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  • Open Access English
    Authors: 
    Jürgen Dengler; Thomas J. Matthews; Manuel J. Steinbauer; Sebastian Wolfrum; Steffen Boch; Alessandro Chiarucci; Timo Conradi; Iwona Dembicz; Corrado Marcenò; Itziar García-Mijangos; +35 more
    Countries: Portugal, Norway, Italy, Switzerland, Poland, Norway, Italy, Italy, Spain, Belgium ...

    Aim Species-area relationships (SARs) are fundamental scaling laws in ecology although their shape is still disputed. At larger areas, power laws best represent SARs. Yet, it remains unclear whether SARs follow other shapes at finer spatial grains in continuous vegetation. We asked which function describes SARs best at small grains and explored how sampling methodology or the environment influence SAR shape. Location Palaearctic grasslands and other non-forested habitats. Taxa Vascular plants, bryophytes and lichens. Methods We used the GrassPlot database, containing standardized vegetation-plot data from vascular plants, bryophytes and lichens spanning a wide range of grassland types throughout the Palaearctic and including 2,057 nested-plot series with at least seven grain sizes ranging from 1 cm(2) to 1,024 m(2). Using nonlinear regression, we assessed the appropriateness of different SAR functions (power, power quadratic, power breakpoint, logarithmic, Michaelis-Menten). Based on AICc, we tested whether the ranking of functions differed among taxonomic groups, methodological settings, biomes or vegetation types. Results The power function was the most suitable function across the studied taxonomic groups. The superiority of this function increased from lichens to bryophytes to vascular plants to all three taxonomic groups together. The sampling method was highly influential as rooted presence sampling decreased the performance of the power function. By contrast, biome and vegetation type had practically no influence on the superiority of the power law. Main conclusions We conclude that SARs of sessile organisms at smaller spatial grains are best approximated by a power function. This coincides with several other comprehensive studies of SARs at different grain sizes and for different taxa, thus supporting the general appropriateness of the power function for modelling species diversity over a wide range of grain sizes. The poor performance of the Michaelis-Menten function demonstrates that richness within plant communities generally does not approach any saturation, thus calling into question the concept of minimal area. We thank all vegetation scientists who carefully collected multi‐ scale plant diversity data from Palaearctic Grasslands available in GrassPlot. The Eurasian Dry Grassland Group (EDGG) and the International Association for Vegetation Science (IAVS) sup‐ ported the EDGG Field Workshops, which generated a core part of the GrassPlot data. The Bavarian Research Alliance (grant BayIntAn_UBT_2017_58) and the Bayreuth Center of Ecology and Environmental Research (BayCEER) funded the initial GrassPlot workshop during which the database was established and the cur‐ rent paper was initiated. A.N. acknowledges support by the Center for International Scientific Studies and Collaboration (CISSC), Iran. C.M., I.B., I.G.‐M and J.A.C. were funded by the Basque Government (IT936‐16). D.V. carried out the research supported by a grant of the State Fund For Fundamental Research Ф83/53427. G.F. carried out the research in the frame of the MIUR initiative ‘Department of excellence' (Law 232/2016). I.D. was supported by the Polish National Science Centre (grant DEC‐2013/09/N/NZ8/03234). J.Do. was supported by the Czech Science Foundation (GA 17‐19376S). M.J. was supported by grant by Slovak Academy of Sciences (VEGA 02/0095/19). W.U. ac‐ knowledges support from the Polish National Science Centre (grant 2017/27/B/NZ8/00316).

  • Closed Access
    Authors: 
    Tzenka Radoukova; Valtcho D. Zheljazkov; Ivanka Semerdjieva; Ivayla Dincheva; Albena Stoyanova; Miroslava Kačániová; Tatjana Marković; Dragoja Radanović; Tess Astatkie; Ivan Salamon;
    Publisher: Elsevier BV

