bluuebunny/crossref_metadata_2025 huggingface dataset:
Numerical modelling of the pit wall stability while optimizing its boundaries to ensure the ore mining completeness
Authors: Sdvyzhkova Olena , Moldabayev Serik , Babets Dmytro , Bascetin Atac , Asylkhanova Gulnur , Nurmanova Assel , Prykhodko Vira
Published: June 2024

Purpose is to assess changes in the stress-strain state of walls along the whole periphery of a super-deep open pit while optimizing its current and final boundaries for the complete ore excavation. Methods. Finite element 3D analysis of stress-strain state (SSS) of the soil and rock mass relies upon the models varying in their scales. Macrolevel model includes the full pit helping perform initial evaluation of its stability depending upon changes in the general wall slope along the pit periphery. Then, the macromodel is separated into sectoral models with smaller scales oriented radially in such a way to include potentially unstable wall areas. The sectoral models make it possible to show the complex bench line in more detail after the peripheries were optimized in terms of economic factor and simulate layered structure of the rock mass. Elastoplastic model of the medium as well as Mohr-Coulomb strength criterion has been implemented using RS3 (Rocscience) program codes. Findings. An indicator of wall strength (safety factor) distribution along the pit periphery has been identified; potential sliding surfaces within each of the separated open pit sectors have been localized based upon the shear strength reduction (SSR) procedure. Influence by the general wall slope as well as by the indicator of the ore excavation completeness on the stripping ratio has been demonstrated. Originality. For the first time, two-level modelling has shown difference in a safety factor depending upon a model scale and a reflection degree of the soil-rock mass structure. In the context of the actual mining and geological conditions of Kacharsky open pit, changes in the safety factor along the pit periphery have been identified depending on the general slope of the wall. Practical implications. Based upon the pit wall stability along the whole periphery, the possibility has been substantiated to optimize its design boundaries for the excavation of those amenable ore reserves, occurred near them, inclusive of ore, occurring in a bottom, which mining is impossible due to inaccessibility.
Ore dilution control when mining low-thickness ore bodies using a system of sublevel drifts
Authors: Mussin Aibek , Kydrashov Adilzhan , Asanova Zhanar , Abdrakhman Yerbolsyn , Ivadilinova Dina
Published: June 2024

Purpose. The research is aimed at substantiating the optimal parameters of blast-hole ore breaking to reduce the rock mass destruction when mining low-thickness vein deposits using the mining system of sublevel drifts (SD). The focus is on analyzing the impact of blasting on the out-contour rock mass during the blast-hole breaking process. Methods. The three-dimensional block model is constructed using rating classifications of rocks based on studying their strength properties and structural peculiarities. The inelastic deformation zones around the stoping extraction are determined by numerical analysis using the finite element method in 2D formulation. Experimental blasts are assessed by varying the blast-hole drilling scheme depending on the stability rating. Findings. During the experimental-industrial tests, rational blast-hole drilling schemes have been substantiated, contributing to maintaining the stability of the host rocks when mining low-thickness veins. Originality. Effective methods for reducing the ore dilution have been substantiated, which take into account not only the strength properties and structural peculiarities of rocks, but also their seismic impact from blasting on the out-contour rock mass stability when mining low-thickness deposits using a system of sublevel drifts. Practical implications. Practical significance is in the possibility of minimizing the percentage of mineral dilution when mining low-thickness ore bodies using a system of sublevel drifts, which can significantly reduce the cost of mined minerals by reducing ore losses caused by the rock mass destruction during mining operations.
Rock bolt and frame support of mine workings with a compound cross-section: Collective refuge chambers for mine workers
Authors: Krukovskyi Oleksandr , Krukovska Viktoriia , Bulich Yurii , Demchenko Serhii , Konstantynova Iryna
Published: June 2024

Purpose is to study the influence of mining and geological conditions on the time-dependent stability of the collective refuge chamber for mine workers with the adjacent mine workings and develop support schemes for different conditions of construction of such mine workings. Methods. Numerical modelling methods of the connected processes of elastoplastic deformation of gas-bearing rocks and gas filtration within the area disturbed during mining operations were used to study stability of mine workings with a compound cross-section, i.e. the collective refuge chambers and its adjacent extraction gallery. The model was based on fundamental principles of solid mechanics and filtration theory. The problem was solved using a finite element method. Findings. A classification of the conditions for locating collective refuge chambers for mine workers according to the relative strength of the enclosing rocks was developed. Support schemes for the chamber and its adjacent mine working were elaborated. The schemes include basic support and provide for its strengthening with rock bolts located in the roof of the mine working and chamber, or in their walls. The compliance of these support schemes with the developed classification of location conditions was determined. A numerical study of the time-dependent stability of the chamber and its adjacent mine working, while applying the recommended support scheme, was performed. It is shown that the strengthening of rock bolting schemes reduces the multicomponent stress field and the area of the zone of inelastic deformations, forms a rock-bolt overlap in the roof of the mine workings and chambers, which helps increase their stability under the complicated mining and geological conditions. Originality. Dependence of the changes within the area of a zone of inelastic deformations around the chamber with its adjacent mine working on the relative strength of the enclosing rocks was identified; time-dependent changes within the area of the zone of inelastic deformations, when using different support types, were specified. Practical implications. Support schemes for collective rescue chambers for mine workers in terms of different construction conditions were developed along with the procedure of their selection for specific mining and geological conditions. The results of the study provide theoretical substantiation and scientific guidelines for the selection of supports for collective refuge chambers adjacent to the mine working.
Geology and characteristics of petrographic rocks in the region of Trepça, Kosovo
Authors: Shala Astrit , Fejza Islam
Published: June 2024

