Productivity Loss of Rheumatoid Arthritis Patients according to the Their Stages of the Disease Activity Score

( Sang-Cheol Bae ),( Jin-Hye Cha ),( Jung-Yoon Choe ),( Sung Jae Choi ),( Soo-Kyung Cho ),( Won-Tae Chung ),( Chung-Il Joung ),( Young-Ok Jung ),( Young Mo Kang ),( Dong-Wook Kim ),( Jinseok Kim ),( Y 대한류마티스학회 2018 대한류마티스학회지 Vol.25 No.2

Objective. Productivity loss was compared by 3-stage of disease activity and associations between higher disease activity and high productivity loss were identified. Methods. Data were extracted from Rheumatoid Arthritis (RA) Patient-reported Outcomes Research, which enrolled 2,000 RA patients (>20-year) on disease-modifying-antirheumatic-drugs (DMARDs) (≥ 6-month) from December 2012 to June 2013. This included 1,457 RA patients with the disease activity score (DAS-28-ESR) in their medical charts. Productivity loss in time and indirect cost was estimated using The World Health Organization Health and Work Performance Questionnaire (HPQ). Baseline characteristics and productivity loss outcomes were compared according to DAS-28-ESR groups. Results. 84.4% were females, 54.2% had low DAS-28-ESR (<3.2), and 38.2% and 7.6% had moderate (3.2∼5.1) and high DAS-28-ESR (>5.1). Patients with moderate to high DAS-28-ESR had higher lost productivity time (LPT) and monthly costs of LPT than those with low DAS-28-ESR (time in hours: 110.0±58.4 vs. 132.4±57.2 vs. 71.5±52.0, p<0.0001; monthly costs of LPT in 1,000 Korean won: 1,097±607 vs. 1,302±554 vs. 741±531, p<0.0001). Multiple regression analyses revealed significant associations with high LPT in high (adjusted odds ratio [OR]=3.87, 95% confidence interval [CI]: 2.18∼6.87) and moderate DAS-28-ESR (adjusted OR=1.88, 95% CI: 1.41∼2.52) compared to low DAS-28-ESR. In addition, positive associations with high monthly costs of LPT were observed in high (adjusted OR=3.45, 95% CI: 1.98∼5.99) and moderate DAS-28-ESR (adjusted OR=1.93, 95% CI: 1.43∼2.54) compared to low DAS-28-ESR. Conclusion. Timely therapeutic strategies should be taken into consideration given that the RA patients with moderate to high DAS-28-ESR showed strong associations with high productivity loss for effective management of RA. (J Rheum Dis 2018;25:122-130)

3분과 : 가선집재작업에서의 작업 생산성 및 비용 분석

한원성 ( Won Sung Han ),한한섭 ( Han Sup Han ),김남훈 ( Nam Hun Kim ),차두송 ( Du Song Chu ),조구현 ( Koo Hyun Cho ),민도홍 ( Do Hong Min ),권기철 ( Ki Cheol Kwon ) 한국임학회 2014 한국산림과학회지 Vol.103 No.1

