bluuebunny/crossref_metadata_2025 huggingface dataset:
Treatment isolated fungi from laboratory tools in some Baghdad hospitals by using biosynthesized nanoparticles
Authors: Tamkeen Rayaheen Mohammed , Al-Bahrani Rusol M.
Published: July 2021

The study aims to biosynthesized of sliver nanoparticle from aqueous extract of olive leave and evaluate the effectiveness of the synthesis AgNPs against isolated fungi. The study mediating fifty samples were taken from various tools in laboratory from five hospitals in Baghdad. Four species of fungi were identified depending on the morphological and microscopic characteristics. The most common isolated fungi based on their frequency ratio were as follows Aspergillus niger 87.5%, Aspergillus flavus 62.5%, Aspergillus fumigatus 53.5% and Aspergillus nidulans 37.7%.The Biosynthesis of silver nanoparticle developed a rapid, eco-friendly and convenient green method for the stable silver nanoparticles (AgNPs) were synthesised with an average diameter of 30 Â± 60 nm and like spherical in shape, using the aqueous solution of the Olive tree (Olea europaea) leaves extract.The reaction is carried out at 10-3M of silver nitrate. The AgNPs synthesized were confirmed by their change of color to (dark brown-grey). The characterization was studied using UV-Visible spectroscopy, Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). Inhibition effect of AgNPs against fungi has been studied using well diffusion method by studying  the effect of different concentration (100, 75, 50 and 25). The results revealed that the AgNPs have considerable antifungal activity comparison with alcohol. The obtained results indicate that the highest level of inhibition zone was detected at the concentration of 100 Âµg/ml of AgNPs, where the inhibition zones are (23.33 Â± 4.41) for A. flavus and the lowest level of  inhibition zone was detected at  the concentration 25 Âµg/ml of AgNPs ,where the inhibition zones are (6.00 Â± 1.15) for A.nidalus. While using alcohol the highest level of inhibition zone was detected at the concentration of 100 Âµg/ml of Alcohol, where the inhibition zones are (12.33 Â± 1.45) for A.nidalus, and the lowest level of  inhibition zone was detected at  the concentration 25 Âµg/ml of Alcohol ,where the inhibition zones are (4.67Â± 0.33) for A.flavus.
Fabrication of TiO2 sensor using rapid breakdown anodization method to measure pressure, humidity and sense gases at room temperature
Authors: Khaleel Reem Saadi , Hashim Mustafa Shakir
Published: July 2021

Rapid breakdown anodization (RBA) process was used to fabricate TiO2 sensor to measure pressure and humidity and sense gases at room temperature. This chemical process transformed Ti to its oxide (TiO2) as a powder with amorphous phase as X ray diffraction (XRD) technique confirmed.  This oxide consisted from semi spherical nanoparticles and titania nanotubes (TNTs) as Scanning electron microscope (SEM) technique showed.  TiO2 powder was deposited on Ti substrates by using electrophoretic deposition (EPD) method.   Average pressure sensitivity was 0.34 MÎ©/bar and hysteresis area was 1.4 MÎ© .bar. Resistance of TiO2 decreased exponentially with the increasing of relative humidity (RH%). The sensitivity% of TiO2 for RH% was greater than 70% in the range of (50-95). TiO2 was tested as a sensor for Ammonia, Ethanol and Methanol. Its sensitivity and selectivity towards Ammonia were the greatest but the shortest response and recovery times were recorded toward Methanol.
Some Identities of 3-Prime Near-Rings Involving Jordan Ideals and Left Generalized Derivations
Authors: En-guady Adel , Boua Abdelkarim , Farhan Enaam
Published: July 2021

In the current paper, we study the structure of Jordan ideals of a 3-prime near-ring which satisfies some algebraic identities involving left generalized derivations and right centralizers. The limitations imposed in the hypothesis were justified by examples.
Simultaneous Identification of Thermal Conductivity and Heat Source in the Heat Equation
Authors: Huntul M. J. , Hussein M.S.
Published: July 2021

This paper presents a numerical solution to the inverse problem consisting of recovering time-dependent thermal conductivity and  heat source coefficients  in the one-dimensional  parabolic heat equation.   This  mathematical  formulation  ensures that the inverse problem  has a unique  solution.   However, the problem  is still  ill-posed since small errors  in the input data lead to a drastic  amount  of errors in the output coefficients.  The  finite  difference method  with  the Crank-Nicolson  scheme is adopted  as a direct  solver of the problem in a fixed domain.   The inverse problem is solved subjected to both exact and noisy measurements  by using the MATLAB  optimization  toolbox  routine  lsqnonlin , which is also applied to minimize the nonlinear  Tikhonov  regularization functional.  The thermal conductivity and heat source coefficients are reconstructed using heat flux measurements. The root mean squares error is used to assess the accuracy of the approximate solutions of the problem. A couple of  numerical  examples are presented to verify the accuracy and stability of the solutions.
On a Subclass of Analytic and Univalent Functions with Positive Coefficients Defined by a Differential Operator
Authors: Al-khafaji Aqeel Ketab
Published: July 2021

In this paper, a differential operator is used to generate a subclass of analytic and univalent functions with positive coefficients. The studied class of the functions includes:  

 

which is defined in the open unit disk  satisfying the following condition

This leads to the study of properties such as coefficient bounds, Hadamard product, radius of close –to- convexity, inclusive properties, and (n, τ) –neighborhoods for functions belonging to our class.
The Correlation between Maternal Vitamin D and Interleukin-17 Levels and Fetal Biophysical Profile
Authors: Mohammed Rosol J. , Salih Lina A.
Published: July 2021

This research aims to evaluate the serum levels of vitamin D and interleukin 17 (Il-17) in pregnant women, then finding the correlation between these maternal parameters and fetus biophysical profile. Healthy pregnant women (n=45) and  non-pregnant control (n=45) were involved in the study, who attended Baghdad medical laboratory, Baghdad, Iraq, with an age range of 20 to 40 years. An analytical study was conducted from October 2019 until January 2020.

