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Lansing, MI, United States

Alejandro Paz Portela N.,Antel BioSystems | Rodriguez Diaz B.,University of the Republic of Uruguay
IEEE Latin America Transactions

There is no doubt nowadays that Orthogonal Frequency Division Multiplexing (OFDM) is the dominant technology in the area of mobile wireless access. The objective of this work is to analyze and compare the performance and spectral efficiency of 3GPP Long Term Evolution (LTE) and mobile Worldwide Interoperability for Microwave Access (WiMAX). Both technologies (based in OFDM) are the dominant options to provide mobile broadband access today, and in the near future. © 2003-2012 IEEE. Source

Roberts J.N.,Michigan State University | Byrem T.M.,Antel BioSystems | Grooms D.L.,Michigan State University
Reproduction in Domestic Animals

Contents: Pregnancy-associated glycoproteins (PAG) are secreted by the binucleate giant cells of the ruminant placenta and enter maternal circulation at the time of placental attachment. The IDEXX Milk Pregnancy Test (IDEXX, Westbrook, ME) detects a subset of PAG in milk. Although designed as a management tool for dairy cows, there is potential for using the milk PAG test in beef cows. Our objective was to compare the performance of the milk PAG ELISA with a gold standard method for pregnancy diagnosis and determine the agreement between milk and serum PAG analysis in lactating beef cows. Angus and Angus-crossed cows (n = 332) from two Michigan beef herds were enrolled in this study. Cows were subjected either to timed artificial insemination followed by exposure to a bull or exclusively exposed to a bull. The bulls and cows were separated 30 days prior to examination. Serum and milk samples were collected and submitted within 24 h of collection to a commercial laboratory for PAG analysis using the IDEXX Milk Pregnancy Assay (milk) and the IDEXX Bovine Pregnancy Assay (serum). Concurrently with milk and serum collection, each cow was examined transrectally by palpation or ultrasonography. When compared to transrectal examination, the performance (and 95% confidence intervals) of the milk PAG ELISA was sensitivity of 99.7% (99.0-100.0%) and specificity of 80.8% (65.6-95.9%). The lower specificity is likely due to the low prevalence (9.9%) of open cows (n = 30) in the herds examined. Of the 332 cows examined, 1.8% (n = 6) were classified as rechecks using the milk PAG ELISA. Results of the milk and serum PAG ELISA were in high agreement (kappa coefficient = 0.91). The milk PAG ELISA was accurate in predicting pregnancy status using milk collected from beef cattle between days 37 and 125 post-insemination and may be useful for aiding management decisions in beef herds. © 2015 Blackwell Verlag GmbH. Source

Bartlett P.C.,Michigan State University | Sordillo L.M.,Michigan State University | Byrem T.M.,Antel BioSystems | Norby B.,Michigan State University | And 4 more authors.
Journal of the American Veterinary Medical Association

The subclinical impact of bovine leukemia virus (BLV) on the sustainability of the US dairy industry is only now being fully recognized. Findings of recent longitudinal studies conducted in Michigan dairy herds were consistent with the results of previous studies in showing that within-herd prevalence of BLV-infected cattle was negatively associated with milk production and cow longevity. Risk factors relating to routes of hematogenous transmission such as the use of shared hypodermic needles, shared reproductive examination sleeves, and natural breeding were associated with BLV within-herd prevalence. Few US dairy producers know the prevalence of BLV-infected cattle in their herds or are aware of the insidious economic impact of BLV or the options for BLV control. As an increasing number of countries eradicate BLV from their cattle populations, restrictions on the movement of US cattle and cattle products will likely increase. Veterinarians should be aware of recent developments for screening serum and milk samples for antibodies against BLV and the results of research regarding the economic impact of BLV so they can advise their dairy clients of available alternatives for monitoring and controlling BLV infection. Source

Delgado Caruso M.,Antel BioSystems | Rodriguez Diaz B.,University of the Republic of Uruguay
IEEE Latin America Transactions

Different studies about the use of radio spectrum have shown the existence of underutilized bands, like the ones destined to television broadcasting. This provides an interesting opportunity considering the exponential growth in wireless communications and applications, which results in an important demand for higher bandwidth to achieve an adequate performance. To operate in bands that are already licensed, it is necessary to ensure that this operation does not cause any interference to the primary user, and always gives priority to it. In this context the IEEE has been defining a standard with functionalities of Cognitive Radio that allows operation in licensed bands opportunistically, and without causing interference. From there comes the IEEE 802.22 standard, which has a set of features and procedures to measure, monitor and manage the radio spectrum, essential to ensure the protection of primary users transmissions. Some pilot projects have demonstrated the potential of this standard to provide broadband services comparable to classical ADSL services, especially in remote or rural areas inaccessible to deploy fixed networks. One of the great challenges to install such systems commercially, is to achieve the permissions for the operation and to have a defined regulation for these systems, decisions that are in the hands of the telecommunications services regulators in each country. This paper presents an overview of these issues with the intention of promoting a more efficient use of the spectrum. © 2016 IEEE. Source

Antel BioSystems | Date: 2012-07-17

Metal meshes and sieves, namely, wire mesh, wedge wires, for sieving, filtering and similar purposes. Water softening devices, namely, water softening filtration units; water treatment devices and water treatment equipment, namely, water filtration units, reverse osmosis filtration units; waste treatment equipment, namely, waste water purification units; water filters used in houses; water filters for industrial equipment; filters for drinking water; water filters for cooling water, water filters for cooling towers full flow and side stream filtration, water filters for nozzle protection, filters for sea water filtration, filters for well water, filters for surface water, filters for ballast water filtration, filters for irrigation water filtration, water filters for pressurized irrigation system.

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