An investigation into the interrelationship between petrophysical properties of potential gas shale reservoirs from Western Australia

An investigation into petrophysical properties of potential gas shales from the Perth and Canning Basins has been performed to understand the interrelationship between shale composition, geochemical properties and pore structural parameters. The following measurements were done on the samples:• Low pressure nitrogen adsorption and mercury porosimetry technique for determination of the pore structural properties,• Gas expansion method for determining the effective porosity,• High pressure methane adsorption for determination of the adsorbed gas capacity

SURVEI KEMAMPUAN TEKNIK DASAR PERMAINAN SEPAK BOLA PADA SISWA SDN PEMBINA LUWUK

Abstrak : Permasalahan dalam penelitian ini adalah bagaimana kemampuan teknik dasar permainan sepak bola pada siswa SDN Pembina Luwuk? Penelitian ini bertujuan untuk untuk mengetahui kemampuan teknik dasar permainan sepak bola pada siswa SDN Pembina Luwuk. Metode penelitian yang digunakan adalah metode observasi melalui survey langsung yang dilaksanakan di SDN Pembina Luwuk  Kabupaten Banggai tahun pelajaran 2012/2013 pada siswa putra yang berjumlah 30 orang siswa. Rancangan penelitian yang digunakan adalah penelitian deskriptif. Teknik pengumpulan data melalui tes unjuk kerja untuk memperoleh/mengukur kemampuan teknik dasar permainan sepak bola, yang meliputi tes menendang bola, tes menerima/menahan bola dan tes menggiring bola. Hasil Penelitian menunjukkan hasil tes kemampuan menendang bola dalam permainan sepak bola, diperoleh hasil rata-rata secara individu sebesar 78,21 dari 30 orang siswa. Sementara prosentase ketuntasan hasil belajar menendang bola secara klasikal diperoleh 63,33% atau 19 orang siswa yang memiliki kemampuan menendang bola dalam permainan sepak bola yang cukup baik. 11 orang siswa atau 36,67% siswa yang belum memiliki kemampuan menendang bola dengan baik dan benar Kata Kunci : Survei, teknik dasar permainan sepak bol

Accretion disc-corona and jet emission from the radio-loud narrow-line Seyfert 1 galaxy RX J1633.3+4719

We perform X-ray/ultraviolet (UV) spectral and X-ray variability studies of the radio-loud narrow-line Seyfert 1 (NLS1) galaxy RX J1633.3+4719 using XMM-Newton and Suzaku observations from 2011 and 2012. The 0.3-10 keV spectra consist of an ultrasoft component described by an accretion disc blackbody (kT_in = 39.6^{+11.2}_{-5.5} eV) and a power law due to the thermal Comptonization ({\Gamma} = 1.96^{+0.24}_{-0.31}) of the disc emission. The disc temperature inferred from the soft excess is at least a factor of 2 lower than that found for the canonical soft excess emission from radio-quiet NLS1s. The UV spectrum is described by a power law with photon index 3.05^{+0.56}_{-0.33}. The observed UV emission is too strong to arise from the accretion disc or the host galaxy, but can be attributed to a jet. The X-ray emission from RX J1633.3+4719 is variable with fractional variability amplitude $F_{\rm var}$=13.5$\pm1.0$ per cent. In contrast to radio-quiet active galactic nuclei (AGN), X-ray emission from the source becomes harder with increasing flux. The fractional rms variability increases with energy and the rms spectrum is well described by a constant disc component and a variable power-law continuum with the normalization and photon index being anticorrelated. Such spectral variability cannot be caused by variations in the absorption and must be intrinsic to the hot corona. Our finding of possible evidence for emission from the inner accretion disc, jet and hot corona from RX J1633.3+4719 in the optical to X-ray bands makes this object an ideal target to probe the disc-jet connection in AGN.Comment: 12 pages, 11 figures, 3 tables, Published in MNRA

Homogenization of a capillary phenomena

We study the height of a liquid in a tube when it contains a great number of thin vertical bars and when its border is finely strained. For this, one uses an epi-convergence method

