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Copyright of Ge-Conservación is the property of Instituto del Patrimonio Cultural and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

We present the comparative analysis, throughout an extensive trajectory (6th century to the end of the 19th century), of a set of animal and vegetable fiber yarns that were recovered from archaeological excavations in Antofagasta de la Sierra, Argentine southern Puna. We focus on three themes, as "guiding threads": the raw material, the spinning modes and color use. We discuss continuities and changes over time, and we wonder about their implications in technical aspects and the worldview, especially from the impact of the Hispanic invasion. That is why, from a heuristic point of view, we consider native ontologies, as views more closely located in relation to local archaeological contexts. [ABSTRACT FROM AUTHOR]

In the present investigation, the effects of fiber content (20, 30 and 40 wt%) and annealing heat treatment on the thermal properties of the biocomposite material formed by an isotactic polypropylene polymeric matrix (iPP) reinforced with short bamboo fibers (PP/BF) were studied. The coupling agent was iPP with grafting of maleic anhydride molecules (MAPP). The Differential Scanning Calorimetry (DSC) technique was used to determine the melting temperature (Tm), crystallization temperature (Tc), and degree of crystallinity (Xc) of the biocomposites. The melting temperature of pure PP was not significantly affected by the presence of bamboo fibers. However, the degree of crystallinity of PP increased with fiber content. The annealing heat treatment caused an increase in the Tm of pure PP and PP/BF. The composite with 20 wt% fiber content (PP/20F) annealed achieved the highest Xc (37,47 %). The Tc of polypropylene increased with the presence of fibers, and the PP/20F composite reached the highest value (115 °C). Also, the study of the Tm of the biocomposites in amorphous state was carried out, and it was observed that the sample with a fiber content of 30 wt% presented an endothermic peak at a temperature of approximately 168 °C. [ABSTRACT FROM AUTHOR]

Background and aims: The excellent physical and chemical properties of Abacá and Japan papers make them one of the most used materials in restoration of cultural assets on paper. The objective of this work is to characterize the fibers that compose them and identify plant genera or species that were used in their manufacture. M&M: Fibers from samples of each paper and previously collected reference plant material were disintegrated. The diagnostic characters of the fibers were observed with a photomicroscope and photomicrographs were taken. Subsequently, the homologous characters were compared by relating the Abacá paper fiber samples with those of Musa sp. and the Japan paper samples with Broussonetia sp. and Euonymus sp. Results: There were coincidences between the diagnostic characters of the paper fibers of Abacá and Musa sp. Regarding the Japan paper samples, there were results consistent with Broussonetia sp. but not with Euonymus sp. Conclusions: According to the results observed between the Abacá paper fibers and the samples of the collected living material, we infer that the Abacá paper contains fibers of Musa sp. In the Japan paper samples, the similarities observed between the diagnostic characters of the fibers with respect to the reference plant samples indicate the presence of Broussonetia sp. fibers. There is no evidence of fibers of Euonymus sp. [ABSTRACT FROM AUTHOR]

With the aim of mimicking silks physico-chemical properties, here we developed urethane copolymers based on semicrystalline segments formed by hexamethylene diisocyanate (HDI) and ethylen glycol (EG), and quaternizable amorphous segments formed by HDI and methylene diethanolamine (MDEA). The polyurethane (PU) amorphous segments provide water solubility in aqueous media upon MDEA quaternization, once the ratio between crystalline to amorphous segments is lower than 4. In the presence of salts, these PUs follow an inverse Hofmeister series, which has been used to synthesize fibers based on the kosmotropic phenomena, analogous to silk fibers formation in nature. These polymers have the potential to be used as waterborne adhesives or drugs encapsulating agents. [ABSTRACT FROM AUTHOR]

