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2021 ◽  
Vol 11 (23) ◽  
pp. 11399
Author(s):  
Miroslav Pástor ◽  
Pavol Lengvarský ◽  
Martin Hagara ◽  
Alžbeta Sapietová ◽  
Patrik Šarga

Preloaded bolted connections are one of the most used approaches for anchoring steel structures and equipment. Preload is induced by a mechanical tightening of the nut with the required torque. In the case of anchor bolts embedded in a concrete base, the prescribed tightening procedure has to be followed for safe and reliable operation. The present paper addresses the problem of anchoring a new casting pedestal using the original anchor bolts. The aim was to verify the original anchoring system’s reliable and safe operation, taking into account the current condition of the bolts. The analysed anchoring bolts are subjected to cyclic (disappearing) stress during the rotation of the casting pedestal. If the interplays between the anchor bolt and the concrete foundation were damaged, production would shut down, resulting in high economic losses. For this reason, the authors used a modified nut with a lightened first thread when investigating the actual state of the anchoring and setting the required preload. The shape and dimensions of the nut were determined based on the results of numerical modelling. The experimental measurements consisted of two phases. In the first phase, the values of axial forces in the anchor bolts at the required preload were set using the designed dynamometers. The second phase was focused on the operational measurements. The methodology of measuring the axial forces and the interpretation of the results obtained, including a comprehensive view of the anchoring safety, provides relevant evidence of the functionality and effectiveness of the proposed solution. Based on the results of the operational measurement and the prescribed handling of the casting pedestal, the lifespan of the anchoring was determined to be 3650 days under the loading cycles to date.


2021 ◽  
pp. 153445
Author(s):  
Jacqueline I. Reeve ◽  
Benjamin J. Schuessler ◽  
William E. Frazier ◽  
David P. Field ◽  
Vineet V. Joshi

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Aruna M. Kamath ◽  
Maximilian G. Thom ◽  
Casey K. Johanns ◽  
Katie Panhorst Harris ◽  
Karla Schwarzbauer ◽  
...  

Abstract Background Intrapartum-related hypoxic events, or birth asphyxia, causes one-fourth of neonatal deaths globally and in Mesoamerica. Multidimensional care for asphyxia must be implemented to ensure timely and effective care of newborns. Salud Mesoamérica Initiative (SMI) is a performance-based program seeking to improve maternal and child health for low-income areas of Central America. Our objective was to assess the impact of SMI on neonatal asphyxia care in health centers and hospitals in the region. Methods A pre-post design. Two hundred forty-eight cases of asphyxia were randomly selected from medical records at baseline (2011–2013) and at second-phase follow-up (2017–2018) in Mexico (state of Chiapas), Honduras, Nicaragua, and Guatemala as part of the SMI Initiative evaluation. A facility survey was conducted to assess quality of health care and the management of asphyxia. The primary outcome was coverage of multidimensional care for the management of asphyxia, consisting of a skilled provider presence at birth, immediate assessment, initial stabilization, and appropriate resuscitation measures of the newborn. Data were analyzed using multivariable logistic regression. Results Management of asphyxia improved significantly after SMI. Proper care of asphyxia in intervention areas was better (OR = 2.4; 95% CI = 1.3–4.6) compared to baseline. Additionally, multidimensional care was significantly higher in Honduras (OR = 4.0; 95% CI = 1.4–12.0) than in Mexico. Of the four multidimensional care components, resuscitation showed the greatest progress by follow-up (65.7%) compared to baseline (38.7%). Conclusion SMI improved the care for neonatal asphyxia management across all levels of health care in all countries. Our findings show that proper training and adequate supplies can improve health outcomes in low-income communities. SMI provides a model for improving health care in other settings.


2021 ◽  
Vol 8 (1-2) ◽  
pp. 39-47
Author(s):  
Anja Bek ◽  
Goran Jeftić ◽  
Stjepan Strelec ◽  
Jasmin Jug

One of the most important mechanical properties is shear strength. It is conditioned by the value of the maximum shear stress that the soil can withstand before failure. Exceeding the shear strength causes one particle to slide next to another, causing the failure of soil. The shear strength of the soil for effective stresses is1 a combination of drained strength parameters: internal friction angle (φ) and cohesion (c) defined by the Mohr-Coulomb failure criterion. It is determined “in situ” and by laboratory experiments. Direct shear is the oldest and the simplest laboratory experiment to determine the shear strength of the soil. The first phase of experiment is specimen consolidation under specific vertical stress, and in the second phase specimens are sheared at a given shear rate, depending on the consolidation properties of the soil. Cohesionless soils are sheared at up to 100 times higher shear rate compared to cohesive soils. Shear rate and drainage conditions affect the magnitude of soil strength parameters. The paper is based on the comparison and demonstration of the influence of different shear rates on the peak and residual shear strength in the direct shear device. The tests were performed on two samples of low plasticity clay (CL) and one sample of high plasticity clay (CH).


