bluuebunny/crossref_metadata_2025 huggingface dataset:
Obtaining and determining antioxidant activity of polyphenolic extracts obtained from propolis
Authors:   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Ciobanu Cristina , Guranda Diana ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Ciobanu Nicolae ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Cojocaru-Toma Maria ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Solonari Rodica ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova
Published: October 2021

Over the years, time has given us a whole series of novelties in the fi eld of natural medicine, which have managed to truly prove their value and keep up to date. Th e application of apitherapy has been known since ancient times and today the interest in this branch of natural medicine is growing worldwide. Among bee products, with an indisputable value is also propolis, which is currently widely studied, and as a result is the subject of multiple therapeutic uses based on evidence. Research in the fi eld of propolis preparations has expanded considerably and is of major medical and pharmaceutical interest. Propolis is an excellent anti-infl ammatory, healing and epithelializing, hepatoprotective, immuno-biostimulator, capillary tonic and tissue regenerator. It is remarkable that, due to its complexity and compositional variability, propolis retains its full antimicrobial capacity, unlike synthetic antibiotics, which bacteria develop resistance over time, requiring the periodic introduction of new antibiotics. Th e study on obtaining and analyzing propolis extracts, by determining the total polyphenolic and antioxidant activity, by scavenging method of the free radical DPPH, is an important premise for the use and development of new pharmaceutical forms containing propolis for multiple curative-prophylactic uses based on local raw materials.
Biopharmaceutical and pharmacokinetic aspects of hopantenic acid in pediatric pharmacotherapy
Authors:   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Ciobanu Cristina , Guranda Diana ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Oprea Valentin ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova
Published: October 2021

The development of efficient, high-quality, harmless and affordable pharmaceutical forms for drug treatment in pediatrics is a current task of contemporary pharmacy. Currently, psychiatrists and neurologists from various curative-prophylactic institutions prescribe for children and adolescents nootropic preparations in the form of tablets, powders and syrups, in various neurological diseases, the share of which, according to national and international statistics, is constantly increasing. Currently, the prescription of hopanthenic acid is gaining popularity, thanks to its neuroprotective, neurotrophic, neurometabolic, antidepressant, anxiolytic and analgesic effects. The presented paper has as starting point the analysis of the structural-molecular properties of hopanthenic acid, exposed by biopharmaceutical study, pharmacokinetic parameters and strategies for optimizing pharmaceutical formulations with gastric release.
Nutritional status in the elderly with fragility syndrome
Authors:   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Popescu Ana , Soric Gabriela ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Lupascu-Volentir Felicia ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Negara Anatolie ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Popa Ana ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Cosciug Elena ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Stoicova Irina ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova
Published: October 2021

During the twentieth century life expectancy has increased significantly and it was estimated that by 2030, 21% of the world’s population will be >65 years. According to observations, fragility syndrome and nutritional status problems are very common among the elderly population, especially in old age. Fragility syndrome has a multifactorial origin and is a fundamental risk factor for deteriorating health and the installation of disability in the elderly. The purpose of the study was to establish the interrelationship of nutritional status with fragility syndrome and the impact on the functionality of the elderly. The information was searched in the PubMed, Hinari, Cochrane, Elsevier, Springer databases, including the offi cial pages of the European Geriatric Society, European Society for Clinical Nutrition and Metabolism, to identify scientifi c journals dedicated to nutrition in the elderly with fragility syndrome. Studies published in the period 2010-2020, in romanian and english, were selected. Th e specialized literature, scientifi c journals, clinical studies were researched, from which the most relevant 34 were selected. Elderly malnutrition is currently a global problem, its prevalence in people is 10-40%. Th e diagnosis of malnutrition aims to identify it and elucidate the causes. Weight loss is a criterion of the development of fragility, and nutrition-focused interventions can prevent the progression of fragility syndrome and loss of autonomy with the onset of dependence. Fragility is a geriatric syndrome that aff ects several areas of physical status, and malnutrition is one of the risk factors for this syndrome.
Nutritional status and determinants of malnutrition in institutionalized elderly people, provisional data
Authors:   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Soric Gabriela , Lupascu-Volentir Felicia ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Popescu Ana ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Cosciug Elena ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Popa Ana ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Stoicova Irina ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova, Negara Anatolie ,   Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova
Published: October 2021

Nutrition is an important factor for health, physical and cognitive function, vitality, quality of life and longevity. Elderly people oft en have low food intake, induced by multifactorial causes, as a result, malnutrition is an independent risk factor for increased morbidity and mortality, regardless of the underlying pathologies (chronic organ failure, cognitive impairment, cancer, cardiovascular disease, type 2 diabetes etc.) including overweight or obese subjects.The prevalence of malnutrition varies from 4% to 10% in the elderly population from the community, from 15% to 38% for institutionalized elderly people and from 30% to 70% for hospitalized ones. The purpose of this study was to assess the nutritional status of institutionalized elderly people and establish correlations between the determinants of malnutrition and fragility syndrome.Th e epidemiological study is part of the project 20.80009.8007.25 “Fragility: diagnosis and prophylaxis in relation to medicopsychosocial problems of the vulnerable elderly”, included 50 patients institutionalized in the Republican Asylum for the Disabled and Retired in Chisinau.All persons were examined by the complex geriatric evaluation, approved by the order of the Ministry of Health no. 619 of 07.09.2010. According to the results, both malnutrition and the risk of malnutrition were high in institutionalized elderly people.Among the determinants of malnutrition, the highest association had the number of concomitant diseases, decreased functionality of the elderly, the presence of depression syndrome and cognitive disorders. At the same time, the malnutrition syndrome correlated with the fragility criteria but also with the degree of severity of frailty of the institutionalized elderly people.
Biochemical Studies of Different Parts of Afzelia Africana Smith
Authors: C.U. Okeke , P.N. Okeke , F.C. Iroka , M.E. Orji
Published: October 2021

