nazeer ahmed - Academia.edu (original) (raw)

Papers by nazeer ahmed

Saudi Journal of Biological Sciences

Frontiers in Microbiology

Coronavirus disease 2019 (COVID-19) has been a pandemic disease reported in almost every country ... more Coronavirus disease 2019 (COVID-19) has been a pandemic disease reported in almost every country and causes life-threatening, severe respiratory symptoms. Recent studies showed that various environmental selection pressures challenge the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infectivity and, in response, the virus engenders new mutations, leading to the emergence of more virulent strains of WHO concern. Advance prediction of the forthcoming virulent SARS-CoV-2 strains in response to the principal environmental selection pressures like temperature and solar UV radiation is indispensable to overcome COVID-19. To discover the UV-solar radiation-driven genomic adaption of SARS-CoV-2, a curated dataset of 2,500 full-grade genomes from five different UVindex regions (25 countries) was subjected to in-depth downstream genome-wide analysis. The recurrent variants that best respond to UV-solar radiations were extracted and extensively annotated to determine their possi...

Sustainability

Earthworms mix soil layers and bind the soil with organic matter. This combination allows organic... more Earthworms mix soil layers and bind the soil with organic matter. This combination allows organic matter to disperse through the soil and also allows plants to access the nutrients they retains and enhance the soil’s fertility. Earthworms improve the soil’s biological, chemical, and physical characteristics and serve as soil conditioners. They do so by dissolution, aeration, soil organic breakdown, the release of plant nutrients, and their role in the fastening of nitrogen due to plant growth hormone secretion. However, a variety of soil and environmental factors influence the soil population. Furthermore, it remains uncertain how soil worms modify soil microbial communities’ composition and how they impact the soil’s microbial process. By feeding on microorganisms or selecting and stimulating specific microbial groups, earthworms reduce microbes’ activity and abundance. Earthworms directly impact the plant’s growth and recycling of nutrients but are mainly mediated by indirect micr...

Journal of the Irrigation and Drainage Division

Journal of the Hydraulics Division

International Journal of Energy Sector Management

Purpose The purpose of this paper is to examine the effect of crude oil prices on the Nigerian ex... more Purpose The purpose of this paper is to examine the effect of crude oil prices on the Nigerian exchange rate with emphasis on discriminating between the effects of positive and negative changes in oil price on exchange rate. Design/methodology/approach The authors used monthly time series data from 1996:1 to 2019:6 and adopted two oil price measures, namely, Brent crude and West Texas Intermediary prices. For analysis, the authors used stepwise least squares to estimate a non-linear ARDL (NARDL) model and Wald tests to determine cointegration and the presence of asymmetric effects. Findings The findings showed that positive and negative Brent crude price changes significantly affect exchange rates differently in nominal terms, both in the long-run and short-run. However, the differences were purely in terms of effect size because the exchange rate decreased for both negative and positive oil price changes. Originality/value Whilst empirical research on asymmetries in the effect of o...

Biosensors

MXenes-Ti3C2Tx, based on their versatile surface characteristics, has rapidly advanced as an inte... more MXenes-Ti3C2Tx, based on their versatile surface characteristics, has rapidly advanced as an interactive substrate to develop electrochemical sensors for clinical applications. Herein, Ni embedded Ti3C2Tx (MX−Ni) composites were prepared using a self-assembly approach where Ti3C2Tx sheets served as an interactive conductive substrate as well as a protective layer to nickel nanoparticles (Ni NPs), preventing their surface oxidation and aggregation. The composite displayed a cluster-like morphology with an intimate interfacial arrangement between Ni, Ti3C2Tx and Ti3C2Tx-derived TiO2. The configuration of MX−Ni into an electrochemical sensor realized a robust cathodic reduction current against methylmalonic acid (MMA), a biomarker to vitamin B12 deficiency. The synergism of Ni NPs strong redox characteristics with conductive Ti3C2Tx enabled sensitive signal output in wide detection ranges of 0.001 to 0.003 µM and 0.0035 to 0.017 µM and a detection sensitivity down to 0.12 pM of MMA. Im...

