bluuebunny/crossref_metadata_2025 huggingface dataset:
APPLICATION OF GEOINFORMATION TECHNOLOGIES AND REMOTE SENSING TO DETECT LAND USE AND CHANGES IN THE SOIL COVER CAUSED BY THE DRYING OF THE ARAL SEA
Authors: SAFAROV Eshkabul , PRENOV Shavkat , BEKANOV Kuatbay , SALOKHITDINOVA Sevar , UVRAYIMOV Sunnatilla
Published: August 2021

It is established that the Aral Sea problem, which is due to the negative impact of human activity over time, has led to environmental degradation in the Aral Sea region and changes in the soil cover. The extent of this ecological problem can be detected using geoinformation technologies and remote sensing methods. In this study, the maximum likelihood classification algorithm was applied in the presentation of Landsat images to detect changes in the soil cover based on multispectral satellite data obtained from Landsat 7 and Landsat 8 for 2008 and 2018, respectively. The resulting land-use maps indicate a significant increase in saline land from 18% to 22% during the period under study. These land transformations pose a severe threat to the land resources of the area. Consequently, proper management of the land resources is required to preserve them and to ensure that they continue to play their part in the socio-economic development of the region.
THREE-DIMENSIONAL SETUP OF COMPOSITE MATERIALS AS A WAY TO ACHIEVE HIGH MECHANICAL PROPERTIES
Authors: AMANKULOV Yerdos , PETUNINA Irina , LOBANOVA Nadezhda
Published: August 2021

Polymer resins are popular dry lubricants and protective coatings for metal products. However, their friction coefficient is high, which leads to increased wear rates and limited service life. Reinforcement with nanoscale fillers, due to their large surface area and their uniform distribution within the polymer matrix volume, can help reduce friction and wear. This paper aimed to study the effect of three-dimensional organization of silicon dioxide nanoparticles with a concentration of 1, 3, and 5% on the mechanical properties of an epoxy resin. The dispersion of nanoparticles was carried out using ultrasonic field technology. The friction coefficient was measured using a pendulum tribometer. Empirical results have shown that reduction in the concentration of nanoparticles from 5% to 1% resulted in a two-fold decrease in the values of the friction coefficient. Also, it was found that prolongation of test time in experiments with a nanoparticle concentration of 3 and 1% had practically no effect on the friction coefficient values. This behavior is associated with the polymer interface mobility regulation due to the low concentration of nano inclusions and uniform three-dimensional organization in the polymer matrix by the ultrasonic field, which contributed to a uniform redistribution of applied loads. The developed technique can be used to other types of polymer nanocomposites to study the effect of the three-dimensional organization of nanoscale fillers on wear resistance, bending strength, and impact resistance.
SECONDARY STUDENTS’ VARK SENSORY PREFERENCES IN SCIENCE LEARNING: ARE THEY RELIABLE?
Authors: ORTEGA TORRES Enric , SOLAZ PORTOLÉS Joan-Josep , SANJOSE LÓPEZ Vicente
Published: August 2021

Students’ sensory preferences (SP), that is, the ways or channels they prefer to receive the information, have been proposed as personal factors influencing science learning. Some studies relate improvement in learning to the adequacy of instructional resources to individual SP. A widely used instrument to determine SP is the VARK questionnaire. However, the individual SP has to be reliable to be considered useful to improve instruction. There are not enough studies on the reliability of this questionnaire. This study aimed to assess the reliability (temporal stability) of SP, as measured by the VARK instrument. Also, the reliability of the student’s subjective perception of his/her personal SP was evaluated. A mixed methodology was used, combining techniques for obtaining both quantitative and qualitative information. The sample was made of 582 male and female students, from 7th to 11th grades. The questionnaire was administered twice to a subsample of students, with a few months’ delay. Besides, a small group of students was interviewed. In the analysis of the results, using chi-square tests (X2) and a repeated measure MANCOVA, no massive permanent changes in the group distribution of SP were found along with secondary education. This would be useful for teachers to adapt learning materials to their students’ preferences. The individual SP was stable enough under a permissive criterion, but not when a stricter standard was used. Besides, the reliability of students’ self-perception of SP was low.
CLASSICAL METHODS TO PREDICT THE PERFORMANCE OF BUCHHOLZ RELAY BY GIVING THE PHENOMENA OF INCIPIENT FAULT INTO THE OIL IMMERSED TRANSFORMER
Authors: GOERITNO Arief , NUGRAHA Irwan , BAKTI Prayoga
Published: August 2021

