bluuebunny/crossref_metadata_2025_split huggingface dataset:
Superoxide Dismutase 2 Polymorphisms and Osteoporosis in Asian Indians: A Genetic Association Analysis
Authors: Botre Chaitali , Shahu Arjun , Adkar Neeraj , Shouche Yogesh , Ghaskadbi Saroj , Ashma Richa 
Published: September 2015

AbstractOxidative stress plays an important role in the development of osteoporosis. The present cross-sectional study focuses on mapping single nucleotide polymorphisms (SNPs) in the mitochondrial manganese superoxide dismutase (SOD2) gene in Asian Indians. The bone mineral density (BMD) of study subjects was assessed by dual x-ray absorptiometry. Individuals were classified as normal (n = 82) or osteoporotic (n = 98). Biochemical parameters such as vitamin D, total oxidant status (TOS) and SOD2 enzyme activity were estimated from plasma samples. Semi-quantitative PCR was carried out using GAPDH as an endogenous control. Genomic DNA was isolated from whole blood and SNPs were evaluated by PCR sequencing. Thirteen SNPs are reported in the examined region of the SOD2 gene, out of which in our samples SNPs rs5746094 and rs4880 were found to be polymorphic. Allele G of rs5746094 (intronic) and allele C of rs4880 (exonic) are significantly higher in the osteoporotic individuals. Presence of allele C of rs4880 and increased level of TOS among osteoporotic individuals were found to be associated with disease risk.
Riesz transform related to a Schrödinger type operator on the Heisenberg group
Authors: Liu Yu , Xie Wenjiang 
Published: September 2015

Abstract
In this paper, we consider the Schrödinger type operator

H
2

=

(
-

Δ

ℍ
n

)

2

+

V
2

${H_2=(-\Delta _{\mathbb {H}^n})^2+V^2}$

on the Heisenberg group ℍ
n
, where

Δ

ℍ
n

$\Delta _{\mathbb {H}^n}$

is
the sub-Laplacian and the non-negative potential V belongs to
the reverse Hölder class B

q
1
for

q
1

>

Q
2

${q_1&gt;\frac{Q}{2}}$

and Q > 5,
where

Q
=
2
n
+
2

${Q=2n+2}$

is the homogeneous dimension of ℍ
n
. The Lp
and
weak type (1,1) estimates of the Riesz transform

∇

ℍ
n

2

H
2

-
1
/
2

$\nabla _{\mathbb {H}^n}^2 H^{-1/2}_2$

related to
the Schrödinger type operator H
2 are obtained, where

∇

ℍ
n

${\nabla _{\mathbb {H}^n}}$

is the gradient operator on ℍ
n
. Moreover, we show
that

∇

ℍ
n

2

H
2

-
1
/
2

$\nabla _{\mathbb {H}^n}^2 H^{-1/2}_2$

is a Calderón–Zygmund operator if

V
∈

B

Q
/
2

${V\in B_{Q/2}}$

and there exists a positive constant C such that

V

(
g
)

≤
C
m

(
g
,
V
)

2

${V(g)\le Cm(g,V)^2}$

.
An embedding theorem for the category of crossed P-modules
Authors: Arslan Ummahan Ege , Onarlı Gülümsen 
Published: September 2015

Abstract
In this paper, we show that
the category

𝖷𝖬𝗈𝖽
/
P

${\mathsf {XMod}/P}$

of crossed modules over a fixed group P is an exact category.
We give a complete proof of the embedding theorem of

𝖷𝖬𝗈𝖽
/
P

${\mathsf {XMod}/P}$

into a
set-valued functor category. As a consequence of this theorem, we show that the subcategory of finitely generated free crossed P-modules is dense in the category of crossed P-modules and each crossed P-module is represented as a coend.
Modified Dincer and Dost Method for Predicting the Mass Transfer Coefficients in Solids
Authors: Ilicali Coskan , Icier Filiz 
Published: September 2015

Abstract
The analytical model developed by Dincer and Dost [3] for the estimation of diffusivities and mass transfer coefficients has been reviewed, and the equations used for the evaluation of the mass transfer coefficients have been corrected. The corrected equations have been used for the calculation of mass transfer coefficients from literature data. It was observed that the corrected diffusivities showed significant differences from the previously calculated values. The use of the modified equations in future drying calculations will lead to more realistic mass transfer coefficient values.
Pregnancy outcome and long-term follow-up of fetuses with isolated increased NT: a retrospective cohort study
Authors: Iuculano Ambra , Pagani Giorgio , Stagnati Valentina , Floris Marcella , Ibba Rosa Maria , Monni Giovanni 
Published: September 2015

