bluuebunny/crossref_metadata_2025 huggingface dataset:
Temporal and spatial distribution of under-five mortality and factors associated with multiple cases of under-five deaths within a family in the rural area of Khuzestan, Southern Iran
Authors: Anafcheh Tofigh , Yaghoubi Doust Mahmoud , Mojadam Mehdi , Mirkazemi Roksana , Khafaie Morteza Abdullatif
Published: December 2018

Under-five mortality (U5M) is an important indicator of the overall health and development of society. There is a wide gap in U5M among different countries and also within the countries. This study was carried out to assess the prevalence, as well as the socio-demographic, and health-related causes of U5M in the region of study. A cross-sectional study was conducted among all registered cases of U5M in rural areas of Khuzestan province, Iran, during the years 2011 to 2015. To assess the socio-demographic determinants of U5M, the sample surveyed consists of 320 families with at least one under-five death using a multistage random sampling method. Also, this study evaluated the number of variables, which may increase the chance of families to have more than one U5M. U5M was 26 per 1000 live births in 2011, but decreased to 22 per 1000 live births in 2015. With the highest cumulative incidence of 43 in Masjed Soleyman and the lowest of 15 in Dehdez, infant mortality constitutes 76% of all U5M. Prematurity and congenital anomalies were responsible for 46% of all causes of mortality (that is, U5). Maternal age at delivery <18 years or >35 years (OR = 3.5; 95% CI, 1.29–6.22), marriage duration >9 years (1.85, 1.06–3.21), spouse age gap >5 years (2.32, 1.20–4.50), cesarean section (3.85, 1.19–5.74), delivery interval <3 years (2.83, 1.22–5.58), non-Arab ethnicity (2.58, 1.50–4.44), and mother working in agriculture or animal husbandry (3.93, 1.41–6.94) were the most important determinants associated with more than one child death per family. Spatially, there was a great disparity in U5M with different reduction rate during the 5 years of the study. Marriage age, cesarean delivery, delivery interval, and mother field activity were associated with U5M. This may have implications for the preventive health program.
Publisher Correction: AMPK-dependent phosphorylation of cingulin reversibly regulates its binding to actin filaments and microtubules
Authors: Yano Tomoki , Torisawa Takayuki , Oiwa Kazuhiro , Tsukita Sachiko
Published: December 2018

A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.
Investigating homogeneous Co/Br−/H2O2 catalysed oxidation of lignin model compounds in acetic acid
Authors: Clatworthy Edwin B. , Picone-Murray Julia L. , Yuen Alexander K. L. , Maschmeyer Richard T. , Masters Anthony F. , Maschmeyer Thomas
Published: December 2018

The catalytic oxidation of lignin model compounds by Co/Br−/H2O2 is investigated; substituting Br− for N-hydroxyphthalimide improved substrate conversion and product yield.
Adjusting the acidity of sulfonated organocatalyst for the one-pot production of 5-ethoxymethylfurfural from fructose
Authors: Dai Jinhang , Liu Zhongbao , Hu Yexin , Liu Shuqing , Chen Linfeng , Qi Ting , Yang Huaqing , Zhu Liangfang , Hu Changwei
Published: December 2018

A novel sulfonated organocatalyst bearing stable double H-bonds shows high catalytic performance and good reusability for the tandem production of 5-ethoxymethylfurfural (EMF), a biofuel candidate, from biomass-derived fructose.
Prediction on the origin of selectivities of NHC-catalyzed asymmetric dearomatization (CADA) reactions
Authors: Wang Yang , Wu Qiu-Yu , Lai Tian-Hua , Zheng Kai-Jun , Qu Ling-Bo , Wei Donghui
Published: December 2018

The mechanism and origin of selectivities of NHC-catalyzed dearomatization reaction have been theoretically studied.
A dual functional MOF-based fluorescent sensor for intracellular phosphate and extracellular 4-nitrobenzaldehyde
Authors: Das Aniruddha , Das Sourik , Trivedi Vishal , Biswas Shyam
Published: December 2018

A hydrazine-functionalized Zr(iv) MOF was used for the selective and sensitive detection of intracellular PO43−ions and extracellular 4-nitrobenzaldehyde.
Enhanced heterogeneous activation of peroxymonosulfate by Co and N codoped porous carbon for degradation of organic pollutants: the synergism between Co and N
Authors: Wang Guanlong , Nie Xiaowa , Ji Xiaojing , Quan Xie , Chen Shuo , Wang Haozhi , Yu Hongtao , Guo Xinwen
Published: December 2018

Benefiting from the synergistic effect between Co and N, Co and N codoped porous carbon displayed largely enhanced PMS activation for organic pollutants degradation.
Emerging investigator series: quantification of multiwall carbon nanotubes in plant tissues with spectroscopic analysis
Authors: Das Kamol K. , Nava Valeria , Chang Che-Wei , Chan James W. , Xing Baoshan , Yang Yu
Published: December 2018

A rapid widely accessible spectroscopic analysis was developed for quantification of carbon nanotubes in plant tissues.
Theanine attenuates memory impairments induced by klotho gene depletion in mice
Authors: Nguyen Bao Trong , Sharma Naveen , Shin Eun-Joo , Jeong Ji Hoon , Lee Sung Hoon , Jang Choon-Gon , Nah Seung-Yeol , Nabeshima Toshitaka , Yoneda Yukio , Kim Hyoung-Chun
Published: December 2018

