• Title/Summary/Keyword: DeLong

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Mo,Cu-doped CeO2 as Anode Material of Solid Oxide Fuel Cells (SOFCs) using Syngas as Fuel

  • Diaz-Aburto, Isaac;Hidalgo, Jacqueline;Fuentes-Mendoza, Eliana;Gonzalez-Poggini, Sergio;Estay, Humberto;Colet-Lagrille, Melanie
    • Journal of Electrochemical Science and Technology
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    • v.12 no.2
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    • pp.246-256
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    • 2021
  • Mo,Cu-doped CeO2 (CMCuO) nanopowders were synthesized by the nitrate-fuel combustion method aiming to improve the electrical and electrochemical properties of its Mo-doped CeO2 (CMO) parent by the addition of copper. An electrical conductivity of ca. 1.22·10-2 S cm-1 was measured in air at 800℃ for CMCuO, which is nearly 10 times higher than that reported for CMO. This increase was associated with the inclusion of copper into the crystal lattice of ceria and the presence of Cu and Cu2O as secondary phases in the CMCuO structure, which also could explain the increase in the charge transfer activities of the CMCuO based anode for the hydrogen and carbon monoxide electro-oxidation processes compared to the CMO based anode. A maximum power density of ca. 120 mW cm-2 was measured using a CMCuO based anode in a solid oxide fuel cell (SOFC) with YSZ electrolyte and LSM-YSZ cathode operating at 800℃ with humidified syngas as fuel, which is comparable to the power output reported for other SOFCs with anodes containing copper. An increase in the area specific resistance of the SOFC was observed after ca. 10 hours of operation under cycling open circuit voltage and polarization conditions, which was attributed to the anode delamination caused by the reduction of the Cu2O secondary phase contained in its microstructure. Therefore, the addition of a more electroactive phase for hydrogen oxidation is suggested to confer long-term stability to the CMCuO based anode.

Use of radiotherapy in patients with palliative double bypass for locally advanced pancreatic adenocarcinoma

  • Glinka, Juan;Diaz, Federico;Alva, Augusto;Mazza, Oscar;Claria, Rodrigo Sanchez;Ardiles, Victoria;Santibanes, Eduardo de;Pekolj, Juan;Santibanes, Martin de
    • Radiation Oncology Journal
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    • v.36 no.3
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    • pp.210-217
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    • 2018
  • Purpose: Pancreatic cancer (PC) has not changed overall survival in recent years despite therapeutic efforts. Surgery with curative intent has shown the best long-term oncological results. However, 80%-85% of patients with these tumors are unresectable at the time of diagnosis. In those patients, first therapeutic attempts are minimally invasive or surgical procedures to alleviate symptoms. The addition of radiotherapy (RT) to standard chemotherapy, ergo chemoradiation, in patients with locally advanced pancreatic cancer (LAPC) is still controversial. The study aims to compare outcomes in patients with a double bypass surgery due to LAPC treated or not with RT. Materials and Methods: A retrospective cohort study of patients with double bypass for LAPC were registered and divided into two groups: treated or not with postoperative RT. Baseline characteristics, postoperative complications, those related to RT and their relation to the main event (mortality) were compared. Results: Seventy-four patients were included. Surgical complications between the groups did not offer significant differences. Complications related to RT were mostly mild, and 86% of patients completed the treatment. Overall survival at 1 and 2 years for patients in the exposed group was 64% and 35% vs. 50% and 28% in the non-exposed group, respectively (p = 0.11; power 72%; hazard ratio = 0.53; 95% confidence interval, 0.24-1.18). Conclusion: We observed a tendency for survival improvement in patients with postoperative RT. However, we've not had enough power to demonstrate this difference, possibly due to the small sample size. It is indispensable to develop randomized and prospective trials to guide more specific treatment lines in this patients.

Cloning and overexpression of lysozyme from Spodoptera litura in prokaryotic system

