bluuebunny/crossref_metadata_2025 huggingface dataset:
Did admissions caused by respiratory infections and asthma decrease during the COVID-19 pandemic?
Authors: Onay Zeynep , Mavi Deniz , Ayhan Yetkin , Oksay Sinem Can , Bas Gulay , Girit Saniye
Published: October 2021

Background: COVID-19 outbreak lead to nationwide lockdown on the March
16th, 2020 in Turkey. We aimed to quantitively determine the change in
frequency of upper and lower respiratory tract infections and asthma in
pediatric population associated with COVID-19. Methods: The electronic
medical record data of pediatric population admitted to the emergency
department (ED), outpatient and inpatient clinics and pediatric
intensive care unit (PICU) were analyzed with the diagnosis of
Influenza, upper and lower respiratory tract infections (URTI, LRTI)
acute bronchiolitis and asthma. The data of the first year of the
pandemic was compared with the previous year. Results: In total 112496
admissions were made between April 1, 2019 and March 31, 2021 in our
hospital. A decline was observed in ED admissions (-73%) and outpatient
clinic (-70%) visits, hospitalizations (-41.5%) and PICU admissions
(-42%). The admissions with the diagnosis of Influenza and URTI had a
decline from 4.26% to 0.37% (p=0.0001), and from 81.54% to 75.62%
(p=0.0001), respectively. An increase was observed in the LRTI, acute
bronchiolitis and asthma (from 8.22% to 10.01% (p=0.0001), from 2.76%
to 3.07% (p=0.027) and from 5.96% to 14% (p=0.0001), respectively).
Conclusions: A dramatic decrease was observed in the number of
admissions to ED and inpatient clinics and outpatient clinic visits and
PICU admissions, and, when the rates of admissions were compared, the
general rate of admissions to ED showed a decrease while inpatient,
outpatient clinics and PICU admissions demonstrated an increase during
the pandemic.
The dilemma of fibrous dysplasia versus chronic osteomyelitis of the posterior mandible: a case report
Authors: Alabdeen Ebtihal Zain , Abdelfattah Ashraf , Kordi Osama , Al-Sadhan Ra'ed
Published: October 2021

The clinical and radiographic dilemma of fibrous dysplasia versus
osteomyelitis is highlighted in this case of a 4-year-old girl with a
bony hard swelling over the angle of the mandible. Differences between
histopathological appearance and radiographic presentation with the
possible differential diagnosis were discussed and compared with
previous studies.
Niclosamide - a promising treatment for COVID-19
Authors: Singh Shivani , Weiss Anne , Goodman James , Fisk Marie , Kulkarni Spoorthy , Lu Ing , Gray Joanna , Sommer Morten , Cheriyan Joseph
Published: October 2021

Vaccines have reduced the transmission and severity of COVID-19 but
there remains a paucity of efficacious treatment for drug resistant
strains and more susceptible individuals. Repurposing existing drugs is
a timely, safe and scientifically robust method for treating pandemics
such as COVID-19. Here, we review the pharmacology and scientific
rationale for repurposing niclosamide, an anti-helminth already in human
use as a treatment for COVID-19. In addition to potent antiviral
activity, niclosamide has shown pleiotropic anti-inflammatory,
antibacterial, bronchodilatory and anticancer effects in numerous
pre-clinical and early clinical studies. The advantages and rationale
for nebulised and intranasal formulations of niclosamide, which target
the site of primary infection in COVID-19, are reviewed. Finally, we
discuss the TACTIC-E clinical trial, an international COVID-19
therapeutic platform trial for the use of licensed and novel therapeutic
agents, which is investigating niclosamide as a promising candidate
against SARS-CoV-2.
Pueblos Mágicos: resultados y realidades del México actual. Huautla de Jiménez, Oaxaca
Authors: Mascarúa Alcázar Miguel Antonio , Aguilar Soriano Cinthya del Carmen , Orea Barragán Simón , Juárez Pérez Sagrario
Published: October 2021

Problemática: el Programa Pueblos Mágicos (PMM) fue una iniciativa del Gobierno federal mexicano, que mediante el apoyo financiero buscó acelerar el turismo en las zonas geográficas que tuvieran atractivo, para impulsar el desarrollo económico y social. Y aunque en muchos casos ha tenido éxito, este trabajo expone el caso de Huautla de Jiménez en Oaxaca, un municipio mexicano en el que, según la percepción de los encuestados, no se logró el éxito. Objetivo: exponer las opiniones de los turistas, empresarios y pobladores acerca de los esfuerzos del Gobierno municipal por crear acciones que permitan atraer al turismo en la zona. Materiales y métodos: el presente estudio es descriptivo y se encuestaron 399 personas (145 en general, 110 turistas y 140 empresarios, más cuatro autoridades municipales) elegidas a conveniencia. Resultados: las respuestas de los encuestados reflejan que la distinción de Pueblo Mágico no ha transformado sustancialmente la actividad económica del lugar y la marginación y la pobreza siguen siendo problemas acuciantes para el municipio. También es evidente que las administraciones municipales no han utilizado los recursos financieros de la Federación para modernizar y promover la actividad económica. Discusión: en muchas regiones, el distintivo de Pueblo Mágico ha creado actividades económicas que han permitido un grado de desarrollo social. Es interesante encontrar un municipio que no ha tenido éxito y que parece perpetuar los esquemas de pobreza que han caracterizado a Huautla de Jiménez. Conclusiones: tiene una geografía imponente y una cultura que atrae al turismo; sin embargo, la lucha de poderes políticos se traduce en la escasez de efectividad para la aplicación de medidas de bienestar. Es necesario un programa de capacitación a todos los involucrados para que mejoren la atención al turismo y, por consiguiente, la pecepción y la vigilancia del uso de los recursos financieros de la Federación.
Structure and toughening mechanical properties of multi principal component high entropy alloy
Authors: Dai Junhao
Published: October 2021

