Dissertations / Theses on the topic 'Effetto "glow"'

In this study, differences in glow curves of Mn doped LTB powder samples synthesized with solid and wet synthesis methods and doped by using solid and wet doping techniques were investigated. Firstly, LTB was synthesized by using wet synthesis method which mainly comprises dissolution of reactants in water as solvent. Second way to produce LTB which was used in this study was solid synthesis method. In solid synthesis method, reactants were mixed in powder form. In the second part of the study, LTB produced by two different methods were doped with Mn and additionally Ag, Mg or P by using two different doping techniques. In order to see structural differences between differently synthesized and differently doped LTB samples which contained different amount of dopant powder X-Ray Diffraction (XRD) method was employed. Besides, FTIR (Fourier Transform Infrared) spectroscopy analyses were performed in order to detect differences in the bond structure caused by doping. Additionally, Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES) was used to determine the actual amount of dopant in LTB. Also morphological structures of samples were compared by using Scanning Electron Microscopy (SEM). Thermoluminescence measurements were performed with (TLD) Thermoluminescence Dosimeter equipment. XRD and FTIR analysis showed that syntheses of products were done in well success. Addition of dopants did not cause any changes in structural or bonding properties of LTB. It was possible to observe that, synthesis and doping methods and dopant concentration effect the thermoluminescence glow curves of doped LTB.

This article describes the compositional depth profiling (CDP) of diamond-like carbon (DLC) layers by Glow Discharge-Optical Emission Spectrometry (GD-OES). The DLC layers were deposited on flat steel samples. Analysis by using a Charge Coupled Device (CCD) GD-OES instrument revealed saturation effects of the carbon lines at 156 nm and 165 nm. Therefore, the application of these lines for CDP of DLC layers is not possible. A third line at 193 nm was not affected by this saturation effect and is therefore a good choice for calibration. A second effect was observed as a non-flat crater in combination with large differences of the sputtering rate factor of the substrate (1.1) and the DLC (0.032) led to an unusual behaviour at the interface between the DLC layer and substrate. Both measurements of the crater shape and of the sputtered coating weight up to the interface and just behind it showed clearly that about 30% of the DLC layer remains at the crater edge, once the crater centre reaches the interface. This was found to be the main reason for the incorrect DLC-layer thickness, if the intersection between the carbon and iron concentration was used as a measure for the end of the DLC layer.

The effects of added oxygen gas on analytical glow discharges (GD) - , significant changes in electrical characteristics, and emission line intensities of both analyte and carrier gas (usually Ar) - have been shown experimentally and predicted by computer models. However, past experimental studies were either limited to one or two spectral lines for each element, or used oxygen concentrations far higher than those likely in analytical work. These changes can seriously affect both the stability of the glow discharge and the analytical results. Contamination by oxygen traces can be curtailed by using high purity carrier gas, modern vacuum techniques and a “clean” instrument. However, the complexity of discharge processes is far greater when oxygen traces are present in the sample either as constituent such as Fe2O3, Ti2O3 and Al2O3 or within an alloy. Investigations were carried out in three separate locations - at Imperial College London (IC), The Swiss Federal Laboratories for Materials Science & Technology EMPA, Thun, Switzerland and The Leibniz-Institut für Festkörper- und Werkstoffforschung IFW, Dresden, Germany. Optical spectra generated in pure argon, Ar/O2 and Ar/H2 plasmas have been recorded using the IC high resolution vacuum UV Fourier transform spectrometer allowing for the first time a detailed study of the effects of added oxygen on observed intensities of emission lines from a large number of energy levels; these spectra have been compared, again for the first time, with spectra from a calamine sample (hot rolled alloy steel with oxide layer) in a pure argon plasma. A Specturma GDA650 instrument was used to record time-resolved spectrochemical information during the analysis of calamine. Glow discharge time of flight mass spectrometry (GD-TOFMS) experiments were carried out at EMPA with iron, titanium, copper, gold and iron oxide samples. Changes in emission intensities and ion signals of both analyte and carrier gas with addition of O2 are reported and discussed and compared to the cases of H2 & N2 additions.

