158 research outputs found
Ecological aspect of children's anthropometric investigation
The aim of work is to study the main indexes of physical development of children in the age from 3 to 10, living in districts of Belgorod region (Russia) with different levels of ecological pollutio
Search for molecular-genetic markers of risk germination hyperplastic processes in endometry combined with hysteromyoma
The results of studies of uterine fibroids in women. Studies on the role of combinations molecular-genetic markers of cytokines in germination hyperplastic processes combined with hysteromyoma are part of this studyye
Influence of palm oil enriched diet on the morphofunctional condition of rats mandibular condylar cartilage
The aim of the study was to establish the morpho-functional condition of mandibular condylar cartilage in white rats of different ages under conditions of excessive use of palm oil and to assess the possibility of correcting the identified changes using the Garcinia Cambogia extrac
Widely distributed breeding populations of Canada warbler (Cardellina canadensis) converge on migration through Central America
Background
To effectively conserve migratory species, the entire range encompassed by their annual life cycle needs to be considered. Most research on Nearctic-Neotropical migratory birds has focused on the breeding grounds resulting in a general lack of knowledge regarding the wintering and migratory periods. The Canada Warbler (Cardellina canadensis) has declined by 71% from 1970 to 2012, at a rate of 2.9% per year, and is listed as Threatened in Canada. As with most Nearctic-Neotropical migrants, conservation efforts outside the breeding range are limited by a poor understanding of migration routes and the connectivity between specific breeding and wintering populations.
Results
To determine migratory routes of multiple breeding populations of Canada Warblers, we directly-tracked individuals using light-level geolocators deployed at four sites across the breeding range, spanning approximately 43 degrees in longitude (Alberta, Manitoba and Québec, Canada, and New Hampshire, USA). Twenty-five geolocators with usable data were recovered from three sites and were analyzed using FlightR to determine fall migration routes (n = 18) and individual wintering sites (n = 25). Individuals from all breeding populations took a western fall migration route at the Gulf of Mexico; with 77.8% of birds funnelling into a narrow geographic space along the western side of the Gulf of Mexico (97°W-99°W). We found no evidence for population-specific, parallel migration routes. Most individuals (72%) overwintered in Colombia. The remaining individuals overwintered in Venezuela.
Conclusions
Our results demonstrate convergence of migratory routes around a migration barrier for individuals originating from widely distributed breeding areas. Further, we suggest the potential importance of habitat around the Gulf of Mexico during migration and Andean forest in Colombia as overwintering habitat for this threatened species. Future research should be directed at understanding how these areas are used by Canada Warblers
Low-Energy Theorems from Holography
In the context of gauge/gravity duality, we verify two types of gauge theory
low-energy theorems, the dilation Ward identities and the decoupling of heavy
flavor. First, we provide an analytic proof of non-trivial dilation Ward
identities for a theory holographically dual to a background with gluon
condensate (the self-dual Liu--Tseytlin background). In this way an important
class of low-energy theorems for correlators of different operators with the
trace of the energy-momentum tensor is established, which so far has been
studied in field theory only. Another low-energy relationship, the so-called
decoupling theorem, is numerically shown to hold universally in three
holographic models involving both the quark and the gluon condensate. We show
this by comparing the ratio of the quark and gluon condensates in three
different examples of gravity backgrounds with non-trivial dilaton flow. As a
by-product of our study, we also obtain gauge field condensate contributions to
meson transport coefficients.Comment: 32 pages, 4 figures, two references added, typos remove
The study of the role of genetical combination rs6729809 and rs10769908 in the formation of hyperplastic processes
The aim of the research was to study the role of the combinations of the genes rs6729809 and rs10769908 in the formation of hyperplastic processes of uterus among the population of the Central Chernozem region of Russi
Combination of genes rs2241423, rs12444979 and rs6732220 spreading analysis in patients with hyperplastic processes of the uterus
The aim of the research was to study part of combination of genes rs2241423, rs12444979 and rs6732220 among Russia Central Chernozem region populatio
