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Effect of auxins on axillary and de novo shoot regeneration from in vitro shoot cultures derived from forced epicormic buds of teak (Tectona grandis L.)

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Forestry Studies in China 2012年第3期14卷 180-186页

作者： akram MUHAMMAD Aftab FAHEEM Department of Botany University of the PunjabLahorePunjab 54590Pakistan

akram MUHAMMAD, Aftab FAHEEM＊Abstract In this presentation, we report on de novo and axillary shoot regeneration and rooting of shoots maintained over a long term, from cultures of Tectona grandis L. Shoot-tips of teak shoots forced from epicormic buds were used as the starting material for axenie shoot-culture establishment. Long term maintenance of such axenic shoot cultures was carried out by regular sub-culturing on MS media supplemented with N6-benzyleadenine （BA, 8.8 μmol·L^-1） and indole-3-butyric acid （IBA, 2 μmol·L ^1） for 24 months. Vigorously growing shoot tips （2-3 cm long） were inoculated on the MS basal medium supplemented with different concentrations （0, 1, 2, 4, 6, 8 or 10 ***-L-~） of either [BA or a-naphthaleneacetic acid （NAA） for rooting. Axillary and de novo shoots were de- veloped from axillary and cut basal ends of shoots, respectively. Shoots growing on auxins were further sub-cultured （every 15 days） and maintained for 45 days. The greatest number of de novo （5.06） as well as axillary shoots （2.85） was observed on the MS medium supplemented with 10 μmol-L^-1 NAA or 8 μmol·L^-1 IBA, respectively, after 45 days. The combinations of both IBA （μmol·L^-1）＋ NAA （μmol·L^-1） were tested at different concentrations （4 ＋ 4, 6 ＋ 6, 8 ＋ 8） supplemented to a half strength MS basal medium with 0.1% activated charcoal for rooting of decapitated and non-decapitated de novo and axillary shoots. Rooting from non-decapitated de novo shoots was highest （93.33%） with a mean number of roots of 4.61 on this medium, supplemented with 6 μmol·L^-1 IBA ＋ 6 gmol.L l NAA, after 36 days of initial culture. Individual auxin, however, was not effective for root induction. Rooted shoots were acclimatized in a green house and after four weeks plantlets were transferred to the field.

关键词： auxins de novo shoots epicormic buds in vitro teak

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Thermoelectric properties of phase separated Ti substituted Zr0.75Hf0.25NiSn0.985Sb0.015 half-Heuslers

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Progress in Natural Science:Materials International 2020年第1期30卷 74-79页

作者： Rizwan akram Yonggao Yan Mozaffar Hussain Xiaoyu She Xinfeng Tang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Department of Physics Air University

Sb is a very effective dopant for ZrNiSn based half-Heusler *** effect of Ti substitution on Zr0.75Hf0.25NiSn0.985Sb0.015half-Heusler(HH) semiconductor alloys has been investigated to explore the structural modifications and composition ***0.25Zr0.75-xNiSn0.985Sb0.015(x=0,0.15,0.30,0.45) alloys were synthesized by induction melting.A set of samples was also annealed for comparative *** samples were then sintered using plasma activated sintering(PAS) *** results confirmed the existence of ZrNiSn type HH *** electron(BSE) images showed phase separations in the *** substitution improved the carrier concentration and electrical conductivity of the ***,thermal conductivity was also significantly reduced due to the enhanced phonon ***,a ZT value of 1.11 at 873 K was obtained for 30% Ti substituted(annealed) sample.

关键词： Half-Heuslers Doping Sintering Thermoelectric Mobility

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Resource Allocation and Optimization in Device-to-Device Communication 5G Networks

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Computers, Materials & Continua 2021年第10期69卷 1201-1214页

作者： Fahad Ahmed Al-Zahrani Imran Khan Mahdi Zareei Asim Zeb Abdul waheed Computer Engineering Department Umm Al-Qura UniversityMecca24381Saudi Arabia Department of Electrical Engineering University of Engineering and Technology PeshawarP.O.B.814Pakistan Tecnologico de Monterrey School of Engineering and SciencesZapopan45201Mexico Department of Computer Science Abbottabad University of Science and TechnologyHavelian22500Pakistan Department of Information Technology Hazara University MansehraMansehra21120Pakistan School of Electrical and Computer Engineering Seoul National UniversitySeoul08826Korea

