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Low bend loss,high index,composite morphology ultra-fast laser written waveguides for photonic integrated circuits

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Light(Advanced Manufacturing) 2024年第1期5卷 50-59页

作者： Andrew Ross-adams Toney Teddy Fernandez Michael Withford Simon Gross MQ Photonics School of Mathematics and Physical SciencesMacquarie University2109Australia School of Engineering Macquarie University2109Australia

We demonstrate a novel,composite laser written 3D waveguide,fabricated in boro-aluminosilicate glass,with a refractive index contrast of 1.12×10^(−2).The waveguide is fabricated using a multi-pass approach which leverages the respective refractive index modification mechanisms of both the thermal and athermal inscription *** present the study and optimisation of inscription parameters for maximising positive refractive index change and ultimately demonstrate a dramatic advancement on the state of the art of bend losses in laser-written *** 1.0 dB cm−1 bend loss cut-off radius is reduced from 10 mm to 4 mm,at a propagation wavelength of 1550 nm.

关键词： Ultrafast laser inscription Thermal inscription Cumulative heating Athermal inscription Multi-scan Multi-pass Half-scan Bend loss High index contrast Photonic integrated circuit

Rotating machinery vibration : +from analysis to troubleshooting / +Maurice L. adams, Jr.

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电动车尾门电动推杆用低音调齿轮的开发与验证

1000年

作者： Maurice L. adams Jr.

Includes bibliographical references and index.

ISBN: (纸本)9781439807170 (hardcover : alk. paper);1439807175 (hardcover : alk. paper);9781439818701 (pbk.);1439818703 (pbk.)

Includes bibliographical references and index.

关键词： Turbomachines Rotors

来源：畅想之星图书光盘版（南... 评论

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同济大学学报（自然科学版） 2021年第S01期49卷 108-113页

作者：任亚雄 HECHT Matthias adams Christian MELZ Tobias 达姆施塔特工业大学系统可靠性、自适应结构和机械声学研究组德国达姆施塔特64287 弗劳恩霍夫结构耐用性和系统可靠性研究所德国达姆施塔特64289

高速电动机目前被广泛用于汽车自主驾驶系统。由于高速电动机采用小质量设计,因此为了使转速和输出扭矩达到目标值,通常将渐开线齿轮组和它配套使用。然而,传统的渐开线齿轮在工作中噪声较大,因此一种新型的具有不规则轮齿设计的低音调(... 详细信息

高速电动机目前被广泛用于汽车自主驾驶系统。由于高速电动机采用小质量设计,因此为了使转速和输出扭矩达到目标值,通常将渐开线齿轮组和它配套使用。然而,传统的渐开线齿轮在工作中噪声较大,因此一种新型的具有不规则轮齿设计的低音调(Low⁃Tone)齿轮被开发,以减少齿轮传动装置的噪声。通过优化算法,开发设计了一种Low⁃Tone齿轮,并应用于一个驱动电动车尾门启闭的电动推杆系统。之后在该系统运行期间,对使用Low⁃Tone齿轮和使用传统齿轮所产生的声压进行测量对比。结果表明,Low⁃Tone齿轮对于噪声有较好的抑制作用,其优势特别体现在音调特性方面。

关键词：低音调齿轮噪声降低音调特性

Effects of personalized exercise prescriptions and social media delivered through mobile health on cancer survivors’physical activity and quality of life

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Journal of Sport and Health Science 2023年第6期12卷 705-714页

作者： Zan Gao Suryeon Ryu Wanjiang Zhou Kaitlyn adams Mohamed Hassan Rui Zhang Anne Blaes Julian Wolfson Ju Sun School of Kinesiology University of MinnesotaMinneapolisMN 55455USA Department of Kinesiology Recreationand Sport StudiesThe University of TennesseeKnoxvilleTN 37996USA Department of Pharmaceutical Care&Health Systems and Institute for Health Informatics University of MinnesotaMinneapolisMN 55455USA Department of Hematology School of MedicineUniversity of MinnesotaMinneapolisMN 55455USA School of Public Health University of MinnesotaMinneapolisMN 55455USA Department of Computer Science&Engineering University of MinnesotaMinneapolisMN 55455USA

