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Effect of taxifolin on cold-shock damages in spermatozoa in rabbits

Asian pacific Journal of Reproduction 2023年第5期12卷 239-248页

作者： irfan yılmaz Gaffari Turk Aslıhan Cakir Cihangiroglu Tutku Can Acisu Ibrahim Halil Gungor GozdeArkali Edanur Guler Ekmen Firat University Faculty of Veterinary MedicineDepartment of Reproduction and Artificial InseminationElazigTur kiye Firat University Faculty of Veterinary MedicineDepartment of PhysiologyElazıgTurkiye

Objective:To investigate the effect of taxifolin added to rabbit semen on freezing-induced cold-shock damages in ***:Semen was collected from six adult New Zealand rabbits once a week by artificial *** collected semen was pooled at 38℃ and divided into four equal *** were diluted with 0,50,100 and 200μM taxifolin-containing Tris+egg yolk extender at 38℃ and their temperatures were lowered to 4℃.Following equilibration,semen drawn into 0.25 mL straws were frozen in an automatic semen freezing device and stored in liquid nitrogen container at-196℃.Samples were thawed in 38℃ water for 25 s and the analyses of motility,kinematic parameters,morphological deformities,changes in membrane integrity,mitochondrial membrane potential,dead-live ratio,acrosomal damages and as well as oxidative stress analyses were performed in ***:Addition of 50μM taxifolin significantly improved motility(total,progressive,rapid and static),high mitochondrial membrane potential and the ratios of spermatozoa with acrosomal damage compared to the control *** to the control group,malondialdehyde(MDA)levels in the 50 and 100μM taxifolin groups were significantly lower,while the MDA level was high and viable spermatozoa ratio was low in the 200μM taxifolin *** were no significant differences between the groups in terms of kinematic parameters,morphological deformities,membrane integrity and antioxidant ***:The low dose of taxifolin(50μM)has a positive effect and the high dose(200μM)has a negative ***,it is concluded that the addition of low-dose(50μM)taxifolin to the extenders would be a useful additive in reducing cold-shock damage that occurs during freezing of rabbit semen.

关键词： Taxifolin Semen freezing Cold-shock Oxidative stress Rabbit

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IDSSCNN-XgBoost:Improved Dual-Stream Shallow Convolutional Neural Network Based on Extreme Gradient Boosting Algorithm for Micro Expression Recognition

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Computers, Materials & Continua 2025年第1期82卷 729-749页

作者： Adnan Ahmad Zhao Li irfan Tariq Zhengran He School of Information Science and Engineering Southeast UniversityNanjing210016China

Micro-expressions(ME)recognition is a complex task that requires advanced techniques to extract informative features fromfacial *** deep neural networks(DNNs)with convolutional structures have been ***,unlike DNNs,shallow convolutional neural networks often outperform deeper models in mitigating overfitting,particularly with small ***,many of these methods rely on a single feature for recognition,resulting in an insufficient ability to extract highly effective *** address this limitation,in this paper,an Improved Dual-stream Shallow Convolutional Neural Network based on an Extreme Gradient Boosting Algorithm(IDSSCNN-XgBoost)is introduced for ME *** proposed method utilizes a dual-stream architecture where motion vectors(temporal features)are extracted using Optical Flow TV-L1 and amplify subtle changes(spatial features)via EulerianVideoMagnification(EVM).These features are processed by IDSSCNN,with an attention mechanism applied to refine the extracted effective *** outputs are then fused,concatenated,and classified using the XgBoost *** comprehensive approach significantly improves recognition accuracy by leveraging the strengths of both temporal and spatial information,supported by the robust classification power of *** proposed method is evaluated on three publicly available ME databases named Chinese Academy of Sciences Micro-expression Database(CASMEII),Spontaneous Micro-Expression Database(SMICHS),and Spontaneous Actions and Micro-Movements(SAMM).Experimental results indicate that the proposed model can achieve outstanding results compared to recent *** accuracy results are 79.01%,69.22%,and 68.99%on CASMEII,SMIC-HS,and SAMM,and the F1-score are 75.47%,68.91%,and 63.84%,*** proposed method has the advantage of operational efficiency and less computational time.

