Pulsedfieldgelelectrophoresis is a technique used for the separation of large DNA deoxyribonucleic acid DNA molecule s by applying an electric field that periodically changes direction to a gel matrix. Image Microbiologist 01.jpg right thumb 200px A microbiologist running a pulsedfieldgelelectrophoresis test used in bacterial typing. Historical background Standard DNA electrophoresisgelelectrophoresis techniques for separation of DNA molecules provided huge advantages for molecular biology research. However, it was unable to separate very large molecules of DNA effectively. DNA molecules larger than 15 20kb migrating through a gel will essentially move together in a size independent manner. At Columbia University in 1984, Schwartz and Charles Cantor Cantor developed a variation on the standard ... DNAs by pulsedfield gradient gelelectrophoresis. Cell. 1984 May 37 1 67 75. ref This technique became known as PulsedFieldGelElectrophoresis PFGE . The development of PFGE expanded the range of resolution ... Pulse field method References reflist DEFAULTSORT PulsedFieldGelElectrophoresis Category Biological techniques and tools Category Molecular biology Category Electrophoresis de PulsedField ... is relatively similar to performing a standard gelelectrophoresis except that instead of constantly ... longer than normal gelelectrophoresis due to the size of the fragments being resolved and the fact that the DNA does not move in a straight line through the gel. Theory While in general small fragments can find their way through the gel matrix more easily than large DNA fragments, a threshold length exists above 30 50 kb where all large fragments will run at the same rate, and appear in a gel as a single large diffuse band. However, with periodic changing of field direction, the various lengths ... one that runs through the central axis of the gel and two that run at an angle of 120 degrees ... their charge when field direction is changed, while smaller pieces will be quicker. Over the course ... more details
agarose gels should be run with a Pulsedfieldgelelectrophoresispulsedfieldelectrophoresis PFE , or field inversion electrophoresis . Most agarose gels are made with between 0.7 good separation ... 1977 DNA sequencing sequencing gels late 1970s agarose gels 1983 pulsedfieldgelelectrophoresis ...Infobox chemical analysis name Gelelectrophoresis image Gelelectrophoresis apparatus.JPG caption Gelelectrophoresis apparatus An agarose gel is placed in this buffer filled box and electrical field ... of gelelectrophoresis, providing a wide range of field specific applications. Nucleic acids ... Capillary electrophoresis br SDS PAGE br Two dimensional gelelectrophoresis br Temperature gradient gelelectrophoresis hyphenated Image DNAgel4wiki.png 200px thumb right Digital image of 3 plasmid ... is noted. Gelelectrophoresis is a method used in clinical chemistry to separate proteins by charge ... proteins. Gelelectrophoresis can also be used for separation of nanoparticles. Gelelectrophoresis uses a gel as an anticonvective medium and or sieving medium during electrophoresis, the movement ... 455 isbn 0 7167 4955 6 ref DNA Gelelectrophoresis is usually performed for analytical ... in the gel material. The gel is placed in an electrophoresis chamber, which is then connected ... bag in a refrigerator. Agarose gelelectrophoresis can be used for the separation of DNA fragments ... gels are common for many applications. ref cite web title Agarose gelelectrophoresis basic method ... than 200 kDa. ref Cite doi 10.1021 ma00195a048 ref Polyacrylamide Polyacrylamide gelelectrophoresis ... separation methods now use Agarose gelelectrophoresis agarose gels , except for particularly small ... A Denaturation biochemistry denaturing gel is a type of electrophoresis in which the native structure ... PAGE sodium dodecyl sulfate polyacrylamide gelelectrophoresis will unfold and denature the native structure of a protein . In contrast to native gelelectrophoresis , quaternary structure cannot be investigated ... more details
Image DNA Agarose Gel Electrophor.jpg 200px thumb right Digital printout of an agarose gelelectrophoresis ..., the gel , where an electric field induces the nucleic acids to migrate toward the anode , due to the net .... The types of gel most commonly used for nucleic acid electrophoresis are agarose gelelectrophoresis agarose for relatively long DNA molecules and polyacrylamide gelelectrophoresis polyacrylamide ... Nucleic acid electrophoresis is an analytical technique used to separate DNA or RNA fragments by size ... to pass through the gel. Longer molecules migrate more slowly because they experience more resistance within the gel. Because the size of the molecule affects its mobility, smaller fragments end ... the voltage or run time can be increased. Extended runs across a low voltage gel yield the most accurate resolution. Voltage is, however, not the sole factor in determining electrophoresis of nucleic ... acid to be separated can be prepared in several ways before separation by electrophoresis. In the case ... are placed in the wells of the gel and a voltage is applied across the gel for a specified amount ..., such as ethidium bromide . The gel shows bands corresponding to different nucleic acid molecules ... been run in a slab format such as that shown in the figure, but capillary electrophoresis has become important for applications such as high throughput DNA sequencing. Electrophoresis techniques used in the assessment of DNA damage include alkaline gelelectrophoresis and pulsedfieldgelelectrophoresis . The measurement and analysis are mostly done with a specialized gel analysis software. Capillary electrophoresis results are typically displayed in a trace view called an electropherogram . Factors ... molecule, smaller molecules travel faster, except in field inversion, where it is possible to have ..., e.g. DNA fragments from a restriction digest , linear DNA PCR products, or RNAs. Agarose gelelectrophoresis is widely used to resolve circular DNA with different supercoiling topology, and to resolve ... more details