This work explains the classical methods for predicting the performance of the Buchholz relay. The traditional methods use the simulation by giving a phenomenon of incipient fault into the oil-immersed transformer. The Buchholz relay is a type of mechanical relay whose operating mechanism is influenced by oil and gas in the transformer tank tend to move into the expansion tank through the interconnecting piping. This device is a critical component that is integrated into the oil-immersed transformer protection philosophy. An electronic circuit-based simulator that is integrated with a circuit breaker operation control panel was chosen as a means for creating conditions during alarm or trip. The performance measurement provides simulated fault conditions for setting on alarm and trip. The provision of faults simulation in the form of pressing a push-button one time to simulate the existence of an alarm condition. In that condition, the CBs control panel does not operate, but the appointment of an alarm signal. Based on that, the Buzzer sounds and the status check trip is still normal or "no lock-out". Giving full pressure as a form of simulation for trip conditions on the Buchholz relay, the control panel designates the condition of the two CBs (side of 150 kV and 20 kV side) open, and the alarm signal designation also occurs with Buzzer sounding. Hence, the check trip status becomes "lock-out". The Buchholz relay serves to detect the presence of gas caused by local heating or pressure surges in the transformer oil. After giving all of the conditions, the Buccholz relay performance is known.
STEM-INQUIRY BRAINSTORMING: CRITICAL AND CREATIVE THINKING SKILLS IN STATIC FLUID MATERIAL
Authors: SAREGAR Antomi , LATIFAH Sri , HUDHA Muhammad Nur , SUSANTI Fina , SUSILOWATI Nur Endah
Published: August 2021

The Science, Technology, Engineering, and Mathematics (STEM) approach has become an interesting research object. Several studies have proven that the STEM approach has overcome various learning problems. It involves many teaching and learning aspects, either the cognitive, affective, or psychomotor domains, positively affecting the students' learning outcomes. This study aimed to describe the effect of the STEM approach with the Brainstorming method on critical thinking and creative thinking skills of students in physics learning. This study employed quasi-experimental research with a non-equivalent control group design. The sampling was done through the simple random sampling technique with a total sample of 60 high school students. The instrument used in this study was an essay test instrument to measure critical thinking and creative thinking skills. The Multivariate Analysis of Variance (MANOVA) was used as the research hypothesis testing technique. The results showed that the significance score of critical thinking skills was 0.001, and the significance score of creative thinking skills was 0.019. So, it can be concluded that the application of the STEM approach with the Brainstorming method is effective in improving students' critical thinking and creative thinking skills in learning physics, both through multivariate tests and separate tests.
RAW MATERIAL SOURCE OF HYDROCARBONS OF THE ARCTIC ZONE OF RUSSIA
Authors: PRISCHEPA Oleg M , NEFEDOV Yuri V , IBATULLIN Aydar Kh
Published: August 2021

The study of the hydrocarbon potential of the Arctic is being considered in Russia as the most crucial direction of preparing a new raw material base of oil and gas, which will replace the extracted reserves in traditional areas of development during the second third of this century. The sharp fall in global hydrocarbon prices has led to a reduction in research and exploration costs, especially in hard-to-reach areas and hard-to-recover reserves as well as the need to determine the contribution to the country's fuel and energy balance from the hydrocarbons development of the Arctic zone, including the shelf, without which it is impossible to plan and develop new expensive projects. A fair assessment of oil and gas potential, based on a set of ideas about the processes of formation of sedimentary basins and oil and gas generation processes, contributed to obtaining new geophysical information on the results of seismic work executed in the Arctic zone of the Russian Federation between 2010 and 2020. A quantitative assessment of oil and gas resources was performed using geological analogies (for wellstudied geological and geophysical areas) and the volume-genetic method (for less studied basins). It showed significant differences from the most well-known assessments of the Arctic, both in terms of the total volume of hydrocarbons and their phase composition. It was concluded that there is ambiguity in assessing the potential of deepwater zones of the Arctic seas. Because of that, it is important to study coastal and shallow areas, especially oil content.
STUDY OF THE PROCESS OF EROSION OF A MICRO HYDROELECTRIC POWER PLANT (HPP) TURBINES IN THE FORM OF A HYDROCYCLONE
Authors: ZHUZBAY Kassymbekov , KULYASH Alimova , GALIMZHAN Kassymbekov
Published: August 2021

One of the severe problems of a hydroelectric power plant (HPP) is providing a hydroelectric unit with purified water with the required pressure. Otherwise, the central working bodies - hydraulic turbines - are subjected to abrasive wear and quickly fail. Abrasive wear reduces the efficiency and life of the turbine and causes problems in operation and maintenance. This research aimed to study the degree of abrasive wear (erosion rate) of the surface of a blade hydraulic turbine of a micro HPP during water purification using a hydrocyclone and to ensure its rational layout based on the studies. Investigation of damage to the turbine surface from the dynamic impact was carried out by computer modeling of the process using the Autodesk Simulation CFD program, with different versions of the hydrocyclone body and testing of an experimental sample. Additional software SolidWorks (flow simulation) was used to check the calculations. It was found that the forms of particle hardness in water significantly affect the rate and magnitude of erosion, and a different design of the treatment body in the form of a hydrocyclone in different ways ensures the separation of the flow into phases. A rational scheme for installing a hydraulic turbine inside a hydrocyclone was selected, which provides the required power characteristic of a mini hydroelectric power station and other necessary parameters. The highest degree of water purification from solid impurities (94%) was achieved using the configuration option in a cylindrical-conical design with a rotational water inlet into the hydrocyclone. The location of the hydraulic turbine inside a hydrocyclone of a certain design and the tangential supply of water to the blades of the hydraulic turbine significantly protects the surface of the unit from the effects of solid particles. Their service life can be increased without additional investment in the restoration of the unit.
MTT-BASED CYTOTOXIC EVALUATION OF AMBONESE BANANA STEM SAP (Musa paradisiaca var. sapientum (L.) Kuntze) ON FIBROBLAST CELLS
Authors: BUDI Hendrik Setia , JULIASTUTI Wisnu Setyari , ARIANI Winda
Published: August 2021

