contact with the hydrophobic leaf. The hydrophobiceffect is fundamentally based on the tendency of polar ... between water and hydrocarbons. At the macroscopic level, the hydrophobiceffect is apparent when oil and water are mixed together and form separate layers or the beading of water on hydrophobic surfaces such as waxy leaves. At the molecular level, the hydrophobiceffect is an important force ... water. Folding of macromolecules In the case of protein folding , the hydrophobiceffect is important to understand the structure of proteins that have hydrophobic amino acid s, such as alanine , valine ... In biochemistry , the hydrophobiceffect can be used to separate mixtures of proteins based ... of salt increase the hydrophobiceffect and its concentration decreased as the separation goes on. The origin of hydrophobiceffect File Liquid water hydrogen bond.png right thumb 200px Dynamic hydrogen bonds between molecules of liquid water The hydrophobiceffect represents the tendency of water ... . Polar chemical groups, such as OH group in methanol do not cause the hydrophobiceffect. However ... effect New York Wiley.1980 . ref The hydrophobiceffect can be quantified by measuring the partition ... scanning calorimetry calorimetry . The hydrophobiceffect was found to be entropy driven at room ..., the hydrophobiceffect as measured by the free energy of transfer is only weakly temperature dependent ... Reflist Further reading Charles Tanford 1973 . The HydrophobicEffect Formation of Micelles and Biological ... hydrophobic interaction file H02907 ref ref Interfaces and the driving force of hydrophobic assembly ... Amphiphiles are molecules that have both hydrophobic and hydrophilic domains. Detergent s are composed of amphiphiles that allow hydrophobic molecules to be solubilized in water by forming micelle ... the protein. Structures of water soluble proteins have a hydrophobic core in which side chains are buried .... Minimizing the number of hydrophobic side chains exposed to water is the principal driving force ... more details
Unreferenced date March 2007 Orphan date February 2009 Hydrophobic concrete is concrete in which water is repelled by making the concrete hydrophobic . Hydrophobic concrete also meets the standards outlined in the definition of waterproof concrete . DEFAULTSORT Hydrophobic Concrete Category Concrete material stub ... more details
hydrophobiceffect associated with the lipid protein hydrophobic mismatch, and the elastic deformation ... the free energy of the entire system. Effect of mismatch The membrane hydrophobic mismatch has ...Membrane hydrophobic mismatch is the difference between the hydrophobic length of Alpha helices helices of the integral protein s and the hydrophobic thickness of the membrane they span. ref Duque, D ... of energy requirement, in order to avoid unfavorable exposure of hydrophobic surfaces to a hydrophilic environment, the hydrophobic length of the integral proteins is supposed to be approximately equal to the hydrophobic bilayer thickness. Structure and organization A biological membrane is a kind ... membrane is approximately same with the hydrophobic core of lipid bilayer. At the same time, the protein embedded inside one membrane could have different hydrophobic length, for example Escherichia ... adaptations to mismatch Image Hydrophobic Mismatch.JPG thumb 450px Hydrophobic Mismatch. In order to avoid unfavorable exposure of hydrophobic surfaces to a hydrophilic environment, biological ... chains are flexible, the condition of hydrophobic matching can be fulfilled by stretching, squashing .... Lewis, A. H. Hodges, R. S. McElhaney, R. N. Biochemistry. 1992, 31, 11579 11588. ref When the hydrophobic part of a transmembrane protein is too large to match the hydrophobic bilayer thickness left part of Figure , the protein might aggregate in the membrane to minimize the exposed hydrophobic area or tilt to reduce their effective hydrophobic length. They could also adopt another conformation by changing the orientation of hydrophobic and hydrophilic side chains near the interface. Lipids in turn ... type of aggregate, thereby disrupting the bilayer organization. When the hydrophobic part of a transmembrane protein is too small to match the hydrophobic bilayer thickness right part of Figure , again ... evidence that a hydrophobic mismatch can lead to protein aggregation in fluid bilayer were founded ... more details
