نتایج جستجو برای: crop and pan coefficients

تعداد نتایج: 16850259  

2013

Greenhouse is a building, which provides controlled climate conditions to the plants to keep them from external hard conditions. Greenhouse technology gives freedom to the farmer to select any crop type in any time during year. The quality and productivity of plants inside greenhouse is highly dependent on the management quality and a good management scheme is defined by the quality of the info...

Journal: :Water 2021

Evapotranspiration is often expressed in terms of reference crop evapotranspiration (ETo), actual (ETa), or surface water evaporation (Esw), and their reliable predictions are critical for groundwater, irrigation, aquatic ecosystem management semi-arid regions. We demonstrated that a newly developed probabilistic machine learning (ML) model, using hybridized “boosting” framework, can simultaneo...

Journal: :The Journal of animal ecology 2009
Kevin B Potts Colin A Chapman Jeremiah S Lwanga

1. Despite a long history of research on the influence of fruit availability on the population density of large-bodied vertebrate frugivores, operational understanding of the factors regulating density in these taxa remains elusive. We propose that fruit resources can be distinguished from one another on the basis of their functional role for the animals in question, and that such a classificat...

B. Rajaei M. Asghari, V. Zargar

Polyacrylonitril (PAN)-supported chitosan (CS) nanocomposite membranes were prepared by cross-linking the CS with 3-aminopropyl-triethoxysilane (APTEOS) via sol-gel method. Pervaporative performances of the CS-SiO2/PAN membrane for dehydration of aqueous alcohol solutions were investigated. From SEM cross-sectional images of the membrane, the spongy pores and the finger-like pores we...

2004
Bruno Aiazzi Luciano Alparone Stefano Baronti Andrea Garzelli Filippo Nencini Massimo Selva

This paper deals with multi-spectral (MS) and panchromatic (Pan) image fusion based on redundant multiresolution analysis (MRA). Lower-resolution MS bands are sharpened by injecting high-pass details taken from the higher-resolution Pan image. Crucial point is modelling the relationships between detail coefficients of a generic MS band and the Pan image at the same resolution. Once calculated a...

ESLAMI FARSANI R., , SEDGHI A., , SHOKOUH FAR A., ,

Carbon fibers are fabricated from different materials such as special polyacrylonitrile (PAN) fibers, cellulose fibers and pitch. But PAN fibers are recognized as the most widely used precursor for the present-day manufacture of carbon fibers. The process of fabrication carbon fibers from special PAN fibers is composed of two steps including oxidative stabilization at low temperature and carbon...

2014
Matthew R. McLennan Kimberley J. Hockings

The ability of wild animals to respond flexibly to anthropogenic environmental changes, including agriculture, is critical to survival in human-impacted habitats. Understanding use of human foods by wildlife can shed light on the acquisition of novel feeding habits and how animals respond to human-driven land-use changes. Little attention has focused on within-species variation in use of human ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده نساجی 1389

یکی از پتانسیل های موجود در زمینه ی تولید و کاربرد الیاف الکتروریسی شده، تهیه نخ از نانوالیاف می باشدکه می توان از آنها بعنوان مواد پیشرفته در موارد مختلفی از قبیل منسوجات پزشکی و فیلتراسیون استفاده نمود. از پلیمرهای مختلفی می توان جهت تولید نخ نانوالیاف استفاده کرد. عمده تحقیقات پیشین بر روی پلیمر پلی اکریلو نیتریل بوده است، که بدون در نظر گرفتن عملیات تثبیت حرارتی از خصوصیات مکانیکی پایینی بر...

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