bluuebunny/crossref_metadata_2025_split huggingface dataset:
Coral reefs distribution using Sentinel-2A imagery in Belanda Island, Bira Besar Island and Pramuka Island at Kepulauan Seribu National Park
Authors: Rahman T A , Supriatna S , Saraswati R 
Published: July 2020

Abstract
Kepulauan Seribu is known as the tourism sector, especially marine tourism and has the optimal oceanographic conditions for coral reefs suitability. Kepulauan Seribu National Park is an area as a form of conservation for coral reef ecosystems and other species with strict supervision and some restricted areas. In order to keep maintaining the conservation area, other factors such as economic and social factors are also considered by making the zone according to its location and function. Several zoning used of the area facing different problems or pressure either from natural factors or human activities. The purpose of this study was to analyze the distribution of coral reefs and the differences related to the physical characteristics of the waters in each zoning in the Kepulauan Seribu National Park using Sentinel-2A imagery. After that, data processing of research variables was carried out using bathymetry, sea surface temperature anomaly and ocean brightness data. This study found that the pattern of coral reef distribution on Belanda Island is centered on the Northeast while on Bira Besar Island and Pramuka Island are spread evenly along the reef flat. The highest percentage of coral reef distribution is found in the core zone & protection, which is equal to 6 % of all benthic habitat areas on the research island. In addition, inter-zoning has brightness and depth characteristics that vary according to geographical location.
The distribution and petrography characteristics of material eruption in the south of Rawa Danau, Banten Province
Authors: Grandis G , Indra T L , Syahputra R 
Published: July 2020

Abstract
Banten is an area that has geological uniqueness, particularly in Rawa Danau on the North side. The research area is a young volcanic complex surrounded by several mountains such as Mount Aseupan, Parakasak, and Karang in Serang district in Banten province. The Rawa Danau consists of swamp and lake, which is located inside an estimated Pliocene-Pleistocene caldera as the result of the ancient volcanic eruption. Based on the previous study the lithology of the lake was fine-grained fluvial sediment and swamp deposit with volcanic material. The aim of this study is to reconstruct the behaviour of the eruption in the research area and to know the area affected by the eruption using petrography analysis. The research area is dominated by pyroclastic such as breccia, tuff, and andesite in the form of lava flow and basalt that originate from M. Parakasak, M. Aseupan, and M. Karang. The mineral contents of the igneous rocks are plagioclase, pyroxene, and opaque with the microlith plagioclase as the groundmass. The degree of plagioclase extinction angle was used to differentiate between andesite rock and basalt rock. Andesite rock has more acidic plagioclase than basalt rock. The texture of andesite rock is trachytic implied that the geometry is a lava flow. The basalt rock has porphyritic texture and becomes the part of the caldera wall of Mount Parakasak.
Study of pottery materials in Muarojambi Temple complex and Batanghari River sediment in Jambi Province, Indonesia based on the mineralogical and petrographical analysis
Authors: Savira D , Sihombing F M H , Sulistyowati D , Indra T L 
Published: July 2020

AbstractPottery is a ceramic which generally used as household utensils or religious necessities such as spiritual ceremonies. This object has been used by society since long time ago that make it has certain historical and cultural values. One problem with pottery that it is hard to define its source. We believe that mineralogy could help finding the source of the pottery by comparing mineralogy of pottery and mineralogy of alluvial sand that usually used for pottery. This study was carried out to analyze the pottery-forming material of pottery fragments in the Muaro Jambi Temple complex and compare them with the Batanghari River sediments on the opposite to the temple. Data retrieval is done by collecting pottery fragments in the excavation field and taking sand samples in the downstream of the Batanghari River. The fragments of pottery and river sands were separated based on their texture and analyzed using microscope. Each material will be described based on its physical appearance and frequency of existence. From the study we found that minerals found in the pottery fragments from Muaro Jambi have similarity with the mineralogy of alluvial sand from Batanghari River. Thus, it might be a good indication that there is a correlation between them. From this research, we also conclude that the mineralogy characteristic could be useful for identifying the source of pottery.
Geomorphology study in relation to ground subsidence on urban area with sandbox simulation
Authors: Iskandarsyah  , Supriyanto  , Syahputra R 
Published: July 2020

