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Landscape changes have greater effects than climate changes on six insect pests in China

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Science China(Life Sciences) 2016年第6期59卷 627-633页

作者： Zihua Zhao Hardev S Sandhu fang ouyang Feng Ge State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of Zoology Chinese Academy of Sciences Department of Entomology College of Plant Protection China Agricultural University Everglades Research and Education Center Institute of Food and Agricultural Sciences University of Florida

In recent years, global changes are the major causes of frequent, widespread outbreaks of pests in mosaic landscapes, which have received substantial attention worldwide. We collected data on global changes(landscape and climate) and economic damage caused by six main insect pests during 1951–2010 in China. Landscape changes had significant effects on all six insect pests. Pest damage increased significantly with increasing arable land area in agricultural landscapes. However, climate changes had no effect on damage caused by pests, except for the rice leaf roller(Cnaphalocrocis medinalis Guenee) and armyworm(Mythimna separate(Walker)), which caused less damage to crops with increasing mean temperature. Our results indicate that there is slight evidence of possible offset effects of climate changes on the increasing damage from these two agricultural pests. Landscape changes have caused serious outbreaks of several species, which suggests the possibility of the use of landscape design for the control of pest populations through habitat rearrangement. Landscape manipulation may be used as a green method to achieve sustainable pest management with minimal use of insecticides and herbicides.

关键词： biological control cropland expansion global warming mosaic landscape pest damage

Cropland expansion facilitated the outbreak of cereal aphids during 1951–2010 in China

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Science Bulletin 2015年第11期60卷 1036-1037,1062页

作者： Zi-Hua Zhao fang ouyang Feng Ge State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of Zoology Chinese Academy of Sciences Department of Entomology College of Agriculture and Biotechnology China Agricultural University

Landscape-scale pattern could affect ecosystem service such as biocontrol of agricultural pests. Additionally, pest outbreak has been shown to be interwoven with land-use intensity. In the present research, we collected and analysed the 60-year data of cereal aphids and wheat area during 1951–2010 in China. Regression model was applied to analyse the relationship between pest damage and cropland expansion. Results showed that the percentage of cereal aphid outbreak area in wheat area increased rapidly during 1951–2010. It was 9 % during 1951–1960, while it was above 60 % during 2001–2010. In addition, effect of cropland expansion on damage of cereal aphids was significantly positive, which indicated that cropland expansion in agricultural landscape may enhance pest damage ***, we concluded that cropland expansion was one of the most important drivers of increasing pest outbreak,which should be considered in sustainable management of cereal aphids combined with other factor(e.g. climate changes and resistant variety) at large spatiotemporal scale.

关键词： Agricultural intensification Cereal aphids Biocontrol Ecosystem service Scale

T-cell immunoglobulin mucin molecule-3, transformation growth factor β, and chemokine-12 and the prognostic status of diffuse large B-cell lymphoma

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World Journal of Clinical Cases 2022年第32期10卷 11804-11811页

作者： Hao Wu Hui-Cong Sun Gui-fang ouyang Department of Hematology Ningbo First HospitalNingbo Clinical Research Center for Hematologic MalignanciesNingbo 315010Zhejiang ProvinceChina Department of Adult Internal Medicine Ningbo Women and Children's HospitalNingbo 315012Zhejiang ProvinceChina

BACKGROUND The effects of T-cell immunoglobulin mucin molecule-3(Tim-3),transforming growth factor β(TGF-β),and chemokine-12(CXCL12) expression on the prognosis of patients with diffuse large B-cell lymphoma(DLBCL) have not been *** To examine the correlation between Tim-3,TGF-β and CXCL12 expression and DLBCL *** Lymph node tissues of 97 patients with DLBCL and 93 normal-response hyperplastic lymph node tissues treated from January 2017 to May 2019 were selected as the DLBCL and control groups,*** expression of Tim-3,TGF-β,and CXCL12 was detected *** were followed up for 3 years,and progression-free survival was *** mult-ifactorial analysis was performed to analyze the risk factors for poor *** The positive expression rates of Tim-3,TGF-β,and CXCL12 were higher in DLBCL tissues than in non-cancerous(control) tissues(P < 0.05).One-year postsurgery,the positive expression rates of Tim-3,TGF-β,and CXCL12 were higher in patients with effective treatment than in those with ineffective treatment(P < 0.05).The 3-year progression-free survival of 97 patients with DLBCL was 67.01%(65/97).Univariate analysis revealed that clinical stage,bone marrow infiltration,International Prognostic Index(IPI) score,Tim-3 positivity,TGF-β positivity,and CXCL12 positivity were associated with poor prognosis(P < 0.05).Multivariate Cox regression analysis demonstrated that clinical stage Ⅲ–Ⅳ,bone marrow infiltration,mediate-to-high-risk IPI scores,Tim-3 positivity,TGF-β positivity,and CXCL12 positivity were independent risk factors affecting prognosis(P < 0.05).CONCLUSION DLBCL tissues exhibit high positive expression of Tim-3,TGF-β,and CXCL12,and a high expression of all three indicates a poor prognosis.