Phytochemical and proximate analysis was carried out on the seed, leaf, stem bark, stem, root bark and root of Afzelia Africana plant. This analysis revealed that phytochemical constituents were mostly predominant in the leaf and lower in other parts of the plant. Steroid was high in the root (0.49±0.01) and lower in the stem (0.04±0.01). Phytate content was high in the seed (0.40±0.03) and lower in the stem. Carbohydrate, protein, fats, ash and moisture content were high in the seed. Fibre was high in the stem (61.1±0.23) and lower in the seed (3.61±0.06). Vit. C (ascorbic acid) was the highest vitamin component in all the plant parts with leaf being the highest (12.69±1.02) and root having the lowest (2.64±1.24). The stem has the lowest content of Vit. A, Vit. B2, and Vit. B3. The seed has the highest calcium content (188.80±5.54) while the leaf has the lowest (28.84±0.25). Stem bark has the highest magnesium content (10.08±0.94) and lowest in the root (4.96±0.14). Potassium and phosphorus were high in the leaf (368.67±3.06) and low in the stem. Sodium was high in the seed (11.63±0.40) and lower in the root (5.23±0.23). This study shows that the seed of Afzelia africana has the highest biochemical content and could serve as a good food supplement for man and livestock. The presence of phytate is known to induce mineral-related deficiency, its consumption also provides protection against a variety of cancers via its antioxidant properties.
Comparison of Growth Performance of three Strains of Clarias gariepinus: Hybrid Strain, Selective Breeding Strain and Wild Strain Reared in Concrete Tanks
Authors: Ntaila Yamikani Willie
Published: October 2021

A comparative study was conducted to investigate the growth performance of three strains of Clarias gariepinus reared in concrete tanks. The experiment was carried out for the period of three weeks. Three strains of Clarias gariepinus which were compared were hybrid strain, selective breeding strain and the pure/wild strain. The experimental fish were randomly assigned to three experimental groups. Each treatment was therefore replicated three times with 60 fry per replicate in concrete tanks. At harvest there was no significant difference among Hybrid strain, Selective breeding strain and wild strain (P˃0.05) in fish’ final body weight (1.83±0.11, 1.178±0.46 and 1.739±0.42). The SGR for hybrid strain, selective breeding strain and wild strains were 12.93 ±0.23, 4.53±0.22and 12.81±0.26. The survival rate for hybrid strain, selective breeding strain and pure strain 70%, 80% and 66.66 %respectively. The was no significant difference (p˃0.05) in FCR (2.12±0.01, 2.12±0.03 and 2.11±0.01) for hybrid strain, selective breeding strain and wild strain respectively. Though the difference was not that significant the pure Clarias gariepinus had the lower FCR as compared to the others. Therefore, this study recommends that hybrid Clarias gariepinus has a good performance as compared to the selective breeding strain and the wild Clarias gariepinus.
An Analysis of the Factors Contributing to Elephant Population Fluctuations in SWRA using Ranger-based Knowledge and Perceptions
Authors: I. Mahakata , I. Mapaure
Published: October 2021

This study aimed at examining local ranger-based knowledge and perceptions on explaining contributing factors to variations on elephant fluctuations seasonally and over a long period in Sengwa Wildlife Research Area following a massive decline of elephants by nearly 76% after the 2014 National Aerial Survey done in Sebungwe Region, Zimbabwe. Data were collected between 1st and 20th August 2020 using a purposive sampling approach administered to questionnaire to resident SWRA rangers (n = 25). Our results show that rangers considered a combination of factors that may have affected elephant fluctuations in SWRA including poaching, migration, settlement and impact of climate change. However, our results suggest that rangers had inadequate knowledge about elephant migration destinations. Moreover, mixed perceptions about the impact of trophy hunting, poaching and climate change-induced factors were recorded from the participants. The results contribute to a growing understanding of poaching, climate change, trophy hunting and human settlement on elephant behaviour. The study recommends improvement in elephant monitoring through investments in elephant collars and radio tracking to better understand elephant daily and seasonal dispersal movements.
Assessment of Big Cats Abundance and Distribution in Sengwa Wildlife Research Area (SWRA): An Analysis of Multiple Methods
Authors: Mahakata Innocent
Published: October 2021

