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Yb∶Y_3Al_5O_(12)/Y_3Al_5O_(12)复合晶体的制作和光谱性能

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光学学报 2008年第2期28卷 316-320页

作者：王静雅王晓丹赵志伟徐军 gilbert Bourdet Je-c.chanteloup 中国科学院上海光学精密机械研究所上海201800 中国科学院研究生院北京100049 Ecole Polytechnique Laboratoire pour l-Utilisation des Lasers IntensesRoute de SaclayPalaiseau91128 France

采用热键合技术,制作中运用不同的工艺参量制作出12片Yb∶Y3Al5O12/Y3Al5O12(Yb∶YAG/YAG)复合晶体。利用偏光显微镜对其键合界面进行了观察,研究了样品的透射光谱,从而确定出复合晶体合适的制作工艺。通过透射光谱的形状和透射率来表... 详细信息

采用热键合技术,制作中运用不同的工艺参量制作出12片Yb∶Y3Al5O12/Y3Al5O12(Yb∶YAG/YAG)复合晶体。利用偏光显微镜对其键合界面进行了观察,研究了样品的透射光谱,从而确定出复合晶体合适的制作工艺。通过透射光谱的形状和透射率来表征复合晶体键合界面的质量。研究表明Yb∶YAG/YAG复合晶体键合质量较好,可实现一体化。

关键词：光学材料复合晶体 Yb:YAG/YAG 键合质量透射光谱透射率

Experimental organic chemistry 3rd ed. /

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Phylogenetic Analysis of Brine Shrimp (Artemia) in china Using DNA Barcoding

2002年

作者： gilbert John c.

来源：畅想之星图书光盘版（南... 评论

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畅想之星图书光盘版（南通市图书馆镜像）

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Genomics,Proteomics & Bioinformatics 2008年第Z1期 155-162页

作者： Peter Bossier gilbert Van Stappen Patrick Sorgeloos Laboratory of Aquaculture & Artemia Reference center Ghent University

DNA barcoding is a powerful approach for characterizing species of organisms,especially those with almost identical morphological features,thereby helping to to establish phylogenetic relationships and reveal evolutionary histories. In this study,we chose a 648-bp segment of the mitochondrial gene,cytochrome c oxidase subunit 1 (cOI),as a standard barcode region to establish phylogenetic relation-ships among brine shrimp (Artemia) species from major habitats around the world and further focused on the biodiversity of Artemia species in china,especially in the Tibetan Plateau. Samples from five major salt lakes of the Tibetan Plateau located at altitudes over 4,000 m showed clear differences from other Artemia pop-ulations in china. We also observed two consistent amino acid changes,153A/V and 183L/F,in the cOI gene between the high and low altitude species in china. Moreover,indels in the cOI sequence were identified in cyst and adult samples unique to the co Qen population from the Tibetan Plateau,demonstrating the need for additional investigations of the mitochondrial genome among Tibetan Artemia populations.

关键词： Artemia DNA barcoding molecular phylogeny Tibetan Plateau

Assessing consumer Acceptability of composite cassava (<i>Manihot esculenta</i>) Bread

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Food and Nutrition Sciences 2020年第11期11卷 990-1002页

作者： gilbert Owiah Sampson Faculty of Vocational Education University of Education Winneba Kumasi Ghana

cassava has gained attention as a potential industrial crop. The roots are processed into cassava flour for bakery and confectioneries. With the ever increasingly expensive level of wheat flour import for bread production in developing countries like Ghana, the need for other highly nutritious yet readily available and less expensive source of composite flour is important. The aim of the study was to investigate consumer acceptability of bread developed from cassava flour and wheat flour. A 4 × 3 factorial design was used to develop bread samples (A = 100% wheat flour, control, B = 10% cassava flour + 90% wheat flour, C = 20% cassava flour + 80% wheat flour and D = 30% cassava flour + 70% wheat flour). Sensory evaluation was performed on the bread samples using the 9-point hedonic scale to evaluate sensory attributes like colour, gumminess, mouth-feel, taste, flavour, and overall acceptability. The proximate compositions of the products were also evaluated using the A. O. A. C (2005) official methods. Statistically, there was significant

Epidemiology and natural history of hepatitis c virus infection

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World Journal of Gastroenterology 2014年第28期20卷 9270-9280页