AbstractTo assess the prevalence of associated findings, diagnosed either prior to or after birth, among fetuses with increased nuchal translucency (NT) and normal karyotype and to investigate the prevalence of children under therapy at school age, among cases confirmed to be isolated both prior to and after birth.Retrospective cohort study of all singleton pregnancies were referred for the 1There were 19 106 women screened for Down syndrome. Among them, 846 (4.4%) had a NT >95Parents should be informed that fetuses with increased NT and normal karyotype need detailed ultrasound scans during pregnancy and detailed pediatric evaluation at birth; if these are normal, the risk from adverse outcome at school age is the same as for general population.
Understanding Mobile Library Apps Continuance Usage in China: A Theoretical Framework and Empirical Study
Authors: Zhao Yang , Deng Shengli , Zhou Ruoxin 
Published: September 2015

AbstractWith the pervasiveness of mobile applications (apps), many Chinese libraries have begun to use apps to provide mobile services to users. Although many mobile library (m-library) apps have a high-downloaded rate in the App store, the rate of users continuing to use them remains extremely low, and the acceptance-discontinuance anomaly phenomenon (i.e., users discontinue using a m-library app after initially accepting it) is a common occurrence in China. This study develops an integrated model designed to explain and predict users’ continued usage of m-library apps based on the expectation confirmation model of information system continuance (ECM-ISC) and the theory of information system success, It incorporates habit, as a moderating variable of continuance intention and behaviour, into the model. Empirical data was collected from 396 users who had prior experience with m-library apps and was tested against the proposed research model using structural equation modelling. The results demonstrated that user perceived usefulness, expectation confirmation and satisfaction are important parts of the formation of m-library apps continuance usage. Furthermore, the three components of the information system success model, system quality, information quality and service quality, also have significant impacts on user confirmation and ultimately affect continuance usage. And the negative influence of habit on continuance intention and behaviour has been supported. The study will be useful for Chinese libraries to better understand users’ continuance usage behaviour and service demands, and in turn to optimize the function of apps and improve the quality of mobile services.
Optimisation of the emulsion liquid membrane
composition and demulsification for rhodium
extraction
Authors: Moyo Francis , Tandlich Roman 
Published: September 2015

Abstract:
This study was aimed at designing an optimised
emulsion liquid membrane (ELM) for the extraction of
rhodium from precious metal refinery wastewaters. The
demulsification process and the structure of the optimised
ELM are reported on. Two optimised ELMs were prepared.
The first one contained a 30 % solution of toluene in
kerosene as diluent with the following concentrations of
the ELM components: 30.000 g/L (w/v) polyisobutylene,
10.870 g/L (m/v) of trioctyl amine and 51.001 g/L (m/v) of
SPAN 80. The second ELM contained the same diluent,
but the concentrations of the other ELM components in
it were as follows: 20.000 g/l of polyisobutylene, 10.268
g/l trioctyl amine and 50.024 g/l of SPAN 80. The stripping
phase was the same in both optimised ELMs, namely
a 2 M solution of HNO3. The stripping phase and the
diluent solution were mixed together in ratios of 1:1 and
2:1, respectively. Two methods were used to characterise
the microdroplet diameters, i.e. optical microscopy and
the Zeta-sizer. For the t-test, the p-value of 0.3018 at 5 %
level of significance showed that there was statistically no
significant difference in the mean micro-droplet size for 1:2
ELMs containing 20 g/l and 30 g/l of polyisobutylene after
40 minutes of emulsification. The best demulsification
results were obtained using the chemical demulsification
with polyethylene glycol with molecular weight of 400
g/mol (PEG 400) at 50 ± 1 °C for 24 hours. However,
significant carryover of toluene, trioctyl amine and
polyethylene glycol into the aqueous phase was observed.
Simulating from the Heston model: A gamma approximation scheme
Authors: Bégin Jean-François , Bédard Mylène , Gaillardetz Patrice 
Published: September 2015

Abstract
The Heston model is appealing as it possesses a stochastic volatility term as well as semi-closed formulas for pricing European options. Unfortunately, few simulation schemes for this model can handle the violation of the Feller Condition.
An algorithm based on the exact scheme of Broadie and Kaya to simulate price paths under the Heston model is introduced. In order to increase the speed of their exact method, we use a gamma approximation. According to Stewart, Strijbosch, Moors and Batenburg, it is possible to approximate a complex gamma convolution (similar to the representation given by Glasserman and Kim) by a simple moment-matched gamma distribution.
We also perform a review of popular simulation schemes for the Heston model and validate our approach through a simulation study.
The gamma approximation scheme appears to yield small biases on European and Asian option prices when compared to the most popular schemes.
Customer love: Research on the ranking of food and beverage locations
Authors: Bahar Türk , Aysel Erciş 
Published: September 2015

