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76 Results Found

  • Article
  • Open Access
1,038 Views
14 Pages

A 64 dB-DR, 4.5 GHz-BW Logarithmic Amplifier for RSSI Measurement in 180 nm SiGe Process

  • Yanhu Wang,
  • Wei Ruan,
  • Yuanjie Zhou,
  • Mengchen Lu,
  • Rui Teng and
  • Jiapeng Li

27 February 2025

For RSSI measurement of RF systems, a wide band, large dynamic range (DR), parallel-summation logarithmic amplifier is presented in this paper. The circuit adopts an 8-stage DC-coupled cascaded limiting amplifier structure. The output voltage of the...

  • Article
  • Open Access
905 Views
12 Pages

A High Dynamic Range and Fast Response Logarithmic Amplifier Employing Slope-Adjustment and Power-Down Mode

  • Yanhu Wang,
  • Rui Teng,
  • Yuanjie Zhou,
  • Mengchen Lu,
  • Wei Ruan and
  • Jiapeng Li

25 June 2025

Based on the GSMC 180 nm SiGe BiCMOS process, a parallel-summation logarithmic amplifier is presented in this paper. The logarithmic amplifier adopts a cascaded structure of nine-stage fully-differential limiting amplifiers (LA) to achieve high dynam...

  • Article
  • Open Access
4 Citations
3,372 Views
20 Pages

Opportunistic DF-AF Selection Relaying in Hybrid Wireless and Power Line Communication for Indoor IoT Networks

  • Hoang Thien Van,
  • Quyet-Nguyen Van,
  • Danh Hong Le,
  • Hoang-Phuong Van,
  • Jakub Jalowiczor,
  • Hoang-Sy Nguyen and
  • Miroslav Voznak

13 August 2021

This manuscript investigates the system performance of hybrid wireless and power line communication networks for indoor Internet of Things applications. Differentiating itself from the existing literature, the performance of the direct link and dual-...

  • Article
  • Open Access
4 Citations
3,976 Views
12 Pages

6 September 2018

This paper presents log likelihood ratio (LLR) based relay selection scheme for a cooperative amplify and forward relaying system. To evaluate the performance of the aforementioned system model, a three state Markov chain based fading environment has...

  • Article
  • Open Access
14 Citations
4,198 Views
18 Pages

16 June 2022

This research is concerned with extracting the approximate solutions of a controlled mass-damper-spring model via the harmonic balance method. The stability of these solutions was checked with the aid of Floquet theory. A nonlinear saturation control...

  • Article
  • Open Access
2 Citations
2,818 Views
16 Pages

29 December 2022

Distributions of the variance parameter values developed during the validation process. Comparisons of these prior distributions to the run-specific average are one measure used by analysts to assess the reliability of a STRmix deconvolution. This st...

  • Article
  • Open Access
2 Citations
6,981 Views
15 Pages

A Pipelined Noise-Shaping SAR ADC Using Ring Amplifier

  • Juyong Lee,
  • Seungjun Lee,
  • Kihyun Kim and
  • Hyungil Chae

15 August 2021

In this study, a pipelined noise-shaping successive-approximation register analog-to-digital converter (PLNS-SAR ADC) structure was proposed to achieve high resolution and to be free from comparator design requirements. The inter-stage amplifier and...

  • Article
  • Open Access
7 Citations
3,348 Views
18 Pages

29 May 2019

Wireless and power line communications (PLC) are important components of distribution network communication, and have a broad application prospect in the fields of intelligent power consumption and home Internet of Things (IoT). This study mainly ana...

  • Article
  • Open Access
3 Citations
2,833 Views
15 Pages

Bifurcation and Entropy Analysis of a Chaotic Spike Oscillator Circuit Based on the S-Switch

  • Petr Boriskov,
  • Andrei Velichko,
  • Nikolay Shilovsky and
  • Maksim Belyaev

19 November 2022

This paper presents a model and experimental study of a chaotic spike oscillator based on a leaky integrate-and-fire (LIF) neuron, which has a switching element with an S-type current-voltage characteristic (S-switch). The oscillator generates spikes...

