The objective of the current study was to quantify the change in the prediction of dry matter intake (DMI) resulting from the inclusion of rumination time (RT) in the 2001 National Research Council (NRC) DMI prediction model. Forty-one Holstein cows fed the same total mixed ration were involved in a 10-wk study. Individual DMI were measured daily. The accuracy and precision of the original NRC ...

Exploring the use of single-mode fibers (SMFs) in high precision Doppler spectrometers has become increasingly attractive since the advent of diffraction-limited adaptive optics systems on largeaperture telescopes. Spectrometers fed with these fibers can be made significantly smaller than typical ‘seeing-limited’ instruments, greatly reducing cost and overall complexity. Importantly, classical ...

air spindles are one of the main elements of precise machine tools. vibration of these spindles is one of the vital issues necessary for investigation. among parameters which influence air spindle vibrations are rotational speed, compression air method, input nozzle diameter, air gap pressure. in this study using ansys, the effects of air gap thickness on air spindle vibrations have been invest...

precision forging process is widely used for the production of spur gears due to its advantages such asimproved strength and surface finish, little waste of materials and reduction in the machining time ofthe gear. an important aspect of precision forging process is the load required to perform the processsuccessfully and design the forging tools. in this research, a new kinematically admissibl...

Two periods enrolling 56 (milk yield 36.2 ± 7.91 kg/d) and 58 32.4 4.99 grouped-fed dairy cows were performed to evaluate nutrient adjustment N emissions of a precision feeding strategy. Pens blocked by parity randomly assigned conventional (CONV) or scheme (PREC) for 21-d period. The CONV group was offered total mixed ration (TMR, 6.82 6.65 MJ NEl/kg DM, in period 1 2, respectively, 165 g CP/k...

In this work, an advanced motion controller is proposed for buck converter-fed DC motor systems. The design based on idea of active disturbance rejection control (ADRC) with its key component being a custom observer capable reconstructing various types disturbances (including complex, harmonic signals). A special formulation the allows action to be expressed in concise and practically appealing...