bluuebunny/crossref_metadata_2025 huggingface dataset:
The psychological and social problems faced by foster family from social workers' perspective: المشكلات الاجتماعية والنفسية التي تواجه الأسر البديلة للفتيات المحتضنات من وجهة نظر الأخصائيات الاجتماعيات دراسة مطبقة على المؤسسات الاجتماعية التابعة لمكتب الإشراف النسائي الاجتماعي بالرياض
Authors: Sarah Ibraihem bin sagar  ,     Mardeyah M.Al- Bardisi
Published: May 2021

This study is considered a quantitative research.The research aims to identify the most prominent psychological and social problems faced by foster family from the social workers' perspective to identify the role of social work in alleviating these problems.The study used the social survey methodology, the study tool was the questionnaire, and the study sample was purposive sample consisted of 31 social works who work with faster family in some social institutions in Riyadh.The main findings of the study include that the study sample agreed that foster families suffering in controlling the foster adolescence with an average (2.39 of 3) and standard deviation 0.615.Also, the sample study agreed that foster families faced difficulty in telling the foster child that he/she is adopted with a mean (2.58 of 3), and standard deviation of 0.502.There is a difference in the degree of approval of the study sample on the most important psychological problems experienced by foster families, where the rates of consent between (1.90 to 2.35).The study sample agree on the important role of social worker can play to reducing the foster families' social and psychological problems with an (2.97 of 3).
Screening of Influenza a (H1N1) Neuraminidase Inhibitor for Kabasura Kudineer, Nilavembu Kudineer and the Novel Formulation JACOM
Authors: MS SHREE DEVI , P SATHIYARAJESWARAN , V Mohanasrinivasan , C SUBATHRADEVI , RS Ramaswamy , Kanakavalli Kadarkarai , DEVI Dr SHREE
Published: May 2021

Due to erratic climate change, vector-borne diseases started flaring up from the second half of the last decade. Siddha medicine has been used as a public health tool to effectively manage chikungunya and dengue in the epidemics that happened in 2008 and 2016. Tamil Nadu government has made enormous efforts to control vector-borne diseases. Due to which morbidity and mortality due to vector borne diseases came down compared with other states. Two official Siddha formulations, namely Kabasura Kudineer Chooranam and Nilavembu Kudineer Chooranam and novel herbal formulation – JACOM, are used to combat vector-borne diseases. These decoctions lack an evidence base as a formulation. Screening has been done to check the efficacy of the formulation in inhibiting neuraminidase. Neuraminidase inhibition assay was performed to determine the activity of Siddha formulations. The Kabasura Kudineer Chooranam, Nilavembu Kudineer Chooranam and JACOM showed excellent inhibitory activity. The Kabasura Kudineer and Nilavembu Kudineer and JACOM aqueous extract showed maximum neuraminidase inhibition of 80.35%, 91.78% and 87.97%, respectively.
Protecting Cisnormative Private and Public Spheres: The Canadian Conservative Denunciation of Transgender Rights
Authors: DeGagne Alexa
Published: May 2021

The public sphere has been seen by conservatives as an arena for safeguarding private relations. Private power relations (in the family, religion, community and economy) could be threatened by newly recognized social groups that make claims on the state for justice and equality. Therefore, conservatives have been concerned about who can speak and exist in public and who can thereby make demands on the state. In the debates over transgender rights in Canada, social conservatives and neoliberal forces have merged in complex and impactful ways. Analyzing House of Commons and Senate debates and committee proceedings for Bill C-279 (2015) and Bill C-16 (2016–2017), I examine three conservative arguments that illustrate attempts to maintain private power relations and hierarchal gendered divisions by ensuring that transgender and gender nonconforming people are not allowed to exist, speak or make claims in public: first, the assertion that gender identity and gender expression are not definable identity categories for claims-making because transgender people are deceptive and can change their gender based on their feelings; second, the targeting of public facilities, and particularly public bathrooms, as sites of contention, danger and necessary gender segregation; and third, the attempt to delegitimize rights claims by criminalizing transgender people in relation to cisgender women and children.
Contagious Terror: Violence, Haunting and the Work of Refugee Protection
Authors: Masoumi Azar
Published: May 2021

This article argues that contrary to its humanitarian semblance, state-controlled refugee protection is a project of substantial violence, and that the violence of refugee protection is continuously disseminated through and across a wide range of unlikely actors and institutions. Drawing on Avery Gordon (2008) and Franz Fanon (1965), I show that the violence of refugee protection makes itself known in its haunting effects on those who come in contact with it in various capacities: those who carry through the work of refugee protection, such as refugee claim decision makers, lawyers and support workers, are plagued by psychological ailments that manifest in periodical burnouts, anxiety, melancholy, alcohol abuse, and unrelenting moral and emotional dilemmas. These ailments reveal the violence of refugee protection not just in relation to refugees, who are often construed as the exclusive subjects of violence, but also towards non-refugees who come into contact with “protection” work.
From Data Ethics to Data Justice in/as Pedagogy (Dispatch)
Authors: Zeffiro Andrea
Published: May 2021

N/A
Elbow joint position and hand pressure force sense under conditions of quick reaction in table tennis players
Authors: Bańkosz Ziemowit , Stefaniak Tadeusz
Published: May 2021

