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| 1 | Study on the physiological indices of Pinus sibirica and Pinus koraiensis seedlings under cold stress显示文摘Although Pinus sibirica and Pinus koraiensis are resistant to cold or low temperatures in the cold temperate regions of the northern hemisphere,the former has a stronger cold resistance.Research has been limited to the comparison of physiological responses of the two species to cold stress.In this study,5-year-old seedlings of P.sibirica and P.koraiensis were subjected to six temperature treatments,[20℃(control),0℃,-20℃,-40℃,-60℃,and-80℃],under different stress periods(6,12,24,and 48 h).The results showed that differences in each physiological index were significant between P.sibirica and P.koraiensis,except for the permeability of cell membranes,reactive oxygen species,proline and soluble proteins.An ANOVA test indicated that there were extreme differences among the temperatures for each index,stress time and temperature 9 time for most indices.All indices showed a similar trend for P.sibirica and P.koraiensis with decreasing temperature or the extension of stress time.Soluble sugars and proline increased at 0 to-20℃and then remained unchanged with temperature decline.Other indices showed an increase from 20 to-20℃,stable from-20 to-40℃and a decrease from-40 to-80℃.All the indices increased and then declined along with the prolonged cold stress time,except for the control.From 0 to-40℃,the permeability of cell membranes,relative conductivity,reactive oxygen species and malonaldehyde of P.koraiensis seedlings were higher than in P.sibirica,but superoxide dismutase,peroxidase,catalase activity and soluble sugars,proline,and soluble proteins content emerged as opposite.This study compared the physiological mechanism responses to cold stress between P.sibirica and P.koraiensis to provide the basis for the introduction,distribution,and genetic improvement of these coniferous species. | Fang Wang Deyang Liang Xiaona Pei Qinhui Zhang Peng Zhang Jianqiu Zhang Zhimin Lu Yuchun Yang Guifeng Liu Xiyang Zhao | 2019 | Journal of Forestry Research2019，30，4： | 12 |
| 2 | Development of a modified Mooney-Rivlin constitutive model for rubber to investigate the effects of aging and marine corrosion on seismic isolated bearings显示文摘In this study,aging and marine corrosion tests of a large number of rubber material and rubber bearings have been carried out.The constitutive Mooney-Rivlin model parameters for a rubber isolated bearing have been determined.By applying the least-square method to the experimental data,the relationships between the aging time and the marine corrosion time with the constants in the constitutive model for a rubber bearing have been derived.Next,the Mooney-Rivlin model has been modified accordingly.Further,using the modified Mooney-Rivlin model and the Abaqus software,the performance of the rubber isolated bearings has been simulated.The simulation results have been compared to the experimental results so as to verify the accuracy of the modified model.The comparison shows that the maximum errors for the vertical and horizontal stiffnesses are 16.8%and 0.49%,respectively.Since these errors are considered acceptable,the accuracy of the modified constitutive model can be considered verified.The results of this study can provide theoretical support for the performance study on rubber isolated bearings under the complex ocean environment and the life-cycle performance evaluation of bridges and other offshore structures. | Zhao Guifeng Ma Yuhong Li Yanmin Luo Jiarun Du Chang | 2017 | Earthquake Engineering and Engineering Vibration2017，16，4： | 8 |
