scholarly journals Concrete damage due to oxidation of pyrrhotite-bearing aggregate: a review

2021 ◽  
Vol 6 ◽  
pp. 82-92
Author(s):  
Josée Duchesne ◽  
Andrea Rodrigues ◽  
Benoit Fournier
Keyword(s):  
Sampling Method ◽  
Sulfate Attack ◽  
Crystallographic Structure ◽  
Iron Sulfides ◽  
Secondary Minerals ◽  
Rock Types ◽  
The Usa ◽  
Concrete Damage ◽  
Internal Sulfate Attack

Oxidation of pyrrhotite-bearing aggregates is one of the major causes of concrete damage in numerous buildings in Trois-Rivières in Canada and Connecticut in the USA. In the presence of moisture and oxygen, pyrrhotite oxidizes to generate iron-and sulfate-rich secondary minerals that cause internal sulfate attack. Iron sulfides are accessory minerals of different rock types. The distribution of sulfides is often very heterogeneous in terms of aggregate particles, even at the level of the quarries in which some areas may contain copious amounts than others, which complicates the sampling method. Pyrrhotite is a complex mineral with varying chemical composition, crystallographic structure, and specific surface area. These factors influence the reactivity of pyrrhotite. Therefore, it is challenging to control the quality of the aggregate sources. In this study, recent advances in the identification and quantification of pyrrhotite to diagnose complicated cases are presented, and a performance-based approach for the quality control of new sources of aggregates is introduced. The performance-based approach is preferred because it eliminates the influence of the oxidation of pyrrhotite.

Effect of new dietary supplement on sperm quality

2012 ◽  
Vol 153 (45) ◽  
pp. 1787-1792 ◽  
Author(s):  
Mária Horváth ◽  
Endre Czeizel
Keyword(s):  
Adverse Effect ◽  
Clinical Trial ◽  
Dietary Supplement ◽  
Male Fertility ◽  
Sperm Quality ◽  
Sperm Count ◽  
Before And After ◽  
The Usa ◽  
New Treatments

Introduction: There is a decline in male fertility thus new treatments are needed. Aims: To test the efficacy of a new dietary supplement developed in the USA and registered as a curing drug in Hungary (OGYI). Methods: In a clinical trial 100 men with low sperm quality (spermium count 5–20 M/ml, good motility 10–40%, and adverse shape 30–50%) were examined. Results: Sperm parameters were measured before and after a 3-month treatment and after another 3-month without treatment. This dietary supplement statistically and clinically significantly improved sperm count and motility. In 74 cases this dietary supplement demonstrated a beneficial effect on sperm quality (more than 10% increase in sperm count, or quality of motility, or shape); in 16 cases the improvement exceeded 30%. No adverse effect could be accounted for this treatment. Conclusions: This new dietary supplement may contribute to the treatment of male infertility. Orv. Hetil., 2012, 153, 1787–1792.

Strategies for mitigating burnout among early career doctors in Nigeria: lessons learnt from the qualitative CHARTING study

2020 ◽  
Vol 3 (1) ◽  
pp. 97-103 ◽  
Author(s):  
Oladimeji Adebayo ◽  
Kehinde Kanmodi ◽  
Olusegun Olaopa ◽  
Omotayo Francis Fagbule ◽  
Iyanu Adufe ◽  
...  
Keyword(s):  
Sampling Method ◽  
Psychosocial Problems ◽  
Early Career ◽  
Leadership Positions ◽  
Group Discussions ◽  
Psychological Review ◽  
Psychological Issues ◽  
Specific Factors ◽  
Stakeholder Dialog

AbstractBackgroundEarly career doctors (ECDs) are faced with many challenges due to their transition from undergraduate medical/dental studentship to being postgraduate doctors and being in an early phase of their career. The specific factors that affect ECDs in their careers and endeavors at the workplace range from poor remuneration, particularly in developing countries, to psychosocial problems (such as burnout [BO] syndrome). There is a dearth of information on BO among ECDs in Nigeria. This qualitative study aims to explore the opinions of ECDs in Nigeria on the causal/predisposing factors of BO, effects of BO, and strategies for mitigating BO among ECDs in Nigeria.MethodUsing purposive sampling method, two sessions of focus group discussions (FGDs) involving 14 ECDs (key informants) holding key leadership positions and who were delegates of other ECDs in Nigeria were conducted to explore their experiences on psychological issues among ECDs. Data collected were transcribed and analyzed thematically.ResultsBO is an issue of serious concern among ECDs in Nigeria. The causes of BO are diverse, some of which include low staff strength, prolonged work hours, wrong counseling, lack of job description and specification, and abuse of powers by trainers. In order to mitigate the issue of BO among ECDs, the respondents recommended that work policy review, medical workforce strengthening, stakeholder dialog on ECDs’ welfare, regular psychological review of ECDs, and provision of free yearly medicals need to be looked into. Conclusion: Our findings revealed that the participants considered BO issues among ECDs to be common, and it affected their performance and the overall quality of care in Nigeria health system. Based on our findings, there is an urgent need to mitigate the problem of emotional exhaustion among ECDs in Nigeria.

