Abstract: Various embodiments include methods and apparatus structured to increase efficiencies of a drilling operation. A drilling apparatus can be structured to include a hammer drill to move a hammer to impart impact force to a bit box in conjunction with a rotary drive shaft. The hammer drill can be arranged as a mechanical drive hammer capable of being applied to both fluid drilling and air drilling. Additional apparatus, systems, and methods are disclosed.

Abstract: Various embodiments include methods and apparatus structured to increase efficiencies of a drilling operation. A drilling apparatus can be structured to include a hammer drill to move a hammer to impart impact force to a bit box in conjunction with a rotary drive shaft. The hammer drill can be arranged as a mechanical drive hammer capable of being applied to both fluid drilling and air drilling. Additional apparatus, systems, and methods are disclosed.

Abstract: Location-based searches for venues for a mobile computing device. An application server system may determine search results in response to a search query, comprising a search location, received from the mobile computing device. The application server system determines, for each search query, whether the search location is within a threshold distance from a location of the mobile computing device. If within the threshold distance, the application server system transmits search result data comprising, for each example venue in the search results, a distance of the venue to the location of the mobile computing device. If not within the threshold distance, the application server system transmits search result data comprising, for each venue in the search results, a distance of the venue to the search location.

Abstract: Various embodiments are directed to systems and methods for checking in at a business with a mobile computing device. For example, the mobile computing device may receive via a data network, location information for a venue. The mobile computing device may also determine whether a location of the mobile computing device is available. Conditioned upon the location of the mobile computing device being available, the mobile computing device may determine whether the location of the mobile computing device is within a threshold distance of the venue. Conditioned upon the location of the mobile computing device being within the threshold distance of the venue, the mobile computing device may send a check-in message to a server. The check-in message may indicate that the user of the mobile computing device is at the venue.

Abstract: Various embodiments are directed to systems and methods for determining a neighborhood location of a person using a mobile computing device. The mobile computing device may transmit its location to an application server system. The application server system may perform at least one search of a venue database over a plurality of venue categories considering the received location and may determine a neighborhood location of the mobile computing device based on results of the search.

Abstract: A DNA fragment encoding a carbohydrate binding lectin BJ38 in chromosomal DNA of Bradyrhizobium japonicum is described. The DNA is used as a source of the lectin, as a probe and as DNA for recombinant strains of rhizobium with enhanced nodulation and production in legumes.