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Colloidal and rheological characterization of SWCNT in biological media

international Journal of Smart and Nano Materials 2019年第4期10卷 300-315页

作者： Arisbel Cerpa isabel Lado Oriella Quiroga Rodrigo Moreno Rosario García Sebastián Cerdán nehal i.abu-lail industrial and Aerospace Engineering Department European UniversityMadridSpain Synthesis and Colloidal Processing Group Institute of Ceramics and GlassICV-CSICMadridSpain Geology and Geochemical Department.Science Faculty Autonomous University of MadridMadridSpain Department of Endocrine and Nervous System Pathophysiology Institute of Biomedical Research“Alberto Sols”CSICMadridSpain Department of Biomedical Engineering University of Texas at San AntonioSan AntonioTXUSA

Wereport on the colloidal and rheological characterization of suspensions of commercial single-walled carbon nanotubes(SWCNT)and oxidized single walled carbon nanotubes(SWCNT-oxi24h),in water and fetal bovine serum(FBS).The effects of two surfactants,dodecyl-benzene sodium sulfonate(SBDS)and sodium dodecyl sulfate(SDS)at different concentrations(0.5-2.0%)on the zeta potential and the rheology of the suspensions is also *** suspensions were characterized by Transmission Electron Microscopy(TEM)and Atomic Force Microscopy(AFM).The colloidal stability was determined by measurements of zeta potential in the physiological pH range 6.0implemented at concentrations of 1 and 1.5 mg/ml,and temperatures of 25℃,30℃,and 37℃.The results obtained show that SWCNT suspensions in FBS,with and without addition of surfactants,depict a high tendency to aggregate with the bovine serum albumin(BSA),a processwe could further characterize using Molecular Dynamics(MD)*** suspensions in aqueous media show a negative zeta potential between−60 and−80 mV,whereas in FBS the stability is lower,with values of-20 *** observed no significant changes in the zeta potential with the different *** viscosity values obtained are smaller in water than in FBS,demonstrating the higher stability in water.

关键词： SWCNT viscosity zeta potential surfactant molecular dynamics simulation

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Clinical profile and risk factors of symptomatic and asymptomatic hypoglycemia in neonates admitted to NiCU in a tertiary care center: A cross-sectional study

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Journal of Acute Disease 2024年第1期13卷 31-35页

作者： Kiran Bhojraj Bhaisare Shivprasad Kachrulal Mundada nehal Bharat Shah Vilasrao Deshmukh Government Medical College LaturIndia

Objective:To investigate the clinical profile and risk factors of symptomatic and asymptomatic hypoglycemia in neonates admitted to a neonatal intensive care unit in a tertiary care ***:The prospective observational study was conducted in a tertiary care center in the Specialty Department of Pediatric.196 Newborn babies with blood glucose levelsined with a simple random sampling method between December 2019 and November *** and neonatal risk factors and clinical signs were recorded and compared between symptomatic and asymptomatic ***:The proportion of symptomatic hypoglycemia neonates born to gestational diabetes mellitus mothers was significantly higher(23.4%vs.8.4%)(Pional age,low birth weight,respiratory distress syndrome,hypothermia,and endocrine disorders were risk *** death rate in asymptomatic hypoglycemia neonates was significantly higher(58%vs.39%)(Pions:The study indicates that maternal gestational diabetes mellitus is associated with symptomatic hypoglycemia and asymptomatic hypoglycemia is associated with neonatal *** is important to take vigilance and timely interventions to address associated symptoms,particularly poor feeding,in the management of neonatal hypoglycemia.

关键词： Hypoglycemia Neonatal diabetes Symptomatic Asymptomatic Newborns hypoglycemia Diabetic infants Prevalence

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Effect of nutrition-related infodemics and social media on maternal experience: A nationwide survey in a low/middle income country

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World Journal of Clinical Pediatrics 2024年第1期13卷 93-106页

作者： Marwa M Zein Noha Arafa Mortada H F El-Shabrawi nehal Mohammed El-Koofy Department of Public Health and Community Medicine Cairo UniversityCairo 515211Egypt Department of Pediatric Endocrinology and Diabetes Children's HospitalKasralainy Medical SchoolCairo UniversityCairo 515211Egypt Department of Pediatrics Cairo UniversityCairo 12411Egypt Department of Pediatrics The Children's HospitalCairo UniversityCairo 12411Egypt

