Minimizing air, water, and soil pollution are very important for a sustainable environment. Particularly, ensuring the continuity of fertility without deteriorating structure is important. This objective can be achieved only by determining physical, biological, chemical properties atmospheric deposition taking required measures in agricultural lands. Trees plants reflect quality especially they...

El objetivo de nuestra investigación es identificar los componentes químicos y evaluar in vitro, la actividad antibacteriana extractos las hojas Cupressus sempervirens L. arizonica del norte Argelia contra Pseudomonas aeruginosa ATCC 9027. La extracción se realizó macerando en disolventes polaridad creciente (cloroformo, éter petróleo metanol acuoso). Se un cribado compuestos fenólicos para una...

Abnormal' cones found irt Cupressus sempervirens include bisexual cones and double female and male cones. They are very infrequent, but there are individual trees ~th a tendency· to produce· ~\Jch cones. We, suggest that these cones reflect changes in normal hohnonal balance. keY, words: Cupressus sempervirens, bisexilal con~s, cones.

One of the main challenges using unmanned aerial vehicles (UAVs) in forest data acquisition is implementation Ground Control Points (GCPs) as a mandatory step, which sometimes impossible for inaccessible areas or within canopy closures. This study aimed to test accuracy UAV-mounted GNSS RTK (real-time kinematic) system calculating tree height and crown without any GCPs. The was conducted on Cup...

Predicting paper properties based on a limited number of measured variables can be an important tool for the industry. Mathematical models were developed to predict mechanical and optical properties from the corresponding paper density for some softwood papers using support vector machine regression with the Radial Basis Function Kernel. A dataset of different properties of paper handsheets pro...

The widely distributed Pinus subsection Ponderosae is a species complex that has a transition zone among taxa in the southwestern United States. In southern Arizona and New Mexico at least two recognized taxa, Pinus ponderosa var. scopulorum and Pinus arizonica or P. ponderosa var. arizonica, are known to coexist in close proximity. In this study, we report the existence of populations where th...

BACKGROUND Respiratory allergy to the pollen of Cupressaceae is becoming more and more common every year in the Mediterranean area. OBJECTIVE The purpose of this study was to see whether the allergenic potency of Cupressus arizonica pollen diminished after a 6-year period (1994-2000). MATERIALS AND METHODS Among the Cupressaceae, we selected the pollen of C arizonica. The mode of sampling i...