Abstract: An actuator, including a housing having a flow conduit therethrough, a pressure balanced poppet disposed in the housing, initially preventing flow through the housing, and a heat evolving composition disposed to move the poppet by fluid heating to cease preventing flow through the housing upon ignition of the heat evolving composition. A method for actuating a tool, including igniting the heat evolution composition, heating a fluid located between the poppet and the housing, driving the poppet to move with the heated fluid, and flowing fluid through the housing. A borehole tool, including the actuator, a tool member disposed in the tool and movable by the fluid flowing through the housing, the movement of the tool member changing an operational condition of the tool. A borehole system, including a borehole in a subsurface formation, a string in the borehole, the actuator disposed within or as a part of the string.

Abstract: An actuator, including a housing having a flow conduit therethrough, a pressure balanced poppet disposed in the housing, initially preventing flow through the housing, and a heat evolving composition disposed to move the poppet by fluid heating to cease preventing flow through the housing upon ignition of the heat evolving composition. A method for actuating a tool, including igniting the heat evolution composition, heating a fluid located between the poppet and the housing, driving the poppet to move with the heated fluid, and flowing fluid through the housing. A borehole tool, including the actuator, a tool member disposed in the tool and movable by the fluid flowing through the housing, the movement of the tool member changing an operational condition of the tool. A borehole system, including a borehole in a subsurface formation, a string in the borehole, the actuator disposed within or as a part of the string.

Abstract: A multi-stage object drop frac assembly that includes a fracture subassembly is configured for disposal in a well zone. The assembly includes a plurality of filtration media stages configured for disposal in the same well zone. A plurality of valves, one of the plurality of valves being associated with each of the plurality of filtration media stages is a part of the assembly and the plurality of valves are openable simultaneously in response to the same event.

Abstract: A frac dart includes a body having an outer surface and an end including at least one opening. A cutter support is mounted at the end adjacent the at least one opening. A cutter is moveably mounted at the cutter support. A counter support is slideably mounted on the outer surface, and a counter is arranged between the counter support and the cutter support. The cutter is operable to sever a portion of the counter.

Abstract: A frac dart includes a body having an outer surface and an end including at least one opening. A cutter support is mounted at the end adjacent the at least one opening. A cutter is moveably mounted at the cutter support. A counter support is slideably mounted on the outer surface, and a counter is arranged between the counter support and the cutter support. The cutter is operable to sever a portion of the counter.

Abstract: A multi-stage object drop frac assembly including a fracture subassembly configured for disposal in a well zone, a plurality of filtration media stages configured for disposal in the same well zone, and a plurality of valves, one of the plurality of valves being associated with each of the plurality of filtration media stages the plurality of valves openable simultaneously in response to a same event.

Abstract: Based on information associated with users, a social networking system recommends one or more groups for a target user to join or to create. Characteristics of the target user, characteristics of users connected to the target user, characteristics of candidate groups in the social networking system may be used to identify groups for recommendation. The social networking system may provide questions to the target user and recommend a group to the target user based on received answers to the questions. For example, the answers to the provided question identify one or more characteristics of the target user, which are used to select a group for recommendation. Additionally, the social networking system may recommend additional users for the target user to add or invite to a group based on characteristics of the target user, the additional users, and/or the group.

Abstract: A client device displays message content from one or more email messages in a conversation thread. The client device displays, concurrently with the message content from the one or more email messages, one or more respective social network objects. Each displayed social network object has one or more selection portions, and each displayed social network object corresponds to a respective post by a respective participant in the conversation thread. In response to selection of a first portion of a respective social network object of the one or more displayed social network objects, the client device displays a respective social network page of the respective participant who authored the respective post corresponding to the respective social network object.

Abstract: A server system having one or more processors and memory storing one or more programs for execution by the one or more processors receives from a client device a request, the request comprising a request for message content from one or more email messages in a conversation thread. The server system responds to the request by identifying the message content, identifying candidate authors, and obtaining qualifying posts by the candidate authors, the qualifying posts satisfying predefined criteria. The server system furthermore selects a subset of the qualifying posts, and prepares the selected subset of the qualifying posts and the message content for concurrent display at the client device.

Abstract: Based on information associated with users, a social networking system recommends one or more groups for a target user to join or to create. Characteristics of the target user, characteristics of users connected to the target user, characteristics of candidate groups in the social networking system may be used to identify groups for recommendation. The social networking system may provide questions to the target user and recommend a group to the target user based on received answers to the questions. For example, the answers to the provided question identify one or more characteristics of the target user, which are used to select a group for recommendation. Additionally, the social networking system may recommend additional users for the target user to add or invite to a group based on characteristics of the target user, the additional users, and/or the group.

