Abstract: The invention discloses a coordination type zirconium phosphotungstate catalyst and its application in catalytic hydrogenation of furfural, belonging to the field of heterogeneous catalysis. The zirconium phosphotungstate catalyst prepared by the invention not only has good catalytic effect on the conversion of furfural to furfuryl alcohol, but also has mild reaction conditions. The yield of solid line furfuryl alcohol can be 98% if it can be reacted for 1 h at 120 ° C., and the amount of catalyst is less, which greatly reduces the energy consumption in the prior art. In addition, the zirconium phosphotungstate prepared by the invention is easy to separate, has good stability for catalyzing the hydrogenation of furfural to furfuryl alcohol, and is a new, efficient and green catalyst.

Abstract: A full-automatic detection apparatus and system for important zoonotic pathogen, and a control method therefor. The full-automatic detection apparatus for important zoonotic pathogen includes: a base capable of moving; an air collection device, configured to collect a to-be-detected sample in air along with the movement of the base; a nucleic acid detection and analysis device, configured to detect the to-be-detected sample collected by the air collection device to determine whether an infectious pathogen exists in the to-be-detected sample; an intelligent mobile device, configured to plan and control a moving path of the base; and a control device, configured to control the intelligent mobile device to plan and control the moving path of the base and to control a sampling period of the air collection device according to a control instruction of the terminal, and transmit a detection result from the nucleic acid detection and analysis device to the terminal.

Abstract: Methods for determination of risk, previous history and/or presence of a betaretrovirus infection in a subject are described herein. Said methods may comprise incubating a biological sample from the subject, the biological sample comprising immune effector-producing cells, with one or more betaretrovirus-specific epitopes, the betaretrovirus-specific epitopes comprising at least 7 contiguous amino acids according to any one of SEQ ID Nos. 1-36, and measuring the production of immune effectors by the immune effector-producing cells, wherein production of the immune effectors by the immune effector-producing cells determines risk and/or presence of betaretrovirus infection in the subject. Isolated peptides and kits for carrying out the methods are also described.

Abstract: Methods for determination of risk, previous history and/or presence of a betaretrovirus infection in a subject are described herein. Said methods may comprise incubating a biological sample from the subject, the biological sample comprising immune effector-producing cells, with one or more betaretrovirus-specific epitopes, the betaretrovirus-specific epitopes comprising at least 7 contiguous amino acids according to any one of SEQ ID Nos. 1-36, and measuring the production of immune effectors by the immune effector-producing cells, wherein production of the immune effectors by the immune effector-producing cells determines risk and/or presence of betaretrovirus infection in the subject. Isolated peptides and kits for carrying out the methods are also described.

Abstract: A method for evaluating brittleness of a deep shale reservoir and a computer readable storage medium. The method includes determining a Rickman brittleness index of the deep shale reservoir and determining an effective pressure of the deep shale reservoir according to a pore pressure and an overlying formation pressure of the deep shale reservoir. The Rickman brittleness index is adjusted to obtain the brittleness index of the deep shale reservoir according to an exponential relationship of the brittleness index with the effective pressure of the deep shale reservoir. Inherent properties, such as rock brittle mineral content and the like, are better indicated by the Rickamn brittleness index, and then the brittleness index of the deep shale reservoir is obtained by utilizing the exponential relationship of the brittleness index with the effective pressure of the deep shale reservoir, to realize reasonable evaluation for the brittleness of the deep shale reservoir.

Abstract: Methods for determination of risk, previous history and/or presence of a betaretrovirus infection in a subject are described herein. Said methods may comprise incubating a biological sample from the subject, the biological sample comprising immune effector-producing cells, with one or more betaretrovirus-specific epitopes, the betaretrovirus-specific epitopes comprising at least 7 contiguous amino acids according to any one of SEQ ID Nos. 1-36, and measuring the production of immune effectors by the immune effector-producing cells, wherein production of the immune effectors by the immune effector-producing cells determines risk and/or presence of betaretrovirus infection in the subject. Isolated peptides and kits for carrying out the methods are also described.

Abstract: A method of monitoring a network is provided that includes receiving a stream of samples having respective network delay values; defining at least one first group of samples having a size defined by a window size; determining respective first network delay characteristics for the first groups based on the network delay values corresponding to the respective samples included in the corresponding group; applying a first test to the first network delay characteristic determined for the respective first groups; adjusting the window size based on a result of the first test associated with the respective first groups; using the adjusted window size, define respective second groups of samples having samples of the stream of samples subsequent to the samples included in the at least one first group; determining a second network delay characteristic for the respective second groups; applying a second test to the second network delay characteristics; and determining whether to generate an alert notification based on a

Abstract: A method of monitoring a network is provided that includes receiving a stream of samples having respective network delay values; defining at least one first group of samples having a size defined by a window size; determining respective first network delay characteristics for the first groups based on the network delay values corresponding to the respective samples included in the corresponding group; applying a first test to the first network delay characteristic determined for the respective first groups; adjusting the window size based on a result of the first test associated with the respective first groups; using the adjusted window size, define respective second groups of samples having samples of the stream of samples subsequent to the samples included in the at least one first group; determining a second network delay characteristic for the respective second groups; applying a second test to the second network delay characteristics; and determining whether to generate an alert notification based on a

Abstract: An external cavity diode laser system includes a thin film filter. The output facet of the laser diode is coated with a partial reflection coating and the cavity side facet is coated with an anti-reflection coating. A roof-top prism or corner cube retroreflector serves as the laser cavity end reflector and provides stability of the wavelength of the output over time. The laser cavity lies between the partial reflective coated facet of the laser diode and retroreflector. A collimating lens and a thin film filter are located between the end reflector and the laser diode cavity side facet. The lasing wavelength can be adjusted during either manufacture or operation by tilting the filter. Also included is thermal compensation in the mounting for the retroreflector to compensate for thermal movement of the laser system cavity.

Abstract: A tunable laser comprising: a foundation including a first side and an oppositely facing second side and including a hole extending from the first side to the second side; a tuning assembly including a base, a fine tuning arm and a rotational flex bearing disposed adjacent the first side of the foundation; wherein the base is disposed adjacent to the first side of the foundation; wherein one end of the flex bearing is secured to the base; wherein the other end of the flex bearing is secured to the fine tuning arm; wherein a portion of the fine tuning arm extends at least partially into the hole; an external cavity laser including a gain medium, a dispersion medium and a reflective member disposed adjacent to the second side of the foundation; wherein the gain medium and the dispersion medium grating are secured in a fixed relation relative to the each other; wherein the reflective member is secured to the portion of the arm extending into the hole; and a piezoelectric device with one end secured to the base a