bluuebunny/crossref_metadata_2025 huggingface dataset:
Introduction. Beyond Endings – Past Tenses and Future Imaginaries
Authors: Missinne Lut , Sarkowsky Katja , Wagner-Egelhaaf Martina
Published: February 2021

In the vein of Daniel Defoe’s Robinson Crusoe (1719), the German writer Johann Gottfried Schnabel (1692–1748) wrote a four-volume Robinsonade novel, Die Insel Felsenburg [The Island Felsenburg], which was published between 1731 and 1743. Schnabel’s novel became extremely popular in Germany, as it tells the story of a group of shipwrecked settlers who, in the spirit of protestant piety, establish an ideal state on the beautiful island on which they are stranded. One day, they discover a hidden cave, where they find a well-preserved mummified man, sitting in a stone chair at a table. On a tin board, this man, Don Cyrillo de Valaro, had engraved important information for posterity: namely that he was born on 9 August 1475, came to the island on 14 November 1514, and recorded his recollection on 27 June 1606. His writing ends as follows: ‘I am still alive, however close to death, June 28. 29. and 30. and still July 1., 2. 3., 4. By recording every day that he was still alive, Don Cyrillo, the only inhabitant on the island at the time, managed to do what no autobiographer could ever complete: record his death. One could even go so far as to say that his method typifies a life-writing model – documenting the days of one’s life in the face of inevitable death. In the context of Schnabel’s novel, this episode is remarkable in so far as the most prominent entertainment of the island’s inhabitants is to tell one another about their lives. In the evening, when their work is done, they come together – and there is no TV or internet – and tell their stories. Remarkably enough, their stories are full of sex and crime – aspects of life that are banned from the virtuous island. The story of Don Cyrillo de Valaro and the settlers is fiction, of course. However, it triggers the question as to how ‘real’ autobiographers deal with or even describe their own deaths.
Relevance of Anthropometric Measurements in a Multiethnic Obesity Cohort: Observational Study (Preprint)
Authors: Bhatti Rahila , Warshow Usama , Joumaa Mona , ElSaban Mariam , Nawaz Faisal A , Khamis Amar Hassan
Published: February 2021

BACKGROUND

The prevalence of obesity is increasing worldwide, and the Middle East is not an exception to this increasing trend. Obesity increases the risk of multiple metabolic complications, such as diabetes mellitus. Measurement of obesity has primarily relied on the BMI to identify risk; however, both bedside and office-based anthropometric measures of obesity can provide more detailed information on risk.

OBJECTIVE

This study aimed to investigate the prevalence of obesity-related diseases in a multidisciplinary weight management population and to determine its relationship with obesity anthropometric indices.

METHODS

This cross-sectional study was conducted at Mediclinic Parkview Hospital (Dubai, the United Arab Emirates). In total, 308 patients have been evaluated from January to September 2019 as part of a multidisciplinary weight management program. Key demographics, anthropometrics, and clinical data were analyzed using SPSS (version 25, SPSS Inc).

RESULTS

Our cohort of 308 patients included 103 (33%) males and 205 (67%) females of 38 nationalities. The mean age of the cohort was 41 (SD 9.6) years, with a median BMI of 34.5 (IQR 6.7) and 33.7 (IQR 7.8) for males and females, respectively. The mean waist circumference (WC) was 113.4 (SD 23.3) cm and 103.5 (SD 16.2) cm, fat percentage was 33.7% (SD 11.6%) and 45% (SD 6.8%), fat mass was 41 (SD 15.2) kg and 41.1 (SD 14.1) kg, and visceral fat mass was 6.5 (SD 3.2) kg and 3.1 (SD 1.8) kg for males and females, respectively. There was a strong correlation between BMI and WC (r=0.65 and r=0.69 in males and females, respectively; P=.01) and visceral fat (r=0.78 and r=0.90 in males and females, respectively). Furthermore, visceral fat was significantly associated with WC in both sexes (r=0.73 and r=0.68 in females and males respectively; P=.01). Furthermore, WC was significantly associated with a risk of diabetes, hypertension, and nonalcoholic fatty liver disease.

CONCLUSIONS

BMI and WC are the most representative measures of obesity in our population and correlate with abdominal adiposity– and obesity-related diseases. Further studies are required to assess the benefits of these measures during weight reduction interventions.
Automatic detection of the Cyclic Alternating Pattern of sleep and diagnosis of sleep-related pathologies (Preprint)
Authors: Cui Jiajia , Huang Zhipei , Wu Jiankang
Published: February 2021

UNSTRUCTURED

The Cyclic Alternating Pattern is a periodic electroencephalogram activity occurring during No Rapid Eye Movement sleep. It is a marker of sleep instability and correlated with several sleep-related pathologies. In this article, considering the connection between heart and brain of people, by statistically analysising and comparing the cardiopulmonary characteristics of people with no pathology and patients with sleep-related diseases, an automatic recognition scheme of Cyclic Alternating Pattern is proposed based on the Cardiopulmonary Resonance Indices. Using improved Hidden Markov and Random Forest, the scheme combines both the measurements of coupling state and the stability of the cardiopulmonary system during sleep. The average recognition rate of A-phase reaches 84.67% and F1 score reaches 80.35%. Results show that our scheme could automatically recognize the Cyclic Alternating Pattern accurately, and diagnose insomnia and narcolepsy.
Differential Abundance of Mitochondrial Proteome Influences the Color Stability of Beef Longissimus Lumborum and Psoas Major Muscles
Authors: Ramanathan Ranjith , Nair Mahesh N. , Wang Yifei , Li Shuting , Beach Carol M. , Mancini Richard A. , Belskie Kaylin , Suman Surendranath P.
Published: February 2021

