bluuebunny/crossref_metadata_2025 huggingface dataset:
Magnesium-alloy rods reinforced bioglass bone cement composite scaffolds with cortical bone-matching mechanical properties and excellent osteoconductivity for load-bearing bone in vivo regeneration
Authors: Duan Huyang , Cao Chuanliang , Wang Xiaolei , Tao Jun , Li Chen , Xin Hongbo , Yang Jing , Song Yulin , Ai Fanrong
Published: October 2020

Various therapeutic platforms have been developed for repairing bone defects. However, scaffolds possess both cortical bone-matching mechanical properties and excellent osteoconductivity for load-bearing bone defects repair is still challenging in the clinic. In this study, inspired by the structure of the ferroconcrete, a high-strength bifunctional scaffold has been developed by combining surface-modified magnesium alloy as the internal load-bearing skeleton and bioglass-magnesium phosphate bone cement as the osteoconductive matrix. The scaffold combines the high mechanical strength and controllable biodegradability of surface-modified magnesium alloy with the excellent biocompatibility and osteoconductivity of bioglass-magnesium phosphate bone cement, thus providing support for load-bearing bone defects and subsequently bone regeneration. The scaffolds generate hydroxyapatite (HA) during the degrading in simulated body fluid (SBF), with the strength of the scaffold decreasing from 180 to 100 MPa in 6 weeks, which is still sufficient for load-bearing bone. Moreover, the scaffolds showed excellent osteoconductivity in vitro and in vivo. In a New Zealand White Rabbit radius defect model, the scaffolds degrade gradually and are replaced by highly matured new bone tissues, as assessed by image-based analyses (X-ray and Micro-CT) and histological analyses. The bone formation-related proteins such as BMP2, COL1a1 and OCN, all showed increased expression.
Effects of exercise on kidney and physical function in patients with non-dialysis chronic kidney disease: a systematic review and meta-analysis
Authors: Nakamura Keisuke , Sasaki Tomohiro , Yamamoto Shuhei , Hayashi Hiroto , Ako Shinji , Tanaka Yuu
Published: October 2020

Patients with non-dialysis chronic kidney disease (CKD) are at greater risk of early mortality and decreased physical function with an advance in the stage of CKD. However, the effect of exercise in these patients is unclear. This meta-analysis aimed to determine the effects of physical exercise training on the risk of mortality, kidney and physical functions, and adverse events in patients with non-dialysis CKD. The meta-analysis conformed to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) statement and the Cochrane Handbook recommendations. On 16 August 2019, the PubMed, CINAHL, Cochrane Library databases, and Embase were electronically searched, with no restrictions for date/time, language, document type, or publication status, for eligible randomized controlled trials (RCTs) investigating the effects of exercise on mortality and kidney and physical function in patients with non-dialysis CKD. Eighteen trials (28 records), including 848 patients, were analyzed. The effects of exercise on all-cause mortality and estimated glomerular filtration rate were not significantly different from that of usual care. Exercise training improved peak/maximum oxygen consumption compared to usual care. Regular exercise improves physical and walking capacity for patients with non-dialysis CKD. Effect on leg muscle strength was unclear.
Author Correction: Photodetection Characteristics of Gold Coated AFM Tips and n-Silicon Substrate nano-Schottky Interfaces
Authors: Abbas Yawar , Rezk Ayman , Alkindi Fatmah , Saadat Irfan , Nayfeh Ammar , Rezeq Moh’d
Published: October 2020

An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Development of an electrochemical sensor based on carbon black for the detection of cannabidiol in vegetable extracts
Authors: Cirrincione Marco , Zanfrognini Barbara , Pigani Laura , Protti Michele , Mercolini Laura , Zanardi Chiara
Published: October 2020

A glassy carbon electrode chemically modified with a carbon black coating is proposed here for the rapid and portable determination of cannabidiol (CBD) in a commercial Cannabis seed oil and in fibre-type Cannabis sativa L. leaves.
Chiral porous organic frameworks and their application in enantioseparation
Authors: Zhang Ying , Jin Xiaoning , Ma Xiaofei , Wang Yong
Published: October 2020

The application of CMOFs and CCOFs as CSPs for chromatographic chiral separation.
Combining bacteriophage engineering and linear dichroism spectroscopy to produce a DNA hybridisation assay
Authors: Ali Aysha , Little Haydn A. , Carter Jake G. , Douglas Craig , Hicks Matthew R. , Kenyon David M. , Lacomme Christophe , Logan Richard T. , Dafforn Timothy R. , Tucker James H. R.
Published: October 2020

A novel DNA sensing method based on LD spectroscopy and using bionanoparticle scaffolds is described, as demonstrated by the rapid detection of DNA strands associated with bacterial and viral pathogens.
All-nanoparticle layer-by-layer coatings for Mid-IR on-chip gas sensing
Authors: Al Husseini Diana , Zhou Junchao , Willhelm Daniel , Hastings Trevor , Day Gregory S. , Zhou Hong-Cai , Coté Gerard L. , Qian Xiaofeng , Gutierrez-Osuna Ricardo , Lin Pao Tai , Sukhishvili Svetlana A.
Published: October 2020

Functionalization of optical waveguides with submicron all-nanoparticle coatings significantly enhanced the detection of acetone. Such coatings were enabled via precise control of the substrate withdrawal speed using the layer-by-layer deposition.
Strong upconverting and downshifting emission of Mn2+ ions in a Yb,Tm:NaYF4@NaLuF4/Mn:CsPbCl3 core/shell heterostructure towards dual-model anti-counterfeiting
Authors: Zhao Jun , Pan Gencai , Xu Wen , Jin Suyue , Zhang Huafang , Gao Huiping , Kang Miao , Mao Yanli
Published: October 2020

