The work aims to design a trilayer composite dedicated electromagnetic shielding over large frequency range, from 1 Hz 20 GHz. Analytical and numerical models are used determine the effectiveness (SE) of this in case planar shield. shield is constituted support layer, magnetic conductive layer. Two possible designs considered. To simplify calculation, homogenization method Artificial Material S...

Shield construction has the advantages of stable driving speed, saving manpower, and being able to carry out in complex strata, which been more widely used. In process shield construction, there is a gap between body segment, easy cause ground settlement when grouting speed cannot keep up. This paper summarizes common methods predict surface settlement, analyzes causes lists an engineering case...

Defects in head and neck after tumor resection often provide significant functional and cosmetic deformity. The challenge for reconstruction is not only the aesthetic result, but the functional repair. Cancer may involve composite elements and the in sano resection may lead to an extensive tissue defect. No prospective randomized controlled studies for comparison of different free flaps are ava...

This paper proposes a multiband handset antenna combining PIFA and novel slots on radiating patch of PIFA for mobile applications. Two slots were introduced in order to embody 900 and 1800 MHz band. Radiation patterns are computed in free space as well as in the presence of head. Specific Absorption Rate (SAR) of slotted PIFA antenna is calculated and is compared with the SAR limits in the safe...

To create a comprehensive dataset of peripheral dose (PD) measurements from a new generation of linear accelerators with and without the presence of a newly designed fetal shield, PD measurements were performed to evaluate the effects of depth, field size, distance from the field edge, collimator angle, and beam modi-fiers for common treatment protocols and modalities. A custom fetal lead shiel...

Trace-element and Nd-Sr-Pb isotopic data for mafic lavas from the Mascarene island of Mauritius reveal that the shield-stage Older Series (with 143Nd/144Nd = 0.512827 to 0.512853, 87Sr/86Sr = 0.70412 to 0.70433, and 206Pb/204Pb = 18.771 to 19.024) is geochemically very similar to the shield-building lavas of the younger island of Réunion. The post-shield Intermediate and Younger Series lavas of...

[1] We measured He, Sr, Nd, Pb, and Os isotope ratios and major and trace element concentrations in stratigraphically and paleomagnetically controlled shield-stage lavas from Kauai, Hawaii. The range of He/He ratios (17–28 RA) from Kauai is similar to that reported from Loihi and thus challenges the prevailing notion that high He/He ratios are restricted to the preshield stage of Hawaiian magma...

Conformal Radiation Therapy (3DCRT) and Intensity Modulated Radiotherapy (IMRT) improve the relationship between tumor control and complications in normal tissue. However, these techniques may cause an increase of the normal tissue volume irradiated with low doses or an increase of the doses outside the beam. The aim of this work was to measure and compare the scatter dose to the contralateral ...