Capillary number encouraged the construction of smart biomimetic eyes

2015 ◽  
Vol 3 (23) ◽  
pp. 5896-5902 ◽  
Author(s):  
Lanlan Wang ◽  
Hongzhong Liu ◽  
Weitao Jiang ◽  
Rui Li ◽  
Fang Li ◽  
...  
Keyword(s):  
Capillary Number ◽  
Compound Eyes ◽  
Human Eyes

By tuning capillary number, the proposed smart biomimetic eyes were endowed with advantages of insects' compound eyes and human eyes.

Insect–Human Hybrid Eye (IHHE): an adaptive optofluidic lens combining the structural characteristics of insect and human eyes

Lab on a Chip ◽  
2014 ◽  
Vol 14 (18) ◽  
pp. 3594-3602 ◽  
Author(s):  
Kang Wei ◽  
Hansong Zeng ◽  
Yi Zhao
Keyword(s):  
Structural Characteristics ◽  
Large Angle ◽  
Compound Eyes ◽  
Angle Of View ◽  
Human Eyes

An optofluidic device named the “Insect–Human Hybrid Eye” (IHHE), which combines the architectural merits of both human camera eyes and insect compound eyes, is presented to implement imaging with a large angle of view and adaptive focusing along any direction within the field.

Differentiation Processes of the Ocellar Retina of the Honeybee (Apis Mellifera L.)

1990 ◽  
Vol 48 (3) ◽  
pp. 430-431
Author(s):  
Maria Anna Pabst
Keyword(s):  
Apis Mellifera ◽  
Distal Part ◽  
Cell Layer ◽  
Single Layer ◽  
Photoreceptor Cells ◽  
Distal Segment ◽  
Compound Eyes ◽  
Thin Sections ◽  
Ultrastructural Studies ◽  
Adult Worker

In addition to the compound eyes, honeybees have three dorsal ocelli on the vertex of the head. Each ocellus has about 800 elongated photoreceptor cells. They are paired and the distal segment of each pair bears densely packed microvilli forming together a platelike fused rhabdom. Beneath a common cuticular lens a single layer of corneagenous cells is present.Ultrastructural studies were made of the retina of praepupae, different pupal stages and adult worker bees by thin sections and freeze-etch preparations. In praepupae the ocellar anlage consists of a conical group of epidermal cells that differentiate to photoreceptor cells, glial cells and corneagenous cells. Some photoreceptor cells are already paired and show disarrayed microvilli with circularly ordered filaments inside. In ocelli of 2-day-old pupae, when a retinogenous and a lentinogenous cell layer can be clearly distinguished, cell membranes of the distal part of two photoreceptor cells begin to interdigitate with each other and so start to form the definitive microvilli. At the beginning the microvilli often occupy the whole width of the developing rhabdom (Fig. 1).

New species of bristletails of the genus Lepismachilis (Archaeognatha: Machilidae) from Serbia and Montenegro

2018 ◽  
Vol 58 (2) ◽  
pp. 577-587
Author(s):  
Vladimir Kaplin
Keyword(s):  
New Species ◽  
Balkan Peninsula ◽  
Species Group ◽  
Compound Eyes ◽  
Serbia And Montenegro ◽  
Sensory Field ◽  
Fore Femur ◽  
Three New Species

Abstract The fauna of bristletails of the genus Lepismachilis Verhoeff, 1910 in Montenegro and Serbia includes only one species L. (Berlesilis) targionii (Grassi, 1887) with 2 + 2 eversible vesicles on abdominal urocoxites II–VI. Three new species of this genus are described: L. (Lepismachilis) prijepolja sp. nov., L. (Lepismachilis) limensa sp. nov. from Serbia, and L. (Lepismachilis) alexandrae sp. nov. from Montenegro. All described new species belong to the species group of the subgenus Lepismachilis s. str. with 2 + 2 eversible vesicles on abdominal urocoxites II–V. Lepismachilis prijepolja sp. nov. differs from L. y-signata Kratochvíl, 1945 and L. notata Stach, 1919 by the color, drawings and ratios of the compound eyes; ratios of sensory field on fore femur of male, number of divisions of ovipositor. Lepismachilis limensa sp. nov. differs from L. hauseri Bitsch, 1974 and L. abchasica Kaplin, 2017 by ratios of paired ocelli, sensory field on fore femur of male; ratios and chaetotaxy of maxillary and labial palps. Lepismachilis alexandrae sp. nov. differs from L. abchasica by the drawings of the compound eyes; ratios of paired ocelli, sensory field on fore femur of male; number of divisions of the parameres and gonapophyses. A list of the Machilidae occurring in Balkan Peninsula is also provided.