A Yb,Tm:NaYF4@NaLuF4/Mn:CsPbCl3 quasi-core/shell heterostructure is synthesized with the assistance of silica. The strong upconverting and downshifting emission of Mn2+ ions was observed in the nanocomposite with a quasi-core/shell structure.
Versatile design of metal–organic framework cathode for Li–O2 and Li–O2/CO2 batteries
Authors: Pham Hien Thi Thu , Choi Youngbin , Park Min-Sik , Lee Jong-Won
Published: October 2020

In this study, we propose a versatile design for metal–organic framework cathodes with the aim of improving the reversibility of Li–O2 and Li–O2/CO2 batteries.
Generalized reactivity descriptor of defective carbon catalysts for acetylene hydrochlorination: the ratio of sp2 : sp3 hybridization
Authors: Qiu Yiyang , Fan Dong , Lan Guojun , Wei Shuhao , Hu Xiaojun , Li Ying
Published: October 2020

Surface engineering of sp2 and sp3 oriented carbons with optimized hybridization configuration makes excellent metal free catalysts for acetylene hydrochlorination
Single crystal growth of GdB6 by the optical floating-zone technique
Authors: Ning Shu-yu , Yang Xinyu , Wang Yan , Zhu Zhongwen , Zhang Jiuxing
Published: October 2020

A high-quality and large-sized GdB6 single crystal was successfully prepared by using the optical floating zone method to accurately control the temperature and composition of the molten zone.
Band gap and magnetic engineering of penta-graphene via adsorption of small transition clusters
Authors: Chen Jia , Cui Hong , Wang Peng , Zheng Yanfei , Wang Dandan , Chen Hong , Yuan Hongkuan
Published: October 2020

Deposition of transition metal clusters on penta-graphene can not only change the band-gap but also introduce large magnetic moments and magnetic anisotropy.
A thermodynamic and kinetic study of the catalytic performance of Fe, Mo, Rh and Ru for the electrochemical nitrogen reduction reaction
Authors: Shi Jun-Lin , Xiang Shi-Qin , Zhang Wei , Zhao Liu-Bin
Published: October 2020

Potential energy curves of Fe(110) and Rh(111) at the corresponding equilibrium electrodes.
Manipulating twisted electrons in strong-field ionization
Authors: Maxwell A. S. , Armstrong G. S. J. , Ciappina M. F. , Pisanty E. , Kang Y. , Brown A. C. , Lewenstein M. , Figueira de Morisson Faria C.
Published: October 2020

We investigate the orbital angular momentum (OAM) of photoelectrons freed in strong-field ionization. We use this to provide an explanation for interference vortices and discuss utilizing the OAM in time-resolved imaging of photo-induced dynamics.
Synthesis of solvent-free acrylic pressure-sensitive adhesivesviavisible-light-driven photocatalytic radical polymerization without additives
Authors: Back Jong-Ho , Kwon Yonghwan , Roldao Juan Carlos , Yu Youngchang , Kim Hyun-Joong , Gierschner Johannes , Lee Wonjoo , Kwon Min Sang
Published: October 2020

Solvent-free acrylic pressure-sensitive adhesives were preparedviavisible-light driven photocatalytic free radical polymerization. Combined experiments and quantum calculations divulged the origin of the enhanced rate of polymerisation in the presence ofN-vinyl monomers.
Solution-processed electronics for artificial synapses
Authors: Lu Kuakua , Li Xiaomeng , Sun Qingqing , Pang Xinchang , Chen Jinzhou , Minari Takeo , Liu Xuying , Song Yanlin
Published: October 2020

Solution-processed artificial synapses are expected to develop the synaptic electronics towards flexible and highly integrated three-dimensional neural networks to break through the von Neumann computing architecture in the post-Moore era.
Peroxidase-like activity of Fe3O4@fatty acid-nanoparticles and their application for the detection of uric acid
Authors: Wen Jiaqi , Yun Zhou , Zhili Cheng , Yang Yaling
Published: October 2020

Schematic diagram of colorimetric uric acid sensor by utilizing uricase and Fe3O4@C7catalyzed TMB oxidation.
Large-area 2D PtTe2/silicon vertical-junction devices with ultrafast and high-sensitivity photodetection and photovoltaic enhancement by integrating water droplets
Authors: Shawkat Mashiyat Sumaiya , Chowdhury Tanvir Ahmed , Chung Hee-Suk , Sattar Shahid , Ko Tae-Jun , Larsson J. Andreas , Jung Yeonwoong
Published: October 2020

Novel photodetectors based on large-area 2D PtTe2/silicon vertical-junctions exhibit ultra-fast photo-response, high sensitivity, and water-droplet driven photovoltaic enhancement.
Drawing WS2 thermal sensors on paper substrates
Authors: Lee Martin , Mazaheri Ali , van der Zant Herre S. J. , Frisenda Riccardo , Castellanos-Gomez Andres
Published: October 2020

Paper based thermoresistive sensors are fabricated by rubbing WS2 powder against a piece of standard copier paper, like the way a pencil is used to write on paper.
Interfacial hybridization of Janus MoSSe and BX (X = P, As) monolayers for ultrathin excitonic solar cells, nanopiezotronics and low-power memory devices
Authors: Mohanta Manish Kumar , De Sarkar Abir
Published: October 2020

