bluuebunny/crossref_metadata_2025 huggingface dataset:
DESEMPENHO AGRONÔMICO DE VARIEDADES DE FEIJÃO-CAUPI NO PERÍODO DE ESTIAGEM EM CASTANHAL-PA
Authors: Lucas Fernando da Costa Lima , Breno Barbosa dos Santos , Gabriel Garreto dos Santos , Domingos Sávio Morais Tavares , Juliana Simões Nobre Gama
Published: July 2021

O estudo da época de plantio do feijão-caupi tem grande importância para a sua produção, visto que, ele é bastante sensível à precipitação, temperatura, chuvas irregulares e mal distribuídas, juntamente com o período de estiagem, causam danos enormes às lavouras. Desse modo, este trabalho teve como objetivo avaliar o desempenho de variedades de feijão-caupi (Vigna unguiculata L.) no período de estação seca, assim como, fazer um resgate das sementes crioulas produzidas no nordeste paraense. O experimento foi realizado em campo localizado no Instituto Federal de Educação, Ciência e Tecnologia do Pará, campus Castanhal, conduzido de setembro a novembro de 2018. Foram utilizadas 4 variedades de feijão-caupi, sendo elas: BRS Novaera (conhecido como caupi branco), caupi vermelho (conhecido como mata fome) e caupi verde (conhecido como sempre verde), sendo todas encontradas em cidades pertencentes à região nordeste paraense, como Marapanim, Santa Maria do Pará, Irituia e Castanhal. O experimento foi conduzido em blocos casualizados com área de 9x5 m cada bloco, divididos em 4 parcelas de 4x2 m, respeitando o espaçamento de 1 metro entre parcelas dentro do bloco. As plantas foram observadas durante um período de 60 dias a partir da semeadura, sendo as variáveis de crescimento analisadas, diâmetro do caule, altura das plantas e massa seca da parte aérea, avaliados a cada 12 dias. Após a colheita foram avaliadas as variáveis de rendimento: número de vagens por planta, comprimento das vagens, número de sementes por vagem e peso de 100 sementes. Os dados obtidos foram submetidos a análise de variância e as médias comparadas pelo teste Tukey a 5% de probabilidade. Para os períodos de avaliação, foi realizada uma análise de regressão polinomial. As variedades de feijão-caupi BRS Novaera, seguida da “sempre verde” e “mata fome” apresentam desempenho satisfatório no período de estiagem, sendo uma opção para o agricultor poder cultivar mais uma safra de feijão durante o ano. A variedade “mata fome” pode ser uma alternativa para adubação verde e recuperação de solos degradados, devido a produção expressiva de matéria seca e cobertura verde no solo.
Measuring the Attitude of Pre-Service Teachers towards the use of Computer in Mathematics at University Level
Authors: Mangi Sehar , Nandwani Shazma , Rind Amjad Ali
Published: July 2021

Integration of computers in teaching-learning has been a positive development in the field of education. However, there is a dire need of knowing the use of computers in teaching. Therefore, it is necessary to study the attitude of pre-service teachers related to the use of computers in instructional practices of Mathematics. The current study aims to explore the attitudes of pre-service teachers towards the use of computer in teaching Mathematics. A quantitative approach was used within it descriptive cross-sectional survey research design was adopted. The sample of present the study consists of (n=111) pre-service teachers of teacher training colleges. The reliability of the study was found as Cronbach α=.778. The results revealed that the pre-service teachers have an encouraging attitude towards the usage of computer in Mathematics. Overall, attitudes of pre-service teachers were supporting the idea of technological integration in Mathematic.
Gender based Analysis of Psychological Well-Being among University Teachers
Authors: Nazir Nadia , Zamir Shazia , Bibi Aisha
Published: July 2021

The aim of this study was to analyze the gender-based difference in psychological well-being among university teachers-a quantitative study with a population of 192 university teachers from four universities of Islamabad. A random sample technique was used, and 130 university teachers were chosen as a sample of the study. A standardized questionnaire developed by Ryff (2014) consisted of six dimensions, and 42 items were used. The findings of the study revealed that there was a significant difference between "autonomy, environmental mastery, purpose in life, positive relations and self-acceptance" but not in "personal growth". It is also revealed that men scored high in all scopes of psychological well-being except in the "personal growth" of university teachers. It may be recommended that by taking care of psychological well-being, educational institutions may reduce the problems of faculty members, which may lead intuitions towards success.
New Continuum of High Volatile Currency Spillover During EU-BREXIT
Authors: Satti Javed , Abbas Zaheer
Published: July 2021

In this study, the researchers observed the impact of Brexit on the Pound and its spillover to other European countries, likely to be affected during that period. The intraday high-frequency hourly return data of chief monies as Great Britain Pound (GBP), Euro (EUR), Danish Krone (DDK), Hungarian Forint (HUF), Turkish Lira (TRY), Swiss Franc (CHF), Swedish Krona (SEK), and Polish Zloty (PLN), for two months and one day, was utilized. The Intraday volatility spillover index approach and a further rolling window technique applied. The analysis of high-frequency data revealed that four currency pairs as TRY/USD, DKK/USD, PLN/USD, and HUF/USD, are highly volatile currencies. However, three pair currencies as GBP/USD, EUR/USD, and SEK/USD, are comparatively lesser volatile. The results and managerial implications reflect preparedness dynamics and proactiveness for a new continuum project that regional transmission effects of volatility spread from one currency to other currencies in the EU during Brexit.
Pneumothorax in a Preterm Neonate: A Case Report
Authors: Phuyal Rajan , Basnet Ritika , Sapkota Abhin , Gautam Uttara , Chikanbanjar Vijay Kumar
Published: July 2021

