643 research outputs found

    Kota Qom Sebagai Pusat Pendidikan Madzhab Syi’ah: Sejarah dan Perkembangannya

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    Sensitive issues of the mazhaban between Sunni and Shi'a are increasingly rife in filling the information space of Indonesian society, especially after the outbreak of the Syrian Civil War. In addition, Indonesian students who graduated from the city of Qom, Iran, are considered to be the newest generation of Shiites who have a mission to spread syi'ahism and are often in conflict with other groups. This paper attempts to answer the formulation of the problem, "how is the history and development of the City of Qom as a center for Shi'a school of education in Iran?" The writing methodology used is based on a qualitative approach through historical investigations by conducting documentation data collection studies. This research proves that Qom has become an important Shiite base in Persia since many Alawites (descendants of Ali bin Abi Talib) migrated in the early centuries of Islamic times. Then, between the 9th and 10th centuries, two important sites for Shi'ite pilgrimage stood, namely the Tomb of Fatima Ma'shumah and the Jamkaran Mosque. In the same range, the Fuqaha of the Early Shi'a generation lived here, namely Shaykh Shaduq and Shaykh Al-Kulaini. However, Qom's vital role strengthened in the Safavid to Qajar periods between the 16th and 19th centuries with the Feiziyeh Madrasa as its icon. Shi'ite philosophers also worked there, including Mulla Shadra and Mulla Al-Razzaq Lahiji. Although weakened in the early 20th century, Ayatollah Haeri Yazdi's role in establishing the Qom Scholars' Seminary/Seminary in 1922 marked an advance that even rivaled Najaf as a center for Shi'i education. Ayatollah Khomeini was a major figure who graduated from that school which made Qom the base of the 1979 Iranian Revolution. Until now, this city has been taken into account in Islamic education.Isu-isu sensitif kemadzhaban antara Sunni dan Syi'ah kian marak memenuhi ruang informasi masyarakat Indonesia terutama pasca meletusnya Perang Saudara Suriah. Selain itu, para mahasiswa Indonesia lulusan Kota Qom, Iran, dianggap sebagai generasi Syi'ah terbaru yang memiliki misi menyebarkan kesyi'ahan dan kerap berkonflik dengan kelompok lain. Tulisan ini berusaha menjawab rumusan masalah, "bagaimana sejarah dan perkembangan Kota Qom sebagai pusat pendidikan madzhab Syi’ah di Iran ?." Metodologi penulisan yang dipakai ialah berdasarkan pendekatan kualitatif melalui penyelidikan historik dengan melakukan studi pengumpulan data dokumentasi. Penelitian ini membuktikan bahwa Qom telah menjadi basis penting kesyi'ahan di Persia sejak banyak Kaum Alawi (keturunan Ali bin Abi Thalib) bermigrasi di awal abad masa keislaman. Kemudian antara abad ke-9 hingga ke-10 berdiri dua situs penting perziarahan Syi'ah yakni Makam Fathimah Ma'shumah dan Masjid Jamkaran. Pada rentang yang sama Fuqaha generasi Awal Syi'ah bermukim di sini yakni Syaikh Shaduq dan Syaikh Al-Kulaini. Namun peran vital Qom menguat di masa Safawi hingga Qajar antara abad ke-16 hingga ke-19 dengan Madrasah Feiziyeh sebagai ikonnya. Filsuf Syi'ah juga sempat berkarya di sana, antara lain Mulla Shadra dan Mulla Al-Razzaq Lahiji. Meski melemah di awal abad ke-20, peran Ayatollah Haeri Yazdi dalam membangun Hauzah Ilmiah / Seminari Qom pada 1922 menandai kemajuan yang bahkan menyaingi Najaf sebagai pusat pendidikan Syi'ah. Ayatollah Khomeini adalah tokoh besar lulusan sekolah itu yang menjadikan Qom sebagai basis Revolusi Iran 1979. Hingga sekarang kota ini diperhitungkan dalam pendidikan kesyi'ahan

