Investigating the provenances and transport mechanisms of surface sediments in the offshore muddy area of Shandong Peninsula: Insights from REE analyses

2021 ◽  
pp. 103671
Author(s):  
Yingtao Zhu ◽  
Rui Bao ◽  
Longhai Zhu ◽  
Shenghui Jiang ◽  
Hanbao Chen ◽  
...  
Keyword(s):  
Surface Sediments ◽  
Transport Mechanisms ◽  
Shandong Peninsula ◽  
Muddy Area

Heavy metals distribution and contamination in surface sediments of the coastal Shandong Peninsula (Yellow Sea)

2013 ◽  
Vol 76 (1-2) ◽  
pp. 420-426 ◽  
Author(s):  
Guogang Li ◽  
Bangqi Hu ◽  
Jianqiang Bi ◽  
Qinuan Leng ◽  
Chunqiao Xiao ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Yellow Sea ◽  
Surface Sediments ◽  
Shandong Peninsula

Source identification of aluminum in surface sediments of the Yellow Sea off the Shandong Peninsula

2015 ◽  
Vol 34 (12) ◽  
pp. 147-153 ◽  
Author(s):  
Gang Xu ◽  
Jian Liu ◽  
Shaofeng Pei ◽  
Xianghuai Kong ◽  
Gang Hu ◽  
...  
Keyword(s):  
Yellow Sea ◽  
Source Identification ◽  
Surface Sediments ◽  
The Yellow Sea ◽  
Shandong Peninsula

Sedimentary signals of the upwelling along the Zhejiang coast, China

2020 ◽  
Author(s):  
Xin Zhang ◽  
Jian Liu ◽  
Yoshiki Saito
Keyword(s):  
Surface Sediments ◽  
Middle Part ◽  
Published Data ◽  
Sedimentation Rates ◽  
High Concentration ◽  
Sedimentary Processes ◽  
Deposition Patterns ◽  
Source To Sink ◽  
High Sedimentation ◽  
Muddy Area

<p>The muddy deposits of the Zhe-Min coastal area are of great importance to understand "source to sink" processes. However, the sedimentary processes that dominate along the Zhejiang coast remain controversial. Determining sedimentation rates is an important element of our understanding of sedimentary processes and deposition patterns. Therefore, 23 vibrocores were collected from the muddy area along the Zhejiang coast to analyse their sedimentation rates using <sup>210</sup>Pb geochronology. The spatial distribution of the sedimentation rates derived from the 23 vibrocores, as well as previously published data, demonstrated that the middle part of the study area around 29°N experienced relatively high sedimentation rates, which has never been reported in previous studies. This location of high sedimentation rates is approximately consistent with that of the Holocene maximum thickness deposition, finest surface sediments and high concentration of chlorophyll, resulting from the existence of upwelling along the Zhejiang coast besides the fluvial inputs. </p>

Phosphorus Distribution in the Sediments of Rongcheng Swan Lake, China

2011 ◽  
Vol 347-353 ◽  
pp. 2033-2038
Author(s):  
Li Gao ◽  
Peng Peng Song ◽  
Jin Zhi Hou
Keyword(s):  
Surface Sediments ◽  
Inorganic Phosphorus ◽  
Dominant Form ◽  
Sediment Grain Size ◽  
Shandong Peninsula ◽  
Inorganic P ◽  
Swan Lake ◽  
Anthropogenic Inputs ◽  
P Release ◽  
Northwestern Area

Rongcheng Swan Lake is a small lagoon in eastern Shandong Peninsula, China, whose water quality and ecological environment has deteriorated in recent years. The surface and core sediments were collected from Swan Lake to investigate the concentrations and spatial-vertical distribution of total phosphorus (TP) and various P forms. TP concentrations of the surface sediments (0-10 cm) were low, ranging from 79.15 mg kg-1 to 565.12 mg kg-1. TP concentrations in sediments were relatively high in the northwestern and central lake, and low near the sand spit, which was largely influenced by the anthropogenic inputs and sediment grain size. Inorganic P (IP) was the dominant form of TP, and apatite phosphorus (AP) was the major component of IP in surface sediments. At four of the six sediment profiles, the concentrations of TP, organic P (OP) and non-apatite inorganic phosphorus (NAIP) decreased rapidly with depth in the surface 0-10 cm layers, which was related to the increase of anthropogenic inputs in recent 20-30 years. In conclusion, the sediments in northwestern area had great potential for P release in the alkaline water of Swan Lake.

Provenance analysis of surface sediments in the Holocene mud area of the southern coastal waters off Shandong Peninsula, China

2016 ◽  
Vol 35 (5) ◽  
pp. 124-133 ◽  
Author(s):  
Xiaobo Zhang ◽  
Shipu Bi ◽  
Yong Zhang ◽  
Yuan Yang ◽  
Shanshan Liu ◽  
...  
Keyword(s):  
Coastal Waters ◽  
Surface Sediments ◽  
Provenance Analysis ◽  
Shandong Peninsula ◽  
The Holocene ◽  
Mud Area

Physical Properties of Isolated Perfused Renal Tubular Basement Membranes

1971 ◽  
Vol 29 ◽  
pp. 390-391
Author(s):  
Jared Grantham ◽  
Larry Welling
Keyword(s):  
Basement Membrane ◽  
Basement Membranes ◽  
Transport Mechanisms ◽  
Permeability Characteristics ◽  
Peritubular Capillaries ◽  
Strategic Location ◽  
Tubular Lumen ◽  
Glomerular Filtrate ◽  
Urine Formation ◽  
Renal Tubular

In the course of urine formation in mammalian kidneys over 90% of the glomerular filtrate moves from the tubular lumen into the peritubular capillaries by both active and passive transport mechanisms. In all of the morphologically distinct segments of the renal tubule, e.g. proximal tubule, loop of Henle and distal nephron, the tubular absorbate passes through a basement membrane which rests against the basilar surface of the epithelial cells. The basement membrane is in a strategic location to affect the geometry of the tubules and to influence the movement of tubular absorbate into the renal interstitium. In the present studies we have determined directly some of the mechanical and permeability characteristics of tubular basement membranes.

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