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Size-resolved and bulk activation properties of aerosols were measured at a regional/suburban site in the North China Plain (NCP), which is occasionally heavily polluted by anthropogenic aerosol particles and gases. A Cloud Condensation Nuclei (CCN) closure study is conducted with bulk CCN number concentration (N CCN) and calculated CCN number concentration(More)
The inactivation of lobster muscle D-glyceraldehyde-3-phosphate dehydrogenase (D-glyceraldehyde-3-phosphate:NAD+ oxidoreductase (phosphorylating), EC (GAPDH) during guanidine hydrochloride (GdnHCl) denaturation has been compared with its state of aggregation and unfolding, by light scattering and fluorescence measurements. The enzyme first(More)
Thermal adaptation of gross primary production and ecosystem respiration has been well documented over broad thermal gradients. However, no study has examined their interaction as a function of temperature, i.e. the thermal responses of net ecosystem exchange of carbon (NEE). In this study, we constructed temperature response curves of NEE against(More)
The inactivation of D-glyceraldehyde-3-phosphate dehydrogenase (D-glyceraldehyde-3-phosphate:NAD+ oxidoreductase (phosphorylating) EC (GAPDH) during thermal denaturation has been compared to its dissociation-aggregation measured by light scattering and changes in secondary structure measured by CD in the far ultraviolet. The inactivation at 38.5(More)
BACKGROUND A variant of conjoined twins is one in which one twin is incomplete. CASE A female infant was born vaginally at 40 weeks' gestation to a healthy primipara. No important abnormalities were noted during prenatal examinations. The infant was fully developed in all external aspects except for a parasitic body conjoined with her sacrococcygeal(More)
During denaturation by GuHCl, papain shows a rapid decrease in activity with increasing concentrations of the denaturant followed by an intermediate stage of relatively little change from 1 to 2 M before complete inactivation at 4 M GuHCl. At GuHCl concentrations lower than 2 M, enzyme activity is more sensitive to GuHCl than noticeable conformation changes(More)
An increase in Ca 2+ concentration in the nucleus may activate the PCD of secretory cavity cells, and further Ca 2+ accumulation contributes to the regulation of nuclear DNA degradation. Calcium plays an important role in plant programmed cell death (PCD). Previously, we confirmed that PCD was involved in the degradation of secretory cavity cells in Citrus(More)
The histological structures of the roots of Morinda officinalis How of different ages were observed, the distribution and accumulation of anthraquinones in the root were studied with the help of paraffin section, fluorescent microscope and ultraviolet spectrophotometer. The results indicated that the mature structures of the roots of M. officinalis were(More)
The active site carboxymethylated glyceraldehyde-3-phosphate dehydrogenase from B. stearothermophilus when irradiated with ultraviolet light in the presence of NAD gives rise to a fluorescent derivative closely similar to that obtained from the muscle enzyme in fluorescence properties. A radiationless energy transfer also occurs between the tryptophan(More)
Ultraviolet irradiation of carboxymethylated D-glyceraldehyde-3-phosphate dehydrogenase leads to the formation of a fluorescent NAD derivative. The structure of the enzyme from Palinurus versicolor carrying this derivative has been determined by molecular replacement and refined using the restrained least-squares method to 2.7 A with a final(More)