scholarly journals Sediment Impact On Turbine Material: Case Study Of Modi River, Nepal

Author(s):  
L Poudel ◽  
B Thapa ◽  
BP Shrestha ◽  
NK Shrestha

Hydropower is considered as one of the most economical and stable base energy source compared with other sources of energy of Nepal. Researches coherent to this field are not new but yet it is not sufficient, lots of tiles have to be kept for better understanding of hydropower effecting elements. Sand is the most affecting element that damages the turbine blades, so research on relation of sand and turbine is most. This research is done to find out the impact of sediment on turbine material. Modi River sediment at eight different stations has been taken as sample and its erosion rate in turbine blade sample specimen has been accounted in this study. Rotating disc apparatus has been utilized to find out the total impact of sand on turbine material. Four same kind of test turbine material is used on single rotating disc all at a time at same condition to define sand impact. Thirty gram (gm) of sediment mixed with three liters of water is used to strike sample pieces for five minutes. Two different tests of sediment samples of 8 different locations were studied. After all the test it is observed that the first test sand sample of location 1 and turbine material 1 has the highest impact with a weight loss of 7.764 mg and least impact in sand sample location 1 and sand sample 3 with a weight loss of 3.5 mg. Average weight loss of turbine material in first location is 5.929 mg which is the greatest impact and 4.0083 at eight locations which is the least. Relating to turbine material first rotating disc turbine specimen P0A has been affected highly with weight loss of 9.289 mg and less eroded on P5A rotating turbine specimen with weight loss of 1.2 mg. DOI: http://dx.doi.org/10.3126/kuset.v8i1.6047 KUSET 2012; 8(1): 88-96

Author(s):  
Vissapragada A ◽  

Millets are nutritious, easily digestible, gluten-free whole grains. They are good sources of proteins, fibers and iron content. They are also good sources of polyphenols, flavonoids and other phytochemicals that have anti-inflammatory effects. This case study aims to show that eating millets twice a day for breakfast and dinner helps to lose weight. Kodo millet, little millet, foxtail millet and barnyard millet were included in the diet. Consuming these millets for four weeks, the average weight loss per week was noted as 1.2kg. Body Mass Index (BMI) was reduced from 28.8 to 26.6.


2020 ◽  
Vol 12 (4) ◽  
pp. 1595 ◽  
Author(s):  
Aisha Al-Rumaihi ◽  
Gordon McKay ◽  
Hamish R. Mackey ◽  
Tareq Al-Ansari

Food waste is a significant contributor to greenhouse gas emissions (GHG) and therefore global warming. As such, the management of food waste can play a fundamental role in the reduction of preventable emissions associated with food waste. In this study, life cycle assessment (LCA) has been used to evaluate and compare the environmental impact associated with two composting techniques for treating food waste using SimaPro software; windrow composting and the hybrid anaerobic digestion (AD) method. The study, based on a 1 tonne of food waste as a functional unit for a case study in the State of Qatar, concludes that anaerobic digestion combined composting presents a smaller environmental burden than windrow composting. The majority of the emissions generated are due to the use of fossil fuels during transportation, which correspond to approximately 60% of the total impact, followed by the impact of composting with 40% of the impact especially in terms of global warming potential. Environmental assessment impacts were the highest in windrow composting for the acidification impact category (9.39 × 10 − 1 kg SO2 eq). While for AD combined composting the impact was highest for the human toxicity impact category (3.47 × 10 kg 1,4 − DB eq).


2017 ◽  
Vol 203 (4) ◽  
pp. 258-266 ◽  
Author(s):  
Aarón Leonardo Pogacnik Murillo ◽  
Felix Eckstein ◽  
Wolfgang Wirth ◽  
Daniel Beavers ◽  
Richard F. Loeser ◽  
...  

