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582 articles for “Concentration”
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Effect of Different Incubation Times on the Effectiveness of Oyster Mushrooms Towards the Growth of Some Fungal Isolates
Abstract: The study was conducted by preparing the filtrate of the oyster mushroom Pleurotus ostreatus, where the effectiveness of the fungal filtrate prepared from growing the fungus in the liquid Potato Dextrose Broth (PDB) medium was selected for two different periods (14, 28 days) in inhibiting some types of fungi (Aspergillus Spp : Aspergillus niger ،Aspergillus flavus, Aspergillus terreus) and some types of fungi (Candida Spp: Candida albicans, Candida tropicalis, Candida …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 15, Issue 2, 2025 · pp. 1–8 Read article
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The Reaction About Anti-Hypertensive Drugs According to Plasma Renin-Aldosterone States
Abstract: With recent studies, hypertension has not only a simple pathophysiology, thus it can classify details more about and establishing drug therapy strategies compatible with it is a very important method to improve the organ predictive of patients. The purpose of this study is to compare the responsibility of some anti-hypertensive drugs in hypertensive patients according to plasma renin-aldosterone levels, which becomes the background factor of hypertension. We investigated 71 hypertensive …
Published in Research and Reviews: A Journal of Pharmacology · Vol. 15, Issue 2, 2025 · pp. 14–23 Read article
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Study of the response of Fenugreek Seedlings (Trigonella foenum-graecum L.) to some Plant Growth Regulators and Their effect on the production of the active Compound (Trigonelline)
Abstract: The experiment was conducted during the 2022–2023 academic year in the laboratories of the Department of Biology, Faculty of Education for Girls, University of Kufa, to investigate the effects of varying concentrations of gibberellic acid (GA₃) — specifically 0, 2, and 3 ppm — and salicylic acid (SA) (0, 2.5, 5 ppm) as well as the interaction between them on the germination percentage and some growth traits of fenugreek seedlings …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 15, Issue 2, 2025 Read article
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Effect of Salinity and Spraying of Spirulina sp. Extract on some Morphological and Physiological Characteristics of Anise (Pimpinella anisum L.)
Abstract: The experiment was conducted during the academic year (2023-2024) in the Al-Ghammas area, affiliated with Al-Shamiya District / Diwaniyah Governorate, with the aim of studying the effect of salinity of irrigation water and spraying Spirulina plantensis algae extract on some phenotypic and physiological growth characteristics of the anise plant Pimpinella anisum. Which were measured in the laboratories of the Department of biology/ College of Education for women - University of …
Published in Research & Reviews : Journal of Botany · Vol. 14, Issue 3, 2025 · pp. 1–7 Read article
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Machine Learning Approach to Predict the Performability and Emissions of Diesel Engine Fueled with Doped Biodiesel Blend
Abstract: Enhancing the performability and emission characteristics of diesel engines has been a difficult task in light of growing concerns about global warming and other negative effects, as diesel accounts for 70% of global energy demand. In this study, engine performance and exhaust emissions for various fuel blends were thoroughly evaluated using machine learning techniques to predict engine emission and performance behavior. We focused on biodiesel blend and nanoparticle additive concentration …
Published in International Journal of Mechanical Dynamics and Systems Analysis · Vol. 3, Issue 1, 2025 · pp. 1–12 Read article
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Thermal Conductivity and Energy Storage Performance of Paraffin Wax-Based Composites Reinforced with Amine Functionalized Graphene as a Nanofiller
Abstract: In this study, amine-functionalized graphene (AFG) was employed as a nanofiller/nanomaterial to enhance the thermal and structural properties of a paraffin wax (PW)-based polymeric composite, formulated as a phase change material (PCM). The PW/AFG composite was synthesized with varying nanofiller volume fractions (0.20%, 0.40%, 0.80%, and 1.60%), and its thermal conductivity, stability, and energy storage performance were systematically analyzed. The incorporation of AFG into the polymer matrix significantly improved the …
Published in Journal of Polymer & Composites · Vol. 13, Issue 5, 2025 · pp. 355–374 Read article
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Coupled Magneto–Thermal–Diffusion Transport in an Unsteady Maxwell Polymer Fluid with Activation Energy over a Porous Stretching Surface
