Sioux City: Sowing the farmers\u27 profit

Photograph not included in Web versio

Gender Roles in the Camping Situation

The intent of this thesis is to investigate the extent to which people depart from traditional gender roles in a situation of leisure. The lack of normative structure in the camping situation offers a chance for participants to do sex typed tasks differently than in the more structured home situation. Participant observation was used because of the exploratory nature of the project. Research was conducted the month of July, 1973. Four Oregon campgrounds were visited. Campsite clusters to be observed were chosen randomly. A systemic time schedule was developed in which various clusters were observed at as many different times as possible. Findings indicate that gender role behavior patterns that are used at home are also used in the camping situation. Women usually perform tasks that are done at home everyday while men usually perform tasks unique to the camping situation

Praxis: An Editorial Statement

Praxis: An Editorial Statemen

Classification cards applied to team and individual learning.

Thesis (Ed.M.)--Boston Universit

Book Reviews

Reviews of the following books: A Brides Passage: Susan Hathorns Year Under Sail edited by Catherine Petroski; Inventing Acadia: Artists and Tourists at Mount Desert by Pamela J. Belanger; Migration and the Origins of the English Atlantic World by Alison Games; Johnson\u27s Kingdom: The Story of a Nineteenth Century Industrial Kingdom in the Town of Wayne, Maine by Edward Kallop; Saltwater Foodways: New Englanders and Their Food, at Sea and Ashore in the Nineteenth Century By Sandra L. Olive

Gene flow from single and stacked herbicide-resistant rice (\u3ci\u3eOryza sativa\u3c/i\u3e): Modeling occurrence of multiple herbicide-resistant weedy rice

Background: Provisia™ rice (PV), a non-genetically engineered (GE) quizalofop-resistant rice, will provide growers with an additional option for weed management to use in conjunction with Clearfield® rice (CL) production. Modeling compared the impact of stacking resistance traits versus single traits in rice on introgression of the resistance trait to weedy rice (also called red rice). Common weed management practices were applied to 2-, 3- and 4-year crop rotations, and resistant and multiple-resistant weedy rice seeds, seedlings and mature plants were tracked for 15 years. Results: Two-year crop rotations resulted in resistant weedy rice after 2 years with abundant populations (exceeding 0.4 weedy rice plants m–2) occurring after 7 years. When stacked trait rice was rotated with soybeans in a 3-year rotation and with soybeans and CL in a 4-year rotation, multiple-resistance occurred after 2–5 years with abundant populations present in 4–9 years. When CL rice, PV rice, and soybeans were used in 3- and 4-year rotations, the median time of first appearance of multiple-resistance was 7–11 years and reached abundant levels in 10–15 years. Conclusion: Maintaining separate CL and PV rice systems, in rotation with other crops and herbicides, minimized the evolution of multiple herbicide-resistant weedy rice through gene flow compared to stacking herbicide resistance traits

Large-Scale Discovery of ERK2 Substrates Identifies ERK-Mediated Transcriptional Regulation by ETV3

The mitogen-activated protein kinase (MAPK) extracellular signal–regulated kinase 2 (ERK2) is ubiquitously expressed in mammalian tissues and is involved in a wide range of biological processes. Although MAPKs have been intensely studied, identification of their substrates remains challenging. We have optimized a chemical genetic system using analog-sensitive ERK2, a form of ERK2 engineered to use an analog of adenosine 5′-triphosphate (ATP), to tag and isolate ERK2 substrates in vitro. This approach identified 80 proteins phosphorylated by ERK2, 13 of which are known ERK2 substrates. The 80 substrates are associated with diverse cellular processes, including regulation of transcription and translation, mRNA processing, and regulation of the activity of the Rho family guanosine triphosphatases. We found that one of the newly identified substrates, ETV3 (a member of the E twenty-six family of transcriptional regulators), was extensively phosphorylated on sites within canonical and noncanonical ERK motifs. Phosphorylation of ETV3 regulated transcription by preventing its binding to DNA at promoters for several thousand genes, including some involved in negative feedback regulation of itself and of upstream signals.Massachusetts Institute of Technology (Eugene Bell Career Development Chair)David H. Koch Institute for Integrative Cancer Research at MIT (Graduate Fellowship)Massachusetts Institute of Technology (Whitaker Health Science Fellowship)National Science Foundation (U.S.) (Graduate Research Fellowship)Pfizer Inc.National Institutes of Health (U.S.) (grant ES002109)National Institutes of Health (U.S.) (grant R01DK42816)National Institutes of Health (U.S.) (grant R01CA118705)National Institutes of Health (U.S.) (grant U54CA112967

Food defense : protecting the food supply from intentional harm (2009)

New 11/09/2M