    Abstract Juniperus communis L. is one of the widest spread species on earth, while J. pygmaea C. Koch. and J. sibirica Burgsd. are taxonomically controversial with some authors and the official Flora of Bulgaria recognizing them as separate species and other authors considering them sub-species of J. communis. There are current efforts on developing J. communis as agricultural crop to provide consistency of supply and quality of juniper essential oil (EO) and juniper galbuli (cones or berries). The objective of the study was to evaluate the chemical profile and antimicrobial activity of the leaf EO of juniper species collected in Bulgaria, Serbia, and Slovakia. The leaf EO content and EO composition varied among species and within species and also depended on the plant sex and location. In J. communis EO from Slovakia and Serbia, the major oil constituent was α-pinene (25.1–27.0 % and 21.8–22.2% respectively). However, sabinene (19.8–27.9%) was the major constituent in J. communis EO from Bulgaria. Monoterpene hydrocarbons (MHs) were the main group of EO constituents in J. communis from Bulgaria (17–22% α-pinene, 20–27% sabinene, and 8.8–11.7% γ-terpinene) and Serbia (25–27% α-pinene, 23–25% sabinene, and 4.9 to 5.3% γ-terpinene). J. communis oils originating from Slovakia showed more similarity to those from Bulgaria. The main group of EO constituents in J. pygmaea belonged to MHs (26–28% α-pinene, 17–19% sabinene, and 4.8–6.1% β-phellandrene). The oxygenated sesquiterpenes (OSs) were the second largest group of components in the EO of J. pygmaea, a noted difference compared with J. communis. The main group of EO constituents of J. sibirica from Bulgaria were MHs (36–44% α-pinene, 10–13% δ-3 carene, and 4.5–12% limonene). Eleven components found in the EO of J. sibirica from Bulgaria were not detected in the EOs of other species. In J. sibirica originating in Serbia, the main group of EO constituents belonged to MHs (∼ 24%, sabinene, ∼ 19% α-pinene, and 6% γ-terpinene). The results support the concept that the three junipers should be considered separate species. The leaf EOs of J. communis, J. sibirica, and J. pygmaea did not exhibit significant antimicrobial activity. The results contribute to further understanding of juniper leaf EO in Eastern Europe and can be used by policymakers and industry in conservation planning and in the development of juniper species as agricultural crops.

  • Open Access

    Aspergillus section Restricti together with sister section Aspergillus (formerly Eurotium) comprises xerophilic species, that are able to grow on substrates with low water activity and in extreme environments. We adressed the monophyly of both sections within subgenus Aspergillus and applied a multidisciplinary approach for definition of species boundaries in sect. Restricti. The monophyly of sections Aspergillus and Restricti was tested on a set of 102 isolates comprising all currently accepted species and was strongly supported by Maximum likelihood (ML) and Bayesian inferrence (BI) analysis based on β-tubulin (benA), calmodulin (CaM) and RNA polymerase II second largest subunit (RPB2) loci. More than 300 strains belonging to sect. Restricti from various isolation sources and four continents were characterized by DNA sequencing, and 193 isolates were selected for phylogenetic analyses and phenotypic studies. Species delimitation methods based on multispecies coalescent model were employed on DNA sequences from four loci, i.e., ID region of rDNA (ITS + 28S), CaM, benA and RPB2, and supported recognition of 21 species, including 14 new. All these species were also strongly supported in ML and BI analyses. All recognised species can be reliably identified by all four examined genetic loci. Phenotype analysis was performed to support the delimitation of new species and includes colony characteristics on seven cultivation media incubated at several temperatures, growth on an osmotic gradient (six media with NaCl concentration from 0 to 25 %) and analysis of morphology including scanning electron microscopy. The micromorphology of conidial heads, vesicle dimensions, temperature profiles and growth parameters in osmotic gradient were useful criteria for species identification. The vast majority of species in sect. Restricti produce asperglaucide, asperphenamate or both in contrast to species in sect. Aspergillus. Mycophenolic acid was detected for the first time in at least six members of the section. The ascomata of A. halophilicus do not contain auroglaucin, epiheveadride or flavoglaucin which are common in sect. Aspergillus, but shares the echinulins with sect. Aspergillus.

  • Open Access English
    Authors: 
    Mykola Beshley; Natalia Kryvinska; Marian Seliuchenko; Halyna Beshley; Elhadi M. Shakshuki; Ansar-Ul-Haque Yasar;
    Publisher: MDPI
    Countries: Belgium, Austria

    This paper proposes a modified architecture of the Long-Term Evolution (LTE) mobile network to provide services for the Internet of Things (IoT). This is achieved by allocating a narrow bandwidth and transferring the scheduling functions from the eNodeB base station to an NB-IoT controller. A method for allocating uplink and downlink resources of the LTE/NB-IoT hybrid technology is applied to ensure the Quality of Service (QoS) from end-to-end. This method considers scheduling traffic/resources on the NB-IoT controller, which allows eNodeB planning to remain unchanged. This paper also proposes a prioritization approach within the IoT traffic to provide End-to-End (E2E) QoS in the integrated LTE/NB-IoT network. Further, we develop &ldquo management algorithms for the IoT traffic prioritization. To demonstrate the feasibility of our approach, we performed a number of experiments using simulations. We concluded that our proposed approach ensures high end-to-end QoS of the real-time traffic by reducing the average end-to-end transmission delay. smart queue&rdquo

