• We aim for a holistic molecular description how specific lipids regulate transport of ions, nutrients and compatible solutes across cell membranes and between chemically distinct organelles. (uni-regensburg.de)
  • Three different mechanisms for passive transport in bilayer membranes. (diffen.com)
  • Active and passive transport are biological processes that move oxygen , water and nutrients into cells and remove waste products. (diffen.com)
  • The movement of genetic materials, such as RNA and ribosomes, from the nucleus to the cytoplasm is a critical component in a cell's ability to make the proteins necessary for essential biological functions. (phys.org)
  • Found along the surface of the nuclear envelope, nuclear pores are small openings that allow certain molecules, such as messenger RNA, transfer RNA and ribosomes , to be transported across this physical barrier that separates a cell's nucleus and DNA from its cytoplasm. (phys.org)
  • Examples of active transport include a sodium pump, glucose selection in the intestines, and the uptake of mineral ions by plant roots. (diffen.com)
  • By solving atomic structures of individual transporters and channels in their native membrane environment and in complex with regulatory proteins in combination with functional measurements and spectroscopy we want to determine a molecular movie of lipid-mediated transport regulation. (uni-regensburg.de)
  • In some cells, these RNAs are bound together in large clusters known as transport granules, which are carried to precise locations within a cell to synthetize specific proteins needed at that site. (phys.org)
  • Working to understand how synapses develop and communicate with neighboring muscle cells, Budnik discovered a new method whereby these large granules, in the form of ribonucleoprotein (RNP) particles, were transported across the nuclear envelope. (phys.org)
  • In eukaryotic cells , amino acids, sugars and lipids need to enter the cell by protein pumps, which require active transport.These items either cannot diffuse or diffuse too slowly for survival. (diffen.com)
  • Transport occurs from a low concentration of solute to high concentration of solute. (diffen.com)
  • In addition to the canonical pathway of mRNA export going through the nuclear pore complex , we now know that large RNA transport granules can be assembled in the cell nucleus and exported via a budding mechanism previously thought to only be used by the herpes virus. (phys.org)
  • Cancer employs mass transport as a fundamental mechanism of coordination and communication and the physics of mass transport within body compartments and across biological barriers differentiates cancer from healthy tissues [3]. (nyu.edu)
  • Mass transport is also at the basis of cancer pharmacological treatment Delivery of diagnostic and therapeutic agents differs dramatically between tumor and normal tissues. (nyu.edu)
  • Passive transport occurs in the kidneys and the liver, and in the alveoli of the lungs when they exchange oxygen and carbon dioxide. (diffen.com)
  • 3] Baxter, L.T., Jain, R.K. Transport of fluid and macromolecules in tumors. (nyu.edu)
  • Active transport requires chemical energy because it is the movement of biochemicals from areas of lower concentration to areas of higher concentration. (diffen.com)
  • Active Transport uses ATP to pump molecules AGAINST/UP the concentration gradient. (diffen.com)
  • There are two types of active transport: primary and secondary. (diffen.com)
  • In primary active transport, specialized trans-membrane proteins recognize the presence of a substance that needs to be transported and serve as pumps, powered by the chemical energy ATP, to carry the desired biochemicals across. (diffen.com)
  • In secondary active transport, pore-forming proteins form channels in the cell membrane and force the biochemicals across using an electromagnetic gradient. (diffen.com)
  • Example of primary active transport , where energy from hydrolysis of ATP is directly coupled to the movement of a specific substance across a membrane independent of any other species. (diffen.com)
  • Reduced models of flow or mass transport in heterogeneous media are often adopted in the computational approach when the geometrical configuration of the system at hand is too complex. (nyu.edu)
  • Transports molecules through the cell membrane against the concentration gradient so more of the substance is inside the cell (i.e. a nutrient) or outside the cell (i.e. a waste) than normal. (diffen.com)
  • Four chapters describe transport of different types of molecules and ions across the plasma membranes of mammalian red cells. (springer.com)
  • All animals must transport such molecules through the blood stream to where they are needed around their bodies, and myoglobin is particularly important in vertebrates. (tcd.ie)
  • The phloem vascular system facilitates transport of energy-rich sugar and signalling molecules in plants, thus permitting long-range communication within the organism and growth of non-photosynthesizing organs such as roots and fruits. (royalsocietypublishing.org)
  • The phloem is a complex distribution system responsible for transporting a large number of organic molecules, defensive compounds and developmental signals by bulk fluid flow through a network of elongated sieve element cells which are connected to each other by porous sieve plates, effectively forming long tubes [ 1 ]. (royalsocietypublishing.org)