Mitochondrial functionality affects muscle-specific beef color stability. Nonetheless, the relationship between mitochondrial proteome and muscle-specific beef color stability is yet to be examined. Therefore, the objective of the present study was to differentiate the proteomes of mitochondria from beef longissimus lumborum (LL; color-stable muscle) and psoas major (PM; color-labile muscle) steaks during retail display. LL and PM muscles from 7 beef carcasses (USDA Choice; 48 h postmortem) were fabricated into 1.92-cm-thick steaks and were aerobically packaged and retail displayed for 6 d. Mitochondria were isolated on day 3 and 6, whereas instrumental color and biochemical attributes were evaluated on day 0, 3, and 6. Mitochondrial proteome was analyzed employing two-dimensional electrophoresis. The protein spots exhibiting 1.5-fold or more intensity differences (P < 0.05) between the muscles and display days were subjected to tryptic digestion and identified by tandem mass spectrometry. Whereas color stability decreased in both muscles during retail display, LL steaks demonstrated greater (P < 0.05) color stability during display than their PM counterparts. Mitochondria could not be isolated from PM steaks on day 6 because of extensive degradation. Seven proteins were differentially abundant ( P < 0.05) in LL and PM on day 3 of display. In LL steaks, 7 proteins were more abundant (P < 0.05) on day 3 than on day 6 of retail display. The differentially abundant proteins were enzymes, binding proteins, and proteins involved in biosynthesis. These results indicated that differential abundance of mitochondrial proteome could also contribute to the variations in color stability of beef LL and PM muscles during retail display.
Evaluation of Antiulcer Activity of Ethanol Extract of Leaves of Lactuca sativa
Authors: Maheswari B. , Devi P Rajyalakshmi , Ajith K. , VedPrakash P , SeshaSai Gayatri K.
Published: February 2021

In this modern era, gastrointestinal disorders are the universal problem. Peptic ulcer is one of the major diseases affecting the human population. It develops due to the imbalance between aggressive factors like acid, pepsin, H. pylori and bile salts and defensive factors like mucous, bicarbonate, blood flow, epithelial cell restoration and prostaglandins. The anti-ulcer activity of Ethanol extract of leaves of Lactuca sativa (EELS) was estimated using the experimental models of acute gastric lesions induced by ethanol, pylorus ligation and cold restraint stress in Wistar albino rats. Animals pre-treated with doses of 250 mg/kg, 500 mg/kg of EELS were statistically analyzed and compared to the standard and control group with the parameters like volume of gastric secretion, total acidity and ulcer index. The results suggested that EELS significantly decreased volume of gastric acid secretion, total acidity and ulcer index in comparison with standard drug Omeprazole. EELS shown significant reduction in lesion index, total affected area and percentage of lesion in comparison with control group in Ethanol induced ulcer in experimental models. The gastric mucosal protective effect of EELS is brought by inhibiting the gastric secretion, which shows it may act like a proton pump inhibitor. Thus the present study indicates that EELS has anti-ulcerogenic potency in Ethanol induced, pylorus ligation and cold restraint stress induced ulcers in rats.

Keywords: Antiulcer, ulcer index, cold stress, peptic ulcer, pylorus ligation
Antioxidant Evaluation and Polyphenol Contents of Hydro Ethanolic Extract’s Fractions from Ephedra nebrodensis
Authors: Hamoudi Meriem , Amroun Djouher , Khennouf Seddik , Dahamna Saliha
Published: February 2021

Ephedra nebrodensis, is a medicinal plant, traditionally in Algeria used for the cure of various ailments such as hepatic disorders. On this basis in present study the phytochemical screening and in vitro antioxidant activity of various fractions (n-hexane, chloroform, ethyl acetate, n-butanol and water) of ethanol extract obtained by maceration from aerial parts of E. nebrodensis were investigated. Different fractions were accessed for their yield percentage, total polyphenol content (TPC), total flavonoid content (TFC), total tannins content (TTC) and antioxidant potential (DPPH - 2,2-diphenyl-1-picrylhydrazyl; ABTS - 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid), reducing power assay (FRAP - ferric reducing antioxidant power activity),and bleaching of β-carotene test . Results showed that ethyl acetate fraction (EF) represents the highest amount of total polyphenols, flavonoids and tannins with 269.669 ± 0.031 µg gallic acid equivalent/mg of DE, 44.507 ± 0.003 µg quercetin equivalents/mg of DE and 228.487 ± 1.362 µg tannic acid equivalents/mg of DE, respectively. In antioxidant assays, ethyl acetate fractions (EF) showed the strongest DPPH and ABTS antioxidant (IC50: 0.009 and 0.004 µg/mL) and FRAP potential (EC50: 0.005 ± 0.000 µg/mL), which significantly correlate to its high content of polyphenolics, flavonoids and tannins. Further, fractions were rich in phenolic compounds. The present results support the possible use of the ethyl acetate fraction from E. nebrodensis in pharmaceutical industries as a natural antioxidant.

