Iron-Deficiency Anemia

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Full Text Available ... increase your risk for iron-deficiency anemia, including: Vegetarian or vegan eating patterns. Not eating enough iron- ... factors , such as if you are following a vegetarian eating pattern, your doctor may recommend changes to ...

Iron-Deficiency Anemia

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Full Text Available ... fatigue or tiredness, shortness of breath, or chest pain. If your doctor diagnoses you with iron-deficiency ... Common symptoms of iron-deficiency anemia include: Chest pain Coldness in the hands and feet Difficulty concentrating ...

Iron-Deficiency Anemia

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Full Text Available ... Look for Treatment will discuss medicines and eating pattern changes that your doctors may recommend if you ... iron-deficiency anemia, including: Vegetarian or vegan eating patterns. Not eating enough iron-rich foods, such as ...

Iron-Deficiency Anemia

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Full Text Available ... iron to prepare for blood loss during delivery. Screening and Prevention Your doctor may screen you for ... and symptoms of iron-deficiency anemia. Return to Screening and Prevention to review tests to screen for ...

Iron-Deficiency Anemia

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Full Text Available ... may require intravenous (IV) iron therapy or a blood transfusion . Iron supplements Your doctor may recommend that you ... Anemia Aplastic Anemia Arrhythmia Blood Donation Blood Tests Blood Transfusion Heart-Healthy Lifestyle Changes Heart Failure Hemolytic Anemia ...

Iron-Deficiency Anemia

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Full Text Available ... anemia if you have certain risk factors , including pregnancy. To prevent iron-deficiency anemia, your doctor may recommend you eat heart-healthy foods or control other conditions that can cause iron-deficiency anemia. Blood tests to screen for ...

Iron-Deficiency Anemia

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Full Text Available ... is blood loss during dialysis. People who have chronic kidney disease also often take other medicines—such as proton ... reduces iron absorption. Other treatments If you have chronic kidney disease and iron-deficiency anemia, your doctor may recommend ...

Iron-Deficiency Anemia

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Full Text Available ... anemia, including: Vegetarian or vegan eating patterns. Not eating enough iron-rich foods, such as meat and fish, may result in ... deficiency anemia, your doctor may recommend heart-healthy eating and choosing iron-rich foods, especially during certain stages of life when more ...

Iron-Deficiency Anemia

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Full Text Available ... for gastrointestinal bleeding To see if gastrointestinal bleeding is causing your iron-deficiency anemia, your doctor may order the following procedures to guide treatment . Fecal ...

Iron-Deficiency Anemia

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Full Text Available ... iron to support the growth of their unborn babies, so their bodies produce more blood. With ... your doctor may recommend you eat heart-healthy foods or control other conditions that ...

Iron-Deficiency Anemia

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Full Text Available ... A-Z Clinical Trials Publications and Resources Health Education and Awareness ... If your doctor diagnoses you with iron-deficiency anemia, your treatment will depend on the cause and severity of the condition. Your ...

Ligand iron catalysts for selective hydrogenation

Science.gov (United States)

Casey, Charles P.; Guan, Hairong

2010-11-16

Disclosed are iron ligand catalysts for selective hydrogenation of aldehydes, ketones and imines. A catalyst such as dicarbonyl iron hydride hydroxycyclopentadiene) complex uses the OH on the five member ring and hydrogen linked to the iron to facilitate hydrogenation reactions, particularly in the presence of hydrogen gas.

Iron-Deficiency Anemia

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Full Text Available ... view the colon directly. What if my doctor thinks something else is causing my iron-deficiency anemia? ... deficiency anemia early in life affects later behavior, thinking, and mood during adolescence. Treating anemia in premature ...

Iron-Deficiency Anemia

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Full Text Available ... screen for iron-deficiency anemia, your doctor may order a blood test called a complete blood count ( ... your risk factors , do a physical exam, or order blood tests or other diagnostic tests. Physical exam ...

Iron-Deficiency Anemia

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Full Text Available ... Treatment will explain treatment-related complications or side effects. Diagnosis Iron-deficiency anemia may be detected during ... to your doctor if you are experiencing side effects such as a bad metallic taste, vomiting, diarrhea, ...

Iron-Deficiency Anemia

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Full Text Available ... lifestyle changes to avoid complications. Follow your treatment plan Do not stop taking your prescribed iron supplements ... warning signs of serious complications and have a plan Tell your doctor if you have any new ...

Iron-Deficiency Anemia

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Full Text Available ... less than 12 g/dl for women is diagnostic of anemia. In iron-deficiency anemia, red blood ... both full-term and preterm infants. Look for Diagnosis will explain tests and procedures that your doctor ...

Iron-Deficiency Anemia

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Full Text Available ... less than 12 g/dl for women is diagnostic of anemia. In iron-deficiency anemia, red blood ... physical exam, or order blood tests or other diagnostic tests. Physical exam Your doctor may ask about ...

Iron-Deficiency Anemia

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Full Text Available ... order blood tests or other diagnostic tests. Physical exam Your doctor may ask about your medical history ... has used up. Increase your intake of vitamin C to help your body absorb iron. Avoid drinking ...

Iron-Deficiency Anemia

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Full Text Available ... endoscopy or colonoscopy, to stop bleeding. Healthy lifestyle changes To help you meet your daily recommended iron ... doctor may recommend that you: Adopt healthy lifestyle changes such as heart-healthy eating patterns. Increase your ...

Iron-Deficiency Anemia

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Full Text Available ... may recommend you eat heart-healthy foods or control other conditions that can cause iron-deficiency anemia. ... heavy menstrual bleeding, your doctor will want to control these other conditions to prevent you from developing ...

Iron-Deficiency Anemia

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Full Text Available ... if you experience heavy periods. During pregnancy, after delivery, or when breastfeeding you may be consuming less ... store iron to prepare for blood loss during delivery. Screening and Prevention Your doctor may screen you ...

Spin dynamics in mesoscopic size magnetic systems: A 1HNMR study in rings of iron (III) ions

International Nuclear Information System (INIS)

Lascialfari, A.; Gatteschi, D.; Borsa, F.; Cornia, A.

1997-01-01

Two magnetic molecular clusters containing almost coplanar rings of iron (III) ions with spinS=5/2 have been investigated by 1 H NMR and relaxation measurements. The first system, which will be referred to as Fe6, is a molecule of general formula [NaFe 6 (OCH 3 ) 12 (C 17 O 4 H 15 ) 6 ] + ClO 4 - or [NaFe 6 (OCH 3 ) 12 (C 15 H 11 O 2 ) 6 ] + ClO 4 - or [LiFe 6 (OCH 3 ) 12 (C 15 H 11 O 2 ) 6 ] + ClO 4 - while the second type of ring, denoted Fe10, corresponds to the molecule [Fe 10 (OCH 3 ) 20 (C 2 H 2 O 2 Cl) 10 ]. The 1 H NMR linewidth is broadened by the nuclear dipolar interaction and by the dipolar coupling of the protons with the iron (III) paramagnetic moment. It is found that the nuclear spin-lattice relaxation rate, T 1 -1 , of the proton is a sensitive probe of the Fe spin dynamics. In both clusters, T 1 -1 decreases with decreasing temperatures from room temperature, goes through a peak just below about 30 K in Fe6 and 10 K in Fe10, and it drops exponentially to very small values at helium temperature. The temperature dependence of the relaxation rate is discussed in terms of the fluctuations of the local spins within the allowed total spin configurations in the framework of the weak collision theory to describe the nuclear relaxation. We use the calculated energy levels for the Fe6 ring based on a Heisenberg Hamiltonian and the value of J obtained from the fit of the magnetic susceptibility to describe semiquantitatively the behavior of T 1 -1 vs T. The exponential drop of T 1 -1 at low temperature is consistent with a nonmagnetic singlet ground state separated by an energy gap from the first excited triplet state. (Abstract Truncated)

Structure and state of repeatedly rubbed pure iron

Energy Technology Data Exchange (ETDEWEB)

Furuichi, Hiroshi [Dept. of Mechanical System Engineering, Yamanashi Univ., Kofu (Japan); Nakamura, Shoichiro [Dept. of Mechanical System Engineering, Yamanashi Univ., Kofu (Japan); Xuan Junsong [Nippo Precision Ltd., Nirasaki (Japan); Yamazaki, Kunihiro [Dept. of Mechanical System Engineering, Yamanashi Univ., Kofu (Japan)

1995-05-01

Pure iron was repeatedly rubbed under special conditions. The highest and the average hardness near the friction surface were 1431 HV and 1146 HV, respectively. Diffraction patterns near the friction surface showed a broad hexagonal ring corresponding to the (002) plane of {epsilon}-iron (hcp), although the other rings are from {alpha}-iron. Extremely fine imperfectly defined regions were observed from the area of this diffraction pattern. Another diffraction patterns showed an extremely diffuse and faint halo ring indicating an amorphous state, whose average atomic distance equals one of the interplanar spacing of the basal plane of {epsilon}-iron. This amorphous state differs from that by obtained rapid quenching. These results suggest that a structure with only the basal plane of {epsilon}-iron appeared during the rubbing and further destruction resulted in the amorphous state. Extremely high pressure may arise during rubbing: {epsilon}-iron forms above 13 GPa at room temperature and the basal plane consists of the shortest atomic distance of iron. In the latter pattern, a spot arrangement indicating a structure ordered only in one or two directions was observed. Rows of pits and cracks connecting them were observed, on the side surface near the rubbed surface, which shows crack formation during sliding contact fatigue. (orig.)

Iron-Deficiency Anemia

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Full Text Available ... 2, especially if they drink a lot of cow’s milk. Cow’s milk is low in iron. Teens, who have ... our Pernicious Anemia Health Topic to learn more. Bone marrow tests help your doctor see whether your ...

Ethinyl Estradiol and Etonogestrel Vaginal Ring

Science.gov (United States)

... or infection of the vagina white or yellow vaginal discharge vaginal bleeding or spotting when it is not time ... Follow your doctor's directions for examining your breasts; report any lumps ... and ethinyl estradiol vaginal ring.Do not let anyone else use your ...

Use of tree-ring chemistry to document historical ground-water contamination events

Science.gov (United States)

Vroblesky, Don A.; Yanosky, Thomas M.

1990-01-01

The annual growth rings of tulip trees (Liriodendron tulipifera L.) appear to preserve a chemical record of ground-water contamination at a landfill in Maryland. Zones of elevated iron and chlorine concentrations in growth rings from trees immediately downgradient from the landfill are closely correlated temporally with activities in the landfill expected to generate iron and chloride contamination in the ground water. Successively later iron peaks in trees increasingly distant from the landfill along the general direction of ground-water flow imply movement of iron-contaminated ground water away from the landfill. The historical velocity of iron movement (2 to 9 m/yr) and chloride movement (at least 40 m/yr) in ground water at the site was estimated from element-concentration trends of trees at successive distances from the landfill. The tree-ring-derived chloride-transport velocity approximates the known ground-water velocity (30 to 80 m/yr). A minimum horizontal hydraulic conductivity (0.01 to .02 cm/s) calculated from chloride velocity agrees well with values derived from aquifer tests (about 0.07 cm/s) and from ground-water modeling results (0.009 to 0.04 cm/s).

A new production technique for wear resistant ring-hammers

Directory of Open Access Journals (Sweden)

Li Shifeng

2011-11-01

Full Text Available Based on a great number of laboratory experiments, a new technique has been developed for producing wear resistant ring-hammers. In this technology, lost foam casting with iron sand was combined to make mold; a special alloy was used to inoculate the molten steel, and proper heat treatment was used to further improve mechanical properties of wear resistant ring-hammers. The influence of this new production technology on the microstructure and mechanical properties of wear resistant ring-hammers was studied. Results show that iron sand molding, having the inherent characteristic of sand molding, changes the type of metallic compounds, refines crystal grains and increases the fineness of microstructure. Practical experience verified that the properties of the ring-hammers produced with this new technique are as follows: tensile strength (Rm 720 MPa, impact toughness (ak > 210 J•cm-2 and hardness > 200 HB. After water quenching from 1,080℃ (holding for 4 h and tempering at 320℃ for 3 h, the best wear resistance is obtained, and the wear resistance is 1.6 times higher than that of common high manganese ring-hammers.

Components for the CERN LEP ring

Energy Technology Data Exchange (ETDEWEB)

1987-01-01

One of the most important experimental setups at the LEP (Large Electron Positron Collider) ring is called OPAL (Omni Purpose Apparatus for LEP). Sulzer-Escher Wyss, Zurich, is to deliver the iron yoke, i.e. the mechanical part of one of the nine OPAL detectors. The contract for the yoke includes essentially the two side parts, each consisting of ten modules and two end caps, the middle part, four special modules and two supporting rings, as well as both the poles. The combined weight of all the supply items comes to some 2300 t. (Auth.).

The pupylation machinery is involved in iron homeostasis by targeting the iron storage protein ferritin.

Science.gov (United States)

Küberl, Andreas; Polen, Tino; Bott, Michael

2016-04-26

The balance of sufficient iron supply and avoidance of iron toxicity by iron homeostasis is a prerequisite for cellular metabolism and growth. Here we provide evidence that, in Actinobacteria, pupylation plays a crucial role in this process. Pupylation is a posttranslational modification in which the prokaryotic ubiquitin-like protein Pup is covalently attached to a lysine residue in target proteins, thus resembling ubiquitination in eukaryotes. Pupylated proteins are recognized and unfolded by a dedicated AAA+ ATPase (Mycobacterium proteasomal AAA+ ATPase; ATPase forming ring-shaped complexes). In Mycobacteria, degradation of pupylated proteins by the proteasome serves as a protection mechanism against several stress conditions. Other bacterial genera capable of pupylation such as Corynebacterium lack a proteasome, and the fate of pupylated proteins is unknown. We discovered that Corynebacterium glutamicum mutants lacking components of the pupylation machinery show a strong growth defect under iron limitation, which was caused by the absence of pupylation and unfolding of the iron storage protein ferritin. Genetic and biochemical data support a model in which the pupylation machinery is responsible for iron release from ferritin independent of degradation.

Saturn Rings Origin: Quantum Trapping of Superconducting Iced Particles and Meissner Effect Lead to the Stable Rings System

Science.gov (United States)

Viktorovich Tchernyi, Vladimir

2018-06-01

Saturn Rings Origin: Quantum Trapping of Superconducting Iced Particles and Meissner Effect Lead to the Stable Rings System Vladimir V. Tchernyi (Cherny), Andrew Yu. Pospelov Modern Science Institute, SAIBR, Moscow, Russia. E-mail: chernyv@bk.ruAbstractIt is demonstrated how superconducting iced particles of the protoplanetary cloud of Saturn are coming to magnetic equator plane and create the stable enough rings disk. There are two steps. First, after appearance of the Saturn magnetic field due to Meissner phenomenon all particles orbits are moving to the magnetic equator plane. Finally they become distributed as rings and gaps like iron particles around magnet on laboratory table. And they are separated from each other by the magnetic field expelled from them. It takes up to few tens of thousands years with ten meters rings disk thickness. Second, due to their quantum trapping all particles become to be trapped within magnetic well at the magnetic equator plane due to Abrikosov vortex for superconductor. It works even when particles have small fraction of superconductor. During the rings evolution some contribution to the disk also could come from the collision-generated debris of the current moon and from the geysers like it happened due to magnetic coupling of Saturn and Enceladus. The rings are relict of the early days of the magnetic field of Saturn system.

Low energy current accumulator for high-energy proton rings

International Nuclear Information System (INIS)

Month, M.

1977-01-01

Building current in high-energy p-p colliding beam machines is most appropriately done in a low-energy (small circumference) current accumulator. Three significant factors favor such a procedure: First, large rings tend to be susceptible to unstable longitudinal density oscillations. These can be avoided by pumping up the beam in the accumulator. When the current stack is injected into the storage ring, potentially harmful instability is essentially neutralized. Second, high-field magnets characteristic of future high energy proton rings are designed with superconducting coils within the iron magnetic shield. This means coil construction and placement errors propagate rapidly within the beam aperture. An intermediate ''stacking ring'' allows the minimum use of the superconducting ring aperture. Finally, the coils are vulnerable to radiation heating and possible magnet quenching. By minimizing beam manipulaion in the superconducting environment and using only the central portion of the beam aperture, coil vulnerability can be put at a minimum

Suicide in doctors and wives of doctors.

Science.gov (United States)

Sakinofsky, I

1980-06-01

This paper re-examines the widespread belief that doctors have a proneness for suicide greater than the general population. The Standardized Mortality Ratio for male physicians is 335 and for single women doctors 257. Doctors' wives have an even greater risk: their SMR is 458. These rates for doctors are higher than for most other professional groups (except pharmacists) and the rate for doctors' wives far exceeds that for wives of other professionals. The intrinsic causes of the physician's high occupational mortality include his knowledge of toxicology and ready access to lethal drugs, so that impulsive suicide is more often successful. Professional stress and overwork, particularly the unrelenting responsibility for decisions upon which the lives of others may depend, have been inculpated. These stresses interact with the decline in the doctors' self-respect and with a personality that is prestige-oriented and independent. Some physicians turn in their frustration to alcohol/and or drugs, accelerating the process of deterioration. The high suicide rate in doctors' wives appears to be the result of unrequited needs for caring and dependency which the doctors' career demands and personality deny them.

Masculinity in the doctor's office: Masculinity, gendered doctor preference and doctor-patient communication.

Science.gov (United States)

Himmelstein, Mary S; Sanchez, Diana T

2016-03-01

Mortality and morbidity data suggest that men have shorter life expectancies than women and outrank women on several leading causes of death. These gendered disparities may be influenced by psychosocial factors like masculinity. Three studies (Total N=546) examined the role of masculinity in men's doctor choices and doctor-patient interactions. In Studies 1 and 2, men completed measures of masculinity, gender bias, and doctor preference. Using structural equation modeling, we tested the direct relationship between masculinity and male doctor preference and the indirect relationship of masculinity on male doctor preference through an association with gendered competence stereotypes. Participants in Study 3 disclosed symptoms in private followed by disclosure to a male or female interviewer in a clinical setting. Using repeated measures analysis of variance (ANOVA), we examined the interaction among symptom reporting, masculinity and doctor gender, controlling for participant comfort. In Study 1, results suggested that masculinity encouraged choice of a male doctor directly and indirectly via beliefs that men make more competent doctors than women; Study 2 directly replicated the results of Study 1. In Study 3, independent of participant comfort, an interaction between interviewer gender and masculinity emerged such that men scoring higher on masculinity reported symptoms less consistently to male interviewers (relative to higher scoring men reporting to female interviewers); the reverse was found for men scoring low on masculinity. Taken together these studies suggest that masculinity may affect men's health by encouraging choice of a male doctor with whom doctor-patient communication may be impaired. Copyright © 2015 Elsevier Inc. All rights reserved.

University strategy for doctoral training: the Ghent University Doctoral Schools.

