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Journal articles on the topic 'Blackhawk'

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Published: 4 June 2021

Last updated: 26 January 2023

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1

Ghaderi, A., J. D. Kelly, M. W. Adams, A. W. Saettler, G. L. Hosfield, G. V. Varner, M. A. Uebersax, and J. Taylor. "Registration of ‘Blackhawk’ Tropical Black Bean." Crop Science 30, no. 3 (May 1990): 744–45. http://dx.doi.org/10.2135/cropsci1990.0011183x003000030061x.

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2

Bryant, Barbara J. "Chartered planes, rescue trucks, and a Blackhawk." Transfusion 58, no. 4 (April 2018): 842. http://dx.doi.org/10.1111/trf.14454.

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3

Royal, Cindy, and James W. Tankard. "Literary Journalism Techniques Create Compelling Blackhawk down Web Site." Newspaper Research Journal 25, no. 4 (September 2004): 82–88. http://dx.doi.org/10.1177/073953290402500408.

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4

Shaller, Philip J., Macan Doroudian, and Michael W. Hart. "The Eureka Valley Landslide: Evidence of a Dual Failure Mechanism for a Long-Runout Landslide." Lithosphere 2020, no. 1 (December 2, 2020): 1–26. http://dx.doi.org/10.2113/2020/8860819.

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Abstract Long-runout landslides are well-known and notorious geologic hazards in many mountainous parts of the world. Commonly encompassing enormous volumes of debris, these rapid mass movements place populations at risk through both direct impacts and indirect hazards, such as downstream flooding. Despite their evident risks, the mechanics of these large-scale landslides remain both enigmatic and controversial. In this work, we illuminate the inner workings of one exceptionally well-exposed and well-preserved long-runout landslide of late Pleistocene age located in Eureka Valley, east-central California, Death Valley National Park. The landslide originated in the detachment of more than 5 million m3 of Cambrian bedrock from a rugged northwest-facing outcrop in the northern Last Chance Range. Its relatively compact scale, well-preserved morphology, varied lithologic composition, and strategic dissection by erosional processes render it an exceptional laboratory for the study of the long-runout phenomenon in a dry environment. The landslide in Eureka Valley resembles, in miniature, morphologically similar “Blackhawk-like” landslides on Earth, Mars, and minor planet Ceres, including the well-known but much larger Blackhawk landslide of southern California. Like these other landslides, the landslide in Eureka Valley consists of a lobate, distally raised main lobe bounded by raised lateral levees. Like other terrestrial examples, it is principally composed of pervasively fractured, clast-supported breccia. Based on the geologic characteristics of the landslide and its inferred kinematics, a two-part emplacement mechanism is advanced: (1) a clast-breakage mechanism (cataclasis) active in the bedrock canyon areas and (2) sliding on a substrate of saturated sediments encountered and liquefied by the main lobe of the landslide as it exited the main source canyon. Mechanisms previously hypothesized to explain the high-speed runout and morphology of the landslide and its Blackhawk-like analogs are demonstrably inconsistent with the geology, geomorphology, and mineralogy of the subject deposit and its depositional environment.

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5

Johnson, K. A. "MARGINAL MARINE FORAMINIFERA OF THE BLACKHAWK FORMATION (LATE CRETACEOUS, UTAH)." Journal of Foraminiferal Research 35, no. 1 (January 1, 2005): 50–64. http://dx.doi.org/10.2113/35.1.50.

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6

Blok, Robert J. "Simulator Sickness in the U.S. Army UH-60A Blackhawk Flight Simulator." Military Medicine 157, no. 3 (March 1, 1992): 109–10. http://dx.doi.org/10.1093/milmed/157.3.109.

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7

Buchanan, Paul G. "US failures in strategy and the ‘CNN effect’." Pacific Journalism Review : Te Koakoa 17, no. 2 (October 31, 2011): 218–22. http://dx.doi.org/10.24135/pjr.v17i2.360.

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Reviewed book by Robert G. Patman Publication date: October, 2011 In this short, but interesting book, Robert Patman argues that US policy failures in the lead up to and aftermath of the October 1993 ‘Blackhawk Down’ incident in Mogadishu facilitated the conditions for the terrorist attacks on the US mainland in 2001. The thesis that the US merely reaped the bad fruit of its foreign policy on 9/11 is not new, but Patman’s approach is.

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8

McClintock, Anne. "Imperial Ghosting and National Tragedy: Revenants from Hiroshima and Indian Country in the War on Terror." Publications of the Modern Language Association of America 129, no. 4 (October 2014): 819–29. http://dx.doi.org/10.1632/pmla.2014.129.4.819.

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What does it mean to saythat we live in tragic times? the 9-11 attack was certainly a tragedy, but whose tragedy was it? What constitutes a national tragedy in the first place? Ned Blackhawk points out that a nation unable to confront its past will surely compromise its civic future (293). What are the consequences of sacralizing one national calamity (the 9-11 attack) as a world-historic tragedy while ghosting the other foundational violences of United States history, which have returned to haunt the post-9-11 era as unspeakable premonitions and accusatory revenants? “Mark me,” said the ghost.

