Search results for: Muhammad Qasim

Items from 1 to 20 out of 163 results

article

Influence of thiopheneyl‐based twisted backbone on the properties of α‐diimine nickel catalysts in ethylene polymerization

Daohong Liao, Shabnam Behzadi, Changwen Hong, Chen Zou, more

Applied Organometallic Chemistry > 35 > 11 > n/a - n/a

The modification of ligand sterics has become a prevalent strategy to tune the properties of α‐diimine‐type nickel catalysts. The majority of the works in this field focus on the modifications of the aniline moiety. In this contribution, we decide to explore the influence of backbone structures. Specifically, nickel complexes bearing 2,5‐dimethyl‐thien‐3‐yl and 2‐methyl‐5‐phenylthien‐3‐yl backbone...

article

Comparative palynology and taxonomic implication of Jasminum L. (Oleaceae) species from Pakistan on the bases of scanning electron microscopy

Naeem Akhtar, Muhammad Qasim Hayat, Ishfaq Ahmed Hafiz, Nadeem Akhtar Abbasi, more

Microscopy Research and Technique > 84 > 10 > 2325 - 2336

Jasminum L. is the largest genus containing ~200 species found wild mostly in the tropical regions of the world. The comparative palynological study of nine Pakistani Jasminum species with SEM showed zonocolpus, trilobate, and tricolpus pollen types with simple endocolpus apertures which are plesiomorphic and conserved in the Jasminum species. The equatorial pollen view was prolate, subprolate, and...

article

Integrated provenance and tectonic implications of the Cretaceous–Palaeocene clastic sequence, Changla Gali, Lesser Himalaya, Pakistan

Muhammad Qasim, Jalil Ahmad, Lin Ding, Javed Iqbal Tanoli, more

Geological Journal > 56 > 9 > 4747 - 4759

This study documented the field relationship and integrated provenance of a clastic sequence exposed at the Mesozoic–Cenozoic boundary located in Changla Gali section, Lesser Himalaya, Pakistan, to provide an insight into Cretaceous tectonics of the northern Indian margin. This boundary sequence is represented by the Early Palaeocene Hangu Formation, which consists of shales in the lower part and...

article

Validation of ROS1 by immunohistochemistry against fluorescent in situ hybridisation on cytology and small biopsy samples in a large teaching hospital

Nadira Narine, Andrew Wallace, Jonathan Dore, Simon O’Leary‐Jackson, more

Cytopathology > 32 > 5 > 621 - 630

Objective Rearranged ROS1, present in 1%‐2% of non‐small cell lung cancer (NSCLC) patients, usually young, never or light smokers, is assessed by fluorescence in situ hybridization (FISH) to determine eligibility for tyrosine kinase inhibitors (TKI). Immunohistochemistry (IHC) for the protein product of ROS1 rearrangement, a cost‐effective alternative, is validated on cytology and small biopsy samples...

article

A framework infrageneric classification of Carex (Cyperaceae) and its organizing principles

Group, Eric H. Roalson, Pedro Jiménez‐Mejías, Andrew L. Hipp, more

Journal of Systematics and Evolution > 59 > 4 > 726 - 762

Phylogenetic studies of Carex L. (Cyperaceae) have consistently demonstrated that most subgenera and sections are para‐ or polyphyletic. Yet, taxonomists continue to use subgenera and sections in Carex classification. Why? The Global Carex Group (GCG) here takes the position that the historical and continued use of subgenera and sections serves to (i) organize our understanding of lineages in Carex...

article

Prevalence and associated risk factors of Shigella flexneri isolated from drinking water and retail raw foods in Peshawar, Pakistan

Iqbal Nisa, Muhammad Qasim, Arnold Driessen, Jeroen Nijland, more

Journal of Food Science > 86 > 6 > 2579 - 2589

Abstract This study was designed to investigate the prevalence and associated risk factors of Shigella flexneri isolated from drinking water and retail raw food samples in Peshawar, Pakistan. A total of 1,020 different samples were collected from various areas of Peshawar between January 2016 and May 2017, followed by identification of S. flexneri through biochemical, serological, and 16S rRNA gene...

