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Investigational growth factors utilized in animal models of spinal fusion: Systematic review

World Journal of Orthopedics 2019年第4期10卷 176-191页

作者： Ethan cottrill A Karim Ahmed Noah Lessing Zachary Pennington Wataru Ishida Alexander Perdomo-Pantoja Sheng-fu Lo Elizabeth Howell christina Holmes c Rory Goodwin Nicholas Theodore Daniel m Sciubba Timothy F Witham Department of Neurosurgery The Johns Hopkins Hospital Department of Neurosurgery Duke University Medical Center

BAcKGROUND Over 400000 Americans annually undergo spinal fusion surgeries, yet up to 40%of these procedures result in pseudoarthrosis even with iliac crest autograft, the current "gold standard" treatment. Tissue engineering has the potential to solve this problem via the creation of bone grafts involving bone-promoting growth factors(e.g., bone morphogenetic protein 2). A broad assessment of experimental growth factors is important to inform future work and clinical potential in this area. To date, however, no study has systematically reviewed the investigational growth factors utilized in preclinical animal models of spinal *** To review all published studies assessing investigational growth factors for spinal fusion in animal models and identify promising agents for *** We conducted a systematic review of the literature using Pubmed, Embase,cochrane Library, and Web of Science databases with searches run on may 29 th,2018. The search query was designed to include all non-human, preclinical animal models of spinal fusion reported in the literature without a timespan limit. Extracted data for each model included surgical approach, level of fusion,animal species and breed, animal age and sex, and any other relevant characteristics. The dosages/sizes of all implant materials, spinal fusion rates,and follow-up time points were recorded. The data were analyzed and the results reported in tables and text. PRISmA guidelines were followed for this systematic *** Twenty-six articles were included in this study, comprising 14 experimental growth factors: AB204(n = 1); angiopoietin 1(n = 1); calcitonin(n = 3);erythropoietin(n = 1); basic fibroblast growth factor(n = 1); growth differentiation factor 5(n = 4), combined insulin-like growth factor 1 +transforming growth factor beta(n = 4); insulin(n = 1); NELL-1(n = 5); noggin(n= 1); P-15(n = 1); peptide B2 A(n = 2); and secreted phosphoprotein 24(n = 1).The fusion rates of the current gold sta

关键词： Spinal fusion Growth factor Pseudoarthrosis Systematic review

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Do aeolian deposits and sand encroachment intensity shape patterns of vegetation diversity and plant functional traits in desert pavements?

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Journal of Arid Land 2023年第6期15卷 667-694页

作者： m'hammed BOUALLALA Souad NEFFAR Lyès BRADAI Haroun cHENcHOUNI Laboratory of Saharan Natural Resources Faculty of Sciences and TechnologyUniversity of Ahmed DraiaAdrar 01000Algeria Department of Nature and Life Sciences Faculty of Exact Sciences and Nature and Life SciencesUniversity of TebessaTebessa 12002Algeria Laboratory Water and Environment University of TebessaTebessa 12002Algeria Laboratory of Saharan Bioresources Preservation and Valorization Faculty of Nature and Life SciencesUniversity of Kasdi MerbahOuargla 30000Algeria Department of Forest management Higher National School of ForestsKhenchela 40000Algeria Laboratory of Natural Resources and management of Sensitive Environments University of Oum-El-BouaghiOum-El-Bouaghi 04000Algeria

The effects of sand encroachment on composition,diversity,and functional patterns of vegetation in drylands are rarely studied,and yet addressing these aspects is important to deepen our understanding of the biodiversity *** study aimed to investigate the effect of sand encroachment on plant functional biodiversity of desert pavements(gravel deserts)in the Sahara Desert of *** were sampled and analyzed in three desert pavements with different levels of sand encroachment(LSE)and quantity of aeolian deposits(low,LLSE;medium,mLSE;and high,HLSE).Within the sample-plot area(100 m^(2)),density of every plant species was identified and total vegetation cover was *** taxonomic and functional diversity were analyzed and compared between *** showed that 19 plant species in desert pavements were classified into 18 genera and 13 *** and Poaceae were the most important *** species Anabasis articulata(Forssk)*** LLSE desert pavements with 11 species,whereas Thymelaea microphylla coss.&Durieu ex *** calobota saharae(c&D)Boatwr.&van Wyk were dominant species of desert pavements with mLSE(14 species)and HLSE(10 species),*** highest values of species richness and biodiversity were recorded in desert pavements with mLSE,while low values of these ecological parameters were obtained in desert pavements with *** pavements with LLSE were characterized with the highest values of species *** communities were dominated by chamaephytes,anemochorous,arido-active,and competitive stress-tolerant *** increase in LSE along the gradient from LLSE to HLSE induced significant changes in plant community variables including decreases in plant density,plant rarity,lifeform composition,morphological type,and aridity *** pavements with HLSE favor the degradation of vegetation and trigger biodiversity erosion.

