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Wyniki wyszukiwania dla: temperature modulation

Wyniki wyszukiwania dla: temperature modulation

  • PHONEME DISTORTION IN PUBLIC ADDRESS SYSTEMS

    Publikacja

    The quality of voice messages in speech reinforcement and public address systems is often poor. The sound engineering projects of such systems take care of sound intensity and possible reverberation phenomena in public space without, however, considering the influence of acoustic interference related to the number and distribution of loudspeakers. This paper presents the results of measurements and numerical simulations of the...

  • The Role of Inflammatory Cytokines in the Pathogenesis of Colorectal Carcinoma-Recent Findings and Review

    Publikacja
    • J. Borowczak
    • K. Szczerbowski
    • M. Maniewski
    • A. Kowalewski
    • M. Janiczek-Polewska
    • A. Szylberg
    • A. Marszałek
    • Ł. Szylberg

    - Biomedicines - Rok 2022

    The inflammatory process plays a significant role in the development of colon cancer (CRC). Intestinal cytokine networks are critical mediators of tissue homeostasis and inflammation but also impact carcinogenesis at all stages of the disease. Recent studies suggest that inflammation is of greater importance in the serrated pathway than in the adenoma-carcinoma pathway. Interleukins have gained the most attention due to their...

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  • Detection of gaseous compounds with different techniques

    Publikacja
    • J. Mikołajczyk
    • Z. Bielecki
    • T. Stacewicz
    • J. Smulko
    • J. Wojtas
    • D. Szabra
    • Ł. Lentka
    • A. Prokopiuk
    • P. Magryta

    - Metrology and Measurement Systems - Rok 2016

    Sensing technology has been developed for detection of gases in some environmental, industrial, medical, and scientific applications. The main tasks of these works is to enhance performance of gas sensors taking into account their different applicability and scenarios of operation. This paper presents the descriptions, comparison and recent progress in some existing gas sensing technologies. Detailed introduction to optical sensing...

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  • Measurement of Impulse Response of Shallow Water Communication Channel by Correlation Method

    Performances of underwater acoustic communication (UAC) systems are strongly related to specific propagation conditions of the underwater channel; conditions that can additionally change in time due to the movement of the acoustic system transmitter and receiver or to reflection by underwater objects of the transmitted signal. The time-varying impulse response is a comprehensive description of dynamically changing transmission...

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  • RCDs Tripping in the Range from DC to AC 50 kHz for Slowly Rising Residual Current

    Publikacja

    - Rok 2023

    The wide use of power electronic converters means that in many low-voltage systems earth fault currents containing components from DC to AC of various frequencies have to be taken into account. Due to the tendency to increase the modulation frequency in converters, components of higher frequencies may be in the order of several tens of kilohertz. Therefore, it is very important to verify the behavior of devices for protection against...

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  • Single-phase, Five-level Inverter with SPWM-Based Neutral Point Voltage Balancing Scheme

    Publikacja

    Multilevel inverter topologies provide several advantages over two-level inverter configuration. These benefits are the reason for the growing interest in multilevel topologies among research society. One of the most popular topological concepts (diode and active switch clamping) requires neutral-point potential balancing due to series-connected capacitor banks across the input dc link in such derived inverter configurations. This...

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  • Testing OFDM Transmission Schemes for Shallow Water Acoustic Communications

    Publikacja

    Large variability of communication properties of underwater acoustic channels, and especially strongly varying instantaneous conditions in shallow waters, is a tough challenge for the designers of underwater acoustics communication (UAC system. There is a need for developing adaptive signaling schemes that would dynamically optimize signal parameters in both physical and link layers of communication protocols. The orthogonal frequency...

  • Light-Modulated Sunscreen Mechanism in the Retina of the Human Eye

    Publikacja

    - JOURNAL OF PHYSICAL CHEMISTRY B - Rok 2021

    The functioning of the human eye in the extreme range of light intensity requires a combination of the high sensitivity of photoreceptors with their photostability. Here, we identify a regulatory mechanism based on dynamic modulation of light absorption by xanthophylls in the retina, realized by reorientation of pigment molecules induced by trans–cis photoisomerization. We explore this photochemically switchable system using chromatographic...

