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보리짚·계분 싸이레지에서 신속한 요산정량과 요산분해균의 선정
이상선,김춘수 ( Sang Sun Lee,C . S . Kim ) 한국축산학회 1978 한국축산학회지 Vol.20 No.1
Rapid determination of uric acid and isolation of strains decomposing uric acid were investigated in barley straw-poultry manure silage and in poultry litter. After extraction of uric acid by 0.5% Li₂ CO₃, at 60℃, the standard error by enzyme assay in silage and poultry manure was no more than 1% of total uric acid. When the silage was ensiled at 30℃, 95 to 96% of uric acid was decomposed after 60 days. The microorganism that decomposing the uric acid was isolated and identified as Bacillus spp. Its decomposition rate is 66% in artificial UDP medium.
DESIGN AND IMPLEMENTATION OF A UPNP-CAN GATEWAY FOR AUTOMOTIVE ENVIRONMENTS
H. S. SEO,B. C. KIM,P. S. PARK,C. D. LEE,이상선 한국자동차공학회 2013 International journal of automotive technology Vol.14 No.1
In this paper, we propose a universal plug and play (UPnP) - controller area network (CAN) gateway system using UPnP middleware for interoperability between external smart devices and an in-vehicle network. The proposed gateway consists of a UPnP communication device, a CAN communication device, and a device translator layer. In-vehicle devices are not usually IP-based, so we implemented an in-vehicle device manager in the UPnP communication device which is in the gateway. We developed a vehicle simulator to produce real vehicular data for performance analysis. The CAN communication device transmits and receives real-time vehicle data between the real vehicular simulator and external devices through the UPnP. The device translator layer configures a message frame for enabling seamless data input and output between the CAN and UPnP protocols. After implementation, we generated an internal-external service request and tested the result. Finally, we confirmed the service request and operation between external devices and the internal vehicular device. Additionally, for a variety of external device numbers and communication environments, we demonstrated the gateway performance by measuring the round trip time (RTT) for overall service implementation.