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Articles 5131 - 5160 of 8069
Full-Text Articles in Entire DC Network
A New Shortbilled Marlin Of The Genus Makaira, From The Yorktown Formation, (Early Pliocene), Eastern North Carolina At Lee Creek Mine, Usa, Harry L. Fierstine
A New Shortbilled Marlin Of The Genus Makaira, From The Yorktown Formation, (Early Pliocene), Eastern North Carolina At Lee Creek Mine, Usa, Harry L. Fierstine
Biological Sciences
An unusually short rostrum from the Yorktown Formation, Early Pliocene, eastern North Carolina at Lee Creek Mine, USA, is described as a new species, Makaira purdyi. The rostrum is morphologically distinct from any Recent or fossil istiophorid in the following combination of characters: (1) fused portion of premaxillae is short and stout with denticlcs covering at least the distal one-half of its dorsal surface; (2) at one-fourth bill length, the cross-section is nearly round (depth/width = 0.95). The new marlin is distinguished from the extant shortbill spearfish, Tetrapturus angustirostris, and any istiophorid with a short rostrum caused by …
Reductive Dehydroxy Coupling Of 2-(Hydroxymethyl)Indenes To Prepare Ethano-Bridged Bis(2-Indenyl) Ansa-Titanocenes, Hasan Palandoken, Justin K. Wyatt, Shawn R. Hitchcock, Marilyn M. Olmstead, Michael H. Nantz
Reductive Dehydroxy Coupling Of 2-(Hydroxymethyl)Indenes To Prepare Ethano-Bridged Bis(2-Indenyl) Ansa-Titanocenes, Hasan Palandoken, Justin K. Wyatt, Shawn R. Hitchcock, Marilyn M. Olmstead, Michael H. Nantz
Chemistry and Biochemistry
New examples of ansa-titanocenes derived from 1,2-bis(2-indenyl)ethane have been prepared. The titanium-mediated reductive coupling of 2-(hydroxymethyl)indenes provided a convenient method for substrate dimerization. Alkyl substitution of the indene ring at C(3) improved the regioselectivity of the reductive coupling to provide the ethylene bis(2-indenyl)ansa-ligands in 29–62% yield.
Mustang Daily, April 23, 1999
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, April 22, 1999
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Proceedings Of The 1999 Onr Decision-Support Workshop Series: A Decision-Making Tools Workshop, Collaborative Agent Design Research Center
Proceedings Of The 1999 Onr Decision-Support Workshop Series: A Decision-Making Tools Workshop, Collaborative Agent Design Research Center
Collaborative Agent Design (CAD) Research Center
The rationale of the Workshop rests on some very simple observations. It is well known that every situation encountered by individuals and organizations demands an appropriate response. The choice of such a response from among a multitude of options is the decision-making process. Simple situations that give rise to a small number of options allow the decision maker to decide on a course of action without great effort. This state of affairs changes dramatically when the situations are complex and involve a large number of factors. In this case, an extensive field of options is engendered that makes it impossible …
Collaborative Decision-Support And The Human-Machine Relationship, Jens G. Pohl
Collaborative Decision-Support And The Human-Machine Relationship, Jens G. Pohl
Collaborative Agent Design (CAD) Research Center
Human beings are inquisitive creatures who seek explanations for all that they observe and experience in their living environment. While this quest for understanding is central to our success in adapting to a changing environment, it is also a major cause of our willingness to accept partial understandings and superficial explanations when the degree of complexity of the problem situation confounds our current cognitive capabilities. In other words, a superficial or partial explanation is considered better than no explanation at all. As flawed as this approach may be, it has helped us to solve difficult problems in stages. By first …
Mustang Daily, April 16, 1999
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, April 14, 1999
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
April 14, 1999 Cal Poly Report, Public Affairs Office
April 14, 1999 Cal Poly Report, Public Affairs Office
Cal Poly Report
No abstract provided.
