• 한국응급구조학회지
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• 제25권1호
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• pp.23-36
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• 2021

Purpose: The purpose of this study was to determine how the use of level D personal protective equipment (PPE) and cardiopulmonary resuscitation (CPR) feedback equipment affects chest compression (CC). Furthermore, this study provides basic data for developing Korean CPR guidelines that can be applied to patients with suspected or confirmed COVID-19. Methods: This randomized, single-blinded, crossover simulation trial included 26 student paramedics who performed 2-minute chest compressions using three different methods: Method A involved performing traditional CC for two minutes without donning level D PPE, Method B involved performing CC while donning level D PPE, and Method C involved performing CC with a CPR feedback device while donning level D PPE. Results: The use of a CPR feedback device during the 2-minute CC increased the exercise intensity of the subjects, but donning level D PPE didn't affect the quality of CC and the exercise intensity. The results of methods A and B showed changes in the quality of compression 80 seconds after the start of CC. No significant changes occurred in 2-minute CC when using the CPR feedback device. Conclusion: Using a CPR feedback device could prevent deterioration in the quality of CC while donning level D PPE.

• 한국식품조리과학회지
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• 제23권2호통권98호
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• pp.252-260
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• 2007

This study was performed to provide basic data for the operation of the sous vide cook-chill system(SVCC) by comparing and evaluating the quality of SVCC prepared foods to those prepared using the cook-chill system(CC). Foremost, the microbial risk was less and the food quality excellent when SVCC was used compared to CC, where changes in pH, Aw and moisture loss were less with SVCC. The CC and SVCC Aw value were 0.93 and 0.92 and 0.92 and 0.95 at 0 days and 15 days, respectively. Secondly, the microbial quality by storage days was relatively high with SVCC. The CC and SVCC viable cell and coliform counts were 4.43 and 4.37 LogCFU/g, and 4.53 and 3.60 LogCFU/g, respectively, by 15 days. Also, after reheating, the viable cell and coliform counts satisfide the standards applied in processed food(5.0 and 2.0 LogCFU/g respectively). Lastly, the sensory scores for SVCC were higher than those for CC. Thus, microbial and sensory qualities by days of storage were acceptable and overall quality satisfaction was better for SVCC than CC.

• 대한방사선기술학회지:방사선기술과학
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• 제35권3호
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• pp.265-273
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• 2012

선형가속기를 기반으로 하는 세기조절방사선치료와 정위적방사선수술에서는 치료계획시스템의 소조사면에 대한 신뢰할만한 선량분포를 계산하기 위해서는 우선적으로 소조사면의 정확한 빔 자료 측정이 선행되어야 한다. 특히 소조사면의 빔 자료 측정에서 조사면 가장자리에서의 급격한 선량 변화, 측면 전자비평형, 그리고 검출기의 체적 영향으로 인한 적절한 검출기 선택이 중요하다. 따라서 본 연구에서는 선형가속기의 소조사면에 대한 빔 자료 측정에 있어서 검출기의 선량 특성을 알아보고자 하였다. 검출기는 0.01 cc 부피와 0.13 cc 부피의 이온전리함과 정위적다이오드를 사용하였으며, 빔 자료는 광자선(6 MV와 15 MV)에 대하여 조사면 크기를 $2{\times}2cm^2$에서 $5{\times}5cm^2$까지 변화시켜 각 검출기를 이용하여 깊이선량백분율, 선량출력계수, 그리고 빔측면도를 측정하였다. CC01 이온전리함과 정위적다이오드 검출기를 이용한 $PDD_{20}/PDD_{10}$은 $2{\times}2cm^2$ 조사면의 경우 6 MV와 15 MV에서 각각 1.02%와 0.12% 차이를 보였다. $3{\times}3cm^2$ 이상의 조사면에서는 각 검출기를 이용하여 얻어진 $PDD_{20}/PDD_{10}$의 차이가 6 MV와 15 MV에서 각각 평균 1.15%와 0.71% 이였다. CC01 이온전리함과 정위적다이오드 검출기를 이용한 선량출력계수 측정 결과, $2{\times}2cm^2$ 조사면의 경우 6 MV와 15 MV에서 0.5%와 1.5%이내에서 일치하였다. $3{\times}3cm^2$ 이상의 조사면에서는 각 검출기의 차이가 0.5% 이내이였다. 3개의 깊이에서 측정된 빔측면도의 반음영은 정위적다이오드 검출기의 경우 6 MV와 15 MV에서 각각 평균 2.7 mm와 3.5 mm, CC01 이온전리함의 경우 각각 평균 3.4 mm와 4.3 mm, CC13 이온전리함의 경우 각각 평균 5.2 mm와 6.1 mm이였다. 이를 통해 깊이선량백분율과 선량출력계수 측정 시 $2{\times}2cm^2$ 조사면에서는 CC01 이온전리함과 정위적다이오드 검출기를 $3{\times}3cm^2$에서 $5{\times}5cm^2$ 조사면에서는 각 검출기의 사용이 가능할 것으로 판단된다. 또한 소조사면에 대한 정확한 빔측면도의 반음영을 측정하기 위해서는 유효체적이 작은 CC01 이온전리함과 정위적다이오드 검출기 사용하는 것이 타당하겠다.

