摘要:
Genetic markers are disclosed with a useful association with boar taint that can be used for screening and selection of pigs for those with more favorable boar taint characteristics associated with androstenone/skatole metabolism. Specific polymorphic alleles of the 3αHSD, 3βHSD, CYP17A1, CYP2A, CYP2E1, CYTB5, BAC-CT and/or SULT1A1 genes are disclosed for tests to screen pigs to determine those more likely to produce desired boar taint traits.
摘要:
A system and method for determining the impedance of a telephone transmission line are disclosed. A test signal is transmitted through a telephone switch to the telephone line and corresponding echo signals are monitored. The test and echo signals are correlated to derive an impulse response. A transfer function for the system is calculated from the impulse response. Then, a transfer function for the transmission line is derived using the system transfer function and the transfer function of the telephone switch. Finally, the transmission line impedance is calculated from the transmission line transfer function. Once the transmission line impedance is known, an impedance matching circuit for the telephone switch can be modified to match the transmission line and the switch.
摘要:
A housing for a luminaire is disclosed. The housing can include a housing top and a housing body coupled to each other. The housing body can include at least one wall that is bendable to form a cavity. The housing body can also include at least one first housing body coupling feature disposed on a first end, and at least one second complementary housing body coupling feature disposed on the first end adjacent to the at least one first housing body coupling feature. The housing body can further include at least one second housing body coupling feature disposed on a second end, and at least one first complementary housing body coupling feature disposed on the second end adjacent to the at least one second housing body coupling feature.
摘要:
A retention structure for retaining a recessed lighting fixture behind a ceiling includes an attachment structure that has a first wall and a second wall. The attachment structure is designed to be attached to a housing of a recessed light fixture. The retention structure further includes a screw attached to the first wall of the attachment structure and to the second wall of the attachment structure. The retention structure also includes a pawl attached to the threaded screw. The pawl is rotatable along with the threaded screw. The pawl is also axially movable along the threaded screw between the first wall of the attachment structure and the second wall of the attachment structure.
摘要:
A retention structure for retaining a recessed lighting fixture behind a ceiling includes an attachment structure that has a first wall and a second wall. The attachment structure is designed to be attached to a housing of a recessed light fixture. The retention structure further includes a screw attached to the first wall of the attachment structure and to the second wall of the attachment structure. The retention structure also includes a pawl attached to the threaded screw. The pawl is rotatable along with the threaded screw. The pawl is also axially movable along the threaded screw between the first wall of the attachment structure and the second wall of the attachment structure.
摘要:
Disclosed herein are novel alleles characterized by polymorphisms in sulfotransferase genes. The alleles may be used to genetically type animals for sulfotransferase activity. In a preferred embodiment, the alleles may be used as markers for boar taint in pigs. Methods for identifying such markers, and methods of screening animals to determine those more likely to produce desired characteristics and preferably selecting those animals for future breeding purposes are also disclosed.
摘要:
A lighting fixture structure for a recessed lighting fixture includes a housing and a junction box. The lighting fixture structure further includes an arm. The arm is attached to the housing and to the junction box. The arm is rotatably attached to the housing.
摘要:
An electrical device can have an associated wiring box for connecting the electrical device to an external electrical supply, for example to utility power. The wiring box can include an opening suitable for worker access, so that a worker can connect or disconnect the electrical device from electrical power. Wiring connectors can be rotatably mounted in the wiring box for making the electrical connection. The wiring connectors can be rotated to one orientation to enhance worker access through the opening, for example during installation, and to another orientation for long-term operation.
摘要:
A housing for a luminaire is disclosed. The housing can include a housing top and a housing body coupled to each other. The housing body can include at least one wall that is bendable to form a cavity. The housing body can also include at least one first housing body coupling feature disposed on a first end, and at least one second complementary housing body coupling feature disposed on the first end adjacent to the at least one first housing body coupling feature. The housing body can further include at least one second housing body coupling feature disposed on a second end, and at least one first complementary housing body coupling feature disposed on the second end adjacent to the at least one second housing body coupling feature.