检索结果-南通市图书馆

作者： hasnain ali Salman 中南大学

学位级别：硕士

Keyword search methods alleviate the problem by retrieving documents that contain words specified by users. The retrieved documents are likely to contain relevant information because of the presence of words of interest. However, keyword search suffers from a number of issues. Ambiguous keywords, which have more than one possible meaning, often result in the retrieval of irrelevant documents. Alternatively, relevant documents may contain terms different from, but similar in meaning to, specified keywords. These documents will be missed in the retrieval process, in recent years ontologies have become a topic of interest in computer science Web documents are classified based on similarities determined by the ontology, which expresses the meaning structure of the Web documents’terminology information and vocabulary in a hierarchical manner. Identifying and comparing the meaning content and relationship of each document can perform document classification more accurately and efficiently The principal application area for ontologies in computer science today is in the application of semantic technology to number of application areas this semantic technology has been developed as part of the W3C semantic web. The world of semantic web is progressing slowly but constantly. Ontologies, needs to be focused and new techniques are required to be developed relating to it. As a result the alignments produced are not as close or not as good as they should be. Traditional techniques use multiple strategies and combine the results by assigning fixed weights to each strategy, while in actual the ontologies are semantic in nature so the weights should also be assigned according to their semantics. We propose the concept of conditional information quantity which modifies formulas for computing similarity and set the weights according to the semantic contexts of strategies. To achieve an understanding of requirements for ontology-based services, high-level needs of different users g

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Giardiasis in patients with dyspeptic symptoms

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World Journal of Gastroenterology 2005年第42期11卷 6667-6670页

作者： Javed Yakoob Wasim Jafri Shahab Abid Nadim Jafri Saeed Hamid hasnain ali Shah Lubna Rizvi Muhammad Islam Hizbullah Shaikh Section of Gastroenterology Department of Medicine Aga Khan University Hospital Karachi 74800 Sindh Pakistan Department of Pathology Aga Khan University Hospital Karachi 74800 Sindh Pakistan

AIM： To investigate the prevalence of giardiasis in patients with dyspeptic symptoms. METHODS＂ Clinical records of consecutive patients who attended Gastroenterology Department at Aga Khan University Hospital from January 2000 to June 2003 and had esophagogastroduodenoscopy （EGD） with duodenal biopsies and international classification of diseases 9th revision with clinical modifications （ICD-9-CM） coded with giardiasis were studied. RESULTS： Two hundred and twenty patients fulfilled the above criteria. There were 44% （96/220） patients who were giardiasis positive, 72% （69/96） of them were males and 28% （27196） of them were females. There were 65% （81/124） males and 35% （43/124） females who were giardiasis negative. The mean age of patients with giardiasis was 28±17 years, while that of giardiasis negative patients was 40±18 years （P〈0.001）. In patients with giardiasis, abdominal pain was present in 71% （68/96） of patients （P = 0.02） and diarrhea in 29% （28/96）（P = 0.005）; duodenitis in 25% （24/96） on EGD （P = 0.006） and in 68% （65/96） on histopathology （P = 0.002）. CONCLUSION： Giardiasis occurs significantly in young people with abdominal pain, while endoscopic duodenitis is seen in only 25% of giardiasis positive cases, which supports routine duodenal biopsy.

关键词： Abdominal pain Giardiasis Stool examination EGD Duodenal biopsy

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四川省草地贪夜蛾抗药性检测及其抗性机制、生活史特征及转录组分析

四川省草地贪夜蛾抗药性检测及其抗性机制、生活史特征及转录组分...