  • In the matter of passive diffusion, we investigate fundamental processes of biological development that are governed by multiple signaling molecules that create non-uniform concentration profiles known as morphogen gradients. (rice.edu)
  • Such transport typically occurs in cell membranes, which are thought to contain carriers which move molecules from one side of the membrane to the other. (thefreedictionary.com)
  • A process by which particles (e.g. ions, molecules) are transported across cell membranes, against, in almost all instances, the concentration gradient. (thefreedictionary.com)
  • In Biological Engineering, there are faculty studying the exclusion or passage of molecules through mucus barriers and other transport phenomena-related projects. (mit.edu)
  • Facilitated diffusion (also known as facilitated transport or passive-mediated transport) is the process of spontaneous passive transport (as opposed to active transport) of molecules or ions across a biological membrane via specific transmembrane integral proteins. (wikipedia.org)
  • Hence, small polar molecules are transported by proteins in the form of transmembrane channels. (wikipedia.org)
  • Larger molecules are transported by transmembrane carrier proteins, such as permeases, that change their conformation as the molecules are carried across (e.g. glucose or amino acids). (wikipedia.org)
  • As a result of investigations in many laboratories over the past four decades, our picture of the water permea- bility of the red cell membranes is rather detailed when compared to the water permeability of other biological membranes. (springer.com)
  • The transport can be across cell membranes and epithelial layers. (rush.edu)
  • The study presented in this document is the result of three years of research into the complex world of Molecular Dynamics applied to biological cell membranes. (cranfield.ac.uk)
  • The results of the interaction of shock waves with biological cell membranes have been particularly satisfactory and they have opened a new line of investigation into cancer research. (cranfield.ac.uk)
  • With this seminar we would like to bridge gaps and search for common ways on how to elucidate mechanisms of molecular transport through nanopores and -channels. (we-heraeus-stiftung.de)
  • There are two basic mechanisms for biological transport: passive diffusion and motor-driven active transport. (rice.edu)
  • This project aims to understand the mechanisms that generate Ca2+ signals in flagella and how they act to regulate the transport of flagellar proteins. (mba.ac.uk)
  • Since there are some uncertain factors in the fermentation, especially the transport mechanisms of 1,3-PD across cell membrane, the metabolic network contains multiple possible metabolic systems. (springer.com)
  • Zhang YD, Feng EM, Xiu ZL (2011) Robust analysis of hybrid dynamical system for 1,3-propanediol transport mechanisms in microbial continuous fermentation. (springer.com)
  • summarize the current knowledge on the molecular mechanisms underlying the short and long term regulation of water channels (AQPs) in principal cells, fluid transport by leaky epithelia and cotransporters of the symport type which behave as molecular water pumps. (mexmat.ru)
  • The regulation of sterol distribution between various membranes within the cell, and mechanisms behind specific intracellular sterol transport remain poorly understood. (oatd.org)
  • These recent advances, however, have not been matched with process-oriented studies addressing circulation and behavioral processes at the appropriate temporal and spatial scales, and only a few larval transport mechanisms have been considered for near shore open coastlines. (bco-dmo.org)
  • Results from this study will have important ecological implications as wave circulation / Stokes drift and internal motions may represent critical and regular transport mechanisms for larvae of marine organisms that must return to near shore habitats to complete their life cycle, thereby impacting population connectivity and management strategies used by coastal planners (e.g., ecosystem-based fisheries management, placement of Marine Protected Areas). (bco-dmo.org)
  • This second Volume in the series on Membrane Transport in Biology contains a group of essays on transport across single biological membranes separating the inside and outside of cells or organelles. (springer.com)
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  • Two essays concern the excitable membranes of nerve and muscle cells while the remaining four chapters treat transport across several types of intracellular membranes. (springer.com)
  • The process of maintaining these normal differences in electrolytic composition between the intracellular and extracellular fluids is active transport. (thefreedictionary.com)
  • Furthermore, proper intracellular transport via the endosomal trafficking system is crucial to maintain steady-state BDNF signaling. (escholarship.org)
  • Role of PGRMC1 in intracellular sterol transport . (oatd.org)
  • In this dissertation I describe my work with a putative progesterone binding protein, PGRMCl, and detail a novel role for this protein in intracellular sterol transport . (oatd.org)
  • In Chapter 1 I review what is currently known about regulation of cholesterol homeostasis and intracellular sterol transport . (oatd.org)
  • New research results from Aarhus University and New York University show how active transport of potassium can be achieved by a membrane protein complex that has roots in both ion pump and ion channel super-families. (eurekalert.org)
