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1.
J Health Commun ; 26(5): 350-359, 2021 05 04.
Artigo em Inglês | MEDLINE | ID: mdl-34240681

RESUMO

Guided by the theoretical frameworks of the "health halo effect" and consumer expertise, this research was undertaken to determine how two individual factors, health consciousness and health literacy, differentially influence evaluations of nutrient-content claimed messaging for an unhealthy food (i.e., chocolate) and whether such evaluations are moderated by the reading of the food's Nutrition Facts Label displaying different serving sizes. The research found that health consciousness positively influenced evaluative responses to unhealthy food messaging, and that the positive influence persisted following the reading of a Nutrition Facts label listing a large quantity of unhealthy ingredients per serving size. In contrast, health literacy negatively influenced perceived healthiness and purchase intention when the nutrition label communicated a higher serving size, indicating that subjective and objective expertise work differently. The results advance understanding of the information processing of nutrient-claimed unhealthy foods, and suggest implications for food marketing communication and public health policy.


Assuntos
Estado de Consciência , Letramento em Saúde , Alimentos , Rotulagem de Alimentos , Humanos , Nutrientes
2.
J Nanosci Nanotechnol ; 19(3): 1592-1596, 2019 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-30469228

RESUMO

The brazing characteristics and bonding strengths of pure titanium joints are evaluated for joints brazed with Zr-17Ti-22Ni filler. Vacuum brazing was conducted at temperatures between the melting temperatures of the filler metals and the beta-transition temperature of pure titanium at 3 MPa of pressure for 5 min. Fracturing of the pure titanium joint brazed at 1,093 K occurred before yielding during the tensile tests owing to the presence of a serious segregation region containing harder and more brittle [Ti, Zr]2Ni intermetallic compounds. In contrast, in pure titanium joints brazed at and above 1,113 K, fracturing occurred at the base metal. The yield strengths of the samples brazed at 1,113 K-1,133 K were estimated to be in the range of 320-350 MPa and the ultimate tensile strengths likewise ranged from 350 to 380 MPa. The strength of pure titanium brazed at 1,153 K decreased rapidly. The results of this study show that the optimum temperature to ensure good performance after the brazing of pure titanium with Zr-17Ti-22Ni as a filler metal ranges from 1,113 K to 1,133 K.


Assuntos
Titânio , Temperatura , Resistência à Tração
3.
J Nanosci Nanotechnol ; 19(3): 1772-1776, 2019 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-30469264

RESUMO

Optimum processing conditions were obtained by evaluating the hot working behavior of commercially pure Ti using hot torsion tests. Hot torsion tests were conducted at temperatures ranging from 800 °C-1000 °C and strain rates ranging from 0.1-10 s-1. The flow curves show that the peak stress increases as the temperature decreases and the strain rate increases. The optimum processing conditions were derived by comparing the processing and activation energy maps. The microstructure was characterized based on various regions of the processing map. The activation energy for plastic deformation was obtained using the constitutive equation. The activation energy differs depending on the constituent phases.

4.
J Nanosci Nanotechnol ; 18(3): 2144-2147, 2018 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-29448732

RESUMO

The hot deformation behavior of hot-extruded AA7175 was investigated with flow curves and processing maps through hot torsion tests. The flow curves and the deformed microstructures revealed that dynamic recrystallization (DRX) occurred in the hot-extruded AA7175 during hot working. The failure strain was highest at medium temperature. This was mainly influenced by the dynamic precipitation of fine rod-shaped MgZn2. The processing map determined the optimal deformation condition for the alloy during hot working.

5.
J Health Commun ; 23(4): 387-398, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29617196

RESUMO

Fast food restaurants have increasingly turned to healthier choices to counter criticisms of nutritionally poor menu offerings and to differentiate themselves from the competition. However, research has yet to specifically investigate how consumers respond to advertisements for these healthier foods. To address this knowledge gap, two experiments were conducted to examine how perceived brand healthiness, brand commitment, and health consciousness influence responses to nutrient-content claimed print advertisements for healthy foods. Findings indicate that consumer responsiveness varies across the three factors but is more positive for advertisements placed by perceivably healthy restaurant brands, and that brand commitment and health consciousness play significant roles in affecting how consumer respond to such advertising. Several theoretical and managerial implications of the findings are discussed.