A pneumothorax is an abnormal collection of air in the pleural space between the lung and chest wall. Although this condition commonly occurs in adults, it can also present as complication in neonates requiring assisted ventilation and has high morbidity and mortality. Chest tube placement and needle drainage are some common approaches in management. A late preterm infant born at 35+2 weeks of gestation was admitted in Neonatal Intensive Care Unit for the management of respiratory distress. He was kept on mechanical Continuous Positive Airway Pressure owing to worsening respiratory distress. Chest X-ray revealed pneumothorax that was successfully managed with venous catheter drainage on second intercostal space with underwater seal. He was discharge on 10th day of Neonatal Intensive Care Unit admission with stable vitals and normal breathing pattern.
Pharmacological Treatment for the Management of COVID 19: A Narrative Review
Authors: Dhakal Neelam , Poudyal Anil , Gyanwali Pradip
Published: July 2021

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections is alarming worldwide incurring tremendous loss of life and possession. Individuals are facing a terrible pandemic condition in the absence of appropriate medicines and vaccines to combat SARS-CoV-2 infection. This review aimed to provide details on potential treatment steps that can be taken in the current pandemic-fighting situation in Nepal. A massive review was performed including 60 articles from the relevant field. Preliminary results on the efficacy of some existing anti-viral agents were found, however, promising data on effective treatment regimen for COVID 19 are yet to be obtained. This review examines various drugs and their mechanism of actions which are currently used in clinical trials or may be used to treat COVID-19 in the near future.
Anatomical Positions of Superior Parathyroid Gland with regard to the Zuckerkandl Tubercle in Patients Undergoing Thyroidectomy in a Tertiary Care Centre: A Descriptive Cross-sectional Study
Authors: Regmi Deepak , Baidhya Rachana , Rajak Ashik , Mahato Nain Bahadur , Shrestha Sangita , Bista Meera
Published: July 2021

Introduction: Zuckerkandl tubercle is a prominent anatomical structure of the thyroid lobe. Identification and preservation of recurrent laryngeal nerve and parathyroid glands during thyroid surgery can be made easier through assessment of their relationship with the Zuckerkandl tubercle. This study aims to determine the anatomical relationship between Zuckerkandl tubercle and superior parathyroid in patients who underwent thyroidectomy in a tertiary care center.

Methods: This descriptive cross-sectional study was conducted at a tertiary care hospital of Nepal following ethical clearance from the Institutional Review Committee (Reference no: 0106201804) among patients who underwent thyroid surgery between July 2018 to February 2020. Convenience sampling was used for collecting data and was entered in Statistical Package for the Social Sciences version 20. Point estimate at 95% confidence interval was calculated along with frequency andproportion for binary data.

Results: Out of 59 cases, 27 (96.4%) of superior parathyroid on the left were at the 1-2 oâ€™clock position, and 28 (90.3%) of superior parathyroid on the right were at 10-11 oâ€™clock position. On the left side, the superior parathyroid was adhered to Zuckerkandl tubercle in 10 (35.7%), was within 5 mm in 16 (57.1%), and was >5 mm away from Zuckerkandl tubercle in 2 (7.14%). On the right side, the superior parathyroid was adhered to Zuckerkandl tubercle in 12 (38.7%), was within 5 mm in 13 (41.93%), and was >5 mm away from Zuckerkandl tubercle in 6 (19.3%).

Conclusions: Zuckerkandl tubercle has a consistent relationship with the superior parathyroid and can be used as an important landmark for identifying superior parathyroid during thyroid surgery.
Self-medication in Primary Dysmenorrhea among Medical and Nursing Undergraduate Students of a Tertiary Care Hospital: A Descriptive Cross-sectional Study
Authors: Prabha Bharati Jyoti , Ulak Sanjay , Vaidya Shrestha Merina , Mani Dixit Sanjay , Acharya Anna , Bhattarai Ashish
Published: July 2021

Introduction: Primary dysmenorrhea is one of the most common gynecological problems among adolescent females. It is defined as painful menses in women with normal pelvic anatomy, usually beginning during adolescence. This study aims to find out prevalence of self-medication practice in primary dysmenorrhea among medical and nursing undergraduate students.
Methods: A descriptive cross-sectional study was conducted in a tertiary care hospital from November 2020 to March 2021 after taking ethical approval from the Institutional Review Committee. Convenient sampling technique was used. A total of 269 female medical and nursing students with complaints of dysmenorrhea were enrolled and the remedial methods used by them such as self-medication, medical advice and home remedies for dysmenorrhea were asked using an online questionnaire delivered to participants. Data analysis was done in the Statistical Package of Social Sciences. Point estimate at 95% Confidence Interval was calculated along with frequency and proportion for binary data.
Results: Self-medication practice for dysmenorrhea was reported in 175 (65%) of students. The prevalence of mild or moderate pain was commonly present in age group 21-25 years. commonly used for self-medication was mefenamic acid 121 (48%), followed by ibuprofen 51 (20.3%) and paracetamol 41 (16.3%).
Conclusions: Self- medication practice among medical and nursing undergraduate students is high despite awareness of adverse effects.
Investigation of Preeschool Teachers' Questions' Types
Authors: DEMİR Kübra
Published: July 2021