  • Article
  • Open Access
12 Citations
9,699 Views
15 Pages

A Digital Lock-In Amplifier for Use at Temperatures of up to 200 °C

  • Jingjing Cheng,
  • Yingjun Xu,
  • Lei Wu and
  • Guangwei Wang

11 November 2016

Weak voltage signals cannot be reliably measured using currently available logging tools when these tools are subject to high-temperature (up to 200 °C) environments for prolonged periods. In this paper, we present a digital lock-in amplifier (DLIA)...

  • Article
  • Open Access
2 Citations
2,289 Views
14 Pages

Subgenomic RNA Detection in SARS-CoV-2 Assessing Replication and Inactivation Through Serial Passages, RT-qPCR, and Electron Microscopy

  • Talita da Silva França,
  • Juliana Fernandes Amorim da Silva,
  • Gabriella Christine Neves da Silva,
  • Barbara Oliveira dos Santos,
  • Stephanie Almeida Silva,
  • José Henrique Resende Linhares,
  • Marcos Alexandre Nunes da Silva,
  • Debora Ferreira Barreto-Vieira,
  • Vanessa Salete de Paula and
  • Gisela Freitas Trindade
  • + 2 authors

1 February 2025

Subgenomic RNAs (sgRNAs) are potential markers of active SARS-CoV-2 replication, serving as templates for the synthesis of structural and accessory proteins in infectious viral particles. This study aimed to use RT-qPCR to quantify sgRNA and negative...

  • Article
  • Open Access
5 Citations
5,180 Views
20 Pages

Gloxinia—An Open-Source Sensing Platform to Monitor the Dynamic Responses of Plants

  • Olivier Pieters,
  • Tom De Swaef,
  • Peter Lootens,
  • Michiel Stock,
  • Isabel Roldán-Ruiz and
  • Francis wyffels

28 May 2020

The study of the dynamic responses of plants to short-term environmental changes is becoming increasingly important in basic plant science, phenotyping, breeding, crop management, and modelling. These short-term variations are crucial in plant adapta...

  • Article
  • Open Access
10 Citations
4,967 Views
17 Pages

A rapid and accurate PCR-based method was developed in this study for detecting and identifying a new species of root-lesion nematode (Pratylenchus dakotaensis) recently discovered in a soybean field in North Dakota, USA. Species-specific primers, ta...

  • Article
  • Open Access
512 Views
17 Pages

Seismic Response Characteristics and Characterization Parameter Prediction of Thin Interbedded Coal Seam Fracture System

  • Kui Wu,
  • Yu Qi,
  • Sheng Zhang,
  • Feng He,
  • Silu Chen,
  • Yixin Yu,
  • Fei Gong and
  • Tingting Zhang

6 October 2025

Fracture systems critically govern coal seam permeability, influencing hydrocarbon migration pathways and well placement strategies. We established a predictive framework for fracture characterization in thin-interbedded coal reservoirs by integratin...

  • Article
  • Open Access
7 Citations
2,562 Views
19 Pages

15 September 2022

The aim of the current study was to assess the efficacy of Na-alginate edible films as vehicles for delivering lactic acid bacteria (LAB) with functional properties to sliced cheeses, with or without high-pressure processing (HPP). A three-strain LAB...

  • Article
  • Open Access
26 Citations
9,417 Views
14 Pages

A Portable Low-Power Acquisition System with a Urease Bioelectrochemical Sensor for Potentiometric Detection of Urea Concentrations

  • Wei-Jhe Ma,
  • Ching-Hsing Luo,
  • Jiun-Ling Lin,
  • Sin-Houng Chou,
  • Ping-Hung Chen,
  • Mei-Jywan Syu,
  • Shin-Hung Kuo and
  • Shin-Chi Lai

2 April 2016

This paper presents a portable low-power battery-driven bioelectrochemical signal acquisition system for urea detection. The proposed design has several advantages, including high performance, low cost, low-power consumption, and high portability. A...

  • Review
  • Open Access
6 Citations
3,854 Views
10 Pages

16 September 2022

Simultaneous monitoring of animal behavior and neuronal activity in the brain enables us to examine the neural underpinnings of behaviors. Conventionally, the neural activity data are buffered, amplified, multiplexed, and then converted from analog t...

