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Khan, Nauman Rauf,Khan, Amna Nauman,Bashir, Saira,Khan, Ayyaz Ali,Suleman, Bilquis A.,Chaudhry, Saima Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.3
P63 is a gene product required in cell cycle regulation which plays vital roles in tumor differentiation. Aims of the present study were to assess the frequency, pattern, sensitivity and specificity of two p63 protein clones P63 4A4 and P63 4A4+Y4A3 in squamous cell carcinomas (SCCs). Thirty cases of head and neck region SCC diagnosed on the basis of H&E staining were examined along with 60 cases of head and neck region biopsies other than squamous cell carcinoma, negative on H&E staining, were taken as control. Immunostaining was performed on slides according to the Thermo Scientific UltraVision LP detection System. P63 4A4+Y4A3 clone is more sensitive 96.6% in comparison to 86% in P63 4A4 with having greater NPV of 98.3%. The results signify the importance of P63 4A4+Y4A3 marker over the old markers and may be used as a confirmatory marker of squamous cell carcinoma.
저전력 변형률 시각화 시스템을 이용한 클라우드 기반 데이터 관리
술래만칸 ( Suleman Khan ),원종빈 ( Jongbin Won ),신준식 ( Junsik Shin ),박준영 ( Junyoung Park ),박종웅 ( Jong-woong Park ) 한국구조물진단유지관리공학회 2021 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.25 No.1
This study introduces a high-fidelity and low-power strain visualization system along with a cloud-based data management approach for long-term structural health monitoring (SHM). The strain was visualized as a QR code on an electronic paper display. .The accuracy of the proposed system was validated with a reference strain measuring system (Xnode) in a lab-scale experiment. A cantilever beam mounted with a table was deflected with increasing load, and strain response was measured from both systems. Furthermore, an experiment at POSCO was conducted for the application of a multi-channel visualization system to structures.
전위차법(EPDM)기반 스마트 센서를 이용한 강부재의 균열 모니터링
정성진 ( Jung Sungjin ),슐레만칸 ( Khan Suleman ),이재홍 ( Lee Jaehong ),박종웅 ( Park Jongwoong ) 한국구조물진단유지관리공학회 2021 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.25 No.2
과거부터 EPDM을 이용한 강 구조물의 균열 모니터링에 관한 연구는 이뤄지고 있었으나 장기간적 구동, 데이터로의 접근성 등의 문제를 해결할 시스템은 부재하다. 균열은 콘크리트뿐 아니라 강부재의 수명 저하에도 큰 원인이 되는 요인이기 때문에 저전력으로 장기간 구동 가능한 스마트 센서를 이용해 균열의 모니터링부터 데이터로의 접근성을 향상시키는 시스템은 SOC 유지관리에 꼭 필요한 기술이다. 본 연구에서는 저가로 멀티채널 측정이 가능한 센서를 개발했으며, 센싱 데이터로의 접근성을 향상시키기 위해 EPD를 이용한 QR코드의 시각화 또는 AWS MQTT Broker를 이용한 서버 통신망 구축을 통한 균열 모니터링 실험을 수행한 결과를 소개한다. 본 기술이 현장에 적용되면 SOC의 유지관리가 보다 경제적이고 스마트하게 실시될 것으로 기대된다.
The electrical, dielectric and magnetic effect of MgFe2O4–polypyrrole and its composites
Alburaih H. A.,Khan Sajjad Ahmad,Khosa Rabia Yasmin,Ejaz Syeda Rabia,Khan Abdul Rauf,Muhammad Ghulam,Waheed Muhammad Suleman,Chughtai Adeel Hussain,Manzoor Sumaira,Aman Salma 한국세라믹학회 2023 한국세라믹학회지 Vol.60 No.2
In the modern world of health and life sciences, the utilization of nanoscale materials, particularly magnetic nanoparticles, is a hot topic. Here in the present study, MgFe2O4 is synthesized via the chemical co-precipitation technique, and the polypyrrole (PPy) is fabricated via in situ polymerization technique to form the MgFe2O4/PPy nanocomposite by varying its content in the ferrite material. The electrical, magnetic, and dielectric properties of the fabricated materials were studied to investigate their applications in electronic devices. The magnetization saturation Ms, remanence Mr and coercivity Hc increase with the addition of ferrite material. The activation of the fabricated material increases from 0.11 to 0.34 eV, indicating the increase in electrical resistivity. The other important parameters such as squareness ratio and drift mobility were also calculated. The increment in DC electrical resistivity, saturation magnetic magnetization and remanence as well as reduction in dielectric constant values with the ferrite material addition in the polypyrrole suggest that the materials can be beneficial for recording media as well as high-frequency devices.
콘크리트 임베딩 가능한 반응형 스마트 센서와 디지털 트윈 시스템
김수혁 ( Kim Soohyeok ),슐레만칸 ( Khan Suleman ),원종빈 ( Won Jongbin ),박종웅 ( Park Jongwoong ) 한국구조물진단유지관리공학회 2021 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.25 No.2
디지털 트윈 기술을 이용해 시설물을 유지관리 하려는 시도가 이뤄지고 있으나 운송, 인양, 적재 등 다양한 환경에 노출되는 프리팹의 초기 상태를 계측하는 시스템은 부재하다. 프리팹의 초기 상태는 구조물의 안전성에 직결되기 때문에 하나의 센서를 이용해 프리팹의 생산부터 시공까지 생애주기에 전체에 걸쳐 부재를 관리하는 시스템은 미래의 유지관리에 꼭 필요한 기술이다. 이 기술은 이전부터 요구되었으나 기존 기술(FBG 등)의 막대한 비용과 센서기술의 부재로 적용되지 못하였다. 본 연구에서는 저가로 멀티채널 측정이 가능한 센서를 개발하고, 센서 데이터와 연동되는 디지털 트윈 모델도 구축해 실증 시험을 여러 차례 수행한 결과를 소개한다. 본 기술이 현장에 적용되면 미래의 유지관리를 경제적이고 스마트하게 실시될 것으로 기대한다.
Survey on Network Virtualization Using OpenFlow: Taxonomy, Opportunities, and Open Issues
( Ahmed Abdelaziz ),( Tan Fong Ang ),( Mehdi Sookhak ),( Suleman Khan ),( Athanasios Vasilakos ),( Chee Sun Liew ),( Adnan Akhunzada ) 한국인터넷정보학회 2016 KSII Transactions on Internet and Information Syst Vol.10 No.10
The popularity of network virtualization has recently regained considerable momentum because of the emergence of OpenFlow technology. It is essentially decouples a data plane from a control plane and promotes hardware programmability. Subsequently, OpenFlow facilitates the implementation of network virtualization. This study aims to provide an overview of different approaches to create a virtual network using OpenFlow technology. The paper also presents the OpenFlow components to compare conventional network architecture with OpenFlow network architecture, particularly in terms of the virtualization. A thematic OpenFlow network virtualization taxonomy is devised to categorize network virtualization approaches. Several testbeds that support OpenFlow network virtualization are discussed with case studies to show the capabilities of OpenFlow virtualization. Moreover, the advantages of popular OpenFlow controllers that are designed to enhance network virtualization is compared and analyzed. Finally, we present key research challenges that mainly focus on security, scalability, reliability, isolation, and monitoring in the OpenFlow virtual environment. Numerous potential directions to tackle the problems related to OpenFlow network virtualization are likewise discussed