Abstract: A monitoring system includes a reference station, a mobile station, a plurality of integrated sensing units, and a server. The reference station is configured to provide fixed reference coordinates to the server. The mobile station transmits multi-frequency electromagnetic wave signals to the integrated sensing units. Based on water depth and position information detected by sensors of the integrated sensing units in combination with information of electromagnetic wave signals as well as a propagation distance and time, displacement information of the integrated sensing units can be obtained. The data is transmitted to the mobile station, which further transmits the data to the server, to accomplish monitoring for the reservoir landslide water-level-fluctuation zone. Automated monitoring is achieved and the monitoring cycle covers the entire deformation and evolution phases of landslides.

Abstract: The present invention provides a novel daptomycin-producing Streptomyces strain and use thereof, the strain is a subspecies of streptomyces griseus, named Streptomyces griseus L340, and the preservation number is CGMCC17921. The genetic character and fermentation unit of the strain provided by the present invention are relatively stable, the culture and fermentation conditions are suitable for industrial production of daptomycin, and the interference of pigment in later separation and purification is eliminated. The secondary metabolite daptomycin is obtained through fermentation of the Streptomyces provided by the present invention, which has the advantages of no interference of pigment accumulation, cleaner metabolic spectrum and thus is obviously superior in later separation and purification.

Abstract: An embodiment of a system for measuring trace gas concentration is described that comprises a laser absorption spectrometer configured to detect an absorbance measure from a trace gas, as well as a temperature value and a pressure value that correspond to an environment in a gas cell; and a computer having executable code stored thereon configured to perform a method comprising: receiving the absorbance value, the temperature value, and the pressure value; defining a fitting range associated with the trace gas; applying a curve fitting model in the fitting range to the absorbance value using the temperature value and the pressure value as model parameters; and producing a concentration measure of the trace gas.

Abstract: The present invention provides a novel daptomycin-producing Streptomyces strain and use thereof, the strain is a subspecies of streptomyces griseus, named Streptomyces griseus L340, and the preservation number is CGMCC17921. The genetic character and fermentation unit of the strain provided by the present invention are relatively stable, the culture and fermentation conditions are suitable for industrial production of daptomycin, and the interference of pigment in later separation and purification is eliminated. The secondary metabolite daptomycin is obtained through fermentation of the Streptomyces provided by the present invention, which has the advantages of no interference of pigment accumulation, cleaner metabolic spectrum and thus is obviously superior in later separation and purification.

Abstract: An embodiment of a gas analyzer is described that comprises a light source configured to produce a substantially collimated first beam with a diverging angle of less than about 15 degrees; a gas cell comprising an inlet configured to introduce a gas into the gas cell, an outlet configured to remove the gas from the gas cell, and a plurality of mirrors configured to reflect the substantially collimated first beam within the gas cell; and a detector configured to generate a signal in response to the substantially collimated first beam.

Abstract: The embodiment of the invention provides a marine diesel power system comprising a diesel engine, a conformal heat exchanger with a first inlet and a first outlet thereof connected to the diesel engine and upper and lower sealing heads thereof as well as a second inlet and a second outlet for inflowing and discharging seawater, and a jet device at a second outlet of the conformal heat exchanger, wherein a first inlet, a second inlet and an outlet of the jet device are separately used for sucking seawater discharged from the second outlet, connecting to a diesel engine exhaust tube and discharging seawater and waste gas discharged from the diesel engine exhaust tube. By arranging the jet device at the second outlet, the heat exchange form of the conformal heat exchanger is changed into forced convection heat exchange, so that the heat exchange efficiency of the conformal heat exchanger is improved.

Abstract: The present invention provides a screening method of negative regulatory factors of a Streptomyces biosynthesis gene cluster, the method including: constructing a reporter system in a Streptomyces cell, which is mediated by a promoter of a self-owned target gene of the Streptomyces cell, and then randomly mutating Streptomyces with the reporter system by using a random mutation system constructed based on a transposon Himar1; intensively screening Streptomyces strains that have been subjected to random mutation to obtain a Streptomyces strain with high expression of the target gene; performing phage packaging on a genome of the Streptomyces strain with high expression of the target gene and screening out a cosmid with a random insert; and determining the position of the random insert in the genome of the Streptomyces strain with high expression of the target gene by sequencing DNAs of the cosmid.

Abstract: An embodiment of a system for measuring trace gas concentration is described that comprises a laser absorption spectrometer configured to detect an absorbance measure from a trace gas, as well as a temperature value and a pressure value that correspond to an environment in a gas cell; and a computer having executable code stored thereon configured to perform a method comprising: receiving the absorbance value, the temperature value, and the pressure value; defining a fitting range associated with the trace gas; applying a curve fitting model in the fitting range to the absorbance value using the temperature value and the pressure value as model parameters; and producing a concentration measure of the trace gas.

Abstract: Configurations herein include a novel process and apparatus for generating and maintaining sulfur trioxide gas. The generation system and process operate to provide sulfur trioxide calibration gas for calibrating sulfur trioxide detection devices. The system and process provides a known, concentration of sulfur trioxide gas via a heated catalyst, which enables accurate calibration of measurement equipment. The system functions in part by controlling temperature, amount of moisture, residence time, catalyst selection, diluting generated sulfur trioxide and by locating the sulfur trioxide generator at a point of injection of a sulfur trioxide detection system.

