Physical-Mechanical Properties Of Palm Kernel Activated Carbon-Epoxy (PKAC-E) Composite

Palm kernel activated carbon-Epoxy (PKAC-E) composite possess good properties to function as a self-lubricated material in the dry sliding conditions. However, there are no previous studies have focused on the physical-mechanical properties of this composite. In this study, the effect of PKAC composition on the physical-mechanical properties of the composite was investigated. The polymer resin was reinforced with 65%, 70%, and 75% by weight of PKAC and compacted into a die at 70°C with 20-ton pressure for 15 minutes by using compaction technique. The specimens were prepared to conduct tensile, hardness,porosity, density, and water absorption tests. It was observed that the most interesting properties for PKAC-E composite have found in the hardness and density tests. The properties of PKAC-E composite 65-35% were better than other two composites 70-30% and 75-25% in terms of high hardness and low density, while the PKAC-E composite 70-30% was slightly better in terms of tensile strength properties. In addition, the PKAC-E composite 65-35 % has proved its superiority in terms of hardness and density properties with other synthetic-natural reinforced polymer composites. PKAC-E composite with the optimum properties has high hardness, lightweight, low-cost and can be very useful for further industrial applications and other machinery parts

Impact of hookworms and their secreted proteins on the microbiota and subsequent development of type 2 diabetes in mice

Zainab Khudhair Agha examined the potential of Nippostrongylus brasiliensis infections and their excretory/secretory (ES) proteins as therapeutics in mouse models of T2D. Agha found that infection with N. brasiliensis or their ES protected against T2D. This reveals novel mechanisms by which gastrointestinal nematodes and their ES proteins can be harnessed as a source of next generation therapeutics for inflammatory and metabolic diseases

An Investigation of Factors Predicting Academic Writing Difficulties Among First-Year Doctoral Students

This exploratory study investigated the variables that predict academic writing difficulties (AWDs) among first-year doctoral students, international and domestic, at a large, publicly funded research university in Southeastern United States. Data were collected through an online survey. The final sample size contained 111 first - year students, domestic and international from various doctoral programs. The first analysis examined factors predicting first-year doctoral students\u27 self-assessed writing difficulties, using Multiple Linear Regression. Five factors were statistically significant predictors of AWDs: Asian race, Colleges of Business, Engineering, and Science, and the age between fifty-five to sixty-four. The remaining factors associated with age, Race, or College were not statistically significant. The second analysis examined differences between domestic and international students using Multivariate analysis of variance (MANOVA) and Multivariate analysis of covariance (MANCOVA). The MANOVA results indicated statistically significant differences in the AWD and GRE writing scores between domestic and international students, but no statistically significant difference was found between the two groups for Motivation. However, when GRE writing scores were used as a covariate, the MANCOVA revealed statistically significant differences for both Motivation and AWD between international and domestic doctoral students. The findings of this study have important pedagogical implications for doctoral students, graduate faculty, curriculum designers, university\u27s administrators, and universities writing support programs

Employment of Qur'anic Stories in the Service of Civil Society

The Qur'anic methods and their impact on the building of man and society---I chose this title because the Qur'anic stories derive from their lessons, and if we apply them to our contemporary reality and serve civil society, we will live in comfort, tranquility, and justice. It is He who is between His hands and the detailing of all things, and guidance and mercy for people who believe [Yusuf: .[111 The nature of the research required an introduction, three chapters, a conclusion, sources, and references. Introduction: After thanking and praising the Almighty and praying for His Prophet, I mentioned the reason for choosing the topic and the research plan. The first topic was Quranic stories and their goals; the second was civil society, its advantages, and its characteristics; and the third was the use of Quranic stories. Conclusion: The included the most important results of the research. In conclusion, I have made a modest effort in this research, for whatever was right in it is from God alone, to Him be praise in the first and the hereafter, and whatever was found in it of error, slippage, or omission is from myself and the devil, and I ask God's forgiveness for that. And I ask God to make this work purely for His sake and to teach us what will benefit us; we know that He is the guardian and the one who is able to do it. Keywords: employment- Qur'anic - stories in the service- of civil societ

Development of a Hybrid Multi-Functional Adsorbent-Solar-Photocatalyst for Detecting and Removing Toxic Heavy Metals and Refractory Pollutants from Water/Wastewater

In this thesis, treating portable water from hazardous pollutants such as dyes were studied by preparing TiO2/ZSM-5 mesoporous and modified RGO/TiO2/ZSM-5 mesoporous. Additionally, novel optical conjugated mesoporous adsorbents were prepared to treat portable water from heavy metal ions such as Hg2+ and Pb2+. Results show significant improvement over previous efforts by researchers. The work presented here has profound implications for future studies of wastewater treatment, and may one day help solve the problem of water scarcity

Investigating Iraqi EFL Secondary School Students' Perceptions towards Using Mobile Language Learning Technique

Changes in mobile technologies, developments in information technologies and telecommunication, computers programs and expansion of mobile market, likewise have inspired people to make use of these “anytime” and “anywhere” technologies in second language teaching. Use of mobile devices in language teaching has been the focus of language learning studies since language learning necessitates interaction and autonomy which are the key concepts in mobile assisted language learning for learners. The research aims at investigating Iraqi EFL secondary school students' perceptions towards using mobile language learning technique. To achieve the aim of the present research, a sample of 40 secondary school students were chosen randomly from many schools . To fulfill the aim of the study, the questionnaire of students consists of (17) items. After the analysis of the data, the findings indicated that the vast majority of students had had used their mobile phones to study English. Also, they expressed their welcome towards using this technology to study English in the future. It is recommended to promote the use of mobile learning devices, and encourage students to use mobile as a means of learning and teaching English language in various stages of education

