scholarly journals Design and fabrication of Windchill for low cost vegetable preservation

2019 ◽  
Vol 30 (2) ◽  
pp. 209-218
Author(s):  
SS Tunny ◽  
MAE Rabbani ◽  
MS Basir

In Bangladesh, every year a huge amount of vegetables are being lost after harvesting from the field due to inadequate storage facilities at farmers’ level. Considering this a low cost storage chamber, windchill was designed and fabricated that consumes low power to operate by a 12V duct fan. The average temperature inside the chamber at no load condition was found 24.7◦C with a relative humidity of 77.2% while the outside temperature and relative humidity were 28.9◦C and 54%, respectively. Performance of the chamber was tested keeping vegetables inside the chamber for four and five days during pre-test and bulk load test, respectively. During bulk load test the temperature and relative humidity inside the chamber were 24.7◦C and 77.1%, respectively while outside the chamber, these were 28.8◦C and 52.8%, respectively. After four days weight loss percentage inside the chamber at pre-test condition were 1.76% (tomato), 3.53% (brinjal), 5.2% (greenchili) and 18.16% (red amaranth) while weight loss outside the chamber were 4.18% (tomato), 9.52% (brinjal), 14.44% (greenchili) and 49.44% (red amaranth). Weight loss percentage at bulk load condition inside the chamber was 1.46% while outside the chamber was 15.15% at 5th day. Physical appearance of vegetables kept inside the chamber was also much better than those kept outside the chamber. The panel test result for evaluating physical appearance was found satisfactory based on their acceptance level after preservation. The initial construction cost of the full unit was Tk. 6010 which was found cost effective for farmers to store their vegetables for several days after harvesting. Progressive Agriculture 30 (2): 209-218, 2019

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Wenping Feng ◽  
Junfen Zhang ◽  
Wenyuan Shang ◽  
Pingxue Qiu ◽  
Aiqi Yu

Objective Objective: This study was to investigate the body under high temperature (33 ℃) with different relative humidity (80%, 50%, 20%) combination of environment, respectively for 20 min 60% VO2max individual strength of quiet before and after the exposure of movement and under the same conditions, by measuring the participants within the body weight, serum sex hormone of blood, blood Na+、K+, Na+、K+ concentration in the urine of change, to explore in the sports stress and thermal stress of two kinds of stimulating the body water and salt metabolism characteristics, and to explore the effects of environmental humidity on the body's homeostasis. Methods Methods: This study selected 12 students of sports training major from Beijing sports university as subjects, with themselves as the control. The experiment is divided into six categories, respectively: high temperature 33℃ and 20% RH exposure group, the high temperature 33℃ and 20% RH campaign group, high temperature 33℃and 50% RH exposure group, the high temperature 33℃ and 50% RH campaign group, high temperature 33℃ and 80% RH exposure group and high temperature 33℃ and 80% RH. In this study all the environmental temperature are set up to 33℃, exercise intensity level of 60% VO2max selection for individual participants. Before every experiment, all participants were asked to quiet sit for 20 min and then measure the subjects' body weight, charge the subjects' vein blood and urine, take the same operation immediately after the experiment. Blood samples were stored at room temperature for 1 h, and 3000r/min was centrifuged for 20min. Serums were gathered through centrifugation, The urine and Serums were partial shipments in tube to be indicators of measurement. Serum Renin、ANGII、ALD、ADH、ANP、Na+、K+ concentration of serum and urine were tested Results Results:  (1)The subjects' weight loss percentage of exercise group was obviously higher than that of quiet exposure group, the difference is statistically significant (P < 0.01); In 80% RH environment weight loss percentage is significantly higher than that of 50% RH and 20% RH values (P < 0.01).There is no difference between 20%RH and 50%RH. (2) The exercise group of Renin, ANGII, ALD, ADH, concentration is significantly higher than the value of exposed group (P < 0.01), but the ANP concentrations were significantly lower than pure quiet exposure levels (P < 0.01). Conclusions Conclusions: (1) The body sweat more after exercise than just quiet exposed in high temperature, weight loss phenomenon more obvious; And with the increase of relative humidity environment,  dehydration will more serious. (2) Exercise factors can significantly promote the release of blood Renin, ANGII, ALD, ADH and   inhibit the release of ANP in the blood. By the way of strengthening the absorption process of water and ions, it can maintain the body's balance of water and ions.


