Skip to Content

6,171 Results Found

  • Feature Paper
  • Review
  • Open Access
48 Citations
11,762 Views
29 Pages

The Role of Counter-Ions in Peptides—An Overview

  • Karol Sikora,
  • Maciej Jaśkiewicz,
  • Damian Neubauer,
  • Dorian Migoń and
  • Wojciech Kamysz

3 December 2020

Peptides and proteins constitute a large group of molecules that play multiple functions in living organisms. In conjunction with their important role in biological processes and advances in chemical approaches of synthesis, the interest in peptide-b...

  • Article
  • Open Access
17 Citations
3,502 Views
19 Pages

9 May 2019

The improvement of wind turbine performance poses a constant challenge to researchers and designers in the field. As a result, the literature presents new concepts of wind turbines (WTs), such as: counter-rotating wind turbines (CRWTs) with two coaxi...

  • Article
  • Open Access
11 Citations
6,118 Views
22 Pages

Counter-Urban Activity Out of Copenhagen: Who, Where and Why?

  • Hans Thor Andersen,
  • Aske Egsgaard-Pedersen,
  • Høgni Kalsø Hansen,
  • Elise Stenholt Lange and
  • Helle Nørgaard

26 May 2022

While migration is often understood as movement towards cities, it can also assume another direction, traditionally termed counter-urbanisation. This paper contributes to the study of counter-urbanisation by investigating data on settlement patterns...

  • Review
  • Open Access
1 Citations
1,935 Views
18 Pages

The Effects of Counter-Ions on Peptide Structure, Activity, and Applications

  • Ying Liu,
  • Yi Huang,
  • Lan Yang,
  • Yu Gao,
  • Zheng Jia,
  • Tingting Liu,
  • Baoling Su,
  • Chuyuan Wang,
  • Lili Jin and
  • Dianbao Zhang

7 November 2025

Peptide drug development has emerged as a prominent area in pharmaceutical research due to its high specificity and therapeutic potential. However, their biological activity, stability, and bioavailability are significantly influenced by interactions...

  • Systematic Review
  • Open Access
679 Views
30 Pages

3 February 2026

Drawing on a systematic review of both international and Chinese-language scholarship on counter-urbanization in China, this article proposes a comprehensive typology of counter-urbanization migrations—consisting of eight types of new migrants&...

  • Article
  • Open Access
11 Citations
5,884 Views
19 Pages

Design and Validation of a Holographic Particle Counter

  • Georg Brunnhofer,
  • Alexander Bergmann,
  • Andreas Klug and
  • Martin Kraft

9 November 2019

An in-line holographic particle counter concept is presented and validated where multiple micrometer sized particles are detected in a three dimensional sampling volume, all at once. The proposed Particle Imaging Unit is capable of detecting hologram...

  • Article
  • Open Access
7 Citations
3,571 Views
9 Pages

15 February 2020

Since the United States Food and Drug Administration’s approval of over-the-counter levonorgestrel emergency contraception, access to this time-sensitive medication has improved. However, multiple barriers, including the cost of the medication...

  • Proceeding Paper
  • Open Access
4 Citations
2,170 Views
5 Pages

Modelling a Holographic Particle Counter

  • Georg Brunnhofer and
  • Alexander Bergmann

30 November 2018

In order to design an imaging unit of a novel holographic particle counter an aerosol particle model was developed to generate a virtual hologram plane of an aerosol volume of interest. The herein presented model combines the three essential componen...

  • Feature Paper
  • Article
  • Open Access
3 Citations
9,334 Views
27 Pages

Standardized Evaluation of Counter-Drone Systems: Methods, Technologies, and Performance Metrics

  • Geert De Cubber,
  • Daniela Doroftei,
  • Paraskevi Petsioti,
  • Alexios Koniaris,
  • Konrad Brewczyński,
  • Marek Życzkowski,
  • Razvan Roman,
  • Silviu Sima,
  • Ali Mohamoud and
  • Cristina Popa
  • + 4 authors

6 May 2025

This paper aims to introduce a standardized test methodology for drone detection, tracking, and identification systems. It is the aim that this standardized test methodology for assessing the performance of counter-drone systems will lead to a much b...

