scholarly journals Microwave and Ultrasound Based Methods in Sludge Treatment: A Review

2021 ◽  
Vol 11 (15) ◽  
pp. 7067
Author(s):  
Zoltán Jákói ◽  
Balázs Lemmer ◽  
Cecilia Hodúr ◽  
Sándor Beszédes
Keyword(s):  
Wastewater Sludge ◽  
Process Efficiency ◽  
H2o2 Treatment ◽  
Treatment Conditions ◽  
Appropriate Treatment ◽  
Scientific Papers ◽  
Health Related ◽  
Scientific Results ◽  
Treatment Procedures ◽  
Anaerobic Digestibility

The amount of waste activated sludge (WAS) is increasing annually, and since it presents potential environmental and health-related risks, an appropriate treatment and stabilization process is needed. It has been shown in numerous studies in the past few decades that amongst the advanced treatment methods of sludge, microwave and ultrasound-based processes offer promising and effective alternatives. The main advantage of these physical methods is that they are energy-efficient, easy to implement and can be combined with other types of treatment procedures without major difficulties. In this review article we would like to present the recent scientific results of the microwave, ultrasound and combined (microwave-alkaline, microwave-H2O2, ultrasound-alkaline and ultrasound-H2O2) treatment of wastewater sludge, in terms of different process-efficiency indicators. Although the obtained results somewhat vary between the different scientific papers, it can be undoubtedly stated that both MW and US—either individually or in combination with chemical treatments—can enhance several aspects of sludge processing, like increasing the SCOD/TCOD rate, disintegration degree (DD), or the anaerobic digestibility (AD), but the extent of these increments clearly depends on the treatment conditions or parameters.

scholarly journals Principle and application of atomic force microscopy (AFM) for nanoscale investigation of metal corrosion

2020 ◽  
Vol 38 (5) ◽  
pp. 423-432
Author(s):  
Kebede W. Shinato ◽  
Feifei Huang ◽  
Ying Jin
Keyword(s):  
Atomic Force Microscopy ◽  
Metal Corrosion ◽  
Surface Phenomena ◽  
Important Method ◽  
Corrosion Study ◽  
Force Microscopy ◽  
Atomic Force ◽  
Scientific Papers ◽  
Scientific Results

AbstractIn this paper, the principle and application of atomic force microscopy (AFM) are reviewed and discussed in detail. Several scientific papers are used to find out data about AFM. The obtained scientific results are summarized to get a better understanding of the method and its application. The application of AFM for corrosion study is discussed in detail, and the possible conclusion is made based on the results of several articles. It is summarized that AFM is an important method to determine the surface phenomena of metal corrosion.

Understanding Physiology and Pathology of Sexual Health

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
Sana Mohamed Abasher Haj Ali
Keyword(s):  
Sexual Health ◽  
Sexual Pleasure ◽  
World Health ◽  
Broad Area ◽  
Genital Mutilation ◽  
Health Related ◽  
New Treatment ◽  
Health Organization ◽  
Treatment Procedures ◽  
Female Genital

According to world health organization, Sexual health is a broad area that encompasses many inter-related challenges and problems. Key among the issues and concerns are human rights related to sexual health, sexual pleasure, eroticism, and sexual satisfaction, diseases (HIV/AIDS, STIs, RTIs), violence, female genital mutilation, sexual dysfunction, and mental health related to sexual health. The present review presents physiology and pathology of sexual health which helps the researchers and clinicians to understand and plan and develop new treatment procedures for better reproductive health for the benefit of population in general.

scholarly journals The Quality of Online Health-Related Information – an Emergent Consumer Health Issue

2016 ◽  
Vol 62 (4) ◽  
pp. 408-421 ◽  
Author(s):  
Valentin Nădăşan
Keyword(s):  
Evaluation Criteria ◽  
The Internet ◽  
Consumer Health ◽  
Related Information ◽  
Quality Health ◽  
Health Related ◽  
Potential Risks ◽  
Treatment Procedures ◽  
The Relationship

AbstractThe Internet has become one of the main means of communication used by people who search for health-related information. The quality of online health-related information affects the users’ knowledge, their attitude, and their risk or health behaviour in complex ways and influences a substantial number of users in their decisions regarding diagnostic and treatment procedures.The aim of this review is to explore the benefits and risks associated with using the Internet as a source of health-related information; the relationship between the quality of the health-related information available on the Internet and the potential risks; the multiple conceptual components of the quality of health-related information; the evaluation criteria for quality health-related information; and the main approaches and initiatives that have been implemented worldwide to help improve users’ access to high-quality health-related information.

