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A New Rose Cultivar, 'Red Flash' with Red Color (적색 장미 신품종 '레드플래시' 육성)

  • Lee, Young Soon;Kim, Soon Jae;Lim, Jae Wook
    • Korean Journal of Breeding Science
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    • v.40 no.1
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    • pp.68-71
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    • 2008
  • A new rose cultivar, was selected from the progenies of a cross between 'Red Sandra' and 'Neon' by rose breeding team of the Gyeonggi-Do Agricultural Research and Extension Services in 2000. It was finally selected in 2004 after evaluation trials for three years (2002-2004). 'Red Flash' was developed for a standard-type cut flower. 'Red Flash' produces $123stems/m^2$ in a year, and has 36 petals per flower. The length of cut flower was long with 65.2 cm. Vase life of the cultivar could be as long as 7.6 days. The cultivar was applied for a variety protection in 2006, and was released to commercial growers in 2007.

Postulated release profile of recombinant human bone morphogenetic protein-2 (rhBMP-2) from demineralized dentin matrix

  • Um, In-Woong;Ku, Jeong-Kui;Lee, Bu Kyu;Yun, Pil-Young;Lee, Jeong Keun;Nam, Jeong-Hun
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.45 no.3
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    • pp.123-128
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    • 2019
  • Demineralized dentin matrix (DDM) has been used as a recombinant human bone morphogenetic protein-2 (rhBMP-2) carrier in many clinical trials. To optimize the clinical safety and efficacy of rhBMP-2 with DDM, efforts have been made to improve the delivery of rhBMP-2 by 1) lowering the administered dose, 2) localizing the protein, and 3) prolonging its retention time at the action site as well as the bone forming capacity of the carrier itself. The release profile of rhBMP-2 that is associated with endogenous BMP in dentin has been postulated according to the type of incorporation, which is attributed to the loosened interfibrillar space and nanoporous dentinal tubule pores. Physically adsorbed and modified, physically entrapped rhBMP-2 is sequentially released from the DDM surface during the early stage of implantation. As DDM degradation progresses, the loosened interfibrillar space and enlarged dentinal tubules release the entrapped rhBMP-2. Finally, the endogenous BMP in dentin is released with osteoclastic dentin resorption. According to the postulated release profile, DDM can therefore be used in a controlled manner as a sequential delivery scaffold for rhBMP-2, thus sustaining the rhBMP-2 concentration for a prolonged period due to localization. In addition, we attempted to determine how to lower the rhBMP-2 concentration to 0.2 mg/mL, which is lower than the approved 1.5 mg/mL.

Die Genehmigungsfiktion im deutschen VwVfG (독일 행정절차법상의 허가의제제도와 그 시사점)

  • Kim, Jung-Kwon
    • Journal of Legislation Research
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    • no.54
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    • pp.39-69
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    • 2018
  • In $j{\ddot{u}}ngster$ Zeit wird eine Fiktion im Verwaltungsrecht als essentielles Instrument $f{\ddot{u}}r$ Deregulierung sowie Verwaltungsvereinfachung mehr und mehr ins Feld $gef{\ddot{u}}hrt$ und ihre Erweiterung gefordert, weil sie in der Regel auf das Zeitsparen durch Verfahrenswegfall zielt. In Deutschland $erh{\ddot{o}}hte$ sich eine Bedeutung der Genehmigungsfiktion, indem sie durch 4.Novelle des VwVfG, die bei der Umsetzung der Richtlinie 2006/123/EG $ben{\ddot{o}}tigt$ wurde, als ein allgemeines verwaltungsrechtliches Rechtsinstitut eingeordnet wird. In Korea gibt es $vielf{\ddot{a}}ltige$ Fiktionsmethode, $w{\ddot{a}}hrend$ im deutschen Recht die Fiktion lediglich darin besteh, nach Ablauf der festgesetzten Frist die Entscheidung bzw. den Verwaltungsakt anzunehmen. Die systematische und logische Festsetzung der Fiktionslehre in Korea ist erforderlich. Deshalb wird eine allgemeine Regel zur Fiktion durch eine Kodifikation des allgemeinen Verwaltungsgesetzes, wie VwVfG, gefordert.

Development of Power Supply for Millimeter-wave Tracking Radars (밀리미터파 추적 레이더용 전원공급기 개발)

  • Lee, Dongju;Choi, Jinkyu;Joo, Ji-Han;Kwon, Jun-Beom;Byun, Young-Jin
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.21 no.4
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    • pp.123-127
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    • 2021
  • Millimeter-wave tracking radars should be operated in various environmental restrictions, thus they demand more computing power and smaller size compared to conventional tracking radars. This paper presents the design and implementation of the compact power supply for millimeter-wave tracking radar applications. To meet requirements of low voltage/high current and voltage accuracy for FPGA/DSP digital circuits, Point of Load (POL) converters are used in order to enhance power density and system efficiency. LDO (Low Dropout) is applied for the output voltage under the light load condition, then the single-input-multi-output power supply with max power of 375 W and 8 outputs is developed. The proposed power supply achieves output voltage accuracy of ±2 % and noise level of <50 mVpp % under full load conditions.

