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https://www.readbyqxmd.com/read/28324056/gabaergic-neurons-and-their-modulatory-effects-on-gnrh3-in-zebrafish
#1
Yanlong Song, Binbin Tao, Ji Chen, Shaoting Jia, Zuoyan Zhu, Vance L Trudeau, Wei Hu
Gamma-aminobutyric acid (GABA) is a major amino acid neurotransmitter in the vertebrate brain. To provide detailed information on the distribution of the GABA in zebrafish (Danio rerio), neurons were labeled with mCherry driven by the glutamic acid decarboxylase 67 (gad67) promoter. In the transgenic line Tg(gad67:mCherry), mCherry-positive gad67 cell bodies were predominantly localized to the olfactory bulb, pallial zones, subpallium zones, parvocellular preoptic nucleus, periventricular gray zone of optic tectum, torus semicircularis, posterior tuberculum, medial longitudinal fascicle, caudal zone of periventricular hypothalamus, and oculomotor nucleus...
January 23, 2017: Endocrinology
https://www.readbyqxmd.com/read/28319032/binary-neutron-star-mergers-a-review-of-einstein-s-richest-laboratory
#2
Luca Baiotti, Luciano Rezzolla
The merger of binary neutron-stars systems combines in a single process: extreme gravity, copious emission of gravitational waves, complex microphysics, and electromagnetic processes that can lead to astrophysical signatures observable at the largest redshifts. We review here the recent progress in understanding what could be considered Einstein's richest laboratory, highlighting in particular the numerous significant advances of the last decade. Although special attention is paid to the status of models, techniques, and results for fully general-relativistic dynamical simulations, a review is also offered on initial data and advanced simulations with approximate treatments of gravity...
March 20, 2017: Reports on Progress in Physics
https://www.readbyqxmd.com/read/28317556/skull-5-from-dmanisi-descriptive-anatomy-comparative-studies-and-evolutionary-significance
#3
G Philip Rightmire, Marcia S Ponce de León, David Lordkipanidze, Ann Margvelashvili, Christoph P E Zollikofer
A fifth hominin skull (cranium D4500 and mandible D2600) from Dmanisi is massively constructed, with a large face and a very small brain. Traits documented for the first time in a basal member of the Homo clade include the uniquely low ratio of endocranial volume to basicranial width, reduced vertex height, angular vault profile, smooth nasal sill coupled with a long and sloping maxillary clivus, elongated palate, and tall mandibular corpus. The convex clivus and receding symphysis of skull 5 produce a muzzle-like form similar to that of Australopithecus afarensis...
March 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28306202/ultra-performance-convergence-chromatography-for-the-quantitative-determination-of-bioactive-compounds-in-aralia-continentalis-kitagawa-as-quality-control-markers
#4
Hyo Seon Kim, Byeong Cheol Moon, Goya Choi, Wook Jin Kim, A Yeong Lee
A rapid ultra-performance convergence chromatography method was developed for the quantitative determination of bioactive compounds in Aralia continentalis as quality control markers. Quantitative analysis indicated the presence of two major bioactive compounds: diterpenoid acids continentalic acid and kaurenoic acid. Using a Torus 1-Aminoanthracene column, continentalic acid and kaurenoic acid were separated in less than 8 min. The method was validated with respect to precision, accuracy, and linearity according to the International Conference on Harmonization guidelines...
March 17, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28275284/imaging-aspects-of-palatal-torus-in-cone-beam-computed-tomography-and-magnetic-resonance-case-report
#5
Vivian Narana Ribeiro El Achkar, Sérgio Lucio Pereira de Castro Lopes, Antonione Santos Bezerra Pinto, Renata Falchete do Prado, Estela Kaminagakura
The torus palatinus is a unilocular or multilocular exostosis that occurs in the midline of the hard palate. It is considered a common clinical finding. Magnetic resonance imaging (MRI) is not commonly used in dentistry and descriptions of the torus by this imaging method are therefore rare in the literature. This case study reports on a female patient referred to the dentist to elucidate a bone enlargement detected by MRI, which was requested by the physician who accompanied the patient for migraine treatment...
