Journal of Polymers and the Environment - The present work presents an analysis of the tensile properties of Palm as well as Luffa natural fiber composites (NFC) in high density polyethylene... 相似文献
The nutrient distribution of the Cochin Backwater was studied at 6 stations throughout the year. The depth profiles of phosphorus (inorganic and organic), nitrogen (nitrate and nitrite) and silicon, showed a marked seasonal rhythm, induced by the local precipitation and land runoff. Changes in other environmental features such as temperature, salinity, dissolved oxygen, pH and alkalinity were small during the premonsoon period when the system remains marine-dominated, and large during the monsoon period when the estuary becomes freshwater-dominated. Seasonal changes in the hydrographical conditions of the adjoining coastal waters of the Arabian Sea which influence the backwater system have been discussed. 相似文献
Traditionally, firms tend to incline toward financial performance and profitability to surge shareholder's wealth. In the modern day, in addition to financial performance, innovative and environmental performance has also become a central effort. However, all firms are not flourished in the achievement of financial, innovative, and environmental performance, particularly small‐ and medium‐sized enterprises (SMEs), which need adequate financial resources due to lack of resources and can search for opportunities to boost their performance. This research examines the role of financial availability in financial, innovative, and environmental performance with a mediating role of opportunity recognition. Empirical evidence is collected through structured questionnaires from 347 SMEs operating in the emerging market Pakistan. Hypotheses are tested in Analysis of a Moment Structure (AMOS) using structural equation modeling. Results indicate that satisfactory financial resources significantly contribute to financial and innovative performance but play an insignificant role in environmental performance as well. In addition, firms with enough financial capital recognize new opportunities significantly via opportunity recognition mediator, where partially mediating the relation between financial availability and financial/innovative performance. However, firms fully mediate the link between financial availability and environmental performance. Our research findings recommend CEOs and top managers to utilize their financial resources in an efficient way to achieve the advantage of the new opportunity recognition, superior financial, innovative, and environmental performance. 相似文献
Environmental Science and Pollution Research - Massive discharge of wastes produced by the processing of leather so far confers the most important environmental challenge facing the tanneries... 相似文献
Environmental Science and Pollution Research - Environmental degradation has severely affected the natural cycle of ecosystem. It’s high time now and humans should execute strategies... 相似文献
This study investigated the characteristics of iron corrosion scales in pipes at tube well, overhead tank, and consumers’ end in older untreated water distribution system in Peshawar city, Pakistan. Effect of water quality conditions on corrosion scales and that of scales on drinking water quality in such systems was also assessed by undertaking a comparison with new piped distribution systems. The scales were analyzed for chemical composition and morphology using X-ray diffraction (XRD), inductively coupled plasma (ICP), and a scanning electron microscope (SEM), while water quality was examined for physicochemical and biological characteristics. The main crystalline phases of corrosion scales were goethite, magnetite, siderite, and quartz. From tube well to consumers’ end, goethite increased from 36 up to 48%, quartz declined from 22 to 15%, while magnetite fluctuated and siderite disappeared. Elemental composition of scales showed the deposition of Zn, Al, Mn, Cr, Pb, Cu, As, and Cd with Zn (13.9 g/kg) and Al (3.6 g/kg) in highest proportion. The SEM analysis illustrated the presence of microbial communities indicating the formation of biofilms in the corrosion scales. The significant difference (P <?0.05) in levels of dissolved oxygen (DO), Cl?, SiO44?, electrical conductivity (EC), SO42?, NO3?, alkalinity, hardness, and trace metals between old (DS-O) and new piped systems indicated their role in corrosion scale formation/destabilization and the effect of scale dissolution on water quality. In DS-O, EC, Cu, and Mn were significantly higher (P?<?0.05), whereas turbidity, EC, DO, and SiO44? significantly increased from source to consumers’ end implying a higher dissolution of scales and lowered corrosion rates in DS-O to utilize SiO44? and DO for iron oxidation.
Environmental Science and Pollution Research - Amino sugars (AS) are routinely used as microbial biomarkers to investigate the dynamics of soil carbon (C) and nitrogen (N) under different... 相似文献
The paper deals with bacterial and fungal populations and other pollutants in the indoors of slums, middle class, and upper class dwellings. Both allergenic and nonallergenic organisms have been observed to be higher in slums than in other dwellings. Further, females were more susceptible to various kinds of allergies than males. 相似文献
