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Tytuł:
One dimensional kinetic model of CMM passive scanning probes
Autorzy:
Krajewski, G.
Woźniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/385246.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
scanning probes
CMM
dynamics
model
Opis:
Scanning probes, also known as measuring probes, are one of the most used solution for coordinate measuring machines (CMM), because of ability to collect large amount of measuring points as well as fast measurements. Fast measurement and accuracy of measuring system have recently determined two critical parameters which decide about effectiveness of the machine. Dynamic is the most significant factor limiting accuracy of measurement. Majority of research into scanning CMM does not separate the performance of the probing system from the other error sources of the machines, so a real error influenced by the probing system is not deeply determined. This paper presents the scanning probe model regardless the machine links. Determined model makes possible to better understand the probing process with higher speeds and optimize the measuring process. Finally (future work), optimization algorithms will be proposed and applied to the probing system and the result will be improved accuracy.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 4; 172-174
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Educational Overview of Ultrasound Probe Types and Their Fields of Application
Autorzy:
De Luca, Ramona
Forzoni, Leonardo
Gelli, Francesca
Bamber, Jeffrey
Powiązania:
https://bibliotekanauki.pl/articles/1953517.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
ultrasound probes typology
technologies
clinical applications
Opis:
The ultrasound (US) imaging market is fast-changing in terms of needs, trends and tendencies as it undergoes rapid innovations. Due to technological improvements, a variety of US probe types is available to cover a wide range of clinical applications. The aim of this paper is to provide information to healthcare professionals to select the appropriate probe for the intended use and the desired performance/price ratio. This work describes the majority of conventional, special and unique US probe types currently available on the market, together with technological insights that are responsible for image quality and a list of some of their clinical applications. The description of the inner transducer technologies allows to understand what contributes to different prices, features, quality level and breadth of applications. The comparison of current US probes and the analysis of advanced performances arising from the latest innovations, may help physicians, biomedical and clinical engineers, sonographers and other stakeholders with purchasing and maintenance commitments, enabling them to select the appropriate probe according to their clinical and economical needs.
Źródło:
Archives of Acoustics; 2021, 46, 1; 3-15
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A radon anomaly in soil gas at Cazzaso,NE Italy, as a precursor of an ML = 5.1 earthquake
Autorzy:
Vaupotič, J.
Riggio, A.
Santulin, M.
Zmazek, B.
Kobal, I.
Powiązania:
https://bibliotekanauki.pl/articles/148908.pdf
Data publikacji:
2010
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
radon
soil gas
Barasol probes
anomalies
earthquakes
Opis:
At Cazzaso (Friuli) in northeast Italy, radon (222Rn) activity concentration in soil gas in a borehole at a depth of 80 cm has been monitored continuously (at a frequency of once an hour) since May 2004, using a Barasol probe (Algade, France). In addition, environmental parameters (air and soil temperature, barometric pressure) have been recorded. The results have been evaluated and the relationship between radon levels and seismic activity is discussed. Correlation between radon concentration and barometric pressure has been observed. Preliminary results have shown a distinct radon anomaly prior to some earthquakes.
Źródło:
Nukleonika; 2010, 55, 4; 507-511
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected methods of electronand ion-diagnostics in tokamak scrape-off-layer
Autorzy:
Sadowski, M. J.
Powiązania:
https://bibliotekanauki.pl/articles/146123.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
diagnostics
electrons
ions
fusion products
probes
tokamak
Opis:
This invited paper considers reasons why exact measurements of fast electron and ion losses in tokamaks, and particularly i n a scrape-off-layer and near a divertor region, are necessary in order to master nuclear fusion energy production. Attention is also paid to direct measurements of escaping fusion products from D-D and D-T reactions, and in particular of fast alphas which might be used for plasma heating. The second part describes the generation of so-called runaway and ripple-born electrons which might induce high energy losses and cause severe damages of internal walls in fusion facilities. Advantages and disadvantages of different diagnostic methods applied for studies of such fast electrons are discussed. Particular attention is paid to development of a direct measuring technique based on the Cherenkov effect which might be induced by fast electrons in appropriate radiators. There are presented various versions of Cherenkov-type probes which have been developed by the NCBJ team and applied in different tokamak experiments. The third part is devoted to direct measurements of fast ions (including those produced by the nuclear fusion reactions) which can escape from a high-temperature plasma region. Investigation of fast fusion-produced protons from tokamak discharges is reported. New ion probes, which were developed by the NCBJ team, are also presented. For the fi rst time there is given a detailed description of an ion pinhole camera, which enables irradiation of several nuclear track detectors during a single tokamak discharge, and a miniature Thomson-type mass-spectrometer, which can be used for ion measurements at plasma borders.
