52,640 research outputs found

    Conversion of methane to C4&plus aliphatic products in high yields using an integrated recycle reactor system

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    This invention relates to processes and systems for the conversion of methane in high yields to C4+ hydrocarbons. The principal steps of the recycle process include reacting methane and O2 in an oxidative coupling reactor over a Mn/Na2WO4/SiO2 catalyst at 800�� C. to convert the methane to ethylene, and oligomerizing the ethylene product by reacting it with an H-ZSM-5 zeolite catalyst at 275�� C. in a catalytic reactor for subsequent conversion of the ethylene to higher hydrocarbons. Total yields of C4+ products using the process of the invention are in the range of about 60% to about 80%, and yields of C4+ nonaromatic hydrocarbons are in the range of about 50% to about 60%.U

    AMČR - archeologický záznam M-202100430A

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    Stav: 3Označení: 061/2020Lokalizace/okolnosti: Opava - Zlatníky, ul. Na Louky. Parc. č. 172. RD Jakub Losert.Souhrn/upřesnění: Při jiném archeologickém dohledu byla zjištěna tato neohlášená akce. Jednalo se o skrývku travnatého povrchu louky (cca h = 0,3 m) pro stavbu RD na hlinité podloží nivního sedimentu. Rozměry skryté plochy pro RD cca 7 x 18 m. Dále byly uvnitř skrývky vyhloubeny základové pasy (cca š = 0,5 m, h = 0,6 m) až do sprašového podloží – archeologicky negativní. Další výkopy byly za skrývkou domu. Jednalo se o liniový výkop pro splaškovou kanalizaci, dále pak výkop pro septik, přepad a pro bazén (4 x 10 m). Geologický profil výkopů: kvartérní hlinité a jílovité uloženiny, sprašové podloží. Číslo akce NPÚ Ostrava 61/20. Název akce: Opava - Zlatníky, ul. Na Louky, RD Jakub Losert

    Mesophilic-hydrothermal-thermophilic (M-H-T) digestion of green corn straw

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    Mesophilic-hydrothermal (80-160 degrees C, 30 min)-thermophilic (M-H-T) digestion and control tests of mesophilic (M), thermophilic (T), hydrothermal-mesophilic (H-M), and mesophilic-thermophilic digestion (M-T) of green corn straw were conducted for a 20-day fermentation period. The results indicate that M-H-T is an efficient method to improve methane production. A maximum methane yield of 371.74 mL/g volatile solid was obtained by the M (3 days)-H (140 degrees C)-T (17 days) process, which was 20.44%, 16.55%, 31.44%, and 14.31% higher than the yields of the M, T, 140-M, and M-T processes. The enhanced methane production was attributed to (1) the improved hemicellulose degradation and lignin disorganization; (2) prevention of the degradation of soluble sugar, easily hydrolyzed hemicellulose and cellulose into furfural and methylfurfural; and (3) lack of formation of Maillard reaction products during initial hydrothermal treatment. (C) 2015 Elsevier Ltd. All rights reserved

    Salix diazii M. Idrees & J. M. H. Shaw 1015, nom. nov.

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    Salix × diazii M. Idrees & J.M.H. Shaw, nom. nov. Replaced name:— Salix × longissima T.E.Díaz & J.Andrés (1987: 132), nom. illeg., non S. longissima P.Wessel (1855: 140). Type:— SPAIN. Léon Province: La Martina, 490 m, 29TPH91, 16 June 1985, T.E. Díaz et al. s.n. (holotype, LEB29538!, isotypes LEB29539!, LEB30605!). Etymology:— The specific epithet honours Prof. Dr. Tomás Emilio Díaz González (University of Oviedo, Oviedo, Spain), author of the replaced name, for his tremendous contributions to the taxonomy of the genus Salix. Distribution:— Spain, Léon Province (La Martina).Published as part of Idrees, Muhammad & Shaw, Julian M. H., 2022, A new name for extant Salix × longissima T. E. Díaz & J. Andrés (Salicaceae), pp. 213-214 in Phytotaxa 550 (2) on page 213, DOI: 10.11646/phytotaxa.550.2.11, http://zenodo.org/record/664103

    Lah–Ribarič type inequalities for (h, g; m)-convex functions

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    Recently introduced new class of (h, g; m)-convex functions unifies a certain range of convexity, thus allowing the generalizations of know results. In this paper we prove Lah–Ribarič type inequalities for (h, g; m)-convex functions from which we obtain inequalities of Hermite–Hadamard, Fejér, Giaccardi, Popoviciu and Petrović. © 2021, The Author(s) under exclusive licence to The Royal Academy of Sciences, Madrid

