bluuebunny/crossref_metadata_2025 huggingface dataset:
Collaborative prediction of web service quality based on user preferences and services
Authors: Song Yang
Published: December 2020

The prediction of web service quality plays an important role in improving user services; it has been one of the most popular topics in the field of Internet services. In traditional collaborative filtering methods, differences in the personalization and preferences of different users have been ignored. In this paper, we propose a prediction method for web service quality based on different types of quality of service (QoS) attributes. Different extraction rules are applied to extract the user preference matrices from the original web data, and the negative value filtering-based top-K method is used to merge the optimization results into the collaborative prediction method. Thus, the individualized differences are fully exploited, and the problem of inconsistent QoS values is resolved. The experimental results demonstrate the validity of the proposed method. Compared with other methods, the proposed method performs better, and the results are closer to the real values.
Wearing a face mask against Covid-19 results in a reduction of social distancing
Authors: Cartaud Alice , Quesque François , Coello Yann
Published: December 2020

In the context of the Covid-19 pandemic, barrier gestures such as regular hand-washing, social distancing, and wearing a face mask are highly recommended. Critically, interpersonal distance (IPD) depends on the affective dimension of social interaction, which might be affected by the current Covid-19 context. In the present internet-based experimental study, we analyzed the preferred IPD of 457 French participants when facing human-like characters that were either wearing a face mask or displaying a neutral, happy or angry facial expression. Results showed that IPD was significantly reduced when characters were wearing a face mask, as they were perceived as more trustworthy compared to the other conditions. Importantly, IPD was even more reduced in participants infected with Covid-19 or living in low-risk areas, while it was not affected by the predicted health of the characters. These findings shed further light on the psychological factors that motivate IPD adjustments, in particular when facing a collective threat. They are also of crucial importance for policy makers as they reveal that despite the indisputable value of wearing a face mask in the current pandemic context, their use should be accompanied by an emphasis on social distancing to prevent detrimental health consequences.
An institutional analysis of graduate outcomes reveals a contemporary workforce footprint for biomedical master’s degrees
Authors: Hart Jack , McKinney Caleb C.
Published: December 2020

There is continued growth in the number of master’s degrees awarded in the life sciences to address the evolving needs of the biomedical workforce. Academic medical centers leverage the expertise of their faculty and industry partners to develop one to two year intensive and multidisciplinary master’s programs that equip students with advanced scientific skills and practical training experiences. However, there is little data published on the outcomes of these graduates to evaluate the effectiveness of these programs and to inform the return on investment of students. Here, the authors show the first five-year career outlook for master of science graduates from programs housed at an academic medical center. Georgetown University Biomedical Graduate Education researchers analyzed the placement outcomes of 1,204 graduates from 2014–2018, and the two-year outcomes of 412 graduates from 2016 and 2017. From the 15 M.S. programs analyzed, they found that 69% of graduates entered the workforce, while 28% entered an advanced degree program such as a Ph.D., allopathic or osteopathic medicine (M.D. or D.O.), or health professions degree. International students who pursue advanced degrees largely pursued Ph.D. degrees, while domestic students represent the majority of students entering into medical programs. Researchers found that a majority of the alumni that entered the workforce pursue research-based work, with 59% of graduates conducting research-based job functions across industries. Forty-nine percent of employed graduates analyzed from 2016 and 2017 changed employment positions, while 15% entered advanced degree programs. Alumni that changed positions changed companies in the same job function, changed to a position of increasing responsibility in the same or different organization, or changed to a different job function in the same or different company. Overall, standalone master’s programs equip graduates with research skills, analytical prowess, and content expertise, strengthening the talent pipeline of the biomedical workforce.
Electronic based reported anthropometry—A useful tool for interim monitoring of obesity prevalence in developing states
Authors: Gaskin Pamela S. , Chami Peter , Nancoo Tamara , Warner Patricia , Barrett Patrick , Mayers Yvette
Published: December 2020

Background

Wide participation in electronic surveys and reliable reporting of anthropometry can serve to reduce costs associated with monitoring of obesity among adolescents where resources are limited. We conducted a single school pilot study among Caribbean adolescents to assess use of electronic surveys and whether face to face encouragement could promote enrollment. In addition, we assessed students’ ability to reliably report simple anthropometry.

Methods

Students were provided with access to an electronic survey on anthropometry and food preferences regarding school-based food offerings. Responses to survey questions were presented as percentages. A sample of students also had their heights and weights measured after reporting these measures from memory. Intra-class correlation coefficients were used to assess reliability among measurers and Bland-Altman plots, consistency between student reported and recorded anthropometric measures and Support Vector Machine to assess robustness of anthropometry prediction models.

Results

Response rate to the electronic survey was low (9%). Students were able to interpret questions; open-ended options were inappropriately used 13% of the time. Post survey qualitative responses indicated displeasure with use of school-associated e-mail addresses. Concerns with confidentiality were expressed as well as preference for completion of surveys during school time. Students reliably reported anthropometry most measures fell within the 95% CI of Bland-Altman plots. SVM classified with a prediction accuracy of 95%. Estimates of overweight from recorded and reported measures were similar.

