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A PROPOSED VISION FOR DEVELOPING AGRICULTURAL EXTENSION CENTERS IN CENTRAL IRAQ
(Society for the Advancement of Breeding Researches in Asia and Oceania (SABRAO), 2024-06-05) A.I. KHAMIS; N.S. ALI; J.M. SALEH
The research aimed to prepare a theoretical vision, including a set of proposed standards for developing work in Agricultural Extension Centers in the Central Governorates (Baghdad, Diyala, Babylon, Al-anbar, and Salah al-Din), within seven important guiding areas. Using the descriptive approach to conduct this study, the sample community included all agricultural extension workers working in research centers of central Iraq governorates, totaling 95 respondents. The two-part questionnaire served as a tool for collecting data from the respondents. The first part represented opinions of agricultural extension agents about the extent of application and adoption of suggested standards in the work of agricultural extension centers. Meanwhile, the second part included the respondents’ opinions about the degree of their approval of the proposal to develop the extension centers. The study concluded a large proportion of the respondents believe a weakness existed in the level of application of the recommended standards in the operation of the agricultural extension centers. It is evident in not adopting the principle of decentralization when formulating the goals of the extension centers.
Analyzing the Effectiveness of Machine Learning Techniques in Detecting Attacks in a Big Data Environment
(American Scientific Publishing Group (ASPG), 2025-01) Omar Dhafer Madeeh; Osamah M. Abduljabbar; Huda Mohammed Lateef
Protecting big data has become an extremely vital necessity in the context of cybersecurity, given the significant impact that this data has on institutions and clients. The importance of this type of data is highlighted as a basis for decision-making processes and policy guidance. Therefore, attacks on this data can lead to serious losses through illicit access, resulting in a loss of integrity, reliability, confidentiality, and availability of this data. The second problem in this context arises from the necessity of reducing the attack detection period and its vital importance in classifying malicious and non-harmful patterns. Structured Query Language Injection Attack (SQLIA) is among the common attacks targeting data, which is the focus of interest in the proposed model. The aim of this research revolves around developing an approach aimed at detecting and distinguishing patterns of loads sent by the user. The proposed method is based on training a model using random forest technology, which is considered one of the machine learning (ML) techniques while taking advantage of the Spark ML library that interacts effectively with big data frameworks. This is accompanied by a comprehensive analysis of the effectiveness of ML techniques in monitoring and detecting SQLIA. The study was conducted using the SQL dataset available on the Kaggle platform and showed promising results as the proposed method achieved an accuracy of 98.12%. While the proposed approach takes 0.046 seconds to determine the SQL type. It is concluded from these results that using the Spark ML library based on ML techniques contributes to achieving higher accuracy and requires less time to identify the class of request sent due to its ability to be distributed in memory.
Assessing Awareness Level of Agricultural Extension Agents Regarding Impacts of Climate Change on Agriculture Sector and Coping Strategies
(ResearchersLinks Ltd, 2025-01-20) Adnan Ibrahim Khamis; Jasim Mohammed Saleh; Najwa S. Ali; and Anhar Mohamed Ali Hasan
This study was aimed at identifying the awareness level of the agricultural extension staff in the Agricultural Extension, Department of Training and its affiliated training centers in Baghdad Governorate, regarding climate change and its effects on the agricultural sector and identifying the mechanisms and procedures adopted by the agricultural extension regarding these risks. These procedures included five topics (administrative and technical, irrigation water, crops, agricultural land, and environment). Researchers included agricultural adviser staff in the Department of Agricultural Extension and its affiliated training centers so that the number of targeted staff was reached (161). The questionnaire used to collect data was adopted, it included two fields, The first included (20) statements to identify the level of awareness of agricultural extension staff for the risks of climate change on the agricultural sector, while the second field included (50) statements representing mechanisms and procedures adopted by agricultural extension in facing these risks. A statistical analysis program (SPSS) was used to process the research data. So this study showed that most agricultural extension staff have a high level of awareness regarding climate change and its impact on the agricultural sector especially in administrative and technical issues related to crops and irrigation water conservation, also there are no joint units and committees for emergency management and risks resulting from the consequences of climate change, lack of cooperation and coordination with local and international efforts in exchanging climate information and significant weakness in the application of laws and legislation that would hold parties that contribute to accountability and deterioration of the agricultural environment. The study recommends activating the role of agricultural extension due to the phenomenon of climate change in the agricultural sector.
