scholarly journals Effects of Shell and Low Moisture Content on Peanut Seed Longevity

2002 ◽  
Vol 29 (2) ◽  
pp. 122-125 ◽  
Author(s):  
N. Kameswara Rao ◽  
D. V. S. S. R. Sastry ◽  
P. J. Bramel
Keyword(s):  
Moisture Content ◽  
Low Cost ◽  
Seed Storage ◽  
Cost Effective ◽  
Storage Conditions ◽  
Medium Term ◽  
Short Term ◽  
Effective Strategies ◽  
Arachis Hypogaea L ◽  
High Germination

Abstract Peanut (Arachis hypogaea L.) germplasm accessions in ICRISAT genebank are conserved as pods under medium-term conditions (4 C and 30% RH). Pod storage requires far greater space than seed storage and is more likely to be expensive, especially in a controlled environment. With the objective to evolve cost effective strategies for conservation, the survival of in-shell and shelled seeds of two peanut cultivars, ICGS 76 (virginia bunch) and JL24 (spanish), was studied under three different storage conditions— ambient (20-40 C and 30-80% RH), short term (23-25 C and 40-50% RH), and medium term (4 C and 30% RH). In-shell seeds had marginally greater longevity than shelled seed in all storage conditions. The differences in time for regeneration of in-shell and shelled seeds stored under medium term conditions were estimated to be less than 4 mo for both the cultivars. Because of the much reduced volume required for storage and the insignificant differences in regeneration interval, conservation of shelled seeds would be highly cost-effective under the controlled environmental conditions, as compared to in-shell seeds. Since storage at very low moisture contents was suggested as a simple and low cost option for conservation of seed lots required for short-term use, the longevity of peanut seeds (cv. ICGS 76) hermetically sealed with 3.6% moisture content was studied in comparison with seeds held at 5.8% moisture. The studies showed that peanut seeds hermetically stored at room temperature (23-25 C) with low moisture content (below 4%) could retain high germination (> 85%) for up to 8 yr.

Barley seed storage under controlled conditions

2019 ◽  
pp. 140-150 ◽  
Author(s):  
O. A. Zadorozhna ◽  
T. P. Shyianova ◽  
M.Yu. Skorokhodov
Keyword(s):  
Hordeum Vulgare ◽  
Moisture Content ◽  
Spring Barley ◽  
Seed Storage ◽  
Growing Season ◽  
Storage Conditions ◽  
Meteorological Conditions ◽  
Hordeum Vulgare L ◽  
The Relationship ◽  
And Storage

Seed longevity of 76 spring barley gene pool samples (Hordeum vulgare L. subsp. distichon, convar. distichon: 56 nutans Schubl., two deficience (Steud.) Koern., two erectum Rode ex Shuebl., two medicum Koern.; convar. nudum (L.) A.Trof.: one nudum L. та subsp. vulgare: convar. vulgare: nine pallidum Ser., three rikotense Regel.; convar. coeleste (L.) A.Trof.: one coeleste (L.) A.Trof.) from 26 countries, 11 years and four places of reproduction was analyzed. Seeds with 5–8% moisture content were stored in chamber with unregulated and 4oC temperature. The possibility of seed storage under these conditions for at least 10 years without significant changes in germination has been established. The importance of meteorological conditions in the formation and ripening of seeds for their longevity is confirmed. The relationship between the decrease of barley seeds longevity and storage conditions, amount of rainfall, temperature regime during the growing season of plants is discussed.

scholarly journals Platforms for Production of Protein-Based Vaccines: From Classical to Next-Generation Strategies

Biomolecules ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1072
Author(s):  
Raquel Cid ◽  
Jorge Bolívar
Keyword(s):  
Infectious Diseases ◽  
Mammalian Cells ◽  
Vaccine Development ◽  
Low Cost ◽  
Cost Effective ◽  
Insect Larvae ◽  
Subunit Vaccines ◽  
Effective Strategies ◽  
Alternative Systems ◽  
Inactivated Vaccines

To date, vaccination has become one of the most effective strategies to control and reduce infectious diseases, preventing millions of deaths worldwide. The earliest vaccines were developed as live-attenuated or inactivated pathogens, and, although they still represent the most extended human vaccine types, they also face some issues, such as the potential to revert to a pathogenic form of live-attenuated formulations or the weaker immune response associated with inactivated vaccines. Advances in genetic engineering have enabled improvements in vaccine design and strategies, such as recombinant subunit vaccines, have emerged, expanding the number of diseases that can be prevented. Moreover, antigen display systems such as VLPs or those designed by nanotechnology have improved the efficacy of subunit vaccines. Platforms for the production of recombinant vaccines have also evolved from the first hosts, Escherichia coli and Saccharomyces cerevisiae, to insect or mammalian cells. Traditional bacterial and yeast systems have been improved by engineering and new systems based on plants or insect larvae have emerged as alternative, low-cost platforms. Vaccine development is still time-consuming and costly, and alternative systems that can offer cost-effective and faster processes are demanding to address infectious diseases that still do not have a treatment and to face possible future pandemics.

