bluuebunny/crossref_metadata_2025_split huggingface dataset:
Preliminary study on runoff analysis of karst landforms in Yunnan Province
Authors: Wen Weichao , Lin Hong , Jiang Rucheng , Gu Shixiang 
Published: December 2019

Abstract
Runoff calculation in non-closed watersheds with no data area is a common problem encountered in the construction of water conservancy projects in our province. Judging from non-closed watersheds to runoff and flood analysis in non-closed watersheds has been a problem for operators. In this paper, based on the common problems in the hydrological calculation of the data-free karst area, the method of judging the non-closed watershed and the treatment of some problems in the actual runoff calculation are proposed. The estimated runoff results are also basically in line with local conditions.
Research on the Impacts of Warming Rate on Drought-flood in Huang-huai-hai River Basin of China
Authors: Yuan Zhe , Gao Zhiyang , Yin Jun , Xu Jijun 
Published: December 2019

Abstract
In this study, the sequential Mann-Kendall and Yamamoto test analysis are used to determine abrupt changes in temperature in Huang-huai-hai River Basin, while time series analysis via the traditional Mann-Kendall test and linear regression analysis for the different period is used to identify the basic trend of temperature. The results suggest that the temperature data can be divided into three periods: 1961-1985, 1986-1995 and 1996-2011. The slope of annual temperature during 1961-1985, 1986-1995 and 1996-2011 were -0.07°C(10yr)−1, 0.40°C(10yr)−1 and 0.04°C(10yr)−1 respectively. These three stages were defined as follows: Stage A (low temperature with no significant change), Stage B (sharp increase of temperature) and Stage C (stagnation of temperature increase). The drought/wet magnitude was assessed based on China-Z index and the area of drought/wet was calculated. The relationship between drought/wet area and temperature during the three stages was then analyzed and compared. The results showed that: during Stage A (low temperature with no significant change), flood area is comparatively big and drought area is small, but with acute interannual variation; during Stage B (sharp increase of temperature), flood area decreased but the drought area still increased; during Stage C (stagnation of temperature increase), flood area and drought area both had big interannual variation.
Hydrological Forecasting Real-time Adjustment Technique
Authors: Song Yu , Wang Hongrui , Yan Jiawei 
Published: December 2019

Abstract
The parameters of flood forecasting model are optimized in the information of the previous data. It will cause the forecast result deviate from reality when the job forecasts. If we select the appropriate real-time correction, we can use the error message of the reservoir flood forecast model. In this paper, we use the modern stochastic system theory, combine with the real-time adjustment technology of the modern stochastic system theory. The real-time adjustment model is applied to the reservoir flood forecasting project, which is beneficial to improve the accuracy of flood forecasting.
Effects of plastic film in a loosed powder form of sample preparation on elemental analysis by portable X-ray fluorescence spectrometer
Authors: Nuchdang S , Patthaveekongka W , Rattanaphra D 
Published: December 2019

Abstract
The aim of this research was to study the effects of plastic film types and film thickness on elemental analysis by portable X-ray fluorescence spectrometer (pXRF). Mylar polyester film with 3.6 μm and 6.0 μm thickness, and 4.0 μm Prolene thin film were used in this study. Five rock samples were prepared by loosed powder method. The pXRF analysis of each plastic films was calibrated and evaluated the method with seven reference materials. The calibrated curves of three films were strongly correlated to referenced values (R2 > 0.95) for Al, Ca, Fe, K, Mn, Si, Sr, Th, Ti, V, Y, Zn and Zr, except for Cu, Nb, Ni, P, U, V and W. The results showed that the pXRF could be used to determine some elements in rock samples and the thickness and types of the analyzed film influenced on the analysis. The element determination using each film required the developed method by calibration curve construction (linear regression of measured values obtained by the pXRF instrument against their certified values). In addition, the results after the recalibration of each film (both Prolene thin film and Mylar polyester film) agreed well.
Application of handheld X-ray fluorescence spectrometer for major element analysis and characterization of geological samples in Southern Thailand
Authors: Nuchdang S , Channuie J , Leelanupat O , Rattanaphra D 
Published: December 2019