关键词： desert pavements hot and arid rangeland plant diversity land degradation sand encroachment plant functional trait Sahara Desert

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Producing Pesta,a delivery system for biocontrol agents,by twin-screw extrusion

Producing Pesta,a delivery system for biocontrol agents,by t...

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International conference:Technology Transfer in Biological control:From Research to Practice

作者： D.J.DAIGLE W.J.cONNIcK m.LOVISA K.WILLIAmS c.D.BOYETTE m.WATSON USDA ARSSRRCP.O.Box 19687New OrleansLA 70179USA

"Pesta" granules in which fungal propagules are encapsulated in a wheat gluten matrix were prepared in pound quantities by twin-screw extrusion. The *** these granules were compared to the *** laboratory *** the dough formulation of wheat flour,clay filler,fungus,and water,low water concentration reduced the viability of colletotrichum

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Simultaneously Enhancing Strength, Ductility and corrosion Resistance of a martensitic Stainless Steel via Substituting carbon by Nitrogen

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Acta metallurgica Sinica(English Letters) 2023年第5期36卷 705-716页

作者： Fuyang Li Jialong Tian Huabing Li L.m.Deineko Zhouhua Jiang School of metallurgy Northeastern UniversityShenyang110819China National metallurgical Academy of Ukraine 4Haharina Ave.Dnipro49600Ukraine

Two martensitic stainless steels of 2cr12Ni6 type hardened and tempered at 773 K have been studied:the first with 0.2%carbon content and the second with partial replacement of carbon by nitrogen(c0.1N0.1)in the first *** is found that the partial substitution of carbon with nitrogen contributed to an increase in ductility and strength of the steel,presumably due to the formation of more dispersive ***,the addition of nitrogen suppressed the precipitation of carbonitrides,so that the solid solution strengthening effect of c0.1N0.1 did not decrease significantly after tempering *** addition,the partial replacement of carbon by nitrogen contributed to improved ability against pitting corrosion(Pc)in chloride-containing medium(3.5%Nacl at 303 K).The higher resistance to Pc of tempered nitrogen-containing steel is apparently due to the lower content of massive carbonitrides,especially the reduced aggregation at grain *** leads to a lower acidity and aggressiveness of the test solution near the sample surface due to the accumulation of NH4^(+) ammonium ions in *** a result of nitrogen addition,exception for cr_(23)c_(6) and Vc,cr_(2)N and(cr,V)N type precipitates have also been found in c0.1N0.1 steel and this is consistent with the thermodynamic calculation *** conclusion,substituting carbon by nitrogen in traditional martensitic stainless steel could realize the simultaneous improvement of multiple properties of martensitic stainless *** result provides a promising composition optimization route to develop novel martensitic stainless steels.

关键词： martensitic stainless steel Strength and ductility Pitting carbonitrides

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Forty Years of Air Temperature change over Iran Reveals Linear and Nonlinear Warming

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Journal of meteorological Research 2022年第3期36卷 462-477页

作者： majid KAZEmZADEH Zahra NOORI Sadegh JAmALI Abdulhakim m.ABDI Faculty of Natural Resources University of Tehran77871-31587KarajIran Department of Technology and Society Lund UniversitySE-22100LundSweden centre for Environmental and climate Science Lund UniversitySE-22362LundSweden

