Materials Literature
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Estudios estructurales sobre entidades tiosemicarbazonacobre(II) y su interacción con polioxometalatos y biomoléculas. Síntesis, estabilidad y propiedades magnéticas” \n\tEl presente Trabajo ahonda en la síntesis y caracterización de nuevos derivados de Cu(II) con los ligandos 2–piridinacarbaldehído tiosemicarbazona (…
Firstly, I would like to thank Professor Natália Alves, my
将新合成的4-（4-（（4-乙氧基苯基）偶氮）苯氧基）-N-（2-（甲基丙烯酰氧基）乙基）-N,N-二甲基丁烷-1-溴化铵（DMAE-EAPB）和N-异丙基丙烯酰胺凝胶（NIPAm）共聚,制备得温度/光双重敏感共聚物凝胶.用差示扫描量热法、紫外-可见吸收光谱法和称重法对其溶胀性能进行了研究,结果表明：凝胶光响应速度非常快,紫外光照射4 min,偶氮苯反-顺结构转化达到平衡;随着DMAE-EAPB加入量的增加,共聚物水凝胶的相转变温度（LSCT）逐渐减小,温度敏感性变差,紫外光照射后共聚物的LSCT回升约0.8～1.2℃,温度敏感性也有所好转;另外,在一定的温度范围内,紫外光照射可以使共聚凝胶的溶胀比提高0.34～0.80.
A modified model, a set of rate equations based on time-dependent correlation function, is used to study vibrational relaxation dynamics in transient grating spectroscopy. The dephasing, the population dynamics, and the vibrational coherence concerning two vibrational states are observed respectively in organic dye IR…
Zhang Y J et al.[Zhang Y J,Zhang Z D,Zhu L Z and Xuan L 2011 Liquid Cryst.38 355] investigated the effects of finite polar anchoring on the azimuthal anchoring energy at a grooved interface,in which polar anchoring was isotropic in the local tangent plane of the surface.In this paper,we investigate the effects of both…
利用Gleeble-1500D热模拟试验机对低成本钛合金Ti-3.0Al-3.7Cr-2.0Fe-0.1B的热压缩行为进行研究。采用的应变速率分别为0.01、0.1、1.0和10s1,选用的温度分别为800、850、900和950°C,试样的变形量最大为70%。结果表明：峰值流变应力随着温度的增加和应变速率的降低而降低;根据Arrhenius公式获得该合金在本实验条件下的本构方程为e＆=6.1×1012[sinh（0.0113044σ）]3.35×exp（-261719.8/RT）,并得到了该合金的加工图。当应变速率大于等于1.0s1时,合金内发生动态再结晶现象,且应变速率越大动态再结晶现象越明显。
The effects of P2O5 oxide on microstructure, dielectric and piezoelectric properties of Pb0.98Ca0.02[{(Zr0.52Ti0.48)0.98( Cr3+1/2,Ta5+1/2)0.02}1–zPz]O3 ternary ceramics were investigated. Specimens with various contents of P2O5 from 0 to 12 wt. % were prepared by a conventional oxide mixing technique. The effect of P2…
In this study, the novel dissoluble homo-/co-polymers was synthesized with chemical modification. The chemical structure of this amphiphilic copolymer was characterized by FT-IR, 1H-nuclear magnetic resonance and 13C-, 29Si-solid state nuclear magnetic resonance. In addition, the characteristics of amphiphilic copolym…
This dissertation presents a successful mitigation experience of ferroresonance (FR) with a Damping Reactor(DR) involving electromagnetic type Potential Transformers(PTs) of a 161 kV Gas Insulated Switchgear(GIS) in Taiwan. PTs have a typically low thermal capacity and high accuracy due to their measuring functions. L…
초임계 CO2(scCO2)를 사용하여 poly(butylene succinate) (PBS)를 발포하였다. PBS는 용융 강도를 높이기 위하여 반응 컴파운딩 기법으로 개질하였다. scCO2로 포화된 PBS를 강하 융점 이상의 온도에서 빠르게 압력을 낮춤으로써 미세기포 발포체를 제조하였다. 발포체의 구조는 공정 조건을 변화시켜 제어할 수 있었다. 다른 변수들은 고정하고 발포 온도만 변화시킨 실험은 발포 온도가 높을수록 셀 크기는 증가하고, 셀 밀도는 감소함을 보여 주었다. 포화 압력이 클수록 기핵 밀도가 높아졌으며, 그 결과로 셀의 크기는 감소하였다. 감압 속도가 느…
Болтаев Петр Иванович. Доктор технических наук, помощник Генерального конструктора, Государственный ракетный центр имени академика В.П. Макеева. Область научных интересов – проектирование конструкций из композиционных материалов, устойчивость металлокомпозитных конструкций летательных аппаратов. Тел.: (351) 328-61-29;…
利用水热反应和高温退火,在100 nm孔径的多孔氧化铝(AAO)模板表面制备了GdBO3∶Eu3+/AAO发光薄膜。通过X射线粉末衍射(XRD)、扫描电子显微镜(SEM)和光致发光(PL)等手段表征了GdBO3∶Eu3+/AAO薄膜的结构、形貌和发光性质。SEM显示GdBO3∶Eu3+/AAO的形貌可通过调节退火温度控制。XRD和PL的结果表明,在AAO模板的表面所组装的GdBO3∶Eu3+为六方碳钙石型(Vaterite-type)结构。PL的结果表明:5D0→7F2和5D0→7F1的相对发射强度与退火温度有关,5D0→7F2红色发射与5D0→7F1橙色发射之比值随退火温度的降低而增加,降低...
Nanocomposite materials are composed of two or more different materials having different physical properties forming distinct ‘phases’. At least one of these constituents has dimensions of the order of the nanometre and the properties of these nanoparticles lead to the creation of a unique composite material. In parti…
In Leichtwasserreaktoren (LWR) entstehen langlebige und radiologisch toxische Nuklide, wie z. B. Plutonium und Minore Aktinide (Neptunium, Americium, Curium, ...), die nach der Brennelemententnahme für lange Zeit sicher verwahrt werden müssen. Zur Reduzierung des hochradioaktiven, langlebigen Materials wird unter ande…
The Scanning Electron Microscope (SEM) is used to characterize the morphology of ball milled graphite samples, which can be helpful for the further understanding of the samples' spectroscopic and absorptive properties.
Comparative studies of the local anaesthetic activity of the combination of inocaine + visitone-PEG at 1 and 24 hour exposure under ventral chamber anesthesia of a rabbit eye have been conducted. It has been revealed that the combination inocaine + visitone PEG at 1 and especially 24-hour exposure exceeds inocaine pre…
This research develops three efficient textile flaw detection methods to facilitate automated textile inspection for the textile-related industries. Their novelty lies in detecting flaws with knowledge directly extracted from textile images, unlike existing methods which detect flaws with empirically specified texture…
By method of compilation are investigated of phase balance of system Na, K, Mg, Ca // SO 4, Cl-H 2O at 50oС in area crystallization of kainit (KCl∙ MgSO 4∙ 3H 2O). Is established, that as the equilibrium phase of the investigated system at 50oС participates in formation 19 invariant of points, 38 monoalternative curve…
The modulus of elasticity of a homogeneous body is the same for all directions. No known crystalline materials have a Young's modulus that is the same in all directions. The linear theory of elasticity states that strain is proportional to stress so that a straight line is obtained in a stress versus strain plot. As l…
Development of regenerated cellulose reinforcement fabrics and their use in structural composites