• 한국염색가공학회지
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• 제15권3호
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• pp.161-167
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• 2003

The preparations of deodorizing fibers using $TiO_2$ have been investigated. The fibers were coated with $TiO_2$ for the purpose of deodorizing by dipping fibers into the $TiO_2$ sol solutions and calcined at $450^\circ{C}$, $500^\circ{C}$ and $750^\circ{C}$ for 1 h after coating. The surface structure of the coated fibers was studied with XRD on the different preparation conditions of calcination temperatures. The deodorizing function of the prepared fibers was studied by the determination of the decomposing capability for $NH_3,\;CH_3SH\;and\;CH_3CHO$. The deodorant activity(D.A.) of these deodoriBing fibers was measured by chromogenic gas detector tubes. The deodorizing effect of the prepared fibers were shown to be similar for the three model compounds; 5wt% $TiO_2$ sol solution calcined at $450^\circ{C}$ < 5 wt% $TiO_2$ sol solution calcined at $500^\circ{C}$< 5 wt% TiO$_2$ sol solution calcined at $750^\circ{C}$.

• Fisheries and Aquatic Sciences
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• 제26권7호
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• pp.455-459
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• 2023

40 species of the family Caprellidae Leach, 1814 are recorded in Korean waters. Caprella aino Utinomi, 1943 was newly collected from seaweed farms from the southeastern waters of Korea. C. aino was firstly reported in Japanese waters in 1943. Adults of C. aino and Caprella mutica Schurin, 1935 are easily distinguished in that C. aino have pereonite II and gnathopod II without setae and two small tubercles of articulation of gills in pereonite III-IV, while C. mutica do pereonite II and gnathopod II covered with setae and those of pereonites III-VII with many tubercles. However, subadult C. mutica is hardly distinguishable from C. aino in that tubercles of pereonite III are less developed and they have inconspicuous setae of pereonite II and gnathopod II. Nevertheless, C. aino is distinguished from subadult C. mutica because adult C. aino have dorsal tubercles on pereonite IV, V, VI, VII unlike that of C. mutica. We report C. aino as a new record in Korean water with comparison of C. mutica.

• 한국농림기상학회지
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• 제17권3호
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• pp.254-260
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• 2015

본 연구는 미래 기후변화 시나리오에 근거한 5가지 온도처리가 '춘광' 배추의 생육, 품질 및 생리반응에 미치는 영향을 구명하기 위해 수행하였다. 처리구는 $-2.0^{\circ}C$(I), 평년온도(II), $+2.0^{\circ}C$(III), $+4.0^{\circ}C$(IV), $+6.0^{\circ}C$(V) 등 5 수준으로 설정하였다. 생체중, 엽수 및 엽면적의 경시적 변화를 조사한 결과, 결구 이전에는 고온처리구인 IV, V처리구가 높은 수치를 보였으나, 결구기 이후 현저히 감소하여 정식 후 70일에는 고온처리구일수록 감소하는 경향을 보였다. 배추 내부의 무름 증상은 V처리구가 85.7%로 가장 높았으며, IV (64.3%), III (28.6%), II (14.3%), I (7.1%)순으로 감소하였다. 광합성률을 측정한 결과, 정식 후 30일전에는 III, IV, V처리구의 광합성률이 높은 수치를 보였으나, 생육후반에는 크게 감소한 반면, I, II처리구는 크게 증산량과 기공전도도 역시 비슷한 경향을 보였다. 정식 후 50일의 엽록소 형광반응을 비교한 결과, Fv/Fm은 I처리구가 8.04로 처리구 중 가장 높았으며 IV처리구가 7.15로 가장 낮았다.

• 환경위생공학
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• 제22권4호
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• pp.65-76
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• 2007

The possibility of rapid quantitative analysis of AV(Acid Value), IV(Iodine Value) and fatty acids in vegetable oils with NIRS(Near-infrared spectroscopy) was evaluated. A calibration equation calculated by MPLS regression technique was developed and correlation coefficient of determination for AV, IV, $C_{16:0},\;C_{18:0},\;C_{18:1},\;C_{18:2},\;C_{18:3},\;and\;C_{20:0}$ content were 0.9727, 0.997, 0.9805, 0.942, 0.9987, 0.9994, 0.9966, and 0.975 respectively. According to the data obtained from validation study, $R^2$ of contents of perilla, corn, soybean, rapaseed oils were 0.897, 0.993, 0.935, 0.707, 0.994, 0.996, 0.984, 0.798, SEP of contents of 0.185, 1.367, 0.899, 0.640, 1.498, 1.360, 0.476, 0.076 by MPLS. The results indicate that the NIRS procedure can potentially be used as a non-destructive analysis method for the rapid and simple measurement of AV, IV and fatty acids in vegetable oils.

