Results 91 to 100 of about 182,251 (343)
Swiss Journal of PalaeontologySeveral sites in the Americas are proposed to have evidence of human occupation before the Last Glacial Maximum (LGM). The timing of human colonisation of the Americas is a matter of debate due to its intrinsic interest, but also because of the ...
Richard A. Fariña +5 more
doaj +1 more source
Role of Histidine‐Containing Peptoids in Accelerating the Kinetics of Calcite Growth
Advanced Functional Materials, EarlyView.Amphiphilic histidine‐containing peptoids mimic carbonic anhydrase (CA) to accelerate calcite step growth. In the presence of Zn2+, they promote the deprotonation of HCO3−, the desolvation of Ca2+, and the reorganization of interfacial hydration layers, thereby reducing the activation barrier for calcite growth.
Mingyi Zhang +5 more
wiley +1 more source
New ichthyofaunal microfossils from the Late Permian at Chaotian, Sichuan, Southwest China
Swiss Journal of PalaeontologyChondrichthyan remains are reported for the first time from the Late Permian of the Sichuan Province, Southwest China. They include four tooth genera, comprising Eugeneodontiformes (aff. Agassizodus sp.
Li Jiachun +5 more
doaj +1 more source
Technology Vs Nature: Human Error in Dealing with Nature in Crichton\u27s Jurassic Park [PDF]
, 2000 Witnessing the euphoria of the era of biotechnology in the late twentieth century, Crichton exposes the theme of biotechnology in his works. In Jurassic Park, he voices his concern about the impact of the use of biotechnology to preserve nature and its ...
Prasasti, S. (Sarah) +1 more
core +1 more source
Chiral Nanohoops as an Efficient Spin Polarization System
Advanced Functional Materials, EarlyView.Chiral conjugated nanohoops with a central dibenzopentalene unit exhibit 90% spin polarization at low voltage and high conductivity. These properties make them ideal components in molecular spintronics applications. Abstract A central challenge in molecular spintronics is to achieve a high spin polarization at low operating voltages and ambient ...
Anu Gupta +4 more
wiley +1 more source
Swiss Journal of PalaeontologyAlthough trionychians have a rich fossil record, much of their fossil diversity is known from the Cretaceous and Paleogene, and little is known about their evolutionary history in the Neogene.
Yann Rollot +5 more
doaj +1 more source
Neandertal man the hunter: A history of Neandertal subsistence
, 2010 The history of Neandertals has been examined by a number of researchers who highlight how historical biases have impacted popular and scientific perceptions of Neandertals.
Ready, E.
core
Advanced Functional Materials, EarlyView.The catalytic valorization of biomass represents an essential approach for achieving sustainable chemical production, with formic acid (FA) being recognized as a valuable platform chemical for hydrogen storage and environmentally friendly synthetic applications.
Yiqi Geng +6 more
wiley +1 more source
Ibuanyidanda Neotic Propaedeutic Principle as an Afrocentric Environmental Prognosis to the Problems of Climate Change in the Twenty First Century [PDF]
, 2019 The activities of man and other beings on a daily basis have been the primordial antecedence for the negative changes experienced in the environment today. Nature in its rudimentary state was harmless and friendly to man and its inhabitants. But owing to
David, Ubong Iniobong, Nyok, Efio-Ita
core
Upcycling of Disposable Face Masks into Water‐Resistant and Flame Retardant Foams
Advanced Functional Materials, EarlyView.Disposable mask waste is upcycled into lightweight polypropylene‐based foams with tunable porosity and composite architectures reinforced by ear‐loop fibers. The sustainable solvent‐based process enables upcycling rates of 91% and solvent recovery of >90%.
Jingjing Pan +3 more
wiley +1 more source