Scientific Research and Reviews


Useful concepts in magnetism, for supraconductivity and depleted uranium cleaning

Review Article of Scientific Research and Reviews Useful concepts in magnetism, for supraconductivity and depleted uranium cleaning Florent Pirot Independent researcher This short note is of interest for depleted uranium cleaning and supraconductivity studies. It presents ways to cleanse depleted uranium efficiently. Keywords: Magnetism; Uranium cleaning; Supraconductivity studies ...

Integrative Analysis of Transcriptome and Methylation Data in Human Non-Small Cell Lung Cancer

Research Article of Scientific Research and Reviews Integrative Analysis of Transcriptome and Methylation Data in Human Non-Small Cell Lung Cancer Xiang AO Department of Computer Science, City University of Hong Kong, Hong Kong. Human lung cancer is the most prevalent cancer worldwide that consisting of two main subtypes: the non-small cell lung cancer (NSCLC) and the small cell lung cancer (SCLC). NSCLC comprises over 80% of lung cancer and the treatment of NSCLC is mostly guided by tumor stage, although distinctive molecular characteristics between two major subtypes of NSCLC, i.e., lung adenocarcinoma (LUAD) and squamous cell lung carcinoma (LUSC), have been increasingly identified. In this study, we integrated the gene expression data and methylation data to investigate the genetic differences between LUAD and LUSC. We further applied the Boruta package to select key features from LUAD and LUSC tumor samples to build predictive models of tumor stage. We finally obtained 6 key gene expression features and 4 key methylation features that can be reliably used in prediction of LUAD and LUSC stage. Keywords: Transcriptome; Methylation Data; Lung Cancer ...

Innovative testing technique of rock stress wave propagation

Research Article of Scientific Research and Reviews Innovative testing technique of rock stress wave propagation Qing-yu Song1*,  Rui Zhang2 1School of Earth Science and Engineering, Hebei University of Engineering, Handan, Hebei 056038, China. 2School of Architectural and Surveying Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi 341000, China. Inadequacy of rock mechanics chamber test devices and test systems that cannot accurately simulate gradient static stresses on specimens, this paper presented an innovative testing technique, which relates to the stress wave propagation of rock subjected gradient static stress. The method involves modification of a split Hopkinson pressure bar, such that the test specimen is subjected to gradient static stress and axial impact loading. The device has the features of simple loading and multiple static stress gradients, which verifies the feasibility of stress wave propagation test of red sandstone specimens under linear gradient static stress and conducts stress wave propagation test of red sandstone specimens under linear gradient static stress. Tests on red sandstone specimens with different static stress gradients show that the stress wave propagation of the specimens under gradient static stress is different with their corresponding homogeneous static stress state. The attenuation coefficients of stress waves are different under different conditions, and loading gradient static stress can accelerate the attenuation process. The results of this study will be useful for the analysis of stress wave propagation in deep engineering blasting and the stability analysis of adjacent structures. Keywords: Stress wave propagation; Rock; SHPB system; Gradient static stress ...

Challenges Facing Teachers Implementing Continuous Assessment: The case of Tililli General and Preparatory School

Research Article of Scientific Research and Reviews Challenges Facing Teachers Implementing Continuous Assessment: The case of Tililli General and Preparatory School Bogale Aligaiz Agalu Department of History, Injibara The study investigated the challenges facing teachers’ implementing continuous assessment in the Tililli general and preparatory school with the emphasis on how these challenges influence effective teaching and learning and how a teacher deals with these challenges on a day to- day basis. For this study, a qualitative research method was selected. This method seeks to understand the diversified underlying challenges, understanding and experiences of the teacher in this study. In order to achieve this method, data collection instruments such as the questionnaire would be used to obtain reliable data, a pilot test and follow-up interviews were utilized. All teachers age, gender, name of subject and grade who teaches, teaching experience, professional qualification or whether they were permanent or temporary, local or foreign was included that participated in filled questionnaire and interview. All teachers recommended that the education should support teachers in implementing the continuous assessment by motivating them. The department should outsource trainers to train teachers. Keywords: Challenges, Implementation, Continuous Assessment ...

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Scientific Research and Reviews

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