摘要:
Antibodies which neutralize botulinum neurotoxin serotype F are produced using biologically active botulinum neurotoxin instead of toxoid for immunization and exploiting the importance of cross reaction between various serotypes to obtain immune responses, or monoclonal antibodies, to additional serotypes of interest. Methods of preparation and uses of the neutralizing botulinum neurotoxin antibodies are described.
摘要:
The invention is a mechanism for removing a liquid such as oil or transmission fluid from an enclosed cavity of a motor vehicle. The invention includes a tube slidable through the sealing plug of the compartment and a flexible bladder into which one end of the tube can be fit. A shut-off valve in the tube controls the flow of liquid from the compartment to the bladder. The invention optionally includes a simple hand operated pump in the tube and a device to prevent the tube from unintentionally being removed from the plug.
摘要:
A method of preparing alloy of a transition metal and lanthanide comprising the steps of alloying a transition metal, boron, at least one lower-weight lanthanide having none or few stable compounds with iron, optionally one or more higher-weight lanthanides, a glass former, and optionally the pseudo lanthanide, yttrium; forming an amorphous or nearly amorphous metastable microstructure in the alloy; and heating the amorphous alloy to form a polycrystalline, multiphase, fine-grain single-domain structure.
摘要:
A microwave transistor oscillator/doubler comprising a Field-Effect Transistor with Terminals G, D and S in combination with a coupling network connected to the terminals G, D and S and composed of microstrip lines with lengths equal to a quarter wavelength at the second harmonic of a fundamental frequency. The doubler further comprises a bias circuit for supplying appropriate voltages to the FET terminals, and an impedance coupler for coupling from the FET D-S terminals to a waveguide load. The coupling network optimizes feedback at the second harmonic between the D-S and G-S ports of the FET to prevent destructive harmonic feedback interaction with the desired signal while providing optimum conditions for feedback at the fundamental frequency. The bias circuit is connected to the coupling network and includes a second network of transmission line elements of lengths equal to a quarter wavelength at the fundamental in order to prevent dissipation of the fundamental frequency therein.
摘要:
Susceptor formed with a base and with a pedestal made of materials respectively having low and high radio-frequency (r-f) absorptivities. Mercury is carried in a cavity in the base and a semiconductor substrate is carried in a cavity in the pedestal. When an r-f field is applied to the susceptor, the substrate is heated to a higher temperature than the mercury.
摘要:
An amphibious vehicle is disclosed including at least one outrigger pontoon member connected with the vehicle body for pivotal movement about a horizontal longitudinal pivot axis between retracted and laterally extended positions relative to the vehicle body. The pivot axis is adjacent the bottom portion of the vehicle body, seal means being provided for sealing the space between the vehicle body and the pontoon member.
摘要:
A vacuum tube device is disclosed, together with a circuit for operation thereof, which is employed to detect a pulse signal in noise in real time. Two embodiments of a cathode structure for the device are disclosed as well as two embodiments of an anode structure.
摘要:
Alternately repeated layers of metal epitaxy on semiconductor substrates and semiconductor epitaxy on metal substrates are grown in an ultra-high vacuum evaporation system by first depositing the metal film on the clean surface of the semiconductor substrate over the temperature range between room temperature and 400*C; and then depositing the semiconductor film on the clean surface of the metal over the temperature range between 500*C and 600*C.
摘要:
Porous combustible cartridge cases containing nitrocellulose, reinforcing fibers and a resinous binder, are rendered resistant to water and oil by providing the exterior surface with a consumable coating consisting essentially of RDX, HMX or PETN dispersed in a polymeric resin, e.g., an alkyl methacrylate, which is capable of thermally depolymerizing to the monomer.
摘要:
A portable fluoroscope utilizes a hingedly mounted, light shielded, fluorescent screen positioned in front of a lookthrough radiation shield. A leaded glass eyepiece positioned within the radiation shield is used as a radiation resistant viewing port to observe the image produced on the fluorescent screen by an irradiated object. The use of a relatively small piece of lead-glass in the viewing port of the present device in comparison to the use of a lead-glass plate the size of the fluorrescent screen, which is immediately adjacent thereto in the prior art, has resulted in a substantial reduction in weight and cost for the same degree of radiation protection.