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https://www.readbyqxmd.com/read/28924526/first-report-of-tripled-retromolar-foramina
#1
Puhan He, Joe Iwanaga, Mindy K Truong, Nimer Adeeb, R Shane Tubbs, Koh-Ichi Yamaki
The retromolar foramen (RMF) is the bony entrance of the retromolar canal, through which a neurovascular bundle runs. It is essential to locate such anatomic variants in a patient in order to avoid complications in surgery, implant placement, or anesthesia of the area. To our knowledge, there has only been one case report of supernumerary RMF, which reported one bilateral doubled retromolar foramina and one doubled left RMF. We present an extremely rare case in which a right triple RMF was observed on cone beam computed tomography in a cadaver...
July 7, 2017: Curēus
https://www.readbyqxmd.com/read/28813063/tuning-mass-transport-in-magnetic-nanoparticle-filled-viscoelastic-hydrogels-using-low-frequency-rotating-magnetic-fields
#2
Shahab Boroun, Faïçal Larachi
This study investigates the response of magnetic nanoparticles (MNPs), dispersed in a viscoelastic hydrogel, to an external rotating magnetic field (RMF) for the purpose of developing a new class of magneto-responsive materials with tunable mass transport properties. Ferrogels were prepared by chemical cross-linking and polymerization of acrylamide in colloidal dispersions of thermally blocked MNPs of cobalt ferrite. Magnetization measurements of ferrogels in a swollen state revealed a transitional state from ferromagnetism to superparamagnetism through the shrinkage of hysteresis loops and the reduction of remanent magnetization...
September 20, 2017: Soft Matter
https://www.readbyqxmd.com/read/28771216/curve-set-feature-based-robust-and-fast-pose-estimation-algorithm
#3
Mingyu Li, Koichi Hashimoto
Bin picking refers to picking the randomly-piled objects from a bin for industrial production purposes, and robotic bin picking is always used in automated assembly lines. In order to achieve a higher productivity, a fast and robust pose estimation algorithm is necessary to recognize and localize the randomly-piled parts. This paper proposes a pose estimation algorithm for bin picking tasks using point cloud data. A novel descriptor Curve Set Feature (CSF) is proposed to describe a point by the surface fluctuation around this point and is also capable of evaluating poses...
August 3, 2017: Sensors
https://www.readbyqxmd.com/read/28735241/a-new-integrated-approach-to-analyze-bulk-tank-milk-and-raw-milk-filters-for-the-presence-of-the-e-coli-serogroups-frequently-associated-with-vtec-status
#4
Francesca Albonico, Claudia Gusmara, Theo Gugliotta, Monica Loiacono, Michele Mortarino, Alfonso Zecconi
We optimized a combination of microbiological and molecular methods to quickly identify the presence of the O157 and the six non-O157 serogroups (O26, O45, O103, O111, O121 and O145) most frequently associated with VTEC status, at herd level. The lower detection limit of this methodology is 10(1)CFU/ml for each of the serogroups tested. We tested 67 bulk tank milk (BTM) and raw milk filters (RMF) derived from dairy herds located in Lombardy and Trentino Alto Adige. We identified 3 positive samples and 20 positive samples out of 67 respectively in the BTM and RMF...
July 17, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28677751/effects-of-rmf-on-bkca-and-kv-channels-in-basilar-arterial-smooth%C3%A2-muscle-cells-of-shr
#5
Yan-Fei Qian, Yang Wang, Wei-Wei Tian, Sheng Wang, Lei Zhao, Li Li, Ke-Tao Ma, Jun-Qiang Si
The current study observed the effects and investigated the mechanism of remifentanil (RMF) on the isolated cerebral basilar arteries of spontaneously hypertensive rats (SHR) and Wistar‑Kyoto (WKY) rats. A pressure myograph system was used to observe and compare the effects of different concentrations of RMF (10‑10‑10‑5 mol/l) on the diameter changes of freshly isolated cerebral basilar arteries, which have been pre‑shrunk by phenylephrine (PE), an endothelium‑independent vasoconstrictor. Vascular smooth‑muscle cells of the cerebral basilar artery (BASMCs) were freshly obtained via enzymolysis...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28561011/rapid-implementation-of-the-repair-misrepair-fixation-rmf-model-facilitating-online-adaption-of-radiosensitivity-parameters-in-ion-therapy
#6
F Kamp, D J Carlson, J J Wilkens
INTRODUCTION: Treatment planning for ion therapy must account for physical properties of the beam as well as differences in the relative biological effectiveness (RBE) of ions compared to photons. In this work, we present a fast RBE calculation approach, based on the decoupling of physical properties and the [Formula: see text] ratio commonly used to describe the radiosensitivity of irradiated cells or organs. MATERIAL AND METHODS: In the framework of the mechanistic repair-misrepair-fixation (RMF) model, the biological modeling can be decoupled from the physical dose...
