Thermochemical synthesis of tribotechnical coatings based on molybdenum diselenide MoSe2 on structural steels

2021 ◽  
Author(s):  
T.A. Lobova ◽  
◽  
A.G. Kolmakov ◽  
V.I. Bodnarchuk ◽  
E.A. Marchenko ◽  
...  
Keyword(s):  
Structural Steels ◽  
Study Results ◽  
Selenium Vapor ◽  
Molybdenum Diselenide ◽  
Time Parameters ◽  
Temperature Time ◽  
Tribotechnical Characteristics ◽  
Selenization Process ◽  
Thermochemical Synthesis

The study results of the influence of parameters of the process of chemical-thermal treatment in selenium vapor during the preparation of solid lubricating coatings from molybdenum diselenide on specimens of structural steels with a plasma Mo-coating are presented. An empirical mathematical model of the temperature-time parameters of the Mo selenization process is proposed, which makes possible to control the quality of the obtained coatings depending on requirements for their tribotechnical properties. An assessment of their tribotechnical characteristics in air and in vacuum in the temperature range 20—600 °С has been carried out.

Penatalaksanaan IMD pada Ibu Postpartum Sectio Caesarea Mempengaruhi Status Gizi dan Kecepatan Produksi ASI

2020 ◽  
Vol 2 (2) ◽  
pp. 112-120
Author(s):  
Nursari Abdul Syukur ◽  
Susi Purwanti
Keyword(s):  
Breast Milk ◽  
Nutritional Status ◽  
Milk Production ◽  
Quantitative Research ◽  
Milk Protein ◽  
Sectio Caesarea ◽  
Control Group ◽  
P Value ◽  
Study Results

Many mothers who give birth to Sectio Caesarea (SC) do not Initiate Early Breastfeeding (IMD), which fails exclusive breastfeeding. This study aimed to determine the effect of IMD management in postpartum SC mothers on nutritional status, speed of milk production, and quality of breast milk protein. Method: quantitative research with quasi approach experiment. The research design used was a pre-post-test control non-equivalent control group. A sampling of this study used the Consecutive method sampling with a sample of 20 mothers who gave birth by cesarean section (SC). Hypothesis testing uses the independent t-test and the Mann-Whitney test. The study results showed an influence on the management of IMD in postpartum SC mothers on the speed of ASI production (p-value=0.004) and nutritional status (p-value=0.028). There was no effect of IMD management on postpartum SC mothers on the quality of breast milk protein (p-value = 0.543). This study recommends that the hospital implement an IMD promotion program before the abdominal wall is closed as a form of intervention to increase milk production and maternal nutritional status

INFLUENCE OF FORCED CONVECTION IN LIQUID INSIDE THE TIN ON DURATION OF STERILIZATION IN THE COURSE OF FISH PROCESSING

2017 ◽  
pp. 137-144
Author(s):  
Gennadiy Valentinovich Alexeev ◽  
Elena Igorevna Verboloz
Keyword(s):  
High Temperature ◽  
Liquid Phase ◽  
Forced Convection ◽  
Thermal Process ◽  
Processing Time ◽  
Fish Processing ◽  
Study Results ◽  
Equipment Modernization ◽  
Bottom To Top

The article focuses on the process of intensive mixing of liquid phase in the tin during high-temperature sterilization, i.e. sterilization when temperature of the heat carrier reaches 150-160°C. It has been stated that for intensification of the thermal process during sterilization of tinned fish with liquid filling it is preferable to turn a tin from bottom to top. This operation helps to increase the driving power of the process and to shorten warming time. Besides, high-temperature sterilization carried out according to experimental modes, where the number of tin turnovers is calculated, greatly shortens processing time and improves quality of the product. In this case there is no superheating, all tins are evenly heated. The study results will contribute to equipment modernization and to preserving valuable food qualities.

Would you be more satisfied with your life if you travel more frequently?

