301 research outputs found

    Studying bath exhaustion as a method to apply microcapsules on fabrics

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    [EN] Textile industry is one of the fields that have increased their consumption of microcapsules. They can be applied to textiles using different methods, such as, padding, bath exhaustion, spraying and foaming. Although the most extended industrial application is by padding, commercial brands also suggest bath exhaustion as a possible procedure. In the research reported herein, bath exhaustion treatments are compared to padding. X-ray photoelectronic spectroscopy (XPS) technique showed that it was a suitable method to detect microcapsules¿presence on fabric surface. Results reported that high concentrations were required to obtain similar behaviours to those of padding. Moreover, we suggested reusing bath exhaustion baths, in order to minimise the loss of so much product in wastewater. We concluded that it was not possible because microcapsules de flate following contact with water for a per- iod of time, and what is more interesting, microcapsule preparation must be done immediately before use, so as to avoid microcapsule de flation due to contact with water.Authors gratefully acknowledge the financial support received by this research project from the Spanish government in the programme "Plan Nacional 2008-2011" reference Mat 2009-14210-C02-01.Bonet Aracil, MA.; Capablanca Francés, L.; Monllor Pérez, P.; Díaz García, P.; Montava Seguí, IJ. (2012). Studying bath exhaustion as a method to apply microcapsules on fabrics. Journal of the Textile Institute. 103(6):629-635. doi:10.1080/00405000.2011.596665S6296351036Chang, C. P., Yamamoto, T., Kimura, M., Sato, T., Ichikawa, K., & Dobashi, T. (2003). Release characteristics of an azo dye from poly(ureaurethane) microcapsules. Journal of Controlled Release, 86(2-3), 207-211. doi:10.1016/s0168-3659(02)00366-8Fan, Y. F., Zhang, X. ., Wang, X. ., Li, J., & Zhu, Q. . (2004). Super-cooling prevention of microencapsulated phase change material. Thermochimica Acta, 413(1-2), 1-6. doi:10.1016/j.tca.2003.11.006Giroud, F., Pernot, J. M., Brun, H., & Pouyet, B. (1995). Optimization of microencapsulation of acrylic adhesives. Journal of Microencapsulation, 12(4), 389-400. doi:10.3109/02652049509087251Gisbert, J., Ibañez, F., Bonet, M., Monllor, P., Díaz, P., & Montava, I. (2009). Increasing hydration of the epidermis by microcapsules in sterilized products. Journal of Applied Polymer Science, 113(4), 2282-2286. doi:10.1002/app.30210Hawlader, M. N. A., Uddin, M. S., & Khin, M. M. (2003). Microencapsulated PCM thermal-energy storage system. Applied Energy, 74(1-2), 195-202. doi:10.1016/s0306-2619(02)00146-0Kapuśniak, J., & Tomasik, P. (2006). Lipid microencapsulation in starch. Journal of Microencapsulation, 23(3), 341-348. doi:10.1080/02652040600687571Li, S., Lewis, J. E., Stewart, N. M., Qian, L., & Boyter, H. (2008). Effect of finishing methods on washing durability of microencapsulated aroma finishing. Journal of the Textile Institute, 99(2), 177-183. doi:10.1080/00405000701489701Long, Y., York, D., Zhang, Z., & Preece, J. A. (2009). Microcapsules with low content of formaldehyde: preparation and characterization. Journal of Materials Chemistry, 19(37), 6882. doi:10.1039/b902832cMadene, A., Jacquot, M., Scher, J., & Desobry, S. (2006). Flavour encapsulation and controlled release - a review. International Journal of Food Science and Technology, 41(1), 1-21. doi:10.1111/j.1365-2621.2005.00980.xMonllor, P., Bonet, M. A., & Cases, F. (2007). Characterization of the behaviour of flavour microcapsules in cotton fabrics. European Polymer Journal, 43(6), 2481-2490. doi:10.1016/j.eurpolymj.2007.04.004Monllor, P., Sánchez, L., Cases, F., & Bonet, M. A. (2009). Thermal Behavior of Microencapsulated Fragrances on Cotton Fabrics. Textile Research Journal, 79(4), 365-380. doi:10.1177/0040517508097520Monllor, P., Capablanca, L., Gisbert, J., Díaz, P., Montava, I., & Bonet, Á. (2009). Improvement of Microcapsule Adhesion to Fabrics. Textile Research Journal, 80(7), 631-635. doi:10.1177/0040517509346444Nelson, G. (2008). Microencapsulation in textile finishing. Review of Progress in Coloration and Related Topics, 31(1), 57-64. doi:10.1111/j.1478-4408.2001.tb00138.xNelson, G. (2002). Application of microencapsulation in textiles. International Journal of Pharmaceutics, 242(1-2), 55-62. doi:10.1016/s0378-5173(02)00141-2Paya, J.G., Bonet, M.A., Aboy, P.M.R. & Perez, P.M. (2010). Insect Repellent Textile. US Patent 2010/0183690 A1.Rjiba, N., Nardin, M., Drean, J.-Y., & Frydrych, R. (2009). Comparison of surfaces properties of different types of cotton fibers by inverse gas chromatography. Journal of Polymer Research, 17(1), 25-32. doi:10.1007/s10965-009-9286-7SAWADA, K., & URAKAWA, H. (2005). Preparation of photosensitive color-producing microcapsules utilizing in situ polymerization method. Dyes and Pigments, 65(1), 45-49. doi:10.1016/j.dyepig.2004.06.021Stolnik, S., Illum, L., & Davis, S. S. (1995). Long circulating microparticulate drug carriers. Advanced Drug Delivery Reviews, 16(2-3), 195-214. doi:10.1016/0169-409x(95)00025-3Topalovic, T., Nierstrasz, V. A., Bautista, L., Jocic, D., Navarro, A., & Warmoeskerken, M. M. C. G. (2007). Analysis of the effects of catalytic bleaching on cotton. Cellulose, 14(4), 385-400. doi:10.1007/s10570-007-9120-5Wegmüller, R., Zimmermann, M. B., Bühr, V. G., Windhab, E. J., & Hurrell, R. F. (2006). Development, Stability, and Sensory Testing of Microcapsules Containing Iron, Iodine, and Vitamin A for Use in Food Fortification. Journal of Food Science, 71(2), S181-S187. doi:10.1111/j.1365-2621.2006.tb08923.xFras Zemljič, L., Strnad, S., Šauperl, O., & Stana-Kleinschek, K. (2009). Characterization of Amino Groups for Cotton Fibers Coated with Chitosan. Textile Research Journal, 79(3), 219-226. doi:10.1177/0040517508093592ZHANG, Z. (1999). Mechanical strength of single microcapsules determined by a novel micromanipulation technique. Journal of Microencapsulation, 16(1), 117-124. doi:10.1080/026520499289365Zhang, X., Tao, X., Yick, K., & Wang, X. (2003). Structure and thermal stability of microencapsulated phase-change materials. Colloid and Polymer Science, 282(4), 330-336. doi:10.1007/s00396-003-0925-

