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Mercedes Benz pattern craniosynostosis. The complex craniosynostoses, which include all nonsyndromic multiple sutural fusions, represent a small fraction of patients presenting with craniosynostosis.
Among these are a trisutural fusion, dubbed the ” Mercedes Benz pattern,” involving the sagittal and both lambdoid sutures. The purpose of this report is to review the authors’ series of this unusual form of craniosynostosis, to identify associated anomalies, and to assess treatment outcomes. The authors conducted a retrospective clinical outcome assessment of all patients presenting with Mercedes Benz pattern craniosynostosis. Growth was assessed by direct anthropologic measurements, and significance was assessed by the t test.
Over a year period, 11 of patients presenting with craniosynostosis were identified with Mercedes Benz pattern synostosis 1. Three patients had additional sutural involvement and two had identifiable genetic syndromes.
Seven of 11 64 percent had cerebellar tonsillar herniation on preoperative imaging, and four symptomatic patients 36 percent have required Chiari decompressions. Three patients have required graj than one remodeling procedure. Serial postoperative anthropologic measurements identified progressive brachycephaly, with diminished growth in both head circumference and skull length mean follow-up, 3. Cognitive function was grossly leamdro, except for one syndromic patient. Despite fusion of the sagittal suture, the surgical treatment for Mercedes Benz pattern craniosynostosis should include skull lengthening, not reduction.
The authors’ findings for diminished postoperative growth suggest that an overcorrection be considered. Fourth or fifth sutural involvement correlated with additional corrections. Given the observed high incidence for symptomatic cerebellar tonsillar herniation, routine magnetic resonance evaluations are recommended for affected individuals. In this paper we introduce a three-dimensional version of the Mercedes -Benz model to describe water molecules.
Graan this model van der Waals interactions and hydrogen bonds are given explicitly through a Lennard-Jones potential zzanoni a Gaussian orientation-dependent terms, respectively. At low temperature the model freezes forming Ice-I and it reproduces the main peaks of the experimental radial distribution function of water. In addition to these structural properties, the model also leaandro the thermodynamical anomalies of water: The anomalous density profile, the negative thermal expansivity, the large heat capacity, and the minimum in the isothermal compressibility.
Bilambdoid and posterior sagittal synostosis: A consistent pattern of craniosynostosis in the sagittal and bilateral lambdoid sutures is described in three patients.
The external cranial lewndro associated with fusion of these sutures produces a characteristic triradiate, or ” Mercedes Benz,” appearance to the posterior skull. Locally marked growth restriction is evident in the posterior fossa with compensatory secondary expansion of the anterior fossa manifesting a degree of frontal bossing which mimics bicoronal synostosis. Although this appearance could lead to inadvertent surgery in the frontal region, attention to the occipital region with wide early suture excision and vault shaping is indicated.
Three-dimensional ” Mercedes -Benz” model for water. Photo of a Mercedes -Benz B fueling protocols, with an eye toward optimizing the refueling station’s customer interface, making the. An improved thermodynamic perturbation theory for Mercedes -Benz water.
We previously applied Wertheim’s thermodynamic perturbation theory for associative fluids to the simple Mercedes -Benz model of water. We found that the kanzana reproduced well grzn physical properties of hot water, but was less successful in capturing the more structured hydrogen bonding that occurs in cold water.
Here, we propose an improved version of the thermodynamic perturbation theory in which the effective density of the reference system is calculated self-consistently.
The new theory grzn a significant improvement, giving good agreement with Monte Carlo simulations oa the model, and predicting key anomalies of cold water, such as minima in the molar volume and large heat capacity, in addition to giving good agreement with the isothermal compressibility and thermal expansion coefficient.
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We study water that is confined within small geometric spaces. For MB water molecules between two planes separated by a distance d, we explore the structures, hydrogen bond networks, and thermodynamics as a function of d, lq T, and water chemical potential mu.
We find that squeezing the planes close enough together leads to a vaporization of waters out of the cavity. This vaporization transition has a corresponding peak in the heat capacity of the water. We also find that, in small pores, hydrogen bonding is not isotropic but, rather, it preferentially forms chains along the axis of the cavity. This may be relevant for fast proton transport in pores. Our simulations show oscillations in the forces between leandrp inert plates, due to water structure, even for plate separations of water diameters, consistent with experiments by Israelachvili et al.
Finally, we find that confinement affects water’s heat capacity, consistent with recent experiments of Leandeo et al. Federal Register, Poisson equation for the Mercedes diagram in string theory at genus one. The Mercedes diagram has four trivalent vertices which are connected by six links such that they form the edges of a tetrahedron. We obtain a modular invariant Poisson equation satisfied by the Mercedes diagram, where the source terms involve one- and two-loop Feynman diagrams.
Gas-containing gallstones are well-known in vitro. The typical triradiate arrangement of fissures filled with gas, first described on abdominal plain films, was named by Meyers the ” Mercedes -Benz” sign.
Msnzana sign is absent of the recent literature. We report a case where gas was the only CT sign suggesting the presence of gallstones in the gallbladder.
