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Enhanced ion acceleration from transparency-driven foils demonstrated at two ultraintense laser facilities

Light(Science & Applications) 2023年第4期12卷 593-604页

作者： Nicholas P.Dover Tim Ziegler Stefan Assenbaum Constantin Bernert Stefan Bock Florian-Emanuel Brack Thomas E.Cowan emma j.ditter Marco Garten Lennart Gaus Ilja Goethel George S.Hicks Hiromitsu Kiriyama Thomas Kluge james K.Koga Akira Kon Kotaro Kondo Stephan Kraft Florian Kroll Hazel F.Lowe josefine Metzkes-Ng Tatsuhiko Miyatake Zulfikar Najmudin Thomas Püschel Martin Rehwald Marvin Reimold Hironao Sakaki Hans-Peter Schlenvoigt Keiichiro Shiokawa Marvin E.P.Umlandt Ulrich Schramm Karl Zeil Mamiko Nishiuchi Kansai Photon Science Institute National Institutes for Quantum Science and Technology8-1-7 UmemidaiKizugawaKyoto 619-0215Japan The john Adams Institute for Accelerator Science Blackett LaboratoryImperial College LondonLondon SW72AZUnited Kingdom Helmholtz-Zentrum Dresden-Rossendorf 01328 DresdenGermany Technische Universitat Dresden 01069 DresdenGermany Interdiscipllinary Graduate School of Engineering Sciences Kyushu University6-1Kasuga-KoenKasugaFukuoka 816-8580Japan

Laser-driven ion sources are a rapidly developing technology producing high energy,high peak current *** suitability for applications,such as compact medical accelerators,motivates development of robust acceleration schemes using widely available repetitive ultraintense femtosecond *** applications not only require high beam energy,but also place demanding requirements on the source stability and *** can be seriously affected by the laser temporal contrast,precluding the replication of ion acceleration performance on independent laser systems with otherwise similar ***,we present the experimental generation of>60 MeV protons and>30 MeV u-1 carbon ions from sub-micrometre thickness Formvar foils irradiated with laser intensities>1021 *** are accelerated by an extreme localised space charge field≥30TVm-1,over a million times higher than used in conventional *** field is formed by a rapid expulsion of electrons from the target bulk due to relativistically induced transparency,in which relativistic corrections to the refractive index enables laser transmission through normally opaque *** replicate the mechanism on two different laser facilities and show that the optimum target thickness decreases with improved laser contrast due to reduced *** demonstration that energetic ions can be accelerated by this mechanism at different contrast levels relaxes laser requirements and indicates interaction parameters for realising application-specific beam delivery.

关键词： acceleration intense transparency

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Improving effectiveness of protection efforts in tiger source sites:Developing a framework for law enforcement monitoring using MIST

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Integrative Zoology 2010年第4期5卷 363-377页

作者： emma j.STOKES Wildlife Conservation Society Global Conservation ProgramBronxNew YorkUSA

Wild tigers are in a critical state with an estimated population decline of more than 95%over the past *** the capacity and effectiveness of law enforcement in reducing poaching of tigers is an immediate priority to secure remaining wild populations in source *** 2008-2010,standardized patrol-based law enforcement monitoring(LEM)was established under the Tigers Forever Program across 8 key tiger sites in order to improve and evaluate law enforcement ***-based monitoring has the distinct advantage of providing regular and rapid information on illegal activities and ranger performance,although,until recently,it has received relatively little scrutiny from the conservation *** present paper outlines a framework for implementation of LEM in tiger source sites using MIST,a computerized management information system for ranger-based data *** framework addresses many of the technical,practical and institutional challenges involved in the design,implementation,sustainability and evaluation of *** of such a framework for LEM is a cost-effective strategy to improve the efficiency of law enforcement efforts,to increase the motivation of enforcement staff and to promote the accountability of law enforcement agencies in addressing threats to *** combined with independent,systematic and science-based monitoring of tigers and their prey,LEM has great potential for evaluating the effectiveness of protection-based conservation investments.