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  • A Comprehensive Review of Phytonutrients as a Dietary Therapy for Obesity

    Publikacja
    • S. A. Siddiqui
    • I. Azmy Harahap
    • P. Suthar
    • Y. S. Wu
    • N. Ghosh
    • R. Castro Munoz

    - Foods - Rok 2023

    Obesity is a complex medical condition mainly caused by eating habits, genetics, lifestyle, and medicine. The present study deals with traditional diets like the Mediterranean diet, Nordic diet, African Heritage diet, Asian diet, and DASH, as these are considered to be sustainable diets for curing obesity. However, the bioavailability of phytonutrients consumed in the diet may vary, depending on several factors such as digestion...

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  • Analytical Estimation of Power Losses in a Dual Active Bridge Converter Controlled with a Single-Phase Shift Switching Scheme

    Publikacja

    - ENERGIES - Rok 2022

    Micro-grid solutions around the world rely on the operation of DC/DC power conver- sion systems. The most commonly used solution for these topologies is the use of a dual active bridge (DAB) converter. Increasing the efficiency and reliability of this system contributes to the improvement in the stability of the entire microgrid. This paper discussed an analytical method of energy efficiency and power loss estimation in a single...

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  • Induction Generator with Direct Control and a Limited Number of Measurements on the Side of the Converter Connected to the Power Grid

    Publikacja

    - ENERGIES - Rok 2022

    The article presents an induction generator connected to the power grid using the AC/DC/AC converter and LCL coupling filter. Three-level inverters were used in the converter, both from the generator side and the power grid side. The algorithm realizing Pulse Width Modulation (PWM) in inverters has been simplified to the maximum. Control of the induction generator was based on the Direct Field-Oriented Control (DFOC) method. At...

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  • Study of ZrS3-based field-effect transistors toward the understanding of the mechanisms of light-enhanced gas sensing by transition metal trichalcogenides

    Publikacja

    - Materials Today Communications - Rok 2023

    Extending knowledge of the properties of low-dimensional van der Waals materials, including their reactivity to the ambiance, is important for developing innovative electronic and optoelectronic devices. Transition metal trichalcogenides with tunable optical band gaps and anisotropic conductivity are an emerging class among low- dimensional structures with the possibility of gate tunability and photoreactivity. These properties...

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  • Collagen Type II—Chitosan Interactions as Dependent on Hydroxylation and Acetylation Inferred from Molecular Dynamics Simulations

    Publikacja
    • M. Przybyłek
    • P. Bełdowski
    • F. Wieland
    • P. Cysewski
    • A. Sionkowska

    - MOLECULES - Rok 2023

    Chitosan–collagen blends have been widely applied in tissue engineering, joints diseases treatment, and many other biomedical fields. Understanding the affinity between chitosan and collagen type II is particularly relevant in the context of mechanical properties modulation, which is closely associated with designing biomaterials suitable for cartilage and synovial fluid regeneration. However, many structural features influence...

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  • Przekształtnik prądu jako sterownik w układach napędowych z silnikami indukcyjnymi

    The circuits used for power conversion applied in drives with electric machines are classified into two groups: voltage source inverters (VSI) and current source inverters (CSI). Application of the current source inverter results in better properties of drive than application of voltage source inverter because there is no output filter. The development of power electronics and especially the IGBTs, in which on/off-times are very...

  • Pupil size reflects successful encoding and recall of memory in humans

    Publikacja
    • M. T. Kucewicz
    • J. Dolezal
    • V. Kremen
    • B. M. Berry
    • L. R. Miller
    • A. L. Magee
    • V. Fabian
    • G. A. Worrell

    - Scientific Reports - Rok 2018

    Pupil responses are known to indicate brain processes involved in perception, attention and decision-making. They can provide an accessible biomarker of human memory performance and cognitive states in general. Here we investigated changes in the pupil size during encoding and recall of word lists. Consistent patterns in the pupil response were found across and within distinct phases of the free recall task. The pupil was most...