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9

Canelon, Jose I., Heidar A. Malki, Stephen A. Jacklin, and Leang S. Shieh. "An Adaptive Neural Network Model for Vibration Control in a Blackhawk Helicopter." Journal of the American Helicopter Society 50, no. 4 (October 1, 2005): 349–53. http://dx.doi.org/10.4050/1.3092871.

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10

Bromley, Richard G., and A. A. Ekdale. "Ophiomorpha irregulaire(Trace Fossil): Redescription from the Cretaceous of the Book Cliffs and Wasatch Plateau, Utah." Journal of Paleontology 72, no. 4 (July 1998): 773–78. http://dx.doi.org/10.1017/s0022336000040476.

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The trace fossilOphiomorpha irregulaireFrey, Howard and Pryor, 1978, has been described chiefly from the Campanian (Upper Cretaceous) of the Book Cliffs of Carbon County, central Utah, U.S.A. Owing to the lack of type specimens and a well-defined type locality, a neotype and new paratypes are designated. Abundant material in the Spring Canyon Member of the Blackhawk Formation at Coal Creek Canyon, Book Cliffs, serves to supply a type locality and allows a more detailed description of the trace fossil than has been available hitherto, leading to an emended diagnosis. At the type locality,O. irregulaireis a shallow-tier trace fossil occurring in marine, delta-front or back-barrier, muddy, fine-grained sandstone. It probably represents the work of a crustacean deposit feeder.

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11

Goicovich, Francis. "NED BLACKHAWK, Violence over the Land. Indians and Empires in the early American West." Historia (Santiago) 42, no. 1 (June 2009): 240–43. http://dx.doi.org/10.4067/s0717-71942009000100008.

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12

Modarelli, Giuseppe Carlo, Roberta Paradiso, Carmen Arena, Stefania De Pascale, and Marie-Christine Van Labeke. "High Light Intensity from Blue-Red LEDs Enhance Photosynthetic Performance, Plant Growth, and Optical Properties of Red Lettuce in Controlled Environment." Horticulturae 8, no. 2 (January 27, 2022): 114. http://dx.doi.org/10.3390/horticulturae8020114.

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Plant factories using artificial light to produce vegetables have high energy costs due to the high demand for electricity for lighting. Compared to conventional light sources, light-emitting diodes (LEDs) offer the possibility of tailoring the light spectrum and regulating light intensity and are more energy-efficient in terms of energy conversion regardless of the levels of lighting intensity. Optimal light intensity and daily light integral (DLI) requirements are key factors for plant growth; however, their values vary among species and varieties. Our experiment aimed to identify the best light intensity to produce lettuce plants in controlled environment. Lettuce plants of the type Batavia cv ‘Blackhawk’ were grown in plastic pots filled with perlite and peat (20:80 v/v) for 33 days in a growth chamber under blue (B, 20%) and red (R, 80%) LED light at a photosynthetic flux density of 130 µmol m−2 s−1 (BR 130, DLI 7.49 mol m−2 d−1), 259 µmol m−2 s−1 (BR 259, DLI 14.92 mol m−2 d−1), and 389 µmol m−2 s−1 (BR 389, DLI 22.41 mol m−2 d−1). Our results showed that increasing light intensity and DLI promotes net photosynthesis, sustains the electron transport rate (ETR), and stimulates the synthesis of anthocyanins and carotenoids, with positive results for plant photoprotection. Furthermore, the decreases in vegetation indexes (photochemical reflectance index (PRI), greenness, and modified chlorophyll absorption in reflectance index (MCARI1)) also indicate changes in photosynthetic pigment content in response to plant acclimation to different DLIs. Among the three light intensities, 389 µmol m−2 s−1 (DLI 22.41 mol m−2 d−1) gave the best results for growing Batavia red lettuce cv ‘Blackhawk’, since it enhances both production and qualitative traits. These results highlight the importance of a proper light intensity to promote plant growth and qualitative traits and to reach high production targets. Hence, preliminary screening of plant performance under different light treatments is recommended to optimise plant response to artificial lighting.

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13

Ortiz, Paul. "A Civics Primer for American History." American Historical Review 125, no. 5 (December 2020): 1773–77. http://dx.doi.org/10.1093/ahr/rhaa514.

