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Prevalence of plasmid mediated bla_(TEM-1) and bla_(CTX-M-15) type extended spectrum beta-lactamases in patients with sepsis

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Asian Pacific Journal of Tropical Medicine 2012年第2期5卷 98-102页

作者： Shahzad F Haque saeedut-z ali Mohammed TP Asad U Khan Department of Medicine J.N.Medical CollegeAligarhIndia Interdisciplinary Biotechnology Unit AMUAligarh Muslim UniversityAligarhIndia Department of Medicine J.N.Medical College.AligarhIndia

Objective:To characterize the bacterial pathogens in patients having gram negative septicaemia. Further,to evaluate the antimicrobial resistance and underlying molecular mechanisms in these ***:A total number of 70 cases of gram negative sepsis were included in this prospective,open labeled,observational *** methods for isolation and identification of bacteria were *** susceptibility and ESBL testing was performed by the standard disc diffusion *** amplification was performed to identify blaCTX-M,blaSHVand blaTEM type *** experiments were performed to show resistant marker transfer. Results:The most prevalent isolates Escherichia coli（***） 58.6%,Klebsiella Spp.32.9%and Pseudomonas 8.6%,were resistant to most of the antimicrobials including cefazolin,ceftriaxone, cefuroxime,ampicillin and co-trimoxazole but sensitive to imipenem and *** and MBL production was seen 7.3%and 12.2%of *** isolates *** isoaltes were found to have blaCTX-M-15 and two of them also showed blaTEM-1 type ***, none of them showed blaSHV.Conjugation experiments using J-53 cells confirmed these resistant markers as plasmid ***:This work highlights the molecular epidemiology of escalating antimicrobial resistance and likely switch over of blaCTX-M-15 type extended spectrum beta-lactamases by blaTEM type ESBLs in ***,the antimicrobial resistance by horizontal gene transfer was predominant among Enterobacteraceae in the community setting.

关键词： Gram negative sepsis ESBL Antimicrobial resistance

Physical and Kinematical Characteristics of Wolf–Rayet Central Stars and their Host Planetary Nebulae

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Research in Astronomy and Astrophysics 2023年第9期23卷 219-240页

作者： z.Awad A.ali Department of Astronomy Space Science and MeteorologyFaculty of ScienceCairo University12613 Giza

We address the physical and kinematical properties of Wolf–Rayet[WR]central stars(CSs)and their host planetary nebulae(PNe).The studied sample comprises all[WR]CSs that are currently *** analysis is based on recent observations of the parallax,proper motion,and color index of[WR]CSs from the Gaia space mission’s early third release(eDR3)catalog,as well as common nebular *** results revealed an evolutionary sequence,in terms of decreasing Teff,from the early hot[WO 1]to the late cold[WC 12]*** evolutionary sequence extends beyond[WR]CS temperature and luminosity to additional CS and nebular *** statistical analysis shows that the mean final stellar mass and evolutionary age of the[WR]CS sample are 0.595±0.13M⊙and 9449±2437 yr,respectively,with a mean nebular dynamical age of 7270±1380 *** addition,we recognize that the color of the majority(∼85%)of[WR]CSs tends to be red rather than their genuine blue *** analysis indicates that two-thirds of the apparent red color of most[WR]s is attributed to the interstellar extinction whereas the other one-third is due to the PN self-extinction effect.

关键词： Wolf-Rayet-(ISM )planetary nebulae general-ISM kinematics and dynamics

Slip effects on streamline topologies and their bifurcations for peristaltic flows of a viscous fluid

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Chinese Physics B 2014年第6期23卷 341-352页

作者： z.Asghar N.ali Department of Mathematics and Statistics International Islamic University

We discuss the effects of the surface slip on streamline patterns and their bifurcations for the peristaltic transport of a Newtonian fluid. The flow is in a two-dimensional symmetric channel or an axisymmetric tube. An exact expression for the stream function is obtained in the wave frame under the assumptions of long wavelength and low Reynolds number for both cases. For the discussion of the particle path in the wave frame, a system of nonlinear autonomous differential equations is established and the methods of dynamical systems are used to discuss the local bifurcations and their topological changes. Moreover, all types of bifurcations and their topological changes are discussed graphically. Finally, the global bifurcation diagram is used to summarize the bifurcations.