Abstract
The handheld X-ray fluorescence spectrometer (hXRF) was applied to major element analysis in the geological samples and the results were compared with the results of the wavelength dispersive X-ray fluorescence spectrometer (WDXRF). In addition, the analytical compositions were confirmed by X-ray diffractometer (XRD) and scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX). In the case of pXRF analysis, eight geological reference materials were used to calibrate the analytical method and four known concentration samples were used to prove the method. In research, ten geological samples from Phuket province, Thailand were collected with different depths corresponding to O horizon (0-0.1 m), A horizon (0.1-0.3 m), B1 horizon (0.3-1.0 m), B2 horizon (1.0-2.0 m), C1 horizon (2.0-3.0 m), C2A horizon (3.0-5.0 m), C2B horizon (5.0-8.0 m), C3 horizon (8.0-12.0 m), D horizon (12.0-20.0 m) and RK horizon (> 20.0 m). The elemental analysis results showed that the pXRF results were matched well with that WDXRF results. The concentration range in ten samples were Si (18-22 wt%), Al (12-15 wt%), Fe (1-4 wt%), K (0.4-3.2 wt%) and Ti (0.2-0.4 wt%). The concentration of some elements such as Ca and Mg on those ten samples are low and they are unable to analysed by hXRF. The XRD patterns revealed that all samples consisted of quartz, kaolinite, halloysite, illite, vermiculite and biotite.
Effects of the combinations of 6 materials on the improvements in contaminant removals from surface water: purification mechanisms and adsorption kinetics
Authors: Zhao ZM , Wang ZF , Cheng MY , Zhang YJ 
Published: December 2019

Abstract
The study aims to improve the pollution control and eutrophication reduction in surface water by adding various materials and explore corresponding purification mechanisms. Methods: Six materials (H2O2, NaClO, persulfate, polyacrylamide, zeolite, and montmorillonite) were added into surface water. Different dosage combinations and treatment periods were arranged in the experiments. After the treatment, the contaminant removal performance was determined the water quality and toxic effects were analyzed. Results: The optimal dosages of the 6 materials were experimentally confirmed as follows: 0.3 mg/L H2O2, 0.03 mg/L NaClO, 5 g/L persulfate, 0.4 mg/L polyacrylamide, 20 mg/L zeolite, and 10 mg/L montmorillonite. The purification mechanisms involve chemical reactions and material adsorption. Conclusion: The combination of the 6 materials can be applied in surface water treatment as a green option.
Microbial production of poly (3-hydroxybutyrate) (PHB) from rubber seed oil using Cupriavidus necator H16
Authors: Reddy Prasad D.M. , Pendyala Rajashekhar , Senthilkumar R , Azri Mohammad Hazwan Bin 
Published: December 2019

Abstract
Rubber seed oil is inedible plant oil that is a potential replacement for the traditional organic building blocks used in PHB biosynthesis. Herein we describe the biosynthesis of PHB by Cupriavidus necator H16 grown in media with rubber seed oil and urea serving as carbon and nitrogen sources, respectively. The method was optimized over a temperature range of 30-50 °C for batch culture studies. A maximized PHB concentration of 15.4 g/L, and dry well weight of 19.2 g/L was obtained using 20 g/L of rubber seed oil at 30°C. Experimental results were used to generate a logistic curve, and the Luedeking-Piret model was implemented to predict the specific growth rate of C. necator at 0.1898 1/h. The estimated rate constants were in good agreement with experimental values. This study demonstrated that rubber seed oil is a viable alternative to conventional carbon sources for the production of PHB using C.necator H16.
Methodology of methane emission accounting in petrochemical and chemical industries of China
Authors: Zhang Ting , Zhang Yujue , Chang Yanrui , Duan Duoduo , Liu Xuezhi 
Published: December 2019

Abstract
Nowadays, the whole greenhouse effect is becoming more and more serious. It is the common mission of mankind to curb global warming. As the world’s second largest greenhouse gas (GHG), the warming potential caused by methane (CH4) is not negligible, so it is imperative to calculate and reduce its emissions. For the lack of CH4 accounting methodology in China’s petrochemical and chemical industries, this paper proposes a CH4 accounting methodology based on the enterprise’s accounting boundary. Emission sources include CH4 emissions from fuel combustion., CH4 emissions from flare gas combustion, CH4 emissions from escape, CH4 emissions from anaerobic treatment of sewage, CH4 emissions from accidental venting. The research results are an important exploration for the accurate measurement of CH4 emissions from enterprises in China’s petrochemical and chemical industries, and also complement the research on China’s greenhouse gas accounting methodology.
Early warning system through sustainability livelihoods approach for volcanic disaster management
Authors: Dewanti D S , Ayuwat D , Yongvanit S 
Published: December 2019