This study is a discourse analysis in the context of early childhood education. The main purpose of the study was to detect the preschool teacher’s questioning typologies in the classroom. To put it differently, discourse-cognition relations were plumbed in the context of learning and teaching in the period of early childhood. The participants were a preschool teacher and 15 students. As part of this study, the teacher’s questioning typologies during in-class discourses were determined. The subjects of the in-class discourses which were video recorded were specified beforehand. The data were analysed theory-based and data-tendency coding catalogues. The data which obtained by recorder were analysed analytically thorough specific coding catalogues (in seconds or minutes). Then the teacher’s questioning typologies were proportioned so as to make inter-implementation comparisons. The teacher applied to seven higher categories of questioning: “communicating”, “monitoring”, “evaluating”, “challenging”, “seeking for evidence”, observations-comparison- prompting to prediction”, “prompting to concluding/ inferencing”. It is determined that communicative questioning (%46,6) typology was used more than the other ones (“challenging” (%6,1, evaluating (%7,9) that required high cognitive demand. From this point of view, the teacher’s questioning in class was mostly lower-level (comprehension, remembering). It is aimed that the obtained evidence of teacher’s questioning will contribute significantly to the vocational education actions.
Activity of purine nucleotide catabolic enzymes in the liver of rats under conditions of nutritional imbalance
Authors: Voloshchuk Oksana , Kopylchuk Halyna , Plytus Andriana
Published: July 2021

The aim of the study was to investigate the activity of purine nucleotide catabolism enzymes, in particular, AMP-deaminase, 5'-nucleotidase, guanosine deaminase, and guanosine phosphorylase and xanthine oxidase in the cytosolic fraction of the liver of rats under conditions of different dietary supply of sucrose and dietary proteins. Enzyme activity was determined by photo colorimetric method: AMP-deaminase activity by the amount of ammonia formed by deamination of AMP, which has a maximum absorption at λ-540 nm and 5'-nucleotidase activity by the amount of Pn formed by hydrolysis of AMP at λ-8. The activity of guanosine phosphorylase, guanosine deaminase and xanthine oxidase was determined by spectrophotometric method. The results of studies have shown that due to consuming a high-sucrose diet in on the background of protein deficiency, the activation of purine nucleotide catabolism is observed and it can lead to disruption of the regulation of energy-dependent processes in liver cells. A critical factor influencing on the state of the purine nucleotide system and the activity of enzymes of their catabolism is alimentary protein deficiency.
Formation of the secondary species range of the invasive mollusk Arion lusitanicus sensu lato in Chernivtsi Region
Authors: Moskalyk Halyna , Khlus Larysa , Cherlinka Vasyl , Kovalska Mariia , Tymchuk Kateryna , Fedoriak Mariia
Published: July 2021

Invasions of species into ecosystems lead to their transformation and in some cases to degradation. The spanish slug Arion lusitanicus Mabille, 1868 (Mollusca: Gastropoda: Stylommatophora: Arionidae) has been spread actively in Europe including some regions of Ukraine recently. This is a dangerous invasive species that causes significant damage to natural and agroecosystems. There is a lack of nformation on the distribution of the species in Chernivtsi region. Therefore, the aim of the work was to assess the current distribution and allocation of the boundaries of the secondary range of Arion lusitanicus sensu lato in Chernivtsi Region. Data on the spread of A. lusitanicus in the region have been obtained from the website of the National Biodiversity Information Network UkrBIN, as well as collected in the field during 2016-2019 and by surveying residents of settlements of Chernivtsi region. Estimation of A. lusitanicus populations density in selected localities has been performed applying the method of total collection and direct in situ calculation with parallel estimation of habitat area. The mapping method in Quantum GIS was used to present the cartographic material. As a result, it has been found that A. lusitanicus was recorded for the first time from Chernivtsi region in 2011–2012 in the city of Chernivtsi (Rosha district) and in the Novoselytsia district. The uneven spatial distribution of A. lusitanicus mollusk colonies on the territory of Chernivtsi region has been shown: the maximum number of localities within urban settlements and the absence of species on alpine and certain steppe territories. It has been noted that the boundaries A. lusitanicus range in Chernivtsi region are confined to the territory with an altitude of 350 m above sea level and are transitive, indicating the active spreading of the species.
Taxonomic structure of the coastal fouling community formed by the Black Sea mussel Mytilus galloprovincialis
Authors: Varigin Aleksandr
Published: July 2021

Peculiarities of the taxonomic structure of the coastal fouling community formed by the bivalve mollusk Mytilus galloprovincialis Lamarck, 1819 on the underwater surface of solid substrates located in the Odessa Bay of the Black Sea have been revealed. The qualitative composition, degree of occurrence, size characteristics and features of quantitative development of invertebrates of this community were determined. As part of the fouling community, 65 species of invertebrates belonging to 61 genera, 47 families, 22 orders, 10 classes and 6 types were identified. It was found that among the large taxa of the community Cnidaria, Annelida, Bryozoa, Arthropoda, Mollusca, Chordata, the most numerous species was the Arthropod type. Annelida and Mollusca accounted for one-fifth and one-fourth of all species. The other three types of invertebrates were represented by one or two species. A characteristic feature of the taxonomic structure of the community was that in most cases, each identified genus was represented by only one species, which in specific conditions was the most environmentally plastic representative of it. It is shown that the species structure of the fouling community was characterized by evident dominance of its edificator M. galloprovincialis. The maximum abundance of this species in the community was 11960 sp.·m-2, and biomass – 10328,6 g·m-2. In addition, 12 other invertebrates with 100 % occurrence were key-species of the community. These species, together with those with occurrence of more than 75 %, belonged to the characteristic species of the community. A total of 22 such species were identified. Among other invertebrates, 5 species (P = 50–75 %) were permanent, 8 species (P = 25–50 %) were rare, and 30 species (P <25 %) were random. The most of the organisms in the coastal fouling community of the Odessa Bay are eurybiont species was established. The presence in the fouling community invasive species of bivalve mollusks Arcuatula senhousia (Benson, 1842), which is systematically very close to the Black Sea mussel Mytilus galloprovincialis, was revealed. Due to its opportunistic properties, this mollusk poses a certain threat to the existence of settlements of aboriginal species of bivalve mollusks. The coastal fouling community formed by the Black Sea mussel has a certain degree of stability, as the same species of invertebrates remain characteristic of its taxonomic structure for 40 years.
Diagnosis of eluvial-illuvial profile differentiation processes in Pre-Carpathian soils
Authors: Smaga Ivan
Published: July 2021