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Abstract This AHR Roundtable features four short essays on Jill Lepore’s widely read synthesis of American history, These Truths: A History of the United States (2018). Lepore’s framework insists that the “self-evident” truths of the nation’s founding were anything but. The driving force of her narrative is the struggle of those excluded from this magic circle—really, the majority of the country’s population—to extend those truths beyond their narrow core of elite white men. The four reviewers—Ned Blackhawk, Matt Garcia, Mary Beth Norton, and Paul Ortiz—appreciate the “shared sense of national destiny” that clearly informs Lepore book. At the same time, they chide her for what they regard as significant omissions. These critical essays invite further consideration of how best to write a fully inclusive (and therefore dramatically reconfigured) national narrative

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14

Blackhawk, Ned. "The Iron Cage of Erasure: American Indian Sovereignty in Jill Lepore’s These Truths." American Historical Review 125, no. 5 (December 2020): 1752–63. http://dx.doi.org/10.1093/ahr/rhaa515.

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Abstract This AHR Roundtable features four short essays on Jill Lepore’s widely read synthesis of American history, These Truths: A History of the United States (2018). Lepore’s framework insists that the “self-evident” truths of the nation’s founding were anything but. The driving force of her narrative is the struggle of those excluded from this magic circle—really, the majority of the country’s population—to extend those truths beyond their narrow core of elite white men. The four reviewers—Ned Blackhawk, Matt Garcia, Mary Beth Norton, and Paul Ortiz—appreciate the “shared sense of national destiny” that clearly informs Lepore book. At the same time, they chide her for what they regard as significant omissions. These critical essays invite further consideration of how best to write a fully inclusive (and therefore dramatically reconfigured) national narrative

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15

Norton, Mary Beth. "Truths . . . Audacious and Flawed." American Historical Review 125, no. 5 (December 2020): 1764–67. http://dx.doi.org/10.1093/ahr/rhaa516.

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Abstract This AHR Roundtable features four short essays on Jill Lepore’s widely read synthesis of American history, These Truths: A History of the United States (2018). Lepore’s framework insists that the “self-evident” truths of the nation’s founding were anything but. The driving force of her narrative is the struggle of those excluded from this magic circle—really, the majority of the country’s population—to extend those truths beyond their narrow core of elite white men. The four reviewers—Ned Blackhawk, Matt Garcia, Mary Beth Norton, and Paul Ortiz—appreciate the “shared sense of national destiny” that clearly informs Lepore book. At the same time, they chide her for what they regard as significant omissions. These critical essays invite further consideration of how best to write a fully inclusive (and therefore dramatically reconfigured) national narrative

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16

Garcia, Matt. "Lepore’s America, “Our America”?" American Historical Review 125, no. 5 (December 2020): 1768–72. http://dx.doi.org/10.1093/ahr/rhaa517.

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Abstract This AHR Roundtable features four short essays on Jill Lepore’s widely read synthesis of American history, These Truths: A History of the United States (2018). Lepore’s framework insists that the “self-evident” truths of the nation’s founding were anything but. The driving force of her narrative is the struggle of those excluded from this magic circle—really, the majority of the country’s population—to extend those truths beyond their narrow core of elite white men. The four reviewers—Ned Blackhawk, Matt Garcia, Mary Beth Norton, and Paul Ortiz—appreciate the “shared sense of national destiny” that clearly informs Lepore book. At the same time, they chide her for what they regard as significant omissions. These critical essays invite further consideration of how best to write a fully inclusive (and therefore dramatically reconfigured) national narrative

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17

KING, M. RYAN, TERRY A. GATES, MURRAY K. GINGRAS, LINDSAY E. ZANNO, and S. GEORGE PEMBERTON. "TRANSGRESSIVE EROSION EXPRESSED AS A GLOSSIFUNGITES-BEARING WOODGROUND: AN EXAMPLE FROM THE BLACKHAWK FORMATION, UTAH." PALAIOS 33, no. 1 (January 16, 2018): 29–35. http://dx.doi.org/10.2110/palo.2016.111.

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18

Bergon, Frank. "Violence over the Land: Indians and Empires in the Early American West by Ned Blackhawk." Western American Literature 43, no. 1 (2008): 78–79. http://dx.doi.org/10.1353/wal.2008.0076.

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19

Venot, C., L. Figueroa, R. A. Brennan, T. R. Wildeman, D. Reisman, and M. Sieczkowski. "COMPARING CHITIN AND ORGANIC SUBSTRATES ON THE NATIONAL TUNNEL WATERS IN BLACKHAWK, COLORADO FOR MANGANESE REMOVAL." Journal American Society of Mining and Reclamation 2008, no. 1 (June 30, 2008): 1352–66. http://dx.doi.org/10.21000/jasmr08011352.

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20

Frey, Robert W., and James D. Howard. "Trace fossils and depositional sequences in a clastic shelf setting, Upper Cretaceous of Utah." Journal of Paleontology 64, no. 5 (September 1990): 803–20. http://dx.doi.org/10.1017/s0022336000019004.

