Total of 28 articles.
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May 19, 2023Open AccessArticle
We report a nematode electrotactic-response valve (NERV) to control the locomotion of Caenorhabditis elegans (C. elegans) in microfluidic devices. This nonmechanical, unidirectional valve is based on creating a confined region of lateral electric field that is switchable and reversible. We observed that C. elegans do not prefer to pass through this region if the field lines are incident to its forward movement. Upon reaching the boundary of the NERV, the incident worms partially penetrate the fi...
Animal Behavior
Zoology
Mathematical Biology
Veterinary Medicine
Cell Biology
Parasitology
Developmental Biology
Evolutionary Studies
Bioengineering
Bioinformatics
Environmental Sciences
Biophysics
May 19, 2023Open AccessArticle
We describe a planar MEMS silicon structure to record ion channel currents in biological cells. The conventional method of performing an electrophysiological experiment, 'patch-clamping', employs a glass micropipette. The micropipette tip is a source of thermal noise because of its inherent, tapered, conical structure, giving rise to a large pipette resistance. This pipette resistance, when coupled with the biological cell capacitance, limits the available bandwidth of single ion channel recordi...
Taxonomy
Microbiology
Biochemistry
Biodiversity
Developmental Biology
Bioengineering
Bioinformatics
Environmental Sciences
Agricultural Science
Computational Biology
Genetics
Cell Biology
Food Science & Technology
Parasitology
Synthetic Biology
May 19, 2023Open AccessArticle
Computer simulations of realistic ion channel structures have always been challenging and a subject of rigorous study. Simulations based on continuum electrostatics have proven to be computationally cheap and reasonably accurate in predicting a channel's behavior. In this paper we discuss the use of a device simulator, SILVACO, to build a solid-state model for KcsA channel and study its steady-state response. SILVACO is a well-established program, typically used by electrical engineers to simula...
Biological Chemistry
Photochemistry
Taxonomy
Medicinal Chemistry
Ecosystem Science
Developmental Biology
Computational Robotics
Complex network models
Artificial Intelligence
Genetics
Theoretical Chemistry
Analytical Chemistry
Neuroscience
Biological Materials
Nanometer Materials
Green Chemistry
Mathematical Biology
Molecular Biology
Microbiology
Biochemistry
Biodiversity
Bioengineering
Bioinformatics
Biophysics
Biotechnology
Functional Materials
Computational Biology
Synthetic Biology
May 19, 2023Open AccessArticle
Infections from parasitic nematodes (or roundworms) contribute to a significant disease burden and productivity losses for humans and livestock. The limited number of anthelmintics (or antinematode drugs) available today to treat these infections are rapidly losing their efficacy as multidrug resistance in parasites becomes a global health challenge. We propose an engineering approach to discover an anthelmintic drug combination that is more potent at killing wild-type Caenorhabditis elegans wor...
Neuroscience
Marine Biology
Toxicology
Taxonomy
Microbiology
Ecosystem Science
Biodiversity
Developmental Biology
Bioengineering
Environmental Sciences
Animal Behavior
Agricultural Science
Biotechnology
Computational Biology
Food Science & Technology
Parasitology
Plant Science
Synthetic Biology
May 19, 2023Open AccessArticle
In this paper, we present a movement-based assay to observe adaptability in Caenorhabditis elegans locomotion behavior. The assay comprises a series of sinusoidal microchannels with a fixed wavelength and modulating (increasing or decreasing) amplitude. The channel width is comparable to the body diameter of the organism. Worms are allowed to enter the channel from the input port and migrate toward the output port. Within channel sections that closely match the worm's natural undulations, the wo...
Animal Behavior
Agricultural Science
Veterinary Medicine
Parasitology
Plant Science
Soil Science
Biodiversity
Bioengineering
May 19, 2023Open AccessArticle
In this paper, we explore the use of microfluidic paper-based analytical devices (?PADs) to study the behavior of Caenorhabditis elegans. We show how these devices can be fabricated on paper and plastic substrates, as well as how to load, visualize, and transfer single and multiple nematodes. We also demonstrate the use of anthelmintic drug, levamisole, to perform chemical testing on C. elegans. Furthermore, we provide a custom program that is able to recognize individual worms on the ?PADs in r...
Animal Behavior
Computational Biology
Microbiology
Cell Biology
Parasitology
Plant Science
Soil Science
Developmental Biology
Bioengineering
Environmental Sciences
Biophysics
May 19, 2023Open AccessArticle
All life forms use a seamless integration of physical and chemical sensing mechanisms to enhance their performance and survival skills. To mimic the integrative sensing abilities found in nature, there is a significant interest in developing wearable devices that can smartly track the physiological and biochemical signals of the human body. Progress in wearable physical sensors has been remarkable giving rise to a number of consumer electronics products meant to measure parameters related to act...
Electric Engineering
Green Chemistry
Electrochemistry
Biological Chemistry
Mathematical Biology
Biochemistry
Bioengineering
Bioinformatics
Fundamentals of Material Science
Biophysics
Environmental Sciences
Functional Materials
Chemical Engineering & Technology
Genomics
Computational Biology
Plant Science
Synthetic Biology
Materials Engineering
Analytical Chemistry
Nov 20, 2017Open AccessArticle
Light is one of the most fascinating something of all the time. This paper aims to develop a tool with which one can determine with great accuracy the dimensions of light. Basically was entered a new relationship through which one may determine the size of a photon depending on the wavelength of light. Instead wavelength of light can be used as variable the speed of light and its frequency. One could determine this new expressions using and the known equations: the total energy of a moving parti...
Electric Engineering
Nanometer Materials
Industrial Engineering
Nuclear Chemistry
Civil Engineering
Dynamical System
Biochemistry
Bioengineering
Military Engineering
Nuclear Engineering
Nuclear Physics
Biotechnology
Chemical Engineering & Technology
Nov 20, 2017Open AccessArticle
The complex biomechanics and morphology of the femur proximal epiphysis are presented. This specific region in human femur is characterized by a high flexibility compared to that of other primates, since evolved lighter and longer due to the human verticalposition and more balanced loading. The nature and fine morphology of the femur head and its structural behavior have been investigated. Isotropic and orthotropic trabecular structures, which are not present in other primates, have been associa...
Biological Materials
Public Health
Biological Chemistry
Anatomy & Physiology
Dentistry
Global Health
Biochemistry
Bioengineering
Biophysics
Biotechnology
Biological Engineering
Computational Biology
Cell Biology
Orthopedics
Synthetic Biology
Internal Medicine
Surgery & Surgical Specialties
Nov 20, 2017Open AccessArticle
The four basic elements of life are: Oxygen, hydrogen, nitrogen and phosphorus. These four elements are found in abundance in both the human body and in animals. There are other elements that compose the human body, but the four we've highlighted participate in all life processes. Besides, these four elements make up ATP chains (molecule), which governs and controls the body entirely energy processes and physiological and pathological processes of the human body. Oxygen is the pivot, which produ...
Biological Materials
Nanometer Materials
Genetic Engineering
Industrial Engineering
Biological Chemistry
High Polymer Chemistry
Inorganic Nonmetallic Materials
Civil Engineering
Geriatrics
Composite Material
Global Health
Structural Material
Biochemistry
Bioengineering
Fundamentals of Material Science
Biophysics
Biological Engineering
Biotechnology
Functional Materials
Chemical Engineering & Technology
Genetics
Cell Biology
Material Experiment
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