Keywords: Ephedra nebrodensis, polyphenols, flavonoids, tannins, antioxidant capacity.
Evaluation of Antimicrobial Activity of Cedrela toona Roxb. Fruit Extracts
Authors: Shah Kinjal H , Patel Piyush M.
Published: February 2021

Evaluation of antimicrobial activity was performed by cup-plate method. The test microorganisms used for the antimicrobial activity were four bacterial species (two Gram positive and two Gram negative) – Bacillus subtilis, Staphylococcus aureus, Pseudomonas aeuroginosa,Escherichia coli. The test microorganisms used for the antimicrobial activity were four bacterial species (two Gram +ve and two Gram -ve) Bacillus subtilis, Staphylococcus aureus, Pseudomonas aeuroginosa,Escherichia coli.
Digital maps of hydrobionts and surface waters quality, the Baikal natural territory
Authors: Lubsanova E.L.
Published: February 2021

The author provides information on a developed method of geoinformation mapping hydrobionts in order to automatize digital cartographic images formation with spatial-andtemporal distribution of species and long-term trends of freezing surface waters’quality changes at studying relationships in the functioning of hydrobiological communities. The features of technique with the description of technical stages for creating databases and constituent elements of geoinformation software by the example of designing a regional geoservice with interactive plankton-and-benthos-aquatic-organisms’ maps in the Baikal natural territory are presented. Signs mapping the classes of water pollution by hydrobiological indicators on points available for recognition by colour-blind people are offered to be applied in cartographic material. They are easily reproduced on objects near surface streams in cases of water pollution for warning the population.
El rol del cuidador a distancia de personas con enfermedad crónica: scoping review
Authors: Rojas-Reyes Jennifer , Chaparro-Díaz Lorena , Carreño-Moreno Sonia Patricia
Published: February 2021

Introducción. Se ha explorado poco sobre el rol del cuidador a distancia o cuidador secundario de las personas con enfermedad crónica, por ello se hace necesario conocer el avance de la evidencia científica sobre este tipo de cuidadores, con el fin de determinar los aportes y los vacíos presentes en la literatura. Metodología. Revisión descriptiva tipo scoping review, en la que se realizó una búsqueda en las siguientes bases de datos: de Embase, Science direct, Pubmed, Medline, Academic search complete y Scopus, limitando el tiempo entre 2005 – 2020. Se utilizaron los términos: DeCS y MeSH de Long distance caregiver, distance caregiver, secondary caregiver y chronic disease. Además, se seleccionaron 20 artículos originales, una vez realizado el proceso de crítica con CASPe. Resultados. Emergieron 4 núcleos temáticos: experiencias y percepciones del cuidador a distancia, características del rol del cuidador a distancia, soporte social del cuidador a distancia por medio de Tecnologías de la información y la comunicación TICs y estrategias de afrontamiento del cuidador a distancia. Conclusión: es un fenómeno poco explorado, por lo que son amplios los vacíos que existen, empezando por su autoreconocimiento en el desempeño de su rol hasta las intervenciones específicas que lo favorezcan.
A INFLUÊNCIA DA ALFABETIZAÇÃO NAS COGNIÇÕES DE RECONHECIMENTO DE FACES E DOS SINAIS DA FALA: UM ESTUDO PSICOLINGUÍSTICO
Authors: Isadora Rodrigues de Andrade  , Aniela Improta França
Published: February 2021

Testes de imagem cerebral mostram que depois da alfabetização,  durante o reconhecimento de grafemas surge uma ativação na  região ventro-occipito-temporal esquerda: a VWFA. Acredita-se que a VWFA impacte o mosáico de regiões vizinhas envolvidas no reconhecimento de objetos, lugares, parte do corpo e faces. Ela também influencia a região que abriga o reconhecimento dos sinais da fala. Esse estudo testa crianças nas fases pré e pós alfabetização, procurando correlatos comportamentais para esses achados neurofisilógicos. Encontramos impacto positivo da alfabetização no processamento da fala, mas, perda de acuidade provisória no reconhecimento de faces dos participantes recém-alfabetizados.
Predicting virologically-confirmed influenza using school absences in Allegheny County, Pennsylvania, USA during the 2007-2015 influenza seasons
Authors: Quandelacy Talia , Zimmer Shanta , Lessler Justin , VUKOTICH Charles , Bieltz Rachel , Grantz Kyra , Galloway David , Read Jonathan , Zheteyeva Yenlik , Gao Hongjiang , Uzicanin Amra , Cummings Derek
Published: February 2021

Background Children are important in community-level influenza
transmission. School-based monitoring may inform influenza surveillance.
Methods We used reported weekly confirmed influenza in Allegheny County
during the 2007, and 2010-2015 influenza seasons using Pennsylvania’s
Allegheny County Health Department all-age influenza cases from health
facilities, and all-cause and influenza-like illness (ILI)-specific
absences from nine county school districts. Negative binomial regression
predicted influenza cases using all-cause and illness-specific absence
rates, calendar week, average weekly temperature and relative humidity,
using four cross-validations. Results School districts reported
2,184,220 all-cause absences (2010-2015). Three one-season studies
reported 19,577 all-cause and 3,012 ILI-related absences (2007, 2012,
2015). Over seven seasons, 11,946 confirmed influenza cases were
reported. Absences improved seasonal model fits and predictions.
Multivariate models using elementary school absences outperformed middle
and high school models (relative mean absolute error (relMAE)=0.94,
0.98, 0.99). K-5 grade-specific absence models had lowest mean absolute
errors (MAE) in cross-validations. ILI-specific absences performed
marginally better than all-cause absences in two years, adjusting for
other covariates, but markedly worse one year. Conclusions Our findings
suggest seasonal models including K-5th grade absences predict all-age
confirmed influenza and may serve as a useful surveillance tool.
UK Head and neck cancer surgical capacity during the second wave of the COVID-19 pandemic -- have we learned the lessons? COVIDSurg collaborative
Authors: shaw richard , Nankivell Paul , Winter Stuart , Schache Andrew , Ho Michael
Published: February 2021

