bluuebunny/crossref_metadata_2025 huggingface dataset:
TLR10 and NFKBIA contributed to the risk of hip osteoarthritis: systematic evaluation based on Han Chinese population
Authors: Tang Hongtao , Cheng Zhenzhen , Ma Wenlong , Liu Youwen , Tong Zhaofang , Sun Ruibo , Liu Hongliang
Published: July 2018

Multiple lines of evidence have confirmed the importance of genetic factors for hip osteoarthritis (HOA). Our study aimed to investigate the associations of TLR10 and NFKBIA with respect to the HOA risk in Han Chinese individuals. A total of 1,043 HOA patients and 2,664 controls were recruited. Then, 23 tag single-nucleotide polymorphisms (SNPs) in the TLR10 and NFKBIA genes were selected for genotyping. Genetic association analyses were conducted in both single-marker and haplotype-based ways. Gene by gene, two-way interactions were analysed using a case-only method. Multiple bioinformatics tools were utilised to examine the potential functional significance of the SNPs. Two significant SNPs, rs11096957 (OR = 1.26, P = 1.35 × 10−5) and rs2273650 (OR = 1.2, P = 1.57 × 10−3), were significantly associated with HOA risk. Rs11096957 was also associated with the severity of the HOA. Bioinformatics analysis indicated that the allele T of rs2273650 would create new miRNA/SNP target duplexes, which suggests that rs2273650 could alter the NFKBIA expression by affecting the miRNA/SNP target duplexes. Our study identified significant association signals from NFKBIA with HOA for the first time, and it also confirmed the contribution of TLR10 to the HOA risk. These findings would provide clues for identifying individuals at high risk of HOA.
Change in the magnetic configurations of tubular nanostructures by tuning dipolar interactions
Authors: Salinas H. D. , Restrepo J. , Iglesias Òscar
Published: July 2018

We have investigated the equilibrium states of ferromagnetic single wall nanotubes by means of atomistic Monte Carlo simulations of a zig-zag lattice of Heisenberg spins on the surface of a cylinder. The main focus of our study is to determine how the competition between short-range exchange (J) and long-range dipolar (D) interactions influences the low temperature magnetic order of the nanotubes as well as the thermal-driven transitions involved. Apart from the uniform and vortex states occurring for dominant J or D, we find that helical states become stable for a range of intermediate values of γ = D/J that depends on the radius and length of the nanotube. Introducing a vorticity order parameter to better characterize helical and vortex states, we find the pseudo-critical temperatures for the transitions between these states and we establish the magnetic phase diagrams of their stability regions as a function of the nanotube aspect ratio. Comparison of the energy of the states obtained by simulation with those of simpler theoretical structures that interpolate continuously between them, reveals a high degree of metastability of the helical structures that might be relevant for their reversal modes.
Understanding the indirect DNA read-out specificity of I-CreI Meganuclease
Authors: Prieto Jesús , Redondo Pilar , López-Méndez Blanca , D’Abramo Marco , Merino Nekane , Blanco Francisco J. , Duchateau Phillipe , Montoya Guillermo , Molina Rafael
Published: July 2018

The high DNA specificity of homing endonucleases makes them a powerful protein scaffold to engineer enzymes for genome manipulation. Understanding their molecular recognition of DNA is an important prerequisite to generate engineered enzymes able to cleave DNA in specific desired genome sites. Protein-DNA recognition studies have been mostly focused on specific direct contacts between amino acid side chains and bases to redesign the binding interface. However, the important role of indirect readout in the central region of the target DNA of the homing endonuclease I-CreI suggested that indirect readout may play a key role in the redesign of protein-DNA interactions. The sequences of the I-CreI central substrate region, 2NN, along with the adjacent 5NNN, are key for substrate cleavage. Here, we analyse the mechanism of target discrimination at the 5NNN region by the I-CreI protein, revealing its critical role in the location and occupancy of the catalytic metal ions, which is crucial for cleavage. Our data highlight the importance of indirect readout for target DNA cleavage, thus aiding I-CreI engineering when targeting new DNA sequences.
Seasonal changes in the diversity and composition of the litter fauna in native forests and rubber plantations
Authors: Beng Kingsly C. , Corlett Richard T. , Tomlinson Kyle W.
Published: July 2018

The litter layer of tropical forests supports a significant fraction of total arthropod diversity and decomposition of this layer is the main pathway by which nutrients are returned to the soil and CO2to the atmosphere. Conversion of tropical forests to agriculture is the main threat to biodiversity and ecosystem services, and understanding effects on the litter layer is important for understanding and mitigating these impacts. We used high through-put DNA sequencing of the mitochondrial cytochrome c oxidase subunit I (COI) gene to assess seasonal changes in the diversity and composition of the litter fauna at five matched pairs of native forests and rubber plantations in tropical SW China every month for a year, and measured the environmental factors expected to drive intra-annual variation. Forests and rubber had very different arthropod assemblages throughout the year, with forests more species-rich than rubber in all months except February. Very high rates of intra-annual turnover in species composition in both forests and rubber were associated with seasonality in environmental variables, with the influence of particular variables differing among taxa. Tropical arthropods are very sensitive to seasonality and sampling at only one time of the year captures only a subset of the total community.
Spatial-temporal characteristics and the epidemiology of haemorrhagic fever with renal syndrome from 2007 to 2016 in Zhejiang Province, China
Authors: Wu Haocheng , Wang XinYi , Xue Ming , Wu Chen , Lu Qinbao , Ding Zheyuan , Zhai Yujia , Lin Junfen
Published: July 2018

