http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
IoT를 활용한 아쿠아포닉스 pH농도 모니터링 시스템 구현
서정권(Jeong-gwon Seo),채규성(Gyu-seong Chae),박규정(Gyu-Jeong Park),이형준(Hyeong-jun Lee),소재현(Jae-hyeon So),박기태(Gi-Tae Park),김대경(Dae-Kyong Kim) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.11
본 논문은 IoT를 활용한 아쿠아포닉스 설계방법을 포함한다. 최근 기후변화로 인하여 물 소비량이 적고 화학물질을 사용하지 않는 친환경적인 농법으로 아쿠아포닉스에 대한 관심이 늘어났다. 각종 센서를 통해 아쿠아포닉스 환경 변수를 측정하고 MCU와 통신 및 제어 모듈을 이용하여 자동제어 및 모니터링 시스템을 설계하였고 실제 실험을 통해 pH 값이 모니터링 되는 것을 확인하였다.
일평균기온 특성에 따른 통일한국의 지역별 벼 생육기간 분포
최돈향 ( Choe Don Hyang ),김보경 ( Kim Bo Gyeong ),신문식 ( Sin Mun Sig ),남정권 ( Nam Jeong Gwon ),정진일 ( Jeong Jin Il ),김기영 ( Kim Gi Yeong ),오명규 ( O Myeong Gyu ),하기용 ( Ha Gi Yong ),고재권 ( Go Jae Gwon ),이재길 ( Lee 한국농림기상학회 2003 한국농림기상학회지 Vol.5 No.3
N/A This study was conducted to examine rice growth duration by analyzing agricultural climatic conditions at different latitudes in unified Korea. The climatic conditions of nine sites from Wunggi (latitude 42N) to Jeju (latitude 31N) were examined in this study. The rice growth duration of various cropping patterns was determined by analyzing consecutive days when effective daily mean air temperature was suitable for rice growth from the first seeding date to the last maturing date. The rice growth duration in Wunggi located in North Korea was available 138 days for machine transplanting, 115 days for direct seeding on dry paddy cultivation, and 97 days for direct seeding on a flooded surface with cultivation after seeding. On the other hand, the rice growth duration in Kwangju (latitude 35N) located in South Korea was 195 days for machine transplanting, 180 days for direct seeding on dry paddy cultivation, and 170 days for direct seeding on a flooded surface cultivation after seeding.
Jeong-Heon Choi,Shin Hwang,Young-Joo Lee,Ki-Hun Kim,Gi-Young Ko,Dong Il Gwon,Chul-Soo Ahn,Deok-Bog Moon,Tae-Yong Ha,Gi-Won Song,Dong-Hwan Jung,Sung-Gyu Lee 한국간담췌외과학회 2015 한국간담췌외과학회지 Vol.19 No.2
Backgrounds/Aims: Both preoperative transcatheter arterial chemoembolization (TACE) alone and portal vein embolization (PVE) alone have a detrimental prognostic effect on the post-resection outcomes in patients with hepatocellular carcinoma (HCC). The main objective of this study was to assess the prognostic impact of preoperative TACE on the long-term survival outcomes in patients undergoing preoperative PVE and right liver resection for solitary HCC. Methods: Patients who underwent macroscopic curative right liver resection of solitary HCC that lied between 3.0 and 7.0 cm (n=113) with or without preoperative TACE and PVE were selected for the study, making these subjects were divided into three groups; the TACE-PVE group (n=27), the PVE-alone group (n=13), and the control group (n=73). The subjects in the three groups were followed up for ≥36 months or until death. Results: The 1-, 3-, 5-, and 10-year overall patient survival rates of all 113 patients were 96.5%, 88.2%, 81.3% and 65.0%, respectively. The 1-, 3-, 5-, and 10-year overall patient survival rates were 96.3%, 83.4%, 83.4% and 47.6% respectively in the TACE-PVE group; 84.6%, 76.9%, 57.7% and 19.2% respectively in the PVE-alone group; and 98.6%, 91.7%, 85.1% and 81.7% respectively in the control group (p=0.047). Patients were also sub-grouped according to tumor size, and those with a tumor of up to cutoff at 5 cm showed no prognostic difference (p=0.774), but tumor size >5 cm was associated with inferior patient survival only in the TACE-PVE group (p=0.018). Conclusions: Preoperative sequential TACE and PVE appear to be compliant to the conventional oncological concept in addition to induction of the future remnant liver regeneration. Therefore, we suggest that preoperative TACE should be come first whenever preoperative PVE for major hepatectomy is planned, especially in patients with hypervascular HCC tumors.
전자빔 조사에 의한 PV-Module의 전압-전류 특성
윤정필(Jeong-Phil Yoon),이기제(Gi-Jae Lee),강병복(Byong-Bok Gang),차인수(In-Su Cha),강기환(Gi-Hwan Gang),정명웅(Myung-Woong Jung),유권종(Gwon-Jong Yu) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.7
Exhaustion and environmental problem are big problem of 21th century is flint energy and the importance of energy to alternate flint energy as being risen is embossed more. Photovoltaic system is occupying big flow along with wind force development among is many substitute energy has shortcoming that energy conversion efficiency falls behind than another thing substitute energy.<br/> This research investigates electron beam to specification energy to Module that was generalized and schematized difference of curved line after existing V-I efficiency characteristic curve and irradiation. And will analyze cause of Module's efficiency addition and subtraction by electron beam investigation.