Abstract
The main objective of this study is to analyse the early warning system of volcanic disaster management through sustainable livelihoods approach. The early warning system is the most important phase on disaster management as to reduce the risk of hazard during the eruption appear. Active volcano in Indonesia has been spread since it is located in the ring of fire. This study uses sequential mixed methodology, start with qualitative-quantitative methodology. The study area are Mt. Slamet and Mt. Merapi where located in Java island. The first phase of the research uses exploratory qualitative methodology to identify the term of indicators for Sustainability Livelihoods Approach (SLA), hereafter quantitative is to calculate the path of each variable supported to volcanic disaster management. The qualitative approach took 31 key informants spread in two village surround Mt. Slamet and 19 key informants spread in two village surround Mt. Merapi. The sample of quantitative research on Mt. Slamet is 538 respondents and 137 respondents in Mt. Merapi. SLA is supported to the early warning system. Household networking for social capital directly effect to early warning phase both volcanoes. Nevertheless, human capital, natural capital, physical capital and financial capital is indirectly effect to early warning capacities through transformation of process and structure.
Ground water quality in natural forest and private forest (a case study in catchment area of lake Rawapening, Semarang District Central Java)
Authors: Murtiono U H , Wuryanta A 
Published: December 2019

AbstractThe availability and especially the quality of water are strongly influenced by forests (natural and private forest) and depend on proper forest management. Research location is in the catchment area of Lake Rawapening. The objective of this study was to identify groundwater quality in the area of natural forests (NF) and private forests (PF). Distribution and extent of both natural and private forests can be obtained from Indonesia Topographic Map, scale of 1:25,000 produced in the year of 2001 and updated with SPOT 2 image recorded in July 5th 2006. Groundwater samples were taken from natural and private forest as many as 3 samples. All the samples were taken during the dry and rainy season. Total amount of the samples were 12 and were analyzed in the laboratory of hydrology. The quality of groundwater is determined based on the regulation of the Ministry of Health of Republic of Indonesia No. 492/Menkes/Per/IV/2010. The results indicated that water samples from natural forests (NF1, NF2 and NF3) and private forests (PF1, PF2 and PF3) can be categorized as qualify for drinking water.
Selective laser melted Fe-Mn bone scaffold: microstructure, corrosion behavior and cell response
Authors: Shuai Cijun , Yang Wenjing , Yang Youwen , Pan Hao , He Chongxian , Qi Fangwei , Xie Deqiao , Liang Huixin 
Published: December 2019

Abstract
Iron metal possesses good biocompatibility and excellent mechanical strength, though it degrades too slowly. In this work, selective laser melting (SLM) was applied to fabricate iron-manganese (Fe-Mn) biodegradable scaffold. Results shown Fe-Mn scaffold exhibited a uniform pore structure with a porosity of 66.72 ± 2.3%, which highly matched with as-designed model. Phase analysis revealed Fe-Mn scaffold mainly contained α-Fe, martensitic and austenitic phases. Due to the potential difference among these different phases, galvanic corrosion occurred in Fe matrix. In addition, a small amount of Mn distributed at grain boundaries also contributed to the formation of galvanic corrosion. Thus, the corrosion rate increased from 0.09 ± 0.02 mm/year to 0.23 ± 0.05 mm/year. The scaffold exhibited suitable mechanical properties with a yield strength of 137 ± 8.4 MPa, an ultimate strength of 221.7 ± 10.9 MPa. Moreover, cell assays demonstrated its good cytocompatibility. Taking these positive results into consideration, SLM processed Fe-Mn scaffold was a promising material for bone repair application.
Effects of pressure and substrate temperature on the growth of Al-doped ZnO films by pulsed laser deposition
Authors: Kek Reeson , Tan Kwan-Chu , Nee Chen Hon , Yap Seong Ling , Koh Song Foo , Arof Abdul Kariem Bin Hj Mohd , Tou Teck Yong , Yap Seong Shan 
Published: December 2019

