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Temporal and Spatial Variations of Abundance of Phycocyaninand Phycoerythrin-Rich Synechococcus in Pearl River Estuary and Adjacent Coastal Area

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Journal of Ocean University of China 2016年第5期15卷 897-904页

作者： JIANG Tao chai Chao WANG Jifang ZHANG ling CEN jingyi LU Songhui Key Laboratory of Sustainable Development of Marine Fisheries of Ministry of Agriculture Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Qingdao Engineering Research Center for Rural Environment Qingdao Agricultural University College of Life Science and Technology Jinan University

Three surveys were carried out in Pearl River Estuary and adjacent coastal area in May, August, and November, 2013, to investigate the temporal and spatial variations of abundance of phycoerythrin-rich Synechococcus(PE-rich SYN) and phycocyanin-rich Synechococcus(PC-rich SYN). The effects of environmental factors on the alternation of the different Synechococcus groups were also elucidated. PE-rich SYN was detected in three surveys, whereas PC-rich SYN was detected in May and August, but not in November. The highest abundances of PE-rich SYN and PC-rich SYN were recorded in August and May, with mean values of 74.17×103 and 189.92×103 cells m L-1, respectively. From May to November, the relative abundance of PE-rich SYN increased, whereas that of PC-rich SYN declined. PE-rich and PC-rich SYN presented similar horizontal distributions with high abundance in the southern estuary in May, and in the western estuary in August. The abundances of PE-rich and PC-rich SYN were high at 27–32℃and salinity of 10–20. PC-rich SYN was not detected at < 24℃, and PC:PE-rich SYN decreased in abundance with salinity increase. When less than 20 mg L-1, suspended particulate matter(SPM) was helpful for Synechococcus growth. PE-rich SYN decreased in abundance when the concentration of dissolved inorganic nitrogen increased in May and November, and the concentration of phosphate increased in November. However, PC-rich SYN abundance and nutrients showed no correlation. Principal component analysis and regression analysis indicated that PE-rich SYN significantly correlated with the principal components that were affected by environmental factors.

关键词： Pearl nutrients suspended declined dissolved abundance ammonium inorganic estuary salinity

Synthesis and characterization of A1 doped δ-laminar crystal sodium silicate

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Chinese Chemical Letters 2009年第4期20卷 462-464页

作者： Xue jing Yang Ya ling Yang Wei Zhen Mou Sheng Liu Jun Hong chai Faculty of Life Science and Technology Kunming University of Science and Technology Kunming 650224 China Kunming Fruit Business and Economics Co. Ltd. Kunming 650106 China

An modified laminar crystal sodium silicate （A1-SKS-6） was synthesized by spray drying and high temperature crystallization using sodium silicate as silicon source, A1 atom as inorganic source and hexadecyltrimethy ammonium bromide （CTMAB） as the structure template. The hydrothermal stability of product was at least 1 h. The synthesized material was characterized by XRD and SEM. The results indicated that shape and intensity of XRD diffraction peak at 20 took changes, but raw material 8 phase crystal form kept unchanged, and assured high Ca^2＋ and Mg^2＋ binding capacity of the products. The Ca^2＋ and Mg^2＋ binding capacity of product is up to 380 mg Ca/g and 410mg Mg/g respectively. It was found that the hole of product became smaller and appeared rod structure based on SEM. The hydrothermal stability was increased due to the pillaring of AI atom.

关键词： A1 doping δ-Laminar crystal sodium silicate Detergent builder Stability

Importance of SALL4 in the development and prognosis of hepatocellular carcinoma

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World Journal of Gastroenterology 2016年第9期22卷 2837-2843页

作者： Fei Yin Xin Han Shu-Kun Yao Xiao-ling Wang Hui-chai Yang Department of Gastroenterology the Fourth Hospital of Hebei Medical University Department of Gastroenterology China-Japan Friendship Hospital Department of Pathology the Fourth Hospital of Hebei Medical University

