Purpose: To compare the effects of a single bout of eccentric cycling (ECC) and eccentric cycling with blood flow restriction (ECC[subscript BFR]) on the changes in cardio-metabolic demand and indirect markers of muscle damage in healthy men. Method: Twenty-one young men (24.0 ± 3.2 y) were randomly allocated in two groups to perform a 30-min…

Time-resolved luminescence lifetime measurements are an important photophysical technique. However, access to this technique at the undergraduate level is limited by the expense of the instrumentation needed to create the well-defined light pulses required to measure the luminescence decay of an excited state molecule. We present here an…

Issue #50 of the Bank Street Occasional Paper Series, "Learning With Treescapes in Environmentally Endangered Times Learning with Treescapes in Environmentally Endangered Times," is intended to be hopeful. Articles in this issue contribute to the envisioning of new practices and to an architecture of knowledge to waymark a more…

During the last century, historians have discovered that between the 13th and 18th centuries, at least six sages discovered that the air we breathe contains something that we need and use. Ibn al-Nafis (1213-1288) in Cairo and Michael Servetus (1511-1553) in France accurately described the pulmonary circulation and its effect on blood color.…

Biochemistry primarily focuses on the non-metal chemical elements carbon, oxygen, nitrogen, hydrogen, sulfur, and phosphorus in the four groups of building blocks (sugars, lipids, amino acids, and nucleotides) and the corresponding macromolecules. However, at least 10 essential chemical elements of life are metals. This article discusses the…

Across diverse cultural contexts, children and adults believe in the existence of religious and supernatural unobservables (e.g., gods, angels) as well as scientific and natural unobservables (e.g., germs, oxygen). In this article, we explore the role of cultural input and testimony in children's developing beliefs in supernatural and natural…

Purpose: The purpose of this paper was to assess the knowledge on sport and exercise science held by a sample of Brazilian physiotherapists, nutritionists and physical educators. Design/methodology/approach: A cross-sectional research design was used. The answers given by 1,147 professionals (300 physiotherapists, 705 physical educators and 142…

In this laboratory experiment, students performed thermogravimetric analysis (TGA) coupled with mass spectrometry (MS) of herbaceous materials (TGA-MS) and learned to analyze mass-loss curves, as well as identify common fragmentation ions. The experiment is the first one to present the application of TGA in a currently relevant topic: biomass…

Background: Individuals with intellectual disability (ID) have very low physical activity and low peak oxygen uptake (VO[subscript 2peak]), potentially explained by physiologically lower peak heart rates (HR[subscript peak]). Method: The present authors performed a retrospective analysis of a large data set of individuals with intellectual…

The formation of chemical patterns is in general difficult to control due to the random diffusive motions of the reacting chemical species in solution. In this paper, we present a new method using audible sound to control the formation of chemical patterns obtained in blue bottle experiments. The waves generated on the surface of the solution by…

In Japan, research activities by junior and senior high school students show an upward trend. However, there are limited examples of research activities in the field of elementary particles and atoms. This is due to the difficulty associated with procuring research tools such as accelerators or particle detectors. Therefore, we hosted the 'Accel…

The purpose of this study was to examine the effects of a 6-week skill-based volleyball training program on the running economy (RE) of male competitive volleyball players. Ten male amateur volleyball players (age 21.1 ± 1.5 years) participated in a 6-week skill-based volleyball training program three times a week in the pre-season preparatory…

Purpose: This study investigated the existence of the oxygen uptake (VO[subscript 2]) overshoot and the effects of exercise intensity and fitness status on the response during moderate-intensity exercise. Methods: Twelve "high-fitness" (M[subscript age] = 26 ± 5 years; M[subscript height] = 184.1 ± 5.4 cm; M[subscript body mass] =…

This paper describes a student laboratory in the Unit Operations Laboratory at the Colorado School of Mines: air separation by pressure swing adsorption. The flexibility of the system enables students to study the production of enriched nitrogen or oxygen streams. Automatic data acquisition permits the study of cycle steps and performance.…

The assessment of water resources plays an important environmental and economic role, since it allows developing an effective program of regional development with regard to the environmental load. The hydro-chemical regime of lakes includes water temperature, content of biogenic elements, total mineralization, oxygen regime, and other parameters…