Theanine (γ-glutamylethylamide), an amino acid in tea, is a putative neuroprotective and antioxidant compound capable of improving lifespan and cognitive function.
Development of anti-photo and anti-thermal high internal phase emulsions stabilized by biomass lignin as a nutraceutical delivery system
Authors: Chen Kai , Lei Lei , Qian Yong , Yang Dongjie , Qiu Xueqing
Published: December 2018

β-Carotene was encapsulated in natural lignin-stabilized HIPEs and exhibited good resistance to photodegradation and thermal degradation as well as bio-accessibility.
Progress toward allosteric ligands of metabotropic glutamate 7 (mGlu7) receptor: 2008–present
Authors: Vázquez-Villa Henar , Trabanco Andrés A.
Published: December 2018

Metabotropic glutamate type 7 (mGlu7) receptor is a member of the group III family of mGlu receptors.
Templated fabrication of hierarchically porous metal–organic frameworks and simulation of crystal growth
Authors: Duan Chongxiong , Zhang Hang , Yang Minhui , Li Feier , Yu Yi , Xiao Jing , Xi Hongxia
Published: December 2018

Hierarchically porous MOF materials were rapidly synthesized in a (Cu, Zn) hydroxy double salt (HDS) solution using a novel surfactant as template at room temperature and ambient pressure, and their growth mechanism was disclosed via mesodynamics (MesoDyn) simulation.
Novel potential artificial MRSA DNA intercalators: synthesis and biological evaluation of berberine-derived thiazolidinediones
Authors: Sun Hang , Ansari Mohammad Fawad , Battini Narsaiah , Bheemanaboina Rammohan R. Yadav , Zhou Cheng-He
Published: December 2018

Novel berberine-derived thiazolidinediones as potential artificial DNA intercalators were synthesized, and the preliminary mechanism suggested that active compound 6b could intercalate into MRSA DNA.
Rapid decoloration of azo dye Direct Blue 6 by AlCrFeMn high entropy alloy
Authors: Wu Shikai , Pan Ye , Wang Ning , Dai Weiji , Lu Jie , Lu Tao
Published: December 2018

In recent years, high entropy alloys (HEAs) have attracted a lot of attention from researchers due to their outstanding mechanical properties, but there are few reports about their functional performance.
Degradation of chemical warfare agents over cotton fabric functionalized with UiO-66-NH2
Authors: Kim Min-Kun , Kim Sung Hun , Park Myungkyu , Ryu Sam Gon , Jung Hyunsook
Published: December 2018

We develop a very efficient modification method of cotton fabric to be functionalized with a MOF via mercerization.
Facile synthesis of novel calcium silicate hydrated-nylon 6/66 nanocomposites by solution mixing method
Authors: Estrada-Flores S. , Martínez-Luévanos A. , Bartolo-Pérez P. , García-Cerda L. A. , Flores-Guia T. E. , Aguilera-González E. N.
Published: December 2018

In this work it was possible to synthesize novel CSH-nylon 6/66 nanocomposites using a simple and easy methodology such as the solution mixing method and using green solvents like water, formic acid and ethanol.
Synthesis of silver nanoparticle-decorated hydroxyapatite (HA@Ag) poriferous nanocomposites and the study of their antibacterial activities
Authors: Ni Zhihui , Gu Xiuxian , He Yali , Wang Zhihua , Zou Xueyan , Zhao Yanbao , Sun Lei
Published: December 2018

We demonstrate a facile and green rapid approach for the synthesis of uniform poriferous hydroxylapatite (HA) and poriferous silver nanoparticles (Ag NPs)-decorated hydroxylapatite (HA@Ag) nanocomposites with excellent antibacterial properties.
New insights into decomposition characteristics of nanoscale methane hydrate below the ice point
Authors: Wan Lihua , Liang Deqing , Guan Jinan
Published: December 2018

In this paper, molecular dynamics simulation was used to study the decomposition process of nanoscale methane hydrate at 1 atm and 227 K.
Cu-catalyzed cross-coupling reactions of vinyl epoxide with organoboron compounds: access to homoallylic alcohols
Authors: Lu Xiao-Yu , Li Jin-Song , Wang Jin-Yu , Wang Shi-Qun , Li Yue-Ming , Zhu Yu-Jing , Zhou Ran , Ma Wen-Jing
Published: December 2018

Copper-catalyzed cross-coupling reactions of vinyl epoxide with arylboronates to obtain aryl-substituted homoallylic alcohols are described.
The fast and efficient KI/H2O2 mediated 2-sulfonylation of indoles and N-methylpyrrole in water
Authors: Zhang Jun , Wang Zhong , Chen Lingjuan , Liu Yan , Liu Ping , Dai Bin
Published: December 2018

The rapid and efficient KI/H2O2-mediated 2-sulfonylation of substituted indoles and N-methylpyrrole was established.
Phosphine-mediated enantioselective [1 + 4]-annulation of Morita–Baylis–Hillman carbonates with 2-enoylpyridines
Authors: Wang Tao , Zhang Pengfei , Li Wenjun , Li Pengfei
Published: December 2018

