bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of the possibilities of rare earth elements obtaining from coal and fly ash
Authors: Całus-Moszko Joanna , Białecka Barbara 
Published: March 2013

Streszczenie
Pierwiastki ziem rzadkich nazywane powszechnie REE (Rare Earth Elements) to grupa 15 lantanowców od lantanu do lutenu, a także skand i itr, które charakteryzują się podobnymi właściwościami chemicznymi. Stanowią surowce uznane przez Unię Europejską za jedne z listy 14 surowców krytycznych, o znaczeniu strategicznym dla rozwoju nowoczesnych wysoko zawansowanych technologii. Światowe wydobycie REE kształtuje się aktualnie na poziomie 139 tys. Mg, a głównym producentem są Chiny, które dostarczają około 93% światowego zapo­trzebowania na surowce ziem rzadkich W związku z sytuacją na światowym rynku metali ziem rzadkich (REE), w ostatnich latach rozpoczęto wiele projektów w celu poszukiwania nowych źródeł REE. W artykule omówiono znaczenie ziem rzadkich w gospodarce światowej. Głównym celem pracy było określenie potencjału i form występowania pierwiastków ziem rzadkich w węglach kamiennych i odpadach z energetycznego wykorzystania węgla, jako alternatywnego źródła ich pozyskania. Na podstawie analizy literatury oraz przeprowadzonych badań własnych wytypowanych próbek polskich węgli kamiennych i popiołów z elektrowni, przedstawiono zawartości pierwiastków ziem rzadkich REE w wybranych węglach i popiołach lotnych z elektrowni na świecie i w Polsce. Średnia zawartość £ REE w węglach na świecie wynosi 60 ppm natomiast w badanych węglach polskich z KWK Jankowice £ REE wynosiła 77 ppm, dla pozostałych węgli uzyskano niższe zawartości od 8 do 40 ppm. Ponadto praca przedstawia perspektywiczne światowe zasoby tych pierwiastków, które mogą stać się ich cennym, alternatywnym źródłem w ciągu najbliższych lat.
Cooled and desalinated thermal water utilization in the Podhale heating system
Authors: Tomaszewska Barbara , Pająk Leszek 
Published: March 2013

Streszczenie
Woda obiegowa w instalacjach ciepłowniczych musi posiadać odpowiednie parametry fizykochemiczne, uzależnione od wymagań technicznych producentów urządzeń, przez które przypływa. Nie powinna powodować powstawania kamienia kotłowego, pienić się oraz korozyjnie oddziaływać na elementy instalacji.
W pracy przedstawiono badania dotyczące oceny możliwości wykorzystania odpadowych wód termalnych w celu uzupełnienia ubytków wody sieciowej w największym polskim geotermalnym systemie ciepłowniczym zlokalizowanym w obrębie niecki podhalańskiej. Obszar ten cechuje się dużymi zasobami wód termalnych, a jednocześnie deficytem wód zwykłych. Odpadowe wody termalne ze względu na wykazywane parametry fizykochemiczne mogą być wykorzystane w systemie dopiero po uzdatnieniu. Podczas badań zagospodarowana i uzdatniana była jedynie część całkowitego strumienia wody geotermalnej (do 5 m3/h), odpowiadająca mniej więcej zapotrzebowaniu systemu ciepłowniczego na świeżą uzdatnioną wodę obiegową (ok. 550 m3/miesiąc). Ubytki wody sieciowej wynikają z nieszczelności sieci, prowadzenia remontów, modernizacji lub obsługi sieci. Oczyszczanie przeprowadzone zostało z wykorzystaniem procesów membranowych w zintegrowanym systemie złożonym z ultrafiltracji (UF) i dwóch niezależnych stopni odwróconej osmozy (RO-1 i RO-2) połączonych szeregowo. Uzdatnianie prowadzone było przy częściowym wykorzystaniu artezyjskiego ciśnienia złożowego, co pozwoliło zredukować moc pomp obiegowych eliminując zużycie energii o około 0,7-0,9 kW. Dzięki pod­wyższonej temperaturze wody uzdatnionej zredukowana została moc cieplna o około 30 kW oraz efektywniej prowadzone były procesy oczyszczania i odgazowania wody. Uzyskano redukcję: zawartości żelaza ze stężenia około 4 do 0,013 g/m3, twardości ogólnej z 13,5 val/m3 do <0,02 val/m3, zasadowości z 4,45 val/m3 do <0,01 val/m3, fosforanów z 0,03 do <0,006 g/m3, uzyskując spełnienie wymagań określonych w normach, co po korekcie pH i odgazowaniu pozwala wykorzystać uzdatnione wody geotermalne dla uzupełnienia ubytków wody sieciowej w systemie ciepłowniczym.
Polska Norma PN-85/C-04601 nie specyfikuje wymagań w zakresie dopuszczalnego stężenia m.in. chlorków i siarczanów w wodzie obiegowej, a więc anionów wpływających nakorozyjność wody, głównie wżerową. Jony te tworzą rozpuszczalne związki z metalami, utrudniając powstawanie i wytrącanie tlenków metali. Zastosowanie przedstawionej technologii membranowej w odsalaniu wód termalnych pozwoliło na uzyskanie wysokiego stopnia retencji. Wynosi on dla chlorków 97% po RO-1 i 99 % po RO-2, natomiast dla siarczanów 99% już po RO-1.
The Social Sciences of Sport: Assumptions, Associations, and Conferences
Authors: Kosiewicz Jerzy , Smoleń Andrzej 
Published: March 2013

