| 1. | Toxicity of fha films is ranked by measure the cell relative proliferation
Fha薄膜的毒性级别为o级或1级，可以认为不表现毒性。
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| 2. | Varying the amount of hpf6 or nh4pf6 added , the fluorine in the fha phase could be tailored
Oh肝亦证明最终制备的样品为ha fa固溶体。
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| 3. | The mode of sediment changes from island shape to layer shape , which is a welcome character for films in actual use
Fha薄膜cpbs浸泡实验结果表明:随着薄膜中氟含量的增加，有更小的溶解性。
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| 4. | It is found that the ca ( no3 ) 2 - po ( oh ) x ( oet ) 3 - x - c2h5oh system with cf3cooh added gives out much gas during heat - treatment which will result in films with many c
Fha薄膜较纯ha薄膜有较好的与基板的结合强度，这得益于两方面：一方面fha热膨胀系数较ha小，与
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| 5. | The distributing of fluorine in films can be controlled by their thickness , which changes according to deferent parameter in preparation . films with five layers have perfect distributing state of fluorine
其氟在fha薄膜中的分布为内外相同，但在经五次涂膜的fha薄膜中，靠近基板附近氟含量有所增加。
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| 6. | The films generated with the preparation method in this work possess of perfect distribution of fluorine , have the same or even better bioactivity in compare with ha and put up long - term effectiveness
本工作中获得的fha薄膜具有理想氟分布，良好的物理化学性能和良好的生物相容性。因此，本论文工作结果无论是在理论上还是在实际应用中，都有一定的指导意义。
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| 7. | The films prepared with different fluorine containing compounds were thoroughly investigated . the quality of the films as well as the film forming ability of the solution of all the three systems are investigated by reflection microscopy and viscosimeter
综合运用sem 、 eds和tem分析了薄膜的结构，发现薄膜从里至外具有tioz层，含氟量相对较少的fha层，含氟量较高的fha层。
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| 8. | According the ftir results , poh shifts to higher wavenumbers with increased fluorine content in the fha phases , which meant in the fha phase the fluorine existed as f - oh chains , it can be concluded that fha phase obtained is actually ha / fa solid solution
研究发现，三种含氟化合物都能够有效地在产物中引入氟形成fha相或fa相。其中， cf3cooh的引氟效率较低，只有1 3左右。 hpf6禾nh4pf6贝有较高的引氟效率。
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| 9. | The films were soaked in sbf simulated body fluid and cpbs phosphate buffer solution , the results showed that the fha films were less soluble than ha films . with the increase of fluorine content , the fha sediment layer in sbf solution becomes more even
Fha薄膜sbf浸泡实验结果表明：随着薄膜中氟含量的增加，薄膜表面上羟浙江大学硕士学往论文基磷灰石沉积层越来越均匀，沉积方式由岛状向层状转变，说明生物活性随之增加。
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| 10. | At first , this thesis analyzes sorts of residential mortgage risks , brings forward some methods of risk control , points out that insurance is the most effective way to transfer the risks of residential mortgage , and introduces some insurances on residential mortgage in domestic financial market and abroad , expounds particularly the successful experience of usa where the business insurance agents , fha and va provide full ensurance for the loans of bank to disperse default risk , thus promotes the prosperity of real estate finance
本论文首先从分析住房抵押贷款的风险种类入手，提出了多种风险处理措施，指出住房抵押贷款风险最有效的转移措施是保险，并介绍了国内外现行住房抵押贷款有关保险，详细阐述了美国的成功经验：通过商业保险公司、 fha 、 va等机构对银行放款提供全方位保障，化解来自借款人不能偿付贷款的风险，促使整个房地产金融活跃起来。
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