This work describes a phosphine-catalyzed asymmetric [1 + 4] annulation of Morita–Baylis–Hillman carbonates with 2-enoylpyridines for constructing the enantiomerically enriched 2,3-dihydrofuran motif.
Kinetics-assisted discrimination of active sites in Ru catalyzed hydrolytic dehydrogenation of ammonia borane
Authors: Fu Wenzhao , Chen Wenyao , Qian Gang , Chen De , Yuan Weikang , Zhou Xinggui , Duan Xuezhi
Published: December 2018

The kinetics-assisted method is simple yet effective in discriminating Ru edge atoms as the dominant active sites for the reaction.
A generalizable method for the construction of MOF@polymer functional composites through surface-initiated atom transfer radical polymerization
Authors: He Sanfeng , Wang Hongliang , Zhang Cuizheng , Zhang Songwei , Yu Yi , Lee Yongjin , Li Tao
Published: December 2018

A universal method to grow polymers on MOF surfaces with well-defined thickness, sequence and functionality.
NH2-MIL-125(Ti)-derived porous cages of titanium oxides to support Pt–Co alloys for chemoselective hydrogenation reactions
Authors: Gu Zhizhi , Chen Liyong , Li Xuezhao , Chen Lin , Zhang Yingyue , Duan Chunying
Published: December 2018

Porous cages of titanium oxide anchored Pt–Co alloys are prepared by an amino acid-mediated solvothermal process to transform NH2-MIL-125(Ti). The hybrids display high-efficiency chemoselective hydrogenation of α,β-unsaturated aldehydes to unsaturated alcohols under mild conditions.
Indentation response in porcine brain under electric fields
Authors: Qian Long , Sun Yifan , Tong Qian , Tian Jiyu , Ren Zhuang , Zhao Hongwei
Published: December 2018

Characterization of the mechanical behavior of brain tissue under varying electric fieldsviaindentation for the first time.
Reaction processes among self-propelled particles
Authors: Peruani Fernando , Sibona Gustavo J.
Published: December 2018

Herein, we study a system of self-propelled disks that perform run-and-tumble motion and undergo a reaction process.
Room-temperature-processed fullerene single-crystalline nanoparticles for high-performance flexible perovskite photovoltaics
Authors: Zhao Xiaoming , Tian Lixian , Liu Tianjun , Liu Hongli , Wang Shirong , Li Xianggao , Fenwick Oliver , Lei Shengbin , Hu Wenping
Published: December 2018

Room-temperature-processed C60 single-crystalline nanoparticles were employed as a high-performance organic electron-selective scaffold for both rigid and flexible perovskite solar cells.
Ultralight MXene-based aerogels with high electromagnetic interference shielding performance
Authors: Bian Renji , He Gaoling , Zhi Weiqiang , Xiang Shanglin , Wang Tingwei , Cai Dongyu
Published: December 2018

This work for the first time reports a freeze-casting route for fabricating an ultralight MXene aerogel (ρ < 10 mg cm−3) without using external supporters.
Flexible ultra-short channel organic ferroelectric non-volatile memory transistors
Authors: Li Enlong , Wu Xiaomin , Lan Shuqiong , Yang Qian , Fang Yuan , Chen Huipeng , Guo Tailiang
Published: December 2018

Ferroelectric non-volatile memory devices are the most promising type of memory for future use in commercial applications.
Triplet exciton harvesting by multi-process energy transfer in fluorescent organic light-emitting diodes
Authors: Li Dan , Hu Yun , Liao Liang-Sheng
Published: December 2018

Fluorescent OLEDs based on the novel EML structure composed of exciplex:TADF sensitizers:fluorophores realized an EQE of 12.9%.
Common Terminology and Acoustic Measures for Human Voice and Birdsong
Authors: Badwal Areen , Poertner JoHanna , Samlan Robin A. , Miller Julie E.
Published: December 2018

Purpose

The zebra finch is used as a model to study the neural circuitry of auditory-guided human vocal production. The terminology of birdsong production and acoustic analysis, however, differs from human voice production, making it difficult for voice researchers of either species to navigate the literature from the other. The purpose of this research note is to identify common terminology and measures to better compare information across species.

Method

Terminology used in the birdsong literature will be mapped onto terminology used in the human voice production literature. Measures typically used to quantify the percepts of pitch, loudness, and quality will be described. Measures common to the literature in both species will be made from the songs of 3 middle-age birds using Praat and Song Analysis Pro. Two measures, cepstral peak prominence (CPP) and Wiener entropy (WE), will be compared to determine if they provide similar information.

Results

Similarities and differences in terminology and acoustic analyses are presented. A core set of measures including frequency, frequency variability within a syllable, intensity, CPP, and WE are proposed for future studies. CPP and WE are related yet provide unique information about the syllable structure.

Conclusions

Using a core set of measures familiar to both human voice and birdsong researchers, along with both CPP and WE, will allow characterization of similarities and differences among birds. Standard terminology and measures will improve accessibility of the birdsong literature to human voice researchers and vice versa.

