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Progress in Natural Science:Materials International 2008年第8期18卷 931-937页

作者： Rui Jia a, Jing Bai a,*, Lingfeng Wenb,c, Dagan Fengb,c a Department of Biomedical Engineering, Tsinghua University, Room B209, Building of Medical Science, Beijing 100084, china b School of Information Technologies, University of Sydney, NSW 2006, Australia c Department of Electronic and Information Engineering, Hong Kong Polytechnic University, Hong Kong Department of Biomedical Engineering Tsinghua University Room B209 Building of Medical Science Beijing 100084 China School of Information Technologies University of Sydney NSW 2006 Australia Department of Electronic and Information Engineering Hong Kong Polytechnic University Hong Kong

The inherent noise in positron emission tomography (PET) leads to the instability of quantitative indicators, which may affect the diagnostic accuracy for differentiating malignant and benign lesions in the management of lung cancer. In this paper, the reliability of retention index (RI) is systematically investigated by using computer simulation for the dual-time-point imaging protocol. The area under the receiver operating characteristic (ROc) curve is used to evaluate the optimal protocol. Results demonstrate that the reliability of RI is affected by several factors including noise level, lesion type, and imaging schedule. The RIs with small absolute values suffer from worse reliability than those larger ones. The results of ROc curves show that over delayed second scan cannot help to improve the diagnostic performance further, while an early first scan is expected. The method of optimization based on ROc analysis can be easily extended to comprise as many lesions as possible.

关键词： Reliability Retention index PET (positron emission tomography) Simulation ROc (receiver operating characteristic)

characterization of Glycerol-Extractable Organic Matter from Etna Soils of Different Ages

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Pedosphere 2010年第1期20卷 120-128页

作者： A. BAGLIERI A. IOPPOLO M. NGRE c. ABBATE M. GENNARI Dipartimento di scienze Agronomiche Agrochimiche e delle Produzioni Animali Sezione di Scienze Agrochimiche Universitàdi Catania Dipartimento di Valorizzazione e protezione delle Risorse Agroforestali Settore Chimica Agraria Universitàdi Torino

We characterized humic acids （HAs） and glycerol-extractable organic fractions （GEOFs） extracted from four Andisols, taken from comparable soil-climate conditions on the east side of Mount Etna. The soils were formed on old lava （about 9000 years ago）, old tephra （about 8 700 years ago）, recent lava （about 2 600 years ago） and recent tephra （about 3600 years ago）. A part of the organic matter of the soils, deprived of HAs and fulvic acids （FAs）, was isolated by glycerol extraction. The GEOF can not be extracted with alkaline solutions, probably because it is closely bound to the mineral component of the soil. The characterization of the extracted organic fraction was carried out using elementary and functional group analysis and Fourier transform infrared （FT-IR） spectroscopy. About 20 extractions were necessary to extract the HA and FA from the older soils and about 10 extractions to extract them from the younger soils. Data showed that the cEOFs had a greater ash content and a smaller N content, as well as a greater presence of aliphatic compounds and carboxylic groups as compared to the HA extracted from the same soil. The GEOFs extracted from younger soils also had a lower yield, ash and cOOH-group content, and were more aliphatic than the GEOF extracted from older soils. Finally, the GEOFs were more closely bound to the amorphous component of the soil （＇short-range＇ minerals） and consequently less subject to biodegradation.

关键词： Andisol Fourier transform infrared spectra humic substances

Growth efficiency,intestinal biology,and nutrient utilization and requirements of black soldier fly(Hermetia illucens)larvae compared to monogastric livestock species:a review

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Journal of Animal Science and Biotechnology 2022年第5期13卷 1262-1281页

作者： Mohammad M.Seyedalmoosavi Manfred Mielenz Teun Veldkamp Gurbuz Das cornelia c.Metges Research Institute for Farm Animal Biology(FBN) Institute of Nutritional Physiology18196 DummerstorfGermany Wageningen UR Livestock ResearchP.O.Box 3386700AH WageningenNetherlands

