Fast moving table tennis ball tracking algorithm based on graph neural network.

The key object tracking in sports video scenarios poses a pivotal challenge in the analysis of sports techniques and tactics. In table tennis, due to the small size and rapid motion of the ball, identifying and tracking the table tennis ball through video is a particularly arduous task, where the majority of existing detection and tracking algorithms struggle to meet the practical application requirements in real-world scenarios. To address this issue, this paper proposes a combined technical approach integrating detection and discrimination, tailored to the unique motion characteristics of table tennis.

Signature of Correlated Insulator in Electric Field Controlled Superlattice.

On a two-dimensional crystal, a "superlattice" with nanometer-scale periodicity can be imposed to tune the Bloch electron spectrum, enabling novel physical properties inaccessible in the original crystal. While creating 2D superlattices by means of nanopatterned electric gates has been studied for band structure engineering in recent years, evidence of electron correlations─which drive many problems at the forefront of physics research─remains to be uncovered. In this work, we demonstrate signatures of a correlated insulator phase in Bernal-stacked bilayer graphene modulated by a gate-defined superlattice potential, manifested as resistance peaks centered at integer multiples of single electron per superlattice unit cell carrier densities.

Continuous measurement of the dynamics of residential indoor and outdoor NO and the contributions to human exposure.

In residential environment, NO is an important air pollutant. Yet, the dynamics of indoor NO and source contributions to human exposure are not well understood. Here, we conducted a continuous NO measurement in and out of eight households in Guangzhou, China.

Rapamycin and Hyperoside-Co-loaded Macrophage Delivery System Enhanced Pulmonary Fibrosis Therapy by Autophagy Upregulation and Epithelial-to-Mesenchymal Transition Inhibition.

Pulmonary fibrosis is a lethal interstitial lung disease, for which current treatments are inadequate in halting its progression. A significant factor contributing to the development of fibrosis is insufficient autophagy, which leads to increased fibroblast proliferation and collagen deposition. However, treatments aimed at upregulating autophagy often cause further lung pathology due to the disruption of epithelial cell balance.

Momentum-Space Observation of Optically Excited Nonthermal Electrons in Graphene with Persistent Pseudospin Polarization.

The unique optical properties of graphene, with broadband absorption and ultrafast response, make it a critical component of optoelectronic and spintronic devices. Using time-resolved momentum microscopy with high data rate and high dynamic range, we report momentum-space measurements of electrons promoted to the graphene conduction band with visible light and their subsequent relaxation. We observe a pronounced nonthermal distribution of nascent photoexcited electrons with lattice pseudospin polarization in remarkable agreement with results of simple tight-binding theory.

Electroacupuncture Inhibits Neural Ferroptosis in Rat Model of Traumatic Brain Injury Activating System Xc/GSH/GPX4 Axis.

Background: Ferroptosis is an iron-dependent regulating programmed cell death discovered recently that has been receiving much attention in traumatic brain injury (TBI). xCT, a major functional subunit of Cystine/glutamic acid reverse transporter (System Xc), promotes cystine intake and glutathione biosynthesis, thereby protecting against oxidative stress and ferroptosis.

Objective: The intention of this research was to verify the hypothesis that electroacupuncture (EA) exerted an anti-ferroptosis effect via an increase in the expression of xCT and activation of the System Xc/GSH/GPX4 axis in cortical neurons of TBI rats.

's experience in treatment of cyclomastopathy by the accompanied needling at Tianchi (PC 1).

The paper introduces professor 's clinical experience in treatment of cyclomastopathy. In pathogenesis, cyclomastopathy is relevant with dysfunction of the thoroughfare vessel and the conception vessel, the stagnation of blood and phlegm and the stagnation of liver . The principle of treatment prefers to unblocking the circulation of and blood and adjusting the balance between and .

Infrared nano-imaging of Dirac magnetoexcitons in graphene.

Magnetic fields can have profound effects on the motion of electrons in quantum materials. Two-dimensional electron systems subject to strong magnetic fields are expected to exhibit quantized Hall conductivity, chiral edge currents and distinctive collective modes referred to as magnetoplasmons and magnetoexcitons. Generating these propagating collective modes in charge-neutral samples and imaging them at their native nanometre length scales have thus far been experimentally elusive.

Milling Stability Prediction: A New Approach Based on a Composited Newton-Cotes Formula.

Based on a composited Newton-Cotes formula, this paper proposes a numerical method to predict milling stability considering regenerative chatter and focusing on rate and prediction accuracy. First, the dynamic model of milling motion is expressed as state-space equations considering regenerative chatter, with the tooth passing period divided into a set of time intervals. Second, a composited Newton-Cotes formula is introduced to calculate the transition function map for each time interval.

Integration of Microfluidic Chip and Probe with a Dual Pump System for Measurement of Single Cells Transient Response.

The integration of liquid exchange and microfluidic chips plays a critical role in the biomedical and biophysical fields as it enables the control of the extracellular environment and allows for the simultaneous stimulation and detection of single cells. In this study, we present a novel approach for measuring the transient response of single cells using a system integrated with a microfluidic chip and a probe with a dual pump. The system was composed of a probe with a dual pump system, a microfluidic chip, optical tweezers, an external manipulator, an external piezo actuator, etc.