Large carnivores are considered key species and their presence signify health of the ecosystem. Mostly used methods to establish big cats abundance and spatial distribution in SWRA consist of spoor survey, individual observations, analysis of patrol data and interviews with safari operators. In this study, four methods were used to establish current abundance and distribution of big cats in Sengwa and to find advantages and disadvantage for each method used. To do this, spoor survey along twelve transects were done between 13th to 20th April 2020. Oral interviews with local professional hunters and park managers was done between 1st and 10th April 2020, whilst analysis of patrol reports from January 2018 to December 2019 were also done. Descriptive statistics was used for analysis of interview data. For other three methods, data were summarised in excel and quantitatively analysed. Mapping of spatial distribution of big cats from secondary data and spoor surveys were done in QGIS software. Five lion spoors and twenty-one leopard spoors were recorded during spoor survey. Two individual leopards and zero lions were also recorded. Lion spoors were mostly recorded along river valleys while leopard spoors were recorded in different habitats and terrain. Future related studies should focus on use of other survey design and combination of methods such as radio calls and camera traps as well as use of GPS enabled collars for monitoring and estimating abundance.
Topo-edaphic, Vegetation Cover and Type Influence on Spatial Distribution of Gullies in Sengwa Wildlife Research Area (SWRA), North West Zimbabwe
Authors: I. Mahakata , C. Hungwe , M. Ngoni , S. Matindike , P. Gonhi , Y. Masumba , M. Kudzai
Published: October 2021

Gully erosion is a common phenomenon in arid and semi-arid areas and is mostly influenced by soil type, topography, vegetation type and cover. The objective of the study was to determine the effect of topo-edaphic, vegetation type and cover on gully occurrence, hence map their spatial distribution in SWRA. A conventional method was used where field visit to known gully sites was done. At each site, GPS points were marked at three points, that is, at the head site, the middle and lower end of the gully. Soil samples, gully width, depth, length, vegetation type and cover were recorded for each point where GPS coordinates were collected. GPS points were overlaid on SWRA processed vegetation, soil and topographic map for analysis on the spatial distribution of gullies. Fifty-six gullies were recorded with highly affected areas on the southwestern side of the park. Associated soils types were clay and loam of the Madumabisa mudstone, colluvial and alluvial located at altitudes below 1000 meters. Gully occurrences were sighted more in mopane dominated woodlands with few recorded in areas dominated by acacia woodlands and on the edges of miombo woodlands, which occupy the high grounds of SWRA. Gully length varied from 20m in less developed gullies to 2520m for mature gullies with volumes ranging between 52m3 and 4649.4m3. Hence, topography, soil type, vegetation cover and type influence gully location and occurrence. Future research should aim to monitor changes in gully development using remote sensing as it provides a great potential for monitoring gully changes across the landscape.
Impact of External Debt on Economic Growth in Nigeria
Authors: Fortune Uzochukwu Ojelubechukwu
Published: October 2021

This study examined external borrowing and economic growth in Nigeria covering the period 1981 – 2019. The main objective of the study is to ascertain the impact of external borrowing on economic growth in Nigeria. Times series data on GDP, external debt, exchange rate, external debt servicing payments and inflation were extracted from the Central Bank of Nigeria (CBN) statistical bulletin 2018 was used for the study. The method of data analysis and evaluation were the unit-root test which was used to ascertain the stationary status of the variables, the linear regression with the application of Ordinary Least Squares (OLS) technique and the Granger causality analysis. The major findings of the study are that all the variables are stationary at first difference I(1), external debt has a negative and insignificant relationship with economic growth in Nigeria ( = -0004912, p-value = 0.6944 > 0.05) and there is no causality relationship existing between external debt and economic growth in Nigeria. The study therefore recommends that the federal government should acquire external debt largely for economic reasons rather than social or political reasons. This would increase the Gross Domestic Product (GDP) of the nation.
Artery of Adamkiewicz and the clinical repercussion of its lesion in thoracoabdominal surgeries: a systematic review
Authors: De Sena Idna Lara Goes , Lima Maria Regina Cardoso Linhares Oliveira , Jereissati Lia de Oliveira , Da Costa Rafaella Iughetti , Araújo Victor Oliveira , De Oliveira Isadora Mônica Ponte , Freitas Lara Maria de Oliveira Paiva , Maia Maria Victoria Rocha Fontenele , Lócio Aline Moreira , Dos Santos Júlio César Claudino
Published: October 2021

The knowledge of the spinal cord irrigation is important for the therapeutic planning of aortic pathologies; however, its vasculature is complex due to the caliber of its arteries that pass through a three-dimensional network with great anatomical variability. Its clinical importance is evidenced during the preoperative procedure of thoracic and thoracoabdominal aortic surgeries, because its identification is essential for the prevention of spinal cord injuries. This study consists of a literature review, in which searches were conducted in the databases - Bireme, Science Direct, Pubmed and Lilacs. Articles published between 1999 and 2020, written in English, Portuguese or Spanish, were selected. The search was conducted using the descriptors Anatomy, Spinal Cord Irrigation and Spinal Cord Ischemia. The Adamkiewicz artery is the main artery responsible for the arterial supply to the lower part of the spinal cord. Thus, paraplegia is a complication of this type of surgical approach resulting from ischemic suffering of the spinal cord during the process. Therefore, further study on these factors should be encouraged, because the preservation of this vessel is relevant given the search for protection of the spinal cord and the maintenance of its functions in this type of procedure.
PENGARUH KUALITAS PELAYANAN DAN KUALITAS PRODUK TERHADAP KEPUASAN PELANGGAN PADA PT ANEKA TATA NIAGA
Authors: Hermanto Hermanto , Nainggolan Nora Pitri
Published: October 2021