In recent years,interest in the larvae of black soldier fly(BSF)(Hermetia illucens)as a sustainable protein resource for livestock feed has increased ***,knowledge on the nutritional and physiological aspects of this insect,especially compared to other conventional farmed animals is *** review presents a critical comparison of data on the growth potential and efficiency of the BSF larvae(BSFL)compared to conventional monogastric livestock *** of BSFL over other monogastric livestock species includes their high growth rate and their ability to convert low-grade organic waste into high-quality protein and fat-rich biomass suitable for use in animal *** using literature data suggest that BSFL are more efficient than broilers,pigs and fish in terms of conversion of substrate protein into body mass,but less efficient than broilers and fish in utilization of substrate gross energy to gain body *** growth efficiency varies greatly depending on the nutrient quality of their dietary *** might be associated with the function of their gastrointestinal tract,including the activity of digestive enzymes,the substrate particle characteristics,and their intestinal microbial *** conceived advantage of BSFL having an environmental footprint better than conventional livestock is only true if BSFL is produced on low-grade organic waste and its protein would directly be used for human ***,their potential role as a new species to better close nutrient cycles in agro-ecological systems needs to be reconsidered,and we conclude that BSFL is a complementary livestock species efficiently utilizing organic waste that cannot be utilized by other *** addition,we provide comparative insight into morpho-functional aspects of the gut,characterization of digestive enzymes,gut microbiota and fiber ***,current knowledge on the nutritional utilization and requirements of BSFL in te

关键词： Black soldier fly comparative growth performance Farm animals Insects as feed Intestinal function Nutrient cycles Nutrition and physiology

PREPARATION OF THE OPEN PORE ALUMINUM FOAMS USING INVESTMENT cASTING PROcESS

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Acta Metallurgica Sinica(English Letters) 2001年第1期14卷 27-32页

作者： L.c. Wang and F. Wang (Taiyuan Heavy Machinery Institute, Taiyuan 030024, china) Taiyuan Heavy Machinery Institute

This paper briefly presents characteristics, application and development of the metallic foams. Sound specimen has been achieved with prepared foam aluminum by using investment casting process. The preparation of plaster prefabricated mould is one key in investment casting. Main composition, ingredient and affecting factors of plaster mould are also discussed and the vacuum-infiltrated shaping technique is found to be another important link. The penetration model and the affecting mechanism of the main parameters are also analyzed. As a result, the optimum values are determined.

关键词： Aluminum alloys Foamed products Foams Molds Plaster

机械辅助呼吸早产儿支气管内病原体依赖性炎症细胞因子及抗炎细胞因子:前瞻性队列研究

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世界核心医学期刊文摘（儿科学分册） 2005年第2期1卷 57-58页

作者： De Dooy J. Ieven M. stevens W. 虎小毅 Dr.University Hospital AntwerpDepartment of Pediatrics Division of NeonatologyWilrijkstraat 10B-2650 EdegemBelgium

细胞因子等炎症介质与呼吸道病原体之间的关系目前仍不明了。本前瞻性队列研究评估了141例机械辅助呼吸早产儿在出生时支气管内病原体侵袭情况。分析了脐血c反应蛋白(cRP)与呼吸道细胞因子免疫应答的关系。在所研究的141例早产儿中,有37... 详细信息

细胞因子等炎症介质与呼吸道病原体之间的关系目前仍不明了。本前瞻性队列研究评估了141例机械辅助呼吸早产儿在出生时支气管内病原体侵袭情况。分析了脐血c反应蛋白(cRP)与呼吸道细胞因子免疫应答的关系。在所研究的141例早产儿中,有37例(26%)

关键词：机械辅助呼吸支气管内抗炎细胞因子炎症细胞因子前瞻性队列研究炎症介质脐血免疫应答革兰阴性菌生时

电针降压作用的证据、机制和临床应用（英文）

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生理学报 2017年第5期69卷 587-597页

作者： John c Longhurst Stephanie c Tjen-A-Looi 加州大学欧文分校医学院生理生物物理和药理学院 Susan Samueli综合医学研究中心

