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Analysis in Theory and Applications 2015年第3期31卷 253-259页

作者： F.E.levis Departamento de Matemtica Universidad Nacional de Río Cuarto

In this short note, we show the behavior in Orlicz spaces of best approximations by algebraic polynomials pairs on union of neighborhoods, when the measure of them tends to zero.

关键词： Best approximation pair Pad′e approximant pair Orlicz spaces.

A Nonstandard Lévy-Khintchine Formula and Lévy Processes

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Acta Mathematica Sinica,English Series 2008年第2期24卷 241-252页

作者： Siu ah NG School of Mathematical Sciences University of KwaZulu-Natal Pietermaritzburg 3209 South Africa

We use methods from nonstandard analysis to obtain a short and simple derivation of the Levy-Khintchine formula via an explicit construction of certain laws of the infinitesimal increments. Consequently, any arbitrary... 详细信息

关键词： Levy processes Levy-Khintchine formula nonstandard analysis infinitesimal hyperfinite

Synthesis of crosslinked polystyrene particles by seeded batch polymerization with monomer absorption

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Transactions of Nonferrous Metals Society of China 2011年第A01期21卷 153-159页

作者： Ki-Chang LEE Han-ah WI Department of Polymer Science and Engineering Engineering Research Institute Gyeongsang National University

A highly crosslinked, monodispersed polystyrene（PS） particle was prepared by a seeded batch dispersion polymerization with a monomer absorption method. Prior to polymerization, 1,9 lam monodispersed PS seed particles were treated under an optimum condition of monomer absorption. The effects of divinylbenzebe（DVB） concentration and polymerization temperature were examined for styrene（in PS seed）/styrene（in the second stage） mass ratio of 1：1 in the medium range of EtOH/water mass ratio of 100/0-80/20 and 2.3 μm uniform crosslinked PS particles containing 15%-20% （mass fraction） DVB were prepared at 60-70 ℃. The results show that monomer absorption before the second stage of polymerization is more effective to prepare highly crosslinked monodispersed PS particles.

关键词： crosslinked polystyrene particle seeded batch dispersion polymerization monomer absorption divinylbenzene (DVB)

Development of hyaluronic acid-based edible film for alleviating dry mouth

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Food Science and Human Wellness 2023年第2期12卷 371-377页

作者： Dong-Keon Kweon Jung-ah Han Jinwoo Bio Co. Ltd.Yongin 17111Korea Department of Food and Nutrition Sangmyung UniversitySeoul 03016Korea

For alleviating dry mouth symptoms,edible films based on hyaluronic acid(HA)with 3 different m(800,1200 and 2300 kDa)were prepared(800 F,1200 F and 2300 F,respectively),and the properties as well as effectiveness were *** concentration of each HA dispersion for film forming was set as 3.0%,1.5%or 1.0%,for the m800,1200 and 2300 kDa,respectively,based on the *** 800 F showed the highest thickness,tensile strength,and water vapor transparency,whereas obtained the lowest transparency and elongation at break among *** of the HA films showed safety against microorganism during 28 storage day at 40℃with 60%*** optimum site for film attachment in mouth was the palate,and800 F was the most effective for stimulating saliva secretion,eliciting a 38%increase compared to control(without film),tested by the elderly over 65 years *** the sensory test,800 F was also the most *** on above results,the edible films effectively stimulating saliva secretion could be produced with HA,and the physical,sensory characteristics as well as disintegration times of the film could be controlled by mand the dissolution concentration of HA.

关键词： Edible film Hyaluronic acid Saliva stimulating Tensile strength Thickness

Robotic-assisted microsurgery in andrology: a systematic review

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Asian Journal of Andrology 2023年第4期25卷 454-461页

作者： Konstantinos Douroumis Eleftherios Spartalis Konstantinos Stravodimos Panagiotis K levis Gerasimos Tsourouflis Dimitrios Dimitroulis Nikolaos I Nikiteas Hellenic Minimally Invasive and Robotic Surgery(MIRS)Study Group National and Kapodistrian University of AthensMedical SchoolAgiou Thoma 15bGoudiAthens 11527Greece First Department of Urology National and Kapodistrian University of AthensMedical SchoolAgiou Thoma 17GoudiAthens 11527Greece Second Department of Propaedeutic Surgery National and Kapodistrian University of AthensMedical SchoolAgiou Thoma 17GoudiAthens 11527Greece

