[Evolution of the concept of stress in physiology]

Here, we characterize cellular proteotoxic stress responses in the nematode C. elegans by measuring the activation of fluorescent transcriptional reporters and assaying sensitivity to physiological...

We present methods to evaluate how predation risk can alter the chemical quality of herbivore prey by inducing dietary changes to meet demands of heightened stress, and how the decomposition of carcasses from these stressed herbivores slows subsequent plant litter decomposition by soil...

In the ever-changing marketing landscape, the evolution of marketing concepts has mirrored the shifting tides of consumer preferences, thereby unveiling a myriad of business opportunities.
The Production Concept: Relevant in price-conscious markets, it assumes that customers prioritize product availability and affordability. Focusing on large-scale production, cost-efficiency, and wide availability remains crucial for businesses catering to them.
The Product Concept emphasizes product quality,...

Stress triggers a coordinated physiological response involving the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) axis. This dual activation ensures that the body is prepared for both immediate and prolonged stress management. The process begins with the perception of a stressor. This initial phase activates the SNS, leading to the rapid release of adrenaline (epinephrine) from the adrenal glands.
Role of the Sympathetic Nervous System
Adrenaline triggers the...

Before the 20th century, marketing, as seen today, was virtually nonexistent. Over time, it evolved from a production-centric to a customer-centric philosophy, adapting to changing consumer needs.
Production Concept (Early 20th Century): During industrialization, companies were primarily concerned with production efficiency, resulting in standardized and undifferentiated goods.
Product Concept (1920s - 1950): After the World Wars, due to intense competition, companies focused on improving...

Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.