Difference gelelectrophoresis DIGE is a form of gelelectrophoresis where up to three different protein samples can be labeled with fluorescent dye s for example Cy3, Cy5, Cy2 prior to two dimensional electrophoresis. Then, the three samples are mixed and put in the same gel. After the gelelectrophoresis, the gel is scanned with the excitation wavelength of each dye one after the other, so we are able to see each sample separately if we scan the gel at the excitation wavelength of the Cy3 dye, we will see in the gel only the sample that was labeled with that dye . This technique is used to see changes in protein abundance for example, between a sample of a healthy person and a sample of a person with disease . It overcomes limitations in traditional 2D electrophoresis that are due to inter gel variation. This can be considerable even with identical samples. Since the proteins from the different sample types e.g. healthy diseased, virulent non virulent are run on the same gel they can be directly compared. To do this with traditional 2D electrophoresis requires large numbers of time consuming repeats. In experiments comprising several gels, a common technique is to include an internal standard in each gel. The internal standard is prepared by mixing together several or all of the samples in the experiment. This allows the measurement of the abundance of a protein in each sample relative to the internal standard. Since the amounts of each protein in the internal standard is known to be the same in every gel, this method reduces inter gel variation. ref Alban, A., David, S. O., Bjorkesten, L., Andersson, C. et al. A novel experimental design for comparative two dimensional gel analysis Two dimensional difference gelelectrophoresis incorporating a pooled internal standard. Proteomics 2003, 3, 36 44. ref Software packages that can handle analysis of DIGE experiments include ... dimensional gelelectrophoresis Protomap proteomics PROTOMAP References Reflist Category Electrophoresis ... more details
. Two dimensional gelelectrophoresis , abbreviated as 2 DE or 2 D electrophoresis , is a form of gelelectrophoresis commonly used to analyze proteins. Mixtures of proteins are separated by two properties in two dimensions on 2D gels. Basis for separation 2 D electrophoresis begins with 1 D electrophoresis but then separates the molecules by a second property in a direction 90 degrees from the first. In 1 D electrophoresis, proteins or other molecules are separated in one dimension, so that all ... gelelectrophoresis native PAGE , proteins remain in their native state and are separated in the electric ... the first field. The proteins will be attracted to the more positive side of the gel because SDS is negatively ... SDS PAGE in protein separation. In summary, 2D gelelectrophoresis provides resolution according to two ... ME, Sarkar G title Comparative evaluation of two two dimensional gelelectrophoresis image analysis ... The state of the art in the analysis of two dimensional gelelectrophoresis images journal Appl. Microbiol ... ref See also Difference gelelectrophoresis QPNC PAGE Protomap proteomics PROTOMAP External ... Reflist DEFAULTSORT Two Dimensional GelElectrophoresis Category Molecular biology Category Laboratory techniques Category Electrophoresis de 2D Gelelektrophorese es Electroforesis en gel fr lectrophor se ... D gel. Because it is unlikely that two molecules will be similar in two distinct properties, molecules are more effectively separated in 2 D electrophoresis than in 1 D electrophoresis. The two dimensions ... point is called isoelectric focusing IEF . Thereby, a gradient of pH is applied to a gel and an electric potential is applied across the gel, making one end more positive than the other. At all pH values ... towards the more negative end of the gel and if they are negatively charged they will be pulled to the more positive end of the gel. The proteins applied in the first dimension will move along the gel and will accumulate at their isoelectric point that is, the point at which the overall ... more details
cleanup date September 2008 Temperature Gradient GelElectrophoresis TGGE and Denaturing Gradient GelElectrophoresis DGGE are forms of electrophoresis which use either a temperature or chemical gradient to denature the sample as it moves across an acrylamide gel. TGGE and DGGE can be applied to nucleic ... gelelectrophoresis. Fischer SG, Lerman LS ref ref Fischer S. G. and Lerman L. S. Separation of random ... gradient gelelectrophoresis DNA has a negative charge and so will move to the positive electrode in an electric field. A gel is a molecular mesh, with holes roughly the same size as the diameter of the DNA string. When an electric field is applied, the DNA will begin to move through the gel ... gradient gelelectrophoresis Denaturing gradient gelelectrophoresis DGGE works by applying a small sample of DNA or RNA to an electrophoresisgel that contains a Denaturation biochemistry denaturing ... by temperature gradient gelelectrophoresis Wong et al., 2002 . p53 mutation in pancreatic juices Lohr ... gradient gelelectrophoresis analysis of polymerase chain reaction amplified genes coding for 16S rRNA ..., they cannot be separated from each other by agarose gelelectrophoresis. However, sequence variations .... 2003. The University of the Sciences in Philadelphia. DEFAULTSORT Temperature Gradient GelElectrophoresis ... gel History DGGE was invented by Leonard Lerman , while he was a professor at SUNY Albany. ref Cell ... separation in standard electrophoresis . However, in TGGE, there is also a temperature gradient across the gel. At room temperature, the DNA will exist stably in a double stranded form. As the temperature ... they move through the gel decreases drastically. Critically, the temperature at which melting occurs ... stages. As a result of this melting, the DNA spreads through the gel and can be analyzed for single ... fragment completely into single strands. The process of denaturation on a denaturing gel is very ... positions in the gel. By comparing the melting behavior of the Polymorphism biology polymorphic ... more details
