A5101885817- Marine and coastal ecosystems
- Isotope Analysis in Ecology
- Geology and Paleoclimatology Research
- Microbial Community Ecology and Physiology
- Arctic and Antarctic ice dynamics
- Marine Biology and Ecology Research
- Oceanographic and Atmospheric Processes
- Cryospheric studies and observations
- Methane Hydrates and Related Phenomena
- Remote Sensing and Land Use
- Groundwater and Isotope Geochemistry
- Insect-Plant Interactions and Control
- Regional Development and Management Studies
- Soil erosion and sediment transport
- Ocean Acidification Effects and Responses
- Biological Control of Invasive Species
- Probiotics and Fermented Foods
- Climate change and permafrost
- Landslides and related hazards
- Geochemistry and Elemental Analysis
- Marine Bivalve and Aquaculture Studies
- Land Use and Ecosystem Services
- Dengue and Mosquito Control Research
- Radioactivity and Radon Measurements
- Evaluation Methods in Various Fields
Sichuan Agricultural University
2024-2025
Xiamen University
2013-2025
Nanjing University
2023-2024
Luoyang Normal University
2024
State Ethnic Affairs Commission
2022-2023
Southwest Minzu University
2022-2023
Chinese Academy of Sciences
2012-2023
Institute of Earth Environment
2023
Institute of Tibetan Plateau Research
2018-2021
Changchun University of Technology
2021
Abstract Ocean circulation supplies the surface ocean with nutrients that fuel global productivity. However, mechanisms and rates of water nutrient transport from deep to upper are poorly known. Here, we use nitrogen isotopic composition nitrate place observational constraints on Southern into pycnocline (roughly 1.2 km), as opposed directly ocean. We estimate 62 ± 5% phosphate originate Ocean. Mixing, advection, accounts for most gross input pycnocline. in net, mixing carries away Despite...
Abstract. Marine diazotrophs convert dinitrogen (N2) gas into bioavailable nitrogen (N), supporting life in the global ocean. In 2012, first version of oceanic diazotroph database (version 1) was published. Here, we present an updated 2), significantly increasing number situ diazotrophic measurements from 13 565 to 55 286. Data points for N2 fixation rates, cell abundance, and nifH gene copy abundance have increased by 184 %, 86 809 respectively. Version 2 includes two new data sheets...
Abstract In the Southern Ocean, nitrogen (N) isotopes of organic matter and N oxygen (O) nitrate (NO 3 − ) have been used to investigate NO assimilation cycling in summertime period phytoplankton growth, both today past. However, recent studies indicate significance processes other seasons for producing annual cycle isotope changes. This study explores impact fall conditions on 15 N/ 14 (δ N) 18 O/ 16 O O) nitrite 2 Pacific Antarctic Zone using depth profiles from late summer/fall 2014....
Abstract Mesoscale anticyclonic eddies (ACEs) act as an important physical disturbance for marine biogeochemical cycle, but our knowledge of the dynamics critical new nitrogen (N) sources in such environments remains ambiguous. Here, we report concurrent data on two major N , that is, 2 fixation rate (via 15 bubble release method) and vertical diffusive nitrate flux ( F diff ‐), euphotic zone (EZ) northern South China Sea ACEs during summer 2020. Depth‐integrated rates (INF) were moderately...
Viral infections of the reproductive tract and testis in male yaks, often resulting from natural mating under grazing conditions, can lead to infertility due Leydig cell (LC) apoptosis, immune activation, oxidative stress, reduced testosterone production. Spermidine (SPD), a potential therapeutic agent with antioxidant anti-aging properties, might alleviate oxidant response, virus infection caused by apoptosis. In this study, firstly testicular cells yak were induced Poly(I:C),...
