Search

Objective To investigate the status of e-Health literacy among middle-aged and elderly people in rural areas, and to analyze its influencing factors, so as to provide a theoretical basis for improving the e-Health literacy among middle-aged and elderly people. Methods From July to August 2022, a questionnaire survey was conducted on 355 middle-aged and elderly people in rural areas of Suizhou City, Hubei Province, using a general information questionnaire and an e-Health literacy scale. Results The total e-Health literacy score of middle-aged and elderly people was (25. 94±6. 01). The results of multiple linear regression analysis showed that trust in online health information (β=0. 294), whether to actively obtain health information through the Internet (β=0. 186), gender (β=-0. 140), education level (β=0. 135), marital status (β=0. 114) were the main factors influencing e-Health literacy among rural middle-aged and older adults. Conclusion The e-Health literacy level of middle-aged and elderly people in rural areas of Suizhou City, Hubei Province was low. Under the situation of rapid development of ageing and health information technology, basic health services need to pay more attention to the e-Health literacy of rural middle-aged and elderly people and to seek a health service model for rural middle-aged and elderly people that is compatible with the development of the digital age. (目的 了解农村地区中老年人电子健康素养现状, 分析其影响因素, 为提高农村地区中老年人电子健康素养提供依据。方法 2022年7月—8月, 采用一般资料问卷、电子健康素养量表对湖北省随州市355名农村中老年人进行问卷调查。结果 湖北省随州市农村地区中老年人电子健康素养总分为(25. 94±6. 01)分。多重线性回归分析结果显示: 对网络健康信息的信任程度(β=0. 294)、是否主动通过网络获取健康信息(β=0. 186)、性别(β=-0. 140)、文化程度(β=0. 135)、婚姻状况(β=0. 114)是影响农村中老年人电子健康素养的主要因素。结论 湖北省随州市农村地区中老年人电子健康素养水平较低, 在人口老龄化与健康信息化快速发展的形势下, 基层卫生服务机构应重视农村中老年人电子健康素养, 积极寻求与数字时代发展相适应的农村中老年人健康服务模式。)

Background: Patellofemoral pain syndrome (PFPS) is one of the most common causes of anterior knee pain encountered in the outpatient setting. The purpose of this study was to compare the lower limb biomechanical differences during anticipated and unanticipated side-cutting in athletes with PFPS. Methods: Fifteen male basketball players diagnosed with PFPS were enrolled in the study. Participants executed both anticipated and unanticipated 45-degree side-cutting tasks. Motion analysis systems, force plates, and electromyography (EMG) were used to assess the lower limb joint angles, joint moments, joint stiffness, and patellofemoral joint contact forces. Analyzed biomechanical data were used to compare the differences between the two circumstances. Results: Unanticipated side-cutting resulted in significantly increased ankle plantarflexion and dorsiflexion angles, knee abduction and internal rotation angles, and hip abduction angles, as well as heightened knee adduction moments. Additionally, patellofemoral joint contact forces and stress increased, while contact area decreased during unanticipated tasks. Conclusions: Unanticipated movement raises the demands for joint stability and neuromuscular control, increasing injury risks in athletes with PFPS. These findings have practical implications for developing targeted rehabilitation programs and injury prevention strategies. [ABSTRACT FROM AUTHOR]

Background: During city running or marathon races, shifts in level ground and up-and-down slopes are regularly encountered, resulting in changes in lower limb biomechanics. The longitudinal bending stiffness of the running shoe affects the running performance. Purpose: This research aimed to investigate the biomechanical changes in the lower limbs when transitioning from level ground to an uphill slope under different longitudinal bending stiffness (LBS) levels in running shoes. Methods: Fifteen male amateur runners were recruited and tested while wearing three different LBS running shoes. The participants were asked to pass the force platform with their right foot at a speed of 3.3 m/s ± 0.2. Kinematics data and GRFs were collected synchronously. Each participant completed and recorded ten successful experiments per pair of shoes. Results: The range of motion in the sagittal of the knee joint was reduced with the increase in the longitudinal bending stiffness. Positive work was increased in the sagittal plane of the ankle joint and reduced in the keen joint. The negative work of the knee joint increased in the sagittal plane. The positive work of the metatarsophalangeal joint in the sagittal plane increased. Conclusion: Transitioning from running on a level surface to running uphill, while wearing running shoes with high LBS, could lead to improved efficiency in lower limb function. However, the higher LBS of running shoes increases the energy absorption of the knee joint, potentially increasing the risk of knee injuries. Thus, amateurs should choose running shoes with optimal stiffness when running. [ABSTRACT FROM AUTHOR]

