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排序方式: 共有9786条查询结果,搜索用时 15 毫秒
981.
Dong Y Lee Kang U Lee Jung H Lee Ki W Kim Jin H Jhoo Sung Y Kim Jong C Yoon Sung I Woo Jin Ha Jong I Woo 《Journal of the International Neuropsychological Society》2004,10(1):72-81
This study aimed to explore the effects of age, education and gender on the performance of eight tests in the Korean version of the CERAD neuropsychological assessment battery and to provide normative information on the tests in the Korean elderly. The battery was administered to 618 healthy volunteers aged from 60 to 90. People with serious neurological, medical and psychiatric disorders, including dementia, were excluded. Multiple linear regression analyses were performed to assess the relative contribution of the demographic factors on the score of each cognitive test. Age, education, and gender were found to have significant effects on the performance of many tests in the battery. Based on these results, 4 overlapping age normative tables (60 to 74, 65 to 79, 70 to 84, and 75 to 90 years of age) with 3 educational strata (0 to 3 years, 4 to 6 years, and 7 years and more) for both genders are presented. The normative information will be useful for a clinical interpretation of the CERAD neuropsychological battery in Korean elderly as well as for comparing the performance of the battery across countries. 相似文献
982.
Byung Yoon Choi Ja-Won Koo Seung Ha Oh Sun O Chang Chong-Sun Kim 《Otolaryngology--head and neck surgery》2005,133(3):334-338
OBJECTIVE: Evaluation of head-position dependency during the ice-water test is essential when the test is indicated. Because ice-water irrigation (IWI) in the prone position is frequently skipped in many laboratories, we investigated the importance of evaluating position dependency in an ice-water test. DESIGN AND SETTING: Twenty-five unilateral peripheral vestibulopathy patients showing no nystagmus during warm irrigation were included. IWI was performed in supine and prone positions, and maximum slow-phase velocity and direction of nystagmus were assessed by using video nystagmography. RESULTS: Eleven cases showed head-position dependency and were interpreted as hypofunctional. Fourteen cases showed no dependency, suggesting the absence of end organ function. In the latter group, 6 patients showing definite nystagmus in supine position could have been misinterpreted as hypofunctional, had it not been for prone-position results. CONCLUSIONS: Evaluation of head position dependency by using IWI is important in the determination of lateral semicircular canal function. 相似文献
983.
目的 观察吸入液氧对高原人体力竭运动自由基代谢的影响。方法 对进驻海拔 3 70 0m高原 3个月的 1 0名健康青年在吸入液氧 (吸氧组 ,4L/min)和不吸液氧 (对照组 )的条件下 ,采用功率自行车进行递增负荷运动 ,并在安静时 ,运动后测定血中超氧化物歧化酶 (SOD)、总抗氧化能力 (T ACO)、活性氧 (ROS)和丙二醛 (MDA)含量。结果 与安静时比较 ,对照组和吸氧组T ACO ,ROS,MDA均增高 ,SOD吸氧组增高 ,有非常显著差异 (P <0 0 1 ) ,对照组无统计学差异 (P >0 .0 5 )。运动后吸氧组较对照组SOD ,T ACO增高 ,ROS ,MDA降低 (P <0 0 1 )。结论 液态氧能延长供氧时间 ,并能对高原运动造成的自由基损伤有明显抑制作用 ,可加速运动后体内代谢产物自由基的清除及加快疲劳消除 相似文献
984.
L Lukács I Bartek A Haán J Hankóczy A Arvay 《European journal of cardio-thoracic surgery》1992,6(1):15-17
From 1969 to 1989, 15 patients with an aneurysm of the sinus of Valsalva underwent operative correction. This represents 0.23% of 6515 cardiac operations with cardiopulmonary bypass during that time. There were 8 males and 7 females ranging in age from 15 to 54 years (mean 35.8 years). Symptoms of congestive heart failure, fatigue and palpitation were common. All patients underwent cardiac catheterization including aortography. Associated lesions included aortic valve regurgitation in 6 patients and a ventricular septal defect in 3 patients. The following connections occurred: right coronary sinus to right ventricle (8 patients), right coronary sinus to both right atrium and right ventricle (1 patient), and noncoronary sinus to right atrium (6 patients). The aneurysm was repaired via aortotomy or through the chamber into which it emptied. The aortic valve was replaced in 2 patients. There were no early or late postoperative deaths. Fourteen patients were in NYHA functional class I at late follow-up (range 0.5 to 20.5 years, mean 8.7 years). There have been no recurrences. Our experience supports the concept that early surgical intervention in patients with ruptured aneurysms of the sinus of Valsalva is justified. 相似文献
985.
