In this paper, a double E-shaped symmetric split ring resonators metamaterial inspired triple band microwave absorber (MA) for EMI shielding and stealth applications in C X is presented. The proposed comprises E shaped with two modified resonators-based copper separated by FR-4 dielectric layer thickness of 1.6 mm back annealed 0.035 an electrical dimension 0.179λ × 0.179λ, λ computed at the frequency 5.376 GHz. simulated results derived from CST Microwave Studio simulator show that there...

Pleurotus ostreatus is the second cultivated and most popular edible mushroom after Agaricus bisporus worldwide. As dietary supplements, nutraceuticals like that go beyond usual health benefits of mushrooms are becoming more popular. The objective this study to put together a summary nutrition information link it possible health-improving effects eating oyster mushrooms. This review based on secondary data from 102 published articles about P. ostreatus. All papers were examined following...

Semantic segmentation of high-resolution images from remote sensing is crucial across various sectors. However, due to limitations in computational resources and the complexity network architectures, many sophisticated semantic models struggle with efficiency real-world applications, leading an interest developing lightweight model like borders. These often employ a dual-branch structure, which balances processing speed performance effectively. Yet, this design typically falls short...

A compact metamaterial inspired antenna operate at LTE, Bluetooth and WiMAX frequency band is introduced in this paper. For the lower band, design utilizes an outer square metallic strip forcing patch to radiate as equivalent magnetic-current loop. upper another magnetic current loop created by adding structure near feed line on patch. The dimension of 42 × 32 mm2 compatible wireless devices. Finite integration technique based CST Microwave Studio simulator has been used numerical...

A miniaturized antenna employing a negative index metamaterial with modified split-ring resonator (SRR) and capacitance-loaded strip (CLS) unit cells is presented for Ultra wideband (UWB) microwave imaging applications. Four left-handed (LH) (MTM) are located along one axis of the as radiating element. Each cell combines to obtain design architecture that simultaneously exhibits both permittivity permeability, which ensures stable refractive improve performance imaging. The structure,...

The paper reveals the design of a unit cell metamaterial that shows more than 2 GHz wideband near zero refractive index (NZRI) property in C-band region microwave spectra. two arms were splitted such way forms near-pi-shape structure on epoxy resin fiber (FR-4) substrate material. reflection and transmission characteristics achieved by utilizing finite integration technique based simulation software. Measured results presented, which complied well with simulated results. was then applied to...

The aim of this paper is to introduce a compact double-negative (DNG) metamaterial that exhibits negative refractive index (NRI) bandwidth more than 3.6 GHz considering the frequency from 2 14 GHz. In framework, two arms designed unit cell are split in way forms Modified-Z-shape structure FR-4 substrate material. finite integration technique (FIT)-based Computer Simulation Technology (CST) Microwave Studio applied for computation, and experimental setup measuring performance performed inside...

Due to their excellent heat resistance, superalloys are used predominantly in the manufacturing of engine parts and accessories for aircraft aerospace equipment. The Monte Carlo simulation (MCNP-5) code was performed estimate mean track length incident photons inside six different alloys. Then, based on simulated length, other important γ-ray shielding parameters were calculated. In this study, highest mass attenuation coefficient obtained alloys encoded MAR-302 MAR-247 varied range...

A viable hydrothermal technique has been explored for the synthesis of copper doped Zinc oxide nanoparticles (Cu-doped ZnO-NPs) based on precursor’s mixture Copper-II chloride dihydrate (CuCl 2 .2H O), (ZnCl ), and potassium hydroxide (KOH). X-ray diffraction (XRD) reported hexagonal wurtzite structure synthesized Cu-doped ZnO-NPs. The surface morphology is checked via field emission scanning electron microscopy (FE-SEM), whereas, elemental compositions samples were confirmed by Raman,...

Copper oxide and Zinc (Zn)-doped nanostructures (CuO-NSs) are successfully synthesized by using a hydrothermal technique. The as-obtained pure Zn-doped CuO-NSs were tested to study the effect of doping in CuO on structural, optical, antibacterial properties. band gap is calculated Tauc plot. Our results have shown that reduces with addition Zinc. Optimization processing conditions concentration precursors leads formation pine needles sea urchin-like nanostructures. properties obtained...

Abstract Nuclear radiation shielding capabilities for a glass series 20Bi 2 O 3 − xPbO (80 2x)B xGeO (where x = 5, 10, 20, and 30 mol%) have been investigated using the Phy-X/PSD software Monte Carlo N-Particle transport code. The mass attenuation coefficients (μ m ) of selected samples estimated through XCOM dependent program MCNP-5 code in photon-energy range 0.015–15 MeV. So obtained μ values are used to calculate other γ-ray parameters such as half-value layer (HVL), mean-free-path...

