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Ecological niche shifts affect the potential invasive risk of Phytolacca americana(Phytolaccaceae)in China

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Ecological Processes 2023年第1期12卷 1-14页

作者： Yifeng Xu Xingzhuang Ye Qianyue Yang Huiying Weng Yipeng liu Sagheer Ahmad Guofang Zhang Qiuliang Huang Tianyu Zhang bao liu Forestry College Fujian Agriculture and Forestry UniversityFuzhou 350002FujianChina College of Landscape Architecture and Art Fujian Agriculture and Forestry UniversityFuzhou 350002FujianChina Forestry Science and Technology Center of Shunchang County ShunchangNanping 353200Fujian ProvinceChina

Background:Predicting the potential habitat of Phytolacca americana,a high-risk invasive species,can help provide a scientific basis for its quarantine and control *** the optimized MaxEnt model,we applied the latest climate data,CMIP6,to predict the distribution of potential risk zones and their change patterns for *** under current and future(SSP126,SSP245,SSP585)climate conditions,followed by invasion potential ***:The predictions of MaxEnt model based on R language optimization were highly accurate.A significantly high area of 0.8703 was observed for working characteristic curve(AUC value)of subject and the kappa value was *** the current climate conditions,the risk zones for *** were mainly distributed in Sichuan,Chongqing,Guizhou,Hunan,and Guangxi *** contribution rate of each climatic factor of *** was calculated using the jackknife *** four factors with the highest contribution rate included minimum temperature of coldest month(bio6,51.4%),the monthly mean diurnal temperature difference(bio2,27.9%),precipitation of the driest quarter(bio17,4.9%),and the warmest seasonal precipitation(bio12,4.3%).Conclusion:Under future climatic conditions,the change in the habitat pattern of *** generally showed a migration toward the Yangtze River Delta region and the southeastern coastal region of *** migration exhibited an expansion trend,highlighting the strong future invasiveness of the *** on the predictions,targeted prevention and control strategies for areas with significant changes in *** were ***,this study emphasizes the need of an integrated approach to effectively prevent the further spread of invasive plants.

关键词： Phytolacca americana MaxEnt Invasive plants Climate change

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Direct synthesis of single-phase α-CaSO4·0.5H2O whiskers from waste nitrate solution

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Chinese Journal of Chemical Engineering 2020年第6期28卷 1752-1754页

作者： Shuang Shao baozhong Ma Yongqiang Chen Wenjuan Zhang bao liu Peng Xing Chengyan Wang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Department of Materials Engineering The University of British ColumbiaVancouverBC V6T 1Z4Canada

Single-phaseα-CaSO4·0.5H2O whiskers were directly synthesized from waste Ca(NO3)2 solution using a hydrothermal method,and HNO3 was synchronously *** effects of reaction temperature and Ca^2+concentration on the phase composition and morphology of products were determined by X-ray diffraction and optical *** the basis of the experimental results,the formation diagram ofα-CaSO4·0.5H2O was plotted within the range of 5–35 g·L^-1 Ca^2+and 115°C–150°*** addition,the conditions of the direct synthesis ofα-CaSO4·0.5H2O were ***-crystallized,single-phaseα-CaSO4·0.5H2O whiskers with high aspect ratios(length,1785μm;diameter,10.63μm;aspect ratio,168)and HNO3(70.25 g·L^-1)were obtained at the optimal conditions of 25 g·L^-1 Ca^2+and 125°C.

关键词： α-CaSO4·0.5H2O whiskers Direct synthesis Formation diagram Waste Ca(NO3)2 solution HNO3 regeneration

Hydroxyl radical induced from hydrogen peroxide by cobalt manganese oxides for ciprofloxacin degradation

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Chinese Chemical Letters 2022年第12期33卷 5208-5212页

作者： Shuandi Wang Xiaodong Zhang Guozhu Chen bao liu Hongmei Li Junhua Hu Junwei Fu Min liu Hunan Joint International Research Center for Carbon Dioxide Resource Utilization School of Physics and ElectronicsState Key Laboratory of Powder MetallurgyHunan Provincial Key Laboratory of Chemical Power SourcesCentral South UniversityChangsha 410083China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China

