The effects of rainfall

Xem 1-20 trên 76 kết quả The effects of rainfall
  • This study presents a procedure for calculating the change of the safety factor for unsaturated slopes of homogenous, residual soils suffering from rainfall infiltration within Khanh Vinh district, Khanh Hòa province. Rainfall is supposed as a main trigger caused failure of the potential sliding slopes. Rainwater into the slope due to infiltration caused an increase in moisture content and negative pore water pressure; a decrease in matric suction and in shear strength on the failure surface.

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  • In this research, we lay out a model to estimate the effect of rainfall by simulating the actual physical processes of the rain drops forming on the surface of the blades of a vertical-axis wind turbine (VAWT), thereby determining optimal wetness, then power and performance respectively. This could have an effect on the control strategy necessary for designing and controlling wind turbine.

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  • Present study examines the effect of climatic factor e.g. Temperature (Maximum and Minimum), Relative humidity (Morning and Evening), Evaporation and Rainfall variation on the yield of different stages of wheat in Samastipur district of Bihar by using Box plot method. The data of wheat yield of 29 Years (1984-2013) was taken from Department of Agricultural Economics, RAU, Pusa and Weather Variables (1984-2013) was taken from Agro-metrology Unit, RAU, Pusa. Box plot will used to estimate the effect of climate variables on the stages of wheat yield.

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  • This report was originally released in December 2004 in prepublication form as the first report of a two-phase study to be carried out by the same committee. The first phase was sponsored by the National Aeronautics and Space Administration (NASA) and focused on the Tropical Rainfall Measuring Mission (TRMM). The second phase was sponsored by the National Oceanic and Atmospheric Administration and focused on the Global Precipitation Measurement mission. The report of the second phase will be published in a separate volume in 2006.

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  • Tham khảo sách 'assessment of the benefits of extending the tropical rainfall measuring mission a perspective from the research and operations communities', khoa học tự nhiên, địa lý phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • The objectives of sowing operation are to put the seed along with fertilizer in rows at desired depth and seed to seed spacing, cover the seeds with soil and provide proper compaction over the seed. The machinery such as seed cum fertilizer drill with attachment of furrow irrigated raised bed (FIRB), broad bed furrow (BBF) and ridge & furrow systems are used to sow the seeds on raised beds in a pulverized soil so as to allow easy emergence of seed with proper moisture availability and better drainage during excess rainfall events.

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  • Field experiments were conducted at Instructional Farm, Navsari Agricultural University, Navsari during kharif and summer seasons of 2010-11 and 2011-12 to know the effect of intra row spacing and weed management in cotton under heavy rainfall zone of South Gujarat.

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  • Sowing time of rice sometimes get delayed due to lack of assured irrigation or surplus of rainfall. Moreover, no specific varieties have been specifically developed for this purpose. An experiment was conducted to study the effect of sowing dates and varieties on economics and soil properties of direct seeded rice in 2018 at Agricultural Research Station, Dhadesugur in Karnataka.

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  • In this study, analyzed the long-term changes in temperature and precipitation in the Sirmaur district of Himachal Pradesh to understand the climate change impact on regional weather. Current (2001-2010) and past (1984-2000) climatic scenario revealed that the region has experienced increase in maximum and minimum temperature. Temperatures in different seasons of the year viz. winter, spring, summer and autumn have shown increasing trends, whereas the precipitation in the form of rainfall decreased except in autumn season.

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  • Beside the effect of gravitational forces, the water level in Sai Gon-Dong Nai River System is also affected by non gravitational forces such a wind, air pressure, rainfall and sea level rise. The purpose of this paper is to simulate the water level of these river based on the tidal and non-tidal constituents, from that assess the role of non-tidal constituents to water variation. In this study, the none-tidal data used includes the wind field at surface, sea level pressure and the rainfall in Sai Gon- Dong Nai Basin. With the analyzed data series from 1980 to 2007, the results...