본 연구에서는 임목수확작업에 사용되는 집재기계의 작업효율성을 분석하여 경사가 급한(20° 이상) 작업조건에 적합한 가선계 집재기계를 선정하는데 기초 정보를 제공하고자, 타워야더(RME-300T), 트랙터부착형 집재기(일명: 춘천집재기), 트랙터윈치(FARMI) 등에 의한 집재작업에서의 작업생산성 및 비용을 비교 분석하였다. 평균 흉고직경이 20 cm, 집재거리 60 m, 가로집재거리 10 m, 그리고 기계이용률이 70%인 동일한 작업 조건에서 작업이 이루어질 경우, 타워야더의 1일 집재작업 생산성은 33.04 m3/일, 트랙터부착형 집재기는 38.47 m3/일, 그리고 트랙터윈치는 14.17 m3/일으로 분석되었으며, 이에 따른 집재작업비용은 각각 25,105원/m3, 20,520원/m3, 37,835원/m3으로 나타났다. 동일한 작업조건에서 집재거리에 따른 각 집재기계별 작업효율성을 비교하였을 경우, 집재거리가 40 m 이내로 짧을 경우에는 트랙터윈치에 의한 집재작업이 효율적이며, 40~140 m의 집재거리에서는 춘천집재기가, 140 m 이상의 장거리 집재작업에서는 타워야더가 가장 효율적인 것으로 나타났다. This study was conducted to provide field-based harvesting study information which can be used to select an optimal cable system for certain work conditions on steep grounds (>20° ground slope) in Korea. Toaccomplish this study objectives, we evaluated three cable yarding systems (RME-300T tower-yarder, Chuncheontower-yarder, FARMI tractor winch) working in typical work conditions for their yarding productivity and operational efficiency. Those yarders are commonly used for removing logs or trees on steep grounds in Korea. Under the same work conditions (average DBH of tree to be cut, 20 cm; yarding distance, 60 m; lateral yardingdistance, 10 m; and machine utilization rate, 70%), the average productivities were 33.04 m3/day, 38.47 m3/day, and 14.17 m3/day for RME-300T, Chuncheon tower-yarder, and FARMI, respectively. Our standardized cost comparison study also showed that the yarding cost was highest at 37,835 won/m3 with FARMI, followed byRME-300T at 25,105 won/m3 for the same work conditions. We found the lowest yarding cost with the Chuncheon tower-yarder at 20,520 won/m3 which was resulted primarily from high yarding productivity at theyarding distance (60 m). Our analysis suggested that a small machine such as FARMI could be a low-costyarding machine option for a cable yarding job with a short yarding distance (40 m or less). The Chuncheontower-yarder is well suited for a mid-range yarding distance job in Korea, ranged between 40 to 140 m. Ifyarding distance were longer than 140 m, the RME-300T tower yarder appears to be most cost-effective.

연구보문 : 식물환경 ; 폐가축사체의 농업적 재활용을 위한 가축사체 액상부산물의 액비화 조건 구명

