Spatial and temporal evolution and factors influencing soil aggregate stability in the riparian zone during exposure: A case study of the water-level fluctuation zone of the Three Gorges Reservoir, China.

The water-level fluctuation zone (WLFZ) is a unique riparian region that forms in response to the operation of the reservoir. The periodic submersion-exposure conditions severely affect the properties of soil and vegetation, thus also change the spatial and temporal development of soil aggregate stability. Nonetheless, the changes in both space and time concerning soil aggregate stability and the factors influencing it during the exposure period in the WLFZ are still unclear.

Methods on improvements of the poor oral bioavailability of ginsenosides: Pre-processing, structural modification, drug combination, and micro- or nano- delivery system.

Panax ginseng Meyer is a traditional Chinese medicine that is widely used as tonic in Asia. The main pharmacologically active components of ginseng are the dammarane-type ginsenosides, which have been shown to have anti-cancer, anti-inflammatory, immunoregulatory, neuroprotective, and metabolic regulatory activities. Moreover, some of ginsenosides (eg, Rh2 and Rg3) have been developed into nutraceuticals.

Ginsenoside Rh2 and its octyl ester derivative inhibited invasion and metastasis of hepatocellular carcinoma via the c-Jun/COX2/PGE2 pathway.

Background: Liver cancer is a topical global health issue. The treatment of liver cancer meets significant challenges in the high recurrence rate and invasive incidence. Therefore, the treatment strategies that target epithelial-mesenchymal transition (EMT) induced by cyclooxygenase 2 (COX2)/ prostaglandin E2 (PGE2) pathway have become epidemic.

Bioinformatics analysis to identify breast cancer-related potential targets and candidate small molecule drugs.

Objective: The purpose of this study is to identify potential targets associated with breast cancer and screen potential small molecule drugs using bioinformatics analysis.

Methods: DEGs analysis of breast cancer tissues and normal breast tissues was performed using R language limma analysis on the GSE42568 and GSE205185 datasets. Functional enrichment analysis was conducted on the intersecting DEGs.

Warming delays but grazing advances leaf senescence of five plant species in an alpine meadow.

Leaf senescence is the final stage in the life cycle of leaves and is critical to plants' fitness as well as to ecosystem carbon and nutrient cycling. To date, most understanding about the responses of leaf senescence to environmental changes has derived from research in forests, but the topic has been relatively neglected, especially under grazing conditions, in natural grasslands. We conducted a 3-year manipulative asymmetric warming with moderate grazing experiment to explore the responses of leaf senescence of five main species in an alpine meadow on the Qinghai-Tibetan Plateau.

Ambient climate determines the directional trend of community stability under warming and grazing.

Changes in ecological processes over time in ambient treatments are often larger than the responses to manipulative treatments in climate change experiments. However, the impacts of human-driven environmental changes on the stability of natural grasslands have been typically assessed by comparing differences between manipulative plots and reference plots. Little is known about whether or how ambient climate regulates the effects of manipulative treatments and their underlying mechanisms.

Dynamic Mechanical Behavior of Hierarchical Resin Honeycomb by 3D Printing.

In this paper, surface projection micron stereo-lithography technology (PμSL) by 3D printing was used to prepare two resin honeycomb materials with different levels, and the mechanical behavior of these materials was studied. The quasi-static compression experiment and the dynamic compression experiment were carried out on the samples using the in situ micro-compression testing machine and the Split Hopkinson bar (SHPB) experimental equipment. The stress-strain curves of these materials at different strain rates were obtained, and the energy absorption characteristic of materials with two different levels were analyzed.

[Clinical evaluation of Er:YAG laser in the treatment of grade Ⅱ periodontitis with bifurcation lesions].

Purpose: To evaluate the clinical efficacy of erbium-doped yttrium aluminium garnet (Er: YAG) laser in the treatment of degree II bifurcation periodontitis.

Methods: Thirty patients(60 teeth) with grade II bifurcation lesions of chronic periodontitis were enrolled in this study. One week after supergingival scaling with ultrasound, the patients were randomly divided into experimental group: subgingival scaling with ultrasound and hand instruments + Er: YAG laser irradiation in periodontal pocket; control group: the contralateral homonymous teeth were treated with subgingival scaling with ultrasound and hand instruments alone.

Enhanced spring temperature sensitivity of carbon emission links to earlier phenology.

Phenology has a great effect on the carbon cycle. Significant relationships have been well demonstrated between phenology and photosynthesis. However, few studies have been undertaken to characterize relationships between phenology and ecosystem respiration (Re).

Annual ecosystem respiration is resistant to changes in freeze-thaw periods in semi-arid permafrost.

Warming in cold regions alters freezing and thawing (F-T) of soil in winter, exposing soil organic carbon to decomposition. Carbon-rich permafrost is expected to release more CO to the atmosphere through ecosystem respiration (Re) under future climate scenarios. However, the mechanisms of the responses of freeze-thaw periods to climate change and their coupling with Re in situ are poorly understood.

Microbial community responses reduce soil carbon loss in Tibetan alpine grasslands under short-term warming.

Changes in labile carbon (LC) pools and microbial communities are the primary factors controlling soil heterotrophic respiration (R ) in warming experiments. Warming is expected to initially increase R but studies show this increase may not be continuous or sustained. Specifically, LC and soil microbiome have been shown to contribute to the effect of extended warming on R .

Opposite effects of winter day and night temperature changes on early phenophases.

Changes in day (maximum temperature, T ) and night temperature (minimum temperature, T ) in the preseason (e.g., winter and spring) may have opposite effects on early phenophases (e.

Modelling soil detachment by overland flow for the soil in the Tibet Plateau of China.

The overland flow erosion is common and became more serious because of the climate warming inducing more runoff in the Tibet Plateau. The purposes of this study were to evaluate the effects of flow rate, slope gradient, shear stress, stream power, unit stream power and unit energy of water-carrying section on the soil detachment capacity for the soil in the Tibet Plateau of China due to the information is limited. To achieve this aim, laboratory experiments were performed under six flow rates (5, 10, 15, 20, 25 and 30 L min) and six slope gradients (8.

[Clinical comparative study on the efficacy of periodontal endodontic therapy and periodontal treatment alone for advanced periodontitis].

Objective: This study aimed to explore the period of endodontic treatment and the effects of periodontal-endodontic treatment for advanced periodontitis.

Methods: A total of 180 patients with advanced periodontitis participated in this clinical multicenter study. The respondents were randomly divided into an endodontic combined treatment (experimental) group and a periodontal treatment alone (control) group; each group consisted of 90 teeth.

[Not Available].

Authors report a retrospective study of all cases of indoramin-only poisoning notified to the Paris poison Centre from 1986 to 2010. Fifty five cases of indoramin self-poisoning were included: 40 adults and 15 children. The mean supposed ingested dose was about 701mg±464mg.