Determining the incidence and risk factors for short-term complications following distal biceps tendon repair

  • Goedderz, Cody;Plantz, Mark A.;Gerlach, Erik B.;Arpey, Nicholas C.;Swiatek, Peter R.;Cantrell, Colin K.;Terry, Michael A.;Tjong, Vehniah K.
    • Clinics in Shoulder and Elbow
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    • v.25 no.1
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    • pp.36-41
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    • 2022
  • Background: Distal biceps rupture is a relatively uncommon injury that can significantly affect quality of life. Early complications following biceps tendon repair are not well described in the literature. This study utilizes a national surgical database to determine the incidence of and predictors for short-term complications following distal biceps tendon repair. Methods: The American College of Surgeons' National Surgical Quality Improvement Program database was used to identify patients undergoing distal biceps repair between January 1, 2011, and December 31, 2017. Patient demographic variables of sex, age, body mass index, American Society of Anesthesiologists class, functional status, and several comorbidities were collected for each patient, along with 30-day postoperative complications. Binary logistic regression was used to calculate risk ratios for these complications using patient predictor variables. Results: Early postoperative surgical complications (0.5%)-which were mostly infections (0.4%)-and medical complications (0.3%) were rare. A readmission risk factor was diabetes (risk ratio [RR], 4.238; 95% confidence interval [CI], 1.180-15.218). Non-home discharge risk factors were smoking (RR, 3.006; 95% CI, 1.123-8.044) and ≥60 years of age (RR, 4.150; 95% CI, 1.611-10.686). Maleness was protective for medical complications (RR, 0.024; 95% CI, 0.005-0.126). Surgical complication risk factors were obese class II (RR, 4.120; 95% CI, 1.123-15.120), chronic obstructive pulmonary disease (COPD; RR, 21.981; 95% CI, 3.719-129.924), and inpatient surgery (RR, 8.606; 95% CI, 2.266-32.689). Conclusions: Complication rates after distal biceps repair are low. Various patient demographics, medical comorbidities, and surgical factors were all predictive of short-term complications.

Strength and toughness prediction of slurry infiltrated fibrous concrete using multilinear regression

  • Shelorkar, Ajay P.;Jadhao, Pradip D.
    • Advances in concrete construction
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    • v.13 no.2
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    • pp.123-132
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    • 2022
  • This paper aims to adapt Multilinear regression (MLR) to predict the strength and toughness of SIFCON containing various pozzolanic materials. Slurry Infiltrated Fibrous Concrete (SIFCON) is one of the most common terms used in concrete manufacturing, known for its benefits such as high ductility, toughness and high ultimate strength. Assessment of compressive strength (CS.), flexural strength (F.S.), splitting tensile strength (STS), dynamic elasticity modulus (DME) and impact energy (I.E.) using the experimental approach is too costly. It is time-consuming, and a slight error can lead to a repeat of the test and, to solve this, alternative methods are used to predict the strength and toughness properties of SIFCON. In the present study, the experimentally investigated SIFCON data about various mix proportions are used to predict the strength and toughness properties using regression analysis-multilinear regression (MLR) models. The input parameters used in regression models are cement, fibre, fly ash, Metakaolin, fine aggregate, blast furnace slag, bottom ash, water-cement ratio, and the strength and toughness properties of SIFCON at 28 days is the output parameter. The models are developed and validated using data obtained from the experimental investigation. The investigations were done on 36 SIFCON mixes, and specimens were cast and tested after 28 days of curing. The MLR model yields correlation between predicted and actual values of the compressive strength (C.S.), flexural strength, splitting tensile strength, dynamic modulus of elasticity and impact energy. R-squared values for the relationship between observed and predicted compressive strength are 0.9548, flexural strength 0.9058, split tensile strength 0.9047, dynamic modulus of elasticity 0.8611 for impact energy 0.8366. This examination shows that the MLR model can predict the strength and toughness properties of SIFCON.

MIMO Antenna Design and Beam Pattern Verification for W-band Autonomous Driving Radar (W대역 자율주행 레이다용 MIMO 안테나 설계 및 빔 패턴 검증 방법)

  • Changhyun Lee;Junhyeok Choi;Milim Lee;Shinmyong Park;Seungyeol Baek
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.23 no.5
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    • pp.123-129
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    • 2023
  • MIMO antenna is a field in which various researches have been actively conducted for a long time, and its design concept is universally well known. However, Unlike conventional MIMO antennas, MIMO antennas for autonomous driving radars, which have recently been attracting attention, are designed in W-band which is a millimeter wave band, and must also meet novel design conditions to satisfy the performance of autonomous driving radars. Therefore, a novel and different approach is required for the design and beam pattern verification of the MIMO antenna for autonomous driving radar. In this paper, a MIMO antenna is designed and the design process to satisfy the conditions of a W-band autonomous driving radar is introduced, and proposes a beam pattern verification method for a W-band MIMO antenna mounted on an autonomous driving radar system.

