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| 1 | Effect of chromium on growth attributes in sunflower(Helianthus annuus L.)显示文摘Heavy metal soil pollution takes place when the metal concentration of soil exceeds natural background level and causes ecological destruction and deterioration of the environment.In the present study,a pot experiment was conducted to evaluate the effect of chromium-contaminated soil in sunflower(Helianthus annuus L.)growth attributes.Three different levels of chromium(Cr)i.e.,20, 40,and 60 mg/kg were applied to three varieties of sunflower(G-3,G-9,and G-59).The results of morphological,chemical,and yield parameters were recorded at crop maturity.The result showed that germination,root,and shoot lengths were decreased with increase in Cr concentrations.A gradual decrease was observed for various morphological parameters like root fresh and dry weights,shoot fresh and dry weights,and plant height with increase in Cr levels.A comparison among Cr treatments obtained a significant decrease in yield parameters as achenes/capitulum,achenes/plant,and 100 achenes weight in three varieties.Cr was significantly absorbed by roots but its transport to other parts of plants was slow,and uptake in seeds was much lower than in roots and shoots. | FOZIA Andaleeb MUHAMMAD Anjum Zia MUHAMMAD Ashraf ZAFAR Mahmood Khalid | 2008 | Journal of Environmental Sciences2008，20，12： | 9 |
| 2 | Interaction between seed size and NaCl on germination and early seedling growth of some Turkish cultivars of chickpea(Cicer arietinum L.)显示文摘Chickpea is an important food legume crop of Turkey and is largely grown for human consumption on low moisture or salt-affected soils. The objective of the study was to find the effects of NaCl stress at electrical conductivities of 4.5,8.6,12.7 and 16.3 dS/m and seed sizes(7,8 and 9 mm) on germination and early seedling growth of three popular chickpea cultivars(AKN-97,Gokce and Uzunlu-99). Mean frequency of germination,germination time,germination index,root length,shoot length and seedling fresh weight showed seed size-dependent responses of cultivars to salt stress. In general,small seeds germinated and grew more rapidly compared to medium and large seeds of the same cultivars against all levels of salt stress,with the best results in cultivar Uzunlu-99. No effect of NaCl treatments was observed on frequency of germination;however,a drastic decrease in early seedling growth was recorded at increased NaCl concentrations. Regression analysis results showed a significantly positive rela-tionship(P<0.01) between seed size and mean germination time,whereas a significantly negative relationship was recorded between seed size and germination index,root length,shoot length. Moreover,linear regression values apparently confirmed that increased seed size in each cultivar affected decreased germination index,root and shoot lengths with enhanced mean germination time. Thus,it was concluded that the use of small seeds could considerably reduce the production costs of chickpea in salt-affected soils. | Muharrem KAYA Gamze KAYA Mehmet Demir KAYA Mehmet ATAK Sevil SAGLAM Khalid Mahmood KHAWAR Cemalettin Yasar CIFTCI | 2008 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2008，9，5： | 8 |