서영진 ( Young Jin Seo ),서동철 ( Dong Cheol Seo ),강세원 ( Se Won Kang ),이상규 ( Sang Gyu Lee ),박주왕 ( Ju Wang Park ),최익원 ( Ik Won Choi ),성환후 ( Hwan Hoo Sung ),강석진 ( Seog Jin Kang ),조주식 ( Ju Sik Cho1 ) 한국환경농학회 2013 한국환경농학회지 Vol.32 No.4

가축사체 액상부산물을 이용하여 액비의 최적조건(미생물, pH, 미생물 주입량)을 조사하였고, 이들 최적 조건하에서 112일간 부숙하여 액비의 품질을 평가하였다. 가축사체 액상 부산물 액비 부숙시 최적 LP 미생물의 주입량은 0.5 mL/100mL이었으며, pH는 7 조건에서 각각 50점으로 완숙판정을 받았다. 최적조건하에서 112일 동안 부숙시킨 액비의 부숙도 는 부숙 후 28일에 50점을 받아 완숙판정을 받았으며, 부숙기 간이 길어짐에 따라 부숙 56일에는 온도가 60℃를 넘어 최고 점인 55점을 받았고, 이후 온도가 조금씩 낮아져 부숙 후 112 일에는 실온조건에 이르렀다. 완숙된 가축사체 액상부산물 액 비의 품질을 평가해본 결과, 최적조건하에서 부숙시킨 액비의 경우에는 T-N, P2O5 및 K2O의 함량이 28일에 가장 높았으며, 시간이 경과함에 따라 약간 감소하는 경향이었다. 또한, 유해성분(As, Cd, Cu, Cr, Hg, Ni, Pb 및 Zn)의 함량은 28일, 56일 및 112일 부숙시킨 액비에서 모두 비료공정규격 기 준치에 적합하였다. 이상의 결과를 미루어 볼 때 가축사체 액상부산물을 농업적 재활용을 위한 액비화 조건은 pH 7조건 에서 LP 미생물을 0.5 mL/100 mL 주입한 경우이다. 하지 만 본 연구에서 비교된 가축분뇨 발효액은 공시재료(가축사체)가 상이하여 향후 가축사체를 이용한 액비의 부숙도 기준이 개선되어야 할 것으로 판단된다. BACKGROUND: Globally, concern about emerging infectious diseases of livestock is growing. For the disposal of the animal carcass, it is necessary to recycle the carcass into an agriculturally usable product. The objective of this study was to investigate the composting conditions of liquid by-product obtained from degradation of animal carcass. METHODS AND RESULTS: Optimum conditions of liquid fertilizer were investigated using different microorganisms, pHs, and volumes of microorganisms (Lactobacillus rhamnosus + Pichia deserticola). Based on the results from the optimum conditions, compost maturity and quality of liquid fertilizer were evaluated for 112 days. The compost maturity of liquid fertilizer were higher in the order of LP(Lactobacillus rhamnosus + Pichia deserticola) > BC(Bacillus cereus) > BS (Bacillus subtilis). The optimum condition under different volumes of LP was injection of 0.5 mL/100 mL. The compost maturity under different pHs were higher in the order of pH 7 > 5 ≥ 9 ÷ 11. The liquid by-product at 56 days after composting was completely decomposed. The concentrations of T-N, T-P and K2O in liquid fertilizer at 56 days were 0.94, 0.17 and 3.78%, respectively, and the sum of those concentrations was 4.89%. CONCLUSION(S): Liquid fertilizer of by-product using pig carcass was decomposed with optimum conditions(LP, pH 7, injection of 0.5 mL/100 mL) in 56 days after composting, and was suitable for official standard of commercial fertilizer.

