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Insecticidal activities of garlic substances against adults of grain moth, Sitotroga cerealella （Lepidoptera： Gelechiidae）

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Insect Science 2012年第2期19卷 205-212页

作者： feng-lian yang Fen Zhu Chao-liang Lei Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory Huazhong Agricultural UniversityWuhanChina

The angoumois grain moth, Sitotroga cerealella （Olivier）, is one of the most serious stored grain pests around the world. In attempts to reduce the losses caused by the moth and to suppress its populations, the fumigant activities, behavioral influence and ovipositional inhibition of garlic （Allium sativum） essential oil and its two major components, diallyl disulfide and diallyl trisulfide, were investigated against the adult grain moth. Their effects on reduction in survival of first instar larvae to adult emergence were also evaluated. Results showed that these three materials （garlic essential oil, diallyl disulfide and diallyl trisulfide） had significant fumigant activity with 50% lethal concentration values at 1.33, 0.99, and 1.02/zL/L air space, respectively; meanwhile, the three materials possessed high behavioral deterrent activities against adults in the Y-tube olfactometer. When applied to rice grains, these materials reduced adult longevity and inhibited oviposition, with ovipositional inhibition above 70% at a concentration of 1.5uL/25 g in either no-choice or two-choice tests. In short, the study showed that both diallyl disulfide and diallyl trisulfide, like garlic essential oil, acted as fitrnigants, produced behavioral deter- rence and inhibited oviposition against angoumois grain moth. Our work here indicates that diallyl disulfide and diallyl trisulfide may serve as potential alternatives for grain protectants since both of them can be prepared easily from readily available chemicals.

关键词： behavioral deterrence essential oil fumigant garlic oviposition inhibition,Sitotroga cerealella

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奶牛小肠蛋白质体系的局限性与氨基酸平衡

动物营养学报 2006年第2期18卷 63-68页

作者：冯仰廉中国农业大学动物科技学院北京100094

现在国内外已将奶牛的可消化粗蛋白体系改进为小肠可消化蛋白质体系，但由于小肠蛋白质的氨基酸组成变异性很大，其CV高达5．6％～19．2％，因而导致可代谢蛋白质的转化效率不稳定，表观效率便会掩盖实际需要。奶牛的第一和第二限制性... 详细信息

现在国内外已将奶牛的可消化粗蛋白体系改进为小肠可消化蛋白质体系，但由于小肠蛋白质的氨基酸组成变异性很大，其CV高达5．6％～19．2％，因而导致可代谢蛋白质的转化效率不稳定，表观效率便会掩盖实际需要。奶牛的第一和第二限制性氨基酸分别为赖氨酸和蛋氨酸，较多研究认为组氨酸为第三限制性氨基酸，但当肝后部提供的组氨酸不能满足产奶需要时，组氨酸可来自体储存的分解，因此尚不能完全确定。据对87个试验结果的统计分析表明，在瘤胃后供给额外的赖氨酸和蛋氨酸，则奶牛的产奶量、乳蛋白量、乳蛋白率均明显增加；对48个试验结果的统计分析结果表明，在可代谢蛋白质被满足供应的基础上，当赖氨酸和蛋氨酸分别达到7．08％和2．35％时，乳蛋白质产量达到最高点。法国INRA在其试验的基础上，确定小肠可消化真蛋白质中的赖氨酸和蛋氨酸的适宜含量为7．3％和2．5％，由于我国现行的是小肠可消化粗蛋白质体系，故建议其赖氨酸和蛋氨酸的含量为6．0％和1．9％，但须评定瘤胃微牛物蛋白质和饲料非降解蛋白质的赖氡酸和蛋氡酸含量，并调帮日粮使其达到平衡。

关键词：奶牛小肠蛋白质氨基酸平衡

不同能量水平日粮对肉牛瘤胃微生物氨基酸组成的影响

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中国畜牧杂志 2000年第4期36卷 3-5页

作者：周勃冯仰廉中国农业大学动物科技学院北京100094

:选用 1 2头杂种黄牛研究了不同能量水平 ( 5 2 0、6 2 7、7 87MJ/kg)的日粮对存在于瘤胃液中的微生物 (liquid associatedmicroorganisms,LAM)和在瘤胃中与饲料颗粒紧密结合的微生物 (solid associatedmi croorganisms,SAM)的氨基酸组... 详细信息