    A characteristics framework for Semantic Information Systems Standards

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    Semantic Information Systems (IS) Standards play a critical role in the development of the networked economy. While their importance is undoubted by all stakeholders—such as businesses, policy makers, researchers, developers—the current state of research leaves a number of questions unaddressed. Terminological confusion exists around the notions of “business semantics”, “business-to-business interoperability”, and “interoperability standards” amongst others. And, moreover, a comprehensive understanding about the characteristics of Semantic IS Standards is missing. The paper addresses this gap in literature by developing a characteristics framework for Semantic IS Standards. Two case studies are used to check the applicability of the framework in a “real-life” context. The framework lays the foundation for future research in an important field of the IS discipline and supports practitioners in their efforts to analyze, compare, and evaluate Semantic IS Standard

    Efficacy and safety of the anti-IL-12/23 p40 monoclonal antibody, ustekinumab, in patients with active psoriatic arthritis despite conventional non-biological and biological anti-tumour necrosis factor therapy: 6-month and 1-year results of the phase 3, multicentre, double-blind, placebo-controlled, randomised PSUMMIT 2 trial

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    Objective: Assess ustekinumab efficacy (week 24/week 52) and safety (week 16/week 24/week 60) in patients with active psoriatic arthritis (PsA) despite treatment with conventional and/or biological anti-tumour necrosis factor (TNF) agents. Methods: In this phase 3, multicentre, placebo-controlled trial, 312 adults with active PsA were randomised (stratified by site, weight (≤100 kg/>100 kg), methotrexate use) to ustekinumab 45 mg or 90 mg at week 0, week 4, q12 weeks or placebo at week 0, week 4, week 16 and crossover to ustekinumab 45 mg at week 24, week 28 and week 40. At week 16, patients with <5% improvement in tender/swollen joint counts entered blinded early escape (placebo→45 mg, 45 mg→90 mg, 90 mg→90 mg). The primary endpoint was ≥20% improvement in American College of Rheumatology (ACR20) criteria at week 24. Secondary endpoints included week 24 Health Assessment Questionnaire-Disability Index (HAQ-DI) improvement, ACR50, ACR70 and ≥75% improvement in Psoriasis Area and Severity Index (PASI75). Efficacy was assessed in all patients, anti-TNF-naïve (n=132) patients and anti-TNF-experienced (n=180) patients. Results: More ustekinumab-treated (43.8% combined) than placebo-treated (20.2%) patients achieved ACR20 at week 24 (p<0.001). Significant treatment differences were observed for week 24 HAQ-DI improvement (p<0.001), ACR50 (p≤0.05) and PASI75 (p<0.001); all benefits were sustained through week 52. Among patients previously treated with ≥1 TNF inhibitor, sustained ustekinumab efficacy was also observed (week 24 combined vs placebo: ACR20 35.6% vs 14.5%, PASI75 47.1% vs 2.0%, median HAQ-DI change −0.13 vs 0.0; week 52 ustekinumab-treated: ACR20 38.9%, PASI75 43.4%, median HAQ-DI change −0.13). No unexpected adverse events were observed through week 60. Conclusions: The interleukin-12/23 inhibitor ustekinumab (45/90 mg q12 weeks) yielded significant and sustained improvements in PsA signs/symptoms in a diverse population of patients with active PsA, including anti-TNF-experienced PsA patients