Zhejiang Province is one of the six provinces in China that has the highest incidence of haemorrhagic fever with renal syndrome (HFRS). Data on HFRS cases in Zhejiang Province from January 2007 to July 2017 were obtained from the China Information Network System of Disease Prevention and Control. Joinpoint regression analysis was used to observe the trend of the incidence rate of HFRS. The monthly incidence rate was predicted by autoregressive integrated moving average(ARIMA) models. Spatial autocorrelation analysis was performed to detect geographic clusters. A multivariate time series model was employed to analyze heterogeneous transmission of HFRS. There were a total of 4,836 HFRS cases, with 15 fatal cases reported in Zhejiang Province, China in the last decade. Results show that the mean absolute percentage error (MAPE) of the modelling performance and the forecasting performance of the ARIMA model were 27.53% and 16.29%, respectively. Male farmers and middle-aged patients account for the majority of the patient population. There were 54 high-high clusters and 1 high-low cluster identified at the county level. The random effect variance of the autoregressive component is 0.33; the spatio-temporal component is 1.30; and the endemic component is 2.45. According to the results, there was obvious spatial heterogeneity in the endemic component and spatio-temporal component but little spatial heterogeneity in the autoregressive component. A significant decreasing trend in the incidence rate was identified, and obvious clusters were discovered. Spatial heterogeneity in the factors driving HFRS transmission was discovered, which suggested that a targeted preventive effort should be considered in different districts based on their own main factors that contribute to the epidemics.
Intramuscular infiltration of a local anesthetic, lidocaine, does not result in adverse behavioural side effects in rainbow trout
Authors: Chatigny F. , Creighton C. M. , Stevens E. D.
Published: July 2018

Fish are a useful animal model for research, but our improvement in some aspects of their welfare has not kept pace with their increased popularity for this use. For example, researchers rarely use analgesics. We evaluated the side effects of lidocaine, a local anesthetic widely used in human and veterinary medicine. We infiltrated lidocaine on each side of the dorsal fin (total 20 mg/kg) of young rainbow trout (15 fish per group) compared with infiltration with an equal volume of saline. We monitored behaviour of individual trout during the 4-hour trial. Food was presented 5 times during the trial (30 min, 1 h, 2 h, 3 h, 4 h after infiltration) and we analyzed behaviour for 1 minute before and after food presentation. Behaviour of Saline-Infiltrated trout compared with trout that received no infiltration showed that infiltration in and of itself had no statistically significant effects on trout behaviour. However, there were many statistically significant effects of Lidocaine-Infiltrated trout compared with Saline-Infiltrated trout; none of the side-effects were adverse.
One-time root-zone N fertilization increases maize yield, NUE and reduces soil N losses in lime concretion black soil
Authors: Jiang Chaoqiang , Lu Dianjun , Zu Chaolong , Shen Jia , Wang Shiji , Guo Zhibin , Zhou Jianmin , Wang Huoyan
Published: July 2018

Excess N-fertilizer application and inappropriate fertilization methods have led to low N use efficiency (NUE) and high N leaching. A field experiment was performed in a typical lime concretion black soil area to compare N application methods: split surface broadcasting (SSB) and one-time root-zone fertilization (RZF) on grain yield, NUE, the fate of 15N urea and soil N loss during the 2015 and 2016 maize growing seasons. Each application method was tested at N rates of 135 and 180 kg N ha−1, and a control (CK) with no N fertilizer. The RZF treatment remarkably increased grain yield by 7.0% compared with SSB treatment under 180 kg N ha−1, and significantly increased N derived from fertilizer by 28.5%. The residual 15N in the 0–80 cm soil layer was 40.6–47.6% after harvest, 61.8–70.9% of which was retained in 0–20 cm. The RZF remarkably increased the 15N recovery in maize by 28.7%, while significantly decreased the potential N losses by 30.2% compared with SSB in both seasons. In conclusion, one-time RZF of urea is recommended for obtaining high yields, increasing NUE, and minimizing N losses in maize, which deserves more attention for developing and applying in the future.
Ammonium [11C]thiocyanate: revised preparation and reactivity studies of a versatile nucleophile for carbon-11 radiolabelling
Authors: Haywood Tom , Cesarec Sara , Kealey Steven , Plisson Christophe , Miller Philip W.
Published: July 2018

Ammonium [11C]thiocyanate, produced from [11C]CS2, was used to efficiently radiolabel a range of C-11 thiocyanate and thiazolone molecules.
Efficient spatial charge separation and transfer in ultrathin g-C3N4 nanosheets modified with Cu2MoS4 as a noble metal-free co-catalyst for superior visible light-driven photocatalytic water splitting
Authors: Zou Yajun , Shi Jian-Wen , Ma Dandan , Fan Zhaoyang , He Chi , Cheng Linhao , Sun Diankun , Li Jun , Wang Zeyan , Niu Chunming
Published: July 2018

Cu2MoS4 was employed as a promising non-noble metal co-catalyst to couple with g-C3N4 for highly efficient water splitting.
Synergetic catalysis of bimetallic copper–cobalt nanosheets for direct synthesis of ethanol and higher alcohols from syngas
Authors: Sun Kai , Gao Xiaofeng , Bai Yunxing , Tan Minghui , Yang Guohui , Tan Yisheng
Published: July 2018

The reaction scheme of CO hydrogenation to ethanol under the synergetic catalysis of uniformly dispersed bimetallic copper–cobalt nanosheets.
Microaeration through a biomembrane for biogas desulfurization: lab-scale and pilot-scale experiences
Authors: Pokorna-Krayzelova Lucie , Bartacek Jan , Theuri Shelmith Nyawira , Segura Gonzalez Camilo Andres , Prochazka Jindrich , Volcke Eveline I. P. , Jenicek Pavel
Published: July 2018