At present, the strength and toughening degree of the multi-principal element
high entropy alloy are not high, and the plastic deformation capacity is
poor. In order to solve this problem, the structure and mechanical
properties of the multi-element high entropy alloy were studied. The
micro-structure and strengthening mechanism of the alloy were studied. By
establishing a reliable random solid solution model and using the first
principle to calculate the phase structure, thermodynamics, and elastic
properties of the alloy, theoretical guidance is provided for the design and
development of new high entropy alloy. The high entropy alloy system with
high specific strength and high tensile plasticity was prepared, and its
strengthening and toughening mechanism was studied. The experimental
results show that with the increase of Zr content, the fracture strength of
multi-component high entropy alloy first increases and then decreases. When
it reaches a fixed value, the comprehensive mechanical properties of the
alloy are the best. Compared with the two literature methods, the tensile
strength of this method is 250 MPa, and the work hardening after yielding
makes the alloy have higher strength and better plastic deformation ability.
Coherent synthesis of ultrashort pulse fiber laser based on balanced difference method
Authors: Li Fangju
Published: October 2021

The output power of the fiber laser can be increased by synthesizing the
output beam, but the problem of low output power is caused by the poor
ability of controlling bandwidth in the current synthesis research.
Therefore, a coherent synthesis method of ultrashort pulse fiber laser
based on balanced difference method is proposed. The balance difference of
fiber combiner is divided into different modules, including data exchange
and acquisition, circuit balancing, phase compensation, etc. Select
appropriate ad conversion chip, use Ethernet chip W5300, design data
exchange, ensure the normal use of data acquisition function, in the signal
preprocessing module, use band-pass filter to filter out unnecessary
frequency components, use AD603 to design front-end balancing circuit,
design signal separation circuit, separate AC and DC signals, use active
phase lock. The phase compensation of each laser is realized by the fixed
technology, and the coherent synthesis of ultrashort pulse fiber laser is
realized by the fiber combiner. The experimental results show that, compared
with the traditional coherent synthesis method, the output power of the
coherent combination method based on balanced difference method is about 900
kW, which has higher output power and better control bandwidth. It provides
a theoretical basis for practical application.
Real time numerical simulation of thermal conductivity of marine gas turbine lubricating oil under complex sea conditions
Authors: Xu Donghua , Wang Yongxiang , Su Yidan , Li Jubao
Published: October 2021

Due to the influence of the marine environment, marine gas turbine lubricants
are required to have good thermal conductivity. However, the current
research on marine gas turbine lubricants mainly focuses on its corrosion
resistance. Therefore, a real-time numerical simulation of thermal
conductivity of marine gas turbine lubricating oil under complex sea
conditions is proposed. In this paper, the turbulent kinetic energy
equation and the loss transport equation are obtained by introducing the
turbulent column and the k-e model. The Nusselt number in the k-e model can
be regarded as the ratio of convective heat transfer between fluid and
solid wall and internal heat transfer of fluid. According to the equations,
the transient heat transfer model of vertical moving contact parts is
established, and the heat transfer relationship between lubricating oil and
plug group is obtained. The experimental results show that the area of low
temperature in this scheme is larger than that in the traditional scheme,
which means that the efficiency of impingement cooling is improved after the
introduction of the pin structure in the impingement cooling design. The
heat transfer process on the suction surface is stronger than that on the
pressure surface, and the heat transfer coefficient of the blade increases
continuously, reaching the local maximum value at about X/L = 0.65.
Dynamic numerical study on phase change thermal storage heat transfer
Authors: Cui Jie , Wang Guofeng , Guo Zhitang , Yang Shuo , Pan Honggang , Shi Jianjun , Xu Youning
Published: October 2021

Targeted at the poor heat transfer effect of the phase change thermal storage
heat exchanger due to the low thermal conductivity of the phase change
material, a fin-tube type phase change thermal storage heat exchanger has
been proposed in the study. A 2-D model of the phase-change heat storage
unit was established, and the dynamic heat transfer law of the melting and
solidification of the phase change material, and the influence of the fin
structure size on the heat storage/release performance of the heat exchanger
were numerically analyzed. The results show that in the area close to the
tube wall, the smaller the fin spacing, the larger the thickness, the faster
the phase change heat storage/release speed, and the better heat transfer
effect. In the central area of the phase change material, the greater the
fin spacing and thickness, and the better the heat transfer effect of the
phase change heat storage/release. The area close to the outer wall has the
smallest temperature change, and the heat storage/release effect is the
worst. Therefore, the use of energy storage heat exchangers with gradual fin
thickness and spacing is an effective method to improve the heat transfer
efficiency of existing equipment. In addition, in order to improve the heat
exchange effect of the edge area of the phase change, its structure could be
changed or the heat exchange form can be increased.
Mechanical transmission system of loader based on hydraulic hybrid technology
Authors: Wang Haifei , Yang Shimin , Lu Tan
Published: October 2021