Science.gov (United States)

Bracke, N; Moens, L

2010-01-01

The Doctoral Schools at Ghent University have a three-fold mission: (1) to provide support to doctoral students during their doctoral research, (2) to foster a quality culture in (doctoral) research, (3) to promote the international and social stature and prestige of the doctorate vis-a-vis potential researchers and the potential labour market. The Doctoral Schools offer top-level specialized courses and transferable skills training to doctoral students as part of their doctoral training programme. They establish mechanisms of quality assurance in doctoral research. The Doctoral Schools initialize and support initiatives of internationalization. They also organize information sessions, promotional events and interaction with the labour market, and as such keep a finger on the pulse of external stakeholders.

Observation of electromagnetically induced transparency and absorption in Yttrium Iron Garnet loaded split ring resonator

Science.gov (United States)

Tay, Z. J.; Soh, W. T.; Ong, C. K.

2018-04-01

In this paper, we propose a new method of controlling microwave transmission from Electromagnetically Induced Absorption (EIA) to Electromagnetically Induced Transparency (EIT). EIA describes the state where the system strongly absorbs microwaves, whereas EIT describes the state in which the system is transparent to microwaves. Control is achieved via coupling of the 3 GHz photon mode of a metamaterial Split Ring Resonator (SRR) to the spin wave magnon modes of a Yttrium Iron Garnet (YIG) bulk. The system is described by a 2-body interaction matrix with an additional fitting parameter τ which takes into account the fact that the microstrip feed line could excite the SRR as well as the YIG. The parameter τ reveals the effect of geometry and shielding on the coupling behaviour and gives rise to unique physics. In low τ (τ ⩽ 2) configurations, only EIT is reported. However, in high τ (τ ≈ 10) configurations, EIA is reported. Furthermore, we report that the system can be easily changed from a low τ to high τ configuration by shielding the SRR from the microstrip with a thin metal piece. Varying the τ parameter through shielding is thus proposed as a new method of controlling the microwave transmission at the coupling region.

Dietary hemoglobin rescues young piglets from severe iron deficiency anemia: Duodenal expression profile of genes involved in heme iron absorption.

Directory of Open Access Journals (Sweden)

Robert Staroń

Full Text Available Heme is an efficient source of iron in the diet, and heme preparations are used to prevent and cure iron deficiency anemia in humans and animals. However, the molecular mechanisms responsible for heme absorption remain only partially characterized. Here, we employed young iron-deficient piglets as a convenient animal model to determine the efficacy of oral heme iron supplementation and investigate the pathways of heme iron absorption. The use of bovine hemoglobin as a dietary source of heme iron was found to efficiently counteract the development of iron deficiency anemia in piglets, although it did not fully rebalance their iron status. Our results revealed a concerted increase in the expression of genes responsible for apical and basolateral heme transport in the duodenum of piglets fed a heme-enriched diet. In these animals the catalytic activity of heme oxygenase 1 contributed to the release of elemental iron from the protoporphyrin ring of heme within enterocytes, which may then be transported by the strongly expressed ferroportin across the basolateral membrane to the circulation. We hypothesize that the well-recognized high bioavailability of heme iron may depend on a split pathway mediating the transport of heme-derived elemental iron and intact heme from the interior of duodenal enterocytes to the bloodstream.

Fermilab Recycler Ring: Technical design report. Revision 1.1

International Nuclear Information System (INIS)

Jackson, G.

1996-07-01

This report describes the technical design of the Fermilab Recycler Ring. The purpose of the Recycler is to augment the luminosity increase anticipated from the implementation of the Fermi III upgrade project, which has as its main component the Fermilab Main Injector construction project. The Recycler is a fixed 8 GeV kinetic energy storage ring. It is located in the Main Injector tunnel directly above the Main Injector beamline, near the ceiling. The construction schedule calls for the installation of the Recycler ring before the installation shutdown of the Main Injector. This aggressive construction schedule is made possible by the exclusive use of permanent magnets in the ring lattice, removing the need for expensive conventional iron/copper magnet construction along with the related power supplies, cooling water system, and electrical safety systems. The location, operating energy, and mode of construction are chosen to minimize operational impacts on both Fermilab's ongoing High Energy Physics program and the Main Injector construction project

Shimming techniques for the ultraprecise muon g-2 storage ring at the AGS

International Nuclear Information System (INIS)

Danby, G.T.; Jackson, J.W.

1993-01-01

Major components are in an advanced state of construction for a 7 meter radius 0.1 PPM precision storage ring. Detailed techniques are planned for static shimming of the assembly to at least 10 PPM magnetic field uniformity prior to the use of field correction coils. An air gap behind each ultra-pure iron pole piece strongly decouples the aperture field shape from the properties of the 1,006 iron yoke. Iron wedges whose thickness varies across the width of the poles with slope of ∼ 1/60 are used to eliminate the gradient produced by the C-magnet shape required for open access for the decay electron counter on the inside radius of the storage ring magnet. These wedges are 10 cm in azimuthal length and can be radially adjusted for short wavelength field adjustments. A horizontal motion of 50 μm effectively adjusts the 10 cm half-gap aperture by 1 μm (or 10 PPM). This and other techniques to adjust dipole, quadrupole, sextuple, etc. multipoles will be described

Research on a new magnetic-field-modulated brushless double-rotor machine with sinusoidal-permeance modulating ring

Directory of Open Access Journals (Sweden)

Ping Zheng

2017-05-01

Full Text Available The magnetic-field-modulated brushless double-rotor machine (MFM-BDRM, composed of a stator, a modulating ring rotor, and a PM rotor, is a kind of power-split device for hybrid electric vehicles (HEVs. In this paper, a new MFM-BDRM with sinusoidal-permeance modulating ring named Sinusoidal-Permeance-Modulating-Ring Brushless Double-Rotor Machine (SPMR-BDRM is proposed to solve the problem of poor mechanical strength and large iron loss. The structure and the operating principle of the MFM-BDRM are introduced. The design principle of the sinusoidal-permeance modulating ring is analyzed and derived. The main idea of that is to minimize the harmonic permeance of air gap, thereby the harmonic magnetic fields can be restrained. There are comparisons between a MFM-BDRM with sinusoidal-permeance modulating ring and a same size MFM-BDRM with traditional modulating ring, including magnetic field distributions and electromagnetic performances. Most importantly, the iron losses are compared under six different conditions. The result indicates that the harmonic magnetic fields in the air gap are restrained; the electromagnetic torque and power factor are almost the same with same armature current; the torque ripples of the modulating ring rotor and the PM rotor are reduced; the stator loss is reduced by 13% at least and the PM loss is reduced by 20% at least compared with the same size traditional MFM-BDRM under the same operating conditions.

Degradation mechanism of Direct Pink 12B treated by iron-carbon micro-electrolysis and Fenton reaction.

Science.gov (United States)

Wang, Xiquan; Gong, Xiaokang; Zhang, Qiuxia; Du, Haijuan

2013-12-01

The Direct Pink 12B dye was treated by iron-carbon micro-electrolysis (ICME) and Fenton oxidation. The degradation pathway of Direct Pink 12B dye was inferred by ultraviolet visible (UV-Vis), infrared absorption spectrum (IR) and high performance liquid chromatography-mass spectrometry (HPLC-MS). The major reason of decolorization was that the conjugate structure was disrupted in the iron-carbon micro-electrolysis (ICME) process. However, the dye was not degraded completely because benzene rings and naphthalene rings were not broken. In the Fenton oxidation process, the azo bond groups surrounded by higher electron cloud density were first attacked by hydroxyl radicals to decolorize the dye molecule. Finally benzene rings and naphthalene rings were mineralized to H2O and CO2 under the oxidation of hydroxyl radicals. Copyright © 2013 The Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

Doctors on display: the evolution of television's doctors.

Science.gov (United States)

Tapper, Elliot B

2010-10-01

Doctors have been portrayed on television for over 50 years. In that time, their character has undergone significant changes, evolving from caring but infallible supermen with smoldering good looks and impeccable bedside manners to drug-addicted, sex-obsessed antiheroes. This article summarizes the major programs of the genre and explains the pattern of the TV doctors' character changes. Articulated over time in the many permutations of the doctor character is a complex, constant conversation between viewer and viewed representing public attitudes towards doctors, medicine, and science.

[Influence of patients' attitude on doctors' satisfaction with the doctor-patient relationship].

Science.gov (United States)

Xie, Zheng; Qiu, Ze-qi; Zhang, Tuo-hong

2009-04-18

To describe the doctors' satisfaction of the doctor-patient relationship and find out the influencing factors of the patients, gathering evidence to improve the doctor-patient relationship. This study was a cross-sectional study, in which doctors and nurses in 10 hospitals of Beijing, Shandong and Chongqing were surveyed with structured questionnaires and in-depth interviews. The mean score of the doctors' satisfaction of the doctor-patient relationship was 59.97, which was much lower than the patients'. The patients' socio-demographic characteristics, social economic status (SES) and behavior characteristics influence the interaction of the doctors and the patients. The doctors' satisfaction of the doctor-patient relationship was influenced by the patients' trust. The doctors' perspective is helpful to define the tension and the cause of the doctor-patient relationship. The patients' characteristics have important influence on the doctor-patient relationship. It's necessary to take action on the patients to improve the doctor-patient relationship.

Patient-doctor relationship: the practice orientation of doctors in Kano.

Science.gov (United States)

Abiola, T; Udofia, O; Abdullahi, A T

2014-01-01

Attitude and orientation of doctors to the doctor-patient relationship has a direct influence on delivery of high quality health- care. No study to the knowledge of these researchers has so far examined the practice orientation of doctors in Nigeria to this phenomenon. The aims of this study were to determine the orientation of Kano doctors to the practice of doctor-patient relationship and physicians' related-factors. Participants were doctors working in four major hospitals (i.e., two federal-owned and two state-owned) servicing Kano State and its environs. The Patient-Practitioner Orientation Scale (PPOS) and a socio-demographic questionnaire were completed by the 214 participants. The PPOS has 18 items and measures three parameters of a total score and two dimension of "sharing" and "caring". The mean age of participants was 31.72 years (standard deviation = 0.87), with 22% being females, 40.7% have been practicing for ≥ 6 years and about two-third working in federal-owned health institution. The Cronbach's alpha of total PPOS scores was 0.733 and that of two sub-scale scores of "sharing" and "caring" were 0.659 and 0.546 respectively. Most of the doctors' orientation (92.5%) was towards doctor-centered (i.e., paternalistic) care, majority (75.2%) upheld the view of not sharing much information and control with patients, and showing little interest in psychosocial concerns of patients (i.e., 'caring'=93.0%). Respondents' characteristics that were significantly associated with high doctor 'caring' relationship orientation were being ≥ 30-year-old and practicing for ≥ 6 years. Working in State-owned hospitals was also significantly associated with high doctor "sharing" orientation. This paper demonstrated why patient-centered medical interviewing should be given top priority in medical training in Nigeria, and particularly for federal health institutions saddled with production of new doctors and further training for practicing doctors.

The doctor(s) in house: an analysis of the evolution of the television doctor-hero.

Science.gov (United States)

Strauman, Elena C; Goodier, Bethany C

2011-03-01

The medical drama and its central character, the doctor-hero have been a mainstay of popular television. House M.D. offers a new (and problematic) iteration of the doctor-hero. House eschews the generic conventions of the "television doctor" by being neither the idealized television doctor of the past, nor the more recent competent but often fallible physicians in entertainment texts. Instead, his character is a fragmented text which privileges the biomedical over the personal or emotional with the ultimate goal of scientifically uncovering and resolving instances of disease. This article examines the implicit and explicit messages in House M.D. and critically analyzes both the show and its lead character in relation to the traditional medical drama genre that highlights the "doctor-hero" as the central character. While at first House seems to completely violate narrative and generic norms, ultimately the program provides a new form that reinforces the presence of the doctor-hero, but highlights House's character as the central figure who is personally and interpersonally problematic but biomedically effective.

Resource-saving technology for manufacturing billets for piston’s rings

Directory of Open Access Journals (Sweden)

A. N. Krutilin

2010-10-01

Full Text Available Piston’s rings are one of the most critical parts of heavy-duty engines for wear-work in conditions of prolonged exposure of alternating loads and high temperatures. Currently in the world production of billets for piston’s rings is dominated by the two methods of casting: production of individual and oiling billets of gray and ductile cast iron in green-sand mold and shell mold and centrifugal casting method (intended primarily for oiling billets of ductile iron; the technology for individual production billets for piston’s rings with a diameter up to 250 mm, from 250 to 450 mm with individual and oiling ways, over 450 mm - preference of oiling billet. The best parameters of physical-mechanical and operational characteristics piston’s rings are in the case of manufacture of billets to the maximum extent approaching the configuration to the finished product. The rings made of shaped billets are characterized by uniform distribution of properties from the perimeter, provide a given diagram of pressures and full fit to the cylinder. Because of deficiencies of traditional methods of casting, continuous quality requirements for billets, the need for economy of material, fuel and energy resources, are finding new progressive technological processes of production of high-quality billets for piston’s rings. One of the most promising for piston rings billet is a method of casting consists of immersing the sand molds into the melt. It is interesting idea, expressed by A. Sutherland and subsequently patented in several countries in the way of casting method, called "immersion pouring technology" (ICT-Immersion Casting Technique [1]. Experiments, conducted in the laboratory of the Belarusian National Technical University, have identified significant shortcomings of immersion method of casting. When forms are immersing, have an intensive gassing in molten metal, and freezing of the metal on the out surface of the form. But despite some

The effect of the doctor's sex on the doctor-patient relationship

OpenAIRE

Gray, Judith

1982-01-01

The differences between male and female doctors are investigated, and what patients expect from their doctors is examined. Some conclusions are drawn from the preferences which patients express for male and female doctors and from the different outcomes of male and female doctor-patient interactions.

Penile strangulation by iron metal ring: A novel and effective method of management

Science.gov (United States)

Paonam, Somorendro; Kshetrimayum, Nillachandra; Rana, Indrajit

2017-01-01

Penile strangulation by metal ring is a rare urological emergency situation which requires urgent decompression of the penis to avoid adverse effect. It is usually associated with an attempt to improve sexual act and/or to prolong erection. But sometimes, cutting of the ring to decompress the penis safely is a very difficult task particularly when the strangulating object is a hard metal object as in our case. Here, we present a case which was managed by cutting in a novel way with the help of dental micromotor with wheel shape bur. PMID:28216935

Penile strangulation by iron metal ring: A novel and effective method of management

Directory of Open Access Journals (Sweden)

Somorendro Paonam

2017-01-01

Full Text Available Penile strangulation by metal ring is a rare urological emergency situation which requires urgent decompression of the penis to avoid adverse effect. It is usually associated with an attempt to improve sexual act and/or to prolong erection. But sometimes, cutting of the ring to decompress the penis safely is a very difficult task particularly when the strangulating object is a hard metal object as in our case. Here, we present a case which was managed by cutting in a novel way with the help of dental micromotor with wheel shape bur.

Building doctoral ecologies

DEFF Research Database (Denmark)

Bengtsen, Søren Smedegaard

2018-01-01

heavily from the support from informal and extra-curricular researcher communities and non-formal support systems even beyond the institution in the private and societal lifeworlds. The chapter describes and analyses such forms of organizational and existential darkness within doctoral education...... and professionalization of doctoral education, with Graduate schools increasing in size and organizational complexity. Paradoxically, we see in contemporary research into doctoral students’ learning experiences that the students do not favour the formalized support systems and supervision, but on the contrary draw most......, and discusses how institutions and doctoral programmes could use such sprawling spaces for learning to build doctoral ecologies and to strengthening existentially based pedagogies within doctoral education....

Choose your doctorate.

Science.gov (United States)

Jolley, Jeremy

2007-02-01

The development of education options for nurses has been inexorable and it is increasingly the case that senior nurses are considering a doctorate as the logical next step in their educational career. Such individuals need to make important decisions as to whether they should embark on a taught doctorate, professional doctorate or a traditional PhD. Each of these options will necessitate a considerable investment in time and money as well as the sacrifice of quality time and spare time over a significant number of years. A doctorate is not for everyone. Those still reading this text may be asking 'could this possibly be for me'? This paper will try to help the reader decide which if any option to take. It is suggested that nurses will now turn to the doctoral degree as their next adventure in academic study. It is argued that this development is not being controlled by management forces and indeed cannot be controlled by them. This last is chiefly because the move towards doctoral education is led by individuals who choose to study for a doctorate simply because they can. The paper considers what choices are available to nurses who wish to pursue a doctoral programme of study. In particular, this paper considers what new developments in doctoral courses are becoming available and what advantage there may be in studying for one of the newer professional doctorates rather than a traditional PhD. The material here is the result of a review of the literature on recent developments in doctoral education for nurses. The existing provision by UK and other universities was also reviewed, the data being collected by an informal review of universities' advertising material. It is inevitable that some nurses who are already qualified to degree and masters degree will take advantage of the doctoral degree opportunities which now newly present themselves. For nurses in practice, the advantages of the professional doctorate is that it is more structured, enables more peer and

Magnet design for a low-emittance storage ring

International Nuclear Information System (INIS)

Johansson, Martin; Anderberg, Bengt; Lindgren, Lars-Johan

2014-01-01

The magnet design of the MAX IV 3 GeV storage ring replaces the conventional support girder + discrete magnets scheme of previous third-generation light sources with a compact integrated design having several consecutive magnet elements precision-machined out of a common solid iron block. The MAX IV 3 GeV storage ring, currently under construction, pursues the goal of low electron beam emittance by using a multi-bend achromat magnet lattice, which is realised by having several consecutive magnet elements precision-machined out of a common solid iron block, 2.3–3.4 m long. With this magnet design solution, instead of having 1320 individual magnets, the MAX IV 3 GeV storage ring is built up using 140 integrated ‘magnet block’ units, containing all these magnet elements. Major features of this magnet block design are compactness, vibration stability and that the alignment of magnet elements within each unit is given by the mechanical accuracy of the CNC machining rather than individual field measurement and adjustment. This article presents practical engineering details of implementing this magnet design solution, and mechanical + magnetic field measurement results from the magnet production series. At the time of writing (spring 2014), the production series, which is totally outsourced to industry, is roughly half way through, with mechanical/magnetic QA conforming to specifications. It is the conclusion of the authors that the MAX IV magnet block concept, which has sometimes been described as new or innovative, is from a manufacturing point of view simply a collection of known mature production methods and measurement procedures, which can be executed at fixed cost with a low level of risk

Doctors on display: the evolution of television's doctors

OpenAIRE

Tapper, Elliot B.

2010-01-01

Doctors have been portrayed on television for over 50 years. In that time, their character has undergone significant changes, evolving from caring but infallible supermen with smoldering good looks and impeccable bedside manners to drug-addicted, sex-obsessed antiheroes. This article summarizes the major programs of the genre and explains the pattern of the TV doctors' character changes. Articulated over time in the many permutations of the doctor character is a complex, constant conversation...

Radiographers as doctors: A profile of UK doctoral achievement

International Nuclear Information System (INIS)

Snaith, B.; Harris, M.A.; Harris, R.