Objectives - The aim of this study was to evaluate the differences in
surgical capacity for head and neck cancer in the UK between the first
wave (March-June 2020) and the current wave (Jan-Feb 2021) of the
COVID-19 pandemic. Design – REDcap online based survey of hospital
capacity. Setting - UK secondary and tertiary hospitals providing head
and neck cancer surgery. Participants – One representative per hospital
was asked to report the capacity for head and neck cancer surgery in
that institution. Main outcome measures – The principal measures of
interests were new patient referrals, capacity in outpatients, theatres
and critical care; therapeutic compromises constituting delay to
surgery, de-escalated surgery and therapeutic migration to non-surgical
primary modality. Results – Data was returned from approximately 95%
of UK hospitals with a head and neck cancer surgery specialist service.
50% of UK head and neck cancer patients requiring surgery have
significantly compromised treatments during the second wave: 28%
delayed, 10% have received radiotherapy based treatment instead of
surgery and 12% have received de-escalated surgery. Surgical capacity
has been more severely constrained in the second wave (58% of
pre-pandemic level) compared with the first wave (62%) despite the time
to prepare. Conclusions - Some hospitals are overwhelmed by COVID-19 and
unable to offer essential cancer surgery, but all have neighbouring
hospitals in their region retaining good (or even normal) capacity. It
is noteworthy that very few patients have been appropriately re-directed
away from the hospitals most constrained by their burden of COVID-19.
The paucity of an effective central or regional strategic response to
this evident mismatch between demand and surgical capacity is to the
detriment of our head and neck cancer patients.
Wireless cystoscope the future of cystoscopy
Authors: Chatzipapas Ioannis , Kathopoulis Nikolaos , Siemou Panagiota , Protopapas Atthanasios
Published: February 2021

Cystoscopy during a hysterectomy may decrease the rate of lower urinary
tract injury. Our department has developed a new wireless endoscopic
setup that couples a rigid 30 degree , 4-mm cystoscope with a wireless
camera modified with a special adapter. We used a portable and
rechargeable light source. Two cases performed with the new setup are
presented in the videos. This report presents the use of a wireless,
low-cost and portable camera throughout the course of cystoscopy and the
results are promising. The new technique is feasible and easy
reproducible and could contribute to making cystoscopy during
gynecologic surgery cost-effective.
Did we get lost in the Seventies? Adenoidectomy for middle ear disease in cleft palate children: a systematic review.
Authors: Rosso Cecilia , Bulfamante Antonio , Pipolo Carlotta , Fuccillo Emanuela , maccari alberto , Lozza Paolo , scotti alberto , pisani antonia , castellani luca , donato giuseppe de , Tavilla Maria Chiara , Portaleone Sara , Felisati Giovanni , saibene alberto maria
Published: February 2021

OBJECTIVES: Cleft palate children have a higher incidence of otitis
media with effusion, more frequent recurrent acute otitis media
episodes, and worse conductive hearing losses than non-cleft children.
Nevertheless, data on adenoidectomy for middle ear disease in this
patient group is scarce, since many feared worsening of velopharyngeal
insufficiency after the procedure. This review aims at filling this
knowledge gap by collecting the available evidence on this subject, to
frame possible further areas of research and interventions. DESIGN: A
PRISMA-compliant systematic review was performed. Multiple databases
were searched with criteria designed to include all studies focusing on
the role of adenoidectomy in treating middle ear disease in cleft palate
children. After duplicate removal, abstract and full-text selection, and
quality assessment, we reviewed eligible articles for clinical
indications and outcomes. RESULTS: Among 321 unique citations, 3 studies
were deemed eligible (2 case series and a retrospective cohort study).
The outcomes were positive in all three articles in terms of conductive
hearing loss improvement, recurrent otitis media episodes reduction, and
effusive otitis media resolution (this last result being not
statistically significant). CONCLUSION: Despite promising results,
research on adenoidectomy in treating middle ear disease in the cleft
population has stopped in the mid-Seventies. No data is therefore
available on the role of modern conservative adenoidectomy techniques
(endoscopic and/or partial) in this context. Prospective studies are
required to define the role of adenoidectomy in cleft children, most
interestingly in specific subgroups such as patients requiring
re-tympanostomy, given their known risk of otologic sequelae.
Existence of periodic and almost periodic solutions in a resonant model on stem cell dynamics
Authors: Alliera Carlos
Published: February 2021

This work deals with the existence of almost periodic solutions in a
biological model, the model proposed by VG Nazarenko and E.E. Sel’kov of
stem cell dynamics. This article demonstrates the existence of almost
periodic solutions, for this purpose, the constant parameters of the
system were changed to almost periodic functions which allows greater
adaptability in biological cases such as this. This kind of changes have
already been raised in other biological systems. In this case we will
use the implicit function theorem to prove the existence of periodic
solutions.
Fatigue damage healing model based on dislocation reverse-back under unconstraint vibration condition for copper film
Authors: Zhang Haimeng , Shang De-Guang , Liu Xiao-Dong , Zhang Yu
Published: February 2021

In this investigation, it is found that the generated elastic stress
during the unconstraint vibration treatment process can act as the
dislocation driving stress on the dislocation in the micro-scale. When
the sum of the dislocation driving stress, the image stress and the back
stress exceeds the motion resistance of the dislocations in a pile-up,
the dislocations begin to reverse back, and the pile-up disappear. Based
on this principle, a fatigue damage-healing model under unconstraint
vibration condition was proposed. The verified results showed that the
damaged copper film can be effectively healed by the vibration guided by
the model calculation.
Clinical scope of early fetal echocardiography
Authors: Infante Ximena Carolina Romero , Mendoza Arturo Montaño , Sarmiento Diana , Calvo María Uriel , Valle José De la Hoz
Published: February 2021

