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  • 1
    Electronic Resource
    Electronic Resource
    The time course of phosphorylcreatine resynthesis during recovery of the quadriceps muscle in man (1976)
    Springer
    Pflügers Archiv 367 (1976), S. 137-142 
    Details
    ISSN: 1432-2013
    Keywords: Man ; Muscle ; Exercise ; Recovery ; Phosphorylcreatine ; Phosphagen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The time course of phosphorylcreatine (PC) resynthesis in the human m. quadriceps femoris was studied during recovery from exhaustive dynamic exercise and from isometric contraction sustained to fatigue. The immediate postexercise muscle PC content after either form of exercise was 15–16% of the resting muscle content. The time course of PC resynthesis during recovery was biphasic exhibiting a fast and a slow recovery component. The half-time for the fast component was 21–22 s but this accounted for a smaller fraction of the total PC restored during recovery from the isometric contraction than after the dynamic exercise. The half-time for the slow component was in each case more than 170 s. After 2 and 4 min recovery the total amounts of PC resynthesized after the isometric exercise were significantly lower than from the dynamic exercise. Occlusion of the circulation to the quadriceps completely abolished the resynthesis of PC. Restoration of resynthesis occurred only after release of occlusion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00585149
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  • 2
    Electronic Resource
    Electronic Resource
    The influence of metabolic alkalosis upon exercise metabolism in the thoroughbred horse (1991)
    Springer
    European journal of applied physiology 63 (1991), S. 129-134 
    Details
    ISSN: 1439-6327
    Keywords: Metabolic alkalosis ; Exercise ; Muscle fatigue
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Six thoroughbred horses exercised on a motorised treadmill on two separate occasions at a speed of 11 or 12 m· s−1 for up to 2 min. 4 h prior to exercise each horse was given a 21 test solution of sodium bicarbonate (NaHC03; 0.6 g·kg−1 body mass) or a control solution of water by nasogastric intubation, the order of administration of the two solutions was randomised. Blood samples (n=15) were obtained before and during the 4 h after intubation, during exercise and for 30 min after exercise. (NaHC03; ingestion resulted in changes in pre-exercise acid-base status. The changes in blood lactate and base excess with exercise were greater after (NaHC03; administration; after 1 min of exercise in the case of lactate (P〈0.05) and immediately after exercise in the case of base excess (P〈0.05). Plasma ammonia levels were lower during (P〈0.05) and immediately after (P〈0.05) exercise following (NaHC03; ingestion. The peak change in plasma ammonia with exercise was also lower after (NaHC03; ingestion (P〈0.05). Following exercise after (NaHC03; ingestion, five horses demonstrated lower muscle adenosine 5-triphosphate loss (P〈0.05) and inosine 5-monophosphate formation (P=0.05) and higher glycerol 3-phosphate formation (P〈0.05). There is evidence to suggest that metabolic alkalosis may delay the onset of fatigue by decreasing the extent of adenine nucleotide loss during high-intensity exercise.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00235182
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  • 3
    Electronic Resource
    Electronic Resource
    Silicon-29 and carbon-13 n.m.r. studies of organosilicon chemistry. VIISee Ref. 25 for Part VI and Ref. 26 for Part V. - trimethylsilylated silicates (1977)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 9 (1977), S. 426-431 
    Details
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Silicon-29 n.m.r. was used to study the products from trimethylsilylation of minerals. Chemical shifts are reported for four model compounds, viz. the monomer, dimer, linear trimer (from natrolite) and cyclic tetramer (from laumontite). Information is then obtained from the products of trimethylsilylation of the anhydrous calcium silicates wollastonite and pseudo-wollastonite. In the latter case it is shown that the principal products are the four model compounds, and percentage yields are obtained for these.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1270090712
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  • 4
    Electronic Resource
    Electronic Resource
    29Si and 13C NMR studies of organosilicon chemistry. VThe previous paper in this series is Ref. 1. - Sugar derivatives (1975)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 7 (1975), S. 635-636 
    Details
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 29Si spectra have been obtained for four trimethylsilylated hexopyranoside sugars, and the resonance due to the CH2OSiMe3 group at position 5 has been assigned by experiments involving gated decoupling at a single 1H frequency.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1270071217