Purpose. The purpose of this paper is to accomplish a thorough identification of rock types occurring within the Mitrovica region by describing in detail all encountered varieties. The authors aim to determine the discontinuity or continuity of all inter-formational boundaries, crucial for accurate delineation on the ground and complete reflection on a 1:25000 scale map. Additionally, the objective is to identify the nature of contact between rock types and provide a detailed their description. Methods. Field exploration in the Mitrovica region was conducted for several months. Rock identification involved detailed sampling and petrographic analysis, including thin section preparation of magmatic rocks. The method included sample preparation, polarized light source interactions with minerals and observation of optical properties. Key properties observed are birefringence, interference colors, extinction angles, identification and analysis. Findings. Based on the study of stratigraphic units and geological descriptions of mineral outcrop areas, various types of rocks through petrographic microscope preparation, as well as chemical and geochemical analyses, have been differentiated. The Mitrovica area encompasses the following lithostratigraphic units: harzburgite, gabbro, diabase, metasandstone, sandstone, quartzite and grainstone with calcium (Aeolisaccus sp.; Bioclastic grainstone with dacycladal algae and small milliolides; Salpin-goporella sp.). Originality. The originality of the research lies in employing an optical microscope for the precise identification of rocks. Through the re-search carried out in the study area, we obtained a comprehensive petrographic description of mineral composition, texture, and mineralization, facilitating the assessment of the area exploitation potential. Practical implications. The petrographic exploration yielded the conclusion that the Pb-Zn mineralization is present in the study area, which is a sig-nificant finding for the advancement of the mining sector and the local community, provided that environmental preservation measures are upheld and responsible methods of area exploitation are implemented.
Rationale and modeling of technology for complex bottom-hole zone de-stressing of gas-dynamically active rock mass
Authors: Symanovych Hennadii , Lisovytska Iryna , Odnovol Mykola , Ahaiev Ruslan , Poimanov Serhii
Published: June 2024

Purpose. The research aims to substantiate the geological principles and peculiarities of modeling complex de-stressing of a stressed bottom-hole mass during the construction of mine workings at depths of more than 1000 m. Methods. A comprehensive research methodology is proposed, which consists of conducting a computational experiment for calculating a complex de-stressing scheme and analyzing the stress-strain state (SSS) of the bottom-hole mass in the most informative mine working cross-sections, conducting experimental studies on the effectiveness of the method using the developed methodology for observing rock pressure manifestations and estimating energy consumption on the tunneling face rock destruction. Findings. A combination of two methods for de-stressing a rock mass adjacent to the tunneling face using advance slots has been substantiated. A geomechanical model has been created that takes into account the specifics of the proposed method. The stress-strain state of the rock mass adjacent to the tunneling face has been calculated in a series of cross-sections and longitudinal section of mine working. Originality. Three geotechnological principles of simultaneous de-stressing of both rocks adjacent to the face and rocks within the mass along the mine working route has been formulated and elaborated, embodied in the construction of a geomechanical model of complex adjacent rock mass de-stressing. Based on the obtained stress-strain state, five positions of have been developed for complex consideration of changes in the distribution fields of determining stress components. The methodological principle for assessing energy consumption for rock destruction has been substantiated, and an evidence base has been created to confirm the advantages of the proposed mine working construction technology at depths above 1000 m in a gas-dynamically active rock mass. Practical implications. The method for complex de-stressing the rock mass adjacent to the tunneling face, using pre-drilled wells and de-stressing slots, is proposed. Experimental studies confirm the proposed method feasibility in three directions for safe and resource-saving construction of mine workings in a gas-dynamically active rock mass at great depths. Calculations have proven that energy consumption for bottom-hole rock destruction has decreased in the range of 15-26%.
Utilizing well-reservoir pseudo-connections for multi-stage hydraulic fracturing modeling in tight gas saturated formations
Authors: Lukin Oleh , Kondrat Oleksandr
Published: June 2024

