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Hematological profile of COVID-19 infected children before and after the spread of the Omicron variant in Istanbul

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Asian Pacific Journal of Tropical Medicine 2022年第12期15卷 551-557页

作者： Berkin Berk Akbeyaz AyŞe Karaaslan CerenÇetin Mehmet Tolga Köle Zeynep altaŞ Yasemin Akın Department of Pediatrics University of Health SciencesKartal Dr.Lütfi Kirdar City HospitalPediatric Hematology and Oncology IstanbulTurkey Department of Pediatric Infectious Diseases University of Health SciencesKartal Dr.Lütfi Kirdar City HospitalIstanbulTurkey Department of Pediatrics University of Health SciencesKartal Dr.Lütfi Kirdar City HospitalIstanbulTurkey Department of Public Health Marmara UniversityIstanbulTurkey

Objective:To examine the effect of the COVID-19 virus,especially the Omicron variant,on hematological parameters of hospitalized pediatric patients during the COVID-19 ***:Medical records of pediatric COVID-19 patients hospitalized at Kartal Dr.Lütfi K?rdar City Hospital in Istanbul,Turkey,between March 2020 and May 2022 were retrospectively reviewed to analyze data regarding demographics,SARS-Co V-2 infection polymerase chain reaction(PCR)test results,reversetranscriptase(RT)-PCR for other respiratory agents,duration of hospital stay,and hematological and biochemical laboratory ***:Out of 467 children with a confirmed diagnosis of SARSCo V-2 infection,94(20.1%)had Omicron infection and 373(79.9%)were infected with other variants;the Omicron group had younger patients than the remaining samples(P<0.001).The most frequent clinical symptoms in all children were cough(53.5%)and fever(32.3%),followed by vomiting(20.8%).Lung involvement in the Omicron group(10.6%)was significantly lower than in the remaining samples(29.8%)(P<0.001).Hemoglobin and lymphocyte levels were lower in the Omicron-infected group(both P<0.001),while prothrombin time,activated partial thromboplastin time,international normalized ratio,and D-dimer levels were significantly higher in this group(P<0.001,P<0.001,P<0.001,and P=0.023,respectively).In terms of lung involvement,those with lung involvement were significantly older(P<0.001).Conclusions:Although lung involvement was less common with Omicron infection,this group had greater hematological system involvement,such as anemia,lymphopenia,D-dimer elevation,and coagulation disorders.

关键词： COVID Children Omicron Hematologic findings

Conversion to reverse shoulder arthroplasty fifty-one years after shoulder arthrodesis:A case report

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World Journal of Orthopedics 2020年第10期11卷 465-472页

作者： Melissa N Dogger Annelies F van Bemmel Tjarco D W alta Arthur van Noort Department of Orthopedic Surgery Spaarne GasthuisHoofddorp 2134 TMNetherlands

BACKGROUND Patients with a shoulder arthrodesis generally experience restriction in range of motion and limitations in activities of daily *** addition,up to one-third of the patients deals with serious peri scapular *** conversion of a shoulder arthrodesis in a reverse shoulder arthroplasty(RSA)has been described as an effective treatment to achieve better function and decreased pain,although literature is *** present the case of a conversion from a painful shoulder arthrodesis to RSA,after a 51 years *** SUMMARY A 71-year-old male presented with severe peri scapular pain and limited function 51 years after shoulder *** workup showed a normal bone stock of the glenoid and an intact axillary nerve,but atrophic posterior part of the deltoid *** shoulder arthrodesis was successfully converted to *** months postoperative the patient was very *** has no pain at rest,nor with exercise and experienced definite improvements in activities of daily living,despite his limited range of *** Conversion from shoulder arthrodesis to a RSA can be performed safely,with a high chance of peri scapular pain relief;even after a longstanding arthrodesis.

关键词： Shoulder arthrodesis Conversion Reverse shoulder arthroplasty Electromyography Case report

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国外援助对喀麦隆经济增长的影响

国外援助对喀麦隆经济增长的影响

作者： Lizette Ngang neh 江西财经大学

学位级别：硕士

外国援助的影响的实证证据是混杂的,并产生了许多辩论。本文的目的是确定对外援助的有效性。这些受援国在接受援助后的情况是好是坏,这一问题回答了外国援助与经济增长之间的关系等问题。报告还审查了官方发展援助对喀麦隆国内生产总值... 详细信息