Traditional herbal remedies are naturally occurring, plant-derived substances with limited to no chemical processing and have been used in local or national healing traditions to treat illness. In global health debates, traditional herbal medicines are gaining considerable attention. Many hope new research into herbal medicine will play a vital role in global health. Countries like China, India, Nigeria, USA, and also the World Health Organization (WHO) made large investments in ancient herbal medicines. Currently, the use of the Indonesian plant has dramatically improved the medical and dentistry field. The dental and oral care is often related to wounds, and the Ambonese banana stem has been proven as an effective treatment for these injuries. This study aimed to evaluate the effectiveness and safety of the Ambonese banana stem sap through cytotoxicity tests on the fibroblast cell culture of Baby Hamster Kidney-21 (BHK-21). This study was carried out on three BHK-21 fibroblast cell culture, namely, the media and cell control, and the Ambonese banana stem sap with a concentration of 10%, 20%, 30%, 40%, 50%, 60 %, 70%, 80%, 90%, and 100% incubated for 24 hours at 37ºC and 5% CO2. Then, MTT was evenly dispersed on the media to obtain accurate optical density value. All quantitative data were statistically analyzed using one-way ANOVA and Tukey's HSD Test. The result showed significant differences in optical density values between groups with p = 0.000 (p 0.05). There was no significant difference between the cell control and the Ambonese banana stem sap group with concentrations of 90%, 80%, 70%, 60%, 50%, 30%, 20%, and 10%. It was also observed that the Ambonese banana stem sap is nontoxic to fibroblast cells since its viability value was more than 60%.
A LABORATORY SYSTEM FOR INVESTIGATING OF FLUIDS FLOW CAPACITY THROUGH UNCONSOLIDATED SAND SAMPLES
Authors: SULAIMAN Izzat Niazi , TAWFEEQ Yahya Jirjees
Published: August 2021

Practically all studies of reservoir engineering involve detailed knowledge of fluid flow characteristics. The fluid flow performance in porous media is affected by pressure, flow rate, and volume of single fluid phases. Permeability is a measure of how well a porous media allows the flow of fluids through it. Permeability and porosity form the two significant characteristics of reservoir rocks. This research aimed to present the design of laboratory equipment to test the ability of fluid flow through different sandstone samples. Two sand core samples (coarse sand sample and fine sand sample) were tested. The laboratory findings measurements of porosity, saturation, total permeability, effective permeability, and relative permeability were evaluated. The laboratory tests were performed on partially saturated, unconsolidated core sand for two-phase fluid flow. The experimental work was developed for measuring the flow capacity achieved under the steady-state conditions method. Various grain sizes sands were selected as a porous medium to determine petrophysical properties and fluid flow capacity of the rock sample. Nitrogen and air were utilized as gas-phases, and, for liquid-phases, water was chosen as an injection fluid. The steady-state process method was used to determine the permeability and relative permeability of unconsolidated sands to water flow. Different flow rates were measured for different pressure gradients in a viscose flow. As the flow rate increases, the pressure difference also increased. It can be observed that there are a direct correlation and relationship between the flow rate and the pressure difference. The core plug's absolute permeability was measured using Darcy Equation. Absolute permeability does not depend on fluid characteristics but only on media properties. The sample container contains a more significant amount of sand, decrease the permeability, and therefore requires high pressure for fluid flowing within the sample.
DEVELOPMENT OF CALIBRATION GAS MIXTURES (CARBON DIOXIDE AND OXYGEN IN NITROGEN MATRIX) AT A TYPICAL CONCENTRATION RANGE OF MODIFIED ATMOSPHERE PACKAGING
Authors: HINDAYANI Ayu , MULYANA Muhammad Rizky , BUDIMAN Harry , DARMAYANTI Nur Tjahyo Eka , ZUAS Oman
Published: August 2021

Measurement of carbon dioxide (CO2), oxygen (O2), and nitrogen (N2) concentration in modified atmosphere packaging (MAP) food is critical to be carried out by the food industry. A slight variation in concentrations of CO2, O2, and N2 in food packaging may have a significant impact on product quality and safety for human health. Accurate and reliable measurement of CO2, O2, and N2 concentrations in food packaging is crucial, and it can only be achieved by calibrating the gas analyzer. This study aimed to develop gas mixtures for the calibration of CO2, O2, and N2 gas analyzers at a typical concentration range of modified atmosphere packaging. The calibration gas mixtures were prepared gravimetrically by following ISO 6142. The concentration ranges of CO2, O2, and N2 for calibration gas mixtures were set at 9-19% mol/mol, 1-5% mol/mol, and 74-88%
mol/mol, respectively. Each parent gas was identified for its impurities using gas chromatography with a pulsed discharge helium ionization detector (GC-PDHID). The compositions of CO2, O2, and N2 in the mixtures were verified by evaluating the internal consistency within the prepared gas mixtures using gas chromatography with a thermal conductivity detector (GC-TCD). The short term stability of the prepared gas mixtures was evaluated using an equal division method. The result showed that good internal consistency was achieved between the gravimetrical and GC’s verification values, having linear regression coefficient (R2) ≥ 0.999. The t-test result has shown that CO2 has better short term stability than O2 and N2. In conclusion, the developed calibration gas mixtures at a typical concentration range of modified atmosphere packaging have shown satisfying results for CO2 component. However, further evaluation is still required to minimize the instability of O2 and N2 components.
EFFICIENCY EVALUATION OF THE HEAT DEPARAFINIZATION OF PRODUCING WELL EQUIPPED BY SUB PUMP WITH HOLLOW RODS
Authors: LEKOMTSEV Alexander Viktorovich , KANG Wanli , GALKIN Sergey Vladislavovich , KETOVA Yulia Anatolievna
Published: August 2021

