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排序方式: 共有49条查询结果,搜索用时 718 毫秒
1.
Hassan Hisham Soliman El-Kamash Ahmed Mohamed Ibrahim Haneen Abdel-Salam 《Environmental science and pollution research international》2019,26(25):25641-25655
Environmental Science and Pollution Research - A composite polymer, hydroxyapatite/poly(acrylamide-acrylic acid), was synthesized by gamma-induced polymerization. The factors affecting the sorption... 相似文献
2.
Ahmad Tasneem Nazar Sonaina Ahmad Kafeel Khan Zafar Iqbal Bashir Humayun Ashfaq Asma Munir Mudasra Munir Zunaira Hussain Khadim Alkahtani Jawaher Elshikh Mohamed Soliman Nadeem Muhammad Malik Ifra Saleem 《Environmental science and pollution research international》2021,28(23):29110-29116
Environmental Science and Pollution Research - The instant endeavor was undertaken to monitor copper (Cu) contents in water, soil, forage, and cow’s blood impacted by heavy automobiles in... 相似文献
3.
Emam Wiame Waheed El-Kafrawy Sameh Bakr Soliman Kareem Mohamed 《Environmental science and pollution research international》2021,28(16):20140-20156
Environmental Science and Pollution Research - This study is the first in forming an integrated up-to-date spatial analysis linking heavy metal contamination among three different compartments of... 相似文献
4.
M. F. M. Soliman 《Environmental monitoring and assessment》2012,184(12):7677-7685
This study aimed to investigate the possible effects of heavy metal pollution across sites and some biological factors on helminth communities infecting the lizard, Chalcides ocellatus. The possibility of heavy metal accumulation by such helminths was also investigated. A total of 202 C. ocellatus were collected from three different sites (industrial, rural, and urban systems) in Ismailia governorate, Egypt, during summer 2009. The lizards were classified according to their sex and size and were examined for the intestinal helminths. Heavy metal levels were detected in the intestinal tissue of the lizards and the recovered helminths. Species richness was 6, 5, and 3 in rural, urban, and industrial systems, respectively. Significant site variations regarding infection prevalence, intensity, and abundance were encountered at different levels. Some noticeable effects of the host size were found. The significant differences found between the metal levels of the intestinal tissues and the recovered helminths and the other relations found in this study may be indications for a possible metals accumulation capacity by helminths. The cestode Oochoristica tuberculata could be a promising biomonitor for Cu and Pb, while the intestinal nematodes were less sensitive to the pollution. Differences in the accumulation capacity may be attributed to the intensity of infection, parasite species, and metal. The observed patterns of distribution and occurrence of helminths and the metals accumulation capacity reflect the need for more studies since this study proposes the model intestinal helminth/C. ocellatus as another promising bioindication system in the terrestrial habitat, especially in areas where the lizard C. ocellatus are available. 相似文献
5.
The Traffic Air Quality (TAQ) model is a simple tool to estimate traffic fine particulate emissions on roadways (g/km) and can be used for both real-time analysis and for localized conformity analysis ("hot-spot" analysis for nonattainment areas) as defined by 40 CFR 93.123. This paper is a follow-up to a study published earlier regarding the development of the TAQ model. This paper shows how local air quality levels can be a factor in traffic management in nonattainment areas. Similar to the industrial source quotas measured in tons per year, it is proposed that road segments are to be assigned emission quotas (or TAQ indices) measured in pollutant mass emitted per road length (g/km) above which traffic-measures have to be taken to reduce the fine-particulates emissions on such road links. The TAQ model as well as traffic-rerouting measures along with the Intelligent Transportation System (ITS) protocols can be used to have a real-time control of the traffic conditions along expressways to maintain the fine-particulates emissions below the quota assigned per road link and consequently improving the over all local air quality in nonattainment areas. 相似文献
6.
A.H. El‐Sebae E.E. Enan S.A. Soliman S. El‐Fiki E. Khamees 《Journal of environmental science and health. Part. B》2013,48(4):475-491
Abstract The three S‐n‐propyl phosphates and phosphothioates: RH 218, profenofos and prothiophos were compared with fenitrothion in their potential as inhibitors of rat liver and brain AChE. Fenitrothion was more potent as an inhibitor than the three S‐n‐propyl derivatives. Incubation of hepatic protein enhanced ChE inhibition in brain in the case of fenitrothion, while it reduced the inhibitory effect of the S‐n‐propyl derivatives. On the other hand, the four organophosphorus esters caused hypoglycemia in both male and female rats and also reduced their blood urea with different degrees. 相似文献
7.
