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Wyszukujesz frazę "tension" wg kryterium: Temat


Tytuł:
Metodika opredelenija raspredelenija naprjazhenijj v pojase rigelja ramnogo uzla
Method of determining the distribution of tension in the belts beam of moment-resisting knot
Autorzy:
Perminov, D.
Tematy:
wall
tension
belt tension control
rigidity
moment-resisting knot
Pokaż więcej
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Powiązania:
https://bibliotekanauki.pl/articles/77895.pdf  Link otwiera się w nowym oknie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A method to determine the tightening sequence for standing rigging of a mast
Autorzy:
Samson, Leszek
Kahsin, Maciej
Tematy:
pre-tension
standing rigging
rig
tightening sequence
initial tension
Pokaż więcej
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Powiązania:
https://bibliotekanauki.pl/articles/259698.pdf  Link otwiera się w nowym oknie
Opis:
The article proposes an alternative method to determine the sequence of generation of pre-tension forces in standing rigging of a mast. The proposed approach has been verified on both a virtual simulation experiment and laboratory tests. In this method, the desired tension values are obtained using the influence matrix which allows to calculate the effect of tension change in an individual rope on the tension distribution in the remaining ropes in the system. Unlike the presently used method, in which the desired tension distribution is obtained in a long-lasting iterative proces burdened with relatively large errors of final values, the proposed method makes it possible to achieve the final tension distribution in a finite number of steps. In the case of FEM analyses, the new method can be a useful tool for determining an arbitrary distribution of tension forces in ropes via solving a system of linear equations.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charts of the ‘Innocent’ Subjects in the Searching Peak of Tension Tests
Autorzy:
Jaworski, Ryszard
Tematy:
Chart interpretation
Scoring
Peak of Tension
Searching Peak of Tension
Pokaż więcej
Wydawca:
Krakowska Akademia im. Andrzeja Frycza Modrzewskiego
Powiązania:
https://bibliotekanauki.pl/articles/523325.pdf  Link otwiera się w nowym oknie
Opis:
The assessment of physiological parameters of the innocent subjects in the SPOT in the presented cases has its limits, while a comparison of these parameters with the charts of the perpetrators causes doubts as to the methodological soundness (lack of a sufficient number of cases). There are as many as four reasons hindering the assessment. First of all, the number of presented charts of the innocent subjects is small; they are practically isolated cases and with tests featuring mainly names (given names, pseudonyms). Secondly, I did not repeat the SPOT if it did not cause any reaction and at the same time the preliminary assessment of the CQT charts was positive for the subjects. Th is makes it impossible to compare physiological parameters of the subject in at least two SPOT charts in order to assess the evolution of the emotional activation. The parameters recorded during a SPOT were compared with the fi rst CQT chart, but this article does not present them. Another problem results from the fact that the category of the ‘innocent’ includes the charts of two subjects (the witness of the behaviour of the possible perpetrator after the murder and the instigator of a murder). I included them in the groups of the ‘innocent’ only because the version before the examination assumed that they were the murderers, while their reactions to the control questions in the CQT were greater than those to the fundamental relevant question (‘Did you do it?’). As I mentioned above, physiological parameters of the two men in the consecutive CQT charts hinted at intensifi cation of emotions and the subjects themselves also displayed external manifestations of emotions. In principle, their charts should be presented in the group of ‘the perpetrators’. Although the manifestations of emotions were distinct, their assessment was subjective – and it cannot be verifi ed. Both subjects interfered with the examination: one refused to have his blood pressure and pulse recorded and the other interrupted the examination. This behaviour is typical for ‘the perpetrators’. Both subjects were involved in the cases, but not in the way the investigators had originally assumed. Let me add here that this is my opinion and it has not been backed by legal decisions. Physiological parameters of the innocent subjects presented in the SPOT charts can only be assessed visually, because the Lafayette polygraphs which I used did not record them digitally. A visual assessment is not precise and to great extent subjective. Only one parameter – the pulse rate – lends itself to digital assessment, but with the reservations mentioned above.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ kształtu karbu na rozkład naprężeń na jego krawędzi
Effect of notch shape on the stress distribution alongside edges
Autorzy:
Kazberuk, A.
Niedźwiedź, M.
Tematy:
naprężenie
karb
tension
notch
Pokaż więcej
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Powiązania:
https://bibliotekanauki.pl/articles/386749.pdf  Link otwiera się w nowym oknie
Opis:
W pracy porównano wpływ różnych geometrii konturu zaokrąglonego karbu typu V o identycznym kącie rozwarcia i krzywiźnie wierzchołka na rozkłady naprężeń wzdłuż krawędzi karbów. Rozważono przypadki symetrycznego i antysymetrycznego stanu naprężeń w wierzchołku karbu.
