scholarly journals TO THE QUESTION OF HYDRAULIC COMPATIBILITY OF REPAIR MATERIALS IN FREE-FLOW PIPES IN TRENCHLESS RENOVATION

2016 ◽  
Vol 2 (1) ◽  
pp. 37-40
Author(s):  
Косухин ◽  
Mikhail Kosukhin ◽  
Константиневская ◽  
Liliya Konstantinevskaya
Keyword(s):  
Structural Strength ◽  
Experimental Studies ◽  
Free Flow ◽  
Experimental Unit ◽  
Negative Consequences ◽  
Repair Materials ◽  
Flow Motion ◽  
Definition Of ◽  
To Receive ◽  
Tube Space

Experimental studies were conducted in order to determine hydraulic compatibility of repair materials in trenchless renovation of free-flow water outlet pipelines, experimental unit for liquid flow regime investigation during free-flow motion for definition of flow hydraulic element were developed and introduced. It was shown that results of experimental studies allows to receive calculated values of coefficients of relative roughness for three types of polymeric pipes, which can be used as repair materials for pulling in old pipelines. It was observed that during pipelines renewal in such way, it is necessary backfilling of tube space, eliminating formation of polymeric pipelines waviness because of temperature drops and exclusive negative consequences of hydraulics and structural strength

The methodology of experimental research of the feed components extrusion process in order to improve its energy performance

2020 ◽  
pp. 147-152
Author(s):  
E. M. Ratnikov ◽  
D. O. Milko
Keyword(s):  
Experimental Studies ◽  
Energy Performance ◽  
Extrusion Process ◽  
Mathematical Methods ◽  
Screw Extruder ◽  
Mathematical Planning ◽  
Factors Affecting ◽  
Extrusion Processing ◽  
Definition Of

Annotation Purpose. Development of a program and methods for conducting experimental studies of the extrusion process with the definition of parameters and modes of operation of the extruder to improve its energy performance. Methods. Methods of mathematical statistics, synthesis, analysis, description and modeling were used. Results. The application of mathematical methods, in particular mathematical planning, reduces the number of experiments several times, and allows to evaluate the role of influencing factors, obtain a mathematical model of the process and determine the optimal conditions for its parameters and modes, etc. Conclusions. The methodology for experimental studies of a screw extruder is presented with the necessary equipment and methodology for processing the obtained experimental data. A mathematical method of planning, which reduces the number of experiments several times, allows us to evaluate the role of factors affecting productivity and energy intensity is presented. Keywords: extruder, auger, nutrients, research methodology, extrusion, processing, feed.

scholarly journals AB0677 REVISING THE DEFINITION OF REACTIVE ARTHRITIS AND DIFFERENTIATION FROM UNDIFFERENTIATED SPONDYLOARTHRITIS

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 1633.2-1634
Author(s):  
F. Cosan ◽  
O. M. Gedar
Keyword(s):  
Causative Agent ◽  
Reactive Arthritis ◽  
Case Reports ◽  
Experimental Studies ◽  
Classification Criteria ◽  
General Definition ◽  
Parasitic Infections ◽  
Undifferentiated Spondyloarthritis ◽  
Classical Definition ◽  
Definition Of