Źródło:
Nukleonika; 2015, 60, 2; 199-206
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wireless system for radiometric measurements
Autorzy:
Jakowiuk, A.
Pieńkos, P. J.
Kowalska, E.
Filipiak, P.
Świstowski, E.
Powiązania:
https://bibliotekanauki.pl/articles/146860.pdf
Data publikacji:
2012
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
radiometric probes
radon concentration measurements
wireless communication
Opis:
Wireless system for radiometric measurements contains probes, for gamma radiation measurements and other probes for radon concentration measurements in air and water. The probes have the form of droplet-tight cylinders powered from a local battery. Measuring data collecting unit, based on a portable computer, communicates directly with the probes in a wireless manner using the WiFi communication network, or through the internet using mobile phone GSM network. Serial port wire connection is also possible. The local battery ensures at least 14 days of continuous operation of the probes. For long term measurements, the probes can also be powered from solar panels. Construction and operation of the probes are described. Results of scintillation probes investigation are given. Detection efficiency of the developed probes is comparable with the laboratory probes offered in our country.
Źródło:
Nukleonika; 2012, 57, 4; 637-641
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Probes for fault localization in computer networks
Autorzy:
Traczyk, W.
Powiązania:
https://bibliotekanauki.pl/articles/308948.pdf
Data publikacji:
2004
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
fault localization
probes
computer networks
partitions
logic design
Opis:
Fault localization is a process of isolating faults responsible for the observable malfunctioning of the managed system. This paper reviews some existing approaches of this process and improves one of described techniques - the probing. Probes are test transactions that can be actively selected and sent through the network. Suggested innovations include: mixed (passive and active) probing, partitioning used for probe selection, logical detection of probing results, and adaptive, sequential probing.
Źródło:
Journal of Telecommunications and Information Technology; 2004, 3; 23-27
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Testing of the delay time of wireless communication of CNC machine tools’ probes and controller
Autorzy:
Jankowski, M.
Woźniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/220903.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
probes
CNC machine tools
communication delay
measurement speed
Opis:
Touch-trigger probes for CNC milling machines usually use wireless communication in the radio or IR band. Additionally they enable triggering signal filtering in order to avoid false triggers of the probe. These solutions cause a delay in trigger signal transmission from the probe to the machine tool controller. This delay creates an additional pre-travel component, which is directly proportional to the measurement speed and which is the cause of a previously observed but not explained increase of the pre-travel with the increase of the measurement speed. In the paper, a method of testing the delay time of triggering signal is described, an example of delay time testing results is presented and the previous, unexplained results of other researchers are analysed in terms of signal transmission delay.
Źródło:
Metrology and Measurement Systems; 2018, 25, 2; 377-386
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ustalenie przyczyn nadmiernych przemieszczeń osiowych wirnika silnika
Determination of causes of excessive axial movements of rotor engines
Autorzy:
Walczak, R.
Goleniewski, G.
Jasiński, K.
Korytkowski, A. W.
Powiązania:
https://bibliotekanauki.pl/articles/258065.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
Tematy:
diagnostyka
maszyna
wiroprądowy czujnik drgań
diagnostics
machine
proximity probes
Opis:
W pracy przedstawiono problem nadmiernych drgań wzdłużnych wirnika silnika napędzającego agregat pompowy. Wirnik został uszkodzony w wyniku drgań. W trakcie badań diagnostycznych sprawdzono zamocowanie silnika oraz osiowanie silnika i pompy. Sprawdzono pracę rozsprzęglonego silnika, który bez pompy pracował poprawnie. Po ponownym zesprzęgleniu praca agregatu nie zmieniła się w porównaniu z warunkami początkowmi. W badaniach diagnostycznych wykorzystano czujniki wiroprądowe, które były zamocowane do połówek sprzęgła po stronie silnika i po stronie pompy. Pomiary wykazały, że przyczyną nadmiernych drgań silnika była praca pompy. Ostatecznie okazało się, że pompa została niepoprawnie dobrana do instalacji. Dobrano za dużą pompę, co spowodowało nierówność ciśnień po dwóch stronach łopatek pompy, co z kolei było przyczyną drgań wzdłużnych pompy i wymuszanie drgań osiowych wirnika silnika.
