Sombreamento na produção inicial de hastes florais de Strelitzia reginae em Acorizal, MT

The aim of this study was to evaluate the solar radiation effect in greenhouses for initial production of flower stalks of Strelitzia reginae. We evaluated number, height, diameter and fresh weight of buds and inflorescence lengths. The yield was higher in full sun, with 37 flower stalks and fresh weight of 100.2 g, followed by A3 environmental, with 24 rods and medium weight which did not differ significantly from the previous 18 and A5 showed rods with variables similar to previous environments, but with fresh weight (79.74 g) and diameters inferior to the other environments, while the A2 and A4 environments did not yield. The number, height, diameter and fresh weight of stems, reaching its highest values in environments with up to 30% shade and in conditions where light is limited, there is delay in the initial production of flower stalks. The radiation ensures the production process, but when it focuses directly on the plant, combined with other environmental factors like temperature and relative humidity, affects the pattern of trade of culture.

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Effect of storage system and sprout removal on post-harvest yam (Dioscorea spp.) fresh weight losses

The Journal of Agricultural Science ◽

10.1017/s0021859698005322 ◽

1998 ◽

Vol 130 (3) ◽

pp. 329-336 ◽

Cited By ~ 6

Author(s):

O. GIRARDIN ◽

C. NINDJIN ◽

Z. FARAH ◽

F. ESCHER ◽

P. STAMP ◽

...

Keyword(s):

Weight Loss ◽

Relative Humidity ◽

Solar Radiation ◽

Storage Systems ◽

Storage System ◽

The Other ◽

Fresh Weight ◽

Effective Protection ◽

Weight Losses ◽

Range Of Variation

Two aspects of yam storage practice were tested from 1994 to 1995 in central Côte d'Ivoire. The first experiment compared the storage environment in pits or sheds with that of the traditional yam open barn method. The pits allowed the daily range of variation in temperature to be reduced while maintaining a high relative humidity (RH), whereas the temperature and RH in the sheds were similar to those of the yam barns. Differences in temperature and RH between the storage systems had little effect on the fresh weight losses of the tubers. The more effective protection against solar radiation and rain afforded by the sheds and pits reduced fresh weight losses in D. cayenensis rotundata by 12% over 6·5 months in comparison with the barns. The second experiment tested the regular removal of the sprouts. Sprout removal reduced fresh weight losses equally over 5 and 6 months' storage. The reduction in fresh weight loss was 12% for cv. Gnan (D. cayenensis rotundata) during 6 months' storage. Monthly sprout removal gave an equal benefit in pits, in sheds and on yam barns. The monthly cutting of sprouts at the base should be encouraged in places where this is not already done. The total loss is mainly determined by the growth of the sprouts and the reduction in weight after onset of sprouting, which are highly dependent on species and cultivar. Bètè bètè yams had better keeping qualities than all the other cultivars tested.

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Building environmental history for Naval aircraft

Corrosion Reviews ◽

10.1515/corrrev-2019-0022 ◽

2019 ◽

Vol 37 (5) ◽

pp. 367-375

Author(s):

William C. Nickerson ◽

Mehdi Amiri ◽

Nagaraja Iyyer

Keyword(s):

Relative Humidity ◽

Environmental Factors ◽

Environmental History ◽

Predictive Models ◽

Corrosion Damage ◽

Environmental Data ◽

The Other ◽

Operating Environment ◽

Aircraft Structure ◽

Damage Development

AbstractThe operating environment of Navy aircraft varies to a good degree depending upon the squadron location, flight requirements, and other field and ground activities. All these conditions promote corrosion of one type or the other. The aircraft operations will also have influence on the type of corrosion. Thus, building an environment history that can monitor and track the damage development in many areas of the aircraft structure based on aircraft activities, operating environment, and service history data is crucial. The development of such environmental history builder has two main advantages: first, it provides a tool to treat corrosion as a structural issue, and second, it accounts for time variation of environmental factors such as relative humidity (RH) and temperature rather than average environmental data. This paper will demonstrate how the environmental history builder could be used, in conjunction with predictive models, to predict corrosion damage.