One of the main oil production complications is that asphaltene-resin-paraffin deposits (ARPD) are formed during production wells' operation. This is an urgent problem in the oil and gas industry, especially in the fields of the Ural-Volga region (Russia). This study aimed to develop a technological solution for the effective thermal treatment of deposits based on the wells' thermal state calculation during a sucker rod pump operation. In practice, the thermal effect on ARPD is carried out by flushing-out with a hot agent (water, oil). Traditionally, flushes are carried out through the casing annulus. However, this method is ineffective due to large heat losses and the impossibility of heating the inner part of the tubing in a sufficient way, where ARPD is deposited. Dynamic modeling of the process was performed in the ANSYS Fluent software product. The heat problem was solved on the basis of the Navier-Stokes Reynolds-averaged heat and mass transfer equation. It was noted that the temperature of the injected agent (hot oil or water) affects the temperature of the tubing's inner wall to a lesser extent than the coolant flow rate. It has been established that it is impossible to reach the melting point of wax at the submersible pump level. The flow rate of the coolant affects this parameter more intensively. When flushing with hot oil 120°C with a flow rate of 300 m3 /day, the temperature above the pump will be equal to the wax melting temperature. Calculations indicate that it is most advisable to use oil heated to 120°C as a coolant for flushing wells than water with a 90°C temperature. The implementation of the methods proposed can be used on any well equipped with a sucker rod pump.
CONCEPTUAL FRAMEWORK OF CRITICAL THINKING SKILLS FOR WORK AND ENERGY TESTS APPLIED TO PHYSICS LEARNING
Authors: SAPUTRO Sigit Dwi , A. TUKIRAN , SUPARDI Zainul Arifin Imam , JATMIKO Budi
Published: August 2021

Work and energy are contents traditionally addressed in the study of physics and engineering. This is because this topic is part of people's daily lives; that is, they are critical thinking skills included in 21st century learning achievements that must be mastered by students. This study aimed to make an appropriate assessment formulation to measure students' critical thinking skills in work and energy. The systematic method of review was carried out through three stages. The first step was to search for relevant literature sources through a database and books. The database used included SAGE Journals, Wiley Online Library, Science Direct, and Google Scholar. There were 115 journals or proceedings that have been examined and then selected 50 articles following established criteria. The second stage determined formulating achievement indicators, and the third stage developed conceptual tests of critical thinking skills. Based on this study on the conceptual framework of the study to measure students' critical thinking skills in teaching materials for work and energy, it was concluded that (1) indicators of critical thinking skills on work and energy include interpretation, analysis, evaluation, inference, explanation; (2) the basic principles of making critical thinking test instruments include presenting phenomena, open-ended tests, and testing the rationality of answers; and (3) there were examples of the application of the development of the critical thinking skills test instrument for indicator analysis.
ESTIMATION THE LEVEL OF ADROPIN FOR IRAQI PATIENTS WITH CARDIAC DISEASE AND ATHEROSCLEROSIS AND THE FACTORS AFFECTING ITS LEVEL
Authors: HAMODAT Zahraa Mohammed Ali
Published: August 2021

Adropin is a biomarker for cardiac disease and atherosclerosis. Discovered in 2008, this peptide is involved in controlling the metabolism of carbohydrates and fatty acids. Detailed knowledge of these peptides' mechanisms and the factors that affect their release can provide new diagnostic and treatment of metabolic disorders, including cardiac disease and atherosclerosis. This study aimed to estimate the level of adropin for Iraqi patients with cardiac disease and atherosclerosis and the factors affecting its level and its relationship with the studied variables. This study was conducted on 130 adults, including 90 patients suffering from cardiac disease and atherosclerosis, and 40 uninfected adults were considered a control group. Serum levels of adropin and lipid profile (HDL, LDL, and TC) were estimated . The results of the study showed a significant decrease in the level of adropin (p 0.0001) in the following cases: generally in all patients who affected with cardiac disease and atherosclerosis (4.3 ± 1.5 ng ml) compared with healthy subjects (10.2 ± 2.3 ng mL); in obese patients (3.4 ± 0.7 ng mL) compared to non-obese patients (5.2 ± 1.2 ng mL); in patients who also affected with diabetes mellitus type 2 (3.2 ± 0.8 ng mL) and patients who also affected with hypertension (4.1 ± 1.2 ng mL) when compared with patients who do not have other diseases (5.7 ± 1.5 ng mL). A negative significant correlation between serum adropin level and BMI (r=0.493; p=0.0001), LDL (r=-0.628; p=0.0001) level and TC (r=-0.249, p=0.018) level. A positive significant (r=0.395, P=0.0001) appeared correlation of adropin level with HDL level. It was observed that a lower adropin level could play a vital role in cardiac pathophysiology and atherosclerosis. Also, a decrease in the adropin level can be considered a risk factor for these patients. Therefore, measurement and surveillance of changes in serum adropin can consider as a new diagnosis and assessment of disease progression.
EFFECTIVE DISSIPATIVE PROPERTIES OF A WHISKERED LAYER IN MODIFIED FIBROUS COMPOSITES WITH WHISKERED FIBRES
Authors: LURIE Sergey A , RABINSKIY Lev N , KRIVEN Galina I , MAKOVSKII Sergey V
Published: August 2021

