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1,385 Results Found

  • Letter
  • Open Access
13 Citations
3,680 Views
13 Pages

25 September 2020

Image semantic segmentation is one of the key problems in computer vision. Despite the enormous advances in applications, almost all the image semantic segmentation algorithms fail to achieve satisfactory segmentation results due to lack of sensitivi...

  • Article
  • Open Access
9 Citations
3,433 Views
16 Pages

Removal of Hydrogen Sulfide and Ammonia Using a Biotrickling Filter Packed with Modified Composite Filler

  • Yue Wang,
  • Ruoqi Cui,
  • Hairong Jiang,
  • Miao Bai,
  • Kaizong Lin,
  • Minglu Zhang and
  • Lianhai Ren

5 October 2022

The purpose of this study was to evaluate the performance of laboratory-scale biotrickling filters (BTFs) packed with composite filler and pine bark filler under different operating conditions in purifying mixed gas containing H2S and NH3. The compos...

  • Article
  • Open Access
19 Citations
5,208 Views
21 Pages

11 May 2017

Structural health monitoring (SHM) of aircraft composite structure is helpful to increase reliability and reduce maintenance costs. Due to the great effectiveness in distinguishing particular guided wave modes and identifying the propagation directio...

  • Article
  • Open Access
948 Views
12 Pages

28 August 2025

Air filtering is one of the most effective methods to enhance indoor air quality, and the filtration performance and usage form are the main parameters that affect its widespread promotion. In this paper, we compare the filtration performance of sing...

  • Article
  • Open Access
11 Citations
6,811 Views
21 Pages

The battery State of Charge (SoC) estimation is one of the basic and significant functions for Battery Management System (BMS) in Electric Vehicles (EVs). The SoC is the key to interoperability of various modules and cannot be measured directly. An i...

  • Article
  • Open Access
2 Citations
2,945 Views
27 Pages

29 June 2022

Downgoing/upgoing P/S-wave decomposition of ocean-bottom seismic (OBS) multicomponent data can help suppress the water-layer multiples and cross-talks between P- and S-waves, and therefore plays an important role in seismic migration and construction...

  • Article
  • Open Access
7 Citations
3,987 Views
11 Pages

Flexible and Lightweight Carbon Nanotube Composite Filter for Particulate Matter Air Filtration

  • Megha Chitranshi,
  • Daniel Rui Chen,
  • Peter Kosel,
  • Marc Cahay and
  • Mark Schulz

21 November 2022

Particulate Matter (PM) has become an important source of air pollution. We proposed a flexible and lightweight carbon nanotube (CNT) composite air filter for PM removal. The developed CNT filtering layers were fabricated using a floating catalyst ch...

  • Article
  • Open Access
1,520 Views
20 Pages

Modeling the Geometry and Filter Composite of the Air Cleaner

  • Pola Kalina Olszewska,
  • Justyna Pinkos,
  • Dominik Borkowski and
  • Maciej Jablonski

11 October 2024

Air pollution is currently the most significant environmental factor posing a threat to the health and lives of European residents. It is a key cause of poor health, particularly respiratory and cardiovascular diseases. The primary aim of the study w...

  • Article
  • Open Access
8 Citations
10,743 Views
20 Pages

4 June 2009

We present a coupled finite element, Kalman filter approach to foresee impactinduced delamination of layered composites when mechanical properties are partially unknown. Since direct numerical simulations, which require all the constitutive parameter...

  • Communication
  • Open Access
10 Citations
3,003 Views
9 Pages

A Sandwich Structural Filter Paper–AgNWs/MXene Composite for Superior Electromagnetic Interference Shielding

  • Xiaoshuai Han,
  • Hongyu Feng,
  • Wei Tian,
  • Kai Zhang,
  • Lei Zhang,
  • Jiangbo Wang and
  • Shaohua Jiang

10 March 2024

A thin, lightweight and flexible electromagnetic interference (EMI) shielding paper composite is an urgent need for modern military confrontations. Herein, a sandwich-structured EMI shielding paper composite with an easy pavement consisting of a filt...

  • Article
  • Open Access
27 Citations
6,483 Views
15 Pages

Multifunctional Polymer Composites Produced by Melt-Blown Technique to Use in Filtering Respiratory Protective Devices

  • Agnieszka Brochocka,
  • Aleksandra Nowak,
  • Katarzyna Majchrzycka,
  • Michał Puchalski and
  • Sławomir Sztajnowski

5 February 2020

In this work, a multifunctional polymer composite is made using melt-blowing technology from polypropylene (88 wt.%) and poly (ethylene terephthalate) (12 wt.%) with the addition of functional modifiers, that is, 3 g of a superabsorbent polymer and 5...

