CLIII.—The disulphonation of m-dichlorobenzene and of s-trichlorobenzene

Davies, W.; Poole, H. G.

doi:10.1039/jr9270001122

Cited by 67 publications

(102 citation statements)

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“…Mammalian cells are well endowed with antioxidant defense systems, nevertheless a fraction of these oxidants are not captured by defense mechanisms and are able to damage cellular structures. Oxidation of amino acids is a random process that occurs concurrently with lipid and nucleic acid oxidation [1][2][3].…”

Section: Role Of Removal Of Oxidatively Damaged Proteins In Antioxidamentioning

confidence: 99%

“…The variety of oxidation products of whole polypeptide chains is more numerous than that for free amino acids. Modifications of amino acid side chains, oxygen radical mediated cleavage of the polypeptide chain and intra-and intermolecular crosslinking of proteins have been described [1][2][3].…”

Section: Role Of Removal Of Oxidatively Damaged Proteins In Antioxidamentioning

confidence: 99%

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Breakdown of oxidized proteins as a part of secondary antioxidant defenses in mammalian cells

Grune

Davies

1997

BioFactors

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The degradation of oxidized proteins is an essential part of antioxidant defenses against free radical attack. Selective degradation of oxidatively damaged proteins allows proteolytic systems to function directly in the removal of useless cellular debris and therefore prevent the accumulation of potentially toxic fragments or large aggregates of cross-linked proteins. The degradation of oxidized proteins in dividing mammalian cells after hydrogen peroxide treatment has been demonstrated. Cells are able to increase proteolysis rates after treatment with moderate levels of oxidants. The role of proteasome in the removal of oxidized proteins has been demonstrated by treatment of cells with an anti-sense oligodesoxynucleotide to the proteasome C2 subunit gene. This treatment decreases the proteasome content of the cells and prevents increased proteolysis rates after hydrogen peroxide treatment. Thus proteasome clearly plays a role in the removal of oxidized proteins. As part of antioxidant defenses the proteasome provides a second line of defense against the numerous radicals and oxidants which contact cells during their lifetime. The degradation of oxidatively damaged proteins enables-cells to recover from a moderate oxidant attack.

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Section: Role Of Removal Of Oxidatively Damaged Proteins In Antioxidamentioning

confidence: 99%

Section: Role Of Removal Of Oxidatively Damaged Proteins In Antioxidamentioning

confidence: 99%

Breakdown of oxidized proteins as a part of secondary antioxidant defenses in mammalian cells

Grune

Davies

1997

BioFactors

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“…The hydrodynamic structure of the flow can, as a first approximation, be represented by a pistontype flow. Under these conditions, it can be easily shown from a simple steady state mass balance in a lamina of thickness dx, that the conversion factor 7, the flux of production R, the rate of production P and the limiting current density i in the cell, are given by the following expressions : (24) and…”

Section: Numerical Examplesmentioning

confidence: 99%

Energetic aspects of turbulence promotion applied to electrolysis processes

Storck

Hutin

1980

Can J Chem Eng

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This paper presents a simple and rational method for determining how much hydrodynamic factors influence the rate of production in electrochemical systems using turbulence promoters in various alternative flow conditions. Empirical and theoretical data correlations of limiting current densities (or mass transfer coefficients) and pressure drops are presented in unobstructed channels as well as for eddying flow induced by different types of eddy promoters. Based on the dimensional analysis and on the experimental results, it is shown that, within a given range of variations, all the promoters have an equivalent energetic effectiveness. However, when the conversion factor of the reacting species through the electrochemical reactor is near unity (complete transformation), this conclusion is no longer valid and the general methodology presented in this work shows that the rates of production present large differences depending on the system considered, the less sophisticated system (unobstructed channel) being the most effective.

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“…importantly, when applied correctly the pulse laser ablation can vaporize material locally; hence, it can access the imbalances of targeted parts without causing damage to nearby components of the assembly [7]. Research has shown that ablation on a range of metallic materials can be conducted with minimal/no thermal alteration of metallurgical properties of the workpiece target material [8] by operating below the damage threshold [9].…”

Section: Introductionmentioning

confidence: 99%

“…Research has shown that ablation on a range of metallic materials can be conducted with minimal/no thermal alteration of metallurgical properties of the workpiece target material [8] by operating below the damage threshold [9].…”

Section: Introductionmentioning

confidence: 99%

Pulsed laser ablation as a tool for in-situ balancing of rotating parts

2016

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The balancing of complex rotating systems is a challenging task as it may require repetitive (dis)assembly to enable mass adjustments; thus, developing methods for in-situ dynamic balancing of rotatives is regarded as a key technology enabler. In this context laser balancing with its high flexibility in adjusting its firing frequency (to match that of the rotating part) and pulse energy (to vary the material removal) could offer significant advantages from both precision and cost point of view.In this paper a laser balancing system is developed to continuously remove material from a target part in a controlled and automated manner. The amount of material ablated can be controlled by an influence coefficient which is related to the change in vibration amplitude for a predefined amount of pulses at a given operational balancing speed, material, and geometry of the rotative part. The proposed system features a three-layered case-driven programmatic approach to optimize single-plane balancing process duration in a fully automated system. This enables the use of prioritization to avoid misfire and therefore, structural damage to the targeted part. Furthermore, the application allows the component to be balanced to all common balancing grades as specified in the ISO 1940/1 standard.Thus, validation trials involved balancing an Inconel 718 rotative to a preliminarily specified balancing grade by extracting the acceleration signals using an IIR peak filter. A computer simulation encompassing the rotor bearing state space system, a model of the laser and the adapted peak detection algorithm, has been developed and used to validate the trials conducted. Henceforth, a maximum deviation from the desired correction position of less than 1 mm has been recorded. Moreover, it has been shown that the detection and correction of imbalances can be reliably achieved by reducing the vibration level of a rotor from G 22.5 to G 19.5.

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CLIII.—The disulphonation of m-dichlorobenzene and of s-trichlorobenzene

Cited by 67 publications

References 0 publications

Breakdown of oxidized proteins as a part of secondary antioxidant defenses in mammalian cells

Breakdown of oxidized proteins as a part of secondary antioxidant defenses in mammalian cells

Energetic aspects of turbulence promotion applied to electrolysis processes

Pulsed laser ablation as a tool for in-situ balancing of rotating parts

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