The purpose of this study was to determine the effect of service quality and product quality on customer satisfaction at PT Aneka Tata Niaga using slovin sampling technique with a margin of error of 5% of 155 customers so as to produce 112 respondents who are customers at PT Aneka Tata Niaga. Data collection methods are questionnaires. Data quality test in this study uses the validity and reliability test, the classic assumption test and the influence test in this study using multiple linear regression analysis and coefficient of determination analysis (R2), while the hypothesis testing in this study uses (t test) and (F test ) by using SPSS version 23 software program. the results show that service quality has a partially significant effect on customer satisfaction and product quality has a partially significant effect on customer satisfaction, and service quality and product quality together have a significant simultaneous effect on customer satisfaction at PT Various Commerce. Keywords: Service Quality, Product Quality, Customer Satisfaction
Effect of Rice Conch Shell Powder as a Partial Replacement of Cement in Normal Concrete
Authors: Pakanan Reiner Putra , Tanijaya Jonie , Sanggaria Olan Jujun
Published: October 2021

Along with the increasing pace of development, many methods and research have been carried out and developed aimed at increasing the strength of concrete, one of which is by utilizing waste rice snail shells as a partial replacement of cement. This snail is considered a pest for farmers. Snail carcasses can also damage the environment and cause a bad smell. This can be used and utilized as an alternative material in concrete mixtures. The percentage of use of rice snail shell substitution varied, namely 0%, 10%, and 15%. The tests carried out were the compressive strength test, split tensile strength test, flexural strength test, and the modulus of elasticity of concrete with a concrete quality of 25 MPa. The test objects used were cylinders measuring 15 cm and 30 cm high and beams measuring 60 cm × 15 cm × 15 cm with variations in age of 7 days, 21 days, and 28 days. The highest value was obtained at 10% snail shell variation with 27,540 MPa, 2,735 MPa, 4,131 MPa, respectively. so that the 10% snail shell variation used in this study is still safe to use as a cement substitution material in normal concrete mixtures.
Tratamiento no exitoso de tuberculosis en reclusos ecuatorianos: hacinamiento y otros factores asociados
Authors: Gallegos Cobo Andrés Eduardo , Fong Betancourt María Isabel , Gabriel Flores Lenin Carlos , González Chico María Gabriela
Published: October 2021

La tuberculosis es uno de los principales contribuyentes a la carga mundial de morbilidad y ha recibido una atención considerable en los últimos años, especialmente en los países de ingresos bajos y medianos, donde está estrechamente asociada con el VIH / SIDA. El entorno penitenciario se ha citado a menudo como un posible reservorio de tuberculosis. La mala adherencia al tratamiento es común a pesar de diversas intervenciones destinadas a mejorar la finalización del tratamiento. Se realizó un estudio transversal, retrospectivo y descriptivo entre internos de dos centros penitenciarios, analizando el diagnóstico de TB, la comorbilidad TB-VIH y la finalización del tratamiento a partir de los registros nacionales. Se probó la significación de los factores de riesgo mediante análisis bivariado. Se consideró un valor de p <0,05 como estadísticamente significativo. Se observó una asociación significativa entre la TB y grupo etario (p=0,0032), tratamiento no exitoso (p=0,0093) y coinfección TB/VIH (p<0,001). Factores de riesgo asociados como el VIH y el tratamiento no exitoso resaltan la necesidad de revisar las estrategias de tratamiento con un enfoque interinstitucional.
Diseño y validación de cuestionario de conocimientos, actitudes y prácticas de la enfermedad de Chagas
Authors: Olivo Torres Rosita Elizabeth , Peñafiel Jaramillo Kenia Mariela , Alfonso González Iruma , Orozco Noboa María Fernanda
Published: October 2021

La enfermedad de Chagas es considerada una afección desatendida a nivel mundial que afecta principalmente a la población de escasos recursos en Latinoamérica, con aproximadamente 10 millones de personas afectadas. Se estima que en Ecuador más de 200000 personas son seropositivas para T. cruzi y 4.400 adquieren la infección anualmente. Se han realizado estudios en zonas endémicas como Loja, Manabí, Guayas y El Oro, las cuales constituyen el hábitat de cinco especies de triatómicos, responsables de la transmisión vectorial de la enfermedad, no obstante, se requiere información epidemiológica actualizada en áreas consideradas prioritarias. Es por ello, que se realizó un estudio descriptivo transversal para diseñar y validar un cuestionario de conocimientos, actitudes y prácticas de la enfermedad de Chagas en las 5 áreas prioritarias en Ecuador. Se diseñó un cuestionario inicial de 36 ítems, empleado para un estudio piloto con 5 expertos claves que validaron dicho instrumento, Para evaluar la validez de contenido se empleó la V de Aiken (0,82) y la validez del constructo fue evaluada a través del análisis factorial exploratorio, del cual se obtuvieron 3 dimensiones; ´ mientras que la prueba de alfa de Cronbach (>0,7) demostró la consistencia interna del instrumento. La versión final del cuestionario contentiva de 31 ítems fue aplicada a 20 participantes con características epidemiológicas diferentes de cada área prioritaria, demostrando que el mismo reúne todas las condiciones de validación y confiabilidad y puede ser aplicado en otros estudios epidemiológicos relacionados con la enfermedad de Chagas
Primary Abdominal Pregnancy With Haemoperitoneum: An Extremely Rare Case Successfully Managed during COVID 19 Pandemic
Authors: Katke Rajshree Dayanand
Published: October 2021