Abstract
Ground subsidence on urban area are one of the major factors of disaster. in urban area such as Jakarta, ground subsidence is frequently occurred on main road and densely populated building. Study of surface elevation changes due to influence of groundwater movement have broadly discussed. In Many areas of subsidence caused by groundwater pumping have been identified and monitored. To understand more advance in subsidence process through direct experiment. The sandbox simulation of surface structure changes due to material movement. The simulation projects the surface elevation changes due to loss of mass.
Fabric study in metamorphic rocks in Karangsambung, Kebumen, Central Java
Authors: Putri A A O , Augusty D G , Sihombing F M H , Indra T L 
Published: July 2020

Abstract
Process of deFormation has an effect on both dynamic and regional metamorphic rocks. Metamorphic rock of Manunggal Formation can be found as large outcrops in Karangsambung, Central Java. In this research, we did geological mapping in the Manunggal Formation outcrop area and took rock samples. The rock samples are then analysis macroscopically to determine their metamorphic facies. From our study, we are able to identify the various degrees of metamorphism within the study area. This variation are concluded from the detailed macroscopic of mineral composition and rock texture of the rock samples from Manunggal Formation. The metamorphism process in rocks produced foliation textures on metamorphic rocks that are either foliated like phyllite and schist, or non-foliated such as green rock, serpentinite, and hornfels. All of this variation are plotted into the geological map and showing specific trend that might be related to past tectonic activity in the study area.
Lineament mapping using remote sensing and correlation on surface manifestation distribution in Gunung Endut, Banten Province, Indonesia
Authors: Tanjung F H , Dhianaufal  , Rahmadhani A U , Sihombing F M H , Sahdarani D N , Supriyanto  
Published: July 2020

Abstract
Remote sensing has become one of the most used methods in geothermal exploration. This technology is used to detect the presence of lineaments located in the area of geothermal exploration. The lineament can be expressed in the form of ridges and valleys. These features are closely related to the existence of geological structures. Geological structures act as weak zones (permeable zones) for the fluid to come out to the surface which will provide the circulation that forms the geothermal system. The research area is geographically located in 06°35’58” S and 106°17’01” E. Overall, the area of the research is about 325 km2 included 51 sub-districts in Lebak Regency, Province of Banten. This research area covers the entire area of Mount Endut and east of Mount Talaga and was included in the geological map of Leuwidamar dominated by Pleistocene Endut volcanic rocks (Qpv) which consists of volcanic breccia, lava, and tuff. The geological structures that developed in the study area are in the form of faults and folds. The data used in lineaments extraction were Digital Elevation Model derived from ASTER GDEM which has a vertical accuracy of 10–25 m. Meanwhile, the data on the existence of manifestations were obtained from the Geothermal Potential book published by the Geological Agency, Ministry of Energy and Mineral Resources. In extracting lineaments, the PCI Geomatica software was automatically used with the LINE algorithm. In the calculation of ground surface temperature, ENVI software is used together with The Law of Wien Shift. The general direction of alignments obtained is NNW-SSE. There are 5 unexpected faults related to the distribution of surface manifestations. The results of the structure interpretation in general show the relationship with the existence of surface ground temperature anomalies distribution. This is caused by the existence of a weak zone (permeable zone) as a place for the hot fluid to escape which will affect the surface temperature of the ground.
Identification of reservoir characteristics based on seismic velocity tomography using microearthquake method in “X” geothermal field
Authors: Fathan F , Daud Y 
Published: July 2020

