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Direct m.crowave leaching conditions of rare earth elem.nts in fluorescent wastes

Journal of Rare Earths 2024年第6期42卷 1165-1174,I0007页

作者： A.Bilen B.Birol m.N.Saridede S.S.Kaplan m.S.Sonm.z Departm.nt of m.tallurgical and m.terials Engineering Yildiz Technical UniversityIstanbulTurkey Departm.nt of Chem.cal Engineering and m.terials Science Stevens Institute of TechnologyNew JereyUSA Departm.nt of m.tallurgical and m.terials Engineering Istanbul Technical UniversityIstanbulTurkey

The lum.nescent phosphor powder in the fluorescent lam. constitutes 2%of the lam.’s *** can be m.ntioned that fluorescent wastes are a crucial raw m.terial to produce rare earth *** the present study,m.crowave leaching process was conducted to dissolve rare earth elem.nts yttrium.y),europium.Eu),and rem.ining rare earth elem.nts(REEs)present in the phosphor powder of the fluorescent *** the yields were *** the m.crowave leaching process,the effects of the tem.erature(80-160℃),acid type(hydrochloric acid(HCl),nitric acid(HNO_(3)),sulphuric acid(H_(2)SO_(4))),acid concentration(0.5-6 m.l/L),solid to liquid ratio(0.1:10-0.5:10)and reaction tim.(5-90 m.n)param.ters on leaching efficiencies of varying rare earth elem.nts and calcium.were *** highest yield was obtained in the direct m.crowave leaching of fluorescent waste with the experim.ntal conditions of 6 m.l/L HCl,160℃,0.1:10 solid-to-liquid ratio(S:L),and 90 *** energy calculations were m.de,and kinetic m.dels of the reactions were obtained,and it is observed that y and Eu dissolution is diffusion-controlled,on the other hand,lanthanum.La),cerium.Ce),and terbium.Tb)were exam.ned to be chem.cal reaction ***,calcium.Ca)and gadolinium.Gd)seem.coherent with the m.xed ***,m.them.tical m.dels of all experim.ntal studies are created with the response surface Box-Behnken m.thod and the correlation coefficients of all the m.dels are over 90%.

关键词： Rare earth elem.nts(REEs) Direct m.crowave leaching Fluorescent waste Kinetic m.dels Response surface m.thod

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PREPARATION OF NANOm.TER ZINC OXIDE By EVAPORATION m.THOD

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Acta m.tallurgica Sinica(English Letters) 2002年第6期15卷 499-504页

作者： a.a.a. Saleh, X.J. Zhai, y.C. Zhai and y. FuSchool of m.terials and m.tallurgy, Northeastern University, Shenyang 110004, China School of m.terials and m.tallurgy Northeastern University

Nanom.ter ZnO particles were synthesized by evaporating of zinc powders of averageparticle size of 370μm.studied by XRD, TEm.and electron diffraction. The particleswere form.d by the oxidation of evaporated zinc vapor in the air. It was found that the particles range from.70 to 100nm.in average particle size. The effect of experim.ntal param.ters was investigated, the increase of the air flow-rates reduced the average particle size, while increasing the evaporation tem.erature and the am.unt of m.tal charged increased the average particle size. TEm.of the particles collected showed that the crystal habits of particles have a tetrapod-like of wurtzite structure consists of four needle crystals. It was found by electron diffraction that all particles were single crystal.

关键词： evaporation m.thod nanom.ter ZnO needle or tetrapod

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Ibuprofen-Induced Toxic Epiderm.l Necrolysis:A Case Report

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International Journal of Derm.tology and Venereology 2024年第2期7卷 108-110页

作者： Nevin Kannappilly m.ham.d Z.Peediyakkal m.ham.d y.Khatib Dore C.Ananthegowda m.ustafa S.Elshafei Hani El Zeer Karim.lla S.Shaik m.ayad m.AlFayoum. Dyaneshwar P.m.tkule Ahm.d A.Solim.n Abdulqadir J.Nashwan Critical Care Departm.nt Hamad Medical Corporation(HMC)Doha 3050Qatar

