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Stereotactic radiotherapy for intrahepatic cholangiocarcinoma

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World Journal of Gastrointestinal Oncology 2022年第8期14卷 1478-1489页

作者： Aditya Borakati farid Froghi Ricky H Bhogal Vasileios K Mavroeidis Department of Surgery The Royal London HospitalBarts Health NHS TrustLondon E11FRUnited Kingdom Department of HPB and Liver Transplantation Surgery Royal Free Hospital NHS Foundation TrustLondon NW32QGUnited Kingdom Department of Academic Surgery The Royal Marsden NHS Foundation TrustLondon SW36JJUnited Kingdom

Intrahepatic cholangiocarcinoma(iCCA)is an aggressive malignancy with an increasing incidence worldwide and poor prognosis,despite several advances and continuous efforts to develop effective *** surgical resection is the mainstay of treatment and offers a potentially curative option,but is only possible in less than a third of patients,owing to advanced *** is a well-established treatment in the adjuvant and palliative setting,however,confers limited *** radiotherapy is challenging due to local *** recent advances in stereotactic ablative radiotherapy(SABR),it is now possible to focus ablative beams of radiotherapy precisely aimed at tumours to minimise damage to surrounding *** review details the history,technical background and application of SABR to iCCA,with directions for future research suggested.

关键词： Cholangiocarcinoma Intrahepatic Stereotactic ablative radiotherapy Stereotactic body radiotherapy Radiotherapy Liver cancer Hepatectomy

Toward Energy-Efficient and Trustworthy eHealth Monitoring System

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China Communications 2015年第1期12卷 46-65页

作者： Ajmal Sawand Soufiene Djahel Zonghua Zhang farid Na?t-Abdesselam Paris Descartes University University College Dublin TELECOM Lille

The rapid technological convergence between Internet of Things （loT）, Wireless Body Area Networks （WBANs） and cloud computing has made e-healthcare emerge as a promising application domain, which has significant potential to improve the quality of medical care. In particular, patient-centric health monitoring plays a vital role in e-healthcare service, involving a set of important operations ranging from medical data collection and aggregation, data transmission and segregation, to data analytics. This survey paper firstly presents an architectural framework to describe the entire monitoring life cycle and highlight the essential service components. More detailed discussions are then devoted to {／em data collection} at patient side, which we argue that it serves as fundamental basis in achieving robust, efficient, and secure health monitoring. Subsequently, a profound discussion of the security threats targeting eHealth monitoring systems is presented, and the major limitations of the existing solutions are analyzed and extensively discussed. Finally, a set of design challenges is identified in order to achieve high quality and secure patient-centric monitoring schemes, along with some potential solutions.

关键词： eHealthcare wireless body area networks cyber physical systems mobile crowd sensing security privacy by design trust.

nanodiamond films deposited at moderate temperature on pure titanium substrate pretreated by ultrasonic scratching in diamond powder suspension

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Journal of University of Science and Technology Beijing 2006年第6期13卷 542-545页

作者： Syed Jawid Askari Fanxiu Lv Akhtar farid Fengying Wang Qi He Zuyuan Zhou Materials Science and Engineering School University of Science and Technology Beijing Beijing 100083 China ES Department PNEC PNS Jauhar National University of Sciences ＆ Technology Karachi-75350 Pakistan

nanocrystalline diamond （NCD） film deposition on pure titanium and Ti alloys is extraordinarily difficult because of the high diffusion coefficient of carbon in Ti, the large mismatch in their thermal expansion coefficients, the complex nature of the interlayer formed during diamond deposition, and the difficulty to achieve very high nucleation density. In this investigation, NCD films were successfully deposited on pure Ti substrate by using a novel substrate pretreatment of ultrasonic scratching in a diamond powder-ethanol suspension and by a two-step process at moderate temperature. It was shown that by scratching with a 30-μm diamond suspension for 1 h, followed by a 10-h diamond deposition, a continuous NCD film was obtained with an average grain size of about 200 nm. Detailed experimental results on the preparation, characterization, and successful deposition of the NCD films on Ti were discussed.

