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Mosquito larvicidal properties of volatile oil from salt marsh mangrove plant of Sesuvium portulacastrum against Anopheles stephensi and Aedes aegypti

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Journal of Coastal Life Medicine 2013年第1期1卷 66-71页

作者： mohamed yacoob syed ali Venkatraman Anuradha syedAbudhair Sirajudeen Prathasarathy Vijaya Nagarajan Yogananth Ramachandran Rajan Peer mohamed Kalitha Parveen PG&Research Department of Biotechnology Mohamed Sathak College of Arts&ScienceSholinganallurChennai-600119Tamil NaduIndia Center for Marine Fisheries Research Institute Mandapam CampTamil NaduIndia

Objective:To identify the larvicidal activity of the volatile oil from Sesuvium portulacastrum(***)against Anopheles stephensi and Aedes ***:Volatile oil extract of *** was prepared in a graded series of *** test for the larvicidal effect of volatile oil against mosquitos larvae was conducted in accordance with the WHO standard *** of 25 early 4th instar larvae of two mosquitoes were transferred to 250 mL enamel bowl containing 199 mL of distilled water and 1 mL of plant *** experiment was conducted with triplicate with concurrent a control ***:Volatile oil extract of *** showed toxicity against 4th instar larvae of Aedes aegypti and Anopheles stephensi with equivalent LC50 value[(63±7.8)μL/mL,LCL-UCL=55.2-64.0]and LC90 value[(94.2±3.9)μL/mL]in maximum activity with minimum concentration(200μL/mL)of volatile oil and followed by maximum activity of 250μL concentration showed LC50 value=(68.0±8.2)μL/mL,LCL-UCL=66.26-69.2 and LC50 value of(55.2±2.8)μL/mL,LCL-UCL=53.7-56.9,LC90=(95.2±1.25)μL/mL and followed by 250μL of oil extract against 4th instar larvae of Aedes aegypti ***:It is inferred from the present study that,the extracts from salt marsh mangrove plan of *** are identified as a potential source of safe and efficacious mosquito control agents for the management of vector borne diseases of malaria and dengue.

关键词： Aedes aegypti Anopheles stephensi Larvicidal Oleic acid Sesuvium portulacastrum

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A Compact 28 GHz Millimeter Wave Antenna for Future Wireless Communication

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Computers, Materials & Continua 2022年第7期72卷 301-314页

作者： Shahid Khan Adil Bashir Haider ali Abdul Rauf mohamed Marey Hala Mostafa Ikram syed LCOMS ASECUniversity de LorraineMetz57070France Department of Electrical and Computer Engineering Comsats University IslamabadAbbottabad Campus22060Pakistan Electrical Engineering Department Bahauddin Zakariya UniversityMultan60800Pakistan Department of Electronics Technology University of TechnologyNowshera24100Pakistan Department of Electrical Engineering National University of Sciences and TechnologyH-12Islamabad44000Pakistan Smart Systems Engineering Laboratory College of EngineeringPrince Sultan UniversityRiyadh11586Saudi Arabia Department of Information Technology College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Computer Software Engineering Military College of SignalsNational University of Sciences and TechnologyIslamabad44000Pakistan

This article presents a novel modified chuck wagon dinner bell shaped millimeter wave(mm-wave)antenna at 28 *** proposed design has ultra-thin Rogers 5880 substrate with relative permittivity of *** design consists of T shaped resonating elements and two open ended side *** desired 28 GHz frequency response is achieved by careful parametric modeling of the proposed *** maximum achieved single element gain at the desired resonance frequency is 3.45 *** efficiency of the proposed design over the operating band is more than 88%.The impedance bandwidth achieved for−10 dB reference value is nearly 2.9 *** proposed antenna is transformed into four element linear array which increases the gain up to 10.5 *** fabricated prototype is tested for the measured *** is observed that measured results closely match the simulated *** considering its simple structure and focused radiation patterns,the proposed design is well suited for IoT(Internet of Things),mmWave microwave sensing,5G and future RF(Radio Frequency)frontends.

关键词： RF front-ends mmWave partial ground plane 28 GHz IoT 5G antenna

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Numerical Analysis of Cavity-Based Control of Base Pressure Variations at Supersonic Mach Numbers

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Fluid Dynamics & Materials Processing 2023年第6期19卷 1655-1677页

作者： Ridwan Sher Afghan Khan Jaffar syed mohamed ali Mohd.Azan Mohammed Sapardi Abdul Aabid Mechanical and Aerospace Engineering Department Faculty of EngineeringInternational Islamic UniversityKuala Lumpur53100Malaysia Department of Engineering Management College of EngineeringPrince Sultan UniversityRiyadh11586Saudi Arabia

In the present study,the base pressure variations induced by the presence of a cavity,known to have a strong influence of the behaviour of supersonic projectiles,are investigated through numerical solution of the balance equations for mass,momentum,and *** area ratio of four is considered and numerical simulations are carried out at Mach M=1.2,1.4,1.6,and 1.8 assuming no cavity or cavity locations 0.5D,1D,1.5D,and *** inlet pressure of the nozzle is considered as a flow *** Taguchi method is also used,and the considered cases are then analyzed using a full factorial experimental *** results show that the cavity is effective in increasing the base pressure for the conditions *** other nozzle pressure ratios,cavities do not lead to passive control due the change in the reattachment *** distribution of wall pressure reveals that,in general,a cavity used to implement passive control of the base pressure does not adversely influence the flow pattern in the domain.

