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Driving pressure in mechanical ventilation:A review

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World Journal of Critical Care Medicine 2024年第1期13卷 15-27页

作者： Syeda Farheen Zaidi Asim Shaikh Daniyal aziz khan Salim Surani Iqbal Ratnani Department of Medicine Queen Mary UniversityLondon E14NSUnited Kingdom Department of Medicine Aga Khan UniversitySindhKarachi 74500Pakistan Department of Medicine Jinnah Postgraduate Medical CenterSindhKarachi 75510Pakistan Department of Medicine and Pharmacology Texas A and M UniversityCollege StationTX 77843United States Department of Anesthesiology and Critical Care Houston Methodist HospitalHoustonTX 77030United States

Driving pressure(ΔP)is a core therapeutic component of mechanical ventilation(MV).Varying levels ofΔP have been employed during MV depending on the type of underlying pathology and severity of ***,ΔP levels have also been shown to closely impact hard endpoints such as *** this,conducting an in-depth review ofΔP as a unique,outcome-impacting therapeutic modality is extremely *** is a need to understand the subtleties involved in making sureΔP levels are optimized to enhance outcomes and minimize *** performed this narrative review to further explore the various uses ofΔP,the different parameters that can affect its use,and how outcomes vary in different patient populations at different pressure *** better utilizeΔP in MV-requiring patients,additional large-scale clinical studies are needed.

关键词： Driving pressure Acute respiratory distress syndrome Mortality Positive end-expiratory pressure Ventilator induced lung injury Mechanical ventilation

Quasi Controlled K-Metric Spaces over C^(*)-Algebras with an Application to Stochastic Integral Equations

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Computer Modeling in Engineering & Sciences 2023年第6期135卷 2649-2663页

作者： Ouafaa Bouftouh Samir Kabbaj Thabet Abdeljawad aziz khan Department of Mathematics Laboratory of Partial Differential EquationsAlgebra and Spectral GeometryFaculty of SciencesIbn Tofail UniversityKenitraBP 133Morocco Department of Mathematics and Sciences Prince Sultan UniversityP.O.Box 66833Riyadh11586Saudi Arabia Department of Medical Research China Medical UniversityTaichung40402Taiwan

Generally,the field of fixed point theory has attracted the attention of researchers in different fields of science and engineering due to its use in proving the existence and uniqueness of solutions of real-world dynamic models.C^(∗)-algebra is being continually used to explain a physical system in quantum field theory and statistical mechanics and has subsequently become an important area of *** concept of a C^(∗)-algebra-valued metric space was introduced in 2014 to generalize the concept of metric *** fact,It is a generalization by replacing the set of real numbers with a C^(∗)-*** that,this line of research continued,where several fixed point results have been obtained in the framework of C^(∗)-algebra valued metric,aswell as(more general)C^(∗)-algebra-valued b-metric spaces andC^(∗)-algebra-valued extended b-metric *** recently,based on the concept and properties of C^(∗)-algebras,we have studied the quasi-case of such spaces to give a more general notion of relaxing the triangular inequality in the asymmetric *** this paper,we first introduce the concept of C^(∗)-algebra-valued quasi-controlledK-metric spaces and prove some fixed point theorems that remain valid in this *** support our main results,we also furnish some exampleswhichdemonstrate theutility of ***,as an application,we useour results to prove the existence and uniqueness of the solution to a nonlinear stochastic integral equation.

关键词： C^(*)-algebra-valued quasi controlled K-metric spaces left convergence right convergence fixed point contraction

Numerical Solutions of Fractional Variable Order Differential Equations via Using Shifted Legendre Polynomials

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Computer Modeling in Engineering & Sciences 2023年第2期134卷 941-955页

作者： Kamal Shah Hafsa Naz Thabet Abdeljawad aziz khan Manar A.Alqudah Department of Mathematics and Sciences Prince Sultan UniversityRiyadh11586Saudi Arabia Department of Mathematics University of MalakandChakdara Dir(L)Khyber Pakhtunkhwa18000Pakistan Department of Medical Research China Medical UniversityTaichung40402Taiwan Department of Mathematical Sciences Faculty of SciencesPrincess Nourah bint Abdurahman UniversityRiyadh11671Saudi Arabia

In this manuscript,an algorithm for the computation of numerical solutions to some variable order fractional differential equations(FDEs)subject to the boundary and initial conditions is *** use shifted Legendre polynomials for the required numerical algorithm to develop some operational ***,operational matrices are constructed using variable order differentiation and *** are finding the operationalmatrices of variable order differentiation and integration by omitting the discretization of *** the help of aforesaid matrices,considered FDEs are converted to algebraic equations of Sylvester ***,the algebraic equations we get are solved with the help of mathematical software like Matlab or Mathematica to compute numerical *** examples are given to check the proposed method’s accuracy and graphical *** and numerical solutions are also compared in the paper for some *** efficiency of the method can be enhanced further by increasing the scale level.

