55 research outputs found
Recommended from our members
CIRCE: A dedicated storage ring for coherent THz synchrotron radiation
We present the concepts for an electron storage ring dedicated to and optimized for the production of stable coherent synchrotron radiation (CSR) over the far-infrared terahertz wavelength range from 200 mm to about one cm. CIRCE (Coherent InfraRed CEnter) will be a 66 m circumference ring located on top of the ALS booster synchrotron shielding tunnel and using the existing ALS injector. This location provides enough floor space for both the CIRCE ring, its required shielding, and numerous beamlines. We briefly outline a model for CSR emission in which a static bunch distortion induced by the synchrotron radiation field is used to significantly extend the stable CSR emission towards higher frequencies. This model has been verified with experimental CSR results. We present the calculated CIRCE photon flux where a gain of 6-9 orders of magnitude is shown compared to existing far-IR sources. Additionally, the particular design of the dipole vacuum chamber has been optimized to allow an excellent transmission of these far-infrared wavelengths. We believe that the CIRCE source can be constructed for a modest cost
Delaying implant in high-risk calves has no benefit for health or feedlot performance
Bovine respiratory disease is the most common and costly disease in the beef industry.
Calves affected by bovine respiratory disease have a 53-lb decrease in finished weights
and decreased quality grades compared with healthy cattle.
Many stressors influence post-arrival health and nutrient intake, including weaning,
marketing, transportation, co-mingling, genetics, previous nutrition, and health history.
These stressors can negatively affect the immune system at a time when the animal is
more likely to be exposed to infectious agents within the bovine respiratory disease
complex. Feed intake by stressed calves is low, and low nutrient intake likely increases
the negative effects of stress on the immune system.
Delaying the initial steroid implant may reduce post-transit stress and improve carcass
quality of feedlot cattle. This study was designed to examine the effects of administering
initial steroid implants at feedlot arrival or 45 days after feedlot arrival on health,
performance, and carcass characteristics of feeder calves at relatively high risk for bovine
respiratory disease
Recommended from our members
CIRCE: A dedicated storage ring for coherent THz synchrotron radiation
We present the concepts for an electron storage ring dedicated to and optimized for the production of stable coherent synchrotron radiation (CSR) over the far-infrared terahertz wavelength range from 200 mm to about one cm. CIRCE (Coherent InfraRed CEnter) will be a 66 m circumference ring located on top of the ALS booster synchrotron shielding tunnel and using the existing ALS injector. This location provides enough floor space for both the CIRCE ring, its required shielding, and numerous beamlines. We briefly outline a model for CSR emission in which a static bunch distortion induced by the synchrotron radiation field is used to significantly extend the stable CSR emission towards higher frequencies. This model has been verified with experimental CSR results. We present the calculated CIRCE photon flux where a gain of 6 - 9 orders of magnitude is shown compared to existing far-IR sources. Additionally, the particular design of the dipole vacuum chamber has been optimized to allow an excellent transmission of these far-infrared wavelengths. We believe that the CIRCE source can be constructed for a modest cost
- …