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Applicability of semi-destructive method to derive allometric model for estimating aboveground biomass and carbon stock in the Hill zone of Bangladesh

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Journal of Forestry Research 2020年第4期31卷 1235-1245页

作者： Hossain Mahmood Mohammad Raqibul Hasan Siddique S.M.Zahirul Islam S.M.Rubaiot Abdullah Henry Matieu Md.Zaheer Iqbal mariam akhter Forestry and Wood Technology Discipline Khulna UniversityKhulna 9208Bangladesh Forest Inventory Division Bangladesh Forest Research InstituteChittagong 4000Bangladesh Food and Agriculture Organization Rome 00153Italy Bangladesh Forest Department Bana bhabanAgargaonDhaka 1207Bangladesh

Biomass estimation using allometric models is a nondestructive and popular *** of an allometric model can influence the accuracy of biomass *** Forest Department initiated a nationwide forest inventory to assess biomass and carbon stocks in trees and *** relationship between carbon storage and sequestration in a forest has implications for climate change mitigation in terms of the carbon sink in *** part of the national forest inventory,we aimed to derive multi-species biomass models for the hill zone of Bangladesh and to determine the carbon concentration in tree components(leaves,branches,bark and stem).In total,175 trees of 14 species were sampled and a semi-destructive method was used to develop a biomass model,which included development of smaller branch(base dia<7 cm)biomass allometry and volume estimation of bigger branches and *** best model of leaf,branches,and bark showed lower values for adjusted R2(0.3152-0.8043)and model efficiency(0.436-0.643),hence these models were not recommended to estimate *** best fit model of stem and total aboveground biomass(TAGB)showed higher model efficiency 0.948 and 0.837,respectively,and this model was recommended for estimation of tree biomass for the hill zone of *** best fit allometric biomass model for stem was Ln(Stem)=-10.7248+1.6094*Ln(D)+1.323*Ln(H)+1.1469*Ln(W);the best fit model for TAGB was Ln(TAGB)=-6.6937+0.809*Ln(D^2*H*W),where DBH=Diameter at Breast Height,H=Total Height,W=Wood *** two most frequently used pan-tropical biomass models showed lower model efficiency(0.667 to 0.697)compared to our derived TAGB *** best fit TAGB model proved applicable for accurate estimation of TAGB for the hill zone of *** concentration varied significantly(p<0.05)by species and tree *** concentration(48-49%)of carbon was recorded in the tree stem.

关键词： Allometry Bangladesh Biomass Carbon Forest inventory

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Development and Evaluation of Species-Specific Biomass Models for Most Common Timber and Fuelwood Species of Bangladesh

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Open Journal of Forestry 2020年第1期10卷 172-185页

作者： Mahmood Hossain Mohammad Raqibul Hasan Siddique S. M. Rubaiot Abdullah Chameli Saha S. M. Zahirul Islam Md. Zaheer Iqbal mariam akhter Forestry and Wood Technology Discipline Khulna University Khulna Bangladesh Forest Inventory Division Bangladesh Forest Research Institute Chittagong Bangladesh Deputy Conservator of Forests Bangladesh Forest Department Dhaka Bangladesh Bangladesh Forest Department Assistant Conservator of Forest Bangladesh Forest Department Dhaka Bangladesh

Allometric biomass models are efficient tools to estimate biomass of trees and forest stands in a non-destructive way. Development of species-specific allometric biomass models requires extensive fieldwork and time. Our study aimed to generate species-specific allometric biomass models for the most common fuelwood and timber species of Bangladesh. We also wanted to evaluate the performances of our models relative to the performances of regional and commonly used pan-tropical biomass models. We used semi-destructive method that incorporates tree-level volume, species-specific biomass expansion factor (BEF), and wood density. We considered four base models, 1) Ln (biomass) = a + bLn (D);2) Ln (biomass) = a + bLn (H);3) Ln (Biomass) = a + bLn (D^2H);4) Ln (Biomass) = a + bLn (D) + cLn (H) to develop species-specific best-fitted models for Total Above-Ground Biomass (TAGB) and stem biomass. The best-fitted model for each species was selected by the lowest value of Akaike Information Criterion (AIC), Residual Standard Error (RSE) and Root Mean Square Error (RMSE). The derived best-fitted models were then evaluated with respect to regional and pan-tropical models using a separate set of observed data. This evaluation was conducted by computing ME (Model Efficiency) and MPE (Model Prediction Error). The best-fitted allometric biomass models have shown higher model efficiency (0.85 to 0.99 at scale 1) and the lowest model prediction error (-8.94% to 5.27%) compared to the regional and pan-tropical models. All the examined regional and pan-tropical biomass models showed different magnitude of ME and MPE. Some models showed higher level (>0.90 at scale 1) of ME compared to the best-fitted specific species biomass model.