  • Article
  • Open Access
22 Citations
4,637 Views
12 Pages

24 December 2021

Glutathione (GSH) is a thiol that plays a significant role in nutrient metabolism, antioxidant defense and the regulation of cellular events. GSH deficiency is related to variety of diseases, so it is useful to develop novel approaches for GSH evalua...

  • Article
  • Open Access
15 Citations
5,802 Views
13 Pages

The Formation of Composite Ti-Al-N Coatings Using Filtered Vacuum Arc Deposition with Separate Cathodes

  • Ivan A. Shulepov,
  • Egor B. Kashkarov,
  • Igor B. Stepanov,
  • Maxim S. Syrtanov,
  • Alina N. Sutygina,
  • Ivan Shanenkov,
  • Aleksei Obrosov and
  • Sabine Weiß

12 November 2017

Ti-Al-N coatings were deposited on high-speed steel substrates by filtered vacuum arc deposition (FVAD) during evaporation of aluminum and titanium cathodes. Distribution of elements, phase composition, and mechanical properties of Ti-Al-N coatings w...

  • Article
  • Open Access
16 Citations
3,889 Views
9 Pages

A Plasmonic Infrared Multiple-Channel Filter Based on Gold Composite Nanocavities Metasurface

  • Jialin Zhang,
  • Xuanyi Yu,
  • Jingxin Dong,
  • Weiji Yang,
  • Shuang Liu,
  • Chongyang Shen,
  • Jiacheng Duan and
  • Xiaoxu Deng

14 July 2021

A plasmonic near-infrared multiple-channel filter is numerically and experimentally investigated based on a gold periodic composite nanocavities metasurface. By the interference among different excited plasmonic modes on the metasurface, the multipea...

  • Article
  • Open Access
16 Citations
2,731 Views
17 Pages

Online Prognosis of Bimodal Crack Evolution for Fatigue Life Prediction of Composite Laminates Using Particle Filters

  • Karkulali Pugalenthi,
  • Pham Luu Trung Duong,
  • Jaehyeok Doh,
  • Shaista Hussain,
  • Mark Hyunpong Jhon and
  • Nagarajan Raghavan

29 June 2021

Composite materials are extensively used in aircraft structures, wherein they are subjected to cyclic loads and subsequently impact-induced damages. Progressive fatigue degradation can lead to catastrophic failure. This highlights the need for an eff...

  • Article
  • Open Access
10 Citations
2,648 Views
14 Pages

A Compact Filtering Coupler with Unwanted Harmonic Rejection Using LC Composite Lines for Communication Systems Applications

  • Saeed Roshani,
  • Salah I. Yahya,
  • Yaqeen Sabah Mezaal,
  • Muhammad Akmal Chaudhary,
  • Aqeel A. Al-Hilali,
  • Yazeed Yasin Ghadi,
  • Mohsen Karimi and
  • Sobhan Roshani

29 December 2022

In this paper, new LC lumped components and composite lines are used to create a filtering branch line coupler (FBLC) with a small size and wide suppression band. New composite lines are proposed using applied LC lumped components, which are used as...

  • Article
  • Open Access
10 Citations
2,628 Views
11 Pages

6 July 2023

Indoor environment quality is currently a hot research topic. In this study, composite air filter materials were synthesized using different impregnated porous medium materials, and their filtration performance and structural parameters were analyzed...

  • Communication
  • Open Access
3 Citations
2,687 Views
13 Pages

Integrated Broadband Filter with Sharp Transition Edges Based on SiN and SiON Composite Waveguide Coupler

  • Xiao Ma,
  • Qiongchan Shao,
  • Jiamei Gu,
  • Tingting Lang,
  • Xiang Guo and
  • Jian-Jun He

20 November 2023

Broadband filters with sharp transition edges are important elements in diverse applications, including Raman and fluorescence spectral analysis, wideband wavelength-division multiplexing (WDM), and multi-octave interferometry. While the multi-layer...

  • Article
  • Open Access
7 Citations
2,355 Views
12 Pages

4 September 2020

Here, by harnessing a composite combination of wave retarders, we propose and experimentally demonstrate a first-order narrowband fiber comb filter capable of continuously tuning its wavelength, of which the filter structure is on the fundamental bas...