a supporting medium gelelectrophoresis SDS polyacrylamide gelelectrophoresis in short gelelectrophoresis, PAGE, or SDS electrophoresis, free flow electrophoresis , electrofocusing , isotachophoresis , affinity electrophoresis , immunoelectrophoresis , counterelectrophoresis , and capillary electrophoresis . Each method has many variations with individual advantages and limitations. gelelectrophoresis ... electrophoresisgel. Image Monoclonal gammopathy Multiple Myeloma.png thumb Serum protein electrophoresis ... gel methods SDS PAGE main SDS PAGE SDS PAGE, sodium dodecyl sulfate polyacrylamide gelelectrophoresis, describes a collection of related techniques to separate protein s according to their Electrophoresis ... gel as quickly as individual, denatured proteins due to pH 10.00 of the electrophoresis buffer. The separated ... native continuous polyacrylamide gelelectrophoresis QPNC PAGE procedure for elucidating metal ... hormones and enzymes, some of them also determined by electrophoresis. However, gelelectrophoresis ... Electroblotting Electrofocusing Gelelectrophoresis Polyacrylamide gelelectrophoresis, PAGE, or gelelectrophoresis Immunoelectrophoresis Immunofixation Native gelelectrophoresis QPNC PAGE ... cgi bin abstract 113343976 ABSTRACT Discontinuous native protein gelelectrophoresis ...Protein electrophoresis is a method for analysing the proteins in a fluid or an extract. The electrophoresis ... information about a specific protein. Because of practical limitations, protein electrophoresis is not suited ... by approximate size during electrophoresis. SDS is a strong detergent agent used to denature ... will be a linear function of the logarithm s of their molecular weights. Native gel methods ... G. year 1991 title Blue native electrophoresis for isolation of membrane protein complexes in enzymatically ... in a polyacrylamide gradient gel. It uses no charged dye so the electrophoretic mobility of proteins ... size of the gradient gel. In many cases this method has lower resolution than BN PAGE, but CN PAGE ... more details
Unreferenced date November 2006 A pulsedfield gradient is a short, timed pulse with spatial dependent field intensity. Any gradient is identified by four characteristics axis, strength, shape and duration. Pulsedfield gradient PFG techniques are key to magnetic resonance imaging , magnetic resonance imaging Magnetic resonance spectrosopy spatially selective spectroscopy and studies of diffusion via NMR. PFG techniques are widely used as an alternative to phase cycling in modern NMR spectroscopy. Common field gradients in NMR The effect of a uniform magnetic field gradient in the z direction on spin I, is considered to be a rotation around z axis by an angle sub I sub Gz where G is the gradient magnitude and sub I sub is the gyromagnetic ratio of spin I. It introduces a phase factor to the magnetizations z, sub I sub zG The time duration is of order ms. See also Gradient enhanced NMR spectroscopy DEFAULTSORT PulsedField Gradient Category Nuclear magnetic resonance Physics stub ... more details
. The value of pulsed electromagnetic field therapy has been shown to cover a wide range of conditions ... repair and depression. ref Markov, Marko S. Expanding Use of Pulsed Electromagnetic Field Therapies .... Reversal of delayed union of anterior cervical fusion treated with pulsed electromagnetic field ... with adjunctive pulsed electromagnetic field stimulation. Advances In Therapy 18.1 2001 12 20. MEDLINE. EBSCO. Web. 10 June 2010. ref In 1979 the FDA approved non invasive devices using pulsed ... in patients at high risk for non fusion. ref In 2004, pulsed electromagnetic field system was approved ... Shield of Mississippi Pulsed electromagnetic field systems with FDA PMA include the EBI Bone Healing ... clinical trial of pulsed electromagnetic field stimulation for cervical fusion Spine J, vol ... that a pulsed magnetic field applied across the site of a bone fracture can accelerate the healing ... evidence collected through clinical studies. ref Boopalan, PRJVC et a., Pulsed electromagnetic field ... electromagnetic field that is pulsed into the patients head. The treatment usually consists of two ... barry update231 History of Pulsed Electro Magnetic Field Therapy.pdf History of Pulsed Electromagnetic ...File Rhumart MBI 3000 RESC Controller.JPG thumb 200px Drolet s 1990 Rhumart system, a PEMF device. Pulsed electromagnetic field therapy PEMFT , also called pulsed magnetic therapy , pulse magnetotherapy , or PEMF , is a reparative technique most commonly used in the field of orthopedics for the treatment ... June 2010. ref ref Mooney, V. A randomized double blind prospective study of the efficacy of pulsed .... 10 June 2010. ref History The use of magnetic field therapy in clinical applications dates back over ... Fusion Procedures.html&source emed Blue Cross & Blue Shield of Mississippi Pulsed electromagnetic field systems with FDA PMA include the EBI Bone Healing System from Electrobiology, Inc., which ... salvage with pulsed electromagnetic fields. American Journal Of Orthopedics Belle Mead, N.J. 33.1 2004 ... more details