December 2016: Acta Stomatologica Croatica
https://www.readbyqxmd.com/read/28268225/pattern-of-nitrergic-neuronal-system-organization-in-the-brain-of-two-holostean-fishes-actinopterygii-ginglymodi
#6
Jesús M López, Daniel Lozano, Lorena Morales, Agustín González
The study of the nitrergic system, formed by the networks of neurons containing the enzyme nitric oxide synthase (NOS), has been extremely useful in unraveling neuroanatomical features of the organization of the central nervous system of vertebrates. Thus, data are available for representatives of most vertebrate classes and, in particular, several studies have detailed the organization of this system in teleosts. In contrast, no information is available regarding this neurotransmission system in the brains of holosteans, an early diverged and poorly understood group of actinopterygian fishes, currently considered a sister group of teleosts that contains only 8 species...
March 8, 2017: Brain, Behavior and Evolution
https://www.readbyqxmd.com/read/28264903/longitudinal-quasi-static-stability-predicts-changes-in-dog-gait-on-rough-terrain
#7
Simon Wilshin, Michelle A Reeve, G Clark Haynes, Shai Revzen, Daniel E Koditschek, Andrew J Spence
Legged animals utilize gait selection to move effectively and must re-cover from environmental perturbations. We show that on rough terrain domestic dogs, Canis lupus familiaris, spend more time in longitudinal quasi-statically stable patterns of movement. Here longitudinal refers to the rostro-caudal, axis. We used an existing model in the literature to quantify the longitudinal quasi-static stability of gaits neighbouring the walk, and found that trot-like gaits are more stable. We thus hypothesized that when perturbed, the rate of return to a stable gait would depend on the direction of perturbation, such that perturbations towards less quasi-statically stable patterns of movement would be more rapid than those towards more stable patterns of movement...
March 6, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28256866/cornering-gapless-quantum-states-via-their-torus-entanglement
#8
William Witczak-Krempa, Lauren E Hayward Sierens, Roger G Melko
The entanglement entropy (EE) has emerged as an important window into the structure of complex quantum states of matter. We analyze the universal part of the EE for gapless systems on tori in 2D and 3D, denoted by χ. Focusing on scale-invariant systems, we derive general nonperturbative properties for the shape dependence of χ and reveal surprising relations to the EE associated with corners in the entangling surface. We obtain closed-form expressions for χ in 2D and 3D within a model that arises in the study of conformal field theories (CFTs), and we use them to obtain Ansätze without fitting parameters for the 2D and 3D free boson CFTs...
February 17, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28256846/anisotropic-electron-tail-generation-during-tearing-mode-magnetic-reconnection
#9
Ami M DuBois, Abdulgader F Almagri, Jay K Anderson, Daniel J Den Hartog, John David Lee, John S Sarff
The first experimental evidence of anisotropic electron energization during magnetic reconnection that favors a direction perpendicular to the guide magnetic field in a toroidal, magnetically confined plasma is reported in this Letter. Magnetic reconnection plays an important role in particle heating, energization, and transport in space and laboratory plasmas. In toroidal devices like the Madison Symmetric Torus, discrete magnetic reconnection events release large amounts of energy from the equilibrium magnetic field...
February 17, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28254945/late-pleistocene-archaic-human-crania-from-xuchang-china
#10
Zhan-Yang Li, Xiu-Jie Wu, Li-Ping Zhou, Wu Liu, Xing Gao, Xiao-Mei Nian, Erik Trinkaus
Two early Late Pleistocene (~105,000- to 125,000-year-old) crania from Lingjing, Xuchang, China, exhibit a morphological mosaic with differences from and similarities to their western contemporaries. They share pan-Old World trends in encephalization and in supraorbital, neurocranial vault, and nuchal gracilization. They reflect eastern Eurasian ancestry in having low, sagittally flat, and inferiorly broad neurocrania. They share occipital (suprainiac and nuchal torus) and temporal labyrinthine (semicircular canal) morphology with the Neandertals...
