Flexible Polyurethane (PU) foam samples with different densities and chemical formulations were tested in quasi-static stress-strain compression tests. The compression tests were performed using the Lloyd LR5K Plus instrument at fixed compression strain rate of 0.033 s-1 and samples were compressed up to 70% compression strains. All foam samples were tested in the foam rise direction and their ...

Bismuth silicate (Bi2SiO5) was recently suggested as a potential silicate based lead-free ferroelectric material. Here, we show the existence of ferroelectricity and explore the strong anisotropy of local ferroelectricity using piezoresponse force microscopy (PFM). Domain structures are reconstructed using angle-resolved PFM. Furthermore, piezoresponse hysteresis loops and piezoelectric coeffic...

This paper proposes and demonstrates novel types of vision chips that utilize pulse trains for image processing. Two types of chips were designed using 1.2 μm double-metal double-poly CMOS process; one is based on a pulse width modulation (PWM) and the other is based on a pulse frequency modulation (PFM). In both chips the interaction between the pixels were introduced to realize the image pre-...

Coal gangue produced during coal production not only poses a serious threat to the ground environment but also imposes economic burdens on mine. The partial-filling mining (PFM) method proposed in this paper can make full use of and is great significance prevention control water disasters at working face. specific process used implement first divide face into several narrow faces then fill fill...

Due to recent developments in the global economy, transportation, and industrialization, air pollution is one of main environmental issues 21st century. The current study aimed predict both short-term long-term Jiangsu Province, China, based on Prophet forecasting model (PFM). We collected data from 72 quality monitoring stations forecast six pollutants: PM 10 , 2.5 SO 2 NO CO, O 3 . To determi...

Structural best management practices were implemented throughout the Cannonsville Reservoir Watershed (CRW) in an effort to reduce P losses to the reservoir. Yet long-term water quality control efforts within CRW are hindered by continuous P build-up in the soils resulting from dairy farm P imports exceeding exports. Addressing the P imbalance problems and maintaining economic viability of the ...