A narrow-band, extreme-ultraviolet laser source is developed that has continuous tunability in the range 96– 97.5 nm and a bandwidth below 250 MHz. The versatility of the radiation source is demonstrated in two applications. Accurate values for lifetimes of highly excited molecular quantum states are determined from line-broadening measurements in three electronic states of CO: W1P, v 5 0 state...

Lichen nitidus (LN) is a rare, chronic, and usually asymptomatic inflammatory disease characterized by numerous small, well-defined, flesh-colored papules.1 The lesions tend to be localized, and most commonly affect the abdomen, chest, genitalia, flexor areas of the arms, or backs of the hands, but can become generalized in rare cases. As LN is usually asymptomatic and tends to resolve spontane...

Nanostructured As2Ni3O8 samples were synthesized via facile solid-state reactions at 850 and 950 °C for 8h using As2O3, Ni(CH3COO)2.2H2O and Ni(NO3)2.6H2O raw materials. The synthesized nanomaterials were characterized by powder X-ray diffraction (PXRD) technique and fourier-transform infrared (FTIR) spectroscopy. The rietveld analyses showed that the obtained materials were crystallized well i...

OBJECTIVE This study attempts to objectively measure physiological changes in transepidermal water loss (TEWL), an indicator of skin barrier function and laser Doppler perfusion index (LDPI) an indicator of skin vascularity, of psoriatic skin lesions following treatment to narrow-band ultraviolet B (UVB) phototherapy using the psoriasis severity (PS) score as a measurement of clinical photother...

Tunable, narrowband extreme ultraviolet radiation in the range 90.5-95 nm with only limited intensity variations is produced by frequency-tripling ultraviolet light from a frequency-doubled dye laser in a gas-jet of xenon, Acetylene gas is found to be an efficient medium for thirdharmonic generation in this wavelength range as well. The extreme-ultraviolet radiation is applied in a spectroscopi...

The effects of eight different narrow band-emitting fluorescent lamps (371-750 nm) and four commercial broad band-emitting fluorescent sources upon growth and shoot initiation in tobacco callus (Nicotiana tabacum var. Wisconsin 38) have been characterized. Wavelength and intensity are equally important parameters in determining morphogenic changes. Near ultraviolet light (371 nm) was found to s...