Interfacial physics and application prospects of MoSSe monolayer is explored upon combining it with a boron pnictide (BP, BAs) monolayer in a van der Waals heterostructure (vdWH) setup.
Reversible deactivation radical (co)polymerization of dimethyl methylene oxazolidinone towards responsive vicinal aminoalcohol-containing copolymers
Authors: Wang Zhuoqun , Detrembleur Christophe , Debuigne Antoine
Published: October 2020

Well-defined oxazolidinone-containing copolymers produced by controlled radical polymerization give access to multi-responsive vicinal amino-alcohol functional poly(vinyl alcohol)s.
High crystallinity Sn crystals on Ni foam: an ideal bimetallic catalyst for the electroreduction of carbon dioxide to syngas
Authors: Zhao Ying , Su Dongyue , Dong Wentao , Xu Xiaoyang , Zhang Xiangjing , Hu Yongqi
Published: October 2020

An ideal bimetallic catalyst electrode material was developed by electrodeposition of Sn on Ni foam substrate (Sn@f-Ni) in aqueous solution and used as a cathode for electrochemical reduction of CO2 to produce syngas (H2 and CO).
One-step conversion of tannic acid-modified ZIF-67 into oxygen defect hollow Co3O4/nitrogen-doped carbon for efficient electrocatalytic oxygen evolution
Authors: Wang Changshui , Zhang Jiahui , Zhang Zenong , Ren Guancheng , Cai Dandan
Published: October 2020

Oxygen defect hollow Co3O4/nitrogen-doped carbon (OV-HCo3O4@NC) nanocomposites were successfully synthesized by simple one-step pyrolysis of tannic acid-modified ZIF-67 (TAMZIF-67). OV-HCo3O4@NC shows good OER electrocatalytic activity and stability.
Nanostructured copper molybdates as promising bifunctional electrocatalysts for overall water splitting and CO2reduction
Authors: Rahmani Atefeh , Farsi Hossein
Published: October 2020

Comparing overall water splitting on the surface two types of copper molybdate.
The sensitive detection of methylene blue using silver nanodecahedra prepared through a photochemical route
Authors: Vu Xuan Hoa , Dien Nguyen Dac , Ha Pham Thi Thu , Trang Tran Thu , Ca N. X. , Tho P. T. , Vinh Nguyen Dinh , Van Do Phan
Published: October 2020

In this work, we have carried out systematic studies on the critical role of polyvinyl pyrrolidone (PVP) and citrate in the well-known chemical reduction route to synthesize silver nanodecahedra (AgND).
Hexa-peri-benzocoronene with two extra K-regions in anortho-configuration
Authors: Dumslaff Tim , Gu Yanwei , Paternò Giuseppe M. , Qiu Zijie , Maghsoumi Ali , Tommasini Matteo , Feng Xinliang , Scotognella Francesco , Narita Akimitsu , Müllen Klaus
Published: October 2020

We reported the synthesis of hexa-peri-benzocoronene (HBC) with two extra K-regions adopting anortho-configuration. The systematical study provides deep insights about the effect of zigzag edge on the π-conjugated pathway and molecular design.
Near-infrared fluorescent probes: a next-generation tool for protein-labeling applications
Authors: Reja Shahi Imam , Minoshima Masafumi , Hori Yuichiro , Kikuchi Kazuya
Published: October 2020

This minireview describes the development of NIR chemical probes for various protein-tag systems.
The preparation of waste biomass-derived N-doped carbons and their application in acid gas removal: focus on N functional groups
Authors: Li Dan , Chen Wenhua , Wu Jianping , Jia Charles Qiang , Jiang Xia
Published: October 2020

N-doped biochars (NPCs) derived from waste biomass are promising materials for the removal of acid gases, while waste biomass is a cheap and sustainable resource.
Crystal structure of Leptospira leucine-rich repeat 20 reveals a novel E-cadherin binding protein to induce NGAL expression in HK2 cells
Authors: Hsu Shen-Hsing , Chu Chen-Hsi , Tian Ya-Chung , Chang Ming-Yang , Chou Li-Feng , Sun Yuh-Ju , Yang Chih-Wei
Published: October 2020

Leptospirosis is the most common zoonotic disease caused by pathogenic Leptospira, which is classified into three groups according to virulence. Its pathogenic and intermediate species contain leucine-rich repeat (LRR) proteins that are rarely expressed in non-pathogenic strains. In this study, we presented the crystal structure of LSS_11580 (rLRR20) from pathogenic L. santarosai serovar Shermani. X-ray diffraction at a resolution of 1.99 Å revealed a horseshoe-shaped structure containing seven α-helices and five β-sheets. Affinity assays indicated that rLRR20 interacts with E-cadherin on the cell surface. Interestingly, its binds to the extracellular (EC) 1 domain in human epithelial (E)-cadherin, which is responsible for binding to another E-cadherin molecule in neighboring cells. Several charged residues on the concave face of LRR20 were predicted to interact with EC1 domain. In the affinity assays, these charged residues were replaced by alanine, and their affinities to E-cadherin were measured. Three vital residues and mutation variants of LRR20, namely D56A, E59A, and E123A, demonstrated significantly reduced affinity to E-cadherin compared with the control. Besides, we also demonstrated that rLRR20 induced the expression of neutrophil gelatinase-associated lipocalin (NGAL) in HK2 cells. The low ability of the three mutation variants to induce NGAL expression further demonstrates this induction. The present findings indicate that LRR20 from pathogenic Leptospira binds to E-cadherin and interacts with its EC1 domain. In addition, its induction of NGAL expression in HK2 cells is associated with acute kidney injury in human.
The biophysical basis of receptor tyrosine kinase ligand functional selectivity: Trk-B case study
Authors: Ahmed Fozia , Paul Michael D. , Hristova Kalina
Published: October 2020

