45 research outputs found
Direct evidence that twisted flux tube emergence creates solar active regions
The magnetic nature of the formation of solar active regions lies at the heart of understanding solar activity and, in particular, solar eruptions. A widespread model, used in many theoretical studies, simulations and the interpretation of observations, is that the basic structure of an active region is created by the emergence of a large tube of pre-twisted magnetic field. Despite plausible reasons and the availability of various proxies suggesting the accuracy of this model, there has not yet been a methodology that can clearly and directly identify the emergence of large pre-twisted magnetic flux tubes. Here, we present a clear signature of the emergence of pre-twisted magnetic flux tubes by investigating a robust topological quantity, called magnetic winding, in solar observations. This quantity detects the emerging magnetic topology despite the significant deformation experienced by the emerging magnetic field. Magnetic winding complements existing measures, such as magnetic helicity, by providing distinct information about field line topology, thus allowing for the direct identification of emerging twisted magnetic flux tubes
Desenvolvimento inicial de Urochloa ruziziensis e desempenho agronĂŽmico da soja em diferentes arranjos espaciais no cerrado Mato-Grossense
PROFIL WISATAWAN MUSEUM RADYA PUSTAKA SURAKARTA
Anggit Margaret, C9407031 2011. Profil Wisatawan Museum
Radya Pustaka Surakarta. Program Studi Diploma III Usaha Perjalanan
Wisata Fakultas Sastra Dan Seni Rupa Universitas Sebelas Maret Surakarta.
Penelitian tugas akhir ini mengkaji tentang Profil Wisatawan di
Museum Radya Pustaka Surakarta. Tujuan dari penelitian ini adalah untuk
mengetahui dari daerah mana saja wisatawan yang berkunjung ke Museum
Radya Pustaka, bagaimana ciri-ciri wisatawan yang berkunjung ke Museum
Radya Pustaka serta harapan-harapan yang diinginkan wisatawan terhadap
Museum Radya Pustaka.
Penelitian dilakukan dengan metode kualitatif. Pengumpulan data
dilakukan melalui wawancara dengan narasumber wisatawan yang berkujung
di Museum Radya Pustaka Surakarta tempat penulis melakukan penelitian,
serta studi pustaka dan studi dokumen guna menambah sumber data.
Hasil penelitian menunjukkan bahwa (1) Sebagian besar wisatawan
yang datang berasal dari Semarang sebesar 32%. (2) Mayoritas wisatawan
yang berkunjung ke Museum Radya Pustaka berusia antara 17-25 tahun dan
kebanyakan dari mereka adalah pelajar atau mahasiswa dengan prosentase
52%. (3) Sebagian besar wisatawan yang datang ke Museum Radya Pustaka
adalah bertujuan untuk melakukan penelitian yaitu sebesar 34%. (4) Harapan
wisatawan yang berkunjung terhadap kelangsungan Museum Radya Pustaka
sebagian besar adalah agar ditingkatkan lagi pengelolaan dan keamanan
museum, agar kejadian hilangnya benda-benda koleksi museum tidak terulang
lagi dikemudian hari.
Kesimpulan dari hasil penelitian ini bahwa wisatawan yang berkujung
ke Museum Radya Pustaka Surakarta mayoritas berasal dari Semarang,
mayoritas berusia 17-25 tahun dan kebanyakan dari mereka adalah berprofesi
sebagai pelajar dan mahasiswa. Kebanyakan wisatawan yang datang bertujuan
untuk melakukan penelitian, serta harapan wisatawan terhadap Museum
Radya Pustaka adalah supaya lebih ditingkatkan lagi pengelolaan dan
keamanan museum
The transduction of light signals controlling floral, induction in Pharbitis nil
SIGLEAvailable from British Library Document Supply Centre- DSC:DXN003433 / BLDSC - British Library Document Supply CentreGBUnited Kingdo
Studies for the PRISM FFAG Ring for the Next Generation Muon to Electron Conversion Experiment
High intensity and high quality muon beams are needed
for next generation lepton flavour violation experiments.
Such beams can be produced by sending a short proton
pulse to a pion production target, capturing the pions and
performing RF phase rotation on the resulting muon beam
in an FFAG ring. Such a solution was proposed for the
PRISM project and this paper summarizes its current
status. In particular the PRISM task force was created to
address the accelerator and detector issues that need to be
solved in order to realise the PRISM experiment.
