http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Development of an Online Nuclear Materials Thermo-physical Property Database (THERPRO)
Seongdeuk Jo,Bilbao y Leon,김주성,김용수 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
Material properties data are an essential part of major disciplines in many engineering fields. Especially in the nuclear science and engineering, fundamental understanding of the thermo-physical-chemical-mechanical properties of nuclear materials is critical. In fact, accurate and reliable material properties data are required for the evaluation of the performance and safety of current and future nuclear reactors under normal operation or accident conditions. In this respect, the collection and systematization of openly available thermo-physical properties data as well as necessary new data measurements have been conducted within IAEA's Coordinated Research Project (CRP) on ``Establishment of a Thermo-physical Properties Database of LWRs and HWRs''. Based on the results of the CRP, an online web-based material properties data base, THERPRO, was developed and it is currently available to registered users in all IAEA Member States. THERPRO is managed by the IAEA designated Center for Nuclear Materials Database (CNMD), located at Hanyang University in Seoul, Korea and it is available through the IAEA public website at \underline http://therpro.iaea.org.
Miguel Sogbe,Idoia Bilbao,Francesco P. Marchese,Jon Zazpe,Annarosaria De Vito,Marta Pozuelo,Delia D’Avola,Mercedes Iñarrairaegui,Carmen Berasain,Maria Arechederra,Josepmaria Argemi,Bruno Sangro 대한간학회 2024 Clinical and Molecular Hepatology(대한간학회지) Vol.30 No.2
Background/Aims: New prognostic markers are needed to identify patients with hepatocellular carcinoma (HCC) who carry a worse prognosis. Ultra-low-pass whole-genome sequencing (ULP-WGS) (≤0.5× coverage) of cell-free DNA (cfDNA) has emerged as a low-cost promising tool to assess both circulating tumor DNA (ctDNA) fraction and large structural genomic alterations. Here, we studied the performance of ULP-WGS of plasma cfDNA to infer prognosis in patients with HCC. Methods: Plasma samples were obtained from patients with HCC prior to surgery, locoregional or systemic therapy, and were analyzed by ULP-WGS of cfDNA to an average genome-wide fold coverage of 0.3x. ctDNA and copy number alterations (CNA) were estimated using the software package ichorCNA. Results: Samples were obtained from 73 HCC patients at different BCLC stages (BCLC 0/A: n=37, 50.7%; BCLC B/C: n=36, 49.3%). ctDNA was detected in 18 out of 31 patients who received systemic treatment. Patients with detectable ctDNA showed significantly worse overall survival (median, 13.96 months vs not reached). ctDNA remained an independent predictor of prognosis after adjustment by clinical-pathologic features and type of systemic treatment (hazard ratio 7.69; 95%, CI 2.09–28.27). Among ctDNA-positive patients under systemic treatments, the loss of large genomic regions in 5q and 16q arms was associated with worse prognosis after multivariate analysis. Conclusions: ULP-WGS of cfDNA provides clinically relevant information about the tumor biology. The presence of ctDNA and the loss of 5q and 16q arms in ctDNA-positive patients are independent predictors of worse prognosis in patients with advanced HCC receiving systemic therapy.
WiSeMote: a novel high fidelity wireless sensor network for structural health monitoring
Hoover, Davis P.,Bilbao, Argenis,Rice, Jennifer A. Techno-Press 2012 Smart Structures and Systems, An International Jou Vol.10 No.3
Researchers have made significant progress in recent years towards realizing effective structural health monitoring (SHM) utilizing wireless smart sensor networks (WSSNs). These efforts have focused on improving the performance and robustness of such networks to achieve high quality data acquisition and distributed, in-network processing. One of the primary challenges still facing the use of smart sensors for long-term monitoring deployments is their limited power resources. Periodically accessing the sensor nodes to change batteries is not feasible or economical in many deployment cases. While energy harvesting techniques show promise for prolonging unattended network life, low power design and operation are still critically important. This research presents the WiSeMote: a new, fully integrated ultra-low power wireless smart sensor node and a flexible base station, both designed for long-term SHM deployments. The power consumption of the sensor nodes and base station has been minimized through careful hardware selection and the implementation of power-aware network software, without sacrificing flexibility and functionality.
WiSeMote: a novel high fidelity wireless sensor network for structural health monitoring
Davis P. Hoover,Jennifer A. Rice,Argenis Bilbao 국제구조공학회 2012 Smart Structures and Systems, An International Jou Vol.10 No.3
Researchers have made significant progress in recent years towards realizing effective structural health monitoring (SHM) utilizing wireless smart sensor networks (WSSNs). These efforts have focused on improving the performance and robustness of such networks to achieve high quality data acquisition and distributed, in-network processing. One of the primary challenges still facing the use of smart sensors for longterm monitoring deployments is their limited power resources. Periodically accessing the sensor nodes to change batteries is not feasible or economical in many deployment cases. While energy harvesting techniques show promise for prolonging unattended network life, low power design and operation are still critically important. This research presents the WiSeMote: a new, fully integrated ultra-low power wireless smart sensor node and a flexible base station, both designed for long-term SHM deployments. The power consumption of the sensor nodes and base station has been minimized through careful hardware selection and the implementation of power-aware network software, without sacrificing flexibility and functionality.
