Beam-steering of a single-element nano-antenna with two transferring dielectric flat lenses by Fatma E. Helmy, Ibrahim I. Ibrahim, Amany M. Saleh

“…Abstract A novel idea for mechanical beam-steering based on a single hybrid plasmonic nano-antenna (NA) with transferring lenses is presented in this research. Two inhomogeneous rectangular dielectric flat lenses modelled with different materials are used in the switched-beam nano-antenna (NA) to boost and steer radiation in a specific direction by shifting each lens. …”
Get full text

Optimizing the Design of Surface-Acoustic-Wave Ring Resonator by Changing the Interdigitated Transducer Topology by S. Yu. Shevchenko, D. A. Mikhailenko, B. Nyamweru

“…The data obtained allowed an optimal design of the ring resonator to be proposed: an IDT with rectangular pins without selective withdrawal.Conclusion. …”
Get full text

Improvement of Calculation Technique for Flexible Orthotropic Plates on Elastic Base. Part 2. Calculation Results by O. V. Kozunova

“…The paper presents numerical results of elastic and nonlinear calculations of an isolated rectangular orthotropic plate on an elastic foundation, modeled by an elastic homogeneous isotropic layer rigidly connected to a non-deformable foundation under the action of an external static load, taking into account the own weight of the reinforced concrete plate. …”
Get full text

Heat Transfer Enhancement in Turbine Blade Internal Cooling Channels with Hybrid Pin-Fins and Micro V-Ribs Turbulators by Longbing Hu, Qiuru Zuo, Yu Rao

“…To improve the convective heat transfer in internal cooling channels of heavy-duty gas turbine blades, this study experimentally and numerically investigates the thermal performance of rectangular channels with hybrid pin-fins and micro V-ribs turbulators. …”
Get full text

Ultimate Buckling Limit State Assessments of Perforated Panels in Medium-Range Merchant Ships Based on Updated Classification Rules and Nonlinear Finite Element Analysis by Gitae Kim, Inhwan Cha, Gökhan Tansel Tayyar, Joonmo Choung

“…Additionally, inelastic FEAs were performed on the rectangular, unstiffened panels with various aspect ratios, and it was decided to use the average level of initial imperfection for the inelastic FEAs. …”
Get full text

Comparative evaluation of accuracy of three different electronic apex locators in the presence of various endodonticirrigants: An in vitro study by A. Nagrani, A. B. Tandale, S. Mulay, Sh. Khade, D. Shah

“…The actual working length was determined using a 15 K file and the working model was prepared using Alginate in a rectangular box. The teeth were embedded into the working model and the electronic measurements were made with each electronic apex locator. …”
Get full text

A randomized controlled trial on the effectiveness of low-level laser therapy versus paracetamol-caffeine for pain control during overall orthodontic treatment by Amer Maher Owayda, Mohammad Younis Hajeer, Rabab Al-Sabbagh, Ahamad S. Burhan, Khaldoun Darwich, Ossama Aljabban, Youssef Latifeh

“…Pain scores in the LLLT group were significantly smaller than those of the control group after 48 h of separation and after 24 and 48 h of rectangular archwire insertion. …”
Get full text

O necropolă medio-bizantină cercetată la Nufăru, jud. Tulcea, punctul Trecere bac. Consideraţii arheologice preliminare by Damian, O., Vasile, M., Samson, A.

“…The most frequently occurring grave in the necropolis was the simple rectangular pit. In some of the burials the bodies were entirely or, more often, partially surrounded with broken or flat stones, especially the heads and the lateral parts of the skeleton. …”

Study on the Movement Characteristics of Sediment Body in Mountain Rivers under Excessive Sediment Supply Conditions by ZHOU Qihang, ZHOU Yinjun, JIN Zhongwu, LI Zhijing, NIE Ruihua, LIU Xingnian

“…The results of this study can provide theoretical and technical support for sediment-related disasters control and river government.MethodsAll experiments were conducted in a 10 m long, 0.6 m wide, and 0.8 m deep rectangular glass-walled water recirculating flume at the State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, China. …”
Get full text

Head losses in small hydropower plant trash racks (SHP) by N. Walczak, Z. Walczak, M. Hämmerling, M. Spychała, J. Nieć

“…The present study analyses how the bar shape and the orientation angle of trash racks as well as the accumulated plant debris affect head losses. The results were obtained from laboratory tests. The research examined the impact the inclination angle of trash racks (30°, 60° and 80°) has on head loss values for three different shapes of bars (cylindrical, angled and flat rectangular) and various weight portions of plant debris (0.25, 0.375 and 0.5 kg). …”
Get full text

Between the taiga and the steppe: a new find of the “bears in a sacrificial pose” plaque from the Upper Ob region by Fribus A.V., Grushin S.P.

