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169. Is Semen Analysis Useful to Predict the Odds that the Sperm will Meet the Egg?

Author

Holt, W. V.

Subjects
*SEMEN, *HUMAN embryology, *HUMAN reproduction, *HUMAN biology, *SPERMATOZOA
Abstract

Content Any mammalian spermatozoon that achieves successful in vivo fertilization has to perform almost perfectly in many disparate functions and overcome a series of obstacles imposed by the female reproductive tract. This implies that during formation in the testis and epididymis, the spermatozoa did not incur any morphological, metabolic, immunological or genetic abnormalities. Given that the spermatozoa are such highly differentiated cells, this means that every cellular compartment must not only be intact but must also respond appropriately to intracellular and extracellular signals. Assuming that a spermatozoon possesses this level of perfection, and is able to reach and penetrate an oocyte, it can only be regarded as ‘fertile’ if the DNA it carries is intact and able to sustain embryonic development. Although the proportion of inseminated spermatozoa that meet these criteria is vanishingly small, the female reproductive tract applies stringent selection criteria during sperm transport and, as a result, the probability of conception around the time of ovulation is very high. If laboratory tests of semen quality could approach the efficacy of the female reproductive tract, it would be possible to predict the odds of spermatozoa meeting the egg; however, this is not possible at present. In this article, I suggest a simple model to illustrate how a battery of laboratory tests could eventually be used to make these predictions. [ABSTRACT FROM AUTHOR]

Published
2009
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176. Experiments of Transpiration Cooling Inspired Panel Cooling on a Turbine Blade Yielding Film Effectiveness Levels over 95%

Author

Augustin Wambersie, Holt Wong, Peter Ireland, and Ignacio Mayo

Subjects
transpiration cooling, turbine blade, film cooling, pressure sensitive paint, Mechanical engineering and machinery, TJ1-1570
Abstract

Panels were tested at different locations around the turbine blade, on both suction and pressure surfaces. Three different surface porosities were also tested. Results demonstrated that the approach can be very successful with high levels of film cooling effectiveness, exceeding 95%, achieved using low coolant mass flow rates. Increasing the surface porosity also proved to be an important parameter in the panel’s performance. Additionally, staggering the film holes lead to significant positive interactions between individual films, resulting in much improved panel performance.

Published
2021
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177. Letter from Holt W. Bradford to Theodore Roosevelt (1918-12-09)

Author

Bradford, Holt W., Bradford, Holt W., Bradford, Holt W., and Bradford, Holt W.

Abstract

Lieutenant Bradford writes to Theodore Roosevelt that he is his "hero," and that he knew Quentin Roosevelt as a fellow trainee and pilot. He writes that he has "often seen his grave…it is very pretty now."

Published
1918

178. Anguispira; alternata

Author

Holt, W, Holt, W, Holt, W, and Holt, W

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-054648%5DUMMZ-MOL-54622-54658, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/054648/UMMZ-MOL-54622-54658/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

Published
1916

179. Anguispira; solitaria

Author

Holt, W, Holt, W, Holt, W, and Holt, W

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-058547%5DUMMZ-MOL-58519-58555, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/058547/UMMZ-MOL-58519-58555/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

Published
1916

180. Neohelix; albolabris

Author

Holt, W, Holt, W, Holt, W, and Holt, W

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-058548%5DUMMZ-MOL-58519-58555, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/058548/UMMZ-MOL-58519-58555/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

Published
1916

181. Anguispira; alternata

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-125262%5DUMMZ-MOL-125239-125279, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/125262/UMMZ-MOL-125239-125279/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

182. Anguispira; alternata

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-125263%5DUMMZ-MOL-125239-125279, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/125263/UMMZ-MOL-125239-125279/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

183. Anguispira; alternata

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-125260%5DUMMZ-MOL-125239-125279, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/125260/UMMZ-MOL-125239-125279/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

184. Anguispira; solitaria

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-125698%5DUMMZ-MOL-125690-125730, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/125698/UMMZ-MOL-125690-125730/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

185. Anguispira; alternata

Author

Goodrich, C.|Holt, W. P., Goodrich, C.|Holt, W. P., Goodrich, C.|Holt, W. P., and Goodrich, C.|Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-125261%5DUMMZ-MOL-125239-125279, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/125261/UMMZ-MOL-125239-125279/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

186. Anguispira; solitaria

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-125702%5DUMMZ-MOL-125690-125730, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/125702/UMMZ-MOL-125690-125730/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

187. Anguispira; alternata

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-125259%5DUMMZ-MOL-125239-125279, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/125259/UMMZ-MOL-125239-125279/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

188. Mesodon; zaletus

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-105033%5DUMMZ-MOL-104994-105034, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/105033/UMMZ-MOL-104994-105034/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

189. Neohelix; albolabris

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-093803%5DUMMZ-MOL-93800-93840, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/093803/UMMZ-MOL-93800-93840/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

190. Truncilla; truncata

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-247718%5DUMMZ-MOL-247713-247752, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/247718/UMMZ-MOL-247713-247752/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

191. Anguispira; solitaria

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-125701%5DUMMZ-MOL-125690-125730, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/125701/UMMZ-MOL-125690-125730/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

192. Neohelix; albolabris

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-093805%5DUMMZ-MOL-93800-93840, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/093805/UMMZ-MOL-93800-93840/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

193. Neohelix; albolabris

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-093804%5DUMMZ-MOL-93800-93840, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/093804/UMMZ-MOL-93800-93840/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

194. Neohelix; albolabris

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-093806%5DUMMZ-MOL-93800-93840, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/093806/UMMZ-MOL-93800-93840/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

195. Anguispira; solitaria

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-125700%5DUMMZ-MOL-125690-125730, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/125700/UMMZ-MOL-125690-125730/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

196. Anguispira; solitaria

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-125703%5DUMMZ-MOL-125690-125730, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/125703/UMMZ-MOL-125690-125730/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

197. Anguispira; alternata

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-125264%5DUMMZ-MOL-125239-125279, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/125264/UMMZ-MOL-125239-125279/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

198. Anguispira; solitaria

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-125696%5DUMMZ-MOL-125690-125730, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/125696/UMMZ-MOL-125690-125730/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

199. Anguispira; solitaria

Author

Holt, W. P., Holt, W. P., Holt, W. P., and Holt, W. P.

Abstract

http://name.umdl.umich.edu/IC-MOLLUSK1IC-X-125697%5DUMMZ-MOL-125690-125730, https://quod.lib.umich.edu/cgi/i/image/api/thumb/mollusk1ic/125697/UMMZ-MOL-125690-125730/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. These materials may be under copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, contact the UMMZ Mollusks Division professional staff: mollusk1ic-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu.

200. Letter from W. L. Holt to University of Tennessee Librarian

Author

Holt, W. L., Holt, W. L., Holt, W. L., and Holt, W. L.

Abstract

Letter informing the University of Tennessee librarian of a bill for a journal that the University subscribes to that was accidentally mailed to a past administrator (the sender), letting them know that the bill is being forwarded on to them. The sender adds an opinionated postscript related to the recent controversy over evolution being taught on campus.

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