The abdominal pregnancy is a very rare type of ectopic pregnancy. This can be a primary abdominal ectopic or a secondary abdominal following rupture of tubal or corneal ectopic. this case is reported for its rarity and the challenging surgery required for its management as described below for a successful maternal outcome.
重讀涂爾幹：社會認識論與記憶社會學間的系譜學考察
Authors: 黃敏原 黃敏原
Published: October 2021

本文旨趣有二，其一乃透過法國思考脈絡與法文閱讀來對涂爾幹進行重新耙梳。關於宗教研究的探討，筆者認為涂氏對之具有終身連續的「一貫關懷」，而與既有研究中指出的「中途轉向」說不同。另外，涂氏系列宗教研究中提出的核心命題如「神聖性之起源」及「群體之分類認識能力」，實乃導源於「社會」這個根源等見解，正是一種「知識社會學」的進路。此種特有的「集體思維」學說建立在「社會事實說」等基本預設上並開展出法式結構主義的思想風格。建立在上述對涂氏社會認識論的考察，本文欲探討涂爾幹與「涂爾幹學派」中阿部瓦克思(M. Halbwachs)之間的思想接續。作為「記憶社會學」的開創者，學界慣常指稱阿氏乃涂氏門生。但本文卻將兩人的「師徒關係」重新置疑：阿氏身上是否承襲涂氏思維的「學術DNA」？如果是，又是在那些點上有所關連？此應透過嚴謹的學術考據加以證成。透過兩人學術上核心概念的比對、基本假設的對照以及邏輯推演的相互參照，本文指出其在思想系譜上的繼承性。由此，不只反省涂氏與「涂派成員」間之關連，同時也回過頭重估涂氏學說對後世記憶研究與相關文化研究等開展之貢獻。

 

This article clarifies the specificity of Durkheim’s social epistemology, particularly his study of religion. Durkheim held that both “divine nature”and the collective capacity for classification are derived from “the Society.”This approach, as well as his research on “social facts” and “the dualism of human nature,” considerably influenced later sociologists. Specifically, Maurice Halbwachs inherited Durkheim’s ideas to develop his theory on the sociology of memory from a social psychology perspective. By comparing their core concepts, theoretical assumptions, and inferences, this article identifies the theoretical genealogy between Durkheim and Halbwachs. Additionally, it highlights the contributions of some Durkheimian perspectives to the development of cultural studies.

 
ТЕПЛОИЗОЛЯЦИОННЫЙ МАТЕРИАЛ НА ОСНОВЕ ОСТАТКОВ ПИРОЛИЗА УГЛЯ И ОТХОДОВ СТЕКЛА
Authors: Abrahamyan M.V. , Movsisyan B.V. , Avetyan R.A. , Torosyan G.H.
Published: October 2021

In recent decades, materials with high thermal resistance, refractory, non-toxic, with high mechanical characteristics, durable, affordable easy-to-install thermal insulation materials are of great interest. Durability of available thermal insulating materials, for example cotton insulators is from 10 to 20 years, foam is from 7 to 10 years. During burning process of foam plastics, high-toxic material called phosgene is released.
At the same time, fungus forms during the process, and it has adhesion incompatibility with cement. Mineral wool decomposes over time, turning into powder, and the installation of external thermal insulation materials in buildings requires surface finishing to protect it from direct weathering, which incurs additional costs.
Recently, composite glasses, glass-crystalline materials synthesized from slag-ash wastes of rocks are in great demand.
The goal of this research is to study coal and solid waste of coal pyrolysis as a raw material for the foam glass production.
In this work, the chemical, phase and mineralogical composition of coal from the Magavuz deposit in the Republic of Artsakh and solid residues of its catalytic pyrolysis have been studied by the modern methods of analysis.
Based on the results, a heat-insulating material has been developed, in which pyrolysis waste also plays the role of a gas generator. The selected heat treatment mode ensures the production of heat-insulating foam with high porosity, uniformly distributed in the volume, with sufficient mechanical properties.
РАЗРАБОТКА КЕРАМИЧЕСКИХ ТЕПЛОГЕНЕРИРУЮЩИХ СОЛНЕЧНЫХ КОЛЛЕКТОРОВ-ПЛИТ
Authors: Апоян С.С.
Published: October 2021