Assuntos
Publicidade/métodos , Comportamento de Escolha , Dieta Saudável/psicologia , Fast Foods , Restaurantes , Adulto , Feminino , Humanos , Masculino , Adulto Jovem
6.
J Health Commun ; 20(11): 1355-65, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26147697

RESUMO

A 2 × 3 × 2 mixed factorial experimental design was used to examine how three message appeals (benefit-seeking vs. risk-avoidance vs. taste appeals), food healthiness (healthy vs. unhealthy foods), and consumer poverty status (poverty vs. nonpoverty groups) impact evaluative responses to nutrient-content claimed food advertisements. Subjects were partitioned into two groups, those below and those above the poverty line, and exposed to nutrient-content claimed advertisement treatments for healthy and unhealthy foods featuring the three appeals. The findings reaffirmed the interaction effects between perceivably healthy and unhealthy foods and different appeals reported in previous studies, and found interaction effects between consumer poverty level and response to the message appeals featured in the experimental food advertisements. Age, body mass index, current dieting status, education, and gender were examined as covariates.


Assuntos
Publicidade/métodos , Comportamento de Escolha , Dieta/psicologia , Alimentos , Valor Nutritivo , Pobreza/estatística & dados numéricos , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem
7.
Appetite ; 81: 218-24, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24975643

RESUMO

Considerable knowledge on food advertising has been generated by research on consumers' psychological reactions to food advertising messaging using either students or nonstudents as subjects. Building on past research, this article investigates the methodological question of whether students are appropriate surrogates for nonstudents in food advertising studies. Following exposure to print advertisements featuring healthy and unhealthy foods with two different nutrient attribute-based message appeals, student and nonstudent subjects were asked to complete five standard evaluative response measures to the food ads: claim believability, attitude-toward-the ad, attitude-toward-the-product, attitude-toward-the-brand, and purchase intention. Among the findings, students were found to react differently and more negatively to identical food advertisements than nonstudents. Overall, the message sent to health communication researchers, policy officials, and practicing professionals is - unless certain criteria are satisfied - students should be considered inadequate subjects to represent all age groups of the general population in food advertising research. Thus, conclusions drawn from student-based research about advertising processing and effects should be questioned and broad generalizations avoided.


Assuntos
Publicidade/métodos , Comportamento do Consumidor , Indústria Alimentícia , Estudantes/psicologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Alimentos Orgânicos , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos Nutricionais , Distribuição Aleatória , Televisão , Adulto Jovem
8.
J Health Commun ; 19(9): 1047-63, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24673153

RESUMO

This study applies the concepts of health halos and unhealthy = tasty intuition to examine how the different health and nutrition-related (HNR) appeal types interact with different food product types compared with taste claims. The experiment investigated the impact of benefit-seeking and risk-avoidance HNR appeals compared with that of taste appeals on different food types. The authors found that although respondents evaluated food ads with the two HNR appeals as less risky/more beneficial and healthier than food ads with a taste claim, the respondents showed better ad-related evaluations on the HNR appeals for perceivably healthy food and on taste appeal for perceivably unhealthy food. The findings provide several theoretical and practical implications for health food marketing and public health policy.


Assuntos
Publicidade , Comportamento de Escolha , Dieta/psicologia , Análise de Alimentos , Alimentos Orgânicos , Alimentos , Valor Nutritivo , Feminino , Alimentos/classificação , Humanos , Masculino , Medição de Risco , Paladar
9.
Carbohydr Polym ; 345: 122559, 2024 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-39227098

