Materials Literature
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A facile, industrially viable, one-pot synthesis of 0.5-8 wt% Pt supported on 22 mol% Al-modified ana-tase with high surface area and thermal stability is presented. Four pathways were studied to deter-mine the effects of support properties on catalyst dispersion, and the highest dispersions were observed for high sur…
Giant magnetostrictive actuator (GMA) is a new type of vibration control driving device. Since it has a lot of nonlinear, its performance model has been can't descrip good. This paper describes the self-made physical design of GMA, develop the GMA performance research experiment. For different excitation voltage, GMA…
Neste trabalho foi avaliado o comportamento mecânico dos compositos de polietileno de baixa densidade reforcados com fibras da palmeira. O polietileno de alta densidade (PEBD) foi utilizado como matriz termoplastica devido ao baixo custo e sua temperatura de processamento menor que a temperatura de degradacao da fibra…
he poor economic and environmental sustainability of rocket-based transportation into space has promoted enthusiasm in the development of an alternative method of traveling into space, a space elevator. The method, originally purposed in the 1960s and 1970s, had been abandoned due to a lack of material of sufficient s…
Neste trabalho foi desenvolvido um biocomposito de poliuretano (PU) derivado do oleo de mamona reforcado com fibras da palmeira para aplicacao em palmilhas. Os biocompositos foram obtidos pela mistura em massa, do poliol com o diisocianato, conforme a relacao estequiometrica de 1:0,7. Posteriormente, os bicompositos f…
A new monosubstituted vanadium Keggin-type tungstophosphate derivative, [Ni(phen)3]2[PVW11O40].4H2O (phen = 1,10’-phenanthroline), has been hydrothermally synthesized and characterized by powder and single-crystal XRD methods, scanning electron microscopy (SEM), IR, UV-Vis and photoluminescence spectroscopy measuremen…
O presente trabalho apresenta uma sequência metodológica para fazer a seleção de materiais metálicos para calha de transporte de efluentes oriundo da limpeza de gases de um alto forno. Para sintetizarmos a proposta, utilizaremos três metodologias de análise/apoio para seleção de materiais baseados em literaturas que a…
A madeira plastica tem sido muito utilizada para substituir a madeira convencional, devido a ausencia de manutencao e ao custo comparavel a madeira convencional. Alem disso, as placas sao resistentes a agua, nao soltam farpas, nao sao suscetiveis a cupins e nao mofam. A madeira plastica e geralmente feita com 100% de…
Abstract Two isotypic mononuclear discrete complexes [Co(MeCN)4(tcp)2]·2MeCN (1) and [Ni(MeCN)4(tcp)2]·2MeCN (2) containing the tetracyanopyrrolide anion [C4(CN)4N]– (tcp) were synthesized from [Me4N]tcp and the respective metal perchlorates in acetone/acetonitrile. Tcp coordinates to the transition metal atoms in η1…
Nanopartículas magnéticas de Fe:Ga fueron sintetizadas por el método de sol-gel por autocombustión de citratos a diferentes temperaturas de tratamiento térmico. El tratamiento térmico de 300 a 400 °C permitió obtener partículas con una estructura de espinela Fe1.4Ga1.6O4, caracterizadas por la técnica de difracción de…
Purpose – This paper aims to demonstrate the functionalization of polyamide parts made by selective laser sintering (SLS) for application as substrates for chemical analysis by surface-enhanced Raman scattering (SERS). Design/methodology/approach – Fabrication of Nylon 12 (Duraform PA®) samples using two laser power l…
Protein-Based Hydrogels - 1
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Bu çalışmada, yüksek güçlü femtosaniye laserle birlikte TOF-MS kullanılarak C n topak moleküllerinin ve özellikle C 60 fullerene molekülünün üretimi ortaya konmaktadır.Buna ilave olarak kütle spektrumundaki pik deseninin laser gücüne bağlılığı ortaya konmaktadır.Kütle spektrumunda C 60 molekülünün fragmentasyon deseni…
Pyruvic acid is an important intermediate used in the synthesis of organic and pharamacal products. In this article, highly valued pyruvic acid was synthesized via the oxidative dehydrogenation of low-cost lactic acid catalyzed by Mo-V-Nb multi-component oxides at a low temperature. The phase composition and morpholog…
벤젠은 발암성을 가진 유해성 대기 오염물질로 특별한 관리가 필요하다. 특히 벤젠은 실외 뿐만 아니라 실내에서도 존재하기 때문에 실내외를 구분하여 적절한 처리 방법이 요구된다. 실외의 공정에서 배출되는 VOC는 촉매 산화법을 통하여 $300-400^{\circ}C$ 에서 제거하는 것이 바람직하지만, 실내의 경우는 $100^{\circ}C$ 이하 혹은 실온에서 제거되는 것이 바람직하다. 본 총설은 촉매산화법, 촉매오존산화법 등 다양한 촉매 벤젠 산화법의 최근 동향을 다루고 있으며, 특히 저온산화반응을 위해 Mn 기반 촉매에 중점을 두고 조사하였다. Mn 기반 촉매는 다…
The study aimed at exploring the anti-diabetic effect of the seed flour of Dioclea reflexa on alloxan-induced diabetic rats. Thirty Wistar rats of both sexes were exposed to respective doses of the seed flour and the standardized drugs (Gliclazide 6.1 mg/kd body weight and Metformin 60 mg/kg body weight) according to…
The AC magnetic susceptibility is a fundamental method in materials science, which allows to probe the dynamic magnetic response of magnetic materials and superconductors. The LAMPS laboratory at the Laboratori Nazionali di Frascati of the INFN hosts an AC multi-harmonic magnetometer that allows performing experiments…
The phase equilibrium of the system As2S3–Cu2S–PbS and its pseudo binaries with low arsenic contents were studied using isothermal equilibrium and quenching experiments at temperatures between 773 and 1173 K. Based on the experimental results, the phase diagrams of these systems have been estimated. Both estimated pse…
In this paper, X-ray powder diffraction data, unit-cell parameters, and space group for bisacodyl, C 22 H 19 NO 4 , are reported [ a = 9.081(3) Å, b = 10.631(5) Å, c = 11.549(6) Å, α = 111.492(4)°, β = 108.082(3)°, γ = 101.501(3)°, unit-cell volume V = 922.368 Å 3 , Z = 2, and space group P -1]. All measured lines wer…