|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Systematic study of Ce^(3+) on the structural and magnetic properties of Cu nanosized ferrites for potential applications显示文摘Ce^(3+) substituted Cu-spinel nanoferrites CuCe_xFe_(2-x)O_4(x=0.00, 0.02, 0.04, 0.06, 0.08 and 0.10) were synthesized via sol-gel self-combustion hybrid route. Single phase spinel ferrite of Cu nanoferrites were examined using X-ray diffraction(XRD) analysis whereas the multiphase structure was observed as Ce contents increased from x=0.06. Field emission scanning electron microscopy(FESEM), Thermogravimetric and differential thermal analysis(TGA and DTA) and Fourier transform infrared spectroscopy(FTIR) were used to find out the morphology phase and metal stretching vibrations of Ce^(3+) substituted nanocrystalline ferrites. The crystallite size was increased and found in the range of 25-91 nm. The agglomerations in Cu ferrite samples increase as the Ce^(3+) concentration increases. The magnetic properties such as remanence, saturation magnetization, coercivity, Bohr magneton and magnetocrystalline anisotropy constant(K) were determined using M-H loops recorded from a vibrating sample magnetometer(VSM). Saturation magnetization, remanence and coercivity are increased as the Ce^(3+)contents increase in Cu nanocrystalline samples. Moreover, law of approach to saturation(LoA) was used to calculate the maximum value of saturation for Ce-doped Cu nanoferrites. The soft magnetic behaviour of the Cu nanoferrite is observed as compared to the samples substituted with the increased Ce contents in Cu nanocrystalline ferrite. Bohr magneton and magnetocrystalline anisotropy are found to increase with the substitution of rare earth Ce^(3+) contents in Cu spinel nanocrystalline ferrite. Cedoped Cu nanocrystalline ferrites with excellent properties may be suitable for potential applications in sensing, security, switching, core, multilayer chip inductor, biomedical and microwave absorption applications. | Majid Niaz Akhtar A.B.Sulong M.N.Akhtar Muhammad Azhar Khan | 2018 | Journal of Rare Earths2018,36,2: | 6 |
| 2 | Evaluation of potential RNA-interference-target genes to control cotton mealybug, Phenacoccus solenopsis (Hemiptera: Pseudococcuidae)显示文摘 | Arif M. Khan Muhammad Ashfaq Azhar A. Khan Muhammad T. Naseem Shahid Mansoor | 2018 | Insect Science2018,25,5: | 5 |
| 3 | Botanicals, selective insecticides, and predators to control Diaphorina citri (Hemiptera: Liviidae) in citrus orchards显示文摘引起 huanglongbing (HLB ) 或破坏的柠檬 greening 和经济地重要的疾病的亚洲柠檬 psyllid (ACP ) Diaphorina citri Kuwayama 向量病原体在大多数柠檬成长区域介绍。年轻柠檬射击为 psyllid 复制和开发被要求。在冬季期间,柠檬树生产很少或没有新生长。Overwintering 成年人在对另外的害虫和有益的昆虫也吸引人的最新新兴的射击上在春天复制。Botanicals 和相对选择的杀虫药剂能帮助保存有益的昆虫并且把害虫抵抗归结为杀虫药剂。Azadirachtin (Neem ) 的水花, Tropane (曼陀罗属) , Spirotetramat, Spinetoram,和用途广泛的 Imidacloprid 被评估在 10 岁的 “Kinow” 上在春天和夏天控制 ACP生产新生长的柠檬 reticulata Blanco 树。Psyllid 人口高在处理申请前每样品正在平均 5-9 美女或成年人。美女或成年人显著地在所有处理每样品被归结为 0.5-1.5 3 个星期,平均 61%-83% 减小。在 ladybeetles Adalia bipunctata, Aneglei scardoni, Cheilomenes sexmaculata,和 Coccinella septempunctata 的重要减小都没被观察。除了与 Tropane, Syrphids,蜘蛛和绿草蜻蛉在对待的树上被减少。研究被保证在有杀虫药剂的 ACP 和相互作用上估计这些食肉动物的影响。在 ACP 人口的观察减小不能在 HLB 的传播就它的繁殖潜力和角色而言是足够的。后续水花可以被要求用不同杀虫药剂的旋转完成另外的抑制。 | Azhar A. Khan Muhammad Afzal Jawwad A. Qureshi Arif M. Khan Abubakar M. Raza | 2014 | Insect Science2014,21,6: | 2 |
| 4 | Cytotoxic effect of evodiamine in SGC-7901 human gastric adenocarcinomacells via simultaneous induction of apoptosis and autophagy显示文摘 | Azhar Rasul Bo Yu Lili Zhong Muhammad Khan Hong Yang Tonghui Ma | 2012 | Oncology Reports2012,,5: | 1 |
| 5 | Structural,electrical,dielectric and magnetic properties of Mn-Nd substituted CoFeO_3 nano sized multiferroics显示文摘A series of Mn x Co_(1-x) Fe_(1-y) Nd_yO_3(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^(-13) to 1.27 * 10^(-15)cm^2V^(-1)S^(-1) by 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^(-1) while the coercivity decreased from 705 to 262 Oe with the increase of substituents.The 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. | Abdul Aziz E.Ahmed Muhammad Naeem Ashiq Muhammad Azhar Khan Nazia Karamat Irshad Ali | 2016 | Progress in Natural Science:Materials International2016,26,4: | 1 |
