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71.
Qader Mohammed Redha Khan Shahnawaz Kamal Mustafa Usman Muhammad Haseeb Mohammad 《Environmental science and pollution research international》2022,29(12):17346-17357
Environmental Science and Pollution Research - Global warming and climate change have become one of the most embarrassing and explosive problems/challenges all over the world, especially in... 相似文献
72.
Din Nazlm lkyaz Tosun Alper Umut Batrkc Esra zer Mustafa Burat Frat 《Journal of Material Cycles and Waste Management》2022,24(1):224-236
Journal of Material Cycles and Waste Management - This paper reports physical and physicochemical routes for the recycling of gold, silver, and copper from waste printed circuit boards (WPCBs). The... 相似文献
73.
Irfan Daniyal Tang Xuan Abdulhasanb Maryam Jawad Zaidi Muhaned Mustafa Yasser Fakhri Jasem Hadeer Altimari Usama S. Chem Cui 《Journal of Polymers and the Environment》2022,30(10):4201-4209
Journal of Polymers and the Environment - In this paper, new epichlorohydrin crosslinked 2,4-dihydroxybenzaldehyde Schiff base chitosan@SrFe12O19 magnetic nanocomposite (EP-DBSB-CS@SrFe12O19) was... 相似文献
74.
Fixed-bed column sorption of borate onto pomegranate seed powder-PVA beads: a response surface methodology approach 总被引:1,自引:0,他引:1
Pomegranate seed powder (PS) was functionalized with polyvinyl alcohol (PVA) and utilized for boron removal from the aqueous system. Results of Brunauer--Emmett--Teller (BET) surface area analysis and Boehm titration indicated notable decrease in total surface area and increase in acidic surface functional groups of PS after PVA modification. Enhanced sorption is indicative of complex formation between diol groups of the pomegranate seed powder--polyvinyl alcohol (PS–PVA) and borate ions. Under column test, the saturated sorption capacity of boron was noted to be dependent on flow rate and bed height. The developed central composite design (CCD) was adequate to elucidate the sorption mechanism. Mathematical modeling of the column data was conducted, and a modified-dose-response model was the most suitable to describe the breakthrough curve and observed to be consistent with CCD analysis. This is further supported by extensive error analyses conducted between the model predicted and experimental data. 相似文献
75.
Bahar Turkyilmaz Yusuf Kurucu Mustafa Bolca Unal Altinbas Tolga Esetlili Bahriye Gulgun 《国际发展与全球生态学杂志》2013,20(3):278-286
There has been a major urban shift of population in Turkey over the last century. Most people lived in rural areas until 1960, but now more than half live in urban areas. This trend has continued over the last 20 years, as families moved further away from city centres to find houses in the country, and this has caused land use to change rapidly. In decision-making studies to protect nature areas, rating and assessment of ecological data by scientific verification is difficult due to the huge volume and diversity of data. Therefore, the search for the most suitable and applicable method to achieve physical planning based on ecological understanding has been sought. The necessity for numerous parameters to be taken into account has stimulated the use of geographic information systems (GIS). This study assesses the usefulness of a GIS-based model in the protected area of Kaynaklar County, to the south of the city of Izmir. Existing cultural and natural land-use types, as well as soil, hydrologic, geologic and geomorphologic data layers (future classes) were gathered from field observation and using Landsat and IKONOS satellite images, and transferred to a database according to GIS rules. Index values were determined by taking impact on attributes of natural protection as a priority and these were attached to each feature class. Layers of data were merged by spatial intersection methods and new polygons were created for both cultural and natural features. A three-grade final map of the study area was generated using total index values of each new polygon. 相似文献
76.
77.
Sandbars are critical to the cross-shore movement of sediment. Prediction of cross-shore sandbar volumes requires knowledge about the functional relationship of sediment transport rate conditions with waves, currents, base slope, sediment property and water depth. In this study, experiments on cross- shore sediment transport were carried out in a laboratory wave channel for initial base slopes of 1/8, 1/10 and 1/15. Using regular waves with different deep-water wave steepness generated by a pedal-type wave generator, bar volumes caused by cross-shore sediment transport are investigated for beach materials with the medium diameter of d50?=?0.25, 0.32, 0.45, 0.62 and 0.80 mm. A non-dimensional equation for sandbar volume was obtained by using linear and non-linear regression methods through the experimental data and was compared with previously developed equations in the literature. The results have shown that the experimental data fitted well to the proposed equation with respect to the previously developed equations. 相似文献
78.
Marine and terrestrial ecosystems are so fundamentally different in some aspects that many of the issues concerning biodiversity
cannot be interpreted using a single theory of common application to all ecosystems. Their limitation is evident when it comes
to highly biodiverse and interconnected marine ecosystems such as coral reefs. Trophic links are a major factor, but space,
breeding, shelter from predators, environmental cues, behavior ingrained in genotypes, genetic variability, mutations, and
connectivity of marine critical habitats are also important. The importance of the connectivity of habitats such as coral
reefs, seagrasses, and mangrove in biodiversity preservation should be recognized. Migratory species require corridors for
gene flow and that influences diversity. The existing theories do not address the biodiversity issues related to life in the
abyssal plains and deep sea trenches and the challenge posed by climate change. An accurate understanding of marine biodiversity
requires comprehensive knowledge of ecological interrelationships and new perspectives that reflect the reality of global
environmental change. 相似文献
79.
Hypoxic events frequently occur in the aquatic environment in association with micro pollutants, including heavy metals. Only a few studies are however available on the uptake and biological responses of heavy metals under hypoxic conditions. To elucidate the phenomenon, mirror carp Cyprinus carpio L. (16.13-16.22 g) were exposed chronically to dietary copper (Cu; 250 and 500 mg kg dry wt.−1) for 30 d under normoxic (8.25 mg O2 L−1) and hypoxic (∼3 mg O2 L−1) conditions and adopting an integrated approach, sub-lethal biomarker responses were determined at different levels of biological organisation. Level of oxidative DNA damage (as determined by modified Comet assay) showed strong significant difference following exposure to dietary Cu level under normoxic (1.6-fold) as well as under hypoxic condition at both Cu levels (2.1 and 2.5-folds respectively). Significant difference was also observed for haematological parameters (i.e. increased red and white blood cells, haematocrit value and haemoglobin concentration). Quantitative histology revealed alterations in tissues (i.e. liver and gills) for hypoxic and all dietary Cu treatment groups under both normoxic and hypoxic conditions suggesting a compensatory response to these organs (p < 0.05). The order of Cu accumulation in tissues (as determined by ICP-OES) was liver > intestine > kidney > gill. Interestingly, SGR under both normoxic and hypoxic conditions reduced with elevating Cu levels (p = 0.019). Overall, the results provide evidence for enhanced toxicological responses in fish following exposure to Cu either alone or in combination with hypoxic condition and lends support to the evolving viewpoint that many water quality guidelines should be revisited in terms of new ecotoxicological criteria. 相似文献
80.
Ugranli Tugba Gungormus Elif Kavcar Pınar Demircioglu Eylem Odabasi Mustafa Sofuoglu Sait C. Lammel Gerhard Sofuoglu Aysun 《Environmental science and pollution research international》2016,23(22):22500-22512
Environmental Science and Pollution Research - Semi-volatile organic compounds were monitored over a whole year, by collection of gas and particle phases every sixth day at a suburban site in... 相似文献