Purpose This study aimed to examine the effects of a multi-component mobile health intervention(wearable,apps,and social media)on cancer survivors’(CS')physical activity(PA),quality of life,and PA determinants compared to exercise prescription only,social media only,and attention control *** A total of 126 CS(age=60.37±7.41 years,mean±SD)were recruited from the United *** study duration was 6 months and participants were randomly placed into 4 *** participants received a Fitbit tracker and were instructed to install its companion app to monitor their daily ***(1)received previously established weekly personalized exercise prescriptions via email,(2)received weekly Facebook health education and interacted with one another,(3)received both Conditions 1 and 2,or(4)were part of the control condition,meaning they adopted usual *** PA daily steps,quality of life(i.e.,physical health and mental health),and PA determinants(e.g.,self-efficacy,social support)were measured at baseline,3 months,and 6 *** The final sample size included 123 *** results revealed only the multi-component condition had greater improvements in PA daily steps than the control condition post-intervention(95%confidence interval(95%CI):368–2951;p<0.05).Similarly,those in the multi-component condition had significantly greater increased physical health than the control condition(95%CI:–0.41 to–0.01;p<0.05)over *** addition,the social media condition had significantly greater increased perceived social support than the control condition(95%CI:0.01–0.93;p<0.05).No other significant differences on outcomes were *** The study findings suggest that the implementation of a multi-component mobile health intervention had positive effects on CS PA steps and physical ***,offering social media intervention has the potential to improve CS perceived social support.

关键词： Daily steps Exercise app Fitbit Health wearable Physical activity determinantsTagedAPTARAEnd

Simultaneous removal of ammonia and N-nitrosamine precursors from high ammonia water by zeolite and powdered activated carbon

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Journal of Environmental Sciences 2018年第2期30卷 82-91页

作者： Runmiao Xue Ariel Donovan Haiting Zhang Yinfa Ma Craig adams John Yang Bin Hua Enos Inniss Todd Eichholz Honglan Shi Department of Chemistry and Environmental Research Center Missouri University of Science and Technology RoIIa MO 65409 USA Center for Single Nanoparticle Single Cell and Single Molecule Monitoring (CS3M) Missouri University of Science and Technology RollaMO 6S409 USA Department of Civil Engineering Saint Louis University St. Louis MO 63103 USA Department of Agriculture and Environmental Sciences Lincoln University of Missouri Jefferson City MO 65101 USA Department of Civil & Environmental Engineering University of Missouri-Columbia Columbia MO 65211 USA Missouri Department of Natural Resources Jefferson City MO 65102 USA

When adding sufficient chlorine to achieve breakpoint chlorination to source water containing high concentration of ammonia during drinking water treatment, high concentrations of disinfection by-products（DBPs） may form. If N-nitrosamine precursors are present, highly toxic N-nitrosamines, primarily N-nitrosodimethylamine（NDMA）, may also form. Removing their precursors before disinfection should be a more effective way to minimize these DBPs formation. In this study, zeolites and activated carbon were examined for ammonia and N-nitrosamine precursor removal when incorporated into drinking water treatment *** test results indicate that Mordenite zeolite can remove ammonia and five of seven N-nitrosamine precursors efficiently by single step adsorption test. The practical applicability was evaluated by simulation of typical drinking water treatment processes using six-gang stirring system. The Mordenite zeolite was applied at the steps of lime softening, alum coagulation, and alum coagulation with powdered activated carbon（PAC） sorption. While the lime softening process resulted in poor zeolite performance, alum coagulation did not impact ammonia and N-nitrosamine precursor removal. During alum coagulation, more than67% ammonia and 70%–100% N-nitrosamine precursors were removed by Mordenite zeolite（except 3-（dimethylaminomethyl）indole（DMAI） and 4-dimethylaminoantipyrine（DMAP））. PAC effectively removed DMAI and DMAP when added during alum coagulation. A combination of the zeolite and PAC selected efficiently removed ammonia and all tested seven N-nitrosamine precursors（dimethylamine（DMA）, ethylmethylamine（EMA）, diethylamine（DEA）, dipropylamine（DPA）, trimethylamine（TMA）, DMAP, and DMAI） during the alum coagulation process.

关键词： Disinfection by-products Drinking water treatment Ammonia removal by zeolite N-nitrosodimethylamine(NDMA) N-nitrosamines N-nitrosamine precursor removal by zeolite and powdered activated carbon

Photo-polymerization using quantum dots for stable epoxy coatings

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Industrial Chemistry & Materials

Industrial Chemistry & Materials 2024年第4期2卷 644-650页

作者： Keroles B.Riad M.Reza Kholghy Paula M.Wood-adams Energy and Particle Technology Laboratory Department of Mechanical and Aerospace EngineeringCarleton University1125 Colonel By DrOttawaOntarioK1S 5B6Canada Faculty of Science and Engineering University of Northern British Columbia3333 University WayPrince GeorgeBCV2N 4Z9Canada