    PEDAGOGICAL ASPECTS OF INTRODUCING THE GREEN PROGRAM INTO WORKING WITH PERSONS WITH MENTAL AND PHYSICAL DISABILITIES

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    Diplomska naloga obravnava problematiko izobraževanja odraslih oseb z motnjo v duševnem in telesnem razvoju. Vseživljenjsko učenje je nujno za te osebe, saj tako ohranjajo že pridobljeno znanje in spoznavajo nove vsebine, ki jim pomagajo h kvalitetnejšemu življenju. Danes se odnos do oseb s motnjami v duševnem in telesnem razvoju spreminja tako, da so vedno bolj vključene v normalno življenje, ni pa bilo vedno tako. V Varstveno delovnem centru Polž si prizadevamo ponuditi uporabnikom kakovostno storitev in jim poleg različnih dejavnosti nudimo tudi vključitev v Zeleni program, kjer uporabniki spoznavajo delo na vrtu. V empiričnem delu naloge je predstavljen projekt Zelenega programa in uspešnost uporabnikov pri projektu.Thesis deals with the problem of adult education of people with disabillities in mental and physical development. Lifelong learning is essential for these persons, as this is the way to retain already acquired knowledge and learn new content, which helps improve their quality of life. Today, the attitude towards persons with disabilities in mental and physical development is changing so that they are becoming more and more involved in normal life, but this was not always the case. In Occupational activity centre Polž, we strive to offer users quality service and in addition to various activities we also offer the inclusion in the Green programme where users learn to work in the garden. Project Green programme and performance of the users in the project is presented in empirical part of the thesis

    The long-wavelength view of GG Tau A: rocks in the ring world

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    We present the first detection of GG Tau A at centimetre wavelengths, made with the Arcminute Microkelvin Imager Large Array at a frequency of 16 GHz (λ = 1.8 cm). The source is detected at >6 σrms with an integrated flux density of S16GHz = 249 ± 45 µJy. We use these new centimetre-wave data, in conjunction with additional measurements compiled from the literature, to investigate the long-wavelength tail of the dust emission from this unusual protoplanetary system. We use an MCMC-based method to determine maximum likelihood parameters for a simple parametric spectral model and consider the opacity and mass of the dust contributing to the microwave emission. We derive a dust mass of Md ~ 0.1 Msun, constrain the dimensions of the emitting region and find that the opacity index at λ > 7 mm is less than unity, implying a contribution to the dust population from grains exceeding ~4 cm in size. We suggest that this indicates coagulation within the GG Tau A system has proceeded to the point where dust grains have grown to the size of small rocks with dimensions of a few centimetres. Considering the relatively young age of the GG Tau association in combination with the low derived disc mass, we suggest that this system may provide a useful test case for rapid core accretion planet formation models

    A 2 h periodic variation in the low-mass X-ray binary Ser X-1

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    Spectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines. We tentatively interpret this variability as due to orbital motion, making it the first indication of the orbital period of Ser X-1. Together with the fact that the emission lines are remarkably narrow, but still resolved, we show that a main-sequence K dwarf together with a canonical 1.4 M? neutron star gives a good description of the system. In this scenario, the most likely place for the emission lines to arise is the accretion disc, instead of a localized region in the binary (such as the irradiated surface or the stream-impact point), and their narrowness is due instead to the low inclination (?10°) of Ser X-1

    Mrs. H. M. Evers

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    Newspaper Article - 'Mrs. H. M. Evers' - Mrs. Evers hopes she can learn much about the living conditions here and the possibilities for the Dutch settlers.Alberta Women's Institutes; AWI CollectionMRS. H. M. EVERS I bring out his capital immediately and until such time as their cap­ital is released things are quite difficult. "' There are very few provinces in Canada that will sup­ply the Dutch settlers with a loan", Mr. Jensma stated. On her arrival here Mrs. Evers i was astounded at the unusua1. building of the city and the large • ields of wheat. " Of course we have wheat too, but ours is only a small country so we have to be very economical and not spend out land too freely". The buildings are much taller and narrower, es­pecially in the cities. Wood is very expensive so most of the homes are built of brick and concrete with corrugated steel and tile roofs. Give True Picture In her travels across the country Mrs. Evers hopes she can lenrn much about the living conditions here and the possibilities for the Dutch settlers so when she re- | turns to her homeland she will b- i able to give the women of Holland all the information possible and prepare them for their great ad­venture. Mrs. Evers and her family re­side on a 150 acre farm in the northern part of the country. Her daughter Tjaakje is a teacher in home economics and her son. Luken, works on the farm. Besides serving on the immigra­tion board she is a member of the international board of the YWCA; the international Council of Wo­men: international corporation of Dutch Country Wives: the inter­national organization of the As­sociated Country Women of thr World: and a member of the Wo­men's Institutes. She will leave on Tuesday for Toronto, where she will be met by Mr. W. Blome. who is with the Netherlands Immigration Board in Ottawa. A doctor declares the British people are taking 10.000,000 aspirin tablets a day

    Refinements of some fractional integral inequalities for refined (α, h− m) -convex function

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    This article investigates new inequalities for generalized Riemann–Liouville fractional integrals via the refined (α, h− m) -convex function. The established results give refinements of fractional integral inequalities for (h− m) -convex, (α, m) -convex, (s, m) -convex, and related functions. Also, the k-fractional versions of given inequalities by using a parameter substitution are provided. © 2021, The Author(s)
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