Removal of copper(II) in aqueous solution using pyrolytic biochars derived from red macroalga Porphyra tenera

박성훈,조혜정,류창국,박영권 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.36 No.-

Steam activation enhanced the copper removal performance of Porphyra tenera-derived biocharsignificantly by increasing the quantity of exchangeable cations, whereas KOH activation reduced thecopper removal performance of the biochar, despite the huge increase in specific surface area and porevolume, by washing out the exchangeable cations into the basic KOH solution. Both ion exchange andadsorption appeared to be important mechanisms for copper removal by P. tenera-derived biochar bution exchange may be a more important mechanism. The pseudo-2nd order kinetic model and theLangmuir’s isotherm model provided a good interpretation of the kinetics and equilibrium of copperremoval.

국내 백일해감염 실태조사: 2차 연구 중간보고

박성훈,황용일,장승훈,박용범,유광하,김휘정,이재명,박정웅,김창환,조재화,서기현,박재석,이명구,정의훈,이수걸,이선화,심애숙,유재연,강연호,정기석 대한결핵 및 호흡기학회 2011 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.112 No.0

Radiofrequency Ablation Treatment for Renal Cell Carcinoma: Early Clinical Experience

박성훈,윤성국,조진한,오종영,남경진,권희진,김수연,강명진,최순섭,성경택 대한영상의학회 2008 Korean Journal of Radiology Vol.9 No.4

Objective: To evaluate the early clinical experience associated with radiofrequency (RF) ablation in patients with renal cell carcinoma (RCC). Materials and Methods: The RF ablation treatment was performed on 17 tumors from 16 patients (mean age, 60.5 years; range, 43 73 years) with RCC. The treatment indications were localized, solid renal mass, comorbidities, high operation risk, and refusal to perform surgery. All tumors were treated by a percutaneous CT (n = 10), followed by an US-guided (n = 2), laparoscopy-assisted US (n = 2), and an open (n = 2) RF ablation. Furthermore, patients underwent a follow-up CT at one day, one week, one month, three and six months, and then every six months from the onset of treatment. We evaluated the technical success, technical effectiveness, ablation zone, benign periablation enhancement, irregular peripheral enhancement, and complications. Results: All 17 exophytic tumors (mean size, 2.2 cm; range, 1.1 5.0 cm) were completely ablated. Technical success and effectiveness was achieved in all cases and the mean follow-up period was 23.8 months (range, 17 33 months). local recurrence was not detected in any of the cases; however, five patients developed complications as a result of treatment, including hematuria (n = 2), mild thermal injury of the psoas muscle (n = 1), mild hydronephrosis (n = 1), and fistula formation (n = 1). Conclusion: The RF ablation is an alternative treatment for exophytic RCCs and represents a promising treatment for some patients with small RCCs. Objective: To evaluate the early clinical experience associated with radiofrequency (RF) ablation in patients with renal cell carcinoma (RCC). Materials and Methods: The RF ablation treatment was performed on 17 tumors from 16 patients (mean age, 60.5 years; range, 43 73 years) with RCC. The treatment indications were localized, solid renal mass, comorbidities, high operation risk, and refusal to perform surgery. All tumors were treated by a percutaneous CT (n = 10), followed by an US-guided (n = 2), laparoscopy-assisted US (n = 2), and an open (n = 2) RF ablation. Furthermore, patients underwent a follow-up CT at one day, one week, one month, three and six months, and then every six months from the onset of treatment. We evaluated the technical success, technical effectiveness, ablation zone, benign periablation enhancement, irregular peripheral enhancement, and complications. Results: All 17 exophytic tumors (mean size, 2.2 cm; range, 1.1 5.0 cm) were completely ablated. Technical success and effectiveness was achieved in all cases and the mean follow-up period was 23.8 months (range, 17 33 months). local recurrence was not detected in any of the cases; however, five patients developed complications as a result of treatment, including hematuria (n = 2), mild thermal injury of the psoas muscle (n = 1), mild hydronephrosis (n = 1), and fistula formation (n = 1). Conclusion: The RF ablation is an alternative treatment for exophytic RCCs and represents a promising treatment for some patients with small RCCs.