Lonicera macranthoides, the main source of traditional Chinese medicine Lonicerae Flos, is extensively cultivated in Southwest China. However, the quality of L. macranthoides produced in this region significantly varies due to its wide distribution and various cultivation breeds. Herein, 50 Lonicerae Flos samples derived from different breeds of L. macranthoides cultivated in Southwest China were collected for quality evaluation. Six organic acids and three saponin compounds were quantitatively analyzed using HPLC. Furthermore, the antioxidant activity of a portion of samples was conducted with 2,2′-Azinobis-(3-ethylbenzthiazoline-6-sulphonate) (ABTS) and 1,1-diphenyl-2-picryl-hydrazyl (DPPH) radical scavenging experiments. According to the quantitative results, all samples met the quality standards outlined in the Chinese Pharmacopoeia. The samples from Guizhou, whether derived from unopened or open wild-type breeds, exhibited high quality, while the wild-type samples showed relatively significant fluctuation in quality. The samples from Chongqing and Hunan demonstrated similar quality, whereas those from Sichuan exhibited relatively lower quality. These samples demonstrated significant abilities in clearing ABTS and DPPH radicals. The relationship between HPLC chromatograms and antioxidant activity, as elucidated by multivariate analysis, indicated that chlorogenic acid, isochlorogenic acid A, isochlorogenic acid B, and isochlorogenic acid C are active components and can serve as Q-markers for quality evaluation. [ABSTRACT FROM AUTHOR]

Two-dimensional (2D) transition metal dichalcogenides (TMDs) have attracted considerable attention in the field of room-temperature gas detection due to their high surface area and intriguing electronic properties. However, due to the insufficient activation energy for gas molecules at room temperature and the increased number of adsorption sites caused by the 2D structure, gas molecule desorption becomes challenging. As a result, TMDs-based gas sensors often exhibit a poor recovery performance. In this study, we developed an efficient nitrogen dioxide (NO2) gas sensor based on gold (Au) nanoparticle-decorated tungsten disulfide (WS2) nanosheets. The sensor was prepared by using a straightforward liquid-phase exfoliation method combined with in situ reduction, enabling effective NO2 detection at room temperature under ultraviolet (UV) activation. Specifically, the Au/WS2 composite nanomaterial, with 5 mol % Au content, demonstrated a response of 32.1 when exposed to 10 ppm NO2 under UV activation. The response is 9.44 times higher than that of the bare WS2 based sensor, highlighting the remarkable enhancement achieved by incorporating Au nanoparticles and UV irradiation. Significantly, the UV-activated Au/WS2 sensor was able to fully recover to the baseline position within 508 s, demonstrating an excellent recovery performance. Moreover, the sensor achieved a theoretical detection limit of 331 parts per billion (ppb) for NO2 and exhibited good selectivity and long-term stability. The substantial improvement in sensing performance can be attributed to the synergistic effect of the electronic and chemical sensitization facilitated by the presence of Au nanoparticles, combined with the activation influence of UV irradiation. The energy introduced by UV irradiation further promotes the catalytic performance of Au nanoparticles at room temperature, while the photoinduced electron/hole pairs enhance the gas sensing performance of NO2. This study provides a feasible pathway for preparing WS2-based composite nanomaterials and enhancing the sensing performance of TMDs-based gas sensors at room temperature. [ABSTRACT FROM AUTHOR]

C60H76N18O32Gd2, monoclinic, P21/c (no. 14), a = 10.560(5) Å, b = 31.243(5) Å, c = 12.383(4) Å, β = 116.51(3)°, V = 3656(2) Å3, Z = 2, Rgt(F) = 0.0470, wRref(F2) = 0.1013, T = 293(2) K.

C30H26DyN9O10, triclinic, P1̄ (no. 2), a = 7.706(5) Å, b = 14.965(5) Å, c = 15.859(5) Å, α = 115.358(5)°, β = 93.621(5)°, γ = 101.313(5)°, V = 1598.0 Å3, Z = 2, Rgt(F) = 0.0417, wRref(F2) = 0.1248, T = 293 K.

