bluuebunny/crossref_metadata_2025_split huggingface dataset:
Extraction and Determination of Nickel (Ii) Via Cloud Point Method
Authors: A.Wannas Fatimah , K.Jawad Shawket 
Published: April 2019

Spectrophotometric study for ion pair complex of Ni(II) ion extracted into cloud point extraction larger appear wave length of maximum absorbance was λ=660 nm, for extracted Ni(II) ion as ion pair association ,used laboratory synthesized azo derivative 2-(4-hydroxy phenyl azo)-4-Benzen naphthol(HPAB).The study about Determination the optimum condition for extraction and determination was pH =10 in presence 100 µg Ni(II) in 10 ml aqueous solution ,0.6 mL of Triton x-114 and temperature of heating was 70 c° at heating time equal to 30 minute, stoichiometry shows the ion pair complex extracted was 1:1 (Ni-HPAB) +2;2Cl_, in addition to electrolyte effect study as well as spectrophotometric determination of Ni(II) in different samples .
Mathematical Analysis of Microstrip Diplexer Design for WLAN System
Authors: S. Mezaal Yaqeen , K. Khaleel Shahad 
Published: April 2019

Miniature microstrip diplexer at band frequencies of (1.45/1.95GHz and 2.5/3.5GHz) in two considered channels using the coupled stepped impedance resonators (SIRs) has been presented in this study with mathematical analysis. This diplexer has dual pairs of coupled SIRs with impedance ratio and the source-load coupling lines. As a result of the tuning of impedance ratio and length ratio of SIRs, the resonant modes are possibly determined to achieve 2nd order bandpass filter (BPF) with dualband frequency responses for the investigated diplexer. The investigated microstrip diplexer has a simple outline, compact dimensions, an in effect design technique and straightforward calculations of impedance, electrical lengths, fractional bandwidth, coupling factors and other electrical specifications.
Effective bounds for the Andrews spt-function
Authors: Locus Dawsey Madeline , Masri Riad 
Published: April 2019

Abstract
In this paper, we establish an asymptotic formula with an effective bound on the error term for
the Andrews smallest parts function

spt
⁢

(
n
)

{{\mathrm{spt}}(n)}

. We use this formula to prove recent conjectures
of Chen concerning inequalities which involve the partition function

p
⁢

(
n
)

{p(n)}

and

spt
⁢

(
n
)

{{\mathrm{spt}}(n)}

.
Further, we strengthen one of the conjectures, and prove that for every

ϵ
>
0

{\epsilon>0}

there is an effectively computable constant

N
⁢

(
ϵ
)

>
0

{N(\epsilon)>0}

such that for all

n
≥

N
⁢

(
ϵ
)

{n\geq N(\epsilon)}

, we have

6

π

⁢

n

⁢
p
⁢

(
n
)

<

spt
⁢

(
n
)

<

(

6

π

+
ϵ

)

⁢

n

⁢
p
⁢

(
n
)

.

\frac{\sqrt{6}}{\pi}\sqrt{n}\,p(n)<{\mathrm{spt}}(n)<\bigg{(}\frac{\sqrt{6}}{%
\pi}+\epsilon\bigg{)}\sqrt{n}\,p(n).

Due to the conditional convergence of the Rademacher-type formula for

spt
⁢

(
n
)

{{\mathrm{spt}}(n)}

, we must employ methods which are completely
different from those used by Lehmer to give effective error bounds for

p
⁢

(
n
)

{p(n)}

. Instead, our approach relies on
the fact that

p
⁢

(
n
)

{p(n)}

and

spt
⁢

(
n
)

{{\mathrm{spt}}(n)}

can be expressed as traces of singular moduli.
Secure Fingerprint Authentication Using Deep Learning and Minutiae Verification
Authors: Praseetha V.M. , Bayezeed Saad , Vadivel S. 
Published: April 2019

