Abstract: The present invention provides for recombinant Endo-S mutants that exhibit reduced hydrolysis activity and increased transglycosylation activity for the synthesis of glycoproteins wherein a desired sialylated oxazoline or synthetic oligosaccharide oxazoline is added to a core fucosylated or nonfucosylated GlcNAc-protein acceptor. Such recombinant Endo-S mutants are useful for efficient glycosylation remodeling of IgG1-Fc domain to provide different antibody glycoforms carrying structurally well-defined Fc N-glycans.

Abstract: A method of provisioning an optical network may include receiving one or more virtual optical network (VON) requests. Each VON request may include one or more virtual nodes and one or more virtual links. The virtual nodes may have one or more candidate nodes corresponding to a physical optical network. The method may also include identifying mapping patterns for VON requests by iteratively assigning each virtual node to one of their candidate nodes for each combination of candidate nodes and assigning each virtual link to corresponding physical links. The method may also include formulating a first set of constraint equations based on mapping patterns for the VON requests and formulating a second set of constraint equations based on physical optical network constraints. The first and second set of constraint equations may be solved by satisfiability modulo theories to obtain a mapping solution.

Abstract: A method of provisioning a network may include receiving a mapping solution for one or more virtual optical network (VON) requests including virtual nodes and virtual links. The mapping solution may include one mapping pattern for each VON request and each mapping pattern may include an ordered list of physical nodes. The method may also include formulating inequality constraint equations based on physical links that are shared by multiple virtual links. The method may also include formulating range constraint equations for each virtual link based on a physical link for each virtual link with a lowest number of optical transmission slots such that each virtual link occupy a same optical transmission slot across all physical links that are traversed by the virtual link. The inequality and range constraint equations may be solved with satisfiability modulo theories to obtain a slot assignment solution.

Abstract: The present invention discloses a bionic shale inhibitor, consisting of structural units denoted by formula (1) and structural units denoted by formula (2), wherein, the molar ratio of the structural units denoted by formula (1) to the structural units denoted by formula (2) is 0.2-6:1, and the weight-average molecular weight of the shale inhibitor is 800-4,000 g/mol. The present invention further provides a method for preparation of a bionic shale inhibitor. The present invention further provides a drilling fluid containing the bionic shale inhibitor. The bionic shale inhibitor disclosed in the present invention has high shale inhibition capability, and is environment-friendly and pollution-free.

Abstract: The present subject matter relates to an amphiphilic reservoir protecting agent, including structural units denoted by the following formula (1), (2), (3) and (4). The present subject matter further provides a method for preparation of an amphiphilic reservoir protecting agent. The present subject matter further provides a drilling fluid that contains the amphiphilic reservoir protecting agent. The amphiphilic reservoir protecting agent and drilling fluid obtained in the present subject matter have high reservoir protection property and high shale inhibition property.

Abstract: The present subject matter relates to the drilling fluid field, and discloses a viscosifier for oil-based drilling fluids and a method for preparing the viscosifier for oil-based drilling fluids. The preparation method comprises the following steps: (1) mixing an initiator with an unsaturated amide, an unsaturated organic sulfonic acid, and an unsaturated organic carboxylic acid in an aqueous phase solution and initiating a polymerization reaction with an oil phase solution that contains emulsifier and base oil, to obtain a polymer emulsion; (2) purifying and drying the polymer emulsion to obtain a composition; (3) mix the composition, sepiolite powder, and an acid while stirring, and then drying the obtained mixture. The viscosifier for oil-based drilling fluids disclosed in the present subject matter can make up for the shortage of viscosifiers for oil-based drilling fluids in the art, and has favorable temperature tolerance property, viscosity improvement property and environmental friendliness.

Abstract: The present subject matter relates to an amphiphilic reservoir protecting agent, including structural units denoted by the following formula (1), (2), (3) and (4). The present subject matter further provides a method for preparation of an amphiphilic reservoir protecting agent. The present subject matter further provides a drilling fluid that contains the amphiphilic reservoir protecting agent. The amphiphilic reservoir protecting agent and drilling fluid obtained in the present subject matter have high reservoir protection property and high shale inhibition property.

Abstract: A method for network analysis includes determining an initial set of demands upon the resources of a network, determining a new set of demands upon the resources of the network, apply a policy for assigning a demand of the new set of demands to a demand of the initial set of demands, create a dependency for the assignment of the demand of the new set of demands to the demand of the initial set of demands, construct a sub-graph including the dependency, and incorporate the sub-graph into a resource-oriented-dependency graph. Each demand includes a quantification.

Abstract: A method of forming an oxide layer on an exposed surface of a semiconductor device which contains a p-n junction is disclosed, the method comprising: immersing the exposed surface of the semiconductor device in an electrolyte; producing an electric field in the semiconductor device such that the p-n junction is forward-biased and the exposed surface is anodic; and electrochemically oxidizing the exposed surface to form an oxide layer.

Abstract: A method and device for a mobile terminal to locate a sound source relates to the technology of localization of a sound source with an array of microphones. The method includes collecting information of an external sound with the array of microphones (101), analysing the information of the external sound to determine information of a target sound source (102), and calculating a location of the target sound source according to time delay of the array of microphones to acquire the information of the target sound source (103). The device includes: a sound source information collection module (20) configured to collect information of an external sound with an array of microphones; a sound source information calculation and processing module (30) configured to analyse the information of the external sound to determine information of a target sound source and calculate a location of the target sound source according to time delay of the array of microphones to acquire the information of the target sound source.

