Пять базовых упражнений для роста мышц

Рухи важкоатлета під час піднімання штанги великої ваги є дуже складними не тільки у зв’язку з особливостями м’язової діяльності, умовами її здійснення, але й через обмеження правилами змагань. Піднімання штанги максимальної ваги можливе тільки за раціонального розподілу зусиль під час виконання вправи, раціональної траєкторії піднімання штанги. Все це потребує добре відпрацьованої програми рухів. В даній статті розкривається питання про найбільш оптимальні умови прояву зусиль для піднімання штанги максимальної ваги.Motions of weight-lifter during raising of barbell of large weight are very difficult not only in connection with the features of muscular activity, terms of her realization but also through limiting to the rules of competitions. Raising of barbell of maximal weight is possible only at rational distribution of efforts during implementation of exercise, rational trajectory of raising of barbell. All of it needs the well exhaust program of motions. In this article a question opens up about the most optimal terms of display of efforts for raising of barbell of maximal weight.Движения тяжелоатлета во время поднятия штанги большого веса являются очень сложными не только в связи с особенностями мышечной деятельности, условиями ее осуществления, но и через ограничение правилами соревнований. Поднятие штанги максимального веса возможно только при рациональном распределении усилий во время выполнения упражнения, рациональной траектории поднятия штанги. Все это нуждается хорошо отработанной программы движений. В данной статье раскрывается вопрос о наиболее оптимальных условиях проявления усилий для поднятия штанги максимального веса

The mathematical simulation of the temperature fields of building envelopes under permanent frozen soil conditions

The physical-mathematical model of the thermal state of the aired technical underground taking into account the air exchange and design features of construction under permanent frozen soil conditions has been suggested. The computational scheme of the temperature fields prediction of building envelopes of projected buildings and soil under and nearby buildings has been developed. The numerical simulation of the temperature fields of building envelopes changes was conducted during a year. The results of the numerical simulation showed that the heat coming from the technical undergrounds and through the walls does not influence the temperature field of the soil neither under a building nor at a distance from it

Performances and stability of a 2.4 ton Gd organic liquid scintillator target for antineutrino detection

In this work we report the performances and the chemical and physical properties of a (2 x 1.2) ton organic liquid scintillator target doped with Gd up to ~0.1%, and the results of a 2 year long stability survey. In particular we have monitored the amount of both Gd and primary fluor actually in solution, the optical and fluorescent properties of the Gd-doped liquid scintillator (GdLS) and its performances as a neutron detector, namely neutron capture efficiency and average capture time. The experimental survey is ongoing, the target being continuously monitored. After two years from the doping time the performances of the Gd-doped liquid scintillator do not show any hint of degradation and instability; this conclusion comes both from the laboratory measurements and from the "in-tank" measurements. This is the largest stable Gd-doped organic liquid scintillator target ever produced and continuously operated for a long period

Communication research between working capacity of hardalloy cutting tools and fractal dimension of their wear

The results of communication research between the wear resistance of the Kapplicability hard-alloy cutting tools and the fractal dimension of the wear surface,which is formed on a back side of the cutting edge when processing the materialsshowing high adhesive activity are presented in the paper. It has been established thatthe wear resistance of tested cutting tools samples increases according to a fractaldimension increase of their wear surface

Combined use of plasmid drug pCMV-VEGFA and autodermoplasty for stimulation of skin defects healing in the experiment

© 2018 Human Stem Cell Institute. All rights reserved. To find effective ways to stimulate chronic skin wounds healing (including deep burns, diabetic and trophic ulcers) is an actual multidisciplinary task. The aim of our study was to assess the potential of using autodermoplasty in combination with plasmid drug pCMV-VEGFA to optimize skin defects repair in the experiment. Autodermoplasty was performed on Wistar rats. The size of the skin flap was 22 cm. Immediately after surgery the animals of the test group (n=8) underwent intradermal injection in the periphery of autotransplant with 1 ml solution containing 0.3 mg of supercoiled plasmid DNA pCMV-VEGFA, rats of the control group (n=8) received 1 ml of 0.9 % NaCl. The results were analyzed in 3, 6, 9 12, 18 days using macroscopic evaluation, laser Doppler flowmetry, histological methods. Macroscopically in the test group necrosis of the transplanted skin flap was found at later periods of observation, in one case complete survival of autotransplant was observed. The results of laser Doppler flowmetry in the group with plasmid DNA did not have statistically significant differences with control. The wound defect diameter in the test group at 12 days was 5,52± 4.80 mm, in the control 12,45±0,82 mm (p=0,03); 2,53±of 2,94 mm and 4,23±3,5 mm (p=0,067) at 18 days, respectively. At 18 days, the average number of vessels under the flap in the central zone were: of 26±2,9 in the test group and 20±8 in control; it the peripheral zone 27±3,4 and of 12,1±3,9 (p=0,035), respectively; in the skin muscle 21,2±of 3,9 and 12,4±3,6 (p=0,04), respectively. Thus, the use of plasmid drug pCMV-VEGFA improved the skin healing after autodermoplasty

Retinoic acid inducible gene I Activates innate antiviral response against human parainfluenza virus type 3

