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Silver-functionalized PVA for flexible electronics: Enhanced optical, mechanical, thermal, and electrical performance with integrated antibacterial activity
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Abstract<p>Nanocomposite films of silver-polyvinyl alcohol (Ag/PVA) with varying silver nanoparticle concentrations (1-5 wt%) were synthesized via a solution casting technique. The films were characterized by understanding the influence of Ag content on their structural, optical, mechanical, and electrical properties. UV-Vis spectroscopy (300-800 nm) revealed a red shift in absorption peaks and a significant decrease in the optical band gap from 5.39 eV to 1.06 eV with increasing Ag concentration, indicating the formation of additional energy states within the PVA matrix. FTIR and SEM analyses confirmed the successful incorporation of nanoparticles and revealed changes in surface functionalities and morphology. Mechanically, the nanocomposites exhibited enhanced tensile strength, elongation at break, Young’s modulus, and hardness, attributed to a strong interfacial network between the Ag nanoparticles and the PVA chains. The incorporation of Ag also imparted antibacterial properties and increased hydrophobicity. Electrically, the material showed a dramatic improvement in conductivity, achieving a value of 1.5×10⁵ S/cm with just 3 wt% Ag. Furthermore, AC conductivity increased with frequency and Ag content (from 5.8×10⁻⁹ to 1.01×10⁻⁴ S/cm), while the dielectric constant decreased from 0.95 to 0.25 at 1000 kHz, confirming the role of Ag in facilitating charge transport. These findings demonstrate the great potential of Ag/PVA nanocomposites for use in flexible electronics.</p>
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Publication Date
Tue Apr 01 2025
Journal Name
Journal Of Integrative Nursing
ShotBlocker versus vibration device: Which technique reduces pain and increases satisfaction in insulin injection among type 2 diabetes: A randomized controlled trial
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Objective:

To evaluate the effects of the ShotBlocker and vibration device on pain intensity and patient satisfaction during subcutaneous (SC) insulin injections in hospitalized adults with type 2 diabetes mellitus.

Materials and Methods:

In this randomized controlled trial, 102 patients with type II diabetes mellitus were randomly assigned into 3 groups: 35 patients in the ShotBlocker group, 36 patients in the vibration group, and 31 patients in the control group. ShotBlocker was applied immediately before and during the injection, while the vibration was applied fo

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Publication Date
Mon Mar 31 2025
Journal Name
International Journal Of Sustainable Development And Planning
Balancing Heritage Preservation and Sustainable Development in Historic Cities: A Case Study of Old Najaf in the Context of Global Best Practices
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Historic cities such as Old Najaf are challenged with balancing the preservation of their cultural and architectural heritage against the pressures of modern urban development. Being one of the major religious centers for Shia Islam, Old Najaf receives annual millions of pilgrims and tourists, pressuring its infrastructure and threatening its historic façade. The aim of this study was to explore the viability of integrated approaches that balance heritage conservation with sustainable urban development, and lessons learned from international best practices, as well as stakeholder perspectives on this issue in the face of these challenges. This prompted the study to identify the challenges and opportunities for the heritage preservation and

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Publication Date
Wed Sep 24 2025
Journal Name
International Journal Of Environmental Analytical Chemistry
Mesoporous activated carbon from eggshell waste via H₃PO₄ chemical activation and its application in the removal of Janus Green B dye
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The main objective of this study was to evaluate the adsorption efficiency of two adsorbent materials, Iraqi chicken eggshells (ESh) and activated carbon (AC) derived from ESh powder for the removal of a cationic dye (Janus green B; JGD) from aqueous solution. Activated carbon was synthesised from ESh using a simple chemical activation method using phosphoric acid as the activating agent. The physicochemical properties of the adsorbents were characterised by the Brunauer–Emmett–Teller (BET) method, FT-IR spectroscopy, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), inductively coupled plasma optical emission spectroscopy (ICP-OES), and point of zero charge (pHpzc). The results of BET analysis confirmed th

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Publication Date
Wed Sep 24 2025
Journal Name
International Journal Of Environmental Analytical Chemistry
Mesoporous activated carbon from eggshell waste via H₃PO₄ chemical activation and its application in the removal of Janus Green B dye
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The main objective of this study was to evaluate the adsorptionefficiency of two adsorbent materials, Iraqi chicken eggshells (ESh)and activated carbon (AC) derived from ESh powder for theremoval of a cationic dye (Janus green B; JGD) from aqueoussolution. Activated carbon was synthesised from ESh usinga simple chemical activation method using phosphoric acid asthe activating agent. The physicochemical properties of the adsor-bents were characterised by the Brunauer–Emmett–Teller (BET)method, FT-IR spectroscopy, scanning electron microscopy(SEM), energy-dispersive X-ray spectroscopy (EDS), inductivelycoupled plasma optical emission spectroscopy (ICP-OES), andpoint of zero charge (pHpzc). The results of BET analysis confirmedthat AC has