关键词： Operational matrices shifted legendre polynomials FDEs variable order

Theory and Semi-Analytical Study of Micropolar Fluid Dynamics through a Porous Channel

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Computer Modeling in Engineering & Sciences 2023年第8期136卷 1473-1486页

作者： aziz khan Sana Ullah Kamal Shah Manar A.Alqudah Thabet Abdeljawad Fazal Ghani Department of Mathematics and Sciences Prince Sultan UniversityP.O.Box 66833Riyadh11586Saudi Arabia Department of Mathematics Abdul Wali Khan UniversityMardanP.O.Box 23200Khyber Pakhtunkhwa23200Pakistan Department of Mathematics University of MalakandChakdara Dir(L)Khyber Pakhtunkhwa18000Pakistan Department of Mathematical Sciences Faculty of SciencesPrincess Nourah bint Abdurahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Medical Research China Medical UniversityTaichung40402Taiwan

In this work,We are looking at the characteristics of micropolar flow in a porous channel that’s being driven by suction or *** working of the fluid is described in the *** can reduce the governing nonlinear partial differential equations(PDEs)to a model of coupled systems of nonlinear ordinary differential equations using similarity variables(ODEs).In order to obtain the results of a coupled system of nonlinear ODEs,we discuss a method which is known as the differential transform method(DTM).The concern transform is an excellent mathematical tool to obtain the analytical series solution to the nonlinear *** observe beast agreement between analytical method and numerical method,we compare our result with the Rung-Kutta method of order four(RK4).We also provide simulation plots to the obtained result by using *** plots,we discuss the effect of different parameters which arise during the calculation of the flow model equations.

关键词： Mass transfer micropolar flow porous channel similarity variables differential transform method

Field evaluation of some bait additives against Indian crested porcupine(Hystrix indica)(Rodentia:Hystricidae)

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Integrative Zoology 2013年第3期8卷 285-292页

作者： Muhammad MUSHTAQ Iftikhar HUSSAIN Afsar MIAN Shahid MUNIR Irfan AHMED Abdul aziz khan Department of Zoology PMAS Arid Agriculture UniversityRawalpindiPakistan Wildlife Management PMAS Arid Agriculture UniversityRawalpindiPakistan National Agricultural Research Centre IslamabadPakistan

This research study evaluated the effect of different additives on the bait consumption by Indian crested porcupine,a serious forest and agricultural pest,under field *** additives(saccharin,common salt,bone meal,fish meal,peanut butter,egg yolk,egg shell powder,yeast powder,mineral oil and coconut oil)at 2 and 5%each were tested for their relative preference,using groundnut-maize(1:1)as basic *** the additives were tested under a no-choice test *** control tests,no additive was mixed with the basic *** at 5%concentration significantly enhanced the consumption of bait over the basic bait,while 2%saccharin supplemented bait resulted in a non-significant bait *** other additives did not enhance the consumption of the bait material;rather,these worked as ***,the repellency was lowest with the common salt,followed by egg yolk,egg shell powder,bone meal,peanut butter,mineral oil,fish meal and yeast powder,while coconut remained the most repellent *** present study suggested that groundnut-maize(1:1)supplemented with 5%saccharin was the preferred bait combination,and can be used with different rodenticides for the management of Indian crested porcupine.

关键词： additives baits evaluation Hystrix indica Indian crested porcupine

Sleep Posture Classification Using RGB and Thermal Cameras Based on Deep Learning Model

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Computer Modeling in Engineering & Sciences 2024年第8期140卷 1729-1755页

作者： Awais khan Chomyong Kim Jung-Yeon Kim Ahsan aziz Yunyoung Nam Department of ICT Convergence Soonchunhyang UniversityAsan31538Korea ICT Convergence Research Center Soonchunhyang UniversityAsan31538Korea Emotional and Intelligent Child Care Convergence Research Center Soonchunhyang UniversityAsan31538Korea

