Seven categories of corpora lutea i.e. small ( 1-5 days), medium (6-10 days), large (1115 days), regressing (16-21days) and of previous cycle, penultimate cycle and pregnancy (<30 days) of goat (Capra hircus) were analyzed for cellular polymorphism, dynamics and ultrastructural variations. Histologically, corpus luteum was comprised of two types of steroidogenic cells. The diameter of granulosa...

to detection of suitable sampling method to study tree canopy cover in the northern zagros forest, baneeh region forest, kurdistan province, and west of iran was selected. 40 square sample plots one hectare (100×100 m) were selected and perfect inventoried. in every sample plot the position of tree, kind of species and two diameter of crown (m) were recorded. to study of canopy cover different ...

Diameter at breast height (DBH) is the main metric for standing tree growth measurements. Developing fast and efficient measurement devices measuring DBH of great values in forest resource surveys. In this paper, we propose a new diameter instrument developed using self-reset displacement sensor, which equipped with Personal Computer (PC) terminal to enable measurement, transmission, storage, a...

Size structure and spatial arrangement of 13 abundant tree species were determined in a riparian forest fragment in Paraná State, South Brazil (23°16'S and 51°01'W). The studied species were Aspidosperma polyneuron Müll. Arg., Astronium graveolens Jacq. and Gallesia integrifolia (Spreng) Harms (emergent species); Alseis floribunda Schott, Ruprechtia laxiflora Meisn. and Bougainvillea spectabili...

The vapor-liquid-solid (VLS) process is a fundamental mechanism for the growth of nanowires, in which a small size (5-100 nm in diameter), high melting point metal (such as gold and iron) catalyst particle directs the nanowire's growth direction and defines the diameter of the crystalline nanowire. In this article, we show that the large size (5-50 microm in diameter), low melting point gallium...