Abstract: A polymer composition containing a polyoxymethylene polymer having low shrinkage characteristics and/or an expanded processing window is disclosed. The polymer composition is particularly well suited for use in three-dimensional printing systems, such as printers that use filament fusion technology. The polymer composition, for instance, can be a feed material in the form of a filament or polymeric pellets. The feed material can be placed in a printer cartridge for insertion into a three-dimensional printing system. In accordance with the present disclosure, a polyoxymethylene polymer is combined with one or more dimensional stabilizing agents for dramatically improving the processing characteristics of the polymer.

Abstract: In general, the disclosure is directed to bulk iron-nitride materials having a polycrystalline microstructure having pores including a plurality of crystallographic grains surrounded by grain boundaries, where at least one crystallographic grain includes an iron-nitride phase including any of a body centered cubic (bcc) structure, a body centered tetragonal (bct), and a martensite structure. The disclosure further describes techniques producing a bulk iron-nitride material having a polycrystalline microstructure, including: melting an iron source to obtain a molten iron source; fast belt casting the molten iron source to obtain a cast iron source; cooling and shaping the cast iron source to obtain a bulk iron-containing material having a body-centered cubic (bcc) structure; annealing the bulk iron-containing material at an austenite transformation temperature and subsequently cooling the bulk iron-containing material; and nitriding the bulk iron-containing material to obtain the bulk iron-nitride material.

Abstract: A polymer composition containing a polyoxymethylene polymer having low shrinkage characteristics and/or an expanded processing window is disclosed. The polymer composition is in the form of a powder containing particles having a controlled particle size and particle size distribution. The powder is formulated so as to be used in a three-dimensional printing system, such as a fused bed process.

Abstract: A method may include annealing a material including iron and nitrogen in the presence of an applied magnetic field to form at least one Fe16N2 phase domain. The applied magnetic field may have a strength of at least about 0.2 Tesla (T).

Abstract: A polymer composition containing cellulose acetate in combination with one or more bio-based polymers is described. The polymer composition can optionally also contain a plasticizer. The polymer composition is formulated so as to have properties similar to petroleum-based polymers for producing, for example, single-use biodegradable articles.

Abstract: A polymer composition containing cellulose acetate in combination with one or more impact modifiers is described. The polymer composition can also contain a plasticizer and a bio-based polymer in addition to the cellulose acetate. The polymer composition is formulated so as to have properties similar to petroleum-based polymers for producing, for example, single-use biodegradable articles.

Abstract: A polymer composition containing cellulose acetate in combination with one or more plasticizers and one or more acid scavengers. The composition can also optionally include one or more bio-based polymers. The polymer composition is formulated so as to have properties similar to petroleum-based polymers for producing, for example, single-use biodegradable articles.

Abstract: A polymer composition containing cellulose acetate in combination with one or more bloom resistant or bio-based plasticizers and optionally one or more bio-based polymers is described. The polymer composition is formulated so as to have properties similar to petroleum-based polymers for producing, for example, single-use biodegradable articles.

Abstract: There is provided a network system including one or more first MMEs (30), and a second MME (40) separated from the first MMEs (30). In one of operation cases, the first MME (30) pushes, to the second MME (40), security context for a UE (10) that attaches to the first MME (30). The second MME (40) stores the security context. The first MME (30) further pushes the latest security context to the second MME (40), during a switch-off procedure for the first MME (30). The second MME (40) updates the stored security context with the latest security context. The first MME (30) pulls the security context from the second MME (40), when the UE (10) re-attaches to the first MME (30) or is handovered from different one of the first MMEs (30).

Abstract: There is provided a network system including one or more first MMEs (30), and a second MME (40) separated from the first MMEs (30). In one of operation cases, the first MME (30) pushes, to the second MME (40), security context for a UE (10) that attaches to the first MME (30). The second MME (40) stores the security context. The first MME (30) further pushes the latest security context to the second MME (40), during a switch-off procedure for the first MME (30). The second MME (40) updates the stored security context with the latest security context. The first MME (30) pulls the security context from the second MME (40), when the UE (10) re-attaches to the first MME (30) or is handovered from different one of the first MMEs (30).

