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IEEE 2018 IEEE transactions on intelligent transportation sy Vol.19 No.5
<P>In <xref ref-type='bibr' rid='ref1'>[1]</xref>, the second author’s name should be Sang-Yun Jeon and his affiliation is the Department of Mechanical and Aerospace Engineering and the Institute of Advanced Machines and Design, Seoul National University, Seoul 151–744, South Korea.</P>
Yun Sang Choi,Hyun Wook Kim,Ko Eun Hwang,Dong Heon Song,Tae Jeon Jeong,Young Boong Kim,Ki Hong Jeon,Cheon Jei Kim 한국축산식품학회 2015 한국축산식품학회지 Vol.35 No.3
In this study, we evaluated the effects of dietary fiber extracted from Algelica keiskei Koidz on the chemical composition, cooking characteristics, and sensory properties of chicken patties. The chicken patties with Algelica keiskei Koidz dietary fiber had significantly higher moisture and ash content, and yellowness than the control sample (p<0.05). Energy value, cooking loss, reduction in diameter, reduction in thickness, lightness, redness, hardness, cohesiveness, gumminess, and chewiness of the control samples was significantly higher than chicken patties with Algelica keiskei Koidz dietary fiber (p<0.05). The sensory evaluation indicated that the greatest overall acceptability in chicken patties was achieved at Algelica keiskei Koidz dietary fiber levels of 1% and 2%. Chicken patties supplemented with 2% Algelica keiskei Koidz dietary fiber had improved quality characteristics.
Yun Sang Choi,Jun Seok Kum,Ki Hong Jeon,Jong Dae Park,Hyun Wook Choi,Ko Eun Hwang,Tae Jun Jeong,Young Boong Kim,Cheon Jei Kim 한국축산식품학회 2015 한국축산식품학회지 Vol.35 No.6
The effects of sea tangle, sea mustard, hijiki, and glasswort were investigated based on the proximate composition, salinity, cooking loss, emulsion stability, pH, color, texture profile analysis, apparent viscosity, and sensory characteristics of reduced-salt (NaCl) meat batter and frankfurters. The moisture content, salinity, lightness of the meat batter and frankfurter, hardness, gumminess, and chewiness of the reduced-salt frankfurters with sea weeds were lower than the control without seaweed (p<0.05). The protein content, springiness, and cohesiveness of the reduced-salt frankfurters were not significantly different among the treatments (p>0.05). The moisture content, salinity, cooking loss, lightness, redness, hardness, gumminess, and chewiness of treatments with sea tangle and with sea mustard were lower than the control (p<0.05). Among the sensory traits, color was highest in the control (p<0.05). The flavor was also highest in the control. The treatments with sea tangle and with sea mustard samples had high tenderness, juiciness, and overall acceptability scores similar to the control (p<0.05). The results of this study show that the combination of low-salt and seaweed in the formulation successfully improved reduced-salt frankfurters, improving sensory characteristics to levels similar to the regular salt control (1.5%).
