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  • 1
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    Progress in Combustion Diagnostics, Science and Technology (2021)
    MDPI - Multidisciplinary Digital Publishing Institute
    Details
    Publication Date: 2024-04-11
    Description: The role that combustion plays in the world’s energy systems will continue to evolve with the changes in technological demands. For example, the challenges that we face today are more focused on the conservation of energy and addressing environmental concerns, which together necessitate cleaner and more efficient combustion processes using a range of fuel sources. This book includes contributions to highlight the recent progress in theory and experiments, development, and demonstration of technologies and systems involving combustion processes, for the production, storage, use, and conservation of energy.
    Keywords: TA1-2040 ; T1-995 ; steam ejector ; vortex ; detonation combustion ; engine valve system control ; canola oil (Co) ; eddy-generation mechanism ; critical back pressure ; hydrogen ; internal combustion engine ; combustion modelling ; frequency ; stationary wavelet packet transform ; numerical investigations ; gasoline engine ; experiment ; flame length ; vehicle dynamic model ; micro-scale combustion ; operating parameter ; high pressure gas jet ; entrainment ratio ; hot jet detonation initiation technique ; Mahalanobis distance ; tunable diode laser absorption tomography ; diffusion flames ; flame acceleration ; wet steam model ; computational fluid dynamics ; biofuel ; NOx emission index ; micro power generation ; acoustic ; gasoline vehicles ; turbulence ; CO2 emission ; fire suppression system ; shock wave ; engine valve systems ; combustion ; driving cycles ; diesel fuel (Df) ; fire whirl ; dual-fuel engine ; combustion optimization ; CI engine ; electric vehicles ; flow structure ; PPCI diesel engine ; ignition position ; exhaust gas ; alternative fuel ; fuel injector ; large eddy simulation ; pilot injection ; flame-front ; similarity analysis ; fuel combustion ; jet penetration ; temperature ; combustion waste heat ; pumping performance ; compression ignition ; planer laser tomography ; n-hexane ; condensation effect ; root mean square error ; High speed PIV ; diesel engine ; common rail ; detailed chemistry ; stationary wavelet transform ; shock-mixing layer ; flame propagation ; continuously variable valve systems ; flow-field ; direct injection ; combustion noise ; injection ; global residence time ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: English
    Format: application/octet-stream
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    E-BOOK
  • 2
    Electronic Resource
    Electronic Resource
    ENDOR and Special TRIPLE Resonance Spectroscopy of QA.bul.- of Photosystem 2 (1995)
    s.l. : American Chemical Society
    Biochemistry 34 (1995), S. 12075-12081 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00037a051
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  • 3
    Electronic Resource
    Electronic Resource
    Synthesis and Antitumor Activity of Novel Water Soluble Derivatives of Camptothecin as Specific Inhibitors of Topoisomerase I (1995)
    s.l. : American Chemical Society
    Journal of medicinal chemistry 38 (1995), S. 395-401 
    Details
    ISSN: 1520-4804
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jm00003a001
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  • 4
    Electronic Resource
    Electronic Resource
    Magnetoklimatologie: Mineralmagnetismus und Eiszeiten (1996)
    Springer
    Naturwissenschaften 83 (1996), S. 97-102 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01142173
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  • 5
    Electronic Resource
    Electronic Resource
    Magnetoklimatologie: Mineralmagnetismus und Eiszeiten (1996)
    Springer
    Naturwissenschaften 83 (1996), S. 97-102 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Notes: 10 Be concentration. This pedogenic component closely parallels paleorainfall, so that regional precipitation history during the Quaternary can be derived.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01142173
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  • 6
    Electronic Resource
    Electronic Resource
    Cellular specificity of the gravitropic motor response in roots (1997)
    Springer
    Planta 203 (1997), S. S115 
    Details
    ISSN: 1432-2048
    Keywords: Key words:Arabidopsis ; Auxin ; Calcium ; Distal elongation zone ; Gravitropism (root) ; Zea
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. A number of features of the gravitropic response of roots are not readily accounted for by the classical Cholodny-Went theory. These include the observations that (i) in the later stages of the response the growth gradient is reversed with no evident reversal of the auxin gradient; (ii) a major component of the acceleration of growth along the upper side occurs in the distal elongation zone (DEZ), a group of cells located between the meristem and the main elongation, not within the central elongation zone; and (iii) the initiation of differential growth in the DEZ appears to be independent of the establishment of auxin asymmetry. Alternative candidates for mediation of differential growth in the DEZ include calcium ions and protons. Gravi-induced curvature is accompanied by polar movement of calcium toward the lower side of the maize root tip and the DEZ is shown to be particularly sensitive to growth inhibition by calcium. Also, gravistimulation of maize roots causes enhanced acid efflux from the upper side of the DEZ. Evidence for gravi-induced modification of ion movements in the root tip includes changes in intracellular potentials and current flow. It is clear that there is more than one motor region in the root with regard to gravitropic responses and there is evidence that the DEZ itself consists of more than one class of responding cells. In order to gain a more complete understanding of the mechanism of gravitropic curvature, the physiological properties of the sub-zones of the root apex need to be thoroughly characterized with regard to their sensitivity to hormones, calcium, acid pH and electrical perturbations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00008099
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  • 7
    Electronic Resource
    Electronic Resource