2009 ◽  
Vol 27 (15_suppl) ◽  
pp. e20551-e20551
Author(s):  
Z. Nooruddin ◽  
D. Hui ◽  
S. Dalal ◽  
E. Bruera ◽  
E. Del Fabbro

e20551 Background: The cancer-related anorexia/cachexia syndrome is primarily caused by an aberrant inflammatory response and neurohormonal dysfunction. Secondary causes that contribute to diminished nutrient intake include early satiety, constipation, nausea, vomiting, mood alterations, dysgeusia, and dysphagia. We determined the frequency and management of both secondary cachexia causes and metabolic/endocrine alterations in a new CC at a Comprehensive Cancer Center. Methods: We conducted a retrospective chart review of 159 consecutive patients who underwent structured assessments at the CC. Demographics, weight loss, secondary causes and specific treatments were analyzed. Results: The patients had the following characteristics: median age 59, females 39%, median body mass index 20.3, median weight loss over the preceding 3 months 7%, and hypoalbuminemia 76%. At consultation, 102 (64%) were on chemotherapy/radiation and 13 (8%) were on enteral or parenteral nutrition. Appetite stimulants prior to consult included megestrol (n=36, 22%), corticosteroids (n=21, 13%) and dronabinol (n=10, 6%). The median number of secondary causes was 3 (Q1-Q3 2–4), with a median of 2 (Q1-Q3 1–3) interventions per patient. 22 (14%), 105 (66%) and 32 (20%) patients had 0–1, 2–4 and 5–8 secondary cachexia causes, respectively. The table lists the significant findings and corresponding interventions. 52 (33%) were enrolled onto clinical trials for primary cachexia. Conclusions: A total of 411 treatable secondary cachexia causes and 89 endocrine/metabolic alterations were identified in our cohort. Low cost effective interventions were available for most of the common findings. [Table: see text] No significant financial relationships to disclose.


Sensors ◽  
2020 ◽  
Vol 20 (18) ◽  
pp. 5175
Author(s):  
Abdul Samad ◽  
Daniel Ricardo Obando Nuñez ◽  
Grecia Carolina Solis Castillo ◽  
Bernd Laquai ◽  
Ulrich Vogt

Using low-cost gas sensors for air quality monitoring promises cost effective and convenient measurement systems. Nevertheless, the results obtained have a questionable quality due to different factors that can affect sensor performance. The most discussed ones are relative humidity and air temperature. This investigation aimed to assess the behavior of B4-series low-cost gas sensors from Alphasense for measuring CO, NO, NO2, and O3 for different levels of relative humidity and temperature. These low-cost gas sensors were tested for six relative humidity levels from 10% to 85% with increasing steps of 15% and four temperature levels of 10 °C, 25 °C, 35 °C, and 45 °C against reference instruments in the laboratory. The effect of these parameters on low-cost gas sensors was quantified in laboratory from which a correction algorithm was calculated, which was then applied to the field data. The applied algorithm improved the data quality of the low-cost gas sensors in most of the cases. Additionally, a low-cost dryer was assessed to reduce the influence of these factors on the low-cost gas sensors, which also proved to be suitable to enhance the data quality.


Author(s):  
Ivan Vajs ◽  
◽  
Dejan Dragić ◽  
Ilija Radovanović ◽  
◽  
...  

Due to the rising air pollution in densely populated areas, the need for reliable and cost-effective air monitoring systems is on the rise. Low-cost off-the-shelf air quality sensors available on the market provide a good starting point as they are readily available and inexpensive but fall short when it comes to accuracy and reliability. In this paper, the influence of relative humidity and temperature on the accuracy of these sensors is analyzed. Different types of statistical models are used in order to model the measuring error of the sensors caused by relative humidity and temperature. Obtained results show that the accuracy of the off-the-shelf system can be improved by adequate compensation and a more reliable, yet inexpensive air monitoring systems could be implemented.


