왕겨흑액의 수초지 표면코팅 특성평가

성용주(Yong Joo Sung),김동성(Dong Sung Kim),이지영(Ji Young Lee) 한국펄프·종이공학회 2016 펄프.종이技術 Vol.48 No.6

The applicability of rice husk black liquor as coating material was evaluated in this study. Since the black liquor originated from the alkaline digestion of rice husk contained not only organic components such as lignin but also silica, the properties of the coated layer of rice husk black liquor before and after the silica extraction were evaluated. Although the contact angle of handsheet samples was not changed before and after the black liquor coating, the water absorption time was significantly increased before and after the black liquor coating. The higher improvement in the water absorption time was found in case of the black liquor coating after silica extraction. The addition of functional additives such as PVAm and AKD to the black liquor resulted in the different coating properties. Especially, the addition of AKD greatly increased the contact angle and the water absorption time of the black liquor coated layer. The black liquor after silica extraction, resulted in the greater increase of the contact angle than those of the black liquor before silica.

『세상과 나 사이』: 흑인 몸의 파괴와 코츠의 대안적 비전

김은형 한국영어영문학회 2023 영어 영문학 Vol.69 No.4

In Between the World and Me, Ta-Nehisi Coates explores the concept of “black disembodiment” within the context of the Black Lives Matter era. He argues that even 150 years after the abolition of slavery, this issue persists due to deeply entrenched national ideologies in the United States, including liberalism, the American Dream, the American Enlightenment, and individualism. The hierarchical and exclusionary nature of these ideologies has not only resulted in the destruction of black lives but has also contributed to environmental degradation, all under the pretext of a sovereign individual’s pursuit of freedom and property through their dominance over others. Consequently, the destruction of black lives and the natural environment has become an inevitable outcome of this country’s social contract. Various attempts at race reform, including Supreme Court decisions, civil rights movements, and constitutional amendments, have faltered primarily because they are steeped in the dominant ideologies of the nation, thus failing to effectively address the reality of black disembodiment. Coates implores us to reject the prevailing order of hierarchy and domination perpetuated by these national ideologies. Instead, he calls for the embrace of mutual equality and vulnerability. This perspective is essential for ending the destruction of black lives and addressing the impending climate crisis, which threatens everyone, regardless of their race. In this manner, Coates’s memoir highlights the inherent limitations of current ideologies and underscores the urgency of fostering a new communal discourse rooted in an awareness of our interdependence and vulnerability in the face of ongoing violence against black lives.

Inactivation of Salmonella Typhimurium and Escherichia coli O157:H7 on black pepper powder using UV-C, UV-A and TiO2 coating

박미정,김진희,오세욱 한국식품과학회 2020 Food Science and Biotechnology Vol.29 No.2

This study was conducted to measure the inactivation characteristics of UVs and TiO2 against Salmonella. Typhimurium and Escherichia coli O157:H7 on black pepper powder. The sample was irradiated by UV-A and UV-C combined with TiO2 coating. After treatment, microbial and physicochemical analysis was carried out. Among various sterilization conditions, the largest number of pathogen in black pepper powder was inactivated by UV-A and UV-C combined with TiO2 coating. The microbial count of black pepper powder treated simultaneously with UV-A and UV-C was less than that of black pepper powder treated with alone. The inactivation effect of UV-A and UV-C was increased when TiO2 coating was combined. Moisture content was decreased with increasing treatment time, but color did not change. In this study, it was indicated that the combined treatment of UV-C, UV-A and TiO2 coating was effective for reducing S. Typhimurium and E. coli O157:H7 on black pepper powder.

