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Synthesis, Characterization, Photocatalytic and Antimicrobial Activities of Copper Doped Silver and Nickel Oxide Nanoparticles

Nosheen Shaukat, Zaheer Ahmad, Khurram Shahzad Munawar, Syed Mustansar Abbas
2021 LGU journal of life sciences  
ABSTRACT: The copper-doped silver and nickel oxide nanoparticles were prepared by the co-precipitation method in which the silver oxide (Ag2O) and nickel oxide (NiO) nanoparticles are doped with copper in 4:1 in the presence of sodium dodecyl sulfate (SDS), a surfactant. Then various analytical studies were carried out by using X-ray diffraction (XRD) and Diffuse reflectance spectroscopy (DRS). The XRD analysis revealed the crystalline structure and the size of nanoparticles was determined by
more » ... ing Scherrer's formula. The XRD data showed the effect of doping on crystallinity and size. It was found that the size of nanoparticles was reduced without any change in crystallinity after doping. DRS results showed that when silver oxide and nickel oxide nanoparticles were doped with copper oxide nanoparticles, the energy band gap was shifted to a lesser value, i.e., from 1.50 to 1.17 eV for Ag2O and from 2.29 to 2.08 eV for NiO, respectively. The photocatalytic degradation of methylene blue (MB) and eriochrome black-T (EBT) by nanoparticles was monitored by UV-Vis spectroscopy. The antimicrobial activity of the synthesized nanoparticles was checked by using well diffusion assay and it was found that doped nanoparticles were more active than the undoped ones.
doi:10.54692/lgujls.2021.0501143 fatcat:xecxr6zfdreohhsojtzqdfc7ke

Corporate Governance's Role in Mitigating Earnings Manipulations: Evidence from Asian Economies

Yasar Abbas, Zaheer Abbas
2021 Global Economics Review  
The purpose of this research is to examine the relationship between corporate governance and earnings management in Asian emerging economies Pakistan,India, and Malaysia. The annual financial data of 196 listed non-financial firms for ten years (2010 - 2019) was used as a sample of the study. Panel data fixed-effect method was appropriate for this study. The findings of the current study established a negative association between corporate governance attributes (board of directors and the audit
more » ... committee) and accrual earnings management. Boards and audit committees with the right characteristics boost stakeholder and shareholder loyalty and retention. Corporate governance is getting much significance in developing economies to establish the trust of regulators,investors, and economic analysts in emerging economies.
doi:10.31703/ger.2021(vi-iv).04 fatcat:gl7rfvvnmvf6xafjusbm72oclq

Methicillin-resistant Staphylococcus aureus in poultry- an emerging concern related to future epidemic

Zaytoon Zaheer, Sajjad Ur Rahman, Iqra Zaheer, Ghazanfar Abbas, Tayyaba Younas
2017 Matrix Science Medica  
Cite this article as: Zaytoon Zaheer, Sajjad Ur Rahman, Iqra Zaheer, Ghazanfar Abbas, Tayyaba Younas, Methicillin-resistant Staphylococcus aureus in poultry-an emerging concern related to future epidemic  ...  Sc.Cite this article as: Zaytoon Zaheer, Sajjad Ur Rahman, Iqra Zaheer, Ghazanfar Abbas, Tayyaba Younas, Methicillin-resistant Staphylococcus aureus in poultry-an emerging concern related to future epidemic  ... 
doi:10.26480/msm.01.2017.15.18 fatcat:4sm6t66nafd5vits4vvwrzrnjy

Convergence of Generalized Lupaş-Durrmeyer Operators

Mohd Qasim, Mohammad Mursaleen, Asif Khan, Zaheer Abbas
2020 Mathematics  
The main aim of this paper is to establish summation-integral type generalized Lupaş operators with weights of Beta basis functions which depends on μ having some properties. Primarily, for these new operators, we calculate moments and central moments, weighted approximation is discussed. Further, Voronovskaya type asymptotic theorem is proved. Finally, quantitative estimates for the local approximation is taken into consideration.
doi:10.3390/math8050852 fatcat:ueom7ln52ngephf3pyptqelyde


