137 research outputs found
Сопоставление данных гистологического и цитологического исследования при хроническом простатите
It has bee done comparison of the facts of cytological and histological analyses in case of chronic prostatitis. It has been established that 64 patient had mainly an acssudativ form of the inflammatory reaction, 49 patients had productive and 39 patients had proliferate phase of an acute inflammatory. PSA indexes more than 4 ng/ml have indicated the necessity of biopsy. This research, including the quantitative value of polumorphnonucleas leucocytes, eosynophyliq leucocytes, basophilic leucocytes, plasmatic cells, mononuclear leucocytes, and macrophages and fibroblast, has brought to light an absolute accordance of the facts cytological analyze. Which had been obtained by the exploration of secrets of prostate and the facts of histological analyze of byoptate of prostate
New precise determination of the \tau lepton mass at KEDR detector
The status of the experiment on the precise lepton mass measurement
running at the VEPP-4M collider with the KEDR detector is reported. The mass
value is evaluated from the cross section behaviour around the
production threshold. The preliminary result based on 6.7 pb of data is
MeV. Using 0.8 pb of data
collected at the peak the preliminary result is also obtained:
eV.Comment: 6 pages, 8 figures; The 9th International Workshop on Tau-Lepton
Physics, Tau0
Measurement of and between 3.12 and 3.72 GeV at the KEDR detector
Using the KEDR detector at the VEPP-4M collider, we have measured
the values of and at seven points of the center-of-mass
energy between 3.12 and 3.72 GeV. The total achieved accuracy is about or
better than at most of energy points with a systematic uncertainty of
about . At the moment it is the most accurate measurement of in
this energy range
Search for narrow resonances in e+ e- annihilation between 1.85 and 3.1 GeV with the KEDR Detector
We report results of a search for narrow resonances in e+ e- annihilation at
center-of-mass energies between 1.85 and 3.1 GeV performed with the KEDR
detector at the VEPP-4M e+ e- collider. The upper limit on the leptonic width
of a narrow resonance Gamma(R -> ee) Br(R -> hadr) < 120 eV has been obtained
(at 90 % C.L.)
Measurement of \Gamma_{ee}(J/\psi)*Br(J/\psi->e^+e^-) and \Gamma_{ee}(J/\psi)*Br(J/\psi->\mu^+\mu^-)
The products of the electron width of the J/\psi meson and the branching
fraction of its decays to the lepton pairs were measured using data from the
KEDR experiment at the VEPP-4M electron-positron collider. The results are
\Gamma_{ee}(J/\psi)*Br(J/\psi->e^+e^-)=(0.3323\pm0.0064\pm0.0048) keV,
\Gamma_{ee}(J/\psi)*Br(J/\psi->\mu^+\mu^-)=(0.3318\pm0.0052\pm0.0063) keV.
Their combinations
\Gamma_{ee}\times(\Gamma_{ee}+\Gamma_{\mu\mu})/\Gamma=(0.6641\pm0.0082\pm0.0100)
keV,
\Gamma_{ee}/\Gamma_{\mu\mu}=1.002\pm0.021\pm0.013 can be used to improve
theaccuracy of the leptonic and full widths and test leptonic universality.
Assuming e\mu universality and using the world average value of the lepton
branching fraction, we also determine the leptonic \Gamma_{ll}=5.59\pm0.12 keV
and total \Gamma=94.1\pm2.7 keV widths of the J/\psi meson.Comment: 7 pages, 6 figure
Measurement of main parameters of the \psi(2S) resonance
A high-precision determination of the main parameters of the \psi(2S)
resonance has been performed with the KEDR detector at the VEPP-4M e^{+}e^{-}
collider in three scans of the \psi(2S) -- \psi(3770) energy range. Fitting the
energy dependence of the multihadron cross section in the vicinity of the
\psi(2S) we obtained the mass value
M = 3686.114 +- 0.007 +- 0.011 ^{+0.002}_{-0.012} MeV and the product of the
electron partial width by the branching fraction into hadrons \Gamma_{ee}*B_{h}
= 2.233 +- 0.015 +- 0.037 +- 0.020 keV.
The third error quoted is an estimate of the model dependence of the result
due to assumptions on the interference effects in the cross section of the
single-photon e^{+}e^{-} annihilation to hadrons explicitly considered in this
work.
Implicitly, the same assumptions were employed to obtain the charmonium
leptonic width and the absolute branching fractions in many experiments.
Using the result presented and the world average values of the electron and
hadron branching fractions, one obtains the electron partial width and the
total width of the \psi(2S):
\Gamma_{ee} =2.282 +- 0.015 +- 0.038 +- 0.021 keV,
\Gamma = 296 +- 2 +- 8 +- 3 keV.
These results are consistent with and more than two times more precise than
any of the previous experiments
Study of KS KL Coupled Decays and KL -Be Interactions with the CMD-2 Detector at VEPP-2M Collider
The integrated luminosity about 4000 inverse nanobarn of around phi meson
mass ( 5 millions of phi mesons) has been collected with the CMD-2 detector at
the VEPP-2M collider. A latest analysis of the KS KL coupled decays based on 30
% of available data is presented in this paper.
The KS KL pairs from phi meson decays were reconstructed in the drift chamber
when both kaons decayed into two charged particles. From a sample of 1423
coupled decays a selection of candidates to the CP violating KL into pi+ pi-
decay was performed. CP violating decays were not identified because of the
domination of events with a KL regenerating at the Be beam pipe into KS and a
background from KL semileptonic decays.