| 3 | Differentiation of illicit drugs with THz time-domain spectroscopy显示文摘The terahertz time-domain spectroscopy(THz-TDS) was used for sensing and identifying illicit drugs.The absorption spectra of seven illicit drug samples(morphine and its hydrochloride,cocaine hydrochloride,codeine phosphate,papaverine hydrochloride,pethidine hydrochloride,and thebaine) were studied by THz-TDS at 0.3-2.0 THz at room temperature.The geometric structure and vibration frequencies of morphine were calculated by density functional theory.The four absorption features were dominated by intra-/inter-molecular collective or lattice vibration modes.Each illicit drug has a distinct signature in its THz spectra.The results indicate that the THz-TDS can be used to identify and discriminate illicit drugs by their characteristic fingerprints. | LIU Guifeng MA Shihua JI Te ZHAO Hongwei WANG Wenfeng | 2010 | Nuclear Science and Techniques2010，21，4： | 7 |
| 4 | Genetic variation and selection of introduced provenances of Siberian Pine(Pinus sibirica) in frigid regions of the Greater Xing'an Range,Northeast China显示文摘Siberian Pine(Pinus sibirica) is an ecologically and economically important species in pristine forests throughout northern Russia. Four provenances of P. sibirica were introduced from Mongolia and Russia to the Greater Xing'an Range(the Daxing'anling), northeast China in 1993. The aim of this research was to study genetic variation and selection of the introduced four Pinus sibirica provenances. Heights(H), basal diameters(BD), survival rates(SR) and crown lengths(CL) of different families were measured as primary outcomes in different growth years. Results of data analyses demonstrated high coefficients of phenotypic variation(PCV) and heritability(H2) for H, BD and CL at 18 years after introduction. PCV and H2 increased with age. Correlations of growth traits between any two growth years were all significantly positive, but the correlation coefficient was smaller when the growth year interval was larger. Correlations between H and the original environment factors decreased gradually, indicating that with long-term subsistence in the new environment, the influence of the source environment declined. Colligation of multiple traits to estimate provenances showed that Novosibirsk, Tomsk, and Altai Mountains had higher survival rates and biomass, and proved more suitable for introduction and plantation in the Greater Xing'an Range in China. | Xiyang Zhao Cheng Wang Shuchun Li Wei Hou Shiqing Zhang Guijie Han Deng Pan Ping Wang Yufei Cheng Guifeng Liu | 2014 | Journal of Forestry Research2014，25，3： | 6 |
| 5 | Progeny test of tetraploid Betula platyphylla and preliminary selection of hybrid parents显示文摘Estimating genetic parameters of parental lines through progeny testing and choosing good hybrid parents are important for genetically improving seed orchard trees.In this study, 24 tetraploid progeny seedlings were used as experimental materials, which came from test cross design:six tetraploid Betula platyphylla lines(Q33, Q13, Q103,Q19, Q83 and Q14) as female parents and four individual B. platyphylla diploid lines(F3, F4, F9 and F11) as male parents were crossed. Variance analysis of height, diameter, height-to-diameter ratio, and internodal distance showed that the differences between hybrid combinations reached highly significant levels. Using multi-objective decisionmaking, we performed a comprehensive assessment of the various hybrid combinations. Using a selection rate of 20 % of the standard, five hybrids were selected;their genetic gains in average height, diameter, height-todiameter ratio, and internodal distance were 20.95, 6.07,13.07 and 8.96 %, respectively. We also analyzed the combining ability and genetic parameter effect values of parents and hybrid combinations. The combined analysis revealed that Q13, Q103, Q33 and Q83 were superior females; F3, F4, and F9 were superior males; and F3 × Q13, F4 × Q83 and F9 × Q33 were superior hybrid combinations. The heights and diameters of these progenies were 22.49 and 11.48 % greater than average,respectively. | Huanwen Xu Yu Liu Jing Jiang Guifeng Liu Xiyang Zhao | 2016 | Journal of Forestry Research2016，27，3： | 5 |