Characterization and use of activated carbon synthesized from sunflower seed shell in the removal of Pb(II), Cd(II), and Cr(III) ions from aqueous solution
(Springer Nature, 2024-03-13) Nahla Hilal; Ibtihal A. Mawlood; Wahran M. Saod; Ahmed S. Al‑Rawi; Abdulsalam M. Aljumialy
In this work, carbon-based nanomaterials such as active carbon which is prepared from com mon sunflower (Helianthus annuus) seed shell, and the characterization of the activated carbon NPs were studied using FTIR (Fourier transform infrared spec troscopy), XRD, SEM, EDS, and DTA techniques. Activated carbon NPs have been used in the adsorp tion of Pb(II), Cd(II), and Cr(III) ions from the aque ous phase. The results showed the highest adsorption efficiency was 99.9%, 92.45%, and 98% for Pb(II), Cd(II), and Cr(III) ions respectively at a tempera ture of 25 °C, pH = 7–9, and a time of 60 and 180 min, in addition to the accordance of the adsorption models for activated carbon with the Freundlich iso therm model at the value of R2 (0.9976, 0.9756, and 0.9907) and Langmuir isotherm model (0.966, 0.999, and 0.9873) of the Pb(II), Cd(II), and Cr(III) ions,
Compared Efect of Nano Date Pits and Nano Sunfower Seed Shells on Properties of Green Cement Mortar
(Springer Nature, 2025-01-14) Nahla Hilal; Ahmed A. Alani; Meyyada Y. Alabdulhady; · Zouaoui R. Harrat; · Faisal G. AL‐Maqate
Agricultural waste, generated in massive quantities each year, poses environmental challenges and ofers an opportunity to enhance eco-friendly practices in construction. The current study aimed to address the concerns of minimizing agricultural waste and reducing the environmental impact associated with traditional cement production, including shortage in resources and carbon emissions. Thus, the feasibility of incorporating nano date pits and nano sunfower seed shells as sustainable additive materials in cement mortar were investigated. Three diferent nanomaterials content were used: (1, 3, and 5%), these nano additives were added into mortar mixtures to assess their infuence on fresh and hardened characteristics, as well as on the microstructure. Fresh density and fowability were used as a measure to evaluate workability, while hardened properties such as density and compressive strength were utilized to evaluate the structural integrity. Microstructural analyses were also conducted through scanning electron microscopy (SEM) and X-ray difraction (XRD). The experimental results revealed that nano sunfower seed shells decreased fowability by 8–42%, while nano date pits had a lower impact, with reductions from 4 to 25%. Fresh density decreased with the increasing of nanomaterial content, particularly with the sunfower seed shells due to their lighter weight and higher porosity. For hardened characteristics, dry density dropped by approximately 20% in sunfower seed shell mixtures, while date pit mixtures density was reduced gradually, supporting the development of lightweight mortars. Furthermore, the mixture with 1% nano date pits has enhanced compressive strength by up to 22% at 28 days, attributed to the pozzolanic activity of nano date pits that refned the microstructure. SEM and XRD analyses revealed considerable interactions between the nano additives and the cement matrix. Furthermore, these analyses showed dense hydration products and enhanced contact zones between cement and aggregates, promoting structural integrity. The current study fndings assure the potential of nano agricultural waste materials to improve sustainable mortar formulations, ofering lightweight, durable, and eco-friendly alternatives to traditional cement-based mortars.
