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| 1 | Water,organic matter,nitrogen and phosphorus contents in sediment of a large-scale mariculture area in the Zhelin Bay of eastern Guangdong Province,China显示文摘The Zhelin Bay is one of the most important bays for large-scale mariculture in Guangdong Province, China. Owing to the increasing human population and the expanding mariculture in the last two decades, the ecological environment has greatly changed with frequent harmful algal blooms. A monthly survey of water content, organic matter (TOM), and various forms of nitrogen and phosphorous in sediment from July 2002 to July 2003 in the bay was conducted. The results showed that the water content was correlated significantly with TOM and various forms of nitrogen and phosphorus and can be used as proxy for quick and rough estimate of these factors in the future surveys. TOM was also correlated significantly with various forms of nitrogen and phosphorus, indicating that it was one of the key factors affecting the concentrations and distributions of nitrogen and phosphorus in the investigated waters. Average total Kjeldhal nitrogen (TkN) content was(1 113.1±382.5)μg/g and average total phosphorus (TP) content was(567.2±223.3)μg/g, and both were much higher than those of similar estuaries in China and elsewhere. Average nitrogen and phosphorus tended to be higher inside than outside the bay, higher at aquaculture than non-aquaculture areas, and higher at fish-cage culture than oyster culture areas, suggesting that large-scale mariculture inside the bay played an important role in the eutrophication of the Zhelin Bay. Various forms of nitrogen and phosphorus concentrations were higher during the warm season (July—September), which was due to the increased decomposition and concentration of organic matter resulted from the fast growth and high mortality of the cultured species. Compared with July 2002, TkN and TP contents were much higher in July 2003, in consonance with the eutrophication of the Zhelin Bay. Because exchangeable phosphorus (Ex-P), iron-bounded phosphorus (Fe-P) and organic phosphorus (OP) combined accounted for 34.3% of the TP and authigenic phosphorus (Au-P) accounted for 49.2% of the TP, biological phosphorus (BP) that includes Ex-P, Fe-P, OP, and a portion of Au-P, thus accounted for 34.3% to 83.5% of the TP in the Zhelin Bay, which was within the percentage range, but with a high absolute value among the estuaries. Au-P was the most important species of phosphorus and accounted for 49.2% of the TP during the investigation. Since eutrophication in the water column can lead to reduction of pH in sediment and release of phosphorus in Au-P combined with authigenic spodiosite and calcium carbonate, high content of Au-P in the sediment maybe act as a time bomb that can trigger a vicious cycle of eutrophication and large-scale harmful algal bloom in the Zhelin Bay. | DONG Qiaoxiang LIN Junda SHANG Xu LI Jin HUANG Changjiang | 2008 | Acta Oceanologica Sinica2008，27，2： | 5 |
| 2 | Taxonomic composition, abundance and biomass of mesozooplankton in the Zhelin Bay—an estuary with intensive aquaculture显示文摘The Zhelin Bay is an estuary that supports intensive aquaculture in South China. Aside from traditional nutrient inputs derived from waste water and agriculture, the increased intensification of aquaculture has accelerated eutrophication during the past decade, jeopardizing aquacultural production. Annual variations of mesozooplankton in the Zhelin Bay were described, providing baseline data for long-term ecological studies. The taxonomic composition, abundance and biomass of mesozooplankton were studied monthly from July 2001 to July 2002 at 19 stations. Collections yielded 73 taxa, including 60 species of copepods, three species of cladocerans, as well as tunicates, chaetognaths, polychaetes, medusae, ostracods, rotatori, amphipods, planktonic mollusks, pelagic larvae, and planktonic shrimps. The Zhelin Bay was dominated by small mesozooplankton, with 76% of the species smaller than 1.4 mm, and 97% of the individuals smaller than 1.0 mm. Dominant species (Paracalanus crassirostris, Oithona brevicornis,and Penilia avirostris) accounting for 60% of the total abundance were less than 0.6 mm in body length. Species