In order to solve the problems of high energy consumption, high noise and
pollution gas emission existing in the mechanical transmission system of
loader, a research on the mechanical transmission system of loader based on
hydraulic hybrid technology is proposed. The mechanical energy and heat
energy are generated by the mechanical operation of the loader, which are
converted into hydraulic energy and output to the drive system. According
to the fast response characteristics and high power density characteristics
of the hydraulic power system relative to the thermal engine, the dynamic
model of the hydraulic hybrid drive system of the loader is established. The
double fuzzy PID control method is used to identify and modify the unknown
load and power parameters of the drive system. Through the experiment, it
is concluded that the power parameter matching of the transmission system
using the hydraulic hybrid technology is more optimized, the application
effect is good, and the efficiency of the power transmission system can be
maximized.
ENTPD3 Marks Mature Stem Cell Derived Beta Cells Formed by Self-Aggregation in Vitro
Authors: Docherty Fiona M. , Riemondy Kent A. , Castro-Gutierrez Roberto , Dwulet JaeAnn M. , Shilleh Ali H. , Hansen Maria S. , Williams Shane P. M. , Armitage Lucas H. , Santostefano Katherine E. , Wallet Mark A. , Mathews Clayton E. , Triolo Taylor M. , Benninger Richard K. P. , Russ Holger A.
Published: October 2021

Stem cell derived beta-like cells (sBC) carry
the promise of providing an abundant source of insulin-producing cells for use
in cell replacement therapy for patients with diabetes, potentially allowing
widespread implementation of a practical cure. To achieve their clinical
promise, sBC need to function comparably to mature adult beta cells, but as yet
they display varying degrees of maturity. Indeed, detailed knowledge of the
events resulting in human beta cell maturation remains obscure. Here we show
that sBC spontaneously self-enrich into discreet islet-like cap structures
within in vitro cultures, independent
of exogenous maturation conditions. Multiple complementary assays demonstrate
that this process is accompanied by functional maturation of the self-enriched
sBC (seBC); however, the seBC still contain distinct subpopulations displaying
different maturation levels. Interestingly, the surface protein ENTPD3 (also
known as nucleoside triphosphate diphosphohydrolase-3 (NDPTase3)) is a specific
marker of the most mature seBC population and can be used for mature seBC identification
and sorting. Our results illuminate critical aspects of in vitro sBC maturation and provide important insights towards
developing functionally mature sBC for diabetes cell replacement therapy.
Optimization of laser processing parameters through automated data acquisition and artificial neural networks
Authors: Vo Cameron , Zhou Boyang , Yu Xiaoming
Published: October 2021

Finding the optimal parameters in laser processing applications can be time-consuming given the large parameter space and various sources of error. This problem is exacerbated by day-to-day variation in laser beam characteristics and a large variety of materials that need to be processed. The ideal laser processing system should be “smart,” meaning that it can sense changes in the environment, make proper adjustment, and predict parameters for new materials. As a step toward this goal, we propose a method to efficiently extract the areas of a large number of laser-induced damages in situ using an automated data acquisition system that can control laser parameters, motorized stage movement, image capturing/processing, and feature extraction. The damage areas are extracted and compared with direct measurements. Damage areas are fed into an artificial neural network (ANN) for prediction. Various ANN structures and training functions are tested to create the optimal ANN for prediction. ANN predictions were found to be capable enough to accurately model and optimize the laser processing parameters that were investigated. With the capability of collecting a large amount of usable data in a short period of time, this acquisition system can be used to train sophisticated ANNs for complicated tasks such as quality control and failure prediction.
Rapid detection and identification of charcoal by laser-induced breakdown spectroscopy
Authors: Chen Ying , Peng Haochen , Liu Yuzhu
Published: October 2021

Identification based on laser-induced breakdown spectroscopy (LIBS) and machine learning is of great significance to reduce the risk of using low-quality charcoal or inappropriate charcoal, which does harm to fitness and environment. In this paper, fruit charcoal, mechanism charcoal, and bamboo charcoal were used as samples for detection. The characteristic lines of C, Mg, Al, Ca, Na, Fe, and K were observed in the spectra. Principal component analysis (PCA) was used to construct a model to show the sample in the principal component space. Based on the reduced-dimensional PCA model, combined with optimized k-nearest neighbor and optimized support vector machine learning methods, the classification accuracy of charcoal samples reached 96.0% and 97.3%, respectively. The results show that LIBS combined with machine learning provides a new method for charcoal detection and classification.
Virtuális valóság és haderő – katonai alkalmazási lehetőségek IV. rész
Authors: Németh András , Virágh Krisztián
Published: October 2021

A virtuális valóság (VR) történetét áttekintő sorozat korábbi részeiben a szerzők részletesen bemutatták azokat a technikatörténeti állomásokat (kutatási eredményeket és eszközöket), amelyek lehetővé tették e speciális, széleskörűen alkalmazható elektronikus technológia 21. századi, hétköznapi alkalmazását. A sokszínű polgári alkalmazás szemléltetése után a szakemberek a IV. részben megkezdik a haderőben történő felhasználási lehetőségek részletes ismertetését. A VR a kiképzésben alkalmazott, költséghatékony repülő-, harcjármű- és harcászati szimulátoroknak is fontos alapeleme. A kutatásfejlesztés-innováció (K+F+I) egymásra épülő rendszerében a legfontosabb cél az immerzivitás folyamatos fokozása annak érdekében, hogy a katona a virtuális környezetben minél tökéletesebben megtapasztalhassa egy adott feladat végrehajtása során őt érő hatásokat.
Az Aero Vodochody cseh repülőgépgyártó vállalat és repülőgépei II. rész
Authors: Hennel Sándor , Kelecsényi István
Published: October 2021

