An activity table is made from a plurality of stackable cots and a top surface which is placed on the uppermost cot. The activity table may clamp onto particular components of the formed cots. The top surface applies as a cover on to the top of the stacked cots, and this surface may also include walls to define a basin which may hold water, toys, or even an infant. The top surface of the cots may also include other indicia, such as to form a game board, or the like. The activity boards are remov...

A multi-activity complex incorporates a plurality of activity floors, each of which has an associated playing surface and is selectively movable between a storage position, located below an event staging or activity area, and an in-use position located in the activity area. A system is provided for alternatively shifting the activity floors between the respective storage and in-use positions. The shifting system includes a lift assembly for vertically moving the activity floors into and out of t...

Apparatus is provided for measuring the effect of psychostimulants upon the activity of laboratory animals. The movement of an animal within a cage is measured by applying a voltage gradient to insulated segments of the cage floor. The animal, in moving across the floor, intermittently contacts adjacent floor segments of different polarity which results in the flow of an interrupted low-amperage current through the animal's body. The current is amplified and the pulses are counted; the number of...

An activity detecting means for detecting the movement of an animate object which includes a permanent magnet attached to the object. A pickup coil is provided around the area of movement of the object so that movements of the magnet induce a voltage in the coil. The output of the coil is delivered to circuit means which generates pulses when receiving the signal from the coil. An alarm means is operated by the pulses to provide an alarm signal which flashes off and on with each pulse received, ...

An apparatus for measuring the ion activity of a solution in which the ion sensitive barrier of the apparatus comprises a unitary membrane assembly in which an organic sensing solution is held between two hydrophilic membranes, preferably cellophane and cellulose acetate, respectively. Means are provided for replaceably mounting the membrane assembly in a sample flow cell which permits sample solution to flow past the cellophane membrane of the assembly and an electrolyte solution to contact the...

Method and apparatus for quantitating enzyme activity in blood and other fluids, using a spot test technique. The test utilizes enzyme standards freeze-dried in absorbent discs held under a membrane filter. Other discs above the filter contain substrate, cofactors, and indicators. The spot test plates are entirely self-contained, requiring neither instrumentation nor measurement of fluid volumes, and the test can be carried out under any ambient conditions. The test is particularly applicable to...

A device for measuring an activity of cupric ions comprises a selective electrode and a reference electrode immersed in a solution containing cupric ions, said selective electrode including a cuprous sulfide sintered plate having a lead connected to one surface thereof, whereby only another surface contacts with said solution.

Synthesis of a material with juvenile hormone activity by reacting crude or purified farnesoic acid with alcoholic hydrogen chloride wherein the alcohol is selected from the group consisting of ethanol, methanol, n-propanol and n-pentanol. Various comparisons are shown with other related compounds and an exemplary list of insects sensitive to the material is set forth.

An apparatus for indication of moving activity of animals which are disposed in closed space in which at least one of the walls is provided with a number of small capacitor plates which form at least one capacitor in a balanced bridge. When the animals move the dielectric constant of this capacitor is affected and an unbalance voltage is obtained in the bridge. The variations of this voltage are indicated in an indicator connected to the bridge via a derivating network.

An untriakontapeptide having significant opiate agonist activity has been isolated from camel pituitary glands. The structure of this peptide has been determined and this peptide was then synthesized utilizing solid phase peptide synthesis. Both natural and synthetic material show identical physical and biological properties.