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Energy budgets of the Chinese green lacewing （Neuroptera： Chrysopidae） and its potential for biological control of the cotton aphid （Homoptera： Aphididae）

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Insect Science 2007年第6期14卷 497-502页

作者： feng GAO XIANG-HUI LIU feng ge State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of Zoology Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences Beijing China

Energy budgets of larval stages of the Chinese green lacewing, Chrysopa sinica （Tjeder）（Neuroptera： Chrysopidae） were determined under laboratory conditions at photoperiod of 14：10 L：D, 27 ± 1℃ and 75% ± 2% RH. The energy used as ingestion, assimilation, respiration, productivity and feces was constructed for each developmental stage. In addition, under these experimental conditions, the potential of C. sinica as a biological control agent was evaluated according to the ingestion by this predator and the energy content of cotton aphid, Aphis gossypii （Glover）（Homoptera： Aphididae）. The larval stage of C. sinica was able to consume 1281.4 1-day-old aphids, 1018.7 2-day-old aphids, 626.9 3-day-old aphids, 393.5 4-day-old aphids, 312.1 5-day-old aphids or 203.5 9-day-old aphids, respectively. No significant difference was detected between the estimated number of aphids consumed by the lacewings using energetic methods and the actual number of aphids consumed by the lacewings in this experiment. Our results showed that C. sinica is an important natural enemy of the cotton aphid, and energetic methods are very useful to quantify biological control efficacy of natural enemies.

关键词： Aphis gossypii biological control Chrysopa sinica ecological efficiency,energy budget predation

Asymptotic Approximations of Jacobi Functions and Their Zeros with Error Bounds

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Acta Mathematica Sinica,English Series 2006年第3期22卷 729-740页

作者： Xiao feng ZHU xiu Chun LI Department of Basic Science Beijing Institute of Graphic Communication

The study of zeros of orthogonal functions is an important topic. In this paper, by improving the middle variable x（t）, we＇ve got a new form of asymptotic approximation, completed with error bounds, it is constructed for the Jacobi functions φu^（α,β）（t）（α 〉 -1） as μ→∞. Besides, an accurate approximation with error bounds is also constructed correspondingly for the zeros tμ,s of φu^（α,β）（t）（α≥ 0） as μ→∞, uniformly with respect to s = 1, 2,....

关键词： Asymptotic approximation Jacobi function Zero Error bounds

Whittaker Modules for the Derivation Lie Algebra of Torus with Two Variables

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Acta Mathematica Sinica,English Series 2016年第10期32卷 1177-1188页

作者： Hai feng LIAN xiu Fu ZHANG Department of Mathematics Fujian Agriculture and Forestry UniversityFuzhou 350002P.R.China School of Mathematics and Statistics Jiangsu Normal UniversityXuzhou 221116P.R.China

Let L be the derivation Lie algebra of C[t1^±1 , t2^±1 ]. Given a triangle decomposition L = L＋ η ＋ L-, we define a nonsingular Lie algebra homomorphism φ ： L＋ → C and the universal Whittaker L-module We of type φ. We obtain all Whittaker vectors and submodules of We. Moreover, all simple Whittaker L-modules of type φ are determined.

关键词： Whittaker vector Whittaker module simple module derivation Lie algebra

Recent progress in the applications of presynaptic dopaminergic positron emission tomography imaging in parkinsonism

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Neural Regeneration Research 2025年第1期20卷 93-106页

作者： Yujie Yang Xinyi Li Jiaying Lu Jingjie ge Mingjia Chen Ruixin Yao Mei Tian Jian Wang fengtao Liu Chuantao Zuo Key Laboratory of Arrhythmias Ministry of EducationDepartment of Medical GeneticsShanghai East HospitalSchool of MedicineTongji UniversityShanghaiChina Department of Neurology National Research Center for Aging and MedicineNational Center for Neurological Disordersand State Key Laboratory of Medical NeurobiologyHuashan HospitalFudan UniversityShanghaiChina Department of Nuclear Medicine&PET Center National Center for Neurological Disordersand National Clinical Research Center for Aging and MedicineHuashan HospitalFudan UniversityShanghaiChina International Human Phenome Institutes(Shanghai) ShanghaiChina Human Phenome Institute Fudan UniversityShanghaiChina

