Valve Operability During a Fire

2019 ◽  
Vol 141 (4) ◽  
Author(s):  
Karan Sotoodeh
Keyword(s):  
Thermal Expansion ◽  
The Body ◽  
Valve Body ◽  
Gas Processing ◽  
Oil Export ◽  
Closed Position ◽  
Fire And Explosion ◽  
Open Position ◽  
Refinery Gas

Fire and explosion are a major cause of concern for refinery, gas processing, petrochemical, and gas installations. The safest way to deal with a fire is to prevent it. However, fire prevention strategies are not always successful, and fires can happen. Therefore, valves should be designed and tested to be fire-safe. This paper reviews valve design features that can help prevent fires, including secondary sealing between the ball and body in case of losing a soft seat, a graphite fire-safe ring design for stem and seat sealing, antistatic devices, and antistatic tests to ensure that the valve is fire-safe. In addition to design considerations, a fire-safe design should be validated through tests defined in standards such as API 607, API RP 6FA, and ISO 10497. The API RP 6FA tests reviewed in this paper include seven tests that check the operability of the valve from closed to open position. A case study was done to prove the operability of a fail close 38″ pipeline ball valve on an oil export pipeline in case of fire during the first 20 s from the open to the closed position. Thermal analysis on the body of the valve proved that there was no thermal expansion inside the valve after 150 s of fire. Additionally, the maximum radial displacement on the valve body after 150 s of fire was 0.34 mm which is negligible. Thus, the valve thermal expansion did not disturb the operation of the valve after 20 s.

scholarly journals 3-Dimensional Physiologic Postural Range of the Mandible: A Computerized-Assisted Technique—A Case Study

2013 ◽  
Vol 2013 ◽  
pp. 1-11
Author(s):  
Todd Shewman
Keyword(s):  
Muscle Activity ◽  
3 Dimensional ◽  
Spatial Range ◽  
Physiologic Parameters ◽  
Closed Position ◽  
Jaw Position ◽  
Spatial Kinematics ◽  
Open Position ◽  
Antagonistic Muscles

Previous studies demonstrated that while the mandible assumes its resting position in space, antagonistic muscles should assume minimal muscle activity within a spatial range. This zone of mandibular rest has been mapped using physiologic parameters of muscle activity and incisal spatial kinematics. This case study expands on previous research by monitoring incisal and posterior jaw position and includes lateral pterygoid muscle activity, thus allowing for determining the spatial range including additional relevant coordinates and muscle activity. Four positions were evaluated: a maximum physiologic open position, a maximum physiologic closed position, physiologic rest position, and maximum physiologic protrusion position. Within the physiologic zone of rest formed by these 4 positions, the vertical and anterior borders of the envelope of function may be documented for the incisal and posterior mandible in true 3-dimensional fashion to assist the clinician in determining a physiologic interocclusal freeway space and vertical dimension of occlusion. Advantages and limitations are discussed.

HIPEREMESIS GRAVIDARUM PADA IBU HAMIL DI KLINIK BIDAN SUPRIYATI SRIBIT BERBAH SLEMAN

2019 ◽  
Vol 14 (1) ◽  
pp. 51
Author(s):  
Pramukti Dian Setianingrum ◽  
Farah Irmania Tsani
Keyword(s):  
Blood Pressure ◽  
Pregnant Women ◽  
Hyperemesis Gravidarum ◽  
Unwanted Pregnancy ◽  
The Body ◽  
Nausea And Vomiting ◽  
Daily Activities ◽  
World Health ◽  
The World

Backgroud: The World Health Organization (WHO) explained that the number of Hyperemesis Gravidarum cases reached 12.5% of the total number of pregnancies in the world and the results of the Demographic Survey conducted in 2007, stated that 26% of women with live births experienced complications. The results of the observations conducted at the Midwife Supriyati Clinic found that pregnant women with hyperemesis gravidarum, with a comparison of 10 pregnant women who examined their contents there were about 4 pregnant women who complained of excessive nausea and vomiting. Objective: to determine the hyperemesis Gravidarum of pregnant mother in clinic. Methods: This study used Qualitative research methods by using a case study approach (Case Study.) Result: The description of excessive nausea of vomiting in women with Hipermemsis Gravidarum is continuous nausea and vomiting more than 10 times in one day, no appetite or vomiting when fed, the body feels weak, blood pressure decreases until the body weight decreases and interferes with daily activities days The factors that influence the occurrence of Hyperemesis Gravidarum are Hormonal, Diet, Unwanted Pregnancy, and psychology, primigravida does not affect the occurrence of Hyperemesis Gravidarum. Conclusion: Mothers who experience Hyperemesis Gravidarum feel nausea vomiting continuously more than 10 times in one day, no appetite or vomiting when fed, the body feels weak, blood pressure decreases until the weight decreases and interferes with daily activities, it is because there are several factors, namely, hormonal actors, diet, unwanted pregnancy, and psychology.

