A comparison with the three-zone model for flow boiling heat transfer in small diameter tubes [PDF]
, 2006 Flow boiling heat transfer experimental results, obtained in two stainless steel tubes of internal diameter 4.26 mm and 2.01 mm using R134a as the working fluid, indicate that the local heat transfer coefficient increases with heat flux and is ...
Karayiannis, TG +2 more
core +4 more sources
Volume quantity and percentage of Beech industrial, fuel and stump timber portions at Caspian Forests of Iran [PDF]
تحقیقات جنگل و صنوبر ایران, 2005 The aim of the study was to investigate the volume and amount of the Beech (Fagus orientalis) industrial, Fuel and stump timber portions at west forests of Gilan province in Caspian Region of Iran.
Farrokh Poorshakoori Allahdeh +1 more
doaj
Frontiers in Earth ScienceChina’s calcium carbonate industry faces a critical triple challenge—structural mismatch between high-end shortages and low-end overcapacity, resource inefficiency, and environmental pressures—which calls for a systematic strategy aligning raw material ...
Shanfeng Xi +7 more
doaj +1 more source
Comparison of height, diameter and wood production of 14 Poplar clones in Esfahan province [PDF]
تحقیقات جنگل و صنوبر ایران, 2008 Poplar trees are the fastest growing trees in the northern hemisphere and it woods is suitable for a variety uses and they are the most important resource of wood production. For this reason they are best plant for wood culture.
Haydar Ali Daneshvar +1 more
doaj
Amount of carbon sequestration distribution associated with oak tree’s (Quercus castaneifolia C.A. May) bole in relation to physiographical units of Hyrcanian natural forests of Iran [PDF]
تحقیقات جنگل و صنوبر ایران, 2014 Carbon sequestration rate of forest trees and their spatial pattern are prominent factors which affect global carbon dynamic and can be basically applied to predict climate change.
Ali Asghar Vahedi, Asadollah Mattagi
doaj +1 more source
The effect of tube diameter on vertical two-phase flow regimes in small tubes [PDF]
, 2006 Flow boiling flow patterns in four circular tubes with internal diameters of 1.10, 2.01, 2.88 and 4.26 mm were investigated in the present project. The experiments were conducted in vertical upward two-phase flow using R134a as the working fluid.
Chen, L, Tian, YS, Karayiannis, TG
core +1 more source
Investigation on Adaptability and Quantitative Properties of Redwood (Sequoia sempervirens) in north of Iran, Mazandaran province. [PDF]
تحقیقات جنگل و صنوبر ایران, 2004 A 19 year old plantation (4×4m) of Redwood on an area of 0.16 ha was selected in Chamestan Experimental Station in Mazandaran Province (North Iran). Results indicate that mean of diameter at breast height ,height and volume per hectar were 31/8cm ,15/15m
Sayyed Reza Mostafanezhad +1 more
doaj
Effect of weed elimination treatments on survival, growth and important pest population of poplars in the nurseries of Safrabasteh research station, Guilan province [PDF]
تحقیقات جنگل و صنوبر ایران, 2009 Poplar is a one of the fast growing and prolific species that is used for afforestation programs. Advising agro-technical methods with attention to ecological aspects is one of the effective and important factors in integrated management of pests.
Parisa Mahammadpour +3 more
doaj
Growth and performance of bare and pot rooted seedlings of Loblolly pine (Pinus taeda L.) after plantation [PDF]
تحقیقات جنگل و صنوبر ایران, 2005 Seedling production of P. taeda in plastic bags is economically more expensive than bare-rooted method due to limited space for root development (root rotation) and its negative effects on subsequent seedlings growth and performance at field.
Taymour Rostami Shahraji, Amir Bonyad
doaj
Investigation on adaptability and performance of species and provenances of Eucalyptus in Markazi province (Saveh) [PDF]
تحقیقات جنگل و صنوبر ایران, 2017 The aim of the present study was selection of adaptable species with proper growth and wood production and resistant to cold with the aim of wood production and cultivation in the urban green space and infertile lands of Saveh.
Gholam Reza Goodarzi, Fatemeh Ahmadloo
doaj +1 more source