• 한국작물학회지
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• 제59권4호
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• pp.435-444
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• 2014

본 연구는 옥수수수염에 함유된 flavonoid 계열의 물질인 maysin, luteolin 7-O-neohesperidoside, luteolin 3'-methyl ether 7-glucuronosyl-($1{\rightarrow}2$)-glucuronide 및 polyphenol성 물질인 chlorogenic acid을 추출 및 분리하는 방법에 관한 것으로, 얻어진 결과를 요약하면 다음과 같다. 1. 수정되지 않은 옥수수수염의 메이신 함량은 출사 후 3일에 함량이 최대치에 도달하고, 그 후 감소되는 것으로 나타났으며, 방임수분된 옥수수수염의 메이신 함량은 출사후 지속적으로 감소되는 것으로 나타나 화분의 수분 여부에 따라 메이신 함량에 많은 차이가 있음을 알 수 있었다. 2. 채취한 옥수수수염에 에탄올을 가하여 9일간 상온에서 추출 후 엽록소, 지질 및 당질 등을 제거시키고, $C_{18}$ column chromatography를 수행하여 분취물 I, II, III, IV를 얻었다. 3. 분취물의 흡광도를 분석한 결과 분취물 I은 327 nm 및 239 nm에서 최대 흡수 파장(${\lambda}_{max}$)을 나타내었고, 분취물 II는 339 nm 및 274 nm, 분취물 III는 345 nm 및 277 nm, 분취물 IV는 352 nm, 270 nm, 및 257 nm 에서 최대 흡수파장을 나타내었다. 4. 분취물 I은 m/z $355[M+H]^+$인 chlorogenic acid(3-(3,4-dihydroxycinnamoyl)quinic acid, $C_{16}H_{18}O_9$)이었으며, 분취물 II는 chlorogenic acid와 m/z $653[M+H]^+$인 luteolin 3'-methyl ether 7-glucuronosyl-($1{\rightarrow}2$)-glucuronide ($C_{28}H_{28}O_{18}$)를 함유한 혼합물, 분취물 III는 chlorogenic acid와 m/z $595[M+H]^+$인 luteolin 7-O-neohesperidoside ($C_{27}H_{30}O_{15}$) 및 luteolin 3'-methyl ether 7-glucuronosyl-($1{\rightarrow}2$)-glucuronide를 함유한 혼합물이었고, 분취물 IV는 m/z $577[M+H]^+$인 maysin ($C_{27}H_{28}O_{14}$, 2"-O-${\alpha}$-L-rhamnosyl-6-C-(6-deoxy-xylo-hexose-4-ulosyl)luteolin 임을 각각 확인 하였다. 5. 옥수수수염의 알코올 추출물로부터 분리된 분취물 I은 옥수수수염 생체 100 g 당 (수분함량 약 92%) 35 mg/100 g, 분취물 II는 48 mg/100 g, 분취물 III는 46 mg/100 g, 분취물 IV는 138 mg/100 g을 얻을 수 있었다.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2009년도 춘계학술대회 논문집
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• pp.644-647
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• 2009

In this paper, the study is researched for related safety standards having experiments concerning temperature changes in type IV cylinder of the Hydrogen fuel cell vehicle. Experiments were performed to acquire temperature data of type IV cylinder according to filling time. The experimental results are shown that internal temperatures of type Ⅳ vessel are over $85^{\circ}C$ at all measured points after 5 minutes at filling 35 MPa and the highest temperature is getting lower when the residual gases are more remained. Consequently, the safety standards need properly limited value through further study for filling flow rate and filling time.

• 한국표면공학회지
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• 제32권4호
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• pp.538-546
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• 1999

Ti(IV)-Fe(III) oxide films were formed by MOCVD technique, and their photoelectrochemical properties were examined in 0.5M N $a_2$$SO_4$ solution by a photoelectrochemical polarization test. Ti(IV)-Fe(III) oxide films deposited at 40$0^{\circ}C$ by MOCVD have crystalline structure and are all n-type semiconductors. The photocurrent and the quantum efficiency of the films increase with increasing the iron cationic fraction ($X_{Fe}$ ) in the films. The energy band gap of the films increase linearly with increasing the iron cationic fraction in the films. Ti(IV)-Fe(III) oxide film of $X_{Fe}$ /=0.60 has high photocurrent response and corrosion resistance simultaneously.

