Results 61 to 70 of about 54,786 (297)

Self-similar dynamics of bacterial chemotaxis

, 2012
Colonies of bacteria grown on thin agar plate exhibit fractal patterns as a result of adaptation to their environments. The bacterial colony pattern formation is regulated crucially by chemotaxis, the movement of cells along a chemical concentration ...
J. Murray, Kannika Khompurngson, T. Matsuyama, Waipot Ngamsaad   +3 more
core   +1 more source

All‐in‐One Analog AI Hardware: On‐Chip Training and Inference with Conductive‐Metal‐Oxide/HfOx ReRAM Devices

Advanced Functional Materials, EarlyView.
An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone, Victoria Clerico, Wooseok Choi, Tommaso Stecconi, Folkert Horst, Laura Bégon‐Lours, Matteo Galetta, Antonio La Porta, Nikhil Garg, Fabien Alibart, Bert Jan Offrein, Valeria Bragaglia   +11 more
wiley   +1 more source

Restoration of a brown trout (Salmo trutta L.) population to Loch Enoch, an acified Loch in Galloway, South-West Scotland [PDF]

, 2000
The authors present the findings of a restoration project in Loch Enoch in Scotland. There are historical references that brown trout was present in Loch Enoch up to the 1920s but it is believed the acidity of loch triggered the disappearance of Salmo ...
Collen, Peter, Harriman, Ron, Keay, Elspeth, Morrison, B.R.S, Watt, Alan   +4 more
core  

An All‐Optical Driven Bio‐Photovoltaic Interface for Active Control of Live Cells

Advanced Functional Materials, EarlyView.
Bio‐photovoltaic Interface (BIO‐PV‐I) for live cell manipulation is presented. BIO‐PV‐I can be activated non‐invasively and remotely to control the spatial motility, adhesion, and morphology of cells adhering to it. BIO‐PV‐I uses a patterned light‐induced electric potential in iron‐doped lithium niobate crystals whose light‐driven and reversible nature,
Lisa Miccio, Martina Mugnano, Valentina Marchesano, Alejandro Calabuig, Zhe Wang, Gennaro Giordano, Francesca Borrelli, Simonetta Grilli, Pietro Ferraro   +8 more
wiley   +1 more source

Efecto de la heparina y de la concentración espermática sobre el porcentaje de fertilización de oocitos bovinos in vitro Heparin and spermatic concentration effect over the percentage of in vitro fertilization of bovine oocites

Revista Colombiana de Ciencias Pecuarias, 2005
El objetivo de este estudio fue evaluar el efecto de diferentes concentraciones de heparina y de semen en el medio de fertilización sobre el porcentaje de oocitos bovinos fertilizados in vitro.
Roger D Salgado, Clara C Rugeles, Jaime Alvarez   +2 more
doaj  

Can Microfluidics Improve Sperm Quality? A Prospective Functional Study

Biomedicines
The same sperm selection techniques in assisted reproduction clinics have remained largely unchanged despite their weaknesses. Recently, microfluidic devices have emerged as a novel methodology that facilitates the sperm selection process with promising ...
Fernando Meseguer, Carla Giménez Rodríguez, Rocío Rivera Egea, Laura Carrión Sisternas, Jose A. Remohí, Marcos Meseguer   +5 more
doaj   +1 more source

Pregnancy outcome after IUI for male and idiopathic infertility using a new simplified method for sperm preparation

Middle East Fertility Society Journal, 2012
Introduction: Intrauterine insemination (IUI) is a valid treatment for infertility with a cumulative pregnancy rate of 40–90% after 3–10 treatment cycles.
Emad M. Siam
doaj   +1 more source

Rice Center focuses on restoring wetlands [PDF]

, 2016
Halfway between Richmond and Williamsburg, where Kimages Creek flows into the James River, lies the Inger and Walter Rice Center for Environmental Life Sciences. A restoration project aims to return the area to its original state as a wetland.
Rubis, Chris
core   +1 more source

From “the dialectics of nature” to the inorganic gene [PDF]

, 1999
The concept of projection from one space to another, with a consequent loss of information, can be seen in the relationships of gene to protein and language description to real situation.
Mackay, Alan L.
core   +1 more source

Improvement in quality of cryopreserved human spermatozoa by swim‐up before freezing [PDF]

International Journal of Andrology, 1994
SummarySelecting a population of spermatozoa by the swim‐up technique yields, after freezing and thawing, a population of cells that contains proportionally more spermatozoa which are morphologically normal, fewer spermatozoa with damaged tail membranes, and a greater percentage of progressively motile spermatozoa with greater velocities and amplitudes
F, Pérez-Sánchez, T G, Cooper, C H, Yeung, E, Nieschlag   +3 more
openaire   +2 more sources