Autor: Torres, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The role of emotional intelligence in attitudes towards elderly patients - comparative study of medical students from rural and urban areas
Autorzy:: Mamcarz, I.
Torres, K.
Mamcarz, P.
Jurek, K.
Torres, A.
Szast, K.
Powiązania:: https://bibliotekanauki.pl/articles/2085487.pdf
Data publikacji:: 2020
Wydawca:: Instytut Medycyny Wsi
Tematy:: emotional intelligence
geriatrics
medical simulation
place of residence
attitude towards elderly patients
Opis:: Introduction. Medical care in geriatrics has its own specificity, and in order to build a successful doctor-patient relationship it is important while studying medicine to learn some functioning aspects of this age group. Objective. The aim of this study is to explore and describe the role of emotional intelligence in the attitudes of medical students towards elderly patients, taking into account their the place of residence. The place of residence has an impact on social relations and socialization, which could effect with disparities in behaviour towards elderly patients. Materials and method. Medical University of Lublin students from rural (N=71; M=23.44 SD=1.80) and urban (N=87; M=23.34; SD=1.38) areas took part in the study. Emotional Intelligence Questionnaire (INTE) and Attitude Towards Elderly Patients Questionnaire (ATEP) were used. Results. There are statistically significant differences between medical students from rural and urban areas in their attitude towards elderly patients (p=0.001), but no differences were observed between rural and urban residents in terms of emotional intelligence (general result, action factor and cognitive factor). Positive correlations were observed between action factor (r=0.322), cognitive factor (r=0.311) and general INTE result (r=0.358) and attitude towards elderly patients in the group of medical students from rural area. Conclusions. Medical students from rural areas are characterized by a more positive attitude towards elderly patients than medical students from urban areas. The predictors of attitudes towards elderly patients are the cognitive factor of emotional intelligence and the place of residence of medical students. The results give the opportunity to design a well-developed programme of a geriatric course which could be matched to the personal predispositions of students.
Źródło:: Annals of Agricultural and Environmental Medicine; 2020, 27, 1; 134-138
1232-1966
Pojawia się w:: Annals of Agricultural and Environmental Medicine
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Evaluation of Guitars and Violins Made using Alternative Woods through Mobility Measurements
Autorzy:: Torres, J. A.
Torres-Martínez, R.
Powiązania:: https://bibliotekanauki.pl/articles/176571.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: mobility
violin
guitar
luthier
Stradivari
Opis:: The feasibility of substituting the types of wood usually employed in the making of guitars and violins was analyzed, but without comparing the properties of involved materials as it is often reported; in this work, the vibrational behavior of twelve guitars and three violins built with alternative types of woods was compared to data of classical instruments available in the literature. In the guitars here measured, the back plate and ribs were not made from traditional woods; while in the violins, only the top plate was made from an alternative type of wood. The results showed that changing the wood of back plate and ribs does not radically affect the typical mobility of a guitar; however, the expected mobility for a violin was not clearly obtained substituting the wood of the top plate. Thus it seems feasible to substitute the wood of back plate and ribs in guitars without causing dramatic changes in their performance; in contrast, a change of the wood type for top plate in violins seems inadvisable unless the design of the top plate is modified to compensate the differences between the woods.
Źródło:: Archives of Acoustics; 2015, 40, 3; 351-358
0137-5075
Pojawia się w:: Archives of Acoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Fatigue design and prevention in movable scaffolding systems
Projektowanie ruchomych systemów rusztowań z uwzględnieniem obciążęń zmęczeniowych
Autorzy:: Coelho, H.
Torres, A.
Pacheco, P.
Moreira, C.
Silva, R.
Soares, J. M.
Pinto, D.
Powiązania:: https://bibliotekanauki.pl/articles/396185.pdf
Data publikacji:: 2017
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: mosty
Movable Scaffolding System
MSS
system ruchomych rusztowań
obciążenia zmęczeniowe
bridge construction
fatigue
Opis:: The Movable Scaffolding System (MSS) is a heavy construction equipment used for casting situ of concrete bridge decks. In the past decades, MSSs have become increasingly complex and industrialized, enlarging its span ranges, incorporating auxiliary elevation machinery and increasing productivity. The tendency nowadays is for strong reutilization and the notion of MSS as a disposable or temporary structure is somehow reductive. The main structure of MSSs may be potentially exposed to fatigue, usually characterized by low number of cycles with significant stress amplitude. Fatigue may be prevented through adequate design; judicious selection of materials; demanding quality control and implementation of robust inspection and maintenance plans.
