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Gunshot injury to spine:An institutional experience of management and complications from a developing country

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Chinese Journal of Traumatology 2020年第6期23卷 324-328页

作者： mir ibrahim sajid Bushra Ahmad Shaikh Danish Mahmood Aneela Darbar Medical College Aga Khan UniversityKarachi74880Pakistan Department of Neurosurgery Aga Khan University HospitalKarachi74880Pakistan

Purpose Gunshot wounds are the second leading cause of spinal cord *** intervention for gunshot injury to the spine carries a high rate of *** is a scarcity of data on civilian gunshot injuries to the spine in *** 60 cases over the last 10 years have been recoded,with unusual presentation and neurological *** it is imperative to fill this gap in data,by reviewing cases of civilian gunshot injuries to spine presenting at a tertiary care hospital(Aga Khan University Hospital,Karachi).Methods This is a retrospective cohort *** of all ages who presented to the emergency department of Aga Khan University Hospital,with gunshot injuries to spine between January 2005 and December 2016 were included in the *** were collected on neurological status(American Spinal Injury Association score was used for the initial and follow-up neurological assessment),extent of cord transection,motor and sensory *** patients were further grouped into those with cord transection,and those with fractures of the bony spine but an intact spinal *** patients were then followed and the outcomes were *** A total of 40 patients were *** mean±SD of patients age was(30.9±9.5)*** the 40 patients with gunshot wounds,31 had the medical imaging performed at the facility,and hence they were included in this *** remaining 9 patients were excluded from this additional *** patients were managed surgically and 27 patients underwent the conservative *** mean±SD of follow-up was(8.7±7.2)*** our study,the thoracic spine was the most commonly injured region in gunshot *** the 31 patients with medical imaging performed at our institute,17(54.8%)had cord transection,of whom 8(47%)ultimately developed *** The prognosis of gunshot injuries to the spine can be varied depending on whether the spinal cord is intact or ***

关键词： Hospital management Cord transection Prognostic predictors Gunshot injury Spinal trauma

On the Zeros of a Special Class of Polynomials

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Journal of Mathematical Research with Applications 2024年第4期44卷 470-474页

作者： Mahnaz Shafi CHISHTI Vipin Kumar TYAGI Mohammad ibrahim mir School of Basic and Applied Sciences Shobhit Institute of Engineering and Technology (Deemed to be University) Department of Mathematics University of KashmirSouth Campus

Let P be a complex polynomial of the form P （z）=（λz-a）mΠj=1n-m（z-zj）,where|zj|≥1,1≤j≤*** aim of this paper is to obtain generalisation of a result due to Zargar and Manzoor and a result due to mir,Nazir and... 详细信息

关键词： bound coefficient polynomial zeros

Quantile Version of Mathai-Haubold Entropy of Order Statistics

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Computer Modeling in Engineering & Sciences 2021年第9期128卷 907-925页

作者： ibrahim M.Almanjahie Javid Gani Dar Amer ibrahim Al-Omari Aijaz mir Department of Mathematics College of ScienceKing Khalid UniversityAbha62529Saudi Arabia Statistical Research and Studies Support Unit King Khalid UniversityAbha62529Saudi Arabia Department of Mathematical Sciences IUSTKashmir192231India Department of Mathematics Faculty of ScienceAl al-Bayt UniversityMafraq25113Jordan Department of Mathematics Govt.Degree College KilamHigher EducationJ&K192231India

Many researchers measure the uncertainty of a random variable using quantile-based entropy *** techniques are useful in engineering applications and have some exceptional characteristics than their distribution function *** order statistics,the key focus of this article is to propose new quantile-based Mathai-Haubold entropy and investigate its *** divergence measure of theMathai-Haubold is also considered and some of its properties are ***,based on order statistics,we propose the residual entropy of the quantile-based Mathai-Haubold and some of its property results are *** performance of the proposed quantile-based Mathai-Haubold entropy is investigated by simulation ***,a real data application is used to compare our proposed quantile-based entropy to the existing quantile *** results reveal the outperformance of our proposed entropy to the other entropies.

