Vaulted structure has been in use for nearly 4000 years and believed to have been studied by scientists and builders for nearly 2000 years. There are few publications about the geometry and constructional aspects of arches and vaults before Renaissance age. One of the most interesting works on this subject belongs to Jamshid Kashani known as a mathematician. Ghiayth Al-Din Kashani, has made so...

Stereoelectronic effects is a bridge between structure and reactivity [1]. Anomeric effect plays an important role in the domain of stereoelectronic interaction and can be used for description of several unusual phenomena. Intramolecular negative hyperconjugation is also known as anomeric effect [2]. In anomeric effect, both donor (lone pairs) and acceptor groups (electronegative elements) coex...

  One of the dimensions of human life is its socio-political aspect. In this regard an important issue is the view of Islam towards the formation of government at the age of occultation. Referring to certain traditions, some believe that any kind of uprising and revolution prior to the emergence of Hazrat Qaem (Aj.) will be unlawful and add, “Any flag which is raised prior to the emergenc...

An uncontrolled immune system threatens human health as much as a defective one. Autoimmune diseases, such as type 1 diabetes (T1D), result from destruction of healthy tissues by a rogue immune system. Much of the selfpolicing of the immune system can be attributed to one subset of T cells called regulatory T cells (Tregs) (1). Patients with congenital defects in Tregs develop fatal multiorgan ...

Szkic prezentuje najciekawsze/najgłośniejsze polskie książki prozatorskie i poetyckie opublikowane w 2020 roku celu swoistego podsumowania tego, co działo się na polskim rynku wydawniczym minionym roku. Autorka próbuje odpowiedzieć pytanie, czy pandemia koronawirusa jakiś sposób wpłynęła pisarki/pisarzy, poetów/poetki wydawców. Jej celem jest sprawdzenie, jakiego typu literaturę piękną najchętn...

Two methods for determining dexterity of manipulator arms are presented. A numerical method is illustrated for determining all possible orientations of the end-effector of an open kinematic chain based upon a row-rank deficiency of the sub-Jacobian of the kinematic constraint equations. This numerical method has been adapted from a theory for determining the accessible output set for planar and...

One of the decisive factors in obtaining the desired properties in coatings is their complete curing, which necessitates the study of kinetics of curing. In recent years, many studies have been conducted on the use of polyhedral oligomeric silsesquioxane (POSS) in coatings. Creating functional groups on POSS and using it in formulation can create new or improve the properties of coatings. I...

i This issue of the International Journal of Web Services research (JWSR) is a collection of five papers on various topics of Web services. Nikola Milanovic and Miroslaw Malek formally define Web services-based architecture by adopting abstract machines with composition operators. Automatic service composition is mod-eled as a search problem. Basic heuristic, proba-bilistic, learning-based, dec...

Introduction: Pyoderma gangrenosum (PG) is a rare neutrophilic dermatosis characterized by painful cutaneous ulcers. It can appear as primary or idiopathic illness or secondary to a systemic disease. Only few cases in the literature reported the association between PG and Sjögren disease, which manifests primarily with sicca symptoms. This paper describes the remarkable initial clinical present...

Coburn, J.W., D.J. Housh, T.J. Housh, M.H. Malek, T.W. Beck, J.T. Cramer, G.O. Johnson, and P.E. Donlin. Effects of leucine and whey protein supplementation during eight weeks of unilateral resistance training. J. Strength Cond. Res. 20(2): 284–291. 2006.—The purpose of this study was to determine the effects of resistance training in combination with a leucine and whey protein supplement or a ...