scholarly journals THE EFFECT OF BIODEGRADATION/DEGRADATION OF DEGRADABLE PLASTIC MATERIAL ON COMPOST QUALITY

2013 ◽  
Vol 20 (4) ◽  
pp. 783-798
Author(s):  
Dana Adamcová ◽  
František Toman ◽  
Magdalena Vaverková ◽  
Jana Kotovicová
Keyword(s):  
Ph Value ◽  
Plastic Material ◽  
Class Ii ◽  
Class I ◽  
Organic Substances ◽  
Compost Quality ◽  
Composting Process ◽  
Laboratory Conditions ◽  
Accredited Laboratory

Abstract The objective of this study was to find out whether the quality of compost would change during the process of composting carrier bags claimed by manufacturers as compostable or biodegradable in terms of parameters stipulated in the standard ČSN 46 5735 Industrial composts. Eight samples were subjected to the composting process in laboratory conditions. The compost samples were analyzed in the accredited laboratory. All samples met parameters stipulated for Class II. Seven samples of the eight met parameters stipulated in the standard ČSN 46 5735 for Class I. The samples had no influence on compost characteristics: strength, content of water and salt, pH value, content of nutrients or proportion of organic substances; other components of the compost remained unchanged. Optical changes of the compost did not occur either.

scholarly journals Multivariate Analysis for Assessing Irrigation Water Quality: A Case Study of the Bahr Mouise Canal, Eastern Nile Delta

Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2537 ◽  
Author(s):  
Mohamed K. Abdel-Fattah ◽  
Sameh Kotb Abd-Elmabod ◽  
Ali A. Aldosari ◽  
Ahmed S. Elrys ◽  
Elsayed Said Mohamed
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Multivariate Analysis ◽  
Sustainable Agriculture ◽  
Irrigation Water ◽  
Class Ii ◽  
Class I ◽  
Landsat 8 ◽  
Irrigation Water Quality

Water scarcity and suitable irrigation water management in arid regions represent tangible challenges for sustainable agriculture. The current study aimed to apply multivariate analysis and to develop a simplified water quality assessment using principal component analysis (PCA) and the agglomerative hierarchical clustering (AHC) technique to assess the water quality of the Bahr Mouise canal in El-Sharkia Governorate, Egypt. The proposed methods depended on the monitored water chemical composition (e.g., pH, water electrical conductivity (ECiw), Ca2+, Mg2+, Na+, K+, HCO3−, Cl−, and SO42−) during 2019. Based on the supervised classification of satellite images (Landsat 8 Operational Land Imager (OLI)), the distinguished land use/land cover types around the Bahr Mouise canal were agriculture, urban, and water bodies, while the dominating land use was agriculture. The water quality of the Bahr Mouise canal was classified into two classes based on the application of the irrigation water quality index (IWQI), while the water quality was classified into three classes using the PCA and AHC methods. Temporal variations in water quality were investigated, where the water qualities in winter, autumn, and spring (January, February, March, April, November, and December) were classified as class I (no restrictions) based on IWQI application, and the water salinity, sodicity, and/or alkalinity did not represent limiting factors for irrigation water quality. On the other hand, in the summer season (May, June, July, August, and October), the irrigation water was classified as class II (low restrictions); therefore, irrigation processes during summer may lead to an increase in the alkalinity hazard. The PCA classifications were compared with the IWQI results; the PCA classifications had similar assessment results during the year, except in September, while the water quality was assigned to class II using the PCA method and class I by applying the IWQI. Furthermore, the normalized difference vegetation index (NDVI) around the Bahr Mouise canal over eight months and climatic data assisted in explaining the fluctuations in water quality during 2019 as a result of changing the crop season and agriculture management. Assessments of water quality help to conserve soil, reduce degradation risk, and support decision makers in order to obtain sustainable agriculture, especially under water irrigation scarcity and the limited agricultural land in such an arid region.

scholarly journals Composting of cow manure and rice straw with cow urine and its influence on compost quality

2018 ◽  
Vol 9 (2) ◽  
pp. 61-66 ◽  
Author(s):  
Thanh Phong Nguyen ◽  
Thi Ngoc Quynh Nguyen
Keyword(s):  
Rice Straw ◽  
Cow Manure ◽  
Compost Quality ◽  
Composting Process ◽  
Plastic Foil ◽  
Significant Difference ◽  
Cow Urine ◽  
Phosphorous Content ◽  
Set Up

