With increasing population and development, the resources of fossil fuels decreased, leading to the need to find alternative sources of energy. Furthermore, the use of fossil fuels is accompanied by several downsides including environmental fatality associated with toxic gas emissions from diesel engines and continuous increase of the price of diesel fuel. Biodiesel is one of the most important types of renewable energy that replaces the fossil fuel requirement (mineral diesel) and maintains eco-friendly sustainability. Calcium is an essential plant nutrient as it plays an important role in the formation of plant cell walls and membranes. Therefore, the fallen leaves of mango tree can be utilized to produce nano calcium oxide and se

   The region of Kirkuk and its surrounding areas, including (Baba, Jambour, Qara Chuq, Qaiyarah, Demir Dagh, Bai Hassan, Taq Taq, Makhul, Gilabat as well as southern Mosul and the cities of Erbil and Sulymania, are known as one of the oldest discovered oil fields in northern Iraq. This area presents a significant opportunity for further organic geochemical analysis to describe maturation zones and estimate economically generated hydrocarbons with particular reference to the Sargelu formation, to enhance hydrocarbons productivity. To assess the potential of these oil fields, it is essential to perform correlation, comparisons, and geochemical analyses of the data collected from exploration wells in the surrounding area. This approach p

   A comparative study for two nanoscale semiconductors (TiO₂ and WO₃) was conducted as heterogeneous photocatalysts to degrade about 50 ppm of Congo red dye in an aqueous solution. The reaction was carried out in a batch reactor placed in a dark box and equipped with an air pump. The dye solution and 0.2 g/L of the catalyst were mixed, firstly, in a dark environment to monitor the amount of adsorbed dye, then the ultraviolet light was turned on with two different powers (15 and 30 W) to study the photocatalytic degradation reactions. The results showed that TiO₂ had higher photocatalytic activity to degrade the dye. The CRD removal values for TiO₂ and WO₃ were 99.67 and 72.16 %, r

   Recently, one of the most crucial objectives for the petroleum refining industries is producing clean or eco-friendly fuel. The world demands clean diesel utilizing simple processes under safe conditions (i.e., moderate operating conditions). For this purpose, an oscillatory helical baffled reactor (OHBR) was designed to improve the oxidative desulfurization (ODS) process, which is achieved here by converting sulfur compounds found in diesel fuel using a new homemade nanocatalyst. First, the homemade catalyst support, γ-alumina nanoparticles, was prepared using precipitation technology. The γ-Al₂O₃ was then used to design the synthetic nanocatalyst made of iron oxide using the IWI technology with 5% Fe_2<

   There is a growing imperative to extract oil not only through primary and secondary means but also via tertiary recovery methods to meet the escalating global energy demands. Consequently, Enhanced Oil Recovery (EOR) is slated to increase significance in the oil industry in the coming years. The amalgamation of low salinity water (LSW) with chemicals to augment oil recovery has gained substantial traction in recent years owing to its demonstrated effectiveness. In this study, a systematic investigation utilizing contact angle measurements to elucidate the underlying mechanisms was undertaken. The results reveal that the contact angle (CA) demonstrated the effectiveness of the combined fluid in altering the wettability from oil-wet t

Elastic parameters are essential for understanding the behavior of materials under stress, including their tendency for deformation and failure. Elastic modulus is a key parameter, which can be determined using static and dynamic methods. Dynamic methods involve analyzing properties from well logging such as density and wave velocity (compressional and shear waves), while static techniques quantify properties in a laboratory setting.  While static techniques are the most accurate, they are also expensive and time consuming. However, there are correlations available to estimate static modules from dynamic modules, although many are specific to certain formations and not applicable to different rock types. In this paper, a new correlation

   The assessment of petroleum characteristics through well log analysis has always been essential for identifying and evaluating hydrocarbon-bearing zones. This study presents a comprehensive re-evaluation and correction of five well log data sets from Khasib formation which is the primary reservoir in the East Baghdad oil field (10 kilometers east of Baghdad City). The corrected data sets were utilized to calculate key parameters, including water saturation, porosity, lithology, and shale volume. Lithology was determined using M-N cross-plots and neutron-density analysis, which showed that the Khasib formation mainly consists of limestone, with calcite as main mineral components and minor amounts of dolomite. Shale volume was assesse