알레르기 ; 알레르기 환자에서 한방 이외의 대체 요법의 사용 현황에 대한 다기관 조사

이현정 ( Hyun Jung Lee ),이재현 ( Jae Hyun Lee ),이용원 ( Yong Won Lee ),김철우 ( Cheol Woo Kim ),동헌종 ( Hun Jong Dhong ),박해심 ( Hae Sim Park ),조영주 ( Young Joo Cho ),조진희 ( Jin Hee Cho ),조상헌 ( Sang Heon Cho ),편복양 ( 대한내과학회 2011 대한내과학회지 Vol.80 No.1

목적: 한국에서 알레르기 질환 치료를 위한 한방 치료뿐만 아니라 대체 요법이 많이 이용되고 있으며, 그 현황에 대하여 다기관 조사를 시행하였다. 방법: 10개의 대학병원 외래로 내원한 647명의 알레르기 환자를 대상으로 설문조사를 시행하였으며, 이 중 510명이 한방 이외의 대체 요법에 응답하였다. 이환되어 있는 알레르기 질환은 천식(50.0%), 알레르기 비염(36.0%), 아토피 피부염(36.0%), 그리고 두드러기(9.3%)였다. 각각 환자들에게 12 문항의 설문조사를 시행하였으며, 한방 이외의 대체 요법의 사용 빈도 및 종류, 대체 요법에 의지하게 된 이유, 비용, 그리고 치료효과에 대한 의견을 물어 보았다. 결과: 16.7%의 알레르기 환자에서 한방 이외의 다른 대체 요법을 받았으며, 평균 1.6종의 한방 이외의 대체 요법을 받았다. 가장 많이 의지하는 대체 요법은 민간 식이요법 (48.6%)이었고, 그 다음이 아로마 요법(23.8%), 지압(14.3%), 건강 호흡법(7.6%), 마인드 컨트롤(5.7%), 목욕요법(5.7%) 순이었다. 대체 요법을 받은 환자 중 마인드 컨트롤(50%), 식이요법(50%), 그리고 건강 호흡법(75%)의 경우 치료 효과가 만족스럽다는 응답이 높았으며, 목욕요법, 아로마 요법, 그리고 지압은 만족도가 각각 33.3%, 28.0%, 26.7%로 저조하였다. 대체 요법 사용자의 63.6%가 5회 미만의 대체 요법을 받았고, 91.8%가 1년 이내로 치료받았으며, 1인당 평균 연 37 만원을 지출하였다. 대체 요법을 선택한 가장 큰 이유는 체질이 개선될 수 있을까 해서(44.2%)였으며, 대체 요법이 몸에 부담이 없어서(31.4%), 면역기능이 강화되어서(22.9%) 순으로 나타났고, 15.7%는 양약치료가 도움이 되지 않아서 대체 요법을 선택하였다고 응답하였다. 결론: 한국에서 알레르기 환자의 상당수가 한방뿐만 아니라 여러 가지의 대체 요법을 사용하고 있음을 알 수 있었다. 대체 요법의 사용 빈도가 증가하고 그 종류가 다양함을 고려할 때, 의료진은 대체 요법의 현황에 대하여 정확히 인지하고 이에 대해 관심을 가지고 환자를 대하여야 하며 올바른 알레르기 질환 치료법에 대해 환자뿐만 아니라 의료인에게 교육하는 것이 필요하다. Background/Aims: The use of unproven complementary/alternative medicine (CAM) to treat allergies is popular in Korea. We conducted a multicenter survey of the current use of CAM other than herbal medication in Korean allergy patients. Methods: This study enrolled 510 adults with allergic diseases, including asthma, allergic rhinitis, atopic dermatitis, and chronic urticaria, from ten hospitals. They underwent a structured questionnaire interview and clinical assessment of the prevalence, motivation, costs, and subjective assessment of CAM. Results: Of the patients, 16.7% used at least one type of CAM to treat their allergic diseases. Common types of CAM were diet (48.6%), aroma therapy (23.8%), massage (14.3%), breathing exercises (7.6%), baths (5.7%), and mind control (5.7%). The therapeutic effects of CAM included improved in patients using mind control (50%), diet (50%), breathing exercises (75%), and baths (33.3%), but worse in patients using aroma therapy (28%), and massage (26.7%). About 36.4% of the patients used CAM more than four times per year, and the average cost per CAM user was 370,000 won/year. The main reason for trying CAM was `hope to improve my constitution`. Conclusions: CAM is used widely for treating allergic diseases in Korea. Detailed knowledge of CAM and patient education are important. Further studies of the clinical efficacy of CAM are needed. (Korean J Med 2011;80:68-77)

첨가물질의 급여가 홀스타인 거세우의 발육, 도체특성에 미치는 영향

Won Mo Cho(조원모),Sung Hak Yang(양승학),Sang Min Lee(이상민),Sun Sik Jang(장선식),Hyeong Cheol Kim(김형철),Seong Koo Hong(홍성구),Woon Yeoul Park(박웅렬),Hyun Soo Kim(김현수) 한국생명과학회 2012 생명과학회지 Vol.22 No.2

