Influence of soil physicochemical properties on biometrical and physical features of persian oak wood

This article investigates the relationships between soil characteristics (physical and chemical) and wood properties of Persian oak in three different elevation sites. For this purpose, 27 trees were randomly chosen and cut in Zagros forests in western Iran. The test samples were prepared at the stem (breast height) to examine physical and biometrical properties. For each elevation site, four soil samples were obtained at a 0-20 cm soil depth under the canopy of each tree to measure soil properties, including clay, silt soil, sand soil, electrical conductivity, pH, nitrogen, phosphorus, potassium, and organic matter content. Then, the relationship of soil and wood properties was determined by principal component analysis. Results specified that there are a positive correlation between wood density and volumetric swelling with clay and available potassium. Moreover, the results revealed a positive correlation between fiber length, cell wall thickness, and fiber diameter with electrical conductivity, sand percentage, and total nitrogen content, respectively

Melissa officinalis extraction with nanoencapsulation By chitosan as an ecofriendly compound

The bioactive compounds in extracts are prone to degradation by oxidation, heat, or light. Nanoencapsulation is one of the best techniques to keep the properties of these chemical compounds. The aim of this study was the extraction of Melissa officinalis (MO) and nanoencapsulation of the extract via chitosan as a biodegradable polymer. In this research, extraction of MO was investigated using various extraction methods and nanoencapsulation with MO extract was carried out via ionic gelation technique. The effectiveness of the extracts was evaluated by measuring the total phenolic content (TPC), antioxidant activity, and extraction efficiency of the solid contents. The highest efficiency was achieved for microwave-assisted extraction with the utmost values in each parameter. (TSC) was 22.81% and amounts of the TPC and antioxidant activity were 311.94 mg Gallic acid and 36 mg diphenyl picryl hydrazyl (DPPH) per 1g of the plant, respectively.  Morphology study by field emission scanning electron microscopy (FE-SEM) indicated spherical shape nanoparticles with a diameter of 25nm. The size of the nanoparticles was evaluated by the Dynamic Light Scattering (DLS) technique for various concentrations of the used extracts in the encapsulation process. For 1.0, 3.0, and 5.0 mg /mL concentration, mean diameters were 24, 118, and 145 nm, respectively. Results indicated that microwave-assisted extraction was the best extraction method for MO and the encapsulation of MO extract could be created successfully with different particle sizes for the protection of bioactive compounds. Since MO is a beneficial herbal plant, the development of this research is recommended

The global burden of cancer attributable to risk factors, 2010-19 : a systematic analysis for the Global Burden of Disease Study 2019

Background Understanding the magnitude of cancer burden attributable to potentially modifiable risk factors is crucial for development of effective prevention and mitigation strategies. We analysed results from the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2019 to inform cancer control planning efforts globally. Methods The GBD 2019 comparative risk assessment framework was used to estimate cancer burden attributable to behavioural, environmental and occupational, and metabolic risk factors. A total of 82 risk-outcome pairs were included on the basis of the World Cancer Research Fund criteria. Estimated cancer deaths and disability-adjusted life-years (DALYs) in 2019 and change in these measures between 2010 and 2019 are presented. Findings Globally, in 2019, the risk factors included in this analysis accounted for 4.45 million (95% uncertainty interval 4.01-4.94) deaths and 105 million (95.0-116) DALYs for both sexes combined, representing 44.4% (41.3-48.4) of all cancer deaths and 42.0% (39.1-45.6) of all DALYs. There were 2.88 million (2.60-3.18) risk-attributable cancer deaths in males (50.6% [47.8-54.1] of all male cancer deaths) and 1.58 million (1.36-1.84) risk-attributable cancer deaths in females (36.3% [32.5-41.3] of all female cancer deaths). The leading risk factors at the most detailed level globally for risk-attributable cancer deaths and DALYs in 2019 for both sexes combined were smoking, followed by alcohol use and high BMI. Risk-attributable cancer burden varied by world region and Socio-demographic Index (SDI), with smoking, unsafe sex, and alcohol use being the three leading risk factors for risk-attributable cancer DALYs in low SDI locations in 2019, whereas DALYs in high SDI locations mirrored the top three global risk factor rankings. From 2010 to 2019, global risk-attributable cancer deaths increased by 20.4% (12.6-28.4) and DALYs by 16.8% (8.8-25.0), with the greatest percentage increase in metabolic risks (34.7% [27.9-42.8] and 33.3% [25.8-42.0]). Interpretation The leading risk factors contributing to global cancer burden in 2019 were behavioural, whereas metabolic risk factors saw the largest increases between 2010 and 2019. Reducing exposure to these modifiable risk factors would decrease cancer mortality and DALY rates worldwide, and policies should be tailored appropriately to local cancer risk factor burden. Copyright (C) 2022 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license.Peer reviewe