  • Article
  • Open Access
12 Citations
4,958 Views
9 Pages

A Compact 3.3–3.5 GHz Filter Based on Modified Composite Right-/Left-Handed Resonator Units

  • Shanwen Hu,
  • Yunqing Hu,
  • Haiyu Zheng,
  • Weiguang Zhu,
  • Yiting Gao and
  • Xiaodong Zhang

In the RF (Radio Frequency) front-end of a communication system, bandpass filters (BPFs) are used to send passband signals and reject stopband signals. Substrate-integrated waveguides (SIW) are widely used in RF filter designs due to their low loss a...

  • Article
  • Open Access
7 Citations
4,355 Views
12 Pages

Urea-formaldehyde resin (UFR), a thermosetting resin, is used to prepare ultrafiltration membranes because of its excellent mechanical properties and filtration performance. Herein, a porous ultrafiltration membrane is prepared by coating a mixture o...

  • Communication
  • Open Access
8 Citations
3,311 Views
8 Pages

20 June 2022

Recently, MnO2-coated polymeric filters have shown promising performance in room-temperature formaldehyde abatement. However, a commonly known concern of MnO2/polymer composites is either MnO2 crystal encapsulation or weak adhesion. This work reports...

  • Article
  • Open Access
3 Citations
3,966 Views
17 Pages

A Cleanable Self-Assembled Nano-SiO2/(PTFE/PEI)n/PPS Composite Filter Medium for High-Efficiency Fine Particulate Filtration

  • Yan Luo,
  • Zhongyun Shen,
  • Zhihao Ma,
  • Hongfeng Chen,
  • Xiaodong Wang,
  • Minger Luo,
  • Ran Wang and
  • Jianguo Huang

18 December 2021

A silicon dioxide/polytetrafluoroethylene/polyethyleneimine/polyphenylene sulfide (SiO2/PTFE/PEI/PPS) composite filter medium with three-dimensional network structures was fabricated by using PPS nonwoven as the substrate which was widely employed as...

  • Article
  • Open Access
3 Citations
3,305 Views
13 Pages

14 October 2022

A multi-wavelength erbium-doped fiber laser (MW-EDFL) with wide tuning range, switching and adjustable wavelength interval is designed and tested, which is based on a composite filter. The filter consists of a tapered microfiber coupler loop (TMCL) w...

  • Communication
  • Open Access
651 Views
11 Pages

Characteristics of Low-Frequency Metasurface Microwave Absorption Filter with Composite Molding and Size Dependency

  • Sangwon Baek,
  • Wonwoo Choi,
  • Sun-Woong Kim,
  • Minah Yoon,
  • Taein Choi,
  • Hak Joo Lee and
  • Kichul Kim

10 November 2025

This study presents a lightweight metasurface microwave absorption filter (MMAF) designed for low-frequency stealth applications in the L-band. The metasurface is optimized using a genetic algorithm to achieve broadband absorption at subwavelength th...

  • Article
  • Open Access
2,332 Views
17 Pages

18 September 2023

In the field of liquid filtration, the realization of gas throughput-free cake filtration has been investigated for a long time. Cake filtration without gas throughput would lead to energy savings in general and would reduce the mechanically achievab...

  • Article
  • Open Access
1 Citations
1,484 Views
19 Pages

Study on Demulsification via Vacuum Filtration with Superamphiphilic Diatomite/G-C3N4/Rice Husk Charcoal Composite Filter Layer

  • Yue Wang,
  • Tianxin Chen,
  • Yu Jia,
  • Feng Qin,
  • Junhui Gao,
  • Xingyang Zhang,
  • Jiahong He and
  • Jian He

22 February 2025

The primary extraction way for unconventional oil/gas resources is hydraulic fracturing to alter the reservoir for commercial production. However, hydraulic fracturing technology consumes a large amount of water, and the flowback water can easily be...

  • Article
  • Open Access
5 Citations
4,196 Views
19 Pages

21 October 2020

In hearing aid devices, speech enhancement techniques are a critical component to enable users with hearing loss to attain improved speech quality under noisy conditions. Recently, the deep denoising autoencoder (DDAE) was adopted successfully for re...

  • Article
  • Open Access
7 Citations
3,491 Views
30 Pages

2 July 2024

The purpose of this study was to empirically evaluate the performance of fibrous materials that meet the criteria for inlet air filtration in internal combustion engines. The characteristics of filtration efficiency and accuracy, as well as the chara...

  • Article
  • Open Access
2 Citations
3,199 Views
19 Pages

Ways to Improve the Effectiveness of Depressant Additives for the Production of Winter and Arctic Diesel Fuels

  • Ilya Bogdanov,
  • Yana Morozova,
  • Andrey Altynov,
  • Alina Titaeva and
  • Maria Kirgina

8 February 2024

Diesel fuel is the main fuel for transport and power generation for remote areas, especially the Arctic. For these territories, it is important to produce low-freezing fuel grades. The most effective way to improve the low-temperature properties of d...