Conclusions

Adolescents are able to report simple anthropometry, and this can be used to help with monitoring of growth and overweight. Although they are capable of competently completing electronic surveys, school-based email is an ineffective contact tool. In-person school-based contact and administration of surveys are preferred. Adolescents can reliably report simple anthropometry that can be utilized for estimation of overweight/obesity prevalence. This method can be widely applied.
Molecular characterization and drug resistance patterns of Mycobacterium tuberculosis complex in extrapulmonary tuberculosis patients in Addis Ababa, Ethiopia
Authors: Diriba Getu , Kebede Abebaw , Tola Habteyes Hailu , Yenew Bazezew , Moga Shewki , Addise Desalegn , Alemu Ayinalem , Mohammed Zemedu , Getahun Muluwork , Fantahun Mengistu , Tadesse Mengistu , Dagne Biniyam , Amare Misikir , Assefa Gebeyehu , Abera Dessie , Desta Kassu
Published: December 2020

Background

Molecular characterization of Mycobacterium tuberculosis (MTB) is important to understand the pathogenesis, diagnosis, treatment, and prevention of tuberculosis (TB). However, there is limited information on molecular characteristics and drug-resistant patterns of MTB in patients with extra-pulmonary tuberculosis (EPTB) in Ethiopia. Thus, this study aimed to determine the molecular characteristics and drug resistance patterns of MTB in patients with EPTB in Addis Ababa, Ethiopia.

Methods

This study was conducted on frozen stored isolates of EPTB survey conducted in Addis Ababa, Ethiopia. A drug susceptibility test was performed using BACTEC-MGIT 960. Species and strain identification were performed using the Geno-Type MTBC and spoligotyping technique, respectively. Data were entered into the MIRU-VNTRplus database to assess the spoligotype patterns of MTB. Analysis was performed using SPSS version 23, and participants’ characteristics were presented by numbers and proportions.

Results

Of 151 MTB isolates, 29 (19.2%) were resistant to at least one drug. The highest proportion of isolates was resistant to Isoniazid (14.6%) and Pyrazinamide (14.6%). Nine percent of isolates had multidrug-resistant TB (MDR-TB), and 21.4% of them had pre-extensively drug-resistant TB (pre-XDR-TB). Among the 151 MTB isolates characterized by spoligotyping, 142 (94.6%) had known patterns, while 9 (6.0%) isolates were not matched with the MIRU-VNTRplus spoligotype database. Of the isolates which had known patterns, 2% was M.bovis while 98% M. tuberculosis. Forty-one different spoligotype patterns were identified. The most frequently identified SpolDB4 (SIT) wereSIT149 (21.2%), SIT53 (14.6%) and SIT26 (9.6%). The predominant genotypes identified were T (53.6%), Central Asia Strain (19.2%) and Haarlem (9.9%).

Conclusion

The present study showed a high proportion of MDR-TB and pre-XDR-TB among EPTB patients. The strains were mostly grouped into SIT149, SIT53, and SIT26. The T family lineage was the most prevalent genotype. MDR-TB and pre-XDR-TB prevention is required to combat these strains in EPTB. A large scale study is required to describe the molecular characteristics and drug resistance patterns of MTB isolates in EPTB patients.
Comparison of the transmission efficiency and plague progression dynamics associated with two mechanisms by which fleas transmit Yersinia pestis
Authors: Bosio Christopher F. , Jarrett Clayton O. , Scott Dana P. , Fintzi Jonathan , Hinnebusch B. Joseph
Published: December 2020

Yersinia pestiscan be transmitted by fleas during the first week after an infectious blood meal, termed early-phase or mass transmission, and again afterY.pestisforms a cohesive biofilm in the flea foregut that blocks normal blood feeding. We compared the transmission efficiency and the progression of infection after transmission byOropsylla montanafleas at both stages. Fleas were allowed to feed on mice three days after an infectious blood meal to evaluate early-phase transmission, or after they had developed complete proventricular blockage. Transmission was variable and rather inefficient by both modes, and the odds of early-phase transmission was positively associated with the number of infected fleas that fed. Disease progression in individual mice bitten by fleas infected with a bioluminescent strain ofY.pestiswas tracked. An early prominent focus of infection at the intradermal flea bite site and dissemination to the draining lymph node(s) soon thereafter were common features, but unlike what has been observed in intradermal injection models, this did not invariably lead to further systemic spread and terminal disease. Several of these mice resolved the infection without progression to terminal sepsis and developed an immune response toY.pestis, particularly those that received an intermediate number of early-phase flea bites. Furthermore, two distinct types of terminal disease were noted: the stereotypical rapid onset terminal disease within four days, or a prolonged onset preceded by an extended, fluctuating infection of the lymph nodes before eventual systemic dissemination. For both modes of transmission, bubonic plague rather than primary septicemic plague was the predominant disease outcome. The results will help to inform mathematical models of flea-borne plague dynamics used to predict the relative contribution of the two transmission modes to epizootic outbreaks that erupt periodically from the normal enzootic background state.
Purification and Characterization of Phenolic Antioxidant from Corncob Liquid Smoke
Authors: Suryanto Edi , Taroreh Mercy R.I. , Momuat Lydia Irma
Published: December 2020

This study aimed to purify and characterize the antioxidant activity of liquid smoke acquired from corncobs. The smoke of crude liquids was generated through pyrolysis and was purified through fractional and simple distillation. The liquid smoke was analyzed using crude fibres, cellulose, hemicellulose, lignin, antioxidant activity and total phenolic compounds. Gas chromatography-mass spectrometry (GC-MS) was employed to analyze the volatile compounds of liquid smoke. Fractional distillation exhibited the higher carbonyl and phenol content than simple distillation, and the overall acid content of fractional distillation was relatively lower. Moreover, the liquid smoke obtained from fractional distillation exhibited the higher total antioxidant and free radical scavenging activity than simple distillation. The GC-MS results showed different derivatives and phenolic compounds as the most dominant components of the liquid smoke of corncobs. The major antioxidant components of fractional distillation include 2-methoxyphenol, phenol, 2,5-dimethylphenol, 2-methylphenol, 2-methoxy-4-methylphenol, 4-ethyl-2-methoxyphenol and 4-ethylphenol, and those of simple distillation include phenol, 2-methylphenol, 2-methoxy- phenol, 2,6-dimethoxyphenol and 3-ethylphenol.
High Diffusivity Coefficient of Cyclic Voltammetric Behaviour of Semicarbazones and Thiosemicarbazones and their Antimicrobial Studies
Authors: Veeramalini J.B. , Brundha B.A. , Gowthami S. , Baskar G.
Published: December 2020