July 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28506884/enhancing-effect-of-50%C3%A2-hz-rotating-magnetic-field-on-induction-of-shiga-toxin-converting-lambdoid-prophages
#7
M Struk, B Grygorcewicz, P Nawrotek, A Augustyniak, M Konopacki, M Kordas, R Rakoczy
Studies aimed at investigating factors and mechanism of induction of prophages, a major pathogenesis factor of Shiga toxin-producing Escherichia coli (STEC), are considered important to develop an effective treatment for STEC infections. In this study, we demonstrated the synergistic effect of the rotating magnetic field (RMF) of induction B = 34 mT and frequency ƒ = 50 Hz at a constant temperature of 37 °C and mitomycin C (MMC), that resulted in a higher level of induction of stx-carrying lambdoid Stx prophages...
May 12, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28468753/structure-of-the-bacillus-subtilis-hibernating-100s-ribosome-reveals-the-basis-for-70s-dimerization
#8
Bertrand Beckert, Maha Abdelshahid, Heinrich Schäfer, Wieland Steinchen, Stefan Arenz, Otto Berninghausen, Roland Beckmann, Gert Bange, Kürşad Turgay, Daniel N Wilson
Under stress conditions, such as nutrient deprivation, bacteria enter into a hibernation stage, which is characterized by the appearance of 100S ribosomal particles. In Escherichia coli, dimerization of 70S ribosomes into 100S requires the action of the ribosome modulation factor (RMF) and the hibernation-promoting factor (HPF). Most other bacteria lack RMF and instead contain a long form HPF (LHPF), which is necessary and sufficient for 100S formation. While some structural information exists as to how RMF and HPF mediate formation of E...
July 14, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28431088/stationary-phase-genes-upregulated-by-polyamines-are-responsible-for-the-formation-of-escherichia-coli-persister-cells-tolerant-to-netilmicin
#9
Alexander G Tkachenko, Natalya M Kashevarova, Elena A Tyuleneva, Mikhail S Shumkov
Persisters are rare phenotypic variants of regular bacterial cells that survive lethal antibiotics or stresses owing to slowing down of their metabolism. Recently, we have shown that polyamine putrescine can upregulate persister cell formation in Escherichia coli via the stimulation of rpoS expression, encoding a master regulator of general stress response. We hypothesized that rmf and yqjD, the stationary-phase genes responsible for ribosome inactivation, might be good candidates for the similar role owing to their involvement in translational arrest and the ability to be affected by polyamines...
May 1, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28422657/phased-array-ultrasound-system-for-planar-flow-mapping-in-liquid-metals
#10
Kevin Mader, Richard Nauber, Vladimir Galindo, Hannes Beyer, Lars Buttner, Sven Eckert, Jurgen Czarske
Controllable magnetic fields can be used to optimize flows in technical and industrial processes involving liquid metals in order to improve quality and yield. However, experimental studies in magnetohydrodynamics often involve complex, turbulent flows and require planar, two-component (2c) velocity measurements through only one acoustical access. We present the phased array ultrasound Doppler velocimeter as a modular research platform for flow mapping in liquid metals. It combines the pulse wave Doppler method with the phased array technique to adaptively focus the ultrasound beam...
September 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28370951/multivariate-genetic-architecture-of-the-anolis-dewlap-reveals-both-shared-and-sex-specific-features-of-a-sexually-dimorphic-ornament
#11
R M Cox, R A Costello, B E Camber, J W McGlothlin
Darwin viewed the ornamentation of females as an indirect consequence of sexual selection on males and the transmission of male phenotypes to females via the 'laws of inheritance'. Although a number of studies have supported this view by demonstrating substantial between-sex genetic covariance for ornament expression, the majority of this work has focused on avian plumage. Moreover, few studies have considered the genetic basis of ornaments from a multivariate perspective, which may be crucial for understanding the evolution of sex differences in general, and of complex ornaments in particular...