The chances of detecting congenital heart disease are improved following
structured protocols. Fetal heart disease is one of the main serious
congenital malformations. The objective of this review is to present the
benefits of sequential and routine cardiac evaluation in the first and
early second trimesters and to identify the structures and pathologies
that can be detected at this gestational age. The databases of PubMed,
Medline, MD consult, Embase, Clinical Key, Scielo, and ScienceDirect, as
well as specialized texts in Spanish and English were searched for
diagnostic studies, systematic reviews, and meta-analysis related to the
terms “early fetal echocardiography” and “congenital heart
malformations” published between 2000 and 2019. Technological advances
have revolutionized the fetal echocardiographic examination making
possible the diagnosis of congenital heart disease from the first and
early second trimester of pregnancy. However, it should be recognized
that early fetal echocardiography has limitations such as the evaluation
of pulmonary veins and cardiac lesions that are progressive. The benefit
found was earlier detection of pathologies with high sensitivity and
specificity. A fetal cardiac evaluation sequence was included in these
early fetal echocardiographic examinations due to the awareness of fetal
anatomical and hemodynamic differences in the first trimester and the
beginning of the second trimester. Early fetal echocardiography is a
very useful tool for the detection of congenital heart disease; it
allows parents to be informed about the prognosis and possible
treatments early. Fetal cardiac examination in the first trimester is
safe and can detect the most of heart congenital malformation.
Comprehensive comparison of canine retraction using NiTi closed coil springs vs elastomeric chains:
Authors: Barsoum Haya A. , ElSayed Hend S. , El Sharaby Fouad A. , Palomo Juan Martin , Mostafa Yehya A.
Published: February 2021

Objectives

To compare canine retraction using NiTi closed coil springs vs elastomeric chains comprehensively in a split-mouth randomized controlled trial.

Materials and Methods

The canines in 64 quadrants were randomly retracted into the first premolar extraction spaces using NiTi closed coil springs or elastomeric chains, in the maxilla and mandible. The retraction force was 150 g. Cone beam computed tomography scans and study models were obtained before the start of canine retraction and 6 months later. The rate and total amount of canine retraction, canine rotation, tipping, and root resorption were evaluated. A visual analogue scale was used to evaluate patients' pain experience.

Results

The two methods were statistically similar for dental changes, rate of canine retraction, and root resorption. However, patients reported significantly more days of pain with the elastomeric chain compared to the NiTi closed coil springs.

Conclusions

Within the constraints of the current study, using either NiTi closed coil springs or elastomeric chains as force delivery systems for canine retraction results in no significant difference in the rate of canine retraction, tipping, rotation, or root resorption. Pain experience during retraction using elastomeric chains is more significant yet needs further investigation.
3D Baskılı Termoplastik Poliüretan Esnek Dönme Mafsalının Direngenlik Karakterizasyonu
Authors: BALER Ufuk Tan , AYKIN Enis , OKYAR Ali Fethi , TOPALOĞLU Nezih
Published: February 2021

Bu çalışmanın amacı, termoplastik poliüretan (TPU) malzemesinden üretilmiş olan ve kendi rotasyon ekseninde dönebilen mekanizma parçalarının torsiyonel direngenlik sabitlerinin deneysel ve teorik olarak elde edilip karşılaştırılmasıdır. Hassas bir ölçüm sistemi kurularak dört numune için farklı yüklerde eğilme açıları ölçülmüş ve tepki momenti değerleri belirlenmiş, böylece deneysel torsiyonel direngenlikler hesaplanmıştır. Ankastre levha kullanılarak elde edilen teorik model ile deneysel sonuçların genel itibariyle uyumlu olduğu kaydedilmiştir. Dönme mafsalı boğaz bölgesi geometrik parametrelerinin sonucu ne şekilde etkilediği tartışılmıştır. Önerilen deney düzeneğinin dönme mafsalı torsiyonel direngenlik ölçümünde etkin bir şekilde kullanılabileceği sonucuna varılmıştır.
Kinetics and Isotherm Studies on Adsorption of Hexavalent Chromium Using Activated Carbon from Water Hyacinth
Authors:   Chemistry Department, College of Arts and Sciences, Batangas State University, Batangas City, Philippines, Macalalad Angelica , Ebete Quennie Rose ,   Chemistry Department, College of Arts and Sciences, Batangas State University, Batangas City, Philippines, Gutierrez Dominic ,   Chemistry Department, College of Arts and Sciences, Batangas State University, Batangas City, Philippines, Ramos Madelaine ,   Chemistry Department, College of Arts and Sciences, Batangas State University, Batangas City, Philippines, Magoling Bryan John ,   Chemistry Department, College of Arts and Sciences, Batangas State University, Batangas City, Philippines
Published: February 2021