This thesis brings together different scientific and engineering disciplines, as well as current legislation, on the subject of unwanted night-time lighting effects on humans and the biosphere. The assessment criteria of Australian Standard AS4282-1997 Control of the obtrusive effects of outdoor lighting are reviewed and criteria incorporating the quantity, quality, spectral composition of light, and exposure time, are proposed to improve light engineering practice. The immediate direct concerns of humans are considered as well as the effects on biota generally in the environment, particularly as outdoor artificial lighting proliferation has the potential to change the environment for human habitation in the longer term.

The world’s largest particle accelerator, Large Hadron Collider, located at CERN outside Geneva performed its first proton-proton collisions in November 2009. One of the four main experiments is LHCb, studying rare decays of hadrons containing the beauty quark. An essential part of the particle identification in LHCb is made by the two Ring Imaging Cherenkov detectors. These detectors use pixel Hybrid Photon Detectors for detection and imaging of Cherenkov rings. This paper reports on measurements carried out on the Hybrid Photon Detectors, including a discussion of the results. In particular, ageing effect and image stability are studied. A fraction of the photon detectors show a degradation in performance within these fields.

Världens största partikelaccelerator, LHC, belägen vid CERN utanför Genève utförde sina första proton-proton kollisioner i November 2009. Ett av de fyra huvudexperimenten är LHCb, som studerar sällsynta sönderfall av hadroner innehållande b kvarken. En viktig del av partikelidentifikationen i LHCb görs av de två RICH detektorerna. Dessa använder hybrida fotondetektorer för detektering och avbildning av Cherenkov ringar. Denna rapport handlar om mätningar utförda på dessa hybrida fotondetektorer, med en diskussion av resultaten. I synnerhet studeras åldringseffekter och bildstabilitet. En andel av fotondetektorerna visar en degradering i prestanda inom dessa områden.

Methylglyoxal (MG), a highly reactive dicarbonyl accumulates after myocardial infarction (MI), causing adverse remodelling and cardiac dysfunction. We hypothesized that therapy using bone marrow cells (BMCs) overexpressing glyoxalase1 (Glo1), the main enzyme that metabolizes MG, injected into mouse MI model would translate into better survival of transplanted cells and improve their therapeutic effect. We found that Glo1 expression is significantly reduced at 7 days post-MI. Glo1 BMCs exposed to MG in vitro displayed greater angiogenic potential and reduced reactive oxygen species production compared to wild type (WT) BMCs. However, in the mouse MI model, Glo1 BMCs did not improve cardiac function or vascularity or reduce scar formation compared to WT BMCs and saline treatments. In conclusion, Glo1 overexpression in BMCs does not confer superior therapeutic efficacy for treating MI under the conditions tested.