PENGARUH NILAI PELANGGAN, INOVASI PRODUK DAN KUALITAS LAYANAN TERHADAP LOYALITAS NASABAH BANK MUAMALAT INDONESIA CABANG MADIUN

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Binti Mutafarida
Keyword(s):  
Quality Of Service ◽  
Customer Loyalty ◽  
Random Sampling ◽  
Product Innovation ◽  
Customer Value ◽  
Research Method ◽  
Sampling Method ◽  
Descriptive Research ◽  
Independent Variable

The development of sharia banking in Indonesia very rapidly grow up preceded by Bank Muamalat Indonesia and in 2013 ranked as the bank with the highest loyalty and the best among other sharia banking nationally. Bank Muamalat Indonesia branch of Madiun is one of the first branch in Madiun and currently has many competitors from other sharia banking. Based on this background, in this study take what factors affect the size of customer loyalty Bank Muamalat Indonesia branch of Madiun. Based on the result of research, it is found that the level of loyalty of customer of Bank Muamalat of Madiun branch is mostly influenced by product innovation with value of t test value obtained by t-count 2,493, while second factor is influenced by service quality with result of tcount 2,268. So the least influenced factor by the value of the customer is with value of 2.217. This research is a descriptive research method and associative / relationship, this matter to know the value of independent variable. While population of this research is funding customer of Bank Muamalat Indonesia branch of Madiun with amount of 22.196 customer by taking data using random sampling method as much as 108 customer. Keyword: Customer Value, Product Innovation AND Quality Of Service

A STUDY ON THE QUALITY ASSURANCE OF PAST AND PRESENT EVALUATION PROCEDURE OF B.ED. PROGRAMME OF GARHWAL, UNIVERSITY (THE CENTRAL UNIVERSITY) IN VIEW OF NCTE NORMS.

2018 ◽  
Vol 6 (26) ◽  
Author(s):  
Ruchika Verma ◽  
Seema Dhawan
Keyword(s):  
Quality Assurance ◽  
Prospective Teachers ◽  
Sampling Method ◽  
Evaluation Procedure ◽  
Interview Schedule ◽  
Purposive Sampling ◽  
Present Evaluation ◽  
Method Of Evaluation

The study attempted to find out the quality of the evaluation procedure of B.Ed. programme of Garhwal University, the Central University in view of NCTE Norms. The study also reveals the method and procedure of evaluation according to the latest 2 years B.Ed. programme. For the study, purposive sampling method was used. The tools – questionnaire and interview schedule was developed. On the basis of findings, it concluded that the evaluation procedure was in accordance with the NCTE Norms. With the implementation of two years B.Ed. course, the method of evaluation has also become more practical oriented, which has become a remarkable achievement and surely enhance the quality of prospective teachers

Trial by Triad: substituted judgment, mental illness and the right to die

2021 ◽  
pp. medethics-2020-107154
Author(s):  
Jacob M Appel
Keyword(s):  
Depressive Symptoms ◽  
Depressive Disorders ◽  
Substituted Judgment ◽  
Diminished Capacity ◽  
Accepted Standard ◽  
The Usa ◽  
Aid In Dying ◽  
Incapacitated Patients ◽  
The Right

Substituted judgment has increasingly become the accepted standard for rendering decisions for incapacitated adults in the USA. A broad exception exists with regard to patients with diminished capacity secondary to depressive disorders, as such patients’ previous wishes are generally not honoured when seeking to turn down life-preserving care or pursue aid-in-dying. The result is that physicians often force involuntary treatment on patients with poor medical prognoses and/or low quality of life (PMP/LQL) as a result of their depressive symptoms when similarly situated incapacitated patients without such depressive symptoms would have their previous wishes honoured via substituted judgment. This commentary argues for reconsidering this approach and for using a substituted judgment standard for a subset of EMP/LQL patients seeking death.

scholarly journals Comprehensive Overview of Sleep Disorders in Patients with Chronic Liver Disease

2021 ◽  
Vol 11 (2) ◽  
pp. 142
Author(s):  
Oana-Mihaela Plotogea ◽  
Madalina Ilie ◽  
Simona Bungau ◽  
Alexandru Laurentiu Chiotoroiu ◽  
Ana Maria Alexandra Stanescu ◽  
...  
Keyword(s):  
Sleep Disorders ◽  
Daily Practice ◽  
Chronic Liver ◽  
Asian Countries ◽  
Chronic Liver Diseases ◽  
Comprehensive Overview ◽  
The Usa ◽  
The Impact ◽  
Reliable Methods