March 31, 2017: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/28300790/non-destructive-detection-of-wire-rope-discontinuities-from-residual-magnetic-field-images-using-the-hilbert-huang-transform-and-compressed-sensing
#12
Juwei Zhang, Xiaojiang Tan, Pengbo Zheng
Electromagnetic methods are commonly employed to detect wire rope discontinuities. However, determining the residual strength of wire rope based on the quantitative recognition of discontinuities remains problematic. We have designed a prototype device based on the residual magnetic field (RMF) of ferromagnetic materials, which overcomes the disadvantages associated with in-service inspections, such as large volume, inconvenient operation, low precision, and poor portability by providing a relatively small and lightweight device with improved detection precision...
March 16, 2017: Sensors
https://www.readbyqxmd.com/read/28221827/hormonally-mediated-increases-in-sex-biased-gene-expression-accompany-the-breakdown-of-between-sex-genetic-correlations-in-a-sexually-dimorphic-lizard
#13
Robert M Cox, Christian L Cox, Joel W McGlothlin, Daren C Card, Audra L Andrew, Todd A Castoe
The evolution of sexual dimorphism is predicted to occur through reductions in between-sex genetic correlations (rmf) for shared traits, but the physiological and genetic mechanisms that facilitate these reductions remain largely speculative. Here, we use a paternal half-sibling breeding design in captive brown anole lizards (Anolis sagrei) to show that the development of sexual size dimorphism is mirrored by the ontogenetic breakdown of rmf for body size and growth rate. Using transcriptome data from the liver (which integrates growth and metabolism), we show that sex-biased gene expression also increases dramatically between ontogenetic stages bracketing this breakdown of rmf...
March 2017: American Naturalist
https://www.readbyqxmd.com/read/28094917/tuning-the-ignition-performance-of-a-microchip-initiator-by-integrating-various-al-moo3-reactive-multilayer-films-on-a-semiconductor-bridge
#14
Jianbing Xu, Yu Tai, Chengbo Ru, Ji Dai, Yinghua Ye, Ruiqi Shen, Peng Zhu
Reactive multilayer films (RMFs) can be integrated into semiconducting electronic structures with the use of microelectromechanical systems (MEMS) technology and represent potential applications in the advancement of microscale energy-demanding systems. In this study, aluminum/molybdenum trioxide (Al/MoO3)-based RMFs with different modulation periods were integrated on a semiconductor bridge (SCB) using a combination of an image reversal lift-off process and magnetron sputtering technology. This produced an energetic semiconductor bridge (ESCB)-chip initiator with controlled ignition performance...
January 31, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28074534/depolarizing-%C3%AE-aminobutyric-acid-contributes-to-glutamatergic-network-rewiring-in-epilepsy
#15
Nazim Kourdougli, Christophe Pellegrino, Juho-Matti Renko, Stanislav Khirug, Geneviève Chazal, Tiina-Kaisa Kukko-Lukjanov, Sari E Lauri, Jean-Luc Gaiarsa, Liang Zhou, Angélique Peret, Eero Castrén, Raimo K Tuominen, Valérie Crépel, Claudio Rivera
OBJECTIVE: Rewiring of excitatory glutamatergic neuronal circuits is a major abnormality in epilepsy. Besides the rewiring of excitatory circuits, an abnormal depolarizing γ-aminobutyric acidergic (GABAergic) drive has been hypothesized to participate in the epileptogenic processes. However, a remaining clinically relevant question is whether early post-status epilepticus (SE) evoked chloride dysregulation is important for the remodeling of aberrant glutamatergic neuronal circuits. METHODS: Osmotic minipumps were used to infuse intracerebrally a specific inhibitor of depolarizing GABAergic transmission as well as a functionally blocking antibody toward the pan-neurotrophin receptor p75 (p75(NTR) )...
