Cascaded reservoirs promote phosphorus bioavailability of surface sediments in the Upper Mekong River.

As a key nutrient for primary productivity in freshwater ecosystems, the effect of upper cascade reservoirs on the downstream phosphorus (P) loading is subject to an ongoing scientific debate in the Mekong River. To investigate the effects of cascade reservoirs on the forms of P and its bioavailability in surface sediment, two rounds of field research were carried out both in a free-flowing river (Nu River) and in the Upper Mekong River (Lancang River) during winter and summer. Results showed that while the P was trapped with sediments and environmental parameters changed significantly, high relative abundance of bioavailable phosphorus (BioP, generally include Fe-bound P, Al-bound P, and Organic P) in sediment was detected in reservoirs and at near the border between China and Myanmar.

Sediment nitrogen contents controlled by microbial community in a eutrophic tributary in Three Gorges Reservoir, China.

Nitrogen pollution caused serious environmental problems in reservoir ecosystems. Reducing nitrogen pollution by enhancing nitrogen removal in river sediments deserved intensive research. Distributions of nitrogen contents in sediment-water interface were characterized along the Xiangxi bay (XXB), a eutrophic tributary in Three Gorges Reservoir, China.

Responses of leaf functional traits to different hydrological regimes and leaf economics spectrum in the water level fluctuation zone of Three Gorges Reservoir, China.

A unique riparian ecosystem has been created as a result of anti-seasonal flooding after reservoir operations, which notably influences the distribution patterns of plant communities and their functional characteristics in the riparian zone. Plant functional traits which reflect the physiological and ecological processes of plants in particular ecosystems are crucial for indicating the variations in the ecosystem structure and function. To better understand the adaptation strategies of plants to hydrological changes and provide a scientific basis for the selection of species in the re-vegetation of the newly formed ecosystems, 14 leaf functional traits and leaf economics spectrum (LES) of 19 dominant plants under different hydrological conditions were investigated in the water level fluctuation zone (WLFZ) of the Three Gorges Reservoir (TGR).

The influence of hydraulic characteristics on algal bloom in three gorges reservoir, China: A combination of cultural experiments and field monitoring.

It is essential to understand the mechanism of algal bloom and develop effect measures to control the hazard in aquatic environment, such as large reservoirs. In this study, a series of experiments, along with field observation from 2007 to 2016, were carried out to identify the hydrodynamic parameters that drive the algal bloom in the Three Gorges Reservoir (TGR), China, and their threshold values were determined. The results show that algae concentration was markedly diluted with a short retention time, and the threshold value of the retention time to avoid algal bloom was approximately less than 3 days.

Capsular Polysaccharide From Protects Against Ulcerative Colitis in an Undegraded Form.

The prominent human symbiont protects animals from intestinal diseases, such as ulcerative colitis, and its capsular polysaccharide plays a key role in reducing inflammation. strain ZY-312 was isolated from the feces of a healthy breast-fed infant, and the zwitterionic capsular polysaccharide zwitterionic polysaccharide, TP2, was extracted. In rats with 2,4-dinitrobenzenesulfonic acid (DNBS)-induced enteritis, TP2 at an optimal dose of 2.

[Analysis of Total Organic Carbon Source Differences Between New and Old Cascade Reservoirs using Carbon and Nitrogen Isotopes].

The ecological problems due to reservoir construction are causing unprecedented concern. To reveal the differences in organic carbon distribution characteristics and sediment sources of total organic carbon (TOC) between the old and new reservoirs, water samples, and sediment samples from reservoirs constructed in the three different periods of Miaowei, Gongguoqiao, and Dachaoshan were collected in November 2017. The temperature (), dissolved oxygen (DO), TOC, redox potential (ORP), total nitrogen (TN), and total phosphorus (TP) of the water samples were measured.

[Speciation and Transformation of Phosphorus in Sediments During the Redox Cycle].

To study the mechanism of phosphorus cycling in sediment during the redox cycle, changes in physicochemical properties of overlying water and various forms of phosphorus in sediments were investigated as a way to quantify the redistribution of phosphorus. Additionally, the effect of the release flux of phosphate from sediments under controlled redox conditions was analyzed. The results showed that the redox potential Eh and the pH system, sulfur system, carbon system, and iron-related changes exhibited periodicity and played an important role in explaining the migration and transformation mechanism in the interface phosphorus of the sediment-water phase.

Clinical analyses of clustered microcalcifications after autologous fat injection for breast augmentation.

Background: Autologous fat injection for breast augmentation has been disputed with regard to its complications for many years, especially regarding calcifications, most of which present with benign features. In previous studies, clustered microcalcifications were not observed after fat injection for breast augmentation, which are usually regarded as malignant calcifications.

Methods: From July of 1999 to December of 2009, autologous fat injection for breast augmentation was performed for both breasts in 48 patients.

[Application of abdominoplasty and polypropylene to repair the abdominal defect].

Objective: To introduce a operation method of repairing the abdominal defect with abdominoplasty and polypropylene.

Methods: 27 patients were treated with abdominoplasty and polypropylene.

Results: Follow up 3 - 20 months, the focus in inferior abdominal wall were removed thoroughly.

[Analysis of Millard II technique for correcting secondary deformities of unilateral cleft lip].

Objective: To analyze the Millard II technique for correcting secondary deformities of unilateral cleft lip.

Methods: The Millard II technique was used to correct secondary deformities of unilateral cleft lip in 42 patients from March of 2003 to September of 2004. Dissection was made between the alar cartilage and skin, and the alar cartilage was suspended.

[The application of pedicled anterolateral thigh fasciocutaneous flaps for reconstruction of perineal and inguinal defects].

Objective: To evaluate a method for the reconstruction of defects of perineum and groin with pedicled anterolateral thigh fasciocutaneous flaps.

Methods: From July 2003 to February 2005, 12 pedicled anterolateral thigh fasciocutaneous flap based on the perforators of lateral circumflex femoral artery had been designed and transferred to the defects of perineum and groin.

Results: Anterolateral thigh fasciocutaneous island flaps were performed in twelve patients.

[TRAM flap in conjunction with latissimus dorsi muscle flap for breast reconstruction].

Objective: To investigate a method to reconstruct the breast and repair the chest wall defects at the same time.

Methods: The operation procedure combined the transverse rectus abdominis myocutaneous (TRAM) flap with the latissimus dorsi muscle(LDM) flap for breast reconstruction and repair of chest wall defect. Two patients underwent delayed breast reconstruction using this technique.