The antioxidant activity of the extract was evaluated by DPPH and ABTS assays. Total flavonoid content reached 432.80 mg kg−1. The total phenolic content varied from 3.46 to 4.30 g kg−1 at the first stage of maturation and from 8.71 to 11.52 g kg−1 of fruit fresh weight at the last maturation phase. In all samples, hydroxytyrosol and oleuropein were the major compounds identified while rutin and luteolin 7-O-glucoside were the two main flavonoids. Twenty-six biophenolic compounds were identified. Qualitative and quantitative analysis of phenolic compounds were carried out using HPLC and LC-MS/MS. For more info: īACKGROUND: The aim of this work was to investigate the effect of the maturation process of the olive fruit on oil content, phenolic profile and antioxidant activity of four Tunisian cultivars (Zelmati, Chemchali, Chemlali and Chétoui).RESULTS: The average oil content of the studied varieties ranged between 17.50% and 20.25% at the first stage of maturation and from 30.20% to 35% in the last harvest. For interested readers, more than 1300 references and numerous web links are provided in the chapters for further study and research. The book also provides appendices on strut-and-tie-method, properties of soils, design aids, and practical tips and thumb rules that add value to the rich content of book. Besides, discussion on the behaviour of various structural elements such as compression and tension members, beams, slabs, foundations, walls, and joints and design and detailing for flexure, shear, torsion, bond, tension, compression, uniaxial and biaxial bending and interaction of these forces make it an invaluable guide for students and designers. The text is based on the modern limit states design and covers topics such as the properties of concrete, structural forms, and loadings. In addition, discussion on earthquake-resistant design and detailing is provided, as about 60 per cent of India falls under moderate to severe earthquake zones. As some of the Indian code provisions are outdated, the American code (ACI 318:2011) provisions are used wherever necessary. This book provides an extensive coverage of the design of reinforced concrete structures in accordance with the current Indian codes of practice (IS 456:2000 and IS 13920:1993). This book will also be an invaluable reference to postgraduate students and practising engineers and researchers. Design of Reinforced Concrete Structures is designed to meet the requirements of undergraduate students of civil and structural engineering. This is the first Chapter of the Book released by Oxford University Press, New Delhi, recently. Investigated applicability of current models recommended by AASHTO LRFD Specifications and suggested revisions whenever applicable.Prepared guidelines for testing, proportioning, and casting SCC bridge elements and.Compared performance of precast, prestressed concrete elements made with SCC with those made with conventional high-performance concrete.Determined the influence of mix parameters, such as raw materials, mixture proportioning, mixing, production, placement, and characteristics of the cast element.Developed specifications and criteria for SCC mixtures for precast, prestressed concrete bridge elements.Identified test methods for use for quality control in precasting plants.Identified test methods for use in SCC mix design.Developed SCC mixtures that can be produced consistently in the field. Propose relevant changes to AASHTO LRFD Specifications.Evaluate key engineering properties, durability characteristics, and structural performance of such concrete and.Develop material properties and performance criteria for SCC used for precast, prestressed concrete bridge elements.To accomplish this objective, the research included work to: Such guidelines will provide highway agencies with the information necessary for considering SCC mixtures that are expected to produce a uniform product, expedite construction, and yield economic and other benefits. The objective of this research was to develop guidelines for use of SCC in precast, prestressed bridge elements, including recommended changes to the AASHTO Load and Resistance Factor Design (LRFD) Bridge Design Specifications and LRFD Bridge Construction Specifications, hereafter referred to as the AASHTO LRFD Specifications.
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