Kohei M. Itoh

Learn More
We isolated three different repetitive DNA sequences from B. campestris and determined their nucleotide sequences. In order to analyze organization of these repetitive sequences in Brassica, Southern blot hybridization and in situ hybridization with metaphase chromosomes were performed. The sequence cloned in the plasmid pCS1 represented a middle repetitive(More)
In order to study gene silencing in a monocot system we introduced a waxy (Wx) gene into rice. In the pollen grain of the transgenic wild-type plants, two types of Wx gene silencing were observed: Type I in which all the pollen grains showed the mutant (wx) phenotype, and Type II in which 50% of the pollen grains showed the wx phenotype. Analysis of Wx gene(More)
We evaluate the performance of quantum arithmetic algorithms run on a distributed quantum computer (a quantum multicomputer). We vary the node capacity and I/O capabilities, and the network topology. The tradeoff of choosing between gates executed remotely, through “teleported gates” on entangled pairs of qubits (telegate), versus exchanging the(More)
The quantum superposition principle states that an entity can exist in two different states simultaneously, counter to our 'classical' intuition. Is it possible to understand a given system's behaviour without such a concept? A test designed by Leggett and Garg can rule out this possibility. The test, originally intended for macroscopic objects, has been(More)
We evaluate the performance of quantum arithmetic algorithms run on a distributed quantum computer (a quantum multicomputer). We vary the node capacity and I/O capabilities, and the network topology. The tradeoff of choosing between gates executed remotely, through "teleported gates" on entangled pairs of qubits (telegate), versus exchanging the relevant(More)
We show how the execution time of algorithms on quantum computers depends on the architecture of the quantum computer, the choice of algorithms (including subroutines such as arithmetic), and the “clock speed” of the quantum computer. The primary architectural features of interest are the ability to execute multiple gates concurrently, the number of(More)
We report 29Si NMR study on a single crystal of the heavy-fermion superconductor CeIrSi3 without an inversion symmetry along the c axis. The 29Si Knight-shift measurements under pressure have revealed that the spin susceptibility for the ab plane decreases slightly below T(c), whereas along the c axis it does not change at all. The result can be accounted(More)
Endocrine control of osmoregulation is essential for teleosts to adapt to various aquatic environments. Prolactin (PRL) is known as a fundamental endocrine factor for hyperosmoregulation in teleost fishes, acting on ionocytes in the gills to maintain ion concentrations of body fluid within narrow physiological ranges in freshwater conditions. Cortisol is(More)
We have previously reported production of somatic hybrids between B. oleracea and B. campestris by fusion of B. oleracea protoplasts with X-irradiated B. campestris protoplasts, in order to transfer a part of the B. campestris genome into B. Oleracea. Our previous analysis of morphology, chromosome number, and isozyme patterns of the hybrids suggested that(More)