골반강에 발생한 유방형 근 섬유 모 세포종: 증례 보고

박성훈,이일기,김성훈,신지열 대한영상의학회 2009 대한영상의학회지 Vol.60 No.3

Mammary-type myofibroblastoma is very rare, benign mesenchymal neoplasm that’s composed of spindleshaped cells with features of myofibroblasts, and these cells are embedded in a stroma with hyalinization. The most common location of the tumor is the inguinal area and to the best of our our knowledge, there has been no such case that this type of tumor has presented as a pelvic space mass. We report here on a very rare form of mammary-type myofibroblastoma and we include the ultrasound and CT images. 유방형 근 섬유 모 세포종은 방추형세포들와 근섬유모세포들이 유리질화된 기질로 둘러싸인 매우 드문 양성 간질종양이다. 주로 서혜부에서 발견되며 저자들이 알기에 골반 강 내의 종괴의 형태로 발견된 경우는 없었다. 저자들은 매우 드문 형태의 유방형 근섬유 모 세포종을 경험하였기에 그 초음파와 전산화단층촬영소견을 보고하는 바이다.

Quorum Sensing Inhibitors from the Red Alga, Ahnfeltiopsis flabelliformis

박성훈,김연희,서영완,김정선 한국생물공학회 2007 Biotechnology and Bioprocess Engineering Vol.12 No.3

Three new acylhomoserine lactone (AHL) inhibitors have been isolated from the Korean red alga, Ahnfeltiopsis flabelliformis, via bioactivity-guided fractionation using the recombinant Agrobacterium tumefaciens liquid culture bioassay. Unlike the majority of AHL inhibitors reported to date, these compounds were α-D-galactopyranosyl-(1→2)-glycerol (floridoside) (1), bet-onicine (2), and isethionic acid (3), all of which are structurally unrelated to AHLs.

李漁의 曲律論 小考

박성훈 한국중국학회 2006 中國學報 Vol.54 No.-

Growth of SnO2 nanowires by thermal evaporation on Au-coated Si substrates

박성훈,홍찬석,Jungwoo Kang,Namhee Cho,이종무 한국물리학회 2009 Current Applied Physics Vol.9 No.3

Tin oxide (SnO2) nanowires have been grown on Au-coated Si substrates via a conventional thermal evaporation route using Sn powder. X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and photoluminescence (PL) spectroscopy analyses have been performed to investigate the structure and PL properties of the products. The as-synthesized nanostructures have been found to have monocrystalline tetragonal rutile structure. The diameters and the lengths of the SnO2 nanowires are in ranges of 50–550 nm and 200–500 lm, respectively. The PL spectrum of the as-grown SnO2 nanowires exhibited a broad emission band centered at around 595 nm and with a shoulder at around 555 nm in the yellow region. The growth mechanism of SnO2 nanowires by thermal evaporation have also been discussed.

Bilateral Delegation in Contests with Contingent-Fee Contracts

박성훈,이명훈 한국경제통상학회 2008 경제연구 Vol.26 No.3

The primary goal of this paper is to show that the variation in risk aversion plays a key role in the bilateral-delegation contests. We first characterize the comparative statics of the two-period game in which the delegates of risk-averse players work on a pure contingent fee. We show that the more risk-averse player offers the larger contingent fee, thus raising his delegate’s effort level. We also show that the more risk-averse player has a higher-than-50 percent chance of winning. We next consider the case where the players recognize the delegates' non-negative reservation wages. Assuming equal degree of risk-aversion for the players and identical magnitude of reservation wages for the delegates, it is shown that a higher degree of risk-aversion results in overcompensation to the delegates when the delegates' reservation wages are sufficiently low.

Public Good Conflict with Symmetric Reimbursement

박성훈 재단법인 경기연구원 2009 GRI 연구논총 Vol.11 No.1

For a key class of public goods, US federal regulations say that the loser should pay the winner’s legal fees in an environmental conflict. The fight is over the probability of winning prize that is a private good for a group of firms interested in development of the resource and a public good for a group of citizens interested in its preservation. We examine public-private environmental conflicts which involve a prize that is a private good for the firms but a public good for the citizen group. We explore the effort levels and efficiency consequences of the public-private environmental conflict. This paper shows that reimbursement rules cannot induce players to expend effort. Adding reimbursement into the public good contests reveals an interesting result—more effort level comes with greater social costs, but the symmetric rule fails to promote more public participation.

<<宋元?曲考>>의 ?曲槪念 小考

박성훈 중국문화연구학회 2007 중국문화연구 Vol.0 No.10