The bovine pericardial valves usually do not need anticoagulant therapy after implantation, but they are progessively failured in the heart and require reimplantation 5-10 years after their initial implantation.

引起牛心包瓣原發(fā)性損壞的生理學(xué)和病理學(xué)因素與機(jī)械學(xué)因素同等重要538再线视频。從我院再次手術(shù)中收集到的22只失效瓣膜來看本道无码黄色视频在线播放，在瓣架尖端區(qū)和側(cè)邊區(qū)的損壞發(fā)生率分別占30.3％和36％级A现看免费黄色视频，撕裂国产成熟老女人啪、磨損和鈣化的發(fā)生率分別占25.8％色羞羞在线、18％和31.6％自拍日韩欧美激情视频在线观看。

It is caused by Malassezia spp., which is the normal human saprophyte. Under certain conditions, both exogenous and endogenous, the fungus can convert from a yeast to a pathogenic mycelial form. Since the taxonomy of Malassezia spp. has recently been modified to include 7 species, there are several reports on the species from the PV scales, but the results are different.

在一定外源性和內(nèi)源性因素下可引起花斑癬(Pityriasis Versicolor， PV)一区二区爱爱免费看视频，新的分類方法將馬拉色菌分為7個種以來国产乱弄视频，從PV患者分離到菌種構(gòu)成的研究國內(nèi)外均有報道，但結(jié)果很不一致一级做a爱片久人毛片A片，以往的研究方法多為培養(yǎng)法黄色工厂在线视频，受不同菌種的生長速度不同，以及存在菌種的覆蓋和培養(yǎng)基選擇性等因素的影響无码18。

Academic motivation is the tendency to find school-related activation meaningful and worthwhile and therefore attempt to get the maximum benefit from them. It is the key factor of restricting academic behaviors and academic quality, and which forming and developing is influenced by a great deal of factors. Understanding the relationship between emotion, self-knowing and self-evaluation, social-culture factors and academic motivation may be central to developing more effective teaching strategies.

學(xué)習(xí)動機(jī)是指由學(xué)習(xí)需要引起的欧美黑人双飞视频3区，激發(fā)、推動學(xué)生進(jìn)行學(xué)習(xí)活動xxxxxcom，并達(dá)到一定學(xué)習(xí)目標(biāo)的內(nèi)部心理傾向動力717理论电影，是直接推動學(xué)生進(jìn)行學(xué)習(xí)的內(nèi)部動因，是制約學(xué)習(xí)行為和學(xué)習(xí)質(zhì)量的關(guān)鍵因素，其形成和發(fā)展受多種因素的影響免费无遮挡禁18网站。

The results show that population change is the main cause for cultivated land reduction in Suzhou City since the reform and opening. In addition, changes of the urbanization rate and proportion of the tertiary-industry added value to regional GDP of the area also play an important role in the cultivated land reduction. In the scope of observational data, the relationship between the prosperous level and the cultivated land area is similar to the Environmental Kuznets Curve, and Suzhou City is at the early stage of the curve, that is, the period of prominent contradictions.

結(jié)果表明：在諸多影響因素中免费一级黄，人口數(shù)量的變化是引起改革開放以來蘇州市耕地面積減少的主要因素；而第三產(chǎn)業(yè)增加值占地區(qū)生產(chǎn)總值比重和城市化率的變化對耕地面積的減少也發(fā)揮著重要作用国产精品一区二区哟哟视频；在觀測數(shù)據(jù)范圍內(nèi)亚洲男女精品视频在线看，富裕度和耕地面積之間存在類似環(huán)境Kuznets曲線，并且蘇州市正處于該曲線的前期階段com国产，屬于矛盾的凸顯期粗暴大黑鳮巴视频欧美A。

This suggests that tunica intima function of vessel is the main factor to induce carotid atherosclerosis, but the level of serum cholesterol and triacylglycerol are the secondary factors.

說明引起頸動脈粥樣硬化的主要因素是血管內(nèi)膜功能，而血清膽固醇和三酰甘油水平是次要因素99视频这有这里有精品。

Automobile vibration has something to do with many factors, but road unevenness is the main one.

汽車振動與諸多因素有關(guān)AV无码国产精品一区，但路面不平度是最主要的因素，本文模擬分析了由路面不平度引起的汽車振動三级插入小视频在线观看。

This paper summarized factors, both in biologic and abiological aspects that affected successful colonization and activity of bacterial inoculation. The impacts of inoculated bacteria on population structure of specific rhizobacterial communities and environment should also be paid an eye on.

本文主要針對國內(nèi)外在影響微生物根際定殖的因素以及影響引入微生物活性的因素兩方面的研究進(jìn)行綜述国产洗澡网站，同時強(qiáng)調(diào)對接種劑引入所引起的生物種群及生態(tài)環(huán)境變化應(yīng)予以重視。

In recent years, with the development of finance globalization and the advance of the financial reforms in our country, the financial major and important cases caused by "human" factor have happened frequently at home and abroad, forming biggish financial risks.

孫強(qiáng)摘要：近年來视频黄页在线播放免费，隨著金融全球化的發(fā)展以及我國金融改革的推進(jìn)av官方免费网站，國內(nèi)外金融界由于&人&的因素造成的大案要案頻頻爆發(fā)，引起了較大的金融風(fēng)險久草精品视频播放，&人&的因素已日益成為金融監(jiān)管研究的重要課題欧美aaaⅤ西西在线。

Objective To explore the change of serum estradiol (E2) and testosterone concentrations throughout the puberty of girls and estimate the effects of genetic and environmental factors on serum E2 and T concentrations.Methods study population consisted of 180 pairs of twin girls aged 6 to 18 of whom.132 pairs monozygotic twins and 48 pairs dizygotic twins,who were all from Qingdao city of Shandong province.

遺傳與環(huán)境因素對雙生姊妹性激素影響》論文范文由一世教育畢業(yè)論文網(wǎng)收集于網(wǎng)絡(luò)，版權(quán)歸作者所有在线免费观看黄色av，只可觀摩不可抄襲亚洲区欧美区，因抄襲遺傳與環(huán)境因素對雙生姊妹性激素影響引起的版權(quán)糾紛本站概不負(fù)責(zé)，若本站對于該文的展示侵犯了您的權(quán)利九九鲁视频在线观看，請通知我們刪除。

In these prevalent areas of HBV infection and risky regions of HCC,HCV has not become the main and sole etiogenic,neither is it a rare phenomenon.

HCV感染雖非HCC的主要發(fā)病因素日韩无码操逼，HCV引起肝細(xì)胞損傷国产性爱全露a级生片免费观看，增加肝細(xì)胞對HBV 及其它致癌因素如黃曲霉毒素的敏感性，加快肝癌發(fā)生進(jìn)程欧美一区二区二区。