Elementary soil processes, as components of the soil-forming process, play an important role in the formation of morphological and genetic features of soils and are used for their genetic diagnosis. Eluvial-illuvial differentiation of the background profile for Precarpathian soils is due to the passage of processes from the group of eluvial, in particular podzolization, silting and gley-eluvial. The diagnostic criteria for these processes remain controversial and need further development. The article provides some justifications for their objectivity and reliability in identifying individual processes of soil formation and the results of establishing the genetic consequences of their passage. The formation of clay cutanes in the illuvion is considered to be an important sign of lessivage, but the presence of one and a half oxides may also indicate the passage of the processes of podzolization and in-soil clay forming According to another criterion - the presence of "optically oriented clays" in the illuvion is difficult to establish their migration path and the intensity of the lessivage process. Increasing the value of the ratio of silt content to the content of physical clay in the illuvial horizons compared to the eluvial horizons does not allow to distinguish the processes of podzolization and lessivage, and the same ratio in the illuvial horizon compared to the parent rock - lessivage and clay forming. Changes within the profile of the mineral part of the soil, which are reflected by the molecular ratios of SiO2:Al2O3 and eluvial-accumulative coefficients of aluminum, the values of silt and aluminum losses, also the profile distribution of montmorillonite are important criteria for the separation of loess and podzolization and indicate the decisive role of the latter in the formation of the profile differentiation of the soils of Precarpathians. Important criteria for gley-eluvial processes are higher losses from the upper podzolic illuminated of Fe2O3 layer than Al2O3, an increase in the molecular ratio of Al2O3:Fe2O3, the ratio of losses of Fe2O3 and Al2O3, also increase the criterion SiO2:Fe2O3/SiO2. Complementing the national system of parameters for the diagnosis and classification of soils with criteria that are characteristic of the substantive-genetic approach according to the WRB requires further study.
Palynomorphological peculiarities of species Hypericum L. (Hypericaceae) of the flora of Ukraine
Authors: Minarchenko V , Futorna O , Tymchenko I , Dvirna T
Published: July 2021

The palinomorphological features of six species of the genus Hypericum (H. аlpigenum, H. elegans, H. hirsutum, H. maculatum, H. montanum, H. perforatum) of the flora of Ukraine have been investigated. All species studied are valuable medicinal plants. However, only two species of raw material are officially permitted: H. perforatum and H. maculatum. Raw materials of other species can also be harvested from natural habitats, as they are wide spread in some regions of Ukraine and morphologically similar to pharmacopoeial species, but their admixture to the raw materials reduces its quality. The aim of research was to make a comparative morphological analysis of pollen grains six species of genus Hypericum of Ukrainian flora for determine the common and distinctive features that will identify the species of raw materials. We used a scanning electron microscope to investigate the pollen grains ultrascultures (CEM, JSM 6060 LA). The studies were performed according to the standard method. As a result of palynomorphological studies of six species of the genus Hypericum of the flora of Ukraine established, that the pollen grains of the species studied are small-sized, 3-colporate, ellipsoidal or spheroidal, outline in polar view ‒ trilobate, rounded-triangular, in equatorial elliptical. In all studied species the colpi are long, mostly with distinct margins, pointed ends and a granular membrane. The pores are undistinct. Sculpture exine in the investigated species of the genus Hypericum of the flora of Ukraine are microreticulate (H. perforatum, H. alpigenum) and reticulate (all other species studied). Morphometric features of pollen grains of the studied species: the length of the polar axis, equatorial diameter, colpus width, mesocolpium width, the diameter of the apocolpium, the ratio of the length of the polar axis to the equatorial diameter, the ratio of the mesocolpium widths and aperture widths can be used as additional diagnostic features in identification species of the genus Hypericum of Ukrainian flora.
Іnfluence of multicomponent growth regulators on winter resistance forming and productivity of winter wheat.
Authors: Yarchuk I. I. , Melnyk T. V. , Morhun O. V.
Published: July 2021