74 page 1607 year 1978 ref See also Affinity electrophoresis Capillary electrophoresis Dielectrophoresis DNA electrophoresis Electroblotting Electrofocusing Gelelectrophoresis Immunoelectrophoresis Isotachophoresis Pulsedfieldgelelectrophoresis References Commons Electrophoresis Reflist Further ... as determined by macrorestriction digests resolved by pulsedfieldgelelectrophoresis journal ...For specific types of electrophoresis for example, the process of administering medicine, iontophoresis File Motion by electrophoresis of a charged particle.svg thumb 300px Illustration of electrophoresis File Retardation Force.svg thumb 300px Illustration of electrophoresis retardation Electrophoresis ... of a spatially uniform electric field . ref cite book first J. last Lyklema title Fundamentals ... 1809 ref who noticed that the application of a constant electric field caused clay particles dispersed ... surface and the surrounding fluid. Electrophoresis of positively charged particles cations is called cataphoresis , while electrophoresis of negatively charged particles anions is called anaphoresis . History See also History of electrophoresis Theory The dispersed particles have an electric surface charge , on which an external electric field exerts an electrostatic Coulomb force . According ... charge. The electric field also exerts a force on the ions in the diffuse layer .... When the electric field is applied and the charged particle to be analyzed is at steady movement ... of low Reynolds number and moderate electric field strength E , the velocity of a dispersed particle v is simply proportional to the applied field, which leaves the electrophoretic Electrical mobility ... of electrophoresis was developed in 1903 by Marian Smoluchowski Smoluchowski ref cite journal first ... not include Debye length sup 1 sup . However, Debye length must be important for electrophoresis ... not only for electrophoresis theory but for many other electrokinetic theories. This model is valid ... more details
Wiktionary electrophoresisElectrophoresis is the motion of dispersed particles relative to a fluid under the influence of a spatially uniform electric field. Electrophoresis can also refer to Interface and Colloid Science Dielectrophoresis , similar motion in a space non uniform electric field Microelectrophoresis , a method of studying electrophoresis of various dispersed particles using optical microscopy Electrophoretic light scattering , a method for measuring electrophoretic mobility based on dynamic light scattering Molecular Biology and Biochemistry Affinity electrophoresis , used to separate and characterize biomolecules on basis of their molecular characteristics through binding to another biomolecule Capillary electrophoresis , commonly used to separate biomolecules by their charge and frictional forces Gelelectrophoresis , a technique used by scientists to separate molecules based on physical characteristics such as size, shape, or isoelectric point DNA electrophoresis , a specific type of gelelectrophoresis used to analyse DNA Protein electrophoresis , a specific type of gelelectrophoresis used to analyse proteins Two dimensional gelelectrophoresis , a specific type of gelelectrophoresis commonly used to analyse proteins which involves two separation mechanisms to separate molecules SDS PAGE , sodium dodecyl sulfate polyacrylamide gelelectrophoresis, commonly used to analyse proteins Immunoelectrophoresis , used to separate and characterize biomolecules on basis their molecular characteristics as well as binding of antibodies Medicine Iontophoresis , a way of rapidly administering drugs through the skin Media support Electrophoretic display , a device that displays media contents using charged pigment particles in an applied electric field Other Electrophoresis journal Electrophoresis journal disambiguation Category Colloidal chemistry Category Electrophoresis Category Laboratory techniques pt Eletroforese ... more details
acid Aerogel Hydrocolloid Gelelectrophoresis , Agarose gelelectrophoresis , 2 D electrophoresis , SDS PAGE Gel filtration chromatography , Gel permeation chromatography Paste rheology Food rheology Alpha GEL Silicone GEL References Reflist 10. I. Katime, O. Katime, D. Katime.Los materiales inteligentes ...other uses Image Hairgel.JPG thumb right An upturned vial of hair gel A gel from the Latin lat. gelu ... within the fluid that give a gel its structure hardness and contribute to stickiness ... takes up more space Gel is a colloid solution of dispersion phase as liquid and dispersion medium ... of polymer chains that are hydrophilic, sometimes found as a colloid al gel in which water ... polymers polyethylene oxide , polyAMPS and polyvinylpyrrolidone Water Gel Explosives water gel explosives ... z r d l is a solid formed from a gel by drying with unhindered shrinkage. Xerogels usually ... the porous gel into a dense glass . Properties Many gels display thixotropy they become fluid when ... in parasite control. For example, the long finned pilot whale secretes an enzymatic gel that rests ... range of products, from foods to paints and adhesives. In fiber optics communications, a soft gel resembling hair gel in viscosity is used to fill the plastic tubes containing the fibers. The main purpose of the gel is to prevent water intrusion if the buffer tube is breached, but the gel also buffers .... Additionally, the gel acts as a processing aid when the cable is being constructed, keeping ... Characterization of Agarose Gel Scaffolds External links http www.iupac.org goldbook X06700.pdf ... Gels Category Drug delivery devices Category Dosage forms ar bs Gel ca Gel col loide cs Gel da Gel de Gel et Geel el es Gel eo elo fa fr Gel mat riau gl Xel ko hr Gel id Gel it Gel he kk la Gel lt Gelis hu G l nl Gel ja no Gel kjemi pl el pt Gel ru simple Gel sl Gel fi Geeli sv Gel th uk vi Gel ... more details
