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Plantago major treatment enhanced innate antioxidant activity in experimental acetaminophen toxicity

Asian Pacific Journal of Tropical Biomedicine 2015年第9期5卷 703-707页

作者： Farida Hussan Rina Haryani Osman Basah mohd rai zul mohd yusof Nur Aqilah Kamaruddin Faizah Othman Anatomy Department Faculty of Medicine Universiti Kebangsaan Malaysia

Objective: To determine the ef ect of Plantago major(P. major) extract on the liver injury following acetaminophen(APAP) toxicity. Methods: The male Sprague Dawley rats(n = 38) were randomly divided into normal control(n = 6) and experiment(n = 32) groups. The latter was subdivided into four groups and induced with APAP(1 000 mg/kg) per oral, followed by P. major extract and N-acetylcysteine orally to the respective groups for six days. Results: On the seventh day, the serum bilirubin, liver enzymes and tissue malondialdehyde were increased in APAP groups whereas the total protein in serum, tissue superoxide dismutase and glutathione levels were reduced. The plant extract treatment reduced the histological deteriorations such as aggregation of hepatocellular cords, formation of binucleated cells and vacuolisation of the cells with scanty cytoplasm. It also revealed signii cant reduction of malondialdehyde and increased level of superoxide dismutase and glutathione. The i ndings in the extract treated groups were comparable to the group treated with N-acetylcysteine. Conclusions: In conclusion, P. major can enhance innate antioxidant activity and ameliorate the APAP-induced liver injury.

关键词： Plantago major Acetaminophen Liver injury Oxidative stress Antioxidants

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Experimental assessments of methanol-based foaming agent in latex modified foamed binders and warm asphalt mixtures

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Journal of Road Engineering 2022年第1期2卷 84-97页

作者： mohd Rosli mohd Hasan Tai Guo Hainian Wang zul Fahmi Mohamed Jaafar Zhanping You School of Civil Engineering Universiti Sains Malaysia(Engineering Campus)Nibong Tebal 14300Pulau PinangMalaysia School of Highway Chang'an UniversityXi'an 710064China Department of Civil and Environmental Engineering Michigan Technological UniversityHoughtonMI 49931USA

Latex is one of the natural rubbers that is used to enhance the performance of asphalt pavement for the last few *** presence of latex,which is categorized as an elastomer,helps to improve pavement performance and ***,higher viscosity of latex modified asphalt binder increases the production-temperatures of asphalt mixture,thus consuming higher energy during asphalt mixture’s production *** this study,the effectiveness of methanol as an energy-efficient foaming agent was assessed to reduce the viscosity and enhance the workability of the modified asphalt *** basic and rheological properties of the asphalt binders were determined through multiple laboratory tests including expansion ratio and half-life,rotational viscosity,softening point,torsional recovery,and dynamic shear *** properties of asphalt mixtures were assessed through the service characteristics,mechanical performance,and moisture resistance *** was found that the presence of latex results in an approximately twofold higher expansion ratio and a lower half-life of the asphalt binder at about the same *** the rotational viscosity test,the application of methanol into asphalt binder decreased the viscosity and led to better workability,despite the addition of latex as an asphalt *** application of methanol into asphalt binder improved the workability of mixture samples and lowered the compaction energy of the compaction process,which are the crucial criteria for a better mixing and compaction *** foamed asphalt mixtures with latex show much higher resistance to moisture damage and stiffness than control sample even though they were prepared at a lower temperature.

关键词： Foaming agent Foaming technique Latex Lower energy Methanol Natural rubber

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Thermal performance of cooling strategies for asphalt pavement: A state-of-the-art review

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Journal of Traffic and Transportation Engineering(English Edition) 2021年第3期8卷 356-373页

作者： Salam Ridha Oleiwi Aletba Norhidayah Abdul Hassan Ramadhansyah Putra Jaya Eeydzah Aminudin mohd zul Hanif Mahmud Azman Mohamed Ahmed Abdulameer Hussein School of Civil Engineering Faculty of EngineeringUniversiti Teknologi MalaysiaJohor Bahru 81300JohorMalaysia Department of Civil Engineering College of EngineeringUniversiti Malaysia PahangGambang 26300PahangMalaysia

Asphalt pavements absorb and store more heat than natural surfaces. Thus, high temperatures are emitted from conventional asphalt pavements, subsequently releasing heat into the atmosphere and contributing to the urban heat island(UHI) phenomenon. Several cool pavement strategies, including the provision of additives and materials, surface coating and layer design, have been introduced to reduce the impact of UHI. This article provides a detailed review of the thermal properties of these mitigation measures in the context of cool asphalt pavements. The literature can be divided into three segments. The first segment discusses the impact of pavements on UHI and heat transfer mechanisms in pavements. The second segment focuses on various thermo physical properties that play an important role in mitigation measures;these properties include albedo(a), emissivity(e),solar reflective index, thermal conductivity(k), specific heat capacity(Cp) and thermal diffusivity. The third segment discusses cool asphalt pavement strategies which specifically cover the ability of the pavement to absorb and reflect solar energy on the basis of the materials and treatments used. The literature reveals that cooling strategies that deal with the pavement surface are important due to its direct incident solar effect, which depends on surface colour, material, shape and roughness. By using high-albedo and high-emissivity surfaces, the pavement can store less heat and lower the surface temperature. These results can also be achieved by designing the materials and pavement layers with low thermal conductivity and high specific heat capacity to reduce thermal diffusivity and pavement temperature and thus combat the heat radiated by the asphalt pavement.

关键词： Road engineering Urban heat island Cool pavements Asphalt pavement Thermal properties

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Temperature Dependent Phase Behavior of Pseudo-Ternary Thiourea X-100 Surfactant +1-Hexanol/Oil/Water Systems

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Open Journal of Physical Chemistry 2012年第3期2卷 169-175页

作者： mohd zul Helmi Rozaini School of Environmental Sciences University of East Anglia Norwich Norfolk UK

Temperature dependent phase behavior of Pseudo-ternary Thiourea X-100 + 1-hexanol (1:5 molar ratios)/oil/water systems is reported. The influence of nature of hydrocarbon oil and type of electrolytes (weak as well as strong) has been investigated on the temperature induced phase behavior of the ternary system. At surfactant concentration, Φs = 40%, a “nose shaped” microemulsion region is observed. Below one-phase microemulsion region, Lα phase appears. The presence of NaCl decreases the domain size of 1Φ micellar region whereas oxalic acid first decreases the domain below Φw 18 in the lower boundry of the phase diagram. The critical weight fraction of water, Φwcri decreases in presence of both electrolytes. However, Φwmax increases in presence of oxalic acid and remains constant in presence of NaCl as compared to salt free system. Furthermore, when cyclohexane was replaced by a longer straight chain hydrocarbon, dodecane, the domain of the one-phase microemulsion region is tremendously increased.

关键词： Surfactant Amphiphile Co-Surfactant Microemulsion Micelles Reverse Micelles Phase Behavior Phase Diagram Thiourea X-100 1-Hexanol

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