The growth of gross grain may be obtained only with growth of agrotechnical methods. Therefore there is a need for further investigation of the complex influence of the main technical means on plant growth and development. It is necessary to define an influence of multicomponent drugs on the wheat win- ter resistance and productivity. To solve this task, field investigations were held for conditions of northern Steppe aiming to define regularities of growth and development, winter resistance forming, and productivity of the hard winter wheat depending on growth regulating drugs, different levels of mineral nutrition, and different predecessors. The investigation (2013–2017) was held on the training field “Samarskiy” of Dneprovskiy National Agrarian-economical University (Dnipropetrovsk oblast) on common chernozem soil with low contains of humus medium loam. The square of the field 30 sq. m., three times frequency, allocation is systematic. In general, the weather conditions for years of the investigation were specific for the Steppe zone. It was defined that depending on the presence of the main factors of life sustenance, the influence of studied drugs (which contain different organic and non-organic elements) varies a lot but there are some regularities. At the worst conditions (after a stubble predecessor and with low level of nutrition) the drugs have shown minimal influence on wintering of the hard winter wheat. So, the maximum increase of nutrition the drugs can give (drugs “Mars ELBi” and “AKM”) only at 2.6 % higher than at the control, which is not so significant. Minor increase or even decrease of wintering caused by usage of the studied drugs was noticed also at the best background (fallow land, N30Р60K40). The best cryoprotection was obtained with the drug “Vympel”, which increased the plant survival at 8.6 % comparing with the control. The same regularities of the influence of complex drugs depending on the background are found at the productivity forming as well. At follow land in conditions of sufficient nutrition the effect of the most studied drugs hasn’t increased or was insignificant. Chlormequat-chloride 750, as opposed to multicomponent drugs, has shown consistent and positive effect in conditions of high background. Among studied drugs the best sustainability in increasing grain productivity of the hard winter wheat has shown drug “Mars ELBi” used in spring after the vegetation renewal (daily-average temperature +10 оС) with norm 750 ml per ha. Key words: hard winter wheat, growth regulator, winter resistance, productivity, grain quality, cost efficiency.
Dynamics of soil fertility parameters in the Zaporizhzhya region and the ways of its restoration
Authors: Romanenko O. L. , Kushch I. S. , Agafonova A. V. , Tenyukh Yu. O. , Solodushko M. M. , Usova N. M.
Published: July 2021

During 2000–2018, the results of the application of organic and mineral fertilizers in dynamics and their effect on the content of humus and nutrients in the soils of the Zaporizhzhya region were reviewed. To control the state of soil fertility use the calculation of the balance of humus and nutrients. This makes it possible to determine the extent to which the application of nutrients with fertilizers covers their removal by crop yields. Negative tendencies have been identified, which have led to the deterioration of soil fertility in the Zaporizhia region. Measures are proposed to achieve a deficit-free balance of humus and nutrients. On average, in 2000–2018, the level of mineral fertilizer application in the Zaporizhia region remained low – 38 kg/ha (nitrogen – 28 kg, phosphorus – 7, potassium – 3 kg), and manure – only 0.2 t/ha. According to the results of agrochemical certification of agricultural lands, the dynamics of changes in the content of humus, easily hydrolyzed nitrogen, mobile compounds of phosphorus and potassium over the past 18 years has been determined. The average weighted content of humus in the soils in the VIII round was 3.44 %, IX – 3.52, X – 3.40, XI (2016–2018) – 3.57 %, which indicates the stability of this indicator. The weighted average nitrogen content, which is easily hydrolyzed during all rounds, has close values (83.6–90.3 mg/kg) and corresponds to a low level of its supply. The content of mobile phosphorus compounds during the VIII – IX rounds was quite stable (97.1–101.6 mg/kg), and in the X–XI rounds there was even an increase to 123.3–123.4 mg/kg. The phosphorus regime of soils is stable and corresponds to the increased level of security, except for the ninth round (average). Potassium regime of the soil for eighteen years also remains stable and refers to a high level of security (159.6–176.8 mg/kg). The balance of humus and nutrients in the soils of the region remains negative. There is a tendency of positive changes if we compare the results for the first (2003–2014) and second (2003–2018) periods. Thus, to achieve a positive balance of humus it is necessary to apply 2 t/ha of straw (+400 kg/ha), 20 kg/ha of nitrogen fertilizers and 6.4 t/ha of manure, and in 2003–2018 – respectively 2 t / ha straw (+400 kg/ha), 20 kg/ha of nitrogen, 5.8 t/ha of manure. Key words: soil, balance, dynamics, humus, fertility, organic and mineral fertilizers.
The effectiveness of applying herbicides incorn growing technology
Authors: Sudak V. M. , Horbatenko А. І. , Matiukha V. L. , Kulyk А. О.
Published: July 2021