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In Coal Creek Canyon, Utah, the Spring Canyon Member of the Blackhawk Formation is divisible into four regressive hemicycles of deposition, each representing the downdip part of a nearshore-to-offshore sequence. The first and fourth hemicycles are best developed. Individual bedding units span middle-shoreface to lower-offshore lithofacies, the latter corresponding to a thin intertongue of Mancos Shale.Trace fossil assemblages include ~22 ichnospecies and 17 ichnogenera: Ancorichnus, Aulichnites, Chondrites, Cylindrichnus, Ophiomorpha, Palaeophycus, Phoebichnus, Planolites, Rosselia, Schaubcylindrichnus, Scolicia, Skolithos, Taenidium, Teichichnus, Terebellina, Thalassinoides, and Uchirites. Diversity and abundance of ichnospecies are greater in nearshore than in offshore lithofacies. Distal deposits are typified by obscure bioturbate textures: Cylindrichnus concentricus, Palaeophycus heberti, and Rosselia socialis are prevalent through the remainder of the lithofacies suite. Ophiomorpha irregulaire and Schaubcylindrichnus coronus are most common in middle-shoreface beds and Chondrites ichnosp. in upper-offshore beds; Ophiomorpha nodosa and O. annulata also are common in this part of the sequence.

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21

Hambrick, Marion E., Tara Q. Mahoney, and Rich Calabrese. "Clicking for a Cause: Using Social Media Campaigns to Drive Awareness for Golf Tournaments and Charitable Organizations." Case Studies in Sport Management 1, no. 1 (January 2012): 1–6. http://dx.doi.org/10.1123/cssm.1.1.1.

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Sport industry leaders have recognized the popularity of social media; however, some have struggled with quantifying the benefits of such usage (Fisher, 2009). This case explores the potential opportunities social media sites can provide to sport organizations. Golf tournament organizer TampaTourneys, LLC created an administrative Facebook page to keep its Facebook users informed about events. The organization also used the page to promote a cause related marketing campaign benefitting a charitable fundraiser. Partnering with Blackhawk Computers, TampaTourneys initiated a week-long campaign, which encouraged the tournament organizer’s Facebook fans to tell their respective Facebook friends about the fundraiser and become fans of the TampaTourneys Facebook page. In turn, the organization made a monetary donation on behalf of its current and new fans. Based on the campaign’s success, TampaTourneys decided to initiate a second and longer fundraising effort. The case asks students to analyze data collected from the first fundraising campaign and develop a new campaign for the tournament organizer.

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22

Rittersbacher, A., J. A. Howell, and S. J. Buckley. "Analysis Of Fluvial Architecture In the Blackhawk Formation, Wasatch Plateau, Utah, U.S.A., Using Large 3D Photorealistic Models." Journal of Sedimentary Research 84, no. 2 (February 24, 2014): 72–87. http://dx.doi.org/10.2110/jsr.2014.12.

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23

Adams, M. M., and J. P. Bhattacharya. "No Change in Fluvial Style Across a Sequence Boundary, Cretaceous Blackhawk and Castlegate Formations of Central Utah, U.S.A." Journal of Sedimentary Research 75, no. 6 (November 1, 2005): 1038–51. http://dx.doi.org/10.2110/jsr.2005.080.

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24

Sahoo, Hiranya, M. Royhan Gani, Gary J. Hampson, Nahid D. Gani, and Andrew Ranson. "Facies- to sandbody-scale heterogeneity in a tight-gas fluvial reservoir analog: Blackhawk Formation, Wasatch Plateau, Utah, USA." Marine and Petroleum Geology 78 (December 2016): 48–69. http://dx.doi.org/10.1016/j.marpetgeo.2016.02.005.

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25

Flood, Y. S., and G. J. Hampson. "Facies And Architectural Analysis To Interpret Avulsion Style and Variability: Upper Cretaceous Blackhawk Formation, Wasatch Plateau, Central Utah, U.S.A." Journal of Sedimentary Research 84, no. 9 (August 28, 2014): 743–62. http://dx.doi.org/10.2110/jsr.2014.59.

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26

Eide, Christian Haug, John Howell, and Simon Buckley. "Distribution of discontinuous mudstone beds within wave-dominated shallow-marine deposits: Star Point Sandstone and Blackhawk Formation, Eastern Utah." AAPG Bulletin 98, no. 7 (July 2014): 1401–29. http://dx.doi.org/10.1306/01201413106.

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27

Yoshida, S. "Sequence and facies architecture of the upper Blackhawk Formation and the Lower Castlegate Sandstone (Upper Cretaceous), Book Cliffs, Utah, USA." Sedimentary Geology 136, no. 3-4 (November 2000): 239–76. http://dx.doi.org/10.1016/s0037-0738(00)00104-4.

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28

Pettit, Bridget S., Mike Blum, Mark Pecha, Noah McLean, Nicolas C. Bartschi, and Joel E. Saylor. "Detrital-Zircon U-Pb Paleodrainage Reconstruction and Geochronology of the Campanian Blackhawk–Castlegate Succession, Wasatch Plateau and Book Cliffs, Utah, U.S.A." Journal of Sedimentary Research 89, no. 4 (April 17, 2019): 273–92. http://dx.doi.org/10.2110/jsr.2019.18.

