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4-((4-Chlorophenylsulfonamido)methyl)cyclohexanecarboxylic Acid： Synthesis, Crystal Structure and Biological Activities

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Chinese Journal of Structural Chemistry 2017年第8期36卷 1307-1314页

作者： muhammad Danish RABIA Ayub Butt muhammad Nawaz Tahir muhammad Ashfaq SYEDA Tahira Hafeez muhammad naeem Ahmed HALEEMA Qureshi Department of Chemistry University of Gujrat Gujrat 50700 Pakistan Department of Physics University of Sargodha Sargodha Pakistan Department of Chemistry University of Azad Jammu and Kashmir Muzaffarabad 13100 Pakistan

In this study, a novel 4-（（4-chlorophenylsulfonamido）methyl）cyclohexanecarboxylic acid（C（14）H（18）ClNO4S） was synthesized by the reaction of tranexamic acid and 4-chlororbenzene sulfonyl chloride in basic medium at room temperature. The molecular structure was determined by FT-IR, NMR, elemental analysis and single-crystal X-ray analysis. The compound crystallizes in the monoclinic system, space group P21/c with a = 12.3120（11）, b = 16.5987（19）, c = 7.6873（7）？, β = 90.495（6）o, Z = 4 and V = 1570.9（3）？~3, crystal size（mm） = 0.38 × 0.16 × 0.14 and Rint = 0.045. In this compound, the carboxylic acid A（O（1）/C（1）/C（2）） and the sulfonyl B（O（3）/S（1）/O（4）） moieties are of course planar. The molecules are dimerized due to the O–H…O type of H-bonding with the R22（8） ring motifs. The dimmers are interlinked through C–H…O and N–H…O types of H-bonding. The synthesized compound was screened against four bacterial and two fungal strains and inactive against all strains. Antioxidant activity was checked against DPPH. Enzyme inhibition activity was carried out using three different enzymes and the title compound was more potent α-chymotrypsin inhibitor.

关键词： sulfonamide tranexamic acid 4-chlorobenzenesulfonyl chloride XRD biological applications

Pythagorean m-polar fuzzy topology with TOPSIS approach in exploring most effectual method for curing from COVID-19

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International Journal of Biomathematics 2020年第8期13卷 65-96页

作者： Khalid naeem muhammad Riaz Xindong Peng Deeba Afzal Department of Mathematics&Statistics The University of Lahore Pakistan Department of Mathematics University of the Punjab LahorePakistan School of Information Science and Engineering Shaoguan University Shaoguan 512005 GuangdongP.R.China

The corona virus disease 2019(COVID-19)has emerged as a fatal *** deadly virus has taken the whole world into clutches and many people have embraced death due to this invincible *** death toll is rising with every tick of *** aspiration behind this article is to discover the preventive measure that should be taken to cope with this intangible *** study the prime notions of novel sort of topology accredited Pythagorean m-polar fuzzy topology along with its prime *** slightly amend the well-acknowledged multi-criteria decision analysis tool TOPSIS(Technique for Order of Preference by Similarity to Ideal Solution)to befit the proposed multi-criteria group decision making(MCGDM)problem of exploring the most effective method for curing from COVID-19 employing the proposed model.

关键词： Pythagorean m-polar fuzzy topology COVID-19 MCGDM TOPSIS

Population survey and conservation assessment of the globally threa- tened cheer pheasant （Catreus wallicht） in Jhelum Valley, Azad Kas- hmir, Pakistan

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Zoological Research 2014年第4期35卷 338-345页

作者： muhammad naeem AWAN Hassan ALI David Charles LEE WWF Pakistan Regional Office Azad Kashmir Muzaffarabad Pakistan WWF Pakistan Feroze Pur Road Lahore Pakistan School of Applied Sciences the University of South Wales Pontypridd UK

The cheer pheasant Catreus wallichi is a globally threatened species that inhabits the western Himalayas. Though it is well established that the species is threatened and its numbers declining, updated definitive estimates are lacking, so in 2011, we conducted a survey to assess the density, population size, and threats to the species in Jhelum valley, Azad Kashmir, which holds the largest known population of cheer pheasants in Pakistan. We conducted dawn call count surveys at 17 points clustered in three survey zones of the valley, 11 of which had earlier been used for a 2002-2003 survey of the birds. Over the course of our survey, 113 birds were recorded. Mean density of cheer pheasant in the valley was estimated at 11.8±6.47 pairs per km2, with significant differences in terms of both counts and estimated density of cheer were significantly different across the three survey zones, with the highest in the Chinari region and the lowest, that is the area with no recorded sightings of the pheasants, in Gari Doppata. The total breeding population of cheer pheasants is estimated to be some 2 490 pairs, though this does not consider the actual area of occupancy in the study area. On the whole, more cheer pheasants were recorded in this survey than from the same points in 2002-2003, indicating some success in population growth. Unfortunately, increasing human settlement, fires, livestock grazing, hunting, and the collection of non-timber forest products continue to threaten the population of cheer in the Jhelum valley. To mitigate these potential impacts, some degree of site protection should be required for the conservation of cheer pheasants in Pakistan, and more effective monitoring of the species is clearly needed.

