The Adverse Effect of Monovalent Ions on Wettability Alteration Rate. A Case Study on Akanskoe Reservoir in Russia - Tatarstan

2018 ◽  
Author(s):  
M. Rezaei Koochi ◽  
A. Shakirov
Keyword(s):  
Adverse Effect ◽  
Wettability Alteration ◽  
Monovalent Ions

scholarly journals Application of transparent microperforated panel to acrylic partitions for desktop use: A case study by prototyping

2021 ◽  
Author(s):  
Kimihiro Sakagami ◽  
Midori Kusaka ◽  
Takeshi Okuzono ◽  
Shigeyuki Kido ◽  
Daichi Yamaguchi
Keyword(s):  
Adverse Effect ◽  
Sound Absorption ◽  
Acoustic Environment ◽  
Actual Use ◽  
Acrylic Sheet ◽  
Absorption Performance ◽  
The Subject ◽  
Droplet Penetration ◽  
Absorption Characteristics

There are various measures currently in place to prevent the spread of COVID-19; however, in some cases, these can have an adverse effect on the acoustic environment in buildings. For example, transparent acrylic partitions are often used in eating establishments, meeting rooms, offices, etc., to prevent droplet infection. However, acrylic partitions are acoustically reflective; therefore, reflected sounds may cause acoustic problems such as difficulties in conversation or the leakage of conversation. In this study, we performed a prototyping of transparent acrylic partitions to which a microperforated panel (MPP) was applied for sound absorption while maintaining transparency. The proposed partition is a triple-leaf acrylic partition with a single acrylic sheet without holes between two MPP sheets, as including a hole-free panel is important to a possible droplet penetration. The sound absorption characteristics were investigated by measuring the sound absorption in a reverberation room. As the original prototype showed sound absorption characteristics with a gentle peak and low values due to the openings on the periphery, it was modified by closing the openings of the top and sides. The sound absorption performance was improved to some extent when the top and sides were closed, although there remains the possibility of further improvement. This time, only the sound absorption characteristics were examined in the prototype experiments. The effects during actual use will be the subject of future study.

Impact of clay type and water composition on low salinity water injection – visualisation approach

2018 ◽  
Vol 58 (1) ◽  
pp. 51 ◽  
Author(s):  
Tammy Amirian ◽  
Manouchehr Haghighi
Keyword(s):  
Oil Recovery ◽  
Wettability Alteration ◽  
Oil Film ◽  
Low Salinity ◽  
Water Composition ◽  
Low Salinity Water ◽  
Monovalent Ions ◽  
Salinity Water ◽  
The Impact ◽  
Clay Type

Low salinity water (LSW) injection as an enhanced oil recovery method has attracted much attention in the past two decades. Previously, it was found that the presence of clay such as kaolinite and water composition like the nature of cations affect the enhancement of oil recovery under LSW injection. In this study, a pore-scale visualisation approach was developed using a 2D glass micromodel to investigate the impact of clay type and water composition on LSW injection. The glass micromodels were coated by kaolinite and illite. A meniscus moving mechanism was observed and the oil–water interface moved through narrow throats to large bodies, displacing the wetting phase (oil phase). In the presence of kaolinite, the effect of LSW injection was reflected in the change to the wettability with a transition towards water-wetness in the large sections of the pore walls. The advance of the stable water front left behind an oil film on the oil-wet portions of pore walls; however, in water-wet surfaces, the interface moved towards the surface and replaced the oil film. As a result of wettability alteration towards a water-wet state, the capillary forces were not dominant throughout the system and the water–oil menisci displaced oil in large portions of very narrow channels. This LSW effect was not observed in the presence of illite. With regard to the water composition effect, systems containing divalent cations like Ca2+ showed the same extent of recovery as those containing only monovalent ions. The observation indicates a significant role of cation exchange in wettability alteration. Fines migration was insignificant in the observations.

scholarly journals Application of transparent microperforated panel to acrylic partitions for desktop use: A case study by prototyping

