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Infectious causes of fever of unknown origin in developing countries: An international ID-IRI study

Materials Sciences and Applications（材料科学与应用期刊） 2023年第2期

作者： Fatin M.Elmagbari Ahmed N.Hammouda Hamdi A.M.bennour Rashd M.EL-Ferjani younis o.ben amer

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Journal of Intensive Medicine 2024年第1期4卷 94-100页

作者： Hakan Erdem Jaffar AAl-Tawfiq Maha Abid Wissal ben Yahia George Akafity Manar Ezzelarab Ramadan Fatma amer Amani El-Kholy Atousa Hakamifard Bilal Ahmad Rahimi Farouq Dayyab Hulya Caskurlu Reham Khedr Muhammad Tahir Lysien Zambrano Mumtaz Ali Khan Aun Raza Nagwa Mostafa El-Sayed Magdalena Baymakova Aysun Yalci Yasemin Cag Umran Elbahr Aamer Ikram Department of Infectious Diseases&Clinical Microbiology Gulhane School of MedicineTurkish Health Sciences UniversityAnkaraTurkey Specialty Internal Medicine and Quality and Patient Safety Department Johns Hopkins Aramco HealthcareDhahranSaudi Arabia Division of Infectious Diseases Indiana University School of MedicineIndianapolisINUSA Department of Infectious Diseases Farhat Hached University HospitalIbn El Jazzar Medical SchoolUniversity of SousseSousseTunisia Internal Medicine Department Farhat Hached University HospitalIbn El Jazzar Medical SchoolUniversity of SousseSousseTunisia Cape Coast Teaching Hospital Cape CoastGhana Medical Parasitology Faculty of MedicineSuez UniversitySuezEgypt Department of Medical Microbiology and Immunology Faculty of MedicineZagazig UniversityZagazigEgypt Department of Clinical Pathology Faculty of MedicineCairo UniversityGizaEgypt Department of Infectious Diseases School of MedicineIsfahan University of Medical SciencesIsfahanIran Department of Infectious Diseases Kandahar University Medical FacultyTeaching HospitalKandaharAfghanistan Department of Infectious Diseases Mohammed Bn Khalifa Bn Salman Alkhalifa Specialist Cardiac CenterAwaliBahrain Department of Infectious Diseases and Clinical Microbiology Faculty of MedicineIstanbul Medeniyet UniversityIstanbulTurkey Department of Pediatric oncology National Cancer Institute–Cairo UniversityChildren Cancer Hospital EgyptCairoEgypt Department of Medicine Federal General HospitalIslamabadPakistan Institute for Research in Medical Sciences and Right to Health(ICIMEDES) Scientific Research Unit(UIC)Faculty of Medical Sciences(FCM)National Autonomous University of Honduras(UNAH)TegucigalpaHonduras National Institute of Health IslamabadPakistan Shaukat Khanum Memorial Cancer Hospital and Research Center LahorePakistan Medical Parasitology Department Research Institute of OphthalmologyGizaEgypt Department of Infectious Diseases Military Medical AcademySofiaBulgaria Department of Infecti

Background:Fever of unknown origin(FUo)in developing countries is an important dilemma and further research is needed to elucidate the infectious causes of ***:A multi-center study for infectious causes of FUo in lower middle-income countries(LMIC)and lowincome countries(LIC)was conducted between January 1,2018 and January 1,*** total,15 participating centers from seven different countries provided the data,which were collected through the Infectious DiseasesInternational Research Initiative *** adult patients with confirmed infection as the cause of FUo were included in the *** severity parameters were quick Sequential organ Failure Assessment(qSoFA)≥2,intensive care unit(ICU)admission,vasopressor use,and invasive mechanical ventilation(IMV).Results:A total of 160 patients with infectious FUo were included in the ***,148(92.5%)patients had community-acquired infections and 12(7.5%)had hospital-acquired *** most common infectious syndromes were tuberculosis(TB)(n=27,16.9%),infective endocarditis(n=25,15.6%),malaria(n=21,13.1%),brucellosis(n=15,9.4%),and typhoid fever(n=9,5.6%).Plasmodium falciparum,Mycobacterium tuberculosis,Brucellae,Staphylococcus aureus,Salmonella typhi,and Rickettsiae were the leading infectious agents in this study.A total of 56(35.0%)cases had invasive procedures for *** mean qSoFA score was 0.76±0.94{median(interquartile range[IQR]):0(0–1)}.ICU admission(n=26,16.2%),vasopressor use(n=14,8.8%),and IMV(n=10,6.3%)were not ***,38(23.8%)patients had at least one of the severity *** mortality rate was 15(9.4%),and the mortality was attributable to the infection causing FUo in 12(7.5%)***:In LMIC and LIC,tuberculosis and cardiac infections were the most severe and the leading infections causing FUo.