2021 ◽  
Vol 12 ◽  
Author(s):  
Mariana Pinto da Costa ◽  
Phone Pal Advisory Groups

The literature suggests that volunteering can be used to address social isolation and support patients with psychosis in the community. However, many expect in person meetings, requiring a greater effort of availability and commitment. There is therefore a need for more flexible, easily accessible support. Volunteering via smart-phone could be a useful intervention for people with psychosis. One patient and one volunteer have been matched for a duration of 12 weeks, and participants have been encouraged to communicate through a variety of communication methods (audio calls, video calls, text messages, WhatsApp messages and e-mails). The Phone Pal study aimed to investigate the feasibility of recruitment, participant retention, data collection procedures, intervention usage of the methods of communication and changes in outcome data. At baseline and follow-up outcome measures collected from patients and volunteers included their quality of life, physical activity, self-esteem and social comparison. Additional outcomes assessed patients' attachment, social contacts and symptoms; for volunteers, their social distance was evaluated. At follow-up both patients and volunteers rank their perception of their relationship with each other. This mixed method feasibility study has been conducted in two phases, the first stage evaluating a smaller sample of patients and volunteers recruited in London, and then a second phase with a larger sample of volunteers recruited from across the United Kingdom.Trial registration: ISRCTN17586238.


Author(s):  
N.I. Grechanyuk ◽  
V.G. Grechanyuk ◽  
A.F. Manulyk

In this article, the present-day problems of microporous condensed materials obtained from the vapor phase are discussed. The pore sizes are regulated by the amount of the second phase concentration and the deposition temperature. The oxides, fluorides, and sulfides can be used as the second phase and non-removable inclusions. The open porosity can be regulated from 0% to 50 %of the porosity and with average porose sizes of 0.1 to 8 µm. The condensed micro-porous materials can be deposited in coating form or the form of massive bulk sheet materials with a thickness of up to 6 mm and a diameter of 1m.


2021 ◽  
Vol 13 (47) ◽  
pp. 135-136
Author(s):  
Ana Luiza Ribeiro Almeida ◽  
Ester Beghini Lacerda ◽  
Ana Gabriela Barros e Silva ◽  
Nathalye Vasconcellos de Almeida Rezende ◽  
Angelo Liparini Pereira ◽  
...  