:选用 1 2头杂种黄牛研究了不同能量水平 ( 5 2 0、6 2 7、7 87MJ/kg)的日粮对存在于瘤胃液中的微生物 (liquid associatedmicroorganisms,LAM)和在瘤胃中与饲料颗粒紧密结合的微生物 (solid associatedmi croorganisms,SAM)的氨基酸组成的影响。日粮由玉米、棉籽饼和玉米秸秆组成。结果表明 :能量水平对LAM中的Leu(P <0 0 0 1 )、Phe(P <0 0 1 )、Lys(P <0 0 0 1 )、His(P <0 0 0 1 )、Arg(P <0 0 0 1 )、Asp(P <0 0 0 1 )和Gly(P <0 0 0 1 )等 7种氨基酸的含量影响显著 ;对SAM中的Thr(P <0 0 5)、Val(P <0 0 5)、Lys(P <0 0 5)和Met(P <0 0 5)等 4种氨基酸的含量影响显著。不同组分的瘤胃微生物中 ,有 6种氨基酸的组成显著不同。在LAM中Glu(P <0 0 5)、Ala(P <0 0 0 1 )和Cys(P <0 0 0 1 )的含量明显高于在SAM中的含量而Leu(P <0 0 5)、His(P <0 0 1 )和Pro(P <0 0 0 1 )的含量则相反。另外His(P <0 0 5)、Arg(P <0 0 1 )、和Asp(P <0 0 1 )等 3种氨基酸在LAM和SAM中的相对组成受日粮能量水平的影响。结论 :不同组分瘤胃微生物的氨基酸组成有所差异。

关键词：肉牛日粮能量水平瘤胃微生物氨基酸组成

Distribution and mapping of temperate savanna in the sandy lands of eastern China

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Science China Earth Sciences 2025年第1期68卷 128-141页

作者： Xiaoya LI feng WANG Tao DUAN Kaijie yang Bin yang Chunmei WANG Xin TIAN Qi LU Institute of Ecological Conservation and Restoration Institute of Desertification Studies Chinese Academy of Forestry Institute of Desertification Institute of Desertification Studies Chinese Academy of Forestry Institute of Great Green Wall Satellite Application Centre for Ecology and Environment MEE Institute of Microelectronics Chinese Academy of Sciences Aerospace Information Research Institute Chinese Academy of Sciences Institute of Forest Resource Information Techniques Chinese Academy of Forestry

Savannas are distributed globally across various *** perform a significant socioeconomic role in regulating net primary productivity and the terrestrial carbon *** to the high spatial heterogeneity induced by the mixed distribution of trees and grasses,current global land-cover classification maps often classify savannas as forests or grasslands Temperate savannas in China cover a vast area,yet their spatial patterns and extent remain poorly *** study developed a novel remote sensing temperate savannas mapping method by integrating very high-resolution （VHR） unmanned aerial vehicle （UAV） and GF-6 satellite imagery based on the vegetation structure characteristics of temperate savannas using the FAO definition of *** and validation datasets were collected from VHR UAV imagery covering the main temperate savannah types with a ground area of 1818 *** fractional woody vegetation cover （FWVC） and fractional herbaceous vegetation cover （FHVC） in temperate savannas were estimated by integrating Classification and Regression Tree and Random Forest *** current distribution of temperate savannas in the Horqin and Otindag Sandy Lands of Eastern China was mapped to a unit area of 0.5 *** root-mean-square error （RMSE） values for the FWVC and FHVC models were 10.69% and 11.67%,and the R2values were 0.66 and 0.63,*** assessment indicated that the new temperate savanna map had high identification accuracy,with a Kappa coefficient of 0.70,overall accuracy of 0.88,and average accuracy of *** savannas in the sandy lands of eastern China were primarily distributed in the northern Horqin Sandy Land the central and eastern regions of the Otindag Sandy Land,and the transition zone from the southern slopes of the Greater Khingan Mountains to the plains,covering a total area of 3.27×10～6 *** main savannah types were elm,oak/maple,and shrub *** savannas were widely distributed in the Otindag Sandy

关键词： Temperate savanna UAV imagery GF-6 Fractional woody vegetation cover Fractional herbaceous vegetation cover Machine learning

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Effect of Progressive Substitution of Cement and Lime by Powdered Shells Used as a Curing Agent for Dredged Soil in a Port Area

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 88-102页

作者： SUN yang WANG Faxin SU Yaying LI Yiwei HE feng College of Harbour Coastal and Offshore EngineeringHohai UniversityNanjing 210098China Huai'an Research Institute Hohai UniversityHuai'an 223025China Jiangsu Fangyang Industrial Investment Corp.Ltd. Lianyungang 210098China