M. Cortazar,L. Santamaria,G. Lopez,J. Alvarez,M. Amutio,J. Bilbao,M. Olazar 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.99 No.-
The performance of Fe/olivine catalysts was tested in the continuous steam gasification of sawdust in abench scale plant provided with a fountain confined conical spouted bed reactor at 850 C. Olivine wasused as catalyst support and loaded with 5 wt%Fe. The activity and stability of the catalyst was monitoredby nitrogen adsorption-desorption, X-rayfluorescence spectroscopy, temperature programmedreduction, X-ray diffraction and X-ray photoelectron spectroscopy techniques, which were conductedbefore and after the runs. The fountain confined conical spouted bed performs well in the biomass steamgasification with primary catalysts. In fact, this reactor allows enhancing the gas-solid contact, andtherefore the catalytic activity by avoiding the elutriation offine catalyst particles. The uncatalysedefficiency of the gasification process, assessed based on the gas production and composition, H2production, tar concentration and composition, and carbon conversion efficiency, was considerabyimproved on the Fe/olivine catalyst, with tar reduction being especially remarkable (to 10.4 g Nm 3). After 140 min on stream, catalyst deactivation was particularly evident, as tar concentration increased to19.9 g Nm 3 (90% of that without catalyst). However, Fe/olivine catalyst was still active for WGS and CH4steam reforming reactions, with gas and H2 productions being 1.35 Nm3 kg 1 and 5.44 wt%, respectively. Metal iron oxidation to Fe3O4 caused catalyst deactivation, as the reaction environment shifted fromoxidizing to reducing conditions due to operational limitations.
Marta Díaz,Eva Epelde,Andrés T. Aguayo,Javier Bilbao 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.87 No.-
The capacity of HZSM-5 zeolite (SiO2/Al2O3 ratio = 30–280) based catalysts with a hierarchical porousstructure has been explored for the oligomerization of 1-butene at low pressure. Catalysts werecharacterized (structural, physical and acid properties) and tested in afixed bed reactor under thefollowing conditions: 1.5 bar; 175–325 C; space time, 0.5–10 gcatalyst h (molC) 1; butene partial pressure,0.375–1.5 bar; time on stream, 10 h. Results were evaluated with the aim of boosting naphtha (C5-C12=)fraction. A good compromise between conversion (62% in C units contained) and naphtha yield (42%) wasachieved by using a HZSM-5 zeolite with SiO2/Al2O3 = 30 at 275 C and 6 gcatalyst h (molC) 1, where 23%corresponds to C8-C12= and 19% to C5-C7=, respectively. Furthermore, the hierarchical porous structurefacilitated catalysts to tend to a pseudo-stationary deactivation state after 2–3 h time on stream, whichcould be interesting for process scale up.
Regenerability of a Ni catalyst in the catalytic steam reforming of biomass pyrolysis volatiles
Aitor Arregi,Gartzen Lopez,Maider Amutio,Itsaso Barbarias,Laura Santamaria,Javier Bilbao,Martin Olazar 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.68 No.-
A study has been carried out of the regenerability of a commercial Ni catalyst used in the steam reforming of the volatiles from biomass pyrolysis (gases and bio-oil), determining the evolution of the reaction indices (conversion, product yields and H2 production) in successive reaction–regeneration cycles. The causes of catalyst deactivation (coke deposition and Ni sintering) have been ascertained characterizing the deactivated and regenerated catalysts by TPO, TEM, TPR and XRD. Catalyst activity is not fully recovered by coke combustion in the first cycles due to the irreversible deactivation by Ni sintering, but the catalyst reaches a pseudo-stable state beyond the fourth cycle, reproducing its behaviour in subsequent cycles.
Reaction network of the chloromethane conversion into light olefins using a HZSM-5 zeolite catalyst
Monica Gamero,Beatriz Valle,Pedro Castaño,Andrés T. Aguayo,Javier Bilbao 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.61 No.-
The second step of chlorine-mediated methane valorization into hydrocarbons has been investigated using a HZSM-5 zeolite catalyst. A parametric study has enabled to set the reaction network, which is dominated by the dual cycle mechanism and secondary reactions of light olefins. This network explains the formation of methane, light olefins, C5+ aliphatics, paraffins, aromatics and coke. Under the optimal conditions, the light olefin selectivity is >70%, of which >40% corresponds to propylene. Coke is originated in the zeolite micropores and then grows within the matrix meso- and macropores.
Behavior of SAPO-11 as acid function in the direct synthesis of dimethyl ether from syngas and CO2
M. Sánchez-Contador,A. Ateka,A.T. Aguayo,J. Bilbao 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.63 No.-
The kinetic behavior for methanol dehydration of different SAPOs (-11 and -18) and HZSM-5 zeolites (with different acidity and various acidity modification treatments) has been studied under the suitable conditions for the direct synthesis of dimethyl ether (DME) from H2 + CO + CO2. SAPO-11 shows a good performance for methanol dehydration, with DME yield above 80% and negligible paraffin formation, and has been assessed as acid function of a bifunctional catalyst in the single-stage synthesis of DME (with CuO–ZnO–ZrO2 as metallic function, metallic/acid mass ratio = 1/2). The bifunctional catalyst (CZZr/S-11) shows a stable kinetic behavior with high selectivity to DME (over 80%).