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Mª Celia Adrián Rodríguez,Elena De Uña-Álvarez 국립민속박물관 2022 International Journal of Intangible Heritage Vol.17 No.-
Environmental sonority, related to viewing, listening and walking along a path, has only seldom been contemplated in the first European Cultural Route, the Way of St James (Camino de Santiago). The research, focused on a section of the Silver Route (Vía de la Plata) variant (Galicia, north-west Iberian Peninsula), defines several sound environments configured by the sound sources, acoustic properties and the culture of the territory. Integrating the environmental sonority in a musical piece facilitates the promotion of knowledge and awareness of the sound heritage, together with an implied appreciation for it. The audible spectrum, provided with emotional and evocative power, has an important role in defining cultural heritage from the present to the future. Furthermore, it is particularly relevant in confinement situations as the one experienced in Europe in the year 2020.
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Simulation of Cryo-cooling to Improve Super Alloys Cutting Tools
Octavio Pereira,Adrián Rodríguez,Amaia Calleja-Ochoa,Ainhoa Celaya,Luis Norberto López de Lacalle,Asier Fernández-Valdivielso,Haizea González 한국정밀공학회 2022 International Journal of Precision Engineering and Vol.9 No.1
Improve machining processes from an environmental point of view is a hot topic currently. In this line, cryogenics CO 2 is presented as a solution to substitute conventional oil emulsions. However, to be applied industrially, it is needed to control CO 2 flow rate with the aim of reducing CO 2 consumption to reach what it is known as ECO 2 -performance (economy + ecology). Then, despite currently CO 2 cooling technique is used as external coolant, it is needed to improve its use—especially in milling processes—for achieving this goal. In line with this, in this paper is presented the use of CO 2 as tool internal coolant as a solution to optimize its use. For checking its suitability, a study based on computer fluid dynamics with a new cryogenic tool channels design and experimental tests were carried out for analyzing the differences between using CO 2 as internal and external coolant with the aim of improving the use of cryogenic gases during Inconel 718 milling processes. The results show that the use of CO 2 as internal coolant improves the current milling process not only from environmental point of view but also economic and technical, bringing CO 2 cryogenic technology closer to industrial milling conditions.
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Nozzle Design for Combined Use of MQL and Cryogenic Gas in Machining
Octavio Pereira,Adrián Rodríguez,Joaquín Barreiro,Ana Isabel Fernández-Abia,Luis Norberto López de Lacalle 한국정밀공학회 2017 International Journal of Precision Engineering and Vol.4 No.1
Nowadays, the need for not only technically but also environmentally efficient machining processes is increasing. In this context, the reduction of oil emulsion type coolants used during machining of aeronautical engine components supposes a great challenge. In this paper, a novel approach based on the design, optimization and validation of a nozzle adaptor combining cryogenic technology and minimum quantity lubrication systems is proposed. The proposed work also deals with the aim of obtaining a cost-effective process. Thus, CO2 flow and velocity was optimized in this line. Theoretically-based analysis were performed and compared with computational fluid dynamics (CFD) simulations and with real experimental tests as well. Once optimizing these key factors, two nozzle adaptors were designed and simulated by CFD. Different geometries were tested looking for the most efficient design. Finally, to obtain a feasible industrial product, the developed nozzle was tested as a CryoMQL demonstrator comparing with other lubri-coolant techniques during milling Inconel 718. Results show a successful balance between technical and environmental issues using this technology when milling aeronautical alloys.
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Accumulation of High Levels of ABA Regulates the Pleiotropic Response of the nhr1 Arabidopsis Mutant
Francisco Quiroz-Figueroa,Adrián Rodríguez-Acosta,Amed Salazar-Blas,Elizabeta Hernández-Domínguez,Maria Eugenia Campos,Nobutaka Kitahata,Tadao Asami,Rosa M. Galaz-Avalos,Gladys I. Cassab 한국식물학회 2010 Journal of Plant Biology Vol.53 No.1
Plants have evolved a variety of mechanisms for responding to environmental cues, which allows them to survive in the presence of limited resources or environmental stresses. One of the most significant growth adaptations plants have attained is tropism, a growth response that involves bending of plant organs toward or away from a stimulus. Roots exhibit hydrotropism in response to moisture gradients, which is thought to be critical in acquiring water and establishing their stand in the soil. However, the mechanism underlying hydrotropism remains unsolved. Here, we report that the no hydrotropic response (nhr1) mutant of Arabidopsis, which is impaired in hydrotropism, is tolerant to drought. The no hydrotropic response phenotype of nhr1 was repressed by AbamineSG,an inhibitor of abscisic acid (ABA) biosynthesis, indicating that ABA negatively regulates hydrotropism. Furthermore,the content of ABA was higher in nhr1 compared to those of wild type (wt). However, the higher ABA levels in nhr1plants were not due to higher transcript levels of 9-cisepoxycarotenoid dioxygenase (NCED3), since these were diminished compared to those of wt. Our results indicated that the root hydrotropic response of the nhr1 mutant is modulated by ABA and that the higher ABA levels of the mutant might confer it drought resistance.
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