Abstract: A method for testing burning performance of a dark-colored cigarette using a dark-colored cigarette paper is provided. The dark-colored cigarette paper has a grayscale less than 255. The method includes: simulating, by a robotic arm, a cigarette smoking process and environment; acquiring, by a full-vision camera system, an image of a burn line and ash column region of the dark-colored cigarette; and analyzing a burning performance indicator of the dark-colored cigarette according to coordinate information of the burn line and ash column region. The method is based on a surface reflection characteristic of the dark-colored cigarette paper and a principle of optical reflection to light and highlight an edge of the dark-colored cigarette sample by a light source at a certain angle from a side. In this way, the method forms a chromatic aberration to localize the dark-colored cigarette sample, thereby testing the burning performance of the dark-colored cigarette sample.

Abstract: A method for comprehensively analyzing and/or evaluating cigarette burning quality index is disclosed. The steps include collecting cigarette burning quality index data, filtering the cigarette burning quality index data, standardizing cigarette data, and measuring cigarette burning quality. The importance of the cigarette burning quality indicators can also be evaluated. The method for comprehensively analyzing and/or evaluating cigarette burning quality indicators can reflect general laws more accurately by maintaining the sample distribution through a singularity detection method, and analyzing correlations of each index with cigarette performance from multiple perspectives, to fuse them into a comprehensive measurement value. The importance ranking and weight of indicators can be obtained more completely and stably.

Abstract: A backpack power supply device and a backpack tool system is provided. The backpack power supply device includes: a backpack assembly, a battery pack, a control panel and a power cable. Wherein, the battery pack and the control panel are arranged on the backpack assembly, and the control panel is electrically connected with the battery pack. A first end of the power cable is electrically connected with the battery pack and the control panel, and a second end is provided with a connecting terminal that may be electrically connected with multiple power tools. The power tool adjusts its operating state according to a signals received from the control panel. The backpack power supply device and backpack tool system may solve problems of high cost of the conventional backpack garden tool systems and poor interchangeability of power tools.

Abstract: A method for testing burning performance of a dark-colored cigarette using a dark-colored cigarette paper is provided. The dark-colored cigarette paper has a grayscale less than 255. The method includes: simulating, by a robotic arm, a cigarette smoking process and environment; acquiring, by a full-vision camera system, an image of a burn line and ash column region of the dark-colored cigarette; and analyzing a burning performance indicator of the dark-colored cigarette according to coordinate information of the burn line and ash column region. The method is based on a surface reflection characteristic of the dark-colored cigarette paper and a principle of optical reflection to light and highlight an edge of the dark-colored cigarette sample by a light source at a certain angle from a side. In this way, the method forms a chromatic aberration to localize the dark-colored cigarette sample, thereby testing the burning performance of the dark-colored cigarette sample.

Abstract: A chaotic stirring device combining plasma arc smelting and permanent magnet including a furnace body; the furnace body is provided therein with a water-cooled copper crucible; the center of an upper surface of the water-cooled copper crucible is a groove for placing raw metals, and the water-cooled copper crucible is internally a hollow cavity; a return pipe is disposed directly below the groove in the hollow cavity; an upper end of the return pipe is vertical upward, and is horizontally provided with a filter screen; a spherical magnet is placed between the filter screen and the groove; one side of the water-cooled copper crucible is provided with a first water inlet pipe and a first water outlet pipe; the first water inlet pipe is connected to the hollow cavity, and the first water outlet pipe is connected to the bottom of the return pipe.

Abstract: The present invention related to novel morphinans, compositions comprising the novel morphinans, and their uses as agonists of the kappa opioid receptor.

Abstract: The present invention related to novel morphinans, compositions comprising the novel morphinans, and their uses as agonists of the kappa opioid receptor.

Abstract: The present invention discloses a device for plasma arc melting through magnetostatic soft-contact stirring and compounding, which includes a furnace body, where a water-cooled copper crucible and a tungsten electrode are mounted in the furnace body, the tungsten electrode is located above the water-cooled copper crucible, and a groove for containing a metal raw material is opened in the water-cooled copper crucible; and a drive shaft penetrates through a side wall of the water-cooled copper crucible, one end, located at the exterior of the water-cooled copper crucible, of the drive shaft is connected with a stepper motor, one end, located in the water-cooled copper crucible, of the drive shaft is sleeved with two rotary tables, magnets having reverse magnetisms are interleaved in the rotary table, and the rotary tables are located on two sides of the groove.

Abstract: The present invention related to novel morphinans, compositions comprising the novel morphinans, and their uses as agonists of the kappa opioid receptor.

Abstract: A chaotic stirring device combining plasma arc smelting and permanent magnet including a furnace body; the furnace body is provided therein with a water-cooled copper crucible; the center of an upper surface of the water-cooled copper crucible is a groove for placing raw metals, and the water-cooled copper crucible is internally a hollow cavity; a return pipe is disposed directly below the groove in the hollow cavity; an upper end of the return pipe is vertical upward, and is horizontally provided with a filter screen; a spherical magnet is placed between the filter screen and the groove; one side of the water-cooled copper crucible is provided with a first water inlet pipe and a first water outlet pipe; the first water inlet pipe is connected to the hollow cavity, and the first water outlet pipe is connected to the bottom of the return pipe.

Abstract: The present invention discloses a device for plasma arc melting through magnetostatic soft-contact stirring and compounding, which includes a furnace body, where a water-cooled copper crucible and a tungsten electrode are mounted in the furnace body, the tungsten electrode is located above the water-cooled copper crucible, and a groove for containing a metal raw material is opened in the water-cooled copper crucible; and a drive shaft penetrates through a side wall of the water-cooled copper crucible, one end, located at the exterior of the water-cooled copper crucible, of the drive shaft is connected with a stepper motor, one end, located in the water-cooled copper crucible, of the drive shaft is sleeved with two rotary tables, magnets having reverse magnetisms are interleaved in the rotary table, and the rotary tables are located on two sides of the groove.

Abstract: A method for producing a ?-enriched protected decitabine comprising: a) coupling a protected 2-deoxy-ribofuranose with a protected 5-azacytosine in the presence of a catalyst to form a reaction mixture comprising the protected decitabine of formula I; and b) quenching the reaction mixture of step a) with a base. The ?-enriched protected decitabine so made may be deprotected to produce a decitabine product in a high yield and purity.

Abstract: A method for producing a ?-enriched protected decitabine comprising: a) coupling a protected 2-deoxy-ribofuranose with a protected 5-azacytosine in the presence of a catalyst to form a reaction mixture comprising the protected decitabine of formula I; and b) quenching the reaction mixture of step a) with a base. The ?-enriched protected decitabine so made may be deprotected to produce a decitabine product in a high yield and purity.

Abstract: A 9V rechargeable battery comprising a plurality of column cells connected in series and enclosed by a container and a cover with a negative terminal and a positive terminal. Said container (1) further comprises a pair of lateral sidewalls formed with openings and another pair of lateral sidewalls formed with recesses so as to receive said cells snugly.

Abstract: A 9V rechargeable battery comprising a plurality of column cells connected in series and enclosed by a container and a cover with a negative terminal and a positive terminal. Said container (1) further comprises a pair of lateral sidewalls formed with openings and another pair of lateral sidewalls formed with recesses so as to receive said cells snugly.