关键词： T-cell immunoglobulin mucin molecule-3 Transforming growth factorβ Chemokine-12 Diffuse large B-cell lymphoma

Clinical features and prognostic factors in 49 patients with follicular lymphoma at a single center:A retrospective analysis

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World Journal of Clinical Cases 2023年第14期11卷 3176-3186页

作者： Hao Wu Hui-Cong Sun Gui-fang ouyang Department of Hematology Ningbo First HospitalNingbo 315010Zhejiang ProvinceChina Adult Internal Medicine Ningbo Women and Children's HospitalNingbo 315012Zhejiang ProvinceChina

BACKGROUND Follicular lymphoma(FL)is a type of B-cell lymphoma that originates at the germinal center and has a low malignancy *** has become the most common inert lymphoma in Europe and America but has a relatively low incidence in *** To explore the clinical features,curative effects,and prognostic factors of *** Completed medical records of 49 patients with FL who were admitted to the Ningbo First Hospital from June 2010 to June 2021 were *** patients were definitively diagnosed by pathological biopsy or immunohistochemical *** diagnostic criteria were based on the 2008 World Health Organization classification of *** Arbor staging was performed according to the imaging and bone marrow examination *** stratification of all patients was performed based on the International Prognostic Index(IPI),age-adjusted IPI,Follicular Lymphoma International Prognosis Index(FLIPI),and FLIPI2 to compare the efficacy of different treatment regimens and analyze the related prognostic *** The age of onset in patients ranged from 24 to 76 years,with a median age of 51 *** patients developed the disease at 40–59 years of age,and the male:female ratio was 1.6:*** significant difference was noted in the curative effect between the non-chemotherapy,combined chemotherapy,and other chemotherapy regimens(P>0.05).Hemoglobin(Hb)level50%,bone marrow involvement,and clinical stagesⅢ–IV were associated with a poor prognosis of FL(P<0.05).However,the influence of other indicators was not statistically *** grouping was performed using the FLIPI,and the results showed that 24.5%,40.8%,and 34.7%of patients were in the low-,moderate-,and high-risk groups,*** to the survival analysis results,the survival rate of patients was lower in the high-risk group than in the other low-risk and moderate-risk groups(P<0.05).CONCLUSION FL mainly occurs in middle-aged and elderly men,prima

关键词： Follicular lymphoma Clinical feature Curative effect Prognosis Survival analysis Follicular Lymphoma International Prognosis Index

Effect of T-regulatory cells and interleukin-35, interleukin-10, and transforming growth factor-beta on diffuse large B-cell lymphoma

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World Journal of Clinical Cases 2023年第29期11卷 7075-7081页

作者： Hao Wu Hui-Cong Sun Gui-fang ouyang Department of Hematology The First Affiliated Hospital of Ningbo UniversityNingbo 315010Zhejiang ProvinceChina Adult Internal Medicine Ningbo Women and Children's HospitalNingbo 315012Zhejiang ProvinceChina

BACKGROUND Diffuse large B-cell lymphoma(DLBCL)is an aggressive non-Hodgkin lymphoma that affects B *** can develop in the lymph nodes and can be localized or *** DLBCL being considered potentially curable,little research has been conducted on the relationship between the body's immune response and *** To study the expression and significance of T-regulatory cells(Tregs)interleukin(IL)-35,IL-10,and transforming growth factor-beta(TGF-β)in *** Data from 82 patients with DLBCL who were initially admitted to The First Affiliated Hospital of Ningbo University(Zhejiang Province,China)between January 2017 and June 2022 and treated with standard first-line regimens were *** patients were lost to follow-up;thus,79 patients were included in the statistical analysis and then divided into three groups according to the evaluation of clinical efficacy:Incipient(new-onset and treatment-naïve),effectively treated,and *** healthy individuals were included in the control *** expression of peripheral blood T lymphocytes and their associated factors IL-35,IL-10,and TGF-βin the four groups were *** In contrast to the successfully treated and normal control groups,both the incipient and relapse-refractory groups exhibited greater proportions of CD4-positive(+)Tregs(P0.05).The correlation between IL-35 and IL-10 concentrations was significantly positive,with a correlation coefficient of 0.531(P<0.05).The correlation between IL-35 and TGF-βconcentration was significantly positive,with a correlation coefficient of 0.375(P<0.05).The correlation

