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151.
Zaki Alam Pushan Ehsanur Rahman Nafisa Islam Nirupam Aich 《Frontiers of Environmental Science & Engineering》2022,16(10):128
152.
Many occupations in industry such as metal stamping workers, electronics parts assembly operators, automotive industry welders, and lathe operators require working in a standing posture for a long time. Prolonged standing can contribute to discomfort and muscle fatigue particularly in the back and legs. This study developed the prolonged standing strain index (PSSI) to quantify the risk levels caused by standing jobs, and proposed recommendations to minimize the risk levels. Risk factors associated with standing jobs, such as working posture, muscles activity, standing duration, holding time, whole-body vibration, and indoor air quality, were the basis for developing the PSSI. All risk factors were assigned multipliers, and the PSSI was the product of those multipliers. Recommendations for improvement are based on the PSSI; however, extensive studies are required to validate their effectiveness. multipliers, and the PSSI was the product of those multipliers. Recommendations for improvement are based on the PSSI; however, extensive studies are required to validate their effectiveness. 相似文献
153.
A. A. Francis M. K. Abdel Rahman 《International Journal of Sustainable Engineering》2016,9(6):411-418
Submerged-arc welding slag (SAWS) and rice husk (RH) wastes represent two particularly abundant metallurgical and agricultural wastes. This work focusses on the feasibility of SAWS, together with glass cullet and RHs, to develop lightweight porous glass–ceramics that could be useful for technical purposes. Effects of temperatures and amounts of RHs on the porosity and water absorption of porous glass–ceramics were discussed at various dosages of husks up to 20 wt%. Depending on the sintering temperature, XRD measurements confirmed the presence of more than two crystalline phases: diopside, jacobsite, MgAl2O4, Ca1.82Al3.64Si0.36O8 and pyrope. These samples exhibited magnetic properties which were related to the presence of jacobsite phase. Magnetization curve is a characteristic of soft ferromagnetic materials with magnetization saturating at ~0.82 emu/g. The present results show a promising way to treat submerged-arc welding slags, transforming it into useful porous and functional glass–ceramic products via a simple powder technology and sintering approach. 相似文献
154.
Optimisation of rainwater tank design from large roofs: A case study in Melbourne, Australia 总被引:4,自引:0,他引:4
Monzur Alam Imteaz Abdallah ShanablehAtaur Rahman Amimul Ahsan 《Resources, Conservation and Recycling》2011,55(11):1022-1029
Rainwater tanks for larger roof areas need optimisation of tank size, which is often not carried out before installation of these tanks. This paper presents a case study of rainwater tank evaluation and design for large roof areas, located in Melbourne, Australia, based on observed daily rainfall data representing three different climatic regimes (i.e. dry average, and wet years). With the aim of developing a comprehensive Decision Support Tool for the performance analysis and design of rainwater tanks, a simple spreadsheet based daily water balance model is developed using daily rainfall data, contributing roof area, rainfall loss factor, available storage volume, tank overflow and irrigation water demand. In this case study, two (185 m3 and 110 m3) underground rainwater tanks are considered. Using the developed model, effectiveness of each tank under different climatic scenarios are assessed. The analysis shows that both the tanks are quite effective in wet and average years, however less effective in dry years. A payback period analysis of the tanks is preformed which reveals that the total construction cost of the tanks can be recovered within 15-21 years time depending on tank size, climatic conditions and future water price increase rates. For the tanks, a relationship between water price increase rates and payback periods is developed. The study highlights the need for detailed optimisation and financial analysis for large rainwater tanks to maximise the benefits. 相似文献
155.
A review on the formation of titania nanotube photocatalysts by hydrothermal treatment 总被引:3,自引:0,他引:3
Titania nanotubes are gaining prominence in photocatalysis, owing to their excellent physical and chemical properties such as high surface area, excellent photocatalytic activity, and widespread availability. They are easily produced by a simple and effective hydrothermal method under mild temperature and pressure conditions. This paper reviews and analyzes the mechanism of titania nanotube formation by hydrothermal treatment. It further examines the parameters that affect the formation of titania nanotubes, such as starting material, sonication pretreatment, hydrothermal temperature, washing process, and calcination process. Finally, the effects of the presence of dopants on the formation of titania nanotubes are analyzed. 相似文献
156.
Umme Salma Zohor Mohammad Shahedur Rahman Abdul Wahab Khan Masahiro Okanami Takashi Ano 《环境科学学报(英文版)》2013,(S1):S2-S7
To enhance the production of lipopeptide antibiotic iturin A, nutrient contents of the culture mediums were investigated in both submerged and biofilm fermentations. As a carbon source maltose and as nitrogen source, fish protein was used. In submerged fermentation maltose uptake was found lower (12%) compared to biofilm fermentation (15%) that was associated with higher cellular growth in biofilm. However, requirement of nitrogen (fish protein) concentration was found similar in both submerged and biofilm fermentations. Production of iturin A in submerged fermentation with 12% maltose and 5% fish protein was 4450 mg/L, and in biofilm fermentation it was 5050 mg/L when 15% maltose and 5% fish protein was used. 相似文献
157.
Umar Yunusa Al-Batty Sirhan Rahman Habibur Ashwaq Omar Sarief Abdulla Sadique Zakariya Sreekumar P. A. Haque S. K. Manirul 《Journal of Polymers and the Environment》2022,30(4):1244-1263
Journal of Polymers and the Environment - Recently discovered SARS-CoV-2 caused a pandemic that triggered researchers worldwide to focus their research on all aspects of this new peril to humanity.... 相似文献
158.
Razzagh Siamak Nadiri Ata Allah Khatibi Rahman Sadeghfam Sina Senapathi Venkatramanan Sekar Selvam 《Environmental science and pollution research international》2021,28(15):18702-18724
Environmental Science and Pollution Research - A capability for aggregating risks to aquifers is explored in this paper for cases with sparse data exposed to anthropogenic and geogenic contaminants... 相似文献
159.
Kabir Md. Tanvir Ferdous Mitu Jannatul Akter Raushanara Akhtar Muhammad Furqan Saleem Ammara Al-Harrasi Ahmed Bhatia Saurabh Rahman Md. Sohanur Damiri Fouad Berrada Mohammed Rahman Md. Habibur 《Environmental science and pollution research international》2022,29(31):46385-46404
Environmental Science and Pollution Research - Diabetes is a global health concern that has affected almost 415 million people globally. Bromocriptine is a dopamine D2 agonist, which is a Food and... 相似文献
160.
A review about COVID-19 in the MENA region: environmental concerns and machine learning applications
Meskher Hicham Belhaouari Samir Brahim Thakur Amrit Kumar Sathyamurthy Ravishankar Singh Punit Khelfaoui Issam Saidur Rahman 《Environmental science and pollution research international》2022,29(55):82709-82728
Environmental Science and Pollution Research - Coronavirus disease 2019 (COVID-19) has delayed global economic growth, which has affected the economic life globally. On the one hand, numerous... 相似文献