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纳米晶Ce-Fe-B基磁体的结构与性能调控

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纳米晶Ce-Fe-B基磁体的结构与性能调控

Transition from early intervention program to primary school in children with autism spectrum disorder

稀土元素镧铈钇应用研究研讨会暨广东省稀土产业技术联盟成立大会

作者：江庆政胡永峰 Sajjad ur Rehman 钟震晨江西省稀土磁性材料及器件重点实验室&江西理工大学稀土磁性材料及器件研究所 Canadian light Source University of Saskatchewan

钕铁硼(Nd-Fe-B)磁体的广泛应用促使全球对中低丰度稀土元素钕、镨、镝、铖的需求猛增。然而,以铈(Ce)为主的高丰度稀土元素在稀土永磁中仍未获得大量应用,造成稀土资源的严重不平衡利用。从原材料成本和国家战略安全角度考虑,高性价比... 详细信息

钕铁硼(Nd-Fe-B)磁体的广泛应用促使全球对中低丰度稀土元素钕、镨、镝、铖的需求猛增。然而,以铈(Ce)为主的高丰度稀土元素在稀土永磁中仍未获得大量应用,造成稀土资源的严重不平衡利用。从原材料成本和国家战略安全角度考虑,高性价比的高丰度稀土永磁的研究与开发势在必行。本文采用熔体快淬技术制备了纳米晶Ce-Fe-B基永磁合金,通过非稀土元素添加优化了合金的成分。Ce原子l边X射线吸收精细结构图谱(图1)表明,成分优化后合金中的Ce价态比重增加,而Ce价态比重降低。将低熔点NdCu合金粉末与上述优化后的Ce-Fe-B合金粉末混合,通过放电等离子烧结(SPS)技术制备了具有双主相结构的纳米晶(Nd,Ce)-Fe-B磁体。透射电镜结果(图2)显示,部分Nd原子扩散进入了主相晶粒内部,由于NdFeB化合物具有比CeFeB化合物更优异的内禀性能,(Nd,Ce)-Fe-B主相的形成有效改善了磁体的硬磁性能和热稳定性。与快淬合金相比,SPS磁体晶间交换耦合作用明显弱化,长程静磁相互作用增强。

关键词：纳米晶 Ce-Fe-B基磁体 Ce价态放电等离子烧结

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World Journal of Clinical Pediatrics 2017年第4期6卷 169-175页

作者： Valsamma Eapen Rachel Grove Elizabeth Aylward Annette V Joosten Scott I Miller Gerdamari Van Der Watt kathryn Fordyce Cheryl Dissanayake Jacqueline Maya Madonna Tucker Antonia DeBlasio Academic Unit of Child Psychiatry South West Sydney (AUCS)ICAMHSMental Health CentreL1Liverpool Hospital School of Psychiatry Uni-versity of New South Wales Cooperative Research Centre for living with Autism (Autism CRC) KU Marcia Burgess Autism Specific Early learning and Care Centre School of Occupational Therapy and Social Work Curtin University Western Australia Autism Specific Early learning and Care Centre Autism Association of Western Australia St Giles Society North West Tasmania Autism Specific Early learning and Care Centre la Trobe University AEIOU Foundation Anglicare SA Daphne St Autism Specific Early learning and Care Centre

AIM To evaluate the characteristics that are associated with successful transition to school outcomes in preschool aged children with *** Twenty-one participants transitioning from an early intervention program were assessed at two time points; at the end of their preschool placement and approximately 5 mo later following their transition to school. Child characteristics were assessed using the Mullen Scales of Early learning, Vineland Adaptive Behaviour Scales, Social Communication Questionnaire and the Repetitive Behaviour Scale. Transition outcomes were assessed using Teacher Rating Scale of School Adjustment and the Social Skills Improvement System Rating Scales to provide an understanding of each child's school adjustment. The relationship between child characteristics and school outcomes was evaluated. RESUlTS Cognitive ability and adaptive behaviour were shown to be associated with successful transition to school outcomes including participation in the classroom and being comfortable with the classroom teacher. These factors were also associated with social skills in the classroom including assertiveness and engagement. CONClUSION Supporting children on the spectrum in the domains of adaptive behaviour and cognitive ability, including language skills, is important for a successful transition to school. Providing the appropriate support within structured transition programs will assist children on the spectrum with this important transition, allowing them to maximise their learning and behavioural potential.