BACKGROUND Undernutrition is a crucial cause of morbidity and mortality among children in low-or middle-income countries(LMiCs).A better understanding of maternal general healthy nutrition knowledge,as well as misbeliefs,is highly essential,especially in such *** the current era of infodemics,it is very strenuous for mothers to select not only the right source for maternal nutrition information but the correct information as *** To assess maternal healthy nutritional knowledge and nutrition-related misbeliefs and misinformation in an LMiC,and to determine the sources of such information and their assessment *** This cross-sectional analytical observational study enrolled 5148 randomly selected Egyptian mothers who had one or more children less than 15 years *** data were collected through online questionnaire forms:One was for the general nutrition knowledge assessment,and the other was for the nutritional myth *** of information and ways of evaluating internet sources using the Currency,Relevance,Authority,Accuracy,and Purpose test were additionally *** The mean general nutrition knowledge score was 29±9,with a percent score of 70.8%±12.1%(total score:41).The median myth score was 9(interquartile range:6,12;total score:18).The primary sources of nutrition knowledge for the enrolled mothers were social media platforms(55%).Half of the mothers managed information for currency and authority,except for considering the author's contact *** than 60%regularly checked information for accuracy and *** mothers with significant nutrition knowledge checked periodically for the author's contact information(P=0.012).The nutrition myth score was significantly lower among mothers who periodically checked the evidence of the information(P=0.016).Mothers dependent on their healthcare providers as the primary source of their general nutritional knowledge were less likely to hold myths by 13%(P=0.044).However,usi

关键词： Nutrition infodemics Maternal knowledge Myth Low/middle income country

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The second brain in Parkinson’s disease: fact or fantasy?

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Neural Regeneration Research 2022年第8期17卷 1737-1738页

作者： nehal Yemula Paul Njoku Joseph Takyi James Paget University Hospital Lowestoft Road Gorleston-on-SeaGreat YarmouthUK Norfolk and Norwich University Hospital Colney LaneNorwichUK Pinderfields Hospital Aberford WayWakefieldUK

Parkinson’s disease(PD)is a movement disorder characterized by reduced dopamine levels due to degeneration of the substantia *** clinical presentation is underlined by bradykinesia,postural instability,and *** is the second most common neurodegenerative disease worldwide,with a huge monetary *** the United States alone,it is estimated that in 2017,the total economic cost was$51.9 billion,and projected to surpass$79 billion by *** research has been conducted into the pathophysiology and clinical implications of the *** neurodegenerative disorder itself,the entity involving the brain-gut axis has been a fundamental model in understanding the disease *** so than ever in PD,the association between gut health and neurological disease is gaining momentum,with the fascinating idea of influencing neurological health by treating the gut.

关键词： degeneration clinical dopamine

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Review on recent trends and prospects in π-conjugated luminescent aggregates for biomedical applications

Aggregate

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Aggregate 2022年第5期3卷 26-58页

作者： Debasish Barman Kavita Narang Retwik Parui nehal Zehra Mst Nasima Khatun Laxmi Raman Adil Parameswar Krishnan iyer Department of Chemistry School of Health Science and TechnologyCentre for NanotechnologyIndian Institute of Technology GuwahatiGuwahatiIndia

Metal-free organic molecules with structurally diverse aggregation-induced emission(AiE)behavior and new functional photophysical properties reveal unique structure-property relationships,especially bright luminescence,and have attracted extensive attention in the past few *** tremendous progress on fluorescent molecules development,the extended π-conjugated organic AiE probes with their nanorange self-assembly,coassembly,unique morphology,high biocompatibility,and light-harvesting capabilities enable them as potential candidates in numerous translational application *** particular,a few important classes of AiE light up small molecules,supramolecules,oligomers,polymers,including nanoparticles and photosensitizer molecules,with their emerging properties of thermally activated delayed fluorescence,room temperature phosphorescence,including emission switching stimuli-responsive behavior and multifunctional properties,have been boosted by the rare features of aggregation at their condensed or solid *** review highlights salient features of AiE-based emitters,encompassing molecular design strategies,stimulating photophysical properties,mechanistic aspects,and their efficacy in various electronic and biomedical applications,broadly covering properties of small molecules to oligomers,macromolecules to polymers.

