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Ni-Co laterite deposits. Nickel-cobalt Ni-Co laterite deposits are an important source of nickel Ni. Currently, there is a decline in magmatic Ni-bearing sulfide lode deposit resources. New efforts to develop an alternative source of Ni, particularly with improved metallurgy processes, make the Ni-Co laterites an important exploration target in anticipation of the future demand for Ni.

This deposit model provides a general description of the geology and mineralogy of Ni-Co laterite deposits, and contains discussion of the influences of climate, geomorphology relief , drainage, tectonism, structure, and protolith on the development of favorable weathering profiles. This model of Ni-Co laterite deposits represents part of the U. Geological Survey Mineral Resources Program's effort to update the existing models to be used for an upcoming national mineral resource assessment.

Traumatic brain injury and posttraumatic stress disorder are the signature injuries of the Iraq and Afghanistan wars. In this work we describe the architecture and holistic medicine programming of the National Intrepid Center of Excellence NICoE , a new clinical research center for traumatic brain injury and posttraumatic stress disorder in the Military Health System. A groundbreaking institution, the NICoE foreshadows many trends in national healthcare for the 21st century.

All rights reserved. Single chamber microbial fuel cell with Ni-Co cathode. The possibility of wastewater treatment and the parallel energy production using the Ni-Co alloy as cathode catalyst for single chamber microbial fuel cells is presented in this research.

The reduction time for COD with the use of microbial fuel cell with the Ni-Co catalyst is similar to the reduction time with aeration. The current density 2. It has been shown that the Ni-Co can be used as cathode catalyst in single chamber microbial fuel cells. PubMed Central. Herein, this review will be arranged from three aspects. We will summarize the controllable architectures of spinel NiCo 2O4 fabricated by various approaches. Then, we introduce their performances as supercapacitors due to their excellent electrochemical performance, including superior electronic conductivity and electrochemical activity, together with the low cost and environmental friendliness.

Finally, the review will be concluded with the perspectives on the future development of spinel NiCo 2O4 utilized as the supercapacitor electrodes. Ultrathin porous NiCo 2O4 nanosheet arrays on flexible carbon fabric for high-performance supercapacitors. NiCo 2O4 with higher specific capacitance is an excellent pseudocapacitive material. However, the bulk NiCo 2O4 material prevents the achievement of high energy desity and great rate performance due to the limited electroactive surface area.

In this work, NiCo 2O4 nanosheet arrays were deposited on flexible carbon fabric CF as a high-performance electrode for supercapacitors. The NiCo 2O4 arrays were constructed by interconnected ultrathin nanosheets 10 nm with many interparticle pores.

The porous feature of NiCo 2O4 nanosheets increases the amount of electroactive sites and facilitates the electrolyte penetration. NiCo 2O4 particles with diamond-shaped hexahedron structure for high-performance supercapacitors. Nickel cobalt oxide NiCo 2O4 particles with a diamond-shaped hexahedral porous sheet structure are successfully synthesized by a facile hydrothermal method, followed by calcination in one step. The electrochemical measurements show that NiCo 2O4 particles exhibit a high specific capacitance.

At a current density of 1. Synthesis and characterization of immobilized Ni-Co bimetallic using Tapanuli clay for catalyst application. Heterogeneous catalysts hold various advantages, namely, easy to separate from their products, reusable and regarded as environmental friendly materials.

The synthesis of immobilized Ni monometallic, Co monometallic and Ni-Co bimetallic by Tapanuli clay were carried out using intercalation method. Firstly, the synthesis of Na-Bentonite was conducted to provide sufficient area to immobilize bimetal in the clay interlayer. Catalytic test with Gas Chromatography showed that Ni-Co bimetallic generates a higher yield percentage compared to Ni and Co monometallic. NiCo 2S4 nanorod embedded rGO sheets as electrodes for supercapacitor.

We report the synthesis of a hybrid nanostructure based on NiCo 2S4 and reduced graphene oxide rGO following a facile hydrothermal method. In situ growth of NiCo 2 S 4 nanosheets on graphene for high-performance supercapacitors. We demonstrate a facile hydrothermal method for growth of ultrathin NiCo 2S4 nanosheets on reduced graphene oxide RGO , which exhibit remarkable electrochemical performance with higher capacitance and longer cycle life than the bare NiCo 2S4 hollow spheres HSs.

Detection of free nickel monocarbonyl, NiCO : rotational spectrum and structure. Unsaturated transition metal carbonyls are important in processes such as organometallic synthesis, homogeneous catalysis, and photochemical decomposition of organometallics.

In particular, a metal monocarbonyl offers a zeroth-order model for interpreting the chemisorption of a CO molecule on a metal surface in catalytic activation processes. Quite large numbers of theoretical papers have appeared which predict spectroscopic and structural properties of transition metal carbonyls. The nickel monocarbonyl NiCO has been one of the metal carbonyls most extensively studied by the theoretical calculations.

At least 50 theoretical studies have been published on this simplest transition metal carbonyl up to the present time. However, experimental evidence of NiCO is much more sparse than theoretical predictions, and the actual structure of NiCO has never been determined by any experimental methods. This Communication reports the first preparation of free nickel monocarbonyl and observation of its rotational transitions. The accurate bond lengths of Ni-C and C-O were experimentally determined from isotopic data and were compared with the theoretical predictions for the first time.

Ni-Co duplex coatings were cladded onto Cu to improve the antiwear properties of Cu products. The structure and morphology of the coatings were characterized by scanning electron microscopy and optical microscopy, and the phases of the coatings were analyzed by X-ray diffraction. Their hardness was measured using a microhardness tester. Experimental results showed that defect-free composite coatings were obtained and that the coatings were metallurgically bonded to the substrates.