关键词： Autism spectrum disorder School transition Primary school Outcomes

Tumor suppressor genes on frequently deleted chromosome 3p in nasopharyngeal carcinoma

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Chinese Journal of Cancer 2012年第5期31卷 215-222页

作者： Juan Chen li Fu li-Yi Zhang Dora l. Kwong li Yan Xin-Yuan Guan Department of Clinical Oncology The University of Hong Kong Hong Kong P. R. China Cancer Center Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei 430023 P. R. China State Key laboratory of Oncology in South China Sun Yat-sen University Cancer Center Guangzhou Guangdong 510060 P. R. China.

Nasopharyngeal carcinoma (NPC) is among the most common malignancies in southern *** of genomic DNA,which occurs during the complex pathogenesis process for NPC,represents a pivotal mechanism in the inactivation of tumor suppressor genes (TSGs).In many circumstances,loss of TSGs can be detected as diagnostic and prognostic markers in *** short arm of chromosome 3 (3p) is a frequently deleted chromosomal region in NPC,with 3p21.1-21.2 and 3p25.2-26.1 being the most frequently deleted minimal *** recent years,our research group and others have focused on the identification and characterization of novel target TSGs at 3p,such as RASSF1A,BlU,RBMS3,and CHl1,in the development and progression of *** this review,we summarize recent findings of TSGs at 3p and discuss some of these genes in detail.A better understanding of TSGs at 3p will significantly improve our understanding of NPC pathogenesis,diagnosis,and treatment.

关键词： 3号染色体抑癌基因鼻咽癌删除全国人民代表大会基因组DNA 肿瘤抑制基因发病机制

柏子仁单方注射液对睡眠模型猫影响的实验研究

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天津中医学院学报 2000年第3期19卷 38-40页

作者：李海生王安林于利人天津武警医学院 300162

目的 :研究柏子仁单方对猫觉醒——睡眠节律的影响。方法 :采用多导睡眠图描记方法 ,以脑电图 (EEG)、肌电图 (EMG)、(EDG)不同变化为睡眠分期的区分指标。结果 :腹腔注射柏子仁单方注射液后 ,睡眠时间在注射药物后第 2个小时段即延长 ... 详细信息

目的 :研究柏子仁单方对猫觉醒——睡眠节律的影响。方法 :采用多导睡眠图描记方法 ,以脑电图 (EEG)、肌电图 (EMG)、(EDG)不同变化为睡眠分期的区分指标。结果 :腹腔注射柏子仁单方注射液后 ,睡眠时间在注射药物后第 2个小时段即延长 ,并缓慢增加 ,第 6个小时段增加达最大 ,之后缓慢降低。猫在睡眠过程中 ,与对照实验组相比 ,慢波睡眠期延长 (P<0 .0 0 1) ,其中慢波睡眠浅睡期延长 (P<0 .0 5 ) ,慢波睡眠深睡期明显延长 (P<0 .0 0 1) ;异相睡眠期变化无统计学意义。结论 :柏子仁醇法提取后的有效成分可使猫的慢波睡眠时间延长 ,提示其有效成分有助于猫的入睡 ,并使深睡时间明显延长。

关键词：猫多导睡眠图柏子仁中药药理

Association of Varroa destructor females in multiply infested cells of the honeybee Apis mellifera

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Insect Science 2019年第1期26卷 128-134页

作者： Alexis l.Beaurepaire James D.Ellis Klemens J.Krieger Robin F.A.Moritz Institut for Biologie Martin-Luther-University Halle-WittenbergHalle a.d.SaaleGermany ur 406 Abeilles et Environnement INRACentre de Recherche Provence-Alpes-Cote d'AzurAvignonFrance Entomology &Nematology Department University Florida GainesvilleFloridaUSA Bayer Animal Health GmbH LeverkusenGermany Department of Zoology and Entomology University of PretoriaPretoriaSouth Africa