• Asian Pacific Journal of Cancer Prevention
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• 제17권7호
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• pp.3265-3269
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• 2016

Background: Around half of input data in the global burden of disease cancer collaboration (GBD-CC) and GLOBOCAN projects come from low quality sources, mainly from developing countries. This may lead to loss of precision in estimates. Our question was: Are the absolute values and trends of the GBD-CC and GLOBOCAN estimates for lung cancer (LC) in Iran consistent with available statistics?. Materials and Methods: Incidence and mortality statistics were extracted from national reports (N.IRs & N.MRs) and GBD-CC (GBD-incidence & mortality) and GLOBOCAN databases for 1990-2013 where available. Trends were analyzed and absolute values and annual percentage changes (APCs) were estimated and compared. Incompleteness of case ascertainment at the Iranian national cancer registry and Iranian national civil registration was assessed for better understanding. Results: Trends of N.IRs were significantly rising for males (APC: 19.4; 95% CI: 12.5-26.7) and females (23.2; 16.0-30.8). Trends of GBD-incidence were stable for males (-0.2; -1.5-1.1) and females (-1.0; -2.3-0.4). Absolute N.IRs were less than GBD-incidence steadily except for 2009. Trend of N.MRs was increasing up to 2004, but stable thereafter. Trends of GBD-mortality were also stable. Absolute N.MRs were less than GBD-mortality for years up to 2003 and more than GBD-mortality since 2005. The estimates of GLOBOCAN were more than N.IRs and N.MRs. Conclusions: The GBD-CC and GLOBOCAN values for LC in Iran are underestimates. Generation of data quality indices to present along with country specific estimates is highly recommended.

• Asian-Australasian Journal of Animal Sciences
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• 제20권2호
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• pp.237-244
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• 2007

An experiment was conducted to study the growth performance, bone mineralization and mineral excretion in broiler starter chicks fed high levels of cholecalciferol (CC) at sub-optimal levels of calcium (Ca) and non-phytate phosphorus (NPP). Five hundred and sixty day-old Vencobb female broiler chicks were housed in raised wire floor stainless steel battery brooder pens ($24"{\times}30"{\times}18"$) at the rate of five chicks per pen. A maize-soyabean meal basal diet was supplemented with dicalcium phosphate, oyster shell powder and synthetic CC to arrive at two levels each of Ca (0.50 and 0.60%), and NPP (0.25 and 0.30%) and four levels of CC (200, 1,200, 2,400 and 3,600 ICU/kg) in a $2{\times}3{\times}4$ factorial design. Each diet was fed ad libitum to chicks in 7 pens from 2 to 21days of age. Body weight gain, feed intake and bone weight increased (p<0.05) with increase in level of CC at both the Ca and NPP levels tested. The CC levels required to obtain significant improvement in body weight gain and feed intake reduced (2,400 ICU/kg vs. 1,200 ICU/kg) with increase in levels of P in diet (0.25% vs. 0.3%, respectively). The feed conversion ratio was significantly improved (p<0.05) with increase in level of CC from 200 to 1,200 ICU/kg diet at 0.5% Ca, while at 0.6% Ca, the level of CC in diet did not influence the feed efficiency. Tibia mineralization (density, breaking strength and ash content) and Ca and P contents in serum increased significantly (p<0.05) with increase in levels of CC in diet. The CC effect on these parameters was more pronounced at lower levels of Ca and NPP (0.5 and 0.25%, respectively). The data on body weight gain and feed intake indicated that NPP level in diet can be reduced from 0.30 to 0.25% by increasing CC from 200 to 2,400 ICU/kg. Similarly, the bone mineralization (tibia weight, density and ash content) increased non-linearly (p<0.01) with increase in CC levels in diet. Concentrations of P and Mn in excreta decreased (p<0.01), by increasing CC level from 200 to 2,400 ICU/kg diet. It can be concluded that dietary levels of Ca and NPP could be reduced to 0.50 and 0.25%, respectively by enhancing the levels of cholecalciferol from 200 to 2,400 ICU/kg with out affecting body weight gain, feed efficiency and bone mineralization. Additionally, phosphorus and manganese excretion decreased with increase in levels of CC in broiler diet.

• The Korean Journal of Physiology and Pharmacology
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• 제20권3호
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• pp.297-304
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• 2016

Klotho functions as a tumor suppressor predominantly expressed in renal tubular cells, the origin of clear cell renal cell carcinoma (ccRCC). Altered expression and/or activity of growth factor receptor have been implicated in ccRCC development. Although Klotho suppresses a tumor progression through growth factor receptor signaling including insulin-like growth factor-1 receptor (IGF-1R), the role of Klotho acting on IGF-1R in ccRCC and its clinical relevance remains obscure. Here, we show that Klotho is favorable prognostic factor for ccRCC and exerts tumor suppressive role for ccRCC through inhibiting IGF-1R signaling. Our data shows the following key findings. First, in tumor tissues, the level of Klotho and IGF-1R expression are low or high, respectively, compared to that of adjacent non-neoplastic parenchyma. Second, the Klotho expression is clearly low in higher grade of ccRCC and is closely associated with clinical outcomes in tumor progression. Third, Klotho suppresses IGF-1-stimulated cell proliferation and migration by inhibiting PI3K/Akt pathway. These results provide compelling evidence supporting that Klotho acting on IGF-1R signaling functions as tumor suppressor in ccRCC and suggest that Klotho is a potential carcinostatis substance for ccRCC.