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作者： ali hasnain 四川农业大学

学位级别：硕士

草地贪夜蛾Spodoptera frugiperda(Noctuidae:鳞翅目)是一种来自北美热带地区的迁飞性害虫,其寄主超过350余种,包括棉花,小麦,甘蔗,水稻和牧场草等。自2019侵入中国以来,给我国玉米产业造成巨大经济损失。四川是我国重要的玉米种植区,自... 详细信息

草地贪夜蛾Spodoptera frugiperda(Noctuidae:鳞翅目)是一种来自北美热带地区的迁飞性害虫,其寄主超过350余种,包括棉花,小麦,甘蔗,水稻和牧场草等。自2019侵入中国以来,给我国玉米产业造成巨大经济损失。四川是我国重要的玉米种植区,自2019年草地贪夜蛾从云南迁入四川后,已在四川多地发生,并可在攀西地区越冬,对四川省玉米生产带来严重危害。因此,本研究通过测定不同地区草地贪夜蛾种群的抗药性水平、构建敏/抗氯虫苯甲酰胺品系、转录组分析及差异基因q RT-PCR验证等,以期为科学用药防控四川地区草地贪夜蛾提供理论。主要研究结果如下:(1)采用点滴法建立了6条相对敏感基线,并测定了六种不同杀虫剂对7个田间种群的相对抗性水平。结果表明,所有的田间种群对阿维菌素苯甲酸酯、毒死蜱、溴氰菊酯、茚虫威、双三氟虫脲的相对敏感阶段,其相对抗性倍数(RR)分别为2.49～3.23、1.02～1.40、1.05～1.54、1.22～1.77和1.03～1.28倍;除QJ-20种群对氯虫苯甲酰胺表现为低水平抗性之外(RR为5.13倍),其余田间种群对氯虫苯甲酰胺均表现为相对敏感(其RR值为1.70～2.18)。(2)采用三种增效剂(磷酸三苯酯、马来酸二乙酯和胡椒酰丁氧化物)测定了其对氯虫苯甲酰胺的增效作用,并测定其酶活性,结果表明,PBO对氯虫苯甲酰胺毒力的增效比为1.45倍,对明细胞色素P450酶活性的抑制增效比为2.33倍,这表明P450s是草地贪夜蛾对氯虫苯甲酰胺代谢抗性的主要解毒代谢酶。进一步采用q RT-PCR检测了氯虫苯甲酰胺靶基因RYR和26个CYP450基因在抗性品系QJ-20种群中的表达,结果表明,RYR、CYP6AE43、CYP321A8、CYP305A1、CYP49A1和CYP306A1在QJ-20中显示过表达。5.5-,2.4-,0.9-,3.3-,3.9-,和2倍。进一步测定了差异表达基因在田间群体中的表达,结果表明,RYR相对表达水平在所有群体中表达最为显著,上调表达倍数分别达到1.93至5.5倍。因此,RYR和细胞色素P450的过表达可能与草地贪夜蛾对氯虫苯甲酰胺抗性相关。(3)通过双向筛选法,通过QJ-20构建草地贪夜蛾氯虫苯甲酰胺抗/感品系,它们分别被标记为氯虫苯甲酰胺敏感品系(Crp-SUS)和氯虫苯甲酰胺抗性品系(Crp-RES),相对敏感基线,Crp-SUS的RR达到了0.42倍,而Crp–RES的RR达到了1.98倍。两性生命表研究表明,Crp-SUS的发育时间显著长于Crp-RES,并且Crp-SUS品系的雄成虫和雌成虫的平均寿命、成虫产卵前期(APOP)、总产卵前期(TPOP)显著长于Crp-RES品系,但是Crp-SUS品系的内禀增长率(r)、周限增长率(λ)和净增值率(R)等生命参数值显著低于Crp-RES品系,而Crp-SUS菌株的平均世代时间(T)显著长于Crp-RES品系。Crp-SUS的年龄-阶段特征存活率(s)和年龄-阶段特征寿命期望值(e)比Crp-RES菌株长,但Crp-SUS的年龄-阶段特征生殖能力(v)比Crp-RES短。(4)两个品系的转录组分析表明,在KEGG途径和GO富集中,代谢途径和催化活性对抗性发展有显著贡献。还发现在两个品系(Crp-SUS)和(Crp-RES)中有1582个显著下调的差异表达基因(DEGs),而1402个基因显著上调。进一步通过qRT-PCR验证12个DEGs,包括11个P450基因和RYR,在Crp-RES品系中表达量相对Crp-SUS上调的DEGs包括CYP6AE44,GST4E1,CYP4C1,CYP340L1,CYP302A1,CYP6B2,CYP4G74,CYP4G15和CYP6AE43,上调倍数分别为2.37-,3.02-,3.88-,2.99-,2.94-,3.09-,3.82-,4.05-和3.61-倍;在Crp-RES品系中,RYR、CYP6B1、CYP49A1和CYP6B6分别下调0.52-、0.22-、0.40-和0.39-倍。所有结果表明,草地贪夜蛾对几种防控杀虫剂均处于敏感至中抗水平,而其对氯虫苯甲酰胺的抗性主要与靶基因RYR和P450基因的过表达有关,以上研究结果有助于制定草地贪夜蛾区域性有害生物策略(IPM)的制定,为化学农药的减量控害,减施增效提供理论基础。