Abstract: A server system having one or more processors and memory storing one or more programs for execution by the one or more processors receives from a client device a request, the request comprising a request for message content from one or more email messages in a conversation thread. The server system responds to the request by identifying the message content, identifying candidate authors, and obtaining qualifying posts by the candidate authors, the qualifying posts satisfying predefined criteria. The server system furthermore selects a subset of the qualifying posts, and prepares the selected subset of the qualifying posts and the message content for concurrent display at the client device.

Abstract: Based on information associated with users, a social networking system recommends one or more groups for a target user to join or to create. Characteristics of the target user, characteristics of users connected to the target user, characteristics of candidate groups in the social networking system may be used to identify groups for recommendation. The social networking system may provide questions to the target user and recommend a group to the target user based on received answers to the questions. For example, the answers to the provided question identify one or more characteristics of the target user, which are used to select a group for recommendation. Additionally, the social networking system may recommend additional users for the target user to add or invite to a group based on characteristics of the target user, the additional users, and/or the group.

Abstract: Based on information associated with users, a social networking system recommends one or more groups for a target user to join or to create. Characteristics of the target user, characteristics of users connected to the target user, characteristics of candidate groups in the social networking system may be used to identify groups for recommendation. The social networking system may provide questions to the target user and recommend a group to the target user based on received answers to the questions. For example, the answers to the provided question identify one or more characteristics of the target user, which are used to select a group for recommendation. Additionally, the social networking system may recommend additional users for the target user to add or invite to a group based on characteristics of the target user, the additional users, and/or the group.

Abstract: A server system having one or more processors and memory storing one or more programs for execution by the one or more processors receives from a client device a request, the request comprising a request for message content from one or more email messages in a conversation thread. The server system responds to the request by identifying the message content, identifying candidate authors, and obtaining qualifying posts by the candidate authors, the qualifying posts satisfying predefined criteria. The server system furthermore selects a subset of the qualifying posts, and prepares the selected subset of the qualifying posts and the message content for concurrent display at the client device.

Abstract: Based on information associated with users, a social networking system recommends one or more groups for a target user to join or to create. Characteristics of the target user, characteristics of users connected to the target user, characteristics of candidate groups in the social networking system may be used to identify groups for recommendation. The social networking system may provide questions to the target user and recommend a group to the target user based on received answers to the questions. For example, the answers to the provided question identify one or more characteristics of the target user, which are used to select a group for recommendation. Additionally, the social networking system may recommend additional users for the target user to add or invite to a group based on characteristics of the target user, the additional users, and/or the group.

Abstract: Based on information associated with users, a social networking system recommends one or more groups for a target user to join or to create. Characteristics of the target user, characteristics of users connected to the target user, characteristics of candidate groups in the social networking system may be used to identify groups for recommendation. The social networking system may provide questions to the target user and recommend a group to the target user based on received answers to the questions. For example, the answers to the provided question identify one or more characteristics of the target user, which are used to select a group for recommendation. Additionally, the social networking system may recommend additional users for the target user to add or invite to a group based on characteristics of the target user, the additional users, and/or the group.

Abstract: Based on information associated with users, a social networking system recommends one or more groups for a target user to join or to create. Characteristics of the target user, characteristics of users connected to the target user, characteristics of candidate groups in the social networking system may be used to identify groups for recommendation. The social networking system may provide questions to the target user and recommend a group to the target user based on received answers to the questions. For example, the answers to the provided question identify one or more characteristics of the target user, which are used to select a group for recommendation. Additionally, the social networking system may recommend additional users for the target user to add or invite to a group based on characteristics of the target user, the additional users, and/or the group.

Abstract: Based on information associated with users, a social networking system recommends one or more groups for a target user to join or to create. Characteristics of the target user, characteristics of users connected to the target user, characteristics of candidate groups in the social networking system may be used to identify groups for recommendation. The social networking system may provide questions to the target user and recommend a group to the target user based on received answers to the questions. For example, the answers to the provided question identify one or more characteristics of the target user, which are used to select a group for recommendation. Additionally, the social networking system may recommend additional users for the target user to add or invite to a group based on characteristics of the target user, the additional users, and/or the group.