  • Physicists have created a unique combination of computer models, based on the theory of quantum mechanics, and applied them to a previously well characterised protein found in muscle to develop a new picture of how biomolecules transport and store oxygen (O2). (tcd.ie)
  • p>This section provides any useful information about the protein, mostly biological knowledge. (uniprot.org)
  • the transport relies on molecular binding between the cargo and the membrane-embedded channel or carrier protein. (wikipedia.org)
  • They are transported through aqueous compartments of cells or through extracellular space by water-soluble carriers (e.g. retinol binding protein). (wikipedia.org)
  • Characterization of the suitability of various grades of Hytrel™ polymer tubing for EMB applications was undertaken based on polymer water content, molecular transport/retention, and thermodynamic affinity for a range of putative HFW components including acids, bases, salts, organic acids and other organic species. (queensu.ca)
  • Presenting engineering fundamentals and biological applications in a unified way, this book provides learners with the skills necessary to develop and critically analyze models of biological transport and reaction processes.It covers topics in fluid mechanics, mass transport, and biochemical interactions, with engineering concepts motivated by specific biological problems.For researchers in biomedical engineering. (ecampus.com)
  • Presenting engineering fundamentals and biological applications in a unified way, this text provides students with the skills necessary to develop and critically analyze models of biological transport and reaction processes. (platekompaniet.no)
  • Looking of readers, Bend you for reading the view Principles and Models of Biological Transport a greener, leafier tutorial by email on work. (palmtennis.com)
  • Polyethylene glycols (PEGs) can improve the diffusivity of nanoparticles (NPs) in biological hydrogels, while extended PEG chains severely impede cellular uptake of NPs. (sciencemag.org)
  • Describes the need to obtain an import or export permit prior to the shipment of infectious substances and related biological substances, and/or materials that may contain infectious substances into or out of the country. (citiprogram.org)
  • Provides several lists of regulated biological materials including an example list of Category A Infectious Substances, a list of select agents, and the U.S. Department of Commerce (DOC) Commerce Control List (CCL). (citiprogram.org)
  • The movement of materials (including biochemical substances and drugs) through a biological system at the cellular level. (rush.edu)
  • The Packaging Requirement for Biological Substances and Hazardous Materials document provides information about packaging hazardous substances and materials for shipment. (umich.edu)
  • It covers topics in fluid mechanics, mass transport, and biochemical interactions, with engineering concepts motivated by specific biological problems. (platekompaniet.no)
  • The in- tention is to stress the close relationship between bioosmotic (transport) and biochemical processes in metabolism. (waterstones.com)
  • The in- tention is to emphasize the shut courting among bioosmotic (transport) and biochemical strategies in metabolism. (rockridgebrothers.com)
  • The simplest model of charge transport is the Poisson-Nernst-Planck system, a classical model whose mathematical properties are still not well-understood and still poses difficult computational challenges. (umn.edu)
  • Natural phenomena consist of simultaneously occurring transport processes and chemical reactions. (indigo.ca)
  • Active transport operates against gradients of chemical concentration, electrical charge or electrochemical state. (thefreedictionary.com)
  • 3DFATMIC simulates subsurface flow, transport, and fate of contaminants which are undergoing chemical and/or biological transformations (microbes). (scisoftware.com)
  • The processes governing the distribution of chemical and microbe concentration and temperature include: (1) reversible sorption, (2) microbe-chemical interaction, and (3) hydrological transport by flow advection/convection, dispersion/diffusion, and effect of unsaturation. (scisoftware.com)
  • Biological membranes outline the boundaries of cells and compartmentalize the chemical and bodily processes required for all times. (data-transport.com)
  • One could provide download ion transport through with Foot that she asks settling an design from chemical by living that what is often basic maintains Advanced. (kevinmbuck.com)
  • This course fulfills the requirements for: Shipping biological materials that contain small volumes of chemical preservatives such as ethanol or formalin. (umich.edu)
  • This book deals with energetics of transport processes, largely expressed in terms of the thermodynamics of irreversible pro- cesses. (waterstones.com)
  • This minimal model predicts a power law phloem distribution consistent with transport energy minimization, suggesting that energetics are more important than translocation speed at the leaf level. (royalsocietypublishing.org)
  • Mechanics and Energetics of Biological Transport by Prof. Dr. Erich Heinz (auth. (rockridgebrothers.com)
  • on 2017 download mechanics and energetics of biological transport 1978 powers will do you focus what you are reflecting for on Usenet. (cook-inseln.net)
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  • The course is designed to meet requirements of the International Air Transport Association (IATA) and the U.S. Department of Transportation (DOT). (citiprogram.org)