Supplemental Material

https://doi.org/10.23641/asha.7438964
Compact dual‐mode dual‐band HMSIW bandpass filters using source–load coupling with multiple transmission zeros
Authors: Ieu Wangshuxing , Zhou Dongfang , Zhang Dewei , Lv Dalong
Published: December 2018

Compact dual‐mode dual‐band bandpass filters (BPFs) with multiple transmission zeros (TZs) using over‐mode half‐mode substrate integrated waveguide (HMSIW) resonators are presented. Each passband built by TE001 or TE201 has three TZs introduced by source–load coupling and low‐/high‐order mode cross‐coupling between TE001 and TE201 to improve the frequency‐selectivity. The equations that determined the TZs are built. Perturbation slots realise the independent‐control of frequency ratio. Dual‐mode dual‐band BPFs are designed, fabricated and measured, and the simulated results agree with the measured results well.
Analysis of the dielectric properties of R410A Gas as an alternative to SF6 for high‐voltage applications
Authors: Khan Bakhtiar , Saleem Jawad , Khan Faisal , Faraz Gul , Ahmad Rizwan , Ur Rehman Naveed , Ahmad Zahoor
Published: December 2018

Electric power industry is extensively using gas‐insulated systems for the transmission and distribution of electrical energy. In high‐voltage technology, the gas insulation is dominated by Sulphur‐hexafluoride (SF6) since the early 60th. It is a greenhouse gas and has long atmospheric lifetime. This paper proposes comparatively more environmental friendly R410 gas as an alternative to SF6 for high‐voltage applications. To validate the performance and theoretical concepts, it has been analysed experimentally. Buffer gases air and carbon dioxide were mixed with the base gas R410A to reduce the liquification temperature and global warming potential. Dielectric strength of R410A was tested for DC as well as AC voltage, results were compared with that of SF6 and other alternatives available in literature, and the results were comparable. Insulation self‐recoverability test of R410A was performed and the synergistic effect of the mixed gases was calculated. Consequently, this work has discovered that R410A is the suitable alternative to SF6 for high‐voltage applications.
Sound velocity profile estimation using ray tracing and nature inspired meta‐heuristic algorithms in underwater sensor networks
Authors: Mridula K. M. , Rahman Nafisur , Ameer P. M.
Published: December 2018

In water, the velocity of sound is a function of temperature, pressure, and salinity. The sound velocity in the ocean varies with depth and estimation of the sound velocity profile is interesting in its right for environmental monitoring. The sound velocity profile is required for sound navigation and ranging signal processing algorithms such as MUSIC. Also, the localisation of sensor nodes in an underwater sensor network requires a good estimate of the velocity profile. This study proposes an algorithm that calculates the sound velocity profile of ocean water using time of flight measurements between anchor nodes. The velocity profile is estimated in the discrete cosine transform domain to reduce the complexity of the algorithm, using two well‐known meta‐heuristic algorithms namely artificial bee colony and firefly algorithms. The Ray tracing method is used to improve the accuracy of the velocity profile. The Cramer–Rao lower bound of the proposed scheme is also derived. The localisation of a target node is also performed using the estimated sound velocity profile.
Single CCA for IEEE 802.15.4 networks: a cross layer energy model
Authors: Biswas Sankalita , Dhar Roy Sanjay , Chandra Aniruddha
Published: December 2018

For data frame transmissions in beacon‐enabled mode, an IEEE 802.15.4 node performs two consecutive clear channel assessments (CCAs) to sense the channel after back off. Here, the authors study what would happen if the medium access control (MAC) layer performs only one CCA instead. Although it is apparent that the frame transmission cycle would be shortened with single CCA, it is not straightforward to assess the effect of single CCA on the overall transmission energy. A Markov chain‐based MAC operation model is therefore constructed to analyse single‐CCA‐based MAC layer parameters. A combined physical (PHY) and MAC layer energy model is formulated next. It was found that the single CCA‐based MAC outperforms its standard double CCA‐based counterpart from the energy efficiency perspective.
Use of surface impedances in a 3D FEM linear model for the calculation of zero‐sequence magnetising impedances of three‐phase core‐type transformers
Authors: Sorrentino Elmer , Balliache Eizuneth , Burgos Juan Carlos
Published: December 2018

This article shows results of using surface impedances (ZSURFACE) in 3D FEM linear model to calculate zero‐sequence magnetising impedances (Z0M) of 3‐phase core‐type transformers. Initially, results with and without ZSURFACE are compared to obtain certainty about model validity. Compared results are magnetising reactances and active power losses in tank during Z0M tests. Subsequently, results of 3D models with ZSURFACE are compared with Z0M measurements at different currents, to consider nonlinearity of tank steel. An equivalent permeability for tank steel is estimated for each test point, and accurate results from model are obtained for magnetising reactances. An approximate curve for this equivalent permeability is also found, as in a previous 2D method, and both curves are similar from each other. It is shown that active power losses in tank cannot be properly computed using these 3D linear models. This fact cannot be observed by previous 2D models and it indicates that active power losses in tank are influenced by other phenomena, which are not considered by these FEM models. Main contributions are the application of ZSURFACE as a powerful tool to compute Z0M, and an analysis of active power losses in tank which could not be performed by previous 2D models.
CTMC modelling for H2H/M2M coexistence in LTE‐A/LTE‐M networks
Authors: El Fawal Ahmad Hani , Najem Mohamad , Mansour Ali , Le Roy Frédéric , Le Jeune Denis
Published: December 2018

