Research Infinity - All Articles

Physics Maths Engineering

Effective action of string theory at order α in the presence of boundary

Recently, using the assumption that the string theory effective action at the critical dimension is background independent, the classical on-shell effective action of the bosonic string theory at order α in a spacetime manifold without boundary has been reproduced, up to an overall parameter, by imposing the O(1, 1) symmetry when the background has a circle. In the presence of the boundary, we co...
Posted 3 years ago

Biomedical

Comparison between Bromine, Calcium, Chlorine, Iodine, Potassium, Magnesium, Manganese, and Sodium Contents in Normal Thyroid and Riedel’s Struma

Role of chemical elements (ChE) in etiology and pathogenesis of Riedel’s disease (RD) is unclear. The aim of this exploratory study was to assess whether there were significant changes in thyroid tissue levels of eight ChE (Br, Ca Cl, I, K, Mg, Mn, and Na) are present in the fibrotic transformed thyroid. Eight ChE of thyroid tissue were determined in 6 patients with RD. The control group inc...
Posted 3 years ago

Biomedical

Iraq Healthcare System During the First Year of Covid-19 Pandemic

Background: The year 2020 witnessed the rapid spread of covid-19 pandemic in Iraq and in almost all the countries in the world. This spread has created a serious health crises and a public health emergency in Iraq and throughout the world. Throughout the world, healthcare systems have been negatively influenced by the pandemic and experienced unexpected changes. We have previously provided sever...
Posted 3 years ago

Physics Maths Engineering

Synthesis and Characterization of Zincoxide Nanoparticles of Average Diameter 10nm in Aqueous Medium

Synthesis of Zincoxide nanoparticles (ZnO NPs) with definite size and shape and their morphological characterization rationally is really a challenging aspect at present due to the ongoing demand of these nanosize particles for their divergent use in different field of science and technology. Reduction of Zinc acetate dihydrate by sodium hydroxide was performed to produce ZnO NPs by follow...
Posted 3 years ago

Physics Maths Engineering

Gravitational Fields and Gravitational Waves

The relative velocity between objects with finite velocity affects the reaction between them. This effect is known as general Doppler effect. The Laser Interferometer Gravitational-Wave Observatory (LIGO) discovered gravitational waves and found their speed to be equal to the speed of light c. Gravitational waves are generated following a disturbance in the gravitational field; they affect the...
Posted 3 years ago

Physics Maths Engineering

The Microscopic Mechanisms Involved in Superexchange

:In earlier work, we previously established a formalism that allows to express the exchange energy J vs. fundamental molecular integrals without crystal field, for a fragment A–X–B, where A and B are 3d 1 ions and X is a closed-shell diamagnetic ligand. In this article, we recall this formalism and give a physical interpretation: we may rigorously predict the ferromagnetic (J < 0) or antif...
Posted 3 years ago

Physics Maths Engineering

Multi-Criteria Analysis in the Decision-Making Approach for the Linear Ordering of Urban Transport Based on TOPSIS Technique

The effects of urban transport are highly concerning. The rapid urbanization and motorization in smart cities have a huge impact on sustainability. The goal of the paper is to analyse the smart cities selected, in terms of the urban transport. This paper presents an overview of research works published between 1991 and 2020 concerning urban transport and MCDM (multi-criteria decision making). ...
Posted 3 years ago

Biomedical

Is manual drawing of region of interest to measure fractional anisotropy a reliable method of determining white matter integrity- Medial Temporal Lobe Epilepsy model

In patients with Medial Temporal Lobe Epilepsy (MTLE), more severe impairment in the ipsilateral than the contralateral hemisphere white matter tracts, including Superior Longitudinal Fasciculus (SLF), are demonstrated on diffusion tensor imaging (DTI). Many clinicians and researchers conclude that drawing regions of interest (ROI) in the white matter can demonstrate these asymmetries. In this ...
Posted 3 years ago

Biomedical

Free-run electromyography assisted interlaminar endoscopic lumbar disckectomy at L4L5 and L5S1 under general anesthesia

Introduction: Interlaminar Endoscopic Lumbar Disckectomy has been found to offer symptomatic alleviation comparable to open disckectomy while reducing blood loss, postoperative discomfort, complications, hospital stay, and narcotic use. General anesthesia decreases intraoperative stress, but surgeons may not be sure whether they injure nerve roots. Free-run electromyography may protect nerve ro...
Posted 3 years ago

Biomedical

Semantic Pattern Detection in COVID-19 Using Contextual Clustering and Intelligent Topic Modeling

The COVID-19 pandemic is the deadliest outbreak in our living memory. So, it is the need of hour to prepare the world with strategies to prevent and control the impact of the pandemic. In this paper, a novel semantic pattern detection approach in the COVID-19 literature using contextual clustering and intelligent topic modeling is presented. For contextual clustering, three level weights at ...
Posted 3 years ago