scholarly journals Entropy Analysis on the Blood Flow through Anisotropically Tapered Arteries Filled with Magnetic Zinc-Oxide (ZnO) Nanoparticles

Entropy ◽  
2020 ◽  
Vol 22 (10) ◽  
pp. 1070 ◽  
Author(s):  
Lijun Zhang ◽  
Muhammad Mubashir Bhatti ◽  
Marin Marin ◽  
Khaled S. Mekheimer
Keyword(s):  
Blood Flow ◽  
Zinc Oxide ◽  
Temperature Profile ◽  
Zno Nanoparticles ◽  
Living Environment ◽  
Biomedical Science ◽  
Entropy Analysis ◽  
Zno Nps ◽  
Antidiabetic Treatment ◽  
Flow Through

The present analysis deals with the entropy analysis of the blood flow through an anisotropically tapered arteries under the suspension of magnetic Zinc-oxide (ZnO) nanoparticles (NPs). The Jeffrey fluid model is contemplated as blood that is electrically conducting and incompressible. The lubrication approach is used for the mathematical modeling. The second law of thermodynamics is used to examine the entropy generation. The exact solutions are obtained against velocity and temperature profile with the use of computational software. The results for Entropy, Velocity, Bejan number, temperature profile, and impedance profile are discussed by plotting the graphs. ZnO-NPs have promising applications in biomedical engineering due to its low toxicity, economically reliable, and excellent biocompatibility. ZnO-NPs also emerged in medicine i.e., antibacterial and anticancer activity, and also beneficial in antidiabetic treatment. The monitoring of the blood temperature in the case of the tapered artery has supreme importance in controlling the temperature of blood in the living environment. The presence of a magnetic field is advantageous to manage and control the blood motion at different temperatures. The present outcomes are enriched to give valuable information for the research scientists in the field biomedical science, who are looking to examine the blood flow with stenosis conditions and also beneficial in treating multiple diseases.

Microbiote shift in sequencing batch reactors in response to antimicrobial ZnO nanoparticles

RSC Advances ◽  
2016 ◽  
Vol 6 (111) ◽  
pp. 110108-110111 ◽  
Author(s):  
Zhenghui Liu ◽  
Huifang Zhou ◽  
Jiefeng Liu ◽  
Xudong Yin ◽  
Yufeng Mao ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Wastewater Treatment ◽  
Adverse Effects ◽  
Zno Nanoparticles ◽  
Zinc Oxide Nanoparticles ◽  
Wastewater Treatment Plants ◽  
Oxide Nanoparticles ◽  
Batch Reactors ◽  
Sequencing Batch Reactors ◽  
Zno Nps

Zinc oxide nanoparticles (ZnO NPs) have been monitored in wastewater treatment plants as their potential adverse effects on functional microorganisms have been causing increasing concern.

Microwave Synthesis of ZnO Nanoparticles for Enhanced Oil Recovery

2014 ◽  
Vol 1024 ◽  
pp. 83-86 ◽  
Author(s):  
Mohamad Sahban Alnarabiji ◽  
Noorhana Yahya ◽  
Sharifa Bee Abd Hamid ◽  
Khairun Azizi Azizli ◽  
Afza Shafie ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Zno Nanoparticles ◽  
Sol Gel ◽  
Zinc Nitrate ◽  
Nitrate Hexahydrate ◽  
Zno Nps ◽  
Nanoparticle Morphology ◽  
Original Oil In Place

Synthesising zinc oxide nanoparticles to get certain specific characteristics to be applied in Enhanced oil recovery (EOR) is still challenging to date. In this work, zinc oxide (ZnO) nanoparticles were synthesised using the sol-gel method by dissolving zinc nitrate hexahydrate in nitric acid. The ZnO crystal and particles morphology and structure were determined using X-ray Diffractometer (XRD) and Field Emission Scanning Electron Microscope (FESEM). In this study, a microwave oven was used for annealing ZnO without insulating a sample in any casket. The results show that 30 and 40 minutes of annealing and stirring for 1 hour influenced the morphology and size of zinc oxide particles in nanoscale. These parameters could be tailored to generate a range of nanoparticle morphology (agglomerated nanoparticles in a corn-like morphology), a crystal size with the mean size of 70.5 and 74.9 nm and a main growth at the peak [10. EOR experiment were conducted by dispersing 0.10 wt% ZnO NPs in distilled water to form a ZnO nanofluid. Then the fluid was injected into the medium in the 3rd stage of the oil recovery to present EOR stage. It was found that ZnO nanofluid has the ability to extract 8% of the original oil in place (OOIP).