Application of scanning probe microscopy methods to control the synthesis technology of multilayer structures with Bi-substituted iron garnets
Authors present the synthesis technology in which a lower surface roughness of the layers in multilayer structure with Bi-substituted iron garnets can be achieved through simultaneous crystallization annealing of the bottom Bi-substituted iron garnet layer and the top layer of SiO2.The authors acknowledge support by the RF Ministry of Education and Science (project no.3.7126.2017)
Оптимизация антибактериальной терапии у пациентов с эндо-пародонтальными поражениями
To improve the quality and effectiveness of medical care for patients with inflammatory periodontal diseases, it is necessary to search for new approaches in both diagnosis and treatment. The aim of our study is to determine the effect of the diode laser on the pathogenic microflora of periodontal pockets and root canals in patients with endo-periodontal lesions (EPL). We carried out a comparative assessment of the bacterial contents of the root canals and periodontal pockets by polymerase chain reaction (PCR) before and after treatment with a diode laser (Doctor Smile Simpler, wavelength 980 nm) for 54 patients with EPL. The control group consisted of 56 patients who were treated according to the generally accepted method, including professional oral hygiene, endodontic treatment, and curettage of periodontal pockets. Evaluation criteria were a qualitative assessment of the content of periodontopathogens in the root canal and periodontal pocket before and after and treatment. As a result of our study, we found a statistically significant (p<0.01) reduction in the colonization of periodontal pockets and root canals in patients with EPL after laser decontamination. The high technological effectiveness of the methods used in combination with the low risk of complications at the stages of endodontic and periodontological treatment provides an antibacterial effect and reduces the duration of inflammation. The results of treatment of patients using a diode laser give reason to recommend their use in the dental practice.Для повышения качества и эффективности оказания медицинской помощи пациентам с воспалительными заболеваниями пародонта необходим поиск новых подходов к диагностике и лечению патологии. Целью исследования было изучить влияние излучения диодного лазера на патогенную микрофлору пародонтальных карманов (ПК) и корневых каналов (КК) у пациентов с эндо-пародонтальными поражениями (ЭПП). Проведена сравнительная оценка бактериального содержимого КК и ПК методом полимеразно-цепной реакции (ПЦР) до и после лечения с применением стоматологического диодного лазера (Doctor Smile Simpler, длина волны 980 нм) у 54 пациентов с ЭПП. Группу контроля составили 56 пациентов, которым проводилось лечение по общепринятой методике, включающей профессиональную гигиену рта, эндодонтическое лечение и кюретаж ПК. Критерием оценки явилось качественное содержание пародонтопатогенов в КК и ПК до и после лечения. Выявлено статистически значимое (p<0,01) снижение обсемененности ПК и КК у пациентов с ЭПП после лазерной деконтаминации. Высокая технологичность использованных методик в сочетании с низкими рисками осложнений на этапах эндодонтического и пародонтологического лечения обеспечивает антибактериальный эффект и сокращает продолжительность воспалительных явлений. Результаты лечения пациентов с применением диодного лазера дают основание рекомендовать их использование в практике врача-стоматолога
Doping the holographic Mott insulator
Mott insulators form because of strong electron repulsions, being at the
heart of strongly correlated electron physics. Conventionally these are
understood as classical "traffic jams" of electrons described by a short-ranged
entangled product ground state. Exploiting the holographic duality, which maps
the physics of densely entangled matter onto gravitational black hole physics,
we show how Mott-insulators can be constructed departing from entangled
non-Fermi liquid metallic states, such as the strange metals found in cuprate
superconductors. These "entangled Mott insulators" have traits in common with
the "classical" Mott insulators, such as the formation of Mott gap in the
optical conductivity, super-exchange-like interactions, and form "stripes" when
doped. They also exhibit new properties: the ordering wave vectors are detached
from the number of electrons in the unit cell, and the DC resistivity diverges
algebraically instead of exponentially as function of temperature. These
results may shed light on the mysterious ordering phenomena observed in
underdoped cuprates.Comment: 27 pages, 9 figures. Accepted in Nature Physic
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