This paper is the first of a two part series. In this paper, we first prove that the variety of dually quasi-De Morgan Stone semi-Heyting algebras of level 1 satisfies the strongly blended ∨-De Morgan law introduced in [20]. Then, using this result and the results of [20], we prove our main result which gives an explicit description of simple algebras(=subdirectly irreducibles) in the variety o...

BACKGROUND: Milligan-Morgan excision haemorrhoidectomy remains a very popular treatment modality for third and fourth degree hemorrhoids due to its cost effectiveness and better long-term results. Ferguson haemorrhoidectomy is believed to result in less postoperative pain because of a closed wound. The aim of this study was to compare the effectiveness of Milligan-Morgan excision haemorrhoidect...

MOTIVATION Molecular representation for small molecules has been routinely used in QSAR/SAR, virtual screening, database search, ranking, drug ADME/T prediction and other drug discovery processes. To facilitate extensive studies of drug molecules, we developed a freely available, open-source python package called chemoinformatics in python (ChemoPy) for calculating the commonly used structural ...

Abstract Every application of soil erosion models brings the need proper parameterisation, that is, finding physically or conceptually plausible parameter values allow a model to reproduce measured values. No universal approach for calibration and validation exists, as it depends on model, spatial temporal resolution nature datasets used. We explored some existing options modelling exemplary wi...

the main purpose of this descriptive-survey study was to investigate the problems of applying cell phone in delivering agricultural consultancy, technical and engineering services. the statistical population of the study consisted of 218 experts working in agricultural consulting, technical and engineering service ventures in zanjan province. according to the kjercie and morgan table, a sample ...

Efforts to mitigate the effects of climate change have led research and industry groups to explore ways of applying existing technologies and practices to the challenge of reducing CO2 emissions. The storage of CO2 in underground geologic reservoirs is one such idea that employs techniques developed for oil and gas production and transmission. For example, CO2 has been injected into petroleum r...

In the paper, the notion of a contact relation on de Morgan algebra is defined, the algebraic structure of all contact relations and the connection to the set of all close, reflexive and symmetric relations on all maximal filters are investigated. 2010 AMS Classification: 06D30, 06F30, 54E05, 54H12

AT the urging of Professor G. M. McKinley, who sophila genetics had become too complex for him. Mortaught genetics at the University of Pittsburgh, I gan was a discoverer, not a bookkeeper, and after the applied for graduate school at Caltech, was accepted, basic findings of Drosophila genetics had been made, he and arrived in Pasadena for the opening of the fall term left the subject in the co...