Design an efficient neural network for solving steady state problems
(Elsevier, 2024-09) Ashraf Adnan Thirthar; Luma N. M. Tawfiq; Kamal Shah; Thabet Abdeljawad
In this article, the mathematical model of steady state problems based on horizontal radial flow in homogenous confined aquifers has been presented. Then we design efficient neural network (ANN) to solve the equation in polar coordinates. A reliable unconstrained optimization method has been used as training algorithm to get high accuracy results. The results illustrated by contour maps. The new effective Levenberg-Marquardt method (NLM) has been implemented to solve the problem. A comparison between the training, testing and validation results has been presented. The weight of the ANN will be chosen such that satisfied local minimizer. Furthermore, the quadratic convergence of NLM has been proved. The results reveal that the suggested design is effective, time saver, and applicable for solving steady state problems.
Durability and hardened characteristics of cement mortar incorporating waste plastic and Polypropylene exposed to MgSO 4 attack
(Elsevier, 2024-12) Nahla Hilal; Osamah Mohammed G. Al-Kerttani; Sheelan Mahmoud Hama; Nadhim Hamah Sor; Qais Sahib Banyhussan; Taher A. Tawfik
Annual waste plastic disposal has grown, harming nature. Utilising this waste in concrete production may help preserve building resources. This study tested cement mortar with polyvinyl chloride (PVC) and polypropylene (PP) substituted for sand aggregate at 0, 5, 10, 15, and 20 %. The samples were nevertheless exposed to a 10 % and 20 % MgSO4 solution for a month. The properties of both fresh and hardened materials under these cir cumstances have been evaluated and contrasted with those evaluated under typical circumstances. For mixes including PP and PVC, the flow diameter increased. The rounded plastic particles provided fewer contact surfaces and less friction among mixtures, which reduced water consumption and improved workability, leading to an increase in slump flow. As the amount of plastic aggregate increases, the compressive strength decreased. Moreover, this pattern might be explained by the weakening of the bond between the surfaces of the plastic aggregate and cement paste. The hydration of cement may also be hampered by the hydrophobic properties of plastic aggregate. Like compressive strength, the splitting tensile strength decreased as the replacement level of plastic ratio increased regardless of its type under all conditions (normal and exposing to MgSO4 ). PP and PVC fine aggregate in mortar increases sorptivity under all situations. Following screening, those circumstances and PVC have the most impact on compressive strength. increasing PVC and PP at 10 % for each of them leads to lower values of compressive and tensile strength. An optimization process was implemented to determine the optimum value of PVC, PP, and MgSO4 . It shows that using PVC of 3.9 %, PP of 10.1 %, and MgSO4 leads to maximum compressive and tensile strength with the minimum cost and CO2 emissions.
Durability and Hardened Characteristics with SEM Analysis of Eco‑Efficient Self‑Compacting Concrete Partially Contained Waste Walnut Shell Particles as Fine Aggregate
(Springer Nature, 2023-07-23) Nahla Hilal; Hadi H. Edan; Nadhim Hamah Sor; Taher A. Tawfik
Substituting waste materials for natural aggregate in SCC can lead to the discovery of ecological building materials. Walnut shell (WS) is one of the agricultural byproducts that can be substituted for aggregate in SCC. In this study, WS was used as a replacement for fine aggregate in SCC by employing five different volume fractions ranging from 8 to 40% in incre ments of 8% while maintaining a constant percentage of limestone powder (10% by weight of cement). All SCC mixtures were evaluated for the fresh properties (slump flow, slump flow duration, V-funnel, L-box, and wet density) tests, hardened characteristics (compressive strength, splitting tensile strength, flexural strength, Schmidt rebound hammer, and ultrasonic pulse velocity) tests, scanning electron microscopy (SEM) analysis, and the effect of H2SO4 and MgSO4 solution with 5% concentration for one month period on the density, compressive and splitting tensile strengths. The hardened properties were performed at 28 and 56 curing periods. The results revealed that the workability and hardened properties of SCC mixtures decreased with increasing WS content, but the workability outcomes were within the standard specifications of SCC, except for the L-box test. The lowest compressive strength of 23.7 MPa was recorded for the mix containing 40% of WS, greater than the lower strength required for structural purposes. On the other hand, the density, compressive and splitting tensile strengths of all SCC mixes decreased after exposure period for both sulphate attacks. The investigation with SEM reveals that the increasing amount of WS produced more voids and less dense concrete compared to the control mix.
