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Single Stage Oncologic Resection and Reconstruction: A Step toward Development of Sarcoma Service in Resource Constrained Country

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Modern Plastic Surgery 2013年第4期3卷 134-141页

作者： Haroon ur Rashid kashif abbas Masood Umer Islam Medical and Dental College Sialkot Pakistan The Aga Khan University Hospital Karachi Pakistan

Tumor free-margin surgical resection remains the single most important treatment in the curative therapy of musculoskeletal tumor of limbs. Refinements in surgical techniques have led to increased function preservation and limb salvage. Patients and Methods: The records of patients (n = 24) who underwent microsurgical soft tissue reconstruction subsequent to resection of limb tumour during the period 2006 to 2011 were reviewed. Primary outcome i.e. uptake of the flap was evaluated. Perioperative morbidities were also noted including donor as well as recipient site complications. Assessment of Functional outcome (Musculoskeletal Tumor Society score, MSTS) local recurrence, free survival, and disease-specific survival was also made. Results: Twenty four patients (age range: 7 - 72 years) who have undergone tumor resection followed by flap coverage were identified. Lower limb reconstruction outnumbered upper limb by 6:1. Complications included, one complete failure of free vascularized iliac crest flap done for reconstruction of a heel defect. One of the patients had secondary hemorrhage 10 days after surgery. Another patient with internal hemipelvectomy for Ewing’s sarcoma had a dura puncture during resection of sacrum. Partial epidermal necrosis was evident in four cases. Eighty three percent of the patients remained alive (n = 20), 19 of whom currently have no evidence of disease (NED) Disease recurrence was noted in three patients. Overall MSTS score was 73.5%. Conclusion: The microsurgical repair of defects is a reliable option that, though not free of complications, is necessary in selected cases. The procedure enables both adequate oncosurgical resection and function preservation.

关键词： Musculoskeletal Tumor Reconstruction Flap

Redefined Extended Cubic B-Spline Functions for Numerical Solution of Time-Fractional Telegraph Equation

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Computer Modeling in Engineering & Sciences 2021年第4期127卷 361-384页

作者： Muhammad Amin Muhammad abbas Dumitru Baleanu Muhammad kashif Iqbal Muhammad Bilal Riaz Department of Mathematics National College of Business Administration&EconomicsLahore54660Pakistan Department of Mathematics University of SargodhaSargodha40100Pakistan Department of Mathematics Faculty of Arts and SciencesCankaya UniversityAnkara06530Turkey Department of Medical Research China Medical University HospitalChina Medical UniversityTaichung40402Taiwan Institute of Space-Sciences Bucharest077125Romania Department of Mathematics Government College UniversityFaisalabad38000Pakistan Department of Mathematics University of Management and TechnologyLahore54700Pakistan

This work is concerned with the application of a redefined set of extended uniform cubic B-spline(RECBS)functions for the numerical treatment of time-fractional Telegraph *** presented technique engages finite difference formulation for discretizing the Caputo time-fractional derivatives and RECBS functions to interpolate the solution curve along the spatial *** analysis of the scheme is provided to ensure that the errors do not amplify during the execution of the numerical *** derivation of uniform convergence has also been *** computational experiments are executed to verify the theoretical *** results are compared with the existing schemes and it is concluded that the present scheme returns superior outcomes on the topic.

关键词： Extended cubic B-spline redefined extended cubic B-spline time fractional telegraph equation caputo fractional derivative finite difference method convergence

Parameters effect on heterogeneous photocatalysed degradation of phenolin aqueous dispersion of TiO_2

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Journal of Environmental Sciences 2009年第4期21卷 527-533页

作者： kashif Naeem Department of Urban and Civil Engineering Harbin Institute of Technology Shenzhen Graduate School

Photocatalytic degradation of phenol selected as model compound of organic pollutant had been investigated in aqueous titanium dioxide （TiO2） dispersion under UV irradiation. The effects of various parameters such as pH, catalyst concentration, phenol concentration, anions, metal ions, electron acceptors, and surfactants on the photocatalytic degradation of phenol were investigated. The degradation kinetics was determined by the change in phenol concentration employing UV-Vis spectrometry as a function of irradiation time. The degradation kinetics of phenol follows pseudo first-order kinetics. The results showed a significant dependence of the photocatalytic degradation of phenol on the functional parameters. The probable promising roles of the additives on the degradation process were discussed.