  • Authors: 
    Marek Osacký; Mirjavad Geramian; Peter Uhlík; Mária Čaplovičová; Zuzana Danková; Helena Pálková; Martina Vítková; Milota Kováčová; Douglas G. Ivey; Qi Liu; +1 more
    Publisher: American Chemical Society (ACS)

    The mineralogy, chemistry, surface properties, and pore structure characteristics of the four different petrologic types of Alberta oil sands were determined in order to better understand their impact on nonaqueous solvent bitumen extraction. Quartz, clay minerals, and carbonates were the main mineral constituents of the studied samples. With increasing weight percentage of clay minerals, the solvent bitumen extraction (by the Dean–Stark procedure using toluene) decreased. Fine grained illite and illite-smectite had more detrimental effect on solvent bitumen extraction than coarse grained kaolinite. The pore structure data revealed that the extractability of bitumen from the oil sands depends on accessibility, more specifically on the size of bitumen-filled pores, by the solvent. The relative abundance and size of pores in the oil sands were controlled by mineral composition and particle size. Fine size fractions were typically enriched in kaolinite and 2:1 clay minerals (illite and illite-smectite) and c...

  • Open Access English
    Authors: 
    Thomas Danne; Revital Nimri; Tadej Battelino; Richard M. Bergenstal; Kelly L. Close; J. Hans DeVries; Satish K. Garg; Lutz Heinemann; Irl B. Hirsch; Stephanie A. Amiel; +24 more
    Publisher: HAL CCSD
    Countries: United Kingdom, France, Italy, Denmark, Netherlands
    Project: WT

    Measurement of glycated hemoglobin (HbA1c) has been the traditional method for assessing glycemic control. However, it does not reflect intra- and interday glycemic excursions that may lead to acute events (such as hypoglycemia) or postprandial hyperglycemia, which have been linked to both microvascular and macrovascular complications. Continuous glucose monitoring (CGM), either from real-time use (rtCGM) or intermittently viewed (iCGM), addresses many of the limitations inherent in HbA1c testing and self-monitoring of blood glucose. Although both provide themeans to move beyond the HbA1c measurement as the sole marker of glycemic control, standardized metrics for analyzing CGM data are lacking. Moreover, clear criteria for matching people with diabetes to themost appropriate glucose monitoring methodologies, as well as standardized advice about howbest to use the new information they provide, have yet to be established. In February 2017, the Advanced Technologies & Treatments for Diabetes (ATTD) Congress convened an international panel of physicians, researchers, and individuals with diabetes who are expert in CGM technologies to address these issues. This article summarizes the ATTD consensus recommendations and represents the current understanding of how CGM results can affect outcomes.

  • Open Access English
    Authors: 
    Louangpradith, Viengsakhone; Phoummalaysith, Bounfeng; Kariya, Tetsuyoshi; Saw, Yu Mon; Yamamoto, Eiko; Hamajima, Nobuyuki;
    Publisher: Nagoya University

    ABSTRACT In Lao People’s Democratic Republic (Lao PDR), reports on disease frequency are very limited. This study aimed to report frequencies of the main cause of admission among inpatients of a tertiary general hospital (Mittaphab Hospital) in Vientiane. Subjects were inpatients who were admitted from January 3 to February 2 in 2017. The dataset were made as a pilot run to establish hospital statistics. The data on sex, age, address (province), dates of admission and discharge, and main diagnosis were collected from paper-based medical charts. International Classification of Diseases 10 was applied for classifying the main diagnosis. During the 1-month period, 1,201 inpatients (637 males and 564 females) were admitted, including 171 (14.2%) aged <20 years and 254 (21.1%) aged ≥60 years. About 20% patients were from outside of Vientiane. Among them, 67.5% (62.5% in males and 73.8% in females) were admitted within 7 days. The main causes with more than 10% in males were injury and poisoning S00-T98 (49.8%), while those in females were injury and poisoning S00-T98 (25.2%), pregnancy and childbirth O00-O99 (19.0%), and diseases of genitourinary system N00-N99 (13.7%). Injury and poisoning S00-T98 among inpatients aged <20 years was 81.8% in males and 59.0% in females. Among those aged 20–59 years, it was 49.9% and 22.4%, and among those aged ≥60 years it was 22.3% and 16.9%, respectively. This is the first report on the frequencies of main diseases among inpatients in Lao PDR. Injury was the first main cause of admission at the tertiary hospital.

