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Fault diagnosis of the fluid end faces two challenges. One is that the vibration signal used for diagnosis contains a lot of noise, and the other is that the vibration signal cannot fully reflect the fault state. In this paper, a model based on enhanced vibration-strain signals is proposed to improve the fault diagnosis accuracy of the drilling pump fluid end. First, the sparrow search algorithm (SSA) is employed to optimize maximum correlated kurtosis deconvolution (MCKD) to enhance the impact component of the vibration signal. Second, the enhanced vibration-strain signals are proposed to accurately describe the working state of the fluid end. Third, a one-dimensional convolutional neural network (CNN) with dual-signal feature fusion is established to diagnose faults of the fluid end. The results demonstrate that when utilizing the SSA-MCKD enhanced vibration-strain signal as input, the CNN model achieved an outstanding average diagnosis accuracy of 99.26% across various operating conditions. [ABSTRACT FROM AUTHOR]

Anticoagulants are commonly prescribed for multiple conditions. However, their influence on traumatic brain injury (TBI) outcomes, especially mortality, is not clear. The present study aimed to explore the effect of prior anticoagulation treatment on the outcomes of TBI. PubMed, Embase, Cochrane Central Register of Controlled Trials, Scopus and CINAHL databases were systematically searched for studies on individuals diagnosed with TBI, with a subgroup on prior anticoagulation therapy. Outcomes of interest included overall mortality, in-hospital mortality, length of hospital and intensive care unit stay, need for neurosurgical intervention and discharge rate. Cohort and case-control studies, published up to September 2023, were examined. Analysis was performed using STATA version 14.2 software and the Newcastle Ottawa Scale was used for bias assessment. A total of 22 studies (102,036 participants) were included in the analysis. Patients with TBI with prior anticoagulation treatment showed a statistically higher overall mortality risk [odds ratio (OR): 1.967, 95% confidence interval (CI): 1.481-2.613]. Subgroup analyses revealed age-specific and TBI severity-specific variations. Prior anticoagulation treatment was associated with a 1.860-times higher rate of in-hospital mortality and a significantly increased likelihood of requiring neurosurgical intervention (OR: 1.351, 95%CI: 1.068-1.708). However, no significant difference was noted in lengths of hospital or ICU stays. Patients with TBI and prior anticoagulation therapy are at higher risk of overall and in-hospital mortality and have significantly higher likelihood of needing neurosurgical interventions. The results emphasized the need for tailored therapeutic approach and more comprehensive clinical guidelines. Future investigations on specific anticoagulant types and immediate post-TBI interventions could offer further insights. [ABSTRACT FROM AUTHOR]

Graphene oxide (GO)/multi‐walled carbon nanotubes (MWCNTs) modified nanofiltration (NF) membranes were successfully fabricated by interfacial polymerization of piperazine (PIP) and 1,3,5‐benzenetricarbonyl trichloride (TMC). Compared with the pristine polyamide (PA) membrane and GO membrane, the typical structure of the granular protrusions on the surface of the GO/MWCNTs membrane gradually disappeared, and a regular ordered morphology appeared. The membrane thickness and surface roughness were increased according to the results of field emission scanning electron microscopy (FE‐SEM) and atomic force microscopy (AFM). The contact angle of GO/MWCNTs NF membranes progressively decreased from 57° to 23°, indicating the enhancement of surface hydrophilicity. The best NF performance was achieved when the ratio of GO to MWCNTs was 6:3 (G‐M‐3). The water flux was 55.6 L/m2.h, which was 33.7% higher than that of the GO membrane, and the rejection rate for Na2SO4 was maintained at approximately 94%. Both modified NF membranes could treat actual dyeing‐printing wastewater effectively. The anti‐fouling performance of G‐M‐3 was better than that of G3. Therefore, GO/MWCNTs‐modified NF membranes have a good application prospects in the field of wastewater treatment and water purification. [ABSTRACT FROM AUTHOR]

Knowledge sharing among supply chain partners is a critical process to achieve a competitive advantage in business. Despite the increase in relevant studies, the function and importance of trust and risk-sharing contracting which represents the corporate governance mechanisms of knowledge sharing remain indistinct. This research conducts an empirical survey with 120 replies from firms located in south-eastern China which shows that both trust and risk-sharing contracting increase the likelihood of knowledge sharing among supply chain partners and enhance the overall supply chain performance. Moreover, the results indicate that knowledge sharing fully mediates the relationship between risk-sharing contracting and supply chain performance but only partially mediates the relationship between trust and supply chain performance. This study contributes to knowledge management and supply chain management by clarifying the importance of corporate governance mechanisms. It also helps practitioners to facilitate knowledge sharing in supply chains by pointing out the best practices. [ABSTRACT FROM AUTHOR]