“…To date, more than 100 rectangular plaques with images of “bears in a sacrificial pose” are known. …”
Get full text

Morphometric Characterization of the Akbaş (Akbash) Turkish Shepherd Dog by Milivoje Urosevic, Darko Drobnjak, Petar Stojic, Yusuf Ziya Oğrak

“…The study consisted of 96 dogs (54 males and 42 females) ranging in age from 2 to 9 years. All dogs were bred in the West Anatolia region of Turkey, around the city of Eskisehir. …”
Get full text

Flexural strength and impact strength of heat-cured acrylic and 3D printed denture base resins- A comparative in vitro study by Mayank Chhabra, M. Nanditha Kumar, K N RaghavendraSwamy, H.M. Thippeswamy

“…Objective: The present study aimed to evaluate and compare the flexural strength and impact strength of heat-cured acrylic/Polymethyl methacrylate (PMMA) denture base resin and 3D printed denture base resin. Methods: 60 rectangular specimens were fabricated from conventional heat-cured acrylic and 3D-printed denture base resins. 15 specimens each of heat-cured acrylic and 3D printed denture base resin were tested for flexural strength and impact strength. …”
Get full text

Target Localization Accuracy of Image Registrations in Cone Beam Computed Tomography‐Guided Stereotactic Body Radiation Therapy for Lung Cancer by Seong Soon Jang, Na‐Young An, Hee Kyung Kim, Youngjun Yang, Gil Ja Huh, Joon Won Jeong

“…The registration axes were divided into 3D translational axes and 6D axes (translational and rotational axes), and the regions were divided into wide rectangular (WR) volume‐of‐interest (VOI) and tumor‐focused (TF) VOI, consisting of the internal target volume (ITV) plus a 1 cm margin. …”
Get full text

Investigating the numerical modeling of the effect of direct and lateral congress overflows in channels on the discharge coefficient by Hamidreza Kayal, Meysam Fazeli

“…For this purpose, three rectangular, trapezoidal, and semicircular overflows have been chosen in such a way that their length is equal. …”
Get full text

Support Patterns of Roadways Under Fractured Surrounding Rocks Based on the Quality Level of Rock Mass by Chi Ma, Peitao Wang, Jiajun Li, Xingwang Fan, Zhihong Dong, Ziming Chen, Xingwu Wang

“…Then, the section convergence characteristics of roadway surrounding rocks were analyzed under the current support scheme using displacement monitoring technology. …”
Get full text

A Monte Carlo Simulation study on the design and optimization of collimators for non-collinear cascade gamma-ray correlation emissions in medical imaging by Leonid Leopold Nkuba, Innocent Lugendo

“…The collimators were optimized by simulating septa thicknesses from 0.2 mm to 1.2 mm, in 0.2 mm increments. …”
Get full text

DISCRETE DEFORMATION WAVE DYNAMICS IN SHEAR ZONES: PHYSICAL MODELLING RESULTS by S. A. Bornyakov, I. A. Panteleev, A. A. Tarasova

“…This method estimates the distribution of components of displacement vectors and strain tensors on the model surface and their evolution over time [Panteleev et al., 2014, 2015].Strain fields and displacements recorded in the optical images of the model surface were estimated in a rectangular box (220.00×72.17 mm) shown by a dot-and-dash line in Fig. 1, A. …”
Get full text

Enhancing dental porcelain repair strength: the impact of chairside plasma surface treatment—an in vitro study by Mehmet Köse, Özlem Çölgeçen

“…Five hundred-fifteen rectangular specimens (12 × 14 × 1 mm) were fabricated from Cr-Co metal alloy (M) by lost wax technique, from zirconia (Z) and feldspathic (F) ceramic using the precision cutting device from CAD-CAM blocks. …”
Get full text

Strength and deformation of encased concrete columns by I- section steel and I- section GFRP subjected to different load conditions by Ban Fadhil Salman, Abbas A. Allawi

“…The research aims to study the influence of using different types of encased I-section (steel and GFRP) in addition to steel bars in the reinforced concrete composite columns. Twelve rectangular reinforced concrete specimens were tested under varying load conditions. …”
Get full text