Results 21 to 30 of about 325,035 (334)

On the general relationship between plant height and aboveground biomass of vegetation stands in contrasted ecosystems.

open access: yesPLoS ONE, 2021
Ecological communities are unique assemblages of species that coexist in consequence of multi-causal processes that have proven hard to generalize. One possible exception are processes that control the biomass packing of vegetation stands; the amount of ...
Raphaƫl Proulx
doaj   +1 more source

Packing dimension of mean porous measures [PDF]

open access: yesJournal of the London Mathematical Society, 2009
We prove that the packing dimension of any mean porous Radon measure on $\mathbb R^d$ may be estimated from above by a function which depends on mean porosity. The upper bound tends to $d-1$ as mean porosity tends to its maximum value. This result was stated in \cite{BS}, and in a weaker form in \cite{JJ1}, but the proofs are not correct.
Beliaev D.   +6 more
openaire   +6 more sources

Comparison of side-chain dispersion in protein structures determined by cryo-EM and X-ray crystallography

open access: yesIUCrJ, 2022
An evaluation of systematic differences in local structure and conformation in the interior of protein tertiary structures determined by crystallography and by cryo-electron microscopy (cryo-EM) is reported.
Ashraya Ravikumar   +3 more
doaj   +1 more source

Using ultra-short pulses to determine particle size and density distributions [PDF]

open access: yes, 2007
We analyze the time dependent response of strongly scattering media (SSM) to ultra-short pulses of light. A random walk technique is used to model the optical scattering of ultra-short pulses of light propagating through media with random shapes and ...
Boller, Klaus. -J.   +2 more
core   +3 more sources

Elasticity-based-exfoliability measure for high-throughput computational exfoliation of two-dimensional materials

open access: yesnpj Computational Materials, 2021
Two-dimensional (2D) materials are promising candidates for uses in next-generation electronic and optoelectronic devices. However, only a few high-quality 2D materials have been mechanically exfoliated to date.
Xiangzheng Jia   +7 more
doaj   +1 more source

An Effective Discrete Grey Wolf Optimization Algorithm for Solving the Packing Problem

open access: yesIEEE Access, 2020
This article proposes a novel discrete grey wolf optimization for the packing problem, called the two-dimensional strip packing (2DSP) problem without guillotine constraint.
Peng Wang, Yunqing Rao, Qiang Luo
doaj   +1 more source

Monitoring Three-Dimensional Packings in Microgravity [PDF]

open access: yes, 2013
We present results from experiments with granular packings in three dimensions in microgravity as realized on parabolic flights. Two different techniques are employed to monitor the inside of the packings during compaction: (1) X-ray radiography is used ...
Borngen, Alexander   +3 more
core   +3 more sources

USULAN PENERAPAN LEAN SIX SIGMA UNTUK MENINGKATKAN KUALITAS PRODUK SEMEN

open access: yesJ@ti Undip: Jurnal Teknik Industri, 2021
Penelitian ini dilakukan di sebuah perusahaan yang bergerak di bidang packing plant. Proses pada packing plant tersebut tentunya tidak terlepas dari permasalahan pemborosan yang menjadi kendala saat pengepakan semen berlangsung.
Teti Alawiyah, Vera Devani, Nurul Amalia
doaj   +1 more source

Recovering measures from approximate values on balls [PDF]

open access: yes, 2015
In a metric space $(X,d)$ we reconstruct an approximation of a Borel measure $\mu$ starting from a premeasure $q$ defined on the collection of closed balls, and such that $q$ approximates the values of $\mu$ on these balls.
Buet, Blanche, Leonardi, Gian Paolo
core   +2 more sources

Transseptal Suturing Reduce Patient Anxiety after Septoplasty Compared to Nasal Packing

open access: yesActa Medica, 2017
Background: We measured postoperative anxiety in patients who underwent transseptal suturing or nasal packing after septoplasty. Materials and Methods: Transseptal suturing was performed on Group 1 patients and nasal splints with airway were placed after
Kamran Sari   +4 more
doaj   +1 more source

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