Preparation and Characterization of Black Cobalt Solar Selective Coatings

Kil Dong Lee 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.57 No.1

Black cobalt (cobalt oxide) solar selective coatings were prepared on copper substrates by using an electroplating technique. The changes in the physical properties of the cobalt coating due to thermal degradation were characterized by using Auger electron spectroscopy, glow discharge spectrometry, ultraviolet-visible-near infrared spectrophotometer and atom force microscopy. The optimum black cobalt solar selective coating was prepared on a copper substrate by using a synthesized electrolyte with CoCl2 and KSCN at a current density of about 0.5 A/dm2 for 45 s ∽ 60 s. Its optical properties were a solar absorptance of the order of 0.80 ∽ 0.84 and a thermal emittance of 0.01. From the depth profile analysis, the concentration of cobalt particles near the film-substrate interface was higher than that at the surface, but the oxygen concentration at the surface was higher than that at the interface. These results suggest that the selective absorption was dominated by this chemical composition variation in the cobalt coating. The surface mophology of this film, as observed by using atomic force microscopy, showed that the surface was composed of a nearly uniform coating with a small rough surface and pores. We also found that the thermal degradation of the black cobalt coating annealed for 43 hours at temperatures of 250 ∽ 350 ℃ occurred primarily due to diffusion of copper substrate materials into the cobalt film. The results of the thermal stability test showed that the black cobalt selective coatings on copper substrates were stable during use at temperatures under 250 ℃.

Coat Color Patterns and Genotypes of Extension and Agouti in Hanwoo and Jeju Black Cattle

Sang-Hyun Han(한상현),In-Cheol Cho(조인철),Jae-Hwan Kim(김재환),Moon-Suck Ko(고문석),Young-Hoon Kim(김영훈),Eun-Young Kim(김은영),Se-Pill Park(박세필),Sung-Soo Lee(이성수) 한국생명과학회 2011 생명과학회지 Vol.21 No.4

소의 Extension(E), Agouti(A) 유전자형과 모색유전양상의 연관관계를 이해하기 위해, 한우와 제주흑우(JBC), 이들 사이에서 생산된 교배후손에서 melanocortin-1 receptor( MC1R)과 agouti signaling protein( ASIP)의 유전자형을 분석하였다. 흑모색의 JBC에서는 세 가지 MC1R대립인자들(E<SUP>D</SUP>, E?, e)이 모두 발견되었다. JBC 집단은 한우에서 우점적으로 나타나는 열성동형접합자(e/e)가 발견되지 않았다. 반면, MC1R E?/e한우는 흑모색이 아닌 갈색이나 적색의 모색을 나타내었다. ASIP유전자에서, 한우에서는 L1-BT 전위인자의 삽입/결실에 의해 세 가지 유전자형(A/A, A/A<SUP>Br</SUP>, A<SUP>Br</SUP>/A<SUP>Br</SUP>)이 모두 관찰되었다. JBC 집단에서는 ASIP A<SUP>Br</SUP> 대립인자가 드물게 관찰되고, ASIP A<SUP>Br</SUP>/A<SUP>Br</SUP> 동형접합인 개체들은 발견되지 않았다. ASIP A<SUP>Br</SUP> 대립인자를 보유하더라도 한우와 JBC, 이들의 교배후손에서도 agouti-유사 얼룩무늬 모색은 발견되지 않았다. 교배후손의 모색은 Agouti 유전자형과는 무관하고, Extension유전자형과 직접적으로 연관되어 황-갈색(e/e)과 암-갈/흑색(E?/e)으로만 구분되었다. ASIP유전자형은 아마도 한우 또는 교배 후손에서 모색의 발달에 영향이 없는 것으로 추정된다. 본 연구 결과는 한우, 제주흑우, 이들의 교배후손에서 MC1R유전자형이 모색 표현형을 결정하며, ASIP유전자형은 모색의 변이에는 핵심적인 역할을 수행하지 않는다는 것을 시사한다. To understand the relationship between coat color inheritance patterns and genotypes of Extension( E) and Agouti( A) loci in cattle, the genotypes for melanocortin-1 receptor( MC1R) and agouti signaling protein ( ASIP) were analyzed in Hanwoo, Jeju black cattle (JBC), and their crossbred progeny. Three MC1R alleles ( E<SUP>D</SUP>, E?, and e) were found in the black-colored JBC population. JBC had no recessive homoygotes (e/e), but this genotype was predominant in the Hanwoo breed. However, MC1R E?/eHanwoo did not produce a black coat color as they appeared either as brown or solid red. For ASIP, three genotypes ( A/A, A/A<SUP>Br</SUP>, and A<SUP>Br</SUP>/A<SUP>Br</SUP>) were determined by insertion/deletion of an L1-BT element in Hanwoo. The ASIP A<SUP>Br</SUP> allele was rarely observed, and no ASIP A<SUP>Br</SUP>/A<SUP>Br</SUP> homozygotes were detected in the JBC population. Cattle carrying ASIP ABr did not show any agouti-like brindle pigmentation patterns in either breed or their progeny. The coat colors of the crossbred progeny were discriminated by two colors, yellowish-brown versus dark-brown or black, and their coat colors were directly related to the genotypes of the Extensionlocus, yellowish-brown (e/e) and dark-brown or black (E?/e), but not to the Agouti locus. ASIP genotypes probably did not affect coat color development in the Hanwoo or crossbred progeny. Our results suggest that the ASIP genotypes do not play key roles in coat color variation, but the MC1R genotypes do direct the phenotypes of Hanwoo, JBC, and their progeny.