Studies conducted on the chernozems of the steppe zone of Ukraine have revealed a direct relationship between thephytosanitary condition of an agricultural ecosystem and the amount of productive moisture used by corn plants from the 0 to 150 cmsoil layer during the period from sowing to harvest. In absolutely cleancrops, corn plants used soil water to the 156 mm depth, while in the plotsfrom which the weeds were not removedsoil water was used to 203 mm and on theherbicide-treated soilto 168–171 mm depth. Full or partial control of weediness of crops makes it possible to save 320–470 m3/ha moisture reserves, which is equal to the average monthly precipitation that fell during the growing season (2018–2019). Effectiveness of the tested crop chemical protection systems was to a large extend determined by the hydrothermal conditions in April - May. High air temperature, lack of agronomically useful rains and dry winds caused drying out of the upper soil layer and decreasedphytotoxicity of pre-emergence herbicides. In this case (2018), the largest percentage of the first wave weeds (89.1 %) was destroyed by a tank mixture of crop protectionagents contained in Frontier Optima (0.8 l/ha + Stellar (0.8 l/ha) + Metolat (0.8 l/ha). In favorable weather, to ensure manifestation of toxicological properties of soil herbicides (2019), the following combined technological schemes for harmful species control in the first stages of corn organogenesis had an advantage: Dual Gold (1.5 l/ha) (before sowing), Stellar (1.25 l/ha) + Metolat (1.25 l/ha) (after emergence of seedlings) and Acris(3 l/ha) (before sowing), Kelvin Plus (0.35 kg/ha) + Hasten (1 l/ha) (after emergence of seedlings). The technical efficiency of the herbicide application reached 98–100 %. In 2018, the highest yield of corn grain (7.85 t/ha) in the protected plots was obtained after application (in the phase of development of 3–5 corn leaves) of the following tank mixture: Frontier Optima (0.8 l/ha) + Stellar (0.8 l/ha) + Metolat (0.8 l/ha). This combination turned out to be the most effective in terms of cost effectiveness of grain production, providing a profitability of 213 %. In 2019, we managed to increase the yields by combining soil and crop protection herbicides. Given the cost and consumption rate of the herbicides used per 1 ha, a combination of synthetic agrochemicals Avatar (2.5 l/ha) (before sowing) + Prima (0.5 l/ha) (after emergence of seedlings) was the best in terms of the main product cost (1579 UAH/t) and profitability (134 %). Key words: weeds, herbicidal system, technical efficiency, productivity, profitability of production.
Influence of basalt fiber on tribological properties of secondary polyethylene terephthalate
Authors:   Dniprovsk State Technical University, Tomina A.-M. , Yerоmenko A. ,   Dniprovsk State Technical University, Makarov V. ,   Dniprovsk State Technical University
Published: July 2021

The article considers the influence of discrete (3 mm) basalt fiber on the tribological properties of secondary agglomerated polyethylene terephthalate. It was found that the introduction of the filler reduces the coefficient of friction and the intensity of linear wear of the initial polymer 1,5 and 4,5 times, respectively, reaching the minimum values at a basalt fiber content of 5 mass.%. The obtained results are due to the fact that the appearance of basalt fiber strengthens the polymer matrix that confirms the increase in hardness by 15%, and inhibits the development of cracks on the surface of the composite. The study of the temperature in the contact zone showed its increase that is due to the low thermal conductivity of the filler (0,064 - 0,096); as a result, there is an accumulation of heat in the friction zone. Further increase in fiber content (up to 10 mass.%) leads to a sharp deterioration of the tribological and physico-mechanical properties of basaltoplastics because of the increase in the defect of the material. It is determined that the effective content of filler in the polymer matrix is 5 mass.%. As a result, this composite was recommended for the manufacture of parts for movable joints of agricultural, automotive and metallurgical equipment.
ANALISIS KEPUTUSAN PEMBELIAN KONSUMEN DITINJAU DARI PROMOSI DAN HARGA PADA BERAS ORGANIK CV BERKAH MAJU MAKMUR TANGERANG SELATAN
Authors: Kurniawaty Erlita
Published: July 2021

Tujuan diadakan penelitian ini untuk menganalisis keputusan pembelian yang dipengaruhi oleh  promosi & harga baik secara sebagian dan keseluruhan yang bertempat di CV. Berkah Maju Makmur Kota Tangerang Selatan dengan waktu penelitian dilakukan dari  bulan Juli - Desember 2020.Metode penelitian yang dipilih adalah deskriptif kuantitatif dan yang dijadikan populasi adalah konsumen yang sudah mengkonsumsi beras Organik di CV. Berkah Maju Makmur dengan jumlah populasi sebanyak 1115 orang dan sample dengan total 92 orang  dengan teknik pengambilan sampel secara insidental. Sumber data primer dari penyebaran angket/kuesioner dan uji data yang dipakai adalah analisis pengaruh, analisis hubungan, analisis regresi dan determinasi.Didapatkan hasil keputusan-pembelian dipengaruhioleh variable promosi dan harga secara sebagian dan keseluruhan  dengan hasil nilai t hitung lebih besar dari t tabel (9,448 > 1,662) dan nilai sig kurang dari 0,1 nilai F hitung lebih besar dari F tabel (45,517 > 2,36).Untuk uji hubungan didapatkan hasil tingkat hubungan yang kuat (0,711) dan uji determinasi menunjukkan hasil bahwa variabel promosi dan harga berkontribusi kepada keputusan pembelian sebesar 49,9% dan sisanya 50,1 % ada variabel lainnya.
KEPUASAN MASYARAKAT DI TINJAU DARIKUALITAS PELAYANAN YANG ADA PADA KANTOR DESA CITAYAM
Authors: Arianto Nurmin , Adam Muhfany Afrido
Published: July 2021

Penelitian ini bertujuan untuk mengetahui pengaruh kualitas pelayanan terhadap kepuasan masyarakat Desa Citayam.Penelitian ini menggunakan metode analisis deskriptif kuantitatif dengan teknik pengambilan data menggunakan angket. Teknik sampling yang digunakan adalah menggunakan rumus slovin dengan sampel sebanyak 99 responden.Analisis data menggunakan uji validitas, uji reliabilitas, uji asumsi klasik, analisis regresi, analisis koefisien korelasi, analisis koefisien determinasi dan uji hipotesis dan uji hipotesis menggunakan program IBM SPSS versi 25.Hasil penelitian ini menunjukan bahwa secara parsial kualitas pelayanan berpengaruh positif dan signifikan terhadap  kepuasan masyarakat,  dibuktikan dengan hasil perhitungan nilai t hitung > t tabel  dengan nilai sebesar 13.469 > 1.98498 dengan taraf signifikansi sebesar 0,000 < 0,05 dengan demikian Ha1 diterima.
RANCANG BANGUN DAN STUDI EKSPERIMEN PEMANAS AIR TENAGA MATAHARI DENGAN REFLEKTOR BUSUR SEPEREMPAT LINGKARAN
Authors: ’Atifah Nailul
Published: July 2021