Abstract
This research studies microearthquake (MEQ) data analysis in “X” geothermal field. The data was recorded in two phases; before and during drilling, with a total number of 2863 events recorded. The quality assessment method was applied using wadati diagram analysis in order to select the best quality data for advance processing. The result shows that the MEQ events are having trend of Vp/Vs ratio around 1.76. The MEQ data then processed using tomography inversion technique to obtain the image of subsurface seismic velocity structure. The results of seismic tomography inversion shows anomaly pattern which consistent with the lithology and geological structure. The results also shows a good agreement with the interpretation of resistivity section from magnetotelluric (MT) data, as well as from geochemical data. The region infered as reservoir zone are observed with dominantly high Vp/Vs anomaly which indicates incompressible characteristics that may relate to existence of water content, while the low Vp/Vs anomaly which indicates steam cap existence are not observed in this region. This pattern of anomaly leads to inference that the reservoir characteristics are dominated with liquid phase of fluid.
Hydrothermal alteration studies of Gunung Endut, Banten with petrographic method
Authors: Oktaviani N P , Primayudha F , Dhianaufal  , Sahdarani D N , Sihombing F M H , Supriyanto  
Published: July 2020

Abstract
Hydrothermal alteration is a great indicator of thermal fluid dynamics, especially in a geothermal system. Hydrothermally altered minerals are formed based on temperature and the properties of the protolith. Hydrothermal alteration samples from Gunung Endut Geothermal Working Area were analysed using petrography methods. Importance in determining the hydrothermal alteration for geothermal alteration are use as geothermometers, predict scaling and corrosion, estimate fluid pH and many more. Temperature, permeability and fluid type involved in the alteration process were identified based on the thin section observation. Majority of the samples shows the presence of clay minerals, chlorite and pyrite, indicating a moderate intensity of alteration formed under an argillic alteration environment at ≤ 180 °C. Based on the altered minerals observed under the petrographic microscopy, we then deduce that acidic fluids are the main type of fluid found in Gunung Endut Geothermal Working Area because that argillic alteration minerals showed acid environment.
Influence of Physical Mixing Ratio on Pore Development in Highly Porous Carbon Prepared From Nipa Palm Husk Using Hydrothermal Carbonization with Chemical Activation
Authors: Dechabun Sutthinan , Udomsap Parncheewa , Chollacoop Nuwong , Eiad-Ua Apiluck 
Published: July 2020

Abstract
In this study, porous carbon materials were prepared from nipa palm (Nypa fruiticans) husk using hydrothermal carbonization process with KOH activation through physical mixing. In order to investigate effects of factors on carbon products, hydrothermal temperature and duraton were set to 180°C and 8 hours, and KOH:hydrochar activation weight ratio at 1:1, 1:2 and 1:3, respectively. Prepared carbon materials then were carbonized at 900°C for 2 hours under nitrogen atmosphere and characterized by scanning electron microscope, fourier-transform infrared spectroscopy and x-ray diffraction. According to the results, carbon material produced using physical mixing activation ratio of 1:1 shows the most significant pore development and surface chemical properties, leads to finding a promising way to prepare environmental-friendly highly porous carbon material from biomass.
Optimization of Cutting Parameters in Machining Polyoxymethylene Using RSM
Authors: Aruna M 
Published: July 2020

Abstract
Polyoxymcthylene (POM) is an extensively used engineering thermoplastic polymer. Owing to its superior properties and potential applications in numerous turfs of structural machineries, it is essential to probe the machining of POM. The economy of machining operations plays an imperative role in increasing productivity and effectiveness. The persistence of optimal cutting parameters, such as cutting speed, feed and depth of cut, which are valid for given cutting tools, is one of the dynamic segments in process planning of metal parts. This research work concerns an experimental study dealing with cutting parameters and its effects on surface roughness (Ra) and material removal rate (MRR) during the turning of POM. The approach is based on Response Surface Technology (RSM). Experiments are designed using central composite design and second-order quadratic models are developed to define the optimal machining parameters. These optimized parameters are validated experimentally.
Global dynamics of a Wilson polynomial Liénard equation
Authors: Chen Haibo , Chen Hebai 
Published: July 2020

Gasull and Sabatini in [Ann. Mat. Pura Appl. 198 (2019), pp. 1985–2006] studied limit cycles of a Liénard system which has a fixed invariant curve, i.e., a Wilson polynomial Liénard system. The Liénard system can be changed into

x
˙

=
y
−
(

x
2

−
1
)
(

x
3

−
b
x
)
,

y
˙

=
−
x
(
1
+
y
(

x
3

−
b
x
)
)