Purpose. Research is aimed at integrating multi-stage hydraulic fracturing in horizontal wells with hydrodynamic simulation as a mandatory part of planning the mining of any shale oil or gas reservoir. Methods. Geological and hydrodynamic reservoir modeling is part of the research. The properties and geometries of the hydraulic fracture network and its representation in the dynamic reservoir model were assessed. The comparative characterization was carried out based on the two methods of fracture modeling: cell dimension reduction for explicit fracture modeling (LGR – local grid refinement) and implicit fracture modeling method, presented in this paper, with additional pseudo-connections between well and reservoir. Findings. A hydrodynamic model for low-permeable reservoir, produced by horizontal well, hydraulically fractured with 5 stages, has been generated. This model is calibrated to the production history and flowing bottom hole pressure by applying two methods of fracture modeling. Modeling results show that it is possible to replicate historical well production by using both methods. However, the proposed method with pseudo connections has several advantages compared to the generally accepted, local grid refinement (LGR) method. Originality. For the first time, a system of pseudo connections between well and reservoir was constructed to model a multi-stage hydraulic fracturing for a hydrodynamic model of tight reservoir. Hydrodynamic simulation results were refined and calibrated to the history of hydrocarbon production and flowing bottom hole pressure data using the pseudo-connections and LGR methods. The similarity of the results by applying LGR and pseudo-connections methods was revealed. Practical implications. The use of pseudo connections for hydraulic fracturing modeling can reduce simulation run time for cases where multi-stage hydraulic fracturing has already been carried out or is planned in the future. Additionally, the use of this method allows testing a larger number of realizations and scenarios, including hydraulic fracturing design (number of stages, size and conductivity of resulted fracture systems, fracture orientation, etc.), well placement and fracture growth relative to well trajectory. Also, there is no need to rebuild a model every time for each realization, as is the case with the LGR method.
Dualistic effect of the deformation of protective structures made of broken rock in mine workings under static load
Authors: Chepiga Daria , Podkopaiev Serhii , Gogo Volodymyr , Shashenko Oleksandr , Skobenko Oleksandr , Demchenko Oleksandr , Podkopayev Yevgen
Published: June 2024

Purpose is to reveal physical essence of the dualistic (double) nature of deformation effects and their influence on the mechanical properties of protective structures made of broken rock while unloading coal-bearing mass to ensure stability of side rocks and operational conditions of the development mine working within the working areas of coal mines. Methods. The deformation properties of protective structures made of broken rock was modeled on experimental samples during their static load in terms of uniaxial compression with the possibility of lateral expansion of the original material or its compressive stress. Findings. A dualistic effect of deformations for the conditions of uniaxial compression of protective structures was revealed. Under the effect, a complex transformation of volume and shape occurs in the structures caused by the process of relative changes in the backfill material volume. The observed phenomenon occurs within the range of 0.12 ≤δV ≤ 0.32 and the values of the compaction coefficient of broken rock being 1.13≤k con. ≤ 1.47, depending on the granulometric composition of the source material and its bulk density. It was established that under conditions when broken rock is compressed, there is an effect of forming the bearing capacity of protective structures, which is observed when a relative change in the volume of backfill material is 0.14 ≤ δV ≤ 0.38, and its compaction factor reaches 1.16 ≤ kcon. ≤ 1.59. Depending on the homogeneity degree of the backfill material of protective structures, when comparing the values of kcon., a dualistic (double) effect is manifested in the difference of deformation characteristics of broken rock under uniaxial and compressive stress, reaching two or more times. Originality. A regularity was established that determines the relationship between compaction factor kcon. of broken rock and a relative change in the volume (δV) of backfill material, which makes it possible to evaluate bearing capacity of protective structures, being under static load in a stress-strain state. Practical implications. The research results can be used to substantiate the selection of a method to protect development mine working with flexible supports made of broken rock. To clarify the assessment of bearing capacity of such structures, it is advisable to carry out specific field studies in mine conditions.
Geo-mechanical classification of the Ighrem Aousser rock mass mining site of the Touissit Mining Company
Authors: Hossayni Khalid , Lahmili Abdelaziz
Published: June 2024

Purpose. The paper aims to classify the rock mass of the Ighrem Aousser (I/A) mine and analyze its fracturing to determine the appropriate excavation supports. Methods. The study begins with a geo-mechanical classification of the mass using widely used methods: Rock Quality Designation (RQD), Rock Mass Rating (RMR), Q-Barton, and Geological Strength Index (GSI). Fracturing surveys were then conducted to identify the main fracture families using DIPS software. Finally, UNWEDGE software was used to measure the support systems. Findings. The study provides a comprehensive geological study, including field observations, core drilling analysis, and structural analysis with DIPS software. Results indicate that the I/A mine rock mass is highly fractured and altered, as confirmed by mechanical tests at the Mohammadia School of Engineers' laboratory and empirical classifications. Based on these findings, appropriate support systems were identified using UNWEDGE software. Originality. This study provides a detailed classification and structural analysis of the I/A rock mass to propose and measure excavation supports. Integrated approach not only advances understanding of rock mass behavior, but also ensures optimized safety, stability, and productivity of mining operations, setting a new standard in sustainable mining development. Practical implications. In the mining industry, classifying rock masses and designing excavation supports enhances safety, increases site productivity by reducing contamination and lowering mining costs.
Effect of butyrine glycerides on the performance metrics and egg quality in laying pullets
Authors: Dey B , Goswami PK , Roddur QAH , Jahan N , Koly S , Asif AR
Published: June 2024

