bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects of lipid-lowering agents on plasma lipid profile and apolipoprotein B in patients with type 2 diabetes mellitus
Authors: Idowu A.O. , Ebesunun M.O. , Adekoya A.O. , Taiwo F. , Adesegun O.A. , Idowu A.A. , Uka A. , Amusan O.O. , Ehioghae O. , Amballi A.A.
Published: April 2021

Objectives: Type 2 Diabetes Mellitus (T2DM) accounts for about 90% of all cases of Diabetes Mellitus. Dyslipidaemia has been demonstrated to form a synergy with T2DM as risk factors for cardiovascular events. This study aimed to determine the plasma levels of Lipids and Apolipoprotein B-100 among Type 2 Diabetic patients, assess the effects of Lipid Lowering agents, and to study the relationship, if any, between these lipid parameters and glycemic control.Methods: One hundred and fifty participants consisting of fifty T2DM patients on a lipid-lowering agent, fifty newly diagnosed T2DM patients who are drug naïve (not on any anti-diabetic agent) and fifty apparently healthy non-diabetic controls were recruited for this study. Fasting blood samples were collected from all study participants for determination of Total Cholesterol (TC), LDL-C, Triglycerides(TG), High-Density Lipoprotein (HDL-C) and Apo B-100.

Results: The results showed significant increases in plasma TC, LDL-C, TG and Apo B-100 with a remarkable reduction in plasma HDL-C level in the Type 2 Diabetic drug naïve group compared with the treatment and control groups. There was a significant positive  correlation observed between serum Apo B-100 and level of glycaemia in the T2DM drug naïve group.Conclusion: This study further confirms the therapeutic benefits of lipid-lowering agents in reducing Apo B-100 among T2DM patients. Furthermore, maintaining good glycaemic control reduces the risk for the development of dyslipidaemia.

Keywords: T2DM, Dyslipidaemia, Cardiovascular Diseases, Apolipoprotein B-100, Nigeria.
Evaluation of cytoplasmic genetic effects for production and reproduction traits in Afrikaner cattle
Authors: Neser FWC , Van Wyk JB , Scholtz MM
Published: April 2021

The influence of cytoplasmic effects on weaning weight (WW) and age at first calving (AFC) were investigated in the South African Afrikaner beef breed. A total of 14 535 AFC records (1974 - 2008) and 68 152 WW records (1974 - 2011) were used in the estimation of variance components. All cows were assigned to different damlines, using the pedigree information available. The model used for WW include direct additive, maternal additive, the covariance between the animal-, permanent maternal environmental-, herd-year-season x sire- and damline effects, while the simplest model which include only direct- and damline effects were used for AFC. The contribution of the cytoplasmic effects to the total variance was negligible (less than 0.5%) for both traits. These results suggest that cytoplasmic effects can be ignored in genetic evaluations of Afrikaner cattle for the traits investigated.Keywords: Age at first calving, beef cattle, damline, weaning weight
The influence of the inside diameter of the coring probe on the chemical composition of lucerne hay samples
Authors: Van Zyl M , Scholtz GDJ , Van der Merwe HJ , Meeske R
Published: April 2021

The obtaining of a representative sample is crucial for the application of an accurate and uniform lucerne hay grading system in South Africa. There is currently limited data available on the effect of the inside diameter of the coring probe on the chemical composition of the lucerne hay samples. A study was therefore undertaken to determine the influence of the inside diameter of a coring probe on the chemical composition of unground lucerne hay samples using the Near Infrared Reflectance Spectroscopy (NIRS) technique. Ten lucerne bales (total 40), randomly chosen from four different grades (Prime, Grade 1, 2 and 3 according to the National Lucerne Trust quality and grading system), were sampled with both a large probe (35 mm inside diameter and 520 mm long) and a small probe (12 mm inside diameter and 450 mm long). The samples with each probe were taken at approximately the same location in the bale. The samples were analysed with the NIRS for crude protein (CP), acid detergent fibre (ADF), neutral detergent fibre (NDF), ash and lignin. The model to calculate the new lucerne quality index (NLQI) from the ADF, ash and lignin, according to the National Lucerne Trust quality and grading scheme was used. Regression analysis revealed a significant relationship (r2) between the results of the large and small probe namely CP = 0.77, ADF = 0.95, NDF = 0.94, ash = 0.92, lignin = 0.87 and NLQI = 0.97. Sampling of lucerne hay with a large and small probe was irrelevant as resulted in similar chemical composition results.Keywords: Analysis grading, New Lucerne Quality Index, NIRS, quality, sampling
Relevance of the formal red meat classification system to the South African informal livestock sector
Authors: Sojl Z , Chikwanda D , Jaja IF , Mushonga B , Muchenje V
Published: April 2021