RESUMO

Sulfate radical (SO4•-)-based advanced oxidation processes (SR-AOPs) have been studied to date by utilizing metal-organic frameworks as efficient catalysts to generate sulfate radicals by peroxymonosulfate (PMS) activation in water purification. It is important to select high-performance and reliable catalysts for efficient water remediation, and separation and recovery of catalysts are essential in the practical application of MOFs. Herein, we adapted thermally curable, shape-controllable, and cost-effective agarose (AG) as a smart matrix and ZIF-67, as a powerful catalyst to prepare nanoarchitectured aerogel (Z67@AG). This nanoporous aerogel composite can efficiently generate sulfate radicals and hydroxyl radicals by activating PMS in the nanopores. Z67@AG aerogel could be easily fabricated in various molds to make desired shapes. This approach enables its utilization for different filtering systems and demonstrates cost-effective and stable performance by mass production and reusability. In the SR-AOP, aerogel exhibited excellent catalytic decomposition performances of 95 % and 88 % efficiencies within 8 and 10 min for dye and levofloxacin, respectively. It is believed that the proposed highly catalytic nanoporous aerogel nanocomposite having cost-effectiveness, excellent catalytic activity, facile fabrication of desired shapes, and an excellent porous structure can be extended to the synthesis of various nanocomposites and emerging applications.

10.
Health Mark Q ; 29(1): 1-17, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22416922

RESUMO

This study examines frequencies and types of promotion techniques featured in five decades of cigarette advertising relative to five major smoking eras. Analysis of 1,133 cigarette advertisements collected through multistage sampling of 1954 through 2003 issues of three youth-oriented magazines found that 7.6% of the analyzed ads featured at least one promotion technique. Across smoking eras the proportion of promotion in the ads steadily increased from 1.6% in the "pre-broadcast ban era" to 10.9% in the "the pre-Master Settlement Agreement (MSA) era" and 9% in "post-MSA era." The increased use of sponsorships/events in cigarette ads for youth-oriented brands warrants more attention from tobacco control experts and government regulators.


Assuntos
Publicidade/tendências , Fumar/psicologia , Indústria do Tabaco/organização & administração , Adolescente , Comportamento do Adolescente/psicologia , Publicidade/legislação & jurisprudência , Publicidade/métodos , Criança , Humanos , Estudos Longitudinais , Análise Multinível , Publicações Periódicas como Assunto/legislação & jurisprudência , Publicações Periódicas como Assunto/tendências , Comunicação Persuasiva , Fumar/economia , Fumar/legislação & jurisprudência , Indústria do Tabaco/economia , Indústria do Tabaco/legislação & jurisprudência , Estados Unidos
11.
Eur J Protistol ; 79: 125797, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33979712

RESUMO

During daily monitoring in Yongho Bay off Busan, Korea in 2019, an isolate of the dinoflagellate genus Heterocapsa was established in clonal culture. Light and electron microscopic examination revealed that the isolate was ellipsoid in shape, exhibiting a thecal plate arrangement (Po, cp, X, 5', 3a, 7″, 6c, 5s, 5‴, 2'''') consistent with most other Heterocapsa species. A large, elongated nucleus was positioned on the left side of the cell, a single reticulate chloroplast was located peripherally, and a single, starch-sheathed, spherical pyrenoid was present in the episome or near the cingulum. Morphologically, the isolate most closely resembles H. circularisquama and H. illdefina. Transmission electron microscopic examination of whole mounts revealed that the isolate had two body scale types, one of which was a complex, three-dimensional, fine structure distinct from other Heterocapsa species, whereas the other simpler type was structurally similar to the scales of H. horiguchii. Molecular phylogeny based on rRNA sequences revealed that the isolate was distantly related to morphologically similar species, but formed a sister lineage to H. horiguchii, a species characterized by a similar body scale morphology. Based on morphological, ultrastructural, and molecular data, we proposed it as a new species, Heterocapsa busanensis sp. nov.


Assuntos
Dinoflagellida/classificação , DNA Ribossômico/genética , Dinoflagellida/ultraestrutura , Microscopia Eletrônica de Transmissão , Filogenia , República da Coreia , Água do Mar/parasitologia , Especificidade da Espécie
12.
J Health Commun ; 15(7): 769-87, 2010 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-21104505

RESUMO

Tobacco studies indicate that health-related information in cigarette advertising leads consumers to underestimate the detrimental health effects of smoking and contributes to their smoking-related perceptions, beliefs, and attitudes. This study examined the frequencies and kinds of implicit health information in cigarette advertising across five distinct smoking eras covering the years 1954-2003. Analysis of 1,135 cigarette advertisements collected through multistage probability sampling of three popular consumer magazines found that the level of implicit health information (i.e., "light" cigarette, cigarette pack color, verbal and visual health cues, cigarette portrayals, and human model-cigarette interaction) in post-Master Settlement Agreement [MSA] era ads is similar to the level in ads from early smoking eras. Specifically, "light" cigarettes were frequently promoted, and presence of light colors in cigarette packs seemed dominant after the probroadcast ban era. Impressionistic verbal health cues (e.g., soft, mild, and refreshing) appeared more frequently in post-MSA era ads than in pre-MSA era ads. Most notably, a majority of the cigarette ads portrayed models smoking, lighting, or offering a cigarette to others. The potential impact of implicit health information is discussed in the contexts of social cognition and Social Cognitive Theory. Policy implications regarding our findings are also detailed.


