bluuebunny/crossref_metadata_2025_split huggingface dataset:
Use of Abcd-Matrix Method For The Simulation of Laser-Ultrasonic Probing Pulse Propagation In A Layered Medium of The Optical-Acoustic Transducer
Authors: Pashkin A. I. 
Published: April 2021

Abstract
As a first step methods for modeling the propagation of acoustic waves in layered media was analyzed and the need to develop a new, faster method is substantiated. As a consequence, presented a method for modeling the propagation of elastic waves based on signal transformation using ABCD matrices, for the implementation of which a computer program in the Python language has been developed. For the verification of the method was analyzed the correlation between the simulated signal and the signal obtained experimentally from a medium with predetermined parameters. Further on the basis of the data obtained, the applicability of this method for modeling the propagation of acoustic signals in a plane-layered medium has been proved. As a next step modern methods of ultrasound generation and their influence on the characteristics of the probing signal was reviewed. Confirmed that laser-ultrasound techniques allow the best control over the characteristics of the probe signal. Therefore, the influence of the duration of the laser pulse, the properties of light absorption and the acoustic characteristics of the generator medium on the probing signal amplitude and bandwidth of the spectrum was estimated. To reduce the influence of the considered characteristics on the diagnostic process using the ABCD-matrix method the optimal characteristics of the optical-acoustic transducer for diagnostics at low frequencies have been determined. Finally, the main advantage of the proposed modeling method is the high speed of calculating the shape and spectrum of the signal at any point in the medium at a given time.
Areas of natural conflicts in harmonized thematic maps of the Strzelin county
Authors: Kozińska P. , Górecki A. 
Published: April 2021

Abstract
Recently in Poland, there has been a strong emphasis on data harmonisation, which means data coherence, mainly spatial. The reason for this is the INSPIRE Directive [1] approved in 2007 and the Spatial Information Infrastructure Act [2] implemented on the basis of this Directive in Poland in 2010. On this basis, the aim of this study was to make the data from soil-agricultural maps and geological maps coherent, so that no natural conflicts would arise. The study was based on materials concerning soil classification a nd lithology, which are soil-agricultural and geological maps, but also on isohips. The method, which was applied, consisted in combination of attributes of the maps, then natural conflicts were identified, that is lack of smooth transition from soils to lithology - a given soil would not be able to develop on the indicated geological substratum. A significant part of the identified co nflicts req uired editing, however some of them can be treated as exceptions. The reason for such discrepancies is the lack of precise information on the deposited layers at the depth of 1.5 m - 2.0 m, which results from the measurement methods of the analysed maps. The last step was to eliminate these conflicts in order to generate consistent and harmonised data. As a result, a list of attributes of full compatibility was obtained, thanks to them maps of any parameters can be generated, and also a basis for presenting soils in a different systematics.
BIPA for Business Communication Learning Model Development through MOOC
Authors: Febrianti L Y , Devina  , Ningsih R Y 
Published: April 2021

Abstract
The study examines to acknowledge the learning model development of MOOC-based BIPA for Business Communication. This research uses 4D learning model development (define, design, development, and dissemination). The analysis was conducted to the international students of BINUS University International, and further validated by experts and lecturers of the course itself. Based on the need analysis, BIPA for Business Communication program is an intermediate level of BIPA program aiming at preparing students to understand Indonesian actively, gain knowledge of the language and socio-cultural background for business communication purposes. Serving all that purpose, the learning model developed put its axis on the activity in business context. Taking Udemy as the platform for MOOC delivery, the development of learning model is referred to features at Udemy. The elements of learning covers; (1) Video-based learning content; (2) course content; (overview); (4) question and answer; (5) notes, and (6) announcements. In total, 10 topics BIPA for Business Communication can be accessed within the course. Expert validations indicate that BIPA for Business Communication MOOC perceives well, in which the learning model development is 3.75 with the indicator 3,4 < x ⩽ 4,2.
Turning strawberry jam into slice: a new way of consuming strawberry fruits preservation products
Authors: Wahyuningtias D , Caroline A , Adiati M P , Levyta F , Kusumawardhana I 
Published: April 2021

