M. Belal Hossain

Noakhali Science and Technology University

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D. VAN DER HELM

University of Oklahoma

Takaomi Arai

Universiti Brunei Darussalam

As-Ad Ujjaman Nur

Noakhali Science and Technology University

Bilal Ahamad Paray

King Saud University

Mohammed Fahad Albeshr

King Saud University

J. J. Zuckerman

Columbia University

Qi Yu

Weifang Medical University

Yeasmin Nahar Jolly

Bangladesh Atomic Energy Commission

Partho Banik

Noakhali Science and Technology University

Jatish Chandra Biswas

Child Health Research Foundation

Cooperative Institutions

Noakhali Science and Technology University

152

Bangladesh Agricultural University

123

University of Rajshahi

University of Dhaka

Sher-e-Bangla Agricultural University

International Centre for Diarrhoeal Disease Research

Bangladesh Agricultural Research Institute

University of Oklahoma

Bangladesh Rice Research Institute

Jahangirnagar University

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Evaluation the Effect of Fungicides, Micronutrients and Botanicals on Purple Blotch Complex of Onion in Bangladesh

Authorea (Authorea) (2023)

Raihan Ferdous Salvia Aman Kanta Hosna Ara Chowdhury Nisha Tosnia Tohura M. Belal Hossain

Field research was conducted in the central research farm of Sher-e-Bangla Agricultural University (SAU), during the period from October 2020 to March 2021. The experiment was a layout with RCBD design to evaluate the effect of selected fungicides (Indofil, Mancer, and Ridomil Gold), micronutrients (Zinc, Boron, and Magnesium), and botanicals (neem and eucalyptus leave extract) on purple blotch complex of onion. Data were collected on percent disease incidence and percent disease index, the number of leaves per plant, leaf length, bulb diameter, bulb weight (fresh and dry), and yield. The local cultivar Faridpuri was used as a tested variety. Among the selected fungicides, Ridomil Gold gave a better result than other fungicides in controlling the percent disease incidence (52.67%) and percent disease index (49.00%) with the highest number of yield qualities per plant. In addition to this, the highest bulb diameter (18.23 cm), single bulb weight (47.98 g), fresh weight (3.16 Kg/plot), and dry weight (2.88Kg/plot) were also obtained in Ridomil Gold treated plots. This treatment also gave better yield performance (9.60 t ha-1) followed by Indofil (8.20 t ha-1) and Mancer (7.90 t ha-1), and increased yield by 54.34% over the control treatment. From the study, it was also found that among the micronutrients, boron gave more satisfactory results than botanicals.

Bulb

Dry weight

10.22541/essoar.169272221.16503831/v1

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Editorial: The ecology, diversity and migration pattern of aquatic organisms in a changing climate

Frontiers in Ecology and Evolution (2024)

Ahasan Habib Usman Atique M. Belal Hossain Hassan I. Sheikh

EDITORIAL article Front. Ecol. Evol., 26 February 2024Sec. Biogeography and Macroecology Volume 12 - 2024 | https://doi.org/10.3389/fevo.2024.1351858

10.3389/fevo.2024.1351858

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Application of Rebound Hammer Method for Estimating Compressive Strength of Bricks

Journal of Civil Engineering Research (2017)

Md. Roknuzzaman M. Belal Hossain Md. Ibrahim Mostazid Md. Rashedul Haque

The Rebound Hammer strength test, being a non-destructive test, has its advantages of preserving integrity of sample. Besides, the test is relative simple, economical and versatile compared to conventional crushing tests. The method is widely used for testing concretes manufacturers of such rebound hammers usually provide calibrated curves showing the relation of compressive strength and rebound number concrete only. But these hammers can conveniently be used to test stones and bricks also. This paper presents some models for correlation between rebound number and compressive strength of bricks. 10 different samples of brick were collected from different manufacturers and rebound numbers was taken 20 times for each brick, 10 times for horizontal hammer position and 10 times for vertical. The samples were then tested in a universal testing machine to obtain their actual compressive strength. Linear and exponential correlations between average rebound number and compressive strength were established using least square parabola method. Regression coefficients for the proposed models were found to vary from 0.87 to 0.96. The proposed linear model for horizontal hammer position was found to be the better one with a regression coefficient of 0.96 which indicates the acceptability of this model for predicting compressive strength of bricks.