Abstract New national and international societies that examine sports have been created and developed in Europe as well as on other continents. These societies, which examine the complex phenomena, issues, and questions concerning sports as seen from the different scientific points of view, are rooted in two main research directions: the natural sciences on the one hand, and the social sciences on the other.The authors of the paper point to the significant and ongoing development of the social sciences of sport. In particular, the authors discuss the development of the sociology of sport, philosophy of sport, psychology of sport, pedagogy of sport, history of physical culture, sports and Olympics, the organization and management of sport, social and cultural foundations of tourism and recreation, social relationships associated with sports training and tactics, as well as the humanistic theories of Eastern martial arts.The authors have listed several national, continental, and international scientific organizations that unite representatives of the aforementioned disciplines. However, the authors’ main focus is on theoretical and organizational assumptions of the International Society for the Social Sciences of Sport, an organization founded in 2009.The society’s main objectives are to unite the particular social sciences of sport in one organized and scientific body (while maintaining the existing differences between the sciences); to enable the annual debate and exchange of views on the substantive and methodological matters; as well as to provide joint scientific publications connected with common work of the group and with the journal Physical Culture and Sport. Studies and Research.The authors discuss the research and publishing activities of the Polish Society for Social Sciences of Sport, introducing the organization as an example of any future organization that could cooperate with the International Society for the Social Sciences of Sport.
K-shell single-electron capture in collision of fast protons with multi-electron atoms
Authors: Ghanbari-Adivi Ebrahim , Velayati Azimeh 
Published: March 2013

Abstract
Single-electron capture from the K shell of atomic targets by impact of protons at moderate and high energies has been studied using a first-order three-body Coulomb-Born continuum distorted wave approximation. The applied formalism satisfies the correct Coulomb boundary conditions. Single-zeta Roothaan-Hartree-Fock wave functions are used to describe the initial electronic bound state of the exchanged electron. Both differential and integral capture cross sections are calculated for impact of protons on carbon, nitrogen, oxygen, neon and argon atoms. The results are compared with the available measurements and other theories. The agreement between the calculations and experimental data is remarkable.
Could a structural damage mimic a Parkinson plus syndrome?
Authors: Alexoudi Athanasia , Zalonis Ioannis , Stathis Pantelis 
Published: March 2013

