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| 1 | Interactions of Cationic Surfactant Cetyl-trimethyl ammonium bromide with Ammonium nitrate:Surface and Thermodynamic Studies显示文摘The study of interactions between surfactant and salt in aqueous solutions has attracted significant interest in recent years because of their widespread applications and relatively complex behavior.This work reports the systematic study of surface phenomenon and self-aggregation behavior of cationic surfactant cetyltrimethyl ammonium bromide(CTAB)with ammonium nitrate(NH_(4)NO_(3))salt.Surface and thermodynamic properties of cationic surfactant CTAB with NH_(4)NO_(3)were investigated at different temperatures using different techniques such as conductometry and surface tensiometery.The surface tension measurement was carried out to find out the critical micelle concentration,free energy of adsorption,free energy of micellization,minimum area per molecule,and surface excess concentration.The study reveals that the process of micellization is spontaneous and exothermic in nature.Conductance measurement was carried out to determine critical micelle concentration,degree of ionization and degree of counter ion binding.Addition of NH_(4)NO_(3)to the surfactant solutions increase the values of degree of ionization and degree of counter ion binding,although it lowers the values of critical micelle concentration showing that the process of micellization is more favorable and spontaneous.The study is very helpful to develop better understanding about interaction between electrolyte and surfactant,which are used in many applications and in different processes(e.g.,pharmaceutical,industrial foaming,drug solubilization,oil recovery,and medium for metal nanoparticle formation). | Noor Rehman Zia Ul Haq Hidayat Ullah Inamullah Mian Xian Li | 2021 | Chinese Journal of Chemical Physics2021，34，4： | 2 |
| 2 | 基于核密度估计的新浪微博数据地理空间分析:以上海市为例显示文摘为了提取和分析中国上海的社交网络位置数据,通过使用KDE作为空间分析技术来探讨LBSN数据的应用,分析用户参与的新浪微博签到数据与城市特征之间的关系,更重要的是调查上海密集地区的人口密度,以便于相关部门更好地观察和管理。通过使用新浪微博API收集了中国上海10个不同地区在2016年1月~3月期间的数据,并利用核密度估计对基于位置社交网络数据集的新浪微博用户的签到频率进行分析。研究结果表明,核密度估计方法为利用地理空间数据集进行空间模式建模提供了有益的见解。此外,与研究区域的副城区相比,中心城区的密度更大。由此得出结论:通过使用核密度估计技术,可以评估个体的签到行为以及更广泛的总体人口模式。该研究对城市功能及其环境影响、城市可持续性发展和基于城市人口密度的应急响应等领域都有一定的借鉴意义。 | Saqib Ali Haidery 万旺根 曾本冲 Naimat Ullah Khan Muhammad Rizwan Hidayat Ullah | 2019 | 电子测量技术2019，42，21： | 2 |
| 3 | Bioactive chemical constituents of two endophytic fungi显示文摘 | Hidayat Hussain Karsten Krohn Zia Ullah Siegfried Draeger Barbara Schulz | 2007 | Biochemical Systematics and Ecology2007，，12： | 1 |
| 4 | Enhanced Thermoelectric Transport Properties of La0.98Sr0.02CoO3-BiCuSeO Composite显示文摘 | Muhammad Umer Farooq Ziyuan Gao Sajid Butt Kewei Gao Xiaolu Pang Hidayat Ullah Shah Hasnain Mehdi Jafri Asif Mahmod Xigui Sun Nasir Mahmood | 2016 | Journal of Electrical Engineering2016，4，2： | 1 |
| 5 | IPM-Biological and integrated management of desert locust显示文摘Locusts have caused periodic disasters in the recorded history of humankind.Up to now,locust disaster is still the biggest threat to the world’s agricultural production.The desert locust Schistocerca gregaria is one of the most harmful locusts,which has caused massive food crises,economic losses,and ecological disasters.The desert locust is a migratory insect pest that occurs year-round in the tropic and subtropical regions.Under the wind and seasonal alternation,it moves and flies in the African continent and West Asia.Desert locust damages the stems and leaves of more than 300 plants,including Gramineae,Tribulus terrestris,and Euphorbiaceae.Locusts cause devastating disasters to local plants,especially field crops,and significantly threaten food security.To date,voluminous research has been conducted regarding the ecology and management of desert locusts.This review represents an effort to summarize the basic information on the biology and ecology,distribution,damage,and economic impact of desert locusts,examine the recent developments in integrated locust management,and make recommendations for future research. | LI Shuang FENG Shi-qian Hidayat ULLAH TU Xiong-bing ZHANG Ze-hua | 2022 | Journal of Integrative Agriculture2022，21，12： | 1 |
