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Coupling virio-and bacterioplankton populations with environmental variable changes in the Bohai sea

Acta Oceanologica sinica 2020年第6期39卷 72-83页

作者： Caixia Wang Lin Wu Yibo Wang james s.paterson james G.Mitchell Xiaoke Hu Key Laboratory of Coastal Biology and Bioresource Utilization Yantai Institute of Coastal Zone ResearchChinese Academy of SciencesYantai 264003China Laboratory for Marine Biology and Biotechnology Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China University of Chinese Academy of sciences Beijing 100049China Ocean school Yantai UniversityYantai 264003China College of science and Engineering Flinders UniversityAdelaideSA 5001Australia

Uncovering the role of environmental factors and finding critical factors which harbor significant fractions in governing microbial communities remain key questions in coastal marine *** detect the interactions between environmental factors and distributions of virio-and bacterioplankton in trophic coastal areas,we used flow cytometry to investigate the abundance of virio-and bacterioplankton covering 31 stations in the Bohai sea of *** results suggested that the average abundance of total virus(TV)in winter(~2.29×108 particles/mL)was slightly lower than in summer(~3.83×108 particles/mL).The mean total bacterial abundance(TB)was much lower in winter(~2.54×107 particles/mL)than in summer(~5.43×107 particles/mL).Correlation analysis via redundancy analysis(RDA)and network analysis among virioplankton,bacterioplankton and environmental factors revealed that the abundances of viral and bacterial subpopulations depend on environmental *** winter,only temperature significantly influenced the abundances of virio-and *** summer,in addition to temperature,both salinity and nutrient(siO2)had a remarkable impact on the distribution of virioand *** results showed a clear seasonal and trophic pattern throughout the whole water system,which revealed that temperature and eutrophication may play crucial roles in microbial distribution pattern.

关键词： virioplankton bacterioplankton flow cytometry network Bohai sea

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Glass transition temperature prediction of disordered molecular solids

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npj Computational Materials 2021年第1期7卷 1633-1639页

作者： Kun-Han Lin Leanne paterson Falk May Denis Andrienko Max Planck Institute for Polymer Research Ackermannweg 1055128 MainzGermany Merck KGaA 64293 DarmstadtGermany

Glass transition temperature,Tg,is the key quantity for assessing morphological stability and molecular ordering of films of organic semiconductors.A reliable prediction of Tg from the chemical structure is,however,challenging,as it is sensitive to both molecular interactions and analysis of the heating or cooling *** combining a fitting protocol with an automated workflow for forcefield parameterization,we predict Tg with a mean absolute error of~20℃for a set of organic compounds with Tg in the 50–230℃*** study establishes a reliable and automated prescreening procedure for the design of amorphous organic semiconductors,essential for the optimization and development of organic light-emitting diodes.

关键词： automated prediction transition

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A review of progress on nano-aperture VCsEL Invited Paper

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Chinese Optics Letters 2008年第10期6卷 748-754页

作者： sonny Vo james s.Harris solid state and Photonics Laboratory Stanford UniversityStanfordCalifornia94305USA

This paper reviews the progress on nano-aperture vertical-cavity surface-emitting lasers （VCsELs）. The design, fabrication, and polarization control of nano-aperture VCsELs are reviewed. With the nanoaperture evolving from conventional circular and square aperture to unique C-shaped, H-shaped, I-shaped, and bowtie-shaped aperture, both the near-field intensity and near-field beam confinement from nanoaperture VCsELs are significantly improved. As a high-intensity compact light source with sub-100- nm spot size, nano-aperture VCsELs are promising to realize many new near-field optical systems and applications.

关键词： VCsEL view A review of progress on nano-aperture VCsEL Invited Paper

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Abiotic and biotic constituents of oil sands process-affected waters

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Journal of Environmental sciences 2023年第5期127卷 169-186页

作者： Nora A.s.Hussain james L.stafford Department of Biological sciences University of AlbertaEdmontonAlberta T6G 2N8Canada

The oil sands in Northern Alberta are the largest oil sands in the world,providing an important economic resource for the Canadian energy *** extraction of petroleum in the oil sands begins with the addition of hot water to the bituminous sediment,generating oil sands process-affected water(OsPW),which is acutely toxic to *** of litres of OsPW are stored on oil sands mining leased sites in man-made reservoirs called tailings *** the volume of OsPW increases,concerns arise regarding the reclamation and eventual release of this water back into the *** is composed of a complex and heterogeneous mix of components that vary based on factors such as company extraction techniques,age of the water,location,and bitumen ore ***,the effective remediation of OsPW requires the consideration of abiotic and biotic constituents within it to understand short and long term effects of treatments *** review summarizes selected chemicals and organisms in these waters and their interactions to provide a holistic perspective on the physiochemical and microbial dynamics underpinning OsPW.