Effect of glass and nylon fibers on drying shrinkage of alkali activated blast furnace slag mortars
(Taylor & Francis, 2024-08-13) Nahla Hilal; Salih Taner Yildirim; Ahmet Kaan Yildirim
The environmental consequences of Portland cement (PC) manufacturing have prompted the exploration of alternative binders, such as the alkali activation of blast furnace slag (BFS), which is generated as a byproduct during the extraction of iron. While alkali-activated blast furnace slag (AAS) binders have some benefits over regular PC binders, they also suffer from disadvantages such as significant drying shrinkage. The study investigated the impact of Na dosage and curing conditions on alkali-activated blast fur nace slag mortar (AASM). The consistency of the specimens was tested for fresh, hardened properties, and was conducted. The optimum Na dosage and curing conditions were selected. In the second stage, 0.1% and 0.2% glass and nylon fibers were added to the selected optimum mortar. Consistency, fresh, mechanical, and durability properties tests were con ducted on the fiber mortars. The results showed that increasing the Na content increased the compressive and flexural strengths of AASM speci mens. Thermal curing provided high compressive and flexural strengths, whereas fiber addition reduced water absorption and drying shrinkage. The drying shrinkage value was reduced by 26.82 % for AASM specimens with 0.2 % nylon fibers by volume compared to AASM without fibers.
Effects of predator cooperation in hunting and prey fear in a generalist predator–prey model that includes global warming phenomena
(Springer Nature, 2024-11-26) Ashraf Adnan Thirthar; Bipin Kumar; Sushil Kumar Verma
Emissions of greenhouse gases from humanactivities are the cause of global warming. Some of the repercussions include habitat loss, altered competitive relationships, and temperature and ecosystem changes that are too large for migration. According to this study, the carrying capacity is affected by global warming. Furthermore, by developing a predation function that accounts for the effects of hunting cooperation and global warming, its influence on predation has been examined. The interaction between prey, predators, and global warming is described by a system of ordinary differential equations that includes the components listed above. During our investigation, we examine the existence and stability of equilibrium points, which reveals the model’s dynamic behaviors. Our model shows a range of bifurcations, including Hopf, transcritical, and saddle-node bifurcations, which mark critical shifts in system dynamics. To confirm these bifurcations, we derive and verify transversality conditions. Additionally, we construct one- and two-parameter bifurcation diagrams to visualize stability changes across the parameter space, identifying regions with distinct steady states and dynamic behaviors. Notably, our model also exhibits switching behavior, where shifts in parameters lead to transitions between different dynamic states, highlighting the complexity and richness of prey-predator interactions.
Mechanical performance of eco-friendly self-compacting concrete (SCC) mixtures and two-way slabs partially containing cement kiln dust as cement replacement and internally reinforced with waste plastic mesh
(Elsevier, 2024-08) Nahla Hilal; Ayad S. Aadi; Sheelan Mahmoud Hama; Weiwen Li; Nadhim Hamah Sor; Walid Mansour
A large quantity of cement kiln dust (CKD) is produced annually during the production of Portland cement. The majority of the produced CKD remains unused except in specific cases related to soil stabilization projects. The current research investigates the production of self-compacting concrete (SCC) mixtures, in which CKD is used as a substitute for cement in different weight proportions, 3 %, 6 %, 9 %, 12 %, and 15 %. The hardened mechanical properties of SCC, such as compressive strength, splitting tensile strength, and flexural strength, as well as the fresh state characteristics (i.e., slump flow diameter, T500, V-funnel, and L-box tests), were recorded and compared with the control mixture which was entirely cast using cement. Results revealed that with an increase in the CKD content beyond 6 %, the slump flow diameter of SCC mixtures significantly decreased. Also, the increase ratios in the V-Funnel flow time for self-compacting concrete mixtures, when replacing cement with CKD ratios of 3 %, 6 %, 9 %, 12 %, and 15 %, were 13.3 %, 30 %, 46 %, 58 %, and 66.7 % respectively, compared with the reference mixture. Additionally, the impact behavior of two-way SCC slabs cast using CKD ratios ranging from 3 to 15 % and internally strengthened using various patterns of recycled plastic mesh was inves tigated. Strengthening the SCC slabs using two layers of recycled plastic grids proved to be effective in preventing the projectile from penetrating the whole thickness of the SCC slabs, regardless of the CKD content.
