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Genotype-by-environment interaction for grain yield among novel cowpea(Vigna unguiculata L.) selections derived by gamma irradiation

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The Crop Journal 2018年第3期6卷 306-313页

作者： Lydia Horn Hussein Shimelis Fatma Sarsu Learnmore Mwadzingeni Mark D.Laing African Centre for Crop Improvement University of Kwa Zulu-Natal Directorate of Research and Training Plant Production ResearchMinistry of AgricultureWater and Forestry Plant Breeding and Genetics Section Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture

This study determined the effects of genotype-by-environment(G × E) interaction and stability of yield among elite cowpea(Vigna unguiculata L.) selections derived by gamma irradiation. The study was conducted in Namibia at three selected sites: Bagani, Mannheim,and Omahenene, during 2014/2015 and 2015/2016. Thirty-four newly developed mutant genotypes and three local checks were evaluated using a randomized complete block design with three replications. Grain yield data were analyzed using the additive main effects and multiplicative interaction(AMMI) and the genotype main effect plus genotype-by-environment interaction(GGE) biplot methods. The AMMI and GGE biplot models explained 77.49% and 75.57% of total observed genotypic variation, *** and Omahenene were the environments best discriminating the test genotypes during 2014/2015 and 2015/2016, respectively. Four promising mutant genotypes: G9(Sh L3 P74), G10(Sh R3 P4), G12(Sh R9 P5), and G4(Sh L2 P4), showed wide adaptation and grain yields of 2.83, 2.06, 1.99, and 1.95 t ha^(-1), respectively. The novel mutant lines are useful genetic resources for production or future cowpea breeding programs in Namibia or similar environments.

关键词： AMMI Cowpea Genotype by environment interaction GGE biplot Mutants

Preparation and Characterization of Boron Thin Film on Iron Substrate

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Journal of Materials Science & Technology 2007年第4期23卷 481-486页

作者： Ishrat REHANA D.Muhammad S.Ahmed J.I.Akhter Central Analytical Facility division Pakistan Institute of nuclear Science and Technology NiloreIslamabadPakistan Physics Radiation division Pakistan Institute of nuclear Science and Technology NiloreIslamabadPakistan

The adherent thermal layering was undertaken by chemical vapor deposition （CVD） method using saturated solution of boric acid in ultra pure CH3OH. The influence of temperature was studied by varying temperature from 100 to 600℃ during the process of boron deposition. The most optimum temperature was found to be 200℃. The effect of time span was observed from 6 to 120 h. The generation of micro or nano-scale thickness could be achieved by reducing time span of the experiment. The behavior of CVD was characterized by using scanning electron microscope, absorbance spectrohotometer and atomic emission spectrograph.

关键词： Boron Chemical vapor deposition (CVD) Scanning electron microscopy (SEM) Atomic emission spectrograph (AES) Absorbance spectrophotometer Thin film

Characterization of crud deposited on fuel rods under HWC environment in Kuosheng nuclear Power Plant

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nuclear Science and Techniques 2016年第1期27卷 141-148页

作者： tsuey-lin tsai te-yen su tsung-yuan wang tsen-yu yang Chemistry division Institute of Nuclear Energy ResearchLongtanTaoyuanTaiwanChina

Under normal water chemistry conditions, the oxygen and hydrogen peroxide produced by water radiolysis in the coolant of boiling water reactors(BWRs) can lead to intergranular stress corrosion cracking in the constituent materials of plant components. This fact has led to the wide-scale adoption of hydrogen water chemistry(HWC) in the nuclear industry to counteract these *** study seeks to characterize the metallic composition and the surface properties of the constituent materials of plant components in order to determine their effects on the accumulation of chalk river unidentified deposits(crud) on fuel rods in the BWR Unit-1 of the Kuosheng nuclear Power Plant in Taiwan. Inductively coupled plasma-atomic emission spectroscopy was used to calculate the concentrations of surface crud and gamma spectrometry was used to determine the radioactivity of the corrosion products, as well as their axial distribution across the surface of the fuel rods. X-ray diffraction analysis and scanning electron microscopy/energy-dispersive X-ray spectroscopy were used to identify the crystalline phase and morphology of the crud as irregular shapes and flakes. The amount of crud deposited during the fourth fuel cycle exceeded that of the third fuel cycle due to extended burn-up time. Our analytical results indicate that the implementation of HWC had no significant effect on the characteristics of subsequent crud.

