Model tests on single batter piles subjected to lateral soil movement

A series of laboratory tests have been carried out to investigate the lateral response of battered piles under lateral soil movement. Model tests were carried out using instrumented rigid aluminium piles. The piles were embedded in homogeneous sand soil at batter angles &beta = 0°, ±10° and ±20° were subjected to two types of lateral soil movement profile. The results obtained from the study are presented in terms of the bending moment, shear force, soil reaction, pile rotation and lateral deflections along the length of the batter pile. The results of model tests on single vertical and batter piles under horizontal loads showed that the batter angle (&beta) significantly influenced the response of the batter piles. Regardless of the value of sand density, bending moment and deflection with batter angles &beta = +10° or positive batter piles were higher compared then vertical piles and negative batter piles

Reviews: 1. Kjetil Tronvoll and Daniel R. Mekonnen: The African Garrison State: human rights and political development in Eritrea; 2. Andebrhan Welde Giorgis (2014): Eritrea at a crossroads: a narrative of triumph, betrayal and hope

Review of: Kjetil Tronvoll and Daniel R. Mekonnen, The African Garrison State: Human Rights and Political Development in Eritrea, Rochester, NY: James Currey, 2014, ISBN-10: 1847010695, 223 pp.and Andebrhan Welde Giorgis, Eritrea at a Crossroads: A Narrative of Triumph, Betrayal and Hope, Houston, TX: Strategic Book Publishing, 2014, ISBN-10: 1628573317, 692 pp.Besprechung der Bände: Kjetil Tronvoll und Daniel R. Mekonnen, The African Garrison State: Human Rights and Political Development in Eritrea, Rochester, NY: James Currey, 2014, ISBN-10: 1847010695, 223 Seitenund Andebrhan Welde Giorgis, Eritrea at a Crossroads: A Narrative of Triumph, Betrayal and Hope, Houston, TX: Strategic Book Publishing, 2014, ISBN-10: 1628573317, 692 Seite

Examining Black Women's Identity in Maya Angelou's Poetry through Tajfel's Social Identity Theory: A Feminist Perspective

شعر مايا أنجلو هو تعبير عن هوية المرأة السوداء من خلال عدسة نظرية الهوية الاجتماعية لتاجفيل، منظور نسوي.  تهدف هذه الدراسة إلى استكشاف الهويات الثقافية وخبرات النساء السود في مجتمع مناهض للسود باستخدام منظور نظري نسوي أسود.  تقر الدراسة بالتجارب الثقافية الفريدة للمرأة السوداء بغض النظر عن تنوعها وتستخدم أسلوبًا ضمنيًا مقارنًا ونوعيًا واستكشافيًا وجدليًا وتحليليًا للبحث العلمي. تنقسم هذه الدراسة إلى مقدمة وثلاثة أقسام، وتوفر تحليلًا متعمقًا لشعر مايا أنجلو وعلاقته بهوية المرأة السوداء.  تسلط نتائج هذه الدراسة الضوء على مدى تعقيد تجارب النساء السود وهوياتهن الثقافية في مواجهة الاضطهاد. تركز الدراسة أيضًا على تحليل الطرق التي يعكس بها شعر مايا أنجلو تجارب وهويات النساء السود، وكيف يمكن استخدام نظرية الهوية الاجتماعية لتاجفيل لفهم هذه التجارب. تركز الدراسة بشكل خاص على تحليل قصائد مختارة لمايا أنجلو ودراسة موضوعات الهوية والقمع والمقاومة في عملها. تستكشف الدراسة أيضًا كيف يعكس عمل أنجلو مبادئ الحركة النسائية السوداء والنظرية النسوية، وكيف يمكن استخدام عملها لتعزيز فهمنا لتجارب النساء السود.           Maya Angelou's poetry is an expression of black women's identity through the lens of Tajfel's Social Identity theory, a feminist perspective. This study aims to explore the cultural identities and experiences of black women in an anti-black society by using a black feminist theoretical perspective. The study acknowledges the unique cultural experiences of black women regardless of their diversity and uses an implicit comparative, qualitative, explorative, argumentative, and analytical method of scientific research. Divided into an introduction and three parts, this study provides an in-depth analysis of Maya Angelou's poetry and its connection to black women's identity. The findings of this study shed light on the complexity of black women's experiences and cultural identities in the face of oppression. The study also focuses on analyzing the ways in which Maya Angelou's poetry reflects the experiences and identities of Black women, and how Tajfel's social identity theory can be used to understand these experiences. The study specifically focuses on analyzing empowering selected poems _ Just Give Me a Cool Drink of Water ’Fore I Diiie (1971)_ by Maya Angelou and examining the themes of identity, oppression, and resistance in her work. The study also explores how Angelou's work reflects the principles of Black feminism and feminist theory, and how her work can be used to further our understanding of the experiences of Black women

Centralizing (Sigma, Tau)-Derivations on Prime Gamma-Rings

More information can be found in the full paper

Centralizing Higher Left Centralizers on Prime Gamma Rings

In this paper  we study the commutativity  of prime ................