Alternative designs for the PRISM FFAG ring are
discussed and their performance compared. The
injection/extraction systems and matching to the solenoid
channels upstream and downstream of the FFAG ring are
presented. The future direction for the study will be
outlined
Status of the PRISM FFAG Design for the Next Generation Muon-to-Electron Conversion Experiment
The PRISM Task Force continues to study high
intensity and high quality muon beams needed for next
generation lepton flavour violation experiments. In the
PRISM case such beams have been proposed to be
produced by sending a short proton pulse to a pion
production target, capturing pions and performing RF
phase rotation on the resulting muon beam in an FFAG
ring. This paper summarizes the current status of the
PRISM design obtained by the Task Force. In particular
various designs for the PRISM FFAG ring are discussed
and their performance compared to the baseline one, the
injection/extraction systems and matching to the solenoid
channels upstream and downstream of the FFAG ring are
presented. The feasibility of the construction of the
PRISM system is discussed
SYMPTOMS INDICATIVE OF INFLAMMATORY ARTHRITIS ARE COMMON IN THE PRIMARY CARE POPULATION: FINDINGS FROM THE SYMPTOMS IN PERSONS AT RISK OF RHEUMATOID ARTHRITIS SURVEY
Pathophysiology and treatment of rheumatic disease
Mood, mileage and the menstrual cycle
Forty women took part in a study to determine the effects of high-intensity training and the menstrual cycle on mood states. Half of the sample were competitive distance runners following a training load of between 50 km and 130 km running per week. Seven athletes were amenorrhoeic and 13 either eumenorrhoeic or oligomenorrhoeic. The remaining 20 subjects were inactive women who menstruated regularly. The mean age of all 40 subjects was 29 years. Each subject completed two identical Profile of Mood States (POMS) questionnaires. The 33 menstruating subjects completed both a premenstrual and a midcycle form and the amenorrhoeic athletes completed the questionnaires at a 3-week interval, which acted as a control for the potential effects of premenstrual syndrome (PMS) among the menstruating females. Results showed highly significant differences in mood profiles among amenorrhoeic athletes, non-amenorrhoeic athletes and inactive women. The greatest difference was between premenstrual and midcycle measures for the inactive group. PMS appears to cause marked negative mood swings among menstruating women which the POMS inventory is sensitive in detecting. While the lowerintensity- training runners appeared to benefit psychologically from a training distance of approximately 50km week-', high-intensity training had an adverse effect on mood
Effects of short-term therapy with glibenclamide and repaglinide on incretin hormones and oxidative damage associated with postprandial hyperglycaemia in people with type 2 diabetes mellitus
<p><b>Aim:</b> To examine the effects of glibenclamide and repaglinide on glucose stimulated insulin release, incretins, oxidative stress and cell adhesion molecules in patients with type 2 diabetes suboptimally treated with metformin.</p>
<p><b>Methods:</b> A randomized clinical trial was performed recruiting 27 subjects (HbA1c between 7.5 and 10.5%) free from cardiovascular and renal disease. Glucose, insulin, C-peptide, glucagon-like peptide-1 (GLP-1), glucose-dependent insulinotropic peptide (GIP), total antioxidant status, F2-isoprostane, interleukin-6 and cell adhesion molecules were measured during an oral glucose load at baseline and after eight weeks of treatment. The areas under the curve were analysed at 45, 60 and 120 min (AUC45, AUC60, AUC120).</p>
<p><b>Results:</b> Significant improvements in glucose were observed with repaglinide (HBA1c: â1.5%, fasting glucose: â2.8 mmol/L, 2-h glucose: â3.7 mmol/L, AUC120: â18.9%) and glibenclamide (â1.0%, â2.2 mmol/L, â2.5 mmol/L, â17.5%). Repaglinide was also associated with an increase in the AUC60 and AUC120 for insulin (+56%, +61%) and C-peptide (+41%, +36%). GLP-1, GIP, IL-6, ICAM-1 and E-selectin levels did not change in either group. No association was observed between GLP-1, GIP-1 and plasma markers of oxidative stress.</p>
<p><b>Conclusion:</b> Repaglinide is associated with improved postprandial glycaemic control via insulin and C-peptide release. We observed no direct effects of glibenclamide or repaglinide on plasma levels of GLP-1 or GIP. We observed no associations of GLP-1 and GIP with plasma markers of oxidative stress.</p>