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Journal of Materials Science and Chemical Engineering 2020年第9期8卷 31-44页

作者： Muhammad Awais Muhammad Shahid Mohsin Saleem fariz aneeq Muhammad Shoaib Butt Malik Adeel Umer School of Chemical and Materials Engineering National University of Sciences & Technology Islamabad Pakistan

Polychloroprene (PC) based contact adhesives are widely used in various applications;however, there is a possibility to improve the properties of PC adhesive. Modifications of polymers can enhance the properties of the material, e.g. increase in thermal stability, compatibility, rigidity, physical response, flexibility and improve the polymer process ability. In the current study, improved formulation of solvent-based adhesive was developed, and the properties were further enhanced by the addition of nano-reinforcement of multiwall carbon nanotubes (MWCNTs). The addition of nano-reinforcement was optimized to obtain improvement in the bond strength and also to enhance its resistance at a high temperature (~100°C). This paper discusses the uniform dispersion of MWCNTs during the synthesis of polychloroprene solvent-based adhesive, thereby improving its structural properties. Incorporation of MWCNTs-solvent-based adhesives resulted in a 20% - 35% improvement in 180° peel strength determined on flexible substrates such as canvas, leather. The reinforced based adhesive also exhibited improved thermal stability and weather resistance compared with unreinforced adhesive. The MWCNTs- solvent-based contact adhesives is a potential candidate in an industrially relevant branch of adhesives commonly used in structural applications, e.g., footwear, plastic, leather, automobile, construction industries, etc.

关键词： Nanocomposite Polychloroprene Adhesive Peel Strength Carbon Nanotubes

Identification of thermal front dynamics in the northern Malacca Strait using ROMS 3D-model

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Journal of Oceanology and Limnology 2024年第1期42卷 41-57页

作者： Ku Nor Afiza Asnida Ku MANSOR Nur Hidayah ROSELI Poh Heng KOK fariz Syafiq Mohamad ALI Mohd Fadzil Mohd AKHIR Institute of Oceanography and Environment Universiti Malaysia TerengganuKuala Nerus 21030Malaysia Faculty of Science and Marine Environment Universiti Malaysia TerengganuKuala Nerus 21030Malaysia

The thermal front in the oceanic system is believed to have a significant effect on biological *** an era of climate change,changes in heat regulation between the atmosphere and oceanic interior can alter the characteristics of this important *** the simulation results of the 3D Regional Ocean Modelling System(ROMS),we identified the location of thermal fronts and determined their dynamic variability in the area between the southern Andaman Sea and northern Malacca *** Single Image Edge Detection(SIED)algorithm was used to detect the thermal front from model-derived *** show that a thermal front occurred every year from 2002 to 2012 with the temperature gradient at the location of the front was 0.3°C/*** to the years affected by El Ni?o and negative Indian Ocean Dipole(IOD),the normal years(e.g.,May 2003)show the presence of the thermal front at every selected depth(10,25,50,and 75 m),whereas El Ni?o and negative IOD during 2010 show the presence of the thermal front only at depth of 75 m due to greater warming,leading to the thermocline deepening and enhanced *** May 2003,the thermal front was separated by cooler SST in the southern Andaman Sea and warmer SST in the northern Malacca *** higher SST in the northern Malacca Strait was believed due to the besieged Malacca Strait,which trapped the heat and make it difficult to release while higher chlorophyll a in Malacca Strait is due to the freshwater conduit from nearby rivers(Klang,Langat,Perak,and Selangor).Furthermore,compared to the southern Andaman Sea,the chlorophyll a in the northern Malacca Strait is easier to reach the surface area due to the shallower thermocline,which allows nutrients in the area to reach the surface faster.

关键词： regional ocean modelling system thermal front Andaman Sea Malacca Strait single image edge detection algorithm

GbLMI1 over-expression improves cotton aboveground vegetative growth

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Journal of Integrative Agriculture 2024年第10期23卷 3457-3467页

作者： Zhili Chong Yunxiao Wei Kaili Li Muhammad aneeq Ur Rahman Chengzhen Liang Zhigang Meng Yuan Wang Sandui Guo Liangrong He Rui Zhang College of Agronomy Tarim UniversityAlar 843300China Biotechnology Research Institute Chinese Academy of Agricultural SciencesBeijing 100081China

