1,221 research outputs found

    Acceptability and Marketability of Lipote Vinegar

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    This study aimed to determine the acceptability and marketability of Lipote Vinegar in the groups of vinegar sellers, street food vendors, and cook/housewife-respondents of Barbara Villas 1, Barangay Silangan, San Mateo, Rizal during the academic year 2022-2023. This study used an experimental method of research which involved 90 respondents who were selected through purposive sampling. It was found out that the three groups of respondents evaluated the level of acceptability of Lipote vinegar in terms of appearance, flavor, aroma, and texture as Extremely Agreeable (EA) with the grand weighted mean of 8.52 for the vinegar seller respondents, 8.49 for the street food vendor-respondents and 8.11 for the cook or housewife-respondents. In addition, the vinegar seller and the street food vendors’ respondents evaluated the level of marketability of the Lipote vinegar as Very Highly Potential (VHP) with grand weighted mean of 4.72 for the group of vinegar sellers and 4.62 for the group of street food vendors in terms of supply availability, consumer demand, sustainability and profitability, while the group of the cooks/housewives evaluated the level of Lipote Vinegar as Highly Potential (HP) with a grand weighted mean of 4.33. Comments and suggestions were provided by the respondents to further improve the product

    Apollo logistics support systems molab studies. lunar shelter/rover conceptual design and evaluation

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    Lunar shelter/rover conceptual design for lunar mobile laboratory /Molab/ Apollo project Logistics Support Syste

    A note on the combustion of blends of diesel and soya, sunflower and rapeseed vegetable oils in a light boiler

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    Producción CientíficaThis paper deals with the study of the vegetable oils (VO) used as fuel for heating. The properties of sunflower, rape and soya oils are studied and these are compared with the properties of C-diesel fuel (used for heating domestic purposes in Spain). The mixtures of VO and diesel are studied and characterized and, finally, the results of a series of combustion trials of the mixtures in a conventional heating installation with a mechanical pulverization burner are presented. The results show that viscosity of VO limits the use of blends up to 40% of them, and the oxygen present in their structures contributes to an efficiency gai

    The Impact of Direct Subsidies in Spain before and after the CAP'92 Reform

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    This paper focuses on the changes in farm e±ciency as a tool for policy analysis. The methodology is applied to the introduction of direct payments (DP) and the price sup- port reduction a®ecting large samples of individual farms with joint animal and vegetal production (comparing before and after CAP'92). The case study is justi¯ed for their relevance for Mediterranean forest and grazing land preservation in Spain. Using a non parametric method (DEA) we do not specify the production function of the farms, and can explain the impact of the direct payments on environmental adaptation and e±ciency for animal orientated farms before and after the (DP) introduction in 1992 (CAP'92 reform). Even though the direct payments increased sharply after the CAP'92 reform, in general, the new direct payment system turns out to be insu±cient to o®- set the fact that less environmentally friendly farms remain much more \e±cient," i.e. pro¯table for the farmer. The paper also studies the relationship of e±ciency with other policy relevant factors such as economic size. The results show that after the CAP'92 reform, the subsidy schedule was even more correlated with farm size than before, which we ¯nd to be counterproductive.

    Controllable direction of liquid jets generated by thermocavitation within a droplet.

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    A high-velocity fluid stream ejected from an orifice or nozzle is a common mechanism to produce liquid jets in inkjet printers or to produce sprays among other applications. In the present research, we show the generation of liquid jets of controllable direction produced within a sessile water droplet by thermocavitation. The jets are driven by an acoustic shock wave emitted by the collapse of a hemispherical vapor bubble at the liquid-solid/substrate interface. The generated shock wave is reflected at the liquid-air interface due to acoustic impedance mismatch generating multiple reflections inside the droplet. During each reflection, a force is exerted on the interface driving the jets. Depending on the position of the generation of the bubble within the droplet, the mechanical energy of the shock wave is focused on different regions at the liquid-air interface, ejecting cylindrical liquid jets at different angles. The ejected jet angle dependence is explained by a simple ray tracing model of the propagation of the acoustic shock wave inside the droplet

    Combustion of Soya Oil and Diesel Oil Mixtures for Use in Thermal Energy Production

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    Producción CientíficaIn August 2005, Spain approved the Plan for Renewable Energy Sources for the period 2005-2010 (P.E.R.), including co-combustion installations. Co-combustion in the P.E.R. aims to increase power output by 12,185.3 GWh in five years and shows great interest in studies of the combustion of mixtures of fossil and bio-combustible fuels. This paper presents studies of the co-combustion of soya oil and diesel for thermal heating. The paper begins with a characterization of soya oil as well as mixtures of this oil, with diesel, as fuels. The combustion of the soya oil mixtures and diesel is made in an installation, where the pressure of injection as well as the air volume of the burner can be changed. The obtained results inside to be the environmental average legislation and a greater efficiency of combustion is found. The conclusions show that the use of mixtures of soya oil and Diesel for producing thermal energy in conventional equipment is feasible

    Analytical method for perturbed frozen orbit around an Asteroid in highly inhomogeneous gravitational fields : A first approach