On the Post-Heat Behavior of Cement Mortar Containing Mechanically Modified Ground Coal Bottom Ash
(Salud, Ciencia y Tecnología – Serie de Conferencias., 2024-05-31) Nahla Hilal; Fadzli Mohamed Nazri; Haneen Abdel Jabar; Khairunisa Muthusamy; Rahimah Embong; Mohammad I. Al Biajawi
Coal is widely recognized as a significant and essential fuel source due to its capacity to undergo combustion and produce heat in many different regions worldwide. Over the course of many decades, there has been a notable rise in power usage among individuals, thus resulting in an upsurge in the utilization of coal. The growth of mankind has a parallel rising trajectory with the utilization of cement in the building industry, as well as a corresponding rise in cement manufacturing. These two phenomena significantly contribute to the escalation of carbon dioxide (CO2 ) emissions and the improper disposal of coal ash, both of which pose significant environmental hazards. Coal-fired thermal power plants generate many waste products from industry, including coal-bottom ash (CBA), which may be effectively used in the production of mortar or concrete. This practice not only promotes the adoption of sustainable construction materials but also encourages the utilization of these wastes. In contrast, it is worth noting that cement manufacture yields a significant quantity of carbon dioxide emissions, so exerting a detrimental influence on the ecosystem. The reduction of environmental deterioration may be achieved by substituting cement with waste products. The substitution of Portland cement with reutilized coal combustion products has the potential to provide significant environmental and infrastructural advantages. This study presents an experimental investigation into the post-heat performance of cement mortars including ground coal bottom ash (CBA). To achieve this objective, an investigation was conducted to assess the strength qualities, residual strength, and mass losses of mortar specimens. These specimens comprised varying proportions (10 %, 20 %, 30 %, and 40 %) of CBA as a substitute for cement. To perform the heating procedure, samples were subjected to temperatures of 200°C, 400°C, and 600°C, which corresponded to room temperatures. The findings indicate that the use of ground CBA up to a proportion of 20 % yields mortar with the maximum value of compressive strength compared with the control sample. The use of a substantial amount of ground CBA has been shown to produce the most significant reduction in mass and decrease in strength when subjected to high temperatures. As a result, the residual strength of concrete experiences a decrease of 33,65 % when exposed to a temperature of 600°C in conventional concrete while for CBA in concrete decreases around 40,9 %. In general, the integration of ground CBA alternatives as an alternative to cement would result in a decrease in the need for the manufacture of cement and the environmental pollution associated with CBA discharge.
PHYSICS AND ITS RELATIONSHIP TO SENSE OF SELF AND SOCIAL INTELLIGENCE AMONG FIFTH-GRADE STUDENTS PREPARATION
(2024-12-12) Prof. Dr. Etimad Naji Fayyad
Self-awareness is a complex process that involves a person's awareness of himself and his understanding of his thoughts, feelings, and personal characteristics; this feeling goes beyond mere external perception, to include a deep understanding of who a person is, and how he interacts with and is affected by his surroundings. This ability to be self-aware is one of the main pillars in the development of the individual, as it enables him to evaluate his thoughts and behaviors and work to improve aspects of his personal and social life.