The present study is focused on the use of activated carbon derived from water hyacinth (WH-AC) as adsorbent for the removal of Cr(VI) from aqueous solution. The optimized WH-AC was found to be mesoporous and considered as granular. The surface area of 11.564 m2/g was found to have a good adsorption capacity. The adsorption data of the optimized WH-AC followed a pseudo-second order kinetics and the Freundlich isotherm model. Based on the correlation coefficient obtained from pseudo-second-order kinetic model, the R2 values were all above 0.99, which is closer to unity of one (1) indicating that it followed a chemisorption process. The adsorption capacity of WH-AC increased from 1.98 to 4.68 mg/g when adsorbate concentration increased from 20 to 50 mg/l. The overall study proved that the adsorption by activated carbon derived from water hyacinth can be an alternative and efficient technique in hexavalent chromium removal.
The Quantum-Chemical and Spectral Criteria for Hydrogen Bonding Efficiency in Structural Analysis of Aramides
Authors:   Dnipro State University of Agriculture and Economics, 25, S. Yefremov St., 49600 Dnipro, Ukraine, Tokar Andrey , Chigvintseva Olga ,   Dnipro State University of Agriculture and Economics, 25, S. Yefremov St., 49600 Dnipro, Ukraine
Published: February 2021

Some features of hydrogen bonding effects for the phenylon polymer matrix filled with a terlon fiber have been investigated at ab initio approximation. The results of calculations for isolated and dimerized structural forms of N-phenylbenzamide as a model compound are in good agreement with the spectral data for this composite material building.
Synthesis, Structure and Properties of the Grafted Peptidomimetic Polymer Brushes Based on Poly(N-methacryloyl-L-proline)
Authors:   Lviv Polytechnic National University, 12, S. Bandery Іt., 79013 Lviv, Ukraine, Tokareva Maria , Ohar Halyna ,   Lviv Polytechnic National University, 12, S. Bandery Іt., 79013 Lviv, Ukraine, Tokarev Stanislav ,   Lviv Polytechnic National University, 12, S. Bandery Іt., 79013 Lviv, Ukraine, Stetsyshyn Yuriy ,   Lviv Polytechnic National University, 12, S. Bandery Іt., 79013 Lviv, Ukraine
Published: February 2021

A new approach to synthesis at the aminated glass surface of novel biocompatible polymeric nanolayers consisting of poly(N-methacryloyl-L-proline) brushes has been developed. Formation of the polymer nanolayers has been realized in several stages. At the first stage, the glass surface has been modified by aminosilane (APTEC), afterwards monolayer of the peroxide-containing initiator (PI) based on pyromellitic acid has been tethered to this aminated surface. The immobilized PI has been used further for initiation of the grafting "from the surface" polymerization of N-methacryloyl-L-proline for obtaining of the peptidomimetic polymer brushes. Features of the reactions, as well as optimal conditions for performing the process are highlighted in this work. Presented here poly(N-methacryloyl-L-proline) grafted brush coatings are promising material for numerous applications in nanomedicine, especially for production of implants and systems of the controlled interaction with proteins and cells.
Regulation Features of Structure of Linear Block-Copolyurethane Composites of High Wear Resistance
Authors:   Ukrainian State University of Chemical Technology 8, Gagarina Ave., 49005 Dnipro, Ukraine, Anisimov Volodymyr , Anisimov Volodymyr V. ,   Ukrainian State University of Chemical Technology 8, Gagarina Ave., 49005 Dnipro, Ukraine
Published: February 2021

The influence of the main structural parameters (molecular weight and hard blocks content) as well as methods of filling linear block-polyurethanes and their compositions on their strength, deformation, rheological and tribotechnical characteristics has been studied. A complex approach to produce polyurethane compositions of improved wear resistance has been suggested.
State of the Art in the Production of Charcoal: a Review
Authors:   Lviv Polytechnic National University, 12, Bandera St., 79013 Lviv, Ukraine, Pyshyev Serhiy , Miroshnichenko Denis ,   National Technical University “Kharkiv Polytechnic Institute”, 2, Kirpychova St., 61002 Kharkiv, Ukraine, Malik Ivan ,   National Technical University “Kharkiv Polytechnic Institute”, 2, Kirpychova St., 61002 Kharkiv, Ukraine, Contreras Aquilino Bautista ,   Carbosur, Calle Mexico F12, Parque Industrial Maquilador Oaxaca 2000, Magdalena Apasco Etla, C.P. 68226, Oaxaca, Mexico, Hassan Nader ,   Nader Group Engineering, Rasta Hotel, Unit 728, P.C. 42512, Port Said, Egypt, ElRasoul Ahmed Abd ,   Nader Group Engineering, Rasta Hotel, Unit 728, P.C. 42512, Port Said, Egypt
Published: February 2021

The use of charcoal (CC) for various industries was analysed; the modern ideas about the factors influencing the process of obtaining CC were considered. The effect of raw materials nature (wood or agricultural wastes) and their characteristics (size, physical properties, chemical composition), as well as carbonization temperature, heating rate, oxygen level and pressure on the yield and quality of CC was described. The existing technologies for charcoal production were analyzed; they were classified according to the type of heating initiation and temperature maintenance during the carbonization process. The Lambiotte, DPC and Carbonex technologies were considered.
Study of Coal Microbiocenosis for Development of Biotechnological Method for its Desulfurization
Authors:   Odessa I.I. Mechnikov National University 2, Dvoryanska St., 65082 Odessa, Ukraine, Blayda Iryna , Vasylieva Tetyana ,   Odessa I.I. Mechnikov National University 2, Dvoryanska St., 65082 Odessa, Ukraine, Vasylieva Nataliia ,   Odessa I.I. Mechnikov National University 2, Dvoryanska St., 65082 Odessa, Ukraine, Khytrych Valentyna ,   Odessa I.I. Mechnikov National University 2, Dvoryanska St., 65082 Odessa, Ukraine, Shuliakova Svitlana ,   Odessa I.I. Mechnikov National University 2, Dvoryanska St., 65082 Odessa, Ukraine
Published: February 2021