Microaeration through biomembrane; a novel method for biogas desulfurization.
Influence of thermal processing on the phase behavior of a novel acylglyceride-alkylglyceride lipid-based delivery system
Authors: Arranz-Martínez Pablo , Corzo-Martínez Marta , Vázquez Luis , Torres Carlos F. , Marangoni Alejandro G.
Published: July 2018

Small angle X-ray spectra of the glycerolysis product of ratfish liver oil melted at 50 °C and immediately stored at 4 °C.
Molecular insights into the interaction of Hsp90 with allosteric inhibitors targeting the C-terminal domain
Authors: Kumar MV Vasantha , Ebna Noor Radwan , Davis Rachel E. , Zhang Zheng , Sipavicius Edvinas , Keramisanou Dimitra , Blagg Brian S. J. , Gelis Ioannis
Published: July 2018

Novologues KU-32 and KU-596 bind at the C-terminal domain of Hsp90 and exploit a long-range allosteric network to modulate the chaperone cycle.
Microneedles integrated with a triboelectric nanogenerator: an electrically active drug delivery system
Authors: Bok Moonjeong , Lee Yunwoo , Park Daehoon , Shin Sangho , Zhao Zhi-Jun , Hwang Boyeon , Hwang Soon Hyoung , Jeon So Hee , Jung Joo-Yun , Park Sung Ha , Nah Junghyo , Lim Eunju , Jeong Jun-Ho
Published: July 2018

A combined system of microneedles and a triboelectric nanogenerator (TENG) was designed and utilized as a portable electrically active drug delivery device.
Tunable terahertz photoconductivity of hydrogen functionalized graphene using optical pump-terahertz probe spectroscopy
Authors: Kar Srabani , Mohapatra Dipti R. , Sood A. K.
Published: July 2018

We show that the terahertz photoconductivity of monolayer graphene following 800 nm femtosecond optical pump excitation can be tuned by different levels of hydrogenation (graphane) and provide a quantitative understanding of the unique spectral dependence of photoconductivity.
An efficient synthetic route to accelerate zeolite synthesis via radicals
Authors: Cheng Peng , Feng Guodong , Sun Chang , Xu Wenjing , Su Ji-Hu , Yan Wenfu , Yu Jihong
Published: July 2018

A highly efficient radical-route is developed to accelerate the synthesis of zeolites via sodium persulfate by generating hydroxyl radicals.
Green carbon disulfide surrogateviaa combination of potassium sulfide and chloroform for benzothiazine-thione and benzothiazole-thione construction
Authors: Tan Wei , Wang Cuihong , Jiang Xuefeng
Published: July 2018

An efficient and green carbon disulfide surrogateviafacile combination of potassium sulfide and chloroform has been developed.
20(S)-Ginsenoside Rg2 attenuates myocardial ischemia/reperfusion injury by reducing oxidative stress and inflammation: role of SIRT1
Authors: Fu Wenwen , Xu Huali , Yu Xiaofeng , Lyu Chen , Tian Yuan , Guo Minyu , Sun Jiao , Sui Dayun
Published: July 2018

20(S)-Ginsenoside Rg2 confers a protective effect against MI/R injury via SIRT1 signaling, by alleviating oxidative stress and reducing myocardium inflammation.
Surface modification of CoCr alloys by electrochemical reduction of diazonium salts
Authors: Mezour M. A. , Oweis Y. , El-Hadad A. A. , Algizani S. , Tamimi F. , Cerruti M.
Published: July 2018

Tailoring the surface chemistry of CoCr alloys is of tremendous interest in many biomedical applications.
Integrated conversion of 1-butanol to 1,3-butadiene
Authors: Kruger Jacob S. , Dong Tao , Beckham Gregg T. , Biddy Mary J.
Published: July 2018

1-Butanol is dehydrated to linear butenes in high yield, and the butenes are converted to 1,3-butadiene in high selectivity in a one-tube process.
Insight into the dispersion behavior of 1-butyl-3-methylimiazolium chloride confined in nanoscale pores of carbon materials
Authors: Di Shuxia , Xu Yiqi , Zhang Qunfeng , Xu Xiaolong , Zhai Yuanyuan , Wang Bolin , He Haihua , Wang Qingtao , Xu Hao , Jiang Yishu , Zhao Jia , Li Xiaonian
Published: July 2018

It is important to understand the behaviour of ionic liquids (ILs) in nanoscale pores, as application of supported ionic liquid phase (SILP) materials has attracted much attention.
Discovery of acylphloroglucinol-based meroterpenoid enantiomers as KSHV inhibitors from Hypericum japonicum
Authors: Hu Linzhen , Liu Yanfei , Wang Yanxing , Wang Zhenzhen , Huang Jinfeng , Xue Yongbo , Liu Junjun , Liu Zhenming , Chen Yong , Zhang Yonghui
Published: July 2018

New enantiomers (1a/1b–4a/4b) were discovered from Hypericum japonicum. 1a/1b possessed a novel ring system cyclopenta[b]chromene. 1a and 4a exhibited promising anti-KSHV activities. QSAR studies for enantiomers on anti-KSHV activity were conducted.
Diastereoselective synthesis of dispirooxindoles via [3+2] cycloaddition of azomethine ylides to 3-phenacylideneoxindoles and evaluation of their cytotoxicity
Authors: Huang Ying , Huang Yi-Xin , Sun Jing , Yan Chao-Guo
Published: July 2018

