bluuebunny/crossref_metadata_2025_split huggingface dataset:
Kombinasi rumput laut (Eucheuma cottonii) dan kerang hijau (Perna viridis) sebagai biofilter logam berat timbal (Pb)
Authors: Mayori Dian Viva Aurora , Rahardja Boedi Setya , Suciyono Suciyono , Lutfiyah Lailatul 
Published: March 2021

The rapid development of the industry in the coastal region has increased the concentration of heavy metals in waters. Furthermore, efforts to improve water quality in reducing the concentration of these metals are biofilter. The biofilter used in this study was a combination of E. cottonii and P. viridis. The study used Complete Random Design (CRD), with 4 treatments 5 replications. Pb heavy metal content testing uses AAS (Atomic Absorption Spectrophotometer). The results showed that the best treatment was in P2 (p 0.05), with the combination of E. cottonii and P. viridis at 62.50 and 225 g. The effectiveness of Pb heavy metal uptake is influenced by the density of E. cottoni, but inversely proportional to the density of P. viridis. Furthermore, in high stocking densities, E. cottonii is more effective in absorbing heavy metals than P. viridis.Keywords: E. cottonii, P. viridis, Biofilter, lead (Pb) ABSTRAKPesatnya perkembangan industri di wilayah pesisir merupakan salah satu penyebab meningkatnya konsentrasi logam berat dalam perairan. Salah satu upaya dalam perbaikan kualitas air dalam menurunkan konsentrasi logam tersebut adalah dengan biofilter. Biofilter yang digunakan pada penelitian ini yaitu kombinasi E. cottonii dan P. viridis. Penelitian menggunakan Racangan Acak Lengkap (RAL), dengan 4 perlakuan 5 ulangan. Pengujian kandungan logam berat Pb menggunakan AAS (Atomic Absorption Spectrophotometer). Hasil penelitian menunjukkan bahwa perlakuan terbaik terdapat pada P2 (p 0.05), dengan kombinasi E. cottonii dan P. viridis sebesar 62,50 dan 225 g. Efektifitas penyerapan logam berat Pb dipengaruhi oleh kepadatan E. cottoni, akan tetapi berbanding terbalik dengan kepadatan P. viridis. Selanjutnya, dalam padat tebar yang tinggi, E. cottonii lebih efektif dalam menyerap logam berat dibandingkan P. viridis.Kata kunci: E. cottonii, P. viridis, Biofilter, Timbal (Pb)
Pengaruh laju sedimentasi terhadap tutupan terumbu karang di perairan Kota Daruba, Kabupaten Pulau Morotai
Authors: Koroy Kismanto , Alwi Djainudin , Paraisu Novaldo Geri 
Published: March 2021

The coral reef is one of the invertebrate animals that inhabit the marine ecosystem with various aquatic biota. Physical environmental factors including sedimentation, strongly influence coral growth. This study aimed to analyze the percentage of coral cover and the sediment rates in the reclamation area of Daruba City, Morotai Island Regency. This research was carried out in November 2019 using the LIT method to calculate the percentage of coral cover and sediment trap to retrieve sedimentation data. The sediment trap was placed in the bottom waters for 14 days. Stratified filtering was used to separate the sediment, and analytical scales were used to measure dry sediment weight in grams. Sediment sample testing was conducted in the laboratory of the Faculty of Fisheries and Marine Sciences, Khairun University, Ternate. Measurement data were analyzed to calculate the percentage of coral cover and sediment rate analysis. The analysis showed that the percentage of live coral cover was in the range of 10.8 - 20.52%, this value indicates the condition of coral reefs in the waters of the village of Daruba and the waters of the reclaimed development area of the city of Daruba were in the poor category. Sedimentation rate in the reclamation area of the city of Daruba were 307,34 - 492,27 (g /cm2 /day).Keywords: Cover the reef, The rate of sediment, Morotai ABSTRAKTerumbu karang merupakan salah satu hewan avertebrata yang mendiami ekosistem dengan berbagai biota perairan. Pertumbuhan karang sangat dipengaruhi oleh faktor fisik lingkungan, salah satunya adalah sedimen. Tujuan penelitian ini yaitu menganalisis persentase tutupan karang dan menganalisis laju sedimen di area reklamasi kota Daruba Kabupaten Pulau Morotai. Penelitian ini dilakukan pada bulan November 2019 dengan menggunakan metode (LIT) untuk menghitung persentase tutupan karang dan pengambilan data sedimen menggunakan alat sediment trap yang ditempatkan di dasar perairan selama 14 hari. Selanjutnya dilakukan penyaringan bertingkat dan pengukuran berat kering sedimen dalam satuan gram dengan timbangan analitik. Pengujian sampel sedimen dilakukan di laboratorium Fakultas Perikanan dan Ilmu Kelautan Universitas Khairun Ternate. Data pengukuran dianalisis untuk menghitung persentase tutupan karang, dan analisis laju sedimen. Hasil analisis menunjukan persentase tutupan karang hidup berada pada kisaran 10,8 - 20,52%, nilai tersebut menunjukan kondisi terumbu karang di perairan desa Daruba dan area perairan pembangunan reklamasi kota Daruba termasuk dalam kategori buruk. Laju sedimentasi di perairan area reklamasi kota Daruba sebesar 307,34 - 492,27 (g/cm2/hari).Kata kunci: Tutupan karang, Laju sedimen, Morotai
Controlled carrier mean free path for the enhanced efficiency of
III-nitride deep-ultraviolet light-emitting diodes
Authors: Jain Barsha , Velpula Ravi Teja , Patel Moulik , Nguyen Hieu Pham Trung 
Published: March 2021