In 1992 the South African meat industry was deregulated and this led to the formation of the new Marketing of Agricultural Products Act, Act no. 47 of 1996. The Act made provisions for producers to sell animals to customers of their own choice at mutually agreed prices. Thus, producers in the informal sector took advantage of the free marketing system. The result was a substantial increase in the number of animals slaughtered in the informal sector. Unfortunately the requirements for animal identification are not always observed in this sector. Challenges faced by communal farmers which include the multipurpose roles of livestock, lack of slaughter facilities within reasonable distance and lack of access to market information make them less willing to sell their animals through the formal market. The formal market is characterised by meat inspection and carcass classification which scare away the communal farmers for fear of income loss through animal condemnation. The informal sector might not recognise the importance of formal carcass classification. There is need to direct research and development efforts to address marketing constraints faced by communal farmers, and to promote formal marketing of livestock for meat quality assurance and a fair return to the farmers. This review seeks to assess the relevance of formal classification of red meat carcasses to the informal sector, make recommendations on ways to ameliorate the undesirable effect of the classification system on the informal sector, and identify possible areas which need further research to develop the classification system in South Africa.Keywords: Communal farmers, marketing system, meat industry
Sources of variation in quality of South African beef: Case studies in relation to the red meat classification system
Authors: Strydom PE , Frylinck L , Van Heerden SM , Hope-Jones M , Hugo A , Webb EC , Moholisa E , Liebenberg BE , Sehoole OC
Published: April 2021

The South African classification system describes beef carcasses in regard to visual fat cover, conformation and age by dentition. Animal age provides a fairly accurate description of expected eating quality in regard to tenderness in an industry where other sources of variation in tenderness are limited. Since deregulation in the beef industry in the 90s many changes have occurred in all parts of the value chain. This paper presents a number of case studies that focussed on the sources of variation in meat quality, but in particular on sources of changes in meat tenderness over the past two decades. These sources include feeding regime, the use of beta agonists, post mortem ageing and electrical stimulation. In some studies these factors are integrated with age or interactions among two or more of these factors are investigated.Keywords: Age, beef, classification, dentition, grading
Fat quality of South African pigs with different carcass classification characteristics
Authors: Hugo A , Roodt E
Published: April 2021

The carcasses of South African pigs are classified into six groups (PORCUS) according to their calculated lean meat content and measured backfat thickness. Pigs with the highest lean meat content and lowest backfat thickness belong to the P group. Fat quality of backfat from 2107 pig carcasses, sampled within the different pork classification groups at a major South African pig abattoir, was evaluated to determine the relationship between carcass classification and backfat quality. Extracted fat was used to determine the iodine value of these samples. Significant differences in carcass characteristics and iodine value were observed between the classification groups. Improved fat quality, indicated by a lower iodine value, was associated with increased backfat thickness and decreased lean meat content. The P and O classification groups (with backfat thickness <17 mm) could not conform to international standards proposed for good technological quality backfat. The C, U and S groups (with backfat between 23 and >32 mm) possessed good technological quality backfat. Backfat from the R group had borderline fat quality. Correlation analyses were employed to acquire equations to describe relationships between iodine value and carcass classification data. The French classification system predicts fat quality by utilizing backfat thickness and lean meat content. It was proposed, through modification of the French system, that South African pig carcasses with a backfat thickness >17 mm and a lean meat content <67% would potentialy deliver good quality backfat. Results from this study indicate that carcass classification data may be used to improve the probability of selecting pig carcasses with good quality fat.Keywords: Backfat, fatty acid(s), iodine value, meat processing, South Africa, survey, swine
Effects of replacing marine fishmeal with graded levels of Tra Catfish by-product protein hydrolysate on the performance and meat quality of pigs
Authors: Thuy NT , Joseph M , Ha NC
Published: April 2021

A feeding trial was carried out to evaluate the effects of replacing fish meal (FM) with Tra Catfish (Pangasius hypophthalmus) by-product protein hydrolysate (TPH) on performance and carcass quality in pigs. Forty crossbred castrated (Yorkshire x Landrace) male pigs with an initial average bodyweight of 22.8 ± 1.5 kg were allocated to 40 individual pens in a randomized complete block design with eight replications. The pigs were fed a control diet (TPH0) with FM as sole protein supplement. In the experimental diets, 100% (TPH100), 75% (TPH75), 50% (TPH50) and 25% (TPH25) of the crude protein (CP) from FM was replaced by the CP from TPH. The results showed no significant differences in average daily feed intake (ADFI) in all treatments during the growing and finishing phases. However, daily weight gain (ADG) was higher in TPH75 (655 g/day) and TPH100 (663 g/day) than in TPH0 (639 g/day). Feed conversion ratio (FCR) was improved with higher inclusion of TPH in the diets. Carcass yield and dressing percentage were not affected by treatments, but abdominal fat and backfat thickness were higher and in the loin-eye area lower in TPH100 compared with TPH0. Polyunsaturated fatty acids (PUFA), ether extract (EE) contents and meat colour values a* (redness) in the longissimus dorsi muscle increased with TPH replacement level. Feed costs were 10% lower in TPH100 compared with TPH0. In conclusion, replacing FM with TPH improved the performance, but resulted in an increase in backfat thickness and fat content of meat. However, because of reduced feed costs, complete replacement of FM would still be profitable for pig producers in Vietnam.Keywords: Backfat thickness, longissimus dorsi muscle, fatty acid, Pangasius hypophthalmus
Pomegranate seed oil rich in conjugated linolenic acids reduces in vitro methane production
Authors: Maleki E. , Meng G.Y. , Faseleh Jahromi M. , Jorfi R. , Khoddami A. , Ebrahimi M.
Published: April 2021