  • Kim, Jong-Wan;Park, Soon-Ik;Yoe, Jee-Hyun;Yoe, Sung-Moon
    • Animal cells and systems
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    • v.15 no.1
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    • pp.29-36
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    • 2011
  • Insect lysozymes are basic, cationic proteins synthesized in fat body and hemocytes in response to bacterial infections and depolymerize the bacterial cell wall. The c-type lysozyme of the insect Spodoptera litura (SLLyz) is a single polypeptide chain of 121 residues with four disulfide bridges and 17 rare codons and is approximately 15 kDa. The full-length SLLyz cDNA is 1039 bp long with a poly(A) tail, and contains an open reading frame of 426 bp long (including the termination codon), flanked by a 54 bp long 5' UTR and a 559 bp long 3' UTR. As a host for the production of high-level recombinant proteins, E. coli is used most commonly because of its low cost and short generation time. However, the soluble expression of heterologous proteins in E. coli is not trivial, especially for disulfide-bonded proteins. In order to prevent inclusion body formation, GST was selected as a fusion partner to enhance the solubility of recombinant protein, and fused to the amplified products encoding mature SLLyz. The expression vector pGEX-4T-1/rSLLyz was then transformed into E. coli BL21(DE3)pLysS for soluble expression of rSLLyz, and the soluble fusion protein was purified successfully. Inhibition zone assay demonstrated that rSLLyz showed antibacterial activity against B. megaterium. These results demonstrate that the GST fusion expression system in E. coli described in this study is efficient and inexpensive in producing a disulfide-bonded rSLLyz in soluble, active form, and suggest that the insect lysozyme is an interesting system for future structural and functional studies.

Clinical Experience for a Patient with Long QT Syndrome -A case report- (QT간격연장증후군(Long QT Syndrome) 환자의 치료경험 -증례 보고-)

  • Park, Tae-Kyu;Lee, Jung-Koo
    • The Korean Journal of Pain
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    • v.13 no.1
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    • pp.115-118
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    • 2000
  • Stellate ganglion block is most commonly used in pain clinic because it is an easy procedure and it has broad indications reported that Angina pectoris, tachyarrhythmia and long QT syndrome (LQTS) are indicated. LQTS is a disorder of the abnormalities of cardiac sympathetic innervation and of myocardial repolarization. LQTS is characterized by marked prolongation of the QT interval, often manifestating as syncope, seizures, or sudden death due to polymorphic ventricular tachyarrhythmia known as torsades de pointes. Treatment of symptomatic patients usually begin with beta blocker. The elective treatment of LQTS patients unresponsive to beta blocker is the left cardiac sympathetic denervation. We report a case of LQTS patient who had received stellate ganglion block.

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Prediction on the Stability of Spray-Dried Lactobacillus reuteri KUB-AC5 by Arrhenius Equation for Long-Term Storage

  • KORAKOCH HAMSUPO;SUKYAI PRAKIT;LOISEAU GERARD;NITISINPRASERT SUNEE;MONTET DIDIER;WANCHAITANAWONG PENKHAE
    • Journal of Microbiology and Biotechnology
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    • v.15 no.6
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    • pp.1178-1182
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    • 2005
  • Survival of thermotolerant Lactobacillus reuteri KUB-AC5 in $20\%$ (w/v) skim milk was found to be $11.3\%$ after spray drying by using a pilot scale spray dryer with inlet temperature at $170^{\circ}C$ and outlet temperature at $85^{\circ}C$. The ability of dried cell to produce antimicrobial activity was not affected by the spray drying. The model system for predicting viability of spray-dried L. reuteri KUB-AC5 during long-term storage was established, based on the Arrhenius equation, and verified by experimental data, because the viability of cells during storage can be correlated with storage temperature. The viability during storage at $30^{\circ}C$ declined more rapidly than that storage at $4^{\circ}C$.

The Expressive Effects of Queen Marie Antoinette's Costumes in the Movies

  • Kim, Ju-Ae;Trout, Barbara L.
    • Journal of the Korean Society of Clothing and Textiles
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    • v.34 no.12
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    • pp.2039-2050
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    • 2010
  • This study examines Queen Marie Antoinette's costumes in her portraits according to symbolic meanings and analyzes the expressive effects of Queen Marie Antoinette's costumes in the movies. The symbolic meanings through the costumes of Marie Antoinette expressed in the portraits shows the strong historical power of France in Europe along with the majestic appearance of the queen. A new perception of Marie Antoinette's taste can be found as she wore simple robe $\`{a}$ la l$\'{e}$vite in addition to extravagant costumes that demonstrated convention and position. The benevolent, extravagant, and splendid side of Marie Antoinette in history was emphasized; however, it also emphasized that she was a fashion leader with adventurous thinking and a liberal mind who accepted new things that transcend the era through this costume. The results of studying the expressive effects of Marie Antoinette's costumes as presented in the movies through the formative analysis of DeLong are as follows. The costumes expressed like this were observed through definer and the priority of observation, and it could be classified and analyzed in 4 expressive effects of excitement, calmness, strength, and delicacy; in addition, it induced the visual maximization according to the flow of the movie. After the study analyzed movies about the queen through four expressive effects, the costumes were shown as excitement, calmness, strength, and delicacy according to the flow of play.

Cashew Nut Oil: Extraction, Chromatographic and Rheological Characterisation.