作者： Mei-Hsuan Lee Hwai-I Yang Yong Yuan gilbert L’Italien chien-Jen chen the Institute of clinical Medicine National Yang-Ming University the Genomics Research center Academia Sinica the Graduate Institute of clinical Medical Science China Medical University the Molecular and Genomic Epidemiology center China Medical University Hospital the Global Health Economics and Outcomes Research Bristol-Myers SquibbPrincetonNJ 08543United States the Yale University School of Medicine the Graduate Institute of Epidemiology and Preventive Medicine College of Public HealthNational Taiwan University

Hepatitis c virus(HcV)affects 130-210 million people worldwide and is one of the major risk factors for hepatocellular ***,at least one third of hepatocellular carcinoma cases are attributed to HcV infection,and 350000 people died from HcV related diseases per *** is a great geographical variation of HcV infection globally,with risk factors for the HcV infection differing in various *** progression of chronic hepatitis c to end-stage liver disease also varies in different study populations.A long-term follow-up cohort enrolling participants with asymptomatic HcV infection is essential for elucidating the natural history of HcV-caused hepatocellular carcinoma,and for exploring potential seromarkers that have high predictability for risk of hepatocellular ***,prospective cohorts comprising individuals with HcV infection are still *** risk evaluation of viral load elevation and associated liver disease/cancer in HcV(REVEAL-HcV)study has followed a cohort of 1095 residents seropositive for antibodies against hepatitis c virus living in seven townships in Taiwan for more than fifteen *** of them have acquired HcV infection through iatrogenic transmission *** the participants in the REVEALHcV study rarely receive antiviral therapies,it provides a unique opportunity to study the natural history of chronic HcV *** this review,the prevalence,risk factors and natural history of HcV infection are comprehensively *** study cohort,data collection,and findings on liver disease progression of the REVEAL-HcV study are described.

关键词： Hepatitis c virus Epidemiology Risk evaluation of viral load elevation and associated liver disease/cancer Long-term liver progression

community knowledge,attitudes and practices related to schistosomiasis and associated healthcare-seeking behaviours in northern côte d’Ivoire and southern Mauritania

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Infectious Diseases of Poverty 2018年第1期7卷 691-703页

作者： Amoin Jeanne d’Arc Koffi Mohamed Doumbia gilbert Fokou Moussa Keita Brama Kone N’doumy Noel Abe Department of Research and Development Centre Suisse de Recherches Scientifiques en Cote d’IvoireAbidjanCote d’Ivoire Environment and communication Training Unit University Alassane OuattaraBouakeCote d’Ivoire Ethno-Sociology Institute University Felix Houphouet-BoignyAbidjanCote d’Ivoire Faculty of Letters and Social Sciences University of NouakchottNouakchottMauritania University Peleforo-Gbon-coulibaly KorhogoCote d’Ivoire

Background:Among parasitic infections,schistosomiasis ranks second after malaria in terms of worldwide *** efforts to contain transmission,more than 230 million people are infected,of which 85%live in Sub-Saharan *** the epidemiologic characteristics of schistosomiasis have been extensively studied across endemic settings,social factors have been paid less *** current study assesses community knowledge of schistosomiasis causes,transmission,signs,symptoms and prevention,as well as healthcare-seeking behaviours in two West African settings,with the aim of strengthening schistosomiasis control ***:From August 2014 to June 2015,we conducted two cross-sectional surveys in Korhogo,cote d’Ivoire and Kaedi,*** applied a questionnaire to collect quantitative data at the household level in Korhogo(n=1456)and Kaedi(n=1453).Focus group discussions(Korhogo:n=32,Kaedi:n=32)and participatory photography(photovoice)(Korhogo:n=16,Kaedi:n=16)were conducted within the communities to gather qualitative *** addition,semi-structured interviews were used to discuss with key informants from control programmes,nongovernmental organizations and health districts(Korhogo:n=8,Kaedi:n=7).Results:The study demonstrated that schistosomiasis is not well known by the communities;64.1%claimed to know the causes of the disease,but the reality is *** knowledge is more from cultural than biomedical *** was observed that social construction of the disease is different from the biomedical *** Korhogo,schistosomiasis was often associated with several other diseases,notably stomach ulcer and *** populations believe that schistosomiasis is caused by exposure to goat or dog urine in the *** Kaedi,schistosomiasis is considered as a disease transmitted by environmenal elements such as sunshine and dirty *** both settings,the care-seeking pathways were found to be strongly influenced by local c

关键词： community knowledge Healthcare-seeking behaviour Schistosomiasis Korhogo Kaedi côte d’Ivoire Mauritania

Modelling HIV/AIDS cases in Zambia: A comparative Study of the Impact of Mandatory HIV Testing

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Open Journal of Statistics 2021年第3期11卷 409-419页