  • Feature Paper
  • Article
  • Open Access
20 Citations
5,520 Views
23 Pages

11 January 2024

Along with worldwide urbanization, upheavals in habitat and temperature are major threats for biodiversity. However, due to their interdependence, their relative roles as drivers of animal community composition remain entangled. Here, we investigated...

  • Feature Paper
  • Article
  • Open Access
348 Views
26 Pages

26 January 2026

Filters and congruences are fundamental concepts in residuated lattices for characterizing their structure. In this paper, using a complete lattice L as the truth-value set and based on a triangular norm T and its induced operator νT, we investiga...

  • Article
  • Open Access
1 Citations
1,585 Views
12 Pages

13 February 2024

In this paper, a dual-band integrated bandpass filter (DI-BPF) based on a mode composite substrate integrated coaxial line (MCSICL) is proposed for a large frequency ratio. The low-frequency bandpass filter is formed by incorporating an SICL line and...

  • Article
  • Open Access
2 Citations
1,803 Views
15 Pages

Low Poisson’s Ratio Measurement on Composites Based on DIC and Frequency Analysis on Tensile Tests

  • Luis Felipe-Sesé,
  • Andreas Kenf,
  • Sebastian Schmeer,
  • Elías López-Alba and
  • Francisco Alberto Díaz

16 October 2025

Accurate determination of elastic properties, especially Poisson’s ratio, is crucial for the design and modeling of composite materials. Traditional methods often struggle with low strain measurements and non-uniform strain distributions inhere...

  • Article
  • Open Access
9 Citations
3,201 Views
9 Pages

Tunable Electromechanical Coupling Coefficient of a Laterally Excited Bulk Wave Resonator with Composite Piezoelectric Film

  • Ying Xie,
  • Yan Liu,
  • Jieyu Liu,
  • Lei Wang,
  • Wenjuan Liu,
  • Bo Woon Soon,
  • Yao Cai and
  • Chengliang Sun

18 April 2022

A resonator with an appropriate electromechanical coupling coefficient (Kt2) is crucial for filter applications in radio communication. In this paper, we present an effective method to tune the Kt2 of resonators by introducing different materials int...

  • Article
  • Open Access
14 Citations
3,514 Views
10 Pages

11 March 2022

Crystalline CaMoO4 and rare-earth-doped CaMoO4:RE3+ (RE = Tb, Eu) phosphors were synthesized at room temperature using a co-precipitation method. The crystal structure of the synthesized powder was a tetragonal structure with a main diffraction peak...

  • Article
  • Open Access
9 Citations
2,981 Views
20 Pages

11 August 2021

This paper presents a generalized framework for the digital generation of composite microstructures using filter-based approaches that can devise and utilize a wide variety of cost functions reflecting the desired targets on geometrical and statistic...

  • Feature Paper
  • Article
  • Open Access
14 Citations
5,019 Views
15 Pages

Fully Adaptive Particle Filtering Algorithm for Damage Diagnosis and Prognosis

  • Elaheh Rabiei,
  • Enrique Lopez Droguett and
  • Mohammad Modarres

31 January 2018

A fully adaptive particle filtering algorithm is proposed in this paper which is capable of updating both state process models and measurement models separately and simultaneously. The approach is a significant step toward more realistic online monit...

  • Communication
  • Open Access
27 Citations
5,881 Views
9 Pages

PMMA-ITO Composite Formation via Electrostatic Assembly Method for Infra-Red Filtering

  • Wai Kian Tan,
  • Atsushi Yokoi,
  • Go Kawamura,
  • Atsunori Matsuda and
  • Hiroyuki Muto

Formation of functional composite materials with desired properties is important for advanced application development. However, formation of a homogenous composite material via conventional mixing methods still remains a challenge due to agglomeratio...

  • Article
  • Open Access
2 Citations
2,130 Views
18 Pages

Herbal Waste from Filter-Tea Production as Eco-Friendly Ash for Sustainable Natural Rubber Composites

  • Jelena Lubura Stošić,
  • Oskar Bera,
  • Teodora Vukša,
  • Dario Balaban,
  • Senka Vidović,
  • Aleksandra Gavarić,
  • Sanja B. Ostojić and
  • Siniša Simić

6 January 2025

Herbal dust, a waste byproduct from filter-tea production, was annealed to form ash that can be incorporated into natural rubber as an eco-friendly filler. Three types of herbal dust ash (HDA), green tea, hibiscus, and lemon balm, were added at two d...