关键词： Spodoptera frugiperda chlorantraniliprole 细胞色素P450 qRT-PCR 抗性机制转录组学分析生活史特征

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Measuring Porosity of Anodes in Solid Oxide Fuel Cell (SOFC) through Water Archimedeans Porosimetry

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Journal of Power and Energy Engineering 2015年第6期3卷 46-53页

作者： Syed Mubashar Hassan Syed ali hasnain School of Engineering and Built Environment Edinburgh Napier University Edinburgh UK Centre of Excellence in Sustainable Building Design School of Energy Geosciences Infrastructure & Society Heriot-Watt University Edinburgh UK

The present research is aimed to measure the porosity of anodes in solid oxide fuel cell through water Archimedeans method. There are various alternatives available to replace fossil fuel cells like nuclear power, wind energy, solar energy, bio fuel, and geothermal and fuel cells. Among all the alternatives of fossil fuel, one form of energy production that stands out from the rest and promises a sustainable future energy is fuel cell. Moreover, it offers many advantages in contrast to other forms of energy generation. An Archimedean approach for water immersion porosimetry is carried out. Some of the results are beyond rational limits, and given negative and sometime above 100 percent porosity. The reasons for these unacceptable results are either due to water ingress into the sample or the sample turns into buoyant due to air in the cling film. The results from Archimedean porosimetry should only be used qualitatively due to errors associated with the results. It is also noted that Archimedean porosimetry is not the ideal technique for measuring the porosity of coated samples. It is suggested that larger samples should be analyzed that will help to minimize the weighing errors.

关键词： Solid Oxide Fuel Cell Porosity Anodes Archimedeans

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Sustainable Development in the Context of Major Infrastructure Projects in United Kingdom

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Journal of Geoscience and Environment Protection 2015年第4期3卷 44-55页

作者： Ebikapade Amasuomo Syed ali hasnain Ayodeji Yemi Osanyinlusi School of Engineering and Built Environment (SEBE) Glasgow Caledonian University Glasgow UK Centre of Excellence in Sustainable Building Design School of Energy Geosciences Infrastructure & Society Heriot-Watt University Edinburgh UK School of Contemporary Sciences University of Abertay Dundee Dundee UK

The present paper is aimed at reviewing sustainable development and sustainability approach for infrastructure projects in the United Kingdom. It is imperative that major infrastructure projects (MIPs) adhere to the principles of sustainable development in order to promote sustainability. This requires identifying sustainable strategies that are capable of serving as a guide to inculcating sustainability into major infrastructural projects. The current paper examines ways of inculcating sustainability into infrastructure projects bearing in mind that construction, maintenance and the way we use facilities have significant impacts on the environment. In addition to the fact that, decision making tools on methods of inculcating sustainability into infrastructure project appear too complex to stakeholders;and in most cases they do not provide stakeholders the necessary information required to make a good judgement. Hence, the present paper relies on desk study to gather existing data on infrastructure project and sustainable development. Existing data are obtained from books, scholarly articles and the WebPages of municipal authorities in the UK. Amongst other findings, the paper reveals that the utilization of environmental impact statements and environmental assessment documents at the formative stage of projects will aid the assessment of the level of sustainability to be achieved in any infrastructure development.