European Online Journal of Natural and Social Sciences, Jun 24, 2021

The study was carried out at tehsil Bela and Wadh using random sampling method. The data was coll... more The study was carried out at tehsil Bela and Wadh using random sampling method. The data was collected from 05 union councils (UC) of each tehsil. From each UC 20 farmers were interviewed. Data was collected out of 200 respondents to complete this survey. The result revealed that a majority of the livestock owners earned Rs. 25,000-Rs. 30,000 per month, while 29% and 25% of them earned Rs. 20,001-Rs. 25,000 per month, on average. A majority of the livestock owners (55% and 47%) were of the view that income earned from livestock fulfill their needs while 16% from Wadh and 13% from Bela reported that income received from livestock farming contribute meaningfully to meeting their domestic needs to a much extent. 14% from Wadh and 17% from Bela are of the view that income received from livestock farming fulfilled their domestic needs to an average extent. Regression analysis revealed that livestock ownership significantly improved welfare in form of greater household income. From the regression analysis, it was also found that cows and camel ownership affect household income the most. Thus, cows and camels may be the most important livestock that can be used to improve smallholder farmers' welfare through suitable policy actions in Pakistan. Based on the findings, the study concludes that livestock production is an integral part of rural farmers in tehsil Bela and Wadh, contributing towards development particularly in those areas. Farmers own livestock as one of the prime income generating source to support their livelihood.

Journal of Applied and Emerging Sciences, 2012

Dengue viral infections pose threat to almost half of the world's population health. The recent o... more Dengue viral infections pose threat to almost half of the world's population health. The recent outbreak of dengue fever in Pakistan has invited attention of the scientific community to attempt devising ways and means and initiating programs controlling this menace. This work is also a step forward in the same direction. Utilizing different in-silico approaches like CLC Bio workbench, Protparam and Virus mploc comparative analysis of the full length genome and proteome of dengue virus serotypes was performed. All the four serotypes exhibited high level of similarities both at genome and proteome level. However, variations still existed though insignificant. Concerning prediction of sub-cellular localization of viral capsid, envelop and membrane glycoprotein in the host cell, all three proteins in four serotypes were shown to target endoplasmic reticulum. Endoplasmic reticulum hosting the viral structural proteins emerges as the pivot of the future studies aiming controlling dengue infections.

Hydraulics of Wells, 2014

Journal of the Hydraulics Division, 1978

... CE Database Search | Descriptions | Search Tips | Subject Heading List. Discussion of &am... more ... CE Database Search | Descriptions | Search Tips | Subject Heading List. Discussion of &quot;Effect of Temperature on Channel Resistance&quot;. See original paper by Nazeer Ahmed , M.ASCE , (Sr. Assoc., Wilson and Assoc., Cincinnati, Ohio) Journal of the Hydraulics Division , Vol. ...

This experiment was carried out in the research area of Agricultural Faculty, Gomal University, D... more This experiment was carried out in the research area of Agricultural Faculty, Gomal University, Dera Ismail Khan to determine the best nutritional growing media for the growth and development of garlic. There were total fifteen treatments; each treatment was replicated for three times i.e. for each treatment three pots were used for seeding of cloves, each pot containing four cloves. Thus, a total of 45 pots were used and a total of 180 cloves were sown. This study revealed that T2 (FYM) differed significantly from all other treatments and remained the best media number of leaves plant-1, leaf length, number of cloves per garlic, diameter of garlic, length of cloves, diameter of cloves and weight of garlic. However, T2 (FYM) was statistically same to T3 (PM) for all parameters except weight of garlic. Full dose of FYM proved to be the best regarding garlic production, followed by full dose of T3 (PM) which was the second-best media. Half dose of both FYM + PM (T8) resulted better af...

Plant hormones are small signaling molecules that regulate almost every aspect of plant life cycl... more Plant hormones are small signaling molecules that regulate almost every aspect of plant life cycle. Plant pathogens alter hormonal balance of the host to cause disease. In response, host redefines hormone signaling networks to cope with the invading pathogen. Biotrophic pathogens are generally sensitive to salicylic acid mediated defense responses, whereas necrotrophic pathogens are deterred through jasmonate/ethylene pathways. Interaction between these pathways is regarded as central backbone of plant immunity. Classic hormones such as auxin, gibberellin, and cytokinin either promote salicylic acid or jasmonates mediated networks of immunity in plants. Here, we advocate a network biology perspective and emphasize the application of systems biology approaches for a comprehensive understanding of plantpathogen interactions.