关键词： law enforcement monitoring MIST protected areas protection tigers

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Enabling Technologies for Autonomous Robotic Systems in Manufacturing

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Transactions of Nanjing University of Aeronautics and Astronautics 2024年第4期41卷 403-431页

作者： ERDŐS Gábor ABAI Kristóf BEREGI Richárd CSEMPESZ jános CSERTEG Tamás GODÓGábor HAjÓS Mátyás HÁY Borbála HORVÁTH Dániel HORVÁTH Gergely jUNIKIÁdám KEMÉNY Zsolt KOVÁCS András NACSA jános PANITI Imre PEDONE Gianfranco TAKÁCS emma TIPARY Bence ZAHORÁN László VÁNCZA józsef Institute for Computer Science and Control Hungarian Research Network(HUN-REN SZTAKI)BudapestHungary Department of Manufacturing Science and Technology Budapest University of Technology and Economics(BME)BudapestHungary EPIC InnoLabs Nonprofit Ltd. BudapestHungary Eötvös Loránd University(ELTE) BudapestHungary

Research of autonomous manufacturing systems is motivated both by the new technical possibilities of cyber-physical systems and by the practical needs of the *** operation in semi-structured industrial environments can now be supported by advanced sensor technologies,digital twins,artificial intelligence and novel communication *** enable real-time monitoring of production processes,situation recognition and prediction,automated and adaptive(re)planning,teamwork and performance improvement by *** paper summarizes the main requirements towards autonomous industrial robotics and suggests a generic workflow for realizing such *** case studies will be presented from recent practice at HUN-REN SZTAKI in a broad range of domains such as assembly,welding,grinding,picking and placing,and *** various solutions have in common that they use a generic digital twin concept as their *** making general recommendations for realizing autonomous robotic solutions in the industry,open issues for future research will be discussed.

关键词： industrial robotics autonomy digital twin enabling technology

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Associations between maternal vitamin D status and porcine litter characteristics throughout gestation

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journal of Animal Science and Biotechnology 2023年第2期14卷 806-813页

作者： Claire Stenhouse emma Hurst Richard j.Mellanby Cheryl j.Ashworth Functional Genetics and Development Division The Roslin Institute and Royal(Dick)School of Veterinary StudiesUniversity of EdinburghMidlothian EH259RGUK Current Affiliation Department of Animal ScienceTexas A&M UniversityCollege StationTexas 77843‑2471USA Clinical Sciences Division The Roslin Institute and Royal(Dick)School of Veterinary StudiesUniversity of EdinburghMidlothian EH259RGUK.

Emerging evidence suggests an important role of vitamin D in the establishment and maintenance of pregnancy,and the regulation of foetal growth across mammalian ***,the temporal changes in maternal vitamin D sta-tus throughout gestation in the pig and the relationship between maternal vitamin D status and litter characteristics of interest across gestation remain poorly understood and *** abundance of 25(OH)D in maternal plasma was quantified by HPLC–MS/MS at gestational days(GD)18,30,45,60 and 90(n=5–11 gilts/GD).Maternal plasma 25(OH)D concentrations significantly increased between GD18 and GD30(P<0.05).The relationship between maternal vitamin D metabolite concentrations and litter characteristics of interest including gilt weight,ovulation rate,mean litter weight,number of live foetuses,percentage prenatal survival,and sex ratio of the litter was *** 25(OH)D(P=0.059)concentrations tended to be positively associated with percentage prenatal survival on *** GD90,maternal 25(OH)D(P<0.05)concentrations were inversely associated with gilt *** plasma 25(OH)D concentrations were inversely associated with the percentage of male foetuses in the litter on GD90(P<0.05).This study has provided novel insights into temporal changes in maternal vitamin D status throughout ges-tation and the relationship between maternal vitamin D status and the economically important litter characteristics of gilt weight,percentage prenatal survival and percentage of male foetuses in the *** the understanding of the role of vitamin D across important developmental timepoints in relation to foetal growth is essential to improve reproductive success in livestock species.

