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François Osiurak, Jordan Navarro, Emanuelle Reynaud
Over the evolution, humans have constantly developed and improved their technologies. This evolution began with the use of physical tools, those tools that increase our sensorimotor abilities (e.g., first stone tools, modern knives, hammers, pencils). Although we still use some of these tools, we also employ in daily life more sophisticated tools for which we do not systematically understand the underlying physical principles (e.g., computers, cars). Current research is also turned toward the development of brain-computer interfaces directly linking our brain activity to machines (i...
2018: Frontiers in Psychology
Nanette L Yragui, Caitlin A Demsky, Leslie B Hammer, Sarah Van Dyck, Moni B Neradilek
Purpose: The present study examined the moderating effects of family-supportive supervisor behaviors (FSSB) on the relationship between two types of workplace aggression (i.e., patient-initiated physical aggression and coworker-initiated psychological aggression) and employee well-being and work outcomes. Methodology: Data were obtained from a field sample of 417 healthcare workers in two psychiatric hospitals. Hypotheses were tested using moderated multiple regression analyses...
April 2017: Journal of Business and Psychology
Robert J Motzer, Nizar M Tannir, David F McDermott, Osvaldo Arén Frontera, Bohuslav Melichar, Toni K Choueiri, Elizabeth R Plimack, Philippe Barthélémy, Camillo Porta, Saby George, Thomas Powles, Frede Donskov, Victoria Neiman, Christian K Kollmannsberger, Pamela Salman, Howard Gurney, Robert Hawkins, Alain Ravaud, Marc-Oliver Grimm, Sergio Bracarda, Carlos H Barrios, Yoshihiko Tomita, Daniel Castellano, Brian I Rini, Allen C Chen, Sabeen Mekan, M Brent McHenry, Megan Wind-Rotolo, Justin Doan, Padmanee Sharma, Hans J Hammers, Bernard Escudier
Background Nivolumab plus ipilimumab produced objective responses in patients with advanced renal-cell carcinoma in a pilot study. This phase 3 trial compared nivolumab plus ipilimumab with sunitinib for previously untreated clear-cell advanced renal-cell carcinoma. Methods We randomly assigned adults in a 1:1 ratio to receive either nivolumab (3 mg per kilogram of body weight) plus ipilimumab (1 mg per kilogram) intravenously every 3 weeks for four doses, followed by nivolumab (3 mg per kilogram) every 2 weeks, or sunitinib (50 mg) orally once daily for 4 weeks (6-week cycle)...
March 21, 2018: New England Journal of Medicine
Pierre H M Pechon, Rhys Pullin, Mark J Eaton, Stephan A Jones, Sam Evans
During uncemented hip arthroplasty the femoral prosthesis can be fitted too tightly into the femoral canal, causing a hoop-stress fracture of the proximal femur. The research undertaken evaluated Acoustic Emission (AE) technology as a potential method of detecting a fracture forming in this manner, in an attempt to assess whether this technology may be used as a means of early warning of impending fracture during surgery. Deer femora were prepared in a manner similar to surgery and uncemented hip arthroplasty broaches were inserted until fracture occurred...
March 21, 2018: Journal of Medical Engineering & Technology
Jan Hammer, Didrik Heggdal, Arne Lillelien, Peggy Lilleby, Roar Fosse
BAKGRUNN: Vestre Viken tilbyr basal eksponeringsterapi til døgnpasienter med alvorlige sammensatte psykiske lidelser og lavt funksjonsnivå. I behandlingen kan de som ønsker det få hjelp til å bli medisinfrie. Det sentrale behandlingselementet er eksponering for uønskede indre opplevelser, betegnet som eksistensiell katastrofeangst. Vi undersøkte pasientenes psykososiale fungering etter minst to år etter avsluttet døgnbehandling. MATERIALE OG METODE: Det var tilgjengelige data for 33 av 36 utskrevne pasienter...
March 19, 2018: Tidsskrift for Den Norske Lægeforening: Tidsskrift for Praktisk Medicin, Ny Række
Joshua P Egan, Devin D Bloom, Chien-Hsien Kuo, Michael P Hammer, Prasert Tongnunui, Samuel P Iglésias, Marcus Sheaves, Chaiwut Grudpan, Andrew M Simons
Biotic and abiotic forces govern the evolution of trophic niches, which profoundly impact ecological and evolutionary processes and aspects of species biology. Herbivory is a particularly interesting trophic niche because there are theorized trade-offs associated with diets comprised of low quality food that might prevent the evolution of herbivory in certain environments. Herbivory has also been identified as a potential evolutionary "dead-end" that hinders subsequent trophic diversification. For this study we investigated trophic niche evolution in Clupeoidei (anchovies, sardines, herrings, and their relatives) and tested the hypotheses that herbivory is negatively correlated with salinity and latitude using a novel, time-calibrated molecular phylogeny, trophic guilds delimited using diet data and cluster analysis, and standard and phylogenetically-informed statistical methods...