  • Article
  • Open Access
3 Citations
2,658 Views
21 Pages

18 June 2022

Between 2004 and 2018, NASA’s rover Opportunity found huge numbers of small, hematite-rich spherules (commonly called blueberries) on the Meridiani Planum of Mars. The standard oxide composition distributions of blueberries have remained poorly...

  • Article
  • Open Access
866 Views
20 Pages

Ordered Kernels of OBCI-Algebras in the Homomorphism Environment

  • Eunsuk Yang,
  • Eun-Hwan Roh and
  • Young-Bae Jun

4 February 2025

Yang, Roh and Jun recently introduced kernels of homomorphisms in OBCI-algebras and left an ordered generalization of those kernels as a future work. As its answer, we introduce the concept of ordered kernels of OBCI-algebras in the homomorphism envi...

  • Article
  • Open Access
3 Citations
4,739 Views
23 Pages

2D Prediction of the Nutritional Composition of Dishes from Food Images: Deep Learning Algorithm Selection and Data Curation Beyond the Nutrition5k Project

  • Rachele Bianco,
  • Sergio Coluccia,
  • Michela Marinoni,
  • Alex Falcon,
  • Federica Fiori,
  • Giuseppe Serra,
  • Monica Ferraroni,
  • Valeria Edefonti and
  • Maria Parpinel

30 June 2025

Background/Objectives: Deep learning (DL) has shown strong potential in analyzing food images, but few studies have directly predicted mass, energy, and macronutrient content from images. In addition to the importance of high-quality data, difference...

  • Article
  • Open Access
18 Citations
4,550 Views
13 Pages

Seasonal Variation in the Chemical Composition and Oxidative Potential of PM2.5

  • Alex Vinson,
  • Allie Sidwell,
  • Oscar Black and
  • Courtney Roper

13 October 2020

Exposure to fine particulate matter (PM2.5) has well-established systemic human health effects due in part to the chemical components associated with these exposures. Oxidative stress is a hypothesized mechanism for the health effects associated with...

  • Article
  • Open Access
16 Citations
4,116 Views
11 Pages

15 April 2022

In this study, terbium and europium rare-earth ions were single-doped and co-doped to synthesized SoMoO4 phosphor at room temperature. The samples prepared synthesized crystalline SrMoO4 powder by the co-precipitation. Samples had a tetragonal struct...

  • Article
  • Open Access
2 Citations
2,319 Views
14 Pages

Retardation Effects of Filter Mud in Molasses on Composite Silicate Cement

  • Xun He,
  • Hui Jiang,
  • Xin Wan,
  • Kequan Chen and
  • Pingkai Ouyang

3 June 2022

The filter mud in molasses has a significant inhibitory effect on biological activity and cannot be utilised by organisms; therefore, before molasses are biotransformed, the filter mud will be separated and directly discarded in the environment. In t...

  • Article
  • Open Access
499 Views
30 Pages

Real-Time Updating of Geochemical and Geometallurgical Spatial Models with Multivariate Ensemble Kalman Filtering: Application to Golgohar Iron Deposit

  • Sajjad Talesh Hosseini,
  • Omid Asghari,
  • Xavier Emery,
  • Jörg Benndorf,
  • Andisheh Alimoradi and
  • Sara Mehrali

28 January 2026

This paper presents an updatable stochastic geometallurgical framework that integrates geochemical compositions and processing-related variables within a unified spatial modeling and data assimilation workflow. The framework combines multivariate geo...

  • Article
  • Open Access
6 Citations
3,227 Views
19 Pages

5 September 2022

Succession in abandoned pastures in the tropics can progress along different pathways, and the changes in biodiversity on local and landscape scales, as well as in species turnover (β diversity), are still unclear. This study assessed the role o...

  • Article
  • Open Access
15 Citations
5,620 Views
13 Pages

Effect of Dissolution Time on the Development of All-Cellulose Composites Using the NaOH/Urea Solvent System

  • Juan Francisco Delgado,
  • Andrés Gerardo Salvay,
  • Silvana Arroyo,
  • Celina Raquel Bernal and
  • María Laura Foresti

Innovative and sustainable all-cellulose composites (ACCs) can be obtained by partial dissolution of cellulosic fibers and regeneration of the dissolved fraction. Among cellulose solvents, sodium hydroxide/urea solutions are recognized as promising l...

  • Article
  • Open Access
66 Citations
7,293 Views
20 Pages

22 February 2018

The evaluation of complexity in univariate signals has attracted considerable attention in recent years. This is often done using the framework of Multiscale Entropy, which entails two basic steps: coarse-graining to consider multiple temporal scales...

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