The aim of this study was to assess the effect of composting process of cow manure and rice straw with application of cow urine and to evaluate the quality of composting products. There were two treatment piles, in which one pile was applied with cow urine every week and another pile without urine application. Each pile was set up by one tone cow manure and 500kg rice straw. The piles were half-covered by plastic foil to protect from rain and turned one a week. The composting duration lasted 8 weeks. The parameters such as temperature, pH, DM, density and nitrogen were monitored and observed during the 8-week period. The results showed that there was a significant difference in temperature, compost quality and duration between two piles with and without cow urine application. The application of cow urine increased significant nitrogen and phosphorous content and shortened the composting process. This study recommends that cow urine should be applied for composting process of cow manure and rice straw in order to increase the quality of compost. The final product was in the range of matured compost level and can be used directly for agriculture crop. Mục tiêu của nghiên cứu nhằm đánh giá ảnh hưởng đến chất lượng phân compost của việc bổ sung nước tiểu vào trong quá trình ủ phân từ nguyên liệu phân bò và rơm rạ. Thí nghiệm được thực hiện trên hai đống ủ phân, một đống ủ được bổ sung nước tiểu bò hàng tuần và một đống ủ không bổ sung nước tiểu bò như là một nghiệm thức đối chứng. Mỗi đống ủ được trộn 1 tấn phân bò và 500kg rơm. Đống ủ phân được đậy kín một nửa phía trên nhằm ngăn cản ảnh hưởng của mưa và được đảo trộn một lần mỗi tuần. Quá trình thí nghiệm được tiến hành trong 8 tuần. Các chỉ tiêu như nhiệt độ, pH, DM, mật độ và chất dinh dưỡng Nitơ và Phốt Pho được quan trắc trong thời gian ủ. Kết quả cho thấy có sự khác biệt đáng kể giữa hai đống phân ủ đối với các chỉ tiêu như nhiệt độ, chất lượng phân compost và thời gian ủ. Đống ủ phân có bổ sung nước tiểu có hàm lượng Nitơ và Phốt pho cao hơn và thời gian ủ ngắn hơn. Kết quả nghiên cứu khuyến cáo nên bổ sung nước tiểu bò cho quá trình ủ phân compost nhằm tăng hàm lượng chất dinh dưỡng cho sản phẩm phân compost. Sản phẩm sau quá trình ủ đạt mức độ phân hữu cơ và có thể sử dụng cho cây trồng.

scholarly journals Influence of Facial Morphology on Masticatory Function and Quality of Life in Elders Using Mandibular Overdentures: 3-Year Results

2021 ◽  
Vol 8 ◽  
Author(s):  
Anna Paula da Rosa Possebon ◽  
Alessandra Julie Schuster ◽  
Raissa Micaella Marcello-Machado ◽  
Ana Paula Pinto Martins ◽  
Luciana de Rezende Pinto ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Class Ii ◽  
Class I ◽  
Facial Morphology ◽  
Masticatory Performance ◽  
Mixed Effect ◽  
Masticatory Function ◽  
Facial Pattern ◽  
Oral Comfort

Background: Facial types may interfere in the oral health-related quality of life (OHRQoL) and masticatory performance of implant-retained mandibular overdenture (IMO) wearers.Purpose: Investigate the medium-term changes in the masticatory function (MF) and OHRQoL parameters of IMO users, as a function of facial pattern, anteroposterior skeletal discrepancy, and sex.Methods: Forty IMO users, most of them Caucasian (90%) with average age of 69.17 years were classified according to their facial pattern and antero-posterior discrepancy prior to rehabilitation. MF was evaluated by the multiple sieves method to determine the average particle size (X50), heterogeneity (B) and masticatory efficiency (ME, calculated as the percentage of material retained in the 5.6 and 2.8 mm sieves), using Masticatory performance (MP) and swallowing threshold (ST) tests. OHRQoL was measured by applying the dental impact on daily life (DIDL) questionnaire. The data were analyzed by Wilcoxon-paired tests to analyze changes in MF parameters over time, and mixed-effect multilevel regression models were employed to verify differences between groups.Results: Significant changes were still observed in the 3rd year for the ST test with improvements in B for Mesofacial and in time for Dolichofacial individuals, while ME_2.8 deteriorated for Brachyfacial participants. B values of Class I and male individuals improved and brachyfacial individuals still presented worse homogenization (B) than Mesofacial participants in both masticatory tests. Class II and III participants still showed improvements in ME_5.6 and time compared to Class I despite increases in X50. Class II individuals needed less cycles than Class I in the 3rd year. Brachyfacial participants scored lower in the Appearance domain than Mesofacial ones in the 3rd year. Dolichofacial participants and Class III patients scored lower in the Oral Comfort domain than Mesofacial and Class I, respectively. In addition, age influenced the Pain, Oral Comfort and General Performance domains in the 3rd year.Conclusions: Differences in facial morphology continue to influence the MF and OHRQoL outcomes in the 3rd year, and age influenced some OHRQoL domains. Brachyfacial individuals continue to benefit least from rehabilitation with IMO according to masticatory parameters.