关键词： ME recognition dual stream shallow convolutional neural network euler video magnification TV-L1 XgBoost

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A selective approach to the surgical management of periampullary cancer patients and its outcome

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Hepatobiliary & Pancreatic Diseases International 2014年第6期13卷 628-633页

作者： Omar J Shah irfan Robbani Parveen Shah Sadaf A Bangri irfan J Khan Mohammad y Bhat Manmohan Singh Departments of Surgical Gastroenterology Sher-i-Kashmir Institute of Medical Sciences Srinagar Kashmir India Radiodiagnosis & Imaging Sher-i-Kashmir Institute of Medical Sciences Srinagar Kashmir India Pathology Sher-i-Kashmir Institute of Medical Sciences Srinagar Kashmir India Departments of Surgical Gastroenterology Sher-i-Kashmir Institute of Medical Sciences Srinagar Kashmir India Departments of Surgical Gastroenterology Sher-i-Kashmir Institute of Medical Sciences Srinagar Kashmir India

BACKGROUND： Pancreaticoduodenectomy is a high risk, complex, technically challenging operation associated with significant perioperative morbidity and mortality. This study on the surgical management of periampullary cancer patients is based on our experience in a period of nearly 13 years. METHODS： The study was conducted on two groups of patients： group A included 42 patients who were treated between January 2000 and September 2005 and group B included 134 patients who were treated between October 2005 to October 2012. Preoperative, intraoperative and postoperative details of all these patients were collected, tabulated and analyzed to assess the impact of the selective approach introduced in the department with effect from October 2005. RESULTS： Intraoperative details revealed highly significant differences in the management of the two groups of patients in respect of operative time （250.4 vs 126.6 minutes; P〈0.001）, operative blood loss （1070.2 vs 414.9 mL; P〈0.001） and intraoperative blood transfusion （1A vs 0.2 units; P〈0.001）. Variations between the two groups in the frequency of complications were found to be statistically insignificant. However, the difference between the two groups in the overall morbidity of patients （47.6% vs 26.1%; P=0.009） and the length of their hospital stay （11.8 vs 7.8 days; P〈0.001） were significant. CONCLUSION： A selective approach applied to the surgical management of periampullary cancer patients is a step in the right direction.

关键词： pancreaticoduodenectomy superior approach technique Whipple's operation

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A review of recent advancements in finite element formulation for sandwich plates

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Chinese Journal of Aeronautics 2019年第4期32卷 785-798页

作者： Shehzaib irfan Faisal SIDDIQUI Aerospace Engineering Department College of Aeronautical Engineering National University of Sciences and TechnologyRisalpur

Use of composite structures is exponentially growing in different fields due to their higher strength-to-weight ratio. This application trend requires that accurate theoretical explanations and their finite element models be developed for analyzing sandwich plates before finalizing the designs. This paper reviews the recent research trends of finite element formulations developed for analyzing sandwich plates. This paper reviews the finite element models developed after the year 2000. Initially, the finite element formulations based on first order shear deformation theory, higher order shear deformation theories, mixed solid-shell elements, zig-zag theories and global–local theories are presented. Then, some finite element formulations developed to analyze a very new class of structures called piezoelectric structures are presented. At the end, some formulations to analyze a very critical phenomenon called buckling are presented.