The results of the study show that the mean value of vitamin D level significantly increases (P≤0.05) in pregnant women (11.07±0.93 ng/ml) in comparison with that in non-pregnant control (8.03±0.69 ng/ml). The level of IL-17 was significantly higher (P≤0.001) in the pregnant women (468.38±50.62 Pg/ml) as compared to non-pregnant ones (144.39±3.98 Pg/ml). Also, the results show no significant correlation (0.162) between maternal vitamin D and (F.H.R.), which was measured by ultrasound sonography. Also, there is no significant inverse correlation between maternal Il-17 and fetal growth measurement.

It can be concluded from the current study that some of the signs of the physical appearance of the fetus that were studied in the second trimester (13-28 w) and third trimester (29-41 w) of pregnancy do not correlate with the level of vitamin D in the mother’s blood. Also, there is a weak inverse relationship between this appearance and the mother’s immune response, represented by measuring the level of IL-17, which needs more studies in the future.
ANALISIS KESTABILAN MODEL P REY âˆ’ P REDAT OR HOLLING TIPE III
Authors: HAZISYAH HAZISYAH , RINCE PUTRI ARRIVAL , BAHRI SUSILA
Published: July 2021

Model matematika yang merepresentasikan interaksi antara prey (mangsa) dan prey (pemangsa) dikenal dengan model prey-predator. Penelitian ini membahas dinamika model prey-predator yang memuat fungsi respon Holling tipe III, dimana tipe predator yang mencari mangsa lain ketika mangsa yang dimakannya mulai berkurang. Dinamika model diamati dengan menganalisis kestabilan sistem, yaitu kestabilan sistem di sekitar titik ekuilibriumnya. Secara analitik terdapat tiga titik ekuilibrium dari model. Terdapat satu titik yang tidak stabil dan dua titik yang kestabilannya tergantung pada nilai parameter yang diberikan. Hasil simulasi numerik menunjukkan sifat yang sama untuk tiga titik keseimbangan tersebut dengan parameter yang digunakan pada penelitian ini.Kata Kunci: Model Prey-predator, Holling tipe III, Titik ekuilibrium.
HIMPUNAN LEMBUT KABUR INVERS DAN APLIKASINYA DALAM PENGAMBILAN KEPUTUSAN
Authors: KOFILA PUTRI ROZI , NAZRA ADMI , JENIZON JENIZON
Published: July 2021

Pada artikel ini dikaji beberapa operasi pada himpunan lembut kabur invers yaitu komplemen himpunan lembut kabur invers, himpunan bagian lembut kabur invers ,gabungan himpunan lembut kabur invers, irisan himpunan lembut kabur invers, serta dapat dibuktikan sifat De Morgan dari opersai-operasi tersebut. Kemudian, diberikan suatu aplikasi dari himpunan lembut kabur invers dalam masalah pengambilan keputusan, dengan diberikan suatu algoritma pengambilan keputusan yang menggunakan suatu konsep yang disebut dengan keputusan maks-min dan keputusan min-maks.Kata Kunci: Himpunan lembut, himpunan kabur, himpunan lembut kabur, himpunan lembut invers, himpunan lembut kabur invers.
KONSTRUKSI STRUKTUR TOPOLOGI PADA HIMPUNAN LEMBUT KABUR
Authors: ALFAKHRIATI RIRI , HARIPAMYU HARIPAMYU , JENIZON JENIZON
Published: July 2021

Pada penelitian ini akan dikonstruksi struktur topologi pada himpunan lembut kabur. Khususnya, konsep tentang basis dan subbasis untuk topologi lembut kabur dengan memberikan kondisi yang berbeda dalam pendefinisian basis dan subbasis untuk topologi lembut kabur. Setelah itu, diperkenalkan juga konsep topologi lembut kabur yang dibangun oleh basis dan subbasis dan beberapa teorema terkait.Kata Kunci: Basis untuk topologi lembut kabur, subbasis untuk topologi lembut kabur, topologi lembut kabur
Pengukuran Produktivitas dengan Metode Overal Equipment Effectiveness dan OMAX di Lini Produksi TMM1 dan TMM2 PT. MTG
Authors: Magdalena Riana , Negara Delima Permata
Published: July 2021

PT MTG is a company engaged in the gears and mechanical part component. In the current condition, PT MTG has an effort to improve the company's work efficiency through with an efficiency target of 80%. However, the current problem is that the company does not yet have the right method for evaluating and detecting factors that inhibit increased productivity on the "TMM 1" and "TMM 2" production lines. To find out the right method for PT MTG, two productivity measurement methods are used in total with the Overall Equipment Effectiveness (OEE) method and partially with the Objective Matrix (OMAX) method. In measuring productivity with the OEE method, it can be seen six big losses that occur in each machine on each production line. Whereas in the OMAX method, measurement of productivity is used 4 criteria to determine the company's productivity index, namely (1) Minimization of Defective Products; (2) Optimizing Production Capacity; (3) Efficient Use of Labor; (4) Minimize Absence of Work. Based on the results of data processing and analysis, the average overall OEE value for the "TMM 1" and "TMM 2" production lines is 0.32% and 0.321%. The OEE value still does not meet the JIPM standard of 85%. Whereas in the OMAX results, the average productivity index value of the two production lines is 140.80 per month from the optimal value of 1000. The factor influencing the two methods for not achieving the target is the amount of production per month that differs more than 55% of the production plan. Whereas in OEE, excess production is not considered a loss. So, for the current conditions the right method of measuring productivity for PT MTG is the OMAX Method.
Methods for anchoring boundary nodes when smoothing a triangular surface mesh
Authors: Шумилин Сергей Сергеевич
Published: July 2021

