A dwarf nova HV Vir was observed photometrically for eight nights during the outburst in 1992 April -May. The star showed two distinct types of periodic variation: (1) 82.20-min (0.05708 d) double-humped variation with decaying amplitudes during the early stage of the outburst, and (2) 83.80-min (0.05820 d) superhumps in later stages. We attributed the former to "early superhumps", which are only seen in the earliest stage of WZ Sge-type outbursts. The superhump period and evolution of the superhumps, together with general characteristics of the light curve, make HV Vir a typical WZ Sge-type dwarf nova. HV Vir also showed a large increase of the superhump period during the superoutburst. Upon the recognition of the WZ Sge-type nature of an object previously considered as a nova, we present a comprehensive list of candidates for WZ Sge-type dwarf novae, and related systems.

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A novel leuco phenoxazine color former containing l-phenylalanine at the protecting group was prepared for radiation detection systems. It forms elongated self-assembled fibers in common organic solvents, leading to that efficient gelation. FE-SEM and FT-IR of the xerogel showed the color former formed a three-dimensional net-like structure. The color former organogel showed sufficient sensitivity to γ rays that it can be used for imaging in heavy particle radiotherapy and has good potential for three-dimensional radiation detection systems.

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