AbstractThe goal of this article is to discover an acceptance and preference of consumer towards innovative products of slice strawberry jam. While an ordinary fruit preserves often made as a jam. Sliced jam is a new way of fruit preservation to consume. Through an organoleptic study, the paper starts to examine and compare between an original product of strawberry jam to sliced jam. A quantitative tradition of research employs an experimental approach to eighty untrained respondents. Data analysis and validity were generated from SPSS statistic software to measure the result of questionnaires towards a favorite between the two and its characteristics such as texture, taste, smell, and color. The findings reveal that the new form of strawberry jam slices is favored among the major respondents. The strawberry jam slice’s texture, taste, smell, and color also attract the consumerism. Despite the limitation of the study, the article introduces a new way of consuming strawberry fruits preservation products. Thus, the research discussion would take forward business development idea, particularly on fruit preserves preparation.
Effectiveness of Media and Communication Forms to Promote a Positive Behavior of the Society around Untirta New Campus toward Environmental Preservation
Authors: Salampessy Y L A , Suherna  , Muldi A 
Published: April 2021

Abstract
The vision of the University of Sultan Ageng Tirtayasa (UNTIRTA) as a Green Campus shows its sensitivity to the importance of environmental quality and quick response to developing living behaviours that prioritize environmental sustainability. This study aimed to describe the issues and actions of environmental preservation that are considered important by the community around the Untirta new campus and to analyze the media and forms of effective environmental communication messages to build positive attitudes towards environmental care actions. This research used a quantitative approach with survey and quasi-experimental design. The results showed that for the community around the Untirta new campus, the main environmental issue was the environment that felt arid and maintaining trees around the home environment as the most important environmental care action considered. The community showed a pro-environmental attitude in the neighbourhood where they live, while the media and forms of environmental communication messages that are most effective in increasing this attitude were banners with positive message forms.
Sugar palm (Arenga pinnata Wurmb Merr.): a review on plant tissue culture techniques for effective breeding
Authors: Muda NA , Awal A 
Published: April 2021

Abstract
This review paper outlines the plant tissue culture works done on sugar palm (Arenga pinnata Wurmb Merr.); a tree under the family Arecaceae and genus Arenga cultivated mainly for its sugary sap, sweetened endosperm and highly valuable industrial black fibers. Plant tissue culture technique is a method of growing plant cells, tissues and organs on an artificial nutrient medium under controlled aseptic conditions. Plant tissue culture is a revolutionary biotechnological tool which facilitates successful breeding programs and research of many incredible plant diversity particularly of species which are facing the risks of extinction, plants of valuable economic importance and plants with morphological and physiological sterility and incompatibility. The taxonomy, botanical description, population distribution, ecology and climate requirement, horticulture practice as well as the economic contributions and challenges of sugar palm were also described.
Improving Rice Productivity Through the Implementation of Jajar Legowo Super (Jarwo Super) Technology in Jambi Province
Authors: Endrizal  , Jumakir  , Bobihoe J 
Published: April 2021

Abstract
Jarwo super rice cultivation is the result of the development of integrated rice cultivation technology from Indonesian Agency for Agricultural Research and Development based on the legowo row planting method. The purpose of the study was to determine the adaptation of new superior varieties of rice and increase rice production by using the Inpari 30, Inpari 32 and Inpari 33 varieties through the application of jarwo super technology. The assessment activity was carried out in Rantau Panjang Village, Batang Asai District, Sarolangun Regency, Jambi Province, cooperated with the Tanjung Harapan farmer group (involving 21 farmers) with area of 10 ha. The activity was carried out from September to December 2016. The purpose of the study was to determine the growth performance and increase in production of new superior varieties Inpari 30, Inpari 32 and Inpari 33 through the application of super jarwo technology. The components of super jarwo rice cultivation technology included new superior varieties with high yield potential, straw decomposers, biological fertilizers, balanced fertilization based on the Paddy Soil Test Tool, and control of Plant Pest Organisms with vegetable and chemical pesticides based on control thresholds, as well as agricultural machinery (transplanter and combine harvester). The results of the study showed that the innovation of super legowo row (jarwo) cultivation technology with superior varieties Inpari 30, Inpari 32 and Inpari 33 was able to increase yields by an average of 3.41 t/ha (40 - 50%), with the production of each variety was Inpari 30 (5.60 - 8.58 t/ha), Inpari 33 varieties (6.50 - 8.20 t/ha), and Inpari 32 (7.25 - 7.30 t/ha). The results were higher than the average yield of the Ciherang comparison variety (4.60 t/ha) which was commonly grown in the Rantau Panjang location. Disemination of Jarwo Super technology has been carried out through technology guidance, fields meeting, and leaflets, generally farmers can receive the introduced super jarwo technology.
The Effect of Addition Glycerol Against Nori Characterization from Gracilaria sp and Ulva sp Seaweeds
Authors: Sinurat E , Fransiska D , Livia  
Published: April 2021

