11,891 research outputs found
Logarithmic variance profiles and the corresponding f-1 spectra of temperature fluctuations in turbulent Rayleigh-Bénard convection
No full textWe report experimental results for the temperature variance 2(z) and the corresponding frequency spectra P(f) in turbulent Rayleigh-Bénard convection (RBC) in a cylindrical sample of aspect ratioT= D/L = 1:00 (D = 1:12 m is the diameter and L = 1:12 m the height). The measurements were conducted in the Rayleigh-number range 1011 < Ra < 1:35 1014 and Pr ' 0:8. For Ra = 1:35x1014, 2(z) could be described well by a logarithmic dependence on the vertical position z in a range of z 1 < z < z 2 with z 1 ' 70 and z 2 = 0:1L. Here L=(2Nu) is the thickness of a thin thermal sublayer adjacent to the horizontal plate where the heat flux (denoted by the Nusselt number Nu) is carried mostly by thermal diffusion. In the log layer, we found that the temperature spectra had a significant frequency range over which P(f) f with close to 1. As Ra decreased, increased so that the log layer became thinner. At Ra = 2:05 1011, z 2 < z 1 and therefore there was no range for a log layer. Correspondingly, the temperature spectrum near the horizontal plate did not have the f1 scaling form either
Some formulas for the Appell function F 1 (a, b, b′; c; w, z)
No full textSome new relations for the Appell function F 1 (a, b, b′; c; w, z) are obtained including differentiation and integration formulas, integral representations, series and recurrence relations. Some integrals are given which can be expressed in terms of F 1 and confluent Appell functions (Humbert functions) Φ1, Φ2, Φ
Lyman break galaxies and the star formation rate of the Universe at z ~ 6
Get PDFWe determine the space density of UV-luminous starburst galaxies at z≈ 6 using deep HST ACS SDSS-i′ (F775W) and SDSS-z′ (F850LP) and VLT ISAAC J and Ks band imaging of the Chandra Deep Field South. We find eight galaxies and one star with (i′−z′) > 1.5 to a depth of z′AB= 25.6 (an 8σ detection in each of the 3 available ACS epochs). This corresponds to an unobscured star formation rate of ≈15 h−270 M⊙ yr−1 at z= 5.9, equivalent to L* for the Lyman-break population at z= 3–4 (ΩΛ= 0.7, ΩM= 0.3). We are sensitive to star-forming galaxies at 5.6 ≲z≲ 7.0 with an effective comoving volume of ≈1.8 × 105h−370 Mpc3 after accounting for incompleteness at the higher redshifts due to luminosity bias. This volume should encompass the primeval subgalactic-scale fragments of the progenitors of about a thousand L* galaxies at the current epoch. We determine a volume-averaged global star formation rate of (6.7 ± 2.7) × 10−4h70 M⊙ yr−1 Mpc−3 at z∼ 6 from rest-frame UV selected starbursts at the bright end of the luminosity function: this is a lower limit because of dust obscuration and galaxies below our sensitivity limit. This measurement shows that at z∼ 6 the star formation density at the bright end is a factor of ∼6 times less than that determined by Steidel et al. for a comparable sample of UV-selected galaxies at z= 3–4, and so extends our knowledge of the star formation history of the Universe to earlier times than previous work and into the epoch where reionization may have occurred
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No full textRahmatinejad Z, Hoseini B, Pourmand A, Reihani H, Rahmatinejad F, Eslami S, Author Response. Indian J Crit Care Med 2024;28(2):183-184
Identity of a historic garden: The view of the international literature and committies on the role of the botanical elements
No full textElsevier
Urban Forestry & Urban Greening
Volume 101
, November 2024, 128501
Urban Forestry & Urban Greening
Identity of a historic garden: The view of the international literature and committies on the role of the botanical elements
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Z. Hosseini a
,
F. Bartoli a b
,
M.A. Pontrandolfi a
,
G. Caneva a
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https://doi.org/10.1016/j.ufug.2024.128501
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Abstract
Historic gardens are conceptualized within various cultural and legal frameworks. This research aims to unravel the complexities of the historic garden identity through the lens of international regulations, national laws, and scientific literature to reveal differences in the perception of their botanical elements. We employed a combined analytical approach, using recommendations from related international institutions (i.e. UNESCO, ICCROM, and ICOMOS), national legislation, and a review of scientific literature. The analysis identified 25 documents related to the keywords: nature, landscape, site, and garden; however, only six mentioned gardens, and just one (The Florence Charter., 1982) explicitly addressed historic gardens. Only 7 % of UNESCO member countries (197) have specific provisions for historic gardens. Within them, a diverse range of definitions and standards has resulted in discrepancies in how historic gardens are recognized and conserved across different jurisdictions. Some countries have well-defined categories for garden heritage, while others offer limited or broad categorizations that may obscure garden identities. The findings underscore the necessity for more coherent international regulations that adequately reflect historic gardens' cultural and botanical significance. The study also highlighted the overlooked role of botanical elements, since only four countries included botanical value as an explicit criterion in their legal designations, suggesting that the botanical aspect is often considered within a larger ecological and geographical context. The imperative to preserve these living legacies within the broader context of cultural heritage also became apparent
