We consider the stochastic Stokes’ drift of a flexible dumbbell. The dumbbell consists of two isotropic Brownian particles connected by a linear string with zero natural length, and is advected by a sinusoidal wave. We find an asymptotic approximation for the Stokes’ drift in the limit of a weak wave, and find good agreement with the results of a Monte Carlo simulation. Interestingly, the depen...

We report an extremely rare case with bilateral and symmetric dumbbell ganglioneuromas of the cervical spine in an elderly patient. A 72-year-old man came by ambulance to our hospital due to progressive incomplete paraplegia. Magnetic resonance imaging demonstrated bilateral symmetric dumbbell tumors at the C1/2 level. We performed total resection of the intracanalar tumor, aiming at complete d...

Within the mode-coupling theory (MCT) for the evolution of structural relaxation in glass-forming liquids, correlation functions and susceptibility spectra are calculated characterizing the rotational dynamics of a top-down symmetric dumbbell molecule, consisting of two fused hard spheres immersed in a hard-sphere system. It is found that for sufficiently large dumbbell elongations, the dynamic...

Background. Giant dumbbell-shaped tumors are very rare and characterized by intraand extraspinal propagation of different dimensions. In thoracal localization, invasive growth can lead up to rib and vertebra erosion. Case report. We presented a 54-year-old woman with a giant dumbbell schwannoma in the posterior mediastinum. The tumor was removed by the posterior approach with hemilaminectomy an...

Spinach leaf disks were cultured for 5 days in low-intensity green light and then were transferred to high-intensity white light. Harvests over the next 16 h established that cell area increased by about 80% and chloroplast number per cell increased by about 65%, while the percentage of dumbbell-shaped chloroplasts per cell decreased by 65%. Freeze-etch replicas of fixed and unfixed leaf disks,...

Objectives: To compare two different dual-curing resins cement interfaces between low translucency and high translucency lithium disilicate glass-ceramics in vitro. M~aterials and Methods: ISO 11405 was modeled by using a standardized dumb-bell test to compare the tensile bond strength of two different resin cement interfaces ofa low translucency lithium disilicate ceramic to a high translucenc...

Chordomas are rare tumors of notochordal tissue remnants and most frequently affect the sacrum and skull base. We report a case of a 58-year-old woman having cervical chordoma causing related symptoms for 5 years. MRI showed a dumbbell-shape mass with heterogeneous enhancement at C2 and C3 on postcontrast images, mimicking neurogenic tumor. Chordoma should be included in the differential diagno...

We present the case of a 67-year-old male smoker with a posterior mediastinal hemangioma. Radiological findings revealed a dumbbell-shaped tumor with a neuroforaminal extension in the right paravertebral space. Under the preoperative diagnosis of a neurogenic tumor, surgery was performed using a combined anterior and posterior approach. During the thoracotomy, the tumor was found to be a hemang...