The objective of this study was to determine the effect of pomegranate (Punica granatum L.) seed oil (PSO) on gas and methane (CH4) production, ruminal fermentation and microbial populations under in vitro conditions. Three treatments consisting of a control diet containing 10 mg tallow (CON); the control diet with 5 mg PSO + 5 mg tallow (MPSO) and the control diet containing 10 mg PSO (HPSO) were compared. Ten mg of the experimental fat/oil samples were inserted into a gas-tight 100 mL plastic syringe containing 30 mL of an incubation inoculum and 250 mg of a basic substrate of a hay/concentrate (1/1, w/w) mixture. In vitro gas production was recorded over 0, 2, 4, 6, 8, 10, 12 and 24 h of incubation. After 24 hours, incubation was stopped, and methane production, pH, volatile fatty acids (VFAs) and microbial counts were measured in the inoculant. Gas production at 4, 6, 8, 10, 12 and 24 h incubation, metabolizable energy and in vitro organic matter disappearance increased linearly and quadratically as level of PSO increased. Furthermore, the 10 mg PSO (HPSO) decreased CH4 production by 21.0% compared with the control (CON) group. There were no significant differences in total and individual VFA concentrations between different levels of PSO, except for butyric acid. After 24 h of incubation, methanogenesis decreased in the HPSO compared with the MPSO and CON treatments. In addition, total bacteria and protozoa counts increased with rising PSO levels, while population methanogenesis declined significantly. These results suggested that PSO could reduce methane emissions, which might be beneficial to nutrient utilization and growth in ruminants.
A socio-ecological system perspective on trade interactions within artisanal fisheries in coastal Kenya
Authors: Ndarathi John , Munga Cosmas , Hugé Jean , Dahdouh-Guebas Farid
Published: April 2021

Assessments of coastal artisanal fisheries are progressively adopting a social-ecological system (SES) approach as an effective means to accumulate knowledge and integrate findings on different aspects of the fisheries. Ostrom’s SES framework was used to guide assessment of interactions between and within the harvesting and supply-chain processes and the effect of external drivers, seasonal monsoons and tourism, on both processes in a coastal artisanal fishery system in Gazi Bay, Kenya. Specific analyses focused on seasonal catch composition, key resource user groups involved in the fish trade and the resource units traded by each user group. The snowball method was used to identify key resource user groups within the fishery sector, who were then interviewed using semi-structured questionnaires (n = 60). Additionally, existing annual shore-based catch assessment and monthly fish landings data for the years 2014 and 2015 were incorporated for analysis of artisanal catch properties (species composition and weight). Comparison of seasonal catch composition was carried out using sample-based rarefaction curves. Higher fish landings and higher species diversity were recorded during the North-East Monsoon season. Further, a simple fish harvesting-supply network comprising of six key resource user groups (i.e. hotels, fish processing companies, dealers, small-scale fish processors (mama karanga), fish mongers and fishers) was outlined. The tourism industry, through hotels, creates a high demand for fish coinciding with a higher catchability and supply during the calm North-East Monsoon season and consequently, dealers hire migrant fishermen to target pelagic fish. Evidence of interactions within and between different fishery sub-systems, as well as the effect of monsoon seasons and tourism on the exploitation and market dynamics of the multispecies fishery, highlight the need for comprehensive management plans to strengthen self-organization among resource users and to increase adaptive capacity within the fishery system.
Movement patterns and growth rate of cavebass Dinoperca petersi (Pisces: Dinopercidae) in the iSimangaliso Marine Protected Area, South Africa
Authors: Mann Bruce Q. , Jordaan Gareth L. , Daly Ryan
Published: April 2021

Dinoperca petersi is a relatively common fish species caught in the line-fishery in KwaZulu-Natal (KZN), South Africa. Yet, little is known about the biology and ecology of this species. Movement patterns and growth rate of this species were studied based on data obtained from a long-term tag-recapture study conducted in the iSimangaliso Marine Protected Area in northern KZN between 2001-2019. Results showed that D. petersi is a highly resident species with a linear home-range size of 290-405 m. While most fish showed high site fidelity, 8.8 % of the tagged fish showed wider ranging movements of 2.4-90 km. However, only 5 fish showed movements out of no-take zones into adjacent exploited areas, suggesting limited adult spillover. Growth rate of tagged fish was found to be reasonably slow compared to other sympatric predatory reef fish with an average growth rate of 61.76 mm y–1 for smaller fish (gα = 300) and 9.58 mm y–1 for larger fish (gβ = 550). Based on these life history characteristics, options for the future conservation and management of this species are discussed.
Conservation of cultural heritage for community socio-economic prosperity: The case of Lamu East and West Sub-Counties, Lamu County, Kenya
Authors: Bunu Salim M. , Ong'ayo Annie H. , Shauri Halimu S.
Published: April 2021

