نتایج جستجو برای: black stem

تعداد نتایج: 416896  

2009
Jacob H. Dyer

We examined forest structure, tree recruitment, and spatial pattern over a 130-year period on cinder soils in northern Arizona. Data were collected from a 3.24 ha permanent, stem-mapped plot established in 1909. This site is unique in that it represents ponderosa pine (Pinus ponderosa Laws. var. scopulorum Engelm.) growing on black cinder soils, which are of limited extent in the Southwest. Tre...

Journal: :Tree physiology 2016
Nadine K Ruehr Andreas Gast Christina Weber Baerbel Daub Almut Arneth

Heat waves that trigger severe droughts are predicted to increase globally; however, we lack an understanding of how trees respond to the combined change of extreme temperatures and water availability. Here, we studied the impacts of two consecutive heat waves as well as post-stress recovery in young Pseudotsuga menziesii (Mirb.) Franco (Douglas-fir) and Robinia pseudoacacia L. (black locust) g...

2008
R. Surman

We consider hot accretion disk outflows from black hole neutron star mergers in the context of the nucleosynthesis they produce. We begin with a three dimensional numerical model of a black hole neutron star merger and calculate the neutrino and antineutrino fluxes emitted from the resulting accretion disk. We then follow the element synthesis in material outflowing the disk along parameterized...

Journal: : 2022

This study was aimed to evaluate the effect of cultivars, mulching, foliar application licorice root extract, on broccoli leaves (Brassica oleracea var. italica). The findings demonstrated that both cultivars Wisdom and Agassi have significant differences in terms vegetative growth characters, All studied traits were significantly increased by wisdom cultivar during seasons. It also observed pl...

Fathi F Hakhamaneshi MS Jalili A Kurd S, Zare S Zarei MA

Background: For several years, mammalian cloning by splitting an early embryo or nuclear transfer into oocytes method has been successfully performed. Cloning is now also possible using adult somatic cells. Although it has now been 15 years since the first cloned mammals were generated from somatic cells using nuclear transfer (NT), the success rate for producing live offspring by cloning is lo...

M. Ahmad, M. Junayed , M.D. Hossain, S. Morshed,

Background: Black pepper (Piper nigrum) is mainly cultivated in tropical areas such as South India. It is known as a popular spice in all over the world. Although some studies have been carried out to determine the ingredients of black pepper Essential Oil (EO) cultivated in various regions of the world, but there is little data about some physicochemical characteristics of EO of black pepper c...

Journal: :International Journal of STEM Education 2023

Abstract Background Integrated science, technology, engineering, and mathematics (STEM) education initiatives are becoming an increasingly popular approach to narrow the opportunity gap among underrepresented minority (i.e., Black, Hispanic, first-generation) students. However, there limited studies on impact of exposure integrated STEM academic achievement even lesser amount performance (URM) ...

M.M. Mia, M.M. Rahman N. Bhowmik, S. Islam

The present study was conducted with a view to know the productive and reproductive performance of Jamunapari, Black Bengal and crossbred goats in Chittagong district during the period of May to December 2012. The data on productive and reproductive traits were collected from 324 goats as a whole. In the present study, the birth weight of Jamunapari goats was higher than other crosses. The adul...

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