bluuebunny/crossref_metadata_2025_split huggingface dataset:
Strategies for learning and academic achievement of secondary school students
Authors: Ahmed Oli , Khanam Mahfuza 
Published: April 2020

Relationship between learning strategies and academic achievement was studied. In addition, it explored whether there were any differences between high and low achievers, males and females, and science and humanities’ students in using learning strategies. Findings revealed that academic achievement was significantly correlated with academic self‐efficacy, organization, and metacognitive self‐regulation. High achievers differed from low achievers in using organization, and meta‐cognitive self‐regulation. In control of learning beliefs and rehearsal, significant gender differences exited. Science group students significantly differed from humanities students in academic self‐efficacy, elaboration, and critical thinking.
Dhaka Univ. J. Biol. Sci. 24(1): 91-97, 2015 (January)
Cognitive distortion among psychiatric patients
Authors: Siddika Ummey Saima , Chowdhury Kamal Uddin Ahmed 
Published: April 2020

The aim of the current study was to identify the level of cognitive distortions among the patients suffering from psychiatric disorder according to age, gender and educational qualification. Cross sectional survey method was followed, using Bangladesh Cognitive Distortion Scale (BCDS, Siddika and Chowdhury, 2013) on 239 patients, suffering from anxiety and depression for assessing cognitive distortion. Among the psychiatric patients 86.2% respondents found to have clinical level of cognitive distortion. Analysis revealed that there is no significant difference in cognitive distortion according to different age groups and gender. But regarding educational qualification, there is significant difference of total score of Bangladesh cognitive distortion scale (p > 0.01) and it is higher among low literate respondents (non institutional to class 5) than high literate.
Dhaka Univ. J. Biol. Sci. 24(2): 191-198, 2015 (July)
Number of bystander, time pressure and gender effects on altruistic behavior
Authors: Samia Shafrina , Khanam Mahfuza 
Published: April 2020

The effects of number of bystander, time pressure and gender on showing altruistic behavior was investigated. This covered three hypotheses that: (i) individual would exhibit more altruistic behavior to the victim when they are alone in a situation than being in a group, (ii) time pressure would inhibit altruistic behavior and (iii) there would be no differences between males and females in case of showing altruistic behavior. A total of 40 individuals (20 males and 20 females) and another 20 groups of strangers were the sample of this study and three field experiments were done to examine the hypotheses. Findings revealed that increasing number of bystanders decreased the probability of showing altruistic behavior, under time pressure people less likely to help others and no significant difference was found between males and females in showing altruistic behaviour. The result of the present study can provide a greater understanding of why people fail to do what is morally expected and thus lead to a greater tolerance and understanding of others.
Dhaka Univ. J. Biol. Sci. 27(1): 1-7, 2018 (January)
Exploring psychological correlates of peers and fathers of drug addict adolescents
Authors: Begum Farjana , Mahmood Sheikh Iqbal 
Published: April 2020

Drug dependency is clearly a problem for almost every country and Bangladesh is no exception. As the parents and peers are the closest persons of an adolescent whether addict or non-addict, so the present study was conducted with the following objectives: (a) To explore the peer relationship of the drug addict adolescents, (b) to investigate the parenting style of the fathers of the drug users and (c) to find the economic status of adolescent drug users. 60 male drug addict adolescents from different areas of Dhaka city were selected following snow ball technique. For the assessment of peer relation a scale drug and alcohol use-High risk behavior by Church (1994) was translated into Bangla and for assessing parenting style of the fathers of adolescents drug addicts Parental Acceptance/Rejection Questionnaire Child (PARQ), Short version of Rohner (2004b) was translated into Bangla and were used. For the analysis of the obtained data frequency count and percentage of responses made by the drug addict adolescent about their peers and fathers were calculated. The results show that the adolescent drug addict has very close relation with their peer as the type of drugs, frequency of taking drug and even factors determining their being drug addict are almost same. Results further show that parenting style of the fathers of the drug addict adolescent is rejective. Most of the adolescent get coldness or lack of affection, hostility or aggression, indifference or neglect, undifferentiated rejection but little warmth from their fathers. Finally, addiction is found to spread over access all economic status from almost lowest to highest in the present study.
Dhaka Univ. J. Biol. Sci. 28(1): 9-20, 2019 (January)
Phytoplankton in relation to water quality of Tanguar Haor ecosystem, Bangladesh: I. Rauar station
Authors: Bhuiyan Mohammad Azmal Hossain , Islam SAM Shariar , Kowser Abu , Islam Md Rasikul , Kakoly Shahina Akter , Asaduzzaman Khandoker , Khondker Moniruzzaman 
Published: April 2020

