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Coat-and-print patterning of silver nanowires for flexible and transparent electronics

npj Flexible Electronics 2019年第1期3卷 149-155页

作者： Weiwei Li Azat Meredov atif Shamim IMPACT Lab ComputerElectrical and Mathematical Sciences and Engineering(CEMSE)DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia.

Silver nanowires(Ag NWs)possess excellent optoelectronic properties,which have led to many technology-focused applications of transparent and flexible *** of these applications require patterning of Ag NWs into desired shapes,for which maskbased and printing-based techniques have been developed and widely ***,there are still several limitations associated to these *** limitations,such as complicated patterning procedures,limited patterning area,and compromised optical transparency,hamper the efficient fabrication of high-performance Ag NW ***,we propose a coat-and-print approach for effectively patterning Ag *** printed a polymer-based ink on the spin-coated Ag NW *** ink acts as a protective layer to help remove excess Ag NWs from the substrate and then dissolves itself into an organic *** this way,we can take advantage of both coating-based techniques(lead to Ag NWs with high transparency)and printing-based techniques(efficiently pattern diverse shapes).The resultant Ag NW patterns exhibit comparable conductivity(sheet resistance:7.1 to 30 Ohm/sq)and transparency(transmittance:84 to 95%atλ=550 nm)to those made by conventional coating *** addition,the patterned Ag NWs exhibit robust mechanical stability and reliability,surviving extensive bending and peeling *** to higher conductivity,efficient patterning ability and inherent transparency,this material system and application method is highly suitable for transparent and flexible *** a proof of concept,this research demonstrates a wide-band antenna,operating in the mm-wave range that includes the 5G communication *** proposed antenna exhibits a wide bandwidth of 26 GHz(from 17.9 GHz to 44 GHz),robust return loss under 1000 cyclic bending(bending radius of 3.5 mm),and decent transparency over the entire visible wavelength(86.8%transmittance atλ=550 nm).This work’s promising results indicate that this method can be adapted for r

关键词： nanowires transparent transparency

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Terlipressin and hepatorenal syndrome: What is important for nephrologists and hepatologists

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World Journal of Gastroenterology 2010年第41期16卷 5139-5147页

作者： Ahmed A Magan atif A Khalil Mohamed H Ahmed Department of Surgery Cambridge Uni-versity Hospital NHS foundation Trust Hills Road Cambridge CB2 0QQ United Kingdom Department of Nephrology Royal Liverpool and Broadgreen University Hospitals Liverpool L7 8XP United Kingdom Division of Acute Medicine James Cook University Hospital Marton Road Middlesbrough TS4 3BW United Kingdom

Hepatorenal syndrome (HRS) is a reversible form of functional renal failure that occurs with advanced hepatic cirrhosis and liver failure. Despite mounting research in HRS, its etiology and medical therapy has not been resolved. HRS encompasses 2 distinct types. Type 1 is characterized by the rapid development of renal failure that occurs within 2 wk and involves a doubling of initial serum creatinine. Type 2 has a more insidious onset and is often associated with ascites. Animal studies have shown that both forms, in particular type 1 HRS, are often precipitated by bacterial infections and cir-culatory changes. The prognosis for HRS remains very poor. Type 1 and 2 both have an expected survival time of 2 wk and 6 mo, respectively. Progression of liver cir-rhosis and the resultant portal hypertension leads to the pooling of blood in the splanchnic vascular bed. The ensuing hyperdynamic circulation causes an ineffective circulatory volume which subsequently activates neuro-hormonal systems. Primarily the sympathetic nervoussystem and the renin angiotensin system are activated, which, in the early stages of HRS, maintain adequate circulation. Both advanced cirrhosis and prolonged ac-tivation of neurohormonal mechanisms result in fatal complications. Locally produced nitric oxide may have the potential to induce a deleterious vasodilatory effect on the splanchnic circulation. Currently medical therapy is aimed at reducing splanchnic vasodilation to resolve the ineffective circulation and maintain good renal per-fusion pressure. Terlipressin, a vasopressin analogue, has shown potential benefit in the treatment of HRS. It prolongs both survival time and has the ability to re-verse HRS in the majority of patients. In this review we aim to focus on the pathogenesis of HRS and its treatment with terlipressin vs other drugs.