Assuntos
Publicidade/tendências , Informação de Saúde ao Consumidor , Publicações Periódicas como Assunto , Fumar , Conhecimentos, Atitudes e Prática em Saúde , Promoção da Saúde , Humanos , Estudos Longitudinais , Embalagem de Produtos/estatística & dados numéricos , Marketing Social , Indústria do Tabaco/economia , Indústria do Tabaco/legislação & jurisprudência
13.
Sci Rep ; 10(1): 39, 2020 01 08.
Artigo em Inglês | MEDLINE | ID: mdl-31913293

RESUMO

Numerous studies have analysed the clinical efficacies of hypomethylating agents (HMAs) in patients with myelodysplastic syndromes (MDS). However, reports that compare the two HMAs, decitabine and azacitidine, in patients with lower-risk (low and intermediate-1) MDS are limited. We compared 5-day decitabine and 7-day azacitidine regimens in terms of treatment responses, survival outcomes, and adverse events in patients with lower-risk MDS with poor prognostic features. The overall response rates (ORRs) were 67.2% and 44.0% in the patients treated with decitabine and azacitidine, respectively (P = 0.014). While the median progression-free survival (PFS) was significantly better in the patients treated with decitabine than in those treated with azacitidine (P = 0.019), no significant differences in event-free and overall survival rates were observed between the two groups. Multivariate analysis revealed that compared with azacitidine treatment, decitabine treatment is significantly associated with a higher ORR (P = 0.026) and longer PFS (P = 0.037). No significant differences were observed in the incidence of grade 3 or higher haematologic adverse events in response to the two HMAs. In conclusion, in lower-risk MDS, especially with poor prognostic features, ORR and PFS were significantly better with 5-day decitabine treatment than with 7-day azacitidine treatment, with comparable safety.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Síndromes Mielodisplásicas/tratamento farmacológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Azacitidina/administração & dosagem , Decitabina/administração & dosagem , Esquema de Medicação , Feminino , Seguimentos , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Síndromes Mielodisplásicas/patologia , Prognóstico , Estudos Retrospectivos , Taxa de Sobrevida , Adulto Jovem
14.
Korean J Intern Med ; 34(6): 1333-1346, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-30360024

RESUMO

BACKGROUND/AIMS: Bortezomib plus melphalan-prednisone (VMP) is a standard treatment for multiple myeloma, particularly for patients who are ineligible for high-dose therapy. However, early discontinuation or treatment modification is often needed owing to adverse events. The aim of this study was to investigate the clinical outcomes of modifying the dose of melphalan-prednisone (MP) in patients receiving VMP. METHODS: We examined 67 patients who received a modified dose of MP, and 38 patients who received the regularly planned dose of MP. We then analyzed clinical differences between the groups. RESULTS: Although there was no difference in the proportion of discontinuation due to adverse events between dose groups, more patients in the planned-dose group experienced earlier discontinuation in general. The overall response rate (ORR) was 81.0% and complete response (CR) rate was 30.5%. After a median 15.7 months of follow-up, the median progression-free survival (PFS) and overall survival (OS) were 25.0 and 47.8 months, respectively. There was no significant difference in the ORR, CR, PFS, and OS of the two dose groups. A median of four cycles were delivered, and the median cumulative bortezomib dose was 41.6 mg/m2 . The median PFS in patients with doses ≥ 41.6 mg/m2 was longer than that in patients with doses < 41.6 mg/m2 (35.1 months vs. 9.6 months). However, when MP was < 50% of the planned dose, PFS and OS were poor. CONCLUSION: Modifying the dose of MP might be a feasible and effective therapeutic approach for multiple myeloma patients receiving VMP treatment.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Bortezomib/administração & dosagem , Melfalan/administração & dosagem , Mieloma Múltiplo/tratamento farmacológico , Prednisona/administração & dosagem , Idoso , Idoso de 80 Anos ou mais , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Bortezomib/efeitos adversos , Progressão da Doença , Feminino , Humanos , Masculino , Melfalan/efeitos adversos , Pessoa de Meia-Idade , Mieloma Múltiplo/diagnóstico , Mieloma Múltiplo/mortalidade , Prednisona/efeitos adversos , Intervalo Livre de Progressão , República da Coreia , Estudos Retrospectivos , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento
15.
J Pharm Biomed Anal ; 43(3): 1141-5, 2007 Feb 19.
Artigo em Inglês | MEDLINE | ID: mdl-17029668

