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排序方式: 共有362条查询结果,搜索用时 31 毫秒
91.
Iqbal Kashif Hassan Syed Tauseef Peng Hui Khurshaid 《Environmental science and pollution research international》2019,26(15):15153-15161
Environmental Science and Pollution Research - Economic growth in modern-day world get attention primarily through innovation and higher productivity, which places technology and knowledge at the... 相似文献
92.
Saleemi Muhammad Kashif Tahir Muhammad Waseem Abbas Rao Zahid Akhtar Masood Ali Aamir Javed Muhammad Tariq Fatima Zahida Zubair Muhammad Bhatti Sheraz Ahmed Zahoor Ul Hassan 《Environmental science and pollution research international》2019,26(21):21371-21380
Environmental Science and Pollution Research - Cadmium is an important widely distributed heavy metal in the environment due to its several industrial uses, while milk thistle is an important herb... 相似文献
93.
Sabouni Rana Gomaa Hassan 《Environmental science and pollution research international》2019,26(6):5372-5380
Environmental Science and Pollution Research - This research paper presents the results of an experimental investigation of the degradation of three different contaminants including progesterone... 相似文献
94.
Mazlita Yahya You Wei Chen Hwei Voon Lee Wan Hasamudin Wan Hassan 《Journal of Polymers and the Environment》2018,26(7):2825-2844
This study investigates for the first time the feasibility of isolating nanocellulose from several selected feedstocks via a novel Ni(II)-hydrolysis process, including lignocellulosic biomasses (oil palm trunk, banana peel and coconut husk) and processed biomasses (newspaper, tissue paper and cotton linter), with an obtained gravimetric yield ranging from 59.6 to 86.2%. The isolation of nanocellulose products from these selected feedstocks was verified by the successive removal of most of their non-cellulosic components (lignin and hemicellulose) and cellulose amorphous regions, the increase in the crystallinity index and the nanoscale of the individual crystals. Most importantly, the resultant nanocellulose products rendered better thermal stability than that of corresponding original sources, which are highly potential to be utilized as the new renewable sources of reinforcement materials with potential applications in bio-nanocomposites and thermoplastics. Therefore, this work proves the viability of direct production of nanocellulose from a variety of cellulosic sources by using Ni(II)-based transition metal salt catalyst. The results suggested that the concept of waste to wealth could be well executed from the obtained nanocellulose, which are greatly potential for various industrial applications. 相似文献
95.
Mushtaq Muhammad Umair Iqbal Ameena Nawaz Ismat Mirza Cyrus Raza Yousaf Sohail Farooq Ghazanfar Ali Muhammad Arif Khan Aqib Hassan Ali Iqbal Mazhar 《Environmental science and pollution research international》2020,27(32):39807-39818
Environmental Science and Pollution Research - Heavy metals (HMs) being the notorious and toxic are being introduced into the environment credited to natural and anthropogenic activities. The use... 相似文献
96.
Simultaneous determination of hydroxylamine and phenol using a nanostructure-based electrochemical sensor 总被引:1,自引:0,他引:1
Hadi Mahmoudi Moghaddam Hadi Beitollahi Somayeh Tajik Mohammad Malakootian Hassan Karimi Maleh 《Environmental monitoring and assessment》2014,186(11):7431-7441
The electrochemical oxidation of hydroxylamine on the surface of a carbon paste electrode modified with carbon nanotubes and 2,7-bis(ferrocenyl ethyl)fluoren-9-one is studied. The electrochemical response characteristics of the modified electrode toward hydroxylamine and phenol were investigated. The results showed an efficient catalytic activity of the electrode for the electro-oxidation of hydroxylamine, which leads to lowering its overpotential. The modified electrode exhibits an efficient electron-mediating behavior together with well-separated oxidation peaks for hydroxylamine and phenol. Also, the modified electrode was used for determination of hydroxylamine and phenol in some real samples. 相似文献
97.