Quality evaluation of citrus varieties based on phytochemical profiles and nutritional properties.

Introduction: China is one of the major producers and exporters of various kinds of citrus fruits. As one of China's major citrus planting bases, Sichuan has a citrus planting area that exceeds 400,000 hectares. Meanwhile, citrus cultivation has become one of the important agricultural pillar industries in the region.

Current Status and Influencing Factors of Readiness for Discharge of Elderly Patients with Chronic Obstructive Pulmonary Disease.

Objective: Readiness for hospital discharge is an important indicator of patients' transition from illness to health and can predict rehabilitation and prognosis. Identifying factors that influence readiness for discharge is crucial for developing effective nursing interventions. Therefore, this study aims to investigate the current status of discharge readiness and its influencing factors in elderly patients with chronic obstructive pulmonary disease (COPD).

Topological and Stacked Flat Bands in Bilayer Graphene with a Superlattice Potential.

We show that bilayer graphene in the presence of a 2D superlattice potential provides a highly tunable setup that can realize a variety of flat band phenomena. We focus on two regimes: (i) topological flat bands with nonzero Chern numbers, C, including bands with higher Chern numbers |C|>1 and (ii) an unprecedented phase consisting of a stack of nearly perfect flat bands with C=0. For realistic values of the potential and superlattice periodicity, this stack can span nearly 100 meV, encompassing nearly all of the low-energy spectrum.

Cu-doped NdSrCoCuO ( = 0, 0.05, 0.1, 0.15, 0.2) as the cathode for intermediate-temperature solid oxide fuel cells.

NdSrCoCuO ( = 0, 0.05, 0.1, 0.

The development of visual aesthetic sensitivity in students in China.

To examine the development of visual aesthetic sensitivity in students in China, 2,387 students from age 9 to age 22 (excluding ages 16-17) were tested by the Visual aesthetic Sensitivity Test-Revised. The development of visual aesthetic sensitivity across ages and genders, and the effect of artistic training on students' visual aesthetic sensitivity were examined. The data of primary school and junior middle school students were collected by paper tests completed collectively in class, while the data of university students were collected by distributing and collecting online.

Preparation and Electrochemical Properties of Cathode Materials Ln Y CuO for Solid Oxide Fuel Cell.

Ln Y CuO (Ln = Pr, Nd, Sm; = 0, 0.025, 0.05, 0.

Momentum-Resolved Exciton Coupling and Valley Polarization Dynamics in Monolayer WS_{2}.

Using time- and angle-resolved photoemission, we present momentum- and energy-resolved measurements of exciton coupling in monolayer WS_{2}. We observe strong intravalley coupling between the B_{1s} exciton and A_{n>1} states. Our measurements indicate that the dominant valley depolarization mechanism conserves the exciton binding energy and momentum.

Single-Probe-Based Colorimetric and Photothermal Dual-Mode Identification of Multiple Bacteria.

Effective identification of multiple pathogenic bacteria in unknown samples is important for disease prevention and control but remains a challenge yet. A single-mode array-based sensing approach is simple and sensitive, but it usually relies on the use of multiple cross-reactive receptors to construct sensor arrays, which is cumbersome and insufficiently accurate. Here, we developed a sensor array with colorimetric and photothermal dual mode of differentiating multiple pathogenic bacteria.

Reading struggle stories of role models can improve the perseverance of undergraduates with low perseverance.

Perseverance refers to the ability that individuals show in the process of overcoming failure repeatedly and achieving success. The present study aimed to investigate how many stories about struggling role models undergraduates with a low level of perseverance need to read to effectively improve their perseverance after experiencing failure. Undergraduates with high and low levels of perseverance who had experienced failure were randomly assigned to read 5 struggle stories or 5 achievement stories of role models.

A Hybrid State/Disturbance Observer-Based Feedback Control of Robot with Multiple Constraints.

Controlling the manipulator is a big challenge due to its hysteresis, deadzone, saturation, and the disturbances of actuators. This study proposes a hybrid state/disturbance observer-based multiple-constraint control mechanism to address this difficulty. It first proposes a hybrid state/disturbance observer to simultaneously estimate the unmeasurable states and external disturbances.

The preparation and electrochemical properties of NdSrFeZnO cathode materials for intermediate temperature solid oxide fuel cells.

NdSrFeZnO perovskite oxides were prepared by solid state synthesis and applied as solid oxide fuel cell (SOFC) cathodes. XRD showed the high uniformity of the synthesized powder. The addition of Zn reduces the coefficient thermal expansion (CTE), and the average CTE is 15.

[Effect of electroacupuncture on behavior and cell apoptosis of brain tissue in traumatic brain injury rats].

Objective: To observe the effect of electroacupuncture (EA) on behavior, pathomorphology and brain cell apoptosis in traumatic brain injury (TBI) rats, so as to explore its mechanisms underlying treatment of TBI.

Methods: Male SD rats were randomly divided into control (=10), sham (=30), model (=30) and EA (=30) groups, the latter three groups were further divided into 3, 7, 14 d subgroups （=10）. TBI model was established by using a free fall brain injury striking device after exposing the local cranial bone (to induce the left parietal cerebral contusion).