Solving Continuous and Weakly Singular Linear Volterra Integral Equations of the second kind by Laplace Transform Method

This work provides solutions to some continuous and weakly singular linear Volterra integral equations of the second kind by Laplace transform method. With the basic definition of convolution integral of two functions and Volterra fundamental theorems, the Laplace transform method gives an efficient and remarkable performance. Test problems are presented to show the efficiency and reliability of the method. Keywords: Volterra Integral equations, continuous and weakly singular Kernels , Laplace metho

Factors affecting BIM implementation: evidence from countries with different income levels

Purpose: This study aims to empirically analyze the symmetries and asymmetries among the critical factors affecting building information modeling (BIM) implementation between countries with different income levels. To achieve that aim, the study objectives are to identify: critical factors affecting BIM implementation in low-, lower-middle-, upper-middle- and high-income countries; overlapping critical factors between countries with different income levels; and agreements on the critical factors between countries with different income levels

Wild vegetable Rumex acetosa Linn.: Its ethnobotany, pharmacology and phytochemistry – A review

Rumex acetosa Linn belongs to Polygonaceae, the species is distributed worldwide (African, Asian, American and European countries). Rumex acetosa is used traditionally as vegetables and for its medicinal uses. Its diverse uses in traditional and cultural applications, have geared much research towards its phytochemical and pharmacological activities. This review intends to offer and give up-to-date knowledge cum research on its ethnopharmacology, chemical constituents, pharmacological activities, reactions with other drugs, and safety concerns, so that the medicinal uses and new research trends can be recognized. Methodology The literature related to the title i.e. R. acetosa Linn was effected by a search using the keywords like “Rumex acetosa, sorrel, garden sorrel and biological activity of R. acetosa” in “Google Scholar,” “PubMed,” “ScienceDirect” “Scopus” and “Web of Science” databases. Plant taxonomy was queried by the databases “The Plant List,” and Many publications' sites were queried like Springer, Elsevier, and dissertation search engines like Open-thesis, OATD, ProQuest and EthOs were put to use. Results This study argues the huge advantages that this plant species possesses and further highlights the up-to-date knowledge of chemistry, the invitro and invivo biological studies, phytochemistry and scientific basis for the use of the plant R. acetosa. Many cultures around the world uses the leaves and aerial parts as vegetables, other parts of this medicinal plant are employed in the management of a number of ailments such as constipation, diarrhea, jaundice, mild diabetes and as an analgesic, antihypertensive, against gallbladder, liver and skin disorders and inflammation. The phytochemistry of this wild vegetable showed that over 60 compounds were reportedly isolated, these includes anthraquinones, naphthalene, polyphenols and other compounds. Furthermore, this manuscript depicts the high level of oxalic acid in R. acetosa though cooking reduces oxalic acid concentration to negligible amount