Landau Model for Commensurate-Commensurate Phase Transitions in Uniaxial Improper Ferroelectric Crystals

We propose the Landau model for lock-in phase transitions in uniaxially modulated improper ferroelectric incommensurate-commensurate systems of class I. It includes Umklapp terms of third and fourth order and secondary order parameter representing the local polarization. The corresponding phase diagram has the structure of harmless staircase, with the allowed wave numbers obeying the Farey tree algorithm. Among the stable commensurate phases only those with periods equal to odd number of lattice constants have finite macroscopic polarizations. These results are in excellent agreement with experimental findings in some A2BX4 compounds.Comment: 9 pages, 5 figures, revtex, to be published in Journal of Physics: Cond. Matter as a Letter to the Edito

Confirmation of S-metolachlor resistance in Palmer amaranth (Amaranthus palmeri)

AbstractS-Metolachlor is commonly used by soybean and cotton growers, especially with POST treatments for overlapping residuals, to obtain season-long control of glyphosate- and acetolactate synthase (ALS)–resistant Palmer amaranth. In Crittenden County, AR, reports of Palmer amaranth escapes following S-metolachlor treatment were first noted at field sites near Crawfordsville and Marion in 2016. Field and greenhouse experiments were conducted to confirm S-metolachlor resistance and to test for cross-resistance to other very-long-chain fatty acid (VLCFA)–inhibiting herbicides in Palmer amaranth accessions from Crawfordsville and Marion. Palmer amaranth control in the field (soil <3% organic matter) 14 d after treatment (DAT) was ≥94% with a 1× rate of acetochlor (1,472 g ai ha–1; emulsifiable concentrate formulation) and dimethenamid-P (631 g ai ha–1). However, S-metolachlor at 1,064 g ai ha–1 provided only 76% control, which was not significantly different from the 1/2× and 1/4× rates of dimethenamid-P and acetochlor (66% to 85%). In the greenhouse, Palmer amaranth accessions from Marion and Crawfordsville were 9.8 and 8.3 times more resistant to S-metolachlor compared with two susceptible accessions based on LD50 values obtained from dose–response experiments. Two-thirds and 1.5 times S-metolachlor at 1,064 g ha–1 were the estimated rates required to obtain 90% mortality of the Crawfordsville and Marion accessions, respectively. Data collected from the field and greenhouse confirm that these accessions have evolved a low level of resistance to S-metolachlor. In an agar-based assay, the level of resistance in the Marion accession was significantly reduced in the presence of a glutathione S-transferase (GST) inhibitor, suggesting that GSTs are the probable resistance mechanism. With respect to other VLCFA-inhibiting herbicides, Marion and Crawfordsville accessions were not cross-resistant to acetochlor, dimethenamid-P, or pyroxasulfone. However, both accessions, based on LD50 values obtained from greenhouse dose–response experiments, exhibited reduced sensitivity (1.5- to 3.6-fold) to the tested VLCFA-inhibiting herbicides

Clark Memorandum: Fall 1993

Becoming J. Reuben Clark\u27s Law School (Marion G. Romney) Integrity, the Evidence Within (Neal A. Maxwell) Growing Up (Elaine L. Jack) Satisfaction in the Law (David C. Campbell)https://digitalcommons.law.byu.edu/clarkmemorandum/1013/thumbnail.jp

Book Reviews

Reviews of the following books: A History of Lumbering in Maine: 1861-1960 by David C. Smith; Edward Preble: A Naval Biography: 1761-1807 by Christopher McKee; New England and the Sea by Robert G. Albion, William A. Baker, Benjamin W. Larabee and Marion V. Brewington; Naval and Maritime History: An Annotated Bibliography by Robert G. Albio

Alien Registration- Johnson, Marion G. (Easton, Aroostook County)

https://digitalmaine.com/alien_docs/26405/thumbnail.jp

Alien Registration- Cail, Marion G. (Brownville, Piscataquis County)

https://digitalmaine.com/alien_docs/10021/thumbnail.jp

Clark Memorandum: Fall 1990

Acquired by Character, Not by Money (Kenneth W. Starr) Fundamentals and Initiatives (Elder Russell M. Nelson) Christ and the Code (Joseph G. Allegretti) Truth: a Shield to Memory (Elder Marion D. Hanks)https://digitalcommons.law.byu.edu/clarkmemorandum/1007/thumbnail.jp

To Oregon by Ox-Team in '47

"[The author] starts his booklet with an interview with Jeptha T. Hunt, County Commissioner of Marion County, Oregon, whose father, G. W. Hunt, crossed the plains in 1847 and who went from Oregon to California in 1848 to participate in the gold mining rush.

Mnemonics for Overlapping Groups

Most mnemonics are constructed to aid in recalling the members of a single group, such as ROY G BIV for the colors of the spectrum, or Jesus Christ Made Seattle Under Protest for the Seattle east-west streets Jefferson, James, Cherry, Columbia, Marion, Madison, Spring, Seneca, University, Union, Pike and Pine

Determination of True Metabolizable Energy Content of Bobwhite Foods

True metabolizable energy (TME) and nitrogen-corrected true metabolizable energy (TMEn) bioassays were used to determine available energy content of several northern bobwhite (Colinus virginianus) foods. A proximate analysis and trypsin inhibitor (TI) activity were also determined for each food. Corn (Zea mays) was found to contain the highest amount ofTMEn (4.37 kcal/g dry matter) compared with Fayette soybeans (Glycine max; 3.93 kcal/g), Korean lespedeza (Kummerowia stipuki.ceae; 3.73 kcal/g), Marion lespedeza (K. striata; 3.71 kcal/g), tick-trefoil (Desmodium spp.; 3.51 kcal/g), and wild trailing (WI\u27) soybeans (3.24 kcal/g). The higher TMEn value of corn was attributed to its high digestible carbohydrate content and lack of appreciable TI activity