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Utility of positron emission tomography-computed tomography scan in detecting residual hepatocellular carcinoma post treatment:Series of case reports

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World Journal of Gastrointestinal Oncology 2020年第3期12卷 358-364页

作者： Jason t Cheng Nelly e tan Michael L Volk transplantation Institute Loma Linda University Medical CenterSan BernardinoCA 92408United States Department of Radiology Loma Linda University Medical CenterLoma LindaCA 92354United States

BACKGROUND Multi-phase computed tomography(Ct)or magnetic resonance imaging(MRI)has been the standard of care for hepatocellular carcinoma(HCC)diagnosis for *** SUMMARY We report a case series of four patients in whom positron emission tomographycomputed tomography(Pet-Ct)scan complemented the conventional Ct/MRI scans in evaluating treatment *** these four cases the conventional multi-phase Ct and MRI failed to identify residual HCC disease post-treatment,while Pet-Ct complemented and aided in treatment response *** each case,the addition of Pet-Ct identified and located residual HCC disease,allowed retreatment,and altered medical *** this case series suggests that Pet-Ct should perhaps play a role in the HCC management algorithm,in addition to the conventional contrast-enhanced multiphase scans.

关键词： Hepatocellular carcinoma Positron emission tomography Contrast-enhanced multiphase scan Cirrhosis Residual cancer treatment response evaluation Case series

Advanced biomedical hydrogels:molecular architecture and its impact on medical applications

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Regenerative Biomaterials 2021年第6期8卷 297-317页

作者： Jonathan t.Peters Marissa e.Wechsler Nicholas A.Peppas McKetta Department of Chemical engineering The University of Texas at AustinAustin200 E.Dean KeetonAustinTX 78712USA Institute for Biomaterials Drug Deliveryand Regenerative MedicineThe University of Texas at Austin107 W.Dean KeetonAustinTX 78712USA Department of Biomedical engineering and Chemical engineering The University of Texas at San AntonioOne UTSA CircleSan AntonioTX78249USA Department of Biomedical engineering The University of Texas at Austin107 W.Dean KeetonAustinTX 78712USA Division of Molecular Pharmaceutics and Drug Delivery College of PharmacyThe University of Texas at Austin107 W.Dean KeetonAustinTX 78712USA Department of Surgery and Perioperative Care and Department of PediatricsDell Medical SchoolThe University of Texas at Austin1601 Trinity St.Bldg.BAustinTX 78712USA

Hydrogels are cross-linked polymeric networks swollen in water,physiological aqueous solutions or biological *** are synthesized by a wide range of polymerization methods that allow for the introduction of linear and branched units with specific molecular *** addition,they can be tuned to exhibit desirable chemical characteristics including hydrophilicity or *** synthesized hydrogels can be anionic,cationic,or amphiphilic and can contain multifunctional crosslinks,junctions or tie *** these characteristics,hydrogels exhibit compatibility with biological systems,and can be synthesized to render systems that swell or collapse in response to external *** versatility and compatibility have led to better understanding of how the hydrogel’s molecular architecture will affect their physicochemical,mechanical and biological *** present a critical summary of the main methods to synthesize hydrogels,which define their architecture,and advanced structural characteristics for macromolecular/biological applications.

关键词： hydrogels networks mesh size hydrogel reactions biological applications biomedical applications

Irradiation induced elongation of Fe nanoparticles embedded in silica films

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International Journal of Smart and Nano Materials 2020年第2期11卷 147-158页

作者： e.A.Dawi t.Ommar R.Ackermann A.A.Karar Faculty of Humanities and Sciences Department of Mathematics and ScienceAjman UniversityAjmanUnited Arab Emirates Debye Institute for Nanomaterials Nanophotonics SectionUtrecht UniversityUtrechtTAThe Netherlands electron Science Research Institute Edith Cowan UniversityJoondalupAustralia

Irradiation with swift heavy ions causes the deformation of Ferric nanoparticles in direction of the ion *** nanoparticles with mean diameter of about 20 nm were prepared by gas flow sputtering and subsequently confined within silica *** silica films wherein two different densities of Fe nanoparticles are encapsulated were irradiated with 50 MeV Ag ions with fluences of few 1014 ***^(-2) at 300 K and normal *** electron microscopy analysis shows that the spherical Fe nanoparticles are deformed into prolate nanorods aligned in direction of the incident ion *** depth distribution profiles of irradiated particles reveal the presence of a critical fluence above which the elongation kinetics becomes dependent on the nanoparticles *** indicates that for the lower density particles,a saturation length is reached under irradiation to fluence between 3-4×10^(14) ***^(-2).However,for the higher density,collective growth into aligned nanowires is presumed to take *** curves of the saturation magnetization and coercivity indicate an increasing magnetic anisotropy,which can be correlated with the deformation of nanoparticles in the direction of the ion beam.