The three-component reaction of 1,2,3,4-tetrahydroisoquinoline, isatins and 3-phenacylideneoxindoles in refluxing ethanol afforded dispiro[indoline-3,1′-pyrrolo[2,1-a]isoquinoline-3′,3′-indolines] (4a–4x) in good yields via 1,3-dipolar cycloaddition.
Eu3+/2+ co-doping system induced by adjusting Al/Y ratio in Eu doped CaYAlO4: preparation, bond energy, site preference and 5D0–7F4 transition intensity
Authors: Pan Yu , Wang Wenjun , Zhu Yuhan , Xu Haibing , Zhou Liqun , Noh Hyeon Mi , Jeong Jung Hyun , Liu Xiaoguang , Li Ling
Published: July 2018

CaY1−xAl1+xO4:2%Eu (x = 0, 0.1, 0.2) phosphors have been synthesized via a solid-state reaction process.
Enhanced legume root growth with pre-soaking in α-Fe2O3 nanoparticle fertilizer
Authors: Palchoudhury Soubantika , Jungjohann Katherine L. , Weerasena Lakmali , Arabshahi Abdollah , Gharge Uday , Albattah Abdulaziz , Miller Justin , Patel Ketan , Holler Robert A.
Published: July 2018

A new approach to increase root growth in legumes by pre-soaking seeds in iron oxide nanoparticle growth solution.
A scientometric study of the research on ion exchange membranes
Authors: Jiang Shanxue , Hagesteijn Kimberly F. L. , Ni Jin , Ladewig Bradley P.
Published: July 2018

This paper provides a comprehensive statistical study on the topic of ion exchange membranes and may provide an avenue for future research work in this field.
Nitric oxide activation facilitated by cooperative multimetallic electron transfer within an iron-functionalized polyoxovanadate–alkoxide cluster
Authors: Li F. , Meyer R. L. , Carpenter S. H. , VanGelder L. E. , Nichols A. W. , Machan C. W. , Neidig M. L. , Matson E. M.
Published: July 2018

Cooperative multimetallic electron transfer to accommodate substrate binding.
Carbene derived diradicaloids – building blocks for singlet fission?
Authors: Messelberger Julian , Grünwald Annette , Pinter Piermaria , Hansmann Max M. , Munz Dominik
Published: July 2018

Carbene–bridge–carbene ensembles: tunable diradicaloids for singlet fission?
Diastereo- and enantioselective copper catalyzed hydroallylation of disubstituted cyclopropenes
Authors: Sommer Heiko , Marek Ilan
Published: July 2018

A highly diastereo- and enantioselective protocol for the hydroallylation of 1,1- and 1,2-disubstituted cyclopropenes has been developed utilizing an in situ formed copper hydride.
N-Heterocyclic carbenes as chiral Brønsted base catalysts: a highly diastereo- and enantioselective 1,6-addition reaction
Authors: Santra Surojit , Porey Arka , Jana Barun , Guin Joyram
Published: July 2018

Highly diastereo- and enantioselective 1,6-addition of β-keto amides to p-quinone methides catalyzed by N-heterocyclic carbenes via ion-pair interaction is developed.
A redox-activated theranostic nanoagent: toward multi-mode imaging guided chemo-photothermal therapy
Authors: Zhang Ting-Ting , Xu Cong-Hui , Zhao Wei , Gu Yu , Li Xiang-Ling , Xu Jing-Juan , Chen Hong-Yuan
Published: July 2018

We construct a tumor redox microenvironment responsive core–shell therapeutic nanoagent for multi-mode imaging guided synergistic therapy in vitro and in vivo.
Ultrathin film heterojunctions by combining solution processing and sublimation for ambipolar organic field-effect transistors
Authors: Janasz Lukasz , Marszalek Tomasz , Zajaczkowski Wojciech , Borkowski Michal , Goldeman Waldemar , Kiersnowski Adam , Chlebosz Dorota , Rogowski Jacek , Blom Paul , Ulanski Jacek , Pisula Wojciech
Published: July 2018

Evaporation of small molecular n-type naphthalene on spin-cast p-type poly(3-hexylthiophene) fibers for bulk-like heterojunction ambipolar field-effect transistors with balanced electron and hole transport.
Evidence for substrate-assisted catalysis in N-acetylphosphoglucosamine mutase
Authors: Raimi Olawale G. , Hurtado-Guerrero Ramon , van Aalten Daan M.F.
Published: July 2018

N-acetylphosphoglucosamine mutase (AGM1) is a key component of the hexosamine biosynthetic pathway that produces UDP-GlcNAc, an essential precursor for a wide range of glycans in eukaryotes. AGM belongs to the α-d-phosphohexomutase metalloenzyme superfamily and catalyzes the interconversion of N-acetylglucosamine-6-phosphate (GlcNAc-6P) to N-acetylglucosamine-1-phosphate (GlcNAc-1P) through N-acetylglucosamine-1,6-bisphosphate (GlcNAc-1,6-bisP) as the catalytic intermediate. Although there is an understanding of the phosphoserine-dependent catalytic mechanism at enzymatic and structural level, the identity of the requisite catalytic base in AGM1/phosphoglucomutases is as yet unknown. Here, we present crystal structures of a Michaelis complex of AGM1 with GlcNAc-6P and Mg2+, and a complex of the inactive Ser69Ala mutant together with glucose-1,6-bisphosphate (Glc-1,6-bisP) that represents key snapshots along the reaction co-ordinate. Together with mutagenesis, these structures reveal that the phosphate group of the hexose-1,6-bisP intermediate may act as the catalytic base.
Force-activated catalytic pathway accelerates bacterial adhesion against flow
Authors: Hazra Jagadish P. , Arora Nisha , Sagar Amin , Srinivasan Shwetha , Chaudhuri Abhishek , Rakshit Sabyasachi
Published: July 2018

