Javad Torkaman

In this study, rice husk and sodium silicate solution are used to produce particleboard. Sodium silicate is used as a bonding agent in values of 25, 20, 15, 10, 5 and zero percent (based on rice husk dry weight). To improve the mechanism of bondability one percent of Isocyanate resin was added for each five percent decrease in Sodium silicate solution. The effect of Isocyanate resin on bondability was evaluted by measuring of modulus of rupture (MOR), Internal bond (IB), thickness swelling (TS) and water absorption. Data were statistically analysed with Spss softword and comparison of the means was performed employing a Dancan test to identify which groups were significantly different. Generally the results have shown that increasing Sodium silicate replacement with Isocyanate resin improved the mechanical and physical properties of particleboard. In this study the best condition was obtained by the use of 15% Sodium silicate solution with 2% Isocyanate resin to product rice husk particleboard.

Husk

Isocyanate

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Evaluation of climate change in northern Iran during the last four centuries by using dendroclimatology

Natural Hazards (2016)

Vahid Gholami Maryam Ahmadi Jolandan Javad Torkaman

Dendroclimatology

Aridity index

10.1007/s11069-016-2667-4

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Citations (26)

Simulation of precipitation time series using tree-rings, earlywood vessel features, and artificial neural network

Theoretical and Applied Climatology (2018)

Vahid Gholami Javad Torkaman Pejman Dalir

Dendroclimatology

Tree (set theory)

10.1007/s00704-018-2702-3

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Citations (25)

ASSESSMENT OF ANTI-CHECKING IRON AND PARAFFIN TREATMENTS EFFECTS ON THE END-CHECK SIZE OF LOGS

Ramin Naghdi Firozan Amir Hosin Javad Torkaman Hosini Jaber Ghajar Ismael

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Determination of Optimum Rotation Age of Populus Deltoides Plantation in Regard to Economic Value of Carbon Sequestration

Ecology of Iranian Forests (2020)

Tooba Abedi Soleiman Mohammadi Limaei A E Bonyad Javad Torkaman

Determination of Optimum Rotation Age of Populus Deltoides Plantation in Regard to Economic Value of Carbon Sequestration

Value (mathematics)

Carbon fibers

Short rotation forestry

10.52547/ifej.8.15.22

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Dendroclimatology of Quercus castaneifolia (C.A.Mey) in Saravan forests of Guilan

DOAJ (DOAJ: Directory of Open Access Journals) (2011)

Sarkhosh Karamzadeh hasan pourbabaei Javad Torkaman

هدف این تحقیق بررسی ارتباط بین پهنای حلقه‌های رویشی درختان بلندمازو در جنگلهای سراوان گیلان با تغییرات اقلیم منطقه می‌باشد. بدین منظور با استفاده از روش مطالعه اقلیم‌شناسی درختی (Dendroclimatology) و از طریق نمونه‌برداری با مته سال‌سنج به مطالعه روابط بین این دو عامل پرداخته شد. اطلاعات آب و هوایی از ایستگاه هواشناسی رشت بدست آمد. در این بررسی پهنای حلقه‌های رویشی بلندمازو با بارندگی ماههای می (اردیبهشت) تا جولای (تیر) همبستگی مثبت و با حداکثر دمای جولای، حداقل دمای نوامبر (آبان) و نیز با متوسط دمای جولای و متوسط دمای نوامبر همبستگی منفی نشان داد.

Dendroclimatology

10.22092/ijfpr.2011.107598

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Javad Torkaman

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H-Index

i-10 index

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H-Index

i-10 index