关键词： nanocrystalline diamond film pure Ti substrate nucleation enhancement moderate temperature

Surface ligand engineering on the optical properties of atomically precise AuAg nanoclusters

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Chinese Journal of Structural Chemistry 2023年第9期42卷 1-5页

作者： Xiang Liu Yifei Zhang Zhiwen Li Gao Li farid Taherkhani Hunan Drug Inspection Center Hunan Institute for Drug ControlChangsha410013China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China Institute of Catalysis for Energy and Environment College of Chemistry and Chemical EngineeringShenyang Normal UniversityShenyang110034China University of Chinese Academy of Sciences Beijing100049China Departments of Production Engineering Universität Bremen Bibliothekstraße 128359Germany

*** In recent decade,atomically precise metal nanoclusters,comprised of metal kernel and surface protecting ligands,have appeared as a new and promising nanomaterial for abundant applications,such as nanocatalysis,sensor,photoluminescence,a few to name,which is attributed to their electron energy quantization arising from quantum size effect[1].And the very recent investigations showed that the configuration of metal kernel and the electronic properties of metal nanoclusters with the same metal core are largely affected by the surface protecting ligands[[2],[3]].For example,the surface ligands can significantly alter the catalytic performance of metal nanocluster catalysts(*** and selectivity)in a positive *** have found that the Au_(25)(SR)_(18)nanocluster with the aromatic ligands can give higher conversions and a markedly increasing selectivity toward the desired product[4].

关键词： precise clusters selectivity

Mapping Structurally Controlled Alterations Sparked by Hydrothermal Activity in the Fatira–Abu Zawal Area,Eastern Desert,Egypt

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Acta Geologica Sinica(English Edition) 2023年第2期97卷 662-680页

作者： Mohamed badAWI Mahmoud ABDELATIF Ali SHEBL farid MAKROUM Ahmed SHALABY Norbert NéMETH Institute of Exploration Geosciences University of MiskolcMiskolc 3515Hungary Department of Geology Mansoura UniversityMansoura 35516Egypt Department of Geology South Valley UniversityQena 83523Egypt Department of Mineralogy and Geology University of DebrecenDebrecen 4032Hungary Department of Geology Tanta UniversityTanta 31527Egypt

The Eastern Desert of Egypt suffered a protracted period of deformation triggered by cratonization of the new juvenile crust known as the Arabian Nubian Shield(ANS),which has been proposed for potential gold discoveries associated with the corresponding tectonic *** Fatira area,on the border of Egypt’s Northern and Central Eastern Deserts,is covered with metavolcanic rocks twisted by a dextral relocation of the Fatira Shear Zone(FSZ)relative to the Barud magmatic *** recent study evaluated many deformed post-orogenic granitic intrusions and felsite dikes associated with promising mineralization localities,notably orogenic gold *** combination of various field observations and remote sensing data,followed by the analysis of aeromagnetic enhanced maps,allowed the differentiation of distinct lithologies,structural features,and hydrothermal alterations in the study ***,the integrated results obtained from the different interpretation techniques are utilized to identify and confirm the previously supposed mineralized localities in the Fatira and Abu Zawal areas and predict other matched *** final ASTER,Sentinel 2 hydrothermal alteration,and orientation entropy heat maps demonstrate the association between these mineralized regions and major structures related to the FSZ late stage of deformation rather than other structures studied throughout the area of interest.

关键词： gold granite island arc association Pan-African Orogeny Egypt

Signature of the 27-day variation in hemispheric sunspot activity and asymmetry during 2010-2015

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Research in Astronomy and Astrophysics 2021年第4期21卷 331-340页

作者： Prithvi Raj Singh Ahmad Islam Saad farid Tarun Kumar Pant Abhay Kumar Singh Department of Physics Banaras Hindu UniversityVaranasi-221005India Physics and Chemistry Department Faculty of EducationAlexandria UniversityAlexandria-21526Egypt Space Physics Laboratory VSSCThiruvananthapuram-695022India

In the present work,we study the time evolution,significance of the N-S asymmetry excesses presented as a function of the solar cycle and prominent rotational periods(~27 d)separately for the northern and southern *** have investigated short-term variations of the hemispheric solar activity(sunspot numbers and sunspot areas)during the time period 2010-2015,which covers the ascending and the maximum phase of solar cycle *** have implemented the Lomb-Scargle periodogram and continuous wavelet transform power spectrum techniques to study the time evolution and dominant rotational periods separately for the northern and southern hemispheres,and whole solar *** results showed that the northern hemisphere exhibited longer solar synodic periods than the southern hemisphere,indicating that the northern hemisphere has a lower rotation ***,the northern hemisphere was found to be dominant before transferring to the southern hemisphere during ***,the sunspot areas clearly demonstrated a two-peak structure of solar activity in the northern and southern hemispheres respectively during 2012 and *** statistical significance of the southern hemisphere affirmed enhanced excess during the maximum phase of solar cycle 24.