2016-01-01

Introduction: Radiography aspires to be a research active profession, but there is limited information regarding the number of individuals with, or studying for, a doctoral award. This study aims to profile UK doctoral radiographers; including their chosen award, approach and employment status. Method: This was a prospective cohort study utilising an electronic survey. No formal database of doctoral radiographers existed therefore a snowball sampling method was adopted. The study sample was radiographers (diagnostic and therapeutic) based in the UK who were registered with the Health and Care Professions Council (HCPC) and who held, or were studying for, a doctoral award. Results: A total of 90 unique responses were received within the timescale. The respondents comprised 58 females (64.4%) and the majority were diagnostic radiographers (n = 71/90; 78.9%). The traditional PhD was the most common award, although increasing numbers were pursuing Education or Professional Doctorates. An overall increase in doctoral studies is observed over time, but was greatest amongst those working in academic institutions, with 63.3% of respondents (n = 57/90) working solely within a university, and a further 10% employed in a clinical–academic role (n = 9/90). Conclusion: This study has demonstrated that radiography is emerging as a research active profession, with increasing numbers of radiographers engaged in study at a doctoral level. This should provide a platform for the future development of academic and clinical research. - Highlights: • 90 radiographers were identified as holding, or studying for, a doctoral award. • The PhD is the most common award. • EdD and professional doctorates are increasing in popularity. • Academic staff were more likely to pursue such research training.

The g-2 storage ring superconducting magnet system

International Nuclear Information System (INIS)

Green, M.A.

1993-09-01

The g-2 μ lepton (muon) storage ring is a single dipole magnet that is 44 meters in circumference. The storage ring dipole field is created by three large superconducting solenoid coils. A single outer solenoid, 15.1 meters in diameter, carries 254 kA. Two inner solenoids, 13.4 meters in diameter, carry 127 kA each in opposition to the current carried by the outer solenoid. A room temperature C shaped iron yoke returns the magnetic flux and shapes the magnetic field in a 180 mm gap where the stored muon beam circulates. The gap induction will be 1.47 T. This report describes the three large superconducting solenoids, the cryogenic system needed to keep them cold, the solenoid power supply and the magnet quench protection system

Unicell structure for superconducting storage rings

International Nuclear Information System (INIS)

Danby, G.; DeVito, B.; Jackson, J.

1985-01-01

Mechanically integrated, magnetically decoupled storage rings were designed for a heavy ion collider for 100 GeV/amu Au, at B = 2.7T. New concepts were developed, including detailed engineering design and cost estimates. A ''unicell'' contains a half-cell of both rings within a single He vessel. The unicell design is optimized for economical mass production. Survey pads welded to the laminations provide external fiducials to locate the magnet cores. Roller bearing self aligning supports accommodate cool-down shrinkage. The design tolerates relative motion of components resulting from longitudinal shrinkage in the approx.15 m long unicell without affecting performance. Magnetic and physical lengths are the same, eliminating waste space. ''Achromatic'' quadrupoles with sextupoles at both ends are located on a common precision beam tube which aligns and supports a pick-up electrode. The unicell accommodates longer dipoles compared to conventional designs, reducing B/sub max/, stored energy, and the volume of iron and superconductor. Applications to future machines will be discussed

[The motivation to become a medical doctor - doctoral students in a formal academic study program compared with those pursuing their doctorate independently].

Science.gov (United States)

Pfeiffer, M; Dimitriadis, K; Holzer, M; Reincke, M; Fischer, M R

2011-04-01

Weight and quality of medical doctoral theses have been discussed in Germany for years. Doctoral study programs in various graduate schools offer opportunities to improve quality of medical doctoral theses. The purpose of this study was to demonstrate distinctions and differences concerning motivation, choice of subject and the dissertation process between doctoral candidates completing the doctoral seminar for doctoral students in the Ludwig-Maximilians-University (LMU) Munich and doctoral candidates doing their doctorate individually. All 4000 medical students of the LMU obtained an online-questionnaire which was completed by 767 students (19 % response rate). The theoretical framework of this study was based upon the Self-Determination-Theory by Deci and Ryan. Doctoral candidates completing the doctoral study program were more intrinsically motivated than doctoral candidates doing their doctorate individually; no difference was found in their extrinsic motivation. In regard to choice of subject and dissertation process the doctoral students in the seminar were distinguished from the individual group by having chosen a more challenging project. They anticipated a demanding dissertation process including conference participation, publishing of papers, etc. Intrinsic motivation correlates positively with choosing a challenging project and a demanding dissertation process. High intrinsic motivation seems to be very important for autonomous scholarly practice. Our results suggest that doctoral study programs have a positive impact on intrinsic motivation and interest in research. © Georg Thieme Verlag KG Stuttgart · New York.

Prevention of Iron-Deficiency Anemia in Infants and Children of Preschool Age.

Science.gov (United States)

Fomon, Samuel J.

Iron-deficiency anemia is almost certainly the most prevalent nutritional disorder among infants and young children in the United States. Anemia is frequently seen among children of low socioeconomic status but is probably also the most frequent nutritional deficiency disease seen among children cared for by private doctors. Possible reasons for…

Doctoral Women: Managing Emotions, Managing Doctoral Studies

Science.gov (United States)

Aitchison, Claire; Mowbray, Susan

2013-01-01

This paper explores the experiences of women doctoral students and the role of emotion during doctoral candidature. The paper draws on the concept of emotional labour to examine the two sites of emotional investment students experienced and managed during their studies: writing and family relationships. Emotion is perceived by many dominant…

Iron(III) complexes of certain tetradentate phenolate ligands as ...

Indian Academy of Sciences (India)

non-heme iron enzymes, which catalyse the oxidative cleavage of catechols to cis, cis-muconic acids with the incorporation of ... nature of heterocyclic rings of the ligands and the methyl substituents on them regulate the electronic spectral features .... and simple substitution reactions.19,21 The complexes of [H2(L5)] and ...

The synthesis, structure and reactivity of iron-bismuth complexes : Potential Molecular Precursors for Multiferroic BiFeO3

OpenAIRE

Wójcik, Katarzyna

2009-01-01

The thesis presented here is focused on the synthesis of iron-bismuth alkoxides and siloxides as precursors for multiferroic BiFeO3 systems. Spectrum of novel cyclopentadienyl substituted iron-bismuth complexes of the general type [{Cpy(CO)2Fe}BiX2], as potential precursors for cyclopentadienyl iron-bismuth alkoxides or siloxides [{Cpy(CO)2Fe}Bi(OR)2] (R-OtBu, OSiMe2tBu), were obtained and characterised. The use of wide range of cyclopentadienyl rings in the iron carbonyl compounds allowed fo...

Doctors in Balzac's work.

Science.gov (United States)

Moulin, Thierry

2013-01-01

Balzac wrote his novels during a time of great literary and scientific change. Romanticism gave way to the school of realism, of which Balzac could be considered the founder. It was via realism, where both the positive and negative aspects of life were depicted, that doctors naturally gained a much more active role in novels. In conjunction with this was the development of science and medicine, which fascinated Balzac, also leading to the significant and prevalent role of doctors in his works. His fascination with the sciences led to him to gain many acquaintances and much knowledge in the medical domain, especially in neuropsychiatry and physiology. His fictional doctors, such as Desplein and Bianchon, thus demonstrate considerable knowledge of pathology, physiology, and neuropsychiatry. The doctors in Balzac's novels can be grouped into four categories: provincial doctors, Parisian doctors, country doctors, and military doctors. They were most often fictitious representations of real individuals (e.g. Guillaume Dupuytren), and often symbolize schools of thought which were in vogue at the time. In addition to the accurate scientific depiction of doctors, it must be noted that his doctors not only played an active role in clinically assessing their patients, but also had a sociological role in assessing society; it is through his doctors that Balzac gave his opinion of the world in which he lived. Copyright © 2013 S. Karger AG, Basel.

Doctors Today

LENUS (Irish Health Repository)

Murphy, JFA

2012-03-01

Doctors’ relationship with patients and their role in society is changing. Until the 1960s doctors concentrated on the welfare of patients with less emphasis placed on patients’ rights1. Over recent decades there has been increasing empowerment of the individual across all facets of society including health care. Doctors continue to be perceived as having expertise and authority over medical science. Patients, however, now hold sway over questions of values or preferences. We all must be aware of this change in the doctor- patient interaction. We need to be more aware of the outcomes that patients view as important. The concept of shared decision-making with the patient is now widely appreciated. The process involves a change in mind set particularly for doctors who trained in an earlier era.

Cost incentives for doctors

DEFF Research Database (Denmark)

Schottmüller, Christoph

2013-01-01

If doctors take the costs of treatment into account when prescribing medication, their objectives differ from their patients' objectives because the patients are insured. This misalignment of interests hampers communication between patient and doctor. Giving cost incentives to doctors increases...... welfare if (i) the doctor's examination technology is sufficiently good or (ii) (marginal) costs of treatment are high enough. If the planner can costlessly choose the extent to which doctors take costs into account, he will opt for less than 100%. Optimal health care systems should implement different...... degrees of cost incentives depending on type of disease and/or doctor....

Interpersonal perception in the context of doctor-patient relationships: a dyadic analysis of doctor-patient communication.

Science.gov (United States)

Kenny, David A; Veldhuijzen, Wemke; Weijden, Trudy van der; Leblanc, Annie; Lockyer, Jocelyn; Légaré, France; Campbell, Craig

2010-03-01

Doctor-patient communication is an interpersonal process and essential to relationship-centered care. However, in many studies, doctors and patients are studied as if living in separate worlds. This study assessed whether: 1) doctors' perception of their communication skills is congruent with their patients' perception; and 2) patients of a specific doctor agree with each other about their doctor's communication skills. A cross-sectional study was conducted in three provinces in Canada with 91 doctors and their 1749 patients. Doctors and patients independently completed questions on the doctor's communication skills (content and process) after a consultation. Multilevel modeling provided an estimate of the patient and doctor variance components at both the dyad-level and the doctor-level. We computed correlations between patients' and doctors' perceptions at both levels to assess how congruent they were. Consensus among patients of a specific doctor was assessed using intraclass correlation coefficient (ICC). The mean score of the rating of doctor's skills according to patients was 4.58, and according to doctors was 4.37. The dyad-level variance for the patient was .38 and for the doctor was .06. The doctor-level variance for the patient ratings was .01 and for the doctor ratings, .18. The correlation between both the patients' and the doctors' skills' ratings scores at the dyad-level was weak. At the doctor-level, the correlation was not statistically significant. The ICC for patients' ratings was .03 and for the doctors' ratings .76. Overall, this study suggests that doctors and their patients have a very different perspective of the doctors' communication skills occurring during routine clinical encounters. 2009 Elsevier Ltd. All rights reserved.

Unicell structure for superconducting storage rings

Energy Technology Data Exchange (ETDEWEB)

Danby, G.; DeVito, B.; Jackson, J.; Keohane, G.; Lee, Y.Y.; Phillips, R.; Plate, S.; Repeta, L.; Skaritka, J.; Smith, L.

1985-10-01

Mechanically integrated, magnetically decoupled storage rings were designed for a heavy ion collider for 100 GeV/amu Au, at B=2.7T. New concepts were developed, including detailed engineering design and cost estimates. A ''unicell'' contains a half-cell of both rings within a single He vessel. The unicell design is optimized for economical mass production. Survey pads welded to the laminations provide external fiducials to locate the magnet cores. Roller bearing self aligning supports accommodate cool-down shrinkage. The design tolerates relative motion of components resulting from longitudinal shrinkage in the about15 m long unicell without affecting performance. Magnetic and physical lengths are the same, eliminating waste space. ''Achromatic'' quadrupoles with sextupoles at both ends are located on a common precision beam tube which aligns and supports a pick-up electrode. The unicell accommodates longer dipoles compared to conventional designs, reducing B /SUB max'/ stored energy, and the volume of iron and superconductor. Applications to future machines will be discussed.

Unicell structure for superconducting storage rings

Energy Technology Data Exchange (ETDEWEB)

Danby, G.; DeVito, B.; Jackson, J.; Keohane, G.; Lee, Y.Y.; Phillips, R.; Plate, S.; Repeta, L.; Skaritka, J.; Smith, L.

1985-01-01

Mechanically integrated, magnetically decoupled storage rings were designed for a heavy ion collider for 100 GeV/amu Au, at B = 2.7T. New concepts were developed, including detailed engineering design and cost estimates. A ''unicell'' contains a half-cell of both rings within a single He vessel. The unicell design is optimized for economical mass production. Survey pads welded to the laminations provide external fiducials to locate the magnet cores. Roller bearing self aligning supports accommodate cool-down shrinkage. The design tolerates relative motion of components resulting from longitudinal shrinkage in the approx.15 m long unicell without affecting performance. Magnetic and physical lengths are the same, eliminating waste space. ''Achromatic'' quadrupoles with sextupoles at both ends are located on a common precision beam tube which aligns and supports a pick-up electrode. The unicell accommodates longer dipoles compared to conventional designs, reducing B/sub max/, stored energy, and the volume of iron and superconductor. Applications to future machines will be discussed.

Re-Imagining Doctoral Education: Professional Doctorates and beyond

Science.gov (United States)

Lee, Alison; Brennan, Marie; Green, Bill

2009-01-01

Portents of the demise of the Professional Doctorate have emerged in some recent policy and institutional circles in Australia, raising questions about the meaning and relevance of the Professional Doctorate in an era of "league tables" and research assessment in Australia. This article argues that such portents, based largely on narrow…

Doctors and pharmaceutical industry.

Science.gov (United States)

Beran, Roy G

2009-09-01

The pharmaceutical industry is seen as seducing doctors by providing expensive gifts, subsidising travel and underwriting practice expenses in return for those doctors prescribing products that otherwise they would not use. This paints doctors in a very negative light; suggests doctors are available to the highest bidder; implies doctors do not adequately act as independent agents; and that doctors are driven more by self-interest than by patient needs. Similar practices, in other industries, are accepted as normal business behaviour but it is automatically assumed to be improper if the pharmaceutical industry supports doctors. Should the pharmaceutical industry withdraw educational grants then there would be: fewer scientific meetings; reduced attendance at conferences; limited post graduate education; and a depreciated level of maintenance of professional standards. To suggest that doctors prescribe inappropriately in return for largesse maligns their integrity but where there is no scientific reason to choose between different treatments then there can be little argument against selecting the product manufactured by a company that has invested in the doctor and the question arises as to whether this represents bad medicine? This paper will examine what constitutes non-professional conduct in response to inducements by the pharmaceutical industry. It will review: conflict of interest; relationships between doctors and pharma and the consequences for patients; and the need for critical appraisal before automatically decrying this relationship while accepting that there remain those who do not practice ethical medicine.

Wanted--doctors who care.

Science.gov (United States)

Lovdal, L T; Pearson, R

1989-03-01

A study was conducted to determine what consumers value in doctors' behavior. Results indicate that consumers in the sample population studied prefer doctors who are friendly and caring as well as those who are technically competent. However, these respondents reported less favorable opinions about doctors' friendliness (i.e., affective behavior) than they did about doctors' competence (i.e., instrumental behavior).

The relative dietary importance of haem and non-haem iron

International Nuclear Information System (INIS)

Bezwoda, W.R.; Bothwell, T.H.; Charlton, R.W.; Torrance, J.D.; MacPhail, A.P.; Derman, D.P.; Mayet, F.

1983-01-01

A study was undertaken to find out the relative amounts of haem and non-haem iron absorbed from meals in which varying amounts of these substances were present. Four meals, each containing 6 mg of iron but with varying ratios of haem and non-haem iron, were fed to two groups of subjects, each group receiving two meals. The geometric mean percentage absorption of non-haem iron decreased from 18,0% (SD range 14,6-22,3%) to 6,4% (SD range 3,4-11,8%) as the non-haem iron content of the meal increased from 1,52 mg to 5,72 mg - there was therefore little variation in the actual amounts of non-haem iron absorbed from the different meals. In contrast, the geometric mean absorption of haem iron was approximately 20% from all four meals, although the haem iron content varied between 0,28 mg and 4,48 mg. The amount of haem iron absorbed was thus a linear function of the amount of haem iron in the meal. Two points emerged from the study. Firstly, the relative importance of haem iron in overall iron nutrition was confirmed. Secondly, the fact that the pattern of absorption in relation to dosage was so different from haem iron and non-haem iron suggested that a controlling mechanism for non-haem iron absorption may be located at the mucosal surface. This conclusion is based on the fact that haem iron, the percentage absorption of which was found to be independent of the size of the dose, is absorped into the mucosal cell when still contained within the porphyrin ring and the iron thus bypasses some controlling mechanism at the mucosal border

Australian doctors and the visual arts. Part 3. Doctor-artists in Victoria.

Science.gov (United States)

Hamilton, D G

1986-06-09

The contribution of doctors to the visual arts is being discussed in a series of six articles. The first two articles dealt with doctors and the visual arts in New South Wales. In this, the third, doctor-artists in Victoria are discussed.

Non-EEA-doctors in EEA-countries: doctors or cleaners?

NARCIS (Netherlands)

Herfs, Paul; Kater, L.; Haalboom, J.R.E.

2007-01-01

Background: Migration of non-EEA doctors to EEA-countries has become a common phenomenon. As coordination within the EEA has not yet been established, every EEA-country is re-inventing the wheel of assessment of foreign medical degrees and developing additional programmes for non-EEA doctors. There

Ring Theory

CERN Document Server

Jara, Pascual; Torrecillas, Blas

1988-01-01

The papers in this proceedings volume are selected research papers in different areas of ring theory, including graded rings, differential operator rings, K-theory of noetherian rings, torsion theory, regular rings, cohomology of algebras, local cohomology of noncommutative rings. The book will be important for mathematicians active in research in ring theory.

Talking to Your Doctor

Medline Plus

Full Text Available ... to Your Doctor , National Eye Institute (NEI) Español Aging Planning Your Doctor Visit , NIHSeniorHealth.gov Videos: Talking ... A Guide for Older People , National Institute on Aging (NIA) Talking With Your Doctor Presentation Toolkit , National ...

Superconducting wiggler magnets for beam-emittance damping rings

CERN Document Server

Schoerling, Daniel

2012-01-01

Ultra-low emittance beams with a high bunch charge are necessary for the luminosity performance of linear electron-positron colliders, such as the Compact Linear Collider (CLIC). An effective way to create ultra-low emittance beams with a high bunch charge is to use damping rings, or storage rings equipped with strong damping wiggler magnets. The remanent field of the permanent magnet materials and the ohmic losses in normal conductors limit the economically achievable pole field in accelerator magnets operated at around room temperature to below the magnetic saturation induction, which is 2.15 T for iron. In wiggler magnets, the pole field in the center of the gap is reduced further like the hyperbolic cosine of the ratio of the gap size and the period length multiplied by pi. Moreover, damping wiggler magnets require relatively large gaps because they have to accept the un-damped beam and to generate, at a small period length, a large magnetic flux density amplitude to effectively damp the beam emittance....