The problem of excessive vibration of pump-engine aggregate was presented in the paper. The operating personnel claimed that a new engine attached to a pump was damaged due to axial excessive vibrations. The engine anchoring and engine and pump alignments were checked. The engine without the pump operated perfectly well. When the engine and pump were clutched the aggregate vibrations did not changed in comparison to the outset conditions. The proximity probes were attached to pump and engine shafts on the both sides of the clutch. The measurement indicated that the pump caused vibrations. Eventually, it turned out that the pump was oversized, and vibration was caused by pressure unevenness.
Źródło:
Problemy Eksploatacji; 2010, 1; 111-120
1232-9312
Pojawia się w:
Problemy Eksploatacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A 2-Port, Space-Saving, Maintenance-Friendly Pneumatic Probe for Velocity Measurements
Autorzy:
Olczyk, A.
Magiera, R.
Kabalyk, K.
Powiązania:
https://bibliotekanauki.pl/articles/221299.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pneumatic probes
probe calibration
uncertainty of measurements
velocity measurements
Opis:
This paper presents the concept, design and experimental results of tests, in laboratory conditions, of a 2-port, space-saving pneumatic probe. The main features of the probe are a result of restrictions imposed by the functioning environment: a limited space for probe installation, the possibility of processing only two output signals and requirements for simplicity and reliability of the probe. A cylindrical shape of the probe tip is proposed as a general concept, similar to the classic, cylindrical, 3-port probe. The main difference arises in using only two pressure signals: one from the overpressure zone on the front side of the cylinder and another, from the underpressure zone on the back side. After performing an appropriate calibration procedure, it is possible to measure the flow velocity and correct the pressure difference obtained by means of a velocity coefficient kv. This paper also presents an analysis of the kv coefficient uncertainty to evaluate the quality of measurements.
Źródło:
Metrology and Measurement Systems; 2018, 25, 1; 171-185
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conditions of photodynamic therapy of tumor cells examined by carbonized coal and EPR spectroscopy
Autorzy:
Latocha, M.
Pilawa, B.
Pietrzak, R.
Nowicki, P.
Wachowska, H.
Powiązania:
https://bibliotekanauki.pl/articles/284850.pdf
Data publikacji:
2008
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
centra paramagnetyczne
PDT
próby oksymetryczne
EPR
paramagnetic centers
oximetric probes
Opis:
Coal samples carbonized at 600°C and TEMPO probes we applied in oximetry. EPR spectra of medium-ranked coal carbonized at 400, 500, and 700 °C were not sensitive to oxygen. Oxygen effects during photodynamic therapy of tumor cells were tested. Oximetric probes were used to examination of singlet oxygen O2 formation in melanotic CRL-1424 tumor cells irradiated by laser (500 mW, Λ = 662 nm) at the presence of photolon as the photosensitizer. Tumor cells were irradiated during 7, 15, and 30 minutes. Changes in EPR spectra of coal probe and TEMPO after excitation of oxygen O2 from triplet ground state (S=1) to diamagnetic singlet (S=0) state were analysed. Measurements of EPR spectra of coal carbonized at 60O°C and TEMPO in: control cell culture, irradiated cells, and cells irradiated at the presence of photolon, were done. After PDT intensity of EPR lines of the used oximetric probes considerably increases. It was proved that the strongest formation of singlet oxygen in the studied cells appears after 15 minutes of laser irradiation.
Źródło:
Engineering of Biomaterials; 2008, 11, 73; 6-8
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pochodne kumaryny do roli molekularnych sensorów fluorescencyjnych do zastosowań w naukach life science
Coumarin derivatives for the role of molecular fluorescent sensors for the application in life science
Autorzy:
Czarna, M.
Kamińska, I.
Ortyl, J.