关键词： Buckling Finite element FSDT HSDT Laminated composites Piezoelectric Sandwich plates Zig-zag theory

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Arabic Bank Check Processing: State of the Art

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Journal of Computer Science & Technology 2013年第2期28卷 285-299页

作者： irfan Ahmad Sabri A.Mahmoud Information and Computer Science Department King Fahd University of Petroleum & Minerals

In this paper, we present a general model for Arabic bank check processing indicating the major phases of a check processing system. We then survey the available databases for Arabic bank check processing research. The state of the art in the different phases of Arabic bank check processing is surveyed （i.e., pre-processing, check analysis and segmentation, features extraction, and legal and courtesy amounts recognition）. The open issues for future research are stated and areas that need improvements are presented. To the best of our knowledge, it is the first survey of Arabic bank check processing.

关键词： handwriting analysis document analysis text processing feature evaluation and selection pattern analysis

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Evaluation of the adsorption potential of titanium dioxide nanoparticles for arsenic removal

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Journal of Environmental Sciences 2009年第3期21卷 402-408页

作者： NABI Deedar ASLAM irfan QAZI Ishtiaq A Institute of Environmental Science and Engineering National University of Sciences and Technology Rawalpindi 46000 Pakistan

The adsorption potential of titanium dioxide （TiO2） nanoparticles for removing arsenic from drinking water was evaluated. Pure and iron-doped TiO2 particles are synthesized via sol-gel method. The synthesized TiO2 nanoparticles were then immobilized on ordinary sand for adsorption studies. Adsorption isotherms were conducted on the synthesized nanoparticles as well as the sand coated with TiO2 nanoparticles under varying conditions of air and light, namely, the air-sunlight （A-SL）, air-light （AL）, air-dark （AD） and nitrogen-dark （ND）. X-ray diffraction （XRD） analysis showed that the pure and iron-doped TiO2 nanoparticles were in 100% anatase crystalline phase with crystai sizes of 108 and 65 nm, respectively. Adsorption of arsenic on the three adsorbents was non-linear that could be described by the Freundlich and Langmuir adsorption models. Iron doping enhanced the adsorption capacity of TiO2 nanoparticles by arresting the grain growth and making it visible light responsive resulting in a higher affinity for arsenic. Similarly, the arsenic removal by adsorption on the sand coated with TiO2 nanoparticles was the highest among the three types of sand used. In all cases, As（V） was adsorbed more compared with As（Ⅲ）. The solution pH appeared to be the most important factor in controlling the amount of arsenic adsorbed.

关键词： arsenic removal titanium dioxide nanoparticles adsorption isotherm immobilization of nanoparticles on sand

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Prospects of shallow geothermal systems in HVAC for NZEB

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Energy and Built Environment 2021年第4期2卷 425-435页

作者： irfan Ahmad Gondal US-Pakistan Centre for Advanced Studies in Energy NUSTPakistan

Shallow geothermal systems use the thermal inertia of the earth to provide a temperature gradient between the ambient conditions and the underground *** thermal inertia can be used by the heat exchangers to provide space heating and cooling during the winters and *** paper provides a brief but broad overview of the different active and passive technologies involved in the use of heat exchangers for HVAC in order to achieve a near net zero energy *** the different types of ground heat exchangers and heat pumps are introduced along with the relevant studies of significance in this *** has been demonstrated that the different types of heat exchangers can be integrated with thermally active building envelopes and renewable energy resources to significantly minimize the building energy *** a pathway has been devised for use of ground heat exchangers to realize a net zero energy building.

关键词： Shallow geothermal energy HVAC Near zero energy building Passive technologies

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Optimization of a fermented pumpkin-based beverage to improve Lactobacillus mali survival and-glucosidase inhibitory activity:A response surface methodology approach

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Food Science and Human Wellness 2018年第1期7卷 57-70页

作者： W.y.Koh U.Uthumporn A.Rosma A.R.irfan y.H.Park Food Technology Division School of Industrial TechnologyUniversiti Sains MalaysiaMinden 11800PenangMalaysia Bioprocess Division School of Industrial TechnologyUniversiti Sains MalaysiaMinden 11800PenangMalaysia Department of Applied Microbiology and Biotechnology Yeungnam UniversityGyeongsanSouth Korea