Abstract
Corticobasal syndrome (CBS) is a progressive disease that includes a heterogeneous neuropathological spectrum. In the majority of cases, corticobasal degeneration (CBD) is the underlying disease. Clinical heterogeneity is reflected in the clinical presentation of the syndrome and consequently misdiagnosis is common. Our case is of interest because the symptoms, the poor response to L-dopa and the I123 Ioflupane CIT SPECT (DAT-SCAN) results were typical for CBD. However, the magnetic resonance imaging appearance suggested the possibility of a disease of vascular etiology. A 63-year-old woman presented in our outpatient clinic with symptoms of progressive clumsiness in the right arm when performing movements demanding fine motor skills, and mild speech difficulties. The brain magnetic resonance imaging (MRI) report described ischemic lesions in the left subcortical parietal areas, in the centrum semiovale, in periventricular white matter, cingulated gyrus bilaterally and moderate ventricle dilatation. A comprehensive neuropsychological study suggested mixed cortical and subcortical involvement. A DAT-SCAN examination showed a diminished dopamine transporter uptake in the left lenticular nucleus, suggesting parkinsonisn. For this patient, CBS-CBD was the most probable diagnosis, whereas vascular CBS was not excluded. This case report illustrates the low diagnostic sensitivity in predicting CBD and the overlap with other related neurodegenerative diseases. Finally, it demonstrates that in CBS, different underlying pathologies can be found at the same individual.
Geosite of a steep lava spatter cone of the 1256 AD, Al Madinah eruption, Kingdom of Saudi Arabia
Authors: Moufti M. , Németh K. , Murcia H. , Lindsay J. , El-Masry N. 
Published: March 2013

AbstractUNESCO promotes geoconservation through various programs intended to establish an inventory of geologically and geomorphologically significant features worldwide that can serve as an important database to understand the Earth’s global geoheritage. An ultimate goal of such projects globally is to establish geoparks that represent an integrated network of knowledge transfer opportunities, based on a specific array of geological and geomorphological sites able to graphically demonstrate how the Earth works to the general public. In these complex geoconservation and geoeducational programs, the identification of significant geological and geomorphological features is very important. These are commonly referred to as ‘geosites’ or ‘geomorphosites’, depending on whether the feature or processes the site demonstrates is more geological or geomorphological, respectively. The Kingdom of Saudi Arabia is an extraordinary place due to its arid climate and therefore perfect exposures of rock formations. The Kingdom is also home to extensive volcanic fields, named “harrats” in Arabic, referring particularly to the black, basaltic lava fields that dominate the desert landscape. Current efforts to increase awareness of the importance of these volcanic fields in the geological landscape of Arabia culminated in the first proposal to incorporate the superbly exposed volcanic features into an integrated geoconservation and geoeducation program that will hopefully lead to the development of a geopark named, “The Harrat Al Madinah Volcanic Geopark” [1]. Here we describe one of the extraordinary features of the proposed Harrat Al Madinah Volcanic Geopark, namely a steep lava spatter cone formed during a historical eruption in 1256 AD.
Responses of Eurasian woodcock Scolopax rusticola to simulated hunting disturbance
Authors: Ferrand Yves , Aubry Philippe , Landry Philippe , Priol Pauline 
Published: March 2013

The Eurasian woodcock Scolopax rusticola is a valued game species in southwestern Europe, which is locally under a high hunting pressure. Disturbance due to hunting can lead to avoidance of wintering areas or have an impact on population dynamics owing to behavioural changes. We studied the impact of disturbance on 54 radio‐tagged woodcocks under an experimental framework. The birds were allocated to the following three groups: simulated hunting disturbance (controlled disturbance; CD), hunted (H) and control (C). We studied the following four behavioural elements: space use, activity duration, number of commuting flights and date of spring migration departure. We found no differences in behavioural responses between the groups except for space use. A majority of CD birds used larger ranges during daytime than did H and C birds but did not change their nocturnal sites. To a large extent, this nocturnal site fidelity likely accounted for the weak disturbance effect, in so far as food intake was ensured. Our study underlines the importance of permanent meadows in the surroundings of forests to help this species to better withstand hunting disturbance.
The Study Of Vertical Cephalic Index (Length-Height Index) And Transverse Cephalic Index (Breadth-Height Index) Of Andhra Region (India).
Authors: Salve Vishal Manoharrao , Chandrashekhar Chikatapu 
Published: March 2013

