76results about How to "High inhibition" patented technology

A lubricating oil composition having a sulfur content of up to about 0.4 wt. % and a sulfated ash content of up to about 0.5 wt. % as determined by ASTM D874 is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; (b) at least one oil-soluble or dispersed oil-stable boron-containing compound having greater than 400 ppm of boron, based upon the total mass of the composition; and (c) at least one oil-soluble or dispersed oil-stable molybdenum-containing compound having at least about 1100 ppm of molybdenum, based upon the total mass of the composition; wherein the lubricating oil composition has a ratio of sulfur to molybdenum of less than or equal to about 4:1.

A lubricating oil composition of SAE viscosity grade 0W20 which comprises a base oil and additive components comprising a nitrogen-containing ashless dispersant, an alkaline earth metal-containing detergent, a phosphorus-containing wear inhibitor, an oxidation inhibitor and a viscosity index improver and which shows a viscosity index of 200-240, a HTHS viscosity of not less than 2.9 mPa·s s at 150° C. and a Noack evaporation loss of not more than 13% favorably gives a high fuel economy and high wear inhibition to a four cycle gasoline engine of motorcycles and a diesel engine mounted on motor cars equipped with an exhaust gas post-processing apparatus.

The invention discloses a miniaturized broadband filtering antenna based on a cross coupling structure and a compact MIMO filtering antenna formed by the miniaturized broadband filtering antenna, which belong to the technical field of microwave antennas. The filtering antenna comprises a first dielectric substrate, a metal floor and a lower-layer second dielectric substrate which have the same size and are tightly attached to one another. The center of the upper surface of the first dielectric substrate is provided with a rectangular metal patch and two U-shaped parasitic patches surrounding the rectangular metal patch. The upper surface of the second dielectric substrate is a metal floor with two gaps, and the lower surface of the dielectric substrate is in a terminal bending open-circuitmicrostrip feed structure with two transverse branches and short-circuit nails. The filtering antenna is used as a unit to form a 2 * 2 MIMO antenna. The MIMO filtering antenna provided by the invention is compact in structure, and has obvious advantages in bandwidth, size and filtering performance.

An embodiment of the invention discloses a filtering device, and relates to the technical field of mobile communication. The filtering device solves problems of high insertion loss and poor far-end suppression performance of an existing filter. The filtering device in the embodiment is characterized in that a pass band of a primary unit consisting of at leas three coaxial filters covers a pass band of a secondary unit consisting of at least three dielectric filters, the bandwidth of the primary unit is twice of that of the secondary unit, so that when the coaxial filters are coupled to the dielectric filters, insertion loss of the coaxial filters is reduced, and total insertion loss of the filtering device is lowered. The transmission zero of the primary unit is positioned at second harmonic frequency point of the secondary unit, so that the filtering device has high suppression degree to secondary harmonic waves, and a good far-end suppression performance is realized. The filtering device in the embodiment is mainly used as a duplexer of a transceiver module of a base station.

The invention discloses a low temperature co-fired ceramic amplitude limiting filter which comprises an LTCC substrate, an outer metal shell device and an outer metal shell, wherein a passive device is arranged inside the LTCC substrate. An active element is arranged on the surface of the LTCC substrate. The active element comprises two PIN diodes. The positive electrodes of the diodes are connected to the two ends of a main transmission line with 90-degree phase shifting in parallel through microstrip lines. The negative electrodes of the diodes are connected with the ground through metal via holes. A band-pass filter is arranged inside the LTCC substrate in an embedded mode. According to the LTCC amplitude limiting filter, layout packaging is carried out through the multi-layer-ceramic substrate based on the LTCC technology, innovative design is carried out on a circuit structural model and the packaging technology, the miniaturized design aim is achieved to the great degree, and meanwhile the LTCC amplitude limiting filter solves the problem that a traditional device does not have the circuit-protection amplitude limiting function, and can be widely used in microwave receiving systems.

A battery pack and method of cooling a battery pack. In one form, the battery pack is an assembly made up of numerous battery cells arranged within numerous modules. Cooling channels that receive cooling fluid from a ducted supply are placed between adjacent cells or cooling plates within each of the modules. The ducted supply includes beads or related area-increasing undulations that are designed to improve both the stiffness of the ducting as well as the uniformity of the flow rates of individual cooling channels within each of the modules. In one form, the pressure-enhancing beads are placed in an inlet portion of the ducting that is adjacent a forward portion of one or more of the sequentially-encountered modules in order to promote a more equitable distribution of the cooling fluid between the various cooling channels within each of the modules.

The invention provides improvements in the color protection properties of detergents and cleaning agents during their utilization for washing or cleaning colored textile fabrics. Specific polycarbonate-, polyurethane- and/or polyurea-polyorganosiloxane compounds or a precursor compound thereof containing specific reactive groups, which can be used for the production of the polycarbonate-, polyurethane- and/or polyurea-polyorganosiloxane compounds, are utilized.