Spatiotemporal analysis of long-term changes in air temperature is of prime importance for climate change research and the development of effective mitigation and adaptation *** there are considerable studies on air temperature change across the globe,most of them have been on linear trends and time series analysis of nonlinear trends have not received enough ***,spatiotemporal patterns of monthly and annual mean(Tmean),maximum(T_(max)),and minimum(T_(min))air temperature at 47 synoptic stations across climate zones in Iran for a 40-yr period(1978–2017)are analyzed.A polynomial fitting scheme(Polytrend)is used to both monthly and annual air temperature data to detect trends and classify them into linear and nonlinear(quadratic and cubic)*** significant(non-significant)trends in Tmean,T_(max),and T_(min) across all climate zones are 41.1%(58.9%),34.1%(65.9%),and 46%(54%),*** highest magnitude of increasing trends is observed in the annual T_(min)(0.47℃decade−1)and the lowest magnitude is for the annual T_(max)(0.4℃decade−1).Across the country,increasing trends(=37.2%)have higher spatial coverage than the decreasing trends(=3.2%).Warming trends in Tmean(65.3%)and T_(min)(73.1%)are mainly observed in humid climate zone while warming trends in T_(max) are in semi-arid(43.9%)and arid(34.1%)*** change with a positive trend is predominant in all Tmean(56.7%),T_(max)(67.8%),and T_(min)(71.2%)and for both monthly and annual ***,the linear trends have the highest warming rate in annual T_(min)(0.83℃decade^(−1))and Tmean(0.46℃decade^(−1))whereas the nonlinear trends have the highest warming rate in annual T_(max)(0.52℃decade^(−1)).The linear trend type is predominant across the country especially in humid climate zones whereas the nonlinear trends(quadratic and cubic)are mainly observed in the arid climate *** study highlights nonlinear changes and spatiotemporal trends in air temperature in Iran an

关键词： linear trends nonlinear trends time series analysis air temperature Polytrend Iran

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俄马钢连铸中间包吹氩保护工艺

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世界钢铁 2009年第4期9卷 55-56页

作者： С Н Ушаков T c maсaльский c B Горосткин Д В Юречко m A Богатов 马芳马格尼托哥尔斯克钢铁公司

由于中间包采用透气水口、长水口、塞棒及挡渣墙吹氩保护工艺,钢中点状不均匀类缺陷率减少了0.000 3%,钢中夹渣类缺陷率减少了0.020%,粗大颗粒夹杂类缺陷造成的板坯废品率减少了0.003 2%,有效地降低了钢水连铸中的板坯缺陷,创造了可观... 详细信息

由于中间包采用透气水口、长水口、塞棒及挡渣墙吹氩保护工艺,钢中点状不均匀类缺陷率减少了0.000 3%,钢中夹渣类缺陷率减少了0.020%,粗大颗粒夹杂类缺陷造成的板坯废品率减少了0.003 2%,有效地降低了钢水连铸中的板坯缺陷,创造了可观的经济价值。

关键词：连铸中间包吹氩保护非金属夹杂板坯缺陷

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自动补偿温漂的直流放大器

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宇航计测技术 1989年第6期8卷 75-77页

作者： R.c.S.Freire m.Abignoli A.m.N.Lima G.S.Deep 阎军

本文介绍了一种用普通运放构成的自动补偿温漂的直流应变电桥放大电路。放大器的工作分两步,一是自动补偿,二是放大输入信号。输入补偿是通过开关使电桥的激励源周期切换到零电位实现的,切换频率约为100Hz。因此,限定输入信号的最高频率... 详细信息

本文介绍了一种用普通运放构成的自动补偿温漂的直流应变电桥放大电路。放大器的工作分两步,一是自动补偿,二是放大输入信号。输入补偿是通过开关使电桥的激励源周期切换到零电位实现的,切换频率约为100Hz。因此,限定输入信号的最高频率为8Hz。放大器的增益为5000,当温度变化40℃时,测得输出电压漂移约1mV。

关键词：直流放大器自动补偿温漂

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Enhancement of photocatalytic and photoelectrochemical properties of TiO_(2) nanotubes sensitized by SILAR-Deposited PbS nanoparticles

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Journal of materiomics 2020年第1期6卷 62-69页

作者： A.Hajjaji S.Jemai A.Rebhi K.Trabelsi m.Gaidi A.N.Alhazaa m.A.Al-Gawati m.A.El Khakani B.Bessais Laboratoire de Photovoltaique Centre de Recherches et des Technologies de L’EnergieTechnopole de Borj-CedriaBP 952050Hammam-LifTunisia Institut National de La Recherche Scientifique INRS-EnergieMateriaux et Telecommunications1650Blvd.Lionel-BouletVarennesQCJ3X-1S2Canada center of Advanced materials Research Research Institute of Sciences and Engineering University of SharjahPO Box 27272SharjahUnited Arab Emirates Research chair for Tribology Surface and Interface SciencesDepartment of Physics and AstronomyCollege of ScienceKing Saud UniversityRiyadhSaudi Arabia King Abdullah Institute for Nanotechnology(KAIN) King Saud UniversityRiyadhSaudi Arabia School of Design Engineering Universitat Politecnica de ValenciaCamide VeraSpain