关键词：燃料棒核电站电感耦合等离子体原子发射光谱法表征沉积 X射线衍射分析反应堆冷却剂系统扫描电子显微镜

CONTROL OF POTATO TUBERWORM IN STORAGE WITH STERILE INSECT TECHNIQUE

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CONTROL OF POTATO TUBERWORM IN STORAGE WITH STERILE INSECT T...

Use of geochemical fingerprints to trace sediment sources in an agricultural catchment of Argentina

The ⅩⅤth International Plant Protection Congress

作者： T.K.DONGRE H.D.RANANAVARE nuclear agriculture and biotechnology division Bhabha Atomic Research Centre Trombay Mumbai 400085 India nuclear agriculture and biotechnology division Bhabha Atomic Research Centre Trombay Mumbai 400085 India

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International Soil and Water Conservation Research 2020年第4期8卷 410-417页

作者： Romina Torres Astorga Yanina Garcias Gisela Borgatello Hugo Velasco Román Padilla Gerd Dercon Lionel Mabit IMASL UNSLCONICET.Ejde los Andes 950San LuisArgentina nuclear Science and Instrumentation Laboratory Division of Physical and Chemical SciencesIAEASeibersdorfAustria Soil and Water Management&Crop Nutrition Laboratory Joint FAO/IAEA Division of Nuclear Techniques in Food and AgricultureSeibersdorfAustria

Soil erosion and associated sediment redistribution are key environmental problems in Central *** land uses and management practices,such as intensive grazing and crop cultivation,are considered to be significantly driving and accelerating these *** research focuses on the identification of suitable soil tracers from hot spots of land degradation and sediment fate in an agricultural catchment of central Argentina with erodible loess *** Energy Dispersive X-Ray Fluorescence(EDXRF),elemental concentrations were determined and later used as soil tracers for geochemical *** best set of tracers were identified using two artificial mixtures composed of known proportions of soil sources collected from different lands having contrasting soil ***,calcium,iron,phosphorus,and titanium were identified for obtaining the best suitable reconstruction of source proportions in the laboratory-prepared artificial ***,these elements,as well as the total organic carbon,were applied for pinpointing critical hot spots of erosion within the studied *** were identified to be the main source of sediments,river banks and dirt roads together are the second most important *** investigation provides key information for optimizing soil conservation strategies and selecting land management practices and land uses which do not generate great contribution of sediment,preventing pollution of the waterways of the region.

关键词： Fingerprinting Geochemical elements Energy dispersive X-ray fluorescence Soil erosion Mixing models

Biotechnological interventions for the sustainable management of a global pest,whitefly(Bemisia tabaci)

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Insect Science 2021年第5期28卷 1228-1252页

作者： Archna Suhag Honey Yadav Darshna Chaudhary S.Subramanian Ranjana Jaiwal Pawan K.Jaiwal Department of Zoology M.D.UniversityRohtakIndia Centre for biotechnology M.D.UniversityRohtakIndia division of Entomology Indian Agriculture Research InstituteNew DelhiIndia

Whiteflies(Bemisia tabaci)are polyphagous invasive hemipteran insects that cause serious losses of important crops by directly feeding on phloem sap and transmitting pathogenic *** insects have emerged as a major threat to global agriculture and food *** synthesized insecticides are currently the only option to control whiteflies,but the ability of whiteflies to evolve resistance against insecticides has made the management of these insects very *** host-plant resistance against whiteflies identified in some crop plants has not been exploited to a great *** engineering approaches,such as transgenics and RNA interference(RNAi),are potentially useful for the control of *** plants harboring insecticidal toxins/lectins developed via nuclear or chloroplast transformation are a promising vehicle for whitefly ***-stranded RNAs(dsRNAs)of several insect genes,delivered either through microinjection into the insect body cavity or orally via an artificial diet and transiently or stably expressed in transgenic plants,have controlled whiteflies in model plants and in some crops at the laboratory level,but not at the field *** this review,we highlight the merits and demerits of each delivery method along with strategies for sustained delivery of dsRNAs via fungal entomopathogen/endosymbiont or nontransgenic RNAi approaches,foliar sprays,root absorption or nanocarriers as well as the factors affecting efficient RNAi and their biosafety *** sequencing and transcriptome studies of whitefly species are facilitating the selection of appropriate genes for RNAi and gene-editing technology for the efficient and resilient management of whiteflies and their transmitted viruses.

