Comparative analysis of the gut microbiota of wild adult rats from nine district areas in Hainan, China.

Background: Wild rats have the potential to hold zoonotic infectious agents that can spread to humans and cause disease.

Aim: To better understand the composition of gut bacterial communities in rats is essential for preventing and treating such diseases. As a tropical island located in the south of China, Hainan province has abundant rat species.

Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure.

Quantum geometry in condensed-matter physics has two components: the real part quantum metric and the imaginary part Berry curvature. Whereas the effects of Berry curvature have been observed through phenomena such as the quantum Hall effect in two-dimensional electron gases and the anomalous Hall effect (AHE) in ferromagnets, the quantum metric has rarely been explored. Here, we report a nonlinear Hall effect induced by the quantum metric dipole by interfacing even-layered MnBiTe with black phosphorus.

[Effects of whole body vibration on bone strength and physical fitness in elderly COPD patients complicated with osteoporosis].

To investigate the effects of adding whole body vibration (WBV) to routine exercise regimen of pulmonary rehabilitation (PR) on bone strength, lung function and exercise ability of elderly patients with stable chronic obstructive pulmonary disease (COPD) complicated with osteoporosis (OP). Thirty seven elderly patients with stable COPD were randomly divided into control group (group C, =12, age: 64.6±3.

Measurement of Interhemispheric Correlation Coefficient in Rodent Model of Middle Cerebral Artery Occlusion Using Near Infrared Spectroscopy.

Near-infrared spectroscopy (NIRS) is a noninvasive brain imaging technique that measures hemodynamics by determining the optical properties of tissue. Clinical potential of NIRS for monitoring cerebral hemodynamics in cerebrovascular diseases, such as stroke, has been studied. However, inconsistencies in measurements among studies, which are believed to be partly due to anatomical variance and diversity in disease presentation, limit the clinical feasibility of NIRS for stroke monitoring.

Faraday rotation echo spectroscopy and detection of quantum fluctuations.

Central spin decoherence is useful for detecting many-body physics in environments and moreover, the spin echo control can remove the effects of static thermal fluctuations so that the quantum fluctuations are revealed. The central spin decoherence approach, however, is feasible only in some special configurations and often requires uniform coupling between the central spin and individual spins in the baths, which are very challenging in experiments. Here, by making analogue between central spin decoherence and depolarization of photons, we propose a scheme of Faraday rotation echo spectroscopy (FRES) for studying quantum fluctuations in interacting spin systems.

Monte Carlo evaluations of the absorbed dose and quality dependence of AL2O3 in radiotherapy photon beams.

Purpose: The purpose of this work was to evaluate the absorbed dose to AL2O3 dosimeter at various depths of water phantom in radiotherapy photon beams by Monte Carlo simulation and evaluate the beam quality dependence.

Methods: The simulations were done using EGSnrc. The cylindrical Al2O3 dosimeter (Phi4 mm x 1 mm) was placed at the central axis of the water phantom (Phi16 cm x 16 cm) at depths between 0.

[Studies on fingerprints of Bupleurum chinense and vinegar-baked Bupleurum chinense from Hubei province].

Objective: To establish the HPLC Fingerprint of Bupleurum chinense from GAP provenance of Hubei province Baokang, and discuss the changes before and after processing.

Methods: Using HPLC detection method equipped with Hypersil ODS column (5 microm, 4.6 mm x 250 mm), using acetonitrile-water as mobile phase gradient elution, flow as 1.

[Study on the volatile oil by SFE-CO, from crude and processed Rhizoma Atractylodis by GC-MS].

Objective: To analyze the chemical constituents of the volatile oil by SFE-CO2 from Rhizoma Atractylodis and its roasted products.

Methods: The chemical constituents of the volatile oil extracted by SFE-CO2 were separated and identified by GC-MS.

Results: 33 kinds of constituents were identified from Atractylodes lancea (Thunb.