Hammer

Brick

Schmidt hammer

Universal testing machine

Position (finance)

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Assessment of Hypoxic Ischemic Changes in Perinatal Asphyxia of First Ultasonogram of Brain

New Advances in Brain & Critical Care (2020)

MM Hossain Sarker Dd M. Belal Hossain

Background: In in perinatal asphyxia, hypoxic ischemic brain injury remains most serious condition causing significant mortality and long term morbidity. Early detection of intracranial changes and its consequences will enhance timely intervention and better out come. Cranial sonography can be done to assess the abnormalities of brain in perinatal asphyxia. Objectives: The objective of this study was to evaluate usefulness of assessment of Hypoxic Ischemic Changes in perinatal asphyxia of first Ultasonogram of Brain. Methods: This was an observational study conducted from March 2018 to February 2019 at department of radiology and imaging, Dhaka Shishu Children Hospital, Dhaka, Bangladesh. Total 100 neonates with perinatal asphyxia were included in this study. Cranial USG was done in all cases and sonographic abnormalities were evaluated. Result: This study was 56 term (>37 weeks of gestation) and 44 preterm (<37 weeks of gestation) newborn having birth asphyxia were taken as cases in this study. Common cranial sonographic findings of preterm babies were periventricular leukomalacia 29% (13), germinal matrix hemorrhage 14% (6), Intraventricular hemorrhage 11% (5) cerebral oedema 7% (3) and normal 39% (17). Common cranial USG findings in term babies were cerebral oedema 43% (24), intracerebral hemorrhage 5% (3), Focal cerebral infarct 4% (2), Intraventricular hemorrhage 2% (1) and normal 46% (26). Conclusion: This study found that transcranial sonography is useful to identify the abnormalities in brain of asphyxiated neonate and helps to predict the neurodevelopmental outcome. So proper management plan can be done.

Periventricular leukomalacia

Perinatal asphyxia

Echoencephalography

10.33140/nabcc.01.01.03

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Can artificially induced habitat complexity alter macroinvertebrates diversity? A case study from a freshwater wetland ecosystem

Environmental Research Communications (2024)

Md. Ayenuddin Haque Md. Abu Sayed Jewel Usman Atique Sonia Iqbal Sumaiya Akter

Abstract Habitat complexity can enhance the resilience of wetlands against environmental stressors such as extreme weather events, pollution, and habitat loss. The introduction of artificial induced complexity (AIC) can play a significant role in reshaping the macroinvertebrate communities within wetland ecosystems by enhancing habitat quality in protected areas. Therefore, this study was designed to examine the variation of macroinvertebrates community structure in artificially induced complex sanctuary site (SS), partially protected (PP) and open sites (OS) from July 2019-April 2020. AIC in the sanctuary sites was established through the installation of cemented hexapods and ring pipes. Over the study period, a total of 665 macroinvertebrates were gathered, with 55.55% originating from SS, 31.14% from PP, and 18.21% from OS sites. The community consists mainly of Lymnaea acuminatatea and Tubifex tubifex, with the most abundant species being Limnodrillus hoffmeisteri and Branchiura sowerbyi . A notable positive impact of AIC was evident in the increased total abundance and diversity indices of macroinvertebrate communities. The Analysis of Similarity (ANOSIM) revealed significant distinctions in community structures among various intervention types, which was further corroborated by a non-metric multidimensional scaling (nMDS) plot. Similarity of Percentage Analysis (SIMPER) highlighted that Limnodrillus hoffmeisteri made the most significant contribution to the dissimilarity observed among the different intervention types. Canonical Correspondence Analysis (CCA) revealed a close association between the structure of the macroinvertebrate community and three key ecological factors: periphyton biomass, macrophyte cover, and sediment properties. These findings could offer a more effective approach for managers and policymakers engaged in the conservation of macroinvertebrates and the sustainable management of fisheries resources within wetland ecosystems.

Freshwater ecosystem

10.1088/2515-7620/ad3901

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Spatio-temporal distribution of reactive nitrogen species in relation to wheat cultivation in Bangladesh

SN Applied Sciences (2021)

Jatish Chandra Biswas M. Belal Hossain M. Maniruzzaman Md. Mozammel Haque Shirin Akhter

Abstract Farmers generally use more nitrogen fertilizer than others for crop production in Bangladesh because of its visible growth symptoms. Such practice is responsible for extra reactive N (Nr) load to the environment, but data are not available. Nitrous oxide (N 2 O) data were collected from a field trial following static closed-chamber technique, which were used for calibration and validation of DeNitrification and DeComposition model along with soil clay fraction, pH, bulk density and organic carbon contents. The model was well fitted and estimated about 364 g N 2 O–N ha −1 emission in Rajshahi region and only 15 g N 2 O–N ha −1 in Barisal region. District-wise N 2 O–N emissions varied from < 1–15.96 t season −1 . In 2011–2016, N 2 O–N emissions from wheat fields were about 103–129 t yr −1 in Bangladesh. The model estimated nitric oxide (NO), ammonia (NH 3 ) and nitrate (NO 3 ) fluxes varied from 0.012 to 0.447, 7 to 12.5 and 0 to 4.7 kg N ha −1 , respectively, under ambient temperature condition. In about 79% yield variabilities were explainable by N 2 O emission. In dominant wheat growing areas, if sowing is started from 15 to 30 November, N 2 O emission could be reduced by 8–40% with 5–13% reduction in yields compared to 10 November sowing. In similar areas and same sowing date with 1.5 °C temperature rise, N 2 O emission may increase by 8–45% and wheat yield might reduce by about 4–8%. Time of seeding and other cultural management in wheat cultivation would be the main avenue for reducing Nr loads to the environment.

