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1161
The q-Dixon sequence for MRI predicts osteoporotic vertebral compression fractures
Published 2025-08-01“…The receiver operating characteristic curve (ROC) and area under the curve (AUC) were used to evaluate the prediction efficiency of the FF values and to determine the best cut-off value for prediction.ResultsThe average lumbar spine FF value and the FF values of the L1–L4 vertebrae in the fracture group were significantly higher than those in the non-fracture group, and there was no significant difference in BMD between the two groups. …”
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1162
BREAST+: An augmented reality interface that speeds up perforator marking for DIEAP flap reconstruction surgery
Published 2024-12-01“…Quantitative (marking error, task completion time, and number of task repetitions) and qualitative (perceived usability, perceived workload, user preference and user satisfaction) data are collected to assess BREAST+ performance during perforator marking. The average time taken to mark each perforator is 7.7 ± 6.5 s, with an average absolute error of 6.8 ± 2.6 mm and an estimated average deviation of 3.6 ± 1.4 mm. …”
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1163
Safety Assessment of Electromagnetic Environmental Exposure for GPS Antenna of Electric Vehicle
Published 2024-01-01“…The peak human-induced electric field is 18.4 V/m, and the peak specific absorption rate is 0.193 W/kg. The 30 minute average maximum human-induced electric field is 1.6906 V/m, which is 3.1% of the ICNIRP limit, the 30 minute average whole-body SAR is 0.0036 W/kg, which is 4.5% of the ICNIRP limit, and the 30 minute average human core temperature rise is 0.06°C, which is 6% of the ICNIRP limit. …”
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1164
Study of the Possibility to Combine Deep Learning Neural Networks for Recognition of Unmanned Aerial Vehicles in Optoelectronic Surveillance Channels
Published 2024-11-01“…On all test videos, RT-DETR-R50 was more accurate by an average of 18.7% in terms of average classification accuracy (Pc). …”
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1165
ECG Signal Detection and Classification of Heart Rhythm Diseases Based on ResNet and LSTM
Published 2021-01-01“…After eliminating the possibility of abnormal signal, the ResNet34-LSTM3 model obtained an average F1 score of 0.861 and an average area under the receiver operating characteristic curve (ROC) of 0.972 on the test dataset, which indicates that the model can effectively extract the characteristics of ECG signals and diagnose arrhythmia diseases. …”
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1166
Research and application of locomotive wheel reprofiling model targeting flange thickening
Published 2022-09-01“…In the two-month trial application, flange thinning reached a proportion of 78%, with an average thinning of 0.83 cm and the average reprofiling amount per wheel down by 7.94%. …”
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1167
Exercise intolerance in patients with chronic coronary syndrome: insights from exercise stress echocardiography
Published 2024-11-01“…Moreover, the ΔSVi and flow reserve were lower, but the Δaverage mitral valve E/e’ was higher in the exercise-intolerant group. …”
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1168
Daily Runoff Prediction Model Based on Multivariate Variational Mode Decomposition and Correlation Reconstruction
Published 2025-05-01“…For the prediction of fluctuation terms, the historical runoff from the previous 7 days was used as input, resulting in seven operating conditions. Then, the Microbial Enhanced Algorithm-Back Propagation(MEA-BP) model was used for multiple predictions, and the average values were taken, and evaluation indicators were employed to assess the seven operating conditions. …”
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1169
Ways to solve the problem of converting diesel locomotives to gaseous fuel
Published 2021-09-01“…The minimum required structural changes to the standard fuel equipment are determined, which are necessary to ensure stable operation of a diesel locomotive on gaseous fuel. A comparative assessment of the efficiency of converting diesel locomotives to gaseous fuel is carried out and the cost of fuel consumed per hour of operation is determined, depending on the degree of fuel replacement with gas when the locomotive is operating in average operating modes.…”
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1170
Fiber Bragg grating flexible sensor for deformation monitoring in steel structure engineering
Published 2025-06-01“…In steel structure engineering, deformation monitoring is one of the key factors to ensure safe construction and stable operation. Traditional deformation monitoring methods usually use contact measurement, which has problems such as high operating costs, limited monitoring range, high monitoring error rate, and low accuracy. …”