关键词： Sustainability Infrastructure Projects Sustainable Development

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Partial Splenic Artery Embolization in Cirrhosis Is a Safe and Useful Procedure

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Open Journal of Gastroenterology 2018年第9期8卷 327-336页

作者： Fakhar ali Qazi Arisar Syed hasnain ali Shah Tanveer Ul Haq Section of Gastroenterology Department of Medicine The Aga Khan University Hospital Karachi Pakistan Section of Interventional Radiology Department of Radiology The Aga Khan University Hospital Karachi Pakistan

Background: Portal Hypertension is a common complication of cirrhosis. It leads to splenomegaly which manifests with features of hypersplenism. This results in leucopenia which increases the likelihood of sepsis and prevents treatment with interferon. Thrombocytopenia increases the risk of bleeding including variceal bleeds which make the anemia worse. This study was done to determine the usefulness and safety of partial splenic artery embolization (PSAE) in portal hypertension due to cirrhosis. Methods: Patients with PSAE were identified by using International Classification of Diseases (ICD)-10 coding from medical records and their charts were reviewed retrospectively. 25 patients underwent splenic artery embolization at The Aga Khan University Hospital Karachi from November 2000 to December 2016. 18 patients who underwent PSAE for disabling hypersplenism caused by cirrhosis were included. Patients who were under 18 year of age, or in whom PSAE were performed for reasons other than cirrhosis and those with missing records/incomplete data were excluded (n = 7). Information was collected regarding demographic details, procedure indications, nature, technique, clinical efficacy, repeat embolization and complications along with laboratory and radiological investigations. Results: Eighteen patients of cirrhosis with a mean age of 43.47 ± 10.926 years, of which 14 were males, underwent PSAE (19 procedures). Indications were severe hypersplenism which precluded treatment with interferon and ribavirin (n = 8) and recurrent Gastro-oesophageal variceal (GOV) bleeds due to advanced Child-Pugh grade and thrombocytopenia (n = 10). Hematological parameters improved significantly following PSAE. Three out of eight patients successfully completed interferon + ribavirin treatment for hepatitis C (HCV) infection post PSAE, and GOV bleeds stopped in eight out of 10 patients. Complications included mild Left upper quadrant (LUQ) abdominal pain n = 9 (47.3%), post-embolization syndrom

关键词： Partial Splenic Artery Embolization Chronic Liver Disease Cirrhosis Hyper-splenism Safety Outcome

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Ensemble Learning Models for Classification and Selection of Web Services: A Review

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Computer Systems Science & Engineering 2022年第1期40卷 327-339页

作者： Muhammad hasnain Imran Ghani Seung Ryul Jeong Aitizaz ali Monash University Petaling Jaya46150Malaysia Indiana University of Pennsylvania IndianaPA 15705USA Kookmin University Seoul02707Korea

This paper presents a review of the ensemble learning models proposed for web services classification,selection,and *** service is an evo-lutionary research area,and ensemble learning has become a hot spot to assess web services’earlier mentioned *** proposed research aims to review the state of art approaches performed on the interesting web services *** literature on the research topic is examined using the preferred reporting items for systematic reviews and meta-analyses(PRISMA)as a research *** study reveals an increasing trend of using ensemble learning in the chosen papers within the last ten ***ïve Bayes(NB),Support Vector Machine’(SVM),and other classifiers were identified as widely explored in selected *** analysis of web services classification suggests that web services’performance aspects can be investigated in future *** paper also identified performance measuring metrics,including accuracy,precision,recall,and f-measure,widely used in the literature.

