Abstract: Repellents that contain wax, oil and a repelling agent containing pepper are disclosed. Systems of repellents applied to a substrate to repel pests are disclosed. Methods of forming wax and pepper-containing repellents and methods of repelling pests that include applying wax-containing repellents to substrates are disclosed.

Abstract: Repellents that contain wax, oil and a repelling agent containing pepper are disclosed. Systems of repellents applied to a substrate to repel pests are disclosed. Methods of forming wax and pepper-containing repellents and methods of repelling pests that include applying wax-containing repellents to substrates are disclosed.

Abstract: A system and method for treating biological tissues with EM energy in the millimeter or microwave range utilizes a needle to position a source of EM radiation proximate the tissue to be treated. An absorption aid such as sterile water or saline may be used in an embodiment of the invention to aid in absorption of the incident EM energy in the area of interest. In an embodiment of the invention, the EM energy is tuned in wavelength and power to effect optimum treatment with minimal damage to surrounding tissues.

Abstract: Each of the recessed, confronting edges of adjacent concrete slabs in a roadway or the like has secured therein by a high density reinforced grout an elongated, rigid, prefabricated or precast edger strip, which also has an elongate recess in the edge thereof which faces on the space between the slabs. An elongate, semi-rigid, prefabricated cover member, which is generally T-shaped in cross section, has its upper, plate-shaped section positioned over the upper end of the space between the slabs so that opposite sides thereof project part way into the recesses in the edger strips, and has its downwardly projecting web section embedded in a sealing compound positioned between the confronting ends of the slabs. Remaining portions of the recesses in said edger strips are filled with a low modulus urethane compound.

Abstract: A capacitive proximity sensor utilizes a laminate capacitive sense head having no active components. The sense head is connected by a coaxial cable to a remotely located capacitive sensor circuit. An ac signal on the inner conductor of the coaxial cable is monitored by the sensor circuit to detect the proximity of an object to the sense head. The outer shield conductor of the coaxial cable is driven by the sensor circuit with an ac voltage corresponding to the ac signal on the inner conductor so as to minimize capacitive loading of the signal on the inner conductor. The laminate capacitive sense head has dielectric and conductive layers. The conductive layers form conductive patterns appropriately connected to the inner and outer conductors of the coaxial cable to provide sense electrode and guard shield functions in a very thin and versatile sensing structure.

Abstract: A low input-capacitance amplifier is disclosed for utilization in driving a guard shield of a high impedance signal. The high impedance signal is applied to a central conductor and to the input of a first unity gain amplifier. The output of that unity gain amplifier is applied to a second unity gain amplifier which is utilized to provide the guard signal to the shield conductor and also to provide electrical power to the first unity gain amplifier. A preferred embodiment of the present invention is utilized in conjunction with a highly sensitive capacitance proximity sensor which has a sense electrode remotely located from the associated electronic circuitry. By utilizing the output of the second unity gain amplifier as the power source for the first amplifier the input, the output and all electrical power receiving nodes are maintained at substantially identical electrical potentials thereby nullifying the loading effect of any parasitic capacitances at the input of the first amplifier circuitry.