Advanced oxidation processes(AOPs)are promising technology to remove organic pollutant in ***,the main problem in the AOPs is the low generation of hydroxyl radical(·OH)owing to the low decomposition efficiency of hydrogen peroxide(H_(2)O_(2)).Herein,the spinel type cobalt acid manganese(MnCo_(2)O_(4))with flower morphology was fabricated through a co-precipitation *** situ Fourier transform infrared spectroscopy confirms that the MnCo_(2)O_(4) with the optimal molar ratio of Co and Mn precursors(CM3,Co:Mn=3)has more Lewis acid sites compared with single metal oxide catalysts(Co_(3)O_(4) and Mn_(2)O_(3)),leading to the excellent performances for H_(2)O_(2) decomposition rate constant on CM3,which is about 15.03 and 4.21 times higher than those of Co_(3)O_(4) and Mn_(2)O_(3),*** a result,the obtained CM3 shows a higher ciprofloxacin degradation ratio than that of Co_(3)O_(4) and Mn_(2)O_(3).Furthermore,CM3 shows an excellent stability during several *** work proposes effective catalysts for ciprofloxacin decomposition and provides feasible route for treating practical environmental problems.

关键词： Catalytic decomposition Hydrogen peroxide Advanced oxidation processes Ciprofloxacin Pollutant degradation

Flexible lithium metal capacitors enabled by an in situ prepared gel polymer electrolyte

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Chinese Chemical Letters 2021年第11期32卷 3496-3500页

作者： Qizhi Zhong bao liu Bingjun Yang Yali Li Junshuai Li Xingbin Yan Key Laboratoy of Special Function Materials Structure Design of the Ministry of Education and School of Materials&EnergyLanzhou UniversityLanzhou 730000China Laboratory of Clean Energy Chemistry and Materials State Key Laboratory of Solid LubricationLanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

The rapid development of next-generation flexible electronics stimulates the growing demand for flexible and wearable power sources with high energy *** metal capacitor(LMC),combining with a Li metal anode and an activated carbon cathode,exhibits extremely high energy density and high power density due to the unique energy storage mechanism,thus showing great potential for powering wearable electronic ***,a flexible LMC based on an in situ prepared PETEA-based gel polymer electrolyte(GPE)was reported for the first *** to the high ionic conductivity of PETEA-based GPE(5.75×10^(−3)S/cm at 20℃),the assembled flexible LMC delivers a high capacitance of 210 F/g at 0.1 A/g within the voltage range from 1.5 V to 4.3 V ***/Li^(+),a high energy density of 474 Wh/kg at 0.1 A/g and a high power density of 29 kW/kg at 10 A/*** importantly,PETEA-based GPE endows the LMC with excellent flexibility and safety,which could work normally under abuse tests,such as bending,nail penetration and *** in situ prepared PETEA-based GPE simplifies the fabrication process,avoids the risk of leakage and inhibits the growth of Li dendrite,making LMC a promising flexible energy storage device for the flexible electronic field.

关键词： Lithium metal capacitor In situ prepared gel polymer electrolyte Flexible Energy density Power density

Circular RNA ciRS-7 promotes the proliferation and metastasis of pancreatic cancer by regulating miR-7-mediated EGFR/STAT3 signaling pathway

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Hepatobiliary & Pancreatic Diseases International 2019年第6期18卷 580-586页

作者： Lei liu Fu-bao liu Mei Huang Kun Xie Qing-Song Xie Chen-Hai liu Min-Jing Shen Qiang Huang Clinical Medical College Shandong UniversityJinan 250012China Department of General Surgery The First Affiliated Hospital of Anhui Medical UniversityHefei 230022China Anhui Province Key Laboratory of Hepatopancreatobiliary Surgery Hefei 230001China Department of General Surgery Anhui Provincial HospitalHefei 230001China

