Influence of Silver and Copper Nanoparticles on the Enzymatic Activity of Soil-Borne Microorganisms

Aziza M Mavjudova; Roxila N Juraeva; Javlon J Tashpulatov; Aziza M Mavjudova; Nikolay A Lazutin; Aziza M Mavjudova

doi:10.21123/bsj.2022.6532

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Publication Date

Mon Dec 05 2022

Journal Name

Baghdad Science Journal

Volume

19

Issue Number

6(Suppl.)

DOI

10.21123/bsj.2022.6532

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Influence of Silver and Copper Nanoparticles on the Enzymatic Activity of Soil-Borne Microorganisms

Copper

Enzymatic activity

Microorganisms

Nanoparticles

Silver

Aziza M Mavjudova

Roxila N Juraeva

Javlon J Tashpulatov

Aziza M Mavjudova

Nikolay A Lazutin

Aziza M Mavjudova

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Influence of metal nanoparticles synthesized by microorganisms upon soil-borne microscopic fungus Aspergillus terreus K-8 was studied. It was established that the metal nanoparticles synthesized by microorganisms affect the enzymatic activity of the studied culture. Silver nanoparticles lead to a decrease in cellulase activity and completely suppress the amylase activity of the fungus, while copper nanoparticles completely inhibit the activity of both the cellulase complex and amylase. The obtained results imply that the large-scale use of silver and copper nanoparticles may disrupt biological processes in the soil and cause change in the physiological and biochemical state of soil-borne microorganisms as well.

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Publication Date

Sun Oct 13 2019

Journal Name

Spe Kuwait Oil & Gas Show And Conference

Optimization of Fracture Parameters for Hydraulic Fractured Horizontal Well in a Heterogeneous Tight Reservoir: An Equivalent Homogeneous Modelling Approach

upstream oil & gas

equivalent homogeneous model

heterogeneous model

optimum number

hydraulic fracturing

simulation model

tight gas reservoir

saturation

model 1

optimization

Omar

Mofazzal

Asaad

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AbstractBuilding numerical reservoir simulation model with a view to model actual case requires enormous amount of data and information. Such modeling and simulation processes normally require lengthy time and different sets of field data and experimental tests that are usually very expensive. In addition, the availability, quality and accessibility of all necessary data are very limited, especially for the green field. The degree of complexities of such modelling increases significantly especially in the case of heterogeneous nature typically inherited in unconventional reservoirs. In this perspective, this study focuses on exploring the possibility of simplifying the numerical simulation pr ... Show More

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Publication Date

Thu Feb 06 2020

Journal Name

Scientific Reports

Waste foundry sand/MgFe-layered double hydroxides composite material for efficient removal of Congo red dye from aqueous solution

Dooraid N.

Laith A.

Ayad A. H.

Nadhir

Mu

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AbstractWe aimed to obtain magnesium/iron (Mg/Fe)-layered double hydroxides (LDHs) nanoparticles-immobilized on waste foundry sand-a byproduct of the metal casting industry. XRD and FT-IR tests were applied to characterize the prepared sorbent. The results revealed that a new peak reflected LDHs nanoparticles. In addition, SEM-EDS mapping confirmed that the coating process was appropriate. Sorption tests for the interaction of this sorbent with an aqueous solution contaminated with Congo red dye revealed the efficacy of this material where the maximum adsorption capacity reached approximately 9127.08 mg/g. The pseudo-first-order and pseudo-second-order kinetic models helped to describe the sorption measure ... Show More

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Publication Date

Sat Jun 01 2024

Journal Name

Case Studies In Chemical And Environmental Engineering

Optimization of photocatalytic process with SnO2 catalyst for COD reduction from petroleum refinery wastewater using a slurry bubble photoreactor

Husham M.

Khalid A.

huda

Zaidoun K.

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(3)

Publication Date

Fri Jul 12 2024

Journal Name

Biomass Conversion And Biorefinery

Chitosan-triphosphate/food grade algae/montmorillonite clay for adsorptive removal of methyl violet 2B dye removal: Behnken design optimization

Muna Sarhan

Ahlam M.

Ali H.

