Showing 25,241 - 25,260 results of 25,410 for search '"comparative studies"', query time: 0.93s Refine Results
  1. 25241

    Comparison between signet-ring cell carcinoma and non-signet-ring cell carcinoma of the stomach: clinicopathological parameters, epidemiological data, outcome, and prognosis—a coho... by Haithem Zaafouri, Raja Jouini, Nizar Khedhiri, Fatma Khanchel, Mona Cherif, Meryam Mesbahi, Aziz Daghmouri, Wiem Mahmoudi, Soumaya Akremi, Meriam Sabbah, Yazid Benzarti, Dhafer Hadded, Dalila Gargouri, Mourad Ben Bader, Anis Ben Maamer

    Published 2022-07-01
    “…Methods This was a retrospective study of 123 patients admitted for gastric adenocarcinoma to Habib Thameur Hospital in Tunis over 11 years from January 2006 to December 2016. A comparative study was performed between 2 groups: the SRCC group with 62 patients and the non-SRCC (non-signet-ring cell carcinoma of the stomach) with 61 patients. …”
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    Article
  2. 25242

    Specyficzne warianty języków narodowych: polski północnokresowy i niemiecki nadwołżański. Perspektywy badań porównawczych by Jolanta Mędelska

    Published 2015-12-01
    “… Particular variations of national languages: Polish Northern Kresy dialect and Volga German. Prospects for comparative study The author addresses particular language codes: Polish Northern Kresy dialect and Volga German. …”
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    Article
  3. 25243

    The Features of COVID-19’s Course and the Efficacy of the Gam-COVID-Vac Vaccine in Patients with Paroxysmal Nocturnal Hemoglobinuria by Vadim Ptushkin, Evgeniya Arshanskaya, Olga Vinogradova, Dmitry Kudlay, Eugene Nikitin

    Published 2023-09-01
    “…A retrospective, observational, cohort, non-comparative study was performed to assess the course of COVID-19 as well as the safety and efficacy of the Gam-COVID-Vac (Sputnik V) vaccine in patients with paroxysmal nocturnal hemoglobinuria (PNH). …”
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    Article
  4. 25244

    دراسة نتائج علاج ضخامة القرينات الأنفية بالكي الكهربائي والليزر by مصطفى إبراهيم, محمد البريدي, سحاب العلي

    Published 2019-01-01
    “…At the same time, Co2 Laser is performed on 25 patients of both sexes, whose ages range between 20 - 25, at Almouasate Educational Hospital affiliated Damascus University. Then , a comparative study is conducted between the two ways through clinical follow-up of patients at several periods postoperative . …”
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    Article
  5. 25245

    COVID-19: Percepción de riesgo y estrategia de afrontamiento en trabajadores / COVID-19: Risk perception and coping strategy in workers by Antonio Torres Valle, Ana Teresa Carbonell Siam, Laura Elena Suazo Torres, Ulises Jáuregui Haza, José de Jesús Rivero Oliva, Manuel Perdomo Ojeda

    Published 2022-05-01
    “…Objective: To quantify the perception of risk associated with the pandemic and establish its relationship with the derived social behavior, through a comparative study in a multinational sample of workers. …”
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    Article
  6. 25246
  7. 25247

    Numerical investigation of wind load effects due to downburst and atmospheric boundary layer flow over building by Sim, Tze Siang

    Published 2023
    “…The present work also investigates (A) The wind load effect of a concave roof on high-rise building, (B) Comparative study on the hybrid LES/RANS approach for modelling turbulent boundary layer flow around a 1:1:2 building. …”
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    Thesis-Doctor of Philosophy
  8. 25248

    Gallium-V antireflective nanostructures by metal-assisted chemical etching for photodetector application by Liao, Yikai

    Published 2024
    “…Increasing either K2S2O8 or HF concentration leads to increasing etching rate. Comparative study shows that Pt layer plays crucial role in boosting etching of GaN in MacEtch process. …”
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    Thesis-Doctor of Philosophy
  9. 25249

    Attribute control charts for effective statistical process control by Salah Haridy Gad Haridy

    Published 2014
    “…The results of the quantitative comparative study reveal that the new charts developed in this thesis have achieved a significant improvement in detection effectiveness. …”
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    Thesis
  10. 25250

    A proteomics and metabolomics analysis of the mechanism of lipid accumulation in yeast by Shi, Jiahua

    Published 2015
    “…Using iTRAQ-coupled two-dimensional liquid chromatography mass spectrometry (2D LC-MS/MS) analysis and gas chromatography-mass spectrometry, we report here a time course comparative study of protein profile and metabolite profile of oleaginous yeast strains. …”
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    Thesis
  11. 25251