关键词： Porcine Pregnancy Vitamin D

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Early postoperative feeding in resectional gastrointestinal surgical cancer patients

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World journal of Gastrointestinal Oncology 2010年第4期2卷 187-191页

作者： emma j Osland Muhammed Ashraf Memon Department of Surgery and Nutrition Ipswich HospitalIpswichQueensland 4305Australia Department of Mathematics and Computing Australian Centre for Sustainable CatchmentsUniversity of Southern QueenslandToowoombaQueensland 4305Australia Department of Surgery University of QueenslandBrisbaneQueensland 4305Australia Faculty of Health Sciences and Medicine Bond UniversityGold CoastQueensland 4305Australia School of Health and Social Sciences University of BoltonBoltonLancashire BL3 5ABUnited Kingdom

Malnutrition is present in the majority of patients presenting for surgical management of gastrointestinal malignancies,due to the effects of the tumour and preoperative anti-neoplastic *** traditional practice of fasting patients until the resumption of bowel function threatens to further contribute to the malnutrition experienced by these ***,the rationale behind this traditional practice has been rendered obsolete through developments in anaesthetic agents and changes to postoperative analgesia ***,there is a growing body of literature that consistently demonstrates that providing oral or tube feeding proximal to the anastomosis within 24 h postoperatively,is not only safe,but might be associated with significant benefits to the postoperative *** post operative feeding should therefore be adopted as a standard of care in oncology patients undergoing gastrointestinal resections.

关键词： Early feeding Surgery Meta-analysis Randomised controlled trials

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Does the scent of a potential mate prevent the resorption of oocytes by apoptosis in Nauphoeta cinerea？

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Insect Science 2009年第5期16卷 393-398页

作者： emma L. B. Barrett Allen j. Moore Patricia j. Moore Centre for Ecology and Conservation School of Biosciences University of Exeter Cornwall Campus Penryn Cornwall UK

We expect organisms to have evolved mechanisms to gather and use the information available within their environments, to steer resource investment decisions toward the traits that will give the greatest fitness returns. Pheromones are social signals, a common purpose of which is to act as indicators of mate presence. Consequently, pheromones have the potential to act as signals to increase or maintain reproductive investment over that of competing life-history traits. In the cockroach, Nauphoeta cinerea （Oliver）, females pay costs of maintaining investment in reproduction when there are no males, and males produce pheromones that are known to effect female reproductive outcomes. Whether the pheromones have an influence on resource physiology is unknown. We subjected newly eclosed females to either a synthetic blend of male pheromones or control. We dissected females at 7, 12, 17 or 22 days. We measured apoptosis levels and size of all oocytes within the vitellerium, and measured dry fat body mass. Synthetic male pheromone blend did not have an effect on any measure of female reproductive or somatic resource physiology. Although negative results are always problematic, the success of the synthetic pheromone method in the past suggests that females may be insensitive to male pheromones in the pre-oviposition period, and may rely on mating stimulus rather than pheromone as the cue for oocyte maintenance and growth. Previous studies reporting effects of male pheromones on female reproduction suggest that the period of pheromone sensitivity may be between mating and birth.

关键词： apoptosis environment oocyte ovary pheromone predictable trade-off

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An assessment of African lion Panthera leo sociality via social network analysis： prerelease monitoring for an ex situ reintroduction program

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Current Zoology 2017年第3期63卷 301-311页

作者： emma j. DUNSTON jackie ABEL Rebecca E. DOYLE jacqui KIRK Victoria B. HILLEY Andrew FORSYTH emma jENKINS Rafael FREIRE School of Animal and Veterinary Sciences Charles Sturt University Wagga Wagga NSW 2678 Australia Social and Conservation Psycology Coventry University Coventry CV1 5FB UK African Lion & Environmental Research Trust Melrose Farm Livingstone 23345 Zambia Animal Welfare Science Centre The University of Melbourne Parkville Victoria 3010 Australia African Lion & Environmental Research Trust Antelope Park Gweru Midlands Zimbabwe Siyafunda The Greater Makalali Private Game Reserve Harmony 27 Hoedspruit 0895 South Africa

