A fundamental challenge in modern mantle geochemistry is to link geochemical data with geological and geophysical observations. Most of the early geochemical models involved a layered mantle and the concept of geochemical reservoirs. Indeed, the two layer mantle model has been implicit in almost all geochemical literature and the provenance of oceanic island basalt (OIB) and mid-ocean ridge bas...

B y far the bulk of our planet is hidden from view, within the earth, under high pressures and temperatures. The behavior of this material dictates the formation, evolution, and present state of the solid earth. Recent geophysical and geochemical studies of the planet present us with a rich array of large-scale processes and phenomena that are not fully understood. These range from the fate of ...

Image Associative Memory by Recurrent Neural Subnetworks W ladys law S k arbek y3 and Andrzej Cichocki y33 , Members SUMMARY Gray scale images are represented by recurrent neural subnetworks which together with a competition layer create an associative memory. The single recurrent subnetwork N i implements a stochastic nonlinear fractal operator F i , constructed for the given image f i. W e sh...

Weighlevel, a mixture of extract of four plants used in traditional Arabic and Islamic medicine as well as in European herbal medicine, was prepared and assessed for its safety and efficacy in weight loss. Leaves of Alchemilla vulgaris, Olea europaea and Mentha longifolia L., as well as seeds of Cuminum cyminum, were used. Cultured human fibroblasts treated with Weighlevel did not exhibit any s...

The yield strength of oceanic lithosphere determines the mode of mantle convection in a terrestrial planet, and low-temperature plasticity in olivine aggregates is generally believed to govern the plastic rheology of the stiffest part of lithosphere. Because, so far, proposed flow laws for this mechanism exhibit nontrivial discrepancies, we revisit the recent high-pressure deformation data of M...

Introduction. Alchemilla herb is proposed for introduction into pharmaceutical practice, obtaining extracts with various pharmacological activity. To expand, resource base of it has been to use a high biomass cultivated plant – mollis (Buuser) Rothm. In terms qualitative and quantitative characteristics the chemical composition comparable samples raw materials wild-growing . The presence chemot...

Aim . In vitro analysis of the inhibitory activity aqueous extracts tea compositions, plant raw materials and as well plants from different families against replication Herpes simplex virus type 2. Material Methods The viral strain MS HSV‐2 was passivated on Vero cell culture. Antiviral (inhibitory) studied in according to classical scheme neutralization (inactivation) virus. Results For compar...

Nigella sativa, Conyza bonariensis, and Alchemilla vulgaris are highly recommended in Greco-Arab traditional medicine as anti-hemorrhoid medicinal plants. The efficacy safety of a topical cream (HPC) consisting water–ethanol extracts these three plants were evaluated here vitro randomized, double-blind, placebo-controlled study (RDBPC). HPC showed no significant cytotoxic effects fibroblast cel...

Abstract The monumental work of Olov Hedberg provided deep insights into the spectacular and fragmented tropical alpine flora African sky islands. Here we review recent molecular niche modelling studies re-examine Hedberg’s hypotheses conclusions. Colonisation started when mountain uplift established harsh diurnal climate with nightly frosts, accelerated throughout last 5 Myr (Plio-Pleistocene)...