    Analysis of changes in relative elemental growth rate patterns in the elongation zone of Arabidopsis roots upon gravistimulation (1998)
    Springer
    Planta 206 (1998), S. 598-603 
    Details
    ISSN: 1432-2048
    Keywords: Key words:Arabidopsis (gravitropism ; root growth)  ;  Distal elongation zone  ;  Gravitropism  ;  Growth profiles  ;  Relative elemental growth rate  ;  Root growth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. Although Arabidopsis is an important system for studying root physiology, the localized growth patterns of its roots have not been well defined, particularly during tropic responses. In order to characterize growth rate profiles along the apex of primary roots of Arabidopsis thaliana (L.) Heynh (ecotype Columbia) we applied small charcoal particles to the root surface and analyzed their displacement during growth using an automated video digitizer system with custom software for tracking the markers. When growing vertically, the maximum elongation rate occurred 481 ± 50 μm back from the extreme tip of the root (tip of root cap), and the elongation zone extended back to 912 ± 137 μm. The distal elongation zone (DEZ) has previously been described as the apical region of the elongation zone in which the relative elemental growth rate (REGR) is ≤30% of the peak rate in the central elongation zone. By this definition, our data indicate that the basal limit of the DEZ was located 248 ± 30 μm from the root tip. However, after gravistimulation, the growth patterns of the root changed. Within the first hour of graviresponse, the basal limit of the DEZ and the position of peak REGR shifted apically on the upper flank of the root. This was due to a combination of increased growth in the DEZ and growth inhibition in the central elongation zone. On the lower flank, the basal limit of the DEZ shifted basipetally as the REGR decreased. These factors set up the gradient of growth rate across the root, which drives curvature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004250050437
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  • 8
    Electronic Resource
    Electronic Resource
    Inhibition of Root Elongation in Microgravity by an Applied Electric Field (1999)
    Springer
    Journal of plant research 112 (1999), S. 493-496 
    Details
    ISSN: 1618-0860
    Keywords: Keywords: Electric field, Growth, Microgravity, Root, Vigna
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00013905
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  • 9
    Electronic Resource
    Electronic Resource
    Comparative EPR and thermoluminescence study of anoxic photoinhibition in Photosystem II particles (1995)
    Springer
    Photosynthesis research 46 (1995), S. 213-218 
    Details
    ISSN: 1573-5079
    Keywords: Photoinhibition ; Photosystem II ; quinone-iron complex ; electron paramagnetic resonance (EPR) ; thermoluminescence (TL)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Photosystem II particles were exposed to 800 W m−2 white light at 20 °C under anoxic conditions. The Fo level of fluorescence was considerably enhanced indicating formation of stable-reduced forms of the primary quinone electron acceptor, QA. The Fm level of fluorescence declined only a little. The g=1.9 and g=1.82 EPR forms characteristic of the bicarbonate-bound and bicarbonate-depleted semiquinone-iron complex, QA −Fe2+, respectively, exhibited differential sensitivity against photoinhibition. The large g=1.9 signal was rapidly diminished but the small g=1.82 signal decreased more slowly. The S2-state multiline signal, the oxygen evolution and photooxidation of the high potential form of cytochrome b-559 were inhibited approximately with the same kinetics as the g=1.9 signal. The low potential form of oxidized cytochrome b-559 and Signal IIslow arising from TyrD + decreased considerably slower than the g=1.9 semiquinone-iron signal. The high potential form of oxidized cytochrome b-559 was diminished faster than the low potential form. Photoinhibition of the g=1.9 and g=1.82 forms of QA was accompanied with the appearance and gradual saturation of the spin-polarized triplet signal of P 680. The amplitude of the radical signal from photoreducible pheophytin remained constant during the 3 hour illumination period. In the thermoluminescence glow curves of particles the Q band (S2QA − charge recombination) was almost completely abolished. To the contrary, the C band (TyrD +QA − charge recombination) increased a little upon illumination. The EPR and thermoluminescence observations suggest that the Photosystem II reaction centers can be classified into two groups with different susceptibility against photoinhibition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00020433
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  • 10
    Electronic Resource
    Electronic Resource
    Analysis of the proposed Fe-SX binding region of Photosystem 1 by site directed mutation of PsaA in Chlamydomonas reinhardtii (1995)
    Springer
    Photosynthesis research 46 (1995), S. 257-264 
    Details
    ISSN: 1573-5079
    Keywords: Chlamydomonas ; mutation ; photosynthesis ; Photosystem 1 ; PsaA ; reaction center
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The psaA and psaB genes of the chloroplast genome in oxygenic photosynthetic organisms code for the major peptides of the Photosystem 1 reaction center. A heterodimer of the two polypeptides PsaA and PsaB is thought to bind the reaction center chlorophyll, P700, and the early electron acceptors A0, A1 and Fe-SX. Fe-SX is a 4Fe4S center requiring 4 cysteine residues as ligands from the protein. As PsaA and PsaB have only three and two conserved cysteine residues respectively, it has been proposed by several groups that Fe-SX is an unusual inter-peptide center liganded by two cysteines from each peptide. This hypothesis has been tested by site directed mutagenesis of PsaA residue C575 and the adjacent D576. The C575D mutant does not assemble Photosystem 1. The C575H mutant contains a photoxidisable chlorophyll with EPR properties of P700, but no other Photosystem 1 function has been detected. The D576L mutant assembles a modified Photosystem 1 in which the EPR properties of the Fe-SA/B centers are altered. The results confirm the importance of the conserved cysteine motif region in Photosystem 1 structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00020438
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