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Influence of Fly Ash and sewage sludge Application on Cadmium and Lead sorption by an Acidic Alfisol

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Pedosphere 2010年第4期20卷 436-445页

作者： s.M.shaheen C.D.TsADILAs Department of soil sciences Faculty of AgricultureUniversity of Kafrelsheikh National Agricultural Research Foundation Institute of Soil Mapping and Classification(Greece)

The safe recycling of fly ash (FA) and sewage sludge (ss) in the agricultural processes comprises an important environmental technology on waste management. soils amended with FA and ss may change their ability to adsorb heavy metals due to either increase of soil pH or decomposition of sludge-borne organic matter. Thus, Cd and Pb sorption was investigated by 1-month incubation under soil moisture content at field capacity and room temperature with an acidic Typic Haploxeroalf from central Greece amended with varying amounts of FA and ss. Batch experiments were conducted by equilibrating the soil samples with CaCl2 solutions containing 0-400 mg Pb L-1 or 0-100 mg Cd L-1. The results showed that the Freundlich equation described well the Cd and Pb sorption. Distribution coefficient (Kd) values of Pb were higher than those of Cd in all the treatments of this study. Application of FA increased Kd values for Cd and Pb to 8.2 and 2.3 times more than the controls, respectively. simultaneous applications of FA and ss caused a Kd increase of 3.8 and 2.1 times compared to the treatments that received only ss for Cd and Pb, respectively. Treatment of ss alone did not significantly change Cd and Pb sorption compared to the controls. The sorption reactions seemed to be mainly affected by soil pH, which was revealed by the significant correlations of Cd and Pb sorption with soil pH. These suggested that fly ash was very useful as a low-cost adsorbent for Cd and Pb and could be used as an ameliorant for biosolid-amended acidic soils.

关键词： ameliorant distribution coefficient Freundlich equation heavy metals soil pH

Unveiling the Optimal Interfacial synergy of Plasma-Modulated Trimetallic Mn-Ni-Co Phosphides:Tailoring Deposition Ratio for Complementary Water splitting

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Energy & Environmental Materials 2023年第2期6卷 129-141页

作者： Kholoud E.salem Amina A.saleh Ghada E.Khedr Basamat s.shaheen Nageh K.Allam Energy Materials Laboratory(EML) School of Sciences and EngineeringThe American University in CairoNew Cairo 11835Egypt

Designing highly active,durable,and nonprecious metal-based bifunctional electrocatalysts for overall water electrolysis is of urgent scientific importance to realize the sustainable hydrogen production,which remains a grand ***,an innovative approach is demonstrated to synthesize flower-like 3D homogenous trimetallic Mn,Ni,Co phosphide catalysts directly on nickel foam via electrodeposition followed by plasma *** electrochemical activity of the catalysts with varying Mn:Ni:Co ratios is assessed to identify the optimal composition,demonstrating that the equimolar trimetallic phosphide yields an outstanding HER catalytic performance with a current density of 10 mA cm^(-2) at an ultra-low overpotential of~14 mV,outperforming the best reported *** is asserted by the DFT calculations,revealing strong interaction of the metals and the P atom,resulting in enhanced water activation and optimized G_(H)^(*)values for the HER ***,this optimal composition appreciably catalyzes the OER by exposing more intrinsic active species in-situ formed on the catalyst surface during the ***,the Mn_(1)-Ni_(1)-Co_(1)-P-(O)/NF catalyst exhibits a decreased overpotential of~289 mV at 10 mA cm^(-2).More importantly,the electrocatalyst sustains perfect durability up to 48 h at a current density of 10 mA cm^(-2) and continued 5000 cycling stability for both HER and ***,the assembled MNC-P/NF||MNC-P/NF full water electrolyzer system attains an extremely low cell voltage of 1.48 V at 10 mA cm^(-2).significantly,the robust stability of the overall system results in a remarkable current retention of~96%after a continuous 50-h ***,this study provides a facile design and a scalable construction of superb bifunctional ternary MNC-phosphide electrocatalysts for efficient electrochemical energy production systems.