Biodiversity and Conservation of Plants in Brazil 总被引:4,自引:1,他引:3
ANA MARIA GIULIETTI§ RAYMOND M. HARLEY† LUCIANO PAGANUCCI DE QUEIROZ MARIA DAS GRAÇAS LAPA WANDERLEY‡ CASSIO VAN DEN BERG 《Conservation biology》2005,19(3):632-639
Abstract: With more than 56,000 species (excluding fungi), Brazil has one of the richest floras in the world—nearly 19% of the world flora. Our knowledge of the diversity and status of nonvascular plants in Brazil is still fragmentary, although localized studies on algae have revealed loss of species resulting from environmental pollution. Emphasis on local floral surveys, rather than wider taxonomic studies, has obscured estimates of national totals for most taxonomic groups. Knowledge of angiosperms, especially monocotyledons (of which 45% of the species are endemic), is more complete than most. For this group figures are more reliable, with some distribution patterns, endemism levels, and centers of diversity identified. Much, however, still awaits discovery. Coordinated efforts to catalog Brazil's flora are in progress and include projects such as the conservation priority-setting workshops of the Brazilian Ministry of the Environment, which have identified key conservation areas in the major biomes; development of threatened species lists for plants; and the assembly of type data on species of northeastern Brazil through the Darwin Initiative—all of which greatly assist in increasing our knowledge. These initiatives also underline the urgent need to expand the numbers and geographic spread of projects on plant systematics and taxonomy in Brazil, a measure that demands adequate provision of funding and training programs for plant specialists. Finally, Brazil's environmental agency (IBAMA) could play a proactive role in opening protected areas under its jurisdiction, thereby facilitating botanical research by university departments and research institutes. 相似文献
8.
ASSAULT PREVENTION AS SOCIAL CONTROL: WOMEN SEXUAL ASSAULT PREVENTION ON URBAN COLLEGE CAMPUSES 《Journal of environmental psychology》1995,15(4)
Sexual assault on U.S.A. college campuses is increasingly recognized as an urgent and pervasive national problem. To prevent assault, school administrators and individual women promote and adopt safety strategies that often compromise women's free and independent use of the campus environment. Such strategies may fail to correspond to the actual nature of sexual assault on campus. Based on open-ended interviews with college personnel and women students, this study examines sexual assault and personal crime prevention strategies at two midwestern, urban universities. School and individual strategies are characterized according to type, goals, and orientation. Findings explore the relationship of strategies to sexual assault on campus, and implications of strategies for women's use of public space. Conclusions suggest means to increase real safety while enhancing women's freedom and mobility on and near campus. 相似文献
9.
S A Soliman N S Ahmed K S el-Gendy A S el-Bakary A H el-Sebae 《Journal of environmental science and health. Part. B》1986,21(5):401-411
The susceptibility of wild mallard ducklings to the delayed neurotoxic effect of the neurotoxic organophosphorus insecticides cyanofenphos and leptophos was evaluated following a daily dosing regimen. Ducklings were treated daily with either cyanofenphos or with leptophos at different dose levels for 90 days, or until they died, or became paralyzed. A control group of ducklings given corn oil at 1 ml/kg daily for 90 days was used for comparison. All treated birds were observed daily for any clinical signs of neurotoxicity during the course of this study. All of the surviving ducklings that were treated with cyanofenphos at 4 mg/kg/day or leptophos at 10 mg/kg/day developed clinical signs of delayed neurotoxicity after 7 to 11 weeks of intoxication. Symptoms included leg weakness, ataxia, severe ataxia and paralysis. The observed clinical signs were confirmed by histological changes found in the spinal cords of the treated birds. These changes were of the type associated with organophosphorus-induced delayed neuropathy (OPIDN). These results demonstrate that wild mallard ducklings are susceptible to OPIDN and this avian species can be used in screening organophosphorus compounds for such effect. 相似文献
10.
A H El-Sebae S A Soliman N S Ahmed 《Journal of environmental science and health. Part. B》1979,14(3):247-263
Cyanofenphos (surecide)(R), 25% E.C., O-ethyl O-(4-cyanophenyl) phenylphosphonothioate, was orally administered to one year old lambs at sublethal doses of 1 mg, 2 mg and 4 mg active ingredient kg-1 day-1 for time intervals 60, 45 and 30 days respectively. Irreversible paralytic ataxia symptoms of delayed neuropathy appeared at about 80, 50 and 30 days respectively. In weekly blood samples, AChE (acetylcholine-sterase) and MAO (monoamine oxidase) activities were inhibited depending upon level of dosing and time interval. However no significant correlation was found between the extent of plasma AChE and MAO inhibition and the onset of ataxia symptoms. In brain samples from ataxiated animals, AChE, MAO and NTE (neurotoxic esterase) activities were assayed simultaneously with untreated animal. Direct correlation was shown between in vivo NTE inhibition and the occurrence of delayed neuropathy. Cyanofenphos is the third compound of the phenyl phosphonothioate type on the market showing delayed neuropathy together with Leptophos and EPN. 相似文献