The water quality at Rauar station of Tanguar Haor, Sunamganj was assessed studying phytoplankton and associated environmental variables. The environmental variables were monitored over a period of one year, collecting samples at two months interval between March, 2017 and March, 2018. Air temperature, rainfall, and humidity ranged from 22.6 - 32.1°C, 48 - 76% and 8 - 930 mm, respectively. Air temperature showed a direct relationship with water temperature which varied from 22.4 - 31.0°C during the study period. The water transparency remained relatively constant throughout the year having a mean Secchi depth (Zs) value of 2.48 m. Total dissolved solids (TDS), conductivity, and pH of the water ranged from 51 - 85 mg/l, 60 - 110 μS/cm, and 7.2 - 9.7, respectively. In December, because of a temperature fall, the dissolved oxygen (DO) concentration of the water reached its maximum value of 6.09 mg/l. In the rest of the period, the concentration remained between 2.44 and 4.80 mg/l. The value of alkalinity ranged from 0.43 - 1.35 meq/l. Among the nutrients, soluble reactive phosphorus (SRP), soluble reactive silicate (SRS), and NO3-N ranged from 5.43 - 36.43 μg/l, 4 - 14.58 mg/l, and 0.06 - 0.31 mg/l, respectively. The concentration of NH4+ ranged from 238 - 1230 μg/l. The highest concentrations (905 and 1230 μg/l) occurred between September and December, 2017. This might be attributed to the higher density of migratory birds during that period. The phytoplanktonic biomass expressed as chlorophyll-a (Chl-a) ranged from 1.35 - 8.45 μg/l while its degraded product phaeophytin concentration ranged from 0.08 - 3.5 μg/l. The standing crop of phytoplankton ranged from 397 - 2480 × 103 individuals/l of haor water exhibiting its maximum abundance in September. This parameter showed a highly significant positive correlation with SRP. From the correlation analysis, the degradation of chl-a to phaeophytin was found to be temperature dependent. Considering the different physicochemical and biological water quality data, it could be said that the Tanguar Haor is still free from organic pollution. However, the range of soluble reactive phosphorus data (5.43 - 36.43 μg/l) show that the Haor has been passing a meso-eutrophic state.
Dhaka Univ. J. Biol. Sci. 28(2): 131-138, 2019 (July)
Effects of cadmium on the anatomical structures of vegetative organs of chickpea (Cicer arientinum L.)
Authors: Liza Saima Jahan , Shethi Kishwar Jahan , Rashid Parveen 
Published: April 2020

The effects of cadmium on the anatomical structures of different vegetative parts, namely root, stem and leaf of chickpea, Cicer arientinum L. was studied. Four different concentrations of CdCl2 e.g. 250, 500, 750 and 1000 μM were considered as treatments alongside non treated samples (control). In case of root anatomy decrease of root diameter, root cortex area, thick walled endodermal layer and reduced number of metaxylem vessels were observed compared to control. Similarly, stem diameter, cortical area, size and number of xylem vessels were decreased in Cd treated stem. However, large and increased number of trichomes had been found in Cd treated stem samples with deposition of phenolic compounds in vessels with increasing concentration of Cd. Considerable less toxic effects were observed in leaf anatomy except decrease in leaf thickness, reduced vascular area and closure of stomata in comparison to control sample. All such plant anatomical alterations indicated adverse effects as well as tolerance of chickpea up to certain concentrations of heavy metal to cope up with the changing environment.
Dhaka Univ. J. Biol. Sci. 29(1): 45-52, 2020 (January)
Levocarnitine in the management of fatigue in levothyroxine treated hypothyroid patients
Authors: Akhter Farjana , Dewan Zesmin Fauzia , Hasnat MA , Akhter Selina 
Published: April 2020