关键词： Allometry Bangladesh Biomass Fuelwood Timber Pan-Tropical Model Regional Common Model

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A multi-purpose National Forest Inventory in Bangladesh:design,operationalisation and key results

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Forest Ecosystems 2021年第1期8卷 151-172页

作者： Matieu Henry Zaheer Iqbal Kristofer Johnson mariam akhter Liam Costello Charles Scott Rashed Jalal Md.akhter Hossain Nikhil Chakma Olaf Kuegler Hossain Mahmood Rajib Mahamud Mohammad Raqibul Hasan Siddique Khaled Misbahuzzaman Mohammad Main Uddin Mohammed Al Amin Farid Uddin Ahmed Gael Sola Md.Baktiar Siddiqui Luca Birigazzi Mahmudur Rahman Ilias Animon Saimunnahar Ritu Laskar Muqsudur Rahman Aminul Islam Heather Hayden Frida Sidik Mondal Falgoonee Kumar Rakibul Hassan Mukul Hossain Nishad Ariful Hoque Belal Asif Reza Anik Abdul Khaleque Md.Shaheduzzaman Syed Shahadat Hossain Tariq Aziz Md.Tauhidor Rahaman Ruhul Mohaiman Patrick Meyer Purnata Chakma A.Z.M.Manzoor Rashid Sourav Das Shrabanti Hira Mohammed Jashimuddin Mohammad Mahfuzur Rahman Karl Wurster Sarder Nasir Uddin Abul Kalam Azad S.M.Zahirul Islam Laurent Saint-André Food and Agriculture Organization of the United Nations Viale delle Terme di Caracalla00153 RomeItaly Forest Department Ministry of EnvironmentForests and Climate ChangeBan BhabanShere Bangla NagarAgargaonDhaka 1207Bangladesh School of Ecosystem and Forest Sciences University of MelbourneParkville VictoriaMelbourne 3010Australia United States Forest Service(USFS)/SilvaCarbon WashingtonD.CUSA Institute of Forestry and Environmental Sciences(IFES) University of ChittagongChattogramBangladesh Department of Forestry and Environmental Science Rangamati Science and Technology UniversityRangamatiBangladesh Forestry and Wood Technology Discipline Khulna UniversityKhulnaBangladesh School of Biological Sciences The University of QueenslandQLDBrisbane 4072Australia Arannyak Foundation DhakaBangladesh United Nations Framework Convention on Climate Change(UNFCCC) BonnGermany Bangladesh Space Research and Remote Sensing Organization(SPARRSO) DhakaBangladesh Institute for Marine Research and Observation Ministry of Marine Affairs and FisheriesNegaraBaliIndonesia Department of Agricultural Economics Bangabandhu Sheikh Mujibur Rahman Agricultural University(BSMRAU)GazipurBangladesh Bangladesh Bureau of Statistics(BBS) DhakaBangladesh Institute of Statistical Research and Training University of DhakaDhakaBangladesh United States Agency for International Development(USAID) DhakaBangladesh Department of Forestry and Environmental Science Shahjalal University of Science and TechnologyKumargaonSylhetBangladesh Department of Biological Sciences Faculty of Science and EngineeringMacquarie UniversitySydneyAustralia Bangladesh National Herbarium(BNH) Zoo RoadMirpurDhakaBangladesh Bangladesh Forest Research Institute(BFRI) SholoshaharChottogramBangladesh National Research Institute for Agriculture Food and Environment(INRAE)ParisFrance

