518 research outputs found
Killing the cMSSM softly
We investigate the constrained Minimal Supersymmetric Standard Model (cMSSM)
in the light of constraining experimental and observational data from precision
measurements, astrophysics, direct supersymmetry searches at the LHC and
measurements of the properties of the Higgs boson, by means of a global fit
using the program Fittino. As in previous studies, we find rather poor
agreement of the best fit point with the global data. We also investigate the
stability of the electro-weak vacuum in the preferred region of parameter space
around the best fit point. We find that the vacuum is metastable, with a
lifetime significantly longer than the age of the Universe. For the first time
in a global fit of supersymmetry, we employ a consistent methodology to
evaluate the goodness-of-fit of the cMSSM in a frequentist approach by deriving
p-values from large sets of toy experiments. We analyse analytically and
quantitatively the impact of the choice of the observable set on the p-value,
and in particular its dilution when confronting the model with a large number
of barely constraining measurements. Finally, for the preferred sets of
observables, we obtain p-values for the cMSSM below 10%, i.e. we exclude the
cMSSM as a model at the 90% confidence level.Comment: 22 pages, 16 figures, to be submitted to EPJ
Green energy in the service of mankind
This paper presents the project called “Vetrosvet” that has been carried out in Tomsk region by students of Tomsk Polytechnic University. This project has a great value as it is focused on popularizing green energy and renewable sources in Russia and, mainly, in the Tomsk region. Tomsk region is known as a center of innovation technology. That is why the region has been chosen for caring out the project. Moreover, the usage of wind turbines is more effective than solar panels in this region. It can be explained by the small amount of sunny days in Siberian region. The wind turbines are put together in the development laboratory at Tomsk Polytechnic University. The results of this project are presented in this paper
Rote Liste und Artenverzeichnis der Laufkäfer Baden-Württembergs : (Coleoptera: Carabidae)
Vor über 10 Jahren wurde die erste Fassung einer Roten Liste und Checkliste gefährdeter Laufkäferarten Baden-Württembergs publiziert (TRAUTNER 1992), eine zweite Fassung, getrennt in Rote Liste und Artenverzeichnis, folgte 1996 (TRAUTNER 1996a, TRAUTNER & BRÄUNICKE 1996). Seit dieser Zeit hat sich der Kenntnisstand zu Verbreitung, Habitatansprüchen und Gefährdungssituation der Laufkäferarten in Baden-Württemberg wesentlich verbessert. Eine Neufassung der Roten Liste als wichtiges Instrument für die Praxis in Naturschutz und Landschaftsplanung war daher dringend erforderlich
Analysis of the circadian transcriptome of the Antarctic krill Euphausia superba
Antarctic krill (Euphausia superba) is a high latitude pelagic organism which plays a central role in the Southern Ocean ecosystem. E. superba shows daily and seasonal rhythms in physiology and behaviour, which are synchronized with the environmental cycles of its habitat. Recently, the main components of the krill circadian machinery have been identified and characterized. However, the exact mechanisms through which the endogenous timing system operates the control and regulation of the overt rhythms remains only partially understood. Here we investigate the involvement of the circadian clock in the temporal orchestration of gene expression by using a newly developed version of a krill microarray platform. The analysis of transcriptome data from krill exposed to both light-dark cycles (LD 18:6) and constant darkness (DD), has led to the identification of 1,564 putative clock-controlled genes. A remarkably large proportion of such genes, including several clock components (clock, period, cry2, vrille, and slimb), show oscillatory expression patterns in DD, with a periodicity shorter than 24\u2009hours. Energy-storage pathways appear to be regulated by the endogenous clock in accordance with their ecological relevance in daily energy managing and overwintering. Our results provide the first representation of the krill circadian transcriptome under laboratory, free-running conditions
Информационная система учета и контроля выполнения работ автосервиса
Работа направлена на автоматизацию процессов по работе с клиентами автосервиса. Основной функционал – онлайн-запись, автоматический расчет сроков выполнения работ, хранение истории выполненных работ, отслеживание хода выполнения заказов, накопление и хранение данных о клиентах и их автомобилях, автоматическая генерация документации по заказ-нарядам и т.д.The work is aimed at automating the processes of working with customers of the service station. The main functionality - online recording, automatic calculation of terms, storage of history of work performed, tracking the execution of orders, accumulation and storage of data on customers and their cars, automatic generation of documentation on orders