Worldwide, cultural heritage has become both an element and a tool for achieving socio-economic prosperity.This study assessed the contribution of conservation of cultural heritage as a resource for the development of Lamu County. A descriptive survey design was used to conduct the study. Proportionate and systematic random sampling procedures were used to sample key informants and households selected from a sampling frame obtained from Lamu West and East Sub-Counties. An interview schedule and a semi-structured questionnaire were used to collect data from key informants and households respectively. Data were analysed using descriptive statistics and narratives. The results revealed that cultural heritage conservation contributes to job creation both directly and indirectly. However, cultural barriers contributed to observed exclusivity in benefitting from income generated from tangible and non-tangible activities. Revenue gains from the cultural heritage are also limited by the poor state of sites such as Pate and Ishakani ruins. The study recommends development and implementation of training programmes in cultural heritage conservation activities to ensure the community is educated and empowered to utilize cultural heritage for socio-economic development. The Government should also institute proper revenue sharing mechanisms to enhance socio-economic development of the Lamu County community.
Valuation of harvested goods in Mida Creek with application of the TESSA approach
Authors: Olima Cecilia O. , Muoria Paul K. , Owuor Margaret A.
Published: April 2021

Mangroves are considered a highly productive blue forests resource providing services that are important to the community both locally and globally. In recent times there has been an increase in studies on valuation of ecosystem services provided by mangroves. However, there is need to provide a simplified approach to identify, assess and quantify ecosystem services. In this study the Toolkit for Ecosystem Services Site-based Assessment (TESSA) was used to assess the value of harvested goods provided by the mangroves of Mida Creek in the current state and under plausible alternative scenarios. Spatial methods (GIS) were used to collect data for the period 1985-2019, and household interviews were used to collect data on harvested goods. Descriptive statistics were used to summarize quantitative data. Results show that the estimated current annual value of harvested goods in Mida Creek is US$ 11.2 million. This value increased to US$ 14.3 million under the conservation scenario and reduced to US$ 10.9 million under the business as usual scenario (BAU). These findings add to the growing literature on ecosystem service valuation and the need to use site-specific non-modelling tools like TESSA.
DESIGN AND MANUFACTURING OF A TERRAIN ROBOT FOR MINING ASSISTANCE AND DATA ACQUISITION
Authors: HUU TOAN TRAN
Published: April 2021

The robot assistance in human’s activities of resource developing has been brought efficient applications, especially in the condition of severe and harmful environment. Inspired by the difficulties behind the above specification requirements as well as realizing the importance and applicable capacity of this field, our paper presents the development of a terrain robot for mining support and data collection. The robot has been designed through the analysis of kinematic and dynamic properties of the terrain robot. Based on the requirements of the robot’s power and the load support, the solution of mechanism, actuator for the robot have been drawn. As a contribution to terrain robotic field, we present an original prototype of Mining Assistance Terrain Robot (MATRob). During development of the MATRob, a basically control design has been developed to increase the ability of integration, and ensure real-time control performance besides a custom-built control panel for users. The robot’s efficiency has been evaluated through several simulation training tests on obstacle overcome, material determination, picture /video captures and data collection.
SEAMLESS ROAMING CONTEXT-AWARE IN REMOTE HEALTHCARE SYSTEM
Authors: MẪU DŨNG ONG
Published: April 2021

In the health-care system, parameters of patients such as Electroencephalogram (EEG), Electrocardiogram (ECG), Electromyogram (EMG), Glucose, Blood pressure, motion, etc. are monitored in real-time that assist doctors to timely detect and treat unexpected risks of patients. Thus, it is critical for collected sensor data seamlessly roaming between various types of wireless transmission networks such as Personal Area Network (PAN), Wireless Fidelity (WiFi), Long Term Evolution (LTE). Moreover, congestion carrier frequency between multiple close-by PANs can cause high packet drop rates and useless energy consumption of sensors. From above reasons, we proposed a protocol for PAN-gateway to integrate many wireless communication standards (typically ZigBee, WiFi, LTE) and an optimal control network algorithm for Quality of Service (QoS). Flows of sensor data are seamlessly transmitted through many wireless interface standards in order to achieved the best average data rate; sensor energy used effectively and fairness/priority between many users.
PERFORMANCE EVALUATION OF DATA TRANSPORT OVER DIFFERENT-NODE DENSITY OF ZIGBEE SENSOR NETWORK – AN OPNET SIMULATION STUDY
Authors: MẪU DŨNG ONG
Published: April 2021

In this paper, we analyze the performance of different node density of Wireless Sensor Network (WSN) operating under the IEEE Standard 802.15.4 in the beacon-enabled mode. The motivation for evaluating the beacon-enabled mode is due to its flexibility for WSN applications as compared to the non-beacon enabled mode. The analysis is based on an accurate OPNET simulation model which supports slotted Carrier Sense Multiple Access Mechanism with Collision Avoidance (CSMA/CA) mechanism and Guaranteed Time Slot (GTS). The performance of the slotted CSMA/CA sensor network is evaluated and analyzed for different network settings to understand the impact of the protocol attributes, including super-frame order (SO), beacon order (BO), data packet size and maximum back-off number. Through the simulation results, high SO provides better network throughput, otherwise results in lower average latency. We also found that the MAC overheads on small MAC Service Data Unit (MSDU) are more significant than the overheads on large MSDU. And the back-off mechanism results in longer delays when the network traffic is heavy.
THE ANALYSIS OF FACTORS AFFECTING THE AUTHORITY OF UNIVERSITY PROFESSORS: A CASE OF IRAN, THE ISLAMIC REPUBLIC OF
Authors: Ahmadi Abdulali , Moradi Ali
Published: April 2021