Performance Funding Policy Effects on Community College Outcomes: Are Short-Term Certificates on the Rise?

2017 ◽  
Vol 46 (1) ◽  
pp. 3-39 ◽  
Author(s):  
Amy Y. Li ◽  
Alec I. Kennedy
Keyword(s):  
Postsecondary Education ◽  
Performance Metrics ◽  
State Level ◽  
Cost Effective ◽  
Performance Funding ◽  
Funding Policy ◽  
Level Control ◽  
Medium Term ◽  
Short Term ◽  
The Impact

Objective: Performance funding (PF) policies allocate a portion of state funding to colleges based on student outcomes. This study is the first to account for policy type and design differences, and explores the impact of performance funding on three levels of credential completions: short-term certificates, medium-term certificates, and associate’s degrees. Method: We create a panel dataset of 751 two-year colleges from years 1990 to 2013 using data from the Integrated Postsecondary Education Data System. We conduct a series of analyses using difference-in-differences with the inclusion of college- and state-level control variables. Results: We find that, on average, performance funding produces no significant changes in completions of any of the three credentials. Policy types characterized by a greater proportion of funding tied to the base budget, mission differentiation in performance metrics, inclusion of underrepresented student metrics, and longer periods of operating years produce an increase in short-term certificates, no significant change in medium-term certificates, and a decrease in associate’s degrees. Contributions: This study’s findings suggest that because awarding more short-term certificates is a relatively quick and cost-effective way to capture performance funds, colleges might be engaging in a path of least resistance by churning out short-term certificates and redirecting focus away from associate’s degrees, which is concerning given that short-term certificates generally offer limited labor market benefits compared to medium-term certificates and associate’s degrees. Our results also underscore the importance of policy designs in explaining differential impacts on credential completion.

scholarly journals Primed Lettuce Seeds Exhibit Increased Sensitivity to Moisture Content During Controlled Deterioration

HortScience ◽  
2007 ◽  
Vol 42 (6) ◽  
pp. 1436-1439 ◽  
Author(s):  
H.J. Hill ◽  
Jesse D. Cunningham ◽  
Kent J. Bradford ◽  
A.G. Taylor
Keyword(s):  
Moisture Content ◽  
Elevated Temperatures ◽  
Seed Viability ◽  
Seed Storage ◽  
Seed Priming ◽  
Storage Conditions ◽  
Seed Moisture Content ◽  
Moisture Contents ◽  
Lettuce Seeds ◽  
Rate Of Decline

The Ellis-Roberts seed viability equation is used to predict seed survival after storage at specified temperatures and moisture contents. Seed priming, which can break dormancy and accelerate germination, can also reduce seed storage life. Because primed seeds were not used in developing the Ellis-Roberts equation, the reciprocal nature of specific seed moisture content (MC, fresh weight basis) and temperatures that applies to nonprimed lettuce (Lactuca sativa L.) seeds may not apply to primed seeds. To determine how priming affects lettuce seeds in relation to the viability equation, an experiment was conducted using two cultivars, ‘Big Ben’ and ‘Parris Island Cos’. Seeds primed in polyethylene glycol 8000 (–1.45 MPa, 24 h at 15 °C) and nonprimed seeds were first adjusted to 6% and 9% moisture contents and then stored at 48 and 38 °C for up to 30 days, respectively. These storage conditions (6% MC and 48 °C; 9% MC and 38 °C) were predicted by the viability equation to result in equal longevities. Subsequent viability assays at 20 °C revealed that nonprimed seeds in both storage environments exhibited similar losses in viability over time, thus validating the Ellis-Roberts equation and the use of these conditions to apply different but equal aging stress. Primed seeds of both cultivars deteriorated faster than nonprimed seeds as expected. However, primed seeds did exhibit different rates of deterioration between the storage environments. Primed seeds stored at 9% MC and 38 °C deteriorated faster than primed seeds stored at 6% MC and 48 °C. The rate of decline in probit viability percentage was three times greater in primed ‘Big Ben’ seeds stored at 9% MC and 38 °C than for those stored at 6% MC and 48 °C (–1.34 versus –0.26 probits per day, respectively). ‘Parris Island Cos’ seeds stored at 9% MC and 38 °C had twice the rate of deterioration that those stored at 6% MC and 48 °C (–1.19 and –0.49 probits per day, respectively). The results indicate that primed lettuce seeds were more sensitive to the adverse effects of higher seed MC than were nonprimed seeds during storage at elevated temperatures.

