25,109 results on '"Hess P"'
Search Results
352. Bevacizumab and gamma knife radiosurgery for first-recurrence glioblastoma
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Zhang, Jeff F., Okai, Bernard, Iovoli, Austin, Goulenko, Victor, Attwood, Kristopher, Lim, Jaims, Hess, Ryan M., Abad, Ajay P., Prasad, Dheerendra, and Fenstermaker, Robert A.
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- 2024
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353. Fully automatic algorithm for detecting and tracking anatomical shoulder landmarks on fluoroscopy images with artificial intelligence
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Croci, Eleonora, Hess, Hanspeter, Warmuth, Fabian, Künzler, Marina, Börlin, Sean, Baumgartner, Daniel, Müller, Andreas Marc, Gerber, Kate, and Mündermann, Annegret
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- 2024
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354. Building trust and transparency in biomedical sciences through data walks
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Fattah, Layla, Johnson, Jay, Clark, Uraina, Hess, Leona, Palermo, Ann-Gel, Figueroa Acosta, Dania M., and Swartz, Talia H.
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- 2024
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355. Evaluating the Consequential Validity of the Research-Based Early Mathematics Assessment
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Dong, Yixiao, Dumas, Denis, Clements, Douglas H., Day-Hess, Crystal A., and Sarama, Julie
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Consequential validity (often referred to as "test fairness" in practice) is an essential aspect of educational measurement. This study evaluated the consequential validity of the Research-Based Early Mathematics Assessment (REMA). A sample of 627 children from PreK to second grade was collected using the short form of the REMA. We conducted two sets of analyses with different foci (item- or scale-level) for validation: differential item functioning (DIF) and consequential validity ratio (CVR) analyses. The analyses focused on the demographic subgroups of gender, English Language Learner status, and race/ethnicity. We found a low percentage of DIF items (less than 3%) and high CVRs (ranging from 96 to 98%). Both findings support the consequential validity and thus "fairness" of the REMA.
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- 2023
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356. Rethinking the Large Ensemble Paradigm: Moving toward Epistemic Justice
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Hess, Juliet
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In this paper, I center the epistemic dimensions of musics and musicking to consider the ways in which the band/orchestra/choir paradigm of music education prevalent in the U.S. and Canada may be implicated in epistemic injustice. Drawing in particular on the work of Fricker (Epistemic injustice: power and the ethics of knowing, Oxford University Press, New York, 2007), Dotson (Hypatia 26(2):236-257, 2011), and "The Routledge Handbook of Epistemic Injustice" (Kidd et al., The Routledge handbook of epistemic injustice, Routledge, New York, 2017), I explore facets of epistemic injustice and apply these ideas to music education school contexts in Canada and the U.S. I further explore aspects of school music that may amount to "testimonial smothering" (Dotson 2011) and "cognitive imperialism" (Battiste in Can J Native Educ 22:16-27, 1998). Ultimately, building on existing literature on epistemic justice (Kidd et al. 2017; Fricker 2007), I theorize an epistemically just music education for school music in alignment with culturally responsive, anti-racist, and anti-colonial teaching.
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- 2023
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357. Virtually the Same? Evaluating the Effectiveness of Remote Undergraduate Research Experiences
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Hess, Riley A., Erickson, Olivia A., Cole, Rebecca B., Isaacs, Jared M., Alvarez-Clare, Silvia, Arnold, Jonathan, Augustus-Wallace, Allison, Ayoob, Joseph C., Berkowitz, Alan, Branchaw, Janet, Burgio, Kevin R., Cannon, Charles H., Ceballos, Ruben Michael, Cohen, C. Sarah, Coller, Hilary, Disney, Jane, Doze, Van A., Eggers, Margaret J., Ferguson, Edwin L., Gray, Jeffrey J., Greenberg, Jean T., Hoffmann, Alexander, Jensen-Ryan, Danielle, Kao, Robert M., Keene, Alex C., Kowalko, Johanna E., Lopez, Steven A., Mathis, Camille, Minkara, Mona, Murren, Courtney J., Ondrechen, Mary Jo, Ordoñez, Patricia, Osano, Anne, Padilla-Crespo, Elizabeth, Palchoudhury, Soubantika, Qin, Hong, Ramírez-Lugo, Juan, Reithel, Jennifer, Shaw, Colin A., Smith, Amber, Smith, Rosemary J., Tsien, Fern, and Dolan, Erin L.
- Abstract
In-person undergraduate research experiences (UREs) promote students' integration into careers in life science research. In 2020, the COVID-19 pandemic prompted institutions hosting summer URE programs to offer them remotely, raising questions about whether undergraduates who participate in remote research can experience scientific integration and whether they might perceive doing research less favorably (i.e., not beneficial or too costly). To address these questions, we examined indicators of scientific integration and perceptions of the benefits and costs of doing research among students who participated in remote life science URE programs in Summer 2020. We found that students experienced gains in scientific self-efficacy pre- to post-URE, similar to results reported for in-person UREs. We also found that students experienced gains in scientific identity, graduate and career intentions, and perceptions of the benefits of doing research only if they started their remote UREs at lower levels on these variables. Collectively, students did not change in their perceptions of the costs of doing research despite the challenges of working remotely. Yet students who started with low cost perceptions increased in these perceptions. These findings indicate that remote UREs can support students' self-efficacy development, but may otherwise be limited in their potential to promote scientific integration.
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- 2023
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358. The Great School Rethink
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Hess, Frederick M. and Hess, Frederick M.
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In "The Great School Rethink," education policy sentinel Frederick M. Hess offers a pithy and perceptive appraisal of American schooling and finds, in the uncertain period following pandemic disruption, an ideal moment to reimagine US education. Now is the time, he asserts, to ask hard questions about how schools use time and talent, how they work with parents, what they do with digital tools, and how they meet the needs of their communities. As Hess explains, to rethink is to acknowledge the realities of the education system while opening one's mind to possibility. With characteristic verve and wit, Hess guides readers through his rethink process, a versatile and easily implemented approach to identifying issues and brainstorming possible responses. He encourages readers to explore what improvements might alleviate current pressures and frustrations, such as teacher shortages and burnout, declining student performance, and compromised learning time. Whether their goal is to achieve better student engagement, increase parent involvement, or implement personalized learning, readers will develop the mindset to ask the right questions, to fully understand the problem that's being solved, and to evaluate the probable effectiveness of proposed solutions. Brimming with challenging questions, robust exercises, and eye-opening data, this book is a must-read for education professionals, parent advocates, and anyone passionate about the future of American education.
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- 2023
359. Time Dimension Influences Severity of Stroke and Heightened Immune Response in Mice
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Kamat, Pradip K., Khan, Mohammad Badruzzaman, Siddiqui, Shahneela, Williams, Dylan, da Silva Lopes Salles, Evila, Naeini, Sahar Emami, Arbab, Ali S., Rudic, Daniel R., Baban, Babak, Dhandapani, Krishnan M., and Hess, David C.