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29

Taylor, Kevin G., Rob L. Gawthorpe, and Sophia Fannon-Howell. "Basin-scale diagenetic alteration of shoreface sandstones in the Upper Cretaceous Spring Canyon and Aberdeen Members, Blackhawk Formation, Book Cliffs, Utah." Sedimentary Geology 172, no. 1-2 (November 2004): 99–115. http://dx.doi.org/10.1016/j.sedgeo.2004.08.001.

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30

Khoshlahjeh, Maryam, and Farhan Gandhi. "Extendable Chord Rotors for Helicopter Envelope Expansion and Performance Improvement." Journal of the American Helicopter Society 59, no. 1 (January 1, 2014): 1–10. http://dx.doi.org/10.4050/jahs.59.012007.

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This study explores the benefits of rotor chord extension in stall-dominant conditions. Simulations are based on a UH-60A Blackhawk helicopter with an effective chord increase of 20% realized by extending a trailing-edge plate (TEP) through a slit in the trailing edge between 63% and 83% blade span. Since TEP extension changes the baseline SC-1094R8 airfoil profile, two-dimensional aerodynamic coefficients of the modified profile from Navier–Stokes computational fluid dynamics calculations are used, coupled with 12 × 12 dynamic inflow and the Leishman–Beddoes dynamic stall model in the Rotorcraft Comprehensive Analysis System. While a fixed 20% larger chord produces comparable advantages to TEP extension in stall-dominant conditions, the rotor power requirements increase by up to nearly 4% for low gross weight, low-altitude operations, a penalty easily avoided with TEP retracted. From the simulations in the study, reductions of up to nearly 18% in rotor power requirements were observed with TEP for operation at high gross weight and altitude. Furthermore, increases of around 18 kt in maximum speed, 1500 lb in maximum gross weight capability, and 1800 ftin maximum altitude were observed. TEP extension generally reduces maximum angles of attack on the retreating side and weakens stall. Lift generally increases over the annulus where the TEP is present but reduces over the outer rim because the nose-down pitching moments produce larger nose-down elastic tip twist. With TEP extension, the offloading of the outer rim reduces drag, rotor torque, and power.

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31

Cruden, D. M., and O. Hungr. "The debris of the Frank Slide and theories of rockslide–avalanche mobility." Canadian Journal of Earth Sciences 23, no. 3 (March 1, 1986): 425–32. http://dx.doi.org/10.1139/e86-044.

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The Frank Slide, a 30 × 106 m3 rockslide–avalanche of Palaeozoic limestone, occurred in April 1903 from the east face of Turtle Mountain in the Crowsnest Pass region of southwestern Alberta, Canada.The reconstruction of the Canadian Pacific Railway (CPR) line created a cut up to 16 m high across the deposit, giving a unique cross section nearly the depth of the debris. The debris shows vertical sorting. The base material is crushed limestone, mainly of sand and gravel size, and contains rounded pebbles from till or alluvial deposits on the surface of separation. The upper surface of the debris is an accumulation of large, predominantly angular boulders. Grain-size analyses by sieving and by "area-by-number" counts demonstrate a gradual increase in grain size with height above the base of the cut. Such inverse grading with fines concentrated at the base of the debris indicates that the landslide was not fluidized by gas pore pressures.The base material has run ahead of the coarse debris of the slide, which usually forms a second distinct scarp up to 300 m from the edge of the slide debris. Lateral ridges and distal rims have formed at only three places on the slide's margins, all close to crests of steep slopes the debris has run up. The Frank Slide then is not a slide of Shreve's Blackhawk type. Support for boulders in the debris probably came from dispersive forces and motion-induced vibration.

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32

Reeve, W. P. "NED BLACKHAWK. Violence over the Land: Indians and Empires in the Early American West. Cambridge, Mass.: Harvard University Press. 2006. Pp. 372. $35.00." American Historical Review 113, no. 1 (February 1, 2008): 190–91. http://dx.doi.org/10.1086/ahr.113.1.190.

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33

Lipps, Jere H., and Karen L. Wetmore. "Transfers of algal, microfossil, plant, and vertebrate materials to the University of California Museum of Paleontology." Journal of Paleontology 67, no. 5 (September 1993): 894–98. http://dx.doi.org/10.1017/s0022336000037161.

