Impact of biodegradable trenching slurry on iron treatment wall performance

1998 ◽  
Vol 38 (7) ◽  
pp. 49-53
Author(s):  
D. Navon ◽  
R. C. Loehr ◽  
H. M. Liljestrand ◽  
D. E. Daniel
Keyword(s):  
Cost Effective ◽  
Treatment Barriers ◽  
First Order ◽  
Commercial Grade ◽  
Cost Effective Method ◽  
Iron Treatment ◽  
Degradation Rates ◽  
Significant Difference ◽  
Polymer Slurry ◽  
The Impact

Biodegradable trenching slurries have been proposed as a cost effective method for the emplacement of reactive treatment barriers. In this study, the impact of a bio-polymer slurry on the ability of zero-valent iron to reductively dehalogenate trichloroethene was measured. First-order trichloroethene degradation rates were determined for three types of iron, with and without slurry in batch reactions. For the commercial grade iron, a significant difference was determined between the surface area normalized rate without slurry (1.78E-4 L m−2 hr−1) and with slurry (1.23E-4 L m−2 hr−1). However, no significant difference was determined with or without bio-slurry for the reagent grade irons.

Comparison of Gravity Collection Versus Suction Collection for Transfusion Purposes in Dogs

2013 ◽  
Vol 49 (5) ◽  
pp. 301-307 ◽  
Author(s):  
Bérénice Conversy ◽  
Marie-Claude Blais ◽  
Lisa Carioto ◽  
Julie Beaudoin
Keyword(s):  
Blood Donors ◽  
Blood Product ◽  
Blood Donation ◽  
Cost Effective ◽  
Clinical Parameters ◽  
Cost Effective Method ◽  
Significant Difference ◽  
Before And After ◽  
Collection Methods ◽  
Time Point

Blood donation is an essential step in transfusion medicine that must take into account the donor’s welfare, collection effectiveness, and blood product quality. This prospective study enrolled 13 canine blood donors, each subjected to both gravity and suction collection methods, in a randomized order. Clinical parameters, including heart rate (HR), respiratory rate (RR), systolic blood pressure (SBP), and rectal temperature (RT), were evaluated at four time points, including when the donor was on the floor and on the collection table, and before and after blood donation. The number of times the donor and needle required repositioning, the duration of the donation, the noise created by the apparatus, and the presence of a hematoma were evaluated. The weight, index of hemolysis, and hematocrit of each unit of blood were recorded. There was no significant difference between collection methods for either the clinical parameters at each time point or the prevalence of hematoma formation, the frequency of needle repositioning, the hemolysis index, or hematocrit. Collection by suction was noisier (P < 0.0001), faster (P = 0.004), and associated with significantly less donor repositioning (P = 0.007). Suction appears to be a safe and cost-effective method that should be considered to optimize blood donation.

scholarly journals Improving Maternal and Child Health in Bangladesh: The Integration of Midwives in Conjunction With the United Nations Millenium Development Goals Initiative

2015 ◽  
Vol 3 ◽  
Author(s):  
Elizabeth Casto
Keyword(s):  
Child Health ◽  
United Nations ◽  
Maternal And Child Health ◽  
Millennium Development Goals ◽  
Cost Effective ◽  
Cost Effective Method ◽  
Development Goals ◽  
The United Nations ◽  
The Impact ◽  
And Child Health

As the United Nations Millennium Development Goals initiative comes to a close, it is important to examine what has been effective in combating disparities in developing nations. In this paper I explore the impact midwives have on improving maternal and child health in Bangladesh by focusing on how the United Nations Millennium Development Goals initiative has helped to change societal views on women and birth as midwives become more integrated into improving maternal and child health. It is a quantitative and qualitative approach analyzing the statistics of implementing midwives as these impact cost-effectiveness and change in mortality rates in addition to social changes that have occurred in the culture towards maternal and child health. The paper further analyzes programs implemented by countries such as India and Sri Lanka comparatively. Data have been collected from published United Nations and governmental reports, media, and research articles. The paper concludes that the implementation of midwives has provided a cost-effective method of reducing maternal and child health in Bangladesh, and will be increasingly efficient as governmental programs continue to improve various aspects and laws of the country. It is important to analyze what is working in order to further improve maternal and child health on both a regional and global level. The use of midwives can provide a fundamental framework in communities that can aid in reducing health disparities as well as all improve all facets of reproductive wellness, providing the support needed at all stages to improve maternal and child health.

