온수배관을 이용한 온실의 난방성능

윤용철(Yong Cheol Yoon),신익수(Yik Soo Shin),김현태(Hyeon Tae Kim),배승범(Seoung Beom Bae),최진식(Jin Sik Choi),서원명(Won Myung Suh) (사)한국생물환경조절학회 2012 생물환경조절학회지 Vol.21 No.2

본 연구는 온실의 난방 에너지 절감을 목적으로 온실 내부에 알루미늄 온수배관을 설치하여 난방효과에 대한 기초자료를 구축하고자 수행되었다. 그 연구결과를 요약하면 다음과 같다. 전체 실험을 포함하여 온실내의 높이별 온도편차는 4.0~7.0℃ 정도의 범위로서 그 차이가 크게 나타났다. 팬코일유니트(FCU)를 작동시킨 경우가 작동시키지 않은 경우에 비해 유출입수의 온도차가 3.3℃ 정도 크고, 소비전력량은 36.2~40.1% 정도 증가하였으며, 시간당 방열량은 44.6~52.0% 정도 증가하는 것으로 나타났다. 실험기간동안 순환유량은 0.48~0.49L · s<SUP>?1</SUP> 정도의 범위에 있었고, 평균유속은 1.53~1.56m · s<SUP>?1</SUP> 정도였다. 유출입수의 평균 온도차는 6.24~11.50℃이었다. 최저 외기온 ?14.0~?0.6℃ 범위에서 설정온도별 방열량은 135,930~307,150㎉ 정도의 범위로서 시간당 9,610~19,630㎉ · h<SUP>?1</SUP> 정도의 범위에 있었다. 이것은 최대난방부하의 약 23~53% 정도의 난방에너지를 공급할 수 있을 것으로 나타났다. 전체 방열량과 소비전력량은 각각 2,548,306㎉ 및 3,075.7㎾h이다. 화석연료인 경유로 난방할 경우, 소요되는 경유의 총 소비량은 281.6L 정도이고 비용은 321,000won인 것으로 나타났다. 농가용 전력요금을 적용하면 전력사용에 대한 총비용은 110,730won 정도로서 경유 소비 비용의 33.5% 정도로 나타났다. 실험구의 온도가 대조구보다 약 8.3~14.6℃ 정도 높게 나타났다. This research was conducted to obtain basic data with regard to the heating performance that would be produced by installing an aluminum hot water pipe inside the greenhouse with the goal of reducing the heating energy in greenhouse. The research results are summarized as follows. The degree of difference in relation to the temperature by height within the greenhouse during the entire experiment was significant - within the range of 4.0~7.0℃. The temperature difference between incoming and outgoing water was about 3.3℃ greater when FCU was activated compared to when it was not activated. Meanwhile, the amount of energy consumed increased about 36.2~40.1%. The amount of pyrexia per hour also increased by 44.6~52.0%. During the experiment period, circulated flux was within the range of 0.48~0.49 L · s<SUP>?1</SUP> while average fluid speed was 1.53~1.56 m · s<SUP>?1</SUP>. The average temperature difference between incoming and outgoing water was 6.24~11.50℃. The amount of heating value by each set temperature within the minimum outdoor temperature range of ?14.0~?0.6℃ was 135,930~307,150 ㎉, and the range was within the 9,610~19,630 ㎉ · h<SUP>?1</SUP> per hour. This demonstrated that about 23~53% heating energy of the maximum heating load could be supplied. Total radiating value and amount of energy consumed were 2,548,306 ㎉ and 3,075.7 ㎾h, respectively. When heating takes place using oil, which is a fossil fuel, the total amount of light oil consumed was 281.6 L while the cost was 321,000 won. When the electricity cost for farms is applied, the total cost was about 110,730 won, which is about 33.5% of the cost required compared to oil consumption. The temperature at in the experiment area was about 8.3~14.6℃ higher compared to that of the control area.