  • Vincent Okechuwku ANIDIOBU;Chioma Oluchi ANIDIOBU
    • The Korean Journal of Food & Health Convergence
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    • v.9 no.4
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    • pp.11-18
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    • 2023
  • Oil was extracted from cashew nuts. The physicochemical parameters of the oil were determined. A chromatographic assay of the oil was carried out using Gas Chromatography-Mass Spectrometry. Seventeen compounds were detected: Phenol, Phenol 2-methyl-, Cyclohexene 4, 4-dimethyl-, m-Fluoro-2-diazoacetophenone 4-dimethyl-, Tetradecanoic acid, Phenol 4-octyl-, n-Hexadecanoic acid. Others are 9, 12-Octadecadienoic acid (Z, Z) - methyl ester, Hexadecanoic acid methyl ester, Methyl stearate, Dodecanoic acid methyl ester, 9, 12, 15-Octadecatrienoic acid methyl ester, 9, 12, 15-Octadecatrienoic acid (Z, Z, Z)-, Oleic acid, Octadecanoic acid, Tetracosanoic acid and 9-Octadecenoic acid methyl ester. Among the components are omega three and omega six essential free fatty acids. The rheological profiling and flow properties of cashew nut oil were determined using a Programmable Rheometer. Cashew nut oil exhibits slight dilatant behaviour at the low end of shear rate. The long chain and high molecular weight of its constituents controlled its rheology. Long-chained 9-Octadecenoic acid methyl ester, 9, 12-Octadecadienoic acid (Z, Z) - methyl ester, Tetracosanoic acid and methyl stearate, coupled with their high molecular weights are responsible for the shear thickening effect observed. Two models, Carreau-Yasuda and Ostwald-de Waele Power Law were employed to fit the rheological data. The Carreau-Yasuda model followed well the data.

Long Term Outcomes after Pediatric Liver Transplantation

  • Yazigi, Nada A.
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • v.16 no.4
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    • pp.207-218
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    • 2013
  • Long term outcomes after liver transplantation are major determinants of quality of life and of the value of this heroic treatment. As short term outcomes are excellent, our community is turning to take a harder look at long term outcomes. The purpose of this paper is to review these outcomes, and highlight proposed treatments, as well as pressing topics needing to be studied. A systemic review of the English literature was carried in PubMed, covering all papers addressing long term outcomes in pediatric liver transplant from 2000-2013. Late outcomes after pediatric liver transplant affect the liver graft in the form of chronic liver dysfunction. The causes include rejection particularly humoral rejection, but also de novo autoimmune hepatitis, and recurrent disease. The metabolic syndrome is a major factor in long term cardiovascular complication risk. Secondary infections, kidney dysfunction and malignancy remain a reality of those patients. There is growing evidence of late cognitive and executive function delays affecting daily life productivity as well as likely adherence. Finally, despite a good health status, quality of life measures are comparable to those of children with chronic diseases. Long term outcomes are the new frontier in pediatric liver transplantation. Much is needed to improve graft survival, but also to avoid systemic morbidities from long term immunosuppression. Quality of life is a new inclusive measure that will require interventions and innovative approaches respectful not only on the patients but also of their social circle.

Analysis of the variability of deflection of a prestressed composite bridge deck

  • Staquet, Stephanie;Detandt, Henri;Espion, Bernard
    • Steel and Composite Structures
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    • v.4 no.5
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    • pp.385-402
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    • 2004
  • Nearly 400 composite railway bridge decks of a new kind belonging to the trough type with U-shaped cross section have been constructed in Belgium over the last fifteen years. The construction of these bridge decks is rather complex with the preflexion of precambered steel girders, the prestressing of a concrete slab and the addition of a 2nd phase concrete. Until now, they have been designed with a classical computation method using a pseudo-elastic analysis with modular ratios. Globally, they perform according to the expectations but variability has been observed between the measured and the computed camber of these bridge decks just after the transfer of prestressing and also at long-term. A statistical analysis of the variability of the relative difference between the measured camber and the computed camber is made for a sample of 36 bridge decks using no less than 10 variables. The most significant variables to explain this variability at prestressing are the ratio between the maximum tensile stress reached in the steel girders during the preflexion and the yield strength and the type of steel girder. For the same sample, the long-term camber under permanent loading is computed by two methods and compared with measurements taken one or two years after the construction. The camber computed by the step-by-step method shows a better agreement with the measured camber than the camber computed by the classical method. The purpose of the paper is to report on the statistical analysis which was used to determine the most significant parameters to consider in the modeling in order to improve the prediction of the behaviour of these composite railway bridge decks.