scholarly journals The Effect of Strontium Ranelate Gel on Bone Formation in Calvarial Critical Size Defects

2017 ◽  
Vol 5 (7) ◽  
pp. 994-999 ◽  
Author(s):  
Hani El Nahass ◽  
Nada Nour El Din ◽  
Sherine Adel Nasry
Keyword(s):  
Bone Formation ◽  
Strontium Ranelate ◽  
Cost Effective ◽  
Negative Control ◽  
Female Rats ◽  
Control Groups ◽  
Critical Size Defects ◽  
Cost Effective Method ◽  
Significant Difference ◽  
Median Area

AIM: The current study was designed to investigate the effectiveness of locally applied Strontium ranelate to induce bone formation.MATERIALS AND METHODS: Forty-eight female rats were divided into six groups (eight rats in each group): The three test groups included Strontium (SR) 2.5 mg, 5 mg and 10 mg that was dissolved in methylcellulose gel. The control groups included methylcellulose, simvastatin 5 mg and a negative control where the defect was left to heal without any intervention. At 44 days the groups were sacrificed, and the bone defects were assessed histomorphometically to assess bone formation. The data was statistically analysed.RESULTS: There was a statistically significant difference in the amount of new bone formation between all groups, where the 2.5 mg SR group showed the highest median bone percentage, is 41.95 %, followed by the 5, and 10 mg SR demonstrating a median bone are a percentage of 39.89%, and 30.19% respectively. Simvastatin showed a median bone percentage of 36.07 %, while the methylcellulose and the negative control groups demonstrated the lowest median area percentage of 23.12 and 20.70 % respectively.CONCLUSIONS: The study showed that the local application of an SR could up-regulate the bone formation and may prove to be a cost-effective method of bone regeneration.

Is it cost-effective to add erlotinib to gemcitabine in advanced pancreatic cancer?

2006 ◽  
Vol 24 (18_suppl) ◽  
pp. 6048-6048 ◽  
Author(s):  
S. S. Grubbs ◽  
P. A. Grusenmeyer ◽  
N. J. Petrelli ◽  
R. J. Gralla
Keyword(s):  
Health Care ◽  
Pancreatic Cancer ◽  
Cost Effectiveness ◽  
Incremental Cost ◽  
Health Care Costs ◽  
Advanced Pancreatic Cancer ◽  
Cost Effective ◽  
Significant Difference ◽  
The Impact ◽  
Care Costs

6048 Background: Single agent gemcitabine has been considered the standard of care in advanced pancreatic cancer since 1996. A recent 569 patient randomized trial comparing gemcitabine alone with gemcitabine + erlotinib as first line therapy found a small but statistically significant difference in survival (6.0 vs 6.4 months, respectively, p = .028). The impact on survival may be small, but with nearly 33,000 new cases of pancreatic cancer per year, the impact on health care costs with the use of the combined regimen may be large. Using the known survival data and costs, we analyzed the incremental cost-effectiveness of adding erlotinib. Methods: Costs for a six month course of gemcitabine were developed using Medicare reimbursement from the January, 2006 CMS Drug Payment Table and Physician Fee Schedule assuming no change in infusion reimbursement. Since erlotinib is not approved as a Medicare Part B drug, costs were developed from wholesale and retail sources. Drug dosing and schedules were based on the clinical trial protocol leading to approval. Incremental cost effectiveness of adding erlotinib was calculated. Results: Six month course of gemcitabine alone costs $23,493. The addition of erlotinib increases cost by $12,156 wholesale or $16,613 retail. Given an increase of 0.4 months in median survival over gemcitabine alone, the addition of erlotinib costs $364,680 per year of life gained (YLG) wholesale and $498,379/YLG retail. Sensitivity analyses were conducted assuming shorter therapy of 4 and 5 months. In order to be cost effective even at the $100,000/YLG level, six months of erlotinib would have to be reduced to 20% of the current retail cost (lowered to $18.52 per tablet.) Conclusions: Adding erlotinib to gemcitabine does not approach cost effectiveness at even the highest year per life gained parameters. Such impacts on health care costs, especially for very small gains, become more pressing as all health care costs continue to increase. [Table: see text] [Table: see text]

scholarly journals Hand Hygiene Practices among Medical Students

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Azzam al Kadi ◽  
Sajad Ahmad Salati
Keyword(s):  
Medical Students ◽  
Hand Hygiene ◽  
Cost Effective ◽  
World Health ◽  
Undergraduate Medical Students ◽  
Clinical Phase ◽  
Healthcare Settings ◽  
Hygiene Practices ◽  
Cost Effective Method ◽  
Significant Difference

