The Experts below are selected from a list of 273 Experts worldwide ranked by ideXlab platform
Richard R Thompson - One of the best experts on this subject based on the ideXlab platform.
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history of applied coal petrology in the united states iii contributions to applied coal and coke petrology at the bethlehem steel corporation
International Journal of Coal Geology, 2000Co-Authors: Richard R ThompsonAbstract:Bethlehem Steel maintained a coal petrography laboratory in its Research Department from late 1962 until 1985. The primary goals of the laboratory were to develop an accurate method for analyzing the microscopic composition of the coals used by Bethlehem and to correlate that analysis with the various tests of coking quality and coking behavior, thus providing a predictive capability from which coals and coal blends could be selected and controlled for use in the cokemaking process. This paper describes the history of this development and some of the key findings that led to the success of the laboratory. It further describes the philosophy behind the development of an integrated research program on cokemaking and how this program impacted the expanded use of coal and coke petrography.
D W Horohov - One of the best experts on this subject based on the ideXlab platform.
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the effect of bacterial dose and foal age at challenge on rhodococcus equi infection
Veterinary Microbiology, 2013Co-Authors: M G Sanz, Alan T Loynachan, L Sun, Aline F Oliveira, Patrick Breheny, D W HorohovAbstract:Abstract While Rhodococcus equi remains the most common cause of subacute or chronic granulomatous bronchopneumonia in Foals, development of a relevant model to study R. equi infection has proven difficult. The objective of this study was to identify a challenge dose of R. equi that resulted in slow progressive disease, spontaneous regression of lung lesions and age-dependent susceptibility. Foals less than one-week of age were challenged intratracheally using either 10 6 , 10 5 , 10 4 , 10 3 or 10 2 cfu of R. equi . Two doses (10 3 cfu and 10 5 cfu) were used to challenge 2 and 3-week-old, and 3 and 6-week-old Foals, respectively. Physical examination, thoracic ultrasound and blood work were performed. Foals were euthanized at the end of the study or when clinical signs of pneumonia developed. All Foals were necropsied and their lung lesions scored. Foals challenged with low concentrations of R. equi developed slow progressive pneumonia and approximately 50% of the Foals recovered spontaneously. Likewise, macroscopic (>1 cm diameter) pyogranulomatous lesions were only observed when low doses of R. equi were used. Clinical pneumonia was not seen after low dose challenge in the 3-week-old Foals or in the 6-week-old Foals. This study demonstrates that the use of low doses of R. equi to challenge neonatal Foals provides an improved model for studying this disease. Furthermore, susceptibility to R. equi infection was shown to diminish early in the foal's life, as has been reported in the field.
Hyytiäinen Heli - One of the best experts on this subject based on the ideXlab platform.
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Validation of a tail-mounted triaxial accelerometer for measuring Foals' lying and motor behavior
'Elsevier BV', 2020Co-Authors: Pirinen Nina, Pastell Matti, Mykkänen Anna, Mcgowan Catherine, Hyytiäinen HeliAbstract:Foals' locomotory and lying-down behavior can be an indicator of their health and development. However, measurement tools have not been well described with previously reported attachment sites used on limbs of adult horses unsafe for longer-term data collection in Foals. In this study, a tail-mounted three-dimensional accelerometer was validated for monitoring Foals lying, standing, and walking behavior. Eleven Foals were recruited: four hospitalized and seven at private breeding stables. Accelerometers were attached to the dorsal aspect of the base of each foal's tail and their behavior was video recorded. Hospitalized Foals had continuous video monitoring inside their stalls, and the breeding stable's Foals were monitored outside at pasture for 1-5 periods (mean 42 minutes per period), depending how long they were at the facility. Acceleration was measured using 100 Hz frequency and mean, maximum, and minimum acceleration were recorded in 5 second epochs for x-, y-, and z-axes. Lying, standing, and walking behavior was monitored from videos of all Foals, and the start and end time of each behavior was compared with the corresponding data from the accelerometer. Naive Bayes classifier was developed by using dynamic body acceleration and craniocaudal movement of the tail (tilt along z-axis), to predict a foal's lying behavior. The model was validated; the classifier achieved high accuracy in precision and in classifying Foals' lying behavior (specificity, 0.92; sensitivity, 0.89; precision, 0.98; accuracy, 0.92). The overall accuracy for classifying walking and standing was also good, but the precision was poor (0.46 and 0.24, respectively). When standing and walking behavior was combined to a single "standing or walking" class, the precision improved (specificity, 0.62; sensitivity, 0.92; precision, 0.89; accuracy, 0.92). In conclusion, tail-mounted three-dimensional accelerometer can be used for monitoring Foals' lying behavior. In addition, information regarding standing and walking can be gained with this method. (C) 2020 The Authors. Published by Elsevier Inc.Peer reviewe