关键词： irradiation phenol photocatalytic degradation titanium dioxide UV light

Autonomous Parking-Lots Detection with Multi-Sensor Data Fusion Using Machine Deep Learning Techniques

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Computers, Materials & Continua 2021年第2期66卷 1595-1612页

作者： kashif Iqbal Sagheer abbas Muhammad Adnan Khan Atifa Ather Muhammad Saleem Khan Areej Fatima Gulzar Ahmad School of Computer Science National College of Business Administration&EconomicsLahore54000Pakistan Department of Computer Sciences GC UniversityLahore54000Pakistan Department of Computer Science Lahore Garrison UniversityLahore54000Pakistan Department of Computer Science Comsats University IslamabadLahore CampusLahore54000Pakistan

The rapid development and progress in deep machine-learning techniques have become a key factor in solving the future challenges of ***-based target detection and object classification have been improved due to the development of deep learning *** fusion in autonomous driving is a fact and a prerequisite task of data preprocessing from multi-sensors that provide a precise,well-engineered,and complete detection of objects,scene or *** target of the current study is to develop an in-vehicle information system to prevent or at least mitigate traffic issues related to parking detection and traffic congestion *** this study we examined to solve these problems described by(1)extracting region-of-interest in the images(2)vehicle detection based on instance segmentation,and(3)building deep learning model based on the key features obtained from input parking *** build a deep machine learning algorithm that enables collecting real video-camera feeds from vision sensors and predicting free parking *** augmentation techniques were performed using edge detection,cropping,refined by rotating,thresholding,resizing,or color augment to predict the region of bounding boxes.A deep convolutional neural network F-MTCNN model is proposed that simultaneously capable for compiling,training,validating and testing on parking video frames through *** results of proposed model employing on publicly available PK-Lot parking dataset and the optimized model achieved a relatively higher accuracy 97.6%than previous reported ***,this article presents mathematical and simulation results using state-of-the-art deep learning technologies for smart parking space *** results are verified using Python,TensorFlow,OpenCV computer simulation frameworks.

关键词： Smart parking-lot detection deep convolutional neural network data augmentation region-of-interest object detection

Influence of supports on photocatalytic degradation of phenol and 4-chlorophenol in aqueous suspensions of titanium dioxide

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Journal of Environmental Sciences 2013年第2期25卷 399-404页

作者： kashif Naeem Feng Ouyang Central Analytical Facility Division Pakistan Institute of Nuclear Science and Technology Environmental Science and Engineering Research Center Harbin Institute of Technology Shenzhen Graduate School

The photocatalytic degradation of phenol and 4-chlorophenol （4-CP） in aqueous suspensions with the use of titanium dioxide （TiO2 ） under UV irradiation was examined. The effects of different supporting materials mixed physically with TiO2 were studied to achieve maximum degradation efficiency. Among the three supports, namely activated carbon （AC）, silica （SiO2 ） and zeolite （ZSM-5）, all exhibited paramount efficiency for degradation of phenol and 4-CP and was better than TiO2 alone. The optimum concentration was found to be 50 mg for all supporting materials. The efficiency order of the three supports was as follows： AC 〉 ZSM-5 〉 SiO2 , respectively. Whilst, the degradation of phenol and 4-CP was improved from 70.6% to 87.6% and 80.6% to 89.7%, respectively, within 120 min photocatalysis in the presence of optimal amount of AC. The degradation was also comparatively enhanced in the presence of cheaper rice husk and the activity was closed to ZSM-5 and lower than AC.

关键词： 4-chlorophenol phenol photocatalytic degradation support TiO2

Association Mapping of Quantitative Trait Loci for Grain Size in Introgression Line Derived from Oryza rufipogon

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Rice science 2020年第3期27卷 246-254页

作者： kashif HUSSAIN ZHANG Yingxing Workie ANLEY Aamir RIAZ Adil abbas MdHasanuzzaman RANI WANG Hong SHEN Xihong CAO Liyong CHENG Shihua Key Laboratory for Zhejiang Super Rice Research&State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006China Southern Rice Research Institute Thatta Agriculture Research WingGovernment of SindhSindh 73130Pakistan Department of Plant Sciences University of GondarP.O.Box 196Ethiopia Bangladesh Institute of Nuclear Agriculture Dhaka 2202Bangladesh

Grain size is one of the critical agronomic traits governing grain yield and quality in ***,the underlying genetic mechanisms that control grain size in rice are poorly *** used an introgression line derived from Zhonghui 8015 and Oryza rufipogon *** introgression line was evaluated under two different environmental conditions to dissect the quantitative trait loci controlling grain ***-wide association study(GWAS)was performed using 28193 SNPs through a general linear model,and 56 significant SNPs on different loci associated with the 4 grain size traits were *** genes including GS3 and q GL3 showed substantial effects on grain length and *** new stable loci were identified with pleiotropic effects on grain ***,gene expression analyses,combined gene-based associations,and functional annotations permitted the shortlisting of important dominant genes including GS3 and q GL3.