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  • The development of an underwater telephone for digital communication purposes

    Publikacja

    - HYDROACOUSTICS - Rok 2016

    The underwater telephone HTL-10 has been designed to provide voice and data communication between helicopter and submarines using acoustic waves. It works in a half-duplex mode and uses analogue power-efficient modulation in the form of a single side-band, suppressed carrier, in a wide range of frequencies. It generates the transmitted signal, and processes the received signals. It is implemented with the use of digital signal...

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  • Localization and Orientation of Xanthophylls in a Lipid Bilayer

    Publikacja

    - Scientific Reports - Rok 2017

    Xanthophylls (polar carotenoids) play diverse biological roles, among which are modulation of the physical properties of lipid membranes and protection of biomembranes against oxidative damage. Molecular mechanisms underlying these functions are intimately related to the localization and orientation of xanthophyll molecules in lipid membranes. In the present work, we address the problem of localization and orientation of two xanthophylls...

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  • The Conceptual Research over Low-Switching Modulation Strategy for Matrix Converters with the Coupled Reactors

    Publikacja

    - ENERGIES - Rok 2021

    In this paper, different Pulse Width Modulation (PWM) strategies for operating with a low-switching frequency, a topology that combines Conventional Matrix Converters (CMCs), and Coupled Reactors (CRs) are presented and discussed. The principles of the proposed strategies are first discussed by a conceptual analysis and later validated by simulation. The paper shows how the combination of CMCs and CRs could be of special interest...

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  • Bezczujnikowe sterowanie trakcyjnym silnikiem IPMSM małej mocy

    This paper describes an algorithm for estimation of IPMSM angular rotor position. The algorithm uses derivatives of motor phase currents resulting from PWM modulation to obtain the rotor position. Control of the IPMSM electromagnetic torque requires a precise estimation of the rotor angular position throughout the wide speed range. This involves using a set of estimation methods switched with the dependence on the actual rotor...

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  • Integrated Three-Level Dual-Phase Inverter

    Publikacja

    - ENERGIES - Rok 2022

    In view of reducing the number of inverter legs that provide dual-phase, three-level output voltages (as may be needed in an uninterruptible power supply), and that also provide a wide range of output frequencies (as needed in an advanced motor drive system with wide speed ranges), a three-level, dual-phase inverter topology is presented in this paper. Its three-level attribute was based on the F-type inverter topological concept,...

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  • Selective Harmonic Elimination PWM For a Cascaded Multi-level Inverter

    Publikacja

    - Rok 2020

    This paper deals with the selective harmonic elimination pulse width modulation (SHE-PWM) technique. This technique is used for the elimination of selected dominant low order harmonics in the multi-level inverter output voltage. The presence of these harmonics is the essential drawback of such kind of inverters; especially when it is used for the control of different AC drivers. The SHE-PWM is based...

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  • A High-Efficient Measurement System With Optimization Feature for Prototype CMOS Image Sensors

    In this paper, a gray-scale CMOS image sensor (CIS) characterization system with an optimization feature has been proposed. By using a very fast and precise control of light intensity, based on the pulsewidth-modulation method, it is avoided to measure the illuminance every time. These features accelerate the multicriteria CIS optimization requiring many thousands of measurements. The system throughput is 2.5 Gb/s, which allows...

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  • Current Source Inverter Fed Drive

    Publikacja

    - Rok 2021

    This book covers three-phase and multiphase (more than three-phase) motor drives including their control and practical problems faced in the field (e.g., adding LC filters in the output of a feeding converter), are considered. The new edition contains links to Matlab®/Simulink models and PowerPoint slides ideal for teaching and understanding the material contained within the book. Readers will also benefit from the inclusion of: A...

