Waqas Ahmad

Khyber Teaching Hospital

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Co-Authors

Imtiaz Ahmad

University of Peshawar

Hizbullah Khan

University of Peshawar

Yaseen Muhammad

University of Peshawar

Muhammad Ilyas

Shaheed Benazir Bhutto University

Mehboob Ur Rashid

Kagoshima University

Fazle Subhan

China University of Petroleum, East China

Ahmed Waqas

University of Liverpool

Sidra Subhan

University of Peshawar

Ishraq Ahmad

University of Peshawar

Syed Sikandar Shah

Universidade de São Paulo

Cooperative Institutions

University of Peshawar

CMH Lahore Medical College and Institute of Dentistry

COMSATS University Islamabad

Government College University, Faisalabad

University of Agriculture Faisalabad

The University of Agriculture, Peshawar

Pir Mehr Ali Shah Arid Agriculture University

Pakistan Agricultural Research Council

Abdul Wali Khan University Mardan

University of the Punjab

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The Catalytic Degradation of the Inflammatory Drug Diclofenac Sodium in Water by Fe2+/Persulfate, Fe2+/Peroxymonosulfate and Fe2+/H2O2 Processes: A Comparative Analysis

Water (2023)

Faiza Rehman Waqas Ahmad Nazish Parveen Syed Khuram Zakir Sanaullah Khan

Diclofenac sodium was extensively used for treating arthritis, osteoarthritis and skeletal muscular injuries, which ultimately caused troubles for aquatic organisms as well as human beings. In this study, homogeneous catalytic advanced oxidation processes, including Fe2+/persulfate, Fe2+/peroxymonosulfate and Fe2+/H2O2, were used for the degradation of diclofenac sodium in water, without using UV-C light. About 89, 82 and 54% DCF sodium was decomposed by Fe2+/persulfate, Fe2+/peroxymonosulfate and Fe2+/H2O2, respectively, in 60 min. The degradation of diclofenac sodium followed the pseudo first-order kinetics, in all cases. The degradation efficiency of diclofenac sodium was significantly affected in the presence of various anions, such as NO3−, HCO3− and SO42−. The mineralization studies revealed 62, 45 and 32% total carbon removal by Fe2+/persulfate, Fe2+/peroxymonosulfate and Fe2+/H2O2, respectively, in 60 min. In addition, the degradation byproducts of diclofenac sodium were determined by FTIR analysis. The results revealed that the Fe2+/oxidant system, particularly Fe2+/persulfate, was a promising technology for the elimination of toxic pharmaceuticals, such as diclofenac sodium, from the water environment.

Persulfate

Diclofenac Sodium

Sodium persulfate

Diclofenac

Degradation

10.3390/w15050885

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Citations (13)

Attitudes of medical students in Lahore, Pakistan towards the doctor–patient relationship

PeerJ (2015)

Waqas Ahmad Edward Krupat Yumna Asma Noor-E- Fatima Rayan Attique

Background. A good doctor-patient relationship is the centre stone of modern medicine. Patients are getting increasingly aware about exercising their autonomy and thus modern medicine cannot deliver all its advances to the patients if a good doctor-patient relationship is not established. We initiated this study with the aim to assess the leaning of medical students, who are the future physicians, towards either a doctor-centered or a patient-centered care, and to explore the effects of personal attributes on care such as gender, academic year, etc. Materials & Methods. A cross-sectional study was conducted between July and Sep 2013. CMH Lahore Medical and Dental College Ethical Review Committee approved the study questionnaire. The study population consisted of 1,181 medical students in years 1-5 from two medical colleges. The English version of Patient Practitioner Orientation Scale (PPOS) was used to assess attitudes of medical students towards doctor-patient relationship. PPOS yields a mean score range of 1-6, where 1 signifies tendency towards a doctor centered relationship and 6 signifies patient-centered relationship. The relationship between PPOS scores and individual characteristics like gender, academic year etc. were examined by multiple regression. Results. A total of 783 students formed the final sample (response rate = 92%). Mean PPOS score of the entire sample was 3.40 (± .49 S.D.). Mean sharing sub-scale score was 3.18 (± 0.62 S.D. Mean caring sub-scale score was 3.63 (± 0.56 S.D.). Characteristics associated with most patient-centered attitudes were advanced academic year, having a clinical rotation, foreign background and studying in a private college. Gender, having doctor parents, relationship and residence status had no bearing on the attitudes (p > 0.05). Conclusion. Despite ongoing debate and the emphasis on a patient-centered curriculum, our study suggests that the current curriculum and its teachings are not producing the results they are designed to achieve. Students should be adequately exposed to the patients from the beginning of their medical education in clinical settings which are more sympathetic to a patient-centered care.

