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Reimer Stick, Pavel Dráber
No abstract text is available yet for this article.
March 16, 2017: Protoplasma
Konik R Kothari, Ahmed E Elbanna
Shear banding and stick-slip instabilities have been long observed in sheared granular materials. Yet, their microscopic underpinnings, interdependencies, and variability under different loading conditions have not been fully explored. Here we use a nonequilibrium thermodynamics model, the Shear Transformation Zone theory, to investigate the dynamics of strain localization and its connection to stability of sliding in sheared, dry, granular materials. We consider frictional and frictionless grains as well as the presence and absence of acoustic vibrations...
February 2017: Physical Review. E
Hirokazu Ueta, Mitsunori Kurahashi
O2 adsorption on Pt surfaces is of great technological importance owing to its relevance to reactions for the purification of car exhaust gas and the oxygen reduction on fuel-cell electrodes. Although the O2 /Pt(111) system has been investigated intensively, questions still remain concerning the origin of the low O2 sticking probability and its unusual energy dependence. We herein clarify the alignment dependence of the initial sticking probability (S0 ) using the single spin-rotational state-selected [(J,M)=(2,2)] O2 beam...
March 15, 2017: Angewandte Chemie
N Singh, C B Gilks
No abstract text is available yet for this article.
March 15, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
Mizuki Tenjimbayashi, Masaki Higashi, Taku Yamazaki, Issei Takenaka, Takeshi Matsubayashi, Takeo Moriya, Masatsugu Komine, Ryohei Yoshikawa, Kengo Manabe, Seimei Shiratori
In this letter, we introduce a novel liquid manipulation strategy to design dynamically hydrophobic and statically hydrophobic/hydrophilic patterned surfaces using an "omniphobicity"-based technique. The surfaces guide the sliding direction of a droplet in the presence of a statically hydrophilic area where the droplet does not stick on the transport path significantly enhancing the fluidic system transport efficiency. The concept of dynamically hydrophobic and statically hydrophobic/hydrophilic patterned surfaces in conjunction with omniphobic patterning techniques having surface multifunctionality, we believe, has potential not only for fluidic applications but also for future material engineering development...
March 20, 2017: ACS Applied Materials & Interfaces
Lei Zhao, Jiahe Huang, Yuancheng Zhang, Tao Wang, Weixiang Sun, Zhen Tong
Facile preparing, rapid actuating, and versatile actions are great challenges in exploring new kinds of hydrogel actuators. In this paper, we presented a facile sticking method to prepare Janus bilayer and multilayer hydrogel actuators benefited from a special tough and adhesive PAA-clay hydrogel. Combining physical and chemical cross-linking reagents, we endowed the PAA gel with both toughness and adhesion. This PAA gel was reinforced by further cross-linked with Fe(3+). These two hydrogels with different cross-linking densities exhibited different swelling capabilities and moduli in the media manipulated by pH and ionic strength, thus acted as promising candidates for soft actuators...
March 14, 2017: ACS Applied Materials & Interfaces
Elisabetta Visalberghi, Cecilia Di Bernardi, Luca A Marino, Dorothy Fragaszy, Patricia Izar
Female wild bearded capuchins (Sapajus libidinosus) living at Serra da Capivara National Park (SCNP) that use stone and stick tools during foraging occasionally toss or throw stones at the male during courtship. We report similar behaviors in a different population that uses stones as tools in foraging. We video-recorded the sexual behavior of four females (27 days during nine proceptive periods) belonging to a group of wild capuchins living in Fazenda Boa Vista (FBV), 320 km from SCNP. Three females used stones or branches when they solicited the alpha male (79 episodes)...
March 13, 2017: Journal of Comparative Psychology
Øyvind Gløersen, Håvard Myklebust, Jostein Hallén, Peter Federolf
The aim of this study was to advance current movement analysis methodology to enable a technique analysis in sports facilitating (1) concurrent comparison of the techniques between several athletes; (2) identification of potentially beneficial technique modifications and (3) a visual representation of the findings for feedback to the athletes. Six elite cross-country skiers, three world cup winners and three national elite, roller ski skated using the V2 technique on a treadmill while their movement patterns were recorded using 41 reflective markers...
March 13, 2017: Journal of Sports Sciences
Tapio Nummi, Pekka Virtanen, Päivi Leino-Arjas, Anne Hammarström
BACKGROUND: Functional somatic symptoms (FSS), or symptoms without a clear medical explanation are a considerable challenge for health care systems. There is no general consensus as to which symptoms should be regarded functional. Few longitudinal studies on the development of FSS exist and these have mainly been based on the assumption that the factorial structure of a FSS scores variable remains invariant over time. When the analysis covers longer periods of the life course, this may be challenged...
2017: Archives of Public Health, Archives Belges de Santé Publique
Alessandro Micarelli, Agostino Chiaravalloti, Roberta Danieli, Orazio Schillaci, Marco Alessandrini
Idiopathic olfactory loss neural consequences have been studied especially by means of magnetic resonance imaging. Since other functional neuroimaging technique findings are lacking in the literature, present study used a validated (18)F-2-fluoro-2-deoxy-D-glucose (FDG) functional positron emission tomography procedure under olfactory stimulation (OS) to assess brain changes in idiopathic anosmic patients (IAPs) in comparison with healthy subjects (HS). A voxel-based analysis between these groups was used to evaluate FDG uptake in the brain and perform a correlation analysis between metabolic responses and the Sniffin' stick test as well as intensity visuo-analogue scores and disease duration (DD)...