外国援助的影响的实证证据是混杂的,并产生了许多辩论。本文的目的是确定对外援助的有效性。这些受援国在接受援助后的情况是好是坏,这一问题回答了外国援助与经济增长之间的关系等问题。报告还审查了官方发展援助对喀麦隆国内生产总值增长的贡献方面的影响,以及外国援助是否有效以及如何有效。本研究使用向量自回归（VAR）模型,分析世界发展指标每年收集的数据。继最近的理论文献回顾,研究包括变量,如;国内储蓄;人口增长及其与援助的相互作用。本研究不同于现有的理论文献,因为它确定它是否已在短期和长期更有效（在促进经济增长）,并在一个特定的国家分析。从VAR的脉冲响应来看,对外援助与喀麦隆经济增长之间存在负相关关系。Johansen协整检验表明,对外援助与经济增长具有协整性,即二者具有长期的关系。该研究建议采取政策干预措施,从长远来看减少对外援的吸收,以减少负面影响。

关键词：对外援助经济增长 VAR VECM 喀麦隆

Baossi–Warack monogenetic volcanoes, Adamawa Plateau,Cameroon: petrography, mineralogy and geochemistry

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Acta Geochimica 2019年第1期38卷 40-67页

作者： Anicet Feudjio Tiabou Robert Temdjim Pierre Wandji Jacques-Marie Bardintzeff Vivian Bih Che Edith Ekatah Bate Tibang Caroline neh Ngwa Fran?ois Xavier Onana Mebara Remote Sensing Unit Faculty of Science Department of Geology University of Buea Department of Earth Sciences Faculty of Science University of Yaoundé 1 Laboratoire de Géologie Ecole Normale Supérieure de Yaoundé Univ.Paris-Sud Sciences de la Terre VolcanologiePlanétologie UMR CNRS 8148 GEOPS Bat.504 Université Paris-Saclay Higher Teacher Training College Department of GeologyUniversity of Bamenda Institute for Geological and Mining Research (IRGM) Institute for Geological and Mining Research (IRGM) Branch of Volcanologic and Geophysics Research (ARGV)

Three monogenetic cones in the Baossi–Warack area, Ngaoundéré, Adamawa Plateau forming part of the Cameroon Volcanic Line(CVL) are documented in this study. Basaltic lavas(<1 km^3) scattered around these vents and restricted volcaniclastic deposits were emplaced by Hawaiian and mild strombolian style eruptions. The lavas are porphyritic, mainly composed of olivine(chrysolite) and clinopyroxene(diopside and augite) phenocrysts and plagioclase(andesine) microphenocrysts. Accessory minerals include titano-magnetite and titano-hematite, nepheline,apatite and amphibole xenocrysts. Sanidine occurs in some samples and sodi-potassic albite in others. Some olivines and clinopyroxenes exhibit resorbed margins and thin reaction rims while plagioclase displays oscillatory zoning, and sieved textures as a result of magma mixing. Whole-rock geochemistry data indicates that the lavas are silica-undersaturated, composed of basanites and basalts, showing little compositional variations(SiO_2: 39.20 wt.%–48.01 wt.%,MgO: 5.29 wt.%–9.70 wt.%). Trace elements patterns of these lavas suggest they are enriched in LILE including Pb,probably due to crustal contamination. REE patterns suggest cogenetic magmas below Baossi 1 and Baossi 2 volcanoes,and distinct sources below Warack volcano and nearby *** lavas studied show affinity to high-μ(HIMU), enriched type Ⅰ(EM1) and Oceanic Island Basalt(OIB)-like mantle signatures and thus indicate a heterogeneous mantle source underneath the vents as noted at other monogenetic and polygenetic volcanoes along the CVL. Primary melts derived from low degrees of partial melting(0.5%–2%) and encountered low rates of fractionation, and crustal contamination coupled with magma mixing. These melts evolved independently through structural weaknesses in the basement.

关键词： Cameroon volcanic line Adamawa Plateau Volcanic field Monogenetic volcano Magma mixing Petrogenesis

Geothermobarometry of Askaoun Pluton in Ouzellarh-Sirwa Promontory (Central Anti-Atlas;Morocco)

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Open Journal of Geology 2012年第3期2卷 136-147页

作者： Abdeslam Toummite moha Ikenne El Hassane Beraaouz Applied Geology and Environmental Geology Laboratory Faculty of Sciences Ibn Zohr University Agadir Morocco