    Parameters identification and power conversion of a photovoltaic system by Soon, Charlie Jing Jun

    Published 2015
    “…Moreover, a transformer with a lower leakage inductance can be used which reduces the voltage drop across the dc-link. In a comparative study conducted between TZ-source inverter and the proposed sigma-Z-source inverter, it is found that the proposed topology uses less winding than the TZ-source inverter. …”
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    Thesis
  12. 25252

    Microelectromechanical force and tactile sensors for minimally invasive surgery by Han, Beibei

    Published 2015
    “…The performance of the SiNWs on the bio-inspired sensor and on the bare ring-shaped sensing element is comparatively studied by repeatability and hysteresis tests. …”
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    Thesis
  13. 25253

    Modeling, analysis and control of high-order switching power converters by Chincholkar, Satyajit Hemant

    Published 2017
    “…To address this issue, a detailed comparative study of two current-mode controllers (using the input and output inductor currents of the converter) is presented for some high-order dc-dc converters such as the positive output elementary Luo (POEL) converter and the 2-stage cascade boost converter. …”
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    Thesis
  14. 25254

    Development of chitosan based optical fiber chemical sensors by Ravikumar, Raghunandhan

    Published 2018
    “…Owing to the strong affinity between Ni2+ ions and histidine, the immobilized Ni2+ ions in the chitosan film were utilized as binding agents for the direct detection of hexa-histidine tagged microcin. A comparative study in relation to different target size was conducted: full proteins trypsin, bovine serum albumin (BSA) and human serum albumin (HSA), with high histidine content on their surface and His-MccS (peptide, 11.6 KDa), have been employed for sensor evaluation. …”
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    Thesis
  15. 25255

    Studies on the control of high-gain DC-DC boost converters by Jiang, Wentao

    Published 2018
    “…To address this, a comparative study of the adaptive current-mode controllers for the hybrid-type high-order dc-dc boost converter was carried out. …”
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    Thesis
  16. 25256

    Mothers of steel: the women of Um Gargur, an Eritrean refugee settlement in Sudan by Bright, N, Bright, Nancee Oku

    Published 1992
    “…While the M.Phil, thesis was a comparative study of Um Gargur and two other cases of resettlement in Africa, here I am concerned primarily with questions of gender, everyday life, and how processes of change and realignments of power impact upon women in displaced heterogeneous societies.…”
    Thesis
  17. 25257

    Telephone counselling for smoking cessation. by Stead, L, Hartmann-Boyce, J, Perera, R, Lancaster, T

    Published 2013
    “…We assessed statistical heterogeneity amongst subgroups of clinically comparable studies using the I² statistic. We considered trials recruiting callers to quitlines separately from studies recruiting in other settings. …”
    Journal article
  18. 25258

    Issues in data monitoring and interim analysis of trials. by Grant, A, Altman, D, Babiker, AB, Campbell, M, Clemens, F, Darbyshire, J, Elbourne, DR, McLeer, S, Parmar, M, Pocock, S, Spiegelhalter, D, Sydes, MR, Walker, A, Wallace, SA

    Published 2005
    “…Information about comparable studies should be included, although interaction with the DMCs of similar ongoing trials is controversial. …”
    Journal article
  19. 25259

    Leucaena Leucocephala : A new green biocomposite substrates for wireless applications / Ahmad Azlan Ab Aziz by Ab Aziz, Ahmad Azlan

    Published 2018
    “…The antenna design that used a UPB7030 substrate with three by three OCFA orientation gave a great performance with the gain measured at 7.98 dBi and directivity at 12 dBi. The comparative study on other substrates was performed using the BCFA structure with the measured gain results indicated by PP100 (4.77dBi), PB9010 (4.62dBi), PB8020 (4.0 dBi), PB7030 (0.9dBi), and PB6040 (0.1dBi). …”
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    Book Section
  20. 25260

    Synthesis of quinoxaline derivatives and their antibacterial activity against pathogenic bacteria by Khatoon, Hena

    Published 2023
    “…The compounds were synthesized using different solvent systems, dimethylformamide (DMF)/ potassium triphosphate (K3PO4), methanol (MeOH)/ triethylamine (Et3N), acetone/ 0.1N sodium hydroxide (NaOH), and dimethylformamide/potassium carbonate (DMF/ K2CO3), depending on the nucleophilicity of the mercaptan compounds. A comparative study was used to compare the efficiency of these solvent systems to synthesize the same target compounds regarding the reaction time, percentage yield, purity of the compounds, and benignity towards the environment. …”
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    Thesis