| 6 | Post-marketing safety surveillance and reevaluation of Motherwort injection:A clinical study of 10094 cases显示文摘OBJECTIVE:To investigate the safety profiles of Motherwort injection(MI).METHODS:A multi-center,prospective and drugderived hospital intensive monitoring method was conducted to assess the safety of MI in real world applications.This study was based on a very large population after the injection was approved and marketed in China.All patients using the injection in participating hospitals were monitored to determine the incidence,pattern,severity and outcome of associated adverse events.RESULTS:The post-marketing surveillance was performed in 10 094 female patients from April to December,2015.The incidence of adverse drug reactions(ADRs) was 0.79‰(8/10 094).Among the 8 patients,the reported adverse events mainly included systemic abnormalities,such as fever,chills and eyelid edema;skin and appendages disorders,such as pruritus and rash;gastrointestinal disorders,such as nausea,abdominal distension and pain;heart rate and rhythm disorders,such as palpitation and increased heart rate.All of these ADRs were mild in severity.CONCLUSION:In this study the ADRs incidence rate of MI is very low,which supports that it is generally safe for use in obstetric and gynecological diseases.However,the total number of 8 ADRs recorded over a relatively short time span seems limited,and the low number of reports could not represent an absolute guarantee of safety. | Cao Shan Zhang Wenhao Zhao Ziwei Heng Mingli Bu Huaien Wang Hongwu Liu Xinghui Wang Zhong Cai Yan Ma Yuyan Cui Shihong Deng Jihong Ding Guifeng Ding Yajuan Dong Linhong Duan Zhentao Fan Ling Fan Yang Fu Fen He Jing Ji Shuying Jin Lin Li Hong Li Hongying Liao Tao Lu Wei Luo Xiucui Lü Zhihui Ma Fengchun Ma Dafeng Shi Tianyun Sun Juying Sun Xiaotong Teng Hong Wang Jinhua Wang Ruihua Wang Ying Wang Zhengling Xi Jie Xu Minjuan Xu Zhihong Yan Qian Yang Cuirong Yang Yimei Yin Jie Yu Jinhua Yuan Wenjun Zhang Guanli Zhang Meihua Zhao Renfeng Zhong Yonghong Zhou Jian | 2018 | Journal of Traditional Chinese Medicine2018，38，4： | 4 |
| 7 | Analysis of three types of triterpenoids in tetraploid white birches(Betula platyphylla Suk.) and selection of plus trees显示文摘Betulin, oleanolic acid, and betulinic acid are naturally occurring pentacyclic triterpenoids that have significant medicinal value. Considerable amounts of these triterpenoids are available in the outer bark of white birch.In this study, we used ultrasound-assisted extraction(UAE)to extract triterpenoids from birch bark rapidly and with high efficiency. Using high performance liquid chromatography(HPLC), three types of triterpenoids were separated and detected. We examined the differences among triterpenoids extracted from diploid versus tetraploid white birch. Then, we used factor analysis to screen out tetraploid white birches with comprehensively excellent performance. The results indicate that the optimum conditions for extraction include the use of ethanol as an extraction solvent, a solid-to-liquid ratio of 0.1 g/10 ml,ultrasonic power set at 100 W, a temperature of 60 °C and an extraction time of 15 min. A reversed-phase C18 column(4.6 mm × 250 mm × 5 lm) with a column temperature of 30 °C and the mobile phase composed of A(acetonitrile) and B(0.1 % aqueous phosphoric acid, v/v)at a flow rate of 0.5 ml/min were used, and the detection wavelength was 195 nm. No significant difference was observed between diploid and tetraploid white birch in terms of the content of three types of triterpenoids(at a confidence level of 0.05). As triterpenoid content, height,and DBH(diameter at breast height) are strongly interrelated, we used factor analysis to evaluate all individuals,and we screened out six plus trees with excellent comprehensive characters. | Sui Wang Hui Zhao Jing Jiang Guifeng Liu Chuanping Yang | 2015 | Journal of Forestry Research2015，26，3： | 4 |
