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"Sunshine."
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What does sunlight do?
Readers will learn the ins and outs of what sunlight does in this book. Accessible text and appealing photos show sunlight how affects Earth and encourage readers to think about how sunlight affects their own environment.
Book
Effect of Sun Exposure of the Horse Chestnut
The study of the leafmining moth of the chestnut miner (Cameraria ohridella Deschka & Dymić, 1986) was carried out through the planting of the common horse chestnut (Aesculus hippocastanum L.) in the Main Botanical Garden of the Russian Academy of Sciences. The effect of various degrees of insolation of horse chestnut plants on leaf morphology and the composition of secondary metabolites, as well as the relationship of these parameters with the number and density of C. ohridella populations during the growing season, was studied. The solar influence, it was noted, had a significant impact. Thus, the largest number of the pests was recorded on the leaves of the sunlit side of the tree crown, and the smallest on the leaves of the shady part of the crown. The low content of polyphenols in the pool of secondary metabolites in the tissues of the A. hippocastanum leaves did not deter C. ohridella and poorly protected the plants from this miner, while the significant content of carbohydrates in the leaves reduced the resistance of chestnut plants to damage by the Ohrid leaf miner.
Journal Article
Sunshine
\"Through stunning photographs and simple text, books in this series introduce children to different types of weather. In Sunshine, children learn what sunshine is, how the sun moves, when the sun is strongest, how to stay safe in the sun, and why sunshine is an important part of our weather\"-- Provided by publisher.
Book
Sunshine duration measurements and predictions in Saharan Algeria region: an improved ensemble learning approach
Sunshine duration is an important atmospheric indicator used in many agricultural, architectural, and solar energy applications (photovoltaics, thermal systems, and passive building design). Hence, it should be estimated accurately for areas with low-quality data or unavailable precise measurements. This paper aimed to obtain a sunshine duration measurement database in Algeria’s south region and also to study the applicability of computational models to predict them. This work develops ensemble learning models for assessing daily sunshine duration with meteorological datasets that include daily mean relative humidity, daily mean air temperature, daily maximum air temperature, daily minimum air temperature, and daily temperature range as input. The study proposes a unique hybrid model, combining grey wolf and stochastic fractal search (GWO-SFS) optimization algorithms with the random forest regressor ensemble. A pre-feature selection process improved the newly suggested model. Various commonly adopted algorithms in relevant studies have been considered as references for evaluating the new hybrid algorithm. The accuracy of models was examined as a function of some frequently used statistical pointers, as well as the Wilcoxon rank-sum test. Besides, the models were evaluated according to the several input combinations. The numerical experiments show that the proposed optimization ensemble with feature preprocessing outperforms stand-alone models in terms of prediction accuracy and robustness, where relative root mean square errors are reduced by over 20% for all considered locations. In addition, all correlation coefficients are higher than 0.999. Moreover, the proposed model, with RMSEs lower than 0.4884 hours, shows significantly superior performances compared to previously proposed models in the literature.
Journal Article
Sunshine and drought
Learn all about sunshine, what it is, why it is important, and how it affects our world.
Book
The association of sun exposure, ultraviolet radiation effects and other risk factors for pterygium rural populations of India -3rd report of the ICMR-EYE SEE study group
Purpose To determine the prevalence and risk factors for pterygium in geographically diverse regions of India. Methods A population-based, cross-sectional multicentric study was conducted in adults aged [greater than or equal to]40 years in plains, hilly and coastal regions of India. All participants underwent a detailed questionnaire-based assessment for sun exposure, usage of sun protective measures, exposure to indoor smoke, and smoking. Detailed ocular and systemic examinations were performed. Pterygium was diagnosed and graded clinically by slit-lamp examination. Association of pterygium with sociodemographic, ophthalmological, and systemic parameters was assessed. Physical environmental parameters for the study period were estimated. Results Of the 12,021 eligible subjects, 9735 (81% response rate) participated in the study. The prevalence of pterygium in any eye was 13.2% (95% CI: 12.5%-13.9%), and bilateral pterygium was 6.7% (95% CI: 6.2-7.2). The prevalence increased with age (<0.001) irrespective of sex and was highest in those aged 60-69 years (15.8%). The prevalence was highest in coastal (20.3%), followed by plains (11.2%) and hilly regions (9.1%). On multi-logistic regression, pterygium was positively associated with coastal location (P<0.001), illiteracy (P = 0.037), increasing lifetime sun exposure (P<0.001), and negatively associated with BMI [greater than or equal to]25 kg/m2 (P = 0.009). Conclusion Pterygium prevalence is high in the rural Indian population. The association of pterygium with several potentially modifiable risk factors reflects its multifactorial etiology and provides targets for preventive measures.