Joint
position sense and force reproduction are the most commonly used measures of
proprioception. It
is interesting to measure proprioception in integration of the factors most
commonly viewed as the most important in table tennis—speed,
in particular quick reaction. The aim of this study was to evaluate the accuracy of replication of a
specific range of motion and force of hand pressing under conditions of limited
time. Forty table tennis players and 30 non-athletes participated in the study.
Electrogoniometric and dynamometric methods were used in the investigation. The
accuracy of replication of pronation and supination movements of the forearm at
the elbow joint and force of hand pressing under conditions of limited time
(performing the activity as fast as possible in response to visual signals)
were measured. The tests performed in the study revealed that both female and
male table tennis players were characterized by a higher level of forearm
position sense during performing the fastest possible pronation and supination
movements in most of the tasks. Better
results of table tennis players than of the control group suggest that joint
position and hand pressure sense integrated with quick reaction are important performance
factors in table tennis. The results also indicate opportunities for using this
methodology to monitor training.
Формування та розвиток системи контролінгу на промислових підприємствах
Authors: Бужимська Катерина Олександрівна , Царук Ірина Михайлівна
Published: May 2021

У статті обґрунтовано необхідність використання в практиці вітчизняних підприємств системи контролінгу. Визначено її характерні складові та запропоновано методичний інструментарій, який дозволить вчасно коригувати розвиток підприємства в процесі його виробничо-господарської діяльності. Формування та розвиток систем та інструментів контролінгу, що включає постійний збір та обробку інформації, яка використовується для прийняття як оперативних, так і стратегічних управлінських рішень, представлено одним із напрямів удосконалення управлінської діяльності на промислових підприємствах.

Уточнено поняття «контролінгу» як основи концепції ефективного управління промисловим підприємством. Представлено авторське визначення контролінгу як функціонально відокремленої сфери економічної роботи на підприємстві, пов’язаної з реалізацією фінансово-економічної коментуючої функції в управлінні для прийняття оперативних і стратегічних рішень. Визначено головну мету впровадження контролінгу на підприємствах, яка полягає у побудові ефективної системи для прийняття, впровадження, контролю та аналізу управлінських рішень на підприємстві. Сформульовано основні постулати сучасної філософії контролінгу через взаємозв’язок напрямів зростання ефективності діяльності підприємства в цілому та його підрозділів. Обґрунтовано характерні особливості концепції контролінгу, серед яких найголовнішою визначено орієнтацію на майбутнє, тобто зауважено, що контролінг, використовуючи управлінську інформацію, прагне зменшити невизначеність майбутнього та адаптувати дії підприємства до постійно мінливих умов.

За результатами проведеного дослідження ідентифіковано низку завдань, які необхідно вирішити, впроваджуючи контролінг на підприємстві, основними з яких встановлено: оптимізацію управління організаційною структурою підприємства; організацію ефективної системи обліку операцій та результатів; впровадження систем планування, контролю та аналізу діяльності; забезпечення мотивації персоналу у підвищенні ефективності роботи підприємства; автоматизацію систем бухгалтерського обліку та управління підприємством. Визначено результативні аспекти функціонування системи контролінгу та обґрунтовано новітні концепції контролінгу, які можна успішно використовувати на вітчизняних промислових підприємствах.
Економіко-правові аспекти діяльності закладів громадського харчування Житомира на початку ХХ столітт
Authors: Тарасюк Галина Миколаївна , Чагайда Андрій Олегович , Мілінчук Ольга Володимирівна
Published: May 2021

Фундамент сучасного міського господарства міста Житомира почав закладатися на рубежі ХІХ–ХХ ст. У цей період активно розвивалася промисловість, торгівля, фінансові установи, а також сфера гостинності. Економіко-правові аспекти діяльності тогочасних закладів громадського харчування регулювалися Положенням про трактирні заклади 1863 року, згідно з якими до трактирних закладів належали готелі, подвір’я, мебльовані квартири, кімнати, ресторації, кавові будинки, кафе-ресторани, харчевні, буфети, трактири, намети для відпочинку та інші заклади з правом «тримати стіл» і подавати напої. Відповідно до законодавчих актів для цих підприємств встановлювався трактирний збір, розмір якого визначався спеціальною комісією Міської думи. Аналіз архівних даних щодо видачі дозволів на відкриття трактирних закладів, а також патентів дозволив авторам у статті узагальнити перелік з 5 ресторанів, 25 трактирів третього розряду з продажем алкогольних напоїв, 9 буфетів, 5 ренських льохів, 6 льохів російських вин (розпивочних), 1 пивної лавки трактирного промислу, 67 пивних розпивочних лавок, які діяли у 1912 році в місті Житомирі.

На основі архівних довідок щодо сплати трактирного збору у 1913 році в статті було сформовано унікальні списки ресторанів і трактирів третього розряду; льохів, буфетів та пивних лавок трактирного типу; а також розпивочних пивних лавок із зазначенням їх власників та місць розташування в Житомирі. У статті проаналізовано розподіл трактирних закладів на групи (розряди) та порядок визначення трактирного збору для кожної із груп. Підкреслено роль ресторанів та інших закладів харчування в складі або поряд із закладами розміщення. Проілюстровано оригінальну довідку про сплату трактирного збору власником ресторану, розташованого у готелі «Франція». У висновках підкреслено, що з початком Першої світової війни кількість закладів трактирного промислу постійно зменшувалась, а встановлення радянської влади призвело до остаточного припинення діяльності приватних закладів громадського харчування.
Purification and characterization of embryo-specific soy urease (Glycine max) and its antifungal potential against Paracoccidioides brasiliensis
Authors: Ângelo Elisângela Andrade , Da Cruz Tainá Michelle , Pattaro Júnior José Renato , Zanzarin Daniele Maria , Rodrigues Franciele Abigail Vilugron , Pilau Eduardo Jorge , Kioshima Érika Seki , Fernandez Maria Aparecida , Seixas Flavio Augusto Vicente
Published: May 2021