关键词： Diffuse large B-cell lymphoma T-regulatory cells Interleukin-35 Interleukin-10 Transforming growth factorbeta Immune response

Determining the major Bt refuge crops for cotton bollworm in North China

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Insect Science 2015年第6期22卷 829-839页

作者： Le-Fu Ye Xue Fu fang ouyang Bao-Yu Xie Feng Ge State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of Zoology Chinese Academy of Sciences Beijing College of Agriculture Northeast Agricultural University Harbin College of Agricultural Resource and Environment HeilongjiangUniversity Harbin China

Evaluation of the effectiveness of refuge strategies involved in cotton boll- worm Bt resistance management would be aided by technologies that allow monitoring and quantification of key factors that affect the process under field conditions. We hy- pothesized that characterization of stable carbon and nitrogen isotopes in adult bollworm, Helicoverpa armigera （Htibner）（Lepidoptera： Noctuidae） moths may aid in determining the larval host that they developed upon. We found moths reared from larvae fed on peanut, soybean or cotton, respectively, could be differentiated using isotopic analyses that also corresponded to their respective larval host origins. These techniques were then used to classify feral second-generation bollworm moths caught in Bt cotton （Gossypium hirsu- rum） fields into different populations based on their isotopic signatures. In 2006-2007 feral moths captured in Bt cotton fields predominantly correlated with the peanut （Arachis hypogea） having served as their larval host, indicating this is the most important refuge crop for Bt-susceptible bollworm individuals （providing 58%-64% individuals） during independent moth peaks for the second generation in North China. The remaining feral moths correlated with soybean （Glycine max）（0-10%）; other C3 plant （20%-22%） and non-C3 plant （12%-14%） host types also provided some Bt-sensitive moths. Field obser- vations showed that peanut constitutes the primary refuge crop contributing to sustaining Bt-susceptible moths dispersing into cotton in North China. These results suggest that peanut may be a more effective refuge to sustain Bt-susceptible bollworm individuals and reduce the risk of development of a Bt-resistant biotype.

关键词： cluster analysis cotton bollworm host plant stable isotope transgenic Bt-cotton

Electronic Properties of Bilayer Zigzag Graphene Nanoribbons:First Principles Study

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Chinese Physics Letters 2011年第4期28卷 194-196页

作者： ouyang fang-Ping CHEN Li-Jian XIAO Jin ZHANG Hua School of Physics Science and Technology Central South UniversityChangsha 410083 College of Chemistry and Molecular Engineering and Beijing National Laboratory for Molecular SciencesPeking UniversityBeijing 100871

Based on the density functional theory,we calculate the dependence of the band structures of bilayer ziezaff-edzed grapnene nanonooons(BZGNRs)upon ribbon width,interlayer distance and stacking *** monolayer zigzag GNR,whose energy gap is always zero under different ribbon widths,the gap of BZGNR varies greathy with the ribbon width or the interlayer *** greatest gaps for AA-stacking and AB-stacking BZGNRs are about 0.22eV and 0.12eV,respectively,which implies that gap-tuning of AA-BZGNRs is more effective than that of *** results present a way to tune the band structures of BZGNRs and also provide theoretical guidance for the fabrication of GNR-based piezoelectric devices.