Abstrak: Penelitian mengenai rancang bangun dan studi eksperimen pemanas air tenaga matahari dengan reflektor busur seperempat lingkaran telah dilaksanakan. Reflektor busur seperempat lingkaran pada penelitian ini memiliki ukuran jari-jari sebesar 60 cm, panjang  60 cm,  terbuat dari potongan cermin dengan lebar  3 cm dan panjang 30 cm. Sistem pemanas air tenaga matahari ini memiliki nilai fraksi radiasi dari reflektor parabola ke pipa absorber sebesar 5,2 %. Pipa absorber terbuat dari pipa besi yang dicat hitam dengan diameter 1,5 inchi. Hasil percobaan menunjukkan bahwa pemanas air tenaga matahari ini dapat memanaskan air sebanyak 684 ml dengan suhu maksimal mencapai 710C pada kondisi cerah dan tidak berangin. Pemanas air tenaga matahari ini menghasilkan nilai energi termal output tertinggi sebesar 98,73 kJ. Energi termal ouput rata-rata pada sistem ini adalah sebesar 55,08 kJ dengan efisiensi termal rata-rata  sebesar  31,64%.Kata kunci : pemanas air tenaga matahari,  busur seperempat lingkaran, reflektor, temperatur, energi termal, efisiensi termal
ANALISIS FATIGUE LIFE STRUKTUR DUDUKAN BOGIE MONORAIL UTM 125 KAPASITAS 24 TON MENGGUNAKAN METODE FINITE ELEMENT
Authors: Awwaluddin Muhammad
Published: July 2021

Abstrak: Struktur dudukan bogie pada monorail UTM 125 dengan kapasitas 24 ton perlu dilakukan analisis fatigue. Analisis fatigue merupakan salah satu metode untuk memperkirakan resiko kegagalan, kerusakan dan usia dari suatu struktur yang diakibatkan oleh beban berulang. Dengan analisis fatigue, resiko kegagalan struktur dapat diperkecil sehingga dapat meminimalkan kerugian yang lebih besar. Analisis fatigue dilakukan menggunakan software finite element mengikuti diagram proses analisis. Pembebanan yang diberikan adalah beban aktual desain, beban akibat angin dan beban pada saat kereta berbelok. Dari analisis fatigue pada struktur bogie tersebut didapatkan hasil yang sudah masuk dalam katagori aman atau high cycle (infinite cycle).Kata kunci : analisis struktur, fatigue Struktur, kerusakan struktur, Monorail
PERLAKUAN TERMOMEKANIK PADUAN TITANIUM HASIL CORAN VACCUM ARC MELTING
Authors: Rokhmanto Fendy
Published: July 2021

Titanium dan paduanya merupakan salah material logam yang tangguh, sehingga banyak diaplikasikan pada aerospace, marine, oil and gas, biomedical, olah raga, otomotif dan lain-lain. Produk Titanium, dapat diperoleh dari beberapa proses manufaktur yaitu casting, machining, forming, dan powder metallurgy. Produk akhir, ingot hasil coran ataupun produk setengah jadi paduan Titanium dapat dimodifikasi sifat mekanisnya dengan proses heat treatment dan thermomechanical treatment. Pada penelitian ini dilakukan investigasi perubahan sifat mekanis dalam hal ini kekerasan dan struktur mikro paduan titanium. Ingot paduan Titanium Ti-Al-Nb dibuat dengan proses remelting logam paduan dalam tungku busur lustrik vakum. Kemudian ingot hasil coran dilakukan proses homogenisasi pada temperatur 1100 °C selama 12 jam dengan pendinginan didalam tungku dan dilanjutkan dengan hot roll dengan pemanasan awal 1100 °C dan waktu tahan 1 jam yang kemudian dilakukan quenching. Karakterisasi paduan dilakukan pada setiap kondisi perlakuan, adapun karakterisasinya adalah pengamatan stuktur mikro menggunakan foto metalografi, SEM dan uji keras dengan metode Rockwell C. Pengamatan metalografi menunjukkan bahwa paduan merupakan alfa-beta Titanium. Proses pengulangan remelting tidak memberikan efek signifikan terhadap peningktan kekerasan paduan. Proses thermomekanikal treatment mengakibatkan perubahan bentuk mikrostruktur dari interdendritic menjadi platelike dan nilai kekerasan menjadi 52 HRc pada 3 kali remelting dan 50.5 HRc pada 5 kali remelting Kata kunci: titanium, vacuum arc melting, termomekanik, pengecoran
SIMULASI PENGUKURAN DIMENSI SLIDER PADA MESIN CETAK PLASTIK MENGGUNAKAN ALAT UKUR COORDINATE MEASURING MACHINE (CMM)
Authors: Nurjaya Nurjaya
Published: July 2021