Abstract
Al-doped ZnO (AZO) thin films were deposited on p-Si (100) by pulsed laser deposition from a composite ceramic target (ZnO:Al2O3) by using 355 nm laser at different O2 background pressure and substrate temperature. Upon ablation at laser fluence of 2 Jcm−2, plasma plume consists of Zn neutrals and ions, Al neutrals and O neutral are formed. As the O2 background pressure increases from 3 Pa to 26 Pa, the energy of the plasma species are moderated. The results show that the ions density and velocity reduced significantly above 13 Pa. The velocity of the ions reduced from 14 kms−1 to 11 kms−1 at 13 Pa, while the ions energy reduced from 63 eV to 42 eV respectively. Below 13 Pa, crystalline and homogeneous AZO nanostructured films were formed. Above 13 Pa, the process results in low crystallinity films with higher porosity. The resistivity of the films also increases from 0.1 ohmcm to 24 ohmcm as the pressure increased. At fixed O2 background pressure of 3 Pa, the adatom mobility of atoms on the substrates is altered by substrate heating. The resistivity of the films decreased to 10–3 ohmcm when the substrates are heated to 100 °C–300 °C during deposition. The films with highest carrier density of 1020 cm−3 and carrier mobility of 13 cmV−1 s−1 are achieved at 200 °C.
Theoretical investigation of electronic bandgaps of semiconducting single-walled carbon nanotubes using semi-empirical self-consistent tight binding and ab-inito density functional methods
Authors: Niranjan Manish K 
Published: December 2019

Abstract
We perform a comprehensive theoretical study of electronic band gaps of semiconducting single-walled carbon nanotubes (SWNTs) with different sets of chiral indices using semi-empirical tight binding and density functional (DFT) based ab-initio methods. In particular, self-consistent extended Huckel (EH-SCF) and self-consistent Slater Koster (SK-SCF) tight binding models are used as semi-empirical methods, whereas the DFT based LDA-1/2 and Tran-Blaha (TB09) meta-GGA schemes are used as ab-initio methods. The calculations are performed for 1) (n, m) chiral SWNTs for which experimental optical gaps have been reported 2) (9, 0), (12, 0) and (15, 0) ‘metallic’ zigzag SWNTs for which small bad gaps have been reported 3) Pairs of SWNTs having same diameters but different chiral angles 4) (n, 0) zigzag SWNTs with

10
≤
n
≤
30
.

From the comparison of bands gaps of tubes with same diameter, the electronic band gaps are found to vary with chiral angles with opposing trend as compared to that reported for experimental optical band gaps. This result may be expected to have important implications for self-energy corrections and/or exciton binding energies and their dependence on chiral angles. The hopping parameter

γ

0

obtained from fitting EH-SCF and SK-SCF bandgap data, is found to be in good agreement with that obtained from fitting experimental data. In general, the band gap values of SWNTs computed using semi-empirical EH-SCF and SK-SCF methods are quite close (within ∼ 5%) to those computed using DFT-based LDA-1/2 and TB09 meta-GGA methods. The results suggest that self-consistent semi-empirical methods can be expected to provide similar accuracy in results as that expected from more computationally challenging ab-intio DFT based LDA-1/2 and TB09 meta-GGA methods.
Low-power-consumption organic field-effect transistors
Authors: Duan Yiwei , Zhang Bowen , Zou Shizan , Fang Chuqi , Wang Qijing , Shi Yi , Li Yun 
Published: December 2019

Abstract
At present, the electrical performance of organic field-effect transistors (OFETs) has reached the level of commercial amorphous silicon. OFETs show considerable application potential in artificial intelligence, deep learning algorithms, and artificial skin sensors. The devices which can operate with high performance and low power consumption are needed for these applications. The recent energy-related improvement to realize low-power consumption OFETs were reviewed, including minimizing operating voltage, reducing subthreshold swing, and decreasing contact resistance. In this review, we demonstrate breakthroughs in materials and methods to decrease power consumption, providing a promising avenue toward low-power consumption organic electronics.
Why do older workers with chronic health conditions prefer to retire early?
Authors: Vanajan Anushiya , Bültmann Ute , Henkens Kène 
Published: December 2019

Abstract

Background
older workers experiencing chronic health conditions (CHCs) are more likely to retire early. The different pathways through which CHCs stimulate retirement preferences, however, remain largely unexplored.