The chicken feed industry is very much interested in creating innovative solutions to address the issue of safer animal products due to the increasing customer demand and the prohibition on utilizing antibiotic growth boosters. Organic acids, especially butyric acid, when added to chicken diets, have several beneficial effects on health, productivity, and egg quality. These factors may lead to their substitution in animal production systems for antibiotics. The study was determined the effects of butyrine glycerides (BAG) supplementation on various aspects of egg production and egg quality in laying pullets. Three dietary treatments were randomly assigned to 48 NovoGen Brown laying pullets at 24 weeks of age. For eighteen weeks, the chickens were kept in a three-tiered pyramid-style cage. The chickens in the control group (T1) were fed a basal diet; in groups T2 and T3, the basal diet was supplemented with 0.033% and 0.066% butyrine glycerides, respectively. Throughout the 12 weeks trial, measurements were made of the quantity and weight of eggs laid, feed conversion, and egg quality. Dietary supplementation of butyrine glycerides contributed to a significantly (p<0.001) increased in the egg production, egg weight and egg mass in laying pullets. Similarly, egg quality parameters did not affect significantly except shell percentage, albumen index and Haugh unit at 28th weeks of supplementation. Taken altogether, it is said that BAG positively impacted the laying performances and egg quality of laying pullets.
Bangladesh Journal of Animal Science 53 (2): 31-39, 2024
A comprehensive survey on the present scenario and future production potentials of small-scale turkey farming in Bangladesh
Authors: Hossain MA , Dey B , Lahiry A , Ahmed T , Akter M , Ferdows J , Das SC
Published: June 2024

Turkey (Meleagris gallopavo) is one of the potential species of specialized fowls, quite popular in western countries, has recently been introduced in Bangladesh, and gained considerable attention from small-scale poultry farmers. The purpose of this study was to assess the current scenario, production systems and potentialities of turkey farming in Bangladesh. Data were collected using a pre-tested questionnaire from 100 turkey farmers residing in rural areas in different districts of Bangladesh. The problems and prospects of turkey rearing in the selected areas were quantified and assessed. No illiterate farmers were involved in turkey farming and 97% of the farmers have small household with 3.67 members per family. Most of the farmers (60%) were medium income size with income range BDT 250001 to 400000 year. Most of the farmers (57%) reared turkey for meat purpose whereas the average turkey population per household was 43.20 birds. About 24% of farmers reared turkey in confinement system, and 76% of farmers reared in semi-intensive management system and 68% of farmers had no related training on turkey farming. All farmers use ready broiler/layer feed due to the unavailability of turkey feed that was bought from local market. Grazing was practiced to supply vegetative plants as diet for turkeys. Most of the farmers (86%) vaccinate turkey regularly, and among them 96% complained about vaccine unavailability. Average mortality was recorded at around 6.2%. All the farmers follow a natural breeding system for reproduction. The farmers mentioned that turkey farming is decreasing day by day due to unskilled farmers, lack of turkey ready feed, unavailability of vaccines and lack of marketing facilities. Collectively, it can be inferred that the introduction of ready-made turkey feed, ensuring vaccination, providing financial and technical assistance and offering training to small-scale turkey farmers are the pivotal factors in boosting small-scale turkey farming in Bangladesh. This, in turn, may have the potential to increase household income and generate employment opportunities for youth, rural women, and small-scale marginal farmers.
Bangladesh Journal of Animal Science 53 (2): 40-54, 2024
Checklist of Deuteromycetous fungi of Bangladesh – III
Authors: Shamsi Shamim
Published: June 2024

Sixly two species of anamorphic fungi under 17 genera belonging to the  Form family  Sphaeropsidaceae and Melanchoniaaece in Bangladesh from 1952 till date are enlisted in this account. The alphabetical checklist of the genera is provided herewith. Further updates will be added in the subsequent versions of the publication.
Bioresearch Commu. 10(2): 1495-1500, 2024 (July)
Evaluation of vitamin D status and its association with dietary patterns and sociodemographic factors among adolescents attending the outpatient department of selected hospitals in Dhaka city, Bangladesh
Authors: Jaiswal Sanni , Hoque Bhuiyan Md Nizamul , Islam Khaleda
Published: June 2024