| 8 | Development of a computer vision system to detect inactivity in group-housed pigs显示文摘Excessive inactivity in farm animals can be an early indication of illness.Traditional way for detecting excessive inactivity in pigs relies on manual inspection which can be laborious and especially time-consuming.This paper proposed a computer vision system that could detect inactivity of individual pigs housed in group pens which is potential in alarming the farmer of the animals concerned.The system recorded sequential depth images for the animals in a pen and implemented a proposed image processing and logic analysis scheme named as‘DepInact’to keep track of the inactive time of group-housed individual pigs over time.To verify the robustness and accuracy of the developed system,a total of 656 pairs of corresponding depth data and color images,consecutively taken 4 s apart from each other,were attained.The verification process involved manually identifying all pigs using the color images captured.The results of identification of all pigs that were inactive for more than the preset period of time by DepInact were compared to those by manual inspection through the color images captured.An accuracy of 85.7%was achieved using the verification data,thus demonstrating that the developed system is a viable alternative to manual detection of inactivity of group-housed pigs.Nevertheless,more research is still needed to improve the accuracy of the developed system. | Christopher Chijioke Ojukwu Yaoze Feng Guifeng Jia Haitao Zhao Hequn Tan | 2020 | International Journal of Agricultural and Biological Engineering2020，13，1： | 1 |
| 9 | Effects of levamisole on the immune response and disease resistance of Clarias fuscus显示文摘 | Li Guifeng Guo Yungui Zhao Dianhui | 2006 | Aquaculture2006，，253： | 1 |
| 10 | Identification and phylogenetic analysis of Vibrio vulnificus isolated from diseased Trachinotus ovatus in cage mariculture 显示文摘 | LI Guifeng ZHAO Dianhui HUANG Lu | 2006 | Aquaculture2006，261，： | 1 |
| 11 | Identification and phylogenetic analysis of Vibrio vulnificus isolated from diseased Trachinotus ovatus in cage mariculture 显示文摘 | Li Guifeng Zhao Dianhui Huang Lu | 2006 | Aquaculture2006，261，： | 1 |
| 12 | Identification and phylogenetic analysis of Vibrio vulnificus isolated from diseased Trachinotus ovatus in cage mariculture显示文摘 | Guifeng Li Dianhui Zhao Lu Huang Jijia Sun Dong Gao Haifang Wang Yongli Tan Lanqing Liang | 2006 | Aquaculture2006，，1： | 1 |
| 13 | Identification and phylogenetic analysis of Vibfio vulnifieus isolated from diseased Trachinotus ovatus in cage mariculture 显示文摘 | LI GUIFENG ZHAO DIANHUI LU HUANG | 2006 | Aquaculture2006，261，1： | 1 |
| 14 | Detection of Type Ⅰ and Ⅲ collagen in porcine acellular matrix using HPLC-MS显示文摘Acellular matrix(ACM)has been widely used as a biomaterial.As the main component of ACM,collagen type and content show influence on the material properties.In this research,the collagen in ACM from different tissues of pig were determined by detection of marker peptides.The marker peptides of Type Ⅰ and Ⅲ collagen were identified from the digested collagen standards using ions trap mass spectrometry(LCQ).The relationship between the abundance of marker peptide and collagen concentration was established using triple quadrupole mass spectrometer(TSQ).The contents of Type Ⅰ and Ⅲ collagen in ACM from different tissues were determined.The method was further verified by hydroxyproline determination.The results showed that,the sum of Type Ⅰ and Ⅲ collagen contents in the ACM from small intestinal submucosa,dermis and Achilles tendon of pig were about 87.59,81.41 and 61.13%,respectively,which were close to the total collagen contents in these tissues.The results proved that this method could quantitatively detect the collagen with different types in the ACM of various tissues. | Yang Zhang Yi Chen Bo Zhao Jianping Gao Leilei Xia Fangyu Xing Yingjun Kong Yongchao Li Guifeng Zhang | 2020 | Regenerative Biomaterials2020，7，6： | 1 |
| 15 | Identification and phylogenetic analysis of Vibrio vulnificus isolated from diseased Trachinotus ovatus in cage mariculture显示文摘 | LI GUIFENG ZHAO DIANHUI HUANG LU | 2006 | Aquaculture2006，261，1： | 1 |
| 16 | The rooting of poplar cuttings: a review显示文摘 | Xiyang Zhao Huiquan Zheng Shanwen Li Chuanping Yang Jing Jiang Guifeng Liu | 2014 | New Forests2014，，1： | 1 |
