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Integrated ozone–photo–Fenton process for the removal of pollutant from industrial wastewater

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Chinese Journal of Chemical Engineering 2017年第4期25卷 516-522页

作者： P.Asaithambi Baharak Sajjadi abdul Raman abdul Aziz Department of Chemical Engineering Faculty of EngineeringUniversity of Malaya50603Malaysia

The use of hybrid advanced oxidation processes(AOPs) for the removal of pollutants from industrial effluents has been extensively studied in recent literature. The aim of this study is to compare the performance of the photo,Fenton, photo-Fenton and ozone–photo–Fenton processes in terms of color removal and chemical oxygen demand(COD) removal of distillery industrial effluent together with the associated electrical energy per order. It was observed from the experimental results that the O_3/UV/Fe^(2 +)/H_2O_2 process yielded a 100% color and95.50% COD removals with electrical energy per order of 0.015 k W·h·m^(-3) compared to all other combinations of the AOPs. The effects of various operating parameters such as H_2O_2 and Fe^(2+) concentration, effluent pH, COD concentration and UV power on the removal of color, COD and electrical energy per order for the ozone–photo–Fenton process was critically studied and reported. The color and COD removals were analyzed using a UV/Vis spectrometer and closed reflux method.

关键词： Fenton photo ozone wastewater pollutant effluent AOPs hydroxyl inorganic irradiation

Effective Customer Review Analysis Using Combined Capsule Networks with matrix Factorization Filtering

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Computer Systems Science & Engineering 2023年第3期44卷 2537-2552页

作者： K.Selvasheela A.m.Abirami abdul Khader Askarunisa Department of Computer Science and Engineering Sree Sakthi Engineering CollegeCoimbatoreTamilnadu641104India Department of Information Technology Thiagarajar College of EngineeringMaduraiTamilnadu625015India Department of Computer Science and Engineering Sethu Institute of TechnologyVirudhunagarTamilnadu626115India

Nowadays,commercial transactions and customer reviews are part of human life and various business *** technologies create a great impact on online user reviews and activities,affecting the business *** reviews and ratings are more helpful to the new customer to purchase the product,but the fake reviews completely affect the *** traditional systems consume maximum time and create complexity while analyzing a large volume of customer ***,in this work optimized recommendation system is developed for analyzing customer reviews with minimum ***,Amazon Product Kaggle dataset information is utilized for investigating the customer *** collected information is analyzed and processed by batch normalized capsule networks(NCN).The network explores the user reviews according to product details,time,price purchasing factors,etc.,ensuring product quality and *** effective recommendation system is developed using a butterfly optimized matrix factorizationfiltering *** the system’s efficiency is evaluated using the Rand Index,Dunn index,accuracy,and error rate.

关键词： Recommendation system customer reviews amazon product kaggle dataset batch normalized capsule networks butterfly optimized matrix factorizationfiltering

Kinetics and mechanistic investigation of epoxide/CO2 cycloaddition by a synergistic catalytic effect of pyrrolidinopyridinium iodide and zinc halides

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Journal of Energy Chemistry 2019年第10期28卷 35-42页

作者： abdul Rehman Valentine C. Eze m.F.m.Gunam Resul Adam Harvey School of Engineering Merz CourtNewcastle UniversityNewcastle Upon Tyne NE1 7RUUK Department of Chemical and Polymer Engineering University of Engineering and Technology LahoreFaisalabad CampusPakistan

Formation of styrene carbonate (SC) by the cycloaddition of CO2 to styrene oxide (SO) catalysed by pyrrolidinopyridinium iodide (PPI) in combination with zinc halides (ZnCl2, ZnBr2 and ZnI2) was investigated. Complete conversion of the SO to SC was achieved in 3 h with 100% selectivity using 1/0.5 molar (PPI/ZnI2) catalyst ratio under mild reaction conditions i.e., 100℃ and 10 bar CO2 pressure. The synergistic effect of ZnI2 and PPI resulted in more than 7-fold increase in reaction rate than using PPI alone. The cycloaddition reaction demonstrated the first-order dependence with respect to the epoxide, CO2 and catalyst concentrations. moreover, the kinetic and thermodynamic activation parameters of SC formation were determined using the Arrhenius and Eyring equations. The positive values of △H(42.8 kJ mol^-1) and △G(102.3 kJ mol^-1) revealed endergonic and chemically controlled nature of the reaction, whereas the large negative values of △S(-159.4 J mol^-1 K^-1) indicate a highly ordered activated complex at the transition state. The activation energy for SC formation catalyzed by PPI alone was found to be 73.2 kJ mol^-1 over a temperature range of 100-140℃, which was reduced to 46.1 kJ mol^-1 when using PPI in combination with ZnI2 as a binary catalyst. Based on the kinetic study, a synergistic acid-based reaction mechanism was proposed.