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EFFECT OF SOLAR RADIATION INTENSITY ON THE VEGETATIVE GROWTH AND YIELD OF COFFEE

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v26i4.13586 ◽

1969 ◽

Vol 26 (4) ◽

pp. 73-90

Author(s):

J. Guiscafré Arrillaga ◽

Luis A. Gómez

Keyword(s):

Soil Moisture ◽

Relative Humidity ◽

Solar Radiation ◽

Ecological Factors ◽

The Other ◽

Growth And Yield ◽

Full Sunlight ◽

Solar Radiation Intensity ◽

Yearly Average ◽

One Year

Tn this study, four ecological factors were observed: solar radiation, air temperature, relative humidity and soil moisture. Of the four, solar radiation fluctuates more than any other and undoubtedly the other threefactors are influenced by solar radiation to a great extent. 1—Solar radiation varies widely with season and year. 2—The greatest intensity takes place during the months of June to September and the lowest from November to February. 3—The greatest intensity recorded under full sunlight was 1.91 gr. cal./ min./ cm.2 and the lowest was 1.35 gr. cal./ min./ cm.2. 4—The yearly average solar radiation under full sunlight was 144,754. 40 gr. cal./ cm.2. 5—The cumulative radiation for the 3 years that lasted the experiment was 434,263.20 gr. cal./ cm.2, under full sunlight. 6—Shade regulates solar radiation making it more uniform from one year to the other. 7-As solar radiation increases, growth and yield of coffee decrease. 8—Yield, and growth of coffee were definitely higher under 1/2 and 1/3 than under 2/3 and full sunlight. 9—Statistically significant differences in yield, were not found between plots with 1/2 and 1/3 sunlight. Growth was significantly higher under 1/3 exposure. 10—Radiation, produces distinctive formative effects on coffee. Plants under full sunlight were very weak, chlorotie and poorly developed. 11—Four ecological factors were measured: solar radiation, temperature, relative humidity and soil moisture. All are affected by radiation to a great extent, but other factors as vegetation have also some effect. 12—Solar radiation is negatively correlated with yields and growth. 13—Growth and yields are positively correlated. As expected low temperature and yield are associated and soil moisture acts independently in relation to growth. 14—Plants under full sunlight accumulated greater amounts of nitrogen and potash and to a less extent of phosphorous than under any other exposure. 15—An average of 53,143.20 gram calories per square centimeter per year is the optimum cumulative solar radiation for yield and growth of coffee. This amount is obtainable under natural shade of Guaba trees (Inga Inga) planted at not less than 16 x 16 feet.

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Influence of Genotype and Environment on the Diterpenes in the Wax Layer of Some Flue-cured Tobaccos/Einfluss von Genotyp und Umwelt auf die Diterpene in der Wachsschicht einiger „flue-cured“–Tabake

Beiträge zur Tabakforschung International/Contributions to Tobacco Research ◽

10.2478/cttr-2013-0504 ◽

1981 ◽

Vol 11 (2) ◽

Author(s):

V. Heemann ◽

U. Brümmer ◽

G. Spremberg ◽

F. Seehafer

Keyword(s):

Environmental Factors ◽

The Other ◽

Fresh Weight ◽

Other Hand

AbstractThe composition of the wax layer of some flue-cured tobaccos that were grown under the same conditions in the U. S. A., Brazil and Germany was examined by means of GC and GC/MS. The total amount of wax layer (referring to fresh weight) is significantly influenced neither by the genotype nor by environmental factors. The content of diterpenes, on the other hand, is controlled both genetically and by environmental factors, as it was possible to show taking a- and b-4,8,13-duvatrien-1,3-diol and 4,8,13-duvatrien-1-ol. The concentration of compounds such as norsolandion and nicotine appears to be affected to a great extent or exclusively by environmental factors.

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Detrended Multiple Cross-Correlation Coefficient applied to solar radiation, air temperature and relative humidity

Scientific Reports ◽

10.1038/s41598-019-56114-6 ◽

2019 ◽

Vol 9 (1) ◽

Cited By ~ 2

Author(s):

Andrea de Almeida Brito ◽

Heráclio Alves de Araújo ◽

Gilney Figueira Zebende

Keyword(s):