    Pattern of Childhood Malignant Tumour in the Paediatric Surgery Department of Bangabandhu Sheikh Mujib Medical University

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    Background: Childhood malignancy is fast becoming an important paediatric problem in Bangladesh. They differ markedly from adult malignancy in their nature and distribution. This is a 5 years retrospective study of childhood malignant tumour as seen at the paediatric surgery department of Bangabandhu Sheikh Mujib Medical University (BSMMU). Objectives: The objective of this study is to determine the types of malignant patients admitted in the paediatric surgery department of BSMMU and also to know their age and sex distribution. Methods: This is a 5 years retrospective study from January 2005 to December 2009 in the paediatric surgery department of BSMMU, Dhaka, Bangladesh. All admitted malignant patients, aged up to 15 years diagnosed by means of histological or cytological examination included in this study. Results: Seventy (70) malignant patients were admitted during the study period, 65.7% patients were male and 34.3% patients were female with a male female ratio of 1.9:1. Fifty two (74.3%) patients were below 5 years and eighteen (25.7%) patients were between 5 to 15 years. The Wilms’ tumour was the most common malignant tumour which accounted for 42.8%. Hepatoblastoma was the second most common (24.2%). The other malignant tumours were neuroblastoma (15.7%), Non-Hodgkins lymphoma (5.7%), Rhabdomyosarcoma (4.2%), malignant fibrous histocytoma (1.4%), Fibroscarcoma (1.4%), Osteosarcoma (1.4%), malignant sacrococcygeal teratoma (1.4%), carcinoma of the rectum (1.4%0. Conclusion: Based on the result of this study, Wilms’ tumour is the commonest paediatric solid malignancy in our country. Carcinoma of the rectum may rarely occur in paediatric age group. Key words: Frequency; malignant solid tumor; children. DOI: http://dx.doi.org/10.3329/bsmmuj.v4i2.8638 BSMMU J 2011; 4(2):99-10

    Topological Crystalline Insulators in the SnTe Material Class

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    Topological crystalline insulators are new states of matter in which the topological nature of electronic structures arises from crystal symmetries. Here we predict the first material realization of topological crystalline insulator in the semiconductor SnTe, by identifying its nonzero topological index. We predict that as a manifestation of this nontrivial topology, SnTe has metallic surface states with an even number of Dirac cones on high-symmetry crystal surfaces such as {001}, {110} and {111}. These surface states form a new type of high-mobility chiral electron gas, which is robust against disorder and topologically protected by reflection symmetry of the crystal with respect to {110} mirror plane. Breaking this mirror symmetry via elastic strain engineering or applying an in-plane magnetic field can open up a continuously tunable band gap on the surface, which may lead to wide-ranging applications in thermoelectrics, infrared detection, and tunable electronics. Closely related semiconductors PbTe and PbSe also become topological crystalline insulators after band inversion by pressure, strain and alloying.Comment: submitted on Feb. 10, 2012; to appear in Nature Communications; 5 pages, 4 figure

    Status of Pandemic Influenza Vaccination and Factors Affecting It in Pregnant Women in Kahramanmaras, an Eastern Mediterranean City of Turkey