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  • Low-Power Receivers for Wireless Capacitive Coupling Transmission in 3-D-Integrated Massively Parallel CMOS Imager

    The paper presents pixel receivers for massively parallel transmission of video signal between capacitive coupled integrated circuits (ICs). The receivers meet the key requirements for massively parallel transmission, namely low-power consumption below a single μW, small area of less than 205 μm2, high sensitivity better than 160 mV, and good immunity to crosstalk. The receivers were implemented and measured in a 3-D IC (two face-to-face...

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  • Modified Peptide Molecules As Potential Modulators of Shelterin Protein Functions; TRF1

    Publikacja
    • W. Brankiewicz
    • U. Kalathiya
    • M. Padariya
    • K. Wegrzyn
    • M. Prusinowski
    • J. Żebrowska
    • A. Zylicz-Stachula
    • P. Skowron
    • M. Drab
    • M. Szajewski... i 5 innych

    - CHEMISTRY-A EUROPEAN JOURNAL - Rok 2023

    In this work, we present studies on relatively new and still not well-explored potential anticancer targets which are shelterin proteins, in particular the TRF1 protein can be blocked by in silico designed "peptidomimetic" molecules. TRF1 interacts directly with the TIN2 protein, and this protein-protein interaction is crucial for the proper functioning of telomere, which could be blocked by our novel modified peptide molecules....

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  • Behavior of residual current devices at frequencies up to 50 kHz

    Publikacja

    - ENERGIES - Rok 2021

    The use of residual current devices (RCDs) is obligatory in many types of low-voltage circuits. They are devices that ensure protection against electric shock in the case of indirect contact and may ensure additional protection in the case of direct contact. For the latter purpose of protection, only RCDs of a rated residual operating current not exceeding 30 mA are suitable. Unfortunately, modem current-using equipment supplied...

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  • Analysis of AC/DC/DC Converter Modules for Direct Current Fast-Charging Applications

    Publikacja

    - ENERGIES - Rok 2021

    The paper is a comprehensive laboratory comparison study of two galvanic isolated solution off-board battery chargers: (1) Si-based cost-effective case, and (2) SiC-bidirectional ready for vehicle to grid concept case. All circuits are modular, and in both cases the DC/DC converter can be replaced according to the end user requirements (the coupled transformer remains the same and is constructed based on 12xC100 cores to avoid...

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  • ‘Acridines’ as New Horizons in Antifungal Treatment

    Publikacja

    - MOLECULES - Rok 2020

    Frequent fungal infections in immunocompromised patients and mortality due to invasive mycosis are important clinical problems. Opportunistic pathogenic Candida species remain one of the leading causes of systemic mycosis worldwide. The repertoire of antifungal chemotherapeutic agents is very limited. Although new antifungal drugs such as lanosterol 14α-demethylase and β-glucan synthase inhibitors have been introduced into clinical...

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  • Receptor for advanced glycation end‐products: Biological significance and imaging applications

    Publikacja
    • I. T. Dobrucki
    • A. Miskalis
    • M. B. Nelappana
    • C. C. Applegate
    • M. Woźniak
    • A. Czerwinski
    • L. Kalinowski
    • L. W. Dobrucki

    - Wiley Interdisciplinary Reviews-Nanomedicine and Nanobiotechnology - Rok 2024

    The receptor for advanced glycation end-products (RAGE or AGER) is a transmembrane, immunoglobulin-like receptor that, due to its multiple isoform structures, binds to a diverse range of endo- and exogenous ligands. RAGE activation caused by the ligand binding initiates a cascade of complex pathways associated with producing free radicals, such as reactive nitric oxide and oxygen species, cell proliferation, and immunoinflammatory...

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  • Distinct hippocampal-prefrontal neural assemblies coordinate memory encoding, maintenance, and recall

    Publikacja
    • A. Domanski
    • M. T. Kucewicz
    • E. Russo
    • M. D. Tricklebank
    • J. E. Robinson
    • D. Durstewitz
    • M. W. Jones

    - CURRENT BIOLOGY - Rok 2023

    Short-term memory enables incorporation of recent experience into subsequent decision-making. This processing recruits both the prefrontal cortex and hippocampus, where neurons encode task cues, rules, and outcomes. However, precisely which information is carried when, and by which neurons, remains unclear. Using population decoding of activity in rat medial prefrontal cortex (mPFC) and dorsal hippocampal CA1, we confirm that mPFC...

