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Evaluation of wood treatment effectiveness using thermal desorption-pyrolysis gas chromatography-mass spectrometry
No full textA thermal desorption-pyrolysis gas chromatography with mass spectrometric detection (TD-Pyr-GC-MS) method was developed that enables a comprehensive analysis of preservatives as well as native wood constituents in treated wood. The developed method is based on thermal desorption, i.e., extraction of wood preservatives, followed by pyrolysis to investigate changes in the occurrence of characteristic wood building blocks (e.g., guaiacol derivatives). We implemented combined MS data acquisition (i.e., SITI) consisting of selected ion monitoring (SIM) and total ion current (TIC) and allowing for low limits of detection of preservatives in SIM mode and TIC detection of any evolving species. The matrix detection limits were 0.3-20 ng depending on the preservative, requiring only 100 µg sample size. The method quantified wood preservatives in aged wood samples in various states of deterioration in a range of 18-166 µg/g. A decline in the concentration of some of the target preservatives, like tebuconazole, in the environmentally weathered samples was observed as compared to those less aged, while some persisted, such as permethrin. We also noted changes in the occurrence of long-chain linear alkanes (C20–C25) used as preservative solvents providing insights into the nature of wood decay as a result of long-term environmental exposure. Finally, the method provided elution profiles of wood extractives, i.e., products of native wood polymers’ pyrolytic decomposition. The observed wood decay did not show a conclusive relationship with the level of wood extractives but occurred along with the gradual depletion of hydrocarbons (treatment solvent), most likely due to restriction in preservatives’ mobility within the wood
Understanding Provider Perspectives to Strengthen Materal Care in North Dakota: 2025 Non Birthing Facility Provider Survey Report
No full textA survey-based snapshot of provider experiences, gaps, and opportunities in prenatal and postpartum care -- informing the path toward better outcomes for facilities and mothers
Senator Quentin Burdick
No full textUndated photograph of U.S. Senator Quentin Burdick.
The son of Representative Usher Burdick, Quentin Burdick represented North Dakota in the United States House of Representatives from 1958 to 1960 and the United States Senate from 1960 until his death in 1992.https://commons.und.edu/nd-politics-photos/1582/thumbnail.jp
Word of Mouth
No full textA print of historical photos overlaid with typeface, telling a story.https://commons.und.edu/uac-all/4927/thumbnail.jp
Day Dreaming
No full textBlue, green ceramic raindrop, hangs on wall.https://commons.und.edu/uac-all/4930/thumbnail.jp
John Von Ruden
No full textUndated photograph of John Von Ruden (1934-2007). Von had a long career in public service and was Vice-Chair and Chair of the North Dakota Republican Party.https://commons.und.edu/nd-politics-photos/1639/thumbnail.jp
Hotel Dakotah
No full textOnce hailed as the finest hotel west of the Twin Cities, Grand Forks’ Hotel Dacotah endured two devastating fires—in 1897 and 1943—but was rebuilt each time, rising as a symbol of resilience. Originally opened in 1889, it featured modern luxuries and became a city landmark. After decades of change, legal battles, and new ownership, the Dacotah ended its hotel era and lived on as an apartment building. (Today in history: June 22, 1986, grandforkherald.com)https://commons.und.edu/gf-city-photos/1286/thumbnail.jp
A Flower Parade, circa 1880
No full textOne of the many Flower Parades that began to become popular around 1900. The ideas began in the summer of 1899. The parades that were held the summer became the precedent to many that followed.
This picture during the Flower Parade shows two horses, each with and escort that has on a suit and top hat, pulling a carriage completely covered (even the wheels) with flowers. There are two women sitting in the carriage and wearing nice dresses.https://commons.und.edu/gf-city-photos/1288/thumbnail.jp
Stupidity, Song Lyrics, undated
No full textSong Lyrics for Stupidity by Bill Gessner. One sheet of paper containing typed lyrics. The fifth stanza\u27s lyrics sixty-six has been my fix implies he wrote the lyrics when he was 66, possibly dating the song to 2013 or 2014. The song also appears to contain many references to someone being in jail.https://commons.und.edu/gessner-lyrics/1021/thumbnail.jp
Mine Pit Song, 1998
No full textSong lyrics for Mine Pit Song, 1998 by Bill Gessner and Carolyn King. 5 sheets of paper including handwritten lyrics, typed out lyrics and guitar chords. The typed up documents show revisions made. The documents indicate this song was created on August 9th and 10th of 1998. The song references the Iron Range in northern Minnesota.https://commons.und.edu/gessner-lyrics/1027/thumbnail.jp