The method employed in this study was a descriptive correlation in which two validated researcher-made questionnaires were used to collect data. The population involved 1770 university professors in the academic year 2019-2020. From the population, 240 were randomly selected. The data was analyzed using SPSS 21 and Amos 21. Pearson correlation was used to decide the relationship between variables, one-way ANOVA to compare means, Cronbach alpha to determine reliability, and factor analysis was to check the research model and substantiate construct validity. As a result, professor authority was found to have a significant negative correlation with relative deprivation. In addition, the academic status, age, and marital status of professors turned out to exert significant positive effects on their authorities. Furthermore, the chi-square minimum discrepancy value (CMIN) was equal to 523.414, the root mean square error of approximation (RMSEA) was 0.049, the root mean square of the residuals (RMR) was equal to 0.090, the minimum discrepancy per degree of freedom (CMIN/DF) in the model was 1.562, the comparative fit index (CFI) was 0.925, and finally, the parsimonious comparative fit index (PCFI) equaled 0.820. Thus, the comparative and parsimonious indices calculated to evaluate the solidarity of the constructs demonstrated that the collected data can be considered as supporting the research validity.

JEL Classification Codes: I21, I23, I31, I32.
Numerical approximation of coupled 1D and 2D non-linear Burgers’ equations by employing Modified Quartic Hyperbolic B-spline Differential Quadrature Method
Authors: Kapoor Mamta , Joshi Varun
Published: April 2021

In this paper, the numerical solution of coupled 1D and coupled 2D Burgers' equation is provided with the appropriate initial and boundary conditions, by implementing "modified quartic Hyperbolic B-spline DQM". In present method, the required weighting coefficients are computed using modified quartic Hyperbolic B-spline as a basis function. These coupled 1D and coupled 2D Burgers' equations got transformed into the set of ordinary differential equations, tackled by SSPRK43 scheme. Efficiency of the scheme and exactness of the obtained numerical solutions is declared with the aid of 8 numerical examples. Numerical results obtained by modified quartic Hyperbolic B-spline are efficient and it is easy to implement
KEGIATAN BAKTI SOSIAL DONOR DARAH DI STKIP PGRI METRO ‘’BERBAGI INDAH MEMBAWA BERKAH’’
Authors: Hastuti Eka Fitri , Sulastri Arum , Santoso Joko
Published: April 2021

Tujuan dari kegiatan bakti sosial donor darah yang bertemakan berbagi itu indah dan membawa keberkahan ini adalah untuk membantu UTD-PMI Kota Metro dalam meningkatkan cadangan darah sehingga memenuhi kebutuhan darah di Kota Metro serta melakukan sosialisasi kegiatan donor darah di kampus STKIP PGRI Metro bagi masyarakat kampus dan disekitar kampus. Kegiatan ini dilaksanakan pada tanggal 8 Juli 2020 di kampus STKIP PGRI Metro. Kegiatan bakti sosial donor darah ini diikuti oleh 70 peserta yang berasal dari mahasiswa, dosen, BEM, Tenaga Kependidikan serta masyarakat umum. Berdasarkan jenis kelamin, peserta kegiatan ini didominasi oleh perempuan (38 Orang) dan sisanya laki-laki (32 Orang). Jumlah kantong darah yang dapat dikumpulkan selama kegiatan ini adalah 70 kantong darah. Kegiatan donor darah yang dikemas secara menarik, publikasi dan melibatkan organisasi/ lembaga dapat meningkatkan tingkat partisipasi masyarakat.
Low voltage grid connected three-phase inverter control with hybrid neuro-fuzzy
Authors:   Research team energetic system and efficiency, Alioune Diop University of Bambey, El hadji Mbaye Ndiaye , Alphousseyni Ndiaye , Mactar Faye ,   Laboratory of Water, Energy, Environment and Industrial Processes, ESP, S-10700, Dakar-Fann, Senegal.
Published: April 2021

In this paper, an Adaptive Neuro Fuzzy Inference System (ANFIS) and Modified Proportional Integral Derivate (MPID) are used for respectively DC-link voltage regulation and grid currents regulation for grid connected three-phase inverter. The main purpose of this work is to reduce the fluctuation on DC-link voltage and the Total Harmonic Distortion (THD) on the injected currents. Indeed, the use of Proportional-Integral (PI) controller cannot achieve these objectives due to their disturbances sensitivity problem and limited regulation bandwidth. To avoid these problems, an ANFIS regulator has been designed. Results show that ANFIS has a very short response time (Rt) 0.097 s with no overshoot (D).
Assessment of different sands potentiality to formulate an effective thermal energy storage material (TESM)
Authors:   WASCAL Doctoral Research Program-Climate Change and Energy, Université Abdou Moumouni, Niamey, Niger, Boubou Bagré , Muritala Ibrahim Kolawole , Boukar Makinta , Daho Tizane ,   Institute of Low-Carbon Industrial Processes, German Aerospace Center (DLR) Zittau, Germany,, Nebié Jacques , Rabani Adamou , BERE Antoine ,   Laboratoire de Physique et de Chimie de l’Environnement, Université Joseph KI-ZERBO
Published: April 2021