Environmental problems with chemical and biological water pollution have become a major concern for society. Providing people safe affordable is grand challenge of the 21st century. The study investigates photocatalytic degradation capabilities hydrothermally prepared pure Cu-doped ZnO nanoparticles (NPs) elimination dye pollutants. A simple, cost-effective hydrothermal process employed to synthesize NPs. activity synthesized NPs tested by using methylene blue (MB) dye. In addition,...

The disease may be an explicit status that negatively affects human health. Cardiopathy is one of the common deadly diseases attributed to unhealthy habits compared alternative diseases. With help machine learning (ML) algorithms, heart can noticed in a short time as well at low cost. This study adopted four models, such random forest (RF), decision tree (DT), AdaBoost (AB), and K-nearest neighbor (KNN), detect disease. A generalized algorithm was constructed analyze strength relevant...

A quadruple band wide angle polarization insensitivity metamaterial absorber based on double elliptical resonator structure for electromagnetic interference (EMI) shielding applications in microwave regime has been considered this paper. The proposed (MA) unit cell comprises of a top metallic resonating patch and ground copper, both which are separated by an inexpensive FR-4 substrate with thickness 0.0185λ electrical size 0.138λ, at lowest resonance frequency. MA demonstrates the peak...

We created an ultra-thin, triple-band incident angle-insensitive perfect metamaterial absorber (MMA) with a metallic patch and continuous metal ground isolated by central dielectric substrate. The top patch, placed across the edges of 0.58 mm thickness Rogers RO4003C (lossy) substrate, forms bulk projected absorber’s ultra-thin layer. Nonetheless, absorption is exceedingly strong, covering C-band, X-band K-band reaching levels 97.8%, 99.9%, respectively, under normal even oblique (0° to 45°)...

It is important in the rising demands to have efficient anomaly detection camera surveillance systems for improving public safety a complex environment. Most of available methods usually fail capture long-term temporal dependencies and spatial correlations, especially dynamic multi-camera settings. Also, many traditional rely heavily on large labeled datasets, generalizing poorly when encountering unseen anomalies process. We introduce new framework address such challenges by incorporating...

A compact antenna is proposed using planar‐patterned metamaterial structures for ultra‐wideband applications. This consists of four unit cells that simultaneously show both negative permeability and permittivity on the triangular patch three rectangular slots partial ground plane fed with a microstrip line. It has wide bandwidth from 3.07 to 19.91 GHz voltage standing wave ratio (VSWR) <2 an average gain 5.62 dBi peak 8.57 because structures. Good agreement between computations...

This paper presents a negative index metamaterial incorporated UWB antenna with an integration of complementary SRR (split-ring resonator) and CLS (capacitive loaded strip) unit cells for microwave imaging sensor applications. consists four along one axis, where each cell incorporates pair. enables design layout that allows both value permittivity permeability simultaneous, resulting in durable to enhance the performance The proposed MTM was designed fabricated on FR4 substrate having...

A new triangular metamaterials (TMMs) is designed for electromagnetic (EM) absorption reduction at microwave frequencies in this paper.The of EM with a TMMs attachment investigated research.The finite-difference time-domain method lossy-Drude model adopted investigation.The presented and the effects position, distance, size are analyzed.TMMs have achieved 1.0923 W/kg SAR 1 gm which 45.44% initial value case SAR.

This paper presents the design and analysis of a novel split-H-shaped metamaterial unit cell structure that is applicable in multi-band frequency range exhibits negative permeability permittivity those bands. In basic design, separate split-square resonators are joined by metal link to form an H-shaped structure. Moreover, comparison 1 × array 2 structures configurations were performed. All these demonstrate operating frequencies (S-band, C-band, X-band Ku-band) with double-negative...

Abstract In this paper, a wide bandwidth angle- and polarization-insensitive symmetric metamaterial (MM) absorber for X Ku band is proposed. For both normal oblique incidence in TEM mode, the proposed unit cell shows high absorption at different polarizing angles due to structural symmetry. A four-fold resonator was introduced enhance bandwidth. The performance of determined by full-wave simulations measurements. simulated measured absorptions are almost similar with 94.63%, 95.58%, 97%...

Abstract The principle purpose of this study was to produce a horizontally inverse double L-shaped metamaterial that applicable for triple-band applications and exhibited negative permittivity permeability in the resonance frequencies. structure had square split ring resonator on outer side etched Rogers RT5880 dielectric substrate material. size unit cell 10 × 10 mm2. CST Microwave Studio electromagnetic simulator utilized design analysis proposed metamaterial. Analyses comparisons were...

Elastic moduli were theoretically computed using the Makishima–Mackenzie model for SiO2–Na2O–CaO glasses doped with Sb2O3 contents. The calculated elastic (Young’s, bulk, shear, and longitudinal modulus) observed to increase an in microhardness showed increase, while Poisson’s ratio decreased rise of In addition, gamma-ray neutron shielding parameters evaluated investigated glasses. linear attenuation coefficient (LAC) was simulated Monte Carlo N-particle transport code (MCNP-5). Other...