| 3 | Estimation and inter-comparison of dust aerosols based on MODIS, MISR and AERONET retrievals over Asian desert regions显示文摘This study presents detailed analysis of spatiotemporal variations and trend of dust optical properties i.e., Aerosol Optical Depth(AOD) and Angstrom component over Asian desert regions using thirteen years of data(i.e., 2001–2013) retrieved from Aerosol Robotic Network(AERONET), Moderate Resolution Imaging Spectroradiometer(MODIS) and Multi-angle Imaging Spectroradiometer(MISR). These regions include Solar Village, Dunhuang and Dalangzadgad and are considered as origin of desert aerosols in Asia. Mann–Kendall trend test was used to show the trend of AOD. The relationship of AOD with weather parameters and general AOD trend over different wavelengths has also been shown. AOD's trend has been observed significant throughout the year in Solar Village, while in Dunhuang and Dalanzadgad the significant trend has been found only in peak period(March–June).Analysis show high values of AOD and low values of angstrom in Solar Village during peak period. In Chinese desert regions, high values of AOD have been found during peak period and low values in pre-peak period. Significant relationship has been observed between AOD and average temperature in Solar Village and Dalanzadgad whereas rainfall and wind speed showed no significant impact on AOD in all desert regions. | Ammara Habib Bin Chen Bushra Khalid Saichun Tan Huizheng Che Tariq Mahmood Guangyu Shi Muhammad Tahir Butt | 2019 | Journal of Environmental Sciences2019，31，2： | 5 |
| 4 | Bifunctional catalysts of Co3O4@GCN tubular nanostructured (TNS) hybrids for oxygen and hydrogen evolution reactions显示文摘为氧和氢进化反应(OER/HER ) 的催化剂在精力采购例如切开的水的可更新的绿色的心。尽管不可思议的努力被作了为 OER 和她开发有效催化剂,大挑战在 bifunctional 催化剂的发展尚待。这里,我们报导公司 3 在 graphitic 碳氮化物(GCN ) 的管状的 nanostructures 嵌入并且在低温度通过一个灵巧的、大规模化学方法综合了的 O 4 。在公司 3 O 4 和 GCN 为 OER 和她作为 bifunctional 催化剂导致了优秀性能。混血儿的高表面区域,唯一的管状的 nanostructure,和作文为催化作用使所有氧化还原作用地点容易可得到并且提供了更快的离子、电子的传导。公司 3 O 4@GCN 管状的 nanostructured (TNS ) 混血儿展出了最低过电位(0.12 V ) 和优秀当前的密度(在 OER 的 147 妈 / 厘米 2) ,比基准 IrO 2 和 RuO 2, 并且与在碱的媒介的优异耐久性好。而且,公司 3 O 4@GCN TNS 混血儿在她表明了优秀性能与低得多的发作和过电位,并且稳定的当前的密度。这被期望公司 3 在这研究开发的 O 4@GCN TNS 混血儿将是在大规模水切开和燃料房间的高贵金属催化剂的一种吸引人的选择。 | Muhammad Tahir Nasir Mahmood Xiaoxue Zhang Tariq Mahmood Faheem. K. Butt Imran Aslam M.Tanveer Faryal Idrees Syed Khalid Imran Shakir Yiming Yan Jijun Zou Chuanbao Cao Yanglong Hou | 2015 | Nano Research2015，8，11： | 2 |
| 5 | Perspectives of Using L-Tryptophan for Improving Productivity of Agricultural Crops: A Review显示文摘Plant growth regulators are biologically active signaling molecules that regulate a number of plant physiological processes. Auxin(indole-3-acetic acid) is an important plant growth regulator and is synthesized within plant tissues through L-tryptophan(L-TRP)-dependent and-independent pathways. It has been found that plants respond to exogenously applied L-TRP due to insufficient endogenous auxin biosynthesis. The exogenous application of L-TRP is highly significant for normal plant growth and development.L-tryptophan is applied through foliar spray, seed priming, and soil application. Soil-applied L-TRP is either directly taken up by plants or metabolized to auxin by soil microbiota and then absorbed by plant roots. Similarly, foliar spray and seed priming with L-TRP stimulates auxin synthesis within plants and improves the growth and productivity of agricultural crops. Furthermore, L-TRP contains approximately 14% nitrogen(N) in its composition, which is released upon its metabolism within a plant or in the rhizosphere and plays a role in enhancing crop productivity. This review deals with assessing crop responses under the exogenous application of L-TRP in normal and stressed environments, mode of action of L-TRP, advantages of using L-TRP over other auxin precursors, and role of the simultaneous use of L-TRP and auxin-producing microbes in improving the productivity of agricultural crops. To the best of our knowledge, this is the first review reporting the importance of the use of L-TRP in agriculture. | Ayesha MUSTAFA Muhammad IMRAN Muhammad ASHRAF Khalid MAHMOOD | 2018 | Pedosphere2018，28，1： | 2 |