Doctor–patient relationship

Cross-sectional study

10.7717/peerj.1050

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Citations (43)

Diet, exercise and mental-wellbeing of healthcare professionals (doctors, dentists and nurses) in Pakistan

PeerJ (2015)

Waqas Ahmad Frances Taggart Muhammad Shoaib Shafique Yumna Muzafar Shehnam Abidi

Background. "Health is wealth" is a time tested adage. Health becomes more relevant when it comes to professionals whose job is to provide people with services that maintain an optimum state of mental, physical and social well-being. Healthcare professionals (HCP) differ from general population in regards to the nature of their work, stress, burnout etc. which begs the need to have a robust state of health for the ones who provide it to others. We initiated this study to see if healthcare professionals "practice what they preach others." Methods. We employed a cross-sectional study design with convenience-sampling technique. Questionnaires were administered directly to the three groups of healthcare professionals (Doctors, Dentists and Nurses) across the province Punjab after their consent. 1,319 healthcare professionals took part in the study (response rate of 87.35). Warwick Edinburg Mental Wellbeing Scale (WEMWBS) was used to assess mental wellbeing. USDA Dietary Guidelines-2010 were employed to quantify diet. American Heart Association (AHA) guidelines were employed for the analysis of exercise. Results. A total of 1,190 healthcare professionals formed the final sample with doctors and nurses forming the major proportion. Out of 1,190 participants only one healthcare professional was found to eat according to USDA Dietary Guidelines; others ate more of protein group and less of fruits, dairy and vegetable groups. 76% did not perform any exercise. 71.5% worked >48 h/week. More than 50% of healthcare professionals were sleeping <7 h/day. WEMWBS score of the entire sample was 47.97 ± 9.53 S.D. Conclusion. Our findings suggest that healthcare professionals do not practice what they preach. Their mental wellbeing, diet and exercise habits are not up to the mark and should be improved to foster the whole healthcare system for individual and community benefits.

Health Professionals

10.7717/peerj.1250

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Citations (43)

Application of composite adsorbents prepared from waste PS and PET for removal of Cr and Cu ions from wastewater

Desalination and Water Treatment (2019)

Muhammad Ilyas Waqas Ahmad Hizbullah Khan Imtiaz Ahmad

10.5004/dwt.2019.24764

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Citations (19)

Recent Advancements of N-Doped Graphene for Rechargeable Batteries: A Review

Crystals (2020)

Rabia Ikram Badrul Mohamed Jan Syed Atif Pervez Vassilis Papadakis Waqas Ahmad

Graphene, a 2D carbon structure, due to its unique materials characteristics for energy storage applications has grasped the considerable attention of scientists. The highlighted properties of this material with a mechanically robust and highly conductive nature have opened new opportunities for different energy storage systems such as Li-S (lithium-sulfur), Li-ion batteries, and metal-air batteries. It is necessary to understand the intrinsic properties of graphene materials to widen its large-scale applications in energy storage systems. In this review, different routes of graphene synthesis were investigated using chemical, thermal, plasma, and other methods along with their advantages and disadvantages. Apart from this, the applications of N-doped graphene in energy storage devices were discussed.

Carbon fibers

10.3390/cryst10121080

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Citations (24)

Measuring the well-being of health care professionals in the Punjab: a psychometric evaluation of the Warwick–Edinburgh Mental Well-being Scale in a Pakistani population

PeerJ (2015)

Ahmed Waqas Waqas Ahmad Mark Haddad Frances Taggart Zerwah Muhammad

Background. There is growing awareness of the public health importance of mental well-being both in the general population and in specific groups. The well-being of health professionals is likely to influence the quality of the care they deliver. This study was carried out to examine the well-being of Pakistani healthcare professionals, and to evaluate the psychometric performance of the Warwick–Edinburgh Mental Well-being Scale (WEMWBS) in this population. Methods. A cross-sectional survey was carried out from June, 2013 to December, 2014 among 1,271 Pakistani health care providers (HCPs) working in seven different cities in Punjab province, Pakistan, to examine the acceptability, internal consistency, test-retest reliability and content and construct validity of the English version of the WEMWBS in a Pakistani population sample. All data were analyzed in SPSS v. 21. Results. Our analysis demonstrated unidimensional construct validity, high internal consistency (0.89) and test-retest reliability, good validity and easy readability of WEMWBS in our sample of Pakistani HCPs. The mean WEMWBS score was 48.1 (SD 9.4), which is lower than in the general population in other countries. Male HCPs scored significantly higher on the WEMWBS than their female counterparts ( P < 0.05), and older respondents had higher scores. Conclusion. The WEMWBS appears acceptable for use in Pakistani HCPs, and findings from this study verify its validity and internal consistency for this population sample. Our respondents had lower well-being scores than those reported in general population surveys in the UK.