A tanulmány első részében a szerzők bemutatták az Aero Vodochody repülőgépgyár történetének korai szakaszát és fejlesztéseinek eredményeit. Az Aero gyár – az alkatrészgyártás mellett – 1953 óta épít gázturbinás repülőgépeket. Az üzemben kezdetben licenc alapján szovjet harci repülőgépeket gyártottak, majd – a gyártási tapasztalatok birtokában – 1962-től építenek saját konstrukciójú gázturbinás kiképző repülőgépeket. A különböző típusokat, így az L–29 Delfin, az L–39 Albatros, az L–59 Super Albatros, és az L–159 ALCA könnyű harci repülőgépeket a tanulmány első részében ismertették a szerzők. A folytatásban további információkat közölnek az L–159 ALCA repülőgépről. A szerzők felidézik az L–39NG (Next Generation) kiképző repülőgép-típuscsalád fejlesztésének egyes állomásait, majd részletesen kitérnek az Aero Vodochody repülőipari beszállítói tevékenységére, és az L–39 típusú repülőgépek magyarországi alkalmazására is.
A magaslégköri repülő platformok és lehetséges alkalmazhatóságuk
Authors: Horváth Attila
Published: October 2021

A technológia fejlődése mára lehetővé tette, hogy a légköri repülés határait új magasságokba emeljük. A sztratoszférarepülő, magaslégköri, személyzet nélküli repülőeszközök szolgáltatásai már-már műholdszerűek, ezért kapták egyik közkeletű nevüket is: pszeudoműholdak. Számos eltérést találunk azonban az űrrepülő műholdak és a magaslégköri repülő platformok, illetve a hosszú őrjáratozási idejű, de alacsonyabb repülési pályán működő, pilóta nélküli eszközök alkalmazhatósága és szolgáltatásai között. Ez a tanulmány egy valószerű műveleti szcenárió alapján bemutatja a sztratoszférarepülő pszeudoműholdakat és összehasonlítja azokat a megjelölt két másik elterjedt művelettámogató platformmal.
Petroleum Geochemistry Regional Study of Murzuq Basin: Insights from Biomarkers Characteristic, Stable Carbon Isotope and Environmental Characterization
Authors: S Aboglila
Published: October 2021

This search aims to apply developed geochemical methods to a number of oils and source rock extracts to better establish the features of ancient environments that occurred in the Murzuq basin. Geochemical and geophysical approaches were used to confirm further a source contribution from other Paleozoic formations to hydrocarbon accumulations in the basin. One hundred and forty rock units were collected from B1-NC151, D1-NC174, A1-NC 76, D1-NC 151, F1-NC58, A1-NC 186, P1-NC 101, D1-NC 58, H1-NC58 and A1-NC58 wells. Seven crude oils were collocated A1-NC186, B1-NC186, E2-NC101, F3-NC174, A10-NC115, B10-NC115 and H10-NC115 wells. A geochemical assessment of the studied rocks and oils was done by means of geochemical parameters of total organic carbon (TOC), Rock-Eval analysis, detailed-various biomarkers and stable carbon isotope. The TOC values from B1-NC151 range 0.40% to 8.5%, A1-NC186 0.3% and 1.45, A1-NC76 0.39% to 0.74%, D1-NC151 0.40% to 2.00% to F1-NC58 0.40% to 1.12%. D1_NC174 0.30% to 10 %, P1-NC101 0.80% to 1.35%, D1-NC58 0.5% to 1.10%, H1-NC58 0.20% to 3.50%, A1-NC58 0.40% to 1.60%. The categories of organic matter from rock-eval pyrolysis statistics point to that type II kerogen is the main type, in association with type III, and no of type I kerogen recognized. Vitrinite reflectance (%Ro), Tmax and Spore colour index (SCI) as thermal maturity parameters reflect that the measured rock units are have different maturation levels, ranging from immature to mature sources. acritarchs distribution for most samples could be recognized and Palynomorphs are uncommon. Pristane to phytane ratios (> 1) revealed marine shale to lacustrine of environmental deposition. The Stable carbon isotope ( δ 13 C) values of seven rock-extract samples are -30.98‰ and -29.14‰ of saturates and -29.86‰ to -28.37‰ aromatic fractions. The oil saturate hydrocarbon fractions range between -29.36‰ to -28.67‰ and aromatic are among -29.98 ‰ to -29.55 ‰. The δ 13 C data in both rock extractions and crude oils are closer to each other, typical in sign of Paleozoic age. It is clear that the base of Tanezzuft Formation (Hot shale) is considered the main source rocks. The Devonian Awaynat Wanin Formation as well locally holds sufficient oil prone kerogen to consider as potential source rocks. Ordovician Mamuniyat Formation shales may poorly contain oil prone kerogen to be addressed in future studies. An assessment of the correlations between the oils and potential source rocks and between the oils themselves indicated that most of the rocks extracts were broadly similar to most of the oils and supported by carbon stable isotope analysis results.
Source Rock Characterization of Silurian Tanezzuft and Devonian Awaynat Wanin Formations the Northern Edge of the Murzuq Basin, South West Libya
Authors: S Aboglila
Published: October 2021