Ureases are amidohydrolases that catalyze the hydrolysis of urea to ammonia and carbamate. In addition to the enzymatic function, ureases have fungitoxic and insecticidal function, which are independent of their catalytic activity. Soy (Glycine max) has two main urease isoforms: ubiquitous and embryo-specific, the latter is present in beans. In view of the potential applications of ureases, this work aimed to extract, purify, characterize the structure, activity and fungitoxic activity of soy urease against Paracoccidioides brasiliensis. The biochemical characterization was performed, in terms of optimal pH and temperature, as well as the determination of the Michaelis�Menten constant (KM) and maximum velocity (Vmax). The protein sequence was identified by mass spectrometry and used in computational modeling of the biological structure. The optimum pH and temperature of the enzyme were 6.5 and 65 �C, respectively, KM 526 mmol L-1 and Vmax 7.4 mmol L-1NH3׵gurease-1�s-1 and biological unity as a trimer. The antifungal activity assays (in vitro) were promising, showing a fungicidal profile of the urease, with a minimum inhibitory concentration of 10 �g�mL-1. This work demonstrated, for the first time, the fungitoxic activity of embryo-specific soy urease against the Pb18 strain of P. brasiliensis.
Financiamento, bem-estar financeiro e qualidade de vida: Percepções dos beneficiários do Pronaf
Authors: Vieira Kelmara Mendes , Lenz Solei Rejane , Visentini Monize Sâmara
Published: May 2021

The study aimed to identify the perception of financing, financial well-being, and quality of life of the beneficiaries of the National Program for Strengthening of Family Agriculture (Pronaf). For that, quantitative research was carried out, through a survey, investigating 263 beneficiaries of the program were investigated, distributed in 25 municipalities in the state of Rio Grande do Sul. The data analysis was done through descriptive statistics and cluster analysis. The main results indicate that Pronaf in the studied region has been able to improve the productive conditions of families and quality of life, except for some aspects of the environmental domain that still need to be improved. On the other hand, the level of the financial well-being of these families is intermediate and strategic measures should be considered. Of the three clusters formed, the one with the lowest number of beneficiaries is composed of those with the worst perceptions of quality of life and financial well-being, who spend the same or more than they earn and have the lowest educational level and lowest income. While in the cluster with a better quality of life, a higher percentage of members with higher levels of income, education, more access to credit cards, and greater satisfaction with the financial situation is observed.
Mosquito surveillance of West Nile and Usutu viruses in four territorial units of Slovakia and description of a confirmed autochthonous human case of West Nile fever, 2018 to 2019
Authors: Čabanová Viktória , Tichá Elena , Bradbury Richard Stewart , Zubriková Dana , Valentová Daniela , Chovancová Gabriela , Grešáková Ľubomíra , Víchová Bronislava , Šikutová Silvie , Csank Tomáš , Hurníková Zuzana , Miterpáková Martina , Rudolf Ivo
Published: May 2021

Background

Despite the known circulation of West Nile virus (WNV) and Usutu virus (USUV) in Slovakia, no formal entomological surveillance programme has been established there thus far.

Aim

To conduct contemporaneous surveillance of WNV and USUV in different areas of Slovakia and to assess the geographical spread of these viruses through mosquito vectors. The first autochthonous human WNV infection in the country is also described.

Methods

Mosquitoes were trapped in four Slovak territorial units in 2018 and 2019. Species were characterised morphologically and mosquito pools screened for WNV and USUV by real-time reverse-transcription PCRs. In pools with any of the two viruses detected, presence of pipiens complex group mosquitoes was verified using molecular approaches.

Results

Altogether, 421 pools containing in total 4,508 mosquitoes were screened. Three pools tested positive for WNV and 16 for USUV. USUV was more prevalent than WNV, with a broader spectrum of vectors and was detected over a longer period (June–October vs August for WNV). The main vectors of both viruses were Culex pipiens sensu lato. Importantly, WNV and USUV were identified in a highly urbanised area of Bratislava city, Slovakias’ capital city. Moreover, in early September 2019, a patient, who had been bitten by mosquitoes in south-western Slovakia and who had not travelled abroad, was laboratory-confirmed with WNV infection.

Conclusion

The entomological survey results and case report increase current understanding of the WNV and USUV situation in Slovakia. They underline the importance of vector surveillance to assess public health risks posed by these viruses.
A pilot study for using high-volume colon irrigation bowel preparation for colon capsule endoscopy shows feasibility of adequate bowel prep with high patient satisfaction
Authors:   1Yale University, Hamden, CT, USA,   2Austin Gastroenterology, Austin, TX, USA,   3Hygieacare Inc., Norfolk, VA, USA,   4Eastern VA Medical School, Norfolk, VA, USA.
Published: May 2021

A feasibility study was performed to test a bowel preparation (BP) method that would improve patients’ experience of colon capsule endoscope (CCE) while retaining clinical adequacy. Specifically, the use of high-volume colon irrigation with the Hygieacare® System, HygiPrep™, was tested in conjunction with Medtronic’s PillCam COLON 2 Capsule. This prospective, single-center, and IRB-approved study evaluated HygiPrep use prior to the PillCam COLON 2 procedure instead of the standard split-polyethylene glycol-electrolyte (PEG) oral prep. The study was performed at Austin Gastroenterology (Austin, TX), and all capsule video files were forwarded to a Central Reader to evaluate and compile a study report. Six of the seven (86%) subjects completed both the HygiPrep and PillCam COLON 2 exams and were graded as excellent, good, or adequate by the Central Reader. Patients’ feedback reported positive satisfaction scores for both the HygiPrep and the PillCam COLON 2 procedures. These results support our hypothesis that HygiPrep was as effective as Split-PEG BP. We suggest that the HygiPrep, is a suitable BP for CCE, providing adequate BP and high patient satisfaction.
Requerimiento nutrimental y nutrición potásica en pepino Persa con poda a un solo tallo
Authors: Alejo-Santiago Gelacio , Becerra-Venegas Sergio Guadalupe , Bugarín-Montoya Rubén , Aburto-González Circe Aidín , Quiñones-Aguilar Evangelina Esmeralda , Rincón-Enríquez Gabriel , Juárez-Rosete Cecilia Rocío
Published: May 2021