A presence of microscopic fungi, heterotrophic bacteria, as well as neutrophilic and acidophilic chemolitotrophic bacteria was determined in coal microbiocenosis. The largest and most active towards pyrite sulfur removal is the Acidithiobacillus genus. Heterotrophic bacteria have the biggest potential when it comes to removal of organic sulfur. Preceding treatment of coal with “silicate” bacteria from the Bacillus genus will allow to use coal microbiocenosis for its biodesulfurisation at its full potential.
Chinese Intellectuals as Represented in ‘New Era’ Fictional Dialogues
Authors: Lai Hui
Published: February 2021

This book explores the status of Chinese intellectuals from 1980 to 2005 and its diachronic change in this period, as represented by dialogues between intellectuals and their leaders in fiction. June 1989 serves as a historical dividing line on which to base this diachronic study. In order to carry out the study, first, the direct speech of intellectuals and their leaders is extracted and compiled into corpora for a ‘key key-words’ analysis (see section 3.3.2 for a definition of key key-words). Second, a stylistic analysis is undertaken with the aim of conducting a more detailed qualitative investigation of the dialogues. Three dialogues in each of the two periods are selected for the stylistic analysis. The key-words derived from this analysis describe features of the speech of intellectuals, the speech of intellectuals as compared to the speech of leaders and the speech of leaders as compared to that of intellectuals. The study shows that the key key-words indicating topics of the speech and those characterising the style of the speech represent the social identity of intellectuals. A comparison of these key keywords between the two periods uncovers the diachronic change in the status of intellectuals. The corpus approach is complemented by a stylistic analysis, which explores dialogues selected from different years to emphasise the diachronic change. A dual model is formulated to incorporate dialogue analysis into a larger structure of goal development analysis. The study shows how speakers use discursive strategies to manage relationships and have their situational goals achieved in interaction. Negotiation of goals invokes the institutional and social identities of speakers, bringing out their status. The research shows that the corpus approach and the stylistic analysis can be combined to present a more comprehensive description of data. It is hoped that this will shed some light on studies of post-Cultural Revolution Chinese intellectuals and on how quantitative and qualitative approaches merge in the investigation of interaction between superiors and subordinates.
PENGARUH INTERVENSI PIHAK LUAR TERHADAP MODERNISASI MASYARAKAT KAMPUNG NAGA DI DESA NEGLASARI
Authors: Lubis Chintia , Sophia Dinda , Dzikri Farhan , Veronika Getsemane , Andreas Giant , Sagara Muhammad Ihsan , Hans Paulus
Published: February 2021

ABSTRAKModernisasi telah menjamah hampir seluruh wilayah di Indonesia, baik dikarenakan oleh semakin berkembangnya teknologi, interaksi dengan orang dengan budaya berbeda, dan lain sebagainya. Penelitian ini dilaksanakan untuk mengetahui pengaruh intervensi pihak luar terhadap modernisasi masyarakat Kampung Naga di Desa Neglasari. Sebagaimana diketahui, Kampung Naga adalah sebuah wilayah yang menutup diri dari dunia luar. Metode penelitian yang digunakan untuk mendapatkan data seakurat mungkin adalah metode kualitatif, dimana peneliti mengemas fakta dan data yang ada untuk kemudian dikembangkan sebagai jawaban atas pertanyaan, hipotesis dan teori peneliti. Pendekatan studi kasus dilakukan untuk semakin mempermudah peneliti untuk mendapatkan informasi. Dari semua aktivitas pencarian informasi yang dilakukan oleh peneliti, ditemukan pengaruh intervensi masyarakat luar terhadap masyarakat Kampung Naga. Intervensi tersebut kemudian mempengaruhi budaya dan kebiasaan masyarakat Kampung Naga, baik dari segi positif maupun negatif. Pengaruh dari intervensi pihak luar diharapkan tidak menjadikan nilai budaya yang melekat di dalam diri masyarakat Kampung Naga semakin luntur dan akhirnya hilang. ABSTRACTModernization has touched almost all regions in Indonesia, both due to the development of technology and interaction with people from different cultures. This research was conducted to determine the effect of the outside intervention on the modernization of the Kampung Naga community in Neglasari Village. As is known, Kampung Naga is an area that closes itself to the outside world.The research method used to obtain data as accurate as possible is a qualitative method, in which the researcher packages existing facts and data and then develops them as answers to the researcher's questions, hypotheses, and theories. The case study approach was carried out to make it easier for researchers to obtain information.From all information-seeking activities carried out by researchers, found the influence of outside community intervention on the people of Kampung Naga. The intervention then influenced the culture and habits of the people of Kampung Naga, both in positive and negative terms. The influence of outside intervention will not make the cultural values inherent in the people of Kampung Naga fade and eventually disappear.
SOSIALISASI PERNIAGAAN DI KECAMATAN ANDIR KOTA BANDUNG
Authors: Arifianti Ria , Alexandri Mohammad Benny , Auliana Lina
Published: February 2021

