Search results for "ANOVA"
showing 10 items of 95 documents
Expression Profile of VEGF-C, VEGF-D, and VEGFR-3 in Different Grades of Endometrial Cancer
2019
Background:Vascular endothelial growth factor (VEGF)-C, -D, and VEGF receptor-3 are proteins characterized as crucial for tumor lymphangiogenesis. It is accompanied by angiogenesis during wound healing, but also in the neoplastic process. The research studies have shown that the lymphatic system plays a key role in the progression of carcinogenesis.Objective:The aim of this study was to evaluate changes in the expression of VEGF-C, VEGF-D and VEGFR-3 in different grades of endometrial cancer (G1-G3).Methods:The study included 45 patients diagnosed with endometrial cancer (G1=17; G2=15; G3=13) and 15 patients without neoplastic changes. The expression of VEGF-C, VEGF-D, and VEGFR-3 was asses…
Accuracy of five intraocular lens formulas in eyes with trifocal lens implant.
2020
Accuracy of intraocular lens (IOL) calculation formulas SRK/T, Hoffer Q, Holladay 1, Haigis and Barrett Universal II were compared in prediction of postoperative refraction for multifocal and implants using a single optical biometry device. The authors included 88 refractive lens exchange and cataract surgeries, with AcrySof IQ PanOptix implant (Alcon Laboratories, Inc.). All eyes were divided into three groups based on axial length (AL), group 1: 24.5 mm (6 eyes). The refractive prediction error (RPE) and mean absolute error (MAE) were calculated for 5 different formulas: SRK/T, Hoffer Q, Holladay 1, Haigis and Barrett Universal II. For eyes with the AL between 22 mm and 24.5 mm the greate…
Somatic copy number alterations are associated with EGFR amplification and shortened survival in patients with primary glioblastoma.
2019
Glioblastoma (GBM) is the most common malignant primary tumor of the central nervous system. With no effective therapy, the prognosis for patients is terrible poor. It is highly heterogeneous and EGFR amplification is its most frequent molecular alteration. In this light, we aimed to examine the genetic heterogeneity of GBM and to correlate it with the clinical characteristics of the patients. For that purpose, we analyzed the status of EGFR and the somatic copy number alterations (CNAs) of a set of tumor suppressor genes and oncogenes. Thus, we found GBMs with high level of EGFR amplification, low level and with no EGFR amplification. Highly amplified tumors showed histological features of…
Association of Non-Invasive Markers of Liver Fibrosis with HCV Coinfection and Antiretroviral Therapy in Patients with HIV
2019
Abstract The aim of this study was to assess the main effects and interaction between viral hepatitis C (HCV) coinfection and antiretroviral therapy (ART) by using a nonparametric ANOVA on direct and indirect markers of liver fibrosis in HIV-infected patients. The sample included 178 HIV patients aged from 23 to 65 (36% females). The following parameters were determined in blood of patients: hyaluronic acid, pro-matrix metalloproteinase-1, alanine aminotransferase, aspartate aminotransferase, and platelet count. The FIB-4 index was also calculated. The nonparametric ANOVA revealed no significant interaction between HCV coinfection and ART. This provides evidence for an independent contribut…
Nanotechnology against COVID-19: Immunization, diagnostic and therapeutic studies.
2021
The emergence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in early 2020 soon led to the global pandemic of Coronavirus Disease 2019 (COVID-19). Since then, the clinical and scientific communities have been closely collaborating to develop effective strategies for controlling the ongoing pandemic. The game-changing fields of recent years, nanotechnology and nanomedicine have the potential to not only design new approaches, but also to improve existing methods for the fight against COVID-19. Nanomaterials can be used in the development of highly efficient, reusable personal protective equipment, and antiviral nano-coatings in public settings could prevent the spread of SAR…
El valencià o català, llengua dins del diasistema occitanoromànic: fonamentació i revisió
2020
[Nota: En esta versió del resum, la cursiva ha hagut de ser substituïda per ' '] La posició del catalanovalencià dins del romanç és una qüestió que ocupa els lingüistes des dels inicis de la romanística i que continua oberta (múltiples estudiosos han fet recentment aportacions al debat). I no semblen compatibles dos idees de la 'communis opinio': el catalanovalencià és considerat una llengua independent però 'bessona' de l’occità; i, alhora, una 'llengua pont' entre el gal·loromanç i l’iberoromanç. Lamuela (2012) i altres autors parlen de «català i occità: un diasistema, dues llengües». Esta concepció sembla més completa i actual però no s’ha generalitzat en la lingüística catalanovalencian…
Sb2S3 nanovadu fotoelektriskās īpašības
2015
Perspektīvā nanovadus varēs izmantot sensoros, slēdžos, saules baterijās un citās optoelektriskajās ierīcēs, ņemot vērā to lielo virsmas un tilpuma attiecību. Pateicoties šai attiecībai, fizikālās īpašības nanoizmēros ir izteiktākas nekā makroskopiskos izmēros. Līdz šim nebija iespējams iegūt informāciju par Sb2S3 nanovadu fotoelektriskajām īpašībām. Darbā tika pētītas Sb2S3 nanovadu fotoelektriskās īpašības atkarībā no ierosinātās gaismas viļņu garuma, uzņemot I-V un fotostrāvas raksturlīknes. Darbā tika pētīta Sb2S3 nanovadu piemērotība dažādu optoelektrisko ierīču izstrādē. Anodētā alumīnija oksīda (AAO) matricā iekapsulēto nanovadu masīvu īpašības tika salīdzinātas ar individuālo nanova…
Ancova metode ar pielietojumu biostatistikā
2019
Šajā darbā tiks apskatīta mūsdienās lielu nozīmi ieguvusī ANCOVA metode, kuru izmanto medicīniskos pētījumos. Īss ieskats tiek aplūkots divām metodēm-ANOVA metodei un lineārajai regresijai,lai saprastu kā ANCOVA metode tika izveidota. Tas ir ļoti nozīmīgi, jo tās veido ANCOVA metodi. Kā arī teorijas beigās apskata ANCOVA metodi. Metodi pielietojot jāpārbauda dažādi nosacījumi, tāpēc tika izveidots algoritms, kas spēj apvienot visas nepieciešamās darbības, kā arī tiek pievienots R programmas kods. Darba nobeigumā tiks apskatīti arī praktiski piemēri, kuri spēs parādīt tās nozīmīgumu reālās dzīves situācijās.
On the Detection of Distributed Roughness on Ball Bearings Via Stator Current Energy: Experimental Results
2009
Using the Johnson-Neyman Procedure to Detect Item Bias in Personality Tests
2016
I present an alternative to a widely used item-bias analysis procedure known as the ANOVA method. The new method is based on the Johnson-Neyman procedure, which is a multiple regression-based technique with properties that can overcome the major weaknesses of the ANOVA method. I introduce the proposed procedure in a non-technical manner, provide an illustrative example, and suggest guidelines for empirical analysis that can be readily applied in personality research.