关键词： Ion irradiation fe nanoparticles silica gas flow sputtering nanorods magnetization

Growth and Physical Properties of CdS/tiO_2 Bilayer by Plasma-Based Method

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Chinese Physics Letters 2018年第3期35卷 39-42页

作者： t.Hoseinzadeh M.Ghoranneviss e.Akbarnejad Z.Ghorannevis Department of Physics Science and Research Branch Islamic Azad University Department of Physics Karaj Branch Islamic Azad University

the titanium oxide （tiO2） nanotubes have attracted attention for their use in dye-sensitized solar cells as photoanode. In this study semiconducting cadmium sulfide （CdS） nanoparticles arc grown on top opened tiO2 nanotubes arrays by radio-frequency magnetron sputtering. X-ray diffraction, scanning electron mieroscopy, transmission electron microscopy and diffuse reflection spectra are used to study structural, morphological and optical properties of the CdS/tiO2 bilayer.

关键词： CdS tiO Growth and Physical Properties of CdS/tiO2 Bilayer by Plasma-Based Method

Species delimitation based on diagnosis and monophyly, and its importance for advancing mammalian taxonomy

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Zoological Research 2018年第5期39卷 301-308页

作者： eliécer e.Gutiérrez Guilherme S.t.Garbino Pós-Graduacao em Biodiversidade Animal Departamento de Ecologia e Evolucao Centro de Ciências Naturais e Exatas Universidade Federal de Santa Maria Santa Maria RS 97105-900 Brazil Division of Mammals National Museum of Natural History Smithsonian Institution Washington DC 20013-7012 USA Pós-graduacao Departamento de Zoologia Instituto de Ciências Biológicas Universidade Federal de Minas Gerais Belo Horizonte Minas Gerais 31270-901 Brazil

A recently proposed taxonomic classification of extant ungulates sparked a series of publications that criticize the Phylogenetic Species Concept （PSC） claiming it to be a particularly poor species *** opinions reiteratively stated that （1） the two fundamental elements of the ＂PSC＂,i.e.,monophyly and diagnosability,do not offer objective criteria as to where the line between species should be drawn;and （2） that extirpation of populations can lead to artificial diagnosability and spurious recognitions of *** sudden eruption of criticism against the PSC is *** attributed to the PSC are common to most approaches and concepts that modern systematists employ to establish species *** controversial taxonomic propositions that sparked criticism against the PSC are indeed highly problematic,not because of the species concept upon which they are based,but because no evidence （whatsoever） has become public to support a substantial portion of the proposed *** herein discuss these topics using examples from *** areas of biological research rest upon taxonomic accuracy （including conservation biology and biomedical research）;hence,it is necessary to clarify what are （and what are not）the real sources of taxonomic inaccuracy.

关键词： Alpha taxonomy Phylogenetic SpeciesConcept Species concepts taxonomic inertia taxonomic inflation

Microstructure evolution and mechanical properties of hot deformed Mg9Al1Zn samples containing a friction stir processed zone

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Journal of Magnesium and Alloys 2017年第4期5卷 388-403页

作者： e.Cerri D.Knez t.Rimoldi M.t.Di Giovanni D.I.A.Universitàdi Parma via G.Usberti 181/A43124ParmaItaly FeLMI-ZFe Steyrergasse 178010GrazAustria

During the last decade,FSP of magnesium alloys has become more popular due to the potential microstructure refinement of their eutectic phases,and interest has increased around the AZ1 that is one of the most commercially used magnesium *** this work,high pressure die cast AZ91 plates were tensile tested at high temperatures after friction stir processing(FSP),with the stirred region in the middle of the gauge *** deformed at 350℃ revealed an increment of ductility that was doubled as compared to those deformed at 300℃ and a strengthening of the nugget was measured by Vickers microhardness(HV).the correlation of HV average values to local grain size confirmed the validity of the Hall–Petch type equation where stress is replaced by hardness.X-rays diffraction and electrical conductivity highlighted the potential increment of solute atoms in solid solution during *** electron Microscopy(SeM)and transmission electron Microscopy(teM)investigations performed on as-FSPed and hot deformed samples determined MgAlZn and AlMn particles type evolution through statistical analysis that supported mechanical properties and the strengthening mechanisms.

关键词： AZ91 Friction stir processing Mechanical properties Microstructure SeM teM

Miniaturized antenna design for communication establishment of peer-to-peer communication in the oil pipelines

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Petroleum Research 2021年第3期6卷 291-302页

作者： e.B.Priyanka S.thangavel t.Kalavathidevi Department of Automobile engineering Kongu Engineering CollegeErode638060India Department of Mechatronics engineering Kongu Engineering CollegeErode638060India Department of electronics and Instrumentation engineering Kongu Engineering CollegeErode638060India

In the oil pipeline world,wireless automation plays an important role through integrated electronic technology in antenna design for robust *** technology gets evaluated by its power consumption and compactness to afford a better solution to real-world problems with better sophistication to adopt a modernized wireless *** that,the Iot(Internet of things)technology plays a predominant role by combining with Artificial Intelligence to optimize and revolute the characterization of data *** the data communication is initiated,the main contributor to the transmission is the miniaturized antenna holding different types in its structure and *** acquires the required radio spectrum channel with the advanced multi coding modulating technique by utilizing token ring mesh topology for the data transfer with acquired data *** chapter describes the design and fabrication of a miniaturized antenna using MeMS technology(Micro-electro-Mechanical System)and its different types using INteLLISUIte software to get suited for better communication in oil *** on the application,it also enumerates the choices of micro or nanoantennas with its specification upholding data adopting techniques with modulation schemes to support Iot applications.