ABSTRAK Perniagaan memberikan kontribusi yang besar untuk pendapatan asli suatu daerah. Perniagaan ini berdampak untuk semua Kota terutama Kota Bandung. Kota Bandung memperoleh kointribusi pendapatan berdasarkan perniagaan. Salah Satu pusat perniagaan terletak di Kecamatan Andir. Kecamatan ini memberikan kontribusi terbesar untuk pendapat asli daerah  Kota Bandung.Metode pengabdian pada masyarakat yaitu melakukan workshop. Workshop dilakukan dengan melakukan sosialisasi. Langkah yang dilakukan adalah melakukan pengumpulan data, diskusi dalam hal ini sosialisasi dan evaluasi yang berkaitan dengan sinkronisasi data.Hasil yang didapat, Kecamatan Andir  mempunyai industri berjumlah 137 unit. Selain itu Kecamatan Andir memiliki 3 pasar, 60 pertokoan, 51 mini market dan 1 departement store.  Industri ini tersebar di 6 kelurahan yang ada di Kecamatan Andir. Perkembangan perniagaan ini memberikan kontribusi yang besar dalam menaikkan Pendapatan Asli Daerah Kota Bandung.Dalam pengembangan perniagaan di Kecamatan Andir, yang menjadi permasalahan adalah dalam segi permodalan, terutama apabila jalannya perniagaan tidak berjalan dengan baik atau mengalami kerugian.  ABSTRACT Commerce provides a large contribution to the original income of an area. This commerce has an impact on all cities, especially Bandung. The city of Bandung obtains revenue co-contributions based on commerce. One of the trade centers is located in Andir District. This sub-district provides the largest contribution to the original opinion of the City of Bandung.The method of community service is conducting workshops. The workshop was conducted by conducting socialization. The steps taken are collecting data, discussing in this case the socialization and evaluation related to data synchronization.The results obtained show that Andir District has 137 units of industry. In addition, Andir District has 3 markets, 60 shops, 51 mini markets and 1 department store. This industry is spread across 6 urban villages in Andir District. This business development has contributed greatly to increasing the Regional Original Income of Bandung City.In the development of commerce in Andir Subdistrict, the problem is in terms of capital, especially if the business is not running well or experiences a loss
Canal 9 frente al espejo: gobierno y empresarios en dos momentos de la historia de la televisión argentina (1973 y 1984)
Authors: Rosales Mariana , Sticotti Joaquín
Published: February 2021

El presente trabajo se propone, a partir del análisis de dos momentos bisagra para la historia del Canal 9, reflexionar sobre el papel de empresarios y gobiernos en la televisión argentina. La hipótesis principal es que se puede observar un desplazamiento en los roles cumplidos por los funcionarios del Estado y los empresarios ligados a la televisión de 1974 a 1984. Se indagan dos tipos de fuentes: unas que proyectan la imagen que el Canal 9 construía de sí mismo y otras asociadas al contexto estatal y mediático. Luego de analizar cada momento, se integra el análisis en una conclusión que busca remarcar las características de este desplazamiento.
Defensa, solidaridad y apoyo a los presos políticos. La COFAPPEG (1971-1976)
Authors: Scocco Marianela
Published: February 2021

La defensa de presos políticos tiene larga data en Argentina, pero fue en los primeros años de la década de 1970, con el incremento de la represión y de la cantidad de detenidos políticos, que se experimentó la creación de organizaciones dedicadas exclusivamente a este problema. Estas agrupaciones de defensa, solidaridad y apoyo a los presos políticos, estudiantiles, gremiales y sociales, estaban constituidas principalmente por familiares de las personas detenidas pero tenían reconocidos vínculos con algunas organizaciones políticas y político-militares. Este artículo indaga sobre una de las más importantes del periodo: la Comisión de Familiares de Presos Políticos, Estudiantiles y Gremiales (COFAPPEG).
El discurso sobre la riqueza del rey en la baja edad Media castellana: aproximación al tesoro de Enrique IV de Castilla como instrumento de propaganda política
Authors: Ortego Rico Pablo
Published: February 2021

Estudio del papel asignado a la riqueza y el tesoro de Enrique IV de Castilla como instrumentos de propaganda utilizados en la crítica política y en la legitimación de la oposición al monarca durante su reinado. Asimismo, se analiza el papel desempeñado por ambos elementos en la elaboración de un perfil político y moral del rey que llegaría a formar parte de la memoria historiográfica sobre el monarca elaborada por los cronistas.
Reflexiones sobre la representación de los grupos de poder urbanos y sus acciones en las crónicas medievales peninsulares
Authors: Díaz Marcilla Francisco José
Published: February 2021

El presente trabajo pretende abordar la representación que se hace en las crónicas de la Península Ibérica durante la Baja Edad Media de los grupos de poder de las ciudades, así como del pueblo llano, también como grupo de presión, en los reinos de Portugal, Castilla, Navarra, la Corona de Aragón y Granada. Se tratará de analizar las funciones que desempeñan esos grupos en las crónicas, destacando algunos ejemplos ilustrativos de cada reino.
Prediksi Not Operational Transaction Menggunakan Logistic Regression pada Bank XYZ di Kota Kupang
Authors: Tanone Radius , Emmanuel Arnold B
Published: February 2021

Bank XYZ is one of the banks in Kupang City, East Nusa Tenggara Province which has several ATM machines and is placed in several merchant locations. The existing ATM machine is one of the goals of customers and non-customers in conducting transactions at the ATM machine. The placement of the ATM machines sometimes makes the machine not used optimally by the customer to transact, causing the disposal of machine resources and a condition called Not Operational Transaction (NOP). With the data consisting of several independent variables with numeric types, it is necessary to know how the classification of the dependent variable is NOP. Machine learning approach with Logistic Regression method is the solution in doing this classification. Some research steps are carried out by collecting data, analyzing using machine learning using python programming and writing reports. The results obtained with this machine learning approach is the resulting prediction value of 0.507 for its classification. This means that in the future XYZ Bank can classify NOP conditions based on the behavior of customers or non-customers in making transactions using Bank XYZ ATM machines.