نتایج جستجو برای: except for fiber width and lumen width
تعداد نتایج: 19069587 فیلتر نتایج به سال:
We give a simple proof that the straightforward generalisation of clique-width to arbitrary structures can be unbounded on structures of bounded tree-width. This can be corrected by allowing fusion of elements.
The first error-free data transmission beyond 1 km of multi-mode fiber at bit-rates exceeding 20 Gb/s is demonstrated using a high modulation bandwidth, quasi-single mode (SMSR~20 dB) 850 nm VCSEL. A VCSEL with small ~3 μm aperture shows quasi-single mode operation with a narrow spectral width. The top mirror reflectivity of the VCSEL is optimized for high speed and high output power by shallow...
We present the first experimental demonstration of a resolvable mode structure with spacing c/2nL in the RF spectra of ultralong Raman fiber lasers. The longest ever demonstrated laser cavity (L=84 km), RF peaks of ~100 Hz width and spacing ~1 kHz have been observed at low intracavity powers. The width of the peaks increases linearly with growing intracavity power and is almost independent of f...
Picosecond laser pulse propagation in monomode optical fiber is demonstrated and investigated by numerically simulation in this paper. The numerical simulation is done by nonlinear Schrödinger equation with the aid of Mathlap program. The results show that self phase modulation (SPM) leads to broadening the spectral width from 5nm to 38nm after 50m of the fiber length and accompanied by tempora...
this experiment was conducted to investigate the effect of thyme essential oil and powder in comparison to antibiotic on performance of meat type quails, in a completely randomized design with 6 treatments, 4 replicate. the dietary treatments consisted of the basal diet without any added compounds (control), 100mg virginiamycin/kg, 0.1 or 0.2% thyme powder and 100 or 200 mg thyme essential oil/...
abstract: in this thesis, we focus to class of convex optimization problem whose objective function is given as a linear function and a convex function of a linear transformation of the decision variables and whose feasible region is a polytope. we show that there exists an optimal solution to this class of problems on a face of the constraint polytope of feasible region. based on this, we dev...
asymmetric membranes are widely used in many industrial membrane separation processes. the major advantage of membrane filtration over the conventional process is its ability to remove a wider spectrum of particles without using any chemicals. hollow fiber configuration offer many advantages over flat-sheet or tubular membranes. the spinning process of hollow fiber may look simple, yet it is te...
If a graph has no induced subgraph isomorphic to any graph in a finite family {H1, . . . ,Hp}, it is said to be (H1, . . . ,Hp)-free. The class of H-free graphs has bounded clique-width if and only if H is an induced subgraph of the 4-vertex path P4. We study the (un)boundedness of the clique-width of graph classes defined by two forbidden induced subgraphs H1 and H2. Prior to our study it was ...
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