摘要:
A nonlinear Yb:YAB laser material is disclosed. The material is capable of generating fundamental o-polarized first wavelength laser light and frequency doubled e-polarized second wavelength laser light, the material being oriented for type 1 phase matching of the first wavelength laser light. Also disclosed is a laser system. The system comprises a pumping light source emitting a pumping beam of light, a laser cavity having an input coupler operatively disposed with respect to the light source so as to couple the pumping beam of light into the cavity, and a nonlinear Yb:YAB laser material capable of lasing in response to a pumping beam of light thereby generating fundamental o-polarized first wavelength laser light and frequency doubled e-polarized second wavelength laser light, the material being oriented for type 1 phase matching of the first wavelength laser light, the first wavelength laser light being in the range of 1020-1100 nm and the second wavelength laser light being in the range of 510-550 nm. The input coupler comprises a reflector to at least partially reflect the first wavelength laser light and the second wavelength laser light into the cavity, and the laser cavity further includes an output coupler for coupling and outputting at least the second wavelength laser light from the cavity as an output laser beam. Also disclosed are methods of providing an output laser beam and methods of using the beam.
摘要:
A photoacoustic catheter includes an elongated catheter body and a housing positioned near a distal end of the elongated catheter body. A length of multimode fiber extends through the elongated catheter body and has a distal end that is beveled at about 45° relative to a longitudinal axis of the multimode fiber and is positioned in the housing. An ultrasonic transducer, electrically connected to an electrical wire extending along the elongated catheter body, is positioned within the housing. A mirror element is also positioned within the housing and includes a mirror surface beveled at about 45° relative to the longitudinal axis of the multimode fiber. The catheter is operable to deliver an optical wave through the multimode fiber and to deliver an ultrasonic wave collinearly from the housing and out of an aperture of the housing to obtain optical data and ultrasonic data within a mammalian luminal organ.
摘要:
A method for switching video resolution includes: confirming that a video sender and a video receiver have established a video communication connection, and obtaining an initial resolution of the video sender; confirming that bandwidth of the video communication connection and hardware of the video sender meet preset conditions, and switching the initial resolution of the video sender to a target resolution, in which the target resolution is higher than the initial resolution. After establishing video communication connections between terminals, when there are available bandwidth and hardware of the terminal using video communication, the resolution of terminal may be switched to provide a more clear video communication for terminal user, and guarantee smooth switching of resolution.
摘要:
A method provides space-time adaptive processing (STAP) for target detection using adaptive matched filters (AMF). A generalized likelihood ratio test (GLRT) is determined where spatial and temporal correlation matrices Q and A are assumed. Then, the correlation matrices A and Q are replaced with maximum likelihood (ML) estimates obtained only from training signals subject to a persymmetric constraint.
摘要:
A method for detecting a target in a non-homogeneous environment using a space-time adaptive processing of a radar signal includes normalizing training data of the non-homogeneous environment to produce normalized training data; determining a normalized sample covariance matrix representing the normalized training data; tracking a subspace represented by the normalized sample covariance matrix to produce a clutter subspace matrix; determining a test statistic representing a likelihood of a presence of the target in the radar signal based on the clutter subspace matrix and a steering vector; and comparing the test statistic with a threshold to detect the target.
摘要:
The present invention relates to a peptide derivative represented by the general formula (I) or a salt thereof: Z-(CH2)n—CO—NH-Leu-Ile-Gly-AA1-AA2-CO—R (I) wherein Z represents an aryl group which may or may not have a substituent or a heteroaryl group which may or may not have a substituent; n represents 0, 1 or 2: AA1-AA2 represents Lys-Val or Arg-Leu; and R represents —OH or —NH2, and relates to a pharmaceutical composition comprising a peptide derivative represented by the general formula (I) or a salt thereof, and a pharmaceutically acceptable carrier thereof. The peptide derivative is useful as a prophylactic and therapeutic agent of dysfunction of masticatory, dysphagia, dysgeusia, ozostomia, intra-oral cavity dysphoria, intra-oral cavity infections, intra-oral cavity inflammations, dry eye, ectocornea detachment, keratitis, corneal ulcer, conjunctivitis, stomach ulcer, duodenal ulcer, gastritis, diarrhea, enteritis or Sjogren's syndrome.
摘要:
A method for switching video resolution includes: confirming that a video sender and a video receiver have established a video communication connection, and obtaining an initial resolution of the video sender; confirming that bandwidth of the video communication connection and hardware of the video sender meet preset conditions, and switching the initial resolution of the video sender to a target resolution, in which the target resolution is higher than the initial resolution. After establishing video communication connections between terminals, when there are available bandwidth and hardware of the terminal using video communication, the resolution of terminal may be switched to provide a more clear video communication for terminal user, and guarantee smooth switching of resolution.
摘要:
A microsecond-scale stimulated Raman spectroscopic imaging system having a light source, such as a laser output that provides two femtosecond laser beams and a modulator to modulate the laser intensity at frequency between about 1 and about 100 megahertz. The system can further include a medium that chirps the two femtosecond beams to generate a spectral focus in a specimen, and a galvo mirror or resonant mirror pair to scan the two femtosecond beams in two dimension on the specimen. An objective lens can focus the two laser beams into a specimen or sample and a resonant delay scanner configured to produce an optical delay to the pair of chirped beams in said specimen and a tuned amplifier or lock-in amplifier can be used to extract the stimulated Raman-signal shift at the aforementioned modulation frequency.
摘要:
A method is disclosed for folder transfer based on instant messaging (IM). The method includes receiving from an IM sender a transfer request for transferring a folder-to-be-transferred. The folder-to-be-transferred may contain a plurality of files. The method also includes receiving from the IM sender folder information of the folder-to-be-transferred, determining a receiving folder corresponding to the folder-to-be-transferred on a predetermined storage location, and determining files-to-be-transferred from the plurality of files corresponding to the folder-to-be-transferred based on the folder information. Further, the method includes sequentially sending one transfer request for each of the files-to-be-transferred to the IM sender through a same network connection, receiving the files-to-be-transferred sent sequentially by the IM sender through the same network connection, and storing the received files-to-be-transferred in the receiving folder.
摘要:
The present invention relates to a peptide derivative represented by the general formula (I) or a salt thereof: Z-(CH2)n—CO—NH-Leu-Ile-Gly-AA1-AA2-CO—R (I) wherein Z represents an aryl group which may or may not have a substituent or a heteroaryl group which may or may not have a substituent; n represents 0, 1 or 2: AA1-AA2 represents Lys-Val or Arg-Leu; and R represents —OH or —NH2, and relates to a pharmaceutical composition comprising a peptide derivative represented by the general formula (I) or a salt thereof, and a pharmaceutically acceptable carrier thereof.