如何行成关系数据模型到面向对象数据模型的映射

关系数据模型是基于记录的基本数据模型;面向对象数据模型是基于对象的基本数据模型;两种数据模型在某种程度上应存在相互映射和相互转变的可能性,它们的相互映射和相互转变将使关系数据库和面向对象数据库之间的转变成为可能。     

白癜风遗传学研究进展

白癜风的发病机制目前尚不十分清楚,但与遗传因素密切相关,其遗传模式是多基因遗传模式.研究结果 将白癜风相关基因定位于多条染色体上:1p31(AIS1),7q(AIS2),8p(AIS3),17p(SLEV1),4q13-q21(AIS4).在易感基因的搜寻上也作了大量的工作,并取得一定进展,将易感基因定位于HLA、PTPN22、VIT1、CAT、TAP1、ACE、GSTs、白介素-10等基因上.     

Zm上的负循环码和自对偶码

利用环直和分解的性质研究了Zm（m≥6）上的负循环码与其直和项上负循环码之间的关系,通过定义Zm与环的直和项有相同特征的剩余类环之间的同构映射ψ,得到了在同构映射ψ作用下环Zm上负循环码与其外直和项上负循环码关系,给出了Zm上自对偶码存在的充分必要条件．     

先天性白内障一家系致病基因的排除性定位

目的 明确一个国人常染色体显性先天性白内障（ADCC）家系致病基因的染色体位点是否位于已知的22个非综合征型ADCC致病位点内，从而初步定位该ADCC家系致病基因的染色体位点。设计 家系遗传研究。研究对象 一个先天性白内障家系。方法 对26例家系成员中的16例进行临床检查、采集静脉血样、提取基因组DNA；在已知的22个非综合征型ADCC致病位点内，分别选取3-6个多态性微卫星标记，对该ADCC家系进行遗传连锁分析。主要指标 先天性白内障临床表型、Lod值。结果 该家系患者为晶状体前囊膜及前囊膜下混浊；所有多态性微卫星标记与致病基因两点间的Lod值均≤-2，证实微卫星标记所在的染色体区域与该ADCC家系的致病基因不连锁。结论 该ADCC家系致病基因的染色体位点不在已知的22个非综合征型ADCC致病位点内，可能是一个新的致病基因导致了该家系的临床表型。     

对隐喻的空间映射论与概念整合认知过程的再认识

回顾Fauconnier的空间映射论与概念整合的认知过程,并对其中的有关内容进行再认识.在再认识中着重强调空间映射与概念整合过程中主观能动性的发挥,相似概念提取的重要性,及隐喻形成后所提取概念缺省的必要性.结论:从认知语言学来看,隐喻的常规和非常规含意划分意义不太大.     

Effect of the inoculation level of Lactobacillus acidophilus in probiotic cheese on the physicochemical features and sensory performance compared with commercial cheeses

The complex metabolism of probiotic bacteria requires several technological options to guarantee the functionally of probiotic dairy foods during the shelf life. This research aimed to evaluate the effect of the supplementation of increasing amounts of Lactobacillus acidophilus (0, 0.4, or 0.8 g/L of milk) on the physicochemical parameters and sensory acceptance of Minas fresh cheese. In addition, the sensory acceptance of probiotic cheeses was assessed using a consumer test and compared with commercial cheeses (conventional and probiotic). High counts (9.11 to 9.42 log cfu/g) of L. acidophilus were observed throughout the shelf life, which contributed to the maintenance of its probiotic status and resulted in lower pH values and greater production of organic acids. The probiotic cheeses presented lower scores for appearance, aroma, and texture compared with conventional cheeses. Internal preference mapping explained almost 60% of the total variation of the data and showed a large number of consumers concentrated near the conventional cheeses, demonstrating greater preference for these samples. The findings indicated that some negative sensory effects could occur when high level of supplementation with L. acidophilus is used in probiotic cheese processing.     

二维纺织复合材料成型的研究

介绍了二维纺织复合材料压制成型方法和织物剪切测试方法,讨论了剪切变形模式对织物成型的影 响。介绍了模拟二维纺织复合材料成型过程的两种模型:力学模型和数学模型。详细描述了铺覆法 的建模过程,并对铺覆法建模过程中所需的曲面方程表示方法进行了简单介绍。     

测绘小软件集锦平台的设计与实现

随着测绘工作的广泛开展,诞生了许多为解决测绘工程实际问题而编制的小型测绘软件,小软件种类繁多、使用方法各异,由此给实际的使用、传输和管理等带来诸多不便。针对此问题,作者设计了测绘小软件集锦平台,并利用C#2008编程予以实现,使各个独立的软件及在大型软件下二次开发的软件新功能能够通过该平台方便地加载及集中使用,不但方便了使用者,也解决了大量小软件的管理、传输等问题。     

A child with localized vulval pemphigoid and IgG autoantibodies targeting the C-terminus of collagen XVII/BP180

Localized vulval pemphigoid of childhood (LVPC) has previously been reported in six girls. Clinical features and immunopathological data have suggested it to be a morphological variant of bullous pemphigoid. Epitope targets of the autoantibodies of these patients have not been defined in detail. We describe a 9-year-old girl with possible cicatricial LVPC and circulating IgG antibodies directed against native collagen XVII/BP180, its 120-kDa soluble ectodomain and against the C-terminus of collagen XVII/BP180. No reactivity was detected towards the NC16A domain of collagen XVII/BP180. Linear IgG and C3 deposits were found along the cutaneous basement membrane zone. On 1 mol/L salt-split skin, IgG autoantibodies were shown to bind to the epidermis, and the HLA type II allele DQB1*0301, a marker with significantly increased occurrence in patients with ocular and oral cicatricial pemphigoid, was identified in this patient. Our data suggest that LVPC is a variant of bullous pemphigoid in which direct immunofluorescence microscopy combined with immunoblot analysis can deliver valuable diagnostic information for differential diagnosis. However, differentiation between the scarring and non-scarring course of the disease cannot be made with the present diagnostic markers and therefore careful follow-up of patients with LVPC is required.