Photo-polymerization is at the foundation of many industries such as dentistry,coatings,adhesives,and stereolithography 3D ***,the organic cationic photo-initiators currently used are toxic,expensive,and difficult to tune with respect to the wavelength of light required to initiate polymerization *** example,current stereolithography 3D printing resins are unstable under ***,we demonstrate that less expensive and non-toxic titania quantum dots made via the scalable flame spray pyrolysis technology can photo-polymerize epoxy when exposed to UVC(not present in sunlight on Earth),while being insensitive to UVA(present in natural sunlight on Earth)leading to resins that are photo-stable during end *** use NMR and FTIR to demonstrate that photo-polymerization is catalyzed under UVC but not UVA,and nanoindentation to monitor the mechanical stability of epoxy films during postpolymerization UVA *** approach allows precise control over the wavelengths of light under which photo-polymerization can and cannot occur,and is also transferable to other photo-catalytic reactions.

关键词： Polymers Photo-polymerization Catalysis Quantum dots Nanotechnology

The Colonel＇s China Recipe

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China International Business 2008年第11期 32-34页

作者： MARTIN adams

KFC helped Yum! Brands conquer China, but can the fast-food giant sustain its startling growth？

关键词：中国肯德基快餐企业发展

Digital Social and Emotional Literacy Intervention for Vulnerable Children in Brazil:Participants’Experiences

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International Journal of Mental Health Promotion 2022年第1期24卷 51-67页

作者： Louise Freeland Michelle O’Reilly Juliana Fleury Sarah adams Panos Vostanis Department Neuroscience Psychology and BehaviourUniversity of LeicesterLeicesterLE17RHUK Department of Sociology University of LeicesterLeicesterLE17RHUK Associação pela Saúde Emocional de Crianças(ASEC) São Paulo01000Brazil Department of Education University of LeicesterLeicesterLE17RHUK

Social emotional literacy(SEL)interventions are widely implemented through schools,with growing evidence for a range of positive child ***,such interventions are delivered on online *** date,there is limited evidence about digital SEL interventions in low-and middle-income countries(LMIC).The aim of this study was to explore the perceptions and experiences of children,parents and facilitator of the potential value of addressing SEL via tailored digital *** intervention was designed to help children,in Brazil,to cope during the first COVID-19 pandemic *** intervention was delivered via a digital platform to groups of three children for 45 min per week for *** children,nine parents and nine facilitators were interviewed following the completion of the *** data was analysed through a codebook thematic approach,which led to three themes:empowerment,participatory aspects of the intervention and digital ***,children’s SEL development was reported to be supported during the COVID-19 pandemic,by the application of new skills outside the *** reported a number of empowering factors such as being heard and belonging.A range of useful participatory tools were identified including storytelling,games,drawings and *** SEL interventions involving both face-to-face and web-based facilitation could be developed within a tiered model of universal mental health promotion and targeted *** to online platforms would increase reach to large numbers of children in LMIC,especially in contexts of disadvantage.

关键词： Child social emotional literacy intervention digital low-and middle-income countries

Structural confirmation of sulconazole sulfoxide as the primary degradation product of sulconazole nitrate

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Journal of Pharmaceutical Analysis 2018年第2期8卷 96-102页

作者： Qun Xu Ashraf Khan Di Gao Kristie M.adams Fatkhulla Tadjimukhamedov Shane Tan John T.Simpson Compendial Development Laboratory United States Pharmacopeia

Sulconazole has been reported to degrade into sulconazole sulfoxide via sulfur oxidation; however,structural characterization data was lacking and the potential formation of an N-oxide or sulfone could not be excluded. To clarify the degradation pathways and incorporate the impurity profile of sulconazole into the United States Pharmacopeia–National Formulary(USP–NF) monographs, a multifaceted approach was utilized to confirm the identity of the degradant. The approach combines stress testing of sulconazole nitrate, chemical synthesis of the degradant via a hydrogen peroxide-mediated oxidation reaction,semi-preparative HPLC purification, and structural elucidation by LC–MS/MS and NMR *** determination was primarily based on the comparison of spectroscopic data of sulconazole and the oxidative degradant. The mass spectrometric data have revealed a Mc Lafferty-type rearrangement as the characteristic fragmentation pathway for alkyl sulfoxides with a β-hydrogen atom, and was used to distinguish the sulfoxide from N-oxide or sulfone derivatives. Moreover, the generated sulconazole sulfoxide was utilized as reference material for compendial procedure development and validation, which provides support for USP monograph modernization.

关键词： Sulconazole nitrate Sulconazole sulfoxide Forced degradation Structural characterization LC–MS/MS