En sistemas de fertirriego, el manejo adecuado de la nutrición potásica en el cultivo de pepino Persa incrementa la calidad de fruto. De igual manera, conocer los índices de extracción nutrimental son necesarios para establecer programas de nutrición mineral durante el ciclo del cultivo. La presente investigación tuvo como objetivo, evaluar el efecto de la nutrición potásica y cuantificar la extracción nutrimental en dos variedades de pepino Persa (Reehan y Khassib). El diseño experimental fue factorial 2 × 4, el primer factor fue las dos variedades de pepino y el segundo factor la concentración de potasio (K+) en la solución nutritiva, con concentraciones de 5, 7, 9 y 11 meq L-1. Las variables fueron: producción acumulada de fruto (PAF), número de frutos (NF), peso individual de fruto (PIF), diámetro de fruto y sólidos solubles totales (SST). El análisis de varianza indicó que hubo efecto de interacción de factores en las variables de PAF y NF (P ≤ 0.05). En ambas variedades, existieron diferencias significativas en todas las variables de respuesta cuantificadas y se encontró que Khassib tuvo los mayores valores (Tukey, P ≤ 0.05). Para el factor solución nutritiva, sólo hubo diferencias significativas en PAF y PIF. La mayor PAF (Tukey, P ≤ 0.05) se obtuvo con las soluciones nutritivas de K con 9 y 11 meq L-1; mientras que el mayor PIF ocurrió con 5, 7 y 9 meq L-1 de K. La concentración de K en la solución nutritiva tuvo una correlación positiva con el contenido de sólidos solubles totales en frutos de la variedad Reehan (r = 0.999), pero no en la variedad Khassib (r = -0.6829). El requerimiento nutrimental (kg) por tonelada de fruto fresco en Reehan fue N 3.93, P 0.46, K 3.11, Ca 0.79 y Mg 1.30; mientras que en Khassib fue N 5.87, P 0.49, K 3.11, Ca 0.85 y Mg 1.54.
La Orientación Vocacional y Profesional en la selección de carreras
Authors: Barreno Salinas Zoila
Published: May 2021

La elección de la carrera universitaria es una de las decisiones más importantes que una persona hace en su vida. Al término de sus estudios o al interrumpirlos por la necesidad de trabajar para ganarse el sustento, es el elegir la profesión para el que cree estar capacitado. La búsqueda profesional es uno de los problemas que enfrenta la juventud actual, y, rebasa los límites de la enseñanza y el ámbito del estudiantado, consecuentemente afecta a las actividades y a las preocupaciones económico-sociales del país. Interesa a toda la comunidad especialmente a los padres y maestros que detecten a tiempo en que campo del conocimiento, competencias o producción desean aplicar sus esfuerzos y proyectos personales. A fin de no generar en los jóvenes profundos sentimientos de frustración en el futuro y puedan asumir nuevos retos que la sociedad actual exige. A esto lo más aconsejable y apropiado es que se deba acudir a un profesional para que lo guie analizar sus habilidades, intereses vocacionales, aptitudes y destrezas. Es primordial que la elección venga cargada de un perfecto conocimiento de lo que le gusta y de lo que es capaz de hacer. La idea primordial es formarlos como profesionales exitosos.
NUMERICAL SIMULATION OF THE MOVEMENT OF SMOOTH PARTICLES AT THE ELECTROMAGNETIC SEPARATORS WITH DRUM
Authors: CĂSĂNDROIU TUDOR , CIOBANU GABRIELA VALERIA , VIŞAN LIANA ALEXANDRA
Published: May 2021

The paper presents the main theoretical elements underlying the seeds separation process after their surface. During the seed cleaning and sorting process according to the surface condition machines with electromagnetic or magnetic separators drums are used. In this paper is made a comparative theoretical analyze of smooth seeds movement on electromagnetic drum surface and trajectory in free flight, neglecting and taking into consideration air resistance, detached from the separation drum and it is evaluated the collection area of detached seeds. On this basis, were carried out several case studies and numerical simulations for three different machines.
GIS BASED DECISION SUPPORT SYSTEM FOR SEISMIC RISK IN BUCHAREST. CASE STUDY – THE HISTORICAL CENTRE
Authors: GHEORGHE DIANA , ARMAS IULIANA
Published: May 2021

Because of the increasing volume of information, problem decisions tend to be more difficult to deal with. Achieving an objective and making a suitable decision may become a real challenge. In order to better deal with decision making, decision support systems (DSS) have been developed. The decision support systems (DSS) can be used in any kind of a decision-making process and are very suitable in situations that involve a lot of stakeholders and a large number of criteria. DSS offers support in the decision-making process (how a decision should be made), and it does not focus on the result (what decision that should be made). DSS can also involve a large number of stakeholders and criteria, in the same time. A limitation of this method is that, regardless of the mathematical results, the final decision has to be made by the decision maker. Depending on the nature of the decision problem, a decision maker can use decision support systems (DSS), if the decision problem is economic or technical, and spatial decision support systems (SDSS), if the decision maker is faced with a spatial decision problem. The main objective of the present study is to apply a spatial decision support system in order to find a suitable shelter in the historical centre of Bucharest City in the post-disaster phase, in case of an earthquake occurrence. The present work represents a first step in applying SDSS in the context of the seismic risk in Bucharest. For the present paper, the SMCE Module for ILWIS 3.4 was used. The method included the following steps: structuring the problem in a decision tree, applying standardization and weighting methods to the criteria, finding suitable alternatives and choosing one of the alternatives. The results show that several buildings can be used as a shelter and among these are ‘Creditul Roman’ Bank Palace, the National History Museum and the National Bank of Romania.
THEORETICAL ASPECTS ON THE MOVEMENT OF PLANT FRAGMENTS ON THE SURFACE OF A PLANE SIFTERS CLASSIFIER
Authors: PRUTEANU AUGUSTINA , VLADUT VALENTIN , DAVID LADISLAU
Published: May 2021