Background:National forest inventory and forest monitoring systems are more important than ever considering continued global degradation of trees and *** systems are especially important in a country like Bangladesh,which is characterised by a large population density,climate change vulnerability and dependence on natural *** the aim of supporting the Government’s actions towards sustainable forest management through reliable information,the Bangladesh Forest Inventory(BFI)was designed and implemented through three components:biophysical inventory,socio-economic survey and remote sensing-based land cover *** article documents the approach undertaken by the Forest Department under the Ministry of Environment,Forests and Climate Change to establish the BFI as a multipurpose,efficient,accurate and replicable national forest *** design,operationalization and some key results of the process are ***:The BFI takes advantage of the latest and most well-accepted technological and methodological ***,it was designed through a collaborative process which drew from the experience and knowledge of multiple national and international ***,1781 field plots were visited,6400 households were surveyed,and a national land cover map for the year 2015 was *** technological enhancements include a semi-automated segmentation approach for developing the wall-to-wall land cover map,an object-based national land characterisation system,consistent estimates between sample-based and mapped land cover areas,use of mobile apps for tree species identification and data collection,and use of differential global positioning system for referencing plot ***:Seven criteria,and multiple associated indicators,were developed for monitoring progress towards sustainable forest management goals,informing management decisions,and national and international reporting needs.A wide range of biophysica

关键词： South-Asia Forest monitoring Innovation Remote sensing Socio-economic Partnership Ecosystem services Carbon sequestration

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Numerical study of homogeneous–heterogeneous reactions on stagnation point flow of ferrofluid with non-linear slip condition

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Chinese Journal of Chemical Engineering 2017年第1期25卷 11-17页

作者： Zaheer Abbas mariam Sheikh Department of Mathematics The Islamia University of Bahalwalpur Bahawalpur 63100 Pakistan

This study deals with the stagnation point flow of ferrofluid over a flat plate with non-linear slip boundary condition in the presence of homogeneous-heterogeneous *** kinds of ferroparticles,namely,magnetite(Fe_3O_4),cobalt ferrite(CoFe_2O_4) and manganese zinc ferrite(Mn-ZnFe_2O_4) are taken into account with water and kerosene as conventional base *** developed model of homogeneous-heterogeneous reactions in boundary layer flow with equal and unequal diffusivities for reactant and autocatalysis is *** governing partial differential equations are converted into system of non-linear ordinary differential equations by mean of similarity *** ordinary differential equations are integrated numerically using shooting *** effects of pertinent parameters on velocity and concentration profiles are presented graphically and *** found that in the presence of Fe_3O_4-kerosene and CoFe_2O_4-kerosene,velocity profiles increase for large values of α and β whereas there is a decrement in concentration profiles with increasing values of if and K_***,the comparison between non-magnetic(A1_2O_3) and magnetic Fe_3O_4 nanoparticles is given in tabular form.

关键词： Ferrofluid Stagnation point flow Homogeneous-heterogeneous reactions Generalized slip boundary condition Numerical solution

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Impact of pediatric traumatic brain injury on hippocampal neurogenesis

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Neural Regeneration Research 2021年第5期16卷 926-933页

作者： mariam Rizk Justin Vu Zhi Zhang Department of Natural Sciences University of Michigan-DearbornDearbornMIUSA

Traumatic brain injury(TBI)is a major cause of mortality and morbidity in the pediatric *** advances in medical care,the mortality rate of pediatric TBI has ***,more children and adolescents are living with TBI-related cognitive and emotional impairments,which negatively affects the quality of their *** hippocampal neurogenesis plays an important role in cognition and mood *** in adult hippocampal neurogenesis are associated with a variety of neurological and neurodegenerative diseases,including *** endogenous hippocampal neurogenesis after TBI merits significant ***,TBI affects the function of neural stem/progenitor cells in the dentate gyrus of hippocampus,which results in aberrant migration and impaired dendrite development of adult-born ***,a better understanding of adult hippocampal neurogenesis after TBI can facilitate a more successful neuro-restoration of damage in immature *** injuries,such as neuroinflammation and oxidative stress,exert a significant impact on hippocampal ***,a variety of therapeutic approaches have been proposed for ameliorating secondary TBI *** this review,we discuss the uniqueness of pediatric TBI,adult hippocampal neurogenesis after pediatric TBI,and current efforts that promote neuroprotection to the developing brains,which can be leveraged to facilitate neuroregeneration.