| 6 | Study of cellulolytic soil fungi and two nova species and new medium显示文摘This study is aimed at identifying and determining the percentage of occurrence frequency of cellulose decomposing soil fungi. The soil samples were inoculated into culture plates prepared in Sabouraud medium under sterilized conditions and incubated at 30 °C for 4 to 7 d. The identified fungal species were incubated in self-designed cellulose medium for testing their cellulolytic ability. Forty-two species, including 2 nova species, representing sixteen genera showed growth and sporulation in the cellulose medium. Most of the isolated species were from genus Aspergillus and Penicillium. Aspergillus niger and Mucor hie-malis showed highest occurrence frequency (45% and 36% respectively), as these species were collected from about 80% of soil samples. Being agar free and cheaper, the new fungal medium designed showed results equivalent to Sabouraud medium. | KHALID Mahmood YANG Wei-jun KISHWAR Nazir RAJPUT Zahid Iqbal ARIJO Abdullah G. | 2006 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2006，7，6： | 2 |
| 7 | Controlling the Surface Nanostructure of ZnO and A1-Doped ZnO Thin Films Using Electrostatic Spraying for Their Application in 12% Efficient Erovskite Solar Ceils显示文摘 | Khalid Mahmood Bhabani Sankar Swain Hyun Suk Jung | 2014 | Nanoscale2014，，6： | 1 |
| 8 | Fabrication of NiO coated SiO_2 and SiO_2 coated NiO for the removal of Pb^(2+) ions显示文摘We have prepared silica,SiO2coated NiO and NiO coated SiO2by sol-gel method.The physicochemical properties of the desired materials were investigated by surface charge properties,scanning electron microscopy(SEM),energy dispersive X-ray(EDX) spectroscopy,surface area measurements and X-ray diffraction(XRD) analyses.The point of zero charge(PZC) of the solid was determined by the salt addition method.In coated materials,two PZC values were noted representing the surface charge of their counterparts.The SEM image of SiO2coated NiO displays a uniform coating of silica on the surface of NiO whereas in case of NiO coated SiO2,a honeycomb like appearance was observed with highly porous structures.In the diffractograms of NiO,the characteristic peaks were suppressed in NiO coated silica however,no diffraction peak could be seen in SiO2coated NiO.Batch adsorption technique was applied for the removal of Pb2+ions from aqueous solution.The sorption trend for Pb2+ions was observed in the order of NiO coated SiO2> SiO2coated NiO > NiO > SiO2.This trend confirms that the coated materials have more sorption capacities than their parent counterparts. | Saba Noor Muhammad Waseem Umer Rashid Muhammad Anis-ur-Rehman Wajid Rehman Khalid Mahmood | 2014 | Chinese Chemical Letters2014，25，5： | 1 |
| 9 | Tailoring the optical and magnetic properties of La-BaM hexaferrites by Ni substitution显示文摘We investigate the impact of Ni insertion on the structural,optical,and magnetic properties of Ba_(0.8)La_(0.2)Fe_(12-x)Ni_(x)O_(19)hexaferrites(Ni substituted La-BaM hexaferrites).Samples were prepared using the conventional co-precipitation method and sintered at 1000℃for 4 hours to assist the crystallization process.An analysis of the structure of the samples was carried out using an x-ray diffraction(XRD)spectrometer.The M-type hexagonal structure of all the samples was confirmed using XRD spectra.The lattice parameters a and c were found to be in the ranges of 5.8925±0.001 nm–5.8952±0.001 nm and 23.2123±0.001 nm–23.2219±0.001 nm,respectively.The M-type hexagonal nature of the prepared samples was also indicated by the presence of corresponding FT-IR bands and Raman modes in the FT-IR and Raman spectra,respectively.EDX results confirmed the successful synthesis of the samples according to the required stoichiometric ratio.A UV-vis spectrometer was used to record the absorption spectra of the prepared samples in the wavelength range of 200 nm–1100 nm.The optical energy bandgap of the samples was found to be in the range of 1.21 eV–3.39 eV.The M–H loops of the samples