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Wyszukujesz frazę "head" wg kryterium: Wszystkie pola


Tytuł:
Head transplant - the newest reports and concerns on planned procedure
Autorzy:
Gołębiowska, Maria
Gołębiowska, Beata
Powiązania:
https://bibliotekanauki.pl/articles/1167190.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
head to body transplant
head transplant
human cephalic anastomosis
Opis:
Transplantation, one of the most intensively developing fields of medicine, is giving patients hope for the chance of "second life" and health. The 21st century medical achievements heralded to achieve more difficult challenges, such as face transplant or lower extremity transplant. Among the futuristic dreams of the scientists, one of the projects - the Head to Body Transplant, stands out as one of the most controversial surgeries of the century. The aim of this study was to present the current state of art in medical aspect on cephalic anastomosis, as well as ethical implications. Among articles in PubMed Medline database related to human cephalic anastomosis, head transplant, head to body transplant keywords, 15 articles were selected for further analysis. Reviewed research presents significant development in conduction of the human cephalic anastomosis project. Most of the crucial parts of the surgery, such as deep profound hypothermia, spinal cord anastomosis - the detachment and fusion with the fusiogenes particles, have been practiced on animal models. The more newest revelations are revealed to the public, the more ethical and technical concerns are raised, primarily in terms of one-center study aprroach, infavourable benefit-cost ratio and futuristic apprehensions of infertility, transsexual or even unnatural life prolongation reasons for performing this type of surgery.
Źródło:
World Scientific News; 2018, 105; 212-217
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sharp-crested weir head losses investigation
Autorzy:
Korniichuk, V.
Khlapuk, M.
Bezusyak, O.
Yasinska, L.
Powiązania:
https://bibliotekanauki.pl/articles/104623.pdf
Data publikacji:
2018
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
flow energy
total head
head losses
nappe
jet flow
Opis:
The work is devoted to the rectangular sharp-crested weir calculation methods improvement. This can be realized by using mathematical model developed on energy and momentum conservation principles. In order to get energy conservation equation within sharp-crested weir we have to know weir head losses. This article presents theoretical and experimental investigations of the sharp-crested weir head losses. The height of the weir plate pw and weir head H are estimated as main operating factors that determine hydraulic weir outbound parameters: threshold depth h and the specific weir flow q. The flow moving over sharp-crested weir suffers sudden vertical contraction and transforms from the uniform flow to a jet. Mentioned above, causes sharp-crested weir head losses. To determine these losses, we propose to use Hind’s formula that describes similar contraction losses in the channel. Experimental investigations proved Hind’s formula application adequacy to evaluate these losses. Sharpcrested weir energy conservation equation that includes head losses is determined. Graphs set out in the article disclose the influence of the main operating factors and their ratio on the relative head losses.
Źródło:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury; 2018, 65, 1; 27-34
2300-5130
2300-8903
Pojawia się w:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Head of State’s Constitutional Liability
Autorzy:
Grabowska, Sabina
Powiązania:
https://bibliotekanauki.pl/articles/594608.pdf
Data publikacji:
2017
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
head of stat
constitutional liability
parliament
constitutional court
referendum
Opis:
The paper aims to introduce the concept of constitutional liability of the President, and the institutions of the President’s constitutional liability. The author presents the liability and its relations with other types of head of state’s liabilities. The presented analysis includes all European countries.
Źródło:
Polish Political Science Yearbook; 2017, 1 (46); 153-167
0208-7375
Pojawia się w:
Polish Political Science Yearbook
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The embarrassment of riches: ‘Head’ words in the Indo-European family
Autorzy:
Gąsiorowski, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/1121045.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Indo-European; 'head' words;
semantics;
Opis:
The notion of HEAD is reflected in the basic lexicon of all known languages; the identification of the head as a distinct and vitally important body part, labelled with a simplex word, seems to be a cross-cultural universal. Thanks to their high frequency of use and their “basic concept” status, words meaning ‘head’ tend to be diachronically stable and therefore important for comparative reconstruction. Their expected retention rate – as estimated on the basis of data from several uncontroversial language families – is on a par with words meaning ‘heart’ or ‘foot’. On the other hand, culture-specific factors may lead to the proliferation of secondary meanings, the rise of stylistically marked near-synonyms, and consequently to locally accelerated lexical evolution. This seems to have happened repeatedly in the Indo-European family, in which not only the oldest reconstructible ‘head’ word, *ḱreh₂- but also secondary, branch-specific terms have often been subject to lexical replacement. This unusual variability of words for head in Indo-European contrasts with the remarkable conservatism of words for several other body-part concepts, such as eye, ear, tooth and heart. In this paper, we shall attempt to identify recurrent patterns of semantic change in the emergence of new synonyms and the polysemic development of inherited ‘head’ words. Insights derived from recent studies of “embodiment” will be used to explain the observed tendencies.