Comprehensive evaluation of hawthorn wood characteristics in relation to soil physicochemical properties

Physical properties such as dry wood density and volumetric swelling and fiber dimension parameters like fiber length, fiber diameter, and cell wall thickness were investigated. Soil properties including clay, silt soil, sand soil, electrical conductivity, pH, nitrogen, phosphorus, potassium, and organic matter content were determined. Pearson correlation was applied to explore the relationship between soil and wood properties. The mean wood density and volumetric swelling obtained were 0.71 g.cm-3 and 18%, respectively. Moreover, the mean values of fiber length, fiber diameter, and cell wall thickness were 0.80 mm, 20.50 μm, and 5.78 μm, respectively. Pearson correlation analysis showed a significant and positive correlation between wood dry density, cell wall thickness and volumetric swelling with percentage of silt, while a negative relationship between fiber length and percentage of silt were found

Investigating Subjective and Objective Quality of Life in Rural Areas: the Case of Tehran Province in Iran

peer reviewedGiven the importance of measuring QOL and the need for sound and efficient planning to improve and enhance the well-being of citizens, the objective of this study was to investigate QOL in rural areas of Tehran province, Iran. To this end, the relevant literature and secondary sources were used to develop a questionnaire whose validity was determined by a panel of experts. To the best knowledge of the authors, no similar study has assessed QOL in rural areas of Tehran province and none of them has compared objective and subjective QOL in rural areas. The findings showed that in terms of objective QOL, which indicates the minimum living standards, the villagers in Tehran province were in a moderate to high status, but in the subjective QOL, about 20% of the villagers were rated as poor. According to the findings, there was a significant difference between the residents of different rural areas of Tehran in terms of objective and subjective QOL at the 99% level, but the differences were not the same. This calls for policymakers’ attention. In this regard, policies should be put on the planning agenda to reduce rural migration by adopting a coordinated approach to rural and urban development and improving the physical and environmental conditions of rural communities to provide welfare services and reduce the disparity between urban and rural areas

Compare Client Satisfaction in the Public Health Posts and Outsourced Health Posts Affiliated to Qom University of Medical Sciences in 2014

Abstract Background: Client satisfaction as an important indicator to assess the quality of provided services has found a special place over the past few decades. The main purpose of this study is to compare the client satisfaction in the public health posts and outsourced health posts affiliated to Qom university of medical Sciences in 2014. Materials and Methods: This was a descriptive analytic (cross- sectional) study.The participants were 216 clients, who had referred to 10 public health posts and outsourced health posts of Qom province. Health posts were selected by cluster sampling from different urban areas and participants were selected by simple sampling methods. A researcher made questionnaire was used to measure the data on a 5-point Likert scale, which it's validity and reliability were confirmed by experts panel and Cronbach's alpha coefficient, respectively. After collection, the data were analyzed by SPSS 20, and descriptive statistical methods, Mann-Whitney test, chi-square, with 0.05 significant level. Results: Among 60 health posts, 20 health posts (33.33%) were outsourced and 40 (66.66%) were managed by the public sector. Results showed that in health centers outsourced , overall satisfaction of the child care and vaccinations and maternity care were respectively, 64.5 and 55.42 and 67.43 percent and in public health posts were respectively, 35.5 and 44.58 and 37.66 percent and this difference was significant. Client satisfaction in the public health posts of the vaccination (57.1%) compared with client satisfaction in the outsourced health posts (47.2%) was higher, also at public health posts, satisfaction of the scientific skill employees (55.1 percent) assigned to the outsourced health posts (44.9%) was even greater, that this difference was significant. Conclusion: Results of the present study showed that, there is a significant difference in satisfaction of clients in public health posts and outsourced health posts It seems necessary to pay special attention to employee training programs by managers and also considering the results of client satisfaction in performance appraisal of personnel in health care posts