Possibility of Adding Biomedical Waste Plastic as Asphalt Performance Improvers
(AIP Conf. Proc. 3303, 040006, 2025-03-31) Nahla Naji Hilal; Khalid Awadh Mohammed; Sattar A. Mutlag; Alaa Dahamm Mamdooh
There are many types of human waste, including biomedical waste plastic, which is infectious and toxic, and its disposal is one of the main problems facing developing countries. In the process, countries must establish an extensive network of roads to maintain a stable economic and social environment. Research has shown that bitumen limitations necessitate careful consideration when building highways and transportation networks for development. It is possible to use biomedical plastic waste in road construction, reducing its environmental impact. It is considered economical and capable of improving the performance and characteristics of paved roads. The research aims to investigate the impact of biomedical waste plastic on the rheological characterization of bitumen, utilizing safer insulin syringes after treatment. Using mixing techniques, we prepared the modified bitumen from the waste. We added it gradually after heating the asphalt and waste. Researchers found that adding it could improve the bitumen's rheological properties, like its low penetration, flash point, fire point, and ductility, while still meeting the requirements for asphalt and having a high softening point and viscosity. In general, the results showed that increasing the content of biomedical waste as a percentage of the weight of bitumen improves the rheological properties of bitumen and paving performance. This also reduces the effect of cracking and improves the susceptibility temperature of asphalt. The results also demonstrated a 9.75% material cost reduction. This approach not only allows for the prudent disposal of hazardous biomedical plastic waste, but also reduces construction costs by saving some bitumen, making this type of asphalt more suitable for use in hot areas.
SEM analysis, durability and hardened characteristics of eco-friendly self-compacting concrete partially contained bentonite and waste walnut shells
(Taylor & Francis, 2024-12-09) Nahla Hilal; Nadhim Hamah Sor; Meyyada Y. Alabdulhady; P. Jagadesh; Kadhim Z. Naser
Reusing waste materials as aggregate in self-compacting concrete (SCC) may reveal green construction materials. Walnut shell (WS) can be used in place of aggregate in SCC. This study utilized five dissimilar volume fractions of WS as fine aggregate ranging from 8% to 40%, containing bentonite clay powder constant as 10% of cement weight. The SEM analysis, fresh proper ties and hardened characteristics of all SCC mixtures were assessed. Additionally, the impact of a 5% concentration of H2SO4 and MgSO4 solution for a month on the compressive and splitting tensile strengths and density were studied. The workability of all the LWSCC mixes satisfied standard requirements except of L-Box result; nevertheless, as the WS content increased, the workability of the LWSCC mixtures declined. Following the exposure period for both sulphate attacks, all characteristics of LWSCC mixes were reduced. In contrast to the control mixture, the SEM analysis shows that when WS was added in greater amounts, the concrete became less dense and had more voids. Furthermore, the statistical analysis was per formed by using two-way variance (ANOVA) technique which revealed that the effects of all independent variables on the strength and other properties of cement mortar were significant under all experimental conditions.
Study of effective removal of nickel and cobalt from aqueous solutions by FeO@mSiO2 nanocomposite
(Elsevier, 2024-08-15) Nahla Naji Hilal; Wahran M. Saod; Nisreen Jassam Alaallah; Ekhlas A. Abdulkareem; Mohammad I. AlBiajawi
In many regions of the world, water pollution from potentially harmful substances like nickel (II) and cobalt (II) ions is a recurring issue. The quality of rivers and lakes’ environments, wastewater discharge, and drinking water sources are all still significantly impacted by it. Many studies are focused on developing new treatment alterna tives since, although treatment is often necessary, it is not always possible or accessible in a particular setting. Nanotechnology provides significant potential for water treatment. Although it has been demonstrated that nanomaterials may effectively remove both different type from chemical pollutants—including organic and inor ganic—from contaminated source, their removal efficacy may be diminished by their propensity to flocculate. Iron oxide loaded with mesoporous silica (FeO@mSiO2) was effectively synthesized and characterized through the use of FTIR, SEM, TGA, XRD, and UV–visible spectral analysis. Tests and evaluations were conducted to de termine FeO@mSiO2 nanocomposite ability to remove nickel (II) and cobalt (II) from solution, and the ideal re moval conditions were determined at different condition Adsorption isotherms, Freundlich and Temkin isotherms to the data. FeO@mSiO2 composite material displayed significant efficacy in the removal of Ni and Co. The best removal rates were attained at pH 7 and 180-minute contact duration.
