Results 51 to 60 of about 588,476 (307)

Multivalent Protein Nanorings for Broad and Potent SARS‐CoV‐2 Neutralization

open access: yesAdvanced Healthcare Materials, EarlyView.
A protein‐only, modular multivalent nanoscaffold displaying 20 anchor points, decorated with two different binders (10 of each), targeting the SARS‐CoV‐2 receptor‐binding domain is presented. The construct self‐assembles into stable, biocompatible, homogeneous nanoparticles, exhibit synergistic binding with fM IC50 values. It also detects spike at 9 ng 
Molood Behbahanipour   +11 more
wiley   +1 more source

Single-cell analysis identifies conserved features of immune dysfunction in simulated microgravity and spaceflight

open access: yesNature Communications
Microgravity is associated with immunological dysfunction, though the mechanisms are poorly understood. Here, using single-cell analysis of human peripheral blood mononuclear cells (PBMCs) exposed to short term (25 hours) simulated microgravity, we ...
Fei Wu   +24 more
doaj   +1 more source

Till Jesus comes: origins of Christian apocalyptic expectation [PDF]

open access: yes, 1999
Holman, Charles. Till Jesus comes: origins of Christian apocalyptic expectation.
Buck, Erwin
core   +1 more source

Hardware-in-the-loop tuning of a feedback controller for a buck converter using a GA [PDF]

open access: yes, 2008
This paper presents a methodology for tuning a PID-based feedback controller for a buck converter using the ITAE controller performance index. The controller parameters are optimized to ensure that a reasonable transient response can be achieved whilst ...
Bingham, C. M.   +3 more
core   +1 more source

Ultra‐Durable Information‐Encoded Anti‐Counterfeiting Self‐Assembled Nanocrystal Labels

open access: yesAdvanced Optical Materials, EarlyView.
Ultra‐durable cost‐effective information‐encoded anti‐counterfeiting labels are fabricated to secure semiconductor chips. A novel method is used to self‐assemble colloidal quantum wells (CQWs) into color bars. Information can be encoded spatially, spectrally, and opto‐spatially.
Taha Haddadifam   +6 more
wiley   +1 more source

OXR1 maintains the retromer to delay brain aging under dietary restriction

open access: yesNature Communications
Dietary restriction (DR) delays aging, but the mechanism remains unclear. We identified polymorphisms in mtd, the fly homolog of OXR1, which influenced lifespan and mtd expression in response to DR.
Kenneth A. Wilson   +23 more
doaj   +1 more source

Effect of cholesterol supplementation on cryosurvival of goat spermatozoa [PDF]

open access: yesVeterinary World, 2015
Aim: Sperm membrane cholesterol influences cryodamage during cryopreservation. The present study was carried out to evaluate the effect of varying cholesterol levels in Tris based extenders on the freezability of sexually healthy Malabari buck semen ...
Sunita Behera   +3 more
doaj   +1 more source

ChicGrasp: Imitation‐Learning‐Based Customized Dual‐Jaw Gripper Control for Manipulation of Delicate, Irregular Bio‐Products

open access: yesAdvanced Robotics Research, EarlyView.
Automated poultry processing lines still rely on humans to lift slippery, easily bruised carcasses onto a shackle conveyor. Deformability, anatomical variance, and hygiene rules make conventional suction and scripted motions unreliable. We present ChicGrasp, an end‐to‐end hardware‐software co‐designed imitation learning framework, to offer a ...
Amirreza Davar   +8 more
wiley   +1 more source

Lifespan-increasing drug nordihydroguaiaretic acid inhibits p300 and activates autophagy

open access: yesnpj Aging and Mechanisms of Disease, 2019
Aging is characterized by the progressive loss of physiological function in all organisms. Remarkably, the aging process can be modulated by environmental modifications, including diet and small molecules.
Tugsan Tezil   +8 more
doaj   +1 more source

Taxonomic results of the Bryotrop expedition to Zaire and Rwanda : 24., Leskeaceae, Brachytheciaceae, Stereophyllaceae, Plagiotheciaceae, Entodontaceae, Sematophyllaceae p.pte, Hypnaceae (except Hypnum) [PDF]

open access: yes, 1993
This very distinctive and easily recognized moss has terete foliation when dry, and has leaves spreading when moist. The leaves are ovate, abruptly broad-acuminate, about 1.5-2 mm long, and strongly plicate.
Buck, William R.
core   +1 more source

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