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Chemically bound Prussian blue in sodium alginate hydrogel for enhanced removal of Cs ions
Cho, Eunbee,Kim, Jongho,Park, Chan Woo,Lee, Kune-Woo,Lee, Taek Seung Elsevier 2018 Journal of hazardous materials Vol.360 No.-
<P><B>Abstract</B></P> <P>A new approach for efficient removal of radioactive <SUP>137</SUP>Cs was developed using a sodium alginate hydrogel beads-based adsorbent containing chemically bound Prussian blue (PB). Sodium alginate was crosslinked with Fe (III) ions to form hydrogel beads, in which Fe (III) had a dual function; it served as a crosslinking agent and also led to PB formation via reaction with hexacyanoferrate. Fe (III) ions, an unusual crosslinking agent for sodium alginate gel, led to stable, homogeneous distribution of PB inside the beads. The amount of embedded PB in the composite beads was more than two times larger than in the conventional sodium alginate-PB composite beads, resulting in an adsorption capacity for Cs ions that was two to five times higher, mainly because of a higher PB contents and because of the microporosity of the sodium alginate hydrogel.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Sodium alginate beads containing chemically bound PB beads were prepared. </LI> <LI> The beads showed improved adsorption of Cs ions compared to conventional sodium alginate beads containing PB. </LI> <LI> The beads showed efficient adsorption in a fixed bed column as well as in a batch with good stability. </LI> <LI> The beads exhibited high removal efficiency toward radioactive <SUP>137</SUP>Cs. </LI> </UL> </P>
A functional properties of apple blossoms by variety as a cosmetic material
Heechul Kim,Eunbee Lee,Songhyeon Kim,Eungyeong Lee,Jeongmin Yun,Seonjeong Kim,Changil Lee 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
This study investigated whether apple blossoms are functional as a cosmetic material. In this study, Crap apple, Hong-ro, Summer king, and Fuji varieties were used as samples. For each sample, general component analysis and functional tests were conducted, and total phenol contents, DPPH, ABTS, and PF tests were performed to find out antioxidant activity as functional tests. As a result of analyzing the general components of apple blossom, crude carbohydrates were 8.321∼11.425%, crude protein was 3.919∼4.724%, crude fat was 2.902∼3.430%, crude ash was 1.141∼1.218%, and moisture was 79.959∼83.112%. DPPH is 3.25% (25 μg/mL), 6.48% (50 μg/mL), 13.54% (100 μg/mL), ABTS is 10.77% (25 μg/mL), 23.16% (50 μg/mL), 45.60% (100 μg/mL), Crap apple showed the highest antioxidant activity. Also, the total phenol content was 173 mgGAE/g, which was the highest in the Crap apple sample. However, there was no significant difference in the PF values indicating the fat-soluble antioxidant activity among apple blossom varieties.
꼬막 껍질 파우더를 기반으로 한 3D 프린팅이 가능한 칼슘 인산염 시멘트 개발
조은비 ( Eunbee Cho ),굴노즈 ( Hasanova Gilnoz Olimovnar ),이성민 ( Sungmin Lee ),선우훈 ( Hoon Seonwoo ) 한국농업기계학회 2022 한국농업기계학회 학술발표논문집 Vol.27 No.2
Calcium Phosphate Cements (CPCs) scaffolds fabricated by three-dimensional (3D) printing are increasingly used of bone tissue repair. In general, the production rate of CPC is low because the amount of calcium phosphate compounds in existing raw materials such as cow bone and pork bone are small. On the other hand, cockle shells contain more than 99% of CaCO3, the main component of CPC, in the form of amorphous aragonite with excellent bioavailability. Therefore, in this study, Cockle shell powders-based CPC (CSP-CPCs) was produced by extrusion method using nozzles than the conventional nozzle for CPC 3D printing. The printability was improved by adding lactic acid and hyaluronic acid. We investigated the biocompatibility of the CSP-CPCs scaffolds using WST-1and Live/Dead were conducted, as well. In addition, CSP-CPCs were mounted on the mouse of the calvarial defect model to confirm bone regeneration. It is possible to create high added value in fishing villages by recycling natural products thrown away as marine waste through this method.