AIM: To detect the expression of sal-like protein 4 (SALL4) and to explore its relationship with clinicopathological characteristics and prognosis of hepatocellular carcinoma (HCC).METHODS: One hundred and twenty-six samples of HCC tissue, 44 of adjacent noncancerous cirrhotic tissue and 10 of liver hemangioma tissue, were obtained from patients who underwent hepatectomy for HCC at the Fourth Hospital of Hebei Medical University. None of the patients had received any form of treatment before the operation. After resection, all the tissues were fixed in 10% neutral formaldehyde and embedded in paraffin. Expression of SALL4 was detected by immunohistochemistry. Patients were followed up for postoperative survival until February 2014. The relationships between SALL4 expression level and clinicopathological data and prognosis of HCC were ***: SALL4 expression was negative in the 10 samples of tissue from liver hemangioma, was weakly positive in the two samples from adjacent noncancerous cirrhotic tissue, and positive in 58 samples of HCC tissues. The differences were statistically significant (P < 0.05). Expression of SALL4 was higher in patients with higher α-fetoprotein (AFP) levels, portal vein tumor thrombus, and later clinical stage based on the Barcelona Clinic Liver Cancer classification (P < 0.05). Among patients with negative expression, weakly positive expression, positive expression, and strongly positive expression of SALL4, the median survival time was 39, 25, 23, and 9 mo, respectively (P < 0.001). When both AFP and SALL4 were detected, patients who were negative for both AFP and SALL4, SALL4-positive only, AFP-positive only, and positive for both AFP and SALL4, had a median survival time of 41, 38, 31, and 12 mo, respectively (P < 0.001).CONCLUSION: Expression of SALL4 is relevant to the prognosis of HCC patients. Patients with higher expression levels of SALL4 and AFP have worse prognosis.

关键词： Sal-like protein 4 Hepatocellular carcinoma Survival analysis α -Fetoprotein Prognosis

A new glucosyltransferase UGT78 from Iris sanguinea is a putative negative regulator in cadmium stress response

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Journal of Forestry Research 2024年第6期35卷 344-355页

作者： Gongfa Shi Guiling Liu Huijun Liu Lei Wang Aerdake Kuwantai Yu Du ling Wang Xiaolei Xi Rusong chai College of Landscape Architecture Northeast Forestry UniversityHarbin 150040People’s Republic of China Taiyuan Botanical Garden Taiyuan 030025People’s Republic of China Heilongjiang Forest Botanical Garden Harbin 150040People’s Republic of China

Urbanization has resulted in a significant degra-dation of soil quality,subjecting plants to persistent abiotic stressors such as heavy metal pollution,salinization,and ***-glycosyltransferases(UGTs)participate in protein glycosylation,secondary metabolite synthesis,and detoxification of exogenous toxic *** sanguinea Donn ex Hornem exhibits a high degree of resistance to various abiotic *** enhance the plant’s response to adversity,a novel glycosyltransferase belonging to the UGT78 family,encoding flavonoid 3-O-glucosyltransferase(UF3GT),was cloned from the monocot species *** with the control group,overexpression of IsUGT78 enhanced sensitivity to cadmium stress,while showing no significant impact under NaCl and d-sorbitol *** cadmium treatment,arabidopsis exoge-nously transformed with the IsUGT78 gene possessed lower germination,fresh weight,root length,and chlorophyll con-tent and increased malondialdehyde content than the wild type *** addition,metabolomics in leaves led to the identification of 299 flavonoid metabolites,eight and 127 which were significantly up-and down-regulated,respec-tively,in the transgenic *** note,all eight upregulated flavonoid compounds were *** that arabi-dopsis,which exogenously expresses the IsUGT78 gene,has reduced resistance to cadmium,IsUGT78 may lead to a reduced ability to cope with cadmium stress.