An urgent problem of the modern world is the global warming of the Earth, fraught with a climatic catastrophe. In addition, an important strategic task for Armenia is the issue of reducing the costly imported risky supplies of hydrocarbon and nuclear fuel and increasing the country's energy security.
The Union of Armenian Ceramics Manufacturers has developed a new generation of ceramic heat-generating solar collector- plates, which allow converting solar energy into thermal energy of hot water in a more efficient, easily accessible and cheap way. Water heated in such an environmentally friendly and widely available way can be used for hot water supply (DHW) and additional auxiliary heating of premises. In Armenia, to obtain hot water for domestic and technical needs, electricity is used and hydrocarbon fuel is burned in an amount equivalent to USD 200...300 million per year. At the same time, tens of thousands of tons of carbon dioxide, water vapor and other greenhouse gases are emitted into the atmosphere.
With the massive introduction of ceramic solar collector plates, for example, in the form of roof tiles or other facade elements, it is possible to obtain very cheap hot water for hot water supply and warm air for additional auxiliary heating of premises in the spring - autumn seasons of the year. The mass introduction of collector tiles (the so-called "heliofication" of buildings, countries) will save a significant amount of electricity, natural gas and other types of fuel for heating water, and significantly reduce the emission of greenhouse gases into the atmosphere. The large-scale introduction of solar roof tiles in several countries in the region is likely to help mitigate the global warming. The solarization of Armenia will also make it possible to reduce the expenditure of financial resources for the purchase of energy carriers and direct the saved funds to the development of the country's economy.
THE ECOLOGICAL-TOXICOLOGICAL CONDITION OF THE
WATERS IN THE SOTK AND MASRIK RIVERS AND IN THE
ARABLE LANDS OF THE NEIGHBORING AGROCENOSIS UNDER
THE INFLUENCE OF THE SOTK MINE EXPLOITATION
Authors: Galstyan M.H. , Sargsyan K.Sh. , Matevosyan L.G. , Gharibyan P.A. , Galstyan S.S.
Published: October 2021

Upon the investigations it has been disclosed that along with the increase of the dimensions in the mining industry, as well as with the increase of rock dump amounts, the organoleptic and chemical indices of the waters in the Sotk and Masrik rivers have also grown up. The amount of suspended particles per liter of water has increased for the last 10 years by 210%...317.0% or by 32.1 mg/l in the waters of the Sotk River and by 13.2 mg/l in the Masrik River. Similar changes have also been observed in the indices of nitrates, sulphates and hydrogen values, which are mainly related to the chemical composition of the mountainous rocks, where the alkaline chemicals mainly predominate (Ca, K, Na, Mg, etc.) and also to the intensive agricultural activities conducted in the given area, particularly in the riverine areas, as well as to the development of the livestock sector.
Meanwhile, it has been found out upon investigations that both in the previous 10 years and similarly in 2019, the content of heavy metals and other chemical elements in the Sotk and Masrik Rivers and in the lands of their adjacent agroecosystems, the total intensity of their geochemical stream considerably varied and fluctuated related to the exploitation of the Sotk mine and to the changes of the ore mining dimensions. To reduce the mobility of heavy metals and to improve the ecological-toxicological conditions of the mentioned rivers and ploughlands irrigated with those waters, it is necessary to continuously add the lime amount CaO in the acidic drainage of the mining site so that the water environment reaction would hold up at least within the range of 9 (pH 9). Besides, individual heavy metals (such as tungsten, molybdenum, vanadium, etc.) are more active in the alkaline medium, hence, for their refining it is necessary to install filters as well.
РАЗРАБОТКА БАЗЫ ДАННЫХ ПРОСРОЧЕННЫХ ХИМИЧЕСКИХ ВЕЩЕСТВ И ОТХОДОВ
Authors: Тадевосян А.В. , Аперян А.Ж. , Байбурдян А.В.
Published: October 2021

Ha различных предприятиях и учреждениях накапливаются отходы и просроченные вещества, которые не подлежат использованию на данном предприятии. Производственные отходы на предприятиях химической отрасли являются одним из главных загрязняющих элементов для окружающей среды. На данный момент никто не учитывает их количество, которое с каждым годом все увеличивается. Неправильное хранение и нарушение норм утилизации отходов вызывают загрязнение вод и грунтов, изменение биосферы и прочие негативные последствия. В рамках производства сложно организовать утилизацию отходов, если данное предприятие не специализируется конкретно на этой задаче. Большое количество отходов химических веществ образуется в лабораториях соответствующих кафедр вузов и научно-исследовательских институтов. Помимо этого, годами в лабораториях накапливаются различные вещества, в основном просроченные, для многих из которых, в силу их опасности для жизни и здоровья людей, необходимо соблюдение особых условий для хранения и использования. В настоящее время большое количество отходов и просроченных химических веществ накапливается на полигонах, складах и могильниках. Однако эти накопления не могут быть вечными - правильнее их использовать (по возможности) в виде исходного или вторичного сырья для других производств, либо подвергать их обезвреживанию и переработке.
Для управления обращением химических веществ, в основном касающихся отходов и просроченных веществ, необходима информация, которая должна быть всеобъемлющей, подтвержденной и обновляемой.
Разработанная система на базе данных служит для сбора, накопления, хранения информации, а также её эффективного использования для различных целей. Она позволяет минимизировать количество вновь приобретенного химического вещества, при этом из обращения выйдет складируемое вещество. Что касается отходов, то здесь, также имея полную информацию, можно решить проблему их утилизации или обезвреживания.
РАЗРАБОТКА ТЕХНОЛОГИИ ХЛЕБОБУЛОЧНЫХ ИЗДЕЛИЙ С ПРИМЕНЕНИЕМ ЛИСТЬЕВ СТЕВИИ
Authors: Ханамирян К.С.
Published: October 2021