The stress field distribution alongside edges of two different infinite V-notch contours was presented. The comparison included hyperbolic notch and wedge with straight edges rounded at the top with the circular arc. The notch opening angles and curvature at notch apices were the same. Two basic stress states – symmetrical (mode I) and antisymmetrical (mode II) were analyzed.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental Investigation of the Relationship Between the Yarn Tension and Bobbin Diameter in the Warping Process
Eksperymentalne badanie zależności pomiędzy naprężeniem przędzy a średnicą szpuli w procesie snucia
Autorzy:
Celik, Ozge
Eren, Recep
Tematy:
unwinding tension
unwinding
bobbin diameter
tension measurement
yarn tension
warping
rozwijanie przędzy
średnica szpuli
pomiar napięcia
naprężenie przędzy
wypaczenie
Pokaż więcej
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Powiązania:
https://bibliotekanauki.pl/articles/233134.pdf  Link otwiera się w nowym oknie
Opis:
Yarns of different types are unwound from bobbins in different processes like warping, weaving, doubling and re-winding. A change in yarn tension from a full to empty bobbin causes serious product quality and machine efficiency problems in processes like weaving and winding. This paper investigates experimentally the relationship between yarn tension and bobbin diameter in the warping process. For this purpose, an experimental set up was built with a laser sensor measuring the bobbin diameter, a tension sensor for measuring yarn tension, a bobbin winding unit, PC, and DAQ card. A software program was developed in the C programming language to read and record the tension and bobbin diameter simultaneously. The unwinding speed and yarn number both had a significant effect on the relationship between the yarn tension and bobbin diameter. The effect of the unwinding speed became more pronounced with yarns getting thicker.
Przędze różnego rodzaju rozwijane są ze szpul podczas trwania różnych procesów, takich jak: snucie, tkanie, skręcanie i nawijanie. Zmiana naprężenia przędzy z całkowicie pustej szpuli ma znaczący wpływ na jakość produktu i powoduje problemy z wydajnością maszyn w procesach takich jak tkanie i zwijanie. W artykule badano eksperymentalnie zależność pomiędzy naprężeniem przędzy a średnicą szpuli w procesie snucia. W tym celu zbudowano eksperymentalną instalację z czujnikiem laserowym mierzącym średnicę szpulki, czujnikiem do pomiaru naprężenia przędzy, zespołem nawijającym szpule, komputerem PC i kartą DAQ. W języku programowania C opracowano program do jednoczesnego odczytu i rejestrowania średnicy szpuli i naprężenia. Stwierdzono, że prędkość odwijania i liczba nitek mają istotny wpływ na zależność między naprężeniem przędzy a średnicą szpuli. Ponadto stwierdzono, że wpływ prędkości rozwijania stawał się wyraźniejszy wraz ze wzrostem grubości przędz.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The model of the local Universe in the framework of the second-order perturbation theory
Autorzy:
Sikora, Szymon
Ostrowski, Jan J.
Opis:
Recently, we constructed the specific solution to the second-order cosmological perturbation theory, around any Friedmann–Lemaître–Robertson–Walker background filled with dust matter and a positive cosmological constant. In this paper, we use the Cosmicflows-4 sample of galaxies from the Extragalactic Distance Database to constrain this metric tensor. We obtain an approximation to the local matter distribution and geometry. We numerically solve for null geodesics for randomly distributed mock sources and compare this model with the Lemaître–Hubble constant inferred from the observations under the assumption of perfect isotropy and homogeneity. We conclude on effects of realistic inhomogeneities on the luminosity distance in the context of the Hubble tension and discuss limitations of our approach.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Diagnosis in Muscle Tension Dysphagia
Autorzy:
Krasnodębska, Paulina
Jarzyńska-Bućko, Agnieszka
Szkiełkowska, Agata
Miaśkiewicz, Beata
Skarżyński, Henryk
Tematy:
dysphagia
Muscle Tension Dysphagia
swallowing
Pokaż więcej
Wydawca:
Index Copernicus International
Powiązania:
https://bibliotekanauki.pl/articles/1397249.pdf  Link otwiera się w nowym oknie
Opis:
Introduction: Patient-reported outcome measures have been used within the otorhinolaryngologic disorders’ field for many years to compare patient’s perception of the severity of symptoms and the effectiveness of a therapeutic approach. Questionnaires that evaluate dysphagia are relatively complex instruments aimed mostly at patients with neurological or malignant diseases. The ICD-10 classification specifies only one broad term – dysphagia (R13). Introduction of Muscle Tension Dysphagia (MTDg) in 2016 by Kang completed the spectrum of the nomenclature. This dysphagia type is defined as a type of laryngeal muscle tension disorder manifesting primarily as swallowing difficulty with or without any accompanying organic cause, laryngeal hyperresponsiveness and/or nonspecific laryngeal inflammation. Aim: Since there were no clear diagnostic and therapeutic perspectives on the group of patients with MTDg, the aim of this work was to analyse selected diagnostic tools used for the evaluation of swallowing disorders in the context of finding the most suitable tools for patients with Muscle Tension Dysphagia. Material and method: The material of the work included 61 patients. Each patient underwent otolaryngologic, phoniatric and speech therapist’s examination, Functional Endoscopic Evaluation of Swallowing (FEES) and filled out questionnaires concerning dysphonia and dysphagia symptoms. Results: The results of the work showed that patients with MTDg were characterised by correct results of FEES examination, prolonged swallowing, features of inappropriate mucous and oropharyngeal muscle function. Conclusions: The Swallowing Disorder Scale (SDS), developed by the authors, correlated best with the cause of dysphagia. The questionnaire corresponded well with the degree of severity. In the diagnostic process of MTDg one of the key tasks is the differentiation with patients with non-normative swallowing patterns. Apart from specialistic consultations with otolaryngologist and speech therapist, while diagnosing MTDg we recommend using objective (FEES, videofluroscopy, SEMG) and subjective (SDS, DHI, EAT-10 surveys) assessment tools. In our opinion, the inclusion of questionnaires to detect reflux syndromes is also important in the causal treatment of ailments.
Dostawca treści:
Biblioteka Nauki
Artykuł

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