Abstract: Apparatus, systems and methods are provided that include a repository for receipt of an object and a mechanism for shielding from view the object. The repository may take the form of a mailbox and the object may be a letter, e.g., a letter addressed to Santa. The shielding mechanism is actuated by a trigger that is associated with the repository and, in exemplary embodiments, is triggered by an activity normally associated with the repository, e.g., raising a flag on a mailbox. The trigger actuation may interact with an electronic control system, a mechanical control system, or a combination thereof.

Abstract: Apparatus, systems and methods are provided that include a repository for receipt of an object and a mechanism for shielding from view the object. The repository may take the form of a mailbox and the object may be a letter, e.g., a letter addressed to Santa. The shielding mechanism is actuated by a trigger that is associated with the repository and, in exemplary embodiments, is triggered by an activity normally associated with the repository, e.g., raising a flag on a mailbox. The trigger actuation may interact with an electronic control system, a mechanical control system, or a combination thereof.

Abstract: Apparatus, systems and methods are provided that include a repository for receipt of an object and a mechanism for shielding from view the object. The repository may take the form of a mailbox and the object may be a letter, e.g., a letter addressed to Santa. The shielding mechanism is actuated by a trigger that is associated with the repository and, in exemplary embodiments, is triggered by an activity normally associated with the repository, e.g., raising a flag on a mailbox. The trigger actuation may interact with an electronic control system, a mechanical control system, or a combination thereof.

Abstract: Apparatus, systems and methods are provided that include a repository for receipt of an object and a mechanism for shielding from view the object. The repository may take the form of a mailbox and the object may be a letter, e.g., a letter addressed to Santa. The shielding mechanism is actuated by a trigger that is associated with the repository and, in exemplary embodiments, is triggered by an activity normally associated with the repository, e.g., raising a flag on a mailbox. The trigger actuation may interact with an electronic control system, a mechanical control system, or a combination thereof.

Abstract: The invention provides the use of a lactic acid bacterium and optionally a Bacillus for producing a silage which may be advantageously used for the production of biogas. The invention also provides the use of a lactic acid bacterium and optionally a Bacillus for producing biogas.

Abstract: Apparatus for powder coating various types of parts using different powder coating techniques. The apparatus includes a powder coating hood in which the coating operation takes place and a powder collection booth connected to the hood for drawing air and excess powder out of the hood. An air circulation system is provided in the collection booth for drawing excess air and powder from the hood. An air flow regulator is provided to adjust the draw of air and powder between low and high amounts. A low amount is, for example, useful for electrostatic fluidized bed coating, while a higher amount may be useful for spray coating techniques.

Abstract: Zipper chain is continuously electrostatically coated with powder to produce good coverage of the teeth, even upon its more obscured surfaces. The web is substantially uncoated, and is protected against deleterious heat effects.