System ruchomych rusztowań – Movable Scaffolding System (MSS) to ciężki konstrukcja budowlana wspomagająca wykonanie betonowych mostów. W ostatnich dekadach MSS stały się coraz bardziej skomplikowane i uniwersalne, stanowią element nośny dla wielu urządzeń zarówno podczas wykonywania mostu jak i podczas eksploatacji. Główna struktura systemów MSS może być narażona na efekt zmęczenia, obiążenia zwykle charakteryzują się niską liczbą cykli o znacznej amplitudzie naprężeń. Zmęczeniu można zapobiec poprzez odpowiedni projekt i rozsądny dobór materiałów. Jest to konstrukcja wymagająca ścisłej kontroli jakości i wdrożenia solidnych planów inspekcji i konserwacji.
Źródło:: Civil and Environmental Engineering Reports; 2017, No. 25(2); 77-88
2080-5187
2450-8594
Pojawia się w:: Civil and Environmental Engineering Reports
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Low atmospheric pressure and humidity are related with more frequent pulmonary embolism episodes in male patients
Autorzy:: Staskiewicz, G
Torres, K.
Czekajska-Chebab, E.
Pachowicz, M.
Torres, A.
Radej, S.
Opielak, G.
Maciejewski, R.
Drop, A.
Powiązania:: https://bibliotekanauki.pl/articles/50169.pdf
Data publikacji:: 2010
Wydawca:: Instytut Medycyny Wsi
Tematy:: pulmonary embolism
embolism
male
patient
environmental factor
atmospheric pressure
humidity
seasonality
mortality
human disease
meteorological factor
male patient
female patient
occurrence
embolism episode
low atmospheric pressure
Źródło:: Annals of Agricultural and Environmental Medicine; 2010, 17, 1; 163-167
1232-1966
Pojawia się w:: Annals of Agricultural and Environmental Medicine
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The effect of lateral electrical surface stimulation [LESS] on spinal deformity in idiopathic scoliosis
Wplyw bocznej elektrycznej powierzchniowej elektrostymulacji [LESS] na deformacje kregoslupa w skoliozie idiopatycznej
Autorzy:: Kowalski, I M
Torres, M.A.T.
Kiebzak, W.
Pasniczek, R.
Szarek, J.
Powiązania:: https://bibliotekanauki.pl/articles/14404.pdf
Data publikacji:: 2009
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:: idiopathic scoliosis
child
spinal deformity progression
lateral electrical surface stimulation
effectiveness
treatment
rehabilitation
Opis:: Clinical studies were carried out in the period of 2003-2008 at the Provincial Children’s Rehabilitation Hospital in Ameryka near Olsztyn (Poland). The study involved a group of children and youths exhibiting spinal deformity progression in idiopathic scoliosis (IS) of more than 5o per year according to the Cobb scale. Four hundred and fifty patients between 4 and 15 years of age were divided into three groups (n = 150). Group I received 2-hour and group II 9-hour treatment of Lateral Electrical Surface Stimulation (LESS), respectively, whereas group III (control) was treated only with corrective exercises for 30 minutes twice a day. LESS was performed as 24-month treatment with the use of a battery-operated SCOL-2 stimulator manufactured by Elmech, Warsaw, Poland. The effectiveness of this method was confirmed in the treatment of spinal IS in children and adolescent patients, especially when the initial spinal deformity does not exceed 20o according to the Cobb scale. A short-duration electrostimulation – 2 hours daily – was found to produce results similar to those obtained after overnight, 9-hour electrostimulation. Moreover, the analysis of the Harrington prognostic index F confirms the positive effect of LESS in both groups of patients (2 h and 9 h of LESS).