关键词： Shannon entropy Mathai-Haubold entropy quantile function residual entropy order statistics failure time reliability measures

Generalized Class of Mean Estimators with Known Measures for Outliers Treatment

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Computer Systems Science & Engineering 2021年第7期38卷 1-15页

作者： ibrahim M.Almanjahie Amer ibrahim Al-Omari Emmanuel J.Ekpenyong mir Subzar Department of Mathematics College of ScienceKing Khalid UniversityAbha62529Saudi Arabia Statistical Research and Studies Support Unit King Khalid UniversityAbha62529Saudi Arabia Department of Mathematics Faculty of ScienceAl al-Bayt UniversityMafraq25113Jordan Department of Statistics Michael Okpara University of AgricultureUmudikeAbiaNigeria Jammu and Kashmir Institute of Mathematical Sciences Srinagar190008India

In estimation theory,the researchers have put their efforts to develop some estimators of population mean which may give more precise results when adopting ordinary least squares(OLS)method or robust regression techniques for estimating regression *** when the correlation is negative and the outliers are presented,the results can be distorted and the OLS-type estimators may give misleading estimates or highly biased ***,this paper mainly focuses on such issues through the use of non-conventional measures of dispersion and a robust estimation ***,we have proposed generalized estimators by using the ancillary information of non-conventional measures of dispersion(Gini’s mean difference,Downton’s method and probabilityweighted moment)using ordinary least squares and then finally adopting the Huber M-estimation technique on the suggested *** proposed estimators are investigated in the presence of outliers in both situations of negative and positive correlation between study and auxiliary *** comparisons and real data application are provided to show the strength of the proposed generalized *** is found that the proposed generalized Huber-M-type estimators are more efficient than the suggested generalized estimators under the OLS estimation method considered in this *** new proposed estimators will be useful in the future for data analysis and making decisions.

关键词： Product estimators ratio estimators regression estimators ordinary least square Huber M mean squared error efficiency

The Robust Regression Methods for Estimating of Finite Population Mean Based on SRSWOR in Case of Outliers

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Computers, Materials & Continua 2020年第10期65卷 125-138页

作者： mir Subzar Amer ibrahim Al-Omari Ayed R.A.Alanzi Division of Agricultural Statistics SKUAST-K Shalimar190025India Department of Mathematics Faculty of ScienceAl al-Bayt UniversityMafraq25113Jordan Department of Mathematics College of Science and Human Studies at HotatSudairMajmaah UniversityMajmaah11952Saudi Arabia

The ordinary least square(OLS)method is commonly used in regression *** in the presence of outlier in the data,its results are ***,the robust regression methods have been suggested for a long time as alternatives to the OLS to solve the outliers *** the present study,new ratio type estimators of finite population mean are suggested using simple random sampling without replacement(SRSWOR)utilizing the supplementary information in Bowley’s coefficient of skewness with *** these proposed estimators,we have used the OLS,Huber-M,Mallows GM-estimate,Schweppe GM-estimate,and SIS GM-estimate methods for estimating the population ***,the mean square error(MSE)equations of various estimators are obtained and compared with the OLS *** for skewed distributions as the Gamma distribution support the results,and an application of real data set containing outliers is considered for illustration.

关键词： Efficiency GM-estimates Huber-M ordinary least square ratio type estimators

Asmir156:沙蓬干旱记忆分子调控网络的潜在枢纽

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生物学杂志 2024年第4期41卷 1-10页

作者：房庭舟 AWUKU ibrahim 燕霞钱朝菊范兴科赵鹏姝廖钰秋史梁马小飞中国科学院西北生态环境资源研究院兰州730030

为探索mirNA-mRNA如何参与沙蓬干旱响应和干旱记忆,选择沙蓬干旱敏感生态型AEX为植物材料,开展3轮干旱-复水循环实验后进行转录组和sRNA测序。分别鉴定出341个和7858个响应干旱胁迫的沙蓬mirNA(DEMIs)和mRNA(DEMs)。DEMI-DEM调控网络构... 详细信息