В задачах численного моделирования, использующих поверхностные сетки, часто требуется перестроение сетки. Однако при перестроении сетки могут возникать искажения. Накопление искажений может привести к развалу решения. Для того, чтобы поддерживать качество сетки в процессе расчета, применяются алгоритмы сглаживания. При выполнении сглаживания методами, сдвигающими узлы сетки, граничные узлы обычно закрепляют, чтобы избежать искажений. Однако простое закрепление узлов может привести к более серьезным искажениям. В данной работе предлагаются методы работы с граничными узлами, позволяющие контролировать такие узлы в процессе сглаживания. Также рассмотрены алгоритмы для работы с псевдотрехмерными поверхностными сетками, представляющими отдельный интерес.
Settling of mollusks and sedimentation on artificial substrata in the Sukhodol Bay (​​Japan Sea)
Authors: Gavrilova Galina S. , Terekhova Valeria E.
Published: July 2021

Density of bivalve spat settled on collectors determines the yield of aquaculture plantation. It varies considerably in different water areas at Primorye coast and has year-to-year variability. The spat settling intensity in the last decade is considered for a marine farm in the Sukhodol Bay (Ussuri Bay) and sedimentation of suspended matter on collectors is estimated for the same plantation in the summer of 2012. Period of the scallop spat settling is rather long and continues until late June. Mean spat size is 9.2 ± 2.2 mm (modal group 8-10 mm), mean weight is 0.08 g. The average density of juvenile scallops Mizuhopecten yessoensis changes year-to-year from 77 to 200 ind./collector, and the density of juvenile mussels Mytilus trossulus - from 500 to 2,330 ind. per meter of the collectors set. These values provide the annual harvesting of > 2 million ind. of the scallop spat and 10-30 ton of commercial-size mussels from 1 hectare of plantation. Juveniles of sea cucumber Apostichopus japonicus settle on collectors as well, in less number, but sufficient for their growing on bottom plantations in some years. Suspended matter sedimentation on collectors, including agrestal marine organisms, is rather high in the first months after the collectors installation - up to 0.31 ton/month per 1 hectare of standard plantation. Reclamation measures are recommended in the cases of high sedimentation, possibly installation of bicultural plantations in the water column.
State of forage base for pacific salmons in the Bering Sea in 2003-2012 (by results of surveys of the international expeditions BASIS-1 and 2)
Authors: Volkov Anatoly F.
Published: July 2021

The BASIS expeditions in the Bering Sea were conducted by North Pacific Anadromous Fish Comission (NPAFC) in the 2003-2006 and 2007-2012, in relatively warm and relatively cold conditions, respectively. The ice cover of the Sea changed synchronously in its western and eastern parts and indicated the warm regime since 2001 to 2006 and the cold regime since 2006 till nowadays. The regime shift changed radically the structure of zooplankton community in the eastern Bering Sea: the dominance of small-sized and medium-sized zooplankton was replaced by the dominance of large-sized zooplankton, with abundant large species of euphausiids, hyperiids, copepods, and arrowworms. This restructuring was reflected in the diet of pacific salmon: the bulk of the pink, chum and sockeye salmons diet was presented by fingerlings of pollock, sand lance, and capelin, larvae of flounders and crabs, and fry of small demersal fish in 2003-2006, but by zooplankton as euphausiids, hyperiids, and pteropods since 2007. However, there weren’t so essential changes in the western Bering Sea, both in zooplankton structure and salmons diet; the year-to-year dynamics was significant here, too, but long-term tendencies were not observed.
Integral values of biomass and stock of zooplankton in the epipelagic layer of the area 71 in the North Pacific, including the Bering and Okhotsk Seas, and patterns of distribution for mass species
Authors: Volkov Anatoly F.
Published: July 2021

The Okhotsk and Bering Seas and the subarctic zone of the North Pacific are surveyed well by the expeditions conducted by Pacific Fish. Res. Center (TINRO) in the last three decades (115 surveys in 1984-2013), with sampling of zooplankton for monitoring of feeding resources of commercial species. Mean total zooplankton biomass and biomasses of size fractions of zooplankton, its taxonomic groups and mass species are calculated, by biostatistical areas. General patterns of the biomass distribution between the biostatistical areas are determined and presented as the charts of the biomass averaged by the areas. The most abundant species of zooplankton with similar systematic and trophic status are spatially separated that allows them to reduce competition for food, for example the pairs of small-sized, medium-sized and large-sized Copepoda species ( Pseudocalanus minutus - Oithona similis, Metridia pacifica - M. okhotensis , Calanus glacialis - Neocalanus plumchrus ), the pair of Hyperiida species ( Themisto pacifica - T. libellula ) and four Euphausia species ( Thysanoessa raschii - Th. inermis - Th. longipes - Euphausia pacifica ) in the Okhotsk Sea. Detailed tables on biomass and stock of the main components of zooplankton are presented, by regions and biostatistical areas.
Atmosphere circulation over the Far East of Russia in 2013, during extreme flood in the Amur basin
Authors: Mezentseva Ludmila I. , Sokolov Oleg V. , Druz Natalia I.
Published: July 2021