Objectives: The infrapatellar fat pad (IPFP) represents intra-articular adipose tissue that may contribute to intra-articular inflammation and pain by secretion of proinflammatory cytokines. Here we examined the impact of weight loss by diet and/or exercise interventions on the IPFP volume. Methods: Intensive Diet and Exercise for Arthritis (IDEA) was a single-blinded, single-center, 18-month, prospective, randomized controlled trial that enrolled 454 overweight and obese older adults with knee pain and radiographic osteoarthritis. Participants were randomized to 1 of 3 groups: exercise-only control (E), diet-induced weight loss (D), and diet-induced weight loss + exercise (D+E). In a subsample (n = 106; E: n = 36, D: n = 35, and D+E: n = 35), magnetic resonance images were acquired at baseline and at the 18-month follow-up, from which we analyzed IPFP volume, surface areas, and thickness in this secondary analysis. Results: The average weight loss amounted to 1.0% in the E group, 10.5% in the D group, and 13.0% in the D+E group. A significant (p < 0.01) reduction in IPFP volume was observed in the E (2.1%), D (4.0%), and D+E (5.2%) groups. The IPFP volume loss in the D+E group was significantly greater than that in the E group (p < 0.05) when not adjusting for parallel comparisons. Across intervention groups, there were significant correlations between IPFP volume change, individual weight loss (r = 0.40), and change in total body fat mass (dual-energy X-ray absorptiometry; r = 0.44, n = 88) and in subcutaneous thigh fat area (computed tomography; r = 0.32, n = 82). Conclusions: As a potential link between obesity and knee osteoarthritis, the IPFP was sensitive to intervention by diet and/or exercise, and its reduction was correlated with changes in weight and body fat.


Economies ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 112
Author(s):  
Cristina Pereira ◽  
Joaquim Mourato ◽  
João Alves ◽  
Miguel Serafim

This article highlights the relevance of the location of HEIs in low-density territories in Portugal, using the Polytechnic Institute of Portalegre as a case study. Based on the American Council Education model and following a surveying approach to faculty, staff, and students, this research accounts for the total spending of incoming academics, other nonlocal university members and their visitors, that positively impacts regional development. A demand-side approach was followed so that indirect and induced effects could also be estimated. The main aim of this research paper is to quantify the total impact arising from the location of the Polytechnic in a given region, measured by economic and social indicators such as the financial return from public funds invested in the region, the number of jobs created, and the impact on the local gross domestic product. The results show an impact of more than EUR 17 million in the territory where the Polytechnic operates, representing 3.68% of the local GDP. The institution was also found to be the third major employer in the region, responsible for the creation of 471 jobs that account for 2.25% of the local economically active population.


2020 ◽  
Vol 13 (Suppl_1) ◽  
Author(s):  
Alexandre Shehata ◽  
Ishan Patel ◽  
Isha Samreen ◽  
Swaiman Singh ◽  
Sergio Waxman ◽  
...  

Introduction: The morbidity and mortality associated with obesity (BMI >30 kg/m2) has been known to medical science for more than 2000 years. 1 Obesity is increasing in prevalence in adults, adolescents, and children and is considered a global epidemic. The age-adjusted overall prevalence of obesity in the United States increased progressively from 22.9 to 30.5 to 39.6 percent from the year 2007 to 2016. 2 Purpose: To Assess if filling out a survey on obesity has any impact on a patient’s behavior and self-awareness in an outpatient setting. Methods: In an urban outpatient setting, 350 individuals aged 18 and above, suffering from obesity (defined as BMI >30/m2) were asked to fill-out a survey. The survey included basic demographic information, weight, employment status, exercise frequency, eating habits, and questions about self-perception. Patients filled out an identical follow-up survey 2-3 months later. We measured the changes in responses between the pre- and the post- survey. Results: Of the 350 original respondents, 103 patients followed up with the post-survey. 68.9% were women, 73.2% were African-American, and 62.3% were unemployed. 46.4% of patients felt neutral, or content about their current weight. 37.7% of patients reported never exercising in the pre-survey vs. 16.8% in the post-survey (20.9% improvement), while 25.3% of patients reported exercising 2-3 times per week in the pre-survey vs. 36.4% in the post-survey (11.1% improvement). 61% of patients had lost weight (average weight loss of 6.75lbs), 19% of patients had gained weight (average weight gain 4.55 lbs.) and 20% had maintained the same weight. We recorded a net weight loss of 2.2 lbs. Conclusion: In our pilot study, we found that the act of filling out a survey on obesity may have a positive impact on the behavior and self-awareness of patients with BMI > 30kg/m2. Larger sample sizes would be beneficial in order to further establish the impact of such intervention. 1. Bray GA. The Battle of the Bulge: A History of Obesity Research, Dorrance, Pittsburgh 2007. 2. Hales CM, Fryar CD, Carroll MD, Freedman DS, Ogden CL. Trends in Obesity and Severe Obesity Prevalence in US Youth and Adults by Sex and Age, 2007-2008 to 2015-2016. JAMA. 2018;319(16):1723.


