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排序方式: 共有8823条查询结果,搜索用时 31 毫秒
1.
MA Zhi Tao WANG Na HE Fan LIU Xiao Feng SHEN Xin 《Biomedical and environmental sciences : BES》2022,35(5):458-462
<正>Mycobacterium tuberculosis is the primary bacteria that leads to human tuberculosis(TB),which usually affects the pulmonary organs. TB is one of the top 10 causes of death worldwide;however, China is one of eight countries that together account for two-thirds of the total number of cases globally. 相似文献
2.
Kui Li Jiawen Wang Shengxiong Liu Sen Su Chenjian Feng Xiaoxiang Fan Zhiyong Yin 《中华创伤杂志(英文版)》2015,18(2):65-73
Objective: To study the biomechanical mechanism of head injuries beaten with sticks, which is common in the battery or assaultive cases.
Methods: In this study, the Hybrid-III anthropomorphic test device and finite element model (FEM) of the total human model for safety (THUMS) head were used to determine the biomechanical response of head while being beaten with different sticks. Total eight Hybrid-III tests and four finite element simulations were conducted. The contact force, resultant acceleration of head center of gravity, intracranial pressure and von Mises stress were calculated to determine the different biomechanical behavior of head with beaten by different sticks.
Results: In Hybrid-III tests, the stick in each group demonstrated the similar kinematic behavior under the same loading condition. The peak values of the resultant acceleration for thick iron stick group, thin iron stick group, thick wooden stick group and thin wooden stick group were 203.4 g, 221.1 g, 170.5 g and 122.2 g respectively. In finite element simulations, positive intracranial pressure was initially observed in the frontal comparing with negative intracranial pressure in the contra-coup site. Subsequently the intracranial pressure in the coup site was decreasing toward negative value while the contra-coup intracranial pressure increasing toward positive values.
Conclusions: The results illustrated that the stiffer and larger the stick was, the higher the von Mises stress, contact force and intracranial pressure were. We believed that the results in the Hybrid-III tests and THUMS head simulations for brain injury beaten with sticks could be reliable and useful for better understanding the injury mechanism. 相似文献
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4.
Er-sheng GAO Jie YANG Li-feng ZHOU Mao-hua MIAO 《生殖与避孕(英文版)》2006,17(3):176-188
The world is experiencing a rapid development in the 21th century. All countries estab- lished their schemes considering their situation of social and economic development. It is widely recognized that the key element of development is “people”. As to t… 相似文献
5.
韩刚 高江平 洪宝发 王晓雄 文载律 唐杰 张旭 HAN Gang GAO Jiang-ping HONG Bao-fa WANG Xiao-xiong WEN Zai-lü TANG Jie ZHANG Xu 《中华泌尿外科杂志》2006,30(1):375-378
目的 探讨前列腺穿刺标本中磷酸化信号传导与转录激活因子3(P-STAT3)表达在前列腺癌(PCa)早期诊断中的应用价值.方法采用免疫组织化学方法检测接受重复穿刺的PCa患者初次穿刺未检出癌的标本(29例)、重复穿刺确诊PCa时的癌灶标本(29例)、重复穿刺确诊PCa时的非癌灶标本(29例)以及良性前列腺增生(BPH)患者初次穿刺标本(29例)中P-STAT3的表达.统计学分析其与临床诊断的相关性及对PCa发生的预测作用.结果 P-STAT3在PCa患者癌灶标本、非癌灶标本及初次穿刺标本中阳性表达率分别为93.1%(27/29)、82.8%(24/29)和86.2%(25/29),在BPH标本中阳性表达率为10.3%(3/29),前三者的阳性率明显高于后者(X2=60.123,P=0.000);如以初次穿刺标本中P-STAT3表达阳性作为PCa的诊断标准,该方法的敏感性为86.2%,特异性为89.7%.结论 检测穿刺标本P-STAT3表达可以作为前列腺穿刺活检的辅助诊断方法,用于PCa的早期诊断,预测PCa的发生. 相似文献
6.
Shengsong Huang~ Minbin Yu~ Jie Lian~ Min Fan~ Changyu Qiu~ Zhongshan Ophthalmic Center Sun Yat-sen University Guangzhou China The Department of Ophthalmology The First Hospital of Quanzhou Fujian China 《眼科学报》2003,19(3):156-160
Purpose: To evaluate the feasibility, reliability and analgesia effect of topical anesthesia combined with subconjunctival anesthesia in anti-glaucomatous surgery.Methods: Two hundred and four cases (357 eyes) underwent anti-glaucomatous surgeries under topical anesthesia with 0.5% Alcaine eye drops combined with subconjunctival anesthesia with 2% Lidocaine. The analgesic effect was analysed with visual analogue pain scale.Results: Among all of 357 eyes, 62 eyes underwent peripheral iridectomy, 67 eyes underwent simple trabeculectomy, 167 eyes underwent compound brabeculectomy and 12 eyes nonpenetrating trabecular surgery. The effects of anesthesia were as follows: 304 eyes (85.2%) were painless (Grade Ⅰ), 50 eyes (14.0%) were slight painful (Grade Ⅱ), and 3 eyes (0.8%) were more painful (Grade Ⅲ) during surgery. And no severe complications were observed in all the cases during surgery and postoperatively. Amaurosis fugax was not observed in the glaucoma patients at the late stage with narrow vi 相似文献
7.
目的:观察8-甲氧沙林对体外培养黑素细胞内游离钙浓度、细胞骨架蛋白形成的影响。方法:正常人黑素细胞取自包皮环切术切取的包皮,用激光共聚焦扫描显微镜检测细胞内游离钙浓度,用罗丹明结合毒伞素对细胞骨架蛋白进行特异性染色。结果:8-甲氧沙林可使细胞内游离钙离子浓度升高,促进黑素细胞骨架蛋白合成。结论:8-甲氧沙林可能通过诱导黑素细胞内钙离子浓度升高和细胞骨架actin蛋白生成,从而影响黑素细胞的迁移。 相似文献
8.
In this immunohistochemical study, the authors detected the expression of c-myc in keratinocytes (ECK) from 30 psoriatics before and after Qingdai Compound Capsule (QDCC) treatment and 12 normal subjects for control. The results showed that the ECK of patients before treatment was significantly higher than that in the normal control group, and its level was correlated with histopathological changes of affected skin. After treatment the ECK was normalized. It is believed that QDCC could decrease the ECK in psoriatics and this effect was probably mediated by inhibiting c-myc expression. This study provided an experimental evidence for the application of QDCC in treating psoriasis. 相似文献
9.
2 294名军人伤害住院情况分析 总被引:1,自引:0,他引:1
目的:对某区部队伤害住院患者进行流行病学特征分析,提出预防建议。方法:应用各医院上报军区统计中心的数据库资料进行分析。结果:意外损伤、军事训练伤、交通伤和烧烫伤是导致部队伤害住院的四大主要因素。伤害主要发生在18—23岁(占62.16%)之间,干部意外损伤、交通伤和锐器伤高于战士,军训伤则战士明显高于干部。结论:部队要重视和加强伤害的预防工作。 相似文献
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