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Description of new Alloxysta (Hymenoptera: Cynipoidea: Figitidae) species from India
Mar Ferrer-Suay,Jesús Selfa,María Victoria Seco-Fernández,Juli Pujade-Villar 한국응용곤충학회 2015 Journal of Asia-Pacific Entomology Vol.18 No.4
One new species has been discovered: Alloxysta nottoni Ferrer-Suay & Pujade-Villar sp. nov. This new species is here described and illustrated. An update of the Charipinae knowledge in India and a key of the Charipinae present in this country are also given.
An Intensity-Based Approach for Modeling Hedge Fung Equity
Marcos ESCOBAR,Tim FRIEDERICH,Mikhail KRAYZLER,Luis SECO,Rudi ZAGST 인하대학교 정석물류통상연구원 2009 인하대학교 정석물류통상연구원 학술대회 Vol.2009 No.10
This paper analyzes an intensity-based approach for modeling hedge fund(HF) equity. We use the Cox-Ingersoll-Ross(CIR) process to describe the intensity of the HF"s default process. The intensity is purposely linked to the assets of the HF and consequently is also used to explain the equity. We examine two different approaches to link assets and intensity and derive closed-form expressions for the firms" equity in both models. We use the Kalman filter to estimate the parameters of the unobservable intensity process. The applicability of the presented methods is demonstrated on real data working with historical series from Merrill Lynch.
An approach for screening single phase high-entropy alloys using an in-house thermodynamic database
Tapia, Antonio Joã,o Seco Ferreira,Yim, Dami,Kim, Hyoung Seop,Lee, Byeong-Joo Elsevier 2018 INTERMETALLICS Vol.101 No.-
<P><B>Abstract</B></P> <P>A new screening methodology is proposed to aid in the development of high-entropy alloys (HEAs). This approach takes into account three commonly used criteria and methods to guide the design of HEAs: empirical parameters, binary phase diagram inspection and the Calculation of Phase Diagrams (CALPHAD) method. In addition, two novel concepts are introduced: a criterion to evaluate the likeliness of single phase solid solution in an alloy system's non-equiatomic compositional space, and a binary priority list, which allows us to make the employed in-house thermodynamic database a more reliable tool for solid solution screening in a time-effective manner.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A novel and easy to replicate screening methodology was proposed in order to guide the design of high-entropy alloys (HEAs). </LI> <LI> A criterion to evaluate the likeliness of single phase solid solution in the non-equiatomic compositional space was proposed. </LI> <LI> A criterion to identify the most relevant weaknesses for solid solution screening in a thermodynamic database was proposed. </LI> <LI> Over one hundred thousand compositions of HEAs candidate systems were analyzed; promising new HEA systems were identified. </LI> <LI> Two novel HEAs (Co<SUB>10</SUB>Fe<SUB>10</SUB>Mn<SUB>35</SUB>Ni<SUB>35</SUB>Zn<SUB>10</SUB> and Co<SUB>10</SUB>Fe<SUB>10</SUB>Mn<SUB>30</SUB>Ni<SUB>30</SUB>Zn<SUB>20</SUB>) were fabricated. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Kim, Saewung,Sanchez, Dianne,Wang, Mark,Seco, Roger,Jeong, Daun,Hughes, Stacey,Barletta, Barbara,Blake, Donald R.,Jung, Jinsang,Kim, Deugsoo,Lee, Gangwoong,Lee, Meehye,Ahn, Joonyoung,Lee, Sang-Deok,Ch The Royal Society of Chemistry 2016 Faraday discussions Vol.189 No.-
<P>South Korea has recently achieved developed country status with the second largest megacity in the world, the Seoul Metropolitan Area (SMA). This study provides insights into future changes in air quality for rapidly emerging megacities in the East Asian region. We present total OH reactivity observations in the SMA conducted at an urban Seoul site (May-June, 2015) and a suburban forest site (Sep, 2015). The total OH reactivity in an urban site during the daytime was observed at similar levels (similar to 15 s(-1)) to those previously reported from other East Asian megacity studies. Trace gas observations indicate that OH reactivity is largely accounted for by NOX (similar to 50%) followed by volatile organic compounds (VOCs) (similar to 35%). Isoprene accounts for a substantial fraction of OH reactivity among the comprehensive VOC observational dataset (25-47%). In general, observed total OH reactivity can be accounted for by the observed trace gas dataset. However, observed total OH reactivity in the suburban forest area cannot be largely accounted for (similar to 70%) by the trace gas measurements. The importance of biogenic VOC (BVOCs) emissions and oxidations used to evaluate the impacts of East Asian megacity outflows for the regional air quality and climate contexts are highlighted in this study.</P>
The Controlling Factors of Photochemical Ozone Production in Seoul, South Korea
Kim, Saewung,Jeong, Daun,Sanchez, Dianne,Wang, Mark,Seco, Roger,Blake, Donald,Meinardi, Simone,Barletta, Barbara,Hughes, Stacey,Jung, Jinsang,Kim, Deugsoo,Lee, Gangwoong,Lee, Meehye,Ahn, Joonyoung,Lee Taiwan Association for Aerosol Research 2018 Aerosol and air quality research Vol.18 No.9
