Abstract: The present invention relates to a detection mechanism for polymerase chain reaction and a polymerase chain reaction device, wherein the detection mechanism comprises at least one excitation module group, each of the excitation module groups comprising two excitation modules for providing excitation light with two wavelengths; an excitation optical fiber, connected to the excitation modules, the excitation optical fiber transmitting the excitation light to at least one reaction tube, each of the reaction tubes receiving excitation light with two wavelengths; a receiving optical fiber, for collecting and transmitting a fluorescent signal from the reaction tube; at least one receiving module group, connected to the receiving optical fiber, each of the receiving module groups comprising two receiving modules, to respectively receive the fluorescent signal of two wavelengths from the same said reaction tube, and convert the fluorescent signal into an electrical signal for output; the detection mechanism is config

Abstract: The present disclosure relates to a battery module and a battery pack. The battery module includes a plurality of battery units connected in series; at least two electrode output connecting pieces each disposed at an output end of the plurality of battery units; a plurality of bridging busbars, each connecting two battery units spaced by one or more other battery units among the plurality of battery units; and an adjacent busbar connecting two adjacent battery units among the plurality of battery units. An electrical connection path is formed in the battery module by the electrode output connecting pieces, the bridging busbars and the adjacent busbar. The battery module according to the present disclosure is applicable in diverse situations, and capable of improving safety performance and energy density.

Abstract: The present invention relates to a detection mechanism for polymerase chain reaction and a polymerase chain reaction device, wherein the detection mechanism comprises at least one excitation module group, each of the excitation module groups comprising two excitation modules for providing excitation light with two wavelengths; an excitation optical fiber, connected to the excitation modules, the excitation optical fiber transmitting the excitation light to at least one reaction tube, each of the reaction tubes receiving excitation light with two wavelengths; a receiving optical fiber, for collecting and transmitting a fluorescent signal from the reaction tube; at least one receiving module group, connected to the receiving optical fiber, each of the receiving module groups comprising two receiving modules, to respectively receive the fluorescent signal of two wavelengths from the same said reaction tube, and convert the fluorescent signal into an electrical signal for output; the detection mechanism is config

Abstract: The present disclosure relates to provide a text input method and an electronic device, where the method includes: obtaining characters entered by a user; parsing the characters to generate and display at least one group of candidate text corresponding to the characters; obtaining an operation performed on to-be-entered text by the user, where the to-be-entered text is any one of the at least one group of candidate text; determining, according to the obtained operation, an input location that is of the to-be-entered text in entered text and that is corresponding to the operation; and inserting the to-be-entered text in the input location.

Abstract: A mesoporous silicon compound includes a mesoporous silicon phase, a metal silicide phase, and a carbon phase. The metal silicide is embedded in mesoporous silicon particles, the surfaces of which are coated with a carbon layer. A weight ratio of elemental silicon to the metal element is from 2:3 to 900:1. The pores of the mesoporous silicon particles have a size distribution from two nanometers to eighty nanometers.

Abstract: Disclosed in the invention are a silicon-carbon composite anode material for lithium ion batteries and a preparation method thereof The material consists of a porous silicon substrate and a carbon coating layer. The preparation method of the material comprises preparing a porous silicon substrate and a carbon coating layer. The silicon-carbon composite anode material for lithium ion batteries has the advantages of high reversible capacity, good cycle performance and good rate performance. The material respectively shows reversible capacities of 1,556 mAh, 1,290 mAh, 877 mAh and 474 mAh/g at 0.2 C, 1 C, 4 C and 15 C rates; the specific capacity remains above 1,500 mAh after 40 cycles at the rate of 0.2 C and the reversible capacity retention rate is up to 90 percent.

Abstract: A mesoporous silicon compound includes a mesoporous silicon phase, a metal silicide phase, and a carbon phase. The metal silicide is embedded in mesoporous silicon particles, the surfaces of which are coated with a carbon layer. A weight ratio of elemental silicon to the metal element is from 2:3 to 900:1. The pores of the mesoporous silicon particles have a size distribution from two nanometers to eighty nanometers.

Abstract: Disclosed in the invention are a silicon-carbon composite anode material for lithium ion batteries and a preparation method thereof The material consists of a porous silicon substrate and a carbon coating layer. The preparation method of the material comprises preparing a porous silicon substrate and a carbon coating layer. The silicon-carbon composite anode material for lithium ion batteries has the advantages of high reversible capacity, good cycle performance and good rate performance. The material respectively shows reversible capacities of 1,556 mAh, 1,290 mAh, 877 mAh and 474 mAh/g at 0.2 C, 1 C, 4 C and 15 C rates; the specific capacity remains above 1,500 mAh after 40 cycles at the rate of 0.2 C and the reversible capacity retention rate is up to 90 percent.