Abstract: A biochar is produced by co-pyrolysing an aquatic plant enriched with heavy metals with a clay mineral, and the aquatic plants themselves have high enrichment and adsorb heavy metals in contaminated water; heavy metals are in situ adsorbed, and are coated or enriched in the biochar, therefore extending the migration time of heavy metals, which are also very stable; attapulgite and montmorillonite as clay minerals are loaded in the biochar during the preparing process; heavy metals contained in the biochar play a catalytic role, and synergy with activated attapulgite, therefore increasing the reliability of the biochar, and effectively reducing the ecological effectiveness and potential risk of heavy metals in the biochar.

Abstract: Provided are pyrimidine aromatic ring compounds. Specifically provided is a compound as represented by formula (II) or a pharmaceutically acceptable salt thereof.

Abstract: The present application relates to an LED epitaxial structure and the preparation method and application thereof. The LED epitaxial structure comprises a first multiple-quantum-well light-emitting layer and a second multiple-quantum-well light-emitting layer. The first multiple-quantum-well light-emitting layer comprises a first shoes layer, a first well layer, a first cap layer, and a first Barrier layer epitaxially grown from bottom to top in sequence. The second multiple-quantum-well light-emitting layer comprises a second shoes layer, a second well layer, a second cap layer, and a second Barrier layer epitaxially grown from bottom to top in sequence. The technical solutions disclosed in the present application can solve the problem that the 365 nm to 375 nm wave band LED would emit yellow light.

Abstract: The invention provides a 7-ethyl-10-hydroxycamptothecin drug precursor with fluorescence activity and a preparation method and use thereof. The method involves that a carboxyl group of a boron dipyrromethene dye molecule is condensed with a hydroxyl group at the 10 position of 7-ethyl-10-hydroxycamptothecin, yielding a 7-ethyl-10-hydroxy-camptothecin drug precursor (BDP-SN38) with fluorescent activity. BDP-SN38 shows good solubility and stability in most pharmaceutically acceptable solvents. Compared with SN38, BDP-SN38 exhibits comparable antitumor activity, has high tumor uptake capacity, and produces strong green fluorescence with the excitation of visible light, thus providing fluorescence-guided bioimaging and further treatment of residual tumors after drug treatment, and having good application prospects in the research of integrated diagnosis and treatment and effective tumor treatment.

Abstract: A process for producing a heavy metal mediated biochar composite using silicate solidification. Hydrocharis dubia has excellent enrichment of manganese ions in sewage, and is used to treat sewage water to adsorb heavy metals such as lead, manganese and zinc contained in the sewage water into roots, stems and leaves thereof, which are pyrolysed in stages at high temperature with activated red mud and bentonite prior to blending with zeolites, to produce said heavy metal mediated biochar composite; the process significantly extends the migration time of heavy metals, increases the stability of heavy metals and reduces the risk of environmental pollution by heavy metal leakage.

Abstract: In certain aspects, a pattern generation system includes a pattern generator, a memory, a pin function register, a pin function mapper, and a set of source selectors. The pattern generator generates a plurality of source patterns. The memory stores a lookup table set. The lookup table set describes a mapping relationship between the plurality of source patterns and a set of test channels, and is indexed based on a pin function index. The pin function register stores a value of the pin function index. The pin function mapper executes a pin-mapping operation to generate a set of source selection signals based on the value of the pin function index and the lookup table set. Each source selector selects and outputs a source signal from the plurality of source patterns to a corresponding test channel based on a corresponding source selection signal received from the pin function mapper.

Abstract: A porous biochar for improving heavy pollution and a method for producing the same. Said porous biochar is prepared as follows: arrowhead, which has excellent enrichment of lead, is used to absorb heavy metal lead in polluted water or artificial wetlands, simultaneously absorb heavy metal cadmium, thereafter is dried and treated as a biomass, and then the biomass is calcined in stages with a passivating agent in a high temperature environment, so as to heavy metals such as lead and cadmium be stably coated or enriched in a biochar, which is mixed with Pseudomonas aeruginosa having high resistant, to obtain the porous biochar; the porous biochar has high specific surface area, high porosity and excellent mechanical properties, is very stable under different acid-base environments and oxidizing conditions.

Abstract: Provided are a series of 5,6-dihydrothieno[3,4-h]quinazoline compounds as represented by formula (P) and pharmaceutically acceptable salts thereof, and the use of the compounds or pharmaceutically acceptable salts thereof in the preparation of solid tumor drugs, such as solid tumor drugs associated with selective PLK1 inhibitors.

Abstract: A composite biochar for controlling heavy metal pollution and a process for producing the same, in particular enrichment of heavy metals such as arsenic and lead in soil with centipede grass, thereafter centipede grass is sintered with hydroxyapatite, sepiolite and chitosan, and compounded with microorganisms to produce said composite biochar; through the process of the present invention, heavy metals such as arsenic and lead are stably enriched or coated in said composite biochar, significantly reducing the potential hazard of arsenic and lead to the environment, and also providing new developmental ideas for treating heavy metal biomass.