A lubricating oil composition having a sulfur content of up to about 0.4 wt. % and a sulfated ash content of up to about 0.5 wt. % as determined by ASTM D874 is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; (b) at least one oil-soluble or dispersed oil-stable boron-containing compound having no more than about 600 ppm of boron, based upon the total mass of the composition; and (c) at least one oil-soluble or dispersed oil-stable molybdenum-containing compound having no more than about 800 ppm of molybdenum, based upon the total mass of the composition; wherein the lubricating oil composition has a ratio of sulfur to molybdenum of about 5:1 to about 500:1.

The invention belongs to the technical field of frequency selective surfaces, provides a quarter-mode substrate integrated waveguide frequency selective surface with high parasitic passband suppression, and aims at solving the problem of low parasitic passband suppression degree of the frequency selective surface structure provided by the prior art under the premise of ensuring high selectivity of the substrate integrated waveguide frequency selective surface. The substrate integrated waveguide frequency selective surface comprises a first metal copper-clad layer, a dielectric layer and a second metal copper-clad layer, which are sequentially stacked from top to bottom, wherein L-shaped gaps with the same sizes are etched on the first metal copper-clad layer and the second metal copper-clad layer along the edges; each L-shaped gap comprises a shot side and a long side; the short side of the L-shaped gap in the first metal copper-clad layer is formed correspondingly to the long side of the L-shaped gap in the second metal copper-clad layer; and the corresponding long side is formed correspondingly to the short side. According to the quarter-mode substrate integrated waveguide frequency selective surface with high parasitic passband suppression, the parasitic passband suppression degree of the frequency selective surface structure is effectively improved under the premise of ensuring high selectivity of the substrate integrated waveguide frequency selective surface.

The invention relates to a filtering-integration single-pole double-throw switch and a microstrip-line filtering-integration single-pole double-throw switch. A parallel LC resonance circuit, which does not load a switch circuit, of a common stage and two sets of parallel LC resonance circuits, which load switch circuits, of an intermediate stage are connected with parallel LC resonance circuits of a last stage through four coupling capacitors to form two signal circulation paths; and under control of direct-current bias voltage of the same absolute value and opposite polarity, the one signal circulation path shows a low-loss and high-selectivity band-pass filtering characteristic, and the other signal circulation path shows a high-suppression stopband characteristic in a wider frequency range, and thus a filtering-integration single-pole double-throw switch function is formed. The switches have the advantages that: two component functions of the switches and a filter are fused; a circuit is simple and compact in size; a conduction state has a steep broadband band-pass filtering characteristic; a cut-off state has a high-suppression full-resistance characteristic; high isolation is provided between ports, and a higher suppression function is provided for harmonics in the wider frequency range.

The invention develops a developed a thermosensitive injectable hydrogel based on HA and a copolymer of polyethylene oxide (PEO) and polypropylene oxide (PPO), which has a gel formation temperature from 30° C. to 37° C. The thermosensitive injectable hydrogel of the invention provides a potential drug delivery system that can increase therapeutic efficacy of the drug.

In certain aspects, the present disclosure provides compositions and methods for inhibiting activity of TGFβ superfamily ligands, particularly ligands such as GDF8, GDF11, activin A, activin B, activin C and activin E, in vertebrates, including rodents and primates, and particularly in humans. In some embodiments, the compositions of the disclosure may be used to treat or prevent diseases or disorders that are associated with abnormal activity of a follistatin-related polypeptide and/or a follistatin ligand.

An embodiment of the present application discloses a radio frequency circuit and an electronic device. The radio frequency circuit comprises a radio frequency transceiver, an antenna, a first switch and a short-circuit branch impedance converter. The RF transceiver is connected with the antenna to form a path, one end of the short-circuit branch impedance converter is connected with the path through the first switch, and the other end of the short-circuit branch impedance converter is directly grounded; wherein the first switch is used for controlling the short-circuit branch impedance converter to enter the working state or to exit the working state; When the first switch is closed, a short-circuit branch impedance converter performs harmonic suppression processing on a first frequency band radio frequency signal transmitted by the radio frequency transceiver, conducts even harmonic signals in the first frequency band radio frequency signal to ground, so that the antenna transmits outa main frequency signal after suppressing the even harmonic signals in the first frequency band radio frequency signal. Thus, even harmonics can be suppressed without increasing the cost of materials.

Analysis of biological small molecules such as toxins, spores or cells is achieved by miniature mass spectrometer apparatus and apparatus attached thereto for vaporizing and ionizing a liquid sample fed into an evacuated vaporization chamber as an electrospray. The mass spectrometer apparatus includes: a collimation chamber, a repeller assembly, an internal ionization chamber, a mass filter and ion separation chamber, a drift space region, and a multi-channel ion detection array so as to permit the collection and analysis of ions formed over a wide mass range simultaneously. The vaporization chamber includes an output port adjacent the input to the collimation chamber so as to maximize the amount of vaporized material being fed into the mass spectrometer apparatus.