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- 2023
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360. Deutsches NATURA-2000-Schutzgebietsregime erneut auf EuGH-Prüfstand
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Heß, Franziska and Wulff, Justus
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- 2023
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361. Multimodal spatiotemporal phenotyping of human retinal organoid development
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Wahle, Philipp, Brancati, Giovanna, Harmel, Christoph, He, Zhisong, Gut, Gabriele, del Castillo, Jacobo Sarabia, Xavier da Silveira dos Santos, Aline, Yu, Qianhui, Noser, Pascal, Fleck, Jonas Simon, Gjeta, Bruno, Pavlinić, Dinko, Picelli, Simone, Hess, Max, Schmidt, Gregor W., Lummen, Tom T. A., Hou, Yanyan, Galliker, Patricia, Goldblum, David, Balogh, Marton, Cowan, Cameron S., Scholl, Hendrik P. N., Roska, Botond, Renner, Magdalena, Pelkmans, Lucas, Treutlein, Barbara, and Camp, J. Gray
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- 2023
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362. Soil microbiome indicators can predict crop growth response to large-scale inoculation with arbuscular mycorrhizal fungi
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Lutz, Stefanie, Bodenhausen, Natacha, Hess, Julia, Valzano-Held, Alain, Waelchli, Jan, Deslandes-Hérold, Gabriel, Schlaeppi, Klaus, and van der Heijden, Marcel G. A.
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- 2023
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363. Geometric Collective Model of Atomic Nuclei: Finite Element Method Implementations
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Gusev, A. A., Chuluunbaatar, G., Vinitsky, S. I., Pogosyan, G. S., Deveikis, A., Hess, P. O., and Hai, L. L.
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- 2023
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364. The immunometabolic ecosystem in cancer
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Bantug, Glenn R. and Hess, Christoph
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- 2023
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365. Testing and Analysis on the Dynamic Loosening of Jack Bolt Nuts Compared with Heavy Hex Nuts
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Hess, D. P.
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- 2023
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366. Victoria Moul, A Literary History of Latin & English Poetry: Bilingual Verse Culture in Early Modern England, Cambridge: Cambridge University Press, 2022, pp. 586, ISBN 9781107192713, £110
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Hess, Nathaniel
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- 2023
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367. Role of ErbB and IL-1 signaling pathways in the dermonecrotic lesion induced by Loxosceles sphingomyelinases D
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Pinto, Bruna Fernandes, Lopes, Priscila Hess, Trufen, Carlos Eduardo Madureira, Ching, Ana Tung Ching, De Azevedo, Inácio de Loiola Meirelles Junqueira, Nishiyama, Jr, Milton Yutaka, Pohl, Paula Cristiane, and Tambourgi, Denise V.
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- 2023
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368. Consensus for voice quality assessment in clinical practice: guidelines of the European Laryngological Society and Union of the European Phoniatricians
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Lechien, Jerome R., Geneid, Ahmed, Bohlender, Jörg E., Cantarella, Giovanna, Avellaneda, Juan C., Desuter, Gauthier, Sjogren, Elisabeth V., Finck, Camille, Hans, Stephane, Hess, Markus, Oguz, Haldun, Remacle, Marc J., Schneider-Stickler, Berit, Tedla, Miroslav, Schindler, Antonio, Vilaseca, Isabel, Zabrodsky, Michal, Dikkers, Frederik G., and Crevier-Buchman, Lise
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- 2023
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369. Pilot Evaluation of the Online ‘Chaplains-CARE’ Program: Enhancing Skills for United States Military Suicide Intervention Practices and Care
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Lee-Tauler, Su Yeon, Grammer, Joseph, LaCroix, Jessica M., Walsh, Adam K., Clark, Sandra Elizabeth, Holloway, Kathryn J., Sundararaman, Ramya, Carter, Chaplain K. Madison, Crouterfield, Chaplain Bruce, Hazlett, Chaplain Gregory R., Hess, Chaplain Robert M., Miyahara, Chaplain John M., Varsogea, Chaplain Charles E., Whalen, Chaplain Christilene, and Ghahramanlou-Holloway, Marjan
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- 2023
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370. Künstliche Intelligenz zur Entscheidungsunterstützung in Leitstellen des Personennahverkehrs – Technische und sozio-technische Herausforderungen
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Kopp, Tobias, Weitemeyer, Robin, Beyer, Jens, Ziegler, Dominic, and Hess, Roxana
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- 2023
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371. Ocrelizumab-assoziierte schwere Neutropenie: eine unterschätzte Komplikation der Therapie mit CD20-Antikörpern bei Multipler Sklerose?
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Hess, Felix, Uibel, Paula, Berthele, Achim, and Hemmer, Bernhard
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- 2023
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372. Metabolic pathway-based subtypes associate glycan biosynthesis and treatment response in head and neck cancer
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Benedek Dankó, Julia Hess, Kristian Unger, Daniel Samaga, Christoph Walz, Axel Walch, Na Sun, Philipp Baumeister, Peter Y. F. Zeng, Franziska Walter, Sebastian Marschner, Richard Späth, Olivier Gires, Timm Herkommer, Ramin Dazeh, Thaina Matos, Lisa Kreutzer, Johann Matschke, Katharina Eul, Frederick Klauschen, Ulrike Pflugradt, Martin Canis, Ute Ganswindt, Joe S. Mymryk, Barbara Wollenberg, Anthony C. Nichols, Claus Belka, Horst Zitzelsberger, Kirsten Lauber, and Martin Selmansberger
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Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Head and Neck Squamous Cell Carcinoma (HNSCC) is a heterogeneous malignancy that remains a significant challenge in clinical management due to frequent treatment failures and pronounced therapy resistance. While metabolic dysregulation appears to be a critical factor in this scenario, comprehensive analyses of the metabolic HNSCC landscape and its impact on clinical outcomes are lacking. This study utilized transcriptomic data from four independent clinical cohorts to investigate metabolic heterogeneity in HNSCC and define metabolic pathway-based subtypes (MPS). In HPV-negative HNSCCs, MPS1 and MPS2 were identified, while MPS3 was enriched in HPV-positive cases. MPS classification was associated with clinical outcome post adjuvant radio(chemo)therapy, with MPS1 consistently exhibiting the highest risk of therapeutic failure. MPS1 was uniquely characterized by upregulation of glycan (particularly chondroitin/dermatan sulfate) metabolism genes. Immunohistochemistry and pilot mass spectrometry imaging analyses confirmed this at metabolite level. The histological context and single-cell RNA sequencing data identified the malignant cells as key contributors. Globally, MPS1 was distinguished by a unique transcriptomic landscape associated with increased disease aggressiveness, featuring motifs related to epithelial-mesenchymal transition, immune signaling, cancer stemness, tumor microenvironment assembly, and oncogenic signaling. This translated into a distinct histological appearance marked by extensive extracellular matrix remodeling, abundant spindle-shaped cancer-associated fibroblasts, and intimately intertwined populations of malignant and stromal cells. Proof-of-concept data from orthotopic xenotransplants replicated the MPS phenotypes on the histological and transcriptome levels. In summary, this study introduces a metabolic pathway-based classification of HNSCC, pinpointing glycan metabolism-enriched MPS1 as the most challenging subgroup that necessitates alternative therapeutic strategies.