This study aimed to address the challenges of solid waste utilization,cost reduction,and carbon reduction in the treatment of deep-dredged soil at Xuwei Port in lianyungang city of *** research in this area was ***,a curing agent made from powdered shells was used to solidify the dredged soil in *** employed laboratory orthogonal tests to investigate the physical and mechanical properties of the powdered shell-based curing *** was collected by conducting experiments to assess the role of powdered shells in the curing process and to determine the optimal ratios of powdered shells to solidified soil for different *** development of strength in solidified soil was studied in both seawater and pure water *** study revealed that the strength of the solidified soil was influenced by the substitution rate of powdered shells and their interaction with *** cement content had a positive effect on *** high-strength solidified soil,the recommended ratio of wet soil:cement:lime:powdered shells were 100:16:4:4,while for low-strength solidified soil,the recommended ratio was 100:5.4:2.4:***,under appropriate conditions,improved short-term strength by promoting the formation of expansive ettringite minerals that contributed to cementation and *** findings suggest that the combination of cement and powdered shells is synergistic,positively affecting the strength of solidified *** recommended ratios provide practical guidance for achieving desired strength levels while considering factors such as cost and carbon *** role of seawater in enhancing short-term strength through crystal formation is noteworthy and can be advantageous for certain *** conclusion,this research demonstrates the potential of using a powdered shell-based curing agent for solidifying dredged soil in an environmentally friendly and cost-effective *** recommended ratios for different str

关键词： carbon reduction and solidification dredged soil abandoned shells orthogonal test chemical additives(lime and cement) unconfined compressive strength(UCS)

用绵羊小肠液冻干粉评定瘤胃非降解精饲料残渣的有机物于小肠消化率方法的研究

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中国畜牧杂志 2000年第3期36卷 17-19页

作者：史清河冯仰廉中国农业大学动物科技学院北京100094

本试验旨在筛选用绵羊小肠液冻干粉评定瘤胃非降解精饲料残渣的有机物于小肠消化率的最佳培养条件。试验包括三部分 :第一个试验研究了小肠液冻干粉用量 ( 0 .2、0 .3、0 .4与 0 .5g)与缓冲液种类(McDougall缓冲液与磷酸盐缓冲液 )对 1... 详细信息

本试验旨在筛选用绵羊小肠液冻干粉评定瘤胃非降解精饲料残渣的有机物于小肠消化率的最佳培养条件。试验包括三部分 :第一个试验研究了小肠液冻干粉用量 ( 0 .2、0 .3、0 .4与 0 .5g)与缓冲液种类(McDougall缓冲液与磷酸盐缓冲液 )对 1 2h瘤胃非降解玉米与豆粕的有机物于小肠消化率的影响 ;第二个试验研究了缓冲液pH值 ( 7.0、7.5与 8.0 )与Ca2 + 浓度 ( 3 4 0、680与 2 0 0 0 μmol/L)对 1 2h瘤胃非降解玉米与豆粕的有机物于小肠消化率的影响 ;第三个试验研究了离体培养时间 ( 3、6、9、1 2、1 5、1 8、2 1与 2 4h)对1 2h瘤胃非降解玉米与豆粕的有机物于小肠消化率的影响。筛选的用绵羊小肠液冻干粉评定瘤胃非降解精饲料残渣的有机物于小肠消化率的适宜条件为 :0 .4 5g小肠液冻干粉 / 0 .56g饲料 ,McDougall缓冲液 ,pH =7.5,Ca2 + =680 μmol/L ,3 9℃ ,瘤胃非降解玉米与豆粕的最佳培养时间不同 ,分别为 1 2与 1

关键词：绵羊小肠液冻干粉非降解饲料残渣小肠消化率

Interaction of major facilitator superfamily domain containing 2A with the blood-brain barrier

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Neural Regeneration Research 2025年第8期20卷 2133-2152页

作者： Yilun Ma Taiwei Dong Fei Luan Juanjuan yang feng Miao Peifeng Wei College of Pharmacy and First Clinical Medical College Shaanxi University of Chinese MedicineXianyangShaanxi ProvinceChina National Drug Clinical Trial Agency The Second Affiliated Hospital of Shaanxi University of Chinese Medicine/Xixian New District Central HospitalXi′anShaanxi ProvinceChina