Atmospheric processes over the Far East of Russia and the North-West Pacific are investigated for understanding the reasons of the rainfall over the Amur basin in the summer of 2013, extreme by its duration and intensity, that has caused catastrophic flood in the middle and lower flow of the Amur River. On the base of detailed analysis of the air circulation, the reasons of such rainy weather are analyzed, and recommendations for its prediction are proposed. The circulation is described quantitatively by several parameters, as average atmospheric pressure at the sea level, geopotential height, air temperature, indices of integrated air transfer over certain areas, and indices of cyclonic activity over the Amur basin and tropical zone. Prevailing pressure systems are revealed, which are responsible for formation of precipitation fields over the Amur basin. In particular, the long and intense rains over the Amur basin in May-August of 2013 were caused by cyclones propagating along the stable atmospheric frontal zone located in this area. They were blocked by the baric ridge over the Okhotsk Sea, so the deep and stable atmosphere depression (Far-Eastern Low) was formed over the middle and lower flow of the Amur in July-August of 2013 with the negative pressure anomaly > 1.7σ (standard deviation), where the cyclones deepened below than usually (on average in 5 hPa below). This depression was maintained by intensive meridional air transfer in the troposphere over East Asia that transported heat and moisture from the tropical zone. This transfer was reasoned by huge reserves of moisture, latent and sensible heat over southeastern Asia that was formed by abnormally strong equatorial trade-winds and unusually frequent tropical cyclones, mostly going by eastern trajectories because of strong western spur of the Hawaiian High that blocked their ways. All these patterns were presumably conditioned by strengthening of the Hawaiian High. As the result of these large-scale circumstances, the air mass with tropical properties was moved to temperate latitudes, and cyclones converted them to heavy rains just following to their usual paths across the Amur basin.
Ecological characteristic of water in the Eastern Bosporus Strait by oxygen parameters
Authors: Khristoforova Nadezhda K. , Emelyanov Alexander A. , Berdasova Ksenia S. , Degteva Yulia E.
Published: July 2021

Spatial distribution and seasonal variability of the basic ecological parameters for marine water, as dissolved oxygen content, biochemical oxygen demand, and permanganate oxidizability are considered for the Eastern Bosporus Strait (Peter the Great Bay, Japan Sea) on the data obtained in autumn, spring and summer seasons of 2013-2014, with special attention to the Ajax and Paris Bights of Russky Island on the southern coast of the Strait, changed significantly after construction of new university campus and marine aquarium. Normal oxygen regime is observed over the whole strait in autumn, but cases of low dissolved oxygen content, close to the minimal permissible level, are revealed in spring and summer. This phenomenon is an important feature of environmental conditions in the Strait in the warm period. It is possibly reasoned by general pollution of marine environments by sewage water, high water temperature, and relatively high concentration of suspended matter caused by active water circulation in the narrow strait and heavy rains. However, there is no any specific anthropogenic impact on the oxygen content in the Ajax and Paris Bights.
Techno-chemical description of starfish as an object of industrial processing
Authors: Bogdanov Valery D. , Maximova Svetlana N. , Tungusov Nickolay G. , Shadrina Ekaterina V.
Published: July 2021

Size-weight parameters and chemical composition of starfish from the Severnaya Bay (Peter the Great Bay, Japan Sea) are investigated. Two starfish species: Evasterias echinosoma and Patiria pectinifera form dense aggregations in the bay at aquaculture plantations of Far-Eastern Technical University. Their largest size and weight are observed in spring and summer. The main part of their body weight is presented in any season by coating connective tissue that contains proteins (9.5-14.3 %), lipids (0.7-3.8 %), and mineral substance (1.3-32.0 %). The proteins include all essential amino acids (36.4-39.4 % of total amino acids weight) and the lipids include unsaturated fatty acids (20.7-22.7 % of total lipids weight). Viscera of starfish are distinguished by high content of potassium and iron and the proteins of viscera have heightened content of essential amino acids (on average 40.3 % of total amino acid weight for P. pectinifera and 44.3 % for E. echinosoma ). High biological value of the starfish tissues determines prospects of their use as raw material for industrial processing to functional foodstuffs.
Composition, distribution, and seasonal dynamics of vegetation in the estuaries of the Olga Bay (central Primorye)
Authors: Kolpakov Nickolay V. , Olkhovik Arthur V.
Published: July 2021

Twenty-one species of water plants are found in the Avvakumovka River estuary and fourteen species - in the Olga River estuary in 3 surveys conducted in May, July, and September of 2012. Zostera marina dominates in the external estuary of both rivers in any season, whereas Potamogeton spp. and Ruppia maritima are the most abundant in some local areas of the Avvakumovka external estuary and Zostera japonica - in some local shallow areas of the Olga external estuary (where it forms perennial settlements). Chaetomorpha linum is the subdominant species in the Olga external estuary. In the Avvakumovka internal estuary, Cladophora glomerata and Z. marina are the dominants in May, Z. marina - in July, and Z. marina and Potamogeton spp. - in September, but any bottom vegetation is absent in the Olga internal estuary. From May to September of 2012, the summary biomass of water vegetation in both estuaries increased in 5 times: from 0.3 to 1.5 thousand tons.
On conditionally pathogenic microflora of caspian seal ( Phoca caspica)
Authors: Volodina Victoria V. , D’Jakova Svetlana A. , Ruban Ekaterina , Shokasheva Dina I.
Published: July 2021