scholarly journals Adjustments in the tetrazolium test methodology for assessing the physiological quality of chickpea seeds

2019 ◽  
Vol 41 (1) ◽  
pp. 7-12 ◽  
Author(s):  
Humberto Alencar Paraíso ◽  
Delacyr da Silva Brandão Junior ◽  
Ramon Ivo Soares Avelar ◽  
Candido Alves da Costa ◽  
Luan Souza de Paula Gomes ◽  
...  
Keyword(s):  
Seed Quality ◽  
Class Ii ◽  
Class I ◽  
Class Iii ◽  
Test Methodology ◽  
Physiological Quality ◽  
Tetrazolium Test ◽  
Class Iv

Abstract: Quick tests are essential tools to evaluate seed quality. The objective of this study was to adapt the methodology of tetrazolium test, by identifying the most suitable pre-conditioning parameters of imbibition temperature and duration, and tetrazolium solution concentrations, in order to assess the physiological quality of chickpea seeds. Also, this work proposed the separation of lots in classes, according to the viability and vigor of the seeds. Three lots of chickpeas (lot 1 - BRS Aleppo C1, lot 2 - BRS Aleppo basic, and lot 3 - Cicero) were evaluated. They were analyzed according to three combinations of imbibition temperature and duration (41 °C for 4 hours, 41 ºC for 6 hours, and 30 ºC for 18 hours) and two tetrazolium concentrations (0.1% and 0.5%). The imbibition at 41 °C for 4 or 6 hours, and at 30 ºC for 18 hours allowed clear visualization of injuries in the seeds after immersion in 0.1% tetrazolium solution. The intense coloration formed by the 0.5% solution of this salt prevented the differentiation of the types of damage. In addition, it was possible to separate the seeds into four classes: class I (viable and vigorous, without damages), class II (viable and vigorous, with superficial injuries), class III (viable and non-vigorous), and class IV (non-viable).

scholarly journals On Extra Risk: with some Particulars of the recent Investigation of the Mortality of Persons engaged in the Sale of Intoxicating Liquors

1901 ◽  
Vol 4 ◽  
pp. 116-147
Author(s):  
George M. Low
Keyword(s):  
Family History ◽  
Physical Condition ◽  
Class Ii ◽  
Class I ◽  
Practical Significance ◽  
Border Line ◽  
Fair Average

The lives which present themselves for assurance are, in the process of selection, divided into three main groups or classes:—I. Lives insurable at the ordinary rate.II. Lives insurable only at extra rates.III. Uninsurable lives.Although, in measuring what we call “extra risk,” only the subdivisions of Class II. are of practical significance, yet each of the three classes admits of almost indefinite subdivision in respect of the quality of the lives embraced in it.In the first class, some lives present no flaw of any kind in health, physical condition, occupation, or family history; others, at the further end of the scale, present flaws which bring them close to the border line of Class II.; and between those two extremes there is every degree of variation. Using terms that are not unfamiliar, Class I. may be subdivided into three distinct groups:—(a) Unexceptionable lives, presenting no unfavourable feature.(b) Good average lives, in which the personal or family history, or the physical condition, is not entirely faultless, but which present no feature likely to tell against the life-prospects.(c) Fair average lives, presenting some flaw or imperfection, or some combination of unfavourable circumstances, which only falls short of requiring an extra premium.

scholarly journals Effect of pH, temperature and moisture content during composting of rice straw burning at different temperature with food waste and effective microorganisms

2018 ◽  
Vol 34 ◽  
pp. 02019 ◽  
Author(s):  
Irnis Azura Zakarya ◽  
Siti Noor Baya Khalib ◽  
Norhasykin Mohd Ramzi
Keyword(s):  
Moisture Content ◽  
Rice Straw ◽  
Food Waste ◽  
Ph Value ◽  
Value Added ◽  
Effective Microorganisms ◽  
Brown Sugar ◽  
Compost Quality ◽  
Composting Process ◽  
Straw Ash

