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Synthesis, Structure and Quantum Mechanical Calculations of Methyl 2-(5-((Quinolin-8-yloxy)-methyl)-1,3,4-oxadiazol-2-ylthio)-acetate

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Chinese Journal of Structural Chemistry 2015年第6期34卷 858-870页

作者： AAMER SAEED FOUZIA PERVEEN NAEEM ABBAS SIDRA jamal ULRICH FL?RKE Department of Chemistry Quaid-I-Azam University Research Center for Modeling and Simulations National University of Sciences and Technology H-12 Campus Department Chemie Fakult?t fur Naturwissenschaften Universit?t Paderborn

The title compound was synthesized by the base catalyzed reaction of 5-（（quinolin- 8-yloxy）methyl）-1,3,4-oxadiazole-2（3H）-thione with methyl chloroacetate. The structure was supported by the spectroscopic data and unambiguously confirmed by single-crystal X-ray diffraction studies. It crystallizes from a methanol solution in the triclinic space group Pi with unit cell dimensions a = 7.4509（9）, b = 10.2389（12）, c = 12.2299（15）A, a = 74.771（2）, β = 77.956（2）, 7 = 69.263（2）°, V = 834.98（17） A3 and Z = 2. In order to gain some valuable insights into the molecular structure, the quantum mechanical calculations were performed using both HF and time-dependent density functional theory at the B3LYP/6-31G（d,p） level. The molecular geometry from X-ray determination of the title compound in the ground state has been compared using the Hartree-Fock （HF） and density functional theory （DFT） with the 6-31G（d） basis set. The calculated results show that the DFT and HF can well reproduce the structure of the title compound. The energetic behavior of the title compound was examined using the B3LYP method with the 6-31G（d） basis set. The harmonic vibrational frequencies calculated have been compared with the experimental FTIR and FT-Raman spectra. The restricted Hartree-Fock and density functional theory-based nuclear magnetic resonance （NMR） calculation procedure was also performed, and it was used for assigning the 13C and 1H NMR chemical shifts of the title compound. Moreover, molecular electrostatic potential and thermodynamic parameters of the title compound were investigated by theoretical calculations.

关键词： methyl 2-(5-((quinolin-8-yloxy)methyl)-1,3,4-oxadiazol-2-ylthio)acetate crystalstructure conformer quantum chemical calculations vibrational studies

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The Ecdysone and Notch Pathways Synergistically Regulate Cut at the Dorsal-Ventral Boundary in Drosophila Wing Discs

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Journal of Genetics and Genomics 2016年第4期43卷 179-186页

作者： Dongyu Jia jamal Bryant Allison Jevitt Gabriel Calvin Wu-Min Deng Department of Biological Science Florida State University

Metazoan development requires coordination of signaling pathways to regulate patterns of gene *** Drosophila,the wing imaginal disc provides an excellent model for the study of how signaling pathways interact to regulate pattern *** determination of the dorsal-ventral（DV） boundary of the wing disc depends on the Notch pathway,which is activated along the DV boundary and induces the expression of the homeobox transcription factor,***,we show that Broad（Br）,a zinc-finger transcription factor,is also involved in regulating Cut expression in the DV boundary ***,Br expression is not regulated by Notch signaling in wing discs,while ecdysone signaling is the upstream signal that induces Br for Cut ***,we find that the ecdysone-Br cascade upregulates cut-lacZ expression,a reporter containing a 2.7 kb cut enhancer region,implying that ecdysone signaling,similar to Notch,regulates cut at the transcriptional ***,our findings reveal that the Notch and ecdysone signaling pathways synergistically regulate Cut expression for proper DV boundary formation in the wing ***,we show br promotes Delta,a Notch ligand,near the DV boundary to suppress aberrant high Notch activity,indicating further interaction between the two pathways for DV patterning of the wing disc.

关键词： Ecdysone Notch Broad Cut Drosophila Wing disc Dorsal-ventral boundary

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COMMON FIXED POINT THEOREMS FOR THREE MAPS IN DISCONTINUOUS G_b-METRIC SPACES

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Acta Mathematica Scientia 2014年第5期34卷 1643-1654页

作者： jamal Rezaei ROSHAN Nabiollah SHOBKOLAEI Shaban SEDGHI Vahid PARVANEH Stojan RADENOVI Department of Mathematics Qaemshahr Branch Islamic Azad University Department of Mathematics Babol Branch Islamic Azad University Department of Mathematics Gilan-E-Gharb Branch Islamic Azad University Faculty of Mechanical Engineering University of Belgrade Kraljice Marije 16 11 120 Beograd Serbia

In [Aghajani A, Abbas M, Roshan JR. Common fixed point of generalized weak contractive mappings in partially ordered Gb-metric spaces. Filomat, 2013, in press], using the concepts of G-metric and b-metric Aghajani et al. defined a new type of metric which is called generalized b-metric or Gb-metric. In this paper, we prove a common fixed point theorem for three mappings in Gb-metric space which is not continuous. An example is presented to verify the effectiveness and applicability of our main result.