This paper presents the main theoretical elements underlying the process of dimensional separation of the fragments of chopped medicinal plants. To sort chopped plant mixture from the same medicinal plant, there are used vibratory classifiers with plane sifters, which are the active working body. Case studies were conducted and there were analyzed, based on numerical applications, the movements of plant fragments on a classifier with linear vibrations along the sifter, existing in practice. Numerical simulation has provided information on trajectory parameters of the jump of a plant fragment on the vibratory plane sifter, useful elements in the theoretical grounding of the equipment workflow.
OVERVIEW OF WORKING OF STRILING ENGINES
Authors: NARAYAN SUNNY , GUPTA VIKAS
Published: May 2021

Engines are common devices which are important sources of power to run several devices in modern society. Many of these engines are very complex and need high levels of technological advances for smooth operations. This papers focuses on the identification, design and construction of a Stirling engine which can be easily manufactured without any special tooling or exotic materials. The underlying theory of the device is also presented and discussed with future recommendations to improve the current design.
ENVIRONMENTAL SYSTEM ENGINEERING (ESE): MODELING AND OPTIMIZATION OF A TEXTILE EFFLUENT DISCOLORATION PROCESS BY SORPTION
Authors: ZAHARIA CARMEN
Published: May 2021

Nowadays, an interdisciplinary field of engineering that focuses on analytical and/or empirical models represented by mathematical, data-driven and biotic structures combined with physical, biological and ecological processes in water, air and eco-systems is developing, i.e. environmental system engineering (ESE). In this system, environmental modeling and process optimization acts together for solving problems with environmental systems, especially for minimizing pollution, or eco-toxicological effects. The present paper proposes the study of modeling and optimization of an environmental system (i.e. textile wastewater treatment system based on sorption onto indigene peat) for its discoloration (consequently, decreasing of color, organic and inorganic loads of effluent discharged in aquatic receptor, or inside reused). All performed laboratory tests consisted in 22 hours-sorption experiments onto peat applied for a real colored textile effluent, organized with respecting of an empirical planning by a central active composite rotatable 23 order design, considering as independent variables the peat dose (X1), pH (X2), and temperature (X3), and as optimization criterion, or decision function, the discoloration degree, or color removal (Y, [%]). The mathematical model was found adequate for the textile wastewater treatment, and the optimal operational conditions for highest discoloration efficiency were proposed.
ANALYSIS OF PRESSURE LOSS COMPONENTS IN AN INDUSTRIAL EXTRACT DUCT SYSTEM
Authors: SODIKI JOHN IRISOWENGIBIA
Published: May 2021

The frictional head loss and the loss through fittings are computed for branch duct runs of an industrial extract ventilation system. Results show increases of both of the aforementioned loss components with increase in duct length. Furthermore, the fraction of the total loss due to fittings decreases from 0.60 to 0.45, with a corresponding increase of the fraction due to friction (from 0.40 to 0.55).Representative fractions of head loss components, obtained in the manner of this study, are shown to facilitate loss estimates and extract fan selection.
CONCEPTUAL MODEL FOR ENERGY-EFFICIENCY MANAGEMENT IN STEAM-POWER PLANTS
Authors: DINOLOV OGNYAN
Published: May 2021

An aggregate algorithmized conceptual model for controlling the energy efficiency in the steam-power plants, with taking into account the deviations in the qualitative characteristics of the used fuel, is proposed and justified. The model is applied for a coal-fired power plant, at two of its stages, through simulations in MATLAB Simulink and analyzing some of the data with the program Statistica. The development creates preconditions to algorithmize (to model) comprehensive energy efficiency measures in the operating plants, and to design and build new systems for monitoring and controlling the auxiliary electric power demand.
THEORETICAL ANALYSIS OF INFLUENTIAL PARAMETERS TO COMPRESSION AND DECOMPRESSION PROCESS OF COMPRESSED OIL IN HYDRAULIC SYSTEMS OF THE PRESS
Authors: ŽIVKOVIĆ MILUTIN
Published: May 2021

Compressibility of hydraulic oil is very significant for large diameter cylinder presses, especially if they are exposed to high pressures. The paper presents a theoretical analysis of the process of compression and decompression of oil in the cylinders with and without the presence of air presenting an analog model. Although considerations are relating to the ideal conditions of the process of compaction, the paper defines the basic mathematical processes depending on compression and discharge of the same. They refer to the definition of the time discharge and elimination of adverse effects in the same.
MODEL FOR ENERGY-EFFICIENCY AUDIT AND MONITORING OF THE COAL PROCESSING SYSTEMS IN THE FOSSIL-FUEL POWER PLANTS
Authors: DINOLOV OGNYAN
Published: May 2021