Background:Reactive arthritis (ReA) is defined by 1999 ACR criteria as arthritis preceding a bacterial genitourinary (GUS) or gastrointestinal (GIS) infection in 3 days-6 weeks and evidence of triggering infection. Recently, ReA is classified as SpA and patients who do not fulfill SpA criteria are classified as undifferentiated spondyloarthritis (USpA) according to ASAS/EULAR SpA classification criteria.Objectives:In several case reports which are associated with other infective agents are reported and the definition is extended for some clinicians so that SpA which is occurred after any infection is called as ReA. On the other hand, some researchers still accept the classical definition of ReA. The problem with the heterogeneity of opinions and unstandardized definition of ReA hinders studies about pathogenesis and standardization of treatments. In this study, we aimed to determine the spectrum of the use of the definition of reactive arthritis in publications in PubMed between 2009-2019.Methods:The ReA keyword is searched in PubMed for the years between 2009-2019. 248 different publications have been identified and included in this research. 89 articles, 47 reviews, 108 case reports, 2 guidelines, and 2 editorials reviewed for the definition of ReA.Results:Only 42.7% (106 patients) of these publications meet the classical definition which suggests ReA after only GIS and GUS infections. In 4 (1.6%) of the publications ReA was defined after GIS, GUS and oropharyngeal infections; in 3 (1,2%) of the publications after any bacterial infection; in 9 (3.6%) of the publications after any infection. In 8 (3.2%) of the publications, ReA and USPA was used correspondingly. In 39 (15,7%) of the publications the term agent related, ReA was used without making a general definition for ReA. 79 publications (31,9%) have not defined ReA.According to causative agent and ReA relationship, in 64 (24,6%) general infective agents, in 75 (30,2%) classical agents, in 22 (8,9%) other bacterial agents, in 23 (9,3%) streptococcus, in 10(4%) intravesical BCG, in 6 (2.4%) HIV, in 6 (2.4%) tuberculosis, in 12 (4,8%) clostrudium difficle, in 2 (0.8%) parasites were reported. In 31 (12,5%) of the publications the causative agent for the ReA was unknown, the diagnosis was made clinically.Conclusion:In this study, it is aimed to draw attention terminology intricacy and the need for the standardization of the definition of ReA and USpA. It is clear that to standardize the definition of Rea and USpA is necessary. Between 2009-2019 there are reported cases diagnosed as ReA associated with bacterial infections (especially with Clostridium difficile, streptococcus and tuberculosis infections), and viral infections (by a majority with HIV), and parasitic infections. It is not clear if we need to define them classically or define them as USPA. Another important consideration is the necessity of extended laboratory investigations to find out the real causative agent even if the patient is clinically diagnosed with ReA. The requirement of the differentiation between ReA and USpA must be revealed for therapeutic researches.References:[1]A proposal for the classification of patients for clinical and experimental studies on reactive arthritis. Pacheco-Tena C, Burgos-Vargas R, Vázquez-Mellado J, Cazarín J, Pérez-Díaz JA. J Rheumatol. 1999 Jun;26(6):1338-46.[2]The Assessment of SpondyloArthritis International Society classification criteria for peripheral spondyloarthritis and for spondyloarthritis in general. Rudwaleit M, van der Heijde D, Landewé R, Akkoc N, Brandt J, Chou CT, Dougados M, Huang F, Gu J, Kirazli Y, et al. Ann Rheum Dis. 2011;70:25–31.Disclosure of Interests:None declared

scholarly journals Barriers to Incident Reporting among Nurses: A Qualitative Systematic Review

2021 ◽  
pp. 019394592199944
Author(s):  
Moataz Mohamed Maamoun Hamed ◽  
Stathis Konstantinidis
Keyword(s):  
Systematic Review ◽  
Methodological Quality ◽  
Incident Reporting ◽  
Negative Consequences ◽  
Incident Reporting Systems ◽  
Qualitative Systematic Review ◽  
Blame Culture ◽  
Critical Appraisal Skills ◽  
Definition Of

Incident reporting in health care prevents error recurrence, ultimately improving patient safety. A qualitative systematic review was conducted, aiming to identify barriers to incident reporting among nurses. Joanna Briggs Institute methodology for qualitative systematic reviews was followed, with data extracted using JBI QARI tools, and selected studies assessed for methodological quality using Critical Appraisal Skills Program (CASP). A meta-aggregation synthesis was carried out, and confidence in findings was assessed using GRADE ConQual. A total of 921 records were identified, but only five studies were included. The overall methodological quality of these studies was good and GRADE ConQual assessment score was “moderate.” Fear of negative consequences was the most cited barrier to nursing incident reporting. Barriers also included inadequate incident reporting systems and lack of interdisciplinary and interdepartmental cooperation. Lack of nurses’ necessary training made it more difficult to understand the importance of incident reporting and the definition of error. Lack of effective feedback and motivation and a pervasive blame culture were also identified.

