bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Modifications of Electronic and Optical Properties of Bulk Molybdenum Disulfide by Oxygen Substitution
Authors: Charvia Louis , Muhammady Shibghatullah , Darma Yudi 
Published: September 2019

Abstract
We study the electronic and optical properties of bulk MoS2 and MoSO systems using the plane-wave method within the generalized gradient approximation. The structural properties show that the O substitution at S sites tunes the z-axis Wyckoff positions of all atoms and the bond angles. The electronic band structures show that the substitution tunes the conduction band minimum at 0.8 Σ to M and significantly promotes more localized valence states compared to that of MoS2 system. The localization, mainly applying to Mo 4d and S 3p states, is more pronounced above −4 eV. Below −4 eV, O 2p states are dominant indicating that they are more stable than S 3p states. However, the substitution slightly increases the indirect and direct (K → K) bandgap of MoS2 system. From the optical properties, both systems show the strong optical dichroism. By means of the substitution, the σ1 width significantly enhances, while the plasmonic-state energy levels decrease. Our result emphasizes that the O substitution significantly tunes the electronic and optical properties of bulk MoS2 system.
Study on Graphene Oxide (GO) Supernatant Dilution to the Optical and Electrical Properties of TCF Based-reduced Graphene Oxide (RGO) Films
Authors: Rahmawati Dina , Aimon Akfiny Hasdi , Iskandar Ferry , Wibowo Arie , Khairurrijal Khairurrijal 
Published: September 2019

Abstract
Graphene is a potential material to replace indium tin oxide (ITO) and fluorine tin oxide (FTO) as a transparent conductive films (TCF) due to its high conductivity and transparency. In this study, fabrication of graphene-based TCF was carried out by means of the drop-casting method, with graphite oxide as the raw material. The graphene oxide (GO) was diluted by adding 1, 3, 5, and 7 ml of distilled (DI) water. The sample was also heat treated to ensure complete reduction process. The deposited films were characterized using UV-Vis spectroscopy and I-V to investigate their optical and electrical properties. Based on the measurement results, sample with 3 ml DI water addition gives transparency and sheet resistance (Rs) of 41.01 % and 9.43 kΩ/sq, respectively. This material has a great potential to be applied as the optoelectronics material.
Fabrication of Flexible Graphite Film Using a Mechanical Method and Its Application in Tio2/Graphite Solar Cell as a Flexible Counter Electrode
Authors: Rahman Dui Yanto , Utami Fisca Dian , Margaretta Desyana Olenka , Sustini Euis , Abdullah Mikrajuddin 
Published: September 2019

Abstract
We have successfully fabricated solar cell using flexible counter electrode of graphite powder. TiO2 / graphite suspension was simply poured onto heated Fluorine Tin Oxide (FTO) substrate and kept heated at 200°C for 2 hours. PVA.LiOH polymer electrolyte was employed as a positive charge transfer medium. The counter electrode was made of graphite powder which is manually deposited on transparent plastic using tube-shaped metal which its surface covered with tissue of 2 mm thick. Graphite powder was deposited by straight motion of 20 movements for one coating or one layer. The same activity was repeated on the stacked film to increase the conductivity of the film. Resistivity and transmittance measurement of the film was performed by four-point probe method and UV-Vis equipment respectively. The film thickness and 2-D porosity were measured using an electronic microscope and ImageJ software orderly. The film resistivity and transmittance gradually decreased with the increase of coating number and reached the resistivity of 0.35 Ω.cm and transmittance of 5% for 40 times of coating. At the same time, the film thickness was saturated at the 30 times coating and reached the thickness of 9.4 μm. The film 2-D porosity which indicated how well the surface of the film covered the graphite also decreased to reach the film porosity of 18%. The most conductive film (40 times coating) was used as a flexible counter electrode in TiO2/graphite solar cell. The efficiency of this structure was 0.4 %, a reasonable efficiency achievement for a cheap material and easy method used.
Flexural Strength of Hybrid Mendong – C-glass/Epoxy Thermoseting Composites
Authors: Banowati L , Iskandar T K 
Published: September 2019

