acute effects of the class III antiarrhythmic drug amiodarone on HERG channels expressed heterologously in Xenopus oocytes by use of the two-microelectrode voltage clamp technique.


Abstract:Data cube has been playing an essential role in OLAP (online analytical processing). The pre-computation of data cubes is critical for improving the response time of OLAP systems. However, as the size of data cube grows, the time it takes to perform this pre-computation becomes a significant performance bottleneck. In a high dimensional OLAP, it might not be practical to build all these cuboids and their indices. In this paper, we propose a parallel hierarchical cubing algorithm, based on an extension of the previous minimal cubing approach. The algorithm has two components: decomposition of the cube space based on multiple dimension attributes, and an efficient OLAP query engine based on a prefix bitmap encoding of the indices.

This method partitions the high… dimensional data cube into low dimensional cube segments. Such an approach permits a significant reduction of CPU and I/O overhead for many queries by restricting the number of cube segments to be processed for both the fact table and bitmap indices. The proposed data allocation and processing model support parallel I/O and parallel processing, as well as load balancing for disks and processors. Experimental results show that the proposed parallel hierarchical cubing method is significantly more efficient than other existing nike basketball cubing methods.

The adsorption of HNO 3 molecules induces a two-step reduction in the edge-state spin concentration due to the charge transfer from nanographene to HNO 3 molecules; charge transfer with the exterior nanographene sheets of the nanographite domain in the first step, and… subsequent intercalation into the interior nanographene sheets in the second step. Besides the charge transfer reaction, it is found that the paramagnetic NO molecules are produced owing to the decomposition of HNO 3 and they are dimerized nike custom to form nonmagnetic (NO) 2 at low temperatures.nikestefanjanoskimaxaustralia This finding suggests that the chemically active nanographene having edge states plays an important role in enhancing charge transfer and the concomitant decomposition of the guest HNO 3 molecules.


Please cite this paper as: Shand A, Nassar N, Von Dadelszen P, Innis S, Green T. Maternal vitamin D status in pregnancy and adverse pregnancy outcomes in a group at high risk for pre‐eclampsia. BJOG 2010;117:1593–1598.Objective  To determine in a group of pregnant women if vitamin D status, based on serum 25‐hydroxyvitamin D (25OHD) concentration, was associated with a subsequent risk of pre‐eclampsia or adverse pregnancy outcomes.Design  Prospective cohort study.Setting  Vancouver,nikefree5australia British Columbia, Canada (49°N).

Population  Women attending a specialist antenatal clinic because of clinical or biochemical risk factors for pre‐eclampsia (n = 221).Methods  Serum 25OHD concentration measured between 10 and 20 weeks of gestation.Main outcome measures  Pre‐eclampsia and composite adverse… pregnancy outcomes.Results  Of the women, 78% were vitamin nike backpack D insufficient (25OHD.

Nonbonding π -electron states (edge-state) localized at the graphene edges are the origin of electronic/chemical activities of nanographene, and the localized spin of this edge state gives unconventional magnetic features to nanographene. The magnetic properties of nanoporous carbon consisting of a 3D disordered network of nanographite domains (each consists of a stack of 3–4 nanographene sheets) are investigated in relation to the host-guest interaction nike cap with nitric acid molecules possessing significant oxidizing power.


The emergence of volumetric CT scanners, higher field MR scanners in clinical practice and higher resolution MR sequences has made a tremendous contribution to the development of cranial nerve imaging. The use of surface coils and parallel imaging allows sub-millimetric visualization of nerve branches and… volumetric 3D imaging. Both with CT and MR, multiplanar and curved reconstructions can follow the entire course of a cranial nerve or branch, improving tremendously our diagnostic yield of neural pathology. This review article will focus on the contribution of current imaging techniques in the depiction of normal anatomy and on infectious and inflammatory, traumatic and congenital pathology affecting the cranial nerves. A detailed discussion of individual cranial nerves lesions is beyond the scope of this article.

AbstractInternet is composed of a set of autonomous systems (AS) managed by an administrative authority. The Border Gateway Protocol (BGP) is the exterior routing protocol used to exchange network reachability between the border routers of each autonomous network. BGP allows the ASes to apply policies when they select the routes that their traffic will take. Policies are based on business relationships and traffic engineering constraints.nikefreeflyknitaustralia It is currently assumed that the exchanged reachability information is correct. In other words, the ASes that originate a network prefix are supposed to be authorized to advertise it.

It also means that the announced routing information is conformant with the routing policies of the ASes. This assumption is not true anymore. We review existing proposals… aiming to solve internet routing security issues and present our contributions. First, we nike boots propose a system able to detect and to react to illegitimate nike drink bottle advertisements. Then, we describe our current work that focuses on the specification of a collaborative framework between ASes aiming at cautiously select routes.Keywords: Routing, BGP, security.


Abstract:Intrusion Detection Systems (IDSs) have the reputation of generating many false positives. Recent approaches, known as stateful IDSs, take the state of communication sessions into account to address this issue. A substantial reduction of false positives, however, requires some correlation between the state of the session,nikerosherunaustralia known vulnerabilities, and the gathering of more network context information by the IDS than what is currently done (e.g., configuration of a node, its operating system, running applications).

