摘要:
A method for biologically degradative-treating a chlorine-substituted ethylene comprising culturing a microorganism capable of producing an alkene monooxygenase in a medium containing a chlorine-substituted ethylene having 1 to 3 chlorine atoms and wherein said chlorine-substituted ethylene is oxidized to a corresponding epoxide. Chlorine-substituted ethylenes are degraded at high rate and efficiency by the oxidation using microorganisms.
摘要:
A phase shift unit provides a prescribed phase difference (π/2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit. A low-frequency signal f0 is superimposed on one of the optical signals. A signal of which phase is shifted by π/2 from the low-frequency signal f0 is superimposed on the other optical signal. A pair of the optical signals is coupled, and a part of which is converted into an electrical signal by a photodiode. 2f0 component contained in the electrical signal is extracted. Bias voltage provided to the phase shift unit is controlled by feedback control so that the 2f0 component becomes the minimum.
摘要:
An OADM in a wavelength division multiplexing transmission system includes a wavelength selection switch that selects a predetermined wavelength from a multiple optical signal obtained by multiplexing a phase modulated signal and an intensity modulated signal and outputs the selected wavelength signal to a predetermined output port. The wavelength selection switch has a different delay for each wavelength of the multiple optical signal. For example, the wavelength selection switch includes a mirror array. Optical paths from the surfaces of mirrors arranged on the mirror array to the diffraction grating are different in the case of adjacent mirrors.
摘要:
Disclosed is a method of copper leaching without reducing the growth of iron-oxidizing bacterium and the iron-oxidizing capacity when leaching copper from a copper sulfide ore with the use of a sulfuric acid solution to which iron-oxidizing bacteria and silver have been added. Also disclosed is a method of leaching copper from a copper sulfide ore, including adding a naturally occurring nitrogen-containing organic component to a leaching solution upon copper leaching from a copper sulfide ore with the use of, as the leaching solution, a sulfuric acid solution to which iron-oxidizing bacteria and silver have been added is provided.
摘要:
Even when the optical axis is offset in a rigid endoscope, the actual optical axis position is measured in advance, and surgery navigation can be performed by using the actual optical axis position.A surgery assistance system comprising 3-dimensional shape measurement means for measuring a 3-dimensional surface shape of a patient; and a rigid endoscope (11) to be inserted into the body of the patient; wherein the rigid endoscope has a position-orientation detection marker (12) measurable by the 3-dimensional shape measurement means; 3-dimensional tomographical data of the patient imaged in advance and a position relationship relating to the actual optical axis position of the rigid endoscope measured in advance are stored in the computation means; 3-dimensional tomographical data and the 3-dimensional surface shape of the patient measured by the 3-dimensional shape measurement means are aligned; the position, orientation, and optical axis of the rigid endoscope are computed on the basis of the position-orientation detection marker measured by the 3-dimensional shape measurement means and the stored actual optical axis position of the rigid endoscope; and the aligned 3-dimensional tomographical data, the optical axis of the rigid endoscope, and the intersection of the optical axis and the tissue wall are displayed.
摘要:
Rental business of content data is adequately performed while preventing a improper use of rights or the like by a user. Rental user key data Kuren1-3, and rental content key data Kuren1-3 includes management metadata M1-M3 and M1′-M3′, respectively. The management metadata includes data use termination date/time indicating an expiration date or the like.
摘要:
A delay interferometer and a demodulator including the delay interferometer and a balanced photodetector are provided. A half mirror splits an optical signal into first and second split beams of light which travel on first and second optical paths, respectively. A first reflector being disposed on the first optical path reflects the first split beam of light toward the half mirror. The second reflector being disposed on the second optical path reflects the second split beam of light toward the half mirror. At least one phase compensator being disposed between the half mirror and at least one of the first and second reflectors includes a medium that exhibits thermooptic effect and has temperature dependency of refractive index. The half mirror couples the first and second split beams of light to generate at least first and second coupled beams of light.
摘要:
The optical node connects N networks to each other (where N is an integer larger than one). Each of the N networks respectively includes a first transmission path and a second transmission path. The optical node includes a switching unit that connects the first transmission path of one network of the N networks to other (N−1) networks; a failure detector that detects failure in the first transmission path of the network; and a control unit that causes the switching unit to connect the second transmission path of the network to the other (N−1) networks when the failure is detected.