Assessing the potential of a UV-based AOP for treating high-salinity municipal wastewater reverse osmosis concentrate

2013 ◽  
Vol 68 (9) ◽  
pp. 1994-1999 ◽  
Author(s):  
Muhammad Umar ◽  
Felicity Roddick ◽  
Linhua Fan
Keyword(s):  
Reverse Osmosis ◽  
Municipal Wastewater ◽  
High Salinity ◽  
Oxygen Demand ◽  
Process Efficiency ◽  
Secondary Effluent ◽  
Biological Processes ◽  
Fluorescence Excitation ◽  
H2o2 Treatment ◽  
Humic Compounds

The UVC/H2O2 process was studied at laboratory scale for the treatment of one moderate (conductivity ∼8 mS/cm) and two high salinity (∼23 mS/cm) municipal wastewater reverse osmosis concentrate (ROC) samples with varying organic and inorganic characteristics. The process efficiency was characterized in terms of reduction of dissolved organic carbon (DOC), chemical oxygen demand (COD), colour and absorbance at 254 nm (A254), and the improvement of biodegradability. The reduction of colour and A254 was significantly greater than for DOC and COD for all samples due to the greater breakdown of humic compounds, as confirmed by fluorescence excitation-emission matrix spectra. Fairly small differences in the reduction of DOC (26–38%) and COD (25–37%) were observed for all samples, suggesting that the salinity of the ROC did not have a significant impact on the UVC/H2O2 treatment under the test conditions. The biodegradability of the treated ROC samples improved markedly (approximately 2-fold) after 60 min UVC/H2O2 treatment. This study indicates the potential of UVC/H2O2 treatment followed by biological processes for treating high-salinity concentrate, and the robustness of the process where the characteristics of the secondary effluent (influent to RO) and thus resultant ROC vary significantly.

Evaluation of citations: a proposition to supplement the corresponding rule book in Serbia

2017 ◽  
Vol 35 (3) ◽  
pp. 598-614
Author(s):  
Bojana Dimic Surla ◽  
Dusan Ilija Surla ◽  
Dragan Ivanovic
Keyword(s):  
Information System ◽  
Academic Staff ◽  
Research Information ◽  
Content Type ◽  
Research Information System ◽  
Scientific Papers ◽  
The Republic ◽  
Scientific Results ◽  
Number Of Citations ◽  
The Impact

Purpose The purpose of this article is to describe a proposition for the evaluation of citations of scientific papers, which could serve as a supplement to the existing Rule Book of the Ministry of the Republic of Serbia, which is used in the procedure of electing candidates for particular academic and research titles. The evaluation and quantitative presentation of the results and evaluation of citations were carried out on data taken from the database of the Current Research Information System of the University of Novi Sad (CRIS UNS), which is harmonized with the Rule Book of the Ministry with respect to the evaluation of published scientific results of researchers. Design/methodology/approach There are different criteria to evaluate the quality of scientific papers based on their citations. The pertinent parameters can be the total number of citations, the number of citations in a defined time period and by assigning the appropriate weighting values to the citations. This work proposes a procedure of assigning the citation weighting values based on the evaluation of the scientific results in which the citation appeared according to the Rule Book in the Republic of Serbia. Based on this, the authors introduced the impact factor of researchers as the ratio of the number of points of the evaluated citations and the number of points of the evaluated papers of the researcher. Findings Results showed that the research information system CRIS UNS can be extended to the evaluation of citations for a single researcher, groups of researchers and institutions. Practical implications The proposed solution enables the evaluation of citations in the process of election and promotion of academic staff. In this way, there is a means for measuring the scientific influence of a researcher in the relevant scientific area. Social implications The evaluation of citations may be included in the national strategies of scientific development, funding and evaluation of research projects; for promotions of academic staff at the universities and other academic institutions; and ranking of researchers and research organizations. Originality/value The main idea presented in the paper is the definition of a rule book (or several rule books) for the evaluation of citations. Based on the evaluation of citations, the authors proposed the term “the impact factor of researcher”.

