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101.
Ghulam Akhmat Khalid Zaman Tan Shukui Faiza Sajjad Muhammad Azhar Khan Muhammad Zahir Khan 《Environmental science and pollution research international》2014,21(12):7425-7435
The objective of the study is to investigate the long-run relationship between climatic factors (i.e., greenhouse gas emissions, agricultural methane emissions, and industrial nitrous oxide emission), air pollution (i.e., carbon dioxide emissions), and energy sources (i.e., nuclear energy; oil, gas, and coal energy; and fossil fuel energy) in the panel of 35 developed countries (including EU-15, new EU member states, G-7, and other countries) over a period of 1975–2012. In order to achieve this objective, the present study uses sophisticated panel econometric techniques including panel cointegration, panel fully modified OLS (FMOLS), and dynamic OLS (DOLS). The results show that there is a long-run relationship between the variables. Nuclear energy reduces greenhouse gases and carbon emissions; however, the other emissions, i.e., agricultural methane emissions and industrial nitrous oxide, are still to increase during the study period. Electricity production from oil, gas, and coal sources increases the greenhouse gases and carbon emissions; however, the intensity to increase emissions is far less than the intensity to increase emissions through fossil fuel. Policies that reduce emissions of greenhouse gases can simultaneously alter emissions of conventional pollutants that have deleterious effects on human health and the environment. 相似文献
102.
Yoon Yee Then Nor Azowa Ibrahim Wan Md Zin Wan Yunus 《Journal of Polymers and the Environment》2011,19(2):535-539
Polycaprolactone/tapioca starch/octadecylamine modified clay (OMMT) nanocomposites were successfully prepared by melt blending.
X-ray diffraction and transmission electron microscopy (TEM) of the products showed that they are nanocomposites of a mixture
intercalated and exfoliated types. In addition, the TEM also revealed that the OMMT layers are homogeneously distributed in
the polymer matrix. The presence of 1 php of OMMT improved the compatibility of the polymers in the blends which consequently
increased the tensile strength of the blend of more than 60% and elongation at break of more than 1,000%. 相似文献
103.
Pseudomonas fluorescens SM1 isolate was found to be resistant to some major water pollutants namely Cd2+, Cr6+, Cu2+, Ni2+, Pb2+, BHC, 2,4-D, mancozeb and phenols up to a concentration four times to the normal levels occurring in the highly pollulated regions. Curing experiment brought about the loss of one or more resistance markers indicating the plasmid born resistance. Plasmid profile of SM1 strain showed the presence of one DNA band of 43.6 kb. This Plasmid was isolated from SM1 strain and introduced into Escherichia coli DH5 alpha with a transformation frequency of 6.7 x 10(-4)transformants/recipient cell. The test SM1 strain was also capable of biotransforming Cr(VI) to Cr(III) which is less toxic compounds. Present studies further indicated that the test SM1 strain was not only resistant to 2,4-D, phenols and catechol but also capable of bioremediating these toxicants quite efficiently. Moreover, studies with inhibitors like sodium azide, 2,4-DNP and chloramphenicol suggested that the major mechanism for the bioremediation of the heavy metals other than Cr6+ would be the biosorption process. 相似文献
104.
Hilma Raimona Zadry Siti Zawiah Md Dawal Zahari Taha 《International journal of occupational safety and ergonomics》2016,22(3):374-383
This study was conducted to develop muscle and mental activities on repetitive precision tasks. A laboratory experiment was used to address the objectives. Surface electromyography was used to measure muscle activities from eight upper limb muscles, while electroencephalography recorded mental activities from six channels. Fourteen university students participated in the study. The results show that muscle and mental activities increase for all tasks, indicating the occurrence of muscle and mental fatigue. A linear relationship between muscle activity, mental activity and time was found while subjects were performing the task. Thus, models were developed using those variables. The models were found valid after validation using other students’ and workers’ data. Findings from this study can contribute as a reference for future studies investigating muscle and mental activity and can be applied in industry as guidelines to manage muscle and mental fatigue, especially to manage job schedules and rotation. 相似文献
105.
