Mass-analyzed velocity map imaging of doubly charged photofragments from C70.

The velocity distributions of the fragments produced by dissociative photoionization of C(70) have been measured at several photon energies in the extreme UV region, by using a flight-time resolved velocity map imaging (VMI) technique combined with a high-temperature molecular beam and synchrotron radiation. Average kinetic energy release was estimated for the six reaction steps of consecutive C(2) emission, starting from C(70)(2+) → C(68)(2+) + C(2) to C(60)(2+)→ C(58)(2+) + C(2). The total kinetic energy generated in each step shows a general tendency to increase with increasing hν, except for the first and fifth steps.

Communication: Mass-analyzed velocity map imaging of thermal photofragments from C60.

The velocity distributions of the fragments produced by dissociative photoionization of C(60) have been measured in the extreme UV region for the first time, by using a flight-time resolved velocity map imaging technique combined with a high-temperature molecular beam and synchrotron radiation. Values of the average kinetic energy release were estimated at six different photon energies with respect to five reaction steps of sequential C(2) ejection, starting from C(60)(2+)-->C(58)(2+)+C(2) to C(52)(2+)-->C(50)(2+)+C(2). The translational temperatures of the fragment ions were found to be lower than those obtained by laser multiphoton absorption of C(60).

Manganese oxide nanoparticle-assisted laser desorption/ionization mass spectrometry for medical applications.

We prepared and characterized manganese oxide magnetic nanoparticles ( =5.6 nm) and developed nanoparticle-assited laser desorption/ionization (nano-PALDI) mass spectrometry. The nanoparticles had MnO and MnO cores conjugated with hydroxyl and amino groups, and showed paramagnetism at room temperature.

Photoabsorption cross section of C70 thin films from visible to vacuum ultraviolet.

Absolute photoabsorption cross sections of C(70) thin films were determined for hv values from 1.3 to 42 eV using photon attenuation. The spectrum showed a prominent peak of 1320 Mb at 21.

[Role of pharmaceutical company pharmacist in provision of drug information for cancer chemotherapy].

Recently, oxaliplatin(L-OHP)and irinotecan hydrochloride hydrate(CPT-11)have gained recognition as key drugs in the treatment of advanced colorectal cancer. In this article, we describe the results of a survey of medical institutions by pharmacists working at a pharmaceutical company. First, questions from medical institutions on L-OHP and CPT-11 were totaled and analyzed.