Background and objectives: Hypothyroid patients often complain of fatigue even after effective treatment. Thyroid hormone plays an important role in carnitine-dependent long chain fatty acid transport for oxidation and ultimate formation of ATP. Deficiency of L-carnitine has been presumed to disrupt ATP formation leading to fatigue. Present study was designed to assess the role of L-carnitine as a supplement to manage the fatigue state of hypothyroid patients.
Methods: Hypothyroid patients receiving levothyroxine (L-T4) and suffering from fatigue symptoms were enrolled. Patients were randomly divided into Group A (Control group, n=35) and Group B (Experimental group, n=36). Patients of Group A were treated with L-T4 only and Group B patients received L-carnitine 2 g/day in addition to L-T4 therapy for 8 weeks. Fatigue was assessed by fatigue severity scale (FSS), physical fatigue (PF) and mental fatigue (MF) scores. Data regarding fatigue status, serum thyroid stimulating hormone (TSH) and free thyroxine (FT4) were collected at the beginning and after 8 weeks of intervention.
Result: The mean age of Group A and Group B patients was 33.5±8.1 and 35.4±7.5 years respectively (p>0.05); and the mean body weight was 61.5±9.6 kg and 62.5±8.2 kg respectively (p>0.05). The mean baseline values of different fatigue scores and the serum TSH and FT4 levels of patients of two groups were identical and not significantly different (p>0.05). In Group-A patients, the mean MF score improved significantly (5.2±1.5 vs 4.6±1.4; p=0.01) from baseline score after 8 weeks while the FSS and PF scores did not improve significantly (p>0.05). In Group-B patients, the mean FSS, PF and MF scores improved significantly (p<0.01) from baseline score after 8 weeks of treatment with L-carnitine along with L-LT4 treatment. FSS, PF and MF scores of Group-B patients reduced significantly (p<0.01) compared to Group-A patients after 8 weeks of treatment. FSS, PF and MF scores improved in 88.9%, 77.8% and 47.2% cases respectively in Group-B compared to 20%, 14.3% and 5.7% cases in Group-A. L-carnitine was well tolerated and no severe adverse event was recorded.
Conclusion: The results suggest that, administration of L-carnitine along with L-T4 in hypothyroid patients significantly reduced physical and mental fatigue.
Ibrahim Med. Coll. J. 2019; 13(2): 45-52
Postnatal care services and factors affecting its utilization in slum areas of Dhaka city
Authors: Nili Nilufar Yeasmin 
Published: April 2020

Background and objectives: Maternal as well as infant mortality is high in Bangladesh. Utilization of post natal care (PNC) services is important to reduce maternal and infant mortality. Considering this matter, this study attempted to find out the level of PNC utilization by women living in slum areas of Dhaka city as well as to identify the factors associated with the utilization of PNC services.
Methods: This study was conducted in Khilgaon and Rampura slums of Dhaka city. In each slum, women aged between 15-49 years who had given birth to at least one child were enrolled in the study by random sampling technique. Participants were interviewed with a semi-structured questionnaire which included information on socio-economic, demographic, cultural status as well as information on PNC service utilization.
Results: Out of total 360 enrolled women in both slums, 58.6% utilized PNC services. The rate of utilization of PNC services was 55% and 62.2% in Khilgaon and Rampura slum respectively. Compared to 40-49 years age group, significantly (p<0.01) higher percentage of women aged <20, 20-29 and 30-39 years utilized PNC services (69.6%, 67.0% and 56.4% respectively). The significant associates of receiver of PNC were respondent’s education, number of antenatal care (ANC) received, level of tetanus vaccination, place of delivery, distance between home and clinic, mass media exposure, male participation and autonomy.
Conclusion: Local socioeconomic and cultural aspects should be considered while planning intervention program to improve the utilization of PNC service.
Ibrahim Med. Coll. J. 2019; 13(2): 53-58
Impacts of Rice Hull and Pistia on the Vegetative Growth of Rice and Physico-Chemical Properties of Saline Soil Under Variable Moistures
Authors: Hossain Mohammed Sadid , Khan Md Harunor Rashid , Akter Suma , Saha Mithun Kumar , Farzana Fariha 
Published: April 2020