Background. Hand hygiene is a cost-effective method in preventing infection transmission. Hand hygiene practices have been found to be faulty in most healthcare settings. We conducted a study to evaluate the awareness, and compliance of hand hygiene among undergraduate medical students during their clinical phase in Qassim College of Medicine, Saudi Arabia.Methods. A questionnaire based on World Health Organization’s concept of “Five Moments for Hand Hygiene” was used to evaluate the awareness of the indications for hand hygiene and compliance was observed during Objective Structured Clinical Examination (OSCE) sessions. Sixty students including thirty-six males (60%) and twenty-four females (40%) participated voluntarily in the study.Results. The average awareness regarding the positive indications of hand hygiene was 56%. Rest of the 44% of students were either not sure or unaware of the indications of hygiene. Only 29% of students were able to identify all the five indications for hand hygiene in the questionnaire. Compliance as assessed during OSCE sessions was only 17% with no significant difference between the genders.Conclusion. It was concluded that serious efforts are needed to improve the hand hygiene practices among medical students.

scholarly journals Improvement of semen parameters after coil embolization of varicoceles: a systematic review

2021 ◽  
Vol 20 ◽  
Author(s):  
Sergio Quilici Belczak ◽  
Vanessa Stefaniak ◽  
Leonardo Garcia Góes ◽  
Felipe Coelho Neto ◽  
Walter Jr. Boim de Araújo ◽  
...  
Keyword(s):  
Systematic Review ◽  
Clinical Studies ◽  
Cost Effective ◽  
Semen Parameters ◽  
Semen Parameter ◽  
Cost Effective Method ◽  
Prisma Statement ◽  
Meta Analyses ◽  
The Impact

Abstract This systematic review was conducted in accordance with the 2009 Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement, including clinical studies in which one of the outcomes was semen parameter improvement after varicocele embolization using coils only. The objective of the review was to assess the evidence on the role of embolization using coils alone for semen parameter improvement in men with varicocele, since embolization using coils is the most cost-effective method of varicocele repair. Study quality was assessed using the methodological index for non-randomized studies (MINORS). Out of six retrospective and two prospective observational or comparative clinical studies involving 701 patients, semen concentration improved significantly in all five studies that assessed this parameter. Mean semen motility improved significantly in seven studies. The impact of embolization on semen density could not be analyzed.

SUSTAINABLE IMPACT OF BUILDING ENERGY RETROFIT MEASURES

2017 ◽  
Vol 12 (3) ◽  
pp. 69-84 ◽  
Author(s):  
Amirhosein Jafari ◽  
Vanessa Valentin
Keyword(s):  
Social Impact ◽  
Cost Effective ◽  
Building Energy ◽  
Economic Benefits ◽  
Environmental Benefits ◽  
Energy Retrofit ◽  
Cost Effective Method ◽  
Impact Index ◽  
The Impact

Energy retrofitting is argued to be the most feasible and cost-effective method for improving existing buildings' energy efficiency. As a sustainable development, building energy retrofits require the consideration and integration of all three sustainability dimensions: environmental, economic and social. The objective of this study is to estimate and compare the sustainable impact of building energy retrofits to determine the maximum sustainable benefit when implementing different energy-related measures. The proposed analysis consists of integrating three approaches for evaluating these benefits. Economic benefits are measured by estimating the payback period of energy-related measures, environmental benefits are measured by estimating the CO2 equivalent saving per year due to the implementation of energy-related measures, and social benefits are measured by defining a “social impact index” that establishes the impact of energy-related measures on buildings' users. A case study is used to demonstrate the framework for four potential scenarios. The results show that for the case study, energy-related “controlling” and “upgrading mechanical system” measures have the highest sustainable impact among the identified energy retrofitting measures.

scholarly journals Locating microseismic sources with a single seismometer channel using coda wave interferometry

Geophysics ◽  
2017 ◽  
Vol 82 (3) ◽  
pp. A19-A24 ◽  
Author(s):  
Youqian Zhao ◽  
Andrew Curtis ◽  
Brian Baptie
Keyword(s):  
Single Channel ◽  
Cost Effective ◽  
Coda Wave ◽  
Probabilistic Framework ◽  
Data Set ◽  
Cost Effective Method ◽  
Potential Applications ◽  
The Impact ◽  
Coda Wave Interferometry ◽  
Selection Of