  • Publication . Article . Preprint . 2017 . Embargo End Date: 01 Jan 2017
    Open Access
    Authors: 
    Marko Kandić; Mitchell A. Taylor;
    Publisher: arXiv
    Project: NSERC

    In 1987, I. Labuda proved a general representation theorem that, as a special case, shows that the topology of local convergence in measure is the minimal topology on Orlicz spaces and $L_{\infty}$. Minimal topologies connect with the recent, and actively studied, subject of "unbounded convergences". In fact, a Hausdorff locally solid topology $\tau$ on a vector lattice $X$ is minimal iff it is Lebesgue and the $\tau$ and unbounded $\tau$-topologies agree. In this paper, we study metrizability, submetrizability, and local boundedness of the unbounded topology, $u\tau$, associated to $\tau$ on $X$. Regarding metrizability, we prove that if $\tau$ is a locally solid metrizable topology then $u\tau$ is metrizable iff there is a countable set $A$ with $\overline{I(A)}^\tau=X$. We prove that a minimal topology is metrizable iff $X$ has the countable sup property and a countable order basis. In line with the idea that uo-convergence generalizes convergence almost everywhere, we prove relations between minimal topologies and uo-convergence that generalize classical relations between convergence almost everywhere and convergence in measure. Comment: 26 pages

  • Open Access
    Authors: 
    Tomas Zapata; Norbert Forster; Pedro Campuzano; Rejoice Kambapani; Heena Brahmbhatt; Grace Hidinua; Mohamed Turay; Simon Kimathi Ikandi; Leonard Kabongo; Farai Zariro;
    Publisher: Ubiquity Press, Ltd.

    Introduction: During the past two decades, HIV and Sexual and Reproductive Health services in Namibia have been provided in silos, with high fragmentation. As a consequence of this, quality and efficiency of services in Primary Health Care has been compromised. Methods: We conducted an operational research (observational pre-post study) in a public health facility in Namibia. A health facility assessment was conducted before and after the integration of health services. A person-centred integrated model was implemented to integrate all health services provided at the health facility in addition to HIV and Sexual and Reproductive Health services. Comprehensive services are provided by each health worker to the same patients over time (longitudinality), on a daily basis (accessibility) and with a good external referral system (coordination). Prevalence rates of time flows and productivity were done. Results: Integrated services improved accessibility, stigma and quality of antenatal care services by improving the provider-patient communication, reducing the time that patients stay in the clinic in 16% and reducing the waiting times in 14%. In addition, nurse productivity improved 85% and the expected time in the health facility was reduced 24% without compromising the uptake of TB, HIV, outpatient, antenatal care or first visit family planning services. Given the success on many indicators resulting from integration of services, the goal of this paper was to describe “how” health services have been integrated, the “process” followed and presenting some “results” from the integrated clinic. Conclusions: Our study shows that HIV and SRH services can be effectively integrated by following the person-centred integrated model. Based on the Namibian experience on “how” to integrate health services and the “process” to achieve it, other African countries can replicate the model to move away from the silo approach and contribute to the achievement of Universal Health Coverage.

  • Publication . Preprint . Article . 2020 . Embargo End Date: 01 Jan 2020
    Open Access
    Authors: 
    Foster, Dylan J.; Simchowitz, Max;
    Publisher: arXiv

    We introduce a new algorithm for online linear-quadratic control in a known system subject to adversarial disturbances. Existing regret bounds for this setting scale as $\sqrt{T}$ unless strong stochastic assumptions are imposed on the disturbance process. We give the first algorithm with logarithmic regret for arbitrary adversarial disturbance sequences, provided the state and control costs are given by known quadratic functions. Our algorithm and analysis use a characterization for the optimal offline control law to reduce the online control problem to (delayed) online learning with approximate advantage functions. Compared to previous techniques, our approach does not need to control movement costs for the iterates, leading to logarithmic regret. Comment: ICML 2020

search
Include:
The following results are related to Canada. Are you interested to view more results? Visit OpenAIRE - Explore.
1,926 Research products, page 1 of 193
  • Open Access English
    Authors: 
    Jürgen Dengler; Thomas J. Matthews; Manuel J. Steinbauer; Sebastian Wolfrum; Steffen Boch; Alessandro Chiarucci; Timo Conradi; Iwona Dembicz; Corrado Marcenò; Itziar García-Mijangos; +35 more
    Countries: Portugal, Norway, Italy, Switzerland, Poland, Norway, Italy, Italy, Spain, Belgium ...