Nitrous oxide

Reactive nitrogen

Growing season

10.1007/s42452-020-04120-z

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Genetic Variation of Three Populations of Indian Frog (Hoplobatrachus tigerinus) Revealed by Allozyme Marker

International Journal of Zoological Research (2012)

Md Rakeb‐Ul Islam M. Belal Hossain

10.3923/ijzr.2012.150.156

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Seasonal Variations in Grain Yield, Greenhouse Gas Emissions and Carbon Sequestration for Maize Cultivation in Bangladesh

Sustainability (2022)

Jatish Chandra Biswas Md. Mozammel Haque M. Belal Hossain M. Maniruzzaman Taslima Zahan

Rationale: Greenhouse gas (GHG) emissions from crop agriculture are of great concern in the context of changing climatic conditions; however, in most cases, data based on lifecycle assessments are not available for grain yield variations or the carbon footprint of maize. The current study aimed to determine net carbon emissions and sequestration for maize grown in Bangladesh. Methods: The static closed-chamber technique was used to determine total GHG emissions using data on GHG emissions from maize fields and secondary sources for inputs. A secondary source for regional yield data was used in the current study. GHG emission intensity is defined as the ratio of total emissions to grain yield. The net GHG emission/carbon sequestration was determined by subtracting total GHG emissions (CO2 eq.) from net primary production (NPP). Results: Grain yields varied from 1590 to 9300 kg ha−1 in the wet season and from 680 to 11,820 kg ha−1 in the dry season. GHG emission intensities were 0.53–2.21 and 0.37–1.70 kg CO2 eq. kg−1 grain in the wet and dry seasons, respectively. In Bangladesh, the total estimated GHG emissions were 1.66–4.09 million tonnes (MT) CO2 eq. from 2015 to 2020, whereas the net total CO2 sequestration was 1.51–3.91 MT. The net CO2 sequestration rates were 984.3–5757.4 kg ha−1 in the wet season and 1188.62–5757.39 kg ha−1 in the dry season. This study observed spatial variations in carbon emissions and sequestration depending on growing seasons. In the rice–maize pattern, maize sequestered about 1.23 MT CO2 eq. per year−1, but rice emitted about 0.16 MT CO2 eq. per year−1. This study showed potential spatiotemporal variations in carbon footprints. Recommendation: Special care is needed to improve maize grain yields in the wet season. Fertiliser and water use efficiencies need to be improved to minimise GHG emissions under changing climatic conditions. Efforts to increase the area under cultivation with rice–maize or other non-rice crop-based cropping systems are needed to augment CO2 sequestration. The generation of a regional data bank on carbon footprints would be beneficial for combating the impact of climate change.

Carbon Footprint

Dry season

10.3390/su14159144

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Risk Factors of Community-Acquired Pneumonia Among Under-Five Children in a Tertiary Level Hospital in Rajshahi

TAJ Journal of Teachers Association (2023)

Chaman Ara Laila Shamima Sharmin Fardoushi Begum Sanchita Sarker M. Belal Hossain

Introduction: Community-acquired pneumonia (CAP) top the list of causes of under-five children mortality worldwide. Therefore, properly assessing and controlling these risk factors may help decrease the morbidity and mortality in under-five children suffering from CAP in Bangladesh and thereby help improve the quality of life of our future generation. Objective: To assess the risk factors of CAP among under-five children ( 2-59 months ) in a tertiary-level hospital in Rajshahi. Materials and methods: This case-control study was carried out in the Department of Pediatrics and EPI Center of Rajshahi Medical College Hospital, RMCH, from January 2017 to December 2018 to determine the risk factors of CAP among children under five. For this study, 246 children aged two months to 59 months were selected by purposive sampling. One hundred twenty-three were cases that were taken indoors, and 123 were healthy controls taken from the outpatient department & EPI center. After taking written consent from guardians, history was taken, and a physical examination was done. All information was recorded in a predesigned data sheet. The chi-square test and odds ratio were used to demonstrate significance. Results: Among 246 children, more patients of both groups were male and came from rural areas. Cases were predominantly under 12 months and came from lower socioeconomic status. A statistically significant association was found between social class and CAP (<0.001); the father's literacy was inversely related to CAP (p-value <0.001). Types of housing, living room ventilation, overcrowding, fuel and cookers used for cooking, parental smoking, malnutrition, history of diarrhea and presence of anemia, prematurity, and low birth weight were significantly associated with CAP (p-value <0.05). Conclusion: Proper assessment of these risk factors and controlling them may help decrease the morbidity and mortality in under-five children suffering from CAP in Bangladesh and thereby help improve the quality of life of our future generation. TAJ 2022; 36: No-1: 23-31

Overcrowding

10.3329/taj.v36i1.68276

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Enhancement of length of ultimate fibre cells through induced mutation in jute (CorchorUs olitorius L.)

Indian Journal of Genetics and Plant Breeding (The) (2006)

Firoz Hossain M. Belal Hossain

Corchorus olitorius

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