Hazha Omar Othman

Hazha Omar Othman
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Hazha verified their affiliation via an institutional email.
Verified
Hazha verified their affiliation via an institutional email.
Salahaddin University-Erbil | SUH

PhD
{looking for a postdoctoral position in nanochemistry, biosensors, chemosensors, nanomaterials, material engineering}

About

27
Publications
3,095
Reads
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259
Citations
Additional affiliations
March 2015 - present
Salahaddin University-Erbil
Position
  • Lecturer
January 2015 - November 2020
Salahaddin University-Erbil
Position
  • Faculty Member
Education
February 2012 - March 2015
Salahaddin University-Erbil
Field of study
  • Analytical Chemistry
October 2005 - July 2009
Salahaddin University-Erbil
Field of study
  • Chemistry

Publications

Publications (27)
Article
This study presents the development of two simple, sensitive, and selective microextraction and preconcentration procedures for determining nicotinamide (NAM) in pharmaceutical formulations and blood samples. The methods utilize the König reaction, where cyanogen chloride, formed by reacting potassium thiocyanate with sodium hypochlorite in acidic...
Article
Abstract This study introduces a highly sensitive and selective method for detecting caffeine in energy drinks by using red florescence iron and nitrogen co doped carbon dots (Fe-NCDs) as a florescent prob. The Fe-NCDs were synthesized by using an eco-friendly hydrothermal. Providing uniform, quasi-spherical nanoparticles. The photoluminescence pro...
Article
Full-text available
Carbon quantum dots (CQDs) constitute one of the most important breakthroughs in biomedicine due to unique and highly beneficial characteristics that essentially include intrinsic fluorescence, high biocompatibility, cost-effective and scalable synthesis, water solubility, nanoscale size, low toxicity, and easy functional modification. Such feature...
Article
Full-text available
The new strategies in this regard of nanotechnology and biotechnology guarantee new, efficient modalities for cancer therapy. In this study, we explore nanobiohybrids, the bacterium-targeted cancer treatment approach that presents a new category of therapeutic carriers for treating cancer. We specifically focus on bacteriomimetics, where bacteria a...
Article
In recent years, the progress in smartphone technology has made them affordable and versatile platforms for various applications, including chemical analysis. This article explores the evolving landscape of smartphone-assisted colorimetry, focusing on its role in the detection of drugs and food coloring. We provide a comprehensive overview of the c...
Article
Full-text available
The green method was developed for synthesizing a low-toxic nanocomposite of AgNPs colliding with carbon quantum dots (CQDs) by hydrothermal treatment (temp., time). The CQDs were prepared by hydrothermal onion juice treatment and then acted as reducing and stabilizing agents to synthesize a nanocomposite of AgNPs colliding with CQDs. In the second...
Article
Gene therapy is a revolutionary technology in healthcare that provides novel therapeutic options and has immense potential in addressing genetic illnesses, malignancies, and viral infections. Nevertheless, other obstacles still need to be addressed regarding safety, ethical implications, and technological enhancement. Nanotechnology and gene therap...
Article
This study examined the heavy metal content in dust storm samples from Erbil, Iraq, along with four other locations. Using ICP-MS, Cd, Ni, Cr, Hg, Pb, Zn, Mn, Cu, Co, Fe and As were determined. The health risks due to exposure to these metals through ingestion, inhalation and dermal contact were assessed for both adults and children. Non-carcinogen...
Article
Full-text available
This article presents an environmentally friendly method of exploiting and recycling waste materials by synthesizing nanoparticles (NPs) from natural waste resources. Calcium oxide NPs have been synthesized from chicken eggshells through the sol-gel method. Sol-gel is a simple, cheap, low-temperature and low-pressure method for synthesizing metal o...
Article
Novel spectrophotometric and smartphone-based colorimetric methods were developed and validated for the estimation of atenolol (ATE) in pharmaceutical formulations. The measurement procedure is based on the de-diazotization reaction, in which ATE is able to inhibit the diazotized sulfanilic acid from reacting with 8-hydroxy quinoline (8-HQ) in a ba...
Article
Full-text available
A green and simple method was proposed for the synthesis of silver nanoparticles (AgNPLs) on novel activated carbon (AC) using glucose and dextrin as reducer and stabilizer of silver ions. Semecarpus anacardium (SA) nutshells, an agricultural waste, were used as precursors to prepare low-cost activated carbon (AC) with a high surface area by chemic...