2020 ◽  
Author(s):  
Chun-Chu Chen ◽  
Sui-Wen (Sharon) Zou ◽  
James F. Petrick
Keyword(s):  
Quality Of Life ◽  
Relevant Information ◽  
Life Domain ◽  
Travel And Tourism ◽  
Study Results ◽  
Personal Importance

This research intends to examine whether frequent travelers are more satisfied with their life as well as why these individuals travel more frequently than others. Derived from a sample of 500 Taiwanese respondents, the study results show that respondents attaching personal importance to tourism are more likely to gather travel-relevant information, resulting in more frequent travels. It is also found that frequent travelers are more satisfied with their life. These findings suggest that travel and tourism can be an important life domain affecting how people evaluate their overall quality of life.

scholarly journals The Quality of Statistical Reporting and Data Presentation in Predatory Dental Journals Was Lower Than in Non-Predatory Journals

Entropy ◽  
2021 ◽  
Vol 23 (4) ◽  
pp. 468
Author(s):  
Pentti Nieminen ◽  
Sergio E. Uribe
Keyword(s):  
Open Access ◽  
Peer Review ◽  
Scientific Journals ◽  
Mean Values ◽  
Data Presentation ◽  
Predatory Journals ◽  
Study Results ◽  
The Mean ◽  
Highly Cited

Proper peer review and quality of published articles are often regarded as signs of reliable scientific journals. The aim of this study was to compare whether the quality of statistical reporting and data presentation differs among articles published in ‘predatory dental journals’ and in other dental journals. We evaluated 50 articles published in ‘predatory open access (OA) journals’ and 100 clinical trials published in legitimate dental journals between 2019 and 2020. The quality of statistical reporting and data presentation of each paper was assessed on a scale from 0 (poor) to 10 (high). The mean (SD) quality score of the statistical reporting and data presentation was 2.5 (1.4) for the predatory OA journals, 4.8 (1.8) for the legitimate OA journals, and 5.6 (1.8) for the more visible dental journals. The mean values differed significantly (p < 0.001). The quality of statistical reporting of clinical studies published in predatory journals was found to be lower than in open access and highly cited journals. This difference in quality is a wake-up call to consume study results critically. Poor statistical reporting indicates wider general lower quality in publications where the authors and journals are less likely to be critiqued by peer review.

scholarly journals Influence of Slope Direction on the Soil Seed Bank and Seedling Regeneration of Castanopsis hystrix Seed Rain

Forests ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 500
Author(s):  
Zong Zhao ◽  
Yong Liu ◽  
Hongyan Jia ◽  
Wensheng Sun ◽  
Angang Ming ◽  
...  
Keyword(s):  
Seed Bank ◽  
Temporal Dynamics ◽  
Soil Seed Bank ◽  
Soil Layer ◽  
Seed Rain ◽  
Seed Vigor ◽  
Study Results ◽  
The Impact ◽  
Mature Seeds