UV-LEDs for the Disinfection and Bio-Sensing Applications

Won, Wan-Sik,Tran, Le Giang,Park, Woo-Tae,Kim, Kyoung-Kook,Shin, Choongsoo S.,Kim, Namkeun,Kim, Young-Jin,Yoon, Yong-Jin Springer-Verlag 2018 International Journal of Precision Engineering and Vol.19 No.12

Surveillance of chigger mites as a scrub typus vectorduring the epidemic season in 2014

Won Il Park,Jong Yul Roh,Seong Yun Kim,Bong Gu Song,Eun Hee Shin,Wook-Gyo Lee,Young Ran Ju,Kyu-Sik Chang,E-hyun Shin 한국응용곤충학회 2015 한국응용곤충학회 학술대회논문집 Vol.2015 No.10

A surveillance of chigger mites was performed to monitor the incidence of scrub typhus vectors at 4 environmental collection points of 6 locations from September to November 2014 in Korea. During the survey period, 420 chigger mites were collected and the dominant species was Leptotrombidium scutellare (42.6%). The first appearance of chigger mite was at 37th week (9.3.-9.10.) and the collected numbers of chigger mites was the highest at 43rd week (10.17.-10.23.). In Goryeong-gun, 299 chigger mites were collected, whereas 5 chigger mites were collected In Yesan-gun. The high environmental collecting rates were recorded at rice field (56%) and waterway (20%). The annually collected numbers (2012-2014) of chigger mites were compared with the average temperatures in August. This result suggests that the average temperature in August might be related with the annual incidence of scrub typhus vectors in Korea. However, the relationship between climate factors and the density of chigger mites needs to be studied by long-term periodical surveillance.

Homoegonol attenuates the asthmatic responses induced by ovalbumin challenge

Shin, In-Sik,Ahn, Kyung-Seop,Shin, Na-Rae,Jeon, Chan-Mi,Kwon, Ok-Kyoung,Chin, Young-Won,Lee, Kyeong,Oh, Sei-Ryang 대한약학회 2014 Archives of Pharmacal Research Vol.37 No.9

Homoegonol is a lignan derived from styraxlignolide A, which was isolated from Styrax japonica, a medicinal plant widely used for treatment of inflammatory diseases in Korea. We investigated the efficacy of homoegonol for the treatment of allergic asthma using an ovalbumin (OVA)-induced murine asthma model. The mice were sensitized through intraperitoneal injections of OVA on days 0 and 14. On days 21, 22 and 23 after the initial OVA sensitization, the mice were received OVA airway challenge. Homoegonol was administered by oral gavage at a dose of 30 mg/kg 1 h prior to the OVA challenge. The homoegonol-treated mice exhibited reduced inflammatory cell counts and Th2 cytokines in BALF, AHR, and IgE in the serum compared with the OVA-sensitized/challenged mice. The histological analysis of the lung tissue revealed that the administration of homoegonol attenuated the airway inflammation and the mucus overproduction in airway epithelial lesions induced by OVA through a reduction in expression of inducible nitric oxide synthase and matrix metalloproteinase-9. These findings indicate that homoegonol effectively suppresses the asthmatic responses induced by OVA challenge and suggests that homoegonol exhibits potential as therapeutic drug for allergic asthma.

Monomeric, trimeric, and tetrameric transition metal complexes (Mn, Fe, Co) containing <i>N</i>,<i>N</i>-bis(2-pyridylmethyl)-2-aminoethanol/-ate: preparation, crystal structure, molecular magnetism and oxidation catalysis

Shin, Jong Won,Rowthu, Sankara Rao,Hyun, Min Young,Song, Young Joo,Kim, Cheal,Kim, Bong Gon,Min, Kil Sik Royal Society of Chemistry 2011 Dalton transactions Vol.40 No.21