In this work, a series of N-hydroxy-2,6-diaryl-3-alkylpiperidin-4-one semicarbazones and thiosemicarbazones have been synthesized and also subjected towards cyclic voltammetric studies. The structure of reduced products was confirmed by FTIR, 1H & 13C NMR spectral analysis. Further products were also screened for antimicrobial activities and it shows high significant effect towards Aspergillus niger among the eight tested fungal species. The propency towards order of reduced products is observed sharply and it was established that irreversible reduction of two electron transfers has taken for all four synthesized compounds and highly pH dependent. Among the synthesized compound, thiosemicarbzones showed versatile features with high diffusion coefficient value in minimum power consumption of current function.
Determination of Essential Elements in Indian Rice Samples Before and After Washing by ICP-MS
Authors: Al-Mohaimeed Amal M. , Al-Harbi H.F.A.
Published: December 2020

In this study, a simple analytical technique was established to determine the content of essential elements (K, P, Mg, Ca, Zn, and Cu) in four samples of Indian rice. The influence of soaking, washing, and cooking on the essential elements concentration was determined. Twenty samples employed in this study, were contained in closed vessels and subjected to microwave-assisted digestion. Six elements (K, P, Ca, Mg, Zn, and Cu) were analyzed and determined through inductively coupled plasma mass spectrometry (ICP-MS). In the analyzed elements, the concentration of potassium elements and phosphate was the highest and that of zinc and copper was the lowest. The low values of the limits of detection (LOD) and limits of quantification (LOQ) with a relative standard deviation (%RSD) of 0.2-3% were observed.
Curd Mediated Facile Synthesis of ZnO/Ag/NiO Heterostructures and
Visible Light Assisted Photodegradation of Methylene Blue
Authors: Shubha J.P. , Prathibha B.S. , Jayalakshmi N.
Published: December 2020

Green fuel perished curd was used to synthesize ZnO/Ag/NiO ternary heterostructure with zinc nitrate,
nickel carbonate and silver nitrate as oxidizers. The obtained nanostructure was characterized by
various analytical techniques such as powder X-ray diffraction (PXRD), Fourier transform infrared
spectroscopy (FTIR), scanning electron microscopy (FESEM), transmission electron microscopy
(TEM). The particles and flakes composition of ZnO/Ag/NiO nanomaterials was confirmed.
Photocatalytic activity of ZnO/Ag/NiO was evaluated with methylene blue dye by source of light,
concentration of hydrogen ion, catalyst and dye concentrations. The obtained ZnO/Ag/NiO nanoparticles
reveal better catalytic property for the photodegradation of methylene blue dye under visible light.
Determination of Possible Potential Genotoxic Impurities in
Lenalidomide Drug Substance by Simple RP-HPLC Method
Authors: Gaddam Kishore , Kanne Shanker , Gundala Trivikram Reddy , Mamilla Yogeshwar Reddy , Nallagondu Chinna Gangi Reddy
Published: December 2020

This study is concerned with development and validation of HPLC method for the simultaneous
detection and quantification of methyl 2-(chloromethyl)-3-nitrobenzoate (MCN), methyl
2-(bromomethyl)-5-nitrobenzoate (MMM), methyl 2-(bromomethyl)-6-nitrobenzoate (MON), methyl
2-(bromomethyl)-4-nitrobenzoate (MPN) and 2-methyl-3-nitrobenzoic acid methyl ester (MNM), which
are the genotoxic impurities of lenalidomide. Chromatographic separation was accomplished using a
Waters HPLC system equipped with Ascentis Express F5 (150 × 4.6 mm, 2.7 μm) using mobile phase
composed of solvent A (0.1% perchloric acid): solvent B (methanol 80% and acetonitrile 20%); 55:45,
vol/vol. The selected impurities were detected using UV detector set at 210 nm. The standard curves
showed linearity in the range of concentrations 4.59-91.2 ppm (for MCN), 6.58-90.0 ppm (for MMM),
3.96-89.1 ppm (for MON), 6.47-89.7 ppm (for MPN) and 4.28-90.1 ppm (for MNM). The statistical
results of method precision, system precision, specificity, accuracy, ruggedness was found to be within
limits of acceptance. All the impurities were stable in lenalidomide test samples up to 24 h.
Spectrophotometric Determination of Zirconium by Dispersive Liquid-Liquid
Microextraction based on Solidification of Floating Organic Droplets
Authors: Ahmadov Intizam
Published: December 2020

