Aspect Βased Classification Model for Social Reviews

Aspect based opinion mining investigates deeply, the emotions related to one’s aspects. Aspects and opinion word identification is the core task of aspect based opinion mining. In previous studies aspect based opinion mining have been applied on service or product domain. Moreover, product reviews are short and simple whereas, social reviews are long and complex. However, this study introduces an efficient model for social reviews which classifies aspects and opinion words related to social domain. The main contributions of this paper are auto tagging and data training phase, feature set definition and dictionary usage. Proposed model results are compared with CR model and Naïve Bayes classifier on same dataset having accuracy 98.17% and precision 96.01%, while recall and F1 are 96.00% and 96.01% respectively. The experimental results show that the proposed model performs better than the CR model and Naïve Bayes classifier

Two-dimensional amine and hydroxy functionalized fused aromatic covalent organic framework

Ordered two-dimensional covalent organic frameworks (COFs) have generally been synthesized using reversible reactions. It has been difficult to synthesize a similar degree of ordered COFs using irreversible reactions. Developing COFs with a fused aromatic ring system via an irreversible reaction is highly desirable but has remained a significant challenge. Here we demonstrate a COF that can be synthesized from organic building blocks via irreversible condensation (aromatization). The as-synthesized robust fused aromatic COF (F-COF) exhibits high crystallinity. Its lattice structure is characterized by scanning tunneling microscopy and X-ray diffraction pattern. Because of its fused aromatic ring system, the F-COF structure possesses high physiochemical stability, due to the absence of hydrolysable weak covalent bonds

Organisational Justice and Organisational Commitment among Secondary School Teachers

The purpose of this study is to find the relationship between organizational justice (OJ) and organizational commitment (OC) among secondary school teachers. The sample consisted of 98 teachers working in 8 public secondary schools. OJ consists of three dimensions, namely, distributive justice (DJ), procedural justice (PJ), and interactional justice (IJ) which were used to measure the level of perception of justice among teachers, whereas to determine the level of commitment among teachers, the study used OC questionnaire. Pearson correlation and regression analysis methods were used to find the relationship and the impact of OJ on OC. The main findings of the study indicated that there is a positive and significant relationship between OJ dimensions and OC; DJ found highly correlated with OC. However, PJ and IJ positively and significantly predicted OC among secondary school teachers. The study could provide some significant literature contributions on the OJ and OC of secondary school teachers in developing countries

Carbon Nanotubes: Synthesis via Flame Fragment Deposition (FFD) Method from Liquefied Petroleum Gas

         تستخدم الدراسة الحالية طريقة ترسيب شظايا اللهب (FFD) لتخليق الأنابيب النانوية الكربونية (CNTs) من غاز البترول المسال العراقي (LPG) كمصدر للكربون. تم استخدام مفاعل محلي الصنع لتنفيذ إجراءات التحضير. للتخلص من الشوائب غير المتبلورة، تم صوتنة الأنابيب النانوية الكربونية في محلول بيروكسيد الهيدروجين ((30% wt H2O2 في درجة حرارة الغرفة ، متبوعًا بالصوتنة في حمام الأسيتون لإزالة الهيدروكربونات العطرية متعددة الحلقات (PAHs) المتولدة أثناء احتراق غاز البترول المسال. تم فحص الناتج المحضر، ومقارنته مع انابيب كربونية متعددة الجدران قياسية (MWCNTs(95%), Sigma  (Aldrich  باستخدام حيود الأشعة السينية (XRD) ، مطيافية رامان، التحليل الحراري الوزني (TGA) ، مطيافية الأشعة السينية المشتتة للطاقة (EDS) ، المسح الطيفي الإلكتروني (SEM) ، والمجهر الإلكتروني النافذ (TEM). في ظل الظروف التجريبية المطبقة، تؤكد نتائج التحضير التي تم الحصول عليها تخليق الأنابيب النانوية الكربونية متعددة الجدران (MWCNTs) مع نسبة من الأنابيب النانوية الكربونية قليلة الجدران (FWCNTs). للأنابيب النانوية الكربونية بنقاوة تزيد عن 65 في المائة وبمتوسط ​​قطرها يتراوح من 31.26 إلى 78.00 نانومتر.The current study uses the flame fragment deposition (FFD) method to synthesize carbon nanotubes (CNTs) from Iraqi liquefied petroleum gas (LPG), which is used as a carbon source. To carry out the synthesis steps, a homemade reactor was used. To eliminate amorphous impurities, the CNTs were sonicated in a 30 percent hydrogen peroxide (H2O2) solution at ambient temperature. To remove the polycyclic aromatic hydrocarbons (PAHs) generated during LPG combustion, sonication in an acetone bath is used. The produced products were investigated and compared with standard Multi-walled carbon nanotube MWCNTs (95%), Sigma, Aldrich, using X-ray diffraction (XRD), thermo gravimetric analysis (TGA), Raman spectroscopy, scanning electron spectroscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS) and Transmission Electron Microscopy (TEM). Under the applied experimental circumstances, the obtained characterization data confirm the synthesis of multi-wall carbon nanotubes (MWCNTs) with portion from few wall carbon nanotubes (FWCNTs). The average diameter of synthesized Carbon nanotubes ranged from 31.26 to 78.00 nm, with a purity of more than 65 percent

