Materials Literature
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为克服通常丙烯酰胺（AM）类油包水乳液的不稳定性及减少油相，研究了在油包水“多面液胞”（W／OPHC）中进行的AM类水溶性单体的自由基接枝聚合反应．首次引入水滑石（LDH3）作为接枝骨架，合成一系列W／OPHC型阳离子、阴阳离子型的有机-无机两性LDH3接枝共聚产物．重点报道该新型聚合反应过程，从动力学角度研究其最佳反应条件；用透射电镜（TEM）表征PHC在W／O乳液中的百分率和PHC的体积大小；用红外表征最终产物的结构．这类产物是目前最新开发的高效多功能水处理剂，可用于絮凝剂和污泥脱水剂等．
고밀도·고성능 차세대 정보 저장 및 기록 매체의 요구에 대한 대안으로 나노자성재료의 응용이 주목을 받게 되었다. 크기가 작은 나노자성입자들은 자기기록매체의 기본 구조 물질이다. 그 중 초고밀도 기록매체로 주목을 받고 있는 FePt 합금은 자성재료 중 높은 자기이방성과 화학안정성을 갖고 있는 중요한 재료로 주목을 받고 있다. 본 연구에서는 나노크기 FePt 입자를 합성하는 여러 가지 방법들 중에서 Fe(Co)5를 사용하여 합성을 한 사례가 다수 보고되어 있지만 독성을 가지고 있기 때문에, 대신 Fe(acetylacetonate)3를 사용하여 열분해법으로 나노크기의 F…
采用电沉积方法在铂基体上制备了十二烷基磺酸根掺杂聚吡咯(PPy/DS-)薄膜。通过电化学石英晶体微天平技术探讨了膜的聚合机制,并结合循环伏安法和XPS能谱考察了PPy/DS-薄膜在碱金属和碱土金属溶液中的电化学行为和离子置入/置出机制。结果表明:PPy/DS-薄膜具有良好的电活性;膜电极在进行氧化还原扫描的同时伴随有阴/阳离子的交换,通过控制电位可单独实现阳(阴)离子的交换过程;电压范围为-1.05～0.14V时,薄膜在CsNO3溶液中循环扫描只伴随着Cs+的交换;PPy/DS-薄膜在碱金属溶液中的稳定性高于碱土金属溶液,尤其在CsNO3溶液中显示了良好的稳定性。PPy/DS-膜可用作优良的电控离子交换材料分离Cs离子。
研究了“淬火-配分-（回火）”（Q-P（-T））工艺处理对35Si2Ni2钢显微组织和力学性能的影响，并与传统的淬火回火（Q-T）工艺进行比较，用SEM、TEM、XRD分析了微观组织。试验结果表明：相对于传统Q-T工艺，经Q-P工艺处理后得到了较多的残余奥氏体，强度水平稍有降低，而塑韧性明显提高，经Q-P32艺处理后再进行回火处理，残余奥氏体分解，析出e碳化物，导致Q-P工艺处理钢的屈服强度升高，屈强比升高。
目的：评价新型医用无镍不锈钢（BIOSSN4）的细胞毒性。方法：将BIOSSN4的浸提液与体外培养的小鼠成纤维细胞L929接触后,进行MTT实验来评定材料的细胞毒性,并与传统的医用316L不锈钢的生物学性能相比较。结果：BIOSSN4对细胞增殖的抑制作用小于316L不锈钢组,统计学分析结果显示：两种金属材料与阴性对照组的吸光度值之间的差异无统计学意义（P〉0.05）,与阳性对照组之间的吸光度值之间的差异有统计学意义（P〈0.05）。结论：BIOSSN4无镍不锈钢具有微弱的细胞毒性,符合临床应用要求,为其应用提供了一定的生物学依据。
研究了在不同温度下的NaNO3和AgNO3水溶液中Li1.3Ti1.7Al0.3（PO4）3和Na1.3Ti1.7Al0.3（PO4）3离子交换行为.实验表明Li1.3Ti1.7Al0.3（PO4）3和Na1.3Ti1.7Al0.3（PO4）3均显示出了高选择性与Na＋和Ag＋进行离子交换的特征,且对Ag＋的选择性高于Na＋.升高温度可显著提高Ag/Li和Ag/Na的交换反应速度.