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- 2024
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373. Effect of sodium‐glucose cotransporter 2 inhibitor canagliflozin on interstitial glucose concentration in insulin‐treated diabetic dogs
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Jessica R. Box, Mark A. Oyama, Ariel S. Mosenco, and Rebecka S. Hess
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canine ,diabetes mellitus ,diabetic ketoacidosis ,fractional excretion ,glycemic control ,hypoglycemia ,Veterinary medicine ,SF600-1100 - Abstract
Abstract Background The utility of sodium‐glucose cotransporter 2 inhibitors (SGLT2i) has not been reported in insulin‐treated diabetic dogs. Hypothesis Canagliflozin, a PO‐administered SGLT2i, decreases interstitial glucose concentration (IG) in insulin‐treated diabetic dogs. Animals Five insulin‐treated diabetic dogs. Methods Uncontrolled open label longitudinal study. Canagliflozin (2‐4 mg/kg/day PO) was added to an unchanged insulin dose for 7 days. Fractional excretion of glucose was calculated by dividing the product of urine glucose and serum creatinine concentrations by the product of serum glucose and urine creatinine concentrations. Hypoglycemia was defined as IG
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- 2024
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374. Anthropogenic forcings reverse a simulated multi-century naturally-forced Northern Hemisphere Hadley cell intensification
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Or Hess and Rei Chemke
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Science - Abstract
Abstract The Hadley circulation plays a central role in determining the location and intensity of the hydrological cycle in tropical and subtropical latitudes. Thus, the human-induced historical and projected weakening of the Northern Hemisphere Hadley circulation has considerable societal impacts. Yet, it is currently unknown how unparalleled this weakening is relative to the response of the circulation to natural forcings in past centuries. Here, using state-of-the-art climate models, we show that in contrast to the recent and future human-induced Hadley circulation weakening, natural forcings acted to intensify the circulation by cooling the climate over the last millennium. The reversal of a naturally-forced multi-centennial trend by human emissions highlights their unprecedented impacts on the atmospheric circulation. Given the amplifying effect of natural forcings on the Hadley circulation, our analysis stresses the importance of adequately incorporating natural forcings in climate model projections to better constrain future tropical climate changes.
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- 2024
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375. Cow milk is an important source of iodine for prenatal health, and switching to plant-based milk can lead to iodine insufficiencies
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Hallie Lundquist, Julie Hess, Madeline Comeau, and Joanne Slavin
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Dairy processing. Dairy products ,SF250.5-275 - Abstract
Iodine insufficiencies are common among many populations, particularly pregnant women. One of the main functions of iodine is making thyroid hormone. The 2 main hormones that iodine influences are triiodothyronine and thyroxine. Thyroid hormone affects metabolism of most tissues. For the average adult, the recommended dietary allowance (RDA) for iodine is 150 µg. During certain stages of life, such as pregnancy, lactation, and infancy, the importance of iodine is even greater as it supports brain, bone, and organ development. The RDA for iodine during pregnancy is 220 µg and, during breastfeeding, the RDA is 290 µg. Consuming enough iodine in the diet during pregnancy helps support fetal neurodevelopment. Iodine is found in several food sources such as seafood and iodized salt; however, dairy products are one of the major sources of iodine in American diets. It is important to note that only bovine milk products are rich in this mineral. One cup of milk provides 39% and 57% of the daily iodine needs for the average adult woman and pregnant woman, respectively. As the Dietary Guidelines for Americans (DGA) recommend limiting sodium intake, which includes iodized salt, dairy may be an especially important source of iodine. However, according to the USDA, about 90% of the US population does not meet the dairy recommendations presented in the DGA. In recent years, plant-based diets have received a lot of attention. A market for plant-based milk alternatives has grown and includes a variety of options such as almond, soy, and oat milk. Plant-based milks do not naturally contain iodine and are typically not fortified with iodine. Women of childbearing age who drink plant-based milks instead of cow milk have lower urinary iodine concentrations than women who consume cow milk. This review will focus on the importance of iodine in the diet to support prenatal health, lactation, and infant health.
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- 2024
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376. Ultrafast photoluminescence and multiscale light amplification in nanoplasmonic cavity glass
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Piotr Piotrowski, Marta Buza, Rafał Nowaczyński, Nuttawut Kongsuwan, Hańcza B. Surma, Paweł Osewski, Marcin Gajc, Adam Strzep, Witold Ryba-Romanowski, Ortwin Hess, and Dorota A. Pawlak
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Science - Abstract
Abstract Interactions between plasmons and exciton nanoemitters in plexcitonic systems lead to fast and intense luminescence, desirable in optoelectonic devices, ultrafast optical switches and quantum information science. While luminescence enhancement through exciton-plasmon coupling has thus far been mostly demonstrated in micro- and nanoscale structures, analogous demonstrations in bulk materials have been largely neglected. Here we present a bulk nanocomposite glass doped with cadmium telluride quantum dots (CdTe QDs) and silver nanoparticles, nAg, which act as exciton and plasmon sources, respectively. This glass exhibits ultranarrow, FWHM = 13 nm, and ultrafast, 90 ps, amplified photoluminescence (PL), λem≅503 nm, at room temperature under continuous-wave excitation, λexc = 405 nm. Numerical simulations confirm that the observed improvement in emission is a result of a multiscale light enhancement owing to the ensemble of QD-populated plasmonic nanocavities in the material. Power-dependent measurements indicate that >100 mW coherent light amplification occurs. These types of bulk plasmon-exciton composites could be designed comprising a plethora of components/functionalities, including emitters (QDs, rare earth and transition metal ions) and nanoplasmonic elements (Ag/Au/TCO, spherical/anisotropic/miscellaneous), to achieve targeted applications.
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- 2024
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377. Real-world evidence of treatment patterns and survival of metastatic gastric cancer patients in Germany
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Jaime Luna, Nils Picker, Thomas Wilke, Magnus Lutz, Jürgen Hess, Bernhard Mörtl, Yan Xiong, and Thorsten Oliver Götze
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Metastatic Gastric Cancer ,Real-world evidence ,Cohort ,Treatment ,Survival ,Germany ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background Patients with metastatic gastric cancer (mGC) have poor prognosis. This real-world study aimed to describe treatment regimens and survival of mGC patients. Methods A retrospective analysis was conducted using anonymized German claims data (AOK PLUS) covering a period from 2010 to 2021. The study population included newly diagnosed mGC cases identified from 2011 to 2020. The index date was defined as the first diagnosis of metastasis on or after gastric cancer diagnosis. Therapy regimens were identified based on inpatient and outpatient data, and subsequently stratified by line of treatment. Survival analyses were conducted using the Kaplan–Meier method. Results The cohort consisted of 5,278 mGC incident cases (mean age: 72.7 years; male: 61.9%). Nearly half of the incident cases received mGC-related treatment (49.8%). Treated patients were more often male, younger, and had fewer comorbidities compared to untreated patients. Of the 2,629 mGC patients who started the first line of treatment (1LOT), 32.8% switched to 2LOT, and 10.2% reached 3LOT. Longer survival time was observed among disease-specific treated cases compared with untreated cases (median real-world overall survival (rwOS): 12.7 months [95%CI 12.1 – 13.3 months] vs. 3.7 months [95%CI 3.4 – 4.0 months]). Conclusion Systemic therapy was not received in almost half of the mGC patients. In those patients, a very short median rwOS was observed. Treatment patterns were generally in line with the guideline recommendations, however, therapy switching rates and poor prognosis indicate high unmet needs also in the treated population.