diversity, biomass, and total abundance of mesozooplankton were greater in the samples collected outside the bay than inside the bay. Samples from the outer and eastern boundaries of the bay had greater biomass, diversity, and abundance than those from the inner and western boundaries. Total abundance and biomass had a unimodal annual pattern and were the greatest in August 2001 when water temperature was maximum, and the least in February 2002 when water temperature was minimum. Canonical correspondence analysis (CCA) revealed that temperature, turbidity, nutrients and salinity were the main determinants of spatial and temporal distributions of mesozooplankton in the Zhelin Bay, and six distinct zones were identified across the 19 sampling stations. | DONG Qiaoxiang LIN Xiaoping HE Xin KELSO WE HUANG Changjiang | 2006 | Acta Oceanologica Sinica2006，25，5： | 3 |
| 3 | Polycyclic aromatic hydrocarbons in surface sediments of the Zhelin Bay in the South China Sea显示文摘This study examined the concentrations of polycyclic aromatic hydrocarbons (PAHs) in surface sediments collected in July 2004 from eight stations in the Zhelin Bay, one of the most important bays for large-scale mariculture in Guangdong Province. Thirteen individual parent PAH compounds were identified using high performance liquid chromatography with UV detection. The overall average concentration of total PAHs was 477.0 ng/g, ranging from 146.1 to 928.8 ng/g. Low molecular mass PAHs with two to three rings (e.g., acenaphthene) were dominant in each sample. The PAH concentration varied among sampling stations, with the highest concentration observed at bay outlets and the lowest found at stations outside the bay. Ratios of low to high molecular mass PAHs and fluoranthene to pyrene were used to determine the origin of PAHs, and results indicated mainly petroleum-derived contamination. Compared with other bays and harbors around the world, the total concentrations of PAHs in surface sediments at the Zhelin Bay are moderate, but this does not exclude the possibility of potential impact on human consumers because some strong carcinogenic PAHs with high molecular mass were found at the station with a nearby caged-fish and oyster farm. Long-term monitoring of PAH contamination in the Zhelin Bay is recommended to reduce the potential toxicological effects on aquatic organisms and humans. | DONG Qiaoxiang HUANG Hong HUANG Changjiang | 2007 | Acta Oceanologica Sinica2007，26，2： | 2 |
| 4 | BDE-47 disrupts axonal growth and motor behavior in developing zebrafish显示文摘 | Xiaojuan Chen Changjiang Huang Xuechun Wang Jiangfei Chen Chenglian Bai Yuanhong Chen Xiangping Chen Qiaoxiang Dong Dongren Yang | 2012 | Aquatic Toxicology2012，，： | 1 |
| 5 | Sperm cryopreservation in guppies and black mollies—A generalized freezing protocol for livebearers in Poeciliidae显示文摘 | Changjiang Huang Chunli Sun Xinyou Su Xingen Zhao Miao Miao Yueqin Liu Qiaoxiang Dong | 2009 | Cryobiology2009，，3： | 1 |
| 6 | Preparation of magnetic multi-functional molecularly imprinted polymer beads for determining environmental estrogens in water samples显示文摘 | Zhenkun Lin Qiaoya He Lituo Wang Xuedong Wang Qiaoxiang Dong Changjiang Huang | 2013 | Journal of Hazardous Materials2013，，： | 1 |
| 7 | BDE-47 disrupts axonal growth and motor behavior in developing zebrafish显示文摘 | Xiaojuan Chen Changjiang Huang Xuechun Wang Jiangfei Chen Chenglian Bai Yuanhong Chen Xiangping Chen Qiaoxiang Dong Dongren Yang | 2012 | Aquatic Toxicology2012，，： | 1 |
| 8 | Crystal structure of Schmallenberg orthobunyavirus nucleoprotein–RNA complex reveals a novel RNA sequestration mechanism显示文摘 | Haohao Dong Ping Li Bettina B?ttcher Richard M. Elliott Changjiang Dong | 2013 | RNA2013，，8： | 1 |
| 9 | Sperm cryopreservation of yellow drum Nibea albiflora : A special emphasis on post-thaw sperm quality显示文摘 | Tongren Dai Enhui Zhao Gang Lu Kai Che Qiutao He Yonglin Lu Qiongshan Fang Hansheng Wang Leyun Zheng Suping Li Changjiang Huang Qiaoxiang Dong | 2012 | Aquaculture2012，，： | 1 |
