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"Jacobson, Emily"
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Whistler in watercolor : lovely little games
For renowned artist James McNeill Whistler (1834-1903), watercolor was the medium through which he reinvented himself in the 1880s and painted his way into posterity. No one was more smitten with Whistler and his works than Gilded Age industrialist Charles Lang Freer, who amassed the world's largest collection of watercolors by the artist and included them in his bequest to the Smithsonian in 1906. Freer's collection comprises more than fifty examples of Whistler's watercolors, yet these works have never left the confines of the Freer Gallery of Art in Washington, DC. This landmark book takes a fresh look at the exhibition and reception of Whistler's watercolors in Britain and the United States and provides a new scientific analysis of his materials and techniques, from the papers he used to the pigments he chose.
Microbiome network traits in the rumen predict average daily gain in beef cattle under different backgrounding systems
by
Omontese, Bobwealth O.
,
Gomez, Andres
,
Webb, Megan J.
in
Agriculture
,
Average daily gain
,
Backgrounding systems
2022
Background
Backgrounding (BKG), the stage between weaning and finishing, significantly impacts feedlot performance in beef cattle; however, the contributions of the rumen microbiome to this growth stage remain unexplored. A longitudinal study was designed to assess how BKG affects rumen bacterial communities and average daily gain (ADG) in beef cattle. At weaning, 38 calves were randomly assigned to three BKG systems for 55 days (d): a high roughage diet within a dry lot (DL, n = 13); annual cover crop within a strip plot (CC, n = 13); and perennial pasture vegetation within rotational paddocks (PP, n = 12), as before weaning. After BKG, all calves were placed in a feedlot for 142 d and finished with a high energy ration. Calves were weighed periodically from weaning to finishing to determine ADG. Rumen bacterial communities were profiled by collecting fluid samples via oral probe and sequencing the V4 region of the 16S rRNA bacterial gene, at weaning, during BKG and finishing.
Results
Rumen bacterial communities diverged drastically among calves once they were placed in each BKG system, including sharp decreases in alpha diversity for CC and DL calves only (
P
< 0.001). During BKG, DL calves showed a substantial increase of Proteobacteria (Succinivibrionaceae family) (P < 0.001), which also corresponded with greater ADG (
P
< 0.05). At the finishing stage, Proteobacteria bloomed for all calves, with no previous alpha or beta diversity differences being retained between groups. However, at finishing, PP calves showed a compensatory ADG, particularly greater than that in calves coming from DL BKG (
P
= 0.02). Microbiome network traits such as lower average shortest path length, and increased neighbor connectivity, degree, number and strength of bacterial interactions between rumen bacteria better predicted ADG during BKG and finishing than variation in specific taxonomic profiles.
Conclusions
Bacterial co-abundance interactions, as measured by network theory approaches, better predicted growth performance in beef cattle during BKG and finishing, than the abundance of specific taxa. These findings underscore the importance of early post weaning stages as potential targets for feeding interventions that can enhance metabolic interactions between rumen bacteria, to increase productive performance in beef cattle.
Journal Article
The genome of the soybean gall midge (Resseliella maxima)
2023
The cecidomyiid fly, soybean gall midge, Resseliella maxima Gagné, is a recently discovered insect that feeds on soybean plants in the Midwestern United States. R. maxima larvae feed on soybean stems that may induce plant death and can cause considerable yield losses, making it an important agricultural pest. From three pools of 50 adults each, we used long-read nanopore sequencing to assemble a R. maxima reference genome. The final genome assembly is 206 Mb with 64.88× coverage, consisting of 1,009 contigs with an N50 size of 714 kb. The assembly is high quality with a Benchmarking Universal Single-Copy Ortholog (BUSCO) score of 87.8%. Genome-wide GC level is 31.60%, and DNA methylation was measured at 1.07%. The R. maxima genome is comprised of 21.73% repetitive DNA, which is in line with other cecidomyiids. Protein prediction annotated 14,798 coding genes with 89.9% protein BUSCO score. Mitogenome analysis indicated that R. maxima assembly is a single circular contig of 15,301 bp and shares highest identity to the mitogenome of the Asian rice gall midge, Orseolia oryzae Wood-Mason. The R. maxima genome has one of the highest completeness levels for a cecidomyiid and will provide a resource for research focused on the biology, genetics, and evolution of cecidomyiids, as well as plant–insect interactions in this important agricultural pest.
Journal Article
Indigenous knowledge in conservation science and the process of a two‐way research collaboration
by
Burn, Samantha
,
Smith, Benjamin C. D.
,
Millar, Gabrial
in
academic research
,
Aquatic birds
,
Birds
2022
Environmental research often occurs in short bursts with the duration of fieldwork often governed by the time constraints of a funding body. Collaborations between academic researchers and Indigenous People have occurred for many years and the exchange of information can create value and knowledge for both participants in the collaboration. Indigenous People play a vital role as knowledge keepers in environmental science and can, in some instances, provide a more secure repository of local knowledge and conservation practice than digital archives. In this essay, Indigenous Rangers on Larrakia country in Darwin, Australia, and a non‐Indigenous academic researcher describe how value‐creation was increased for both parties involved in a collaborative project on the migratory shorebird far eastern curlew (Numenius madagascariensis). We share our experiences of expectations, the development of methods, the codeveloped goals and complementary ways of thinking to manage threatened species at a local scale, the scale at which the local Larrakia People operate. Through our collaboration, we show that both parties within the collaboration can benefit and create value for a species of conservation concern that has not typically been considered culturally important.