Based on interpretation of existing developments, an aggregate model for energy audit and monitoring of the electric-energy efficiency in the coal processing systems in the fossil-fuel power plants is developed. The model takes into account the nominal power capacities of the available drives, by which the usability of the installed power capacity is considered and the interdependence between the power consumed and the relative consumption is avoided in determining the aggregate relative electric-power consumption. The model is justified by conducting an energy audit of a typical coal processing systems in operation. The results of this research can be a basis for the development of models of systems and systems for qualitatively new monitoring of the overall electric-energy efficiency in the fossil-fuel power plants.
PROPER TIME IN TECHNICAL SCIENCES AND ALTERNATIVE NOTIONS FOR THE FORCE, MECHANICAL WORK AND HEAT
Authors: MAFTULEAC ALEXEI
Published: May 2021

The notion of proper (localized) time is one of the more important in the theory of relativity and is often used to explain phenomena that occur in conditions of high speeds or gravitation. In this paper, on the basis of the concept of proper (localized) time we tried to explain the functioning of simple mechanisms as a change in their space/time relationships, and to consider from another point of view some notions of physics (mechanics). A hypothesis about space and time equivalence and their mutual compensating change in every phenomenon that occurs, has been proposed. This hypothesis is substantiated with formulas and data from literature. This article may be of interest to the physicists and engineers.
A SYSTEMATIC STUDY REGARDING THE IMPORTANCE OF OBTAINING ECOLABEL IN ROMANIA
Authors: TEMEA ANTONINA , NEDEFF VALENTIN , COMOGLIO CLAUDIO , BOTTA SERENA , PANAINTE-LEHADUS MIRELA
Published: May 2021

The purpose of this paper is to review and present a short synthesis of the scientific literature on Ecolabel and an analysis of the types of products and services in Romania that obtained this environmental label. European eco-label is the only environmental quality label (type I; ISO 14024), awarded at institutional level (EC) valid all around the Europe, and it represents a unique opportunity to satisfy consumer expectations. In this way is promotes the design, production and marketing of products with lower environmental impact during their entire life cycle compared to other products in the same category. The EU Ecolabel covers a wide range of product groups, from major areas of manufacturing to tourist accommodation services. Key experts, in consultation with main stakeholders, develop the criteria for each product group in order to decrease the main environmental impacts over the entire life cycle of the product. Because the life cycle of every product and service is different, the criteria are tailored to address the unique characteristics of each product type. The European Ecolabel was introduced in Romania in 2002.
MICRO DETERMINATION OF DOPAMINE IN BIOLOGICAL SAMPLES BY COUPLING REACTION
Authors: MUKLIVE AL-OGAIDI AHMED JASSIM
Published: May 2021

The paper presents the development of an analytical method to determine dopamine by coupling reaction with diazotized solution of 4-Aminoantipyrine in basic media to give a compound with a single azo dye salt having orange color soluble in water. A calibration curve for a range of concentration (9.14x10-5 – 2.28x10-3 μg.mL-1) was realized and the value of molar absortivity was 1.5x103 L.mol-1.cm-1, with a relative standard deviation more than 1.26% and a recovery 98.77%. As we study the nature of the azo dye by mole fraction method, from the practical value we found that the mole fraction of the dye compound is 1:1 (dopamine: 4- amino antipyrine) and the stability factor reach to 1.4x106 L.mol-1. The described procedure is very simple, low-time-consuming, provides high throughput of examined samples, and could be used for routine screening and confirmatory analyses as well. The method was successfully validated to the analysis of the dopamine in biological samples.
OPTIMIZATION AND ENERGY SAVING WHEN CHOOSING THE SITE OF INSTALLATION OF A CRUSHING STATION IN A MOUNTAINOUS TERRAIN CASE OF THE DJBEL EL BORDJ CAREER, SIDI BELABBAS, ALGERIA
Authors: KHEBBAB RACHID , REMLI SAMIR , ROUAIGUIA ISSAM , BENSELHOUB AISSA
Published: May 2021

In open pit or underground mines and quarries, especially in mountainous terrain, the choice of the perfect place to install a crushing station requires a decision finalized by a detailed study of the areas close to the quarries such as the water drainage, the morphology of the deposit, the installed capacity, the opening mode of the deposit etc. For this purpose, in this article we will propose an installation of the crushing station of the quarry Djbel El Bordj which serves to save energy throughout the life of the quarry, and also will gain the transportation distance of the stones that determines the number of dumpers needed for planned production.
EFFICIENCY OF WATER FILTERING PROCESS DEPENDING ON THE FILTER LAYER POROSITY AND FLOW - A MATHEMATICAL MODEL
Authors: TIRTOACA IRIMIA OANA , NEDEFF VALENTIN , PANAINTE-LEHADUS MIRELA , TOMOZEI CLAUDIA
Published: May 2021

Mathematical modeling represents a challenge for any researcher or engineers that working in the field of applied sciences. The experimental approach to the water filtering process allowed achieving and verification a three-dimensional mathematical model, depending on the intake flow of the filter, the porosity of the filter layer and the nature of the filter layer. The mathematical model was developed and verified using the software Table Curve 3D. It was found that the mathematical model proposed offers a viable and robust method for determining the mechanical filtration efficiency of water.
OPTIMIZATION OF NEUROTRANSMITTERS SEPARATION UNDER HILIC CONDITIONS
Authors: TAMPU RALUCA , TAMPU CATALIN
Published: May 2021

This paper presents the optimization of a hydrophilic interaction chromatographic method for the separation of eleven catecholamines, indolamines and their precursors and metabolites. The studied parameters are: the organic modifier nature and percentage, the salt nature and concentration, the mobile phase pH and the column temperature. The best results in terms of separation were obtained using a mobile phase composed of acetonitrile and ammonium formate (150 mM pH 3) 85:15 v:v.
BRIDGING ENVIRONMENTAL IMPACT OF FOSSIL FUEL ENERGY: THE CONTRIBUTING ROLE OF ALTERNATIVE ENERGY
Authors: OLUDAISI ADEKOMAYA , KAYODE ADAMA , AYODEJI OKUBANJO
Published: May 2021

