Results 121 to 130 of about 3,161,795 (320)

The aging sperm: Is the male reproductive capacity ticking to biological extinction?

Journal of Basic and Clinical Reproductive Sciences, 2014
In other to provide some insight into the issue of male fertility with aging, several experimental, clinical and cross‑sectional epidemiological studies have been undertaken to characterize the relationship between paternal ages as a marker of the semen quality and male fertility status.
Pallav Sengupta, Uchenna I Nwagha
openaire   +3 more sources

Ag‐Cu Nanoarchitecture for Enhanced LSPR Absorption: the Role of Surface Roughness and near‐field Interactions

Advanced Materials Interfaces, EarlyView.
This study investigates the plasmonic properties and biosensing capabilities of a nanocomposite incorporating Cu and Ag nanoparticles for detecting anti‐DbpA antibodies associated with Lyme disease. The enhanced LSPR response is explained through FDTD simulations of Cu–Ag near‐field interactions and increased surface roughness.
Sanjay Kumar, Pavel Curda, Hana Maskova, Lenka Doudová, Pavel Pleskunov, Anna Kuzminova, Libor Hejduk, Jan Sterba, Ondřej Kylián, Ryan O. M. Rego, Vitezslav Stranak   +10 more
wiley   +1 more source

Titanium Oxysulfate‐Derived 1D Lepidocrocite Titanate Nanostructures

Advanced Materials Interfaces, EarlyView.
A novel synthesis protocol is presented for creating high‐quality titania nanofilaments. This method transcends the limitations of traditional techniques, leveraging a solution precipitation process fine‐tuned for lower temperatures and minimal reagent use. The result?
Sukanya Maity, Mohamed Ibrahim, Hussein Badr, Treesa Reji, Mary Q. Hassig, Tongjie Zhang, Christopher Li, Johanna Rosén, Michel W. Barsoum   +8 more
wiley   +1 more source

The use and misuse of herbarium specimens in evaluating plant extinction risks

Philosophical Transactions of the Royal Society of London. Biological Sciences, 2018
Herbarium specimens provide verifiable and citable evidence of the occurrence of particular plants at particular points in space and time, and are vital resources for assessing extinction risk in the tropics, where plant diversity and threats to plants ...
E. N. Nic Lughadha, B. Walker, C. Canteiro, H. Chadburn, A. Davis, S. Hargreaves, E. Lucas, A. Schuiteman, E. Williams, S. Bachman, D. Baines, A. Barker, Andrew P. Budden, J. Carretero, J. J. Clarkson, A. Roberts, M. Rivers   +16 more
semanticscholar   +1 more source

DCC, a potential target for controlling fear memory extinction and hippocampal LTP in male mice receiving single prolonged stress

Neurobiology of Stress
Post-traumatic stress disorder (PTSD) is a severe stress-dependent psychiatric disorder characterized by impairment of fear memory extinction; however, biological markers to determine impaired fear memory extinction in PTSD remain unclear.
Shaojie Yang, Jiamin Hu, Yuzhuang Chen, Zhengrong Zhang, Jingji Wang, Guoqi Zhu   +5 more
doaj  

Efek Perlindungan Mangsa dan Daya Dukung Variabel pada Sistem Mangsa-Pemangsa dengan Fungsi Respon Beddington-DeAngelis

Jambura Journal of Mathematics
Several species in the world have experienced extinction. To save species from extinction, a system needs to be formulated, one of which is protecting prey.
Aisyiah Kholifatul Hanifah, Abadi Abadi
doaj   +1 more source

Life Extinction Due To Neutron Star Mergers [PDF]

arXiv, 1996
Cosmic ray bursts (CRBs) from mergers or accretion induced collapse of neutron stars that hit an Earth-like planet closer than $\sim 1 kpc$ from the explosion produce lethal fluxes of atmospheric muons at ground level, underground and underwater. These CRBs also destroy the ozone layer and radioactivate the environment.
arxiv  

Ultra‐Flexible µ‐ECoG Arrays Based on PEDOT:PSS Micropillars

Advanced Materials Interfaces, EarlyView.
This work demonstrates an efficient procedure for fabricating ultra‐flexible neural interfaces endowed with micropatterned microelectrodes to increase surface area and characterized by extremely low impedance values to enable high‐quality recordings. The home‐built device has been shown to record somatosensory evoked potentials in vivo with exceptional
Alice Lunghi, Michele Bianchi, Pierpaolo Greco, Riccardo Viaro, Michele Di Lauro, Luciano Fadiga, Fabio Biscarini   +6 more
wiley   +1 more source

Progress in Surface Plasmon and Other Resonance Biosensors for Biomedical Applications

Advanced Materials Technologies, EarlyView.
This is the shortened version: Recent advancements in surface plasmon resonance and other optical resonance biosensors for biomedical applications are presented. Advanced sensing strategies are examined for the detection of diverse analytes, integration of nanomaterials and machine learning, and emerging nonplasmonic modes like guided mode resonance ...
Faten Bashar Kamal Eddin, Houxin Fan, Zhenchao Liu, Paolo Donati, Youssef Amin, Yap Wing Fen, Junbo Liang, Pier Paolo Pompa, Sailing He   +8 more
wiley   +1 more source

UV-B–induced forest sterility: Implications of ozone shield failure in Earth’s largest extinction

Science Advances, 2018
UV-B regimes modeled for Earth’s largest mass extinction sterilize living conifers. Although Siberian Trap volcanism is considered a primary driver of the largest extinction in Earth history, the end-Permian crisis, the relationship between these events ...
Jeffrey P. Benca, I. Duijnstee, C. Looy
semanticscholar   +1 more source