Sung, Sihyong,Jeon, Hyunwoo,Sarak, Sharad,Ahsan, Md Murshidul,Patil, Mahesh D.,Kroutil, Wolfgang,Kim, Byung-Gee,Yun, Hyungdon The Royal Society of Chemistry 2018 Green Chemistry Vol.20 No.20
<P>Running two two-step cascades in parallel anti-sense to transform an alcohol to an amine allowed the conversion of ω-hydroxy fatty acids (ω-HFAs) and α,ω-diols to the corresponding ω-amino fatty acids (ω-AmFAs) and α,ω-diamines, respectively. The network required only two enzymes namely an aldehyde reductase (AHR) and a transaminase (TA). Benzylamine served on the one hand as amine donor and on the other hand after deamination to benzaldehyde also as oxidant. All ω-HFAs tested were efficiently transformed to their corresponding ω-AmFAs using purified enzymes as well as a whole-cell system, separately expressing both the enzymes, with conversions ranging from 80-95%. Additionally, a single-cell co-expressing all enzymes successfully produced the ω-AmFAs as well as the α,ω-diamines with >90% yield. This system was extended by employing a lactonase, enabling the transformation of ε-caprolactone to its corresponding ω-AmFA with >80% conversion.</P>
Jeon, Soyeon,Sun, Cheng,Yu, Seong Hoon,Kwon, Soon-Ki,Chung, Dae Sung,Jeong, Yong Jin,Kim, Yun-Hi American Chemical Society 2020 ACS APPLIED MATERIALS & INTERFACES Vol.12 No.2
<P>Organic flash memories that employ solution-processed polymer semiconductors preferentially require internal stability of their active channel layers. In this paper, a series of new donor-acceptor copolymers based on cyclopentadithiophene (CDT) and diketopyrrolopyrrole (DPP) are synthesized to obtain high performance and operational stability of nonvolatile floating-gate memory transistors with various additional donor units including thiophene, thiophene-vinylene-thiophene (CDT-DPP-TVT), selenophene, and selenophene-vinylene-selenophene. Detailed analyses on the photophysical, two-dimensional grazing incident X-ray diffraction, and bias stress stability are discussed, which reveal that the CDT-DPP-TVT exhibits excellent bias stress stability over 10<SUP>5</SUP> s. To utilize the robust nature of CDT-DPP-TVT, floating-gate transistors are fabricated by embedding Au nanoparticles between Cytop layers as a charge storage site. The resulting memory devices reveal bistable current states with high on/off current ratio larger than 10<SUP>4</SUP> and each state can be distinguished for more than 1 year, indicating a long retention time. Moreover, repetitive writing-reading-erasing-reading test clearly supports the reproducible memory operation with reversible and reliable electrical responses. All these results suggest that the internal stability of CDT-DPP-TVT makes this copolymer a promising material for application in reliable organic flash memory.</P> [FIG OMISSION]</BR>
Yun Sang Choi,Su Kyung Ku,Ji Yun Jeong,Ki Hong Jeon,Young Boong Kim 한국축산식품학회 2015 한국축산식품학회지 Vol.35 No.1
The ultrastructure in the beef muscle of the electro-magnetic resonance and air blast freezing during the frozen storage, and the changes in the quality characteristics after thawing were evaluated. The size of ice crystal was small and evenly formed in the initial freezing period, and it showed that the size was increased as the storage period was elapsed (p<0.05). The beef stored by the electro-magnetic resonance freezing showed the size of ice crystal with a lower rate of increase than the air blast freezing during the frozen storage. The thawing loss of beef stored by the electro-magnetic resonance freezing was significantly lower than the air blast freezing during frozen storage (p<0.05), and it showed that the thawing loss of the round was higher than the loin. Water holding capacity decreased as the storage period became longer while the electromagnetic resonance freezing was higher than the air blast on 8 month (p<0.05). As a result of sensory evaluation, the beef stored by the electro-magnetic resonance freezing did not show the difference until 4 months, and it showed higher accept ability in comparison with the beef stored by the air blast freezing. Thus, it is considered that the freezing method has an effect on the change in the ultrastructure and quality characteristics of the beef.
The Role of Corticosteroids in Stress-Induced Gastric Ulceration in Rats
Sang Kuk Byun,Yea Eun Lee,Sunhee Shin,Ja Young Jang,Byong-il Choi,Dongsun Park,Jeong Hee Jeon,Sang-Seop Nahm,Seock-Yeon Hwang,Yun-Bae Kim 한국실험동물학회 2007 Laboratory Animal Research Vol.23 No.2
Although the mechanism of stress-induced gastric ulcer has not been defined yet, it is clear that gastric ulcer is occurred by stress. Moreover, the gastric ulcerogenic action of corticosteroids that increase in blood during stress is controversial. To elucidate the involvement of corticosteroids in stress-induced gastric ulceration, we used adrenalectomized or macrophage-depleted animals. Rats were bilaterally-adrenalectomized and were given saline solution as a drinking water for 6 days. Separately, the animals for macrophage depletion were intraperitoneally administered with silica (SiO₂, 500 ㎎/㎏) for 6 days prior to challenge with water-immersion restraint stress (WIRS) for 4 hr. Adrenalectomy greatly reduced blood cortisol concentrations. Also, silica treatment lowered the number of macrophages to 48% of control and the differential count from 7.34% in normal animals to 2.48%, leading to a marked decrease in blood cortisol and corticosterone levels. WIRS significantly enhanced corticosteroid levels in normal and sham operated rats, and induced severe gastric ulcers. In contrast, adrenalectomy and silica treatment remarkably attenuated the stress-induced gastric ulceration, reducing the ulcer index to 30% and 10% of control level, respectively. Taken together, it is suggested that compensatory secretion of corticosteroids following macrophage activation may playa role in stress-induced gastric ulceration.