Mechanical cues often influence the factors affecting the transition states of catalytic reactions and alter the activation pathway. However, tracking the real-time dynamics of such activation pathways is limited. Using single-molecule trapping of reaction intermediates, we developed a method that enabled us to perform one reaction at one site and simultaneously study the real-time dynamics of the catalytic pathway. Using this, we showed single-molecule calligraphy at nanometer resolution and deciphered the mechanism of the sortase A enzymatic reaction that, counter-intuitively, accelerates bacterial adhesion under shear tension. Our method captured a force-induced dissociation of the enzyme–substrate bond that accelerates the forward reaction 100×, proposing a new mechano-activated catalytic pathway. In corroboration, our molecular dynamics simulations in the presence of force identified a force-induced conformational switch in the enzyme that accelerates proton transfer between CYS184 (acceptor) and HIS120 (donor) catalytic dyads by reducing the inter-residue distances. Overall, the present study opens up the possibility of studying the influence of factors affecting transition states in real time and paves the way for the rational design of enzymes with enhanced efficiency.
TUG1 promotes prostate cancer progression by acting as a ceRNA of miR-26a
Authors: Yang Bin , Tang Xiaodi , Wang Zhixin , Sun Daju , Wei Xin , Ding Youpeng
Published: July 2018

Previous studies have demonstrated that taurine-upregulated gene 1 (TUG1) was aberrantly expressed and involved in multiple types of cancer; however, the expression profile and potential role of TUG1 in prostate cancer (PCa) remains unclear. The aim of the present study was to evaluate the expression and function of TUG1 in PCa. In the present study, we analyzed TUG1 expression levels of PCa patients in tumor and adjacent normal tissue by real-time quantitative PCR. Knockdown of TUG1 by RNAi was performed to explore its roles in cell proliferation, migration, and invasion. Here we report, for the first time, that TUG1 promotes tumor cell migration, invasion, and proliferation in PCa by working in key aspects of biological behaviors. TUG1 could negatively regulate the expression of miR-26a in PCa cells. The bioinformatics prediction revealed putative miR-26a-binding sites within TUG1 transcripts. In conclusion, our study suggests that long non-coding RNA (lncRNA) TUG1 acts as a functional oncogene in PCa development.
Validity of predictive equations for resting metabolic rate in healthy humans
Authors: Galgani Jose E. , Castro-Sepulveda Mauricio , Pérez-Luco Cristian , Fernández-Verdejo Rodrigo
Published: July 2018

Background: There are several predictive equations for estimating resting metabolic rate (RMR) in healthy humans. Concordance of these equations against measured RMR is variable, and often dependent on the extent of RMR. Part of the discrepancy may be due to an insufficient accuracy of metabolic carts, but this accuracy can be improved via a correction procedure. Objective: To determine the validity of predictive RMR equations by comparing them against measured and corrected (i.e. the reference) RMR. Methods: RMR was measured, in 69 healthy volunteers (29 males/40 females; 32±8 years old; BMI 25.5±3.8 kg/m2) and then corrected by simulating gas exchange through pure gases and high-precision mass-flow regulators. RMR was predicted using 13 published equations. Bland–Altman analyses compared predicted vs. reference RMRs. Results: All equations correlated well with the reference RMR (r>0.67; P<0.0001), but on average, over-predicted the reference RMR (89–312 kcal/d; P<0.05). Based on Bland–Altman analyses, 12 equations showed a constant bias across RMR, but the bias was not different from zero for nine of them. Three equations stood out because the absolute difference between predicted and reference RMR was equal or lower than 200 kcal/d for >60% of individuals (the Mifflin, Oxford and Müller equations). From them, only the Oxford equations performed better in both males and females separately. Conclusion: The Oxford equations are a valid alternative to predict RMR in healthy adult humans. Gas-exchange correction appears to be a good practice for the reliable assessment of RMR.
The corrosion behavior of T/P91 steel under the atmosphere environment in Hunan province
Authors: Chao Feng , Yi Xie , Jun Wang , Yi Long , Wei Chen , Dahai Xia
Published: July 2018

The research of corrosion behavior of T/P91 steel was investigated taking the case for the T/P91 steel corrosions existed during the construction process of a thermal power plant in Hunan province.The morphology change, product component and mechanical properties change were studied during the corrosion process of SO4-2. The results indicated that the surface oxide layer are mainly composed of iron and chromium oxide.As the thickness of oxide layer increased, the ability of blocking the erosive ions diffusion also come into effect, thus slow down the corrosion rate.
Influence of culture conditions on extracellular polymeric substances production by the white rot fungi Phanerochaete chrysosporium
Authors: Li Ningjie , Fu Linbo , Wu Lei , Chen Zhongwei , Lan Qi
Published: July 2018

The extracellular polymeric substances of white rot fungi play an important role in the adsorption of heavy metals, but the influence of culture conditions on extracellular polymeric substances production is still unknown. In this paper, we researched on the influence of temperature, incubation time, the rotational speed and the inoculation volume on the yield of extracellular polymeric substances produced by Phanerochaete chrysosporium, a model strain of white rot fungi. The results show that the optimum culture conditions for Phanerochaete chrysosporium to produce extracellular polymeric substances was culturing at 40 °C, incubating for 5 d, rotating at 100 rpm, and inoculating 0.5 ml of spore suspension with concentration of 2.5×106 spores/ml. The highest yield of EPS was 234.65 mg/g when the fungi was cultured at 100 rpm, 40 °C and incubated for 5 days. This study can provide useful information for the follow-up experiments related to extracellular polymeric substances of white rot fungi
Study on Inorganic Modification of Damping Capacity of Polyurethane Materials for Building
Authors: Feng Zhou , Jianjun Gan , Xin Du , Ligang Cui
Published: July 2018

