581 research outputs found
Web Service Discovery in a Semantically Extended UDDI Registry: the Case of FUSION
Service-oriented computing is being adopted at an unprecedented rate, making the effectiveness of automated service discovery an increasingly important challenge. UDDI has emerged as a de facto industry standard and fundamental building block within SOA infrastructures. Nevertheless, conventional UDDI registries lack means to provide unambiguous, semantically rich representations of Web service capabilities, and the logic inference power required for facilitating automated service discovery. To overcome this important limitation, a number of approaches have been proposed towards augmenting Web service discovery with semantics. This paper discusses the benefits of semantically extending Web service descriptions and UDDI registries, and presents an overview of the approach put forward in project FUSION, towards semantically-enhanced publication and discovery of services based on SAWSDL
Surface modification, strengthening effect and electrochemical comparative study of Zn-Al2O3-CeO3 and Zn-TiO2-CeO3 coating on mild steel
Surface enhancement of engineering materials is
necessary for preventing service failure and corrosion attacks
industrially. The surface modification, strengthening effect
and electrochemical comparative study of Zn-Al2O3-CeO3
and Zn-TiO2-CeO3 coating on mild steel was investigated.
Deposition was performed to obtain a better surface adherent
coating using the electrodeposition technique. Co-deposition
of mild steel resulted into surface modification attributes to
the complex alloys that were developed. Films of mild steel
were electrodeposited on zinc electrodes using the chloride
bath solutions. The effect of deposition potentials was systematically
studied using a focus ion beam scanning electron
microscope (FIB-SEM) and an atomic force microscope
(AFM) to observe the surface morphology, topography and
the surface adherent properties of the coatings. The elemental
composition and the phases evolved in composite coatings were measured by means of the energy dispersed
spectrometer (EDS). The microhardness measurements and
corrosion behaviours of the deposits were investigated.
Weight loss measurement was conducted on the plated samples
to observe the rate of corrosion and it was observed that
there was severe corrosion on the controlled sample in comparison
to the plated samples and that Zn-TiO2-CeO3
resisted more corrosion attacks
Use of uterine fundal pressure maneuver at vaginal delivery and risk of severe perineal laceration
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Effect of WO3 Nanoparticle Loading on the Microstructural, Mechanical and Corrosion Resistance of Zn Matrix/TiO2-WO3 Nanocomposite Coatings for Marine Application
In this study, for marine application purposes, we
evaluated the effect of process parameter and particle loading on
the microstructure, mechanical reinforcement and corrosion
resistance properties of a Zn-TiO2-WO3 nanocomposite produced
via electrodeposition. We characterized the morphological
properties of the composite coatings with a Scanning Electron
Microscope (SEM) equipped with an Energy Dispersive
Spectrometer (EDS). We carried out mechanical examination using
a Dura Scan hardness tester and a CERT UMT-2 multi-functional
tribological tester. We evaluated the corrosion properties by linear
polarization in 3.5% NaCl. The results show that the coatings
exhibited good stability and the quantitative particle loading greatly
enhanced the structural and morphological properties, hardness
behavior and corrosion resistance of the coatings. We observed the
precipitation of this alloy on steel is greatly influenced by the
composite characteristics
Corrosion Resistance of AA6063-Type Al-Mg-Si Alloy by Silicon Carbide in Sodium Chloride Solution for Marine Application
The present work focused on corrosion inhibition of
AA6063 type Al-Mg-Si alloy in sodium chloride (NaCl) solution
with a silicon carbide inhibitor, using the potentiodynamic
electrochemical method. The aluminium alloy surface morphology
was examined, in the as-received and as-corroded in the
un-inhibited state, with scanning electron microscopy equipped
with energy dispersive spectroscopy (SEM-EDS). The results
obtained via linear polarization indicated a high corrosion potential
for the unprotected as-received alloy. Equally, inhibition efficiency
as high as 98.82% at 10.0 g/v silicon carbide addition was obtained
with increased polarization resistance (Rp), while the current
density reduced significantly for inhibited samples compared to the
un-inhibited aluminium alloy. The adsorption mechanism of the
inhibitor aluminium alloy follows the Langmuir adsorption
isotherm. This shows that the corrosion rate of aluminium alloy
with silicon carbide in NaCl environment decreased significantly
with addition of the inhibito
MTOR and STAT3 pathway hyper-activation is associated with elevated interleukin-6 levels in patients with shwachman-diamond syndrome: Further evidence of lymphoid lineage impairment
