scholarly journals Peculiarities of ultra-sound dispersion of thermally expanded graphite

2019 ◽  
Vol 58 (4) ◽  
pp. 102-109
Author(s):  
Nadezhda V. Pykhova ◽  
◽  
Nikolay V. Negutorov ◽  
Alexandre Yu. Prutskov ◽  
Anastasia N. Zhanakhova ◽  
...  
Keyword(s):  
Expanded Graphite ◽  
The Body ◽  
Graphite Surface ◽  
Basic Material ◽  
Ultra Sound ◽  
Organic Liquids ◽  
Thermally Expanded Graphite ◽  
Graphite Particles ◽  
Sound Dispersion ◽  
To Receive

Thermally expanded graphite (TEG) is one of the best precursors for receiving of plane nano-dimensional particles. Crucible graphite of Taigin deposit was used as a basic material to receive TEG. It is established that repeated thermo-chemical, as well as additional mechanical TEG dispersion does not lead to formation of nano-dimensional graphite particles. In order to receive graphite particles with several nano-meters of thickness, TEG was treated by ultra-sound dispersion in four liquid mediums. Different influence of chosen liquid mediums on the process of ultra-sound dispersion of TEG particles is conditioned by peculiarities of liquids’ behavior in cavitation process, it is described integrally by a notion “erosion activity”. Erosion activity, in the first turn, depends on the superficial tension. The quantity of the received broken material is defined by the depth of penetration of the liquid into the body volume, which depends on liquid wettability. The used liquids: water, acetone, benzene and toluene had different polarity and superficial tension that allowed to put into reality different physical and chemical effects at TEG dispersion. Benzene has the lowest meaning of superficial tension, it moistens the graphite surface very well and penetrates easily into its micropores. Despite of the relatively low erosion capacity, non-polar organic liquids, penetrating to the big depth into the graphite particle’s volume are capable to provoke a visible breaking influence at ultra-sound dispersion on inner graphite structures and its breakage into plates. The best results of breakage are reached at use of benzene that has zero molecule polarity and the best wettability of graphite surface. At ultra-sound dispersion in all environments, plane graphite particles are received that are several dozens of nano-meters thick. However, some particles broken in ultra-sound have visible fluctuations from ideal plane form and can form complicated spatial figures of irregular structure. The received results may be a base for creation of a method for receiving of thin graphite plates with geometrical parameters that are necessary for making of composites and objects of nano-techniques.

Structural and frictional peculiarities of nanocrystalline thermally expanded graphite particles sonicated in water and glycerol

2017 ◽  
Vol 38 (3) ◽  
pp. 202-207 ◽  
Author(s):  
A. P. Krasnov ◽  
A. V. Naumkin ◽  
V. N. Aderikha ◽  
D. I. Buyaev ◽  
I. O. Volkov ◽  
...  
Keyword(s):  
Expanded Graphite ◽  
Thermally Expanded Graphite ◽  
Graphite Particles

Acoustic density testing of blanks made of thermally expanded graphite

2020 ◽  
Author(s):  
O. P. Bogdan ◽  
O. V. Muravieva ◽  
D. V. Zlobin
Keyword(s):  
Expanded Graphite ◽  
Thermally Expanded Graphite

Adsorption Properties of Natural Carbonaceous Adsorbents and Thermally Expanded Graphite

2003 ◽  
Vol 76 (10) ◽  
pp. 1577-1582 ◽  
Author(s):  
Yu. I. Tarasevich ◽  
S. V. Bondarenko ◽  
V. V. Brutko ◽  
A. I. Zhukova ◽  
G. N. Malysh ◽  
...  
Keyword(s):  
Expanded Graphite ◽  
Adsorption Properties ◽  
Thermally Expanded Graphite ◽  
Carbonaceous Adsorbents

Suspiria

2015 ◽  
Author(s):  
Alexandra Heller-Nicholas
Keyword(s):  
20Th Century ◽  
The Body ◽  
Horror Films ◽  
American Museum ◽  
Moving Image ◽  
International Reputation ◽  
The Impact ◽  
To Receive

As one of the most globally recognisable instances of 20th-century Eurohorror, Dario Argento's Suspiria (1976) is poetic, chaotic, and intriguing. The cult reputation of Argento's baroque nightmare is reflected in the critical praise it continues to receive almost 40 years after its original release, and it appears regularly on lists of the greatest horror films ever. For fans and critics alike, Suspiria is as mesmerising as it is impenetrable: the impact of Argento's notorious disinterest in matters of plot and characterisation combines with Suspiria's aggressive stylistic hyperactivity to render it a movie that needs to be experienced through the body as much as through emotion or the intellect. For its many fans, Suspiria is synonymous with European horror more broadly, and Argento himself is by far the most famous of all the Italian horror directors. If there was any doubt of his status as one of the great horror auteurs, Argento's international reputation was solidified well beyond the realms of cult fandom in the 1990s with retrospectives at both the American Museum of the Moving Image and the British Film Institute. This book considers the complex ways that Argento weaves together light, sound and cinema history to construct one of the most breathtaking horror movies of all time, a film as fascinating as it is ultimately unfathomable.