Objectives: The current study aims to evaluate the vitamin D status of adolescents undergoing treatment at selected tertiary hospitals’ outpatient departments (OPD) in Dhaka city and to look at the relationships between vitamin D levels and sociodemographic characteristics and dietary habits. Methods: The study followed a cross-sectional study design targeting adolescents (10–19 years old) who came to the OPD of selected tertiary hospitals. Following the convenience sampling procedure, a total of 384 adolescents were included in the study whose medical records were available with vitamin D status. Vitamin D status was evaluated based on medical reports. In addition, dietary habits were recorded using the Food Frequency Questionnaire (FFQ). To ascertain the factors influencing the individual’s vitamin D status, a multinomial logistic regression model was constructed. Results: Approximately two-thirds of the respondents were female, and over 58% of the respondents were young adolescents (ages 10 to 14). It was discovered that 32% of the adolescents lacked enough vitamin D, while 36.7% of them had insufficient levels of this nutrient. The deficiency level was considerably higher in older adolescents (15–19 years old). Girls were inadequate by 36.2% as opposed to boys, who were lacking by 24.6%. Deficits in vitamin D were more prevalent in women with low-paying employment, mothers with primary/below or no institutional education, mothers from lower-income families, etc., in addition to other sociodemographic characteristics. In terms of eating patterns, the study suggested that participants who frequently ate foods strong in vitamin D, like dairy, meat, eggs, nuts, fatty fish, fruits, and vegetables, as well as Horlicks, showed a decreased incidence of vitamin D deficiency. The mother's occupation (service holder), the less frequent use of dairy, meat, fortified oil, and Horlicks were discovered to be highly predictive factors of vitamin D deficiency, according to a multinomial logistic regression study. Conclusion: According to the current study, eating foods high in vitamin D, such as dairy, beef, fortified oil, and Horlicks, may raise adolescents’ vitamin D levels. Therefore, if any awareness programs or campaigns could be conducted for both parents and adolescents, it might be beneficial for reducing vitamin D deficiency.
Bioresearch Commu. 10(2): 1501-1515, 2024 (July)
Nutrient Composition of Nine Festival Dishes Obtained from A Recipe Survey Among Lower to Middle-Income Households in Selected Urban Areas
Authors: Jahan Mili Fatema Tuj , MA Rahim Abu Torab
Published: June 2024

Background and Objectives: Estimation of nutrient content of a recipe by a recipe calculation method may be cost‐effective and alternative to the chemical analysis for a range of applications, laboratory analysis of standardized recipes is considered a more authentic and accurate source of recipe nutrient data. Food composition data (FCD) regarding festival foods and dishes is very scanty in local and global food composition tables (FCT). The present study, thus, conducted a recipe survey on the ingredient profile of festival recipes consumed by lower to middle-income households in Bangladesh followed by proximate analysis of standard recipes obtained by collapsing similar recipes. Unanalyzed nutrients were obtained by data compilation from local and global food composition databanks (FCDB).  Methodology: A cross-sectional recipe survey was conducted sequentially on festival foods and dishes among purposefully selected housewives residing at different areas of Dinajpur district and Dhaka city. The study instrument was a structured pre-tested questionnaire. Nine homemade festival recipes out of 40 recipes cited viz., plain polao, beef bhuna, fish fry, chicken bhuna, payesh, beef biriyani, chinese vegetable, chicken roast and baked fish were selected and standardized according to the method established in our laboratory. The selected recipes were prepared and analyzed for proximate composition along with an estimation of the cooking yield factor. Content of moisture, ash, protein, total fat, total dietary fiber (TDF), available carbohydrates, and calorie values of nine selected dishes were determined using standard operating procedures (SOP) established on the basis of AOAC methods. Precision and accuracy of analytical values were checked as part of Quality Assurance Program (QAP). Data compilation of missing values for vitamins and minerals was conducted according to FAO data compilation toolkit. Result: Moisture content ranges from 30.42-70.75%, protein content ranges from 2.60-35.70%, fat content ranges from 2.61-22.53%, ash content ranges from 0.6241-8.8%, TDF ranges from 0.58-8.49%, carbohydrates ranges from 0.65-45.7% and energy content ranges 101.5-368.4 kcal/100g fresh sample. The cooking yield ranges from 40.96-96.82%, which is highest in plain polao and lowest in fish fry. Conclusion: The data generated from this study can be used as reliable data which will enrich the national food composition table.
Bioresearch Commu. 10(2): 1516-1523, 2024 (July)
Characterization of complete mitochondrial genome of Labeo rohita from Bangladesh
Authors: Jahan Hawa , Chakraborty Moumita , Alam Mohammad Shamimul , Begum Rowshan Ara
Published: June 2024

Labeo rohita, commonly known as rui/rohu possesses an important role in agricultural and economic aspects in Bangladesh. This study aimed to characterize the mitochondrial genome of this economically important fish species. Primers (24 pairs) were designed to amplify the whole genome and most of the regions contained 700 to 800bp. In this study, nucleotide sequences of 16,607 bp of the mitochondrial genome of L. rohita were determined for the first time from Bangladesh, which consists of 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes and one D-loop region. All of the genes were similar in size compared to other fish mitochondrial genomes. The gene arrangements, and intergenic and gene overlapping nucleotides of the present study, were similar to that of other Labeo genera so far reported. The phylogenetic tree shows 100% similarity in L. rohita mitochondrial genomes collected from two different areas of Bangladesh. This nucleotide sequence data of the mitogenome of L. rohita would provide necessary information for further studies, including population genetics of carp fishes.
Bioresearch Commu. 10(2): 1539-1544, 2024 (July)
Effect of Self-talking and Determination on Performance in Students
Authors: Islam Aminul , Alam Tasneem Alam
Published: June 2024

