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Density Transition Based Self-Focusing of cosh-Gaussian Laser Beam in Plasma with Linear Absorption

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Communications in Theoretical Physics 2015年第7期64卷 103-107页

作者： Niti Kant manzoor ahmad wani Department of Physics Lovely Professional University

Density transition based self-focusing of cosh-Gaussian laser beam in plasma with linear absorption has been studied. The field distribution in the plasma is expressed in terms of beam width parameter, decentered parameter,and linear absorption coefficient. The differential equation for the beam width parameter is solved by following Wentzel–Kramers–Brillouin(WKB) and paraxial approximation through parabolic wave equation approach. The behaviour of beam width parameter with dimensionless distance of propagation is studied at optimum values of plasma density,decentered parameter and with different absorption levels in the medium. The results reveal that these parameters can affect the self-focusing significantly.

关键词： self-focusing cosh-Gaussian beam plasma density ra

Relativistic Self-Focusing of Hermite-cosine-Gaussian Laser Beam in Collisionless Plasma with Exponential Density Transition

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Communications in Theoretical Physics 2019年第6期71卷 736-740页

作者： Vishal Thakur manzoor ahmad wani Niti Kant Department of Physics Lovely Professional UniversityPhagwara-144411PunjabIndia Govt.Higher Secondary School Waterhail Budgam-191111J&KIndia

This work reveals an exploration of self-focusing of Hermite-cosine-Gaussian laser beam in a collisionless plasma under relativistic nonlinearity. Self-focusing along with self-trapping of Hermite-cosine-Gaussian laser beam are analyzed for different values of laser intensity, plasma density, and decentered parameters. Mathematical analysis displays that these parameters play a major role in achieving the stronger and earlier self-focusing. Further, a comparative study between self-focusing of Hermite-cosine-Gaussian laser beam with and without exponential density ramp profile is introduced. Plasma density transition with exponential profile is found to be more effective in order to have stronger self-focusing. The present analysis may lead to very useful applications in the field of efficient harmonic generation, laser driven fusion etc.

关键词： self-focusing collisionless plasma exponential plasma density ramp Hermite-cosine-Gaussian laser beam

Generalized*-Lie Higher Derivable Mappings on*-Rings

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Algebra Colloquium 2020年第3期27卷 415-432页

作者： Mohammad Ashraf Mohd Shuaib Akhtar Bilal ahmad wani Department of Mathematics Aligarh Muslim UniversityAligarh 202002India

Let R be a*-ring with the center Z(R)and N be the set of nonnegative *** this paper,it is shown that if R contains a nontrivial self-adjoint idempotent which admits a generalized Lie higher derivable mapping△={G_(n)}_(n∈N)associated with a*-Lie higher derivable mapping L={L_(n)}_(n∈N),then for any X,Y in R and for each n in N there exists an element Z_(X,Y)(depending on X and Y)in the center Z(R)such that G_(n)(X+Y)=G_(n)(X)+G_(n)(Y)+Z_(X,Y).

关键词： rings derivations *-Lie higher derivable mappings generalized*-Lie higher derivable mappings

Geochemistry of metasedimentary rocks of the Sonakhan and Mahakoshal greenstone belts,Central India:Implications for paleoweathering,paleogeography and mechanisms of greenstone belt development

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Acta Geochimica 2022年第1期41卷 64-83页

作者： Hamidullah wani M.E.A.Mondal Iftikhar ahmad Department of Geology Government Degree College for Women PulwamaJammu and Kashmir 192301India Department of Geology Aligarh Muslim UniversityAligarhUttar Pradesh 202002India

A comparative study of the Precambrian Sonakhan(SGB)and Mahakoshal(MGB)greenstones belts of Central India has been undertaken to decipher their provenance,paleoweathering,paleogeography,and *** compared to the Upper Continental Crust(UCC),the MGB samples are enriched while the SGB samples are depleted in mafic elements indicating the presence of mafic rocks in the source of the *** is complemented by the Ni–Cr *** REE concentrations,LREE fractionated patterns and negative Eu anomalies of the MGB and SGB samples indicate derivation of sediments from a highly fractionated granitic *** MGB samples also contain the geochemical signature of mafic rocks,it is,therefore proposed that the MGB clastic load were derived from two sources(mafic+felsic)with arc *** is attested by Cr and Zr relationships,and LILE enrichment,and HFSE *** features suggest that the SGB developed as autochthonous while the MGB developed as an allochthonous *** chemical alteration indices such as chemical index of alteration(CIA),plagioclase index of alteration(PIA),and index of compositional variability for MGB samples indicate that they were dominantly derived as the first cycle(with minor recycled)sediments from bimodal sources(dominantly continental arcs)by intense chemical weathering as compared to the SGB samples,which were derived from felsic sources(dominantly cratonic rocks),and partly by recycling through a low chemical *** CIA and PIA values of the samples reveal a change in the climatic conditions from Late Archean to Late *** change is interpreted in terms of migration of the Indian plate from high latitudes in the Late Archean to lower latitudes during the Late *** is consistent with the paleomagnetic data that placed India in the configuration of 2.45 Ga Ur and 1.78 Ga Columbia supercontinents.