The aim of this work is to improve the photocatalytic and photoelectrochemical properties of TiO_(2) nanotubes(TiO_(2)-NTAs)by sensitizing them with PbS nanoparticles(NPs)prepared by the Successive Ionic Layer Adsorption and Reaction method(SILAR).The microstructure,surface morphology,phase composition and optical properties of the prepared structure were characterized using X-ray diffraction(XRD),scanning electron microscopy(SEm),transmission electron microscopy(TEm and High-resolution mode HRTEm)and X-ray photoelectron spectroscopy(XPS).The TiO_(2) NTAs were loaded by PbS NPs,which contents increase by increasing the number of SILAR *** PbS NPs,which have a size in the order of ~20 nm,were found to be uniformly distributed in the TiO_(2) NTAs without damaging the tubular ordered *** photocatalytic activity of the PbS/TiO_(2) NTAs system,toward Amido Black(AB),showed significant enhancement compared to the bare untreated TiO_(2) *** 30 SILAR deposition cycles the PbS-NPs/TiO_(2) NTAs structure is able to remove 75% of BA under simulated solar light,considerably higher than the 40% removal obtained with unloaded TiO_(2) NTAs.A significant improvement of the Photoelectrochemical(PEc)efficiency has been also demonstrated for the PbS-NPs/TiO_(2) NTAs hybrid *** improvement is mainly related to visible-light harvesting and reduced recombination of photo-generated electron-hole pairs due to the synergistic effect of the heterojunction and to the wellorganized morphology of the TiO_(2) NTAs.

关键词： TiO_(2)nanotubes PbS nanoparticles Amido black degradation Photoelectrochemical performance

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乳腺癌局部肿瘤分期:数字乳腺摄影与数字乳腺摄影加断层成像组合的对比

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国际医学放射学杂志 2019年第4期 485-486页

作者：陈萍 m.Bahl N.Pinnamaneni S.mercaldo A.m.mccarthy c.D.Lehman Department of Radiology Institute for Technology Assessment and Department of Medicine Massachusetts General Hospital

摘要与仅用数字乳腺摄影相比,数字乳腺摄影(Dm)和数字乳腺断层成像(DBT)的结合(Dm+DBT)提高了癌症检出率。然而,关于DBT作为已知乳腺癌分期中数字乳腺摄影辅

关键词：数字乳腺摄影乳腺癌肿瘤分期断层成像

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Physical aspects of anisotropic compact stars in f(T,T) gravity with off diagonal tetrad

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chinese Physics c 2021年第8期45卷 190-205页

作者： m.Zubair Allah Ditta G.Abbas Rabia Saleem Department of mathematics COMSATS University IslamabadLahore CampusLahorePakistan Department of mathematics The Islamia University of BahawalpurBahawalpurPakistan

This study addresses the formation of anisotropic compact star models in the background of f(T,T)gravity(where T and T represent the torsion and trace of the energy momentum tensor,respectively).f(T,T)gravity is an extension of the f(T)theory,and it allows a general non-minimal coupling between T and *** this setup,we apply Krori and Barua's solution to the static spacetime with the components ξ=Br^(2)+c and ψ=Ar^(2).To develop viable solutions,we select a well-known model f(T,T)=αT^(m)+βT+Ф(where α and β are coupling parameters,and Ф indicates the cosmological constant).We adopt the conventional matching of interior and exterior space time to evaluate the unknowns,which are employed in the stellar *** present a comprehensive discussion on the stellar properties to elaborate the anisotropic nature of compact stars corresponding to well-known models:PSRJ1416-2230,4U1608-52,cenX-3,EXO1785-248,and *** physical analysis,it is observed that the solution of compact spheres satisfy the acceptability criteria,and its models behave optimally and depict stability and consistency,in accordance with f(T,T)gravity.

关键词： f(T,T)gravity compact stars stellar models

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