We are guided by our thoughts and determination. The problem of the present study was to investigate whether there is any effect of self-talking and determination on enhancing performance. The current study aimed to ascertain whether future performance is impacted by self-talking and determination. We hypothesized that in order to improve performance, self-talking and determination are beneficial. We selected 28 students from class VI and then randomly divided them into experimental and control groups. We taught the experimental participants how to apply self-talking and determination positively. Then both groups were given some tasks such as handwriting, drawing, and talking about themselves. We found that the mean scores of times spent in performance for experimental and control groups were 631.50 seconds and 521.50 seconds, respectively, which differed significantly at the .046 (α=.05) level with a    t-value of 2.09 (df=26). We came to the conclusion that self-talking and determination have a favorable impact on improving performance because the experimental group performed for a significantly longer time than the control group.
Bioresearch Commu. 10(2): 1553-1556, 2024 (July)
Development and Validation of the Motivation for Healthy Eating Behavior Scale (MHEBS) in the Bengali-Speaking Adults
Authors: Nowar Abira , Basu Rivu , Hossain Shahadat , Jabbar Antora , Alim Sharmin Rumi
Published: June 2024

Purpose: This study aimed to develop and validate a scale to assess the motivation for healthy eating behavior in Bengali-speaking adults.
Methodology: The study was cross-sectional in nature and was conducted online via Google Forms. A total of 220 Bengali-speaking adults participated in the study. A literature review was conducted to generate an item pool regarding motivation for healthy eating. The content validity of the items was evaluated by an expert panel from related fields. Based on their responses, the items were modified, and 15 items were assessed for face validity. The scale’s construct validity was assessed by performing an Exploratory Factor Analysis (EFA). The reliability of the scale was examined using the internal consistency reliability coefficient or Cronbach’s alpha. To establish the convergent and divergent validity of the scale, the Satisfaction with Life Scale (SWLS) and Fear of COVID-19 Scale (FCV-19S) scale were used.
Major Findings: The MHEBS showed good content and face validity. The internal consistency reliability of the scale was in the acceptable range with Cronbach’s alpha value of 0.820. The EFA suggested a three-factor scale structure, and the factors were “benefits of healthy eating”, “external regulation”, and “affordability”. The scale also showed acceptable convergent and divergent validity with SWLS and FCV-19S respectively.
Implications: MHEBS — a 15-item 5-point Likert scale — is the first developed scale to measure the motivation for healthy eating behavior in the Bengali-speaking adult population. The scale would help identify what motivates Bengali adults to for maintaining healthy eating behavior. In addition, it would aid program planners to effectively design health promotion strategies as well as health practitioners and dietitians to counsel patients before applying dietary behavior change interventions. 
Bioresearch Commu. 10(2): 1557-1564, 2024 (July)
Factors associated with adolescent food Security and nutritional status in a selected rural area of the central region of Bangladesh
Authors: Akter Nazifa , Mohammad Kurshed Ali Abbas
Published: June 2024

Food insecurity affects physical growth, health of adolescents and nutritional status while food insecurity is common in rural area of Bangladesh. During adolescence, individuals have gone through series of key transitions into adulthood which may be hindered by food insecurity and poor nutritional status. The present study aimed to identify the most relevant factors that may be associated with food security and nutritional status of adolescents. Additionally, this study also tried to explore the association between adolescent food security and their nutritional status. This Cross-sectional study was carried out among 317 unmarried adolescents aged 10 to 19 years in a selected rural area of central region of Bangladesh. Multistage cluster sampling and purposive sampling were followed to select households and enroll adolescents into the study. Other than descriptive statistics, chi-square test was performed to test the difference between groups as well as to evaluate expected associations between different predictors and outcome variables. Additionally, univariate logistic regression was carried out to estimate the effect of predictor variables on the outcome variable. Moreover, multivariate logistic regression analysis was conducted to control the potential confounder effects upon desired outcome variables. It is observed that around 32.5% adolescents were food secure whereas 67.5% adolescents were food insecure. Our study also reveals that two predictor variables such as family income and family size had significant association with food security where odds of becoming food secure were higher among the adolescents from higher income families (AOR=6.1; 95% CI=2.240-16.718) and smaller families (AOR=3.4; 95% CI=1.563, 7.495). Furthermore, prevalence of underweight, normal nutritional status and overweight was 13%, 83% and 4% respectively where adolescent educational qualification and occupation were significantly associated with normal nutritional status. Adolescents with higher educational qualification (AOR=12.3;95% CI=5.270,28.479) and involved in work (AOR=12.3;95% CI=5.270,28.479) were more likely to have normal nutritional status compared to those who were primarily educated and not involved in work. Further study is recommended to replicate the findings and to generate new knowledge about relevant factors associated with adolescent food security and nutritional status.
Bioresearch Commu. 10(2): 1573-1582, 2024 (July)
Anti-inflammatory and analgesic activities of the ethanolic extract of Seaweed Asparagopsis spp. Isolated from the Bay of Bengal, Bangladesh
Authors: Nayem Abu , Akter Maksuda , Chowdhury Khadiza Rezwana , Alim Md Abdul , Zaman Nazia Rifat , Hossain Mohammad Nazir
Published: June 2024