关键词： adult hippocampal neurogenesis astrocytes development microglia neuroinflammation neuroregeneration oxidative stress pediatric traumatic brain injury plasticity stem cell

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Bubble hydrodynamic influence on oxygen transfer rate at presence of cationic and anionic surfactants in electroflotation process

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Journal of Hydrodynamics 2013年第5期25卷 747-754页

作者： KOTTI mariam KSENTINI Issam BEN MANSOUR Lassaad Laboratory of Applied Fluid Mechanics Process Engineering and EnvironmentScience Faculty of Sfax

In this work, the effects of the presence of surfactants in the liquid phase and the hydrodynamic regime of the bubble flow on the oxygen transfer rate were investigated in an electroflotation process in batch mode. The volumetric mass transfer coefficient KLα and the oxygenation capacity were evaluated to improve the performances of the electroflotation process in terms of oxygenation. In order to evaluate the liquid-side mass transfer coefficient KLα the volumetric mass transfer coefficient KLα was dissociated into KL and the specific interracial area （a） since the last one was obtained from the gas hold-up and the bubble diameter. The effect of Reynolds number which define the hydrodynamic of the bubble flow has been also studied. Models of KLa and KL have been established to show the effects of the hydrodynamic parameters and liquid phase characteristics on the oxygen transfer rate.

关键词： electroflotation mass transfer coefficient hydrodynamic parameters surfactant

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Information Streams in Health Facilities: The Case of Uganda

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Data Intelligence 2022年第4期4卷 882-898,1048页

作者： mariam Basajja Mutwalibi Nambobi Leiden Institute of Advanced Computer Science Leiden University1011NCAmsterdamthe Netherlands Kampala International University 256 KampalaUganda

With the prevailing COVID-19 pandemic, the lack of digitally-recorded and connected health data poses a challenge for analysing the situation. Virus outbreaks, such as the current pandemic, allow for the optimisation and reuse of data, which can be beneficial in managing future outbreaks. However, there is a general lack of knowledge about the actual flow of information in health facilities, which is also the case in Uganda. In Uganda, where this case study was conducted, there is no comprehensive knowledge about what type of data is collected or how it is collected along the journey of a patient through a health facility. This study investigates information flows of clinical patient data in health facilities in Uganda. The study found that almost all health facilities in Uganda store patient information in paper files on shelves. Hospitals in Uganda are provided with paper tools, such as reporting forms, registers and manuals, in which district data is collected as aggregate data and submitted in the form of digital reports to the Ministry of Health Resource Center. These reporting forms are not digitised and, thus, not machine-actionable. Hence, it is not easy for health facilities, researchers, and others to find and access patient and research data. It is also not easy to reuse and connect this data with other digital health data worldwide, leading to the incorrect conclusion that there is less health data in Uganda. The a FAIR architecture has the potential to solve such problems and facilitate the transition from paper to digital records in the Uganda health system.

关键词： Data management Information flow FAIR Guidelines Hospital information system(HIS) Electronic medical record(EMR) Electronic health record(EHR) Patient health record(PHR)

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Sunspot Group Detection and Classification by Dual Stream Convolutional Neural Network Method

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Research in Astronomy and Astrophysics 2024年第9期24卷 248-259页

作者： Nyasha mariam Mkwanda Weixin Tian Junlin Li Hubei Key Laboratory of Intelligent Vision Based Monitoring for Hydroelectric Engineering China Three Gorges UniversityYichang 443002China College of Computer and Information Technology China Three Gorges UniversityYichang 443002China

The automatic detection and analysis of sunspots play a crucial role in understanding solar dynamics and predicting space weather *** paper proposes a novel method for sunspot group detection and classification called the dual stream Convolutional Neural Network with Attention Mechanism(DSCNN-AM).The network consists of two parallel streams each processing different input data allowing for joint processing of spatial and temporal information while classifying *** takes in the white light images as well as the corresponding magnetic images that reveal both the optical and magnetic features of *** extracted features are then fused and processed by fully connected layers to perform detection and *** attention mechanism is further integrated to address the“edge dimming”problem which improves the model’s ability to handle sunspots near the edge of the solar *** network is trained and tested on the SOLAR-STORM1 data *** results demonstrate that the DSCNN-AM achieves superior performance compared to existing methods,with a total accuracy exceeding 90%.