The next-generation wireless networks are expected to provide higher capacity,system throughput with improved energy *** of the key technologies,to meet the demand for high-rate transmission,is deviceto-device(D2D)communication which allows users who are close to communicating directly instead of transiting through base stations,and D2D communication users to share the cellular user chain under the control of the cellular *** a new generation of cellular network technology,D2D communication technology has the advantages of improving spectrum resource utilization and improving system throughput and has become one of the key technologies that have been widely concerned in the ***,due to the sharing of cellular network resources,D2D communication causes severe interference to existing cellular *** of the most important factors in D2D communication is the spectrum resources utilization and energy consumption which needs considerable attention from research *** address these issues,this paper proposes an efficient algorithm based on the idea of particle swarm *** main idea is to maximize the energy efficiency based on the overall link optimization of D2D user pairs by generating an allocation matrix of spectrum and *** D2D users are enabled to reuse multiple cellular user’s resources by enhancing their total energy efficiency based on the quality of service constraints and the modification of location and speed in particle *** constraint also provides feasibility to solve the original fractional programming *** results indicate that the proposed scheme effectively improved the energy efficiency and spectrum utilization as compared with other competing alternatives.

关键词： 5G networks D2D communication resource allocation

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Synthesis of Nanostructured Mg-Ni Alloy and Its Hydrogen Storage Properties

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Journal of Materials Science & Technology 2012年第5期28卷 401-406页

作者： N.A. Niaz I. Ahmad waheed S. Khan S. Tajammul Hussain Department of Physics COMSATS Institute of Information Technology Islamabad Pakistan Research Centre of Materials Science School of Materials Science and Engineering Beijing Institute of Technology National Centre for Physics Qaid-a-Azam University Islamabad Pakistan

Nanostructured Mg–Ni alloy with the particle size in the range of 40–50 nm was synthesized by the thermal decomposition of bipyridyl complexes of Mg and Ni metals at 773 K for 24 h under dry argon gas ambient. The as-prepared nano-alloy was characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM） and transmission electron microscopy （TEM） for compositional and structural analysis. The alloy exhibited superior hydrogen absorption and desorption behavior with 3.2 wt% absorption within 1 min at 573 K and about 3 wt% desorption within 5–10 min at 573 K. This favorable behavior of Mg–Ni compound for the hydrogen storage is due to the specific nanostructure of the material. The low activation energy values and favorable thermodynamics indicate that the prepared Mg–Ni alloy is an attracting material for hydrogen storage applications.

关键词： Mg-Ni alloy Hydrogen storage Pressure-composition-temperature (P-C-T) measurements Transmission electron microscopy

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Cell Breathing Based Load Balance in Software Defined WLAN

Cell Breathing Based Load Balance in Software Defined WLAN

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作者： Zaid akram 北京邮电大学

学位级别：硕士

Enterprise WLAN system supports a wide range of functionalities and services,such as,support for authentication,access,and accounting(AAA),interference management,mobility management,load balancing and providing quality of service *** unbalancing is a key issue in today's enterprise WLANs because of insufficient knowledge of network devices and *** unaware handoff is also an issue to make network *** Defined Networking(SDN)is considered a new paradigm which has the ability to overcome traditional network's *** decouples data plane and control plane and makes network easy to manage and *** thesis addresses the issue of load unbalancing in enterprise *** are introducing the concept of SDN along with a load balancing technique "Cell Breathing" in enterprise *** breathing is a technique in which access points expand or shrink their coverage area by increasing or decreasing their transmission power *** changing the coverage area of access points,load can be changed dynamically.A SDN based WLAN architecture "Odin" provides a structure to minimize handoff ***,it provides the information of number of clients connected with *** have used this information in our architecture to design cell breathing technique above SDN controller as an application by taking the advantages of Odin and cell breathing technique in single *** is accomplished by using an emulator called "Mininet-WiFi" to make virtual SDN based WLAN test bed for evaluating this ***,a load-imbalance WLAN scenario is ***,the proposed technique is applied to balance the load of this *** yields an increased throughput that is at least twice than that of the traditional *** experimental results show the benefits and feasibility of the proposed technique.

关键词： software defined networking(SDN) wireless local area network(WLAIN) authentication access and accounting(AAA) heterogeneous mobile networks(HMNs) quality of service(QOS) application programmable interface(APIs) and radio access network(RAN)

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Clinical outcomes of moderate to severe COVID-19 patients receiving invasive vs. non-invasive ventilation

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Asian Pacific Journal of Tropical Medicine 2021年第4期14卷 176-182页

作者： Zubia Jamil Samreen Khalid Shahid Mumtaz Abbasi Yasir waheed Jamal Ahmed Department of Medicine Foundation University Medical CollegeFoundation UniversityDHA Phase 1 Islamabad 44000Pakistan Fauji Foundation Hospital Rawalpindi 46000Pakistan Department of Multidisciplinary Lab Foundation University Medical CollegeFoundation UniversityDHA Phase 1 Islamabad 44000Pakistan Department of Pulmonology Fauji Foundation HospitalRawalpindi 46000Pakistan