The marine zone of Bangladesh covers a great diversity of natural ecosystems including a marine environment rich in commercially important seaweeds. Seaweeds are widely used in the pharmaceutical, cosmetics, chemical, antibacterial, and food industries globally. According to the Food and Agriculture Organization of the United Nations (FAO), China, Indonesia, Korea, the Philippines, and Japan are the top five nations in the world for seaweed production. In recent times, Bangladesh has initiated comprehensive research endeavours focused on seaweed, recognizing its immense potential across diverse sectors. Seaweed in Bangladesh is primarily harvested for various purposes, including food, medicine, and industrial applications. In this study, red seaweed Asparagopsis collected from the coast of Saint Martin’s island of the Bay of Bengal was tested for its bioactive properties like anti-inflammatory and analgesic activity. Anti-inflammatory test was done using carrageenan suspension and three analgesic tests e.g. hot plate test, acetic acid-induced writhing test, and formic acid-induced test were performed in mice model in the laboratory with 50% ethanol extract of Asparagopsis. Following in vivo testing, no significant activity was observed. However, Asparagopsis was found to be rich in phytochemicals like phenols, flavonoids, saponin, glycoside, steroids, tannins, and alkaloids suggesting its importance for future scientific study. This may create a door to a new world in the Blue Economy sector of Bangladesh.
Bioresearch Commu. 10(2): 1583-1591, 2024 (July)
Effect of Verbal Reinforcement and Verbal Punishment on Performance
Authors: Islam Aminul , Hossain Afifa
Published: June 2024

The problem of the present study was to investigate whether there is any effect of verbal reinforcement and verbal punishment on performance. The experiment was conducted on some young adult participants. The objective of the present study was to assess whether usual verbal reinforcement influenced performance more than the verbal punishment. It was hypothesized that positive verbal reinforcement would have a significantly greater impact on respondents' performance than positive verbal punishment. We adopted a between group design where 20 undergraduate students were randomly assigned to two conditions, namely positive verbal reinforcement and positive verbal punishment. We provided the interventions through a small, structured interview where the positive verbal reinforcement group were handled warmly but the other group were not. Then we asked them to complete two specially designed monotonous tasks and measured their duration of engagement in the tasks as a measure of performance. The mean durations of engagement for the positive verbal reinforcement and positive verbal punishment groups were 1555.90 seconds and 675.90 seconds, respectively, which differed significantly at the .006 level with a t-value of 3.11 (df=18). And thus, we concluded that positive verbal reinforcement is more powerful to enhance performance than the positive verbal punishment.
Bioresearch Commu. 10(2): 1609-1611, 2024 (July)
Association between dietary calcium and pregnancy induced hypertension
Authors: Munni Ummy Salma , Islam Khaleda
Published: June 2024

Background: Pregnancy induced hypertension (PIH) is one of the major complications of pregnancy. Inadequate calcium (Ca) intake is considered a public health problem in some vulnerable groups, especially pregnant women. A balanced diet during pregnancy with adequate Ca should be the ideal solution, and to proceed in this direction, evidence is required on the nature and extent of Ca deficiency in the diet of PIH mothers. Objectives: To assess the dietary intake of Ca in PIH (compared to non-PIH) mothers and to explore the factors affecting the intake of those nutrients. Methods: Under an observational case-control design, we recruited 300 Bangladeshi pregnant women in two groups (150 with and 150 without PIH), aged between 20-40 years (from 3 hospitals in Dhaka) at the 3rd trimester of pregnancy. A pre-tested questionnaire was used to collect the data. The first part of the questionnaire was allocated to general socio-demographic and clinical characteristics. Secondly, a food frequency questionnaire was used to estimate individual dietary Ca intake. Results: The dietary Calcium intake [(mg/day), median (range)] was significantly lower [265(111-487)] (p<0.001) in the PIH compared to the non-PIH [350(201-984) ;(p<0.001)] group. On bivariate analysis, the dietary Calcium intakes had a significantly negative correlation with mean blood pressure which was considered an indicator of the severity of PIH (r=-0.276; p<0.001) for Ca. On regression analysis, PIH was found to be significantly associated with a lower intake of Ca (b=-0.009; p<0.001) when the effects of age, family history of HTN and family income were adjusted. Conclusion: Dietary consumption of Calcium during pregnancy is much lower than those recommended in our population, PIH seems to have an association with dietary deficiency of Calcium in pregnant women.
Bioresearch Commu. 10(2): 1612-1618, 2024 (July)
Acceptance of Alternative Medicine in Bangladesh: A Study on Homeopathy
Authors: Parvin Nasrin , Rasel Nur E Alam , Hashem Bhuyan Mohammad Abul , Rahman Md Salimur , Md Mashiusjaman  , Amin Md Ruhul , Rume Rumana Afroze , Hasan Nazmul
Published: June 2024