Źródło:
Yearbook of the Poznań Linguistic Meeting; 2017, 3, 1; 101-115
2449-7525
Pojawia się w:
Yearbook of the Poznań Linguistic Meeting
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Head and Neck Lymphomas - Diagnostic Difficulties
Autorzy:
Neskoromna-Jędrzejczak, Aneta
Tyndorf, Marta
Arkuszewski, Piotr
Kobos, Józef
Powiązania:
https://bibliotekanauki.pl/articles/1396619.pdf
Data publikacji:
2012-02-01
Wydawca:
Index Copernicus International
Tematy:
lymphoma
head
neck
diagnostics
Opis:
Malignant lymphomas represent approximately 5% of all malignant neoplasm of the head and neck and may involve nodal or extranodal sites. The head and neck region is the second most frequent anatomical site of extranodal lymphomas (after the gastrointestinal tract). Most are non-Hodgkin lymphomas (NHL) of B-cell lineage. Hodgkin's lymphoma (HL) rarely occurs in extranodal site.The aim of the study was to evaluate head and neck manifestation of lymphoma (both HL and NHL) and emphasize diagnostic difficulties of these pathologies.Material and methods. Retrospective review of medical records of patients diagnosed for lymphomas in our department was performed. Authors analyzed demographic data as well as clinical manifestation and diagnostic trials.Results. 9 patients were included to the study. 7 of them suffered from extranodal NHL and 2 of them from HL (one patient - extranodal and one nodal manifestation). There were diagnostic complications in all cases and final diagnosis was made after surgical material analysis.Conclusions. This data demonstrate low sensivity of fine needle aspiration for identification of lymphoma as well as clinical picture is non characteristic.
Źródło:
Polish Journal of Surgery; 2012, 84, 3; 113-118
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostic sensitivity of ultrasonic mobile flaw detection of head checking type flaws in railway rails
Wrażliwość diagnostyczna ultradźwiękowych mobilnych badań wad typu head checking w szynach kolejowych
Autorzy:
Lesiak, P.
Powiązania:
https://bibliotekanauki.pl/articles/327484.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
wrażliwość diagnostyczna
szyny kolejowe
badanie ultradźwiękowe
wady head checking
diagnostic sensitivity
railway rails
ultrasonic test
head checking flaws
Opis:
This paper presents analysis of diagnostic sensitivity of ultrasonic mobile testing of railway rails done with the help of measurement car. To verify the concept, most hazardous flaws of head checking type were used. These faults cause multiple rail cracks and fractures. The properties of these flaws and testing procedures have been described together with diagnostic sensitivity analysis on the basis of measurements run on a representative section of railway main line.
W pracy przedstawiono analizę wrażliwości diagnostycznej, ultradźwiękowego mobilnego badania szyn kolejowych wagonem pomiarowym. Do weryfikacji wykorzystano niezwykle niebezpieczne wady typu head checking, które powodują liczne pęknięcia i złamania szyn. Omówiono właściwości tych wady, technologię badania oraz przeprowadzono analizę wrażliwości diagnostycznej na podstawie badań reprezentatywnego odcinka magistralnej linii kolejowej.
Źródło:
Diagnostyka; 2008, 2(46); 37-40
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Equivalent stress in a pressure vessel head with a nozzle
Autorzy:
Lewiński, J.
Powiązania:
https://bibliotekanauki.pl/articles/279523.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
pressure vessel
dished head
nozzle-vessel strength
Opis:
The paper is devoted to analysis of a dished head of a pressure vessel subject to internal uniform pressure and provided with a nozzle. A short survey of optimal design of the pressure vessel and its head is presented. The vessel head of a selected optimized shape is then completed by a nozzle, and the equivalent stress pattern is observed and recorded. The axis of symmetry of the nozzle is parallel to that of the vessel. The nozzle is placed in various distances from the axis of symmetry of the vessel. The dimensionless distance e between both axes varies from 0 (i.e. axisymmetric location) up to 0.8 (assuming that the radius of cylindrical part of the vessel is equal to 1). Results of numerical calculation are presented in plots and figures.
Źródło:
Journal of Theoretical and Applied Mechanics; 2014, 52, 4; 1007-1018
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cross-correlation function in identifying head checking defects of the railway rails
Funkcja korelacji wzajemnej w identyfikacji wad head checking szyn kolejowych
Autorzy:
Lesiak, P.