The Process of Globalization and Its Impact on Media

2016 ◽  
Vol 1 (4) ◽  
pp. 150
Author(s):  
Veton Zejnullahi
Keyword(s):  
New Technology ◽  
World Order ◽  
Modern Society ◽  
Media Access ◽  
Four Corners ◽  
The World ◽  
The Media ◽  
The Republic ◽  
Human Eyes ◽  
The Impact

The process of globalization, which many times is considered as new world order is affecting all spheres of modern society but also the media. In this paper specifically we will see the impact of globalization because we see changing the media access to global problems in general being listed on these processes. We will see that the greatest difficulties will have small media as such because the process is moving in the direction of creating mega media which thanks to new technology are reaching to deliver news and information at the time of their occurrence through choked the small media. So it is fair to conclude that the rapid economic development and especially the technology have made the world seem "too small" to the human eyes, because for real-time we will communicate with the world with the only one Internet connection, and also all the information are take for the development of events in the four corners of the world and direct from the places when the events happen. Even Albanian space has not left out of this process because the media in the Republic of Albania and the Republic of Kosovo are adapted to the new conditions under the influence of the globalization process. This fact is proven powerful through creating new television packages, written the websites and newspapers in their possession.

THE TIME FACTOR IN SELECTIVE ELECTROSTIMULATION OF THE ROD ELEMENTS IN HUMAN EYES

1960 ◽  
Vol 10 (5) ◽  
pp. 448-455
Author(s):  
Daizo YONEMURA ◽  
Keifu MURAKAMI
Keyword(s):  
Time Factor ◽  
Human Eyes

Outflow resistance of enucleated human eyes at two different perfusion pressures and different extents of trabeculotomy

1989 ◽  
Vol 8 (12) ◽  
pp. 1233-1240 ◽  
Author(s):  
Robert Rosenquist ◽  
David Epstein ◽  
Shlomo Melamed ◽  
Mark Johnson ◽  
W. Morton Grant
Keyword(s):  
Outflow Resistance ◽  
Human Eyes

Investigating the effect of wearing glasses on the human eyes' temperature distribution in different ambient conditions

2021 ◽  
pp. 102971
Author(s):  
Kavan Zarei ◽  
Mansour Lahonian ◽  
Saman Aminian ◽  
Sasan Saedi ◽  
Mehdi Ashjaee
Keyword(s):  
Temperature Distribution ◽  
Ambient Conditions ◽  
Human Eyes

scholarly journals In search of the spectral composition of an effective light trap for the mushroom pest Lycoriella ingenua (Diptera: Sciaridae)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sándor Kecskeméti ◽  
András Geösel ◽  
József Fail ◽  
Ádám Egri
Keyword(s):  
Light Intensity ◽  
Spectral Sensitivity ◽  
Fungal Pathogens ◽  
Light Trap ◽  
Spectral Composition ◽  
Wavelength Dependence ◽  
Crop Damage ◽  
Photon Flux ◽  
Compound Eyes ◽  
Behavioural Experiments

AbstractCertain fungus gnats, like Lycoriella ingenua are notorious pests in agriculture, especially in mushroom production. While larvae cause mainly direct crop damage, adults are vectors of several dangerous fungal pathogens. To promote the development of pesticide-free management methods, such as light trapping, we measured the spectral sensitivity of L. ingenua compound eyes with electroretinography and performed two different behavioural experiments to reveal the wavelength dependence of phototaxis in this species. The spectral sensitivity of the compound eyes is bimodal with peaks at 370 nm (UV) and 526 nm (green). Behavioural experiments showed that attraction to light as a function of wavelength depends on light intensity. In our first experiment, where the minimal photon flux (105–109 photons/cm2/s) needed for eliciting a phototactic response was determined wavelength by wavelength, phototaxis was strongest in the green spectral range (~526 nm). In the other behavioural experiment, where wavelength preference was tested under a higher but constant light intensity (~1013 photons/cm2/s), the highest attraction was elicited by UV wavelengths (398 nm). Our results suggest that both UV and green are important spectral regions for L. ingenua thus we recommend to use both UV (~370-398 nm) and green (~526 nm) for trapping these insects.

Critical conditions for organic thread cutting under electric fields

Soft Matter ◽  
2021 ◽  
Author(s):  
Shuai Yin ◽  
Yi Huang ◽  
Teck Neng Wong
Keyword(s):  
Electric Fields ◽  
Capillary Number ◽  
Critical Conditions ◽  
Thread Cutting ◽  
On Demand

Critical conditions with electric capillary number are investigated for triggering the on-demand cutting of an organic thread in a microchannel under electric fields.

Descriptive analysis of Fibulin-3 and the extracellular vesicle marker, Alix, in drusen from a small cohort of postmortem human eyes

2021 ◽  
Vol 203 ◽  
pp. 108422
Author(s):  
Stephanie L. Grillo ◽  
Justin D. Etzel ◽  
Sarah R. Weber ◽  
Cassandra Ondeck ◽  
Weiwei Wang ◽  
...  
Keyword(s):  
Descriptive Analysis ◽  
Extracellular Vesicle ◽  
Small Cohort ◽  
Human Eyes
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