Background: Although numerous studies have been conducted to investigate the acute effects of shoe drops on running kinematics and kinetic variables, their effects on muscle forces remain unknown. Thus, the primary aim of this study was to compare the muscle force, kinematics, and kinetic variables of habitually rearfoot runners with heel-to-toe drops of negative 8 mm shoes (minimalist shoes) and positive 9 mm shoes (normal shoes) during the running stance phase by using musculoskeletal modeling and simulation techniques. Methods: Experimental data of lower limb kinematics, ground reaction force, and muscle activation from 16 healthy runners with rearfoot strike patterns were collected and analyzed in OpenSim. Using Matlab, the statistical parameter mapping paired t-test was used to compare the joint angle, moment, and muscle force waveform. Results: The results revealed differences in the sagittal ankle and hip angles and sagittal knee moments between the different heel-to-toe drops of running shoes. Specifically, it showed that the negative 8 mm running shoes led to significantly smaller values than the positive 9 mm running shoes in terms of the angle of ankle dorsiflexion, ankle eversion, knee flexion, hip flexion, and hip internal and hip external rotation. The peak ankle dorsiflexion moment, ankle plantarflexion moment, ankle eversion moment, knee flexion moment, knee abduction moment, and knee internal rotation also decreased obviously with the minimalist running shoes, while the lateral gastrocnemius, Achilleas tendon, and extensor hallucis longus muscles were obviously greater in the minimalist shoes compared to normal shoes. The vastus medialis, vastus lateralis and extensor digitorum longus muscles force were smaller in the minimalist shoes. Conclusions: Runners may shift to a midfoot strike pattern when wearing negative running shoes. High muscle forces in the gastrocnemius lateral, Achilleas tendon, and flexor hallucis longus muscles may also indicate an increased risk of Achilleas tendonitis and ankle flexor injuries. [ABSTRACT FROM AUTHOR]

Two-dimensional (2D) layered nanomaterials have attracted increasing attention in gas sensing due to their graphene-like properties. Although the gas sensing performances of 2D layered semiconductor transition metal dichalcogenides (TMDs), including MoS2, WS2, MoSe2 and WSe2, have been extensively studied, it has remained a grand challenge to develop a high-performance gas sensing material that can meet practical applications. Tantalum disulfide (TaS2), as a metallic TMD with low resistance and high current signal, has great promise in high-performance gas sensing. In stark contrast with Mo and W, Ta has a stronger positive charge, which contributes to a higher surface energy to capture gas molecules. Herein, through calculating the adsorption energy, charge transfer, electronic structure, and work function of the adsorption system with first-principles calculations, we first systematically studied the performance of noble metal atom substitution doping on a TaS2 monolayer for toxic nitrogen-containing gas (NH3, NO and NO2) sensing. We found that the TaS2 monolayer exhibits excellent NO sensing performance with an adsorption energy of 0.49 eV and a charge transfer of 0.17 e. However, it has a considerable adsorption energy (−0.22 and −0.39 eV) to NH3 and NO2 molecules, but a low charge transfer (−0.03 and 0.04 e) between the gas molecules and the TaS2 monolayer. To further enhance the gas-sensing performance of the TaS2 monolayer, noble metal atoms (Ag, Au, Pd and Pt) were substitutionally doped into the lattice of the TaS2 monolayer. The results showed that the values of adsorption energy and charge transfer can be significantly improved, and the electronic structure and work function of the doping system has also greatly changed, which makes it much easier to detect the changes in electrical signal due to gas adsorption. Our work indicates that the intrinsic as well as the noble metal doped TaS2 monolayers are promising candidates for high-performance gas sensors. [ABSTRACT FROM AUTHOR]

Copyright of Zeitschrift für Kristallographie / New Crystal Structures is the property of De Gruyter and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

C30H26DyN9O10, triclinic, P1̄ (no. 2), a = 7.706(5) Å, b = 14.965(5) Å, c = 15.859(5) Å, α = 115.358(5)°, β = 93.621(5)°, γ = 101.313(5)°, V = 1598.0 Å3, Z = 2, Rgt(F) = 0.0417, wRref(F2) = 0.1248, T = 293 K. [ABSTRACT FROM AUTHOR]