\dot x=y-(x^2-1)(x^3-bx), ~ \dot y=-x(1+y(x^3-bx))

. For

b
≤
0.7

b\leq 0.7

and

b
≥
0.76

b\geq 0.76

, limit cycles of the system are studied completely. But for

0.7
>
b
>
0.76

0.7>b>0.76

, the exact number of limit cycles is still unknown, and Gasull and Sabatini conjectured that the exact number of limit cycles is two (including multiplicities). In this paper, we give a positive answer to this conjecture and study all bifurcations of the system. Finally, we show the expanding of the moving limit cycle as

b
>
0

b>0

increases and give all global phase portraits on the Poincaré disk of the system completely.
Formidable females redux: male social integration into female networks and the value of dynamic multilayer networks
Authors: Bonnell Tyler R , Vilette Chloé , Young Christopher , Henzi Stephanus Peter , Barrett Louise 
Published: July 2020

Abstract
The development of multilayer network techniques is a boon for researchers who wish to understand how different interaction layers might influence each other, and how these in turn might influence group dynamics. Here, we investigate how integration between male and female grooming and aggression interaction networks influences male power trajectories in vervet monkeys Chlorocebus pygerythrus. Our previous analyses of this phenomenon used a monolayer approach, and our aim here is to extend these analyses using a dynamic multilayer approach. To do so, we constructed a temporal series of male and female interaction layers. We then used a multivariate multilevel autoregression model to compare cross-lagged associations between a male’s centrality in the female grooming layer and changes in male Elo ratings. Our results confirmed our original findings: changes in male centrality within the female grooming network were weakly but positively tied to changes in their Elo ratings. However, the multilayer network approach offered additional insights into this social process, identifying how changes in a male’s centrality cascade through the other network layers. This dynamic view indicates that the changes in Elo ratings are likely to be short-lived, but that male centrality within the female network had a much stronger impact throughout the multilayer network as a whole, especially on reducing intermale aggression (i.e., aggression directed by males toward other males). We suggest that multilayer social network approaches can take advantage of increased amounts of social data that are more commonly collected these days, using a variety of methods. Such data are inherently multilevel and multilayered, and thus offer the ability to quantify more precisely the dynamics of animal social behaviors.
Simultaneous transfemoral valve-in-valve transcatheter aortic valve replacement and debranching thoracic endovascular aortic repair through a tortuous and shaggy aorta: a case report
Authors: Kadoya Yoshito , Zen Kan , Yaku Hitoshi , Matoba Satoaki 
Published: July 2020

Abstract

Background
Transcatheter aortic valve replacement (TAVR) is a viable treatment option for managing aortic prosthetic valve dysfunction. Although the transfemoral approach is the most commonly used and preferred treatment strategy for TAVR, complex vascular access, such as aortic aneurysm, severe tortuosity, and shaggy aorta, is challenging.

Case summary
An 87-year-old man, who underwent surgical aortic valve replacement for aortic stenosis using a 21-mm Carpentier-Edwards Perimount Valve, presented with New York Heart Association functional Class III dyspnoea. He was diagnosed as having severe symptomatic structural valve deterioration of a bioprosthetic aortic valve. Computed tomography revealed a tortuous and shaggy descending aorta with a saccular aneurysm in the aortic arch. Simultaneous transfemoral valve-in-valve TAVR and Zone 2 thoracic endovascular aortic repair (TEVAR) with debranching were successfully performed using a 22-Fr 65-cm sheath. Although the patient developed paraplegia due to transient spinal cord ischaemia associated with TEVAR, he fully recovered with vasopressor therapy.