Objective: To investigate the impact of different slope directions on the quantity and quality of the soil seed bank and seedling germination process of Castanopsis hystrix plantations. Method: Fixed sample plots in forest stands of Castanopsis hystrix were established on different slope directions (sunny slope, semi-sunny slope, semi-shady slope, and shady slope). The characteristics of the forest stand were investigated, and per-wood scaling was carried out. The temporal dynamics of the seed rain and seed bank were quantified using seed rain collectors and by collecting soil samples from different depths. The quantity and quality of the seeds were determined, and the vigor of mature seeds was measured throughout the study. Results: (1) The diffusion of Castanopsis hystrix seed rain started in mid-September, reached its peak from late October to early November, and ended in mid-December. (2) The dissemination process, occurrence time, and composition of the seed rain varied between the different slope directions. The seed rain intensity on the semi-sunny slope was the highest (572.75 ± 9.50 grains∙m−2), followed by the sunny slope (515.60 ± 10.28 grains∙m−2), the semi-shady slope (382.13 ± 12.11 grains∙m−2), and finally the shady slope (208.00 ± 11.35 grains∙m−2). The seed rain on the sunny slope diffused earliest and lasted the longest, while the seed rain on the shady slope diffused latest and lasted the shortest time. Seed vigor and the proportion of mature seeds within the seed rain were greatest on the semi-sunny slope, followed by the sunny slope, semi-shady slope, and the shady slope. (3) From the end of the seed rain to August of the following year, the amount of total reserves of the soil seed banks was highest on the semi-sunny slope, followed by the sunny slope then the semi-shady slope, and it was the lowest on the shady slope. The amount of mature, immature, gnawed seeds and seed vigor of the soil seed bank in various slope directions showed a decreasing trend with time. The seeds of the seed bank in all slope directions were mainly distributed in the litter layer, followed by the 0–2 cm humus layer, and only a few seeds were present in the 2–5 cm soil layer. (4) The seedling density of Castanopsis hystrix differed significantly on the different slope directions. The semi-sunny slope had the most seedlings, followed by the sunny slope, semi-shady slope, and the shady slope. Conclusions: The environmental conditions of the semi-sunny slope were found to be most suitable for the seed germination and seedling growth of Castanopsis hystrix, and more conducive to the regeneration and restoration of its population.

scholarly journals Evaluation of Environmental Information Disclosure of Listed Companies in China’s Heavy Pollution Industries: A Text Mining-Based Methodology

2021 ◽  
Vol 13 (10) ◽  
pp. 5415
Author(s):  
Rongjiang Cai ◽  
Tao Lv ◽  
Xu Deng
Keyword(s):  
Text Mining ◽  
Information Disclosure ◽  
Listed Companies ◽  
Environmental Information ◽  
Evaluation Framework ◽  
Scoring Method ◽  
Study Results ◽  
Environmental Information Disclosure ◽  
Heavy Pollution

Environmental information disclosure (EID) of listed companies is a significant and essential reference for assessing their environmental protection commitment. However, the content and form of EID are complex, and previous assessment studies involved manual scoring mainly by the experts in this field. It is subjective and has low timeliness. Therefore, this paper proposes an automatic evaluation framework of EID quality based on text mining (TM), including the EID index system’s construction, automatic scoring of environmental information disclosure quality, and EID index calculation. Furthermore, based on the EID of 801 listed companies in China’s heavy pollution industry from 2013 to 2017, case studies are conducted. The case study results show that the overall quality of the EID of listed companies in China’s heavily polluting industries is low, and there is a gap differentiation between the 16 industries. Compared with the subjective manual scoring method, TM evaluation can evaluate the quality of EID more effectively and accurately. It has great potential and can become an essential tool for the sustainable development of society and listed companies.

scholarly journals Predictors and Moderators of Quality of Life Among College Students With ADHD

2017 ◽  
Vol 23 (14) ◽  
pp. 1736-1745 ◽  
Author(s):  
Trevor D. Pinho ◽  
Patricia H. Manz ◽  
George J. DuPaul ◽  
Arthur D. Anastopoulos ◽  
Lisa L Weyandt
Keyword(s):  
Quality Of Life ◽  
College Students ◽  
Drug Use ◽  
Psychosocial Treatment ◽  
Psychopharmacological Treatment ◽  
Study Results ◽  
Students With Adhd ◽  
The Relationship ◽  
Total Impact

Objective: The current study examines (a) whether ADHD among college students is associated with differences in perceptions of quality of life (QoL); (b) the moderating roles of comorbidity, drug use, psychopharmacological treatment, and psychosocial treatment; and (c) the total impact of these variables on QoL. Method: Participants were college students with and without ADHD ( N = 372) in a longitudinal study. Results: College students with ADHD were more likely to assert negative global QoL evaluations relative to non-ADHD peers. The relationship between ADHD and QoL was not altered as a function of medication treatment, comorbid psychopathology, psychosocial treatment, or drug use. Conclusion: College students with ADHD behave similarly to other adults with ADHD in that they make lower subjective global evaluations of their QoL relative to their non-ADHD agemates. Other factors associated with ADHD and QoL do not appear to moderate this relationship.