본 연구는 육질향상을 위한 여러가지 첨가물질을 홀스타인 거세우의 성장과 도체특성에 미치는 급여효과를 구명하기 위해 수행하였다. 생후 5개월령 평균체중 176.6 ㎏, 홀스타인 거세우 24두를 3처리 8반복으로 완전 임의 배치하여 사양시험을 수행하였다. 처리구는 대조구(무첨가구), T1 (Vitamin C, 아연 및 유황 급여구) 및 T2 (콜린 및 라이신 급여구)로 배치하였다. 일당증체량은 육성기와 비육전기에서는 처리구별 차이가 없었지만, 비육후기에서는 T1처리구가 T2 처리구보다 유의적으로 높았다(p<0.05). T1 처리구의 출하체중은 다른 처리구 보다 비교적 높았지만 유의적 차이는 없었다. 첨가제는 시험기간 동안 섭취량에 있어 영향을 주지는 않았지만, 비육후기 T1 처리구의 사료요구율이 T2 처리구 보다 유의적으로 낮았다. 육량특성에 있어 도체중 및 육량지수는 그룹간 비슷한 결과를 나타내었지만, 등지방 두께 및 등심단면적은 다른 처리구에 비해 T2 처리구가 비교적 낮았다. 육질특성에서는 육색, 조직감 및 성숙도는 세 처리구에서 유의적 차이를 나타내지 않았지만, 근내지방도 및 육질1등급이상 출현율에 있어서 T2 처리구와 비교하여 T1처리구가 높았다. 따라서, 본 연구의 결과 비타민 C, 아연, 유황 첨가는 홀스타인 거세우의 성장 및 도체특성을 향상시키는 것으로 생각된다. This study was performed to investigate the feeding effects of different additives on the growth performance and carcass characteristics of Holstein steers. Twenty-four Holstein steers, five months of age and 176.6 ㎏, were randomly allocated to three experimental groups of eight animals each for an 18-month feeding trial. The groups were control (not additive), T1 (fed zinc, vitamin C, and sulfur), and T2 (fed choline and lysine). The average daily gain was no different between the treatment groups during the growing to early fattening period, but it was significantly higher in the T1 group than the T2 group in the late fattening period (p<0.05). The final BW of the T1 group was relatively high in relation to the other groups, but was not significantly different. The additives had no effects on DMI during the experimental period; however, the feed conversion ratio of the T1 group in the late fattening period was significantly lower than that of the T2 group (p<0.05). The results of yield traits, carcass weight, and yield index were similar between groups, but back fat thickness and rib eye area were relatively lower in the T2 group than in the other groups. In terms of quality traits, meat color, texture, and maturity were not significantly different between the three groups. However, marbling score and appearance rate of high quality grade (1??, 1?, and 1) were higher in the T1 group compared with the T2 group. Thus, the present results suggest that vitamin C, zinc, and sulfur supplementation may improve the growth performance and carcass characteristics of Holstein steers.

Altered Nurr1 protein expression in the hippocampal CA1 region following transient global cerebral ischemia

Cheol Woo Park,Tae-Kyeong Lee,Bora Kim,Young Eun Park,Jae-Chul Park,Ji Hyeon Ahn,Joon Ha Park,Jeong Hwi Cho,Hyun-Jin Tae,Ki-Yeon Yoo,Choong-Hyun Lee,Jung Hoon Choi,Moo-Ho Won 한국실험동물학회 2019 한국실험동물학회 학술발표대회 논문집 Vol.2019 No.7

Korean Clinical Practice Guidelines for Aneurysmal Subarachnoid Hemorrhage

Cho, Won-Sang,Kim, Jeong Eun,Park, Sukh Que,Ko, Jun Kyeung,Kim, Dae-Won,Park, Jung Cheol,Yeon, Je Young,Chung, Seung Young,Chung, Joonho,Joo, Sung-Pil,Hwang, Gyojun,Kim, Deog Young,Chang, Won Hyuk,Cho The Korean Neurosurgical Society 2018 Journal of Korean neurosurgical society Vol.61 No.2

Despite advancements in treating ruptured cerebral aneurysms, an aneurysmal subarachnoid hemorrhage (aSAH) is still a grave cerebrovascular disease associated with a high rate of morbidity and mortality. Based on the literature published to date, world-wide academic and governmental committees have developed clinical practice guidelines (CPGs) to propose standards for disease management in order to achieve the best treatment outcomes for aSAHs. In 2013, the Korean Society of Cerebrovascular Surgeons issued a Korean version of the CPGs for aSAHs. The group researched all articles and major foreign CPGs published in English until December 2015 using several search engines. Based on these articles, levels of evidence and grades of recommendations were determined by our society as well as by other related Quality Control Committees from neurointervention, neurology and rehabilitation medicine. The Korean version of the CPGs for aSAHs includes risk factors, diagnosis, initial management, medical and surgical management to prevent rebleeding, management of delayed cerebral ischemia and vasospasm, treatment of hydrocephalus, treatment of medical complications and early rehabilitation. The CPGs are not the absolute standard but are the present reference as the evidence is still incomplete, each environment of clinical practice is different, and there is a high probability of variation in the current recommendations. The CPGs will be useful in the fields of clinical practice and research.