    Application of Chinese Jun-Cao technique for the production of Brazilian Ganoderma lucidum strains

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    Ganoderma lucidum is a medicinal mushroom traditionally used in China against a wide range of diseases such as cancer and also for its prevention. In this work, commercial Chinese strains G. lucidum were compared to wild Brazilian strains aiming to determine the cultivation potential through the use of Jun-Cao. Six formulations were tested and the strains presented good response to the applied method. In general, the mixture between the grass and wood was well suited for the basidiomycetes, contributing to the preparation of substrates that generated better results in Jun Cao

    Electromagnetic Correlates of Musical Expertise in Processing of Tone Patterns

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    Using magnetoencephalography (MEG), we investigated the influence of long term musical training on the processing of partly imagined tone patterns (imagery condition) compared to the same perceived patterns (perceptual condition). The magnetic counterpart of the mismatch negativity (MMNm) was recorded and compared between musicians and non-musicians in order to assess the effect of musical training on the detection of deviants to tone patterns. The results indicated a clear MMNm in the perceptual condition as well as in a simple pitch oddball (control) condition in both groups. However, there was no significant mismatch response in either group in the imagery condition despite above chance behavioral performance in the task of detecting deviant tones. The latency and the laterality of the MMNm in the perceptual condition differed significantly between groups, with an earlier MMNm in musicians, especially in the left hemisphere. In contrast the MMNm amplitudes did not differ significantly between groups. The behavioral results revealed a clear effect of long-term musical training in both experimental conditions. The obtained results represent new evidence that the processing of tone patterns is faster and more strongly lateralized in musically trained subjects, which is consistent with other findings in different paradigms of enhanced auditory neural system functioning due to long-term musical training

    The rapid atmospheric monitoring system of the Pierre Auger Observatory

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    The Pierre Auger Observatory is a facility built to detect air showers produced by cosmic rays above 10(17) eV. During clear nights with a low illuminated moon fraction, the UV fluorescence light produced by air showers is recorded by optical telescopes at the Observatory. To correct the observations for variations in atmospheric conditions, atmospheric monitoring is performed at regular intervals ranging from several minutes (for cloud identification) to several hours (for aerosol conditions) to several days (for vertical profiles of temperature, pressure, and humidity). In 2009, the monitoring program was upgraded to allow for additional targeted measurements of atmospheric conditions shortly after the detection of air showers of special interest, e. g., showers produced by very high-energy cosmic rays or showers with atypical longitudinal profiles. The former events are of particular importance for the determination of the energy scale of the Observatory, and the latter are characteristic of unusual air shower physics or exotic primary particle types. The purpose of targeted (or 'rapid') monitoring is to improve the resolution of the atmospheric measurements for such events. In this paper, we report on the implementation of the rapid monitoring program and its current status. The rapid monitoring data have been analyzed and applied to the reconstruction of air showers of high interest, and indicate that the air fluorescence measurements affected by clouds and aerosols are effectively corrected using measurements from the regular atmospheric monitoring program. We find that the rapid monitoring program has potential for supporting dedicated physics analyses beyond the standard event reconstruction

    Trigger and Aperture of the Surface Detector Array of the Pierre Auger Observatory

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    The surface detector array of the Pierre Auger Observatory consists of 1600 water-Cherenkov detectors, for the study of extensive air showers (EAS) generated by ultra-high-energy cosmic rays. We describe the trigger hierarchy, from the identification of candidate showers at the level of a single detector, amongst a large background (mainly random single cosmic ray muons), up to the selection of real events and the rejection of random coincidences. Such trigger makes the surface detector array fully efficient for the detection of EAS with energy above 3×10183\times 10^{18} eV, for all zenith angles between 0^\circ and 60^\circ, independently of the position of the impact point and of the mass of the primary particle. In these range of energies and angles, the exposure of the surface array can be determined purely on the basis of the geometrical acceptance.Comment: 29 pages, 12 figure
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