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- 2024
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378. Association between general self-efficacy and health literacy among stroke survivors 1-year post-discharge: a cross-sectional study
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Andrea Hess Engström, Maria Flink, Sebastian Lindblom, Lena von Koch, and Charlotte Ytterberg
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Medicine ,Science - Abstract
Abstract Stroke may affect physical functioning, cognition, and mental and social aspects of one’s life. Health literacy and self-efficacy are associated with positive health outcomes and are important factors for managing the diverse consequences of a stroke. However, there is very little literature on the association between health literacy and self-efficacy. This study aimed to investigate the association between health literacy and self-efficacy among stroke survivors 1 year after discharge from hospital. Participants in this cross-sectional study were patients diagnosed with a stroke, mainly a mild stroke, who were referred to rehabilitation in primary care after discharge from hospital in Sweden. Data was collected using questionnaires, performance-based tests, and medical records. Ordinal logistic regression was used to analyze the association between general self-efficacy and health literacy in adjusted models. The analysis revealed that higher levels of general self-efficacy and higher levels of performing activities of daily living were associated with higher levels of health literacy. Stroke survivors with higher general self-efficacy also report higher health literacy 1-year post-discharge from hospital. Future studies should focus on the pathways by which health literacy and general self-efficacy work among stroke survivors and in populations with low health literacy, severe stroke or significant cognitive impairments.
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- 2024
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379. Development of a requirement for exogenous insulin treatment in dogs with hyperglycemia
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Angielee DiNinni and Rebecka S. Hess
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canine ,diabetes mellitus ,diabetic ,glucocorticoids ,hyperadrenocorticism ,steroids ,Veterinary medicine ,SF600-1100 - Abstract
Abstract Background It has been suggested that overt diabetes mellitus in dogs be defined based on a persistent fasting blood glucose concentration (BGC) >144 mg/dL. Objective Determine the number of dogs with randomly identified hyperglycemia without insulin‐treated diabetes mellitus (ITDM) that later develop a need for exogenous insulin treatment. Animals A total of 1318 dogs examined at a university teaching hospital without ITDM and with randomly identified hyperglycemia. Methods Retrospective longitudinal study. Hyperglycemia was defined as randomly identified BGC above >112 mg/dL, moderate hyperglycemia as BGC >144 mg/dL but
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- 2024
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380. Protein NirP1 regulates nitrite reductase and nitrite excretion in cyanobacteria
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Alexander Kraus, Philipp Spät, Stefan Timm, Amy Wilson, Rhena Schumann, Martin Hagemann, Boris Maček, and Wolfgang R. Hess
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Science - Abstract
Abstract When the supply of inorganic carbon is limiting, photosynthetic cyanobacteria excrete nitrite, a toxic intermediate in the ammonia assimilation pathway from nitrate. It has been hypothesized that the excreted nitrite represents excess nitrogen that cannot be further assimilated due to the missing carbon, but the underlying molecular mechanisms are unclear. Here, we identified a protein that interacts with nitrite reductase, regulates nitrogen metabolism and promotes nitrite excretion. The protein, which we named NirP1, is encoded by an unannotated gene that is upregulated under low carbon conditions and controlled by transcription factor NtcA, a central regulator of nitrogen homeostasis. Ectopic overexpression of nirP1 in Synechocystis sp. PCC 6803 resulted in a chlorotic phenotype, delayed growth, severe changes in amino acid pools, and nitrite excretion. Coimmunoprecipitation experiments indicated that NirP1 interacts with nitrite reductase, a central enzyme in the assimilation of ammonia from nitrate/nitrite. Our results reveal that NirP1 is widely conserved in cyanobacteria and plays a crucial role in the coordination of C/N primary metabolism by targeting nitrite reductase.
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- 2024
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381. Co-Infection of Chickens with Staphylococcus lentus and Staphylococcus aureus from an Outbreak of Arthritis, Synovitis, and Osteomyelitis Argues for Detailed Characterisation of Isolates
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Miguel Matos, Peter Mitsch, Dieter Liebhart, Michael Hess, and Claudia Hess
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organic broiler breeder flock ,antibiotic resistance ,MALDI-TOF MS ,joint inflammation ,co-infection ,bacterial characterisation ,Veterinary medicine ,SF600-1100 ,Zoology ,QL1-991 - Abstract
Staphylococcus species are widespread in poultry environments and can cause various infections, often when the host’s defences are compromised. This manuscript reports on a co-infection of chickens with Staphylococcus lentus and Staphylococcus aureus associated with an outbreak of arthritis, synovitis, and osteomyelitis in an organic broiler breeder flock in Austria. Clinically, the affected flock showed weakness, lethargy, lameness, and increased mortality. Post-mortem examinations identified purulent arthritis and femoral head necrosis. Bacteriological analysis using MALDI-TOF MS identified both S. aureus and S. lentus in the affected joints. Antibiotic resistance testing revealed significant resistance, particularly in S. lentus. Histological analysis showed severe inflammation and bacterial colonies in the joints. While S. aureus is a common pathogen in poultry, S. lentus is less frequently reported. This study emphasises the need for detailed bacterial characterisation in outbreaks to better understand the role of less common pathogens like S. lentus. Further research is necessary to elucidate the impact of S. lentus on poultry health and its role in causing arthritis and synovitis, highlighting the importance of comprehensive investigation in such outbreaks.
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- 2024
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382. Asymmetry of wetting and de-wetting on high-friction surfaces originates from the same molecular physics
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Pellegrino, Michele and Hess, Berk
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Physics - Fluid Dynamics ,Physics - Computational Physics - Abstract
The motion of three-phase contact lines is one of the most relevant research topics of micro- and nano-fluidics. According to many hydrodynamic and molecular models, the dynamics of contact lines is assumed overdamped and dominated by localised liquid-solid friction, entailing the existence of a mobility relation between contact line speed and microscopic contact angle. We present and discuss a set of non-equilibrium atomistic Molecular Dynamics simulations of water nanodroplets spreading on or confined between silica-like walls, showing the existence of the aforementioned relation and its invariance under wetting modes (`spontaneous' or `forced'). Upon changing the wettability of the walls, it has been noticed that more hydrophilic substrates are easier to wet rather than de-wet; we show how this asymmetry can be automatically captured by a contact line friction model that accounts for the molecular transport between liquid layers. A simple examination of the order and orientation of near-contact-line water molecules corroborates the physical foundation of the model. Lastly, we propose an approach to discriminate between contact line friction models which overcomes the limitations of experimental resolution. This work constitutes a stepping stone towards demystifying wetting dynamics on high-friction hydrophilic substrates and underlines the relevance of contact line friction in modelling the motion of three-phase contact lines., Comment: 11 pages (double column), 11 figures, submitted to Physics of Fluids
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- 2022
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383. Physically Constrained Generative Adversarial Networks for Improving Precipitation Fields from Earth System Models
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Hess, Philipp, Drüke, Markus, Petri, Stefan, Strnad, Felix M., and Boers, Niklas
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Physics - Atmospheric and Oceanic Physics ,Computer Science - Machine Learning - Abstract
Precipitation results from complex processes across many scales, making its accurate simulation in Earth system models (ESMs) challenging. Existing post-processing methods can improve ESM simulations locally, but cannot correct errors in modelled spatial patterns. Here we propose a framework based on physically constrained generative adversarial networks (GANs) to improve local distributions and spatial structure simultaneously. We apply our approach to the computationally efficient ESM CM2Mc-LPJmL. Our method outperforms existing ones in correcting local distributions, and leads to strongly improved spatial patterns especially regarding the intermittency of daily precipitation. Notably, a double-peaked Intertropical Convergence Zone, a common problem in ESMs, is removed. Enforcing a physical constraint to preserve global precipitation sums, the GAN can generalize to future climate scenarios unseen during training. Feature attribution shows that the GAN identifies regions where the ESM exhibits strong biases. Our method constitutes a general framework for correcting ESM variables and enables realistic simulations at a fraction of the computational costs.