The microhardness and wear resistance of the duplex coatings were significantly improved compared with the Cu substrates. The average microhardness of the cladded coatings was The volume loss of the Cu substrates was approximately 7.

The high hardness of and lack of defects in the Ni-Co duplex coatings reduced the plastic deformation and adhesive wear of the Cu substrates, resulting in improved wear properties.

Control of structures and components of the nanoarray catalysts is very important for electrochemical energy conversion. Herein, unique NiCo 2 O 4 MnO 2 core-shell nanoarray with hollow NiCo 2 O 4 Cores and MnO 2 flake shells is in situ fabricated on carbon textile via a two-step hydrothermal treatment followed by a subsequent annealing. The as-made nanoarray is highly active and durable catalyst for oxygen evolution reaction in alkaline media attribute to the synergetic effect derived from spatially separated nanoarray with favorable NiCo 2 O 4 and MnO 2 compositions.

Herein, unique NiCo 2O4 MnO2 core—shell nanoarray with hollow NiCo 2O4 Cores and MnO2 flake shells is in situ fabricated on carbon textile via a two-step hydrothermal treatment followed by a subsequent annealing. The as-made nanoarray is highly active and durable catalyst for oxygen evolution reaction in alkaline media attribute to the synergetic effect derived from spatially separated nanoarray with favorable NiCo 2O4 and MnO2 compositions.

Binder free nanostructured NiCo 2O4 were grown using a facile hydrothermal technique. X-ray diffraction patterns confirmed the phase purity of NiCo 2O4.

The surface morphology and microstructure of the NiCo 2O4 analyzed by scanning electron microscopy SEM showed flower-like morphology composed of needle-like structures. The potential application of binder free NiCo 2O4 as an electrode for supercapacitor devices was investigated using electrochemical methods. The cyclic voltammograms of NiCo 2O4 electrode using alkaline aqueous electrolytes showed the presence of redox peaks suggesting pseudocapacitance behavior.

Quasi-solid state supercapacitor device fabricated by sandwiching two NiCo 2O4 electrodes and separating them by ion transporting layer. The performance of the device was tested using cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy. The device showed excellent flexibility and cyclic stability. The temperature dependent charge storage capacity was measured for their variable temperature applications. Hence, the results suggest that NiCo 2O4 grown under these conditions could be a suitable material for high performance supercapacitor devices that can be operated at variable temperatures.

Flexible threadlike supercapacitors with improved performance are needed for many wearable electronics applications. Here, we report a high performance flexible asymmetric all-solid-state threadlike supercapacitor with a NiCo 2 Se 4 positive electrode and a NiCo 2 O 4 PPy PPy: polypyrrole negative electrode. The as-prepared electrodes display outstanding volume specific capacitance The asymmetric all-solid-state threadlike supercapacitor expanded the stability voltage window from This study provides a scalable method for fabricating high performance flexible supercapacitors from easily available materials for use in wearable and portable electronics.

KGaA, Weinheim. NiCo as catalyst for magnetically induced dry reforming of methane. In this paper we report the activation of the dry reforming reaction by induction heating of a NiCo alloy. The catalyst plays a double role, serving both as a promoter for the reforming reaction and producing the heat induced by dissipation of the electromagnetic energy.

In this respect Ni:Co ratio was chosen. Alloy active sites for CH4and CO2activation are created by a mechanochemical treatment of the alloy that increases solid-state defects. The catalyst has been successfully tested in a continuous-flow reactor working under atmospheric pressure. Methane conversion and hydrogen production yields have been measured as a function of the applied magnetic field, reactant flow rate and time on stream. High energy density and cost effectiveness make lithium-sulfur battery a promising candidate for next-generation electrochemical energy storage technology.

The hollow interior cavity providing structural integrity while sufficient self-functionalized surfaces of NiCo 2O4 chemically bind polysulfides to prevent their dissolution in the organic electrolyte. Hierarchical porous NiCo 2O4 nanowires for high-rate supercapacitors. We demonstrate a simple and scalable strategy for synthesizing hierarchical porous NiCo 2 O 4 nanowires which exhibit a high specific capacitance of F g -1 at 1 A g -1 with excellent rate performance Onion-like NiCo 2 S 4 particles with unique hollow structured shells are synthesized by a sequential ion-exchange strategy.

With the structural and compositional advantages, these unique onion-like NiCo 2 S 4 particles exhibit enhanced electrochemical performance as an electrode material for hybrid supercapacitors. Developing low-cost catalyst for high-performance oxygen reduction reaction ORR is highly desirable. In order to facilitate efficient and clean utilization of coal, a series of Ni-Co ternary molten salt crystals are explored and the catalytic pyrolysis mechanism of Datong coal is investigated.

The reaction mechanisms of coal are achieved by thermal gravimetric analyzer TGA , and a reactive kinetic model is constructed. The microcosmic structure and macerals are observed by scanning electron microscope SEM.

The catalytic effects of ternary molten salt crystals at different stages of pyrolysis are analyzed. The experimental results show that Ni-Co ternary molten salt catalysts have the capability to bring down activation energy required by pyrolytic reactions at its initial phase. Also, the catalysts exert a preferable catalytic action on macromolecular structure decomposition and free radical polycondensation reactions.

Furthermore, the high-temperature condensation polymerization is driven to decompose further with a faster reaction rate by the additions of Ni-Co ternary molten salt crystal catalysts.

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Medical Dictionary / Diccionario de Medicina / Dicionário de termos médicos

Assessment of nutritional status in haemodialysis patients. Sin embargo, no existe un consenso para evaluarla. Malnutrition is a common problem and a risk factor of mortality in haemodialysis patients. However, there is no consensus for its assessment.

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