  • Discusses the packaging criteria to ensure compliance with the major requirements of the U.S. Department of Transportation (DOT), International Air Transport Association (IATA), and the U.S. Postal Service. (citiprogram.org)
  • One 'pump-like' subunit creates the energy input (similar to a motor), while a 'channel-like' subunit has been re-purposed to function as an active carrier mediating transport of potassium against a 10,000 fold gradient. (eurekalert.org)
  • It serves two biological functions: a site of redox reactions and a mechanical linkage that allows proteins to retain their three-dimensional structure . (wikipedia.org)
  • High water content polymers (=30% equilibrated water) were able to transport ionic species, facilitating the rapid transport of monovalent salts, while low water content polymers did not. (queensu.ca)
  • BioWater Technology is a company focusing on development of sales of innovative technologies and solutions for biological treatment of water and wastewater. (environmental-expert.com)
  • BRANNOCK M, HOWES T, JOHNS M, De Clercq B, KELLER J. CFD modelling of particle transport and biological reactors in a mixed wastewater treatment vessel. (ugent.be)
  • This hostile wastewater was circulated through the polymeric tubing, selectively transporting the organic compounds through the membrane for biological degradation by an enriched bacterial consortium. (queensu.ca)
  • As the majority of cellular cholesterol resides in the plasma membrane and membrane derived vesicles, regulation of cholesterol homeostasis depends upon the transport of sterols from the plasma membrane to the endoplasmic reticulum. (oatd.org)
  • This study addresses near shore cross-shore larval transport processes that operate over wide geographic areas in open coast settings, namely larval transport by wave circulation / Stokes drift, and by internal tidal bores. (bco-dmo.org)
  • Larval transport by wave circulation / Stokes drift is a ubiquitous process that has not been studied observationally, and it is not known how internal tidal bores deliver larvae to intertidal habitats. (bco-dmo.org)
  • Recent studies suggest that larval transport in the near shore zone plays a central role in larval dispersal and connectivity of shallow water species. (bco-dmo.org)
  • Recent advances in our understanding of hydrodynamic processes driving cross-shore flows and growing awareness of the importance of the processes to larval transport, however, make this study timely. (bco-dmo.org)
  • To warrant the self-contained structure of the volume, two preparatory chapters are included of which the first is on equilibrium thermodynamics and the second on transport and rate processes. (asme.org)
  • Finally this extended model highlight the promising usefulness of the biological activity in prediction more accurate results and promote the assessment of biological activity on the marine system. (utwente.nl)
  • The equations (a set of PDEs) of transport and fate of chemicals and microbes are derived based on the principle of conservation of mass and the hypothesis of Monod kinetics. (scisoftware.com)
  • Chintha C Handapangoda, Malin Premaratne, David M Paganin, and Priyantha R D S Hendahewa, "Technique for handling wave propagation specific effects in biological tissue: Mapping of the photon transport equation to Maxwell's equations," Opt. (osapublishing.org)
  • A novel algorithm for mapping the photon transport equation (PTE) to Maxwell's equations is presented. (osapublishing.org)
  • The mapping of the PTE to Maxwell's equations is required to model wave propagation through foreign structures implanted in biological tissue for sensing and characterization of tissue properties. (osapublishing.org)
  • Some complete sets of fundamental equations for the analyses of the transport phenomena fulfilling basic physical laws are derived in the article. (iospress.com)
  • In this project, the first goal is to design a plan to extend already successful in vitro biophysical research on copper transport proteins to (1) zinc and manganese transport proteins, for which less is known, and to (2) in vivo conditions exploring diseases related to problems with metal transport. (stias.ac.za)
  • Successful cellular function and organ development rely on the effective transport of proteins and other biomolecules to specific positions. (rice.edu)
  • Their transport must therefore be "facilitated" by proteins that span the membrane and provide an alternative route or bypass mechanism. (wikipedia.org)
  • The first two models investigate interchannel coupling between parallel channels in a one-way transport system. (rice.edu)
  • The third model considers junction of two parallel tracks, while the last model investigates two-way transport system with narrow entrances with coupling on the boundaries. (rice.edu)
  • BDNF endosomal transport is a key signaling system facilitating many aspects of healthy brain function and synaptic plasticity. (escholarship.org)
  • This transport system, which is highly specific for cystine and glutamate, increases the concentration of cystine inside the cell. (wikipedia.org)
  • In this system, the anionic form of cystine is transported in exchange for glutamate. (wikipedia.org)
  • The aim of this WE-Heraeus seminar is to bring together scientists working synthetic and biological nanopores and -channel both from theory and experiment. (we-heraeus-stiftung.de)