高血压增加心血管动脉粥样硬化、中风、残疾和死亡的风险,是一个严重的全球健康问题。收缩压和舒张压,尤其是收缩压随年龄增长而增加。药物治疗高血压存在副作用,可以考虑辅助治疗,比如针灸通过调节体内神经-内分泌系统降低血压。用基... 详细信息

高血压增加心血管动脉粥样硬化、中风、残疾和死亡的风险,是一个严重的全球健康问题。收缩压和舒张压,尤其是收缩压随年龄增长而增加。药物治疗高血压存在副作用,可以考虑辅助治疗,比如针灸通过调节体内神经-内分泌系统降低血压。用基础研究指导临床实践的结果显示,低频,低强度电针降低约70%的轻中度停服降压药高血压患者的交感神经活动。每周1次、持续8周的电针治疗结束后,收缩压和舒张压(较小幅度)降低能维持2~4周,甚至1个月。至于针灸的长期疗效、耐药患者的治疗以及对服药患者的疗效等问题,有待进一步研究。目前的证据表明针灸对高血压有一定的疗效。

关键词：交感神经系统转录调节肾素去甲肾上腺素高血压

Fertility,genome stability,and homozygosity in a diverse set of resynthesized rapeseed lines

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The crop Journal 2023年第2期11卷 468-477页

作者： Elizabeth Ihien Katche Antje Schierholt Heiko c.Becker Jacqueline Batley Annaliese S.Mason Plant Breeding Department The University of Bonn53115 BonnGermany Department of Plant Breeding Justus Liebig University35392 GiessenGermany Department of crop Sciences Division of Plant Breeding MethodologyGeorg-August University Göttingen37073 GöttingenGermany School of Biological Sciences The University of Western AustraliaPerthWA 6009Australia

Rapeseed(Brassica napus,AAcc)was formed by hybridization between progenitor species Brassica rapa(AA)and Brassica oleracea(cc).As a result of a limited number of hybridization events between specific progenitor genotypes and strong breeding selection for oil quality traits,rapeseed has limited genetic *** production of resynthesized *** lines via interspecific hybridization of the diploid progenitor species *** and *** is one possible way to increase genetic variation in ***,most resynthesized lines produced so far have been reported to be meiotically unstable and infertile,in contrast to established *** *** hinders both maintenance and use of this germplasm in breeding *** characterized a large set of 140 resynthesized lines produced by crosses between *** and ***,as well as between *** and wild c genome species(***,***,***,***,*** and ***)for purity(homozygosity),fertility,and genome ***-pollinated seed set,seeds per ten pods as well as percentage pollen viability were used to estimate *** genotyping was performed using the Illumina Infinium Brassica 60K array for 116 genotypes,with at least three individuals per *** of the material which had been advanced through multiple generations was no longer pure,with heterozygosity detected corresponding to unknown parental contributions via *** and genome stability were both *** lines had high numbers of copy number variants(cNVs),indicative of meiotic instability,and high numbers of cNVs were significantly associated with reduced *** putatively stable resynthesized *** lines were *** investigation of these lines may reveal the mechanisms underlying this *** results suggest that selection of stable resynthesized lines for breeding purposes is possible.

关键词： Fertility Genome stability copy number variants SNP genotyping Resynthesized lines

Laplace-Beltrami Differentiability of Positive Definite Kernels on the Sphere

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Acta Mathematica Sinica,English Series 2013年第1期29卷 93-104页

作者： M. H. cASTRO V. A. MENEGATTO c. P. OLIVEIRA Faculdade de Matemática Universidade Federal de UberladiaCaixa Postal 593 38400-902 Uberlandia MG Brasil Departamento de Matemática ICMC-USPSao CarlosCaixa Postal 668 13560-970 Sao Carlos SP Brasil IcE-DMc Universidade Federal de Itajubá37500-903 Itajubá MG Brasil

This contribution gives results on the action of the Laplace-Beltrami derivative on suffi- ciently smooth kernels on the sphere, those defined by absolutely and uniformly expansions generated by a family of at least continuous functions. Among other things, the results show that convenient Laplace-Beltrami derivatives of positive definite kernels on the sphere are positive definite too. We also include similar results on the action of the Laplace-Beltrami derivative on condensed spherical harmonic expansions.