| 17 | Fabrication and growth mechanism of one-dimensional Heusler alloy nanostructures with different morphologies on anodic aluminum oxide template by magnetron sputtering显示文摘Heusler alloys are a kind of intermetallic compounds with highly-ordered arrangement of atoms.Many attractive functional materials have been developed in Heusler alloys.Due to the application requirements of materials in new-generation electronic devices and spintronics devices,one-dimensional nanostructured Heusler alloys with special functions are needed.In this work,it is proposed to grow one-dimensional Heusler alloy nanostructures(1D-HA-NSs)by magnetron sputtering plus anodic aluminum oxide(AAO)template.Nanowires with different shapes,amorphous-coated(AC)nanowires and nanotubes were successfully grown for several Heusler alloys.AC nanowires are the unique products of our method.Heusler alloy nanotubes are reported for the first time.The one-dimensional nanostructures grow on the surface of the AAO substrate rather than in the holes.The top of the pore wall is the nanostructure growth point,the shape of which determines the morphology of the nanostructures.A general growth mechanism model of one-dimensional nanostructures on AAO template was established and further confirmed by experimental observation. | Xiaoyu MA Guifeng CHEN Xiaoming ZHANG Taoyuan JIA Weiqi ZHAO Zhaojun MO Heyan LIU Xuefang DAI Guodong LIU | 2022 | Frontiers of Materials Science2022，16，3： | 0 |
| 18 | Dual-function baicalin and baicalin-loaded poly(lactic-co-glycolic acid) nanoparticles: Immune activation of dendritic cells and arrest of the melanoma cell cycle at the G2/M phase显示文摘 | Huimei Wang Shulan Han Lianyan Wang Tingyuan Yang Guifeng Zhang Lian Yu Yue Zhao | 2018 | Particuology2018，16，2： | 0 |
| 19 | Numerical Simulation Study of Vibration Characteristics of Cantilever Traffic Signal Support Structure under Wind Environment显示文摘Computational fluid dynamics(CFD)and the finite element method(FEM)are used to investigate the wind-driven dynamic response of cantilever traffic signal support structures as a whole.By building a finite element model with the same scale as the actual structure and performing modal analysis,a preliminary understanding of the dynamic properties of the structure is obtained.Based on the two-way fluid-structure coupling calculation method,the wind vibration response of the structure under different incoming flow conditions is calculated,and the vibration characteristics of the structure are analyzed through the displacement time course data of the structure in the crosswind direction and along-wind direction.The results show that the maximum response of the structure increases gradually with the increase of wind speed under 90°wind direction angle,showing a vibration dispersion state,and the vibration response characteristics are following the vibration phenomenon of galloping;under 270°wind direction angle,the maximum displacement response of the structure occurs at the lower wind speed of 5 and 6m/s,and the vibration generated by the structure is vortex vibration at this time;the displacement response of the structure in along-wind direction increaseswith the increase of wind speed.The along-wind displacement response of the structure will increase with increasing wind speed,and the effective wind area and shape characteristics of the structurewill also affect the vibration response of the structure. | Meng Zhang Zhichao Zhou Guifeng Zhao Fangfang Wang | 2023 | Computer Modeling in Engineering & Sciences2023，，1： | 0 |
| 20 | 全国两会代表、委员谈标准显示文摘More than 5,000 of China’s political,business and social elite converged in Beijing in early March for the country’s most important annual meeting-the“Two Sessions”,which refers to the back-to-back meetings of two China’s major political bodies-the National People’s Congress(NPC)and Chinese People’s Political Consultative Conference(CPPCC). | Yang Zhen Deng Zhonghan Mai Jiaomeng Wang Yongtian Dong Mingzhu Ding Lei Lei Jun An Ting Zhang Tianren Ji Guifeng Liu Muhua Zhou Yunjie Zhao Yiwu Han Yongjin Guan Peijun Ni Minjing Zhao Dachun Lan Minbo | 2021 | China Standardization2021，，3： | 0 |
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