Nowadays,presynaptic dopaminergic positron emission tomography,which assesses deficiencies in dopamine synthesis,storage,and transport,is widely utilized for early diagnosis and differential diagnosis of *** review provides a comprehensive summary of the latest developments in the application of presynaptic dopaminergic positron emission tomography imaging in disorders that manifest *** conducted a thorough literature search using reputable databases such as PubMed and Web of *** criteria involved identifying peer-reviewed articles published within the last 5 years,with emphasis on their relevance to clinical *** findings from these studies highlight that presynaptic dopaminergic positron emission tomography has demonstrated potential not only in diagnosing and differentiating various Parkinsonian conditions but also in assessing disease severity and predicting ***,when employed in conjunction with other imaging modalities and advanced analytical methods,presynaptic dopaminergic positron emission tomography has been validated as a reliable in vivo *** validation extends to screening and exploring potential neuropathological mechanisms associated with dopaminergic *** summary,the insights gained from interpreting these studies are crucial for enhancing the effectiveness of preclinical investigations and clinical trials,ultimately advancing toward the goals of neuroregeneration in parkinsonian disorders.

关键词： aromatic amino acid decarboxylase brain imaging dopamine transporter Parkinson’s disease parkinsonism positron emission tomography presynaptic dopaminergic function vesicle monoamine transporter type 2

甲壳胺膜负压伤口疗法对难愈性创面血管内皮生长因子和成纤维细胞的影响

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中国美容医学 2020年第9期29卷 92-95页

作者：王静魏霞张岚徐炜志葛秀峰狄青海张家诚薛峰逄丽华宗纲青岛市胶州中心医院烧伤整形外科山东胶州266300

目的:观察甲壳胺膜负压伤口疗法治疗难愈创面对其新生肉芽组织中血管内皮生长因子和成纤维细胞表达的影响。方法:2017年11月-2019年11月,笔者科室收治的100例难愈创面患者按随机数字表法分为治疗组(甲壳胺膜负压伤口疗法治疗)和对照组(... 详细信息

目的:观察甲壳胺膜负压伤口疗法治疗难愈创面对其新生肉芽组织中血管内皮生长因子和成纤维细胞表达的影响。方法:2017年11月-2019年11月,笔者科室收治的100例难愈创面患者按随机数字表法分为治疗组(甲壳胺膜负压伤口疗法治疗)和对照组(传统外科换药治疗),每组50例。患者入院后当日、治疗第7天、第14天分别留取创面中心肉芽组织标本送免疫组化检测,电子显微镜下观察肉芽组织中血管内皮生长因子(Vascular endothelial growth factor,VEGF)和成纤维细胞(Fibroblast)的表达情况,测算每组患者治疗后第7天和第14天VEGF和成纤维细胞分布密集和稀疏的情况。结果:入院当日,两组患者创面肉芽组织的VEGF和成纤维细胞均表达稀疏;第7天,治疗组患者中有66%的难愈创面肉芽组织的VEGF和成纤维细胞表达密集;第14天,治疗组患者中有69%的难愈创面肉芽组织的VEGF和成纤维细胞表达密集。而对照组在治疗第7天、第14天全部表达为稀疏。结论:甲壳胺膜负压伤口疗法可以使大部分难愈创面肉芽组织中成纤维细胞和血管内皮生长因子表达密集,从细胞蛋白水平证明该治疗方法可以有效促进难愈创面新生肉芽组织的生长。

关键词：负压伤口疗法甲壳胺膜难愈性创面血管内皮生长因子成纤维细胞

Leakage Prediction Method for Contacting Mechanical Seals with Parallel Faces

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Chinese Journal of Mechanical Engineering 2010年第1期23卷 7-15页