The aim of this research was to develop an optimum fermentation and composition model for a new fermented pumpkin-based beverage with high probiotic survival and-glucosidase inhibitory *** between fermentation temperature,inoculum and ingredient concentration with response variables(fermentation time at the fermentation endpoint pH 4.5,survival rate of Lactobacillus mali K8 in pumpkin-based beverage treated with simulated gastrointestinal tract enzyme fluids,-glucosidase inhibitory activity and sensory overall acceptability after 4 weeks of refrigerated storage)was investigated using response surface *** formulation was obtained at an approximation of 40%pumpkin puree concentration,8 Log CFU/mL inoculum and at 35℃.The product derived from this optimum formula reached the fermentation endpoint after 28.34±0.10 h and the quality change during 4 weeks storage was *** product achieved 88.56±0.67%of *** survival after treatment with simulated gastric and intestinal juices;demonstrated 95.89±0.30% α-glucosidase inhibitory activity,as well as scored 6.99±0.40 on sensory overall acceptability after 4 weeks of *** findings illustrated that the model is effective in improving probiotic survival and α-glucosidase inhibitory activity with excellent sensory acceptability,thus may offer a dietary means for the management of hyperglycaemia.

关键词： Probiotics Response surface methodology Box-Behnken Hyperglycaemia Functional food

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Machine Learning for Organic Photovoltaic Polymers:A Minireview

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Chinese Journal of Polymer Science 2022年第8期40卷 870-876,I0006页

作者： Asif Mahmood Ahmad irfan Jin-Liang Wang Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering in Ministry of Industry and Information TechnologySchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyKey Laboratory of Cluster Science of Ministry of EducationBeijing100081China Department of Chemistry College of ScienceKing Khalid UniversityAbha61413Saudi Arabia

Machine learning is a powerful tool that can provide a way to revolutionize the material *** use for the designing and screening of materials for polymer solar cells is also *** of efficient polymeric materials for solar cells is really difficult *** have synthesized and fabricated so many *** the results and get feedback for further research requires an innovative *** this minireview,we provides brief introduction of machine *** importance of machine learning is also mentioned,and the application of machine learning for polymeric material design is *** key challenges that are hindering the wide spread use of machine are *** are also given to improve the use of data *** predictions using machine learning maybe not highly accurate but it definitely better than no prediction at all.

关键词： Machine learning Polymer solar cells Data science Descriptors Polymers

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Corrosion Inhibition of SiCp/5A06 Aluminum Metal Matrix Composite by Cerium Conversion Treatment

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Chinese Journal of Aeronautics 2009年第6期22卷 670-676页

作者： irfan Aziz Zhang Qi Xiang Min School of Materials Science and Engineering Beo'ing University of Aeronautics and Astronautics Beijing 100191 China

This article studies the effects of the CeCl3 concentrations in conversion solutions with and without addition of NaCl, pH-values of conversion solution, drying temperature, time and temperature of immersion on the Ce-conversion coatings for corrosion protection of the SiCp/5A06 Al-MMC and 5A06 Al-alloy in the 3.5% NaCl aqueous solution at room temperature. Potentiodynamic polarization tests reveal that the Ce-conversion treatment could markedly improve the pitting corrosion resistance of the composite and the matrix alloy in chloride containing environment. The best corrosion resistance effects are obtained for the samples treatment in 1% CeCl3.7H2O/3.5% NaCl solution at 45℃ for 60 min, followed by drying at 100 ℃ for 30 min. Examinations by means of scanning electron microscopy （SEM）, energy dispersion spectroscopy （EDS） and X-ray photoelectron spectroscopy （XPS） indicate that this behavior is due to the precipitation of Ce-oxides/hydroxides on the cathodic intermetallics and the Al-oxide film on the rest of the metal matrix.

关键词： cerium thermal coatings SiCp/5A06 Al matrix composites potentiodynamic polarization alkaline corrosion

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