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Mn_(x)Cr_(0.3)Fe_(0.5)Co_(0.2)Ni_(0.5)Al_(0.3)high entropy alloys for magnetocaloric refrigeration near room temperature

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Journal of Materials Science & Technology 2021年第20期79卷 15-20页

作者： Zhihua Dong Shuo Huang Valter Ström Guocai Chai lajos Károly varga Olle Eriksson Levente Vitos Applied Materials Physics Department of Materials Science and EngineeringKTH-Royal Institute of TechnologyStockholm SE-10044Sweden College of Materials Science and Engineering Chongqing UniversityChongqing 400030China Department of Physics and Astronomy Division of Materials TheoryUppsala UniversityUppsala SE-75121Sweden Department of Materials Science and Engineering KTH-Royal Institute of TechnologyStockholm SE-10044Sweden Division of Engineering Materials Department of Management and EngineeringLinköping UniversityLinköping SE-58183Sweden AB Sandvik Materials Technology R&D Center Sandviken SE-81181Sweden School of Science and Technology Örebro UniversityÖrebro SE-70281Sweden Research Institute for Solid State Physics and Optics Wigner Research Center for PhysicsP.O.Box 49H-1525 BudapestHungary

High entropy alloys(HEAs)based on transition metals display rich magnetic characteristics,however attempts on their application in energy efficient technologies remain ***,we explore the magnetocaloric application for... 详细信息

关键词： High entropy alloys Magnetocaloric materials Magnetic phase transition Experiment and Ab initio

Semi-blind Adaptive Beamforming for High-throughput Quadrature Amplitude Modulation Systems

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International Journal of Automation and computing 2010年第4期7卷 565-570页

作者： lajos Hanzo School of Electronics and Computer Science University of Southampton

A semi-blind adaptive beamforming scheme is proposed for wireless systems that employ high-throughput quadrature amplitude modulation signalling. A minimum number of training symbols, equal to the number of receiver antenna arrayts elements, are first utilised to provide a rough initial least squares estimate of the beamformer＇s weight vector. A concurrent constant modulus algorithm and soft decision-directed scheme is then applied to adapt the beamformer. This semi-blind adaptive beamforming scheme is capable of converging fast to the minimum mean-square-error beamforming solution, as demonstrated in our simulation study.

关键词： Beamforming minimum mean square error quadrature amplitude modulation semi-blind adaptive algorithm constant modulus algorithm soft decision-directed scheme.

Current status of thiopurine analogues in the treatment in Crohn's disease

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World Journal of Gastroenterology 2011年第39期17卷 4372-4381页

作者： Peter Laszlo Lakatos lajos S Kiss 1st Department of Medicine Semmelweis University

In the last decades,with the development of biological therapy,the treatment paradigms in patients with Crohn＇s disease have continuously *** studies focusing on the optimal use of both traditional immunosuppressants and biological therapy have been published,investigating conventional,accelerated stepup and top-down *** addition,much emphasis has been placed in recent years on the de-termination of important predictive factors that could enable early patient stratification,which would lead to a tailored management *** this review,the authors try to highlight new evidence on the optimal timing,benefits,and risks of immunosupressants alone,or in combination,in patients with Crohn＇s disease.

关键词： Crohn's disease Immunosuppressives Azathioprine Thiopurine methyltrans ferase Biologicals

Is the disease course predictable in inflammatory bowel diseases?

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World Journal of Gastroenterology 2010年第21期16卷 2591-2599页

作者： Peter Laszlo Lakatos lajos S Kiss 1st Department of Medicine Semmelweis UniversityH-1083 BudapestKoranyi S 2AHungary

During the course of the disease,most patients with Crohn's disease(CD) may eventually develop a stricturing or a perforating complication,and a significant number of patients with both CD and ulcerative colitis will undergo *** recent years,research has focused on the determination of factors important in the prediction of disease course in inflammatory bowel diseases to improve stratification of patients,identify individual patient profiles,including clinical,laboratory and molecular markers,which hopefully will allow physicians to choose the most appropriate management in terms of therapy and intensity of *** review summarizes the available evidence on clinical,endoscopic variables and biomarkers in the prediction of short and long-term outcome in patients with inflammatory bowel diseases.

关键词： Inflammatory bowel disease Crohn’s disease Ulcerative colitis Disease course Predictive markers Clinical Serology Genetics

Protein and non-protein sulfhydryls and disulfides in gastric mucosa and liver after gastrotoxic chemicals and sucralfate: Possible new targets of pharmacologic agents

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World Journal of Gastroenterology 2007年第14期13卷 2053-2060页

作者： lajos Nagy Miki Nagata Sandor Szabo Departments of Pathology Brigham & Women's Hospital Harvard Medical SchoolBostonMassachusetts 02115and Pathology and Laboratory Medicine ServiceDiagnostic & Molecular Medicine HCGVA Medical Center9901 East 7th St. Long BeachCA 90822United States Depts. of 3rd Internal Medicine and Family MedicineFaculty of MedicineUniversity of PecsH-7632 PecsHungary Departments of Pathology Brigham & Women's Hospital Harvard Medical SchoolBostonMassachusetts 02115and Pathology and Laboratory Medicine ServiceDiagnostic & Molecular Medicine HCGVA Medical Center9901 East 7th St. Long BeachCA 90822United States