Основная цель исследования – разработка технологии и рецептуры нового вида хлебобулочных изделий функционального назначения с применением листьев стевии в качестве сахарозаменителя. С помощью травы стевии можно заменить сахар, так как в ее составе присутствует стевиозид, который в 10…15 раз слаще сахара. При больших количествах стевии ее вкус становится горьковатым.
В стевии имеется также хром, который помогает усваиваться сахару в крови. Таким образом, стевия облегчает действие инсулина. В стевии присутствуют селен, медь, которые прекрасно улучшают состояние кожи. В листьях стевии присутствует цинк - микроэлемент, который необходим для производства белка в организме. Этот компонент нормализует выработку гормонов и отвечает за рост и здоровье волос. Наличие цинка в составе стевии обеспечивает иммуномодулирующее действие от приема добавок и продуктов на ее основе. Употребление этого минерала необходимо для нормального состояния волос, ногтей, кожи, зубов и десен. Листья стевии также стимулируют выработку гормонов надпочечниками.
Кроме того, стевия устойчива к воздействию кислот и совместима с разными фруктами, даже апельсинами и лимонами. Также этот заменитель сахара частично используется в пищевой промышленности для создания диетических сладостей. Такое применение ее в кулинарии обосновано тем, что она абсолютно не теряет своих свойств при нагревании, в отличие от некоторых других заменителей сахара.
В настоящей работе проведено исследование применения сахарозаменителей, в частности природного заменителя сахара стевии и продукта ее переработки стевиозида, и их влияния на больных диабетом.
ИССЛЕДОВАНИЕ ЗАКОНОМЕРНОСТЕЙ СОРБЦИИ НЕКОТОРЫХ МЕТАЛЛОВ ГЛАУКОНИТОМ
Authors: Sirakanyan M.A. , Kotikyan S.Yu.
Published: October 2021

The imperfection of industrial wastewater treatment technologies has led to the fact that a huge amount of inorganic ecotoxicants of various salts of heavy metals gets into water bodies. The extraction of a valuable component from industrial solutions seems to be economically and environmentally justified for enterprises in Republic of Armenia. Therefore, one of the directions of greening the industrial technologies is the use of local wastewater treatment plants to remove the heavy metal ions when discharging wastewater into water bodies. Most often, for these purposes, the sorption method of purification is used using various sorbents based on a wide variety of mineral raw materials.
The search for ion exchangers of high capacity, selectivity, and low cost is of great importance, since ion exchange has taken an important place among the main methods of wastewater treatment.
It is known from literature that the natural mineral glauconite, due to its structure and physicochemical properties, has the ability to extract heavy metals from water bodies. The presence of glauconite from the Garni deposit of RA predetermines its use, and the surface modification makes it possible to use it in water treatment.
The results of kinetic studies of sorption of nickel and zinc ions under static conditions on a composite glauconite sorbent by constructing concentration isotherms are presented. The static capacities on the sorbent for zinc and nickel cations are determined.
The kinetic dependence of the adsorption of zinc and nickel cations on the studied sorbent is investigated to determine the time of arrival of the equilibrium state. The limiting stage of the sorption process is determined by establishing the mechanism of interaction of the metal cation with the active center of the adsorbent. From the data obtained, it is found that the linear dependence of At/Amax indicates that the adsorption process at this stage is limited by gel external mass transfer, and the subsequent deviation - by the enhancement of the effect of external diffusion on the adsoption rate.
Ciudadanía y cultura cívica en estudiantes universitarios interculturales
Authors: González Juárez Graciela
Published: October 2021

The objective of the research was to analyze the civic culture of students in intercultural universities, through their attitude toward situations emblematic to assess ways of driving respectful and harmonious in common spaces of coexistence among academics. The frame of reference was critical sociology to address issues of citizenship and civic culture. The research was descriptive and quantitative. A citizenship questionnaire was designed and applied to a total of 228 students in intercultural universities from three regions of the country. The results were processed in SPSS and obtained descriptive statistics for each considered situation. The findings show variations in each condition according to the level of involvement perceived by participants in the situation. As the participant was perceived to be directly involved in the hypothetical situation, its civic attitude moved away from more civic conduct and even expressed willingness to incur fouls to get rid of them. In the situation in which the participant is perceived less involved or disrupted by the dilemma posed, civic responses had the highest frequencies and there was less variability in responses. It is concluded that civic culture is influenced by historical, social and cultural variables that make up the subjectivity of the subjects, and deserve to be studied.
La responsabilidad
Authors: Hernández Ventura Joel
Published: October 2021

The intention of this paper is to provide some sense of coordinates on the place of social responsibility in the field of higher education. The purpose is to consider the importance that currently owns the issue of social responsibility in educational institutions of higher education in a context of complex societies. In this sense, the paper attempts to analyze the place today social responsibility as a relatively emerging issue in the field of education, and particularly on the relevance of insisting on joining the field of higher education as a subject with a substantive value. And this leads us to consider the importance of social responsibility as a component of the University in the context of globalization. At the end, some comments as conclusions are offered.
Modelo educativo alternativo
Authors: González Paredes Elsa , Vera Hernández Gumersindo
Published: October 2021