In this study, a new method was developed for the spectrophotometric determination of zirconium by
the procedure of dispersive liquid-liquid microextraction based on the solidification of floating organic
droplets (DLLME-SFO). o-Nitrobenzene-azopyrocatechol (o-NBAP) and non-ionic surfactant (OP-10)
were used in the complex formation. At the first stage, a separation and solidification processes were
carried out, after which the solidified samples were examined by spectrophotometric method. The
effect of various parameters viz. pH effect, ion resistance, ligand effect, volume and type of extraction
and dispersion solution, extraction time and temperature effect were studied. The results of the experiment
were optimized with design programs. The calibration curve was linear ranging from 0.5 to70 μg L-1,
with a correlation coefficient of 0.998. The limit of detection (LOD) is 0.12 μg L-1, the limit of
quantification (LOQ) is 0.40 μg L-1 and the relative standard deviation (RSD) at 60 μg L-1 is 1.6%
(n=6). This method was also applied to determine zirconium in various water samples. The obtained
reextraction amount was 98-110%.
Isoxazoles-A Biocompatible Radical Scavenging Agents: Citrus Juice
Mediated Environmentally Benign Synthesis and Characterization
Authors: Raghavendra K.R. , Prabhudeva M.G. , Kumar A. Dileep , Kumar K. Ajay , Jayadevappa H.P.
Published: December 2020

This study demonstrates the efficient eco-friendly synthesis of a series of isoxazole derivatives 5a-h
through (3+2) annulation of chalcones 3a-h and hydroxylamine (4) in citrus juice medium. The
synthesized compounds were characterized by spectroscopic and CHN analysis, and assessed in vitro
for their antioxidant susceptibilities by DPPH and hydroxyl radical scavenging assays. The result
shows that compounds 5a, 5b, 5d and 5h have excellent DPPH and hydroxyl radical scavenging
activity in both assays and therefore these molecule could serve as potent antioxidant agents.
Ammonium Chloride: An Efficient and Environmentally benign Catalyst for
Knoevenagel Condensation of Carbonyl and Active Methylene Compounds
Authors: Tasqeeruddin S. , Asiri Yahya I. , lam M. Mujahid A
Published: December 2020

In the present study, a rapid, simple and an efficient procedure for the Knoevenagel condensation of
various carbonyl and active methylene compounds in ethanol at a moderate temperature in the presence
of a catalytic amount of an efficient, environmentally benign and inexpensive ammonium chloride is
reported. Simple reaction procedure, economic and ecofriendly catalyst, mild reaction conditions and
good to excellent yield of the products are the characteristic features of this study. The non-extractive
workup/purification, economic and environmentally benign catalyst make this operationally
straightforward procedure affordable for large scale.
Synthesis and Characterization of Nanoparticles of Iron(II) Gluconate Complex
Authors: Tandon Runjhun , Sharma Khushboo , Tandon Nitin
Published: December 2020

This work describes the green synthesis and the characterization of nanoparticles of iron(II) gluconate
complex, which is known to have antianemic properties. Iron(II) gluconate was synthesized by using
ferrous chloride and sodium gluconate. The aqueous extract of leaves of Cataranthus roseus was used
as a capping as well as reducing agent for the fabrication of nanoparticles of iron(II) gluconate complex.
The synthesized Fe(II) complex and its nanoparticles were characterized by UV-visible, FTIR, SEM
and FESEM techniques. Mechanism of plant leaf mediated synthesis has also been discussed.
Hydrolytic Degradation Study of Rivaroxaban: Degradant Products Identification by
LC-MS Isolation by Prep-HPLC and Characterization by HRMS, NMR and FT-IR
Authors: Kumar Reddy G. Mahesh , Korupolu Raghu Babu , Babu B. Kishore , Murty Singamsetti J.C.M.K.N.N. , Rumalla Chidananda Swamy , Kaliyaperumal Muralidharan , Doddipalla Raju , ijay Rajani V
Published: December 2020

Present work illustrates the stress degradation behaviour of rivaroxaban under hydrolytic, oxidative,
thermal and photolytic conditions as per ICH guidelines. Under thermal and photolytic conditions
drug had a fair stability where as in other stress conditions degradation products were observed. Initial
identification of the degradation products was performed by hyphenated mass spectrometry coupled
to ultra-performance liquid chromatography (UPLC-MS) and mass directed auto purification (MDAP)
was used for isolation. Various 1D and 2D nuclear magnetic resonance (NMR) were performed to
characterize the degradation products which were assisted by FT-IR and HRMS data. Two novel
degradant products were observed in hydrolytic conditions, isolated and characterized by spectroscopic
techniques as (R)-2-(2-((4-((3-(5-chlorothiophene-2-carboxamido)-2-hydroxypropyl)amino)phenyl)-
amino)ethoxy)acetic acid (DP-2) (m.w. of 427.90 g/mol and m.f. C18H22N3O5SCl), and
5-chlorothiophene-2-carboxylic acid (DP-3) (m.w. 161.95 g/mol and m.f. C5H3O2SCl). Additionally,
two more degradation products were observed in basic and acidic conditions, viz. (R)-5-chloro-N-(2-
hydroxy-3-((4-(3-oxomorpholino)-phenyl)amino)propyl)thiophene-2-carboxamide (DP-1) (m.w.
409.09 g/mol and m.f. C18H20N3O4SCl) and (S)-2-(2-((4-(5-((5-chlorothio-phene-2-
carboxamido)methyl)-2-oxooxazolidin-3-yl)phenyl)amino)ethoxy)acetic acid (DP-4) (m.w. 453.08g
/mol and m.f. C19H20N3O6SCl) are already reported.
Isolation and Characterization of Bioactive Anti-inflammatory
Flavonoids from Arisaema tortuosum Tubers
Authors: Chakraborty Priyanka , Mazumder Kamalika , Bala Nripendra Nath , Das Sudipta
Published: December 2020