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(2)

Publication Date

Tue Jun 20 2023

Journal Name

Baghdad Science Journal

Insulin Like Growth Factor Binding Protein 7 as a Novel Diagnostic Marker in Sera of Iraqi Patients with Acromegaly

Acromegaly

Growth hormone

Insulin

Insulin-like Growth Factor 1

Insulin like growth factor binding protein 7

Layla Othman

Baydaa Ahmed

Kashtl Ghasaq

Isam Noori

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The purpose of this study was to measure serum levels of insulin-like growth factor-binding protein (IGFBP7), Insulin-like Growth Factor 1 (IGF-1), Growth Hormone (GH), Interleukin 6 (IL-6) and insulin in acromegaly patients and healthy controls. The acromegaly group had 60 patients, while the population group had 30 people who had never had acromegaly before. The concentration of IGFBP7, IGF-1, GH, IL-6, and insulin were determined. The results of the present study indicate that IGFBP7 level in the acromegaly group was significantly lower (1.690.07 ng/mL vs. 2.740.12 ng/mL, respectively, p = 0.001). IGF-1, GH, IL-6, and insulin concentrations were also significantly higher in acromegaly patients. The diagnostic accuracy (2.194) was exce

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Publication Date

Tue Aug 23 2022

Journal Name

Frontiers In Energy Research

Evaluation of T-Shaped Fins With a Novel Layout for Improved Melting in a Triple-Tube Heat Storage System

Mohammadreza

Hayder I.

Raed Khalid

Anmar

Jasim M.

Hasan

Mohammad Mehdi

Pouyan

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The effects of T-shaped fins on the improvement of phase change materials (PCM) melting are numerically investigated in vertical triple-tube storage containment. The PCM is held in the middle pipe of a triple-pipe heat exchanger while the heat transfer fluid flows through the internal and external pipes. The dimension effects of the T-shaped fins on the melting process of the PCM are investigated to determine the optimum case. Results indicate that while using T-shaped fins improves the melting performance of the PCM, the improvement potential is mainly governed by the fin’s body rather than the head. Hence, the proposed T-shaped fin did not noticeably improve melting at the bottom of the PCM domain; additionally, a flat fin is ad

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Publication Date

Sun Nov 01 2020

Journal Name

Iop Conference Series: Materials Science And Engineering

Palm dates as a source for isolation of Aspergillus niger to produce citric acid by submerged fermentation; kinetics study

Dunya A

Safaa R

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AbstractThe study discussed here deals with the isolation of Aspergillus niger from palm dates, the formal and the most famous fruit in Iraq, to test and qualify this fungus isolate for its ability to produce citric acid. Submerged fermentation technique was used in the fermentation process. A.niger isolated from “Zahdi” Palme dates was used in the study of the fermentation kinetics to get the production efficiency of citric acid. Kinetics of CA production via fermentation by A. niger S11 was evaluated within 432 h fermentation time and under submerged conditions of 11% (w/v) sucrose, 5% (v/v) inoculum size, pH 4, 30 °C and 150 rpm. The maximum citric acid produced was (37.116 g/l). Kine ... Show More

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(1)

Publication Date

Mon Sep 25 2023

Journal Name

International Journal Of Energy Production And Management

Reducing Energy Consumption in Iraqi Campuses with Passive Building Strategies: A Case Study at Al-Khwarizmi College of Engineering

DesignBuilder software

Energy consumption

Natural ventilation

Passive design

Thermal energy performance simulation

Reem

Wisam S.

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University campuses in Iraq are substantial energy consumers, with consumption increasing significantly during periods of high temperatures, underscoring the necessity to enhance their energy performance. Energy simulation tools offer valuable insights into evaluating and improving the energy efficiency of buildings. This study focuses on simulating passive architectural design for three selected buildings at Al-Khwarizmi College of Engineering (AKCOE) to examine the effectiveness of their cooling systems. DesignBuilder software was employed, and climatic data for a year in Baghdad was collected to assess the influence of passive architectural strategies on the thermal performance of the targeted buildings. The simulations revealed that the

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Publication Date

Mon Jan 01 2024

Journal Name

Computers, Materials & Continua

Improving Video Watermarking through Galois Field GF(24) Multiplication Tables with Diverse Irreducible Polynomials and Adaptive Techniques

Yasmin Alaa

Abdul Monem S.

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(1)

Publication Date

Tue Aug 01 2023

Journal Name

Baghdad Science Journal

Using microalga Coelastrella sp. to remove some nutrients from wastewater invitro

Algal bio-indication

Biomonitoring

Microalgae

Nutrient removal

Water quality

wastewater treatment

Muzhda Qasim

Yahya Ahmed

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Microalgae have been increasingly used for wastewater treatment due to their capacity to assimilate nutrients. Samples of wastewater were taken from the Erbil wastewater channel near Dhahibha village in northern Iraq. The microalga Coelastrella sp. was used in three doses (0.2, 1, and 2g. l^-1) in this experiment for 21 days, samples were periodically (every 3 days) analyzed for physicochemical parameters such as pH, EC, Phosphate, Nitrate, and BOD₅, in addition to, Chlorophyll a concentration. Results showed that the highest dose 2g.l^-1 was the most effective dose for removing nutrients, confirmed by significant differences (p≤0.05) between all doses. The highest removal percentage was

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