As a kind of passive control device, viscoelastic damper has been successfully applied to allkinds of engineering structures. However, the viscoelastic material in viscoelastic dampers is mainly basedon rubber. Therefore, in this thesis, the viscoelastic material is the main line of study. Different viscoelasticmaterial formulas are being used to make the corresponding damper and study the correlation performanceof such damper in the low frequency region. In this thesis, we mainly study the polyurethane elastomermaterial, but simplex polyurethane elastomer materials have low damping and cannot achieve the effect ofbuilding damping, so it's necessary to study the modification. In this experiment, four kinds of inorganicfillers, mica powder, zinc oxide, silica and glass fiber were used to modify the polyurethane elastomer. Itsdamping performance then is tested by a dynamic load testing machine in a low frequency region of 0.1Hz-1.0Hz.
Discrimination of As Sources in Greenhouse Soils in Northeast China Based on Multivariate Statistics
Authors: Yu Peiying , Qian Xubin , Cui Shuang , Guo Wenmiao , Wang Jun
Published: July 2018

The aims of this research were to determine the accumulation status of total As and discriminate the sources of As by the methods of multivariate statistics. Our results showed that total arsenic contents in top soils increased with cultivation duration, and had a significant positive correlation with cultivation years (R2=0.5192, P=0.009). Based on multivariate statistics, soil organic matters (SOM) and As in greenhouse soils may originate from the same source. It could be concluded that agrichemicals, especially chicken manures may cause As enrichment in greenhouse top soils.
Numerical Simulation of Thermal Theory of Sintered Coal Gangue Self-Insulation Block and Wall
Authors: Hongxia Zhai , Kang Pang , Baoquan Cheng , Xuanyi Li
Published: July 2018

As a new building material, sintered coal gangue self-insulation block can not only make efficient use of industrial waste but also have a stronger heat preservation effect. In this paper, we use sintered coal gangue self-insulation block with staggered rectangle holes and wall as objects which can be seen commonly in the Anhui market. Through studying block type, wall thickness and masonry mortar type's effects on the heat preservation of the wall based on ANSYS numerical modeling, it proves that with special masonry mortar, sintered coal gangue self-insulation block can reach the best energy-saving effect, which meets the need of green building and sustainable building .
Crystal structure and microwave dielectric properties of Ca[(1/3Nb2/3)0.92Zr0.08]O3−δ-xTiO2ceramics
Authors: Guo Wen , Xiong Gang
Published: July 2018

The effects of B2O3on the sinterability and microwave dielectric properties of Ca[(Li1/3Nb2/3)0.92Zr0.08]O3−δ ceramics were investigated. B2O3doping can effectively reduce sintering temperatue by 150~200°C. The temperature coefficient of resonator frequency τf increased with an increase of B3O3content and sintering temperatue. When B2O3of 2wt% were added, the optimum microwave dielectric properties: εr=28.5,Qf =13560GHz and τf= − 7.6×10–6/°C were obtained at the sintering temperature of 950°C.
The research and development of longitudinal profiled (LP) plate
Authors: Shiping Lu , qun Li , Zhiyong Wang , Linhao Gu , Xuanming Zhang
Published: July 2018

In this paper, the advantages of the longitudinal profiled(LP) steel plate is described, and the characteristics of LP plate rolling process is introduced. In contrast to the ordinary steel plate, The change rule of the bite angle and other parameters is put forward from the rolling principle. On this basis, the rolling plan is formulated. The finished condition of the steel plate is TMCP, and the size of the steel plate is corresponding to the setting value. Test result shows that the performance meets the standard of Q345. This indicates that LP plate has successfully developed in the Shougang thick plate plant.
Improved electrochemical performance of 5 V spinel LiNi0.5Mn1.5O4 by La2O3 surface coating for Li-ion batteries
Authors: Wei Aijia , Li Wen , Zhang Lihui , Liu Zhenfa
Published: July 2018

LiNi0.5Mn1.5O4 coated with 1.5 wt.% La2O3 was prepared and investigated as cathode materials for lithium ion batteries. The samples was characterized by XRD, SEM and EDX. After the 1.5 wt.% La2O3 coating, the lattice structure of LiNi0.5Mn1.5O4 is not destroyed and a La2O3 coating layer has formed on the surface of LiNi0.5Mn1.5O4 particles. The 1.5 wt.% La2O3-coated LiNi0.5Mn1.5O4 exhibits a higher rate capacity, with discharge capacity between 3.5 and 5 V of 131.9, 127.1, 126.5, 120.7, 114.1 and 101.5 mAh g-1 at rates of 0.2, 0.5, 1, 2, 3 and 5 C (1 C = 140 mAh g-1), respectively. The results indicate that the La2O3 coating could reduce the electrode polarization and enhance the rate capacities.
Preparation of (La0.8Sr0.2)2FeNiO6-Δ Nanopowder by Pechini Method and Its Sensitivity to NO2
Authors: Zhou Lihong , Duan Wei , Hu Bikang , Xiao Jianzhong
Published: July 2018

The nano-sized (La0.8Sr0.2)2FeNiO6-Δ (LSFN) double perovskite powder without impurity phase was successfully prepared using the Pechini method. The result demonstrated that the electrode sensing properties to NO2 were affected by the sintering temperature. The sensor with 1300°C-sintered LSFN sensing electrode exhibited the highest NO2 sensitivity.
Experimental and Numerical Analysis of The Used Hollow Slab
Authors: Hua Xudong , Xue Xingwei , Zhou Junlong , Zhang Hai
Published: July 2018

