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Study on the detection behavior of defect-rich single-walled carbon nanotubes toward perchlorate
Chen, Yi,Nguyen, Thuy Hang,Zhang, Shao Lin,Zhang, Z.,Yue, Hongyan,Jian, Jiawen,Yang, Woo-Chul World Scientific Publishing Company 2018 Functional materials letters Vol.11 No.2
<P>Defect-rich single-walled carbon nanotubes (SWCNTs) were prepared by a water vapor flow-assisted chemical vapor deposition process. The correlation between defect density and water flow was quantitively studied using Raman spectrum. The detection capabilities of defective SWCNTs films toward perchlorate anions were investigated. It was found the defect-rich SWCNTs could adsorb more perchlorate anions owing to the strong chemical bonding between anions and defective sites. However, the detective response of defective SWCNTs toward perchlorate was not in compliance with anion adsorption. A tradeoff phenomenon between response and adsorption was found as the defect density of SWCNTs increased. This work is expected to provide a guidance to the future design of SWCNTs based ion detector.</P>
Wu Pang Hung,Kim Hyeun Sung,Grasso Giovanni,An Jin Woo,Kim Myeonghun,Lee Inkyung,Park Jong Seon,Lee Jun Hyoung,Kang Sangsoo,Lee Jeongshik,Yi Yeonjin,Lee Jun Hyung,Park Jun Hwan,Lim Jae Hyeon,Jang Il-T 대한척추외과학회 2023 Asian Spine Journal Vol.17 No.1
tudy Design: Retrospective cohort study. Purpose: To evaluate the clinical and radiological effects of epidural fluid hematoma in the medium term after lumbar endoscopic decompression. Overview of Literature: There is limited literature comparing the effect of postoperative epidural fluid hematoma after uniportal endoscopic decompression. Methods: Magnetic resonance imaging (MRI) and clinical evaluation were performed for patients with single-level uniportal endoscopic lumbar decompression with a minimum follow-up of 2 years. Results: A total of 126 patients were recruited with a minimum follow-up of 26 months. The incidence of epidural fluid hematoma was 27%. Postoperative MRI revealed a significant improvement in the postoperative dura sac area at postoperative day 1 and at the upper endplate at 6 months in the hematoma cohort (39.69±15.72 and 26.89±16.58 mm2) as compared with the nonhematoma cohort (48.92±21.36 and 35.1±20.44 mm2), respectively (p<0.05); and at the lower endplate on postoperative 1 day in the hematoma cohort (51.18±24.69 mm2) compared to the nonhematoma cohort (63.91±27.92 mm2) (p<0.05). No significant difference was observed in the dura sac area at postoperative 1 year in both cohorts. The hematoma cohort had statistically significant higher postoperative 1-week Visual Analog Scale (VAS; 3.32±0.68) pain and Oswestry Disability Index (ODI; 32.65±5.56) scores than the nonhematoma cohort (2.99±0.50 and 30.02±4.84, respectively; p<0.05). No significant difference was found at the final follow-up VAS, ODI, and MRI dura sac area. Conclusions: Epidural fluid hematoma is a common early postoperative MRI finding in lumbar endoscopic unilateral laminotomy with bilateral decompression. Conservative management is the preferred treatment option for patients who do not have a neurological deficit. Symptoms last only a few days and are self-limiting. A common endpoint is a remodeled fluid hematoma and the subsequent expansion of the dura sac area.
Wu Pang Hung,Kim Hyeun Sung,An Jin Woo,Kim Myeonghun,Lee Inkyung,Park Jong Seon,Lee Jun Hyoung,Kang Sangsoo,Lee Jeongshik,Yi Yeonjin,Lee Jun Hyung,Park Jun Hwan,Lim Jae Hyeon,Jang Il-Tae 대한척추외과학회 2023 Asian Spine Journal Vol.17 No.2
Study Design: Retrospective cohort study.Purpose: Postoperative evaluation of the cross-sectional area of paraspinal muscle and clinical findings in patients who had interlaminar route uniportal full endoscopic posterolateral transforaminal lumbar interbody fusion (EPTLIF) after 2 years. Overview of Literature: There are limited short-term follow-up studies on efficacy, safety, and physiological changes with a 2-year follow-up. There is no study on paraspinal muscle cross-sectional area change in patients who had undergone uniportal EPTLIF.Methods: We evaluated patients who underwent EPTLIF with a minimum 24-month follow-up. Clinical parameters of the Visual Analog Scale (VAS) and Oswestry Disability Index (ODI) were measured at the preoperative, 1-week postoperative mark, postoperative 3-month mark, and final follow-up. Preoperative and 1-year postoperative magnetic resonance imaging measurement of preoperative and postoperative Kjaer grade, right and left psoas muscle mass area, and right and left paraspinal muscle mass area was performed.Results: EPTLIF with a minimum 24-month follow-up of 35 levels was included. The complication rate was 6%, and the mean Bridwell’s fusion grade was 1.37 (1–2). There was statistically significant improvement at 1 week, 3 months, and 2 years in VAS (4.11±1.23, 4.94±1.30, and 5.46±1.29) and in ODI (40.34±10.06, 46.69±9.14, and 49.63±8.68), respectively (p <0.05). Successful operation rate with excellent and good MacNab’s criteria at 2 years was 97%. There was an increment of statistically significant bilateral psoas muscle cross-sectional area, right side (70.03±149.1 mm²) and left side (67.59±113.2 mm²) (p <0.05).Conclusions: Uniportal EPTLIF achieved good fusion and improved clinical outcomes with favorable paraspinal musculature bulk at the 2-year follow-up.
