国际生物材料杂志

膜援助的引导骨再生（GBR）过程一直是造成这种修复过程兼容生物材料研究的课题。通过评估GBR以及组织学，组织形态测定，和免疫组织化学反应在颅盖大鼠的临界尺寸缺损用于本研究比较不同的膜。48只雄性白化病Wistar大鼠随机分为四组（ñC:无膜对照组(仅血液凝块，阴性对照组);BG:猪胶原膜组(Bio-Gide®，阳性对照组);GD:牛皮层膜组(第一实验组);GDF:较厚的牛皮层膜组(第二实验组)。术后30天和60天处死大鼠。定量数据从组织学分析被提交到双向方差分析和Tukey的后测时 。在30和60天较厚牛皮质膜的组织形态计量学的结果是有希望的，示出改进的新骨形成的值（ ）和CD组呈现相似的结果在这两个分析期间，仅由GDF组被超过（ ）。免疫组化结果与组织形态学数据相关。较薄的膜也有助于GBR。各膜对GBR均有促进作用，尤其是阳性对照组和实验组。

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从竹叶作为一个潜在的能源生物炭是由在无氧环境中退火合成。使用近似分析样品进行表征，傅立叶变换红外（FTIR），X射线衍射（XRD），扫描电子显微镜（SEM）和能量色散谱（EDS）。加热温度是250℃，300℃，350℃以及对于每个温度，时间为30分钟，60分钟和90分钟之间变化。The heating time for 30 minutes results in FC 30.777% and calorific value 15 MJ/Kg at temperature 250°C and decreased to 4.004% and 6 MJ/Kg at temperature 350°C, respectively. EDS shows the time of heating is an important parameter which shows the carbon and nitrogen contents were decreasing with the increase in the heating time, and silicon and oxygen contents were increasing with increase in the heating time. XRD shows broad (002) reflections between 20° and 30°, which indicated disordered carbon with small domains of coherent and parallel stacking of the graphene sheets, which is consistent with surface morphology of the SEM image. The experimental results indicated that heating at 300°C for 30 minutes is an effective and efficient parameter for fabrication of low-cost carbon from bamboo leaves which is a source of useful energy.

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另外，在本工作中，十六烷基三甲基溴改性棕榈油纤维的有用性（CTAB改性POF）用于除去靛蓝胭脂红（IC），并从水溶液中2,6-二氯靛酚（2,6-DCPIP）的进行了研究。原料，加入NaOH处理过的，和CTAB改性POF的特点是傅里叶变换红外（FT-IR）光谱法，元素分析，热重 - hyperdifferential示扫描量热（TG-HDSC）分析，X射线衍射（XRD）和扫描电子显微镜（SEM）。IC和2,6- DCPIP的吸附研究使用CTAB改性POF以分批模式进行。结果表明，平衡物30分钟为IC和20分钟，2,6- DCPIP的接触时间之后获得。The maximum capacity of adsorption was obtained at pH = 2. The capacity of adsorption considerably increased with modified biosorbents and with increasing initial concentration of dyes. The ionic strength favors the increasing adsorption capacity of IC and does not affect the adsorption capacity of 2,6-DCPIP. The percentage of adsorption increased with increasing mass of the biosorbents. The nonlinear regression of adsorption isotherms showed that Freundlich ([R² 0.953; = 4.398) and Temkin ([R²  0.986;= 1.196)等温线最适合描述IC和2,6- dcpip在ctab改性POF上的吸附。Langmuir等温线测定的最大吸附量分别为275.426和230.423μ摩尔·克^-1分别为IC和2,6- dcpip。吸附动力学的线性回归用伪二阶模型([R² 0.998)。扩散机理表明，外传质是主要的速率控制步骤。这两种染料在碱性介质中解吸是有利的。