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    BACKGROUND: Pregnant women are a target group for receipt of influenza vaccine because there appears to be an elevated mortality and morbidity rate associated with influenza virus infection in pregnant women. The goal of this study is to determine the factors affecting the decisions of pregnant women in Turkey to be vaccinated or not for 2009 H1N1 influenza. METHODOLOGY: We enrolled 314 of 522 (60.2%) pregnant women who attended to the antenatal clinics of the Medical Faculty of Kahramanmaras Sutcuimam University's Department of Gynecology and Obstetrics between December 23, 2009, and February 1, 2010. We developed a 48-question survey which was completed in a face-to-face interview at the clinic with each pregnant woman. PRINCIPAL FINDINGS: Of the 314 pregnant women, 27.4% were in the first trimester, 33.8% were in the second trimester, and 38.8% were in the third trimester. Twenty-eight pregnant women (8.9%) got vaccinated. Of all the women interviewed, 68.5% stated that they were comfortable with their decisions about the vaccine, 7.3% stated they were not comfortable, and 24.2% stated that they were hesitant about their decisions. The probability of receiving the 2009 H1N1 vaccine was 3.46 times higher among working women than housewives, 1.85 times higher among women who have a child than those who do not, and 1.29 times higher among women with a high-school education or higher than those with only a secondary-school education and below. Correct knowledge about the minimal risks associated with receipt of influenza vaccine were associated with a significant increase in the probability of receiving the 2009 H1N1 vaccine. CONCLUSIONS/SIGNIFICANCE: The number of pregnant women in the study group who received the 2009 H1N1 vaccine was very low (8.9%) and two-thirds of them stated that they were comfortable with their decisions concerning the vaccine. Our results may have implications for public health measures to increase the currently low vaccination rate among pregnant women. Further studies are required to confirm whether our findings generalize to other influenza seasons and other settings

    Sustained release formulation of an anti-tuberculosis drug based on para-amino salicylic acid-zinc layered hydroxide nanocomposite

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    Background: Tuberculosis (TB), is caused by the bacteria, Mycobacterium tuberculosis and its a threat to humans since centuries. Depending on the type of TB, its treatment can last for 6-24 months which is a major cause for patients non-compliance and treatment failure. Many adverse effects are associated with the currently available TB medicines, and there has been no new anti-tuberculosis drug on the market for more than 50 year, as the drug development is very lengthy and budget consuming process.Development of the biocompatible nano drug delivery systems with the ability to minimize the side effects of the drugs, protection of the drug from enzymatic degradation. And most importantly the drug delivery systems which can deliver the drug at target site would increase the therapeutic efficacy. Nanovehicles with their tendency to release the drug in a sustained manner would result in the bioavalibilty of the drugs in the body for a longer period of time and this would reduce the dosing frequency in drug administration. The biocompatible nanovehicles with the properties like sustained release of drug of the target site, protection of the drug from physio-chemical degradation, reduction in dosing frequency, and prolong bioavailability of drug in the body would result in the shortening of the treatment duration. All of these factors would improve the patient compliance with chemotherapy of TB.Result: An anti-tuberculosis drug, 4-amino salicylic acid (4-ASA) was successfully intercalated into the interlamellae of zinc layered hydroxide (ZLH) via direct reaction with zinc oxide suspension. The X-ray diffraction patterns and FTIR analyses indicate that the molecule was successfully intercalated into the ZLH interlayer space with an average basal spacing of 24 Å. Furthermore, TGA and DTG results show that the drug 4-ASA is stabilized in the interlayers by electrostatic interaction. The release of 4-ASA from the nanocomposite was found to be in a sustained manner. The nanocomposite treated with normal 3T3 cells shows it reduces cell viability in a dose- and time-dependent manner.Conclusions: Sustained release formulation of the nanocomposite, 4-ASA intercalated into zinc layered hydroxides, with its ease of preparation, sustained release of the active and less-toxic to the cell is a step forward for a more patient-friendly chemotherapy of Tuberculosis