Background: the endoparasitosis affects dairy goats in worldwide distribution. This impacts the economical activity and implies in eminent risk of animal looses by helminths blood depletion (Nogueira, 2010). Resistance to all therapeutic drugs is reported, the parasitism implies to elevation of production costs, toxic residues in milk and environment, frequently monitoring of ocular mucosa and healthy status (Cavalcanti, 2007; Silva, 2010). Many publications reports Fecal Eggs Count (FEC) FEC reduction in sheeps with homeopathy (Chagas, 2008; Zacharias 2008; Neves, 2012; Falbo, 2013). This work continues the study of previous assessment with young females caprines, but now during the breeding season and multipara pregnants. The under field conditions intends to address the value of this complex medicine in the real life situation of a caprinoculture routine and the animal zootechnical production phases. Aims: this work determined the parasite load by FEC during the periods of breeding season and pregnancy of dairy goats with commercial populational homeopathy. Methodology: Fifteen (15) adult multipara goats (CAPRA AERGICUS HIRCUS) aged 4.4 ± 1.4 years old were randomly enrolled into two groups. The animals has dairy predominance of Alpine and Saanen breeds and were fed by maize and sugar cane silage. Routine measures to reduce the natural parasitism infection included keeping them in elevated houses with slatted floor with access to paddock star grass with time restrictions to the hottest hours in the day. They received the albendazole antihelmintic drenching before each of the phases. The weekly FEC was performed in triplicate with the McMaster Egg Counting Chamber Technique and the optical microscope. The treatment with 10g-animal-day CapriOvi Verm 100 RealH (Brazil) was given daily among both phases, six times a week with individual oral administration, the powder was diluted (not sucussed) in a plastic cup with tap water and given in a 10mL syringe. The control group received only tap water in the same way but brand new separated set of disposable materials. Each phase had evaluating period of 10 and 11 weeks respectively. The first phase has the four weeks breeding season, previously stimulated by light program, with sex mating on the middle and the second phase the animals was pregnant for 2 to 4 months. Results: The FEC kept above 500 eggs during 7 weeks at the breeding season-1st phase but grew as expected in the pregnancy-2nd phase. The FEC was significantly reduced during the 2nd phase (p-value < 0.01) but not in the breeding season-1st phase (p-value = 0.28), despite being lower than the control. The two-way ANOVA showed that treatment in the 2nd phase affected the results [F 1/143 = 9.04, p = 0.0031] as the time does [F 1/143 = 53.29, p < 0.0001]: there were interactions between factors [F 1/143 = 3.15, p = 0.0011]. The two-way ANOVA showed that treatment in the 1nd phase affected the results [F 1/130 = 0.30, p = 0.58] as the time [F 1/130 = 1.24, p = 0.28]: there were no interactions between factors [F 1/130 = 0.58, p = 0.81]. Surprisingly there was absence of growing FEC in the breeding season, at this phase the dry goats and may have better immune response to the endoparasites than the stress of the pregnancy. Our group suppose the stressed animal model is more susceptible and may show better the effects of treatment reducing the FEC in a high challenge situation. How it influences the way of action of ultra high dilutions remains a very interesting question for guide future works. Conclusion: the populational homeopathy product CapriOvi Verm 100 RealH has shown the reduction of the FEC during the pregnancy of dairy goats.


Metals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1933
Author(s):  
Adit Sharma ◽  
Vladislav Zadorozhnyy

Metallic glasses are known for their mechanical properties but lack plasticity. This could be prevented by combining them with other materials or by inducing a second phase to form a composite. These composites have enhanced thermo-physical properties. The review paper aims to outline a summary of the current research done on metallic glass and its composites. A background in the history, properties, and their applications is discussed. Recent developments in biocompatible metallic glass composites, fiber-reinforced metallic glass, ex situ and in situ, are discussed.


2021 ◽  
Vol 71 (11) ◽  
pp. 2524-2530
Author(s):  
Yasmeen Wajid ◽  
Humaira Jami ◽  
Aisha Zubair ◽  
Arooj Mujeeb

Objective: To translate and evaluate the psychometric properties of the Clinically Useful Anxiety Outcome Scale on Urdu-speaking population. Method: The observational validation study was conducted in Rawalpindi and Islamabad, Pakistan, from January 2018 to December 2019 in two phases. In the first phase, the Clinically Useful Anxiety Outcome Scale was forward and backward translated, while in the second phase, the translated scale was validated on a human sample comprising subjects in clinical and nonclinical settings. Item-to-total correlation, internal consistency and test-retest reliabilities were checked with inter-group comparisons. To find out the level of language equivalence between the original and the translated versions, a separate sample of bilingual participants was raised. Data was analysed using SPSS 22. Continue


2021 ◽  
Vol 2 (2) ◽  
pp. 115-123
Author(s):  
Basil Thomas

The surplus number of comic magazines that existed in Keralam even before the official formation of the state in 1956 reinstates the affinity of the Malayalam speaking people towards cartoons. The social situations and the functioning of various institutions like education and employment were a source of inspiration for the cartoonists from Keralam. The high literacy rate of Keralam is not the product of a single day. The foundation work of this had started even before the formation of the state. This paper tries to analyse the education system of Keralam portrayed in the cartoons of cartoonists Toms, Aravindan and Thomas. The cartoons of Toms, Aravindan and Thomas portray the day to day life of Keralam in their social cartoons, including the school life and college life of the period of the second half of the twentieth century. There are two phases in the development of the education sector in Keralam: the first phase focusing mass education where the major capital investor was the state itself and private investment was not encouraged. The second phase witnessed a fast paced growth and urbanization after the 1970s because of the large scale migrant remittance. The changing faces of the education system of Keralam can be seen in the cartoons of these select cartoonists.


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