Principais problemas de fala que os alunos adultos de EFL enfrentam enquanto se comunicam

Speaking is one of the most important skills in English language. It is the active form of language whereby EFL learners produce the language. This production of language goes through a mental process in connection with other skills such as writing. However, EFL learners use speaking skill to communicate most of the time. Therefore, teachers should put more emphasis on speaking skill inside the classroom. In fact, there are various reasons for teaching speaking skill. Nevertheless, there are major speaking problems that EFL learners face during the learning process. This research tries to highlight the importance of speaking skill and the reasons behind teaching it. It also addresses some major speaking problems that EFL learners face and the causes of these problems. Finally, the research suggests some solutions to overcome such problems.Hablar es una de las habilidades más importantes en el idioma inglés. Es la forma activa de lenguaje mediante la cual los estudiantes de EFL producen el idioma. Esta producción de lenguaje pasa por un proceso mental en conexión con otras habilidades como la escritura. Sin embargo, los estudiantes de EFL utilizan la habilidad de hablar para comunicarse la mayor parte del tiempo. Por lo tanto, los maestros deben poner más énfasis en la habilidad de hablar dentro del aula. De hecho, hay varias razones para enseñar habilidades para hablar. Sin embargo, hay problemas de habla importantes que enfrentan los estudiantes de EFL durante el proceso de aprendizaje. Esta investigación trata de resaltar la importancia de la habilidad de hablar y las razones detrás de la enseñanza. También aborda algunos de los principales problemas de habla que enfrentan los estudiantes de EFL y las causas de estos problemas. Finalmente, la investigación sugiere algunas soluciones para superar tales problemas.Falar é uma das habilidades mais importantes do idioma inglês. É a forma ativa de linguagem através da qual os estudantes de EFL produzem a linguagem. Esta produção de linguagem passa por um processo mental em conexão com outras habilidades, como a escrita. No entanto, os alunos do EFL usam a capacidade de falar para se comunicar na maioria das vezes. Portanto, os professores devem colocar mais ênfase na capacidade de falar dentro da sala de aula. Na verdade, existem várias razões para ensinar habilidades de fala. No entanto, existem problemas importantes de fala enfrentados pelos alunos do EFL durante o processo de aprendizagem. Esta pesquisa tenta destacar a importância da capacidade de falar e as razões por trás do ensino. Ele também aborda alguns dos principais problemas de fala enfrentados pelos estudantes de EFL e as causas desses problemas. Finalmente, a pesquisa sugere algumas soluções parasuperar tais problemas

Pressure loss prediction and control model for water treatment units

Water treatment compact units are widely applied in Iraq for production of drinking water. Treated water quality meets world Health Organization (WHO) standards. Present work focuses upon compact water treatment units design, power and pressure drops control modeling and simulations. Computer program software (compact pro) was developed to calculate the pressure losses in piping network and process equipment's. Results obtained for pressure drop unit length for different pipe diameters and roughness, show that for pipe diameter above (200 mm) for (200 m 3 /hr),water pressure drop almost the same, while for pipe diameter less than (200 mm), water pressure drop is minimum for PVC and Stainless steel and maximum for galvanized steel. As the piping roughness increase, pressure drop will increase in general for any water internal flow rate. As internal flow rate increased, water pressure drop increase .This result is very important for process designer. Comparisons between results of Compact Pro Software and Pipe flow expert Software for different Input data, shows a good agreement which not exceed 8.6% as maximum. There are only slight change in pressure and pressure drop to the proposed model for compact water treatment unit, sensible change in pressure and pressure drop in the sand filtrations stage. Power calculations for the two water treatment stages, including shaft power for pumps motors for different piping materials. Results show that power can be saved up to more than 85 %

The Effectiveness of Integrated Supply Chain Management In Internal Audit As A Tool For Cost Control

In a bid to increase the level of organizational efficiency and success, internal auditors always form an essential part of a firm's supply chain management process. Based on their role of ensuring proper risk reduction through detection and prevention of fraud within organizations, the role of internal auditors cannot be overlooked. The supply chain has major impact on the company's business strategy directly affecting its operational costs. Supply chain performances within the organization have a significant impact on the company's ability to provide services to their customers and create added value. Internal audit of the supply chain is one of the most powerful and fastest ways to reduce operational costs and provide the company competitive advantages in the global market in times of economic crisis. The aim of this paper is to present the key areas of internal audit activities in assessing risk and analyzing the functioning of the supply chain. Ensuring the effectiveness of internal audit work and in the discharge of duties, the independence of such an office always has to be guaranteed. The management of the organization still has to provide support to the internal auditors to ensure that they provide timely and accurate data related to costs. This study, therefore, seeks to provide an overall look into the various aspects through which internal audit work may be used in enhancing the control of the organization's costs. Further, the study will identify the gaps that have led to the failures of the system in detecting and preventing cost-related frauds. The study will provide recommendations for addressing such gaps within the internal audit framework