Results 31 to 40 of about 61,754 (316)

Molecular Spiders with Memory [PDF]

open access: yesPhysical Review E 76, 021121 (2007), 2007
Synthetic bio-molecular spiders with "legs" made of single-stranded segments of DNA can move on a surface which is also covered by single-stranded segments of DNA complementary to the leg DNA. In experimental realizations, when a leg detaches from a segment of the surface for the first time it alters that segment, and legs subsequently bound to these ...
arxiv   +1 more source

Cover crops affect soybean yield components, but not grain quality

open access: yesAgronomy Journal, Volume 114, Issue 6, Page 3193-3205, November/December 2022., 2022
Abstract Cover cropping is mainly used to prevent soil erosion, but the effects of individual cover crops on the subsequent soybean [Glycine max (L.) Merr.] are hardly known. Therefore, two annual field trials with 15 cover crop species and bare fallow as control were conducted in semi‐arid East Austria in 2016 and 2017.
Pia Euteneuer   +6 more
wiley   +1 more source

An Inductive Approach to Strongly Antimagic Labelings of Graphs [PDF]

open access: yesarXiv, 2022
An antimagic labeling for a graph $G$ with $m$ edges is a bijection $f: E(G) \to \{1, 2, \dots, m\}$ so that $\phi_f(u) \neq \phi_f(v)$ holds for any pair of distinct vertices $u, v \in V(G)$, where $\phi_f(x) = \sum_{x \in e} f(e)$. A strongly antimagic labeling is an antimagic labeling with an additional condition: For any $u, v \in V(G)$, if $\deg(u)
arxiv  

Sparse Image Reconstruction for the SPIDER Optical Interferometric Telescope [PDF]

open access: yesProceedings of the 9th International Conference on Photonics, Optics and Laser Technology, February 11-13, 2021, 2019
The concept of a recently proposed small-scale interferometric optical imaging device, an instrument known as the Segmented Planar Imaging Detector for Electro-optical Reconnaissance (SPIDER), is of great interest for its possible applications in astronomy and space science.
arxiv   +1 more source

A BALLOON SPIDER [PDF]

open access: yesThe Canadian Entomologist, 1873
“The American Naturalist” for May, 1871, contains an interesting article on “Flying Spiders,” by J. H. Emerton. The species noticed by him are, no doubt, allied to the gossamer of Europe, and the phenomenon occurs early in autumn on the Islands of the St.
openaire   +2 more sources

ON FAMILIES OF SPIDERS [PDF]

open access: yesAnnals of the New York Academy of Sciences, 1920
n ...
openaire   +2 more sources

Rice Stubble Provides Overwintering Microhabitats for Spiders in Winter-Fallowed Rice Fields

open access: yesAgriculture
Spiders are among the predominant predatory arthropods in rice field ecosystems. Although the potential of spiders for controlling pests during the growth stages of rice is well known, few studies have focused on the overwintering habits of spiders after
Jie Sun   +5 more
doaj   +1 more source

Species composition and relative seasonal abundance of spiders from the field and tree layers of the Roodeplaat Dam Nature Reserve

open access: yesKoedoe: African Protected Area Conservation and Science, 1989
A survey of spiders was carried out at the Roodeplaat Dam Nature Reserve near Pretoria. Over a 4-year period 10 270 spiders were collected from grasses, herbs and trees. A total of 82 genera of spiders representing 27 families were recorded.
Anna S. Dippenaar-Schoeman   +2 more
doaj   +1 more source

Coacervates Composed of Low‐Molecular‐Weight Compounds– Molecular Design, Stimuli Responsiveness, Confined Reaction

open access: yesAdvanced Biology, EarlyView.
Coacervation driven by liquid‐liquid phase separation (LLPS) of biopolymers has garnered increasing attention in biology since this leads to the formation of membraneless organelles capable of performing essential yet largely unknown functions. This review highlights recent advances in coacervates (artificial condensates) composed of low‐molecular ...
Sayuri L. Higashi, Masato Ikeda
wiley   +1 more source

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