986.
S.D. Park J.S. Kim S.H. Han Y.K. Ha K.S. Song K.Y. Jee 《Applied radiation and isotopes》2009,67(9):1676-1682
In this paper a relatively simple and low cost analysis procedure to apply to a routine analysis of 129I in low and intermediate level radioactive wastes (LILWs), cement and paraffin solidified evaporated bottom and spent resin, which are produced from nuclear power plants (NPPs), pressurized water reactors (PWR), is presented. The 129I is separated from other nuclides in LILWs using an anion exchange adsorption and solvent extraction by controlling the oxidation and reduction state and is then precipitated as silver iodide for counting the beta activity with a low background gas proportional counter (GPC). The counting efficiency of GPC was varied from 4% to 8% and it was reversely proportional to the weight of AgI by a self absorption of the beta activity. Compared to a higher pH, the chemical recovery of iodide as AgI was lowered at pH 4. It was found that the chemical recovery of iodide for the cement powder showed a lower trend by increasing the cement powder weight, but it was not affected for the paraffin sample. In this experiment, the overall chemical recovery yield of the cement and paraffin solidified LILW samples and the average weight of them were 67±3% and 5.43±0.53 g, 70±7% and 10.40±1.60 g, respectively. And the minimum detectable activity (MDA) of 129I for the cement and paraffin solidified LILW samples was calculated as 0.070 and 0.036 Bq/g, respectively. Among the analyzed cement solidified LILW samples, 129I activity concentration of four samples was slightly higher than the MDA and their ranges were 0.076–0.114 Bq/g. Also of the analyzed paraffin solidified LILW samples, five samples contained a little higher 129I activity concentration than the MDA and their ranges were 0.036–0.107 Bq/g. 相似文献
987.
988.
989.
Kim YJ Jeon YJ Ahn YM Lee HY Woo SY Park HS Ha EH Pang MG 《Archives of medical research》2007,38(8):839-845
BACKGROUND: Asymmetric dimethylarginine (ADMA), an endogenous inhibitor of nitric oxide synthase, induces endothelial dysfunction by reversibly blocking NO production from L-arginine. To elucidate the association of prenatal status of ADMA with placental heat-shock protein 70 (HSP70) and lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1) in normal full-term pregnancies, we evaluated the expression of placental HSP70 and LOX-1. METHODS: Tissue samples of placentas obtained from 60 normal-term pregnancies were categorized into 30 cases with a lower level of prenatal ADMA (0.28 +/- 0.07 microM) and 30 cases with a higher level of prenatal ADMA (1.31 +/- 0.44 microM). We evaluated the placental expression of HSP70 and LOX-1 with Western blot analysis and immunohistochemistry and determined the correlation between HSP70 and LOX-1. RESULTS: We found that prenatal increased ADMA is associated with increased placental HSP70 and LOX-1 expression. CONCLUSIONS: We postulate that higher ADMA levels are associated with excessive levels of oxidative damage and stress markers (HSP, LOX-1) in placental tissues. 相似文献
990.
Our intestine is colonized by an impressive community of bacteria, that has profound effects on the immune functions. The relationship between gut microbiota and the immune system is one of reciprocity: bacteria have important contribution in nutrient processing and education of the immune system and conversely, the immune system, particularly gut-associated lymphoid tissues (GALT) plays a key role in shaping the repertoire of gut microbiota. In this review we discuss new insights into the role of IgA in the maintenance of immune homeostasis and the reciprocal interactions between gut B cells and intestinal bacteria. 相似文献