March 10, 2017: European Archives of Oto-rhino-laryngology
Jourdan M Cancienne, Brian C Werner, M Tyrrell Burrus, Abdurrahman Kandil, Evan J Conte, Frank W Gwathmey, Mark D Miller
The purpose of this study was to use fluoroscopy to measure the distance between the transseptal portal and the popliteal artery under arthroscopic conditions with an intact posterior knee capsule, and to determine the difference between 90 degrees of knee flexion and full extension. The popliteal artery of eight fresh-frozen cadaveric knees was dissected and cannulated proximal to the knee joint. The posterolateral, posteromedial, and transseptal portals were then established at 90 degrees of flexion. A 4-mm switching stick was placed through the transseptal portal, and barium contrast was injected into the popliteal artery...
March 10, 2017: Journal of Knee Surgery
Katie A Edwards, Ricki Korff, Antje J Baeumner
Clinical and environmental analyses frequently necessitate rapid, simple, and inexpensive point-of-care or field tests. These semiquantitative tests may be later followed up by confirmatory laboratory-based assays, but provide an initial scenario assessment important for resource mobilization and threat confinement. Lateral-flow assays (LFAs) and dip-stick assays, which are typically antibody-based and yield a visually detectable signal, provide an assay format suiting these applications extremely well. Signal generation is commonly obtained through the use of colloidal gold or latex beads, which yield a colored band either directly proportional or inversely proportional to the concentration of the analyte of interest...
2017: Methods in Molecular Biology
Gareth Iacobucci
No abstract text is available yet for this article.
March 9, 2017: BMJ: British Medical Journal
Aubrey J Rodriguez, Gayla Margolin
The purposes of this study were to assess the ways adolescents in active-duty military families provide emotional and instrumental support to civilian mothers and to investigate the implications of such support for their own symptoms of depression. Eighty adolescents from active-duty military families provided self-report ratings of emotional and instrumental support rendered to their civilian mothers. Mother-adolescent dyads engaged in a 10-min discussion of military experiences, which was coded for adolescents' emotional validation of their mothers...
February 16, 2017: Journal of Clinical Child and Adolescent Psychology
Charles T Snowdon, Thomas R Roskos
Some captive cotton-top tamarins spontaneously weave sticks in the mesh of their enclosures so that the stick is lodged between two mesh openings. Sticks are broken from natural branches placed in the enclosures and often modified by biting them in the center before weaving through the mesh. To investigate this further, we systematically surveyed all animals in our colony and found that all successful stick-weaving tamarins were descendants from only 2 of the 16 breeding groups contributing to the colony membership at the time of surveying or were the mates of these descendants, suggesting stick-weaving is a socially learned behavior...
March 9, 2017: Journal of Comparative Psychology
Eugen Stulz
DNA is well-known as bearer of the genetic code. Since its structure elucidation nearly seven decades ago by Watson, Crick, Wilkins, and Franklin, much has been learned about its detailed structure, function, and genetic coding. The development of automated solid-phase synthesis, and with it the availability of synthetic DNA with any desired sequence in lengths of up to hundreds of bases in the best case, has contributed much to the advancement of the field of DNA research. In addition, classic organic synthesis has allowed introduction of a very large number of modifications in the DNA in a sequence specific manner, which have initially been targeted at altering the biological function of DNA...
March 8, 2017: Accounts of Chemical Research
Sabri Koseoğlu, Serhan Derin, Mustafa Yilmaz, Gulnihal Kutlu, Murat Sahan
BACKGROUND: Olfactory function deteriorates in patients with severe obstructive sleep apnea syndrome (OSAS). The effect of positive airway pressure (PAP) therapy on olfactory function has not been investigated before. In this study, we aimed to investigate the role of PAP therapy on olfactory impairment in patients with OSAS. METHODS: Thirty patients who had OSAS and planned for PAP therapy were included in the study. All participants underwent a detailed otorhinolaryngological examination and polysomnography...
March 8, 2017: International Forum of Allergy & Rhinology
F Z M Soares, T L Lenzi, R de Oliveira Rocha
AIM: To evaluate the water storage degradation of resin-dentine bonds of different adhesive systems to primary and permanent human dentine. METHODS: Flat occlusal human dentine surfaces of 15 primary molars and 15 permanent molars were randomly assigned according to adhesive systems: Adper Single Bond 2; Clearfil SE Bond and One Up Bond F Plus. After bonding procedures, the adhesives were applied according to the manufacturers' instructions and composite resin blocks were built...
March 7, 2017: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
You Liang Lionel, Wong, Gary K Fedder
This paper presents an elastic ribbon-like piezoelectric energy harvester which is targeted for skin-wearable devices by harnessing the movements of stretchable surfaces. The device aims to power up smart thin stick-on devices for healthcare monitoring. By embedding a ribbon-like PVDF film in a flexible elastomer, Ecoflex, the device is potentially able to stretch 34%, while maintaining internal strain of the film below its plastic deformation limit. Alternate electrode layout and bimorph configuration help to reduce charge cancellation, while increasing overall effectiveness...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Yoshiyuki Midorikawa, Hiroshi Takemura, Hiroshi Mizoguchi, Kohei Soga, Masao Kamimura, Kazuhiro Suga, Wei-Jen Lai, Zuisei Kanno, Motohiro Uo
The purpose of this study is to develop a sensing system device that measures three-axis orthodontic forces and three-axis orthodontic moments for dentist training. The developed sensing system is composed of six-axis force sensors, action sticks, sliders, and tooth models. The developed system also simulates various types of tooth row shape patterns in orthodontic operations, and measures a 14 × 6 axis orthodontic force and moment from tooth models simultaneously. The average force and moment error per loaded axis were 2...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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