Real estate financialisation in Mexico is moving towards a process of increasing securitization based on investment instruments that entered the stock market. One of them is the Real Estate Investment Trusts (REIT, known in Mexico as FIBRAS), which group income-generating properties from the productive sector: offices, shopping centers, hotels, industrial buildings, among others. This paper examines the participation of this instrument in the financialized urbanization process through the analysis of its property portfolios and their diffusion in the urban system. The results show a process of specialization and diversification of the trusts; Its spatial logic reveals uneven patterns, with a greater presence of commercial properties and specialized services in the main metropolitan areas, while industrial and logistics warehouses were located in rural areas and the peripheries of urban centers that operate as nodes of the chains global value of manufacturing sectors. The expansion of properties in the Metropolitan Area of the Valley of Mexico reflect the role that this instrument plays in the consolidation of service-oriented enclaves. [ABSTRACT FROM AUTHOR]

Copyright of Revista Venezolana de Gerencia (RVG) is the property of Revista de Filosofia-Universidad del Zulia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Inventum. Ingenieria, Tecnologia e Investigacion is the property of Corporacion Universitaria Minuto de Dios and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

From a perspective akin to the New materialism field, our analysis is more interested in the textile materialization processes, rather than their materiality. This entails an understanding of the fibers in their fluid condition, as a material that is constantly developing and in permanent dialogue, through mediation networks, with humans and other-than-humans. We intend to assemble, under a common perspective, different methodological approaches that are generally not articulated in research, as well as different scales of perception of the material. A multitemporal vision is included, which seeks to rescue the persistent points and connections between different pasts. These proposals were applied to depositional pre-Hispanic contexts belonging to a sector of Puna de Antofagasta de la Sierra (NW of Catamarca, Argentina). The textile pieces under analysis display particular space-time associations, which refer to the 6th-7th and 14th-15th centuries of the Christian Era, approximately. [ABSTRACT FROM AUTHOR]

In the present investigation, the tensile mechanical properties of the isotactic polypropylene (PP) biocomposite material reinforced with randomly oriented short bamboo fiber bundles were determined. Samples of the material with different reinforcement contents (20, 30 and 40%) were prepared, using polypropylene with grafts of maleic anhydride molecules (MAPP) as coupling agent. A group of these samples were subjected to an accelerated thermal aging treatment to evaluate the effect of said treatment on the tensile properties of the biocomposite. Tensile tests were carried out at different deformation rates (10 and 50 mm/min) and an increase in tensile strength (29 to 45 MPa) and elastic modulus (1 to 3 GPa) of the PP with the fiber content was obtained. For different stretching speeds, better resistance at high speeds was obtained. Thermal aging for 24 hours at 100 °C increased the resistance of pure PP. For the biocomposites, a low resistance was obtained in the samples aged in greater time (98 °C, 10 days). Through scanning electron microscopy, a microstructural characterization was carried out that allowed explaining the improvement of the resistance of the fiber reinforced PP, and in some cases, the loss of resistance due to heat treatment. [ABSTRACT FROM AUTHOR]

The present works deals with the protein aqueous extraction from extruded-expelled soybean meals, followed by the protein isoelectric precipitation. The solid effluent (i.e. residual meal) is also analyzed for evaluating its potential value-added regarding mainly its dietary fiber content. For these purposes, extruded-expelled meals provided by Argentinian small and medium companies were evaluated, characterized and subjected to protein and fiber recovery processes under a wide range of operating conditions. Results were analyzed by ANOVA method and revealed potential processing alternatives for generating value-added by-products. [ABSTRACT FROM AUTHOR]

The present research study described the anatomical characteristics and physical properties of two timber species from San Gabán, department of Puno. The macroscopic and microscopic characters were described according to the standard list of the IAWA (1989), and the physical properties according to Peruvian Technical Standards. The results show both species with diffuse porosity, Miconia amazonica with medium pores, vessel length 365 μm, simple perforation plate, parenchyma in bands, heterogeneous rays, height 120 μm. Erithrina ulei with straight grain, medium texture and medium gloss, veined overlapping arches, with sapwood susceptible to fungal attack, diameter of pores 246.2 μm and vessel length 253.5 μm, 2-4 pores/mm2, simple perforation plate, confluent paratracheal parenchyma, stratified, heterogeneous and homogeneous rays, both have libriform fibers, length 1747 μm, 770 μm, and wall thickness 3.3 μm, 3 μm, respectively. Miconia amazonica, basic density and volumetric contraction medium (0.57 g/cm³ and 12.73% respectively), while Erythrina ulei, very low density (0.29 g/cm³), low volumetric contraction (8.12%) and both species have very stable wood. [ABSTRACT FROM AUTHOR]