A pot experiment was conducted using BRRI Hybrid Dhan-6 variety of rice at the premises of the Department of Soil, Water and Environment, University of Dhaka, Bangladesh to evaluate the capabilities of rice hull (RH: 0, 2, 4 t ha-1) and pistia (PT: 0, 400, 800 kg ha-1) for the improvement of growth performances of rice grown under field moist (FM: 70% moisture) and 2 - 5 cm standing water (SW) conditions in saline soil. Among the vegetative growth, the plant heights, number of productive tillers, fresh shoot and shoot dry matter weights were found to be increased significantly (p ≤ 0.05) with the increased rates of rice hull and pistia treatments, and the increments were more striking by their combinations in most of the cases under both FM and SW conditions. The tallest plant heights (112 cm in FM and 120 cm in SW) and the maximum number of productive tillers (13 in FM and 16 in SW) were recorded at maturity stage of rice in the T8 (RH4PT8) treatment where rice hull and pistia were applied at the highest (RH: 4 t ha-1, PT: 800 kg ha-1) dosages. Based on superiority in both the plant heights and number of tillers, the amendments can be arranged in the sequence of T8 > T7> T6> T5> T2> T3>T4> T0 > T1. The analysis of variance on these data indicated that in the standing water condition, fresh shoot and shoot dry matter weights of rice plants were found to be increased significantly (p ≤ 0.05) by the application of the higher rates of the treatments and their combinations. Thus, the application of indigenous organic amendments such as, rice hull and pistia showed significant contribution for the growth performances of rice under variable moistures but further researches are needed under variable soil and climatic conditions to ensure food security under saline soil.
Asiat. Soc. Bangladesh, Sci. 44(2): 173-183, December 2018
Energy Recovery from Waste Tires Using Pyrolysis: Palestine as Case of Study
Authors: Abdallah Ramez , Juaidi Adel , Assad Mahmoud , Salameh Tareq , Manzano-Agugliaro Francisco 
Published: April 2020

The first industrial-scale pyrolysis plant for solid tire wastes has been installed in Jenin, northern of the West Bank in Palestine, to dispose of the enormous solid tire wastes in the north of West Bank. The disposable process is an environmentally friendly process and it converts tires into useful products, which could reduce the fuel crisis in Palestine. The gravimetric analysis of tire waste pyrolysis products from the pyrolysis plant working at the optimum conditions is: tire pyrolysis oil (TPO): 45%, pyrolysis carbon black (PCB): 35%, pyrolysis gas (Pyro-Gas): 10% and steel wire: 10%. These results are depending on the tire type and size. It has been found that the produced pyrolysis oil has a High Heating Value (HHV), with a range of 42 − 43 ( MJ / kg ) , which could make it useful as a replacement for conventional liquid fuels. The main disadvantage of using the TPO as fuel is its strong acrid smell and its low flash point, as compared with the other conventional liquid fuels. The produced pyrolysis carbon black also has a High Heating Value (HHV) of about 29 (MJ/kg), which could also encourage its usage as a solid fuel. Carbon black could also be used as activated carbon, printers’ ink, etc. The pyrolysis gas (Pyro-Gas) obtained from waste tires mainly consist of light hydrocarbons. The concentration of H2 has a range of 30% to 40% in volume and it has a high calorific value (approximately 31 MJ / m 3 ), which can meet the process requirement of energy. On the other hand, it is necessary to clean gas before the burning process to remove H2S from Pyro-Gas, and hence, reduce the acid rain problem. However, for the current plant, some recommendations should be followed for more comfortable operation and safer environment work conditions.
Pengaruh Latihan Kelincahan terhadap Kemampuan Menggiring Bola pada Siswa Ekstrakurikuler Sepakbola SMA Negeri 1 Jebus
Authors: Asfanza Asfanza , Putranto Dedy , Oktarina Oktarina 
Published: April 2020

