Analysis of Stochastic SIRC Model with Cross Immunity Based on Ornstein-Uhlenbeck Process.

In this paper, we analyze a stochastic SIRC model with Ornstein-Uhlenbeck process. Firstly, we give the existence and uniqueness of global solution of stochastic SIRC model and prove it. In addition, the existence of ergodic stationary distributions for stochastic SIRC system is proved by constructing a suitable series of Lyapunov functions.

Trace Doping of Pb(OH) Species on PdPb Alloys Boost Highly Active and Stable Ethanol Oxidation.

PdPb nanocrystals have drawn considerable attention due to their excellent catalytic properties, while their practical applications have been impeded by the severe degradation of activity, which is caused by the adsorption of intermediates (especially CO) during the operation. Herein, we first present porous PdPb alloys with the incorporation of amorphous Pb(OH) species as highly active and stable electrocatalysts. Alloying Pd with Pb species is initially proposed to optimize the Pd-Pd interatomic distance and adjust the d-band center of Pd.

[Bilateral percutaneous balloon kyphoplasty through unilateral transverse process-extrapedicular approach for osteoporotic vertebral compression fracture of lumbar].

Objective: To evaluate the feasibility and short-term effectiveness of bilateral percutaneous balloon kyphoplasty through unilateral transverse process-extrapedicular approach for osteoporotic vertebral compression fracture (OVCF) of lumbar.

Methods: A retrospective analysis was made on the clinical data of 93 patients with OVCF of lumbar who met the selection criteria between January 2018 and June 2019. According to the different surgical methods, they were divided into group A (44 cases, treated with bilateral percutaneous balloon kyphoplasty through unilateral transverse process-extrapedicular approach) and group B [49 cases, treated with percutaneous kyphoplasty (PKP) via bilateral transpedicle approach].

The Role of Interferon Regulatory Factor 5 in Macrophage Inflammation During Osteoarthritis.

Mounting evidence suggests that aberrant immune responses are involved in the pathogenesis of osteoarthritis (OA). Synovial macrophages are likely involved. In this study, we sought to investigate the role of interferon regulatory factor 5 (IRF5).

Overexpression of Lymphocyte Activation Gene-3 Inhibits Regulatory T Cell Responses in Osteoarthritis.

Lymphocyte activation gene-3 (LAG-3) is a CD4 homologue expressed on the surface of activated conventional T cells and regulatory T (Treg) cells. In conventional T cells, LAG-3 acts as an inhibitory receptor of T cell inflammation. However, the role of LAG-3 in Treg cells remains controversial.

Adaptation of muscles of the lumbar spine to sudden imbalance in patients with lower back pain caused by military training.

Objective: This study aims to investigate the effects of sudden load changes (expected and unexpected imbalance) on the activity of muscles of the lumbar spine and their central motor control strategy in military personnel with or without chronic low back pain (LBP).

Design: Bilateral sudden imbalance was examined (2 × 2 factorial design).

Setting: The 117th PLA Hospital, Hangzhou, China

Participants: Twenty-one male subjects with lower back pain and 21 male healthy control subjects were active members of the Nanjing Military Region land forces.

Prevalence of low back pain among soldiers at an army base.

Background: Low back pain (LBP) is a major medical and social problem among working populations and is associated with high medical expense, loss of productivity, and disability. The aim of this study is to investigate the prevalence of LBP among soldiers and evaluate the possible causative factors in military training. The results may provide an insight into changes needed in military training that will reduce the occurrence of LBP among soldiers.

Influence of distal tibiofibular synostosis on ankle function.

Objective: To study the influence of distal tibiofibular synostosis on ankle function.

Methods: From October 1998 to October 2004, a total of 281 consecutive patients underwent operations because of ankle fractures or distal fractures of the tibia and fibula. Distal tibiofibular synostosis occurred after operation in 8 patients.