February 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28047372/su-f-t-128-dose-volume-constraints-for-particle-therapy-treatment-planning
#16
R Stewart, W Smith, K Hendrickson, J Meyer, N Cao, E Lee, O Gopan, G Sandison, U Parvathaneni, G Laramore
PURPOSE: Determine equivalent Organ at Risk (OAR) tolerance dose (TD) constraints for MV x-rays and particle therapy. METHODS: Equivalent TD estimates for MV x-rays are determined from an isoeffect, regression-analysis of published and in-house constraints for various fractionation schedules (n fractions). The analysis yields an estimate of (α/β) for an OAR. To determine equivalent particle therapy constraints, the MV x-ray TD(n) values are divided by the RBE for DSB induction (RBEDSB ) or cell survival (RBES )...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/27939605/dynamics-of-the-escherichia-coli-proteome-in-response-to-nitrogen-starvation-and-entry-into-the-stationary-phase
#17
Heloisa B S Sanchuki, Fernanda Gravina, Thiago E Rodrigues, Edileusa C M Gerhardt, Fábio O Pedrosa, Emanuel M Souza, Roberto T Raittz, Glaucio Valdameri, Gustavo A de Souza, Luciano F Huergo
Nitrogen is needed for the biosynthesis of biomolecules including proteins and nucleic acids. In the absence of fixed nitrogen prokaryotes such as E. coli immediately ceases growth. Ammonium is the preferred nitrogen source for E. coli supporting the fastest growth rates. Under conditions of ammonium limitation, E. coli can use alternative nitrogen sources to supply ammonium ions and this reprogramming is led by the induction of the NtrC regulon. Here we used label free proteomics to determine the dynamics of E...
March 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27863925/number-and-function-of-circulating-endothelial-progenitor-cells-in-patients-with-primary-budd-chiari-syndrome
#18
Rui Huang, Qingqiao Zhang, Qianxin Huang, Maoheng Zu, Hao Xu, Lingyu Zeng
BACKGROUND AND AIM: Primary Budd-Chiari syndrome (BCS) is associated with vascular endothelial injury. Circulating endothelial progenitor cells (EPCs) provide an endogenous mechanism to repair endothelial injury. This study investigated the levels and functionality of EPCs in patients with primary BCS. METHODS: EPCs (CD34(+)/CD133(+)/KDR(+)) were quantified in 82 patients with primary BCS (inferior vena cava type: n=19; hepatic vein type: n=22; and mixed type: n=41), 10 cirrhosis controls (CC group) and 10 age-matched healthy controls (HC group), using flow cytometry...
November 15, 2016: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/27786558/increased-water-content-in-bacterial-cellulose-synthesized-under-rotating-magnetic-fields
#19
Karol Fijałkowski, Anna Żywicka, Radosław Drozd, Adam Feliks Junka, Dorota Peitler, Marian Kordas, Maciej Konopacki, Patrycja Szymczyk, Rafał Rakoczy
The current study describes properties of bacterial cellulose (BC) obtained from Komagataeibacter xylinus cultures exposed to the rotating magnetic field (RMF) of 50 Hz frequency and magnetic induction of 34 mT for controlled time during 6 days of cultivation. The experiments were carried out in the customized RMF exposure system adapted for biological studies. The obtained BC displayed an altered micro-structure, degree of porosity, and water-related parameters in comparison to the non-treated, control BC samples...
2017: Electromagnetic Biology and Medicine
https://www.readbyqxmd.com/read/27779404/rotation-driven-microfluidic-disc-for-white-blood-cell-enumeration-using-magnetic-bead-aggregation
#20
Yiwen Ouyang, Jingyi Li, Doris M Haverstick, James P Landers
We recently defined a magnetic bead-based assay that exploited an agglutination-like response for DNA and applied it to DNA-containing cell enumeration using inexpensive benchtop hardware [ J. Am. Chem. Soc. 2012 , 134 ( 12 ), 5689 - 96 ]. Although cost-efficient, the open-well format assay required numerous manual steps, and the magnetic field actuation scheme was not readily adaptable for integration. Here, we demonstrate a low-cost (<$2 in-lab), higher-throughput "pinwheel assay" platform that relies on a combination of a disposable rotation-driven microdisc (RDM), and a simple bidirectional rotating magnetic field (bi-RMF)...
November 15, 2016: Analytical Chemistry
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