Water transparency distribution under varied currents in the largest river-connected lake of China

2016 ◽  
Vol 75 (2) ◽  
pp. 406-417
Author(s):  
Hua Wang ◽  
Yijun Zhao ◽  
Zhizhang Zhang ◽  
Yong Pang ◽  
Dongfang Liang
Keyword(s):  
Poyang Lake ◽  
Oxygen Demand ◽  
Research Area ◽  
Water Transparency ◽  
Current Status ◽  
Water Current ◽  
Ecological Indicator ◽  
Chl A ◽  
Lake Poyang ◽  
Outlying Regions

Water transparency is an important ecological indicator for shallow lakes. The largest shallow lake, Poyang Lake, as well as the most typical river-connected lake in China was selected as the research area. In view of the complicated water-sediment conditions induced by its frequent water exchange with external rivers, the dominant factors driving water transparency were determined against the field investigated data from 2003 to 2013 and a specific driving function was established. A numerical model coupling suspended sediment, Chl-a and chemical oxygen demand was developed and validated, and the spatial water transparency distributions under three typical current structures in Poyang Lake, Gravity-style, Jacking-style and Backflow-style, were quantitatively estimated. The following results stood out: water transparency in the lake varied distinctly with the current status; Backflow-style current was basically characterized by the lowest water transparency, while that under Jacking-style was the highest due to the lower sediment carrying capacity. In some outlying regions in the lake, where the water current is hardly influenced by the mainstream, the water transparency was always kept at a stable level.

Decadal Sedimentation in China's Largest Freshwater Lake, Poyang Lake

2018 ◽  
Vol 19 (8) ◽  
pp. 2384-2396
Author(s):  
Xuefei Mei ◽  
Juan Du ◽  
Zhijun Dai ◽  
Jinzhou Du ◽  
Jinjuan Gao ◽  
...  
Keyword(s):  
Poyang Lake ◽  
Freshwater Lake ◽  
Lake Poyang

Digital Audio Watermarking

2005 ◽  
pp. 126-156
Author(s):  
Changsheng Xu ◽  
Qi Tian
Keyword(s):  
Performance Evaluation ◽  
Auditory System ◽  
Digital Watermarking ◽  
Research Area ◽  
Audio Watermarking ◽  
Current Status ◽  
Digital Audio ◽  
Digital Audio Watermarking ◽  
Big Picture ◽  
Comprehensive Survey

This chapter provides a comprehensive survey and summary of the technical achievements in the research area of digital audio watermarking. In order to give a big picture of the current status of this area, this chapter covers the research aspects of performance evaluation for audio watermarking, human auditory system, digital watermarking for PCM audio, digital watermarking for wav-table synthesis audio, and digital watermarking for compressed audio. Based on the current technology used in digital audio watermarking and the demand from real-world applications, future promising directions are identified.

scholarly journals SDGs-Based River Health Assessment for Small- and Medium-Sized Watersheds

2020 ◽  
Vol 12 (5) ◽  
pp. 1846
Author(s):  
Chenyang Xue ◽  
Chaofeng Shao ◽  
Sihan Chen
Keyword(s):  
Sustainable Development ◽  
Index System ◽  
Health Assessment ◽  
Oxygen Demand ◽  
Research Area ◽  
Entropy Weight ◽  
Frequency Method ◽  
River Health ◽  
Element Analysis ◽  
Weighting Method

A river health assessment index system was established, focusing on the realistic needs of county sustainable development and the refined management of small- and medium-sized watersheds. The index system takes into consideration the United Nations’ Sustainable Development Goals (SDGs) and the vulnerability characteristics of small- and medium-sized watershed ecosystems and consists of 15 indicators in four areas: clean water, sanitation, the present status of biodiversity and threats to biodiversity. This paper uses the minimum discrimination information principle to construct a dynamic combination-weighting technology composed of a subjective weighting method (document frequency method) and an objective weighting method (entropy weight method). Using the fuzzy matter-element analysis theory, a comprehensive river health assessment technology system was constructed. Baoxing County was chosen as the research area and the results reveal that: (1) Key indicators are the biodiversity index of fish, water use intensity, endemic or indicative species retention, and chemical oxygen demand (COD) emissions. (2) The Euclid approach degree of Baoxing County indicates that the entire river is in a moderate state of health. In the future, towns must take targeted measures to coordinate the relationship between the ecological environment and socio-economic development, and enhancement and releasing must be prioritised.

scholarly journals Production Trends, Collaboration, and Main Topics of the Integrative and Complementary Oncology Research Area: A Bibliometric Analysis

2019 ◽  
Vol 18 ◽  
pp. 153473541984640 ◽  
Author(s):  
Jose A. Moral-Munoz ◽  
Lidia Carballo-Costa ◽  
Enrique Herrera-Viedma ◽  
Manuel J. Cobo
Keyword(s):  
Bibliometric Analysis ◽  
The United States ◽  
Research Area ◽  
Current Status ◽  
Future Research ◽  
Nf Kappa B ◽  
Republic Of China ◽  
The Past ◽  
Oncology Research ◽  
Complementary Oncology

Background: The prevalence of cancer has increased over time worldwide. Nevertheless, the number of deaths has been reduced during the past 2 decades. Thus, one-third of the cancer patients are users of complementary and alternative therapies, looking for other types of interventions. The main aim of the present study is to understand the current status of the research in integrative and complementary oncology. Three different aspects were analyzed: production trends, country collaboration, and leading research topics. Methods: The dataset was obtained from the documents indexed under the Integrative and Complementary Medicine category of the Web of Science database from 1976 to 2017. VOSviewer and SciMAT software were employed to perform the bibliometric analysis. Results: The Journal of Ethnopharmacology, China Medical University and the People’s Republic of China are the leading producers in the field. Regarding the collaboration, the United States and China present a close connection. The scientific community is focused on the following topics: apoptosis, breast cancer, oxidative stress, chemotherapy, and nuclear factor-Kappa-B (NF-Kappa-B). Conclusions: The present article shows potentially important information that allows understanding of the past, present, and future of research in integrative and complementary oncology. It is a useful evidence-based framework on which to base future research actions and academic directions.

