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排序方式: 共有221条查询结果,搜索用时 15 毫秒
51.
针刺疗法治疗功能性肠疾病的研究进展 总被引:11,自引:0,他引:11
针灸在中国已经经验性的应用了数千年,而且在全世界范围越来越广泛的被医生和患者所接受.功能性胃肠疾病是临床上常见疾病.依据罗马标准,普通人群中一种以上功能性胃肠病的患病率高达70%以上.由于其病因与发病机制仍不明确,所以治疗效果尚不能令人满意.在过去的几十年里,对于针灸对于功能性胃肠疾病的治疗及可能机制做了一些研究.对探求针刺疗法对功能性胃肠疾病的潜在治疗作用有着重要的临床意义.我们对已有的关于针刺疗法对于不同功能性肠疾病的治疗效果和机制研究作一综述. 相似文献
52.
Bartlomiej Kramarczyk Mateusz Pytlik Piotr Mertuszka Katarzyna Jaszcz Tomasz Jarosz 《Materials》2022,15(3)
Bulk emulsion explosives, although they are very convenient and safe to use, also have disadvantages, with the main one being the relatively low power in relation to cartridged emulsion explosives or classic nitroesters (e.g., dynamites). Therefore, materials of this type currently have only limited use. In addition, these materials are characterized by the variability of blasting parameters over time from loading into the blasthole, which is closely dependent on the utilised mining method of the mine, which makes it difficult to precisely control the fragmentation. The industry is trying to respond to the demand for bulk emulsion explosives with increased energy and improved parameter stability, but so far it has not been possible to do so in a safe and effective way. Methods of improving blasting parameters mainly rely on additives to oxidant solutions during production, which creates additional risks at the production stage, as it involves handling hot and concentrated ammonium nitrate solutions, for which there are known cases of uncontrolled decomposition of such solutions, even leading to an explosion. This paper presents a method of improving the thermodynamic parameters and the stability of the sensitization reaction without the need for changes in the oxidant solution. 相似文献
53.
Children of alcoholics: Attention, information processing and event-related brain potentials 总被引:1,自引:0,他引:1
O van der Stelt WB Gunning J Snel E Zeef A Kok 《Acta paediatrica (Oslo, Norway : 1992)》1994,83(S404):4-6
Recent studies on biological markers and risk factors for alcoholism have distinguished between nonalcoholic individuals with a family history of alcoholism and those without such a family history on measures of event-related brain potentials. The main finding of these "high-risk" studies is a smaller amplitude of the P300 component in males with a history of paternal alcoholism. This relationship between P300 amplitude and a family history of paternal alcoholism has been observed in adults and children. Consequently, several authors have suggested that a reduced P300 amplitude could serve as a vulnerability marker for alcoholism. We address several conceptual and methodological issues involved in the study of event-related potentials in children at high risk for alcoholism. Subsequently, the ongoing high-risk study of the Amsterdam Institute for Addiction Research is described briefly. 相似文献
54.
Psychological mechanisms of enhanced risk of addiction in children of alcoholics: a dual pathway? 总被引:1,自引:0,他引:1
The background and rationale of a recently started project of the Amsterdam Institute for Addiction Research are outlined. This project is aimed at the psychological mechanisms underlying an enhanced risk of (later) addiction in children of alcoholics and the relationship with childhood psychopathology. A dual pathway mechanism is proposed, in which the type of alcoholism of the parent plays a major role. The child of a multigenerational primary alcoholic parent may suffer from an inherited mild dysfunction of the prefrontal cortex, expressed in neuropsychological and personality characteristics similar to those of the alcoholic parent. These are impulsive, aggressive and reward-seeking behaviour, response perseveration and, in some children, related psychopathology such as conduct disorders. For a child of a secondary alcoholic parent, another mechanism is proposed. In these children, stress and social learning may lead to negative affectivity and repressive coping style, with emotional problems at a later age, and the risk of falling into the "circle of secondary alcoholism". In both pathways, alcohol-related expectancies are suggested to constitute a "final common pathway" between different risk factors and later alcohol abuse. Specific expectancies might be related to different pathways and to gender differences in later drinking patterns. 相似文献
55.
小檗碱电化学检测器在中(成)药流动注射分析中的应用 总被引:1,自引:0,他引:1
中药材及其制剂,因成分复杂,对其有效成分的测定,目前大多尚未建立适宜的方法。文献报道的测定方法有薄层—分光光度法、薄层扫描法、萃取—分光光度法、柱色谱—分光光度法及高效液相色谱法等,这些方法大多操作繁琐、分析周期较长、且分析的精密度和准确度亦不够理想。近年来,随着流动注射分析(FIA)及化学传感器的发展,中成药中有效成分的分析有了新的发展。本文报道了基于小檗碱流通型传感器的电化学检测器用于含小檗碱中(成)药样品的流动注射分析,方法简便快速,结果准确可靠,样品分析速度可达120次/h。 相似文献
56.
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58.
Kim SW Grant JE Kim SI Swanson TA Bernstein GA Jaszcz WB Williams KA Schlievert PM 《The Journal of neuropsychiatry and clinical neurosciences》2004,16(3):252-260
Rheumatic fever is an immunologically mediated disease that follows infection by group A beta-hemolytic Streptococcus (GABHS). In rheumatic fever, antibodies generated against GABHS cross-react with the heart, joints, skin, and other sites, inducing an inflammatory, multisystem disease. Brain tissue-specific antibodies have been demonstrated in a subset of children with Sydenham chorea (a component of the Jones criteria for the diagnosis of rheumatic fever), and most Sydenham chorea patients manifest obsessive-compulsive symptoms very similar to those in traditional obsessive-compulsive disorder. The parallels drawn from the paradigm of Sydenham's chorea to Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcal Infections (PANDAS) is an area of active controversy. Newly emerging information on the role of GABHS superantigens in the pathogenesis of rheumatic fever is of particular interest. In this article, we review the microbial characteristics of GABHS and the subsequent immune responses to GABHS as a possible etiology of PANDAS. 相似文献
59.
Testicular tumors: prospective analysis of real-time US patterns and abdominal staging 总被引:3,自引:0,他引:3
Echomorphologic features of 57 testicular lesions (48 neoplasms, nine benign lesions) were analyzed prospectively by means of high-resolution real-time ultrasonography (US). There was a broad spectrum of texture patterns for testicular malignancies, 92% of which exhibited a predominantly decreased echogenicity compared with that of normal tissue. US findings alone could not be used to make a specific prediction of malignant disease or to classify a neoplasm histologically. However, different kinds of tumors exhibited characteristic echomorphologic features that corresponded to their gross morphologic appearance; a knowledge of these echomorphologic features is extremely useful for the US differentiation of tumors from nonneoplastic scrotal pathologic conditions. All neoplasms in this series displayed distinct abnormalities in parenchymal texture, and all were detected with US. The sensitivity and predictive value of a normal sonogram were as high as 100%. With regard to the detection of retroperitoneal lymph node metastases from testicular tumors, abdominal US had an overall accuracy rate of 96% and was of superior diagnostic value compared with bipedal lymphangiography. 相似文献
60.