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- 2022
384. Application of the cranking method to the semimicroscopic algebraic cluster model and nuclear molecules
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Lohr-Robles, David Stefan, Morales-Hernández, Giovani Erick, Lopez-Moreno, Enrique, and Hess, Peter Otto
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Nuclear Theory - Abstract
A particular quantum phase transition (QPT) is studied at excited energies of light nuclei within the Semimicroscopic Algebraic Cluster Model (SACM), using a combination of catastrophe theory and a direct minimization of the potential. A distinct change from a compact nucleus to a nuclear molecule is described as a second order QPT occurring at a certain value of angular momentum. This finding is in accordance with experimental observations when nuclear molecules appear. The method has implication in the fission of heavy nuclei., Comment: 25 pages, 8 figures, 3 tables
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- 2022
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385. Internal heating mechanisms in neutron stars
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Köpp, F., Horvath, J. E., Hadjimichef, D., Vasconcellos, C. A. Z., and Hess, P. O.
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Astrophysics - High Energy Astrophysical Phenomena - Abstract
The cooling of neutron stars (hereafter NS) has the potential to reveal important features of superdense matter. Their surface temperatures are known for a fair sample of NS with ages $\leq 10^{6} \, {\it{yr}}$, and with a few exceptions, can be accommodated by standard cooling mechanisms (neutrino+photon emission without internal heating). However, for the older objects it is necessary to consider some internal heating to explain surface temperatures higher than expected. We revisit in this paper the kinetic heating by fermionic dark matter, rotochemical heating and magnetic field decay. We found that NS slightly older than $\sim 10^{6} \, {\it{yr}}$ can be explained by them, but the older ``black widow'' systems are much hotter than the values predicted by these three mechanisms, pointing towards a yet unknown heating factor for old NS., Comment: Accepted for publication in IJMPD, 25 pages, 10 figures, 3 tables
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- 2022
- Full Text
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386. First release of Apertif imaging survey data
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Adams, Elizabeth A. K., Adebahr, B., de Blok, W. J. G., Denes, H., Hess, K. M., van der Hulst, J. M., Kutkin, A., Lucero, D. M., Morganti, R., Moss, V. A., Oosterloo, T. A., Orru, E., Schulz, R., van Amesfoort, A. S., Berger, A., Boersma, O. M., Bouwhuis, M., Brink, R. van den, van Cappellen, W. A., Connor, L., Coolen, A. H. W. M., Damstra, S., van Diepen, G. N. J., Dijkema, T. J., Ebbendorf, N., Grange, Y. G., de Goei, R., Gunst, A. W., Holties, H. A., Hut, B., Ivashina, M. V., Jozsa, G. I. G., Loose, G. M., van Leeuwen, J., Maan, Y., Mancini, M., Mika, A., Mulder, H., Norden, M. J., Offringa, A. R., Oostrum, L. C., Pastor-Marazuela, I., Pisano, D. J., Ponomareva, A. A., Romein, J. W., Ruiter, M, Schoenmakers, A. P., van der Schuur, D., Sluman, J. J., Smits, R., Stuurwold, K. J. C, Verstappen, J., Vilchez, N. P. E, Vohl, D., Wierenga, K. J., Wijnholds, S. J., Woestenburg, E. E. M., Zanting, A. W., and Ziemke, J.
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Astrophysics - Instrumentation and Methods for Astrophysics ,Astrophysics - Astrophysics of Galaxies - Abstract
(Abridged) Apertif is a phased-array feed system for WSRT, providing forty instantaneous beams over 300 MHz of bandwidth. A dedicated survey program started on 1 July 2019, with the last observations taken on 28 February 2022. We describe the release of data products from the first year of survey operations, through 30 June 2020. We focus on defining quality control metrics for the processed data products. The Apertif imaging pipeline, Apercal, automatically produces non-primary beam corrected continuum images, polarization images and cubes, and uncleaned spectral line and dirty beam cubes for each beam of an Apertif imaging observation. For this release, processed data products are considered on a beam-by-beam basis within an observation. We validate the continuum images by using metrics that identify deviations from Gaussian noise in the residual images. If the continuum image passes validation, we release all processed data products for a given beam. We apply further validation to the polarization and line data products. We release all raw observational data from the first year of survey observations, for a total of 221 observations of 160 independent target fields, covering approximately one thousand square degrees of sky. Images and cubes are released on a per beam basis, and 3374 beams are released. The median noise in the continuum images is 41.4 uJy/bm, with a slightly lower median noise of 36.9 uJy/bm in the Stokes V polarization image. The median angular resolution is 11.6"/sin(Dec). The median noise for all line cubes, with a spectral resolution of 36.6 kHz, is 1.6 mJy/bm, corresponding to a 3-sigma HI column density sensitivity of 1.8 x 10^20 atoms cm^-2 over 20 km/s (for a median angular resolution of 24" x 15"). We also provide primary beam images for each individual Apertif compound beam. The data are made accessible using a Virtual Observatory interface., Comment: Accepted for publication in A&A, updated Figure 1
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- 2022
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387. Continuum source catalog for the first APERTIF data release
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Kutkin, A. M., Oosterloo, T. A., Morganti, R., Adams, E. A. K., Mancini, M., Adebahr, B., de Blok, W. J. G., Dénes, H., Hess, K. M., van der Hulst, J. M., Lucero, D. M., Moss, V. A., Berger, A., Brink, R. van den, van Cappellen, W. A., Connor, L., Damstra, S., Loose, G. M., van Leeuwen, J., Maan, Y., Mika, A'., Norden, M. J., Offringa, A. R., Oostrum, L. C., van der Schuur, D., Vohl, D., Wijnholds, S. J., and Ziemke, J.
