Wind field

Ebook "Facilitating sustainable innovation through collaboration: A multi-stakeholder perspective" takes an unusually international perspective of sustainable innovation with contributions from Australia, Europe, and North America. Prominent policy makers, scientific researchers and practitioners in this field provide various inputs and analyses relating to the development of sustainable innovations.

281p giangdongdinh 28-05-2024 1 1   Download

he study uses Best Track Data in the Western North Pacific region from 1961 to 2020. The wind speed fields of all TCs over the coastal zones are calculated using a semi-empirical model with a square grid of 0.05° resolution. The results show that the frequencies of TCs over the coastal zones decrease during El Niño years, whilethe TC intensities increase significantly compared to those in Neutral years. Meanwhile, TC intensities over all coastal zones during La Niña years, and some coastal zones during El Niño years, decrease significantly compared to those in Neutral years.

15p dianmotminh02 03-05-2024 1 1   Download

Part 1 book "Transformer design principles" includes content: Introduction; magnetism and related core issues; circuit model of a 2-winding transformer with core; reactance and leakage reactance calculations, phasors, 3-phase connections and symmetrical components; fault current analysis; phase shifting and zigzag transformers; multiterminal 3-phase transformer model; Rabins’ method for calculating leakage fields, inductances and forces in iron core transformers, including air core methods; mechanical design.

299p dianmotminh00 22-04-2024 5 3   Download

This paper proposes a calculation method to estimate surge impedance of blade and tower of the wind turbine through computing the equivalent capacitance. The blade and tower capacitance are determined by simulating the electric field energy on the wind turbine.

4p vistephenhawking 26-04-2022 19 2   Download

On the basis of the data source of the 10 m wind field above the sea with the hourly frequency and during the period of 41 years (1979–2019) by the NCEP CFRS, we used the probability distribution functions to study the distribution law of wind speed in the waters of Ly Son island.

11p inception36 30-11-2021 14 2   Download

On the basis of the data source of the 10 m wind field above the sea with the hourly frequency and during the period of 41 years (1979–2019) by the NCEP CFRS, we used the probability distribution functions to study the distribution law of wind speed in the waters of Ly Son island. Specifically, four distribution functions (normal distribution, gamma distribution, Weibull distribution and extreme value distribution) were used to estimate the characteristic parameters of the shape and proportion of the wind distribution in the waters of Ly Son island.

10p inception36 30-11-2021 15 1   Download

Temperature and wind on the sea surface are factors affecting the development of coral reefs in the seawaters. The research results show that the warming of sea water under the condition of weak wind field is considered a major threat to the bleaching of coral reefs in the sea areas of the Ninh Thuan - Binh Thuan provinces.

10p inception36 30-11-2021 13 1   Download

Typhoon-induced disasters including storm surge and high wave are obvious threats to coastal areas in Vietnam. Thus, many researchers have paid their attention to this issue. The approaching methods are varied, including statistical methods and also numerical methods. This study suggests the coupled models Delft3D-FLOW and WAVE, using the meteorological output data from the Weather Research Forecast (WRF) for investigating the typhoon induced disasters in the coastal areas in Viet Nam.

18p nguaconbaynhay12 13-06-2021 9 1   Download

The incidence and severity of Alternaria blight in rapeseed-mustard fields is greatly influenced by temperature, relative humidity, soil condition at the time of planting, splashing rain, wind velocity, leaf wetness and inoculum density available in the soil (Meena et al., 2004).

6p trinhthamhodang11 27-04-2021 11 1   Download

The crop is attacked by a number of diseases such as Alternaria leaf blight, Cercospora leaf spot, powdery mildew, downy mildew and anthracnose, amongst which Alternaria leaf blight caused by Alternaria cucumerina is found to cause serious losses throughout Rajasthan and other states. The incidence and severity of Alternaria blight in bottle gourd fields is greatly influenced by temperature, relative humidity, soil condition at the time of planting, splashing rain, wind velocity, leaf wetness and inoculum density available in the soil (Meena et al., 2004).