Hybrid permanent magnet quadrupoles for the Recycler Ring at Fermilab

International Nuclear Information System (INIS)

Brown, B.C.; Pruss, S.M.; Foster, G.W.; Glass, H.D.; Harding, D.J.; Jackson, G.R.; May, M.R.; Nicol, T.H.; Ostiguy, J.-F.; Schlabach, R.; Volk, J.T.

1997-10-01

Hybrid Permanent Magnet Quadrupoles are used in several applications for the Fermilab Recycler Ring and associated beam transfer lines. Most of these magnets use a 0.6096 m long iron shell and provide integrated gradients up to 1.4 T-m/m with an iron pole tip radius of 41.6 mm. A 58.4 mm pole radius design is also required. Bricks of 25. 4 mm thick strontium ferrite supply the flux to the back of the pole to produce the desired gradients (0.6 to 2.75 T/m). For temperature compensation, Ni-Fe alloy strips are interspersed between ferrite bricks to subtract flux in a temperature dependent fashion. Adjustments of the permeance of each pole using iron between the pole and the flux return shell permits the matching of pole potentials. Magnetic potentials of the poles are adjusted to the desired value to achieve the prescribed strength and field uniformity based on rotating coil harmonic measurements. Procurement, fabrication, pole potential adjustment, and measured fields will be reported

How To Talk to Your Doctor (and Get Your Doctor To Talk to You!). An Educational Workshop on Doctor Patient Communication = Como Hablarle a su Doctor (iY que su doctor le hable a usted!). Un seminario educativo sobre la comunicacion entre el doctor y el paciente.

Science.gov (United States)

Baylor Coll. of Medicine, Houston, TX.

This workshop, written in both English and Spanish, focuses on improving communication between physician and patient. In the workshop, the trainers will talk about "building bridges" between patient and doctor by understanding the doctor's role and his/her duty to the patient. According to the workshop, a person's doctor should…

Achieving a multi-band metamaterial perfect absorber via a hexagonal ring dielectric resonator

Science.gov (United States)

Li, Li-Yang; Wang, Jun; Du, Hong-Liang; Wang, Jia-Fu; Qu, Shao-Bo

2015-06-01

A multi-band absorber composed of high-permittivity hexagonal ring dielectric resonators and a metallic ground plate is designed in the microwave band. Near-unity absorptions around 9.785 GHz, 11.525 GHz, and 12.37 GHz are observed for this metamaterial absorber. The dielectric hexagonal ring resonator is made of microwave ceramics with high permittivity and low loss. The mechanism for the near-unity absorption is investigated via the dielectric resonator theory. It is found that the absorption results from electric and magnetic resonances where enhanced electromagnetic fields are excited inside the dielectric resonator. In addition, the resonance modes of the hexagonal resonator are similar to those of standard rectangle resonators and can be used for analyzing hexagonal absorbers. Our work provides a new research method as well as a solid foundation for designing and analyzing dielectric metamaterial absorbers with complex shapes. Project supported by the National Natural Science Foundation of China (Grant Nos. 61331005, 11204378, 11274389, 11304393, and 61302023), the Aviation Science Foundation of China (Grant Nos. 20132796018 and 20123196015), the Natural Science Foundation for Post-Doctoral Scientists of China (Grant Nos. 2013M532131 and 2013M532221), the Natural Science Foundation of Shaanxi Province, China (Grant No. 2013JM6005), and the Special Funds for Authors of Annual Excellent Doctoral Degree Dissertations of China (Grant No. 201242).

Report of the eRHIC Ring-Ring Working Group

Energy Technology Data Exchange (ETDEWEB)

Aschenauer, E. C. [Brookhaven National Lab. (BNL), Upton, NY (United States); Berg, S. [Brookhaven National Lab. (BNL), Upton, NY (United States); Blaskiewicz, M. [Brookhaven National Lab. (BNL), Upton, NY (United States); Brennan, M. [Brookhaven National Lab. (BNL), Upton, NY (United States); Fedotov, A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Fischer, W. [Brookhaven National Lab. (BNL), Upton, NY (United States); Litvinenko, V. [Brookhaven National Lab. (BNL), Upton, NY (United States); Montag, C. [Brookhaven National Lab. (BNL), Upton, NY (United States); Palmer, R. [Brookhaven National Lab. (BNL), Upton, NY (United States); Parker, B. [Brookhaven National Lab. (BNL), Upton, NY (United States); Peggs, S. [Brookhaven National Lab. (BNL), Upton, NY (United States); Ptitsyn, V. [Brookhaven National Lab. (BNL), Upton, NY (United States); Ranjbar, V. [Brookhaven National Lab. (BNL), Upton, NY (United States); Tepikian, S. [Brookhaven National Lab. (BNL), Upton, NY (United States); Trbojevic, D. [Brookhaven National Lab. (BNL), Upton, NY (United States); Willeke, F. [Brookhaven National Lab. (BNL), Upton, NY (United States)

2015-10-13

This report evaluates the ring-ring option for eRHIC as a lower risk alternative to the linac-ring option. The reduced risk goes along with a reduced initial luminosity performance. However, a luminosity upgrade path is kept open. This upgrade path consists of two branches, with the ultimate upgrade being either a ring-ring or a linac-ring scheme. The linac-ring upgrade could be almost identical to the proposed linac-ring scheme, which is based on an ERL in the RHIC tunnel. This linac-ring version has been studied in great detail over the past ten years, and its significant risks are known. On the other hand, no detailed work on an ultimate performance ring-ring scenario has been performed yet, other than the development of a consistent parameter set. Pursuing the ring-ring upgrade path introduces high risks and requires significant design work that is beyond the scope of this report.

Nursing doctoral education in Turkey.

Science.gov (United States)

Yavuz, Meryem

2004-10-01

Quality health care is an issue of concern worldwide, and nursing can and must play a major and global role in transforming the healthcare environment. Doctorally prepared nurses are very much needed in the discipline to further develop and expand the science, as well as to prepare its future educators, scholars, leaders, and policy makers. In 1968, the Master of Science in Nursing Program was initiated in Turkey, followed by the Nursing Doctoral Education Program in 1972. Six University Schools of Nursing provide nursing doctoral education. By the graduating year of 2001, 154 students had graduated with the Doctor of Philosophy in Nursing (Ph.D.), and 206 students were enrolled in related courses. Many countries in the world are systematically building various collaborative models in their nursing doctoral education programs. Turkey would like to play an active role in creating collaborative nursing doctoral education programs with other countries. This paper centres on the structure and model of doctoral education for nurses in Turkey. It touches on doctoral programs around the world; describes in detail nursing doctoral education in Turkey, including its program structure, admission process, course units, assessment strategies and dissertation procedure; and discusses efforts to promote Turkey as a potential partner in international initiatives to improve nursing doctoral education.

Doctoral education in the nuclear sector; La formacion de doctores en el sector nuclear

Energy Technology Data Exchange (ETDEWEB)

Minguez, E.

2013-03-01

Doctoral aducation is a major priority for European universities. In the context of the Bologna Process the importance of doctoral education as the third cycle of higher education and the first stage of a young researchers career, and thus in linking the European Higher Education and Research Areas, was first highlighted in the 2003 Berlin Report. The core component of doctoral training is the advancement of knowledge through original research. considering the need for structured doctoral programs and the need for transparent supervision and assessment, we note that the normal workload of the third cycle in most countries would correspond 3-4 years full time. This is spirit of the new Spanish Doctoral Law. Then, universities should ensure that their doctoral programmes promote interdisciplinary training and the development of transferable skills, thus meeting the needs of the wider employment market. We need to achieve and overall increase in the numbers of doctoral candidates taking up research careers as early stage researchers and also increase the employability as a normal way as it is the case of other advance countries. In Spain, universities with doctoral nuclear programmes and the CIEMAT, with the sponsorship of the nuclear sector, a doctoral school in nuclear science and engineering should be created to enhance the research careers of Young students for the future of nuclear activities in Spain. (Author)

Radiation environment of proton accelerators and storage rings

Energy Technology Data Exchange (ETDEWEB)

Stevenson, G R

1976-03-08

These lecture notes survey the physical processes that give rise to the stray-radiation environment of proton synchrotrons and storage rings, with emphasis on their importance for radiation protection. The origins of the prompt radiation field (which disappears when the accelerator is switched off) are described in some detail: proton-nucleus interactions, extranuclear cascades, muon generation and transport. The effects of induced radioactivity in the accelerator structure and surroundings, notably in iron, concrete, air, and water, are discussed, and methods for monitoring hadrons in the radiation environment outside the accelerator are listed. Seventy-six references to the literature are included.

[Job satisfaction among Norwegian doctors].

Science.gov (United States)

Nylenna, Magne; Aasland, Olaf Gjerløw

2010-05-20

Doctors' job satisfaction has been discussed internationally in recent years based on reports of increasing professional dissatisfaction. We have studied Norwegian doctors' job satisfaction and their general satisfaction with life. A survey was conducted among a representative sample of practicing Norwegian doctors in 2008. The validated 10-item Job Satisfaction Scale was used to assess job satisfaction. 1,072 (65 %) doctors responded. They reported a mean job satisfaction of 5.3 on a scale from 1 (very dissatisfied) to 7 (very satisfied). Job satisfaction increased with increasing age. Private practice specialists reported the highest level of job satisfaction (5.8), and general practitioners reported higher job satisfaction (5.5) than hospital doctors (5.1). Among specialty groups, community doctors scored highest (5.6) and doctors in surgical disciplines lowest (5.0). While long working hours was negatively correlated with job satisfaction, the perception of being professionally updated and having part-time affiliation(s) in addition to a regular job were positively correlated with job satisfaction. 52.9 % of doctors reported a very high general satisfaction. Norwegian doctors have a high level of job satisfaction. Satisfaction with life in general is also high and at least in line with that in the Norwegian population.

Correlations between the anatomical traits of Gymnocladus canadensis Lam. in heartwood and sapwood of early- and latewood zones of growth rings

OpenAIRE

Jokanović Dušan; Vilotić Dragica; Mitrović Suzana; Miljković Danijela; Rebić Milan; Stanković Dragica; Nikolić Vesna

2015-01-01

This paper shows correlations between vessel characteristics and differences in growth-ring width in heartwood and sapwood. Analyzed samples were from an iron-wood tree (Gymnocladus canadensis Lam.) that grew in the Mužljanski Rit area, of the Srpska Crnja municipality in Serbia. According to previous research, it was deduced that Gymnocladus canadensis Lam. belongs to ring-porous species with big vessel lumen in the earlywood zone and thicker cell walls in...

Genetic/metabolic effect of iron metabolism and rare anemias

Directory of Open Access Journals (Sweden)

Clara Camaschella

2013-03-01

Full Text Available Advances in iron metabolism have allowed a novel classification of iron disorders and to identify previously unknown diseases. These disorders include genetic iron overload (hemochromatosis and inherited iron-related anemias, in some cases accompanied by iron overload. Rare inherited anemias may affect the hepcidin pathway, iron absorption, transport, utilization and recycling. Among the genetic iron-related anemias the most common form is likely the iron-refractory iron-deficiency anemia (IRIDA, due to mutations of the hepcidin inhibitor TMPRSS6 encoding the serine protease matriptase-2. IRIDA is characterized by hepcidin up-regulation, decrease iron absorption and macrophage recycling and by microcytic- hypochromic anemia, unresponsive to oral iron. High serum hepcidin levels may suggest the diagnosis, which requires demonstrating the causal TMPRSS6 mutations by gene sequencing. Other rare microcytic hypochromic anemias associated with defects of iron transport-uptake are the rare hypotransferrinemia, and DMT1 and STEAP3 mutations. The degree of anemia is variable and accompanied by secondary iron overload even in the absence of blood transfusions. This is due to the iron-deficient or expanded erythropoiesis that inhibits hepcidin transcription, increases iron absorption, through the erythroid regulator, as in untransfused beta-thalassemia. Sideroblastic anemias are due to decreased mitochondrial iron utilization for heme or sulfur cluster synthesis. Their diagnosis requires demonstrating ringed sideroblasts by Perl’s staining of the bone marrow smears. The commonest X-linked form is due to deltaamino- levulinic-synthase-2-acid (ALAS2 mutations. The recessive, more severe form, affects SLC25A38, which encodes a potential mitochondrial importer of glycine, an amino acid essential for ALA synthesis and thus results in heme deficiency. Two disorders affect iron/sulfur cluster biogenesis: deficiency of the ATP-binding cassette B7 (ABCB7 causes X

A Qualitative Examination of Challenges Influencing Doctoral Students in an Online Doctoral Program

Science.gov (United States)

Deshpande, Anant

2016-01-01

The main purpose of the study was to investigate the challenges faced by students in completion of an online doctoral program at the University of Liverpool, Online Doctoral Business Administration program. We analyse the responses of 91 doctoral students in an online DBA program. Based on the exploratory qualitative study themes were developed…

A New Version of an Old Demonstration Experiment Using the Elihu Thomson Jumping Ring Apparatus

Science.gov (United States)

Foster, Theodore; Cary, Arthur; Mottmann, John; van Wyngaarden, Willem

2016-01-01

The goal of this paper is to make more widely known an eye-catching demonstration experiment in which a hanging conducting can is made to spin when placed near the iron core of an Elihu Thomson "jumping ring" apparatus. An explanation is given based on Faraday's law of induced voltages and the magnetic forces due to the core's fields…

Challenges to the Doctoral Journey: a Case of Female Doctoral Students from Ethiopia

Directory of Open Access Journals (Sweden)

Asamenew Demessie Bireda

2015-11-01

Full Text Available This study aimed to investigate some challenges female doctoral students experience in their doctoral journey. The study used a qualitative design and structured interviews. The theoretical framework that guided the study was that of Urie Bronfenbrenner’s ecosystemic theory. A purposely selected sample of five female doctoral students from the University of South Africa Ethiopia campus participated in the study. The results identified three major areas of concern such as: academic, psychosocial and home/work related. Specifically, female doctoral students reported concerns surrounding quality of supervision support, inadequate academic skill, nature or system of education, stress, motivation, isolation, balancing personal and professional life, relationship problems, home and work related concerns. Hence, universities must provide opportunities and resourceful strategies to meet the challenges posed by women scholars in the doctoral journey.

The Mechanics of a Chain or Ring of Spherical Magnets

KAUST Repository

Hall, Cameron L.; Vella, Dominic; Goriely, Alain

2013-01-01

Strong magnets, such as neodymium-iron-boron magnets, are increasingly being manufactured as spheres. Because of their dipolar characters, these spheres can easily be arranged into long chains that exhibit mechanical properties reminiscent of elastic strings or rods. While simple formulations exist for the energy of a deformed elastic rod, it is not clear whether or not they are also appropriate for a chain of spherical magnets. In this paper, we use discrete-to-continuum asymptotic analysis to derive a continuum model for the energy of a deformed chain of magnets based on the magnetostatic interactions between individual spheres. We find that the mechanical properties of a chain of magnets differ significantly from those of an elastic rod: while both magnetic chains and elastic rods support bending by change of local curvature, nonlocal interaction terms also appear in the energy formulation for a magnetic chain. This continuum model for the energy of a chain of magnets is used to analyze small deformations of a circular ring of magnets and hence obtain theoretical predictions for the vibrational modes of a circular ring of magnets. Surprisingly, despite the contribution of nonlocal energy terms, we find that the vibrations of a circular ring of magnets are governed by the same equation that governs the vibrations of a circular elastic ring. Copyright © by SIAM.

Promotion of hydrogen entry into iron from NaOH solution by iron-oxygen species

International Nuclear Information System (INIS)

Flis-Kabulska, I.; Flis, J.; Zakroczymski, T.

2007-01-01

This study was carried out to explain reasons of the enhanced hydrogen entry into iron at low polarisations. Hydrogen permeation rate (HPR) through a 35-μm thick iron membrane was studied with the electrochemical technique in 0.1 M NaOH at 25 o C. A rotating split-ring disk electrode was used to detect soluble Fe(II) species. Enhanced hydrogen entry (HPR peaks) was observed at low cathodic and low anodic polarisations during voltammetric cycling, and also during galvanostatic anodic polarisation applied after cathodic charging. HPR peaks occurred at potentials from about -1.2 to -0.9 V (NHE) which were more cathodic than the potentials of thermodynamic stability of Fe(OH) 2 or Fe 3 O 4 , and of the formation of soluble Fe(II) species. It has been suggested that the enhanced hydrogen entry is associated with the presence of FeOH ad . In this species oxygen is bound with hydrogen (oxo-hydride), hence it can be supposed that the mechanism of its promoting effect can be similar to that of hydrides of other elements of the VIb group

ASSOCIATIVE RINGS SOLVED AS LIE RINGS

Directory of Open Access Journals (Sweden)

M. B. Smirnov

2011-01-01

Full Text Available The paper has proved that an associative ring which is solvable of a n- class as a Lie ring has a nilpotent ideal of the nilpotent class not more than 3×10n–2  and a corresponding quotient ring satisfies an identity [[x1, x2, [x3, x4

A marketing clinical doctorate programs.

Science.gov (United States)

Montoya, Isaac D; Kimball, Olive M

2007-01-01

Over the past decade, clinical doctorate programs in health disciplines have proliferated amid both support and controversy among educators, professional organizations, practitioners, administrators, and third-party payers. Supporters argue that the explosion of new knowledge and increasing sophistication of technology have created a need for advanced practice models to enhance patient care and safety and to reduce costs. Critics argue that necessary technological advances can be incorporated into existing programs and believe that clinical doctorates will increase health care costs, not reduce them. Despite the controversy, many health disciplines have advanced the clinical doctorate (the most recent is the doctor of nursing practice in 2004), with some professions mandating the doctorate as the entry-level degree (i.e., psychology, pharmacy, audiology, and so on). One aspect of the introduction of clinical doctoral degrees has been largely overlooked, and that is the marketing aspect. Because of marketing considerations, some clinical doctorates have been more successfully implemented and accepted than others. Marketing is composed of variables commonly known as "the four P's of marketing": product, price, promotion, and place. This report explores these four P's within the context of clinical doctorates in the health disciplines.

Interventions for improving patients' trust in doctors and groups of doctors.

