Materials Literature
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This contribution illustrates the effect of additions different in type and fineness and maximum packing density on the macroscopic properties, rheology and bond of steel fibres of UHPC. The results show that the properties of the UHPC investigated were decisively affected by the particle size distribution of the addi…
Manganese and cobalt ions planted approach was used to introduce manganese/cobalt species into MCM-48-type mesoporous materials.For comparison, the cobalt was highly dispersed within the channels of mesoporous MnMCM-48 samples by impregnation approach.The prepared mesoporous materials were characterized by physico-che…
We have calculated slab fluid temperatures for 51 volcanoes in 10 subduction zones using the newly developed H₂O/Ce thermometer. The slab fluid compositions were calculated from arc eruptives, using melt inclusion-based H₂O contents, and were corrected for background mantle contributions. The temperatures, adjusted to…
This research work shows the feasibility of power generation in a mediatorless dual chambered microbial fuel cell, utilizing cassava starch as the proton exchange membrane (PEM). The study employed swine house effluent (a serious environmental threat) as the substrate (fuel) (pH, 7.2, BOD: 1200mg/l, COD: 3800mg/l) in…
Let G be a connected graph with vertex set V (G) and edge set E(G). The eccentric connectivity index of G, denoted by ξc(G), is defined as∑ v∈V (G) deg(v)ec(v), where deg(v) is the degree of a vertex v and ec(v) is its eccentricity. In this paper, we propose the edge version of the above index, the edge eccentric conn…
A survey was developed to collect information on full-scale industrial gaseous VOCs treatment facilities.Based on 771 VOCs treatment cases,the application status of different VOCs treatment techniques was analyzed.By investigating the marketing occupation ratio,gas flow rate,VOCs concentration,VOCs type and the indust…
The appearance observation,mineral composition,as well as microstructure morphology towards various cement pastes and motars with and without 30% fly ash or 50% slag dipped in 5% Na2SO4 solution at room temperature for 2 years were character-ized by X-CT,X-ray diffraction and scanning electron microscopy to investigat…
Because ferritic stainless steel is less formable when compared with austentic stainless steel,its wide application is restricted.In this paper,the advantages and disadvantages of ferritic stainless steel were introduced,and two main aspects of drawability,namely deep-drawing property and ridging resistance,were discu…
This paper firstly makes a retrospective review of some iterative learning control techniques and results regarding to the initial state shift issue and the monotone convergence analysis. Secondly, the paper presents a review of the higher-order iterative learning control scheme including its convergence speed compari…
Ammonium perchlorate / graphene aerogels(AP/GA) nanocomposites were prepared by sol-gel method and characterized by scanning electron microscope(SEM),elemental analysis and X-ray diffraction(XRD).Their thermal decomposition behaviours were investigated by TG-DSC-IR.The results indicate that AP is presented in the AP/G…
The dye-sensitized solar cell, often called the “gratzel cell” after its inventor, is a promising route toward harvesting solar energy in the effort to address the daunting global energy and environment challenges of the 21st century. Recently, dyesensitized solar cells based on natural pigments have been demonstrated…
The true stress-strain curves of AZ31B magnesium alloy sheet were obtained by using the uniaxial tensile tests at temperatures ranging from 50to 300 and initial strain rates ranging from 0.001/s to 0.1/s. The effects of temperature and strain rate on the flow stress were analyzed. The results show that the flow stress…
Fungal endophytes were isolated from Boswellia serrata, an ethnopharmacologically important tree species used in ayurvedic medicines to treat inflammation. Isolations were made from symptomless bark, inner bark, twig and leaf samples collected from Chamundi Hills, Mysore. A total of 530 isolates were recovered from 30…
Congruent evaporation of a crystalline material in vacuum is an extreme reaction in that backward reactions and transport processes in the reactant can be neglected. The evaporation is strongly governed by surface processes and intrinsic nature of the substance. A thorough knowledge of the atomistic evaporation mechan…
In this paper we study the design principle of two types of frequency selective surfaces (FSS) based planar microwave absorber. The flrst type of the microwave absorber is a high impedance surface (HIS) based microwave absorber, constructed by using a periodic lossy dipoles FSS backed by a metal plate. The second type…
Electrical dc conductivity of kaolin and ceramic material consisting of 50 wt.% of kaolin and clay, 25 wt.% of quartz and 25 wt.% of feldspar was measured in the temperature range of 20-600 C. At low temperatures (20-200 C), charge carriers are H + and OH -ions released from defects located on crystal surfaces and pol…
Interdigitated microelectrodes (IDEs) functionalized with a cysteamine (Cys) self-assembled monolayer (SAM) were used to fabricate a sensitive, disposable, impedimetric biosensor for prostate specific antigen (PSA) detection. PSA specific monoclonal antibody (anti-PSA) was covalently immobilized on cysteamine modified…
We found that LaInO3 perovskite catalyst showed high activity for oxidative coupling of methane (OCM). Partial substitution of La3+ site in the LaInO3 catalyst with Ba2+ increased its catalytic activity and selectivity to C2 hydrocarbons drastically. The partial substitution of La3+ site in LaInO3 with Ba2+ increased…
Nwogu NA, Atuanya EI, Akpaja EO 2012 -Capability of selected mushrooms to biodegrade polyethylene. Mycosphere 3(
Austenite formation on the surface of pure iron during nitriding in a mixture of NH3 and H2 gases and surface hardening due to formation of iron-nitrogen martensite by subsequent quenching were investigated. In nitriding at 973 K at a partial pressure of NH3(fNH3) of 5% and 10%, austenite layer is formed at the surfac…