인슐린 비의존성 당뇨병에서 전신골밀도와 체내 총칼슘량 , 체지방량 및 다른 요인과의 관계
우인숙(In Sook Woo),양형인(Hyung In Yang),나정일(Jeong Il Na),황이숙(Yi Sook Hang),이동찬(Dong Chan Lee),김영설(Young Seol Kim),김진우(Jin Woo Kim),김광원(Kwang Won Kim),최영길(Young Kil Choi) 대한내과학회 1991 대한내과학회지 Vol.41 No.4
N/A Some studies suggest that patients with diabetes mellitus have an increased incidence of osteoporosis, but others have disputed it. The mechanisms of reduced bone density in diabetes are unclear but excessive calcium loss in the urine is generally accepted as one of the factors which contribute to bone loss in diabetes. Whole body bone densitometry makes possible to estimate the total body calcium concentration which might be influenced by urinary calcium loss and other humoral factors. To elucidate the possible direct relationship between total body calcium and reduced bone density, we examined the total body calcium, total body fat and the bone mineral density of the lumbar and femur with densitometry (Dual Energy X-ray Absorptiometry) in 93patients with type II diabetes mellitus end 316nondiabetic normal controls, Serum osteocalcin levels also measured by radioimmunoassay in all the patients. The results are summarized as follows: l) The bone mineral density declined with age in both diabetics and the control group but had no significnat differences statistically. 2) Thirty-six patients with diabetes (37.9%) had reduced bone mineral density below one standard deviation (1SD) of the normal controls. 3) The total body calcium concentration correlated highly to the total body bone density. 4) The femur bone density correlated more significantly than the lumbar bone density to the whole body bone density. 5) There were no correlations between the whole body bone density and total body fat or serum osteocalcin levels.
이정임(Jung Im Yi),조항주(Hang Joo Cho),신옥락(Ok Ran Shin),김기환(Kee Hawn Kim),안창혁(Chang Hycok Ahn),김정수(Jeong Soo Kim),유승진(Seung Jin Yoo),임근우(Keun Woo Lim),김지일(Ji Il Kim) 대한외과학회 2008 Annals of Surgical Treatment and Research(ASRT) Vol.75 No.5
Primary retroperitoneal mucinous cystadenomas are rare tumors that are almost always found in women. They are similar to ovarian originated mucinous cystadenoma, but there is no any other evidence of an ovarian origin for primary retroperitoneal mucinous cystadenomas. A 33-year-old woman with complaints of RLQ pain was found to have a cystic mass in the right retroperitoneal space on her abdominal CT scan. The histological diagnosis was confirmed as primary mucinous cystadenoma. We report here on a case of retroperitoneal mucinous cystadenoma, and we also talk about this tumor, including its histogenesis, through a review of the available literature.
이금호 ( Kum Ho Yi ),위형수 ( Hyung Soo Wi ),박인서 ( In Suh Park ),이진우 ( Jin Woo Lee ),정석 ( Seok Jeong ),이돈행 ( Don Hang Lee ),김영수 ( Young Soo Kim ) 대한내과학회 2006 대한내과학회지 Vol.71 No.4
가드너 증후군은 APC 유전자가 다양한 발현을 보이는 질환이다. 가드너 증후군은 가족성 선종성 용종증의 한 변형으로 분류되고 상염색체 우성으로 유전되는 질환으로 위장관의 용종증, 골종, 다양한 양성 연부조직 종양과 장 이외의 병변들이 동반된다. 드물게 동반되는 종양으로 갑상선의 유두암, 담도 종양, 부신 종양 등이 있다. 지금까지 부신 종양의 동반이 드물다고 알려져 있지만 일반인에서도 우연한 부신 종양이 많이 발견되고 있으며 가족성 선종성 용종증에서는 일반인 보다 더 많은 빈도로 발견된다는 보고도 있다. 가드너 증후군은 예방적 대장 절제술 후 오랜 생존 기간을 유지할 수 있지만 부신 선암이 동반된 경우 예후에 영향을 미칠 수 있으므로 가드너 증후군이나 가족성 선종성 용종증이 진단되면 부신 종양의 동반 유무를 확인해야 한다. 저자들은 37세 남자에서 발생한 부신 선종을 동반한 가드너 증후군 1예를 경험하여 보고한다. Gardners syndrome is a single gene disorder with variable manifestations associated with the adenomatous polyposis coli (APC) gene; including gastrointestinal polyposis and osteomas associated with a variety of benign soft tissue tumors and other extraintestinal manifestations. Infrequently associated tumors include papillary carcinoma of the thyroid, biliary neoplasia and adrenal neoplasia, both benign and malignant. It is classified as a variant of classic familial adenomatous polyposis (FAP) and is an autosomal dominant disease. The incidence of incidentaloma in FAP patients is known to be higher than general population. The occurrence of an adrenal carcinoma could affect a patient`s prognosis with Gardners syndrome. Increased awareness of this lesion is important in patients with Gardners syndrome who have extended lifespan after prophylactic colectomy. We report a 37 year old case of Gardners syndrome associate with adrenal adenoma.(Korean J Med 71:415-419, 2006)