Science.gov (United States)

Rolfe, Alix; Cash-Gibson, Lucinda; Car, Josip; Sheikh, Aziz; McKinstry, Brian

2014-03-04

Trust is a fundamental component of the patient-doctor relationship and is associated with increased satisfaction, adherence to treatment, and continuity of care. Our 2006 review found little evidence that interventions improve patients' trust in their doctor; therefore an updated search was required to find out if there is further evidence of the effects of interventions that may improve trust in doctors or groups of doctors. To update our earlier review assessing the effects of interventions intended to improve patients' trust in doctors or a group of doctors. In 2003 we searched the Cochrane Central Register of Controlled Trials (CENTRAL, The Cochrane Library), MEDLINE, EMBASE, Health Star, PsycINFO, CINAHL, LILACS, African Trials Register, African Health Anthology, Dissertation Abstracts International and the bibliographies of studies selected for inclusion. We also contacted researchers active in the field. We updated and re-ran the searches on available original databases (Cochrane Central Register of Controlled Trials (CENTRAL, The Cochrane Library issue 2, 2013), MEDLINE (OvidSP), EMBASE (OvidSP), PsycINFO (OvidSP), CINAHL (Ebsco)) as well as Proquest Dissertations and Current Contents for the period 2003 to 18 March 2013. Randomised controlled trials (RCTs), quasi-randomised controlled trials, controlled before and after studies, and interrupted time series of interventions (informative, educational, behavioural, organisational) directed at doctors or patients (or carers) where trust was assessed as a primary or secondary outcome. Two review authors independently extracted data and assessed the risk of bias of included studies. Where mentioned, we extracted data on adverse effects. We synthesised data narratively. We included 10 randomised controlled trials (including 7 new trials) involving 11,063 patients. These studies were all undertaken in North America, and all but two involved primary care.  As expected, there was considerable heterogeneity between

Spin doctoring

OpenAIRE

Vozková, Markéta

2011-01-01

1 ABSTRACT The aim of this text is to provide an analysis of the phenomenon of spin doctoring in the Euro-Atlantic area. Spin doctors are educated people in the fields of semiotics, cultural studies, public relations, political communication and especially familiar with the infrastructure and the functioning of the media industry. Critical reflection of manipulative communication techniques puts spin phenomenon in historical perspective and traces its practical use in today's social communica...

Mapping Ring Particle Cooling across Saturn's Rings with Cassini CIRS

Science.gov (United States)

Brooks, Shawn M.; Spilker, L. J.; Edgington, S. G.; Pilorz, S. H.; Deau, E.

2010-10-01

Previous studies have shown that the rings' thermal inertia, a measure of their response to changes in the thermal environment, varies from ring to ring. Thermal inertia can provide insight into the physical structure of Saturn's ring particles and their regoliths. Low thermal inertia and quick temperature responses are suggestive of ring particles that have more porous or fluffy regoliths or that are riddled with cracks. Solid, coherent particles can be expected to have higher thermal inertias (Ferrari et al. 2005). Cassini's Composite Infrared Spectrometer has recorded millions of spectra of Saturn's rings since its arrival at Saturn in 2004 (personal communication, M. Segura). CIRS records far infrared radiation between 10 and 600 cm-1 (16.7 and 1000 µm) at focal plane 1 (FP1), which has a field of view of 3.9 mrad. Thermal emission from Saturn's rings peaks in this wavelength range. FP1 spectra can be used to infer ring temperatures. By tracking how ring temperatures vary, we can determine the thermal inertia of the rings. In this work we focus on CIRS observations of the shadowed portion of Saturn's rings. The thermal budget of the rings is dominated by the solar radiation absorbed by its constituent particles. When ring particles enter Saturn's shadow this source of energy is abruptly cut off. As a result, ring particles cool as they traverse Saturn's shadow. From these shadow observations we can create cooling curves at specific locations across the rings. We will show that the rings' cooling curves and thus their thermal inertia vary not only from ring to ring, but by location within the individual rings. This research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with NASA. Copyright 2010 California Institute of Technology. Government sponsorship acknowledged.

Working with doctors and nurses

Science.gov (United States)

... with doctors and nurses Working with doctors and nurses Answering questions, filling out papers, getting poked and ... to pay? What questions will the doctor or nurse ask? top It’s a good idea to know ...

Intolerance and Violence Against Doctors.

Science.gov (United States)

Singh, Meharban

2017-10-01

Intolerance and grouse against doctors is a global phenomenon but India seems to lead the world in violence against doctors. According to World Health Organization, about 8-38% healthcare workers suffer physical violence at some point in their careers. Many more are verbally abused or threatened. Public is almost behaving like health sector terrorists. The spate of increasing attacks on doctors by damaging their property and causing physical injury is not acceptable by any civilized society. The public is becoming increasingly intolerant to a large number of social issues because of poor governance and vote bank politics. There is a need to arrest the development of further distrust between doctors and their patients/relatives, otherwise it will compromise all achievements of medical science and adversely affect healing capabilities of doctors. Rude and aggressive behavior of the patients or their family members, and arrogant and lackadaisical approach of the doctor, adversely affects the doctor-patient relationship and the outcome of the patient. The doctors, hospital administration and government must exercise "zero tolerance" with respect to acts of violence against healthcare professionals. It is possible to reduce the incidence of intolerance against doctors but difficult to eliminate it completely. The healthcare providers should demonstrate greater compassion and empathy with improved communication skills. The hospitals must have adequate infrastructure, facilities and staff to handle emergencies without delay and with due confidence and skills. The security of healthcare providers, especially in sensitive areas, should be improved by having adequate number of security guards, frisking facilities, extensive CCTV network and availability of "Quick response team" to handle unruly mob. In case of any grievances for alleged mismanagement, the public should handle the situation in a civilized manner and seek redressal through Medical Protection Act and legal

Persisting Dreams: The Impact of the Doctoral Socialization Process on Latina Post-Doctoral Career Aspirations

OpenAIRE

Westerband, Yamissette

2016-01-01

Latinas are underrepresented within the professorate and within doctoral programs, particularly within Research Intensive Institutions. This dissertation explores how the doctoral socialization process impacts the pipeline from the Ph.D. to scholarly careers for Latinas in Research universities. Given the low numbers of representation and production at the doctoral level for Latinas, what happens when they do enter Ph.D. programs? Their doctoral experience must be marked in one way or anot...

Doctor William Gunn (1804-1890): From the South Pacific Islands to Chatham Royal Dockyard.

Science.gov (United States)

Biddle, Richard

2016-11-24

Doctor William Gunn had a long and varied career in the Royal Navy. After spending time on anti-slavery patrols along the west coast of Africa, he was posted to the south Pacific. At Pitcairn Island, he treated the inhabitants during an influenza epidemic, proving himself to be a determined and dedicated practitioner. Subsequently, he was appointed head of the medical department at Chatham Royal Dockyard (1859-1865), an appointment that coincided with the final stages of the Royal Navy's transition from sail and wood to steam and iron. The impact of these changes on the health of dockworkers was quickly felt at Chatham, and Gunn found himself in charge during the building of the first iron warship in a royal dockyard. His story thus offers a window through which to observe a practitioner confronting the health issues and medical uncertainties thrown up by technological change in the Victorian era. © The Author(s) 2016.

The radiation environment of proton accelerators and storage rings

International Nuclear Information System (INIS)

Stevenson, G.R.

1976-01-01

These lecture notes survey the physical processes that give rise to the stray-radiation environment of proton synchrotrons and storage rings, with emphasis on their importance for radiation protection. The origins of the prompt radiation field (which disappears when the accelerator is switched off) are described in some detail: proton-nucleus interactions, extranuclear cascades, muon generation and transport. The effects of induced radioactivity in the accelerator structure and surroundings, notably in iron, concrete, air, and water, are discussed and methods for monitoring hadrons in the radiation environment outside the accelerator are listed. Seventy-six references to the literature are included. (Author)

Skill set development of doctoral and post-doctoral graduates in life sciences.

Science.gov (United States)

Kanwar, R S

2010-01-01

Doctoral and post-doctoral training programs at leading research universities in the USA are highly important in generating the much needed knowledge in science, technology, engineering, and mathematics for keeping rural and urban economies strong and societies healthy and prosperous. In addition, innovative graduate and post doctoral research programs are the driving engines of the success of U.S. economy and have made the U.S. the most successful model of generating new knowledge in the broader areas of life sciences (and agricultural education, research, and extension). We need to do everything in our power to make these training programs innovative, collaborative, independent, and resourceful so that students are trained in different disciplines making them more flexible within a range of challenges and opportunities. The training programs must empower students to solve complex and interdisciplinary problems of the society in 21st century and make our students competitive within a global economic system, to improve the health of the nation's economy. If our land grant schools and institutions of higher learning are not preparing doctoral students to be globally competitive scientists to create new knowledge and technologies to solve complex and interdisciplinary problems of the 21st century, then either we need to redefine the mission of our land grant system or we risk losing our role to serve the public and industry effectively. Doctoral and post doctoral students should be given the needed skills and experiences to prepare them for tenure track faculty jobs at leading US Universities in the 21st century as well as prepare them for the world outside of academia. I would say minimum competency skills are needed as "bare survival skills" for all doctoral students to become successful after obtaining PhD degrees. Today's PhD students will be working in a global but highly competitive, rapidly changing, and complex world. It is no longer enough to be a good

Application of welding technology TIG to cast iron repair

Directory of Open Access Journals (Sweden)

J. Szajnar

2008-03-01

Full Text Available Rcpnir nT cnst imn clcrncnts rcaEi7c in ordcr to cut out a sltpcrficial casting dcfcc~s, Dcrccis clccrcasc ;z usahiliny nt ca~rings torconsin~ciionaal pplication m d incrcasc a manufacturing costs. Thc pnpcr prcsclrls rcscarch rcsufts or itsc o r '1'IG - Tun~stcnI ncn Gas alsokncwn RS GTA - Gas Tunpstcn Arc surfacin: hy wclding on colt1 and half-hot to rcpnls chrninil~m cnsr iron EN-GJN-XCrlS withcliro~niurnc ontcnt nhout 3 5% and nodular ({vi~hF crritic-pcarli~ic matrix cast iron EN-GJS-500-7. Thc rcsttl~o r invcsiigations showpossibility of cns~ings rcpais hy put on derccts a good quality padding wclds, which havc compamhlc nr hcricr propcrtlcs than hnsc~naicrial.

Transcriptome Analysis of the Intracellular Facultative Pathogen Piscirickettsia salmonis: Expression of Putative Groups of Genes Associated with Virulence and Iron Metabolism.

Directory of Open Access Journals (Sweden)

Alvaro Machuca

Full Text Available The intracellular facultative bacteria Piscirickettsia salmonis is one of the most important pathogens of the Chilean aquaculture. However, there is a lack of information regarding the whole genomic transcriptional response according to different extracellular environments. We used next generation sequencing (NGS of RNA (RNA-seq to study the whole transcriptome of an isolate of P. salmonis (FAVET-INBIOGEN using a cell line culture and a modified cell-free liquid medium, with or without iron supplementation. This was done in order to obtain information about the factors there are involved in virulence and iron acquisition. First, the isolate was grown in the Sf21 cell line; then, the bacteria were cultured into a cell-free liquid medium supplemented or not with iron. We identified in the transcriptome, genes associated with type IV secretion systems, genes related to flagellar structure assembly, several proteases and sigma factors, and genes related to the development of drug resistance. Additionally, we identified for the first time several iron-metabolism associated genes including at least two iron uptake pathways (ferrous iron and ferric iron uptake that are actually expressed in the different conditions analyzed. We further describe putative genes that are related with the use and storage of iron in the bacteria, which have not been previously described. Several sets of genes related to virulence were expressed in both the cell line and cell-free culture media (for example those related to flagellar structure; such as basal body, MS-ring, C-ring, proximal and distal rod, and filament, which may play roles in other basic processes rather than been restricted to virulence.

The synthesis of chlorophyll-a biosynthetic precursors and methyl substituted iron porphyrins

International Nuclear Information System (INIS)

Matera, K.M.

1988-01-01

The biosynthetic intermediates were incubated in a plant system. The activity levels calculated show that magnesium 6-acrylate porphyrins and one of the magnesium 6-β-hydroxypropionate porphyrins are not intermediates. In addition, plant systems incubated with 18 O 2 were found to synthesize magnesium 2,4-divinyl pheoporphyrin-a 5 incorporated with 18 O at the 9-carbonyl oxygen. Mass spectroscopy confirmed the presence of the oxygen label, thus eliminating one of two hypothesized pathways to chlorophyll-a. An overall description is given of iron porphyrins and iron porphyrin containing proteins. The function of the propionic side chains of the heme prosthetic group during electron transport reactions will be investigated. The synthesis of a series of iron(III) hexamethyl porphyrins with increasingly longer substituents in the remaining two peripheral positions of the porphyrin is described. Models for NMR studies of iron chlorin containing enzymes are discussed. Iron(III) pyropheophorbide-a and methyl pyropheophorbide-a were synthesized in addition to 5-CD 3 , 10-CD 2 iron(III) pyropheophorbide-a and methyl pyropheophorbide-a. Together, these pyropheophorbides were used to assign NMR resonances and ultimately provide a model for other iron chlorins. The synthesis of nickel(II) anhydro-mesorhodoporphyrin from zinc(III) anhydromesorhodochlorin is described; this nickel porphyrin was used as a standard for ring current calculations of reduced nickel analogs of anhydromesorhodoporphyrin

Reexamining the Structure of Hemingway's "The Doctor and the Doctor's Wife."

Science.gov (United States)

Mulvey, James

2003-01-01

Considers how Hemingway's "The Doctor and the Doctor's Wife" is a model of Edgar Allan Poe's aesthetic of the short story. Examines this work on many levels. Concludes that great writers, such as Ernest Hemingway, challenge readers to find the clues, to connect the dots, to pay attention to the "little details." (SG)

Coaching doctoral students

DEFF Research Database (Denmark)

Godskesen, Mirjam Irene; Kobayashi, Sofie

2016-01-01

In this paper we focus on individual coaching carried out by an external coach as a new pedagogical element that can impact doctoral students’ sense of progress in doctoral education. The study used a mixed methods approach in that we draw on quantitative and qualitative data from the evaluation...... impact the supervisor – student relationship in a positive way....

Iron and stony-iron meteorites

DEFF Research Database (Denmark)

Ruzicka, Alex M.; Haack, Henning; Chabot, Nancy L.

2017-01-01

By far most of the melted and differentiated planetesimals that have been sampled as meteorites are metal-rich iron meteorites or stony iron meteorites. The parent asteroids of these meteorites accreted early and differentiated shortly after the solar system formed, producing some of the oldest...... and interpretations for iron and stony iron meteorites (Plate 13.1). Such meteorites provide important constraints on the nature of metal-silicate separation and mixing in planetesimals undergoing partial to complete differentiation. They include iron meteorites that formed by the solidification of cores...... (fractionally crystallized irons), irons in which partly molten metal and silicates of diverse types were mixed together (silicate-bearing irons), stony irons in which partly molten metal and olivine from cores and mantles were mixed together (pallasites), and stony irons in which partly molten metal...

Finding the Right Doctor

Science.gov (United States)

... certified hospital Communicating with Healthcare Professionals for Caregivers Consumer Health Care • Home • Health Insurance Information • Your Healthcare Team Introduction Finding the Right Doctor Talking to Your Doctor Getting a Second ...

Environmental application of millimetre-scale sponge iron (s-Fe{sup 0}) particles (I): Pretreatment of cationic triphenylmethane dyes

Energy Technology Data Exchange (ETDEWEB)

Ju, Yongming, E-mail: juyongming@scies.org [South China Institute of Environmental Sciences, the Ministry of Environmental Protection of PRC, Guangzhou 510655 (China); Liu, Xiaowen, E-mail: liuxiaowen@scies.org [South China Institute of Environmental Sciences, the Ministry of Environmental Protection of PRC, Guangzhou 510655 (China); Li, Zhaoyong; Kang, Juan; Wang, Xiaoyan; Zhang, Yukui; Fang, Jiande [South China Institute of Environmental Sciences, the Ministry of Environmental Protection of PRC, Guangzhou 510655 (China); Dionysiou, Dionysios D., E-mail: dionysios.d.dionysiou@uc.edu [Environmental Engineering and Science Program, University of Cincinnati, Cincinnati, OH 45221-0012 (United States)

2015-02-11

Graphical abstract: - Highlights: • Millimetric s-Fe{sup 0} particles effectively reduce BG, MG, CV, and EV dyes. • s-Fe{sup 0} displays similar contaminant removal efficiency compared to nZVI. • s-Fe{sup 0} shows greater economic advantages than nZVI, iron powder, and iron scurf. • The reductive mechanism of BG over s-Fe{sup 0} under US condition is elucidated. - Abstract: To investigate the removal capability of millimetric zero valent iron (mmZVI), sponge iron (s-Fe{sup 0}) particles were characterized with XRD, XPS, TEM, HRSEM and EDS techniques. Moreover, the roles of particle size, catalyst dosage, dye concentration, mixing conditions (e.g. ultrasound (US), stirring or shaking), and regeneration treatment were studied with the removal of cationic triphenylmethane dyes. Notably, the reduction process was also revealed as compared to nanoscale zero valent iron (nZVI), microscale iron power, and iron scurf. Furthermore, the reductive mechanism was exemplified with brilliant green. The results demonstrated that (1) the synergetic effect between US and s-Fe{sup 0} greatly enhanced the removal of dyes, (2) the dosage of preferred s-Fe{sup 0} (1–3 mm) particles was optimized as 30.0 g/L; (3) reuse cycles of s-Fe{sup 0} catalyst were enhanced with the assistance of diluted HCl solution; (4) the main degradation routes included the cleavage of conjugated structure reactions, N-de-ethylation reactions, hydroxylation reactions, the removal of benzene ring reactions, and opening ring reactions. Accordingly, the pretreatment of aqueous solution over s-Fe{sup 0} was hypothesized to achieve mainly through direct reduction reaction by electron transfer and indirect reductive reactions by the highly activated hydrogen atom. Additionally, decoration with noble metals was utilized to reveal the reaction mechanism.

Australian doctors and the visual arts. Part 1. Doctor-artists in New South Wales.

Science.gov (United States)

Hamilton, D G

Since Europeans first settled in Australia their doctors have been interested in the visual arts. Some have been hobby painters and sculptors, a few with great distinction. Some have been gallery supporters and administrators. A few have written art books. Some have been outstanding photographers. Of the larger number of doctors who have collected art, only those are mentioned who have made their collections public or have made important donations to galleries. The subject of Australian doctors and the visual arts will be discussed in six articles in this and following issues of the journal. The first deals with doctor-artists in New South Wales.

Field quality issues in iron-dominated dipoles at low fields

International Nuclear Information System (INIS)

Brown, B.C.