Dr Muhammad Ilyas, Dr Rabia Babar, Dr. M. Zaheer Abbas
2019 Zenodo  
Objective: The inflammation of gall-bladder is known as AC (Acute Cholecystitis). There is classification of the severity of this disease as mild, moderate, severe in accordance with the TGs (Tokyo Guidelines). The aim of this research work is to determine the parameters of laboratory findings for the prediction of the seriousness or extremity of the acute Cholecystitis in our hospital. Methodology: We reviewed 90 patients suffering from acute cholecystitis retroactively. We treated these
more » ... ts in the surgical department of Allama Iqbal Memorial Teaching Hospital Sialkot for a period of complete one year from June 2018 to May 2019. We divided all the patients into three groups depending upon the severity of the AC. Results: Baseline average values for count of WBC (White Blood Cell), BUN (Blood Urea Nitrogen), and INR (International Normalized Ratio) creatinine were very high in group of severe patients at a level of significance in comparison with the patients of mild group. The level of the white blood cell was high in the patients of moderate group as compared to the patients of mild group. There was no parameter of laboratory which differentiated the patients of severe group from the patients of the moderate group. Conclusion: Patients with AC with high levels of white blood cell, BUN, INR & creatinine at the time of admission should get referrals to the advanced health care centers for proper management of the complication. Keywords: Tokyo Guidelines, Acute Cholecystitis, Surgery, Abdomen, Prediction, Severity, Seriousness.
doi:10.5281/zenodo.3470833 fatcat:hmnvhg7eonbibonp3weuf3blfq

Assessment of Avermectins-Induced Toxicity in Animals

Muhammad Salman, Rao Zahid Abbas, Khalid Mehmood, Riaz Hussain, Sehar Shah, Mehwish Faheem, Tean Zaheer, Asghar Abbas, Bernardo Morales, Ina Aneva, José L. Martínez
2022 Pharmaceuticals  
Macrocyclic lactones, particularly the avermectins, have completely revolutionized the approaches aimed at control of parasites. These avermectins are the most widely used anti-parasitic drugs in veterinary field with sales exceeding one billion US dollars annually. However, before clinical usage, their safety evaluation in the animals is a major critical factor that must be considered. Many studies have reported the negative effects of avermectins like ivermectin, abamectin, doramectin, and
more » ... inomectin on the host animals. These harmful effects arise from avermectins targeting GABA and glutamate-gated chloride channels present both in the parasites and the host animals. In this review, various modes of avermectins action along with the negative effects on the host like nephrotoxicity, hepatotoxicity, neurotoxicity, reproductive toxicity, and endocrine disruption were discussed in detail. Furthermore, other important issues like ecotoxicity, drug resistance, and drug residues in milk associated with avermectins usage were also discussed, which need special attention.
doi:10.3390/ph15030332 pmid:35337129 pmcid:PMC8950826 fatcat:jkwg43lquvgznfttkuqlctzzam

Online versus Traditional Learning: Outcomes of First Online Learning Experience

Uzair Abbas, Memoona Parveen, Ambreen Ashfaque, Ramlah Naz, Sidra Zaheer, Zaheer Amjad
2021 Pakistan Journal of Medical and Health Sciences  
Aim: To evaluate the learning outcomes of first experience with online learning in a medical college in Pakistan. Study design: Retrospective cross-sectional study Place and duration of study: Dow University of Health Sciences, Karachi, Pakistan from 1stJanuary 2021 to 30th May 2021. Methodology: This study compared the module exam scores of pre-clinical first-year MBBS students of the year 2019 (group A) and year 2020 (group B). Group A was taught in 2019 through the traditional method of
more » ... ing while group B was taught online in 2020. Results: The mean score of group B online teaching was significantly higher than that of group A, studied through the traditional method in all three modules, foundation module, locomotor module, and blood module. Group B secured a significantly higher mean score than that of group A with a significant p-value of <0.001, 0.043, and 0.001respectively. Conclusion: The score gained by online learners using virtual teaching methods was significantly higher than those who were taught by traditional method. The results of this study imply that using online educational teaching and learning can lead to the promotion of educational level and enhancement of score levels in students. Keywords: Online learning, Traditional learning, Medical education
doi:10.53350/pjmhs211592248 fatcat:bfv65mq2kje3jiycohkdh7fh3i