Relative Humidity ◽

Solar Radiation ◽

Solar Energy ◽

Correlation Coefficient ◽

Air Temperature ◽

Cross Correlation ◽

Global Solar Radiation ◽

Meteorological Variables ◽

Hourly Data ◽

Cross Correlations

AbstractDue to the importance of generating energy sustainably, with the Sun being a large solar power plant for the Earth, we study the cross-correlations between the main meteorological variables (global solar radiation, air temperature, and relative air humidity) from a global cross-correlation perspective to efficiently capture solar energy. This is done initially between pairs of these variables, with the Detrended Cross-Correlation Coefficient, ρDCCA, and subsequently with the recently developed Multiple Detrended Cross-Correlation Coefficient, $${\boldsymbol{DM}}{{\boldsymbol{C}}}_{{\bf{x}}}^{{\bf{2}}}$$DMCx2. We use the hourly data from three meteorological stations of the Brazilian Institute of Meteorology located in the state of Bahia (Brazil). Initially, with the original data, we set up a color map for each variable to show the time dynamics. After, ρDCCA was calculated, thus obtaining a positive value between the global solar radiation and air temperature, and a negative value between the global solar radiation and air relative humidity, for all time scales. Finally, for the first time, was applied $${\boldsymbol{DM}}{{\boldsymbol{C}}}_{{\bf{x}}}^{{\bf{2}}}$$DMCx2 to analyze cross-correlations between three meteorological variables at the same time. On taking the global radiation as the dependent variable, and assuming that $${\boldsymbol{DM}}{{\boldsymbol{C}}}_{{\bf{x}}}^{{\bf{2}}}={\bf{1}}$$DMCx2=1 (which varies from 0 to 1) is the ideal value for the capture of solar energy, our analysis finds some patterns (differences) involving these meteorological stations with a high intensity of annual solar radiation.

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Exposure Assessment of Airborne Bacteria Emitted from Swine Manure Composting Plant

Processes ◽

10.3390/pr9081283 ◽

2021 ◽

Vol 9 (8) ◽

pp. 1283

Author(s):

Ki-Youn Kim

Keyword(s):

Relative Humidity ◽

Environmental Factors ◽

Swine Manure ◽

Airborne Bacteria ◽

Particulate Matters ◽

Distribution Characteristics ◽

E Coli ◽

Enterococcus Spp ◽

Staphylococcus Spp ◽

Rotary Type

This study was performed to investigate the distribution characteristics of airborne bacteria emitted from swine manure composting plants. The types of swine manure composting plants selected for the survey in this study were as follows: screw type, rotary type, and natural dry type. Mean levels of airborne bacteria in swine manure composting plants were 7428 (±1024) CFU m−3 for the screw type, 3246 (±1407) CFU m−3 for the rotary type, and 5232 (±1217) CFU m−3 for the natural dry type, respectively. Based on the results obtained from this study, the swine manure composting plant operated by screw type showed the highest concentration of airborne bacteria, followed by the natural dry type and rotary type. The monthly concentration of airborne bacteria was the highest in August and the lowest in November, regardless of the type of swine manure composting plant. The respirable size of airborne bacteria accounted for about 50% of the total. The ratio of respirable to the total quantity of airborne bacteria was 50%. The correlation relationships between airborne bacteria and environmental factors (temperature, relative humidity, particulate matters, and odor) were not found to be significant in the swine manure composting plants. The predominant genera of airborne bacteria identified were Micrococcus spp., Staphylococcus spp., Escherichia(E-coli) spp., Enterococcus spp., and Enterobacteriaceae spp.

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Solar Radiation, Air Temperature, Relative Humidity, and Dew Point Study: Damak, Jhapa, Nepal

International Journal of Photoenergy ◽

10.1155/2019/8369231 ◽

2019 ◽

Vol 2019 ◽

pp. 1-7 ◽

Cited By ~ 1

Author(s):

Arun Kumar Shrestha ◽

Arati Thapa ◽

Hima Gautam

Keyword(s):

Relative Humidity ◽

Solar Radiation ◽

Air Temperature ◽

Gaussian Function ◽

Great Influence ◽

Dew Point ◽

Upward Trend ◽

Summer Maximum ◽

Online Calculator ◽

Climatic Phenomenon

Monitoring and prediction of the climatic phenomenon are of keen interest in recent years because it has great influence in the lives of people and their environments. This paper is aimed at reporting the variation of daily and monthly solar radiation, air temperature, relative humidity (RH), and dew point over the year of 2013 based on the data obtained from the weather station situated in Damak, Nepal. The result shows that on a clear day, the variation of solar radiation and RH follows the Gaussian function in which the first one has an upward trend and the second one has a downward trend. However, the change in air temperature satisfies the sine function. The dew point temperature shows somewhat complex behavior. Monthly variation of solar radiation, air temperature, and dew point shows a similar pattern, lower at winter and higher in summer. Maximum solar radiation (331 Wm-2) was observed in May and minimum (170 Wm-2) in December. Air temperature and dew point had the highest value from June to September nearly at 29°C and 25°C, respectively. The lowest value of the relative humidity (55.4%) in April indicates the driest month of the year. Dew point was also calculated from the actual readings of air temperature and relative humidity using the online calculator, and the calculated value showed the exact linear relationship with the observed value. The diurnal and nocturnal temperature of each month showed that temperature difference was relatively lower (less than 10°C) at summer rather than in winter.