Electron overflow from the active region confines the AlGaN
deep-ultraviolet (UV) light-emitting diode (LED) performance. This
paper proposes a novel approach to mitigate the electron leakage
problem in AlGaN deep-UV LEDs using concave quantum barrier (QB)
structures. The proposed QBs suppress the electron leakage by
significantly reducing the electron mean free path that improves the
electron capturing capability in the active region. Overall, such an
engineered structure also enhances the hole injection into the active
region, thereby enhancing the radiative recombination in the quantum
wells. As a result, our study shows that the proposed structure
exhibits an optical power of 9.16 mW at

∼

284

n
m

wavelength, which is boosted by

∼

40.5

%

compared to conventional AlGaN UV LED
operating at 60 mA injection current.
Optic-fiber vibration sensor based on a reflected 81° tilted fiber grating integrated with a symmetrical flexible hinge
Authors: Liu Kaijun , Luo Binbin , Zou Xue , Deng Ou , Wang Zhihua , Wu Decao , Zou Xianglong , Fan Junhao , Wu Taojiang , Zhao Mingfu 
Published: March 2021

An optic-fiber vibration sensor based on the reflected 81° tilted fiber grating (81° TFG) integrated with a symmetrical flexible hinge is proposed and experimentally demonstrated in this paper. The vibration sensor is composed of a symmetrical flexible hinge and a reflected 81° TFG, the ends of which are simply fixed on the upper surface of the mass. The theoretical model of the proposed vibration sensor is analyzed, by which the important parameters related to the resonant frequency of the sensor are simulated and discussed; then, the vibration sensing experiments are conducted. Experiment results show that TE/TM mode of the 81° TFG can provide the maximal acceleration sensitivity of 338.28 and 299.94 mV/g at 400 Hz in the flat area of the amplitude-frequency response (50–400 Hz), which is increased by 9.95 and 11.5 times as compared with the optical fiber cantilever beam structure, respectively. Further, the signal-to-noise ratio in the flat area (50–400 Hz) is about

∼

66.275

d
B

under the acceleration of 2 g, which is increased by

∼

20

d
B

. Furthermore, it can be used for detecting mechanical vibration of medium-high frequency ranging from 50 to 3500 Hz. The proposed 81° TFG vibration sensor has the characteristics of small volume, simple package, high acceleration sensitivity, and wide vibration signal response range, which will ensure it has broad application prospects in the field of mechanical vibration.
Patterns and risk factors of opioid-suspected EMS overdose in Houston metropolitan area, 2015-2019: A Bayesian spatiotemporal analysis
Authors: Bauer Cici , Champagne-Langabeer Tiffany , Bakos-Block Christine , Zhang Kehe , Persse David , Langabeer James R. 
Published: March 2021