Abstract
Nowadays, there has been an increase in security concerns regarding fingerprint biometrics. This problem arises due to technological advancements in bypassing and hacking methodologies. This has sparked the need for a more secure platform for identification. In this paper, we have used a deep Convolutional Neural Network as a pre-verification filter to filter out bad or malicious fingerprints. As deep learning allows the system to be more accurate at detecting and reducing false identification by training itself again and again with test samples, the proposed method improves the security and accuracy by multiple folds. The implementation of a novel secure fingerprint verification platform that takes the optical image of a fingerprint as input is explained in this paper. The given input is pre-verified using Google’s pre-trained inception model for deep learning applications, and then passed through a minutia-based algorithm for user authentication. Then, the results are compared with existing models.
Pola Distribusi Aboveground Biomass Kawasan Hutan Mangrove Peniti Kalimantan Barat
Authors: Rafdinal Rafdinal , Rizalinda Rizalinda , Minsas Sukal 
Published: April 2019

This study aims to analyze the distribution pattern of aboveground biomass (AGB) in the mangrove ecosystem of West Kalimantan Safety. In addition, it also analyzes the differences in biomass and carbon stocks in the condition of mangrove forests. The study of the distribution pattern of AGB of mangrove forests was carried out between August and September 2018. Determination of the location of the study was based on a conceptual approach in the dimensions of spatial temporal that is using the Porposive Random Sampling method. Vegetation analysis was carried out by a single plot measuring 50 m x 50 m at each selected location. Based on vegetation analysis data it was found that the density of mangrove stands on the Peniti coast ranged from 38 to 185 ind /ha, with an average of 88.25 ± 66.15 ind./ Ha. The AGB of pinch mangrove forests ranged from 8.85 to 84.82 Mg / ha with the largest total AGB distributed in the stand diameter class of more than 80 cm.

Penelitian ini bertujuan untuk menganalisis pola distribusi aboveground biomass (AGB) pada ekosistem mangrove Peniti Kalimantan Barat. Selain itu juga untuk menganalisis perbedaan biomassa, dan cadangan karbon pada kondisi hutan mangrove. Kajian pola distribusi AGB hutan mangrove Peniti dilakukan antara bulan Agustus dan September 2018. Penentuan lokasi penelitian didasarkan pada pendekatan konseptual dalam dimensi spasio temporal yaitu menggunakan metode Porposive Random Sampling. Analisis vegetasi dilakukan dengan metode petak tunggal berukuran 50 m x 50 m pada setiap lokasi terpilih. Berdasarkan data analisis vegetasi didapatkan bahwa kerapatan tegakan mangrove di pesisir Peniti berkisar antara 38 sampai 185 ind/ha, dengan rata-rata 88,25±66,15 ind./ha. AGB tegakan hutan mangrove Peniti berkisar antara 8,85 sampai 84,82 Mg/ha dengan total AGB terbesar terdistribusi pada kelas diameter tegakan lebih dari 80 cm.
Genome-Wide Analyses Reveal Footprints of Divergent Selection and Drought Adaptive Traits in Synthetic-Derived Wheats
Authors: Afzal Fakiha , Li Huihui , Gul Alvina , Subhani Abid , Ali Ahmad , Mujeeb-Kazi Abdul , Ogbonnaya Francis , Trethowan Richard , Xia Xianchun , He Zhonghu , Rasheed Awais 
Published: April 2019