article

Preparation of Metal Oxide‐based Oxygen Carriers Supported with CeO₂ and γ‐Al₂O₃ for Chemical Looping Combustion

Muhammad Qasim, Muhammad Ayoub, Aqsha Aqsha, Muhammad Zulfiqar

Chemical Engineering & Technology > 44 > 4 > 782 - 787

The development of efficient oxygen carriers (OCs) in chemical looping combustion (CLC) exhibited tremendous achievement considering inherent CO₂ capture. The selectivity of CO₂ in the CLC process depends on the performance of employed OCs during multiple redox cycles. Different types of OCs were prepared, including 5wt%Ni/5wt%Ce/γ‐Al₂O₃, 5wt%La/5wt%Ce/γ‐Al₂O₃, and 5wt%Pr/5wt%Ce/γ‐Al₂O₃, using the...

article

Automated design for recognition of blood cells diseases from hematopathology using classical features selection and ELM

Muhammad Attique Khan, Muhammad Qasim, Hafiz Muhammad Junaid Lodhi, Muhammad Nazir, more

Microscopy Research and Technique > 84 > 2 > 202 - 216

In the human immune system, the white blood cells (WBC) creates bone and lymphoid masses. These cells defend the human body toward several infections, such as fungi and bacteria. The popular WBC types are Eosinophils, Lymphocytes, Neutrophils, and Monocytes, which are manually diagnosis by the experts. The manual diagnosis process is complicated and time‐consuming; therefore, an automated system is...

article

Stimuli‐Responsive Dynamic Metaholographic Displays with Designer Liquid Crystal Modulators

Inki Kim, Muhammad Afnan Ansari, Muhammad Qasim Mehmood, Won‐Sik Kim, more

Advanced Materials > 32 > 50 > n/a - n/a

Flat optics, realized by the artificially created 2D material platform called optical metasurfaces, is currently undergoing a science‐to‐technology transition. However, “real‐time” active operations of such flat optical devices remain yet unresolved. Here, liquid crystals (LCs)‐integrated metaholograms for ultracompact dynamic holographic displays are proposed. The anisotropic nature of the LCs allows...

article

Meta‐Holographic Displays: Stimuli‐Responsive Dynamic Metaholographic Displays with Designer Liquid Crystal Modulators (Adv. Mater. 50/2020)

Inki Kim, Muhammad Afnan Ansari, Muhammad Qasim Mehmood, Won‐Sik Kim, more

Advanced Materials > 32 > 50 > n/a - n/a

A touch‐responsive meta‐holographic display, which is promising for interactive holographic displays with touch sensing or motion recognition is presented by Young‐Ki Kim, Junsuk Rho, and co‐workers in article number 2004664. According to an applied surface pressure with a gentle finger touch, the floating holographic images encoded in a metasurface can be switched in real‐time. The liquid‐crystal‐integrated...

article

Application of Perov type fixed point results to complex partial differential equations

Ishak Altun, Muhammad Qasim

Mathematical Methods in the Applied Sciences > 44 > 2 > 2059 - 2070

In this paper, we characterize a new generalization of Perov fixed point result via Λ‐admissibility and Ψ‐contractivity on vector‐valued metric space and provide a comparative example. Then we investigate the existence of solution of a complex partial differential equation of the form, via obtained new fixed point results under suitable conditions.

article

Fabrication of polycaprolactone nanofibrous membrane‐embedded microfluidic device for water filtration

Muhammad Qasim, Duong Duy Duong, Ji Yi Lee, Nae Yoon Lee

Journal of Applied Polymer Science > 137 > 40 > n/a - n/a

In this study, we fabricated a plastic microfluidic device embedded with polycaprolactone (PCL) nanofibrous membrane for use as a filter for the removal of bacteria from contaminated water. A microfluidic device was fabricated by sandwiching an electrospun PCL nanofibrous membrane between two layers of poly(methyl methacrylate) (PMMA) substrates. On the top PMMA layer, a serpentine microchannel was...