اهتم الفقهاء اهتمامًا كبيراً بمسائل الشريعة حتى لم يدعوا فيها شاردةً ولا واردةً إلا وناقشوها وسبروا أغوارها، ومن هؤلاء الفقهاء وعلمٌ من أعلامهم الإمام ابن أبي العز الحنفي، الذي تصدى لكتاب مهم من كتب الحنفية، إلا وهو كتاب "الهداية"، واعترض كثيرًا من مسائله، وكانت إحدى المسائل التي اعترض عليها مسألة الوقت المختار لصلاة الفجر. وقد أفردتها في هذا البحث وعرضت فيها مذاهب الفقهاء واستدلالاتهم مع مناقشتها، وذكر أ

      Stimulation plays a crucial role in the oil and gas industry, particularly in the acidizing process. Thus, the development of acidification processes is essential for improving the productivity index and enhancing the physical properties of reservoirs. This research investigates the effect of Tin oxide (SnO₂) and Titanium dioxide (TiO₂) nanomaterials on the surface properties in acidic media of hydrochloric acid (HCl) at various acid and nanomaterials concentrations, as well as their impact on the wettability of carbonate rocks. To achieve this, surface tension, contact angle, and zeta-potential were measured using various instruments. The findings show that SnO₂ and TiO₂,

   Hydrocarbon estimation is a vital step for formation evaluation and development plans, significantly impacting the decision-making process. Well logs data from 40 wells in the Nasiriyah oilfield was utilised to characterise the Mishrif formation and construct a 3D static model. This model illustrates the spatial distribution of petrophysical properties and calculates the Original Oil in Place volume (OOIP) using a volumetric approach.

   The model incorporates water saturation, effective porosity, permeability, and a 2D structural, which is discretized by 317130 grids. These petrophysical properties are populated in 3D dimensions using the geostatistical method SGS. At the same time, the difference in depths of OWC is captu

   The present study is conducted to investigate the adsorption desulfurization process for eliminating sulfur from a simulated fuel within a sulfur content range similar to what exists in typical naphtha streams. The model oil, n-hexane, was sulfurized with dibenzothiophene (DBT), which is the most complex form of sulfur constituents in fuels. Corncob, a natural biomass waste material, was utilized to accomplish the adsorption remedy of sulfur.

   The carbonization process took place at 500 °C. FTIR, SEM, XRD, AFM, and BET-surface area facilitated a comprehensive characterization of carbonized corncob (CC) adsorbent. The results showed that the corncob sample has homogeneous surfaces and relatively analogou

   Theobromine, theophylline, and caffeine retention times in a C₁₈ HPLC column (stationary phase) were investigated as a function of mobile phase flow rate, mobile phase composition, and column temperature. When the mobile phase flow rate increased from 0.1 to 1 mL/min and the methanol concentration increased from 5 to 30%, the retention time and peak width of these three compounds were found to be reduced. While there was a small influence of increasing the mobile phase flow rate on the resolution, decreasing the methanol concentration in the mobile phase considerably reduced the resolution. In addition, the mobile phase flow rate and composition were determined to have a more significant impact than the column temperature

   Development of a mature oil reservoir blocks strategy in optimizing hydrocarbon production from mature oil fields. Using dynamic modeling techniques together with subsurface interpretations that were based on sharply adjacent well data, the study has presented new development well placements. Production data studies, pressure surveys, and detailed subsurface studies will be integrated to improve the understanding of the reservoir behavior to predict reservoir performance. The key findings indicate high increments in oil production on account of the implementation of new development wells. The current research provides not only empirical evidence supporting the efficacy of strategic drilling but also lends a structured workflow appli

   Given the significant differences in gas accumulation modes, coal reservoir characteristics, and gas preservation conditions for ultra-deep coalbed methane (vertical depth > 3000 m, measured depth > 5000 m), their production characteristics, flowback patterns, and flow phase classifications also vary greatly. Additionally, there are limitations in the production technologies applicable to deep reservoirs. To explore the relationship between the production characteristics of deep coalbed methane and medium-shallow coalbed methane, as well as to investigate suitable technologies for deep coalbed methane, this paper uses Well Q1 as an example and conducts research and analysis based on reservoir engineering theory. It is believed

   Carbon dioxide geological storage gives tremendous promise for mitigating anthropogenic carbon emissions. CO₂ hydrate has been given rising attention due to its potential in carbon geo-sequestration projects. The effect of silica nanoparticles (SiNPs) on the kinetics of CO₂ hydrate formation was systematically studied at 3.5 MPa and 280 K. Pure (bare) and surface-modified (hybrid) SiNPs were separately characterized and used in this study. The effect of bare and hybrid SiNPs concentrations on the induction time of CO₂ hydrate formation was investigated. A high-pressure, high-temperature stainless steel vessel was used as a hydrate reactor, and pressure-temperature data were continuously recorded to f