Drill cutting samples (n = 92) from the Devonian Awaynat Wanin Formation and Silurian Tanezzuft Formation, sampled from three wells F1, G1 and H1, locate in the northern edge of the Murzuq basin (approximately 700 kilometers south of Tripoli). The studied samples were analyzed in the objective of their organic geochemical assessment such as the type of organic matter, depositional conditions and thermal maturity level. A bulk geochemical parameters and precise biomarkers were estimated, using chromatography-mass spectrometry (GC-MS) to reveal a diversity of their geochemical characterizations. The rock formations are having varied organic matter contents, ranged from fair to excellent. The total organic carbon (TOC) reached about 9.1 wt%, ranging from 0.6 to 2.93 wt% (Awaynat Wanin), 0.5 to 2.54 wt% (Tanezzuft) and 0.52 to 9.1 wt% (Hot Shale). The cutting samples are ranged oil-prone organic matter (OM) of hydrogen index (HI) ranged between 98 –396 mg HC/g TOC, related kerogen types are type II and II/III, with oxygen index (OI): 6 - 190 with one sample have value of 366 mg CO2/g. Thermal maturity of these source rocks is different, ranging from immature to mature and oil window in the most of Tanezzuft Formation and Hot Shale samples, as reflected from the production index data (PI: 0.08 - 034). Tmax and vitrinite reflectance Ro% data (Tmax: 435 – 454 & Ro%: 0.46 - 1.38) for the Awaynat Wanin. Biomarker ratios of specific hydrocarbons extracted from represented samples (n = 9), were moreover used to study thermal maturity level and depositional environments. Pristine/Phytane (Pr/Ph) ratios of 1.65 - 2.23 indicated anoxic to suboxic conditions of depositional marine shale and lacustrine source rock.
Parametric Investigation of Wettability Alteration of Reservoir Rocks by Asphaltene Deposition: Experimental and Modeling Approaches
Authors: E Khodapanah
Published: October 2021

Rock wettability plays an important role in water flooding process as it controls fluid flow, oil recovery and distribution of residual oil in any oil reservoir. In this context, polar oil components such as asphaltene contents may adsorb onto the pore mineral surfaces and alter wettability of the reservoir rock. Due to this importance, this study aims to investigate the effects of different parameters such as concentration of asphaltene, salinity, temperature and time on the rock wettability alteration process. For this purpose, dynamic contact angle measurement was performed. The results showed that the increment of asphaltene concentration in the oleic phase changes the wettability of water-wet sandstone rock to oil-wet condition; the increase in the concentration of asphaltene fraction from 0.1 to 5.0 g/lit increased the contact angle from 0 to 97 degrees. In addition, the increase in the brine salinity from 500 to 8000 ppm increased the ability of asphaltene to adsorb on the rock surface and consequently, increased oil wetness; the equivalent contact angle changed from 0 to 113 degree for 5 g/lit asphaltene content after 192 hours. Moreover, the results illustrated that a rise in temperature from 40 to 70 o C accelerates adsorption of asphaltene, but it has not significant effect on the final contact angle. Furthermore, the Adaptive Neuro-Fuzzy Inference System (ANFIS) is incorporated into the Particle Swarm Optimization (PSO) algorithm to correlate contact angle with the aforementioned parameters. To this end, the obtained experimental data are used to train and test the algorithm. The outputs of ANFIS-PSO algorithm are compared with the measured contact angles in both graphical and statistical manners. The training and testing determination coefficients (R 2 ) have been obtained as 0.99091 and 0.98761, respectively. The analysis indicates that the predictive model can be used with a high degree of confidence to investigate the effect of different parameters on wettability alteration
Aromatic Hydrocarbons as Indicators of Maturation and Source: Correlative Geochemical Evaluation of Commingled Niger Delta Crude Oils
Authors: MO Onyema
Published: October 2021

Two Niger Delta crude oils from Rivers and Delta States (samples A and F) and their compositional mixtures (samples B, C, D and E) where evaluated using a range of geochemical parameters derived from aromatic hydrocarbons and aromatic sulphur compounds to determine their source and maturity. The relative distribution of various plant markers in crude oil samples A and F which were retained in their compositional mixes suggests the contribution of angiosperm higher plants and coniferous higher plants to the source rocks that generated the crude oils. The various maturity parameters computed for the oil samples revealed that both the Rivers and Delta crude oils lie in the high maturity state with sample F significantly more matured than sample A. All alkynaphthalene maturity parameters suggested a peak to late oil generation window for the crude oil samples except the methyl naphthalene ratio (MNR) whose maturity sequence lacks sufficient variation to distinguish maturity differences in the crude oil samples. The maturity characters of TNR-1 and TNR-2 (trimethylnaphthalene ratio) showed a strong correlation between the individual crude oil samples and their mixtures. However, all the other maturity parameters showed moderate or weak correlation between the individual crude oil samples and their mixtures.
Hydroxyapatite-Based Materials for Heavy Metal Removal in Wastewater Treatment
Authors: GA Al Bazedi
Published: October 2021

Nowadays, undisputable environmental pollution requests endeavors to treat wastewater, particularly containing heavy metal, where wastewater treatment technologies are improving hastily. Hydroxyapatite with micro-porous structure and the large surface area turns into an intense research topic as of its high adsorption capacity. Environmentally friendly Hydroxyapatite powder with the large specific surface is a promising cost-effective precipitation method, for the removal of heavy metals (Al, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn) from wastewater. Different studies have revealed the efficient removal of all metals using hydroxyapatite or by modified HA using zeolite or chitosan. The increase of Ca2+ ions content in the treated water suggests an ion exchange mechanism
Tracking of Oil Water Contact in a Barail Main Reservoir
Authors: R Bordoloi
Published: October 2021