5p trinhthamhodang11 27-04-2021 18 1   Download

The present study was carried out to investigate the influence of moisture on surface energy balance component (LE) and canopy temperature (CT) over potato field during 2014-15 and 2015-16 growing season .With the help of micromet tower observation were taken hourly basis on temperature, net radiation, and wind speed at seven days interval, covering different growth stages. Simultaneously the data on canopy temperature and soil moisture were also recorded.

8p gaocaolon9 22-12-2020 14 2   Download

The process of evaporation is influenced by a number of factors, the most common and important meteorological parameters affecting evaporation are solar radiation, temperature, relative humidity, wind speed and atmospheric pressure. There are number of models for the estimation of evaporation developed by investigators in different fields of study. The interrelated factors are incorporated into various formulae for estimating evaporation. Due to complex interactions between the components of the land-plantatmospheric systems the reliable estimation of evaporation are extremely difficult.

14p caygaocaolon8 07-11-2020 11 1   Download

Testing of agricultural sprinklers is necessary to find the optimum field operating conditions with minimum cost while satisfying design water distribution criteria. In the present study two twin-nozzle agricultural sprinklers were tested in field under ten different operating pressures ranging from 1.6 kg/cm² to 3.5 kg/cm². In each experiment sprinkler discharge rate, nozzle pressure, radius of throw, and water distribution pattern around the sprinkler were observed. The average discharge coefficients of the two sprinkler nozzles were determined.

12p angicungduoc6 22-07-2020 10 3   Download

The main objective of this review is to show the reader the importance of the proper choice of an aero profile and its influence for the calculation during the design of rotor blades and the performance of hydrokinetic turbines.

12p lucastanguyen 01-06-2020 12 1   Download

This paper proposes a control strategy of open winding permanent magnet synchronous motor (OW PMSM) in field weakening modes. There are two inverters. One of them connected to the traction battery.

8p lucastanguyen 01-06-2020 10 2   Download

An investigation was carried out at Agrometeorological field, Central Research Farm, Odisha University of Agriculture and Technology, Bhubaneswar in rabi season, 2017 in natural condition on study of various aspects of effect of weather (maximum temperature, minimum temperature, rainfall, maximum relative humidity, minimum relative humidity, wind velocity, bright sunshine hours and evaporation) on infestation of P. grisea in rice (in the varieties Khandagiri and Lalat). In rabi season among the two varieties, Lalat variety showed the higher blast incidence (2.

8p angicungduoc5 14-06-2020 8 1   Download

In North West Plain Zone (NWPZ), where the hot, dry wind is frequent during grain filling, wheat cultivars suffer from loss of grain weight because of low grain filling rate. A field study was carried out under normal sown conditions to evaluate the phenological variation in forty wheat genotypes. Significant genotypic differences were observed for most of the traits. WH 1105, WH 1138 and HD 2967 had the highest grain yield per plant 1150.0, 1136.7 and 1103.3 g/plot respectively.

9p nguaconbaynhay5 11-05-2020 9 1   Download

Switchgrass is C4 perennial grass species that is being developed as a cellulosic bioenergy feedstock. It is wind-pollinated and considered to be an obligate outcrosser. Genetic engineering has been used to alter cell walls for more facile bioprocessing and biofuel yield.

10p vihamax2711 21-04-2020 13 0   Download

Sugarcane (Saccharum officinarum L.) is one of the world’s most important cash crop cultivated in more than 80 countries around the globe. There are several impediments which contribute to low cane yield and one of the factors is plant diseases. The crop is mostly constrained by diseases of fungal, bacterial and viral origin. Bacterial Red stripe/top rot incited by Acidovorax avenae subsp. Avenae once considered to be the minor disease is gaining importance these days. The disease mostly occurs in two forms i.e.

10p trinhthamhodang4 22-03-2020 12 0   Download

A study was conducted to assess the population dynamics of sugarcane web mite, Schizotetranchyus andropogoni Hirst during June 2017 to May 2018 in field condition at Sugarcane Research Station (SRS), Cuddalore district. The population density of sugarcane web mite, S. andropogoni of mite touched its peak (10.45 mites / 2cm2 area of leaf) during the first week of May 2018 (18th SMW) and the mite population declined during the first week of September 2017 (35th SMW) to last week of December 2017 (8.43 to 4.53 mites / 2cm2 area of leaf).

8p trinhthamhodang3 17-02-2020 30 1   Download