关键词： Mach number cavity Taguchi base flow base drag

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Evaluation of anti-resistant activity of Auklandia(Saussurea lappa) root against some human pathogens

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Asian Pacific Journal of Tropical Biomedicine 2013年第7期3卷 557-562页

作者： Sidgi syed Anwer Hasson Mohammed Saeed Al-Balushi KhazinaAlharthy JumaZaidAl-Busaidi MunaSulimanAldaihani Mohammed Shafeeq Othman Elias Antony Said Omar Habal Talal Abdullah Sallam ali Abdullah Aljabri mohamed AhmedIdris Department of Microbiology and Immunology College of Medicine and Health Sciences Sultan Qaboos UniversityOman Department of Human & Clinical Anatomy College of Medicine and Health Sciences Sultan Qaboos UniversityP.O. Box 35123 Oman Deportment of Community Health Faculty of Applied Medical Sciences Al-Baha UniversityKingdom of Saudi Arabia

Objective:The antimicrobial activity of the ethanol extract of the Auklandia(Saussurea lappa)root plant was investigated to verify its medicinal use in the treatment of microbial ***:The antimicrobial activity of the ethanol extract was tested against clinical isolates ofsome multidrug-resistant bacteria using the agar well diffusion *** antibioticswere used as positive reference standards to determine the sensitivity of the clinical ***:The extracts showed significant inhibitory activity against clinical isolates of methicillinresistantStaphylococcus aureus,Pseudomonas aeruginosa,Escherichia coli,Klebsiella pneumonia,Extended Spectrum Beta-Lactemase,Acinetobacter *** minimum inhibitory concentration values obtained using the agar dilution test ranged from 2.0μg/μL-12.0μg/μ*** the contrary the water extract showed no activity at all against the tested ***,theresults obtained by examining anti-resistant activity of the plant ethanolic extract showed thatat higher concentration of the plant extract(12μg)all tested bacteria isolates were inhibited with variable inhibition zones similar to those obtained when we applied lower extract concentrationusing the well diffusion ***:The results demonstrated that the crude ethanolicextract of the Auklandia(Saussurea lappa)root plant has a wide spectrum of activity suggestingthat it may be useful in the treatment of infections caused by the above clinical isolates(humanpathogens).

关键词： Auklandia Saussurea lappa Ethanol extract Antimicrobial activity Anti-resistant activity Minimum inhibitory concentration(MIC)

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Seedling-lump integrated non-destructive monitoring for automatic transplanting with Intel RealSense depth camera

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Artificial Intelligence in Agriculture 2019年第3期3卷 18-32页

作者： Tabinda Naz syed Liu Jizhan Zhou Xin Zhao Shengyi Yuan Yan Sami Hassan Ahmed mohamed Imran ali Lakhiar Key Laboratory of Modern Agricultural Equipment and Technology Ministry of EducationJiangsu UniversityJiangsu 212013China

Non-destructive plant growth parameters measurement is an important concern in automatic-seedling ***,several image-basedmonitoring approaches have been proposed and potentially developed for several agricultural *** presented study proposed and developed a RealSense-based machine vision system for the close-shot seedling-lump integrated *** strategy was based on the close-shot depth ***,the point cloud clustering and suitable algorithms were applied to obtain the segmentation of 3D seedling *** addition,the data processing pipeline was developed to assess the differentmorphological parameter of 4 different seedling *** experiments were carried out with 4 different seedling varieties(pepper,tomato,cucumber,and lettuce)and trained under different light conditions(light and dark).Moreover,analysis results showed that therewas not significantly different(p<0.05)found towards light and dark environments due to close-shot near-infrared ***,the results revealed that the stem diameter relationship between RealSense and the manual method was found for R^2=0.68 cucumber,R^2=0.54 tomato,R^2=0.35 pepper,and R^2=0.58 lettuce ***,the seedling height relationship between RealSense and the manual methodwas found higher than R^2=0.99,0.99,0.99,and 0.99 for pepper,tomato,cucumber,and lettuce,*** on the experiment results,it was concluded that the RGB-D integrated monitoring system with the purposed method could be practiced for nursery seedlings most promisingly without high labour requirements in terms of ease of *** system revealed a good sturdiness and relevance for plant growth ***,it has the perspective for future practical value to real-time vision servo operations for transplanting robots.

关键词： Machine vision RealSense SR300 Segmentation Seedlings transplanting

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A facile access for the synthesis of some C-2 substituted imidazopyrazines by utilizing the palladium catalyzed Suzuki cross-coupling reaction under microwave irradiation

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Chinese Chemical Letters 2016年第1期27卷 31-36页

作者： M.Nibin Joy Bhaskaran Savitha Ayyiliyath M.Sajith Yadav D.Bodke Talavara Venkatesh K.K.Abdul Khader M.syed ali Padusha A.Muralidharan Department of P.G studies and Research in Industrial Chemistry Kuvempu University Post Graduate and Research Department of Chemistry Jamal Mohamed College Bharathidasan University Organic Chemistry Division School of Chemical Sciences Kasaragod Govt.College Kannur University

A rapid, efficient, and facile synthesis of an assortment of C-2 substituted imidazopyrazines has been achieved by utilizing the palladium catalyzed Suzuki cross-coupling of 2-bromo-1H-imidazo[4,5-b]pyrazine with various boronic acids under microwave irradiation. The utilization of（A-^（ta）phos）_2PdCl_2 as a catalyst in combination with Cs F as base and DME-H_2O（4：1） as the solvent system at 100℃ procured the diaryls in acceptable to excellent yields. Prominent features of this developed methodology include short reaction times, fewer side products, and exceptional tolerance to a wide variety of functional groups.

关键词： Imidazopyrazine Boronic acid Suzuki coupling Microwave

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