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Synergistic Effect of Nanoparticles and Polymers on the Rheological Properties of Injection Fluids: Implications for Enhanced Oil Recovery
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New nanotechnology-based approaches are increasingly being investigated for enhanced oil recovery (EOR), with a particular focus on heavy oil reservoirs. Typically, the addition of a polymer to an injection fluid advances the sweep efficiency and mobility ratio of the fluid and leads to a higher crude oil recovery rate. However, harsh reservoir conditions, including high formation salinity and temperature, can limit the performance of such polymer fluids. Recently, nanofluids, that is, dispersions of nanoparticles (NPs) in a base fluid, have been recommended as EOR fluids; however, such nanofluids are unstable, even under ambient conditions. In this work, a combination of ZrO2 NPs and the polyacrylamide (PAM) polymer (ZrO2 NPs–PAM) was used to formulate a novel nanopolymer injection solution for EOR applications to overcome the limitations of simple PAM solutions by the in situ reservoir conditions including high temperature and salinity. A series of measurements were comprehended at controlled pH values to measure the stability and rheological properties of NPs–PAM combinations at different temperatures, salinities, NP concentrations, and shear rates. It is depicted from the results that a higher salinity decreased the viscosity of the polymer formulation. However, ZrO2 NPs–PAM combinations reduced the effect of increased salinity on viscosity, which is essential for EOR applications. Furthermore, at low and medium shear rates, which are more relevant to the flow scenarios in oil reservoirs, ZrO2 NPs–PAM exhibited a higher viscosity than the PAM solution at the same pH and salinity. In contrast, at higher shear rates, the viscosity of ZrO2 NPs–PAM was less than that of the sole PAM solution. Mechanistically, an increased shear rate endorsed the adsorption of polymer molecules onto the surface of NPs, foremost to a lesser polymer concentration in the solution. Moreover, although ZrO2 nanodispersion was unstable at all NPs and salt concentrations, ZrO2 NPs–PAM was stable over an extensive range of salinities and temperatures. The results suggested that ZrO2 NPs–PAM is more suitable than the sole polymer or NP solutions for EOR projects.

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Publication Date
Sat Oct 01 2022
Journal Name
Baghdad Science Journal
Toxicity of Nanomulsion of Castor Oil on the Fourth larval stage of Culex quinquefsciatus under Laboratory Conditions
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Mosquitoes like Culex quinquefasciatus are the primary vector that transmits many causes of diseases such as filariasis, Japanese encephalitis, and West Nile virus, in many countries around the world. The development in the scientific fields, such as nanotechnology, leads to use this technique in control programs of insects including mosquitoes through the use of green synthesis of nanoemulsions based on plant products such as castor oil.  Castor oil nanoemulsion was formulated in various ratios comprising of castor oil, ethanol, tween 80, and deionized water by ultrasonication. Thermodynamic assay improved that the formula of (10 ml) of castor oil, ethanol (5ml), tween 80 (14 ml) and deionized water (71ml)   was mor

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Publication Date
Thu Jan 01 2026
Journal Name
Malaysian Journal Of Nursing
Nursing Implications in Managing Oral Health among Children: Narrative Review
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Background: Oral health is an essential component of nursing care, and the maintenance of oral health, through both pharmacological and non-pharmacological management, is widely employed in clinical practice to support effective oral care. In children, oral health plays a crucial role in overall wellbeing, and nurses are often among the first healthcare professionals to identify, address, and prevent oral health problems. Objectives: This narrative review synthesizes and analyzes the historical evolution and available evidence regarding the nursing role in managing oral health in children, with a specific focus on nurse-led practices. It explores how nurses contribute to prevention, early detection, education, and the implementation

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Publication Date
Wed Oct 28 2020
Journal Name
International Journal Of Agricultural And Statistical Sciences 16
Effect of nano-fertilizers and amino acids on the growth and yield of broccoli
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Publication Date
Wed Sep 01 2021
Journal Name
Iraqi Journal Of Physics (ijp)
Study the Effect of Graphene on the Contact Angle, Water Absorption and Thermal Stability ( TGA ,DSC) for Blend (Epoxy & Repcoat ZR)
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In this study, polymeric coating was developed by incorporating nano graphene in the polymer blend with applications to oil storage tanks. The oil storage tanks samples were brought from the oil Pipeline Company / Doura refinery in Baghdad. The coating polymer was formed with a blend (epoxy resin and repcoat ZR). The proportion of mixing the mixture was 3:1:1 epoxy resin 21.06 gm: repcoat ZR 10.53 gm: hardener 10.53 gm. The blend/graphene was prepared using in stui-polymerization method with different weight percentage 1, 3, 5, and 7 wt % added to blend. The resulting solution was put in a glass tube on a magnetic stirrer for one hour at a temperature of 40 °C. The result of contact angle and water absorption the best ratio of 3wt