Abstract: A method of performing authentication and authorization in Proximity based Service (ProSe) communication by a requesting device which sends a request of a communication and a receiving device which receives the request from the requesting device, the method including deriving session keys Kpc and Kpi from an unique key Kp at the requesting and receiving devices, using the session keys Kpc and Kpi for ProSe communication setup and direct communication between the requesting and receiving devices, starting the direct communication with the requesting and receiving devices. The key Kpc is confidentiality key and the key Kpi is integrity protection key.

Abstract: A method may include annealing a material including iron and nitrogen in the presence of an applied magnetic field to form at least one Fe16N2 phase domain. The applied magnetic field may have a strength of at least about 0.2 Tesla (T).

Abstract: A laminate for use in a circuit board is provided. The laminate comprises a conductive layer and a film positioned adjacent to the conductive layer. The film comprises a polymer composition that includes a liquid crystalline polymer and a hydrophobic material. The polymer composition exhibits a dielectric constant of about 5 or less and dissipation factor of about 0.05 or less at a frequency of 10 GHz.

Abstract: An RF filter comprising a resonator element and a polymer composition is provided. The polymer composition contains an aromatic polymer and has a melting temperature of about 240° C. or more. The polymer composition exhibits a dielectric constant of about 5 or less and dissipation factor of about 0.05 or less at a frequency of 10 GHz.

Abstract: The present disclosure relates to a novel hydrogel, and to method of making and using the novel hydrogel. The novel hydrogel is a reaction product of a water soluble laccase cross-linked arabinoxylan and an acid, and has a pH value of 1.5-2.5.

Abstract: A network node (21), which is placed within a core network, receives a message from a transmission source (30) placed outside the core network. The message includes an indicator indicating whether or not the message is addressed to a group of one or more MTC devices attached to the core network. The network node (21) determines to authorize the transmission source (30), when the indicator indicates that the message is addressed to the group. Further, the message includes an ID for identifying whether or not the message is addressed to the group. The MTC device determines to discard the message, when the ID does not coincide with an ID allocated for the MTC device itself. Furthermore, the MTC device communicates with the transmission source (30) by use of a pair of group keys shared therewith.

Abstract: A laser activatable polymer composition is provided. The composition contains at least one laser activatable additive and at least one high naphthenic thermotropic liquid crystalline polymer that contains repeating units derived from naphthenic hydroxycarboxylic and/or dicarboxylic acids in an amount of about 10 mol. % or more. The polymer composition exhibits a dielectric constant of about 5 or less as determined at a frequency of 2 GHz.

Abstract: A method for assessing transportation risk is adapted to an object transported by a vehicle. The method comprises disposing a sensor on a floor of the vehicle to generate and collect a vibration signal, with the floor being configured to carry the object, a computing device performs a time-domain processing procedure according to the vibration signal to output a first data, performs a frequency-domain processing procedure according to the first data to output a second data, performs a risk assessing procedure to output a risk level according to the second data and a reference data, wherein the second data comprises an actual vibration intensity and an actual vibration duration and the reference data comprises a reference vibration intensity and a reference vibration duration.

Abstract: A 5G system comprising at least one antenna element configured to transmit and receive 5G radio frequency signals and at least one electronic component is provided. The antenna element, the electronic component, or both, comprise a polymer composition that includes a liquid crystalline polymer that contains repeating units derived from naphthenic hydroxycarboxylic and/or dicarboxylic acids in an amount of about 10 mol. % or more. Further, the polymer composition exhibits a dielectric constant of about 5 or less and dissipation factor of about 0.05 or less at a frequency of 10 GHz.

Abstract: A polymer composition comprising a liquid crystalline polymer that contains repeating units derived from naphthenic hydroxycarboxylic and/or dicarboxylic acids in an amount of about 50 mol. % or more is provided. The polymer composition exhibits a dielectric constant of about 4 or less and a dissipation factor of about 0.05 or less at a frequency of 10 GHz.