Powiązania:
https://bibliotekanauki.pl/articles/134827.pdf
Data publikacji:
2015
Wydawca:
ADVSEO
Tematy:
kumaryna
sensory molekularne
fluoroscencja
coumarin
fluorescence
molecular sensor
molecular probes
fluorophores
Opis:
Fluorescent spectroscopy is an important method in life science which has recently gained popularity. Fluorescent spectroscopy is widely used for example by the researches in the variety of biological structures, intercellular interactions, various kinds of biomolecules and also for understanding of the biochemical processes which take place inside the living organisms. For this purpose, an application of fluorescent sensors and searching for more efficient and more sensitive fluorophore for illustrating, labelling and detection, have become a developing trend in biochemistry, medicine, biology and also in many other chemistry researches. Nowadays, issues which are connected to fluorescence are mainly applied to the newest achievements in the field of fluorescent methods and measurement techniques and also to the development and applications of fluorescent probes, what is closely showed up in this article.
Źródło:
Technical Issues; 2015, 4; 3-10
2392-3954
Pojawia się w:
Technical Issues
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Progress in MJ plasma focus research at IPPLM
Autorzy:
Scholz, M.
Karpinski, L.
Krauz, V. I.
Kubeš, P.
Paduch, M.
Sadowski, M. J.
Powiązania:
https://bibliotekanauki.pl/articles/147514.pdf
Data publikacji:
2012
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
plasma focus
PF-1000 facility
magnetic probes
interferometry
neutron yield scaling
Opis:
The results of studies of the plasma dynamics and neutron emission on a PF-1000 facility in the stage of pinch formation are presented. The measurements were performed using various modifications of the calibrated magnetic probes, 16 frame interferometry, silver activation counters and photomultiplier tube (PMT) neutron probes. The current measurements at a distance of 40 mm from the axis of the electrodes was measured. This dependence agrees well with the known scaling, Yn similar to I4. The evolution plasma density during pinch formation and a neutron emission were study.
Źródło:
Nukleonika; 2012, 57, 2; 183-188
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use and calibration of 5-hole pressure probes to measurement of airflow velocity
Autorzy:
Ruchała, P.
Grabowska, K.
Małachowski, P.
Santos, L.
Back, D.
Powiązania:
https://bibliotekanauki.pl/articles/245287.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
aerodynamic measurement
turbomachinery
measuring devices
flow direction measurement
multi-hole probes
Opis:
Multi-hole probes are simple and robust device to measurement of flow velocity magnitude and direction in wide range of angles of attack – up to 75°. They become popular as they may be easily use to measurement of unknown flow velocity, while optical methods, like PIV or LDA, require some knowledge about the flow for proper setting of measurement devices. Multi-hole probes are also more lasting in comparison with CTA hot-wire probes, which may be damaged by a dust. A multi-hole probe measures air pressure with one pressure tap on its tip and a few (usually 2, 4, 6 or more) taps on conical or semispherical surface of the probe tip. Based on measured pressures, some non-dimensional pressure coefficients are calculated, which are related to flow velocity direction (i.e. two angles in Cartesian or spherical coordinate system) and magnitude. Finding relations between these parameters is relatively complex, which for years was limiting application of multi-hole probes. The article summarizes methods of multi-hole probes calibration and use, which may be classified as nulling and non-nulling methods or – with other criteria – as global and local methods. The probe, which was presented in the article, was the 5-hole straight probe manufactured by Vectoflow GmbH and calibrated in the stand designed and manufactured at the Institute of Aviation. The local interpolation algorithm has been used for calibration, with some modifications aimed on mitigate of mounting uncertainty, which is related with the non-alignment of flow velocity direction and probe axis Results of calibration showed that the accuracy of presented methodology is satisfactory. The standard measurement uncertainty was assessed for 0.2° for the pitch angle and yaw angle, which is better than accuracy declared by the probe’s manufacturer (1.0°). The measurement uncertainty of the flow velocity is approximately 0.12 m/s, similarly like in manufacturer’s data.