Discussion
To the best of our knowledge, this is the first report on simultaneous successful ‘valve-in-valve’ TAVR and debranching TEVAR using the transfemoral approach. This case demonstrated the feasibility of single-stage transfemoral TAVR and TEVAR in a high-risk patient with multicomponent disease.
Coda-wave decorrelation sensitivity kernels in 2-D elastic media: a numerical approach
Authors: Duran Alejandro , Planès Thomas , Obermann Anne 
Published: July 2020

SUMMARYProbabilistic sensitivity kernels based on the analytical solution of the diffusion and radiative transfer equations have been used to locate tiny changes detected in late arriving coda waves. These analytical kernels accurately describe the sensitivity of coda waves towards velocity changes located at a large distance from the sensors in the acoustic diffusive regime. They are also valid to describe the acoustic waveform distortions (decorrelations) induced by isotropically scattering perturbations. However, in elastic media, there is no analytical solution that describes the complex propagation of wave energy, including mode conversions, polarizations, etc. Here, we derive sensitivity kernels using numerical simulations of wave propagation in heterogeneous media in the acoustic and elastic regimes. We decompose the wavefield into P- and S-wave components at the perturbation location in order to construct separate P to P, S to S, P to S and S to P scattering sensitivity kernels. This allows us to describe the influence of P- and S-wave scattering perturbations separately. We test our approach using acoustic and elastic numerical simulations where localized scattering perturbations are introduced. We validate the numerical sensitivity kernels by comparing them with analytical kernel predictions and with measurements of coda decorrelations on the synthetic data.
The Right to Oppose Further Commercialisation of Goods According to Art. 15(2) of the European Union Trade Mark Regulation ‒ A Balance of Interests?
Authors: Engin-Deniz Egon 
Published: July 2020

Abstract
This article addresses the balance between free competition and protecting the trade mark proprietor’s interests in the context of selective distribution systems for luxury goods and the right to oppose further commercialisation. Within this framework, the author suggests a flexible system concerning the legitimate reasons for such an opposition, especially regarding luxury goods in the consumer product sector. In particular, the author looks at whether distributors of parallel imported goods – often referred to as ‘grey market traders’ – should take into consideration the limitations and conditions for the distribution of goods in the European Economic Area that are imposed on contractually bound distributors by luxury brand owners, depending on the applied distribution method, the advertising and the quality of goods. The idea of an entitlement of the brand owner to oppose matters of further commercialisation of exhausted goods if the reseller does not comply with obligations which the trade mark proprietor imposes on members of his own selective distribution system regarding specific modalities of sale is also discussed.
Salivary and Serum Inflammatory Profiles Reflect Different Aspects of Inflammatory Bowel Disease Activity
Authors: Majster Mirjam , Lira-Junior Ronaldo , Höög Charlotte M , Almer Sven , Boström Elisabeth A 
Published: July 2020

AbstractBackgroundInflammatory bowel disease (IBD) can manifest both macroscopically and microscopically in the oral cavity; however, little is known about salivary changes in IBD. Therefore, this study aimed to assess salivary and circulatory inflammatory profiles in IBD and to compare their potential to reflect the presence and activity of IBD.MethodsWe measured 92 known inflammatory proteins in serum and in unstimulated and stimulated whole saliva samples from patients with IBD with active intestinal inflammation (n = 21) and matched control patients (n = 22) by proximity extension assay. Fifteen of the patients with IBD returned 10 to 12 weeks after treatment escalation for resampling.ResultsSixty-seven of the proteins were detected in all 3 sample fluids but formed distinct clusters in serum and saliva. Twenty-one inflammatory proteins were significantly increased and 4 were significantly decreased in the serum of patients with IBD compared with that of the control patients. Two of the increased serum proteins, IL-6 and MMP-10, were also significantly increased in stimulated saliva of patients with IBD and correlated positively to their expressions in serum. None of the investigated proteins in serum or saliva were significantly altered by IBD treatment at follow-up. Overall, inflammatory proteins in serum correlated to biochemical status, and salivary proteins correlated positively to clinical parameters reflecting disease activity.ConclusionsSaliva and serum inflammatory profiles in IBD share a similar composition but reflect different aspects of disease activity. The oral cavity reflects IBD through elevated IL-6 and MMP-10 in stimulated saliva.