Temat: probes - Katalog OPAC zbiorów

Skocz do pozycji: 1.

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

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Skocz do pozycji: 2.

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

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Skocz do pozycji: 3.

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

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Skocz do pozycji: 4.

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

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Skocz do pozycji: 5.

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

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Skocz do pozycji: 6.

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

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Skocz do pozycji: 7.

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

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Skocz do pozycji: 8.

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

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Skocz do pozycji: 9.

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 k_v. This paper also presents an analysis of the k_v 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

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Skocz do pozycji: 10.

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

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