Machine‐to‐machine (M2M) devices with their expected exponential booming in the near future, will be one of the significant factors to influence all mobile networks. Inevitably, the expected huge number of M2M devices causes saturation problems, and leads to remarkable impacts on both M2M and human‐to‐human (H2H) traffics, services, and applications. The research free‐space lack requires creating an appropriate model which describes the functionality of long‐term evolution‐advanced (LTE‐A) and long‐term evolution for machine (LTE‐M), through mathematical frameworks to evaluate relevant performance metrics. In this study, we bridge this gap by proposing a continuous‐time Markov chain (CTMC) model as a stochastic process tool to characterise the H2H/M2M coexistence based on analytical equations. Afterwards, the authors validate the proposed model through extensive Monte Carlo simulations. Eventually, it becomes approachable to characterise the impact of H2H/M2M coexistence in one LTE‐A/LTE‐M radio resource allocation in dense areas and under disaster scenarios. The simulation results show that using a prioritise LTE‐A system for both M2M and H2H traffics is convenient in dense area scenarios, while in emergency cases, it is more appropriate to use a non‐prioritise traffic strategy to keep H2H and M2M traffics working properly at the same time.
Simulation analysis of bird excretion's falling trajectory on high altitude area
Authors: Wang Huaqian , Wang Shenghui , Yang Guanghua , Lv Fangcheng , Han Bin , Wang Xiaoyv
Published: December 2018

With the continuous development of our national economy, human beings have become more aware of the ecological environment protection. Due to the rapid increase of species and numbers of birds in high altitude, frequent external insulation accidents occur in high‐voltage power transmission and transformation projects. In order to reduce the occurrence of bird injury and improve the reliability of line operation, this article analyses the trajectory of guano drop through experiments and simulations and analyses the status of bird droppings. First, the status quo of bird damage caused by accident is analysed. Second, the simulation of bird droppings is carried out by using MATLAB. After considering the viscoelastic properties of bird droppings, the simulation result is very similar to the drop trajectory of bird droppings. Finally, the shape is analysed.
Research on influencing factors and improving methods for DC distribution system stability
Authors: Zhao Xueshen , Peng Ke , Zhang Xinhui , Liu Jinsong , Zhao Yanlei , Chen Jiajia
Published: December 2018

In this paper, the Nyquist admittance ratio criterion was used to analyse the influencing factors on the stability of the system, such as the parameters of DC line, the intensity of interconnected AC power grid, the droop coefficient and etc. The theoretical analysis showed that the increase of the DC line resistance would decrease the system stability margin, while the increase of the DC line inductance had small effect on the system stability margin; the weaker the gird intensity was, the smaller the system stability margin was, while the larger the droop coefficient was, the larger the system stability margin was. In the case that AC and DC line parameters were the same, the system stability margin under U dc ‐I dc droop control mode was larger than that under U dc ‐P droop control mode. According to these influencing factors, suggestions were given to improve system damping and system stability through reducing the impedance of DC line, enhancing the interconnection of AC power grid and optimising the droop coefficient. Finally, a detailed simulation model was built with DIgSILENT simulation tool to verify the correctness of the above theoretical analysis by time‐domain simulation results.
Acorus calamus gold nanoparticles as enhanced anti‐microbial agents for transdermal patches
Authors: Chappalathottil Sethumadhavan Smina , Pottail Lalitha
Published: December 2018

During the past 20 years, there has been a drastic advancement in the formulation and administration of drugs. In comparison to the conventional oral, traditional and invasive methods of drug delivery, the transdermal (TD) delivery system offers enhanced drug delivery through skin permeation. TD delivery market is contributing greatly to the medical field as it is as an alternate to all other medicinal intake approaches. Nanoparticles enhance the performance of biomaterials in cancer therapy, drug delivery and microbial management. This study involves the synthesis of gold nanoparticles using the aqueous extracts of Acorus calamus and the incorporation of Acorus gold nanoparticles with the biomaterial collagen extracted and isolated from soy seeds. Collagen exhibits biodegradability, low antigenicity and superior biocompatibility in addition to its physiological properties as a natural extracellular matrix component. Acorus calamus mediated gold nanoparticles were fabricated onto TD patches using sonication technique. The treatment of synthesised gold nanoparticles as anti‐microbial agents for TD application against E. coli has been evaluated.
MALT90 molecular content on high-mass IR-dark clumps
Authors: Saral Gozde , Audard Marc , Wang Yuan
Published: December 2018

Context. High mass stars form in groups or clusters in dense molecular clumps with sizes of 1 pc and masses of 200 M⊙. Infrared-dark clumps and the individual cores within them with sizes < 0.1 pc and masses < 100 M⊙ are important laboratories for high-mass star formation in order to study the initial conditions.

Aims. We investigate the physical and chemical properties of high-mass clumps in order to better understand the early evolutionary stages and find targets that show star formation signs such as infall motions or outflows.

Methods. We selected the high-mass clumps from ATLASGAL survey that were identified as dark at 8/24 μm wavelengths. We used MALT90 Survey data which provides a molecular line set (HCO+, HNC, HCN, N2H+, H13CO+, HN13C, SiO) to investigate the physical and chemical conditions in early stages of star formation.

Results. Eleven sources have significant SiO detection (over 3σ) which usually indicates outflow activity. Thirteen sources are found with blue profiles in both or either HCO+ and/or HNC lines and clump mass infall rates are estimated to be in the range of 0.2 × 10−3 M⊙ yr−1 − 1.8 × 10−2 M⊙ yr−1. The excitation temperature is obtained as < 24 K for all sources. The column densities for optically thin lines of H13CO+ and HN13C are in the range of 0.4–8.8 (×1012) cm−2, and 0.9–11.9 (×1012) cm−2, respectively, while it is in the range of 0.1–7.5 (×1014) cm−2 for HCO+ and HNC lines. The column densities for N2H+ were ranging between 4.4–275.7 (×1012) cm−2 as expected from cold dense regions. Large line widths of N2H+ might indicate turbulence and large line widths of HCO+, HNC, and SiO indicate outflow activities. Mean optical depths are 20.32, and 23.19 for optically thick HCO+ and HCN lines, and 0.39 and 0.45 for their optically thin isotopologues H13CO+ and HN13C, respectively.