scholarly journals Insecticidal Effect of Zinc Oxide Nanoparticles against Spodoptera frugiperda under Laboratory Conditions

Insects ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1017
Author(s):  
Sarayut Pittarate ◽  
Julius Rajula ◽  
Afroja Rahman ◽  
Perumal Vivekanandhan ◽  
Malee Thungrabeab ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Life Cycle ◽  
Pest Management ◽  
Zno Nanoparticles ◽  
Spodoptera Frugiperda ◽  
Adult Emergence ◽  
Zno Nps ◽  
Alternative Source ◽  
Laboratory Conditions ◽  
Significant Difference

Fall armyworm Spodoptera frugiperda is a major pest of corn, rice, and sorghum among other crops usually controlled using synthetic or biological insecticides. Currently, the new invention of nanotechnology is taking root in the agricultural industry as an alternative source of pest management that is target-specific, safe, and efficient. This study sought to determine the efficacy of commercial Zinc Oxide (ZnO) nanoparticles (NPs) towards S. frugiperda under laboratory conditions. ZnO NPs were diluted into different concentrations (100–500 ppm), where the baby corn used to feed the S. frugiperda larvae was dipped. The development of the insect feeding on food dipped in ZnO solution was significantly (p < 0.05) affected, and the number of days that the insect took to complete its life cycle had a significant difference compared to the control. There was a significant difference in the adults’ emergence in all the concentrations of ZnO NPs compared to the control, with over 90% of the eggs successfully going through the life cycle until adult emergence. Additionally, several body malformations were observed throughout the lifecycle of the insect. Also, the fecundity of the females was greatly affected. The findings of this study suggest the possibility of exploitation of ZnO nanoparticles not only to manage S. frugiperda but to significantly reduce their population in the ecosystem through body deformations, reduced fecundity, reduced oviposition, and hatchability of eggs. It will be a valuable tool in integrated pest management regimens.

scholarly journals Insecticidal Effect of Zinc Oxide Nanoparticles against Spodoptera frugiperda under laboratory conditions in Chiang Mai, Thailand

2021 ◽  
Author(s):  
Sarayut Pittarate ◽  
Julius Rajula ◽  
Afroja Rahman ◽  
Perumal Vivekanandhan ◽  
Malee Thungrabeab ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Pest Management ◽  
Zno Nanoparticles ◽  
Spodoptera Frugiperda ◽  
Fall Armyworm ◽  
Adult Emergence ◽  
Zno Nps ◽  
Alternative Source ◽  
Insecticidal Effect ◽  
Significant Difference

Fall armyworm Spodoptera frugiperda (J.E. Smith, 1797) is a major pest of corn, rice, and sorghum among other crops usually controlled using synthetic or biological insecticides. Currently, the new invention of nanotechnology is taking root in the agricultural industry as an alternative source of pest management that is target-specific, safe, and efficient. This study sought to determine the efficacy of commercial Zinc Oxide (ZnO) nanoparticles (NPs) towards S. frugiperda under labora-tory conditions. ZnO NPs were diluted into different concentrations (100- 500ppm), where the baby corn used to feed the S. frugiperda larvae was dipped. The development of the insect feeding on food dipped in ZnO solution was significantly (p&lt;0.05) affected, and the number of days that the insect took to complete its life cycle had a significant difference compared to the control. There was a significant difference in the adults&rsquo; emergence at all the concentrations of ZnO NPs compared to the control, with over 90% of the eggs successfully going through the cycle until adult emergence. Additionally, several malformations were observed throughout the lifecycle of the insect. Also, the fecundity of the females was greatly affected. The findings of this study suggest the possibility of exploitation of ZnO nanoparticles not only to eradicate S. frugiperda but to significantly reduce their population in the ecosystem through deformations, reduced fecundity, reduced oviposition, and hatchability of eggs. It will be a valuable tool in integrated pest management regimens.

scholarly journals Effective Antiplasmodial and Cytotoxic Activities of Synthesized Zinc Oxide Nanoparticles Using Rhazya stricta Leaf Extract

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Sanodia Najoom ◽  
Fozia Fozia ◽  
Ijaz Ahmad ◽  
Abdul Wahab ◽  
Nisar Ahmad ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Ir Spectra ◽  
Zno Nanoparticles ◽  
Leaf Extract ◽  
In Vivo Studies ◽  
Cytotoxic Activities ◽  
Zno Nps ◽  
Sem Images ◽  
Rhazya Stricta ◽  
Ft Ir