Hypothetical Role of Growth Factors to Reduce Intervertebral Disc Degeneration Significantly through Trained Biological Transformations

2020 ◽  
Vol 26 ◽  
Author(s):  
Cristian Muresanu ◽  
Siva G. Somasundaram ◽  
Sergey V. Vissarionov ◽  
Liliya V. Gavryushova ◽  
Vladimir N. Nikolenko ◽  
...  
Keyword(s):  
Growth Factors ◽  
Blood Circulation ◽  
Seminal Fluid ◽  
Prostate Gland ◽  
The Body ◽  
Personal Experiences ◽  
Biological Transformation ◽  
The Mind

Background: From the evidence of failed injection-based growth factor therapies, it has been proposed that a naturally triggered uninterrupted blood circulation of the growth factors would be superior. Objective: We seek to stimulate discussions and more research about the possibility of using the already available growth factors found in the prostate gland and endometrium by starting a novel educable physiology, known as biological transformations controlled by the mind. Methods: We summarized the stretch-gated ion channel mechanism of the cell membrane, and offer several practical methods that can be applied by anyone, in order to stimulate and enhance the blood circulation of the growth factors from the seminal fluid to sites throughout the body. This details the practical application of our earlier published studies about biological transformations. Results: A previously reported single-patient case study has been extended, adding more from his personal experiences continually improving this novel physiological training and extending the ideas from our earlier findings in detail. Conclusion: The biological transformation findings demonstrate the need additional research to establish the benefits of these natural therapies to repair and rejuvenate tissues affected by various chronic diseases or aging processes.

Thinking about offender social reintegration: A case study of one NGO programme in the Eastern Cape Province of South Africa

2021 ◽  
pp. 002087282096742
Author(s):  
Emmison Muleya
Keyword(s):  
South Africa ◽  
Crime Prevention ◽  
The Body ◽  
Eastern Cape Province ◽  
Eastern Cape ◽  
Social Reintegration ◽  
Body Of Knowledge ◽  
Former Offenders ◽  
Offender Reintegration

Successful social reintegration is critical if we are to reduce recidivism and crime in general. This voice of people article presents a background case for why effective offender reintegration services are key in South Africa, and the Eastern Cape in particular, through an example of the Offender Reintegration programme rendered by the National Institute of Crime Prevention and Reintegration of Offenders (NICRO). Apart from the paucity of literature on offender reintegration, very few voices from people working directly with these former offenders are ever heard. Therefore, this article seeks to address this gap by contributing to the body of knowledge on offender social reintegration.

scholarly journals Insect body size changes under future warming projections: a case study of Chironomidae (Insecta: Diptera)

Hydrobiologia ◽  
2021 ◽  
Author(s):  
Rungtip Wonglersak ◽  
Phillip B. Fenberg ◽  
Peter G. Langdon ◽  
Stephen J. Brooks ◽  
Benjamin W. Price
Keyword(s):  
Body Size ◽  
Ambient Temperature ◽  
Wing Length ◽  
The Body ◽  
Mesocosm Experiments ◽  
Future Warming ◽  
Increasing Temperature ◽  
Emergence Date ◽  
Average Body

AbstractChironomids are a useful group for investigating body size responses to warming due to their high local abundance and sensitivity to environmental change. We collected specimens of six species of chironomids every 2 weeks over a 2-year period (2017–2018) from mesocosm experiments using five ponds at ambient temperature and five ponds at 4°C higher than ambient temperature. We investigated (1) wing length responses to temperature within species and between sexes using a regression analysis, (2) interspecific body size responses to test whether the body size of species influences sensitivity to warming, and (3) the correlation between emergence date and wing length. We found a significantly shorter wing length with increasing temperature in both sexes of Procladius crassinervis and Tanytarsus nemorosus, in males of Polypedilum sordens, but no significant relationship in the other three species studied. The average body size of a species affects the magnitude of the temperature-size responses in both sexes, with larger species shrinking disproportionately more with increasing temperature. There was a significant decline in wing length with emergence date across most species studied (excluding Polypedilum nubeculosum and P. sordens), indicating that individuals emerging later in the season tend to be smaller.

scholarly journals Non-destructive handheld XRF study of archaeological composite silver objects—the case study of the late Roman Seuso Treasure

2021 ◽  
Vol 13 (5) ◽  
Author(s):  
Viktória Mozgai ◽  
Bernadett Bajnóczi ◽  
Zoltán May ◽  
Zsolt Mráv
Keyword(s):  
Fluorescence Analysis ◽  
The Body ◽  
High Quality ◽  
X Ray ◽  
Composite Objects ◽  
Mechanical Attachment ◽  
Non Destructive ◽  
Made In ◽  
Late Roman