Rocks of the late Neoproterozoic Askaoun pluton (558 ± 2 Ma) located in the Ouzellarh-Sirwa promontory (Anti-Atlas) include magmatic microgranular enclaves (MMEs) ranging from rounded to ovoid in shape, dark and fine grained and generally 5 to 10 cm in size, some reaching a size of 50 cm. They are composed of microdiorite, quartz microdiorite and micromonzodiorite, whereas the felsic host rocks comprise mainly quartz-diorite and amphibole-biotite granodiorite based on mineralogical compositions. The mineral assemblage is similar to those described in their hosting granitoids but with different proportions. In this study composition of minerals is used to describe the nature of the magma and estimate the pressure, temperature and oxygen fugacity at which Askaoun pluton is emplaced. Based on chemistry of biotite Askaoun pluton formed from calc-alkaline magma. Compositions of plagioclase (An5 - An29);hornblende (Mg ≠= 0.59 - 0.65) and biotite (Mg ≠= 0.49 - 0.55) of MMEs are slightly distinct or similar to those of host rocks (An7-40;hbl Mg ≠= 0.64 - 0.69;Bi Mg ≠= 0.49 - 0.50) which suggest partial to complete equilibration during mafic-felsic magma interaction. The coexisting hornblende and plagioclase (hornblende-plagioclase thermometry), Al content in hornblende (aluminum-in-hornblende barometry) and the assemblage titanite-magnetite-quartz were used to constrain the P, T and fO2 during the crystallization of the parent magmas. The Askaoun pluton was emplaced at temperature ca. 504°C - 633°C and at pressure ca. 0.9 - 4.66 ± 0.6 Kbars (average depth = 6.5 km) from a highly oxidized magma (log fO2 = ?24.8 to ?19.2).

关键词： Askaoun Pluton MMEs Hornblende Thermobarometry Ouzellargh-Sirwa Promontory Anti-Atlas Morocco

A Novel Methodology to Design Miniaturized Regular Planar Inverted-F Antennas Based on Parametric Simulations

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Journal of Electromagnetic Analysis and Applications 2013年第7期5卷 302-311页

作者： Abdelhakim Elouadih Ahmed Oulad-Said moha Mrabet Hassani Department of Electrical and Telecommunications Engineering Royal Air Academy (ERA) Marrakesh Morocco Department of Physics Semlalia University of Sciences (FSSM) Marrakesh Morocco

This paper describes a novel methodology to design PIFA (Planar Inverted-F Antenna) antennas based on parametric simulations. The parameters considered in the parametric design are ground plan dimensions, height of radiating plate, feeding point position, shorting plate width and position. The choice of the parameters that must be varied independently or simultanously is important to design optimized antenna. The author studied two scenarios in precedent works [1,2]. He exposes here a third scenario of varing antenna parameters to design and simulate by HFSS (High Frequency Simulator Structure) simulator a probe-fed dual band PIFA for the use in GSM 850 band (824 MHz - 894 MHz) and PCS 1900 band (1850 MHz - 1990 MHz). The author compares the three scenarios and establishes a novel methodology to design optimized and miniaturized antennas mounted on mobile handsets.

关键词： PIFA HFSS Design Methodology

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谚语在家庭教育中的重要作用

内蒙古社会科学（蒙文版） 2023年第6期 157-160页

作者：阿拉塔不详

Design and Parametric Simulation of a Miniaturized PIFA Antenna for the PCS Band

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Wireless Engineering and Technology 2013年第2期4卷 105-111页

This paper describes the design and simulation by HFSS simulator of a probe-fed Planar Inverted-F Antenna (PIFA) for the use in PCS band [1850 MHz - 1990 MHz]. A methodology based on parametric simulations (parameters are ground plan dimensions, height of radiating plate, feeding point position, shorting plate dimensions and positioning) was used to design optimized antenna. The simulation allowed the characterization of the designed antenna and the computing of different antenna parameters like S11 parameter, resonant frequency, SWR, bandwidth impedance in feeding point, gain, 2D and 3D diagram pattern, Fields distribution. The simulation results are interesting and respect the mean PCS requirements.

关键词： PCS HFSS PIFA Patch Antenna Parametric Simulation

Design and Simulation by HFSS of a Slim UWB PIFA Antenna

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World Journal of Engineering and Technology 2013年第2期1卷 17-22页

作者： Abdelhakim Elouadih Ahmed Oulad-Said moha Mrabet Hassani Department of Electrical and Telecommu- nications Engineering Royal Air Academy (ERA) Marrakesh Morocco Department of Physics Semlalia University of Sciences (FSSM) Marrakesh Morocco

This paper describes the design and simulation by High Frequency Structure Simulator (HFSS) of a probe-fed Planar Inverted-F Antenna (PIFA) for the Ultra Wide Band (UWB) personal area networks. The slim antenna presents a height of 2 mm and a bandwidth of more than 766 MHz. This bandwidth was improved by etching a U-slot in the antenna patch. The bandwidth offered then by the antenna is 839 MHz around the resonant frequency of 9 GHz. The improvement of bandwidth was accompanied by decreasing in gain and radiation efficiency. The simulation allowed the characterization of the designed antenna and the computing of different antenna parameters like S11 parameter, resonant frequency, bandwidth, radiation efficiency, gain and diagram pattern. The results are very interesting and respect the Federal Communications Commission (FCC) requirements.

关键词： PIFA HFSS UWB