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Turfgrass is a crop used extensively in athletic fields and golf courses in Maryland. A soil sample collected in July 2023 from an athletic field in Baltimore County, Maryland, part of a turfgrass nematode survey, contained Belonolaimus longicaudatus. In the southeastern United States, B. longicaudatus is an economically important pathogen of warm season turfgrass. The density was four individuals/100 cm3 of soil, and no visual symptoms were observed in the bermudagrass field. Morphological features and morphometrics of males and females were consistent with B. longicaudatus and placed the Maryland population in a subclade that was geographically represented by populations from north and west Florida, Texas, and South Carolina. Sequencing of the internal transcribed spacer region ITS1 and ITS2 and 28S large ribosomal subunit D2-23 expansion region confirmed the species' identity. Phylogenetic trees and parsimony network analysis placed the Maryland isolate in a large grouping of B. longicaudatus populations including those from Alabama, Delaware, Florida, Indiana, Mississippi, South Carolina, and Texas. To our knowledge, this is the first report of B. longicaudatus in Maryland.

Objective·To investigate the predictive value of systemic inflammatory index (SII) and somatization symptom score-China (SSS-CN) for major adverse cardiovascular events (MACEs) in patients with first-episode acute myocardial infarction (AMI) undergoing percutaneous coronary intervention (PCI).Methods·Three hundred and five first-episode AMI patients who received PCI treatment at the Cardiology Department of Anhui Second People's Hospital from September 2021 to September 2023 were included in the study. Enrolled patients were divided into MACEs group (n=203) and non-MACEs group (n=102) based on whether MACEs events occurred during hospitalization. Descriptive statistical analysis was performed on the general data such as gender, age and laboratory test results of the two groups of patients, and binary Logistic regression test was conducted for statistically significant items according to the analysis results. According to the results, receiver operating characteristic (ROC) curves were further drawn to evaluate the value of SII and SSS-CN in predicting the occurrence of MACEs in hospital. On this basis, coronary syntax score (SS) was combined to evaluate the predictive efficacy of the three combinations, and the optimal cut-off value was determined according to the maximum Jordan index.Results·A total of 203 patients had MACEs events, among whom 179 (88.1%) had heart failure, 16 (7.9%) had severe arrhythmia, 4 (2.0%) had shock, 2 (1.0%) had recurrent myocardial infarction, and 2 (1.0%) died. Compared with the non-MACEs group, the SII and SSS-CN scores in the MACEs group were significantly increased (1 925.86 vs 934.23, 38.57 vs 23.30; both P

Compared with the ordinary electric drive system, there is a wide range of explosive environment formed by flammable mixtures in modern industrial production such as coal mines and petrochemicals. The existence of potential ignition sources (electric spark and thermal surface) in the variable frequency drive system may cause explosion, resulting in casualties and heavy losses. Firstly, this paper introduces standards, research status of explosion protection technology of variable-frequency drive system in explosive environment, and summarizes the structure of frequency conversion drive system, flameproof frequency converter, flameproof motors, in explosive atmosphere, discusses the problems in the research of various parts of the system and special environment applications. Finally, the development of the reliability of the variable frequency drive system under extreme environments, the safety assessment technology of the variable frequency drive system used in explosive atmosphere, and the new integrated flameproof variable frequency drive technology are prospected.

The sensitive response of antiferromagnetic order to As ions height in pressure environment makes the reduction of As ions height beneficial for rapid suppression of antiferromagnetism. The analysis from lattice parameters and electron density indicates that As ions height has a significant impact on antiferromagnetic suppression. The interrelationship between As ions height and antiferromagnetic suppression makes it easier for uniaxial pressure along the c‐axis environments to suppress antiferromagnetism, cause Lifshitz transition compared and induce Fermi surface nesting than uniaxial pressure along the a‐axis (or b‐axis) environments, which can explain the fluctuation of superconducting critical pressure measurements in experiments with uneven pressure application from a microscopic perspective. [ABSTRACT FROM AUTHOR]

Digital transformation provides new opportunities for companies, but also unexpected consequences. We quantify the firms' level of digitalization using text analysis to examine whether digital transformation affects financial investment. The results conclude that digital transformation increases financial investment and our findings remain valid after robustness checks, indicating that digital transformation unexpectedly exacerbates the financialization problem of Chinese companies. We further discuss the motive and channels of corporate financialization under digital transformation. Our results show that digital transformation increases financial investment through financial surrogate intermediaries and higher return on financial assets. Therefore, managers should not ignore the potential negative effects during the process of digital transformation. [ABSTRACT FROM AUTHOR]

The direct synthesis of dimethyl carbonate (DMC) from methanol and CO2 presents an attractive route to turn abundant CO2 into value-added chemicals. However, insufficient DMC yields arise due to the inert nature of CO2 and the limitations of reaction equilibrium. Oxygen vacancies are known to facilitate CO2 activation and improve catalytic performance. In this work, we have demonstrated that tuning oxygen vacancies in catalysts and implementing in situ water removal can enable highly efficient DMC production from CO2. CexZryO2 nanorods with abundant oxygen vacancies were synthesized via a hydrothermal method. In liquid-phase DMC synthesis, the Ce10Zr1O2 nanorods exhibited a 1.7- and 1.4-times higher DMC yield compared to CeO2 nanoparticles and undoped CeO2 nanorods, respectively. Zr doping yielded a CeZr solid solution with increased oxygen vacancies, promoting CO2 adsorption and activation. In addition, adding 2-cyanopyridine as an organic dehydrating agent achieved an outstanding 87% methanol conversion and >99% DMC selectivity by shifting the reaction equilibrium to the desired product. Moreover, mixing CeO2 nanoparticles with hydrophobic fumed SiO2 in gas-phase DMC synthesis led to a doubling of DMC yield. This significant increase was attributed to the faster diffusion of water molecules away from the catalyst surface, facilitated by the hydrophobic SiO2. This study illustrates an effective dual strategy of enhancing oxygen vacancies and implementing in situ water removal to boost DMC production from CO2. The strategy can also be applied to other reactions impacted by water accumulation. [ABSTRACT FROM AUTHOR]

For oil-immer transformer used in places with coal dust and no explosion hazard,an improved fault diagnosis model of mine-used transformer based on fuzzy Petri net was proposed. Fuzzy generation rule was used to establish fault diagnosis model according to relationship between fault symptom and the fault. Self-learning and adaptive ability of Elman network algorithm are used to optimize initial parameters of the model, and the settings of initial parameters of the fuzzy Petri net are more reasonable. Matlab simulation results show that fault diagnosis accuracy of the optimized model and unoptimized model is 87.88% and 75.76% respectively, which verifies effectiveness of the optimized model.