The Eco-Environmental Changes in Typical Coastal Zones of Southern China From 1987 to 2020: A Case Study of Guangdong Coastal Counties

Yuchen Li, Yuchen Li, Zaheer Abbas, Zaheer Abbas, Danying Chen, Danying Chen, Ziyang Zhu, Ziyang Zhu, Haijing Guo, Haijing Guo, Yaolong Zhao, Yaolong Zhao
2022 Frontiers in Environmental Science  
Population growth, socioeconomic development, and rapid urbanization have exacerbated the deterioration of coastal ecosystems, particularly in the coastal region of southern China, which has experienced significant urbanization. A precise and timely insight into the ecological changes is indicative of economic and environmental harmonization in southern coast of China and other regions of the world. This study applied 731 Landsat images to assess quantitatively the spatial and temporal
more » ... of ecological environment quality in the coastal zone of South China during 1987─2020 based on the remote sensing ecological index (RSEI). The results show that 1) the correlation between the RSEI calculated using Landsat data and the parameters is more than 75%, and the results were significant when applied to assess the ecological environment of the coastal zone in South China. ​2) The ecological quality of the coastal zone in South China as a whole showed a slight initial degradation during 1987─2020, followed by a gradual improvement trend and then a slight degradation; the area with good ecological quality decreased from 38.96 to 7.97%, and then gradually recovered to 56.61% in 2010. Subsequently, the regions with good ecological quality showed a significant decline, reducing to 1.72%, and then increasing to 38.46% until 2020. In addition, regional differences persisting during the study period are caused by the impact of human activities on the land use types of different landscapes. 3) Good and moderate ecological quality classes occupy most of the coastal zones in South China, but the pressure on the coastal zone is still not optimistic due to the sensitivity of the coastal zone and the accelerated urbanization in South China. As a large-scale, long time series of coastal zone ecological monitoring, this study can provide support for planning, ecological monitoring, environmental protection policy formulation, and integrated regional management of coastal zones and similar areas in South China.
doi:10.3389/fenvs.2022.874364 doaj:c5fbf4954b6542a0bf18cabe97e2cf97 fatcat:7morxjnos5eg5bzp2j6hv5necq

Digital Libraries: From Process Modelling to Grid-based Service Oriented Architecture [article]

Zaheer Abbas Khan, Mohammed Odeh, Richard McClatchey
2006 arXiv   pre-print
Graphical Business Process Modelling Languages (BPML) like Role Activity Diagrams (RAD) provide ease and flexibility for modelling business behaviour. However, these languages show limited applicability in terms of enactment over distributed systems paradigms like Service Oriented Architecture (SOA) based grid computing. This paper investigates RAD modelling of a Scientific Publishing Process (SPP) for Digital Libraries (DL) and tries to determine the suitability of Pi-Calculus based formal
more » ... oaches to enact SOA based grid computing. In order to achieve this purpose, the Pi-Calculus based formal transformation from a RAD model of SPP for DL draws attention towards a number of challenging issues including issues that require particular design considerations for appropriate enactment in a SOA based grid system.
arXiv:cs/0602082v1 fatcat:ivfktwffsnesdgcby5zdk45dli

Automatic Vehicle Checking Agent (VCA) [article]

Bashir Ahmad, Shakeel Ahmad, Shahid Hussain, Muhammad Zaheer Aslam and Zafar Abbas
2011 arXiv   pre-print
A definition of intelligence is given in terms of performance that can be quantitatively measured. In this study, we have presented a conceptual model of Intelligent Agent System for Automatic Vehicle Checking Agent (VCA). To achieve this goal, we have introduced several kinds of agents that exhibit intelligent features. These are the Management agent, internal agent, External Agent, Watcher agent and Report agent. Metrics and measurements are suggested for evaluating the performance of
more » ... c Vehicle Checking Agent (VCA). Calibrate data and test facilities are suggested to facilitate the development of intelligent systems.
arXiv:1104.1677v2 fatcat:fvyqrtm2m5f7zipkwawkvrm2ze

