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Kim, Danbee,Kim, Hakchan,Kim, Jaai,Lee, Changsoo Elsevier 2019 Bioresource technology Vol.288 No.-
<P><B>Abstract</B></P> <P>Anaerobic digestion of spent coffee grounds (SCG) is considered disadvantageous, particularly under mono-digestion conditions, owing to slow degradation and nutrient imbalance. This study investigated the effect of co-feeding of SCG at a low ratio into food waste (FW) digesters, with the aim to determine whether SCG can be effectively treated and valorized using the spare capacity of existing digesters. Duplicate reactors showed stable performance under FW mono-digestion conditions but manifested severe deterioration in three volume turnovers after co-feeding of SCG (FW:SCG at 10:1 on a volatile solids basis). The reactors failed to recover despite repeated interrupted feeding and stabilization, and <I>Ulva</I> was added (FW:SCG:<I>Ulva</I> at 20:2:1) for nutrient supplementation. The two reactors subjected to different stabilization strategies (i.e., timing and intervals of interrupted feeding) responded differently to <I>Ulva</I> co-feeding: one recovered and maintained stable albeit suboptimal performance, whereas the other failed. Furthermore, the microbial communities developed differently in the reactors.</P> <P><B>Highlights</B></P> <P> <UL> <LI> SCG was anaerobically treated as a co-substrate in continuous food waste digesters. </LI> <LI> SCG co-feeding at 10% of food waste (VS basis) led to major process disturbances. </LI> <LI> Stable performance was restored with added <I>Ulva</I> (5% of food waste) in one reactor. </LI> <LI> Stabilization strategies significantly influenced process resilience and stability. </LI> <LI> Both archaeal and bacterial community structures changed greatly after adding SCG. </LI> </UL> </P>
Kim Youngha,Yoon Junghee,Kim Nayeon,Lee Mangyeong,Kang Danbee,Park Hye Yun,Oh Dongryul,Sung Ki-Sun,Suh Gee Young,Ahn Jin Seok,Cho Juhee 대한의학회 2021 Journal of Korean medical science Vol.36 No.33
Background: The purpose of the study was to translate and linguistically validate a Korean language version of the PROMIS (K-PROMIS) for the six profile adult domains: Fatigue, Pain Intensity, Pain Interference, Physical Function, Sleep Disturbance, and Ability to Participate in Social Roles and Activities. Methods: A total of 268 items were translated into Korean according to the Functional Assessment of Chronic Illness Therapy multilingual translation methodology. Participants first completed approximately 27 to 35 items and were then interviewed to evaluate the conceptual equivalence of the translation to the original English language source. The K-PROMIS items that met the a priori threshold of ≥ 20% of respondents with comprehension difficulties in the cognitive interview. Results: 54 of the 268 items were identified as difficult items to comprehend for at least 20% of respondents in Round 1. The most frequently identified K-PROMIS domain on difficult items to comprehend was the Physical function (24.5%). Most items with linguistic difficulties were Fatigue and Physical function. Cultural difficulties were only included the Physical function and Ability to Participate in Social Roles and Activities domains. 25 of 54 items were slightly revised, and then these revised items were tested with additional six participants in Round 2, and most participants had no problems to understand modified items. Conclusion: The six profile adult domains of K-PROMIS have been linguistically validated. Further psychometric validation of the K-PROMIS items will provide additional information of meaningful outcomes for chronic disease and clinical setting.
PLASMA EFFECTS ON HUMAN LIVER CANCER CELLS
Daeyeon Kim,Bomi Gweon,Danbee Kim,Sukhyun Song,Mina Kim,Se Youn Moon,Wonho Choe,Jennifer H. Shin 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
Low pressure plasma has been widely used in surface treatment of solid materials. In recent years, atmospheric plasma (cold plasma) is introduced in biomedical applications. In general, many types of cellular behaviors depend on the plasma density or intensity. While the plasma-treated cells are detached because of the plasma-induced damage of cell adhesion molecules at low plasma density, the cell membranes are destructed and the necrosis of cells occurs at high plasma density. In this research, we investigate the effects of plasma on cancerous cells. We treat the target human liver cancer cells (HepG2 and SK-Hep1) using a He plasma needle device, which has a pin type plasma jet. We aim to identify the plasma effects on cancerous cells as a function of the treatment time and applied power. This study may contribute to the development of a novel cancer therapy.
KWON, Danbee,KIM, Jaehwan,LEE, Hyeeun,KIM, Byeol,HAN, HyunHee,OH, HyunJu,KIM, MinJung,YOON, Hakyoung,LEE, ByeongChun,EOM, Kidong The Japanese Society of Veterinary Science 2018 The Journal of veterinary medical science Vol.80 No.4
<P>This study aimed to demonstrate the higher accuracy and reproducibility of quantitative computed tomography (QCT) compared with dual-energy X-ray absorptiometry (DXA) as a gold standard for measuring canine bone mineral density (BMD). Seven middle-aged beagle dogs underwent lumbar vertebral and bilateral femoral DXA and QCT scans. BMD (mg/cm<SUP>2</SUP>) was measured at the vertebral body from L2 to L6, femoral neck, and proximal and distal femoral diaphyses. The BMD values were measured 3 times and compared. The BMD value on QCT was higher than that on DXA for femoral BMD but not for vertebral BMD. The correlation was strong for the lumbar vertebrae (r=0.66) and was strongest for L3 (r=0.85). No correlation was found for the femoral neck (<I>P</I>=0.35), and only moderate correlations were found for the proximal and distal femoral diaphyses (r=0.43 and r=0.40, respectively). The limits of agreement were narrower for vertebral BMD than for femoral BMD, and L3 had the narrowest limits of agreement. The intraclass correlation (ICC) was higher for DXA than for QCT at all lumbar and femoral sites measured, but the ICC of QCT was higher than 0.7. In conclusion, L3 can be used to monitor changes in BMD, and relative values and sequential monitoring of femoral BMD can also be useful because of the high reproducibility of QCT measurements. QCT would be a useful technique for evaluation of BMD in veterinary practice.</P>