  • Fluctuation-driven transport in biological nanopores. (mendeley.com)
  • Chapter 2 is on transport and rate processes. (asme.org)
  • The Tranzport™ Hood is designed with mesh netting and bacteria-filtering fabric to restrict the spread of biological contaminants by the subject while still ensuring full visibility and breathability. (gtdist.com)
  • An EMB utilizing Hytrel™ 3548 tubing was employed for the biological treatment of frequently occurring, representative hydrophilic and hydrophobic organic contaminants at hyper-saline salt concentrations. (queensu.ca)
  • Epithelial transport physiology, George A. Gerencser (ed. (edu.au)
  • Ion channels mediate fast and passive 'downhill' transport, while ion pumps mediate slow and active 'uphill' transport against an electrochemical gradient. (eurekalert.org)
  • in active transport, movement takes place against an electrochemical gradient. (thefreedictionary.com)
  • This action creates the electrochemical gradient of sodium and potassium, providing the energy for active transport of various nutrients. (uniprot.org)
  • The newcomer to modeling and/or COMSOL can use the Case Studies in this book to self-learn modeling in biological/biomedical applications. (comsol.es)
  • Biological and Environmental Transport Process which is a required course for junior and senior students where the students already took considerable number of courses in their major. (unl.edu)
  • We have developed techniques to image Ca2+ in both the cytosol and the flagella of Chlamydomonas and have recently demonstrated that intraflagellar Ca2+ elevations regulate the important process of intraflagellar transport (IFT) (Collingridge et al, 2013). (mba.ac.uk)
  • Any process that stops, prevents or reduces the frequency, rate or extent of synaptic vesicle transport. (zfin.org)
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  • Biological transport is a key step of your quality process-the integrity of previous sampling phases and/or later analysis phases depends on it. (mappingcontrol.com)
  • 2. Graphically represent simple diffusion, facilitated diffusion and active transport. (coursehero.com)
  • Do the same for facilitated diffusion and active transport (use the range of O degrees to 80 degrees C.). 2. (coursehero.com)
  • Distinguish among the types of transport (simple diffusion, facilitated diffusion, and active transport), based on their kinetics and energy requirements. (gatech.edu)
  • The temperature dependence of facilitated transport is substantially different due to the presence of an activated binding event, as compared to free diffusion where the dependence on temperature is mild. (wikipedia.org)
  • Discusses the need for general security awareness training for all employees handling hazardous materials in the transport chain. (citiprogram.org)
  • Describes the need for all employees involved in the hazardous materials transport chain to be aware of the initial emergency response procedures and whom to notify in the event of an incident. (citiprogram.org)
  • Comparison of the biological actions of three purified heat-stable enterotoxins: effects on ion transport and guanylate cyclase activity in rabbit ileum in vitro. (asm.org)
  • Utilizing a specialized microfluidic isolation chamber for in vitro primary neuronal cultures, we demonstrate that Aβ oligomers compromise BDNF retrograde transport by impairing endosomal transport rate, resulting in impaired downstream signaling driven by BDNF. (escholarship.org)
  • Many experiments have now shown that double helical DNA can serve as a conduit for efficient charge transport (CT) reactions over long distances in vitro. (elsevier.com)
  • Thus, considerations of charge transport are central to any serious attempt to link structure to function in molecular biology. (umn.edu)
  • Charge transport has seen a resurgence in interest due partly to its central role in mathematical molecular biology and has seen emergent applications in other fields in biology and related areas, such as soft condensed matter physics. (umn.edu)
  • In particular, it is important to develop effective computational methods for calculating the transport properties of polymers and complex-shaped particle aggregates arising in materials science and biology. (umn.edu)
  • The path-integration method is evidently a powerful tool for computing basic transport properties of complex-shaped objects and should find wide application in polymer science, nanotechnological applications and biology. (umn.edu)
  • This project will examine near shore (region between 20 m depth and intertidal) physical and biological processes that account for the delivery of larvae to adult habitats. (bco-dmo.org)
  • The investigators hypothesize that a series of physical and biological events results in the delivery of invertebrate larvae to the intertidal habitat. (bco-dmo.org)
  • It points to the possibility of air ow through a stable two-layered DPPC phospholipid structure either from a numerical or physical and biological point of view and the existence of an alveolar membrane at the end of the bronchial tubes. (cranfield.ac.uk)
  • Two options for the Lagrangian numerical scheme in the transport module which enable and disable the adapted zooming scheme. (scisoftware.com)
  • The biological activity was incorporated into the numerical model by adjusting physical parameters in the reference situation, which are the critical bed shear stress, erosion rates and settling velocity. (utwente.nl)
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