排序方式: 共有37条查询结果,搜索用时 15 毫秒
31.
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
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Pranita S. Phatak Saurabh Trivedi Anurag Garg Sudhir K. Gupta Suparna Mukherji 《Environmental science and pollution research international》2016,23(20):20065-20080
Biological treatment of high-strength nitrogenous wastewater is challenging due to low growth rate of autotrophic nitrifiers. This study reports bioaugmentation of Thiosphaera pantotropha capable of simultaneously performing heterotrophic nitrification and aerobic denitrification (SND) in sequencing batch reactors (SBRs). SBRs fed with 1:1 organic-nitrogen (N) and NH4 +-N were started up with activated sludge and T. pantotropha by gradual increase in N concentration. Sludge bulking problems initially observed could be overcome through improved aeration and mixing and change in carbon source. N removal decreased with increase in initial nitrogen concentration, and only 50–60 % removal could be achieved at the highest N concentration of 1000 mg L?1 at 12-h cycle time. SND accounted for 28 % nitrogen loss. Reducing the settling time to 5–10 min and addition of divalent metal ions gradually improved the settling characteristics of sludge. Sludge aggregates of 0.05–0.2 mm diameter, much smaller than typical aerobic granules, were formed and progressive increase in settling velocity, specific gravity, Ca2+, Mg2+, protein, and polysaccharides was observed over time. Granulation facilitated total nitrogen (TN) removal at a constant rate over the entire 12-h cycle and thus increased TN removal up to 70 %. Concentrations of NO2 ?-N and NO3 ?-N were consistently low indicating effective denitrification. Nitrogen removal was possibly limited by urea hydrolysis/nitrification. Presence of T. pantotropha in the SBRs was confirmed through biochemical tests and 16S rDNA analysis. 相似文献
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Residual stress profile in a component is often considered as the critical characteristic as it directly affects the fatigue life of a machined component. This work presents an analytical model for the prediction of residual stresses in orthogonal machining of AISI4340 steel. The novelty of the model lies in the physics-based approach focusing on the nature of contact stresses in various machining zones and the effect of machining temperature. The model incorporates: (i) stresses in three contact regions viz. shear, tool-nose-work piece and tool flank and machined surface, (ii) machining temperature, (iii) strain, strain rate and temperature dependent work material properties, (iv) plastic stresses evaluation by two algorithms, S-J and hybrid, (v) relaxation procedure and (iv) cutting conditions. The model benchmarking shows (86–88%) agreement between the experimental and predicted residual stresses in the X- and Y-directions. On the machined surface, the tensile residual stresses decrease with an increase the edge radius and increase with an increase the cutting speed. However, below the surface, the compressive residual stresses increase with an increase the depth of cut. Further, it is observed that the proposed model with hybrid algorithm gives better results at a lower feed rate, whereas with the S-J algorithm, at a higher feed rate. 相似文献
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Thakur Ina Verma Anoop Örmeci Banu Sangal Vikas 《Environmental science and pollution research international》2022,29(48):72247-72259
Environmental Science and Pollution Research - The study reports the applications of waste-derived visibly active Fe-TiO2 composite for the inactivation of E. coli present in water. The Fe/TiO2... 相似文献
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Allam Venkata Sita Rama Raju Paudel Keshav Raj Gupta Gaurav Singh Sachin Kumar Vishwas Sukriti Gulati Monica Gupta Saurabh Chaitanya M. V. N. L. Jha Niraj Kumar Gupta Piyush Kumar Patel Vyoma K. Liu Gang Kamal Mohammad Amjad Hansbro Philip M. Oliver Brian Gregory George Chellappan Dinesh Kumar Dua Kamal 《Environmental science and pollution research international》2022,29(42):62733-62754
Environmental Science and Pollution Research - Asthma is a chronic inflammatory disease primarily characterized by inflammation and reversible bronchoconstriction. It is currently one of the... 相似文献
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Rajoria Sonal Vashishtha Manish Sangal Vikas K. 《Environmental science and pollution research international》2022,29(48):72196-72246
Environmental Science and Pollution Research - Water pollution by recalcitrant compounds is an increasingly important problem due to the continuous introduction of new chemicals into the... 相似文献