Rice straw is considered as one of the most important agricultural residues and represented as one of the major by-products from rice production process. Normally, rice straw that produced after harvesting season been directly burned on-farm. Conversion of rice straw into value added compost will improve the productivity of plant, reduction of pollution towards environment and reduction of local pollution due to open burning activity. The objective of this study was to evaluate the performance of composting rice straw ash (RSA) with food waste (FW) and effective microorganisms (EM) in term of the compost quality (pH, temperature, moisture content). RSA was prepared by burning the raw rice straw at three different temperature of 300°C, 400°C and 500°C for one hour. EM used during the composting process was prepared by mixing of brown sugar, ‘tempe’ and water that can be used after one week of fermentation process. There are four treatments of RSA-compost; RSA (300°C), RSA (400°C), RSA (500°C) and control (raw rice straw) with the same amount of compost medium; 1kg black soil, 0.5kg RSA, 3L EM and 1kg FW. The composting process happens for 30 days. During the composting process, all the parameters of RSA-compost obtained in a range like; pH value 8-10, temperature 20-50°C and moisture content 40-60%. The result showed that all compost quality of rice straw ash compost obtained in an acceptable range for final compost to establish.

scholarly journals The Impact Of Malocclusion On Quality Of Life And Life Satisfaction

10.3823/2492 ◽  
2017 ◽  
Vol 10 ◽  
Author(s):  
Antonio Franklin Cordeiro Neto ◽  
Roberto Carlos Mourão Pinho ◽  
Raulison Vieira de Sousa ◽  
Bruna De Carvalho Farias Vajgel ◽  
Renata Cimões
Keyword(s):  
Quality Of Life ◽  
Satisfaction With Life ◽  
Negative Impact ◽  
Class Ii ◽  
Class I ◽  
Satisfaction With Life Scale ◽  
Class Iii ◽  
Level Of Satisfaction ◽  
The Impact

Objective: The aim of this study was to evaluate whether the type of malocclusion affects the perception of quality and satisfaction with people's lives. Material and Methods: Three questionnaires were applied: the first one assessed the social and economic factors and the diagnosis of malocclusion through Angle´s classification, the second was the OHIP-14, and the third was the Satisfaction With Life Scale (SWLS). Results: This study involved 444 patients aged 18 to 72 years. According to the classification of malocclusion 48.65% was Class I, 22.75% was Class II division 1, 12.16% was Class II division 2 and Class III 16.44%. The malocclusion did not have negative impact on the level of satisfaction with life, but in all dimensions analyzed by OHIP-14, malocclusion had negative impact on quality of life and was statistically significant. The most severe malocclusions such as Class II and Class III represent a more negative impact when compared to Class I malocclusion. Moreover, for the dimensions assessed by the OHIP-14, physical pain and psychological discomfort were those who showed a greater negative impact on quality of life. Conclusions: Malocclusions do not interfere with the judgment of the level of satisfaction with life, but they produce a negative impact on quality of life.

scholarly journals Condition-Specific Impacts on Quality of Life Attributed to Malocclusion by Adolescents with Normal Occlusion and Class I, II and III Malocclusion

2008 ◽  
Vol 78 (6) ◽  
pp. 977-982 ◽  
Author(s):  
Eduardo Bernabé ◽  
Aubrey Sheiham ◽  
Cesar Messias de Oliveira
Keyword(s):  
Quality Of Life ◽  
Socioeconomic Status ◽  
Class Ii ◽  
Social Effects ◽  
Class I ◽  
Chi Square ◽  
Angle Class ◽  
Normal Occlusion ◽  
Oral Impacts

Abstract Objective: To compare the prevalence, intensity, and extent of condition-specific oral impacts on quality of life attributed to malocclusion by Brazilian adolescents with normal occlusion and those with Angle Class I, II, and III malocclusion. Materials and Methods: Four groups of 55 adolescents were configured such that each group represented normal occlusion, as well as Angle Class I, II, and III malocclusion. No radiographs were taken. Adolescents aged 15 to 16 years were selected from those attending all secondary schools in Bauru (Sao Paulo, Brazil). The Oral Impacts on Daily Performances index was used to collect data on condition-specific impacts (CSIs) attributed to malocclusion. The prevalence, as well as the intensity and extent, of CSIs was compared among the four groups with the use of Chi-square and Kruskal-Wallis tests, respectively. Results: Groups were comparable according to sex, age, and socioeconomic status. The prevalence of CSI was significantly different between groups (P = .039). Class II and III malocclusion groups reported a higher prevalence of CSI than those with normal occlusion and Class I malocclusion. However, the intensity and extent of CSI were not significantly different between groups. Conclusions: The prevalence, but not the intensity and extent, of CSIs attributed to malocclusion differed among groups with different malocclusions. The present findings support the concept that malocclusion has physical, psychological, and social effects on quality of life.

