Sensitivity shift of the meta-metabolome and photosynthesis to the chemical stress in periphyton between months along one year and a half period: Case study of a terbuthylazine exposure.

Despite the knowledge of the effects of contaminants on periphyton, information is limited about their natural fluctuations in sensitivity to chemical stress between various months. In particular, the molecular and biochemical mechanisms associated with sensitivity of photosynthesis and its fluctuations remain poorly described. To tackle this lack of knowledge, meta-metabolomics offers a comprehensive picture of the sensitive molecular response preceding the physiological impact.

Experimental testing of two urban stressors on freshwater biofilms.

Aquatic ecosystems and their communities are exposed to numerous stressors of various natures (chemical and physical), whose impacts are often poorly documented. In urban areas, the use of biocides such as dodecyldimethylbenzylammonium chloride (DDBAC) and their subsequent release in wastewater result in their transfer to urban aquatic ecosystems. DDBAC is known to be toxic to most aquatic organisms.

From Theory to Practice: The Enacted Curriculum of a Successful Master's Program in Quality Improvement and Leadership.

Introduction: Blended learning has taken on new prominence in the fields of higher and continuing education, especially as programs have shifted in response to teaching in a global pandemic. The faculty at the Jönköping Academy's Masters in Quality Improvement and Leadership program has been offering a blended learning curriculum, based on four core design principles, since 2009. We studied key features of the enacted curriculum to understand conditions that can support an effective blended learning model.

Providing comparison normal examples alongside pathologic thoracic radiographic cases can improve veterinary students' ability to identify abnormal findings or diagnose disease.

Learning by comparison is a frequently employed education strategy used across many disciplines and levels. Interpreting radiographs requires both skills of perception and pattern recognition, which makes comparison techniques particularly useful in this field. In this randomized, prospective, parallel-group study, students enrolled in second and third-year radiology veterinary courses were given a case-based thoracic radiographic interpretation assignment.

Tensor electromagnetism and emergent elasticity in jammed solids.

The theory of mechanical response and stress transmission in disordered, jammed solids poses several open questions of how nonperiodic networks-apparently indistinguishable from a snapshot of a fluid-sustain shear. We present a stress-only theory of emergent elasticity for a nonthermal amorphous assembly of grains in a jammed solid, where each grain is subjected to mechanical constraints of force and torque balance. These grain-level constraints lead to the Gauss's law of an emergent U(1) tensor electromagnetism, which then accounts for the mechanical response of such solids.

Five ways for facilitators to get a grip on small group learning.

Successful groups do not happen by chance, and they do not depend solely or even mainly on the interpersonal skills of the group members. Cooperative learning (CL) theory tells us that small groups are successful when facilitators structure and organize the small group to include each one of the five elements of cooperative learning. In this article, we have described each of these five elements as a way to get a grip on small group learning: positive interdependence, promotive interaction, group and individual accountability, interpersonal and small group skills, and group processing.

The effect of case nodes in problem-based learning on the length and quality of discussion: a 2x2 factorial study.

Background: Problem-based learning (PBL) relies heavily on case structure for their success. To make more meaningful cases, faculty introduced a "case node" that requires students to make a group decision on the action they will take at a given point in the case. The purpose of this study was to determine whether case nodes enhance PBL discussions.