Pakistan Journal of Medical and Health Sciences, 2021

Objective: To compare the outcomes of caudal block with or without intravenous dexamethasone in c... more Objective: To compare the outcomes of caudal block with or without intravenous dexamethasone in controlling post-herniotomy pain in pediatric population Patients and Methods: A total of 90 patients who underwent inguinal herniotomy were included in this prospective comparative study. The study was conducted in a tertiary care setup in Qatar from Jan-2020 to May-2021. Patients were randomly allocated to two groups. Group A (dexamethasone) patients received dexamethasone intravenous 0.25 mg/kg in 5 ml of distilled water, 10 minutes before surgery. Group B (control) received 5 ml of normal saline, 10 minutes before surgery. The patients were followed for up to 240 minutes after surgery to determine adequate pain relief. Results: Mean age of the children included in this study was 7.11±1.95 years. There were 46 (51.1%) female children and 44 (48.9%) male children. Adequate post-operative pain relief was achieved in 30 (33.33%) patients, while rescue analgesia was needed in remaining 60 ...

Journal of the Hydraulics Division, 1974

... Find a Local Group; Find a Technical Group. CE Database Search | Descriptions | Search Tips |... more ... Find a Local Group; Find a Technical Group. CE Database Search | Descriptions | Search Tips | Subject Heading List. Discussion of &quot;Friction Factor and Reynolds Number in Porous Media Flow&quot;. See original paper by Nazeer Ahmed , AMASCE , (Assoc. Prof. of Civ. ...

Journal of the Irrigation and Drainage Division, 1978

... Discussion of &quot;Drain Spacing Based on Dynamic Equilibrium&quot;. See ori... more ... Discussion of &quot;Drain Spacing Based on Dynamic Equilibrium&quot;. See original paper by NazeerAhmed , M.ASCE , (Vice Pres., Wilson &amp; Assocs., Cincinnati, Ohio) Journal of the Irrigation and Drainage Division , Vol. 104 , No. 1 , March 1978 , pg. ...

Indian horticulture, 2015

Apple is a major horticultural crop and a remunerative source of income for farmers. Instpite of ... more Apple is a major horticultural crop and a remunerative source of income for farmers. Instpite of strong inclination of farmers towards apple, its production is dwindling every year. Besides major diseases and insect/pests, climatic and nutritional factors, parasitic plants have also become a serious problem to sustain/increase apple production in the state. Different species of genus Viscum and other parasitic higher plants have been diagnosed as major flowering parasites of apple with an average incidence of 8-12 per cent. Regular training/pruning of the affected trees with use of Chaubattia paste on the pruned branches accompanied by spray of ethaphon (5%) during dormant stage of the tree is a best possible measure to manage this menace.

The overall performance of a hydrothermal power plant with pumped storage is more cost effective ... more The overall performance of a hydrothermal power plant with pumped storage is more cost effective than its competitive counterparts such as oil and gas turbine-generators. The operation and maintenance of such plants is very much trouble free and excess power can be brought on line with little or no waste of time to meet the needs efficiently of the load fluctuations. The benefits multiply tremendously when hydrothermal power development is viewed as a multipurpose project enterprise also including flood control, navigation, irrigation, water supply, boating, fishing, swimming and water skiing.

European Online Journal of Natural and Social Sciences, 2020

In this study, the real private consumption model for Iran was estimated by applying yearly data ... more In this study, the real private consumption model for Iran was estimated by applying yearly data from 1990 to 2018. The ARDL method is used to assess short-term and long-term relationships between private consumption, labor income, interest rate, wealth, and unemployment rate. According to long-term estimates, income and wealth determine the actual consumption in Iran. However, in the short run, current incomes, wealth, real interest rates, and the unemployment rate are the key determinants of private consumption in Iran. The dynamic of the consumption function shows that all the factors of consumption i.e. real disposable income, wealth, and unemployment rate, real interest rate, have a noteworthy effect on aggregate consumption. The minor and significant coefficient of wealth indicates that the consumption decision is weakly affected by wealth. It provides evidence of the validity of AIH for Iran.

The present investigation was conducted on thirty eight accessions of onion at the experimental f... more The present investigation was conducted on thirty eight accessions of onion at the experimental farm of Central Institute of temperate Horticulture to study the variability and their interrelationship and divergence pattern based on quantitative and qualitative traits during 2009 to 2011. Multivariate analysis was used to classify 38 long day onion accessions. All accessions were grouped into six different clusters. The highest inter cluster distance was observed between IV and V and lowest between II and VI. Based on cluster means the important cluster was I for plant height and percent marketable bulbs cluster IV for mean yield, total yield and equatorial diameter and cluster III for the number of leaves, collar thickness and average bulb weight. Accordingly, parents could be selected for hybridization. Principal component analysis, first two principal component accessions accounted for 59.29% of the variance among 38 accessions. The greater part of the variance was accounted for ...