Abstract
Intense competition in today’s markets has meant that customer loyalty is no longer as strong as it used to be. In this context, many researchers have aimed to add new values to the concept of loyalty, particularly focusing on the concept of “love”. This study explores customers’ feelings towards location in order to identify their preferred - or “most loved” - food and beverage locations. A questionnaire was administered to 395 adult customers living in the city centre of Erzurum, Turkey. The fuzzy Shannon’s entropy method is used to identify the weights of each criterion of love, while the fuzzy VIKOR method is used to rank alternative locations. As a result of the analyses, the most prominent expression was found as “I love this location!”, and customers’ most loved places were identified as those serving regional dishes in Erzurum Province, Turkey. The study uses fuzzy numbers to rank alternatives according to the criteria of love. In addition, the ranking is based on degrees of fuzziness by changing the α-cut levels of the fuzzy numbers. The study examines how customers’ preferences between alternatives alter via this change
Viva la Revolución, or: Do Revolutions Lead to More Democracy?
Authors: Boese Vanessa A. 
Published: September 2015

AbstractThere is a vast amount of studies on the origins of revolutions and armed conflict. However, there is no empirical analysis of the political outcome of revolutionary conflicts. A second branch of research focuses on waves of democratization. This paper fills the gap and links the two fields by examining the importance of revolutions as an explanatory factor for changes in systems of governance. Using a data set covering 135 countries from 1960–2011, global changes in the level of democracy are examined. The revolutionary conflicts examined in the panel had a positive influence on a countrys democratic path. In addition the effect of selected variables on the development of the system of governance is analyzed in more detail.
Status and opportunities for future use of terahertz radiation for clinical applications
Authors: Trevino-Palacios Carlos Gerardo 
Published: September 2015

Abstract:
An overview of terahertz (THz) development is presented in view of possible medical applications, including details of the current technologies which could be effectively used. Although no clinical THz technologies are currently in use, its principal applicability has been already demonstrated in skin cancer detection and treatment, dental caries detection and pharmaceutical screening. Fundamental limitations of THz studies are highlighted which have to be overcome before clinical applications can be realized.
Vernetztes Gesundheitswesen – zum Nutzen aller Beteiligten
Authors: Elmer Arno 
Published: September 2015

Zusammenfassung
Die Telematikinfrastruktur (TI) vernetzt das Gesundheitswesen und wird dazu beitragen, eine qualitativ hochwertige und wohnortnahe Patientenbetreuung auch in Zukunft zu ermöglichen. Der Gesetzgeber hat deshalb im E-Health-Gesetz festgelegt, dass die TI mit ihren Sicherheitsmerkmalen als die zentrale Kommunikationsplattform im Gesundheitswesen etabliert werden soll. Die TI bietet die Chance, den Umgang mit den vorhandenen Ressourcen effizienter zu gestalten sowie eine nachhaltige Versorgung zu schaffen.
Telemedizin in der grenzüberschreitenden Gesundheitsversorgung am Beispiel transnationaler Teleradiologie
Authors: Rosenberg Britta , Hosten Norbert 
Published: September 2015

Zusammenfassung
Telemedizin ist ein Mittel, die politische Zielvorstellung „wohnortnahe Gesundheitsversorgung“ auch in Flächenstaaten zu erfüllen. Schon auf nationaler Ebene kollidiert sie zwar mit dem „Fernbehandlungsverbot“ als Ausdruck eines traditionellen Arzt-Patienten-Verhältnisses, kann aber homogene rechtliche und qualitative Bedingungen voraussetzen. Transnational müssen Qualitätsmaßstäbe ärztlicher Arbeit eingehalten werden, Voraussetzungen (Register, Anerkennung von Qualifikationen) sind jedoch nicht gegeben.
Vorteile der Digitalisierung in der Patientenschulung am Beispiel Diabetes
Authors: Ruile Georg , Schiel Ralf 
Published: September 2015

Zusammenfassung
Durch die Zunahme chronischer Erkrankungen werden Selbstmanagement-Fähigkeiten der Patienten immer wichtiger. Patientenschulungen bspw. bei Diabetes fördern diese Fähigkeiten. Online-Tools sind hier noch kaum etabliert, lassen sich jedoch ideal dazu einsetzen. Ihre Vorteile liegen u.a. in der orts- und zeitunabhängigen Verfügbarkeit und ihrer Effektivität. Sie haben großes Potenzial, die Versorgungsqualität bei maximaler Ressourceneffizienz zu verbessern.
Die Medizin geht online
Authors: Kendziorra Emil 
Published: September 2015