March 15, 2018: Molecular Phylogenetics and Evolution
Tiago Falótico, Paulo Henrique M Coutinho, Carolina Q Bueno, Henrique P Rufo, Eduardo B Ottoni
Capuchin monkeys (Sapajus spp.) are proficient tool users, and the use of stone tools occurs in several populations, mostly to crack open encased foods. Two well-studied Brazilian populations of Sapajus libidinosus inhabit Fazenda Boa Vista and Serra da Capivara National Park and present different behavioral sets regarding tool use. Serra das Confusões National Park (SCoNP) lies between those sites, but little is known about the capuchin monkey population that lives there. To begin unraveling the capuchin behavior in this area, we conducted a brief survey for tool use sites...
March 17, 2018: Primates; Journal of Primatology
Celeste Sassi, Michael A Nalls, Perry G Ridge, Jesse R Gibbs, Michelle K Lupton, Claire Troakes, Katie Lunnon, Safa Al-Sarraj, Kristelle S Brown, Christopher Medway, Jenny Lord, James Turton, Jose Bras, Sonja Blumenau, Mareike Thielke, Christa Josties, Dorette Freyer, Annette Dietrich, Monia Hammer, Michael Baier, Ulrich Dirnagl, Kevin Morgan, John F Powell, John S Kauwe, Carlos Cruchaga, Alison M Goate, Andrew B Singleton, Rita Guerreiro, Angela Hodges, John Hardy
Mendelian adult-onset leukodystrophies are a spectrum of rare inherited progressive neurodegenerative disorders affecting the white matter of the central nervous system. Among these, cerebral autosomal dominant and recessive arteriopathy with subcortical infarcts and leukoencephalopathy, cerebroretinal vasculopathy, metachromatic leukodystrophy, hereditary diffuse leukoencephalopathy with spheroids, and vanishing white matter disease present with rapidly progressive dementia as dominant feature and are caused by mutations in NOTCH3, HTRA1, TREX1, ARSA, CSF1R, EIF2B1, EIF2B2, EIF2B3, EIF2B4, and EIF2B5, respectively...
February 2, 2018: Neurobiology of Aging
Sandra Heese, Kerstin Hammer, Mareike Möllers, Helen A Köster, Maria K Falkenberg, Maria Eveslage, Janina Braun, Kathrin Oelmeier de Murcia, Walter Klockenbusch, Ralf Schmitz
OBJECTIVE: To compare the adrenal gland size of fetal growth restricted (FGR) and normal control fetuses. STUDY DESIGN: In this prospective study the adrenal gland size of 63 FGR fetuses and 343 normal controls was measured between 20 and 41 weeks of gestation. The total width and the medulla width were measured in a new standardized transversal plane. The cortex width and a calculated ratio of the total and medulla width (adrenal gland ratio) were compared between both groups...
March 15, 2018: Journal of Perinatal Medicine
Pascal Ferstl, Lutz Hammer, Christopher Sobel, Matthias Gubo, Klaus Heinz, M Alexander Schneider, Florian Mittendorfer, Josef Redinger
This corrects the article DOI: 10.1103/PhysRevLett.117.046101.
February 23, 2018: Physical Review Letters
Aline Vochezer, Tobias Kampschulte, Klemens Hammerer, Philipp Treutlein
We observe effects of collective atomic motion in a one-dimensional optical lattice coupled to an optomechanical system. In this hybrid atom-optomechanical system, the lattice light generates a coupling between the lattice atoms as well as between atoms and a micromechanical membrane oscillator. For large atom numbers we observe an instability in the coupled system, resulting in large-amplitude atom-membrane oscillations. We show that this behavior can be explained by light-mediated collective atomic motion in the lattice, which arises for large atom numbers, small atom-light detunings, and asymmetric pumping of the lattice, in agreement with previous theoretical work...
February 16, 2018: Physical Review Letters
Tessa Camenzind, Edith C Hammer, Johannes Lehmann, Dawit Solomon, Sebastian Horn, Matthias C Rillig, Stefan Hempel
The socio-economic values of fertile and carbon-rich Dark Earth soils are well described from the Amazon region. Very recently, Dark Earth soils were also identified in tropical West Africa, with comparable beneficial soil properties and plant growth-promoting effects. The impact of this management technique on soil microbial communities, however, is less well understood, especially with respect to the ecologically relevant group of arbuscular mycorrhizal (AM) fungi. Thus, we tested the hypotheses that (1) improved soil quality in African Dark Earth (AfDE) will increase soil microbial biomass and shift community composition and (2) concurrently increased nutrient availability will negatively affect AM fungal communities...