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    This article provides a method for nding initial conditions for perturbed frozen orbits around inhomogeneous fast rotating asteroids. These orbits can be used as reference trajectories in missions that require close inspection of any rigid body. The generalized perturbative procedure followed exploits the analytical methods of relegation of the argument of node and Delaunay normalisation to arbitrary order. These analytical methods are extremely powerful but highly computational. The gravitational potential of the heterogeneous body is rstly stated, in polar-nodal coordinates, which takes into account the coecients of the spherical harmonics up to an arbitrary order. Through the relegation of the argument of node and the Delaunay normalization, a series of canonical transformations of coordinates is found, which reduces the Hamiltonian describing the system to a integrable, two degrees of freedom Hamiltonian plus a truncated reminder of higher order. Setting eccentricity, argument of pericenter and inclination of the orbit of the truncated system to be constant, initial conditions are found, which evolve into frozen orbits for the truncated system. Using the same initial conditions yields perturbed frozen orbits for the full system, whose perturbation decreases with the consideration of arbitrary homologic equations in the relegation and normalization procedures. Such procedure can be automated for the first homologic equation up to the consideration of any arbitrary number of spherical harmonics coefficients. The project has been developed in collaboration with the European Space Agency (ESA)

    La transparencia organizativa y económica en la Web de las fundaciones: un estudio empírico para España

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    A través de los estudios realizados durante las últimas décadas ha quedado demostrado que la transparencia en el sector no lucrativo en general y en las fundaciones en particular, es un elemento clave para la mejora de la confianza de los agentes interesados en la organización. Dicha transparencia puede ser considerada desde diferentes ámbitos y conseguida a través de distintos canales o medios. Este trabajo se centra en el análisis de la transparencia organizativa y económica de las fundaciones, que es mostrada a través de la información que voluntariamente ofrecen estas entidades en sus páginas Web. Antes de pasar a exponer el trabajo empírico, se realiza una revisión teórica de algunos de los estudios publicados sobre el concepto de transparencia y la importancia en el ámbito no lucrativo. Este marco teórico se ha centrado en la rendición de cuentas que realizan, relacionada con su función social y su gestión, desde la perspectiva de la transparencia informativa a través de la Web. Bajo este enfoque se ha diseñado un índice de transparencia que se refiere a la información que las fundaciones ofrecen en sus Webs de forma voluntaria. El índice ha sido elaborado ad hoc y se ha aplicado a un grupo de grandes fundaciones empresariales, obteniéndose datos de carácter descriptivo e inferencial, por cuanto se determina, mediante un análisis de regresión lineal múltiple, si hay correlación estadística entre la transparencia económica y la transparencia organizativa obtenida a través de la información publicada on line y cuantificada en las variables resultantes del índice. A la luz del análisis se obtienen conclusiones acerca del nivel de transparencia que tienen las fundaciones en lo que se refiere a su información organizativa y económica y la relación explicativa entre ambos tipos

    On exploring weakly supervised domain adaptation strategies for semantic segmentation using synthetic data

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    Pixel-wise image segmentation is key for many Computer Vision applications. The training of deep neural networks for this task has expensive pixel-level annotation requirements, thus, motivating a growing interest on synthetic data to provide unlimited data and its annotations. In this paper, we focus on the generation and application of synthetic data as representative training corpuses for semantic segmentation of urban scenes. First, we propose a synthetic data generation protocol, which identifies key features affecting performance and provides datasets with variable complexity. Second, we adapt two popular weakly supervised domain adaptation approaches (combined training, fine-tuning) to employ synthetic and real data. Moreover, we analyze several backbone models, real/synthetic datasets and their proportions when combined. Third, we propose a new curriculum learning strategy to employ several synthetic and real datasets. Our major findings suggest the high performance impact of pace and order of synthetic and real data presentation, achieving state of the art results for well-known models. The results by training with the proposed dataset outperform popular alternatives, thus demonstrating the effectiveness of the proposed protocol. Our code and dataset are available at http://www-vpu.eps.uam.es/publications/WSDA_semantic/Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. This work is part of the preliminary tasks related to the SEGA-CV (TED2021-131643A-I00) and the HVD (PID2021-125051OB-I00) projects funded by the Ministerio de Ciencia e Innovacion of the Spanish Governmen

    Biological Degradation and Biostability of Nanocomposites Based on Polysulfone with Different Concentrations of Reduced Graphene Oxide

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    Increasing incorporation of rGO in the polysulfone polymer generates materials with improved chemical and mechanical stability and less prone to biodegradation at the end of the nanocomposite life cycle. The results of attenuated total reflection infrared (ATR?IR) and mechanical strength, after exposure to wastewater influent, show that the increasing concentrations of rGO into the polymer matrix reduce changes in the nanocomposite properties. The increasing incorporation of rGO also increases growth inhibition of the wastewater microbial population on the surface of nanocomposites. Highest biofilm inhibition and material stability are observed with nanocomposites containing 3 wt% rGO. These results suggest that reduction in the material biodegradation is linked to the inhibition of biofilm growth on the nanocomposite surface due to the antimicrobial properties of rGO. This study demonstrates, for the first time, that the amount of rGO incorporated in the nanocomposite impact the biodegradability and end of life of polysulfone nanocomposites
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