Sludge electrooxidation as pre-treatment for anaerobic digestion

2016 ◽  
Vol 75 (4) ◽  
pp. 775-781 ◽  
Author(s):  
J. A. Barrios ◽  
U. Duran ◽  
A. Cano ◽  
M. Cisneros-Ortiz ◽  
S. Hernández
Keyword(s):  
Anaerobic Digestion ◽  
Volatile Fatty Acids ◽  
Biogas Production ◽  
Oxygen Demand ◽  
Wastewater Sludge ◽  
Boron Doped Diamond ◽  
Boron Doped ◽  
Treatment Conditions ◽  
Volatile Solids ◽  
Pre Treatment

Anaerobic digestion of wastewater sludge is the preferred method for sludge treatment as it produces energy in the form of biogas as well as a stabilised product that may be land applied. Different pre-treatments have been proposed to solubilise organic matter and increase biogas production. Sludge electrooxidation with boron-doped diamond electrodes was used as pre-treatment for waste activated sludge (WAS) and its effect on physicochemical properties and biomethane potential (BMP) was evaluated. WAS with 2 and 3% total solids (TS) achieved 2.1 and 2.8% solubilisation, respectively, with higher solids requiring more energy. After pre-treatment, biodegradable chemical oxygen demand values were close to the maximum theoretical BMP, which makes sludge suitable for energy production. Anaerobic digestion reduced volatile solids (VS) by more than 30% in pre-treated sludge with a food to microorganism ratio of 0.15 g VSfed g−1 VSbiomass. Volatile fatty acids were lower than those for sludge without pre-treatment. Best pre-treatment conditions were 3% TS and 28.6 mA cm−2.

scholarly journals Suffering as a Diagnostic Indicator

2020 ◽  
Author(s):  
Marek Rózycki ◽  
Robert Tobias
Keyword(s):  
Case Studies ◽  
Pain Syndrome ◽  
Actual Condition ◽  
New Disease ◽  
Appropriate Treatment ◽  
Neurological Patients ◽  
Disease Entities ◽  
Treatment Procedures ◽  
Patients Experience ◽  
Diagnostic Indicator

Pain is the subjective sensation closely related to disease and treatment. Very often its diagnosis is more an expression of the diagnostician’s experience than a description of the patient’s actual condition. In particular, orthopedic and neurological patients who develop Complex Regional Pain Syndrome are misdiagnosed because the intensity of their sensations is disbelieved. Based on case studies, it seems appropriate to introduce an additional category of patient experience that will enable prompt recognition and appropriate treatment. The misdiagnoses under evaluation also exhibit frequent improper practitioner responses to patients’ experience, ranging from open expressions of disbelief, through indifference, to helplessness and pessimism. This article presents case studies in which patients’ expressions of suffering were not used to modify the treatment. Rather, medical professionals accepted the pain as normal under the circumstances and resulting from tissue damage. However, in these cases, the pain was a symptom of a new disease entity, in development since the original diagnosis. With improved patient communication and treatment procedures, such oversights can be avoided and new disease entities will be more readily diagnosable.

scholarly journals The Power of Radio to Promote Health and Resilience in Natural Disasters: A Review

2019 ◽  
Vol 16 (14) ◽  
pp. 2526 ◽  
Author(s):  
Karin Hugelius ◽  
Mike Adams ◽  
Eila Romo-Murphy
Keyword(s):  
Natural Disasters ◽  
Psychosocial Support ◽  
Grey Literature ◽  
Related Information ◽  
Psychosocial Wellbeing ◽  
Health Response ◽  
Scientific Papers ◽  
Health Related ◽  
Community Efficacy ◽  
The Impact

Humanitarian radio has been used in humanitarian aid efforts and after natural disasters over the last 15 years. However, the effects have barely been evaluated, and there are few scientific reports on the impact of radio as a disaster health response intervention. Therefore, this study aimed to provide an overview of the use and impact of humanitarian radio in natural disasters from a health perspective. A literature review of 13 scientific papers and grey literature resources was conducted. The results show that humanitarian radio could be used to promote both physical and psychosocial wellbeing by providing health-related information, advice and psychosocial support in natural disasters. Community resilience can be enhanced by the promotion of community engagement and can strengthen self-efficacy and community efficacy. Radio also has the potential to cost-effectively reach a large number of affected people in areas with severely damaged infrastructure. Radio could, therefore, contribute to health recovery and wellbeing from both individual and community perspectives. As such, health professionals; crises communication professionals, including radio journalists; and disaster-managing stakeholders should be prepared and trained to use humanitarian radio as an integrated part of the disaster health response in natural disasters.