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Astrophysics - Instrumentation and Methods for Astrophysics ,Astrophysics - Astrophysics of Galaxies - Abstract
The first data release of Apertif survey contains 3074 radio continuum images covering a thousand square degrees of the sky. The observations were performed during August 2019 to July 2020. The continuum images were produced at a central frequency 1355 MHz with the bandwidth of $\sim$150 MHz and angular resolution reaching 10". In this work we introduce and apply a new method to obtain a primary beam model using a machine learning approach, Gaussian process regression. The primary beam models obtained with this method are published along with the data products for the first Apertif data release. We apply the method to the continuum images, mosaic them and extract the source catalog. The catalog contains 249672 radio sources many of which are detected for the first time at these frequencies. We cross-match the coordinates with the NVSS, LOFAR/DR1/value-added and LOFAR/DR2 catalogs resulting in 44523, 22825 and 152824 common sources respectively. The first sample provides a unique opportunity to detect long term transient sources which have significantly changed their flux density for the last 25 years. The second and the third ones combined together provide information about spectral properties of the sources as well as the redshift estimates., Comment: 12 pages, 9 figures; accepted for publication in A&A
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- 2022
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388. Developing a New Generation of Integrated Micro-Spec Far Infrared Spectrometers for the EXperiment for Cryogenic Large-Aperture Intensity Mapping (EXCLAIM)
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Volpert, Carolyn G., Barrentine, Emily M., Mirzaei, Mona, Barlis, Alyssa, Bolatto, Alberto D., Bulcha, Berhanu, Cataldo, Giuseppe, Connors, Jake A., Costen, Nicholas, Ehsan, Negar, Essinger-Hileman, Thomas, Glenn, Jason, Hays-Wehle, James P., Hess, Larry A., Kogut, Alan J., Moseley, Harvey, Mugge-Durum, Jonas, Noroozian, Omid, Oxholm, Trevor M., Rahmani, Maryam, Stevenson, Thomas, Switzer, Eric R., Watson, Joseph, and Wollack, Edward J.
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Astrophysics - Instrumentation and Methods for Astrophysics ,Astrophysics - Astrophysics of Galaxies ,Physics - Instrumentation and Detectors - Abstract
The current state of far-infrared astronomy drives the need to develop compact, sensitive spectrometers for future space and ground-based instruments. Here we present details of the $\rm \mu$-Spec spectrometers currently in development for the far-infrared balloon mission EXCLAIM. The spectrometers are designed to cover the $\rm 555 - 714\ \mu$m range with a resolution of $\rm R\ =\ \lambda / \Delta\lambda\ =\ 512$ at the $\rm 638\ \mu$m band center. The spectrometer design incorporates a Rowland grating spectrometer implemented in a parallel plate waveguide on a low-loss single-crystal Si chip, employing Nb microstrip planar transmission lines and thin-film Al kinetic inductance detectors (KIDs). The EXCLAIM $\rm \mu$-Spec design is an advancement upon a successful $\rm R = 64\ \mu$-Spec prototype, and can be considered a sub-mm superconducting photonic integrated circuit (PIC) that combines spectral dispersion and detection. The design operates in a single $M{=}2$ grating order, allowing one spectrometer to cover the full EXCLAIM band without requiring a multi-order focal plane. The EXCLAIM instrument will fly six spectrometers, which are fabricated on a single 150 mm diameter Si wafer. Fabrication involves a flip-wafer-bonding process with patterning of the superconducting layers on both sides of the Si dielectric. The spectrometers are designed to operate at 100 mK, and will include 355 Al KID detectors targeting a goal of NEP ${\sim}8\times10^{-19}$ $\rm W/\sqrt{Hz}$. We summarize the design, fabrication, and ongoing development of these $\rm \mu$-Spec spectrometers for EXCLAIM., Comment: 9 pages, 5 figures, to appear in the Proceedings of the SPIE Astronomical Telescopes + Instrumentation (2022)
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- 2022
389. Tangential contacts of three-dimensional power-law graded elastic solids: A general theory and application to partial slip
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Heß, Markus and Li, Qiang
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Condensed Matter - Soft Condensed Matter - Abstract
A rigorous theory for solving tangential contacts between three-dimensional power-law graded elastic solids of arbitrary geometry is presented. For multiple contacts such as those occurring between two nominally flat but rough half-spaces, the well-known Ciavarella-J\"ager theorem is established accompanied by a discussion of tangential coupling. Nevertheless, the focus of the work is on axisymmetric single contacts under arbitrary unidirectional tangential loading, for which closed-form analytical solutions are derived based on the Mossakovskii-J\"ager procedure. In comparison to the results of common approximate methods, the solutions include the non-axisymmetric components of tangential displacements, which are indispensable for the accurate determination of the relative slip components and thus the surface density of frictional energy dissipation in the partial slip regime. Although a simplified approach is used for the calculation of the dissipated energy density, the results in the limiting case of homogeneous material are in excellent agreement with those from a full numerical computation. As an application example, the complete solutions for the tangential contact of parabolically shaped power-law graded elastic solids in the partial slip regime are derived and the influence of the material gradient as well as Poisson's ratio on the surface density of dissipated energy is investigated., Comment: 30 pages, 10 figures
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- 2022
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390. Overview of the remote sensing observations from PSP solar encounter 10 with perihelion at 13.3 Rsun
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Howard, Russell A., Stenborg, Guillermo, Vourlidas, Angelos, Gallagher, Brendan M., Linton, Mark G., Hess, Phillip, Rich, Nathan B., and Liewer, Paulett C.
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Astrophysics - Solar and Stellar Astrophysics ,Astrophysics - Earth and Planetary Astrophysics - Abstract
The closest perihelion pass of Parker Solar Probe (PSP), so far, occurred between 16 and 26 of November 2021 and reached ~13.29 Rsun from Sun center. This pass resulted in very unique observations of the solar corona by the Wide-field Instrument for Solar PRobe (WISPR). WISPR observed at least ten CMEs, some of which were so close that the structures appear distorted. All of the CMEs appeared to have a magnetic flux rope (MFR) structure and most were oriented such that the view was along the axis orientation, revealing very complex interiors. Two CMEs had a small MFR develop in the interior, with a bright circular boundary surrounding a very dark interior. Trailing the larger CMEs were substantial outflows of small blobs and flux-rope like structures within striated ribbons, lasting for many hours. When the heliophysics plasma sheet (HPS) was inclined, as it was during the days around perihelion on November 21, 2021, the outflow was over a very wide latitude range. One CME was overtaken by a faster one, with a resultant compression of the rear of the leading CME and an unusual expansion in the trailing CME. The small Thomson Surface creates brightness variations of structures as they pass through the field of view. In addition to this dynamic activity, a brightness band from excess dust along the orbit of asteroid/comet 3200 Phaethon is also seen for several days., Comment: 28 pages, 15 figures, accepted to ApJ
- Published
- 2022
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391. Deep learning-based identification of sub-nuclear structures in FIB-SEM images
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Gupta, Niraj, Roberts, Eric J., Pang, Song, Xu, C. Shan, Hess, Harald F., Wu, Fan, Dernburg, Abby, Jorgens, Danielle, Zwart, Petrus H., and Kasinath, Vignesh
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Quantitative Biology - Quantitative Methods ,Quantitative Biology - Subcellular Processes - Abstract
Three-dimensional volumetric imaging of cells allows for in situ visualization, thus preserving contextual insights into cellular processes. Despite recent advances in machine learning methods, morphological analysis of sub-nuclear structures have proven challenging due to both the shallow contrast profile and the technical limitation in feature detection. Here, we present a convolutional neural network, supervised deep learning-based approach which can identify sub-nuclear structures with 90% accuracy. We develop and apply this model to C. elegans gonads imaged using focused ion beam milling combined with scanning electron microscopy resulting in the accurate identification and segmentation of all sub-nuclear structures including entire chromosomes. We discuss in depth the architecture, parameterization, and optimization of the deep learning model, as well as provide evaluation metrics to assess the quality of the network prediction. Lastly, we highlight specific aspects of the model that can be optimized for its broad application to other volumetric imaging data as well as in situ cryo-electron tomography., Comment: 15 pages, 10 figures, for eventual peer-reviewed journal publication
- Published
- 2022
392. Two-phonon propagation in a 4-level thermal quantum nanomachine
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Lai, Y., McDwyer, C., Karwat, P., and Hess, O.