Badania kliniczne prowadzono w latach 2003-2008, w Wojewódzkim Szpitalu Rehabilitacyjnym dla Dzieci w Ameryce k. Olsztyna, w grupie dzieci i młodzieży wykazującej progresję skrzywienia w skoliozie idiopatycznej (SI) powyżej 5O wg Cobba w skali rocznej. Badaniami objęto 450 pacjentów, w wieku od 4 do 15 lat, podzielonych na 3 grupy (n = 150). W grupie I stosowano 2-godzinną terapię metodą Bocznej Elektrycznej Powierzchniowej Elektrostymulacji (Lateral Electrical Surface Electrostimulation – LESS), w grupie II – 9-godzinną, a w grupie III (kontrolnej) – tylko leczenie za pomocą ćwiczeń korekcyjnych wykonywanych 2 razy po 30 min dziennie. Elektrostymulację typu LESS stosowano, w 24-miesięcznym leczeniu za pomocą bateryjnego stymulatora SCOL-2, wytwarzanego w zakładach elektromechaniki medycznej Elmech w Warszawie. Efektywność tej metody oceniano podczas leczenia SI kręgosłupa u dzieci i młodzieży, zwłaszcza w przypadkach, gdy początkowe skrzywienie kręgosłupa nie przekraczało 20o wg metody Cobba. Elektrostymulacja LESS skrócona do 2-godzinnej terapii dziennie wywoływała podobnie korzystne rezultaty do osiąganych podczas elektrostymulacji całonocnej – 9-godzinnej. Także wykonana analiza współczynnika prognostycznego F Harringtona potwierdziła pozytywne efekty oddziaływania metody LESS w obydwu grupach pacjentów (I i II).
Źródło:: Journal of Elementology; 2009, 14, 2; 289-297
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Quadratures of Pontryagin extremals for optimal control problems
Autorzy:: Rocha, E. A.
Torres, D. F.
Powiązania:: https://bibliotekanauki.pl/articles/969990.pdf
Data publikacji:: 2006
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:: Noether's theorem
Kozlov-Kolesnikov integrability
integrability by quadratures
optimal control
Opis:: We obtain a method to compute effective first integrals by combining Noether's principle with the Kozlov-Kolesnikov integrability theorem. A sufficient condition for the integrability by quadratures of optimal control problems with controls taking values on open sets is obtained. We illustrate our approach on some problems taken from the literature. An alternative proof of the integrability of the sub-Riemannian nilpotent Lie group of type (2,3,5) is also given.
Źródło:: Control and Cybernetics; 2006, 35, 4; 948-963
0324-8569
Pojawia się w:: Control and Cybernetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Existence of positive solutions to a discrete fractional boundary value problem and corresponding Lyapunov-type inequalities
Autorzy:: Chidouh, A.
Torres, D. F. M.
Powiązania:: https://bibliotekanauki.pl/articles/255913.pdf
Data publikacji:: 2018
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: fractional difference equations
Lyapunov-type inequalities
fractional boundary value problems
positive solutions
Opis:: We prove existence of positive solutions to a boundary value problem depending on discrete fractional operators. Then, corresponding discrete fractional Lyapunov-type inequalities are obtained.
Źródło:: Opuscula Mathematica; 2018, 38, 1; 31-40
1232-9274
2300-6919
Pojawia się w:: Opuscula Mathematica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Paleoecology of the first Devonian-like sclerobiont association on Permian brachiopods from southeastern Mexico
Autorzy:: Torres-Martinez, M.A.
Vinn, O.
Martin-Aguilar, L.
Powiązania:: https://bibliotekanauki.pl/articles/2082300.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: Brachiopoda
Bryozoa
Hederelloidea
Microconchida
Permian
Roadian
Mexico
Chiapas
Opis:: This paper describes a sclerobiont association from the Paso Hondo Formation (Roadian, middle Permian), Chiapas, Mexico. Different marine invertebrates such as hederelloids, microconchids, bryozoans, and crinoids (represented by holdfasts) encrusted brachiopod shells belonging to Athyridida and Rhynchonellida. This association is similar to those recorded in different Devonian localities, especially by the co-occurrence of microconchids, hederelloids, and bryozoans. Paleoecological analysis revealed that bryozoans were the most abundant sclerobionts, whereas crinoid holdfasts were uncommon. Likewise, hederelloids and microconchids often settled on hosts previously colonized by bryozoans. Most microconchids encrusted rhynchonellid shells. A positive correlation between the size of the hosts and abundance/diversity of sclerobionts was recorded. The distribution analysis suggests that sclerobiont colonization could have been influenced either by inhalant currents of brachiopods, time of exposure, position of hosts, or by combination of all these factors. Moreover, most of commissures and foramens of brachiopods were not covered by epibionts, suggesting that there was a live interaction. Thus, studied brachiopods were likely encrusted syn vivo, and the interaction between sclerobionts and their brachiopod hosts was likely commensal since there is no damage to the brachiopod valves in the form of malformations or borings. On the contrary, the epibiont cover might have served as a natural shield against predators and parasites. The Roadian age of the association is based on the stratigraphic distribution of host brachiopods. The studied association inhabited open waters on a homoclinal carbonate ramp in the Chicomuselo region. Although encrusted brachiopods belong to the biotic Grandian Province, similar sclerobiont communities have not been previously recorded from the Permian of North America or beyond. The described community represents the youngest record of co-occurring microconchids, hederelloids, and bryozoans, as all previously known similar communities originate from the Late Devonian.