The current research aims to identify the role of awareness media campaigns in spreading health awareness and sports culture among students of the College of Sports Sciences and Physical Activity, King Saud University, Saudi Arabia.The researchers used the analytical approach with its steps and procedures through the analysis of previous studies and reference research related to the field of research in order to achieve the objectives of the research. The electronic questionnaire was used. The researchers randomly selected the research sample, which consisted of (503) female students.One of the most important results was that the awareness media campaigns emphasized the nation’s interest in women’s health in general and university st

This study aimed to investigate the effect of Gyro tonic exercises on developing specific strength (speed-strength and strength endurance) and performance achievement in young rowers over a 2000-meter distance. An experimental approach was adopted, applying an 8-week training program to a sample of 8 rowers from the training center in Al-Karkh. The program included Gyro tonic exercises and core stability training to enhance the players' physical and skill performance. The results revealed statistically significant differences between pre- and post-tests in all studied variables, indicating that Gyro tonic training significantly improved muscular strength and performance achievement. The researcher attributes this improvement to the contr

   The development of new, cleaner technologies is presently receiving a lot of attention to capture pollutant CO₂ gas. 13X zeolite is one of the most popular adsorbents employed for this purpose. Batch and continuous fluidized beds were used to examine the adsorption capacity. Isothermal and kinetic models for the batch were determined at 1–5 bar and 298 K and 303 K pressure range and temperatures, respectively. The Langmuir model fitted the process with q_m = 4.01 mmol/g and a correlation R² = 0.986. Pseudo-first order was also fitted with a correlation of R² = 0.997. The impact of the inlet CO₂ concentration (5%, 10%, and 14%), the bed heights varied between (5, 15, 25) cm, wit

Researchers and specialists in the fields of educational sciences strive to enhance the academic level of their students. Among the most prominent of these sciences is sports science, which encompasses various specializations, curricula, and theories. This has driven professionals in this field to constantly seek the most effective, shortest, and simplest ways to achieve high-quality outcomes through experimentation and practical application. The aim of this research was to develop specialized exercises based on mechanical principles for diagonal attacks from positions (2) and (4) among third-year volleyball students. The study also aimed to determine whether these exercises are more effective than conventional training in influencing th

     An approach to increase the efficiency of the poultry industry is to supplement the feed additives in diets to enhance growth rates, optimize egg production, mitigate disease prevalence, and improve feed utilization. Primary constituents of poultry diets incorporate cereal grains, predominantly corn, along with wheat, barley, sorghum, and other grains. Additionally, a predominant protein source e.g. soybean meal is utilized, although alternative protein sources, both of animal and plant origin, exist. Beyond these components, the feed nutritional quality is influenced by factors such as presentation, microbial contamination, the presence of antinutritional substances, digestibility, palatability, and intestinal

Background: Dental casts come into direct contact with impression materials and other items that are contaminated by saliva and blood from a patient's mouth, leaving the casts susceptible to cross-contamination. The disinfectant solutions of the impression materials cause various adverse reactions. Therefore, disinfection of dental casts may be effective in preventing cross infection. This study was carried out to evaluate the surface hardness, dimensional accuracy, reproduction of details and surface porosity of type III, type IV and type IV extra hard dental stone after immersion in and spray by using SOLO and Sodium hypochlorite disinfectant solutions. Materials and methods: 240 Stone samples were prepared in rubber rings, A total of 60

Background: Denture lining materials are widely used in prosthodontic treatment and management of traumatized oral mucosa. A contaminated prosthesis can provide a source of cross-contamination between patients and dental personnel as well as a cause for denture stomatitis. Therefore, denture disinfection has been recommended as an essential procedure for maintenance of a healthy oral mucosa. This study investigated the effect of SOLO disinfectant solution on some properties of different denture lining materials. Materials and methods: Three different solutions were used in this study; SOLO disinfectant solution, sodium hypochlorite solution, and water on three types of acrylic denture lining materials; hot cure, cold cure, and soft acrylic

