Results 151 to 160 of about 3,161,795 (320)

Comments on Biological Effects of Stellar Collapse Neutrinos [PDF]

open access: yesarXiv, 1996
Extraterrestrial processes like neutrinos from collapsing stars, cosmic rays from supernovae and cosmic rays from neutron star mergers etc. have recently been proposed as models to explain the periodic mass extinctions such as that which wiped out the dinosaurs at the K-T boundary.
arxiv  

The Conservation Status of the World’s Reptiles [PDF]

open access: yes, 2013
Effective and targeted conservation action requires detailed information about species, their distribution, systematics and ecology as well as the distribution of threat processes which affect them.
Gamble, Tony
core   +1 more source

Proteomics‐Empowered Microfluidic‐SERS Immunoassay for Identifying and Detecting Biomarkers of Micropapillary Lung Adenocarcinoma

open access: yesAdvanced Science, EarlyView.
The presence of a micropapillary (MPP) component is critical for lung adenocarcinoma (LUAD) surgery, yet reliable blood biomarkers remain lacking. This study integrates proteomics for biomarker identification, a nanomixing‐enhanced surface‐enhanced Raman spectroscopy (SERS) platform for sensitive detection, and machine learning for accurate ...
Dechun Zhang   +4 more
wiley   +1 more source

Flexible Regulation of Optical Properties Based on Structure Size‐Driven Intermolecular Interactions for Phototherapy

open access: yesAdvanced Science, EarlyView.
Herein, ACQ@AIE bimolecular systems are developed by noncovalently combining an aggregated‐caused quenching (ACQ) molecule with three aggregated‐induced emission (AIE) molecules. Differentials in structural size drive different patterns of intermolecular interactions, leading to distinct and tunable optical properties.
Zhichao Gong   +8 more
wiley   +1 more source

The economic implications of a multiple species approach to bioeconomic modelling : a thesis presented in partial fulfilment of the requirements for the degree of Master of Applied Economics at Massey University, Palmerston North, New Zealand [PDF]

open access: yes, 2002
Human activity frequently leads to the endangerment or extinction of other species. While ecologists study the biological facets of species loss, economics, as the science of understanding people's behaviour, has been charged with investigating the ...
Fleming, Christopher Mark
core  

Mixed‐Dimensional Floating Gate Phototransistors for Mixed‐Modal In‐Sensor Reservoir Computing

open access: yesAdvanced Science, EarlyView.
Designing bio‐inspired multisensory neuromorphic devices holds significant importance for low‐power and high‐efficiency computing. Here, the authors introduce a floating‐gate phototransistor based on the mixed‐dimensional heterostructure of 0D‐CsPbBr3 QDs and 2D‐MoS2 few layers.
Weilun Ouyang   +9 more
wiley   +1 more source

Pavlovian conditioning demonstrated with neuromorphic memristive devices

open access: yesScientific Reports, 2017
Pavlovian conditioning, a classical case of associative learning in a biological brain, is demonstrated using the Ni/Nb-SrTiO3/Ti memristive device with intrinsic forgetting properties in the framework of the asymmetric spike-timing-dependent plasticity ...
Zheng-Hua Tan   +5 more
doaj   +1 more source

Super‐Heterostructures of Twisted Pd Nanoarrays Epitaxially Grown on Chiral Au Nanorods Boost Circularly Polarized Photocatalysis

open access: yesAdvanced Science, EarlyView.
Au‐Pd super‐heterostructures not only retard the damping of chiroptical response but also enantio‐selectively enhance photocatalysis, thanks to the chiral electromagnetic field and chiral hot electrons. Abstract Seed‐mediated growth provides an efficient way to produce chiral hybrid nanocrystals, mainly benefitting from the recent successful synthesis ...
Taotao Luo   +9 more
wiley   +1 more source

Biological Impact of Ozone Depletion at the End-Permian: A modeling study [PDF]

open access: yesarXiv, 2019
The end-Permian mass extinction is the most severe known from the fossil record. The most likely cause is massive volcanic activity associated with the formation of the Permo-Triassic Siberian flood basalts. A proposed mechanism for extinction due to this volcanic activity is depletion of stratospheric ozone, leading to increased penetration of ...
arxiv  

High‐Throughput Tiling of Essential mRNAs Increases Potency of Antisense Antibiotics

open access: yesAdvanced Science, EarlyView.
The systematic tiling of essential genes’ mRNA here presented, proposes a valuable tool for the identification of novel PNA sequences with antibiotic potential. The high‐throughput synthetic set up opens the door to investigating thousands of sequences in an economic way and ultimately identifies potent antisense oligonucleotides while also giving room
Giorgia Danti   +3 more
wiley   +1 more source

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