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肥育猪的理想氨基酸比率

国外畜牧学（猪与禽） 2001年第6期21卷 8-10页

作者：陈静雯 Ioannis Mavromichalis KevinR cera 美国SCA营养公司美国Akey公司

NRC以前的工作对实验证据进行了总结并且发表了肥育猪的氨基酸对赖氨酸的理想比率。本文研究了 1 997年以来发表的资料。

关键词：猪肥育氨基酸比率低蛋白饲料

Photonic properties of novel Yb3＋ doped germanium-lead oxyfluoride glass-ceramics for laser cooling applications

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Frontiers of Optoelectronics 2018年第2期11卷 189-198页

作者： Lauro j. Q. MAIA j.othis THOMAS Yannick LEDEMI Kummara V. KRISHNAIAH Denis SELETSKIY Younes MESSADDEQ Raman KASHYAP Instituto de Fisica Universidade Federal de Goias Av. Esperanga 1533 Campus Samambaia Goiania GO 74690-900 Brazil Department of Electrical Engineering Ecole Polytechnique de Montrral P.O. Box 6079 Station Centre-ville Montreal QC H3C 3A7 Canada Department of Engineering Physics Ecole Polytechnique de Montrral P.O. Box 6079 Station Centre-ville Montreal QC H3C 3A7 Canada Centre d'Optique Photonique et Laser 2375 Rue de la Terrasse Universite Laval Qurbec QC G1V 0A6 Canada

Abstract In recent years, our research group has developed and studied new rare-earth doped materials for the promising technology of solid-state laser cooling, which is based on anti-stokes fluorescence. To the best of our knowledge, our group is the only one in Canada leading the research into the properties of nanoparticles, glasses and glass-ceramics for optical refrigeration appli- cations. In the present work, optical properties of 50GeO2- 30PbF2-18PbO-2YbF3 glass-ceramics for laser cooling are presented and discussed as a function of crystallization temperature. Spectroscopic results show that samples have near infrared photoluminescence emission due to the 2F5/2 - 2F7/2 Yb3＋ transition, centered at -1016 nm with an excitation wavelength of 920 nm or 1011 nm, and the highest photoluminescence emission efficiency occurs for heat-treatment for 5 h at 350℃. The internal photolumi- nescence quantum yield varies between 99% and 80%, depending on the temperature of heat-treatment, being the most efficient under 1011 nm excitation. The 2F5/2 lifetime increases from 1.472 to 1.970 ms for heat treatments at 330℃ to 350℃, respectively, due to energy trapping and the low phonon energy of the nanocrystals. The sample temperature dependence was measured with a fiber Bragg grating sensor, as a function of input pump laser wavelength and processing temperature. These measure- ments show that the heating process approaches near zero for an excitation wavelength between 1020 and 1030 nm, which is an indication that phonons are removed effectivelly from the glass-ceramic materials, and they can be used for optical laser cooling applications. On theother hand, the temperature increase as a function of input laser power into samples remains constant between 920 and 980 nm wavelength excitation, a temperature variation of 36 K/W （temperature of 58℃/W） was attained under excitation at 950 nm, showing a possible use for biomedical applications to be explored.

关键词： optical refrigeration oxyfluoride glass-cera-mics Yb3+ doping quantum yield infrared emission lifetime

DNA damage, NF-κB and accelerated aging

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Asian j.urnal of Andrology 2012年第6期14卷 811-812页

作者： David G Le Couteur David j.Handelsman ANZAC Medical Research Institute Sydney 2139 Australia Centre for Education and Research on Ageing (cera) Concord Hospital and University of Sydney Concord NSW 2139 Australia

The aging process is the maj.r risk factor for disease and disability yet the cel- lular mechanisms for aging are uncertain.

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The comparison of auditory behavioral and evoked potential responses (steadystate and cortical) in subj.cts with occupational noise-induced hearing loss

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j.urnal of Otology 2021年第4期16卷 242-251页

作者： P.H.Dej.nckere j.Lebacq Federal Agency for Occupational Risks Avenue de l’Astronomie1B-1210BruxellesBrusselsBelgium Institute of Neurosciences University of LouvainPasteurAvenue Mounier53B-1200BruxellesBrusselsBelgium