article

Early Cretaceous to Eocene magmatic records in Ladakh arc: Constraints from U–Pb ages of Deosai volcanics, northern Pakistan

Umair Khan Jadoon, Lin Ding, Upendra Baral, Muhammad Qasim

Geological Journal > 55 > 7 > 5384 - 5397

This research provides a detailed U–Pb geochronological record of Deosai volcanics in the western Himalaya. The volcanics comprise basalt, andesite, dacite, and rhyolite and are part of the Kohistan–Ladakh arc, exposed east of the Nanga Parbat–Haramosh Massif. Based on the U–Pb ages, this volcanic suite is classified into three chronostratigraphic units: (a) Chota Pani volcanics, (b) Shatung Nala...

article

Does financial availability sustain financial, innovative, and environmental performance? Relation via opportunity recognition

Aasma Memon, Zhang Yong An, Muhammad Qasim Memon

Corporate Social Responsibility and Environmental Management > 27 > 2 > 562 - 575

Traditionally, firms tend to incline toward financial performance and profitability to surge shareholder's wealth. In the modern day, in addition to financial performance, innovative and environmental performance has also become a central effort. However, all firms are not flourished in the achievement of financial, innovative, and environmental performance, particularly small‐ and medium‐sized enterprises...

article

Ultrasound-assisted forward osmosis desalination using inorganic draw solutes

Muhammad Qasim, Faisal W. Khudhur, Ahmed Aidan, Naif A. Darwish

Ultrasonics Sonochemistry > 2020 > 61 > C

Internal concentration polarization (ICP) represents a serious challenge in forward osmosis (FO) desalination since it causes a significant decline in the water flux across the membrane. Mitigation of ICP is cumbersome since the phenomenon occurs within the membrane porous support layer and mitigation procedures such as inducing turbulence or changing the hydrodynamic conditions tend to be ineffective...

article

Performance of Asar and Genç and Huang and Yang’s Two-Parameter Estimation Methods for the Gamma Regression Model

Muhammad Amin, Muhammad Qasim, Muhammad Amanullah

Iranian Journal of Science and Technology, Transactions A: Science > 2019 > 43 > 6 > 2951-2963

This study assesses the performance of two-parameter estimation methods to combat multicollinearity in the Gamma regression model. We derived optimal values for two-parameter estimation methods in the Gamma regression model. Furthermore, we proposed some estimation methods to estimate the shrinkage parameters and these methods improve the efficiency of the two-parameter estimator. We compare the performance...

article

In vitro induction of auto-allotetraploid in a newly developed wild rice line from Oryza alta Swallen

Liusheng Zhang, Fimanekeni Ndaitavela Shivute, Muhammad Qasim Shahid, Nabieu Kamara, more

Plant Cell, Tissue and Organ Culture (PCTOC) > 2019 > 139 > 3 > 577-587

Oryza alta Swallen is an important germplasm for rice resistance breeding; however, its CCDD genome (2n = 48) resulted in low crossability when the wild rice was crossed with O. sativa and restricted the success of transferring the desirable traits into cultivated rice. Induction of polyploidy is an efficient way for overcoming the low crossability among different species. A new O. alta line, Huaye...

article

Studies on antioxidant, hepatoprotective, and vasculoprotective potential of Viola odorata and Wrightia tinctoria

Humaira Jamshed, Hasan Salman Siddiqi, Anwar‐ul‐Hassan Gilani, Jamshed Arslan, more

Phytotherapy Research > 33 > 9 > 2310 - 2318

We have reported the antidyslipidemic, antihypertensive, and Ca⁺⁺ channel blocking activities of Viola odorata (VO) and Wrightia tinctoria (WT). This study extends our understanding of their therapeutic potential by exploring the effects on biomarkers of hepatic and vascular dysfunction together with phytochemical standardization and antioxidant potential. Total phenolic compounds, total flavonoids...