BackgroundOpioid-related overdose deaths are the top accidental cause of death in the United States, and development of regional strategies to address this epidemic should begin with a better understanding of where and when overdoses are occurring.Methods and findingsIn this study, we relied on emergency medical services data to investigate the geographical and temporal patterns in opioid-suspected overdose incidents in one of the largest and most ethnically diverse metropolitan areas (Houston Texas). Using a cross sectional design and Bayesian spatiotemporal models, we identified zip code areas with excessive opioid-suspected incidents, and assessed how the incidence risks were associated with zip code level socioeconomic characteristics. Our analysis suggested that opioid-suspected overdose incidents were particularly high in multiple zip codes, primarily south and central within the city. Zip codes with high percentage of renters had higher overdose relative risk (RR = 1.03; 95% CI: [1.01, 1.04]), while crowded housing and larger proportion of white citizens had lower relative risks (RR = 0.9; 95% CI: [0.84, 0.96], RR = 0.97, 95% CI: [0.95, 0.99], respectively).ConclusionsOur analysis illustrated the utility of Bayesian spatiotemporal models in assisting the development of targeted community strategies for local prevention and harm reduction efforts.
‘A double-edged sword’: Perceived benefits and harms of active case-finding for people with presumptive tuberculosis and communities—A qualitative study based on expert interviews
Authors: Biermann Olivia , Klüppelberg Raina , Lönnroth Knut , Viney Kerri , Caws Maxine , Atkins Salla 
Published: March 2021

Background
Active case-finding (ACF), also referred to as community-based tuberculosis screening, is a component of the World Health Organization’s End TB Strategy. ACF has potential benefits but also harms, which need to be carefully assessed when developing and implementing ACF policies. While empirical evidence on the benefits of ACF is still weak, evidence on the harms is even weaker. This study aimed to explore experts’ views on the benefits and harms of ACF for people with presumptive TB and communities.

Methods
This was an exploratory study. Semi-structured interviews were conducted with a purposive sample of 39 experts from international, non-governmental/non-profit organizations, funders, government institutions, international societies, think tanks, universities and research institutions worldwide. Framework analysis was applied.

Results
Findings elaborated perceived benefits of ACF, including reaching vulnerable populations, reducing patient costs, helping raise awareness for tuberculosis among individuals and engaging communities, and reducing tuberculosis transmission. Perceived harms included increasing stigma and discrimination, causing false-positive diagnoses, as well as triggering other unintended consequences related to screening for tuberculosis patients, such as deportation of migrants once confirmed to have tuberculosis. Most of the perceived benefits of ACF could be linked to its objective of finding and treating persons with tuberculosis early (theme 1), while ACF was also perceived as a “double-edged sword” and could cause harms, if inappropriately designed and implemented (theme 2). The analysis underlined the importance of considering the benefits and harms of ACF throughout the screening pathway. The study provides new insights into the perceived benefits and harms of ACF from the perspectives of experts in the field.

Conclusion
This study highlights gaps in the evidence base surrounding ACF and can stimulate further research, debate and analysis regarding the benefits and harms of ACF to inform contextual optimization of design and implementation of ACF strategies.
Factor structure of the SDQ and longitudinal associations from pre-school to pre-teen in New Zealand
Authors: Thompson John M. D. , Slykerman Rebecca F. , Wall Clare R. , Murphy Rinki , Mitchell Edwin A. , Waldie Karen E. 
Published: March 2021

Objective
The objective of this study was to assess the validity of the Strengths and Difficulties Questionnaire in a cohort of New Zealand children followed from birth to the age of eleven. The study also aimed to assess the stability of the child data in relation to behavioural outcomes during this period.

Methods
Children in the Auckland Birthweight Collaborative Study were assessed at approximately 3½, 7 and 11 years of age. At all time-points parents completed the parent version of the Strengths and Difficulties Questionnaire, and the children themselves completed the self-report version at 11 years of age. The validity and internal consistency were assessed using exploratory factor analysis, Cronbach’s alpha, and McDonald’s Omega. Cross tabulations and Chi-square statistics were used to determine whether Total Difficulty scores, as per accepted cut-offs, remained stable over time (between normal and abnormal/borderline categories).

Results
The factor structure remained relatively consistent across all three time-points, though several questions did not load as per the originally published factor analysis at the earliest age. The internal consistency of the Strengths and Difficulties Questionnaire was good at all time-points and for parent- and child-completed versions. There was low agreement in the total scores between time points.

Conclusions
The factor analysis shows that the Strengths and Difficulties Questionnaire has a similar factor structure, particularly in older ages, to that previously published and shows good internal consistency. At the pre-school follow up, a larger than expected proportion of children were identified with high scores, particularly in the conduct sub-scale. Children’s behaviour changes over time, with only poor to moderate agreement between those identified as abnormal or borderline over the longitudinal follow up.
Costs of cancer attributable to excess body weight in the Brazilian public health system in 2018
Authors: Corrêa Ferreira da Silva Ronaldo , Bahia Luciana Ribeiro , Machado da Rosa Michelle Quarti , Malhão Thainá Alves , Mendonça Eliane De Paula , Rosa Roger dos Santos , Araújo Denizar Vianna , Maya Moreira Luciana Grucci , Schilithz Arthur Orlando Correa , Diogenes Melo Maria Eduarda Leão 
Published: March 2021