The Complete Mitochondrial Genome of an Atlantic Ocean Shortfin Mako Shark, Isurus oxyrinchus

We report the first complete mitochondrial genome of a shortfin mako shark from the Atlantic Ocean. The genome had 16,700 base pairs and contained 13 protein-coding genes, 2 rRNA genes, 22 tRNA genes, and a non-coding D-loop. There were 81 individual differences compared to the published mitochondrial genome of a shortfin mako from the Pacific Ocean, with most variability found in protein coding genes, especially ND5, ND3, and ND1. These highly variable genes may be useful population markers in future studies, and availability of a second mitogenome will assist with future, genome-scale studies of this IUCN Endangered species

Utilizing geographic information systems in pavement maintenance applications: Baghdad university as case study

management of the paved network system is a critical issue that always has been the main focus not just in this university, but also to other educational institutions and organizations At the University of Baghdad. These extensive networks are crucial systems at the university as it does not just include the roads, parking spaces, pedestrians' lanes, and sidewalks around the university campus, but also is also extended to a large-scale area, including the bus stations and terminals. This research is conducted in order to set up a smooth and reliable Pavement Maintenance Management System (PMMS) for the university's road lanes and parking spaces. A thorough analysis of related past studies has been done on the PMMS projects in Iraq and other countries to gain a comprehensive understanding on this topic. A PAVER system software is adopted in the study in order to develop a complete and integrated database and the GIS-based map layers for the road pavement and other extended engineering features. While there are past studies discussing the Maintenance and Rehabilitation (M&R) system for road pavement networks, though the systemic approach and forecast method is still missing. Hence, this project is conducted to help in providing a structural M&R system for the pavement networks

Homocystene and human astrocytes

Astrocytes are multipotent and serve surprisingly large and diverse variety of functions, providing for the overall brain homeostasis, assisting in neurogenesis, determining the microarchitecture of the grey matter, and defending the brain through evolutionary conserved astrogliosis programs. Astrocytes are specifically involved in various neurodegenerative diseases, including Alzheimer’s and Parkinson’s diseases, and various forms of dementia. Homocysteine is a nonessential sulphur-containing amino acid that had been linked with neurodegenerative diseases and aging

Amelioration of a saline sodic soil through cultivation of a salt-tolerant grass Leptochloa fusca

Reclamation of saline lands seems difficult for climatic and economic reasons, but cultivation of salt-tolerant plants is an approach to increasing productivity and improvement of salt-affected wastelands. A five-year field study was conducted to evaluate the effects of growing a salt-tolerant species Leptochloa fusca (L.) Kunth (kallar grass) on chemical properties of a saline sodic soil irrigated with poor quality groundwater. Soil salinity, sodicity and pH decreased exponentially by growing kallar grass as a result of leaching of salts from surface (0–20 cm) to lower depths (>100 cm). Concentrations of soluble cations (Na+, K+, Ca2+ and Mg2+) and anions (Cl−, SO42− and HCO3−) were reduced through to greater soil depths. A significant decline in soil pH was attributed to release of CO2 by grass roots and solublization of CaCO3. Both soil salinity and soil pH were significantly correlated with Na+, Ca2+, Mg2+, K+, Cl−, HCO3− and sodium adsorption ratio (SAR). Significant correlations were found between soluble cations (Na+, Ca2+ and K+), soluble anions (Cl−, SO42− and HCO3−) and the SAR. In contrast, there were negative correlations between soil organic matter content and all chemical properties. The ameliorative effects on the soil chemical environment were pronounced after three years of growing kallar grass. Cultivation of kallar grass enhanced leaching and interactions among soil chemical properties and thus restored soil fertility. The soil maintained the improved characteristics with further growth of the grass up to five years suggesting that growing salt-tolerant plants is a sustainable approach to biological amelioration of saline wastelands.J. Akhter, K. Mahmood, K.A. Malik, S. Ahmed and R. Murra