Les décharges contrôlées par barrière diélectrique (DBD) homogènes à pression atmosphérique sont une alternative pour réaliser des couches minces sur de grandes surfaces, en continu, sans système de pompage. La physique de ces décharges tout comme les propriétés des couches minces obtenues sont bien établies en excitation sinusoïdale basse fréquence (< 200 kHz) et radiofréquence (13,56 MHz). L’objet de cette thèse est d’étendre le domaine de fonctionnement de ces décharges dans un mélange Penning Ar/NH3. Pour ce faire, un dispositif original a été mis au point permettant de faire varier la fréquence d'excitation en tension sinusoïdale entre 50 kHz à 18 MHz. La DBD nanopulsée répétitive a également été étudiée. L’objectif est d’identifier de nouveaux modes de fonctionnement de la DBD homogène et d’en maximiser la puissance pour augmenter la vitesse de dépôt de couche mince tout en maintenant une qualité compatible avec les applications. Dans un mélange Ar-NH3, le régime de fonctionnement de la décharge transit de luminescent (GDBD) à Townsend (TDBD) vers 250 kHz puis à RF-DBD à partir de 3 MHz. Les mesures électriques et optiques qui ont été réalisées montrent que la puissance moyenne des décharges homogènes augmente d'un facteur 30 entre les régimes GDBD et RF-DBD (jusqu'à 35 W/cm3) tandis que la tension d'amorçage est réduite d'un facteur 6. Ces observations couplées aux spectres d’émission des décharges indiquent que la densité d’électrons augmente de plusieurs ordres de grandeur alors que leur énergie décroit. Ces résultats s’expliquent par un changement de mécanisme d'ionisation avec un rôle dominant de l'émission d'électron secondaire à la cathode en basse fréquence (GDBD et TDBD) tandis que l'ionisation en volume domine en RF-DBD. Les deux transitions entre les régimes GDBD-TDBD et TDBD-RF-DBD sont étudiées. La première est liée au temps de transit des ions de l'anode vers la cathode qui devient plus long que la demi-période. En conséquence, la chute cathodique ne se forme pas. La deuxième transition est liée au piégeage des ions puis des électrons qui dépend de la tension appliquée, de la valeur de l'espace interélectrode et de la fréquence. Ces régimes de décharges sont comparés au régime nanopulsé répétitif (NPR-DBD). Les conditions conduisant à une décharge homogène ont été trouvées. La puissance maximale en régime homogène est de 17 W/cm3 ce qui est 17 fois plus élevé que pour un régime sinusoïdal à même fréquence. Elle est obtenue pour une fréquence de répétition de 30 kHz avec un pulse de tension de 10 ns. Les dépôts de nitrure de silicium et d’oxyde de silicium obtenus à partir de SiH4 avec des GDBD, RF-DBD et NPR-DBD ont été étudiés. Dans tous les cas, la vitesse de dépôt est définie par la puissance de la décharge. L'augmentation de la puissance de la décharge avec la fréquence permet d'augmenter la vitesse de dépôt de 30 à 90 nm/min. Néanmoins avec l'utilisation de silane à température ambiante, des nanoparticules se forment en RF lorsque la puissance de la décharge est forte. La modulation d'amplitude empêche la formation des poudres. Pour ce faire l'énergie injectée pendant le Ton doit être inférieure à 100 µJ. Comme les précurseurs ne sont plus consommés par la formation de poudres, ils sont disponibles pour la croissance de la couche ce qui double la vitesse de dépôt par rapport au continu pour la même puissance moyenne. L'augmentation de la vitesse de dépôt sans poudre avec la puissance moyenne nécessite une augmentation de la fréquence de modulation (> 1 kHz) ce qui implique un Ton de plus en plus court pour limiter l'énergie injectée.Ce travail a mis en évidence un nouveau régime de décharge, la TDBD, en Ar-NH3. Il a permis de comparer les GDBD, TDBD, RF-DBD et NRP-DBD dans la même configuration de décharge. Pour la première fois des dépôts de couches minces ont été faits par RF-DBD et il a été montré que la modulation du plasma peut augmenter significativement la vitesse de dépôt
The homogeneous discharge controlled by dielectric barrier at atmospheric pressure and their applications are a promising field of activity because of their advantages in contrast with the low pressure processes, especially for the on line treatment of large surface without pumping system. The physics of these discharges as the thin film properties obtained are well established with low frequency sinusoidal (<200 kHz) and radiofrequency excitation (13.56MHz). This is what is explored in this thesis aimed to find and explore new modes of homogeneous DBD and maximizing the power to optimize the deposition rate while maintaining quality thin layers. To achieve this goal, an original device has been developed varying the excitation frequency from 100 kHz to 18 MHz. The frequency increase on this range have many consequences. In an Ar-NH3 mixture, the discharge regime becomes successively a glow (GDBD) then Townsend (TDBD) around 250 kHz then RF-DBD from 3 MHz. The electrical and optical measurements that have been done show that the average power of the homogeneous discharges increases by a factor of 30 between GDBD regime and RF-DBD regime (up to 35 W/cm3) while the breakdown voltage is reduced by a factor 6. These observations coupled to the discharge emission spectra indicate that the electron density increases by several orders of magnitude while their energy decreases. These results are due to a change of the ionization mechanism with a dominant role of the secondary electron emission at the cathode in low frequency regime (GDBD and TDBD) while the volume ionization is dominate in RF-DBD. Both transitions between GDBD-TDBD regimes and TDBD-RF-DBD are studied. The first is related to the ion transit from the anode to the cathode which becomes longer than the half-period. In consequence, the cathode fall is not formed. The second transition is related to ions and electrons trapping which depends on the applied voltage, the value of the inter-electrode space and frequency.These discharges regime are compared to Nanopulsed repetitively discharge (NPR-DBD). The conditions leading to a homogeneous discharge are found. In homogeneous regime the maximum of the discharge power is 17 W/cm3 which is 17 times higher than for a low sinusoidal voltage for the same frequency. It is obtained for a repetition frequency of 30 kHz with a 10 ns voltage pulse. Hydrogenated silica and silicon nitride thin film obtained from SiH4 with GDBD, RF-DBD and NPR-DBD were studied. In all cases, the deposition rate is defined by the discharge power. The increase of the discharge power with the frequency increases the deposition rate from 30 nm/min to 90 nm/min. However with the use of silane at room temperature, nanoparticles are formed in RF regime when the discharge power is high. The amplitude modulation allows to prevent the formation of powders. AS far as the energy injected during Ton is less than 100 μJ. As the precursors are not consumed by the formation of powders, they are available for the growth of the layer thereby doubling the deposition rate compared to the continuous process for the same average power. Increasing the growth rate without powders with the average power requires an increase in the modulation frequency (> 1 kHz) i.e. a short Ton to limit the injected energy. Thus this work has highlighted a new discharge regime, the TDBD in Ar-NH3 and compared the GDBD, TDBD, RF-DBD and NRP-DBD discharge in the same configuration. For the first time, RF-DBD coating have been made and it has been shown that modulation of plasma, although it decreases the discharge power, can significantly increase the deposition rate