The abbreviation GEL may refer to GEL General Extension Language , scripts used to configure the Code Composer Studio , an IDE for Texas Instruments DSPs and GPPs. GEL Georgian lari , an ISO 4217 code. See also gel disambiguation . Disambig de GEL ... more details
TF9373300524 ref The method spread slowly until the advent of effective zone electrophoresis methods in the 1940s and 1950s, which used filter paper or gel s as supporting media. By the 1960s, increasingly sophisticated gelelectrophoresis methods made it possible to separate biological based on minute ... biology . Gelelectrophoresis and related techniques became the basis for a wide range of biochemical ...The history of electrophoresis begins in earnest with the work of Arne Tiselius in the 1930s, and new separation process es and chemical analysis techniques based on electrophoresis continue to be developed ... apparatus for moving boundary electrophoresis , which was described in 1937 in the well known ..., DNA sequencing , and many more. Electrophoresis before Tiselius Early work with the basic principle of electrophoresis dates to the early 19th century, based on Faraday s laws of electrolysis proposed ... and behavior of small ions moving through aqueous solution s under the influence of an electric field ... of Tiselius s moving boundary electrophoresis method. ref Vesterberg, p. 5 ref Development and spread ... of electrophoresis in analyzing chemical mixtures. Its development, significantly funded by the Rockefeller ... of chemical research. Rise of zone electrophoresis By the late 1940s, new electrophoresis methods were beginning to address some of the shortcomings of the moving boundary electrophoresis of the Tiselius .... Rather than charged molecules moving freely through solutions, the new methods used solid or gel ... zone electrophoresis . Zone electrophoresis found widespread application in biochemistry after Oliver Smithies introduced starch gel as an electrophoretic substrate in 1955. Starch gel and later ... in related proteins. Widespread application Since the 1950s, electrophoresis methods have diversified considerably, and new methods and applications are still being developed. See also Electrophoresis History of chromatography History of molecular biology History of biochemistry Electrophoresis journal ... more details
T Gel is a medicated shampoo produced by Neutrogena . It reduces psoriasis , dandruff , seborrheic dermatitis , and Dihydrotestosterone DHT levels. It has a limited antiandrogen effect ref http www.hairlosstalk.com interact viewtopic.php?p 455381&sid 0d729bb5efd110a908e36787b3dbe1bc p455381 ref , and is used by some people to slow hair loss. In Merck & Co. Merck studies to determine the effectiveness of Propecia as a hairloss treatment for FDA approval, all subjects were required to use T Gel in order to standardize everyone s shampoo regimen and to prevent seborrheic dermatitis from interfering with potential scalp regrowth. Its primary active ingredient is coal tar . There is debate about coal tar as a carcinogen and T Gel shampoo may be labeled as such in CA http www.hairlosstalk.com newsletter article109.htm Drug Facts 2 Neutar Solubilized, Anti dandruff. 0.5 Coal Tar Extract, Anti seborrheic dermatitis, Anti psoriasis See also Baldness treatments References references http www.tgel.com www.tgel.com Official web site product stub Category Shampoos Category Johnson & Johnson brands ... more details
Unreferenced stub auto yes date December 2009 Hemoglobin electrophoresis is a blood test that can detect different types of hemoglobin . It uses the principles of gelelectrophoresis to separate out the various types of hemoglobin and is a type of native gelelectrophoresis . The test can detect abnormal levels of HbS, the form associated with sickle cell disease , as well as other abnormal hemoglobin related blood disorders, such as hemoglobin C . It can also be used to determine whether there is a deficiency of any normal form of hemoglobin, as in the group of diseases known as thalassemia s. Different hemoglobins have different charges, and according to those charges and the amount, hemoglobins move at different speeds in the gel whether in alkaline gel or acid gel.The hemoglobin electrophoresis is also known to be thalessemia screening, this also can be helpful for the patient who is frequently need of fresh blood transfusion. The patient needs blood transfusion because the body is unable to produce enough hemoglobin to satisfy the body s requirement. See Hemoglobinopathy Migration patterns Migration Patterns . Electrophoresis is done by the use of cellulose acetate. After running electrophoresis at 150 to 200 volt, stain the cellulose acetate gel with Ponceau red. Thalassemia major Hb F level and Hb A2 levels increase. DEFAULTSORT Hemoglobin Electrophoresis Category Blood tests Treatment stub ... more details