关键词： common fixed point b-metric space G-metric space

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Optimizing the Indoor Localization Using Channel State Information

Optimizing the Indoor Localization Using Channel State Infor...

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作者： AHSAN jamal AKBAR 上海交通大学

学位级别：硕士

随着室内环境中无线系统的惊人发展和无线技术的广泛部署,许多基于位置的室内服务(LBS)已经渗透到当代生活的方方面面。在室内环境中,使用无线设备定位目标是最重要的功能之一。在各种室内定位应用中,室内定位技术主要分为两大类:基于... 详细信息

随着室内环境中无线系统的惊人发展和无线技术的广泛部署,许多基于位置的室内服务(LBS)已经渗透到当代生活的方方面面。在室内环境中,使用无线设备定位目标是最重要的功能之一。在各种室内定位应用中,室内定位技术主要分为两大类:基于设备的定位服务(Device Based,DB)和无设备的定位服务(Device Free,DF)。基于设备的定位应用需要待定位对象携带特定的硬件设备,进而完成定位。,无设备的定位应用则不需要待定位对象携带任何额外的设备。由于Wi-Fi在无线网络基础设施中占据主导地位,基于Wi-Fi的室内定位应用已经成为一种广泛应用的室内定位技术。大多数基于Wi-Fi的室内定位系统利用接收信号强度(Received Signal Strength Indicator,RSSI)实现室内定位。但是,RSSI只是一种粒度较粗的测量值,而且RSSI会随着时间变化,具有一定的时间波动性。不同于RSSI,物理层的功率特性和信道响应可以区分无线信号多径分量的特性,因此利用物理层信息更可能实现精度高和稳定性好的定位系统。因此,很多室内定位的研究将研究重点转向了信道状态信息(Channel State Information,CSI),并且一些基于CSI的开创性的工作已经取得了亚米级别甚至分米级别的定位精度。本文利用CSI在复杂的室内环境下实现高精度的室内定位,通过校准物理层的CSI信息来消除由信道或者硬件的信号衰减引起的信号误差,然后提出了一种独特的MUSIC算法用来估计到达角(Angle Of Arrival,AOA)和信号传输时间(Signal Time Of Flight,STOF)。室内环境复杂多变,无线信号在室内环境下会产生多径效应,使用多重信号分类(Multiple Signal Classification,MUSIC)算法可以估算得到多个不同传播路径的到达角和信号传输时间。本文结合k均值聚类算法从信号的多径分量中识别直接路径,首先将估算得到的AOA和STOF作为二维坐标,然后对坐标点进行聚类,聚类完成之后,通过分析衡量直接路径的多个因素,定义了一个可以衡量直接路径可能性的函数,将可能性最大的聚类当作直接路径。本文提出了基于MUSIC算法和优化到达角的室内定位系统(Target Discovery Using MUSIC,TDUM),该系统使用商用Wi-Fi接入点实现了分米级别的室内定位。在典型的室内环境下使用商用的无线网卡进行了大量实验,实验结果还表明本文提出的算法在估算AOA和识别直接路径方面具有较好的性能,另外本文提出的室内定位系统在稳定性和定位精度上可与现有的高精度定位系统相媲。

关键词：目标定位接收信号强度信道状态信息接入点到达角信号传输时间

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Sand production control mechanisms during oil well production and construction

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Petroleum Research 2021年第4期6卷 361-367页

作者： Arman Salahi Ali Naghi Dehghan Seyed jamal Sheikhzakariaee Afshin Davarpanah Department of Petroleum and Chemical Engineering Science and Research BranchIslamic Azad UniversityTehranIran Department of Mining Engineering Science and Research BranchIslamic Azad UniversityTehranIran Department of Geology Faculty of SciencesIslamic Azad UniversityScience and Research BranchTehranIran Department of Mathematics Aberystwyth UniversityAberystwythSY233BZUK

Sand production is considered as one of the significant production issues that significantly reduce wellbore *** process of sand or solids production in production operations is one of the crucial operational inefficiencies that can lead to wells ***,the drilling mud might erupt through the ***,it is essential to properly determine what types of solids or sand are produced to correctly predict efficient sand control *** paper aimed to compare different sand production control mechanisms and how to control or minimize sand ***,we consider injection pressure and sand moisture on the sand production *** to this study’s findings,pressure injection and moisture increase had caused sand production increase,which should be considered in operational ***,chemical injection such as resin and hydrogel injection usually has efficient sand production control *** expandable sand screen is an expandable three-layer component that is driven into the well and expanded.