  • Article
  • Open Access
14 Citations
4,867 Views
16 Pages

Influence of Forest Disturbance on La Crosse Virus Risk in Southwestern Virginia

  • M. Camille Hopkins,
  • Steven D. Zink,
  • Sally L. Paulson and
  • Dana M. Hawley

30 December 2019

Forest disturbance effects on La Crosse virus (LACV) are currently unknown. We determined the abundance of three LACV accessory vectors (Aedes albopictus, Ae. canadensis, and Ae. vexans) and the primary amplifying host (Eastern chipmunk; Tamias stria...

  • Article
  • Open Access
13 Citations
2,925 Views
14 Pages

Detection of Microbiota during the Fermentation Process of Wine in Relation to the Biogenic Amine Content

  • Ivana Regecová,
  • Boris Semjon,
  • Pavlina Jevinová,
  • Peter Očenáš,
  • Jana Výrostková,
  • Lucia Šuľáková,
  • Erika Nosková,
  • Slavomír Marcinčák and
  • Martin Bartkovský

2 October 2022

Viticulture is one of the traditional industries in Slovakia, where there are six wine-growing regions: Malokarpatska, Southern Slovakia, Central Slovakia, Nitra, Eastern Slovakia, and Tokaj. This study focuses on the detection of microbiota in soil...

  • Article
  • Open Access
12 Citations
3,337 Views
11 Pages

High-Precision Log-Ratio Spot Position Detection Algorithm with a Quadrant Detector under Different SNR Environments

  • Li Huo,
  • Zhiyong Wu,
  • Jiabin Wu,
  • Shijie Gao,
  • Yunshan Chen,
  • Yinuo Song and
  • Shuaifei Wang

18 April 2022

In atmospheric laser communication, a beam is transmitted through an atmospheric channel, and the photocurrent output from a quadrant detector (QD) used as the tracking sensor fluctuates significantly. To ensure uninterrupted communication and to ada...

  • Article
  • Open Access
1,329 Views
19 Pages

A New Discovery of Cu Mineralization in the North Qaidam, Tibet via Log-Ratio, Robust Factor Analysis, and Spectrum–Area Modeling

  • Shunli Zheng,
  • Jinshou Wang,
  • Haiwei Jiao,
  • Rongke Xu,
  • Yueming Yin,
  • Changtan Fang and
  • Xin Chen

20 March 2024

The Qinghai–Tibet Plateau, abundant in mineral resources, is a treasure trove for geological explorers. However, exploration has been hindered by the presence of dense vegetation, weathering layers, and desert cover, particularly in the North Q...

  • Communication
  • Open Access
1 Citations
2,026 Views
12 Pages

Weak Value Amplification Based Optical Sensor for High Throughput Real-Time Immunoassay of SARS-CoV-2 Spike Protein

  • Xiaonan Zhang,
  • Lizhong Zhang,
  • Han Li,
  • Yang Xu,
  • Lingqin Meng,
  • Gengyu Liang,
  • Bei Wang,
  • Le Liu,
  • Tian Guan and
  • Yonghong He
  • + 1 author

8 July 2024

The demand for accurate and efficient immunoassays calls for the development of precise, high-throughput analysis methods. This paper introduces a novel approach utilizing a weak measurement interface sensor for immunoassays, offering a solution for...

  • Article
  • Open Access
2 Citations
4,937 Views
10 Pages

14 June 2018

We show that a noiseless linear amplifier (NLA) can be placed properly at the receiver’s end to improve the performance of self-referenced (SR) continuous variable quantum key distribution (CV-QKD) when the reference pulses are weak. In SR CV-Q...

  • Article
  • Open Access
6 Citations
9,597 Views
17 Pages

10 May 2016

To discuss the reset noise generated by slow subthreshold currents in image sensors, intuitive and simple analytical forms are derived, in spite of the subthreshold current nonlinearity. These solutions characterize the time evolution of the reset no...

