V2X 안테나 선택에 따른 차량간 통신 성능비교 연구

Angel Esteve Vargas,고재원(Jaewon Ko),서예준(Yejune Seo),강승택(Sungtek Kahng) 대한전기학회 2023 대한전기학회 학술대회 논문집 Vol.2023 No.7

Comparative Studies on the Relative Efficacy of DL-methionine and Liquid Methionine Hydroxy Analogue in Growing Pigs

B. Zimmermann,R. Mosenthin,M. Rademacher,P. B. Lynch,E. Esteve-Garcia 아세아·태평양축산학회 2005 Animal Bioscience Vol.18 No.7

A study consisting of 3 trials was designed to assess the relative biological efficacy of DL-methionine (DL-Met) in comparison to liquid methionine hydroxy analogue (MHA-FA) in growing pigs. In trial I a basal diet was supplemented with three graded levels of DL-methionine (0.25, 0.50 and 0.75 g/kg) or liquid MHA-FA (0.0285, 0.0570 and 0.0855 g/kg) on equimolar basis. The basal diet contained 18.3% CP, 0.22% Met and 0.51% Met+Cys, which is below the methionine requirement for weaned pigs between 10 and 20 kg BW according to NRC (1998) but adequate in all other essential nutrients and energy. Using an exponential model, the efficacy of the two methionine sources was estimated from nitrogen retention data obtained in 42 piglets with an initial BW between 11.0 kg (Exp. 1) and 11.7 kg (Exp. 2). In trials II and III, with a total of 192 and 96 pigs, and with an initial BW of 10.6 and 21 kg, respectively, growth response criteria were assessed to determine if in agreement with previous studies in pigs and poultry a biological effectiveness of about 65% on average could be confirmed for liquid MHA-FA in comparison to DL-met. Based on N-retention (trial I) the biological efficacy of liquid MHA-FA on a weight-to-weight basis was calculated to be 62% relative to DL-met. Basically, these results were confirmed using growth response criteria as measures; the results of trial II and III revealed no significant differences in growth performance and feed conversion between treatments indicating that 100 parts of liquid MHA-FA can be replaced by 65 parts of DL-met.

Influence of Maternal Diabetes on the Risk of Neurodevelopmental Disorders in Offspring in the Prenatal and Postnatal Periods

Verónica Perea,Xavier Urquizu,Maite Valverde,Marina Macias,Anna Carmona,Esther Esteve,Gemma Escribano,Nuria Pons,Oriol Giménez,Teresa Gironés,Andreu Simó-Servat,Andrea Domenech,Núria Alonso-Carril,Car 대한당뇨병학회 2022 Diabetes and Metabolism Journal Vol.46 No.6

Background: This study aimed to evaluate the influence of maternal diabetes in the risk of neurodevelopmental disorders in offspring in the prenatal and postnatal periods.Methods: This cohort study included singleton gestational diabetes mellitus (GDM) pregnancies >22 weeks’ gestation with live newborns between 1991 and 2008. The control group was randomly selected and matched (1:2) for maternal age, weeks of gestation and birth year. Cox regression models estimated the effect of GDM on the risk of attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder (ASD), and maternal type 2 diabetes mellitus (T2DM). Moreover, interaction between maternal T2DM and GDM-ADHD relationship was evaluated.Results: Children (<i>n</i>=3,123) were included (1,073 GDM; 2,050 control group). The median follow-up was 18.2 years (interquartile range, 14.2 to 22.3) (<i>n</i>=323 with ADHD, <i>n</i>=36 with ASD, and <i>n</i>=275 from women who developed T2DM). GDM exposure was associated with ADHD (hazard ratio [HR]_crude, 1.67; 95% confidence interval [CI], 1.33 to 2.07) (HR_adjusted, 1.64; 95% CI, 1.31 to 2.05). This association remained significant regardless of the treatment (diet or insulin) and diagnosis after 26 weeks of gestation. Children of mothers who developed T2DM presented higher rates of ADHD (14.2 vs. 10%, <i>P</i>=0.029). However, no interaction was found when T2DM was included in the GDM and ADHD models (<i>P</i>>0.05). GDM was not associated with an increased risk of ASD (HR_adjusted, 1.46; 95% CI, 0.74 to 2.84).Conclusion: Prenatal exposure to GDM increases the risk of ADHD in offspring, regardless of GDM treatment complexity. However, postnatal exposure to maternal T2DM was not related to the development of ADHD.

