Systematic patterns of detrital K-feldspar decline with increasing burial depth are revealed during deep burial (1.5–4.5 km) of sandstones in diverse sedimentary basins from three rift and two passive margin settings in the North Sea and USA Gulf Coast. K-feldspar destruction is predominantly by dissolution, though in-situ alteration to albite also occurs. Dissolution can remove up to 15% solid...

Topical administration of 0.5% vanadate lowers intraocular pressure in monkey and rabbit eyes. This appears to be a consequence of a reduction in the rate of aqueous humor secretion, probably resulting from the inhibition of ciliary epithelium membrane. NaK ATPase. The ubiquitous vanadate and its interactions with catecholamines and ascorbate may play a role in regulating the sodium pump of the...

Ensifer adhaerens L18, isolated from potassium feldspar mining area soil, was found to be capable of solubilizing K from an insoluble K-bearing mineral source. Here, we report the draft genome sequence and annotation of the feldspar-solubilizing bacterium Ensifer adhaerens L18. These data provide the basis to investigate the relative impact of bacteria in feldspar solubilizing and the molecular...

Late Wisconsin till of the Cuba Moraine in Ohio consists of sediment contributed by local Paleozoic bedrock and by the igneous and metamorphic rocks of the Canadian Precambrian Shield. Feldspar in this till is derived predominantly from the Grenville and Superior structural provinces of Canada which are 1.07 b.y. and 2.70 b.y. old, respectively. Rb-Sr provenance dates of feldspar in the — 18 +3...

We study the performance of reliable and unreliable allnode broadcast over ad-hoc networks that use contentionbased channel access. To obtain analytical results while preserving hidden-terminal and node clustering characteristics of ah-hoc networks, we introduce a novel differentialequation fluid model for information flow through a network of cluster trees, where a spanning tree joins groups o...

Apparent blockage of monovalent cation currents by the permeating blocker Ca(2+) is a physiologically essential phenomenon relevant to cyclic nucleotide-gated (CNG) channels. The recently determined crystal structure of a bacterial homolog of CNG channel pores, the NaK channel, revealed a Ca(2+) binding site at the extracellular entrance to the selectivity filter. This site is not formed by the...

A growing number of network applications require the use of a reliable multicast protocol to disseminate data from a source to a potentially large number of receivers. This paper presents an analytic performance analysis of the packet delay incurred under three generic senderand receiver-initiated approaches towards reliable multicast. We focus on the host processing requirements of these proto...

The usage of “potassium feldspar” and “alkali has been confused in earth sciences for a long time. term is the solid solution series between two components KAlSi3O8 (potassium feldspar) NaAlSi3O8 (sodium feldspar), including more or less CaAl2Si2O8 (lime as third component. practice an end member feldspar solution. At present, scientific appropriate terms without confusion needed sciences. This...

shown in Fig. 3, which plot the maximum throughput achieved by each protocol when the number of receivers goes from 0 to 2000. The probability of a packet being lost is set to 0.02 and 0.1 in Fig. 3(a) and Fig. 3(b), respectively. We do not compare ELRP with the maximum throughout for tree-based protocols, because in a local group, a tree-based protocol is likely to have a single parent connect...

A numerical treatement of a model of semilinear parabolic equations on unbounded domain where the solutions blow up in finite time is presented. The numerical approximation requires selecting an appropriate bounded computational domain. The authors present suitable local absorbing boundary conditions (LABCs) in order to derive the bounded computational domain. A unified approach to derive such ...