Abstract: Methods, systems, and computer readable media can be operable to facilitate management of parental control settings at one or more devices based upon a detection of a control device. A central device (115) may be configured with one or more device identifiers of one or more devices that are designated as control devices. In response to a determination by the central device (115) that no control device is connected to the central device (115), the central device (115) may enable one or more parental control settings at the central device (115) and/or one or more client devices (105). When the central device (115) determines that a control device is connected to the central device (115), the central device (115) may disable one or more parental control settings at the central device (115) and/or one or more client devices (105).

Abstract: A method of preparing monopentaerythritol, dipentaerthritol, and sodium formate through high temperature condensation and cascade recrystallization is disclosed. The method lowers the energy consumption dramatically and improves the cost-effectiveness by carrying out the reaction in a non-low-temperature zone, and thereby avoiding the requirement for refrigeration. The method alleviates the difficulty of separation and improves the product quality by means of cascade separation process, and thereby avoiding the low purity from a single separation. In addition, the mother liquor obtained after each separation step is recycled to the previous step as the recycling liquor, which avoids discharging waste, increases the product yield and lowers raw materials consumption.

Abstract: A method of preparing monopentaerythritol, dipentaerthritol, and sodium formate through high temperature condensation and cascade recrystallization is disclosed. The method lowers the energy consumption dramatically and improves the cost-effectiveness by carrying out the reaction in a non-low-temperature zone, and thereby avoiding the requirement for refrigeration. The method alleviates the difficulty of separation and improves the product quality by means of cascade separation process, and thereby avoiding the low purity from a single separation. In addition, the mother liquor obtained after each separation step is recycled to the previous step as the recycling liquor, which avoids discharging waste, increases the product yield and lowers raw materials consumption.