It is known that the mechanical properties of fiber-reinforced composites are controlled by the conditions of contact between the fiber and the matrix. In this regard, great efforts of mechanics are directed to developing various techniques to improve the quality of the interface. The most common are: modification of the fiber surface, improvement of chemical interactions, or the addition of a third phase (interfacial layer) between the fiber and the matrix. The most common are: modification of the fiber surface, improvement of chemical interactions, or a third phase (interfacial layer) between the fiber and the matrix. In this study, the authors aim to examine the effective dynamic properties of a whiskered layer of fibers in modified composites, taking into account the structural characteristics of the interfacial layer – its thickness – length of whiskers, volumetric content of whiskers, and their mechanical properties. The dynamic performance of the whiskered layer surrounding the base fiber in modified composites was estimated. The whiskered layer is considered a fibrous composite formed by nanoscale whiskers grown on the surface and a matrix. An epoxy binder or a viscoelastic polymer is considered as a matrix. An approximate model was used. The effective characteristics of the whiskered layer were modeled and determined as the properties of a transversally isotropic fibrous system with the isotropy axis coinciding with nanowhiskers in the whiskered layer. A feature of the whiskered layer is that the density of whiskers varies with distance from the fiber surface. Therefore, it depends on the length of the nanowhiskers (the thickness of the interfacial layer). In this case, it turns out that the bulk for the matrix in the whiskered layer, even at the maximum density of nanowhiskers grown on the fiber surface and for sufficiently thin interfacial layers, is very significant. Fuzzy fiber composite, nanofibers, epoxy binder, damping properties.
Quantifying Landscape Structure of the Kelantan River Basin Before and After a Major Flood Event Using Landscape Metrics
Authors: Abdul H.Y.
Published: August 2021

Over the years, flood is one of the natural hazards which occur all over the world and it is critical to be controlled through proper management. Flood in Kelantan is mainly caused by heavy rainfall brought by the Northeast monsoon starting from November to March every year. It is categorized as annual flood as it occurs every year during the Monsoon season. Severe flood events in Kelantan, Malaysia cause damage to both life and property every year and understanding landscape structure changes is very important for planners and decision makers for future land use planning and management. This research aims to quantify the landscape structure near to Kelantan River basin during the flood event using integrated approach of remote sensing (RS), geographic information system (GIS) technique and landscape ecological approach. As a result, this study provide new knowledge on landscape structure that contributes to understand the impact of flood events and provide the best ways to mitigate flooding for helping to protect biodiversity habitat and dwellers. As conclusions, this kind of study will give more benefits to various stakeholders such as Department of Irrigation and Drainage, Department of Environment, state government, fisherman and communities.
Drought Index Mapping in Java Island Using Sentinel-3 SLSTR
Authors: Wijayanti R.F.
Published: August 2021

As the most populous island globally, Java Island has various vulnerabilities to disasters ranging from geological to hydro-meteorological. One of the most common hydro-meteorological disasters is the drought that occurs every year in the dry season. This disaster causes crop failure, land and forest fires, and clean water shortages. In this study, the Sea and Land Surface Temperature Radiometer (SLSTR) instrument onboard the Sentinel-3 platform was used to map drought using the Vegetation Temperature Condition Index (VTCI) algorithm based on the scattering space technique of Land Surface Temperature (LST) and Normalized Different Vegetation Index (NDVI). During 2018, the highest and lowest LST occurred on September 28 (309 oK), and February 1 (278 oK); the highest and lowest NDVI occurred on July 1 (0.466) and November 13 (0.221). In comparison, the driest conditions indicated the lowest VTCI (0.162) on July 17 and the wettest on August 28 (0.508). The driest and wettest situation co-occurred: at the end of the dry session and the rainy session, it shows that the rain greatly contributes to high VTCI. A regular drought mapping needs to be performed as an effort to disaster risk reduction. Drought maps are then used as a spatial recommendation in reforestation intervention to reduce drought in the future.
Solid Waste Disposal Management Practices in Ghana, A Case Study of Subin Metropolis
Authors: Owusu-Ansah Prince , Woangbah Saviour Kwame , Anim Benjamin , Azabu Francis
Published: August 2021