Present study was focused on the isolation and characterization of the anti-inflammatory compound(s)
from the methanolic extracts of Arisaema tortuosum tuber by column chromatography, TLC, FT-IR,
1H, 13C NMR and HR-MS. Among all the fractions obtained A. tortuosum fraction 3 (PC-1) and
fraction 5 (PC-2) showed significant in vivo anti-inflammatory activity. This study endorsed that the
isolated bioactive compound PC-2 showed better anti-inflammatory activity at a dose of 25 mg/Kg
BW. The results indicate that PC-2 and PC-1 methanolic extract of A. tortuosum tuber may be competing
for the tent in the therapy of inflammatory ailments.
Green Production of Potassium Sulfate by Hydrothermal Carbonization of Carrageenan
Authors: Bantang Jose Paolo O. , Camacho Drexel H.
Published: December 2020

A novel green method of producing potassium sulfate from a sustainable source is described. Aqueous
carrageenan is subjected to hydrothermal carbonization inside a pressure vessel. Separation of the
liquid component from the hydrochar followed by evaporation to dryness and treatment with ethanol
afforded potassium sulfate. Characterization using SEM-EDX, XRD and Raman spectroscopy confirms
the identity of potassium sulfate in the form of K3H(SO4)2. The green process allows the facile release
of sulfate ester group from the carrageenan chains and combining with the residual potassium ions in
the carrageenan. The new method allows for the simplification of the process of producing potassium
sulfate in an environmental friendly way and using a renewable source.
Study of Sintering Temperature on Dielectric Properties of
CaCu3Ti4O12 Materials Prepared by Sol-Gel Method
Authors: Sue-Aok W. , Khemprasit J.
Published: December 2020

CaCu3Ti4O12 (CCTO) powder was prepared by sol-gel process using acetic acid as a solvent and also
as cross-linking agent by varying the sintering temperature (1000-1150 ºC) for 3 h. The dried gels
were characterized by TG-DTA and FT-IR techniques. The sintered samples were characterized by
XRD, SEM techniques and impedance analyzer for dielectric properties measurement. The sample
showed the perovskite structure with small amounts of TiO2 and CuO phases. The best dielectric
properties (εr = 1.38 × 104 and tan δ = 0.13 at 10 kHz and room temperature) were observed in the
CCTO pellets calcined at 800 ºC for 3 h and sintered at 1100 ºC for 3 h.
NMR & Electronic Spectra, NLO, FMO, NBO and Thermodynamic Properties of
Pentachlorophenol: An Experimental and Theoretical Investigation
Authors: Ramana Rao P. Venkata , Srishailam K. , Ramesh G. , Reddy B. Venkatram , Rao G. Ramana
Published: December 2020

Proton (1H) and Carbon-13 (13C) nuclear magnetic resonance spectra of pentachlorophenol were
measured. Corresponding chemical shifts were generated using Gauge Independent Atomic Orbital
(GIAO) approach, as a part of density functional theory (DFT) application. UV-visible spectrum was
measured in the spectral range 200-400 nm and compared with its simulated counterpart generated,
using time-dependent density functional theory (TD-DFT). Frontier molecular orbital (FMO) approach
was used to understand origin of UV-visible spectrum and chemical reactivity of the molecule. The
non-linear (NLO) behaviour was studied by evaluating the values of dipole moment, polarizability
and hyperpolarizability. Molecular electrostatic potential (MESP) surface was drawn to locate reactive
sites of pentachlorophenol. Natural bond orbital (NBO) analysis of the molecule was made to examine
stability of the molecule arising from charge delocalization. Thermodynamic parameters of the molecule
were also calculated.
Recent Advances in Catalysis of Hantzsch and Related Synthesis of
1,4-Dihydropyridines and Polyhydroquinolines: A Brief Overview
Authors: Sarma Madhushree Das , Ghosh Subhojit
Published: December 2020

Pharmacologically privileged 1,4-dihydropyridine (DHP) framework is a common playground of
synthetic and medicinal chemists. Despite its widely general applicability popular Hantzsch
methodology for the construction of this novel heterocyclic moiety suffers from limitations like long
reaction time and poor yield of the product. Circumvention of these problems mainly relies on
employment of a plethora of catalysis for improvement of the reaction. Objective of this mini review
is to critically highlight the salient aspects of such catalysis during the past two decades.
Synthesis and Application of Novel Coal Fly Ash Supported C-Doped
TiO2-SnO2 Photocatalytic Nanocomposite for the Removal of Dyes in Water
Authors: Sambakanya S. , Nyamukamba P. , Katwire D.M. , Mungondori H.H. , Mukumba P. , Okoh O.
Published: December 2020

Herein, the preparation, characterization and applications of novel carbon doped titanium dioxide and
tin oxide nanocomposite supported on coal fly ash (C-TiO2-SnO2/CFA) are reported. The nanocomposite
nanoparticles were successfully synthesized by a sol-gel method and calcined at 550 ºC. XRD analysis
showed that SnO2 nanoparticles were polycrystalline in nature and TiO2 had both anatase and rutile
phases. Diffuse reflectance spectra showed that carbon doping reduced the band gap of TiO2 from 3.19
eV to 2.78 eV. The nanoparticles′ photocatalytic activity was evaluated using methyl orange and
methylene blue dyes, under both UV light and solar irradiation at different pH, pollutant concentration
and photocatalyst loading. High photodegradation rates of methyl orange were achieved under visible
light. The optimum loading of composite photocatalyst was 0.4 g with removal efficiencies of 97.75%
for methyl orange and 99.25% for methylene blue after 3 h. High removal efficiencies were achieved
for methyl orange at pH 3 and for methylene blue at pH 10.
Hazai vállalkozások csődjének előrejelzése a csődeseményt megelőző egy, két, illetve három évvel korábbi pénzügyi beszámolók adatai alapján
Authors: Nyitrai Tamás
Published: December 2020