关键词： Cycloaddition CO2 utilization Cyclic carbonates Homogeneous catalysis Activation energy

Changes in Nutrient-Homeostasis and Reserves metabolism During Rice Seed Priming:Consequences for Seedling Emergence and Growth

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Agricultural Sciences in China 2010年第2期9卷 191-198页

作者： muhammad Farooq Shahzad m A Basra abdul Wahid Nazir Ahmad Department of Agronomy University of AgricultureFaisalabad Department of Crop Physiology University of AgricultureFaisalabad Department of Botany University of AgricultureFaisalabad

In this study influence of different seed priming treatments on the nutrient-homeostasis and reserve metabolism during seedling emergence and growth of rice were determined. Seed priming treatments included pre-germination, hydropriming for 48 h, osmohardening with KCl and CaCl2, ascorbate priming and hardening. All treatments shortened the emergence time and enhanced the energy and index of seedling emergence. Seedlings from primed seeds had greater length, number of roots and fresh and dry mass than control. Among the treatments, CaCl2, ascorbate and KCl proved better in enhancing emergence and seedling growth. Seed priming changed the pattern of N and Ca^2＋ homeostasis both of the seeds and seedlings, which were associated to enhancing s-amylase activity and reducing sugars content. Positive correlations of seedling attributes with nutrient content suggested that as a result of seed priming, most of N and Ca^2＋ were partitioned to embryo, which enhanced seedling emergence and subsequent growth of rice seedlings.

关键词： rice α-amylase activity nutrient homeostasis seedling emergence seedling vigor

A Critical Review of Social Resilience Properties and Pathways in Disaster management

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International Journal of Disaster Risk Science 2021年第6期12卷 790-804页

作者： A.m.Aslam Saja melissa Teo Ashantha Goonetilleke abdul mZivath Faculty of Engineering.South Eastern University of Sri Lanka Oluvil 32360Sri Lanka Science and Engineering Faculty.Queensland University of Technology(QUT) Brisbane.Queensland 4001Australia Zedz Consultants Pty Ltd HillcrestQLD 4118Australia

Resilience as a concept is multi-faceted with complex *** a disaster context,there is lack of consistency in conceptualizing social *** results in ambiguity of its definition,properties,and pathways for assessment.A number of key research gaps exist for critically reviewing social resilience conceptualization,projecting resilience properties in a disaster-development continuum,and delineating a resilience trajectory in a multiple disaster *** review addressed these research gaps by critically reviewing social resilience definitions,properties,and *** review found four variations in social resilience definitions,which recognize the importance of abilities of social systems and processes in disaster phases at different levels.A review of resilience properties and pathways in the disaster resilience literature suggested new resilience properties—“risk-sensitivity”and“regenerative”in the timeline of two consecutive *** review highlights a causal pathway for social resilience to better understand the resilience status in a multi-shock scenario by depicting inherent and adaptive resilience for consecutive disaster scenarios and a historical case study for a resilience trajectory in a multiple disaster *** review findings will assist disaster management policymakers and practitioners to formulate appropriate resilience enhancement strategies within a holistic framework in a multi-disaster timeline.