关键词： Web services composition quality improvement class imbalance machine learning

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FAIR Principles:Interpretations and Implementation Considerations

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Data Intelligence 2020年第1期2卷 10-29,293-302,322页

作者： Annika Jacobsen Ricardo de Miranda Azevedo Nick Juty Dominique Batista Simon Coles Ronald Cornet Melanie Courtot Merce Crosas Michel Dumontier Chris T.Evelo Carole Goble Giancarlo Guizzardi Karsten Kryger Hansen ali hasnain Kristina Hettne Jaap Heringa Rob W.W.Hooft Melanie Imming Keith G.Jeffery Rajaram Kaliyaperumal Martijn GKersloot Christine R.Kirkpatrick Tobias Kuhn Ignasi Labastida Barbara Magagna PeterMcQuilton Natalie Meyers Annalisa Montesanti Mirjam van Reisen Philippe Rocca-Serra Robert Pergl Susanna-Assunta Sansone Luiz Olavo Bonino da Silva Santos Juliane Schneider George Strawn Mark Thompson Andra Waagmeester Tobias Weigel Mark D.Wilkinson Egon L.Willighagen Peter Wittenburg Marco Roos Barend Mons Erik Schultes Leiden University Medical Center Leiden2333 ZAThe Netherlands Institute of Data Science Maastricht UniversityUniversiteitssingel 60Maastricht 6229 ERThe Netherlands Department of Computer Science The University of ManchesterOxford RoadManchester M139PLUK Oxford e-Research Centre Department of Engineering SciencesUniversity of OxfordOxford OX13PJUK School of Chemistry Faculty of Engineering and Physical SciencesUniversity of SouthamptonSO171BJUK Amsterdam UMC University of AmsterdamAmsterdam 1000 GGThe Netherlands European Bioinformatics Institute(EMBL-EBI) HinxtonCambridgeCB101SDUK Harvard University CambridgeMassachusetts 02138USA Department of Bioinformatics–BiGCaT NUTRIMMaastricht UniversityMaastricht 6229 ERThe Netherlands Conceptual and Cognitive Modeling Research Group(CORE) Free University of Bozen-BolzanoBolzano 39100Italy Aalborg University Aalborg DK-9220Denmark Insight Centre for Data Analytics National University of Ireland GalwayH91 TK33Ireland Centre for Digital Scholarship Leiden University LibrariesLeiden2333 ZAThe Netherlands Department of Computer Science Vrije Universiteit AmsterdamDe Boelelaan 11051081 HV AmsterdamThe Netherlands Dutch Techcentre for Life Sciences(DTL) UtrechtThe Netherlands SURF Utrecht 3511 EPThe Netherlands Keith G Jeffery Consultants FaringdonUK Castor EDC Paasheuvelweg 25Wing 5D1105 BPAmsterdamThe Netherlands San Diego Supercomputer Center University of California San DiegoLa JollaCalifornia 92093USA Learning and Research Resources Centre(CRAI) Universitat de Barcelona08007 BarcelonaSpain Environment Agency Austria A-1090 ViennaAustria University of Notre Dame 75004 ParisFrance Health Research Board(HRB) Dublin 2DO2 H638Ireland Liacs Institute of Advanced Computer Science Leiden University2311 GJ LeidenThe Netherlands Czech Technical University in Prague Faculty of Information Technology(FIT CTU)16000 Prague 6Czech Republic GO FAIR International Support&Coordination Office(GFISCO) LeidenThe Netherlands Harvard Catalys

The FAIR principles have been widely cited,endorsed and adopted by a broad range of stakeholders since their publication in *** intention,the 15 FAIR guiding principles do not dictate specific technological implementations,but provide guidance for improving Findability,Accessibility,Interoperability and Reusability of digital *** has likely contributed to the broad adoption of the FAIR principles,because individual stakeholder communities can implement their own FAIR ***,it has also resulted in inconsistent interpretations that carry the risk of leading to incompatible ***,while the FAIR principles are formulated on a high level and may be interpreted and implemented in different ways,for true interoperability we need to support convergence in implementation choices that are widely accessible and(re)-*** introduce the concept of FAIR implementation considerations to assist accelerated global participation and convergence towards accessible,robust,widespread and consistent FAIR *** self-identified stakeholder community may either choose to reuse solutions from existing implementations,or when they spot a gap,accept the challenge to create the needed solution,which,ideally,can be used again by other communities in the ***,we provide interpretations and implementation considerations(choices and challenges)for each FAIR principle.