This paper presents a review of solid particles size effect on thermocline storage performance for Concentrating Solar Power (CSP) storage systems. After an overview on the different process to store thermal energy we found that a particle size of 2cm diameter is better to achieve a good sensible heat storage performance within a system call dual-medium thermocline (DMT). The thermal storage potentiality of different sands from Burkina Faso have been carry out to look at the possibility to make a filler material with 2cm diameter. However, two different sands (mining dune and river sand) properties have been assessed. The density of the two samples is more than 2650kg.𝑚−3 with low mass losses at 700 ℃ without any agglomeration at 900 ℃ and 1000℃. This indicates that the mining sand samples from Bobo Dioulasso and Dune sand from Sahel region in Burkina (Oursi) have the potentials to be used to develop an effective thermal energy storage material or to store thermal energy at high temperature.
Évaluation de la dose aux patients lors de l’examen du thorax de face à Abidjan, Côte d’Ivoire
Authors:   Laboratoire des Sciences de la Matière de l’Environnement et de l’Énergie Solaire (LASMES), Université Félix Houphouët Boigny, Côte d’Ivoire, Konaté Issa , Kezo P. Claude ,   Université Jean Lorougnon Guédé de Daloa, UFR Environnement, Côte d’Ivoire
Published: April 2021

Our study aims to evaluate medical practices in order to reduce patient doses for frontal examination of the thorax in postero-anterior view. Thus, in five (5) radiological rooms of five (5) most frequented hospitals in Abidjan, thirty (30) patients per medical center, meaning a total of one hundred and fifty (150) patients, providing chest examination reports were followed. Using a DAP- meter consisting of an ionization chamber attached to the outlet of the tube and an electrometer, the dose in air (Dair) was measured. Then by calculating the entry dose (De) for each patient was determined. Thus, from the statistical method of the 75th percentile we determine the level of diagnostic references (DRL) in each room as well as in all the rooms of our study. The inlet dose averages (Dem) in each room and in all rooms were calculated. The couples (NRD, Dem) per room expressed in mGy (0.252, 0.226), (0.249, 0.213), (0.164, 0.159), (0.128, 0.117) and (0.234, 0.211) respectively at the CHU of Cocody, CHU of Yopougon, HMA, ICA and PISAM. By comparing the NRD value of De to that of Dem in each radiological room, we found Dem values lower than the NRD. This indicates that the doses are optimized in the rooms of our study, likewise, for all the rooms in Abidjan (0.220, 0.177). However, the average values of the voltage 104.04 kV and the load 4.55 mAs tell us that efforts can be made in the rooms of our study, increasing the voltage and reducing the load, to avoid unneeded doses of X-rays.
Braulino Caetano dos Santos, Doutor Honoris Causa pela Unimontes: o reconhecimento de um saber que vem das Comunidades
Authors: Rodrigues Luciene
Published: April 2021

A Resolução Nº 015 do CONSU/2019 da Universidade Estadual de Montes Claros – Unimontes concedeu o título de Doutor Honoris causa ao Ambientalista Braulino Caetano dos Santos. A Reitora em Exercício e Presidente em Exercício do CONSELHO UNIVERSITÁRIO (CONSU) da Universidade Estadual de Montes Claros (Unimontes), Professora ILVA RUAS ABREU, no uso das atribuições, e considerando: o disposto no inciso IV do artigo 167 e no artigo 168 e parágrafos do Regimento Geral; a sua memorável trajetória como empreendedor social, camponês e ambientalista de visão integrada aos problemas dos biomas e ecossistemas brasileiros; a sua participação primordial, decisiva e inquestionável como co-fundador do Centro de Agricultura Alternativa (CAA), da Cooperativa Grande Sertão, da Rede Cerrado e de cinco Associações Locais no Norte de Minas; o inestimável e relevante trabalho voltado para a preservação do meio ambiente e desenvolvimento sustentável, reconhecido como “Guardião do Cerrado; a sua atuação na formulação da Política Nacional de Desenvolvimento Sustentável de Povos e Comunidades Tradicionais (Decreto 6040 de março de 2007), onde assumiu a representação como Geraizeiro dos Povos do Cerrado na Comissão Nacional; que devido a sua prática social, tornou-se objeto de estudo e pesquisa acadêmica em diversas Universidades, principalmente pelo seu engajamento junto a outros atores e pela sua contribuição e protagonismo; o reconhecimento pela sua contribuição na consolidação da agricultura alternativa no Norte do Estado de Minas Gerais; a aprovação do Conselho Universitário, em Sessão Plenária do dia 29 de maio de 2019, resolve: Art. 1º CONCEDER o título de Doutor Honoris causa ao Ambientalista Braulino Caetano dos Santos
Geografia e Arte
Authors: Silva Bisneto João Rodrigues  da
Published: April 2021

Resenha da obra "Geografia e Arte" organizada por Alessandro Dozena (2020).
Pequeno ensaio cartográfico sobre o uso de agrotóxicos no Brasil
Authors: Fernandes Átila Rabelo
Published: April 2021

Resenha da obra - Pequeno Ensaio Cartográfico Sobre o Uso de Agrotóxicos no Brasil (2016).
Being Māori and Pākehā: Methodology and Method in Exploring Cultural Hybridity
Authors: Grennell-Hawke Niki , Tudor Keith
Published: April 2021