Shwachman–Diamond syndrome (SDS) is a rare inherited bone marrow failure syndrome, resulting in neutropenia and a risk of myeloid neoplasia. A mutation in a ribosome maturation factor accounts for almost all of the cases. Lymphoid involvement in SDS has not been well characterized. We recently reported that lymphocyte subpopulations are reduced in SDS patients. We have also shown that the mTOR-STAT3 pathway is hyper-activated in SDS myeloid cell populations. Here we show that mTOR-STAT3 signaling is markedly upregulated in the lymphoid compartment of SDS patients. Furthermore, our data reveal elevated IL-6 levels in cellular supernatants obtained from lymphoblasts, bone marrow mononuclear and mesenchymal stromal cells, and plasma samples obtained from a cohort of 10 patients. Of note, everolimus-mediated inhibition of mTOR signaling is associated with basal state of phosphorylated STAT3. Finally, inhibition of mTOR-STAT3 pathway activation leads to normalization of IL-6 expression in SDS cells. Altogether, our data strengthen the hypothesis that SDS affects both lymphoid and myeloid blood compartment and suggest everolimus as a potential therapeutic agent to reduce excessive mTOR-STAT3 activation in SDS
Visitor expenditure estimation for grocery store location planning: a case study of Cornwall
Visitor expenditure is an important driver of demand in many local economies, supporting a range of services and facilities which may not be viable based solely on residential demand. In areas where self-catering accommodation is prevalent visitor demand makes up a considerable proportion of sales and revenue within grocery stores, yet this form of visitor consumption is commonly overlooked in supply and demand-side estimates of visitor spend. As such, store location planning in tourist resorts, decisions about local service provision and the local economic impacts of tourism are based on very limited demand-side estimates of visitor spend. Using Cornwall, South West England as a study area, we outline a methodology and data sources to estimate small-area visitor grocery spend. We use self-catering accommodation provision, utilisation and visitor expenditure rates as key factors driving visitor spend. We identify that the use of visitor accommodation accounts for the spatial and temporal complexities of visitor demand that may be overlooked when using alternative approaches, such as the up-scaling of residential demand. Using a spatial interaction model, we demonstrate that our expenditure estimates can be used to generate store level revenue estimation within tourist resorts, and we make a number of recommendations for service provision and store location planning in these areas
Chemical interaction, interfacial effect and the microstructural characterization of the induced zinc–aluminum–Solanum tuberosum in chloride solution on mild steel
In this study, we report the effect of Solanum tuberosum (ST) as a strong
additive on the morphological interaction, wear, and hardness properties of electroplated
zinc coating in chloride bath solutions. The structural and the mechanical
behavior of the Zn–Al–ST coating were studied and compared with the properties of
Zn coatings. Characterization of the electrodeposited coatings were carried out
using scanning electron microscopy, energy dispersive spectrometer, AFM, and
X-ray diffraction techniques. The adhesion between the coatings and substrate was
examined mechanically using hardness and wear techniques. From the results,
amorphous Zn–Al–ST coatings were effectively obtained by electrodeposition using
direct current. The coating morphology was revealed to be reliant on the bath
composition containing strong leveling additives. From all indications, ST content
contribute to a strong interfacial surface effect leading to crack-free and better
morphology, good hardness properties, and improved wear resistance due to the
precipitation of Zn2Si and Zn7Al2Si3. Hence, addition of ST is beneficial for the
structural strengthening, hardness, and wear resistance properties of such coatings
Исследование изменений твёрдости поверхности при азотировании сталей
Contact allergies are complex diseases, and one of the important challenges for public health and immunology. The German 'Federal Institute for Risk Assessment' hosted an 'International Workshop on Contact Dermatitis'. The scope of the workshop was to discuss new discoveries and developments in the field of contact dermatitis. This included the epidemiology and molecular biology of contact allergy, as well as the development of new in vitro methods. Furthermore, it considered regulatory aspects aiming to reduce exposure to contact sensitisers. An estimated 15-20% of the general population suffers from contact allergy. Workplace exposure, age, sex, use of consumer products and genetic predispositions were identified as the most important risk factors. Research highlights included: advances in understanding of immune responses to contact sensitisers, the importance of autoxidation or enzyme-mediated oxidation for the activation of chemicals, the mechanisms through which hapten-protein conjugates are formed and the development of novel in vitro strategies for the identification of skin-sensitising chemicals. Dendritic cell cultures and structure-activity relationships are being developed to identify potential contact allergens. However, the local lymph node assay (LLNA) presently remains the validated method of choice for hazard identification and characterisation. At the workshop the use of the LLNA for regulatory purposes and for quantitative risk assessment was also discussed
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