Caspian seal was subjected in the 2000s to complex combined infection caused by viruses and pathogenic bacteria that led to mass mortality of this species, the only marine mammal in the Caspian Sea. So, bacteriological monitoring and detection of pathogenic microorganisms in internals and tissues of the seal were conducted in the 2007-2014 and a broad spectrum of high-adaptive pathogenic microbial associations was found. The examined mammals had not diseases of bacterial origin in that time, and the most part of this microflora was qualified as the resident one, but these bacteria were able to trigger infectious process in case of deterioration of environmental conditions (anthropogenic pollution, malnutrition, lack of ice fields, etc.). Composition and abundance of the conditionally pathogenic microflora depended on physiological state of seals: the animals with invasive diseases had more abundant and diverse sanitary-indicative microorganisms. Presence of highly adaptive opportunistic microorganisms in the organism of seal is a sign of unfavourable sanitary-microbiological state of this species and considerable persistence of sanitary-indicative microflora in the ecosystem of the Volga-Caspian basin, with significant parasitizing and multiple antibiotic resistance, that is a background for high epidemiological risk.
On one model approach to stock assessment for red king crab Paralithodes camtschaticus on the shelf of West Kamchatka
Authors: Ilyin Oleg I. , Ivanov Pavel Yu.
Published: July 2021

A possible model approach to stock assessment of marine commercial invertebrates is discussed based on modeling of year-to-year dynamics for three functional groups (recruits, prerecruits, and commercial males). The model parameters are determined by joint solution of the tasks of optimal filtration and identification. As an example, this approach is used for assessment of the stock of king crab on the shelf of West Kamchatka. For this case, the data on actual catch are used obtained from reports of customs in Japan, Korea, USA, and China about the volume of crab products imported from Russia. The modeling confirms the conclusion from direct observations about rapid growth of the red king crab stock at West Kamchatka in recent years. Following to these results, the value of total allowable catch (TAC) can be substantially increased for this species. The officially recommended TAC of red king crab at West Kamchatka for 2016 is below of the 95 % confidence interval of the really possible catch. This value does not account the species stock recovery and hamper rational utilization of the valued natural resource.
Hydrodynamically effective area for traps and nets
Authors: Seslavinsky Vyacheslav I.
Published: July 2021

Method for estimation of hydrodynamically effective area for fishing traps and nets is presented. Fish can detect hydrodynamic excessive pressure and water flow turbulence on the distance that depends on its lateral line sensitivity and swiftness of perception, but also on the flow velocity, drag resistance of fishing gear, fit coefficients for its covering, and type of the covering. The latter dependencies are considered. Algorithm for calculation of the effective area for flat netting gears is derived.
Complex assessment of variability for the sea surface temperature in the North-West Pacific in July-September 1950-2014
Authors: Shatilina Tatyana A. , Tsitsiashvili G. Sh. , Radchenkova Tatyana V.
Published: July 2021

Trend significance is evaluated and periodicities are revealed for time series of the sea surface temperature in the North-West Pacific. The dominant periods are selected using Fourier method under the assumption of linear trend existing over sufficiently large fluctuations. On the background of rapid warming in the 1983-2014, increasing fluctuations of summer SST were observed, with 7-year cycle domination, which were gradually shifted to August-September. Patterns of atmospheric circulation preceding to events of extreme thermal regime in summer are identified using the method of interval recognition: the extreme warm thermal regimes are formed mainly by subtropical anticyclones having a tendency to strengthen, and the extreme cold regimes are conditioned by strengthening of summer monsoon in its first stage.
Development of technology for functional products on basis of vegetable and fish raw materials
Authors: Potapova Valeria A. , Mezenova Olga Ya.
Published: July 2021

Influence of the time of thermal treatment of sardinella backbones on organoleptic characteristics, water-holding capacity, and size of particles for the minced bones is investigated. Rational parameters for the thermal treatment of backbones are determined. Effect of vegetable additives of Jerusalem artichoke on functional and technological properties of the minced bone systems is examined. Safety indices of the food produced from thermally treated fish wastes are evaluated.
Trophodynamics of nekton communities in the epipelagic layer of the North-West Pacific in summer and winter seasons
Authors: Naydenko Svetlana V. , Khoruzhiy Alexey A.
Published: July 2021

Trophic links between nekton and plankton are analyzed using the data collected in trawl surveys conducted by Pacific Fish. Res. Center (TINRO) in the Pacific waters at Kuril Islands and East Kamchatka in June-July of 2004-2016 and in the central and western parts of the Subarctic Front zone and adjacent subarctic waters in February-April of 2009-2011. Spatial, seasonal and interannual dynamics of nekton communities are detected, as well as changes in their composition and abundance. The most significant changes were caused by mass migrations of subtropical species, as in summer of 2014-2016. In these cases, new components were involved in the food web and energy flows between the low and upper trophic levels were changed, in the first place concerning to copepods, then to euphausiids, amphipods, and small-sized nekton prey. There were no such significant interannual changes in the energy flows in winter. The estimates of daily and seasonal energy flows between low and upper trophic levels, as well as the consumption rate of forage resources indicate no excess of allowable grazing pressure upon forage resources in the upper pelagic layer of the surveyed areas.
Fecundity of the Far-Eastern flatfishes Pleuronectiformes. 2. Comparative taxonomic analysis: fecundity, abundance and distribution of the species
Authors: Diakov Yury P.
Published: July 2021