Abstract
Hybrid composite materials are those composites which have a combination of two or more reinforcement fibre in order to better mechanical properties. This paper concerns with development of hybrid composite materials using mendong and C-glass as the reinforcement and epoxy bakellite EPR 174 resin as the matrix, using hand lamination process. The mendong fibre was treated with alkali (NaOH). Hybrid mendong – C-glass/epoxy composite specimens were arranged to make a unidirectional (0°), bidirectional (0°/90°) and bidirectional (± 45°) fibre orientations with a 50% v/v fibre fraction content. The specimens were then tested using flexural tests, and the results were analyzed using two parameters Weibull distribution. The result shows that the flexural strength of hybrid mendong – C-glass/epoxy composites with a unidirectional (0°) is higher than other fiber orientations.
Zeolites as Adsorbent Materials for Decolorization of Crude Terpineol
Authors: Indarto A , Putra I A , Riyano  , Noersalim S , Hartanto Y , Handojo L 
Published: September 2019

Abstract
Zeolites are microporous crystalline aluminosilicates extensively used as adsorbents, catalysts, and ion exchange beds. The adsorption property of zeolite is expected to be applied as a decolorization agent for terpineol. Terpineol is an alcohol compound derived from turpentine oil and widely used as an active ingredient for disinfectants, cleansers, perfumes, and pharmaceutical purposes. Industrial-scale of terpineol production used two stages of reaction: the first stage is hydration of turpentine into terpin hydrate and the second stage is dehydration of terpin hydrate to terpineol. However, as terpin hydrate is easily oxidized, the product color will change from clear into dark solution and make the price of product cheaper. This study aims to increase terpineol selling price by removing unreacted terpin hydrate (decolorization) from crude terpineol. Zeolite is the main absorbent used in this study along with other similar materials i.e. activated carbon and silica gel. Performances of the adsorbent are indicated by its adsorption capacity and color clarity analysis. The results would be analyzed using GC-MS. Based on the experiment, it can be concluded that the best adsorbent is zeolite activated by acetic acid with 8-15 mg/g adsorption capacity and producing a terpineol purity of 83.5%. This activated zeolite was able to remove terpin hydrate from 9.41% to 0% and other impurities from 14.06% to 6.78%.
Characterization of Nano Chitosan-Cucumber Suri (Cucumis melo L.) Seeds with Sodium Tripolyphosphate as Crosslinker
Authors: Vifta Rissa Laila , Luhurningtyas Fania Putri , Fajarwati Febi Indah 
Published: September 2019

Abstract
Cucumber suri (Cucumis melo L.) is one of natural materials which has many bioactivities, such as antioxidant, antifungal, antibacterial, anti-cholesterol, antidiabetic, and several other activities. Eventough, Cucumber suri (Cucumis melo L.) has a fairly low flavonoid content. In addition, bioactive compounds in cucumber suri seeds tend to be difficult to dissolve in water, unstable to pH, and even have a low bioavailability. Nanoparticles can be used to increase the activity of natural materials by using chitosan and sodium tripolyphosphate as crosslinking agents. This study aims to determine the characteristics of nano chitosan-cucumber suri seeds (Cucumis melo L.). First, Cucumber Suri seeds weas previously extracted using maceration method and identified theirs bioactive compounds. And then, Cucumber Suri seed extract was encapsulated with Chitosan: STPP (5: 1). Characterization test was carried out using UV-Vis Spectrophotometry, Infrared Spectrophotometry, and Particle Size Analyzer (PSA). The encapsulation process of Cucumber Suri seed extract produces a clear, homogeneous and stable supernatant. The values of characterization with UV-Vis Spectrophotometry in 0 to 60 minutes was >90%, that indicated nanosized particleswas succefully formed. The IR characterization values indicate a shift in the nano chitosan-cucumber suri seeds wavelength compare with chitosan. The shift of –OH stretching vibration at wavelength 3403 cm−1 and stretching vibration of C=O in 1642 cm−1 showed there was an interaction between chitosan and Cucumber Suri seed extract. Analysis using Particle Size Analyzer (PSA) showed that chitosan-cucumber suri seeds had a normal polydispersion index (PI) of 0.677 and average particle diameter size was 360 nm.
Oka complements of countable sets and nonelliptic Oka manifolds
Authors: Kusakabe Yuta 
Published: September 2019