The functional and structural integrity of the blood-brain barrier is crucial in maintaining homeostasis in the brain microenvironment;however,the molecular mechanisms underlying the formation and function of the blood-brain barrier remain poorly *** major facilitator superfamily domain containing 2A has been identified as a key regulator of blood-brain barrier *** plays a critical role in promoting and maintaining the formation and functional stability of the blood-brain barrier,in addition to the transport of lipids,such as docosahexaenoic acid,across the blood-brain ***,an increasing number of studies have suggested that major facilitator superfamily domain containing 2A is involved in the molecular mechanisms of blood-brain barrier dysfunction in a variety of neurological diseases;however,little is known regarding the mechanisms by which major facilitator superfamily domain containing 2A affects the blood-brain *** paper provides a comprehensive and systematic review of the close relationship between major facilitator superfamily domain containing 2A proteins and the blood-brain barrier,including their basic structures and functions,cross-linking between major facilitator superfamily domain containing 2A and the blood-brain barrier,and the in-depth studies on lipid transport and the regulation of blood-brain barrier *** comprehensive systematic review contributes to an in-depth understanding of the important role of major facilitator superfamily domain containing 2A proteins in maintaining the structure and function of the blood-brain barrier and the research progress to *** will not only help to elucidate the pathogenesis of neurological diseases,improve the accuracy of laboratory diagnosis,and optimize clinical treatment strategies,but it may also play an important role in prognostic *** addition,the effects of major facilitator superfamily domain containing 2A on blood-brain barrier lea

关键词： blood-brain barrier(BBB) caveolin-1 central nervous system docosahexaenoic acid endothelial cells lysophosphatidylcholine major facilitator superfamily domain containing 2A(MFSD2A) transcytosis

Effect of order–disorder transition on thermodynamic and electronic properties of σ and χ phases in W–Re alloy: the first-principles calculation

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Tungsten 2025年第1期7卷 195-213页

作者： Zhi-Peng Zhu Dian Jia William Yi Wang Jun-Lei Yin Xing-Yu Gao Shu-feng yang Hai-feng Song Jin-Shan Li State Key Laboratory of Solidification Processing Northwestern Polytechnical University Laboratory of Computational Physics Institute of Applied Physics and Computational Mathematics School of Metallurgical and Ecological Engineering University of Science and Technology Beijing

The Tungsten-Rhenium(W-Re) alloys,celebrated for their high melting point,strength at elevated temperatures,electrical resistivity,and radiation resistance,have been widely utilized in high-temperature components,aerospace,electronics,and nuclear *** constituents of the topologically close-packed(TCP) phases,the sigma phase(σ) and chi phase(χ) formed within W-Re alloys wield considerable influence on the mechanical properties and the stability of the *** calculations were utilized in the present work to explore the structural,thermodynamic,and electronic properties of both ordered and disordered configurations within the σ and χ phases,culminating in a systematic elucidation of the higher phase stability exhibited by the ordered *** is found that the bulk modulus of these two phases is directly proportional to the concentration of Re in the alloy,while the equilibrium volume is inversely *** thermodynamic parameters of the σ and χ phases are calculated via the mean-field potential *** similar trends observed in the isobaric heat capacity,enthalpy increment,and entropy change curves for these two phases suggest they possess comparable thermodynamic *** is noteworthy that the contribution of ionic vibrations predominantly affects the isobaric heat capacity,while the contribution of thermal electronic excitations increases linearly with *** the structure and thermodynamic properties of TCP phases in W-Re alloys at low temperatures has profound significance for optimizing material performance,microstructures features,establishing theoretical foundations,and predicting material behavior.

关键词： First-principles calculations Phase stability TCP phases Thermodynamic properties W–Re alloy

早发型与晚发型新生儿败血症临床特点及病原学比较

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中国消毒学杂志 2017年第7期34卷 657-659,663页

作者：侯齐书叶继锋杨莲华温州医科大学附属第二医院、育英儿童医院浙江温州325000

目的研究早发型和晚发型新生儿败血症临床特点、病原菌分布及菌株耐药状况。方法对2015年1-12月收治的83例早发型与晚发型新生儿败血症病例的临床和病原学资料进行回顾性分析。结果晚发型患儿常为足月儿,早发型常为早产或低出生体重儿;... 详细信息

目的研究早发型和晚发型新生儿败血症临床特点、病原菌分布及菌株耐药状况。方法对2015年1-12月收治的83例早发型与晚发型新生儿败血症病例的临床和病原学资料进行回顾性分析。结果晚发型患儿常为足月儿,早发型常为早产或低出生体重儿;早发型患儿反应低下、硬肿、喂养困难发生率明显高于晚发型;晚发型组肺炎和化脓性脑膜炎发生率高于早发型组;早发型败血症病原以肺炎克雷伯菌、大肠埃希菌主,晚发型败血症病原以凝固酶阴性葡萄球菌为主。结论应根据早发型和晚发型新生儿败血症在临床特点及病原分布差异指导临床诊断和治疗。

关键词：新生儿早发型晚发型败血症