Tropomyosin receptor kinase B (Trk-B) belongs to the second largest family of membrane receptors, Receptor Tyrosine Kinases (RTKs). Trk-B is known to interact with three different neurotrophins: Brain-Derived Neurotrophic Factor (BDNF), Neurotrophin-4 (NT-4), and Neurotrophin-3 (NT-3). All three neurotrophins are involved in survival and proliferation of neuronal cells, but each induces distinct signaling through Trk-B. We hypothesize that the different biological effects correlate with differences in the interactions between the Trk-B receptors, when bound to different ligands, in the plasma membrane. To test this hypothesis, we use quantitative FRET to characterize Trk-B dimerization in response to NT-3 and NT-4 in live cells, and compare it to the previously published data for Trk-B in the absence and presence of BDNF. Our study reveals that the distinct Trk-B signaling outcomes are underpinned by both different configurations and different stabilities of the three ligand-bound Trk-B dimers in the plasma membrane.
Image sensor for spectral‐domain optical coherence tomography on a chip
Authors: Vlaskovic M. , Zimmermann H. , Meinhardt G. , Kraft J.
Published: October 2020

This Letter presents a global shutter image sensor based on PIN photodiodes intended to be used for optical coherence tomography (OCT) in the spectral domain, where the light is brought to the photodiodes via optical waveguides monolithically integrated on top of electronics in a photonic layer. Photodiodes are optimised to have the peak responsivity in the wavelength range between 800 and 900 nm, while the main features of electronics are high signal‐to‐noise ratio, high frame rate, low‐power consumption and low noise. The sensor is designed using 0.35 µm high voltage CMOS and employing low doped epitaxial starting material in order to improve the detector efficiency by enabling fully depleted photodiodes and lowering the crosstalk. Image sensor parameters are obtained using the photon‐transfer curve method and compared with commercial cameras for OCT.
Topside radio frequency system consolidation with Gregorian parabolic antenna stacking
Authors: Sugama C. , Chandrasekar V.
Published: October 2020

Shipboard platforms have numerous antennas crowding topside space. Consolidating these antennas would require having antennas with multi‐frequency capabilities. A Gregorian parabolic stacked antenna provides multi‐frequency capabilities on a single pedestal which reduces the number of antennas required on a US Navy shipboard platforms. This Letter depicts the simulated design and radiation pattern results of a 1.9 m Gregorian parabolic stacked antenna that is capable of operating at the X‐, K‐, Ka‐ and Q‐band frequencies at VSWR values <2:1. These frequency band capabilities allow for satellite communication links where two antennas that are currently fielded are operating within. The dual Gregorian parabolic stacked antenna presented is capable of operating at the same frequencies on a single antenna pedestal which would reduce the number of antennas required on shipboard platforms.
Emotion recognition with deep learning using GAMEEMO data set
Authors: Alakus T. B. , Turkoglu I.
Published: October 2020

Emotion recognition is actively used in brain–computer interface, health care, security, e‐commerce, education and entertainment applications to increase and control human–machine interaction. Therefore, emotions affect people's lives and decision‐making mechanisms throughout their lives. However, the fact that emotions vary from person to person, being an abstract concept and being dependent on internal and external factors makes the studies in this field difficult. In recent years, studies based on electroencephalography (EEG) signals, which perform emotion analysis in a more robust and reliable way, have gained momentum. In this article, emotion analysis based on EEG signals was performed to predict positive and negative emotions. The study consists of four parts. In the first part, EEG signals were obtained from the GAMEEMO data set. In the second stage, the spectral entropy values of the EEG signals of all channels were calculated and these values were classified by the bidirectional long‐short term memory architecture in the third stage. In the last stage, the performance of the deep‐learning architecture was evaluated with accuracy, sensitivity, specificity and receiver operating characteristic (ROC) curve. With the proposed method, an accuracy of 76.91% and a ROC value of 90% were obtained.
Urban resilience to floods in parts of Makassar, Indonesia
Authors: Thoban Meydelin Isani , Hizbaron Dyah Rahmawati
Published: October 2020

Makassar – the largest and fastest growing area in eastern Indonesia – experienced significant number of damages and losses due to recurrent floods. In early 2019, the flood disaster exposed the urbanized area and inundated 1,658 houses and caused 9,328 impacted population. These figures imply that Makassar needs to create concerted efforts to improve its currently low resilience to floods. This study was designed to assess the urban resilience to floods in Makassar to provide the government with reference for evaluation and identify the most contributing factors to the resilience. In this context, resilience was assessed in four urban systems, namely physical, social, economic, and institutional, in every unit of analysis, i.e., flood-affected districts. The research data included building density, green open space, population density, the number of economically disadvantaged households, community’s subsistence funds, and the availability of early warning systems and disaster emergency stations. The physical, social, economic, institutional, and equal scenarios of resilience were modeled using the Spatial Multi-Criteria Evaluation (SMCE). The results showed that the districts in Makassar were moderately resilient to floods and that the resilience of each urban system shaped the overall resilience. Tamalate and Rappocini sub districts had the lowest resilience values, whereas Manggala was estimated as the most highly resilient district in several scenarios.
Control of aquifer weathering degree to the groundwater chemical composition in Wates Coastal Aquifer, Yogyakarta, Indonesia
Authors: Hendrayana Heru , Thin Phyu Phyu , Wilopo Wahyu , Kawasaki Satoru
Published: October 2020