关键词： Central Indian Shield Sonakhan and Mahakoshal greenstone belts Paleoweathering and paleogeography Greenstone belt development

Nanoencapsulation of pomegranate peel extract using maltodextrin and whey protein ***,release behaviour and antioxidant potential during simulated invitro digestion

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Food Bioscience 2022年第6期50卷 2108-2119页

作者： Rubiya Rashid Sajad Mohd wani Shaziya manzoor F.A.Masoodi Aayeena Altaf Department of Food Science and Technology University of KashmirSrinagarJammu and KashmirIndia Division of Food Science and Technology Sher-e- Kashmir University of Agricultural Sciences and Technology-KashmirSrinagarJammu and KashmirIndia Department of Food Technology Jamia HamdardNew DelhiIndia

In the present experiment nanoencapsulation of pomegranate peel extract using maltodextrin(MD),whey protein isolate(WPI)and combination of maltodextrin and whey protein isolate(1:1)(MD/WPI)was carried *** followed by ultrasonication was performed to reduce the particle size to nanoscale range and improve functional properties of bioactive *** was then done to obtain the final powder samples with encapsulation efficiency in the range of 85 to 96%.When comparing release behaviour of nanoencapsulated pomegranate peel extract with the free extract,it was revealed that encapsulated ones show controlled release of bioactive core while as in free extract,the bioactives were released more in the gastric phase than the targeted intestinal *** antiproliferative activity was also performed using different cancer cell lines and it was found that nanoencapsulated samples decrease the%proliferation in better way than the free extract with higher efficiency in the samples encapsulated by MD/WPI.

关键词： Antiproliferation Invitro digestion Bioactive compounds Antioxidant stability

Improving oxidative stability of edible oils with nanoencapsulated orange peel extract powder during accelerated shelf life storage

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Food Bioscience 2022年第5期49卷 1213-1224页

作者： Rubiya Rashid Sajad Mohd wani Shaziya manzoor F.A.Masoodi Mohd Masarat Dar Department of Food Science and Technology University of KashmirSrinagarJammu and KashmirIndia Division of Food Science and Technology Sher-e-Kashmir University of Agricultural Sciences and Technology-KashmirSrinagarJammu and KashmirIndia

Nanoemulsion systems were employed to encapsulate the orange peel extract obtained from conventional maceration and novel ultrasound assisted extraction *** wall materials maltodextrin(MD),whey protein isolate(WPI)and complex maltodextrin and whey protein isolate(MD/WPI)(1:1)were used in order to enhance the nanoemulsion stability,protect the bioactive core from degradation and control the release of bioactive *** freeze drying technology was then used to obtain powder encapsulates with encapsulation efficiency and loading capacity of MD,WPI and MD/WPI as 89.3,91.2,95.6%and 95.3,94.4 and 93.1%respectively which depicts that encapsulation has taken place *** emulsions obtained were in nanoscale range with average hydrodynamic diameter as 105.0,201.82,215.12 and 298.82 for primary W/O emulsion,MD,WPI and MD/WPI stabilised emulsions *** encapsulates were then incorporated in soyabean and mustard oil at different concentration 100,200 and 300 ppm and compared with free extract and synthetic antioxidant BHT to enhance storage life by controlling the oxidative changes during accelerated shelf life storage at 60o C for 24 *** results obtained concluded that nanoencapsulated extracts performed better in prevention of oxidative indices than the free ***,nanocapsules encapsulated by MD/WPI exhibited higher protection of oils during storage than the maltodextrin and whey protein isolate.