Abstract
Crop-wild introgressions have long been exploited without knowing the favorable recombination points. Synthetic hexaploid wheats are one of the most exploited genetic resources for bread wheat improvement. However, despite some QTL with major effects, much less is known about genome-wide patterns of introgressions and their effects on phenotypes. We used two genome-wide association approaches: SNP-GWAS and haplotype-GWAS to identify SNPs and haplotypes associated with productivity under water-limited conditions in a synthetic-derived wheat (SYN-DER) population. Haplotype-GWAS further enriched and identified 20 more genomic regions associated with drought adaptability that did not overlap with SNP-GWAS. Since GWAS is biased to the phenotypes in the study and may fail to detect important genetic diversity during breeding, we used five complementary analytical approaches (t-test, Tajima’s D, nucleotide diversity (π), Fst, and EigenGWAS) to identify divergent selections in SYN-DER compared to modern bread wheat. These approaches consistently pinpointed 89 ‘selective sweeps’, out of which 30 selection loci were identified on D-genome. These key selections co-localized with important functional genes of adaptive traits such as TaElf3-D1 (1D) for earliness per se (Eps), TaCKX-D1 (3D), TaGS1a (6D) and TaGS-D1 (7D) for grain size, weight and morphology, TaCwi-D1 (5D) influencing drought tolerance, and Vrn-D3 (7D) for vernalization. Furthermore, 55 SNPs and 23 haplotypes of agronomic and physiological importance such as grain yield, relative water content and thousand grain weight in SYN-DER, were among the top 5% of divergent selections contributed by synthetic hexaploid wheats. These divergent selections associated with improved agronomic performance carry new alleles that have been introduced to wheat. Our results demonstrated that GWAS and selection sweep analyses are powerful approaches for investigating favorable introgressions under strong selection pressure and the use of crop-wild hybridization to assist the improvement of wheat yield and productivity under moisture limiting environments.
Tocilizumab: Efficacy and Tolerance in Rheumatoid Arthritis in Current Practice
Authors: Akasbi Nessrine , Mounir Amina , Omboumahou Bakale Francina Eddie , El Fakir Samira , Harzy Taoufik 
Published: April 2019

Introduction: The aim of this study was to evaluate in “real life” the efficacy and the tolerance of Tocilizumab (TCZ) in the treatment of rheumatoid arthritis (RA).Materials and methods: A cross-sectional study including patients with RA patients treated with TCZ at the commended dose of 8 mg/kg/ 4 weeks. The therapeutic response was evaluated by the EULAR DAS 28 ‐CRP/ VS at month 3 and month 6 of treatment.Results: RA was in most cases severe (76,5 %), seropositive (88,2 %) and erosive (81,3 %). TCZ was prescribed as an alternative to a previous biotherapy in 23 % of the patients and in monotherapy in 76, 5 % of the patients. After treatment follow-up at 3 and 6 months, the different parameters observed were significantly improved including: VAS (visual analogue scale) pain (p=0,000), CRP (mg/L) p=0,000), ESR (mmH1) (p=0,000), DAS 28 CRP (p=0,000), and DAS 28 ESR (p=0,000). Apart from a worsening of renal function in a patient contraindicated continuation of tocilizumab, no serious side effects were noted.Conclusion: Our study confirmed the efficacy and tolerance of TCZ therapy in Moroccan patients suffering from RA.Keywords: rheumatoid arthritis, tocilizumab, efficacy, tolerance
Rare earth elements, U and Th in tunnel dusts of São Paulo city, Brazil
Authors: Nory Renata Mendes , Figueiredo Ana Maria Graciano 
Published: April 2019

São Paulo is one of the most populated cities in the world, with about 20 million inhabitants in its metropolitan area, more than 12 million motor vehicles and intense industrial activity. Given its importance as a major urban center in South America and the lack of information concerning urban dust composition, the present study aimed to determine rare earth elements (REEs), U and Th mass fractions in tunnel dust, collected in the Jânio Quadros Tunnel, and to assess their possible sources. The study of REEs distribution in urban environments has become of interest over the last decades, due to the increasing industrial use of these elements. The REEs, that are as common as the most familiar metals, are found in metallurgical additives, fluid cracking catalysts and automobile converter catalysts, among other applications. In this study, which employed Instrumental Neutron Activation Analysis (INAA) as analytical technique, the mass fractions of eight REEs were determined and normalized to the chondrite concentration values. The results showed that major concentrations were found for light REEs, following the sequence Ce > La > Nd > Sm > Yb > Eu > Tb > Lu. The pattern of the results pointed to a natural origin for these elements. Regarding U and Th concentrations, the results varied between 1.0 – 9.4 µg g-1 and 3.3 – 35.9 µg g-1, respectively. Since there is almost no information about the concentration of these elements in this kind of matrix in São Paulo city, these data are important to support further investigations.
Determination of uranium in tree bark samples by epithermal neutron activation analysis
Authors: Pereira de Lima Nicole , Saiki Mitiko 
Published: April 2019