采用聚二甲基硅烷（PDMS）和二茂铁合成了聚铁碳硅烷（PFCS）,PFCS高温烧成可制成磁性纳米Fe3Si/SiC复合陶瓷吸收剂。研究了铁含量、烧成温度和保温时间等因素对吸收剂电磁参数的影响。结果表明：随着铁含量增加、烧成温度提高和保温时间延长,吸收剂的复介电常数的e＇、e″和er明显增大。
以钛酸四正丁酯和无水乙醇为主要原料,掺杂一定比例的Fe3+,采用溶胶-凝胶法(Sol-Gel)制备TiO2-Fe2O3复合催化剂,并用XRD和SEM等手段进行表征。以4-(2-吡啶偶氮)间苯二酚(PAR)光催化降解为模型反应,在可见光条件下对所制备的催化剂催化性能进行表征和评价。结果表明:掺铁TiO2比不掺杂TiO2有更高的催化活性,同时也验证掺铁量在0.5%时,光催化活性最高。焙烧温度在400℃时,催化活性大。
Polylactide (PLA) is considered a good alternative to fossil fuel based plastics as it is biodegradable and nontoxic to human. However PLA crystallize at a very low rate and has a relatively low melting temperature (Tm) in comparison with other commercial polymers. PLLA/PDLA stereocomplex has been expected to be poten…
利用水热合成法制备了一种基于[Cu（en）2]^2＋修饰的仲钨酸化合物：[{Na3（H2O）10}2H2{Cu（en）2（H2W12O42）}].16H2O（en=乙二胺）（1）,借助元素分析、X射线单晶衍射分析I、R、UV、热分析和X射线光电子能谱对这种化合物进行了结构和性质研究.化合物（1）属于三斜晶系,P-1空间群.晶胞参数为：a=1.183 2（5）nm,b=1.296 0（6）nm,c=1.416 9（6）nm,α=63.348 0（10）°,β=82.844 0（10）°,γ=68.907 0（10）°,V=1.810 0（14）nm3,Z=1,R1[I〉2σ（I）]=0.024 7,wR2[I〉2σ（I）]=0.05…
通过4，6-二氨基间苯二酚（DADHP）、对苯二甲酸（PTA）和羧酸化单壁碳纳米管（SWNT-COOH，SWNT经强氧化酸处理获得）之间的络合反应，合成了用于PBO／SWNT聚合的复合物（DADHP-PTA-SWNT-COOH络合盐），并成功制备了一系列SWNT含量不同的PBO／SWNT复合材料。对SWNT—COOH、DADHP／PTMSWNT—COOH络合盐和PBO／SWNT复合材料进行傅立叶红外光谱和扫描电子显微镜表征。结果表明：经过酸处理后，SWNT获得羧基，表面极性功能基团数量增加，在聚合物基体中的分散性提高，SWNT用量为2．5％时，分散效果最佳。
The linear correlation between the polarizability of a fullerene and its size has been found. It allows predicting the average polarizability of higher fullerenes with high accuracy.
通过熔融法分别制备了三元乙丙橡胶（EPDM）/纳米碳酸（nano-CaCO3）交联母料及其与聚酰胺6（PA6）共混的三元复合材料。利用场发射扫描电子显微镜研究了EPDM交联对PA6/EPDM/nano-CaCO3三元复合材料形态的影响。结果表明，随着过氧化二异丙苯（DCP）含量从0.30 %（质量分数，下同）降低到0时，PA6/EPDM/nano-CaCO3三元复合材料中＂沙袋结构＂粒子粒径变小；冲击强度从 22kJ/m2提高到47 kJ/m2；拉伸强度和弯曲强度变化不明显。在受到外力作用时，含有均匀分散的＂沙袋结构＂粒子的三元复合材料通过＂沙袋结构＂粒子诱发纤微化和＂扩张带＂耗散外界作用能。
ΔΗΜΗΤΡΙΟΣ ΒΑΣΙΛΑΚΟΣΚΑΘΗΓΗΤΗΣ ΧΑΡΙΣΙΟΣ ΣΚΟΥΡΤΗΣ ΑΝ
[Objective] The research aimed to study the extraction of insoluble dietary fiber(IDF) from bamboo shoot basis on enzymolysis method.[Method] The orthogonal design method was used to study the extraction conditions of bamboo shoot IDF.[Result] The results showed that the influence degree of different factors to extrac…
The work aims at the evaluation of prospects for using glyceraldehyde and threose as a cross-linking agent for stop myopic progression and recovery of mechanical properties of scleral tissue. Stability parameters (denaturation temperature, Youngs modulus, proteolytic resistance) and fluorescence intensity were monitor…
ელექტროძიების ექსპრეს-მეთოდით პროგრამული უზრუნველყოფის IPI2WIN გამოყენებით კვლევის მიზანს წარმოადგენს ბაკურიანის პლატოზე გავრცელებული ნალექების საინჟინრო-გეოლოგიური და ჰიდროგეოლოგიური პირობების დაზუსტება ცენტრალური პროფილის მაგალითზე. \n\tIPI2WIN პროგრამული უზრუნველყოფით მიღებული კუთრი ელექტრული წინაღობის ჭრილი კარგ თ…
Silicon is currently the most common material used to manufacture photovoltaic cells. The materials and manufacturing processes are the subject of ambitious research programs to reduce the overall production costs, and increase efficiency and lifetime of photovoltaic cells. This paper addresses the use of magnetic fie…
The ground surface perturbation lattice (GSPL) is proposed to suppress parallel-plate noise in mixed signal systems. The design concept of the GSPL structure consists of circular pads and multiple vias in order to enhance the bandwidth of the mushroom like EBG structure. The present paper investigates the usability of…
A series of Tb3+-,Ce3+-doped,and Tb3+/Ce3+-codoped silicate glasses were synthesized by melt-quenching technique.Some properties of the investigated glasses were characterized by X-ray photoelectron spectroscopy(XPS),photoluminescence(PL),X-ray excited luminescence(XEL) and thermoluminescence(TL) spectra.The result of…