نتایج جستجو برای: silicate

تعداد نتایج: 10667  

2014
Chiharu Tokoro Shinya Suzuki Daisuke Haraguchi Sayaka Izawa

The removal mechanisms of silicate using an aluminum hydroxide co-precipitation process was investigated and compared with an adsorption process, in order to establish an effective and validated method for silicate removal from wastewater. Adsorption isotherms, XRD and FT-IR analyses showed that silicate uptake occurred by adsorption to boehmite for initial Si/Al molar ratios smaller than two, ...

Ali Mohammad Hajishabani, Jahanbakhsh Ghasemi Masoud Rohani Moghadam Shayesteh Dadfarnia

Partial least squares modeling as a powerful multivariate statistical tool was applied tothe simultaneous spectrophotometric determination of silicate and phosphate in aqueoussolutions. The concentration range for silicate and phosphate were 0.02-0.6 and 0.4-3 μg ml-1,respectively. The experimental calibration set was composed with 30 sample solutions using amixture design for two component mix...

Journal: :Advanced materials 2016
Jinyoung Kang Jinmyoung Joo Ester J Kwon Matthew Skalak Sazid Hussain Zhi-Gang She Erkki Ruoslahti Sangeeta N Bhatia Michael J Sailor

Calcium ions react with silicic acid released from dissolving porous silicon nanoparticles to create an insoluble calcium silicate shell. The calcium silicate shell traps and protects an siRNA payload, which can be delivered to neuronal tissues in vitro or in vivo. Gene delivery is enhanced by the action of targeting and cell-penetrating peptides attached to the calcium silicate shell.

Journal: :The Journal of Experimental Medicine 1956
Colin M. MacLeod Amy S. Roe

Application of silicate solutions to living or heat-killed pneumococci and to certain "viridans" streptococci causes their conversion from a Gram-positive to a Gram-negative state. The original staining properties can be restored by suspending the silicate-treated bacteria in alkaline solutions of various salts but not by simple washing in water. Living pneumococci and the strains of streptococ...

2004
T. Takagi C. P. Pearson

We present a photometric selection method for ULIRGs in the redshift range of z = 1 – 2. We utilize the most prominent spectral feature of ULIRGs, i.e. the silicate absorption feature at 9.7 μm and an optimized filter system at mid-infrared wavelengths. These ‘silicate-break’ galaxies could be selected by using colour anomalies owing to the silicate absorption feature around 9.7(1+z) μm. Such f...

Journal: :فصلنامه علمی اکوفیزیولوژی گیاهان زراعی 0
آتنا نجفی تیرتاشی دانشجوی کارشناسی ارشد زراعت دانشگاه آزاد اسلامی واحد آیت الله آملی مهران محمودی استادیار گروه زراعت دانشگاه آزاد اسلامی واحد آیت الله آملی،آمل،ایران

in order to determine the effect of potassium silicate solution with elements of macro and micro elements on agronomic traits of rice, tarom, a field experiment in paddy fields galogah city - village marbles of the crop year 2014 was conducted. the results showed that the highest plant height (013/180 cm) to 2 liters per hectare and no interaction effects of potassium silicate elements. the res...

Journal: :Macromolecular bioscience 2012
Akhilesh K Gaharwar Vipuil Kishore Christian Rivera Whitney Bullock Chia-Jung Wu Ozan Akkus Gudrun Schmidt

The mechanical and biological properties of silicate-crosslinked PEO nanocomposites are studied. A strong correlation is observed between silicate concentration and mechanical properties. In vitro cell culture studies reveal that an increase in silicate concentration enhances the attachment and proliferation of human mesenchymal stem cells significantly. An upregulation in the expression of ost...

2013
Ueder Pedro Lopes Laércio Zambolim Pedro Nery Souza Neto Antônio Fernando Souza Alexandre Sandri Capucho Fabricio de Ávila Rodrigues

In order to evaluate the effect of potassium silicate spray on the control of coffee leaf rust and coffee yield, an experiment was conducted during the 2005/2006 and 2006/2007 growing seasons on Coffea arabica cv. Catuaí Vermelho IAC 144, in a location situated at an elevation of 850 m in Coimbra, Minas Gerais, Brazil. The treatments consisted of: 1 potassium silicate; 2 potassium silicate + co...

2017
Farnaz Jafari Sanaz Jafari

Background Recently a new generation of endodontic sealers has been developed based on calcium silicate as MTA Fillapex, Endoseal MTA, Total Fill BC Sealer, EndoSequence BC Sealer, iRoot SP, Endo CPM sealer, MTA-Angelus and ProRoot Endo Sealer. A review of literature was conducted to discuss the composition, physicochemical properties, and clinical perspectives of calcium silicate based sealers...

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