关键词： Sunspots Sunspot Area Asymmetry Solar Cycle

Liver transplantation in the management of cholangiocarcinoma:Evolution and contemporary advances

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World Journal of Gastroenterology 2023年第13期29卷 1969-1981页

作者： Aditya Borakati farid Froghi Ricky H Bhogal Vasileios K Mavroeidis Department of HPB and Liver Transplantation Surgery Royal Free Hospital NHS Foundation TrustLondon NW32QGUnited Kingdom Department of Academic Surgery The Royal Marsden NHS Foundation TrustLondon SW36JJUnited Kingdom

Cholangiocarcinoma(CCA)is an aggressive malignancy arising from the biliary *** may occur at any location along the biliary tree with the perihilar area being the most *** is poor with 5-year overall survival at less than 10%,typically due to unresectable disease at *** surgical resection with clear margins offers a chance of cure in patients with resectable tumours,but is frequently not possible due to locally advanced *** the other hand,orthotopic liver transplantation(LT)allows for a radical and potentially curative resection for these patients,but has been historically controversial due to the limited supply of donor grafts and previously poor *** patients with perihilar CCA,within specific criteria and following the implementation of a protocol combining neoadjuvant chemoradiation and LT,excellent results have been achieved in the last decades,resulting in its increasing acceptance as an indication for LT and the standard of care in several centres with significant ***,in intrahepatic CCA,the role of LT remains controversial and owing to dismal previous results it is not an accepted ***,more recent studies have demonstrated favourable results with LT in early intrahepatic CCA,indicating that,under defined criteria,its role may increase in the *** review highlights the history and contemporary advances of LT in CCA,with particular focus on the improving outcomes of LT in intrahepatic and perihilar CCA and future perspectives.

关键词： Cholangiocarcinoma Klatskin tumor Liver transplantation Liver cancer Liver resection Neoadjuvant therapy

Fast and efficient removal of silver(Ⅰ) from aqueous solutions using aloe vera shell ash supported Ni_(0.5)Zn_(0.5)Fe_2O_4 magnetic nanoparticles

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Transactions of Nonferrous Metals Society of China 2016年第8期26卷 2238-2246页

作者： Parisa BEIGZADEH farid MOEINPOUR Department of Chemistry Bandar Abbas Branch Islamic Azad University Bandar Abbas *** Iran

Silver (I) was removed from aqueous environment by aloe vera shell ash supported Ni0.5Zn0.5Fe2O4 magnetic *** adsorbent was characterized by several methods including X-ray diffraction (XRD), scanning electron microscopy (SEM), BETisotherm, vibrating sample magnetometer (VSM) and Fourier transform infrared spectroscopy (FT-IR). To determine the absorptionof silver (I) by this adsorbent, different pH values (2?7), adsorbent dose (0.01?0.5 g), concentrations of Ag+ (50, 100, 200, 300, 500,700 and 1000 mg/L) and exposure time (5?100 min) were experimented. The highest removal efficiency of Ag+ was achieved underoptimum condition (30 min and pH=5). The optimum adsorbent dose was 0.20 g (in 50 mL of 100 mg/L Ag+ solution), whichachieved a removal efficiency of 98.3%. The maximum monolayer adsorption capacity based on the Langmuir isotherm is243.90 mg/g. Characterization results revealed that specific surface area and porous volume were 814.23 m2/g and 0.726 cm3/g,respectively. The experimental data were fitted well with the Langmuir and Freundlich isotherm models. Synthesized adsorbent has desired surface area and adsorptive capacity for silver (I) adsorption in aquatic environment.

关键词： dsorption Ag+ ions Ni0.5Zn0.5Fe2O4 aloe vera

Ultrasonic synthesis of Zn-doped CdO nanostructures and their optoelectronic properties

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Transactions of Nonferrous Metals Society of China 2018年第11期28卷 2256-2265页

作者： Milad KAVAKEBI farid JAMALI-SHEINI Department of Materials Science and Engineering Ahvaz BranchIslamic Azad UniversityAhvazIran Advanced Surface Engineering and nano Materials Research Center Department of PhysicsAhvaz BranchIslamic Azad UniversityAhvazIran

The effect of Zn dopant on the growth of cadmium oxide （CdO） nanostructures through a sonochemical method wasinvestigated. The X-ray diffraction （XRD） patterns of the nanoparticles show CdO cubic structures for the produced samples. Fieldemission scanning electron microscope （FESEM） images reveal that morphologies of the samples change, when they are doped withZn atoms, and their sizes reduce. Room temperature photoluminescence （PL） and UV-Vis spectrometers were used to study opticalproperties of the samples. Evaluation of optical properties indicates that different emission bands result from different transitions andthe value of CdO energy band gap increases due to doping. Studies of electrical properties of the nanostructures demonstrate that Zndopant enhances electrical conductivity and photocurrent generation as the result of light illumination on the nanostructures due toimproved density of photo-generated carriers. Considering the obtained outcomes, Zn dopant can alter the physical property of theCdO nanostructures.

关键词： Zn-doped CdO nanostructures ultrasonication method optical properties electrical properties