| 6 | Recurrent Convolutional Neural Network MSER-Based Approach for Payable Document Processing显示文摘A tremendous amount of vendor invoices is generated in the corporate sector.To automate the manual data entry in payable documents,highly accurate Optical Character Recognition(OCR)is required.This paper proposes an end-to-end OCR system that does both localization and recognition and serves as a single unit to automate payable document processing such as cheques and cash disbursement.For text localization,the maximally stable extremal region is used,which extracts a word or digit chunk from an invoice.This chunk is later passed to the deep learning model,which performs text recognition.The deep learning model utilizes both convolution neural networks and long short-term memory(LSTM).The convolution layer is used for extracting features,which are fed to the LSTM.The model integrates feature extraction,modeling sequence,and transcription into a unified network.It handles the sequences of unconstrained lengths,independent of the character segmentation or horizontal scale normalization.Furthermore,it applies to both the lexicon-free and lexicon-based text recognition,and finally,it produces a comparatively smaller model,which can be implemented in practical applications.The overall superior performance in the experimental evaluation demonstrates the usefulness of the proposed model.The model is thus generic and can be used for other similar recognition scenarios. | Suliman Aladhadh Hidayat Ur Rehman Ali Mustafa Qamar Rehan Ullah Khan | 2021 | Computers, Materials & Continua2021，，12： | 1 |
| 7 | High energy storage density with ultra-high efficiency and fast charging-discharging capability of sodium bismuth niobate lead-free ceramics显示文摘Ceramics-based capacitors with excellent energy storage characteristics,fast charging/discharge rate,and high efficiency have received significant attention.In this work,Na0.73Bi0.09NbO3(NBN)ceramics were processed through solid-state sintering route.The investigated ceramics were crystallized in a single perovskite phase.Dense microstructure,with small average grain size(~0.92 mm)is obtained for the investigated ceramics.A high dielectric constant>1000 accompanied by a low dielectric loss was achieved for these ceramics at ambient temperature.A recoverable energy density~0.92 J/cm3 and ultra-high efficiency of 96.33%at 138 kV/cm were obtained at room temperature.Furthermore,a lower discharging time of 0.14 ms was also achieved.This material is a suitable candidate for power pulsed applications. | Abdul Manan Maqbool Ur Rehman Atta Ullah Arbab Safeer Ahmad Yaseen Iqbal Ibrahim Qazi Murad Ali Khan Hidayat Ullah Shah Arshad Hussain Wazir | 2021 | Journal of Advanced Dielectrics2021，11，4： | 0 |
| 8 | Feasibility-Guided Constraint-Handling Techniques for Engineering Optimization Problems显示文摘The particle swarm optimization(PSO)algorithm is an established nature-inspired population-based meta-heuristic that replicates the synchronizing movements of birds and sh.PSO is essentially an unconstrained algorithm and requires constraint handling techniques(CHTs)to solve constrained optimization problems(COPs).For this purpose,we integrate two CHTs,the superiority of feasibility(SF)and the violation constraint-handling(VCH),with a PSO.These CHTs distinguish feasible solutions from infeasible ones.Moreover,in SF,the selection of infeasible solutions is based on their degree of constraint violations,whereas in VCH,the number of constraint violations by an infeasible solution is of more importance.Therefore,a PSO is adapted for constrained optimization,yielding two constrained variants,denoted SF-PSO and VCH-PSO.Both SF-PSO and VCH-PSO are evaluated with respect to ve engineering problems:the Himmelblau’s nonlinear optimization,the welded beam design,the spring design,the pressure vessel design,and the three-bar truss design.The simulation results show that both algorithms are consistent in terms of their solutions to these problems,including their different available versions.Comparison of the SF-PSO and the VCHPSO with other existing algorithms on the tested problems shows that the proposed algorithms have lower computational cost in terms of the number of function evaluations used.We also report our disagreement with some unjust comparisons made by other researchers regarding the tested problems and their different variants. | Muhammad Asif Jan Yasir Mahmood Hidayat Ullah Khan Wali Khan Mashwani Muhammad Irfan Uddin Marwan Mahmoud Rashida Adeeb Khanum Ikramullah Noor Mast | 2021 | Computers, Materials & Continua2021，，6： | 0 |
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