The wild population of the African lion Panthera leo continues to decline, requiring alternate conservation programs to be considered. One such program is ex situ reintroduction. Prior to release, longterm monitoring and assessment of behavior is required to determine whether prides and coalitions behave naturally and are sufficiently adapted to a wild environment. Social network analysis （SNA） can be used to provide insight into how the pride as a whole and individuals within it, function. Our study was conducted upon 2 captive-origin prides who are part of an ex situ reintroduction program, and 1 wild pride of African lion. Social interactions were collected at all occurrence for each pride and categorized into greet, social grooming, play, and aggression. Betweenness centrality showed that offspring in each pride were central to the play network, whereas degree indicated that adults received （indegree） the greatest number of overall social interactions, and the adult males of each pride were least likely to initiate （outdegree） any interactions. Through the assessment of individual centrality and degree values, a social keystone adult female was identified for each pride. Social network results indicated that the 2 captive-origin prides had formed cohesive social units and possessed relationships and behaviors comparable with the wild pride for the studied behaviors. This study provided the first SNA comparison between captive-bred origin and a wild pride of lions, providing valuable information on individual and pride sociality, critical for determining the success of prides within an ex situ reintroduction program.

关键词： African lion Panthera leo conservation ex situ reintroduction social interactions.

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Mercury photoreduction and photooxidation in lakes：Effects of filtration and dissolved organic carbon concentration

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journal of Environmental Sciences 2018年第6期30卷 151-159页

作者： Nelson j.O’Driscoll emma Vost Erin Mann Sara Klapstein Robert Tordon Matthew Lukeman Department of Earth & Environmental Science Acadia University Wolfville B4P 2R6 Nova Scotia Canada Environment Canada Dartmouth Nova Scotia Canada Department of Chemistry Acadia University Wolfville B4P 2R6 Nova Scotia Canada

Mercury is a globally distributed, environmental contaminant. Quantifying the retention and loss of mercury is integral for predicting mercury-sensitive ecosystems. There is little information on how dissolved organic carbon（DOC） concentrations and particulates affect mercury photoreaction kinetics in freshwater lakes. To address this knowledge gap,samples were collected from ten lakes in Kejimkujik National Park, Nova Scotia（DOC： 2.6–15.4 mg/L）. Filtered（0.2 μm） and unfiltered samples were analysed for gross photoreduction, gross photooxidation, and net reduction rates of mercury using pseudo first-order curves. Unfiltered samples had higher concentrations（p = 0.04） of photoreducible divalent mercury（Hg（II）RED）（mean of 754 ± 253 pg/L） than filtered samples（mean of 482 ± 206 pg/L）;however, gross photoreduction and photooxidation rate constants were not significantly different in filtered or unfiltered samples in early summer. DOC was not significantly related to gross photoreduction rate constants in filtered（R2= 0.43; p = 0.08） and unfiltered（R2= 0.02; p = 0.71） samples; DOC was also not significantly related to gross photooxidation rate constants in filtered or unfiltered samples. However, DOC was significantly negatively related with Hg（Ⅱ）RED in unfiltered（R2= 0.53; p = 0.04）, but not in filtered samples（R2= 0.04;p = 0.60）. These trends indicate that DOC is a factor in determining dissolved mercury photoreduction rates and particles partially control available Hg（Ⅱ）RED in lake water. This research also demonstrates that within these lakes gross photoreduction and photooxidation processes are close to being in balance. Changes to catchment inputs of particulate matter and DOC may alter mercury retention in these lakes and could partially explain observed increases of mercury accumulation in biota.

关键词： Mercury Photoreduction Photooxidation Dissolved organic carbon(DOC) Particulates Kejimkujik National Park

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Effects of L-arginine and L-citrulline supplementation in reduced protein diets for broilers under normal and cyclic warm temperature

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Animal Nutrition 2021年第4期7卷 927-938页

作者： Hiep Thi Dao Nishchal K.Sharma emma j.Bradbury Robert A.Swick School of Environmental and Rural Science Faculty of ScienceAgricultureBusiness and LawUniversity of New EnglandArmidaleAustralia Faculty of Animal Science Vietnam National University of AgricultureTrau Quy TownGia Lam DistrictHanoiViet Nam Ridley AgriProducts MelbourneVictoriaAustralia