The impact of sleep disorders (SDs) on patients with chronic liver diseases (CLD) is tremendous. SDs are frequently encountered among these patients and interfere with their quality of life. This review aims to present the data available so far about the prevalence, phenotypes, and proposed pathophysiological mechanisms of SDs in CLD. Moreover, we proposed to search the literature regarding the most reliable methods to assess SDs and the possible therapeutic options in patients with CLD. The main results of this review show that when it comes to prevalence, the percentages reported vary widely between studies performed among populations from the USA or Europe and those coming from Asian countries. Furthermore, it has been proven that SDs may also be present in the absence of neurocognitive disorders attributable to hepatic encephalopathy (HE), which contradicts traditional suppositions where SDs were considered part of the clinical scenario of HE. Currently, there are no specific recommendations or protocols to assess SDs in CLD patients and data about the therapeutic management are limited. Taking into consideration their impact, a protocol for diagnosing and managing SDs should be developed and included in the daily practice of hepatologists.

scholarly journals Influence of Bagging on the Development and Quality of Fruits

Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 358
Author(s):  
Muhammad Moaaz Ali ◽  
Raheel Anwar ◽  
Ahmed F. Yousef ◽  
Binqi Li ◽  
Andrea Luvisi ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Consumer Choice ◽  
Abiotic Factors ◽  
Market Value ◽  
Quality Attribute ◽  
Export Markets ◽  
External Appearance ◽  
The Usa ◽  
Main Determinants

Fruit quality is certainly influenced by biotic and abiotic factors, and a main quality attribute is the external appearance of the fruit. Various possible agronomical approaches are able to regulate the fruit microenvironment and, consequently, improve fruit quality and market value. Among these, fruit bagging has recently become an integral part of fruits’ domestic and export markets in countries such as Japan, China, Korea Australia and the USA because it is a safe and eco-friendly technique to protect fruits from multiple stresses, preserving or improving the overall quality. Despite increasing global importance, the development of suitable bagging materials and, above all, their use in the field is quite laborious, so that serious efforts are required to enhance and standardize bagging material according to the need of the crops/fruits. This review provides information about the effects of bagging technique on the fruit aspect and texture, which are the main determinants of consumer choice.

Understanding the Experiences of Elderly Bereaved Men and the Bond With Their Pets

2021 ◽  
pp. 003022282110048
Author(s):  
Monique C. Thompson, PsyD ◽  
Angela B. Kim, PhD
Keyword(s):  
Sampling Method ◽  
Phenomenological Study ◽  
Companion Animals ◽  
Companion Animal ◽  
Social Connection ◽  
New Normal ◽  
Purposeful Sampling ◽  
Older Males

The purpose of this transcendental phenomenological study was to understand the bereaved Older males’ experiences with the interaction and ownership of a companion animal after the death of their partner. The primary researcher recruited 13 participants via a criterion-based purposeful sampling method to assure the quality of the information collected. Results revealed six themes: (a) bonds with their pets grew stronger and closer after the loss of their wife; (b) men were able to express their grief to their pets; (c) companion animals helped the men psychologically during grief; (d) pets were influential during times when the wife’s presence would have been valuable; (e) companion animals helped men with loneliness and social connection; and (f) companion animals helped men find a new normal by providing a purpose and routine during bereavement. The pets proved to be a source of support for these widowed men.

Reflections on FDA and WHO recommendations concerning clinical trials

1989 ◽  
Vol 4 (2) ◽  
pp. 117-122 ◽  
Author(s):  
J.-F. Dreyfus ◽  
D. Cremniter ◽  
J.D. Guelfi
Keyword(s):  
Clinical Trials ◽  
Drug Users ◽  
Objective Evaluation ◽  
World Health ◽  
Measuring Instruments ◽  
New Techniques ◽  
The Usa ◽  
The One ◽  
Health Organization

SummaryWe are still confronted by numerous different nosographic models and problems concerning the objective evaluation of patients progress during treatment. It is interesting to consider the consequences of this situation in psychiatry which still involves a relative diversity of practical methods used in clinical trials. The recommendations of the USA Food and Drug Administration, on the one hand, constitute a highly structured and precise reference. The World Health Organization, on the other hand, promulgates general recommendations resulting from a compromise designed to satisfy the greatest number of clinicians.Despite the apparently diverse principles and the different practical methods they propose, both those sets of recommendations have been useful in inspiring clinicians to reflect upon these different methodological approaches. The qualities of the inclusion criteria used in the study of patients and the sensitivity of the different measuring instruments have allowed psychotropic drug users as well as producers to recognize the need for a certain rigour in clinical trials.The FDA and WHO guidelines have certainly improved the quality of clinical trials in psychopharmacology. However, they also represent a source of resistance to innovation.A series of consensus meetings to first reconcile US and European points of view and later to include new techniques in the recognized sets of methods would therefore be helpful.

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