关键词： Iris sanguinea IsUGT78 Stress resistance Cadmium Glucosyltransferase

Induced current of high temperature superconducting loops by combination of exciting coil and thermal switch

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Chinese Physics B 2022年第3期31卷 521-526页

作者： Jia-Wen Wang Yin-Shun Wang Hua chai ling-Feng Zhu Wei Pi State Key Laboratory of New Energy Renewable Power System North China Electric Power UniversityBeijing 102206China

With its commercialization, the second-generation(2G) high temperature superconducting(HTS) RE–Ba–Cu–O(REBCO, RE is rare earth) tape is extensively applied to the superconducting magnets in the high magnetic fields. However,unlike low temperature superconducting(LTS) magnets, the HTS magnet cannot operate in the persistent current mode(PCM) due to the immature superconducting soldering technique. In this paper, an exciting method for two HTS sub-loops,so-called charging and load loops, is proposed by flux pump consisting of exciting coil and controllable thermal *** HTS sub-loops are made of an REBCO tape with two slits. An exciting coil with iron core is located in one sub-loop and is supplied with a triangular waveform current so that magnetic field is generated in another sub-loop. The influence of magnetic flux on induced current in load loop is presented and verified in experiment at 77 K. The relationship between the induced magnetic flux density and the current on the sub-loops having been calibrated, magnetic flux density, and induced current are obtained. The results show that the HTS sub-loops can be excited by a coil with thermal switch and the induced current increases with magnetic flux of exciting coil increasing, which is promising for persistent current operation mode of HTS magnets.

关键词： bridge high temperature superconducting(HTS)sub-loops induced current thermal switch

Synthesis and fungicidal activity of novel strobilurin analogues containing substituted N-phenylpyrimidin-2-amines

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Chinese Chemical Letters 2009年第11期20卷 1287-1290页

作者： Hui Chao Li Bao Shan chai Zhi Nian Li Ji Chun Yang Chang ling Liu Liaoning University Shenyang 110036 China Shenyang Research Institute of Chemical Industry Shenyang 110021 China

A number of novel strobilurin analogues containing substituted N-phenylpyrimidin-2-amines were synthesized. The structures of these new compounds were confirmed by ^1H NMR, IR and elemental analysis. Biological evalua... 详细信息

关键词： N-Phenylpyrimidin-2-amine Strobilurin Synthesis Fungicidal activity

Giant magneto-impedance effect of two paralleled amorphous microwires

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Rare Metals 2016年第4期35卷 344-348页

作者： Shu-ling Zhang Yue-Sheng chai Da-Qing Fang Lu-Cai Wang Da-Wei Xing Jian-Fei Sun School of Materials Science and Engineering Taiyuan University of Science and Technology School of Materials Science and Engineering Harbin Institute of Technology

Giant magneto-impedance （GMI） is effectively enhanced by the mutual magnetic interaction between two amorphous microwires. A comparative study on GMI properties of a single wire and two wires arranged in par- allel mode was reported in this work. Two-peak （TP） of impedance characteristic is presented when the dc external field changed from 0 to 320 A,m-＇ in two-wire system, which is attributed to successive magnetization process in two wires induced by their magnetic interaction. And the evolution of single peak to TP phenomenon, when the distance between two wires is upto 8 ram, evidences a distance dependence of transformation from successive magnetization to simultaneous via a corresponding dis- tance dependence of magnetostatic interactions. It is pro- posed that the recombination of magnetic interaction and the shielding effect results in a distance dependency of GMI response. When the distance is 8 ram, the magneti- zation process is close to synchronous between two wires, which give rises to higher circular permeability and better GMI response. The impedance ratio AZ/Z increases from 74.5 % of single wire to 172.4 % at 10 MHz. However, when the distance is upto 12 mm, the magnetic interaction is weak and magnetization process is completely independent, and GMI response decreases, relatively. This indicates that the GMI response could be effectively improved in a two-wire connection with an optical distance, which is promising and useful for the application of high-performance GMI sensors.

