Most lower limb rehabilitation robots are limited to specific training postures adapt stroke patients in multiple stages of recovery. In addition, there is a lack attention the switching functions side, including left, right, and bilateral, which enables with hemiplegia rehabilitate single device. This article presents an exoskeleton robot named multistage hemiplegic lower-limb robot, has been designed do sides. The mechanism consisting thigh, calf, foot introduced. Additionally, design...

The aircraft surface icing changes the flight dynamics characteristics of and seriously threatens safety. Therefore, de/anti-icing technologies are great significance for safe flight. basic principle, type, influence analyzed existing technology methods their advantages disadvantages compared. Literature review superhydrophobic materials was comprehensively conducted, its specific conditions (superhydrophobic property failure) were analyzed, especially problems challenges. A hybrid system...

The emergence of ultra-high-performance concrete (UHPC) as an attractive solution for precast and prestressed applications has coincided with global efforts towards sustainable construction. Tools capable intuitively demonstrating the tradeoffs between mix proportions mechanical performance are in increasing need this industry given embodied carbon footprint associated typical UHPC compositions. Meanwhile, ingredients their required to produce synergistically dictate material performance....

Reservoir impoundment imposes a significant triggering effect on bank landslides. Studying the early identification of landslides and their stability concerning reservoir water levels rainfall is vital for guaranteeing safety residents infrastructure in regions. This study proposed method establishing dynamic inventory active at large hydropower stations using integrated remote sensing techniques, demonstrated Lianghekou Reservoir. We employed interferometric stacking synthetic aperture...

According to the property rights model of cognitive radio, primary users who own spectrum resource have right lease part secondary (SUs) in exchange for appropriate profit. In this study, authors propose a pricing-based leasing framework between one user and multiple SUs. scenario, attempts maximise its utility by setting price spectrum, selected SUs decide their power levels help user's transmission, aiming obtain corresponding access time. Then, problem can be cast into Stackelberg game,...

Insulin resistance (IR) is a key feature of type 2 diabetes (T2D) and an independent risk factor for metabolic syndrome. Previous studies have linked elevated serum uric acid (SUA) to increased T2D.

The Tat protein of HIV-1 has several well-known properties, such as nucleocytoplasmic trafficking, transactivation transcription, interaction with tubulin, regulation mitotic progression, and induction apoptosis. Previous studies have identified a couple lysine residues in that are essential for its functions. In order to analyze the functions all Tat, we mutated them individually alanine, glutamine, arginine. Through systematic analysis mutants, discovered previously unidentified...

The lower limb rehabilitation robot is an application of robotic technology for stroke people with disabilities. A new applicable and effective sitting/lying (LLR-Ro) proposed, which has the mechanical limit protection, electrical software protection to prevent patient from secondary damage. Meanwhile, as a type robots, its hip joint rotation ranges are different in sitting training posture lying posture. leg variable workspace work both postures. So, if traditional cannot be used mechanism...

In rehabilitation, physicians plan lower-limb exercises via linear guidance. Ensuring efficacy and safety, they design patient-specific paths, carefully plotting smooth trajectories to minimize jerks. Replicating their precision in robotics is a major challenge. This study introduces rehabilitation motion planning method designed for use multi-posture robot, encompassing both path trajectory planning. By subdividing the lower limb's action space into four distinct training sections...

Abstract The reliability of the prediction model and test scheme for positioning accuracy cycloid reducer is very important. This paper proposes an efficient bidirectional drive tooth contact analysis (BDTCA) that can simultaneously analyze forward transmission error (TE), reverse TE, global lost motion (GLM) a drive, considering variety manufacturing assembly errors (including pin error). results BDTCA case studies show sensitivity radius to GLM twice without error. Therefore, influence on...

Terahertz (THz) wave generation (TWG) in a dual-color laser is investigated with joint measurements between THz and third-harmonic generation, where the relative phase delay of fields determined situ sub-wavelength accuracy, allowing for clarification TWG mechanism direct comparison various theoretical predictions. The delay- polarization-dependent experiment validates that continuum-continuum transition within escaped electron wavepacket single atom gives birth to emission, while bound...

Muscle weakness is the primary impairment causing mobility difficulty among stroke survivors. Millions of people are unable to live normally because every year. Strength training an effective method improve lower extremity ability but limited by shortage medical staff. Thus, this paper proposes a robot-assisted active (RAAT) adaptive admittance control scheme with virtual reality interaction (AACVRI). AACVRI consists stiffness variable controller, and (VR) interactions. In order provide...

To improve the operation reliability of modular multilevel converters (MMCs), a fault-tolerant control method based on model predictive (MPC) for MMC without redundant submodules (SMs) is proposed in this paper. It sequenced by two steps. First, AC current was conducted with optimal control. Second, multi-objective carried out circulating and current. The calculation amount 8 times. can have good static dynamic performance not only under normal condition but also faulty that arm asymmetric....

Swiss-rectifier is a family of high efficient AC-DC topologies. It's combination an input voltage selector and two symmetric DC-DC converters. In order to obtain isolated single-stage rectifier system, the forward converter used replace in recently study. However, hard switching operation unfavorable increase working frequency magnetic elements. By replacing with phase-shifted full-bridge, intensive stress switches released ZVS condition high-frequency can be achieved. Compared currently...

Cerebrovascular disease, hemiplegia and paraplegia may lead to lower extremity motor dysfunction. According the theory of neural rehabilitation, proper rehabilitation training can help patients recover. In this paper, a limb robot is proposed, which realize passive active training. Firstly, mechanical structure electrical system are designed. Secondly, in order solve problem inaccurate parameters dynamic model joint torque control, fuzzy adaptive PID controller established by combining...

Most lower limb rehabilitation robots use fixed training trajectories and lack participation of physiotherapists. In addition, there is a attention on combining direct teaching function with robots, which enables physiotherapists to plan directly. this paper, an adaptive variable load that can be applied the sitting/lying robot-II (LLR-II) proposed. First, structural design electrical system LLR-II are introduced. The dynamic equation considering joint flexibility derived analyzed. Then,...

The optimal dose of glucocorticoids for acute respiratory distress syndrome (ARDS) is uncertain. This study aimed to evaluate the effects different doses methylprednisolone on sepsis-induced lung injury (ALI) rats and a cohort moderate severe ARDS patients.ALI rats, challenged with lipopolysaccharide, were randomly received intraperitoneal injection normal saline (model group) (0.5, 2, 8 mg/kg, named as low-, moderate- high-dose group, respectively) 5 days. body weight changes inflammatory...

Patient transfer has always been a difficult problem, usually requiring multiple caregivers to work together, which is time consuming and can easily cause secondary injuries the patient. In addition, with crisis of COVID-19, issue patient even more critical, as are at high risk infection, causing significant damage healthcare resources. this paper, assist system named E-pat-plus (Easy Transfer plus) proposed; it in transferring patients, reduce direct contact between them, avoid injuries....