关键词： Developing countries Fever of unknown origin Infection

Synthesis and Crystal Structure of Potassium Crown Ether Tetrathiosquarate

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Journal of Chemistry and Chemical Engineering 2012年第5期6卷 470-474页

作者： Johannes Beck younis o. ben amer Institute of Inorganic Chemistry University of Bonn Bonn D-53121 Germany Department of Chemistry University of Garyounis Benghazi-Libya

Slow diffusion of diethylether into a concentrated solution of K2C454.H20 and two equivalents of 18-crown-6 in pyridine affords dark orange crystals of bis（potassium{18-crown-6}）（3-cyclobutene-1,2-dithione-3,4-dithiolate） [K（C12H2406）]2（CnS4）. The crystal structure determination （monoclinic, P 2t/n, a = 12.2095（8） A, b = 11.3263（8） A, c = 14.0552（7） A, fl = 101.032（3）~, Z = 2） shows the presence of C4S42 - ions with almost undistorted D4h symmetry having C-C bond lengths of 1.442（10） A and 1.478（8） A and C-S bond lengths of 1.651（8） A and 1.664（7） A. Since the K＋ ions are shielded in a half-spherical way by the crown ether ligands, the crystal structures is built of centrosymmetric molecular entities [（18-crown-6）K（C4S4）K（18-crown-6）]. The K＋ ions have eight of coordination number, C4S42- acts as a chelating and bridging ligand towards two K＋ with K-S distances of 3.434（2） A and 3.380（2） A.

关键词： Tetrathiosquarate crown ether potassium ion complex formation crystal structure.

Synthesis and Characterisation of Cr(III) and Co(II) Schiff Base Complexes

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Materials Sciences and Applications 2023年第2期14卷 53-62页

作者： Fatin M. Elmagbari Ahmed N. Hammouda Hamdi A. M. bennour Rashd M. EL-Ferjani younis o. ben amer Department of Chemistry Faculty of Science University of Benghazi Qar-Yunis Benghazi Libya

Co(II) and Cr(III) metal complexes of Schiff bases were synthesized from the condensation reaction between 4-(dimethylamino.benzaldehyde and 4-amino-3-hydroxy-naphthalene-1-sulfonic acid. Their structures were investigated by elemental analysis, molar conductance measurements, infrared spectroscopy, electronic spectroscopy, and 1HNMR spectroscopy. The elemental analysis data suggested a 1:1 [M:L] ratio for the complexes. The molar conductance measurements of the complexes indicate their electrolytic nature in DMSo as a solvent. The absorption bands in the electronic spectra verified an octahedral environment around the metal ions in the complexes.

关键词： Schiff Base Ligand Complexes 1HNMR Spectra

Synthesis and Characterization of Cr(III) &Fe(II) Bis(2-Methoxybenzylidene)Biphenyl-4,4'-Diamine Complexes

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open Journal of Inorganic Chemistry 2020年第1期10卷 6-14页

作者： younis o. ben amer Rehab N. El-Daghare Ahmed N. Hammouda Rashd M. El-Ferjani Fatin M. Elmagbari Chemistry Department Faculty of Science Benghazi University Benghazi Libya

Bis(2-methoxybenzylidene)biphenyl-4,4'-diamine Schiff base was prepared by the reaction of benzidine and o-methoxy benzaldehyde 1:2 reaction. Two complexes of this ligand with Cr(III) and Fe(II) were prepared. All prepared compounds were analysed using elemental analysis, IR, 1H NMR and mass spectroscopy. The formation of proposed structures, including the free ligand and complexes were confirmed.

关键词： Schiff Base Complexes Spectroscopy Bis(2-Methoxybenzylidene)Biphenyl-4 4'-Diamine

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热塑性蜂窝板的平压性能分析

包装学报 2022年第2期14卷 93-97页

作者：李杨贲小军袁建东沈达泉徐伟伟郭红亮江苏正威新材料股份有限公司江苏如皋226500

为了解热塑性蜂窝板的平压性能,先分析热塑性蜂窝板的平压变形机理,得到平压强度公式,进而分析结构参数和环境温度对蜂窝板平压强度的影响。蜂窝板平压试验结果与理论分析一致。随着蜂窝芯孔径比、边长、高度的增加,平压强度减小;随着... 详细信息

为了解热塑性蜂窝板的平压性能,先分析热塑性蜂窝板的平压变形机理,得到平压强度公式,进而分析结构参数和环境温度对蜂窝板平压强度的影响。蜂窝板平压试验结果与理论分析一致。随着蜂窝芯孔径比、边长、高度的增加,平压强度减小;随着壁板厚度增加,平压强度增加。

关键词：蜂窝板平压强度孔径比边长壁板厚度