Źródło:: Acta Palaeontologica Polonica; 2021, 66, 1; 131-141
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Symbolic computation of variational symmetries in optimal control
Autorzy:: Gouveia, P. D.
Torres, D. F.
Rocha, E. A.
Powiązania:: https://bibliotekanauki.pl/articles/970020.pdf
Data publikacji:: 2006
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:: sterowanie optymalne
variational symmetries
gauge term
nonconservative forces
computer algebra systems
Noether's theorem
first integrals
optimal control
Opis:: We use a computer algebra system to compute, in an efficient way, optimal control variational symmetries up to a gauge term. The symmetries are then used to obtain families of Noether's first integrals, possibly in the presence of nonconservative external forces. As an application, we obtain eight independent first integrals for a sub-Riemannian nilpotent problem (2,3,5,8).
Źródło:: Control and Cybernetics; 2006, 35, 4; 831-849
0324-8569
Pojawia się w:: Control and Cybernetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: A generalized fractional calculus of variations
Autorzy:: Odzijewicz, T.
Malinowska, A. B.
Torres, D. F. M.
Powiązania:: https://bibliotekanauki.pl/articles/205955.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:: generalized fractional operators fractional variational analysis
Euler-Lagrange equations
natural boundary conditions
Noether's theorem
damped harmonic oscillator
Opis:: We study incommensurate fractional variational problems in terms of a generalized fractional integral with Lagrangians depending on classical derivatives and generalized fractional integrals and derivatives. We obtain necessary optimality conditions for the basic and isoperimetric problems, transversality conditions for free boundary value problems, and a generalized Noether type theorem.
Źródło:: Control and Cybernetics; 2013, 42, 2; 443-458
0324-8569
Pojawia się w:: Control and Cybernetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Magnesium biodegradable implants coated with polylactic acid
Autorzy:: Munoz, M.
Rams, J.
Lopez, A.
Matykina, E.
Torres, B.
Powiązania:: https://bibliotekanauki.pl/articles/284077.pdf
Data publikacji:: 2017
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:: implants
biodegradation
magnesium alloys
Źródło:: Engineering of Biomaterials; 2017, 20, no. 143 spec. iss.; 28
1429-7248
Pojawia się w:: Engineering of Biomaterials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Optimal control for a steady state dead oil isotherm problem
Autorzy:: Sidi Ammi, M. R.
Malinowska, A. B.
Torres, D. F. M.
Powiązania:: https://bibliotekanauki.pl/articles/205514.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:: dead oil isotherm problem
optimal control
existence and regularity of solutions
necessary optimality conditions
Opis:: We study the optimal control of a steady-state dead oil isotherm problem. The problem is described by a system of nonlinear partial differential equations resulting from the traditional modelling of oil engineering within the framework of mechanics of a continuous medium. Existence and regularity results of the optima control are proved, as well as necessary optimality conditions.
Źródło:: Control and Cybernetics; 2013, 42, 2; 459-470
0324-8569
Pojawia się w:: Control and Cybernetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Helminth parasites of stone marten (Martes foina) in central Portugal
Autorzy:: Figueiredo, A.
Oliveira, L.
Madeira de Carvalho, L.
Fonseca, C.
Torres, R.T.
Powiązania:: https://bibliotekanauki.pl/articles/6062.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Parazytologiczne
Źródło:: Annals of Parasitology; 2018, 64, 1
0043-5163
Pojawia się w:: Annals of Parasitology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Fungal spores in four catholic churches in the metropolitan area of Monterrey, Nuevo León State, Mexico – First study
Autorzy:: Estrada, A.R.
Torres, E.M.
Vazquez, M.A.A.
Pinero, J.L.H.
Lucio, M.A.G.
Martinez, S.M.S.
Powiązania:: https://bibliotekanauki.pl/articles/52132.pdf
Data publikacji:: 2015
Wydawca:: Instytut Medycyny Wsi
Źródło:: Annals of Agricultural and Environmental Medicine; 2015, 22, 2
1232-1966
Pojawia się w:: Annals of Agricultural and Environmental Medicine
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Airborne pollen of Carya, Celtis, Cupressus, Fraxinus and Pinus in the metropolitan area of Monterrey Nuevo Leon, Mexico
Autorzy:: Rocha-Estrada, A
Alvarado-Vazquez, M.A.
