نتایج جستجو برای: eaf and bof slag
تعداد نتایج: 16829659 فیلتر نتایج به سال:
Phenolic rich ethyl acetate fraction (EAF) from lotus leaves was prepared and its bioactive components, antioxidant and cytoprotective effects were investigated. EAF showed high total phenolic content and flavonoid content and contained rutin (11,331.3±4.5 mg/100 g EAF), catechin (10,853.8±5.8 mg/100 g EAF), sinapic acid (1,961.3±5.6 mg/100 g EAF), chlorogenic acid (631.9±2.3 mg/100 g EAF), syr...
The application of electric arc furnace ladle slag (EAF slag) in cement products might be limited due to the volume expansion and instability created by late hydration. Proper control technique should developed before reuse (LS). With addition aluminum powder alkali-activated pastes, porous materials were produced. By adjusting activator modulus between 1.25 2.00, fine pores produced foamed mat...
The pulverized lime/limestone injection by top oxygen blowing lance during the basic furnace (BOF) process has gained much interest in recent years due to its advantages helping slag formation and consequently promoting refining reactions such as dephosphorization. In this pneumatic process, understanding motion behavior distribution of powder particles is importance for regulating designing sy...
The pneumatic lime injection during the electric arc furnace (EAF) process by insufflation lances mounted on walls has gained much interest in latest years. main advantages, comparison to traditional procedure of lumps addition within scrap bucket, can be summarized raw materials consumption reduction, foaming benefits, operational cost and improvement environmental aspects. In proposed work, a...
The 1-kb BamHI-SalI fragment from plasmid pMAR2 termed the enteropathogenic Escherichia coli (EPEC) adherence factor (EAF) probe was cloned in pUC19 and pK18. The nucleotide sequence of this fragment was determined, and a set of primers was designed to amplify a 397-bp region associated with pMAR2 by PCR. An analysis of the whole EAF sequence with database libraries indicated no significant hom...
Steel slag (SS) is a secondary material from steelmaking production with little commercial value. Its volumetric expansion and low reactivity limit the use of SS in Portland cement (PC)-based materials. This study investigated potential basic oxygen furnace (BOF) as single precursor alkali-activated matrices (AAMs). Six AAM pastes were assessed by changing silica modulus (0.75, 1.50 2.22) sodiu...
BACKGROUND Viola canescens Wall. ex. Roxb. exhibits analgesic, antimalarial and antispasmodic activities. It is used folklorically for the treatment of liver diseases, hypertension, malaria and cancer. The current study investigates phytochemical constituents, antioxidant and hepatoprotective activity of solvent extracts of whole plant of Viola canescens. METHODS Phytochemicals, acute toxicit...
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