were measured at room temperature at an applied magnetic field range of 0 kOe–60 kOe.A high saturation magnetization of 99.92 emu/g was recorded in the sample with x=0 at a microwave operating frequency of 22.2 GHz.This high value of saturation magnetization is due to the substitution of La3+ions at the spin-up(12k,2a,and 2b)sites.The Ni substitution is proven to be a potential candidate for the tuning of the optical and magnetic parameters of M-type hexaferrites.Therefore,we suggest that the prepared samples are suitable for use in magneto-optic applications. | Hafiz T.Ali MRamzan M Imran Arshad Nicola A.Morley M.Hassan Abbas Mohammad Yusuf Atta Ur Rehman Khalid Mahmood Adnan Ali Nasir Amin MAjaz-un-Nabi | 2022 | Chinese Physics B2022，31，2： | 1 |
| 10 | Lightweight authentication protocol for e-health clouds in IoT-based applications through 5G technology显示文摘Modem information technology has been utilized progressively to store and distribute a large amount of healthcare data to reduce costs and improve medical facilities.In this context,the emergence of e-Health clouds offers novel opportunities,like easy and remote accessibility of medical data.However,this achievement produces plenty of new risks and challenges like how to provide integrity,security,and confidentiality to the highly susceptible e-Health data.Among these challenges,authentication is a major issue that ensures that the susceptible medical data in clouds is not available to illegal participants.The smart card,password and biometrics are three factors of authentication which fulfill the requirement of giving high security.Numerous three-factor ECC-based authentication protocols on e-Health clouds have been presented so far.However,most of the protocols have serious security flaws and produce high computation and communication overheads.Therefore,we introduce a novel protocol for the e-Health cloud,which thwarts some major attacks,such as user anonymity,offline password guessing,impersonation,and stolen smart card attacks.Moreover,we evaluate our protocol through formal security analysis using the Random Oracle Model(ROM).The analysis shows that our proposed protocol is more efficient than many existing protocols in terms of computation and communication costs.Thus,our proposed protocol is proved to be more efficient,robust and secure. | Minahil Muhammad Faizan Ayub Khalid Mahmood Saru Kumari Arun Kumar Sangaiah | 2021 | Digital Communications and Networks2021，7，2： | 1 |
| 11 | screening rhi-zobacteria containing ACC - deaminase for growth promotionof wheat under whater stress显示文摘 | Bangash N Khalid A Mahmood T et ai | 2013 | Pakistan Journal of Bota-ny2013，45，： | 1 |
| 12 | XRD studies of polyurethane elastomers based on chitin/1,4-butane diol blends显示文摘 | Khalid Mahmood Zia Ijaz Ahmad Bhatti Mehdi Barikani Mohammad Zuber Haq Nawaz Bhatti | 2008 | Carbohydrate Polymers2008，，2： | 1 |
| 13 | Moleeular engineering and properties of chitin based shape memory polyurethanes显示文摘 | Barikani Mehdi Zia Khalid Mahmood Bhatti ljaz Ahmad | 2008 | Carbohydrate Polymers2008，74，： | 1 |
| 14 | Surface characteristics of chitinbased shape memory polyurethane elastomers 显示文摘 | Zia Khalid Mahmood Zuber Mohammad Barikani Mehdi | 2009 | Colloids and Surfaces B: Biointerfaces2009，72，： | 1 |
| 15 | Design of a high-performance unsteady Naiver–Stokes solver using a flexible-cycle additive-correction multigrid technique显示文摘 | Hongyi Xu Weixing Yuan Mahmood Khalid | 2005 | Journal of Computational Physics2005，，2： | 1 |
| 16 | Surface characteristics of UV-irradiated chitin-based shape memory polyurethanes显示文摘 | Zia Khalid Mahmood Zuber Mohammad Mahboob Shahid | 2010 | Carbohydrate Polymer2010，80，： | 1 |
| 17 | Influnce of Steel Fiber and Compression Reinforcement on Deflection of High-Strength Concrete Beams显示文摘 | Samir A. Ashour Khalid Mahmood Faisal F. Wafa | | 0，，06： | 1 |