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  • Due to climate change, the agro-climatic indicators in Son La province has changed in the following trends: (i) the total heat in the Winter - Spring crop and the Summer crop as well as the total annual heat have increased; (ii) The amount of time in a year with temperature below 20 degrees has shortened; the amount of time in a year with temperatures above 25 degrees has lengthened; (iii) the absolute minimum temperature tends to increase rapidly; (iv) the rainfall in Winter - Spring crop has increased slightly whereas the season rainfall and total annual rainfall tend to decrease.

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  • Temperature and rainfall changes are both significant components of climate change. This study characterizes the effects of climate change on water resources in the Büyük Menderes river basin in western Turkey, based on hydrology, temperature, and rainfall data from the past 45 years (1963-2007).

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  • The data correlated regarding the effect of atmospheric temperature, relative humidity and rainfall on disease development during 2002-03 and 2003-04 revealed that, moderate relative humidity accompanied by nearly moderate temperature favoured disease development in both the years. The maximum disease development was recorded in the second fortnight of November during both the years. The average maximum and minimum temperatures and relative humidities were 29.7ºC, 13.6ºC and 87.5, 39.

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  • Climate is the primary determinant of agricultural productivity. Climate change effects agricultural operations in a number of ways, including through changes in average temperatures, rainfall, and climate extremes. Concern over the potential effects of longterm climatic change on agriculture has motivated a substantial body of research over the past decade. The present study was conducted in Dharwad districts of Karnataka state during 2016-17.

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  • The study was conducted in the Protected Forest area of Tuhaha Village, Saparua SubDistrict, Mollucas Province, in May - July 2018 to determine the presence, abundance, diversity and evenness of ant species in relation to climate change in Mollucas. Ants were collected by three methods, namely Hand Collecting, Pitfall trap with soapy water bait using a detergent brand Rinso, bait trap with sugar water bait and tuna fish. The results of the study found 35 species of ants as many as 1866 tails, the diversity of species 1.47 were classified as moderate, species richness 4.

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  • Pigeonpea is an important pulse crop is known to attack by wide range of insect pests from seedling stage to storage. Among these, recently gall weevil causing threat to pigeonpea at seedling stage. Results revealed that pigeonpea late sown crop will suffer much with more than 73.30 percent damage and the early sown crop escapes with only 30 percent damage at 30 DAS. The rainfall and minimum temperature showed negative correlation(-0.344, -0.330 with minimum temperature at 20 and 30 DAS, -0.658, -0.

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  • A field experiment was conducted during 2016 and 2017 at the Regional Centre of Indian Council of Agricultural Research-Central Tuber Crops Research Institute, Bhubaneswar, Odisha to study the effect of climate on weed management practices in elephant foot yam [Amorphophallus paeoniifolius (Dennst.) Nicolson]. Higher average monthly maximum temperature was noticed during early crop growth period (vegetative phase) in 2017 compared to 2016.

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  • Global warming is a great concern throughout the world. The ill effects of global warming like change in climate, temperature, rainfall, humidity, level of carbon di-oxide has been found to have both positive and negative effects on insects, which in turn reduces the effectiveness of crop protection measures. This creates the need for global warming to be taken as an important criterion in Entomology. Being poikilothermic in nature insects are greatly affected by changing temperature.

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  • A study was carried out to assess the impact of shelter designs on the production performance of dairy cattle in the three selected agro – climatic zones of Tamil Nadu. viz., Southern, Cauvery delta and High rainfall zones. The effect of various shelter designs on the activity of liver enzymes and stress hormones were analyzed. The serum samples were collected throughout the year i.e. in all the four seasons, viz., winter, summer, south-west monsoon and north-east monsoon.

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  • Present investigation was conducted at Dr. YS Parmar University of Horticulture and Forestry, Nauni (HP) to study the effect of changing climatic conditions on seed yield of onion (Allium cepa L.) in mid hills of Himachal Pradesh. The meteorological data (30 years) and onion seed yield data (26 years) were collected; correlation and regression analysis between various weather parameters (temperature, rainfall and relative humidity) and onion seed productivity was done for productivity trend analysis.

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