  • Article
  • Open Access
9 Citations
4,076 Views
16 Pages

New Preclinical Development of a c-Met Inhibitor and Its Combined Anti-Tumor Effect in c-Met-Amplified NSCLC

  • Nam Ah Kim,
  • Sungyoul Hong,
  • Ki Hyun Kim,
  • Du Hyung Choi,
  • Joo Seok Kim,
  • Kyung Eui Park,
  • Jun Young Choi,
  • Young Kee Shin and
  • Seong Hoon Jeong

c-Met is a receptor tyrosine kinase with no commercially available product despite being a pivotal target in cancer progression. Unlike other c-Met inhibitors that fail clinically, ABN401 is a newly synthesized c-Met inhibitor that is not potentially...

  • Article
  • Open Access
23 Citations
5,531 Views
24 Pages

10 November 2019

We evaluated electrocardiogram (ECG) biometrics using pre-configured models of convolutional neural networks (CNNs) with various time-frequency representations. Biometrics technology records a person’s physical or behavioral characteristics in...

  • Article
  • Open Access
6 Citations
4,113 Views
15 Pages

A Broadband Millimeter-Wave 5G Low Noise Amplifier Design in 22 nm Fully Depleted Silicon-on-Insulator (FD-SOI) CMOS

  • Liang-Wei Ouyang,
  • Jill C. Mayeda,
  • Clint Sweeney,
  • Donald Y. C. Lie and
  • Jerry Lopez

6 April 2024

This paper presents a broadband millimeter-wave (mm-Wave) low noise amplifier (LNA) designed in a 22 nm fully depleted silicon-on-insulator (FD-SOI) CMOS technology. Electromagnetic (EM) simulations suggest that the LNA has a 3-dB bandwidth (BW) from...

  • Article
  • Open Access
1 Citations
1,310 Views
12 Pages

Survival Distinctions for Cases Representing Immunologically Cold Tumors via Intrinsic Disorder Assessments for Blood-Sourced TRB Variable Regions

  • Arpan Sahoo,
  • Etienne C. Gozlan,
  • Joanna J. Song,
  • George Angelakakis,
  • Michelle Yeagley,
  • Boris I. Chobrutskiy,
  • Taha I. Huda and
  • George Blanck

30 October 2024

T cell receptor beta (TRB) sequences were recovered from the Cancer Genome Atlas Uveal Melanoma blood exome files. Intrinsic disorder scores for amino acid (AA) sequences of the entire TRB variable region were obtained and evaluated as potentially re...

  • Article
  • Open Access
14 Citations
6,196 Views
29 Pages

Identification of Driving Safety Profiles in Vehicle to Vehicle Communication System Based on Vehicle OBD Information

  • Hussein Ali Ameen,
  • Abd Kadir Mahamad,
  • Sharifah Saon,
  • Rami Qays Malik,
  • Zahraa Hashim Kareem,
  • Mohd Anuaruddin Bin Ahmadon and
  • Shingo Yamaguchi

29 April 2021

Driver behavior is a determining factor in more than 90% of road accidents. Previous research regarding the relationship between speeding behavior and crashes suggests that drivers who engage in frequent and extreme speeding behavior are overinvolved...

  • Article
  • Open Access
92 Citations
9,847 Views
15 Pages

27 September 2017

Anthropogenic heat and modified landscapes raise air and surface temperatures in urbanized areas around the globe. This phenomenon is widely known as an urban heat island (UHI). Previous UHI studies, and specifically those based on remote sensing dat...

  • Article
  • Open Access
6 Citations
2,991 Views
12 Pages

Threshold Uniformity Improvement in 1b Quanta Image Sensor Readout Circuit

  • Zhaoyang Yin,
  • Jiaju Ma,
  • Saleh Masoodian and
  • Eric R. Fossum

28 March 2022

A new readout architecture for single-bit quanta image sensor (QIS) consisting of a capacitive transimpedance amplifier (CTIA) before a 1-bit quantizer to improve the threshold uniformity of the readout cluster is proposed in this paper. The 1-bit qu...

  • Article
  • Open Access
7 Citations
7,143 Views
30 Pages

In Silico Prediction, Characterization and Molecular Docking Studies on New Benzamide Derivatives

  • Roxana Roman,
  • Lucia Pintilie,
  • Diana Nuță,
  • Speranța Avram,
  • Catalin Buiu,
  • Catalina Sogor and
  • Carmen Limban

5 February 2023

Recent research papers have confirmed the prevalence of microorganisms resistant to numerous antimicrobial agents, leading to spreading infections, extended hospitalizations, and increased mortality rates. The amplifying factors stimulate the need to...