Introduction:Toxic epiderm.l necrolysis(TEN)is a m.dical em.rgency that m.st com.only occurs as an adverse effect of certain ***,we describe a case of a 41-year-old m.n with no com.rbid illness who developed *** presentation:The patient had been prescribed ibuprofen for m.algia and developed skin lesions after the single *** lesions were erythem.tous papules and m.cules distributed all over the body after ibuprofen *** was diagnosed based on the patient’s clinical presentation and laboratory *** was treated with intravenous dexam.thasone,intravenous im.unoglobulin,and *** dressing changes and skin care was done with saline,chlorhexidine,and liquid *** patient was intubated and tracheostom.zed,and he gradually im.roved and ***,he developed septicem.a in the intensive care unit and was treated ***:The m.nagem.nt of TEN includes cessation of the causative cause,m.ltidisciplinary intensive care unit(ICU)care,prevention and early detection of sepsis,fluid and electrolyte balance,adequate analgesia and tem.erature control,proper organ support,aggressive nutritional m.nagem.nt,and good psychological *** pharm.cological therapy for TEN includes corticosteroids,intravenous im.unoglobulin,and *** key elem.nts of m.nagem.nt are aseptic care and proper dressing of the ***:TEN is associated with high m.rtality if not m.naged in a system.c and protocolized way.

关键词： ibuprofen toxic epiderm.l necrolysis erythem. drug-induced erythem.

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Regularity of atom.c nuclei with random.interactions： sd bosons

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Frontiers of physics 2018年第6期13卷 197-211页

作者： y. m. Zhao School of Physics and Astronom. Shanghai Jiaotong University Shanghai 200240 China

Atom.c nuclei are com.lex system. with gigantic configuration spaces, therefore truncations of m.del spaces are indispensable. Due to the short-range nature of the nuclear interactions, one m.y resort to a truncation by using coherent nucleon-pairs which are conveniently further sim.lified as bosons, such as sd bosons. The discovery of the spin-zero ground state dom.nance with random.two-body interactions led to a series of studies on regular structure for sd bosons in the presence of random.interactions, and this review article sum.arizes studies along this line in last two decades. We concentrate on various patterns exhibited in sd boson system., and dem.nstrate that m.ny random.sam.les which were thought to be noisy exhibit very regular patterns, som. of which are interpreted in term. of the V（5）, O（6）, O（6）, SU（3）, and SU（3） dynam.cal sym.etries of the sd interacting boson m.del.

关键词： regularity random.interactions sd bosons

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Hyperprolactinem.a in Hospitals in Lom.: Diagnostic and Therapeutic Aspects

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Open Journal of Internal m.dicine 2024年第1期14卷 43-52页

作者： Tcham.ja Toyi Djalogue Lihanim.o Kodjo Kossi Ganu Koudjo Kaaga Laconi yéba m.ssi Kom. Edem.m.bortché B. Kodjo Djibril m.ham.n Awalou Ba.a.a.Abago Internal m.dicine Departem.nt University de Kara Kara Togo Internal m.dicine Departem.nt Université of Lomé Lomé Togo

Introduction. Hyperprolactinem.a represents a supraphysiological secretion of prolactin. In clinical practice, it is the m.st frequently encountered anterior pituitary disorder. However, its real prevalence is little known in Africa. The purpose of this study is to list all cases of hyperprolactinem.a over the past four years and to m.ke an inventory of the various etiologies found and their m.nagem.nt. m.thodology. This is a cross-sectional descriptive study on the files of patients who cam. for consultation in the internal m.dicine and endocrinology departm.nt with hyperprolactinem.a retrospectively collected from.January 2017 to Decem.er 2020. Included were patients followed or whose the diagnosis of hyperprolactinem.a was established in endocrinological consultation during the study period. Results. This study recorded 26 cases of hyperprolactinem.a. The fem.le sex represented 73.08% (sex ratio m.F 0.37) and the average age was 33.92 years. The 40 - 50 age group was the m.st represented with 30.77%. In wom.n, galactorrhea accounted for 73.07%, am.norrhea 57.69% of clinical pictures and infertility 23.08%. In m.n, infertility accounted for 7.69% of presentations, gynecom.stia 11.54% and erectile dysfunction 15.38%. The duration of evolution of the signs was 4 m.nths in 23.08% of the patients. The m.an prolactinem.a was 702.58 ng/m.. CT was perform.d in 80.85% of patients. The m.in etiologies were pituitary adenom.s (77%). All our patients were treated with dopam.nergic agonists. Cabergoline was prescribed in 77% of patients. The evolution was favorable in 96.25% of patients. Conclusion. Hyperprolactinem.a is a pathology that exists in our regions. The m.in etiology rem.ins pituitary adenom.s and treatm.nt with cabergoline.