Background & objectives: Cephalometry is a branch of anthropometry that describes measurements of head and face in cadaveric, living or radiologic specimen. The vertical cephalic index is the ratio of the maximum height of head to its maximum length. The transverse cephalic index is the ratio of the maximum height of head to its maximum breadth. Materials and Methods: The present study was carried out with 320 (160 male & 160 female) medical students of Dr. Pinnamaneni Siddhartha Institute of Medical Sciences & Research Foundation and Dr. Sudha & Nageswara Rao Institute of Dental Sciences Chinnaoutpally, Krishna District (AP), India. Results: The mean vertical cephalic index for male was 74.08 ± 3.24 and for female was 73.03 ± 4.64. The mean transverse cephalic index for male was 97.91 ± 3.77 and for female was 93.41 ± 5.57. The differences between male and female mean vertical cephalic index and mean transverse cephalic index were significant. Discussion & conclusion: The result of present study shows that all male and female of Andhra region are hypsicephalic according to classification based on vertical cephalic index and acrocephalic according to classification based on transverse cephalic index. Vertical cephalic index of the male is 1-2 point higher than the female in Andhra region population. This data can be useful for forensic medicine experts, plastic surgeons, neurosurgeons, neurologists, anatomist, anthropologist, fasciomaxillary surgeons, oral surgeons and for clinical and research purpose. This study will serve as basis for comparison of future studies on Andhra region population of India and also South Asian population. Asian Journal of Medical Science, Volume-3 No-3 (2012), Page 6-11 DOI: http://dx.doi.org/10.3126/ajms.v3i3.4650
Reviews
Authors: Underhill Frank , Frye Northrop , Trueman  , Wilson  , Sparshott  , MacLure Millar 
Published: March 2013

Edward Hallett Carr, A History of Soviet Russia: The Bolshevik Revolution, 1917–1923, reviewed by Frank H. Underhill Edward Hallett Carr, The New Society, reviewed by Frank H. Underhill R. S. Crane, The Languages of Criticism and the Structure of Poetry, reviewed by Northrop Frye Hilda Neatby, So Little for the Mind, reviewed by A. W. Trueman Harry Levin, The Overreacher: A Study of Christopher Marlowe, reviewed by H. S. Wilson F. P. Wilson, Marlowe and the Early Shakespeare, reviewed by H. S. Wilson Ronald B. Levinson, In Defense of Plato, reviewed by F. E. Sparshott George Whalley, Poetic Process, reviewed by Millar MacLure
Impact of Timing of Admission in Labour on Subsequent Outcome
Authors: Janna Junnu Rayen , Chowdhury Saleha Begum 
Published: March 2013

To examine the effect of timing at which women admitted either in active or latent phase of spontaneous labour on subsequent outcome. This cross-sectional study was conducted at labour ward, department of Obstetrics and Gynaecology, BSMMU hospital, Dhaka, Bangladesh, from August 2007 to November 2007, where data were collected prospectively. A total of 60 women with term, singletone pregnancy, cephalic presentation with spontaneous onset of labour admitted in labour either in active or latent phase were selected for evaluation. Patients with any medical or obstetric complications, rupture of membrane, antenatally diagnosed foetal anomalies or death and with prior caesarean section were excluded from the study. Patients with cervical dilatation at less than 4cm were categorized as latent phase and were in group I. On the other hand, patients with cervical dilatation of 4 cm or more were marked as in active phase and were allocated in group II. Baseline characteristics were compared. Outcome differences were compared using chi-square(X2) test, t test, fishers exact test, A p value <0.05 considered significant. Duration of labour, mode of delivery, indication for caesarean section, need for oxytocin, labour analgesia, Apgar score <7, birth weight of baby, maternal PPH and postpartum hospital stay. A total of 60 patients were enrolled during the study period. Of them 35 patients (58.3%)were in group I and 25 patients (41.7%) in group II. Duration of labour was more in early admitted group compared to late admitted group (mean± SD 17.0 ± 2.8 vs 14.3 ± 2.4). Latent phase women needed more caesarean delivery than active phase women (62.9% vs 28.0%). Dystocia was the main indication for caesarean delivery in the present study which was 68.2% and 28.6% in early and late admitted group respectively. Second commonest indication for caesarean section was foetal distress (6 in group I and 5 in group II). Oxytocin for augmentation was used in 62.9% in group I and 56.0% in group II and nulliparae women were the one who needed more augmentation (40.0% in group I, 36.0% in group II). Mean foetal weight between two groups did not reach any significant difference (p>0.05). Apgar score <7 shows insignificant difference between two groups. PPH was found in 5.7% cases and all were from group I. Total postpartum hospital stay was significantly longer in group I than group II (p<0.05). t is shown that early admission to the hospital in low-risk women may negatively affect the outcome of labour and are at increased risk of prolonged labour, more need for analgesia, increased rate of caesarean section, increased PPH and postpartum hospital stay. DOI: http://dx.doi.org/10.3329/cbmj.v2i1.14177 Community Based Medical Journal Vol.2(1) 2013 21-28
Comparison of Geographic Atrophy Measurements from the OCT Fundus Image and the Sub-RPE Slab Image
Authors: Yehoshua Zohar , Garcia Filho Carlos Alexandre A. , Penha Fernando M. , Gregori Giovanni , Stetson Paul F. , Feuer William J. , Rosenfeld Philip J. 
Published: March 2013

PURPOSE:
To compare two different approaches to measuring areas of geographic atrophy (GA) using spectral-domain optical coherence tomography (SD-OCT).