The genetic diversity of Varroa destructor (Anderson &Trueman)is limited outside its natural range due to population bottlenecks and its propensity to *** light of the arms race between *** and its honeybee (Apis mellifera l.)host, any mechanism enhancing population admixture of the mite may be *** way that admixture can occur is when two genetically dissimilar mites coinvade a brood cell, with the progeny of the foundresses *** determined the relatedness of 393 pairs of *** foundresses,each pair collected from a single bee brood cell (n =five colonies).We used six microsatellites to identify the genotypes of mites coinvading a cell and calculated the frequency of pairs with different or the same *** found no deviation from random coinvasion,but the frequency of cells infested by mites with different genotypes was *** rate of recombination,coupled with a high transmission rate of mites,homogenized the allelic pool of mites within the apiary.

关键词： Apis mellifera host-parasite coevolution inbreeding avoidance mating behavior population genetics Varroa destructor

Nitrous Oxide Emission by Agricultural Soils: A Review of Spatial and Temporal Variability for Mitigation

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Pedosphere 2012年第4期22卷 426-433页

作者： C. HNAUlT A. GROSSEl B. MARY M. ROUSSEl J. lONARD INRA UR 272 Science du Sol Centre de Recherches d'Orléans CS 40001 Ardon 45075 Orléans cedex 2 (France) INRA-Université de Bourgogne UMR 1229 Microbiologie du sol et de l'Environnement 17 rue Sully BP 86510 21065 Dijon cedex (France) INRA US 1158 Agro-Impact Po le du Griffon 180 rue Pierre-Gilles de Gennes 02000 Barenton-Bugny (France)

This short review deals with soils as an important source of the greenhouse gas N2O. The production and consumption of N2O in soils mainly involve biotic processes: the anaerobic process of denitrification and the aerobic process of nitrification. The factors that significantly influence agricultural N2O emissions mainly concern the agricultural practices (N application rate, crop type, fertilizer type) and soil conditions (soil moisture, soil organic C content, soil pH and texture). large variability of N2O fluxes is known to occur both at different spatial and temporal scales. Currently new techniques could help to improve the capture of the spatial variability. Continuous measurement systems with automatic chambers could also help to capture temporal variability and consequently to improve quantification of N2O emissions by soils. Some attempts for mitigating soil N2O emissions, either by modifying agricultural practices or by managing soil microbial functioning taking into account the origin of the soil N2O emission variability, are reviewed.

关键词： agricultural practices fertilization greenhouse gas N2O fluxes soil-atmosphere interface

Twenty-five years of research on the effects of exercise training in breast cancer survivors:A systematic review of the literature

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World Journal of Clinical Oncology 2014年第2期5卷 177-190页

作者： Claudio l Battaglini Robert C Mills Brett l Phillips Jordan T lee Christina E Story Marcelo GB Nascimento Anthony Carl Hackney Department of Exercise and Sport Science Christina StoryChapel Hill NC 27599 United States lineberger Comprehensive Cancer Center Chapel Hill NC 27599 United States Exercise Oncology Research laboratory University of North CarolinaChapel Hill NC 27599 United States Centro Universitario de Brasilia (UniCeub) SEPN 707/907-Campus do UniCEUB-Asa Norte-Brasília-DF-70790-075Brazil Department of Nutrition University of North Carolina at Chapel HillChapel Hill NC 27599 United States

AIM:To investigate the role of exercise training the past 25 years on major physiological-psychological outcomes studied thus far in this patient ***:Pub Med, Medline Plus, the Cochrane library, Web of Science, SportD iscus, Embase, Scorpus, and Google Scholar were searched from September to November 2013 to identify exercise training studies that used objective measurements of fitness and/or patient reported outcomes assessed pre and post-exercise training with statistical analyses performed in at least one of the following outcome measurements:Cardiorespiratory function, body composition, muscular strength, fatigue, depression, and overall quality of life. Five reviewers independently identified the studies that met the criteria for the review and discrepancies were resolved by consensus among all ***:Fifty-one studies were included in this review with 5 from the period between 1989-1999, 11 from 2000-2006, and 35 from 2007-2013. The evolution of study designs changed from aerobic only exercise training interventions(1989-1999), to a combination of aerobic and resistance training(2000-2006), to studies including an arm of resistance training or examining the effects of resistance training as the main mode of exercise(2007-2013). Overall, the benefits of exercise showed improvements in cardiorespiratory function, body composition, strength, and patient reported outcomes including fatigue, depression, and quality of ***:Exercise training appears to be safe for most breast cancer patients and improvements in physiological, psychological, and functional parameters can be attained with regular participation in moderate intensity exercise.

