bluuebunny/crossref_metadata_2025 huggingface dataset:
Modeling the Structure of Acute Sport-Related Concussion Symptoms: A Bifactor Approach
Authors: Nelson Lindsay D. , Kramer Mark D. , Patrick Christopher J. , McCrea Michael A.
Published: August 2018

Objectives:Concussions cause diverse symptoms that are often measured through a single symptom severity score. Researchers have postulated distinct dimensions of concussion symptoms, raising the possibility that total scores may not accurately represent their multidimensional nature. This study examined to what degree concussion symptoms, assessed by the Sport Concussion Assessment Tool 3 (SCAT3), reflect a unidimensional versus multidimensional construct to inform how the SCAT3 should be scored and advance efforts to identify distinct phenotypes of concussion.Methods:Data were aggregated across two prospective studies of sport-related concussion, yielding 219 high school and college athletes in the acute (<48 hr) post-injury period. Item-level ratings on the SCAT3 checklist were analyzed through exploratory and confirmatory factor analyses. We specified higher-order and bifactor models and compared their fit, interpretability, and external correlates.Results:The best-fitting model was a five-factor bifactor model that included a general factor on which all items loaded and four specific factors reflecting emotional symptoms, torpor, sensory sensitivities, and headache symptoms. The bifactor model demonstrated better discriminant validity than the counterpart higher-order model, in which the factors were highly correlated (r=.55–.91).Conclusions:The SCAT3 contains items that appear unidimensional, suggesting that it is appropriate to quantify concussion symptoms with total scores. However, evidence of multidimensionality was revealed using bifactor modeling. Additional work is needed to clarify the nature of factors identified by this model, explicate their clinical and research utility, and determine to what degree the model applies to other stages of injury recovery and patient subgroups. (JINS, 2018,24, 793–804)
A NOTE ON OPTIMAL CAPITAL TAXATION WITH PREFERENCE EXTERNALITIES
Authors: Chang Cheng-Wei , Lai Ching-Chong
Published: August 2018

This paper extends the Chamley–Judd framework by introducing preference externalities in a neoclassical growth model, and finds that the optimal capital tax increases with the extent of social-status seeking or negative leisure externalities. Furthermore, this paper finds that differences in leisure externalities lead to a distinct impact on optimal factor income taxes, and hence may serve as a plausible vehicle to explain the empirical differences in factor income taxation in the United States and Europe.
The next generation cohort: a description of a cohort at high risk for childhood onset type 2 diabetes
Authors: Jabar F. , Colatruglio S. , Sellers E. , Kroeker K. , Wicklow B.
Published: August 2018

Children of mothers with youth-onset (<18 years) type 2 diabetes (T2D) are at increased risk of youth-onset T2D. In Canada, the highest reported prevalence of youth-onset T2D is in First Nation youth, some of whom harbor a unique genetic predisposition HNF1α polymorphism which has been associated with age of onset and clinical presentation. To describe the characteristics of the Next Generation birth cohort (n=260) at 7–9 years (n=88) and 14–16 years of age (n=27). This is a cross-sectional study of offspring exposed in utero to T2D (Next Generation Birth Cohort). Annual assessments from age 7 include height and weight, and biochemical testing (glucose, insulin, lipids, HbA1c). Descriptive statistics were employed. χ2 tests and repeated-measures ANOVA were used to compare categorical and continuous characteristics, respectively. In total, 11.9% of the total cohort have developed T2D. Of those 14–16.9 years of age, 16.0% have developed T2D. 92% of the offspring ages 7–9 and 70.3% of offspring ages 14–16 are overweight or obese. Children had a significantly higher body mass index z-score than adolescents (2.9 v. 1.5, P=0.001). Comparing the different HNF1α genotypes (G/G wildtype, G/S heterozygote, S/S homozygote); HbA1c (GG: 5.5% v. G/S: 5.7% v. S/S: 8.8%; P=0.0052), insulin (GG: 103 v. G/S: 202; P=0.05) and T2D status (G/G: 5.7% v. G/S: 28.1% v. S/S: 72.7%; P<0.0001) were significantly different between groups. T2D is very common among adolescents of mothers with youth-onset T2D. Early childhood obesity and the HNF1α G319S allele are associated with the incidence of T2D in the Next Gen offspring.
An Anthropological Approach to the Islamic Turn in Indonesia's Regional Politics
Authors: Millie Julian
Published: August 2018

Existing analyses of the Islamic turn in regional Islamic politics in Indonesia have overlooked the possibility that these politics – often critiqued for their negative implications for minorities and vulnerable segments – are to some extent reflections of indigenous cultural dispositions. Drawing on the author's long-time ethnographic work in West Java, as well as recent anthropological theorising about public ethics in Islamic societies, the article identifies a significant correlation between, on the one hand, the practical forms and legislative outputs of the regional Islamic turn, and on the other, a characteristic notion of public decorum that is asserted in routines of embodied Islamic observance. The article notes that this extension of an embodied, practice-based public ethics into the political regimes of national life has created conflict with the disembodied civic order established in Indonesia's constitution and state ideology.
Amygdala GluN2B-NMDAR dysfunction is critical in abnormal aggression of neurodevelopmental origin induced by St8sia2 deficiency
Authors: Bacq Alexandre , Astori Simone , Gebara Elias , Tang Wei , Silva Bianca A. , Sanchez-Mut Jose , Grosse Jocelyn , Guillot de Suduiraut Isabelle , Zanoletti Olivia , Maclachlan Catherine , Knott Graham W. , Gräff Johannes , Sandi Carmen
Published: August 2018

Aggression is frequently observed in neurodevelopmental psychiatric disorders such as schizophrenia, autism, and bipolar disorder. Due to a lack of understanding of its underlying mechanisms, effective treatments for abnormal aggression are still missing. Recently, genetic variations in Sialyltransferase 2 (St8sia2) have been linked to these disorders and aggression. Here we identify abnormal aggressive behaviors and concomitant blunted fear learning in St8sia2 knockout (−/−) mice. It is worth noting that the amygdala of St8sia2−/− mice shows diminished threat-induced activation, as well as alterations in synaptic structure and function, including impaired GluN2B-containing NMDA receptor-mediated synaptic transmission and plasticity. Pharmacological rescue of NMDA receptor activity in the amygdala of St8sia2−/− mice with the partial agonist d-cycloserine restores synaptic plasticity and normalizes behavioral aberrations. Pathological aggression and associated traits were recapitulated by specific amygdala neonatal St8sia2 silencing. Our results establish a developmental link between St8sia2 deficiency and a pathological aggression syndrome, specify synaptic targets for therapeutic developments, and highlight d-cycloserine as a plausible treatment.
Author Correction: Thermodynamics of CuPt nanoalloys
Authors: Rossi K. , Pártay L. B. , Csányi G. , Baletto F.
Published: August 2018

A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.
Anomalously high value of Coulomb pseudopotential for the H5S2 superconductor
Authors: Kostrzewa Małgorzata , Szczęśniak Radosław , Kalaga Joanna K. , Wrona Izabela A.
Published: August 2018

The H5S2and H2S compounds are the two candidates for the low-temperature phase of compressed sulfur-hydrogen system. We have shown that the value of Coulomb pseudopotential (μ*) for H5S2([TC]exp = 36 K andp = 112 GPa) is anomalously high. The numerical results give the limitation from below toμ* that is equal to 0.402 (μ* = 0.589), if we consider the first order vertex corrections to the electron-phonon interaction). Presented data mean that the properties of superconducting phase in the H5S2compound can be understood within the classical framework of Eliashberg formalism only at the phenomenological level (μ* is the parameter of matching the theory to the experimental data). On the other hand, in the case of H2S it is not necessary to take high value of Coulomb pseudopotential to reproduce the experimental critical temperature relatively well (μ* = 0.15). In our opinion, H2S is mainly responsible for the observed superconductivity state in the sulfur-hydrogen system at low temperature.
Exosomes released from pancreatic cancer cells enhance angiogenic activities via dynamin-dependent endocytosis in endothelial cells in vitro
Authors: Chiba Mitsuru , Kubota Shiori , Sato Konomi , Monzen Satoru
Published: August 2018

Pancreatic cancer has the lowest 5 year survival rate among all cancers. Several extracellular factors are involved in the development and metastasis of pancreatic cancer to distant organs. Exosomes are lipid-bilayer, membrane-enclosed nanoparticles that are recognised as important mediators of cell-to-cell communications. However, the role of exosomes released from pancreatic cancer cells in tumour micro-environment remains unknown. Here, we show that exosomes released from pancreatic cancer PK-45H cells activate various gene expressions in human umbilical vein endothelial cells (HUVECs) byin vitroanalyses. In addition, these exosomes released from PK-45H cells promote phosphorylation of Akt and ERK1/2 signalling pathway molecules and tube formation via dynamin-dependent endocytosis in HUVECs. Our findings suggested that exosomes released from pancreatic cancer cells may act as a novel angiogenesis promoter.
Tightly binding valence electron in aluminum observed through X-ray charge density study
Authors: Sasaki Tomoaki , Kasai Hidetaka , Nishibori Eiji
Published: August 2018

Accurate and high reciprocal resolution experimental structure factors of aluminum were determined from a synchrotron powder X-ray diffraction data measured at 30 K with sinθ/λ < 2.31 Å−1. The structure factors have small deviations from independent atom model in sinθ/λ < 0.83 Å−1. Theoretical structure factors were prepared using density functional theoretical calculations by full potential linearized augmented plane wave method. The deviation between experimental and theoretical data was also observed at around sinθ/λ ≈ 0.4 Å−1. The charge density was determined by an extended Hansen-Coppens multipole modeling using experimental and theoretical structure factors. Charge density maxima at tetrahedral site were observed in both experimental and theoretical deformation density. The charge-density difference peaks indicating directional bonding formation were observed in the difference density between experiment and theory. The present study reveals tight binding like character of valence electron of aluminum. The fact will provide a crucial information for development of high-performance aluminum alloy.
Magnetic map navigation in a migratory songbird requires trigeminal input
Authors: Pakhomov Alexander , Anashina Anna , Heyers Dominik , Kobylkov Dmitry , Mouritsen Henrik , Chernetsov Nikita
Published: August 2018

Recently, virtual magnetic displacement experiments have shown that magnetic cues are indeed important for determining position in migratory birds; but which sensory system(s) do they use to detect the magnetic map cues? Here, we show that Eurasian reed warblers need trigeminal input to detect that they have been virtually magnetically displaced. Birds with bilaterally ablated ophthalmic branches of the trigeminal nerves were not able to re-orient towards their conspecific breeding grounds after a virtual magnetic displacement, exactly like they were not able to compensate for a real physical displacement. In contrast, sham-operated reed warblers re-oriented after the virtual displacement, like intact controls did in the past. Our results show that trigeminally mediated sensory information is necessary for the correct function of the reed warblers’ magnetic positioning system.
Pore size dependent cation adsorption in a nanoporous polymer film derived from a plastic columnar phase
Authors: Bhattacharjee Subham , Lugger Jody A. M. , Sijbesma Rint P.
Published: August 2018

Nanoporous polymer films were fabricated from a plastic columnar phase that showed pore size and shape (whether open or collapsed) dependent cation adsorption properties.
ExciTides: NTP-derived probes for monitoring pyrophosphatase activity based on excimer-to-monomer transitions
Authors: Wanat Przemyslaw , Kasprzyk Renata , Kopcial Michal , Sikorski Pawel J. , Strzelecka Dominika , Jemielity Jacek , Kowalska Joanna
Published: August 2018

We describe a new type of mononucleotide-derived fluorescent probe designed for monitoring pyrophosphatase activity based on excimer-to-monomer transitions.
Stereoselective aldol reactions using pseudoC2symmetric 1-benzyl-4-(trifluoromethyl)piperidine-2,6-dione
Authors: Inoue Yuta , Hatayama Takahiro , Kawasaki-Takasuka Tomoko , Agou Tomohiro , Kubota Toshio , Yamazaki Takashi
Published: August 2018

Crossed aldol reactions of the CF3-containing pseudoC2symmetric cyclic imide3were performed by way of the corresponding lithium and boron bisenolates to stereoselectively furnish the desired products4.
A semiconductor and fluorescence dual-mode room-temperature ammonia sensor achieved by decorating hydroquinone into a metal–organic framework
Authors: Li Yong-Peng , Li Shu-Ni , Jiang Yu-Cheng , Hu Man-Cheng , Zhai Quan-Guo
Published: August 2018

A semiconductor and fluorescence dual-mode MOF sensor exhibits extraordinary sensitivity, fast and single response, and good reusability for quantitative detection of ammonia vapor or liquid at room temperature.
Consistent supramolecular assembly arising from a mixture of components – self-sorting and solid solutions of chiral oxygenated trianglimines
Authors: Szymkowiak Joanna , Warżajtis Beata , Rychlewska Urszula , Kwit Marcin
Published: August 2018

The formation of trianglimines and their aggregates is stereoselective, and uniformly chiral macrocycles differing in chemical composition crystallize as solid solutions.
In-plane thermal transport in black phosphorene/graphene layered heterostructures: a molecular dynamics study
Authors: Liang Ting , Zhang Ping , Yuan Peng , Zhai Siping
Published: August 2018

We use non-equilibrium molecular dynamics simulations to study the in-plane thermal conductivities of black phosphorene/graphene heterostructures and single-layer black phosphorene in black phosphorene/graphene heterostructures.
Effect of microparticulation and xanthan gum on the stability and lipid digestion of oil-in-water emulsions stabilized by whey protein
Authors: Sun Chanchan , Liu Rui , Sheng Huanjing , Wang Ruijun , Zhang Zesheng , Zhao Jiang , Zhang Min
Published: August 2018

Since lipid digestion is an interfacial process, food emulsions are increasingly being seen as a mechanism for controlling lipid uptake.
Enhanced upconversion luminescence in LuPO4:Ln3+ phosphors via optically inert ions doping
Authors: Zhang Zongxue , Cao Renfei , Guo Linna , Li Peng , Liang Chenxi , Li Tiesheng
Published: August 2018

The UCL intensity of the Li+/Gd3+ co-doped LuPO4:20%Yb3+/1%Er3+/1%Ho3+ microparticles could be enhanced by 10.33-times while the emission color was not changed.
The facile synthesis of MoO3microsheets and their excellent gas-sensing performance toward triethylamine: high selectivity, excellent stability and superior repeatability
Authors: Jiang Wenhao , Wei Dongdong , Zhang Sufang , Chuai Xiaohong , Sun Peng , Liu Fangmeng , Xu Yan , Gao Yuan , Liang Xishuang , Lu Geyu
Published: August 2018

In this work, MoO3microsheets were successfully prepared by thermally oxidizing the MoO2nanospheres synthesized by a hydrothermal method.
One-pot bifunctionalization of unactivated alkenes, P(O)–H compounds, and N-methoxypyridinium salts for the construction of β-pyridyl alkylphosphonates
Authors: He Yu-Tao , Won Joonghee , Kim Jiyun , Park Bohyun , Kim Taehwan , Baik Mu-Hyun , Hong Sungwoo
Published: August 2018

An efficient phosphono-heteroarylation of unactivated alkenes was developed through a one-pot bifunctionalization process to give access to β-pyridylphosphine structural motifs.
Enhanced electrocatalytic performance of nickel diselenide grown on graphene toward the reduction of triiodide redox couples
Authors: Zhang Xiao , Zhang Haijun , Wang Xingyu , Zhou Xiaomeng
Published: August 2018

The promising activity of nickel diselenide (NiSe2) towards electrocatalysis has made it especially attractive in energy conversion fields.
A facile strategy for the synthesis of graphene/V2O5 nanospheres and graphene/VN nanospheres derived from a single graphene oxide-wrapped VOx nanosphere precursor for hybrid supercapacitors
Authors: Sun Wei , Ji Xiujie , Gao Guohua , Wu Guangming
Published: August 2018

It remains a challenge to develop a facile approach to prepare positive and negative electrode materials with good electrochemical performance for application in hybrid supercapacitors.
Blue and red wavelength resolved impedance response of efficient perovskite solar cells
Authors: Prochowicz Daniel , Tavakoli Mohammad Mahdi , Turren-Cruz Silver-Hamill , Pandey Kavita , Saliba Michael , Yadav Pankaj
Published: August 2018

The identification of recombination centers in perovskite solar cells is highly challenging.
DMA study of water's glass transition in nanoscale confinement
Authors: Soprunyuk V. , Schranz W.
Published: August 2018

Dynamic mechanical analysis (DMA) measurements of water confined in nanoporous silica have been performed as a function of temperature and frequency for different pore sizes (2.5–10 nm) at heating and cooling.
Metabolic engineering of glycosylated polyketide biosynthesis
Authors: Pandey Ramesh Prasad , Parajuli Prakash , Sohng Jae Kyung
Published: August 2018

Microbial cell factories are extensively used for the biosynthesis of value-added chemicals, biopharmaceuticals, and biofuels. Microbial biosynthesis is also realistic for the production of heterologous molecules including complex natural products of plant and microbial origin. Glycosylation is a well-known post-modification method to engineer sugar-functionalized natural products. It is of particular interest to chemical biologists to increase chemical diversity of molecules. Employing the state-of-the-art systems and synthetic biology tools, a range of small to complex glycosylated natural products have been produced from microbes using a simple and sustainable fermentation approach. In this context, this review covers recent notable metabolic engineering approaches used for the biosynthesis of glycosylated plant and microbial polyketides in different microorganisms. This review article is broadly divided into two major parts. The first part is focused on the biosynthesis of glycosylated plant polyketides in prokaryotes and yeast cells, while the second part is focused on the generation of glycosylated microbial polyketides in actinomycetes.
Preference for Infant-Directed Speech in Infants With Hearing Aids: Effects of Early Auditory Experience
Authors: Wang Yuanyuan , Bergeson Tonya R. , Houston Derek M.
Published: August 2018

Purpose

It is well established that (a) infants prefer listening to infant-directed speech (IDS) over adult-directed speech (ADS), and (b) IDS facilitates speech, language, and cognitive development, compared with ADS. The main purpose of this study was to determine whether infants with hearing aids (HAs), similar to their peers with normal hearing (NH), show a listening preference for IDS over ADS.

Method

A total of 42 infants participated in the study. In Experiment 1, 9 infants with hearing loss, who had approximately 12 months of experience (mean chronological age of 17.57 months) with HAs, and 9 infants with NH, who had similar chronological age (17.54 months), were tested. In Experiment 2, 10 infants with hearing loss, who had approximately 4 months of experience (mean chronological age of 9.86 months) with HAs, and 14 infants with NH, who had similar chronological age (9.09 months), were tested. Infants were tested on their listening preference in 3 randomized blocks: IDS versus silence, ADS versus silence, and IDS versus ADS blocks, using the central fixation preference procedure.

Results

Experiment 1 showed that infants with HAs, similar to their peers with NH, listened longer to both IDS and ADS relative to silence; however, neither infants with HAs nor infants with NH showed a listening preference for IDS over ADS. In Experiment 2, both infants with HAs and infants with NH showed a listening preference for IDS and ADS relative to silence; in addition, both groups preferred listening to IDS over ADS.

Conclusions

Infants with HAs appear to have sufficient access to the acoustic cues in the speech that allow them to develop an age-equivalent IDS preference. This may be attributed to a combination of being able to use the hearing they do have before receiving HAs and early device fitting. Given previously demonstrated positive associations between IDS preference and language development, this research encourages early interventions focusing on maximizing early auditory experience in infants with hearing loss.

Supplemental Material

https://doi.org/10.23641/asha.6906365
Ubiquitous ram pressure stripping in the Coma cluster of galaxies
Authors: Gavazzi G. , Consolandi G. , Gutierrez M. L. , Boselli A. , Yoshida M.
Published: August 2018

We report the detection of Hα trails behind three new intermediate-mass irregular galaxies in the NW outskirts of the nearby cluster of galaxies Abell 1656 (Coma). Hints that these galaxies possess an extended component were found in earlier, deeper Hα observations carried out with the Subaru telescope. However the lack of a simultaneous r-band exposure, together with the presence of strong stellar ghosts in the Subaru images, prevented us from quantifying the detections. We therefore devoted one full night of Hα observation to each of the three galaxies using the San Pedro Martir 2.1 m telescope. One-sided tails of Hα emission of 10–20 kpc projected size were detected, suggesting an ongoing ram pressure stripping event. We added these 3 new sources of extended ionized gas to the 12 previously found, NGC 4848, and NGC 4921 whose ram pressure stripping is certified by HI asymmetry. This brings the number sources with Hα trails to 17 gaseous tails out of 27 (63%) late-type galaxies (LTG) members of the Coma cluster with direct evidence of ram pressure stripping. The 27 LTG galaxies, among these the 17 with extended Hα tails, have kinematic properties that are different from the rest of the early-type galaxy population of the core of the Coma cluster, as they deviate in the phase-space diagram |ΔV|/σ versus r/R200.
A New Explanation for the Color Variety of Photons
Authors: Saleh Gh. , Faraji M. J. , Alizadeh R. , Dalili A.
Published: August 2018

This new explanation is based onWave-Particle DualityandNewtonian Lawsand represents a unique definition of a three-dimensional motion for the photon, whose dual behavior is partly explained by thedouble-slit experimentof Thomas Young, who represents the photon's motion as a wave, and by thePhotoelectric effect, in which the photon is considered as a particle. However, for scientists, the photon's true motion is unclear. In this article, we define a new type of motion for photons to solve both this ambiguity and the difficulty of presenting a three-dimensional trajectory for the photon's motion, and present a new formula to calculate its energy. In addition, because we believe in the helical motion of photons, where r is the gyroradius, we believe that their color is an effect of the order of magnitude ofr. We present real examples that prove our energy formula.
Solving Bateman Equation for Xenon Transient Analysis Using Numerical Methods
Authors: Ding Zechuan
Published: August 2018

After a nuclear reactor is shutdown, xenon-135, an isotope with a very high thermal neutron absorption cross-section, will build up and reduce the reactivity considerably for a while. This is known as poisoning. However, the concentration xenon-135 would gradually decrease through decaying or absorbing neutron, making it necessary to suppress the reactivity in order to prevent the reactor to go critical or supercritical. Thus, it is important to predict the relationship between xenon poisoning and time after the reactor is shutdown to ensure the safety of the reactor. This paper reports the research on the prediction of xenon poisoning in a hypothetical nuclear reactor after it is shut down. In order to make the prediction, the Bateman equations of xenon (Xe) and iodine (I), which is of the form of an Ordinary Differential Equation (ODE) system, need to be solved. Two different methods, the fourth-order Runge-Kutta method and the matrix exponential method, were applied to solve the ODE system with MATLAB codes. The accuracies and computational efficiencies of the two method is also studied and compared.
Transformation Thermodynamics with Arbitrarily Shaped Non-Conformal Objects and Coatings
Authors: Ji Qingxiang , Fang Guodong , Liang Jun
Published: August 2018

In this paper we apply transformation optics theory to thermodynamics and design thermal cloaks and concentrators with arbitrarily shaped non-conformal objects and coatings. Expressions of the required material parameters are derived analytically and then validated by numerical simulations. We apply this method to design a thermal cloak which can guide the heat flow around the inner domain without perturbation to external thermal fields. In this way, the object inside the inner domain is protected from the invasion of external heat fluxes. In contrast, a concentrator is designed to concentrate heat flows into a small region without disturbing outside temperature fields, which can considerably enhance the heat density in the designed domain. The proposed method extends the design flexibility in manipulating heat flux and will find wide applications in thermal protection systems, solar cells and so on.
Comparison Study of Dynamic Elastic Moduli of Cement Mortar and No-cement Slag Based Cementitious Mortar Activated with Calcined Dolomite with Impulse Excitation Technique
Authors: Djayaprabha Herry Suryadi , Chang Ta-Peng , Shih Jeng-Ywan
Published: August 2018

This paper presents the comparison of an experimental investigation on compressive strength and dynamic elastic moduli of mortars made of Ordinary Portland Cement (OPC) and ground granulated blast furnace slag (GGBFS) incorporating with calcined dolomite. Dolomite powder calcined at temperature 900°C emerged as a GGBFS activator for producing cementitious mortar binder. In this study, no-cement mortar is made by activating GGBFS with calcined dolomite by a fixed amount of 20 wt%. The compressive strengths and dynamic elastic moduli were measured at 7 and 28 days. Comparing with cement mortar, the compressive strength of no-cement mortar was found about 54.4 and 46.9% lower at ages of 7 and 28 days, respectively. Non-destructive evaluation of the dynamic elastic moduli was investigated by impulse excitation technique (IET). It measures the resonant frequencies of induced vibration signal in the flexural and torsional mode for determining the dynamic Young's modulus and the dynamic shear modulus. The Poisson's ratio was calculated by the dynamic Young's modulus and the dynamic shear modulus relationship. The results showed that the 28-day dynamic Young's and shear moduli of cement mortar were 31.91 and 14.43 GPa, respectively. The dynamic Young's and shear moduli of no-cement mortar were lower by 23.3 and 15.2% than that of cement mortar at the age of 28 days. The obtained results showed that the 28-day Poisson's ratio of no-cement mortar had a wider range between 0.177 and 0.209 than that of cement mortar which ranged from 0.180 to 0.185.
Parameters Analysis for Bending Properties of Externally Prestressed Concrete Beam with Corrugated Steel Webs
Authors: Xu Qiang , Song Jianyong , Feng Jianxiang , Du Jinsheng
Published: August 2018

Based on the bending moment-curvature method, a calculation program for the whole bending process of externally prestressed concrete beam with corrugated steel webs is compiled and parametric analysis is conducted. Considering the nonlinearity of material, this procedure can calculate the whole bending process of externally prestressed composite beam with corrugated steel webs under different load, cross section, and external tendons profiles and output the cross section strain of concrete and ordinary reinforcements, stress increment of external prestressing tendons and mid-span deflection. The results show that the tension steel area has the greatest impact on the bending performance of simply supported externally prestressed composite beam with corrugated steel webs; The second is concrete strength and effective external prestress; The compression steel area has limited impact on the bending performance of such beams. The results can provide a reference for design of the beam.
Effect of Ti Addition to Age Hardening Response of Al-10Zn-6MgxTi Alloy Produced by Squeeze Casting
Authors: Nurcahyaningsih Dwi Ayu , Wijanarko Risly , Angela Irene , Tiara Sofyan Bondan
Published: August 2018

This research focused on investigating the effects of Ti addition on the age hardening response of Al 7xxx alloy for Organic Rankine Cycle (ORC) turbine impeller application in power plant generators. Al-10Zn-6Mg wt. % alloys were produced by squeeze casting with 0.02, 0.05, and 0.25 wt. % Ti addition. As-cast samples were homogenized at 400 °C for 4 h. Solution treatment was conducted at 440 °C for 1 h, followed by quenching and ageing at 130 °C for 200 h. Age hardening result was observed using Rockwell B hardness measurement. Other characterizations included impact testing, STA, optical microscopy, and SEM-EDS. Results showed that the addition of Ti in all content variations increased the as-cast hardness due to the diminution of secondary dendrite arm spacing (SDAS) values of the alloy. Ageing at 130 °C strengthened the alloys, however the addition of Ti was not found to affect neither peak hardness nor impact values of the alloy. Identities of second phases formed during solidification were found to be T (Mg32(Al,Zn)49), β (Al8Mg5), and TiAl3, while precipitates produced during ageing were GP Zone, η′, and η (MgZn2).
Study of Mathematical Models in Hot Air Drying of Herbs in Herbal Compress Ball
Authors: Wongpanit Boochita , Chotikamas Sumitta , Roddecha Supacharee , Tantayotai Prapakorn , Sriariyanun Malinee
Published: August 2018

Herbal compress ball is currently one of important products of Thailand for exporting sales worldwide. It is used in Thai traditional medical treatment and spa to reduce muscle pain and relaxation. This research aimed to generate the mathematical models representing the behaviors of herbs in hot air drying to extend shelf life for exporting sales. Here, six types of herbs, including Prai (Zingiber cassumunar Roxb.), Turmeric (Curcuma longa Linn.), Lemongrass (Cymbopogon citratus), Kaffir lime (Citrus hystrix), Soap Pod leaves (Acacia concinna) and Tamarind Leaves (Tamarindus indica Linn.) were dried in different temperature at 60, 70, and 80 °C. Fours drying models, Page, Henderson and Pabis, and Logarithmic and Fick's second law equation were applied with experimental data of drying herbs to predict the rate of diffusion of water. The results showed that the Page model is the most suitable model due to the highest decision coefficient (R2) but the lowest Root Mean Square Error (RMSE). The effective moisture diffusivity (Deff) of the herbs in herbal compress ball was increased with increased the drying temperature. The size of the herb particle translated inversely with effective moisture diffusivity (Deff) value.
Effect of Roasting and Kneading on Antioxidant Activity and Consumer Acceptance towards Asiatic Pennywort Tea
Authors: Ploenkutham Rungnattakan , Sripromma Preeyapa , Amornraksa Suksan , Yasurin Patchanee , Soontrunnarudrungsri Aussama
Published: August 2018

Nowadays, population have more age and longer life than ancient people which the World Health Organization (WHO) reported that the proportion of the global population will become 'Aging Society' during healthier lifestyles, new advance technologies especially in medical manufacture. This study was aimed to study attitude, behavior and opinion of elderly people towards herbal tea products and to optimize preparation, procedure and process of Asiatic Pennywort tea. According of the study, there are 100% of Thai people ever consume herbs and herbal tea, they consume as beverage. Half of consumer surveys are no chronic health conditions. Safety of product is the most factors that effect to purchasing decision. The consumers are agree (73%) in nutrition value that presented on label as it's clamed on the package. Result from this study shown that roasted and kneading process is highest mean score from consumer's preference 7.07±1.51 (P<0.05) that this method is significantly different in total phenolic content and Ferric reducing antioxidant potential assay but not in DPPH radical scavenging which is highest mean of second significantly level.
Dossier : La fabrique de la compensation écologique : controverses et pratiques – Regards sur le contentieux français relatif aux mesures compensatoires : quarante ans d’attentes, de déceptions et d’espoirs portés par la jurisprudence
Authors: Lucas Marthe
Published: August 2018

Dernière phase du triptyque « éviter, réduire, compenser », les mesures compensatoires visent à répondre aux dommages environnementaux résiduels causés par un projet qui ont été mis à jour par l’étude d’impact. Objet de négociation, ces mesures sont aujourd’hui devenues un argument régulièrement invoqué par les opposants au projet qui saisissent le juge administratif à des fins d’annulation de celui-ci. Le présent article apporte un éclairage sur le contentieux français auquel a donné lieu la compensation écologique au cours des quarante dernières années. Alors qu’aucune définition juridique de cette notion n’existait avant 2016, il est à regretter que le juge administratif ne l’ait pas clarifiée en formulant un ou des arrêts de principe. Le juge sort depuis peu de sa réserve sous l’impulsion des requérants, mais également de l’évolution des textes qui l’invitent à affermir son contrôle sur les éléments factuels de la mise en œuvre des mesures compensatoires. Ce mouvement jurisprudentiel pourrait renforcer la dimension préventive de ces mesures, car jusqu’ici l’annulation d’un projet dont les effets environnementaux seraient excessifs se justifie rarement au regard de la seule insuffisance de la compensation écologique.
Diagnostik und operative Therapie der Otosklerose
Authors: Metasch Marie-Luise , Plontke Stefan K. , Zirkler Jonas , Zahnert Thomas
Published: August 2018

Die Otosklerose ist eine für den HNO-Arzt/Ärztin wichtige, oft in (Differenzial-)Diagnostik und Therapie anspruchsvolle Erkrankung. Wenngleich bis heute eine
kausale Therapieoption nicht besteht, kann bei richtiger Diagnosestellung eine operative oder apparative Hörrehabilitation mit sehr hohen Erfolgschancen in
Aussicht gestellt werden.
Short-Term Measurement Repeatability of a Simplified Intravoxel Incoherent Motion (IVIM) Analysis for Routine Clinical Diffusion-Weighted Imaging in Malignant Liver Lesions and Liver Parenchyma at 1.5 T
Authors: Pieper Claus , Sprinkart Alois , Kukuk Guido , Mürtz Petra
Published: August 2018

Objectives To evaluate measurement repeatability of parameters derived from simplified intravoxel incoherent motion (IVIM) analysis of diffusion-weighted imaging (DWI) using 3 b-values.

Materials and Methods 24 patients (16 male, 8 female, mean age: 67 years) with hepatic malignancy (HCC: 10, metastases: 14) underwent 29 liver MRI examinations at 1.5 T. Respiratory-triggered DWI (b = 0, 50, 800 s/mm2) was acquired twice. Parameter maps of the apparent diffusion coefficient ADC(0,800), estimated diffusion coefficient D' and perfusion fraction f' were calculated. Measurement repeatability for a region of interest (ROI) placed in one lesion and liver parenchyma per lobe was assessed by intra-session variation coefficients (CV).

Results 86 ROIs (43 lesions, 43 parenchymas) were analyzed. Parameters did not significantly differ between measurements. Repeatability was excellent for ADC(0,800) and D' and good for f' in parenchyma (CVs: 7.3 %, 9.8 %, 13.0 %) and lesions (CVs: 7.5 %, 8.5 %, 11.0 %). Differences in CV-values between liver and lesions were not significant. Repeatability was better for the right than for the left lobe by tendency, for parenchyma (CVs: 6.4 % vs 8.4 %, 8.8 % vs 10.9 %, 10.5 % vs 16.0 %) and for lesions (CVs: 6.9 % vs 8.1 %, 7.5 % vs 9.5 %, 9.5 % vs 12.7 %).

Conclusion Measurement repeatability is excellent for ADC(0,800) and D' values and good for f' values using the simplified IVIM approach, both in lesions and liver parenchyma. Repeatability was better for lesions in the right compared to the left liver lobe.

Key points: 

Citation Format
Acute Boldine Treatment Induces Anti-convulsant Effects in Mice through its Antioxidant Activity
Authors: Moezi Leila , Yahosseini Siranoush , Jamshizadeh Akram , Pirsalami Fateme
Published: August 2018

Boldine is a natural antioxidant that exhibits some important pharmacological properties, which is due to its free radical scavenging effects. And at the same time, reactive oxygen species (ROS) has an important role in pathogenesis of seizure; hence, reducing it via antioxidants like boldine seems to be effective in treating seizure. This study was designed to investigate whether acute treatment with boldine could alter seizures induced by pentylenetetrazole or electroshock in mice. We also evaluated to see if boldine’s antioxidant properties play a role in its anti-convulsant activity. Boldine acute administration increased time latencies to the onset of myoclonic jerks and clonic seizures induced by intraperitoneal pentylenetetrazole model. Moreover, boldine increased seizure threshold induced by intravenous infusion of pentylenetetrazole. Additionally, acute doses of boldine reduced the duration of tonic hind-limb extension in the electroshock-induced seizure model. Non-effective dose of vitamin C (as an antioxidant agent) and boldine had anti-convulsant effect in intraperitoneal pentylenetetrazole, intravenous pentylenetetrazole and electroshock models. Boldine administration increased glutathione and superoxide dismutase levels in mice whole brain. The result showed boldine anti-seizure properties, which might be due to its antioxidant activity.
Management of Portal Hypertension in the Pediatric Population: A Primer for the Interventional Radiologist
Authors: Rajeswaran Shankar , Young Victoria
Published: August 2018

Interventional radiology's role in the management of portal hypertension in the pediatric population differs from the management of adult portal hypertension. In the pediatric population, portal hypertension is frequently secondary to thrombosis and cavernous transformation of the extrahepatic portion of the portal vein. Transjugular intrahepatic portosystemic shunt can be utilized to manage portal hypertension in children with intrinsic liver disease that results in cirrhosis and portal hypertension, and is often used as a bridge to transplant. While technically feasible in extrahepatic portal vein occlusion, the sequelae of portosystemic shunting are less desirable in a child. The Meso-Rex bypass procedure, which represents the mainstay of management for pediatric portal hypertension, provides surgical relief of extrahepatic portal vein obstruction and restores mesenteric venous blood flow to the liver. This article aims to review management of portal hypertension in children as it pertains to the interventional radiologist, including preoperative assessment, postoperative evaluation, and the management of complications of the Meso-Rex bypass.
Preoperative Transjugular Intrahepatic Portosystemic Shunt Placement for Extrahepatic Abdominal Surgery
Authors: Philip Michelle , Thornburg Bartley
Published: August 2018

Extrahepatic abdominal surgery in patients with portal hypertension is associated with a high rate of perioperative complications and death due to the increased risk of liver failure, perioperative bleeding, and ascites. One proposed method to facilitate surgery in these patients is with preoperative placement of a transjugular intrahepatic portosystemic shunt (TIPS). By decompressing the portal circulation, this presurgical measure would theoretically decrease the potential for bleeding and improve the ability to control ascites in the perioperative and postoperative period. This article reviews the use of TIPS prior to abdominal surgery in patients with portal hypertension.
Transjugular Intrahepatic Portosystemic Shunt Placement for Refractory Ascites: Review and Update of the Literature
Authors: Burgos Ana , Thornburg Bartley
Published: August 2018

Ascites is the most common complication of cirrhosis, impairs quality of life, and carries a poor prognosis. Transjugular intrahepatic portosystemic shunt (TIPS) is a well-validated therapy for refractory ascites and is superior at reducing the accumulation of fluid compared with paracentesis. More recent evidence has shown that TIPS also provides an improved transplant-free survival compared with paracentesis. To maximize the clinical efficacy and survival advantage, proper patient selection is crucial. While current guidelines recommend that elective TIPS for ascites should be performed only in patients with MELD ≤ 18, recent literature suggests that elective TIPS safely and effectively controls ascites and potentially provides a survival advantage in patients with higher MELD scores (≤ 24). The evolution of these findings likely represents the combination of improved medical management of cirrhotic patients, improved devices, and a better knowledge of selection criteria for potential TIPS patients. This article will review the pathophysiology and management of ascites, with a focus on the evidence supporting TIPS placement for refractory ascites.
Reference Echocardiographic Measurements in Very Low Birth Weight Preterm Infants
Authors: Collins C. , Drew S. , Holberton J. , Calado C.
Published: August 2018

Background Echocardiography is an important technique in neonatal care. The heart of a premature baby is known to be different from that of a term baby, and there is a paucity of literature regarding reference cardiac measurements for this population, especially for the very low birth weight (VLBW) infants.

Objective We aimed to present reference values for echocardiography in VLBW preterm infants.

Study Design This was a retrospective observational study taking place over an 11-year period. We collected data from the reports of echocardiographic examinations performed in a population of preterm infants born with gestational age ≤ 32 weeks and birth weight (BW) ≤ 1,500 g in the first week of life.

Results Our study population included 1,244 preterm infants. We found BW to be an adequate and practical variable to use in relation to the cardiac measurements. We propose reference values for seven cardiac measurements presented in tables for each 100 g weight subgroup.

Conclusion Our study, to the best of our knowledge, has the largest sample of VLBW preterm infants and provides easy-to-use information on cardiac measurements by echocardiography for both pediatric cardiologists and neonatologists.
Germanium microlasers on metallic pedestals
Authors: Elbaz A. , El Kurdi M. , Aassime A. , Sauvage S. , Checoury X. , Sagnes I. , Baudot C. , Boeuf F. , Boucaud P.
Published: August 2018

Strain engineering is a powerful approach in micro- and optoelectronics to enhance carrier mobility, tune the bandgap of heterostructures, or break lattice symmetry for nonlinear optics. The dielectric stressors and bonding interfaces used for strain engineering in photonics can however limit thermal dissipation and the maximum operation temperature of devices. We demonstrate a new approach for enhanced thermal dissipation with stressor layers by combining metals and dielectrics. The method is applied to the germanium semiconductor. All-around tensile-strained germanium microdisks have been fabricated with metallic pedestals. The transferred tensile strain leads to a germanium thin film with a direct bandgap. Under continuous wave optical pumping, the emission of the whispering gallery modes is characterized by a threshold and an abrupt linewidth narrowing by a factor larger than 2. The occurrence of stimulated emission is corroborated by modeling of the optical gain. This demonstrates lasing with pure germanium microdisks.
Chaos in homeostatically regulated neural systems
Authors: Nicola Wilten , Hellyer Peter John , Campbell Sue Ann , Clopath Claudia
Published: August 2018

Low-dimensional yet rich dynamics often emerge in the brain. Examples include oscillations and chaotic dynamics during sleep, epilepsy, and voluntary movement. However, a general mechanism for the emergence of low dimensional dynamics remains elusive. Here, we consider Wilson-Cowan networks and demonstrate through numerical and analytical work that homeostatic regulation of the network firing rates can paradoxically lead to a rich dynamical repertoire. The dynamics include mixed-mode oscillations, mixed-mode chaos, and chaotic synchronization when the homeostatic plasticity operates on a moderately slower time scale than the firing rates. This is true for a single recurrently coupled node, pairs of reciprocally coupled nodes without self-coupling, and networks coupled through experimentally determined weights derived from functional magnetic resonance imaging data. In all cases, the stability of the homeostatic set point is analytically determined or approximated. The dynamics at the network level are directly determined by the behavior of a single node system through synchronization in both oscillatory and non-oscillatory states. Our results demonstrate that rich dynamics can be preserved under homeostatic regulation or even be caused by homeostatic regulation.
Drainage, rebound and oscillation of a meniscus in a tube
Authors: Marston Jeremy , Toyofuku Garrett , Li Chao , Truscott Tadd , Uddin Jamal
Published: August 2018

In this paper, the drainage and subsequent rebound of a liquid column in a cylindrical tube is examined experimentally and theoretically. When liquid is drawn up into a capillary and then released under gravity, inertia allows the meniscus to overshoot the equilibrium capillary rise height. The meniscus then rebounds up the tube, again overshooting the equilibrium height and undergoes oscillation. By varying both the immersion depth and radius of the tube, one can observe rich dynamical behavior, with the most dramatic being the formation of a fast liquid jet, barely visible to the naked eye but easily captured with high-speed video. In addition to the flow separation caused by the sudden expansion at the end of the tube, this jet serves as a mechanism of energy dissipation. Some qualitative differences between the works of Quere et al. [“Rebounds in a capillary tube,” Langmuir 15, 3679–3682 (1999)] and Lorenceau et al. [“Gravitational oscillations of a liquid column in a pipe,” Phys. Fluids 14(6), 1985–1992 (2002)] and the present experiment are observed and discussed. A critical condition for oscillatory behavior is derived theoretically and matches well with the experimental observation. Once in the oscillatory regime, both the maximum depth below and the maximum rebound height above the equilibrium level are investigated by performing a systematic sweep through the relevant parameter space, incorporating the initial meniscus height, immersion depth, tube radius, and fluid properties. Lastly, the characteristic period of oscillation, tp, is assessed and found to be largely independent of fluid viscosity, and could be reasonably well-collapsed by a single curve whereby tp∼hi, where hi is the tube immersion depth.