碩士
國立澎湖科技大學
食品科學研究所
101
The aim of this study, was to examine Taiwan’s production of Taikeng brown rice species. The germination of the brown rice material was prepared by 1kV, 2kV and 3kV plasma processing for the experimental group; there was no plasma treatment of the brown rice for the control group, and germination was verified at 0 h, 12 h, 18 h and 24 h, respectively. The different low plasma voltage processing conditions were explored, including brown rice bud, water absorption, germination rate, changes in dietary fiber content of α-amylase, texture analysis, GABA content, total antioxidant capacity changes and DPPH radical scavenging ability. The results showed that shoot, water absorption rate, germination rate, dietary fiber, and α-amylase were germinated by 3kV in the 24-h sample; its increase was the most obvious trend, and its values were: 1.405 mm, 30.25%, 61.67%; 0.131 (mg /g); 1.20 (unit /g) respectively. Texture analysis revealed that, its hardness was significantly lower than the control group’s after the plasma treatment of brown rice. With the 3KV plasma treatment germination for 24 h, the hardness decreased by 21.56 N to18.31 N and control group’s was reduced by 30.31 N to 20.56 N.In the GABA determination of the plasma treatment of brown rice samples, the GABA content was significantly higher than the control sample’s, to the 3kV plasma processing content of the sample, up to 28.10 (mg/100g), with the control group to 19.66 (mg/100 g). Total antioxidant capacity increased with increasing germination time, the strongest of which was the 3kV plasma treatment of brown rice samples after 24 h germination, in regard to total antioxidant capacity of 10.54 (mg / g), while the control group was 7.75 (mg /g). From the experimental results, the germination of brown rice under low-pressure plasma treatment can enhance the germination efficiency and increase the functional germinated brown rice, so that brown rice products will be developed with high nutritional value.

碩士
國立澎湖科技大學
食品科學研究所
102
After the rice storage period, the quality will decrease. It is compared with the aged rice and new rice for hard to cooked and the color, flavor is not good. The texture had hard after cooking, lower the viscosity, and the consumer is difficult to accept the flavor and texture. A novel processing technology is developed to modify aged rice in a more selective way with the help of low-pressure plasma.In this study, we pioneered Taikeng 9 (TK9) for the treatment.The germination of the aged material was prepare by 1kV,2 kV and 3kV plasma process. The plasma treatment results in an etching of aged rice surface, which allows water to be easily absorbed by the rice kernel during soaking. After plasma treatment, the cooking time of aged rice is reduced, and the cooked aged rice has a soft texture and is easier to chew. In addition, the increment of the iodine-stained area indicates that the kernel structure of aged rice is substantially affected by plasma. The continuous pasting viscocity found that,the peak viscocity,breakdown viscocity, maintained its strength.The final viscocity had a rising trend. Thus,plasma treatment can be used to improve the cooking properties and the quality of aged rice.

