نتایج جستجو برای: سیلیکای مزومتخلخل sba

تعداد نتایج: 2768  

Journal: :Clinical and vaccine immunology : CVI 2007
Jamie Findlow Ann Holland Diana Martin Philipp Oster Paul Balmer Ray Borrow

The surrogate of protection against Neisseria meningitidis serogroup B (MenB) is the serum bactericidal antibody (SBA) assay, which measures the functional activity of antibody by using an exogenous complement source. Despite baby rabbit complement having been used in meningococcal serogroup A, C, Y, and W135 SBA assays, it is not recommended for use in the MenB SBA assay due to elevated SBA ti...

Journal: :Food chemistry 2017
Paula Corell Escuin Alfonso García-Bennett Jose Vicente Ros-Lis Angel Argüelles Foix Ana Andrés

The ability of a number of mesoporous silica materials (SBA-15, SBA-3, and MCM-48) to immobilize polyphenol oxidase (PPO) at different pH has been tested. Pore size and volume are the structural characteristics with higher influence on the PPO immobilization. Mesoropous material SBA-15 adsorbs a larger quantity of PPO at pH 4.00 and offers an inhibition of enzymatic activity close the 50% in ap...

Journal: :Chemical communications 2015
Tao Zhang Xiaoxi Huang Tewodros Asefa

A protonated polyaniline-functionalized SBA-15 mesoporous silica nanomaterial (H(+)-PANI/SBA-15) with high surface area and ideal surface properties for the adsorption of anionic dyes is synthesized. Compared with the conventional emeraldine salt of polyaniline (H(+)-PANI), H(+)-PANI/SBA-15 has a significantly higher adsorption capacity for the anionic dye Orange G and is a more effective sorbe...

Journal: :Cancer research 1986
W G Hammond J R Benfield R R Paladugu N Azumi H Y Pak R L Teplitz

Short bronchial segments obtained by pneumonectomy were implanted, 9-12 per dog, in the subcutaneous tissues of the back of seven dogs. These subcutaneous bronchial autografts (SBA) became vascularized, and they contained viable, histologically normal respiratory epithelium 4 wk after implantation. From 1-3 mo after implantation, 10% methylcholanthrene in steroid suspension medium was instilled...

2007
Sara Solla

We study Schapire's Boosting Algorithm(SBA) for use in practice. SBA is analyzed in terms of its representation and its search. We show that the SBA representation is a piecewise tiling of the domain and that if the weak learner has low coverage ability, SBA's search may fail to boost or may give a sub-optimal solution. We present a rejection boosting algorithm that trades-oo exploration and ex...

Journal: :Catalysts 2023

Mesoporous Cu(Fe)/SBA-15 catalysts were prepared with distinct metal loadings of ca. 2–10 wt.%. A detailed set characterizations using X-ray diffraction (XRD), electron paramagnetic resonance (EPR), transmission microscopy (TEM), scanning coupled to energy dispersive spectroscopy (SEM-EDS), Mössbauer spectroscopy, photoelectron (XPS) and Raman was performed correlate the relationship among stru...

ژورنال: آب و فاضلاب 2016

بسیاری از رنگ‌های آلی مانند رنگ کاتیونی متیلن‌بلو به‌دلیل ساختار پیچیده آروماتیک و حلالیت بالا در آب، سمی، سرطانزا و غیر قابل تجزیه‌ زیستی می‌باشند، لذا حذف آنها از پساب ضروری است. در این تحقیق، سیلیس نانوحفره SBA-15  به‌روش هیدروترمال سنتز و سپس به‌روش پساسنتزی با گروه تک‌شاخه آمینی (NH2-SBA-15) و دندریمرآمینی ‌(MDA-SBA-15) عامل‌دار شد. اثر اصلاح سطح بر روی کارایی جذب رنگ متیلن‌بلو در سیستم نا...

2017
Grainne Holleran Mary Hussey Sinead Smith Deirdre McNamara

AIM To assess the use of serum levels of angiopoietin-1 (Ang1), Ang2 and tumor necrosis factor-α (TNFα) as predictive factors for small bowel angiodysplasia (SBA). METHODS Serum samples were collected from patients undergoing capsule endoscopy for any cause of obscure gastrointestinal bleeding (OGIB) or anaemia. Based on small bowel findings patients were divided into 3 groups: (1) SBA; (2) o...

Journal: :Chemosphere 2010
Rabih Saad Sonia Thiboutot Guy Ampleman Wang Dashan Jalal Hawari

Trinitroglycerin (TNG) is an industrial chemical mostly known for its clinical use in treating angina and manufacturing dynamite. The wide manufacture and application of TNG has led to contamination of vast areas of soil and water. The present study describes degradation of TNG with zero-valent iron nanoparticles (ZVINs) in water either present alone or stabilized on nanostructured silica SBA-1...

Journal: :The Analyst 2011
Sen Liu Jingqi Tian Lei Wang Yonglan Luo Guohui Chang Xuping Sun

In this communication, we demonstrate our recent finding that iron-substituted SBA-15 (Fe-SBA-15) microparticles possess intrinsic peroxidase-like activity and can catalyze the oxidation of peroxidase substrate 3,3',5,5'-tetramethylbenzidine (TMB) by H(2)O(2) to develop a blue color in aqueous solution, leading to a simple approach towards colorimetric detection of H(2)O(2) with a linear detect...

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