The demand for fossil fuel energy remains high amid challenges as it relates to its sustainability among the developing countries of the world. Nigeria remains one of the top consumption of fossil fuel energy considering the large deposit of hydrocarbon in some parts of the country. This energy has been widely used globally with attendant implication on climate and environmental crisis. In this study, attempts were made to portray the environmental impact of fossil fuel energy with attendant effect on global temperature and rising water level. Global warming, among other effect of climate change is now noticeable in all facet of the universe and key of the methodology employed in this work is to assess the existing mitigating strategy and recommend long-lasting approach as it relates to efficient energy use. Key of the conclusion from this work futures the development of municipal solid waste (MSW) as sustainable energy fuel.
OBSERVATIONS CONCERNING THE HARMFUL ENTOMOFAUNA FROM WINTER RAPESEED CROPS IN THE CONDITIONS OF CENTRAL OF MOLDAVA, BETWEEN YEARS 2014-2017
Authors: URSACHE PAULA -LUCELIA , TROTUS ELENA , BUBURUZ ALEXANDRA -ANDREEA
Published: May 2021

During 2014-2017, 22 species were identified in the yellow bowl trap type installed in winter rapeseed crops established at A.R.S.D. Secuieni. Of these, 11 species are specific to winter rapeseed crops and 11 species were accidental identified because of the proximity with different agricultural crops (maize. sunflower. grain cereals). The highest abundance was registered by Epicometis hirta Poda species which accounted 914 specimens collected during the analyzed period. The species were integrated into classes of dominance ((D1 - subrecedent species. D2 - recedent species. D3 - subdominant species. D4 - dominant species and D5 - eudominant species). Meligethes aeneus F., Ceuthorrhyncus napi Gyll. and Epicometis hirta Poda. being considered eudominant species belonging to the D5 class. The Ceuthorrhynchus napi Gyll., Meligethes aeneus F., Epicomites hirta Poda., Psylliodes chrysocephala L., Subcoccinella 24 punctata L., Oulema melanopa L. species were classified in the constancy class - C4 - euconstant species. Meligethes aeneus F., Epicometis hirta Poda and Ceuthorrhynchus napi Gyll. species recorded the highest values for the index of ecological significance (W %) and were classified in the W5 class - characteristic species. The collected entomofauna belongs to five orders: Coleoptera, Heteroptera, Lepidoptera,. Diptera and Hymenoptera. The highest number of species (17 species) and the highest number of collected speciemens (3246 specimens) belonged to the Coleoptera order.
NEW TRANSITION METAL OXALATO COMPLEXES WITH DABCOH22+ AS ADVERSE CATION: SYNTHESIS AND INFRARED STUDY
Authors: NDIAYE MAMADOU , SAMB ABDOULAYE , DIOP LIBASSE
Published: May 2021

On allowing DABCOH2(HC2O4)2 to react with transition metal dihalides in ethanol, a new series of complexes of general formula M(oxalate)2 DABCOH22+. nDABCOH22+.2X- (n=1/2;1) have been obtained. When (n=1) a dimeric structure is suggested, the two monomeric species being hold together by biprotonated DABCO through N-H…O hydrogen bonds. In the case of the complex M(oxalate)2DABCOH22+ .1/2 DABCOH22+.2X- -M = Ni, Cu- the structure is an infinite chain. The environment around the metallic centers is octahedral or square pyramidal. The oxalate behaves as a monochelating and hydrogen bonds involved ligand or is only concerned by hydrogen bonds.
APPLICATION ON THE WORKPLACES HAZARDS MEASUREMENT IN A BAKERY UNIT
Authors: PANAINTE-LEHADUS MIRELA , BARSAN NARCIS , IRIMIA OANA , TOMOZEI CLAUDIA , MOSNEGUTU EMILIAN , NEDEFF FLORIN
Published: May 2021

The workplaces, where human activity takes place, is characterized by some complex factors that can affect the health of employees. These factors (temperature, humidity, noise, vibration, toxic substances, lighting, particulate matter etc.) can also be generalized as dangerous factors or workplaces hazards [1, 2, 3, 4]. In this article are presented some results obtained after workplaces hazards measurements in a production and sales bakery unit for the parameters: O2, SO2, CO, NH3, temperature, humidity, suspension powders, VOC. The values of the measured parameters particulate matter (0.17 mg/m3 - 0.30 mg/m3) respectively volatile organic compounds (0.8 ppm ÷ 21.1 ppm) were below the maximum allowable concentrations, which indicates a safe workplaces for employees. The other parameters measured values, respectively temperature and humidity, were between 22.100C - 29.20 C for temperature and 47% - 53% for humidity.
STUDIES ON CERTAIN GROWTH PARAMETERS OF DIFFERENT PROBIOTIC STRAINS
Authors: RĂDUCANU DUMITRA , GEORGESCU ANA-MARIA
Published: May 2021

The researchers found that probiotics contain microorganisms belonging to genus: Streptococcus, Lactobacillus, Bacillus, Aspergillus, Saccharomyces, Enterococcus, Pediococcus, enzymes (lactoperoxidase, gluconase, nonspecific enzymes) and rumen extracts. In this study, commercial probiotic bacteria known as "Linex" were used as samples. Cultural characteristics of these probiotic bacteria have been isolated and studied. It has been found that solid culture medium (nutritional gelose) favored the growth and development of bifidobacteria better than the liquid nutrient medium (nutrient broth). Thus, the number of bifidobacteria resulting from direct counting with Thoma chamber was of 7890 cells.
NEW TETRANUCLEAR AND MONONUCLEAR OXALATO ORGANOTIN (IV) COMPLEXES WITH MONOCYCLOHEXYLAMMONIUM AS ADVERSE CATION: SYNTHESIS AND INFRARED STUDY
Authors: SARR MODOU , DIASSE-SARR AMINATA , DIOP LIBASSE
Published: May 2021