Background: Prosthodontists estimated the parallelism of the occlusal plane to different anatomical landmarks, which was somewhat arbitrary and depended mainly on their vision. The aim of this research was to assess the degree of accuracy of prosthodontists in determining the parallelism of two lines. This research was aimed to assess which technique would be more accurate for the prosthodontist to distinguish parallelism; the comparison of the occlusal plane with the interpupillary line or with the inferior border of the earlobes. Materials and methods: Twenty eight prosthodontic specialists were included in this research. Illustrations of two lines with different tilts were presented to the participants to distinguish whether parallel or

Background: tooth debonding was one of the major reasons for denture repair. With the use of recently introduced thermoplastic denture base materials the problem of tooth debonding increased due to the nature of the bond between these materials and the acrylic teeth. This study was aimed to assess the bond of the acrylic teeth to conventional heat cure acrylic resin and to thermoplastic resin denture base material and methods to enhance it. Materials and methods: acrylic resin teeth were bonded to heat cure acrylic resin with and without wetting the ridge laps of the teeth with monomer and acrylic teeth with prefabricated retentive holes, unmodified and modified, in their ridge laps were processed with Valplast thermoplastic resin denture b

Background: Complete denture wearers show lower levels of bite force than dentate subjects. This has a significant influence on their chewing efficiency. In this study an attempt was made to investigate the effect of the impression technique on the maximum bite force in complete denture wearers. Materials and methods: The patients selected for this research were 12 edentulous patients. Three different techniques for registering the final impression were made; the mucostatic, mucofunctional, and the selective pressure impression technique. Two sets of upper and lower denture bases and one set of upper and lower dentures were constructed for each subject. Intraoral and extraoral instruments and devices, as well as a computer program were used

This study aimed to investigate a new evaporation technique of essential oils; EOs (oregano, Lemongrass and bergamot essential oils) are in product called Fumite^®Aroma. The study included 3 immunological parameters namely immunoglobulin A (IgA), interferon gamma (INF-γ), and newcastle disease (ND) antibody titer (Ab) as well as to compare between aerosol and ocular routes for ND vaccine. The study was designed as follow : {G1: is positive control given EOs(6g) only; G2: given Eos (6g) with ND vaccine by aerosol route; G3: given EOs (6g) with ND vaccine by ocular route; G4: given ND vaccine by aerosol route only; G5: given ND vaccine by ocular route only; G6: is negative control with no evaporation or vaccination}. Le

Barley is the second cereal crop grown after wheat in the Kurdistan region of Iraq. Low rainfall and high-temperature impact barley yields. A study investigating an F₃ population of 100 segregated lines derived from a cross between Clipper, an Australian cultivar known for its high yield, and Local black, a cultivar recognized for its stress tolerance. The segregated F₃ lines were assessed under two different environmental conditions at the Grdarash research station in Erbil and the Qlyasan research station in Sulaimani. The field trial data for the F₃ population experienced analysis of variance and normality tests. Direct selection of high-yielding genotypes is challenging due to the complexity o

Since phosphorus (P) is lower in agricultural areas with acid sandy soil, it runs out in different parts of crop plants after harvesting. To boost growth and development in the next cropping system, only overuse of inorganic phosphate fertilizers can adversely affect agricultural sustainability. Phosphate-solubilizing fungi like Candida tropicalis play a role in plant P nutrition through soil P dynamics and growth hormones. Three PSF isolates (Sw01, Pu02, and Pu04) from bulk soil of fresh corn were tested for optimal media and incubation times. The results showed that Sw01 produced the highest population of 593.33×10⁸CFU L⁻¹ when cultured<

This study aimed to estimate variability and some genetic parameters for yield and yield components in pea (Pisum sativum L.) genotypes under different phosphorous levels. A field experiment was carried out at the field of Horticulture Department, College of Agricultural Engineering Sciences, Duhok University, on the 1^st of November 2021. the experiment unites layout according to split-plot arrangement, the main plots include phosphorus levels (0, 18, 36, and 54 kg ha^-1 P₂O₅ and the subplot represented the thirteen genotypes within RCBD. The results exhibited that phosphorus levels were highly significant for all traits except biological yield, also the genotyp

This research aims to determine the effects and limitations of using B. purpurea in complete feed on the performance of male Kacang goats. The study involved sixteen male Kacang goats aged 10-12 months with a weight range of 12-14 kg. The research method employed a Completely Randomized Design with four treatments and four replications, consisting of T0: G. sepium 30% + Natural grass 38% + Rice bran 7% + Milled corn 24,8% + Mineral mix 0,2% (control); T1: G. sepium 30% + Natural grass 38% + Rice bran 6,5% + Milled corn 22,8% + Mineral mix 0,2% + B.