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问题的声明。制造技术，precementation，和胶结手术过程可诱导强调图案的显著修改整个牙科陶瓷材料的某些类的厚度。目标。通过挠度试验，评估修复性牙体陶瓷在加工工艺、预压、树脂水泥涂层等过程中的残余应力，并将其与所测试陶瓷材料的弹性性能联系起来。材料和方法。From IPS e.max® Press, lithium disilicate heat-pressed glass-ceramic (elastic modulus of 95 ± 5 GPa) disc-shaped specimens (ñ = 10) were made according to the manufacturer’s instructions. One surface of the specimens was polished to provide accurate baseline profilometric measurements (reference surface). Deflection measurements were performed after polishing and annealing alumina air-particle abrasion of the unpolished surface followed by resin cement coating of the alumina air-particle abraded surface. The specimens were reprofiled at 24, 48, and 168 hrs after coating. The Friedman test followed by Dunn’s multiple comparison test was employed to identify significant differences ( ）。To compare the difference in mean of maximum mechanical deflection, after cement coating at 0 hr, between two different ceramic materials (IPS e.max Press and Vitadur Alpha (result from another study)), Student’sŤ-test用于不成对数据进行。结果。基线轮廓测量确定了陶瓷圆盘抛光表面的凸形，其最大机械挠度平均值为4.45±0.87μ米未抛光表面的氧化铝空气颗粒研磨后的研磨样品的凸甲显著减少的特征。树脂水泥，涂布后的平均偏转显著上升，并没有在所研究的时间而改变。结论。介绍了氧化铝气粒磨耗和胶结的工艺过程。max®压力机玻璃陶瓷圆盘形试样产生应力，引起机械变形。然而，具有较高弹性模量(刚性)的牙科陶瓷材料将使应力诱导的机械变形最小化。

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癌症是一种世界性的高发病率和高死亡率的非传染性疾病。泰国国家癌症研究所报告说，乳腺癌、结肠直肠癌、肝癌、肺癌和宫颈癌的累积发病率在增加，占该国所有癌症的60%以上。在目前的工作中，我们试图阐明秋葵的植物化学成分(现esculentus（L.）荞）籽提取物（OSE）和研究在三个细胞系（MCF-7，HeLa细胞，和HepG2）其抗癌活性，在其天然形式递送，以及在与增强的溶解性聚合物胶束的形式，。在OSE黄酮类化合物的存在下被成功地证实，和直接递送对乳腺癌细胞系的最高细胞毒性作用（MCF-7），其次是肝细胞癌（肝癌）和宫颈癌（HeLa细胞）细胞系在该顺序，而其在聚合物胶束输送仅在HepG2细胞进一步提高这种效果。The OSE’s observed cytotoxic effects on cancer cell lines demonstrated a dose and time-dependent cell proliferation and migration inhibition plausibly due to VEGF production inhibition, leading to apoptosis and cell death, conceivably due to the four flavonoid compounds noted in the current study, one of which was isoquercitrin. However, in view of the latter compound’s isolated effects being inferior to those observed by the OSE, we hypothesize that either isoquercitrin requires the biological synergy of any one or all of the observed flavonoids or any of the three in isolation or all in concert are responsible. Further studies are required to elucidate the nature of the three unknown compounds. Furthermore, as we encountered significant problems in dissolving the okra seed extract and creating the polymeric micelles, further studies are needed to devise a clinically beneficial delivery and targeting system.

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客观的。这个在体外本研究旨在评价Er、Cr:YSGG激光对氧化锆与玻璃纤维桩与牙本质结合强度的影响。材料和方法。90颗拔出的单根人类牙齿被随机分为6组(ñ = 15/group) on the basis of different posts (zirconia/glass fiber) and Er,Cr:YSGG laser tips (axial and radial). Specimens were prepared for push-out testing with the help of a cutting machine; six slices (2 on each cervical, middle, and apical) of approximately 1 mm thickness were sectioned for all roots on a plane perpendicular to the long axis of the post. All specimens were placed into a universal testing machine with a defined 0.5 mm/min crosshead speed until the maximum failure load was obtained.结果。玻璃纤维和氧化锆基的最高平均压出粘结强度用激光治疗来实现。The highest push-out bond strength was achieved with the axial fiber tip (7.63 ± 1.22 MPa), and the lowest was achieved with a radial fiber tip of the glass fiber group (6.98 ± 0.96 MPa). ANOVA showed a statistically significant difference between the groups ( ）。平均压出粘结强度被发现具有轴向纤维尖端在玻璃纤维和氧化锆基既宫颈和心尖段（要高 ）。独立Ť-试验结果显示，根尖节段的整体平均推拉结合强度最高( ）。结论。在本的限制在体外在研究中，采用轴向光纤尖端Er、Cr:YSGG激光照射后，树脂水泥的推出粘结强度得到增强，主要在根管颈部区域。

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