Assessing the impact of velocity dip and wake coefficients on velocity prediction for open channel flows

The aim of the present study is to assess the impact of the velocity-dip and wake strength on the velocity prediction using the dip modified laws. The dip modified laws, particularly the dip modified log wake law (DMLW-law), are preferred over the traditional wall laws in the narrow open channels. This is mainly because these analytical-based laws basically rely on parameters for the velocity dip (α) caused by secondary flow and for the wake strength (Π) due to the turbulence and boundary walls. In this study, comprehensive expressions for estimating these two key parameters were proposed and tested for smooth and rough flows. The results indicated that the proposed expressions can noticeably improve the application of the DMLW-law model to both smooth and rough flow

Some Biochemical and Hematological Parameters among Petroleum and Cement Factory workers in Sulaimaniyah City/ Kurdistan/ Iraq

The objective of the current research was to study any alteration in the biochemical and hematological parameters among exposed workers in Petroleum and Cement Factories located in the Bazian basin northwest Sulaimaniyahcity,Iraq .we found  a significant increase  in the average BLL and serum iron values among cement and petroleum refining workers(11.3 µg/dL)and(173 µg/dL)  successively .As well among the studied groups the workers at Mass CF had the highest BLL (15.5 µg/dL) and serum iron(216 µg/dL). An increase in the average values of serum creatinine and AST levels and a significant decline in mean values of ALP among the workers, while, no significant difference were found between other studied biochemical parameters .The hematological analysis revealed a significant increases in the values of RBC, HCT and MPV, in addition to, a decrease in MCHC. Oppositely, no significant differences were found between other blood cell parameters. Keywords: Petroleum and Cement Factories toxic dusts and fumes. Blood lead, Iron biochemical and hematological parameter

Extraction and Characterization of Peppermint (Mentha piperita) Essential Oil and its Assessment as Antioxidant and Antibacterial

ABSTRACT       The aim of this study is to extract and characterize peppermint essential oil and assess it as antioxidant and antibacterial activity. The extraction processes, chemical composition, total phenolic contents (TPC), total flavonoid contents (TFC), antioxidant and antibacterial activity were studied. The oil was extracted by three methods: steam distillation, solvent and soxhelet.  The results indicated that the highest oil extraction was obtained by soxhelet method 1.5±0.12 and 1.2±0.12 ml/100 gm and the lowest result recorded by steam distillation 1.1±0.09 and 0.9±0.14 ml/100gm from fresh and dry samples, respectively. The chemical composition of fresh and dry sample were determined by using gas chromatography and the results showed that there were 26 components of volatile compounds were identified in the essential oil isolated from peppermint. The antibacterial potential of mint essential oils was evaluated by Muller Hinton agar well diffusion method against selected bacteria. The essential oils showed higher activity against Staphylococcus aureus and Salmonella 19±1.41 and 16.5±2.12 mm, respectively, for fresh sample and showed lower activity against Escherichia coli and Klebsilla pneumonia 8.5±0.70 mm and nil, respectively, for dry sample. The TPC of fresh and dry samples were 14.00±0.12 and 8.80±0.09 mg /kg, respectively. TFC of the mint essential oil was determined in comparison with rutin were 8.1±0.09 and 5.0±0.07mg/kg, for fresh and dry sample, respectively. The results showed decrease in peroxide value at 30, 60, 90, 120 and 150 min compared with blank sample without essential oil for wet and dry mint. DPPH inhibition percentages were recorded and inhibition concentrations at 50% activity (IC50) were 0.651±0.09, 0.683±0.6 and 0.161±0.07 mg/mL for wet, dry samples and standard respectively. It can be recommended that further study on sensory analysis of food products containing mint essential oil to evaluate its acceptability and shelf life.

Performance of a local signalized intersection for handling traffic operation in Baghdad City

The inspection of the flexibility and performance of a local signalized intersection in managing traffic operation in Baghdad city is the main target of this study. Andalus intersection is one of the important local intersections in Bagdad city which recorded remarkable traffic congestion problem now a days and have been chosen in this study as a part of continuous studies due to its vital location. Smart Traffic Analysis (STA) software is used to give an aspect to the inefficient performance of the Andalus signalized intersection having three approached links and four exit legs while SYNCHRO software is used to simulate the data analysis and offer different alternative solutions to solve the congestion problem. From the obtained data analysis it has been found that the best suggested alteration for handling the current traffic volume of each studied intersection approach is the signalized intersection with optimum cycle time combined with the addition of two lanes, where the mean delay for the entire intersection can be reduced by approximately 26% by applying alteration No.1 while the mean delay for the entire intersection can be reduce approximately by 31% by applying alteration No.2. Furthermore, the queue length for the entire intersection can be reducing by approximately 6% and 17% for alteration No.1 and No.2 respectively