关键词： DFT overall water splitting oxygen evolution reaction(OER)/hydrogen evolution reaction(HER) plasma ternary metallic phosphides(MnNiCo)

Association of Hepatitis C Virus Infection and Type 2 Diabetes in Egypt: A Hospital-Based study

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Journal of Diabetes Mellitus 2016年第1期6卷 77-89页

作者： shaimaa B. Abdelaziz Yasmine s. Galal Amal s. sedrak Dina s. shaheen Department of Public Health Cairo University Cairo Egypt Department of Internal Medicine Cairo University Cairo Egypt

Background: The relation between hepatitis C virus (HCV) infection and the development of type 2 diabetes mellitus (T2DM) remains unknown. The aim of this study was to investigate the presence of an association between T2DM and HCV. Methods: A case control study was conducted at the outpatients’ clinics of Kasr El-Aini Hospital (KAH), from October 2013 till March 2014. In this study, 389 HCV patients were selected as cases and 389 healthy controls were also included. Demographic and clinical data were collected using a structured questionnaire. Laboratory investigations including liver function tests (LFT), blood glucose level and radioimmunoblot assay (ELIsA) were performed. Results: Out of 389 HCV cases, 219 (56.3%) were diabetic, whereas 145 (37.3%) were diabetic among the healthy controls. Occurrence of diabetes among cirrhotic patients was 1.7 times higher than non-cirrhotic. Logistic regression showed that residence (P smoking (P = 0.04, OR = 2) were the predictive factors for occurrence of T2DM in HCV patients. Conclusions: In this study, we found a positive association between HCV infection and T2DM. Residence, occupation and smoking were the predictive factors for the association of T2DM in HCV patients, whereas hypertension and BMI were only adjunctive factors.

关键词： HCV Predictive Factors T2DM Cirrhosis

Improvised Technique for Analyzing Data and Detecting Terrorist Attack Using Machine Learning Approach Based on Twitter Data

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Journal of Computer and Communications 2020年第7期8卷 50-62页

作者： Aditi sarker Partha Chakraborty s. M. shaheen sha Mahmuda Khatun Md. Rakib Hasan Kawshik Banerjee Department of Computer science and Engineering Comilla University Cumilla Bangladesh Department of Computer science and Engineering Jahangirnagar University Dhaka Bangladesh Department of Information and Communication Technology Comilla University Cumilla Bangladesh Department of Computer science and Engineering Rajshahi University of Engineering & Technology Rajshahi Bangladesh

social media are interactive computer mediated technology that facilitates the sharing of information via virtual communities and networks. And Twitter is one of the most popular social media for social interaction and microblogging. This paper introduces an improved system model to analyze twitter data and detect terrorist attack event. In this model, a ternary search is used to find the weights of predefined keywords and the Aho-Corasick algorithm is applied to perform pattern matching and assign the weight which is the main contribution of this paper. Weights are categorized into three categories: Terror attack, severe Terror Attack and Normal Data and the weights are used as attributes for classification. K-Nearest Neighbor (KNN) and support Vector Machine (sVM) are two machine learning algorithms used to predict whether a terror attack happened or not. We compare the accuracy with our actual data by using confusion matrix and measure whether our result is right or wrong and the achieved result shows that the proposed model performs better.

关键词： Terrorist Ternary search Aho-Corasick Automata Confusion Matrix

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储罐清洗的化学处理与机械作业

国外油田工程 2000年第7期16卷 48-50页

作者：周爱莲苏开科周润才 s.E.shaheen 江汉石油学院大庆油田设计院

如果只是为了增加储油量 ,清除储罐中的油泥则是一种简单的工作。但是 ,为了从回收原油价值中获取利润 ,在原油中使用油泥转换器是更理想的。除油泥的方法可以是化学法也可以是机械法。本文对这两种方法进行了评价 ,并提出最经济的储罐... 详细信息

如果只是为了增加储油量 ,清除储罐中的油泥则是一种简单的工作。但是 ,为了从回收原油价值中获取利润 ,在原油中使用油泥转换器是更理想的。除油泥的方法可以是化学法也可以是机械法。本文对这两种方法进行了评价 ,并提出最经济的储罐清洗方法。不打开储罐进行清洗无疑是个优势 ,而不添加化学品、不加热或不使用蒸汽 ,对设施及工作人员来说是较安全的。本文讨论的其他方面除了可把油泥转换成国际市场上销售的原油之外 ,亦可避免空气和土壤的污染。此外 ,还给出几个实例 ,实例中介绍了如何在 37天内通过工艺优化将 746 76bbl油泥转化成原油。