scholarly journals Immigrant women, nature and mental health

2020 ◽  
Vol 16 (4) ◽  
pp. 359-372
Author(s):  
Catherine Anne Nicole Lorentzen ◽  
Berit Viken
Keyword(s):  
Mental Health ◽  
Immigrant Women ◽  
Qualitative Content Analysis ◽  
Low Cost ◽  
Cost Effective ◽  
Well Being ◽  
Natural Environments ◽  
Content Type ◽  
Individual Interviews ◽  
Effective Strategies

Purpose There is a need for cost-effective strategies to counteract mental health challenges among immigrant women. This study aims to identify how nature might improve the mental health status of immigrant women residing in Norway. Design/methodology/approach Qualitative data were gathered through individual interviews with 14 immigrant women from Iran (2), Poland (2), Palestine, Afghanistan, Congo, Kenya, Thailand, Russia, Portugal, Latvia, Colombia and Bulgaria. Findings The qualitative content analysis revealed that interaction with nature positively influenced the immigrant women’s mental health. This occurred because of the following: exposure to nature itself, leading to mood enhancements; familiarization with the new country’s culture, nature, climate and language, facilitating feelings of mastery, attachment and belonging; social interactions, promoting immediate well-being and future social support; interacting with nature in familiar ways, reducing feelings of alienation/loss; and physical activity, improving mood and stress-related conditions. These mental health improvements were a result of interactions with various types of natural environments. Originality/value This study supports the promotion of interaction with nature among immigrant women as part of low-cost public health work. Practitioners should consider multiple arenas for potential nature-related mental health gains.

Short-term aerated hydration for the improvement of seed quality in Brassica oleracea L

1992 ◽  
Vol 2 (1) ◽  
pp. 41-49 ◽  
Author(s):  
J. M. Thornton ◽  
A. A. Powell
Keyword(s):  
Moisture Content ◽  
Seed Quality ◽  
Germination Rate ◽  
Germination Percentage ◽  
Short Term ◽  
Brussels Sprouts ◽  
High Germination ◽  
Controlled Deterioration ◽  
Improved Performance ◽  
Aged Seeds

AbstractSeeds of the Brussels sprouts cultivar Asmer Aries and the cauliflower cultivar Hipop were subjected to ageing at 20% moisture content and 45°C for 24 or 30 h, respectively; all seeds retained high germination after ageing. Aerated hydration of unaged and aged seeds of both cultivars for 4–8 h at a range of temperatures (10–30°C), followed by drying, resulted in improved performance, except that germination percentage and rate of cauliflower were lower at 10°C. Thus, all treated seeds showed greater germination rate and seedling root length than the control, which may have resulted from the advancement of the process of germination. The deleterious effect of aerated hydration at 10°C on cauliflower could be explained by damage due to rapid imbibition; seeds that had imbibed slowly to close to full imbibition (41% moisture content) before aerated hydration showed no decrease in germination. The improvement of aged seeds after aerated hydration was also revealed by higher germination after the controlled-deterioration test, which indicated less deterioration in treated seeds. Furthermore, the optimum improvements for all seeds were observed at 25°C and were greater when the water was aerated than non-aerated. These observations indicate the activation of metabolic repair processes during aerated hydration, leading to a reversal of the deterioration sustained during ageing.

scholarly journals Kinect V2 Performance Assessment in Daily-Life Gestures: Cohort Study on Healthy Subjects for a Reference Database for Automated Instrumental Evaluations on Neurological Patients

2017 ◽  
Vol 2017 ◽  
pp. 1-16 ◽  
Author(s):  
Alessandro Scano ◽  
Andrea Chiavenna ◽  
Matteo Malosio ◽  
Lorenzo Molinari Tosatti
Keyword(s):  
Healthy Subjects ◽  
Daily Life ◽  
Low Cost ◽  
Cost Effective ◽  
Major Effect ◽  
Healthy People ◽  
Reference Database ◽  
Kinect V2 ◽  
Effective Strategies ◽  
Neurological Patients

Background. The increase of sanitary costs related to poststroke rehabilitation requires new sustainable and cost-effective strategies for promoting autonomous and dehospitalized motor training. In the Riprendo@Home and Future Home for Future Communities research projects, the promising approach of introducing low-cost technologies that promote home rehabilitation is exploited. In order to provide reliable evaluation of patients, a reference database of healthy people’s performances is required and should consider variability related to healthy people performances.Methods.78 healthy subjects performed several repetitions of daily-life gestures, the reaching movement (RM) and hand-to-mouth (HtMM) movement with both the dominant and nondominant upper limbs. Movements were recorded with a Kinect V2. A synthetic biomechanical protocol based on kinematical, dynamical, and motor control parameters was used to assess motor performance of the healthy people. The investigation was conducted by clustering participants depending on their limb dominancy (right/left), gender (male/female), and age (young/middle/senior) as sources of variability.Results.Results showed that limb dominancy has minor relevance in affecting RM and HtMM; gender has relevance in affecting the HtMM; age has major effect in affecting RM and HtMM.Conclusions.An investigation of healthy subjects’ upper limb performances during daily-life gestures was performed with the Kinect V2 sensor. Findings will be the basis for a database of normative data for neurological patients’ motor evaluation.

