M A Stephen
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Explore the profile of M A Stephen including associated specialties, affiliations and a list of published articles.
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9
Citations
14
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Recent Articles
1.
Stephen M, Burke C, Steele N, Pryce J, Meier S, Amer P, et al.
J Dairy Sci
. 2023 Dec;
107(6):3700-3715.
PMID: 38135043
Reproductive performance is a key determinant of cow longevity in a pasture-based, seasonal dairy system. Unfortunately, direct fertility phenotypes such as intercalving interval or pregnancy rate tend to have low...
2.
Stephen M, Burke C, Steele N, Pryce J, Meier S, Amer P, et al.
J Dairy Sci
. 2023 Aug;
106(11):7846-7860.
PMID: 37641287
Anogenital distance (AGD) is a moderately heritable trait that can be measured at a young age that may provide an opportunity to indirectly select for improved fertility in dairy cattle....
3.
Steele N, Stephen M, Kuhn-Sherlock B, Hendriks S, Meier S, Phyn C, et al.
N Z Vet J
. 2023 Jul;
71(5):213-225.
PMID: 37431287
Aims: To explore animal- and herd-level risk factors influencing age at puberty in predominantly Holstein-Friesian dairy heifers managed in seasonal, pasture-based systems. Methods: Heifers born in spring 2018 (n = ...
4.
Stephen M, Meier S, Price M, Pryce J, Burke C, Phyn C, et al.
JDS Commun
. 2022 Nov;
3(5):339-342.
PMID: 36340907
Age at puberty (AGEP) is a moderately heritable trait in cattle that may be predictive of an animal's genetic merit for reproductive success later in life. In addition, under some...
5.
Nicholson J, Desantolo A, Yan M, Wisk P, Mangan B, Puc G, et al.
Opt Express
. 2016 Aug;
24(17):19961-8.
PMID: 27557271
We demonstrate the first polarization-maintaining, very-large-mode-area, Er-doped fiber amplifier with ~1100 μm effective area. The amplifier is core pumped by a Raman fiber laser and is used to generate single-frequency,...
6.
Dallas J, Afzal R, Stephen M
Appl Opt
. 2010 Nov;
35(9):1427-9.
PMID: 21085254
We have demonstrated and characterized a Q-switched Nd:YAG laser under continuous operation for over 7 billion shots. Through periodic monitoring of the laser's vital signs, the system dynamics were decoupled...
7.
Dilley C, Stephen M, Savage-Leuchs M
Opt Express
. 2009 Jun;
15(22):14389-95.
PMID: 19550717
We present results of pulsed, narrowband amplification at 1540.6nm using a polarization maintaining, large mode area gain fiber codoped with erbium and ytterbium. At a repetition rate of 55 kHz,...
8.
Katzmarzyk P, Leonard W, Stephen M, Berti P, Ross A
Am J Phys Anthropol
. 1996 Apr;
99(4):537-45.
PMID: 8779337
Estimates of daily energy expenditure are important for many areas of research in human ecology and adaptability. The most common technique for estimating human energy expenditure under field conditions, the...
9.
Leonard W, Katzmarzyk P, Stephen M, Ross A
Am J Clin Nutr
. 1995 May;
61(5):1146-52.
PMID: 7733041
Accurate estimates of total daily energy expenditure (TDEE) are critical to studies of the nutritional adaptation of human populations. This study compared the standard factorial method with the recently developed...