    Aim Species-area relationships (SARs) are fundamental scaling laws in ecology although their shape is still disputed. At larger areas, power laws best represent SARs. Yet, it remains unclear whether SARs follow other shapes at finer spatial grains in continuous vegetation. We asked which function describes SARs best at small grains and explored how sampling methodology or the environment influence SAR shape. Location Palaearctic grasslands and other non-forested habitats. Taxa Vascular plants, bryophytes and lichens. Methods We used the GrassPlot database, containing standardized vegetation-plot data from vascular plants, bryophytes and lichens spanning a wide range of grassland types throughout the Palaearctic and including 2,057 nested-plot series with at least seven grain sizes ranging from 1 cm(2) to 1,024 m(2). Using nonlinear regression, we assessed the appropriateness of different SAR functions (power, power quadratic, power breakpoint, logarithmic, Michaelis-Menten). Based on AICc, we tested whether the ranking of functions differed among taxonomic groups, methodological settings, biomes or vegetation types. Results The power function was the most suitable function across the studied taxonomic groups. The superiority of this function increased from lichens to bryophytes to vascular plants to all three taxonomic groups together. The sampling method was highly influential as rooted presence sampling decreased the performance of the power function. By contrast, biome and vegetation type had practically no influence on the superiority of the power law. Main conclusions We conclude that SARs of sessile organisms at smaller spatial grains are best approximated by a power function. This coincides with several other comprehensive studies of SARs at different grain sizes and for different taxa, thus supporting the general appropriateness of the power function for modelling species diversity over a wide range of grain sizes. The poor performance of the Michaelis-Menten function demonstrates that richness within plant communities generally does not approach any saturation, thus calling into question the concept of minimal area. We thank all vegetation scientists who carefully collected multi‐ scale plant diversity data from Palaearctic Grasslands available in GrassPlot. The Eurasian Dry Grassland Group (EDGG) and the International Association for Vegetation Science (IAVS) sup‐ ported the EDGG Field Workshops, which generated a core part of the GrassPlot data. The Bavarian Research Alliance (grant BayIntAn_UBT_2017_58) and the Bayreuth Center of Ecology and Environmental Research (BayCEER) funded the initial GrassPlot workshop during which the database was established and the cur‐ rent paper was initiated. A.N. acknowledges support by the Center for International Scientific Studies and Collaboration (CISSC), Iran. C.M., I.B., I.G.‐M and J.A.C. were funded by the Basque Government (IT936‐16). D.V. carried out the research supported by a grant of the State Fund For Fundamental Research Ф83/53427. G.F. carried out the research in the frame of the MIUR initiative ‘Department of excellence' (Law 232/2016). I.D. was supported by the Polish National Science Centre (grant DEC‐2013/09/N/NZ8/03234). J.Do. was supported by the Czech Science Foundation (GA 17‐19376S). M.J. was supported by grant by Slovak Academy of Sciences (VEGA 02/0095/19). W.U. ac‐ knowledges support from the Polish National Science Centre (grant 2017/27/B/NZ8/00316).

  • Closed Access
    Authors: 
    Tzenka Radoukova; Valtcho D. Zheljazkov; Ivanka Semerdjieva; Ivayla Dincheva; Albena Stoyanova; Miroslava Kačániová; Tatjana Marković; Dragoja Radanović; Tess Astatkie; Ivan Salamon;
    Publisher: Elsevier BV