Penelitian ini dilatar belakangi kurangnya kemampuan menggiring bolapada siswa saat melakukan teknik menggiring pada permainan sepakbola belum optimal. Penelitian ini bertujuan untuk mengetahui pengaruh latihan kelincahan terhadap kemampuan menggiring bola pada siswa ekstrakurikuler sepakbola SMA Negeri 1 Jebus. Penelitian ini menggunakan pendekatan kuantitatif, dengan metode penelitian eksperimen, desain yang digunakan pada penelitian ini yaitu one grouppretest-postest design, populasi pada penelitian ini adalah seluruh siswa ekstrakurikuler sepakbola SMA Negeri 1 Jebus yang berjumlah 30 siswa. Dalam penelitian ini peneliti menggunakan teknik Sampling jenuh. Teknik pengumpulan data yang digunakan adalah tes menggiring bola. Untuk analisis data peneliti menggunakan uji normalitas, dan uji hipotesis. Berdasarkanhasil pengujian hipotesis menggunakan uji-t berhubungan diperoleh nilai thitung > ttabel pada taraf signifikan 0,05 yaitu 11,549 >1,699, sehingga dapat diambil keputusan bahwa Hoditolak dan Ha diterima. Hal ini membuktikan, ada pengaruh signifikan latihan kelincahan terhadap kemampuan menggiring bola pada siswa ekstrakurikuler sepakbola SMA Negeri 1 Jebus.
Pengaruh Latihan Media Karet Ban terhadap Keterampilan Servis Bawah Bola Voli Siswa Ekstrakurikuler di SMP Negeri 5 Pangkalpinang
Authors: Supratio Bambang , Putranto Dedy , Oktarina Oktarina 
Published: April 2020

Penelitian ini bertujuan untuk mengetahui bagaimana pengaruh latihan media karet ban terhadap keterampilan servis bawah bola voli siswa ekstrakurikuler di SMP Negeri 5 Pangkapinang. Penelitian ini menggunakan pendekatan kuantitatif, metode True Eksperimental Design, dengan bentuk desain penelitian Pretest Posttest Control Group Design dengan 1 macam perlakuan. Teknik pengumpulan data menggunakan tes dan pengukuran. Populasi dalam penelitian ini adalah siswa yang mengikuti kegiatan ekstrakurikuler di SMP Negeri 5 Pangkalpinang yang berjumlah 24 siswa. Sampel dalam penelitian ini berumlah 24 siswa dengan pengambilan sampel menggunakan teknik sampling jenuh. Instrument yang digunakan dalam penelitian ini adalah keterampilan servis bawah bola voli dari Nurhasan. Setelah semua data dianalis dengan berbagai tahapan yang dimulai dengan uji statistika untuk menentukan mean, median, modus, standar deviasi, varian dan range. Kemudian dilakukan uji normalitas data, uji homogenitas dan uji hipotesis dengan syarat thitung lebih besar dari ttabel. Hasil hipotesis menggunakan uji-t, diperoleh hasil thitung lebih besar dari ttabel yaitu thitung 3,548 > ttabel 2,074 yang berarti H0 ditolak dan Ha diterima. Jadi dapat disimpulkan bahwa terdapat pengaruh latihan media karet ban terhadap keterampilan servis bola voli siswa ekstrakurikuler di SMP Negeri 5 Pangkalpinang.
Pengaruh Latihan Fartlek terhadap Daya Tahan Cardiovascular pada Siswa Ekstrakurikuler Futsal Madrasah Aliyah Al-Ittihadiyah Al-Islamiyah Sungaiselan
Authors: Lavenia Nia , Putranto Dedy , Walton Erick Prayogo 
Published: April 2020

