The Magnitude of the K-Absorption Discontinuity

Richtmyer, F. K.

doi:10.1103/physrev.27.1

Cited by 32 publications

(8 citation statements)

References 8 publications

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“…[4][5][6] It has previously been reported that this protection reaction has been achieved through one-step processes. However, these transformations require high temperature, [7] extended reaction times, [8][9][10][11][12][13][14][15] metal catalysts [16][17][18][19][20][21][22][23][24][25][26][27] or stoichiometric catalysis. [28] Recently, the organocatalytic synthesis of 4,6-benzylidene glycosides from aromatic aldehydes in one step under mild conditions was reported by Schmidt and co-workers.…”

Section: Introductionmentioning

confidence: 99%

Mild One‐Step Synthesis of 4,6‐Benzylideneglycopyranosides from Aromatic Aldehydes and Gelation Abilities of the Glucose Derivatives

et al. 2015

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We report herein an efficient one‐step synthesis of 4,6‐benzylidene glycoside derivatives from aromatic aldehydes bearing electron‐donating or ‐withdrawing groups as well as polymerisable monomer groups. Glucose, mannose and galactose derivatives could also be used successfully. Several of the glucose derivatives thus obtained acted as gelators for various solvents, including water. 4‐(n‐Butoxybenzylidene)glucose derivative 3a produced both a clear squalane gel and a hydrogel at 0.1 wt.‐%. Furthermore, 3‐(n‐butoxybenzylidene)glucose derivative 3i produced a clear organogel and an opaque hydrogel. The critical gelation concentration (CGC) of 3i in squalane was determined to be 0.02 wt.‐%, which is one of the lowest CGC values reported so far. The organogels, hydrogels and aqueous solution gels produced from 3a and 3d exhibited thixotropy. The strength and thixotropy of the organo‐ and hydrogel produced from 3a were estimated by a rheometer. The gel morphologies were observed by field‐emission and wet‐scanning electron microscopy, and the self‐assembly modes were analysed by XRD. We have concluded that super‐gelators can be created by this method.

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Section: Introductionmentioning

confidence: 99%

Mild One‐Step Synthesis of 4,6‐Benzylideneglycopyranosides from Aromatic Aldehydes and Gelation Abilities of the Glucose Derivatives

et al. 2015

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“…I n this way it was found (e.g. Richtmeyer 1926, Walter 1927 thatf, for absorption from the K shell for several elements was about as given in table 7. One notes Wolf (1933) also estimated some x-ray line oscillator strengths usingf-sum rule considerations.…”

Section: Kdv Ne2 P N " K L Edgementioning

confidence: 71%

The measurement of oscillator strengths in atomic spectra

Foster¹

1964

Rep. Prog. Phys.

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T h e report is primarily concerned with methods of measurement. Formulae relating radiation intensities and radiation constants-transition probabilities, lifetimes and oscillator strengths-are set out in a simple way to co-ordinate the discussion. Examples are selected to illustrate the more important methods recently used for measurement of radiation constants for discrete and continuous spectra. Interesting reduction procedures are sketched out. A few tables illustrate the consistency of the results obtained by the application of different methods to measure the same constant. Bibliographies, etc. referred to would enable the tracing of most of the currently available numerical data in specific cases.

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“…Several models can be used to estimate dielectric properties if the structure is known in advance, such as the core-shell 28 or brick layer 29 model. If the composite's structure remains uncertain, a broader model known as the Lichtenecker model 30,31 can be employed. This model relies on a parameter b to describe the structure of the system, which can be determined using several different compositions with the same structure:…”

Section: Dielectric Characteristics At Room Temperaturementioning

confidence: 99%