  • Article
  • Open Access

21 January 2026

This study investigates the performance of a high-resolution Weather Research and Forecasting with large-eddy simulation (WRF-LES) model in simulating the strong wind of a realistic typhoon (Jebi, 2018). Multiple domains are nested to downscale the g...

  • Article
  • Open Access
1,816 Views
23 Pages

14 August 2025

China’s divergent fine particulate matter (PM2.5) and surface ozone (O3) pollution trends pose critical threats to sustainable development. This study quantifies the spatiotemporal evolution of health burdens (premature deaths) and economic cos...

  • Article
  • Open Access
15 Citations
7,713 Views
12 Pages

Molecular Detection of Two Potential Probiotic Lactobacilli Strains and Evaluation of Their Performance as Starter Adjuncts in Yogurt Production

  • Georgia Saxami,
  • Olga S. Papadopoulou,
  • Nikos Chorianopoulos,
  • Yiannis Kourkoutas,
  • Chrysoula C. Tassou and
  • Alex Galanis

A molecular method for efficient and accurate detection and identification of two potential probiotic lactobacilli strains isolated from fermented olives, namely Lactobacillus pentosus B281 and Lb. plantarum B282, was developed in the present study....

  • Article
  • Open Access
283 Views
31 Pages

4 January 2026

This study proposes a novel high-performance computational framework to address the computational challenges in probabilistic large-deformation landslide analysis. By integrating a GPU-accelerated material point method (MPM) solver with a parallelize...

  • Article
  • Open Access
21 Citations
5,487 Views
16 Pages

In this study, droplet digital PCRTM (ddPCRTM) was used to characterize total Legionella spp. and five specific Legionella species from source (groundwater) to exposure sites (taps and cooling towers). A total of 42–10 L volume water samples we...

  • Article
  • Open Access
11 Citations
3,975 Views
14 Pages

Deep-UV absorption spectrometry for detection of toxic airborne gases, for instance, Benzene, Toluene, Ethylbenzene, and Xylenes (BTEX) has drawn considerable attention owing to its high sensitivity and reliability. However, the development of a deep...

  • Article
  • Open Access
15 Citations
7,682 Views
13 Pages

Microbiological Quality of Nuts, Dried and Candied Fruits, Including the Prevalence of Cronobacter spp.

  • Anna Berthold-Pluta,
  • Monika Garbowska,
  • Ilona Stefańska,
  • Lidia Stasiak-Różańska,
  • Tamara Aleksandrzak-Piekarczyk and
  • Antoni Pluta

Cronobacter genus bacteria are food-borne pathogens. Foods contaminated with Cronobacter spp. may pose a risk to infants or immunocompromised adults. The aim of this study was to determine the microbiological quality of nuts, seeds and dried fruits w...

  • Article
  • Open Access
40 Citations
7,174 Views
20 Pages

23 November 2019

The soilborne pathogen Ralstonia solanacearum is the causal agent of bacterial wilt (BW), a major disease of pepper (Capsicum annuum). The genetic basis of resistance to this disease in pepper is not well known. This study aimed to identify BW resist...

  • Article
  • Open Access
1 Citations
2,528 Views
13 Pages

Prevalence, Genetic Diversity, and Quantification of the RNA Genome of the Hepatitis E Virus in Slaughtered Pigs in Serbia

  • Lazar Milojević,
  • Branko Velebit,
  • Vesna Janković,
  • Radmila Mitrović,
  • Nikola Betić,
  • Sara Simunović and
  • Mirjana Dimitrijević

10 February 2024

The goal of this study conducted in Serbia was to detect HEV in pig liver samples from slaughterhouses, retail outlets, and environmental swabs over the course of a year. All positive HEV samples were measured and expressed as HEV gene copy numbers p...

  • Article
  • Open Access
1,328 Views
20 Pages

30 September 2025

Foodborne illness outbreaks from fresh produce underscore the urgent demand for sanitizing strategies that ensure safety while minimizing harmful by-products from high-dose chemical disinfectants such as sodium hypochlorite (NaOCl). Low-concentration...