关键词： Abundance Habitat analysis Cheer Pheasant Jhelum valley Pakistan

Effect of Cumulative Nanosecond Laser Pulses on the Plasma Emission Intensity and Surface Morphology of Pt-and Ag-Ion Deposited Silicon

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Plasma Science and Technology 2012年第4期14卷 333-337页

作者： Khurram SIRAJ muhammad Zakria BUTT muhammad KHALEEQ-UR-RAHMAN muhammad shahid RAFIQUE Saima RAFIQUE FAKHAR-UN-NISA Advanced Physics Laboratory Department of PhysicsUniversity of Engineering and Technology

In this work, the laser induced plasma plume characteristics and surface morphology of Pt- and Ag-ion deposited silicon were studied. The deposited silicon was exposed to cumulative laser pulses. The plasma plume images produced by each laser shot were captured through a computer controlled image capturing system and analyzed with image-J software. The integrated optical emission intensity of both samples showed an increasing trend with increasing pulses. Agion deposited silicon showed higher optical emission intensity as compared to Pt-ion deposited silicon, suggesting that more damage occurred to the silicon by Ag ions, which was confirmed by SRIM/TRIM simulations. The surface morphologies of both samples were examined by optical microscope showing thermal, exfoliational and hydrodynamical sputtering processes along with the re-deposition of the material, debris and heat affected zones＇ formation. The crater of Ption deposited silicon was deeper but had less lateral damage than Agion deposited silicon. The novel results clearly indicated that the ion deposited silicon surface produced incubation centers, which led to more absorption of incident light resulting into a higher emission intensity from the plasma plume and deeper crater formation as compared to pure silicon. The approach can be effectively utilized in the laser induced breakdown spectroscopy technique, which endures poor limits of detection.

关键词： ions deposited silicon laser irradiation plasma plume emission intensity,crater formation

Water extraction kinetics of metals, arsenic and dissolved organic carbon from industrial contaminated poplar leaves

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Journal of Environmental Sciences 2013年第12期25卷 2451-2459页

作者： muhammad shahid Tiantian Xiong Maryse Castrec-Rouelle Tibo Leveque Camille Dumat Department of Environmental Sciences COMSATS Institute of Information Technology University of Toulouse INP-ENSATAv of Agrobiopole UMR 5245 CNRS-INP-UPS EcoLab UMR 7618 BioEmco UPMC-Paris 6

In industrial areas, tree leaves contaminated by metals and metalloids could constitute a secondary source of pollutants. In the present study, water extraction kinetics of inorganic elements （IE： Pb, Zn, Cd, As, Fe and Mn）, dissolved organic carbon, pH and biological activity were studied for industrial contaminated poplar leaves. Moreover, the distribution of the IE through the size fractions of the associated top soil was measured. High quantities ofMn, Zn and As and polysaccharides were released in the solution from the strongly contaminated leaves. The kinetic of release varied with time and metal type. The solution pH decreased while dissolved organic contents increased with time after 30 days. Therefore, these contaminated leaves could constitute a source of more available organic metals and metalloids than the initial inorganic process particles. However, the distribution of the IE through the size fractions of the top soil suggested that a great part of the released IE was adsorbed, reducing in consequence their transfers and bioavailability. It＇s concluded that mobility/boioavailability and speciation of metals and metalloids released from the decomposition of polluted tree leaves depends on soil characteristics, pollutant type and litter composition, with consequences for environmental risk assessment.

关键词： metals and metalloids dissolved organic carbon litter decomposition kinetics speciation water extraction

Emergency Decision-Making Based on q-Rung Orthopair Fuzzy Rough Aggregation Information

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Computers, Materials & Continua 2021年第12期69卷 4077-4094页

作者： Ahmed B.Khoshaim Saleem Abdullah Shahzaib Ashraf muhammad naeem Department of Mechanical Engineering King Abdulaziz UniversityJeddahSaudi Arabia Department of Mathematics Abdul Wali Khan University MardanMardan23200Pakistan Department of Mathematics and Statistics Bacha Khan UniversityCharsadda24420Pakistan Deanship of Combined First Year Umm Al-Qura UniversityMakkahSaudi Arabia

With the frequent occurrences of emergency events,emergency decision making(EDM)plays an increasingly significant role in coping with such situations and has become an important and challenging research area in recent *** is essential for decision makers to make reliable and reasonable emergency decisions within a short span of time,since inappropriate decisions may result in enormous economic losses and social *** handle emergency effectively and quickly,this paper proposes a new EDM method based on the novel concept of q-rung orthopair fuzzy rough(q-ROPR)set.A novel list of q-ROFR aggregation information,detailed description of the fundamental characteristics of the developed aggregation operators and the q-ROFR entropy measure that determine the unknown weight information of decision makers as well as the criteria weights are *** an algorithm is given to tackle the uncertain scenario in emergency to give reliable and reasonable emergency *** using proposed list of q-ROFR aggregation information all emergency alternatives are ranked to get the optimal *** this,the q-ROFR entropy measure method is used to determine criteria and experts’weights objectively in the EDM ***,through an illustrative example of COVID-19 analysis is compared with existing EDM *** results verify the effectiveness and practicability of the proposed methodology.