Background: Pancreatic ductal adenocarcinoma(PDAC) is the most deadly type of tumor, and its pathogenesis remains unknown. Circular RNAs(circRNAs) may be functional and bind to micro RNAs and consequently, influence the activity of targeted mRNAs. Recent researches indicate that one circRNA, ciRS-7, acts as a sponge of miR-7 and thus, inhibits its activity. It is well known that miR-7 is a cancer suppressor in many cancers. However, the relationship between ciRS-7 and miR-7, and the role of ciRS-7 in PDAC, remains to be elucidated. Methods: miR-7 and ciRS-7 expression in 41 pairs of PDAC tumors and their paracancerous tissues were detected by quantitative reverse transcription polymerase chain reaction(qRT-PCR). The relationships between their expression levels and clinicopathological features in PDAC tissues were assessed. The relationship between miR-7 and ciRS-7 was also assessed by Spearman’s correlation. We also used cell lines to evaluate the role of ciRS-7 in cell line behavior. The ciRS-7 interfere RNA(si RNA) and its empty vector were transfected into PDAC cells. PDAC cells proliferation and invasion abilities were detected by MTT assay and invasion analysis. The expression of proteins was assessed by Western blotting. Results: ciRS-7 expression was significantly higher in PDAC tissues than paracancerous tissues( P = 0.002). However, miR-7 expression showed the opposite trend( P = 0.048). Moreover, ciRS-7 expression was inversely correlated with miR-7 in PDAC( r s =-0.353, P = 0.023). ciRS-7 expression was also significantly elevated in venous invasion(3.72 ± 2.93 vs. 2.14 ± 1.26;P = 0.028) and lymph node metastasis(4.19 ± 2.75 vs. 2.32 ± 1.90;P = 0.016) in PDAC patients. Furthermore, ciRS-7 knockdown suppressed cell proliferation and invasion of PDAC cells( P < 0.05), and the downregulation of ciRS-7 resulted in miR-7 overexpression and subsequent inhibition of epidermal growth factor receptor(EGFR) and signal transducer and activator of transcription 3(ST

关键词： ciRS-7 miR-7 EGFR/STAT3 pathway PDAC

Pattern Classification of Enterovirus 71-Associated Hand, Foot, and Mouth Disease in Chinese Medicine: A Retrospective Study in 433 Cases

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Chinese Journal of Integrative Medicine 2018年第2期24卷 87-93页

作者： liu Yan HE Li-yun WEN Tian-cai YAN Shi-yan BAI Wen-jing liu bao-yan Institute of Basic Research in Clinical Medicine China Academy of Chinese Medical Sciences

Objective： To determine whether patterns of enterovirus 71（EV71）-associated hand, foot, and mouth disease（HFMD） were classified based on symptoms and signs, and explore whether individual characteristics were correlated with membership in particular pattern. Methods： Symptom-based latent class analysis（LCA） was used to determine whether patterns of EV71-HFMD existed in a sample of 433 cases from a clinical data warehouse system. Logistic regression was then performed to explore whether demographic, and laboratory data were associated with pattern membership. Results： LCA demonstrated a two-subgroup solution with an optimal fit, deduced according to the Bayesian Information Criterion minima. Hot pattern（59.1% of all patients） was characterized by a very high fever and high endorsement rates for classical HFMD symptoms（i.e., rash on the extremities, blisters, and oral mucosa lesions）. Non-hot pattern（40.9% of all patients） was characterized by classical HFMD symptoms. The multiple logistic regression results suggest that white blood cell counts and aspartate transaminase were positively correlated with the hot pattern（adjust odds ratio=1.07, 95% confidence interval： 1.006–1.115; adjust odds ratio=1.051, 95% confidence interval： 1.019–1.084; respectively）. Conclusions： LCA on reported symptoms and signs in a retrospective study allowed different subgroups with meaningful clinical correlates to be defined. These findings provide evidence for targeted prevention and treatment interventions.

关键词： hand foot and mouth disease pattern classification enterovirus A human Chinese medicine

Enhanced proliferation,invasion,and epithelial-mesenchymal transition of nicotine-promoted gastric cancer by periostin

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World Journal of Gastroenterology 2011年第21期17卷 2674-2680页

作者： Yu liu bao-An liu Division of Basic Medicine Department ofPathology Central South University Xiangya School of Medicine Changsha 410013 Hunan Province China

AIM:To investigate the contribution of periostin in nicotine-promoted gastric cancer cell proliferation,survival,invasion,drug resistance,and epithelial-mesenchymal transition(EMT).METHODS:Gastric cancer cells were treated with nicotine and periostin protein expression was determined by *** mRNA in gastric cancer cells was silenced using small interfering RNA(siRNA) techniques and periostin gene expression was evaluated by quantitative reverse transcription-polymerase chain *** cancer cells transfected with control or periostin siRNA plasmid were compared in terms of cell proliferation using the methylthiazolyldiphenyl-tetrazolium bromide *** apoptosis was compared using annexin V-fluoresceine isothiocyanate and propidium iodine double *** invasion was determined using the Boyden chamber invasion assay,and the EMT marker Snail expression was evaluated by ***:Nicotine upregulated periostin in gastric cancer cells through a COX-2 dependent pathway,which was blocked by the COX-2-specific inhibitor *** mRNA expression was decreased by ～87.2% by siRNA in gastric cancer cells,and stable periostinsilenced cells were obtained by G418 ***-silenced gastric cancer cells exhibited reduced cell proliferation,elevated sensitivity to chemotherapy with 5-fluorouracil,and decreased cell invasion and Snail expression(P < 0.05).CONCLUSION:Periostin is a nicotine target gene in gastric cancer and plays a role in gastric cancer cell growth,invasion,drug resistance,and EMT facilitated by nicotine.