Experimental and numerical study on the detection of fatigue failure in hydraulic turbines

Xavier Sánchez-Botello,Adolfo de la Torre,Rafel Roig,Esteve Jou,Oscar de la Torre,Javier Ayneto,Xavier Escaler 대한기계학회 2023 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.37 No.10

Detecting fatigue cracks in hydraulic turbine runners is costly, as it requires stopping the unit, emptying it of water and accessing the runner for inspection. Thus, an alternative way based on monitoring the changes of the structural modal response induced by the formation and growth of a crack was investigated. To do so, the crack propagation induced by a resonance was numerically predicted and experimentally machined on a disk-like structure that resembles a Kaplan turbine runner. The analysis of the results shows how the different stages of the fatigue crack growth can be monitored based on the change of the natural frequencies and mode shapes of several specific modes. Based on the obtained results, a structural health monitoring system is being designed to monitor the turbine runner modes of vibration without the need to stop and inspect the unit.

Improving Morphological Quality and Uniformity of Hydrothermally Grown ZnO Nanowires by Surface Activation of Catalyst Layer

Murillo, Gonzalo,Lozano, Helena,Cases-Utrera, Joana,Lee, Minbaek,Esteve, Jaume Springer US 2017 NANOSCALE RESEARCH LETTERS Vol.12 No.1

<P>This paper presents a study about the dependence of the hydrothermal growth of ZnO nanowires (NWs) with the passivation level of the active surface of the Au catalyst layer. The hydrothermal method has many potential applications because of its low processing temperature, feasibility, and low cost. However, when a gold thin film is utilized as the seed material, the grown NWs often lack morphological homogeneity; their distribution is not uniform and the reproducibility of the growth is low. We hypothesize that the state or condition of the active surface of the Au catalyst layer has a critical effect on the uniformity of the NWs. Inspired by traditional electrochemistry experiments, in which Au electrodes are typically activated before the measurements, we demonstrate that such activation is a simple way to effectively assist and enhance NW growth. In addition, several cleaning processes are examined to find one that yields NWs with optimal quality, density, and vertical alignment. We find cyclic voltammetry measurements to be a reliable indicator of the seed-layer quality for subsequent NW growth. Therefore, we propose the use of this technique as a standard procedure prior to the hydrothermal synthesis of ZnO NWs to control the growth reproducibility and to allow high-yield wafer-level processing.</P><P><B>Electronic supplementary material</B></P><P>The online version of this article (doi:10.1186/s11671-017-1838-x) contains supplementary material, which is available to authorized users.</P>

Metabolic, cardiorespiratory, and neuromuscular fitness performance in children with cerebral palsy : A comparison with healthy youth

Claudia Cardona García,Alberto Alcocer-Gamboa,Margarita Pérez Ruiz,Ignacio Martínez Caballero,Avery D. Faigenbaum,Jonathan Esteve-Lanao,Beatriz Moral Saiz,Teresa Martín Lorenzo,Sergio Lerma Lara 한국운동재활학회 2016 JER Vol.12 No.2

Properties of a-C:H films deposited from a methane electron cyclotron wave resonant plasma

N.A.Morrison,C.William,B.Racine,W.I.Milne,E.Martinez,J.Esteve,J.L.Andujar 한국물리학회 2003 Current Applied Physics Vol.3 No.5