Robot-assisted surgery is the gold standard of treatment in many fields of urology. In this systematic review, we aim to reportits usage in andrology and to evaluate any advantages. A systematic search of the PubMed and Cochrane Library databases wasconducted to identify articles referring to robotic-assisted microsurgery in andrology. The search strategy was in line with thePreferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines and the Cochrane Handbook. Thearticles were then reviewed by two authors. A qualitative analysis of the articles that met the inclusion criteria was ***-one articles that met the inclusion criteria were reviewed. The first results for robot-assisted vasovasostomy (RAVV) areencouraging as excellent patency rates, short operative times, and learning curves were achieved. Interestingly, patency rates weregreater in some case series for RAVV than for microsurgical vasovasostomy, with a statistically significant difference. In addition,robot has been shown to be of great use in bypassing fibrotic changes in cases of iatrogenic vasal injuries, difficulties encounteredwith traditional microsurgery. In addition, the feasibility of robot-assisted microsurgery has been proven for varicocelectomy andmicrosurgical denervation of the spermatic cord, with acceptable improvement in sperm parameters and pain, respectively. Thecurrent evidence suggests that there are potential advantages of the use of robots in andrology. However, for robotic surgery tobecome incorporated into the daily use of the andrologists, large, multicenter randomized trials are needed. As robotics systemsare becoming standard in urology practice, it is reasonable for one to believe that they will also find their place in andrology.

关键词： andrology male infertility robotic surgical procedures varicocele vasovasostomy

Digital exchange attributes and the risk of closure

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Blockchain(Research and Applications) 2023年第2期4卷 136-145页

作者： Seung ah Lee George Milunovich Department of Actuarial Studies and Business Analytics Macquarie UniversitySydneyNSW2109Australia

Presently,there are over 500 cryptocurrency exchanges worldwide and more than 19,700 different *** the fact that cryptocurrency trading is possible via private peer-to-peer transactions,more than 90%of trading occurs on organised exchanges,which provide convenience and ***,centralised cryptocurrency exchanges are regarded as high-value targets by criminals and are often victims of *** this paper,we investigate the risk of cryptocurrency exchange closures and develop predictive models to forecast which markets will close down and which ones will remain active using publicly available *** models perform well and reach a high level of classification *** trading volume,the availability of public information on exchange staff,exchange lifetime,and several cybersecurity features are identified as key attributes in predicting exchange ***,our models do not account for all sources of risk,e.g.,potential fraud and mismanagement of client funds committed by the exchanges themselves,and market participants are encouraged to carefully consider where and how they store their digital assets.

关键词： Cryptocurrency markets Digital exchange Closure Classification Predictive models

Studies on the flow and distribution of leukocytes in mesentery microcirculation of rats

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World Journal of Gastroenterology 1999年第3期5卷 231-234页

作者： Jiang Y Liu ah Zhao KS Mil Med Univ 1st Chinese PLA Lab Shock & Microcirculat Guangzhou 510515 Peoples R China

AIM To study the effect of leukocyteendothelium interaction (LEI) on the flow anddistribution of leukocytes in microcirculationunder physiological *** A microcirculation image multipleparameter computer analysis system (MIMPCAS)was used to study the flow and distribution ofleukocytes in mesentery microcirculation of ratsIn *** The difference of visible leukocyteflux (VLF) was as high as 131 times in thearterioles and venules with similar diameter andblood velocity. The visible leukocytes rolledalong the blood vessel wall as a" jerky"movement. The frequency distribution of thevisible leukocyte velocity (VLV) showed a "twopeak" Curve. The low peak value was at 10 pm/ s-- 15 pm/ s while the high peak fell between25 pm/ s-- 30 pm/ s. With the increase of diameterof venules, VLF increased while the VLVremained at the same level. With the increase ofRBC velocity, VLV trends to elevate and VLF tofal I *** The results herein might providea basic theory for the study on the mechanism ofLEI under physiological condition and novelmethods for the prevention and treatment of highLEI in many pathological

关键词： Studies on the flow and distribution of leukocytes in mesentery microcirculation of rats flow

The anti-tubercular activity of Melia azedarach L. and Lobelia chinensis Lour. and their potential as effective anti-Mycobacterium tuberculosis candidate agents

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Asian Pacific Journal of Tropical Biomedicine 2016年第10期6卷 830-835页

作者： Won Hyung Choi In ah Lee Department of Biomedical Science School of Medicine Kyung Hee University Department of Medical Zoology School of Medicine Kyung Hee University Department of Chemistry College of Natural Science Kunsan National University