scholarly journals PSVIII-35 Late-Breaking Abstract: Administration of an appeasing substance at castration improves performance of pre-conditioned beef crossbred steers

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 347-348
Author(s):  
Kelsey Schubach ◽  
Bruno I Cappellozza ◽  
Marcos Renato Burim ◽  
André Velasco ◽  
Fernando Sagrado ◽  
...  
Keyword(s):  
Feed Efficiency ◽  
Minimum Distance ◽  
Descriptive Analysis ◽  
Bos Indicus ◽  
Experimental Unit ◽  
Water Restriction ◽  
Improve Performance ◽  
Treatment Groups ◽  
Improved Performance ◽  
To Receive

Abstract Alternatives that alleviate stress-related responses and improve performance of the beef cattle herd are imperative and deserve further investigation. In previous trials, administration of the bovine appeasing substance (BAS) has improved performance of newly-weaned and feedlot received beef animals, as well as reduced the risk of dark, firm, and dry (DFD) cuts in carcass obtained from Bos indicus cattle. Therefore, this study was designed to evaluate the effects of BAS administration at castration on pre-conditioning performance of crossbred beef animals. On day 0, 390 crossbred Angus × Nellore animals were ranked by initial shrunk BW (255 ± 21.1 kg) and assigned to receive or not (CON) 5 mL/head of BAS (SecureCattle; Nutricorp, Araras, SP, Brazil) immediately before castration. From d 0 to 30, animals within treatments were maintained in 2 feedot pens with a minimum distance (300 m) to avoid contact between treatment groups and received a grass hay-based diet (70:30 roughage:concentrate ratio) ad libitum. On day 30, animals were individually weighed following 16 hours of feed and water restriction. Hence, a descriptive analysis was performed to evaluate pen dry matter intake (DMI) and feed efficiency (FE). Animal was considered the experimental unit and all data were analyzed using the PROC MIXED procedure of SAS (version 9.4; SAS Inst. Inc., Cary, NC). Bovine appeasing substance administration at castration improved ADG and BW change (P < 0.0001) compared with CON cohorts (0.983 vs. 1.155 kg/d and 29.5 vs. 34.6 kg for ADG and BW change, respectively). Total DMI was similar among treatments when reported as kg/d (6.70 vs. 6.75 kg) or % of BW (2.48 vs. 2.48%), whereas FE was dramatically improved in BAS-administered animals (146 vs. 172 g/kg for CON and BAS, respectively). In summary, BAS administration improved performance of crossbred beef animals for 30 days post-castration.

scholarly journals It Is Not Just Mortality: A Call From Chile for Comprehensive COVID-19 Policy Responses Among Older People

2020 ◽  
Author(s):  
Pablo Villalobos Dintrans ◽  
Jorge Browne ◽  
Ignacio Madero-Cabib
Keyword(s):  
Older People ◽  
National Level ◽  
Health Issues ◽  
Negative Consequences ◽  
Access To Health Services ◽  
Term Care ◽  
Policy Responses ◽  
Level Data ◽  
Definition Of

Abstract Objective Provide a synthesis of the COVID-19 policies targeting older people in Chile, stressing their short- and long-term challenges. Method Critical analysis of the current legal and policy measures, based on national-level data and international experiences. Results Although several policies have been enacted to protect older people from COVID-19, these measures could have important unintended negative consequences in this group’s mental and physical health, as well as financial aspects. Discussion A wider perspective is needed to include a broader definition of health—considering financial scarcity, access to health services, mental health issues, and long-term care—in the policy responses to COVID-19 targeted to older people in Chile.