Hydrophobic soil soil that is hydrophobic causes water to collect on the soil surface rather than infiltration hydrology infiltrate into the ground. forest fire Wild fire s generally cause soils to be hydrophobic temporarily, which increases water repellency, surface runoff and erosion in post burn sites. Soil Dispersion soil dispersion due to sodification causes similar problems. Hydrophobic soils are created when hydrocarbon residue is created after organic material is burnt and soaks into empty pore spaces in the soils, making it impervious to water. References http www.cnr.uidaho.edu extforest F5.pdf After the Fires Hydrophobic Soils PDF http lamar.colostate.edu rmoench hydrophobic.pdf What are Hydrophobic Soils? PDF Hyndman, D., and D. Hyndman. 2010. Natural Hazards and Disasters, 3e. Brooks Cole. Dryness, plant chemicals, aromatic oils, and other chemicals also cause hydrophobicity. DEFAULTSORT Hydrophobic Soil Category Hydrology Category Types of soil ... more details
Hydrophobic silica is a silica that has hydrophobic groups chemical bond chemically bonded to the surface. Hydrophobic silica can be made both from silica fume fumed and precipitated silica . The hydrophobic groups are normally alkyl or polydimethylsiloxane chains. Manufacturing Silica is hydrophilic due to silanol Si OH groups on the surface. These silanol groups may be chemically reacted with various reagents to render the silica hydrophobic. Hydrophobic fumed silica Fumed silica can be reacted with chlorosilanes in a fluidized bed reactor at 400 celsius C ref Citation last Br nner first H. authorlink coauthors Schutte, D. year 1965 month title journal Chem. Ing. Tech. volume 89 issue pages 437 id url accessdate quote ref Hydrophobic precipitated silica Precipitated silica can be hydrophobized with e.g. alkylchlorosilane s or trimethylsilanol in the precipitated solution. The hydrophobised silica is filtered, washed, dried, and tempered to 300 400 celsius C to finish the reaction. ref citation inventor last Reinhardt inventor first H. inventorlink inventor2 last et al. inventor2 first inventorlink2 publication date 12.02.1976 issue date 25.07.1974 title country code DE AS description patent number 2,435,860 ref ref citation inventor last Roderburg inventor first inventorlink inventor2 last inventor2 first inventorlink2 publication date 04.02.1960 issue date 25.06.1959 title country code DE OS description patent number 1,074,559 ref Properties Rheology control. Suspension chemistry Suspension and stability behavior. Mechanical optical properties modification. Applications Paint s, ink s, adhesive s, plastic s, coating s, toner s, defoamer s, silicone rubber , silicone sealant s, cosmetics , agriculture , fire extinguisher s, food s, polyester resin s, cable gel s, grease lubricant greases , etc. References reflist Glass material stub Category Glass types Category Thickening agents ... more details
Hydrophobic collapse is a hypothesized event that occurs during the protein folding folding process of globular protein s, suggested on the basis of the observation that proteins native state s often contain a hydrophobic core of nonpolar amino acid side chain s interspersed with charged side chains that are neutralized by salt bridge s in the protein s interior, leaving most of the polar or charged residues on the solvent exposed protein surface. The energetic stabilization conferred on the protein by the sequestration of the hydrophobic side chains from the surrounding water is thought to stabilize folding intermediates. The hypothesis generally posits that hydrophobic collapse is relatively early event in the folding pathway, occurring before the formation of many secondary structure s and native contact s present in the fully folded tertiary structure . The collapsed intermediate is also referred to as a molten globule and corresponds to a partially folded state whose energy is lower than that of the denaturation biochemistry denatured state but higher than that of the native state that is, within the energy well of the folding funnel but not yet close to the energy minimum. Partial hydrophobic collapse is an experimentally accepted model for the folding kinetics of many globular proteins, such as myoglobin , ref Gilmanshin R, Dyer RB, Callender RH. 1997 . Structural heterogeneity of the various forms of apomyoglobin implications for protein folding. Protein Science 6 10 2134 42. ref alpha lactalbumin , ref Arai M, Kuwajima K. 1996 . Rapid formation of a molten globule intermediate ... MC, Udgaonkar JB. 1995 . Initial hydrophobic collapse in the folding of barstar. Nature 377 6551 ... events is difficult to obtain, hydrophobic collapse is often studied in silico via molecular dynamics ... Chem 111 2 159 71. ref ref Brylinski M, Konieczny L, Roterman I. 2006 . Hydrophobic collapse in in silico ... by hydrophobic collapse are particularly amenable to complementary computational and experimental ... more details
