Materials Literature
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The objective of the present article is to examine whether current regulations at the European level are capable of adequately controlling the risks associated with engineered nanomaterials of anthropogenic origin (ENM) in food products. In this context it is crucial to examine closely the Novel Food Regulation (EC) 2…
Bernard O'Donoghue's poem 'What's the Time, Mr Wolf?' in his collection Gunpowder (1995) opens with a snatch of hearsay about the amorphous inorganic material that casts its lustre on our lives: Glass, someone once told me, is a liquid Of such density that its sluggish Downward seep takes centuries to work, So medieva…
Application of microwave radiation for the treatment of two different series of prepared hexagonal barium ferrite was done. The treated hexagonal barium ferrite was prepared by sol gel autocombusion technique. The first series was calcinated at 850°C for 4 hours while the other was calcinated at 950°C for 5 hours. Bot…
At first, an unsaturated monomer bearing luminescence group, acryloylfluorescein was synthesized from fluorescein and acryloyl chloride by simple method and was identified by IR, MS and (1)H NMR spectra. The homopolymer of monomer was obtained with solution polymerization and the average molecular weights obtained was…
In this paper, the morphological transformations in Hibiscus sabdariffa (Roselle) stem fibre on graft copolymerisation with acrylonitrile (AN) as principal monomer and its binary mixture with 2–vinyl pyridine (2–VP), styrene (Sty), and butyl acrylate (BA), using a ceric ammonium nitrate–nitric acid initiator system, a…
오늘날 폐기물문제는 국내외적으로 중요한 국가과제로 자리매김하고 있다. 이와 같은 폐기물문제의 근원은 대량생산ㆍ대량소비ㆍ대량폐기형의 경제활동에 의해 질ㆍ양 양면에 걸쳐서 환경부하가 증대하고 있는 것에 있다고 할 수 있을 것이다. 따라서 「대량생산ㆍ대량소비ㆍ대량폐기형의 사회에서 순환형사회로의 전환」은 이제 피할 수 없는 시대적 요청이 되고 있다. 한편, 일본에서는 2000년 6월에 「순환형사회형성추진기본법」이 제정되어 순환형사회의 형성에 향한 움직임이 구체화하게 되었다. 특히 폐기물처리법과 관련하여서는 그동안의 문제점을 근거로 하여 2010년 5월 19일 개정된 법률이…
The previous monolithic active grating bender design met some basic design requirements. However, after a real grating (BM-AGM) had been fabricated and installed for testing, the results showed that the usable length is a mere 60 mm because of the higher-order term error in the surface profile. A method was thus deriv…
Beachrocks are coastal sedimentary formations mainly occurring along equatorial-tropical coasts that result from a relative rapid cementation of beach sediments by the precipitation of carbonate cements. A series of physico-chemical and biologically-induced processes have been invoked to explain such rapid cementation…
Cet article a pour objectif de rappeler et de fournir les fondamentaux théoriques et pratiques sur la compatibilité électromagnétique (CEM). Sont ainsi abordées les définitions et les descriptions des principales interactions électromagnétiques, depuis les interactions conduites, de champ proche, aux interactions rayo…
Vitamin E (alpha-tocopherol) is a free-radical stabilizing agent used to maintain oxidative stability in radiation crosslinked UHMWPE for total joint replacements. Diffusion of vitamin E into UHMWPE after irradiation is one method of incorporation, while an alternative is blending vitamin E with UHMWPE resin powder an…
Danica Agbaba, Andjelija Malenovic; New Methods for Drug Analysis in Biological Samples and Other Matrixes, Journal of AOAC INTERNATIONAL, Volume 94, Issue 3, 1
The electrochemical behavior of the LaSrCuO 4 − δ /Ce 0.9 Gd 0.1 O 2 − δ interface is studied by impedance spectroscopy and cyclic voltammetry methods. By analyzing the dependence of the impedance frequency spectra on the oxygen partial pressure, the rate-determining stages of oxygen exchange are determined in the tem…
We report a case, in which quantitative 1H-MR spectroscopy (MRS) was useful for the differentiation between radiation necrosis and a recurrent tumor. The present case is a 44-year-old man who underwent the subtotal removal of a mass lesion in the left frontal lobe. The histological diagnosis was anaplastic oligodendro…
Methylibium petroleiphilum PM1, which is capable of degrading methyl tert-butyl ether (MTBE) , was immobilized in calcium alginate gel beads. Several methods were explored to increase the strength of these gel beads. The central composite design analysis indicated that the introduction of 0.2 mol x L(-1) Ca2+ into the…
Plastic and Reconstructive Surgery: May 2011 - Volume 127 - Issue - p 46 doi: 10.1097/01.prs.0000396762.92346.dc
Axial pattern flaps are characterized by a single vascular pedicle that supplies the whole flap and carry the danger of flap loss. For this reason, monitoring and early identification of vascular perfusion is important for flap prognosis. The most commonly used method for flap monitoring is clinical assessment, but it…
The spinel cobalt ferrite (CoFe.sub.2./sub.O.sub.4./sub.) nanoparticles were prepared via a sol-gel method followed by the annealing process. Their structural, magnetic and magnetorheological (MR) properties depending upon the annealing temperature were investigated. The X-ray diffraction analysis revealed that the hi…
It is well known that the chemotherapy drug doxorubicin (DOX) is associated with a dose dependent cardiotoxicity, and thus the primary focus of DOX-induced side effects has been the heart. However, there is evidence that DOX also imparts a negative effect on skeletal muscle, but at this point, the nature of this DOX-i…
PURPOSE: This study validated the accuracy of Cosmed's Quark CPET metabolic and mixing chamber system (Rome, Italy) in measuring oxygen consumption and ventilation during graded exercise testing. METHODS: Subjects included 18 young adult men with a history of aerobic training between the ages of 18 and 33 years (mean±…
A kind of amorphous titanium oxide particles with different sizes (30nm, 80nm, 240nm and 640nm) was prepared using a hydrolysis method. The microstructure, dielectric properties and ER performance were investigated. The results show that the suspensions composed of smaller particles have higher yield stress at DC elec…