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  • 5
    Electronic Resource
    Electronic Resource
    High-resolution 13C NMR studies of solid 1,4-bis(n-butylamino)anthraquinone (1984)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 22 (1984), S. 784-788 
    Details
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: High-resolution 13C NMR spectra of solid 1,4-bis(n-butylamino)anthraquinone are presented. In spectra measured at 22.6 MHz the effects of two short-range and two long-range residual (13C, 14N) dipolar couplings have been observed. Only the short-range effects are observable in the 50.3 MHz spectra. These typical asymmetric doublets allow the determination of the 14N nuclear quadrupole coupling constant (χ=e2Qq/h=-3.0 MHz), the asymmetry parameter (η=0.3) and the orientation of the electric field gradient tensor of the 14N in the molecular framework.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1270221211
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  • 6
    Electronic Resource
    Electronic Resource
    NMR spectra of 1,3-butadienes: VII - the conformation of 2,4-dimethyl-2,4-pentadiene (1974)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 6 (1974), S. 121-125 
    Details
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Proton magnetic resonance spectra of 2,4-dimethyl-2,4-pentadiene have been examined for a number of solution conditions and (for a CF2Cl2 solution) over a range of temperatures. Coupling constants for the ethylenic protons were obtained from double resonance (methyl decoupled) spectra. Further double resonance experiments established the sign of 4Jc. It is found that 4Jc = -1·20 Hz and [4Jt] = 0·18 Hz. It is concluded that the compound exists in a single nonplanar conformation with an average dihedral angle (from the s-cis form) φ = 50° ± 15°. Some long range coupling constants involving the methyl group were found to be appreciable in spite of the lack of planarity of the diene chain.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1270060214
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  • 7
    Electronic Resource
    Electronic Resource
    Peak suppression in Fourier transform n.m.r.: Application of the selective excitation technique to the problem of 13C satellites in 31P resonance (1977)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 9 (1977), S. 58-60 
    Details
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Selective pulsed excitation was used in a technique to suppress the resonance due to a per-12C-isotopomer so as to overcome dynamic range problems when observing ‘13C satellite’ lines. The technique was used to obtain nuclear spin parameters from the 13C satellites in 31P resonance for the racemic isomer of P,P′-dimethyl-P,P′-diphenyldiphosphine disulphide, [MePhP(:S)]2.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1270090113
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  • 8
    Electronic Resource
    Electronic Resource
    Nuclear magnetic resonance studies of 1,3-butadienes. IXPart VIII is Ref. 1 but was incorrectly entitled Part VII. The correct Part VII is Ref. 2. - The 1H spectra of isoprene and related compounds (1977)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 9 (1977), S. 483-488 
    Details
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Full analyses of the five-spin 1H n.m.r. spectra for the diene protons of isoprene, ethylbutadiene and β-myrcene under conditions of decoupling the sidechain α-protons are reported. The data are discussed in terms of spin-spin coupling mechanism and molecular conformation. The fully-coupled spectra of the compounds were also examined and coupling information obtained.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1270090808
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  • 9
    Electronic Resource
    Electronic Resource
    J. W. Emsley, L. Phillips and V. Wray. Fluorine coupling constants. Pergamon Press (Oxford), 1977. 672 pages. $75.00. £37·50 (1978)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 11 (1978), S. iii 
    Details
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1270110411
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  • 10
    Electronic Resource
    Electronic Resource
    NMR studies of complex formation between N-methyl morpholine and sulphur dioxide (1969)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 1 (1969), S. 329-335 
    Details
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Proton magnetic resonance spectra of methylene dichloride solutions containing N-methyl morpholine and sulphur dioxide have been studied as a function of temperature. Complex formation reduces the rate of interchange of magnetic sites via inversion at nitrogen but increases the rate of ring inversion. The conformational preference of the complex is discussed. It is suggested that interaction with SO2 may be a useful general method of studying nitrogen inversion.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1270010407
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