Summary Epicuticular wax crystals make a Hosta leaf surface hydrophobic. Water, prevented from wetting the cuticle, beads up and runs off, carrying dust and other contamination with it. Licensing self GFDL cc by 2.5 migration relicense ... more details
Distinguish Affect disambiguation wiktionary effectEffect may refer to A result or change of something List of effects Cause and effect, an idiom describing causality In pharmacy and pharmacology Drug effect , a change resulting from the administration of a drug Therapeutic effect , a beneficial change in medical condition, often caused by a drug Adverse effect or side effect, an unwanted change in medical condition caused by a drug Dose response effect, the relationship between a drug dose and its effect, plotted on a dose response curve In media Special effect , an artificial illusion Sound effect , an artificially created or enhanced sound Effects unit , a device used to manipulate electronic sound Effects pedal , a small device attached to an instrument to modify its sound Visual effects , artificially created or enhanced images Miscellaneous Effects, ones personal property or belongings Effect size , a measure of the strength of a relationship between two variables See also lookfrom intitle Affect disambiguation Effectiveness disambiguation Efficacy Pragmatism , the philosophy of causes and effects disambig cs Efekt da Effekt de Effekt es Causalidad fr Causalit id Efek nl Effect pl Efekt ru sk Efekt th uk ... more details
Orphan date February 2009 Primarysources date June 2008 Image T Effect 574.jpg thumb Summer 2006 promo .... deletable image caption T Effect is a rapper , singer , record producer , DJ and dancer . ref http ... in front of a sold out capacity crowd at the Nippon Budokan . Since then T Effect has performed all .... Growing up a military brat T Effect eventually ended up living on an army base in Japan for a few years with his family. This twist of fate was the unforeseen door that would ultimately lead T Effect ... rapper to Rapping rap on a Techno track for a compilation CD. A friend from the TV show that T Effect use to appear on approached T Effect telling him about the opportunity to go to a Sony recording studio and be featured on a track. Even though T Effect was an Rhythm and blues R&B Hip hop music ... it a try. Long story short he blew the A&R guys away and the rest as they say is history. T Effect ... creative differences would lead to the group s members T Effect, Christina, and Rika wanting to pursue other ventures. After the groups demise, T Effect launched his solo career. His first hit ... a talented recording artist , T Effect has also modeled in print, television and Runway fashion Catwalk ... the official face for Casios popular keyboard the Rapman. T Effect was also a professional hip .... T Effect has been blessed with multiple talents organs including being a naturally strong actor ... commercials to dramas. T Effect was also a radio personality with his own radio shows including his popular 3 hour radio show called Night in Motion which showcased his DJ and emcee skills. T Effect s talents ... chan just to name a few. T Effect s explosive power made Raveman shows a memorable and very moving experience. T Effect, who has also been a talented DJ since the age of 12, not only composes, writes ... service church and directing the youth choir, T Effect was the church pianist and played the drum s as well. T Effect discovered his passion for music and all things entertainment at a very young ... more details
