Related Experiment Video
Updated: May 12, 2026
07:51
An Innovative Running Wheel-based Mechanism for Improved Rat Training Performance
Published on: September 19, 2016
If the wheel ain't broke, don't reinvent it
Lipids in Health and Disease
|April 13, 2013
Summary
This commentary evaluates a new hypothesis for atherosclerosis, a condition strongly linked to dyslipidemia. The study critically assesses the validity of this novel theory against established evidence.
Area of Science:
- Cardiovascular Science
- Biomedical Research
- Public Health
Background:
- Human atherosclerosis research has evolved over 100 years.
- Dyslipidemia is the established paradigm for atherosclerosis etiology.
- Biomedical research and public health policies are based on this paradigm.
Purpose of the Study:
- To critically evaluate the validity of a novel hypothesis for atherosclerosis.
- To assess the new theory against existing experimental and observational evidence.
Main Methods:
- Critical evaluation of a novel hypothesis.
- Review of experimental and observational evidence supporting existing theories.
Main Results:
- The established paradigm strongly supports a causal role for dyslipidemia.
- A novel hypothesis for atherosclerosis etiology has recently been proposed.
Conclusions:
- The commentary critically examines the validity of the new hypothesis.
- The established role of dyslipidemia in atherosclerosis remains a key focus.
Related Concept Videos
01:09Rolling Without Slipping
People have observed the rolling motion without slipping ever since the invention of the wheel. For example, one can look at the interaction between a car's tires and the surface of the road. If the driver presses the accelerator to the floor so that the tires spin without the car moving forward, there must be kinetic friction between the wheels and the road's surface. If the driver slowly presses the accelerator, causing the car to move forward, the tires roll without slipping. It is essential...
01:17Rolling Resistance: Problem Solving
Rolling resistance, also known as rolling friction, is the force that resists the motion of a rolling object, such as a wheel, tire, or ball, when it moves over a surface. It is caused by the deformation of the object and the surface in contact with each other, as well as other factors like internal friction, hysteresis, and energy losses within the materials. Rolling resistance opposes the object's motion, requiring additional energy to overcome it and maintain movement. In practical...
01:17Newton's First Law: Introduction
Motion draws our attention. Motion itself can be beautiful, causing us to marvel at the forces needed to create spectacular sights, such as that of a dolphin jumping out of the water, the flight of a bird, or the orbit of a satellite. The study of motion is kinematics, but kinematics only describes the way objects move—their velocity and acceleration. Dynamics considers the forces that affect the motion of moving objects and systems. Newton's laws of motion are the foundation of dynamics. These...
01:13Mass Moment of Inertia: Problem Solving
Knowing how to determine the moment of inertia in a wheel's axle can be invaluable in engineering and automotive applications. It provides an understanding of how changes in geometry, mass, and radius can impact its performance.
The axle can be approximated to a solid cylinder with longitudinal and perpendicular axes. Initially, a thin disc is considered parallel to the circular face of the cylinder.
The axle can be approximated to a solid cylinder with longitudinal and perpendicular axes. Initially, a thin disc is considered parallel to the circular face of the cylinder.
01:19Limits with Oscillating Discontinuities
An oscillating discontinuity is a type of discontinuity in which a function’s values fluctuate infinitely often as the input approaches a particular point. Unlike jump discontinuities, where the function suddenly shifts between two values, or infinite discontinuities, where the function diverges without bound, an oscillating discontinuity arises from rapid back-and-forth variation. Because the function never stabilizes toward a single value, no finite limit exists at that point.One of the most...
01:16Design of Transmission Shafts
The design of a transmission shaft is governed by two primary specifications: the power it transmits and its rotational speed. These parameters guide the selection of the shaft's material and cross-sectional dimensions, ensuring that the material's maximum shearing stress remains within the elastic limit while transmitting the desired power at the given speed. The system's power is intrinsically linked to the applied torque. The torque applied to the shaft can be calculated by reconfiguring the...