Search results for: Marek Gołębiowski

Items from 1 to 20 out of 72 results

article

Comprehensive online estimation of object signals for a control system with an adaptive approach and incomplete measurements

Tadeusz Kwater, Przemysław Hawro, Paweł Krutys, Marek Gołębiowski, more

Bulletin of the Polish Academy of Sciences. Technical Sciences > 2024 > Vol. 72, nr 4 > art. no. e150111

This paper presents the novel estimation algorithm that generates all signals of an object described by nonlinear ordinary differential equations based only on easy-to-implement measurements. Unmeasured signals are estimated by using an adaptive approach. For this purpose, a filtering equation with a continuously modified gain vector is used. Its value is determined by an incremental method, and the...

article

The impact of insecticides containing deltamethrin and cyfluthrin on the composition of surface compounds in the larvae, females and males of Tenebrio molitor

Marta Wojciechowska, Piotr Stepnowski, Marek Gołębiowski

Biomedical Chromatography > 36 > 5 > n/a - n/a

This paper presents the effect of insecticides on the composition of the surface compounds of one of the most harmful insects, Tenebrio molitor, by analysis using GC–MS. As a result of the use of insecticides, the composition of the chemical compounds on the surface of insects changes, depending on the insecticides used. The most numerous groups of the marked compounds were fatty acids, alkanes, esters...

article

Wykorzystanie chromatografii gazowej połączonej ze spektrometrią mas (GC-MS) do analizy lipidów wytwarzanych przez stawonogi

Marek Chajduk, Piotr Stepnowski, Marek Gołębiowski

Analityka : nauka i praktyka > 2022 > nr 3 > 4--9

Dzięki metodzie GC-MS możliwa jest identyfikacja poszczególnych lipidów z wieloskładnikowej mieszaniny związków organicznych pozyskanej z badanych przedstawicieli stawonogów.

article

Semiquantitative Scale for Assessing Brain MRI Abnormalities in Wilson Disease: A Validation Study

Petr Dusek, Lukasz Smolinski, Barbara Redzia‐Ogrodnik, Marek Golebiowski, more

Movement Disorders > 35 > 6 > 994 - 1001

Background MRI is a sensitive method for the assessment of brain abnormalities in Wilson disease, that is, T₂ hyperintensities, T₂ hypointensities, and atrophy, but a validated scoring system for the classification of radiological severity is lacking. The objective of this study was to develop and validate a brain MRI visual rating scale for Wilson disease. Methods The proposed Wilson disease brain...

article

SPME‐GC/MS Analysis of Volatile Compounds Contained in the Insect Larvae of Tenebrio molitor and Leptinotarsa decemlineata before and after Using Insecticides

Marta Wojciechowska, Marek Gołębiowski

Chemistry & Biodiversity > 17 > 4 > n/a - n/a

The larvae of two harmful insect species Tenebrio molitor and Leptinotarsa decemlineata were analyzed. The insects were sprayed with insecticides containing the active substances cyfluthrin and deltamethrin (T. molitor), and thiamethoxam and acetamiprid (L. decemlineata). The sprayed insect larvae were left for 24, 48 and 72 h. Samples were then prepared using SPME fiber to identify the volatile compounds...

article

Cover Picture: SPME‐GC/MS Analysis of Volatile Compounds Contained in the Insect Larvae of Tenebrio molitor and Leptinotarsa decemlineata before and after Using Insecticides (C&B 4/2020)

Marta Wojciechowska, Marek Gołębiowski

Chemistry & Biodiversity > 17 > 4 > n/a - n/a

Cover Picture. Tenebrio molitor and Leptinotarsa decemlineata were sprayed with insecticides containing the active substances cyfluthrin and deltamethrin (T. molitor), and thiamethoxam and acetamiprid (L. decemlineata). For the analysis of volatile compounds of insects, solid‐phase microextraction (SPME) followed by gas chromatography (GC) coupled with mass spectrometry (MS) were used. Alkanes, aldehydes,...

article

Comparison of the organic compounds composition of Hylobius abietis males and females before and after exposure to Beauveria bassiana infection

Marek Gołębiowski, Aleksandra Bojke, Cezary Tkaczuk, Anna Majchrowska‐Safaryan, more

Physiological Entomology > 45 > 1 > 81 - 88

In the present study, the lipid composition from male and female Hylobius abietis is analyzed pre‐ and post‐infection with Beauveria bassiana. The compounds are analyzed by gas chromatography‐mass spectrometry. In the lipids of males and females fatty acids, fatty acid methyl esters, alcohols, amino acids and other organic compounds are identified. The lipids of males and females after B. bassiana...

article

Predicting side-specific prostate cancer extracapsular extension: a simple decision rule of PSA, biopsy, and MRI parameters