A cikk azt vizsgálja, hogy milyen besorolási pontossággal jelezhető előre a hazai vállalkozások csődje az azt megelőző egy, két, illetve három évvel korábbi éves beszámolók adatai alapján. A kutatási kérdés megválaszolásához egy, a hazai szakirodalomban még kevésbé elterjedt nem paraméteres módszer: a k legközelebbi szomszéd eljárást alkalmazza a szerző. A tanulmány külön figyelmet szentel a legjobb előrejelző teljesítmény elérését biztosító paraméterek (szomszédok száma, távolságmérték) optimális megválasztására is. A számításokat egy hazai vállalkozásokból álló, ezerelemű véletlen minta adatain végezték el. Nemzetközi kutatási eredmények szerint nagyobb találati arány érhető el, ha a csődmodellek input változói között nemcsak a csőd előtti év adatait használják fel, hanem az azt megelőző 2-3 év pénzügyi mutatóit is. E kérdés vizsgálatát is célul tűzi ki a tanulmány.
Alcoholic Hepatitis and COVID-19: The Question of Steroids
Authors: Zelman Sara , Holzwanger Erik , Malik Raza , Dickstein Aaron
Published: December 2020

Severe acute respiratory syndrome coronavirus 2/novel coronavirus-19 (COVID-19) has rapidly become a global pandemic since the first cases from Wuhan, China, were reported in December 2019. The pandemic has made it more challenging to treat various gastrointestinal disorders, including acute alcoholic hepatitis (AH). One of the mainstays of treatment for severe AH involves corticosteroids (mainly prednisolone). A concern when treating with prednisolone is the worsening of underlying infection. There may be an additional risk in treating COVID-19–infected patients. We present a case of a patient with severe acute AH and concomitant COVID-19 infection who did well with corticosteroid therapy without evidence for worsening infection.
Pátria, nação e autoritarismo
Authors: Souza Ferraz Felipe , Regina Nunes Silvia
Published: December 2020

O presente trabalho tem como objetivo analisar o discurso do Punk Rock brasileiro sobre a Ditadura Civil-Militar (1964–1985) a partir dos princípios e procedimentos do campo de pesquisas da Análise de Discurso materialista. Tomam-se as canções Anistia e Não questione (Pior que antes, 1988) dos Garotos Podres, Anos 70 (Cenas de um novo país, 1990) da banda 365, e Pátria Amada (Adeus carne, 1987) dos Inocentes, que foram lançadas após 1985 e que apresentam em sua constituição formulações que remetem a práticas discursivas como o patriotismo-nacionalismo. No procedimento de análise, realizou-se a seleção de recortes de sequências discursivas que apresentam uma recorrência de palavras e expressões como “amor à pátria” e “nação”. A análise dos recortes discursivos mostrou que são produzidos efeitos de crítica e denúncia nas canções, em relação ao período autoritário, a partir da ressignificação de enunciados inscritos, contraditoriamente, em redes de memórias da ditadura e da arte.
Corpos e cartografias da ingovernabilidade na arte e na educação
Authors: Do Valle Lílian
Published: December 2020

Resumo: O corpo está por toda parte: ele é aquele que «está irreparavelmente aqui» onde estou, eu que não «posso me deslocar sem ele», já disse o filósofo. Talvez por isso mesmo seja tão antigo e tão insistente o movimento que, multiplicando as metáforas para dizer sua presença, visa de fato a maior parte do tempo seu ocultamento. Assim, se é possível falar aqui de uma cartografia, ela sem dúvida designará o intenso movimento filosófico de ocultamento do corpo, que paradoxalmente dá a ver o que tanto se buscou evitar: é que o corpo sempre resiste, insistindo em se fazer disponível aos «mundos múltiplos e divergentes» que a cada vez a arte aproxima.

Palavras-chave: Corpo. Movimento. Formação humana.

Cartography of the body and unmanageability

Abstract: The body is everywhere: he is «is irreparably here» where I am, for  «I cannot move without him», as the philosopher said. Perhaps it is why this ancient and persistent movement that multiplies the metaphors to tell its presence seeks in fact its concealment most of the time. Thus, if it is possible to speak about a cartography, it will undoubtedly designate the intense philosophical movement of body concealment, which paradoxically hints at what it has sought so much to avoid: is that the body always resists, insisting on making itself available to « multiple and divergent worlds»  which art approaches each time.

Keywords: Body. Mouvement. Human Formation.

Cartographies du corps et de l’ingovernabilité

Résumé: Le corps est partout: « il est ici irréparablement» où je suis, car «je ne peux pas me déplacer sans lui», comme le philosophe l’a dit. Et c’est peut-être là la raison par laquelle, à force de multiplier les métaphores pour signaler as présence, ce que lui vise, finalement, la plupart du temps est bien son effacement. Ainsi, s’il nous est permis de parler de cartographie, elle devra sans doute désigner cet intense mouvement philosophique d’oubli du corps, qui finalement révèle ce qui l’on a tellement voulu éviter : car le corps résiste, à chaque fois, et qu’il insiste de se faire disponible aux «mondes multiples et divergents» que, à chaque fois, l’art rend présent.