Homeopathy is widely recognized globally, including in Bangladesh, as part of Complementary and Alternative Medicine (CAM) acknowledged by the World Health Organization (WHO). It is noted for effectively treating various conditions without adverse effects, which has garnered significant interest. This recent study investigated the acceptance of homeopathic medicine among Bangladeshi people, surveying 157 respondents. The participants comprised of 64.3% males and 35.7% females; among them a large majority (88.5%) had at least a graduate-level education, and 72.6% belonged to middle-class families. Interestingly, middle-aged individuals (45.2%) showed a particular affinity for homeopathy. This study revealed a high awareness levels among the respondents, with 89.8% familiar with homeopathic medicine and 86.6% erudite about its utilization. In addition, safety was mentioned by 65.6% of respondents, affordability by 55.4%, and effectiveness in many cases by 44.9%. However, all the above points collectively influenced their preference for homeopathy. There was a consensus among 69.4% of respondents advocating for integrating homeopathy into mainstream healthcare. The study participants endorsed few ideas including ensuring quality control of homeopathic medicines, promoting research initiatives, and providing greater integration opportunities for homeopathic practitioners within the healthcare system.
Bioresearch Commu. 10(2): 1619-1626, 2024 (July)
First Generation’s Language Attitudes in a Bilingual Context: A Study on the Bihari Community in Dhaka City
Authors: Dilshad Dilara , Ahmed Sheikh Saifullah
Published: June 2024

This study investigated language attitudes of the first generation of the Urdu-speaking Bihari Community in Dhaka city. In this paper, the term ‘first generation’ refers to persons who immigrated to erstwhile East Pakistan (now Bangladesh) during the partition in 1947 and were born before the liberation warof 1971.Language attitudeis defined in this research as an individual or communal expression toward Urdu and Bangla, as well as language choices and use by the first generation. The purpose of this research was to investigate language attitudes of the first generation towards their mother tongue, Urdu, and the language of the dominant community, Bangla, in a bilingual situation in the Bihari community of Dhaka, and the present condition of Urdu in Bangladesh. The primary goal was to determine if they were positive, negative, or neutral to their own language, Urdu and to the dominant Bengali language. This study adopted a mixed-methods approach, and the data were obtained through a questionnaire and interviews with some respondents of the Bihari community of Geneva camp, Dhaka. The findings highlight the impact of their language attitudes on their language use and choice in bilingual situations and reveal that the first generation has a more positive attitude toward Urdu than Bangla. This study may serve as a specimen for future academics to assess how the language of a community shifts and how language attitudes of that particular community change over time.
IUBAT Review—A Multidisciplinary Academic Journal, 7(1): 01-25
Effect of Organic and Inorganic Fertilizers on Growth and Yield of Tomaloo
Authors: A M Farooque  , Karim Mohammad Rezaul , Hoque Md Mahfuzul , Hasan Mahadi
Published: June 2024

An experiment was carried out at the Agricultural Research Field of IUBAT, Dhaka, Bangladesh from October 2022 to April 2023 to investigate the Effects of organic and inorganic fertilizers on the growth and yield of “Tomaloo” in continuation of previous research. “Tomaloo” is a wonder plant created by grafting between a potato and a tomato plant which bears tomato in the upper parts of the plant and the potato grows underground. The experiment was set following Randomized Complete Block Design consisting of four treatments and three replications. The treatments used in the study were F0- Without fertilizer, F1-Organic fertilizer, F2-Chemical fertilizer, and F3-Organic + Chemical fertilizer. The tomato variety BARI-20 (Cherry Tomato) and Potato variety Diamant were used in this experiment. From the study, significant differences were observed in terms of growth and yield components. Most of the studied parameters such as plant height, number of leaves, number of branches, number of flower clusters per plant, number of fruits per cluster, number of fruits per plant, fruit length, fruit diameter, single fruit weight, and total fruit yield per plant of Tomato and Potato showed significant difference by the different fertilizer treatments. The maximum “Tomaloo” plant growth was found in the F1 treatment and the minimum was recorded in the F0 treatment. The highest yield of Tomato (373.58 g) and Potato (204.90 g) per plant of “Tomaloo” was recorded in the F1 treatment and the lowest yield of Tomato (171.95 g) and Potato (117.37 g) per plant was recorded in the F0 treatment. It was revealed from the present findings that maximum growth and yield of tomato and potato were obtained from “Tomaloo” plant in response to F1 (Organic fertilizer) fertilizer treatments.
IUBAT Review—A Multidisciplinary Academic Journal, 7(1): 45-61