关键词： aggregation-induced emission macromolecules photosensitizers polymers room temperature phosphorescence small molecules thermally activated delayed fluorescence

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A Hierarchical Trust Model for Peer-to-Peer Networks

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Computers, Materials & Continua 2019年第5期59卷 397-404页

作者： nehal Al-Otaiby Heba Kurdi Shiroq Al-Megren College of Computer and information Science King Saud UniversityRiyadh 11642Saudi Arabia

Trust has become an increasingly important issue given society’s growing reliance on electronic ***-to-peer(P2P)networks are among the main electronic transaction environments affected by trust issues due to the freedom and anonymity of peers(users)and the inherent openness of these networks.A malicious peer can easily join a P2P network and abuse its peers and resources,resulting in a large-scale failure that might shut down the entire ***,a plethora of researchers have proposed trust management systems to mitigate the impact of the ***,due to the problem’s scale and complexity,more research is *** algorithm proposed here,HierarchTrust,attempts to create a more reliable environment in which the selection of a peer provider of a file or other resource is based on several trust values represented in hierarchical *** values at the top of the hierarchical form are more trusted than those at the lower end of the ***,in HierarchTrust,is generally calculated based on the standard *** via simulation showed that HierarchTrust produced a better success rate than the well-established EigenTrust algorithm.

关键词： Peer-to-peer network trust management reputation malicious peers

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STUDY OF THE FLOWTHROUGH NON-SUBMERGED VEGETATiON

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Journal of Hydrodynamics 2005年第4期17卷 498-502页

作者： nehal Laounia YAN Zhong-min XiA Ji-hong College of Water Conservancy and Hydropower Engineering Hohai University Nanjing 210098 China

Vegetation is an important feature of many rivers. Vegetation along rivers produces high resistance to flow and, as a result, has a large impact on water levels in rivers and lakes. The effects of instream-unsubmerged vegetation （such as the reed-similar Kalmus） on flow resistance and velocity distributions is studied in the paper. Artificial vegetation is used in the experimental study to simulate the Acorus Calmus L. As shown in experimental tests the resistance depends strongly on vegetation density and the Manning resistance coefficient varies with the depth of flow. A simplified model based on concepts of drag is developed to evaluate the roughness coefficient （Manning＇s n） for non submerged vegetation. in vegetated channels the overall flow resistance is influenced significantly by the distribution pattern of the vegetated beds. Within vegetation, vertical variation in velocity is different from that in the non vegetated bed, which reflects the variation in vegetation density. Vertical turbulent transport of momentum is negligible as demonstrated by experiments.

关键词： open channel flow non-submerged vegeta-tion vegetation density flow resistance velocity distribution

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Design and implementation of an English Spell and Grammar Checking System

Design and Implementation of an English Spell and Grammar Ch...

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作者： nehal Tarek Hassan Morsy 哈尔滨工业大学

学位级别：硕士

电脑的使用在人们的生活中越来越普及，在人们输入文字的过程中，难免会出现语法错误的情况，自动纠正语法错误非常重要。因此，我们需要拼写和语法检查工具来辅助输入。现在的语法检查模型大部分是基于规则，其检查效果不能满足人们的... 详细信息

电脑的使用在人们的生活中越来越普及，在人们输入文字的过程中，难免会出现语法错误的情况，自动纠正语法错误非常重要。因此，我们需要拼写和语法检查工具来辅助输入。现在的语法检查模型大部分是基于规则，其检查效果不能满足人们的需要。本文的工作主要实现一种新的基于规则的拼写和语法检查工具。随着计算机的存储能力和计算速度的发展，拼写和语法检查的研究有了新的发展趋势。大量的统计数据可以从互联网获取到，包括搜索引擎的搜索结果、在线新闻、数字化的文本和学术文献，网络大数据催生了拼写和语法检查研究的新思路。本论文的主要目的是设计和实现一个面向英文的拼写和语法检查系统。尽管已经有很多开源的字处理软件能够提供拼写和语法检查，只有少数工具能提供完全的解决方案。本论文所描述的拼写和语法检查系统以用户输入的语句为输入，并为每个检测到的错误生成一个可能的建议清单。为了检测错误，系统为文本的每个词分配词性标签，然后将文本与检查系统预定义的错误的规则进行匹配。如果规则匹配，则认为文本在匹配的位置包含一个拼写错误。拼写和检查系统用C语言实现，并采用精确度和召回率评价。另外，系统的检查结果和其他商业工具，比如Microsoft Word，进行了比较。此外，除了使用基于规则的方法，本文设计了一个新的基于统计的方法用于进一步检查并纠正拼写和语法错误。该方法把用户的输入语句和存储的大规模文本进行匹配，选择匹配度最佳的语句用于纠正拼写和语法错误。

关键词：自然语言处理拼写检查词性标注语法检查基于规则语法检查基于统计语法检查

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Cardiac stem cells: Current knowledge and future prospects

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World Journal of Stem Cells 2022年第1期14卷 1-40页

