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Showing 1 to 20 of 103 for “"Negative charge"”.
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Motion of charged particles in pulsar magnetospheres
The motion of charges in the magnetosphere of pulsars is studied from two complementary points of view: (i) For the case of aligned magnetic and rotational axes we solve a fluid version of the Lorentz-Dirac equation, in the Landau approximation, for a two-component plasma. We start from an …
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Studies of Huntington's disease associated motor domain phosphorylation of kinesin-1
… Huntington’s disease. Phosphorylation adds both negative charge and bulk to a protein. The mechanism by which S175 modification is related to impaired transport is not very well understood. It is not known whether phosphorylation of kinesin alone is sufficient to cause impaired cargo transport. …
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Synthetic and Mechanistic Investigation of Alpha-Amido Carbanions
… a carbonyl moiety to aid in the stabilization of negative charge adjacent to nitrogen. The syntheses of ten different N,N-dialkyl amide systems are reported, five of which have been successfully substituted via an (alpha)-amido carbanionic intermediate.
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THUNDERCLOUD ELECTRIC FIELD SOUNDINGS WITH INSTRUMENTED FREE BALLOONS
… rose through an 800m thick region of positive charge in the lower portion of the cloud. Above this, negative charge extended from 5200m to 8200m (msl). We imputed intense horizontal electric field components to a volume of negative charge, situated near 6700m (msl) in a region where the …
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The Effect of Using Bioflocculants as Conditioners on Dewatering of Biosludge
… the dewaterability of sludge by neutralizing the negative charge of the biosludge particles. Biopolymers such as hemoglobin and lignin do not possess high charge density naturally. As a result, they only exhibit a positive effect on dewaterability after modification through different processes. …
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Studies of Coagulation and Fibrinolysis
… bovine, suggesting that with bovine FVa, the net negative charge of the ten residues augments the negative charge of DSDYQ, thus facilitating the FVa-prethrombin-1 interaction required for Arg320 cleavage. Third, the kinetics of activated protein C (aPC)-mediated inactivation of FVa in real-time, …
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Modeling Nanofiltration Separation Mechanisms in Covalent Organic Framework Membranes
… Exclusion (DSPM-DE), which couples size- and charge-based solute partitioning mechanisms into and out of membrane pores with flow through pores, as described by the Extended Nernst-Planck equation. If membrane structural and chemical characteristics are well defined, the DSPM-DE can …
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Molecular Modulation of a-Subunit VISIT-DG Sequence Residue Asp-350 in the Catalytic sites of <em>Escherichia coli</em> ATP Synthase.
… and αAsp-350 has been chosen because of its negative charge side chain and its close proximity (~2.8 Å) to the known phosphate binding residue αArg-376. The mutant's αD350R, αD350Q, αD350A, αR376A/D, and αG351R/A/D were generated by site directed mutagenesis and several biochemical assays …
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Density functional theory study of the conductivity of the biphenalenyl radical dimer
… the ground state energy, HOMO-LUMO gap, charge localization, and reorganization energies, as these are the main contributing factors to crystal conduction. We find that there is only a slight difference between the singlet state and triplet state HOMO-LUMO gaps. In addition, the negative …
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Electric charge within volcanic plumes on Earth and Io
… during one small Vulcanian eruption suggest that charges, about 1 C in magnitude, were generated and then separated, with the positive charge centre residing above the negative charge centre. Experiments have been carried out in order to assess fracto-emission (the release of ions, neutral atoms …
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Synthesis and characterization of ionic liquid electrolytes for use in electrical energy storage devices at elevated temperatures
… identity of the cation was altered, an electronegative moiety was included, the alkyl chain lengths were varied, or different anionic components were utilized. It was found that a small anion with a delocalized negative charge when paired with an asymmetric cation generally produced a RTIL with …
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Transport of Antibodies and Nanoparticles across An in vitro Blood-Brain Barrier
… BBB permeability to much larger NPs without charge, which was measured in this study and that to NPs with charge, which was measured in Yuan et al (2010), we developed a new transcellular transport model, which incorporates the charge at the surface glycocalyx of the bEnd3 monolayer, the …
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Musical improvisation as the place where being speaks : Heidegger, language and sources of Christian hope
… discussed in the West will be shown to carry a negative charge (Chapter 3). Among various philosophies of music in the Western tradition, none appears to have foregrounded improvisatory music specifically. However Heidegger's philosophy, it will be suggested, harbours inner trends which favour …
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Extrusion performance and physicochemical characterization of texturized native and chemically modified whey proteins in carbohydrate-containing systems
… role in texture formation. An increase in the negative charge of the protein seemed to favor the texturization of whey proteins.
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Surface chemical aspects of microbubble flotation
… has been studied. In general, oil droplets are negatively charged and negative zeta potential is reduced with the addition of nonionic and cationic surfactants. On the other hand, the negative charge is increased with the addition of an anionic reagent. It has also been shown that the negative …
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Measurement of single-top T-channel production using ATLAS data
… are σ t+ = 59 +18 -16 pb for the positive charge channel and σ t- = 33 +13 -12 pb for the negative charge channel. The total measured single-top t-channel cross-section using all kinematic channels in this analysis is 92 +29 -26 pb with an expected cross-section of σ t = 65 +22 …
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Behavioral Adaptation in Bacillus Subtilis: The Role of Selective Methylation Changes and Heterologous Receptors in Mcpb-Mediated Signaling
… of mcpB. These aspartate substitutions ensure a negative charge at the altered sites. This analysis revealed the following: (1) only migration toward high concentrations of asparagine was impaired; (2) the presence of all heterologous receptors fully compensated for this defect; (3) methyl-group …
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Theoretical and experimental studies of slowly deacylating alpha-chymotrypsin acyl enzymes
… enzyme by providing little stabilization of the negative charge that develops during the rate determining process of tetrahedral intermediate formation. This is in contrast to the results for the relatively quickly deacylating acyl enzyme 14, which has a ketone carbonyl hydrogen bonded to the …
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Numerical Modeling Of Lightning Initiation And Stepped Leader Propagation
… factors, current propagation speed, and the IBP charge moment change. Ranges and mean values of physical quantities found are: current risetime [4.8–25, (13±6)] microseconds, current falltime [15–37, (25±6)] microseconds, current speed [0.78–1.8, (1.3±0.3)]×10 8 m/s (excluding one extreme case of …
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UNIQUE ALLOSTERIC MECHANISM REGULATING PROTEIN-PROTEIN INTERACTION THROUGH PHOSPHORYLATION: A CASE STUDY OF THE CONFORMATIONAL CHANGES IN THE SYK TANDEM SH2 PROTEIN
… Phosphorylation at Y130, which introduces a negative charge in the linker A, disrupts the domain-domain coupling and causes the binding affinity of each SH2 domain to the pTyr of the dpITAM to differ; the optimal binding to dpITAM seen with the unphosphorylated form is therefore no longer …
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