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Quantum Physics - Abstract
Acoustic waves, as science of sound, is an established field in physics. In analogy with light, engineers adapt tools from optic fields for manipulating sound waves to fight with cancer cells. Here we present a heat-gradient driven nanomachine concept for simultaneous emission of two phonons, i.e. a convertion of heat into a sonic wave output. Our theoretical work sheds light on nanoscale components or systems that could be used for future ultrasound devices.
- Published
- 2022
393. Tractable Dendritic RNNs for Reconstructing Nonlinear Dynamical Systems
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Brenner, Manuel, Hess, Florian, Mikhaeil, Jonas M., Bereska, Leonard, Monfared, Zahra, Kuo, Po-Chen, and Durstewitz, Daniel
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Computer Science - Machine Learning ,Mathematics - Dynamical Systems ,Nonlinear Sciences - Chaotic Dynamics ,Physics - Computational Physics - Abstract
In many scientific disciplines, we are interested in inferring the nonlinear dynamical system underlying a set of observed time series, a challenging task in the face of chaotic behavior and noise. Previous deep learning approaches toward this goal often suffered from a lack of interpretability and tractability. In particular, the high-dimensional latent spaces often required for a faithful embedding, even when the underlying dynamics lives on a lower-dimensional manifold, can hamper theoretical analysis. Motivated by the emerging principles of dendritic computation, we augment a dynamically interpretable and mathematically tractable piecewise-linear (PL) recurrent neural network (RNN) by a linear spline basis expansion. We show that this approach retains all the theoretically appealing properties of the simple PLRNN, yet boosts its capacity for approximating arbitrary nonlinear dynamical systems in comparatively low dimensions. We employ two frameworks for training the system, one combining back-propagation-through-time (BPTT) with teacher forcing, and another based on fast and scalable variational inference. We show that the dendritically expanded PLRNN achieves better reconstructions with fewer parameters and dimensions on various dynamical systems benchmarks and compares favorably to other methods, while retaining a tractable and interpretable structure., Comment: To be published in the Proceedings of the 39th International Conference on Machine Learning (ICML 2022)
- Published
- 2022
394. Masked Autoencoder for Self-Supervised Pre-training on Lidar Point Clouds
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Hess, Georg, Jaxing, Johan, Svensson, Elias, Hagerman, David, Petersson, Christoffer, and Svensson, Lennart
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Computer Science - Computer Vision and Pattern Recognition ,Computer Science - Machine Learning - Abstract
Masked autoencoding has become a successful pretraining paradigm for Transformer models for text, images, and, recently, point clouds. Raw automotive datasets are suitable candidates for self-supervised pre-training as they generally are cheap to collect compared to annotations for tasks like 3D object detection (OD). However, the development of masked autoencoders for point clouds has focused solely on synthetic and indoor data. Consequently, existing methods have tailored their representations and models toward small and dense point clouds with homogeneous point densities. In this work, we study masked autoencoding for point clouds in an automotive setting, which are sparse and for which the point density can vary drastically among objects in the same scene. To this end, we propose Voxel-MAE, a simple masked autoencoding pre-training scheme designed for voxel representations. We pre-train the backbone of a Transformer-based 3D object detector to reconstruct masked voxels and to distinguish between empty and non-empty voxels. Our method improves the 3D OD performance by 1.75 mAP points and 1.05 NDS on the challenging nuScenes dataset. Further, we show that by pre-training with Voxel-MAE, we require only 40% of the annotated data to outperform a randomly initialized equivalent. Code available at https://github.com/georghess/voxel-mae
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- 2022
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395. Theoretical results for hadronic masses and their widths in the framework of the SO(4) model
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Martinez, Tochtli Yepez, Civitarese, Osvaldo, Hess, Peter, Rico-Trejo, Octavio, and Ramirez-Soto, Ulises
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High Energy Physics - Phenomenology - Abstract
The prediction of properties of the low energy portion of the hadronic spectrum is a challenging task which, up to day, is still tentatively given due to the non-perturbative nature of QCD at low energies. In this paper we are exploring the validity of the SO(4) scheme, as representative of the fundamental QCD structure of meson-like states in the region below 2.5 GeV. We have focussed the attention in the calculation of the energy and width of states of various spin, isospin and parities. The theoretical results are compared, sistematically, to the available experimental information., Comment: 16 pages, 11 figures, 9 tables, 36 references
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- 2022
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396. Seeing the forest and the trees: a radio investigation of the ULIRG Mrk 273
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Kukreti, Pranav, Morganti, Raffaella, Bondi, Marco, Oosterloo, Tom, Tadhunter, Clive, Morabito, Leah K., Adams, E. A. K., Adebahr, B., de Blok, W. J. G., de Gasperin, F., Drabent, A., Hess, K. M., Ivashina, M. V., Kutkin, A., Mika, Á. M., Oostrum, Leon, Shimwell, T. W., van der Hulst, J. M., van Leeuwen, Joeri, van Weeren, R. J., Vohl, Dany, and Ziemke, J.
- Subjects
Astrophysics - Astrophysics of Galaxies - Abstract
Galaxy mergers have been observed to trigger nuclear activity by feeding gas to the central supermassive black hole. One such class of objects are Ultra Luminous InfraRed Galaxies (ULIRGs), which are mostly late stage major mergers of gas-rich galaxies. Recently, large-scale ($\sim$100 kpc) radio continuum emission has been detected in a select number of ULIRGs, all of which also harbour powerful Active Galactic Nuclei (AGN). This hints at the presence of large-scale radio emission being evidence for nuclear activity. Exploring the origin of this radio emission and its link to nuclear activity requires high sensitivity multi-frequency data. We present such an analysis of the ULIRG Mrk 273. Using the International LOFAR telescope (ILT), we detected spectacular large-scale arcs in this system. This detection includes, for the first time, a giant $\sim$190 kpc arc in the north. We propose these arcs are fuelled by a low power radio AGN triggered by the merger. We also identified a bright $\sim$45 kpc radio ridge, which is likely related to the ionised gas nebula in that region. We combined this with high sensitivity data from APERture Tile In Focus (Apertif) and archival data from the Very Large Array (VLA) to explore the spectral properties. The ILT simultaneously allowed us to probe the nucleus at a resolution of $\sim$0.3 arcsec, where we detected three components, and, for the first time, diffuse emission around these components. Combining this with archival high frequency VLA images of the nucleus allowed us to detect absorption in one component, and a steep spectrum radio AGN in another. We then extrapolate from this case study to the importance of investigating the presence of radio emission in more ULIRGs and what it can tell us about the link between mergers and the presence of radio activity., Comment: Accepted for publication in A&A
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- 2022
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397. Experiences of digital physiotherapy during pregnancy and after childbirth: A qualitative study
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Frida Johnson, Sara Frygner Holm, and Andrea Hess Engström
- Subjects
Women's health ,Physiotherapy ,Qualitative research ,Pelvic pain ,Pelvic floor disorder ,Digital health ,Information technology ,T58.5-58.64 ,Psychology ,BF1-990 - Abstract
Background: Pelvic girdle pain, low back pain, and pelvic floor dysfunction can affect women's mobility, quality of life, and well-being during pregnancy and the postpartum period. Digital interventions for treating perinatal depression and lifestyle changes have been studied. Research on digital physiotherapy for musculoskeletal issues related to pregnancy and the postpartum period is sparse. Methods: This qualitative study involved in-depth, semi-structured interviews with 19 participants, of whom six were pregnant and 13 had given birth. Participants were recruited from a private clinic in Sweden through convenience sampling and had received digital physiotherapy prior to the interviews. An interview guide with questions exploring participants' experiences of digital physiotherapy, including its impact on musculoskeletal issues and daily life, and their motivation for seeking digital healthcare was used. Data were analyzed using a qualitative content analysis with an inductive approach. Results: The analysis resulted in two main categories: Finding a new way into physiotherapy treatment and Personalized progress through tailored physiotherapy. These main categories encompassed four generic categories: Convenience and dissatisfaction motivators for digital physiotherapy, A dual experience – appreciated but not always comprehensive, Being involved in the rehabilitation process, and Perceived physical and mental improvements after digital physiotherapy. Conclusion: Digital physiotherapy was well-accepted and perceived as beneficial for managing musculoskeletal symptoms during pregnancy and after childbirth. High accessibility and flexibility were considered advantages. However, inability to undergo a physical assessment was a challenge. Digital physiotherapy may be recommended as a complement to usual care, particularly for women with limited access to a physiotherapist specialized in women's health. Future studies exploring digital physiotherapy's efficacy for musculoskeletal issues during pregnancy and after childbirth are highly recommended.