Conclusions. This study reveals the physical and chemical properties of 30 high-mass IR-dark clumps and the interesting targets among them based on their emission line morphology and kinematics.
Extended stellar systems in the solar neighborhood
Authors: Meingast Stefan , Alves João
Published: December 2018

We report the discovery of two well-defined tidal tails emerging from the Hyades star cluster. The tails were detected in Gaia DR2 data by selecting cluster members in the 3D galactocentric cylindrical velocity space. The robustness of our member selection is reinforced by the fact that the sources depict an almost noiseless, coeval stellar main sequence in the observational Hertzsprung-Russel diagram. The spatial arrangement of the selected members represents a highly flattened shape with respect to the direction of movement along the clusters’ orbit in the Galaxy. The size of the entire structure, within the limits of the observations, measures about 200 pc in its largest extent, while being only about 25 pc thick. This translates into an on-sky extent of well beyond 100 deg. Intriguingly, a top-down view on the spatial distribution reveals a distinct S-shape, reminiscent of tidal tails that have been observed for globular clusters and also of tails that were modeled for star clusters bound to the Galactic disk. Even more remarkable, the spatial arrangement as well as the velocity dispersion of our source selection is in excellent agreement with previously published theoretical predictions for the tidal tails of the Hyades. An investigation into observed signatures of equipartition of kinetic energy, that is, mass segregation, remains unsuccessful, most likely because of the sensitivity limit for radial velocity measurements with Gaia.
Life cycle perspective on tourism management: the case of Borobudur village economic chamber
Authors: Hindami Zulfahmi Ilman , Hasibuan Hayati Sari , Chairani Ellyna
Published: December 2018

Borobudur Temple is one of the world cultural heritage owned by the Indonesian nation. The existence of this Borobudur temple has an impact for the surrounding community, one of which led to new tourist destinations. This study aims to analyze the tourism potential of the area around Borobudur Temple in the concept of sustainable tourism. This research was conducted by using life cycle assessment perspective on tourism activity in the district level, including: the primary inputs (resources), process and outputs. The data collected from one of the Village Economic Chambers in the districts surrounding the Borobudur Temple regions, named Borobudur VEC. The Borobudur VEC has provided two products and services: tempe mendoan and lodging services. Those two business products have different characteristics. The tempe mendoan business process requires more raw material than the lodging service business process. Based on the result, emission tempe mendoan production is more than from lodging services.
Study of recycling demolition waste material product in Jakarta, Indonesia
Authors: Sembiring Fransisca Theresia
Published: December 2018

Construction activities (construction and demolition) is one of the major contributors in the generation of waste generation in landfills. Recycling waste of demolition construction is considered effective, but for the case in Indonesia not many know the benefits of the utilization due to lack of socialization of the impact of construction waste and not many people who know the economic value in waste recycling products construction. The aim of this study is to analyze the potential of use construction waste recycling products in terms of economy and its development in Indonesia, case study in Jakarta area. This paper will use descriptive analysis with literature studies based on several references related to similar cases. The result show that 40-60% of waste from construction and construction can be recovered and recycled. Economically, waste minimization is also feasible because reuse of construction waste is estimated to be worth 2-3% of the total project budget. Therefore, the construction industry can save by applying waste minimization in the project.
The implementation of smart trash as smart environment concept
Authors: Rahmayanti Henita , Oktaviani Vina , Syani Yusuf
Published: December 2018

One of the efforts to improve the quality of urban environment is smart environment concept that has become one of six of smart city indicators such as smart government, smart economy, smart people, smart mobility, and smart living. Smart environment means an environment that provides comfort, resources, physical and nonphysical beauty, and visual for the people, also students in their schools. This research aimed to apply the concept of smart trash bin in schools. This smart trash bin that detects rubbish based on rubbish group (plastic and metal). In addition, the smart trash bin has a function as education for the students as well. It has explanation about knowledge and how to use the trash bin so the students have awareness to keep environment clean and beauty. The research used Research and Development method from Borg and Gall model. The target of this research was the students in elementary school. The final result of this smart trash bin was a feasibility test product. There will be a test for the students using questionnaire. So that this smart trash bin is effective to improve the knowledge of students about rubbish.
The renewability indicator and cumulative degree of perfection for gamboeng tea; part.1, exergy calculation of fresh tea leaf
Authors: Bardant Teuku Beuna , Haq Muthia Syafika , Setiawan Arief Ameir Rahman , Harianto Sugeng , Waluyo Joko , Mastur Adhi Irianto , Lestari Annisa Dieni , Sujarwo  , Sulaswatty Anny , Wiloso Edi Iswanto
Published: December 2018