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Publication Date
Fri May 05 2023
Journal Name
International Journal Of Professional Business Review
The Effect of Emotional Intelligence on Manager Performance: a Field Study in the General Authority for Irrigation and Reclamation Projects in Baghdad
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Purpose: the purpose of this study is to investigate how managers working for the General Authority for Irrigation and Reclamation Projects react to the impact of Emotional Intelligence (EI) on their performance.   Theoretical framework: The current study includes an intellectual framework on two variables, namely EI and Manager Performance (MP), because it is essential to investigate the relationship between these two variables and the impact of EI on MP.   Design/methodology/approach: The research problem is that a manager's capacity to make wise decisions about their work or interactions with subordinates is diminished when they have inadequate EI. The questionnaire is used as a tool for gathering data for the study, and the st

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Publication Date
Sun Sep 06 2009
Journal Name
Baghdad Science Journal
Biological and chemical Study to evaluate the types of water used for drinking in the Al-youssiffiyah area and its effect on public health
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Election study included four sites for the waters in area of Youssifiyah south of Baghdad (river water, tank water, liquefactions water, and water filtrate and seethed and purifier by alum and chloride), the samples were collected during the month of June in 2007. Temperature, electrical conductivity and acidity are measured. Also , the concentration of chloride , sulphate , carbonate , nitrate , sodium , calcium , magnesium , hard total and total dissolved substances are determined , as well as heavy metals assess environmental risk (such as Cu, Pb, Zn, Fe). It was also a study of bacterial totals included both total Bacteria (TB) and Total Coliform Bacteria (TC) and Fecal Coliform (FC) and Fecal Streptococci (FS). The stu

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Publication Date
Thu Aug 01 2024
Journal Name
Journal Of Education And Scientific Studies مجـلـة الدراســات التربـويــة والعلـمـيــة - كلـيــة التـربـيـة -
Tendency towards the risky sides of nanoparticles
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Many questions and opinions often surround the development of science that can support it or arouse suspicion, either for fear of future consequences or to rein force and expand knowledge. The study of nanoparticles and their effects has been the most critical area of scientific research in recent years, as their production and various applications have increased. This review highlights the multiple effects (negative and some positive) of nanoparticles on some genetic and immunological aspects, as these aspects are closely related to the health of the organism’s bodily functions. This review also focuses on nanofertilizers as an example of the outcomes of nanotechnology. Moreover, it clarifies the reasons for concerns about the use

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Publication Date
Fri Nov 03 2023
Journal Name
Iraqi Journal Of Pharmaceutical Sciences( P-issn 1683 - 3597 E-issn 2521 - 3512)
Factors affecting the preparation of Cilnidipine nanoparticles
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Cilnidipine is a dihydropyridine calcium channel blocker used to improve the neurological outcome following subarachnoid hemorrhage. It belongs to BCS class II drugs that have a low oral bioavailability of 13%, thus preparation as nanoparticles would be expected to improve bioavailability. The aim of the study is to prepare Cilnidipine as nanoparticles using different carriers and co-carriers, concentrations, and types. Cilnidipine nanoparticles were prepared by a solvent anti-solvent method using different carriers (Soluplus®, Poloxamer 188, PVA cold) with co-stabilizers (PEG200, glycerol) at different ratios. Based on the obtained results, formula N4, which included Soloplus in a 5:5:1.19 weight ratio of drug to

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Publication Date
Tue Dec 15 2015
Journal Name
Iraqi Journal Of Laser
The Optical Limiting of Prepared Palladium Nanoparticles
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Palladium nanoparticles are produced by Polyol method. The characterization of the Pd nanoparticle has been conducted by various techniques such as SEM and AFM. The results of Pd powder showed that the particle size is directly proportional to the temperature and the reaction time. The optimum conditions for obtaining minimum nanoparticles size are 45 oC reaction temperature and 60 min reaction time and the smaller particle size achieved is equal to 25 nm. The optical limiting of smaller size nanoparticles has been studied. The palladium nanoparticles appear to be attractive candidates for optical limiting applications.

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Publication Date
Sun Aug 01 2021
Journal Name
Eurasian Chemical Communications
New sensitive turbidimetric method for determination of losartan potassium in pharmaceutical formulations using flow injection combined with homemade turbidimeter
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