| 6 | Effects of bismuth on structural and dielectric properties of cobalt-cadmium spinel ferrites fabricated via micro-emulsion route显示文摘Spinel ferrites have a significant role in high-tech applications.In the present work nano-crystalline ferrites having general formula Co0.5Cd0.5BixFe2-xO4 with(x=0.0,0.05,0.1,0.15,0.2,and 0.25)are synthesized via micro-emulsion route.Powder x-ray diffraction(XRD)studies discover the FCC spinel structure.Crystalline size is calculated in a range of 11 nm-15 nm.Lattice parameter calculations are reduced due to its substitution which leads to the exchange of large ionic radius of Fe^3+for small ionic radius of Bi^3+.The x-ray density is analyzed to increase with doping.Fourier transform infrared spectroscopy(FTIR)is performed to analyze absorption band spectra.The two absorption bands are observed in a range of 400 cm^-1-600 cm^-1,and they are the characteristic feature of spinel structure.Thermo-gravimetric analysis(TGA)reveals the total weight loss of nearly 1.98%.Dielectric analysis is carried out by impedance analyzer in a frequency span from 1 MHz to 3 GHz by using the Maxwell Wagner model.Dielectric studies reveal the decrease of dielectric parameters.The alternating current(AC)conductivity exhibits a plane behavior in a low frequency range and it increases with the applied frequency increasing.This is attributed to the grain effects in a high frequency range or may be due to the reduction of porosity.Real and imaginary part of impedance show the decreasing trend which corresponds to the grain boundary action.The imaginary modulus shows the occurrence of peak that helps to understand the interfacial polarization.Cole-Cole graph shows a single semicircle which confirms that the conduction mechanism is due to the grain boundaries at low frequency.Dielectric studies reveal the applicability of these ferrites in high frequency equipment,microwave applications,high storage media,and semiconductor devices. | Furhaj Ahmed Sheikh Muhammad Khalid Muhammad Shahzad Shifa H M Noor ul Huda Khan Asghar Sameen Aslam Ayesha Perveen Jalil ur Rehman Muhammad Azhar Khan Zaheer Abbas Gilani | 2019 | Chinese Physics B2019,28,8: | 1 |
| 7 | The Pakistan Risk of Myocardial Infarction Study: a resource for the study of genetic, lifestyle and other determinants of myocardial infarction in South Asia显示文摘 | Danish Saleheen Moazzam Zaidi Asif Rasheed Usman Ahmad Abdul Hakeem Muhammed Murtaza Waleed Kayani Azhar Faruqui Assadullah Kundi Khan Shah Zaman Zia Yaqoob Liaquat Ali Cheema Abdus Samad Syed Zahed Rasheed Nadeem Hayat Mallick Muhammad Azhar Rashid Jooma | 2009 | European Journal of Epidemiology2009,,6: | 1 |
| 8 | Cytotoxic effect of evodiamine in SGC-7901 human gastric adenocarcinomacells via simultaneous induction of apoptosis and autophagy显示文摘 | Azhar Rasul Bo Yu Lili Zhong Muhammad Khan Hong Yang Tonghui Ma | 2012 | Oncology Reports2012,,5: | 1 |
| 9 | Cytotoxic effect of evodiamine in SGC-7901 human gastric adenocarcinomacells via simultaneous induction of apoptosis and autophagy显示文摘 | Azhar Rasul Bo Yu Lili Zhong Muhammad Khan Hong Yang Tonghui Ma | 2012 | Oncology Reports2012,,5: | 1 |
| 10 | Alantolactone Induces Apoptosis in HepG2 Cells through GSH Depletion, Inhibition of STAT3 Activation, and Mitochondrial Dysfunction显示文摘 | Muhammad Khan Ting Li Muhammad Khalil Ahmad Khan Azhar Rasul Faisal Nawaz Meiyan Sun Yongchen Zheng Tonghui Ma D. M. Clarke | 2012 | BioMed Research International2012,,: | 1 |
| 11 | Intercomparison of Environmental Gamma doses Measured with A NaI(Tl) Survey Meter and Thermoluminescent Dosimeters(TLDs) in the Poonch Division of Azad Kashmir, Pakistan显示文摘This study presents the intercomparison of the outdoor environmental gamma dose rates measured using a Na I(Tl)based survey meter along with thermoluminescent dosimeters(TLDs)and estimation of excess lifetime cancer risk(ELCR),for the inhabitants of Poonch division of the | Muhammad Rafique Kimberlee J Kearfott Khalil Ahmad Jabeen Akhter Abdul Razzaq Khan Raja Azhar Saeed Saeed Ur Rahman Matiullah Muhammad Usman Rajput | 2014 | Biomedical and Environmental Sciences2014,27,12: | 0 |