ObjectivesThe prevalence of excess body weight (EBW) has increased over the last decades in Brazil, where 55.4% of the adult population was overweight in 2019. EBW is a well-known risk factor for several types of cancer. We estimated the federal cost of EBW-related cancers in adults, considering the medical expenditures in the Brazilian Public Health System.MethodsWe calculated the costs related to 11 types of cancer considering the procedures performed in 2018 by all organizations that provide cancer care in the public health system. We obtained data from the Hospital and Ambulatory Information Systems of the Brazilian Public Health System. We calculated the fractions of cancer attributable to EBW using the relative risks from the literature and prevalence from a nationally representative survey. We converted the monetary values in Reais (R$) to international dollars (Int$), considering the purchasing power parity (PPP) of 2018.ResultsIn Brazil, the 2018 federal cost for all types of cancers combined was Int$ 1.73 billion, of which nearly Int$ 710 million was spent on EBW-related cancer care and Int$ 30 million was attributable to EBW. Outpatient and inpatient expenditures reached Int$ 20.41 million (of which 80% was for chemotherapy) and Int$ 10.06 million (of which 82% was for surgery), respectively. Approximately 80% of EBW-attributable costs were due to breast, endometrial and colorectal cancers.ConclusionA total of 1.76% of all federal cancer-related costs could be associated with EBW, representing a substantial economic burden for the public health system. We highlight the need for integrated policies for excess body weight control and cancer prevention.
Serological markers and risk factors associated with Hepatitis B virus infection among Federal Capital Territory prison inmates, Nigeria: Should we be concerned?
Authors: Dan-Nwafor Chioma Cindy , Adeoye Ikeola , Aderemi Kehinde , Onuoha Martins , Adedire Elizabeth , Bashorun Adebobola , Osunkwo Damaris , Gidado Saheed , Balogun Muhammad , Idris Suleiman , Ade-Yusuf Ibrahim , Udom Ekpedeme , Nguku Patrick 
Published: March 2021

Introduction
Hepatitis B virus (HBV) infection is hyper-endemic in Nigeria. Prisons are high-risk environments for the spread of infectious diseases. Worldwide, seroprevalence of HBV infection is substantially higher among individuals in correctional facilities when compared to general population. We determined the seroprevalence and risk factors associated with HBV infection among Kuje prison inmates, Nigeria.

Material and methods
We conducted a prison facility based cross-sectional study. Interviewer administered questionnaires were used to obtain information on participants socio-demographic characteristics, HBV risk factors, previous HBV test and vaccination history. Blood samples collected from participants were analysed for HBsAg, HBsAb, HBcAb, HBeAg and HBeAb markers using rapid lateral chromatographic immunoassay kit. Univariate, bivariate, and multivariate analysis were performed.

Results
A total of 271 inmates (63 convicts and 208 awaiting trial inmates) were recruited into the study as participants. The mean age of the participants was 32.7 SD±9 years. HBV seroprevalence (HBsAg) of 13.7% (95% CI: 9.8–18.3) was found. 55.4% (95% CI: 49.2–61.4) of inmates were susceptible to HBV infection, 20.7% (95%CI; 16.0–26.0) had past HBV infection while 10.3% (95% CI: 7.0–14.6) had acquired natural or artificial HBV immunity. Factors found to be associated with current HBV infection (HBsAg) include age-group ≤25years (aOR = 8.0,95% CI: 2.9–22.3), being ever married (aOR = 4.2, 95% CI: 1.7–10.4) and history of alcohol consumption (aOR = 3.4, 95% CI: 1.3–8.4).

Conclusion
This study reveals a high seroprevalence of HBV infection among Kuje Prison inmates, hence the need to introduce prison-focused health intervention initiatives such as HBV screening, vaccination and care to reduce the transmission of HBV infection among inmates and ultimately the general population.
Identification of two novel hepatitis C virus subtype 2 from Tunisia (2v and 2w)
Authors: Rajhi Mouna , Haddad-Boubaker Sondes , Chouikha Anissa , Bourquain Daniel , Michel Janine , Hammami Walid , Sadraoui Amel , Touzi Hinda , Ghedira Kais , Triki Henda 
Published: March 2021

Background
Hepatitis C virus (HCV) has a high genetic diversity. Eight genotypes and 90 subtypes are currently described. Genotypes are clinically significant for therapeutic management and their determination is necessary for epidemiological studies.