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  • Bearing estimation using double frequency reassignment for a linear passive array

    The paper demonstrates the use of frequency reassignment for bearing estimation. For this task, signals derived from a linear equispaced passive array are used. The presented method makes use of Fourier transformation based spatial spectrum estimation. It is further developed through the application of two-dimensional reassignment, which leads to obtaining highly concentrated energy distributions in the joint frequency-angle domain...

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  • The Many Faces of Enterococcus spp.—Commensal, Probiotic and Opportunistic Pathogen

    Publikacja

    - Microorganisms - Rok 2021

    Enterococcus spp. are Gram-positive, facultative, anaerobic cocci, which are found in the intestinal flora and, less frequently, in the vagina or mouth. Enterococcus faecalis and Enterococcus faecium are the most common species found in humans. As commensals, enterococci colonize the digestive system and participate in the modulation of the immune system in humans and animals. For many years reference enterococcal strains have...

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  • DNA methylation as a mediator of HLA-DRB1*15:01 and a protective variant in multiple sclerosis

    Publikacja
    • L. Kular
    • Y. Liu
    • S. Ruhrmann
    • G. Zheleznyakova
    • F. Marabita
    • D. Gomez-Cabrero
    • T. James
    • E. Ewing
    • M. Lindén
    • B. Górnikiewicz... i 38 innych

    - Nature Communications - Rok 2018

    The human leukocyte antigen (HLA) haplotype DRB1*15:01 is the major risk factor for multiple sclerosis (MS). Here, we find that DRB1*15:01 is hypomethylated and predominantly expressed in monocytes among carriers of DRB1*15:01. A differentially methylated region (DMR) encompassing HLA-DRB1 exon 2 is particularly affected and displays methylation-sensitive regulatory properties in vitro. Causal inference and Mendelian randomization...

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  • Analysis of Video Transmission Capabilities in a Simulated OFDM-Based Supplementary BPL-PLC System

    Publikacja

    - ENERGIES - Rok 2022

    The design and maintenance of a reliable communication system, especially in harsh working conditions for the oil and mining industry, brings many challenges. With the use of a video transmission system, one can monitor the crew and their working environment. Broadband over power line–power line communication (BPL-PLC) seems an ideal medium for such a service, since it enables the use of the existing wired infrastructure for supplementary...

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  • Optimization of Chemical Functionalities of Indole-2-carboxamides To Improve Allosteric Parameters for the Cannabinoid Receptor 1 (CB1)

    Publikacja
    • L. Khurana
    • H. I. Ali
    • T. Olszewska
    • K. H. Ahn
    • A. Damaraju
    • D. A. Kendall
    • D. Lu

    - JOURNAL OF MEDICINAL CHEMISTRY - Rok 2014

    5-Chloro-3-ethyl-N-(4-(piperidin-1-yl)phenethyl)-1H-indole-2-carboxamide (1; ORG27569) is a prototypical allosteric modulator for the cannabinoid type 1 receptor (CB1). Here, we reveal key structural requirements of indole-2-carboxamides for allosteric modulation of CB1: a critical chain length at the C3-position, an electron withdrawing group at the C5-position, the length of the linker between the amide bond and the phenyl ring...

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  • The adaptive backstepping control of PMSM supplied by current source inverter for the field weakening region

    The sensorless control system of permanent magnet synchronous motor PMSM supplied by current source inverter for field weakening operation is presented in this paper. The adaptive backstepping control system and the backstepping speed observer are presented. The control system is based on multi-scalar variables. The control variables are: dc-link voltage and the output current vector pulsation. The control system was named voltage...