2021 ◽  
Author(s):  
Kimihiro Sakagami ◽  
Midori Kussaka ◽  
Takeshi Okuzono ◽  
Shigeyuki Kido ◽  
Daichi Yamaguchi
Keyword(s):  
Adverse Effect ◽  
Future Study ◽  
Sound Absorption ◽  
Acoustic Environment ◽  
Actual Use ◽  
Acrylic Sheet ◽  
Absorption Performance ◽  
The Subject ◽  
Absorption Characteristics

There are various measures currently in place to prevent the spread of COVID-19; however, in some cases, these can have an adverse effect on the acoustic environment in buildings. For example, transparent acrylic partitions are often used in eating establishments, meeting rooms, offices, etc., to prevent droplet infection. However, acrylic partitions are acoustically reflective; therefore, reflected sounds may cause acoustic problems such as difficulties in conversation or the leakage of conversation. In this study, we performed a prototyping of transparent acrylic partitions to which a microperforated panel (MPP) was applied for sound absorption while maintaining transparency. The proposed partition is a triple-leaf acrylic partition with a single acrylic sheet without holes between two MPP sheets. The sound absorption characteristics were investigated by measuring the sound absorption in a reverberation room. As the original prototype showed sound absorption characteristics with a gentle peak and low values due to the openings on the periphery, it was modified by closing the openings of the top and sides. The sound absorption performance was improved to some extent when the top and sides were closed, although there remains the possibility of further improvement. This time, only the sound absorption characteristics were examined in the prototype experiments. The effects during actual use will be the subject of future study.

scholarly journals Application of transparent microperforated panel to acrylic partitions for desktop use: A case study by prototyping

2021 ◽  
Author(s):  
Kimihiro Sakagami ◽  
Midori Kusaka ◽  
Takeshi Okuzono ◽  
Shigeyuki Kido ◽  
Daichi Yamaguchi
Keyword(s):  
Adverse Effect ◽  
Sound Absorption ◽  
Acoustic Environment ◽  
Actual Use ◽  
Acrylic Sheet ◽  
Absorption Performance ◽  
The Subject ◽  
Droplet Penetration ◽  
Absorption Characteristics

There are various measures currently in place to prevent the spread of COVID-19; however, in some cases, these can have an adverse effect on the acoustic environment in buildings. For example, transparent acrylic partitions are often used in eating establishments, meeting rooms, offices, etc., to prevent droplet infection. However, acrylic partitions are acoustically reflective; therefore, reflected sounds may cause acoustic problems such as difficulties in conversation or the leakage of conversation. In this study, we performed a prototyping of transparent acrylic partitions to which a microperforated panel (MPP) was applied for sound absorption while maintaining transparency. The proposed partition is a triple-leaf acrylic partition with a single acrylic sheet without holes between two MPP sheets, as including a hole-free panel is important to a possible droplet penetration. The sound absorption characteristics were investigated by measuring the sound absorption in a reverberation room. As the original prototype showed sound absorption characteristics with a gentle peak and low values due to the openings on the periphery, it was modified by closing the openings of the top and sides. The sound absorption performance was improved to some extent when the top and sides were closed, although there remains the possibility of further improvement. This time, only the sound absorption characteristics were examined in the prototype experiments. The effects during actual use will be the subject of future study.

scholarly journals The Effect of Mahish Mutra Ghanvati in Udar-jatodakawastha- A Case Study

2021 ◽  
Vol 9 (02) ◽  
Author(s):  
SATISH AGHAV
Keyword(s):  
Adverse Effect ◽  
Metabolic Disorders ◽  
Abdominal Cavity ◽  
Fluid Collection ◽  
Abdominal Girth ◽  
Weak State

Ayurveda emphasizes that all the diseases are the result of weak state of Agni. Improper functioning of Agni leads to various metabolic disorders. Ascites describes the condition of pathologic fluid collection within the abdominal cavity .According to Ayurveda Udar-Jatodakawastha can be corelated with ascites as the sign and symptoms are same. Mandagni,Ajirna and malavrudhi are the reasons behind udar-jatodakawastha. In this article a case study of Udar-Jatodakawastha in which Mahishmutra Ghanvati has been given over a period of 14 days resulted in the reduction of the abdominal girth, decreases in weight without any treatment emergent adverse effect and reduction of all symptoms. Mahishmutra Ghanvati causes deepan, pachan, srotorodhanashnam and virechan(Malavishodhana).