关键词： Community resilience Disaster resilience Resilience assessment Resilience measurement Resilience properties

matter accretion onto Einstein-aether black holes via well-known fluids

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Chinese Physics C 2020年第6期44卷 182-196页

作者： m.Umair Shahzad Rafaqat Ali abdul Jawad Shamaila Rani Department of mathematics University of OkaraOkaraPakistan Department of mathematics COMSATS University IslamabadLahore-CampusPakistan

We study matter accretion onto Einstein-aether black holes by adopting the Hamiltonian *** general solution of accretion is discussed using the isothermal equation of *** types of fluids are considered,including ultra-relativistic,ultra-stiff,sub-relativistic,and radiation fluids,and the accretion process onto Einstein-aether black holes is *** behavior of the fluid flow and the existence of critical points is investigated for Einstein-aether black *** further discuss the general expression and behavior of polytropic fluid onto Einstein-aether black *** most important feature of this work is the investigation of the mass accretion rate of the above-mentioned fluids and the comparison of our findings with the Schwarzschild black hole,which generates particular ***,the maximum mass accretion rate occurs near the Killing and universal horizons,and the minimum accretion rate lies between them.

关键词： black hole accretion homo-clinic orbits

A study of the impact of environmental loads that penetrate a passive skylight roofing system in malaysian buildings

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Frontiers of Architectural Research 2014年第2期3卷 178-191页

作者： Karam m. Al-Obaidi mazran Ismail abdul malek abdul Rahman School of Housing Building & Planning Universiti Sains Malaysia Penang 11800 Malaysia

A passive skylight system is a significant building design element that provides an ideal condition for interior spaces. However, the use of this system is limited to specific climatic regions because of its considerable effect on the indoor environment. malaysia is a tropical country that has favorable natural benefits, such as solar geometry and natural light, which can brighten building interiors throughout the year. However, harnessing this benefit affects spaces, especially those in single-story buildings, because of excessive natural loads. This study reviews a concept to understand the passive behavior of solar radiation in the form of light and heat that falls on, interacts with, and is emitted from a skylight system in a single-story building. The study method is theoretically based on descriptive analysis to assess design requirements. The review shows that designs grounded on the physical aspects of climate （influenced variables）, materials （design variables）, and human comfort （affected variables） in one process （ESI） can develop the architectural way of thinking rather than estimate the condition based on a limited perspective. This assumption indicates that the adoption of this concept in the preliminary design stage will enable designers to balance the building environment effectively.

关键词： Skylight system Tropics Solar radiation Light Heat malaysian builtenvironment

Passive cooling techniques through reflective and radiative roofs in tropical houses in Southeast Asia:A literature review

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Frontiers of Architectural Research 2014年第3期3卷 283-297页

作者： Karam m.Al-Obaidi mazran Ismail abdul malek abdul Rahman School of Housing Building and PlanningUniversiti Sains Malaysia

Cooling is one of the major concerns in building tropical *** problem is exacerbated by the heat gain of the roof,which constitutes 70%of the total heat *** passive cooling technique is one of the innovative practices and technologies that provide buildings with comfortable conditions through natural *** and radiative processes are the methods used to decrease heat gain by facilitating the elimination of excess heat in a building's interior to maintain a comfortable *** that the potential of these techniques vary from region to region,their application in the tropics should be *** these approaches in detail allows us to rethink how to effectively adapt these techniques to overcome the build-up of heat in modern tropical houses in Southeast *** study reviews the physical characteristics of these approaches to guide architects and building *** indicate a great reduction in operational ***,the significant differences in the performance of colour and material properties should be considered,given that the selected approach strongly affects the required thermal conditions of a building.

关键词： Passive cooling Reflective roof Radiative roof Southeast Asia Tropical houses

Atom microscopy via Dual Resonant Superposition

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Communications in Theoretical Physics 2015年第12期64卷 741-746页

作者： m.S.abdul Jabar Bakht Amin Bacha m.Jalaluddin Iftikhar Ahmad Department of Physics University of Malakand

An m-type Rb^(87) atomic system is proposed for one-dimensional atom microscopy under the condition of Electromagnetically Induced ***-localization of the atom in the absorption spectrum while its delocalization in the dispersion spectrum is observed due to the dual superposition effect of the resonant *** observed minimum uncertainty peaks will find important applications in Laser cooling,creating focused atom beams,atom nanolithography,and in measurement of the center-of-mass wave function of moving atoms.

关键词： atom microscopy resonant fields susceptibility