Abstract: The present study investigates the combined effects of activation energy and diffusion-thermo (Dufour) processes on unsteady magnetohydrodynamic (MHD) flow, heat, and mass transfer of a Maxwell viscoelastic fluid past a porous exponentially stretching vertical sheet. The electrically conducting and incompressible polymeric fluid flows through a saturated porous medium under a transverse magnetic field. The governing momentum, energy, and concentration equations are transformed into nonlinear ordinary differential equations using similarity transformations …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 581–590 Read article
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Biophysical Properties and Spin Transport in Hemoglobin, Heme Along the Easy Magnetic Fe-N Symmetric Axis
Abstract: Many physical processes that take place in human and animal hemoglobin are associated with a transport of minerals, air, charge carriers, ions, and spin. They are greatly influenced by external electric and magnetic fields, the concentration of mineral intake, pH value, thermal conditions, and the structure of hemoglobin. In this research, emphasis is given to spin transport in hemoglobin, where a weak spin transport is noticed. In order to clarify …
Published in Research & Reviews : Journal of Physics · Vol. 14, Issue 3, 2025 · pp. 45–62 Read article
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Experimental Investigation on Heat Transfer Enhancement in Shell and Tube Heat Exchanger Using Graphene Nanofluids
Abstract: The paper focuses on the dispersion of Graphene nanoparticles in a water–ethylene glycol based fluid to investigate their impact on the convective heat transfer performance of the resulting nanofluid. Various concentrations of graphene nanoparticles were prepared, and the nanofluids were subjected to different ultrasonication durations to ensure proper dispersion and stability of the nanoparticles within the base fluid. The study involved extensive experimental evaluation to systematically analyze how the nanoparticle …
Published in Journal of Automobile Engineering and Applications · Vol. 12, Issue 3, 2025 · pp. 32–38 Read article
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Effect of Toxoplasma gondii on some Neurotransmitter Levels in Patients with Toxoplasmosis Infection
Abstract: Background: The study of Toxoplasma gondii on some neurotransmitter levels in patients with toxoplasmosis infection is one of the challenges of sustainable development. Toxoplasma gondii is a parasite that can alter host behavior by affecting neurotransmitters of the host. Aim: To diagnose if there are differences in neurotransmitter levels in infected people by toxoplasmosis and healthy people to predict the psychological and neurological diseases. Methods: The study included collecting 60 …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 16, Issue 1, 2026 · pp. 1–8 Read article
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Optimization of Sustainable Electrochemical Machining Parameters for Polymer based Materials Using AHP Integrated TOPSIS Method
Abstract: The current paper describes the use of the AHP-TOPSIS method to optimize process parameters in sustainable electrochemical machining of polymer composites. Combine lightweight polymer matrices with reinforcing particles or fibers such as TiB₂, SiC, or Al₂O₃, offering high strength-to-weight ratio, corrosion resistance, and design flexibility, making them ideal for aerospace and automotive applications. Non-conductive and heterogeneous nature poses challenges during electrochemical machining, as it affects current distribution and material removal …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1048–1059 Read article
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Allelopathic Effect of Lantana camara L. on Moong Germination
Abstract: Allelopathy is a biological process where plants inhibit the growth and germination of surrounding species. This study examined the allelopathic effects of Lantana camara L. leaf extracts using concentrations of 25%, 50%, 75%, and 100% on Vigna radiata L., compared to a control group. Results showed that L. camara L. extracts significantly inhibited both growth and germination of Vigna radiata L., with increasing effects at higher concentrations. On the 10th …
Published in Research & Reviews : Journal of Botany · Vol. 15, Issue 1, 2026 · pp. 36–41 Read article
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Fabrication of Polydimethylsiloxane Composites with Nickel Nanoparticles: Unification and Current–Voltage Relationship
Abstract: Polydimethylsiloxane (PDMS)–nickel nanoparticle (NiNPs) nanocomposite films were fabricated and systematically investigated to understand their electrical transport behavior through current–voltage (I–V) characterization. Nanocomposite films with varying Ni nanoparticle filler concentrations (14.88 wt%, 15.77 wt%, and 16.65 wt%) were prepared using a solution-mixing and spin-coating technique, followed by controlled thermal curing. The electrical properties of both pristine PDMS and PDMS– NiNPs nanocomposites were examined over a wide voltage range (up to 800 …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 16, Issue 1, 2026 · pp. 22–29 Read article
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Mechanical Performance Evaluation of Brachyuran Shell Particle-Infused S-Glass Fibre Epoxy Polymer Composites