Sang-Chul Kwon,Sunhee Shin,Jeong Hee Jeon,Dongsun Park,Min-Jung Jang,Jwa Jin Kim,Chang Hwan Kim,Jae-Hyun Jeong,Yun-Bae Kim 한국실험동물학회 2008 Laboratory Animal Research Vol.24 No.1
The effects of rose petal extract (RPE) and Ganoderma lucidum culture (GLC) on the systemic and local anaphylactic reactions induced by compound 48/80 were investigated in mice. To induce systemic anaphylactic shock, male ICR mice were intraperitoneally challenged with a lethal dose (8 ㎎/㎏) of compound 48/80, a mast cell degranulator, 30 min after intraperitoneal administration of RPE or GLC (10, 32 or 100 ㎎/㎏). In comparison with 100% death, within 60 min, of control mice administered with vehicle, the mortalities of mice pretreated with 32 and 100 ㎎/㎏ of RPE were decreased to 20 and 0%, respectively. A dose-dependent decrease in the mortality was also achieved with GLC, resulting in 60, 20 and 0% in mice pretreated with 10, 32 and 100 ㎎/㎏, respectively. In local atopic dermatitis induced by intradermal injection of compound 48/80 (50 ㎍/site), the mice exhibited 169.1±10.5 times of scratching behaviors for 30 min and vascular leakage of Evan's blue; 118.3±16.9 mm2 in size and 2.61±0.48 μg in amount. The scratching behaviors induced by compound 48/80 was significantly attenuated by 6-day oral pretreatment with RPE (300 ㎎/㎏) to 86.9±16.4 times. In addition, Evan's blue leakage was also greatly reduced by RPE. In contrast, GLC did not decrease both the number of scratching behaviors and dye leakage, implying that different factors other than histamine are also involved in the atopic dermatitis induced by compound 48/80. Taken together, it is suggested that RPE contains ingredients inhibiting degranulation or action of inflammatory mediators from mast cells, and that could be a promising candidate for the prevention of systemic or local allergic reactions including atopic dermatitis.
( Sang Soo Kim ),( Yun Kyung Jeon ),( Soo Hyung Lee ),( Bo Hyun Kim ),( Seong Jang Kim ),( Yong Ki Kim ),( In Ju Kim ) 대한내과학회 2014 The Korean Journal of Internal Medicine Vol.29 No.3
We report a rare case of distant subcutaneous parathyroid carcinoma recurrence. A 50-year-old woman was referred to our hospital because of sustained hypercalcemiadespite surgical removal of a parathyroid carcinoma. A focal uptake in theupper mediastinal area was detected in a 99mTc-sestamibi scan, and 18F-fluorodeoxyglucose(FDG) positron-emission tomography (PET)/computed tomography(CT) imaging demonstrated a subcutaneous mass. She underwent tumor resection,and the pathological findings were consistent with a parathyroid carcinoma. The postoperative serum parathyroid hormone (PTH) level remained withinnormal limits. However, a new palpable solitary mass was identified in the upperportion of the left breast 1 year postoperatively. Both a 99mTc-sestamibi scanand 18F-FDG PET/CT imaging revealed an abnormal lesion in the upper breast,and subsequent pathology reports confirmed parathyroid carcinoma metastasis. Serum PTH and calcium levels fell within normal ranges after tumor resection. Two subcutaneous recurrent lesions appeared likely due to tumor seeding duringthe previous endoscopic operation at a local hospital.