1996-10-01

In order to help assess the usable dynamic range of iron-dominated dipoles, field shape data at low field on several Fermi-lab accelerator dipole designs are presented. Emphasis is placed on the systematic and random values of the low field sextupole since it is the first ''allowed'' field error. The Main Injector dipoles provide four times smaller sextupole and more than 20 times less sextupole hysteresis than earlier designs for the Main Ring

The Rise of Professional Doctorates: Case Studies of the Doctorate in Education in China, Iceland and Australia

Science.gov (United States)

Wildy, Helen; Peden, Sanna; Chan, Karyn

2015-01-01

Doctoral education is going through a period of transition. This transition is evident in the many varieties of doctoral degrees currently offered in higher education institutions worldwide, from the traditional research-based Doctor of Philosophy (PhD) to the Professional Doctorate and the New Route PhD. This article reports on a study which…

Healthy Doctors – Sick Medicine

Directory of Open Access Journals (Sweden)

Olaf Gjerløw Aasland

2015-05-01

Full Text Available Doctors are among the healthiest segments of the population in western countries. Nevertheless, they complain strongly of stress and burnout. Their own explanation is deprofessionalisation: The honourable art of doctoring has been replaced by standardised interventions and production lines; professional autonomy has withered. This view is shared by many medical sociologists who have identified a “golden age of medicine,” or “golden age of doctoring,” starting after World War II and declining around 1970. This article looks at some of the central sociological literature on deprofessionalisation, particularly in a perspective of countervailing powers. It also looks into another rise-and-fall model, proposed by the medical profession itself, where the fall in professional power was generated by the notion that there are no more white spots to explore on the map of medicine. Contemporary doctoring is a case of cognitive dissonance, where the traditional doctor role seems incompatible with modern health care.Keywords: deprofessionalisation, professional autonomy, cognitive dissonance, golden age of doctoring

The development of online doctor reviews in China: an analysis of the largest online doctor review website in China.

Science.gov (United States)

Hao, Haijing

2015-06-01

Since the time of Web 2.0, more and more consumers have used online doctor reviews to rate their doctors or to look for a doctor. This phenomenon has received health care researchers' attention worldwide, and many studies have been conducted on online doctor reviews in the United States and Europe. But no study has yet been done in China. Also, in China, without a mature primary care physician recommendation system, more and more Chinese consumers seek online doctor reviews to look for a good doctor for their health care concerns. This study sought to examine the online doctor review practice in China, including addressing the following questions: (1) How many doctors and specialty areas are available for online review? (2) How many online reviews are there on those doctors? (3) What specialty area doctors are more likely to be reviewed or receive more reviews? (4) Are those reviews positive or negative? This study explores an empirical dataset from Good Doctor website, haodf.com—the earliest and largest online doctor review and online health care community website in China—from 2006 to 2014, to examine the stated research questions by using descriptive statistics, binary logistic regression, and multivariate linear regression. The dataset from the Good Doctor website contained 314,624 doctors across China and among them, 112,873 doctors received 731,543 quantitative reviews and 772,979 qualitative reviews as of April 11, 2014. On average, 37% of the doctors had been reviewed on the Good Doctor website. Gynecology-obstetrics-pediatrics doctors were most likely to be reviewed, with an odds ratio (OR) of 1.497 (95% CI 1.461-1.535), and internal medicine doctors were less likely to be reviewed, with an OR of 0.94 (95% CI 0.921-0.960), relative to the combined small specialty areas. Both traditional Chinese medicine doctors and surgeons were more likely to be reviewed than the combined small specialty areas, with an OR of 1.483 (95% CI 1.442-1.525) and an OR of 1

Black rings

International Nuclear Information System (INIS)

Emparan, Roberto; Reall, Harvey S

2006-01-01

A black ring is a five-dimensional black hole with an event horizon of topology S 1 x S 2 . We provide an introduction to the description of black rings in general relativity and string theory. Novel aspects of the presentation include a new approach to constructing black ring coordinates and a critical review of black ring microscopics. (topical review)

Hybrid permanent magnet gradient dipoles for the recycler ring at Fermilab

International Nuclear Information System (INIS)

Brown, B.C.; Dimarco, J.; Foster, G.W.; Glass, H.D.; Haggard, J.E.; Harding, D.J.; Jackson, G.R.; May, M.R.; Nicol, T.H.; Ostiguy, J.-F.; Schlabach, R.; Volk, J.T.

1997-11-01

Hybrid permanent magnets provide the magnetic fields for an anti- proton storage ring which is under construction at Fermilab. Using a combined function lattice, gradient magnets provide the bending, focusing and sextupole correction for the regular cells. Shorter magnets without sextupole are used in dispersion suppressor cells. These magnets use a 4.7 m ( 3 m) long iron shell for flux return, bricks of 25.4 mm thick strontium ferrite supply the flux and transversely tapered iron poles separated by aluminum spacers set the shape of the magnetic field. Central fields of 0.14 T with gradients of ∼6%/inch (∼13%/inch) are required. Field errors are expected to be less than 10 -4 of the bend field over an aperture of ±40 mm (horizontal) x ±20 mm (vertical). Design, procurement, fabrication, pole potential adjustment, field shape trimming and measured fields will be reported

Perceptions of doctors on being treated by a doctor just completing the house job.

Science.gov (United States)

Ahmad, Amina; Haque Shaikh, Siraj Ul; Tayyab, Muhammad; Gardezi, Javed Raza

2014-12-01

To determine the percentage of medical teachers and fresh doctors who feel that graduating doctors are competent or incompetent to handle common ailments and to evaluate the reasons for their perceptions. Sequential mixed method. First phase extending from December 2010 to December 2011 and second phase was conducted in March 2014. First phase comprised electronic distribution of questionnaire to 100 medical teachers and fresh doctors working in hospitals attached with 5 private and 5 public sector medical colleges of Lahore and Karachi to rate an average house officer on a frequency scale of 1 - 6 and do self-assessment, in case of a fresh doctor. The second phase included interviews of 20 medical teachers to explore justification for their rating in the survey questionnaire and for triangulation of data. Quantitative data was analyzed through SPSS version 15 to calculate frequencies and percentages and interviews were analyzed through quasi-statistical approach. In survey, 38.36% out of 73 medical teachers and 30% out of 20 medical teachers in interviews confirmed their confidence on consulting fresh doctors for common ailments as opposed to 61.64% and 70% respectively, expressing their dissatisfaction. Self-assessment of fresh doctors indicated that 40% are confident in handling common medical conditions as opposed to 33.3% out of 75 respondents, who are not confident about their clinical skills. Faculty and self-assessment of fresh doctors has a fair overlap, indicating room for further improvement in the house job training program.

Talking to Your Doctor

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Full Text Available ... for the doctor’s contact information and their preferred method of communication. Remember that nurses and pharmacists are also good sources of information. How to Talk to your Doctor Talking With Your Doctor , NIH ...

Working as a doctor when chronically ill or disabled: comments made by doctors responding to UK surveys.

Science.gov (United States)

Smith, Fay; Goldacre, Michael J; Lambert, Trevor W

2016-07-01

To report a qualitative study of themes doctors raised spontaneously, in a large-scale prospective cohort study covering many aspects of their medical careers, when referring to their own chronic illness or disability. Questionnaire survey. UK. Questionnaires were sent one, five and 10 years after graduation to 44,539 doctors who qualified between 1993 and 2012 in the UK: 38,613 questionnaires were returned and 11,859 respondents provided comments made by doctors about their training or work. The comments of 123 doctors about their own chronic illness or disability. Main themes raised included poor support for doctors with chronic illness or disability, delays in and changes to careers (either planned ahead or imposed), the impact of pressure at work, difficulties returning to work after illness, limitations on career choices and inadequate careers advice for doctors with chronic illness or disabilities. More needs to be done to ensure that doctors with chronic illness or disability receive appropriate support. Occupational health guidance should be monitored closely, with more support for ill doctors including adjustments to the job, help if needed with morale and mental health, and advice on career options. Further studies should establish the prevalence of long-term health conditions among doctors.

Talking to Your Doctor

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Full Text Available ... You Talking to Your Doctor Science Education Resources Community Resources Clear Health A–Z Publications List More » ... can play an active role in your health care by talking to your doctor. Clear and honest ...

Talking to Your Doctor

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Full Text Available ... Impact of NIH Research Science, Health, and Public Trust You are here Home » Institutes at NIH » NIH ... Your Doctor Plain Language Science, Health, and Public Trust Talking to Your Doctor Part I: Preparing for ...

Variations in Ring Particle Cooling across Saturn's Rings with Cassini CIRS

Science.gov (United States)

Brooks, S. M.; Spilker, L. J.; Pilorz, S.; Edgington, S. G.; Déau, E.; Altobelli, N.

2010-12-01

Cassini's Composite Infrared Spectrometer has recorded over two million of spectra of Saturn's rings in the far infrared since arriving at Saturn in 2004. CIRS records far infrared radiation between 10 and 600 cm-1 ( 16.7 and 1000 μ {m} ) at focal plane 1 (FP1), which has a field of view of 3.9 mrad. Thermal emission from Saturn’s rings peaks in this wavelength range. Ring temperatures can be inferred from FP1 data. By tracking how ring temperatures vary, we can determine the thermal inertia of the rings. Previous studies have shown that the rings' thermal inertia, a measure of their response to changes in the thermal environment, varies from ring to ring. Thermal inertia can provide insight into the physical structure of Saturn's ring particles and their regoliths. Low thermal inertia and rapidly changing temperatures are suggestive of ring particles that have more porous or fluffy regoliths or that are riddled with cracks. Solid particles can be expected to have higher thermal inertias. Ferrari et al. (2005) fit thermal inertia values of 5218 {Jm)-2 {K}-1 {s}-1/2 to their B ring data and 6412 {Jm)-2 {K}-1 {s}-1/2 to their C ring data. In this work we focus on CIRS observations of the shadowed portion of Saturn's rings. The rings’ thermal budget is dominated by its absorption of solar radiation. As a result, ring particles abruptly cool as they traverse Saturn's shadow. From these shadow observations we can create cooling curves at specific locations across the rings. We will show that the rings' cooling curves and thus their thermal inertia vary not only from ring to ring, but by location within the individual rings. This research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with NASA. Copyright 2010 California Institute of Technology. Government sponsorship acknowledged.

Doctoral education in the nuclear sector

International Nuclear Information System (INIS)

Minguez, E.

2013-01-01

Doctoral education is a major priority for European universities. In the context of the Bologna Process the importance of doctoral education as the third cycle of higher education and the first stage of a young researchers career, and thus in linking the European Higher Education and Research Areas, was first highlighted in the 2003 Berlin Report. The core component of doctoral training is the advancement of knowledge through original research. considering the need for structured doctoral programs and the need for transparent supervision and assessment, we note that the normal workload of the third cycle in most countries would correspond 3-4 years full time. This is spirit of the new Spanish Doctoral Law. Then, universities should ensure that their doctoral programmes promote interdisciplinary training and the development of transferable skills, thus meeting the needs of the wider employment market. We need to achieve and overall increase in the numbers of doctoral candidates taking up research careers as early stage researchers and also increase the employability as a normal way as it is the case of other advance countries. In Spain, universities with doctoral nuclear programmes and the CIEMAT, with the sponsorship of the nuclear sector, a doctoral school in nuclear science and engineering should be created to enhance the research careers of Young students for the future of nuclear activities in Spain. (Author)

Talking to Your Doctor

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Full Text Available ... NIH Website NIH Employee Intranet Staff Directory En Español Site Menu Home Health Information Health Info Lines ... Talking With Your Doctor , NIH News in Health Español Talking to Your Doctor , National Eye Institute (NEI) ...

Talking to Your Doctor

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Full Text Available ... Communications & Public Liaison » Clear Communication Clear Communication Clear Communication Health Literacy Clear & Simple Clear Health from NIH Cultural Respect Language Access Talking to Your Doctor Plain Language Science, Health, and Public Trust Talking to Your Doctor ...

Coaching Doctoral Students--A Means to Enhance Progress and Support Self-Organisation in Doctoral Education

Science.gov (United States)

Godskesen, Mirjam; Kobayashi, Sofie

2016-01-01

In this paper we focus on individual coaching carried out by an external coach as a new pedagogical element that can impact doctoral students' sense of progress in doctoral education. The study used a mixed-methods approach in that we draw on quantitative and qualitative data from the evaluation of a project on coaching doctoral students. We…

Inequality and Doctoral Education: Exploring the "Rules" of Doctoral Study through Bourdieu's Notion of Field

Science.gov (United States)

Gopaul, Bryan

2015-01-01

While studies have examined a myriad of issues in doctoral study, much of this research has not employed the tools of major social and cultural thinkers to the dynamics of doctoral education. This paper explores the use of Bourdieu's notion of field to render visible the practices and contexts of doctoral education that produce inequalities across…

Dr Oen Boen Ing Patriot doctor, social activist, and doctor of the poor

Directory of Open Access Journals (Sweden)

Ravando Lie

2017-05-01

Full Text Available This article examines the efforts and achievements of Oen Boen Ing, a Tionghoa doctor, to improve the quality of health of the poorer inhabitants of Surakarta. Dr Oen played an important role in five different periods: Dutch colonialism, the Japanese occupation, the Indonesian revolution, Soekarno’s regime, and Suharto’s New Order. Known for being a benevolent doctor, activist, and patriot of the revolution during his life-time, Dr Oen also gave medical assistance to the needy, which famously earned him the accolade of “doctor of the poor”. During the Indonesian revolution, Dr Oen assisted the Student Soldiers (Tentara Pelajar and afterwards was appointed the member of Supreme Advisory Council (Dewan Pertimbangan Agung/DPA by Soekarno in 1949. As a benevolent doctor and activist, Dr Oen is remembered for founding the Panti Kosala Hospital which was renamed to perpetuate his name on 30 October 1983, exactly a year after his passing. When he died, thousands of peoples gathered to pay their final respects to the doctor. He was honoured with a ceremony conducted in the Mangkunegaran Palace. Dr Oen’s name will be eternally respected, especially in Surakarta.

Structure and Magnetic Properties of a Dodecanuclear Twisted-Ring Iron(III) Cluster.

Science.gov (United States)

Caneschi, Andrea; Cornia, Andrea; Fabretti, Antonio C; Gatteschi, Dante

1999-05-03

An unprecedented nonplanar structure characterizes the complex [Fe(OCH 3 ) 2 (dbm)] 12 (on the left in the picture), which contains the largest cyclic ferric cluster yet reported with chemically equivalent bridging units. It is made up of twelve high-spin, antiferromagnetically coupled iron(III) centers and neatly reacts with Na I or Li I templates in organic solution to give hexairon(III) coronates (right). Fe=•, O=○, NaI or LiI=• Hdbm=dibenzoylmethane. © 1999 WILEY-VCH Verlag GmbH, Weinheim, Fed. Rep. of Germany.

Alternative loop rings

CERN Document Server

Goodaire, EG; Polcino Milies, C

1996-01-01

For the past ten years, alternative loop rings have intrigued mathematicians from a wide cross-section of modern algebra. As a consequence, the theory of alternative loop rings has grown tremendously. One of the main developments is the complete characterization of loops which have an alternative but not associative, loop ring. Furthermore, there is a very close relationship between the algebraic structures of loop rings and of group rings over 2-groups. Another major topic of research is the study of the unit loop of the integral loop ring. Here the interaction between loop rings and group ri

Primitivity and weak distributivity in near rings and matrix near rings

International Nuclear Information System (INIS)

Abbasi, S.J.

1993-08-01

This paper shows the structure of matrix near ring constructed over a weakly distributive and primative near ring. It is proved that a weakly distributive primitive near ring is a ring and the matrix near rings constructed over it is also a bag. (author). 14 refs

Synthesis, Characterization and Spectral Properties of Substituted Tetraphenylporphyrin Iron Chloride Complexes

Directory of Open Access Journals (Sweden)

Kai Li

2011-04-01

Full Text Available A series of substituted tetraphenylporphyrin iron chloride complexes [RTPPFe(IIICl, R=o/p-NO2, o/p-Cl, H, o/p-CH3, o/p-OCH3] were synthesized by a novel universal mixed-solvent method and the spectral properties of free base porphyrins and iron porphyrin compounds were compared with each other. The experimental results showed that the one-pot mixed solvent method was superior to the two-step method in the yields, reaction time and workup of reaction mixtures for the synthesis of iron porphyrin compounds. The highest yields (28.7%-40.4% of RTPPFe(IIICl were obtained in the mixed solvents propionic acid, glacial acetic acid and m-nitrotoluene under reflux for 2 h. A detailed analysis of ultraviolet-visible (UV-vis, infrared (IR and far-infrared (FIR spectra suggested the transformation from free base porphyrins to iron porphyrins. The red shift of the Soret band in ultraviolet-visible spectra due to the presence of p-nitrophenyl substituents and the blue shift of Fe-Cl bond of TPPFeCl in far-infrared spectra were further explained by the electron transfer and molecular planarity in the porphyrin ring.

Talking to Your Doctor

Medline Plus

Full Text Available ... Discovery Into Health ® Impact of NIH Research Science, Health, and Public Trust You are here Home » Institutes at NIH » ... Access Talking to Your Doctor Plain Language Science, Health, and Public Trust Talking to Your Doctor Part I: Preparing ...

Dementia - what to ask your doctor

Science.gov (United States)

What to ask your doctor about dementia; Alzheimer disease - what to ask your doctor; Cognitive impairment - what to ask your doctor ... Alzheimer's Association. Dementia Care Practice Recommendations ... in a Home Setting. Updated 2009. Alz.org. www.alz.org/national/ ...

Seeking and using intention of health information from doctors in social media: The effect of doctor-consumer interaction.

Science.gov (United States)

Wu, Tailai; Deng, Zhaohua; Zhang, Donglan; Buchanan, Paula R; Zha, Dongqing; Wang, Ruoxi

2018-07-01

The aim of this study is to investigate how doctor-consumer interaction in social media influences consumers' health information seeking and usage intention. Based on professional-client interaction theory and expectation confirmation theory, we propose that doctor-consumer interaction can be divided into instrumental interaction and affective interaction. These two types of interaction influence consumers' health information seeking and usage intention through consumer satisfaction and trust towards doctors. To validate our proposed research model, we employed the survey method. The measurement instruments for all constructs were developed based on previous literatures, and 352 valid answers were collected by using these instruments. Our results reveal that consumers' intention to seek health information significantly predicts their intention to use health information from social media. Meanwhile, both consumer satisfaction and trust towards doctors influences consumers' health information seeking and usage intention significantly. With regards to the impact of the interaction between doctors and consumers, the results show that both types of doctor-consumer interaction significantly affect consumer satisfaction and trust towards doctors. The mediation analysis confirms the mediation role of consumer satisfaction and trust towards doctors. Compared with many intentional intervention programs, doctor-consumer interaction can be treated as an effective intervention with low cost to promote consumers' health information seeking and usage. Meanwhile, both instrumental and affective interaction should be highlighted for the best interaction results. At last, consumer satisfaction and trust towards doctors could be considered as the important working mechanisms for the effect of doctor-consumer interaction. Copyright © 2018 Elsevier B.V. All rights reserved.

[Murder of the doctor].

Science.gov (United States)

Lorettu, Liliana; Falchi, Lorenzo; Nivoli, Fabrizia L; Milia, Paolo; Nivoli, Giancarlo; Nivoli, Alessandra M

2015-01-01

To examine possible risk factors for the doctor to be killed by the patient in the clinical practice by examining a series of murders that involved physicians. This aim has been achieved through a retrospective review on clinical cases of doctors killed by patients within the period between 1988 and 2013, in Italy. In this period 18 Italian doctors have been killed in the workplace, with a rate of 0.3/100,000. In 7 cases, the murder resulted in the context of doctor-dissatisfaction; in 7 cases the murder was committed by a psychiatric patient; 1 case in the context of a stalking; 3 cases occurred in a workplace which was not safe enough. Four categories of at-risk contexts have been identified. One category includes a murder in the context of a doctor-dissatisfaction, perceived by patient. The second category concerns murders committed by patients suffering from mental illness. A third category includes homicides in a workplace which is not safe. The last category comprises the murder in the context of stalking. These categories identify specific dangerous situations for physicians, in which are highlighted elements that have played a crucial role in the murder and for which special precautions are suggested preventive.