March 3, 2017: Science
https://www.readbyqxmd.com/read/28251927/shrinking-instability-of-toroidal-droplets
#11
Alexandros A Fragkopoulos, Ekapop Pairam, Eric Berger, Phil N Segre, Alberto Fernández-Nieves
Toroidal droplets are inherently unstable due to surface tension. They can break up, similar to cylindrical jets, but also exhibit a shrinking instability, which is inherent to the toroidal shape. We investigate the evolution of shrinking toroidal droplets using particle image velocimetry. We obtain the flow field inside the droplets and show that as the torus evolves, its cross-section significantly deviates from circular. We then use the experimentally obtained velocities at the torus interface to theoretically reconstruct the internal flow field...
March 1, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28249474/a-multi-channel-capacitive-probe-for-electrostatic-fluctuation-measurement-in-the-madison-symmetric-torus-reversed-field-pinch
#12
Mingsheng Tan, Douglas R Stone, Joseph C Triana, Abdulgader F Almagri, Gennady Fiksel, Weixing Ding, John S Sarff, Karsten J McCollam, Hong Li, Wandong Liu
A 40-channel capacitive probe has been developed to measure the electrostatic fluctuations associated with the tearing modes deep into Madison Symmetric Torus (MST) reversed field pinch plasma. The capacitive probe measures the ac component of the plasma potential via the voltage induced on stainless steel electrodes capacitively coupled with the plasma through a thin annular layer of boron nitride (BN) dielectric (also serves as the particle shield). When bombarded by the plasma electrons, BN provides a sufficiently large secondary electron emission for the induced voltage to be very close to the plasma potential...
February 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28244925/variation-among-pediatric-orthopaedic-surgeons-when-diagnosing-and-treating-pediatric-and-adolescent-distal-radius-fractures
#13
Karan Dua, Matthew K Stein, Nathan N O'Hara, Brian K Brighton, William L Hennrikus, Martin J Herman, J Todd Lawrence, Charles T Mehlman, Norman Y Otsuka, M Wade Shrader, Brian G Smith, Paul D Sponseller, Joshua M Abzug
BACKGROUND: Distal radius fractures are the most common injury in the pediatric population. The purpose of this study was to determine the variation among pediatric orthopaedic surgeons when diagnosing and treating distal radius fractures. METHODS: Nine pediatric orthopaedic surgeons reviewed 100 sets of wrist radiographs and were asked to describe the fracture, prescribe the type of treatment and length of immobilization, and determine the next follow-up visit...
February 27, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28238392/quantitative-representation-of-eustachian-tube-component-movements-during-swallowing
#14
Selma Cetin, Miriam S Teixeira, Cuneyt M Alper
OBJECTIVE: Describes a method of dynamic video-endoscopy of the Eustachian tube (ET) orifice at the nasopharynx to quantitatively represent ET component movements during swallowing using a graphic function and analyze their importance to its opening mechanics. METHODS: This was a pilot study of relational event capture using a polar coordinate system applied to trans-nasal video-endoscopic recordings of the ET during 3 swallows in 5 adults. After topical anesthesia of the nose, a 45° telescope was introduced unilaterally and focused on the ipsilateral ET orifice...
February 18, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28229236/asymmetric-bone-remodeling-in-mandibular-and-maxillary-tori
#15
Jean-Daniel Kün-Darbois, Bernard Guillaume, Daniel Chappard
OBJECTIVES: Tori are frequent paucisymptomatic bony outgrowths of the oral cavity in three locations: torus palatinus (TP), mandibularis (TM), and maxillaris (TMax). Their usually described histological characteristics are unspecific: normal cortical bone with more or less trabecular bone. The aim of this study was to describe tori's specific morphological and histomorphometric characteristics. MATERIALS AND METHODS: Histological characteristics in a series of 18 tori collected after surgical removal were analyzed...