碩士
中原大學
化學工程研究所
96
In this study, two mathematical models for Ar/O2 APGD was developed: A zero-dimensional model for medium-frequency APGD, and one-dimensional model for pulsed-powered APGD. The influence of power and oxygen fraction on the plasma characteristics is investigated by the developed model. The effect of dielectric later plasma characteristic is also studied in the one-dimensional. The main reaction pathway in Ar and Ar/O2 atmospheric plasma was realized by the rate-of-production analysis. The zero-dimensional plasma model shows that the main active species in Ar atmospheric plasma include metastable dimer argon molecules (Ar2*), dimer argon ions (Ar2 +), and electron (e). It was found that O2 + & O2 - become the major ionic species, when 1% O2 is added to Ar plasma. And O2 addition also reduces electron and Ar metastable density, and generates copious amounts of ozone. In one-dimensional plasma model, the addition of oxygen significantly reduces metastable species density. The electron temperature first decreases then increases when oxygen fraction is increased. The dielectric layer plasma model show that the system with dielectric layer can generate more electrons and have a high average electron temperature than that without dielectric layer under the same input power. The discharge voltage significantly reduces when dielectric layer is added into atmospheric plasma system.

碩士
國立臺灣大學
食品科技研究所
89
The effects of low-pressure glow plasma (10-2 Torr, 2KV) and corona discharge on different starch granules [cassava, corn, waxy corn starch, 70% high amylose amylomaize, potato, indica rice (KSS7), japonica rice (TNu67), sweet potato and wheat starches] were investigated. Using SEM, HPSEC, spectrophotometry, X-ray diffractometry and DSC analyzed the changes of physicochemical properties of starch by low-pressure glow plasma or corona discharge treatment. Pores were observed on the surface of starch granules from the SEM of the sample after 30 min of low-pressure glow plasma treatment, especially for potato, cassava and waxy corn starches. The pH values of plasma treated starches were significantly decreased, which was attributed to the oxidation of starch molecules. The profile of HPSEC for the treated starches were shifted backward, and the peak corresponding with amylopectin was reducing, implying the depolymerization of starch molecules occurred during the plasma treatment. This phenomenon is also more pronounced with potato, cassava and waxy corn starches. During the treatments with different gases, oxygen and ammonia would cause the higher degree of oxidation. The absorbance of starch-iodine complex of the plasma treated sample was also decreased. Oxidation and depolymerization of starch were likewise detected in corona discharge treated 1:1 (w/w) concentrated starch batter, but the degree of effect was much lower than that of corresponding plasma treated one. The addition of NaCl or KI into potato starch caused the decrease of oxidation or depolymerization. This might be due to the result of complex formation between salt and starch or/and the electrostatic interaction between salt and starch. Further study in this area may facilitate the development of the novel process for the manufacturing starch derivatives.

BACKGROUND: Implants have been widely used in the medical field. It was adopted in dentistry, offering patients replacement of missing teeth. Researchers have been investigating techniques to improve implants’ survival. Among these techniques is plasma glow discharge. Radio-frequency Glow discharge (RGD) is a surface treatment and sterilization technique with the aim to improve the titanium oxide layer for better osseointegration. Previous studies have evaluated its effect on non-human cell lines with promising results. Up to date, there is no report on how RGD surface treatment of titanium affects normal human osteoblasts. MATERIAL AND METHODS: Human bone fragments were obtained from dental extraction sites and were processed to culture normal human osteoblasts. Cells were seeded on three different surfaces at a concentration of 1x105 cells per plate; Titanium discs with and without Argon RGD (ARGD), and tissue culture plates (TCP). Dishes were allocated to 3 timelines: 16 hours, 7 days and 14 days. The outcome measures were cell attachment, cell number, alkaline phosphatase and osteocalcin levels. RESULTS: Data was analyzed using a one-way ANOVA test. Mean cell proliferation percentage for the ARGD group at 7 days was the highest (167.966%). The difference in means among the three groups at 7 days was statistically significant (p=0.0022). At 14 days, the highest mean of cell proliferation percentage was highest for the ARGD group. When testing all pairs, at 7 days the differences in means were statistically significant between (ARGD vs. no ARGD, and ARGD vs. TCP) (p=0.0018, and p=0.0286), respectively. At 14 days, the differences in means were statistically significant between (ARGD vs. TCP, p= 0.0003) and (no ARGD vs. TCP, p=0.0007). There was a significant difference in means for alkaline phosphatase and osteocalcin at 7 and 14 days between TCP and ARGD, and TCP and no ARGD groups (p < 0.05). CONCLUSIONS: The results of this study on normal human osteoblasts indicated that ARGD significantly enhanced cell proliferation. There was no significant difference in osteogenic behavior between with and without ARGD treatment on titanium surfaces within the time studied. A prolonged phase of cell proliferation was observed in ARGD treated groups.