We study the Oka properties of complements of closed countable sets in

C

n

(
n
>
1
)

\mathbb {C}^{n}\ (n>1)

which are not necessarily discrete. Our main result states that every tame closed countable set in

C

n

(
n
>
1
)

\mathbb {C}^{n}\ (n>1)

with a discrete derived set has an Oka complement. As an application, we obtain nonelliptic Oka manifolds which negatively answer a long-standing question of Gromov. Moreover, we show that these examples are not even weakly subelliptic. It is also proved that every finite set in a Hopf manifold has an Oka complement and an Oka blowup.
An Electronic Strategy for Eliminating Unnecessary Duplicate Genetic Testing
Authors: Riley Jacquelyn D , Stanley Glenn , Wyllie Robert , Burt Holly L , Horwitz Sandra B , Cooper Donna D , Procop Gary W 
Published: September 2019

Abstract

Objectives
To determine the impact of an electronic intervention designed to block duplicate constitutional genetic tests.

Methods
We constructed, implemented, and studied an electronic intervention that stopped duplicate genetic tests. The activation frequency, types of tests affected, and cost savings achieved with this intervention were determined. The frequency and justification of override requests were also studied.

Results
This intervention stopped 710 unnecessary duplicate genetic tests over a 3-year period and saved $98,596. The tests with the highest numbers of alerts were those used for screening presurgical or transplant patients and were commonly part of an order set or test panel. Most override requests were justified because of the lack of exclusion codes in the initial programming.

Conclusions
Electronic interventions that stop duplicate genetic testing, if properly constructed, can reduce waste, save health care dollars, and facilitate patient care by directing the provider to a test that has already been performed.
1.Duplicate molecular genetic testing, although generally unnecessary, occurs due to challenges in locating previous results.
2.Clinical decision support at order entry alerts providers to previous genetic test results and restricts repeat orders.
3.This Once-in-a-Lifetime electronic intervention supports a value-based health care model by reducing unnecessary genetic testing and associated costs.
Development and Initial Testing of a Modified UroVysion-Based Fluorescence In Situ Hybridization Score for Prediction of Progression in Bladder Cancer
Authors: Kocsmár Ildikó , Pajor Gábor , Gyöngyösi Benedek , Székely Eszter , Varga Márton , Kocsmár Éva , Kenessey István , Beöthe Tamás , Süle Norbert , Majoros Attila , Szendrői Attila , Nyírády Péter , Kiss András , Riesz Péter , Lotz Gábor 
Published: September 2019

Abstract

Objectives
Our aim was to predict progression of non-muscle-invasive bladder urothelial carcinomas (NMIUCs) into muscle-invasive disease by assessing cytogenetic abnormality of tumors with a new UroVysion scoring system.

Methods
Seventy-five bladder cancer cases (including 57 NMIUCs) were classified according to the quantitatively assessed degree of UroVysion-detected chromosomal abnormalities into urine fluorescence in situ hybridization score (UFS) groups: UFS I, II, and III. Cox time-to-event, Kaplan-Meier, and C-statistics analyses were performed.

Results
UFS proved to be an independent prognostic factor of progression-free survival (PFS) and time to progression (TTP). NMIUCs with UFS III had a 34.05-fold increased hazard for progression to muscle-invasive cancer (TTP; 95% confidence interval, 5.841-198.5; P &lt; .001) in comparison with UFS I to II cases. The addition of UFS to conventional risk scores increased the C-index for PFS and TTP.

Conclusions
UFS can indicate an increased risk for progression into muscle-invasive disease in patients with NMIUC and improves prognostic accuracy of the current clinical risk assessment systems.
High and dry: Trade-off in arboreal calling in a treefrog mediated by local environment
Authors: Cicchino Amanda S , Cairns Nicholas A , Bulté Grégory , Lougheed Stephen C 
Published: September 2019