2021 ◽  
Author(s):  
Sham Nambulli ◽  
Yufei Xiang ◽  
Natasha L. Tilston-Lunel ◽  
Linda J. Rennick ◽  
Zhe Sang ◽  
...  

AbstractGlobally there is an urgency to develop effective, low-cost therapeutic interventions for coronavirus disease 2019 (COVID-19). We previously generated the stable and ultrapotent homotrimeric Pittsburgh inhalable Nanobody 21 (PiN-21). Using Syrian hamsters that model moderate to severe COVID-19 disease, we demonstrate the high efficacy of PiN-21 to prevent and treat SARS-CoV-2 infection. Intranasal delivery of PiN-21 at 0.6 mg/kg protects infected animals from weight loss and substantially reduces viral burdens in both lower and upper airways compared to control. Aerosol delivery of PiN-21 facilitates deposition throughout the respiratory tract and dose minimization to 0.2 mg/kg. Inhalation treatment quickly reverses animals’ weight loss post-infection and decreases lung viral titers by 6 logs leading to drastically mitigated lung pathology and prevents viral pneumonia. Combined with the marked stability and low production cost, this novel therapy may provide a convenient and cost-effective option to mitigate the ongoing pandemic.


2019 ◽  
Vol 97 (Supplement_2) ◽  
pp. 189-190
Author(s):  
Jay S Johnson ◽  
Sai Zhang ◽  
Gabriela M Morello ◽  
Jacob M Maskal ◽  
Nathalie L Trottier

Abstract Determining total heat production (THP) in individual sows and litters can be difficult and often requires the use of multiple animals to generate data on a per room basis. These systems may be costly to construct precluding their use by many researchers. The study objective was to develop a low cost indirect calorimetry system to determine THP in individual lactating sows and litters. Six indirect calorimeters were constructed to house 1 sow and litter in a crate throughout farrowing and a 21-d lactation period. Chamber accuracies for O2 and CO2 were evaluated by ethanol combustion. One-week pre-farrowing, 6 pregnant multiparous sows (parity 2.9 ± 0.9; 218.3 ± 38.6 kg BW) were housed individually in each farrowing crate and maintained in thermoneutral conditions (20.9 ± 2.6°C and 43.7 ± 18.6% relative humidity) throughout lactation. On lactation d 4, 8, 14, and 18, indirect calorimetry was performed on all sows and their litters, as well as 2 piglets from a sentinel litter to determine THP. Sentinel piglet data were used to estimate THP for the sows independent of the litter. Sow + litter THP (kcal/h) increased (P = 0.01; 16.6%) on d 8 compared to d 4 and was greater (27.3%) on d 14 and d 18 compared to d 4 and d 8. Sow THP was greater (P = 0.01) on d 8 (401.19 ± 17.15 kcal/h) and d 14 (430.79 ± 12.42 kcal/h) compared to d 4 (346.16 ± 16.62 kcal/h), and was greater on d 14 compared to d 8 and on d 18 (386.16 ± 20.02 kcal/h) compared to d 14. In summary, this cost-effective system can allow researchers to accurately evaluate THP in individual lactating sows and their litters


2021 ◽  
Vol 7 (22) ◽  
pp. eabh0319
Author(s):  
Sham Nambulli ◽  
Yufei Xiang ◽  
Natasha L. Tilston-Lunel ◽  
Linda J. Rennick ◽  
Zhe Sang ◽  
...  

