Diffusion coefficient

In this study, a layered O3-type Ni-rich cathode material for sodium-ion batteries was synthesized through co-precipitation followed by a solid-state reaction at 650 oC in dry air. The electrochemical properties of the Ni-rich material were evaluated. Charge/discharge performance demonstrated that the material delivered higher capacity compared to other layered oxides.

6p vikwong 29-09-2024 2 1   Download

Although Cryptococcal infection is worldwide distribution, it is more seen in the immunocompromised patients. Cryptococcus neoformans is the most common central neurvous system fungal pathogen in HIV infected patients. In this paper we present an immunocompromised HIV infected case of C. neoformans meningitis with clinical features and imaging characteristics by MR image.

4p vifaye 20-09-2024 9 1   Download

To evaluate the prognostic value of the apparent diffusion coefficient (ADC) derived from difusionweighted magnetic resonance imaging (MRI) and monitor the early treatment response to induction chemotherapy (IC) with plasma EBV DNA in locoregionally advanced nasopharyngeal carcinoma (LA-NPC).

9p vielonmusk 21-01-2022 12 1   Download

Purpose: The purpose of thesis is to study the influence of temperature, pressure and dopant on the diffusion coefficient and ionic conductivity of the bulk material as CeO2, c-ZrO2, YDC and YSZ. For YDC and YSZ thin films, we find the thickness dependence of the lattice constant, diffusion coefficient and ionic conductivity

28p tunelove 10-06-2021 11 2   Download

Nanocomposite material LiFe1-xMxPO4/Gr was successfully synthesized achieving it with single phase. It’s response required electrochemical parameters of positive electrode materials for Li-ion batteries such as: improved diffusion coefficient and conductivity, higher capacity comparative with LFP in same conditional synthesis.

28p capheviahe26 25-01-2021 21 3   Download

In this paper we use a new method based on Einstein’s equation to calculate the diffusion coefficient of impurity atoms in the disorder systems. Simulation results show that the diffusion coefficient D obeys the Arrhenius law. The dependence of the diffusion coefficient D on temperature for regular disordered lattice is also examined and discussed.

7p larachdumlanat127 20-12-2020 12 2   Download

We build the theory of diffusion for FCC binary interstitial alloy under pressure based on the statistical moment method, where there are the analytic expressions of the jumping frequency of interstitial atom, the effective jumping length, the correlation factor, the diffusion coefficient, and the activated energy. In limit cases, we can obtain the diffusion theory for FCC metal A under pressure.

6p tamynhan5 10-12-2020 6 1   Download

The effects of strain on the diffusion of impurities in silicon crystal are investigated using the statistical moment method (SMM). The influence of tensile strain on diffusion coefficient D is characterized by relaxation volume V r and migration volume V m. The numerical results for B and P diffusion in silicon that are performed and compared to experimental data show good agreement.

8p tamynhan8 04-11-2020 10 0   Download

The diffusion coefficient is found to be a product of the rate of LDF and mean square displacement of Fe particles per LDF. The diffusion is realized by two types of activated LDFs. First type is accompanied by frequent back-and-forth movements of Fe particles. The second type causes the random movement of Fe particles.

7p tamynhan8 04-11-2020 8 1   Download

The additional network-modifying cation oxide breaking up this network by the generation of nonbridging O atoms and it has a slight effect on the topology of SiOx and OSiy units. Moreover, the diffusion of network- former atom in sodium-silicate melt is anomaly and diffusion coefficient for sodium atom is much larger than for oxygen or silicon atom. The simulation proves two diffusion mechanisms of the network-former atoms and modifier atoms.

10p tamynhan6 14-09-2020 16 4   Download

Determine the coefficient of water permeability, waterproofing marks, chloride ion diffusion coefficients of some types of concrete commonly used in bridge construction subjected to pre-compressive and direct-compression loads. Develop a predictive model for life expectancy using reinforced concrete bridges taking into consideration the effect of the load according to the criteria of initial corrosion of reinforcement in concrete. Application of life expectancy for the structure of reinforced concrete bridges.

27p kequaidan7 01-09-2020 30 2   Download

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: Détermination indirecte des coefficients de diffusion de la vapeur d’eau dans les directions tangentielle et radiale du bois de hêtre...

9p toshiba7 05-10-2011 54 5   Download