关键词： grain size association mapping Oryza sativa Oryza rufipogon quantitative trait locus genome-wide association analysis

Variable-fidelity optimization with design space reduction

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Chinese Journal of Aeronautics 2013年第4期26卷 841-849页

作者： Mohammad kashif Zahir Gao Zhenghong School of Aeronautics Northwestern Polytechnical University

Advanced engineering systems, like aircraft, are defined by tens or even hundreds of design variables. Building an accurate surrogate model for use in such high-dimensional optimization problems is a difficult task owing to the curse of dimensionality. This paper presents a new algorithm to reduce the size of a design space to a smaller region of interest allowing a more accurate surrogate model to be generated. The framework requires a set of models of different physical or numerical fidelities. The low-fidelity （LF） model provides physics-based approximation of the high-fidelity （HF） model at a fraction of the computational cost. It is also instrumental in identifying the small region of interest in the design space that encloses the high-fidelity optimum. A surrogate model is then constructed to match the low-fidelity model to the high-fidelity model in the identified region of interest. The optimization process is managed by an update strategy to prevent convergence to false optima. The algorithm is applied on mathematical problems and a two-dimen-sional aerodynamic shape optimization problem in a variable-fidelity context. Results obtained are in excellent agreement with high-fidelity results, even with lower-fidelity flow solvers, while showing up to 39% time savings.

关键词： Airfoil optimization Curse of dimensionality Design space reduction Genetic algorithms Kriging Surrogate models Surrogate update strategies Variable fidelity

Computational and experimental investigations of a microfluidic mixer for efficient iodine extraction using carbon tetrachloride enhanced with gas bubbles

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Chinese Physics B 2023年第11期32卷 518-526页

作者： Siddique Muhammad kashif 孙林李松晶 Department of Fluid Control and Automation School of Mechatronics EngineeringHarbin Institute of TechnologyHarbin 150001China

Numerous studies have been conducted on microfluidic mixers in various microanalysis systems, which elucidated the manipulation and control of small fluid volumes within microfluidic chips. These studies have demonstrated the ability to control fluids and samples precisely at the microscale. Microfluidic mixers provide high sensitivity for biochemical analysis due to their small volumes and high surface-to-volume ratios. A promising approach in drug delivery is the rapid microfluidic mixer-based extraction of elemental iodine at the micro level, demonstrating the versatility and the potential to enhance diagnostic imaging and accuracy in targeted drug delivery. Micro-mixing inside microfluidic chips plays a key role in biochemical analysis. The experimental study describes a microfluidic mixer for extraction of elemental iodine using carbon tetrachloride with a gas bubble mixing process. Gas bubbles are generated inside the microcavity to create turbulence and micro-vortices resulting in uniform mixing of samples. The bubble mixing of biochemical samples is analyzed at various pressure levels to validate the simulated results in computational fluid dynamics(CFD). The experimental setup includes a high-resolution camera and an air pump to observe the mixing process and volume at different pressure levels with time. The bubble formation is controlled by adjusting the inert gas flow inside the microfluidic chip. Microfluidic chip-based gas bubble mixing effects have been elaborated at various supplied pressures.

关键词： microfluidic mixer iodine extraction CFD simulation micro-mixing properties

Outage Probability Analysis of Free Space Communication System Using Diversity Combining Techniques

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Computers, Materials & Continua 2022年第12期73卷 6001-6017页

作者： Hasnain kashif Muhammad Nasir Khan Department of Electrical Engineering The University of LahoreLahore54000Pakistan

Recently,free space optical(FSO)communication is gaining much attention towards the research *** reason for this attention is the promises of high data-rate,license-free deployment,and non-interfering *** can,however,give rise to major system difficulties concerning alignment and atmospheric *** is the degradation in the signal quality because of atmospheric channel impairments and *** worst effect is due to fog ***,Radio Frequency(RF)links are able to transmit the data in foggy conditions but not in *** overcome these issues related to both the FSO and RF links.A free space communication system(FSCS)is proposed,in which the hybrid technology is based on the individual FSO and RF *** is a capable solution to overcome the difficulties of the existing systems(FSO and RF)as well as to enhance the overall link reliability and *** this paper,FSCS is investigated in terms of performance throughput(i.e.,outage probability and bit-error-rate(BER))by implementing the receive diversity combining *** analysis of the outage probability of the proposed system along with the individual FSO and RF system is *** results are presented to support the *** is shown that the proposed system outperforms the individual FSO andRF system and gives a power gain of 3dB over a distinct number of receive antennas.

关键词： Atmospheric turbulence free space communication system power management signal independent noise line of sight