AbstractTrade-offs shaping behavioral variation are often influenced by the environment. We investigated the role that the environment plays in mediating trade-offs using a widespread frog with a conspicuous mating display, Pseudacris crucifer. We first demonstrated, using playback and desiccation experiments, that calling site selection involves a trade-off between sound transmission and desiccation. We then determined the influence of local environmental conditions on the intensity of the trade-off by examining range-wide behavioral and environmental data. We showed that the benefit of improved call transmission is positively influenced by vegetation density and ground cover. Behavioral data are consistent with this relationship: sites with a greater transmission benefit have increased prevalence of arboreally calling males. We also found that the prevalence of arboreal calling behavior increases with relative humidity and air temperature, suggesting an influence of these environmental variables on the desiccation cost of arboreal calling. This study provides a clear example of the role of the environment in mediating trade-off intensities and shaping critical behavioral traits.Local environment mediates the intensity of a trade-off associated with arboreal calling behavior in a treefrog. Combining observational and experimental approaches, we show that arboreal calling behavior increases the transmission of a mating call while potentially subjecting individuals to a rate of desiccation six times greater than terrestrial calling. Local environmental conditions influence both the benefit and the cost of this trade-off, subjecting different populations to varying trade-off intensities and shaping arboreal calling behavior.
Current RNA-seq methodology reporting limits reproducibility
Authors: Simoneau Joël , Dumontier Simon , Gosselin Ryan , Scott Michelle S 
Published: September 2019

Abstract
Ribonucleic acid sequencing (RNA-seq) identifies and quantifies RNA molecules from a biological sample. Transformation from raw sequencing data to meaningful gene or isoform counts requires an in silico bioinformatics pipeline. Such pipelines are modular in nature, built using selected software and biological references. Software is usually chosen and parameterized according to the sequencing protocol and biological question. However, while biological and technical noise is alleviated through replicates, biases due to the pipeline and choice of biological references are often overlooked. Here, we show that the current standard practice prevents reproducibility in RNA-seq studies by failing to specify required methodological information. Peer-reviewed articles are intended to apply currently accepted scientific and methodological standards. Inasmuch as the bias-less and optimal RNA-seq pipeline is not perfectly defined, methodological information holds a meaningful role in defining the results. This work illustrates the need for a standardized and explicit display of methodological information in RNA-seq experiments.
YTH domain family 2 promotes lung cancer cell growth by facilitating 6-phosphogluconate dehydrogenase mRNA translation
Authors: Sheng Hao , Li Zhen , Su Shixin , Sun Wenjing , Zhang Xiaoya , Li Leilei , Li Jing , Liu Shuangping , Lu Bin , Zhang Shuai , Shan Changliang 
Published: September 2019

Abstract
N6-methyladenosine (m6A) is one of widespread post-transcriptional mRNA modifications in eukaryotes and the m6A modification plays critical roles in various human cancers. However, the role of m6A-binding proteins in cancer metabolism remains elusive. Here, we report that YTH domain family 2 (YTHDF2) is upregulated in lung cancer tissues, promotes lung cancer cell growth and enhances the pentose phosphate pathway (PPP) flux, which is crucial for tumor growth. Mechanistically, YTHDF2 directly binds to the m6A modification site of 6-phosphogluconate dehydrogenase (6PGD) three prime untranslated region (3′-UTR) to promote 6PGD mRNA translation in lung cancer cells. Collectively, our data indicate that YTHDF2 acts as a tumor promoter to enhance tumor growth via facilitating 6PGD mRNA translation.
Sputum Gram Stain for Bacterial Pathogen Diagnosis in Community-acquired Pneumonia: A Systematic Review and Bayesian Meta-analysis of Diagnostic Accuracy and Yield
Authors: Ogawa Hiroaki , Kitsios Georgios D , Iwata Mitsunaga , Terasawa Teruhiko 
Published: September 2019

Abstract

Background
The clinical role of sputum Gram stain (SGS) in community-acquired pneumonia (CAP) diagnosis remains controversial. A 1996 meta-analysis of the diagnostic accuracy of SGS reported heterogeneous results. To update the available evidence, we performed a systematic review and a Bayesian standard and latent-class model meta-analysis.

Methods
We searched Medline, Embase, and Cochrane Central by 23 August 2018 to identify studies reporting on the diagnostic accuracy, yield (percentage of patients with any pathogen[s] correctly identified by SGS), and clinical outcomes of SGS in adult patients with CAP. Two reviewers extracted the data. We quantitatively synthesized the diagnostic accuracy and yield, and descriptively analyzed other outcomes.