The hydrophobic polar protein folding model is a highly simplified model for examining protein folding protein folds in space. First proposed by Dill in 1985, it is motivated by the observation that hydrophobic interactions between amino acid residues are the driving force for proteins folding into their native state . ref name dill1985 cite journal author Dill K.A. title Theory for the folding and stability of globular proteins journal Biochemistry volume 24 issue 6 year 1985 doi 10.1021 bi00327a032 pages 1501 9 pmid 3986190 ref All amino acid types are classified as either hydrophobic H or Chemical polarity polar P , and the folding of a protein sequence is defined as a self avoiding walk in a 2D or 3D lattice group lattice . The HP model imitates the hydrophobiceffect by assigning a negative favorable weight to interactions between adjacent, non covalently bound H residues. Proteins that have minimum energy are assumed to be in their native state. The HP model can be expressed in both two and three dimensions, generally with square lattice s, although triangular lattices have been used as well. Randomized search algorithms are often used to tackle the HP folding problem. This includes stochastic , evolutionary algorithm s like the Monte Carlo method , genetic algorithms , and ant colony optimization . While no method has been able to calculate the experimentally determined minimum energetic state for long protein sequences, the most advanced methods today are able to come close. ref name bui2005 cite journal author Bui T.N., Sundarraj G. title An efficient genetic algorithm for predicting protein tertiary structures in the 2D HP model journal Gecco 05 year 2005 doi 10.1145 1068009.1068072 pages 385 ref ref name shmygelska2003 cite journal author Shmygelska A., Hoos H.H. title An improved ant colony optimisation algorithm for the 2D HP protein folding problem journal Proc. of the 16th Canadian Conference on Artificial Intelligence AI 2003 volume 2671 pages 400 417 ... more details
The Vroman effect , named after Leo Vroman , is exhibited by protein adsorption to a surface by blood plasma blood serum proteins. The highest mobility proteins arrive first and are later replaced by less motile proteins that have a higher affinity for the surface. A typical example of this occurs when fibrin adheres to a biopolymer surface and is later replaced by other proteins. This results in a depletion overall of blood serum levels of fibrinogen . References Cite journal last Vroman first L. date November 3, 1962 title Effect of Adsorbed Proteins on the Wettability of Hydrophilic and Hydrophobic Solids journal Nature issue 196 pages 476 477 doi 10.1038 196476a0 url http www.nature.com nature journal v196 n4853 pdf 196476a0.pdf format PDF volume 196 Molecular cell biology stub Category Surface chemistry Category Blood de Vroman Effekt nl Vroman effect ... more details
leaf. File Lotus3.jpg thumb 210px Computer graphic of lotus leaf surface. File Lotus effect on leaf of taro and leaf magnify.jpg thumb 210px Water droplets on taro leaf with lotus effect upper , and taro ... effect refers to the very high water repellency superhydrophobic ity exhibited by the leaves ... micro and nanoscopic architecture of the surface, which minimizes adhesion. This effect can easily ... of certain insects. The phenomenon was first studied by Dettre and Johnson in 1964 using rough hydrophobic ... hydrophobic coating and process for manufacturing same US patent 5853894 , Issued December 29, 1998 ... 1.1895487 ref ref name Narhe2006 cite journal title Water condensation on a super hydrophobic spike ... synthesis of the Lotus effect author Lai, S.C.S. url http home.wanadoo.nl scslai lotus.pdf ... name Baeyer2000 cite journal author von Baeyer, H. C. year 2000 title The Lotus Effect journal The Sciences volume 40 pages 12 15 ref The cause of self cleaning properties is the hydrophobic water repellent ... coauthors Neinhuis, C. year 2001 title The lotus effect nature s model for self cleaning surfaces ... on which the so called epicuticular waxes are imposed. These superimposed waxes are hydrophobic and form ... angle 90 are referred to as hydrophilic and those with an angle 90 as hydrophobic. Some plants show contact angles up to 160 and are called super hydrophobic meaning that only 2 3 of a drop ... effect. Dirt particles with an extremely reduced contact area are picked up by water droplets and are thus ... between the particle and the surface. As this self cleaning effect is based on the high surface tension of water it does not work with organic solvents. Therefore, the lotus effect is no protection against graffiti. This effect is of a great importance for plants as a protection against pathogens ... to cleanse all their body parts. Another positive effect of self cleaning is the prevention of contamination ... on structured surfaces or with compositions containing micro scale particulates. Super hydrophobic ... more details