Zusammenfassung
Die Medizin hat den Wandel von der Offline- in die Online-Welt begonnen. Wenn man betrachtet, wie sich Märkte über die Zeit verhalten, erkennt man, dass geradezu jeder Markt irgendwann eine „Transition“ durchläuft. Aus dem Einzelhandel wurde eCommerce, aus CDs und Radio wurde iTunes, Spotify und Streaming. In Amerika, aber auch in Europa, entstehen aktuell die ersten Lösungen. Allerdings ist es noch offen, ob Europa das Thema mit genügend Ersthaftigkeit und öffentlicher Unterstützung angeht.
Innovation durch Google Glass? – Chancen und Hürden für den Patient 3.0
Authors: Pobiruchin Monika , Wiesner Martin 
Published: September 2015

Zusammenfassung
Die Präsentation der Google Glass im Jahr 2012 hat ein weltweites Medienecho hervorgerufen. Vor allem im Ingenieurswesen, Produktion und Logisitik sind zahlreiche Anwendungsszenarien für Datenbrillen denkbar. Auch im Gesundheitswesen wird über ihren Einsatz diskutiert und erste Prototypen evaluiert. Diese richten sich jedoch primär an die Benutzergruppen der Ärzte und des medizinischen Personals. Doch wie können diese neuen Geräte Patienten aktiv im Alltag unterstützen und einen Mehrwert liefern?
Cenotes – Lakes of the Yucatan Peninsula (Mexico)
Authors: Szeroczyńska Krystyna , Zawisza Edyta 
Published: September 2015

Abstract
Cenote lakes are natural sinkholes or depressions resulting from the collapse of limestone bedrock exposing the groundwater underneath. Thousands of such lakes are particularly encountered on the Yucatan Peninsula (Mexico). These lakes were of great significance for the Maya culture as important religious places and primary source of drink­ing water. They permitted the survival of Mayan communities through dry periods known as “Maya drought”. Most of the cenote lakes are large open water pools measuring tens of meters in diameter. The majority of cenotes are smaller sheliered sites. Their waiers are usually very clear and oligotrophic, originating from rain waier filtering slowly through the ground. The auihors visited and coliected zooplankion samples from eight cenotes in November 2013, namely: Ik-Kil, Samula, Zaci, X-Kekn, Actum Ha, Cristal, Sian Ka’an, and Chan Chemuxil (transect Merida-Tulum- Cancun). The analysed lakes differ considerably in morphological terms, varying from very deep to shallow. Some of them are under human impact (tourists). The water samples were anaiysed for zooplankton content, but the phyto­plankton frequently occurring was also taken into account. The obtained results are largely varied, indicated big eco­logical verity among cenotes which depended on lake age, localization and morphometry. As showed our study Cladocera zooplankion was very rare and only present at several sites. Beiween the fauna community Copepoda and Ostracoda species were the most abundant. Phytoplankton were present in all studied lakes and it sees that played the central role in those ecosystems.
Pressure-induced transformation processes in ferroelastic Pb3(P1–x
As
x
O4)2, x = 0 and 0.80
Authors: Mihailova Boriana , Angel Ross J. , Waeselmann Naemi , Maier Bernd J. , Paulmann Carsten , Bismayer Ulrich 
Published: September 2015

Abstract
The high-pressure behaviour of two representative palmierite-type Pb3(P
x
As1–x
O4)2 ferroelastic compounds with x
= 0 and 0.80 was analyzed by combined single-crystal X-ray diffraction and Raman spectroscopy. Single-crystal diffraction measurements on the As-rich compound Pb3(P0.20As0.80O4)2 show that it undergoes the same macroscopic monoclinic to trigonal phase transition as previously observed in pure Pb3(PO4)2 but with a significantly lower transition pressure, p
c
= 0.90(4) GPa for x
= 0.80 as opposed to p
c
= 1.81(1) for x
= 0.0. Synchrotron X-ray diffraction experiments reveal that both compounds exhibit significant diffuse scattering in a pressure interval of ~1.5 GPa above the corresponding pressure-induced transitions, indicating the persistence of monoclinic nanodomains within the macroscopically trigonal phase above the phase-transition point, similar to the high-temperature structural state. Raman spectroscopy reveal quite distinct lattice dynamics for x
= 0 and x
= 0.80, indicating different pathways of pressure-driven structural alteration. The pure phosphate compound shows a displacive phase transition of thermodynamically second-order type, whereas the As-rich compound exhibits an order-disorder phase transition with multistep structural changes on the mesoscopic scale. The pressure evolution of the Pb phonon modes as well as the broadening of the X-ray diffraction peaks suggests a further pressure-induced phase transition occurring in the range 5–7 GPa for Pb3(P0.20As0.80O4)2, whilst no indication for a second phase transition up to 10 GPa was observed for Pb3(PO4)2.
Influence of Limestone Addition on the Performance of Cement Mortars and Pastes Exposed to a Cold Sodium Sulfate Solution
Authors: Lee S. T. , Hooton R. D. 
Published: September 2015

