OBJECTIVES In order to elucidate the influence of sympathetic nerves on lumbar radiculopathy, we investigated whether sympathectomy attenuated pain behaviour and altered the electrical properties of the dorsal root ganglion (DRG) neurons in a rat model of lumbar root constriction. METHODS Sprague-Dawley rats were divided into three experimental groups. In the root constriction group, the left...

We explore air invasion in an initially water-filled dead-end compliant microchannel containing a constriction. The phenomenon is driven by the pervaporation of liquid present channel through surrounding medium. penetration intermittent, jerky, and characterised stop-and-go dynamics as bubble escapes demonstrate that this sequence arrest jump due to elastocapillary coupling between air-liquid i...

one of the most fundamental features of digital image and the basic steps in image processing, analysis, pattern recognition and computer vision is the edge of an image where the preciseness and reliability of its results will affect directly on the comprehension machine system made objective world. several edge detectors have been developed in the past decades, although no single edge detector...

Abstract The results of experimental studies and numerical simulation the flow structure in separation region downstream an asymmetric narrowing smooth canal that simulates 70% one-sided stenosis artery are presented. Reynolds number was equal to 1800. instantaneous velocity vector fields were measured using SIV technique. solution obtained by large eddy (LES) method. Setting disturbances close...

Quantum point contacts are cornerstones of mesoscopic physics and central building blocks for quantum electronics. Although the Fermi wavelength in high-quality bulk graphene can be tuned up to hundreds of nanometres, the observation of quantum confinement of Dirac electrons in nanostructured graphene has proven surprisingly challenging. Here we show ballistic transport and quantized conductanc...

There are two types of Caesarean section (CS). An important distinction lies in the type of incision made on the uterus, apart from the incision on the skin. According to type of incision, these two types includes the classical Caesarean section (CS) and lower uterine segment section (LSCS).The classical Caesarean section involves a longitudinal incision in upper uterine segment which allows a ...

introduction: objective: this study aimed to assess the possible variations in root canal anatomy and topography of the apices of first and second maxillary molars. materials and methods: a total of 67 first and second maxillary permanent molars were collected. access cavity was prepared and 2% methylene blue was injected. the teeth were demineralized by 5% nitric acid and cleared with methyl s...