Results 1 to 10 of about 2,802,986 (296)

Phenotypic stasis with genetic divergence

open access: yesPeer Community Journal, 2023
Whether or not genetic divergence in the short-term of tens to hundreds of generations is compatible with phenotypic stasis remains a relatively unexplored problem.
Mallard, François   +5 more
doaj   +1 more source

Root surface as criterion for selection of sugar beet [PDF]

open access: yesRatarstvo i Povrtarstvo, 2011
In this study we analyzed 10 monogerm and 10 multigerm sugar beet genotypes from the collections of the Institute of Field and Vegetable Crops in Novi Sad.
Danojević Dario   +3 more
doaj   +1 more source

A surface for zero-insertion transmission multi-passband frequency selection

open access: yesZhongguo Jianchuan Yanjiu, 2020
Objectives Focusing on the shortcomings of limited band selection and poor control effectiveness of the current multi-band frequency selective surface, this paper designs a multi-passband frequency selection surface based on the transmission zero ...
TANG Xuying   +4 more
doaj   +1 more source

Tule elk selection of surface water and forage is mediated by season and drought

open access: yesCalifornia Fish and Wildlife Journal, 2022
Climate change is expected to affect arid-system ungulate populations by altering the distribution and availability of critical resources such as water and forage, particularly through more frequent and extreme droughts.
Adam S. Mohr   +2 more
doaj   +1 more source

A Study on Partitioning Freeform Surface and Tool Selection Method for 3-Axes CNC Machining [PDF]

open access: yes한국정밀공학회지, 2019
Freeform surfaces are widely used in various industries. However, they require much time to be machined because of complicated geometry. To increase machining productivity, partitioning methods for freeform surface have been proposed by several previous ...
Bui Ngoc Tuyen   +2 more
doaj   +1 more source

Detection and Classification of Bearing Surface Defects Based on Machine Vision

open access: yesApplied Sciences, 2021
Surface defects on bearings can directly affect the service life and reduce the performance of equipment. At present, the detection of bearing surface defects is mostly done manually, which is labor-intensive and results in poor stability. To improve the
Manhuai Lu, Chin-Ling Chen
doaj   +1 more source

Causality-Driven Efficient Feature Selection for Deep-Learning-Based Surface Roughness Prediction in Milling Machines

open access: yesMathematics, 2023
This paper studies the application of artificial intelligence to milling machines, focusing specifically on identifying the inputs (features) required for predicting surface roughness.
Hyeon-Uk Lee   +2 more
doaj   +1 more source

An Absorptive Frequency Selective Reflector With Wide Reflection Band

open access: yesIEEE Access, 2020
In this paper, an absorptive frequency selective Reflector (AFSR) with wide reflection band is proposed. The structure is divided into two layers: a resistive sheet at the top layer, and PEC at the bottom layer, divided by polymethacrylimide (PMI) foam ...
Tiantian Guo   +4 more
doaj   +1 more source

Diversity and Selection of Surface Marine Microbiomes in the Atlantic-Influenced Arctic

open access: yesFrontiers in Microbiology, 2022
Arctic marine environments are experiencing rapid changes due to the polar amplification of global warming. These changes impact the habitat of the cold-adapted microbial communities, which underpin biogeochemical cycles and marine food webs.
Nerea J. Aalto   +7 more
doaj   +1 more source

Surface currents and slope selection in crystal growth [PDF]

open access: yes, 2006
We face the problem to determine the slope dependent current during the epitaxial growth process of a crystal surface. This current is proportional to delta=(p+) + (p-), where (p+/-) are the probabilities for an atom landing on a terrace to attach to the
Amar   +21 more
core   +4 more sources

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