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51.
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H W Morehead K W Talmadge D J O'Shannessy C J Siebert 《Journal of chromatography. A》1991,587(2):171-176
A rapid, simple assay for aldehydes generated by oxidation of saccharide units in glycoproteins, using dyes containing hydrazide functionalities, is described. The assay is used, in conjunction with tests of biological activity, to predict oxidation conditions that will result in a maximum of active protein coupled to a hydrazide chromatographic support. Glycoproteins are labeled with Lucifer Yellow CH or Texas Red Hydrazide, and the extent of labeling is determined. Using the assay, it is shown that the efficiency of coupling to Affi-Prep Hydrazide is proportional to oxidation. 相似文献
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K.S. Heard J. Heintze G. Heinzelmann P. Igo-Kemenes W. Kalbreier E. Mittag H. Rieseberg B. Schürlein H.W. Siebert V. Soergel K.P. Streit A. Wagner A.H. Walenta 《Physics letters. [Part B]》1975,55(3):327-330
The branching ratio has been measured on the basis of 534 observed K+ → e+v decays. The K+ decay at rest; the momenta of the e+ and μ+ are measured in a magnetic spectrometer using multiwire driftchambers, and the electrons are identified in a gas Cerenkov counter. The result is R = (2.37 ± 0.17_× 10?5. The value predicted for pure axial-vector interaction and μ-e-universality is R = 2.57 × 10?5. 相似文献
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Background
Propriospinal neurons, with axonal projections intrinsic to the spinal cord, have shown a greater regenerative response than supraspinal neurons after axotomy due to spinal cord injury (SCI). Our previous work focused on the response of axotomized short thoracic propriospinal (TPS) neurons following a low thoracic SCI (T9 spinal transection or moderate spinal contusion injury) in the rat. The present investigation analyzes the intrinsic response of cervical propriospinal neurons having long descending axons which project into the lumbosacral enlargement, long descending propriospinal tract (LDPT) axons. These neurons also were axotomized by T9 spinal injury in the same animals used in our previous study. 相似文献59.
Michael J. Bayer Hans Pritzkow Walter Siebert 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(5):o257-o258
In the title compound, 1,1,6a,7,9a,10‐hexachloro‐2,3,5,6,8,9,11,12‐octa‐p‐tolyl‐1,6a,9a,12a‐tetraborata‐3a,4a,7,10‐tetrabora‐4a1,6b,9b,12b‐tetraoxonia‐4‐oxatetracyclopenta[1,2‐a:2,1,5‐de:1,2‐g:1,2‐i]naphthalene dichloromethane pentasolvate, C64H56B8Cl6O5·5CH2Cl2, two condensed oxadiborole rings are attached to two further oxadiborole rings in a type of donor–acceptor bonding, thus forming a ten‐membered alternating (B—O)5 naphthalene‐like arrangement as the central building block. 相似文献
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A. S. Romanov D. V. Muratov P. V. Petrovskii M. Yu. Antipin W. Siebert A. R. Kudinov 《Russian Chemical Bulletin》2009,58(3):594-599
The cationic triple-decker complexes [CpCo(1,3-C3B2Me5)M(C5R5)]+ (M = Rh (2), Ir (3), R = H (a), Me (b)) with the bridging diborolyl ligand were synthesized by the reaction of the sandwich anion [CpCo(1,3-C3B2Me5)]- (1) with the halide complexes [CpMI2]2 or [Cp*MCl2]2 (Cp* = C5Me5). The structures of [2b]PF6 and [3b]PF6 were established by X-ray diffraction. The nature of the metal—diborolyl bond in these complexes was analyzed using the energy
decomposition scheme. 相似文献