The objective was to evaluate the inclusion of cooked quinoa flour Altiplano (HQA), soluble fiber of tara endosperm (FST) and insoluble of agave leaves (FIA) on sensory properties of cookies and their physiological response in rats. Sensory tests were performed with the participation of consumers by hedonic test with unstructured scale. For the biological evaluation, 20 Holtzman rats were used that received during 30 days the diets containing cookies with: T1 = wheat flour, T2 = 15% HQA, T3 = 2.85% FST + 2.85% FIA, T4 = 15% HQA + 2,85% FST + 2.85% FIA. The determination of apparent biological value (VBA) and somatic indicators (body mass index, Lee index, thoracic and abdominal circumference) was made. The data were analyzed under a completely randomized design and for comparison of means the Tukey test was used by the Minitab v.17.1.0 program. Cookies containing quinoa had greater acceptability (p < 0.05) compared to the other treatments. There were no differences (p > 0.05) between the treatments for VBA and somatic indicators. The cookies including quinoa cooked Altiplano, independently or in combination, had greater apparent digestibility and acceptability by consumers; moreover, all the treatments maintained an adequate physiological response in rats. [ABSTRACT FROM AUTHOR]

Copyright of Inventum. Ingenieria, Tecnologia e Investigacion is the property of Corporacion Universitaria Minuto de Dios and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Agro Productividad is the property of Colegio de Postgraduados and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This review article presents different ways to synthesize polymer nanowires emphasizing the electrospinning technique, which is a simple, versatile, and suitable process for the production of unidimensional structures (1D), and the parameters that should be considered when using this method; besides, it accents the importance of processing parameters (voltage, distance, and flow), solution parameters (concentration, viscosity, and superficial tension), and environmental parameters (temperature and humidity). Finally, it shows the different applications of nanowires in fields such as energy, tissue engineering, environment, and food. [ABSTRACT FROM AUTHOR]

The present article will try to concentrate on the potential role that information and communication technologies can play in the public space, and in particular on its expansion that is conceived here as material and constructible as the most accustomed and socially recognized, inexcusably urban and traditionally architectural. At the same time, it tries to question the diverse conceptions of democracy, citizenship and its relation with that public space in its material scope and its modes of appropriation with the technologies of information and communication. In this way, we question the paralyzing inertia that has characterized intercommunicative relations between the State, parties, social movements and civil society, and which are still as blocked as they have been throughout history, among other reasons, by the conceptual narrowness of hegemonic conceptions of public space. [ABSTRACT FROM AUTHOR]

This research proposes a development around the management of residues in banana crops, being a sustainable idea regarding the extraction and acquisition of fibers with innovative qualities that possess ZnO2 nanoparticles (NPs) as the antimicrobial capacity. The purpose of this research was to nanostructure fibers from banana waste with zinc peroxide NPs as a sustainable proposal, taking into account optimization factors in processes for the synthesis of nanoparticles. The most relevant results were obtained in the physical scanning electron microscopy (SEM), where the nanometer size of the synthesized particles was 94 nm. The hydrophobic factor of the banana fibers was shown above cotton fibers. [ABSTRACT FROM AUTHOR]

It is in the interest of the engineering, the biotechnological development of techniques for the treatment of water for the removal of contaminants, taking advantage of the properties of the fibers of Luffa cylindrica (FLC). So exposed the arguments explained in several investigations carried out throughout the world in which describes a suggestive scene of valid reasons to consider the fiber of the sponge, as a material industrially promising and sustainable, suitable for the realization of removal treatments of contaminants and on the separation of substances immersed in arrays fluid. They also explain the use of fibers such as array immobilising to sustain microbial communities active implanted with specific purposes; even to understand the architecture and the mechanical properties of the FLc, explores its use as an aggregate in the obtaining of composite materials in the production of new substances and their capacity to retain moisture. Therefore, the approach that has been interested in the present work refers to the description of the description of the processes of adsorption and immobilization in which has been involved in the FLc doing a review of experiences research. At the same time, the reasons that have allowed describe techniques and that makes it possible to provide solutions to the problem of contaminant removal and treatment of water, are studied. [ABSTRACT FROM AUTHOR]