Comparative analysis is made for absolute, species-specific and total fecundity of 31 flatfish species in the North Pacific from North America to the Japan Sea. Normally the individuals of larger size have higher fecundity. Similarity between the species by fecundity dynamics in dependence on body length and age is evaluated. Significance of the absolute fecundity for abundance or distribution of the species is discussed. Generally, the species with medium or high fecundity are more abundant than those with low number of eggs. The widest distribution is intrinsic for flatfish species with medium length of the early pelagic stage of their life.
Clinical and radiation diagnostics of mixed forms of chronic sinusitis in combination with dentoalveolar pathology
Authors:   Pavlov First Saint Petersburg State Medical University, Saint Petersburg, Russia, Zubareva Anna A. , Karpishchenko Sergey A. ,   Pavlov First Saint Petersburg State Medical University, Saint Petersburg, Russia, Shavgulidze Marina A. ,   Pavlov First Saint Petersburg State Medical University, Saint Petersburg, Russia
Published: July 2021

The choice of diagnostic tactics and methods of conservative and surgical treatment of mixed polypous and polypous-purulent types of chronic rhinosinusitis in patients with concomitant dentoalveolar pathology, comorbid somatic pathology depends on the availability of clinic’s technical supply and the patient's mood to make the optimal choice. The literature does not provide a unified algorithm for the examination and management of patients with chronic mixed polypous and polypous-purulent types of sinusitis occurring against the background of dentoalveolar pathology. Aim. Justification of differentiated approach to the diagnosis of chronic mixed polypous and polypous-purulent rhinosinusitis in patients with dentoalveolar pathology. Materials and methods. In 200 patients with these types of rhinosinusitis, pathological changes in the paranasal sinuses, nasal cavity and dentoalveolar apparatus were revealed. Results. In activation of the focus of odontogenic infection, pathological changes in the nasal cavity and paranasal sinuses were more severe at the side of odontogenic infection focus; in inactive odontogenic process and in presence of rhinogenic provoking factors, the severity of pathological changes in the nasal cavity and paranasal sinuses were similar at both sides. With each relapse of activation of the focus of odontogenic infection, the duration and severity of sinusitis increased. Conclusion. The basic diagnostic method for examining patients with mixed polypous and polypous-purulent types of chronic sinusitis in combination with dentoalveolar pathology is cone-beam computed tomography, which let to assess the severity of odontogenic infection focus against the background of pathological changes in the nasal cavity and paranasal sinuses to select the optimal therapeutic tactics.
A patient with lacrimation at an otorhinolaryngologist consultation
Authors:   Pavlov First Saint Petersburg State Medical University, Saint Petersburg, Russia, Vereshchagina Olga E. , Karpishchenko Sergey A. ,   Pavlov First Saint Petersburg State Medical University, Saint Petersburg, Russia, Karpov Artemiy A. ,   Pavlov First Saint Petersburg State Medical University, Saint Petersburg, Russia
Published: July 2021

Lacrimation is one of the most common symptoms in ophthalmic practice. Most patients first visit an ophthalmologist, but the otorhinolaryngologist also plays an important role in determining the etiology of the disease and in the choice of management for such patients. This review presents a literature search that addresses the diagnosis and treatment of patients with epiphora. Identifying the cause of lacrimation is the main factor in making the correct diagnosis and choosing the optimal treatment method. Endonasal dacryocystorhinostomy is of particular importance. The multidisciplinary approach of the ophthalmologist and otorhinolaryngologist allows for the success of the epiphora treatment.
Diagnosis of lymphangioleiomyomatosis: the role of surgical lung biopsy. Case reports
Authors:   Pirogov Russian National Research Medical University, Moscow, Russia, Makarova Marina A. , Makarova Marina A. ,   Research Institute of Pulmonology, Moscow, Russia, Chernyak Aleksandr V. ,   Research Institute of Pulmonology, Moscow, Russia, Chernyak Aleksandr V. ,   Pletnev City Clinical Hospital, Moscow, Russia, Karnozova Tatiana N. ,   Federal Clinical Center for High Medical Technologies, Khimki, Russia, Brodskaya Olga N. ,   Pirogov Russian National Research Medical University, Moscow, Russia, Krasovskiy Stanislav A. ,   Research Institute of Pulmonology, Moscow, Russia, Krasovskiy Stanislav A. ,   Bochkov Medical Genetic Research Center, Moscow, Russia
Published: July 2021

Two clinical cases on the diagnosis of lymphangioleiomyomatosis without surgical lung biopsy are presented.
Description of COVID-19 infection course in a patient with multiple comorbidity: hairy cell leukemia, chronic generalized sarcoidosis and deep vein thrombosis in the lower extremities. Case report
Authors:   Central Research Institute of Tuberculosis, Moscow, Russia, Kuklina Galina M. , Makar'iants Natalia N. ,   Central Research Institute of Tuberculosis, Moscow, Russia
Published: July 2021

This article presents an unusual case of a mild novel coronavirus infection COVID-19 in a patient with multiple comorbidity, including hairy cell leukemia, chronic generalized tuberculosis deep vein thrombosis in the legs which manifested with mild symptoms of general intoxication only.
An Impact of first COVID lockdown on physical and mental health along with the quality of life in Adults belonging to Maharashtra state
Authors: Tejal Patel  , Aashi Bhatnagar  , Junneshwar Bidve  , Ashwin Kshirsagar  , Satyam Bhodaji  , Rekha Marbate  , Avani Dabri  , Nilofer Mogal
Published: July 2021