Abstract: The present invention relates to the technical field of photosensitizers, and particularly to a near-infrared nano-photosensitizer and a preparation method and use thereof. The near-infrared nano-photosensitizer in the present invention is modified by conjugation extension of the boron dipyrromethene core, achieving absorption and emission spectra close to the near-infrared region. A polyfluoroalkyl group and a polyethylene glycol group are introduced to the boron dipyrromethene structure to obtain an amphiphilic photosensitizer. By means of the strong fluorine-fluorine interaction between the polyfluoroalkyl group and the hydrophilic interaction of the polyethylene glycol group, a nano-photosensitive micelle with an ultra-low CMC value is ultimately constructed. Boron dipyrromethene is induced by fluorine-fluorine interaction to undergo J-aggregation, causing the maximum absorption peak to red-shift to the near-infrared region, beneficial to the deep phototherapy of tumors.

Abstract: A class of pyrimidoheterocyclic compounds, and specifically disclosed is a compound represented by formula (III) or a pharmaceutically acceptable salt thereof.

Abstract: A pyrrolopyridine compound and an application thereof. Specifically disclosed is a compound represented by formula (P) or a pharmaceutically acceptable salt thereof.

Abstract: A controllable downhole drilling and completion tool separating device and their method of use are provided. The device includes an upper mandrel connector, an outer sleeve, a claw clamp sleeve, a claw clamp locking ring, a mandrel sleeve, a lower connector, a piston ring and a pressure bearing ball. The upper end of the lower connector is on the outer side of the upper connector in a sleeving mode. A first annular cavity is between the lower connector and the upper connector. The piston ring is on the outer side of the upper connector in a sleeving mode and located in the first annular cavity. The claw clamp sleeve and the outer sleeve are sequentially arranged on the outer side of the upper connector in a sleeving mode. A second annular cavity is communicated with the first annular cavity and formed between the claw clamp sleeve and the upper connector.

Abstract: A class of pyrimidoheterocyclic compounds, and specifically disclosed is a compound represented by formula (III) or a pharmaceutically acceptable salt thereof.

Abstract: A method and an apparatus for sharing a delivery box are provided. The method may include: receiving item sending-receiving information indicating delivering using a delivery box, where the item sending-receiving information includes target address information used to indicate a start fixed position of using the delivery box to carry the item; determining a matching piece from a preset set of pieces of delivery box information, where the position information and the usage status information in the matching piece meet the preset matching condition, and the matching piece includes the position information, the first identification information and the usage status information used to represent whether the delivery box indicated by the corresponding first identification information is occupied; and updating the usage status information in the matching piece to the information representing that the delivery box is occupied.

Abstract: Provided are a main control system and a device for a nuclear magnetic resonance logging while drilling tool, the system includes: a digital signal processor, an auxiliary measurement module, a pulse signal generation module and a memory disposed in a downhole drilling tool; wherein the digital signal processor is communicatively connected to an upper computer arranged on the ground, the auxiliary measurement module and the pulse signal generation module respectively; the memory is communicatively connected to the pulse signal generation module. The main control system and a device for a nuclear magnetic resonance logging while drilling tool achieve the effect of improving the accuracy of the logging data.

Abstract: Provided is a FGFR inhibitor, designating a compound represented by formula (I) or a pharmaceutically acceptable salt thereof. Also provided is the application of a drug for treating solid tumors, such as FGFR related diseases.

Abstract: The present invention discloses modified epoxy acrylates and the solder resist containing the epoxy modified acrylates, belonging to the synthetic resin field. In this invention, modified epoxy acrylates are prepared by introducing long fatty hydrocarbon chain as the branched chain into the carboxylated epoxy acrylates. The as-prepared solder resist containing this modified epoxy acrylates maintains the excellent property of photosensitive solder resist such as good adhesion, hardness, solvent resistance and weather resistance which facilities sensitivity and alkaline development during exposure simultaneously. This has led to good water resistance, electrical insulation of the cured products. Furthermore, the cured product also shows good flexibility which improves its application in photosensitive imaging ink materials.

Abstract: The present invention discloses modified epoxy acrylates and the solder resist containing the epoxy modified acrylates, belonging to the synthetic resin field. In this invention, modified epoxy acrylates are prepared by introducing long fatty hydrocarbon chain as the branched chain into the carboxylated epoxy acrylates. The as-prepared solder resist containing this modified epoxy acrylates maintains the excellent property of photosensitive solder resist such as good adhesion, hardness, solvent resistance and weather resistance which facilities sensitivity and alkaline development during exposure simultaneously. This has led to good water resistance, electrical insulation of the cured products. Furthermore, the cured product also shows good flexibility which improves its application in photosensitive imaging ink materials.

Abstract: Provided is an array antenna driving method and device for a three-dimensional scanning nuclear magnetic resonance imager, wherein each antenna to be operated is driven to transmit a nuclear magnetic pulse signal by receiving a control command sent by a control system; parsing the control command to generate a pulse transmission timing signal and an antenna switching control signal; processing an externally inputted high voltage signal according to the pulse transmission timing signal to output high voltage radio frequency pulses of a plurality of channels; and selecting a high voltage radio frequency pulse of at least one channel and the antenna to be operated in the nuclear magnetic resonance pulse array antenna according to the antenna switching control signal, and superposing the selected high voltage radio frequency pulse. The device of the present invention can improve multi-layer slice information detection of signals in circumferentially different azimuth zones.