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Computed tomography manifestation of a triple-barreled aortic dissection: Computed tomographic CT findings of a rare case of triple-barreled aortic dissection was described. CT demonstrated the extent of dissection, a communication between two channels, and three lumens separated by the intimal flap and a thin undetached tunica media, resembling a Mercedes -Benz mark.
Ring versus ‘ Mercedes -Benz’ cartilage-perichondrium graft tympanoplasty in management of pars tensa aanoni. To compare anatomical and audiological outcomes of ring versus ‘ Mercedes -Benz’ cartilage-perichondrium graft tympanoplasty in patients with pars tensa cholesteatoma. Otolaryngology department, Tanta University Hospital, Egypt. Over three years, 60 ears in 60 patients underwent surgery for either sinus or tensa retraction cholesteatoma, reconstructed using either a ring-shaped 30 ears or Mercedes -Benz symbol shaped 30 ears cartilage-perichondrium graft, with at least two years’ follow up.
Post-operative drum perforation and retraction, cholesteatoma residue and recurrence, middle-ear leanxro, and hearing acuity were monitored. Anatomical outcomes were equivalent in both groups, but slightly better in the Mercedes group. Hearing improved significantly in both groups pre- vs post-operative resultsbut significantly more so in the ring group.
Within-group hearing outcomes were unaffected by cholesteatoma type or tympanoplasty type. The Mercedes -Benz technique may be superior to the ring technique in preventing neodrum retraction. However, the ring graft technique had better hearing outcomes, perhaps due to its more physiological design. Cost, weight and lead time impacts of a Mercedes -Benz ‘Sensormat’ type occupant detection system.
This summary report is based, in part, on the findings contained in Contract No. Cost analysis of the Mercedes -Benz occupant detection system for air bag shut-off. The objective of this project is to develop the variable manufacturing costs and lead time estimates of lfandro “occupant detection system for air bag shut off”.
The Mercedes -Benz system was used as a base for developing this data.
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The system consists of Worst theft losses are for Mercedes model; 2 of 3 worst are for acura. The Highway Loss Data Institute’s annual list of vehicles with worst theft losses has Mercedes S class heading the list of passenger vehicles with the highest insurance losses for theft.
Overall losses for this car are 10 times higher than the averag Experimental data were obtained in dynamometer tests of the Mercedes Benz Model OM diesel engine to determine fuel consumption and emissions hydrocarbon, carbon monoxide, oxides of nitroge, and smoke at steady-state engine-operating modes.
Mercedes -Benz water molecules near hydrophobic wall: Integral equation theories vs Monte Carlo simulations. Associative version of Henderson-Abraham-Barker theory is applied for the study of Mercedes -Benz model of water near hydrophobic surface. We calculated density profiles and adsorption coefficients using Percus-Yevick and soft mean spherical associative approximations.
The results are compared with Monte Carlo simulation data. It is shown that at higher temperatures both approximations satisfactory reproduce the simulation data. For lower temperatures, soft mean spherical approximation gives good agreement at low and at high densities while in at mid range densities, the prediction is only qualitative. The formation of a depletion layer between water and hydrophobic surface was also demonstrated and studied. Ice polyamorphism in the minimal Mercedes -Benz model of water.
We investigate ice polyamorphism in the context of the two-dimensional Mercedes -Benz model of water. We find a first-order phase transition between a crystalline phase and a high-density amorphous phase.
Furthermore, we find a reversible transformation between two amorphous structures of high and low manzaba however, we find this to be a continuous and not an abrupt transition, as the low-density leanvro phase does not show structural stability. We discuss the origin of this behavior and its implications with regard to the minimal generic modeling of polyamorphism. The concept and the governing equations of multiscale coupling together with the results of the two-way coupling implementation are reported.
The sensitivity of the multiscale model for obtaining macroscopic and microscopic parameters of the system, such as macroscopic density and velocity fluctuations, radial distribution and velocity autocorrelation functions of MB particles, is evaluated.
Critical issues for extending the current model to lw systems are discussed. Analytical model for three-dimensional Mercedes -Benz water molecules.
We developed a statistical model which describes the manxana and volumetric properties of water-like molecules. A molecule is presented as a three-dimensional sphere with four hydrogen-bonding arms.
Each water molecule interacts with its neighboring waters through a van der Waals interaction and an orientation-dependent hydrogen-bonding interaction.
This model, which is largely analytical, is a variant of a model developed before for a two-dimensional Mercedes -Benz model of water. Gtan explored properties such as molar volume, density, heat capacity, thermal expansion coefficient, and isothermal compressibility as a function of temperature and pressure.
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We found that the volumetric and thermal properties follow the same trends with temperature as in real water and are in good general agreement with Monte Carlo simulations, including the density anomaly, the minimum in the isothermal compressibility, and the decreased number of hydrogen bonds upon increasing the temperature.
Hydrophobicity within the three-dimensional Mercedes -Benz model: We use lesndro three-dimensional Mercedes -Benz model for water and Monte Carlo simulations to study the structure and thermodynamics of the hydrophobic interaction.
Radial distribution functions are used to classify different cases of the interaction, namely, contact configurations, solvent separated configurations, and desolvation configurations. The temperature dependence of these cases is shown to be in qualitative agreement with atomistic models of water.