Watering techniques and zero-valent iron biochar pH effects on As and Cd concentrations in rice rhizosphere soils, tissues and yield 总被引:1,自引:0,他引:1
Md Shafiqul Islam Yali Chen Liping Weng Jie M Zulqarnain Haider Khan Zhongbin Liao Abdoul Salam Issiaka Abdoul Magi Yongtao Li 《环境科学学报(英文版)》2021,33(2):144-157
Zero-valent iron amended biochar (ZVIB) has been proposed as a promising material in immobilizing heavy metals in paddy fields. In this study, the impacts of pH of ZVIB (pH 6.3 and pH 9.7) and watering management techniques (watering amount in the order of CON (control, 5/72)>3/72>1–3/72>3/100>1/72, with 5/72, for example, representing irrigation given to 5 cm above soil surface in 72 hr regular interval) on As and Cd bioavailability for rice and its grain yield (YieldBR) were investigated in a pot experiment. Brown rice As (AsBR) content was irrelative to the watering treatments, while significantly decreased (>50%) with the addition of both ZVIB materials. The diminutions of brown rice Cd (CdBR) content as well as the YieldBR were highly dependent on both the soil amendment materials’ pH and watering amount. Among all the watering treatments, 3/72 treatment (15% less irrigation water than the CON) with ZVIB 6.3 amendment was the optimum fit for simultaneous reduction of AsBR (50%) and CdBR contents (19%) as well as for significant increment (12%) of the YieldBR. Although high pH (9.7) ZVIB application could also efficiently decrease As and Cd contents in brown rice, it might risk grain yield lost if appropriate (e.g. 3/72 in our study) watering management technique was not chosen. Therefore, ZVIB would be an environmentally friendly option as an amendment material with proper selection of watering management technique to utilize As and Cd co-contaminated arable soils safely for paddy cultivation. 相似文献
106.
Prediction of total bed material load for rivers in Malaysia: A case study of Langat,Muda and Kurau Rivers 总被引:1,自引:0,他引:1
Aminuddin Ab. Ghani H. Md. Azamathulla Chun Kiat Chang Nor Azazi Zakaria Zorkeflee Abu Hasan 《Environmental Fluid Mechanics》2011,11(3):307-318
A soft computational technique is applied to predict sediment loads in three Malaysian rivers. The feed forward-back propagated
(schemes) artificial neural network (ANNs) architecture is employed without any restriction to an extensive database compiled
from measurements in Langat, Muda, Kurau different rivers. The ANN method demonstrated a superior performance compared to
other traditional sediment-load methods. The coefficient of determination, 0.958 and the mean square error 0.0698 of the ANN
method are higher than those of the traditional method. The performance of the ANN method demonstrates its predictive capability
and the possibility of generalization of the modeling to nonlinear problems for river engineering applications. 相似文献
107.
Md. Shafiqul Islam M.A. Hannan Hassan Basri Aini Hussain Maher Arebey 《Waste management (New York, N.Y.)》2014,34(2):281-290
The increasing requirement for Solid Waste Management (SWM) has become a significant challenge for municipal authorities. A number of integrated systems and methods have introduced to overcome this challenge. Many researchers have aimed to develop an ideal SWM system, including approaches involving software-based routing, Geographic Information Systems (GIS), Radio-frequency Identification (RFID), or sensor intelligent bins. Image processing solutions for the Solid Waste (SW) collection have also been developed; however, during capturing the bin image, it is challenging to position the camera for getting a bin area centralized image. As yet, there is no ideal system which can correctly estimate the amount of SW. This paper briefly discusses an efficient image processing solution to overcome these problems. Dynamic Time Warping (DTW) was used for detecting and cropping the bin area and Gabor wavelet (GW) was introduced for feature extraction of the waste bin image. Image features were used to train the classifier. A Multi-Layer Perceptron (MLP) classifier was used to classify the waste bin level and estimate the amount of waste inside the bin. The area under the Receiver Operating Characteristic (ROC) curves was used to statistically evaluate classifier performance. The results of this developed system are comparable to previous image processing based system. The system demonstration using DTW with GW for feature extraction and an MLP classifier led to promising results with respect to the accuracy of waste level estimation (98.50%). The application can be used to optimize the routing of waste collection based on the estimated bin level. 相似文献
108.
This article attempts to examine the influence of some selected predictor variables on female age at first marriage in slum areas of Bangladesh. A path and multiple classification analysis (MCA) approach have been adopted. Authors thought that respondent’s educational level and the mass media such as watching television have a significant direct impact on age at marriage, while the types of family and occupational status have an indirect effect on age at marriage. 相似文献
109.
Islam Md.Monirul Ali Md.Idris Ceh Brian Singh Sanjeet Khan Muhammad Kamran Dagar Vishal 《Environmental science and pollution research international》2022,29(23):34231-34247
Environmental Science and Pollution Research - Energy consumption for sustainable development has become a crucial issue in recent years. The anthropogenic effects of traditional energy sources... 相似文献
110.
Babalghaith Ali Mohammed Koting Suhana Sulong Nor Hafizah Ramli Khan Md Zahid Hossain Milad Abdalrhman Yusoff Nur Izzi Md. Ibrahim Mohd Rasdan Mohamed Abdul Halim bin Nagor 《Environmental science and pollution research international》2022,29(24):35557-35582
Environmental Science and Pollution Research - The daily utilization of a large amount of raw materials is causing a rapid depletion of natural resources. The growth of the human population is... 相似文献