关键词： Sand production Expandable sand screen Chemical agents Injection pressure Moisture

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Synergistic enhancement of photocatalytic and antimicrobial efficacy of nitrogen and erbium co-doped ZnO nanoparticles

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Journal of Rare Earths 2024年第5期42卷 859-868,I0002页

作者： Sudipta Mondal Moniruzzaman jamal Sikder Ashikuzzaman Ayon Md Jannatul Ferdous Anik Md Muktadir Billah Department of Materials and Metallurgical Engineering Bangladesh University of Engineering and TechnologyDhaka1000Bangladesh School of Materials Engineering Purdue UniversityWest LafayetteIN47907USA Department of Materials Science and Engineering University of CaliforniaBerkeleyCA94720USA Department of Materials Science and Engineering Northwestern UniversityEvanstonI28USA

Using the chemical co-precipitation approach,a series of nitrogen(N) and erbium(Er) co-doped ZnO nanoparticles(NPs) was effectively synthesized to enhance the photocatalytic and antibacterial *** characterization techniques,including X-ray diffraction(XRD),X-ray photoelectron spectro scopy(XPS),scanning electron microscopy(SEM),UV-vis,and photoluminescence(PL) spectroscopy,were carried out to validate the evaluated photocatalytic and antibacterial *** analysis confirms the pure wurtzite ZnO phase without the presence of any secondary *** analysis confirms the succe ssful incorporation of nitrogen and erbium into the ZnO *** optical bandgap of ZnO calculated from UV-vis spectroscopy shows a redshift after Er-N co-doping,with the lowest bandgap of 3.215 eV calculated for Zn_(0.97)Er_(0.03)N_(0.01)O_(0.99) *** images demonstrate the formation of nanorods after N-Er co-doping,followed by gradually increase d rod diameter and length after N-Er ***,the photocatalytic activities of ZnO samples we re measured by their ability to facilitate the photodegradation of Rhodamine B under UV *** with 1 mol% N doping exhibits 88% photodegradation of RhB under UV light within 360 min,and the photodegradation and antibacterial activity are greatly improved with Er *** fact,3 mol% Er-1 mol% N doped ZnO NPs demonstrate the highest photocatalytic activity,with approximately 96% degradation after 360 min,as well as superior antibacterial activity against Staphylococcus aureus(Gram-positive bacteria) and Pseudomonas aeruginosa(Gram-negative bacteria) with the highest zone of inhibition(ZOI) of 16 nm,due to nanorod formation,increased reactive oxygen species(ROS),and decreased electron-hole recombination,as validated by SEM,XPS,and PL spectroscopy.

关键词： Chemical co-precipitation Co-doping Bandgap Photocatalysis Rare earths Antimicrobial

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Comparative study of semiconductor power losses between CSI-based STATCOM and VSI-based STATCOM,both used for unbalance compensation

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Protection and Control of Modern Power Systems 2020年第1期5卷 56-69页

作者： Anas Benslimane jamal Bouchnaif Mohammed Essoufi Bekkay Hajji Loukmane el Idrissi Laboratory Renewable energy embedded system and information processingNational School of Applied SciencesUniversity of Mohammed IOujdaMorocco Laboratory of Electrical Engineering and Maintenance Higher School of TechnologyUniversity of Mohammed IOujdaMorocco

In this paper,we present a detailed procedure to determine the semiconductor losses for both structures of a shunt STATCOM(Static Compensator),STATCOM based on Current Source Inverter(CSI)and STATCOM based on Voltage Source Inverter(VSI),both used for voltage unbalance *** a first step,we study the VSI-based STATCOM and the CSI-based STATCOM used in high speed railway *** we analyze the design and the sizing of the unbalance compensator in order to obtain an unbalance factor that does not exceed the limits imposed by the standards or by the energy *** that,we compare the performances obtained with both structures VSI-STATCOM and CSI-STATCOM,after calculating the semiconductor power losses in the STATCOM ***,we validate our approach by simulation over real data of unbalance compensation caused by the new high-speed railway in *** use the tools MATLAB/Simulink/Simpowersys for performing our simulations.