关键词： interlayer piezoelectric layer

Fluid identification and effective fracture prediction based on frequency-dependent AVOAz inversion for fractured reservoirs

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Petroleum Science 2021年第4期18卷 1069-1085页

作者： Muhammad Ajaz fang ouyang Gui-Hai Wang Shuang-Lian Liu Li-Xin Wang Jian-Guo Zhao State Key Laboratory of Petroleum Resources and Prospecting Key Laboratory of Geophysical Prospecting of CNPCChina University of Petroleum(Beijing)Beijing102249China China National Oil&Gas Exploration and Development Corporation Beijing100034China Sinopec Research Institute of Petroleum Engineering Beijing100101China Sinopec North China E&P Company Beijing100728China

Fluid and effective fracture identification in reservoirs is a crucial part of reservoir *** frequency-dependent AVO inversion algorithms have proven to be effective for identifying fluid through its dispersion ***,the conventional frequency-dependent AVO inversion algorithms based on Smith&Gidlow and Aki&Richards approximations do not consider the acquisition azimuth of seismic data and neglect the effect of seismic anisotropic dispersion in the actual *** aligned fractures in the subsurface medium induce *** seismic anisotropy should be considered while accounting for the seismic dispersion properties through fluid-saturated fractured *** in such reservoirs is frequency-related due to wave-induced fluid-flow(WIFF)between interconnected fractures and *** can be used to identify fluid and effective fractures(fluid-saturated)by using azimuthal seismic data via anisotropic dispersion *** this paper,based on Rüger’s equation,we derived an analytical expression in the frequency domain for the frequencydependent AVOAz inversion in terms of fracture orientation,dispersion gradient of isotropic background rock,anisotropic dispersion gradient,and the dispersion at a normal incident *** frequency-dependent AVOAz equation utilizes azimuthal seismic data and considers the effect of both isotropic and anisotropic *** Gabor Transform(RGT)is used to achieve highresolution frequency division *** then propose the frequency-dependent AVOAz inversion method to identify fluid and characterize effective fractures in fractured porous *** application to high-qualified seismic data of dolomite and carbonate reservoirs,the results show that the method is useful for identifying fluid and effective fractures in fluid-saturated fractured rocks.

关键词： Frequency-dependent AVOAz inversion P-wave anisotropy Seismic dispersion Effective fractures Fluid identification

Anisotropic dispersion mechanism of inter-salt shale oil reservoir in terrestrial saline lake sediments using cross-band experiments

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Science China Earth Sciences 2023年第7期66卷 1603-1621页

作者： Zengjia XIAO Jianguo ZHAO Qingliang ZHONG fang ouyang Xinze LIU Bohong YAN Zhi LI Ming MA Bin WANG Xiaoqiong WANG State Key Laboratory of Petroleum Resource and Prospecting China University of Petroleum(Beijing)Beijing 102249China Exploration and Production Research Institute of Jianghan Oilfield Branch of Sinopec Wuhan 434124China Institute of Earthquake Forecasting CEABeijing 100036China Yumen Oil Field Branch of CNPC Exploration and Development Research Institute Jiuquan 735000China

The rock mechanical properties and elastic anisotropy of terrestrial shale oil reservoirs are affected by various factors,such as lithology,structure,pores,fractures,and *** experimental study of dynamic and static elastic properties can provide important mechanism analysis for the prediction of geological and engineering “sweet spots” in shale *** are a large number of studies on the measurement of static mechanical properties of shale,but the experiments on dynamic crossband elastic anisotropy of terrestrial shale have not yet been conducted ***,we report the anisotropic dispersion mechanism of favorable lithofacies(lamellar dolomitic shale,with vertical and horizontal bedding) in the inter-salt shale oil reservoir of the Qianjiang Formation for different confining pressures and fluid saturation *** experiments were conducted by the cross-band rock physics measurement technology that comprised low-frequency stress-strain measurements and a high-frequency ultrasonic *** experimental results indicated that:(1) The elastic property dispersion of the terrestrial shale was stronger than that of marine shale due to the high viscosity of the medium oil in the terrestrial *** lamellar structures and interbedded fractures were the main factors that determined the strong anisotropy of the terrestrial shale.(2) The dispersion of elastic properties from low to high frequencies in a partial oil saturation state ranged from strong to weak;the wave-induced fluid flow or intrinsic dissipation of viscoelastic inclusions may be the dominant mechanisms that caused the seismic dispersion.(3) The elastic parameters measured in the direction vertical to the bedding plane had stronger dispersion and pressure sensitivity than those measured in the direction parallel to the bedding plane,and the anisotropy and pressure sensitivity at seismic frequencies were higher than those at the ultrasonic frequencies.(4) Fluid filling reduced

关键词： Terrestrial shale oil reservoir Rock physics Cross-band experiment Anisotropic dispersion Pressure sensitivity