关键词： Breast cancer Exercise training Complementary Alternative Medicine Oncology VO2peak Patients reported outcomes

低温lNG安全转运智能高效装卸设备的改进设计

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机电工程技术 2024年第8期53卷 263-267页

作者：李祥宾宋吕明孙学华孙俊杰连云港市拓普科技发展有限公司江苏连云港222069 江苏海洋大学海洋工程学院江苏连云港222000

低温lNG装卸过程中存在着诸多问题,如机动性差、转运效率低、装卸压力不稳定、易结霜、易泄漏、智能化程度低等。为此,将生产效率提升需求与生产要素实际现状相结合,以智能、高效、实用为目标,通过突破自动定位对中装卸臂、变频式自增... 详细信息

低温lNG装卸过程中存在着诸多问题,如机动性差、转运效率低、装卸压力不稳定、易结霜、易泄漏、智能化程度低等。为此,将生产效率提升需求与生产要素实际现状相结合,以智能、高效、实用为目标,通过突破自动定位对中装卸臂、变频式自增压防结霜智能汽化、防泄漏、智能转运平台与云管控等关键技术,集成创新研究基于智慧管控的低温lNG移动装卸技术与装备。研发出低温lNG移动装卸全程信息智慧管控平台,实现了低温lNG装卸环节的配套装备技术升级,提升了低温lNG智能装卸装备的技术水平,为新兴清洁能源lNG市场的开拓打下了技术基础。

关键词：低温lNG装卸自动定位防泄漏智慧管控

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Impact of grain size,Pr3+ concentration and host composition on non-contact temperature sensing abilities of polyphosphate nano- and microcrystals

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Journal of Rare Earths 2019年第8期37卷 812-818,I0001页

作者： S.Gharouel l.Marciniak A.lukowiak W.Strek K.Horchani-Naifer M.Férid Research Unit of Rare Earth Materials National Research Center in Sciences of MaterialsB.P.95 Hammam-Lif2050Tunisia b Institute of Low Temperature and Structure ResearchPAS Okolna St. 50-422WroclawPoland

In this article,varied praseodymium polyphosphate hosts:MI(li,Na K)Pr(PO3)4 microcrystals and lila1-xPrx(PO3)4(x = 0.01 ^-1)nanocrystals were successfully synthesized by the flux method and the coprecipitation technique,*** size of stoichiometric nanocrystals of liPr(PO3)4 was tuned by the te mpe rature of thermal treatment in range of 35-145 *** order to dete rmine the most suitable material for the non-contact optical thermometric applications,the temperature sensing measurements were carried out by using luminescence intensity ratio(lIR)of emission bands corresponding to the ^3 P1→ ^3H5 and ^3P0→ ^3 H5 electronic transitions of Pr3+ ions into the 123-423 K temperature *** influence of the host material composition of MⅠ(li,Na,K)Pr(PO3)4 microcrystals on the sensitivity of luminescent thermometers was *** is found that the sensitivity of lithium praseodymium polyphosphate is the highest of all micropowders under ***,it is found that the nanocrystals reveal much higher relative sensitivity in respect to the microcrystalline *** highest sensitivity of lIR temperature sensing is found for liPr(PO3)4 nanocrystals(35 nm grain size)in the whole temperature range,reaching 0.283%/K at 164 *** impact of the average grain size on the sensitivity of lIR based thermometers of liPr(PO3)4 nanocrystals was *** is found that the reduction of the grain size from 145 to 35 nm results in the enhancement of the relative sensitivity from0.156 to 0.240%/K at 223 *** it is found that the high dopant concentration possesses favorable influence on the relative sensitivity of lila1-xPrx(PO3)4 nanocrystalline luminescent thermometers.

关键词： Pr^3+ Temperature sensing luminescence intensity ratio Temperature sensitivity Grain size Dopant concentration