关键词： Heptorenal syndrome Terlipressin Kidney Liver

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Role of routine lymph node dissection alongside resection ofintrahepatic cholangiocarcinoma: Systematic review and metaanalysis

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World Journal of Gastrointestinal Oncology 2023年第11期15卷 2017-2032页

作者： Mo atif Aditya Borakati Vasileios K Mavroeidis Department of Colorectal Surgery University Hospitals Birmingham NHS Foundation TrustBirmingham B152GWUnited Kingdom Department of HPB and Liver Transplantation Surgery Royal Free Hospital NHS Foundation TrustLondon NW32QGUnited Kingdom Department of HPB Surgery University Hospitals Bristol and Weston NHS Foundation TrustBristol Royal InfirmaryBristol BS28HWUnited Kingdom Department of Academic Surgery Royal Marsden NHS Foundation TrustLondon SW36JJUnited Kingdom

BACKGROUND The global incidence of intrahepatic cholangiocarcinoma(ICCA)is *** to often delayed presentation,only a narrow spectrum of the disease is usually surgically *** more accurately stage the disease,reduce recurrence,and improve overall survival,surgical teams are increasingly performing intraoperative lymph node dissection(LND)as *** procedure has its associated morbidity,while there is no consensus or formal guidelines on its role in this ***,there is a need to better delineate the evidence for performing LND alongside surgical resection of the *** To perform a systematic review and meta-analysis on the role of LND in improving prognostication and survival post-resection of *** We performed a systematic literature search using Pubmed,Medline,Embase,and the Cochrane Library,for all studies involving LND,ICCA,and surgical resection using several keywords,Medical Subject Headings(MeSH)tags,and appropriate *** clinical studies comparing curative intent resection of ICCA with LND vs resection without LND were included,while single-arm case series,studies with insufficient data,and duplicates were *** included all English-language studies from the different academic databases up till early December *** primary outcome measures were set for overall survival(OS)and disease-free survival(DFS).RESULTS This systematic review and meta-analysis included 15 studies that fulfilled the selection criteria comprising 11413 patients with surgically-resectable ICCA,of whom 6424(56.3%)underwent hepatectomy with LND while the remainder underwent hepatectomy *** patients who underwent LND,on average,27.7%of the resected lymph nodes were positive for metastatic ***,the results showed that performing LND did not significantly improve OS or ***,the effect of LND on OS showed a degree of variability by geographical region,in Eastern and Western *** LND is increasingly being perform

关键词： Cholangiocarcinoma Periductal-infiltrating Mass-forming Lymphadenectomy Lymph node metastasis Hepatectomy

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Formal Modeling of Self-Adaptive Resource Scheduling in Cloud

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Computers, Materials & Continua 2023年第1期74卷 1183-1197页

作者： atif Ishaq Khan Syed Asad Raza Kazmi Awais Qasim Department of Computer Science Government College UniversityLahore54000Pakistan

A self-adaptive resource provisioning on demand is a critical factor in cloud *** selection of accurate amount of resources at run time is not easy due to dynamic nature of ***,a self-adaptive strategy of resources is required to deal with dynamic nature of requests based on run time change in *** this paper we proposed a Cloud-based Adaptive Resource Scheduling Strategy(CARSS)Framework that formally addresses these issues and is more expressive than traditional *** decision making in CARSS is based on more than one ***-K based framework determines the state of the resources based on their current ***-Arc Petri Net(TAPN)is used to model system formally and behaviour is expressed in TCTL,while TAPAAL model checker verifies the underline properties of the system.