This article addresses the first author’s experience of identifying as both Māori and Pākehā in Aotearoa New Zealand. Based on her own research using both kaupapa research theory and heuristic research method, and supervised by the second author, the article describes her negotiation of the experience of being a hybrid cultural subject and object, of belonging and not belonging. The article extends the practice and understanding of cross-cultural research on a number of levels: the intrapsychic (i.e., within the principal investigator herself), the interpersonal (i.e., between the researcher and supervisor), and the methodological (i.e., between an indigenous and a Western theory).
Perceived Stressors of Hospitalized Patients’ Family in Cardiac Care Unites: A Qualitative Content Analysis
Authors: Pourghane Parand , Rajab pour Nikfam Maryam , Ebadi Abbas
Published: April 2021

The present study attempts to justify the factors inducing stress in the families of patients hospitalized in cardiac intensive care units in the east of Guilan province in Iran. The study aims at gaining an accurate understanding on these stressors for appropriate planning directed at removing or decreasing these tension-inducing components. The present study is a qualitative study based upon a conventional content analysis approach. The study population was selected through purposive sampling (28 family members of cardiac patients), and the data were gathered through semi-structured interviews. Data analysis was performed as per the stages recommended by Graneheim and Lundman (2004). The strength and scientific accuracy of the study was also established. The study yielded three main themes and seven sub-themes: Heavy shadow of illness (fear of loneliness on the caring path, fear of disease, poor personal knowledge); Hesitation in the treatment (doubting the efficiency of technology, ungenial healthcare providers); and Economic storm (high cost of treatment, potential economic problems). The study results indicated that patients’ families underwent stress in various areas, pointing to the need for providing adequate training and information on the disease to family members and caregivers, as well as the sympathy of healthcare providers on the treatment path for reducing the disease-associated tensions suffered by hospitalized patients’ families.
Dealing with Un(Expected) Ethical Dilemma: Experience from the Field
Authors: Othman Zaleha , Abdul Hamid Fathilatul Zakimi
Published: April 2021

Despite the growing interest in qualitative research and discussion of ethics, there has been little focus in the literature on the specific ethical dilemmas faced by researchers. In this paper, we share our fieldwork experiences regarding the ethical dilemmas that we encountered while doing research on a sensitive topic. Specifically, we share some of the ethical dilemmas, that is, concerning confidentiality, anonymity, legitimacy, controversial data, interpretation and off-the-record data, which emerged from the research. Most importantly, this paper shares ideas concerning how researchers might deal with ethical issues while preserving their integrity in the research process. Overall, this paper suggests approaches that qualitative researchers can adopt when doing research on sensitive topics. The paper contributes towards closing an existing gap in the literature, making visible the challenges frequently faced by qualitative researchers, that is, the vulnerability of researchers while preserving research integrity. Finally, this paper concludes with the suggestion that ethical dilemmas are part of the research process in doing qualitative research. However, it is suggested that future research should focus on ethical issues from the perspective of the researchers as well as the respondents.
Epistemological Ruptures: Flashback on Fieldwork Dilemmas While Doing Research on Friends at Home
Authors: Aguilar Israel
Published: April 2021

While doing fieldwork at home and/or with people who are familiar can yield new knowledge, researchers using ethnographic techniques ought to first assume the role of apprentice and enact vulnerability before they can represent findings that represent what really happened. Doing otherwise can tarnish relationships or jeopardize a study. The history of narrative within ethnographic research is discussed as an introduction to the author’s own personal narrative, which is in the form of a flashback that illustrates the journey he embarked on in 2010 when he initiated dissertation research in his hometown of south Texas. It is here where he tells about the epistemological ruptures he encountered that were originally understood as fieldwork dilemmas only. He provides a discussion section where he shares how he make use of the lessons learned from writing a flashback in his current position of professor within a principal preparation program.
Interpersonal Hardiness as a Critical Contributing Factor to Persistence among International Women in Doctoral Programs: A Trioethnographic Study
Authors: Williams-Shakespeare Eraldine , Bronteng Joyce , Alahmari Adhwaa
Published: April 2021

Women in PhD programs, in particular minority and international women, are especially at risk for drop-out (Castro, Garcia, Cavazos, & Castro, 2011; Haynes et al., 2012). This initial part of a longitudinal trioethnography captures the experiences of three international women in a doctoral program, highlighting the challenges, support systems, and coping mechanisms they engage with in the process of completing their degrees. Discoveries include the identification of “Interpersonal Hardiness” as the potential vehicle which could ensure our success.
Perceptions of Athletic Identity: A Case Study of a Niche Club Sport
Authors: Traugutt Alex , Augustin Jacob , Hazzaa Rammi
Published: April 2021