关键词： Sphere Laplace-Beltrami operator Laplace-Beltrami derivative positive definite kernels,spherical harmonics

Patch-guided facial image inpainting by shape propagation

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第2期10卷 232-238页

作者： Yue-ting ZHUANG Yu-shun WANG Timothy K. SHIH Nick c. TANG Institute of Artilicial Intelligence School of Computer Science and Technology Zhejiang University Hangzhou 310027 China Department of compter Science National Taipei University of Education Taipei 10671 Taiwan China Department of comp.ter Science and Information Engineering Tamkang University Taipei 25137 Taiwan China

Images with human faces comprise an essential part in the imaging realm. Occlusion or damage in facial portions will bring a remarkable discomfort and information loss. We propose an algorithm that can repair occluded or damaged facial images automatically, named ‘facial image inpainting＇. Inpainting is a set of image processing methods to recover missing image portions. We extend the image inpainting methods by introducing facial domain knowledge. With the support of a face database, our approach propagates structural information, i.e., feature points and edge maps, from similar faces to the missing facial regions. Using the interred structural information as guidance, an exemplar-based image inpainting algorithm is employed to copy patches in the same face from the source portion to the missing portion. This newly proposed concept of facial image inpainting outperforms the traditional inpainting methods by propagating the facial shapes from a face database, and avoids the problem of variations in imaging conditions from different images by inferring colors and textures from the same face image. Our system produces seamless faces that are hardly seen drawbacks.

关键词： Image inpainting Face reconstruction Feature point extraction

Intraspecific maternal competition in insect parasitoids induces summer diapause in insect parasitoids

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Insect Science 2018年第6期25卷 1080-1088页

作者： Kévin Tougeron George Hraoui cécile Le Lann Joan van Baaren Jacques Brodeur UMR-cNRS 6553Ecobio Universitéde Rennes 1RennesFrance Université Bretagne Loire Cité InternationaleRennesFrance Département de Sciences Biologiques Institut de Recherche en Biologie VegétaleUniversitéde MontréalMontréalCanada

Organisms often live in unpredictable environments and have to adopt life history strategies that optimize their fitness under these *** to bet-hedging theory,individuals can reduce variation in fitness outcomes by investing in different strategies at the same *** arthropods,facultative summer diapause enables survival during dry and hot periods of the year,and can be triggered by a decrease in resource abundance. However,the effect of resource depletion on diapause induction has never been disentangled from the effect of the perception of the presence of *** two solitary parasitoid species of cereal aphids as a model system,Aphidius avenae (Haliday)and Aphidius rhopalosiphi (De Stefani-Perez)(Hymenoptera:Braconidae),we tested whether (i)low absolute host density and/or (ii)high levels of parasitoid females'competition lead to maternal-induced summer diapause in parasitoid *** summer-like climatic conditions,emerging parasitoid females were (i)reared alone and exposed to different host densities (from 5 to 130 aphids),or (ii)reared together with competing females (from 2 to 20 females)and then exposed individually to 50 *** both parasitoid species, low aphid densities did not induce summer ***,the incidence of summer diapause increased up to a maximum of 11% with increasing levels of competition expe rienced by female *** than 60% of the females produced both diapausing and nondiapausing offspring after being kept at the two highest competition densities. Such a "spreading-the-risk"strategy has likely evolved to optimize parasitoid fitness by preventing the following generation from exposure to low populations of suitable hosts and high mortality from *** results provide the first experimental evidence of direct maternal competition-induced diapause in insects,and may change the way we apprehend the evolution of arthropod seasonal ecology,by considering intraspecific c

关键词： aestivation bet-hedging host density intraspecific competition superparasitism