introduction: water scarcity is one of the major problems for crop production. using drip irrigation as an effective method in the efficient use of water is expanding in arid and semi-arid regions. one of the problems in under pressure irrigation during use of saline, unconventional and waste is emitters clogging. there are several ways to prevent particle deposits in pipes and clogging of emit...

The measurements of radioactive concentrations using portable radiological devices for radiochemistry laboratories at the Al-Tuwaitha nuclear site (section C) were studied, section C consists three laboratories, C1, C2, and C3 used, Redeye device to measure alpha beta emitters, Interceptor™ Specifications detect radioisotopes. results showed presence contamination in Unit distributed over most ...

We investigate the light emission properties of electrical dipole emitters inside 2-dimensional (2D) and 3-dimensional (3D) silicon slot waveguides and evaluate the spontaneous emission enhancement (F(p)) and waveguide coupling ratio (beta). Under realistic conditions, we find that greater than 10-fold enhancement in F(p) can be achieved, together with a beta as large as 0.95. In contrast to th...

One key factor that limits resolution of single-molecule superresolution microscopy relates to the localization accuracy of the activated emitters, which is usually deteriorated by two factors. One originates from the background noise due to out-of-focus signals, sample auto-fluorescence, and camera acquisition noise; and the other is due to the low photon count of emitters at a single frame. W...

we propose a new generation of unbiased (bias-free) antenna-less cw thz photomixer emitters array made of asymmetric msm gratings with subwavelength pitch, operating in optical near-field regime. we take advantage of the size effects in near-field optics and electrostatics to demonstrate the possibility of enhancing the thz power by four orders of magnitude, as compared with a similar array of ...

The efficacy of beta and gamma emitters in reducing clinical and angiographic restenosis in patients with in-stent restenosis has been confirmed by a number of studies. This review is intended to give an overview of the individual trials, summarize pertinent lessons that have been learned and give insight into the future of intracoronary radiation. The encouraging results from the clinical tria...

A new approach (called COBRA) for investigating double beta decay using CdTe semiconductor detectors is proposed. This will allow simultaneous measurements of 5 β−β− and 4 ββ emitters at once. Half-life limits for neutrinoless double beta decay of Cd and Te can be improved by more than one order of magnitude and sensitivities on the effective Majorana neutrino mass of less than 1 eV can be obta...

We present the results of narrow-band and broad-band imaging with the Very Large Telescope ⋆ of the field surrounding the radio galaxy TN J0924–2201 at z = 5.2. Fourteen candidate Lyα emitters with a rest-frame equivalent width of > 20 Å were detected. Spectroscopy of 8 of these objects showed that 6 have redshifts similar to that of the radio galaxy. The density of emitters at the redshift of ...