On Doctoral Student Development: Exploring Faculty Mentoring in the Shaping of African American Doctoral Student Success

Science.gov (United States)

Felder, Pamela

2010-01-01

This study examines the influence of faculty mentorship in the shaping of African American doctoral student success. A case analysis framework is used to investigate the belief systems that doctoral students held about their doctoral experience. Data collection involved a one-phase semi-structured interview protocol used to gather information…

Through doctors' eyes: A qualitative study of hospital doctor perspectives on their working conditions.

LENUS (Irish Health Repository)

McGowan, Yvonne

2013-03-11

BACKGROUND: Hospital doctors face significant challenges in the current health care environment, working with staff shortages and cutbacks to health care expenditure, alongside increased demand for health care and increased public expectations. OBJECTIVE: This article analyses challenges faced by junior hospital doctors, providing insight into the experiences of these frontline staff in delivering health services in recessionary times. DESIGN: A qualitative methodology was chosen. METHODS: Semi-structured in-depth interviews were conducted with 20 doctors from urban Irish hospitals. Interviews were recorded via note taking. Full transcripts were analysed thematically using NVivo software. RESULTS: Dominant themes included the following: (1) unrealistic workloads: characterised by staff shortages, extended working hours, irregular and frequently interrupted breaks; (2) fatigue and its impact: the quality of care provided to patients while doctors were sleep-deprived was questioned; however, little reflection was given to any impact this may have had on junior doctors own health; (3) undervalued and disillusioned: insufficient training, intensive workloads and a perceived lack of power to influence change resulted in a sense of detachment among junior doctors. They appeared immune to their surroundings. CONCLUSION: Respondents ascribed little importance to the impact of current working conditions on their own health. They felt their roles were underappreciated and undervalued by policy makers and hospital management. Respondents were concerned with the lack of time and opportunity for training. This study highlighted several \\'red flags\\

[Patients, doctors and the internet].

Science.gov (United States)

Jeannot, Jean Gabriel; Bischoff, Thomas

2015-05-13

The majority of the Swiss population uses the internet to seek information about health. The objective is to be better informed, before or after the consultation. Doctors can advise their information-seeking patients about high quality websites, be it medical portals or websites dedicated to a specific pathology. Doctors should not see the internet as a threat but rather as an opportunity to strengthen the doctor-patient relationship.

Interaction of ring dark solitons with ring impurities in Bose-Einstein condensates

International Nuclear Information System (INIS)

Xue Jukui

2005-01-01

The interaction of ring dark solitons/vortexes with the ring-shaped repulsive and attractive impurities in two-dimensional Bose-Einstein condensates is investigated numerically. Very rich interaction phenomena are obtained, i.e., not only the interaction between the ring soliton and the impurity, but also the interaction between vortexes and the impurity. The interaction characters, i.e., snaking of ring soliton, quasitrapping or reflection of ring soliton and vortexes by the impurity, strongly depend on initial ring soliton velocity, impurity strength, initial position of ring soliton and impurity. The numerical results also reveal that ring dark solitons/vortexes can be trapped and dragged by an adiabatically moving attractive ring impurity

Fourth Doctoral Student Assembly

CERN Multimedia

Ingrid Haug

2016-01-01

On 10 May, over 130 PhD students and their supervisors, from both CERN and partner universities, gathered for the 4th Doctoral Student Assembly in the Council Chamber.   The assembly was followed by a poster session, at which eighteen doctoral students presented the outcome of their scientific work. The CERN Doctoral Student Programme currently hosts just over 200 students in applied physics, engineering, computing and science communication/education. The programme has been in place since 1985. It enables students to do their research at CERN for a maximum of three years and to work on a PhD thesis, which they defend at their University. The programme is steered by the TSC committee, which holds two selection committees per year, in June and December. The Doctoral Student Assembly was opened by the Director-General, Fabiola Gianotti, who stressed the importance of the programme in the scientific environment at CERN, emphasising that there is no more rewarding activity than lear...

An analytical comparison of the patient-to-doctor policy and the doctor-to-patient policy in the outpatient clinic

NARCIS (Netherlands)

Hulshof, P.J.H.; Vanberkel, P.T.; Boucherie, Richardus J.; Hans, Elias W.; van Houdenhoven, Mark; van Ommeren, Jan C.W.

Outpatient clinics traditionally organize processes such that the doctor remains in a consultation room, while patients visit for consultation, we call this the Patient-to-Doctor policy. A different approach is the Doctor-to-Patient policy, whereby the doctor travels between multiple consultation

Penumbra: Doctoral support as drama

DEFF Research Database (Denmark)

Wisker, Gina; Robinson, Gill; Bengtsen, Søren Smedegaard

2017-01-01

Much international doctoral learning research focuses on personal, institutional and learning support provided by supervisors, managed relationships,‘nudging’ robust, conceptual, critical, creative work. Other work focuses on stresses experienced in supervisor-student relationships and doctoral...... journeys. Some considers formal and informal learning communities supporting students on research journeys, and roles played by families, friends and others, sometimes o ering encouragement and sometimes added stress. However, little has been explored concerning often uno cial, largely unrecognised...... sanctioned (‘lightside’), and less well recognised often unsanctioned (‘darkside’) on doctoral research and writing learning journey, instigating questions about doctoral student needs, and the range of support provided, both legitimate, well known, less legitimate. This work concentrates on the ‘darkside’....

Storage Rings

International Nuclear Information System (INIS)

Fischer, W.

2010-01-01

Storage rings are circular machines that store particle beams at a constant energy. Beams are stored in rings without acceleration for a number of reasons (Tab. 1). Storage rings are used in high-energy, nuclear, atomic, and molecular physics, as well as for experiments in chemistry, material and life sciences. Parameters for storage rings such as particle species, energy, beam intensity, beam size, and store time vary widely depending on the application. The beam must be injected into a storage ring but may not be extracted (Fig. 1). Accelerator rings such as synchrotrons are used as storage rings before and after acceleration. Particles stored in rings include electrons and positrons; muons; protons and anti-protons; neutrons; light and heavy, positive and negative, atomic ions of various charge states; molecular and cluster ions, and neutral polar molecules. Spin polarized beams of electrons, positrons, and protons were stored. The kinetic energy of the stored particles ranges from 10 -6 eV to 3.5 x 10 12 eV (LHC, 7 x 10 12 eV planned), the number of stored particles from one (ESR) to 1015 (ISR). To store beam in rings requires bending (dipoles) and transverse focusing (quadrupoles). Higher order multipoles are used to correct chromatic aberrations, to suppress instabilities, and to compensate for nonlinear field errors of dipoles and quadrupoles. Magnetic multipole functions can be combined in magnets. Beams are stored bunched with radio frequency systems, and unbunched. The magnetic lattice and radio frequency system are designed to ensure the stability of transverse and longitudinal motion. New technologies allow for better storage rings. With strong focusing the beam pipe dimensions became much smaller than previously possible. For a given circumference superconducting magnets make higher energies possible, and superconducting radio frequency systems allow for efficient replenishment of synchrotron radiation losses of large current electron or positron beams

Psychiatric Prescribers' Experiences With Doctor Shoppers.

Science.gov (United States)

Worley, Julie; Johnson, Mary; Karnik, Niranjan

2015-01-01

Doctor shopping is a primary method of prescription medication diversion. After opioids, benzodiazepines and stimulants are the next most common prescription medications used nonmedically. Studies have shown that patients who engage in doctor shopping find it fun, exciting, and easy to do. There is a lack of research on the prescriber's perspective on the phenomenon of doctor shopping. This study investigates the experiences of prescribers in psychiatry with patients who engage in doctor shopping. Fifteen prescribers including psychiatrists and psychiatric nurse practitioners working in outpatient psychiatry were interviewed to elicit detailed information about their experiences with patients who engage in doctor shopping. Themes found throughout the interview were that psychiatric prescribers' experience with patients who engage in doctor shopping includes (a) detecting red flags, (b) negative emotional responding, (c) addressing the patient and the problem, and (d) inconsistently implementing precautions. When red flags were detected when prescribing controlled drugs, prescribers in psychiatry experienced both their own negative emotional responses such as disappointment and resentment as well as the negative emotions of the patients such as anger and other extreme emotional responses. Psychiatric prescribers responded to patient's doctor shopping in a variety of ways such as changing their practice, discharging the patients or taking steps to not accept certain patients identified as being at risk for doctor shopping, as well as by talking to the patient and trying to offer them help. Despite experiencing doctor shopping, the prescribers inconsistently implemented precautionary measures such as checking prescription drug monitoring programs. © The Author(s) 2015.

Agency doctorates

International Nuclear Information System (INIS)

1970-01-01

Staff members of the Agency working at the Seibersdorf laboratory are continuing to achieve high academic distinction. Two more - both Austrian - have now been awarded the degree of Doctor of Agriculture. Joachim Kramer, who is 26, graduated from the Hochschule fur Bodenkultur in 1967 with the degree of Diplom-Ingenieur and then started work in the plant breeding and genetics section of the laboratory under the direction of Dr. Knut Mikaelsen. The results of the research work he carried out were accepted as the subject of a thesis for which he has now been granted his doctorate. The doctoral promotion took place on 30 June, at a ceremony attended by Dr. Andre Finkelstein, Deputy Director General for Research and Isotopes. The subject of Dr. Kramer's thesis was a comprehensive study of the mutagenic effects of fast neutrons and gamma rays, and the influence of various modifying factors such as water content, oxygen and metabolic state of seeds at the time of irradiation. This work has contributed significantly to the understanding of the mechanisms by which these two types of ionizing radiation produce mutations in seeds. The knowledge gained will be of great importance in the efficient use of ionizing radiation in practical plant breeding. Paul Wassermann, who is 33 years old, joined the Agency in 1965. He, too, graduated from the Hochschule fur Bodenkultur as Diplom-Ingenieur in agriculture, having graduated with honours previously from the agricultural secondary school at Raumberg, Austria, in 1958. Dr. Wassermann's own words may be used to explain how he came to gain his doctorate. 'In October, 1966, I completed my studies at the Hochschule,' he writes. 'I was employed at the Agency laboratories in Seibersdorf, working in the plant and soils group. Encouraged by the interesting research which was performed there, a thesis entitled 'the Fate of Nitrogen in Submerged Rice Soils' was started, which finally led to the doctor's degree in Agriculture in June this year

Synthesis of Iron Doped Zeolite Imidazolate Framework-8 and Its Remazol Deep Black RGB Dye Adsorption Ability

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Mai Thi Thanh

2017-01-01

Full Text Available Zeolite imidazole framework-8 (ZIF-8 and the iron doped ZIF-8 (Fe-ZIF-8 were synthesized by the hydrothermal process. The obtained materials were characteristic of X-ray diffraction (XRD, X-ray photoelectron spectroscopy (XPS, scanning electron microscope (SEM, nitrogen adsorption/desorption isotherms, and atomic absorption spectroscopy (AAS. The results showed that the obtained Fe-ZIF-8 possessed the ZIF-8 structure with a large specific area. ZIF-8 and Fe-ZIF-8 were used for the removal of Remazol Deep Black (RDB RGB dye from aqueous solutions. The various factors affecting adsorption such as pH, initial concentration, contact time, and temperature were investigated. The results showed that the introduction of iron into ZIF-8 provided a much larger adsorption capacity and faster adsorption kinetics than ZIF-8 without iron. The electrostatic interaction and π-π interaction between the aromatic rings of the RDB dye and the aromatic imidazolate rings of the adsorbent were responsible for the RDB adsorption. Moreover, the coordination of the nitrogen atoms and oxygen in carboxyl group in RDB molecules with the Fe2+ ions in the ZIF-8 framework played a vital role for the effective removal of RDB from aqueous solution.

The doctoral learning penumbra

DEFF Research Database (Denmark)

Bengtsen, Søren Smedegaard; Robinson, Gill; Wisker, Gina

This paper presents our cross-national research into what we term the ‘doctoral learning penumbra’, which covers the diverse, unnoticed, and often unrecognised forms of help and support that doctoral students draw from during their PhD, and which are vital for completion. Our aim is to better...

Headache - what to ask your doctor

Science.gov (United States)

... Migraine - what to ask your doctor; Tension-type headache - what to ask your doctor; Cluster headache - what to ask your doctor ... How can I tell if the headache I am having is dangerous? What are ... headache ? A migraine headache ? A cluster headache ? What medical ...

Iron and stony-iron meteorites

DEFF Research Database (Denmark)

Benedix, Gretchen K.; Haack, Henning; McCoy, T. J.

2014-01-01

Without iron and stony-iron meteorites, our chances of ever sampling the deep interior of a differentiated planetary object would be next to nil. Although we live on a planet with a very substantial core, we will never be able to sample it. Fortunately, asteroid collisions provide us with a rich...... sampling of the deep interiors of differentiated asteroids. Iron and stony-iron meteorites are fragments of a large number of asteroids that underwent significant geological processing in the early solar system. Parent bodies of iron and some stony-iron meteorites completed a geological evolution similar...... to that continuing on Earth – although on much smaller length- and timescales – with melting of the metal and silicates; differentiation into core, mantle, and crust; and probably extensive volcanism. Iron and stony-iron meteorites are our only available analogues to materials found in the deep interiors of Earth...

Australian doctors and the visual arts. Part 4. Doctors as supporters of art galleries and artists in Victoria.

Science.gov (United States)

Hamilton, D G

1986-07-07

The contribution of doctors to the visual arts is being discussed in a series of six articles. Doctor-artists in New South Wales and Victoria, and doctors as collectors, donors, gallery supporters and writers in New South Wales, have been discussed in earlier articles. This, the fourth article, deals with doctors as supporters of art galleries and artists in Victoria.

African International Doctoral Students in New Zealand: Englishes, Doctoral Writing and Intercultural Supervision

Science.gov (United States)

Doyle, Stephanie; Manathunga, Catherine; Prinsen, Gerard; Tallon, Rachel; Cornforth, Sue

2018-01-01

While the experiences of international doctoral students, especially those from Asian countries, have been well researched, fewer studies have explored the experiences of African students in Southern countries like Australia and Aotearoa/New Zealand. This article reports on doctoral writing and student and supervisor perspectives on English…

Rings in drugs.

Science.gov (United States)

Taylor, Richard D; MacCoss, Malcolm; Lawson, Alastair D G

2014-07-24

We have analyzed the rings, ring systems, and frameworks in drugs listed in the FDA Orange Book to understand the frequency, timelines, molecular property space, and the application of these rings in different therapeutic areas and target classes. This analysis shows that there are only 351 ring systems and 1197 frameworks in drugs that came onto the market before 2013. Furthermore, on average six new ring systems enter drug space each year and approximately 28% of new drugs contain a new ring system. Moreover, it is very unusual for a drug to contain more than one new ring system and the majority of the most frequently used ring systems (83%) were first used in drugs developed prior to 1983. These observations give insight into the chemical novelty of drugs and potentially efficient ways to assess compound libraries and develop compounds from hit identification to lead optimization and beyond.

[Life conditions of Togolese doctors].

Science.gov (United States)

Koffi-Tessio, Annick Viwalé; Oniankitan, Owonayo; Mijiyawa, Moustafa

2010-09-01

A study has been carried out by Togolese medical doctors in order to determine the perceived and the real life of their profession. The study, which was transversal, has taken in account a sample of 52 medical doctors made on the basis of a cautious choice. Most of these medical doctors (15 general practitioners, 23 specialists and 14 hospitalo-universitaires) work in the medical cares centres of Lomé. A sheet of survey has permitted the collection of demographic data and data relating to the medical studies and career. The 52 medical doctors included in the study (7 women, 45 men) were between 25 and 59 years old; their age of getting their A-level was between 16 and 23 years old, and that of getting the doctorate diploma between 24 and 37. The length of professional experience stands between 8 months and 27 years. The marital status was specified by 47 of the 52 medical doctors: 13 single, one divorced, and 33 married; 5 of the 7 women who took part in the survey were single and without any child. The love of the profession (65%), the social status it confers (37%) and the honour tied to the profession (27%) were the main motives of choosing the profession. The decision of doing medical studies was taken during secondary studies by 45 of the 52 persons. The faculty of medicine of Lomé has been the study frame to general medicine studies of 35 persons (67%). The low payment (83%), the poverty of the patients (83%), the narrowness of the technical platform (79%), the insufficiency of cares structures in paramedical personnel (67%), the insufficiency of continuing education (60%), and the lack or insufficiency of drugs (58%) were the main problems encountered during their professional experience by the people questioned. 22 medical doctors (43%) have estimated that their profession has given them a particular social status. Only 8 medical doctors have found that the real things they have gone trough in the profession matches with the idea they had, while 32 (62

Reinventing The Doctor

Directory of Open Access Journals (Sweden)

Moyez Jiwa

2011-07-01

Full Text Available There has been a seismic shift in the lives of people because of technology. People are far better informed than they were in the 1980s and 1990s. Much of this information is available through the media but even more is available and archived on the internet. The forces pushing the internet into health and health care are strong and unstoppable, ensuring that the internet and the choices it offers must be part of the design of our future health care system. We are no longer content to wait in queues as we live at a faster pace than earlier generations — we don’t not have time to wait for appointments months, weeks or even days in advance. The internet offers the prospect of online consultations in the comfort of your own home. The physical examination will change as new devices are developed to allow the necessary sounds and signals emitted by our malfunctioning bodies to be recorded, interpreted and captured at a remote location. Meanwhile, for those who prefer to see a health care practitioner in person the options to consult practitioners other than doctors who can advise on our health is expanding. The reality is we can’t afford to train or pay for all the doctors we need under the current “doctor-knows-best” system of health care. Patients no longer believe the rhetoric and are already voting with their feet. Pharmacists, nurses and other allied health professionals are beginning to play a much greater role in offering relief from symptoms and monitoring of chronic diseases. Of course, the doctor of the future will still need to offer face-to-face consultations to some people most of the time or most people some of the time. The social role doctors play will continue to be important as humans will always need other humans to personally respond to their distress. As doctors reinvent themselves, the internet and the value of time with patients will be the driving forces that move us into a more sustainable future in health care.

The Criminal Justice Doctorate: A Study of Doctoral Programs in the United States.

Science.gov (United States)

Felkenes, George T.

