Materials Literature
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The development of drug delivery systems (DDS) for targeted intracellular delivery of therapeutic agents has been attracting great deal of attention. In traumatic central nervous system conditions, where therapies have been revealing to be highly inneficient and non-specific, these targeted DDS could be highly benefic…
Abandoned mine drainage is a serious environmental problem. Vairous heavy metal such as copper, lead, and zinc from the mine drainage caused groundwater and soil contamination. The purpose of this study was to investigate the feasibility of peatmoss as a cost effective adsorbent for removal of heavy metals. In order t…
The jet-propulsion microengine has been developed based on porous silicon combustion process. This microengine includes a combustion chamber formed in macropores of a silicon substrate, nozzles based on pyramidal pits and nanoporous silicon impregnated by solid state oxidants as a fuel. The fabricated microengine has…
Deuterium retention and trapping in tungsten plasma sprayed layers after low energy plasma irradiation was investigated by means of thermal desorption technique. Plasma irradiation at low temperatures (<650 K) showed the retention and trapping similar to polycrystalline tungsten material. On the other hand, irradiatio…
Heat Shock Protein 90 (Hsp90) is a molecular chaperone which plays an active role in maintaining protein homeostasis. Hsp90 is known to be highly expressed in tumour cells where it regulates stability and function of several key oncogenic client proteins including Akt kinase, EGFR, CDK and PDGFR. These client proteins…
Salah satu yang mempengaruhi deformasi dan tegangan sisa pada pengelasan pipa adalah pemasangan tanggem. Penelitian ini bertujuan untuk mengetahui deformasi dan tegangan sisa pada pengelasan pipa carbon steel dengan variasi pemasangan tanggem. Dilakukan analisa pemodelan ANSYS yang hasilnya divalidasikan dengan hasil…
Research into bone tissue regeneration and substitution is one of the most important components of tissue engineering. In compliance with these requirements, bone implants have been developed which allow cell migration, Revista Cubana de Investigaciones Biomedicas. 2012; 31(2):318-331 http://scielo.sld.cu 319 tissue g…
مقدمه: استحکام شکست پایین سرامیکها از مهمترین معایب رستوریشنهای تمام سرامیک است.هدف از مطالعه حاضر ارزیابی اثر دو فاکتور درجه تقارب و تغییر ضخامت کوپینگ ناشی از آن بر استحکام شکست روکشهای تمام سرامیک بود. مواد و روش ها: در این مطالعه آزمایشگاهی، 30 کور برنجی به شکل کرونهایی به ارتفاع mm5/5 و عرض قاعده mm4/6 و ضخام…
Abstract : The objectives of this demonstration are to (1) provide a full-scale validation of the low volatile organic compound (VOC) barrier coating (LVBC) for use as an architectural and industrial maintenance (AIM) coating, (2) assist in the transition of a nonaircraft topcoating using the zero- VOC topcoat (ZVT) (…
The calcium hydroxide(Ca(OH)₂) which is the cement hydrate flowed into the tunnel by groundwater is reacted with microorganism in the soil, carbon dioxide(CO₂) and the vehicle’s exhaust gas(SO₃). So its by-products are precipitated at the drainage pipe and these cause the drainage clogging. By this phenomenon, Degrada…
\nW artykule przedstawiono wyniki badań mikrostruktury powłok natryskiwanych metodą płomieniowo-proszkową mieszaninami proszków NiMoAl/ZrO2-30% CaO oraz NiAlMo/Al2O3-40% TiO2. Skład fazowy określono metodą XRD i wykazano, że w powłoce ZrO2 – 30% CaO występują fazy ZrO2 oraz CaZrO3, a w powłoce Al2O3-40% TiO2 – β tytan…
Different Mg-based alloys were tailored and prepared to investigate the surface and bulk processes during hydrogen absorption. Volumetric-, resistance-, XRD-, optical-, and mass measurements were carried out. Heat treatment experiments showed that the short-term thermal stability limits (during heating up at 5 K/min)…
This work was carried out a mineralogical and morphological characterization of minerals in the bauxite deposit of Los Pijiguaos, Bolivar State. It was achieved separation of neoformed minerals (clays size fraction) presents in bauxite through the technique of ultrasonic agitation, which prevents the alteration of the…
Abstract : The hypothesis of this research is that inhalable SPIO nanoparticles surface-functionalized with EGFR targeting ligand, when exposed to an appropriate magnetic field, will enable highly efficient and specific tumor cell death by hyperthermia. In the final year (no-cost extension) of this research program, w…
Este trabalho é baseado no estudo de polímeros termossensíveis para o seu uso como sensores de temperatura na superfície da pele do bebé. \nDe acordo com alguns pediatras, a temperatura da pele do bebé pode variar entre os 35°C e os 37,8°C. Normalmente, eles apresentam uma temperatura superior à de um adulto, uma vez…
La préparation de polymères à base d’acides biliaires, molécules biologiques, a attiré l'attention des chercheurs en raison des applications potentielles dans les domaines biomédicaux et pharmaceutiques. L’objectif de ce travail est de synthétiser de nouveaux biopolymères dont la chaîne principale est constituée d’uni…
Major findings in the field of modeling of thermal stress in electronic and photonic systems are briefly discussed, with an emphasis on analytical modeling. The addressed areas include the role and significance of thermal stress modeling; bi-metal thermostats and bi-material assemblies models, employed in electronics…
An adaptive eXtended Bridging Scale Method (XBSM) method is developed to analyse the coupled continuum-atomistic model for crack propogation studies using the minimum energy criteria. Cracks in the atomistic domain are modelled by removing the bonds between the atoms and phantom node method is used to model the crack…
摘要： 采用焙烧还原法制备了镁铝水滑石负载MnO-4催化剂，并将其应用于催化氧气氧化乙苯合成苯乙酮的反应中。 考察了催化剂用量、反应温度、反应时间、MnO-4负载量和镁铝比等因素对催化氧化反应的影响及催化剂的重复使用性能。 在优化条件下：催化剂用量3 g，乙苯用量45 mL，反应温度120 ℃，水滑石结构中n(Mg)/n(Al)=5，氧气流量100 mL/min，苯乙酮产率可达57.0%，苯乙酮选择性可达96.3%，催化剂重复使用3次催化活性降低较小。
In this work we considered the evolution of structural and morphological characteristics of carbon condensates during their growing within the accumulative plasma-condensate system, which allows carrying out the technological process near the point of thermodynamic equilibrium. The condensates have been studied with T…