Piotr Zapała, Bartosz Dybowski, Ewa Bres-Niewada, Tomasz Lorenc, more

International Urology and Nephrology > 2019 > 51 > 9 > 1545-1552

Objective To develop an easy-to-use side-specific tool for the prediction of prostate cancer extracapsular extension (ECE) using clinical, biopsy, and MRI parameters. Materials and methods Retrospective analysis of patients who underwent radical prostatectomy preceded by staging multiparametric MRI of the prostate was performed. Multivariate logistic regression analysis was used to choose independent...

article

Cyfluthrin and Deltamethrin Induce Changes in the Fat Body Composition of Tenebrio molitor Larvae, Males and Females

Marta Wojciechowska, Piotr Stepnowski, Marek Gołębiowski

Chemistry & Biodiversity > 16 > 5 > n/a - n/a

The purpose of present study was to analyze the chemical composition of the fat body of insects (Tenebrio molitor) and its eventual variation after the application of insecticides. Using the GC/MS technique, the fat body composition of larvae, males and females was analyzed. The insects were stressed with selected insecticides containing cyfluthrin (Cyflok 50EW) and deltamethrin (K‐othrine) recommended...

article

Labellum structure of Bulbophyllum echinolabium J.J. Sm. (section Lepidorhiza Schltr., Bulbophyllinae Schltr., Orchidaceae Juss.)

Natalia Wiśniewska, Monika M. Lipińska, Marek Gołębiowski, Agnieszka K. Kowalkowska

Protoplasma > 2019 > 256 > 5 > 1185-1203

This micromorphological, chemical and ultrastructural study is a continuation of research conducted on the section Lepidorhiza. The Bulbophyllum echinolabium flowers comprised features that characterize a sapromyophilous syndrome, having large, glistening parts that emit an intense scent of rotten meat. The secretory activity was described in the hypochile (nectary in longitudinal groove and in the...

article

Identification and quantitative analysis of lipids and other organic compounds contained in eggs of Colorado potato beetle (Leptinotarsa decemlineata)

Marta Wojciechowska, Piotr Stepnowski, Marek Gołębiowski

Journal of Plant Diseases and Protection > 2019 > 126 > 4 > 379-384

The importance of insects in the environment is huge, not always positive. Harmful insects are burdensome and cause large economic losses. One of the representatives of harmful insects is potato beetle (Leptinotarsa decemlineata). Researching the chemical composition of this insect can be used to more effectively protect plants against this pest. The eggs of Colorado potato beetle (Leptinotarsa decemlineata...

article

Functional simulation model of the axial flux permanent magnet generator

Marek Gołębiowski, Andrzej Smoleń, Lesław Gołębiowski, Damian Mazur

Archives of Electrical Engineering > 2019 > Vol. 68, nr 4 > 857--868

The paper discusses in detail the construction of the Core Less Axial Flux Permanent Magnet generator simulation model. The model has been prepared in such a way that full compatibility with the elements of the SimPowerSystem library of the Matlab/Simulink package is preserved, which allows easy use of the presented simulation model for testing the work of the generator as part of a larger system...

article

Computed tomographic evaluation of cleft palate in one-day-old puppies

Filip Pankowski, Sławomir Paśko, Andrzej Max, Bartłomiej Szal, more

BMC Veterinary Research > 2018 > 14 > 1 > 1-7

Background Cleft palate is a birth defect characterized by a lack of fusion between structures forming the palate. Causes include a multitude of factors, both genetic and environmental. Computed tomography (CT) is widely used to evaluate morphological features and diagnose head disorders in adult dogs. However, there is less data about its use in neonatal dogs. The purpose of this study was to perform...

article

Comparison of volatile compounds released by entomopathogenic fungi

Aleksandra Bojke, Cezary Tkaczuk, Piotr Stepnowski, Marek Gołębiowski

Microbiological Research > 2018 > 214 > C > 129-136

Entomopathogenic fungi are fungal species which are used as a potential source of biopesticides. These fungi produce secondary metabolites which in insects can cause disruption in the normal functioning of their bodies, disease or even death. In order to fully characterize the physiology of entomopathogenic fungi we should identify the volatile organic compounds which are involved in this process...

article

Application of headspace solid‐phase microextraction followed by gas chromatography coupled with mass spectrometry to determine esters of carboxylic acids and other volatile compounds in Dermestes maculatus and Dermestes ater lipids

Magdalena Cerkowniak, Mieczysława I. Boguś, Emilia Włóka, Piotr Stepnowski, more

Biomedical Chromatography > 32 > 2 > n/a - n/a

A constant problem in veterinary medicine, human healthcare, agriculture, forestry and horticulture is the large number of pests, and the lack of effective methods to combat them which cause no harm to the rest of the environment. It is recommended and desired to reduce the use of chemicals and increase the use of agents based on knowledge acquired in the fields of biology, chemistry and agrochemicals...