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1171
Device Substantiation for Generating Artificial Rain Drops by Pneumohydraulic Liquid Spraying
Published 2021-06-01“…They changed indicators of operating water pressure – 0.20; 0.25; 0.30 and 0.35 megapascals; air – 0.25 and 0.30 megapascals, provided the water flow rate from 0.002 to 0.010 liter per second and air – from 0.0005 to 0.0090 kilogram per second. …”
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1172
Synthesis of propellant grade HHTPB by hydrogenation of HTPB using Pd-activated charcoal as catalyst
Published 2025-03-01“…A reactor capacity of 100 ml, operating at 60 bar pressure, was used to synthesize HHTPB, and the extent of hydrogenation was controlled based on the numerous experiments varying the reactor parameters like operating temperature, operating pressure, and solvent-to-polymer ratio for a given catalyst concentration. …”
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1173
Suppression Efficiency for Dust from an Iron Ore Pile Using a Conventional Sprinkler and a Water Mist Generator
Published 2022-01-01“…The effects of operating parameters including wind velocity, spray angle, and mode of water supply on dust suppression efficiencies are evaluated. …”
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1174
Intraoperative Oxygen Status in Patients with Injuries of Abdominal Cavity Organs
Published 2017-06-01“…However, low CvO2, PvO2, and SvО2 values indicated the persisting circulatory hypoxia.Conclusion: All patients with postoperative complications were admitted into the operating room with already existing impairment of oxygen delivery. …”
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1175
Analysis of the Efficiency of Hydrogen Production Technology at Mini-CHP Plants Using Local Fuelsby Thermochemical Method
Published 2023-08-01“…The aim of the present study is to evaluate the energy efficiency of a steam-powered mini-CHP plant operating on local fuels with a thermochemical hydrogen production module. …”
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1176
Determination of the possibility of increasing the between-repair standards of hopper cars (cement carriers)
Published 2017-06-01“…These analytical works include: - analysis of the structure of the fleet of cement carriers of JSC “Freight One”; - analysis of the operating time of cement carriers in the inter-repair period; - analysis of the types and consequences of failures of cement carriers; - evaluation and comparison of operating conditions of cement carriers and covered wagons operated for three years during the between-repairs period within the framework of the combined criterion; - evaluation of the trend of the change in the average parameter of the flow of failures as they are used in the inter-repair period; - analysis of data from field survey of a group of cement carriers; - an estimation of a technical condition of bolster beams of group of cement carriers on the parameters subject to influence of processes of deterioration; - an estimate of the expected technical and economic effect of changing the calendar periodicity of repair of cement carriers. …”
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1177
Predicting the Remaining Service Life of Civil Airport Runway considering Reliability and Damage Accumulation
Published 2022-01-01“…Based on the MEPDG method, the operation process of MEPDG was analyzed and the MEPDG correction method applied to the remaining life prediction of airport pavement was obtained. …”
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1178
Lifecycle SOC Estimation for Energy Storage Batteries Under Constant Power Discharge Conditions
Published 2025-06-01“…In order to improve the operating performance of energy storage systems throughout their lifecycle, this paper focuses on calculating the state of cycle aging for energy storage batteries using a dynamic time warping (DTW) algorithm. …”
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1179
THE MORBIDITY WITH TEMPORARY DISABILITY OF WORKING MILITARY RETIREES
Published 2017-09-01“…The level of morbidity with temporary disability (MWTD) in 100 operating reserve (retired) officers amounted to 94 cases. …”
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1180
Simulation Analysis of Solar-air Dual Heat Source Heat Pump System
Published 2023-01-01“…The results show that the proposed mathematical model has considerable accuracy, and the relative errors between the simulated and experimental values are all between ±15%. The average values of the power-generation efficiency and heat-collection efficiency under the PV/T-W&ASHP operation mode are 13.91% and 41.14%, respectively, and the average COP is 2.29. …”
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