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121.
Bhatia Saurabh Al-Harrasi Ahmed Behl Tapan Anwer Md. Khalid Ahmed Mohammed Muqtader Mittal Vineet Kaushik Deepak Chigurupati Sridevi Kabir Md. Tanvir Sharma Pritam Babu Chaugule Bhupal Vargas-de-la-Cruz Celia 《Environmental science and pollution research international》2022,29(10):14380-14392
Environmental Science and Pollution Research - Several studies have suggested the direct relationship between skin complications, air pollution, and UV irradiation. UVB radiations cause various... 相似文献
122.
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
123.
Mohammed A. Khairy 《Environmental monitoring and assessment》2013,185(1):441-455
Although high concentrations of trace organic pollutants were recorded along the Egyptian Mediterranean Coast and its corresponding coastal wetlands, no published data are available for the levels of phenolic compounds. Thus, this work aimed to investigate the levels of phenolic compounds in sediments of a heavily polluted coastal wetland (Lake Maryut, Egypt). For that purpose, a method was optimized for the extraction and detection of chlorophenols, methylphenols, and nitrophenols in sediments using GC-MS. Sediments were extracted with 0.1 M NaOH/methanol by sonication. Cleanup of sediment extracts using liquid–liquid extraction and SPE was found important to remove most of the interfering co-extracts. The proposed analytical methodology was validated by analysis of matrix spikes. Detection limits were 0.063–0.694 μg/kg dw for sediments. Good recoveries (70–110%) and precision values (RSD?<?20%) were obtained from the fortification experiments at the parts per billion level in sediments. The method was applied to investigate the level of contamination with phenols in 19 sediment samples from Lake Maryut. Results revealed that higher concentrations were observed in the main basin (MB) of Lake Maryut affected by the discharge of effluents from a primary wastewater treatment plant, direct discharge of industrial effluents, domestic wastes, and agricultural effluents from Qalaa Drain (QD). Chlorophenols (CPs) were the major group detected in the lake sediments followed by methylphenols (MPs) and nitrophenols (NPs). CPs were dominated by 2-, 4-, and 3-chlorophenols. Concentrations of CPs were higher at the north and northwestern parts of the MB indicating the influence of industrial effluents discharged into the lake. On the other hand, higher concentrations of NPs were observed at the south and southwestern parts of the MB, which is subjected to the discharge of agricultural and domestic effluents via QD. Results of the risk assessment revealed that phenol, cresols, 2,4-dinitrophenol, 4-NP, 2-CP, 2,3,4,6-tetrachlorophenol and 2,4-dimethylphenol are contaminants of concern and that adverse ecological effects could possibly occur to benthic species from the exposure to these pollutants in Lake Maryut and thus phenols should be included in monitoring and pollution prevention programs in the Egyptian aquatic environment affected by anthropogenic activities. 相似文献
124.
125.
The purpose of the present study was to examine how the mix of ability, experience, and personality impacts three types of team performance: technical‐administrative task performance, leadership task performance, and contextual performance. Relationships were tested using data collected from student management teams, who were required to plan and supervise the preparation and service of meals in a cafeteria‐style dining room patronized by university students, staff, and faculty. Results revealed that both team‐ and task‐related composition variables predicted leadership and contextual performance. Specifically, grade point average was significantly related to technical‐administrative task performance, and extraversion, neuroticism, and grade point average were related to leadership task performance. Agreeableness and restaurant experience predicted contextual performance. Surprisingly, conscientiousness did not account for significant variance in any of the three types of performance measured. The implications of these findings for the study of team performance in organizations are discussed. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献
126.
Al-Tamimi Jameel Ebaid Hossam Hassan Iftekhar Alhazza Ibrahim M. Hailan Waleed Al-Khalifa Mohammed 《Environmental science and pollution research international》2021,28(24):31138-31150
Environmental Science and Pollution Research - Many active molecules used in the development of new drugs are produced by ants. Present study assessed antioxidant and anti-inflammatory properties... 相似文献
127.