In this paper we present an IDS approach that attempts to decrease the number of false positives by collecting more network context and combining this information with known vulnerabilities. The approach is model-driven as it relies on the modeling of packet… and network information as UML class diagrams, and the definition of intrusion detection rules as OCL expressions constraining these diagrams. The approach is evaluated using real attacks on real systems, nike air force 1 title=’nike air force 1 womens’>nike air force 1 womens and appears to be promising.

Many disease processes manifest either primarily or secondarily by cranial nerve deficits. Neurologists, ENT surgeons, ophthalmologists and maxillo-facial surgeons are often confronted with patients with symptoms and signs of cranial nerve dysfunction. Seeking the cause of this dysfunction is a common indication for imaging. In recent decades we have witnessed an unprecedented improvement in imaging techniques, allowing direct visualization of increasingly small anatomic structures.


Zooplankton encounter rates are dependent not only on both sensory and swimming performances nike slides of the organisms, but also on the distribution pattern of food particles. Increasing evidences indicate that, in natural conditions, phytoplankton is often aggregated in thin layers. In the present contribution we investigate the concomitant effects of motion complexity and habitat fragmentation on the number of encounters realised by virtual continuously moving copepods adopting different motion strategies. Our simulated organisms move in an environment characterised by the presence of thin patches of phytoplankton,nikerosheflyknitaustralia and their swim follows five motion rules (pure random walk, correlated random walk with three different time scales, self-avoiding random walk), each characterised by a typical value… of the three-dimensional fractal dimension D 3D .

Compared to a uniform distribution, for a given motion rule the clustering of prey particles increases nike mercurial superfly the variance of encounters, while no remarkable effect is reported in the average number of particles intercepted. These results broaden our understanding of the behavioural efficiency in freely swimming zooplankters and improve our knowledge of the functioning of aquatic systems.

Differential thermal analysis studies support the formation of a partial melt involving dissolution-precipitation of boundary layers of BaTiO 3 grains. These complex phase relations are accounted for in terms of the phase instability of BaTiO 3 with large cation-vacancy concentration as a result of heavy Nd 3+ substitution. The absence of structural intergrowth in (1 – x )BaTiO 3 + x Nd 2/3 TiO 3 under oxidative conditions leads to a separation of phases wherein the new phases undergo melting and remain X-ray amorphous. BNT ceramics with 0.1.


Although the pathophysiological basis of idiopathic focal dystonia (IFD) remains unclear, we recently reported abnormal perception of the tonic vibration reflex (TVR) in the biceps brachii in IFD. nikeairmaxtnsaustralia In this study we examined whether the abnormality affects muscles other than the biceps brachii. A 100‐Hz vibration stimulating predominantly the muscle spindle afferent was transcutaneously applied to one muscle tendon of the triceps brachii, the wrist extensor and flexor muscles in 29 subjects with IFD (18 with torticollis, 9 with writer’s cramp, 2 with blepharospasm) and 15 control subjects.

The blindfolded subjects were instructed to copy any perceived movement with the opposite tracking arm. The elbow or wrist angle changes were quantified electronically. The TVR and subjects’ perception of… the TVR were evaluated by angle movements of the vibrated joint and of the tracking joint, respectively. Perception of the TVR was significantly reduced in dystonic subjects at both elbow and wrist joints, while magnitude of the TVR did not differ between the nike magista two groups. Abnormal central perception of the TVR is a feature of IFD, suggesting a widespread involvement of abnormal muscle spindle afferent processing in IFD.

Investigations on the phase relations and dielectric properties of (1 – x )BaTiO 3 + x Nd 2/3 TiO 3 (BNT) ceramics sintered in air below 1650 K have been carried out. X-ray powder diffraction studies indicate apparent phase singularity for compositions with x 0.08 contain additional phases that are partly amorphous even to an electron beam. SEM observations reveal that BaTiO 3 nike casual shoes grains are mostly covered by a molten intergranular phase, and show the presence of randomly distributed Nd 2 Ti 2 O 7… grains. Energy dispersive X-ray analysis shows the Ba-Nd-Ti ternary composition of the intergranular phase.


Standard microeconomic theory has long recognized firm-level substitution and output effects in explaining aggregate responses to taxation of an input such as nitrogen fertilizer., in the presence of managerial heterogeneity, a nitrogen tax will also affect the composition of the industry, with profligate users of nitrogen shrinking in relative importance, and low-nitrogen users expanding. In this paper, we assert that a substantial share of the reduction in nitrogen normally attributed to firm-level substitution may in fact owe its nike careers origin to this type of industry-wide compositional effect.

We also demonstrate that, while such a tax will have only a minor effect on industry average net returns, its impact on individual corn producers will be quite significant in some cases, with… nitrogen-intensive producers losing while those farmers with low rates of commercial nitrogen usage stand to gain from the tax.This article examines the relation between readers’ implicit models of reading and nike m2k tekno motivation to read. We use the term implicit model to refer to a belief system that affects one’s goals and strategies for reading. We trace the origin and development of our thinking about implicit models. We describe transmission and transaction models, their relation to each other, and how each is related to motivation to read and a variety of reading behaviors, including thematic, critical and personal responses.

We also consider how implicit models are related to motivational variables such as self-efficacy, attributions,niketnsaustralia and goal orientations. We argue that transaction models increase motivation to read by legitimizing the meaning-construction process and by increasing the type and number of deeper… processing strategies such as inferencing, generating hypotheses, and the construction of a holistic interpretation of a text. We conclude with a number of suggestions for future research.