article

Enhancement of epigenetic reprogramming status of porcine cloned embryos with zebularine, a DNA methyltransferase inhibitor

Anukul Taweechaipaisankul, Geon A Kim, Jun‐Xue Jin, Sanghoon Lee, more

Molecular Reproduction and Development > 86 > 8 > 1013 - 1022

Aberrant epigenetic reprogramming is known to be a major cause of inefficient somatic cell nuclear transfer (SCNT) in pigs, and use of epigenetic modification agents, such as DNA methyltransferase inhibitors (DNMTis), is a promising approach for enhancing SCNT efficacy. Here, we attempted to find the optimal condition of zebularine (Zb), a DNMTi, treatment on porcine SCNT embryos during in vitro culture...

article

Development of EST-based SSR and SNP markers in Gastrodia elata (herbal medicine) by sequencing, de novo assembly and annotation of the transcriptome

Yunsheng Wang, Muhammad Qasim Shahid, Fozia Ghouri, Sezai Ercişli, more

00003 Biotech > 2019 > 9 > 8 > 1-10

Tianma (Gastrodia elata Blume) has unique biological characteristics and high medicinal value. The wild resource of G. elata is being overutilized and should be conserved as it is already included in the list of endangered species in China. The population size of cultivated G. elata is small because of domestication bottleneck. Therefore, it is of utmost importance to evolve high-quality varieties...

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INFONA - science communication portal

Search results for: Muhammad Qasim

Influence of thiopheneyl‐based twisted backbone on the properties of α‐diimine nickel catalysts in ethylene polymerization

Comparative palynology and taxonomic implication of Jasminum L. (Oleaceae) species from Pakistan on the bases of scanning electron microscopy

Integrated provenance and tectonic implications of the Cretaceous–Palaeocene clastic sequence, Changla Gali, Lesser Himalaya, Pakistan

Validation of ROS1 by immunohistochemistry against fluorescent in situ hybridisation on cytology and small biopsy samples in a large teaching hospital

A framework infrageneric classification of Carex (Cyperaceae) and its organizing principles

Prevalence and associated risk factors of Shigella flexneri isolated from drinking water and retail raw foods in Peshawar, Pakistan

Preparation of Metal Oxide‐based Oxygen Carriers Supported with CeO₂ and γ‐Al₂O₃ for Chemical Looping Combustion

Automated design for recognition of blood cells diseases from hematopathology using classical features selection and ELM

Stimuli‐Responsive Dynamic Metaholographic Displays with Designer Liquid Crystal Modulators

Meta‐Holographic Displays: Stimuli‐Responsive Dynamic Metaholographic Displays with Designer Liquid Crystal Modulators (Adv. Mater. 50/2020)

Application of Perov type fixed point results to complex partial differential equations

Fabrication of polycaprolactone nanofibrous membrane‐embedded microfluidic device for water filtration

Early Cretaceous to Eocene magmatic records in Ladakh arc: Constraints from U–Pb ages of Deosai volcanics, northern Pakistan

Does financial availability sustain financial, innovative, and environmental performance? Relation via opportunity recognition

Ultrasound-assisted forward osmosis desalination using inorganic draw solutes

Performance of Asar and Genç and Huang and Yang’s Two-Parameter Estimation Methods for the Gamma Regression Model

In vitro induction of auto-allotetraploid in a newly developed wild rice line from Oryza alta Swallen

Studies on antioxidant, hepatoprotective, and vasculoprotective potential of Viola odorata and Wrightia tinctoria

Enhancement of epigenetic reprogramming status of porcine cloned embryos with zebularine, a DNA methyltransferase inhibitor

Development of EST-based SSR and SNP markers in Gastrodia elata (herbal medicine) by sequencing, de novo assembly and annotation of the transcriptome

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