  • Article
  • Open Access
1 Citations
2,820 Views
15 Pages

1 February 2023

Serially connected statically balanced manipulators with springs have been used in many applications. However, a portion of the torques caused by springs countering each other lead to an imbalance in gravitational torques and, therefore, are deemed a...

  • Article
  • Open Access
16 Citations
3,482 Views
21 Pages

1 May 2021

Increasing the efficiency of wind power conversion into electricity poses major challenges to researchers and developers of wind turbines, who are striving for new solutions that can ensure better use of local wind potential in terms of both feasibil...

  • Article
  • Open Access
1 Citations
1,981 Views
20 Pages

CFD Analysis of Counter-Rotating Impeller Performance in Mixed-Flow Pumps

  • Edwar L. Pérez,
  • Miguel Asuaje and
  • Nicolas Ratkovich

4 October 2024

This study presents a computational fluid dynamics (CFD) analysis of the performance of counter-rotating impeller systems in mixed-flow pumps. The analysis evaluates the impact of varying rotor velocity ratios and blade geometry on head rise, efficie...

  • Article
  • Open Access
26 Citations
6,358 Views
25 Pages

18 April 2020

Counter-drone technology by using artificial intelligence (AI) is an emerging technology and it is rapidly developing. Considering the recent advances in AI, counter-drone systems with AI can be very accurate and efficient to fight against drones. Th...

  • Proceeding Paper
  • Open Access
5 Citations
2,460 Views
5 Pages

21 November 2018

Autonomous sensors are of interest in all cases where a continuous power source is not available or difficult to realize. Besides harvesting of electrical energy for a complex storage system, it is of interest to directly store an event in a non-elec...

  • Article
  • Open Access
9 Citations
1,494 Views
9 Pages

24 October 2005

Objective. To determine how knowledgeable pharmacy customers are regarding their own health and information about minor illnesses and over-the-counter medicines.

Methods. A written questionnaire was sent in the period of January to April 2003 to a sa...

  • Article
  • Open Access
4 Citations
1,809 Views
11 Pages

Artificial neural networks (ANNs) are nowadays applied as the most efficient methods in the majority of machine learning approaches, including data-driven modeling for assessment of the toxicity of chemicals. We developed a combined neural network me...

  • Article
  • Open Access
13 Citations
192,117 Views
16 Pages

18 January 2019

According to Islamic religious teachings, some Jews confirmed the authenticity of Muhammad’s prophethood and joined him. Most Jews, however, are condemned for both rejecting the Prophet and failing to live up to their own religious imperatives....

  • Article
  • Open Access
10 Citations
3,466 Views
18 Pages

9 November 2019

Based on satellite and analysis data and in situ observations acquired during May 23, 2017 to May 19, 2018, the spatiotemporal variations of the along-slope counter-flow off northeastern Taiwan were investigated. It was observed that the along-slope...

  • Article
  • Open Access
1 Citations
2,521 Views
23 Pages

24 February 2023

The article presents the process of creation of a signals database for the development of a train speed-estimation method for an axle counter system. In the article the authors present the need for information about the train speed on the railway lin...

  • Article
  • Open Access
4 Citations
2,753 Views
10 Pages

12 August 2022

With the recent interest in renewable energy sources, dye-sensitized solar cells (DSSCs) have received a great deal of attention as a cheaper and more sustainable alternative to silicon-based solar cells. In a DSSC, the counter electrode performs the...

  • Article
  • Open Access
7 Citations
12,365 Views
20 Pages

15 November 2021

This article examines the role of faith-based organizations (FBOs) in counter-radicalization in Nigeria, with emphasis on the Boko Haram terrorist group operating in northeast Nigeria and the greater Lake Chad region. A qualitative methodological app...

