The Chinese spirit baijiu is currently the world’s bestselling spirit, with more than ten billion liters sold in 2018. This is a figure that puts its sales higher than whiskey, vodka, gin, and tequila combined. The multitude of baijiu varieties available in the market differ in several ways ranging from aging to the traditional artisanship involved in producing the final spirit to several other features, including the rarity of the bottle. A result of these differences is a wide distribution of prices for the various baijiu products. Consequently, a single bottle of baijiu can cost anywhere from a few dollars, up to thousands of US dollars. The price differences among the various baijiu spirits necessitate the existence of reliable scientific methods that can efficiently differentiate and authenticate the qualities of baijiu spirits. In addition, the existence of such methods facilitates the prevention of counterfeit sales of the final product. Considering this, we introduce an analytical chemistry method that distinguishes amongst different baijiu spirits based on fluorescence spectroscopy. Its attributes include the low cost and convenience that allows analysis either before or while the spirit is in the market. Our work herein focuses on the analysis of thirty different varieties of baijiu spirits from six different distilleries from East Asia and North America by fluorescence emission spectroscopy, which is associated to the price of the product. For the analysis, we employed a HORIBA FLUOROLOG 3 (HORIBA—Jobin Yvon) spectrometer. Major advantages of this method include the low cost, as no consumables except a quartz reusable cuvette are required, the minimal waste, and finally the quick processing of data.

A series of studies was performed to explore the hypothesis that employees in windowless offices compensate for the lack of windows. In Experiment 1, students rated the degree to which they perceived various office features to be substitutes for windows. Analyses revealed four general categories of potential window substitutes: other apertures (e.g., skylights), paintings/art, living things (e.g., plants), and panels (e.g., light panels). Experiment 2 supported the external validity of the data in Experiment 1 in that full-time office workers produced virtually identical ratings of window substitutability. Experiment 3 was a field study of 173 offices. Measurements were made of the number and size of windows, number and size of all potential window substitutes, and size of wall space available for pictures. Size was measured in degrees of visual angle from the office workers' chairs. No evidence was obtained to indicate that any of the features measured were more prevalent or larger in offices without windows. Furthermore, power analyses indicated that the study had sufficient power to find such effects. Experiment 4 was designed to investigate other potential reasons for the use of the items that were examined in Experiment 3. Several reasons, such as space personalization, were found to be perceived by office occupants as more important than the desire to compensate for lack of windows.