نتایج جستجو برای: eaf

تعداد نتایج: 627  

Ahmad Ghorbani Elham Asadpour Hamid Reza Sadeghnia Hassan Rakhshandeh

Objective: This study was planned to investigate whetherCoriandrum sativum (C. sativum) is capable of protecting neurons against glucose/serum deprivation (GSD)-induced cytotoxicity. Material and Methods: The PC12 cells were cultivated for 24 h in standard media (high-glucose DMEM containing Fetal Bovine Serum) or for 6 h in GSD condition (glucose-free DMEM, without serum) in the absence or pr...

2011
Remus Ion IACOBESCU Dimitra KOUMPOURI Yiannis PONTIKES Rami ŞABAN George ANGELOPOULOS Remus Iacobescu Dimitra Koumpouri Yiannis Pontikes Rami Şaban George Angelopoulos

În acest studiu, zgură de cuptor cu arc electric (EAFS) colectată de la Sovel S.A., Grecia şi calcar şi argilă, de la compania de ciment Titan S.A., Grecia, au fost utilizate pentru producerea şi caracterizarea cimenturilor tip belitice. Trei tipuri de clincher au fost preparate: belitic fara adaos de zgură folosit ca referinţă (BC), unul cu 5wt% EAFS (BC5) şi un altul cu 10wt% EAFS (BC10). Ana...

Journal: :Chemosphere 2007
E Aranda I García-Romera J A Ocampo V Carbone A Mari A Malorni F Sannino A De Martino R Capasso

Dry olive mill residue (DOR) from the olive oil production by two phase centrifugation system was fractionated by a consecutive continuous solid-liquid extraction obtaining the EAF, PF, MF and WF fractions with ethyl acetate, n-propanol, methanol and water, respectively. The chemical, chromatographic and mass spectrometric analyses showed EAF, PF and MF to be mainly composed of simple phenols, ...

Journal: :Metals 2021

Steelmaking in the electric arc furnace (EAF), either scrap-based or based on hydrogen direct reduced iron, will future contribute substantially to reduction of CO2 emissions iron and steel industry. However, there still be need introduce carbon into EAF process carburize create foaming slag improve energy efficiency melting process. So, reach emission goals set around world, it necessary subst...

Journal: : 2021

Low energy efficiency of foundry class electric arc steelmaking furnaces (EAF) mainly is caused by heat loss massive lining during forced downtime. A low-power transformer doesn’t allow, in the conditions classical technology, practice traditional water-cooled elements order to replace partially lining, what determines increased refractory consumption. The aim and savings. On basis numerical mo...

Journal: :Medical sains : jurnal ilmiah kefarmasian 2023

Peperomia pellucida (Chinese betel) is considered as a plant with antioxidant activity for inhibiting oxidation reactions. This study aims to determine the yield of secondary metabolites, total flavonoid levels, and activity. Dried leaves Chinese betel were macerated using 70% ethanol solvent. The extract was partitioned until n-hexane ethyl acetate fractions obtained. A phytochemical screening...

2017
Rhayanne T. M. Ramos Isabelle C. F. Bezerra Magda R. A. Ferreira Luiz Alberto Lira Soares

BACKGROUND The traditional use of Eugenia uniflora L. ("Pitanga") is reported due to several properties, which have often been related to its flavonoid content. OBJECTIVE The aim was to evaluate analytical procedures for quantification of total flavonoids content (TFCs) by ultraviolet-visible (UV-Vis) spectrophotometry in the herbal material (HM), crude extract (CE), and fractions from leaves...

2014
Rafaele CP Araujo Francisco AR Neves Anelise SN Formagio Candida AL Kassuya Maria EA Stefanello Vanessa V Souza Fernando R Pavan Julio Croda

BACKGROUND The recent emergence of extensively multidrug-resistant Mycobacterium tuberculosis strains has further complicated the control of tuberculosis. There is an urgent need for the development of new molecular candidates antitubercular drugs. Medicinal plants have been an excellent source of leads for the development of drugs. The aim of this study was to evaluate the in vitro activity of...

Journal: :Ortopediia travmatologiia i protezirovanie 2022

Recently, there has been a trend towards high statistical indicators of the number bone fractures lower limbs(47.3%), which diaphyseal leg bones make up 45‒56 %. Objective. Conduct comparative analysisof stress-strain state models with fracture tibia under torsional loading combined various optionsof osteosynthesis and depending on patient's weight. Methods. A was modeled in middle third diaphy...

Journal: :IEEE Transactions on Industry Applications 2022

In this research work, deep machine learning-based methods together with a novel data augmentation are developed for predicting flicker, voltage dip, harmonics, and interharmonics originating from highly time-varying electric arc furnace (EAF) currents voltage. The aim the prediction is to counteract both response reaction time delays of active power filters (APFs) specifically designed furnace...

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