Methods
Tunisian patients plasma samples (n = 6) with unassigned HCV-2 subtype using partial sequencing in the NS5B and Core/E1 regions were analyzed by realizing whole-genome sequencing analysis. Phylogenetic analyses were performed to assign subtypes.

Results
Phylogenetic analysis of the full genome sequences of Tunisian strains shows two subtypes within HCV-2. These later were genetically distinct from all previously established HCV-2 subtypes with nucleotide divergence greater than 15% (20% -31%). These two subtypes are proposed as new subtypes 2v and 2w.

Conclusions
The discovery of two new HCV-2 subtypes circulating in the Tunisian population confirms the great diversity of HCV-2 viruses and increases the total number of HCV-2 subtypes from 21 to 23.
Hardy–Adams Inequalities on ℍ2 × ℝ
n-2
Authors: Ma Xing , Wang Xumin , Yang Qiaohua 
Published: March 2021

Abstract
Let

ℍ
2

{\mathbb{H}^{2}}

be the hyperbolic space of dimension 2. Denote by

M
n

=

ℍ
2

×

ℝ

n
-
2

{M^{n}=\mathbb{H}^{2}\times\mathbb{R}^{n-2}}

the product manifold of

ℍ
2

{\mathbb{H}^{2}}

and

ℝ

n
-
2

(
n
≥
3
)

{\mathbb{R}^{n-2}(n\geq 3)}

. In this paper we establish some sharp Hardy–Adams inequalities on

M
n

{M^{n}}

, though

M
n

{M^{n}}

is not with strictly negative sectional curvature. We also show that the sharp constant in the Poincaré–Sobolev inequality on

M
n

{M^{n}}

coincides with the best Sobolev constant, which is of independent interest.
Constructional associations trump lexical associations in processing valency coercion
Authors: Busso Lucia , Perek Florent , Lenci Alessandro 
Published: March 2021

AbstractThe paper investigates the interaction of lexical and constructional meaning in valency coercion processing, and the effect of (in)compatibility between verb and construction for its successful resolution (Perek, Florent & Martin Hilpert. 2014. Constructional tolerance: Cross-linguistic differences in the acceptability of non-conventional uses of constructions.Constructions and Frames6(2). 266–304; Yoon, Soyeon. 2019. Coercion and language change: A usage-based approach.Linguistic Research36(1). 111–139). We present an online experiment on valency coercion (the first one on Italian), by means of a semantic priming protocol inspired by Johnson, Matt A. & Adele E. Goldberg. 2013. Evidence for automatic accessing of constructional meaning: Jabberwocky sentences prime associated verbs.Language & Cognitive Processes28(10). 1439–1452. We test priming effects with a lexical decision task which presents different target verbs preceded by coercion instances of four Italian argument structure constructions, which serve as primes. Three types of verbs serve as target: lexical associate (LA), construction associate (CA), and unrelated (U) verbs. LAs are semantically similar to the main verb of the prime sentence, whereas CAs are prototypical verbs associated to the prime construction. U verbs serve as a mean of comparison for the two categories of interest. Results confirm that processing of valency coercion requires an integration of both lexical and constructional semantics. Moreover, compatibility is also found to influence coercion resolution. Specifically, constructional priming is primary and independent from compatibility. A secondary priming effect for LA verbs is also found, which suggests a contribution of lexical semantics in coercion resolution – especially for low-compatibility coercion coinages.
Fuzzy Rank Based Parallel Online Feature Selection Method using Multiple Sliding Windows
Authors: Venkatesh B. , Anuradha J. 
Published: March 2021

Abstract
Nowadays, in real-world applications, the dimensions of data are generated dynamically, and the traditional batch feature selection methods are not suitable for streaming data. So, online streaming feature selection methods gained more attention but the existing methods had demerits like low classification accuracy, fails to avoid redundant and irrelevant features, and a higher number of features selected. In this paper, we propose a parallel online feature selection method using multiple sliding-windows and fuzzy fast-mRMR feature selection analysis, which is used for selecting minimum redundant and maximum relevant features, and also overcomes the drawbacks of existing online streaming feature selection methods. To increase the performance speed of the proposed method parallel processing is used. To evaluate the performance of the proposed online feature selection method k-NN, SVM, and Decision Tree Classifiers are used and compared against the state-of-the-art online feature selection methods. Evaluation metrics like Accuracy, Precision, Recall, F1-Score are used on benchmark datasets for performance analysis. From the experimental analysis, it is proved that the proposed method has achieved more than 95% accuracy for most of the datasets and performs well over other existing online streaming feature selection methods and also, overcomes the drawbacks of the existing methods.