Writing of(f) family : Sarah’s family hand-me-downs
No full textThis chapter explores family estrangement through the lens of the trauma of transgenerational abandonment. Applying the notion of family hand-me-downs, the author makes use of speculative (real and imagined) autoethnography (Purnell, 2015), to situate relational stories from five family generations. These speculative, relational stories are impacted by traumatic memories, buried deep as affective, psychic, shame-binds. Embodied shame is transmitted down through the generations, as cultural and family scripts—by family members who have become haunted by shameful secrets and silences. Sometimes these ghostly scripts occur unconsciously, and other times, consciously. Breaking the silence of family secrets is never easy. The author hopes that writing trauma stories (relational and speculative) through imagination, adding just a touch of reality, stories can become the impetus for identification and empathy bringing with it the possibility of repairing broken relationships, disconnected by the impact of transgenerational trauma of abandonment. It is only by healing the wounds of the past, bought on by family estrangement, that new relational stories may unfold ending stories of embodied, toxic shame, so that new relationships can flourish
Prof. dr Adam Wawrzyniec Bochenek (1875-1913) — Eminent Polish Anatomist — 100th Anniversary o f His Death
Get PDFNazwisko Adama Bochenka znane jest wszystkim polskim lekarzom i studentom medycyny od ponad 100 lat. Dzieło, które stworzył, pomaga budować fundamenty wiedzy kolejnych pokoleń medyków aż do dnia dzisiejszego. Anatomia człowieka Bochenka jest książką niezwykłą. Liczne ilustracje oraz charakterystyczny dla autora lekki styl pisania sprawiają, że wiedza z pozoru tak nieprzystępna i rozległa staje się przejrzysta i łatwiejsza do zrozumienia. Pozycja ta jest przykładem klasycznego, obszernego podręcznika anatomii, na jakiego napisanie niewielu tylko autorów na świecie potrafiło się zdobyć. Przez ostatnie 100 lat publikacja ta wprowadzała kolejne pokolenia lekarzy nie tylko w tajniki anatomii, ale i całej medycyny. Mimo upływu czasu, dzieło Bochenka wciąż jest uważane za podręcznik wiodący na wszystkich uczelniach medycznych w Polsce, czego niezbitym dowodem są ukazujące się regularnie nowe jego wydania. Z okazji setnej rocznicy śmierci wybitnego polskiego anatoma pragniemy przypomnieć pokrótce jego życiorys, a także przybliżyć historię powstawania największego z jego dzieł.The name of Adam Bochenek have been familiar to every physican and medical student in Poland for a hundred years. For all those years, the book he have written, has been introducing new generations o f future doctors not only to anatomy but to the medicine in general. Bochenek’s The Human Anatomy is an extraordinary book. Typical for the author, descriptive way o f writing as well as numerous drawings make all this vast and inaccessible knowledge more clear, lucid and sometimes even addictive. It is an example o f a classical, extensive handbook o f anatomy. Despite the passage of time, The Human Anatomy is still the leading textbook for all medical universities in Poland, and its new editions coming out every few years are the best way to prove it.Andrzej Grzybowsk
Self-archiving practice and the influence of publisher policies in the social sciences
No full textAuthors in different disciplines exhibit very different behaviours on the so-called ‘green’ road to open access, i.e. self-archiving. This study looks at the self-archiving behaviour of authors publishing in leading journals in six social science disciplines. It tests the hypothesis that authors are self-archiving according to the norms of their respective disciplines rather than following self-archiving policies of publishers, and that, as a result, they are self-archiving significant numbers of publisher PDF versions. It finds significant levels of
self-archiving, as well as significant self-archiving of
the publisher PDF version, in all the disciplines
investigated. Publishers’ self-archiving policies have
no influence on author self-archiving practice
Family Assessment- Author Index
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A-Z
A
Abbott, D.: 263 Abery, B.: 242 Abidin, R: 81, 265 Abramovitch, R: 134, 135, 136, 137, 139,142,143,144,145,146 Abril, s.: 118 Achenbach, T. M.: 12,47, 118, 223, 265 Acock, A. c.: 206 Adams, G. R: 205 Adams, S. J.: 226 Al-Khayyal, M.: 74 Alexander, J. F.: 75 Allisson, P. D.: 185 Alwin, D. F.: 182,191,194 Amato, P. R: 205- 231, 206, 207, 210, 213,215,216, 219, 221, 222, 224, 227,230 Ammerman, R : 263 Amoloza, T. 0 .: 170, 171,172,176, 179, 187, 188 Anastasi, A.: 265 Anderson, B. J.: 85 Anderson, c.: 117 Anderson, P. P.: 104 Anderson, S. A.: 79, 168, 177 Anthony, J.: 117 Apley, J.: 84 Aponte, H. J.: 117 Appelbaum, M.: 263 Arrington, A.: 11 Asher, S.: 82 Asterita, M. F. : 92 Attneave, c.: 121 Auslander, W. F: 85
Z
Zane, N .: 107, 119 Zetlin, A.: 263 Zill, N.: 83 Zuo, J.: 171, 180, 18
Z CONVERTER CONTROL OF A V/F INDUCTION MOTOR DRIVE USING SINEPWM
No full textIn this paper author has implemented speed control of an induction motor fed by sinepulse width modulation (PWM) on Psim software. Z source inverter (ZSI); is used to convert DC to AC supply and the control loop V/F control strategy. API controller is used inherently for controlling the shoot through time interval from the z source capacitor voltage error. The various parameters are plotted using PSIM simulation software and results are demonstrated on the 1.8KW induction motor connected from ZSI from 5Hz to 75Hz. The various simulation results are plotted during startup,input voltage change and load disturbance are plotted
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