electrophoresis , electrically charged analytes move in a conductive liquid medium under the influence of an electric field . Introduced in the 1960s, the technique of capillary electrophoresis ... longer strands more than shorter strands. This is called capillary gelelectrophoresis . This is a high resolution alternative to slab gelelectrophoresis . Some capillary electrophoresis systems can ...Infobox chemical analysis name Capillary electrophoresis image caption acronym CE classification Electrophoresis analytes Biomolecule s br Chirality chemistry Chiral molecules manufacturers related gelelectrophoresis br Two dimensional gelelectrophoresis hyphenated Capillary electrophoresis mass spectrometry Capillary electrophoresis CE , also known as capillary zone electrophoresis CZE , can be used ... electrophoresis is relatively simple. A basic schematic of a capillary electrophoresis system is shown ... action , pressure, or siphoning . The migration of the analytes is then initiated by an electric field ... 2007 . ref Image Capillaryelectrophoresis.gif frame Figure 1 Diagram of capillary electrophoresis system Modes of separation The separation of compounds by capillary electrophoresis is dependent on the differential migration of analytes in an applied electric field. The electrophoretic migration velocity ... where math mu p math is the electrophoretic mobility and E is the electric field strength. The electrophoretic ... can be determined experimentally from the migration time and the field strength math mu p left frac ... time , math V math is the applied voltage field strength , and math L t math is the total length of the capillary. ref name Cucino Since only charged ions are affected by the electric field, neutral analytes are poorly separated by capillary electrophoresis. The velocity of migration of an analyte in capillary electrophoresis will also depend upon the rate of electroosmotic flow EOF of the buffer ... name Cucino The velocity math u math of an analyte in an electric field can then be defined as math ... more details
wiktionary Gelgel gelation gels hydrogel A gel is a complex solid but fluid substance with liquid like properties. Gel may also refer to tocright Personal care Hair gel , a gel used for setting hair styles Shower gel , a cosmetic body wash Personal lubricant used for sex purpose Hair coloring gel, a form of hair dye Pharmaceutics and physical chemistry Gel capsule gel cap , a gelatinous capsule in which a drug is held Sol gel , a colloidal suspension that can be gelled to form a solid Hydrogel or Aquagel, a water insoluble polymer Xerogel , a dried gel that, when heated, becomes a dense glass Aerogel , a gel that has been dehydrated under supercritical conditions such that the liquid has been replaced with gas Biochemistry Gelelectrophoresis , the separation of deoxyribonucleic acid, ribonucleic acid, and protein through an electric charge Polyacrylamide gel , a separation matrix used in electrophoresis of biomolecules, called polyacrylamide gelelectrophoresis or PAGE Agarose gelelectrophoresis , the separation of usually large organic molecules by size Gel extraction , a technique used to isolate a fragment of intact DNA Gel filtration chromatography , where gel spheres with varying matrix sizes are used to separate proteins in solution with water Gel permeation chromatography , as above, but the proteins are in solution with an organic solvent Entertainment Color gel , a transparent colored material used to shade stage lighting List of The Tribe characters GelGel , a fictional ... series GelGel , an enemy from The Legend of Zelda series Gel song Gel song , a 1995 song by Collective Soul Popular culture Gel bracelets , wristband similar to a large diameter O ring Gel pen , gel inked ballpoint pens Gel conference GEL, or Good Experience Live Other uses G l, a city in Armenia, now called Lichk Gel battery is a rechargeable valve regulated lead acid battery with a gelified electrolyte Silica gel , a granular, porous form of silica made synthetically from sodium silicate ... more details
3 MHz to 300 GHz depending on the type and application Therapeutic Uses of Pulsed Radiofrequency Pulsed radiofrequency fields are an emerging technology used in the medical field for the treatment ... tissue wounds. There are two general categories of pulsed radiofrequency field therapies based on their mechanism .... Pulsed radiofrequency therapy technologies are described by the acronyms EMF electromagnetic field , PEMF ref 7. Basset, C.A. , Fundamental and practical aspects of therapeutic uses of pulsed electromagnetic ... Uses of Pulsed magnetic Field Exposure A review. Radio Science Bulletin No.307, 2003 ref pulsed electromagnetic fields , PRF pulsed radiofrequency fields ,and PRFE ref 9. Porreca, E.G. and G.M. Giordano Jablon, Treatment of Severe Stage III and IV Chronic Pressure Ulcers Using Pulsed Radio Frequency ...Pulsed radiofrequency is the technique whereby radio frequency RF oscillations are gated at a rate of pulses ... Relay League, Inc. CT, 06111 USA, 1997, ISBN 0 87259 174 3 ref Pulsed Radio Frequency Wave Forms The figure below shows an example of a generalized pulsed radio frequency waveform as seen with an oscilloscope ... MHz of RF energy. The duty cycle for a pulsed radio frequency is the percent time the RF packet is on, 4.2 ... MHz of RF energy gallery Pulsed Radio Frequency and Radar The best understood and applied use of pulse ... or scatter of pulsed radiofrequency waves emitted from a transmitter which are then detected ... for tumors and cardiac arrhythmia has been used for over 25 years, non thermal pulsed radio frequency ... pulsed radio frequency energy delivered via catheter at frequencies of 300 750 kHz for 30 to 60 seconds Thermal pulsed radio frequency takes advantage of high current delivered focally by an electrode ... used for lesioning of peripheral nerves to reduce chronic pain. Non thermal therapeutic uses of pulsed ... proliferation induction healing chronic wounds through low energy pulsed radiofrequency. Int J Low Extrem Wounds, 2009. 8 1 p. 45 51 ref pulsed radiofrequency energy . These technologies have been varied ... more details
