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Synthesis,Structure and Properties of Three-dimensional Gd(Ⅲ),Eu(Ⅲ) Coordination Polymers via in situ Decarboxylation

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Chemical Research in Chinese Universities 2009年第5期25卷 614-619页

作者： wang chuan-sheng GU Xiao-fu SUN Ya-guang GAO En-jun ZHANG Wan-zhong Laboratory of Coordination Chemistry Shenyang Institute of Chemical Technology Shenyang 110142 P. R. China

Two three-dimensional lanthanide（Ⅲ） coordination polymers with the formula [Ln（PYDC）（NA）（H2O）]n [Ln=Gd（1）, Eu（2）, H2PYDC=pyridine-2,5-bicarboxylic acid, HNA=nicotinic acid] have been hydrothermally synthesized and characterized by elemental analysis, IR, and single crystal X-ray diffraction. The NA came from in situ decarboxylation of the part of PYDC. X-ray single crystal structural analyses reveal that complexes 1 and 2 are isomorphous, they possess the 43.63 topology assembled by Gd^3＋/Eu^3＋ and two different multidentate carboxylate ligands Magnetic measurements show that antiferromagnetic coupling exists between adjacent Gd^3＋ ions in complex 1. The complex 2 exhibits the corresponding characteristic luminescence in the visible region under an excitation at 305 nm.

关键词： Coordination polymer Decarboxylation Luminescence Magnetic property

Optimization of Ultrasonic-Assisted Extraction Process of Polysaccharides from American Ginseng and Evaluation of Its Immunostimulating Activity

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Journal of Integrative Agriculture 2014年第12期13卷 2807-2815页

作者： YANG Xiu-shi wang Li-jun DONG chuan Edmund Man King Lui REN Gui-xing Institute of Environmental Science Shanxi University Institute of Crop Sciences Chinese Academy of Agricultural Sciences Food and Nutritional Sciences Programme School of Life Science The Chinese University of Hong Kong Department of Physiology and Pharmacology Schulich School of Medicine & Dentistry The University of Western Ontario

Ultrasonic-assisted extraction （UAE） of American ginseng polysaccharides （AGP） was investigated using response surface methodology. Three-factor-three-level Box-Behnken design was employed to optimize the ultrasonic power, extraction time and ratio of water to raw material to obtain a high AGP yield. The analysis of variance and response surface plots indicated that ultrasonic power was the most important factor affecting the extraction yield. The optimal conditions were ultrasonic power 400 W, extraction time 71 min, and ratio of water to raw material 33 mL g-1. Under these conditions, the yield of AGP was 8.09%, which was agreed closely to the predicted value. Gas chromatography （GC） analysis showed that AGP was composed of arabinose, rhamnose, galactose, glucose, and galacturonic acid. Fourier transform infrared spectra revealed the general characteristic absorption peaks of AGP. In addition, AGP exhibited good immunostimulating activities by up-regulating the production of nitric oxide and cytokines. Compared with hot water extraction, UAE required shorter extraction time and gave a higher extraction yield, without changing the structure and immunostimulating activity of AGP. The results indicated that UAE could be an effective and advisable technique for the large scale production of plant polysaccharides.

关键词： ultrasonic-assisted extraction polysaccharides American ginseng response surface methodology immunostimulating activity

High-Power High-Temperature Continuous-Wave Operation of Quantum Cascade Laser at λ~4.6 μm without Lateral Regrowth

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Chinese Physics Letters 2012年第7期29卷 149-151页

作者： LIANG Ping LIU Feng-Qi ZHANG Jin-chuan wang Li-jun LIU jun-Qi wang Zhan-Guo Key Laboratory of Semiconductor Materials Science Institute of SemiconductorsChinese Academy of SciencesBeijing 100083

High-power quantum cascade lasers (λ =4.6 μm) working in continuous wave (cw) up to 90℃ are *** material was grown by solid-source molecular beam epitaxy and processed into narrow conventional ridge geometry without lateral *** cw output power of 850mW at 10℃ and more than 200mW at 90℃were obtained with threshold current densities of 1.34 and 2.47 kA/cm^(2),respectively,for a high-reflectivity-coated 12-μm-wide and 3-mm-long laser.

关键词： Quantum reflectivity narrow

Mg-based absorbable membrane for guided bone regeneration(GBR): a pilot study

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Rare Metals 2019年第6期38卷 577-587页

作者： Wei Peng jun-Xiu Chen Xian-Feng Shan Yi-chuan wang Fan He Xue-Jin wang Li-Li Tan Ke Yang Department of Stomatology Affiliated Zhongshan Hospital of Dalian UniversityDalian 116001China Medical School of Dalian University Dalian 116622China Institute of Metal Research Chinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China

A novel calcium-phosphate(Ca–P)-coated magnesium(Mg) membrane used for guided bone regeneration(GBR) was *** microstructural characterization, electrochemical test, immersion test,fluorescence labeling analysis and histopathological evaluation were carried *** results showed that Ca–P coating could obviously improve the corrosion resistance of the pure Mg *** in vivo results showed that Mg membrane coated with Ca–P would take 8 weeks to be completely ***, Mg membrane was completely absorbed within 1 *** evaluation showed that the Ca–P-coated Mg membranes were significantly better than Ti membranes at the early implantation time(4 weeks), and with the time prolonging,the performance of the coated Mg membrane was not as good as pure Ti membranes(but still better than blank group) at 8 and 12 *** coated biodegradable Mg membrane had a good promising application in *** further studies have to be done to further decrease the degradation rate of pure Mg membrane.