In this study uranium (U) concentrations were determined in certified reference materials (CRMs) and in tree bark samples collected in “Cidade Universitária Armando de Salles Oliveira” (CUASO) USP, São Paulo. The barks were collected from different species namely Poincianella pluviosa and Tipuana tipu. These bark samples were cleaned, dried, grated and milled for the analyses by epithermal neutron activation analysis method (ENAA). This method consists on irradiating samples and U standard in IEA-R1 nuclear reactor with thermal neutron flux of 1.9 x 1012 n cm-2 s-1 during 40 to 60 seconds depending on the samples’ matrices. The samples and standard were measured by gamma ray spectroscopy. U was identified by the peak of 74.66 keV of 239U with half life of 23.47 minutes. Concentration of U was calculated by comparative method. For analytical quality control of U results, certified reference materials were analyzed. Results obtained for CRMs presented good precision and accuracy, with |Z score| ≤ 0.39. Uranium concentrations in tree barks varied from 83.1 to 627.6 ng g-1 and the relative standard deviations of these results ranged from 1.8 to 10 %.
Feasibility studies of using thin entrance window photodiodes for clinical electron beam dosimetry
Authors: Nascimento Cristina R. , Asfora Viviane K. , Barros Vinicius R. M. , Gonçalves Josemary A. C. , Andrade Luiza F. R. , Khoury Helen J. , Bueno Carmen C. 
Published: April 2019

The response of the commercial XRA-24 PIN photodiode (5.76 mm2 active area) for clinical electron beam dosimetry covering the range of 8-12 MeV was investigated. Within this energy range, the charge generated in the diode’s sensitive volume is linearly dependent on the absorbed dose up to 320 cGy. However, charge sensitivity coefficients evidenced that the dose response of the diode is slightly dependent on the electron beam energy. Indeed, the diode’s energy dependence was within 8.5% for 8-12MeV electron beams. On the other hand, it was also observed an excellent repeatability of these results with a variation coefficient (VC) lower than 0.4%, which is within the 1% tolerance limit recommended by the AAPM TG-62. Furthermore, the agreement between the percentage depth dose profiles (PDD) gathered with the diode and the ionization chamber allowed achieving the electron beam quality within 1% of that obtained with the ionization chamber. Based on these results, the photodiode XRA-24 can be a reliable and inexpensive alternative for electron beams dosimetry.
Upgrading safety systems of industrial irradiation facilities
Authors: Gomes Rogerio Dos Santos , Gomes Joana D'Arc Ramos Lopes , Da Costa Evaldo Luiz Correa , Costa Mara Lucia De Lara , Thomé Filho Zieli Dutra 
Published: April 2019

The first industrial irradiation facility in operation in Brazil was designed in the 70s. Nowadays, twelve commercial and research facilities are in operation and two already decommissioned. Minor modifications and upgrades, as sensors replacement, have been introduced in these facilities, in order to reduce the technological gap in the control and safety systems. The safety systems are designed in agreement with the codes and standards at the time. Since then, new standards, codes and recommendations, as well as lessons learned from accidents, have been issued by various international committees or regulatory bodies. The rapid advance of the industry makes the safety equipment used in the original construction become obsolete. The decreasing demand for these older products means that they are no longer produced, which can make it impossible or costly to obtain spare parts and the expansion of legacy systems to include new features. This work aims to evaluate existing safety systems at Brazilian irradiation facilities, mainly the oldest facilities, taking into account the recommended IAEA´s design requirements. Irrespective of the fact that during its operational period no event with victims have been recorded in Brazilian facilities, and that the regulatory inspections do not present any serious deviations regarding the safety procedures, it is necessary an assessment of safety system with the purpose of bringing their systems to "the state of the art", avoiding their rapid obsolescence. This study has also taken into account the knowledge, concepts and solutions developed to upgrading safety system in irradiation facilities throughout the world.
Evaluation of gastric emptying by means of scintigra-phy using different test meals
Authors: Montoya Viviana , Parisitto Viviane , Fontes Mateus , Gonzaga Luiz , Das Graças Luciene , Prata Arnaldo 
Published: April 2019