흑색 코발트 태양 선택흡수막의 광학적특성과 구조

이길동(Lee,Kil-Dong) 한국태양에너지학회 2011 한국태양에너지학회 논문집 Vol.31 No.4

Black cobalt solar selective coatings were prepared by thermal oxidation of electroplated cobalt metal on copper and nickel substrates, The optical properties and structure of the black cobalt selective coating for solar energy utilizations were characterized by glow discharge spectrometry (GDS), ultraviolet-visible-near infrared (UV-VIS-NIR) spectrometer, atom force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). The optical properties of optimum black cobalt selective coating prepared on copper substrate were a solar absorptance of 0.82 and a thermal emittance of 0.01. From the GDS depth profile analysis of these coatings, the concentration of cobalt particles near the interface was higher than at the surface, but oxygen concentration at the surface was higher than at the interface. These results suggest that the selective absorption was dominated by this chemical composition variation in the coating. The surface of this film exhibited morphology with root-mean-square (rms) roughness of about 144.3 ㎚. XPS measurements data showed that several phases of Co coexist (Co₃O₄, CoO) in the film.

검정콩 단경 대립 다수성 신품종 “흑성”

한원영,김현태,백인열,고종민,오기원,신상욱,박금룡,하태정,문중경,임시규,정명근,강성택,윤홍태,오영진,김선림,최재근,주정일,손창기,김용덕 한국육종학회 2010 한국육종학회지 Vol.42 No.6

1. 신육형은 유한신육형, 화색은 자색, 엽형은 환형이다. 모용 및 성숙기의 협은 갈색이며 종피색과 제색은 흑색이고 종실 자엽색은 황색이다. 입형은 장형으로 성숙기가 지나면 협의 자연개열이 다소 나타난다. 2. 성숙기는 10월 3일로 ‘일품’ 검정콩보다 4일 늦으며, 경장은 54 cm로 4 cm 길고, 100립중은 29.2 g으로 ‘일품’ 검정콩 보다 1.6 g 무겁다. 3. 도복에 비교적 강하며, 포장 재배기간중의 모자이크 바이러스병은 다소 발생하였으 A new black seed coat soybean cultivar, ‘Heugseong’ was developed at the National Institute of Crop Science (NICS) in 2008. The goal to breed the black seed coat soybean is to develop the cultivar with large seed size, high yield, lodging tolerance, and resistance to disease such as soybean mosaic virus (SMV), and bacterial pustule. ‘Heugseong’ was selected from the cross between ‘Gnome85’, showing yellow seed coat, lodging tolerance, and high yield, and ‘Cheongja’, showing green cotyledon, and black seed coat. The preliminary, advanced and regional yield trials for this cultivar were carried out from 2004 to 2008. It has determinate growth habit, purple flower, brown pubescence, brown pod color, black seed coat, yellow cotyledon, elongated seed shape, oval leaf shape and large seed size (29.2 grams per 100 seeds). It was 4 days later in maturity than the check cultivar ‘Ilpumgeomjeongkong’. ‘Heugseong’ was better than the check cultivar in the seed quality of isoflavone contents (1,913 ㎍/g). It has good adaptability for cooking with rice in ratio of water absorption and seed hardness, for physics of black tofu, and for fermented black soybean paste. The average yield of ‘Heugseong’ was 2.37 ton per hectare in the regional yield trials carried out in six locations of Korea from 2006 to 2008.

