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Gel polymer electrolytes (GPEs) exhibit enhanced safety and dimensional stability over liquid electrolytes (LEs), which is the critical advantage for the application of the Li-ion batteries (LIBs) to the electric vehicles and the renewable energy storage. The LIBs employing GPEs, however, are known to suffer from inferior power density due to the poor ionic conductivity of GPEs compared with LEs. In this study, it is demonstrated that the acrylate-based GPEs, prepared by the in-situ thermal cross linking polymerization, can show higher power density than LEs. It is found that LiNi1/3Mn1/3Co1/3O2/graphite cell employing the GPE exhibits 60 % higher discharge capacity at 2 C rate than the cell with LEs. To reveal the reason for the improved power performance of the GPE, the charge transport behavior of the electrode/electrolyte interface is examined by using electrochemical impedance spectroscopy (EIS) at various temperatures.
Objective To derive normative values for ulnar nerve conduction study of the active recording electrode on the fi rst dorsal interosseous muscle (FDI) and the reference electrode on the proximal phalanx of the thumb. Method Ulnar nerve motor conduction study with FDI and abductor digiti minimi muscle (ADM) recording was performed in 214 hands of 107 healthy subjects. Ulnar NCS was performed with 2 different recording electrode montages (ADM-base of 5th finger; FDI-thumb) and diff erences in latency and amplitude were compared. Using this technique, the initial positivity of ulnar compound muscle action potential (CMAP) was not observed in any response with FDI recording. Results The maximal values for distal motor latency to the ADM and FDI muscle were 3.8 ms and 4.4 ms,respectively. Th e maximal difference of distal motor latency between the bilateral FDI recordings was 0.6 ms. The maximal ipsilateral latency difference between ADM and FDI was 1.4 ms. Conclusion Placement of the reference electrode on the thumb results in a CMAP without an initial positivity and the normative values obtained may be useful in the diagnosis of ulnar neuropathy at the wrist.
Settlement at reclamation area caused by secondary compression should be considered using spatial evaluating method because the thickness of consolidation layer varies at every location. Probabilistic method can be implemented to evaluate uncertainty of spatial distribution of secondary compression. This study spatially evaluated mean and standard deviation of secondary compression in the overall analyzing region using spatial distribution of consolidation thickness estimated by ordinary kriging method and statistical values of soil properties. And then, the area where secondary compression exceeds a design criterion at the specific time was evaluated using probabilistic method. It was observed that the area exceeding the design criterion increased as the variability of Cα/(1+e0) increased or the probabilistic design criterion decreased. It is considered that the probabilistic method can be used for the geotechnical design of soft ground when a probabilistic design criterion is established in the specification.