为探索mirNA-mRNA如何参与沙蓬干旱响应和干旱记忆,选择沙蓬干旱敏感生态型AEX为植物材料,开展3轮干旱-复水循环实验后进行转录组和sRNA测序。分别鉴定出341个和7858个响应干旱胁迫的沙蓬mirNA(DEMIs)和mRNA(DEMs)。DEMI-DEM调控网络构建表明,24个沙蓬DEMIs参与调控1423个DEMs,这些靶基因主要参与细胞分化功能。鉴定出两个干旱记忆mirNA(DMMIs)mir156和mir6173,分别调控11个和6个干旱记忆基因(DMGs)。mir156的靶基因包括3个转录因子(TF)AsRWP-RK、AsC3H11和AsWRKY33;mir6173的靶基因包括两个GST(谷胱甘肽S转移酶)。在先前的研究中,AsC3H11和AsWRKY33作为TF分子开关参与沙蓬干旱记忆分级调控网络,因此,沙蓬mir156可作为“mirNA-转录因子-功能基因”网络的候选枢纽。研究解析了沙蓬干旱响应和干旱记忆的分子调控基础,将为荒漠植物中的抗逆遗传资源开发提供理论依据。

关键词：沙蓬干旱胁迫干旱记忆 mirNA 转录组

Stress Analysis of Thin-Walled Pressure Vessels

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Modern Mechanical Engineering 2015年第1期5卷 1-9页

作者： Ahmed ibrahim Yeong Ryu mir Saidpour Mechanical Engineering Technology Farmingdale State College Farmingdale New York USA

This paper discusses the stresses developed in a thin-walled pressure vessels. Pressure vessels (cylindrical or spherical) are designed to hold gases or liquids at a pressure substantially higher than the ambient pressure. Equations of static equilibrium along with the free body diagrams will be used to determine the normal stresses in the circumferential or hoop direction and in the longitudinal or axial direction. A case study of internal pressure developed in a soda can was determined by measuring the elastic strains of the surface of the soda can through strain gages attached to the can and connected to Strain indicator Vishay model 3800.

关键词： Stress Analysis Thin-Walled Pressure Vessel

Assessment of ecological risk for heavy metals in surface sediment of an urban river in a developing country

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International Journal of Sediment Research 2023年第6期38卷 834-846页

作者： Md Saiful Islam Md Humayun Kabir mir Mohammad Ali Md Towhidul Islam Asfia Niger Md Humayun Kabir Zulhilmi Ismail Sujat Ahmed Khalid A.ibrahim Abubakr M.Idris Department of Soil Science Patuakhali Science and Technology University Department of Environmental Science and Resource Management Mawlana Bhashani Science and Technology University Department of Aquaculture Sher-e-Bangla Agricultural University Department of Soil Science Bangabandhu Sheikh Mujibur Rahman Agricultural University Centre for River and Coastal Engineering(CRCE) Universiti Teknologi Malaysia(UTM) Department of Water & Environmental Engineering Faculty of Civil EngineeringUniversiti Teknologi Malaysia(UTM) Environment Center for People & Environ(CPE) Department of Biology College of ScienceKing Khalid University Center for Environment and Tourism Studies and Research King Khalid University Department of Chemistry College of ScienceKing Khalid University Research Center for Advanced Materials Science(RCAMS) King Khalid University

The speed of increasing threats to the riverine water resources makes it more critical to protect the health of Old Brahmaputra River *** current study was done to investigate the concentrations,distributions,sources,and ecological risk of heavy metals in surface sediment from the Old Brahmaputra River,*** were collected from seven sites and analyzed with an inductively coupled plasma-mass spectrometer(ICP-MS).The results showed that mean concentrations(mg/kg) of heavy metals were in the order of nickel(Ni)(44.69)> chromium(Cr)(30.16)> lead(Pb)(19.31)>copper(Cu)(17.84)> cadmium(Cd)(3.94)> arsenic(As)(2.73).The contamination factor(CF),pollution load index(PLI),enrichment factor(EF),and geo-accumulation index(Igeo) indicated low to moderate *** unit analysis revealed that the studied metals from all stations posed low *** sediment of the study river was uncontaminated to moderately contaminated,posing a minimal ecological ***,Cr,Ni,and Pb originated from anthropogenic sources rather than geogenic sources,and caused the severity of *** this regard,pollutant-based intensive monitoring of heavy metals and holistic ecological risk assessments are required to maintain a sound and healthy aquatic environment in the river.