Human parainfluenza virus type 3 (HPIV3) is a respiratory paramyxovirus that infects lung epithelial cells to cause high morbidity among infants and children. To date, no effective vaccine or antiviral therapy exists for HPIV3 and therefore, it is important to study innate immune antiviral response induced by this virus in infected cells. Type-I interferons (IFN, interferon-α/β) and tumor necrosis factor-α (TNFα activated by NFκB) are potent antiviral cytokines that play an important role during innate immune antiviral response. A wide-spectrum of viruses utilizes pattern recognition receptors (PRRs) like toll-like receptors (TLRs) and RLH (RIG like helicases) receptors such as RIGI (retinoic acid inducible gene -I) and Mda5 to induce innate antiviral response. Previously it was shown that both TNFα and IFNβ are produced from HPIV3 infected cells. However, the mechanism by which infected cells activated innate response following HPIV3 infection was not known. In the current study, we demonstrated that RIGI serves as a PRR in HPIV3 infected cells to induce innate antiviral response by expressing IFNβ (via activation of interferon regulatory factor-3 or IRF3) and TNFα (via activation of NF-κB)

Effects of Nitrogen contamination in liquid Argon

A dedicated test of the effects of Nitrogen contamination in liquid Argon has been performed at the INFN-Gran Sasso Laboratory (LNGS, Italy) within the WArP R&D program. A detector has been designed and assembled for this specific task and connected to a system for the injection of controlled amounts of gaseous Nitrogen into the liquid Argon. Purpose of the test is to detect the reduction of the Ar scintillation light emission as a function of the amount of the Nitrogen contaminant injected in the Argon volume. A wide concentration range, spanning from about 10^-1 ppm up to about 10^3 ppm, has been explored. Measurements have been done with electrons in the energy range of minimum ionizing particles (gamma-conversion from radioactive sources). Source spectra at different Nitrogen contaminations are analyzed, showing sensitive reduction of the scintillation yield at increasing concentrations. The rate constant of the light quenching process induced by Nitrogen in liquid Ar has been found to be k(N2)=0.11 micros^-1 ppm^-1. Direct PMT signals acquisition at high time resolution by fast Waveform recording allowed to extract with high precision the main characteristics of the scintillation light emission in pure and contaminated LAr. In particular, the decreasing behavior in lifetime and relative amplitude of the slow component is found to be appreciable from O(1 ppm) of Nitrogen concentrations

Biological decolorization of xanthene dyes by anaerobic granular biomass

Biodegradation of a xanthene dyes was investigated for the first time using anaerobic granular sludge. On a first screening, biomass was able to decolorize, at different extents, six azo dye solutions: acid orange 7, direct black 19, direct blue 71, mordant yellow 10, reactive red 2 and reactive red 120 and two xanthene dyes—Erythrosine B and Eosin Y. Biomass concentration, type of electron donor, induction of biomass with dye and mediation with activated carbon (AC) were variables studied for Erythrosine B (Ery) as model dye. Maximum color removal efficiency was achieved with 4.71 g VSS L−1, while the process rates were independent of the biomass concentration above 1.89 g VSS L−1. No considerable effects were observed when different substrates were used as electron donors (VFA, glucose or lactose). Addition of Ery in the incubation period of biomass led to a fivefold increase of the decolorization rate. The rate of Ery decolorization almost duplicated in the presence of commercial AC (0.1 g L−1 AC0). Using different modified AC samples (from the treatment of AC0), a threefold higher rate was obtained with the most basic one, \textAC\textH2ACH2, as compared with non-mediated reaction. Higher rates were obtained at pH 6.0. Chemical reduction using Na2S confirmed the recalcitrant nature of this dye. The results attest that decolorization of Ery is essentially due to enzymatic and adsorption phenomena.This work was supported by the PTDC/AMB/69335/2006 project grants (Fundacao para a Ciencia e Technologia, FCT, Portugal), BRAIN project (ID 6681, European Social Found and Romanian Government and the grant of the Romanian National Authority for Scientific Research, CNCS-UEFISCDI, project number PN-II-ID-PCE-2011-3-0559, Contract 265/2011

Fizikalni mehanizmi i metode u tumorskim terapijama i prijenosu lijekova do tumora

In addition to several well-known drug delivery strategies developed to facilitate effective chemotherapy with anticancer agents, some new approaches have been recently established, based on specific effects arising from the applications of ultrasound, magnetic and electric fields on drug delivery systems. This paper gives an overview of newly developed methods of drug delivery to tumors and of the related anticancer therapies based on the combined use of different physical methods and specific drug carriers. The conventional strategies and new approaches have been put into perspective to revisit the existing and to propose new directions to overcome the threatening problem of cancer diseases.Osim dobro poznatih metoda prijenosa lijekova u kemoterapijskom pristupu liječenja tumora, nedavno su otkriveni novi načini prijenosa koji se zasnivaju na specifičnim mehanizmima uzrokovanim upotrebom ultrazvuka, magnetskih i električnih polja. Članak sadrži prikaz fizikalnih mehanizama na kojima se temelje ove nove metode, kao i pregled novootkrivenih prijenosnika lijekova (Pluronske micele, magnetoliposomi, magnetski fluidi), novih terapija tumora (magnetska hipertermija, elektrokemoterapija) i najnovijih istraživanja temeljenih na fizikalnom pristupu ovoj problematici