Heat stress causes significant economic losses in the broiler *** supplementation of arginine(Arg)and citrulline(Cit)might increase the performance of broilers raised under warm temperature due to vasodilation *** study investigated the effects of L-Arg or L-Cit supplementation in broilers fed a reduced protein wheat-based diet deficient in Arg under thermoneutral(NT)and cyclic warm temperature(WT).Ross 308 cockerels(n=720)were randomly allocated to 4 dietary treatments with 12 replicates of 15 birds per pen from d 7 to *** 4 treatments were:normal protein(NP),i.e.,22.3%and 20.9%crude protein in grower and finisher,respectively;reduced protein(RP),i.e.,2.5%lower protein and deficient in Arg;and RP supplemented with 0.28%Arg(RP-Arg)or 0.28%Cit(RP-Cit).A factorial arrangement of treatments was applied during the finisher phase(21 to 35 d).Factors were:diet(4 diets above);and temperature,NT(24℃)or cyclic WT(33±1℃for 6 h per day)with 6 replicate pens per *** 7 to 35 d and 21 to 35 d,the birds fed the RP diet had lower body weight gain(BWG)and higher FCR compared to the NP diet(P0.05)compared to birds exposed to *** by temperature interactions were not observed for performance parameters during the period of WT(P>0.05).On d 35,the RP-fed birds had a lower yield of thigh and drumstick,higher fat pad,lower femur ash,and breaking strength but similar serum uric acid level and higher nitrogen digestibility on d 21 compared to those offered NP(P<0.05).Supplementation of Arg or Cit to RP resulted in increased femur ash on d 35(P<0.05).Thus,feeding the NP diets is necessary to maintain growth performance in broilers regardless of the temperature conditions.

关键词： Arginine Citrulline Meat chickens Low protein Heat stress

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Response of laying hens to L-arginine,L-citrulline and guanidinoacetic acid supplementation in reduced protein diet

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Animal Nutrition 2021年第2期7卷 460-471页

作者： Hiep Thi Dao Nishchal K.Sharma emma j.Bradbury Robert A.Swick School of Environmental and Rural Science Faculty of ScienceAgricultureBusiness and LawUniversity of New England2351New South WalesAustralia Faculty of Animal Science Vietnam National University of AgricultureTrau Quy TownGia Lam DistrictHanoiViet Nam Ridley AgriProducts Level 4565 Bourke StreetMelbourneVICAustralia

A study was conducted with Hy-Line Brown laying hens to examine the effects of reduced protein diet,deficiency of arginine(Arg),and addition of crystalline Arg,citrulline(Cit)and guanidinoacetic acid(GAA)as substitutes for *** performance,egg quality,serum uric acid,liver and reproductive organ weights,and energy and protein digestibility were measured using a completely randomized design with 5 *** were a standard diet(17%protein diet;SP),a reduced diet(13%protein diet deficient in Arg;RP)and RP with added Arg(0.35%,RP-Arg),GAA(0.46%equivalent to 0.35%Arg,RP-GAA)or Cit(0.35%,RP-Cit)to the level of *** was hypothesized that performance would decrease with Arg deficient RP diet and the addition of GAA or Cit in RP would allow birds to perform similar or greater than Arg-added RP *** experiment was conducted from 20 to 39 wk of age but the treatment effect was seen only after 29 wk of *** birds offered RP had reduced egg and albumin weights(P0.05).The birds offered RP-GAA decreased FI and egg production(P0.05).However,birds offered the RP-Cit diet tended to have higher Haugh unit(P=0.095)and lower shell breaking strength(P=0.088)compared to all other treatments while those offered RP-GAA had higher energy digestibility(P<0.05)than all other groups but *** limited performance response of hens fed RP with added Arg,GAA,or Cit may be due to deficiency of some other nutrients in RP such as phenylalanine,potassium or non-essential amino acids and other components of soybean meal in the diet.

关键词： Arginine Citrulline Guanidinoacetic acid Laying hen Reduced protein

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