  • Article
  • Open Access
4,363 Views
12 Pages

23 August 2024

The extant texts of Enochic Judaism present accounts about the early history of humankind, which use the motifs familiar from the ancient Mesopotamian historiography. The different versions of the Jewish story of the Watchers originate as counter nar...

  • Article
  • Open Access
15 Citations
26,401 Views
9 Pages

The Over-the-Counter Medicines Market in Poland

  • Dorota Lasota,
  • Dagmara Mirowska-Guzel and
  • Mariusz Goniewicz

The market of over-the-counter drugs, so-called OTC drugs, is a dynamically developing market driven primarily by self-medication. Their use does not require consultation with a physician, and the patients themselves decide to take them. The distribu...

  • Article
  • Open Access
12 Citations
4,391 Views
18 Pages

12 May 2020

This paper presents signal filtering methods that can be effectively applied to train detection systems based on the axle counter systems that are currently in operation for train detection and provide information on the unoccupied status of railway...

  • Article
  • Open Access
1 Citations
3,054 Views
11 Pages

12 March 2024

Background: Over-the-counter (OTC) hearing aids were recently approved for sale in the United States. Research has shown that consumers prefer hearing devices that match their skin color because these devices are less noticeable. Colorism is discrimi...

  • Article
  • Open Access
42 Citations
10,525 Views
14 Pages

Real-Time Detection for Cache Side Channel Attack using Performance Counter Monitor

  • Jonghyeon Cho,
  • Taehun Kim,
  • Soojin Kim,
  • Miok Im,
  • Taehyun Kim and
  • Youngjoo Shin

3 February 2020

Cache side channel attacks extract secret information by monitoring the cache behavior of a victim. Normally, this attack targets an L3 cache, which is shared between a spy and a victim. Hence, a spy can obtain secret information without alerting the...

  • Article
  • Open Access
20 Citations
3,925 Views
16 Pages

31 May 2024

The electrode is a key component in a microbial electrolysis cell (MEC) that needs significant improvement for practical implementation. Accurate and reproducible analytical methods are substantial for the effective development of electrode technolog...

  • Article
  • Open Access
2 Citations
2,534 Views
14 Pages

20 January 2023

Counter tillage is a typical cultivation practice on the Loess Plateau, which can influence the soil erosion process by intercepting runoff and increasing infiltration. However, few studies have investigated the mechanisms of nutrient losses associat...

  • Article
  • Open Access
6 Citations
4,418 Views
16 Pages

Thrust and Noise Experimental Assessment on Counter-Rotating Coaxial Rotors

  • Nicola Russo,
  • Aniello Daniele Marano,
  • Giuseppe Maurizio Gagliardi,
  • Michele Guida,
  • Tiziano Polito and
  • Francesco Marulo

Multirotors are gaining great importance in the layout of innovative and more agile mobility. In this framework, a possible solution to developing an aircraft complying with the stringent size requirements characterizing this type of application may...

  • Article
  • Open Access
3 Citations
4,969 Views
8 Pages

Primary ciliary dyskinesia (PCD) is a disorder that affects motile cilia in the airway that are required for the removal of mucus, debris, and pathogens. It is important to diagnose PCD in early childhood to preserve lung function. The confirmation o...

  • Article
  • Open Access
1 Citations
1,644 Views
22 Pages

Numerical Study on Coupled Combustion of PMMA Counter-Directional Flame Spread at Variable Slope

  • Qiong Liu,
  • Kehong Li,
  • Chao Yuan,
  • Ning Bian,
  • Zhi Li,
  • Weilin Xu and
  • Jinrong Chen

29 May 2025

This paper investigates the dual effects of slope variation and flame interaction on counter-directional flame propagation through numerical simulations of polymethylmethacrylate (PMMA) plates. Critical flame propagation parameters, including flame m...

  • Article
  • Open Access
20 Citations
3,917 Views
16 Pages

22 October 2020

Incremental sheet metal forming can manufacture various sheet metal products without a dedicated punch and die set. In this study, we developed a two-stage incremental forming process to decrease shape errors in the conventional incremental forming p...