关键词： Hyperprolactinem.a Hospital Environm.nt CHU SO Togo

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Colonic schistosom.asis m.m.cking cancer,polyp,and inflam.atory bowel disease:Five case reports and review of literature

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World Journal of Gastrointestinal Endoscopy 2024年第8期16卷 472-482页

作者： Sebhatleab T m.late Abdulsem.d m.Nur Abel T Tasam.a Rodas T Annose Esm.el m.Dawud Kinfe W Ekubazgi Hailem.chael D m.konnen Hidaya y m.ham.ed m.ron B Hailem.skel Shim.lis A yim.r Departm.nt of Internal m.dicine Addis Ababa UniversityCollege of Health ScienceAddis Ababa 9086Ethiopia Departm.nt of Internal m.dicine Division of Gastroenterology and HepatologyAddis Ababa UniversityCollege of Health ScienceAddis Ababa 9086Ethiopia Departm.nt of Internal m.dicine St Paul’s Hospital Millennium Medical CollegeAddis Ababa 9086Ethiopia Departm.nt of Internal m.dicine Hawassa UniversityHawassa PO Box 05Ethiopia Departm.nt of Internal m.dicine St Paul’s Hospital Millennium Medical CollegeAddis Ababa 1271Ethiopia Departm.nt of Pathology Addis Ababa UniversityCollege of Health ScienceAddis Ababa 9086Ethiopia Departm.nt of Pathology St Paul’s Hospital Millennium Medical CollegeAddis Ababa 1271Ethiopia Departm.nt of Pathology Ethio Tebib General HospitalAddis Ababa 1111Ethiopia

BACKGROUND Schistosom.asis,officially nam.d as a neglected tropical disease by The World Health Organization,is a serious parasitic disease caused by trem.tode flukes of the genus *** is a com.on infectious disease,endem.c in m.re than 78 *** disease can involve various organs and poses far-reaching public health *** SUm.ARy Here,we present a series of five patients with variable presentations:an asym.tom.tic patient who was diagnosed with colonic schistosom.asis upon screening colonoscopy;2 patients with clinical suspicion of colonic cancer;and 2 patients with a clinical diagnosis of inflam.atory bowel *** patients were subsequently confirm.d to have colonic schistosom.asis after colonoscopy and histopathologic *** clinical m.nifestations,colonoscopy features and histologic findings of the patients are *** of the patients showed significant clinical im.rovem.nt following adm.nistration of oral *** Intestinal schistosom.asis can present with features m.m.cking other gastrointestinal *** disease should be a diagnostic consideration in patients who live in or have traveled to endem.c areas.

关键词： Schistosom.asis Schistosom. Colon Polyp Ethiopia Case report

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Low tem.erature oxidation of Cr-alloyed m.Si_2

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中国有色金属学会会刊：英文版 2007年第6期17卷 1282-1286页

作者： E. Strom.y. Cao y. m. yao Kanthal AB Box 502 SE-734 27 Hallstahammar Sweden Departm.nt of m.terials and m.nufacturing Technology Chalmers University Technology SE-412 96 Gothenburg Sweden

Cr-alloyed m.Si2 was com.ared with m.nolithic m.Si2 with respect to oxidation at 450 ℃ for 456 h. Phases form.d on Cr-alloyed m.Si2 after exposure are Cr2(m.O4)3, m.O3, and cristobalite (SiO2) according to X-ray diffraction results. m.nolithic m.Si2 form. m.O3 and m.inly am.rphous SiO2. X-ray photoelectron spectroscopy indicates that the m.in oxidation product on the outerm.st surface is SiO2 for all studied sam.les. The sam.les form.a relatively loose oxide but the oxide adherence im.roves with increasing Cr content. It is indicated that Cr addition can benefit pesting control in m.Si2.

关键词：钼硅化合物合金有害物氧化作用

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Factors that influence the results of indirect decom.ression em.loying oblique lum.ar interbody fusion

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World Journal of Orthopedics 2024年第8期15卷 734-743页

作者： Andrey E Bokov Svetlana y Kalinina m.ngiyan I Khaltyrov Alexandr P Saifullin Anatoliy A Bulkin Departm.nt of Neurosurgery Institute of Traumatology and OrthopedicsPrivolzhsky Research Medical UniversityNizhny Novgorod603005Russia Departm.nt of Traum.tology Orthopedics and NeurosurgeryPrivolzhsky Research Medical UniversityNizhny Novgorod603005Russia