Academic Senate - Agenda, 4/13/1999, Academic Senate
Academic Senate - Agenda, 4/13/1999, Academic Senate
Academic Senate Agendas
No abstract provided.
Mustang Daily, April 13, 1999
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, April 1, 1999
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Environmental Imperatives Reconsidered, Terry L. Jones, Gary M. Brown, L. Mark Raab, Janet L. Mcvickar, W. Geoffrey Spaulding, Douglas J. Kennett, Andrew York, Phillip L. Walker
Environmental Imperatives Reconsidered, Terry L. Jones, Gary M. Brown, L. Mark Raab, Janet L. Mcvickar, W. Geoffrey Spaulding, Douglas J. Kennett, Andrew York, Phillip L. Walker
Social Sciences
Review of late Holocene paleoenvironmental and cultural sequences from four regions of western North America shows striking correlations between drought and changes in subsistence, population, exchange, health, and interpersonal violence during the Medieval Climatic Anomaly (a.d. 800–1350). While ultimate causality is difficult to identify in the archaeological record, synchrony of the environmental and cultural changes and the negative character of many human responses—increased interpersonal violence, deterioration of long-distance exchange relationships, and regional abandonments—suggest widespread demographic crises caused by decreased environmental productivity. The medieval droughts occurred at a unique juncture in the demographic history of western North America when unusually large …
Development And Reproduction Of A Population Of Eretmocerus Eremicus (Hymenoptera: Aphelinidae) On Bemisia Argentifolii (Homoptera: Aleyrodidae), David H. Headrick, Thomas S. Bellows, Jr., Thomas M. Perring
Development And Reproduction Of A Population Of Eretmocerus Eremicus (Hymenoptera: Aphelinidae) On Bemisia Argentifolii (Homoptera: Aleyrodidae), David H. Headrick, Thomas S. Bellows, Jr., Thomas M. Perring
Horticulture and Crop Science
Although the aphelinid parasitoid Eretmocerus eremicus Rose & Zolnerowich is the most abundant naturally occurring parasitoid of Bemisia argentifolii Bellows & Perring in the U.S. desert southwest, its effectiveness in different cropping systems varies. Development and reproduction of a population of this parasitoid attacking B. argentifolii infesting cotton, Gossypium hirsutum L., and sweet potato, Ipomoea batatas L., were quantified and compared. Females potato; there were no significant differences of these parameters between host plant species. A preoviposition period of 0.61 d was recorded, and a maximum number of eggs laid in a day was 69 on cotton and 13 on …
A Conversation With The Bakers, Vicki Hanson
Cal Poly Magazine, Spring 1999
March 31, 1999 Cal Poly Report, Public Affairs Office
March 31, 1999 Cal Poly Report, Public Affairs Office
Cal Poly Report
No abstract provided.
March 17, 1999 Cal Poly Report, Public Affairs Office
March 17, 1999 Cal Poly Report, Public Affairs Office
Cal Poly Report
No abstract provided.
March 17, 1999 Cal Poly Report, Public Affairs Office
March 17, 1999 Cal Poly Report, Public Affairs Office
Cal Poly Report
No abstract provided.
Mustang Daily, March 12, 1999
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, March 5, 1999
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, March 2, 1999
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, February 26, 1999
Mustang Daily, February 26, 1999
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, February 17, 1999
Mustang Daily, February 17, 1999
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
February 10, 1999 Cal Poly Report, Public Affairs Office
February 10, 1999 Cal Poly Report, Public Affairs Office
Cal Poly Report
No abstract provided.
Mustang Daily, February 9, 1999
Mustang Daily, February 9, 1999
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
Mustang Daily, February 3, 1999
Mustang Daily, February 3, 1999
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.
February 3, 1999 Cal Poly Report, Public Affairs Office
February 3, 1999 Cal Poly Report, Public Affairs Office
Cal Poly Report
No abstract provided.
Mustang Daily, February 2, 1999
Mustang Daily, February 2, 1999
Cal Poly Student Newspaper
Student newspaper of California Polytechnic State University, San Luis Obispo, CA.