We have obtained NIR spectral line maps of a limited region around the Orion Bar ionization front using the red and blue grisms of SOFI on the ESO NTT telescope. The wavelength range covered was from 0.95 to 2.3 µm. In addition to many well studied features, we detected two lines at 1.07 and 1.17 µm due to recombination to CI which have excitations above 60000 cm −1. We also observe several fea...

Gasoline compression ignition in diesel engines has been proposed order to meet increasingly stringent emission regulations without sacrificing efficiency. In this study, a six-cylinder heavy-duty engine was operated mixing controlled gasoline mode investigate the influence of fuels and injection strategies on combustion characteristics, emissions, thermal efficiencies. Fuels, including ethanol...

Loading conditions and complex geometry have led the cylinder heads to become the most challenging parts of diesel engines. The aim of this study is to compare the distribution of temperature and stress in the aluminum and magnesium cylinder heads under thermo-mechanical loads. The three-dimensional model of the cylinder heads was simulated in abaqus software and a two-layer viscoplasticity mod...

magnetic field effects on the elastic response of polymeric piezoelectric cylinder reinforced with carbon nanotubes (cnts) is studied. the cylinder is subjected to internal pressure, a constant electric potential difference at the inner and outer surfaces, thermal and magnetic fields. the mori-tanaka model is used for obtaining the equivalent material properties of the cylinder. based on the ch...

The $T\bar T$ deformation is a solvable irrelevant whose properties depend on the sign of parameter $\mu$. In particular, T$-deformed CFTs with $\mu<0$ have been proposed to be holographically dual Einstein gravity where metric satisfies Dirichlet boundary conditions at finite cutoff surface. this paper, we put forward holographic proposal for $\mu>0$, in which case bulk geometry constructed by...

Gaseous fuels, e.g., natural gas, biogas, have several advantages over liquid fuels owing to their favorable physical and chemical properties, lower carbon numbers in the fuel composition no issues regarding evaporation. The present study investigated compressed gas (CNG) port injection (PFI) direct (DI) systems compared gasoline (GDI) cases a spark ignition (SI) naturally aspirated single cyli...

In the semiconductor industry, hydrogen is used with many other hazardous and dangerous substances flammable, toxic, corrosive properties. order to safely handle them, convenient-to-use gas cabinets are often required. As known well, highly flammable explosive, risk analysis needs use in cabinets. this study, overpressure impact according various cabinet conditions were measured when leaks cabi...

Abstract We initiate the study of T ¯ -like irrelevant solvable deformations in quantum field theory with boundaries and defects. For this purpose, we employ a general formali...

This problem was suggested by Bradley Klee. For the related case of one cylinder rolling inside another, see [1]. When one cylinder is directly above the other, we define the line of contact of the lower cylinder, 1, with the horizontal plane to be the z-axis, at x = y = 0. Then, the condition of rolling without slipping for the lower cylinder is that when it has rolled (positive) distance x1, ...

The key technology of the prosthetic knee is to simulate torque and angle biological knee. In this work, we proposed a novel operated in semi-active mode. structure with ball-screw driven by motor passive hydraulic damping cylinder was presented. A four-bar linkage adapted track instantaneous center motion human mathematical models active were established angle. results show that symmetry index...