Sokołowski, A.
Wlazło, M.
Powiązania:
https://bibliotekanauki.pl/articles/327852.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
cross-correlation
railway rails
defect head checking
laser scatterometry method
korelacja wzajemna
szyny kolejowe
wada head checking
metoda skaterometrii laserowej
Opis:
The cross-correlation function has been applied to the study of the similarity of the two functions. One of these functions is known and represents a defect type HC (Head Checking) in the railway rail. The second function is unknown and based on cross-correlation function of both functions specifies the parameters of the similarities. These functions correspond to defects whose images have been determined using laser scatterometry method. FFT method has been used to calculate these functions.
Zastosowano funkcję korelacji wzajemnej do badania podobieństwa dwóch funkcji. Jedną z tych funkcji jest znana i stanowi opis wzorca wady head checking (HC) w szynie kolejowej. Druga funkcja jest nieznana. Na podstawie funkcji korelacji wzajemnej obu tych funkcji, określa się parametry ich podobieństwa. Funkcje te reprezentują obrazy wyznaczone doświadczalnie, metodą skaterometrii laserowej. W obliczeniach wykorzystano szybką transformatę FFT.
Źródło:
Diagnostyka; 2017, 18, 2; 65-73
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Neuroendocrine Carcinoma of the Head and Neck – review of literature
Autorzy:
Berger, G
Dawidziuk, T
Chyczewski, L
Powiązania:
https://bibliotekanauki.pl/articles/1401521.pdf
Data publikacji:
2016
Wydawca:
Index Copernicus International
Tematy:
neuroendocrine carcinoma
head and neck
Opis:
Neuroendocrine carcinoma is a rare neoplasm, and its most common location in the head and neck area is the larynx, especially the epiglottis and the supraglottic region. The first case of neuroendocrine carcinoma of the larynx was reported in 1969 by Goldman et al. Expression of the two crucial markers, synaptophysin and chromogranin, along with neural cell adhesion molecule (CD56) should be mentioned among the neuroendocrine features detected on immunohistochemistry. Human papilloma virus (HPV16/18) infection in the laryngeal neuroendocrine carcinoma can be one of the causal factors, and the detection of HPV should be considered as a standard procedure for the diagnosis and treatment.
Źródło:
Polski Przegląd Otorynolaryngologiczny; 2016, 5, 4; 16-21
2084-5308
2300-7338
Pojawia się w:
Polski Przegląd Otorynolaryngologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of Head Defect Images of Railway Rails in Laser Scatterometry
Ocena obrazów wad szyn kolejowych typu head checking w badaniach metodą skaterometrii laserowej
Autorzy:
Lesiak, P.
Sokołowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/215589.pdf
Data publikacji:
2017
Wydawca:
Instytut Kolejnictwa
Tematy:
railway rails
head checking
laser scatterometry method
similarity functions
distance function
szyny kolejowe
wady head checking
metoda skaterometrii laserowej
funkcje podobieństwa i odległości
Opis:
The images of head checking faults of railway rails have been examined by laser scattering method. The studies used the functions of similarity and distance, both for binary images and multi-level quantized ones. The analysis was performed on the basis of numerical calculations, experimentally determined images of samples of these defects. These type of functions have proven extremely useful in evaluating these faults and can be used to classify them.
Dokonano oceny obrazów wad szyn kolejowych typu head checking, zbadanych metodą skaterometrii laserowej. W badaniach wykorzystano funkcje podobieństwa i odległości, zarówno dla obrazów zbinaryzowanych, jak i skwantowanych wielopoziomowo. Analizę przeprowadzono na podstawie obliczeń numerycznych, wyznaczonych doświadczalnie obrazów próbek tych wad. Funkcje tego typu okazały się niezwykle przydatne w ocenie tych wad i mogą być wykorzystywane do ich klasyfikacji.
