http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
흉추부 황색인대 골화증 : 환자 16예의 임상적 분석 A Clinical Analysis of 16 Cases
현명훈,김남규,백광흠,신형식,김재민,고용,오성훈,오석전,김광명 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.8
The authors are reporting 16 cases of ossification of the thoracic ligamentum flavum. Thoracic ossified ligamentum flavum cause myelopathy as a result of pressure on the spinal cord and nerve roots The prominent sysmptoms were numbness of the foot or leg motor weakness sphincter disturbance and exaggerated tendon reflexes The male to female ratio was 13:8 and the 5th decade was the most prevalent age group. The predominant regions involved were T9-T10 and T10-T11 Total laminectomy was performed in all patients and the prognosis was good in most cases. The thoracic ossified ligamentum flavum and neurologic disorders due to compression of the thoracic vertebrae by other diseases do not show much of a difference in terms of symptoms In the past due to the lack of knowledge of this disease treatment was performed inapproapriately However at the present with the improvement of CT and MRI and the increased recognition of this disease we believe that good prognosis can be made if appropriate treatment is delivered at the time of diagnosis
문수영,김은영,현명훈 한국막학회 2023 멤브레인 Vol.33 No.6
화학 반응의 수율 향상을 위해 부산물을 제거하는 다양한 방법이 연구되고 있다. 특히 산업적으로 중요한 반응에서 주로 부산물로 물이 생성되기 때문에 넓은 범위의 온도에서 안정적으로 물을 분리하는 기술이 필요하다. 흡수제의 사용,탈수 반응의 도입 등 다양한 방법이 제안되었으나 추가적인 에너지 및 시간 소요, 전환율의 지속 가능성 등의 문제로 한계를가지고 있다. 그에 반해 운전 및 설치가 용이하고, 낮은 유지비용 등의 장점을 가지고 있는 분리막 기술은 다양한 촉매 반응에 도입되었을 때 안정적으로 부산물을 제거할 수 있어 반응의 효율을 향상시킬 수 있는 좋은 방안이다. 따라서 본 총설에서는 분리막을 이용한 부산물 제거 및 이를 통한 효과에 대해 논의하였다. Various methods for removing by-products from chemical reactions are being studied to improve yield of catalyticreaction. Since the water is predominantly generated as a by-product in industrially significant reactions, it is necessaryto develop the technology that can reliably remove water over a wide range of temperatures. Although several strategiesusing absorbents and additional dehydration reactions, have been proposed, they have limitations due to the issues suchas additional energy and time consuming steps and sustainability of conversion. Membrane technology, which offers advantagessuch as easy operation, installation, and low maintenance costs, proves to be a promising approach for enhancing theefficiency of catalysts in various catalytic reactions. Therefore, this review discusses the removal of by-products using membranesand the associated benefits in this context.