碩士
國立中山大學
電機工程學系研究所
96
This thesis investigates the impact of preheating and glow current on the life-time of rapid-start fluorescent lamps during the starting transient period. A set of electronic ballast circuit is designed to adjust the starting transient preheating current, open-circuit voltage, and preheating time, so that the preheating conditions and the intended amount of glow current can be scheduled. In the experiments, the tested lamps are frequently switched on and off for 35 seconds and 25 seconds, respectively, to accelerate the life-cycle test. Experimental results show that the effect of the glow current on the life-cycle is trivial. Insignificant difference is found between the test lamps with different glow currents when the preheating conditions are the same. On the other hand, the preheating degree is found to be the main factor that affects the lamp life-time. The tested lamps which are adequately preheated last for more than 100000 test cycles. On the other hand, the tested lamps with insufficient preheating are premature with black ends or even damaged only after the several thousands cycles.

Thesis (M.S.)--State University of New York at Buffalo, 2006.
Title from PDF title page (viewed on Oct. 06, 2006) Available through UMI ProQuest Digital Dissertations. Thesis adviser: Baier, Robert E. Includes bibliographical references.

Thesis (M.S.)--University of Tennessee, Knoxville, 2003.
Title from title page screen (viewed Mar. 18, 2004). Thesis advisor: J. Reece Roth. Document formatted into pages (vi, 47 p. : ill. (some col.)). Vita. Includes bibliographical references (p. 42-46).

The discrepancy between consumers’ pro-environmental attitudes and green purchase behaviour illustrates the necessity to improve the marketing communication of green products’ value proposition. However, academic knowledge on the advertising effectiveness of different green ad appeals and the role of green involvement, particularly regarding mixed functional and emotional green ad appeals, remains scarce. Therefore, this research aims to understand which ad appeal, functional, emotional or their combination most strongly increases advertising effectiveness and behavioural intent as well as the role of consumers’ green involvement for consumers’ response. Additionally, it investigates how ad effectiveness variables predict behavioural intent. For this, a 2x3 factorial experiment based on a convenience sample, with 327 participants, examined the effectiveness of argument strength, individually and with social and moral emotional appeals, and the moderating role of green involvement. Findings revealed that argument strength increases advertising effectiveness primarily for medium involved consumers, whereas a social emotional appeal increases behavioural intent regardless of consumers’ green involvement, providing evidence for the latter as the superior ad appeal. However, there was no significant combined effect of a functional and emotional ad appeal. Consumers’ behavioural intent was found to be much more driven by the anticipated warm glow from the purchase than by green utilitarian benefits. Implications for scholars and managers are discussed.
A discrepância entre as atitudes pró-ambientais dos consumidores e o comportamento de compra de produtos sustentáveis ilustra a necessidade de melhorar a comunicação comercial da proposta destes. Contudo, os conhecimentos académicos sobre a eficácia publicitária dos diferentes apelos publicitários sustentáveis e o papel do envolvimento sustentável, particularmente no que diz respeito aos estímulos publicitários mistos (funcionais e emocionais), continuam a ser escassos. Por conseguinte, esta investigação visa compreender qual o apelo, funcional, emocional ou a sua combinação, que aumenta mais fortemente a eficácia publicitária e a intenção comportamental, bem como o papel do envolvimento sustentável dos consumidores na resposta aos mesmos. Investiga ainda a forma como as variáveis de eficácia publicitária preveem a intenção comportamental.Uma experiência factorial 2x3 baseada numa amostra de conveniência, com 327 participantes, examinou a eficácia da força do argumento, individualmente e com apelos emocionais sociais e morais, e o papel moderador do envolvimento sustentável. Os resultados revelaram que a força do argumento aumenta a eficácia da publicidade principalmente para os consumidores envolvidos a médio prazo, enquanto que um apelo emocional social aumenta a intenção comportamental independentemente do envolvimento sustentável dos consumidores, fornecendo evidência de que este último é o apelo publicitário superior. Contudo, não houve um efeito combinado significativo de um apelo publicitário funcional e emocional. Verificou-se que a intenção comportamental dos consumidores foi muito mais impulsionada pelo “warm glow” antecipado da compra do que pelos benefícios utilitários sustentáveis. As implicações para académicos e gestores são discutidas.