  • Electrical Stimulation Modulates High Gamma Activity and Human Memory Performance

    Publikacja

    - eNeuro - Rok 2018

    Direct electrical stimulation of the brain has emerged as a powerful treatment for multiple neurological diseases, and as a potential technique to enhance human cognition. Despite its application in a range of brain disorders, it remains unclear how stimulation of discrete brain areas affects memory performance and the underlying electrophysiological activities. Here, we investigated the effect of direct electrical stimulation...

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  • Enhanced Activity of P4503A4 and UGT1A10 Induced by Acridinone Derivatives C-1305 and C-1311 in MCF-7 and HCT116 Cancer Cells: Consequences for the Drugs’ Cytotoxicity, Metabolism and Cellular Response

    Activity modulation of drug metabolism enzymes can change the biotransformation of chemotherapeutics and cellular responses induced by them. As a result, drug-drug interactions can be modified. Acridinone derivatives, represented here by C-1305 and C-1311, are potent anticancer drugs. Previous studies in non-cellular systems showed that they are mechanism-based inhibitors of cytochrome P4503A4 and undergo glucuronidation via UDP-glucuronosyltranspherase...

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  • Digital Transformation of Terrestrial Radio: An Analysis of Simulcasted Broadcasts in FM and DAB+ for a Smart and Successful Switchover

    The process of digitizing radio is far from over. It is an important interdisciplinary aspect, involving Big Data and AI (Artificial Intelligence) when it comes to classifying and handling content, and an organizational challenge in the Industry 4.0 concept. There exist several methods for delivering audio signals, including terrestrial broadcasting and internet streaming. Among them, the DAB+ (Digital Audio Broadcasting plus)...

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  • Design of a Shape-Memory-Alloy-Based Carangiform Robotic Fishtail with Improved Forward Thrust

    Publikacja

    - SENSORS - Rok 2024

    Shape memory alloys (SMAs) have become the most common choice for the development of mini- and micro-type soft bio-inspired robots due to their high power-to-weight ratio, ability to be installed and operated in limited space, silent and vibration-free operation, biocompatibility, and corrosion resistance properties. Moreover, SMA spring-type actuators are used for developing different continuum robots, exhibiting high degrees...

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  • Endothelial dysfunction due to eNOS uncoupling: molecular mechanisms as potential therapeutic targets

    Publikacja
    • A. Janaszak-Jasiecka
    • A. Płoska
    • J. M. Wierońska
    • L. W. Dobrucki
    • L. Kalinowski

    - CELLULAR & MOLECULAR BIOLOGY LETTERS - Rok 2023

    Nitric oxide (NO) is one of the most important molecules released by endothelial cells, and its antiatherogenic properties support cardiovascular homeostasis. Diminished NO bioavailability is a common hallmark of endothelial dysfunction underlying the patho‑ genesis of the cardiovascular disease. Vascular NO is synthesized by endothelial nitric oxide synthase (eNOS) from the substrate L‑arginine (L‑Arg), with tetrahydrobiopterin...

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  • Enhanced gas sensing by graphene-silicon Schottky diodes under UV irradiation

    Publikacja
    • K. Drozdowska
    • A. Rehman
    • J. Smulko
    • S. Rumyantsev
    • B. Stonio
    • A. Krajewska
    • M. Słowikowski
    • M. Filipiak
    • P. Sai
    • G. Cywinski

    - SENSORS AND ACTUATORS B-CHEMICAL - Rok 2023

    The effect of ultraviolet (UV) or blue irradiation on graphene/n-doped silicon Schottky junctions toward gas sensing was investigated. Schottky diodes were subjected to oxidizing nitrogen dioxide (NO2, 1–3 ppm) and reducing tetrahydrofuran (THF, 50–200 ppm), showing significantly different responses observed on the currentvoltage (I-V) characteristics, especially under UV light (275 nm). NO2 affected the resistive part of the forward region...