The actual bearing capacity of a bridge in active service is crucial to the structure, but such data is generally difficult to obtain. In order to obtain the actual ultimate bending capacity of the used hollow slab, a destructive test of a hollow slab, which has been used ten years, has been carried out. Moreover, based on the experimental analysis of the material parameter data, a three-dimensional finite element nonlinear analysis model of the used hollow slab was established. Through the experiment and finite element analysis of the used hollow slab, the comparisons of the failure mode, crack propagating and ultimate bending capacity were focused on. The main conclusions obtained through the study are as follows: (1) Strand is a kind of stable prestressed material, which can maintain good mechanical properties for a long time; (2) The used hollow slab still maintains good ultimate bending capacity, although underwent a decreased rigidity due to long-term cumulative damage; (3) The total strain fracture model is qualified for simulating the nonlinearity of concrete material, and can obtain the ultimate bearing capacity of reinforced concrete structure effectively as well as simulates the development of cracks well.
Experimental Study on Anchorage Performance of Steel Bars with FRP Confined Rings
Authors: Jin Qiao , Li Jinglong , Gao Meng , Wen Xuebin , Zhao Zeming
Published: July 2018

In order to study the performance of reinforcement anchorage connection with FRP restrained ring, static tensile tests were carried out on 66 specimens, The main parameters considered in the test such as the diameter of steel bars, the diameter and thickness of the restraint ring, the strength of concrete and the length of anchorage. The result shows that the anchorage performance of the steel bar can still be guaranteed even if the anchorage length reaches 0.8la, There is no slip and local destruction phenomenon between FRP restraint ring and internal grouting material and peripheral concrete. The study conclusions also indirectly prove that the proposed technique is a reinforcement connection method for fabricated concrete structures with many good performances including the reliable performance, simple construction process and good economic benefit, which is suitable for construction industrialization of prefabricated reinforced concrete structures..
Quantitative Analysis for Aluminium Alloy Welding Quality based on Current Sample Entropy
Authors: Fa Liao Tian , Hui Wei Xiao , Xu Yu
Published: July 2018

This paper proposed a kind of analysis method for the aluminium alloy welding quality based on current sample entropy to solve the difficulties in the quantitative analysis for the welding stability of aluminium alloy. With the decrease of electrical signal stability, the sample entropy mean increased, and the standard deviation of sample entropy increased. The welding stability was evaluated by the product of the sample entropy mean and the standard deviation, and this was verified well by the test.
Identification and management of unsafe behaviors of lifting workers on the construction site based on HAZOP
Authors: Niu Yunong , Chen Quan
Published: July 2018

Hazard and operability study (HAZOP), which is applied to identify the hazards of a system and its operability, finds application in identifying unsafe behaviors of operators after redefining the “guide words” and “process requirements”. In this paper, unsafe behaviors of lifting workers on the construction site and the risk they brought were identified using the redefined HAZOP. Then, the causes of these behaviors were revealed after sorting and analysing these behaviors.. Finally, based on these causes, appropriate management measures were developed for effectively reducing accidents in lifting operations.
The Study on Construction Technique about The Reinforced Concrete Retaining Wall’s Lateral Displacement Repairing
Authors: Shang Yu HAN , Kai Ren LI , Fang Qiu
Published: July 2018

Based on the stress characteristics and the composition of lateral deformation about retaining wall structure, a kind of lateral displacement repairing construction technique of reinforced concrete retaining wall is proposed. Meanwhile, the process principle, construction process and quality control points of the technique are systematically analyzed in this paper. From the application effect of site engineering, the construction proposed in the paper has good engineering benefit and promotion value.
Research and application of a new soil moisture sensor
Authors: Zhang Xingchao , Yang Chengzhi , Wang Lu
Published: July 2018

The measurement of soil moisture is the basis for the refinement of agriculture to implement water-saving irrigation. A new soil moisture sensor was designed based on its theoretical basis and analysis of the dielectric constant characteristics of soil. It mainly consists of probes, electronic circuits and wiring cables. The calibration test of the sensor was conducted under the working voltage of 2.5 ~ 5.5V. Using the experimental data to analyze the regression function, it was found that the output voltage of the sensor should have a linear negative correlation with the volumetric moisture content of the soil, and the coefficient of determination R2>0.986.The accuracy of the sensor was verified by soil samples with different moisture content. The average absolute value of absolute errors is less than 2.5%. The results show that the sensor has stable and reliable working performance, high measurement accuracy and good linearity, and is suitable for moisture measurement in most types of soil.
An Overview of Chassis Dynamometer in the Testing of Vehicle Emission
Authors: Yang Zhuo , Deng Baoqing , Deng Mengqi , Huang Shaojia
Published: July 2018

Air pollution is a risk to health and the vehicle emission is becoming a serious cause of the air pollution. Vehicle emission is influenced by many factors. The measurement of the vehicle emission can be achieved by the chassis dynamometer which can simulate the driving on the real road. The chassis-dynamometer-based testing can provide a repeatable experiment and precise emission evaluation under various driving condition. In this paper, we review the testing of vehicle emission based on a chassis dynamometer. The investigation results manifest that advance testing method for achieving the real-world driving resistance should be studied and better data analysis method should be proposed to get a more reasonable driving cycle.
Strength Analysis and Optimization Design of A Platform Used for Transporting and Releasing Large Stratospheric Airship
Authors: Jianglong Zhou , Xiaojun Meng , Xiaolong Wu , Xiaopeng Cao , Kai Guo , Yunfei Li , Baogang Geng
Published: July 2018