关键词： FAIR guiding principles FAIR implementation FAIR convergence FAIR communities choices and challenges

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Elevating Image Steganography:A Fusion of MSB Matching and LSB Substitution for Enhanced Concealment Capabilities

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Computers, Materials & Continua 2024年第5期79卷 2923-2943页

作者： Muhammad Zaman ali Omer Riaz Hafiz Muhammad hasnain Waqas Sharif Tenvir ali Gyu Sang Choi Department of Information Technology The Islamia University of BahawalpurBahawalpur63100Pakistan Department of Computer Science The Islamia University of BahawalpurBahawalpur63100Pakistan School of Computer Science and Engineering Yeungnam UniversityGyeongbuk38541Korea

In today’s rapidly evolving landscape of communication technologies,ensuring the secure delivery of sensitive data has become an essential *** overcome these difficulties,different steganography and data encryption methods have been proposed by researchers to secure *** of the proposed steganography techniques achieve higher embedding capacities without compromising visual imperceptibility using LSB *** this work,we have an approach that utilizes a combinationofMost SignificantBit(MSB)matching andLeast Significant Bit(LSB)*** proposed algorithm divides confidential messages into pairs of bits and connects them with the MSBs of individual pixels using pair matching,enabling the storage of 6 bits in one pixel by modifying a maximum of three *** proposed technique is evaluated using embedding capacity and Peak Signal-to-Noise Ratio(PSNR)score,we compared our work with the Zakariya scheme the results showed a significant increase in data concealment *** achieved results of ourwork showthat our algorithmdemonstrates an improvement in hiding capacity from11%to 22%for different data samples while maintaining a minimumPeak Signal-to-Noise Ratio(PSNR)of 37 *** findings highlight the effectiveness and trustworthiness of the proposed algorithm in securing the communication process and maintaining visual integrity.

关键词： Steganography most significant bit(MSB) least significant bit(LSB) peak signal-to-noise ratio(PSNR)

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FeNi@CNS nanocomposite as an efficient electrochemical catalyst for N_(2)-to-NH_(3) conversion under ambient conditions

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Journal of Materials Science & Technology 2022年第8期103卷 59-66页

作者： Tayiba Ilyas Fazal Raziq Nasir Ilyas Liuxin Yang Sharafat ali Amir Zada Syedul hasnain Bakhtiar Yong Wang Huahai Shen Liang Qiao School of Physics University of Electronic Science and Technology of ChinaChengdu 610054China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 10084China Department of Chemistry Abdul Wali Khan University of MardanMardanKPK 23200Pakistan Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Institute of Nuclear Physics and Chemistry Chinese Academy of Engineering PhysicsMianyang 621900China

The electrocatalytic nitrogen reduction reaction(NRR)has emerged as a promising renewable energy source and a feasible strategy as an alternative to Haber-Bosch ammonia(NH_(3))***,finding an efficient and cost-effective robust catalyst to activate and cleave the extremely strong triple bond in nitrogen(N_(2))for electrocatalytic NRR is still a ***,a FeNi@CNS nanocomposite as an efficient catalyst for N_(2) fixation under ambient conditions is *** FeNi@CNS nanocomposite was prepared by a simple water bath process and *** FeNi@CNS is demonstrated to be a highly efficient NRR catalyst,which exhibits better NRR performance with exceptional Faradaic efficiency of 9.83%and an NH_(3) yield of 16.52μg h^(−1) cm^(−2) in 0.1 M Na_(2)SO_(4) aqueous ***,high stability and reproducibility with consecutive 6 cycles for two hours are also demonstrated throughout the NRR electrocatalytic process for 12 ***,the FeNi@CNS catalyst encourages N_(2) adsorption and activation as well as effectively suppressing competitive ***,this earth-abundant FeNi@CNS catalyst with a subtle balance of activity and stability has excellent potential in NRR industrial applications.

关键词： Electrocatalytic nitrogen reduction Transition-metal alloy FeNi@CNS catalyst N_(2)fixation to NH_(3)

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