作者： Edwin Moyo James c. Shakalima gilbert chambashi James Muchinga Levy K. Matindih Department of Science and Mathematics Mulungushi University Kabwe Zambia School of Business Studies Unicaf University Lusaka Zambia Department of Natural Sciences Levy Mwanawasa University Lusaka Zambia

In this study, a time series modeling approach is used to determine an ARIMA model and advance counterfactual forecasting at a point of policy intervention. We consider monthly data of HIV/AIDS cases from the Ministry of Health (Copperbelt province) of Zambia, for the period 2010 to 2019 and have a total of 120 observations. Results indicate that ARIMA (1, 0, 0) is an adequate model which best fits the HIV/AIDS time series data and is, therefore, suitable for forecasting cases. The model predicts a reduction from an average of 3500 to 3177 representing 14.29% in HIV/AIDS cases from 2017 (year of policy activation) to 2019, but the actual recorded cases dropped from 3500 to 1514 accounting for 57.4% in the same time frame.

关键词： counterfactual Forecasting Box-Jenkins Methodology ARIMA Model Auto-correlation Function Partial Autocorrelation Function

Yb掺杂原子数分数为0.5%的Yb∶Y_3Al_5O_(12)晶体的光谱分析

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中国激光 2006年第5期33卷 692-696页

作者：王晓丹赵志伟徐晓东宋平新姜本学徐军邓佩珍 gilbert Bourdet J.-c.chanteloup 中国科学院上海光学精密机械研究所 Ecole Polytechnique Laboratoire pour l'Utilisation des Lasers IntensesPalaiseau 91128France Ecole Polytechnique Laboratoire pour l’Utilisation des Lasers IntensesPalaiseau 91128France

采用提拉法生长了Yb掺杂原子数分数为0.5%的Yb∶Y3Al5O12(Yb∶YAG)晶体,对晶体的吸收光谱和荧光光谱进行了分析。与Yb掺杂原子数分数为5%的Yb∶YAG晶体进行了对比,得出采用940 nm激光二极管(LD)抽运晶体最为合适。原子数分数为0.5%的Yb... 详细信息

采用提拉法生长了Yb掺杂原子数分数为0.5%的Yb∶Y3Al5O12(Yb∶YAG)晶体,对晶体的吸收光谱和荧光光谱进行了分析。与Yb掺杂原子数分数为5%的Yb∶YAG晶体进行了对比,得出采用940 nm激光二极管(LD)抽运晶体最为合适。原子数分数为0.5%的Yb∶YAG晶体相对于原子数分数为5%的Yb∶YAG晶体自吸收效应的影响要小。测量了原子数分数为0.5%的Yb∶YAG晶体的荧光寿命为0.95 ms,与理论值很接近。因此采用原子数分数为0.5%的Yb∶YAG晶体作为激光工作物质将有利于高效、小型集成化的固体激光器的发展。

关键词：材料光谱 Yb:YAG晶体吸收光谱荧光光谱自吸收荧光寿命

不同Yb掺质浓度的Yb:Y_3Al_5O_(12)晶体激光性能的比较

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人工晶体学报 2006年第2期35卷 322-326页

作者：王晓丹赵志伟徐晓东宋平新姜本学徐军邓佩珍 gilbert Bourdet J.c.chanteloup 中国科学院上海光学精密机械研究所 Ecole Polytechnique Laboratoire Pourl' Utilisation des Lasers Intenses Routede Saclay Palaiseau 91128 France

采用提拉法生长了Yb3+掺质浓度为5%原子分数、50%原子分数和100%原子分数的Yb:Y3A l5O12(Yb:YAG)晶体,系统地分析了不同Yb3+掺质浓度晶体的吸收光谱和荧光光谱。从吸收峰和吸收系数可以看出采用940nm LD泵浦三种不同浓度的Yb:YAG晶体都... 详细信息

采用提拉法生长了Yb3+掺质浓度为5%原子分数、50%原子分数和100%原子分数的Yb:Y3A l5O12(Yb:YAG)晶体,系统地分析了不同Yb3+掺质浓度晶体的吸收光谱和荧光光谱。从吸收峰和吸收系数可以看出采用940nm LD泵浦三种不同浓度的Yb:YAG晶体都比较合适。随着Yb3+离子掺质浓度的增高,晶体中出现的自吸收现象越为明显。通过对三种不同Yb掺质浓度晶体激光性能参数的计算,得出高掺质浓度Yb:YAG和YbAG晶体是有前景的激光增益介质。

关键词： Yb:YAG 吸收光谱荧光光谱自吸收最小泵浦功率密度