A tool for cleaning a structure is provided. The tool includes an extension pole having a length, the extension pole including three or more cylindrical segments having different respective diameters, the segments being arranged in a telescoping configuration to permit the length of the extension pole to be adjusted to a desired length; locking nuts structured to releasably lock adjacent ones of the segments to one another; a grip provided on a most proximal one of the segments; and an attachment member provided on a most distal one of the segments, the attachment member being structured to removably attach at least one cleaning accessory.

A method and system for self-contained growth and harvesting of plant and animal foodstuffs and energy generation for terrestrial and non-terrestrial uses. The system can be self-contained and sealed from an ambient atmosphere wherein sufficient oxygen and carbon dioxide levels are maintained (bio-regenerative) to support human life. The system and method may utilize aquaculture and hydroponic plant growth with a digester for converting waste into nutrients. Water may circulate among the digester, aquaculture tanks and hydroponic growth tanks. The method may be scalable to support varying quantities of human life. The system and method may generate energy and consume greater quantities of carbon dioxide than generated. The system may be energy self-sufficient utilizing solar, wind or other energy sources such as generated methane gas.

A scraper for use with aquariums incorporates a body having a slot adapted to removably receive a scraping element and a handle extending form the body. The handle has at least two removable and adjustable links.

A scraper for use with aquariums incorporates a body having a slot adapted to removably receive a scraping element and a handle extending form the body. The handle has at least two removable and adjustable links.

Methods are proposed to define UE behavior for performing synchronization signal block (SSB) based radio link monitoring (RLM) and channel state information reference signal (CSI-RS) based RLM. In a first novel aspect, if CSI-RS based RLM-RS is not QCLed to any CORESET, then UE determines that CSI-RS RLM configuration is error and does not perform RLM accordingly. In a second novel aspect, SSB for RLM and RLM CSI-RS resources are configured with different numerologies. UE perform SSB based RLM and CSI-RS based RLM based on whether the SSB and CSI-RS resources are TDMed configured by the network. In a third novel aspect, when multiple SMTC configurations are configured to UE, UE determines an SMTC period and whether SMTC and RLM-RS are overlapped for the purpose of RLM evaluation period determination.

An abundance of specific species of phytoplankton in a phytoplankton group in which a plurality of kinds coexists is calculated in a simple manner. Based on a reference sample intensity ratio r.sub.0, a reference sample total fluorescence intensity I.sub.0, and an existing quantity K.sub.0 of specific species of phytoplankton, an intensity ratio r.sub.d of other species of plankton is calculated. An analysis sample that is expected to have similarity with the reference sample is irradiated with the excitation light, an intensity of fluorescence emitted from the analysis sample is measured in each of wavelength bands A and B, and an intensity ratio r is calculated. A total fluorescence intensity I is measured, and an existing quantity K of the specific species of the phytoplankton is calculated based on the intensity ratio r.sub.d of other species of plankton, the intensity ratio r, and the total fluorescence intensity I.

A system for the polishing treatment of inner walls of aquatic enclosures includes at least one tank of abrasive mixture and at least one surface treatment head which communicates fluidically with the tank of abrasive mixture, a mover allowing the treatment head to be moved along the wall to be treated, and a supply allowing the treatment head to be supplied with a substantially continuous flow of abrasive mixture.

A system for the polishing treatment of inner walls of aquatic enclosures includes at least one tank of abrasive mixture and at least one surface treatment head which communicates fluidically with the tank of abrasive mixture, a mover allowing the treatment head to be moved along the wall to be treated, and a supply allowing the treatment head to be supplied with a substantially continuous flow of abrasive mixture.

A cleaning apparatus has a first magnetic board device and a second magnetic board device. The first magnetic board device has a first plate body, a first magnet, a first fastening member and a first cleaning pad. The first plate body and the first cleaning pad are attached to each other via the first fastening member. The first magnet is disposed on the first plate body. The second magnetic board device has a second plate body, a second magnet, a second fastening member and a second cleaning pad. The second plate body and the second cleaning pad are attached to each other via the second fastening member. The second magnet is disposed on the second plate body. The first magnet and the second magnet are magnetically attracted to each other, such that the first cleaning pad and the second cleaning pad are located adjacent to and facing towards each other.

A cleaning apparatus has a first magnetic board device and a second magnetic board device. The first magnetic board device has a first plate body, a first magnet, a first fastening member and a first cleaning pad. The first plate body and the first cleaning pad are attached to each other via the first fastening member. The first magnet is disposed on the first plate body. The second magnetic board device has a second plate body, a second magnet, a second fastening member and a second cleaning pad. The second plate body and the second cleaning pad are attached to each other via the second fastening member. The second magnet is disposed on the second plate body. The first magnet and the second magnet are magnetically attracted to each other, such that the first cleaning pad and the second cleaning pad are located adjacent to and facing towards each other.