Abstract: Epoxy composites bio-filled with brachyuran crab shell powder and reinforced with S-glass fibres at different loadings (2%, 4%, and 6%) are tested for their mechanical properties in this work. Using modest amounts of filler significantly improved hardness, ultimate tensile strength, and flexural strength in the empirical data. The largest increase in hardness was 64.42% at 4% filler, up from 26.22% at 2%; however, there was a dramatic decrease to 13.11% …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 500–507 Read article
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Compatative Catalytic Study of Oxidation of Thiourea by Chromium (VI) in Presence of Different Catalysts and Micelles
Abstract: The series of catalysts like acetate, oxalate, EDTA, the varies micelles viz, CTAB, SDS, TRITON X-100 was carried out in the kinetic study of oxidation of Thiourea by Cr(VI) as an oxidant in water medium. The effect of catalytic efficiency has been study for varies catalyst and micelles by volumetric method and UV spectroscopic methods. The product was confirmed by IR studies. UV study reveals shows that higher catalytic efficiency …
Published in International Journal of Advance in Molecular Engineering · Vol. 4, Issue 1, 2026 · pp. 9–21 Read article
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The Integrity of Bio-Stimulant Efficiency of Mint Leaf (Mentha Piperita) on Crude Oil Remediation in Soil Environment
Abstract: This research addresses the integrity of biostimulant efficiency of mint leaf (Mentha piperita) on crude oil remediation in soil environments. The soil environment consideration in this investigation is loamy and some soil properties were examined; obtained data revealed a nitrogen value of 5.82%, phosphorus value of 46.91mg/kg, potassium value of 417.51mg/kg, and hydrogen-utilizing bacteria (HUB) value of 13.19cfu/g for unpolluted loamy soil, whereas polluted soil with crude oil data are …
Published in International Journal of Pollution: Prevention & Control · Vol. 4, Issue 1, 2026 · pp. 41–47 Read article
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Evaluation of Anti-cataract Potential of Carbocisteine by Using In Vitro Goat Lens Model
Abstract: This study includes Carbocisteine has four Oxygen molecules, one Sulfur molecule, and one Nitrogen molecule. Goat eyeballs were used in the present study. They were obtained from the slaughterhouse. Glucose at a concentration of 55 mM was used to induce cataracts; glucose (5.5 mM) concentration served as a normal control, and Ascorbic Acid served as a standard control. Incubation of lenses with glucose 55 mM showed opacification starting after 8 …
Published in Research and Reviews: A Journal of Pharmacology · Vol. 16, Issue 2, 2026 Read article
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Structural Performance Evaluation of Circular Perforated Plates under Mechanical Loading
Abstract: Circular perforated plates are structurally critical components in aerospace, automotive, and marine sectors, where perforation-induced stress concentrations govern failure under mechanical loading. This study conducts a systematic finite element analysis of stress distribution, deformation, and interlaminar behavior in aluminum and glass-epoxy laminates ([−45/45/90/0]S and [−45/45/90/0]AS) under uniform transverse pressure with clamped-free boundary conditions. Four perforation configurations—no hole, central hole, single-series, and 25-hole grid—were evaluated using ANSYS Shell-181, verified against Kirchhoff–Love, …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 · pp. 1–20 Read article
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Study of an Improved Quantum Particle Swarm Optimization-Based Framework for Neural Network Optimization in Modelling of Polymer Data
Abstract: The accurate forecasting of polymer viscosity at various physicochemical conditions has been quite critical due to the nonlinear interactions and interrelations between the variables. This paper suggests a better hybrid modelling framework, which involves the use of Artificial Neural Networks (ANN) and more advanced versions of Quantum Particle Swarm Optimization (QPSO) to better predict polymer viscosity. The input parameters taken are, namely, log (shear rate), polymer concentration, NaCl concentration, Ca …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 Read article
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Foliar Application of Zinc Nanoparticles Improves Photosynthetic Performance in Wheat Plants
Abstract: The present study investigated the impact of foliar spray of zinc oxide nanoparticles on physiological and biochemical reactions in wheat (Triticum aestivum L.) Foliar spray with zinc oxide nanoparticles at 10 mg/l positively increased pigment content and biomass in comparison to control while a significant reduction in chlorophyll content and biomass accumulation was observed at higher concentration of 1000 mg/l. A study of Chlorophyll a fluorescence parameters at 10 mg/l …
Published in Research and Reviews : A Journal of Biotechnology Read article