Dam construction impacts on multiscale characterization of sediment discharge in two typical karst watersheds of southwest China

2018 ◽  
Vol 558 ◽  
pp. 42-54 ◽  
Author(s):  
Zhenwei Li ◽  
Xianli Xu ◽  
Chaohao Xu ◽  
Meixian Liu ◽  
Kelin Wang
Keyword(s):  
Southwest China ◽  
Dam Construction ◽  
Sediment Discharge

Genomic Characterization of a New HIV-1 CRF01_AE/CRF07_BC Recombinant Virus Form in Guizhou in Southwest China

2019 ◽  
Vol 35 (7) ◽  
pp. 684-688 ◽  
Author(s):  
Wangming Zhang ◽  
Haiyan Zhang ◽  
Yi Li ◽  
Jinhe Liu ◽  
Qingyuan Long ◽  
...  
Keyword(s):  
Recombinant Virus ◽  
Southwest China ◽  
Genomic Characterization ◽  
Hiv 1

scholarly journals Evaluation of Novel Tools to Facilitate the Detection and Characterization of Leprosy Patients in China

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Yan Wen ◽  
Yuan Gang You ◽  
Lian-Chao Yuan ◽  
You Hua Yuan ◽  
Ying Zhang ◽  
...  
Keyword(s):  
Southwest China ◽  
Control Measures ◽  
Antibody Detection ◽  
Diagnostic Tools ◽  
Timely Manner ◽  
Early Disease ◽  
Clinical Exam ◽  
Leprosy Patients ◽  
Leprosy Control

Leprosy is the disabling outcome of chronic infection withMycobacterium leprae. The disease often evades early detection, particularly now that fewer clinicians are able to confidently diagnose the disease following the integration of leprosy control measures within general health services in many countries. Although leprosy is officially eliminated in China, endemic regions remain in some difficult-to-reach, underdeveloped areas in Southwest China. In order to better understand the extent ofM. lepraeinfection and identify new leprosy cases in a timely manner, simple tools that can detect infection and the early disease are required. In this report we evaluated the performance of antigen-specific ELISA, the NDO-LID rapid diagnostic test, and antigen-specific whole blood assays (WBA) as potential diagnostic tools. Our data support the use of antibody detection tests and WBA to facilitate the diagnosis of multibacillary and paucibacillary leprosy, respectively. These tools could be invaluable for increased, but simplified, monitoring of individuals in order to provide referrals for clinical exam and early leprosy diagnosis.

scholarly journals Distribution and Release Characteristics of Phosphorus in a Reservoir in Southwest China

2019 ◽  
Vol 16 (3) ◽  
pp. 303 ◽  
Author(s):  
Yuanming Wang ◽  
Kefeng Li ◽  
Ruifeng Liang ◽  
Shiqing Han ◽  
Yong Li
Keyword(s):  
Water Temperature ◽  
Release Rate ◽  
Surface Sediments ◽  
Southwest China ◽  
Particulate Phosphorus ◽  
Limiting Factor ◽  
Dam Construction ◽  
Overlying Water ◽  
Reservoir Water ◽  
Main Form

Dam construction changes the nutrient transport of a river system. Phosphorus is an important fundamental material in the global biochemical cycle and is always a limiting factor in the primary productivity of reservoirs. Extending the study of phosphorus in reservoirs is necessary given the dam construction in southwest China. Zipingpu Reservoir was chosen as the research site in this study. The form and distribution of phosphorus in the reservoir’s surface sediments and overlying water were analyzed. The results showed that overall, the total phosphorus (TP) content of surface sediments in the Zipingpu Reservoir decreased from the tail to the front of the dam. The TP content ranged from 682.39 to 1609.06 mg/kg, with an average value of 1121.08 mg/kg. The TP content at some sampling points was affected by exogenous input. Inorganic phosphorus (IP) was the main form of phosphorus in surface sediments and had a proportion of 89.38%. Among the forms of IP, the content of Ca-P was larger than that of O-P; Ex-P, Fe-P, and Al-P had the lowest contents. Particulate phosphorus (PP) was the main form of phosphorus in the overlying water of the Zipingpu Reservoir and was strongly affected by hydrodynamic conditions. The content of total dissolved phosphorus (TDP) in the overlying water was relatively low. To further understand the risk of phosphorus release in the surface sediments in the reservoir, the rate and flux of phosphorus exchange at the sediment-overlying water interface were investigated through laboratory experiments. The results showed that both water temperature and pH significantly affected the sediment release rate, but the influence of water temperature was more significant. Acidic and alkaline conditions were conducive to the release of phosphorus from sediment, while a neutral environment was not. The release rate significantly increased with increasing water temperature, and a positive linear relationship was found between these two parameters. The sediment exhibited absorption characteristics when the water temperature was extremely low and exhibited releasing characteristics at a high temperature. These results could provide a theoretical basis for the management and protection of reservoir water environments.

Biodiversity and Sacred Sites: Vernacular Conservation Practices in Northwest Yunnan, China

2008 ◽  
Vol 12 (1) ◽  
pp. 74-90 ◽  
Author(s):  
Christopher Hakkenberg
Keyword(s):  
International Organizations ◽  
Southwest China ◽  
Environmental Policies ◽  
Conservation Strategies ◽  
Conservation Practices ◽  
Sacred Sites ◽  
Individual Level ◽  
Northwest Yunnan ◽  
Global And Local

AbstractBiodiversity conservation strategies around the world have been criticized when the goals of international organizations clash with the needs and traditions of local people. While the characterization of global conservation initiatives as a clash between scientifically-informed environmental policies and indigenous knowledge may retain discursive value in explaining the interaction of contending epistemologies, it is nonetheless an over-simplification of a dynamic, complicated and sometimes opaque and contradictory process. This paper sheds light on some of the conservation programs in southwest China as a case where these seemingly distinct knowledge regimes lie not in stark contrast, but in fact coexist within a localized discourse on biological and cultural diversity. In the example of the sacred site tradition of northwest Yunnan, disparate knowledge regimes have been negotiated and reinterpreted at the local, and even individual level to form dynamic and unique motivations for a conservation ethic. In this negotiation of indigenous and global epistemologies, classic distinctions separating global and local interests prove erroneous, or at the very least, unnecessary.

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