关键词： Encapsulation Orange peel Oxidative stability Waste management

Enhanced photocatalytic degradation of organic dyes from aqueous environment using neodymium-doped mesoporous layered double hydroxide

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Journal of Rare Earths 2022年第10期40卷 1554-1563页

作者： Ajaz ahmad wani Amjad Mumtaz Khan Yahiya Kadaf Manea Mansour A.S.Salem Department of Chemistry Aligarh Muslim UniversityAMUAligarh202002India

Neodymium-doped Zn-Al layered double hydroxide(Nd/Zn-Al LDH) with excellent photocatalytic activity was prepared by a one-step hydrothermal method. The morphology and physicochemical properties of as-synthesized photocatalysts were well analyzed by Fourier transform infrared(FT-IR), X-ray diffraction(XRD), scanning electron microscopy(SEM), transmission electron microscopy(TEM), photoluminescence(PL), UV-diffuse reflectance spectroscopy(UV-DRS), and Brunauer-Emmett-Teller(BET)surface analysis. Doping Nd^(3+) into Zn-Al LDH enhances the overall catalytic activity of the nanocomposite, like better electron-hole pair separation, increase in interplanar distance, fast electron transfer, and large surface area. The as-prepared nanocomposite shows excellent degradation of three different dyes under visible light irradiation. The degradation efficiency of these dyes follows the order of Congo red > rose Bengal > fast green. Furthermore, liquid chromatography-mass spectrometry(LC-MS)was employed to propose a possible photocatalytic degradation pathway for Congo Red and Rose Bengal dyes by Nd/Zn-Al LDH. With the help of radical trapping experiments, it is revealed that during the photoexcitation process, the primary reactive intermediates are hydroxyl radicals.

关键词： Organic pollutants Degradation Multifunctional Mesoporous LC-MS Rare earths

Pullulan production by Aureobasidium pullulans MTCC 1991 from apple pomace and its characterization

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Food Bioscience 2023年第1期51卷 1380-1387页

作者： Shoib Mohmad wani F.A.Masoodi Sajad ahmad Mir F.A.Khanday Department of Biotechnology University of KashmirHazratbal SrinagarJ&K190006India Department of Food Science&Technology University of KashmirHazratbal SrinagarJ&K190006India

Apple pomace,a by-product of the apple juice processing industry,is significant agro-based waste in the Union Territory of Jammu&Kashmir,India.A considerable amount of apple is processed for juice production,resulting in a surplus of apple pomace,which is generally *** study utilized apple pomace as a substrate matrix for producing pullulan by applying Aureobasidium pullulans MTCC ***-state fermentation was done at a lab scale in Erlenmeyer flasks to produce this *** suitable conditions for solid-state fermentation of apple pomace were:a solid-liquid ratio of 1:4,inoculum volume of 3 mL,pH 6 and incubation time of 14 days.A yield of 42 mg/g dw was obtained in the control sample without adding any other nutrients or *** addition of yeast extract at a concentration of 1%(w/w)and sucrose(5%w/w)significantly(p<0.05)increased the yield to 62 mg/g dw and 75 mg/g dw,*** purified pullulan had similar characteristics to that of standard pullulan,as confirmed by ATR-FTIR,H NMR and TLC *** production from apple pomace can be a better way to utilize this by-product from the apple juice *** will be a cost-effective technique for pullulan production as an inexpensive substrate and an environmentally friendly approach are also used.

关键词： Biopolymer Microbial polysaccharide Agro-based waste Solid state fermentation Waste utilization

AI-Driven Pattern Recognition in Medicinal Plants: A Comprehensive Review and Comparative Analysis

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Computers, Materials & Continua 2024年第11期81卷 2077-2131页

作者： Mohd Asif Hajam Tasleem Arif Akib Mohi Ud Din Khanday Mudasir ahmad wani Muhammad Asim Department of Information Technology Baba Ghulam Shah Badshah UniversityRajouriJammu and Kashmir185234India Department of Computer Science Samarkand International University of TechnologySamarkand141500Uzbekistan EIAS Data Science Lab College of Computer and Information SciencesPrince Sultan UniversityRiyadh11586Saudi Arabia

The pharmaceutical industry increasingly values medicinal plants due to their perceived safety and costeffectiveness compared to modern *** the extensive history of medicinal plant usage,various plant parts,including flowers,leaves,and roots,have been acknowledged for their healing properties and employed in plant *** images,however,stand out as the preferred and easily accessible source of *** plant identification by plant taxonomists is intricate,time-consuming,and prone to errors,relying heavily on human *** intelligence(AI)techniques offer a solution by automating plant recognition *** study thoroughly examines cutting-edge AI approaches for leaf image-based plant identification,drawing insights from literature across renowned *** paper critically summarizes relevant literature based on AI algorithms,extracted features,and results ***,it analyzes extensively used datasets in automated plant classification *** also offers deep insights into implemented techniques and methods employed for medicinal plant ***,this rigorous review study discusses opportunities and challenges in employing these AI-based ***,in-depth statistical findings and lessons learned from this survey are highlighted with novel research areas with the aim of offering insights to the readers and motivating new research *** review is expected to serve as a foundational resource for future researchers in the field of AI-based identification of medicinal plants.

关键词： Pattern recognition artificial intelligence machine learning deep learning image processing plant leaf identification