نتایج جستجو برای: sonochemical decomposition

تعداد نتایج: 100128  

ژورنال: طلوع بهداشت یزد 2016
دهقانی, محمد هادی, محوی, امیر حسین, نوروزی, زهیر, نیک فر, الهام,

Introduction:BPA is a non biodegradable antioxidant that has greatly hazardous for human and animals health. and Because of the eliminating alone fewness amount of the BPA during the wastewater treatment, wastewater that contains BPA can be source of pollution in aqueous solution. The objective of this study was Performance of ultrasonic and H2O2 technologies in removal of BPA from aqueous solu...

Journal: :The Journal of the Acoustical Society of America 1991

Journal: :Digital discovery 2023

A sonochemical Materials Acceleration Platform was implemented to synthesize CdSe nanocrystals under 625 unique conditions (in triplicate) in less than 6 weeks. The modularity of the workflow is adaptable a variety applications.

Journal: :Dalton transactions 2015
Matthieu Virot Laurent Venault Philippe Moisy Sergey I Nikitenko

The behavior of Pu(iv) and Pu(iii) was investigated in aqueous nitric solutions under ultrasound irradiation (Ar, 20 kHz). In the absence of anti-nitrous reagents, ultrasound has no effect on Pu(iv), while Pu(iii) can be rapidly oxidized to Pu(iv) due to the autocatalytic formation of HNO(2) induced by HNO(3) sonolysis. In the presence of anti-nitrous reagents (sulfamic acid or hydrazinium nitr...

2014
S. Chitra

Advanced Oxidation Processes (AOP) using ozone, H2O2, ultrasound (US), ultraviolet radiation (UV), Fenton’s reagent (FeII+H2O2) alone or in combination involving hydroxyl radicals are considered as possible methods of clean and ecologically safe remedial treatment for the degradation of organics. In the present study, comparison of kinetics of photochemical, sonochemical and chemical oxidation ...

2015
R. A. Torres-Palma E. Serna-Galvis J. Silva-Agredo A. Giraldo-Aguirre O. Florez

Elimination of antibiotic activity of waters contaminated with oxacillin by photo-Fenton, TiO2-photocatalysis, sonochemical and electrochemical processes A comparative study on the effects of additives R.A. Torres-Palma, E. Serna-Galvis, J. Silva-Agredo , A. Giraldo-Aguirre . O. Florez 2 (1) Grupo de Investigación en Remediación Ambiental y Biocatálisis [email protected]. (2) Grupo de ...

Journal: :Ultrasonics sonochemistry 2011
Zhengyan Fu Huawu Shao

A solvent-free procedure for the synthesis of 3-substituted indole derivates from indoles and nitroalkenes under ultrasound irradiation is described. Control experiments disclosed besides mechanical effects, namely agitation, sonochemical effects are the main forces to drive the reaction. In the method, 2-chloroethanol was used to prepare a wide variety of 3-substituted indole derivates. This p...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1391

هدف از این پایان نامه، مروری بر مقاله ی dominant singular value decomposition representation for face recognition نوشته ی و مراجع آن می باشد. در واقع کاربرد روش تجزیه ی svd(singular value decomposition) در تشخیص چهره را بیان می نماییم. تشخیص چهره شامل مراحل مختلفی می باشد: 1) بازنمایی تصویر2) کاهش بعد بردار ویژگی های مربوط به تصویر معرفی شده 3) کلاس بندی و تشخیص. هدف از این پایان نامه بررسی ...

Journal: :Spectrochimica Acta Part B: Atomic Spectroscopy 2022

Herein, an ultrasound-assisted dispersive magnetic micro-solid phase extraction (DM-?SPE) approach, along with electrothermal atomic absorption spectrometry (ETAAS) for the determination of lead at trace level in spring, well, river mineral and tap water samples was developed. The step is based on synthesis PbS, following sonochemical decomposition L-cysteine used as sulphide precursor its anch...

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