关键词： Power losses VSI CSI STATCOM Unbalance compensation Railway

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Deep Learning-Based Approach for Arabic Visual Speech Recognition

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Computers, Materials & Continua 2022年第4期71卷 85-108页

作者： Nadia H.Alsulami Amani T.jamal Lamiaa A.Elrefaei Computer Science Department Faculty of Computing and Information TechnologyKing Abdulaziz UniversityJeddah21589Saudi Arabia Electrical Engineering Department Faculty of Engineering at ShoubraBenha UniversityCairo11629Egypt

Lip-reading technologies are rapidly progressing following the breakthrough of deep *** plays a vital role in its many applications,such as:human-machine communication practices or security *** this paper,we propose to develop an effective lip-reading recognition model for Arabic visual speech recognition by implementing deep learning *** Arabic visual datasets that have been collected contains 2400 records of Arabic digits and 960 records of Arabic phrases from 24 native *** primary purpose is to provide a high-performance model in terms of enhancing the preprocessing ***,we extract keyframes from our ***,we produce a Concatenated Frame Images(CFIs)that represent the utterance sequence in one single ***,the VGG-19 is employed for visual features extraction in our proposed *** have examined different keyframes:10,15,and 20 for comparing two types of approaches in the proposed model:(1)the VGG-19 base model and(2)VGG-19 base model with batch *** results show that the second approach achieves greater accuracy:94%for digit recognition,97%for phrase recognition,and 93%for digits and phrases recognition in the test ***,our proposed model is superior to models based on CFIs input.

关键词： Convolutional neural network deep learning lip reading transfer learning visual speech recognition

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Comparative assessment of natural and synthetic reproductive inhibitors in Oreochromis niloticus

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International Journal of Agricultural and Biological Engineering 2024年第5期17卷 284-292页

作者： Rafia jamal Farkhanda Asad Shabana Naz Syed Makhdoom Hussain Department of Zoology Government College University FaisalabadFaisalabadPunjabPakistan

Nowadays, natural sources of sex reversal agents are preferred over synthetic ones in fish farming due to their reliability and economic value. This study compared the effectiveness of 17α-methyltestosterone (MT), Carica papaya seed meal (PSM), and common carp testes (CCT) with tilapia (Oreochromis niloticus) in terms of sex reversal, hematological parameters, gonadal histology, enzymatic activity, and overall growth. A 90-day trial was conducted with 560 tilapia fry (2- 3 days old) distributed into one control and six treatment aquaria, each with two replicates. Fries were fed with a control diet (T0) or one of six experimental diets (T1-T6) containing different MT, PSM, or CCT levels for 30 days, followed by the control diet for 60 days. MT induced the highest male proportion (85% and 75% in T2 and T1, respectively), while PSM and CCT enhanced tilapia’s growth and carcass composition. Histological analysis revealed gonadal deformities in MT and PSM treatments, which might lead to sterility. The gonadosomatic index (GSI) was reduced in natural treatments as compared with synthetic ones. Hematological parameters did not show any adverse effects of PSM and CCT. Protease and amylase activities were higher in PSM and CCT than in MT, indicating better digestion and feed absorption. PSM and CCT are biodegradable, locally available, and eco-friendly alternatives to synthetic hormones to change sex in tilapia. Natural sources (plant and animal by-products) are preferable to synthetic sources as they are less expensive and control prolific breeding in tilapia.

关键词： sex reversal natural reproductive inhibitors synthetic reproductive inhibitors Oreochromis niloticus Carica papaya

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Power System Stability using Virtual Synchronous Generator for Loading Management

Power System Stability using Virtual Synchronous Generator f...

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作者： Muhammad Zeeshan jamal 华南理工大学

学位级别：硕士

The inertial response plays a vital role in electrical networks to reduce the rate of change of frequency（Ro Co F）following a contingency *** the inertia has a low or zero value due to a lack of synchronous generators,then the electrical network might experience large undesirable frequency *** overcome this problem,in previous research,mathematical methods have been emerged to enhance the system stability in current source based *** battery energy storage system embodies the isolated microgrid operates as voltage source and the implementation of the demand side management in which frequency is used as a communication *** requirement for inertia frequency response is *** this work,the power electronics methods to emulate virtual inertia have been found,developed and *** this research,an overview of existing methods has been presented,which includes the introduction of the principles and comparison between their advantages and *** on those techniques,an additional PID controller has been proposed for the isolated microgrids working as current ***,three control schemes to incite inertial responses have been proposed for the microgrids in voltage source type as follows: 1)swing equation method,2)low pass filter,and 3)an adjustable rate *** studies to test and compare the proposed methods have been ***,the corresponding dynamic models of investigated microgrids are created by Simulink graphical *** models allow the study of the voltage source based islanded network in similar conditions as the current source based system,and facilitates their ***,the project includes the comparison between the system behaviors with and without additional inertia control loops in islanded networks with and without rotating mass synchronous generators,*** different responses in the two source types also have been *** dominates the

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