Abstract
Nori is an edible seaweed product and is known to form a sheet. This study involves the production of nori, from a mixture of Gracilaria and Ulva Lactuca seaweeds, at a ratio of 1:1. Besides, glycerol was adopted as a plasticizing biopolymer for food packaging materials. This study, therefore, aims to evaluate the characteristics of nori, following the addition of glycerol concentration (0.4; 0.6; 0.8; 1.0 percent) as a plasticizer on the nori/edible seaweed. The parameters evaluated include elongation percentage, tensile strength, WVTR, thickness, and water content. Moreover, treatments with 0.8 percent glycerol concentration generated edible seaweed films with the following characteristics: elongation percentage of 12.15%, while the tensile strength, WVTR, thickness, and water content were 2,67 M.Pa, 2268 gr/m2 day, 328.93 μm, and 12,75 %, respectively.
Analysis of glutamine synthetase activity from Lactobacillus hilgardii LMG 7934
Authors: Zhuravleva D , Yadykova L , Iskhakova Z , Kayumov A 
Published: April 2021

Abstract
Lactic acid bacteria (LAB) are Gram-positive, non-spore forming, facultative anaerobic or microaerophilic bacteria living in various nutrients-rich ecological niches and are widely used for dairy food and silage production as well as probiotics for the Human and animals. While bacteria can assimilate various nitrogen-containing compounds, the glutamine and ammonium are the most preferred nitrogen sources since they could be directly involved into the nitrogen metabolism of the cell. In bacterial cells, the glutamine can be synthetized from glutamate and ammonium ions by the metalloenzyme glutamine synthetase (GS). In contrast to other bacteria which generally have one gene encoding for the glutamine synthetase, two genes encoding proteins with 53% mutual identity and predicted glutamine synthetase activity were found in the genome of Lactobacillus hilgardii LMG 7934. One gene (glnA_2) is located in the glnRA operon with the transcriptional factor GlnR gene (glnR) similarly to GS genes from other bacteria. The second GS gene (glnA_1) is monocistronic. While the biosynthetic activity glutamine synthetases could be detected in L. hilgardii cells, which protein plays the major role is still unclear.
Refinement effect of Zirconium and Samarium on Al-4Mg cast alloy
Authors: Eisawi K , Tash Mahmoud , Khalifa Waleed , El-Mahallawi Iman 
Published: April 2021

Abstract
This study aims at investigating the modification response of cast Al-4%Mg alloy to Zirconium or Samarium additions at high and low levels. Thermal analysis was used to evaluate the influence of Zirconium and Samarium. The solidification data represented the four main reaction peaks during solidification and had shown that both Zr and Sm play a role in refinement with a depression in solidification temperature. Moreover, Sm acts as a modifier as it had noticeable effect on retarding the recalescence temperature. Microstructure Examination was implemented by optical microscopy, image analysis software and scanning electron microscopy (SEM) with the aid of image analysis and Energy Dispersive x-ray spectroscopy (EDS). The results revealed the formation of new intermetallic phases such as agglomerates of Al38.76MgZr7.04Ti0.52Fe0.07 and Chinese script shapes of Al25.28MgFe2.77Sm1.48. Accordingly, a noticeable grain size reduction is found with respect to the level of addition of Zr and Sm where Sm showed more refinement effect.
Energy density and storage capacity of La3+ and Sc3+ co-substituted Pb(Zr0.53Ti0.47)O3 thin films
Authors: Bhattarai Mohan K , Barrionuevo Danilo , Kumar Ashok , Katiyar Ram S 
Published: April 2021

