早期

Sound enamel surfaces were dematerialized in bacteria model in vitro. QLF was used to analyze the area of lesions, the loss of fluorescence and ΔQ on enamel surfaces after demineralization.

目的 通过在体外形成牙釉质光滑面早期龋损的恒化器龋病模型，评价定量光导荧光技术反映光滑面早期龋损矿物质含量变化的效果。

The results are shown as below.1 Tectono-thermal evolution: The history of the Songliao basin is divides into four stages, high-temperature doming and extension, high-temperature rifting, low-temperature depression, and low-temperature shrinkage. Numerical simulation of mechanical process shows that the basin appeared in the early- to late- Jurassic as a result of rapid low-angle subduction of the Pacific plate towards the northwest, of movement of the Siberian block towards the southeast, of many other influences such as internal thermal stress in the mantle, gravitational force, stress of phase transition, etc. Both the Pacific plate and the Siberian block slowed down in the early Cretaceous, and almost stopped in the middle Cretaceous with the rapid decrease of abnormal heat in the mantle below.

盆地构造热演化力源机制数值模拟研究表明：早、中侏罗世至晚侏罗世晚期，盆地演化主要是太平洋块体向北西方向以低角度快速俯冲和西伯利亚块体向东南俯冲共同作用的结果，同时也与地幔内部热力、重力、相变力以及地球自转及公转速度变化效应和上覆块体绝对运动的作用有关；早白垩世早期至早白垩世中期，来自东部太平洋块体俯冲作用的减弱，而这一时期影响盆地演化的主要力源是地幔内部热力、重力、相变力以及地球自转及公转速度变化效应和来自西伯利亚块体俯冲作用；进入早白垩世晚期至晚白垩世早期，由于双重俯冲带中西侧俯冲作用带基本停止活动，而本区地幔热能的快速衰减则控制盆地的构造热演化；晚白垩世晚期以后，太平洋块体活动加强和地幔热运动是影响盆地演化的主要动力。

Objective To establish the scoring system of endometria for the patients of early ectopic pregnancy detected by the transvaginal power Doppler ultrasound,and study its significance of differential diagnosis.

目的 建立早期异位妊娠患者子宫内膜经阴道能量多普勒超声检查的评分系统，探讨该评分系统在早期EP诊断中的应用价值。

Conservative treatment is necessary for all patients with intestinal fistulas before curible operation is considered.

结果 高位肠瘘18例，其中8例早期手术3例治愈，10例保守治疗8例治愈，低位肠瘘16例，其中4例早期手术2例治愈，12例保守治疗10例治愈。

The inoculation of MDV in general indued to decrease the production of IL-2、 IFN-γ-Th〓 cytokines in vitro, and there are differences between spleen and Thymus lymphocyte on the production of IL-2 in vitro, only thymus lymphocyte IL-2 prodution increased transient in early time. The cytotoxity TNF induced in thymus and spleen lymphocyte and bone marrow macrophage shown a simillar curve of"V"shape. MDV infection cause cell-mediated immune declines.

MDV接种总体上降低IL-2和IFN-γ-Th〓细胞因子体外诱生，其中IL-2体外诱生在胸腺细胞和脾淋巴细胞有差别，前者有早期短暂增强作用；而对TNF在上述两种细胞和骨髓巨噬细胞的诱生作用呈现类似规律，即呈现&V&形曲线，在接种后早期（1~5天）和25天升高，而在10天开始下降，至第20天降至低谷，MDV感染导致雏鸡细胞免疫水平下降，促进MD发病。

Expression of tert and hprt genes were detected simultaneous in all single-copy embryos developed at 4-C (65h-post hCG, 4/4), 8-C (75 h-post hCG, 4/4), morulae (93h-post hCG, 4/4) and blastocyst (118h-post hCG, 4/4) stages and the level of transcription increased.

结果表明，持家基因hprt在成熟卵母细胞受精前后，以及胚胎早期发育过程中均存在转录本。40%卵母细胞中存在的tert mRNA在受精后很快降解，检测不到；胚胎基因组在2-C早期开始转录tert mRNA，转录水平逐渐上升。

The peristalses of the dilated ureter could be seen but it disappeared in the end of the ionvolved ureter,which was of normal calibrc.Delay in the empty of ureter was seen.The ureter counter current from the bladder could not be found.

而扩张输尿管末端临近膀胱入口处管径正常，为功能性梗阻段，长度为1～2cm；（2）除功能性梗阻段以外，其余段输尿管的蠕动一般正常，早期有时可见高蠕动；（3）扩张输尿管排空延迟；（4）无膀胱输尿管返流；（5）本病的X线造影检查应选用大剂量静脉尿路造影，造影时早期解除腹压带，增加延迟摄片，并加照膀胱斜位点片，加强动态观察。

Several factors cause dRTA,and the clinical characteristic is varied;we should think it over before perorating,make needling biopsy of kidney if necessarily,in order to diagnosis and therapy earlier,to prevent renal function worsening.

因素能引起远段肾小管性酸中毒，其临床表现多样，临床上应全面判断，必要时行肾穿刺活检，争取早期诊断早期治疗，以防止肾功能进行性恶化。

Several factors cause dRTA,and the clinical characteristic is varied;we should think it over before perorating,make needling biopsy of kidney if necessarily,in order to diagnosis and therapy earlier,to prevent renal function worsening.

多种因素能引起远段肾小管性酸中毒，其临床表现多样，临床上应全面判断，必要时行肾穿刺活检，争取早期诊断早期治疗，以防止肾功能进行性恶化。

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在恶性间皮瘤早期，肉眼可见在正常或不透明的脏层或壁层胸膜上有众多白色或灰色颗粒和结节或薄板块，随着肿瘤的发展，胸膜表面愈来愈变厚，长满结节，间皮瘤结节向四方伸延，连续成片，包囊肺脏使其窖越缩。。。在恶性间皮瘤早期，肉眼可见在正常或不透明的脏层或壁层胸膜上有众多白色或灰色颗粒和结节或薄板块，随着肿瘤的发展，胸膜表面愈来愈变厚，长满结节，间皮瘤结节向四方伸延，连续成片，包囊肺脏使其窖越缩越小

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。