Burden of Care and Its Relationship with Sleep Quality of Cancer Patients’ Caregivers

2021 ◽  
Author(s):  
Mohammadreza Boostaneh ◽  
Mohammad Zirak ◽  
Ramezan Fallah
Keyword(s):  
Sleep Quality ◽  
Cancer Patients ◽  
Poor Sleep ◽  
Burden Of Care ◽  
Quality Of Sleep ◽  
Study Results ◽  
Northwest Of Iran ◽  
The Mean ◽  
Convenience Sampling

Abstract Purpose: This study aimed to assess the burden of care and its relationship with sleep quality of cancer patients’ caregivers.Methods: This descriptive-correlational study was conducted in a referral center of cancer in Zanjan, northwest of Iran. 135 caregivers of cancer patients were recruited through convenience sampling method. The data were collected using a demographic characteristics questionnaire, Novak and Guest’s caregiver burden inventory and Pittsburgh sleep quality index (PSQI). The collected data was analyzed using descriptive and inferential statistics.Results: The mean (± SD) age of the participants was 39.71 (± 10.74) years. The mean (± SD) burden of care and sleep quality of the participants was 45.22 (± 17.75) and 8.88 (± 4.21), respectively. It was found that there is a significant positive relationship between burden of care and quality of sleep scores (r = 0.65, P < 0.001).Conclusion: cancer patients’ caregivers endure a remarkable burden of care and their sleep quality is undesirable. Results indicated that an increase in the burden of care reduces the caregiver’s quality of sleep. High burden of care and poor sleep quality may reduce the quality of the provided care that increase the costs and weakens the disease prognosis. According to the study results, reducing burden of care is an effective strategy regarding improving the caregivers’ quality of sleep that can improve the quality of provided cares by caregivers.

“Isn’t There Any Other Way than Calling the Cops?”: How Differences in Initiation of Police Intervention Influence Survivor Safety

2021 ◽  
pp. 088626052110642
Author(s):  
Nkiru Nnawulezi ◽  
Jasmine Engleton ◽  
Selima Jumarali ◽  
Samantha Royson ◽  
Christopher Murphy
Keyword(s):  
Black Women ◽  
Partner Violence ◽  
Intervention Program ◽  
Risk Level ◽  
Complex Nature ◽  
Police Intervention ◽  
Alternative Interventions ◽  
Violence Intervention ◽  
Study Results

As formal crisis responders, police are trained in de-escalation tactics that are expected to mitigate intimate partner violence and promote survivor safety. However, the alignment between expected and actual practice of police intervention varies, especially when the survivor does not initiate the call, police treat the survivor poorly, or provide an undesirable arrest outcome. At best, unsuccessful interventions do not change survivors’ risk level, and at worse, elevate their risk of experiencing harm. The purpose of this qualitative study was to explore survivors’ perspectives on the process of police intervention, specifically how variations in initiation, quality of engagement, and arrest influence survivors’ safety. Twenty-four women whose partners were in a relationship violence intervention program were recruited to participate in the study. Results showed that many survivors described a range of ongoing, strategic violence perpetrated by their partners that required intervention; yet the complex nature of the violence often extended beyond police capacity. Either survivors called the police, or they were initiated externally by neighbors or strangers; some survivors had dual initiations. Whether survivors reported that police used safety practices during the intervention was related to who initiated the police. Arrests of abusive partners were inconsistent, and they varied based on number of previous calls to the police and visible signs of injury. Survivors of color, specifically Black women, self-initiated at higher rates, experienced fewer safety strategies used by police, and had fewer arrests. No matter the outcomes of police intervention, survivors actively engaged in strategies outside of formal systems to protect themselves and their families. Study results imply that police intervention may be ill-suited to support survivors’ safety goals and highlight a need for alternative interventions focused on de-escalation and prevention.

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