关键词： Antenna MeMS Channel width Optimization Oil pipelines and Iot

Bound in continuum states and induced transparency in mesoscopic demultiplexer with two outputs

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Chinese Physics B 2020年第12期29卷 429-437页

作者： Z Labdouti t Mrabti A Mouadili e H el Boudouti F Fethi B Djafari-Rouhani LPMR Dèpartement de PhysiqueFacultèdes SciencesUniversitèMohammed IOujdaMorocco LStA Dèpartement de PhysiqueFacultèPolydisciplinaire de LaracheUniversitèAbdelmalek EssaadiTètouanMorocco LPMCeR Dèpartement de PhysiqueFacultèdes Sciences et Techniques de MohammediaUniversitèHassan IICasablancaMorocco IeMN UMR CNRS 8520UFR de PhysiqueUniversitède Lille59655 Villeneuve d'AscqFrance

We investigate the electronic transport in a simple mesoscopic cross structure made of two wires(stubs)grafted at the same point along a quantum *** show that the structure may exhibit important phenomena such as bound in continuum(BIC)*** states are transformed into electromagnetically induced transparency(eIt)resonance by detuning slightly the lengths of the *** last phenomenon is used to propose and study a mesoscopic demultiplexer device with an input waveguide and two output *** give closed-form expressions of the geometrical parameters that allow a selective transfer of a given state in the first waveguide without perturbing the second *** effect of temperature on the transmission resonances is also examined by using Landauer-Büttiker *** analytical results of the dispersion relation and transmission and reflection coefficient are obtained using the Green's function method.

关键词： mesoscopic structure demultiplexer device bound states in continuum(BIC) eIt resonance

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美国页岩油气地质特征及勘探开发进展

石油勘探与开发 2024年第4期51卷 807-828页

作者： MCMAHON t P LARSON t e ZHANG t SHUSteR M 美国德克萨斯大学奥斯汀分校杰克逊地质科学学院经济地质局奥斯汀78758-4445德克萨斯州美国

基于美国页岩油气勘探开发历程的回顾,对主要页岩盆地的地质演化、主要页岩层系的油气地质特征及勘探开发进展进行系统梳理和总结。美国重要页岩盆地的富烃页岩主要发育于6个地质时期:中奥陶世、中—晚泥盆世、早石炭世(中—晚密西西比... 详细信息

基于美国页岩油气勘探开发历程的回顾,对主要页岩盆地的地质演化、主要页岩层系的油气地质特征及勘探开发进展进行系统梳理和总结。美国重要页岩盆地的富烃页岩主要发育于6个地质时期:中奥陶世、中—晚泥盆世、早石炭世(中—晚密西西比世)、早二叠世、晚侏罗世和晚白垩世(塞诺曼期—土伦期),构造沉积环境主要包括克拉通内盆地、前陆盆地和被动大陆边缘盆地。古生界富烃页岩主要分布于以下6个盆地:阿巴拉契亚盆地(尤蒂卡页岩和马塞勒斯页岩)、阿纳达科盆地(伍德福德页岩)、威利斯顿盆地(巴肯页岩)、阿卡马盆地(费耶特维尔页岩)、沃思堡盆地(巴内特页岩)和二叠盆地(狼营组和斯帕瑞组/骨泉组页岩)。中生界富烃页岩主要发育在西墨西哥湾盆地(海恩斯维尔组和鹰滩组)和落基山盆地群(以丹佛和粉河盆地的尼尔布拉勒组页岩为主)。通过对各页岩区带的详细分析发现,页岩的岩相和矿物成分存在差异,“页岩储层”并非只是页岩,很多情况下页岩油气还产自粉砂岩和碳酸盐岩等多种岩石类型。美国的页岩油气资源丰富,页岩油地质资源量超过0.246×1012 t,页岩气地质资源量超过290×1012 m3。在开启“页岩革命”的水平井水力压裂技术出现之前,美国经过了长达20年的勘探开发实践和理论技术积累。自2007年至2023年,美国页岩油气产量从约11.2×104t/d油当量增加到超过300.0×104t/d油当量,2017年页岩油气产量超过了常规油气,2023年在油气总产量中的占比增加到60%以上。页岩油气的开发主要得益于钻完井技术的改进,“立体开发”的攻关,以及重复压裂、提高原油采收率和“U”形井等技术的应用。基于美国丰富的页岩资源基础和技术的不断进步,页岩油气的产量将继续为全美的油气生产做出更大贡献。

关键词：美国页岩油页岩气页岩储层非常规储层油气产量资源评价

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