关键词： Bemisia tabaci.,gene editing management nanotechnology RNAi transgenesis

A modified theta projection model for creep behavior of RPV steel 16MND5

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Journal of Materials Science & Technology 2020年第12期47卷 231-242页

作者： Peng Yu Weimin Ma division of nuclear Power Safety Royal Institute of Technology(KTH)Stockholm 10691Sweden

During a hypothetical severe accident of light water reactors,the reactor pressure vessel(RPV) could fail due to its creep under the influence of high-temperature ***,modelling of creep behavior of the RPV is paramount to reactor safety analysis since it predicts the transition point of accident progression from in-vessel to ex-vessel *** the present study we proposed a new creep model for the classical French RPV steel 16 MND5,which is adapted from the "theta-projection model" and contains all three stages of a creep *** curves are expressed as a function of time with five model parameters θ_i(i=1-4 and m).A model parameter dataset was constructed by fitting experimental creep curves into this *** correlate the creep curves for different temperatures and stress loads,we directly interpolate the model’s parameters θ_i(i=1-4 and m) from this dataset,in contrast to the conventional "theta-projection model" which employs an extra single correlation for each θ_i(i=1-4 andm),to better accommodate all experimental curves over the wide ranges of temperature and stress *** also put a constraint on the trend of the creep strain that it would monotonically increase with temperature and stress load.A good agreement was achieved between each experimental creep curve and corresponding model’s *** widely used time-hardening and strain-hardening models were performing reasonably well in the new method.

关键词： 16MND5 steel Creep modelling Tertiary stage Reactor pressure vessel Theta projection model

Natural product-based radiopharmaceuticals:Focus on curcumin and its analogs,flavonoids,and marine peptides

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Journal of Pharmaceutical Analysis 2022年第3期12卷 380-393页

作者： Hendris Wongso Labeled Compound and Radiometry division Center for Applied Nuclear Science and TechnologyNational Nuclear Energy AgencyBandung40132Indonesia

Natural products provide a bountiful supply of pharmacologically relevant precursors for the development of various drug-related molecules,including ***,current knowledge regarding the importance of natural products in developing new radiopharmaceuticals remains *** date,several radionuclides,including gallium-68,technetium-99m,fluorine-18,iodine-131,and iodine-125,have been extensively studied for the synthesis of diagnostic and therapeutic *** availability of various radiolabeling methods allows the incorporation of these radionuclides into bioactive molecules in a practical and efficient *** the radiolabeling methods,direct radioiodination,radiometal complexation,and halogenation are generally suitable for natural products owing to their simplicity and *** review highlights the pharmacological benefits of curcumin and its analogs,flavonoids,and marine peptides in treating human pathologies and provides a perspective on the potential use of these bioactive compounds as molecular templates for the design and development of new ***,this review provides insights into the current strategies for labeling natural products with various radionuclides using either direct or indirect methods.

关键词： Natural products Radiopharmaceuticals Radiolabeling Curcumin Flavonoids Marine peptides

Positron Spectroscopy of Free Volume in Poly(vinylidene fluoride) after Helium Ions Irradiation

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Chinese Journal of Polymer Science 2019年第5期37卷 527-534页

作者： Jin-Zhe Lyu Roman Laptev Natalya Dubrova division for Experimental Physics School of Nuclear Science & EngineeringNational Research Tomsk Polytechnic University

Free volume is an extremely important intrinsic defect in polymers. Structurally, free volume is the randomly distributed holes in the polymer molecular chain segments. In proton exchange membrane fuel cells, free volume is also the space needed for the directional conduction of protons. Irradiation by α particles to grafting sulfonated poly(vinylidene fluoride)(PVDF) is one of the methods to produce proton exchange membrane with good proton channel rate. Positron annihilation lifetime spectroscopy was used to study the free volume size at different absorbed dose levels from 0.13 MGy to 0.65 MGy. Measurement method of positron annihilation lifetime spectroscopy for PVDF based on ^(44) Ti positron source was developed. For low dose irradiation at 0.26 MGy, a decrease in free volume and practically unchanged crystallinity were observed. Further increase of absorbed dose range from 0.26 MGy to 0.39 MGy led to an increasing crystallinity with the same free volume level. For the absorbed dose from 0.39 MGy to 0.65 MGy, crystallinity was decreased but free volume remained almost constant.

关键词： Positron annihilation Free volume XRD Poly(vinylidene fluoride) Helium ions Connection Degradation