    Abstract Juniperus communis L. is one of the widest spread species on earth, while J. pygmaea C. Koch. and J. sibirica Burgsd. are taxonomically controversial with some authors and the official Flora of Bulgaria recognizing them as separate species and other authors considering them sub-species of J. communis. There are current efforts on developing J. communis as agricultural crop to provide consistency of supply and quality of juniper essential oil (EO) and juniper galbuli (cones or berries). The objective of the study was to evaluate the chemical profile and antimicrobial activity of the leaf EO of juniper species collected in Bulgaria, Serbia, and Slovakia. The leaf EO content and EO composition varied among species and within species and also depended on the plant sex and location. In J. communis EO from Slovakia and Serbia, the major oil constituent was α-pinene (25.1–27.0 % and 21.8–22.2% respectively). However, sabinene (19.8–27.9%) was the major constituent in J. communis EO from Bulgaria. Monoterpene hydrocarbons (MHs) were the main group of EO constituents in J. communis from Bulgaria (17–22% α-pinene, 20–27% sabinene, and 8.8–11.7% γ-terpinene) and Serbia (25–27% α-pinene, 23–25% sabinene, and 4.9 to 5.3% γ-terpinene). J. communis oils originating from Slovakia showed more similarity to those from Bulgaria. The main group of EO constituents in J. pygmaea belonged to MHs (26–28% α-pinene, 17–19% sabinene, and 4.8–6.1% β-phellandrene). The oxygenated sesquiterpenes (OSs) were the second largest group of components in the EO of J. pygmaea, a noted difference compared with J. communis. The main group of EO constituents of J. sibirica from Bulgaria were MHs (36–44% α-pinene, 10–13% δ-3 carene, and 4.5–12% limonene). Eleven components found in the EO of J. sibirica from Bulgaria were not detected in the EOs of other species. In J. sibirica originating in Serbia, the main group of EO constituents belonged to MHs (∼ 24%, sabinene, ∼ 19% α-pinene, and 6% γ-terpinene). The results support the concept that the three junipers should be considered separate species. The leaf EOs of J. communis, J. sibirica, and J. pygmaea did not exhibit significant antimicrobial activity. The results contribute to further understanding of juniper leaf EO in Eastern Europe and can be used by policymakers and industry in conservation planning and in the development of juniper species as agricultural crops.

  • Open Access

    Aspergillus section Restricti together with sister section Aspergillus (formerly Eurotium) comprises xerophilic species, that are able to grow on substrates with low water activity and in extreme environments. We adressed the monophyly of both sections within subgenus Aspergillus and applied a multidisciplinary approach for definition of species boundaries in sect. Restricti. The monophyly of sections Aspergillus and Restricti was tested on a set of 102 isolates comprising all currently accepted species and was strongly supported by Maximum likelihood (ML) and Bayesian inferrence (BI) analysis based on β-tubulin (benA), calmodulin (CaM) and RNA polymerase II second largest subunit (RPB2) loci. More than 300 strains belonging to sect. Restricti from various isolation sources and four continents were characterized by DNA sequencing, and 193 isolates were selected for phylogenetic analyses and phenotypic studies. Species delimitation methods based on multispecies coalescent model were employed on DNA sequences from four loci, i.e., ID region of rDNA (ITS + 28S), CaM, benA and RPB2, and supported recognition of 21 species, including 14 new. All these species were also strongly supported in ML and BI analyses. All recognised species can be reliably identified by all four examined genetic loci. Phenotype analysis was performed to support the delimitation of new species and includes colony characteristics on seven cultivation media incubated at several temperatures, growth on an osmotic gradient (six media with NaCl concentration from 0 to 25 %) and analysis of morphology including scanning electron microscopy. The micromorphology of conidial heads, vesicle dimensions, temperature profiles and growth parameters in osmotic gradient were useful criteria for species identification. The vast majority of species in sect. Restricti produce asperglaucide, asperphenamate or both in contrast to species in sect. Aspergillus. Mycophenolic acid was detected for the first time in at least six members of the section. The ascomata of A. halophilicus do not contain auroglaucin, epiheveadride or flavoglaucin which are common in sect. Aspergillus, but shares the echinulins with sect. Aspergillus.

  • Open Access English
    Authors: 
    Mykola Beshley; Natalia Kryvinska; Marian Seliuchenko; Halyna Beshley; Elhadi M. Shakshuki; Ansar-Ul-Haque Yasar;
    Publisher: MDPI
    Countries: Belgium, Austria