Obj.ctive: To define difference scores between PTA, ASSR and cera thresholds in subj.cts with occupational ***: 44 subj.cts undergoing a medico-legal expert assessment for occupational NIHL and fulfillingcriteria of reliability were considered. Assessment included: PTA, 40 Hz binaural multiple ASSR and cera(1-2-3 kHz).Results: The respective average difference scores (ASSR - PTA) for 1, 2 and 3 kHz are 13.01 (SD 10.19) dB,12.72 (SD 8.81) dB and 10.38 (SD 8.19) dB. The average (cera - ASSR) difference scores are 1.25 (SD 14.63)dB for 1 kHz (NS), 2.73 (SD 13.03) dB for 2 kHz (NS) and 4.51 (SD 12.18) dB for 3 kHz. The correlationbetween PTA and ASSR (0.82) is significantly stronger than that between PTA and cera (0.71). In a givensubj.ct, PTA thresholds are nearly always lower (i.e., better) than ASSR thresholds, whatever the frequency (1-2-3 kHz) and the side (right e left). A significant negative correlation is found between thedifference score (ASSR e PTA) and the degree of hearing ***: ASSR outperforms cera in a medicolegal context, although overestimating the behavioralthresholds by 10e13 dB.

关键词： cera ASSR NIHL Hearing thresholds Occupational

应对风险,投资长远:动荡时期的能源战略——2009年剑桥能源周暨高层年会焦点综述

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国际石油经济 2009年第3期17卷 4-7页

作者：中国石油集团参会团组中国石油集团参会团组

在金融危机爆发、世界经济衰退和国际油价从历史高位掉头直下、低位徘徊的背景下,2009年的剑桥能源周暨高层年会更为引人注目:应对经济衰退和油价下跌带来的冲击,重塑信心,保持能源行业持续发展成为2009年年会的核心内容。本届年会的议... 详细信息

在金融危机爆发、世界经济衰退和国际油价从历史高位掉头直下、低位徘徊的背景下,2009年的剑桥能源周暨高层年会更为引人注目:应对经济衰退和油价下跌带来的冲击,重塑信心,保持能源行业持续发展成为2009年年会的核心内容。本届年会的议题主要集中在世界经济与油气行业投资前景、能源效率、应对气候变化、国际合作、技术创新、人才培养、收购机遇等方面。与会代表认为:油气行业前景依旧看好,应维护公平油价,以技术创新和低成本发展应对危机;世界LNG供应形势将显著改善,北美非常规天然气开发所取得的进展将对世界市场产生重要影响,俄乌争端凸显供应多元化在天然气安全中的重要性;油气并购价值已开始显现,预计并购活动可能在2009年年底逐步升温;从长期看,金融危机和经济衰退不会对世界炼油工业发展造成大的影响,但已出现的几个新趋势值得关注;各国政府和企业应高度重视并采取可行措施,应对温室气体排放和全球气候变化。

关键词：剑桥能源高层年会油气行业危机应对油价投资技术创新能源战略

Water requirements and single and dual crop coefficients of sugarcane grown in a tropical region, Brazil

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Agricultural Sciences 2012年第2期

作者： Vicente de P. R. da Silva Cícera j. R. Borges Carlos H. A. Farias Vij.y P. Singh Walker G. Albuquerque Bernardo Barbosa da Silva

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Eye and Vision 2019年第1期6卷 322-330页

作者： Ke Cao Sruj.na Sahebj.da Andrea j.Richardson Paul N.Baird Centre for Eye Research Australia Royal Victorian Eye and Ear HospitalMelbourneAustralia. Department of Surgery OphthalmologyThe University of Melbourne32 Gisborne StreetEast MelbourneVIC 3000Australia

Background:Keratoconus(KC)is a common corneal condition with an unknown gender *** numerous studies have investigated the genetic component of KC,no specific genes have yet been attributed to the *** recently reported posterior segment changes occurring in the eyes of KC ***,it is not clear whether these changes are part of KC pathogenesis or reflect changes in anatomical features of the eye manifested by changes at the *** retinal changes represent the main characteristics observed in agerelated macular degeneration(AMD)and that pleiotropy has been demonstrated between different eye diseases,we wished to assess if known AMD associated genes were also associated with ***:A total of 248 KC subj.cts and 366 non-KC(control)subj.cts were recruited from public and private clinics in Melbourne for this *** single nucleotide polymorphisms(SNPs)previously associated with AMD,including rs10490924(ARMS2/HTRA1),rs10737680(CFH),rs13278062(TNFRSF10A),rs1864163(CETP),rs2230199(C3),rs3130783(IER3/DDR1),rs334353(TGFBR1),rs3812111(COL10A1),rs429608(C2/CFB),rs4420638(APOE),rs4698775(CFI),rs5749482(TIMP3),rs6795735(ADAMTS9),rs8017304(RAD51B),rs8135665(SLC16A8),rs920915(LIPC),rs943080(VEGFA),rs9542236(B3GALTL)and rs13081855(COL8A1/FILIP1L),were genotyped in this *** regression was applied to evaluate the association between these SNPs and KC on both genders together,as well as each gender *** regression was also applied to assess the association between SNPs and corneal *** correction was applied to adj.st for multiple ***:Genotyping data were available for 18 *** SNP,rs6795735(ADAMTS9)was significantly associated with KC(p=3.5×10−4)when both genders were assessed,whereas rs5749482(TIMP3)was only associated in males(p=7.7×10−4)following Bonferroni multiple ***,when the covariates of age and gender were included,the associations became non-sign