Image Yeni Raki.jpg thumb The ouzo effect, here after the dilution of Turkish Raki alcoholic beverage raki . The ouzo effect also louche effect and spontaneous emulsification is a phenomenon observed when water is added to ouzo and other Category Anise liqueurs and spirits anise flavored liqueurs and spirits , such as pastis , Raki alcoholic beverage raki , Arak distilled beverage arak and absinthe , forming a milky wikt louche French louche oil in water microemulsion . Because such microemulsions occur with only minimal mixing and are highly stable, ref name Sitnikova 2005 the ouzo effect may have commercial applications. Observation and explanation The ouzo effect occurs when a strongly hydrophobic essential oil of anethole trans anethole is dissolved in a water Miscibility miscible solvent , such as ethanol , and the concentration of ethanol is lowered by addition of small amounts of water. In water immiscible solvents, oil in water emulsion s are not stable as the oil droplets Coalescence chemistry coalesce until complete phase separation is achieved at macroscopic levels. It is well known that the addition of a small amount of surfactant or the application of high shear rate s strong stirring can stabilize the oil droplets. In a water rich ouzo mixture the droplet coalescence is dramatically slowed without mechanical agitation, dispersing agents, or surfactants. It forms a stable homogeneous fluid Dispersion materials science dispersion by liquid liquid nucleation . ref cite ... Dispersions Formed by Homogeneous Liquid Liquid Nucleation The Ouzo Effect journal Langmuir volume ... that are required to be stable over a long period of time. The Ouzo effect is seen as a potential ... and Nanocapsules Created Using the Ouzo Effect Spontaneous Emulsification as an Alternative ... of the ouzo effect. clarification needed sentence needs work date March 2011 See also Interface and colloid ... of liqueurs Spinodal References reflist External links commonscat inline Ouzo effect Category ... more details
Projection effect may refer to Front projection effect , in camera visual effect Rear projection effect , in camera visual effect Insolation Projection effect , the amount of sunlight onto a portion of the Earth relative to its tilt See also Projection disambiguation Effect disambiguation dab ... more details
Expectancy effect may refer to Observer expectancy effect Subject expectancy effect disambig Long comment to avoid being listed on short pages ... more details
A digital effect may refer to A visual effect , created for visual medium such as television or film A sound effect , created digitally to alter existing sounds disambig ... more details
Proximity effect may refer to Proximity effect atomic physics Proximity effect audio , an increase in bass or low frequency response when a sound source is close to a microphone Proximity Effect comic Proximity Effect comic , a comic book series written by Scott Tucker and Aron Coleite Proximity effect electromagnetism Proximity effect electron beam lithography , a phenomenon in electron beam lithography EBL Proximity effect superconductivity , a term used in the field of superconductivity The Proximity Effect , a 1998 album by the band Nada Surf disambig ... more details
Cause and effect also written as cause effect or cause effect refers to the philosophical concept of causality , in which an action or event will produce a certain response to the action in the form of another event. For the statistical concept and test, see Granger cause . For the graphical method in quality control engineering, see Ishikawa diagram . The phrase may also refer to TV Cause and Effect Star Trek The Next Generation Cause and Effect Star Trek The Next Generation , a fifth season episode of Star Trek The Next Generation Cause and Effect Numb3rs Cause and Effect Numb3rs , the season finale of the sixth season of the American television show Numb3rs Music Cause and Effect band , an American electronica synthpop band Cause and Effect Maria Mena album Cause and Effect Maria Mena album Cause and Effect Human Drama album Cause and Effect Digital Summer album Cause & Effect Cause and Effect album disambig ... more details