Research on athletic identity has been robust, however, there remains a gap in the literature regarding its perceived impact among collegiate club sport athletes. The subject of the present study was the niche sport of quidditch, a co-ed contact sport that is currently being played at over 200 colleges and universities across the United States. The primary purpose of this research was to investigate the perceptions of athletic identity among quidditch participants. In addition, it was also of interest to understand the degree to which spectators perceive the athletic identity of the participants and the game of quidditch in general. A two-phase, case study approach was utilized which featured both club quidditch team members and spectators at a regional club tournament as participants. Results from our thematic analysis yielded four primary themes; quidditch as a sport, participation for sport, participation for social interaction, and the Harry Potter effect. Concurrently, many spectators identified the quidditch participants as athletes although they were not as defiant in their identification of quidditch as a sport. These findings have notable implications for college students seeking to continue their athletic endeavors via an alternative sport experience and administrators who are seeking to expand their sport offerings.
How Involved Should They Be? Students with ASD in Postsecondary Settings and Their Family Members
Authors: Dallas Bryan , Ramisch Julie , Ashmore Alyssa
Published: April 2021

We investigated the need for family member involvement for students with Autism Spectrum Disorder (ASD) in postsecondary settings. We also looked at the perceived needed and fulfilled roles of family members and if family member involvement resulted in positive outcomes for postsecondary students with ASD. We surveyed 211 postsecondary Disability Support Professionals (DSPs) through the AHEAD organization. Using a mixed methods approach including inductive content analysis, results primarily indicated that there is a need for family members to be involved non-academically with students with ASD. We discuss roles that DSPs think family members should fulfill versus roles that DSPs think that family members are actually fulfilling. It is apparent that DSPs think family member involvement is important but must be balanced with increasing the independence of students with ASD while enrolled in school.
The Roles We Played: Exploring Intimacy in Research
Authors: Alley Kathleen
Published: April 2021

Intimate relationships can serve as catalysts impelling us to deeply interact with others, and, consequently helping us to develop a greater understanding of ourselves, those with whom we come into contact, and the wider world. This manuscript describes the challenges and constraints I faced when engaged in qualitative research with an intimate other. I borrow from Dr. Carolyn Ellis’ (2007) concept of relational ethics, which requires researchers to: (a) act from their hearts and minds, (b) acknowledge interpersonal bonds to others, and (c) take responsibility for actions and their consequences. Power is a part of intimate relationships, so exploring and discussing power issues is critical in developing a solid research design and research processes when we involve intimate others, not to mention a solid baseline for a familial relationship. In this manuscript, I share methods I developed to interrogate my own awareness of my situated power/authority.
Developing a Researcher Identity: Commonplace Books as Arts-Informed Reflective Process
Authors: Shuman Layal , Shabtay Abigail , McDonnell Maggie , Bourassa Nicole , El Muhammady Fauzanah
Published: April 2021

This article shares the processes of five emerging researchers as they trace their journeys in becoming researchers and examine their identities through the qualitative, arts-informed method of “commonplace book” creation. It positions commonplace books as “living document” that explore the ongoing processes of identity development we experience as novice scholars in the field of education. Using this article, we extend our artistic processes, inviting readers to join the conversation and reflect on why and how they engage in academic work, as well as the potential this method has for reflection, meaning-making and dissemination. We highlight the use of commonplace books as an arts-informed reflective method and a valuable performance in the journey of becoming/being academic researchers.
Stranded at Sea: Photographic Representations of the Rohingya in the 2015 Bay of Bengal Crisis
Authors: Yeung Jenny , Lenette Caroline
Published: April 2021

Visual representations can contribute to shaping how the general public perceives and engages with issues of forced migration. In 2015, thousands of Rohingya became stranded in the Bay of Bengal when smugglers abandoned them on unseaworthy boats and regional governments refused their disembarkation. Their ordeal made headlines across the globe and photographs documenting the crisis were widely disseminated. This paper applies visual-social semiotics to four of these photographs from an Agence France-Presse public exhibition. Our analysis suggests that the features in the photographs transcend the conventional “threat versus victim” dualism that typically characterizes such representations, to capture both the suffering and agency of the people at the centre of the crisis. This occurs in two ways: first, the Rohingya are depicted as proactive and enacting agency, and not just as powerless people in need of rescue. Second, the juxtaposition of mundane aspects with more dramatic frames offers a tangible pathway for viewers to connect with the circumstances of the people depicted. These visual representations were effective in triggering international concern and policy responses in 2015. However, such photographs’ longer-term potential for shifting public perceptions of displacement and forced migration—and by extension, effective policy measures—remains largely indeterminate.
Collecting Sufficient Evidence When Conducting a Case Study
Authors: Smith Pearl
Published: April 2021

Case study is a popular research design within the social sciences despite concerns of its credibility. Case studies provide an in-depth exploration of the unit of analysis (case). Hence, data triangulation is a key characteristic of the design whose purpose is to provide a thick, rich, and contextual description. Data for varied sources enhances credibility of the study. However, studies involving only one source of evidence exist in peer reviewed publications. This paper reviews the nature of case studies and discusses the importance of data triangulation. Further, three published case studies involving a single source of data are reviewed and suggestions of more appropriate designs are provided.
Past, Present, and Future: Narrative Reflections of a Novice Researcher
Authors: Laux Katie
Published: April 2021

In this article, I use an autoethnographical approach to explore how I identified my research interests of student voice, action research, and students as scientific researchers. My purpose was to identify some of the influences on my academic life. To achieve this goal, I used my writing as a method of both data collection and analysis combined with my parents’ interpretations of events to create narratives of my lived experiences. This process allowed me to make sense of how my lived experiences shaped my decision to become a doctoral student and the choices I have made as a novice researcher.