Određivanje učinka tekućeg stakla (SiO2) na stabilnost boje drva obojenoga prirodnim bojama

In this exploratory study, the effect of liquid glass (SiO2) treatment on color stability of wood stained by natural dyes was investigated. Mixing liquid glass with natural dyes produced durable, natural, and protective wood stain as expected. For natural dyes, Licorice (Glycyrrhiza glabra L.), Indigo (lsatis tinctoria L.) and pomegranate skin (Punica granatum L.) were chosen and their extracts were mixed with liquid glass and applied to Scots pine (Pinus sylvestris L.), chestnut (Castanea sativa Mill.) and mahogany (Khaya Ivorensis A. Chev.) specimens using immersion method. Coated wood specimens were tested to evaluate the protection degree of liquid glass + natural stains against discoloration using cold check test. The treated wood specimens were exposed to cold check test for different conditions; 1 h 50 °C (± 5), 1 h laboratory conditions, and 1 h -20 °C (± 2), for 20 cycles. As a result, the liquid glass treatment produced better performance against color change. However, for general definition, liquid glass was not found precisely effective on color stability.U provedenom je istraživanju ispitan učinak tekućeg stakla (SiO2) na stabilnost boje drva obojenoga prirodnim bojama. Miješanjem tekućeg stakla s prirodnim bojama napravljen je trajni prirodni i zaštitni premaz za drvo, kako se i očekivalo. Za prirodne boje odabrani su sladić (Glycyrrhiza glabra L.), indigo (lsatis tinctoria L.) i šipak (Punica granatum L.), a njihovi su ekstrakti pomiješani s tekućim staklom i metodom uranjanja naneseni na uzorke drva običnoga bora (Pinus sylvestris L.), kestena (Castanea sativa Mill.) i mahagonija (Khaya Ivorensis A. Chev.). Na tako obrađenim uzorcima drva, primjenom testa hladne provjere, istražen je zaštitni utjecaj premaza od tekućeg stakla i prirodne boje na promjenu boje obrađenih uzoraka drva. Obrađeni su drvni uzorci bili izloženi testu hladne provjere u različitim uvjetima: 1 h pri 50±5 °C, 1 h pri laboratorijskim uvjetima i 1 h pri -20±2 °C u 20 ciklusa. Rezultati istraživanja pokazali su da je obrada tekućim staklom imala pozitivan učinak na zaštitu boje drvnih uzoraka obojenih prirodnim bojama, odnosno da nije došlo do promjene boje. Međutim, općenito se može zaključiti da rezultati istraživanja nisu dali uvjerljiv dokaz učinkovitosti tekućeg stakla na stabilnost boje obojenog drva

Physician-reported ECOG-PS versus patient-reported (self) ECOG-PS: Which one is a better predictor of survival in cancer?

The aim of this study is to determine the discrepancy and agreement between Eastern Cooperative Oncology Group Performance Status (ECOG-PS) scores evaluated by doctors and patients and examine the factors that influence the performance evaluation of doctors and patients. This study is a prospective and descriptive case-control study. General, demographic, and oncologic data of the patients were collected. e-control study. General, demographic, and oncologic data of the patients were collected. Patient-Reported Outcomes Measurement Information System (PROMIS) anxiety and depression surveys were conducted to determine patients' levels of anxiety and depression, and at the same time, both the doctors and the patients were asked to determine their performance status. As a result, the discrepancy in performance evaluation between the patient and the doctor, the factors affecting this discrepancy, and its effect on progression and survival were examined. 277 patients were included. 146 (52.7%) were male, and 131 (47.3%) were female. The most common cancers were breast cancer (17.7%, n=49) and lung cancer (17.3%, n=48). It was found that the doctors' assessment of patient performance increased the progression risk by 3.1 times (HR: 3.080, 95% CI: 1,671-5,675) in ECOG-PS 2 compared to ECOG-PS 0 and by 5 times (HR: 4.980, 95% CI 1.405-17.646) in ECOG-PS 3 compared to ECOG-PS 0. Our study determined a weak agreement between the doctor and patient in terms of performance assessment. The most significant reason for this discrepancy was found to be due to the levels of depression or anxiety in patients. In conclusion, it was demonstrated that the performance evaluations determined by doctors are more accurate and meaningful in terms of progression and survival results compared to those determined by patients. [Med-Science 2023; 12(3.000): 827-52

THE ALBUMIN-GLOBULIN RATIO PREDICTING MORTALITY IN GASTRIC CARCINOMA

Introduction: The potential effects of serum albumin and albumin-globulin rate on survival were investigated in patients with gastric carcinoma