<P>The reaction of <I>N</I>,<I>N</I>–bis(2-pyridylmethyl)-2-aminoethanol (bpaeOH), NaSCN/NaN<SUB>3</SUB>, and metal (M) ions [M = Mn(<SMALL>II</SMALL>), Fe(<SMALL>II</SMALL>/<SMALL>III</SMALL>), Co(<SMALL>II</SMALL>)] in MeOH, leads to the isolation of a series of monomeric, trimeric, and tetrameric metal complexes, namely [Mn(bpaeOH)(NCS)<SUB>2</SUB>] (1), [Mn(bpaeO)(N<SUB>3</SUB>)<SUB>2</SUB>] (2), [Fe(bpaeOH)(NCS)<SUB>2</SUB>] (3), [Fe<SUB>4</SUB>(bpaeO)<SUB>2</SUB>(CH<SUB>3</SUB>O)<SUB>2</SUB>(N<SUB>3</SUB>)<SUB>8</SUB>] (4), [Co(bpaeOH)(NCS)<SUB>2</SUB>] (5), and [Co<SUB>3</SUB>(bpaeO)<SUB>2</SUB>(NO<SUB>3</SUB>)(N<SUB>3</SUB>)<SUB>4</SUB>](NO<SUB>3</SUB>) (6). These compounds have been investigated by single crystal X-ray diffractometry and magnetochemistry. In complex 1 the Mn(<SMALL>II</SMALL>) is bonded to one bpaeOH and two thiocyanate ions, while in complex 2 it is coordinated to a deprotonated bpaeO<SUP>−</SUP> and two azide ions. The oxidation states of manganese ions are 2+ for 1 and 3+ for 2, respectively, indicating that the different oxidation states depend on the type of binding anions. The structures of monomeric iron(<SMALL>II</SMALL>) and cobalt(<SMALL>II</SMALL>) complexes 3 and 5 with two thiocyanate ions are isomorphous to that of 1. Compounds 1, 2, 3, and 5 exhibit high-spin states in the temperature range 5 to 300 K. 4 contains two different iron(<SMALL>III</SMALL>) ions in an asymmetric unit, one is coordinated to a deprotonated bpaeO<SUP>−</SUP>, an azide ion, and a methoxy group, and the other is bonded to three azide ions and two oxygens from bpaeO<SUP>−</SUP> and a methoxy group. Two independent iron(<SMALL>III</SMALL>) ions in 4 form a tetranuclear complex by symmetry. 4 displays both ferromagnetic and antiferromagnetic couplings (<I>J</I> = 9.8 and −14.3 cm<SUP>−1</SUP>) between the iron(<SMALL>III</SMALL>) ions. 6 is a mixed-valence trinuclear cobalt complex, which is formulated as Co<SUP>III</SUP>(<I>S</I> = 0)–Co<SUP>II</SUP>(<I>S</I> = 3/2)–Co<SUP>III</SUP>(<I>S</I> = 0). The effective magnetic moment at room temperature corresponds to the high-spin cobalt(<SMALL>II</SMALL>) ion (∼4.27 <I>μ</I><SUB>B</SUB>). Interestingly, 6 showed efficient catalytic activities toward various olefins and alcohols with modest to excellent yields, and it has been proposed that a high-valent Co<SUP>V</SUP>–oxo species might be responsible for oxygen atom transfer in the olefin epoxidation and alcohol oxidation reactions.</P> <P>Graphic Abstract</P><P>Mn, Fe and Co complexes with interesting properties are reported. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c1dt10028a'> </P>

An Experimental Study for Inhalation of Halothane during High Frequency Jet Ventilation in a Lung Model

Won Oak Kim,Jin Ho Kim,Yang Sik Shin,Chung Hyun Cho Korean Society of Critical Care Medicine 1987 Acute and Critical Care Vol.2 No.1

