3,327 research outputs found
Letter from Alexander T. Vogelsang to Mr. Snyder regarding the Havasupai reservation with draft of proposed bill
No full textLetter from Alexander Vogelsang to Homer P. Snyder regarding land allocation for the Havasupai Tribe
Great Tit Distribution Map All Data
No full textThis excel file contains all the data used in the following paper: "Distribution and abundance of glucocorticoid and mineralocorticoid receptors throughout the brain of the great tit (Parus major)." by Rebecca A. Senft, Simone L. Meddle and Alexander T. Baugh
The sheets have titles describing their contents. The first is the distribution map for glucocorticoid and mineralocorticoid receptor expression in all regions of the brain in one female great tit, color-coded for expression level. The second contains the information for mineralocorticoid and glucocorticoid expression in the hippocampus and paraventricular nucleus of the hypothalamus across our population of 25 individual great tits. Tables to the right break this information down by individual bird (instead of by image). The third sheet includes mean expression for the population, as well as some demographic variables
Male Cope’s gray treefrogs (Hyla chrysoscelis) in amplexus have elevated and correlated steroid hormones compared to solitary males
No full textGonadal steroid hormones are typically elevated during the breeding season—a finding known as an associated reproductive pattern. Though less studied, there is also evidence, in both sexes, for elevated adrenal/interrenal steroids, including acute elevations on the day of mating. I investigated gonadal and interrenal steroids in wild male Cope’s gray treefrogs at breeding aggregations. I collected blood from males found in amplexus with female mates (amplexed males) and males sampled at the same time and location that were actively advertising vocally and without a mate (solo males). Concentrations of plasma corticosterone, testosterone, and 17β-estradiol (CORT, T and E₂, respectively) were validated and measured. These two categories of males differed in four ways: (1) amplexed males exhibited significantly elevated concentrations of all three steroids compared to solo males (CORT: +347 %; T: +60 %; and E₂: +43 %); (2) these hormone profiles alone accurately predicted male mating category with ca. 83 % accuracy using a discriminant function analysis; (3) amplexed males exhibited significant between-hormone correlations (T and E₂ were positively correlated and CORT and E₂ were negatively correlated) whereas no correlations were found in solo males; (4) amplexed males showed a negative correlation with CORT concentration and the time of night, whereas no such pattern was present in solo males. These findings suggest an acute and strong coactivation of the interrenal and gonadal axes that could drive phenotypic integration during this fitness-determining moment. I discuss these findings and suggest experiments to determine causation, including the role of motor behavior driving endocrine states and the role of female selection on endocrine profiles
The poetical works of Alexander Pope, esq., to which is prefixed the life of the author,
No full textIncludes his translations of Homer, and Parnell's translation of The battle of the frogs and mice (Batrachomyomachia) corrected by Pope.Added t.-p., engr.: The poetical works of Alexander Pope, esq. Including his translation of Homer.Mode of access: Internet
Steroid levels following experimentally induced mating in gray treefrogs during 2024 breeding season (Carver Park Reserve, MN)
No full textData on steroid hormone levels and morphological measures of Cope's gray treefrogs in an experimentally induced amplexus experiment.During amplexus, male frogs clasp a female for several hours prior to gamete release. In this experiment, we tested the hypothesis that amplexus can cause changes in circulating levels of steroid hormones in Cope's gray tree frogs ('Hyla chrysoscelis'). Frogs were collected in breeding ponds in Carver Park Reserve in Minnesota in May and June of 2024. An amplexed pair and two single males were collected in quick succession and brought to the edge of the pond for each experimental trial. In each trial, we quantified levels of testosterone, estradiol, and corticosterone after 90 minutes in four treatment groups: males allowed to enter amplexus with a newly provided female ("amplexus induced"), paired males removed from their mate ("amplexus terminated"), unpaired control males, and the female that was removed from the amplexus terminated male and given to the amplexus induced male.National Science Foundation (IOS-2022253, IOS-21542041)Swarthmore CollegeFreiler, Megan K; Halstead, Liam N; Bee, Mark A; Baugh, Alexander T. (2025). Steroid levels following experimentally induced mating in gray treefrogs during 2024 breeding season (Carver Park Reserve, MN). Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/zy6y-tq15
Heterogeneous and tissue-specific regulation of effector T cell responses by IFN-gamma during Plasmodium berghei ANKA infection.