Amid rise in Covid-19 cases throughout the world including India. So study was initiated to find out the impact on different domains of health. A self-administered questionnaire was prepared, which consist of questions pertaining to the change in physical and mental health along with the quality of life during the lockdown period and was distributed through Google forms. During the survey, a total of 663 responses were collected, of which 604 responses were analyzed. Out of responses that were calculated, the physical health of 370 participants (61.30%) was improved, physical health of 111 (-18.40%) participants has deteriorated and the remaining 123 (20.30%) participants barely changed. The mental health of 274 (-45.30%) participants was declined, 201 (33.20 %) respondents tried to maintain a healthy mental state while 129 (29.30%) members maintained a peaceful state of mind. The quality of life of 290(48%) was adversely affected, 218 (36%) participants were able to maintain a healthier lifestyle, and their quality of life increased, while 96 (15.8%) remained unchanged. Quality of life is most negatively hampered whereas there is improved physical health status in the adult population. All the 3 components are Physical and Mental health along with Quality of life was affected due to Covid-19 related lockdown but out of these, physical health was 61.3% positively affected while mental health and QOL were deteriorated by 45% and 48% respectively.
A review on medicinal and commercial use of Marine Algae
Authors: Navaith Ahmed S  , Usharani B
Published: July 2021

Algae are a various group of autotrophic organisms that varies from unicellular to multicellular forms and found in saltwater as well as freshwater. They are key producers with a great source of nutrients and vitamins. In the last few decades’ discovery of biological activity from marine algae has increased significantly. Seaweed offers wide range of therapeutic possibilities both externally and internally as they are good source of neutraceuticals and potent drug. Seaweed is widely distributed along temperate and tropical coastlines of the world and they found to depths of 50-60 meters. Our focus is on the potential applications of the medical field. It is used as medicine, food and supplement for ages and also found in rudimentary applications in the cosmetics and industrial industry. The potential uses of algae in the medical field are based on properties like antioxidant, anticancer, antiviral, antimicrobial, antihypertensive, anti-inflammatory, antieczemic etc., The nutrient value in the algae envisages it as a potential supplement for vitamins. Algae is accepted as complete food as it is well balanced with carbohydrates, proteins, essential amino acids, minerals and vitamins and they are commonly named superfoods. Medicinal properties of different algae species attract the attention of scientists worldwide for the synthesis of pharmaceutical products that promote good health. Algae are also widely used in Obesity management which is one of the great challenges of the century.
Sosnovyi Mys Burial Ground in the Northern Angara Region: Analysis of the Mortuary Tradition and the Results of Radiocarbon Dating
Authors:   Irkutsk State University, Saveliev N. A. , Dudarek S. P. ,   Irkutsk State University, Timoshchenko A. A. , Lokhov D. N. ,   Irkutsk State University
Published: July 2021

The article presents the results of the study of 8 burial complexes of the Sosnovyi Mys burial ground. The article contains all the information about the history of the discovery and study of this archaeological site. We describe the geographical location and geomorphological structure of the burial ground deposits and give a complete description of the burial complexes No. 1–8 (excavation # 1, archaeological works of 2011). The analysis of individual elements of the mortuary tradition is carried out. Some similarities and differences with synchronous burials on the territory of the Southern Angara region have been revealed. All burials were divided into three groups based on the analysis of the mortuary tradition elements: 1) burials # 2, 4, 5, 7, 8; 2) burial # 3; 3) destroyed burials # 1 and 6. Published in the article radiocarbon dating results showed the Neolithic age of most burial complexes. The exception is burial No. 3, which belongs to the Early Bronze Age. Analyzing the radiocarbon AMS dates, we can state the high ratio of stable carbon and nitrogen isotopes ( δ 13 C and δ 15 C ) obtained for a human bone sample. These data indicate a high trophic level of the humans, which points out the presence of a freshwater reservoir effect (FRE). A special study of this problem has not been conducted yet for the Northern Angara Region, so it is not possible to determine the radiocarbon offsets. The complexes of the Sosnovyi Mys burial ground may be synchronous with the late phase of the Kitoi burial tradition (the finale of the Early Neolithic). However, if the value of the correction for the FRE is ever calculated and turns out to be the same as in the Baikal region (or more significant), then the age of the burials may be determined by the beginning of the Middle Neolithic, which is determined by the period 7027 ± 33 – 5571 ± 88 cal BP. The search for analogies to the features of the mortuary tradition and categories of grave goods with the materials of the Southern Angara region is carried out. The main problem of further study of the burial ground materials is the determination of the correction value of the FRE based on the dating of human bones, as well as finds and individual animal bones directly related to the burial complexes for the entire territory of the Northern Angara region.
Applying CLIL approach in Higher Edication
Authors:   Universidad Técnica de Babahoyo, Feijoó Rojas Kerly Jazmín
Published: July 2021

The realization of this work has been developed with the objective of analyzing the application of the CLIL approach for teaching English with a specific purpose and scaffolding strategies with students from a third level in bilingual secretarial school at the technical university of Babahoyo. This is the main reason that Bilingual secretarial school needs a change in the way to teach a foreign language through CLIL approach which is an exceptional alternative to integrate language and real-life contexts effectively in order to teach a foreign language in a spontaneous way. The main purpose of this volume is to design an intervention proposal based on the CLIL approach with the support of scaffolding strategies in the seventh semester of Bilingual Secretarial School in order to provide teachers a guide to make easier the application of this new teaching approach.
Tecnología Instruccional y Ambientes de Aprendizaje
Authors: Sánchez Yira Muñoz , Alonso-Lavernia María A. , Gálvez-González Fabián , Martínez-Lazcano Verónica , Castillo-Pérez Iliana
Published: July 2021