The regeneration cross section of 110 MeV/c KL mesons was found to be 53 +-
17 mb in agreement with theoretical expectations. The angular distribution of
KS mesons after regeneration and the total cross section of KL for Be have been
measured.Comment: 14 pages, 8 figure
Search for rare Phi decays in pi+ pi_ gamma final state
A search for phi radiative decays has been performed using a data sample of
about 2.0 million phi decays collected by the CMD-2 detector at VEPP-2M
collider in Novosibirsk. From the selected e+ e- -> pi+ pi- gamma events the
following results were obtained: B(phi -> f0(980) gamma) < 1x10-4 for
destructive and B(phi -> f0(980) gamma) < 7x10-4 for constructive interference
with the Bremsstrahlung process respectively, B(phi -> gamma -> pi+ pi- gamma)
20 MeV, B(phi -> rho gamma) < 7x10-4. From the
selected e+ e- -> mu+ mu- gamma events B(phi -> mu+ mu- gamma) =
(2.3+-1.0)x10-5 has been obtained for E of gamma> 20 MeV. The upper limit on
the P,CP-violating decay eta -> pi+ pi- has also been placed: B(eta -> pi+ pi-)
< 9x10-4 . All upper limits are at 90 % C.L.Comment: 18 pages, 7 figure
Industrial electron accelerators type ILU
The paper describes ILU type industrial electron accelerators. Their main parameters, design, principle of action,
electron beam extraction devices, wide set of auxiliary equipment for various technological processes and ways of
their usage are discussed as well.Описаны промышленные ускорители электронов серии ИЛУ. Приведены основные параметры,
устройство и принцип действия. Дается краткое описание систем выпуска ускоренного пучка в атмосферу
для различных технологических процессов.Описано промислові прискорювачі електронів серії ЫЛП. Наведено основні параметри, будова і
принцип дії. Дається короткий опис систем випуску прискореного пучку в атмосферу для різних
технологічних процесів
The assessment of physicians' and senior medical students’ knowledge in the field of communityacquired pneumonia: preliminary results of the KNOCAP-II project (2017-2019)
Внебольничная пневмония
(ВП) относится к одной из самых актуальных проблем современной медицины. На сегодняшний день ВП занимает
4 место в структуре смертности (после сердечно-сосудистых, цереброваскулярных заболеваний и злокачественных
новообразований) и 1 место среди всех смертей от инфекционных заболеваний. Цель – оценка уровня знаний врачей
терапевтического профиля и студентов старших курсов медицинских вузов в вопросах ведения пациентов с ВП. В
рамках многоцентрового исследования KNOCAP (полное название проекта – «The assessment of physician and
students’ knowledge of community-acquired pneumonia basics») представлены результаты анонимного проспективного
опроса по оценке знаний и предпочтений врачей терапевтического профиля и студентов старших медицинских
курсов в вопросах ведения пациентов с ВП. По итогам первого периода проекта (2017-2019 гг.) получены и
проанализированы результаты анкетирования 588 врачей терапевтического профиля и 394 студентов-медиков из
17 центров России, Украины и Кыргызстана. За основу взят метод анонимного анкетирования, для чего была
разработана оригинальная анкета на основании актуальных клинических рекомендаций. Наибольшие сложности
вызвали следующие вопросы: сроки проведения повторного рентгенологического исследования при положительной
динамике лечения, выбор основного диагностического признака при ведении пациента с ВП, указать типовые
ошибки фармакотерапии ВП и выбор стартовой антимикробной терапии у пациентов с факторами риска и без
них. В целом исследование показало значимое несоответствие знаний в вопросах ведения пациентов с ВП
актуальным клиническим рекомендациям 2010 г. и проектом новых клинических рекомендаций 2018-2019 гг. В
настоящее время существует необходимость в повышении уровня знаний и совершенствовании профессиональной
деятельности врачей терапевтического профиля и студентов старших медицинских курсов, так как проведенный
многоцентровой срез знаний и предпочтений специалистов во многих вопросах выявил их недостаточный уровень
для корректного ведения пациентов с ВП. Community-acquired pneumonia (CAP) is one of
the most relevant problems of modern medicine. Today, CAP takes 4th place in the structure of mortality (after cardiovascular, cerebrovascular diseases and malignant neoplasms) and 1st place among all deaths from infectious diseases.
The aim of the study is to assess the level of general physician’ and senior medical students’ basic knowledge in CAP
treatment. The article represents the results of anonymous prospective surveys within the framework of the second stage
of KNOCAP multi-centered research project (full name of the project «The assessment of physician’ and students’
knowledge of community-acquired pneumonia basics») aimed at accessing the knowledge and preferences of doctors
and students on the fundamental issues in diagnosis and treatment of community-acquired pneumonia. The survey
conducted in 2017-2019 involved 588 physicians and 394 students from seventeen Russian, Kyrgyzstan and Ukrainian
centers. The method of anonymous questioning was used in this study, for which an original questionnaire was
developed on the basis of current clinical recommendations. The following fundamental questions caused the greatest
difficulties in the respondents: terms for a repeated X-ray examination in positive dynamics of CAP treatment, the
choice of main diagnostic criteria of CAP, the choice of the typical mistakes of CAP treatment, the choice of the initial
antimicrobial therapy. In general, the respondents’ knowledge in CAP patients’ management deviates significantly from
the current clinical guidelines, as of 2010, and from the new clinical guidelines draft, 2018-2019. Currently, there is a
need to increase the level of knowledge and improve the professional activities of therapists and senior medical
students, as a multicenter section of the knowledge and preferences of specialists in many issues revealed their
insufficient level for the correct management of patients with CAP
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