关键词： OsPW toxicants Reclamation Tailings ponds Remediation Microbial AOPs Bioremediation

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Current recommendations of managing HBV infection in preconception or pregnancy

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Frontiers of Medicine 2014年第2期8卷 158-165页

作者： james s. Park Calvin Pan Division of Gastroenterology Department of Medicine NYU Langone Medical Center NYU School of Medicine New York 10016 USA

Hepatitis B remains a leading cause of cirrhosis, hepatocellular carcinoma and liver transplantation worldwide. Management of chronic hepatitis B during pregnancy is challenging. Transmission of hepatitis B to infants still occurs perinataily although immunoprophylaxis is widely available for infants born to mothers with chronic hepatitis B infection. The emerging data suggest that initiation of antiviral therapy in the beginning of the third trimester in highly viremic mothers can prevent immunoprophylaxis failure in their infants. The available drug safety data show that lamivudine, telbivudine and tenofovir are generally safe to be used during the pregnancy. In order to minimize the fetal exposure to the antiviral medication, antiviral therapy during the pregnancy should be limited to a selected group of patients with cirrhosis, high hepatitis B viral load, or prior history immunoprophylaxis failure. An elective Caesarean section may reduce the risk of perinatal transmission. For those females planning for pregnancy or in early stage of pregnancy, communication and follow-up among obstetrician, gastroenterologist, and primary care physician are important. In this article, we will review the features of hepatitis B infection before, during and after the pregnancy; the risk factors that increase mother-tochild transmission; safety data on antiviral drug use during pregnancy; and the potential role of Caesarean section in selected cases.

关键词： antiviral therapy Caesarean section cirrhosis hepatitis B irnmunoprophylaxis mother-to-child transmission pregnancy prevention

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Exploring the impact of COVID-19 on the movement behaviors of children and youth:A scoping review of evidence after the first year

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Journal of sport and Health science 2021年第6期10卷 675-689页

作者： Derek C.paterson Katelynn Ramage sarah A.Moore Negin Riazi Mark s.Tremblay Guy Faulkner school of Kinesiology Faculty of EducationUniversity of British ColumbiaVancouverBritish Columbia V6T 1Z4Canada school of Health and Human Performance Dalhousie UniversityHalifaxNova Scotia B3H 4R2Canada Children’s Hospital of Eastern Ontario Research Institute OttawaOntario K1H 5B2Canada Department of Pediatrics University of OttawaOttawaOntario K1N 6N5Canada

Purpose:The objective of this scoping review was to summarize systematically the available literature investigating the relationships between the coronavirus disease 2019(COVID-19)pandemic and movement behaviors(physical activity,sedentary behavior,and sleep)of school-aged children(aged 511 years)and youth(aged 1217 years)in the first year of the COVID-19 ***:searches for published literature were conducted across 6 databases on 2 separate search dates(November 25,2020,and January 27,2021).Results were screened and extracted by 2 reviewers(DCP and KR)independently,using *** numeric analysis and content analysis were undertaken to present thematically the findings of included studies according to the associated impact on each movement ***:A total of 1486 records were extracted from database searches;of those,150 met inclusion criteria and were included for *** 150 articles,110 were empirical studies examining physical activity(n=77),sedentary behavior/screen time(n=58),and sleep(n=55).Results consistently reported declines in physical-activity time,increases in screen time and total sedentary behavior,shifts to later bed and wake times,and increases in sleep *** reported impacts on movement behaviors were greater for youth than for ***:The COVID-19 pandemic is related to changes in the quantity and nature of physical activity,sedentary behavior,and sleep among children and *** is an urgent need for policy makers,practitioners,and researchers to develop solutions for attenuating adverse changes in physical activity and screen time among children and youth.

关键词： Pandemic Physical activity screen time sedentary sleep

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Fiber-integrated Brillouin microspectroscopy:Towards Brillouin endoscopy

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Journal of Innovative Optical Health sciences 2017年第6期10卷 17-25页

作者： Irina V.Kabakova YuChen Xiang Carl paterson Peter Torok Blackett Laboratory Imperial College London Prince Consort Road SW72AZLondonUK

Brillouin imaging(BI)for micromechanical characterization of tisues and biomaterials is a fast-developing field of research with a strong potential for medical diagnosis of disease-modified tissues and *** the principles of BI imply its compatibility with in vivo and in situ measurements,the integntion of BI with a flexible catheter,capable of reaching the region of interest within the body,is yet to be ***,for the first time,we experimentally investigate integration of the Brillouin spectroscope with standard optical fber components to achieve a Brillouin *** performance of single-fiber and dual-fiber endoscopes are demonstrated and *** show that a major challenge in construction of Bri louin endoscopes is the strong backward Brillouin scattering in the optical fiber and we present a dual-fiber geometry as a possible *** of Brillouin spectra in test liquids(water,ethanol and glyoerol)ane demonstrated using the dual-fiber endoscope and its performance is analyzed numerically with the help of a beam propagation model.

