Results 1 to 10 of about 663 (53)

The properties of natural tannin-furfural resin applied to Poplar wood modification [PDF]

open access: yes, 2022
Background and Objectives: Tannin is a natural polymer that has recently been proposed for wood protection, but the structure of this polymer is not water resistant and can be easily hydrolyzed or leached out from the wood.
Ahmadi, Peyman   +5 more
core   +1 more source

Evaluation of Soil Health in the Unstable Ecosystem of Gorgan City [PDF]

open access: yes, 2022
The aim of this study was to assess the effect of land use change on health and soil quality of sloping lands in the south of Gorgan. Sampling was performed in July 2019 from only 2 shoulder slope and back slope positions and completely randomly from a ...
Abolfazl Bameri
core   +1 more source

Evaluation of Random Forest-Genetic Algorithm Hybrid Model in Estimating Daily Solar Radiation [PDF]

open access: yes, 2022
Solar energy is the most important source of renewable energy, in other words, the main source of energy on Earth. Therefore, estimating the solar radiation parameter with high accuracy is very important.
Ali Ashraf Sadraddini   +2 more
core   +1 more source

A Model for Customer Churn Management of an Internet Service Provider [PDF]

open access: yes, 2022
Customer churning is one of the most important issues facing Internet Service Providers in a competitive and rapidly saturating market. Due to the high costs associated with attracting new customers, ISPs have turned to a customer retention approach that
Alireza Hassanzadeh   +2 more
core   +1 more source

The impact of reforestation with broad-leaved and coniferous species on soil properties and carbon storage (Case study: Kolet Forest) [PDF]

open access: yes, 2023
Introduction: Soil is the largest source of carbon in the biosphere and more than half of its carbon is stored in forest ecosystems. Considering the importance of the soil carbon, the purpose of this research is to investigate how different species of ...
Hamed Asadi   +2 more
core   +1 more source

Jurisprudential Study of Wasteland Detection Operations [PDF]

open access: yes, 2023
The importance of jurisprudential review of the legitimacy of wasteland detection operations, according to Article 1 of the Executive By-Law of Wastelands Identification Reference Law, and revoking its documents is due to the nature of Anfal (public ...
Aliakbar Izadifard   +2 more
core   +1 more source

A novel approach based on CatBoost and explainable artificial intelligence for diagnosis of COVID-19 cases using patients' symptoms [PDF]

open access: yes, 2023
The COVID-19 virus, which was discovered in December 2019 in the city of Wuhan, China and quickly spread throughout the world, continues to be an important threat to the health of the world.
Ali SeyyedMomeni   +2 more
core   +1 more source

A Data-driven Model for Predicting the Yield of Recoverable Sugar from Sugarcane [PDF]

open access: yes, 2022
IntroductionSugarcane is a strategic agricultural product and increasing productivity and self-sufficiency in its production is of special importance. The most important product of sugarcane is sugar.
D. M. Imani   +2 more
core   +1 more source

Ranger Theory about National or Agricultural Lands, Criteria and Responsibilities [PDF]

open access: yes, 2023
Natural resources such as land and mountains and seas are one of the God-given riches of societies protect and utilize it is one of the major tasks of governments.
abouzar Taleghan Ghafari   +3 more
core   +1 more source

Carbon Stock and Some Chemical Properties of Soil in Sacred Groves and Pollarded Forest Stands of Northern Zagros Forests [PDF]

open access: yes, 2022
IntroductionA large part of forest and woodland ecosystems in Iran have been located in arid and semi-arid areas which low level of soil organic carbon (SOC) is considered as one of the main problems.
Kyumars Mohammadi Samani   +2 more
core   +1 more source

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