Abstract: A refrigeration system and a lubricating method thereof. The refrigeration system (100) includes: a compressor (110), a condenser (120), an evaporator (130), and a lubrication circuit (200), the lubrication circuit including a post-lubrication flow path (230,240,260) connected from the compressor into the condenser and the evaporator respectively; and a pre-lubrication flow path (210,220,250) connected from the condenser and the evaporator into the compressor respectively; wherein after flowing from the condenser via the pre-lubrication flow path to the compressor for lubrication, a part of refrigerant for lubrication can flow back to the evaporator via the post-lubrication flow path; or after flowing from the evaporator via the pre-lubrication flow path to the compressor for lubrication, the part of refrigerant for lubrication can flow back to the condenser via the post-lubrication flow path.

Abstract: Methods for selective deposition of metal oxide films on metal or metallic surfaces relative to oxide surfaces are provided. An oxide surface of a substrate may be selectively passivated relative to the metal or metallic surface, such as by exposing the substrate to a silylating agent. A metal oxide is selectively deposited from vapor phase reactants on the metal or metallic surface relative to the passivated oxide surface.

Abstract: Methods for selective deposition of silicon oxide films on metal or metallic surfaces relative to dielectric surfaces are provided. A dielectric surface of a substrate may be selectively passivated relative to a metal or metallic surface, such as by exposing the substrate to a silylating agent. Silicon oxide is then selectively deposited on the metal or metallic surface relative to the passivated oxide surface by contacting the metal surface with a metal catalyst and a silicon precursor comprising a silanol.

Abstract: Core-shell particles have a hydrophobic core and a shell formed of o containing hyperbranched polymers (HP). The HP can be covalently bound to the one or more materials that form the core or coated thereon. The HP coating can be modified to adjust the properties of the particles. For example, unmodified HP coatings resist non-specific protein absorption. Alternatively, the hydroxyl groups on the HP coating can be chemically modified to form functional groups that react with functional groups on tissue to adhere the particles to the tissue, cells, or extracellular materials, such as proteins. Such functional groups include, but not limited to, aldehydes, amines, and O-substituted oximes. Topical formulation for application to the skin contain these HP coated nanoparticles. In some embodiments, the particles include cosmetic, therapeutic, diagnostic, nutraceutical, and/or prophylactic agents, such as those used as sunblock compositions.

Abstract: An online concierge system allows users to order items within discrete time intervals later than a time when an order was received or for short-term fulfillment when the order was received. To account for a number of shoppers available to fulfill orders during different discrete time intervals and numbers of orders for fulfillment during different discrete time intervals, the online concierge system specifies a target rate for orders fulfilled later than a specified discrete time interval and a threshold from the target rate. A trained machine learning model periodically predicts a percentage of orders being fulfilled late, with an order associated with a predicted percentage when the order was received. The online concierge system increases a price of orders associated with predicted percentages greater than the threshold from the target rate. The increased price of an order is determined from a price elasticity curve and the predicted percentage.

Abstract: A system may determine configuration information associated with a power system for a work site that includes one or more power sources. The system may determine respective operation parameters of the one or more power sources and one or more performance criteria associated with the power system. The system may determine a baseline operation plan for the power system. The system may identify an optimization analysis technique and may process, using the optimization analysis technique, the configuration information associated with the power system, the respective operation parameters of the one or more power sources, and the one or more performance criteria associated with the power system to generate the optimized operation plan for the power system. The system may cause, based on the baseline operation plan for the power system and the optimized operation plan for the power system, one or more actions to be performed.

Abstract: Configuring subscriptions for receiving notifications associated with objects of a group-based communication platform is described. A user interface element, which can correspond to an object, can be displayed in a user interface of the group-based communication platform. An indication of an interaction with the user interface element can be received and in response to receiving the indication of the interaction with the user interface element, a subscription user interface can be presented via the user interface, wherein the subscription user interface is associated with an option to subscribe to notifications associated with the object. In response to receiving a request to subscribe to notifications associated with the object, a subscription for notifications associated with the object can be generated and, in response to generating the subscription, a subscription user interface element can be presented via the user interface to indicate that the object is associated with a subscription.

Abstract: A group-based communication platform can present, via a client device of the group-based communication platform, a user interface that includes a user interface element, interaction therewith, invoking a command associated with an external system. Based at partly on receiving an indication of an interaction with the user interface element, the group-based communication platform can cause payload data to be provided to the external system, wherein the payload data is associated with an indication of the command invoked via the interaction. Based at least partly on causing the payload data to be provided to the external system, a response to the payload data can be received and an interactive dialog can be presented via the user interface. The interactive dialog can be configured to prompt a user of the client device for data to be provided to the external system for performing a processing action associated with the command.

Abstract: Configuring subscriptions for receiving notifications associated with objects of a group-based communication platform is described. A user interface element, which can correspond to an object, can be displayed in a user interface of the group-based communication platform. An indication of an interaction with the user interface element can be received and in response to receiving the indication of the interaction with the user interface element, a subscription user interface can be presented via the user interface, wherein the subscription user interface is associated with an option to subscribe to notifications associated with the object. In response to receiving a request to subscribe to notifications associated with the object, a subscription for notifications associated with the object can be generated and, in response to generating the subscription, a subscription user interface element can be presented via the user interface to indicate that the object is associated with a subscription.