Results
Twenty-four studies with 4533 patients were included. The methodological and reporting quality of the included studies was limited. When good-quality sputum specimens were selected, SGS had a summary sensitivity of 0.69 (95% credible interval [CrI], .56–.80) and specificity of 0.91 (CrI, .83–.96) for detecting Streptococcus pneumoniae, and a sensitivity of 0.76 (CrI, .60–.87) and specificity of 0.97 (CrI, .91–.99) for Haemophilus influenzae. Adjusted analyses accounting for imperfect reference standards provided higher-specificity estimates than the unadjusted analyses. Bacterial pathogens were identified in 73% (CrI, 26%–96%) of good-quality specimens, and 36% (CrI, 22%–53%) of all specimens regardless of quality. Evidence on other bacteria was sparse.

Conclusions
SGS was highly specific to diagnose S. pneumoniae and H. influenzae infections in patients with CAP. With good-quality specimens, SGS can provide clinically actionable information for pathogen-directed antibiotic therapies.
Adaptive Neuro-Fuzzy Inference System-based Nonlinear Equalizer for CO-OFDM Systems
Authors: Raj Ajay Amrit ,   Dejey
Published: September 2019

Abstract
The principle of orthogonal frequency-division multiplexing (OFDM) is to transmit the data through a large number of multiple orthogonal subcarriers. The coherent optical OFDM (CO-OFDM) is OFDM data that are being modulated to light frequency and being detected in coherent manner. CO-OFDM brings to optical communications the combination of two powerful techniques, coherent optical detection and OFDM. One of the primary challenges in the CO-OFDM system is to remove optical fiber nonlinear effects. This makes nonlinearity compensation a critical task of the CO-OFDM system. So a nonlinear equalizer (NLE) based on adaptive neuro-fuzzy inference system (ANFIS) is presented for CO-OFDM systems to mitigate nonlinearities on long-haul optical communications with high bit rate and bit error rate (BER)of the system. Various performance metrics were analyzed for the proposed ANFIS–NLE, and it is compared with existing techniques such as support vector machine and artificial neural network. From the experimental results, our proposed approach gives better performance in terms of BER and Q-factor on comparing with existing methods.
CalBehav: A Machine Learning-Based Personalized Calendar Behavioral Model Using Time-Series Smartphone Data
Authors: Sarker Iqbal H , Colman Alan , Han Jun , Kayes A S M , Watters Paul 
Published: September 2019

AbstractThe electronic calendar is a valuable resource nowadays for managing our daily life appointments or schedules, also known as events, ranging from professional to highly personal. Researchers have studied various types of calendar events to predict smartphone user behavior for incoming mobile communications. However, these studies typically do not take into account behavioral variations between individuals. In the real world, smartphone users can differ widely from each other in how they respond to incoming communications during their scheduled events. Moreover, an individual user may respond the incoming communications differently in different contexts subject to what type of event is scheduled in her personal calendar. Thus, a static calendar-based behavioral model for individual smartphone users does not necessarily reflect their behavior to the incoming communications. In this paper, we present a machine learning based context-aware model that is personalized and dynamically identifies individual’s dominant behavior for their scheduled events using logged time-series smartphone data, and shortly name as ‘CalBehav’. The experimental results based on real datasets from calendar and phone logs, show that this data-driven personalized model is more effective for intelligently managing the incoming mobile communications compared to existing calendar-based approaches.
Jordan centre in random trees: persistence and distance to root
Authors: Pattathil Sarath , Karamchandani Nikhil , Shah Dhruti 
Published: September 2019

Abstract
The Jordan centre of a graph is defined as a vertex whose maximum distance to other nodes in the graph is minimal, and it finds applications in facility location and source detection problems. We study properties of the Jordan centre in the case of random growing trees. In particular, we consider a regular tree graph on which an infection starts from a root node and then spreads along the edges of the graph according to various random spread models. For the Independent Cascade (IC) model and the discrete Susceptible Infected (SI) model, both of which are discrete-time models, we show that as the infected subgraph grows with time, the Jordan centre persists on a single vertex after a finite number of timesteps. As a corollary of our results, we also establish that the distance between the Jordan centre and the infection source (root node) is finite. Finally, we also study the continuous-time version of the SI model and bound the maximum distance between the Jordan centre and the root node at any time.