Faced with an increasingly differentiated and crisis of values in society, how could education contribute to the construction of a project of common life where difference is respected and freedom?, how can be a tool for training in making decisions? And how the principle of equality and fairness? These reflections invite us to address the educational phenomenon from the perspective of philosophy and the question of Being (Heidegger, 2000, Sartre, 2006), to inter- Being is only possible in formation through the eyes of others and their recognition. The purpose of this discussion is to provide the philosophical basis for the realization of an alternative education model for building a meaningful education that outlines the training guidelines of the free citizen as the core of the new political society from the philosophy of recognition.
Violencia en la escuela
Authors: Ramírez Benítez Mercedes Araceli
Published: October 2021

Violence as the central category of this work is accompanied by three others: conflict, inequality and equality. Categories that are impossible to include in all its dimensions, and separately, in this sense the school becomes a dam that allows us to define the space of analysis and provides us with the possibility of some joint with the sociopolitical, economic and cultural in our country. We started by trying to explain each of these categories separately, so a second time we can articulate them and analyze how manifested in the everyday life of the school and how affect subjects that develop different practices in this institution. Likewise, pose some institutional strategies that are taken to attack the problem of school violence.
El trabajo colegiado: individualidades, resistencias y contextos
Authors: Silva Becerra Florentino
Published: October 2021

In this paper subjectivities and patterns of organization a reality next addressed, from the collegiate spaces through the Technical Council School, where are strengthened: values, norms and forms of social control exercised by the dominant group, manifested in resistance and partnerships that aim to power. Central problem posed as meaning that teachers and administrators give the referee work in the Technical School Board, having as its goal the meaning of interactions, to drive collegiate spaces to new educational trends. Using ethnography as method, participating in school dynamics show a theoretical setting by selecting subjects that will provide data to successively proceed to the next group of informants and make the comparison. The results are nutrients for the Student Body, waiting as they impact school, to understand these contexts “in situ”.
Reflexiones de inclusión educativa: un estudio con familias de retorno
Authors: Pasallo Zepeda María de Jesús , Méndez Puga Ana María
Published: October 2021

The difficult economic situation that cross Mexican families, the consequences of anti-immigrant policies and the economic crisis in the United States have caused changes in migratory patterns. The gradual increase, during the last years of returnees, is linked to the increase of groups of people interested in the education of their children. This article seeks to create axes of analysis and reflection to promote the school inclusion of migrant children’s return, the same that are derived from the qualitative study, from the perspective of Ethnography in which they worked with fifteen return migrant children, ten parents and eighteen professors. The results show that returning children, across borders, are generating knowledge that enable them to join the here and there, but school is not aware of this, so that is intended to show some reflections generated by this dynamic.
Dimensión educativa en procesos rituales de comunidades indígenas
Authors: Ornelas Tavares Gloria Evangelina
Published: October 2021

This paper summarizes progress in the research project on Education and Ritualism among Indigenous Peoples, approved and financed for 2016-2018 by the Diversity and Interculturality Academic Area of the National University of Education Sciences (UPN)-Ajusco campus. The purpose is to study diversity from a perspective of intercultural and education, arguing conceptually and methodologically the importance of the Mesoamerican world view in research into the educational process immersed in rituals into which members of indigenous communities participate. One of the two contexts under study is Mixe indigenous family-community education. The other context is classroom education for itinerant Nahua and Otomi children in a town of original peoples in the south of the Valley of Mexico, specifically in a school for 9-14 year olds in the Xochimilco district. Both investigations are advancing in their empirical referents and conceptual analyses. The first piece of research is carried out by Blanca Zitlali López Martínez on the topics of identity, culture, and education implemented via a family-community ritual. The second project by Tahnee Nemo Ramírez problematizes aspects related with the political socialization of children under itinerant situation of over age in the urban educational space, within other aspects.
Diversidad cultural y estilos cognitivos
Authors: Bensasson Laura
Published: October 2021

Speech and thought have a single organic substrate: the cerebral hemispheres, which are responsible for processing the information received through the senses and give it meaning based on the culture and the language we use to put it into words. But this information is not processed in the same way in all cultures and with different languages. What impact can have an educational model that aims to be universal in children with different cognitive models? Is that an education Westernized and Universalist is suitable for all type of culture and of language?
Formar maestros desde el devenir conceptual de la pedagogía
Authors: Saavedra Rey Liliana , Saavedra Rey Sneider
Published: October 2021

Ignorance of history and the theoretical debate that you have configured the pedagogical and educational fields have enabled the uncritical inclusion of speeches related to competence, quality and curricular theories of economists bias in the training of teachers and researchers. Such concepts are future “performance indicators” of teachers forming today in programs of undergraduate and master’s degree in education within the framework of an educational system attended from a technical rationality. This paper examines the key moments of this historical development in the West: paideia Greek and Christian, teaching as teaching of the modern school since the 16TH century; and education, formation (bildung), or curriculum between the 18TH and 19TH centuries since European educational traditions. This analysis, arises as an alternative for training of teachers and researchers which deepens the pedagogical and educational fields in order to develop critical judgment