This study investigated how adding nanoparticles to cocklebur biodiesel affected a 4-stroke compression ignition (CI) engine. The biodiesel was mixed with titanium oxide nanoparticles at concentrations of 4 ppm in each blend. Engine performance characteristics were examined including consumed gas heat, brake thermal efficiency (BTE), and brake specific fuel consumption (BSFC). The tests were conducted under a variety of loads and speeds, and the outcomes were compared to those from tests using only pure diesel and only pure biodiesel. According to the findings, adding nanoparticles to the biodiesel enhanced engine performance, with the highest gains being shown at B36F4 content. At 75 % and 100 % load, the BSFC was reduced by 6.8 % and 7.6 %, respectively. When compared to pure biodiesel, the brake thermal efficiency increased by 6.7 % and 8.8 %. The temperature of the exhaust gas decreased as the concentration of nanoparticles increased. The performance of the 4-stroke CI engine was improved when nanoparticles were added to cocklebur biodiesel making it a competitive alternative to traditional diesel fuel.

화학합성 농약을 대체하기 위한 친환경 방제법 개발을 위해 1, 2, 4%의 도꼬마리 열매 수용성 추출물을 이용하여 팥바구미 살충력을 실험하였다. 실험한 추출 농도에서 곤충 치사율, 기피성, 산란율과 성충 우화 및 팥의 피해 억제에 효과를 보여 주었다. 4%의 추출물은 처리 후 2일 후에26%의 치사율과 처리 후 3시간에 53.3%의 기피율을 각각 보였다. 또한 4%의 추출물을 팥과 섞었을 때 가장 낮은 산란율(113.7/암컷)과, 성충 우화율이 가장 많이 억제(37.0%)되었고 종자 손상을 가장 적게(42.3%) 받았다. 이러한 결과는 도꼬마리 추출물이 저장곡물을 팥바구미로부터 보호하는 종합적 방제수단으로 사용될 수 있다.