Among the agents of deterioration considered particularly damaging to cultural heritage objects are light, ultraviolet (UV) and infrared. The high-energy UV is most three, as it can cause irreversible visual, chemical structural changes in cellulose-based materials. Known for its photocatalytic properties, TiO2 absorb thermally chemically stable. In this study, we propose an innovative bilayer ...

BACKGROUND Studies on the inter-relations between people and animals have been considered essential to better understand the dynamics of socio-ecological systems. This study aimed to register the animal species known by the communities adjacent to National Forest of Araripe, their uses and if the close relationship affects the knowledge of useful species. METHODS Data collection was conducted...

Potato lectin (Solanum tuberosum agglutinin, STA), purified by affinity chromatography on tri-N-acetylchitotriose-Sepharose 6B, has Mr approximately 100,000, as estimated by gel filtration on Sephadex G-150 and is an aggregating system with a monomer Mr = 54,000, as estimated by sedimentation equilibrium analysis. Equilibrium dialysis showed that STA (dimer) has two binding sites for a specific...

zno thin films with preferred orientation along the (002) plane were prepared onto the glass substrates by the sol-gel spin coating method for different post- annealing temperatures. the xrd study confirms that the thin films grown by this method have good crystalline hexagonal wurtzite structure. the optical band gap of the samples was determined from uv-visible spectra. it is found that the s...

The p53 tumor suppressor gene contains a common single nucleotide polymorphism (SNP) that results in either an arginine or proline at position 72 of the p53 protein. This polymorphism affects the apoptotic activity of p53 but the mechanistic basis and physiologic relevance of this phenotypic difference remain unclear. Here, we describe the development of mouse models for the p53 R72P SNP using ...

Recent trends in stratospheric ozone depletion and projected increases in solar UV-B radiation (280-320 nm) have intensified studies of the ecological and physiological effects of increased levels of UV-B on higher plants (Caldwell, 1981; Worrest and Caldwell, 1986). Soybean (Glycine max L. Merr) is among the most extensively studied plants because it is a key crop of worldwide importance and b...

世界各地で水不足と水質汚染の問題が深刻となっており，衛生的な水の確保は重要な課題である．水の消毒では，遊離塩素と結合塩素の濃度を適切に管理することが重要である．遊離塩素と結合塩素の間には光分解反応速度に差が生じるため，この性質を利用することで遊離塩素と結合塩素の分別が可能であると考えた．本研究では，光照射流路と光照射のない流路への分岐を備えたフローインジェクション分析（FIA）システムを構築し，それぞれの流路を経由して得られるシグナルを時間差で検出した．その結果，それぞれのシグナルの大きさと遊離塩素及び結合塩素濃度の関係から作成した線型方程式を用いることで，一度の試料注入での同時定量が可能となった．次亜塩素酸イオンとクロラミンTの混合溶液を用いて同時定量を試みたところ，仕込み量と同等の値を得ることができた．