关键词： Bone defect Guided bone regeneration Ca–P-coated magnesium(Mg) membrane Bioabsorbable membrane

Study on the Optimum N Rates Under Spring Cabbage-Maize-Winter Cabbage Rotation System

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Agricultural Sciences in China 2007年第11期6卷 1322-1329页

作者： HE chuan-long GUO Xi-sheng wang Weng-jun WU Ji The Soil and Fertilizer Institute Anhui Academy of Agricultural Sciences Hefei 230031 P.R. China

In this paper, field trials in two soils with different Nmin were conducted to study the effects of mineral N content （Nmin） in soil on the maximum yield N rate （MYNR）, N recovery of cabbage under spring cabbage-maize-winter cabbage rotation system, and the correlation of N fertilization with cabbage yield and quality, and to provide the theoretical basis for N recommendation for high-yield, quality, and safety production of vegetables. The effects of six N rates of 0, 90, 180, 270, 360, and 450 kg ha-1 on the yield, N recovery of spring cabbage, maize, and winter cabbage, water-soluble sugar, Vc, and nitrate content of vegetables were observed. The results showed that soil Nmin had a remarkable influence on the MYNR in the first spring cabbage season. The MYNR for spring cabbage lessened in the soil with high Nmin. Soil Nmin, could be helpful to N recommendation only for the seasonal growing crop because its effects on the following crop yield was less with the active transformation of soil Nmin. The farmer＇s practice was 1.8-3.2 times higher than the MYNR of cabbage resulted in the nitrate enrichment of groundwater. Both N application rate and Nmin. in the soil profile affected N recovery, whereas, the relay intercropping maize in the cabbage field increased the N recovery at a higher N application rate. Lower N rate （less than 90 kg ha-1） improved the yield and quality of cabbage at the same time; higher N rates increased cabbage yield, but decreased the quality; extremely high N rates of application deceased both yield and quality of cabbage. It was concluded that the soil Nmin had close correlations with MYNR and N recovery of the seasonal growing cabbage. Although the residual effects of the N fertilizer were obvious in Shajiang black meadow soil, cabbage-maize rotation increased the N recovery in treatments with higher N rates. Considering the effects of N rates on cabbage yield and quality, it is necessary to reduce the N rate and lower the yield target for

关键词： cabbage rotation system N rate Shajiang black meadow soil

Congenital lipoid adrenal hyperplasia with Graves'disease:A case report

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World Journal of Clinical Cases 2022年第26期10卷 9390-9397页

作者： Yan-jun wang Cong Liu chuan Xing Le Zhang Wan-Feng Xu Hai-Ying wang Fu-Tao wang Department of Endocrinology Shengjing Hospital of China Medical UniversityShenyang 110004Liaoning ProvinceChina Department of Endocrinology the Second Hospital of ChaoyangChaoyang 110000Liaoning ProvinceChina Department of Endocrinology Changchun Central HospitalChangchun 110000Jilin ProvinceChina

BACKGROUND Congenital adrenal hyperplasia(CAH),which is caused by a mutation of the steroidogenic acute regulatory(StAR)*** patients are usually characterized by adrenal insufficiency in the first year of life,salt loss,glucocorticoid and mineralocorticoid deficiency,and female external genitalia,regardless of chromosomal *** with non-classical lipoid CAH usually develop glucocorticoid deficiency and mild mineralocorticoid deficiency at 2-4 years of *** SUMMARY Herein,We report the case of a woman with non-classic lipoid CAH combined with Graves’*** chromosome karyotype was 46,XX,and highthroughput sequencing revealed two missense variants in the StAR gene:c.229C>T(p.Q77X)and c.814C>T(p.R272C),which were inherited from both parents(non-close relatives).The patient was treated for Graves’disease in a timely manner and the dosage of glucocorticoid was adjusted during the treatment of Graves’*** This is the first case of non-classic lipoid CAH combined with Graves’disease reported in the Chinese *** addition to conventional glucocorticoid replacement therapy,timely adjustments were made to the dosages of thyroid hormone and glucocorticoid to avoid adrenal crisis as a consequence of the increased demand and accelerated metabolism of glucocorticoids when the patient was diagnosed with Graves’disease.