• 한국식품조리과학회지
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• 제23권2호통권98호
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• pp.261-269
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• 2007

This study was performed to provide basic data for the sous vide cook-chill(SVCC) System by comparing and evaluating food quality, according to preparation method and days of storage, of foods that were prepared by SVCC to those prepared using the cook-chill(CC) System. Boiled quail eggs and fish paste in soy sauce were prepared using CC and SVCC and their quality was evaluated at the time of preparation and by days of storage. Viable cell counts were increased to 5.65(CC) and 3.40(SVCC) LogCFU/g by 15 days(p<.0001) and increased more over time in foods prepared with CC than with SVCC. For the CC method, Coliform counts increased to 4.58 LogCFU/g by 15 days(p<.0001). With SVCC, colirorms were not detected at 0 days, but counts reached 3.70 LogCFU/g by 15 days(p<.0001). After reheating, no coliforms were detected for CC or SVCC at 0 days, however, by 15 days, coliform counts reached 3.61 and 2.52 LogCFU/g(p<.0001) for CC and SVCC, respectively. Finally, the sensory scores of SVCC were higher than those of CC.

• 한국음향학회지
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• 제41권3호
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• pp.351-358
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• 2022

심층 생성 모델의 일종인 Generative Adversarial Network(GAN)과 Variational AutoEncoder(VAE)는 비병렬 학습 데이터를 사용한 음성 변환에 새로운 방법론을 제시하고 있다. 특히, Conditional Cycle-Consistent Generative Adversarial Network(CC-GAN)과 Cycle-Consistent Variational AutoEncoder(CycleVAE)는 다수 화자 사이의 음성 변환에 우수한 성능을 보이고 있다. 그러나, CC-GAN과 CycleVAE는 비교적 적은 수의 화자를 대상으로 연구가 진행되어왔다. 본 논문에서는 100 명의 한국어 화자 데이터를 사용하여 CC-GAN과 CycleVAE의 음성 변환 성능과 확장 가능성을 실험적으로 분석하였다. 실험 결과 소규모 화자의 경우 CC-GAN이 Mel-Cepstral Distortion(MCD) 기준으로 4.5 % 우수한 성능을 보이지만 대규모 화자의 경우 CycleVAE가 제한된 학습 시간 안에 12.7 % 우수한 성능을 보였다.

• 융합신호처리학회 학술대회논문집
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• 한국신호처리시스템학회 2005년도 추계학술대회 논문집
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• pp.343-346
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• 2005

유비쿼터스 시대의 도래로 인해 많은 IT업체는 유비쿼터스 핵심기술을 기반으로 발전하고 있다. 이러한 유비쿼터스 핵심기술의 상당부분은 무선통신기술 RF를 이용한 것이며 이를 활용하여 RFID 시스템 및 Ubiquitous Sensor Network 등을 구축할 수 있다. 본 논문에서는 이에 적합한 400/800MHz ISM/SRD 밴드대역을 사용하는 무선 트렌시버 단일 칩인 CC1020을 이용하여 하드웨어를 구성 하였다. CC1020칩을 사용하면 저전력, 고감도, 적은 주변회로 구성 등 많은 이점이 있으며 주파수원 고정과 필터링 및 전원공급상태 그리고 PC와의 interface등의 하드웨어를 쉽게 구현할 수 있다. 따라서 이러한 각 주변회로 구성에 대해 설명하고 실제 구현을 통해 DATA의 송수신실험을 통해 하드웨어의 특성을 확인 하였다.

• 한국초전도ㆍ저온공학회논문지
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• 제20권4호
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• pp.31-35
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• 2018

When REBCO coated conductors (CCs) are applied to superconducting devices such as coils and magnets, they are subjected to deformation in various modes such as compression/tension bending, uniaxial/transverse tension and torsion. Despite outstanding performances by REBCO CC tapes, their electromechanical properties have been evaluated primarily under uniaxial tension, therefore data about the critical current ($I_c$) response in the compressive strain region are lacking. In this study, the characteristic responses of $I_c$ in REBCO CC tapes under bending strains in the range from tensile to compressive were evaluated. The springboard bending beam was used, wherein the CC tape sample was soldered onto the surface of the springboard. A Goldacker-type bending test rig, which lacks a support holding the sample during testing, was used as a comparator. Degradation in $I_c$ behaviors, including strain sensitivity, in differently processed REBCO CC tapes were examined based on the test rig used.