关键词：储罐清洗化学处理机械清洗原油回收油罐

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储罐清洗的化学处理与机械作业

石油石化节能 2000年第7期 48-50页

作者：周爱莲苏开科周润才Ｓ．Ｅ．Ｓｈａｈｅｅｎ大庆油田设计院江汉石油学院

关键词：储罐清洗化学处理机械清洗原油回收

Revisiting cerebral endothelial cells in Alzheimer’s disease

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Neural Regeneration Research 2025年第10期20卷 2911-2912页

作者： Amira s.Hanafy Department of Neurosurgery University Hospital BonnBonnGermany

Alzheimer’s disease(AD)is the most common neurodegenerative disorder characterized by slow and progressive decline of cognitive and memory *** only approximately 5%of the cases,AD is familial,as often predisposed by genetic mutations(Hoogmartens et al.,2021),while sporadic AD accounts for approximately 95%of the *** amyloid cascade hypothesis is one of the fundamental hypotheses put out to explain AD pathogenesis as dysregulated homeostasis of amyloid-β(Aβ)peptides that leads to the accumulation of Aβplaques in the parenchyma,an anatomical hallmark of AD.

关键词： Alzheimer Aβ cerebral

Emerging structures and dynamic mechanisms ofγ-secretase for Alzheimer’s disease

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Neural Regeneration Research 2025年第1期20卷 174-180页

作者： Yinglong Miao Michael s.Wolfe Computational Medicine Program and Department of Pharmacology University of North Carolina–Chapel HillChapel HillNCUSA Department of Medicinal Chemistry University of KansasLawrenceKSUSA

γ-secretase,called“the proteasome of the membrane,”is a membrane-embedded protease complex that cleaves 150+peptide substrates with central roles in biology and medicine,including amyloid precursor protein and the Notch family of cell-surface *** inγ-secretase and amyloid precursor protein lead to early-onset familial Alzheimer’s disease.γ-secretase has thus served as a critical drug target for treating familial Alzheimer’s disease and the more common late-onset Alzheimer’s disease as ***,critical gaps remain in understanding the mechanisms of processive proteolysis of substrates,the effects of familial Alzheimer’s disease mutations,and allosteric modulation of substrate cleavage byγ-*** this review,we focus on recent studies of structural dynamic mechanisms ofγ-*** mechanisms,including the“Fit-stay-Trim,”“sliding-Unwinding,”and“Tilting-Unwinding,”have been proposed for substrate proteolysis of amyloid precursor protein byγ-secretase based on all-atom molecular dynamics *** an incorrect registry of the Notch1 substrate was identified in the cryo-electron microscopy structure of Notch1-boundγ-secretase,molecular dynamics simulations on a resolved model of Notch1-boundγ-secretase that was reconstructed using the amyloid precursor protein-boundγ-secretase as a template successfully capturedγ-secretase activation for proper cleavages of both wildtype and mutant Notch,being consistent with biochemical experimental *** approach could be potentially applied to decipher the processing mechanisms of various substrates byγ-*** addition,controversy over the effects of familial Alzheimer’s disease mutations,particularly the issue of whether they stabilize or destabilizeγ-secretase-substrate complexes,is ***,an outlook is provided for future studies ofγ-secretase,including pathways of substrate binding and product release,effects of modulators on familial Alzheimer’s disease mutations

关键词： Alzheimer’s disease amyloid precursor protein cryo-EM structures drug design intramembrane proteolysis molecular dynamics Notch

Complementary roles of glial cells in generating region-specific neuroinflammatory responses and phagocytosis in Parkinson’s disease

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Neural Regeneration Research 2025年第10期20卷 2917-2918页

作者： Leyre Ayerra Maria s.Aymerich Universidad de Navarra Facultad de CienciasDepartamento de Bioquímica y GenéticaPamplonaSpain CIMA-Universidad de Navarra PamplonaSpain IdisNA Instituto de Investigación Sanitaria de NavarraPamplonaSpain

Neuroinflammation is associated with Parkinson’s disease:Reactive gliosis and neuroinflammation are hallmarks of Parkinson’s disease(PD),a multisystem neurodegenerative disorder characterized by a progressive loss of dopaminergic *** has long been considered a mere consequence of neuronal loss,but whether it promotes PD or is a key player in disease progression remains to be *** leukocyte antigen.

关键词： inflammation leukocyte generating