단경 내도복 다수성 검정콩 신품종 ‘검정5호’

한원영,고종민,백인열,김현태,전명기,박금룡,이병원,이영훈,신상욱,심하식,하태정,문중경,오영진,이석기,최재근,이종형,이승수 한국육종학회 2013 한국육종학회지 Vol.45 No.1

신품종 ‘검정5호’의 신육형은 유한신육형, 화색은 자색, 엽형은 환형이다. 모용 및 성숙기의 협은 갈색이며 종피색과 제색은 흑색이고 종실 자엽색은 황색이다. 입형은 구형으로 성숙기가 지나면 협의 자연개열이 다소 나타난다. 성숙기는 10월 4일로 ‘일품검정콩’보다 6일 늦으며, 경장은 60 cm로 6 cm 길고, 100립중은 23.2 g으로 ‘일품검정콩’ 보다 가볍다. 도복에 비교적 강하며, 포장 재배기간중의 모자이크 바이러스병은 다소 발생하였으나 괴저병에는 강하였으며, SMV 균주로 즙액 접종한 결과 바이러스병에 저항성을 보였다. 조단백 함량은 42.0%, 조지방 함량은 17.8%였다. 안토시아닌 색소 및 아이소플라본 함량은 각각 17,170 ㎍/g 및 1,194 ㎍/g였다. 두부 가공적성에서 두부수율은 ‘태광콩’과 비슷하나 비지무게는 높았고, 밝기 등 색택이 짙으며, 두부의 물성에서 씸힘성 및 경도는 다소 높았고, 탄력성은 다소 낮았다. 수량성은 지역적응시험 결과 전국 7개소 평균 ha당 2.46톤으로서 대조품종 ‘일품검정콩’에 비하여 16% 증수되었다. 적응지역은 전국이다. A new black seed coat soybean cultivar, ‘Geomjeong 5’ was developed at the National Institute of Crop Science (NICS) in 2009. The goal of breeding was to develop a cultivar with high yield, lodging tolerance, and resistance to disease such as soybean mosaic virus (SMV), and bacterial pustule. ‘Geomjeong 5’ was selected from the cross between ‘Shinpaldal 2’, showing yellow seed coat, lodging tolerance, and high yield, and ‘Geomgjeong 2’, showing yellow cotyledon, large seed size, and black seed coat. The preliminary, advanced and regional yield trials for this cultivar were carried out from 2005 to 2009. It has determinate growth habit, purple flower, brown pubescence, brown pod color, black seed coat, yellow cotyledon, spherical seed shape, oval leaf shape and middle seed size (23.2 grams per 100 seeds). It was 6 days later in maturity than the check cultivar ‘Ilpumgeomjeongkong’. It has good physical property for black tofu. The average yield of ‘Geomjeong 5’ was 2.46 ton per hectare in the regional yield trials carried out in seven locations of Korea from 2007 to 2009.

Influence of carbon black content and film thickness on vapor detection properties of polyvinylpyrrolidone composite sensors

Elsevier 2010 CURRENT APPLIED PHYSICS Vol.10 No.1

Chemoresistive carbon black-polyvinylpyrrolidone (CB-PVP) composite sensors were prepared with different physical properties in CB dispersion, CB content and film thickness by using the fabrication method of a drop casting or a spin coating. To verify the influences of the physical properties, their vapor detection characteristics were measured and evaluated in terms of the magnitude in sensor responses. From these evaluations, the highest response was observed around at the optimized CB contents of 12.5wt.% for the drop casting and 17.5wt.% for the spin coating. Furthermore, homogeneous CB dispersion and careful thickness regulation were found to be necessary to achieve a sensor with good performance.

Influence of carbon black content and film thickness on vapor detection properties of polyvinylpyrrolidone composite sensors

김용신 한국물리학회 2010 Current Applied Physics Vol.10 No.1

Chemoresistive carbon black–polyvinylpyrrolidone (CB-PVP) composite sensors were prepared with different physical properties in CB dispersion, CB content and film thickness by using the fabrication method of a drop casting or a spin coating. To verify the influences of the physical properties, their vapor detection characteristics were measured and evaluated in terms of the magnitude in sensor responses. From these evaluations, the highest response was observed around at the optimized CB contents of 12.5 wt.% for the drop casting and 17.5 wt.% for the spin coating. Furthermore, homogeneous CB dispersion and careful thickness regulation were found to be necessary to achieve a sensor with good performance.