656 research outputs found
Reduction of airborne particulate matter emissions associated with petroleum coke production
This article presents the results of studies on production based on products of secondary oil refining processes of agents for dust suppression and reduction of losses from blowing out of wet bulk carbon-containing materials, in particular petroleum coke, as well as against freezing and adhesion during their transportation at low temperatures. The use of the developed dust suppression-antifreeze agent will reduce exposure to dust of the employees at the delayed coking unit in the course of petroleum coke production and improve its freeze resistance. It will have a positive impact on the solution of the problem of petroleum coke transportation at subzero temperatures, and will also allow expanding the range of marketable products, and increasing production efficiency
Clustering in light nuclei in fragmentation above 1 A GeV
The relativistic invariant approach is applied to analyzing the 3.3 A GeV
Ne fragmentation in a nuclear track emulsion. New results on few-body
dissociations have been obtained from the emulsion exposures to 2.1 A GeV
N and 1.2 A GeV Be nuclei. It can be asserted that the use of the
invariant approach is an effective means of obtaining conclusions about the
behavior of systems involving a few He nuclei at a relative energy close to 1
MeV per nucleon. The first observations of fragmentation of 1.2 A GeV B
and C nuclei in emulsion are described. The presented results allow one
to justify the development of few-body aspects of nuclear astrophysics.Comment: 7 pages, 8 figures, 3 tables, Nuclear Physics in Astrophysics-2,
16-20 May, 2005 (ATOMKI), Debrecen, Hungar
Decomposition of individual components of bio-organic waste: volatile organic compounds and the impact on health and psycho-emotional state
The study considers the impact on the personβs health and psycho-emotional state of unpleasant odors arising from the storage and accumulation of bioorganic waste, including food waste (meat, poultry, fruits and vegetables) and bird droppings. The survey data of poultry and livestock farmsβ employees in Serbia are given. The impact of unpleasant odors on the Waste sorting complex (Moscow region) employeesβ vital signs is assessed. The impact of high-intensity odor groups for individual components of food waste (pork meat, poultry meat, vegetables and fruits) and bird droppings was studied by interviewing volunteers and measuring their vital signs
Dissociation of relativistic C nuclei in nuclear track emulsion
Dissociation of 1.2 A GeV C nuclei in nuclear track emulsionis is
studied.
It is shown that most precise angular measurements provided by this technique
play a crucial role in the restoration of the excitation spectrum of the
2+2p system. Strong contribution of the cascade process
CBBe identified.Comment: 5 pages, 3 figures, conference: The 21st European Conference on
Few-Body Problems in Physics, Salamanca, Spain, 29th August - 3rd September,
201
Fragmentation channels of relativistic Be nuclei in peripheral interactions
Nuclei of Li were accelerated at the JINR Nuclotron. After the
charge-exchange reaction involving these nuclei at an external target a second
Be beam of energy 1.23A GeV was formed. This beam was used to expose
photo-emulsion chambers. The mean free path for inelastic Be interactions
in emulsion =14.00.8 cm coincides within the errors with those
for Li and Li nuclei. More than 10% of the Be events are associated
with the peripheral interactions in which the total charge of the relativistic
fragments is equal to the charge of the Be and in which charged mesons are
not produced. An unusual ratio of the isotopes is revealed in the composition
of the doubly charged Be fragments: the number of He fragments is twice
as large as that of He fragments. In 50% of peripheral interactions, a
Be nucleus decays to two doubly charged fragments. The present paper gives
the channels of the Be fragmentation to charged fragments. In 50% of
events, the Be fragmentation proceeds only to charged fragments involving
no emission of neutrons. Of them, the He+He channel dominates, the
He+d+p and Li+pchannels constitute 10% each. Two events involving no
emission of neutrons are registered in the 3-body He+t+p and He+d+d
channels. The mean free path for the coherent dissociation of relativistic
Be nuclei to He+He is 71 m. The particular features of the
relativistic Be fragmentation in such peripheral interactions are explained
by the He+He 2-cluster structure of the Be nucleus.Comment: 10 pages, 3 figures, 3 tables, conference: Conference on Physics of
Fundamental Interactions, Moscow, Russia, 5-9 Dec 200
Topology of "white" stars in relativistic fragmentation of light nuclei
In the present paper, experimental observations of the multifragmentation
processes of light relativistic nuclei carried out by means of emulsions are
reviewed. Events of the type of "white" stars in which the dissociation of
relativistic nuclei is not accompanied by the production of mesons and the
target-nucleus fragments are considered.