Gastroparesis is a disorder characterized by symptoms and evidence of delayed gastric emptying (GE) in the absence of mechanical obstruction. Scintigraphy has been considered a "gold standard" for measuring Gastric Emptying Time (GET) and retention percentage of radio-labeled food, after four hours of ingestion. To obtain the images, it is recommended, worldwide, the use of the Tougas diet (255kcal) as a standard meal. The objective of this study was to compare the GET and the percentage of retention in the time of 4 h, obtained by scintigraphy using the Tougas diet (255 kcal) and the proposed diet (319 kcal). Thirty patients, both genders, aged 23 to 76 years, were selected, they presenting clinical symptoms suggestive of gastroparesis. These parameters were measured for the same patient, but in different days. The results showed that the diet fat content used to obtain EG of solid foods by scintigraphy did not influence the retention percentage results after 4 hours of ingestion of the radiolabeled food. However, the time of two hours is an important parameter to be observed in the result of this examination. In addition, the data suggest that the proposed diet may be more efficient for the classification of the severity of EG delay in patients with clinical signs suggestive of gastroparesis.
Evaluation of mercury levels in hair of children resident in artisanal gold mining area in the city of Chapada de Natividade - Tocantins
Authors: Mendes Seyna Ueno Rabelo , Vasconcellos Marina Beatriz Agostini , Catharino Marilia Gabriela Miranda , Quinaglia Gilson Alves , Held Barbara 
Published: April 2019

ABSTRACT The objective of the work is to evaluate the mercury exposure of children living in an artisanal gold mining area and in a control area, without mining. A cross-sectional study was conducted with children living in the municipalities of Chapada de Natividade and Porto Nacional, in the State of Tocantins, where hair samples were collected for laboratorial analysis of mercury concentrations, comparing between municipalities, gender, monthly fish consumption, profession of parents and the presence of amalgam in dental restorations. The hair samples were analyzed by the methods of neutron activation analysis and also by means of the DMA (Direct Mercury Analyzer) equipment, in the last case being a partnership with CETESB. There was no evidence of mercury-related diseases in the studied children. The mean concentration of mercury in children in Chapada de Natividade was significantly higher than in Porto Nacional. Children exposed to artisanal gold mining areas have higher concentrations of mercury than children living in non- artisanal gold mining areas. There was no significant relationship between mercury concentrations and gender, monthly fish consumption, parental profession and amalgam presence in dental restorations. The results suggest that the children living in an area exposed to mining experience greater environmental exposure to mercury, regardless of their eating habits.
Memoria y deshumanización en la narrativa concentracionaria de Jorge Semprún = Memory and dehumanization in Jorge Semprún´s Concentrationary Narrative
Authors: Sánchez Zapatero Javier 
Published: April 2019

Resumen: Independientemente de las características particulares de los espacios en los que eran recluidos, los prisioneros de los campos nazis sufrieron semejantes procesos de continua y progresiva eliminación de los elementos constituyentes de la esencia del ser humano. A los internados no sólo se les despojaba del contexto civilizador en que hasta entonces vivían, sino que su propia constitución se veía afectada hasta hacer de ellos un nuevo ente guiado por una pulsión de supervivencia. Partiendo del análisis de los textos de Jorge Semprún, el artículo estudiará los diferentes modos a través de los que la escritura expresó el proceso deshumanizador al que fueron sometidos los internos, reducidos en los campos a pura experiencia corporal. Más allá del mero inventario de recursos, se intentará demostrar cómo su empleo implica un intento de superar la inefabilidad inherente a la representación de la experiencia concentracionaria que marca toda la literatura concentracionaria de Semprún.Palabras clave: Jorge Semprún, Campos de concentración, Narrativa concentracionaria, Deshumanización, Inefabilidad.Abstract: Prisoners in Nazi concentration camps suffered a similar process of progressive and continuous dehumanization, even when they were imprisoned in different geographical places. Prisoners were deprived of the civilizing atmosphere where they lived before the arrest, and their bodies became entities whose only goal was survival. This paper approaches Jorge Semprún´s works from the perspective of the dehumanizing process suffered by the survivors, and the way their life experience was reduced to the physical survival of the body. It includes an inventory of Semprún´s autobiographical experiences, with the purpose of expressing the impossibility to verbalize the experience in concentration camps. Keywords: Jorge Semprún, Concentration Camps, Concentrationary Narrative, Dehumanization, Ineffability.