Globally, there is an urgency to develop effective, low-cost therapeutic interventions for coronavirus disease 2019 (COVID-19). We previously generated the stable and ultrapotent homotrimeric Pittsburgh inhalable Nanobody 21 (PiN-21). Using Syrian hamsters that model moderate to severe COVID-19 disease, we demonstrate the high efficacy of PiN-21 to prevent and treat SARS-CoV-2 infection. Intranasal delivery of PiN-21 at 0.6 mg/kg protects infected animals from weight loss and substantially reduces viral burdens in both lower and upper airways compared to control. Aerosol delivery of PiN-21 facilitates deposition throughout the respiratory tract and dose minimization to 0.2 mg/kg. Inhalation treatment quickly reverses animals’ weight loss after infection, decreases lung viral titers by 6 logs leading to drastically mitigated lung pathology, and prevents viral pneumonia. Combined with the marked stability and low production cost, this innovative therapy may provide a convenient and cost-effective option to mitigate the ongoing pandemic.


Author(s):  
Tanwi Singh ◽  
Anshuman Sinha

The major risk associated with low platelet count in pregnancy is the increased risk of bleeding during the childbirth or post that. There is an increased blood supply to the uterus during pregnancy and the surgical procedure requires cutting of major blood vessels. Women with thrombocytopenia are at increased risk of losing excessive blood. The risk is more in case of caesarean delivery as compared to vaginal delivery. Hence based on above findings the present study was planned for Assessment of the Platelet Count in the Pregnant Women in IGIMS, Patna, Bihar. The present study was planned in Department of Pathology, Indira Gandhi Institute of Medical Science, Patna, Bihar, India. The present study was planned from duration of January 2019 to June 2019. In the present study 200 pregnant females samples received for the platelet estimation were enrolled in the present study. Clinically platelet indices can be a useful screening test for early identification of preeclampsia and eclampsia. Also platelet indices can assess the prognosis of this disease in pregnant women and can be used as an effective prognostic marker because it correlates with severity of the disease. Platelet count is a simple, low cost, and rapid routine screening test. Hence the data generated from the present study concludes that platelet count can be used as a simple and cost effective tool to monitor the progression of preeclampsia, thereby preventing complications to develop during the gestational period. Keywords: Platelet Count, Pregnant Women, IGIMS, Patna, Bihar, etc.


2019 ◽  
Vol 2019 (4) ◽  
pp. 7-22
Author(s):  
Georges Bridel ◽  
Zdobyslaw Goraj ◽  
Lukasz Kiszkowiak ◽  
Jean-Georges Brévot ◽  
Jean-Pierre Devaux ◽  
...  

Abstract Advanced jet training still relies on old concepts and solutions that are no longer efficient when considering the current and forthcoming changes in air combat. The cost of those old solutions to develop and maintain combat pilot skills are important, adding even more constraints to the training limitations. The requirement of having a trainer aircraft able to perform also light combat aircraft operational mission is adding unnecessary complexity and cost without any real operational advantages to air combat mission training. Thanks to emerging technologies, the JANUS project will study the feasibility of a brand-new concept of agile manoeuvrable training aircraft and an integrated training system, able to provide a live, virtual and constructive environment. The JANUS concept is based on a lightweight, low-cost, high energy aircraft associated to a ground based Integrated Training System providing simulated and emulated signals, simulated and real opponents, combined with real-time feedback on pilot’s physiological characteristics: traditionally embedded sensors are replaced with emulated signals, simulated opponents are proposed to the pilot, enabling out of sight engagement. JANUS is also providing new cost effective and more realistic solutions for “Red air aircraft” missions, organised in so-called “Aggressor Squadrons”.


2011 ◽  
Vol 14 (2) ◽  
Author(s):  
Thomas G Koch

Current estimates of obesity costs ignore the impact of future weight loss and gain, and may either over or underestimate economic consequences of weight loss. In light of this, I construct static and dynamic measures of medical costs associated with body mass index (BMI), to be balanced against the cost of one-time interventions. This study finds that ignoring the implications of weight loss and gain over time overstates the medical-cost savings of such interventions by an order of magnitude. When the relationship between spending and age is allowed to vary, weight-loss attempts appear to be cost-effective starting and ending with middle age. Some interventions recently proven to decrease weight may also be cost-effective.


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