Abstract
We studied the energy density and storage capacity properties of rare-earth modified lead zirconate titanate thin films. Highly oriented thin films of (PbZr0.53Ti0.47)(1−y)(LaxSc1−x)yO3 wherein; [for y = 0 and x =0 viz PL0] and, [for y = 0.1 and x = 0.2, 0.4, 0.6 and 0.8 viz PL2, PL4, PL6 and PL8 respectively] abbreviated as PL10x have synthesized on MgO (100) substrate by the pulsed laser deposition technique. The higher proportion of lanthanum increased the broadening of dielectric permittivity and dielectric maxima that shifted to higher temperatures with increasing frequency, signifying the relaxor-type behavior of these films. The value of the relaxation parameter varies from γ = 1.69 for PL6 and 1.95 for PL8 that was estimated from the linear fit of the modified Curie-Weiss law indicating the relaxor nature satisfying Vogel-Fulcher relation. Furthermore, we achieved enhanced spontaneous polarization of the fabricated thin films. Slim loop hysteresis was observed on tuning lanthanum and scandium and the estimated recovered energy density (Ure) is 51.15 J cm−3 and 26.54 J cm−3 with efficiency (η) of 47.38% and 65.88% respectively for PL6 and PL8 thin films. The high dielectric permittivity, high breakdown strength, and enhanced energy storage density of thin films could make it promising materials for memory, power electronics, and energy storage applications.
Response of Beetle Assemblages (Insecta: Coleoptera) to Patch Characteristics and Habitat Complexity in an Ever-Expanding Urban Landscape in the Yucatán Peninsula, Mexico
Authors: Cortés-Arzola Silvia Ventura , León-Cortés Jorge L 
Published: April 2021

Abstract
Insect diversity levels and change in remnant urban habitats have been poorly examined in Neotropical regions. The aim of this study was to evaluate the diversity and composition of foliage/shrub dwelling beetles (Insecta: Coleoptera) regarding the influence of patch attributes (i.e., patch size, connectivity, and surrounding matrix) and within-patch habitat complexity, in an urban landscape at Chetumal, Yucatán peninsula, Mexico. Despite the potential species-specific responses to urban landscape pattern, our study reveals that there are effects of patch spatial features and habitat complexity on overall beetle diversity. These effects are as follows: 1) relatively larger urban patches contained higher overall beetle richness, 2) beetle species composition varied significantly regarding understory vegetation structure and tree richness, and 3) patches of intermediate vegetation age had highest beetle richness. This research provides a case study of patch and habitat features related to Neotropical insect assemblages in urban settlements, underlying the importance of using ecological information to offer management recommendations in ever-expanding urban tropical settlements.
Functional expression of the reverse transcriptase αβ heterodimer from avian myeloblastosis virus in Escherichia coli
Authors: Makino Yuriko , Sato Hiroshi , Noguchi Atsushi , Ide Teruhiko , Yatsunami Rie , Nakamura Satoshi 
Published: April 2021

ABSTRACT
The α subunit of avian myeloblastosis virus reverse transcriptase (AMV-RT) is generated from the β-subunit by proteolysis, and the αβ heterodimer represents the active form. The codon-optimized gene was expressed in Escherichia coli, and an active αβ heterodimer was generated. The RNA amplification activity of the purified recombinant AMV-RT αβ heterodimer was similar to that of the native one.
GEM: scalable and flexible gene–environment interaction analysis in millions of samples
Authors: Westerman Kenneth E , Pham Duy T , Hong Liang , Chen Ye , Sevilla-González Magdalena , Sung Yun Ju , Sun Yan V , Morrison Alanna C , Chen Han , Manning Alisa K 
Published: April 2021

Abstract

Motivation
Gene–environment interaction (GEI) studies are a general framework that can be used to identify genetic variants that modify the effects of environmental, physiological, lifestyle or treatment effects on complex traits. Moreover, accounting for GEIs can enhance our understanding of the genetic architecture of complex diseases and traits. However, commonly used statistical software programs for GEI studies are either not applicable to testing certain types of GEI hypotheses or have not been optimized for use in large samples.