关键词： Cyclooxygenase-2 Malignant growth RNA interference Snail Smoking

Study on Sound-Speed Dispersion in A Sandy Sediment at Frequency Ranges of 0.5–3 kHz and 90–170 kHz

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China Ocean Engineering 2017年第1期31卷 103-113页

作者： YU Sheng-qi liu bao-hua YU Kai-ben KAN Guang-ming YANG Zhi-guo National Deep Sea Center State Oceanic Administration Qingdao 266237 China Key Laboratory of Marine Sedimentology and Environmental Geology First Institute of Oceanography Qingdao 266061 China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and Technology Qingdao 266237 China

In order to study the properties of sound-speed dispersion in a sandy sediment, the sound speed was measured both at high frequency （90-170 kHz） and low frequency （0.5-3 kHz） in laboratory environments. At high frequency, a sampling measurement was conducted with boiled and uncooked sand samples collected from the bottom of a large water tank. The sound speed was directly obtained through transmission measurement using single source and single hydrophone. At low frequency, an in situ measurement was conducted in the water tank, where the sandy sediment had been homogeneously paved at the bottom for a long time. The sound speed was indirectly inverted according to the traveling time of signals received by three buried hydrophones in the sandy sediment and the geometry in experiment. The results show that the mean sound speed is approximate 1710-1713 m/s with a weak positive gradient in the sand sample after being boiled （as a method to eliminate bubbles as much as possible） at high frequency, which agrees well with the predictions of Biot theory, the effective density fluid model （EDFM） and Buckingham＇s theory. However, the sound speed in the uncooked sandy sediment obviously decreases （about 80%） both at high frequency and low frequency due to plenty of bubbles in existence. And the sound-speed dispersion performs a weak negative gradient at high frequency. Finally, a water-unsaturated Biot model is presented for trying to explain the decrease of sound speed in the sandy sediment with plenty of bubbles.

关键词： acoustic properties of sediment sound-speed dispersion sandy sediment bubbles

Genetic effects and plant architecture influences on outcrossing rate in soybean

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Journal of Integrative Agriculture 2019年第9期18卷 1971-1979页

作者： YAN Hao ZHANG Jing-yong ZHANG Chun-bao PENG bao ZHANG Wei-long WANG Peng-nian DING Xiao-yang liu bao-hui FENG Xian-zhong ZHAO Li-mei Key Laboratory of Soybean Molecular Design Breeding Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun 130102P.R.China Soybean Research Institute Jilin Academy of Agricultural Sciences/National Engineering Research Center for SoybeanChangchun 130033P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China

Outcrossing rate is an important determinant of cytoplasmic male sterile(CMS)breeding and hybrid seed production for heterosis in *** lines with a high outcrossing rate were screened for backcross breeding to obtain the high outcrossing rate maintenance B-lines and sterile *** in production practices will help to increase hybrid soybean *** this study,JLCMS82B and JLCMS89B were selected as parents for the construction of outcrossing rate segregation populations,and the progeny-array approach(PAA)and glyphosate resistant gene markers were used to determine outcrossing *** found that:(1)The outcrossing rate between JLCMS82B and JLCMS89B was significantly different;(2)the outcrossing rate of the F2 segregating populations was a quantitative trait,though whether an additive or epistatic effect exists required analysis with a triple test intersection analysis;(3)agronomic traits correlated with outcrossing rate;outcrossing rate was the highest with plant height of about 84 cm,lower number of plant branches,earlier flowering time,larger angle between the branches and the main stem,and with more divergent plant *** analysis between agronomic traits and outcrossing rate can effectively guide the screening of parents with a high outcrossing rate.

关键词： soybean outcrossing rate stem height branch number initial bloom date