Fartlek (speedplay) adalah suatu sistem latihan daya tahan tubuh yang dimaksudkan untuk membangun, mengembangkan dan memelihara kondisi tubuh seseorang. latihan yang tujuannya untuk meningkatkan daya tahan dan kecepatan dalam waktu yang lama. Penelitian ini adalah penelitian eksperimen dengan one group pretest-postest design yang bertujuan untuk mengetahui pengaruh latihan fartlek terhadap daya tahan cardiovascular siswa ekstrakurikuler futsal Madrasah Aliyah AIAI Sungaiselan. Penelitian dilakukan pada siswa ekstrakurikuler futsal yang berjumlah sebanyak 20 orang siswa yang akan diberikan perlakuan latihan fartlek. Pertemuan dilakukan sebanyak 16 kali pertemuan, sudah termasuk pretest dan postes. Hasil penelitian menunjukkan, bahwa nilai hasil uji normalitas dari pretest (tes awal) adalah -438,68, sedangkan hasil postest (tes akhir) adalah -694,97. Berdasarkan hasil pengujian hipotesis menggunakan uji-t berhubungan diperoleh nilai thitung > ttabel pada taraf signifikan 0,05 yaitu 11,83 > 1,729, sehingga dapat diambil keputusan bahwa Ho ditolak dan Ha diterima. Hal ini membuktikan, ada pengaruh signifikan latihan fartlek terhadap daya tahan cardiovascular siswa ekstrakurikuler futsal Madrasah Aliyah AIAI Sungaiselan.
Pengaruh Latihan Juggling Menggunakan Bola Karet terhadap Kemampuan Sepak Sila Permainan Sepak Takraw pada Ekstrakurikuler Siswa SMA Negeri 1 Lepar Pongok
Authors: Sandi Sandi , Yuanita Yuanita , Oktarina Oktarina 
Published: April 2020

Penelitian ini bertujuan untuk mengetahui Pengaruh Latihan Juggling Menggunakan Bola Karet Terhadap Kemampuan Sepak Sila dalam Permainan Sepak Takraw di SMA Negeri 1 Lepar Pongok. Latihan bola karet digunakan untuk meningkatkan kemampuan sepak sila sehingga kemampuan sepak sila siswa akan meningkat. Penelitian ini menggunakan pendekatan kuantitatif, penelitian eksperimen dengan bentuk desain pretest dan posttest control group design dengan 1 macam perlakuan, teknik pengumpulan data menggunakan tes dan pengukuran, populasi dalam penelitian ini adalah semua siswa ekstrakurikuler sepak takraw di SMA Negeri 1 Lepar Pongok yang berjumlah 26 siswa. Hasil penelitian menunjukan, bahwa nilai hasil uji normalitas dari pretest (tes awal) adalah 0,196 sedangkan hasil postest (tes akhir) adalah 0,198 berdasarkan hasil pengujian hipotesis menggunakan uji-t berhubungan diperoleh nilai > Pada taraf signifikan 0,05 yaitu, 3,704>2,060, sehingga dapat diambil keputusan bahwa ditolak dan diterima, hal ini membuktikan, ada pengaruh siknifikan Latihan Juggling Menggunakan Bola Karet terhadap Kemampuan Sepak Sila dalam Permainan Sepak Takraw pada Ekstrakurikules Siswa SMA Negeri 1 Lepar Pongok.