METHODS:
Fifty eyes with GA were imaged with an SD-OCT instrument. OCT fundus images and sub– retinal pigment epithelium (RPE) slab images were generated. Three graders manually drew the GA boundaries on both en face images. An automated algorithm was used to segment the GA boundaries from the sub-RPE slabs.

RESULTS:
The agreement between the three manual measurements on both OCT fundus images (ICC = .998) and sub-RPE slabs (ICC = .999) was excellent. Area measurements from OCT fundus images and sub-RPE slabs were highly correlated. The agreement between manual and automated measurements on the sub-RPE slabs was very good (ICC = .795).

CONCLUSION:
Both OCT fundus images and sub-RPE slab images proved useful for measuring GA in age-related macular degeneration. The automated algorithm typically provided useful measurements of GA area from the sub-RPE slabs.

[
Ophthalmic Surg Lasers Imaging Retina
. 2013;44:127–132]
An Efficient Rescaling Algorithm for Simulating the Evolution of Multiple Elastically Stressed Precipitates
Authors: Barua Amlan K. , Li Shuwang , Feng Hualong , Li Xiaofan , Lowengrub John 
Published: March 2013

AbstractIn this paper, we propose a space-time rescaling scheme for computing the long time evolution of multiple precipitates in an elastically stressed medium. The algorithm is second order accurate in time, spectrally accurate in space and enables one to simulate the evolution of precipitates in a fraction of the time normally used by fixed-frame algorithms. In particular, we extend the algorithm recently developed for single particle by Li et al. (Li, Lowengrub and Leo, J. Comput. Phys., 335 (2007), 554) to the multiple particle case, which involves key differences in the method. Our results show that without elasticity there are successive tip splitting phenomena accompanied by the formation of narrow channels between the precipitates. In presence of applied elastic field, the precipitates form dendrite-like structures with the primary arms aligned in the principal directions of the elastic field. We demonstrate that when the far-field flux decreases with the effective radius of the system, tip-splitting and dendrite formation can be suppressed, as in the one particle case. Depending on the initial position of the precipitates, we further observe that some precipitates grow while others may shrink, even when a positive far field flux is applied.
Nonxenogeneic Growth and Retinal Differentiation of Human Induced Pluripotent Stem Cells
Authors: Sridhar Akshayalakshmi , Steward Melissa M. , Meyer Jason S. 
Published: March 2013

Abstract
Human induced pluripotent stem cells (hiPSCs) possess tremendous potential for the field of regenerative medicine because of their ability to differentiate into any cell type of the body. Such ability has profound implications for translational medicine, because these cells have been implicated for use in cell replacement, disease modeling, and pharmacological screening. However, the translation of established methods for deriving retinal cell types from hiPSCs has been hindered by the use of xenogeneic products for their growth and differentiation. Thus, the ability to derive retinal cell types in the absence of xenogeneic products would represent a significant advancement. The following studies were therefore undertaken to test the ability of hiPSCs to give rise to retinal cells under nonxenogeneic conditions. hiPSCs were maintained in traditional, feeder-free, or xeno-free culture conditions, and their ability to differentiate to a retinal fate was tested. Upon differentiation under all three conditions, cells acquired advancing features of retinal development, eventually yielding cell types of the mature retina. Reverse transcription-polymerase chain reaction and immunocytochemistry confirmed early trends in gene and protein expression patterns in xeno-free derived hiPSCs similar to those in cells derived in mouse embryonic fibroblasts and in feeder-free conditions. Results from this study demonstrate that hiPSCs can be maintained and directed to differentiate into retinal cell types under nonxenogeneic conditions, similar to cells derived using current xenogeneic methodologies. The demonstration of this capability will facilitate future efforts to develop hiPSC-based therapies for retinal disorders and also help to advance in vitro studies of human retinal development.