Objective:To evaluate the in-hospital outcome of moderate to severe COVID-19 patients admitted in High Dependency Unit(HDU)in relation to invasive ***-invasive mode of ***:In this study,the patients required either non-invasive[oxygen≤10 L/min or>10 L/min through mask or nasal prongs,rebreather masks and bilevel positive airway pressure(BiPAP)]or invasive *** analysis of 30-day in hospital mortality in relation to use of different modes of oxygen,Kaplan Meier and log rank analyses were *** the end,independent predictors of survival were determined by Cox regression ***:Invasive ventilation was required by 15.1%patients while 84.9%patients needed non-invasive *** with evidence of thromboembolism,high inflammatory markers and hypoxemia mainly required invasive *** 30-day in hospital mortality was 72.7%for the invasive group and 12.9%for the non-invasive group(1.8%oxygen10 L/min,3.6%rebreather mask and 4.5%BiPAP).The median time from hospital admission to outcome was 7 days for the invasive group and 18 days for the non-invasive group(P<0.05).Age,presence of co-morbidities,number of days requiring oxygen,rebreather,BiPAP and invasive ventilation were independent predictors of ***:Invasive mechanical ventilation is associated with adverse outcomes possibly due to ventilator associated lung ***,protective non-invasive ventilation remains the necessary and safe treatment for severely hypoxic COVID-19 patients.

关键词： COVID-19 SARS-CoV-2 Non-invasive ventilation Respiratory insufficiency Hypoxia Mechanical ventilation

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A New Method to Evaluate Linear Programming Problem in Bipolar Single-Valued Neutrosophic Environment

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Computer Modeling in Engineering & Sciences 2021年第11期129卷 881-906页

作者： Jamil Ahmed Majed G.Alharbi Muhammad akram Shahida Bashir Department of Mathematics University of GujratGujratPakistan Department of Mathematics College of Arts and SciencesMethnabQassim UniversityBuraydahSaudi Arabia Department of Mathematics University of the PunjabNew CampusLahorePakistan

A bipolar single-valued neutrosophic set can deal with the hesitation relevant to the information of any decision making problem in real life scenarios,where bipolar fuzzy sets may fail to handle those hesitation *** this study,we first develop a new method for solving linear programming problems based on bipolar singlevalued neutrosophic ***,we apply the score function to transform bipolar single-valued neutrosophic problems into crisp linear programming ***,we apply the proposed technique to solve fully bipolar single-valued neutrosophic linear programming problems with non-negative triangular bipolar single-valued neutrosophic numbers(TBSvNNs)and non-negative trapezoidal bipolar single-valued neutrosophic numbers(TrBSvNNs).

关键词： Bipolar single-valued neutrosophic numbers score function trapezoidal numbers linear programming

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Hepatitis elimination by 2030: Progress and challenges

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World Journal of Gastroenterology 2018年第44期24卷 4959-4961页

作者： Yasir waheed Masood Siddiq Zubia Jamil Muzammil Hasan Najmi Multidisciplinary Laboratory Foundation University Medical College Foundation University Islamabad Department of Medicine Jinnah Memorial Hospital Department of Medicine Fauji Foundation Hospital Foundation University Medical College Foundation University Islamabad Department of Pharmacology and Therapeutics Foundation University Medical College Foundation University Islamabad

Globally, over 300 million people are living with viral he-patitis with approximately 1.3 million deaths per year. In 2016, World Health Assembly adopted the Global Health Sector Strategy on viral hepatitis to eliminate hepatitis by 2030. Different World Health Organization member countries are working on hepatitis control strategies to achieve hepatitis elimination. So far, only 12 countries are on track to achieve hepatitis elimination targets. The aim of the study was to give an update about the progress and challenges to achieving hepatitis elimination by 2030. According to the latest data, 87% of infants had received the three doses of hepatitis B virus （HBV） vaccination in the frst year of their life and 46% of infants had received a timely birth dose of HBV *** is a strong need to improve blood and injection safety. Rates of hepatitis B and C diagnosis are very low and only 11% of hepatitis B and C cases are diagnosed. There is a dire need to speed up hepatitis diagnosis and find the missing millions of people living with viral hepatitis. Up to 2016, only 3 million hepatitis C cases have been treated. Pricing of hepatitis C virus drugs is also reduced in many countries. The major hurdle to ach-ieve hepatitis elimination is lack of finances to support hepatitis programs. None of the major global donors are committed to invest in the fght against hepatitis. It will be very diffcult for the low and middle-income countries to fund their hepatitis control program. Hepatitis elimination needs strong fnancial and political commitment, support from civil societies, and support from pharmaceutical and medical companies around the globe.