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The university of California Museum of Paleontology (UCMP), located on the Berkeley Campus, is a major repository of fossils and paleontological materials. The collection, one of the largest in the nation, originated in 1873 and has been added to continuously since then. In 1921, the Museum of Paleontology was officially initiated with an endowment though the generosity of Annie Alexander of Oakland, California (Grinnell, 1958). The UCMP collections are divided into four specimen collection management units and one collection of paleontological materials, such as rock, sediment, and amber samples, and various teaching collections. The specimen collection units are Fossil Prokaryotes and Protists, Fossil and Recent Invertebrates, Paleobotany and Palynology, and Vertebrate Paleontology. Each of these units has its own manager and each consists of hundreds of thousands of specimens or more and thousands of primary and secondary type specimens. The Museum is supported by the Annie Alexander Endowment and the University of California, Berkeley. It has a staff of 11, and a group of faculty curators, affiliate faculty curators from other University of California campuses, research associates, and associated graduate and undergraduate students. It is a general purpose research museum open to the scientific community and, although it does no formal instruction, it provides instructional exhibits and teaching collections at Berkeley and other campuses. It publishes Paleobios (ISSN 0031-0298), an occasional publication containing a variety of paleontological, peer-reviewed papers. UCMP is also involved in public and school activities at the Museum in Berkeley and at the University of California, Berkeley, Museum of Science, Art and Culture, at Blackhawk Plaza, Danville, California.

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34

Hampson, G. J., T. O. Jewell, N. Irfan, M. R. Gani, and B. Bracken. "Modest Change In Fluvial Style With Varying Accommodation In Regressive Alluvial-To-Coastal-Plain Wedge: Upper Cretaceous Blackhawk Formation, Wasatch Plateau, Central Utah, U.S.A." Journal of Sedimentary Research 83, no. 2 (February 12, 2013): 145–69. http://dx.doi.org/10.2110/jsr.2013.8.

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35

HAMPSON, GARY J., M. ROYHAN GANI, HIRANYA SAHOO, ANDREAS RITTERSBACHER, NAWAZISH IRFAN, ANDREW RANSON, THOMAS O. JEWELL, et al. "Controls on large‐scale patterns of fluvial sandbody distribution in alluvial to coastal plain strata: Upper Cretaceous Blackhawk Formation, Wasatch Plateau, Central Utah, USA." Sedimentology 59, no. 7 (July 27, 2012): 2226–58. http://dx.doi.org/10.1111/j.1365-3091.2012.01342.x.

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36

Onyenanu, God'spower I., Carl E. M. M. Jacquemyn, Gavin H. Graham, Gary J. Hampson, Peter J. R. Fitch, and Matthew D. Jackson. "Geometry, distribution and fill of erosional scours in a heterolithic, distal lower shoreface sandstone reservoir analogue: Grassy Member, Blackhawk Formation, Book Cliffs, Utah, USA." Sedimentology 65, no. 5 (March 2, 2018): 1731–60. http://dx.doi.org/10.1111/sed.12444.

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37

Flood, Y. S., and G. J. Hampson. "Quantitative Analysis of the Dimensions and Distribution of Channelized Fluvial Sandbodies Within A Large Outcrop Dataset: Upper Cretaceous Blackhawk Formation, Wasatch Plateau, Central Utah, U.S.A." Journal of Sedimentary Research 85, no. 4 (March 20, 2015): 315–36. http://dx.doi.org/10.2110/jsr.2015.25.

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Davies, Roy, John Howell, Ron Boyd, Stephen Flint, and Claus Diessel. "High-resolution sequence-stratigraphic correlation between shallow-marine and terrestrial strata: Examples from the Sunnyside Member of the Cretaceous Blackhawk Formation, Book Cliffs, eastern Utah." AAPG Bulletin 90, no. 7 (July 2006): 1121–40. http://dx.doi.org/10.1306/02210604077.

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39

Pattison, Simon A. J. "Using classic outcrops to revise sequence stratigraphic models: Reevaluating the Campanian Desert Member (Blackhawk Formation) to lower Castlegate Sandstone interval, Book Cliffs, Utah and Colorado, USA." Geology 47, no. 1 (November 9, 2018): 11–14. http://dx.doi.org/10.1130/g45592.1.

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40

Gandhi, F., C. Duling, and F. Straub. "On power and actuation requirement in swashplateless primary control of helicopters using trailing-edge flaps." Aeronautical Journal 118, no. 1203 (May 2014): 503–21. http://dx.doi.org/10.1017/s0001924000009337.

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Abstract This paper examines three specific aspects pertaining to the trailing-edge flap (TEF) enabled swashplateless primary control of a helicopter. The study is based on a utility helicopter very similar to the UH-60A Blackhawk helicopter, with rotor torsion frequency reduced to 2·1/rev, and 20% chord TEFs extending from 70-90% span. The questions addressed in the paper are the power penalty due to aerodynamic drag associated with TEF control, the pitch-index required to limit the range of TEF deflections over variations in aircraft gross-weight and airspeed, and the influence of rotor RPM variation on swashplateless primary control. Results indicate that the power penalty associated with TEF enabled primary control at high speeds is in the range of 6-7%, due to increased drag on the advancing side in the region of the TEFs and at the blade tips. At low to moderate speeds the increase in power is 2-4% on average, more dependent on the pitch-index, and due to drag increase over most of the azimuth in the region of the TEFs. A variation in pitch-index from 16° for lower speeds and gross weights, to 20-22° for higher speeds and gross weights, would reduce the steady level flight TEF defection requirements to under ±3°, leaving sufficient control margin. Increase in rotor RPM does not increase directly increase thrust (as with a stiff-torsion rotor) but reduces the rotating torsion frequency, and together with the increased dynamic pressures increases the sensitivity to TEF control. At low to moderate speeds a 9% increase in RPM reduces the maximum TEF deflections required by about 1°, but is accompanied by a large increase in rotor power. Conversely, a 9% RPM reduction decreases rotor power required, but the TEF defections required increase by 1–1·5°.