Renewability Indicator (RI) and Cumulative Degree of Perfection (CDP) are employed as tools to assess sustainability of Gamboeng Tea. The assessment then compared with black tea process in Black Sea Region in Turkey from the previous study. Exergy analysis for Gamboeng tea was decribed in two part of articles. This first part was desribing the energy and exergy calculation for producing fresh tea leaf in Gamboeng tea plantation. The energy and exergy utilization for black sea fresh tea leaves was calculated to be 807.83 MJ/t of fresh leaf, 273.43MJ/t of fresh leaf, respectively. For the Gamboeng green tea, the energy and exergy utilization were 1496.38 MJ/ t of fresh leaf and 821.86 MJ/t of fresh leaf, respectively.The second part desribed cooperation of wood pellet with ambient-adapting controller uin tea factorywas a contribution from Gamboeng Tea for achieving Sustainable Development Goal which is affordable and clean energy and also an applicable climate action.
Rethinking value added tax on drinking water supply system: evidence based policy from Indonesia
Authors: Rosdiana Haula , Sidik Machfud , Hidayati Mainita , Murwendah
Published: December 2018

Value Added Tax (VAT) for Drinking Water Supply System (DWSS) in Indonesia has not been formulated impartially, holistically and comprehensively by involving related institutions/ ministries. There are disputes that causes a high cost of taxation that discourages the achievement of Millennium Development Goals target. It is notably significant to put the VAT policy on DWSS in the paradigm of national interests and fulfillment of human rights. This study used the paradigm of constructivism with data collection technique through in-depth interviews and Focused Group Discussion (FGD). An evidence based policy was adopted to conduct a better outcome of the study to promote amendment of related VAT regulations. The results of the study indicate an inconsistency between VAT policy and Government Regulations, both Minister of Health Regulations and other Ministries Regulations on Drinking Water Supply System. The impact of the inconsistency was the tax dispute that ultimately causes a high cost of taxation on both sides as well as VAT treatment inconsistency within the drinking water providers (PDAMs) themselves. A practical implication of this study generates the enactment of Government Regulation Number 40/2015 as an amendment of prior regulation concerning VAT exemption on DWSS.
Partners not for life? on the determinants of marriage dissolution in Indonesia
Authors: Handalusia Husni Vici , Chaikal Nuryakin , Gerald Massie Natanael Waraney
Published: December 2018

While there have been numerous studies exploring the determinants of divorce in social science, economic studies on such marriage dissolution are scarce. Our study aims to examine the cause of divorce in Indonesia, exploring the socio-economic and demographic determinants including risk preference as to why couples choose whether to divorce or stay married. This study utilizes the data on married men and women from Indonesian Family Life Survey 2007 and 2014. In relation to husband-wife working composition, we find a very specific condition leading to marriage dissolution: when the wife is the only working, the main source of income of the family. The result indicates that there is a clash between the traditional family structures, especially a man as the househusband and the demographic change in the labor market for the sustainability of marriage. Furthermore, variables such as age, whether the marriage is the first marriage or not, and religiosity show considerable predictive validities.
Disaster mitigation of climate change effects on small islands (case of Harapan and Kelapa Islands)
Authors: Zulriskan Ade Panca , Koestoer Raldi Hendrotoro , Alwini Adil Faisal
Published: December 2018

The vulnerability is the sequence of condition that determines whether a hazard will cause disaster or not. The small islands are easily affected by the climate change effects. The small islands are particularly vulnerable to the projected of climate change effects. Harapan and Kelapa Islands is a small island in the Thousand Islands Region, DKI Jakarta Province. This study aims to analyze of climate change effects on social, economic, and environmental on small islands. This study using key indicators consist of social, economic, environment, and climate change. The methods applied in this research is GIS and system dynamics or called by spatial dynamics. The result showed that the area of study categorized as the vulnerable area to the climate change effects, this is due to the increasing sea level rise and rainfall, the growing population number and density, and the expanding built area. Therefore, the need for disaster mitigation and adaptation efforts on the climate change effects.
Granulated asphalt mix based on industrial and domestic waste
Authors: Ignatiev Alexey , Gerasimov Denis , Golikov Igor , Gotovtsev Valeriy
Published: December 2018

The paper presents the results of experimental studies to identify the possibility of using large-tonnage industrial mineral waste in the production of asphalt concrete mixtures. As a raw material for the production of asphalt used phosphogypsum - waste production of phosphoric acid, resulting from the processing of apatite. The reserves of this product are measured in millions of tons and are constantly replenished, stored in open dumps, representing a serious threat to the environmental situation in the surrounding areas. Phosphogypsum is a mineral powder material, the dispersion characteristics of which correspond to the mineral powder in the production of asphalt concrete. The method of production of granulated as-falto-concrete mixture developed by the authors of the article by the method of rolling involves the use of a significantly higher content of expensive mineral powder in comparison with typical mixtures. Therefore, the use of cheap phosphogypsum for these purposes is very attractive. However, the first attempts to obtain a granulated product based on phosphogypsum were unsuccessful - the asphalt-concrete mixture did not withstand the effects of moisture. Further studies allowed us to solve the problem of material resistance by modifying bitumen with polyethylene terephthalate, one of the most common household plastic waste. The subject of the article is devoted to the development of prescription and regime parameters of the process of obtaining new material. Test methods for asphalt concrete are strictly standardized in connection with which standard techniques were used. As a result of the research, an asphalt-concrete mixture was obtained, surpassing typical materials in many performance characteristics and allowing to solve a global environmental problem.
The Effect of Using Palm Kernel Shell Ash and Rice Husk Ash on Geopolymer Concrete
Authors: Hardjasaputra Harianto , Fernando Ivan , Indrajaya Judith , Cornelia Melanie , Rachmansyah
Published: December 2018