scholarly journals Engineered Jute Bags for Storing Food Grains within Harrington’s Safe Zone of Seed Moisture Content

2021 ◽  
Author(s):  
Kennedy Odokonyero ◽  
Himanshu Mishra ◽  
Adair Gallo Junior
Keyword(s):  
Moisture Content ◽  
Low Cost ◽  
Seed Storage ◽  
Water Repellent ◽  
Seed Moisture Content ◽  
Post Harvest ◽  
Food Grains ◽  
Seed Moisture ◽  
Jute Fabrics ◽  
Jute Bags

<p>Harrington’s thumb rule states that for every 1% increase in seed moisture content (SMC), seed lifetime decreases by 50%. Thus, to avoid post-harvest grain losses, stored seeds must be insulated from water. Although the jute bags typically used to store grains afford an ecofriendly, durable, and low-cost storage solution, their hydrophilic nature makes them vulnerable to wetting from airborne humidity and precipitation events. To address this issue, we treated jute fabrics with alkali and wax to render them water-repellent. A 2-month seed storage experiment revealed that wax-coated jute bags (WCJBs) outperformed control jute bags (CJBs) at safeguarding wheat (<i>Triticum aestivum</i>) grains exposed to 55%–98% relative humidity. Specifically, grains stored in WCJBs exhibited 15%–50% less SMC than grains stored in CJBs, which led to a 21%–66% enhancement in the germination efficacy of WCJB-stored seeds. This engineering solution could enhance the potential of jute bags to reduce post-harvest losses.</p>

scholarly journals Physalis peruviana seed storage

2016 ◽  
Vol 20 (3) ◽  
pp. 263-268 ◽  
Author(s):  
Cíntia L. M. de Souza ◽  
Manuela O. de Souza ◽  
Ronaldo S. Oliveira ◽  
Claudineia R. Pelacani
Keyword(s):  
Moisture Content ◽  
Chloride Solution ◽  
Storage Period ◽  
Seed Storage ◽  
Germination Percentage ◽  
Physalis Peruviana ◽  
High Germination ◽  
Different Temperatures ◽  
Solanaceae Family ◽  
Kinetics Of

ABSTRACT Physalis peruviana belongs to Solanaceae family and has a high nutritional and nutraceutical potential. The production is intended for fruit consumption and the propagation is mainly by seeds. This study aimed to evaluate the influence of priming on the kinetics of germination of P. peruviana seeds stored at different temperatures. The seeds were stored at 5 and 25 °C in a chamber saturated with zinc chloride solution and in liquid nitrogen (-196 °C). Every 4 months, the seeds were removed from storage for evaluation of germination and moisture content in the laboratory and emergence and development of seedlings in greenhouse. During the last evaluation at 16 months, the seeds under the same conditions were subjected to salt stress. The moisture content varied during the storage period, but was always higher for seeds kept at -196 ºC. These seeds kept high germination percentage in water until 16 months, regardless of the tested temperature; however, in salt solution the germination percentage was significantly reduced.

Design analysis of a microcontroller based Irrigation system

2020 ◽  
Vol 15 (2) ◽  
pp. 13-21
Author(s):  
A.A. Okandeji ◽  
M.B. Olajide ◽  
A.A. Ponnle ◽  
D.S. Kuponiyi
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Water Supply ◽  
Lower Limit ◽  
Irrigation System ◽  
Low Cost ◽  
Irrigation Management ◽  
Sprinkler Irrigation ◽  
Cost Effective ◽  
Design Analysis

This work considers the design analysis of a low-cost microcontroller-based irrigation controller capable of managing irrigation for a small area of land based on real-time values of soil moisture and temperature. The method employed is to continuously monitor the soil moisture level to decide whether irrigation is needed, and how much water is needed in the soil. In particular, the microcontroller based circuit device performs the action of irrigation management. Specifically, it does this by continuously monitoring the moisture content of the soil, and comparing the values with two set reference values; the upper-limit, and lower-limit moisture content values, and then induces the corresponding action required. When the soil moisture content goes below the lower-limit value set by the user, the system observes this and begins irrigation action. Results obtained show that this design is cost-effective, and guarantees efficient water supply and effective labor management. Also, irrigation test results show that the duration of spray largely depends on the soil texture, grass identity and moisture content. In particular, sprinkler irrigation method in loamy soil took longer than in sandy soil, while clay soil irrigation took the longest time. Keywords: Automatic-Irrigation Controller, Irrigation, Microcontroller, Water-supply

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