Threshold

2016 ◽  
Author(s):  
Emanuele Castrucci
Keyword(s):  
Social Behaviour ◽  
Human Mind ◽  
The Body ◽  
Basic Material ◽  
Moral Order ◽  
Human Beings ◽  
Human History ◽  
Biological Basis ◽  
The Past ◽  
The Mind

The human mind has phased out its traditional anchorage in a natural biological basis (the «reasons of the body» which even Spinoza’s Ethics could count on) – an anchorage that had determined, for at least two millennia, historically familiar forms of culture and civilisation. Increasingly emphasising its intellectual disembodiment, it has come to the point of establishing in a completely artificial way the normative conditions of social behaviour and the very ontological collocation of human beings in general. If in the past ‘God’ was the name that mythopoietic activity had assigned to the world’s overall moral order, which was reflected onto human behaviour, now the progressive freeing of the mind – by way of the intellectualisation of life and technology – from the natural normativity which was previously its basic material reference opens up unforeseen vistas of power. Freedom of the intellect demands (or so one believes) the full artificiality of the normative human order in the form of an artificial logos, and precisely qua artificial, omnipotent. The technological icon of logos (which postmodern dispersion undermines only superficially) definitively unseats the traditional normative, sovereign ‘God’ of human history as he has been known till now. Our West has been irreversibly marked by this process, whose results are as devastating as they are inevitable. The decline predicted a century ago by old Spengler is here served on a platter....

scholarly journals Single-Ascending-Dose Pharmacokinetics and Safety of the Novel Broad-Spectrum Antifungal Triazole BAL4815 after Intravenous Infusions (50, 100, and 200 Milligrams) and Oral Administrations (100, 200, and 400 Milligrams) of Its Prodrug, BAL8557, in Healthy Volunteers

2006 ◽  
Vol 50 (1) ◽  
pp. 279-285 ◽  
Author(s):  
Anne Schmitt-Hoffmann ◽  
Brigitte Roos ◽  
Markus Heep ◽  
Michael Schleimer ◽  
Erhard Weidekamm ◽  
...  
Keyword(s):  
Broad Spectrum ◽  
Plasma Concentrations ◽  
Pathogenic Fungi ◽  
Volume Of Distribution ◽  
The Body ◽  
Water Soluble ◽  
Maximum Plasma ◽  
Serious Adverse Events ◽  
Time Curve ◽  
To Receive

ABSTRACT BAL8557 is the water-soluble prodrug of a novel antifungal triazole, BAL4815. BAL4815 is active against a broad spectrum of major opportunistic and pathogenic fungi, including strains that are resistant to other azoles. Cohorts of healthy male subjects received single-ascending oral (p.o.) doses of BAL8557 that were equivalent to 100, 200, or 400 mg of BAL4815 or single-ascending, 1-h constant-rate intravenous (i.v.) infusions of BAL8557 which were equivalent to 50, 100, or 200 mg of BAL4815. In each cohort, six subjects were randomly assigned to receive active drug and two subjects were assigned to receive the placebo. All doses were well tolerated, and no severe or serious adverse events occurred. Maximum plasma concentrations of BAL4815 were observed 1.5 to 3 h after p.o. drug intake or at the end of the 1-h infusion. After both routes of administration, values for maximum drug concentration observed in plasma and area under the concentration-time curve increased slightly more than proportionally to the administered dose. Mean elimination half-lives were particularly long (56 to 77 h after p.o. administration and 76 to 104 h after i.v. administration). The volume of distribution was large (155 to 292 liters after p.o. administration and 304 to 494 liters after i.v. administration) and systemic clearance was low (1.9 to 2.8 liter/h after p.o. administration and 2.8 to 5.0 liter/h after i.v. administration). Urinary recovery of BAL4815 was less than 0.4% of the infused dose. Based on the exposure data, oral bioavailability of BAL4815 is assumed to be very high. The pharmacokinetics of BAL4815 are well suited to maintaining concentrations of BAL4815 for a long period of time in the body and to enabling an effective treatment of systemic mycoses.

scholarly journals Effect of Body Representation Level of an Avatar on Quality of AR-Based Remote Instruction

2020 ◽  
Vol 4 (1) ◽  
pp. 3
Author(s):  
Tzu-Yang Wang ◽  
Yuji Sato ◽  
Mai Otsuki ◽  
Hideaki Kuzuoka ◽  
Yusuke Suzuki
Keyword(s):  
Augmented Reality ◽  
Body Representation ◽  
The Body ◽  
Instruction System ◽  
Three Body ◽  
To Receive ◽  
Representation Level

In manufacturing, augmented reality (AR)-based remote instruction systems, which enable workers to receive instructions from an avatar, are widely used. In this study, we developed such a system and investigated the effect of the body representation level of the avatar on the quality of AR-based remote instruction. Drawing on the avatar designs of previous works, three different avatar designs (“Hand only”, “Hand + Arm”, and “Body”), representing three body representation levels, were created. In the experiment with a within-participant design, the avatar pointed at blocks sequentially and participants touched each block as soon as they identified it. The results of the experiment indicate that an AR-based remote instruction system with a “Body” avatar exhibits higher usability and can enable the participants to have a lower workload and higher efficiency.

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