Torres-Cepeda, T.E.
Foroughbakhch-Pournavab, R.
Hernandez-Pinero, J.L.
Powiązania:: https://bibliotekanauki.pl/articles/51592.pdf
Data publikacji:: 2008
Wydawca:: Instytut Medycyny Wsi
Tematy:: Pinus
pollen grain
Celtis
metropolitan area
airborne pollen
Carya
street
private garden
public park
Mexico
Nuevo Leon
plant
atmosphere
Monterrey
garden
Cupressus
Fraxinus
Źródło:: Annals of Agricultural and Environmental Medicine; 2008, 15, 2
1232-1966
Pojawia się w:: Annals of Agricultural and Environmental Medicine
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 16.

Tytuł:: Using visual and force information in robot-robot cooperation to build metallic structures
Autorzy:: Pomares, J.
Gil, P.
Corrales, J. A.
Garcia, G. J.
Puente, S. T.
Torres, F.
Powiązania:: https://bibliotekanauki.pl/articles/384655.pdf
Data publikacji:: 2009
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Opis:: In this paper, a cooperative robot-robot approach to construct metallic structures is presented. In order to develop this task, a visual-force control system is proposed. The visual information is composed of an eye-in-hand camera, and a time of flight 3D camera. Both robots are equipped by a force sensor at the end-effector. In order to allow a human cooperate with both robots, an inertial motion capture system and an indoor localization system are em ployed. This multisensorial approach allows the robots to cooperatively construct the metallic structure in a flexible way and sharing the workspace with a human operator.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 3; 96-101
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: 17.

Tytuł:: Solar generation estimation in electric power systems for prospective frequency control studies
Autorzy:: Martínez-García, A. A.
Torres-Breffe, O. E.
Vilaragut-Llanes, M.
Delgado-Fernandez, O.
Szpytko, J.
Salgado-Duarte, Y.
Powiązania:: https://bibliotekanauki.pl/articles/2172499.pdf
Data publikacji:: 2022
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: green shipping
solar power
electric power systems
energy storage systems
photovoltaic power generation
cuban electrical system
energy sources
photo voltage solar generation
Opis:: Increasing the presence of non-conventional clean energy sources in Electrical Power Systems (EPS) is a global strategic goal. Particularly, photovoltaic systems are attractive due to their versatility, low maintenance cost, easy installation, noiselessness, etc. However, the integration of photovoltaic systems into EPS increases the necessary regulation actions performed by system generators due to stochastic fluctuations of solar radiation, especially on cloudy days. Even using complex models that consider many variables, solar irradiation and its corresponding photovoltaic power generation are difficult variables to forecast with accuracy in cloudy day scenarios. To address this problem, Energy Storage Systems (BESS) have been proposed as a solution to mitigate the variability of photovoltaic generation, which reduce the need to use traditional spinning reserves and provide auxiliary grid services. The BESS selection required to mitigate photovoltaic generation is directly related to the worst-case daily variability of photovoltaic generation in the short term. This paper proposes a practical estimation of daily perspective photo voltage solar generation curve in Electrical Power Systems.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2022, 16, 2; 211--217
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 18.

Tytuł:: Terahertz Detection of Quantum Cascade Laser Emission by Plasma Waves in Field Effect Transistors
Autorzy:: Teppe, F.
Consejo, C.
Torres, J.
Chenaud, B.
Solignac, P.
Fathololoumi, S.
Wasilewski, Z.
Zholudev, M.
Dyakonova, N.
Coquillat, D.
El Fatimy, A.
Buzatu, P.
Chaubet, C.
Knap, W.
Powiązania:: https://bibliotekanauki.pl/articles/1492959.pdf
Data publikacji:: 2011-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 85.30.Tv
07.57.Kp
52.35.-g
Opis:: We report on the resonant detection of a 3.1 THz radiation produced by a quantum cascade laser using a 250 nm gate length GaAs/AlGaAs field effect transistor at liquid nitrogen temperature. We show that the physical mechanism of the detection is related to the plasma waves excited in the transistor channel. The detection is enhanced by increasing the drain current and driving the transistor into saturation regime. These results clearly show that plasma wave nanometer-size transistors can be used as detectors in all-solid-state terahertz systems where quantum cascade lasers act as sources.
Źródło:: Acta Physica Polonica A; 2011, 120, 5; 930-932
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki