bluuebunny/crossref_metadata_2025 huggingface dataset:
The orphan GPR50 receptor promotes constitutive TGFβ receptor signaling and protects against cancer development
Authors: Wojciech Stefanie , Ahmad Raise , Belaid-Choucair Zakia , Journé Anne-Sophie , Gallet Sarah , Dam Julie , Daulat Avais , Ndiaye-Lobry Delphine , Lahuna Olivier , Karamitri Angeliki , Guillaume Jean-Luc , Do Cruzeiro Marcio , Guillonneau François , Saade Anastasia , Clément Nathalie , Courivaud Thomas , Kaabi Nawel , Tadagaki Kenjiro , Delagrange Philippe , Prévot Vincent , Hermine Olivier , Prunier Céline , Jockers Ralf
Published: March 2018

Transforming growth factor-β (TGFβ) signaling is initiated by the type I, II TGFβ receptor (TβRI/TβRII) complex. Here we report the formation of an alternative complex between TβRI and the orphan GPR50, belonging to the G protein-coupled receptor super-family. The interaction of GPR50 with TβRI induces spontaneous TβRI-dependent Smad and non-Smad signaling by stabilizing the active TβRI conformation and competing for the binding of the negative regulator FKBP12 to TβRI. GPR50 overexpression in MDA-MB-231 cells mimics the anti-proliferative effect of TβRI and decreases tumor growth in a xenograft mouse model. Inversely, targeted deletion of GPR50 in the MMTV/Neu spontaneous mammary cancer model shows decreased survival after tumor onset and increased tumor growth. Low GPR50 expression is associated with poor survival prognosis in human breast cancer irrespective of the breast cancer subtype. This describes a previously unappreciated spontaneous TGFβ-independent activation mode of TβRI and identifies GPR50 as a TβRI co-receptor with potential impact on cancer development.
Structure and evolution of the Fam20 kinases
Authors: Zhang Hui , Zhu Qinyu , Cui Jixin , Wang Yuxin , Chen Mark J. , Guo Xing , Tagliabracci Vincent S. , Dixon Jack E. , Xiao Junyu
Published: March 2018

The Fam20 proteins are novel kinases that phosphorylate secreted proteins and proteoglycans. Fam20C phosphorylates hundreds of secreted proteins and is activated by the pseudokinase Fam20A. Fam20B phosphorylates a xylose residue to regulate proteoglycan synthesis. Despite these wide-ranging and important functions, the molecular and structural basis for the regulation and substrate specificity of these kinases are unknown. Here we report molecular characterizations of all three Fam20 kinases, and show that Fam20C is activated by the formation of an evolutionarily conserved homodimer or heterodimer with Fam20A. Fam20B has a unique active site for recognizing Galβ1-4Xylβ1, the initiator disaccharide within the tetrasaccharide linker region of proteoglycans. We further show that in animals the monomeric Fam20B preceded the appearance of the dimeric Fam20C, and the dimerization trait of Fam20C emerged concomitantly with a change in substrate specificity. Our results provide comprehensive structural, biochemical, and evolutionary insights into the function of the Fam20 kinases.
Coupling of oceanic carbon and nitrogen facilitates spatially resolved quantitative reconstruction of nitrate inventories
Authors: Glock Nicolaas , Erdem Zeynep , Wallmann Klaus , Somes Christopher J. , Liebetrau Volker , Schönfeld Joachim , Gorb Stanislav , Eisenhauer Anton
Published: March 2018

Anthropogenic impacts are perturbing the global nitrogen cycle via warming effects and pollutant sources such as chemical fertilizers and burning of fossil fuels. Understanding controls on past nitrogen inventories might improve predictions for future global biogeochemical cycling. Here we show the quantitative reconstruction of deglacial bottom water nitrate concentrations from intermediate depths of the Peruvian upwelling region, using foraminiferal pore density. Deglacial nitrate concentrations correlate strongly with downcore δ13C, consistent with modern water column observations in the intermediate Pacific, facilitating the use of δ13C records as a paleo-nitrate-proxy at intermediate depths and suggesting that the carbon and nitrogen cycles were closely coupled throughout the last deglaciation in the Peruvian upwelling region. Combining the pore density and intermediate Pacific δ13C records shows an elevated nitrate inventory of >10% during the Last Glacial Maximum relative to the Holocene, consistent with a δ13C-based and δ15N-based 3D ocean biogeochemical model and previous box modeling studies.
Erratum: Electric discharge during electrosurgery
Authors: Shashurin Alexey , Scott David , Zhuang Taisen , Canady Jerome , Beilis Isak I. , Keidar Michael
Published: March 2018

Scientific Reports 5: Article number: 9946; published online: 16 April 2015; updated: 19 March 2018. The original PDF version of this Article contained a typographical error in the volume number ‘5’ was incorrectly given as ‘4’. This error has now been corrected in the PDF version; the HTML version was correct from the time of publication.
Erratum: Segregation of information about emotional arousal and valence in horse whinnies
Authors: Briefer Elodie F. , Maigrot Anne-Laure , Mandel Roi , Briefer Freymond Sabrina , Bachmann Iris , Hillmann Edna
Published: March 2018

Scientific Reports 5: Article number: 9989; published online: 21 April 2015; updated: 19 March 2018. The original version of this Article contained a typographical error in the volume number ‘5’ was incorrectly given as ‘4’. This error has now been corrected in the PDF and HTML versions of the Article.
Erratum: Higher glomerular filtration rate is related to insulin resistance but not to obesity in a predominantly obese non-diabetic cohort
Authors: Naderpoor Negar , Lyons Jasmine G. , Mousa Aya , Ranasinha Sanjeeva , de Courten Maximilian P. J. , Soldatos Georgia , de Courten Barbora
Published: March 2018

Correction to: Scientific Reports 7: Article number: 45522; published online: 03 April 2017; updated: 19 March 2018 In the original version of this Article, the authors Maximilian P. J. de Courten and Barbora de Courten were incorrectly indexed. These errors have now been corrected.
Direct growth of 2D nickel hydroxide nanosheets intercalated with polyoxovanadate anions as a binder-free supercapacitor electrode
Authors: Gunjakar Jayavant L. , Inamdar Akbar I. , Hou Bo , Cha SeungNam , Pawar S. M. , Abu Talha A. A. , Chavan Harish S. , Kim Jongmin , Cho Sangeun , Lee Seongwoo , Jo Yongcheol , Kim Hyungsang , Im Hyunsik
Published: March 2018

Layered Ni(OH)2 intercalated with polyoxovanadate anions was built using a chemical solution deposition method.
ZnO/MoX2 (X = S, Se) composites used for visible light photocatalysis
Authors: Wang Guangzhao , Yuan Hongkuan , Chang Junli , Wang Biao , Kuang Anlong , Chen Hong
Published: March 2018

The ZnO/MoS2 (ZnO/MoSe2) heterostructures with the strain of –2% (+2%) have suitable bandgap and band edge position for hydrogen production via visible light photocatalytic water splitting.
Mechanical response of bilayer silicene nanoribbons under uniaxial tension
Authors: Chávez-Castillo M. R. , Rodríguez-Meza M. A. , Meza-Montes L.
Published: March 2018

Ghost vacancy effect on the stress distribution of bilayer silicene nanoribbons.
EUV photofragmentation study of hybrid nonchemically amplified resists containing antimony as an absorption enhancer
Authors: Moura Cleverson Alves da Silva , Belmonte Guilherme Kretzmann , Reddy Pulikanti Guruprasad , Gonslaves Kenneth E. , Weibel Daniel Eduardo
Published: March 2018

Understanding the EUV photofragmentation mechanism in a highly sensitive hybrid n-CAR containing SbF6− as an absorption enhancer.
Fabrication of a superhydrophobic surface with underwater air-retaining properties by electrostatic flocking
Authors: Zheng Yawen , Zhou Xiang , Xing Zhiqi , Tu Tianmin
Published: March 2018

A flocking sample with underwater air-trapping abilities mimicking the Salvinia molesta leaf was fabricated and evaluated.
Preparation and investigation of highly selective solid acid catalysts with sodium lignosulfonate for hydrolysis of hemicellulose in corncob
Authors: Li Xun , Shu Fengyao , He Chao , Liu Shuna , Leksawasdi Noppol , Wang Qiong , Qi Wei , Alam Md. Asraful , Yuan Zhenhong , Gao Yi
Published: March 2018

A novel carbon-based catalyst with high catalytic ability and xylose selectivity was prepared from sodium lignosulfonate.
White zein colloidal particles: synthesis and characterization of their optical properties on the single particle level and in concentrated suspensions
Authors: de Boer F. Y. , Kok R. N. U. , Imhof A. , Velikov K. P.
Published: March 2018

Driven by the growing interest in using natural ingredients in food and beverages, novel plant protein-based particles are developed as all natural, edible white colorant and clouding agent.
Additive-free Li4Ti5O12 thick electrodes for Li-ion batteries with high electrochemical performance
Authors: Sotomayor M. E. , Torre-Gamarra C. de la , Bucheli W. , Amarilla J. M. , Varez A. , Levenfeld B. , Sanchez J.-Y.
Published: March 2018

Additive-free LTO ceramic anodes (thickness ∼500 μm) with high volumetric discharge capacity were prepared by powder extrusion moulding.
Solid state p-type dye sensitized NiO–dye–TiO2 core–shell solar cells
Authors: Tian Lei , Föhlinger Jens , Zhang Zhibin , Pati Palas Baran , Lin Junzhong , Kubart Tomas , Hua Yong , Sun Junliang , Kloo Lars , Boschloo Gerrit , Hammarström Leif , Tian Haining
Published: March 2018

Solid state p-type dye sensitized solar cells are successfully fabricated based on a NiO–dye–TiO2 core–shell structure using an organic dye.
A supramolecular self-assembly strategy for upconversion nanoparticle bioconjugation
Authors: Sun Yulong , Zhang Wenjing , Wang Baoming , Xu Xiaoxue , Chou Joshua , Shimoni Olga , Ung Alison T. , Jin Dayong
Published: March 2018

An efficient surface modification and bioconjugation strategy for upconversion nanoparticles is reported via supramolecular host–guest self-assembly.
Organic titanates: a model for activating rapid room-temperature synthesis of shape-controlled CsPbBr3 nanocrystals and their derivatives
Authors: Fang Shaofan , Li Guangshe , Li Huixia , Lu Yantong , Li Liping
Published: March 2018

We reported a new synthesis method of CsPbBr3 NCs with the activation of organic titanates at room temperature. The morphology from nanoplates to nanocubes could be controlled by changing the kind of organic titanates.
Capturing the metastable state in the spontaneous and reversible single-crystal-to-single-crystal phase transition of riluzolium oxalate
Authors: Mondal Pradip Kumar , Rao Varun , Chopra Deepak
Published: March 2018

A spontaneous and reversible single-crystal-to-single-crystal (SCSC) polymorphic transition via a disordered state has been captured in riluzolium oxalate salt.
The adsorption of helium atoms on small cationic gold clusters
Authors: Goulart Marcelo , Gatchell Michael , Kranabetter Lorenz , Kuhn Martin , Martini Paul , Gitzl Norbert , Rainer Manuel , Postler Johannes , Scheier Paul , Ellis Andrew M.
Published: March 2018

Adducts between gold cluster ions and helium atoms reveal the underlying cluster ion structure.
Effective elimination of As(iii)viasimultaneous photocatalytic oxidation and adsorption by a bifunctional cake-like TiO2derived from MIL-125(Ti)
Authors: Liu Zhongmin , Wu Yongchuan , Chen Jitao , Li Yaru , Zhao Jingyu , Gao Kaihua , Na Ping
Published: March 2018

A bifunctional cake-like TiO2was successfully synthesizedviacalcination of MIL-125(Ti) at a suitable temperature by a one-step method and was applied for As(iii) removal by simultaneous photocatalytic oxidation and adsorption.
TiO2 modified with a Ru(ii)–N′NN′ 8-hydroxyquinolyl complex for efficient gaseous photoreduction of CO2
Authors: Xiang Wenjing , Li Lin , Dai Zengjin , Meng Xianggao , Li Renjie , Zhang Jing , Peng Tianyou
Published: March 2018

A rare example of a Ru(ii) pincer complex for the efficient photoreduction of CO2 to CO/CH4 in a gaseous system was developed.
Anti-anemia effects of ginsenoside Rk3 and ginsenoside Rh4 on mice with ribavirin-induced anemia
Authors: Wei Bo , Duan Zhiguang , Zhu Chenhui , Deng Jianjun , Fan Daidi
Published: March 2018

Ginsenoside Rk3 and ginsenoside Rh4 stimulate hematopoiesis and show excellent anti-anemia effectsviathe combined effects of different related cytokines.
Correction: Chiral ruthenium polypyridyl complexes as mitochondria-targeted apoptosis inducers
Authors: Chen Tianfeng , Mei Wen-Jie , Wong Yum-Shing , Liu Jie , Liu Yanan , Xie Huang-Song , Zheng Wen-Jie
Published: March 2018

Correction for ‘Chiral ruthenium polypyridyl complexes as mitochondria-targeted apoptosis inducers’ by Tianfeng Chen et al., Med. Chem. Commun., 2010, 1, 73–75.
A reversible light-responsive assembly system based on host–guest interaction for controlled release
Authors: Yu Jiemiao , Qu Hongnan , Dong Tingting , Rong Meng , Yang Liangrong , Liu Huizhou
Published: March 2018

A reversible light-responsive system based on the host–guest interaction between MSN–AZO and AuNP@CD was developed.
Highly selective room-temperature NO2 sensors based on a fluoroalkoxy-substituted phthalocyanine
Authors: Sun Qiqi , Feng Weigang , Yang Pu , You Guoqiang , Chen Yanli
Published: March 2018

A new n-type phthalocyanine-based sensor is developed for ultrasensitive and highly selective detection of trace amounts of NO2 against NH3 and H2S.
Aqueous protocol for allylic arylation of cinnamyl acetates with sodium tetraphenylborate using a Bedford-type palladacycle catalyst
Authors: Ghorpade Seema Arun , Sawant Dinesh Nanaji , Renn Dominik , Zernickel Anna , Du Weiyuan , Sekar Nagaiyan , Eppinger Jörg
Published: March 2018

Allylic arylation using 0.002 mol% of a Bedford-type palladacycle catalyst is described under mild reaction conditions.
The study of the influence of Mg(ii) and Ca(ii) ions on caffeic acid autoxidation in weakly alkaline aqueous solution using MCR-ALS analysis of spectrophotometric data
Authors: Živanović Slavoljub C. , Veselinović Aleksandar M. , Mitić Žarko J. , Nikolić Goran M.
Published: March 2018

UV-Vis spectrophotometry with MCR-ALS analysis was applied to study the influence of Mg(ii) and Ca(ii) ions on caffeic acid autoxidation.
Gold(i)-catalyzed diastereoselective synthesis of 1-α-oxybenzyl-1H-indenes
Authors: Virumbrales Cintia , Suárez-Pantiga Samuel , Solas Marta , Fernández-Rodríguez Manuel A. , Sanz Roberto
Published: March 2018

The gold(i)-catalyzed oxycyclization of β-aryl monosubstituted o-(alkynyl)styrenes gives rise to 1-α-methoxy or 1-α-hydroxybenzyl-1H-indenes in a diastereospecific way.
Advances in the synthesis of silyl-modified polymers (SMPs)
Authors: Guillaume Sophie M.
Published: March 2018

Silyl-modified polymers (SMPs) are being synthesized from chemical modification and olefin metathesis strategies.
Cobalt(iii)-catalysed C–H allylation with vinylaziridines
Authors: Kong Lingyu , Biletskyi Bohdan , Nuel Didier , Clavier Hervé
Published: March 2018

A cobalt-catalysed C–H allylation of aromatic and heteroaromatic compounds with vinylaziridines is described.
Sequential BN-doping induced tuning of electronic properties in zigzag-edged graphene nanoribbons: a computational approach
Authors: Sarmah Amrit , Hobza Pavel
Published: March 2018

Incorporation of an alternate impurity array in the ZGNR don't break the spin-degeneracy, providing the freedom to tune the electronic behaviors without affecting the spin-dependent properties.
Insights into the photocatalytic performance of Bi2O2CO3/BiVO4 heterostructures prepared by one-step hydrothermal method
Authors: Lopes Osmando F. , Carvalho Kele T. G. , Avansi Waldir , Milori Debora M. B. , Ribeiro Caue
Published: March 2018

A novel visible-driven heterojunction of Bi2O2CO3/BiVO4 was prepared by an efficient hydrothermal self-sacrificial synthesis method based on the difference in solubility.
Ternary composites of Ni–polyaniline–graphene as counter electrodes for dye-sensitized solar cells
Authors: Chen Xin , Liu Jing , Qian Kun , Wang Jihui
Published: March 2018

In this article, ternary composites (Ni–PANI–G composites) consisting of nickel nanoparticles, polyaniline (PANI), and graphene (G) were prepared for the first time and used as counter electrodes to replace the noble metal Pt in DSSCs.
A conductive sodium alginate and carboxymethyl chitosan hydrogel doped with polypyrrole for peripheral nerve regeneration
Authors: Bu Ying , Xu Hai-Xing , Li Xin , Xu Wen-Jin , Yin Yi-xia , Dai Hong-lian , Wang Xiao-bin , Huang Zhi-Jun , Xu Pei-Hu
Published: March 2018

Polymer materials with electrically conductive properties have good applications in their respective fields because of their special properties.
Improved performance of small molecule solar cell by using oblique deposition technique and zinc phthalocyanine cathode buffer layer
Authors: Zhao Tianjiao , Zhang Gengmin , Xing Yingjie
Published: March 2018

JscandVocof ZnPc:PTCBI bulk heterojunction solar cell are enhanced by using oblique deposition technique and ZnPc cathode buffer layer.
A single-electrode electrochemical system for multiplex electrochemiluminescence analysis based on a resistance induced potential difference
Authors: Gao Wenyue , Muzyka Kateryna , Ma Xiangui , Lou Baohua , Xu Guobao
Published: March 2018

A single-electrode electrochemical system uses only one electrode for multiplex experiments, and is a highly cheap platform for high throughput analysis.
Covalent triazine framework modified with coordinatively-unsaturated Co or Ni atoms for CO2 electrochemical reduction
Authors: Su Panpan , Iwase Kazuyuki , Harada Takashi , Kamiya Kazuhide , Nakanishi Shuji
Published: March 2018

Nickel-modified covalent triazine frameworks effectively reduced CO2 to CO because adsorbed COOH was stabilized on the coordinatively-unsaturated Ni atoms in CTF.
A new strategy for air-stable black phosphorus reinforced PVA nanocomposites
Authors: Ni Hong , Liu Xiaochen , Cheng Qunfeng
Published: March 2018

A new type of BP–PVA nanocomposites present a remarkable increased mechanical strength, toughness and modulus, which is stable sufficiently even staying in atmosphere for one year.
Carbon-based core–shell nanostructured materials for electrochemical energy storage
Authors: Feng Hao-peng , Tang Lin , Zeng Guang-ming , Tang Jing , Deng Yao-cheng , Yan Ming , Liu Ya-ni , Zhou Yao-yu , Ren Xiao-ya , Chen Song
Published: March 2018

Materials with a core–shell structure have received considerable attention owing to their interesting properties for their application in supercapacitors, Li-ion batteries, hydrogen storage and other electrochemical energy storage systems.
The structure of hydrogenase-2 from Escherichia coli: implications for H2-driven proton pumping
Authors: Beaton Stephen E. , Evans Rhiannon M. , Finney Alexander J. , Lamont Ciaran M. , Armstrong Fraser A. , Sargent Frank , Carr Stephen B.
Published: March 2018

Under anaerobic conditions, Escherichia coli is able to metabolize molecular hydrogen via the action of several [NiFe]-hydrogenase enzymes. Hydrogenase-2, which is typically present in cells at low levels during anaerobic respiration, is a periplasmic-facing membrane-bound complex that functions as a proton pump to convert energy from hydrogen (H2) oxidation into a proton gradient; consequently, its structure is of great interest. Empirically, the complex consists of a tightly bound core catalytic module, comprising large (HybC) and small (HybO) subunits, which is attached to an Fe–S protein (HybA) and an integral membrane protein (HybB). To date, efforts to gain a more detailed picture have been thwarted by low native expression levels of Hydrogenase-2 and the labile interaction between HybOC and HybA/HybB subunits. In the present paper, we describe a new overexpression system that has facilitated the determination of high-resolution crystal structures of HybOC and, hence, a prediction of the quaternary structure of the HybOCAB complex.
Speech-Language Pathologist Interventions for Communication in Moderate–Severe Dementia: A Systematic Review
Authors: Swan Katina , Hopper Marie , Wenke Rachel , Jackson Claire , Till Tracy , Conway Erin
Published: March 2018

Purpose

The purpose of this study is to evaluate the evidence for direct and indirect interventions for communication in people with moderate–severe dementia.

Method

A systematic search of the literature was conducted, as per the Preferred Reporting Items for Systematic Reviews and Meta-Analysed guidelines, across 8 electronic databases. Studies were included if they included direct or indirect interventions, which could be administered by a speech-language pathologist to people with moderate–severe dementia (defined as having Mini-Mental State Examination of ≤ 15; Folstein, Folstein, & McHugh, 1975). Studies also were required to include outcome measures, which reported on communication function or participation and/or well-being related to communication. Included studies were evaluated for methodological quality using the McMaster critical appraisal tool (Law et al., 1998).

Results

Eleven studies met the inclusion criteria. Ten of these studies related to direct interventions and included cognitive stimulation approaches using group (
n
= 5) or individual therapy (
n
= 1); cognitive training, including naming therapy (
n
= 1) and spaced retrieval training (
n
= 1); and cognitive rehabilitation approaches using augmentative and alternative communication (
n
= 2). One study reported an indirect intervention: conversation partner training. Due to the heterogeneity of studies, a meta-analysis was unable to be conducted. A descriptive synthesis of results indicated that interventions generally resulted in positive changes to communication and related quality-of-life outcomes compared with baseline or control groups.

Conclusions

Preliminary evidence was found to support communication interventions for people with moderate–severe dementia. The use of cognitive stimulation approaches, which use a group treatment model and conversation, as a therapy medium show promise as direct intervention options. Implications for clinical practice for speech-language pathologists and future research are discussed.

Supplemental Material

https://doi.org/10.23641/asha.5985241
Comparison of Percentage of Syllables Stuttered With Parent-Reported Severity Ratings as a Primary Outcome Measure in Clinical Trials of Early Stuttering Treatment
Authors: Onslow Mark , Jones Mark , O'Brian Sue , Packman Ann , Menzies Ross , Lowe Robyn , Arnott Simone , Bridgman Kate , de Sonneville Caroline , Franken Marie-Christine
Published: March 2018

Purpose

This report investigates whether parent-reported stuttering severity ratings (SRs) provide similar estimates of effect size as percentage of syllables stuttered (%SS) for randomized trials of early stuttering treatment with preschool children.

Method

Data sets from 3 randomized controlled trials of an early stuttering intervention were selected for analyses. Analyses included median changes and 95% confidence intervals per treatment group, Bland–Altman plots, analysis of covariance, and Spearman rho correlations.

Results

Both SRs and %SS showed large effect sizes from pretreatment to follow-up, although correlations between the 2 measures were moderate at best. Absolute agreement between the 2 measures improved as percentage reduction of stuttering frequency and severity increased, probably due to innate measurement limitations for participants with low baseline severity. Analysis of covariance for the 3 trials showed consistent results.

Conclusion

There is no statistical reason to favor %SS over parent-reported stuttering SRs as primary outcomes for clinical trials of early stuttering treatment. However, there are logistical reasons to favor parent-reported stuttering SRs. We conclude that parent-reported rating of the child's typical stuttering severity for the week or month prior to each assessment is a justifiable alternative to %SS as a primary outcome measure in clinical trials of early stuttering treatment.
The XXL Survey
Authors: Smolčić Vernesa , Intema Huib , Šlaus Bruno , Raychaudhury Somak , Novak Mladen , Horellou Cathy , Chiappetti Lucio , Delhaize Jacinta , Birkinshaw Mark , Bondi Marco , Bremer Malcolm , Ciliegi Paolo , Ferrari Chiara , Kolokythas Konstantinos , Lidman Chris , McGee Sean L. , Norris Ray , Pierre Marguerite , Röttgering Huub , Tasse Cyril , Williams Wendy
Published: March 2018

We present the 25 square-degree GMRT-XXL-N 610 MHz radio continuum survey, conducted at 50 cm wavelength with the Giant Metrewave Radio Telescope (GMRT) towards the XXL Northern field (XXL-N). We combined previously published observations of the XMM-Large Scale Structure (XMM-LSS) field, located in the central part of XXL-N, with newly conducted observations towards the remaining XXL-N area, and imaged the combined data-set using the Source Peeling and Atmospheric Modeling (SPAM) pipeline. The final mosaic encompasses a total area of 30.4 square degrees, with rms <150 μJy beam−1 over 60% of the area. The rms achieved in the inner 9.6 square degree area, enclosing the XMM-LSS field, is about 200 μJy beam−1, while that over the outer 12.66 square degree area (which excludes the noisy edges) is about 45 μJy beam−1. The resolution of the final mosaic is 6.5 arcsec. We present a catalogue of 5434 sources detected at ≥7 ×rms. We verify, and correct the reliability of, the catalog in terms of astrometry, flux, and false detection rate. Making use of the (to date) deepest radio continuum survey over a relatively large (2 square degree) field, complete at the flux levels probed by the GMRT-XXL-N survey, we also assess the survey’s incompleteness as a function of flux density. The radio continuum sensitivity reached over a large field with a wealth of multi-wavelength data available makes the GMRT-XXL-N 610 MHz survey an important asset for studying the physical properties, environments and cosmic evolution of radio sources, in particular radio-selected active galactic nuclei (AGN).
TheGaia-ESO Survey: a kinematical and dynamical study of four young open clusters
Authors: Bravi L. , Zari E. , Sacco G. G. , Randich S. , Jeffries R. D. , Jackson R. J. , Franciosini E. , Moraux E. , López-Santiago J. , Pancino E. , Spina L. , Wright N. J. , Jiménez-Esteban F. M. , Klutsch A. , Roccatagliata V. , Gilmore G. , Bragaglia A. , Flaccomio E. , Francois P. , Koposov S. E. , Bayo A. , Carraro G. , Costado M. T. , Damiani F. , Frasca A. , Hourihane A. , Jofré P. , Lardo C. , Lewis J. , Magrini L. , Morbidelli L. , Prisinzano L. , Sousa S. G. , Worley C. C. , Zaggia S.
Published: March 2018

Context.The origin and dynamical evolution of star clusters is an important topic in stellar astrophysics. Several models have been proposed in order to understand the formation of bound and unbound clusters and their evolution, and they can be tested by examining the kinematical and dynamical properties of clusters over a wide range of ages and masses.

Aims.We use theGaia-ESO Survey products to study four open clusters (IC 2602, IC 2391, IC 4665, and NGC 2547) that lie in the age range between 20 and 50 Myr.

Methods.We employ the gravity indexγand the equivalent width of the lithium line at 6708 Å together with effective temperatureTeffand the metallicity of the stars in order to discard observed contaminant stars. Then we derive the cluster radial velocity dispersionsσc, the total cluster massMtot, and the half mass radiusrhm. Using theGaia-DR1 TGAS catalogue, we independently derive the intrinsic velocity dispersion of the clusters from the astrometric parameters of cluster members.

Results.The intrinsic radial velocity dispersions derived by the spectroscopic data are higher than those derived from the TGAS data, possibly due to the different masses of the considered stars. UsingMtotandrhmwe derive the virial velocity dispersionσvirand we find that three out of four clusters are supervirial. This result is in agreement with the hypothesis that these clusters are dispersing, as predicted by the “residual gas expulsion” scenario. However, recent simulations show that the virial ratio of young star clustersmay be overestimated if it is determined using the global velocity dispersion, since the clusters are not fully relaxed.
Identifying Climate-smart agriculture research needs
Authors: Torquebiau Emmanuel , Rosenzweig Cynthia , Chatrchyan Allison M. , Andrieu Nadine , Khosla Raj
Published: March 2018

Climate-smart agriculture (CSA) is an approach to help agricultural systems worldwide, concurrently addressing three challenge areas: increased adaptation to climate change, mitigation of climate change, and ensuring global food security – through innovative policies, practices, and financing. It involves a set of objectives and multiple transformative transitions for which there are newly identified knowledge gaps. We address these questions raised by CSA within three areas: conceptualization, implementation, and implications for policy and decision-makers. We also draw up scenarios on the future of the CSA concept in relation to the 4 per 1000 Initiative (Soils for Food Security and Climate) launched at UNFCCC 21st Conference of the Parties (COP 21). Our analysis shows that there is still a need for further interdisciplinary research on the theoretical foundation of the CSA concept and on the necessary transformations of agriculture and land use systems. Contrasting views about implementation indicate that CSA focus on the “triple win” (adaptation, mitigation, food security) needs to be assessed in terms of science-based practices. CSA policy tools need to incorporate an integrated set of measures supported by reliable metrics. Environmental and social safeguards are necessary to make sure that CSA initiatives conform to the principles of sustainability, both at the agriculture and food system levels.
The mechanical properties of brick containing recycled concrete aggregate and polyethylene terephthalate waste as sand replacement
Authors: Khalid Faisal Sheikh , Azmi Nurul Bazilah , Mazenan Puteri Natasya , Shahidan Shahiron , Ali Noorwirdawati
Published: March 2018

This research focuses on the performance of composite sand cement brick containing recycle concrete aggregate and waste polyethylene terephthalate. This study aims to determine the mechanical properties such as compressive strength and water absorption of composite brick containing recycled concrete aggregate (RCA) and polyethylene terephthalate (PET) waste. The bricks specimens were prepared by using 100% natural sand, they were then replaced by RCA at 25%, 50% and 75% with proportions of PET consists of 0.5%, 1.0% and 1.5% by weight of natural sand. Based on the results of compressive strength, only RCA 25% with 0.5% PET achieve lower strength than normal bricks while others showed a high strength. However, all design mix reaches strength more than 7N/mm2 as expected. Besides that, the most favorable mix design that achieves high compressive strength is 75% of RCA with 0.5% PET.
Palm Oil Fuel Ash (POFA) and Eggshell Powder (ESP) as Partial Replacement for Cement in Concrete
Authors: Mohamad Mazizah Ezdiani , Mahmood Ali A. , Yik Yee Min Alicia , A.R. Nur Nadhira
Published: March 2018

This study is an attempt to partially replace Ordinary Portland cement (OPC) in concrete with palm oil fuel ash (POFA) and eggshell powder (ESP). The mix proportions of POFA and ESP were varied at 10% of cement replacement and compared with OPC concrete as control specimen. The fineness of POFA is characterized by passing through 300 μm sieve and ESP by passing through 75 μm sieve. Compressive strength testing was conducted on concrete specimens to determine the optimum mix proportion of POFA and ESP. Generally the compressive strength of OPC concrete is higher compared to POFA-ESP concrete. Based on the results of POFA-ESP concrete overall, it shows that the optimum mix proportion of concrete is 6%POFA:4% ESP achieved compressive strength of 38.60 N/mm2 at 28 days. The compressive strength of OPC concrete for the same period was 42.37 N/mm2. Higher water demand in concrete is needed due to low fineness of POFA that contributing to low compressive strength of POFA-ESP concrete. However, the compressive strength and workability of the POFA-ESP concrete were within the ranges typically encountered in regular concrete mixtures indicating the viability of this replacement procedure for structural and non-structural applications.
Effects of fines content on hydraulic conductivity and morphology of laterite soil as hydraulic barrier
Authors: Bello Yamusa Yamusa , Mohd Yunus Nor Zurairahetty , Ahmad Kamarudin , Abd Rahman Norhan , Sa’ari Radzuan
Published: March 2018

Laterite soil was investigated to find out the effects of fines content and to identify the micro-structural and molecular characteristics to evaluate its potentiality as a compacted soil landfill liner material. Tests were carried out on natural soil and reconstituted soil by dry weight of soil samples to determine the physical and engineering properties of the soil. All tests were carried out on the samples by adopting the British Standard 1377:1990. The possible mechanisms that contributed to the clay mineralogy were analyzed using spectroscopic and microscopic techniques such as field emission scanning electron microscopy (FESEM), energy-dispersive X-ray (EDX) and X-ray diffractometry (XRD). The laterite soil was found to contain kaolinite as the major clay minerals. A minimum of 50% fines content of laterite soil met the required result for hydraulic barriers in waste containment facilities.
A Review of Influence of Various Types of Structural Bracing to the Structural Performance of Buildings
Authors: Razak S.M. , Kong T.C. , Zainol N.Z. , Adnan A. , Azimi M.
Published: March 2018

Excessive lateral drift can contribute significantly towards crack formation, leading to structural damage. The structural damage will in turn reduce the capacity of the structure and weaken it from the intended design capacity. Generally, lateral drift is more pronounced in higher and longer structure, such as high rise buildings and bridges. A typical method employed to control lateral drift is structural bracing, which works by increasing stiffness and stability of structure. This paper reviews the influence of various types of structural bracing to structural performance of buildings. The history of structural bracing is visited and the differences between numerous structural bracing in term of suitability to different types of buildings and loading, mechanisms, technical details, advantages and limitations, and the overall effect on the structural behaviour and performance are dissected. Proper and efficient structural bracing is pertinent for each high rise building as this will lead towards safer, sustainable and more economical buildings, which are cheaper to maintain throughout the life of the buildings in the future.
Analysis of Factors Influencing Building Refurbishment Project Performance
Authors: Ishak Nurfadzillah , Ibrahim Fazdliel Aswad , Azizan Muhammad Azizi
Published: March 2018

Presently, the refurbishment approach becomes favourable as it creates opportunities to incorporate sustainable value with other building improvement. In this regard, this approach needs to be implemented due to the issues on overwhelming ratio of existing building to new construction, which also can contribute to the environmental problem. Refurbishment principles imply to minimize the environmental impact and upgrading the performance of an existing building to meet new requirements. In theoretically, building project’s performance has a direct bearing on related to its potential for project success. However, in refurbishment building projects, the criteria for measure are become wider because the projects are a complex and multi-dimensional which encompassing many factors which reflect to the nature of works. Therefore, this impetus could be achieve by examine the direct empirical relationship between critical success factors (CSFs) and complexity factors (CFs) during managing the project in relation to delivering success on project performance. The research findings will be expected as the basis of future research in establish appropriate framework that provides information on managing refurbishment building projects and enhancing the project management competency for a better-built environment.
Effects of the Fuel Price Increase on the Operating Cost of Freight Transport Vehicles
Authors: Gohari Adel , Matori Nasir , Wan Yusof Khamaruzaman , Toloue Iraj , Cho Myint Kin
Published: March 2018

One of the most important criteria in freight modal choices is the transport operating cost in which fuel price changes has a significant effect on it. This paper presents the impact of fuel price increases on the operating cost of the different transport modes for the containerized freight transportation. In this study, an operating cost equation was applied to compare the operating cost of different freight transport vehicles as well as evaluation of the operating cost changes across a range of fuel prices between the current price and one-hundred percent increase. The equation consists of influential parameters such as fuel cost, driver wage and maintenance cost of a vehicle. It has been concluded that the effect of the fuel price increase on the operating cost of different freight transportation modes is not in the same rate. According to equation and effective parameters considered, comparing the results showed that truck has the highest cost, train has the largest increase in price. Finally, the ship is the most influenced vehicle in terms of operating cost percentage increase when the rate of fuel price increase, followed by train and truck.
Structural Effects of Reinforced Concrete Beam Due to Corrosion
Authors: Mohd Noh Hamidun , Idris Nur’ain , Md Noor Nurazuwa , Sarpin Norliana , Zainal Rozlin , Kasim Narimah
Published: March 2018

Corrosion of steel in reinforced concrete is one of the main issues among construction stakeholders. The main consequences of steel corrosion include loss of cross section of steel area, generation of expansive pressure which caused cracking of concrete, spalling and delaminating of the concrete cover. Thus, it reduces the bond strength between the steel reinforcing bar and concrete, and deteriorating the strength of the structure. The objective of this study is to investigate the structural effects of corrosion damage on the performance of reinforced concrete beam. A series of corroded reinforced concrete beam with a corrosion rate of 0%, 20% and 40% of rebar corrosion is used in parametric study to assess the influence of different level of corrosion rate to the structural performance. As a result, the used of interface element in the finite element modelling predicted the worst case of corrosion analysis since cracks is induced and generate at this surface. On the other hand, a positive linear relationship was sketched between the increase of expansive pressure and the corrosion rate. Meanwhile, the gradient of the graph is decreased with the increase of steel bar diameter. Furthermore, the analysis shows that there is a significant effect on the load bearing capacity of the structure where the higher corrosion rate generates a higher stress concentration at the mid span of the beam. This study could predict the residual strength of reinforced concrete beam under the corrosion using the finite element analysis. The experimental validation is needed on the next stage to investigate the quantitative relation between the corrosion rate and its influence on the mechanical properties.
The Ultimate Pile Bearing Capacity from Conventional and Spectral Analysis of Surface Wave (SASW) Measurements
Authors: Bawadi Nor Faizah , Anuar Shamilah , A.Rahim Mustaqqim , Mansor A.Faizal
Published: March 2018

A conventional and seismic method for determining the ultimate pile bearing capacity was proposed and compared. The Spectral Analysis of Surface Wave (SASW) method is one of the non-destructive seismic techniques that do not require drilling and sampling of soils, was used in the determination of shear wave velocity (Vs) and damping (D) profile of soil. The soil strength was found to be directly proportional to the Vsand its value has been successfully applied to obtain shallow bearing capacity empirically. A method is proposed in this study to determine the pile bearing capacity using Vsand D measurements for the design of pile and also as an alternative method to verify the bearing capacity from the other conventional methods of evaluation. The objectives of this study are to determine Vsand D profile through frequency response data from SASW measurements and to compare pile bearing capacities obtained from the method carried out and conventional methods. All SASW test arrays were conducted near the borehole and location of conventional pile load tests. In obtaining skin and end bearing pile resistance, the Hardin and Drnevich equation has been used with reference strains obtained from the method proposed by Abbiss. Back analysis results of pile bearing capacities from SASW were found to be 18981 kN and 4947 kN compared to 18014 kN and 4633 kN of IPLT with differences of 5% and 6% for Damansara and Kuala Lumpur test sites, respectively. The results of this study indicate that the seismic method proposed in this study has the potential to be used in estimating the pile bearing capacity.
Evaluating the Rheological Properties of Waste Natural Rubber Latex Modified Binder
Authors: Abu Bakar Siti Khatijah , Abdulah Mohd Ezree , Mustafa Kamal Mazlina , Abd Rahman Raha , Hadithon Kamarul Arifin , Buhari Rosnawati , Ahmad Tajudin Saiful Azhar
Published: March 2018

Road surface is designed to be the durable surface material to sustain the traffic loading. However, due to physical and mechanical stress, pavement deterioration is accelerated. Thus, modifying conventional bitumen by improving its properties is seen as the best method to prolong pavement in-service life. The purpose of this paper is to study the effect of waste natural rubber (NR) latex on rheological properties of bitumen. Conventional bitumen PEN 80/100 was modified with different content of waste NR latex using a high shear mixer at temperature of 150°C. The modified binder properties were characterized by conducting physical test (i.e. softening point, penetration and penetration index) and rheological test (i.e. dynamic shear rheometer, DSR). Results showed that, the addition of waste NR latex improved the rheology properties, which indicates by improving of rutting factor (G*/sin δ). This properties improvement has also shows a potential to resist deformation on road surface despite of high traffic loading.
Preparation, Characterization and Adsorption Study of Granular Activated Carbon/Iron oxide composite for the Removal of Boron and Organics from Wastewater
Authors: Affam Augustine Chioma , Wong Chee Chung , Seyam Mohammed A. B. , Frederick Matt Chelsea Ann Anak , Sumbai Josephine Lantan Anak , Evuti Abdullahi Mohammed
Published: March 2018

Boron and organics maybe in high concentration during production of oil and gas, fertilizers, glass, and detergents. In addition, boron added to these industrial processes may require to be removed by the wastewater treatment plant. The preparation, characterization and application of iron oxide-activated carbon composite for removal of boron and COD was studied. The one variable at a time (OVAT) method was implemented to obtain desirable operating conditions (adsorbent dosage 5 g/L, reaction time 2 h, agitation speed 100 rpm, pH 5 for COD removal and pH 9 for boron removal). It was found that boron and organics present in a sample wastewater may require to be treated separately to remove the contaminants. The study achieved 97 and 70% for boron and COD removal, respectively. Adsorption as an alternative cheap source of treatment and its practicability for small communities is recommended as effective in removal of contaminants from river water.
Ozonation of return activated sludge for disintegration and solubilisation with synthesized titanium oxide as catalyst
Authors: Mohd Sarif S.F.Z. , Alias S.S. , Muhammad Ridwan F. , Ku Salim K.S. , Abidin C.Z.A. , Md. Ali U.F.
Published: March 2018

Ozonation of activated sludge in the present of titanium dioxide (TiO2) as catalyst to enhance the production of hydroxyl radical was evaluated in comparison to the sole ozonation process. In this process, the catalytic ozontion showed improvement in increasing ozone consumption and improving activated sludge disintegration and solubilisation. The reduction of total suspended solid (TSS), volatile suspended solid (VSS) and soluble chemical oxygen demand (SCOD) solubilisation was better in the catalytic ozonation system. Initial pH 7 of activated sludge was found best to disintegrate and solubilise the sludge flocs. However upon additional of sodium hydroxide (NaOH) in pH adjustment enhanced the solubilisation of organic matter from the flocs and cells, making the initial pH 9 is the best condition for activated sludge solubilisation. Yet the initial pH 7 of activated sludge supernatant was the best condition to achieve SCOD solubilisation due to sludge floc disintegration, when it had stronger correlation between TSS reduction and SCOD solubilisation (R2=0.961). Lower amount of catalyst of 100 mgTiO2/gTSS was found to disintegrate and solubilise the activated sludge better with 30.4% TSS reduction and 25.2% SCOD solubilisation efficiency, compared to 200 mgTiO2/gTSS with 21.9% and 17.1% TSS reduction and SCOD solubilisation, respectively.
Performance of a Retrofitted Multicyclone for PM2.5 Emission Control
Authors: Dewika M , Rashid M , Ammar M.R
Published: March 2018

This paper presents on the performance of a retrofitted multicyclone system, which aims to increase the collection efficiency of PM2.5 (i.e. particulate size fraction ≤ 2.5 μm) emission. The multicyclone was retrofitted by extracting 15% and 20% of the total volumetric air flow rate at the dust hopper of the unit using an additional Induced Draft Fan. The total collection efficiency with and without the extraction was measured at various air volumetric flow rates and particulate mass inlet concentration. The results showed that there was a reduction of 12% to 54% depending on the inlet concentration of PM2.5 emission in the stack with compared to without extraction increasing the collection efficiency of the retrofitted multicyclone. The finding suggests that a simple technique of applying gas extraction at the dust hopper of a multicyclone as reported in this study able to increase the overall performance in fine particulate collection.
Spatial and Temporal Variations of Water Quality and Trophic Status in Sembrong Reservoir, Johor
Authors: Hashim Syarifah Intan Najla Syed , Talib Siti Hidayah Abu , Abustan Muhammad Salleh
Published: March 2018

A study of spatial and temporal variations on water quality and trophic status was conducted to determine the temporal (average reading by month) and spatial variations of water quality in Sembrong reservoir and to evaluate the trophic status of the reservoir. Water samples were collected once a month from November 2016 to June 2017 in seventeen (17) sampling stations at Sembrong Reservoir. Results obtained on the concentration of dissolved oxygen (DO), water temperature, pH and secchi depth had no significant differences compared to Total Phosphorus (TP) and chlorophyll-a. The water level has significantly decreased the value of the water temperature, pH and TP. The water quality of Sembrong reservoir is classified in Class II which is suitable for recreational uses and required conventional treatment while TSI indicates that sembrong reservoir was in lower boundary of classical eutrophic (TSI > 50).