Sleep posture surveillance is crucial for patient comfort,yet current systems face difficulties in providing compre-hensive studies due to the obstruction caused by *** posture assessment remains challenging because of the complex nature of the human body and variations in sleep ***,this study introduces an innovative method utilizing RGB and thermal cameras for comprehensive posture classification,thereby enhancing the analysis of body position and *** method begins by capturing a dataset of sleep postures in the form of videos using RGB and thermal cameras,which depict six commonly adopted postures:supine,left log,right log,prone head,prone left,and prone *** study involves 10 participants under two conditions:with and without ***,the database is normalized into a video *** subsequent step entails training a fine-tuned,pretrained Visual Geometry Group(VGG16)and ResNet50 *** the third phase,the extracted features are utilized for *** fourth step of the proposed approach employs a serial fusion technique based on the normal distribution to merge the vectors derived from both the RGB and thermal ***,the fused vectors are passed to machine learning classifiers for final *** dataset,which includes human sleep postures used in this study’s experiments,achieved a 96.7%accuracy rate using the Quadratic Support Vector Machine(QSVM)without the ***,the Linear SVM,when utilized with a blanket,attained an accuracy of 96%.When normal distribution serial fusion was applied to the blanket features,it resulted in a remarkable average accuracy of 99%.

关键词： Human sleep posture VGG16 deep learning ResNet50 fusion machine learning

Advancements in adsorption and photodegradation technologies for Rhodamine B dye wastewater treatment: fundamentals, applications, and future directions

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Green Chemical Engineering 2024年第4期5卷 440-460页

作者： Peter Olusakin Oladoye Mohammed Kadhom Idrees khan Kosar Hikmat Hama aziz Yakubu Adekunle Alli Department of Chemistry and Biochemistry Florida International University Analytical/Environmental Chemistry Unit Department of Pure and Applied ChemistryLadoke Akintola University of Technology Department of Environmental Science College of Energy and Environmental ScienceAlkarkh University of Science School of Chemistry and Chemical Engineering Northwestern Polytechnical University Department of Chemistry College of ScienceUniversity of Sulaimani Department of Medical Laboratory of Science College of Health SciencesUniversity of Human Development CNRS LCC (Laboratoire de Chimie de Coordination)UPR8241Université de Toulouse

Organic dye pollutants present in wastewater pose a significant global challenge. Among pollutants, the synthetic dye Rhodamine B(RB) stands out due to its non-biodegradable nature and associated neurotoxic, carcinogenic,and respiratory irritant properties. Extensive research has been conducted on the efficacy of adsorption and photodegradation techniques for the removal of RB from wastewater. While adsorption and advanced oxidation processes(AOPs) have gained considerable attention for their effectiveness in recent years, the underlying behaviors and mechanisms of these technologies remain incompletely understood. Therefore, a comprehensive of recent research progress in this domain is imperative to clarify the basics and present the up-to-date *** review provides an in-depth exploration of the fundamentals, advancements, and future trajectories of RB wastewater treatment technologies, mainly encompassing adsorption and photodegradation. This work starts with a general introduction of outlining the sources, toxicity, and diverse applicable removal strategies. Subsequently, it thoroughly examines crucial techniques within non-photochemical, photochemical, and adsorption technologies, such as UV light assisted AOP, catalyst assisted AOP, ozonation, Fenton system, electrochemical AOP, and adsorption technology. The primary objective is to furnish a broad overview of these techniques,elucidating their effectiveness, limitations, and applicability. Following this, the review encapsulates state-of-theart computational simulations pertaining to RB adsorption and interactions with clays and other ***, it delves into column adsorption of RB dye, and elucidates various influencing factors, including bed height, feed concentration, pollutant(RB) feeding or flow rate, and column regeneration. This panoramic review aims to provide valuable insights into suitable techniques, research gaps, and the applicability of nonphotochemical, photochemical, and

关键词： Rhodamine B Wastewater treatment Photodegradation Column adsorption Dye removal Advanced oxidation processes

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MTDC网络中VSC的最佳控制策略

MTDC网络中VSC的最佳控制策略

作者： Shahid aziz khan 华北电力大学(北京)

学位级别：硕士

过去十年来,电力电子领域的技术进步导致电力系统领域的全球进步。此外,传统能源资源的不断消耗及其相关的环境危害导致绿色和可再生能源发电的趋势。与传统的HVAC传输系统相比,高压直流（HVDC）传输系统在成本、效率、可靠性和可再生... 详细信息