Solid waste management is a societal problem both in developed and developing countries and studies have shown that most developing nations are struggling to find a lasting solution to this bane. The study therefore, sought to assess the waste management practices in Ghana using Subin Metropolis as a case study and offer some solutions to the challenges faced by resident and city authorities in managing the problem. Subin Metropolis a suburb of Kumasi, is considered as one of the highly-dense suburbs in terms of its human population and social activities.In this study, a set of structured questionnaires was administered to households selected randomly. The total number of households selected was based on statistics of the 2010 population census of one hundred and seventy-four thousand and four (174,004) inhabitants. with an annual growth rate of 4.8%, was used in projecting the number of inhabitants in the suburb for 2020 being the year under consideration as 253192, was adopted using the Slovin’s equation resulting in a sample size of four hundred (400). Data collected were analysed using SPSS and the results presented.Findings of the research reveal that despite the provision of dustbin by Subin sub metro authority and waste management companies, 32.25% of the residents use inappropriate storage receptacles including plastic bags to store their refuse temporarily in the house.8.75% of residents dispose of their waste through waste companies using dump truck, 76% of the waste generated are evacuated through paid labourer for onward transportation to the few waste storage and collecting points within the metropolis. If the wastes at the storage point are not evacuated on time can lead to serious health implications.Lack of access roads is a major hindrance to effective waste management in the community due to poor spatial planning. Inadequate information and education on waste management and alternative strategies on managing waste is also another limiting factor that contributed to the poor sanitary condition in the Metropolis.This paper recommends using a multifaceted approach in solving the waste management menace through awareness creation, community engagement, information sharing as well as sustainable waste management systems such as waste reduction and recycling of waste. The paper also recommends that the city authority create more access roads in the community to improve upon waste services delivery.
Peripheral Nerve Stimulation for the Treatment of Hemiplegic Shoulder Pain
Authors: Hasoon Jamal , Dalal Suhani , Berger Amnon A. , Orhurhu Vwaire , Kaye Alan D.
Published: August 2021

Hemiplegic shoulder pain (HSP) is a common comorbidity affecting stroke survivors. It can lead to chronic pain in a significant portion of patients. Prompt recognition and treatment may lead to improved outcomes, though it can be very challenging to treat. Peripheral nerve stimulation (PNS) has shown significant promise as a treatment modality for HSP. We present an interesting case of a patient with debilitating HSP that was unresponsive to a variety of medications and prior neuromodulation therapies. We report our experience utilizing the SPRINT PNS system and our outcomes treating a patient with refractory HSP.
ANALYSIS OF COLLISION ACCIDENTS IN MARITIME TRANSPORTATION BY FTA METHOD
Authors: TÖZ Ali , BÜBER Müge , KÖSEOĞLU Burak , ŞAKAR Cenk
Published: August 2021

The aim of this study is to determine the possible causes of collision accidents and identify the contribution of possibility on top events by using Fault Tree Analysis (FTA). A total of 62 collision accidents were considered between 2005 and 2020 and detailed technical data on marine accidents were provided from accident reports obtained by Marine Accident Investigation Branch (MAIB). The study found that most of the factors (E1/Misuse of navigational tools, E3/COLREG Rule-5 (Look-out)) that had the greatest effect on the collision were mainly due to the inadequacy to keep a safe navigation watch. For that reason, the findings of the study are very important in terms of determining the strategies to eliminate the risks for future accident prevention. For further research, it is recommended that consideration be given to a longer data period, including other navigational areas. In addition, alternative risk assessment methods should be applied considering other types of vessels for better comparisons.
Pollinators and Pollination
Authors: Ollerton Jeff
Published: August 2021

A unique and personal insight into the ecology and evolution of pollinators, their relationships with flowers, and their conservation in a rapidly changing world. The pollination of flowers by insects, birds and other animals is a fundamentally important ecological function that supports both the natural world and human society. Without pollinators to facilitate the sexual reproduction of plants, the world would be a biologically poorer place in which to live, there would be an impact on food security, and human health would suffer. Written by one of the world’s leading pollination ecologists, this book provides an introduction to what pollinators are, how their interactions with flowers have evolved, and the fundamental ecology of these relationships. It explores the pollination of wild and agricultural plants in a variety of habitats and contexts, including urban, rural and agricultural environments. The author also provides practical advice on how individuals and organisations can study, and support, pollinators. As well as covering the natural history of pollinators and flowers, the author discusses their cultural importance, and the ways in which pollinator conservation has been portrayed from a political perspective. The book draws on field work experiences in South America, Africa, Australia, the Canary Islands and the UK. For over 30 years the author has spent his career researching how plants and pollinators evolve relationships, how these interactions function ecologically, their importance for society, and how we can conserve them in a rapidly changing world. This book offers a unique and personal insight into the science of pollinators and pollination, aimed at anyone who is interested in understanding these fascinating and crucial ecological interactions.
Human, Nature
Authors: Carter Ian
Published: August 2021