Źródło:
Problemy Kolejnictwa; 2017, 177; 37-43
0552-2145
2544-9451
Pojawia się w:
Problemy Kolejnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of the position of the head on the functioning of the human body: a systematic review
Autorzy:
Szczygieł, Elżbieta
Fudacz, Natalia
Golec, Joanna
Golec, Edward
Powiązania:
https://bibliotekanauki.pl/articles/2116542.pdf
Data publikacji:
2020-09-17
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
balance disorders
forward head posture
head
respiratory system
proprioception
neck
Opis:
The head is an important element of the biokinetic chain. Under physiological conditions, it should extend along the midline of the body. Due to its location and the fact that it constitutes approx. 6% of the total body weight, many authors believe it has a significant impact on its functioning. The aim of this study was to conduct a systematic literature search and to synthesize the evidence of the impact of the head posture on the functioning of the human body. A systematic review was conducted within 3 databases: PubMed, Medline OVID, and EBSCO, using the following terms: “forward head,” “posture,” “position,” and “neck.” For the analysis, scientific articles published after 2013 were selected. A total of 16 studies matched the inclusion criteria of this systematic review. Their results have proven that the position of the head has a significant effect on the human body. Research findings show that abnormal head position changes affect muscle activity, proprioception, the pattern of breathing and neck pain. This is the first systematic review of the relationship between the head posture, and the functioning of the human body. The results of this study seem to be promising if used in therapeutic practice.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2020, 33, 5; 559-568
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rotary Head Kinematics During Cleaning of Flat Surfaces
Autorzy:
Chomka, G.
Chudy, J.
Powiązania:
https://bibliotekanauki.pl/articles/386999.pdf
Data publikacji:
2012
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
głowica obrotowa
oczyszczanie
rotary head
prolate cycloid
cleaning
postprocessing traces
Opis:
The present article covers the problem of a mathematical description of the trajectory of those postprocessing traces that occur in the process of hydro jet cleaning of flat surfaces with the use of a rotary head. An analysis was conducted of postprocessing traces taking into consideration the provision of their uniform distribution. The determination of the conditions of an effective cleaning will allow such a selection of the working parameters of the head when a surface is obtained of a high quality, i.e. with a uniform degree of the removal of impurities.
Źródło:
Acta Mechanica et Automatica; 2012, 6, 3; 19-26
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Head Teacher’s Leadership Style on Tutor Satisfaction
Autorzy:
Pavlovic, Nebojsa
Powiązania:
https://bibliotekanauki.pl/articles/2031663.pdf
Data publikacji:
2014-06-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
leadership style
people oriented
head teacher
task oriented
tutor satisfaction
Opis:
This quantitative study aimed at establishing the effect that the type of leadership style adopted by the head teacher has on the employed tutor’s satisfaction. The study sample comprised 11 school head teachers and 109 tutors. The research utilized two tools in the collection of data, the first of which was used for head teachers and the other for tutors in the institution. The research instrument used to collect data in relation to this dependent variable was a Job Satisfaction Survey (JSS) questionnaire. This tool comprises 29 questions with Likert-type items that deal with job satisfaction. The results of the study show that the leadership style employed by the head teacher does not affect tutor satisfaction in a statistically significant way.
Źródło:
The New Educational Review; 2014, 36; 266-277
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unpublished Portrait Head of a Young Man From Alexandria
Autorzy:
Fattah, Abdel Basset Ali Abdel
Powiązania:
https://bibliotekanauki.pl/articles/1774261.pdf
Data publikacji:
2021-06-25
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
Graeco-Roman Egypt
Alexandria
portrait head
Flavian period
Opis:
This article presents an unknown portrait head from the Flavian period, preserved in a storeroom in Alexandria (Egypt).
Źródło:
Światowit; 2020, 59; 153-160
0082-044X
Pojawia się w:
Światowit
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changeableness of selected characteristics of the head in the Rzeszów children and adolescents aged 4 to 18 in during a 35-year period
Autorzy:
Perenc, Lidia
Radochońska, Anna
Błajda, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/454763.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
time changes
children and adolescents
head indices
head circumference
Opis:
Introduction. Over the past decades, anthropometric studies have focused more on secular changes in body height and weight, and less on changes in head features. Meanwhile, changing socio-economic conditions, especially the nutritional status of the human population, support the need to document some of the metric head features in children and adolescents. Aim. The aim of this study was to determine whether there has been changes over time in the morphological development of the head with respect to socio-economic conditions at the turn of the last century on sample population of children and adolescents from Rzeszów. Material and methods. In the years 1978/79, 1993/94, 2003/04 and 2013/14, a total of 9041 Rzeszów children aged 4 to 18 were examined. Anthropometric measurements were based on a technique developed by Martin and Saller. The following features were taken into account: head length and width, morphological face height, maximum face width, nose height and width, and head circumference. The relevant head, face and nose indices were calculated from the measured data. New indices for head circumference have also been proposed. Results. Such changes as head elongation, shortening of morphological face and nose height, and widening of the nose from hyperleptorrhinus to leptorrhinus were found in both sexes. Conclusions. 1. During the past 35 years there have been noticeable changes in the morphological characteristics of the head, face and nose. 2. Further follow-up to the development of head features is recommended.
Źródło:
European Journal of Clinical and Experimental Medicine; 2017, 3; 217-232
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł

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