关键词： Sun:magnetic fields Sun:flares (Sun:)sunspots DSCNN Attention mechanism Edge dimming

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Model-based adaptive controller for personalized ventilation and thermal comfort in naturally ventilated spaces

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Building Simulation 2021年第6期14卷 1757-1771页

作者： Dalia Ghaddar mariam Itani Nesreen Ghaddar Kamel Ghali Joseph Zeaiter Mechanical Engineering Department American University of BeirutP.O.Box 11-0236Beirut 1107-2020Lebanon Mechanical Engineering Department Phoenicia UniversityDistrict of ZahraniLebanon Bahaa and Walid Bassotne Department of Chemical Engineering and Advanced Energy American University of BeirutBeirutLebanon

This work develops a standalone autonomously controlled personalized ventilation(PV)unit in a naturally ventilated(NV)office space to maintain acceptable thermal comfort{TQ under steady and transient indoor conditions and activity *** NV-PV proportional integral derivative(PID)controller adjusts the PV supply temperature(7spv)at the occupant set flow rate(Qspv)based on predicted TC using a regression *** target TC level that the controller attains at all times is between 0(neutral)and 1(slightly comfortable).Process transfer functions were developed and then used to find the adaptive PID tuning coefficients using the Internal Model Control(IMC)*** controller was tested in a case study at indoor temperature range of 25 to 33℃ with relative humidity range of 55%and 80%.It was shown that the NV-PV controller adjusted Tspv to maintain acceptable TC under transients of indoor conditions and metabolic rates.

关键词： adaptive PID controller personalized ventilation natural ventilation thermal comfort

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High prevalence of bla_(CTX-M) in Enterobactcriaceac isolates from the Kingdom of Bahrain

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Asian Pacific Journal of Tropical Medicine 2011年第12期4卷 937-940页

作者： Khalid M Bindayna mariam Murtadha Department of Microbiology Immunology & Infectious DiseasesCollege of Medicine and Medical SciencesArabian Gulf UniversityKingdom of Bahrain Salmaniya Medical Center Ministry of HealthKingdom of Bahrain

Objective:To determine the molecular epidemiology of extended-spectrumβ-lactamase （ESRL） by testing a cohort of clinical ESBL-producing bacterial isolates that were isolated in the Kingdom of ***:ESBL producing Enterabacleriaceae isolates（based on phenotypie tests） were collected from Microbiology Laboratory ot the Salmaniya Medical Complex,Bahrain between January-June *** susceptibility to a panel of antibiotics was performed and blaCTX-M genes were detected by multiplex ***:A total of 230 isolates（Escherichia coli.n=180:Klebsiella pneumoniae,n=50） were studied.98%were CTX-M *** Escherichia coli isolates.65（36.1%） harbored CTXM+TF.M combination and 68（37.8%） had CTX-M *** contrast,for Klebsiella pneumoniae isolates only 5（10.0%） harbored the CTX-M combination,and none had CTX-M *** blaCTX-M gene was found predominantly in urine isolates（n=145/230;63.0%）.Sensitivity to imipenem and nitrofurantoin was 100%and 60%.***-M carriage was associated with the resistance lo fluoroquinolones, trimethoprim-sulfamethoxazole and ***:Our study documentes high prevalence of CTX-M ESBL type among Escherichia call and Klebsiella from the Kingdom of *** apparent dissemination of CTX-M producers could represent a substantial barrier in the treatment of community-acquired *** use of extended-Spectrum cephalosporins. quinolones,and aminoglycosides is compromised,leaving carbapenems as the therapeutic option for severe infections caused by ESBL producers.

关键词： ESBL CTX-M Bahrain Escherichia coli Klebsiella pneumoniae

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