关键词： Heavy metals Sediment quality Ecological risk Old Brahmaputra river Source identification

Toxicity assessment of polyethylene microplastics in combination with a mix of emerging pollutants on Physalaemus cuvieri tadpoles

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Journal of Environmental Sciences 2023年第5期127卷 465-482页

作者： Amanda Pereira da Costa Araújo Thiarlen Marinho da Luz Mohamed Ahmed ibrahim Ahmed mir Mohammad Ali Md.Mostafizur Rahman Bojan Nataraj Daniela de Melo e Silva DamiàBarceló Guilherme Malafaia Post-Graduation Program in Environmental Sciences Federal University of GoiásGoianiaGO 74690-970Brazil Laboratory of Toxicology Applied to the Environment Goiano Federal InstituteUrutaíGO 75790-000Brazil Plant Protection Department Faculty of AgricultureAssiut UniversityAssiut 71526Egypt Department of Aquaculture Faculty of FisheriesAquaculture&Marine ScienceSher-e-Bangla Agricultural UniversityDhaka 1207Bangladesh Department of Environmental Sciences Jahangirnagar UniversitySavar 1342Bangladesh Unit of Toxicology Department of ZoologySchool of Life SciencesBharathiar UniversityCoimbatore 641046India Laboratory of Environmental Mutagenesis Federal University of GoiásGoianiaGO 74690-970Brazil Catalan Institute for Water Research(ICRA-CERCA) H_(2)O BuildingScientific and Technological Park of the University of GironaEmili Grahit 101Girona 17003Spain Water and Soil Quality Research Group Department of Environmental ChemistryInstitute of Environmental Assessment and Water Research(IDAEA-CSIC)JordiGirona 1826Barcelona 08034Spain Post-Graduation Program in Conservation of Cerrado Natural Resources Goiano Federal InstituteUrutaíGO 75790-000Brazil Post-Graduation Program in Ecology Conservationand BiodiversityFederal University of UberlandiaUberlandiaMG 38400-902Brazil Post-Graduation Programa in Biotechnology and Biodiversity Federal University of GoiásGoianiaGO 74605-050Brazil

Studies in recent years have shown that aquatic pollution by microplastics(MPs)can be considered to pose additional stress to amphibian ***,our knowledge of how MPs affect amphibians is very rudimentary,and even more limited is our understanding of their effects in combination with other emerging ***,we aimed to evaluate the possible toxicity of polyethylene MPs(PE-MPs)(alone or in combination with a mix of pollutants)on the health of Physalaemus cuvieri *** 30 days of exposure,multiple biomarkers were measured,including morphological,biometric,and developmental indices,behavioral parameters,mutagenicity,cytotoxicity,antioxidant and cholinesterase responses,as well as the uptake and accumulation of PE-MPs in *** on the results,there was no significant change in any of the parameters measured in tadpoles exposed to treatments,but induced stress was observed in tadpoles exposed to PE-MPs combined with themixture of pollutants,reflecting significant changes in physiological and biochemical *** principal component analysis(PCA)and integrated biomarker response(IBR)assessment,effects induced by pollutants in each test group were distinguished,confirming that the exposure of *** tadpoles to the PE-MPs in combination with a mix of emerging pollutants induces an enhanced stress response,although the uptake and accumulation of PE-MPs in these animalswas ***,our study provides newinsight into the danger to amphibians of MPs coexisting with other pollutants in aquatic environments.

关键词： Amphibians Environmental toxicology Micropollutants Emerging pollutants Aquatic pollution Biomarkers