February 23, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28213765/association-between-signs-and-symptoms-of-bruxism-and-presence-of-tori-a-systematic-review
#16
Eduardo Bertazzo-Silveira, Juliana Stuginski-Barbosa, André Luís Porporatti, Bruce Dick, Carlos Flores-Mir, Daniele Manfredini, Graziela De Luca Canto
OBJECTIVE: This systematic review aims to answer the question: "Is there an association between any specific signs and symptoms of bruxism and the presence of tori?" MATERIAL AND METHODS: Observational studies, which evaluated the association between signs and symptoms of bruxism and tori, were selected. Signs and symptoms of bruxism (such as teeth grinding, jaw clenching, abnormal tooth wear, facial muscle hypertrophy, pain, or fatigue) had to be determined by questionnaire or anamnesis and tori within clinical assessment...
February 17, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28191303/alma-observations-of-the-water-fountain-pre-planetary-nebula-iras-16342-3814-high-velocity-bipolar-jets-and-an-expanding-torus
#17
R Sahai, W H T Vlemmings, T Gledhill, C Sánchez Contreras, E Lagadec, L-Å Nyman, G Quintana-Lacaci
We have mapped (12)CO J=3-2 and other molecular lines from the "water-fountain" bipolar pre-planetary nebula (PPN) IRAS 16342-3814 with [Formula: see text] resolution using ALMA. We find (i) two very high-speed knotty, jet-like molecular outflows, (ii) a central high-density (> few × 10(6) cm(-3)), expanding torus of diameter 1300 AU, and (iii) the circumstellar envelope of the progenitor AGB, generated by a sudden, very large increase in the mass-loss rate to > 3.5 × 10(-4)M⊙ yr(-1) in the past ~455 yr...
January 20, 2017: Astrophysical Journal. Letters
https://www.readbyqxmd.com/read/28188453/orexin-a-rescues-chronic-copper-dependent-behavioral-and-hsp90-transcriptional-alterations-in-the-ornate-wrasse-brain
#18
Merylin Zizza, Marcello Canonaco, Rosa Maria Facciolo
Recently, orexin (ORX)ergic system has gained great attention for its major neuroregulatory role on fish motor, circadian, feeding activities and above all during water toxic conditions. Fish are particularly sensitive to acute sublethal copper (Cu) concentrations while little is known about neurobehavioral data after chronic Cu exposure. For this work, the marine teleost ornate wrasse (Thalassoma pavo) was monitored for 21 days during exposure to a relatively low CuCl2 concentration (0.25 mg/l). In particular, at 1 day fish displayed moderate reductions (-32%) of feeding behaviors versus controls that decreased up to -94% at 21 days...
February 10, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28187020/torus-palatinus-and-airway-management
#19
Jesse Aron, Stephen J Raithel, Andrew J Mannes
No abstract text is available yet for this article.
February 10, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28076877/ultrasound-imaging-for-ovarian-and-deep-infiltrating-endometriosis
#20
Caterina Exacoustos, Errico Zupi, Emilio Piccione
The main challenges of imaging for endometriosis are the detection of nonovarian disease and the evaluation of the extension of the disease into pelvic structures. Transvaginal ultrasonography (TVS) has been proposed as the first-line imaging technique because it allows extensive exploration of the pelvis. The "typical" endometrioma is a unilocular cyst with homogeneous low-level echogenicity (ground glass echogenicity) of the cyst fluid. The use of color Doppler helps avoid classifying malignancies as endometriomas, defining the presence of vascular flow in papillations...
January 2017: Seminars in Reproductive Medicine
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