  • Article
  • Open Access
2,945 Views
19 Pages

Catalyst Design: Counter Anion Effect on Ni Nanocatalysts Anchored on Hollow Carbon Spheres

  • Ryan O’Connor,
  • Joyce B. Matsoso,
  • Victor Mashindi,
  • Pumza Mente,
  • Lebohang Macheli,
  • Beatriz D. Moreno,
  • Bryan P. Doyle,
  • Neil J. Coville and
  • Dean H. Barrett

20 January 2023

Herein, the influence of the counter anion on the structural properties of hollow carbon spheres (HCS) support was investigated by varying the nickel metal precursor salts applied. TEM and SEM micrographs revealed the dimensional dependence of the HC...

  • Article
  • Open Access
19 Citations
5,710 Views
16 Pages

Using an Accelerometer-Based Step Counter in Post-Stroke Patients: Validation of a Low-Cost Tool

  • Francesco Negrini,
  • Giulio Gasperini,
  • Eleonora Guanziroli,
  • Jacopo Antonino Vitale,
  • Giuseppe Banfi and
  • Franco Molteni

Monitoring the real-life mobility of stroke patients could be extremely useful for clinicians. Step counters are a widely accessible, portable, and cheap technology that can be used to monitor patients in different environments. The aim of this study...

  • Article
  • Open Access
24 Citations
8,045 Views
15 Pages

Performance Analyses of Counter-Flow Closed Wet Cooling Towers Based on a Simplified Calculation Method

  • Xiaoqing Wei,
  • Nianping Li,
  • Jinqing Peng,
  • Jianlin Cheng,
  • Jinhua Hu and
  • Meng Wang

27 February 2017

As one of the most widely used units in water cooling systems, the closed wet cooling towers (CWCTs) have two typical counter-flow constructions, in which the spray water flows from the top to the bottom, and the moist air and cooling water flow in t...

  • Article
  • Open Access
76 Citations
12,433 Views
12 Pages

Consumption of over-the-Counter Drugs: Prevalence and Type of Drugs

  • Eduardo Sánchez-Sánchez,
  • Fátima Lucía Fernández-Cerezo,
  • Jara Díaz-Jimenez,
  • Manuel Rosety-Rodriguez,
  • Antonio Jesús Díaz,
  • Francisco Javier Ordonez,
  • Miguel Ángel Rosety and
  • Ignacio Rosety

Recently, there has been an increase in the use of over-the-counter (OTC) drugs. The consumption of these medicines can be unsafe, as incorrect self-diagnosis or the ingestion of inappropriate doses can lead to side effects and the occurrence of adve...

  • Review
  • Open Access
16 Citations
6,045 Views
22 Pages

19 December 2018

A dye-sensitised solar cell (DSSC) counter electrode (CE) plays a vital role in catalysing the conversion of triiodide ( I 3 ) to iodide ions ( I ), thereby ensuring the completion of the repetitive cycle of electricit...

  • Article
  • Open Access
62 Citations
9,619 Views
16 Pages

14 April 2021

Organizational reliance on information and communication technology (ICT) is more likely to induce techno-stress as a detrimental effect, which has a negative impact on productivity. Businesses should make organizational efforts to decrease counter-p...

  • Article
  • Open Access
13 Citations
5,488 Views
12 Pages

Design Optimisation of the Feeding System of a Novel Counter-Gravity Casting Process

  • Michail Papanikolaou,
  • Emanuele Pagone,
  • Konstantinos Georgarakis,
  • Keith Rogers,
  • Mark Jolly and
  • Konstantinos Salonitis

11 October 2018

The appropriate design of feeders in a rigging system is critical for ensuring efficient compensation for solidification shrinkage, thus eliminating (shrinkage-related) porosity and contributing to the production of superior quality castings. In this...