    Altered Neurocircuitry in the Dopamine Transporter Knockout Mouse Brain

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    The plasma membrane transporters for the monoamine neurotransmitters dopamine, serotonin, and norepinephrine modulate the dynamics of these monoamine neurotransmitters. Thus, activity of these transporters has significant consequences for monoamine activity throughout the brain and for a number of neurological and psychiatric disorders. Gene knockout (KO) mice that reduce or eliminate expression of each of these monoamine transporters have provided a wealth of new information about the function of these proteins at molecular, physiological and behavioral levels. In the present work we use the unique properties of magnetic resonance imaging (MRI) to probe the effects of altered dopaminergic dynamics on meso-scale neuronal circuitry and overall brain morphology, since changes at these levels of organization might help to account for some of the extensive pharmacological and behavioral differences observed in dopamine transporter (DAT) KO mice. Despite the smaller size of these animals, voxel-wise statistical comparison of high resolution structural MR images indicated little morphological change as a consequence of DAT KO. Likewise, proton magnetic resonance spectra recorded in the striatum indicated no significant changes in detectable metabolite concentrations between DAT KO and wild-type (WT) mice. In contrast, alterations in the circuitry from the prefrontal cortex to the mesocortical limbic system, an important brain component intimately tied to function of mesolimbic/mesocortical dopamine reward pathways, were revealed by manganese-enhanced MRI (MEMRI). Analysis of co-registered MEMRI images taken over the 26 hours after introduction of Mn^(2+) into the prefrontal cortex indicated that DAT KO mice have a truncated Mn^(2+) distribution within this circuitry with little accumulation beyond the thalamus or contralateral to the injection site. By contrast, WT littermates exhibit Mn^(2+) transport into more posterior midbrain nuclei and contralateral mesolimbic structures at 26 hr post-injection. Thus, DAT KO mice appear, at this level of anatomic resolution, to have preserved cortico-striatal-thalamic connectivity but diminished robustness of reward-modulating circuitry distal to the thalamus. This is in contradistinction to the state of this circuitry in serotonin transporter KO mice where we observed more robust connectivity in more posterior brain regions using methods identical to those employed here

    Visualizing the atomic scale electronic structure of the Ca2CuO2Cl2 Mott insulator

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    Although the mechanism of superconductivity in the cuprates remains elusive, it is generally agreed that at the heart of the problem is the physics of doped Mott insulators. The cuprate parent compound has one unpaired electron per Cu site, and is predicted by band theory to be a half-filled metal. The strong onsite Coulomb repulsion, however, prohibits electron hopping between neighboring sites and leads to a Mott insulator ground state with antiferromagnetic (AF) ordering. Charge carriers doped into the CuO2 plane destroy the insulating phase and superconductivity emerges as the carrier density is sufficiently high. The natural starting point for tackling high Tc superconductivity is to elucidate the electronic structure of the parent Mott insulator and the behavior of a single doped charge. Here we use a scanning tunneling microscope to investigate the atomic scale electronic structure of the Ca2CuO2Cl2 parent Mott insulator of the cuprates. The full electronic spectrum across the Mott-Hubbard gap is uncovered for the first time, which reveals the particle-hole symmetric and spatially uniform Hubbard bands. A single electron donated by surface defect is found to create a broad in-gap electronic state that is strongly localized in space with spatial characteristics intimately related to the AF spin background. The unprecedented real space electronic structure of the parent cuprate sheds important new light on the origion of high Tc superconductivity from the doped Mott insulator perspective.Comment: 26 pages, 4 figures, supplementary information include

    Tradeoff between Stability and Maneuverability during Whole-Body Movements

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    Understanding how stability and/or maneuverability affects motor control strategies can provide insight on moving about safely in an unpredictable world. Stability in human movement has been well-studied while maneuverability has not. Further, a tradeoff between stability and maneuverability during movement seems apparent, yet has not been quantified. We proposed that greater maneuverability, the ability to rapidly and purposefully change movement direction and speed, is beneficial in uncertain environments. We also hypothesized that gaining maneuverability comes at the expense of stability and perhaps also corresponds with decreased muscle coactivation.We used a goal-directed forward lean movement task that integrated both stability and maneuverability. Subjects (n = 11) used their center of pressure to control a cursor on a computer monitor to reach a target. We added task uncertainty by shifting the target anterior-posterior position mid-movement. We used a balance board with a narrow beam that reduced the base of support in the medio-lateral direction and defined stability as the probability that subjects could keep the balance board level during the task.During the uncertainty condition, subjects were able to change direction of their anterior-posterior center of pressure more rapidly, indicating that subjects were more maneuverable. Furthermore, medio-lateral center of pressure excursions also approached the edges of the beam and reduced stability margins, implying that subjects were less stable (i.e. less able to keep the board level). On the narrow beam board, subjects increased muscle coactivation of lateral muscle pairs and had greater muscle activity in the left leg. However, there were no statistically significant differences in muscle activity amplitudes or coactivation with uncertainty.These results demonstrate that there is a tradeoff between stability and maneuverability during a goal-directed whole-body movement. Tasks with added uncertainty could help individuals learn to be more maneuverable yet sufficiently stable