scholarly journals Evaluating Others If They Stand Up for Their Moral Convictions, and Evaluating Ourselves If We Don't Stand Up

2021 ◽  
Author(s):  
Florien M. Cramwinckel ◽  
Kees van den Bos ◽  
Eric van Dijk
Keyword(s):  
Social Environment ◽  
Sexual Minorities ◽  
Experimental Studies ◽  
Moral Courage ◽  
Negative Consequences ◽  
Equal Rights ◽  
Moral Beliefs ◽  
Moral Principles ◽  
Situational Demands ◽  
Moral Convictions

AbstractActing on one’s moral principles is not always easy. Upholding one’s moral beliefs may run counter to one’s social environment or situational demands. It may often cause people to remain silent on their convictions, while at the same time some may show the moral courage to speak out. How do people evaluate those who do stand up, and how does it affect their self-evaluations? In two experimental studies (Ns = 207 and 204), we investigated both types of evaluations. The studies demonstrate that people who failed to uphold their moral beliefs still had positive evaluations of others who showed moral courage. More specifically, pro-gay participants who went along with writing an anti-gay essay denouncing equal rights for sexual minorities had positive evaluations of another person who spoke up and refused this task. The failure to display moral courage had negative consequences for participants’ self-concepts. In Experiment 1, we show that pro-gay participants’ positive self-concepts were lowered after writing an anti-gay essay (vs. a pro-gay essay). In Experiment 2, we reveal that participants' positive self-concepts were lowered only when they were confronted with morally courageous behavior and their own failure to uphold their moral beliefs was visible to the experimenter.

Defining an Adequate Dose of Acupuncture Using a Neurophysiological Approach – a Narrative Review of the Literature

2008 ◽  
Vol 26 (2) ◽  
pp. 111-120 ◽  
Author(s):  
Adrian White ◽  
Mike Cummings ◽  
Panos Barlas ◽  
Francesco Cardini ◽  
Jacqueline Filshie ◽  
...  
Keyword(s):  
Systematic Reviews ◽  
Acupuncture Treatment ◽  
Experimental Studies ◽  
Basic Research ◽  
Strong Argument ◽  
Treatment Protocols ◽  
Negative Results ◽  
Adequate Dose ◽  
Definition Of ◽  
Patient’S Perception

Many different styles of acupuncture practice exist, and lack of agreement on the optimal acupuncture treatment for any particular condition may mean that some patients do not receive the best treatment. This uncertainty also makes the negative results of sham controlled trials difficult to interpret. Unless we can be sure that both adequate acupuncture and an inactive sham were used in a particular trial, then that trial should not be interpreted as dismissing acupuncture for that condition. Acupuncture practice clearly involves much more than needling procedures, but there is a strong argument for elucidating the role of those needling procedure first. The components of acupuncture needling procedures have been described in the STRICTA document, but it is also clear that the patient's perception of needling is relevant for the outcome of treatment. We therefore recommend the concept of ‘dose’ of acupuncture needling, which should include both the stimulus given to the patient, and certain aspects of the patient's perceptions and response that are known to be linked to the subsequent therapeutic response. We propose the following definition of dose: the physical procedures applied in each session, using one or more needles, taking account of the patient's resulting perception (sensory, affective and cognitive) and other responses (including motor). The dose may be affected by the state of the patient (eg nervous, immune and endocrine systems); different doses may be required for different conditions. The constituents of an adequate dose can be established initially by clinical opinion and subsequently by empirical evidence from experimental studies, which may be either clinical or basic research studies. Systematic reviews which do not consider the adequacy of the acupuncture treatment may have unreliable conclusions. Out of 47 recent systematic reviews, only six have applied some criteria for adequacy. Five used a rating system or conducted a subgroup analysis, and one excluded studies from the analysis altogether if they did not meet criteria for adequacy. Research into what constitutes an adequate dose of acupuncture has long been neglected and is now urgent. Clinical studies that compare the effects of different treatment protocols are probably the most reliable source of evidence, and may also demonstrate a dose-response relationship.

