We investigated an interaction effect between lighting color and food color that stimulates or discourages one＇s appetite. Facilitated by the LED （light-emitting diode） as an additional chromatic lighting source, o...We investigated an interaction effect between lighting color and food color that stimulates or discourages one＇s appetite. Facilitated by the LED （light-emitting diode） as an additional chromatic lighting source, observers selected the best and worst lighting colors by themselves using a ＂Mini Living Colors （PhilipsTM）＂ in the preliminary test （N = 30） and then color picker software in the main experiment （N = 30）. Food stimuli were composed of two aspects, type--natural or processed--and complexity--low or high, and consequently they were grouped into four categories. We measured the selected lighting color in terms of chromaticity and illumination level, and analyzed the best and worst combinations based on these measurements. Throughout the two empirical studies, we found three tendencies： First, except for the white, yellow lighting stimulates while red and blue discourages one＇s appetite. Second, when color categories of lighting and food are similar to each other, it stimulates the appetite whereas complementary, it discourages it. Third, the type of food does not act as an influencing factor.展开更多
Chitosan(CS), a kind of naturally produced polysaccharide with extraordinary biocompatibility and biodegradation, shows much potential to act as reducing and stabilizing agent in the synthesis of gold nanoparticles(Au...Chitosan(CS), a kind of naturally produced polysaccharide with extraordinary biocompatibility and biodegradation, shows much potential to act as reducing and stabilizing agent in the synthesis of gold nanoparticles(AuNPs) for drug delivery. To solve the poor solubility and expand the pharmaceutical applications of CS, various CS derivatives through rational design have been developed and further used to prepare, stabilize, and mediate self-assembling of gold materials. Herein, we chose sulfonic chitosan as a stabilizing reagent for the synthesis of highly stable AuNPs(AuNP/SCSs) with diameters of about 3 nm. For investigating their surface electronic payload of charged drugs, the negatively charged fluorescence isothiocyanate(FITC) and positively charged Rhodamine B(Rb) were used as models to be modified on the surface of the AuNP/SCSs via a layer-by-layer(Lb L) method. With a basis of the fluorescence resonance energy transfer(FRET) principle, via adjusting the distance between AuNPs and fluorescent molecules by tuning the layers of charged polymers, the regulation of the fluorescence intensity of the fluorescent molecules has been achieved. In addition, the drug loading efficiency was investigated.展开更多
文摘We investigated an interaction effect between lighting color and food color that stimulates or discourages one＇s appetite. Facilitated by the LED （light-emitting diode） as an additional chromatic lighting source, observers selected the best and worst lighting colors by themselves using a ＂Mini Living Colors （PhilipsTM）＂ in the preliminary test （N = 30） and then color picker software in the main experiment （N = 30）. Food stimuli were composed of two aspects, type--natural or processed--and complexity--low or high, and consequently they were grouped into four categories. We measured the selected lighting color in terms of chromaticity and illumination level, and analyzed the best and worst combinations based on these measurements. Throughout the two empirical studies, we found three tendencies： First, except for the white, yellow lighting stimulates while red and blue discourages one＇s appetite. Second, when color categories of lighting and food are similar to each other, it stimulates the appetite whereas complementary, it discourages it. Third, the type of food does not act as an influencing factor.
基金supported by the National Natural Science Foundation of China (30900337, 31470916, 81673390)Jiangsu Provincial Natural Science Foundation (BK20150689)+2 种基金the Fundamental Research Funds for the Central Universities (2015PT036)the Priority Academic Program Development of Jiangsu Higher Education Institutionsthe Open Project Program of MOE Key Laboratory of Drug Quality Control and Pharmacovigilance (DQCP2015MS01)
文摘Chitosan(CS), a kind of naturally produced polysaccharide with extraordinary biocompatibility and biodegradation, shows much potential to act as reducing and stabilizing agent in the synthesis of gold nanoparticles(AuNPs) for drug delivery. To solve the poor solubility and expand the pharmaceutical applications of CS, various CS derivatives through rational design have been developed and further used to prepare, stabilize, and mediate self-assembling of gold materials. Herein, we chose sulfonic chitosan as a stabilizing reagent for the synthesis of highly stable AuNPs(AuNP/SCSs) with diameters of about 3 nm. For investigating their surface electronic payload of charged drugs, the negatively charged fluorescence isothiocyanate(FITC) and positively charged Rhodamine B(Rb) were used as models to be modified on the surface of the AuNP/SCSs via a layer-by-layer(Lb L) method. With a basis of the fluorescence resonance energy transfer(FRET) principle, via adjusting the distance between AuNPs and fluorescent molecules by tuning the layers of charged polymers, the regulation of the fluorescence intensity of the fluorescent molecules has been achieved. In addition, the drug loading efficiency was investigated.