过去十年来,电力电子领域的技术进步导致电力系统领域的全球进步。此外,传统能源资源的不断消耗及其相关的环境危害导致绿色和可再生能源发电的趋势。与传统的HVAC传输系统相比,高压直流（HVDC）传输系统在成本、效率、可靠性和可再生能源集成方面具有若干优势。多终端直流（MTDC）配电网络是将输电系统与负荷中心连接的平台,为可再生能源与主电网的集成提供了灵活性。转换器是高压直流输电系统中的中干。以前安装的系统包含线路换向转换器（LCC）,这是当时唯一可靠和成熟的选项。但目前的系统更喜欢电压源转换器（VSC）,它提供更高的额定和控制。模块化多电位转换器（MMC）是功率转换器的最先进的形式,是电力电子和开关技术高速发展的产物。VSC和MMC构成了现代电力系统基础设施的基础。VSC-MTDC和MMC-MTDC系统可实现高功率应用、大规模集成、智能可靠的运行。基于VSC或MMC的系统的性能取决于转换器的控制器设置。通常使用命中和试验方法或操作员的经验来调整转换器。在多终端直流（MTDC）网络中,由于多个电网同时介入,转换器控制变得更加关键。这种情况要求转换器有最佳、智能的控制策略,以确保平稳、高质量、高效率地运行。本研究重点研究和理解VSC,以模糊逻辑和人工智能（深度学习）技术为基础,对VSC进行最优控制策略的研究和理解,operation在操作效率、平稳性能和协调、快速沉降时间、更好的回转率、最小下冲和最小过冲响应方面提高了响应能力。在MATLAB/SIMULINK中设计和模拟的基于VSC的三端MTDC系统上实现了模糊逻辑和深度学习技术。这些技术有助于优化控制器的参数,进而产生优化的响应。研究还侧重于为VSC-MTDC网络实施统一的电压下垂控制策略。在PSCAD中设计并模拟了三端子MTDC系统,用于电压下垂控制策略。

关键词：优化电压源转换器模块化多级转换器 HVDC MTDC分销网络

Hematologic Characteristics of Patients with Active Pulmonary, Extra-Pulmonary and Disseminated Tuberculosis: A Study of over Six Hundred Patients

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Journal of Tuberculosis Research 2020年第2期8卷 33-41页

作者： Laith Alamlih Mutaz Albakri Wanis H. Ibrahim aziz khan Fahmi Y. khan Department of Medicine Hamad General Hospital Doha Qatar Pulmonary Division Department of Medicine Hamad General Hospital Doha Qatar Department of Medicine Hamad General Hospital Weill-Cornell Medicine Doha Qatar Department of Internal Medicine Uconn Health Farmington CT USA

Background: Many inflammatory cells, cytokines, acute phase reactants as well as platelets are recruited in the battle against the invading mycobacterium. As a result, alterations in the hematologic profile of infected patients are anticipated. Objectives: The primary objective was to investigate the various hematologic characteristics of patients with active tuberculosis. The secondary objective was to study the correlation between such hematologic characteristics and the type of tuberculosis including pulmonary, extra-pulmonary, and disseminated. Methods: This was a retrospective, descriptive study investigating the hematological findings in adult patients (aged 18 years or older) with active, bacteriologically-confirmed tuberculosis infection. Results: Among the 605 confirmed active tuberculosis cases, 465 (78.8%) were pulmonary, 104 (17.6%) extra-pulmonary, and 21 (3.6%) disseminated type. The mean age at diagnosis was 33.4 ± 11.4 years and males constituted 80.2% of cases. Peripheral leukocytosis was observed in 177 (30.1%) and leukopenia in 7 (1.2%) (Pulmonary type of tuberculosis was significantly associated with leukocytosis (P = 0.000)). Neutrophilia, lymphocytosis, monocytosis, eosinophilia, and basophilia were observed in 15.3%, 3.1%, 10.4%, 6.3% and 4.7% respectively. Thrombocytopenia and thrombocytosis were observed in 3.9% and 26.7% respectively. Anemia was observed in 44.8% of all cases with 4.4% had severe anemia and 60.3% had anemia of chronic diseases. Erythrocyte sedimentation rate was high in 77.2% of cases and ≥100 mm/hr in 5%. C-reactive protein was high in 93.4% and it exceeded 40 mg/L in 69.3%. Conclusion: There is a wide range of variability in the leukocyte and differential leukocyte abnormalities observed in patients with active tuberculosis. Leukocytosis can be seen in one-third of patients with pulmonary tuberculosis. Anemia of chronic diseases is the most common type of anemia observed in tuberculosis

关键词： Tuberculosis Anemia Leukocytes Blood Sedimentation Platelet Count C-Reactive Protein