    This paper proposes a modified architecture of the Long-Term Evolution (LTE) mobile network to provide services for the Internet of Things (IoT). This is achieved by allocating a narrow bandwidth and transferring the scheduling functions from the eNodeB base station to an NB-IoT controller. A method for allocating uplink and downlink resources of the LTE/NB-IoT hybrid technology is applied to ensure the Quality of Service (QoS) from end-to-end. This method considers scheduling traffic/resources on the NB-IoT controller, which allows eNodeB planning to remain unchanged. This paper also proposes a prioritization approach within the IoT traffic to provide End-to-End (E2E) QoS in the integrated LTE/NB-IoT network. Further, we develop &ldquo management algorithms for the IoT traffic prioritization. To demonstrate the feasibility of our approach, we performed a number of experiments using simulations. We concluded that our proposed approach ensures high end-to-end QoS of the real-time traffic by reducing the average end-to-end transmission delay. smart queue&rdquo

  • Authors: 
    Marek Osacký; Mirjavad Geramian; Peter Uhlík; Mária Čaplovičová; Zuzana Danková; Helena Pálková; Martina Vítková; Milota Kováčová; Douglas G. Ivey; Qi Liu; +1 more
    Publisher: American Chemical Society (ACS)

    The mineralogy, chemistry, surface properties, and pore structure characteristics of the four different petrologic types of Alberta oil sands were determined in order to better understand their impact on nonaqueous solvent bitumen extraction. Quartz, clay minerals, and carbonates were the main mineral constituents of the studied samples. With increasing weight percentage of clay minerals, the solvent bitumen extraction (by the Dean–Stark procedure using toluene) decreased. Fine grained illite and illite-smectite had more detrimental effect on solvent bitumen extraction than coarse grained kaolinite. The pore structure data revealed that the extractability of bitumen from the oil sands depends on accessibility, more specifically on the size of bitumen-filled pores, by the solvent. The relative abundance and size of pores in the oil sands were controlled by mineral composition and particle size. Fine size fractions were typically enriched in kaolinite and 2:1 clay minerals (illite and illite-smectite) and c...

  • Open Access English
    Authors: 
    Thomas Danne; Revital Nimri; Tadej Battelino; Richard M. Bergenstal; Kelly L. Close; J. Hans DeVries; Satish K. Garg; Lutz Heinemann; Irl B. Hirsch; Stephanie A. Amiel; +24 more
    Publisher: HAL CCSD
    Countries: United Kingdom, France, Italy, Denmark, Netherlands
    Project: WT

    Measurement of glycated hemoglobin (HbA1c) has been the traditional method for assessing glycemic control. However, it does not reflect intra- and interday glycemic excursions that may lead to acute events (such as hypoglycemia) or postprandial hyperglycemia, which have been linked to both microvascular and macrovascular complications. Continuous glucose monitoring (CGM), either from real-time use (rtCGM) or intermittently viewed (iCGM), addresses many of the limitations inherent in HbA1c testing and self-monitoring of blood glucose. Although both provide themeans to move beyond the HbA1c measurement as the sole marker of glycemic control, standardized metrics for analyzing CGM data are lacking. Moreover, clear criteria for matching people with diabetes to themost appropriate glucose monitoring methodologies, as well as standardized advice about howbest to use the new information they provide, have yet to be established. In February 2017, the Advanced Technologies & Treatments for Diabetes (ATTD) Congress convened an international panel of physicians, researchers, and individuals with diabetes who are expert in CGM technologies to address these issues. This article summarizes the ATTD consensus recommendations and represents the current understanding of how CGM results can affect outcomes.

  • Open Access English
    Authors: 
    Louangpradith, Viengsakhone; Phoummalaysith, Bounfeng; Kariya, Tetsuyoshi; Saw, Yu Mon; Yamamoto, Eiko; Hamajima, Nobuyuki;
    Publisher: Nagoya University

    ABSTRACT In Lao People’s Democratic Republic (Lao PDR), reports on disease frequency are very limited. This study aimed to report frequencies of the main cause of admission among inpatients of a tertiary general hospital (Mittaphab Hospital) in Vientiane. Subjects were inpatients who were admitted from January 3 to February 2 in 2017. The dataset were made as a pilot run to establish hospital statistics. The data on sex, age, address (province), dates of admission and discharge, and main diagnosis were collected from paper-based medical charts. International Classification of Diseases 10 was applied for classifying the main diagnosis. During the 1-month period, 1,201 inpatients (637 males and 564 females) were admitted, including 171 (14.2%) aged <20 years and 254 (21.1%) aged ≥60 years. About 20% patients were from outside of Vientiane. Among them, 67.5% (62.5% in males and 73.8% in females) were admitted within 7 days. The main causes with more than 10% in males were injury and poisoning S00-T98 (49.8%), while those in females were injury and poisoning S00-T98 (25.2%), pregnancy and childbirth O00-O99 (19.0%), and diseases of genitourinary system N00-N99 (13.7%). Injury and poisoning S00-T98 among inpatients aged <20 years was 81.8% in males and 59.0% in females. Among those aged 20–59 years, it was 49.9% and 22.4%, and among those aged ≥60 years it was 22.3% and 16.9%, respectively. This is the first report on the frequencies of main diseases among inpatients in Lao PDR. Injury was the first main cause of admission at the tertiary hospital.