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Publication Date
Mon Apr 17 2017
Journal Name
Iraqi Journal Of Market Research And Consumer Protection
THE POSSIBILITY OF THE APPLICATION OF ENVIRONMENTAL FINES TO REDUCE THE WASTE GENERATED FROM THE SHOPE AND RESTAURANTS IN THE CITY OF BAGHDAD/ CASE STUDY.: THE POSSIBILITY OF THE APPLICATION OF ENVIRONMENTAL FINES TO REDUCE THE WASTE GENERATED FROM THE SHOPE AND RESTAURANTS IN THE CITY OF BAGHDAD/ CASE STUDY.
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The research aims to identify the possibility of applying environmental fines to commercial shops and restaurants to reduce the environmental pollution represented by the wastes generated from them. The research sample was divided into two groups, including the first (20) commercial shops (meat shops and slaughter it, fruits & vegetables, legumes and accessories) and second (30) Restaurant in the city of Baghdad on both sides of Karkh and Rusafa. The quality of the waste was classified into carton, plastic, aluminum, glass, paper, cork and food waste. The study revealed the possibility of applying environmental fines to restaurants and shops to reduce the waste generated from them throughout the year and to apply continuous monitorin

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Publication Date
Sat Feb 02 2019
Journal Name
Journal Of The College Of Education For Women
The impact of moving the educational activities in the conservation of literary texts and the development of literary taste in the fifth grade students moral: The impact of moving the educational activities in the conservation of literary texts and the development of literary taste in the fifth grade students moral
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Abstract
The study was conducted in Baghdad and aimed to:
The impact of moving the educational activities in the conservation of literary
texts and the development of literary taste in the fifth grade students moral "by
verifying the validity of hypotheses Elsafreeten following forms:
The first hypothesis:
- There are no differences in women with statistical significance between means
of scores of students three experimental groups, the experimental group first
used upstream activities in the teaching material of literature and texts, the
second experimental group used the activities of building in the teaching
material itself and the experimental group the third use activities concluding
taught the same

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Publication Date
Sun Sep 15 2019
Journal Name
Journal Of Global Pharma Technology
Effect of Citric Acid Application on Anatomical and Physiological Properties of the Vegetative Parts of a Species of Tamarindus Indica Cultivated in Iraq
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Publication Date
Thu Dec 15 2022
Journal Name
Al-academy
Strategies of brain-based learning theory and its impact on the achievement of students of the Department of Art Education in Teaching Methods
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The aim of the current research is to reveal the effect of using brain-based learning theory strategies on the achievement of Art Education students in the subject of Teaching Methods. The experimental design with two equal experimental and control groups was used. The experimental design with two independent and equal groups was used, and the total of the research sample was (60) male and female students, (30) male and female students represented the experimental group, and (30) male and female students represented the control group. The researcher prepared the research tool represented by the cognitive achievement test consisting of (20) questions, and it was characterized by honesty and reliability, and the experiment lasted (6) weeks

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Publication Date
Thu Aug 11 2022
Journal Name
Chemical Papers
Surface tensiometry study of the interfacial phenomena in the mixed surfactant solutions of sodium di-2-ethylhexylsulfosuccinate (AOT) and hexadecyl benzylammonium chloride (HDBAC)
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Publication Date
Sun Sep 01 2019
Journal Name
Journal Of Accounting And Financial Studies ( Jafs )
The causal relationship between leadership integrity and organizational conflict: An applied research in the State Real Estate Department in the province of Najaf
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This research aims to know the impact of leadership integrity as explanatory variable including its dimensions (courage, asceticism, justice, rationality, and humanity) on organizational conflict as responding variable. This research depended on the descriptive- constructive approach through the responses of a sample of (79) employees from (Real Estate Office of The State) in Al-Najaf province. The analyzing of the study done by using (Smart PLS) program to calculate (R2, t, p). Many results concluded and one of them, there is significant impact correlation of the leadership integrity on organizational conflict. There are many suggestions have been reached depending on the results reached and one of them is the necessity of de

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