| 18 | An enhanced scheme for mutual authentication for healthcare services显示文摘With the advent of state-of-art technologies,the Telecare Medicine Information System(TMIS)now offers fast and convenient healthcare services to patients at their doorsteps.However,this architecture engenders new risks and challenges to patients'and the server's confidentiality,integrity and security.In order to avoid any resource abuse and malicious attack,employing an authentication scheme is widely considered as the most effective approach for the TMIS to verify the legitimacy of patients and the server.Therefore,several authentication protocols have been proposed to this end.Very recently,Chaudhry et al.identified that there are vulnerabilities of impersonation attacks in Islam et al.'s scheme.Therefore,they introduced an improved protocol to mitigate those security flaws.Later,Qiu et al.proved that these schemes are vulnerable to the man-in-the-middle,impersonation and offline password guessing attacks.Thus,they introduced an improved scheme based on the fuzzy verifier techniques,which overcome all the security flaws of Chaudhry et al.'s scheme.However,there are still some security flaws in Qiu et al.'s protocol.In this article,we prove that Qiu et al.'s protocol has an incorrect notion of perfect user anonymity and is vulnerable to user impersonation attacks.Therefore,we introduce an improved protocol for authentication,which reduces all the security flaws of Qiu et al.'s protocol.We also make a comparison of our protocol with related protocols,which shows that our introduced protocol is more secure and efficient than previous protocols. | Salman Shamshad Muhammad Faizan Ayub Khalid Mahmood Saru Kumari Shehzad Ashraf Chaudhry Chien-Ming Chen | 2022 | Digital Communications and Networks2022，8，2： | 1 |
| 19 | Mapping of Muslim Bagh ophiolite complex (Pakistan) using new remote sensing, and field data显示文摘 | Shuhab D. Khan Khalid Mahmood John F. Casey | 2006 | Journal of Asian Earth Sciences2006，，2： | 1 |
| 20 | Pharmacokinetic modelling of microencapsulated metronidazole显示文摘The aim of present study is to develop a pharmacokinetic model for microencapsulated metroni- dazole to predict drug absorption pattern in healthy human and validate this model internally. Metronidazole was microencapsulated into ethylcellulose shells followed by the conversion of these microcapsules into tablets. Dissolution study of tablets was conducted in 450 mL double distilled water, 0.1 mol·L-1 HCl and phosphate buffer (pH 6.8) maintained at (37 ± 0.5) ℃ using USP apparatus II at 50, 100 and 150 r·min-1. Three metronidazole tablets (T1: fast release, T2: moderate release, T3: slow release and reference) were administered to twenty four healthy human volunteers and serial blood samples were collected for 12 hours followed by their analysis using RP-HPLC. Drug release data were analyzed by various model dependent and independent approaches. Drug absorbed (%) was determined by Wagner-Nelson method from plasma concentration profile. Internal predictability was checked from Cmax and AUC. Optimum dissolution profile was observed in double distilled water and 50 r·min-1. A good level A correlation was observed between drug dissolution and absorption profiles (correlation coefficient, R2 = 0.900 9, 0.942 6, 0.901 5 and 0.932 for T1, T2, T3 and reference, respectively). Internal predictability was found less than 10%. Good correlation coefficients and low prediction errors elaborate the validity of this mathematical in-vitro in-vivo correlation model as a predictive tool for the determination of pharmacokinetics from dissolution data. | Mahmood AHMAD Khalid PERVAIZ Ghulam MURTAZA Munaza RAMZAN | 2009 | 药学学报2009，44，6： | 1 |
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