关键词： Lipoid congenital adrenal hyperplasia Steroidogenic acute regulatory protein Adrenal insufficiency Graves’disease Case report

Preparation of Poly(phosphoric acid piperazine) and Its Application as an Effective Flame Retardant for Epoxy Resin

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Chinese Journal of Polymer Science 2018年第5期36卷 655-664页

作者： Miao-jun Xu Si-Yu Xia chuan Liu Bin Li Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials College of Science Northeast Forestry University

A phosphorus-nitrogen containing flame retardant additive of poly（phosphoric acid piperazine）, defined as PPAP, was synthesized by the salt-forming reaction between anhydrous piperazine and phosphoric acid, and the dehydration polymerization under heating in nitrogen atmosphere. Its chemical structure was well characterized by Fourier transform infrared（FTIR） spectroscopy, ^（13）C and ^（31）P solid-state nuclear magnetic resonance measurements. The synthesized PPAP and curing agent m-phenylenediamine were blended into epoxy resin（EP） to prepare flame retardant EP thermosets. The effects of PPAP on the fire retardancy and thermal degradation behavior of cured EP/PPAP composites were investigated by limiting oxygen index（LOI）, vertical burning（UL-94）, thermogravimetric analysis/infrared spectrometry（TG-IR） and cone calorimeter tests. The morphologies and chemical compositions of char residues for cured epoxy resin were investigated by scanning electron microscopy（SEM） and X-ray photoelectron spectroscopy（XPS）, respectively. The results demonstrated that the flame retardant EP thermosets successfully passed UL-94 V-0 flammability rating and the LOI value was as high as 30.8% when incorporating 5 wt% PPAP into the EP thermosets. The TGA results indicated that the synthesized PPAP flame retardant additive possessed high thermal stability and excellent charring capability. Meanwhile, the incorporation of PPAP stimulated the epoxy resin matrix to decompose and charring ahead of time due to its catalytic decomposition effect, which led to a higher char yield at high temperature. The morphological structures and the analysis results of XPS for char residues of EP thermosets revealed that the introduction of PPAP benefited the formation of a sufficient, more compact and homogeneous char layer containing phosphorus-nitrogen flame retardant elements on the material surface during combustion. The formed char layer with high quality effectively prevented the heat transmission and d

关键词： Synthesis Poly(phosphoric acid piperazine) Flame retardant Epoxy resin thermosets Thermal degradation

Analysis of Cardiovascular Risk Factors in Newly Defined Stage 1 Hypertension among Chinese on the Basis of the 2017 ACC/AHA Hypertension Guidelines

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Biomedical and Environmental Sciences 2020年第1期33卷 48-52页

作者： LIANG Kai wang chuan YAN Fei YANG jun Peng TIAN Meng wang Ling Shu HOU Xin Guo CHEN Li Department of Endocrinology Qilu Hospital of Shandong UniversityInstitute of Endocrinology and Metabolism DiseaseShandong UniversityKey Laboratory of Endocrinology and Metabolism DiseaseShandong Province Medicine&HealthJinan 250012ShandongChina

In 2017,American College of Cardiology(ACC)/American Heart Association(AHA)et *** released the latest guidelines for adult hypertension,exactly including prevention,diagnosis,assess and treatment,in which blood pressure levels greater than 130/80 mm Hg were defined as hypertension[1].Based on these modified guidelines,the morbidity of hypertension in US increased from 32%to 46%.

关键词： CKD Analysis Cardiovascular Risk Factors Newly Defined Stage 1 Hypertension Chinese the Basis the 2017 ACC/AHA Hypertension Guidelines AHA ACC

Essential role of MALAT1 in reducing traumatic brain injury

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Neural Regeneration Research 2022年第8期17卷 1776-1784页

作者： Na Wu Chong-Jie Cheng Jian-jun Zhong jun-Chi He Zhao-Si Zhang Zhi-Gang wang Xiao-chuan Sun Han Liu Department of Neurosurgery the First Affiliated Hospital of Chongqing Medical UniversityChongqingChina Department of Neurosurgery Qilu Hospital of Shandong University(Qingdao Campus)QingdaoShandong ProvinceChina

As a highly evolutionary conserved long non-coding RNA,metastasis associated lung adenocarcinoma transcript 1(MALAT1)was first demonstrated to be related to lung tumor metastasis by promoting *** investigate the role of MALAT1 in traumatic brain injury,we established mouse models of controlled cortical impact and cell models of oxygen-glucose deprivation to mimic traumatic brain injury in vitro and in *** results revealed that MALAT1 silencing in vitro inhibited endothelial cell viability and tube formation but increased *** MALAT1-deficient mice,endothelial cell proliferation in the injured cortex,functional vessel density and cerebral blood flow were *** analyses and RNA pull-down assays validated enhancer of zeste homolog 2(EZH2)as a downstream factor of MALAT1 in endothelial ***-1,the Notch homolog 1(NOTCH1)agonist,reversed the MALAT1 deficiency-mediated impairment of *** together,our results suggest that MALAT1 controls the key processes of angiogenesis following traumatic brain injury in an EZH2/NOTCH1-dependent manner.

关键词： angiogenesis controlled cortical impact EZH2 Jagged-1 LncRNA MALAT1 NOTCH1 oxygen-glucose deprivation traumatic brain injury vascular remodeling