The studied coastal aquifer has been encountered a complex hydrochemical evolution. Interesting aspect is the occurrence of groundwater facies with different water chemistries in close proximity to each other. Water salinity is reported from local parts away from shore. This research was conducted for assessment of aquifer weathering and its control on groundwater chemistry. An investigation of major ions in 27 water samples was performed with geostatistics, graphical method, mineral saturation index and mass balance transport to identify the groundwater evolution. Geochemical analysis of sediments was made of 8 samples, to estimate the weathering degree using chemical index of alteration and chemical index of weathering. Silicate dissolution was promoted by low weathering, which was reflected in low ions dominated by calcium and bicarbonate in fresh water. It leaded to fine sands. Silts were dominant under moderate weathering. Sodium and calcium were higher than fresh water. Bicarbonate was still highest concentration. Main water was the mixed type which was indicated by moderate ions. Clays were formed by high weathering. Water salinity with highest dissolved solids was caused by halite dissolution and calcium adsorption on clays. Overall, groundwater chemistry in the study area is locally characterized by prevailing lithology in grouping patterns.
Estimated rate of karst aquifer development by MRC analysis and flood hydrograph components at Guntur Springs, Gunungsewu Karst Area, Indonesia
Authors: Naufal Muhammad , Nugroho Adji Tjahyo , Cahyadi Ahmad , Haryono Eko , Widyastuti Margaretha , Agus Riyanto Indra , Ramadhan Fajri
Published: October 2020

Understanding the stage of karst aquifer development (karstification) is of vital importance because this parameter can reflect the character of flow system release, from which relevant management patterns are derived. Master Recession Curve (MRC) construction is considered ideal for identifying at which stage karstification works because MRC relies on recession curves as its primary input. Recession curves are the most stable component of flow hydrographs in representing aquifer characteristics. The study focused on springs located in a karst hydrogeological subsystem, namely, Guntur Spring in the Panggang Hydrogeological Subsystem (Gunungsewu Karst Area). It was designed to determine (1) the flow characteristics and (2) the degree of karst aquifer development at Guntur Spring. It utilized a one-year flow hydrograph with a 30-minute logging interval as the main data. The flood hydrograph showed that a fissure system dominated the flow characteristics. Moreover, the MRC construction results indicated that the karstification level at Guntur Spring was 5.0, confirming the dominant fissure system and also signs of the recent development of conduit flows.
Exposure and loss assessment of soil liquefaction in coastal area of Kulon Progo, Indonesia
Authors: Rizki Ghiffari , Rini Rachmawati , Raden Rijanta
Published: October 2020

Soil Liquefaction is a phenomenon of loss of strength of the granural soil layers due to increased pore water stress caused by earthquake shocks. Soil liquefaction can cause material and life damage if occurs in the developed area. Kulon Progo Regency based on the Atlas of Liquefaction Susceptibility Zones in 2019, has high susceptibility zones, which has the potential for flow liquefaction, lateral spreading, vertical displacement, and sand boil. This study aims to assess the exposure and loss index in liquefaction hazard zone based on the characteristics of land use and social demographic. The exposure index is obtained from overlaying between susceptibility map and liquefaction exposure variables, when the loss assessment is done by simulating the losses in several earthquake moment magnitude scenarios. Study results show that high exposure surrounding the residential zone in the south of the Wates Urban Area and the construction location of the Yogyakarta International Airport. There are settlement areas potentially affected by lateral spreading in Glagah, Karangwuni, Banaran, and Karangsewu Villages. While the results of the loss assessment show that transport infrastructure and residential buildings are the most affected objects when liquefaction phenomena occur due to the earthquake. Managing the expansion of settlement area through zoning regulation and technical engineering approach is needed to reduce losses due to future liquefaction phenomenon.
Groundwater vulnerability assessment to pollution in Kasihan, Bantul Regency: A comparative method study (GOD, SINTACS and DRASTIC)
Authors: Purnama Ignasius Loyola Setyawan , Primacintya Vincentia Anindha
Published: October 2020

Groundwater vulnerability to pollution refers to the ease with which pollutants reach groundwater, in other words indicating the level of ease of an area to experience pollution. At present, the theme is one of the themes that attracts many researchers because pollution is more frequent in an area. The purpose of this study is to assess groundwater vulnerability in the study area for pollution using the GOD method and conduct a study of 3 groundwater vulnerability assessments, to determine the most appropriate assessment to be applied in the study area. The method used to determine groundwater vulnerability to pollution is GOD, which uses three parameters to assess the vulnerability of groundwater, namely aquifer type, rock type above aquifer and groundwater level. Furthermore, the results of the vulnerability assessment using the GOD method are compared with the vulnerability assessment according to the SINTACS and DRASTIC methods that have been carried out before in this area. The results showed that the variation of groundwater vulnerability index values in the study area according to the GOD method was from 0.35 to 0.63. Locations that are classified as medium vulnerability are generally located in the limestone Sentolo Formation, while locations that are classified as high vulnerability class are located in the volcanic rock of Yogyakarta Formation. Noting the results of determining groundwater vulnerability from the three methods, it can be said that the three methods are suitable for assessing groundwater vulnerability in the study area. However, looking at the distribution pattern of the level of pollution, the DRASTIC method can provide more detailed results related to the level of vulnerability.
Hummocky terrain of the Kalibabak debris avalanche deposit, Lombok Island, Indonesia
Authors: Malawani Mukhamad N , Lavigne Franck , Hadmoko Danang S , Marfai Muh Aris , Mutaqin Bachtiar W
Published: October 2020