AbstractThis study details the non-destructive chemical analysis of composite silver objects (ewers, situlas, amphora and casket) from one of the most significant late Roman finds, the Seuso Treasure. The Seuso Treasure consists of fourteen large silver vessels that were made in the fourth–early fifth centuries AD and used for dining during festive banquets and for washing and beautification. The measurements were systematically performed along a pre-designed grid at several points using handheld X-ray fluorescence analysis. The results demonstrate that all the objects were made from high-quality silver (above 90 wt% Ag), with the exception of the base of the Geometric Ewer B. Copper was added intentionally to improve the mechanical properties of soft silver. The gold and lead content of the objects shows constant values (less than 1 wt% Au and Pb). The chemical composition as well as the Bi/Pb ratio suggests that the parts of the composite objects were manufactured from different silver ingots. The ewers were constructed in two ways: (i) the base and the body were made separately, or (ii) the ewer was raised from a single silver sheet. The composite objects were assembled using three methods: (i) mechanical attachment; (ii) low-temperature, lead-tin soft solders; or (iii) high-temperature, copper-silver hard solders. Additionally, two types of gilding were revealed by the XRF analysis, one with remnants of mercury, i.e. fire-gilding, and another type without remnants of mercury, presumably diffusion bonding.

scholarly journals An empirical study on open position risk assessment using VAR and regression analysis: A case study of Iranian banking industry

2012 ◽  
Vol 2 (6) ◽  
pp. 2135-2140 ◽  
Author(s):  
Mohammad Khodaei Valahzaghard ◽  
Mina Ghavidel ◽  
Mojtaba Heidar ◽  
Elmira Mahmoudzadeh
Keyword(s):  
Risk Assessment ◽  
Regression Analysis ◽  
Empirical Study ◽  
Banking Industry ◽  
Open Position

scholarly journals Heart, Mind and Body: #NoMorePage3 and the Replenishment of Emotional Energy

2021 ◽  
pp. 017084062199450
Author(s):  
Lauren McCarthy ◽  
Sarah Glozer
Keyword(s):  
The Body ◽  
Emotional Experiences ◽  
Institutional Work ◽  
Emotional Energy ◽  
Online Abuse ◽  
Mind And Body ◽  
Embodied Experiences ◽  
Feminist Organization ◽  
Online Misogyny

Emotional energy is key to disruptive institutional work, but we still know little about what it is, and importantly, how it is refuelled. This empirical paper presents an in-depth case study of ‘No More Page 3’ (#NMP3), an Internet-based feminist organization which fought for the removal of sexualized images of women from a UK newspaper. Facing online misogyny, actors engage in ‘emotional energy replenishment’ to sustain this disruptive institutional work amid emotional highs and lows. We introduce ‘affective embodiment’ – the corporeal and emotional experiences of the institution – as providing emotional energy in relation to disruptive institutional work. Affective embodiment is surfaced through alignment or misalignment with others’ embodied experiences, and this mediates how actors replenish emotional energy. Alignment with others’ embodied experiences, often connected to online abuse, means emotional energy is replenished through ‘affective solidarity’ (movement towards the collective). Misalignment, surfaced through tensions within the movement, means actors seek replenishment through ‘sensory retreat’ (movement away from the collective). This study contributes to theorization on institutional work and emotional energy by recentring the importance of the body alongside emotions, as well as offering important lessons for online organizing.

Colonial time in tension: Decolonizing temporal imaginaries

2017 ◽  
Vol 28 (3) ◽  
pp. 1221-1238 ◽  
Author(s):  
Adib ◽  
Paul Emiljanowicz
Keyword(s):  
International Relations ◽  
Body Politic ◽  
Prison System ◽  
The Body ◽  
Alternative Conceptions ◽  
Cultural Contexts ◽  
Colonial Time ◽  
Recent Trends ◽  
Political Economic

This article argues that colonial time is fractured, uneven, and co-constituted by tension. Despite coercive violence and instruments of temporal control, non-internalized alternative conceptions of time can/do exist, hybridize, and transform autonomously. We explore these tensions through an examination of post-revolution Iran's attempt to project colonial time through the prison system, and the persistence of non-internalized temporal alternatives as articulated through prisoner memoirs and narratives. Prisons and imprisonment, by removing bodies from the body politic, functions to colonize time to erase, homogenize, and mediate past, present, and future – thereby reproducing ideational-material governance. Yet prisoner memoirs and narratives reveal this process to be incomplete as the agency of individuals to retain, create, and testify provide indications of non-internalized decolonial temporal imaginaries. In taking into consideration our case study and recent trends in anthropology, we inject into the field of International Relations an understanding of colonial time as tension, which can be applied to political-economic and cultural contexts in which time is actively being colonized.

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