Leaves are the main organ for photosynthesis and organic synthesis in *** shape has important effects on photosynthetic efficiency and canopy formation,thereby affecting cotton *** studies have shown that LMI1(LATE MERISTEM IDENTITY1)is the main gene regulating leaf *** this study,the LMI1 gene was inserted into the 35S promoter expression vector,and cotton plants overexpressing LMI1(OE)were obtained through genetic *** analysis of the biological traits of the T_(1) and T_(2) populations showed that compared to the wild type(WT),OE plants had significantly larger leaves,thicker stems and significantly greater dry ***,plant sections of the main vein and petiole showed that the numbers of cells in those tissues of OE plants were significantly *** addition,RNA-seq analysis revealed the differential expression of genes related to gibberellin synthesis and NAC gene family(genes containing the NAC domain)between the OE and WT plants,suggesting that LMI1 is involved in secondary wall formation and cell proliferation,which promotes stem ***,Gene Ontology(GO)analysis revealed enrichment in the terms of calcium ion binding,and Kyoto Encyclopedia of Genes and Genomes(KEGG)analysis showed enrichment in the terms of fatty acid degradation,phosphatidylinositol signal transduction system,and c AMP(cyclic adenosine monophosphate)signal *** results suggested that LMI1 OE plants are responsive to gibberellin hormone signals,and have altered messenger signals(c AMP,Ca^(2+))which amplify this function,to promote stronger aboveground vegetative *** study found the LMI1 greatly increased the vegetative growth in cotton,which is the basic requirement for higher yield.

关键词： LMI1 over-expressing cotton vegetative growth

A new SINS/GPS sensor fusion scheme for UAV localization problem using nonlinear SVSF with covariance derivation and an adaptive boundary layer

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Chinese Journal of Aeronautics 2016年第2期29卷 424-440页

作者： fariz Outamazirt Fu Li Lin Yan Abdelkrim Nemra School of Automation Science and Electrical Engineering Beihang University School of Control and Automation Ecole Militaire Polytechnique

The state estimation strategy using the smooth variable structure filter （SVSF） is based on the variable structure and sliding mode concepts. As presented in its standard form with a fixed boundary layer limit, the value of the boundary layer width is not precisely known at each step and may be selected based on a priori knowledge. The boundary layer width reflects the level of uncertainty in the model parameters and disturbance characteristics, where large values of the boundary layer width lead to robustness without optimality and small values of the boundary layer width provide optimality with poor robustness. As a solution and to overcome these limitations, an adaptive smoothing boundary layer is required to achieve greater robustness and suitable accuracy. This adapted value of the boundary layer width is obtained by minimizing the trace of the a posteriori covariance matrix. In this paper, the proposed new approach will be considered as another alternative to the extended Kalman filters （EKF）, nonlinear H∞ and standard SVSF-based data fusion techniques for the autonomous airborne navigation and self-localization problem. This alternative is based on strapdown inertial navigation system （SINS） and GPS data using the nonlinear SVSF with a covariance derivation and adaptive boundary layer width. Furthermore, the full mathematical model of the SINS/GPS navigation system considering the unmanned aerial vehicle （UAV） position, velocity and Euler angle as well as gyro and accelerometer biases will be used in this paper to estimate the airborne position and velocity with better accuracy.

关键词： Adaptive smoothing bound-ary layer Autonomous airborne navi-gation GPS Smooth variable structurefilter (SVSF) Strapdown inertial naviga-tion system (SINS)

Molecular Mechanisms Contributing to Resistance to Tyrosine Kinase-Targeted Therapy for Non-Small Cell Lung Cancer

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Clinical oncology and cancer researeh 2012年第1期9卷 18-22页

作者： fariz Nurwidya Akiko Murakami Fumiyuki Takahashi Kazuhisa Takahashi Department of Respiratory Medicine Juntendo University School of Medicine

One of the most important pathways in non-small cell lung cancer(NSCLC) is the epidermal growth factor receptor(EGFR) pathway. This pathway affects several crucial processes in tumor development and progression,including tumor cell proliferation,apoptosis regulation,angiogenesis,and metastatic *** EGFR is currently being intensely *** are witnessing the development of a number of potential molecular-inhibiting treatments for application in clinical *** the last decade,the tyrosine kinase(TK) domain of the EGFR was identified in NSCLC patients,and it has responded very well with a dramatic clinical improvement to TK inhibitors such are gefitinib and ***,there were primary and/or secondary resistance to these treatments,as shown by clinical *** molecular biology studies provided some explanations for the drug resistance *** molecular mechanisms of resistance need to be *** in-depth understanding of these targeted-therapy resistance may help us explore new strategies for overcoming or reversing the resistance to these inhibitors for the future of NSCLC treatment.