Mots-clés: Corps. Mouvement. Formation humaine.
Educação Filosófica e Magia: A experimentação de outros processos de subjetivação
Authors: Perencini Tiago Brentam
Published: December 2020

Resumo: Defendo que a relação entre filosofia e magia possibilita processos de subjetivação para experimentarmos outro tipo de educação filosófica, que possa resistir à biopolítica e ao neoliberalismo na contemporaneidade. Faço uma caracterização de ambos como um tipo de poder enfeitiçador que se enraizou em nossa subjetividade. Partindo de uma leitura anarqueológica sobre o pensamento de Michel Foucault, procuro conceituar os processos de subjetivação, evidenciando como a cronologia ocidental silenciou a magia, experiência-limite para a filosofia, da mesma maneira que teço algumas considerações sobre como esse paradigma nos conduz a experimentar outro tipo de educação filosófica, mais atenta à erótica e ao resgate de saberes e práticas originárias.

Palavras-Chave: Educação filosófica. Magia. Processos de subjetivação. Biopolítica. Michel Foucault.

Philosophical Education and Magic: The experimentation of other subjectivation Processes

Abstract: I argue that the relationship between philosophy and magic enables subjectivation processes for us to experiment with another kind of philosophical education, which can resist contemporary biopolitics and neoliberalism. I characterize them both as a kind of bewitching power that has taken root in our subjectivity. Starting from an archeological reading on Michel Foucault's thought, I seek to conceptualize the processes of subjectivation, highlighting how Western chronology has silenced magic, the limiting experience for philosophy, just as I make some considerations on how this paradigm leads us to experiment with another kind of philosophical education, more attentive to the erotica and to the rescue of originary knowledge and practices.

Keywords: Philosophical education. Magic. Subjectivation processes. Biopolitics. Michel Foucault.

Éducation philosophique et Magie : l’expérience d’autres processus de subjectivation

Résumé: Je défends que la relation entre la philosophie et la magie nous permet d’avoir des processus de subjectivation pour expérimenter un autre type d’éducation philosophique, qui peut résister à la biopolitique et au néolibéralisme dans la contemporanéité. Je fais une caractérisation des deux comme un type de pouvoir enchanteur qui s’enracine dans notre subjectivité. En partant d’une lecture anarchéologique sur la pensée de Michel Foucault, je cherche à conceptualiser les processus de subjectivation, en mettant en évidence la manière dont la chronologie occidentale a mis au silence la magie, expérience-limite pour la philosophie, de la même manière que je tisse quelques considérations sur la manière dont ce paradigme nous conduit à expérimenter un autre type d’éducation philosophique, plus attentif à l’érotique et au sauvetage des savoirs et pratiques originaires.

Mots-clés: Éducation philosophique. Magie. Processus de subjectivation. Biopolitique. Michel Foucault.
Real-time 3D Perception of Scene with Monocular Camera
Authors: Saleh Shadi , Manoharan Shanmugapriyan , Hardt Wolfram
Published: December 2020

Depth is a vital prerequisite for the fulfillment of various tasks such as perception, navigation, and planning. Estimating depth using only a single image is a challenging task since the analytic mapping is not available between the intensity image and its depth where the features cue of the context is usually absent in the single image. Furthermore, most current researchers rely on the supervised Learning approach to handle depth estimation. Therefore, the demand for recorded ground truth depth is important at the training time, which is actually tricky and costly. This study presents two approaches (unsupervised learning and semi-supervised learning) to learn the depth information using only a single RGB-image. The main objective of depth estimation is to extract a representation of the spatial structure of the environment and to restore the 3D shape and visual appearance of objects in imagery.
Numerical Simulation of Joining Ropes by Sewing Stitches
Authors: Kyosev Yordan , Čapek Lukáš
Published: December 2020

Braided structures are widely used in numerous contexts including everyday practice. In most cases, rope ends are knotted to form various types of loops or tie them to rigid body parts; however, knots take up space that may not be available in some application scenarios, thus making them unsuitable for certain purposes. Hence, this paper introduces first development steps of a method for the numerical simulation of rope ends connected by sewing stitches.
Camera-based Visual Rope Inspection
Authors: Novak Gregor
Published: December 2020

The manual visual inspection of ropes, both wire and fibre ropes, is still the preferred method of choice for the inspection of suspension means and for safety assessment. As the ropes are usually of a longer length of several hundred metres, manual visual inspection can lead to undetected defects due to inspector fatigue. On the other hand, the inspector only sees the surface facing him and there is no recorded data of the inspection that can be used for clarification in case of a rope breakage. Due to these points, it is advantageous to perform an automated camera-based inspection where several cameras are arranged around the rope. Especially with high modular fibre ropes, which are used in more and more fields of application, visual inspection is a decisive point in the evaluation of operational safety. IFT is currently conducting and has conducted research projects in this field of work.
KLASIFIKASI STATUS KEMISKINAN RUMAH TANGGA DENGAN METODE SUPPORT VECTOR MACHINES (SVM) DAN CLASSIFICATION AND REGRESSION TREES (CART) MENGGUNAKAN GUI R (Studi Kasus di Kabupaten Wonosobo Tahun 2018)
Authors: Nuzula Lutfia , Prahutama Alan , Hakim Arief Rachman
Published: December 2020

The poor are people who have average monthly expenditures per capita below the poverty line. Wonosobo District became the poorest district in Central Java in 2011-2018, although the percentage of poor people has decreased every year. It cannot be separated from the efforts of the Wonosobo District Government to overcome poverty through various programs. This study classified households in Wonosobo District in 2018 as poor and non-poor based on influencing factors. This study used the Support Vector Machines (SVM) method to be compared with the Classification and Regression Trees (CART) method. It used the data from the 2018 National Socio-Economic Survey of Central Java with a total of 795 observations. Result of the research using the SVM method and the RBF kernel, the classification accuracy reaches 89.82% then the classification accuracy using the CART method reaches 87.08%. GUI designed by RShiny package can make easier for users to analyze the SVM and CART with the valid output.
Trzy wymiary użytecznego miasta
Authors: Maciej Błaszak Maciej Błaszak , Artur Fojud Artur Fojud
Published: December 2020