field is established around the tubing in a way similar to gel electrophresis long enough so that the DNA is removed from the gel but remains in the tube. The tube solution can then be pipetted ...In molecular biology , gel extraction or gel isolation is a technique used to isolate a desired fragment of intact DNA from an agarose gel following agarose gelelectrophoresis . After extraction, fragments of interest can be mixed, precipitated, and enzymatically ligated together in several simple steps. This process, usually performed on plasmids , is the basis for rudimentary genetic engineering . After DNA samples are run on an agarose gel, extraction involves four basic steps identifying the fragments of interest, isolating the corresponding bands, isolating the DNA from those bands, and removing the accompanying salts and stain. To begin, UV light is shone on the gel in order to illuminate all the ethidium bromide stained DNA. Care must be taken to avoid exposing the DNA to mutagenic radiation for longer than absolutely necessary. The desired band is identified and physically removed with a cover slip or razor blade . The removed slice of gel should contain the desired DNA inside. An alternative method, utilizing SYBR Safe DNA gel stain and blue light illumination, avoids the DNA ... of interest exist. Spin Column Extraction Gel extraction kits are available from several major ... generally call for the dissolution of the gel slice in 3 volumes of chaotropic agent at 50 ... in a small volume 30 L of water or buffer. ref Zymoclean Gel DNA Recovery Kit Instruction Manual. http www.zymoresearch.com zrc pdf D4001i.pdf ref Dialysis The gel fragment is placed in a dialysis ... of gel extraction involves creating a folded pocket of Parafilm wax paper and placing the agarose ... liquifying the gel and its contents. The liquid droplets can then be directed out of the pocket ... fragment. The disadvantage of gel isolation is that background can only be removed if it can be physically ... more details
Pulsed power is the term used to describe the science and technology of accumulating energy over a relatively long period of time and releasing it very quickly thus increasing the instantaneous power. Overview Steady accumulation of energy followed by its rapid release can result in the delivery of a larger amount of instantaneous power physics power over a shorter period of time although the total energy is the same . Energy is typically stored within electrostatic field s capacitor s , magnetic field s inductor , as mechanical energy using large flywheel s connected to special purpose high current alternator s , or as chemical energy high current lead acid battery electricity batteries , or explosives . By releasing the stored energy over a very short interval a process that is called energy compression , a huge amount of peak power can be delivered to a External electric load load . For example, if one joule of energy is stored within a capacitor and then evenly released to a load over one second, the peak power delivered to the load would only be 1 watt. However, if all of the stored energy were released within one microsecond , the peak power would be one megawatt , a million times greater. Examples where pulsed power technology is commonly used include radar , particle accelerator s, ultrastrong magnetic field s, fusion power fusion research, electromagnetic pulse s, and high power pulsed laser s. History Pulsed Power was first developed during World War II for use in Radar . Radar requires short high power pulses. After the war development continued in other applications leading to the super pulsed power machines at Sandia National Laboratories . See also Marx generator Explosively pumped flux compression generator Compulsator Electromagnetic pulse EMP Z machine Particle ... ABB Pulsed Power Manufacturer of semiconductor based replacements for thyratrons DEFAULTSORT Pulsed Power Category Power physics Category Pulsed power fr Hautes puissances puls es ... more details
unreferenced date September 2011 Affinity electrophoresis is a general name for many analytical methods used in biochemistry and biotechnology . Both qualitative and quantitative information may be obtained through affinity electrophoresis. The methods include the so called mobility shift electrophoresis, charge shift electrophoresis and affinity capillary electrophoresis . The methods are based on changes in the electrophoresis electrophoretic pattern of molecules mainly macromolecules through biospecific interaction or complex formation . The interaction or binding of a molecule, charged or uncharged, will normally change the electrophoretic properties of a molecule. Membrane proteins may be identified by a shift in mobility induced by a charged detergent . Nucleic acid s or nucleic acid fragments may be characterized by their affinity to other molecules. The methods has been used for estimation of binding constant s, as for instance in lectin affinity electrophoresis or characterization of molecules with specific features like glycan content or ligand binding. For enzymes and other ligand binding proteins, onedimensional electrophoresis similar to counter electrophoresis or to immunoelectrophoresis rocket immunoelectrophoresis , affinity electrophoresis may be used as an alternative quantification of the protein. Some of the methods are similar to affinity chromatography by use of immobilized ligands . See also Immunoelectrophoresis Category Electrophoresis Category Molecular biology Category Protein methods Category Laboratory techniques Category Protein protein interaction assays biochemistry stub ... more details