关键词： viscous fluid slip condition streamline topologies bifurcation

Notes on Curves at a Constant Distance from the Edge of Regression on a Curve in Galilean 3-Space G_(3)

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Computer Modeling in Engineering & Sciences 2023年第6期135卷 2731-2742页

作者： ali Cakmak Sezai Kızıltug Gokhan Mumcu Department of Mathematics Faculty of Arts and SciencesBitlis Eren UniversityBitlis13000Turkey Graduate School of Natural and Applied Sciences Erzincan Binali Yıldırım UniversityErzincan24002Turkey Department of Mathematics Faculty of Arts and ScienceErzincan Binali Yıldırım UniversityErzincan24002Turkey

In this paper,we define the curve rλ=r+λd at a constant distance from the edge of regression on a curve r(s)with arc length parameter s in Galilean ***,d is a non-isotropic or isotropic vector defined as a vector tightly fastened to Frenet trihedron of the curve r(s)in 3-dimensional Galilean *** build the Frenet frame{Tλ,Nλ,Bλ}of the constructed curve rλwith respect to two types of the vector d and we indicate the properties related to the curvatures of the curve rλ.Also,for the curve rλ,we give the conditions to be a circular ***,we discuss ruled surfaces of type A generated via the curve rλand the vector D which is defined as tangent of the curve rλin 3-dimensional Galilean *** constructed ruled surfaces also appear in two *** first is constructed with the curve rλ(s)=r(s)+λT(s)and the non-isotropic vector *** second is formed by the curve rλ=r(s)+λ2N+λ3B and the non-isotropic vector *** calculate the distribution parameters of the constructed ruled surfaces and we show that the ruled surfaces are ***,we provide examples and visuals to back up our research.

关键词： Edge of regression Galilean space curvature helix ruled surface

A Secure Communication Protocol for Unmanned Aerial Vehicles

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Computers, Materials & Continua 2022年第1期70卷 601-618页

作者： Navid ali Khan N.z.Jhanjhi Sarfraz Nawaz Brohi Abdulwahab ali Almazroi Abdulaleem ali Almazroi School of Computer Science and Engineering(SCE) Taylor’s University Lake-side CampusSubang Jaya47500Malaysia School of Information and Technology Monash UniversityMalaysia University of Jeddah College of Computing and Information Technology at KhulaisDepartment of Information TechnologyJeddahSaudi Arabia Department of Computer Science Rafha Community CollegeNorthern Border UniversityArar91431Saudi Arabia

Mavlink is a lightweight and most widely used open-source communication protocol used for Unmanned Aerial *** UAVs and autopilot systems support it,and it provides bi-directional communication between the UAV and Ground Control *** communications contain critical information about the UAV status and basic control commands sent from GCS to UAV and UAV to *** order to increase the transfer speed and efficiency,the Mavlink does not encrypt the *** a result,the protocol is vulnerable to various security attacks such as Eavesdropping,GPS Spoofing,and *** this study,we tackle the problem and secure the Mavlink communication *** leveraging the Mavlink packet’s vulnerabilities,this research work introduces an experiment in which,first,the Mavlink packets are compromised in terms of security requirements based on our threat *** results show that the protocol is insecure and the attacks carried out are *** overcomeMavlink security,an additional security layer is added to encrypt and secure the *** encryption technique is proposed that makes the communication between the UAV and GCS *** results show that the Mavlink packets are encrypted using our technique without affecting the performance and *** results are validated in terms of transfer speed,performance,and efficiency compared to the literature solutions such as MAVSec and benchmarked with the original Mavlink *** achieved results have significant improvement over the literature and Mavlink in terms of security.

关键词： Unmanned aerial vehicles mavlink protocol drones security UAVs communication

Pressure and Discharge-Voltage Dependence of Self-Sustaining Pulses in Air-Glow Discharge

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Chinese Physics Letters 2012年第5期29卷 181-184页

作者： A.A.Azooz Y.A.Al-Jawaady z.T.ali Department of Physics College of ScienceMosul UniversityMosulIraq

The details of formation of micro discharges in air-glow discharge plasma are experimentally *** number of micro discharges formed per second is strongly related to both pressure and discharge *** number tends to show reflections of the Patchen curve as far as its pressure dependence is *** dischargevoltage dependence indicates that the transition from normal to abnormal glow discharge is not a sudden one,but has its roots during the normal glow stage and is initiated by the micro discharges which can be regarded as the early stage of abnormal glow.