• 자원리싸이클링
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• 제30권6호
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• pp.36-42
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• 2021

폐리튬이온배터리에 함유된 유가금속을 회수하기 위해 고온에서 용융환원처리한다. 용융환원된 금속상을 염산용액으로 침출한 다음 용매추출과 침전으로 유가금속을 분리한 여과액에는 니켈(II)과 미량의 규소(IV)가 함유되어 있다. 여액으로부터 고순도 니켈화합물을 회수하기 위해 흡착법에 의한 규소(IV)의 분리와 니켈(II)의 선택적 침전에 대해 조사했다. Polyacrylamide는 규소(IV)를 선택적으로 흡착했으나 용액의 점도 역시 증가하여 여과가 어렵다. 침전제로 탄산나트륨을 첨가하면 니켈(II)과 미량의 규소(IV)가 공침되었다. 반면 옥살산나트륨은 상온에서 니켈(II)만을 선택적으로 침전시켜 순도 99.99% 이상의 니켈옥살산염 결정상을 회수할 수 있었다.

• 대한임상전기생리학회지
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• 제6권1호
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• pp.17-30
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• 2008

This study was investigated the effects of pain and functional recovery when low frequency electrical stimulation and aquatic exercise applied to sciatic nerve injured rats. The rats were assigned into four groups; Group I(n=20, control group), Group II(n=20, low frequency electrical stimulation group), Group III(n=20, aquatic exercise group), Group (n=20, applied low frequency electrical stimulation and aquaatic exercise group). Each IV group measured hot plate examination, sciatic nerve functional index(SFI), c-fos.. In hot plate examination, group II, IV showed effect than group Iat 14 days after injured(p<0.01) and group III, Ⅳ showed effect than group I at 21, 28 days after in-jured(p<0.01, p<0.001). In SFI, group II, III, IV showed effect II, III, IV than group I and group IV showed effect than group II at 14, 21 days after injured(p<0.001). group II, III, IV showed effect than group I at 28 days after injured(II = p<0.01, III and IV = p<0.001). Effects of pain and function recovery when low frequency electrical stimulation and aqua-exercise applied to sciatic nerve injured rats, group Ⅳ were most effected to sciatic nerve injured rats. As well as group II and III were effected to sciatic nerve injured rats.

• 한방재활의학과학회지
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• 제19권3호
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• pp.15-32
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• 2009

Objectives : The purpose of this Study was to identify the effect of Dokhwalgisaeng-tang(Duhuoqisheng-tang) and Jungsongouhyul pharmacopuncture on pain control and nerve regeneration after crush injury in rat sciatic nerve. Methods : Neuropathic pain was induced by crush-induced model of right sciatic nerve. Animal groups were divided as follows; Group I: no treatment control group, Group II : experimental group treated with Dokhwalgisaeng-tang(Duhuoqisheng-tang), Group III : experimental group treated with Jungsongouhyul pharmacopuncture, and Group IV : experimental group treated with Dokhwalgisaeng-tang(Duhuoqisheng-tang) and Jungsongouhyul pharmacopuncture. To evaluate pain intensity, each group was observed paw withdrawal threshold and immunoreactivity on the c-fos before and after respective treatments in five hours, first, third, and fifth day. To evaluate nerve regeneration, those were observed SFI(Sciatic Functional Index) and GAP-43(Growth Associated Protein 43) after each treatment in seventh and thirteenth day. Results : 1. Paw withdrawal threshold to the mechanical stimuli made the significant difference between group IV and the control group after five days of the experiment. 2. Paw withdrawal threshold to the thermal stimuli made the significant difference between group I and III, I and IV, II and IV. 3. In immunohistochemical response of c-fos, as time passes, the immunoreactivity of all groups was decreased gradually. Especially, group IV was observed the lowest after three days. 4. The differences of sciatic function indexes in each group were significantly between group I and III, I and IV, II and IV after 14 days, and between group I and III, I and IV, II and IV, III and IV after 21 days. 5. In immunohistochemical response of GAP-43, all groups had higher GAP-43 immunoreactivity at the 14 days from post-injury and group IV showed highest immunoreactivity. Conclusions : Based on above the results, it is proposed that Dokhwalgisaeng-tang(Duhuoqisheng-tang) and Jungsongouhyul pharmacopuncture may be helpful as a treatment in neuropathic pain and nerve regeneration in rat model.