摘要:
Biology-based processes for detecting toxic substances are provided. The processes comprise transforming cells with a vector comprising a polynucleotide which comprises a promoter of certain yeast gene operably linked to a polynucleotide encoding a marker protein; contacting the transformed cells to test sample; and detecting the expression of mRNA encoding the marker protein, thus detecting a toxic compound in the test sample.
摘要:
Biology-based processes for detecting toxic substances are provided. The processes comprise detecting mRNA that is expressed in the presence of toxic substances by a cell comprising a yeast gene as followed, or a gene that is homologous to the yeast genes and is derived from other species, wherein the mRNA corresponds to said yeast gene or said homologous gene thereof.
摘要:
The decentered optical system is configured by a first, a second and a third reflecting mirror disposed decentered, a focusing device, and a light receiver. The optical path is folded by the first, second, and third reflecting mirrors, aberration correction is carried out by a rotationally asymmetric reflecting surface, and an intermediate image is formed between the second and third reflecting mirrors and another reflecting mirror. The reflected light of the third reflecting mirror is made to form a substantially parallel light beam that forms an exit pupil. An image is formed on the light receiving surface by the focusing device. This decentered optical system is used in a light transmitting device, a light receiving device, and a light transmitting and receiving system, and carries out light tracking by detecting the position of the received light image.
摘要:
An image display apparatus capable of providing a clear observation image at a wide field angle by using an ocular optical system including an optical element having a minimal number of constituent surfaces. The apparatus includes an image display device (5) which displays an image, and an ocular optical system (4) which projects the image formed by the image display device (5) and leads the image to an observer's eyeball (3). The ocular optical system (4) has two surfaces, i.e. a first surface (11) and a second surface (12). A space formed by the two surfaces is filled with a medium having a refractive index larger than 1. At least one surface of the ocular optical system (4) is a non-rotationally symmetric aspherical surface decentered or tilted with respect to an observer's visual axis (2). The first surface (11) is a transmitting surface which serves as both an entrance surface for light rays emitted from the image display device (5) and an exit surface through which the light rays exit from the ocular optical system (4). The first surface (11) is convex toward the observer.
摘要:
A head-mounted image display apparatus capable of providing an observation image which is clear and has minimal distortion even at a wide field angle. Display light from an image display device (7) enters an optical system (8) through a first surface (3) serving as both transmitting and reflecting surfaces. The incident light is reflected by a third surface (5) and further reflected by the first surface (3). Then, the reflected light is reflected by a second surface 4 which is a decentered reflecting surface disposed on an optical axis (2) to face an exit pupil (1). The reflected light exits from the optical system (8) through the first surface (3), travels along the optical axis (2) and enters an observer's pupil placed at the exit pupil (1), without forming an intermediate image, thus forming a display image on the retina of the observer's eye. The first to third surfaces (3 to 5) are each formed from a plane-symmetry three-dimensional surface having no axis of rotational symmetry in nor out of the surface and having only one plane of symmetry.
摘要:
An image display apparatus corrected for distortions, particularly, a distortion which is asymmetric with respect to the center of the image field. The apparatus includes an image display device (8), and an ocular optical system (42) having a rotationally asymmetric optical surface or a decentered optical surface having a power. The apparatus satisfies the condition of .vertline.tan .THETA..sub.1 -tan .THETA..sub.2 .vertline./tan .THETA..sub.1
摘要翻译:校正了失真的图像显示装置,特别是相对于图像场的中心是不对称的失真。 该装置包括图像显示装置(8)和具有旋转非对称光学表面的眼睛光学系统(42)或具有电力的偏心光学表面。 该装置满足| tan THETA 1-tan THETA 2 | / tan THETA 1 <0.1的条件,其中THETA 1是从图像显示装置(8)上的任意点(44)发射的光线和 穿过出射光瞳(40)的中心和视轴(41),即连接观察者瞳孔的中心和图像显示装置(8)的投影图像的中心的直线,以及THETA 2是在视轴(41)和从与图像显示器的图像显示面的中心(43)的任意点(44)对称点的点(45)发射的光线之间形成的角度 装置(8)并穿过出射光瞳(40)的中心。
摘要:
A compact, wide-field, high-resolution, low-cost and easy-to-handle head- or face-mounted image display apparatus in which unwanted light is reduced without using a polarizing member or a louver optical system. The apparatus has an image display device (1) for displaying an image; an optical system (P) for projecting the image into an observer's eyeball as an enlarged image without effecting image formation on the way to the observer's eyeball; and a device for mounting and retaining the image display device (1) and the optical system (P) on an observer's head or face i The optical system (P) is a prism optical system which has at least four surfaces, that is, a back-coated mirror (3) of positive power which is disposed to face the image display device (1), an image display device-side surface (2) facing opposite to the back-coated mirror (3), an exit surface (5) closer to the observer's eyeball, and a transmitting surface (7) facing opposite to the exit surface (5), and which is made of a transparent medium having a refractive index larger than 1. The distance between the vertex of the back-coated mirror (3) and the vertex of the image display device-side surface (2) satisfies the condition of 0.8.ltoreq..theta..sub.min /.theta..sub.max .ltoreq.1.5.
摘要:
Biology-based processes for detecting toxic substances are provided. The processes comprise detecting mRNA that is expressed in the presence of toxic substances by a cell comprising a yeast gene as followed, or a gene that is homologous to the yeast genes and is derived from other species, wherein the mRNA corresponds to said yeast gene or said homologous gene thereof.
摘要:
There is provided a method of controlling a flow of a fluid in a microchannel, in which a part of a surface of the microchannel is a hydrophilization portion comprised of a substance being capable of decreasing a contact angle of water by irradiation of light, and the method comprises (1) irradiating the hydrophilization portion with light to decrease a contact angle of water of its surface (hydrophilization step), (2) releasing a substance for increasing a contact angle of water from a material for controlling a contact angle of water which contains the substance for increasing a contact angle of water which provides a surface having a contact angle of water larger than that of the hydrophilization portion after the decreasing of a contact angle of water (releasing step), and (3) bringing the released substance for increasing a contact angle of water into contact with the surface of the hydrophilization portion to adhere the substance for increasing a contact angle of water to the surface, thereby increasing the contact angle of water of the surface of the hydrophilization portion (hydrophobilization step). Also there is provided a valve utilizing the mentioned method. Thus, there are provided a fluid control method and valve which enable hydrophobilization and hydrophilization to be easily carried out in a noncontact manner in a microchannel without using a moving part.
摘要:
An optical system for use, for example, in a head-mounted image display apparatus, which provides an observation image that is clear and has minimal distortion even at a wide field angle. The head-mounted image display apparatus has an image display device (6), and an optical system (9) that leads an image formed by the image display device (6) to an observer's eyeball position (1), without forming an intermediate image, so that the image can be observed as a virtual image. The optical system (9) includes a reflecting surface (4) performing only one reflection, and one or two transmitting surfaces (3). The space between the reflecting surface (4) and the transmitting surfaces (3) is filled with a medium having a refractive index larger than 1. At least the reflecting surface (4) is a non-rotationally symmetric surface configuration having no axis of rotational symmetry in nor out of the surface.