antioxidant activities protect the cell against oxidative agents that are constant metabolic by-products. the aim of this study was to investigate the relationship between harvesting time of thymus transcaspicus and its antioxidant activities. the plant samples were harvested 5 times in different growth phases from 17 april to 22 july 2008, and its antioxidant activity was studied using the fer...

Studies on harvesting robots with manipulator were started with the tomato fruit harvesting robot since 30 years ago by Prof. Kawamura, Kyoto University [1]. The robot consisted of a 5 DOF manipulator, a harvesting end-effector, a color TV camera which was used for stereo vision, and a battery car for traveling in the ridges as shown in Figure 1. Following the harvesting robot, the robotic tech...

When exposed to excess light illumination photosynthetic organisms switch into a photoprotective quenched state where the excess energy is safely dissipated as heat. When these processes are investigated by means of ultrafast spectroscopy, the experimentalist is faced with the unnatural process of singlet–singlet annihilation which often makes the interpretation of the results very complicated....

The light-harvesting antenna of photosystem II (PSII) has the ability to switch rapidly between a state of efficient light use and one in which excess excitation energy is harmlessly dissipated as heat, a process known as qE. We investigated the single-molecule fluorescence intermittency of the main component of the PSII antenna (LHCII) under conditions that mimic efficient use of light or qE, ...

Single-molecule spectroscopy was employed to elucidate the fluorescence spectral heterogeneity and dynamics of individual, immobilized trimeric complexes of the main light-harvesting complex of plants in solution near room temperature. Rapid reversible spectral shifts between various emitting states, each of which was quasi-stable for seconds to tens of seconds, were observed for a fraction of ...