Article
The risk to human health from heavy metals is primarily associated with the consumption of foodstuffs that are contaminated with these metals. This study aimed to assess the health risks associated with the consumption of toxic metal-contaminated legumes in Erbil, Iraq. The concentrations of 14 metals, namely cadmium (Cd), lead (Pb), zinc (Zn), cop...
Article
Full-text available
This study used a hydrothermal approach to create a sensitive and focused nanoprobe. Using an “on-of-on” sensing mechanism, the nanoprobe was employed to detect and quantify ferric ions and L-ascorbic acid. Synthesis of the carbon quantum dots was achieved with a single hydrothermal step at 180° C for 24 hours using hot pepper as the starting mater...
Article
Colorectal cancer (CRC) is considered a lethal cancer all around the world, and its incidence has been reported to be increasing. Chemotherapeutic drugs commonly used for treating this cancer have shown some drawbacks, including toxicity to healthy cells and non-precise delivery. Thus, there is a necessity for discovering novel diagnostic and thera...
Article
Full-text available
Recently, solvothermal technique was used to explore and construct 3D(micro/nano)V2O5 growth on (M-PSi) as a sensing gate for the pH EG-FET device. The sensor has high sensitivity and a linear response in the pH range of 2–12, as well as relatively high hysteresis. However, around pH 12, the membrane gradually degrades and redox species in solution...
Article
Full-text available
A heterostructure of (Au-NPs/MacroPSi) was synthesized by filtering a colloidal of gold nanoparticles (Au-NPs) into MacroPSi layer using high voltage electrophoretic deposition (HVEPD). The aim of that is to enhance the performance of MacroPSi used as a pH-EGFET sensor. For this purpose, the MacroPSi with an average pore size of 1.388 μm was synthe...
Article
In this work, a novel strategy was addressed to fabricate new sensing probe ([email protected]) from nitrogen doped carbon dots (N-CDs) confined in Al-free ferrisilicates zeolite (NaFZ) by hydrothermal/solvothermal method. The probe was systematically characterized by HR-TEM, FTIR, energy dispersive X-ray (EDX), powder X-ray diffraction, and UV–Vis...
Article
Full-text available
A new colorimetric aptasensor equipped with a novel composite of graphitic carbon nitride (g-C3N4) nanosheets and copper oxide(I) (Cu2O) nanocrystals is presented for Salmonella typhimurium (S .typhimurium). The dual-purpose structure of this composite simultaneously contributes to superb peroxidase-like activity and interaction with a label-free a...
Article
The drawbacks of using an enzymatic assay as a traditional protocol for glucose include cost, time consumption, instability, and denaturation of glucose oxidase. Recently, glucose sensing with the aid of boronic acid-based molecules and their derivatives has been developed as an alternative tool to commonly used methods. In this work, a simple sing...
Article
Full-text available
The magnitude of the risks in the face of the COVID-19 disease is increasing every day, and foreshadowing a catastrophe facing humanity. It is clear, the levels of health services in different countries around the world are very different, therefore there will be many health risks in countries that are suffering in terms of health services. The obj...
Preprint
Full-text available
COVID-19, a pandemic affecting virus, which is caused by the current SARS-CoV2 coronavirus. The present research is performed on anti virus and immune-modulating therapies. Cytokine storms are the toxic drivers and mortality caused by various human viral infections. In addition, the intensity was linked to an elevated risk of acute respiratory fail...
Preprint
COVID-19, a pandemic affecting virus, which is caused by the current SARS-CoV2 coronavirus. The present research is performed on anti virus and immune-modulating therapies. Cytokine storms are the toxic drivers and mortality caused by various human viral infections. In addition, the intensity was linked to an elevated risk of acute respiratory fail...
Article
A selective, fast acting and eco–friendly fluorescence immunoassay technique based on Nitrogen doped carbon dots (NCDs) is proposed for the detection of Nuclear Matrix Protein 22 (NMP22, antigen). Via the hydrothermal method and with the use of citric acid and urea, we synthesized NCDs with high quantum yield. Monoclonal antibodies (mAb, antibody)...
Article
Full-text available
A novel strategy is reported for highly sensitive, rapid, and selective detection of nuclear matrix protein NMP22 using two-color quantum dots based on fluorescence resonance energy transfer (FRET). Quantum dots (QDs) are highly advantageous for biological imaging and analysis, particularly when combined with (FRET) properties of semiconductor quan...

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