Non-selective rapid electro-oxidation of persistent, refractory VOCs in industrial wastewater using a highly catalytic and dimensionally stable IrPd/Ti composite electrode

Cho, Wan-Cheol,Poo, Kyung-Min,Mohamed, Hend Omar,Kim, Tae-Nam,Kim, Yul-Seong,Hwang, Moon Hyun,Jung, Do-Won,Chae, Kyu-Jung Elsevier 2018 CHEMOSPHERE - Vol.206 No.-

<P><B>Abstract</B></P> <P>Volatile organic compounds (VOCs) are highly toxic contaminants commonly dissolved in industrial wastewater. Therefore, treatment of VOC-containing wastewater requires a robust and rapid reaction because liquid VOCs can become volatile secondary pollutants. In this study, electro-oxidation with catalytic composite dimensionally stable anodes (DSAs)—a promising process for degrading organic pollutants—was applied to remove various VOCs (chloroform, benzene, toluene, and trichloroethylene). Excellent treatment efficiency of VOCs was demonstrated. To evaluate the VOC removal rate of each DSA, a titanium plate, a frequently used substratum, was coated with four different highly electrocatalytic composite materials (platinum group metals), Ir, IrPt, IrRu, and IrPd. Ir was used as a base catalyst to maintain the electrochemical stability of the anode. Current density and electrolyte concentration were evaluated over various ranges (20–45 mA/cm<SUP>2</SUP> and 0.01–0.15 mol/L as NaCl, respectively) to determine the optimum operating condition. Results indicated that chloroform was the most refractory VOC tested due to its robust chemical bond strength. Moreover, the optimum current density and electrolyte concentration were 25 mA/cm<SUP>2</SUP> and 0.05 M, respectively, representing the most cost-effective condition. Four DSAs were examined (Ir/Ti, IrPt/Ti, IrRu/Ti, and IrPd/Ti). The IrPd/Ti anode was the most suitable for treatment of VOCs presenting the highest chloroform removal performance of 78.8%, energy consumption of 0.38 kWh per unit mass (g) of oxidized chloroform, and the least volatilized fraction of 4.4%. IrPd/Ti was the most suitable anode material for VOC treatment because of its unique structure, high wettability, and high surface area.</P> <P><B>Highlights</B></P> <P> <UL> <LI> DSAs composite electrodes were investigated for electro-oxidation of VOCs. </LI> <LI> Both of VOCs' oxidization and volatilization were evaluated to maximum treatment. </LI> <LI> Energy consumption was calculated as a key-factor for electro-oxidation. </LI> <LI> IrPd/Ti achieved the highest removal efficiency compared to other electrodes. </LI> <LI> Current density and electrolyte concentration were adapted for proper operation. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Sensing properties of separative paper-based extended-gate ion-sensitive field-effect transistor for cost effective pH sensor applications

Cho, Won-Ju,Lim, Cheol-Min Elsevier 2018 Solid-state electronics Vol.140 No.-

<P><B>Abstract</B></P> <P>In this study, we developed a cost-effective ion-sensing field-effect transistor (FET) with an extended gate (EG) fabricated on a separative paper substrate. The pH sensing characteristics of the paper EG was compared with those of other EGs fabricated on silicon, glass, or polyimide substrates. The fabricated paper-based EGFET exhibited excellent sensitivity close to the Nernst response limit as well as to that of the other substrate-based EGFETs. In addition, we found that all EGFETs, regardless of the substrate, have similar non-ideal behavior, i.e., drift phenomenon and hysteresis width. To investigate the degradation and durability of the paper EG after prolonged use, aging-effect tests were carried out in terms of the hysteresis width and sensitivity over a course of 30 days. As a result, the paper EG maintained stable pH sensing characteristics after 30 days. Therefore, we expect that paper EGFETs can provide a cost-effective sensor platform.</P>

Plasmonic colloidal nanoparticles with open eccentric cavities via acid-induced chemical transformation

Cho, Won Joon,Jung, Alum,Han, Suenghoon,Lee, Sung-Min,Kang, Taewook,Lee, Kun-Hong,Choi, Kyung Cheol,Kim, Jin Kon Springer Science and Business Media LLC 2015 NPG Asia Materials Vol.7 No.-