To supplement the current understanding of the reservoir and also to increase the confidence level in decision making, an understanding in the variation of Oil Water Contact is very much important. In this paper, a study of an integrated and efficient methodology for establishment of complex Oil Water Contacts in Barail Main Sand (water drive reservoir) for a part of one oilfield of Upper Assam Basin has been discussed. The Barail Formation which is the main producing reservoir exhibits unique behaviour in terms of fluid distribution. The aim of the study is to map the movement of Oil Water Contact with respect to time and production in the study area. The study is mainly based on the structural contour map drawn based on the open hole log data of drilled wells in different time frame throughout the development of the study area. Using Oil Field Management software a cross section had been prepared taking Oil Water Contact as base among the selected wells to track its trend in these wells of the study area. The present study shows that Oil Water Contact is disturbed upon the start of production and sensitive to the rate and volume of withdrawal from localized area. Aquifer is very active and vertical sweep efficiency in the reservoir is very good due to its reservoir properties which resulted a small transition zones as it is evident from the open hole logs of the wells drilled in different time span. The study also shows that as a result of the thinning of oil column and sand incursion owing to the high drawdown in the study area, the tracking of movement of Oil Water Contact is found to be very important.
Image perception of chain hotel companies by consumers
Authors: Anisimova Viktoriya Viktorovna , Volkova Tatiana Aleksandrovna
Published: October 2021

The hotel industry is growing and changing every time human needs change. There are a huge number of chain hotel companies ready to meet the needs of potential customers. In the conditions of ever-increasing competition, hotel companies are faced with the task of creating a positive image. The image itself is a mandatory element of a hotel brand and exists throughout its entire life path. Creating a positive image requires a lot of creative and organizational work. The purpose of the research is to determine the degree of influence of the image and reputation of a chain hotel company on the consciousness of consumers. The problem with the study is that it is impossible to accurately determine the unanimous opinion of consumers. Each brand has advantages and disadvantages, some consumers have used the services of chain hotel companies, and some have not, however, this will help to consider different sides of consumer views.
Social pedagogy in Kazakhstan: diagnosis of research competence to explore future counselors
Authors: Zhexembinova Ainur , Taubayeva Sharkul , Yertargynkyzy Dinara , Mukhatayeva Dinara
Published: October 2021

The aim ‎of the study was to distinguish the ways and criteria to diagnose the research competence levels of ‎future counselors in the specialty “Social ‎pedagogy and self-knowledge” and to describe diagnostic tools in ‎accordance with each criterion. The research engaged 103 students acquiring master’s degree in social pedagogy at two Kazakh universities. The participants’ research competence was gauged by 4 criteria and assessed by the “Motives definition of the teaching students of higher educational institutions” test, “The attitude to the research competence of future social workers” test; “Significant attitude to research” test, methods of self-assessment of readiness for professional activity, “Intellectual lability” test, “Assessment of the level of development of research skills of students” test, Common European Framework of Reference for English Language, and the “Diagnostics of the reflexive development level” test. The usefulness of diagnostic tools was approbated for assessment of students’ competence in other pedagogical specialties‎.
Morfologia externa de Miconia prasina (Sw.) DC. em estádio inicial de desenvolvimento
Authors: Santana Bárbara Jossany Gomes de , Silva Joselane Príscila Gomes da , Marangon Luiz Carlos
Published: October 2021

Estudos relacionados à morfologia externa de plântulas subsidiam diferentes áreas do conhecimento, destacando aqueles sobre regeneração e sucessão natural, por auxiliar na identificação das espécies. O estudo objetivou descrever a morfologia externa de Miconia prasina (Sw.) DC., em estádio inicial de desenvolvimento. Os frutos foram coletados em um remanescente de Floresta Ombrófila Densa das Terras Baixas. O material retirado dos coletores foi levado para o Laboratório de Análise de Sementes Florestais (LASF), no Departamento de Ciência Florestal (DCFL) da Universidade Federal Rural de Pernambuco (UFRPE). Para a descrição das plântulas, as sementes foram semeadas em caixa gerbox, utilizando papel toalha como substrato. Após a germinação das sementes e crescimento inicial das plântulas, estas foram transplantadas para recipientes de polietileno contendo solo comum e vermiculita. Em seguida, foram levadas para casa de vegetação no viveiro florestal-DCFL/UFRPE onde foram regadas, manualmente, e observado, diariamente, o desenvolvimento das plântulas, descrevendo todas as características da morfologia externa. A germinação iniciou no 17º dia após a semeadura, com a emissão da radícula. O início da emissão dos cotilédones deu-se no 19º dia, com tegumento ainda persistente no ápice. No 25º dia houve a exposição total dos cotilédones, foliáceos, de coloração verde. Desta forma, a germinação foi classificada como epígea fanerocotiledonar. Os primeiros eófilos surgiram 35 dias após a semeadura, apresentando-se simples, pubescentes, bordo liso, peciolados e com filotaxia oposta. A espécie expressou características semelhantes ao indivíduo adulto, porém com um leve polimorfismo, o que impossibilitou a identificação até o estádio de plântula.
The “refugee crisis” as an opportunity structure for right-wing populist social movements: The case of PEGIDA
Authors: Bitschnau Marco , Lichtenstein Dennis , Fähnrich Birte
Published: October 2021