Validity

Sample (material)

10.7717/peerj.1264

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Citations (47)

Catalytic Pyrolysis of Used Engine Oil over Coal Ash into Fuel-like Products

Energy & Fuels (2015)

Imtiaz Ahmad Razia Khan Mohammad Ishaq Hizbullah Khan Mohammad Ismail

The present paper reports on the conversion of spent lubricating oil (SLO) into useful fuel-like products through two-stage pyrolysis. Liquid pyrolysates (LPs) from the first stage were obtained using prebaked clay (PBC) as adsorbent and subjected to second stage pyrolysis over coal ash (CA) as catalyst. The PBC and CA were characterized by using morphological, elemental, surface, and crystallographic properties. The influence of CA concentration on the yield of LPs and their compositions in terms of hydrocarbon range and hydrocarbon group type's distributions were studied. Fuel properties such as density, specific gravity, API gravity, ash content, kinematic viscosity, pour point, aniline point, diesel index, cetane number, and calorific value of the thermally derived pyrolysate (TDLP) as well the catalytically derived liquid pyrolysate (CDLP) in comparison with the ASTM standard values were also studied. The results indicate that the CA when used in low concentration exhibited good activity and selectivity toward formation of the LPs having fuel value comparable with diesel fuel.

Heat of combustion

Cetane number

Pyrolysis oil

Specific gravity

Flash point

Liquid fuel

Fuel oil

10.1021/acs.energyfuels.5b02316

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Citations (19)

Identification of Three Novel QTLs Associated with Yellow Rust Resistance in Wheat (Triticum aestivum L.) Anong-179/Khaista-17 F2 Population

Sustainability (2022)

Muhammad Saeed Farhan Ullah Liaqat Shah Waqas Ahmad Murad Ali

Wheat yellow rust (YR) caused by Puccinia striiformis is lethal for the leaf photosynthetic process, which substantially affects yield components and ultimately causes drastic yield reduction. The current study aimed to identify all-stage YR resistance linked QTLs in the best cross-combination. Experimental materials were phenotyped for disease severity in YR-hot spot area at Cereal Crops Research Institute, Pirsabak Pakistan in Khyber Pakhtunkhwa province in 2019 and 2020 and 2020 and 2021 Rabi seasons. The AN179 × KS17 was found to be the best cross combination, which showed high resistance to YR, whereas crosses AN179 × PK15 and PR129 × PK15 demonstrated susceptibility to YR with high disease severity. The recombinant inbred lines (RIL) F2 wheat population Annong-179/Khaista-17 demonstrated highly desirable YR resistance and yield component traits. Simple sequence repeat (SSR) markers were used to genotype the RIL population and their parents. Three novel QTLs linked to all-stage YR resistance were found on chromosomes 2BS, 3BS and 6BS, which explained 1.24, 0.54, and 0.75 phenotypic variance, respectively. Incorporation of the newly identified novel YR-resistance associated QTLs into hybridization wheat breeding program could be effective for marker-assisted selection of the improved and sustainable resistance.

Rust (programming language)

Inbred strain

Marker-Assisted Selection

Breeding program

10.3390/su14127454

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Citations (7)

Engineering TiO2 supported CTAB modified bentonite for treatment of refinery wastewater through simultaneous photocatalytic oxidation and adsorption

Journal of Water Process Engineering (2021)

Ihtisham Ul Haq Waqas Ahmad Imtiaz Ahmad Yaseen Muhammad Muhammad Ilyas

Bentonite

Refinery

10.1016/j.jwpe.2021.102239

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Citations (34)

Polycyclic aromatic hydrocarbons removal from vehicle-wash wastewater using activated char

Desalination and Water Treatment (2021)

Muhammad Ilyas Waqas Ahmad Hizbullah Khan

In this study, waste polyethylene terephthalate (wPET) and waste polystyrene (wPS) was converted into activated char (AC) and utilized for the removal of polycyclic aromatic hydrocarbons (PAHs) from vehicle-wash wastewater (VWW).AC was prepared by carbonization in nitrogen atmosphere at high temperature followed by chemical activation with 1 M KOH and HCl.The AC was investigated by surface area analyser, Fourier-transform infrared spectroscopy as well as scanning electron microscopy.The removal of PAHs from VWW through AC was examined by batch adsorption tests.Adsorption factors, including; initial PAHs concentration, contact time, temperature, and adsorbent dose were studied.The PAHs contents were measured by using a UV spectrometer and the adsorption efficiency was calculated under optimal conditions.Kinetic and isotherm models were applied to evaluate the adsorbents' capacity for PAHs adsorption.Kinetic studies have shown that the adsorption of these PAHs on AC follows pseudo-second-order kinetics.Experimental results show that both Langmuir and Freundlich isotherm models are most suitable for this data.The calculated thermodynamic factors such as entropy change (ΔS°), enthalpy change (ΔH°) and free energy change (ΔG°) indicate that the adsorption process is essentially non-spontaneous and exothermic.This examination revealed that the novel AC presents a large potential in the PAHs elimination and recovery from VWW.

10.5004/dwt.2021.27667

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Citations (8)