  • Article
  • Open Access
1,530 Views
12 Pages

Murine leukemia viruses (MuLVs) are retroviruses that cause various diseases in mice and have served as a model for retrovirus replication and pathogenesis. MuLVs are separated into infectious exogenous retroviruses (XRVs) and endogenous retroviruses...

  • Article
  • Open Access
783 Views
25 Pages

Bridges are critical nodes in freight networks, yet limited funding prevents agencies from maintaining all structures in good condition. This creates the need for a transparent and scalable method to identify which bridges pose the greatest risk to s...

  • Article
  • Open Access
491 Views
14 Pages

Retrospective Assessment of Palatal Biofilm and Mucosal Inflammation Under Orthodontic Appliances in Young Adults (2022–2025): A Single-Center Cohort with Microbiologic Sub-Sampling

  • Bianca Dragos,
  • Dana-Cristina Bratu,
  • George Popa,
  • Magda-Mihaela Luca,
  • Remus-Christian Bratu,
  • Carina Neagu and
  • Cosmin Sinescu

23 October 2025

Background and Objectives: Orthodontic auxiliaries create plaque-retentive niches that may amplify biofilm accumulation and inflame adjacent soft tissues. While cross-sectional comparisons suggest higher palatal burden beneath acrylic elements, less...

  • Article
  • Open Access
8 Citations
5,509 Views
12 Pages

26 July 2021

In this work, an innovative, flow-through, double-beam, photometric detector with direct injection of the reagents (double-DID) was used for the first time for the determination of iron in pharmaceuticals. For stable measurement of the absorbance, do...

  • Article
  • Open Access
9 Citations
3,632 Views
14 Pages

Evaluation of RT-qPCR and Loop-Mediated Isothermal Amplification (LAMP) Assays for the Detection of SARS-CoV-2 in Argentina

  • María Dolores Fellner,
  • Romina Bonaventura,
  • Jorge Basiletti,
  • Martín Avaro,
  • Estefanía Benedetti,
  • Ana Campos,
  • María Elena Dattero,
  • Mara Russo,
  • Sara Vladmirsky and
  • Elsa G. Baumeister
  • + 5 authors

28 April 2021

Our aim was to evaluate the analytical and clinical performance of the SARS-CoV-2 molecular detection kits used in Argentina. Nine real-time reverse-transcription polymerase chain reaction (RT-qPCR) and three reverse-transcription loop-mediated isoth...

  • Article
  • Open Access
2 Citations
2,517 Views
16 Pages

Developing a Universal Mirror–mirror Laser Mapping System for Single Event Effect Research

  • Cheng Gu,
  • George Belev,
  • Haonan Tian,
  • Shuting Shi,
  • Issam Nofal,
  • Shijie Wen and
  • Li Chen

26 April 2020

Research on single event effects (SEEs) is significant to the design and manufacture of modern electronic devices. By applying two photon absorption (TPA) ultra-fast pulsed lasers, extra electron-hole pairs (EHPs) are generated in a desired location...

  • Article
  • Open Access
39 Citations
6,453 Views
11 Pages

Highly Specific and Rapid Detection of Hepatitis C Virus Using RT-LAMP-Coupled CRISPR–Cas12 Assay

  • Nang Kham-Kjing,
  • Nicole Ngo-Giang-Huong,
  • Khajornsak Tragoolpua,
  • Woottichai Khamduang and
  • Sayamon Hongjaisee

Hepatitis C virus (HCV) infection can be cured with pan-genotypic direct-acting antiviral agents. However, identifying individuals with current hepatitis C remains a major challenge, especially in resource-limited settings where access to or availabi...

  • Article
  • Open Access
4 Citations
2,624 Views
15 Pages

Antimicrobial Activity of Gentamicin-Loaded Biocomposites Synthesized through Inverse Vulcanization from Soybean and Sunflower Oils

  • Ana S. Farioli,
  • María V. Martinez,
  • Cesar A. Barbero,
  • Diego F. Acevedo and
  • Edith I. Yslas

1 August 2024

Cross-linked polymers synthesized through inverse vulcanization of unsaturated vegetable oils (biopolymers) were used as matrices for incorporating gentamicin (GEN) to form a biocomposite that can amplify GEN antimicrobial activity against Pseudomona...

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