RESUMO

The stability of drug is a critical factor in quality control, drug efficacy, safety, storage, and production conditions. The rearrangement of paclitaxel, which involves opening of the oxetane ring and migration of acetyl group occurred on heating a powder of purified paclitaxel. Subsequently, the unusual migration of benzoyl groups progressed rapidly in organic solvents. These rearrangement derivatives were isolated carefully. The structures of the intermediate derivative A and the product derivative B were confirmed using (1)H NMR, high performance liquid chromatography (HPLC), and mass spectrometry. We proposed the rearrangement pathway here for the first time. Neither derivative exhibited bioactivity in SKOV3 (ovarian cancer) or MDA-MB-435 (breast cancer) cell culture assays.


Assuntos
Antineoplásicos Fitogênicos/química , Paclitaxel/análogos & derivados , Paclitaxel/química , Antineoplásicos Fitogênicos/farmacologia , Linhagem Celular Tumoral , Cromatografia Líquida de Alta Pressão , Feminino , Humanos , Indicadores e Reagentes , Células KB , Espectroscopia de Ressonância Magnética , Paclitaxel/farmacologia , Sais de Tetrazólio , Tiazóis
16.
J Chromatogr A ; 1123(1): 15-21, 2006 Aug 04.
Artigo em Inglês | MEDLINE | ID: mdl-16716338

RESUMO

The taxane derivatives 13-dehydroxybaccatin III (13-DHB III) and 10-deacetylpaclitaxel (10-DAP) can be used as semi-synthetic precursors of paclitaxel. These precursors were isolated in a simple and economical procedure during purification of paclitaxel from plant cell culture extracts. No additional costs for cell culture or extraction by silica-gel low-pressure chromatography were incurred. Precipitation from dichloromethane/n-hexane followed by HPLC on ODS and silica-gel resins resulted in paclitaxel of 99.5% purity with 80% overall yield. ODS low-pressure chromatography and THF/n-hexane precipitation yielded 13-dehydroxybaccatin III at >99% purity with 87.1% overall yield, and ODS low-pressure chromatography alone yielded 10-deacetylpaclitaxel at >90% purity with 93.4% overall yield. These compounds are of sufficient purity for use in semi-synthesis of paclitaxel. Both compounds were obtained in high yield at >99.5% purity using ODS-HPLC. The procedures described allow the simultaneous purification of 13-dehydroxybaccatin III, 10-deacetylpaclitaxel, and paclitaxel with only minimal additional expense for reagents or equipment.


Assuntos
Taxoides/isolamento & purificação , Taxus/química , Células Cultivadas , Precipitação Química , Cromatografia Líquida de Alta Pressão/métodos
17.
J Nanosci Nanotechnol ; 14(10): 7981-4, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25942906

RESUMO

A (Ti-35mass%Nb)-4mass%Sn alloy was cross-roll rolled with a reduction ratio of 70% in which the roll axes are tilted by ± 5 degrees away from the transverse direction of the rolled sample and then aged at 250 degrees C for 2 h. Cross-roll rolling was found to increase yield strength and Young's modulus, simultaneously. Yield strength was higher in cross-roll rolled than in conventionally rolled at same reduction ratio. Yield and tensile strength further increased by a low temperature ageing by ψ precipitation hardening and microstructure refinement. Yield and tensile strength of the aged 70% cross-roll rolled sample were higher than those of the aged 70% conventionally rolled one.

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