arrows in the blue Bloch sphere to the green pulse sequence Pulsed electron paramagnetic resonance ... moment electron spins in a constant magnetic field . This alignment is perturbed by applying a short oscillating field, usually a microwave pulse. One can then measure the emitted microwave signal ... extensive knowledge on structural and dynamical properties of paramagnetic compounds. Pulsed EPR techniques such as electron spin echo envelope modulation ESEEM or pulsed electron nuclear double ... wave methods. This resolution can be improved in pulsed EPR by investigating interactions separately ... 1958PhRv..109.1867B ref . A magnetic field of 0.62 mT was used requiring a frequency of 17.4 MHz ... of the pioneering early pulsed EPR was conducted in the group of W. B. Mims at Bell Labs during the 1960s. In the first decade only a small number of groups worked the field, because of the expensive ... bibcode 1961PhRv..123.2059M ref . Pulsed electron nuclear double resonance ENDOR was invented in 1965 by Mims ref name PENDOR cite journal author Mims, W. B. title Pulsed endor experiments ..., pulsed NMR transitions are detected with pulsed EPR. ESEEM and pulsed ENDOR continue ... commercial pulsed EPR and ENDOR spectrometers in the X band frequency range, lead to a fast growth of the field. In the 1990s, parallel to the upcoming high field EPR, pulsed EPR and ENDOR became a new fast advancing magnetic resonance spectroscopy tool and the first commercial pulsed EPR ... of pulsed EPR is similar to NMR spectroscopy. Differences can be found in the relative size of the magnetic ... description. For a better understanding of the concept of pulsed EPR let us consider the effects ... reference frame rotating frame . In the laboratory frame the static magnetic field B sub 0 sub is assumed to be parallel to the z axis and the microwave field B sub 1 sub parallel to the x axis. When an electron spin is placed in magnetic field it experiences a torque which causes its ... more details
Infobox journal title Electrophoresis cover File Electrophoresis Journal.jpg 200px editor Ziad El Rassi discipline Biochemistry , analytical chemistry abbreviation Electrophoresis publisher Wiley VCH country frequency Biweekly history 1980 present openaccess license impact 3.569 impact year 2010 website http onlinelibrary.wiley.com journal 10.1002 ISSN 1522 2683 link1 http onlinelibrary.wiley.com journal 10.1002 ISSN 1522 2683 currentissue link1 name Online access link2 http onlinelibrary.wiley.com journal 10.1002 ISSN 1522 2683 issues link2 name Online archive JSTOR OCLC 7297725 LCCN 83640492 CODEN ELCTDN ISSN 0173 0835 eISSN 1522 2683 Electrophoresis is a Peer review peer reviewed scientific journal covering all aspects of electrophoresis , including new or improved analytical and preparative methods, development of theory, and innovative applications of electrophoretic methods in the study of proteins, nucleic acids, and other compounds. Abstracting and indexing The journal is abstracted and indexed in columns list 2 Advanced Polymer Abstracts AGRICOLA Animal Breeding Abstracts Science Citation Index Biochemistry & Biophysics Citation Index Biological Abstracts BIOSIS Previews CAB Abstracts CAB HEALTH CAB Direct Cambridge Scientific Abstracts Civil Engineering Abstracts Current Contents Life Sciences EMBASE Global Health Index Medicus MEDLINE PubMed Inspec METADEX Science Citation Index Scopus According to the Journal Citation Reports , the journal has a 2010 impact factor of 3.569, ranking it 12th out of 71 journals in the category Chemistry, Analytical ref name WoS cite book year 2011 chapter Journals Ranked by Impact Chemistry, Analytical title 2010 Journal Citation Reports publisher Thomson Reuters edition Science accessdate 2011 12 15 work Web of Science postscript ... ISSN 1522 2683 Category Electrophoresis Category Biochemistry journals Category Electrochemistry ... Wiley & Sons academic journals chem journal stub fr Electrophoresis ... more details
Image Rectification.svg thumb right 350px Rectification of a sine wave produces pulsed DC. Pulsed DC or PDC is the form of wave produced from a Rectifier half wave rectifier or a Rectifier full wave rectifier . Full wave rectified ac is more commonly known as Rectified AC . PDC has some characteristics of both alternating current AC and direct current DC waveforms. The voltage of a DC wave is roughly constant, whereas the voltage of an AC waveform continually varies between positive and negative values. Like an AC wave, the voltage of a PDC wave continually varies, but like a DC wave, the sign of the voltage is constant. Most modern electronic items function using a DC voltage, so the PDC waveform must usually be smoothed before use. A reservoir capacitor converts the PDC wave into a DC waveform with some superimposed ripple. When the PDC voltage is initially applied, it charges the capacitor, which acts as a short term storage device to keep the output at an acceptable level while the PDC waveform is at a low voltage. Voltage regulation is often also applied using either linear regulator linear or switching regulator switching regulation. Pulsed DC may also be generated for purposes other than rectification. It is often used to reduce electrical arcs when generating thin carbon films, http www.astex.com eni rcsi TN.html and for increasing yield in semiconductor fabrication by reducing electrostatic build up. http www.freepatentsonline.com 5249094.html It is also generated by the voltage regulators in some automobiles, e.g., the classical air cooled Volkswagen Beetle. Category Electric power electronics stub ... more details
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