Abstract: The present invention is related to a method for purifying crude ?-sulfo fatty acid salt obtained by the reaction of fatty acid and sulfur oxides, comprising the following steps: a) diluting the crude ?-sulfo fatty acid in a solvent and adjusting the ph from 2 to 4; b) heating up the slurry of a-sulfo fatty acid salt obtained in the step a) until being fully solubilized: c) cooling down the solution of ?-sulfo fatty acid salt obtained in the step b) to room temperature gradually to obtain the crystals; d) filtering the crystal obtained in the step c) to remove the motherinsing the filter cake at least twice with acid aqueous solution to obtain the purified ?-sulfo fatty acid salt.

Abstract: A method for a selective detection of L-tryptophan (L-Trp) using formaldehyde as a medium is disclosed. The method includes preparation of a copper sulfide nanosheets-chitosan/acidified functionalized multi-wall carbon nanotubes (CuS NS—CS/F-MWCNTs) composite material, preparation of a composite film-modified electrode CuS NS—CS/F-MWCNTs/GCE, and a detection of the L-Trp. Since oxidation peaks of L-Trp and L-tyrosine (L-Tyr) overlap and are difficult to separate, the present invention provides a method for a highly selective detection of L-Trp through the Pictet-Spengler reaction of formaldehyde (HCHO) with L-Trp, in which the oxidation peak potential of L-Trp is shifted to 0.82 V and the oxidation peak potential of L-Tyr is 0.63 V, thereby effectively avoiding the interference of L-Tyr. The CuS NS—CS/F-MWCNTs/GCE is applied to detect L-Trp in the formaldehyde medium without any interference from L-Tyr or other amino acids with 50-fold concentrations.

Abstract: Embodiments of the present disclosure relate to motion tracking synchronization in virtual reality systems. In an embodiment, a computing system that includes a processor and a memory including computer readable instructions is provided. The processor is configured to, based on execution of the computer readable instructions, receive an indication from a virtual reality (VR) application that the VR application has started, receive tracking data from a first motion tracking system and a second motion tracking system, each motion tracking system comprising one or more sensors, and generate system-independent tracking objects from the tracking data. The processor is further configured to, based on execution of the computer readable instructions, format the system-independent tracking objects into VR objects compatible with a VR system, transmit the VR objects to the VR system, and provide a real world environment view to users overlaid or independent of VR environment.

Abstract: Dynamic management method and system for an active state power management (ASPM) mechanism are provided. The method is applicable to a peripheral component interconnect express (PCIe) transmission architecture that includes a host and a PCIe downstream component. The method includes: configuring the PCIe downstream component to perform: determining whether data transmission status between a PCIe upstream component and the PCIe downstream component is in a busy state, a stable idle state or a temporary state; in response to determining that the data transmission status is in the busy state, forcibly disabling the ASPM function; in response to determining that the data transmission state is in the stable idle state, forcibly enabling the ASPM function; and in response to determining that the data transmission state is in the temporary state, determining whether the data transmission state is the busy state, the stable idle state or the temporary state again.

Abstract: Disclosed are an abietane type diterpene compound, a preparation method and an application thereof, relating to the technical field of anti-tumor compounds, where the compound has a chemical structure as shown in the following formula I: Leucosceptrum canum is extracted to prepare the abietane type diterpene compound according to the present application, and the prepared compound is effectively applied in inhibiting human lung cancer cell A549 and human myeloid leukemia cell HL-60.

Abstract: Disclosed are an abietane type diterpene compound, a preparation method and an application thereof, relating to the technical field of anti-tumor compounds, where the compound has a chemical structure as shown in the following formula I: Leucosceptrum canum is extracted to prepare the abietane type diterpene compound according to the present application, and the prepared compound is effectively applied in inhibiting human lung cancer cell A549 and human myeloid leukemia cell HL-60.

Abstract: A method and a sensor for detecting L-arginine are provided. The method includes synthesizing ferrocene-functionalized hexadecapeptide dithiocyclopentane (FC-P16 Peptide), preparing a polypeptide composite membrane-modified electrode (FC-P16 Peptide/AuE), detecting L-Arg and other steps. The results show that the polypeptide composite membrane-modified electrode (FC-P16 Peptide/AuE) exhibits excellent electrochemical response properties to L-Arg. In 10 mmol/L phosphate-buffered saline (PBS, pH=7.4), the DPV response peak current of the polypeptide composite membrane-modified electrode has an excellent linear relationship with the L-Arg concentration of 1.0×10?13 mol/L to 1.0×10?7 mol/L, with a detection limit of 1.0×10?13 mol/L. With prominent reproducibility, repeatability and selectivity, the modified electrode has potential application in life science and nutritional health.