A distinctive feature of the charge topology in the dissociation of the Ne,
Mg, Si, and S nuclei is an almost total suppression of the binary splitting of
nuclei to fragments with charges higher than 2. The growth of the nuclear
fragmentation degree is revealed in an increase in the multiplicity of singly
and doubly charged fragments with decreasing charge of the non-excited part of
the fragmenting nucleus.
The processes of dissociation of stable Li, Be, B, C, N, and O isotopes to
charged fragments were used to study special features of the formation of
systems consisting of the lightest , d, and t nuclei. Clustering in
form of the He nucleus can be detected in "white" stars via the
dissociation of neutron-deficient Be, B, C, and N isotopes.Comment: 20 pages, 3 figures, 9 tables, conference: Conference on Physics of
Fundamental Interactions, Moscow, Russia, 1-5 Mar 2004.(Author's translation
The New Jersey Institute of Technology Robot-Assisted Virtual Rehabilitation (NJIT-RAVR) system for children with cerebral palsy: a feasibility study
<p>Abstract</p> <p>Background</p> <p>We hypothesize that the integration of virtual reality (VR) with robot assisted rehabilitation could be successful if applied to children with hemiparetic CP. The combined benefits of increased attention provided by VR and the larger training stimulus afforded by adaptive robotics may increase the beneficial effects of these two approaches synergistically. This paper will describe the NJIT-RAVR system, which combines adaptive robotics with complex VR simulations for the rehabilitation of upper extremity impairments and function in children with CP and examine the feasibility of this system in the context of a two subject training study.</p> <p>Methods</p> <p>The NJIT-RAVR system consists of the Haptic Master, a 6 degrees of freedom, admittance controlled robot and a suite of rehabilitation simulations that provide adaptive algorithms for the Haptic Master, allowing the user to interact with rich virtual environments. Two children, a ten year old boy and a seven year old girl, both with spastic hemiplegia secondary to Cerebral Palsy were recruited from the outpatient center of a comprehensive pediatric rehabilitation facility. Subjects performed a battery of clinical testing and kinematic measurements of reaching collected by the NJIT-RAVR system. Subjects trained with the NJIT-RAVR System for one hour, 3 days a week for three weeks. The subjects played a combination of four or five simulations depending on their therapeutic goals, tolerances and preferences. Games were modified to increase difficulty in order to challenge the subjects as their performance improved. The testing battery was repeated following the training period.</p> <p>Results</p> <p>Both participants completed 9 hours of training in 3 weeks. No untoward events occurred and no adverse responses to treatment or complaints of cyber sickness were reported. One participant showed improvements in overall performance on the functional aspects of the testing battery. The second subject made improvements in upper extremity active range of motion and in kinematic measures of reaching movements.