Objective
we present a more comprehensive model in which we test the different pathways through which four specific CHCs—arthritis, cardiovascular disease, sleep disorders and psychological disorders—influence early retirement preferences. We hypothesize that the association between CHCs and early retirement preferences is differentially mediated by subjective life expectancy (SLE), perceived health-related work limitations (HRWL) and vitality.

Methods
we collected data from 5,696 wage-employed older workers (60 to 64 years) in the Netherlands in 2015. Regression models were estimated to examine the associations between CHCs and early retirement preferences. Mediation analysis with the Karlson, Holm and Breen method was used to examine potential mediation pathways.

Results
SLE, HRWL and vitality mediated the association between CHCs and older workers’ early retirement preferences. The dominant mediator differed depending on the CHC. Severe HRWL predominantly guided the retirement preferences of older workers with arthritis and cardiovascular disease. Lower vitality mainly mediated retirement preferences of older workers with sleep and psychological disorders. Lower SLE was a significant mediation pathway for older workers with cardiovascular diseases.

Conclusions
HRWL and vitality play a major role in determining retirement preferences of older workers experiencing CHCs. Since both mediators are modifiable, targeted interventions may not only extend older workers’ working lives, but also improve the quality of their working lives.
Latitudinal variation in seed predation correlates with latitudinal variation in seed defensive and nutritional traits in a widespread oak species
Authors: Moreira Xoaquín , Abdala-Roberts Luis , Bruun Hans Henrik , Covelo Felisa , De Frenne Pieter , Galmán Andrea , Gaytán Álvaro , Jaatinen Raimo , Pulkkinen Pertti , Ten Hoopen Jan P J G , Timmermans Bart G H , Tack Ayco J M , Castagneyrol Bastien 
Published: December 2019

AbstractBackground and AimsClassic theory on geographical gradients in plant–herbivore interactions assumes that herbivore pressure and plant defences increase towards warmer and more stable climates found at lower latitudes. However, the generality of these expectations has been recently called into question by conflicting empirical evidence. One possible explanation for this ambiguity is that most studies have reported on patterns of either herbivory or plant defences whereas few have measured both, thus preventing a full understanding of the implications of observed patterns for plant–herbivore interactions. In addition, studies have typically not measured climatic factors affecting plant–herbivore interactions, despite their expected influence on plant and herbivore traits.MethodsHere we tested for latitudinal variation in insect seed predation and seed traits putatively associated with insect attack across 36 Quercus robur populations distributed along a 20° latitudinal gradient. We then further investigated the associations between climatic factors, seed traits and seed predation to test for climate-based mechanisms of latitudinal variation in seed predation.Key ResultsWe found strong but contrasting latitudinal clines in seed predation and seed traits, whereby seed predation increased whereas seed phenolics and phosphorus decreased towards lower latitudes. We also found a strong direct association between temperature and seed predation, with the latter increasing towards warmer climates. In addition, temperature was negatively associated with seed traits, with populations at warmer sites having lower levels of total phenolics and phosphorus. In turn, these negative associations between temperature and seed traits led to a positive indirect association between temperature and seed predation.ConclusionsThese results help unravel how plant–herbivore interactions play out along latitudinal gradients and expose the role of climate in driving these outcomes through its dual effects on plant defences and herbivores. Accordingly, this emphasizes the need to account for abiotic variation while testing concurrently for latitudinal variation in plant traits and herbivore pressure.
iMIRAGE: an R package to impute microRNA expression using protein-coding genes
Authors: Nath Aritro , Chang Jeremy , Huang R Stephanie 
Published: December 2019

Abstract

Summary
MicroRNAs (miRNAs) are critical post-transcriptional regulators of gene expression. Due to challenges in accurate profiling of small RNAs, a vast majority of public transcriptome datasets lack reliable miRNA profiles. However, the biological consequence of miRNA activity in the form of altered protein-coding gene (PCG) expression can be captured using machine-learning algorithms. Here, we present iMIRAGE (imputed miRNA activity from gene expression), a convenient tool to predict miRNA expression using PCG expression of the test datasets. The iMIRAGE package provides an integrated workflow for normalization and transformation of miRNA and PCG expression data, along with the option to utilize predicted miRNA targets to impute miRNA activity from independent test PCG datasets.

Availability and implementation
The iMIRAGE package for R, along with package documentation and vignette, is available at https://aritronath.github.io/iMIRAGE/index.html.

Supplementary information
Supplementary data are available at Bioinformatics online.