| 10 | Study on Anomalous Nuclear Fusion Reaction by Using HV Pulse Discharge显示文摘A study on anomalous nuclear fusion reaction by using lOkV pulsed high voltage discharge in deuterium was completed,During high voltage(HV)pulses no neutron signal was detected,but two peaks of gamma rays were detected.The energies of two gamma rays are at 425 and 870keV,respectively.It might be explained as^(108)Pd^(*)and^(56)Fe^(*) excited by high energy charged particles de-exciting radiations.Neither neutron signal nor gamma signal was detected in the intervals between the pulses. | HE Jingtang ZHANG Yingping REN Guoxiao ZHU Guoyi QIAN Zhongmin DONG Xiaoli DAI Changjiang HU Saixiong WANG Long YI Sunsheng | 1993 | Chinese Physics Letters1993，10，11： | 0 |
| 11 | Cryo-EM structures of human monkeypox viral replication complexes with and without DNA duplex显示文摘Dear Editor,The outbreak of human monkeypox in May 2022 across nonendemic countries is unusual compared to previous reports.A recent study indicates that the basic reproduction number(R_(0))of monkeypoxvirus(MPxV)is>1 in populations of men who have sex with men,and MPxV is reported to be transmitted via close contact and airborne droplets,suggesting that monkeypox poses a great threat to the global health. | Yunxia Xu Yaqi Wu Yuanyuan Zhang Ruixin Fan Yaxue Yang Danyang Li Shimin Zhu Biao Yang Zhengyu Zhang Changjiang Dong | 2023 | Cell Research2023，33，6： | 0 |
| 12 | Toward Improved Accuracy in Quasi-Static Elastography Using Deep Learning显示文摘Elastography is a non-invasive medical imaging technique to map the spatial variation of elastic properties of soft tissues.The quality of reconstruction results in elastography is highly sensitive to the noise induced by imaging measurements and processing.To address this issue,we propose a deep learning(DL)model based on conditional Generative Adversarial Networks(cGANs)to improve the quality of nonhomogeneous shear modulus reconstruction.To train this model,we generated a synthetic displacement field with finite element simulation under known nonhomogeneous shear modulus distribution.Both the simulated and experimental displacement fields are used to validate the proposed method.The reconstructed results demonstrate that the DL model with synthetic training data is able to improve the quality of the reconstruction compared with the well-established optimization method.Moreover,we emphasize that our DL model is only trained on synthetic data.This might provide a way to alleviate the challenge of obtaining clinical or experimental data in elastography.Overall,this work addresses several fatal issues in applying the DL technique into elastography,and the proposed method has shown great potential in improving the accuracy of the disease diagnosis in clinical medicine. | Yue Mei Jianwei Deng Dongmei Zhao Changjiang Xiao Tianhang Wang Li Dong Xuefeng Zhu | 2024 | Computer Modeling in Engineering & Sciences2024，139，4： | 0 |
| 13 | Cold exposure alters proteomic profiles of the hypothalamus and pituitary in female rats显示文摘Objective:Studies have shown that both short-term and long-term cold exposures disturb the biological process.The aim of the present study is to investigate the effects of intermittent cold exposure on proteomic profiles in the hypothalamus and pituitary of female Sprague-Dawley(SD)rats.Materials and methods:The rats were exposed to-10°C in a cabin for 4 h per day,and the treatment lasted for 14 days.The comparative label-free LC-MS/MS analysis was performed to investigate the changes of proteomic profiles in the hypothalamus and pituitary.ELISA analysis was used to validate the expression of differential proteins.Results:22 differential proteins in the hypothalamus and 75 differential proteins in the pituitary were identified by the label-free proteomic analysis.Gene ontology annotation and enrichment analysis indicated that cold exposure disrupted protein phosphorylation,filopodium assembly,intracellular protein transport,peripheral nervous system neuron axonogenesis,spinal cord development,Golgi organization,positive regulation of pseudopodium assembly,and cell-cell adhesion.Three proteins(Cdc42,Ptprs,and Setd7)were down-regulated in the cold exposure group.Conclusion:The results indicate that intermittent cold exposure alters the proteomic profiles of hypothalamus and pituitary in female rats. | Xiangyu Bian Xi Li Tong Xu Li Zhang Yongqiang Zhang Shuai Wu Renren Yang Weiyun Dong Changjiang Guo Danfeng Yang Weina Gao | 2023 | Frigid Zone Medicine2023，3，2： | 0 |
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