Dormitory effect may refer to Dormitory Effect band , an all female Hard Rock Metal band. McClintock effect , the synchronization of menstrual cycles amongst women who live together. disambig ... more details
The Mach Effect can refer to one of the following two things Mach bands are an optical illusion that are often referred to also as the mach effect . The Woodward effect is a purported physics related propulsion phenomenon , also commonly referred to also as the mach effect . disambig ... more details
for polar effect in genetics polar effect genetics The Polar effect or electronic effect in chemistry is the effect exerted by a substituent on modifying electrostatic force s operating on a nearby chemical reaction reaction center. The main contributors to the polar effect are the inductive effect , mesomeric effect and the through space electronic substituent field effect field effect . An electron withdrawing group or EWG draws electrons away from a reaction center. When this center is an electron rich carbanion or an alkoxide anion with the presence of the substituent that has a stabilizing effect. Examples of electron withdrawing groups are halogen s F, Cl nitrile s CN carbonyl s CO Nitro compound nitro groups NO2. An electron releasing group or ERG otherwise called electron donating groups or EDG releases electrons into a reaction center and as such stabilizes electron deficient carbocation s. Examples of electron releasing groups are alkyl groups alcohol groups amine amino groups. The total substituent effect is the combination of the polar effect and the combined steric effect s. In electrophilic aromatic substitution and nucleophilic aromatic substitution substituents are divided into activating group s and deactivating group s where the direction of activation or deactivation is also taken into account. External links Polar effect definition by the IUPAC Gold Book http www.iupac.org goldbook P04709.pdf Link Category Physical organic chemistry nl Polarisatie effect ja pt Efeito polar ... more details
Wiktionary Observer effect may refer to Observer effect information technology , the impact of observing a process while it is running Observer effect physics , the impact of observing a physical system Observer expectancy effect of psychology, how people change their behavior when aware of being watched It may also refer to Observer Effect , an episode of Star Trek Enterprise , named after this effect It is sometimes conflated with Heisenberg s uncertainty principle Actor observer bias See also Schr dinger s cat , a thought experiment, often described as a paradox, devised by Austrian physicist Erwin Schr dinger Hawthorne effect Disambig ... more details
The Dufour effect is the energy flux due to a mass concentration gradient occurring as a coupled effect of irreversible processes. It is the reciprocal phenomenen to the Soret effect . ref http www.pnas.org content 77 4 1728.full.pdf ref References references Category Thermodynamics physics stub ... more details
Unreferenced date December 2009 Orphan date December 2009 The ramp effect or ramping effect is a phenomenon involved in drug addiction whereby an addict develops a resistance to a substance, and thus requires increasingly large quantities of that substance to achieve the same effect. This can lead the addict to exponential growth rapidly increase their dosages, which can lead to a variety of health maladies. After the ramp effect has begun, it may be very difficult to deprive an addict of their substance, or even to reduce the dosage. Much of drug rehabilitation consists of resisting and reversing the ramping effect. See also Drug tolerance DEFAULTSORT Ramp Effect Category Drug addiction Category Drug rehabilitation ... more details
An ionotropic effect is a special kind of effect of a hormone on its target. The hormone activates or deactivates ionotropic receptor s ligand gated ion channels . The effect can be either positive or negative, whether the effect is a depolarization or a hyperpolarization respectively. Examples Noradrenaline aka. Norepinephrine has a positive ionotropic effect on heart muscle , when binding to beta 1 adrenergic receptor s on this tissue. ref name purves Neuroscience Purves , Third Edition, table 20 2 ref The result is an increased cardiac output . References references DEFAULTSORT Ionotropic Effect Category Membrane biology Category Electrophysiology Category Neurochemistry Category Molecular neuroscience ... more details
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