关键词： Formal modeling multi-agent self-adaptive cloud computing

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Endoscopic therapies of gastroesophageal reflux disease

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World Journal of Gastroenterology 2006年第17期12卷 2641-2655页

作者： atif Iqbal Vanessa Salinas Charles J Filipi Department of Surgery University of Missouri Columbia One Hospital DriveColumbiaMO 65211United States Department of Surgery Creighton University 601 N 30th StreetOmaha NE 68131United States

The high prevalence of gastroesophageal reflux disease （GERD） in Western societies has accelerated the need for new modalities of treatment. Currently, medical and surgical therapies are widely accepted among patients and physicians. New potent antisecretory drugs and the development of minimally invasive surgery for the management of GERD are at present the pivotal and largely accepted approaches to treatment. The minimally invasive treatment revolution, however, has stimulated several new endoscopic techniques for GERD. Up to now, the data is limited and further studies are necessary to compare the advantages and disadvantages of the various endoscopic techniques to medical and laparoscopic management of GERD. New journal articles and abstracts are continuously being published. The Food and Drug Administration has approved 3 modalities, thus gastroenterologists and surgeons are beginning to apply these techniques. Further trials and device refinements will assist clinicians. This article will present an overview of the various techniques that are currently on study. This review will report the efficacy and durability of various endoscopic therapies for gastroesophageal reflux disease （GERD）. The potential for widespread use of these techniques will also be discussed. Articles and abstracts published in English on this topic were retrieved from Pubmed. Due to limited number of studies and remarkable differences between various trials, strict criteria were not used for the pooled data presented, however, an effort was made to avoid bias by including only studies that used off-PPI scoring as baseline and intent to treat.

关键词： Endoscopic Treatment Gastroesophageal reflux disease

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Early Diagnosis of Alzheimer’s Disease Based on Convolutional Neural Networks

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Computer Systems Science & Engineering 2022年第10期43卷 305-315页

作者： atif Mehmood Ahed Abugabah Ahmed Ali AlZubi Louis Sanzogni College of Technological Innovation Zayed UniversityAbu Dhabi CampusFF2-0-056UAE Computer Science Department Community CollegeKing Saud UniversityRiyadh11437Saudi Arabia Nathan Campus Griffith UniversityBrisbaneAustralia

Alzheimer’s disease(AD)is a neurodegenerative disorder,causing the most common dementia in the elderly *** AD patients are rapidly increasing in each year and AD is sixth leading cause of death in *** resonance imaging(MRI)is the leading modality used for the diagnosis of *** learning based approaches have produced impressive results in this *** early diagnosis of AD depends on the efficient use of classification *** address this issue,this study proposes a system using two convolutional neural networks(CNN)based approaches for an early diagnosis of AD *** the proposed system,we use segmented MRI *** data samples of three classes include 110 normal control(NC),110 mild cognitive impairment(MCI)and 105 AD subjects are used in this *** data is acquired from the ADNI database and gray matter(GM)images are obtained after the segmentation of MRI subjects which are used for the classification in the proposed *** proposed approaches segregate among NC,MCI,and *** testing both methods applied on the segmented data samples,the highest performance results of the classification in terms of accuracy on NC *** are 95.33%and 89.87%,*** proposed methods distinguish between NC *** and MCI *** patients with a classification accuracy of 90.74%and 86.69%.The experimental outcomes prove that both CNN-based frameworks produced state-of-the-art accurate results for testing.