关键词： details initiated roots

Topology-Optimized 4D Printing of a Soft Actuator

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Acta Mechanica Solida Sinica 2020年第3期33卷 418-430页

作者： ali zolfagharian Martin Denk Mahdi Bodaghi Abbas z.Kouzani Akif Kaynak School of Engineering Deakin UniversityGeelong 3216Australia Munich University of Applied Sciences 80335 MunichGermany Department of Engineering School of Science and TechnologyNottingham Trent UniversityNottingham NG 118NSUK

Soft robots and actuators are emerging devices providing more capabilities in the field of *** flexibility and compliance attributing to soft functional materials used in the fabrication of these devices make them ideal for delivering delicate tasks in fragile environments,such as food and biomedical ***,the intuitive nonlinearity of soft functional materials and their anisotropic actuation in compliant mechanisms constitute an existent challenge in improving their *** optimization(TO)along with four-dimensional(4D)printing is a powerful digital tool that can be used to obtain optimal internal architectures for the efficient performance of porous soft *** paper employs TO analysis for achieving high bending deflection of a 3D printed polyelectrolyte actuator,which shows bending deformations in response to electrical stimuli in an electrolyte *** performance of the actuator is studied in terms of maximum bending and actuation rate compared with a solid,uniformly 3D printed and topology-optimized *** experimental results proved the effectiveness of TO on achieving higher bending deformation and actuation rate against a uniformly 3D printed actuator.

关键词： Topology optimization 4D printing 3D printing Soft actuator

4D printing of soft orthoses for tremor suppression

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Bio-Design and Manufacturing 2022年第4期5卷 786-807页

作者： Moslem Mohammadi ali zolfagharian Mahdi Bodaghi Yong Xiang Abbas z.Kouzani School of Engineering Deakin UniversityGeelongVIC 3216Australia Department of Engineering School of Science and TechnologyNottingham Trent UniversityNottingham NG118NSUK School of Information Technology Deakin UniversityGeelongVIC 3216Australia

Tremor is an involuntary and oscillatory movement disorder that makes daily activities difficult for affected patients. Hand tremor-suppression orthoses are noninvasive, wearable devices designed to mitigate tremors. Various studies have shown that these devices are effective, economical, and safe;however, they have drawbacks such as large weight, awkward shape, and rigid parts. This study investigates different types of tremor-suppression orthoses and discusses their efficiency, mechanism,benefits, and disadvantages. First, various orthoses(with passive, semi-active, and active mechanisms) are described in ***, we look at how additive manufacturing(AM) has progressed recently in making sensors and actuators for application in tremor orthoses. Then, the materials used in AM are further analyzed. It is found that traditional manufacturing problems can be solved with the help of AM techniques, like making orthoses that are affordable, lighter, and more customizable. Another concept being discussed is using smart materials and AM methods, such as four-dimensional(4D) printing, to make orthoses that are more comfortable and efficient.

关键词： Tremor suppression Parkinson’s disease Essential tremor Additive manufacturing 4D printing

Mucosal mast cells are pivotal elements in inflammatory bowel disease that connect the dots:Stress,intestinal hyperpermeability and inflammation

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World Journal of Gastroenterology 2007年第22期13卷 3027-3030页

作者： Ashkan Farhadi Jeremy z Fields ali Keshavarzian Division of Digestive disease and Nutrition Rush University Medical Center Chicago IL United States

Mast cells (MC) are pivotal elements in several physiological and immunological functions of the gastro- intestinal (GI) tract. MC translate the stress signals that has been transmitted through brain gut axis into release of proinflammatory mediators that can cause stimulation of nerve endings that could affect afferent nerve terminals and change their perception, affect intestinal motility, increase intestinal hyperpermeability and, in susceptible individuals, modulate the inflammation. Thus, it is not surprising that MC are an important element in the pathogenesis of inflammatory bowel disease and non inflammatory GI disorders such as IBS and mast cell enterocolitis.

关键词： Mast cells Intestinal permeability Stress,Inflammatory bowel disease Irritable bowel syndrome Intestinal barrier