Mesin cetak (mold) merupakan suatu mesin yang memiliki ruang atau tempat plastic cair panas, yang dinjeksikan dengan mesin injeksi untuk dibentuk menjadi produk plastic tertentu sesuai bentuk ruang. Mesin cetak ini memiliki banyak komponen, salah satunya Slider. Komponen ini berkerja dengan cara maju dan mundur yang digerakan oleh hidrolik. Pada umumnya, komponen ini saat berkerja sering kali mengalami kerusakan, berupa gesekan pada permukaan yang disebabkan dimensi yang tidak sesuai. Untuk menghindari hal tersebut perlu dilakukan pengukuran menggunakan alat ukur tiga dimensi (Coordinat Measuring Machine) yang memiliki ketelitian tinggi. Kata kunci : Slider, Coordinat Measuring Machine, Graphics of element
Predicting Tobacco Use Based on the Theory of Planned Behavior in Adolescent Girls
Authors:   Health Education and Promotion (MS), School of Health, Guilan University of Medical Sciences, Rasht, Iran., Ghasemipour Maryam , Farmanbar Rabiollah ,   Associate Professor, Dept. of Health Education and Promotion, School of Health, Guilan University of Medical Sciences, Rasht, Iran., Kasmaee Parisa ,   Assistant Professor, Dept. of Health Education and Promotion, School of Health, Guilan University of Medical Sciences, Rasht, Iran., Atrkar Roshan Zahra ,   Associate Professor in Biostatistics, Dept. of Biostatistics, School of Medicin, Guilan University of Medical Sciences, Rasht, Iran., Nickandish Sima ,   Midwifery (MSc), School of Nursing and Midwifery, Zanjan University of medical sciences, Zanjan, Iran.
Published: July 2021

Introduction: Tobacco use poses a serious threat to global health. The tobacco epidemic is spreading in low- and middle-income countries, where the tobacco industries mainly target young people and women. Objective: This study aims to determine the predictors of tobacco use based on the theory of planned behavior (TPB) in female high school students. Materials and Methods: This cross-sectional study was conducted on 340 female high school students aged 14-18 years in Rasht City, Iran, who were selected using a multi-stage sampling method. The data collection tool was the TPB questionnaire for tobacco use in Persian. The obtained data were analyzed using the Mann-Whitney U test, Kolmogorov-Smirnov test, Spearman correlation test and logistic regression analysis. Results: The TPB constructs of attitude (OR = 0.91, 95% CI: 0.85-0.97, P = 0.007) and behavioral intention (OR=0.75, 95% CI; 0.64-0.88, P = 0.001) could predict cigarette smoking. Also, constructs of perceived behavioral control (OR = 0.92, 95%CI; 0.87-0.97, P = 0.007), subjective norms (OR = 0.83, 95%CI; 0.70-0.97, P = 0.02), and behavioral intention (OR = 0.88, 95% CI; 0.78 - 0.99, P = 0.03) could predict hookah smoking in girls students. Conclusion: Considering the predictive power of the TPB constructs in tobacco use by adolescent girls, it is possible to plan to reduce its rate in this group by a focus on the TPB constructs.
Effect of Midwife-Led Counseling on the Quality of Life of Women With Body Image Concerns During Postpartum
Authors:   Midwifery (MSc) ،School of Nursing and Midwifery, Alborz University of Medical Sciences، Karaj، Iran., Salehi Sedigheh , Mahmoodi Zohreh ,   Associate Professor, Social Determinants of Health Research Center, Alborz University of Medical Sciences, Karaj, Iran., Jashni Motlagh Alireza ,   Assistant Professor, Neonatal-Perinatal Medicine, Department of Pediatrics, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran., Rahimzadeh Mitra ,   Associate Professor, Social Determinants of Health Research Center, School of Public Health, Alborz University of Medical Sciences, Karaj, Iran., Ataee Mina ,   Assistant Professor of Obstetrics & Gynecology, Alborz University of Medical Science, Karaj, Iran., Esmaelzadeh –Saeieh Sara ,   Associate Professor, Social Determinants of Health Research Center, Alborz University of Medical Sciences, Karaj, Iran.
Published: July 2021

Introduction: During pregnancy and postpartum, women bet more concerned and dissatisfied with their bodies. Primiparous women face more physical and mental health problems in the postpartum period. Objective:This study aimed to investigate the effect of a midwife-based counseling program on the quality of life in women with body image concerns during postpartum. Materials and Methods: This randomized controlled trial was conducted on 64 primiparous women with body image concerns who had been referred to the health centers in Alborz Province, Iran,in January 2019. The convenience sampling method was used for recruiting the study participants. Then, the samples were assigned to the intervention and control groups by random number table allocation. Next, the intervention group received a three-session counseling program.The data gathering questionnaire in this study included a Multi-Dimensional Body Self-Relation Questionnaire (MBSRQ) and a 36-item short-form quality of life questionnaire. Questionnaires were completed before, immediately after, and one month after the intervention.The obtained data were analyzed using descriptive statistics, the Chi-square test, Fisher exact test, and repeated measures test. Results:The mean ±SD age of the study participants was 26.4 ±5.4 years. Also, 94%of the samples had wanted pregnancy, 54%had a vaginal delivery,and 59.4%were overweight. There was no statistically significant difference between the control and intervention groups before the intervention regarding their demographic characteristics. The results of the analysis of variance (ANOVA) with repeated measures test indicated that the length of time affected the total scores of multi-dimensional body self-relation (P= 0.001). Also, the repeated measures ANOVA results showed that time significantly impacted the quality of life score (P= 0.001). Conclusion: The study results showed that a midwife-led counseling program could affect the score of quality of life in women with body image concerns in postpartum.