  • Article
  • Open Access
3 Citations
1,657 Views
22 Pages

20 December 2024

Stream ciphers are a type of symmetric encryption algorithm, and excel in speed and efficiency compared with block ciphers. They are applied in various applications, particularly in digital communications and real-time transmissions. In this paper, w...

  • Article
  • Open Access
3 Citations
2,718 Views
24 Pages

Design and Testing of Discrete Element-Based Counter-Rotating Excavation Device for Cyperus esculentus

  • Zhuang Zhao,
  • Xiaoning He,
  • Shuqi Shang,
  • Jialin Hou,
  • Hao Zhu,
  • Haiqing Wang,
  • Yuetao Wang,
  • Dongjie Li,
  • Zengcun Chang and
  • Dongwei Wang
  • + 1 author

4 October 2022

Currently, the mechanized harvesting method of Cyperus esculentus is mainly based on rotary excavation, but there are problems such as high working resistance, high damage rate, and high buried fruit rate in the working process. This paper focuses on...

  • Article
  • Open Access
3 Citations
2,654 Views
10 Pages

Metal-Free Counter Electrodes for DSSCs Based on Nitrogen-Doped Reduced Graphene Oxide Materials

  • Isolda Duerto,
  • Clara Carrera,
  • Daniel Barrios,
  • Ana M. Benito,
  • Wolfgang K. Maser,
  • Belén Villacampa,
  • Enrique García-Bordejé and
  • María-Jesús Blesa

16 June 2023

The importance of counter electrodes in Dye Sensitized Solar Cells (DSSCs) cannot be neglected as they enable the transfer of electrons across the outer circuit, thereby facilitating the reduction reaction of the I3/I redox electrolyte....

  • Article
  • Open Access
70 Views
20 Pages

Enhancing the Detection of Long-Chain Aldehydes by Peptide-Based Biosensors Through Counter-Ion Exchange

  • Tomasz Wasilewski,
  • Damian Neubauer,
  • Elisabete Fernandes,
  • Rafał Kiejzik,
  • Bartosz Szulczyński,
  • Jacek Gębicki,
  • Wojciech Kamysz and
  • Marek Wojciechowski

13 March 2026

Long-chain aldehydes, particularly nonanal, are recognized as potential volatile biomarkers of lung cancer in exhaled breath. This study investigates the influence of peptide counter-ions on the performance of QCM-based biosensors using two odorant-b...

  • Article
  • Open Access
15 Citations
2,729 Views
20 Pages

Bivariate Copulas Based on Counter-Monotonic Shock Method

  • Farid El Ktaibi,
  • Rachid Bentoumi,
  • Nicola Sottocornola and
  • Mhamed Mesfioui

24 October 2022

This paper explores the properties of a family of bivariate copulas based on a new approach using the counter-monotonic shock method. The resulting copula covers the full range of negative dependence induced by one parameter. Expressions for the copu...

  • Article
  • Open Access
1 Citations
1,505 Views
12 Pages

19 October 2024

Digitized counter-diabatic (CD) optimization algorithms have been proposed and extensively studied to enhance performance in quantum computing by accelerating adiabatic processes while minimizing energy transitions. While adding approximate counter-d...

  • Review
  • Open Access
4 Citations
4,717 Views
11 Pages

18 November 2020

Efforts to achieve Sustainable Development Goals (SDGs) have resulted in enhancement of the position of microalgae in feedstocks for food, feed, healthcare, and biofuels. However, stabile microalgal biorefineries require a sustainable and reliable ma...

  • Review
  • Open Access
1 Citations
7,901 Views
13 Pages

The Risks of “Getting High” on Over-the-Counter Drugs during Pregnancy

  • Bianca-Eugenia Ősz,
  • Ruxandra Ștefănescu,
  • Andreea Sălcudean,
  • George Jîtcă and
  • Camil-Eugen Vari

Easy access to over-the-counter (OTC) drugs makes it possible to procure active substances that normally used in therapeutic doses do not raise health problems. The use of high doses of OTC drugs containing codeine, loperamide, pseudoephedrine, diphe...

of 124