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41

Hall, T. D. "Violence over the Land: Indians and Empires in the Early American West. By Ned Blackhawk. (Cambridge: Harvard University Press, 2006. xii, 372 pp. $35.00, ISBN 978-0-674-02290-4.)." Journal of American History 94, no. 2 (September 1, 2007): 577–78. http://dx.doi.org/10.2307/25095021.

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Darnell, Regna. "Indigenous Visions: Rediscovering the World of Franz Boas. Ned Blackhawk and Isaiah Lorado Wilner, eds. New Haven: Yale University Press, 2018, 416 pp. $35.00, paper. ISBN 978-0-300-19651-1." Journal of Anthropological Research 75, no. 4 (December 2019): 528–29. http://dx.doi.org/10.1086/705981.

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Lupin, Janifar H., and Gary J. Hampson. "Sediment-routing controls on sandstone bulk petrographic composition and texture across an ancient shelf: Example from Cretaceous Western Interior Basin, Utah and Colorado, U.S.A." Journal of Sedimentary Research 90, no. 10 (October 1, 2020): 1389–409. http://dx.doi.org/10.2110/jsr.2020.044.

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ABSTRACT Sediment-routing controls on sandstone texture and bulk petrography have been evaluated in linked alluvial–coastal–shelfal deposits of the Upper Cretaceous Castlegate Sandstone, Blackhawk Formation, Star Point Sandstone, and Mancos Shale (Western Interior Basin, Utah and Colorado, USA) using thin-section analysis of representative outcrop samples in the context of a high-resolution sequence stratigraphic and paleogeographic framework. The studied strata record deposition from two styles of sediment-routing system within an overfilled foredeep and contiguous intra-continental seaway. First, multiple transverse drainages supplied sand to fluvial, shoreline, and shelf segments of sediment-routing systems characterized by down-dip transport distances of 150–450 km and significant strike-oriented sediment transport along the shoreline. Second, the distal shoreline–shelf segment of an axially supplied sediment-routing system was characterized by sand transport for a distance of c. 300 km. Bulk petrographic composition indicates that transverse sediment-routing systems were sourced from catchments that supplied quartz-rich sand with a subordinate lithic component, while the large axial sediment-routing system was sourced from a catchment(s) supplying slightly more feldspathic sand. Thin-section measurements of mean grain size, sorting, skewness, and ratio of minimum-to-maximum diameter (a proxy for sphericity) are similar for sandstones deposited in fluvial, shoreline, and shelf segments of the transverse sediment-routing systems and in the shoreline–shelf segment of the axial sediment-routing systems, although hydrodynamic sorting is important in locally segregating grain-size populations within each segment. Further, textural analysis of detrital quartz, feldspar, and lithic sand-grain populations shows little evidence of relative change in mean grain size or apparent grain sphericity with downsystem distance, implying that sand-grain populations of different petrographic composition did not undergo significant differential mechanical breakdown during transport. Instead, the textural characteristics of these sand-grain populations are inferred to have been controlled mainly by bedrock lithology and recycling in source catchments. The textural signal of sediment-source areas then propagated downsystem in the sand fraction of detrital sediment supply. This inference is supported by the fine- to medium-grained, well- to very well-sorted character of all sandstone samples, consistent with recycling of sandstones and quartzites from the Sevier fold-and-thrust belt.

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Cleves, Rachel Hope. "Ned Blackhawk, Violence over the Land: Indians and Empires in the Early American West. London and Cambridge, MA: Harvard University Press, 2006. xii + 372 pp. ISBN: 978-0-674-02290-4 (hbk.). $35.00; £22.95; €32.30." Itinerario 31, no. 3 (November 2007): 158–60. http://dx.doi.org/10.1017/s0165115300001522.

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Lynagh, Norman. "Captain Arthur Blackham." Weather 63, no. 10 (October 2008): 315–16. http://dx.doi.org/10.1002/wea.286.

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Taylor, K. G., and J. H. S. Macquaker. "Diagenetic alterations in a silt- and clay-rich mudstone succession: an example from the Upper Cretaceous Mancos Shale of Utah, USA." Clay Minerals 49, no. 2 (April 2014): 213–27. http://dx.doi.org/10.1180/claymin.2014.049.2.05.

