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Environmental Fluid Mechanics - In this paper, the linear stability of sand waves sheared by a turbulent flow is analyzed. The velocity distribution in the streamwise direction is considered to... 相似文献
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Abbass Kashif Qasim Muhammad Zeeshan Song Huaming Murshed Muntasir Mahmood Haider Younis Ijaz 《Environmental science and pollution research international》2022,29(28):42539-42559
Environmental Science and Pollution Research - Climate change is a long-lasting change in the weather arrays across tropics to polls. It is a global threat that has embarked on to put stress on... 相似文献
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Lu Lu Fan Xiaolei Ullah Sana Younas Muhammad Zeeshan 《Environmental science and pollution research international》2022,29(12):17406-17416
Environmental Science and Pollution Research - This paper examines the impact of shadow economy and environmental policy stringency on energy consumption and economic growth in the case of China... 相似文献
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Farooqi Zia Ur Rahman Ahmad Iftikhar Zeeshan Nukshab Ilić Predrag Imran Muhammad Saeed Muhammad Farhan 《Environmental science and pollution research international》2021,28(39):54909-54921
Environmental Science and Pollution Research - Elevated noise level is an emerging global problem. Therefore, the present work is conducted that can improve, increase, and integrate the already... 相似文献
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Jawad Ahmad Khan Fahad Pervaiz Nazar Mohammad Ranjha Muhammad Naeem Nayab Khalid Zeeshan Javaid 《Journal of Polymers and the Environment》2017,25(3):556-568
In the present work covalently crosslinked smart polymeric system of hydrogel based on poly vinyl alcohol (PVA) and methacrylic acid (MA) was designed by free radical polymerization with different compositions using glyoxal (40 % water solution) as crosslinker. It was observed that swelling of hydrogel had a pronounced enhancing effect on increasing the concentration of MA due to availability of more ionized carboxylic groups of MA but produced an opposite effect on increasing the concentration of glyoxal owing to less porous structure. As far as PVA is concerned, swelling did not show significant effect on increasing the concentration of PVA. Hydrophilic polymer PVA rich in hydroxyl group pertained to be highly interactive with water. It was examined that the release of metoprolol tartrate decreased with increased concentration of glyoxal, but increased with increase in concentration of MA. PVA/MA hydrogel was characterized by Fourier transform infrared spectroscopy and X-ray diffraction to study the structure and crystallinity of hydrogel respectively. Morphology was studied through scanning electron microscopy. Furthermore differential scanning calorimetry and thermogravimetric analysis were also performed to characterize thermal stability. It may be concluded that the mechanism of drug release was mainly non-Fickian diffusion. 相似文献
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Rehman Alam Ullah Irfan Afridi Fakhr-e-Alam Ullah Zain Zeeshan Muhammad Hussain Arif Rahman Haseeb Ur 《Environment, Development and Sustainability》2021,23(9):13200-13220
Environment, Development and Sustainability - Banking industries are blamed to be among the major factors that affect global climate change both directly and indirectly. The green banking concept... 相似文献
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Chengzhi Xing Cheng Liu Qihou Hu Qingyan Fu Shanshan Wang Hua Lin Yizhi Zhu Shuntian Wang Weiwei Wang Zeeshan Jave Xiangguang Ji Jianguo Liu 《环境科学学报(英文版)》2021,33(7):44-55
Ground-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) observations were operated from 02 to 21 December 2018 in Leshan, southwest China, to measure HONO, NO2 and aerosol extinction vertical distributions, and these were the first MAX-DOAS measurement results in Sichuan Basin. During the measurement period, characteristic ranges for surface concentration were found to be 0.26–4.58 km?1 and averaged at 0.93 km?1 for aerosol extinction, 0.49 to 35.2 ppb and averaged at 4.57 ppb for NO2 and 0.03 to 7.38 ppb and averaged at 1.05 ppb for HONO. Moreover, vertical profiles of aerosol, NO2 and HONO were retrieved from MAX-DOAS measurements using the Heidelberg Profile (HEIPRO) algorithm. By analysing the vertical gradients of pollutants and meteorological information, we found that aerosol and HONO are strongly localised, while NO2 is mainly transmitted from the north direction (city center direction). Nitrogen oxides such as HONO and NO2 are important for the production of hydroxyl radical (OH) and oxidative capacity in the troposphere. In this study, the averaged value of OH production rate from HONO is about 0.63 ppb/hr and maximum value of ratio between OH production from HONO and from (HONO+O3) is > 93% before12:00 in Leshan. In addition, combustion emission contributes to 26% for the source of HONO in Leshan, and we found that more NO2 being converted to HONO under the conditions with high aerosol extinction coefficient and high relative humidity is also a dominant factor for the secondary produce of HONO. 相似文献
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Alhijazi Mohamad Safaei Babak Zeeshan Qasim Asmael Mohammed Harb Mohammad Qin Zhaoye 《Journal of Polymers and the Environment》2022,30(10):4377-4393
Journal of Polymers and the Environment - The present work presents an analysis of the tensile properties of Palm as well as Luffa natural fiber composites (NFC) in high density polyethylene... 相似文献
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Hussain Muzzammil Arshad Zeeshan Bashir Adnan 《Environmental science and pollution research international》2022,29(31):46612-46619
Environmental Science and Pollution Research - Economic policies related to energy and the environment are found uncertain in developing economies. Renewable energy sources are gradually increasing... 相似文献