Results 31 to 40 of about 2,454,229 (313)

Investigation on Adaptability and Quantitative Properties of Redwood (Sequoia sempervirens) in north of Iran, Mazandaran province. [PDF]

open access: yesتحقیقات 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  

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]

open access: yesتحقیقات 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 fault-diameter and wide-diameter of twisted hypercubes

open access: yesDiscrete Applied Mathematics, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hao Qi 0001, Xuding Zhu
openaire   +1 more source

Effect of weed elimination treatments on survival, growth and important pest population of poplars in the nurseries of Safrabasteh research station, Guilan province [PDF]

open access: yesتحقیقات 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  

Recent Results From the EU POF-PLUS Project: Multi-Gigabit Transmission Over 1 mm Core Diameter Plastic Optical Fibers [PDF]

open access: yes, 2011
Recent activity to achieve multi-gigabit transmission over 1 mm core diameter graded-index and step-index plastic optical fibers for distances up to 50 meters is reported in this paper.
Gaudino, R.   +41 more
core   +1 more source

Growth and performance of bare and pot rooted seedlings of Loblolly pine (Pinus taeda L.) after plantation [PDF]

open access: yesتحقیقات 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  

Bounded diameter arboricity [PDF]

open access: yesJournal of Graph Theory, 2018
AbstractWe introduce the notion of bounded diameter arboricity. Specifically, the diameter‐ arboricity of a graph is the minimum number such that the edges of the graph can be partitioned into forests each of whose components has diameter at most . A class of graphs has bounded diameter arboricity if there exists a natural number such that every ...
Martin Merker, Luke Postle
openaire   +3 more sources

Maximum tumor diameter is not an independent prognostic factor in high-risk localized prostate cancer. [PDF]

open access: yes, 2008
Contains fulltext : 69173.pdf (Publisher’s version ) (Open Access)OBJECTIVES: Previous studies suggest that maximum tumor diameter (MTD) is a predictor of recurrence in prostate cancer (PC).
C. A. Hulsbergen-vandeKaa   +13 more
core   +1 more source

Survival and growth of 10 broadleaved and needleleaved tree species in Fars Province [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2005
Importance of wood as a basic material in industry, along its broad uses and diverse by-products leads us to change our direction from exploitation of natural forests towards artificial forest plantation.
Mohammad Reza Negahdar- Saber   +2 more
doaj  

The Minimum Harmonic Index for Unicyclic Graphs with Given Diameter

open access: yesDiscussiones Mathematicae Graph Theory, 2018
The harmonic index of a graph G is defined as the sum of the weights 2d(u)+d(v)${2 \over {d(u) + d(v)}}$ of all edges uv of G, where d(u) denotes the degree of a vertex u in G.
Zhong Lingping
doaj   +1 more source

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