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An understanding of the nature and scales of diagenetic variability within organic-rich mudstones is critical to the accurate assessment of shale-gas reservoir properties, as well as for elucidating chemical evolution pathways within mudstones. Here we integrate field observations with thin section descriptions (optical and electron optical techniques) and mineralogical data for the Blackhawk Member time-equivalent Mancos Shale in Book Cliffs, Utah, to determine the impacts of early and burial diagenesis on this mudstone succession.The detrital assemblage in the Mancos Shale comprises quartz-silt, feldspar, clay minerals, dolomite and organic matter (TOC of 1 to 2.5%). Biogenic silica is negligible. Field mapping reveals laterally continuous (km scale), ferroan dolomite cemented units up to 0.3 m thick, are present. These cemented units cap both coarsening-upward units (1 to 3 m thick), and stacked successions of coarsening-upward units (5 to 15 m thick). These upward-coarsening sediment packages, capped by dolomite cemented strata, correlate to bedsets and parasequences in updip settings. Pervasive cementation in these dolomite-cemented units is likely to have occurred prior to compaction as a result of bacterially mediated respiratory processes. Cementation at these levels is particularly evident because cement precipitation occurred during breaks in sediment accumulation below marine flooding surfaces. The abundance of dolomite cements highlights the importance of macroscopic-scale diagenetic carbonate mobility in these mudstones.In addition to carbonate-cements, diagenetic alteration and precipitation of quartz and alumina-silicate minerals are also important in these mudstones. Kaolinite is present both in uncompacted test of organisms and as vein fills in septarian concretions. Kaolinite precipitation is interpreted to have occurred prior to significant compaction and indicates that both silicon and aluminium were mobile during early diagenesis. We interpret the abundance of early diagenetic kaolinite cement to be the result of Al-mobilization by organic acids generated during organic matter oxidation reactions, with the Al sourced from poorly crystalline detrital aluminium oxides and clay minerals. There is also indirect evidence for burial diagenetic kaolinitization of feldspar grains. Quartz cement takes the form of quartz overgrowths and microcrystalline quartz crystals. Textures and CL spectra for the quartz microcrystalline cement suggests that recrystallization of biogenic silica (opal-A) was likely to have been an important source for quartz cements, although smectite-to-illite transformation may have contributed some. These mineral phases highlight that microscopic-scale diagenetic mobility of silica is important, even within mudstones lacking obvious sources of biogenic silica and is likely to be an important processes in a wide range of mudstones.

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Taylor, Monica J. "Harold Blackham (1903–2009)." Journal of Moral Education 38, no. 2 (June 2009): 247–50. http://dx.doi.org/10.1080/03057240902792819.

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Dwan, Berni. "Honeynets aim to sting blackhats." Network Security 2004, no. 9 (September 2004): 15–18. http://dx.doi.org/10.1016/s1353-4858(04)00133-3.

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Carroll, James T. "Violence over the Land: Indians and Empires in the Early American West, by Ned BlackhawkViolence over the Land: Indians and Empires in the Early American West, by Ned Blackhawk. Cambridge, Massachusetts, Harvard University Press, 2006. xii, 372 pp. $35.00 US (cloth)." Canadian Journal of History 42, no. 2 (September 2007): 344–45. http://dx.doi.org/10.3138/cjh.42.2.344.

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Griffin, Jason J. "IBA Formulation, Concentration, and Stock Plant Growth Stage Affect Rooting of Stem Cuttings of Viburnum rufidulum." Journal of Environmental Horticulture 26, no. 1 (March 1, 2008): 1–3. http://dx.doi.org/10.24266/0738-2898-26.1.1.

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Abstract Viburnum rufidulum Raf. (southern or rusty blackhaw) has potential to be a popular landscape plant as it is an attractive large shrub tolerant of many common landscape stresses. However, propagation difficulties have thus far limited wide scale use. Therefore, the influence of IBA formulation and concentration on adventitious rooting of stem cuttings of southern blackhaw taken at different stock plant growth stages throughout the year were investigated. Liquid formulations of the potassium salt (K-salt) of indolebutyric acid (K-IBA) at 0, 3000, 6000, or 9000 ppm (0, 0.3, 0.6, or 0.9%) as well as talc formulations of IBA at 1000, 3000, or 8000 ppm (0.1, 0.3 or 0.8%) were utilized. Talc formulations failed to stimulate rooting regardless of concentration or growth stage. A quick-dip of K-IBA increased rooting percentage at all growth stages. Softwood and hardwood cuttings had the highest rooting percentages. Hardwood cuttings treated with 6000 ppm (0.6%) or 9000 ppm (0.9%) rooted 90 and 100%, respectively. Softwood cuttings treated with 6000 ppm (0.6%) rooted 87%. K-IBA improved root number per rooted cutting for softwood cuttings, whereas root length was unaffected by K-IBA at any growth stage.

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