scholarly journals Clinical Translational Potential in Skin Wound Regeneration for Adipose-Derived, Blood-Derived, and Cellulose Materials: Cells, Exosomes, and Hydrogels

Biomolecules ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1373
Author(s):  
Trivia Frazier ◽  
Andrea Alarcon ◽  
Xiying Wu ◽  
Omair A. Mohiuddin ◽  
Jessica M. Motherwell ◽  
...  
Keyword(s):  
Skin Flap ◽  
Healthcare Delivery ◽  
Standard Of Care ◽  
Research Area ◽  
Skin Wound ◽  
Current Status ◽  
Current Standard ◽  
Medical Need ◽  
Pressure Injury ◽  
Chronic Skin

Acute and chronic skin wounds due to burns, pressure injuries, and trauma represent a substantial challenge to healthcare delivery with particular impacts on geriatric, paraplegic, and quadriplegic demographics worldwide. Nevertheless, the current standard of care relies extensively on preventive measures to mitigate pressure injury, surgical debridement, skin flap procedures, and negative pressure wound vacuum measures. This article highlights the potential of adipose-, blood-, and cellulose-derived products (cells, decellularized matrices and scaffolds, and exosome and secretome factors) as a means to address this unmet medical need. The current status of this research area is evaluated and discussed in the context of promising avenues for future discovery.

Environmental conditions of the Suape estuarine-port complex area (Pernambuco, Brazil): phytoplankton biomass and hydrological parameters

2018 ◽  
Vol 99 (2) ◽  
pp. 291-301
Author(s):  
Isis Amália Cordeiro ◽  
Fernando Antônio Do Nascimento Feitosa ◽  
Manuel De Jesus Flores Montes ◽  
Amanda Yumi Otsuka ◽  
Alex Costa Silva
Keyword(s):  
Dissolved Oxygen ◽  
Environmental Conditions ◽  
Rainy Season ◽  
High Tide ◽  
Dry Season ◽  
Water Transparency ◽  
Industrial Complex ◽  
Productive Capacity ◽  
Chl A ◽  
Anthropogenic Action

The Suape coastal zone has suffered since the 1980s the effects of anthropogenic action due to the construction of the industrial complex of Suape. This work aimed to evaluate the environmental conditions and possible eutrophication processes of the area. Six campaigns were carried out, three in the dry season (November 2015, January and April 2016) and three in the rainy season (July 2015, July and August 2016). Water samples were collected at the surface during low tide and high tide, in neap tides. Salinity ranged from 19.75 to 37.20, the dissolved oxygen rate ranged from 61.75 to 125.90% and chlorophyll-a from 0.02 to 3.48 mg m−3. Water transparency, temperature, nitrate and silicate presented significant seasonal variation, the concentrations of nutrients being higher in the rainy season and the others in the dry season. Water transparency, salinity, dissolved oxygen saturation and chl-a <20 µm showed significant differences for tide, being higher at high tide, and at low tide for chl-a of <20 µm. The low content of dissolved inorganic nutrient salts and chl-a were indicative of an area still free of eutrophication. Anthropogenic changes in the environment have led to greater marine interference and consequently to a reduction of the productive capacity of the system.

scholarly journals Trophic Features, Benthic Recovery, and Dominance of the Invasive Mytilopsis Sallei in the Yundang Lagoon (Xiamen, China) Following Long-Term Restoration

Water ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1692 ◽  
Author(s):  
Paolo Magni ◽  
Serena Como ◽  
Maria Flavia Gravina ◽  
Donghui Guo ◽  
Chao Li ◽  
...  
Keyword(s):  
Land Reclamation ◽  
Environmental Gradients ◽  
Oxygen Demand ◽  
Current Status ◽  
Pest Species ◽  
Future Evolution ◽  
Mytilopsis Sallei ◽  
Biological Tool

A comprehensive set of physicochemical variables in near-bottom water and surface sediments, as well as the soft-bottom macrozoobenthic assemblages were investigated at six sites across the Yundang Lagoon (Southeast China) in November 2012. This lagoon was severely damaged in the 1970s due to domestic and industrial pollution and land reclamation and underwent a massive restoration effort over the past 30 years. Our objectives were to: (1) assess the current trophic and environmental condition of the lagoon; (2) investigate the pattern of spatial variation in the macrozoobenthic assemblages; and (3) assess the benthic recovery in relation to the main environmental gradients and the presence of invasive alien species. Nutrient, chlorophyll-a, biological oxygen demand (BOD5), chemical oxygen demand (CODMn), and total organic carbon (TOC) concentrations were lower than those reported in previous decades, yet organically-enriched conditions occurred at an inner site. From azoic conditions in the 1980s and a few benthic species reported prior to this study, we found a significant increase in benthic diversity with 43 species heterogeneously distributed across the lagoon. The invasive bivalve Mytilopsis sallei was the dominant species, which was associated with the richest benthic assemblage. However, M. sallei is a pest species, and its spatiotemporal distribution should be carefully monitored. These results highlight the central role of the macrozoobenthos in providing important ecological information on the current status of the Yundang Lagoon and as an effective biological tool to follow the recovery’s progress and the future evolution of this highly valued ecosystem.

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