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The temperature prediction of geothermal reservoirs at different depths is to determine the key parameters such as thermal energy storage, heat output capacity, and the sustainable utilization period of geothermal reservoirs. Taking the geothermal wells in the Qiabuqia area of Gonghe Basin as an example, this study proposes a temperature prediction model for heat reservoirs under different constraints based on particle swarm optimization (PSO) and long short-term memory network (LSTM). The prediction effect of this model is verified by comparing with those of the BP model and LSTM model. The results show that the RMSE value, MAPE value and MAD value in the prediction results of the model are the smallest compared with those in BP and LSTM models, and the minimum RMSE value is only 1.192. The determination coefficient of the model is 0.929, showing a good prediction effect. This indicates that this model could realize the prediction of reservoir temperature in geothermal system, which provides references for the efficient and long-term development of geothermal system.

Currently, the investigation and monitoring of geothermal energy face significant challenges, and a lack of understanding regarding the variations in physical parameters of hot dry rock reservoirs with temperature is a crucial factor. In this study, 29 hot dry rock samples from the Gonghe Basin in Qinghai Province were subjected to high-temperature petrophysical experiments to analyze the changing patterns of physical parameters with temperature. Results show that: ①The density of rock samples gradually decreases with temperature, albeit with an attenuation range of less than 1%. ②The temperature change exerts a substantial influence on the P-wave velocity and S-wave velocity of the samples, resulting in significant attenuation between 120 ℃ and 180 ℃, with respective reductions of approximately 1 500 m/s and 800 m/s. ③A peak magnetic field intensity, seven times greater than at room temperature, is reached at 120 ℃. ④The resistivity fluctuates with increasing temperature, whose values ranges from 10 to 25 Ω·m. Based on these experimental results and with the combination of the classical Gassmann equation and fluid substitution models, this study made a quantitative analysis on the impacts of porosity and temperature variations on longitudinal wave velocity. The outcomes indicate that a porosity of 0.025 resulted in a decrease of approximately 600 m/s in the longitudinal wave velocity with increasing temperature, whereas a porosity of 0.1 caused a decrease of approximately 1 000 m/s under the same conditions.

This article summarized the nursing care of a patient with head and neck squamous cell carcinoma (HNSCC) complicated with immune-related myositis. Nursing points included: nursing care on bilateral ptosis and dysphagia, the patient’s safety management and psychological nursing, health education on corticosteroids therapy, etc. Trough symptomatic treatment with integrated traditional Chinese and western medicine and individual nursing care, the patient’s condition was relieved, and the patient was discharged smoothly. (本总结1例头颈部鳞癌患者并发免疫相关性肌炎的护理经验。护理要点包括: 双眼睑下垂和吞咽困难的护理、安全管理和心理护理、眼周穴位按摩联合皮内针疗法、健康宣教等。通过中西医结合对症治疗以及个性化护理, 患者病情缓解并顺利出院。)

With the rapid development of the new energy industry, distributed generation (DG) is connected to the power grid on a large scale, and the traditional relay protection scheme is no longer suitable for modern power systems. In order to solve this problem, this paper establishes a mathematical model of the equivalent circuit of distributed photovoltaic power supply according to the external characteristics of photovoltaic cells, and analyzes its volt-ampmeter characteristics and voltage output characteristics of power supply. On this basis, it analyzes and puts forward the control mode of DG when the distribution network is faulty. On the basis of the study, this article has double feeder distribution network as an example, the analysis when the line fault occurring at different extents of DG connected to different position on the influence of the distribution network current protection, the results show that when answering DG side in the feeder bus for distribution network of current protection, pick a smaller effect on both ends of feeder, has a certain symmetry. Finally, the accuracy of theoretical analysis is verified by establishing a simulation model in PSCAD.

The geological hidden disaster-causing bodies such as small-scale faults and collapsed columns may destroy the continuity of the coal seam, which will lead to accidents such as gas outburst and water outburst in the air mining area, and seriously threaten the coal mining safety.Traditional seismic exploration methods are mainly involved with reflected waves that have a limited resolution and cannot effectively identify them.A multi-parameter sparse optimization diffraction separation method in the shot domain is proposed that is based on curvelet sparse transformation and plane-wave decomposition.It can solve the problem of diffraction separation in the interfering or tangency cases and the separated diffractions have a waveform consistency and integrity.The 3D numerical modeling and simulation test results show that the proposed method can effectively eliminate the shielding effect of strong reflections, separate the complete diffracted/scattered wave, and improve the imaging accuracy of fault edges and scattering points, where the imaging features of polarity reversal can be used to distinguish different types of small-scale geological structures.The field data of Shanxi Yang Erkuang coal mine confirmed that the proposed method can effectively remove the shielding effect of strong reflections from coal seam, and the hyperbolic forms of diffractions in the stacked profile can qualitatively control its reliability.For seismic diffraction interpretation, full-wave field imaging results are generally required to provide a macroscopic geological background and the diffraction imaging results are combined to reveal hidden disaster-induced geological bodies.The diffraction image of collapsed column boundaries and their insider characterization is clearer, and the exhibition of small-scale fractures is more powerful.It is a high-resolution imaging method and has a great potential in detecting hidden disaster geological bodies, which can provide a technical guarantee for coal mine safety and efficient mining in China.

This article explores the construction plan and innovative operation mode of Peripherally Inserted Central Catheter (PICC) nursing clinics in a certain Traditional Chinese Medicine(TCM) hospital, and to evaluate its practical effects. The PICC nursing clinic had a reasonable layout, and the work was carried out through the formation of intravenous treatment teams, establishment of rules and regulations, nursing expert preparation system, multi-disciplinary team cooperation system, special quality control of outpatient clinics, application of characteristic Chinese Medicine technology, and networked nursing guidance, etc. (本文探讨了中医医院PICC护理门诊的建设方案和创新运行模式, 并评价其实践效果。PICC护理门诊设置布局合理, 通过组建静脉治疗团队, 通过建章立制、护理专家备班制、多学科团队合作制、门诊专项质量控制、应用中医特色技术及网络化护理指导等形式开展工作。)

Er3+ doped high density germanate glasses with compositions of 50GeO 2 -10BaO–10Al 2 O 3 -15Lu 2 O 3 -(15-x) La 2 O 3 -xEr 2 O 3 (x = 0, 0.1, 0.5, 1.0, 1.5, and 2.0, in mol%) have been prepared by the melt-quenching method. The optical and physical properties of the samples were characterized by differential scanning calorimetry (DSC), density, transmittance spectra, photoluminescence (PL) spectra, and X-ray excited luminescence (XEL) spectra. The densities were in the range from 5.90 to 6.07 g/cm3. The strong green emissions around 552 nm of Er3+ were observed upon the excitations of 378 nm light and the X-ray, and the lifetimes of 552 nm emission were in the range of 20.88–96.47 μs. The results show that Er3+ doped high density germanate glasses could be used as potential scintillators for X-ray CT. [ABSTRACT FROM AUTHOR]