An electron cyclotron wave resonant methane plasma discharge was used for the high rate deposition of hydrogenated amorphous carbon (a-C:H). Deposition rates of up to 400 AA/min were obtained over substrates up to 2.5 in. in diameter with a film thickness uniformity of 10%. The deposited films were characterised in terms of their mass density, sp3 and hydrogen contents, C–H bonding, intrinsic stress, scratch resistance and friction properties. The deposited films possessed an average sp3 content, mass density and refractive index of 58%, 1.76 g/cm3 and 2.035 respectively. Mechanical characterisation indicated that the films possessed very low steady-state coefficients of friction (ca. 0.06) and a moderate shear strength of 141 MPa. Nano-indentation measurements also indicated a hardness and elastic modulus of 16.1 and 160 GPa respectively. The critical loads required to induce coating failure were also observed to increase with ion energy as a consequence of the increase in degree of ion mixing at the interface. Furthermore, coating failure under scratch test conditions was observed to take place via fracture within the silicon substrate itself, rather than either in the coating or at the film/substrate interface. 2003 Elsevier B.V. All rights reserved.

TouchCloud: Enabling People to Augment Real-world Objects With Cloud-stored Data

Augusto Esteves,Filipe Quintal,Ian Oakley 한국HCI학회 2014 한국HCI학회 학술대회 Vol.2014 No.2

Muxama and other traditional food products obtained from tuna in south Portugal and Spain: review and future perspectives

Eduardo Esteves,Jaime Aníbal 한국식품연구원 2019 Journal of Ethnic Foods Vol.6 No.-

There is evidence that consumers perceive fish as healthy (Carlucci D et.al, Appetite 84:212–27,2015; Vanhonacker F et.al, Br Food J 115:508–25,2013; Verbeke W et.al, Public Health Nutr 8:422–9,2005.). Historically, the development of (traditional) processing techniques allowed for the preservation of excess quantities of fresh fish for storage or transport. Those technologies are not well documented and are being lost with the trend to urbanization and consumption of convenience, ready-to-eat food. In the so-called developed world, there is still a considerable demand for traditionally processed (sea)food products, wherein the raw material and the final product are of high value. Muxama or mojama is a traditional, highly valued food product prepared from dry-cured tuna loins that is a delicatessen in the southern Iberian Peninsula: Algarve (Portugal) and Andalucía, Murcia, Alicante, and Valencia (Spain). The tuna (mostly Thunnus obesus and T. albacares) loins are salted and dried following a typically artisanal process that incorporates empirical knowledge passed down numerous generations since at least the tenth century Common Era (Aníbal J and Esteves E, Muxama and estupeta: traditional food products obtained from tuna loins in South Portugal and Spain, Traditional food products 2016, Lindkvist KB et.al, Can Geogr-Géogr Can 52:105–20,2008, Gallart-Jornet L et.al, La salazón de pescado, una tradición en la dieta mediterránea [The salting of fish, a tradition in the Mediterranean diet] 2005.). The production process changed little over the years but is different among locations, even supporting distinct certifications. The stability of muxama derives from the reduced water activity. Furthermore, the drying method has secondary effects on flavor, color, and nutritional value of the product. In southern Portugal and Spain, muxama is the prime food product obtained from tuna at the end of the traditional quartering of tunas, named ronqueamento in Portugal or ronqueo in Spain. Other food products obtained from tuna include Estupeta, Mormos, Rabinhos, Faceiras and Orelhas, Ventresca, Tarantela and Sangacho, Espinheta, Tripa, Bucho, and Ovas. These products result from employing different manufacturing procedures and processes. In this paper, we tentatively describe the main features of the processing stages and traditional food products obtained from tuna produced in the southern Iberian Peninsula (Portugal and Spain) and discuss the interactions of knowledge systems and transmission of traditional knowledge regarding its production.

Carbon nanotubes as catalyst support in chemical vapor deposition reaction: A review

Laura M. Esteves,Hugo A. Oliveira,Fabio B. Passos 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.65 No.-

Due to their excellent chemical and physical properties, carbon nanotubes (CNT) have wide-range potential applications. In heterogeneous catalysis, carbon materials as catalyst supports have been attracting a growing interest. Carbon supported catalysts can be used in many reactions but the use of carbon nanotube supported catalysts in chemical vapor deposition reaction for CNT growth is still not well understood in literature. This review intends to systematize the data published in the literature on this topic in order to understand the parameters governing the catalytic consequences of carbon nanotube used as support in chemical vapor deposition reaction.