A novel source location method based on coda wave interferometry (CWI) was applied to a microseismic data set of mining-induced events recorded in Nottinghamshire, England. CWI uses scattered waves in the coda of seismograms to estimate the differences between two seismic states. We used CWI to estimate the distances between pairs of earthquake locations, which are then used jointly to determine the relative location of a cluster of events using a probabilistic framework. We evaluated two improvements to this location technique: These account for the impact of a large difference in the dominant wavelength of a recording made on different instruments, and they standardize the selection of parameters to be used when implementing the method. Although the method has been shown to produce reasonable estimates on larger earthquakes, we tested the method for microseismic events with shorter distinguishable codas in recorded waveforms, and hence, fewer recorded scattered waves. The earthquake location results are highly consistent when using different individual seismometer channels, showing that it is possible to locate event clusters with a single-channel seismometer. We thus extend the potential applications of this cost-effective method to seismic events over a wider range of magnitudes.

scholarly journals Fatigue, Stigma, and Mood in Patients with Multiple Sclerosis: Effectiveness of Guided Imagery

2021 ◽  
Author(s):  
Mina Beitollahi ◽  
Mansooreh Azizzadeh Forouzi ◽  
Batool Tirgari ◽  
Yunes Jahani
Keyword(s):  
Multiple Sclerosis ◽  
Guided Imagery ◽  
Intervention Group ◽  
Cost Effective ◽  
Control Group ◽  
Double Blind Study ◽  
Double Blind ◽  
Cost Effective Method ◽  
Significant Difference ◽  
The Mean

Abstract Background and objectives : The present study aimed to assess the effectiveness of guided imagery on fatigue, stigma, and mood in patients with multiple sclerosis. Methods This clinical trial is a double-blind study that was conducted on 60 patients with multiple sclerosis referred to the largest center for special diseases in the southeast of Iran in 2020. The convenience sampling method was used to select the participants who were later divided into two groups of intervention (n=30) and control (n=30) using block randomization method. The intervention group listened to the guided imagery audio file at home for 25 minutes. The control group did not receive any intervention. Data were collected by demographic information questionnaires, Fatigue Severity Scale (FSS), Reece Stigma Scale for Multiple Sclerosis (RSS-MS), and the Profile of Mood States (POMS) before and one month after the intervention. Results According to the results, there was no significant difference between the two groups before the intervention in terms of the score of fatigue (P<0.0=67), stigma (P<0.64), and mood (P<0.17). However, after the intervention, a significant differences was observed in this regard (P<0.0001). In the intervention group, the mean score of fatigue decreased from 59.72±18.32 to 35.8±16.15, and the mean score of stigma decreased from 17.31±15.62 to 5.09±8.06, showing a significant reduction in the levels of fatigue (P<0.0001) and stigma (P<0.0001) compared to before intervention. Also, the mean score of mood decreased from 36.90±12.21 to 28.55±11.87, indicating an improvement in the mood of samples in the intervention group (P<0.0001). Conclusions The results indicated that guided imagery, as a cost-effective method, can decrease the fatigue and stigma, and enhance the mood of patients with MS. Therefore, nursing staff can use this method to improve MS patients’ mood and decrease their fatigue and stigma.

The Effectiveness of Dynamic Compaction Under Various Water Levels

2009 ◽  
Author(s):  
Jing-Wen Chen ◽  
Fu-Cheng Chen
Keyword(s):  
Boundary Effect ◽  
Single Point ◽  
Cost Effective ◽  
Soil Liquefaction ◽  
Water Levels ◽  
Dynamic Compaction ◽  
Cost Effective Method ◽  
Compaction Energy ◽  
Soil Densification ◽  
The Impact

Dynamic compaction is currently regarded as one of the quick but cost-effective method for soil densification to resist the potential of soil liquefaction during earthquake. Most practices and studies reveal the depth of densification is mainly limited by the compaction energy without considering the effect of water table. In this experimental study, the impact performances under both presence and absence of water level without changing the compaction energy were presented. The Single-point Impact Test is developed to perform a series of tests on soils under different water levels and drained conditions. Meanwhile, an automatic cone penetrometer is also developed to evaluate the effectiveness. The boundary effect of soil container used in the test is also discussed. The impact-induced pore pressures and dissipation periods are measured and compared with a field measurement. The relationship between the effective dynamic stresses and corresponding cone resistances in soils is highlighted. The performance of dynamic impacts is evaluated by a term of improvement ratio.

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