Pharmacoproteomic characterisation of human colon and rectal cancer
Most molecular cancer therapies act on protein targets but data on the proteome status of patients and cellular models for proteome-guided pre-clinical drug sensitivity studies are only beginning to emerge. Here, we profiled the proteomes of 65 colorectal cancer (CRC) cell lines to a depth of > 10,000 proteins using mass spectrometry. Integration with proteomes of 90 CRC patients and matched transcriptomics data defined integrated CRC subtypes, highlighting cell lines representative of each tumour subtype. Modelling the responses of 52 CRC cell lines to 577 drugs as a function of proteome profiles enabled predicting drug sensitivity for cell lines and patients. Among many novel associations, MERTK was identified as a predictive marker for resistance towards MEK1/2 inhibitors and immunohistochemistry of 1,074 CRC tumours confirmed MERTK as a prognostic survival marker. We provide the proteomic and pharmacological data as a resource to the community to, for example, facilitate the design of innovative prospective clinical trials. © 2017 The Authors. Published under the terms of the CC BY 4.0 licens
Left ventricular diastolic dysfunction in Nrf2 knock out mice is associated with cardiac hypertrophy, decreased expression of SERCA2a, and preserved endothelial function
AbstractIncreased production of reactive oxygen species and failure of the antioxidant defense system are considered to play a central role in the pathogenesis of cardiovascular disease. The transcription factor nuclear factor (erythroid-derived 2)-like 2 (Nrf2) is a key master switch controlling the expression of antioxidant and protective enzymes, and was proposed to participate in protection of vascular and cardiac function. This study was undertaken to analyze cardiac and vascular phenotype of mice lacking Nrf2. We found that Nrf2 knock out (Nrf2 KO) mice have a left ventricular (LV) diastolic dysfunction, characterized by prolonged E wave deceleration time, relaxation time and total diastolic time, increased E/A ratio and myocardial performance index, as assessed by echocardiography. LV dysfunction in Nrf2 KO mice was associated with cardiac hypertrophy, and a downregulation of the sarcoplasmic reticulum Ca2+-ATPase (SERCA2a) in the myocardium. Accordingly, cardiac relaxation was impaired, as demonstrated by decreased responses to β-adrenergic stimulation by isoproterenol ex vivo, and to the cardiac glycoside ouabain in vivo. Surprisingly, we found that vascular endothelial function and endothelial nitric oxide synthase (eNOS)-mediated vascular responses were fully preserved, blood pressure was decreased, and eNOS was upregulated in the aorta and the heart of Nrf2 KO mice. Taken together, these results show that LV dysfunction in Nrf2 KO mice is mainly associated with cardiac hypertrophy and downregulation of SERCA2a, and is independent from changes in coronary vascular function or systemic hemodynamics, which are preserved by a compensatory upregulation of eNOS. These data provide new insights into how Nrf2 expression/function impacts the cardiovascular system
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Shotgun Lipidomics Discovered Diurnal Regulation of Lipid Metabolism Linked to Insulin Sensitivity in Nondiabetic Men.
CONTEXT: Meal timing affects metabolic homeostasis and body weight, but how composition and timing of meals affect plasma lipidomics in humans is not well studied. OBJECTIVE: We used high throughput shotgun plasma lipidomics to investigate effects of timing of carbohydrate and fat intake on lipid metabolism and its relation to glycemic control. DESIGN: 29 nondiabetic men consumed (1) a high-carb test meal (MTT-HC) at 09.00 and a high-fat meal (MTT-HF) at 15.40; or (2) MTT-HF at 09.00 and MTT-HC at 15.40. Blood was sampled before and 180 minutes after completion of each MTT. Subcutaneous adipose tissue (SAT) was collected after overnight fast and both MTTs. Prior to each investigation day, participants consumed a 4-week isocaloric diet of the same composition: (1) high-carb meals until 13.30 and high-fat meals between 16.30 and 22:00 or (2) the inverse order. RESULTS: 12 hour daily lipid patterns showed a complex regulation by both the time of day (67.8%) and meal composition (55.4%). A third of lipids showed a diurnal variation in postprandial responses to the same meal with mostly higher responses in the morning than in the afternoon. Triacylglycerols containing shorter and more saturated fatty acids were enriched in the morning. SAT transcripts involved in fatty acid synthesis and desaturation showed no diurnal variation. Diurnal changes of 7 lipid classes were negatively associated with insulin sensitivity, but not with glucose and insulin response or insulin secretion. CONCLUSIONS: This study identified postprandial plasma lipid profiles as being strongly affected by meal timing and associated with insulin sensitivity
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