    Evaluation of Brain Iron Content Based on Magnetic Resonance Imaging (MRI): Comparison among Phase Value, R2* and Magnitude Signal Intensity

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    Background and Purpose: Several magnetic resonance imaging (MRI) techniques are being exploited to measure brain iron levels increasingly as iron deposition has been implicated in some neurodegenerative diseases. However, there remains no unified evaluation of these methods as postmortem measurement isn’t commonly available as the reference standard. The purpose of this study was to make a comparison among these methods and try to find a new index of brain iron. Methods: We measured both phase values and R2 * in twenty-four adults, and performed correlation analysis among the two methods and the previously published iron concentrations. We also proposed a new method using magnitude signal intensity and compared it with R2 * and brain iron. Results: We found phase value correlated with R2 * in substantia nigra (r = 20.723, p,0.001) and putamen (r = 20.514, p = 0.010), while no correlations in red nucleus (r = 20.236, p = 0.268) and globus pallidus (r = 20.111, p = 0.605). And the new magnitude method had significant correlations in red nucleus (r = 20.593, p = 0.002), substantia nigra (r = 20.521, p = 0.009), globus pallidus (r = 20.750, p,0.001) and putamen (r = 20.547, p = 0.006) with R2*. A strong inverse correlation was also found between the new magnitude method and previously published iron concentrations in seven brain regions (r = 20.982, P,0.001). Conclusions: Our study indicates that phase value may not be used for assessing the iron content in some brain region

    Evaluating environmental tobacco smoke exposure in a Group of turkish primary school students and developing intervention methods for prevention

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    <p>Abstract</p> <p>Background</p> <p>In countries like Turkey where smoking is highly prevalent, children's exposure to tobacco smoke is an important public health problem. The goals of this study were to determine the self-reported environmental tobacco smoke exposure status of primary school students in grades 3 to 5, to verify self-reported exposure levels with data provided from a biomarker of exposure, and to develop methods for preventing school children from passive smoking.</p> <p>Methods</p> <p>The study was conducted on 347 primary school students by using a standard questionnaire and urinary cotinine tests. Children with verified ETS exposure were randomly assigned to 2 intervention groups. Two phone interviews were conducted with the parents of the first group regarding their children's passive smoking status and its possible consequences. On the other hand, a brief note concerning urinary cotinine test result was sent to parents of the second group. Nine months after the initial urinary cotinine tests, measurements were repeated in both groups.</p> <p>Results</p> <p>According to questionnaire data, 59.9% of the study group (208 of 347) were exposed to ETS. Urinary cotinine measurements of children were highly consistent with the self-reported exposure levels (P < 0.001). Two different intervention methods were applied to parents of the exposed children. Control tests suggested a remarkable reduction in the proportion of those children demonstrating a recent exposure to ETS in both groups. Proportions of children with urinary cotinine concentrations 10 ng/ml or lower were 79.5% in Group I and 74.2% in Group II (P > 0.05).</p> <p>Conclusion</p> <p>Self-reported ETS exposure was found to be pretty accurate in the 9–11 age group when checked with urinary cotinine tests. Only informing parents that their childrens' ETS exposure were confirmed by a laboratory test seems to be very promising in preventing children from ETS.</p
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