The invention discloses a millimeter wave dual-passband filter and a design method therefor. The millimeter wave dual-passband filter comprises a first PCB and a second PCB that are adhered to each other through a bonding layer, an SIW filter arranged on the first PCB and the second PCB, and a lower sideband filter arranged on the lower surface of the first PCB; the SIW filter comprises a copper coating layer arranged on the upper surface of the first PCB, a copper coating layer arranged on the lower surface of the second PCB, and a metal via hole and an inductive window that are formed in the copper coating layer on the upper surface of the first PCB and the copper coating layer on the lower surface of the second PCB and penetrating through the first PCB and the second PCB; and a blind hole for conducting the copper coating layer on the upper surface of the first PCB with the lower sideband filter is formed in the copper coating layer on the upper surface of the first PCB.

The invention discloses a new balance-non-balance filtering power divider based on ring resonators. The filtering power divider includes an upper layer microstrip structure, an intermediate layer dielectric slab and lower layer grounding metal, wherein the upper layer microstrip structure includes two square ring resonators, two microstrip lines which connect the two square ring resonators, one isolation resistor, one metalized through hole, and four input/output port microstrip feed lines, wherein each ring resonator is formed by two microstrip lines and two parallel coupling lines; and the two ring resonators are connected through the two microstrip lines, and the left side microstrip line introduces transmission zero, thus improving the out-of-band rejection degree, and the isolation resistor is loaded at the midpoint of the right side microstrip line and the lower layer grounding metal is connected, thus realizing isolation of the two output ports. The new balance-non-balance filtering power divider based on ring resonators has the advantages of being multifunctional, being high in common mode rejection degree, being simple in structural design, being preferable in electric performance, and being easy to realize circuit integration and system packaging.

The embodiment of the invention discloses a dielectric filter with steep out-of-band rejection and an antenna, and belongs to the technical field of communication. The dielectric filter comprises a body, wherein the body is loaded with six resonant cavities which are connected in sequence; a blind hole is loaded on a cross coupling window between the second resonant cavity and the fifth resonant cavity in the six resonant cavities, the blind hole is used for realizing negative cross coupling, and the negative cross coupling forms two transmission zero points; and the first resonant cavity andthe sixth resonant cavity in the six resonant cavities realize positive cross coupling, and the positive cross coupling forms two transmission zero points. In the embodiment of the invention, the whole dielectric filter can form four transmission zero points, so that the out-of-band rejection is steeper. Because no negative cross coupling is loaded on the transmission main path of the dielectric filter, the overall insertion loss of the dielectric filter is low, and the out-of-band rejection degree is higher.

The invention discloses an integrated multi-antenna and multiplexer module device of an MIMO system base station. A circuit of the device comprises a patch antenna set, a coplanar waveguide electric powersupply circuit, a microwave ceramics dielectric substrate with a high dielectric constant, a ground plane of the coplanar waveguide electric powersupply circuit, and an FBAR integrated multiplexer; in the structure of the integrated multi-antenna and multiplexer module device of the MIMO system base station, the patch antenna set and the electric powersupply circuit are positioned at the top surface of the microwave ceramics dielectric substrate, the ground plane of the coplanar waveguide electric powersupply circuit and the FBAR integrated multiplexer are positioned at the bottom surface of the microwave ceramics dielectric substrate, the FBAR integrated multiplexer and the ground plane of the coplanar waveguide electric powersupply circuit are arranged at the position under the coplanar waveguide electric powersupply circuit; and the patch antenna set is connected with the FBAR integrated multiplexer through the coplanar waveguide electric powersupply circuit. The integrated multi-antenna and multiplexer module device of the MIMO system base station reduces the transmission loss and realizes the miniaturization of antennas and the multiplexer module of the MIMO system base station.

The invention discloses a passive three-balanced frequency converter which comprises a closed loop as well as a local oscillation Balun, an input Balun and an output Balun which are signal converting Baluns, wherein the closed loop is formed by sequentially connecting cathodes and anodes of four diodes end to end; the local oscillation Balun and the input Balun are both provided an input end, two balance differential signal output ends with same amplitude but and opposite phases, and an in-phase signal output end. The output Balun is provided with two balance differential signal input ends with same amplitude and opposite phases and an output end. In the four-diode closed loop, two diagonal points are respectively connected with the two balance differential signal output ends of the local oscillation Balun, while the other two diagonal points are respectively connected with the two balance differential signal output ends of the input Balun; and the in-phase signal output end of the local oscillation Balun and the in-phase signal output end of the input Balun are respectively connected with the two input ends of the balance differential signal of the output Balun.