The paper analyzes three dimensions of the usable city: experiential, functional and rational. These dimensions are connected with three types of mental experiences, respectively, sensational, perceptional and conceptual, and with three neural networks: salience, central executive and default mode. It is argued that sensations refer to the physical space of the city, perceptions to the functional niche of the city, and concepts to the values implemented in the brain and recognized in the urban objects during their usage. The notion of the usable city is tightly connected with the notion of the happy city: three brain networks computing the information about dimensions of the usable city generate three parameters of happiness: pleasure, satisfaction, and one’s potential realization.
Zabrnięcie w rewolucję: marksizm analityczny, racjonalność i działanie zbiorowe
Authors: Bertram Christopher , Carling Alan
Published: December 2020

Right-wing critics have long used the theory of rational choice to pour scorn on the Marxist theory of revolution, because, they say, free-rider considerations will deter any rational self-interested worker from engaging in revolutionary action. This contention poses an especial problem for Analytical Marxists, who also utilise rational choice models to understand the micro-foundations of collective action. It turns out, however, that if the worker’s decision to join a collective action is conceived more realistically, not as a once-for-all commitment, but as a recurrent process affected continuously by the actions of others, then a much richer repertoire of outcomes begins to appear within the theory – matching those found in history itself. This paper develops simple models of collective action that display this broader range of possibilities. These include convergence to a stable level of collective engagement, oscillation over time between different levels of engagement, and truly chaotic behaviour, in which levels of engagement are never repeated.
Od feudalizmu do afrykańskiego sposobu produkcji. Problem typologii przednowoczesnych peryferyjnych społeczeństw europejskich
Authors: Babinskas Nerijus
Published: December 2020

I assert that methodological nationalism (national paradigm) is one of the main reasons of methodological inertia of the current historiography especially in the area of the post-communist European countries. In the current article I argue that comparative history could be a bridge between conventional (mainstream) historiography and approaches of so-called macrohistory. In this context typology should be treated as one of possible methods of comparative history. The most traditional approach of medievalists to articulate classification of pre-modern European societies is consider whether particular pre-modern society is feudal or not. However I argue that this approach is quite complicated because of ambiguity and polysemy of the term. There are at least several Marxist and non-Marxist alternatives like the tributary mode of production, patrimonialism versus feudalism dichotomy or the so-called type/model of early Central European state. The application of the concept of the African mode of production in the case of typology of some European pre-modern peripheral societies despite of its paradoxically looking etimology also is plausible.
Próba analizy porównawczej litewskiej gospodarki folwarczno-pańszczyźnianej i latynoamerykańskiej gospodarki hacjendowej od II połowy XVIII do II połowy XIX wieku w kontekście kapitalistycznego systemu-świata
Authors: Darius Žiemelis Darius Žiemelis
Published: December 2020

The paper for the first time in historiography compares the Lithuanian manorial-serf economy and Latin American hacienda economic systems in the second half of the 18th century – the second half of the 19th century in the context of the capitalist world system (CWS). The main focus will be on the explication in macro level of similarities and differences of structures and development trends of these systems. The analyzed period – is the stage of both the dominance and intensification of manorial-serf economy in Lithuania and predominance and intensification of hacienda economy in Latin American countries and it was determined by the same factor of the industrial revolution. The study confirms the thesis that these economic systems belonged to typologically close economic type (were focused on the serfdom method of production) in the global division of labor. It shows that both Lithuanian manorial-serf economy and haciendas of Latin America were not typical feudal enterprises, but had only peripheral capitalism features.
The compatible action graphs for finite cyclic 2-groups
Authors: Sulaiman S.A. , Mohamed M.S. , Yusof Y. , Shahoodh M.K. , Hamid H.A.
Published: December 2020

A graph namely the compatible action graph is introduced by extending the results on the compatible pairs of actions for cyclic 2-groups. Some properties of compatible action graphs are presented. In addition, the special types of compatible action graphs are given.
Mapbox.js: an engaging open-source web mapping tool for teaching data visualization theory
Authors: Miller Meg
Published: December 2020

This review provides an overview of web mapping tools and discusses why and how Mapbox.jshas been an effective tool in the delivery of one-shot instructional sessions on data literacy andvisualization theory in an academic library context.
Circuitos cortos de comercialización: el juego entre lo disponible y lo posible en la agricultura familiar
Authors: Paz Raúl Gustavo , Infante Camila Mariana
Published: December 2020

Los circuitos cortos de comercialización constituyen nuevas formas de organización de la agricultura familiar. Sin embargo, cuando estos son entendidos sólo desde las ferias, se diluyen sus lógicas productivas desplegadas sobre las cuales se sustenta el proceso de comercialización propiamente dicho. Este artículo tiene como objetivo identificar las dinámicas desarrolladas por una familia productora en contextos cotidianos de Santiago del Estero (Argentina), tendientes a generar circuitos cortos. Dos son los ejemplos de estos circuitos que serán examinados, uno en el marco de una feria y otro en tiempos de pandemia, que intentarán demostrar que las construcciones de tales mecanismos comerciales responden a un balance entre la realidad disponible (de recursos endógenos y exógenos, de mercado, redes sociales, tecnología, conocimientos propios, etc.) y las posibilidades que permite desplegar el potencial de la agricultura familiar. Se utiliza la metodología cualitativa abordando un estudio de caso y las técnicas desarrolladas fueron las visitas de campo, entrevistas en profundidad y observaciones directas.