게슈탈트 관계성 향상 프로그램(GRIP)이 학교부적응 청소년의 정서조절곤란과 문제행동에 미치는 효과
이은비 ( Lee Eunbe ),김정규 ( Jungkyu Kim ) 한국게슈탈트상담심리학회 2013 한국게슈탈트상담연구 Vol.3 No.1
본 연구는 게슈탈트 관계성 향상 프로그램(GRIP)이 학교부적응 청소년의 정서조절곤란과 문제행동의 변화에 효과가 있는지 알아보고자 하는 목적으로 실시되었다. 연구 대상은 경기도 군포시의 ㅎ 위탁형 대안교육기관에 위탁된 학교부적응 청소년 10명이었다. 통제 집단은 타위탁형 대안교육기관의 청소년 10명을 무작위 선정하였으며, 아무런 처치를 하지 않았다. 프로그램의 효과성 검증을 위해서 정서조절곤란 척도(K-DERS)와 청소년 자기행동평가 척도(K-YSR)를 측정하였으며 사전-사후-추후 검사를 실시하였다. 본 연구의 결과를 요약하면 다음과 같다. 첫째, 게슈탈트 관계성 향상 프로그램은 학교부적응 청소년의 정서조절곤란을 유의미하게 감소시켰다. 둘째, 실험집단의 정서조절곤란척도의 사전, 사후, 추후 점수를 비교한 결과, 사전-사후 비교에서는 정서 비수용성의 하위 척도에서 유의미한 감소를 보였고, 사후-추후 비교에서는 충동통제곤란, 정서적 명료성의 부족, 정서조절 전략에 대한 접근 제한의 하위 척도에서 유의미한 감소를 보였다. 셋째, 문제행동에서는 실험집단과 통제집단의 유의미한 차이가 나타나지 않았다. 이에 따라 본 프로그램은 학교부적응 청소년의 정서조절 곤란에 효과적일 수 있음을 시사한다. The purpose of this study is to investigate the effect of Gestalt Relationship Improvement Program(GRIP) on emotional regulation difficulties and behavior problems of school maladaptive adolescents. The experimental group were 10 school maladaptive adolescents who charged to the charging type alternative education institutions in Gyeonggi Gunposi. The control group, who charged to the other charging type alternative education institutions, were selected randomly and didn't have any treatment. In order to verify the effectiveness of the program, emotional regulation difficulties and youth self report scales were used and pre-test, post-test and later-test were carried out both on the experiment group and the control group. The results of the study can be summarized as below. Firstly, Gestalt Relationship Improvement Program(GRIP) decreased with statistical significance in the emotional regulation difficulties scale of school maladaptive adolescents. Secondly, the emotional regulation difficulties scales of the experimental group's pre-, post- and later scores were compared, emotional non-aqueous sub-scale showed a significant reduction in pre-post comparisons, and impulse control difficulties, lack of emotional clarity, limited access to emotion regulation strategies sub-scales were significantly decreased. in post-later comparison. Third, behavior problems in the experimental group and the control group did not show significant differences. In conclusion, the study suggests that GRIP can be a effective for the reduction of emotional regulation difficulties of school maladaptive adolescents.
꼬막 껍질 파우더를 기반으로 한 3D 프린팅이 가능한 칼슘 인산염 시멘트 개발
조은비 ( Eunbee Cho ),굴노즈 ( Hasanova Gilnoz Olimovnar ),이성민 ( Sungmin Lee ),선우훈 ( Hoon Seonwoo ) 한국농업기계학회 2022 한국농업기계학회 학술발표논문집 Vol.27 No.2
Calcium Phosphate Cements (CPCs) scaffolds fabricated by three-dimensional (3D) printing are increasingly used of bone tissue repair. In general, the production rate of CPC is low because the amount of calcium phosphate compounds in existing raw materials such as cow bone and pork bone are small. On the other hand, cockle shells contain more than 99% of CaCO3, the main component of CPC, in the form of amorphous aragonite with excellent bioavailability. Therefore, in this study, Cockle shell powders-based CPC (CSP-CPCs) was produced by extrusion method using nozzles than the conventional nozzle for CPC 3D printing. The printability was improved by adding lactic acid and hyaluronic acid. We investigated the biocompatibility of the CSP-CPCs scaffolds using WST-1and Live/Dead were conducted, as well. In addition, CSP-CPCs were mounted on the mouse of the calvarial defect model to confirm bone regeneration. It is possible to create high added value in fishing villages by recycling natural products thrown away as marine waste through this method.
꼬막 껍질 파우더와 β-TCP를 기반으로 한 3D 프린팅이 가능한 칼슘 인산염 시멘트 개발
조은비 ( Eunbee Cho ),이주오 ( Juo Lee ),선우훈 ( Hoon Seonwoo ) 한국농업기계학회 2021 한국농업기계학회 학술발표논문집 Vol.26 No.2
Calcium Phosphate Cement(CPC) scaffolds fabricated by 3D printing are increasingly used in the field of bone tissue repair. Generally, production rate of CPCs are low since the amount of calcium phosphate compounds is small in conventional raw materials, such as bovine bone and porcine bone. On the other hand, cockle shell contains more than 99% of CaCO3, one of the main constituents of CPC, in the form of amorphous aragonite which has excellent bioavailability. Therefore, in this study, cockle shell powder and β-TCP based CPC scaffolds were fabricated through an extrusion method using nozzles which are narrower than conventional one for CPC 3D printing. Their morphology and biocompatibility were investigated. With this method, high-added value can be created for fishing villages due to the recycling of natural materials which is thrown away as marine waste.