相容性

The appearance of paradox of set theory makes this problem more poignant.

欧几里得几何是第一个公理化体系，非欧几何的出现促使人们对它的基础作了严格审视，其中希尔伯特公理化方法最为成功；但它的相容性问题一直没有解决，集合论悖论使得这个问题更加尖锐。

Two series of polyurethane acrylate grafted acrylic resins (Acr-g-TPU-PETA and Acr-gPPU-PETA) self-emulsifying systems are obtained by grafting -NCO group modified polyurethane acrylates with acrylic copolymer prepared from n-butyl acrylate, styrene,βhydroxyethyl methacrylate and acrylic acid The self-emulsifying systems showed Newtonian fluidity with viscosity closed to that of water, the solid contents were around 30% The T〓 of 15～4℃ for dried film before photocuring favored film formation at room temperature DSC and DMA results showed that PU-PETA is compatible with acrylic resin in the grafted resin The TG and dTG curves for Acr-g-PU-PETA samples were substantially different from the corresponding blends, and the brodened dTG peaks for photocured grafted resin suggest that there might be multiple interactions among chain segments The photocued film of the grafted resins self-emulsifying system exhibited good overall properties with polyurethane acrylate grafts ranging from 30% to 50%, and Acr-g-TPU-PETA series showed better properties than Acr-gPPU-PETA series The adhesion of the photocured film was 1～2 grade, impact strength was 50kg-cm and flexibility was 1mm The Shore hardness and the adhesion of the film decreased markedly if PETA was replaced by HEMA as photoactive group due to the lower C=C double bond content in the grafted resin The polyhydroxy amine-linked thioxanthones photoinitiators can be evenly dispersed in self-emulsifying system without color spot appearing in the dried film The films photocured with IV〓～IV〓 generally exhibited higher Shore hardness, gloss and solventresistance than that cured with Irgacure 2959 and did not induce the rusting of the iron substrate Pigmenting with titanium oxide had no effect on the photocuring The polyhydroxy amine-linked thioxanthone IV〓 and IV〓 can be new candidates for the formulation of titanium oxide pigmented photocurable water-borne coatings for their pale-yellow appearance and slight interference with the color of the coatings WB 4759 with high water-solubility coalesced and separated from the dried resin film, and even induced the rusting of iron substrate.

以丙烯酸丁酯，甲基丙烯酸-β-羟乙酯，丙烯酸及苯乙烯合成厂丙烯酸共聚树脂，并与含-NCO端基的聚氨酯丙烯酸酯接枝反应，经水性化后，得到两个系列（Acr-g-TPU-PETA和Acr-g-PPU-PETA）各5个不同配比的丙烯酸树脂接枝聚氨酯丙烯酸酯自乳化体系，粘度与水相近，为牛顿流体，固含量30％左右。光固化前干燥涂膜的玻璃化转变温度在-15℃～4℃之间，有利于室温下成膜。DSC及DMA谱表明两种树脂基本相容。Acr-g-PU-PETA的热失重行为明显不同于共混材料，接枝样dTG峰明显宽化，表明接枝样中链段之间的相互作刚有多重性，丙烯酸树脂与聚氨酯之间有一定的相容性。接枝树脂自乳化体系光固化涂层的综合性能以聚氨酯丙烯酸酯成分为50％～30％者相对较好，且以Acr-g-TPU-PETA系列更理想。光固化膜的附着力为1～2级，冲击强度为50kg·cm，柔软性多为1mm。以HEMA代替PETA作为接枝树脂的活性基团，碳—碳双键密度太低，光固化膜交联点太少，硬度和附着力均较差。多羟基胺连硫杂蒽酮光引发剂能均匀分散于树脂自乳化体系和接枝树脂干膜中，不出现色斑，光固化膜肖氏硬度一般高于以Irgacure 2959为光引发剂的光固化膜，光泽度及耐丁酮溶剂性能均有所提高，不会诱导铁基生锈，钛白着色对光固化结果几乎没有影响。本论文所合成的多羟基胺连硫杂蒽酮光引发剂IV〓与IV〓为浅黄色，对光固化涂层的颜色干扰较小，为配制钛白着色光固化水性涂料提供了新的光引发剂。水溶性太强的WB 4759在干膜中易聚结析出，且对所附着的铁基有诱导锈蚀作用。

BACKGROUND: The application of polymerized 2-hydroxyethyl methacryate in many organs of living body shows good biocompatibility.

背景：聚甲基丙烯酸β羟乙酯水凝胶在生物体多器官的应用显示了良好的生物相容性。

PAA/PVA IPN hydrogels were prepared by a sequential method by which acrylic acid firstly. polymerizes and cross-links in PVA/water solution with UV irradiation,then PVA physical cross-linked hydrogels are formed in cross-linked PAA networksby freezing-thawing. The orthogonal test design method was used to optimize theexperimental conditions based on the mechanical and swelling properties of thehydrogels. The effect of the PAA and crosslinking agent contents on the microscopicmorphology of the PAA/PVA IPN xerogel was investigated by transmission electronmicroscopy, and on the mechanical properties of the hydogels was studied bymeasurements of mechanical properties.

针对水凝胶强度、生物相容性和刺激响应性的需要，选择了以PVA和PAA为复合水凝胶的基本分子结构；采用顺序IPN方法制备PAA／PVA IPN水凝胶，即将单体丙烯酸与PVA溶液共混，AA经紫外光辐射聚合交联在PVA溶液中形成PAA化学交联网络，再经冰冻—解冻循环过程在PAA网络内形成PVA物理交联网络。

Comparison of coral resorption and bone appositsion with two natural corals of different porosities.

珊瑚人工骨的血液相容性研究和临床应用。

For the first time, we found that the EHFV propagated in HUVEC has a potentiating stimulation to ET-1 and PGI〓 secretion , which may be respensible for the increased plasma ET -1 level and PGI〓 concentration in patients with EHF during the early phase of the disease.

我们的研究结果提示，HUVEC对EHFV敏感，EHFV感染未引起HUVEC的细胞病变，但可抑制HUVEC的增殖，这有可能改变EC的基因调节，或低调，如Ⅷ R：Ag合成障碍，引起止血功能异常；或高调，如主要组织相容性复合物Ⅱ型抗原、干扰素β和内皮细胞白细胞粘附因子的表达增加，增强EC的炎症反应。

Results : MSCs adhered to the surface of material and proliferated in the hole of material.

RGD多肽表面修饰对HA-TCP材料的细胞相容性有明显的优化作用。

Surgical decision making and data set comparisons would be significantly enhanced by a consistent, reproducible system that quantitates the pertinent characteristics of localized renal lesions.

一项定量评估肾脏局部病变相关特征的体系在制定手术方案和比较现有资料方面发挥了重要作用，而且，这一体系的相容性和重复性均不错。

The protection groups in the copolymers which were prepared previously could be removed and the -NH2 and -OH groups could be reconverted. These high active groups can be used to introduce more bioactive groups and molecules so as to simulate the natural environments of ECM, so the biocompatibilities and cells adhesive capabilities between scaffolds and cells could be improved remarkably.

通过脱除共聚物糖基上的保护基团，还原出-OH、-NH_2，这些高活性的基团为进一步引入具有生物活性的功能基团，实现了对细胞外基质的人工模拟，从而调控材料的细胞识别特性，增强材料生物相容性和改善细胞与材料的黏附特性。

However, incompatible sexual beliefs, lifestyle choices, and/or gender role expectations will cause insurmountable rifts.

然而，不相容性的信仰，生活方式的选择，和/或性别角色的期望，会造成不可逾越的裂痕。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。