Consistent defined threshold and equity in health

Shekoufeh Nikfar, Zaheer-Ud-Din Babar, Rassoul Dinarvand, Abbas Kebriaeezadeh, Mohammad Abdollahi
2015 DARU  
doi:10.1186/s40199-015-0097-6 pmid:25890072 pmcid:PMC4334401 fatcat:opez4mbpmrdnrcrsxbvfb62hym

Pemphigus Vulgaris Presented with Cheilitis

Zaheer Abbas, Zahra Safaie Naraghi, Elham Behrangi
2014 Case Reports in Dermatological Medicine  
Background. Pemphigus vulgaris is an autoimmune blistering disease affecting the mucous membrane and skin. In 50 to 70% of cases, the initial manifestations of pemphigus vulgaris are oral lesions which may be followed by skin lesions. But it is unusual for the disease to present with initial and solitary persistent lower lip lesions without progression to any other location.Main Observations. We report a 41-year-old woman with dry crusted lesions only on the lower lip, clinically resembling
more » ... nic cheilitis and erosive lichen planus, but histopathological evaluation showed unexpected results of suprabasal acantholysis and cleft compatible with pemphigus vulgaris. We treated her with intralesional triamcinolone 10 mg/mL for 2 sessions and 2 g cellcept daily. Patient showed excellent response and lesions resolved completely within 2 months. In one-year follow-up, there was no evidence of relapse or any additional lesion on the other sites.Conclusion. Cheilitis may be the initial and sole manifestation of pemphigus vulgaris. Localized and solitary lesions of pemphigus vulgaris can be treated and controlled without systemic corticosteroids.
doi:10.1155/2014/147197 pmid:25328720 pmcid:PMC4195250 fatcat:jvxmmvyj4vaivktlibtjnysppy

Approximation by Generalized Lupaş Operators Based on q-Integers

Mohd Qasim, M. Mursaleen, Asif Khan, Zaheer Abbas
2020 Mathematics  
The purpose of this paper is to introduce q-analogues of generalized Lupaş operators, whose construction depends on a continuously differentiable, increasing, and unbounded function ρ . Depending on the selection of q, these operators provide more flexibility in approximation and the convergence is at least as fast as the generalized Lupaş operators, while retaining their approximation properties. For these operators, we give weighted approximations, Voronovskaja-type theorems, and quantitative estimates for the local approximation.
doi:10.3390/math8010068 fatcat:pbwqjhdtmzel5dzc6m3vpoyraa

Atrophying Pityriasis Versicolor : A Rare Variant

Kikkeri Narayanshetty Naveen, Zaheer Abbas Ali Khan Pathan
2014 Egyptian Dermatology Online Journal  
Pityriasis versicolor presents as scaly hyperpigmented or hypopigmented macules on the chest, abdomen, back and proximal extremities. The atrophying variant is very rare. We report a case of a 40 year old female who presented with atrophic hyperpigmented and hypopigmented macules with fine scaling all over the body with sparing of the face. The clinical differential diagnosis considered were atrophying pityriasis versicolor, atrophoderma of Pasini and Pierini, anetoderma, morphea, systemic
more » ... erythematosus and dermatomyositis. Biopsy findings supported the diagnosis of atrophying pityriasis versicolor.
doi:10.12816/0025644 fatcat:634u64itorgy7olnjm4d7eyf7a

Extracting Earthquake Induced Coherent Soil Mass Movements [chapter]

Kazuo Konagai, Zaheer Abbas, Yu Zhao
2012 Earthquake Research and Analysis - New Frontiers in Seismology  
doi:10.5772/30822 fatcat:aiewgjtmrfhbznso25uy3zhea4
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