AIM： To investigate the role of major non-protein and protein sulfhydryls and disulfides in chemically induced gastric hemorrhagic mucosal lesions （HML） and the mechanism of gastroprotective effect of sucralfate.METHODS： Rats were given 1 mL of 75% ethanol, 25%NaCl, 0.6 mol/L HCI, 0.2 mol/L NaOH or 1% ammonia solutions intragastrically （i.g.） and sacrificed 1, 3, 6 or 12 min later. Total （reduced and oxidized） glutathione （GSH ＋ GSSG）, glutathione disulfide （GSSG）, protein free sulfhydryls （PSH）, protein-glutathione mixed disulfides （PSSG） and protein cystine disulfides （PSSP） were measured in gastric mucosa and liver.RESULTS： Reduced glutathione （GSH） was depleted in the gastric mucosa after ethanol, HCI or NaCl exposure,while oxidized glutathione （GSSG） concentrations increased, except by HCI and NaOH exposure. Decreased levels of PSH after exposure to ethanol were observed,NaCl or NaOH while the total protein disulfides were increased. Ratios of reduced to oxidized glutathione or sulfhydrils to disulfides were decreased by all *** changes in thiol homeostasis were detected in the liver after i.g. abbreviation should be spelled out the first time here administration of ethanol. Sucralfate increased the concentrations of GSH and PSH and prevented the ethanol-induced changes in gastric mucosal thiol concentrations.CONCLUSION： Our modified methods are now suitable for direct measurements of major protein and nonprotein thiols/disulfides in the gastric mucosa or liver.A common element in the pathogenesis of chemically induced HML and in the mechanism of gastroprotective drugs seems to be the decreased ratios of reduced and oxidized glutathione as well as protein sulfhydryls and disulfides.

关键词： Non-protein and protein thiol Gastricmucosal injury Gastroprotection Sucralfate

Variational quantum attacks threaten advanced encryption standard based symmetric cryptography

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Science China(Information Sciences) 2022年第10期65卷 31-42页

作者： Zeguo WANG Shijie WEI Gui-Lu LONG lajos HANZO State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics Tsinghua University Beijing Academy of Quantum Information Sciences Beijing National Research Center for Information Science and Technology School of Information Tsinghua University Frontier Science Center for Quantum Information Department of Electronics and Computer Science (ECS) University of Southampton

We propose a variational quantum attack algorithm(VQAA) for classical advanced encryption standard(AES)-like symmetric cryptography, as exemplified by the simplified-data encryption standard(S-DES). In the VQAA, the known ciphertext is encoded as the ground state of a Hamiltonian that is constructed through a regular graph, and the ground state can be found using a variational approach. We designed the ansatz and cost function for the S-DES’s variational quantum attack. It is surprising that sometimes the VQAA is even faster than Grover’s algorithm as demonstrated by our simulation results. The relationships of the entanglement entropy, concurrence, and the cost function are investigated, which indicate that entanglement plays a crucial role in the speedup.

关键词： S-DES VQA ansatz cost function optimization

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Petahertz communication:Harmonizing optical spectra for wireless communications

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Digital Communications and Networks 2021年第4期7卷 605-614页

作者： Zhengyuan Xu Weijie Liu Zhaocheng Wang lajos Hanzo Wireless-Optical Communications Key Laboratory of CAS University of Science and Technology of ChinaHefei230027China Department of Electronic Engineering Tsinghua UniversityBeijing100084China School of Electronics and Computer Science University of SouthamptonSouthamptonS0171BJUK

With the rapid deployment of Next-Generation Networks(NGN),the research community has initiated discussions on an entirely new suite of optical enabling *** pave the way for the development of future wireless networks,this article aims to unify the existing infrared,visible light,and ultraviolet subbands while also exploring the potential of the Petahertz(PHz)band to support extremely bandwidth-thirsfy telepresence style *** focus is on the emerging Petahertz Communication(PetaCom)framework,scenario-dependent propagation channels,modulation schemes,system performance,multiple access techniques,and *** conclude with a range of PetaCom challenges and open research issues.

关键词： Petahertz communication Petahertz spectrum harmonization Optical spectrum Optical wireless communication

Blind Joint Maximum Likelihood Channel Estimation and Data Detection for SIMO Systems

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International Journal of Automation and computing 2007年第1期4卷 47-51页

作者： lajos Hanzo School of Electronics and Computer Science University of SouthamptonSouthampton SO17 1BJUK

A blind adaptive scheme is proposed for joint maximum likelihood （ML） channel estimation and data detection of singleinput multiple-output （SIMO） systems. The joint ML optimisation over channel and data is decomposed into an iterative optimisation loop. An efficient global optimisation algorithm called the repeated weighted boosting search is employed at the upper level to optimally identify the unknown SIMO channel model, and the Viterbi algorithm is used at the lower level to produce the maximum likelihood sequence estimation of the unknown data sequence. A simulation example is used to demonstrate the effectiveness of this joint ML optimisation scheme for blind adaptive SIMO systems.

关键词： Blind space-time equalisation single-input multiple-output (SIMO) systems maximum likelihood (ML) estimation.

FULL-DUPLEX WIRELESS COMMUNICATIONS

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China Communications 2016年第11期13卷 I0001-I0003页

作者： lajos hanzo chengwen xing zhongshan zhang yiqing zhou eurasip the ieee vts school of information and electronics beijing institute of technology school of computer and communication engineering in the university of science and technology beijing (ustb) the wireless communication research center institute of computing technologychinese academy of sciences the ieee transactions on vehicular technology the ieee journal on selected areas in communications wireless communications and mobile computing the transactions on emerging telecommunications technologies the journal of computer science and technology

Just as Dickens wrote,it is the best of times,it is the worst of *** increasing traffic demands will bring us into the era of *** of unprecedented or even unanticipated fancy wireless applications will definitely change our *** the beautiful visions promised by 5G,meanwhile the wireless engineers are faced with unprecedented challenges and pressures for realizing much higher spectrum efficiency and

关键词：无线通信交通需求无线应用