The debris avalanche deposit (DAD) coverage can drastically modify the surrounding landscape of volcanoes. DAD can be distinguished by hummocky irregular surface, jigsaw fissure, and mixing horse-shoe shape. Due to its particular shape of a hummock, the topography can be easily identified using DEM (Digital Elevation Model) and satellite imagery. The aim of this study is to characterize hummocky terrain in Lombok Island, which is located in the Kalibabak formation on the Geological map through the geomorphic approach. Hummocky terrain in this study are analyzed using DEM data from DEMNAS (DEM Nasional: 0.27-arcsecond resolution). Our study of this DAD encompasses seven variables, namely H/L ratio, numbers hummocks, distance to source, slope, area (size), relative height, topographic section, and hummock-spreading shape. A minimum of 756 hills derived from this DEM are considered as hummocks from this DAD, which extends ~18 km (NS) and ~25 km (WE) in the central part of Lombok Island. With an area of ~200 km2 and a volume estimated around 8.8 km3, the Kalibabak DAD is more than three times larger than the one of the Mount St-Helens in 1980. The morphology of hummocky terrain is bounded by a sudden change of slope, which is indicated by a river confluence. Average hummock size is 2.7 ha and average distance between each hummock is 150 m to 300 m. The hummocks are characterized by steep slopes (25 % to 45 %) at the boundary to colluvium plain (debris deposit), which makes them easy to identify using DEM. Hummocks spreading distribution forms a conical-like shape with a H/L ratio of 0.13. The spreading distribution shape, the H/L and V/L ratios are useful as an input for reconstructing the mechanism of debris avalanche emplacement.
Integrated groundwater resource management in the peri-urban area of Banguntapan, Bantul
Authors: Purnama Ignasius Loyola Setyawan , Salamah Sekar Dinul , Wandari Kartika Ayu , Primacintya Vincentia Anindha
Published: October 2020

Banguntapan District in Bantul Regency is one of the peri-urban areas in the Special Region of Yogyakarta. The peri-urban area is an area located between the urban (Jogja City) and the rural (Bantul Regency). As a result of this strategic location, the development of this district is very rapidly marked by the growth of settlements, which in turn further requires water for housing purposes.The purpose of this research is to formulate an integrated water resources management model in the study area. To achieve this goal dynamic modeling is used. The model obtained was then simulated using the Powersim 2.5c computer program. Management efforts that can be carried out in this district are reducing groundwater use through saving water use and increasing water use from local water companies. Simulation results show that the combination of these two methods will slow down the time the safe yield will be exceeded, from 2039 to 2049.
Relationship analysis of vegetation structural properties and the aboveground carbon stock of mangrove forest
Authors: Purnamasari Eva , Kamal Muhammad , Wicaksono Pramaditya
Published: October 2020

Mangrove forests have important ecological functions as a controller of environmental quality in coastal areas and absorber of atmospheric carbon. The mangrove ecosystem has a unique vegetation structure which form vegetation zonation that consists of different forest stands characteristics and tree species. This study aims to analyze the relationship between vegetation structural properties and the estimated aboveground carbon (AGC) stock of mangrove forest in Bedul mangrove, Banyuwangi, East Java, Indonesia. The study was conducted by field observation at some purposively selected sample locations. Field measurement was aimed to collect data about mangrove tree diameter at breast height (DBH), species, tree height, and fractional canopy cover. Mangrove biomass was indirectly calculated by allometric method based on mangrove species to estimate AGC in mangrove stands. The highest total AGC found in this study was 114.09 tons/ha at Rhizophora mucronata dominated forest, while the lowest total AGC was 12.86 tons/ha with Ceriops tagal as the dominant species. The AGC estimation in mangrove stands correlated positively with DBH and tree height. However, the biomass content and AGC are affected by the number of mangrove stands. The difference in the number of stands affect the amount of carbon content at each sample point.
Temporal variation of water suitability for paddy irrigation needs at karst springs influenced by allogenic recharge in Gunungsewu Karst Area, Indonesia
Authors: Cahyadi Ahmad , Haryono Eko , Adji Tjahyo Nugroho , Widyastuti Margaretha , Agus Riyanto Indra , Aji Adityas Pradana Kusuma , Fatchurohman Hendy , Tastian Naufal Fattah , Muhammad Dzakwan Taufiq Nur
Published: October 2020

Irrigation, a critical element in farming, can fulfill crop water needs and increase agricultural productivity during the dry season, provided that the two necessary factors are met, namely water supply and water quality. Water quality is a principal factor in assessing whether or not a water body is usable as a source of irrigation. Excess or lack of elements in irrigation water may affect irrigated crops and soil. For maximum harvests, studies scrutinizing the suitability of water supply for irrigation become necessary. Beton Spring has a large discharge, which the people of Ponjong District, Gunungkidul Regency, rely on for their irrigation and fish farming practices. Uniquely, this karst spring receives allogenic recharges from outside the karst area. This research was intended to assess the suitability of water quality of Beton Spring for temporal irrigation purposes by Sodium analysis (Na%), Sodium Adsorption Ratio (SAR), USSL, and Wilcox. The elements observed in the analysis were Ca2+, Na+, Mg2+, K+ and electrical conductivity. Based on the overall analysis results of the water quality series—Sodium analysis (the water samples were classified as Excellent), SAR (Excellent), USSL (moderate to good), and Wilcox (Excellent to Good), Beton Spring produces good-quality water that is suitable for irrigation.
Trends of significant wave height and sea level in the southern water of the Special Region of Yogyakarta
Authors: Martono  , Susanti Indah , Siswanto Bambang , Nurlatifah Amalia , Suhermat Mamat , Maryadi Edy
Published: October 2020