As already known, cement production is one of the biggest contributors to CO2 emissions due to combustion processes that require high temperatures. This can trigger global warming so the solutions to reduce or even eliminate the use of cement continue to be developed. Geopolymer concrete is one solution to reduce the use of cement in the construction industry in the world. This study has the main objective to examine the effect of the use of palm kernel shell and ash rice husk ash in geopolymer concrete mixes on the strength of geopolymer concrete then compared with the use of palm kernel shell ash and rice husk ash on Portland cement concrete. In this study concluded that increasing the strength of geopolymer concrete with the use of palm kernel shell ash and rice husk ash tends to be insignificant when compared to the increase in strength in Portland cement concrete. The changes in the concentration of NaOH solution is more effective to increase the strength of geopolymer concrete.
Influence of the place of the expiration of gases from the placement at the fire for critical time of formation of dangerous factors of the fire
Authors: Chelekova Evgenia
Published: December 2018

In normative documents for definition of time of approach of critical values of dangerous factors of the fire (DFF) use medium-volume characteristics of temperature, concentration of O2 oxygen, toxiferous gases and smoke. The purpose of this work – to show that for calculating time of approach of dangerous factors of the fire it is necessary to consider the place of the expiration of gases and their initial parameters. The expressions received in work can serve for determination of values of the dangerous factors of the fire parameters indoors depending on time, taking into account the place of the expiration of gases and their initial parameters. From the dependences given in work it is visible that differences in time taking into account the place of the expiration for the room of 5000 m3 are made by not less than 30 c with on reaching critical temperature and critical concentration of O2. Especially it should be noted that at change of height of a working zone the time difference increases to 40 c with in both parameters.
Effect of climate change on the annual energy consumption of a single family house in British Columbia
Authors: Mutasim Baba Fuad , Ge Hua
Published: December 2018

The Earth is already experiencing some of the effects of climate change, such as rising temperature, more frequent storms, increased precipitation, etc. This paper investigates the effect of climate change on the energy consumption of a single-family house with different energy efficiency levels, i.e. bylaw to meet current National Energy Code of Canada for Buildings (NECB), and passive house (PH) to meet the PH requirements under four climate zones in British Columbia, Canada. SRES A2, RCP 4.5 and RCP 8.5 emission scenarios are used to generate future climate for 2020, 2050, and 2080. The simulation results show that for both bylaw and PH cases, heating energy consumption will be reduced while cooling energy consumption will be increased, as a result for bylaw case, the energy consumption will be decreased for four climate zones, while for PH case, the energy consumption will be increased for zone 4 & 5 and decreased for zone 6 & 7. In climate zone 5, the building fails to meet the PH requirements during 2050. Therefore, buildings designed based on historical weather data will perform differently under the changing future climates, thus the efforts should be made to design buildings that are adaptable to climate change.
Classification and determination of working area of concrete placing booms
Authors: Koshkarev Yevgeny
Published: December 2018

A concrete placing boom is the final element of concrete mixture pipeline transportation system. It is designed to deliver the concrete mixture for discharging where and when required, therefore, similar to cranes, it must be equipped with at least two mechanisms: boom extension and rotation. The mechanisms can be both manually and hydraulically actuated, hence, booms are differentiated between mechanical (manually controlled) and hydraulically or electrically controlled. This article aims at describing the areas for using various categories of concrete placing booms.
Modeling the weight of a grab bucket for digging
Authors: Tsipurskiy Ilya
Published: December 2018

Modern construction of facilities of various types is accompanied by huge volumes of excavation works. The construction of surface and subsurface facilities requires the solution of a number of complex geotechnical problems, including those related to the creation of a deep underground cavity and a volume of hundreds of thousands of cubic meters. For soils of different categories of complexity of reservoir management at different depths, in some cases up to 50 meters, rope grab buckets are used. The article is devoted to the possibility of preliminary determination of the weight of an excavator grab bucket for excavation in developing the environment by creating various types of facilities. To determine the weight of the bucket, the existing empirical dependencies and the modeling method are used, which allows choosing the optimal weight of the excavator grab bucket for specific soil conditions. In this case, unlike the existing methods, the analytical calculations conducted do not only use the mass function of the soil developed, but also take into account the specificity of its resistivity to digging. Analytical dependence is given to determine the weight of the grab bucket for construction and practical recommendation of its preliminary choice for specific excavation works.
Calculation of a beam on an inhomogeneous basis
Authors: Atarov Nikolaj
Published: December 2018

The questions of analytical calculating the beam on the base with the modulus of deformation (modulus of elasticity), which is changed by thickness of the layer by power law, was deals in the article. The purpose of work was receiving finite expressions for reactive pressure of the basе on a beam and internal efforts in a beam when using model of the base with two characteristics (coefficient of subgrade resistance). A system of differential equations second-order with respect to the displacements of points the surface of a layer with a continuously changing modulus of elasticity was obtained based on the minimum of the total potential strain energy. The calculation of the rigid beam on the base on the action of the symmetric load was performed and the formulas for the reactive pressures of the base were got. Numerical calculation is executed and the analysis of influence of change of the module of deformation of a layer by the amount of reactive pressure and the bending moment in a beam was given. It is shown that with increase in the module of deformation on layer thickness the basе with two characteristics on nature of work is approaching vinklerovsky.