A comprehensive review on the current trends, challenges and future prospects for sustainable mobility

Hydrophobic soot nanoparticles as a non-cytotoxic motility activator of human spermatozoa

“…32 Moreover, the European Green Deal, approved in 2020, and the aspirations for the decarbonization of the industry, aiming to gain lower output of greenhouse gases (e.g., soot emissions) in the troposphere, enforce the common perception that carbon soot is a highly hazardous substance and must remain in history. 35 Indeed, apart from changing the Earth's radiative balance, the atmospheric soot aerosols adversely affect the human health and oen cause lung cancer or cardiovascular diseases. 36 From that point of view, the recently proposed sootbased approach for cryoprotection of human gametes is quite curious, unthinkable and even questionable to a certain extent.…”

Experimental Investigation and Prediction of Performance, Combustion, and Emission Features of a Diesel Engine Fuelled with Pumpkin-Maize Biodiesel using Different Machine Learning Algorithms

“…e smoke opacity of diesel engine exhaust is used to determine how much smoke will be produced. e primary factors that determine smoke opacity are fuel composition and oxygen [51]. e viscosity, volatility, and quality of the fuel air combination are other factors, which affect the fuel's ability to atomize and that lead to smoke generation.…”

Decision making with the deterministic judgment of urea production with various hydrogen sources: technical, economic, and environmental aspects

“…5 Commercial urea production plants utilize the Basarov reaction 6 which consists of two parts: (1) ammonium carbamate (NH 2 COONH 4 ) is synthesized from ammonia (NH 3 ) and CO 2 ; (2) dehydration of ammonium carbamate to synthesize urea and water (H 2 O). The conventional urea production process has already been established and actively used since it was developed; 7 however, renewable urea production should be proposed because ammonia is a precursor of urea, of which more than half of its annual production is used to produce urea. Additionally, urea production is still focused on the use of hydrogen (H 2 ) produced through coal-fired power generation due to economic feasibility, and the urea is exported, mainly from China, Russia, and Saudi Arabia, which mainly deal with coal resources.…”