분말야금법으로 제조한 새로운 Co<sub>10</sub>Fe<sub>10</sub>Mn<sub>35</sub>Ni<sub>35</sub>Zn<sub>10</sub> 고엔트로피 합금
임다미,박형근,이병주,김형섭,Yim, Dami,Park, Hyung Keun,Tapia, Antonio Joao Seco Ferreira,Lee, Byeong-Joo,Kim, Hyoung Seop 한국분말야금학회 2018 한국분말재료학회지 (KPMI) Vol.25 No.3
In this paper, a new $Co_{10}Fe_{10}Mn_{35}Ni_{35}Zn_{10}$ high entropy alloy (HEA) is identified as a strong candidate for the single face-centered cubic (FCC) structure screened using the upgraded TCFE2000 thermodynamic CALPHAD database. The $Co_{10}Fe_{10}Mn_{35}Ni_{35}Zn_{10}$ HEA is fabricated using the mechanical (MA) procedure and pressure-less sintering method. The $Co_{10}Fe_{10}Mn_{35}Ni_{35}Zn_{10}$ HEA, which consists of elements with a large difference in melting point and atomic size, is successfully fabricated using powder metallurgy techniques. The MA behavior, microstructure, and mechanical properties of the $Co_{10}Fe_{10}Mn_{35}Ni_{35}Zn_{10}$ HEA are systematically studied to understand the MA behavior and develop advanced techniques for fabricating HEA products. After MA, a single FCC phase is found. After sintering at $900^{\circ}C$, the microstructure has an FCC single phase with an average grain size of $18{\mu}m$. Finally, the $Co_{10}Fe_{10}Mn_{35}Ni_{35}Zn_{10}$ HEA has a compressive yield strength of 302 MPa.
A review on anaerobic membrane bioreactors (AnMBRs) focused on modelling and control aspects
Robles, Á,ngel,Ruano, Maria Victoria,Charfi, Amine,Lesage, Geoffroy,Heran, Marc,Harmand, Jé,rô,me,Seco, Aurora,Steyer, Jean-Philippe,Batstone, Damien J.,Kim, Jeonghwan,Ferrer, Jos&eac Elsevier 2018 Bioresource technology Vol.270 No.-
<P><B>Abstract</B></P> <P>The use of anaerobic membrane bioreactor technology (AnMBR) is rapidly expanding. However, depending on the application, AnMBR design and operation is not fully mature, and needs further research to optimize process efficiency and enhance applicability. This paper reviews state-of-the-art of AnMBR focusing on modelling and control aspects. Quantitative environmental and economic evaluation has demonstrated substantial advantages in application of AnMBR to domestic wastewater treatment, but detailed modelling is less mature. While anaerobic process modelling is generally mature, more work is needed on integrated models which include coupling between membrane performance (including fouling) and the biological process. This should include microbial factors, which are important to generation of specific foulants such as soluble and particulate inert organics. Mature and well-established control tools, including better feedback control strategies are also required for both the process, and for fouling control.</P> <P><B>Highlights</B></P> <P> <UL> <LI> AnMBR needs further research to optimize process efficiency. </LI> <LI> Modelling can provide insight into the factors playing a key role in AnMBR. </LI> <LI> Process models still face a long path to adaptation in practice. </LI> <LI> Better understanding of fouling mechanisms in AnMBRs is required. </LI> <LI> Control strategies can be further optimized from mechanistic knowledge of fouling. </LI> </UL> </P>
Efficacy of phentolamine mesylate in reducing the duration of various local anesthetics
Gago-Garcia, Alejandro,Barrilero-Martin, Cayetana,Alobera-Gracia, Miguel Angel,del Canto-Pingarron, Mariano,Seco-Calvo, Jesus The Korean Dental Society of Anesthsiology 2021 Journal of Dental Anesthesia and Pain Medicine Vol.21 No.1
Background: To evaluate changes in the effectiveness of phentolamine mesylate in combination with different local anesthetics (LAs) and vasoconstrictors. A prospective randomized double-blind study was conducted with 90 patients divided into three groups, with each group being administered one of three different LAs: lidocaine 2% 1/80,000, articaine 4% 1/200,000, and bupivacaine 0.5% 1/200,000. Methods: We compared treatments administered to the mandible involving a LA blockade of the inferior alveolar nerve. Results were assessed by evaluating reduction in total duration of anesthesia, self-reported patient comfort using the visual analog pain scale, incidence rates of the most common adverse effects, overall patient satisfaction, and patient feedback. Results: The differences among the three groups were highly significant (P < 0.001); time under anesthesia was especially reduced for both the lip and tongue with bupivacaine. The following adverse effects were reported: pain at the site of the anesthetic injection (11.1%), headaches (6.7%), tachycardia (1.1%), and heavy bleeding after treatment (3.3%). The patients' feedback and satisfaction ratings were 100% and 98.9%, respectively. Conclusions: Efficient reversal of LAs is useful in dentistry as it allows patients to return to normal life more readily and avoid common self-injuries sometimes caused by anesthesia. Phentolamine mesylate reduced the duration of anesthesia in the three studied groups, with the highest reduction reported in the bupivacaine group (from 460 min to 230 min for the lip and 270 min for the tongue [P < 0.001]).