Studying the usability of recycled aggregate to produce new concrete
(Faculty of Engineering, Cairo University (CUFE), 2024-06-11) Nahla Hilal; Ola Adel Qasim; Mohammad I. Al Biajawi; Nadhim Hamah Sor; Taher A. Tawfik
One of the most significant environmental issues worldwide is garbage, particularly waste from construction materials, which is generated in substantial numbers. How ever, in the building industry, the significant extraction of natural resources such as cement, natural sand, and natural gravel poses a critical environmental challenge, depleting these resources at an alarming rate. There are some solutions that devel oped countries are resorting to, namely the division of construction waste into groups, where it is reused under the name of recycling construction waste to produce new, environmentally friendly building materials. The aim of this research includes a labora tory process study as it includes the use of the following ratios: 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, and 100%, under the process of replacing coarse plain aggregates includ ing coarse recycled aggregates and studying the most important mechanical proper ties of concrete. This research was carried out using fresh concrete properties such as workability tests and hardened concrete properties such as compressive strength, splitting, and flexural tensile strength examined at the durations of 7, 14, and 28 days. The research includes the investigation of the three main properties of concrete. After conducting the tests, the results have shown that the main property of recycled concrete is lower strength than that of conventional concrete, but it can be said that it is within the limits that can be used for construction. The results also showed that com pared to normal aggregates, development in the recycled aggregate percentage rates reduces the operational workability of concrete. The research proved that the maxi mum decrease in compressive, flexural, and tensile strength, density and the slump were 19.4, 18.3, 19.6, 19.5, and 25.0% respectively compared to the control concrete samples. Keywords: Compressive strength, Flexural strength, Tensile strength, Natural aggregate, Concrete, Recycled material, Waste materials
THE EFFECT OF A TRAINING PROGRAM FOR PHYSICS TEACHERS ON ARTIFICIAL INTELLIGENCE APPLICATIONS ON THEIR ATTITUDES TOWARDS ITS USE IN EDUCATION AND THEIR TEACHING PERFORMANCE
(2024-12-12) Prof. Dr. Etimad Naji Fayyad
The study indicated(Maher & Singer, 2007) pointed to the deficiency in the level of performance of pre-service science teachers in using educational technologies as one of the national standards for their preparation, and stressed the need for the teacher preparation program to pay attention to and train them on how to use educational technology to ensure the achievement of quality teacher performance.. The results of a number of studies, such as the study by Hero (2019), have shown thatHero) The positive impact of integrating technology into teaching on teacher performance, and that it plays a vital role in improving his productivity and performance inside the classroom, and that the better technology is integrated into teaching, the better his performance will be, and vice versa.
The Effect of Organizational Strategies on Physics Achievement Among Third-Grade Middle School Students
(2024) Etmad. N. Fayadh; Sameerah Adnan Thrther
The research aims to identify the effect of organizational strategies on the achievement in physics among third-grade middle school female students. The study is limited to third-grade middle school female students in Al-Anbar province for the academic year 2019–2020, covering the first five chapters of the first semester of the physics textbook for third grade. The research sample consisted of 60 students, with 30 students in the experimental group and 30 in the control group. Statistically, students who had previously failed were excluded to ensure equivalency due to their additional experience compared to their new peers. After applying the research tool and processing the data using appropriate statistical methods, the results showed significant differences between the average scores of the experimental and control groups in the achievement test following the application of organizational strategies.
The Impact Resistance of Fire Shooting for Self-Compacted Concrete Slabs Containing Ceramic Powder and Reinforced by Novel Waste Nylon Fiber
(Annales de Chimie - Science des Matériaux, 2024-08-04) Nahla Hilal; Aseel S. Mansi; Ayad S. Aadi; Taghreed Khaleefa Mohammed Ali; Haider A. Abdulhameed
In the present study, nylon waste fibers (NWF) were utilized for the first time to improve the impact resistance of self-compacting concrete (SCC) slabs against pistol shooting. Six ratios of NWF were used in the range of (0.25- 1.5 at an increment of 0.25) % with three different lengths (50, 70, and 90) mm for each ratio. The fresh properties, compressive strength, and Utara sonic pulse velocity (UPV) of SCC were also measured. The results indicate the positive role of NWF in improving compressive strength. However, the fresh properties are affected negatively by using NWF. The best impact resistance of the slab occurred when 1% of NWF with a length of 90 mm was utilized.