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  • Feasibility Study of Three-Phase Modular Converter for Dual-Purpose Application in DC and AC Microgrids

    Publikacja
    • C. Roncero-Clemente
    • O. Husev
    • O. Matiushkin
    • J. Gutierrez-Escalona
    • F. Barrero-Gonzalez
    • D. Vinnikov
    • R. Strzelecki

    - IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS - Rok 2023

    The modern concept of a universal converter is intended as a power converter suitable for application in both dc or ac grids using the same external connectors. This novel family was recently proposed to allow an easier integration of renewable energy sources and energy storage systems, interfacing with dc/ac grids and/or loads with a minimum redundancy of power switches and passive elements. This kind of solution and applications...

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  • Data Compression in Ultrasonic Network Communication via Sparse Signal Processing

    Publikacja
    • B. Zima
    • O. Reyes Márquez
    • M. Mohammadgholiha
    • J. Moll
    • L. Marchi De

    - Rok 2022

    This document presents the approach of using compressed sensing in signal encoding and information transferring within a guided wave sensor network, comprised of specially designed frequency steerable acoustic transducers (FSATs). Wave propagation in a damaged plate was simulated using commercial FEM-based software COMSOL. Guided waves were excited by means of FSATs, characterized by the special shape of its electrodes, and modeled...

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  • The standard radiated immunity test of an astable multivibrator at a normative field strength

    The dataset presents a result of measurements that are a part of electromagnetic field immunity tests. The radiated, radio frequency, immunity tests were carried out for a typical astable electronic multivibrator. Tests of immunity of electronic systems to radiated radio frequency (RF) disturbances in the frequency range from 80 MHz to 1 GHz are performed...

  • The radiated immunity test of an astable multivibrator for various supply voltages

    The dataset presents a result of measurements that are a part of electromagnetic field immunity tests. The radiated, radio frequency, immunity tests were carried out for a typical astable electronic multivibrator supplied from a power supply with an output voltage of 6V and 7.5 V. Tests of immunity of electronic systems to radiated radio frequency (RF)...

  • Low Frequency Conducted Emissions of Grid Connected Static Converters

    Publikacja

    Pulse-width modulated rectifiers are nowadays commonly used for AC to DC power conversion. PWM rectification technology is very effective and allows for bidirectional power flow with the possibility of power factor improvement and low-order harmonic emission limitation. Unfortunately, employed PWM boost topology results with generation of input current harmonic distortions in a frequency range tightly correlated to modulation frequency....

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  • High Frequency Harmonics Emission in Smart Grids

    Publikacja

    - Rok 2013

    Pulse-width modulated rectifiers are nowadays commonly used for AC to DC power conversion. PWM rectification technology is very effective and allows for bidirectional power flow with the possibility of power factor improvement and low-order harmonic emission limitation. Unfortunately, employed PWM boost topology results with generation of input current harmonic distortions in a frequency range tightly correlated to modulation frequency....

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  • Swapping Space for Time: An Alternative to Time-Domain Interferometry

    Publikacja

    Young's double-slit experiment [1] requires two waves produced simultaneously at two different points in space. In quantum mechanics the waves correspond to a single quantum object, even as complex as a big molecule. An interference is present as long as one cannot tell for sure which slit is chosen by the object. The more we know about the path, the worse the interference. In the paper we show that quantum mechanics allows for...

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  • Postbiotics in oncology: science or science fiction?

    Publikacja
    • A. Kudra
    • K. Kaźmierczak-Siedlecka
    • B. K. Sobocki
    • D. Muszyński
    • J. Polom
    • L. Carbone
    • L. Marano
    • F. Roviello
    • L. Kalinowski
    • E. Stachowska

    - Frontiers in Microbiology - Rok 2023

    The gut microbiome has been increasingly understood to play a critical role in carcinogenesis and cancer disease progression. The most recent research advancements have shown that different tools of microbiota manipulation contribute to gut microbiome–immune–oncology axis modulation, offering exciting opportunities for targeted interventions aimed at improving the efficacy of established anti-cancer therapy. Postbiotics are a new...

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