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Hydrogen Reduction of Oxidized Nickel Concentrates
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Thermal gravimetric analysis was used to investigate the weight change of Ni/Cu/Co calcines upon heating in an inert as well as hydrogen atmosphere. The two calcines investigated contained approximately 50 wt pct combined of hematite and magnetite in addition to sulfides of Ni, Cu, Co, and Fe. Mass spectrometry was used to analyze the gas species evolved during heating and reduction.
The calcine samples are 100 pet less than 100 µm with hematite/magnetite rims around a central sulfide core. When heating the calcines at 10 °C/min in hydrogen, reduction starts at around 400 0C and is nearly ...
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Sabia on shells: A specialized Pacific-type commensalism in the Caribbean neogene
Magazine article from: Journal of Paleontology
; ...the Caribbean and elsewhere in the western Atlantic than in the Indo-West Pacific, selectively eliminated Sabia and its commensalism from Atlantic reef ecosystems. This case is one of several examples indicating the vulnerability of specialized associations...
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Temple monkeys and health implications of commensalism, Kathmandu, Nepal.(RESEARCH)(infectious diseases research)
Magazine article from: Emerging Infectious Diseases
; The threat of zoonotic transmission of infectious agents at monkey temples highlights the necessity of investigating the prevalence of enzootic infectious agents in these primate populations. Biological samples were collected from 39 rhesus macaques at the Swoyambhu Temple and tested by
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New findings from Okayama University describe advances in discrete and continuous dynamical systems.
Newspaper article from: Journal of Mathematics
; ...one-predator modesl in which the commensalism induced by a predator between two prey...concluded: "It is also shown that the commensalism via predator species affects spreading...SPECIES: THE EFFECT OF THE PREDATORY COMMENSALISM IN TWO-PREY, ONE-PREDATOR SYSTEM...
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Dreissena polymorpha and Conchophthirus acuminatus: what can we learn from host-commensal relationships.(Report)
Magazine article from: Journal of Shellfish Research
; ...questions relating to symbiosis and commensalism. The acquisition of food by the ciliate...whereas the other remains unaffected (commensalism) or both may benefit (mutualism...questions relating to symbiosis and commensalism. As suggested by Saffo (2001...
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Symbiotic relationships between pseudoscorpions (Arachnida) and packrats (Rodentia).
Magazine article from: Journal of Arachnology
; ...Keywords: Packrats, Neotoma, phoresy, commensalism, mutualism RESUMEN. Treinta y dos...of such interactions: parasitism, commensalism and mutualism. Phoresy is defined...active phoresis is an example of commensalism where the pseudoscorpion benefits from...
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SPIONID BORE HOLE POLYDORICHNUS SUBAPICALIS NEW ICHNOGENUS AND ICHNOSPECIES: A NEW BEHAVIORAL TRACE IN GASTROPOD SHELLS
Magazine article from: Journal of Paleontology
; ...occupation by a hermit crab and for commensalism between polychaetes and hermit crabs...and McDermott (2004) in defining commensalism. A description of a new fossil ichnogenus...and possibly present the history of commensalism between polychaetes and hermit crabs...
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Altitudinal distribution and outdoor occurrence in chromosomal races of the house mouse (Mus musculus domesticus) in central Italy
Magazine article from: Folia Zoologica
; ...populations living indoors and a few Rb populations living outdoors indicates that commensalism is not a necessary condition to become Robertsonian. Moreover, commensalism may only be a by-product of the demographic and ecological conditions that...
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Campylobacter jejuni genes involved in GI tract colonization are identified.
Newspaper article from: Gastroenterology Week
; ...Microbiology report. "To understand how the bacterium promotes commensalism, we used signature-tagged transposon mutagenesis and identified...focusing on the bacterial requirements necessary for promoting commensalism in a vertebrate host," concluded investigators. Hendrixson...
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Findings from H.E. Zaixso et al in marine biology reported.
Newspaper article from: Ecology, Environment & Conservation
; ...which live in their mantle cavities. The boundary between commensalism and parasitism is often indistinguishable because of insufficient...an isopod, Edotia doellojuradoi, previously described as commensalism. Monthly intertidal samples of mussels were taken from September...
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Studies from Ewha Womans University yield new information about ecology.
Newspaper article from: Ecology, Environment & Conservation
; ...between crayfish and branchiobdellids can fluctuate between commensalism and mutualism depending mainly on the environmental fouling...Lee and colleagues published their study in Oecologia (Commensalism or mutualism: conditional outcomes in a branchiobdellid...
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