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EFFECTS OF ENVIRONMENT ON GROWING HYDROPONICS MAIZE FODDER USING LOW-COST GREENHOUSE CULTIVATING UNIT FOR LIVESTOCK PRODUCTION.

10.36106/ijsr/0431788 ◽

2021 ◽

pp. 71-72

Author(s):

Adamu, B. ◽

Abdullahi, S. ◽

Saidu, S. G ◽

Yustus Sunday Francis

Keyword(s):

Relative Humidity ◽

Environmental Factors ◽

Production System ◽

Low Cost ◽

Factors Affecting ◽

Production Water ◽

Fodder Production ◽

Food Requirement ◽

Greenhouse Cultivation ◽

Near Future

The term 'Hydroponics' was derived from Greek words 'hydro' means water and 'ponics' means labor. Hydroponic is a modern agricultural technique that uses nutrient solution rather than soil solution for fodder production. As population increases the food demand also increased, the existing system of agriculture will not be able to meet the food requirement in the near future due to environmental challenges in the industry. The major environmental factors affecting the hydroponics production system are; Temperature, relative humidity, and light. The objectives of this studies are to examine the hydroponics greenhouse technologies, impact of environmental factors on hydroponics greenhouse cultivation and challenges of growing on hydroponics greenhouse system. This study revealed that hydroponics greenhouse cultivation is a better option for improved fodder production, water utilization, palatability and digestibility.

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Genetic or Psychogenic? A Case Study of “Folie à Quatre” Including Twins

Case Reports in Psychiatry ◽

10.1155/2015/983212 ◽

2015 ◽

Vol 2015 ◽

pp. 1-3 ◽

Cited By ~ 1

Author(s):

Tohru Ohnuma ◽

Heii Arai

Keyword(s):

Environmental Factors ◽

Social Isolation ◽

Schizophrenia Patient ◽

Monozygotic Twins ◽

The Other ◽

Positive Symptoms ◽

Short Period ◽

The Common ◽

Shared Psychotic Disorder

Shared psychotic disorder, characterized by shared delusion among two or more subjects (termed “Folie à deux,” “trois,” etc.), is often associated with strong religious beliefs or social isolation, factors creating strong psychological sympathy. Recently, we treated a rare familial case of “Folie à quatre” in central Tokyo without such influences. The proband was a schizophrenia patient and younger brother within monozygotic twins. Positive symptoms were “transmitted” to remaining family members, his elder brother, mother, and father father, in a relatively short period of three months. Although the pathophysiology of these positive symptoms (delusions and hallucinations) remains unclear, the transmission pattern suggests the primacy of social and environmental factors (and/or their interaction), while genetics appeared less influential in this “Folie à famille.” Although undiagnosed psychoses in the whole family cannot be excluded, they did not share the other negative schizophrenia symptoms of the proband. A strong familial connection appeared to be the most important factor for the common delusion and hallucination.

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Growth and Physiological Characteristics of Lettuce (Lactuca sativa L.) and Rocket (Eruca sativa Mill.) Plants Cultivated under Photovoltaic Panels

Notulae Botanicae Horti Agrobotanici Cluj-Napoca ◽

10.15835/nbha46110846 ◽

2018 ◽

Vol 46 (1) ◽

pp. 206-212 ◽

Cited By ~ 9

Author(s):

Angeliki KAVGA ◽

Georgios TRYPANAGNOSTOPOULOS ◽

George ZERVOUDAKIS ◽

Yiannis TRIPANAGNOSTOPOULOS

Keyword(s):

Solar Radiation ◽

Photosynthetic Rate ◽

Lactuca Sativa ◽

The Other ◽

Physiological Characteristics ◽

Eruca Sativa ◽

Partial Shading ◽

Photovoltaic Panels ◽

Lactuca Sativa L ◽

Other Hand

Energy demand of greenhouses is an important factor for their economics and photovoltaics can be considered an alternative solution to cover their electrical and heating needs. On the other hand, plants cultivated under different solar radiation intensities usually appear different physiological adaptations. The objective of this research was to investigate the effect of photovoltaic panels’ induced partial shading on growth and physiological characteristics of lettuce (Lactuca sativa L.) and rocket (Eruca sativa Mill.) plants. Our results indicate that lettuce productivity and the corresponding photosynthetic rate were not affected under the photovoltaic cultivation in comparison with the reference one. On the other hand, the rocket cultivation was less productive and showed lower photosynthetic rate under photovoltaic panels than in the reference greenhouse. The different physiological response between lettuce and rocket seems to be associated with the effect of environmental factors such as solar radiation intensity, temperature and humidity apart from the possible inherent characteristics of each plant species.

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