关键词： Alzheimer’s disease neural networks intelligent systems gray matter

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Effect of Cu/Zn Substitution in MgO Nanostructures for Tuning the Optical Bandgap and Structural Properties

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Journal of Wuhan University of Technology(Materials Science) 2022年第6期37卷 1035-1040页

作者： atif Dawar S NASEEM Shah M ASIF Siddiqui YASMEEN Bibi Department of Physics Federal Urdu University of ArtsScience and TechnologyKarachiPakistan Department of Chemistry Federal Urdu University of ArtsScience and TechnologyKarachiPakistan

Low cost co-precipitation method was used to synthesize Cu(0-0.05)doped MgO samples with fixed concertation of Zn=0.01.X-ray diffraction(XRD)spectra confirmed the phase purity of the samples for 0≤Cu≤0.03 doping *** secondary phase for 0.04≤Cu≤0.05 exhibited the formation of mixed metal *** crystallite size was found to increase from 17.5 to 23.5 nm for 0≤Cu≤0.03 and then decreased from 22 to 18.5 nm for 0.04≤Cu≤*** estimated bandgap first reduced from 5.48 to 4.88 eV and then increased from 5.21 to 5.36 *** morphology of the samples transformed from spheroidal shape to star-like *** obtained results reveal that the structural and optical property are in good agreement with the morphological *** peak shifting towards the lower values of vibrational frequency from 694 to 579 cm^(-1) confirms the incorporation of Cu/Zn in Mg-O *** tuning of optical bandgap and structural properties with varying dopant concentration in MgO nanomaterials can be used for multifunctional modern energy storage and optoelectronic devices.

关键词： Cu/Zn doping MgO optical bandgap morphology vibrational modes

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Ischemic stroke due to carbon monoxide intoxication: Two case reports

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World Journal of Emergency Medicine 2018年第1期9卷 73-75页

作者： atif Bayramoglu Abdullah Osman Kocak Esra Kadioglu Department of Emergency Medicine Faculty of Medicine University of Ataturk

Dear editor, Following its entrance into the human body through inhalation, carbon monoxide （CO） forms carboxyhemoglobin （COHb） by binding to hemoglobin （Hb） within the blood. Massive ischemic tissue necrosis occurs in 0.5%-1% of cases with CO poisoning. The affinity of CO to Hb is 200-250 times more when compared to the affinity of oxygen. As a result of CO binding to Hb, oxygen delivery to the tissues is reduced, and tissue hypoxia develops. This affects mostly the brain and heart, which are the organs with the highest demand for oxygen.

关键词： Ischemic stroke due to carbon monoxide intoxication Two case reports

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Adaptive Event-Triggered Filter Design for Cyber Physical Systems Under Non-Periodic Denial-of-Service Attacks

Adaptive Event-Triggered Filter Design for Cyber Physical S...

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作者： Muhammad atif 华南理工大学

学位级别：硕士

In the last few decades,cyber-physical systems（CPSs）have become new-generation engineering systems formed by the networks *** to the involvement of networks,security against cyber-attacks and resource optimization are the primary performance indicator of CPSs,which have excellent research *** this paper,we study the adaptive event triggering scheme（AETS）based H

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The Effect of an External Magnetic Field on the Plume Expansion Dynamics of Laser-Induced Aluminum Plasma

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Plasma Science and Technology 2015年第8期17卷 693-698页

作者： atif HUSSAIN 李奇郝作强高勋林景全 School of Science Changchun University of Science and Technology

In this work, we investigated the plasma morphology induced by a Nd：YAG laser with the aim of improving the understanding of the formation and dynamics of the plasma in two cases, with and without a magnetic field. Single laser pulse production of a plasma in the absence and presence of a magnetic field was performed with an aluminum target in air. A fast photography technique was employed to obtain information about the expansion dynamics and confinement of the aluminum plasma in each case. The generation of the laser plasma was allowed to expand at two locations with different magnetic field strengths, which correspond to the strength 0.58 T in the center of two magnetic poles and 0.83 T at a distance of 4 mm from the upper pole （N）. The plume showed lateral confinement at longer delays when the target was placed at the center of the two poles. When the target was placed at a distance of 4 mm from the upper pole it was observed that the plume was divided into two lobes at the initial stage and traveled towards the center of the magnetic field with further elapse of time.

关键词： plasma plume fast imaging magnetic confinement

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