It is important to transport and release a large airship safely because of the big size. In order to complete the transfer of large stratospheric airship, a truss transfer platform is built. Based on MATLAB and FEMAP, a semi-parametric method is used to establish the model of the platform which is consisted of rectangular steel tube in this paper. With a finite element software ABAQUS, a study of mechanical property of the platform is carried out. The simulation result shows that the force of the platform is mainly caused by the weight of trusses. The force of airship and other attached devices has little effect on the structure. Then, optimal parameters of extended platform are obtained according to the mechanical properties and optimization design. At last, the simulation results are verified by the experiment.
Analysis of temperature field of grain and drying medium for grain drying integrated mechanical device.
Authors: Wang Heng , Cao Shukun , Cui Yi , Cao Zijian , Xu Shuqiang
Published: July 2018

In order to improve the working efficiency of the drying tower and the hot blast stove in the process of grain drying, this paper proposes a method to solve the problems of air pollution and energy waste caused by excessive combustion or insufficient combustion of the hot blast stove. Based on finite element analysis, this paper uses ANSYS software to simulate the drying process of grain. This paper briefly introduces the grain drying device model and working mechanism, analyzes the temperature field of the drying device, and studies the influence on the drying effect of the working parameters (hot water, hot air, hot air hot blast stove combustion temperature) during the grain drying process. The results show that the hot air temperature is 85°C, the hot water temperature is 90°C, the combustion chamber temperature is 480°C, the grain drying effect is good, the combustion efficiency of the combustion furnace is the best, and the energy utilization rate is the highest.
Study on Safety Demand Law of Coal Miners Based on Maslow’s Demand Level Theory
Authors: Youli Yao , Xiaoxia Li , Yingjian Peng , Lili Xu
Published: July 2018

In order to research on the law of man demand for safety and get safety man to know the law to validly make decision, studying on safety demand law becomes more important. According to Demand Level Theory put forward by American psychologist Maslow, applying Fuzzy mathematics, humanization demand law for safety has been researched on deeply. During every development stage, not only one demand exists, but all demand exits; just only one takes leading site. While live demand leading most important site, safety demand and others are less. Only if living demand meets satisfaction, safety demand can take up the site. So, same occupational and health standard for developed country and developing country, that is irrational. Research achievement can get safety decision maker to gather human safety demand law and truly hold human demand level in different historical and region conditions; it can help macrocosmic policy-making and microcosmic regulation to be done rightly in safety management method and safety investment; it can help decision project, technology and economy condition and human demand level to harmony. It is important for safety subject development in theory and application.
Research on the design of power generation system for 50MV wind farm
Authors: Mingsheng Zhang , Hesong Wu , Wenkui Wan , Peilei Feng
Published: July 2018

With the rapid development of the global economy, wind power generation has attracted wide attention all over the world. With the rapid development of all kinds of new energy in the world, wind power generation has a huge international market and broad prospects for development. Based on the actual situation of the local wind power generation project in a city, this paper analyses the feasibility of the wind power generation system in the local area. According to the type selection and arrangement of various types of wind motors, a reasonable electrical wiring part is designed. The research shows that wind power is of high comprehensive value. Wind power plants can be built in areas with suitable geographical conditions and sufficient wind energy. After the completion of the above power generation projects, the advantage of local wind energy resources will be fundamentally changed into economic advantage.
Insulated Cable Temperature Calculation and Numerical Simulation
Authors: Li Xin-jian , Yang Jun , Yan Bing-qiang , Zheng Xiao
Published: July 2018

A mathematical model of electrified insulated cable was established to calculate temperature of insulating layer. The insulating layer temperature is determined as a function of the current intensity, time, insulation layer thickness, etc. A widely used polyvinyl chloride (PVC) cable with sectional area of 4 mm2 was selected as example and its insulating layer temperature was simulated using ANSYS. The simulation revealed the evolution of insulating layer temperature with time, and also along radius after a certain time when the cable was applied with 40A and 60A constant current respectively. The analysis method has practical significance to prevent electrical fire and can be applied to analyze spontaneous combustion accident of insulated cable.
Application of intelligent anchor cable axial force monitoring system in foundation pit support engineering
Authors: Zheng-jun HUANG , Lei ZHANG , Shen-hua JIAO , Yu LIU , Dong ZHANG , Liang ZHANG
Published: July 2018

Using the self-developed intelligent anchor (cable) axial force monitoring system, real-time on-line monitoring of the axial force of the prestressed anchor and anchor cable in the foundation pit support structure system is realized. The system has automatic acquisition, wireless transmission, real-time monitoring and other advantages. Through actual engineering application and comparative analysis of traditional methods of monitoring data, it can be seen that the monitoring data is also valid and reliable, and the continuity and difference error of the measured curve is better than the traditional method. The system monitoring data can better reflect the relationship between the support structure stress, deformation and construction process in the foundation pit engineering and provide a strong guarantee for the safe and efficient construction of the foundation pit project.
The damage mechanism of water tower in Shaanxi Provence during Wenchuan Earthquake
Authors: Li Chunfeng , Luo Xuyang , Duan Rui , Shu Youliang , Dai Wangqiang , Liu Chung , Yan Qingmin , She Tianshe , Shi Xinghai
Published: July 2018

Through the collection, collation and analysis of the data about damage of Water tower in Shaanxi Provence during 12 May 2008 Wenchuan Earthquake, the mechanism of long-period damage of the water tower is given. The analysis shows that, in Hanzhong basin, Ankang basin, and Weihe basin, serious damage should be caused by the long-period effect of basin of large earthquake in the far field. That magnitude of Wenchuan Earthquake is high, three basins are at the direction where the Wenchuan Earthquake wave propagated, and the epicentre is from 400 to 600km determines that the Wenchuan earthquake has the condition producing long-period effect in the three basins. In addition, the basins have very thick deposits, as well as possible basin edge effect may enhance long period damage. The damage of long-period of water tower results from the resonance between water tower and long-period ground motion.