What does it mean to be a part of—rather than apart from—nature? This book is about how we interact with wildlife and the ways in which this can make our lives richer and more fulfilling. But it also explores the conflicts and contradictions inevitable in a world that is now so completely dominated by our own species. Interest in wildlife and wild places, and their profound effects on human wellbeing, have increased sharply as we face up to the ongoing biodiversity extinction crisis and reassess our priorities following a global pandemic. Ian Carter, lifelong naturalist and a former bird specialist at Natural England, sets out to uncover the intricacies of the relationship between humans and nature. In a direct, down-to-earth style he explains some of the key practical, ethical and philosophical problems we must navigate as we seek to reconnect with nature. This wide-ranging and infectiously personal account does not shy away from controversial subjects—such as how we handle invasive species, reintroductions, culling or dog ownership—and reveals in stark terms that properly addressing our connection to the natural world is an imperative, not a luxury. Short, pithy chapters make this book ideal for dipping into. Meanwhile, it builds into a compelling whole as the story moves from considering the wildlife close to home through to conflicts and, finally, the joy and sense of escape that can be had in the wildest corners of our landscapes, where there is still so much to discover.
Raptor Prey Remains
Authors: Drewitt Ed
Published: August 2021

Are you curious about the remains of an animal you have found? This compilation of the most likely found body parts of animals eaten by raptors will help you identify your discovery. Including over 100 species of bird and mammal prey of raptors such as sparrowhawks, peregrines and hen harriers, this photographic guide highlights the common feathers, fur and other body parts found at raptor nests, roosts, plucking posts and other opportunistic spots. Discovering what raptors eat is an important part of confirming their feeding ecology and how this might change over time, vary on a local level or in response to changing prey populations, as well as dispelling myths and assumptions about what certain raptor species eat. Diet studies are vital for the conservation of raptor species; the more we know about what they need for survival the more we can predict and plan long-term for the protection and survival of raptors that may be vulnerable and in decline. This is the first book to show in detail the actual parts of a bird, mammal or other animal that you are likely to find in a garden, woodland or beneath a raptor roost. As more people take an interest in raptors and watch species such as peregrines via webcams and through watch groups, there is greater opportunity for finding prey remains. This book provides the first and most important step in identifying a prey species.
Bat Roosts in Rock
Authors:   Bat Rock Habitat Key
Published: August 2021

This guide provides descriptions of when the species of bats resident in British and Ireland use natural and man-made rock habitats, how they use them, and the environment each species occupies within them. This data is part of the Bat Rock Habitat Key project. For the first time it brings together a) historic scientific investigations; b) useful photographic accounts; and c) open access biological records, in a practical narrative. The text encompasses: - Descriptions of the features that a climber, caver or professional ecologist might encounter on and in natural and man-made rock habitats, and within which bats have been recorded roosting. - Recording criteria for both the physical and environmental attributes of different features and situations. - The identification of suitability thresholds against which the recorded information can be compared to assess the likelihood that a specific feature might be exploited by a specific bat species. - Some suggestions for how to avoid mistakes and misery when performing a survey. The idea is that the use of the book will generate standardised biological records that will feed into the online database at www.batrockhabitatkey.co.uk. This data will be analysed to search for patterns that can increase the confidence in the suitability thresholds, build new roost features that deliver the environment each species really wants; their fundamental niche on each environmental gradient.
SPORT AS AN IMPORTANT FACTOR OF SOCIALIZATION AND A WAY TO MODIFY “TROUBLED” TEENAGERS BEHAVIOR
Authors: Gevorgyan Natalya
Published: August 2021

In sports activities, during the process of regulating the behavior of adolescents and teenagers, interpersonal and intergroup relationships are important as they contribute to transformation of deviant behavior. It is well known that people cannot evolve and exist outside of human society, communications and culture. This is where worldview and path of development lies. The psychological characteristics of teenagers with deviant behavior differ greatly. They require special individual approach, clear knowledge, skills, abilities and interpersonal relationships.
The problem of deviant behavior among teenagers remains one of the most difficult socioeconomic and socio-psychological problems that our society has faced. Although at present the state bodies as well as many international and national non-governmental organizations, including sports federations are interested in overcoming this problem, the problem of deviant behavior among teenagers is still actual.
Tecnologias Digitais e Educação Escolar:
Authors: Anecleto Úrsula Cunha
Published: August 2021

Este texto, de base teórico-analítica, objetiva refletir sobre as Tecnologias Digitais enquanto meios para a produção de conhecimento no campo da Educação, à luz da ecologia cognitiva. Apresenta, como recorte epistemológico, o caráter político-filosófico dessas tecnologias, a partir de um movimento de imbricação homem-máquina, no sentido de proporcionar espaços agentivos que possibilitem novos modos de conhecer no ambiente escolar. Como itinerário metodológico, parte da realização de uma revisão integrativa, tendo como corpus publicações intelectuais oriundas das ações dos subprojetos pertencentes ao Projeto de Pesquisa Tecnologias, (Multi)letramentos e Formação de Professores. Os dispositivos para a construção de informações são as ferramentas Cirrus, Tendências e Links, que compõem a interface online Voyant Tools. Como achados deste estudo, verificamos que existe sólida produção intelectual resultante das pesquisas, de caráter interventivo, realizadas pelos integrantes do Projeto, no período de 2018 e 2019, que ratificam a importância de constituição de novas configurações sociointerativas para a construção de conhecimento, de forma colaborativa.
Qualité de remplissage du partographe modifié de l’organisation mondiale de la santé dans les centres de santé de premier niveau de la commune II de Bamako, Mali
Authors: Doa SZ
Published: August 2021