关键词： q-rung orthopair fuzzy rough set q-ROFR entropy measure aggregation information emergency decision making

An Efficient Proxy Blind Signcryption Scheme for IoT

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Computers, Materials & Continua 2022年第3期70卷 4293-4306页

作者： Aamer Khan Insaf Ullah Fahad Algarni muhammad naeem M.Irfan Uddin muhammad Asghar Khan Department of Information Technology Abbottabad University of Science and TechnologyAbbotabadPakistan Hamdard Institute of Engineering and Technology Islamabad44000Pakistan College of Computing and Information Technology University of BishaBishaSaudi Arabia Institute of Computing Kohat University of Science and TechnologyKohatPakistan

Recent years have witnessed growing scientific research interest in the Internet of Things(IoT)technologies,which supports the development of a variety of applications such as health care,Industry 4.0,agriculture,ecological data management,and other various *** utilizes the Internet as a prime medium of communication for both single documents as well as multi-digital ***,due to the wide-open nature of the Internet,it is important to ensure the anonymity,untraceably,confidentiality,and unforgeability of communication with efficient computational complexity and low *** designed a light weight and secure proxy blind signcryption for multi-digital messages based on a hyperelliptic curve(HEC).Our results outperform the available schemes in terms of computational cost and communication *** designed scheme also has the desired authentication,unforgeability of warrants and/or plaintext,confidentiality,integrity,and blindness,***,our scheme is more suitable for devices with low computation power such as mobiles and tablets.

关键词： Proxy signcryption multi-digital-documents proxy blind signcryption hyperelliptic curve IoT

Source Sector Contributions to Aerosol Levels in Pakistan

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Atmospheric and Oceanic Science Letters 2015年第5期8卷 308-313页

作者： muhammad Zeeshaan shahid LIAO Hong QIU Yu-Lu Imran shahid State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC) Institute of Atmospheric Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Institute of Space Technology

Urban air pollution in Pakistan is a serious challenge and it causes significant damage to human health and ecosystems. This paper presents a modelling study using the Weather Research and Forecasting Model coupled with Chemistry(WRF-Chem) to simulate the spatial distributions and temporal variations of aerosol concentrations over Pakistan, focusing on contributions of domestic emission sectors(transport, industry, residential, and energy) to mass concentrations of sulfate(SO2–4), nitrate(NO–3), ammonium(NH+4), black carbon(BC), and organic carbon(OC) during the months of January, April, July, and October in 2010. Sensitivity studies indicate that, averaged over January, April, July, and October of 2010, energy and industry sectors have the largest contributions to SO2–4 concentrations, each of which contributes about 10%?20% to SO2– 4over the polluted eastern Pakistan. The contributions from residential and transport sectors to NO–3 concentrations reach 40%?50% in central Pakistan. The residential sector has the highest contribution of 50%–80% to BC and OC loading in northeastern and southern Pakistan. Examination of sector contributions to aerosol levels in Lahore, the most polluted city in Pakistan, suggests that reductions in emissions in the residential sector should be an efficient measure for improving particulate matter air quality in this region.

关键词： WRF-Chem aerosols Pakistan

Structural,electrical,dielectric and magnetic properties of Mn-Nd substituted CoFeO3 nano sized multiferroics

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Progress in Natural Science:Materials International 2016年第4期26卷 325-333页

作者： Abdul Aziz E.Ahmed muhammad naeem Ashiq muhammad Azhar Khan Nazia Karamat Irshad Ali Department of Physics Bahauddin Zakariya University Institute of Chemical Sciences Bahauddin Zakariya University Department of Physics The Islamia University of Bahawalpur Institute of Chemical Sciences Bahauddin Zakariya University

A series of Mn x Co1-xFe1-yNdyO3（where x=0.0–1.0 & y=0.0–0.1） multiferroic nanocrystals was synthesized via sol-gel auto-combustion technique. The structure was confirmed by X-ray diffraction（XRD）while morphology was investigated by scanning electron microscopy（SEM）. The electrical resistivity was observed to increase from 2.14 * 10～7 to 8.77 * 10～9 Ω-cm and activation energy was found to increase from 0.64 to 0.75 e V, while the drift mobility decreased from 4.75 * 10-13to 1.27 * 10-15cm2V-1S-1by the substitution of Mn and Nd contents. The dielectric constant, dielectric loss and dielectric loss factor decrease with frequency and Mn-Nd contents. The saturation magnetization was increased from 34 to 70 emu g-1while the coercivity decreased from 705 to 262 Oe with the increase of *** increase in electrical resistivity and saturation magnetization while decrease in dielectric parameters and coercivity make these nanomaterials suitable for applications in microwave devices and longitudinal magnetic recording media.

关键词： Nanostructured materials XRD Dielectric properties Electrical properties Magnetic properties