关键词： Keratoconus Gender Genetic Age-related macular degeneration

Obj.ctive frequency-specific hearing thresholds definition for medicolegal purposes in case of occupational NIHL: ASSR outperforms cera

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j.urnal of Otology 2021年第4期16卷 210-219页

作者： P.H.Dej.nckere B.Millet R.Van Gool A.Martens j.Lebacq Federal Agency for Occupational Risks BrusselsBelgium Institute of Neurosciences University of LouvainBrusselsBelgium

Audiological use of the 40 Hz-ASSR (auditory steady state responses) could be valuable for obj.ctivelyestimating the frequency-specific threshold in adults undergoing an expertise examination for medicolegal and/or compensation purposes. The present prospective study was set up to clarify the relationship between the thresholds obtained by cortical evoked response audiometry (cera) and by 40 HzASSR, in the same ears, within a large homogeneous sample of 164 subj.cts (328 ears) with NIHL andwell documented exposure to noise. All these subj.cts claimed financial compensation for occupationalNIHL, and there was a suspicion of exaggeration of the reported NIHLs. ASSR thresholds show a goodcorrelation with the cera thresholds. However, a systematic shift is noticed, ASSR thresholds being onaverage (1e2 e 3 kHz) 4.38 dB lower (i.e. showing less hearing loss) than cera thresholds. Moreover, thebinaural multiple ASSR technique allows a considerable time gain when compared to the cera.

关键词： Obj.ctive audiometry cera ASSR NIHL Medicolegal

Conversion of Rapid Prototyping Models into Metallic Tools by ceramic Moulding—an Indirect Rapid Tooling Process

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厦门大学学报(自然科学版) 2002年第S1期41卷 218-218页

作者： Teresa P DUARTE j.M FERREIRA F j.rge LINO A BARBEDO Rui NETO FEUP-Faculdade de Engenharia da Universidade do Porto DEMEGI-Departamento de Engenharia Mecanica e Gestāo IndustrialPortugal Departamento de Engenharia Cermica e do Vidro CICECOUniversidade de AveiroPortugal INEGI-Instituto de Engenharia Mecanica e Gestāo Industrial CETECOFF-Fundicāo e Novas TecnologiasPortugal

A process to convert models made by rapid prototypi ng techniques like SL(stereolitography)and LOM(laminated obj.ct manufacturing)or by conventional techniques(silicones,resins,wax,etc.)into metallic mould s or tools has been *** main purpose of this technique is to rapidly obtain the first prototypes of parts,for plastics inj.ction,forging or any oth er manufacturing process using the tools produced by casting a metal into a cera mic ***,it can be said that the ceramic moulds are produced by mixing in variab le proportions,depending on the type of ceramics employed,strength and roughne ss desired,a ceramic mixture composed by alumina and/or zirconium silicates bon ded with silica coming from a liquid binder,based on ethyl silicate.A catalyst is added to the slurry in order to produce a sol-gel *** liquid slur ry is poured into the box containing the mould to be *** a short p eriod of time,controlled by the amount of gelling agent,the ceramic mixture ac quires a rubber *** pattern is removed from the ceramic mould,whic h is fired to stop the gelation *** this stabilization the ceramic m ould is sintered at high temperatures in order to generate an inert mould wi th the desired strength in which almost all metallic alloys can be *** effect of ceramic materials(shape,granulometric distribution,chemical com position,etc.),processing parameters(proportion binder/ceramic/catalyst,sint ering conditions,etc.)and casting conditions(mould pre-heating temperature a nd pouring temperature)were studied in order to obtain metallic moulds or tools with tailored properties(high dimensional accuracy,low roughness and high mec hanical strength).

关键词： Conversion of Rapid Prototyping Models into Metallic Tools by ceramic Moulding an Indirect Rapid Tooling Process