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- 2024
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- View/download PDF
398. Minimal dose CT for left ventricular ejection fraction and combination with chest-abdomen-pelvis CT
- Author
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Martin Weber Kusk, Søren Hess, Oke Gerke, Lone Deibjerg Kristensen, Christina Stolzenburg Oxlund, Tina Elisabeth Ormstrup, Janus Mølgaard Christiansen, and Shane J. Foley
- Subjects
Four-dimensional computed tomography ,Heart failure ,Systolic ,Radiation exposure ,Ejection fraction ,Cardiac functional imaging ,Medical physics. Medical radiology. Nuclear medicine ,R895-920 - Abstract
Objectives: This prospective study tested the diagnostic accuracy, and absolute agreement with MRI of a low-dose CT protocol for left ventricular ejection fraction (LVEF) measurement. Furthermore we assessed its potential for combining it with Chest-Abdomen-Pelvis CT (CAP-CT) for a one-stop examination. Materials & methods: Eighty-two patients underwent helical low-dose CT. Cardiac magnetic resonance imaging (MRI) was the reference standard. In fifty patients, CAP-CT was performed concurrently, using a modified injection protocol. In these, LVEF was measured with radioisotope cardiography (MUGA). Patients >18 years, without contrast media or MRI contraindications, were included. Bias was measured with Bland-Altman analysis, classification accuracy with Receiver Operating Characteristics, and inter-reader agreement with Intra-Class Correlation Coefficient (ICC). Correlation was examined using Pearson's correlation coefficients. CAP image quality was compared to previous scans with visual grading characteristics. Results: The mean CT dose-length-product (DLP) was 51.8 mGycm, for an estimated effective dose of 1.4 mSv, compared to 5.7 mSv for MUGA. CT LVEF bias was between 2 % and 10 %, overestimating end-diastolic volume. When corrected for bias, sensitivity and specificity of 100 and 98.5 % for classifying reduced LVEF (50 % MRI value) was achieved. ICC for MUGA was significantly lower than MRI and CT. Distinction of renal medulla and cortex was reduced in the CAP scan, but proportion of diagnostic scans was not significantly different from standard protocol. Conclusion: When corrected for inter-modality bias, CT classifies patients with reduced LVEF with high accuracy at a quarter of MUGA dose and can be combined with CAP-CT without loss of diagnostic quality.
- Published
- 2024
- Full Text
- View/download PDF
399. An Updated Review of Hypertrophic Scarring.
- Author
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Mony, Manjula, Harmon, Kelly, Hess, Ryan, Dorafshar, Amir, and Shafikhani, Sasha
- Subjects
animal models ,hypertrophic scar ,keloids ,normal (acute) wound healing ,treatments ,Animals ,Cicatrix ,Hypertrophic ,Wound Healing ,Models ,Animal ,Inflammation ,Extracellular Matrix - Abstract
Hypertrophic scarring (HTS) is an aberrant form of wound healing that is associated with excessive deposition of extracellular matrix and connective tissue at the site of injury. In this review article, we provide an overview of normal (acute) wound healing phases (hemostasis, inflammation, proliferation, and remodeling). We next discuss the dysregulated and/or impaired mechanisms in wound healing phases that are associated with HTS development. We next discuss the animal models of HTS and their limitations, and review the current and emerging treatments of HTS.
- Published
- 2023
400. A Wheeler–DeWitt Non-Commutative Quantum Approach to the Branch-Cut Gravity
- Author
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Bodmann, Benno, Hadjimichef, Dimiter, Hess, Peter Otto, de Freitas Pacheco, José, Weber, Fridolin, Razeira, Moisés, Degrazia, Gervásio Annes, Marzola, Marcelo, and Vasconcellos, César A Zen
- Subjects
Particle and High Energy Physics ,Physical Sciences ,branch-cut cosmology ,Wheeler-DeWitt equation ,non-commutative quantum gravity ,Astronomical sciences ,Particle and high energy physics - Abstract
In this contribution, motivated by the quest to understand cosmic acceleration, based on the theory of Hořava–Lifshitz and on the branch-cut gravitation, we investigate the effects of non-commutativity of a mini-superspace of variables obeying the Poisson algebra on the structure of the branch-cut scale factor and on the acceleration of the Universe. We follow the guiding lines of a previous approach, which we complement to allow a symmetrical treatment of the Poisson algebraic variables and eliminate ambiguities in the ordering of quantum operators. On this line of investigation, we propose a phase-space transformation that generates a super-Hamiltonian, expressed in terms of new variables, which describes the behavior of a Wheeler–DeWitt wave function of the Universe within a non-commutative algebraic quantum gravity formulation. The formal structure of the super-Hamiltonian allows us to identify one of the new variables with a modified branch-cut quantum scale factor, which incorporates, as a result of the imposed variable transformations, in an underlying way, elements of the non-commutative algebra. Due to its structural character, this algebraic structure allows the identification of the other variable as the dual quantum counterpart of the modified branch-cut scale factor, with both quantities scanning reciprocal spaces. Using the iterative Range–Kutta–Fehlberg numerical analysis for solving differential equations, without resorting to computational approximations, we obtained numerical solutions, with the boundary conditions of the wave function of the Universe based on the Bekenstein criterion, which provides an upper limit for entropy. Our results indicate the acceleration of the early Universe in the context of the non-commutative branch-cut gravity formulation. These results have implications when confronted with information theory; so to accommodate gravitational effects close to the Planck scale, a formulation à la Heisenberg’s Generalized Uncertainty Principle in Quantum Mechanics involving the energy and entropy of the primordial Universe is proposed.
- Published
- 2023
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