article

Spinal meningeal cysts in autosomal dominant polycystic kidney disease

Mariusz Niemczyk, Monika Gradzik, Andrzej Kulesza, Magda Fliszkiewicz, more

Nephrology > 23 > 1 > 95 - 96

chapter

Rectifier circuits with magnetically non-coupled chokes

Marek Golebiowski, Leslaw Golebiowski, Damian Mazur, Andrzej Smolen

2017 International Symposium on Electrical Machines (SME) > 1 - 7

2017 International Symposium on Electrical Machines (SME)

When using many rectifying devices, higher harmonic components of currents absorbed by them from the grid become significantly important. They can cause very harmful phenomena connected with grid power outages, glimmering of lights or significant heat losses. The 18 pulse rectifier circuits presented in the article enable to lower the content of higher harmonics of the current absorbed from a grid...

chapter

Autotransformer rectifier circuits with parallel connection without the use of IPT chokes - review

Marek Golebiowski, Leslaw Golebiowski, Damian Mazur, Andrzej Smolen

2017 International Symposium on Electrical Machines (SME) > 1 - 5

2017 International Symposium on Electrical Machines (SME)

When using many rectifying devices, higher harmonic components of currents absorbed by them from the grid become significantly important. They can cause very harmful phenomena connected with grid voltage drop, glimmering of lights or significant power losses. The presented 18 pulse rectifier circuits enable to lower the content of higher harmonics of the grid currents. When considering leakage inductance...

article

Erratum to: Fatty acids and amino acids of entomopathogenic fungus Conidiobolus coronatus grown on minimal and rich media

Marek Gołębiowski, Aleksandra Ostachowska, Monika Paszkiewicz, Mieczysława I. Boguś, more

Chemical Papers > 2017 > 71 > 6 > 1183-1183

The online version of the original article can be found under doi: 10.1515/chempap-2016-0067 .

article

Chlorophenol sorption on multi-walled carbon nanotubes: DFT modeling and structure–property relationship analysis

Marquita Watkins, Natalia Sizochenko, Quentarius Moore, Marek Golebiowski, more

Journal of Molecular Modeling > 2017 > 23 > 2 > 1-8

The presence of chlorophenols in drinking water can be hazardous to human health. Understanding the mechanisms of adsorption under specific experimental conditions would be beneficial when developing methods to remove toxic substances from drinking water during water treatment in order to limit human exposure to these contaminants. In this study, we investigated the sorption of chlorophenols on multi-walled...

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INFONA - science communication portal

Search results for: Marek Gołębiowski

Comprehensive online estimation of object signals for a control system with an adaptive approach and incomplete measurements

The impact of insecticides containing deltamethrin and cyfluthrin on the composition of surface compounds in the larvae, females and males of Tenebrio molitor

Wykorzystanie chromatografii gazowej połączonej ze spektrometrią mas (GC-MS) do analizy lipidów wytwarzanych przez stawonogi

Semiquantitative Scale for Assessing Brain MRI Abnormalities in Wilson Disease: A Validation Study

SPME‐GC/MS Analysis of Volatile Compounds Contained in the Insect Larvae of Tenebrio molitor and Leptinotarsa decemlineata before and after Using Insecticides

Cover Picture: SPME‐GC/MS Analysis of Volatile Compounds Contained in the Insect Larvae of Tenebrio molitor and Leptinotarsa decemlineata before and after Using Insecticides (C&B 4/2020)

Comparison of the organic compounds composition of Hylobius abietis males and females before and after exposure to Beauveria bassiana infection

Predicting side-specific prostate cancer extracapsular extension: a simple decision rule of PSA, biopsy, and MRI parameters

Cyfluthrin and Deltamethrin Induce Changes in the Fat Body Composition of Tenebrio molitor Larvae, Males and Females

Labellum structure of Bulbophyllum echinolabium J.J. Sm. (section Lepidorhiza Schltr., Bulbophyllinae Schltr., Orchidaceae Juss.)

Identification and quantitative analysis of lipids and other organic compounds contained in eggs of Colorado potato beetle (Leptinotarsa decemlineata)

Functional simulation model of the axial flux permanent magnet generator

Computed tomographic evaluation of cleft palate in one-day-old puppies

Comparison of volatile compounds released by entomopathogenic fungi

Application of headspace solid‐phase microextraction followed by gas chromatography coupled with mass spectrometry to determine esters of carboxylic acids and other volatile compounds in Dermestes maculatus and Dermestes ater lipids

Spinal meningeal cysts in autosomal dominant polycystic kidney disease

Rectifier circuits with magnetically non-coupled chokes

Autotransformer rectifier circuits with parallel connection without the use of IPT chokes - review

Erratum to: Fatty acids and amino acids of entomopathogenic fungus Conidiobolus coronatus grown on minimal and rich media

Chlorophenol sorption on multi-walled carbon nanotubes: DFT modeling and structure–property relationship analysis

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