نتایج جستجو برای: nano calcium

تعداد نتایج: 217081  

Journal: :Dalton transactions 2016
U Nithiyanantham Ananthakumar Ramadoss Subrata Kundu

Self-assembled, aggregated, chain-like SnO2 nano-assemblies were synthesized at room temperature by a simple wet chemical route within an hour in the presence of DNA as a scaffold. The average size of the SnO2 particles and the chain diameter were controlled by tuning the DNA to Sn(ii) molar ratio and altering the other reaction parameters. A formation and growth mechanism of the SnO2 NPs on DN...

Journal: :Journal of the Royal Society, Interface 2012
Mohammad Mahdi Najafpour Fahimeh Rahimi Eva-Mari Aro Choon-Hwan Lee Suleyman I Allakhverdiev

There has been a tremendous surge in research on the synthesis of various metal compounds aimed at simulating the water-oxidizing complex (WOC) of photosystem II (PSII). This is crucial because the water oxidation half reaction is overwhelmingly rate-limiting and needs high over-voltage (approx. 1 V), which results in low conversion efficiencies when working at current densities required for hy...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد - دانشکده علوم پایه 1393

روش های معمول برای تهیه بنزوتیازول ها شامل تراکم 2-آمینوتیوفنول با کربوکسیلیک اسید ها، آلدهید ها و هم¬چنین ارتواسترها می باشد. در این کار، کاتالیست nano- γ-al2o3/bf3-n به عنوان کاتالیست اسید جامد تهیه شده است. برای تایید ساختار nano- γ-al2o3 و nano- γ-al2o3/bf3-n طیف مادون قرمز و پراش پرتو xگرفته شده است. مشتقهای بنزوتیازول از طریق تراکم آلدهید ها با 2-آمینوتیوفنول با استفاده از nano- γ-al2o...

Journal: :Scientific reports 2016
Kishor Pandey Pedro E Ferreira Takeshi Ishikawa Takeharu Nagai Osamu Kaneko Kazuhide Yahata

Calcium (Ca(2+))-mediated signaling is a conserved mechanism in eukaryotes, including the human malaria parasite, Plasmodium falciparum. Due to its small size (<10 μm) measurement of intracellular Ca(2+) in Plasmodium is technically challenging, and thus Ca(2+) regulation in this human pathogen is not well understood. Here we analyze Ca(2+) homeostasis via a new approach using transgenic P. fal...

2016
Jianhong Zhou Lingzhou Zhao

Advanced multifunction titanium (Ti) based bone implant with antibacterial, angiogenic and osteogenic activities is stringently needed in clinic, which may be accomplished via incorporation of proper inorganic bioactive elements. In this work, microporous TiO2/calcium-phosphate coating on Ti doped with strontium, cobalt and fluorine (SCF-TiCP) was developed, which had a hierarchical micro/nano-...

2006
Ganesan Balasundaram Thomas J. Webster

In the present study, functionalized bioresorbable nanomaterials (less than 50 nm in size) were formulated to specifically attach to cancerous (not healthy) bone to form an implant used to treat bone cancer. After attachment, sustained release of anti-cancer agents occurred at targeted sites. Specifically, inorganic biodegradable nanomaterials (including ceramics like hydroxyapatite or HA) were...

2012
Sanaz Abdolmohammadi Samira Siyamak Nor Azowa Ibrahim Wan Md Zin Wan Yunus Mohamad Zaki Ab Rahman Susan Azizi Asma Fatehi

This study investigates the effects of calcium carbonate (CaCO(3)) nanoparticles on the mechanical and thermal properties and surface morphology of polycaprolactone (PCL)/chitosan nanocomposites. The nanocomposites of PCL/chitosan/CaCO(3) were prepared using a melt blending technique. Transmission electron microscopy (TEM) results indicate the average size of nanoparticles to be approximately 6...

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