Coastal zone is very vulnerable to the impacts of climate change. The increase of sea wave and sea level rise threaten coastal zone. The purpose of this study is to determine trends of significant wave height and sea level in the southern waters of the special region of Yogyakarta. The data used consists of daily significant wave height from 2010-2018, weekly absolute dynamics topography from 2005-2018 and daily surface wind from 2010-2018. Trends of significant wave height and sea level were analyzed by using linear regression. The results showed that significant wave height during the east season until the second transition season was higher than the west season and the first transition season. Vice versa, sea level during the east season until the second transition season was lower than the west season and the first transition season. Trends of significant wave height has increased of 0.63 cm/year, meanwhile sea level rise reached 0.82 cm/years.
Vegetation covers change and its impact on Barchan Dune morphology in Parangtritis Coast, Indonesia
Authors: Laksono Agung , Saputri Agatha Andriantari , Pratiwi Calvina Izumi Bunga , Arkan Muhammad Zaki , Putri Ratih Fitria
Published: October 2020

Barchan dune is a peculiar type of dune that forms in wind corridors at the Inner Zone of Parangtritis Sand Dune. Their existence is increasingly threatened by land-use changes, especially vegetation coverage. This research illustrates the dynamics of vegetation cover change at the Inner Zone with the NDVI value approach using Sentinel-2 imagery. We also conduct field surveys to determine the actual condition of barchan dunes and compare it to previous morphology data. We only used the slip face height as a parameter of the barchan morphometric. The result showed that the vegetation coverage changed annually in different parts of the Inner Zone from 2015 until 2019. This vegetation covers controlled by restoration program in 2015 and 2016. The vegetation density on the transport zone more significantly affected the morphology of barchan than vegetation density which grow on the barchan body. Based on field data, mostly barchan dunes (10 barchans) experienced a decrease of slip face height than increased slip face height (4 barchans). All of the decreased barchans located in the middle of the Inner zone. The most decreased slip face height as low as 29.3 meters.
Characteristic of multi-ethnic settlement in Indonesia, a case study: Kampung 3-4 Ulu Laut settlement on Musi Riverbank in Palembang City
Authors: Agustian Endy , Rachmawati Rini , Rijanta Raden , Pitoyo Agus Joko
Published: October 2020

The plurality found at Kampung 3-4 Ulu Laut settlement on Musi Riverbank in Palembang city is one example of a case that can represent multi-ethnic settlement in Indonesia. The settlement consists of various kinds of ethnic, including native Palembang ethnic, Palembang Cirebon ethnic, Palembang Chinese ethnic, and migrant ethnics from areas outside of Palembang city. The existence of various multi-ethnic groups has influenced several physical sites of settlement, economic activities, social-cultural activities, and the basic values of life in settlement. This research aims to explore the empirical evidence at Kampung 3-4 Ulu Laut, so the characteristics of the settlement can be identified. The research method used is a case study research method that focuses on individual representation of a group, organization, situation, event or phenomenon in a natural context. Data is collected through a variety of data collection techniques, including documents, archival records, in-depth interviews, direct observation, and physical devices. The results showed that there were cultural variations between ethnic groups, both from the physical side of settlement, economic activities, social-cultural activities, and the basic values of life, which indirectly became a characteristic for settlement of Kampung 3-4 Ulu Laut on Musi Riverbank in Palembang city.
Economic valuation of Blue Lagoon Tourism Village Widodomartani Sleman
Authors: Ernawan Fikri Nurrachman , Harini Rika
Published: October 2020

Blue Lagoon Tourism Village is one of the developing tourism villages in Sleman Regency. Blue Lagoon Tourism Village has great potential to become an advanced tourism village when viewed from the aspect of attraction, accessibility, facilities, and ancillary services (4A). Research objectives are to calculate the economic valuation using the travel cost method and calculate bequest value of the Blue Lagoon Tourism Village. This research conducted by sequential explanatory technique that uses quantitative and qualitative methods in sequence. Assessment of the economic value of tourism activities in the Blue Lagoon analyzed using the Individual Travel Cost Method (ITCM). Multiple linear regression tests were also conducted to obtain the value of regression function. Otherwise calculation of bequest value is carried out using the contingency valuation method (CVM) in the form of willingness to pay (WTP). Potential economic value of Blue Lagoon Tourism Village is IDR 6 019 052 924 yr–1, while actual economic income is IDR 1 802 827 450 or 23.05 % of economic potential. Bequest value of Blue Lagoon is IDR 610 521 783 yr–1 with 6.45 ha of area, so bequest value based on area is IDR 94 650 758.
Mathematical simulation of forest fire front influence on wood-based building using one-dimensional model of heat transfer
Authors: Baranovskiy Nikolay V , Malinin Aleksey
Published: October 2020