Abstract: Configurations herein include a novel process, system, etc., to measure a concentration of sulfur trioxide in a gas sample including sulfur trioxide, sulfur dioxide, and water. An example system can include an optical radiation source that generates an optical signal at a plurality of vibration-rotation transitions around at least one frequency selected from the group consisting of 1396.889 cm?1, 1396.908 cm?1, 1396.962 cm?1, 1397.003 cm?1, 1397.037 cm?1, 1397.047 cm?1, and 1397.052 cm?1. The optical signal is transmitted along an optical path through the gas sample. Based on adjusting a pressure of the gas sample, each of the plurality of vibration-rotation absorption transitions associated with the sulfur trioxide can be substantially isolated from interfering absorption by the sulfur dioxide and the water vapor in the gas sample. Based on a spectral analysis, the system generates a value indicative of a concentration of sulfur trioxide in the gas sample.

Abstract: Configurations herein include a novel process and apparatus for generating and maintaining sulfur trioxide gas. The generation system and process operate to provide sulfur trioxide calibration gas for calibrating sulfur trioxide detection devices. The system and process provides a known, concentration of sulfur trioxide gas via a heated catalyst, which enables accurate calibration of measurement equipment. The system functions in part by controlling temperature, amount of moisture, residence time, catalyst selection, diluting generated sulfur trioxide and by locating the sulfur trioxide generator at a point of injection of a sulfur trioxide detection system.

Abstract: According to example configurations herein, a system includes an inertial filter, a temperature controller, and analyzer. The inertial filter has multiple ports including a first port, a second port, and a third port. A sample gas flows between the first port and the third port of the inertial filter. The second port of the inertial filter outputs a portion of the gas flowing between the first port and the second port. The temperature controller controls a temperature of the inertial filter and/or the gas flowing through the inertial filter. The analyzer receives the portion of the gas flow outputted by the second port of the inertial filter and produces a value indicative of a concentration of sulfur trioxide in the portion of the gas flow.

Abstract: Configurations herein include a novel process and apparatus for generating and maintaining sulfur trioxide gas. The generation system and process operate to provide sulfur trioxide calibration gas for calibrating sulfur trioxide detection devices. The system and process provides a known, concentration of sulfur trioxide gas via a heated catalyst, which enables accurate calibration of measurement equipment. The system functions in part by controlling temperature, amount of moisture, residence time, catalyst selection, diluting generated sulfur trioxide and by locating the sulfur trioxide generator at a point of injection of a sulfur trioxide detection system.

Abstract: A water-cooled mold for continuous casting includes two water-cooled wide copper plates arranged opposite to each other in a front and back direction and two water-cooled narrow copper plates arranged opposite to each other in a left and right direction. The upper portion of the cavity of the mold is a sprue area and the lower portion of the cavity is a mold cavity area. The sprue area is gradually narrowed in the casting direction and smoothly transited into the mold cavity, corresponding to the shape of a slab to be cast. The inside surfaces of the water-cooled narrow copper plates are smooth planar surfaces. A portion of the inside surface of the water-cooled wide copper plates in the sprue area is a curved surface and another portion in the mold cavity area is a planar surface. The curved surface and the planar surface portions form a continuous smooth surface.

Abstract: Configurations herein include a novel process and apparatus for generating and maintaining sulfur trioxide gas. The generation system and process operate to provide sulfur trioxide calibration gas for calibrating sulfur trioxide detection devices. The system and process provides a known, concentration of sulfur trioxide gas via a heated catalyst, which enables accurate calibration of measurement equipment. The system functions in part by controlling temperature, amount of moisture, residence time, catalyst selection, diluting generated sulfur trioxide and by locating the sulfur trioxide generator at a point of injection of a sulfur trioxide detection system.

Abstract: According to example configurations herein, a system includes an inertial filter, a temperature controller, and analyzer. The inertial filter has multiple ports including a first port, a second port, and a third port. A sample gas flows between the first port and the third port of the inertial filter. The second port of the inertial filter outputs a portion of the gas flowing between the first port and the second port. The temperature controller controls a temperature of the inertial filter and/or the gas flowing through the inertial filter. The analyzer receives the portion of the gas flow outputted by the second port of the inertial filter and produces a value indicative of a concentration of sulfur trioxide in the portion of the gas flow.

Abstract: The invention provides a water-cooled mold for continuous casting. The mold comprises two water-cooled wide copper plates which are arranged opposite to each other in front and back direction and two water-cooled narrow copper plates which are arranged opposite to each other in left and right direction. The upper portion of the cavity of the mold is a sprue area and the lower portion of the cavity is a mold cavity area. The sprue area is gradually narrowed in the casting direction and smoothly transited into the mold cavity, corresponding to the shape of a slab to be cast. The inside surfaces of the water-cooled narrow copper plates are smooth planar surface. A portion of the inside surface of the water-cooled wide copper plates in the sprue area is a curved surface and a portion of the same in the mold cavity area is a planar surface. The curved surface portion and the planar surface portion form a continuous smooth surface.