作者： Radwa A Mehanna Marwa M Essawy Mona A Barkat Ashraf K Awaad Eman H Thabet Heba A Hamed Hagar Elkafrawy nehal A Khalil Abeer Sallam Marwa A Kholief Samar S ibrahim Ghada M Mourad Medical Physiology Department/Center of Excellence for Research in Regenerative Medicine and Applications Faculty of MedicineAlexandria UniversityAlexandria 21500Egypt Oral Pathology Department Faculty of Dentistry/Center of Excellence for Research in Regenerative Medicine and ApplicationsFaculty of MedicineAlexandria UniversityAlexandria 21500Egypt Human Anatomy and Embryology Department/Center of Excellence for Research in Regenerative Medicine and Applications Faculty of MedicineAlexandria UniversityAlexandria 21500Egypt Center of Excellence for Research in Regenerative Medicine and Applications Faculty of MedicineAlexandria UniversityAlexandria 21500Egypt Histology and Cell Biology Department/Center of Excellence for Research in Regenerative Medicine and Applications Faculty of MedicineAlexandria UniversityAlexandria 21500Egypt Medical Biochemistry Department/Center of Excellence for Research in Regenerative Medicine and Applications Faculty of MedicineAlexandria UniversityAlexandria 21500Egypt Forensic Medicine and Clinical toxicology Department/Center of Excellence for Research in Regenerative Medicine and Applications Faculty of MedicineAlexandria UniversityAlexandria 21500Egypt

Regenerative medicine is the field concerned with the repair and restoration of the integrity of damaged human tissues as well as whole *** the inception of the field several decades ago,regenerative medicine therapies,namely stem cells,have received significant attention in preclinical studies and clinical *** from their known potential for differentiation into the various body cells,stem cells enhance the organ's intrinsic regenerative capacity by altering its environment,whether by exogenous injection or introducing their products that modulate endogenous stem cell function and fate for the sake of ***,research in cardiology has highlighted the evidence for the existence of cardiac stem and progenitor cells(CSCs/CPCs).The global burden of cardiovascular diseases’morbidity and mortality has demanded an in-depth understanding of the biology of CSCs/CPCs aiming at improving the outcome for an innovative therapeutic *** review will discuss the nature of each of the CSCs/CPCs,their environment,their interplay with other cells,and their *** addition,important issues are tackled concerning the potency of CSCs/CPCs in relation to their secretome for mediating the ability to influence other ***,the review will throw the light on the clinical trials and the preclinical studies using CSCs/CPCs and combined therapy for cardiac ***,the novel role of nanotechnology in cardiac regeneration will be explored.

关键词： Cardiac stem and progenitor cells Cardiac stem cells’secretome Cardiac stem cells’niche and metabolism Nanotechnology Clinical trials Combined therapy

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Quality of life assessment in patients with chronic pancreatitis receiving antioxidant therapy

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World Journal of Gastroenterology 2010年第32期16卷 4066-4071页

作者： nehal S Shah Alistair J Makin Aali J Sheen Ajith K Siriwardena Hepatobiliary Surgery Unit Manchester Royal InfirmaryManchester M13 9WLUnited Kingdom Department of Gastroenterology Manchester Royal InfirmaryManchester M13 9WLUnited Kingdom

AiM:To undertake a baseline study comparing quality of life(QoL) in patients with chronic pancreatitis(CP) on Antox to those with CP,matched for disease duration,who were not on this ***:CP was defined according to the Zurich *** eight consecutive patients with CP who were taking Antox(antioxidants) were compared with 69 consecutive control CP patients not on *** Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core questions 30 and Pancreatic Modification(28 questions) were used to assess *** of a total of 137 patients 28 in each group were matched for disease duration(within 12 mo).Median disease duration was 8(1-22) years in the Antox group and 7(1-23) years in the Non-Antox cohort(P = NS,Mann-Whitney U-test).Other parameters(age,gender,etiology,endocrine and exocrine insufficiency) were similar between ***:Median visual analogue pain score in the Antox group was 3(0-8) compared with 6(0-8) in the Non-Antox group(P ions of cognitive,emotional,social,physical and role function were impaired in the Non-Antox group compared to Antox patients(P ively).Analgesics and opiate usage was significantly lower in the Antox group(P ical health and global QoL was better in the Antox group(P i:1.5-3).CONCLUSiON:Contemporary quality of life assessments show that after correction for disease duration and cigarette smoking,patients with CP taking antox had better scores than non-antox controls.

关键词： Chronic pancreatitis Antioxidants Quality of life Assessment Management

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