scholarly journals RISK ECONOMY

2018 ◽  
pp. 16-55
Author(s):  
S. SOLODOVNICOV.
Keyword(s):  
High Tech ◽  
Negative Consequences ◽  
Theoretical Substantiation ◽  
Economic Concept ◽  
Stage Of Development ◽  
Global Catastrophe ◽  
Knowledge Intensive ◽  
Definition Of ◽  
Political Economic ◽  
Current Stage

The article is devoted to the theoretical substantiation of a new social paradigm – risk economy. The current stage of society development and the economy is characterized by a critical increase in financial, technological and technological, political and economic, geo-economic and other uncertainties. It is impossible to understand their ontological nature and reveal the phenomenological specificity without a meaningful definition of the current stage of development of the economic system of society. The article consistently revealed the characteristics of current society, which allowed the author to present a new political and economic concept that characterizes the current stage of development of society and the economy – the risk economy. The risk economy is an economy of high-tech and knowledge-intensive industries, characterized by the highest degree of political, economic, technological, financial and environmental uncertainties and risks. These risks are becoming comprehensive, many of them are in principle unpredictable, and their possible negative consequences could lead Humanity to a global catastrophe. Understanding the nature of risk economics is critically important for developing effective political and economic mechanisms to counter these risks.

scholarly journals Evaluating the Durability of Green Cement Mortar Using Ultrasonic Pulse Velocity

2021 ◽  
Vol 877 (1) ◽  
pp. 012049
Author(s):  
Ali Abdulridha ◽  
Saif S. AlQuzweeni ◽  
Rasha S. AlKizwini ◽  
Zahra A. Saleh ◽  
K. S. Hashem
Keyword(s):  
Silica Fume ◽  
Cement Mortar ◽  
Experimental Studies ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Negative Consequences ◽  
Kiln Dust

Abstract Various experimental studies have highlighted the negative consequences of Portland cement on health and the environment, such as toxic emissions and alkaline sewage. The development of environmentally acceptable substitutes for cement is thus one of the objectives of current investigations. The proposed environmental alternatives to cement, nevertheless, might have detrimental impacts on the concrete’s characteristics. This investigation intends to study the suitability as alternatives to cement in cement mortar, using industrial wastes like silica fume and cement kiln dust. As a replacement for cement, the cement mortars developed in this research continue from 0% to 60% silica fume and cement kiln dust. Ultrasonic pulse velocity tests at 1 to 4 weeks of age were conducted on hardened specimens. The findings showed that a low reduction in the pulse velocity resulted from high proportions of silica fume and cement kiln dust replacements, whereas an improvement in the characteristics of the mortars with low replacement ratios. Using low kiln dust and silica fume of 20 to 40%, the durability of mortars may increase.

scholarly journals SYSTEM AND CYBERNETIC APPROACH TO DEFINITION OF THE CONCEPT “SAFETY”

2015 ◽  
pp. 18-25
Author(s):  
Alexandr Matveev ◽  
Vladimir Matveev
Keyword(s):  
Necessary Condition ◽  
Target Orientation ◽  
Definition Of ◽  
To Receive

The analysis of the existing approaches to definition of the concept “safety” is given. The target orientation in the course of safety is proved. The reasons capable to break safety of the operated systems are established. On the basis of system and cybernetic approach and the formalized principle of systemacity definition of the concept “safety” was received. It is revealed that a necessary condition of safety is predictability of behavior of system in the environment including and other subjects of management, due to the corresponding formation of vectors of opportunities and management of system, allowing to receive the corresponding ratio of existential conditions of system and functioning of system, allowing to reach system of the demanded efficiency indicator level (target mission). It is received that a necessary condition of steady stay of system (object) in the environment is existence of knowledge of this Wednesday, possible options of behavior of system concerning factors of the environment and skills of management of system.

Sign in / Sign up

Export Citation Format

Share Document