</p> <p>Conclusion</p> <p>We feel that this study establishes the feasibility of integrating robotics and rich virtual environments to address functional limitations and decreased motor performance in children with mild to moderate cerebral palsy.</p
Π Π°Π·Π»ΠΎΠΆΠ΅Π½ΠΈΠ΅ ΠΎΡΠ΄Π΅Π»ΡΠ½ΡΡ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠΎΠ² Π±ΠΈΠΎΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΡ ΠΎΡΡ ΠΎΠ΄ΠΎΠ²: Π»Π΅ΡΡΡΠΈΠ΅ ΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΡ ΠΈ ΠΈΡ Π²Π»ΠΈΡΠ½ΠΈΠ΅ Π½Π° Π·Π΄ΠΎΡΠΎΠ²ΡΠ΅ ΠΈ ΠΏΡΠΈΡ ΠΎΡΠΌΠΎΡΠΈΠΎΠ½Π°Π»ΡΠ½ΠΎΠ΅ ΡΠΎΡΡΠΎΡΠ½ΠΈΠ΅
The study considers the impact on the personβs health and psycho-emotional state of unpleasant odors arising from the storage and accumulation of bioorganic waste, including food waste (meat, poultry, fruits and vegetables) and bird droppings. The survey data of poultry and livestock farmsβ employees in Serbia are given. The impact of unpleasant odors on the Waste sorting complex (Moscow region) employeesβ vital signs is assessed. The impact of high-intensity odor groups for individual components of food waste (pork meat, poultry meat, vegetables and fruits) and bird droppings was studied by interviewing volunteers and measuring their vital signs.Π Π°ΡΡΠΌΠΎΡΡΠ΅Π½ΠΎ Π²Π»ΠΈΡΠ½ΠΈΠ΅ Π½Π° Π·Π΄ΠΎΡΠΎΠ²ΡΠ΅ ΠΈ ΠΏΡΠΈΡ
ΠΎΡΠΌΠΎΡΠΈΠΎΠ½Π°Π»ΡΠ½ΠΎΠ΅ ΡΠΎΡΡΠΎΡΠ½ΠΈΠ΅ ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΠ° Π½Π΅ΠΏΡΠΈΡΡΠ½ΡΡ
Π·Π°ΠΏΠ°Ρ
ΠΎΠ², Π²ΠΎΠ·Π½ΠΈΠΊΠ°ΡΡΠΈΡ
ΠΏΡΠΈ Ρ
ΡΠ°Π½Π΅Π½ΠΈΠΈ ΠΈ Π½Π°ΠΊΠΎΠΏΠ»Π΅Π½ΠΈΠΈ Π±ΠΈΠΎΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΎΡΡ
ΠΎΠ΄ΠΎΠ², Π² ΡΠΎΠΌ ΡΠΈΡΠ»Π΅ ΠΏΠΈΡΠ΅Π²ΡΡ
ΠΎΡΡ
ΠΎΠ΄ΠΎΠ² (ΠΌΡΡΠ°, ΠΏΡΠΈΡΡ, ΡΡΡΠΊΡΠΎΠ² ΠΈ ΠΎΠ²ΠΎΡΠ΅ΠΉ) ΠΈ ΠΏΡΠΈΡΡΠ΅Π³ΠΎ ΠΏΠΎΠΌΠ΅ΡΠ°. ΠΡΠΈΠ²Π΅Π΄Π΅Π½Ρ Π΄Π°Π½Π½ΡΠ΅ ΠΎΠΏΡΠΎΡΠ° ΡΠ°Π±ΠΎΡΠ½ΠΈΠΊΠΎΠ² ΠΏΡΠΈΡΠ΅Π²ΠΎΠ΄ΡΠ΅ΡΠΊΠΈΡ
ΠΈ ΠΆΠΈΠ²ΠΎΡΠ½ΠΎΠ²ΠΎΠ΄ΡΠ΅ΡΠΊΠΈΡ
ΡΠ΅ΡΠΌ Π‘Π΅ΡΠ±ΠΈΠΈ. ΠΡΠ΅Π½Π΅Π½ΠΎ Π²Π»ΠΈΡΠ½ΠΈΠ΅ Π½Π΅ΠΏΡΠΈΡΡΠ½ΡΡ
Π·Π°ΠΏΠ°Ρ
ΠΎΠ² Π½Π° ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ ΠΆΠΈΠ·Π½Π΅Π΄Π΅ΡΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ ΡΠ°Π±ΠΎΡΠ½ΠΈΠΊΠΎΠ² ΠΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ° ΠΏΠΎ ΡΠΎΡΡΠΈΡΠΎΠ²ΠΊΠ΅ ΠΎΡΡ
ΠΎΠ΄ΠΎΠ² (ΠΠΠ) (ΠΠΎΡΠΊΠΎΠ²ΡΠΊΠ°Ρ ΠΎΠ±Π»Π°ΡΡΡ). ΠΠ»ΠΈΡΠ½ΠΈΠ΅ Π³ΡΡΠΏΠΏ Π·Π°ΠΏΠ°Ρ
ΠΎΠ² Π²ΡΡΠΎΠΊΠΎΠΉ ΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½ΠΎΡΡΠΈ Π½Π° ΠΎΡΠ΄Π΅Π»ΡΠ½ΡΠ΅ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΡ ΠΏΠΈΡΠ΅Π²ΡΡ
ΠΎΡΡ
ΠΎΠ΄ΠΎΠ² (ΠΌΡΡΠ° ΡΠ²ΠΈΠ½ΠΈΠ½Ρ, ΠΌΡΡΠ° ΠΏΡΠΈΡΡ, ΠΎΠ²ΠΎΡΠ΅ΠΉ ΠΈ ΡΡΡΠΊΡΠΎΠ²) ΠΈ ΠΏΡΠΈΡΡΠ΅Π³ΠΎ ΠΏΠΎΠΌΠ΅ΡΠ° ΠΈΠ·ΡΡΠ°Π»ΠΈ ΠΏΡΡΠ΅ΠΌ ΠΎΠΏΡΠΎΡΠ° Π΄ΠΎΠ±ΡΠΎΠ²ΠΎΠ»ΡΡΠ΅Π² ΠΈ ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΡ ΠΈΡ
ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Π΅ΠΉ ΠΆΠΈΠ·Π½Π΅Π΄Π΅ΡΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ
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