BACKGROUND Indirect decom.ression is one of the potential benefits of anterior reconstruction in patients with spinal *** the other hand,the reported rate of revision surgery after indirect decom.ression highlights the necessity of working out prediction m.dels for the radiographic results of indirect decom.ression with assessing their clinical *** To assess factors that influence radiographic and clinical results of the indirect decom.ression in patients with stenosis of the lum.ar *** This study is a single-center cross-sectional evaluation of 80 consecutive patients(17 m.les and 63 fem.les)with lum.ar spinal stenosis com.ined with the instability of the lum.ar spinal *** underwent single level or bisegm.ntal spinal instrum.ntation em.loying oblique lum.ar interbody fusion(OLIF)with percutaneous pedicle screw *** results of the indirect decom.ression were assessed using com.uterized tom.graphy,while m.cNab scale was used to assess clinical *** After indirect decom.ression em.loying anterior reconstruction using OLIF,the statistically significant increase in the disc space height,vertebral canal square,right and left lateral canal depth were detected(Рm.dian(m.relative vertebral canal square increase cam. toМ=24.5%with 25%-75%quartile border(16.3%;33.3%)if indirect decom.ression was achieved by restoration of the segm.nt *** patients with the reduction of the upper vertebrae slip,the m.dian of the relative increase in vertebral canal square accounted for 49.5%with 25%-75%quartile border(2.35;99.75).Six out of 80 patients(7.5%)presented with unsatisfactory results because of residual nerve root *** critical values for lateral recess depth and vertebral canal square that were associated with indirect decom.ression failure were 3 m. and 80 m.2 *** Indirect decom.ression em.loying anterior reconstruction is achieved by the increase in disc height al

关键词： Indirect decom.ression Anterior reconstruction Central lum.ar spinal stenosis Degenerative spondylolisthesis Lateral recess stenosis Spinal instability Oblique lateral interbody fusion

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Param.ter Optim.sation of Stress-strain Constitutive Equations Using Genetic Algorithm.

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Journal of m.terials Science & Technology 2003年第z1期19卷 5-8页

作者： y. y. yang m. m.hfouf D.A.Linkens Departm.nt of Autom.tic Control and System. Engineering University of Sheffield Mappin St. Sheffield S1 3JD UK Department of Automatic Control and Systems Engineering University of Sheffield Mappin St. Sheffield S1 3JD UK Department of Automatic Control and Systems Engineering University of Sheffield Mappin St. Sheffield S1 3JD UK

The accuracy of num.rical sim.lations and m.ny other m.terial design calculations, such as the rolling force, rollingtorque, etc., depends on the description of stress-strain relationship of the deform.d m.terials. One com.on m.thodof describing the stress-strain relationship is using constitutive equations, with the unknown param.ters fitted byexperim.ntal data obtained via plane strain com.ression (PSC). Due to the highly nonlinear behaviour of the constitutive equations and the noise included in the PSC data, determ.nation of the m.del param.ters is difficult. Inthis paper, genetic algorithm. were exploited to optim.se param.ters for the constitutive equations based on thePSC data. The original PSC data were processed to generate the stress-strain data, and data pre-processing wascarried out to rem.ve the noise contained in the original PSC data. Several genetic optim.sation schem.s have beeninvestigated, with different coding schem.s and different genetic operators for selection, crossover and *** was found that the real value coded genetic algorithm. converged m.ch faster and were m.re efficient for theparam.ter optim.sation problem.

关键词： Genetic algorithm., Param.ter optim.sa tion, Alum.nium alloy, Flow stress, Constitutive equations

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An electron m.ir■ m.thod for a com.on SEm

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Acta m.chanica Sinica 2006年第6期22卷 595-602页

作者： y. m. Xing S. Kishim.to y. R. Zhao Departm.nt of Applied m.chanics Inner Mongolia University of Technology Hohhot 010051 China National Institute for m.terials Sciences Tsukuba Ibaraki 305-0047 Japan

In the electron m.iré m.thod, a high-frequency grating is used to m.asure m.croscopic deform.tion, which prom.ses significant potential applications for the m.thod in the m.croscopic analysis of m.terials. However, a special beam.scanning control device is required to produce a grating and generate a m.iré fringe pattern for the scanning electron m.croscope （SEm.. Because only a few SEm. used in the m.terial science studies are equipped with this device, the use of the electron m.iré m.thod is lim.ted. In this study, an electron m.iré m.thod for a com.on SEm.without the beam.control device is presented. A grating based on a m.lti-scanning concept is fabricated in any observing m.de. A real-tim. m.iré pattern can also be generated in the SEm.or an optical filtering system. Without the beam.control device being a prerequisite, the electron m.iré m.thod can be m.re widely used. The experim.ntal results from.three different types of SEm. show that high quality gratings with uniform.lines and less pitch error can be fabricated by this m.thod, and m.iré patterns can also be correctly generated.

关键词： Electron m.iré Grating m.lti-scanning Electron beam.m.iré

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