| 12 | Genome editing in cotton:challenges and opportunities显示文摘Cotton has enormous economic potential providing high-quality protein,oil,and fibre.A large increase in cotton output is necessary due to the world’s changing climate and constantly expanding human population.In the past,conventional breeding techniques were used to introduce genes into superior cotton cultivars to increase production and to improve quality.The disadvantages of traditional breeding techniques are their time-consuming,reliance on genetic differences that are already present,and considerable backcrossing.To accomplish goals in a short amount of time,contemporary plant breeding techniques,in particular modern genome editing technologies(GETs),can be used.Numerous crop improvement initiatives have made use of GETs,such as zinc-finger nucleases,transcription-activator-like effector nucleases,clustered regularly interspaced palindromic repeats(CRISPR),and CRISPR-associated proteins systems(CRISPR/Cas)-based technologies.The CRISPR/Cas system has a lot of potential because it combines three qualities that other GETs lack:simplicity,competence,and adaptability.The CRISPR/Cas mechanism can be used to improve cotton tolerance to biotic and abiotic stresses,alter gene expression,and stack genes for critical features with little possibility of segregation.The transgene clean strategy improves CRISPR acceptability addressing regulatory issues associated with the genetically modified organisms(GMOs).The research opportunities for using the CRISPR/Cas system to address biotic and abiotic stresses,fibre quality,plant architecture and blooming,epigenetic changes,and gene stacking for commercially significant traits are highlighted in this article.Furthermore,challenges to use of CRISPR technology in cotton and its potential for the future are covered in detail. | KHAN Zulqurnain KHAN Sultan Habibullah AHMED Aftab IQBAL Muhammad Umar MUBARIK Muhammad Salman GHOURI Muhammad Zubair AHMAD Furqan YASEEN Saba ALI Zulfiqar KHAN Asif Ali AZHAR Muhammad Tehseen | 2023 | Journal of Cotton Research2023,6,1: | 0 |
| 13 | Mn_(0.8)Zn_(0.2)Fe_2O_4 nanoparticulates spinel ferrites:An approach to enhance the antenna field strength for improved magnitude versus offset(MVO)显示文摘Electromagnetic signals in deep reservoir are very weak so that it is difficult to predict about the presence of hydrocarbon in seabed logging(SBL) environment.In the present work,Mn0.8Zn0.2Fe2O4 nanoferrites were prepared by a sol–gel technique at different sintering temperatures of450 °C,650 °C and 850 °C to increase the strength of electromagnetic(EM) antenna.XRD,FESEM,Raman spectroscopy and HRTEM were used to analyze the phase,surface morphology and size of the nanoferrites.Magnetic properties of the nanoferrites were also measured using an impedance network analyzer.However,nanoferrites sintered at 850 °C with initial permeability of 200 and Q factor of 50 were used as magnetic feeders with the EM antenna.Lab scale experiments were performed to investigate the effect of magnetic field strength in scale tank.SPSS and MATLAB softwares were also used to confirm the oil presence in scale tank.It was observed that the magnitude of the EM waves for the antenna was increased up to 233%.Finally,the correlation values also show 208% increase in the magnetic field strength with the presence of the oil.Therefore,antenna with Mn0.8Zn0.2Fe2O4 nanoferrites based magnetic feeders can be used for deep water and deep target hydrocarbon exploration. | Majid Niaz Akhtar Nadeem Nasir Muhammad Kashif Noorhana Yahya Mukhtar Ahmad Ghulam Murtaza Muhammad Azhar Khan M.H.Asif A.Sattar R.Raza M.Saleem S.N.Khan | 2014 | Progress in Natural Science:Materials International2014,24,4: | 0 |
| 14 | Financial development during COVID‑19 pandemic:the role of coronavirus testing and functional labs显示文摘The outbreak of the SARS-CoV-2 virus in early 2020,known as COVID-19,spread to more than 200 countries and negatively affected the global economic output.Financial activities were primarily depressed,and investors were reluctant to start new financial investments while ongoing projects further declined due to the global lockdown to curb the disease.This study analyzes the money supply reaction to the COVID-19 pandemic using a cross-sectional panel of 115 countries.The study used robust least square regression and innovation accounting techniques to get sound parameter estimates.The results show that COVID-19 infected cases are the main contributing factor that obstructs financial activities and decrease money supply.In contrast,an increasing