The purpose of the present paper is to mathematical simulation of heat transfer in enclosures of wood-based building when exposed to thermal radiation from forest fire front. One-dimensional mathematical model is used. Mathematically, heat transfer in building enclosures is described by system of non-stationary equations of heat conduction with corresponding initial and boundary conditions. It is suggested to use several scenarios of forest fire impact. Temperature distribution on wall depth is obtained for different scenarios of forest fire impact on building enclosures.
The effect of Alfalfa (Medicago sativa L.) on different basal feeds for hybrid duck performance
Authors: Samur Salnan Irba Novaela , Suwignyo Bambang , Suryanto Edi
Published: October 2020

The aimed of this research was to determine effect of Supplementation of Alfalfa (Medicago sativa L.) on different basal feeds for hybrid duck performance. This research was conducted by in vivo method with 120 MA (Mojosari x Alabio) of hybrid ducks type. The method was being used in this research include 4 treatments and 6 repetitions with 5 ducks each repetition. The treatment consisteds of P1 = Commercial feed 100 %, P2 = Alternative feed 100 %, P3 = Commercial Feed 90 % + supplementation of fresh alfalfa 10 % and P4 = Alternative feed 90 % + supplementation of fresh alfalfa 10 %. Feed and water was offered Ad libitum. The Observed variables were feed consumption, body weight gain and feed conversion ratio (FCR). The data was analyzed by the Program of Statistical Package for Social Science (SPSS) version 22. Duncan’s multiple range test (DMRT) analyzed was implanted for significant differences data. The results showed that 10 % alfalfa supplementation in commercial feeds and alternative feeds have significant lower/higher (P <0.05) value of feed consumption, weight gain and FCR value. Based on these results it can be concluded that commercial feed without alfalfa supplementation was the most optimal treatment of other treatment feeds for hybrid duck performance.
The comparative analysis of TL-SDI values, within the area of administrative posts in the municipality of oecusse
Authors: Purwatiningsih Sri Endang , Sukamdi Sukamdi , Giyarsih Sri Rum
Published: October 2020

This research aims to analyze and compare value of TL-SDI, within area of administrative posts in the municipality of Oecusse related to internal migration status. This study uses a quantitative approach based on the CPH-TL 2015 and TLSLS 2014 data, using lifetime migration that applied on the concept of TL-SDI, SCI, EcCI, and EnCI within area of administrative posts in the municipality of Oecusse. Analysis comparison of TL-SDI uses CSpro, SPSS, and Excel, tools with the amount of sustainable development indexes is the percentage of migration rates. The results of this study have produced three (3) type of specific values of TL-SDI, rejected the hypothesis that there is no significance the values of TL-SDI between the migrant population and the non-migrant population. The TL-SDI values in migrant populations are higher than in non-migrant populations. TL-SDI values in each region can be used as an evaluation of the results of development so far has been running and can be used as regional planning material, especially for indigenous people or migrants who come to the region.
Land resource analysis in Jakarta Special Province, Indonesia
Authors: Kurniasari  , Santi Dewina Inggar , Rahmawati Laelina , Muhammad Dzakwan Taufiq Nur , Laksono Agung , Maulidina Wisha Puti , Putri Ratih Fitria , Harini Rika , Sumantyo Josaphat Tetuko Sri
Published: October 2020

The increasing number of Jakarta Special Province residents further increased the amount of land required for daily usages. In order to maintain and improve the economy, agricultural land-use continued to be converted into non-agricultural land-use. The reduced amount of agricultural land-use was able to increase the population pressure on said land, surpassing the land carrying capability. Analyzing the remaining land resources of Jakarta Special Province aimed to understand the changes in land-use, land carrying capability, the scale of land resources, and to determine the population pressure of the residents of Jakarta Special Province. The methods used in this analysis was to use secondary data, presented in the form of tables, graphs, and maps, as well as quantitative and qualitative descriptive analysis. In general, Jakarta Special Province had experienced a conversion of agricultural land-use into non-agricultural land-use (e.g. residential and industrial) between the year 2010 to 2018. The number of residents had exceeded the carrying capacity of Jakarta’s land. This resulted from a growing need for non-agricultural land as well as the amount of population pressure, causing the unmet settlement needs.
Mask R-CNN for rock-forming minerals identification on petrography, case study at Monterado, West Kalimantan
Authors: Iyas Muhammad Ridwan , Setiawan Nugroho Imam , Warmada I Wayan
Published: October 2020

This paper explores the experiment of Deep Learning method using Mask Region-Convolutional Neural Network (Mask R-CNN) to identify rock-forming minerals on thin section images from petrographic observation in igneous rocks, which are plagioclase, quartz, K-feldspar, pyroxene, and hornblende. Train and validation dataset consisted of 2 quartz diorites and 1 granodiorite from Monterado, West Kalimantan, 1 quartz diorite and 1 granite from Nangapinoh, West Kalimantan, and 7 andesite and 2 basalts from Bangli, Bali, while test dataset consisted of 3 quartz diorites from Monterado, West Kalimantan. This study uses 4 Mask R-CNN models, which is influenced by the lighting on polarizing microscope and using ResNet-50 architecture (Model A) or ResNet-101 (Model B), and the models that is not affected by the lighting on polarizing microscope and using ResNet-50 architecture (Model C) or ResNet-101 (Model D). From Average Precision scores, it was found that Model B has the highest score (58.0%), followed by Model A (57.8%), Model C (45.8%), and Model D (43.6%). In conclusion, the lighting of polarizing microscope is a major factor to give a better performances of Mask R-CNN models by 12%-14.4%, while the type of backbone architecture on Mask R-CNN models was not too consequential.