作者： SUN Jianjun WEI Long feng xiu GU Boqin College of Mechanical and Electronic Engineering Nanjing Forestry UniversitY Nanjing 21003 7 China Department of Engineering Mechanics Southeast University Nanjing 210096 China Fluid Sealing Technique Development Center Nanjing College of Chemical Technology Nanjing 210048 China College of Mechanical and Power Engineering Nanjing University of Technology Nanjing 210009 China

Since the beginning of the 20th century, many researches on the sealing characteristic of mechanical seals were carried out broadly and in depth by various methods and some leakage models were built. But due to the lack of the way to characterize the main factors of influence on the leakage, most of the early researches were based on the assumptions that the seal faces topography and the frictional conditions were invariant. In the early built models, the effect of the surface topography change of the seal face on the leakage rate was neglected. Based on the fractal theory, the contact of end faces of the rotary and stationary rings was simplified to be the contact of a rough surface and an ideal rigid smooth surface, and the contact interface＇s cavity size-distribution function as well as the fractal characteristic of the cavity profile curve was discussed. By analyzing the influence of abrasion on the seal face topography and the leakage channel, the time-correlation leakage prediction model of mechanical seals based on the fractal theory was established and the method for predicting the leakage rate of mechanical seals with parallel plane was proposed. The values of the leakage rate predicted theoretically are similar to the measured values of the leakage rate in the model test and in situ test. The experimental results indicate that the leakage rate of mechanical seals is a transient value. The surface topography of the end faces of the seal tings and its change during the frictional wear of mechanical seals can be accurately characterized by the fractal parameters. Under the work conditions of changeless frictional mechanism, the fractal parameters measured or calculated based on the accelerated testing equation can be used to predict the leakage rate of mechanical seal in service. The proposed research provides the basis for determining the leakage state and predicting working life of mechanical seal.

关键词： mechanical seal leakage rate fractal theory frictional wear accelerated test model

Clinicopathological differences between patients with schistosomal appendicitis and non schistosomal appendicitis:A retrospectively study of past ten years

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World Journal of Clinical Cases 2025年第2期13卷 24-32页

作者： Xiao-Yi Wang Yao Hao Zi-Jian Wang xiu-Liang Xu Jiang-Hua Yang Department of Infectious Diseases The First Affiliated of Wannan Medical CollegeWuhu 241001Anhui ProvinceChina

BACKGROUND Chronic schistosomiasis causes multiple organ and multiple system diseases,especially the digestive *** eggs are mainly deposited in the stomach,liver and colorectal,but a few eggs are deposited in the appendix and cause *** present,there are few studies on schistosomal *** To explore the differences in epidemiological,clinical and pathological characteristics between schistosomal appendicitis and non-schistosomal appendicitis over the past decade in order to assess the impact of schistosomiasis on *** The differences of general data,clinical data and laboratory examination data of patients with appendicitis from October 2013 to October 2023 were retrospectively *** patients were divided into two groups for *** were 136 patients in schistosomal appendicitis group and 5418 patients in non-schistosomal appendicitis *** Schistosomal appendicitis accounted for 2.45%of all patients with appendicitis,and the annual proportion in the past decade was 2.2%,2.9%,1.8%,1.9%,3.4%,3.1%,1.9%,1.6%,3%,2.6%,*** prevalence of schistosomal appendicitis was middle-aged and elderly males,with an average age of 61.73±15.335 *** main population of non-schistosomal appendicitis was middle-aged men,with an average age of 35.8±24.013 years(P<0.001).The distribution of pathological types of appendicitis was different between the two groups(P<0.001).The incidence of acute suppurative appendicitis in non-schistosomal appendicitis was higher than that in schistosomal appendicitis[odds ratio(OR)=0.504;95%confidence interval(CI):0.349-0.728;P<0.001].The proportion of acute attack of chronic appendicitis in schistosomal appendicitis was higher than that in non-schistosomal appendicitis(OR=2.614;95%CI:1.815-3.763;P<0.001).The proportion of schistosomal appendicitis patients complicated with colorectal cancer was higher than that of nonschistosomal appendicitis patients(OR=5.087;95%CI:1.427-