number of recovered cases and COVID-19 testing capabilities gave investors confidence to increase stock trade across countries.The overall forecast trend shows that COVID-19 infected cases and recovered cases followed the U-shaped trend,while COVID-19 critical cases and reported deaths showed a decreasing trend.Finally,the money supply and testing capacity show a positive trend over a period.The study concludes that financial development can be expanded by increasing the testing capacity and functional labs to identify suspected coronavirus cases globally. | Muhammad Khalid Anser Muhammad Azhar Khan Khalid Zaman Abdelmohsen A.Nassani Sameh E.Askar Muhammad Moinuddin Qazi Abro Ahmad Kabbani | 2021 | Financial Innovation2021,7,1: | 0 |
| 15 | Drug-Drug Interaction Studies of Levocetirizine with Atenolol显示文摘 | Shafaque Mehboob Muhammad Azhar Mughal Khalid Aftab MoonaMehboob Khan Najma Sultana Syed Arayne | 2017 | Journal of Pharmacy and Pharmacology2017,5,3: | 0 |
| 16 | A discussion on cotton transformation during the last decade (2010–2021);an update on present trends and future prospects显示文摘The introduction of genetically modified(GM)cotton in 1996 in the US and its worldwide spread later rejuvenated cotton production in many parts of the world.The evolution is continued since then and currently,the 3rd and fourth generation of same GM cotton is grown in many parts of the world.The GM cotton introduced in 1996 was simple Bt cotton that expressed a single Cry1Ac gene,the later generation carried multiple Cry genes along with the genes controlling herbicide tolerance.Current day GM cotton does not only give stable resistance against lepidopteran insects but also facilitates the farmers to spray broad-spectrum herbicides without harming the crop.The evolution of GM cotton is continued both on the basic and applied side and interventions have been introduced during the last decade.Earlier the cotton transformation was limited to Cocker strains which are getting possible in many other varieties,too.It is successful with both gene gun,and Agrobacterium and inplanta transformation has made it a routine activity.Apart from overexpression studies for various purposes including biotic,abiotic,and quality traits,RNAi and genome editing are explored vigorously.Through this review,we have tried to explore and discuss various interventions for improving transformation protocols,the applications of cotton transformation,and future strategies being developed to get maximum benefits from this technology during the last decade. | QANDEEL‑E‑ARSH AZHAR Muhammad Tehseen ATIF Rana Muhammad ISRAR Mahwish KHAN Azeem Iqbal KHALID Shahzad RANA Iqrar Ahmad | 2021 | Journal of Cotton Research2021,4,4: | 0 |
| 17 | On Edge Irregular Reflexive Labeling of Categorical Product of Two Paths显示文摘Among the huge diversity of ideas that show up while studying graph theory,one that has obtained a lot of popularity is the concept of labelings of graphs.Graph labelings give valuable mathematical models for a wide scope of applications in high technologies(cryptography,astronomy,data security,various coding theory problems,communication networks,etc.).A labeling or a valuation of a graph is any mapping that sends a certain set of graph elements to a certain set of numbers subject to certain conditions.Graph labeling is a mapping of elements of the graph,i.e.,vertex and for edges to a set of numbers(usually positive integers),called labels.If the domain is the vertex-set or the edge-set,the labelings are called vertex labelings or edge labelings respectively.Similarly,if the domain is V(G)[E(G)],then the labeling is called total labeling.A reflexive edge irregular k-labeling of graph introduced by Tanna et al.:A total labeling of graph such that for any two different edges ab and a'b'of the graph their weights has wt_(x)(ab)=x(a)+x(ab)+x(b) and wt_(x)(a'b')=x(a')+x(a'b')+x(b') are distinct.The smallest value of k for which such labeling exist is called the reflexive edge strength of the graph and is denoted by res(G).In this paper we have found the exact value of the reflexive edge irregularity strength of the categorical product of two paths (P_(a)×P_(b))for any choice of a≥3 and b≥3. | Muhammad Javed Azhar Khan Muhammad Ibrahim Ali Ahmad | 2021 | Computer Systems Science & Engineering2021,36,3: | 0 |