关键词： carcinoma non-small-cell lung mutation drug resistance

Influence of urban air pollution on the population in the Klang Valley,Malaysia:a spatial approach

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Ecological Processes 2022年第1期11卷 126-141页

作者： Siti Haslina Mohd Shafie Mastura Mahmud Suzani Mohamad Nor Lita Fadilah Rameli Ramdzani Abdullah Ahmad fariz Mohamed Centre for Research in Development Social and Environment(SEEDS)Faculty of Social Sciences and HumanitiesUniversiti Kebangsaan MalaysiaBangiSelangorMalaysia Department of Environment Faculty of Forestry and Envi-ronmentUniversiti Putra MalaysiaSerdangSelangorMalaysia Institute for Environment and Development(LESTARI) Universiti Kebangsaan MalaysiaBangiSelangorMalaysia.

Background:Urban air pollution resulting from economic growth as well as urbanization impacts the health of *** study aims to examine the spatial distribution of particulate matter(PM_(10))and the risk of exposure for the population in the Klang Valley,an urban conglomeration centred in Kuala Lumpur,***:The inverse distance weighted(IDW)interpolation technique in the ArcGIS platform was used to map the air quality from five air monitoring *** statistics of the Global Moran’s I Spatial Autocorrelation and Optimized Hot Spot Analysis were used to estimate the spatial clustering of PM_(10).The population-weighted exposure level(PWEL)technique was used to calculate the population density susceptible to PM_(10)and the AirQ+model was applied to estimate the proportion of the adult population at risk of chronic bronchitis due to long-term exposure to PM_(10)concentrations in the Klang ***:The highest annual mean PM_(10)concentrations at the Klang station ranged between 80 and 100μg/m^(3)from 2000 to 2009 and exceeded the New Malaysia Ambient Air Quality Standard(NMAAQS)and the World Health Organi-zation Air Quality Guidelines(WHOAQG)levels of 40 and 20μg/m^(3),*** Moran’s I results indicated that the statistically significant clusters of high PM_(10)in Klang present a health risk to the local *** PWEL results showed that levels of PM_(10)in Petaling Jaya exceeded the WHOAQG limits,potentially posing a health risk to the high-density *** AirQ+model found Klang to be a significantly high-risk area for chronic bronchitis among the adult population with 804,240 people(with a relative risk of 1.85)in ***:These high-risk values are due to rapid urbanization and high motor vehicle usage in the Klang Valley and therefore the impact of PM_(10)on the population needs to be *** situation should be taken seriously by the Department of Environment and Kuala Lumpur City Hall in addre

关键词： Population Urban air pollution Spatial distribution PM_(10) Adult chronic bronchitis risk

IGCC电厂空分装置与燃气轮机耦合特性的模拟分析

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IGCC电厂空分装置与燃气轮机耦合特性的模拟分析

作者： aneeq 华北电力大学(北京)

学位级别：硕士

本研究的目的是探讨如何将煤气化联合循环(IGCC)系统中的空分装置(ASU)转化为最佳指标。所需研究使用的是名为ebsilon professional的模拟软件包。IGCC包含多个部分,通常比传统电厂多。其中,复杂系统涉及到许多热力学和环境评价。该研... 详细信息

本研究的目的是探讨如何将煤气化联合循环(IGCC)系统中的空分装置(ASU)转化为最佳指标。所需研究使用的是名为ebsilon professional的模拟软件包。IGCC包含多个部分,通常比传统电厂多。其中,复杂系统涉及到许多热力学和环境评价。该研究涉及到ASU-GT段的整合,特别是集中在空气抽取率及其对IGCC装置效率和热力学特性的总体影响上。为了简化ASU-GT段,整个IGCC发电厂在ebsilon专业版上进行了模拟,使其运行参数更加灵活。在研究了抽气效果后,与目前的实践相比,最合适的参数组合将使设备性能增加0-5%。本研究在两种不同实验的基础上进行了妥协:1)气化炉和燃气轮机燃烧室的氮气注入速率研究;2)空气抽取速率和氮气注入速率对IGCC装置优化的影响。

关键词：空分装置抽气燃机 IGCC