  • Publication . Article . Preprint . 2017 . Embargo End Date: 01 Jan 2017
    Open Access
    Authors: 
    Marko Kandić; Mitchell A. Taylor;
    Publisher: arXiv
    Project: NSERC

    In 1987, I. Labuda proved a general representation theorem that, as a special case, shows that the topology of local convergence in measure is the minimal topology on Orlicz spaces and $L_{\infty}$. Minimal topologies connect with the recent, and actively studied, subject of "unbounded convergences". In fact, a Hausdorff locally solid topology $\tau$ on a vector lattice $X$ is minimal iff it is Lebesgue and the $\tau$ and unbounded $\tau$-topologies agree. In this paper, we study metrizability, submetrizability, and local boundedness of the unbounded topology, $u\tau$, associated to $\tau$ on $X$. Regarding metrizability, we prove that if $\tau$ is a locally solid metrizable topology then $u\tau$ is metrizable iff there is a countable set $A$ with $\overline{I(A)}^\tau=X$. We prove that a minimal topology is metrizable iff $X$ has the countable sup property and a countable order basis. In line with the idea that uo-convergence generalizes convergence almost everywhere, we prove relations between minimal topologies and uo-convergence that generalize classical relations between convergence almost everywhere and convergence in measure. Comment: 26 pages

  • Open Access
    Authors: 
    Tomas Zapata; Norbert Forster; Pedro Campuzano; Rejoice Kambapani; Heena Brahmbhatt; Grace Hidinua; Mohamed Turay; Simon Kimathi Ikandi; Leonard Kabongo; Farai Zariro;
    Publisher: Ubiquity Press, Ltd.

    Introduction: During the past two decades, HIV and Sexual and Reproductive Health services in Namibia have been provided in silos, with high fragmentation. As a consequence of this, quality and efficiency of services in Primary Health Care has been compromised. Methods: We conducted an operational research (observational pre-post study) in a public health facility in Namibia. A health facility assessment was conducted before and after the integration of health services. A person-centred integrated model was implemented to integrate all health services provided at the health facility in addition to HIV and Sexual and Reproductive Health services. Comprehensive services are provided by each health worker to the same patients over time (longitudinality), on a daily basis (accessibility) and with a good external referral system (coordination). Prevalence rates of time flows and productivity were done. Results: Integrated services improved accessibility, stigma and quality of antenatal care services by improving the provider-patient communication, reducing the time that patients stay in the clinic in 16% and reducing the waiting times in 14%. In addition, nurse productivity improved 85% and the expected time in the health facility was reduced 24% without compromising the uptake of TB, HIV, outpatient, antenatal care or first visit family planning services. Given the success on many indicators resulting from integration of services, the goal of this paper was to describe “how” health services have been integrated, the “process” followed and presenting some “results” from the integrated clinic. Conclusions: Our study shows that HIV and SRH services can be effectively integrated by following the person-centred integrated model. Based on the Namibian experience on “how” to integrate health services and the “process” to achieve it, other African countries can replicate the model to move away from the silo approach and contribute to the achievement of Universal Health Coverage.

  • Publication . Preprint . Article . 2020 . Embargo End Date: 01 Jan 2020
    Open Access
    Authors: 
    Foster, Dylan J.; Simchowitz, Max;
    Publisher: arXiv

    We introduce a new algorithm for online linear-quadratic control in a known system subject to adversarial disturbances. Existing regret bounds for this setting scale as $\sqrt{T}$ unless strong stochastic assumptions are imposed on the disturbance process. We give the first algorithm with logarithmic regret for arbitrary adversarial disturbance sequences, provided the state and control costs are given by known quadratic functions. Our algorithm and analysis use a characterization for the optimal offline control law to reduce the online control problem to (delayed) online learning with approximate advantage functions. Compared to previous techniques, our approach does not need to control movement costs for the iterates, leading to logarithmic regret. Comment: ICML 2020