As a key component of drip irrigation system, the performance emitters is determined by flow channel structures and parameters. In this paper, novel Y-shaped labyrinth-channel emitter was proposed, influence hydraulic researched under different waist-arc angles (α) ratios crown height to chord length (a:b). The characteristics energy dissipation mechanisms water in were analyzed using fluid dyn...

Abstract In order to improve the accuracy of calculation method bearing capacity prefabricated pier connected by grouting bellows, formula ultimate assembled bridge piers with corrugated pipe connection under action bi-directional compression and bending is deduced. Firstly, quasi-static testing cast-in-place unidirectional loading are introduced, capacities compared. Secondly, according arrang...

in this paper, a new design of optical channel drop filter based on two- dimensional photonic crystal ring resonators with triangular lattice is proposed. the rods of this structure is silicon with the refractive index nsi=3.46 and the surrounding environment is air with the refractive index of nair=1.the widest photonic band gap obtains for the filling ratio of r/a = 0.2. the filter’s transmis...

Utilization of solar energy is increasing in different states the world, and sun regarded as largest source continuous coherent energy. In present study, a novel configuration v-corrugated collector with triangular channels for domestic water heating has been analytically investigated. A mathematical model based on effectiveness-NTU method established to thermally examine collector. Additionall...

in this paper, some elementary operations on triangular fuzzynumbers (tfns) are defined. we also define some operations on triangularfuzzy matrices (tfms) such as trace and triangular fuzzy determinant(tfd). using elementary operations, some important properties of tfms arepresented. the concept of adjoints on tfm is discussed and some of theirproperties are. some special types of tfms (e.g. pu...

Transhiatal oesophagectomy is an established technique for resection of tumours of the lower oesophagus and oesophagogastric junction. The authors describe a previously unreported serious complication associated with placement of a corrugated neck drain during transhiatal oesophagectomy. A 63 year old man was admitted for transhiatal oesophagectomy for resection of a lower third oesophageal tum...

Corrugated waveguide transmission lines are in use to transmit high power mm-wave radiation from gyrotrons to the plasma for electron cyclotron plasma heating in tokamaks such as ITER. The coupling efficiency of the gyrotron output radiation formed as a quasi-Gaussian beam to the waveguide mode is a critical issue. A hyperbolic corrugated horn serves as a converter of the TEM00 Gaussian mode to...

In this letter, we propose the use of the newly developed corrugated quantum well infrared photodetectors ~C-QWIPs! for polarization detection. The corrugated structure, which serves as an optical coupler as well as the polarization-sensitive component, is in this case directly created into the active region of the QWIP, therefore dispensed with the need of an external polarizer. Moreover, four...