关键词： Brillouin imaging fiber integration endoscope

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Implicit Continuous User Authentication for Mobile Devices based on Deep Reinforcement Learning

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Computer systems science & Engineering 2023年第2期44卷 1357-1372页

作者： Christy james Jose M.s.Rajasree Government Engineering College Idukki685603India APJ Abdul Kalam Technological University Thiruvananthapuram695016India

The predominant method for smart phone accessing is conﬁned to methods directing the authentication by means of Point-of-Entry that heavily depend on physiological biometrics like,ﬁngerprint or *** continuous authentication initiating to be loftier to conventional authentication mechanisms by continuously conﬁrming users’identities on continuing basis and mark the instant at which an illegitimate hacker grasps dominance of the ***,divergent issues remain *** research aims to investigate the power of Deep Reinforcement Learning technique to implicit continuous authentication for mobile devices using a method called,Gaussian Weighted Cauchy Kriging-based Continuous Czekanowski’s(GWCK-CC).First,a Gaussian Weighted Non-local Mean Filter Preprocessing model is applied for reducing the noise pre-sent in the raw input face *** Kriging Regression function is employed to reduce the ***,Continuous Czekanowski’s Clas-siﬁcation is utilized for proﬁcient classiﬁcation between the genuine user and *** this way,the proposed GWCK-CC method achieves accurate authen-tication with minimum error rate and *** assessment of the pro-posed GWCK-CC method and existing methods are carried out with different factors by using UMDAA-02 Face *** results conﬁrm that the proposed GWCK-CC method enhances authentication accuracy,by 9%,reduces the authen-tication time,and error rate by 44%,and 43%as compared to the existing methods.

关键词： Deep reinforcement learning gaussian weighted non-local meanﬁlter cauchy kriging regression continuous czekanowski’s implicit continuous authentication mobile devices

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Estimating REY content of eastern Kentucky coal samples based on their associated ash elements

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Journal of Rare Earths 2018年第11期36卷 1234-1238页

作者： s.Chehreh Chelgani james C.Hower Department of Electrical Engineering and Computer science University of Michigan Center for Applied Energy Research University of Kentucky

Coal and coal combustion byproducts can be considered as an alternative source of rare earth elements and yttrium （REY）. The study of relationships between REY and other main coal properties could have several advantages such as estimating REY content of coal particles and designing beneficial extraction method. In this investigation, inter-correlations between REY content with coal parameters （proximate and ash elements） for a wide range of eastern Kentucky coal samples （708 records） were explored. Results demonstrate that zircon and monazite are the main source of heavy and light rare earth elements （HREE and LREE）, respectively. Zr has the highest correlation with Y and Th has the strength relationship with Ce and La. In general, LREE have higher interaction with coal ash content in comparison with HREE. Results indicated that REY can be estimated quite satisfactorily by using their associated elements in coal ash.

关键词： Coal Heavy rare earth Light rare earth Proximate Ash elements

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On the origin of microbial magnetoreception

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National science Review 2020年第2期7卷 472-479页

作者： Wei Lin Joseph L.Kirschvink Greig A.paterson Dennis A.Bazylinski Yongxin Pan Key Laboratory of Earth and Planetary Physics Institute of Geology and Geophysics Chinese Academy of Sciences Institutions of Earth science Chinese Academy of Sciences France-China Joint Laboratory for Evolution and Development of Magnetotactic Multicellular Organisms Chinese Academy of Sciences Division of Geological & Planetary sciences California Institute of Technology Earth-Life science Institute Tokyo Institute of Technology Department of Earth Ocean and Ecological Sciences University of Liverpool school of Life sciences University of Nevada at Las Vegas College of Earth and Planetary sciences University of Chinese Academy of Sciences

A broad range of organisms, from prokaryotes to higher animals, have the ability to sense and utilize Earth’s geomagnetic field—a behavior known as magnetoreception. Although our knowledge of the physiological mechanisms of magnetoreception has increased substantially over recent decades, the origin of this behavior remains a fundamental question in evolutionary biology. Despite this, there is growing evidence that magnetic iron mineral biosynthesis by prokaryotes may represent the earliest form of biogenic magnetic sensors on Earth. Here, we integrate new data from microbiology, geology and nanotechnology, and propose that initial biomineralization of intracellular iron nanoparticles in early life evolved as a mechanism for mitigating the toxicity of reactive oxygen species(ROs), as ultraviolet radiation and free-iron-generated ROs would have been a major environmental challenge for life on early Earth. This iron-based system could have later been co-opted as a magnetic sensor for magnetoreception in microorganisms, suggesting an origin of microbial magnetoreception as the result of the evolutionary process of exaptation.

关键词： magnetoreception biomineralization magnetotactic bacteria exaptation

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