A polymer-based mechanical low-pass filter(m-LPF) for high-g accelerometers makes it possible to remove high-frequency transient noises from acceleration signals, thus ensuring repeatable and reliable measurement on acceleration. We establish a prediction model performance of m-LPF by combining fundamental vibration with the fractional derivative standard linear solid(FD SLS) describing storage...

To improve the reactive sites of kraft technical lignin, a deep eutectic solvent (DES) composed ZnCl2 / lactic acid was used to pretreat lignin from coniferous wood. The modified and unmodified were replace different proportions phenol (50%, 60%, 70%) prepare lignin-phenol-formaldehyde (LPF) adhesive. phenolic hydroxyl content DES-treated increased 3.12 wt% 3.93 methoxy decreased 11.83 6.64 und...

Conventional sliding mode control (SMO) utilizes a sign function and low-pass filter (LPF) to achieve sensorless of permanent magnet synchronous motor (PMSM). However, the introduction generates large number high harmonics, resulting in significant system output chattering, whereas addition LPF delays phase shifts. These degrade PMSM speed position estimation accuracy reduce performance. To imp...

Liquid pig feed (LPF) and skimmed milk (SM) acidified to pH 4 with lactic or hydrochloric acid (HCl) were treated with 0, 2.5, 5. 12.5, 25 or 50 ppm Cu and challenged with 10 c.f.u ml Salmonella Typhimurium DT104:30. The decimal reduction time (D) was determined by enumeration of viable Salmonellae at appropriate time intervals after inoculation. Additional SM samples, acidified to pH 2.5 with ...

This study examined the immunological responses of pregnant cattle and their foetuses following an experimental challenge with live Neospora caninum tachyzoites at day 210 of gestation. Animals were bled prior to and weekly throughout the experiment and sacrificed at 14, 28, 42 and 56 days post inoculation (dpi). At post mortem examination, samples of lymph nodes and spleen were collected from ...

The surge in energy demand needs to be met with environmentally pleasant resources reduce the production of greenhouse gases. Solar Photovoltaic (PV) power is a widespread choice as it accessible plenty and comparatively inexpensive. However, large-scale penetration intermittent PV causes multiple variabilities grid such frequency issues voltage deviations. To counteract these instabilities, Ba...

The synchronization stability of the virtual synchronous generator (VSG) under grid fault is an important issue for maintaining stable operation in power system. Existing work has pointed out a low-pass filter (LPF) with sufficiently low cutoff frequency reactive control loop (RPCL) can improve transient stability. Yet, underlying mechanism was unknown. Moreover, as key index VSG and preconditi...

1 Laboratorio de Propiedades Físicas (LPF)-TAGRALIA, Technical University of Madrid, Madrid 28040, Spain; [email protected] 2 Institute of Agricultural Engineering, University of Hohenheim, Garbenstr. 9, Stuttgart D-70599, Germany; [email protected] (D.S.P.); [email protected] (D.R.); [email protected] (M.V.A.); [email protected] (H.W.G.) * ...

A novel design method for compact planar lowpass filter (LPF) with prominent roll-off rate and wide stopband suppression is proposed by using fragment-type structures (FTS) multi-bit scheme. The FTS has the potential to achieve higher LPF performance at optimization efficiency, without any prerequisite knowledge about pivotal needed in conventional designs. definition of implementation scheme a...

The effect of proximity to a dominant cow on a low-ranking cow's willingness to feed was assessed using choice tests. The main aim of the experiment was to determine the feeding space allowance at which the majority of subordinate cows would choose to feed on high-palatability food (HPF) next to a dominant cow rather than feeding alone on low-palatability food (LPF). Thirty Holstein-Friesian co...