April 1, 2018: FEMS Microbiology Ecology
Johann Hammer
OBJECTIVES: The diagnosis of functional dyspepsia (FD) is challenging due to the lack of reliable biological markers to support the diagnosis. We assessed the relevance of a previously validated simple test for chemical hypersensitivity in the setting of a gastrointestinal outpatient department. METHODS: A total of 224 outpatients who were referred for evaluation of gastrointestinal symptoms in the absence of alarm symptoms swallowed a capsule containing 0.75 mg capsaicin...
March 13, 2018: American Journal of Gastroenterology
Sule Keskin, Erkan Yalçin, Hazim Özkaya
The objective of this study was to investigate the effects of storage and granary weevil, Sitophilus granarius (L.; Coleoptera: Curculionidae), infestation on pH, protein solubility (PS) and gel electrophoresis properties of meal and roller-milled flours of hard (Ceyhan-99 cv.) and soft (Eser cv.) wheat cultivars, respectively, after 6 mo of storage. Sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) technique was applied for studying the electrophoretic properties. Hard and soft wheats were infested with non-sexed S...
February 24, 2018: Journal of Economic Entomology
Luc Doyon, Zhanyang Li, Hao Li, Francesco d'Errico
Most Chinese lithic industries dated between 300,000 and 40,000 are characterized by the absence of Levallois debitage, the persistence of core-and-flake knapping, the rarity of prepared cores, their reduction with direct hard hammer percussion, and the rarity of retouched flakes. Here we report the discovery of seven bone soft hammers at the early hominin Lingjing site (Xuchang County, Henan) dated to 125,000-105,000. These artefacts represent the first instance of the use of bone as raw material to modify stone tools found at an East Asian early Late Pleistocene site...
2018: PloS One
Roger L Hammer, Joshua T Linton, Adam M Hammer
The purpose of this investigation was to determine maximal strength and jump performance outcomes of heavy squat training on a low-amplitude (<1.0 mm peak-to-peak) vibration platform (VP). Nineteen recreationally resistance-trained college-aged men (22.3 ± 1.66 years) completed the 6-week study. Participants were randomly assigned to one of two training groups: SQT (n = 10) performed conventional back squats on the floor; SQTV (n = 9) performed back squats on the VP. Supervised training took place over 12 sessions (2 days/week) which utilized an aggressive strength development protocol (85-95 % 1-RM), which was identically followed by both groups...
March 6, 2018: Journal of Strength and Conditioning Research
Emily Penick, Neha A Deshpande, Karissa Hammer, Nancy C Chescheir
No abstract text is available yet for this article.
March 8, 2018: Obstetrics and Gynecology
Mette Tranberg, Bodil Hammer Bech, Jan Blaakær, Jørgen Skov Jensen, Hans Svanholm, Berit Andersen
BACKGROUND: Cervical cancer screening participation remains insufficient in most countries. Our aim was to evaluate whether offering a HPV self-sampling kit, either mailed directly to the woman's home or using timely opt-in procedures for ordering the kit, increased screening participation compared with a standard second reminder. METHODS: In this randomized, controlled effectiveness trial, 9791 Danish women aged 30-64 who were due to receive the second reminder were equally randomized to either: 1) direct mailing of a second reminder and a self-sampling kit (directly mailed group); 2) mailing of a second reminder that offered a self-sampling kit to be ordered by e-mail, text message, phone, or webpage (opt-in group); or 3) mailing of a second reminder to attend regular cytology screening (control group)...
March 9, 2018: BMC Cancer
Jiaxing Ye, Takumi Kobayashi, Masaya Iwata, Hiroshi Tsuda, Masahiro Murakawa
Developing efficient Artificial Intelligence (AI)-enabled systems to substitute the human role in non-destructive testing is an emerging topic of considerable interest. In this study, we propose a novel hammering response analysis system using online machine learning, which aims at achieving near-human performance in assessment of concrete structures. Current computerized hammer sounding systems commonly employ lab-scale data to validate the models. In practice, however, the response signal patterns can be far more complicated due to varying geometric shapes and materials of structures...
March 9, 2018: Sensors
Jamie J Coleman, Bryan W Carr, Tyrone Rogers, Matthew S Field, Ben L Zarzaur, Stephanie A Savage, Peter M Hammer, Brian L Brewer, David V Feliciano, Grace S Rozycki
BACKGROUND: Abdominal pain is a common reason patients seek treatment in emergency departments (ED), and computed tomography (CT) is frequently used for diagnosis; however, length of stay in the ED and risks of radiation remain a concern. The hypothesis of this study was the Alvarado Score (AS) could be used to reduce CT scans and decrease ED length of stay (LOS) for patients with suspected acute appendicitis (AA). METHODS: A retrospective review of patients who underwent CT to rule out AA from January 1st, 2015, to December 31st, 2015 was performed...
March 8, 2018: Journal of Trauma and Acute Care Surgery
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