Abstract: A group-based communication platform is configured to initialize processing actions executable via validated external resources. Moreover, the group-based communication platform may recommend specific processing actions to a user based at least in part on the user's activity in interacting with the group-based communication platform (e.g., via a client device), wherein such activity may be represented as environmental contextual data. Moreover, once the user selects a particular processing action for execution, the group-based communication retrieves at least a portion of the generated environmental contextual data to be passed to the validated external resource for use in executing the selected processing action.

Abstract: A group-based communication platform can present, via a client device of the group-based communication platform, a user interface that includes a user interface element, interaction therewith, invoking a command associated with an external system. Based at partly on receiving an indication of an interaction with the user interface element, the group-based communication platform can cause payload data to be provided to the external system, wherein the payload data is associated with an indication of the command invoked via the interaction. Based at least partly on causing the payload data to be provided to the external system, a response to the payload data can be received and an interactive dialog can be presented via the user interface. The interactive dialog can be configured to prompt a user of the client device for data to be provided to the external system for performing a processing action associated with the command.

Abstract: Configuring subscriptions for receiving notifications associated with objects of a group-based communication platform is described. A user interface element, which can correspond to an object, can be displayed in a user interface of the group-based communication platform. An indication of an interaction with the user interface element can be received and in response to receiving the indication of the interaction with the user interface element, a subscription user interface can be presented via the user interface, wherein the subscription user interface is associated with an option to subscribe to notifications associated with the object. In response to receiving a request to subscribe to notifications associated with the object, a subscription for notifications associated with the object can be generated and, in response to generating the subscription, a subscription user interface element can be presented via the user interface to indicate that the object is associated with a subscription.

Abstract: A group-based communication platform can present, via a client device of the group-based communication platform, a user interface that includes a user interface element, interaction therewith, invoking a command associated with an external system. Based at partly on receiving an indication of an interaction with the user interface element, the group-based communication platform can cause payload data to be provided to the external system, wherein the payload data is associated with an indication of the command invoked via the interaction. Based at least partly on causing the payload data to be provided to the external system, a response to the payload data can be received and an interactive dialog can be presented via the user interface. The interactive dialog can be configured to prompt a user of the client device for data to be provided to the external system for performing a processing action associated with the command.

Abstract: Utilizing message metadata for improving user interface presentation is described. In an example, a first message associated with first metadata and a second message associated with second metadata can be received via a group-based communication platform. Based at least in part on the first metadata and the second metadata, causing the first message and the second message to be presented in a message digest via a first portion of a user interface associated with the group-based communication platform. The message digest can be associated with an actuation mechanism and, in response to receiving an indication of an interaction with the actuation mechanism, the first message and the second message can be presented, separately, via a second portion of the user interface.

Abstract: A group-based communication platform is configured to initialize processing actions executable via validated external resources. Moreover, the group-based communication platform may recommend specific processing actions to a user based at least in part on the user's activity in interacting with the group-based communication platform (e.g., via a client device), wherein such activity may be represented as environmental contextual data. Moreover, once the user selects a particular processing action for execution, the group-based communication retrieves at least a portion of the generated environmental contextual data to be passed to the validated external resource for use in executing the selected processing action.

Abstract: A group-based communication platform can present, via a client device of the group-based communication platform, a user interface that includes a user interface element, interaction therewith, invoking a command associated with an external system. Based at partly on receiving an indication of an interaction with the user interface element, the group-based communication platform can cause payload data to be provided to the external system, wherein the payload data is associated with an indication of the command invoked via the interaction. Based at least partly on causing the payload data to be provided to the external system, a response to the payload data can be received and an interactive dialog can be presented via the user interface. The interactive dialog can be configured to prompt a user of the client device for data to be provided to the external system for performing a processing action associated with the command.

Abstract: A group-based communication platform is configured to initialize processing actions executable via validated external resources. Moreover, the group-based communication platform may recommend specific processing actions to a user based at least in part on the user's activity in interacting with the group-based communication platform (e.g., via a client device), wherein such activity may be represented as environmental contextual data. Moreover, once the user selects a particular processing action for execution, the group-based communication retrieves at least a portion of the generated environmental contextual data to be passed to the validated external resource for use in executing the selected processing action.

Abstract: A group-based communication platform may be utilized to execute one or more processing actions via respective external application systems based on messages exchanged among client devices via the group-based communication platform. A particular processing action may be executed for a particular message by generating a container including contextual data and payload data, wherein the payload data comprises the message for which the processing action is to be performed. The container is provided to the external application system via a proxy endpoint, thereby causing the external application system to execute the processing action based on the data included within the container.

Abstract: A group-based communication platform may be utilized to execute one or more processing actions via respective external application systems based on messages exchanged among client devices via the group-based communication platform. A particular processing action may be executed for a particular message by generating a container including contextual data and payload data, wherein the payload data comprises the message for which the processing action is to be performed. The container is provided to the external application system via a proxy endpoint, thereby causing the external application system to execute the processing action based on the data included within the container.

Abstract: A group-based communication platform is configured to initialize processing actions executable via validated external resources. Moreover, the group-based communication platform may recommend specific processing actions to a user based at least in part on the user's activity in interacting with the group-based communication platform (e.g., via a client device), wherein such activity may be represented as environmental contextual data. Moreover, once the user selects a particular processing action for execution, the group-based communication retrieves at least a portion of the generated environmental contextual data to be passed to the validated external resource for use in executing the selected processing action.