http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 전지형(Ji-Hyeong Jeon) (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
고농도 질소함유폐수의 경제적 처리를 위한 단축질소공정 파일럿플랜트 실증화 및 운영 결과
이재명(Jae Myung Lee),전지형(Ji-hyeong Jeon),최홍복(Hong-bok Choi) 유기성자원학회 2020 유기물자원화 Vol.28 No.1
A 2㎥/d combined wastewater treatment pilot plant containing the multi-stage vertical stacking type nitrification reactor was installed and operated for more than 1 year under the operating conditions of the short-circuit nitrogen process (pH 8, DO 1mg/L and Internal return rate 4Q from nitrification to denitrification reactor). For economically the combination treatment of food wastewater and the leachate from a landfill, the optimal combination ratio was operated by adjusting the food wastewater with the minimum oil content to 5-25% of the total throughput. The main treatment efficiency of the three-phase centrifugal separator which was introduced to effectively separate solids and oil from the food wastewater was about 52% of SS from 116,000mg/L to 55,700mg/L, and about 48% of normal hexane (NH) from 53,200mg to 27,800 mg/L. During the operational period, the average removal efficiency in the combined wastewater treatment process of BOD was 99.3%, CODcr 94.2%, CODmn 90%, SS 70.1%, T-N 85.8%, and T-P 99.2%. The average concentrations of BOD, CODcr, T-N, and T-P of the treated water were all satisfied with the discharge quality standard for landfill leachate ( Na region), and SS was satisfied after applying the membrane process. On-site leachate had a relatively high nitrite nitrogen content in the combined wastewater due to intermittent aeration of the equalization tanks and different monthly discharges. Nevertheless nitrite nitrogen was accumulated, denitrification from nitrite nitrogen was observed rather than denitrification after complete nitrification. The average input of anti-forming chemical during the operation period is about 2L/d, which seems to be economical compared to the input of methanol required to treat the same wastewater. 다단수직형 적층 방식의 질산화조가 포함된 2㎥/d 병합폐수처리 파일럿플랜트를 설치하여, pH8 이상, DO 1mg/L, 내부반송율 4Q이상의 단축질소제거공정의 질산화조 운전 조건으로 약 1년 이상 운영하였다. 음폐수와 침출수의 경제적인 병합 처리를 위하여, 유분이 최소화된 음폐수를 전체 처리량의 5~25%로 조절하여 최적의 병합 비율을 검토하였다. 음폐수의 고형물과 유분을 효과적으로 분리하기 위하여 도입된 3상원심분리기의 주요 처리 효율은 SS는 116,000mg/L에서 55,700mg/L로 약 52% 제거 되었으며, 노르말헥산(N-H)의 농도는 53,200mg/L에서 27,800mg/L로 약 48%로 제거되었다. 운전 기간 중 병합 폐수처리 공정의 BOD 평균 제거 효율은 99.3%, CODcr 94.2%, CODmn 90%, SS 70.1%, T-N 85.8%, T-P 99.2%로 분석되었다. 처리수의 BOD, CODcr, T-N, T-P 평균 농도는 침출수 배출허용 기준( 나 지역)을 만족하였으며, SS는 멤브레인조를 적용한 후 만족하였다. 현장의 침출수는 유량조정조의 간헐적 폭기 및 월별 상이한 방출량의 영향으로 병합폐수 중 아질산성 질소의 성분이 비교적 높았다. 아질산성 질소가 축적된 상태에서도 완전질산화 후 탈질보다는, 아질산성 질소에서 탈질되는 결과가 나타났다. 또한 운전 기간 중 평균 소포제 투입량은 약 2L/d으로 같은 폐수를 처리할 시 필요한 메탄올 투입량 약 2.8L/d 대비하여 경제적인 것으로 보인다.
-
뒤통수밑근 근막이완기법이 전방머리자세 환자의 머리척추각과 상부 목 굽힘 각도에 미치는 영향
장예은(Ye-Eun Jang),전지형(Ji-Hyeong Jeon),문성욱(Seong-Wook Moon),서해니(Hae-Ni Seo),유일영(Il-Young Yu) 한국임상움직임치료학회 2023 한국임상움직임치료학회지 Vol.3 No.2
Background Forward head posture (FHP) is a representative disease of modern society, and it is closely related to the suboccipital muscle. However, there is little study that suboccipital myofascial release af-fect on the cranio-vertebral angle (CVA) and upper cervical flexion angle. Objectives The purpose of this study is to investigate the immediate effect of suboccipital myofascial release on the CVA and upper cervical flexion angle in patients with FHP Methods The subjects were 19 patients with FHP. The CVA and upper cervical flexion angle were measured before and after applying a 15-minute myofascial release to the suboccipital muscles. The CVA and upper cervical flexion angle were assessed using the Kinovea program. The difference before and after myofascial release was analyzed using a paired t-test. Results As a result of applying myofascial release on suboccipital muscles for 15 minutes to patients with a forward heard posture, there was a significant increase in the CVA and the upper cervical flexion angle (p < 0.05). Conclusions Myofascial release on suboccipital muscles is an effective treatment method for improv-ing FHP and restoring upper cervical movement in patients with FHP.
-
KCI연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