Current research on right-wing populist communication is often confined to political parties, with social movements receiving much less attention. To help fill this research gap, we examine the frames and master frames of the PEGIDA movement and the role of the 2015 “refugee crisis” in shaping them. Using qualitative content analysis of speeches held at PEGIDA rallies between 2014 and 2016, we identify two distinct master frames, each consisting of five particular frames. Besides an initial master frame about the allegedly looming Islam- ization of Europe, a second master frame dealing with the Perils of Asylum emerge during the “crisis” – ultimately, both converge, with the latter incorporating central elements of the former. These findings buttress our interpretation of the “crisis” as an opportunity structure that helped right-wing populist social movements to revitalize their message and broaden their audience. However, its long-term impact still appears limited as PEGIDA’s influence has greatly waned in recent years.
Women’s economic rights in developing countries and the gender gap in migration to Germany
Authors: Neumayer Eric , Plümper Thomas
Published: October 2021

There is a large variation across countries of origin in the gender composition of migrants coming to Germany. We argue that women’s economic rights in developing countries of origin have three effects on their migration prospects to a place like Germany that is far away and difficult to reach. First, the lower are women’s economic rights the fewer women have access to and control over the resources needed to migrate to Germany. Second, the lower are the rights the lower is women’s agency to make or otherwise influence migration decisions. These two constraining effects on the female share in migrant populations dominate the opposing third effect that stems from low levels of women’s economic rights generating a potentially powerful push factor. We find corroborating evidence in our analysis of the gender composition of migration to Germany over the period 2009–2017.
Fishing Arts and Methods of the peninsula of Yucatan
Authors: López-Rocha Jorge A. , Ramos-Miranda Julia , Velázquez-Abunader Iván , Cabrera Miguel A. , Salas Silvia , Flores Hernández Domingo
Published: October 2021

El aprovechamiento de los recursos pesqueros en la península de Yucatán fue y sigue siendo una actividad muy importante, principalmente en las localidades costeras. Desde los antiguos mayas se hacía uso de la riqueza pesquera de la región, en ese entonces con balsas de madera, redes, anzuelos y arpones de materiales naturales como textiles, conchas y huesos. Con el desarrollo de la humanidad, también se desarrolló la pesca en la región; actualmente se estima que cerca de 30,000 personas se dedican a la pesca en los estados de Campeche, Yucatán y Quintana Roo y más del 90% lo representan actividades de pesca artesanal; de esta forma, es indudable que la pesca artesanal es una actividad importante y fuente de bienestar para sus pobladores, porque genera alimentos de calidad, empleos y en general desarrollo económico y social. Los sistemas de pesca artesanal en zonas tropicales, como los que se presentan en la península de Yucatán, objeto de esta obra, son sistemas especialmente complejos, porque capturan una gran variedad de especies y para eso usan también gran variedad de artes y métodos de pesca. Estas herramientas y operaciones que se utilizan para capturar organismos acuáticos son una figura central en los sistemas pesqueros. La forma que los pescadores pueden extraer/capturar los organismos, así como la decisión sobre el uso de un determinado arte o método de pesca, determinan la forma en la que los pescadores interactúan con el medio ambiente, interacción que está mediada por factores ecológicos y ambientales como: la abundancia, disponibilidad y vulnerabilidad del recurso objetivo; así como por factores sociales y económicos como: las tecnologías y materiales disponibles, el costo de las mismas, las demandas del mercado e incluso de una manera muy importante por los usos y las costumbres que llegan a formar parte de la cultura de una región.
КОНТРОЛЬ В СИСТЕМЕ ОРГАНОВ ИСПОЛНИТЕЛЬНОЙ ВЛАСТИ
Authors: Асриянц Каринэ Геннадьевна , Джамалудинова Мадинат Юнускадиевна
Published: October 2021

Цель работы. В статье рассматриваются особенности контроля в системе органов исполнительной власти. Методология проведения работы. Проведен анализ видов государственного контроля за деятельностью органов исполнительной власти и их должностных лиц. Результаты работы. В статье дано определение исполнительной власти и ее признаки. Рассмотрены контрольные полномочия высших исполнительных органов государственной власти субъектов РФ. Описаны виды государственного контроля за деятельностью органов исполнительной власти и их должностных лиц. Область применения результатов – возможность применения разработанной методики в Республике Дагестан и в целом по России. Выводы. Контроль в системе органов исполнительной власти осуществляется с целью обеспечения законности и дисциплины на порученных им участках работ, связанных с руководством хозяйственной, социально-культурной и административно-политической деятельности в системе подведомственных им органов, предприятий, учреждений и организаций.
ГАРМОНИЗАЦИЯ ПРОМЫШЛЕННОЙ И ТОРГОВОЙ ПОЛИТИКИ Предприятия
Authors: Зоидов Кобилжон Ходжиевич , Пономарева Светлана Васильевна , Шевелев Александр Олегович
Published: October 2021

