视觉诱发电位监测二硫化碳毒性视网膜病变

目的　探索使用图形视觉诱发电位 (VEP P)早期诊断二硫化碳 (CS2 )中毒性视网膜病变的可能性。方法　选择不同程度接触CS2 5年以上者 1 1 6人 (2 32眼 ) ,并以非接触者 32人 (64眼 )作对照组 ,检测P VEP,并根据接触的不同方式及浓度分组研究。比较各组VEP PP1 0 0 波波幅及潜伏时、潜时值差、波幅差值及A/L值。结果　每日长时间接触CS2 的中、低浓度组的VEP PP1 0 0 波波幅 (8.37±3 .2 0 ) μV及 (7.95± 3.34) μV ,较非接触组的 (9.64± 3.2 5) μV明显下降 (P <0 .0 5;P <0 .0 1 ) ,其A/L值降低。结论　VEP P有助于CS2 中毒性视网膜病变及视神经病变的早期诊断     

原发性肾小球疾病中医证型与舌形指数关系的探讨

目的：探讨原发性肾小球疾病中医证型与舌形指数之间的关系。方法：将116例病例按中医辨证本证分为气虚、阳虚、阴虚、气阴两虚4型，标证分为水湿、湿热、湿浊和瘀血4型，观察舌形；利用专用舌象信息处理仪器，采集舌形数据，经计算机处理输出舌形指数。通过肉眼观察和计算机对所采集舌形的定量分析（舌形指数），探讨各中医证型舌形指数间的差异。结果：各证型之间的舌形指数差异均无统计学意义（P〉0．05）。结论：胖大齿痕舌与气虚水湿证有关，舌形指数对中医辨证分型有一定的指导意义。     

多死因统计分析

本文应用由人口学家Manton,K.G 1976年提出的致死疾病衰老模型(Lethal-defectWearout Model)风险寿命表法对西安市碑林区1987～1988年居民死因进行多死因统计分析,并与传统的Chiang's单死因风险寿命表分析进行了比较。结果表明,在人口趋向老龄化,慢性退行性疾病日趋普遍的情况下,仍沿用单死因统计方法已显得不够合理,而多死因统计分析方法的应用则更具必要性。     

Fuzzy ART: Fast stable learning and categorization of analog patterns by an adaptive resonance system

A Fuzzy Adaptive Resonance Theory (ART) model capable of rapid stable learning of recognition categories in response to arbitrary sequences of analog or binary input patterns is described. Fuzzy ART incorporates computations from fuzzy set theory into the ART 1 neural network, which learns to categorize only binary input patterns. The generalization to learning both analog and binary input patterns is achieved by replacing appearances of the intersection operator (∩) in ART 1 by the MIN operator (Λ) of fuzzy set theory. The MIN operator reduces to the intersection operator in the binary case. Category proliferation is prevented by normalizing input vectors at a preprocessing stage. A normalization procedure called complement coding leads to a symmetric theory in which the MIN operator (Λ) and the MAX operator () of fuzzy set theory play complementary roles. Complement coding uses on-cells and of-cells to represent the input pattern, and preserves individual feature amplitudes while normalizing the total on-cell/off-cell vector. Learning is stable because all adaptive weights can only decrease in time. Decreasing weights correspond to increasing sizes of category “boxes”. Smaller vigilance values lead to larger category boxes. Learning stops when the input space is covered by boxes. With fast learning and a finite input set of arbitrary size and composition, learning stabilizes after just one presentation of each input pattern. A fast-commit slow-recode option combines fast learning with a forgetting rule that buffers system memory against noise. Using this option, rare events can be rapidly learned, yet previously learned memories are not rapidly erased in response to statistically unreliable input fluctuations.     

ECG心搏模式识别

心电图 (ECG)中的心律失常识别对临床分析有着非常重要的意义。本文阐述了心搏模式识别的基本思路 ,对国内外近年来心律失常识别的各种方法进行了分类与总结 ,并且针对不同方法的优缺点进行了详细的比较 ,深入探讨了各种方法存在的主要问题 ,最后指出心律失常识别技术的发展方向。     

基层医院组建卒中小组的初步探讨

目的总结探索在基层医院组建卒中小组，治疗急性脑卒中的模式。方法组建包括社区网络在内的院内卒中小组，对脑卒中患者进行动态的全面评估和系统的个体化治疗。结果规范了急性脑卒中的临床治疗行为，改善了患者预后。结论在基层医院建立卒中小组是一种可行的治疗模式。     

农村社区健康教育与健康促进模式初探

目的 探索适合我国国情的农村社区健康教育模式。方法 拟定统一的调查标准和干预计划,问卷由经过培训的调查员入户调查。结果 总结出社区健康教育必不可少的核心内容,并优化出一套向公众传播这些内容的高效率、低消耗的可行方式。结论 经过两年的实践证明,在农村进行综合性健康教育是切实可行的,模式的实验结果也比较令人满意。     

眼弓形虫病的PVER、OCT和中心视野改变

目的 探讨活动性眼弓形虫病(Ocular Toxoplasmosis,OT)的光相干断层成像、图形视诱发反应和中心视野改变。方法除临床检查、眼底彩色照像、眼底荧光造影(FFA)和脉络膜血管造影(ICG)外,21例33只活动性OT患者均行光相干断层成像(Optical Coherence Tonography,OCT)、图形视诱发反应(Pattern Visual Evoked Response,PVER)检测和自动中心视野分析。结果 本研究中21例患者33只眼的OCT检测结果显示黄斑区视网膜水肿增厚及黄斑顳侧脉络膜新生血管形成。自动视野检测分析,呈现中心部分视野光敏度显著下降。图形视诱发反应显示峰幅值显著降低。结论 活动性眼弓形虫感染的OCT、PVER和自动中心视野检测均呈现明显异常。这些异常类似干中心性渗出性视网膜脉络膜炎之改变。     

1490例2型糖尿病临床辨证分型调查分析

目的 了解2型糖尿病及其并发症中医临床辩证分型的现状，为制定2型糖尿病及其并发症的中医诊疗方案提供依据。方法 采用临床流行病学调查方法，对2型糖尿病及其并发症1490例、64项证候指标进行频数分析，归纳得出2型糖尿病及其并发症的基本证侯，按证候出现率归纳各证的主要证候。结果 2型糖尿病及并发症临床上主要分为热盛伤津、肝肾阴虚、气阴两虚、阴阳两虚、湿热内蕴5类证型，体现了中医“久病多虚，久病多瘀”的观点。结论 2型糖尿病及并发症临床上可按脏腑气血阴阳盛衰分型论治。     

Patterns of cerebellar foliation in recombinant inbred mice

Morphometric analysis of cerebellar foliation patterns at the midsagittal plane was done in the inbred strains BALB/cByJ, C57BL/6ByJ and their 7 recombinant inbred strains in order to assess possible major gene influences. The cerebellum was dissected away from the brainstem and weighed prior to histology so that measures of the depth of fissures and sulci could be related to overall size of the brain and cerebellum. Results for 177 mice revealed that many brains had extra sulci present within the central lobe, the culmen, the declive and the uvula, and that patterns within a genetically uniform inbred strain were highly variable. The measure of sulcus depth was continuous, showing no evidence of a normal versus abnormal dichotomy. Furthermore, the frequency and depth of extra sulci were greater in mice with larger cerebella. Strain differences in size of the whole brain and cerebellum clearly resulted from several genetic loci. This was also true of the extra sulci, except for the declival sulcus which revealed a single gene influence. The gene symbol 'declival sulcus of cerebellum' (dsc) is proposed.