Detection of the high energy cut-off from the Seyfert 1.5 galaxy NGC 5273

We perform the NuSTAR and Swift/XRT joint energy spectral fitting of simultaneous observations from the broad-line Seyfert 1.5 galaxy NGC 5273. When fitted with the combination of an exponential cut-off power-law and a reflection model, a high energy cut-off is detected at 143$^{+96}_{-40}$ keV with 2-sigma significance. Existence of such cut-off is also consistent with the observed Comptonizing electron temperature when fitted with a Comptonization model independently. We observe a moderate hard X-ray variability of the source over the time-scale of ~12 years using INTEGRAL/ISGRI observations in the energy range of 20-100 keV. When the hard band count rate (6-20 keV) is plotted against the soft band count rate (3-6 keV), a hard offset is observed. Our results indicate that the cut-off energy may not correlate with the coronal X-ray luminosity in a simple manner. Similarities in parameters that describe coronal properties indicate that the coronal structure of NGC 5273 may be similar to that of the broad-line radio galaxy 3C 390.3 and another galaxy MCG-5-23-16 where the coronal plasma is dominated by electrons, rather than electron-positron pairs. Therefore, the coronal cooling is equally efficient to the heating mechanism keeping the cut-off energy at low even at the low accretion rate.Comment: 11 pages, 6 figures, 1 table, accepted for publication in MNRA

Sheehans syndrome: the hidden nemesis

Sheehan’s syndrome is the name given to postpartum hypopituitarism, usually precipitated by massive uterine haemorrhage and hypovolemic shock during or after childbirth resulting into pituitary injury in varying degrees. Most cases are diagnosed very late in life and the first presentation may be a life-threatening situation like shock or cardiorespiratory collape. This hidden nemesis in women compromises their quality of life and may result into mortality if not suspected early. In this article we present 3 patients who presented in the ICU in a state of complete cardio-respiratory collapse and later discharged in full health

Reliability of diabetic neuropathy symptom and diabetic neuropathy examination scoring system for the diagnosis of diabetic peripheral neuropathy in type 2 diabetes mellitus patients

Background: This study aims to evaluate the reliability of the Diabetic Neuropathy Examination Score (DNE), 10-g Semmes-Weinstein Monofilament Examination and Quantitative Sensory Testing by Vibration Perception Threshold (VPT) in the diagnosis of diabetic polyneuropathy and seek a cost effective and reliable screening method in diabetic OPD and IPD against the gold standard of NCV.Methods: This study was carried out in 50 confirmed type 2 diabetic patients matched for age, sex, duration and ABI >0.9 irrespective of the presenting complaints. Patients with either limb amputation, other reasons for peripheral neuropathy, ABI <0.9, critical and comatose were excluded. A complete neurological assessment using a symptom questionnaire, Semmes Weinstein monofilament, vibration and thermal threshold perception analyzer was done and recorded. A score was given out of 20. The patients were retrograde subjected to NCV by a blinded technician and the readings were then compared to the scores.Results: The level of significance between the total neuropathy score and the presence of neuropathy (by NCV) was very significant (p<0.0001) with an association of 0.932. In patients with a mean total neuropathy score of 3.28,10.80 and 15.37, there was no, mild and severe levels of neuropathy in NCV respectively.Conclusions: There is correlation between the total neurological scores and NCV. Therefore, it can be used to screen all diabetic patients for earliest signs of diabetic neuropathy with sustainable results

Vitamin B 12: the hidden ingredient of stroke

Background: Study aimed to evaluate the relationship between vitamin B12 and acute cerebral stroke in this study.Methods: Blood samples drawn within 24 hours after the stroke from hospitalized patients (n=100) and from 100 control cases matched for age, sex and other modifiable risk factors of stroke were analyzed. With a competitive, ECLIA, serum levels of vitamin B12 were measured. The quantitative data of the groups was compared using Analysis of Varience and Tukeys HSD post hoc test for comparison. Chi-square tests were used.Results: Median serum vitamin B12 levels were significantly lower in the patients than in the control subjects, 188.71 and 256.25 pg/ml respectively (p=0.0001). This difference was independent from other risk factors. The mean age in case group was 62.49 (SD: 12.45 years) and 56.62 (SD: 13.05 years) in control group with p=0.001. Therefore, prevalence of stroke is more between 6th and 7th decade of life. Mean serum vitamin B12 levels were lower in males (201.8pg/ml) than the females (268.pg/ml) in the case group.Conclusions: Low vitamin B12 is associated with an increased risk of stroke, and its relationship is independent from the other known modifiable stroke risk factors