Prediction of BaP and Total PAH in Soil from Pyr Concentration using Regression Analysis (회귀분석을 통한 토양 내 Pyr 농도로부터 BaP와 총 PAH의 예측기법)

  • Lee, Woo-Bum;Kim, Jongo
    • Journal of Korean Society of Environmental Engineers
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    • v.39 no.3
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    • pp.118-123
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    • 2017
  • This study investigated the feasibility of a statistical approach for the prediction of BaP and total PAHs as pyrogenic sources. As results of regression, excellent linear and multiple correlations ($r^2$ > 0.94) were observed between BaP (or ${\Sigma}PAH$) and Pyr concentrations. When a developed prediction equation was applied to other investigations as validation and application studies, outstanding prediction results were obtained. The predictive model showed very good correlation between the measured and calculated ${\Sigma}PAH$. From this equation, Pyr was an apparently important hydrocarbon for the prediction of PAH. This model might provide a potentially useful tool for the calculation of average BaP and ${\Sigma}PAH$ in a certain region without additional tests.

Hydrophobic Characteristics of a Silicone Resin Surface Produced by Replicating an Electric Discharge Machined Surface (방전가공면을 복제한 실리콘수지 표면의 발수특성연구)

  • Kim, Y.H.;Hong, S.K.;Lee, S.Y.;Lee, S.H.;Kim, K.H.;Kang, J.J.
    • Transactions of Materials Processing
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    • v.22 no.1
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    • pp.23-29
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    • 2013
  • In this study, a micro/nano-random-pattern-structure surface was machined by electric discharge machining (EDM) followed by replicating the EDM surface with a silicone elastomer having low energy and greater hydrophobicity. The variation of hydrophobicity was of prime interest and was examined as a function of the surface roughness of the replicated silicone elastomer. The hydrophobicity was evaluated by the water contact angle (WCA) measured on the relevant surface. For the experiments, the original surfaces were machined by die sinking electric discharge machining (DS-EDM) and wire cutting electric discharge machining (WC-EDM). The ranges of surface roughness were Ra $0.8{\sim}19{\mu}m$ for the DS-EDM and Ra $0.5{\sim}4.7{\mu}m$ for the WC-EDM. In order to fabricate a hydrophobic surface, the EDM surfaces were directly replicated using a liquid-state silicone elastomer, which was thermally cured. The measured WCA on the replicated surfaces for DS-EDM was in the range of $115{\sim}130^{\circ}$ and for WC-EDM the WCA was in the range of $123{\sim}150^{\circ}$. Additionally, the dynamic hydrophobicity was evaluated by measuring an advancing and a receding WCA on the replicated silicone elastomer surfaces.

Effects of Diverse Water Pipe Materials on Bacterial Communities and Water Quality in the Annular Reactor

  • Jang, Hyun-Jung;Choi, Young-June;Ka, Jong-Ok
    • Journal of Microbiology and Biotechnology
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    • v.21 no.2
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    • pp.115-123
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    • 2011
  • To investigate the effects of pipe materials on biofilm accumulation and water quality, an annular reactor with the sample coupons of four pipe materials (steel, copper, stainless steel, and polyvinyl chloride) was operated under hydraulic conditions similar to a real plumbing system for 15 months. The bacterial concentrations were substantially increased in the steel and copper reactors with progression of corrosion, whereas those in stainless steel (STS) and polyvinyl chloride (PVC) reactors were affected mainly by water temperature. The heterotrophic plate count (HPC) of biofilms was about 100 times higher on steel pipe than other pipes throughout the experiment, with the STS pipe showing the lowest bacterial number at the end of the operation. Analysis of the 16S rDNA sequences of 176 cultivated isolates revealed that 66.5% was Proteobacteria and the others included unclassified bacteria, Actinobacteria, and Bacilli. Regardless of the pipe materials, Sphingomonas was the predominant species in all biofilms. PCR-DGGE analysis showed that steel pipe exhibited the highest bacterial diversity among the metallic pipes, and the DGGE profile of biofilm on PVC showed three additional bands not detected from the profiles of the metallic materials. Environmental scanning electron microscopy showed that corrosion level and biofilm accumulation were the least in the STS coupon. These results suggest that the STS pipe is the best material for plumbing systems in terms of the microbiological aspects of water quality.