Abstract Here, we present the first combined results of N 2 fixation rates ( 15 assay), dissolved iron (dFe, < 0.2 μm), and primary production (PP) 14 C assay) in northwestern South China Sea (NWSCS) coastal upwelling region during summer. Surface rate ranged between 0.1 nmol L −1 d 5.6 (average 1.0 , n = 50) under nonbloom conditions. At a Trichodesmium bloom station, was ∼ 3 orders magnitude higher. Depth‐integrated 7.5 μmol m −2 163.1 46.4 ). Our indicate that is unlikely limited by Fe...
Avalanche disasters are extremely destructive and catastrophic, often causing serious casualties, economic losses surface erosion. However, far too little attention has been paid to utilizing remote sensing mapping avalanches quickly automatically mitigate calamity. Such endeavors limited by formidable natural conditions, human subjective judgement insufficient understanding of avalanches, so they have incomplete inaccurate. This paper presents an objective widely serviceable method for...
Abstract Dissolved organic nitrogen (DON) is the dominant form of fixed in most low and middle latitude ocean surface waters. Here, we report measurements DON isotopic composition (δ 15 N) from west South China Sea (SCS), with goal providing new insight into cycling. The concentration correlated ( r = 0.70, p < 0.0001) chlorophyll a concentration, indicating production these δ N fall relatively narrow range (4.6 ± 0.1 μM 4.3 0.2‰ vs. air, respectively; SD ), similar to other regions. mean...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 447:77-86 (2012) - DOI: https://doi.org/10.3354/meps09509 Nitrogen fixation in East China Sea and southern Yellow during summer 2006 Run Zhang1, Min Chen1,2,*, Jianping Cao1, Qiang Ma1, Junhong Yang1, Yusheng Qiu1,2 1Department of Oceanography, 2State Key Laboratory Environmental Science, Xiamen University,...
Abstract The 210 Po‐ Pb pair is increasingly used as a proxy of quantifying organic carbon export from the euphotic zone. However, disequilibria between Po and in mesopelagic water have been poorly studied. Here we present unusual deficiencies with respect to (200–1000 m) South China Sea (SCS). total particulate matter (TPM) increased by up 32% layer comparing Po/ ratio varied 0.41 0.98 an average 0.72 ± 0.19, showing enhanced removal water. On average, 23% at slope stations, respectively....
For the analysis of medical images, one most basic methods is to diagnose diseases by examining blood smears through a microscope check morphology, number, and ratio red cells white cells. Therefore, accurate segmentation cell images essential for counting identification. The aim this paper perform smear image combining neural ordinary differential equations (NODEs) with U-Net networks improve accuracy segmentation. In order study effect ODE-solve on speed network, ODE-block module was added...
Abstract The high sedimentation rate but low primary production in surface ocean raised a question whether particles from local upper water column could support deposition the Aleutian Basin. Here we first present large 210 Po‐ Pb disequilibria deep of Dissolved Po and were depleted relative to 226 Ra, respectively, below 1000 m, as well decreased with depth, suggesting enhanced particle scavenging water. residence times (1–2 a) comparable those column, indicating that rates export fluxes...
Abstract Asian dust delivers highly reactive iron (Fe HR ) to the Pacific Ocean, affecting marine biogeochemical cycles and Earth's climate. Tracing source of deposited in is vital for assessing global nutrient but poses challenges. This work applies ( 234 U/ 238 U) activity ratio determine pre‐deposition time provenance North Ocean sediments (Ocean Drilling Program site 1209B). Results indicate a consistent (134 ± 10 ka) over past 300,000 years, except during Marine Isotope Stage 7 when...
Semen is a complex fluid that contains spermatozoa and also functions as dynamic bacterial microecosystem, comprising probiotics, pathogenic bacteria, natural antimicrobial substances. Probiotic such Lactobacillus Bifidobacterium, along with bacteria like Pseudomonas aeruginosa Escherichia coli, play significant roles in semen preservation reproductive health. Studies have explored the impact of on sperm quality, providing insights into populations mammalian their influence function. These...