Journal Article
Seeds of Discomfort: An Unusual Case of Pediatric Abdominal Pain
2023
This case describes a seven-year-old healthy boy who presented with seven days of abdominal pain, small-volume liquid stools, tenesmus, fevers, and dehydration after consuming an unknown amount of shelled watermelon seeds. He was ultimately found to have a large rectal seed bezoar that caused irritation, resulting in stercoral colitis with rectal inflammation. He was additionally found to have sigmoid volvulus during one of his disimpactions, which was also likely secondary to his rectal seed bezoar. This case uniquely highlights the importance of maintaining an index of suspicion for rectal seed bezoars, discusses previously unreported pediatric complications of rectal seed bezoars, including stercoral colitis and sigmoid volvulus, and addresses the management of this rare presentation.
Journal Article
A Brief Acceptance and Commitment Therapy Based Intervention for Distressed Graduate Students
2019
Graduate students report to experience distress at high rates. Research suggests that self-care behaviors such as sleep, exercise, and mindfulness practice can helpful for mental health and wellbeing. The current study examined the effectiveness of a brief Acceptance and Commitment Therapy (ACT) based intervention on increasing self-care behaviors in distressed graduate students at the University of Mississippi (N = 7). The intervention was delivered in three 60-minute individual sessions. The effects of the intervention were examined using a concurrent multiple baseline across participants design. Results indicated that five out of seven participants showed increases in self-reported self-care behaviors after the start of the intervention, and three maintained their gains in the post-intervention period. Implications of these findings for distressed graduate students are discussed.
Dissertation
Teacher and Student Experiences with the One-To-One Technology Model at the High School Level
2017
The following study was done to research how teachers and students are experiencing the one-to one educational model at the high school level. The research questions used to guide the study are as follows: How do teachers and students experience one-to-one learning? What are the implications of using the one-to-one technology model? To research these questions, a case study approach was used. Teachers were interviewed as well as both teachers and students completing surveys about how they experience the one-to-one technology every day. The main topics that were studied were 21st century skills, classroom uses and student engagement, teacher attitudes, training, technology support, costs, and student responsibility. Data was collected and analyzed from teacher interviews, student surveys, and teacher surveys. Data analysis indicated that there are both positive and negative experiences when it comes to using the one-to-one technology model at the high school level. The advantages are student responsibility and student engagement, communication, and convenience. The disadvantages are student responsibility, restrictions, and training. This paper indicates experiences and implications of the model as well as recommendations for its use.
Dissertation
Investigating the relation between self-compassion and romantic relationships
2016
Self-compassion has recently emerged as a component of psychological health. Research on self-compassion processes has grown in recent years, and shows that self-compassion is related to lower levels of psychological distress and higher levels of positive affect. The current study examined the extent to which self-compassion is related to the quality of romantic relationships. Undergraduates at the University of Mississippi (N=261) completed online self-report questionnaires assessing self-compassion and relationship quality. Correlational and hierarchical multiple regression analyses were conducted in order to assess the relation between self-compassion and relationship quality. Results indicated that self-compassion was positively and significantly correlated with relationship quality, and that self-compassion was a unique predictor of relationship quality. Implications of these findings for romantic relationships are discussed.
Dissertation
Home Remedy Books in Britain: Medicine and the Female Reader, 1800–1867
2011
In the preface to his 1852 Dictionary of Domestic Medicine and Household Surgery, Spencer Thompson wrote: \"But health will fail, either in old or young, and accidents will happen, in spite of the most careful precaution.\" With this concise statement, Thompson summarized the universal human desire to combat illness, injury, and hurt with action and knowledge. The more efficient ability to spread ideas and technology in nineteenth-century Britain led to increased production and use of home remedy books. Although women traditionally represented the agents of remedy and care within the domestic sphere (centuries prior to the nineteenth century), a struggle between the supposed inherent nurturing capabilities of womanhood and the professional medical realm occurred within the rhetoric of the home remedy genre during this period. Cultural mores allowed and pushed women to take up duties of nursing in the home, regardless of advice given by male physicians. Despite remedy book physician-authors' attempts to dictate appropriate medical care in the home through the writing of home remedy books, British women read, interpreted, and used home remedy books in ways that undermined medical control.
Dissertation
The Genome of the Soybean Gall Midge ( Resseliella maxima )
2023
The cecidomyiid fly, soybean gall midge,
Gagné, is a recently discovered insect that feeds on soybean plants in the Midwest US.
larvae feed on soybean stems which may induce plant death and can cause considerable yield losses, making it an important agricultural pest. From three pools of 50 adults each, we used long-read nanopore sequencing to assemble a
reference genome. The final genome assembly is 206 Mb with 64.88X coverage, consisting of 1009 contigs with an N50 size of 714 kb. The assembly is high quality with a BUSCO score of 87.8%. Genome-wide GC level is 31.60% and DNA methylation was measured at 1.07%. The
genome is comprised of 21.73% repetitive DNA, which is in line with other cecidomyiids. Protein prediction annotated 14,798 coding genes with 89.9% protein BUSCO score. Mitogenome analysis indicated that
assembly is a single circular contig of 15,301 bp and shares highest identity to the mitogenome of the Asian rice gall midge,
(Wood-Mason). The
genome has one of the highest completeness levels for a cecidomyiid and will provide a resource for research focused on the biology, genetics, and evolution of cecidomyiids, as well as plant-insect interactions in this important agricultural pest.
Journal Article