2021 ◽  
Vol 3 (1) ◽  
pp. 20-25
Author(s):  
I.M. Ikeh ◽  
◽  
O.O. Odikamnoro ◽  
V.O. Okonkwo ◽  
◽  
...  

Malaria has considerable potential for adversely influencing host nutrition. It can restrict food intake through anorexia while causing vomiting or diarrhea, it may interfere with the absorption of ingested food. This survey was however conducted to ascertain the impact of the Plasmodium falciparum malaria attack on the weight potentials of the sufferers treated with Diaminopyrimidines (Pyrimethamine) and Sulphonamides (Sulfadoxine) Out of 243 patients studied in Abakaliki, the age groups 10-19 (48.6%), 20-29 (30.0%), 30-39 (12.8%), 40-49 (5.8%), and 50-59 (2.9%) showed average weight loss/gain of ± 1.4, ±0.3, ± 0.6, and± 0.2 respectively for both males, and females. The corresponding weight loss/gain between D0-D7 showed 10 ≤ 20: D0-D2 (-0.1), D2-D7 (+0.7), 21≤ 30: D0-D2 (- 0.3), D2-D7 (+ 0.2); 31 ≤ 40: D0-D2 (0.0), D2-D7 (+0.2);41 ≤ 50: D0-D2 (- 0.1), D2-D7 (- 0.1),51≤ 60: D0-D2 (0.0), D2-D7 (+ 0.2).The result of increased catabolism of proteins and associated weight loss in severe malaria attack should be regained by nutritional sufficiency.


2020 ◽  
Author(s):  
Ranjan Sinha ◽  
Dashyanng Kachru ◽  
Roshni Ray Ricchetti ◽  
Simitha Singh-Rambiritch ◽  
Karthik Marimuthu Muthukumar ◽  
...  

BACKGROUND In this age of global COVID-19 pandemic, the urgency of addressing an epidemic of obesity and associated inflammatory illnesses has come to the fore. Studies have demonstrated that interactions between single nucleotide polymorphisms (SNPs) and lifestyle interventions like food and exercise may vary metabolic outcomes, contributing to obesity and therapeutic response. However, there is a paucity of research relating outcomes from digital therapeutics to inclusion of genetic data in care interventions. OBJECTIVE This study aims to describe and model weight loss of subjects enrolled in a precision digital weight loss program informed by machine learning analysis of subject data, including genomic. It was hypothesized that weight loss models would exhibit better fit when incorporating genomic data than utilizing demographic and engagement variables alone. METHODS A cohort of 393 participants enrolled in Digbi Health’s personalized digital care program for 120 days was analyzed retrospectively. Care protocol included the use of subject genomic and gut microbiome data informing precision coaching by mobile app and personal coach. Two linear regression models of weight loss in this cohort (pounds lost, percentage lost) as a function of demographic and behavioral engagement variables were fit. Genomic-enhanced models were built by adding 197 SNPs from subject genomic data as predictors, then refitting, employing Lasso regression on SNPs for variable selection. Success/failure logistic regression models were also fit, with and without genomic data. RESULTS 72% of subjects in this cohort lost weight, while 17% maintained stable weight. 142 subjects lost 5% within 120 days. Models describe the impact of demographic and clinical factors, behavioral engagement, and genomic risk on weight loss. The addition of genomic predictors improved the mean squared error of weight loss models (pounds lost and percent) from 70 to 60 and 16 to 13 respectively. The logistic model improved pseudo R2 from 0.193 to 0.285. Gender, engagement and specific SNPs were significantly associated with weight loss. SNPs within genes involved in metabolic pathways that process food and regulate storage of fat were associated with weight loss in this cohort. This included rs17300539_G (insulin resistance, monounsaturated fat metabolism), rs2016520_C (BMI, waist circumference, cholesterol metabolism), and rs4074995_A (calcium-potassium transport, serum calcium levels). Models described greater average weight loss for subjects having more of these risk alleles. Notably, coaching for dietary modification was personalized to these genetic risks. CONCLUSIONS Adding genomic information in modeling outcomes of a digital precision weight loss program greatly enhanced model accuracy. Interpretable weight loss models pointed to efficacy of coaching informed by subjects’ genomic risk, accompanied by active engagement of subjects in their own success. While large-scale validation is needed, our study preliminarily supports precision dietary interventions for weight loss utilizing genetic risk, with digitally delivered recommendations alongside health-coaching to improve intervention efficacy.