In the present study, zinc oxide (ZnO) nanoparticles were prepared using ZnCl2.2H2O as a precursor, via green route using leaf extract of Rhazya stricta as capping and reducing agent. The prepared ZnO nanoparticles were examined using UV-visible spectrophotometer (UV-Vis), Fourier transform infrared spectrometer (FT-IR), X-ray diffraction spectrometer (XRD), and scanning electron microscope (SEM). The UV-Vis absorption spectrum at 355 nm showed an absorption peak, which indicates the formation of ZnO NPs. The FT-IR spectra analysis was performed to identify the potential biomolecule of the as-prepared ZnO NPs. The FT-IR spectra showed peaks at 3455, 1438, 883, and 671 cm−1 in the region of 4000–500 cm−1, which indicates –OH, NH, C-H, and M-O groups, respectively. The SEM images showed aggregation of ZnO nanoparticles with an average size of 70–90 nm. The XRD study indicated that the ZnO NPs were crystalline in nature with hexagonal wurtzite structure and broad peaks were observed at 2 theta positions 31.8°, 34.44°, 36.29°, 47.57°, 56.61°, 67.96°, and 69.07°. The synthesized ZnO NPs were found to be good antiplasmodial with a 50% inhibitory concentration (IC50) value of 3.41 μg/mL. It is concluded from the current study that the ZnO NPs exhibited noble antiplasmodial activity, and for the improvement of antiplasmodial medications, it might be used after further in vivo studies.

scholarly journals Biogenic Synthesis of Zinc Oxide (ZnO) Nanoparticles Using a Fungus (Aspargillus niger) and Their Characterization

2019 ◽  
Vol 11 (2) ◽  
pp. 119 ◽  
Author(s):  
Aisha Shamim ◽  
Tariq Mahmood ◽  
Monis Bin Abid
Keyword(s):  
Zinc Oxide ◽  
Zno Nanoparticles ◽  
Metallic Nanoparticles ◽  
Physical Method ◽  
Biological Synthesis ◽  
Zno Nps ◽  
Biogenic Synthesis ◽  
Time Saving ◽  
X Ray ◽  
Stabilizing Agents

Nanoparticles are ultrafine structures with dimensions less than 100 nm. Nanoparticles have diverse applications. There are three important methods of fabrication of nanoparticles namely physical, chemical and biological methods. Physical method is a top down strategy for the fabrication of nanoparticles. It is energy intensive and time consuming. A chemical method is simple, but is expensive and requires expensive chemicals with high purity and also involves hazards of contaminations. Biological synthesis is very simple, cheap and environment friendly, requiring no expensive chemicals, temperature and is time saving. Plants and microorganisms are commonly used in this method. These are available everywhere. In the present work we synthesized Zinc Oxide (ZnO) nanoparticles by biological method using Aspargillus niger and zinc chloride (ZnCl2) as precursors. Biogenic synthesis of metallic nanoparticles by fungi is a safe and economical process because of formation of stable and small sized nanoparticles. Fungal biomass secretes proteins which act as reducing and stabilizing agents. The synthesized nanoparticles were characterized by XRD (X-Ray Diffraction), SEM (Scanning Electron Microscopy), UV-Vis (Ultraviolet, Visible) and EDX (Energy Dispersive X-Ray) techniques. Their size was in nm range and morphology of synthesized ZnO NPs was hexagonal. The ZnO nanoparticles are one of the most versatile materials and are used in cosmetics and in Bioenergy production, as a catalyst and as antibacterial material.

Electrochemical properties of green synthesised Zinc oxide (ZnO) Nanoparticles

MRS Advances ◽  
2020 ◽  
Vol 5 (21-22) ◽  
pp. 1103-1112
Author(s):  
G.G. Welegergs ◽  
H.G. Gebretinsae ◽  
R. Akoba ◽  
N. Matinsie ◽  
Z. Y. Nuru ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Electrochemical Properties ◽  
Zno Nanoparticles ◽  
Zinc Oxide Nanoparticles ◽  
Papaver Somniferum ◽  
Toxic Chemicals ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
Bode Plot ◽  
Green Approach

AbstractBio-reduction agents are being explored to synthesised nanoparticles to minimize the effects of toxic chemicals. The present study was focused on green approach for the synthesis of zinc oxide nanoparticles using aqueous seeds extract of Papaver somniferum. The biosynthesised ZnO NPs (27.8nm) were characterized by using of spectroscopy and microscopy instruments. The surface morphology and the structural analysis confirms the formation of hexagonal nanostructure and a pure zincite nature of ZnO nanoparticles (NPs) respectively. The EDS spectrum confirms pure ZnO NPs were synthesised. From electrochemical properties, the CV indicates both anodic and cathodic sweep are quasi-reversible properties whose intensity increases with the scan rates. The bode plot shows the maximum angles of 74o which is an indication of a higher conductivity of ZnO NPs.