关键词： Amorphous microwire Magnetic interaction Giant magneto-impedance Magnetization

Characterization of precipitation in the background of atmospheric pollutants reduction in Guilin: Temporal variation and source apportionment

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Journal of Environmental Sciences 2020年第12期32卷 1-13页

作者： ling Li Hong Li Liang Peng Yongshan Li Yi Zhou Fahe chai Zhaoyu Mo Zhiming Chen jingying Mao Wenxing Wang State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China College of Chemistry and Chemical Engineering Southwest Petroleum UniversityChengdu 610500China Guilin Environmental Monitoring Center Station Guilin 541002China Scientific Research Academy of Guangxi Environmental Protection Nanning 530022China Institute of Environmental and Climate Research Jinan UniversityGuangzhou 511443China Environmental Research Institute Shandong UniversityQingdao 266237China

Rainfall samples were collected from three observation sites in Guilin from 2013 to 2017, and the chemical composition characteristics of precipitation and the contribution made by different ion sources were analyzed when atmospheric pollutants levels were reduced. The results showed that acid gas emissions and atmospheric pollutant concentrations continued to decline during the study period. However, the change in the volume-weighted mean p H at the three sites suggested that acid rain pollution was not alleviated and began to deteriorate after 2015. The continuing downward trend for alkaline neutralizing ions(Ca^(2+), NH_4^+) in precipitation indicated that the reduction in alkaline neutralizing substances in the atmosphere was an important factor that led to the deterioration in acid rain across Guilin. The principal component analysis and spearman correlation analysis indicated five sources of ions in precipitation. Quantitative assessment of these five sources indicated that fossil fuel combustion contributed the most ions concentration in precipitation at the three sites, followed by agriculture, terrestrial(crustal) sources, marine sources, and biomass burning. Long-distance airflow might affect the acidity, the electrical conductivity(EC), and ion concentrations in precipitation across Guilin. The airflow trajectory from the west and southeast directions corresponded to higher acidity and ion concentrations. According to the current air pollution control strategy planned by Guilin, reducing atmospheric coarse particles and NH_3 at the same time may potentially lead to further deteriorations in acid rain contents. Therefore, Guilin needs to develop more reasonable pollution prevention measures that synergistically control atmospheric pollutants and acid rain pollution.

关键词： Precipitation chemistry Characterization Source contributions Synergistic control Guilin

Synthesis of Caffeic Acid Sulphonamide Derivatives and Preliminary Exploration of Their Biological Applications

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Chemical Research in Chinese Universities 2020年第5期36卷 795-803页

作者： PENG Xiaoyu ZHAO Anran HUANG Kelin HU Tingju LIU Burning HUANG Yan CHEN Hailan chai ling LIN Cuiwu School of Chemistry and Chemical Engineeting Guangxi UniversityNanning 530004P.R.China School of Animal Science and Technology Guangxi UniversityNanning 530004P.R.China Laboratory Medicine Department First.Affiliated Hospital of Guangxi Medical UniversityNanning 530021P.R.China Guangxi Key Laboratory of Traditional Chinese Medicine Quality Standards Guangxi Institute of Traditional Medical and Pharmaceutical SciencesNanning 530022P.R.China China Academy of Science and Technology Development Guangxi Branch Nanning 530022P.R.China

Stnictural modification of native compounds is an effective way to develop new dmgs with increased pharmacological activities and improved material *** this study,cafteic acid sulphonamide derivatives(CSs)were synthesised by conjugating sulphonamides to the backbone of cafteic *** structures of these derivatives were elucidated by means of Fourier traiisfonn infrared spectroscopy(FTIR),1H NMR,13C NMR,and electrospray ionization mass spectroscopy(ESI-MS).A content determination method was established by ultraviolet *** lipophilicity,2,2-diphenyl-l-picrylhydrazy free radical(DPPH)scavenging capacity,anti-coagulant eitects,anti-bacterial activity,cytotoxicity,in vitro anti-proliterative activity against tumour cells,and the ability of the compounds to promote the proliferation of chondrocytes were *** results indicate that CSs exliibit strong DPPH scavenging activity,high lipophilicity,good anti-coagulant activities,wide anti-bacterial activity range,low cytotoxicity,and an excellent ability to promote chondrocyte proliferation.

关键词： Cafteic acid Sulphonamide Lipophilicity Anti-oxidant Cytotoxicity