Предмет. В научной статье рассмотрена проблема гармонизации торговых и промышленных отношений предприятия с федеральными и региональными органами власти. Цель работы. Целью данного исследования является нахождение путей наибыстрейшего достижения гармонии в торговой и промышленной политике. Задачи. Представлены ключевые факторы, влияющие на гармонию в данной сфере, а также почему эти факторы следует учитывать при развитии торговых отношений. Методология исследования была проведена эволюционно-институциональным подходом и методом синтетического анализа сотрудничества предприятия с органами власти. Иными словами, брался каждый отдельный элемент данной структуры, соединялся с другими. После чего выявлялось, как различные виды контактов всех элементов влияли друг на друга. Результаты исследования. Основываясь на используемой методологии проведения исследования гармонизации промышленной и торговой политики предприятия, была построена схема взаимодействия уровней торговой политики. Выявлено, что наихудшим вариантом торговых отношений является тот случай, когда между собой сотрудничают только государственные органы власти и региональные. Для того чтобы показать более наглядно предложенную схему, сделана альтернатива ей в виде треугольника тройственных отношений. Далее был предложен вариант развития сценария отношений между всеми уровнями в виде алгоритма (блок-схемы). По всем видам схем проведен анализ, сделаны выводы. Выводы. По схеме взаимодействия и результатов взаимодействия уровней торговой политики сделан вывод, что наилучший исход развития событий достигается при участии всех сторон торгово-промышленных отношений. Предложенный алгоритм описывает все возможные варианты отношений, предлагает пути решения проблем на различных этапах при их возникновении. В конечном итоге блок-схема всегда приводит к единственному исходу, при котором достигается максимальная экономическая эффективность и социальная польза для всех сторон торговых и промышленных отношений. Область применения результатов. Результаты исследования могут быть использованы органами власти России для ликвидации существующих проблем в области гармонизации торговых и промышленных отношений предприятия с федеральными и региональными органами власти, при реализации структурных реформ.
ОЦЕНКА ЭФФЕКТИВНОСТИ УПРАВЛЕНИЯ ГОСУДАРСТВЕННЫМ ДОЛГОМ РОССИЙСКОЙ ФЕДЕРАЦИИ
Authors: Магомедова Аида Багомедовна , Мустафаева Мадина Арсеновна , Махдиева Юлия Махдиевна
Published: October 2021

Цель работы. В статье рассматривается совокупный государственный долг РФ, а также объем расходов бюджета РФ, связанных с обслуживанием этого долга. Метод или методология проведения работы. Проведен статистический анализ динамики государственного долга Российской Федерации. Результаты. В ходе проведенного нами анализа было выявлено, что за 2015–2020 годы объем совокупного государственного долга имеет тенденцию к увеличению. Наименьший объем совокупного долга России приходится на 01.01.2015 и составляет 10 297,9 млрд руб., а наибольший объем государственного долга РФ приходится на 01.01.2020 в размере 13 567,3 млрд руб. В статье выделены основные причины устойчивого роста государственного долга страны. Причиной роста совокупного внешнего долга Российской Федерации в 2019 году стала покупка нерезидентами суверенных ценных бумаг, которые номинированы как в иностранной валюте, так и в российских рублях. Была проведена качественная и количественная оценка управления государственным долгом страны. Для количественной оценки эффективности управления государственным долгом была рассмотрена долговая устойчивость. За 2016–2017 годы доля внутреннего долга в составе общего падает, но затем, с 2017 по 2020 год, его доля возрастает и на 2020 год должна составить 76,6 %. Для качественной оценки эффективности системы управления государственным долгом проанализирована динамика объема расходов бюджета РФ, связанных с обслуживанием государственного долга РФ. За рассматриваемый период (2017–2019 годы) наблюдается увеличение расходов на обслуживание внутреннего долга в 2019 году на 31,1 млрд рублей, или на 5,5 % по сравнению с 2018 годом. Данное увеличение может быть связано с увеличением расходов на обслуживание ОФЗ-ПД в 2019 году на 56,0 млрд рублей по сравнению с 2018 годом. Область применения результатов. Результаты проведенного исследования могут быть использованы при анализе и прогнозировании динамики совокупного государственного долга страны и оценке государственного долга на уровне субъектов. Выводы. Делается вывод, что дальнейшее развитие и совершенствование действующей практики оценки эффективности управления государственным долгом позволило бы создать надежную основу эффективного управления государственным долгом.
РЕГИОНАЛЬНАЯ КЛАСТЕРИЗАЦИЯ: ПРЕИМУЩЕСТВА ПОДХОДА В ИННОВАЦИОННОМ РАЗВИТИИ
Authors: Романец Ирина Игоревна
Published: October 2021

Цель работы. В статье в качестве усовершенствованного методического подхода анализа территориальных образований предложен кластерный анализ и кластерный скрининг, т. к. в современных условиях трансформации экономики особо актуальной стоит задача адаптивного инструментального метода диагностики региональной экономики. Метод и методология проведения работы. Проведен кластерный анализ региона (на примере Краснодарского края) с обработкой информации в программе Statistica. Ряд применяемых методов и приемов базируется на логических выводах. Для подтверждения доказательности концептуальных предложений и прикладных результатов исследованы труды отечественных и зарубежных авторов в области кластеризации социально-экономических, инновационных систем, фундаментальных основ повышения инвестиционной привлекательности территорий, а также возможности эволюционного и междисциплинарного подходов. Результаты. В результате анализа выделились 4 кластера региона, для которых характерны высокая степень самостоятельности, самоорганизации, повышенная инновационная активность, новаторство, усиление связей, быстрая реакция на меняющуюся рыночную конъюнктуру. Область применения результатов. Полученные результаты и систематизированные данные могут служить материалом для дальнейших научных исследований региональной экономики с применением инструментальных методов изучения кластеров и их роли в инновационном развитии региона. Результаты проведенного исследования могут быть положены в основу формирования стратегий социально-экономического развития региональных систем и муниципальных образований. Выводы. Сделан вывод, что кластерная активация обеспечит заметный рост конкурентоспособности экономики и социальной сферы региона, значительно способствуя развитию новой «умной экономики», превращению инноваций в ведущий фактор экономического роста.