Źródło:
Journal of KONES; 2018, 25, 2; 319-327
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oblicza wojny w kontekście teorii mediów Marshalla McLuhana
Autorzy:
Kukiełko-Rogozińska, Kalina
Tomanek, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/645405.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Slawistyki PAN
Tematy:
Probes/iProbes
extensions of man
figure/ground
Marshall McLuhan
Rita Leistner
Opis:
Faces of war in the context of Marshall McLuhan's media theoryThe article shows how Marshall McLuhan’s media theory is used to analyze photographs taken with an iPhone. The reflections were inspired by the blog of the Canadian photographer Rita Leistner, who participated in the media project aimed at familiarizing American soldiers’ families and friends with everyday life of the military contingent in Afghanistan. Leistner, for the first time in her career, used a smartphone instead of professional photographic equipment. Her decision was motivated by the need to edit photographs easily and publish them quickly on the Internet. The result of her work was a blog, titled Looking for Marshall McLuhan in Afghanistan. To describe her photographs, Leistner uses selected concepts defined by McLuhan in the second half of the 20th century: probe, extension of man or figure-background dichotomy. In consequence, the technological face of war can be better understood by the viewers of the materials she prepared. Oblicza wojny w kontekście teorii mediów Marshalla McLuhanaW artykule przedstawiono sposób wykorzystania teorii mediów Marshalla McLuhana do analizy zdjęć wykonanych iPhone’em. Inspiracją do tych rozważań jest blog kanadyjskiej fotografki Rity Leistner, uczestniczki projektu medialnego, którego celem było zapoznanie rodzin i przyjaciół amerykańskich żołnierzy z codziennym życiem wojskowego kontyngentu w Afganistanie. Leistner, po raz pierwszy w karierze, używała smartfonu zamiast profesjonalnego sprzętu fotograficznego. Wynikało to z konieczności łatwego edytowania zdjęć i ich szybkiego umieszczania w internecie. Efektem tej pracy jest blog zatytułowany Looking for Marshall McLuhan in Afghanistan. Aby opisać swoje fotografie, Leistner użyła bowiem wybranych koncepcji sformułowanych przez kanadyjskiego myśliciela w drugiej połowie XX wieku: sondy, przedłużenia człowieka czy dychotomii figura/tło. Dzięki temu zabiegowi odbiorcy jej fotografii mogą lepiej zrozumieć technologiczny i medialny wymiar wojny.
Źródło:
Adeptus; 2017, 10
2300-0783
Pojawia się w:
Adeptus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sole stilbazoliowe jako sondy fluorescencyjne do monitorowania lokalnej lepkości i pH roztworów
Stilbazolium salts as fluorescence probes for monitoring local viscosity and pH of solutions
Autorzy:
Bajorek, A.
Wrześniewska, I.
Pietrzak, M.
Powiązania:
https://bibliotekanauki.pl/articles/1207619.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Inżynierów i Techników Przemysłu Chemicznego. Zakład Wydawniczy CHEMPRESS-SITPChem
Tematy:
sondy fluorescencyjne
jodki styrylopirydyniowe
jodki styrylochinoliniowe
fluorescent probes
styrylopirydyniowe iodides
iodide styrylochinoliniowe
Opis:
Serię 7. barwników stilbazoliowych, p-podstawionych jodków 2- i 4-styrylochinoliniowych oraz 2- i 4-styrylopirydyniowych otrzymano przez kondensację aldehydu 4-(N,N-dimetyloamino)benzoesowego oraz aldehydu 4-(N,N-dimetyloamino)-1-naftoesowego z jodkami N-podstawionych pikolin i metylochinolin. Wyznaczono właściwości spektroskopowe otrzymanych związków w rozpuszczalnikach znacznie różniących się polarnością, oraz zbadano ich przydatność jako sond fluorescencyjnych do badania lokalnej lepkości i pH roztworów.
A series of p-substituted 2- or 4-styrylquinolinium iodides and 2- or 4- styrylpyridinium iodides were prepared by the condensation of 4-(N,N-dimethylamino)benzaldehyde and 4-(N,N-dimethylamino)-1-naphthaldehyde with N-substituted picolines and methylquinolinium iodides. Spectroscopic properties of the dyes are characterized in organic solvents. These dyes were then tested as fluorescence probes to study the local viscosity and pH of the solutions.
Źródło:
Chemik; 2011, 65, 4; 255-260
0009-2886
Pojawia się w:
Chemik
Dostawca treści:
Biblioteka Nauki
Artykuł

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