Coal-Bed Methane Provides Less-Invasive Production Method

If the twenty-first century has done anything, it's allowed the extrapolation of “personalization” on a global scale. Once limited to purchasing items during set business hours from a local store's inventory, consumers now acquire everything from tailored clothing to kits of gourmet food every minute of the day—sometimes delivered to their doorsteps within hours. This revolution has redefined what it means to “provide” and “consume.”     

High-Performance Liquid Chromatography Method for the Monitoring of the <Emphasis Type="Italic">Allium</Emphasis> Derivative Propyl Propane Thiosulfonate Used as Natural Additive in Animal Feed

A new simple analytical method for monitoring propyl propane thiosulfonate (PTSO) in animal feed is presented. PTSO is an active ingredient from Allium spp. (like onion and shallot), proposed as a natural additive for feed being an efficient alternative to antibiotics used as growth promoter due to its efficiency improving animal health. Reversed-phase liquid chromatography with UV detection has been used and a previous sample treatment based on solid-liquid extraction has been developed and optimized in order to extract PTSO from a feed for laying hens using acetone as extraction solvent. The method has been characterized obtaining limits of detection and quantification of 11.2 and 37.3 mg kg^?1, respectively, which are lower than the concentrations expected in samples containing this additive. The intra- and interday relative standard deviations (RSDs) were lower than 8.3 % in all the cases, and recoveries varied from 90.2 to 94.6 %. Finally, in order to check the unequivocal identification of PTSO, mass spectrometry detection was applied. The proposed method is a simple procedure for monitoring PTSO in commercial feed, being possible to implement it in routine laboratories for quantification purposes and stability studies of the distributed products.     

Defecting From the Gutenberg Legacy: Employing Images to Test Knowledge Gaps

Education‐based knowledge gaps are well‐documented across countries, media platforms, and content. Without exception, knowledge is measured through words not images. Given the centrality of sight in the natural history of Homo sapiens, the extraordinary visual acuity of humans, and the proliferation of screen‐based visual media environments in contemporary life, an experiment was conducted to test the knowledge gap visually. Participants watched 8 audiovisual news stories. Simple recognition of story details and comprehension of that information were tested in verbal and visual modalities. Results offered the first confirmation of the knowledge gap in visual terms. Yet, gaps were significantly smaller employing visual than verbal measures, pointing to the need for continued efforts to develop visual measures for future memory studies.     

身份之场所

城市是人类创造的适于居住的区域性的人工生态系统,其主干结构是公共空间系统。公共空间,亦即如是所说的公共城市空间,为所有公民所有,因此,它必须毫无例外地面向每个人,其所有权、领域及使用必须是公共的。这种公共空间是文化与社会的支撑,赋予公民团体以身份。它是同存共生的景致,是集会社交的场所,调控个中的私密功能以维系此般公共空间的权益尤显必要。因为代表了公民团体的身份,公共空间成为一种象征性的场所,其身份的表现为人所知并被传承。