A. R. Ghumman I. Hassan Q. U. Z. Khan M. A. Kamal 《Environmental monitoring and assessment》2013,185(6):4897-4905
In this paper, variability in precipitation pattern of Pakistan due to environmental and climatic changes has been studied. Maps have been generated to depict global precipitation variation. Precipitation data of 25 stations of Pakistan have been used. These data were taken from Meteorological Department, Islamabad, Pakistan. The results of two global climate models, namely Australia’s Commonwealth Scientific and Industrial Research’s third generation general circulation model and National Center for Atmospheric Research’s first generation precipitation circulation model for A2 scenario have been applied to investigate the changes. It is observed that precipitation pattern will change significantly in the future. The occurrence of precipitation in all seasons for Pakistan is expected to increase with almost uniform distribution across a season. Average annual precipitation of the country will undergo an increase in the range of +57 to +71 % as compared to average of the base period. 相似文献
98.
Jo Ellen Brandmeyer Hassan A. Karimi 《Journal of the Air & Waste Management Association (1995)》2013,63(6):972-980
ABSTRACT Emissions from automobiles and trucks operating on public roads represent a major portion of the air pollutants included in emission inventories. When emission data are prepared for air quality modeling studies, such as those supporting development of a State Implementation Plan, an emission processor matches the spatial and temporal resolution of the emissions to the requirements of the modeling study. However, the spatial location of vehicular emissions is not known and must be estimated. This paper presents a methodology for determining the spatial distribution of the roads belonging to a road class using geospatial data functions, such as those commonly provided by a geographic information system. Vehicle-miles traveled (VMT) are then allocated to medium-resolution (12 x 12-km) and fine-resolution (4 x 4-km) modeling grids using both this methodology and the existing top-down methodology, which uses population density. The results show a significant difference in the spatial distribution of VMT between these two methodologies. Based upon these results, we recommend using the road class-specific methodology in lieu of the population methodology for spatially allocating vehicular emissions for medium- and finer-resolution modeling grids. 相似文献
99.
A new strategy for determination of hydroxylamine and phenol in water and waste water samples using modified nanosensor 总被引:2,自引:0,他引:2
Roya Sadeghi Hassan Karimi-Maleh Mohammad A. Khalilzadeh Hadi Beitollahi Zahra Ranjbarha Mohammad Bagher Pasha Zanousi 《Environmental science and pollution research international》2013,20(9):6584-6593
A carbon paste electrode modified with p-chloranil and carbon nanotubes was used for the sensitive and selective voltammetric determination of hydroxylamine (HX) and phenol (PL). The oxidation of HX at the modified electrode was investigated by cyclic voltammetry (CV), chronoamperommetry, and electrochemical impedance spectroscopy. The values of the catalytic rate constant (k), and diffusion coefficient (D) for HX were calculated. Square wave voltammetric peaks current of HX and PL increased linearly with their concentrations at the ranges of 0.1–172.0 and 5.0–512.0 μmol L?1, respectively. The detection limits for HX and PL were 0.08 and 2.0 μmol L?1, respectively. The separation of the anodic peak potentials of HX and PL reached to 0.65 V, using square wave voltammetry. The proposed sensor was successfully applied for the determination of HX and PL in water and wastewater samples. 相似文献
100.
Muhammad Aqeel Kamran Amna Rabia Mufti Nadia Mubariz Jabir Hussain Syed Asghari Bano Muhammad Tariq Javed Muhammad Farooq Hussain Munis Zhiyuan Tan Hassan Javed Chaudhary 《Environmental science and pollution research international》2014,21(2):801-812
Soil and water quality is greatly affected by environmental pollution due to the increasing trend of urbanization and industrialization. In many developing countries, including Pakistan, the situation is more alarming as no preventive measures are still taken to tackle the problem. Although in developed countries, many techniques are used to remediate the environment including phytoremediation. It is the most eco-friendly technique in which plants are used to remove pollutants from the environment. Pakistan has also a great diversity of plants which could be used for the remediation of environmental pollutants. To our knowledge, few studies from Pakistan were reported about the use of flora for phytoremediation. According to recent literature, 50 plant species from Pakistan are studied for remediation purposes. In this review, the potential of different plant species for phytoremediation from Pakistan has been discussed along with their comparison to other countries to relate future perspectives. 相似文献