Results
Here, we develop a new software program, GEM (Gene–Environment interaction analysis in Millions of samples), which supports the inclusion of multiple GEI terms, adjustment for GEI covariates and robust inference, while allowing multi-threading to reduce computation time. GEM can conduct GEI tests as well as joint tests of genetic main and interaction effects for both continuous and binary phenotypes. Through simulations, we demonstrate that GEM scales to millions of samples while addressing limitations of existing software programs. We additionally conduct a gene-sex interaction analysis on waist-hip ratio in 352 768 unrelated individuals from the UK Biobank, identifying 24 novel loci in the joint test that have not previously been reported in combined or sex-specific analyses. Our results demonstrate that GEM can facilitate the next generation of large-scale GEI studies and help advance our understanding of the genetic architecture of complex diseases and traits.

Availability and implementation
GEM is freely available as an open source project at https://github.com/large-scale-gxe-methods/GEM.

Supplementary information
Supplementary data are available at Bioinformatics online.
GAMIBHEAR: whole-genome haplotype reconstruction from Genome Architecture Mapping data
Authors: Markowski Julia , Kempfer Rieke , Kukalev Alexander , Irastorza-Azcarate Ibai , Loof Gesa , Kehr Birte , Pombo Ana , Rahmann Sven , Schwarz Roland F 
Published: April 2021

AbstractMotivationGenome Architecture Mapping (GAM) was recently introduced as a digestion- and ligation-free method to detect chromatin conformation. Orthogonal to existing approaches based on chromatin conformation capture (3C), GAM’s ability to capture both inter- and intra-chromosomal contacts from low amounts of input data makes it particularly well suited for allele-specific analyses in a clinical setting. Allele-specific analyses are powerful tools to investigate the effects of genetic variants on many cellular phenotypes including chromatin conformation, but require the haplotypes of the individuals under study to be known a priori. So far, however, no algorithm exists for haplotype reconstruction and phasing of genetic variants from GAM data, hindering the allele-specific analysis of chromatin contact points in non-model organisms or individuals with unknown haplotypes.ResultsWe present GAMIBHEAR, a tool for accurate haplotype reconstruction from GAM data. GAMIBHEAR aggregates allelic co-observation frequencies from GAM data and employs a GAM-specific probabilistic model of haplotype capture to optimize phasing accuracy. Using a hybrid mouse embryonic stem cell line with known haplotype structure as a benchmark dataset, we assess correctness and completeness of the reconstructed haplotypes, and demonstrate the power of GAMIBHEAR to infer accurate genome-wide haplotypes from GAM data.Availability and implementationGAMIBHEAR is available as an R package under the open-source GPL-2 license at https://bitbucket.org/schwarzlab/gamibhear.Supplementary informationSupplementary data are available at Bioinformatics online.
MicroCellClust: mining rare and highly specific subpopulations from single-cell expression data
Authors: Gerniers Alexander , Bricard Orian , Dupont Pierre 
Published: April 2021

AbstractMotivationIdentifying rare subpopulations of cells is a critical step in order to extract knowledge from single-cell expression data, especially when the available data is limited and rare subpopulations only contain a few cells. In this paper, we present a data mining method to identify small subpopulations of cells that present highly specific expression profiles. This objective is formalized as a constrained optimization problem that jointly identifies a small group of cells and a corresponding subset of specific genes. The proposed method extends the max-sum submatrix problem to yield genes that are, for instance, highly expressed inside a small number of cells, but have a low expression in the remaining ones.ResultsWe show through controlled experiments on scRNA-seq data that the MicroCellClust method achieves a high F1 score to identify rare subpopulations of artificially planted human T cells. The effectiveness of MicroCellClust is confirmed as it reveals a subpopulation of CD4 T cells with a specific phenotype from breast cancer samples, and a subpopulation linked to a specific stage in the cell cycle from breast cancer samples as well. Finally, three rare subpopulations in mouse embryonic stem cells are also identified with MicroCellClust. These results illustrate the proposed method outperforms typical alternatives at identifying small subsets of cells with highly specific expression profiles.Availabilityand implementationThe R and Scala implementation of MicroCellClust is freely available on GitHub, at https://github.com/agerniers/MicroCellClust/ The data underlying this article are available on Zenodo, at https://dx.doi.org/10.5281/zenodo.4580332.Supplementary informationSupplementary data are available at Bioinformatics online.