La tecnología instruccional ha llegado a formar parte de los ambientes de aprendizaje con el objetivo de redefinir los procesos de enseñanza y aprendizaje y éstos se beneficien de la diversidad de herramientas y oportunidades que ofrecen las Tecnologías de la Información y Comunicación para generar ambientes eficaces que permitan a cada estudiante participar de manera activa en la generación de su propio conocimiento. Estas condiciones han venido a reconfigurar el contexto y la forma en que opera la escuela moderna.
Control en cascada en la automatización del proceso de elaboración de pegamento implementando un PAC System RX3i y una HMI
Authors: Flores García Ernesto , Quezada Quezada José Carlos , Calderón Medina Rafael Víctor Hugo , Hernández López Atenas Samaria
Published: July 2021

El control en cascada es una técnica de control comúnmente empleada y de gran utilidad en procesos industriales automatizados, debido a las ventajas que ofrece. En esta estrategia de control interviene el controlador de la variable principal denominado controlador maestro o externo, y el controlador de la variable secundaria denominado esclavo o interno; la consideración más importante para desarrollar un sistema de control en cascada es que el control interno o secundario debe ser más rápido que el externo. De acuerdo con el grado de complejidad de los procesos, éstos suelen estar estructurados en distintas etapas, a través de las cuales la variable de control puede estar expuesta a perturbaciones que afectan su comportamiento y su control, que es hacia donde se orienta el control en cascada. El presente trabajo constituye un proyecto académico terminal de implementación, con enfoque a la automatización de procesos en la industria, en el cual se propone la aplicación de un control en cascada como alternativa de solución para el control de temperatura en el proceso de elaboración de pegamento SBC-55, integrando tecnología de automatización tal como un PAC System RX3i, SCADA, y una HMI.
Teletrabajo, modalidad que demanda compromiso y fiabilidad en los empleados
Authors: Romo Aviña María Fernanda , Acosta Velázquez Silvia Concepción , Pedraza Amador Elba Mariana
Published: July 2021

El teletrabajo es una modalidad que ha permitido a las empresas dar continuidad a sus actividades durante el periodo de contingencia por COVID-19, transformando no solo el espacio de trabajo, sino la relación empresa-trabajador. En este sentido se aprecia que el teletrabajo puede mejorar la productividad de los empleados, sin embargo, para lograr que se mantengan motivados es necesario que las empresas adopten estrategias para la evaluación de los resultados, que ayuden a promover el compromiso y la fiabilidad en sus trabajadores.

Como resultado de una amplia revisión documental, en el presente artículo se describen las características del teletrabajo, sus diferencias con la modalidad laboral convencional en entornos presenciales y la relevancia de la cultura organizacional, con el fin de analizar aquellos aspectos que motivan a los trabajadores a la ejecución de sus funciones sin que se haga necesario usar mecanismos de supervisión física.
Evaluación de riesgo ambiental por aguas negras en Tlaxcoapan, Hidalgo.
Authors: Sánchez Martínez Diana Verónica
Published: July 2021

La seguridad en el consumo de agua potable se ve amenazada por los riesgos ambientales como la contaminación industrial, doméstica y agrícola en la región de Tlaxcoapan, Hidalgo., hacia los mantos freáticos y suelo. En este lugar, el principal riesgo por el que atraviesa la población es contraer enfermedades intestinales por contaminantes biológicos, por lo que se exponen los principales elementos de una evaluación ambiental y las recomendaciones para el manejo de riesgos ante contextos similares que permitan salvaguardar la salud poblacional.
Crítica constructiva a la asignatura de Ecuaciones Diferenciales, perteneciente al tercer semestre de la licenciatura en ingeniería industrial, impartida en una universidad del centro-sur del país
Authors: Molina-Ruiz Héctor Daniel
Published: July 2021

La educación en México, juega un rol importante en el desarrollo del país. Considerando que los profesionistas egresados de la universidades públicas y privadas, tendrán en sus manos las decisiones de las organizaciones públicas y privadas en México y en el mundo, es necesario que la impartición de educación se someta a proceso de análisis, reflexión y mejora. Lo anterior, con el objetivo de asegurar la calidad de la educación, impartida por las universidades del país. El presente documento, constituye un ensayo de reflexión al respecto de la materia de ecuaciones diferenciales, perteneciente al tercer semestre de la licenciatura en ingeniería industrial, impartida en una universidad del centro-sur del país.
COVID-19 en el embarazo y la lactancia materna
Authors: Godoy Colin Estefania , Aparicio Soto Carlos Alberto , Acevedo-Silva Josús Manuel
Published: July 2021

El COVID-19 representa una crisis global, debido a que es una enfermedad emergente con un rápido aumento de casos y muertes desde su primera identificaciòn en Wuhan, China en diciembre de 2019. En medio de este brote se ha centrado la atenciòn en un grupo vulnerable de personas, las embarazadas. Se ha descrito que el virus SARS-coV-2 tiene predilecciòn por el receptor ECA2 presente a nivel placentario, condicionando una restricciòn al crecimiento intrauterino y/o parto pretérmino. Aunado a lo anterior se han planteado preocupaciones sobre si el virus del SARS-CoV-2 podría transmitirse de la madre positiva al COVID-19 al recién nacido a través de la leche materna. Es por ello, que en este trabajo se abordó una recopilación de resultados de estudios epidemiológicos sobre los efectos del COVID-19 durante el embarazo y lactancia materna.