Study of the toxicity of ZnO nanoparticles to Chlorella sorokiniana under the influence of phosphate: spectroscopic quantification, photosynthetic efficiency and gene expression analysis

2020 ◽  
Vol 7 (5) ◽  
pp. 1431-1443
Author(s):  
Hong Zhang ◽  
Zhu Chen ◽  
Qing Huang
Keyword(s):  
Gene Expression ◽  
Zinc Oxide ◽  
Zno Nanoparticles ◽  
Aquatic Environment ◽  
Zinc Oxide Nanoparticles ◽  
Photosynthetic Efficiency ◽  
Gene Expression Analysis ◽  
Chlorella Sorokiniana ◽  
Oxide Nanoparticles ◽  
Zno Nps

Zinc oxide nanoparticles (ZnO NPs) are one of the most abundantly applied nanomaterials in nanotechnology-based industries, and recent research continues to highlight their transformations and potential eco-toxicity especially to aquatic environment.

Green Route for the Fabrication of ZnO Nanoparticles and Potential Functionalization with Chitosan Using Cross-linkers: A Review

2021 ◽  
Vol 3 (1) ◽  
pp. 1-25
Author(s):  
Hemra Hamrayev ◽  
Kamyar Shameli ◽  
Mostafa Yusefi ◽  
Serdar Korpayev
Keyword(s):  
Zinc Oxide ◽  
Metal Oxide ◽  
Green Synthesis ◽  
Zno Nanoparticles ◽  
Metal Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Synthesis Methods ◽  
Zno Nps ◽  
Biological Sources ◽  
Physical And Chemical

Zinc oxide is of significant importance for many industries due to its versatile properties, which have been enhanced with the production of this material in the nanoscale. Recent interest in the preparation of metal oxide nanoparticles using biological approaches has been reported in the literature. This technique known as “green synthesis” is an environmentally benign process than conventional methods like physical and chemical synthesis methods. Zinc oxide nanoparticles (ZnO-NPs) have been successfully obtained by green synthesis using different biological substrates like chitosan. Chitosan is biocompatible, biodegradable polymer having exclusive physical and chemical properties. Chitosan/metal oxide nanocomposite is a promising nanomaterial with enhanced properties for multiple functionalities. Therefore, this review discusses favorable approach in the formation of cross-linked Chitosan/ZnO nanocomposites attracting significant attention in various fields such biomedical due to their unique biodegradable, biocompatible, non-toxic nature. The use of biological sources, fabrication of green synthesized ZnO nanoparticles and its applications is briefly discussed. Overall, this review is a comprehensive study for the synthesis of ZnO-NPs using biological sources counting on their features and applications.

Biosynthesis and Characterization of Zinc Oxide Nanoparticles for the Systemic Treatment of Patients with Lymphoma in Nursing Care

2020 ◽  
Vol 12 (1) ◽  
pp. 137-143
Author(s):  
Lingling Meng ◽  
Lina Du ◽  
Yaqiong Shen ◽  
Shan Cong ◽  
Qiuyan Zhai ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Zno Nanoparticles ◽  
Zinc Oxide Nanoparticles ◽  
Systemic Treatment ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
Environment Friendly ◽  
Oxide Nanoparticle ◽  
T Lymphoma

Zinc oxide (ZnO) nanoparticles recently are of significant consideration because of their applications as nontoxic metal oxides. This study is mainly intended to improve a simple, efficient, and environment-friendly method for preparation of ZnO nanoparticles. This process has been developed based on plant-intervened synthesis by making use of microwave Saturejahortensis aqueous extract. We have further characterized the obtained Zinc oxide nanoparticles by using different techniques. Additionally, their cytotoxic potential was inspected via MTT assay against both B lymphoma, A20 and T lymphoma, EL4 cells lines. The zinc oxide nanoparticle exposed cells for about 24 h showed diminished cell viability in the tested cell lines where EL4 cells has been reduced to 75% of control after 24 h, whereas A20 cells were lowered to 68% of control. ZnO-NPs have proficiently hindered EL4 cell DNA synthesis at 100 μg concentration whereas completely blocked the DNA proliferation at about 50 g concentration. However, A20 cells besides presented similar propensity, thus exploring the ZnO-NPs potential to treat lymphomas.

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