scholarly journals Association between Health-Related Physical Fitness and Self-Rated Risk of Depression in Adolescents: Dados Study

2020 ◽  
Vol 17 (12) ◽  
pp. 4316
Author(s):  
Carlos Bou-Sospedra ◽  
Mireia Adelantado-Renau ◽  
Maria Reyes Beltran-Valls ◽  
Diego Moliner-Urdiales
Keyword(s):  
Physical Fitness ◽  
Cardiorespiratory Fitness ◽  
Common Mental Disorder ◽  
Assessment System ◽  
Physical And Mental Health ◽  
Health Related ◽  
Level 3 ◽  
Scientific Results ◽  
Fitness And Health ◽  
The Relationship

Depression is the most common mental disorder, affecting around 5% of adolescents. Physical fitness is considered a powerful marker of physical and mental health. The scientific results on the relationship between physical fitness and depression in the adolescent population are mixed. Therefore, the aim of the current study was to analyse the association between objectively assessed physical fitness and self-rated risk of depression in a group of adolescents. A total of 225 participants (44% girls), aged 13.9 ± 0.3 years, from the Deporte, ADOlescencia y Salud (DADOS) study were included in the analyses. Field-based Assessing Levels of Physical fitness and Health in Adolescents (ALPHA) health-related fitness test battery was used to objectively assess physical fitness components. The Behavior Assessment System for Children (BASC) level 3 was used to evaluate self-rated risk of depression. Our results showed that self-rated risk of depression was inversely associated with cardiorespiratory fitness (β = −0.172), as well as positively associated with body mass index (β = 0.146) and waist circumference (β = 0.137) (all p < 0.05). Adolescents with low levels of cardiorespiratory fitness had significantly higher odds of self-rated risk of depression (OR = 7.17; 95% CI, 1.51–33.95). These findings suggest that health-related physical fitness, particularly cardiorespiratory fitness and body composition, is associated with depression in adolescents.

scholarly journals SCIENTIFIC SCHOOL OF MICROIRRIGATION: ACHIEVEMENTS AND DEVELOPMENT PROSPECTS

2019 ◽  
pp. 68-77
Author(s):  
M. I. Romashchenko ◽  
A. P. Shatkovskyi ◽  
V. V. Vasiuta ◽  
S. V. Usatyi ◽  
L. G. Usata ◽  
...  
Keyword(s):  
Agricultural Land ◽  
Irrigation System ◽  
Irrigation Management ◽  
Scientific Research ◽  
Scientific School ◽  
Historical Aspect ◽  
Analysis And Synthesis ◽  
Scientific Papers ◽  
Scientific Results ◽  
Micro Irrigation

Microirrigation is by far the most progressive irrigation method, with efficiencies reaching 92-98 %. According to the International Commission on Irrigation and Drainage, the world's agricultural land, which is irrigated through micro-irrigation systems, is constantly growing and now stands at over 20 million hectares. By the "Irrigation and drainage strategy in Ukraine until 2030" micro-irrigation methods are defined as one of the strategic directions of the state policy of the branch. Research on the direction of "micro-irrigation of crops" in Ukraine began from the late 60's of the last century. The historical aspect of the development of research in this area is thoroughly covered in previous scientific papers. Therefore, the purpose of this study is a comprehensive analysis of the basic fundamental and applied results of research of the scientific school on micro irrigation IWPaLR NAAS in the early XXI century and substantiation of perspective directions of their development. Using theoretical methods of scientific research (analysis and synthesis, comparison, classification and generalization), the authors systematized the most significant scientific results in terms of normative, methodological, technical and technological components. The list of normative and methodological documents prepared by IWPaLR NAAS in the direction of microirrigation is given. The results of developments in the technological component are detailed according to the research objects: water regime and processes of water consumption of crops, fertigation, pestigation, the influence of local moistening, fertilizers and water of different quality on the soil-plant-technical means of irrigation system, the formation of soil moisture zones, methods of appointment timing of vegetation irrigation and irrigation management systems. The key scientific results of the irrigation facilities’ testing laboratory are highlighted. The list of developed and implemented by the IWPaLR NAAS technical means of microirrigation systems is given. The strategic directions of further scientific research are substantiated, which should meet the global trend for environmentally friendly irrigation, as well as resource and energy conservation. The need of Ukraine in the systems of microirrigation of agricultural crops for the period up to 2030, the role of current and future developments of the scientific school of micro irrigation IWPaLR NAAS on their implementation are determined.

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