Introduction : Le partographe est un outil indispensable à la surveillance du travail d’accouchement. L’objectif de ce travail était d’évaluer la qualité de remplissage du partographe modifié de l’organisation mondiale de la santé dans les maternités des centres de santé de premier niveau de la commune II de Bamako. Matériel et Méthodes : Nous avons réalisé une étude transversale rétrospective descriptive et analytique sur une période de douze mois allant du 1er mars 2018 au 28 février 2019. Elle a concerné tous les partographes des parturientes et accouchées admises dans ces centres pendant la période d’étude. Résultats : Cette étude a concerné 2027 partographes. Le remplissage des partographes a été effectué par les sages-femmes (95,26%), les infirmières obstétriciennes (2,92%) et les médecins (1,82%). La fréquence des partographes correctement remplis était de 66,93%. Il y avait une relation entre le niveau de qualification des prestataires et le respect des normes de remplissage (Khi²=37,456 ; P=0,000). Les principales difficultés de remplissage ont concerné les contractions utérines (25,7%), les heures d’examen (18,3%) et le modelage de la tête fœtale (12,5%). La non maitrise du nouveau partographe (47,5%) et la surcharge du travail (29,8%) ont été les principales raisons évoquées. Conclusion : Correctement rempli, le partographe contribue à la réduction de la morbidité et de la mortalité maternelle et périnatale. L’amélioration de la qualité de son remplissage nécessite la formation, la sensibilisation et le suivi des prestataires impliqués dans la prise en charge de l’accouchement.

Mots clés : Maternités, Premier niveau, Partographe, Qualité, Remplissage
Evaluation des connaissances, attitudes et pratiques des hommes du district sanitaire de Diéma face à l’éclampsie
Authors: Diallo B
Published: August 2021

Introduction : L’éclampsie est un syndrome paroxystique de la pré éclampsie est une situation obstétricale grave et responsable d’une mortalité et d’une morbidité maternelle et fœtal importante (6 à 10%) particulièrement dans les pays en voie de développement. L’objectif général était d’évaluer les connaissances, attitudes et pratiques des Hommes du district sanitaire de Diéma face à l’éclampsie du 07 Octobre au 07 décembre 2019. Méthodes : La présente étude sur les connaissances, attitudes et pratiques face à l’éclampsie a été réalisé dans le district sanitaire de Diéma dont la cible était les Hommes (homme et femme) âge de 14 à 65 ans. La taille de l’échantillon a été estimé à 225 individus. La technique de sondage à trois degrés a été utilisée pour mener cette étude. Le questionnaire était l’outil de collecte. Résultats : La pensée la plus récurrente qui venait immédiatement devant une femme enceinte convulsant était de l’ensorcellement avec 34.2%. La majorité des enquêtés de notre étude soit 64,9% étude n’avait jamais entendu parler de l’éclampsie. Les Hommes participent beaucoup dans la prise en charge de cette pathologie. Conclusion : Cette étude montre à suffisance la méconnaissance de cette pathologie par la population. Cette étude montre également une insuffisance dans la communication interpersonnelle et de la causerie éducative sur l’éclampsie dans nos structures de santé. Ainsi il est primordial de renforcer la sensibilisation et la communication interpersonnelle des Hommes sur l’éclampsie pour une meilleure amélioration de la santé mère- enfants.

MOTS CLES : Connaissances, Attitudes, Pratiques, Homme, Eclampsie
Etude des facteurs de la satisfaction des usagers du Service de Chirurgie Générale du CHU Gabriel Touré à Bamako
Authors: Diallo B
Published: August 2021

Introduction : La satisfaction des usagers est l’un des critères de succès les plus importants et un atout majeur pour le développement d’une bonne relation entre un usager et le médecin. Elle est une composante importante de la qualité des soins. Le patient est considéré comme un client. L’objectif était d’étudier les facteurs influençant la satisfaction des usagers du service de chirurgie générale du CHU- Gabriel Touré. Matériel et méthodes : Nous avons mené une étude transversale descriptive. La méthode d’échantillonnage probabiliste et la technique de sondage systématique ont été utilisées pour sélectionner l’échantillon. L’étude a concerné 80 patients. Le questionnaire était l’outil de collecte des données et le consentement verbal a été obtenu. Résultats : Il en ressort que 55% des répondants sont de sexe féminin, soit un sexe ratio de 1,22 en faveur des femmes. La tranche d’âge la plus représentée était 30-44 ans avec 32,5% et une moyenne de 43,71± 15, 35 ans. Nous avons enquêté 62 patients hospitalisés et 18 vus en ambulatoire. Les mariés représentaient 73,8% des enquêtés. Le taux de satisfaction était de 82,50%. Il existait un lien significatif entre le statut matrimonial et la satisfaction globale des usagers p = 0,009 et entre la propreté de la salle et la satisfaction globale des usagers p= 0,038. Conclusion : La mesure de la satisfaction des patients est aujourd'hui une préoccupation générale de tous les établissements de santé. La mesure de la satisfaction des patients constitue une source d'informations pour l'amélioration de la qualité de soins.

Mots clés : satisfaction, facteur, usager, chirurgie, Hôpital, Bamako.