Samples of ferromanganese nodules from several localities in Lake Michigan have been analyzed for their minor element content utilizing neutron activation techniques. The thorium and uranium levels in Lake Michigan nodules exhibit marked dissimilarities with marine nodules. The radium content of these freshwater nodules is substantially higher than the reported marine values. The concentrations...

Heart failure is a common problem and a major cause of mortality, morbidity and impaired quality of life. Anemia is a frequent comorbidity in heart failure and further worsens prognosis and disability. Regardless of anemia status, iron deficiency is a common and usually unidentified problem in patients with heart failure. This article reviews the mechanisms, impact on outcomes and treatment of ...

We introduce a simple cellular-network model to explain the capacity of the plants as memory devices. Following earlier observations (Bose [1] and others), we regard the plant as a network in which each of the elements (plant cells) are connected via negative (inhibitory) interactions. To investigate the performance of the network, we construct a model following that of Hopfield, whose energy f...

in this research, some more applicable ferrofluids are produced and their mechanical specifications are measured, experimentally. also, their treatments in the ventilated cavity geometry are assessed numerically. the magnetite nanoparticles are produced by a chemical combination of fe2+ and fe3+ with nh3. in order to solve the nanoparticles in the new mediums, a proper coating is added to them....

A descoberta de ferramentas associadas à metalurgia e carpintaria na Idade do Ferro bretã é relativamente esparsa. Achados tipo são encontrados em assentamentos, tesouros ocultados e, às vezes, cemitérios. Este artigo aborda a deposição ferramentas, como tenazes, limas, martelos outros, analisando contextos funerários King Harry Lane (Hertfordshire), Whitcombe (Dorset), Rudston Burton Fleming (...

Possible ferro-electromagnetic performance of “reduced graphene oxide (r-GO)” deposited on the surface “ZnO-nanorod (NR) decorated with nanocrystalline (nc) Au particles” is studied using different spectroscopies and magnetic measurements. The presence carbon/zinc-interstitials (Zni), nc-Au, oxygen vacancies are established through electronic property studies spectroscopic moment (M) applied fi...

OBJECTIVE The objective of this study was to determine the effect of non-occupational exposure to manganese (Mn) on postural balance. METHODS Residents living near a ferromanganese refinery provided hair and blood samples after postural balance testing. The relationship between hair Mn and postural balance was analyzed with logistic regression. Following covariate adjustment, postural balance...

The total mortality and the incidence of cancer was studied among a cohort of employees at the six oldest ferrosilicon and ferromanganese plants in Norway. The cohort consisted of 6494 men employed for more than 18 months before 1970 and has been followed up from 1953 to 1982. The standardised incidence ratio (SIR) for cancer (all sites) was 0.94. The observed number of cancers was as expected ...