Introduction: Adiponectin, an adipocyte derived peptide, has anti-inflammatory and antiatherogenic effects, and improves insulin sensitivity. However, little is known about dietary predictors and their interactions with lifestyle on adiponectin concentrations, in apparently healthy young adults.Objective: To evaluate the associations between plasma concentrations of adiponectin with dietary components and lifestyle in apparently healthy young adults.Methods: Anthropometric and body composition, systolic and diastolic blood pressure, diet and lifestyle data of 157 healthy young adults, aged 18 and 35, were collected and analyzed. Blood samples were collected after fasting for 12 hours to determine adiponectin concentrations. Dietary and anthropometric indexes were calculated and analyzed.Results: Adiponectin concentrations were significantly higher for women compared to men; and there was an indirect and significant correlation between adiponectin concentrations with BMI. There was a significant association between adiponectin concentrations with the healthy eating index, calories, lipids, proteins, fibers, riboflavin, and phosphorus, among others; and a tendency with carbohydrates and niacin. In multiple linear regression analysis, fiber and riboflavin (r2 = 0.0928; p = 0.0013) and carbohydrates and phosphorus were associated with the concentrations of adiponectin. The association with carbohydrates and phosphorus suffered interaction with gender (r2 = 0.2400; p < 0.0001), as well as the association with phosphorus also suffered interaction with physical activity (r2 = 0.1275; p = 0.0003).Conclusion: Plasma concentrations of adiponectin, in healthy young adults, seem to be modulated by components of diet depending on gender and physical activity. [ABSTRACT FROM AUTHOR]

The Creole sheep breed is the founder of the argentine sheep heritage and it widespreads through almost all the provinces. There are few studies aimed at assessing this germplasm's wool quality. The objective was to characterize the Creole Argentinean sheep's wool, by using the main measures that determine its quality and commercial value. The sampling concerned flocks located in all the four provinces: Salta (SA) (n= 44); Santiago del Estero (SE) (n= 60); Corrientes (CO) (n= 40) and Buenos Aires (BA) (n= 59). Wool samples were taken from each sheep and the following variables were determined: mean fibre diameter (DMF); standard deviation of the mean fibre diameter (DE_DMF); mean fibre curvature (CU); comfort factor (FC) and staple length (LM). The statistical analysis included analysis of variance (ANOVA), principal components analysis (PCA) and cluster analysis (CA). The sheep from SA stood out from the ones from the rest of the regions because of their low DMF= 26,1 ± 2,5 μm and DE_DMF= 6.2 ± 1.5 μm, their higher CU= 78.5 ± 13.5 º/mm and FC= 78.8 ± 12.7 %, while the ones from BA presented a LM= 123.0 ± 36.6 mm value, which was remarkably higher than the ones from the other regions and CO, which showed a higher DMF= 35.9 ± 4.1 μ. The PCA highlighted two components that explained the 90 % of the variability. The first one distinguishes SA from BA and shows the existing overlap between SE and CO. The second one differentiates BA from the rest of the regions. From the CA, it can be concluded that the sheep from SE and CO formed only one group, what defined three regions: SA, BA and SE-CO. None of the three regions responds to the carpet-wool o Criolla category according to the official wool classification, for that reason, it is necessary to build a Creole wool map for the Argentine Republic. [ABSTRACT FROM AUTHOR]

Copyright of Caldasia is the property of Universidad Nacional de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Alginate fibers have been prepared through the coagulation-spinning method using different multivalent metal sulfate salts as coagulating agents. The impact of the nature of the cation, ZnSO4 concentration on the coagulating capacity, as well as on resulting fibers morphology and mechanical properties has been studied. The impact of the drawing ratio on the mechanical properties of the fibers has also been studied. The fibers have been analyzed by optical microscopy, Fourier transformed infrared spectroscopy, X-ray diffraction and mechanically through uniaxial stretching. [ABSTRACT FROM AUTHOR]

