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Fujisawa, Naoaki,Oya, Soichi,Mori, Harushi,Matsui, Toru The Korean Neurosurgical Society 2015 Journal of Korean neurosurgical society Vol.58 No.5
Chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids (CLIPPERS) is a relapsing-remitting disorder for which steroid administration is a key to control the progression. CLIPPERS can exhibit radiological features similar to malignant lymphoma, whose diagnosis is confounded by prior steroid administration. We report a case of CLIPPERS accompanied by abnormal elevation of ${\beta}-2$ microglobulin in the cerebrospinal fluid (CSF). A 62-year-old man started to experience numbness in all fingers of his left hand one year ago, which gradually extended to his body trunk and legs on both sides. Magnetic resonance imaging demonstrated numerous small enhancing spots scattered in his brain and spinal cord. CSF levels of ${\beta}-2$ microglobulin were elevated; although this often indicates central nervous system involvement in leukemia and lymphoma, the lesions were diagnosed as CLIPPERS based on the pathological findings from a biopsy specimen. We emphasize the importance of biopsy to differentiate between CLIPPERS and malignant lymphoma because the temporary radiological response to steroid might be the same in both diseases but the treatment strategies regarding the use of steroid are quite different.
Evaluation on Tracking Capability of MPPT for Running Solarcar
Yasuro Haseo,Toru Fujisawa 제어로봇시스템학회 2008 제어로봇시스템학회 국제학술대회 논문집 Vol.2008 No.10
Maximum Power Point Tracker (MPPT) is studied to obtain maximum output of PV anytime. There are plural control methods (e.g. Hill Climbing, Genetic Algorithm, Fibonacci Search Algorithm et al.) in MPPT. However, the conventional control method is not suitable for moving vehicles’ PV, such as a solarcar. Therefore, the authors tested a generation characteristic of running state. In this study, The efficiency of Power Comparing Type and Hill Climbing Type MPPT systems is evaluated by outdoor running experiment. In Addition, it is not made clear about the detailed state for the generation characteristic on running time. So, we measured intergradation of real-time PV curve with a capacitor charge type I-V curve tracer. As a result, when the effect of shadow was intense, it was found that possibility of Power Comparing Method was useful.