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Validation of a tail-mounted triaxial accelerometer for measuring Foals' lying and motor behavior
'Elsevier BV', 2020Co-Authors: Pirinen Nina, Pastell Matti, Mykkänen Anna, Mcgowan Catherine, Hyytiäinen HeliAbstract:Foals' locomotory and lying-down behavior can be an indicator of their health and development. However, measurement tools have not been well described with previously reported attachment sites used on limbs of adult horses unsafe for longer-term data collection in Foals. In this study, a tail-mounted three-dimensional accelerometer was validated for monitoring Foals lying, standing, and walking behavior. Eleven Foals were recruited: four hospitalized and seven at private breeding stables. Accelerometers were attached to the dorsal aspect of the base of each foal's tail and their behavior was video recorded. Hospitalized Foals had continuous video monitoring inside their stalls, and the breeding stable's Foals were monitored outside at pasture for 1-5 periods (mean 42 minutes per period), depending how long they were at the facility. Acceleration was measured using 100 Hz frequency and mean, maximum, and minimum acceleration were recorded in 5 second epochs for x-, y-, and z-axes. Lying, standing, and walking behavior was monitored from videos of all Foals, and the start and end time of each behavior was compared with the corresponding data from the accelerometer. Naive Bayes classifier was developed by using dynamic body acceleration and craniocaudal movement of the tail (tilt along z-axis), to predict a foal's lying behavior. The model was validated; the classifier achieved high accuracy in precision and in classifying Foals' lying behavior (specificity, 0.92; sensitivity, 0.89; precision, 0.98; accuracy, 0.92). The overall accuracy for classifying walking and standing was also good, but the precision was poor (0.46 and 0.24, respectively). When standing and walking behavior was combined to a single “standing or walking” class, the precision improved (specificity, 0.62; sensitivity, 0.92; precision, 0.89; accuracy, 0.92). In conclusion, tail-mounted three-dimensional accelerometer can be used for monitoring Foals' lying behavior. In addition, information regarding standing and walking can be gained with this method
Annemarie T. Kristensen - One of the best experts on this subject based on the ideXlab platform.
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Neonatal alloimmune thrombocytopenia in a quarter horse foal.
Journal of Veterinary Internal Medicine, 1997Co-Authors: Virginia Buechner-maxwell, Leanne Godber, Michael A. Scott, Annemarie T. KristensenAbstract:: Neonatal alloimmune thrombocytopenia is recognized as a spontaneous disease of human infants, piglets, and possibly mules, but it has not been previously reported in horses. A 1-day-old Quarter Horse foal presented to Michigan State University Large Animal Clinic with severe thrombocytopenia of unknown origin. Immunoglobulins that bound to the foal's platelets were identified in the mare's plasma, serum, and milk by indirect assays. The immunoglobulins were further shown to recognize platelets from the foal's full brother, born 1 year earlier. These findings, coupled with the clinical course of the foal during its period of hospitalization, strongly suggest that neonatal alloimmune thrombocytopenia can spontaneously occur in neonatal horses. This diagnosis should be considered for Foals with severe thrombocytopenia when other causes can be excluded, and platelet antibody assays should be used to support this diagnosis.
M G Sanz - One of the best experts on this subject based on the ideXlab platform.
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the effect of bacterial dose and foal age at challenge on rhodococcus equi infection
Veterinary Microbiology, 2013Co-Authors: M G Sanz, Alan T Loynachan, L Sun, Aline F Oliveira, Patrick Breheny, D W HorohovAbstract:Abstract While Rhodococcus equi remains the most common cause of subacute or chronic granulomatous bronchopneumonia in Foals, development of a relevant model to study R. equi infection has proven difficult. The objective of this study was to identify a challenge dose of R. equi that resulted in slow progressive disease, spontaneous regression of lung lesions and age-dependent susceptibility. Foals less than one-week of age were challenged intratracheally using either 10 6 , 10 5 , 10 4 , 10 3 or 10 2 cfu of R. equi . Two doses (10 3 cfu and 10 5 cfu) were used to challenge 2 and 3-week-old, and 3 and 6-week-old Foals, respectively. Physical examination, thoracic ultrasound and blood work were performed. Foals were euthanized at the end of the study or when clinical signs of pneumonia developed. All Foals were necropsied and their lung lesions scored. Foals challenged with low concentrations of R. equi developed slow progressive pneumonia and approximately 50% of the Foals recovered spontaneously. Likewise, macroscopic (>1 cm diameter) pyogranulomatous lesions were only observed when low doses of R. equi were used. Clinical pneumonia was not seen after low dose challenge in the 3-week-old Foals or in the 6-week-old Foals. This study demonstrates that the use of low doses of R. equi to challenge neonatal Foals provides an improved model for studying this disease. Furthermore, susceptibility to R. equi infection was shown to diminish early in the foal's life, as has been reported in the field.