Abstract
The overall aim of this paper was to establish sulfate resistance of cement mortars and pastes incorporating limestone exposed to severe sulfate attack at 20 and 4°C. Specimens with 0, 10, 20, and 30 % replacement levels of cement by limestone were continually exposed to a sodium sulfate solution with 33,800 ppm of SO42– concentration for 44 weeks. Sulfate exposure tests included compressive and flexural strengths, expansion, and mass loss measurements of mortar specimens. Additionally, in order to identify products formed by sulfate attack, microstructural observations such as X-ray diffraction (XRD) and scanning electron microscopy (SEM) were performed on the paste samples. Experimental results indicated that the mortar specimens incorporating limestone were much more susceptible to sodium sulfate attack compared to those without limestone, especially when exposed to a 4°C sulfate solution. It was found that the main deterioration product of the damaged samples with higher limestone contents was identified as thaumasite, not ettringite or gypsum, by means of XRD and SEM analysis. Furthermore, data on mechanical characteristics confirmed that the sulfate deterioration of mortar specimens was greatly dependent on the replacement levels of limestone.
Engineering Properties of Asphalt Concrete Patching Mixtures
Authors: Chen Jian-Shiuh , Ho Han-Chang , Liao Min-Chih , Wang Tai-Yen 
Published: September 2015

Abstract
Potholes are a visible and annoying form of pavement distress for highway users. One reason for the short life of pothole repairs is that the commonly used patching mixtures cannot withstand the wet weather and the traffic loading. A comprehensive laboratory investigation was performed to evaluate the engineering properties of hot-mix, cold-laid (HMCL) asphalt concrete patching mixtures. The performance characteristics of patching materials was categorized based on four aspects related to initial stability, in-service durability, water resistance, and workability. The engineering properties of HMCL patching mixes were investigated, including Marshall stability, indirect tensile strength, rutting resistance, pothole simulation, and uniaxial compression. Four binders, one aggregate type, two gradations, and one residual binder content were selected for testing in the laboratory. Test results indicated that curing time, nominal maximum aggregate size, temperature condition, and binder type influenced the performance of maintenance materials. The difference in indirect tensile strength among patching mixtures was shown to be high, and the indirect tensile test appeared to be effective in differentiating patching mixtures. A preliminary criterion of the dynamic stability value of more than 1000 cycles/mm was suggested for maintenance materials for rutting resistance. Patching mixtures subjected to loading cycles of 30 or higher to reach 3-mm rut depth under wet conditions in the pothole test were deemed satisfactory in resistance to moisture-induced damage. The patching mixtures tested exhibited good workability at temperatures of 20°C or higher. Test procedures and acceptance criteria developed in this study could be useful as part of a specification to promote quality of bituminous patching mixtures.
Evaluation of Socio-Environmental Effects considering Road Service Levels for Transportation Asset Management
Authors: Han Daeseok , Do Myungsik 
Published: September 2015

Abstract
Internationally, aging infrastructures, tighter budget, and public demands for more accountability have stimulated interests in asset management. Since the old management concept “Worst-First approach” cannot counteract those issues any more, many countries or organizations have developed and operating decision-making support tools, such as Highway Development and Management-4 (HDM-4), RealCOST, HERS, and so on. Nevertheless, the programs missed an important concept of the asset management—the business—which treats the balance among the asset condition, user's satisfaction, and budget demand. The powerful weapon of the business is the level of service (LOS), which is an essential tool for quantification, evaluation, and negotiation. For those reasons, this study tried to suggest a general framework of the LOS-based life cycle cost analysis (LCCA) considering road users and social benefits, and to show its adaptability with empirical application to a Korean case. The case study aimed at the Korean national highway network, and details of sub-models and analysis options followed by the legal investment guideline in Korea. This would be a significant trial, combining engineering, management, economics, accounting, and environmental issues under the single concept of asset management.