关键词： Schistosomal appendicitis Schistosomiasis Appendix Colorectal cancer Clinicopathological characteristics

Alternate row mulching optimizes soil temperature and water conditions and improves wheat yield in dryland farming

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Journal of Integrative Agriculture 2018年第11期17卷 2558-2569页

作者： YAN Qiu-yan DONG Fei LOU ge YANG feng LU Jin-xiu LI feng ZHANG Jian-cheng LI Jun-hui DUAN Zeng-qiang Institute of Wheat Research Shanxi Academy of Agricultural Sciences Department of Earth and Environmental Engineering Columbia University Department of Earth System Science University of California State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences

Straw mulching allows for effective water storage in dryland wheat production. Finding a suitable straw mulching model that facilitates wheat growth was the objective of this study. A 2-year field experiment was conducted to investigate the effects of two straw mulching patterns （FM, full coverage within all the rows; HM, half coverage within alternate rows） and two mulching rates （4.5 and 9.0 t ha^-1） on soil moisture, soil temperature, grain yield, and water use efficiency （WUE） of winter wheat in northern China, with no mulching （M0） as the control. Results showed that mulching increased the soil water storage in all growth stages under high mulching rates, with a stronger effect in later growth stages. Water storage under the HM model was greater in later stages than under the FM model. Soil water content of HM groups was higher than that of FM groups, especially in surface soil layers. Evapotranspiration decreased in mulched groups and was higher under high mulching rates. Aboveground biomass during each growth stage under the HM model was higher than that under M0 and FM models with the same mulched rate, leading to a relatively higher grain yield under the HM model. Mulching increased WUE, a trend that was more obvious under HM9.0 treatment. Warming effect of soil temperature under the HM pattern persisted longer than under the FM model with the same mulching rates. Accumulated soil temperature under mulched treatments increased, and the period of negative soil temperature decreased by 9-12 days under FM and by 10-20 days under HM. Thus, the HM pattern with 9.0 t ha^-1 mulching rate is beneficial for both soil temperature and water content management and can contribute to high yields and high WUE for wheat production in China.

关键词： mulching pattern winter wheat soil temperature grain yield water use efficiency

Effects of Exogenous Silicon on Photosynthetic Capacity and Antioxidant Enzyme Activities in Chloroplast of Cucumber Seedlings Under Excess Manganese

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Agricultural Sciences in China 2009年第1期8卷 40-50页

作者： feng Jian-peng SHI Qing-hua WANG xiu-feng College of Horticultural Science and Engineering Shandong Agricultural University Tai＇an 271018 P.R.China State Key Laboratory of Crop Biology Tai＇an 271018 P.R.China

Effects of silicon on photosynthetic parameters and antioxidant enzymes of chloroplast in cucumber seedlings under excess Mn were studied. Compared with the control, excess Mn significantly inhibited net photosynthetic rate （Pn）, stomatal conductance, as well as the maximum yield of the photosystem II photochemical reactions （Fv/Fm） and the quantum yield of photosysytem II electron transport （Φ PSII）, application of Si reversed the negative effects of excess Mn. In the further investigation, it was obtained that application of Si significantly increased the activities of enzymes related with ascorbate-glutathione cycle including ascorbate peroxidase （APX）, dehydroascorbate reductase （DHAR） and glutathione reductase （GR） in cucumber chloroplast under excess Mn, this could be responsible for the lower accumulation of H2O2 and lower lipid peroxidation of chloroplast induced by Mn, and resulted in keeping higher photosynthesis.

关键词： cucumber excess manganese photosynthesis chlorophyll fluorescence chloroplast antioxidant enzymes