Abstract: A method and a sensor for detecting L-arginine are provided. The method includes synthesizing ferrocene-functionalized hexadecapeptide dithiocyclopentane (FC-P16 Peptide), preparing a polypeptide composite membrane-modified electrode (FC-P16 Peptide/AuE), detecting L-Arg and other steps. The results show that the polypeptide composite membrane-modified electrode (FC-P16 Peptide/AuE) exhibits excellent electrochemical response properties to L-Arg. In 10 mmol/L phosphate-buffered saline (PBS, pH=7.4), the DPV response peak current of the polypeptide composite membrane-modified electrode has an excellent linear relationship with the L-Arg concentration of 1.0×10?13 mol/L to 1.0×10?7 mol/L, with a detection limit of 1.0×10?13 mol/L. With prominent reproducibility, repeatability and selectivity, the modified electrode has potential application in life science and nutritional health.

Abstract: Embodiments of the present disclosure relate to motion tracking synchronization in virtual reality systems. In an embodiment, a computing system that includes a processor and a memory including computer readable instructions is provided. The processor is configured to, based on execution of the computer readable instructions, receive an indication from a virtual reality (VR) application that the VR application has started, receive tracking data from a first motion tracking system and a second motion tracking system, each motion tracking system comprising one or more sensors, and generate system-independent tracking objects from the tracking data. The processor is further configured to, based on execution of the computer readable instructions, format the system-independent tracking objects into VR objects compatible with a VR system, transmit the VR objects to the VR system, and provide a real world environment view to users overlaid or independent of VR environment.

Abstract: Embodiments of the present disclosure relate to motion tracking synchronization in virtual reality systems. In an embodiment, a computing system that includes a processor and a memory including computer readable instructions is provided. The processor is configured to, based on execution of the computer readable instructions, receive an indication from a virtual reality (VR) application that the VR application has started, receive tracking data from a first motion tracking system and a second motion tracking system, each motion tracking system comprising one or more sensors, and generate system-independent tracking objects from the tracking data. The processor is further configured to, based on execution of the computer readable instructions, format the system-independent tracking objects into VR objects compatible with a VR system, transmit the VR objects to the VR system, and provide a real world environment view to users overlaid or independent of VR environment.

Abstract: A method for a selective detection of L-tryptophan (L-Trp) using formaldehyde as a medium is disclosed. The method includes preparation of a copper sulfide nanosheets-chitosan/acidified functionalized multi-wall carbon nanotubes (CuS NS-CS/F-MWCNTs) composite material, preparation of a composite film-modified electrode CuS NS-CS/F-MWCNTs/GCE, and a detection of the L-Trp. Since oxidation peaks of L-Trp and L-tyrosine (L-Tyr) overlap and are difficult to separate, the present invention provides a method for a highly selective detection of L-Trp through the Pictet-Spengler reaction of formaldehyde (HCHO) with L-Trp, in which the oxidation peak potential of L-Trp is shifted to 0.82 V and the oxidation peak potential of L-Tyr is 0.63 V, thereby effectively avoiding the interference of L-Tyr. The CuS NS-CS/F-MWCNTs/GCE is applied to detect L-Trp in the formaldehyde medium without any interference from L-Tyr or other amino acids with 50-fold concentrations.

Abstract: A payment bill query request initiated by a user through a third-party payment platform is obtained at a payment platform server. Whether a payment institution has generated a payment bill for the user is determined based on the payment bill query request, where the payment institution does not provide the third-party payment platform with bill generation information. If so, user information associated with the user is obtained by the payment platform server and based on the payment bill. Whether information for notification that the payment institution has generated the payment bill for the user has been pushed to the region that the user belongs to is determined. If not, the information for notification that the payment institution has generated a payment bill is pushed to each user associated with the third-party payment platform within the region that the user belongs to through an account of the third-party payment platform.

Abstract: A payment bill query request initiated by a user through a third-party payment platform is obtained at a payment platform server. Whether a payment institution has generated a payment bill for the user is determined based on the payment bill query request, where the payment institution does not provide the third-party payment platform with bill generation information. If so, user information associated with the user is obtained by the payment platform server and based on the payment bill. Whether information for notification that the payment institution has generated the payment bill for the user has been pushed to the region that the user belongs to is determined. If not, the information for notification that the payment institution has generated a payment bill is pushed to each user associated with the third-party payment platform within the region that the user belongs to through an account of the third-party payment platform.

Abstract: Apparatuses and methods are disclosed for form operation on a mobile terminal. An exemplary method may include detecting an input hand gesture on a screen, and acquiring a trajectory of the input hand gesture. The method may also include matching the acquired trajectory of the input hand gesture with the hand gestures in correspondence in accordance with the hand-gesture comparison rules. The correspondence between hand gestures, hand-gesture comparison rules, and form operations is preset. The method may further include triggering a corresponding form operation if the matching is successful.

Abstract: A method and system of predicting or estimating an adherence score representing a subject's adherence to a medication dosage scheme. A subject-reported adherence score is upwardly revised based on application usage information of an application used by the subject to report their adherence. A prediction model may be used to adjust the subject-reported adherence score based on the application usage information.