Recharge origin, overexploitation, and sustainability of water resources in an arid area from Azraq basin, Jordan: case study

2006 ◽  
Vol 37 (3) ◽  
pp. 277-292 ◽  
Author(s):  
William Bajjali ◽  
Khair Al-Hadidi
Keyword(s):  
Adverse Effect ◽  
Isotopic Composition ◽  
Groundwater Resources ◽  
Arid Area ◽  
Safe Yield ◽  
The Public ◽  
Drying Up ◽  
Groundwater Basin ◽  
Azraq Basin

The Azraq groundwater basin, found in Jordan, is an important resource for available water to the public. Its magnitude and value has been decreasing for the last two decades. The groundwater level has been declining on a yearly basis since the 1980s, and over-pumping, which has tripled since 1983, has led to the drying up of major springs in the 1990s. Overexploitation is considered as the adverse effect on groundwater mass balance, where the abstraction increases yearly and beyond the safe yield. Over-pumping and irrigation activities cause groundwater to become more saline. The isotopic composition of groundwater is divided into two groups. The first group is associated with EMWL, and the second with GMWL. The recharge origin of the first group, which includes the upper and middle aquifers, originate from outside the Azraq basin with a land elevation higher than 1150 m asl. The groundwater of the second group is considered palaeowater. No major recharge component is identified in the basin. Accurate and reliable scientific approaches are indispensable to better understand, plan and manage the groundwater resources.

Phantom pain as an adverse effect after maggot (Lucilia sericata) debridement therapy: a case study

2020 ◽  
Vol 29 (5) ◽  
pp. 303-305
Author(s):  
Przemysław Lipiński ◽  
Radzisław Trzciński ◽  
Łukasz Dziki ◽  
Michał Mik
Keyword(s):  
Adverse Effect ◽  
Adverse Event ◽  
Nerve Regeneration ◽  
Lucilia Sericata ◽  
Phantom Pain ◽  
Traumatic Amputation ◽  
Post Traumatic ◽  
Maggot Therapy ◽  
Larval Therapy

Maggot debridement therapy, also known as larval therapy, is a well known method of treatment for hard-to-heal and intractable wounds. This case study describes severe phantom pain as a rare adverse event of maggot therapy in patients after post-traumatic amputation of the leg. We also hypothesise and discuss the possibility that the phantom pain may be a result of maggot activity, not only through tissue debridement but also through nerve nourishment and nerve regeneration.

Steam-Induced Wettability Alteration through Contact Angle Measurement, a Case Study in X Field, Indonesia

2014 ◽  
Author(s):  
Madi Abdullah Naser ◽  
Asep K Permadi ◽  
Wisup Bae ◽  
Won Son Ryoo ◽  
Yunsun Park ◽  
...  
Keyword(s):  
Contact Angle ◽  
Contact Angle Measurement ◽  
Angle Measurement ◽  
Wettability Alteration

To Collect or Not to Collect, That is the Question. . . But Where’s the Point?

Collections ◽  
2020 ◽  
pp. 155019062095153
Author(s):  
Ronald S. Krug ◽  
Peter J. Pilles
Keyword(s):  
Adverse Effect ◽  
Historic Preservation ◽  
Contextual Information ◽  
Future Research ◽  
National Forest ◽  
Archaeological Survey ◽  
Archaeological Record ◽  
Northern Arizona ◽  
National Historic Preservation Act

Many land managing agencies have policies that forbid the collection of artifacts during archaeological survey and, even under controlled situations, collection is determined to be an “Adverse Effect” under Section 106 compliance interpretations of the National Historic Preservation Act. The main rationale is that removal destroys the contextual information of the artifact in relation to the rest of the site. This paper argues that such “non-collecting policies” are short-sighted and do not “protect” artifacts from unauthorized removal. In these days of technology, when sub-meter GPS instruments and other tools are available to pinpoint the location of artifacts, we submit that not collecting artifacts with important information potential is deleterious to interpreting the archaeological record. This point will be made by a case study from the Coconino National Forest in northern Arizona that illustrates the excuse “if I don’t pick it up, someone else will,” is a correct assumption. Surface collections, properly documented, provide useful information that justifies their collection and curation for present-day and future research.

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