Journal Article
Does the sun make weather?
\"Explains in simple terms how the sun makes weather and includes a glossary and the water cycle\"--Provided by publisher.
BOOK
The association of sun exposure, ultraviolet radiation effects and other risk factors for pterygium
To determine the prevalence and risk factors for pterygium in geographically diverse regions of India. A population-based, cross-sectional multicentric study was conducted in adults aged [greater than or equal to]40 years in plains, hilly and coastal regions of India. All participants underwent a detailed questionnaire-based assessment for sun exposure, usage of sun protective measures, exposure to indoor smoke, and smoking. Detailed ocular and systemic examinations were performed. Pterygium was diagnosed and graded clinically by slit-lamp examination. Association of pterygium with sociodemographic, ophthalmological, and systemic parameters was assessed. Physical environmental parameters for the study period were estimated. Of the 12,021 eligible subjects, 9735 (81% response rate) participated in the study. The prevalence of pterygium in any eye was 13.2% (95% CI: 12.5%-13.9%), and bilateral pterygium was 6.7% (95% CI: 6.2-7.2). The prevalence increased with age (<0.001) irrespective of sex and was highest in those aged 60-69 years (15.8%). The prevalence was highest in coastal (20.3%), followed by plains (11.2%) and hilly regions (9.1%). On multi-logistic regression, pterygium was positively associated with coastal location (P<0.001), illiteracy (P = 0.037), increasing lifetime sun exposure (P<0.001), and negatively associated with BMI [greater than or equal to]25 kg/m2 (P = 0.009). Pterygium prevalence is high in the rural Indian population. The association of pterygium with several potentially modifiable risk factors reflects its multifactorial etiology and provides targets for preventive measures.
Journal Article
The day the sun did not rise and shine
Owl is drowsy from a long night's work. He makes a wrong turn on his way to bed. Why hasn't the sun risen? Where is the sunshine for the new day? It's up to Owl to find the sun and help it rise and shine.
Book
Viability Analysis of Value-Added IEngraulicypris sardella/I Obtained Using Parboiling and Sun-Drying Processing Methods in Nkhotakota District, Malawi
This research aimed to assess the added value of sun-dried and parboiled Engraulicypris sardella (usipa) products as a basis for determining their viability in terms of business. To this end, a survey was conducted in Nkhotakota District at 12 sites (beaches), where fresh usipa commonly lands and is processed as sun-dried and parboiled fish. A proportional stratified method was used to determine the number of respondents, followed by a simple random sampling technique to select 57 E. sardella processors. An interview with a structured questionnaire was conducted to collect data from these E. sardella processors. The Hayami method was used to analyze the added value of Usipa products, and the viability of the sun-dried and parboiled processing method was determined on the basis of the revenue/cost ratio. The results of the study show that both sun-dried and parboiled usipa products generate positive added value, being greater for the latter than the former. Thus, sun-dried and parboiled usipa are profitable, with the highest revenue/cost ratio of the two being for parboiled usipa. We conclude that while sun-dried and parboiled usipa are both viable products, the viability of the business is more greatly enhanced when fish is parboiled rather than sun-dried.
Journal Article