Abstract: Methods and apparatus for presenting clipboard contents on a mobile terminal are provided herein. In an exemplary method, an input-method-control call-out request can be received. An input-method control including a clipboard function key can be displayed. The input-method control can include an input box. A triggering signal for triggering the clipboard function key can be received. A clipboard containing one or more copying items can be displayed.

Abstract: The present subject matter discloses a reservoir protecting agent composition, consisting of non-fluorescent sulfonated asphalt and a reservoir protecting agent, wherein, the reservoir protecting agent is composed of structural units denoted by the following formula (1), (2), and (3). The present subject matter further provides a drilling fluid that contains the above-mentioned reservoir protecting agent composition for middle permeability reservoirs. The present subject matter further provides an application of the drilling fluid for middle permeability reservoirs in well drilling in middle permeability reservoirs. The drilling fluid for middle permeability reservoirs disclosed in the present subject matter exhibits favorable rheology property, temperature tolerance property, and anti-collapse and protection performance when it is used in wall drilling in middle permeability reservoirs.

Abstract: The present invention provides for recombinant Endo-D and selected mutants that exhibit reduced hydrolysis activity and increased transglycosylation activity for the synthesis of glycoproteins wherein a desired sugar chain is added to a core fucosylated or nonfucosylated GlcNAc-protein acceptor by transglycosylation. Such recombinant Endo-D and selected mutants are useful for efficient glycosylation remodeling of IgG1-Fc domain.

Abstract: The disclosure discloses a method, equipment and system for incremental updates in the information processing technology. The method includes: unpacking a new version installation package to get a new version unpacked folder having a new version unpacked file and a new version signature subfolder having a new version unpacked file; obtaining header file information of the at least one new version unpacked, and converting a format of the header file information; packing the new version convert folder to a new version archive package and obtaining at one historical version archive package; generating and obtaining one differential file; and releasing the one differential file wherein the at least one differential file that is released is selected by a client that has memory and at least one processor to download and form a second new version installation package according to the at least one differential file that is downloaded.

Abstract: Screen control methods and apparatus are provided. When it is determined that a touch control pressure value on a touch control screen exceeds a pre-set pressure threshold value to, a touch control operation by a finger on the touch control screen can be obtained. Corresponding to the touch control operation, a control instruction can be called according to a mapping relationship table that is pre-set. The mapping relationship table includes a mapping relationship between the touch control operation and the control instruction. The touch control screen can be controlled to display contents according to the control instruction.

Abstract: A method for switching a current information providing mode is provided, wherein the method comprises steps as follows: user context information related to a user device is firstly collected. A current user context of the user device is then identified in accordance with the collected user context information, so as to an identified consequence data is the generated. A current information providing mode suitable for the current user context of the user device is subsequently switched according to the consequence data.

Abstract: A method for threshing and pneumatic separation of tobacco leaves, including: 1) transporting a mixture of the tobacco slices and stems from a primary threshing set into primary pneumatic separation unit for sorting out tobacco slices, and transporting a remaining mixture into a secondary threshing set; 2) transporting the mixture from the secondary threshing set into a secondary pneumatic separation unit for sorting out the tobacco slices and qualified stems, and transferring a remaining mixture to a tertiary threshing set; 3) transporting the mixture from the tertiary threshing set into a tertiary pneumatic separation unit for sorting out the tobacco slices and the qualified stems, and transferring a remaining mixture into a quaternary threshing set; 4) transporting the mixture from the quaternary threshing set into a quaternary pneumatic separation unit for sorting out the tobacco slices and the qualified stems, and returning a remaining mixture to the quaternary threshing set.

Abstract: The present subject matter relates to a preparation method of a wettability reversal agent, comprising: (1) adding an emulsifier into water to prepare a mixed solution of emulsifier; (2) adding compounds represented by formula (1-a), (2-a), (3-a), (4-a), (5-a), and (6-a) to the mixed solution of emulsifier to obtain a pre-emulsion, adding an initiator, and initiating a polymerization reaction. When the wettability reversal agent and reservoir protecting agent composition disclosed in the present subject matter are used in a drilling fluid, they can effectively prevent the permeation of the water phase and oil phase in the drilling fluid into the reservoir, reduce the filter loss of the drilling fluid, and thereby effectively protect the reservoir against damages from the drilling fluid.

Abstract: A method for preparing a semiconductor substrate with an buried insulating layer by a guttering process, includes the following steps: providing a device substrate and a supporting substrate; forming an insulating layer on a surface of the device substrate; performing a heating treatment on the device substrate, so as to form a denuded zone on the surface of the device substrate; bonding the device substrate having the insulating layer with the supporting substrate, such that the insulating layer is sandwiched between the device substrate and the supporting substrate; annealing and reinforcing a bonding interface, such that an adherence level of the bonding interface meets requirements in the following chamfering grinding, thinning and polishing processes; performing the chamfering grinding, thinning and polishing processes on the device substrate which is bonded.

Abstract: Virtual optical network (VON) provisioning using implicit encoding of mapping constraints may include evaluating mapping choices to exclude certain mapping patterns before evaluating the mapping patterns. For each virtual node in a VON request, candidate physical nodes may be assigned and evaluated for compliance with constraints associated with the VON request. The constraints may be expanded to allow for various selection criteria for the VON request. Multiple VON requests may be simultaneously evaluated to find optimal solutions for the physical network.