The Chandler wobble is an excited resonance of the Earth's rotation having a period of about 14 months. Although it has been under investigation for more than a century, its excitation mechanism has remained elusive. Here, the angular momentum of the atmosphere computed from the products of a numerical weather prediction analysis system and the angular momentum of the oceans computed from a glo...

The homogeneous et of 80-year-long (1900-1979) International Latitude Service (ILS) polar motion data is analyzed using the autoregressive method (Chao and Gilbert, 1980), which resolves and produces estimates for the complex frequency (or frequency and Q) and complex amplitude (or amplitude and phase) of each harmonic component in the data. Principal conclusions of this analysis are that (1) t...

Geophysical processes which excite variations in the orientation of the Earth have an irregular nature therefore a stochastic approach to the description of Earth rotation seems to be the most appropriate. We describe here a simple stochastic model for the Chandler wobble, originally proposed by Jeereys (1940), then prove its advantage over the sinusoidal modeling by performing the goodness-of-...

Sri Suci Utami,a,b Benoı̂t Goossens,c Michael W. Bruford,c Jan R. de Ruiter,d and Jan A.R.A.M. van Hooffa aEthologie & Socio-ecologie, Universiteit Utrecht, PO Box 80086, 3508 TB Utrecht, The Netherlands, bFakultas Biologi, Universitas Nasional, Jl. Sawo manila, Jakarta 12510, Indonesia, cBiodiversity and Ecological Processes Group, School of Biosciences, Cardiff University, PO Box 915, Cathays ...

An attempt was made to understand the changes in physicochemical quality (total soluble solids, titratable acidity, ascorbic acid, total sugars, total phenolics, anthocyanin content, and cupric reducing antioxidant capacity assay) and total volatile/aroma compounds of two cultivars of strawberry (Camarosa and Chandler) during storage at 5°C for 9 days at an interval of three days. Observations ...

The North American species of Brachygluta Thomson, 1859 are revised, treating a total of 29 species. Six names are placed as junior synonyms: Bryaxis perpunctata Brendel, 1890 (=B. luniger LeConte, 1849), B. labyrinthea Casey, 1894 (=B. intermedia Brendel, 1866), B. loripes Casey, 1894 and B. jacobina Casey, 1908 (=B. foveata LeConte, 1851), B. arizonae Casey, 1887 (=B. texana Casey, 1886), and...

Although the protein-only hypothesis proposes that it is the conformation of abnormal prion protein (PrP(Sc)) that determines strain diversity, the molecular basis of strains remains to be elucidated. In the present study, we generated a series of mutations in the normal prion protein (PrP(C)) in which a single glutamine residue was replaced with a basic amino acid and compared their abilities ...