High frequency ventilation techniques re accepted for upper airway and intrathoracic surgery under general anesthesia, Good oxygenation and ventilation are achieved with good airway control and operative conditions. However, the jet ventilating system is of an open character with mandatory use of intravenous anesthesia. The present study was done to administer inhalation anesthetics (halothane) during high frequency ventilation. The high frequency injector was adapted to an angiocatheter with a swivel connector, while the entrainment orifice of the side port was connected to the anesthesia circuit to facilitate the administration of inhalation anesthetics. Variables thought to be important in determing the inspiratory peak halothane concentration and diluting inspiratory oxygen concentration for estimation of gaseous influx from the anesthesia circuit were evaluated in an experimental lung model. Changing the halothane concentration of the vaporizer(1,3,5%), ispiratory: expiratory (I:E) ratio(0.2: 0.2, 0.2: 0.4, 0.2: 0.6, 0.2: 0.8, 0.2: 1.0 sec.). driving gas pressure(DGP) (10,30,50 psi), the inspiratory peak halothane and oxygen concentration were measured, The results were analyzed to predict the association and relationship of the inspiratory peak halothane and oxygen concentration with each variable. Partial coefficient of halothane concentration of the vaporizer, I:E ratio, DGP were 0.7224,0.3724,0.3386 and R squares were 0.5219,0.6605, 0.7752 to the inspiratory peak halo- thane concentration. Partial coefficient of I:E ratio, DGP were- 0. 9386, 0.1138 and R squares were 0.8809,0.8939 to the inspiratory oxygen concentration, Halothane concentration of the vaporizer was the most associated factor to the inspiratory peak halothane concentration and I:E ratio to the inspiratory oxygen concentration. Clinically, if DGP and I:E ratio are determined, the halothane concentration of the vaporizer will be the predictor of the inspiratory halothane concentration. But in a. certain condition, the inspiratory peak halothane concentration could at be achieved to a proper level for maintaining anesthesia by this experimental model, In conclusion, most of the high frequency jet systems used clinically are of the open character allowing entrainment of additional gases and difficult to apply if volitile agents are to be used. Special predictable vaporiiers have to be developed to apply volitile agents in any situation of I:E ratio and DGF by this method of administering inhalation agents during high frequency jet ventilation.

Mucinous Rectal Cancer: Effectiveness of Preoperative Chemoradiotherapy and Prognosis

Shin, Ui Sup,Yu, Chang Sik,Kim, Jong Hoon,Kim, Tae Won,Lim, Seok-Byoung,Yoon, Sang Nam,Yoon, Yong Sik,Kim, Chan Wook,Kim, Jin Cheon Springer - Society of Surgical Oncology 2011 Annals of surgical oncology Vol.18 No.8

Predicting Water Movement in the Soil Profile of Corn Fields with a Computer - Based STELLA Program to Simulate Soil Water Balance

Won-Il Kim(김원일),Goo-Bok Jung(정구복),Jong-Sik Lee(이종식),Jin-Ho Kim(김진호),Joung-Du Shin(신중두),Gun-Yeob Kim(김건엽),M.G. Huck 한국토양비료학회 2005 한국토양비료학회지 Vol.38 No.4

High quality graphene-semiconducting oxide heterostructure for inverted organic photovoltaics

Shin, Kyung-Sik,Jo, Hanggochnuri,Shin, Hyeon-Jin,Choi, Won Mook,Choi, Jae-Young,Kim, Sang-Woo The Royal Society of Chemistry 2012 Journal of materials chemistry Vol.22 No.26

<P>In this work, we demonstrate damage-free direct growth of high-quality semiconducting ZnO thin films on thermal chemical vapor deposition (CVD)-grown graphene transferred onto a plastic substrate. A mist pyrolysis CVD (MPCVD) method based on a non-vacuum process at a low growth temperature of 160 °C is introduced for the successful direct growth of ZnO on graphene without any additional treatments or processes. ZnO thin films that did not exhibit damage to the structural and electrical properties of graphene were successfully grown on graphene. The MPCVD-grown ZnO thin films revealed more uniform surface morphology and better structural property than ZnO thin films deposited using sol–gel and sputtering. Using the ZnO/graphene heterostructure, we fabricated bulk heterojunction inverted organic photovoltaics with a power conversion efficiency of 1.55%.</P> <P>Graphic Abstract</P><P>A high quality graphene-semiconducting oxide heterostructure for inverted organic photovoltaics was realized using mist pyrolysis chemical vapor deposition at a low growth temperature of 160 °C without any thermal, structural, and electrical damage to the graphene layer. In addition, we fabricated graphene cathode-based inverted organic solar cells that revealed an average power conversion efficiency of 1.55%. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c2jm00072e'> </P>

Poster Session 2 : Oral Presentation ; Molecular Cancer Biology : Extracellular domain of PTK7 inhibits the VEGF-induced migration, invasion, and tube formation of HUVECs

( Won Sik Shin ),( Jae Won Jung ),( Yong Sun Maeng ),( Joon Jung Jo ),( Jeong Ki Min ),( Young Guen Kwon ),( Seung Taek Lee ) 한국생화학분자생물학회 (구 한국생화학회) 2005 62회 KSBMB Annual Meeting in 2005 Vol.- No.-