The properties of natural tannin-furfural resin applied to Poplar wood modification [PDF]
, 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
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The impact of reforestation with broad-leaved and coniferous species on soil properties and carbon storage (Case study: Kolet Forest) [PDF]
, 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
Evaluation of Soil Health in the Unstable Ecosystem of Gorgan City [PDF]
, 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
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Evaluation of Random Forest-Genetic Algorithm Hybrid Model in Estimating Daily Solar Radiation [PDF]
, 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
بررسی اثر ارتفاع منطقه بر ذخیرهسازی کربن آلی و برخی دیگر از ویژگیهای خاک در جنگلهای ارسباران [PDF]
مدیریت خاک و تولید پایدار, 2022 سابقه و هدف: بررسی ویژگیهای خاک یکی از راههای ارزیابی و مدیریت اکوسیستمهای جنگلی است. ارتفاع منطقه یکی از عوامل مؤثر بر ویژگیهای کیفی خاک بویژه محتوای کربن آلی آن محسوب میشود.
الهام جزدایمی +2 more
doaj +1 more source
A Model for Customer Churn Management of an Internet Service Provider [PDF]
, 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
شاخصهای هندسی و تنوع گونهای زادآوری در روشنههای طبیعی و انسانساخت پوشش تاجی [PDF]
پژوهش های علوم و فناوری چوب و جنگل, 2021 سابقه و هدف: روشنههای پوشش تاجی یکی از مناسبترین شرایط برای زادآوری بسیاری از گونهها محسوب میشوند. مطالعه نحوه زادآوری در روشنههای طبیعی و انسانساخت اطلاعات کاربردی را برای افزایش کمی و کیفی زادآوری انواع گونههای درختی فراهم میکند.
شمیم امینی +3 more
doaj +1 more source
Ranger Theory about National or Agricultural Lands, Criteria and Responsibilities [PDF]
, 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
Jurisprudential Study of Wasteland Detection Operations [PDF]
, 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
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A novel approach based on CatBoost and explainable artificial intelligence for diagnosis of COVID-19 cases using patients' symptoms [PDF]
, 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