Mohammed Matouq 《Local Environment》2000,5(4):415-433
The ISO 14001 implementation process among certified firms in China was examined by conducting a questionnaire survey distributed to all certified firms as of December 1998. Results showed that the ISO 14001-based environmental management system (EMS) has a significant effect on firms' daily environmental activities and performance. Recycling, natural resource consumption and released pollutants have been managed in a better way and, in some cases, pollutants have been reduced. The study showed that firms' main targets for adopting the system were to: enhance the firm's public image; enhance employees' environmental awareness; improve the EMS inside the firm; improve the environmental aspects and performance inside the firm; and improve relations with government offices and local citizens. ISO 1400-based EMS implementation showed that it is a promising tool for helping build a better partnership between three main stakeholders, government, local citizens and enterprises. The system has enabled firms to consider the role of the local people in a more effective way. For example, special consideration is given to involving local citizens in health and emergency preparedness during firms' daily environmental activities. Moreover, enhancing environmental awareness among the local citizens and giving more consideration to co-operation with other firms from the same industrial groups are reported by certified firms. Finally, there are strong demands for government support to build more reliable information systems, ISO 14001-related research, more incentives for eco-labelling and tax exemptions. 相似文献
128.
Smith AH Pinkard EA Stone C Battaglia M Mohammed CL 《Environmental monitoring and assessment》2005,111(1-3):243-256
Fungal pathogens, browsing mammals, birds, insects, nutrient deficiencies, drought, frost and waterlogging are all damaging
agents to plantation species. The subsequent loss in leaf tissue or reduced photosynthetic potential can reduce growth and
potentially lead to tree death. The Crown Damage Index (CDI) was developed in Australia to quantify damage in young eucalypt
plantations. The accuracy and precision of assessing damage at a tree level were determined to ensure the reliability, objectivity
and repeatability of the CDI method. Nine assessors, with varying levels of experience, estimated damage on three plots of
fifty trees each, to obtain an understanding of the subjectivity of assessing damage caused by insects (e.g. Chrysophtharta spp.) and fungal pathogens (e.g. Mycosphaerella spp.) on Eucalyptus globulus. Damage levels were measured by destructive sampling to enable direct comparisons between estimates and damage levels to
be made. The most experienced assessors provided the most repeatable estimates and were generally the most accurate. The incidence
of foliar necrosis was the least subjective measure while defoliation was the most subjective and the least accurate of the
indices measured. All assessors, regardless of experience, were able to predict the Crown Damage Index (a combined index of
all damage classes) to within 12% of measured damage levels. 相似文献
129.
Al Rmalli SW Harrington CF Ayub M Haris PI 《Journal of environmental monitoring : JEM》2005,7(4):279-282
We demonstrate that the non-living, dried roots of the water hyacinth plant [Eichhornia crassipes(Mart.) Solms] can rapidly remove arsenic from water. Atomic absorption spectrometry was used to demonstrate that more than 93% of arsenite (As(iii)) and 95% of arsenate (As(v)) were removed from a solution containing 200 microg As l(-1) within 60 minutes of exposure to a powder produced from dried roots. No difference in removal efficiency was observed between the two oxidation states of As studied. The amount of arsenic remaining in solution was found to be less than 10 microg l(-1) which is the WHO guideline limit value for As in drinking water. The presence of arsenic in drinking water in a number of countries in the developing world has been found to be much higher than the WHO level, affecting the health of millions of people. In this paper, we show that a biomaterial produced from dried water hyacinth roots, a plant that is found in abundant supply in many parts of the world, can provide a simple, effective and yet cheap method for removing arsenic from contaminated water. 相似文献
130.
Behavior of As,Cd, Co,Cr, Cu,Pb, Ni,and Zn at the soil/plant interface around an uncontrolled landfill (Casablanca,Morocco) 下载免费PDF全文
Sofia Fait Said Fakhi Mohammed ElMzibri Omar Ait Malek Bouchra Rachdi Zineb Faiz Hassan Fougrach Wadia Badri Abdelaziz Smouni Mouna Fahr 《补救:环境净化治理成本、技术与工艺杂志》2018,28(4):65-72
The present work undertaken in the environmental context aims to study the distribution of heavy metals in plants that grow naturally around uncontrolled landfills. The study's goal was to identify plants that can be used to remediate contaminated soils. For this purpose, 14 plants species and their rhizospheric soil samples were collected and analyzed for arsenic, cadmium, cobalt, chromium, copper, lead, nickel, and zinc by inductively coupled plasma‐atomic emission spectrometry. The results showed the presence of elevated metal concentrations in soil, many exceeding the regulatory values, and that many species exhibited an ability to accumulate multiple metals in their shoots and roots without sustaining toxicity. This was confirmed by bioconcentration and translocation factors generally higher than 1. 相似文献