Eight new adducts and derivatives have been synthesized and studied by infrared. Discrete, layered or infinite chain structures are suggested with an oxalate behaving as a monodentate, bidentate, monochelating or bichelating ligand, the environment around the tin centres being tetrahedral, cis trigonal bipyramidal or octahedral. In all the studied compounds, supramolecular architectures may be obtained when intermolecular hydrogen bonds are considered.
NEW MX2 AND M’Cl3 (M = Cu, Zn; M’= Y, Dy, Pr; X = Cl, Br) MALEATO COMPLEXES AND TETRAPHENYLANTIMONY FORMIATE ADDUCT: SYNTHESIS AND INFRARED STUDY
Authors: SEYE DAME , DIOP CHEIKH ABDOUL KHADIR , TOURE ASSANE , DIOP LIBASSE
Published: May 2021

Eleven complexes and adduct have been synthesized and studied by infrared. The suggested structures are discrete with tetrahedral, trigonal bipyramidal, square planar or octahedral environments around Zn, Ni, Hg and Cu centres – the coordination number is eight in the yttrium compound and ten in the dysprosium one-. The maleate anion behaves as a bidentate, a monochelating, a bichelating or a tetradentate ligand while the formiate anion behaves as a monodentate ligand. For compounds containing a protonated amine or a methanol molecule, when hydrogen bonds are considered a supramolecular architecture may be obtained.
SOLVING TECHNICAL PROBLEMS THROUGH EQUATIONS
Authors: VIERU DANILA , VOICU GHEORGHE , TOMA LAURA , TUDOR PAULA
Published: May 2021

The need for solid household waste (MSW) generated by economic and domestic activities is continuous and should be imposed to protect the health of the population and environmental factors. After sorting the generated waste, „the remaining residue” favours the occurrence of some pollutants, among which we mention suspended particulates, disagreeable odours, greenhouse gases, etc. This waste has to be managed in safe health and environment, no matter where it was generated. Managing them means either storing in statutory environmental protection facilities or incinerating in authorized installations with integrated environmental permitting. Waste storage may be subject to a mathematical equation called the time equation of a landfill. On the basis of such equation, it will be possible to calculate annually the amount of degraded waste gas generating gas (LFG) containing CH4 and CO2. The amount of degraded waste means waste with high dissolved organic carbon (DOC).
PERFORMANCE OF WIRELESS MEASUREMENT SYSTEM FOR SOIL PROPERTIES MONITORING
Authors: GEORGIEVA TSVETELINA , PASKOVA NADEZHDA , KUNCHEVA GERGANA , DASKALOV PLAMEN
Published: May 2021

A developed wireless microprocessor system based on ATmega328P microcontroller and Arduino sensors for measurement of soil properties is described in the paper. The accuracy of the proposed system is analized during the measurement of basic soil parameters – electrical conductivity and acidity. The system has been experimentally tested with soil samples from eight soil types and soil solution. The results for the soil parameters obtained with the wireless measurement system are compared with a reference measuring instrument. The presented wireless system for soil parameters monitoring shows good measurement accuracy sufficient for engineering research.
THE RELATIONSHIP BETWEEN THE ANTHROPOMETRIC MEASURES AND RESPIRATORY FUNCTIONS OF TOBACCO WORKERS
Authors: AIYEDUN PETER OLAITAN , ISMAILA SALAMI OLASUNKANMI , OJO DAVID , ADENIRAN GIDEON OLABODE
Published: May 2021

The aim of this research was to establish the relationship between some anthropometric measurements and peak expiratory flow rate of tobacco factory workers. Eighty permanent workers who had been employed for at least three years with no history of cardiovascular disease were involved with the study. The measured anthropometric data (chest width and depth, height and weight) were analyzed using SPSS (V 16.0) to develop predictive models for PEFR of tobacco factory workers. It was concluded that the developed models could determine the PEFR of workers in a tobacco manufacturing company.
SENSITIVITY ANALYSIS OF AVALANCHE PHOTODIODE AND PIN DIODE DETECTORS IN OPTICAL RECEIVERS
Authors: PROMISE ELECHI , SUNNY ORIKE , WINNER MINAH-EEBA , CHIKERENMA EZINNE IKPO
Published: May 2021

This research explained how to establish the optical receiver sensitivity and the link power budget design in terms of quality factor, receiver power and bit error rate (BER) for several values of attenuation at 100km fiber length. The design parameters which were taken into consideration were a constricted transmitter, Zender modulator, attenuator, lowpass Bessel filter, Non-Return-to-Zero modulation format, CW laser, avalanche photodiode (APD) and PIN diode detectors and the type of network coding, Bit Error Rate Analyzer (BER) etc. The objective was achieved using optisystem 7 professional simulation software layout to design the power system budget and optical receiver circuit, the avalanche photodiode and PIN diode were used as the detector. Optisystem simulations were used to determine the optimum power and the receiver sensitivity for several values of attenuation. This research investigated and analyzed the performance of optical receiver at a wavelength of 1550nm. Simulations were made and the Bit Error Rate analyzer values for the various parameters taken. Several values of Q-Factor and Bit Error Rate were tabulated, and the corresponding graphs plotted. There was an improvement in the quality factor, the quality of signal with a low noise value and the extended transmission or propagation time was reduced.