Copyright of Revista Chilena de Antropologia is the property of Universidad de Chile and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Zooarchaeological studies have provided from each particular analytical way, substantive information about the occupational history of hunter-gatherer societies, installed in our NOA early Holocene, contemplating the synchronous variability as well their development. In a coevolutionary sense, it has established an ongoing and intensive relationship of humans with some animal population, as in the case of camelids. It has been a source of innovations in the field of resources management, which has led to economic reconversion and complexity of the organization and social networks. We present in this paper the contribution that could be recognized provides the morphological study of fibers, cortical cells and furs, in relation to the identification of taxa, availability, utilization and processes involving the relation human-fauna. [ABSTRACT FROM AUTHOR]

Copyright of Cuadernos del Centro de Estudios de Diseño y Comunicación is the property of Cuadernos del Centro de Estudios de Diseno y Comunicacion and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

During the analysis of fracture processes of composite materials we deal with the interaction of different factors that have a very particular character. There exist a substantial variation between the breaking resistance of the fibers, the resistance of the matrix and the adhesion resistance of the matrix, as well as the arrangement of the reinforcement which is erratic and random. The unpredictable interaction between these factors during the fracture of the compound is not fully described by using probabilistic methods. The development of computational methods opens an enormous amount of possibilities to simulate the influence of these factors during the fracture process of the composite. The use of computational methods is complex because the algorithms must synthesize both physical and mechanical problems of materials considering at the same time the real structure of the materials. Because of that, the use of fundamental criteria is suitable in order to create the simulation of the delamination processes in cracked fibers and the development of cracks in the matrix. [ABSTRACT FROM AUTHOR]

This work aims to design and build a machine shredder greens Angustifolia Haw Agave, starting from the determination of the rational values of the variables that influence the pulping process and operating parameters. To project design was based on selecting an appropriate model of shredder machine prototype for conditions agave producers of the State of Oaxaca, Mexico, later by calculation, were determined the dimensions and operating parameters. Finally, experimental model was constructed to determine the optimum values of the defibering gap and of the exit and feed speed of the sheet. This test shows the relationship between the defibering gap and defibered quality, besides, the relationship between the input and output speeds of the sheet with respect to energy consumption of the process. [ABSTRACT FROM AUTHOR]

Copyright of Animal Genetic Resources Information is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Information about textile plants used or mentioned in Guarani communities of Misiones Province, Argentina is here given. Methods of harvest and uses of same plants are detailed. The species are classified in three categories; used frequently at present, used occasionally and used in the past. The manuscript is illustrated by means of photographs. [ABSTRACT FROM AUTHOR]

Adult rats malnourished prenatally with a low-protein, isocaloric diet showed smaller median fiber diameter of myelinated and unmyelinated fibers and a higher axonal density in the callosal splenium than controls. These findings suggest (i) that cortico-cortical (interhemispheric) connections are vulnerable to protein malnutrition; and (ii) this may affect interhemispheric conduction velocity, particularly in visual connections. [ABSTRACT FROM AUTHOR]

The support by sol-gel of titanium dioxide appears on polyester fibers using the immersion-diffusion method, using different times of impregnation to determine its effect in the characteristics of the obtained coating. The supported samples were characterized by Scanning Electron Microscopy (SEM), X-Ray Energy Dispersive Spectrometer (EDS), Optical Microscopy (MO) and Fourier Transform Infrared Spectroscopy - Attenuated Total Reflection (FTIR- ATR). The results showed the presence of TiO2 in all prepared systems and different characteristic from the coatings, being the covering obtained to 11 hours the one that displays the best morphologic and structural characteristics. [ABSTRACT FROM AUTHOR]

This study included the determination of the mechanical properties of fiber bundles of Guadua angustifolia based on three factors: age of the culm, height of the culm and thickness of the wall, in order to evaluate the possibility that this fiber bundles can be used as reinforcement in composite materials. Using the tensile strength test the following results were obtained: ultimate tensile strength: 642.58 MPa, the Young's modulus 26.61 GPa and elongation 2,4 percent. The fiber bundles that presented the higher resistance to tensile strength were the intermediate fibers bundles for all the ages, the greater E modulus it was presented for fiber bundles of the outer of mature culms and the smaller elongation it was presented by the outer fiber bundles of the culm. [ABSTRACT FROM AUTHOR]