scholarly journals Health-Related Quality of Life across Recent Pediatric Obesity Classification Recommendations

Children ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 303
Author(s):  
William R. Black ◽  
Kelsey B. Borner ◽  
Marshall T. Beauchamp ◽  
Ann M. Davis ◽  
Meredith L. Dreyer Gillette ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Severe Obesity ◽  
Growth Curves ◽  
Class Ii ◽  
Class I ◽  
Class Iii ◽  
Class Iii Obesity ◽  
Related Quality ◽  
Health Related

Extreme body mass index (BMI) values (i.e., above the 97th and below the 3rd percentiles) are inaccurately represented on the Centers for Disease Control and Prevention’s growth curves, which may limit the utility of BMI percentile and BMI z-score for capturing changes in clinical outcomes for patients at extreme weights. Modeling child obesity severity based upon the percentage of BMI in excess of the 95th percentile (BMI95pct) has been proposed as an improved metric to better capture variability in weight at extreme ends of growth curves, which may improve our understanding of relationships between weight status and changes in clinical outcomes. However, few studies have evaluated whether the use of BMI95pct would refine our understanding of differences in clinical psychosocial constructs compared to previous methods for categorization. This cross-sectional study evaluated child obesity severity based on BMI95pct to examine potential group differences in a validated, obesity-specific measure of Health-Related Quality of Life (HRQoL). Four hundred and sixty-five children with obesity completed Sizing Me Up, a self-report measure of HRQoL. Children were classified into categories based on BMI95pct (i.e., class I: ≥100% and <120%; class II: ≥120% and <140%; class III: ≥140%). The results indicate that children with class III obesity reported lower HRQoL than children with class I and class II obesity; however, there were no differences between Class II and Class I. In much of the previous literature, children with class II and class III obesity are often combined under the category “Severe Obesity” based upon BMI above the 99th percentile. This study suggests that grouping children from various classes together would neglect to capture critical differences in HRQoL. Future research including children with severe obesity should consider obesity classes to best account for functioning and clinical outcomes.

scholarly journals PENGGUNAAN DOLOMIT (MgCa(CO3)2) SEBAGAI PENSTABIL PH PADA KOMPOSTING SAMPAH DAPUR BERBASIS DEKOMPOSISI ANAEROB DAN AEROB

2018 ◽  
Author(s):  
Anita Dewi Moelyaningrum
Keyword(s):  
Drinking Water ◽  
Soil Ph ◽  
Ph Value ◽  
Waste Reduction ◽  
Household Waste ◽  
Health It ◽  
Kitchen Waste ◽  
Compost Quality ◽  
The Earth

Backgrounds. Composting is one way to reduce waste and add something beneficial to the earth and health. It is very important to analyze the quality of compost before adding compost to the soil. pH value is one of the indicators of quality compost. The pH value is an indicator of the acidity or alkalinity of the maturity compost.Objectives. The objective of this research is to analyze pH value compost which added dolomite and without dolomite, compost quality and reduces waste.Methods. Anaerobic and aerobic composter modification from reuse plastic mineral drinking water 19 litter. The method of this research is experimental design.The row organic materials are 3 kg kitchen waste, fruits waste 1 kg (composter anaerobic 1 and aerobic 3) as control and added dolomite 0,3 kg (composter anaerobic 2 and aerobic 4 ) as treatment.Results. The row material in the control and treatment showed that temperature at 20.2 °C and 25°C; pH value at 4.3 and 5.6; moisture at 86.3 and 88.9; carbon into nitrogen (C/N) ratios 23.4 and 14.05. Maturity compost showed temperature and pH value are at 20°C and 6.0 (composter 3) and at 2.5 °C and 7 (composter 4). Compost Quality analyzed in NPK. The control showed NPK at 0,41; 0.1758; 0,125 (composter 1); 1.42; 0.208; 0.151 (composter 3). The treatment showed NPK at 0.97; 0,0502; 0.124 (composter 2); 1,04; 0.082; 0,222 (composter 4). Waste reduction at 93% (composter 1), 95% (composter 2), 60% (composter 3), 96,8%(composter 4).Conclusions. Dolomite is pH stabilization on household waste and Effective to reduce waste.

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