No full textIFN-γ and T cells are both required for the development of experimental cerebral malaria during Plasmodium berghei ANKA infection. Surprisingly, however, the role of IFN-γ in shaping the effector CD4(+) and CD8(+) T cell response during this infection has not been examined in detail. To address this, we have compared the effector T cell responses in wild-type and IFN-γ(-/-) mice during P. berghei ANKA infection. The expansion of splenic CD4(+) and CD8(+) T cells during P. berghei ANKA infection was unaffected by the absence of IFN-γ, but the contraction phase of the T cell response was significantly attenuated. Splenic T cell activation and effector function were essentially normal in IFN-γ(-/-) mice; however, the migration to, and accumulation of, effector CD4(+) and CD8(+) T cells in the lung, liver, and brain was altered in IFN-γ(-/-) mice. Interestingly, activation and accumulation of T cells in various nonlymphoid organs was differently affected by lack of IFN-γ, suggesting that IFN-γ influences T cell effector function to varying levels in different anatomical locations. Importantly, control of splenic T cell numbers during P. berghei ANKA infection depended on active IFN-γ-dependent environmental signals--leading to T cell apoptosis--rather than upon intrinsic alterations in T cell programming. To our knowledge, this is the first study to fully investigate the role of IFN-γ in modulating T cell function during P. berghei ANKA infection and reveals that IFN-γ is required for efficient contraction of the pool of activated T cells
An introduction to clinical pharmaceutics / Alexander T. Florence.
No full textBook fair2012xiii, 179 pages:This textbook describes a variety of dosage forms and their clinical importance and use. The use and behaviour of dosage forms in different age groups and patient groups will also be considered along with recent developments such as personalised therapies and genomics. It contains relevant examples and clinical case studie
Odoardo Fialetti (1573-c.1638): the interrelation of Venetian art and anatomy, and his importance in England
No full textBolognese artist Odoardo Fialetti (1573 – c.1638) is a fascinating figure upon which curiously little work has been done. Though he is a rarely discussed pupil of Tintoretto, Fialetti’s oeuvre is vast (some 55 known paintings and approximately 450 prints) and incredibly diverse. His work encompasses religious subjects, portraits, books on drawing and sport, maps, and illustration for treatises on city defences, literary texts, and anatomy. His work was influential for several hundred years after his death, not only in Venice and northern Italy, but also in France where his designs were used as decoration on faïence produced at Nevers, and England, where his paintings were much admired at court. Fialetti’s close association with Sir Henry Wotton, and the careful copy of his drawing book made by Alexander Browne in the mid-seventeenth century, attest to his impact on the formation of an Italianate sensibility in the appreciation of the visual arts in Early Modern England. In the realm of science, Fialetti’s influence can be deduced from his drawings of curiously animated cadavers in detailed landscapes to those of future generations of anatomists and illustrators throughout Europe. Because of the diverse associations and projects throughout his career, the study of Fialetti is inherently interdisciplinary, encompassing the history of art, history of science and history of the Venetian book trade, as well as crossing geographical boundaries in linking Venetian art and English tastes of the late renaissance and early baroque. Through examination of his extant oeuvre, as well as discussion of lost work, I aim to recognise Fialetti’s status as an artist responding to contemporary artistic debates (disegno versus colorito), a changing cultural climate and the burgeoning importance of the printed medium
Fundamental group and twisted Alexander polynomial of link complement in 3-torus
No full textWe consider a diagrammatic approach to investigate tame knots and links in
three dimensional torus . We obtain a finite set of generalised
Reidemeister moves for equivalent links up to ambient isotopy. We give a
presentation for fundamental group of link complement in 3-torus and the
first homology group. We also compute Alexander polynomial and twisted
Alexander polynomials of this class of links.Comment: 21 pages. arXiv admin note: text overlap with arXiv:1209.6532,
arXiv:1606.03224 by other author
"I'm a Frog, You're a Frog, Kiss Me": A Commentary on Brayton and Alexander (2007)
No full textThe author reflects on an article which was written by S. Brayton and T. Alexander about Québec, Canada. The way in which a frog, a logo from a local basketball team, was used as a metaphor is discussed. The author's opinions regarding Alexander and Brayton's use of the frog in the article are mentioned
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