multiple signals
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Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Mengjiao Pei ◽  
Changjin Wan ◽  
Qiong Chang ◽  
Jianhang Guo ◽  
Sai Jiang ◽  
...  

Associative learning is a critical learning principle uniting discrete ideas and percepts to improve individuals’ adaptability. However, enabling high tunability of the association processes as in biological counterparts and thus integration of multiple signals from the environment, ideally in a single device, is challenging. Here, we fabricate an organic ferroelectric neuromem capable of monadically implementing optically modulated associative learning. This approach couples the photogating effect at the interface with ferroelectric polarization switching, enabling highly tunable optical modulation of charge carriers. Our device acts as a smarter Pavlovian dog exhibiting adjustable associative learning with the training cycles tuned from thirteen to two. In particular, we obtain a large output difference (>103), which is very similar to the all-or-nothing biological sensory/motor neuron spiking with decrementless conduction. As proof-of-concept demonstrations, photoferroelectric coupling-based applications in cryptography and logic gates are achieved in a single device, indicating compatibility with biological and digital data processing.


2021 ◽  
Vol 15 (1) ◽  
pp. 25-30
Author(s):  
Sara Solimani Asl ◽  
Cyrus Jalili ◽  
Tayebeh Artimani ◽  
Mahdi Ramezani ◽  
Fatemeh Mirzaei

Adult neurogenesis is the process of producing new neurons in the adult brain and is limited to two major areas: the hippocampal dentate gyrus and the Subventricular Zone (SVZ). Adult neurogenesis is affected by some physiological, pharmacological, and pathological factors. The inflammasome is a major signalling platform that regulates caspase-1 and induces proinflammatory cytokines production such as interleukin-1β (IL1-β) and IL-18. Inflammasomes may be stimulated through multiple signals, and some of these signaling factors can affect neurogenesis. In the current review, “adult neurogenesis and inflammasome” were searched in PubMed, Scopus, and Google Scholar. Reviewing various research works showed correlations between inflammasome and neurogenesis by different intermediate factors, such as interferons (IFN), interleukins (IL), α-synuclein, microRNAs, and natural compounds. Concerning the significant role of neurogenesis in the health of the nervous system and memory, understanding factors inducing neurogenesis is crucial for identifying new therapeutic aims. Hence in this review, we will discuss the different mechanisms by which inflammasome influences adult neurogenesis.


2021 ◽  
pp. 8-10
Author(s):  
Dr. V. Murugesh ◽  
◽  
Ruth Keziah M ◽  

The specific term for the Water hyacinth plant is Eichhorniacrassipes. The water plant that flows freely, rising at still or slower water sources. Water Hyacinth develops massive biomass and doubles its population in two weeks by fast-growing. These entail a loss of biodiversity, water pollution, water loss, agriculture, infrastructure damage and negatively effect on public safety, and water species. The objective of the study is to evaluate the chemical composition of water hyacinth ash by XRD and SEM .XRD is an obligatory method for analysing the characteristics and composition of materials. It is a non-destructive method to analyse all types of material substances like powder, crystals, and fluids. Nowadays X-ray diffraction Techniques are utilized in assorted fields like research, development, and production of materials. The particle size, shapes, surface roughness, and fracture are defined using aEDAX. When a sample is placed on the beam and multiple signals determine the interactions with the samples. Acetone is used to stop the hydration reactions. Then the specimen is dried and made to conduct. Finally, a micrograph was recorded using SEM.


2021 ◽  
Vol 1 (1) ◽  
pp. 8-10
Author(s):  
Murugesh V. ◽  
Ruth Keziah .M

The specific term for the Water hyacinth plant is Eichhorniacrassipes. The water plant that flows freely, rising at still or slower water sources. Water Hyacinth develops massive biomass and doubles its population in two weeks by fast-growing. These entail a loss of biodiversity, water pollution, water loss, agriculture, infrastructure damage and negatively effect on public safety, and water species. The objective of the study is to evaluate the chemical composition of water hyacinth ash by XRD and SEM .XRD is an obligatory method for analysing the characteristics and composition of materials. It is a nondestructive method to analyse all types of material substances like powder, crystals, and fluids. Nowadays X-ray diffraction Techniques are utilized in assorted fields like research, development, and production of materials. The particle size, shapes, surface roughness, and fracture are defined using aEDAX. When a sample is placed on the beam and multiple signals determine the interactions with the samples. Acetone is used to stop the hydration reactions. Then the specimen is dried and made to conduct. Finally, a micrograph was recorded using SEM.


2021 ◽  
Author(s):  
Ariel Novoplansky ◽  
Omer Falik ◽  
Shachar Mauda ◽  
Lennart Kersting

Abstract Plants are able to perceive, integrate and respond to multiple signals and cues informative of imminent threats and opportunities. Here we studied the ecological implications of interplant drought cuing by subjecting unstressed target plants to short periods of root cuing from neighbors that were either stressed or unstressed by drought. Our findings show for the first time that cues emitted from the roots of drought-inflicted plants could elicit greater survival in neighboring plants under a subsequent drought, yet at the expense of lowered performance under benign conditions. Interestingly, these adaptations and costs could be similarly elicited in immediate neighbors via direct cuing and in more distant neighbors via relayed-cuing. Further investigation into the mechanism of interplant drought cuing implicated abscisic acid (ABA) as the exogenous vector based on three lines of evidence- a) drought cuing was greatly reduced in ABA-deficient plants such as Wilty mutant plants or fluridone-treated plants, b) metabolomic analysis demonstrated that the roots of both drought-stressed plants and their unstressed neighbors exuded significantly more ABA than their uncued controls, c) Both direct and relayed cuing from ABA-treated neighbors increased the survival and performance of unstressed target plants under a subsequent drought, and inflicted performance costs on target plants that grew under benign conditions. were not subjected to a subsequent drought. Our findings suggest that interplant root communication of drought cues could have novel implications for plant interactions, survival and performance under both natural and agricultural settings, calling for its further investigation under field conditions.


2021 ◽  
Vol 1754 (1) ◽  
pp. 012149
Author(s):  
Shaowei Zhou ◽  
YinQuan Yu ◽  
JinWen Yang ◽  
WenBin Tu ◽  
Guopei Wu

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