2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Carina Kern ◽  
Kristine Polley ◽  
Meghan Hamrock ◽  
Weston Bussler ◽  
Karma James ◽  
...  

Abstract Objectives Chronic high-intensity exercise in extreme conditions requires high nutrient demand and places high strain on an athlete's body. Without balanced nutrition, these challenges will result in caloric deficit, loss of muscle mass and have associated negative physiological effects. Optimal nutrition can help manage and mitigate limits of extreme human performance and support recovery. Methods Purpose: To assess the impact of a high caloric, nutrient dense sport bar (52% fat, 13% protein, 35% carbohydrate) (Standard Process Inc, Palmyra, WI) on select health indicators of a male elite adventure athlete before and after a 932 mi trek across Antarctica. The subject performed the excursion solo and unsupported, with no replenishment of food/drink, using his own physical strength to trek 932 mi. Estimated daily caloric needs were ∼10,000 kcal/d. 4908 kcals of this demand was consumed in the form of a sport bar (4 bars, 1187 kcal/bar) including nutrient- and phytonutrient-dense ingredients, as well as a protein powder supplement (1 serving, 160 kcal). Post-event dietary review indicated ∼8000 kcal/d were consumed over the 54-d prolonged hours (10 + h/d) of constant activity. Results Pre- to post- trek body weight decreased by 6.8 kg. Total fat mass and body fat % decreased, 0.81 kg and 1%, respectively, and total lean muscle mass decreased by 0.21 kg (DXA, Discovery A; Hologic Inc.). Post-trek blood analysis revealed normal hsCRP (<1.0 mg/L), and increases in vitamins such as B12 (by 293pg/ml) and vitamin D (by 80 ng/dl). Increases in lactate dehydrogenase (by 197 U/L), and two liver enzymes, alanine aminotransferase (ALT, by 213 U/L) and aspartate aminotransferase (AST, 28 U/L) were also observed. Cortisol levels were moderately elevated (increase by 3.2 ug/dL) while testosterone (364.3 ng/dL) and estradiol (20 pg/nL) levels were in low normal range. Conclusions This case study suggests optimizing nutrition with a nutrient-dense proprietary bar formula can effectively minimize weight loss and support muscle mass, compared to average weight losses of 18 kg reported in studies of similar activity using less than optimized diet plans. Further large-scale studies are needed to confirm health benefits of Standard Process sports bars on the nutritional status and performance of athletes participating in frequent organized training and performance challenges. Funding Sources This research was funded by Standard Process, Inc.


2016 ◽  
Vol 8 (4) ◽  
pp. 456-462
Author(s):  
Moawia M. Al-Tabakha ◽  
Dana Emad Eddin Obaid ◽  
Khairi M. S. Fahelelbom ◽  
Bassem Sadek

2016 ◽  
Vol 22 ◽  
pp. 145-146
Author(s):  
Tiffany Schwasinger-Schmidt ◽  
Georges Elhomsy ◽  
Fanglong Dong ◽  
Bobbie Paull-Forney

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