关键词： Hepatitis Global Health Sector Strategy Hepatitis B virus vaccination Injection safety Find

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后路有限切开减压植骨联合经皮椎弓根螺钉内固定治疗胸腰椎C型骨折的疗效

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中华创伤杂志 2024年第4期40卷 343-349页

作者：韩念荣艾克热木·吾斯曼刘岩路莫军王荣胡炜黄异飞新疆医科大学附属中医医院脊柱二科乌鲁木齐830000

目的:比较后路有限切开减压植骨联合经皮椎弓根螺钉与传统后路切开减压植骨联合椎弓根螺钉内固定治疗胸腰椎C型骨折的疗效。方法:采用回顾性队列研究分析2015年1月至2019年12月新疆医科大学附属中医医院收治的60例胸腰椎C型骨折患者的... 详细信息

目的:比较后路有限切开减压植骨联合经皮椎弓根螺钉与传统后路切开减压植骨联合椎弓根螺钉内固定治疗胸腰椎C型骨折的疗效。方法:采用回顾性队列研究分析2015年1月至2019年12月新疆医科大学附属中医医院收治的60例胸腰椎C型骨折患者的临床资料,其中男37例,女23例;年龄25~61岁[(46.5±9.8)岁]。损伤节段:T 10~11 11例,T 11~12 12例,T 12~L 1 19例,L 1~2 9例,L 2~3 9例。美国脊髓损伤协会(ASIA)分级:A级27例,B级21例,C级12例。30例行后路有限切开减压植骨联合经皮椎弓根螺钉内固定(微创手术组),30例行传统后路切开减压植骨联合椎弓根螺钉固定(传统切开组)。比较两组手术时间、术中出血量;术前,术后1周、6个月及末次随访时矢状面Cobb角、伤椎前缘高度、视觉模拟评分(VAS)、Oswestry功能障碍指数(ODI);末次随访时ASIA分级;术中及术后并发症发生率。结果:患者均获随访35~46个月[(39.0±3.4)个月]。微创手术组手术时间为150(120,210)min,术中出血量为145(100,200)ml,短于或少于传统切开组的210(210,240)min、330(300,350)ml( P0.05)。术后1周、6个月微创手术组VAS分别为3.0(2.0,4.0)分、1.0(1.0,2.0)分,低于传统切开组的4.0(4.0,5.0)分、2.0(1.0,2.0)分( P0.05)。术中及术后微创手术组并发症发生率为10.0%(3/30),低于传统切开组的33.3%(10/30)( P<0.05)。结论:与传统后路切开减压植骨联合椎弓根螺钉相比,后路有限切开减压植骨联合经皮椎弓根螺钉内固定治疗胸腰椎C型骨折具有手术时间短、术中出血量少、术后早期疼痛缓解明显和并发症发生率低等优势。

关键词：脊柱骨折胸椎腰椎骨移植骨折固定术内

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Prediction Flashover Voltage on Polluted Porcelain Insulator Using ANN

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Computers, Materials & Continua 2021年第9期68卷 3755-3771页

作者： Ali Salem Rahisham Abd-Rahman waheed Ghanem Samir Al-Gailani Salem Al-Ameri Faculty of Electrical and Electronic Engineering University Tun Hussein Onn MalaysiaJohor86400Malaysia Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia TerengganuKuala Terengganu21030Malaysia School of Electrical and Electronic Engineering Universiti Sains MalaysiaNibong Tebal14300Malaysia Department of Electrical and Electronics Engineering Faculty of EngineeringAl-Madinah International UniversityKuala Lumpur57100Malaysia

This paper aims to assess the effect of dry band location of contaminated porcelain insulators under various flashover voltages due to *** locations of dry bands are proposed to be tested under different severity of contamination artificially produce using salt deposit density(SDD)sprayed on an *** tests of polluted insulators under proposed scenarios have been *** flashover voltage of clean insulators has been identified as a reference value to analyze the effect of contamination distribution and its *** dry band dimension has been taken into consideration in experimental *** flashover voltage has been predicted using an artificial neural network(ANN)technique based on the laboratory test *** ANN approach is constructed with five input data(geometry the insulator and parameters of contamination)and flashover voltage as the output of the *** indicated that the pollution distribution based on the proposed scenario has a significant influence on the flashover voltage *** of the ANN model reveals that the relative error values between the experimental results and the prediction appeared to be within 5%.This indicates the significant efficiency of the ANN technique in predicting the flashover voltage insulator under test.

关键词： Insulator pollution distribution artificial neural network dry band

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