Young's double-slit experiment with undulator vortex radiation in the photon-counting regime.

Young's double-slit interference experiments with undulator vortex radiation were conducted, focusing on photon-counting regime. To isolate the second harmonic radiation in the ultraviolet range emitted from the helical undulator and achieve successful counting measurements, an ultranarrow bandpass filter was utilized under an extremely low-current mode of the electron storage ring. It was observed that the photon spots on the detector, after passing through the double slits, appeared to be randomly distributed.

Rugged bialkali photocathodes encapsulated with graphene and thin metal film.

Protection of free-electron sources has been technically challenging due to lack of materials that transmit electrons while preventing corrosive gas molecules. Two-dimensional materials uniquely possess both of required properties. Here, we report three orders of magnitude increase in active pressure and factor of two enhancement in the lifetime of high quantum efficiency (QE) bialkali photocathodes (cesium potassium antimonide (CsKSb)) by encapsulating them in graphene and thin nickel (Ni) film.

Retrospective analysis of non-anaplastic peripheral T-cell lymphoma in pediatric patients in Japan.

Background: Reports of non-anaplastic peripheral T-cell lymphoma (PTCL) in pediatric patients are relatively rare.

Procedure: We performed a retrospective analysis in patients with PTCL over an 18-year period (1991-2008).

Results: We could analyze clinical data in 21 patients with non-anaplastic PTCL; 10 were female and 10 male.

Results for 79 patients with neuroblastoma detected through mass screening at 6 months of age in a single institute.

Background: In Japan, mass screening for neuroblastoma has been performed at 6 months of age to improve the prognosis of this condition for more than 20 years. In recent years, most neuroblastomas detected by mass screening were considered to have favorable biological features and sometimes tend to regress spontaneously.

Methods: The authors established non-treated observation criteria in 1997 and criteria for observation of residual tumor after first-line chemotherapy in 1999, and have made an effort to reduce the intensity of medical treatment for neuroblastoma.

Spontaneous regression of metastases including meningeal metastasis after gross resection of primary tumor in an infant with stage 4 neuroblastoma.

Neuroblastoma is the most common extracranial solid tumor in childhood. Spontaneous regression has been well described in infants, especially in those with stage 4S and those with low-stage neuroblastoma detected by screening. However, neuroblastoma presenting with intracranial metastasis is generally considered to need a postoperative chemotherapy.

HLA-B polymorphism in Japanese HIV-1-infected long-term surviving hemophiliacs.

Approximately 30% of patients with hemophilia in Japan were infected with human immunodeficiency virus (HIV) in early 1980s through contaminated blood products. In 1995, a cohort of HIV-infected, asymptomatic patients with hemophilia was set up for follow-up study. Although the patients met the criteria for long-term non-progressor (LTNP) at the entry to the cohort, some of them later developed lymphopenia during five more years of observation.

Neuroblastoma detected by mass screening: the Tumor Board's role in its treatment.

Japan has a nationwide mass-screening program for neuroblastoma in 6-month-old infants. Neuroblastoma can regress spontaneously, and some institutions observe selected cases. We evaluated the management of screened neuroblastoma at our hospital since 1997 when an observation program was introduced.

[Continuous infusion of recombinant activated factor VII during and after elbow arthroplasty in a hemophilia A patient with inhibitors].

Recombinant activated factor VII (rFVIIa) is a recently added new agent for the treatment of hemophiliacs with inhibitors. A major drawback to the use of rFVIIa is its short half-life, necessitating frequent and intermittent bolus injections. Continuous infusion of rFVIIa has been reported as a feasible, convenient, safe and cost-effective alternative to intermittent bolus injections.