Abstract: The invention discloses an organic-inorganic nanocomposite gel sealing agent and oil-based drilling fluid. The sealing agent used for the oil-based drilling fluid is organic-inorganic nanocomposite gel, and the synthetic raw materials of the organic-inorganic nanocomposite gel includes molybdenum disulfide, 2-ethyl acrylic acid, N, N-dimethylacrylamide and N,N-methylene bisacrylamide; the drilling fluid includes the organic-inorganic nanocomposite gel provided by the invention.

Abstract: The ceramic material element includes a main phase of orthorhombic perovskite-structure and a secondary phase due to a heat treatment within 700° C. to 850° C. for a first period followed by a second period within 1140° C. to 1170° C., from a mixture of materials A1, A2, A3, A4 and A5 excluding lead, the materials A1, A2, A3, A4 and A5 having molar ratios R1, R2, R3, R4 and R5, respectively, where the material A1 comprises potassium, the material A2 comprises sodium, the material A3 comprises barium, the material A4 comprises niobium, and the material A5 comprises nickel, and the molar ratio R1 is in a range 0.29-0.32, the molar ratio R2 is in a range 0.20-0.23, the molecular ratio R3 is in a range 0.01-0.02, the molar ratio R4 is in a range 0.54-0.55, and the molar ratio R5 is in a range 0.006-0.011, while a relative ratio of R1/R2 is in the range 1.24-1.52, and a relative ratio of R4/R2 is in the range 2.32-2.62.

Abstract: Disclosed are a high-temperature-resistant tertiary amine-grafted silica nano-plugging agent and water-based drilling fluids, relating to oil-gas field drilling. The nano-plugging agent is prepared from a hydrazine compound, a diallyl compound, an enamine compound, silica particle, and an amino-containing silane coupling agent by stepwise reaction. The nano-plugging agent has a grain size of 58-280 nm.

Abstract: The present disclosure relates to genetically modified non-human animals that express a human or chimeric (e.g., humanized) major histocompatibility complex (MHC) protein complex, and methods of use thereof.

Abstract: A system for a deep-sea planktonic microorganism in-situ concentration, temperature maintaining and pressure maintaining sampling is provided and includes a sampling cylinder body with double layer structures, the sampling cylinder body is provided with a plug-shaped inner cavity, the plug-shaped inner cavity is provided with a transfer water outlet and a water inlet connected to a water inlet component, the plug-shaped inner cavity is connected to an end cover, the plug-shaped inner cavity is connected to a filter part, the sampling cylinder body is provided with a sampling water outlet, the sampling water outlet is respectively connected to a pressure maintaining device and a water outlet pipe, a temperature maintaining material layer and a temperature control component are connected between the double layer structures, and the temperature control component is electrically connected to a controller. The system can complete sampling on the premise of maintaining in-situ pressure of samples.

Abstract: Provided is a solder strip. A cross section of the solder strip includes a base portion and a reflective portion arranged above the base portion. The reflective portion includes a top edge, a first side edge and a second side edge. A first angle is formed between the first side edge and an extension line of the top edge. A second angle is formed between the second side edge and the extension line of the top edge. The first angle and the second angle are greater than 42.5° .

Abstract: This disclosure relates to genetically modified immunodeficient animals which express a human or chimeric (e.g., humanized) SIRP? and/or human or chimeric (e.g., humanized) CD47, and methods of use thereof.

Abstract: Provided are a humanized transgenic non-human animal, especially a rodent, in particular a transgenic mouse containing a human interleukin 17A (IL-17A) gene, a human gene 17RA (IL-17RA) and/or a human TNF-alpha gene, and a preparation method therefor and the use thereof.

Abstract: The present disclosure relates to genetically modified non-human animals that express a human or chimeric (e.g., humanized) LAG3, and methods of use thereof.

Abstract: A method and device for presenting a prediction model, and a method and device for adjusting a prediction model. The method for presenting a prediction model includes: obtaining at least one prediction result of a prediction model for at least one prediction sample; obtaining at least one decision-making tree training sample for training a decision-making tree model according to the at least one prediction sample and the at least one prediction result, the decision-making tree model being used for fitting the prediction model; training the decision-making tree model by using at least one decision-making tree training sample; and visually presenting the trained decision-making tree model. By means of the method, a prediction model hard to understand can be approximated to a decision-making tree model, and the approximated decision-making tree model is presented, so that a user better understands the prediction model according to the presented decision-making tree model.

Abstract: The present disclosure a leak-proof lost-circulation control water-based drilling fluid composition and preparation method and use thereof.

Abstract: The present disclosure relates to genetically modified non-human animals expressing human or chimeric (e.g., humanized) Thrombopoietin (THPO), and methods of use thereof.

Abstract: An adaptive hybrid polling technique combines an interrupt mode with a polling mode, and is based on outstanding input/output (OIO) determination to improve I/O performance and to save processor cycles. The OIO includes two types of I/O commands: (1) I/O commands submitted to storage devices for processing, and (2) I/O commands completed by the storage devices but not yet acknowledged by host software. The adaptive hybrid polling technique involves two phases to determine when to poll based on current OIO commands. In the first phase, a determination is made whether there is an adequate number of the first type of OIO commands to prepare for polling. In the second phase, a determination is made whether there is an adequate number of the second type of OIS commands to activate polling.

Abstract: The present disclosure relates to the genetically modified non-human animals that express a human or chimeric TIGIT (e.g., humanized TIGIT), and methods of use thereof.

Abstract: A preparation method of a fully adaptive modified nanographene plugging type anti-collapse drilling fluid is disclosed. A modified nanographene slurry anti-collapse agent and a water-based drilling fluid containing the modified nanographene slurry anti-collapse agent are disclosed. The preparation method includes subjecting a nanographene and a mixed acid to a first contact to obtain a mixed liquid, dropwise adding potassium chlorate into the mixed liquid under the condition of ice-bath pan to carry out a modification treatment, so as to obtain a modified nanographene, and subjecting the modified nanographene to a second contact with water to prepare a modified nanographene slurry.

Abstract: The present disclosure relates to genetically modified non-human animals that express a human or chimeric (e.g., humanized) IL10R and/or a human or chimeric (e.g., humanized) IL10, and methods of use thereof.

Abstract: The present disclosure relates to the genetically modified non-human animals that express a human or chimeric OX40, and methods of use thereof.

Abstract: The present disclosure relates to genetically modified non-human animals that express a human or chimeric (e.g., humanized) CD40, and methods of use thereof.

Abstract: The present disclosure relates to genetically modified non-human animals that express a human or chimeric (e.g., humanized) TNFR2, and methods of use thereof.

Abstract: An oil-based drilling fluid composition, includes a base fluid and a treating agent. The base fluid comprises a base oil and an inhibitor; the treating agent comprises an organic soil, a main emulsifier, an auxiliary emulsifier, a plugging agent, a weighting agent, a humectant, an alkaline regulator and a filtrate reducer. 5-25 parts by weight of the inhibitor, 5-12 parts by weight of the organic soil, 1-6 parts by weight of the main emulsifier, 2-8 parts by weight of the auxiliary emulsifier, 3-18 parts by weight of the plugging agent, 5-30 parts by weight of the weighting agent, 2-6 parts by weight of the humectant, 2-7 parts by weight of the alkaline regulator and 2-10 parts by weight of the filtrate reducer are used, based on 100 parts by weight of base oil.