Objective: To evaluate the anti-mycobacterial activity of Melia azedarach L.(M. azedarach) and Lobelia chinensis Lour.(L. chinensis) extracts against the growth of Mycobacterium tuberculosis(M. tuberculosis).Methods: The anti-M. tuberculosis activity of M. azedarach and L. chinensis extracts were evaluated using different indicator methods such as resazurin microtiter assay(REMA) and mycobacteria growth indicator tube(MGIT) 960 system assay. The M. tuberculosis was incubated with various concentrations(50–800 mg/m L) of the extracts for 5 days in the REMA, and for 4 weeks in MGIT 960 system ***: M. azedarach and L. chinensis extracts showed their anti-M. tuberculosis activity by strongly inhibiting the growth of M. tuberculosis in a concentration-dependent manner in the REMA and the MGIT 960 system assay. Particularly, the methanol extract of M. azedarach and n-hexane extract of L. chinensis consistently exhibited their effects by effectively inhibiting the growth of M. tuberculosis in MGIT 960 system for 4 weeks with a single-treatment, indicating higher anti-M. tuberculosis activity than other extracts,and their minimum inhibitory concentrations were measured as 400 mg/m L and 800 mg/m L, ***: These results demonstrate that M. azedarach and L. chinensis extracts not only have unique anti-M. tuberculosis activity, but also induce the selective antiM. tuberculosis effects by consistently inhibiting or blocking the growth of M. tuberculosis through a new pharmacological action. Therefore, this study suggests the potential of them as effective candidate agents of next-generation for developing a new anti-tuberculosis drug, as well as the advantage for utilizing traditional medicinal plants as one of effective strategies against tuberculosis.

关键词： Lobelia chinensis Lour. Melia azedarach L. MGIT 960 system Drug susceptibility Tuberculosis

Thermal Efficiency for Each Zone of a Solar Pond

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Chinese Physics Letters 2011年第10期28卷 281-283页

作者： BEZİR CİCEK Nalan ŞahİNŞENCAN Arzu Department of Physics Faculty of ScienceSuleyman Demirel UniversityTurkey Department of Mechanical Education Technical Education FacultySüleyman Demirel UniversityTurkey

A salt gradient solar pond with a surface area of 3.5×3.5 m^(2) and a depth of 2 m is *** collapsible covers are used to reduce thermal energy loss from the surface of the solar pond during the night and to increase the thermal efficiency of the pond solar energy harvesting during *** covers can be rotated between 0 and 180°by a controlled electric motor and has insulation and reflection *** thermal efficiency for each solar pond zone is investigated theoretically and experimentally.

关键词： properties insulation harvesting

FLT3 tyrosine kinase inhibitors synergize with BCL-2 inhibition to eliminate FLT3/ITD acute leukemia cells through BIM activation

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Signal Transduction and Targeted Therapy 2021年第6期6卷 1884-1894页

作者： Ruiqi Zhu Li Li Bao Nguyen Jaesung Seo Min Wu Tessa Seale Mark levis Amy Duffield Yu Hu Donald Small Department of Oncology Johns Hopkins University School of MedicineBaltimoreMDUSA Department of Hematology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina Department of Pathology Johns Hopkins University School of MedicineBaltimoreMDUSA Department of Pediatrics Johns Hopkins University School of MedicineBaltimoreMDUSA

Tyrosine kinase inhibitors(TKIs)targeting FLT3 have shown activity but when used alone have achieved limited success in clinical trials,suggesting the need for combination with other *** investigated the combination of FLT3 TKIs(Gilteritinib or Sorafenib),with Venetodax,a BCL-2 selective inhibitor(BCL-2i),on FLT3/ITD leukemia *** combination of a FLT3 TKI and a BCL-2i synergistically reduced cell proliferation and enhanced apoptosis/cell death in FLT3/ITD cell lines and primary AML *** also re-sensitized FLT3 TKI-resistant cells to Gilteritinib or Sorafenib treatment,mediated through MAPK pathway *** treatment alone dissociated BIM from MCL-1 but increased the binding of BIM to *** treatment enhanced the binding of BIM to MCL-1 but dissociated BIM from *** with the drugs together resulted in dissociation of BIM from both BCL-2 and MCL-1,with an increased binding of BIM to the cell death mediator BAX,leading to increased *** findings suggest that Venetoclax mitigates the unintended pro-survival effects of FLT3 TKI mainly through the dissociation of BIM and BCL-2 and also decreased BIM *** study provides evidence that the addition of BCL-2i enhances the effect of FLT3 TKI therapy in FLT3/ITD AML treatment.

关键词： FLT3 drugs alone treatment BIM