Graduates of six institutions were surveyed in an effort to develop a profile of doctoral graduates from institutions that have traditionally offered doctoral programs oriented specifically toward the field of criminal justice. A second research objective was to develop an understanding of the attitudes, frustrations, and utilization patterns of…

Feasible utopias in doctoral education

DEFF Research Database (Denmark)

Elliot, Dely; Guccione, Kay; Bengtsen, Søren Smedegaard

-Martek, Chen & McAlpine, 2011). PGRs’ motivation, creativity, resilience and momentum during their long and intense doctoral journey are often strongly sustained by unseen informal structures, social support systems and extra-curricular activities tacitly providing emotional, social, pastoral and academic......Part 1 Abstract Ongoing educational and psycho-social challenges in doctoral education (e.g. psychological distress, attrition and delay in completion) warrant a more comprehensive understanding of the expanded doctoral education context and how the different facets of doctoral support mechanisms......, 2016b; Bengtsen & Barnett, 2017; Bryan & Guccione, 2018; Elliot et al., 2016b, 2016c; Wisker et al., 2017). Yet, there remains a somewhat limited understanding not only of these multifaceted components but how they interact with already existing formal and informal support mechanisms offered...

Reasons for consulting a doctor on the Internet: Web survey of users of an Ask the Doctor service.

Science.gov (United States)

Umefjord, Göran; Petersson, Göran; Hamberg, Katarina

2003-10-22

In 1998 the Swedish noncommercial public health service Infomedica opened an Ask the Doctor service on its Internet portal. At no charge, anyone with Internet access can use this service to ask questions about personal health-related and disease-related matters. To study why individuals choose to consult previously-unknown doctors on the Internet. Between November 1, 2001, and January 31, 2002 a Web survey of the 3622 Ask the Doctor service users, 1036 men (29%) and 2586 (71%) women, was conducted. We excluded 186 queries from users. The results are based on quantitative and qualitative analysis of the answers to the question "Why did you choose to ask a question at Infomedica's 'Ask the Doctor' service?" 1223 surveys were completed (response rate 36 %). Of the participants in the survey 322 (26%) were male and 901 (74%) female. As major reasons for choosing to consult previously-unknown doctors on the Internet participants indicated: convenience (52%), anonymity (36%), "doctors too busy" (21%), difficult to find time to visit a doctor (16%), difficulty to get an appointment (13%), feeling uncomfortable when seeing a doctor (9%), and not being able to afford a doctors' visit (3%). Further motives elicited through a qualitative analysis of free-text answers were: seeking a second opinion, discontent with previous doctors and a wish for a primary evaluation of a medical problem, asking embarrassing or sensitive questions, seeking information on behalf of relatives, preferring written communication, and (from responses by expatriates, travelers, and others) living far away from regular health care. We found that that an Internet based Ask the Doctor service is primarily consulted because it is convenient, but it may also be of value for individuals with needs that regular health care services have not been able to meet.

When doctors share visit notes with patients: a study of patient and doctor perceptions of documentation errors, safety opportunities and the patient-doctor relationship.

Science.gov (United States)

Bell, Sigall K; Mejilla, Roanne; Anselmo, Melissa; Darer, Jonathan D; Elmore, Joann G; Leveille, Suzanne; Ngo, Long; Ralston, James D; Delbanco, Tom; Walker, Jan

2017-04-01

Patient advocates and safety experts encourage adoption of transparent health records, but sceptics worry that shared notes may offend patients, erode trust or promote defensive medicine. As electronic health records disseminate, such disparate views fuel policy debates about risks and benefits of sharing visit notes with patients through portals. Presurveys and postsurveys from 99 volunteer doctors at three US sites who participated in OpenNotes and postsurveys from 4592 patients who read at least one note and submitted a survey. Patients read notes to be better informed and because they were curious; about a third read them to check accuracy. In total, 7% (331) of patients reported contacting their doctor's office about their note. Of these, 29% perceived an error, and 85% were satisfied with its resolution. Nearly all patients reported feeling better (37%) or the same (62%) about their doctor. Patients who were older (>63), male, non-white, had fair/poor self-reported health or had less formal education were more likely to report feeling better about their doctor. Among doctors, 26% anticipated documentation errors, and 44% thought patients would disagree with notes. After a year, 53% believed patient satisfaction increased, and 51% thought patients trusted them more. None reported ordering more tests or referrals. Despite concerns about errors, offending language or defensive practice, transparent notes overall did not harm the patient-doctor relationship. Rather, doctors and patients perceived relational benefits. Traditionally more vulnerable populations-non-white, those with poorer self-reported health and those with fewer years of formal education-may be particularly likely to feel better about their doctor after reading their notes. Further informing debate about OpenNotes, the findings suggest transparent records may improve patient satisfaction, trust and safety. Published by the BMJ Publishing Group Limited. For permission to use (where not already

Liesegang rings in tissue. How to distinguish Liesegang rings from the giant kidney worm, Dioctophyma renale.

Science.gov (United States)

Tuur, S M; Nelson, A M; Gibson, D W; Neafie, R C; Johnson, F B; Mostofi, F K; Connor, D H

1987-08-01

Liesegang rings (LRs) are periodic precipitation zones from supersaturated solutions in colloidal systems. They are formed by a process that involves an interplay of diffusion, nucleation, flocculation or precipitation, and supersaturation. Examples include LRs of calcium carbonate in oölitic limestone (in nature), LRs of silver chromate in gelatin (in vitro), and LRs of glycoprotein in pulmonary corpora amylacea (in vivo). Here we describe LRs in lesions from 29 patients--mostly lesions of the kidney, synovium, conjunctiva, and eyelid. The LRs formed in cysts, or in fibrotic, inflamed, or necrotic tissue. The LRs in this study varied greatly in shape and size, measuring 7-800 microns. Special stains and energy-dispersive radiographic analysis or scanning electron microscopy revealed that some LRs contained calcium, iron (hemosiderin), silicon, and sulfur. Some pathologists have mistaken LRs for eggs, larvae, or adults of the giant kidney worm, Dioctophyma renale. D. renale is a large blood-red nematode that infects a variety of fish-eating mammals, especially mink. Fourteen documented infections of humans have been recorded, usually with adult worms expelled from the urethra. The adult worms are probably the largest helminth to parasitize humans. Eggs of D. renale are constant in size (60-80 microns X 39-47 microns), contain an embryo, and have characteristic sculpturing of the shell. Liesegang rings should not be mistaken for eggs, larvae, or adults of D. renale, or for any other helminth.

Does a self-referral counselling program reach doctors in need of help? A comparison with the general Norwegian doctor workforce

Directory of Open Access Journals (Sweden)

Gude Tore

2007-03-01

Full Text Available Abstract Background Doctors have a relatively high degree of emotional distress, but seek help to a lesser degree and at a later stage than other academic groups. This can be deleterious for themselves and for their patients. Prevention programs have therefore been developed but it is unclear to what extent they reach doctors in need of help. This study describes doctors who participated in a self-referrral, easily accessible, stress relieving, counselling program in Norway, and compares them with a nationwide sample of Norwegian doctors. Methods Two hundred and twenty seven (94% of the doctors, 117 women and 110 men, who came to the resort centre Villa Sana, Modum, Norway, between August 2003 and July 2005, agreed to participate in the study. Socio-demographic data, reasons for and ways of help-seeking, sick-leave, symptoms of depression and anxiety, job stress and burnout were assessed by self-reporting questionnaires. Results Forty-nine percent of the Sana doctors were emotionally exhausted (Maslach compared with 25% of all Norwegian doctors. However, they did not differ on empathy and working capacity, the other two dimensions in Maslach's burnout inventory. Seventy-three percent of the Sana doctors could be in need of treatment for depression or anxiety based on their symptom distress scores, compared with 14% of men and 18% of women doctors in Norway. Twenty-one percent of the Sana doctors had a history of suicidal thoughts, including how to commit the act, as compared to 10% of Norwegian doctors in general. Conclusion Sana doctors displayed a higher degree of emotional exhaustion, symptoms of depression and anxiety as well as job related stress, compared with all Norwegian doctors. This may indicate that the program at Villa Sana to a large extent reaches doctors in need of help. The counselling intervention can help doctors to evaluate their professional and private situation, and, when necessary, enhance motivation for seeking adequate

Best practices in doctoral retention: Mentoring

Directory of Open Access Journals (Sweden)

Judie L. Brill

2014-06-01

Full Text Available  The aim of this critical literature review is to outline best practices in doctoral retention and the successful approach of one university to improve graduation success by providing effective mentorship for faculty and students alike. The focus of this literature review is on distance learning relationships between faculty and doctoral students, regarding retention, persistence, and mentoring models. Key phrases and words used in the search and focusing on mentoring resulted in over 20,000 sources. The search was narrowed to include only doctoral study and mentoring. Research questions of interest were: Why do high attrition rates exist for doctoral students? What are the barriers to retention? What are the benefits of doctoral mentoring? What programs do institutions have in place to reduce attrition? The researchers found a key factor influencing doctoral student retention and success is effective faculty mentorship. In particular, the design of a mentoring and faculty training program to increase retention and provide for success after graduation is important. This research represents a key area of interest in the retention literature, as institutions continue to search for ways to better support students during their doctoral programs and post-graduation. DOI: 10.18870/hlrc.v4i2.186

EHR adoption among doctors who treat the elderly.

Science.gov (United States)

Yeager, Valerie A; Menachemi, Nir; Brooks, Robert G

2010-12-01

The purpose of this study is to examine Electronic Health Record (EHR) adoption among Florida doctors who treat the elderly. This analysis contributes to the EHR adoption literature by determining if doctors who disproportionately treat the elderly differ from their counterparts with respect to the utilization of an important quality-enhancing health information technology application. This study is based on a primary survey of a large, statewide sample of doctors practising in outpatient settings in Florida. Logistic regression analysis was used to determine whether doctors who treat a high volume of elderly (HVE) patients were different with respect to EHR adoption. Our analyses included responses from 1724 doctors. In multivariate analyses controlling for doctor age, training, computer sophistication, practice size and practice setting, HVE doctors were significantly less likely to adopt EHR. Specifically, compared with their counterparts, HVE doctors were observed to be 26.7% less likely to be utilizing an EHR system (OR=0.733, 95% CI 0.547-0.982). We also found that doctor age is negatively related to EHR adoption, and practice size and doctor computer savvy-ness is positively associated. Despite the fact that EHR adoption has improved in recent years, doctors in Florida who serve the elderly are less likely to adopt EHRs. As long as HVE doctors are adopting EHR systems at slower rates, the elderly patients treated by these doctors will be at a disadvantage with respect to potential benefits offered by this technology. © 2010 Blackwell Publishing Ltd.

Smart strategies for doctors and doctors-in-training: heuristics in medicine.

Science.gov (United States)

Wegwarth, Odette; Gaissmaier, Wolfgang; Gigerenzer, Gerd

2009-08-01

How do doctors make sound decisions when confronted with probabilistic data, time pressures and a heavy workload? One theory that has been embraced by many researchers is based on optimisation, which emphasises the need to integrate all information in order to arrive at sound decisions. This notion makes heuristics, which use less than complete information, appear as second-best strategies. In this article, we challenge this pessimistic view of heuristics. We introduce two medical problems that involve decision making to the reader: one concerns coronary care issues and the other macrolide prescriptions. In both settings, decision-making tools grounded in the principles of optimisation and heuristics, respectively, have been developed to assist doctors in making decisions. We explain the structure of each of these tools and compare their performance in terms of their facilitation of correct predictions. For decisions concerning both the coronary care unit and the prescribing of macrolides, we demonstrate that sacrificing information does not necessarily imply a forfeiting of predictive accuracy, but can sometimes even lead to better decisions. Subsequently, we discuss common misconceptions about heuristics and explain when and why ignoring parts of the available information can lead to the making of more robust predictions. Heuristics are neither good nor bad per se, but, if applied in situations to which they have been adapted, can be helpful companions for doctors and doctors-in-training. This, however, requires that heuristics in medicine be openly discussed, criticised, refined and then taught to doctors-in-training rather than being simply dismissed as harmful or irrelevant. A more uniform use of explicit and accepted heuristics has the potential to reduce variations in diagnoses and to improve medical care for patients.

Which Doctor to Trust: A Recommender System for Identifying the Right Doctors.

Science.gov (United States)

Guo, Li; Jin, Bo; Yao, Cuili; Yang, Haoyu; Huang, Degen; Wang, Fei

2016-07-07

Key opinion leaders (KOLs) are people who can influence public opinion on a certain subject matter. In the field of medical and health informatics, it is critical to identify KOLs on various disease conditions. However, there have been very few studies on this topic. We aimed to develop a recommender system for identifying KOLs for any specific disease with health care data mining. We exploited an unsupervised aggregation approach for integrating various ranking features to identify doctors who have the potential to be KOLs on a range of diseases. We introduce the design, implementation, and deployment details of the recommender system. This system collects the professional footprints of doctors, such as papers in scientific journals, presentation activities, patient advocacy, and media exposure, and uses them as ranking features to identify KOLs. We collected the information of 2,381,750 doctors in China from 3,657,797 medical journal papers they published, together with their profiles, academic publications, and funding. The empirical results demonstrated that our system outperformed several benchmark systems by a significant margin. Moreover, we conducted a case study in a real-world system to verify the applicability of our proposed method. Our results show that doctors' profiles and their academic publications are key data sources for identifying KOLs in the field of medical and health informatics. Moreover, we deployed the recommender system and applied the data service to a recommender system of the China-based Internet technology company NetEase. Patients can obtain authority ranking lists of doctors with this system on any given disease.

Iron(II) complexes of new hexadentate 1,1,1-tris-(iminomethyl)ethane podands, and their 7-methyl-1,3,5-triazaadamantane rearrangement products.

Science.gov (United States)

Diener, Sara A; Santoro, Amedeo; Kilner, Colin A; Loughrey, Jonathan J; Halcrow, Malcolm A

2012-04-07

New iron(II) podand complexes have been prepared, by condensation of 2-(aminomethyl)-2-methyl-1,3-diaminopropane with 3 equiv of a heterocyclic aldehyde in the presence of hydrated Fe[BF(4)](2) or Fe[ClO(4)](2) as templates. The 2-(aminomethyl)-2-methyl-1,3-diaminopropane is prepared in situ by deprotonation of its trihydrochloride salt. The chloride must be removed from these reactions by precipitation with silver, to avoid the formation of the alternative 2,4,6-trisubstituted-7-methyl-1,3,5-triazaadamantane condensation products, or their FeCl(2) adducts. The crystal structures of two 2,4,6-tri(pyridyl)-7-methyl-1,3,5-triazaadamantane-containing species are presented, and contain two different geometric isomers of this tricyclic ring with three equatorial, or two equatorial and one axial, pyridyl substituents. Both structures feature strong C-HX (X = Cl or F) hydrogen bonding from the aminal C-H groups in the triazaadamantane ring. Five iron(II) podand complexes were successfully obtained, all of which contain low-spin iron centres.

The Trouble with Doctoral Aspiration Now

Science.gov (United States)

Burford, James

2018-01-01

This article attends to the affective-political dimensions of doctoral aspiration. It considers why doctoral students continue to hope for an 'academic good life' in spite of the depressed and precarious features of the academic present. The article emerges from 2013 research with ten doctoral students in the Arts and Social Sciences, at a…

Correlations between the anatomical traits of Gymnocladus canadensis Lam. in heartwood and sapwood of early- and latewood zones of growth rings

Directory of Open Access Journals (Sweden)

Jokanović Dušan

2015-01-01

Full Text Available This paper shows correlations between vessel characteristics and differences in growth-ring width in heartwood and sapwood. Analyzed samples were from an iron-wood tree (Gymnocladus canadensis Lam. that grew in the Mužljanski Rit area, of the Srpska Crnja municipality in Serbia. According to previous research, it was deduced that Gymnocladus canadensis Lam. belongs to ring-porous species with big vessel lumen in the earlywood zone and thicker cell walls in the latewood. Vessels were more numerous in the latewood zone, and the same was true for heartwood and sapwood. For both layers, sapwood possessed a few more vessels than heartwood, and a statistically significant difference was confirmed by t-test during the early phase. The greatest negative value of correlation coefficient was between the number of vessels and growth-ring width during the early phase for sapwood. The number of vessels decreased in the wider growth rings. The correlation between growth-ring width and the area of vessels had a statistically significant positive value of correlative coefficient, which means that wider growth rings had larger vessel areas in the early phase for sapwood. [Projekat Ministarstva nauke Republike Srbije, br. 31041

White Ring; White ring

Energy Technology Data Exchange (ETDEWEB)

Aoki, H.; Yuzawa, H. [Nikken Sekkei Ltd., Osaka (Japan)

1998-01-05

White Ring is a citizen`s gymnasium used for figure skating and short track speed skating games of 18th Winter Olympic Games in 1998. White Ring is composed of a main-arena and a sub-arena. For the main-arena with an area 41mtimes66m, an ice link can be made by disengaging the potable floor and by flowing brine in the bridged polystyrene pipes embedded in the concrete floor. Due to the fortunate groundwater in this site, well water is used for the outside air treatment energy in 63% during heating and in 35% during cooling. Ammonia is used as a cooling medium for refrigerating facility. For the heating of audience area in the large space, heat load from the outside is reduced by enhancing the heat insulation performance of the roof of arena. The audience seats are locally heated using heaters. For the White Ring, high quality environment is realized for games through various functions of the large-scale roof of the large space. Success of the big event was expected. 15 figs., 4 tabs.

Token Ring Project

Directory of Open Access Journals (Sweden)

Adela Ionescu

2007-01-01

Full Text Available Ring topology is a simple configuration used to connect processes that communicate among themselves. A number of network standards such as token ring, token bus, and FDDI are based on the ring connectivity. This article will develop an implementation of a ring of processes that communicate among themselves via pipe links. The processes are nodes in the ring. Each process reads from its standard input and writes in its standard output. N-1 process redirects the its standard output to a standard input of the process through a pipe. When the ring-structure is designed, the project can be extended to simulate networks or to implement algorithms for mutual exclusion

Conceptualising Doctoral Writing as an Affective-political Practice

Directory of Open Access Journals (Sweden)

James Burford

2017-03-01

Full Text Available Aim/Purpose: This article offers a conceptual summary and critique of existing literature on doctoral writing and emotion. The article seeks to intervene in current debates about doctoral writing by re-positioning it as an affective-political practice Background: Over recent decades public interest in the doctorate has expanded as it has become re-framed as a key component of national success in the global knowledge economy. It is within this context that the practice of doctoral writing has crystallised as an object of interest. While researchers have examined the increased regulation, surveillance, and intensification of doctoral writing, often this work is motivated to develop pedagogies that support students to meet these new expectations. At this point, there has been limited attention to what broad changes to the meanings and practices of doctoral writing feel like for students. Methodology: The paper offers a conceptual review that examines the ways in which doctoral writing tends to be understood. A review of literature in the areas of doctoral writing, doctoral emotion, and critical studies of academic labour was undertaken in order to produce a more comprehensive understanding of the political and emotional dynamics of doctoral writing. Contribution: It is intended that this conceptual research paper help researchers attend to the emotional context of doctoral writing in the current university context. Critical studies of academic work and life are identified as a possible platform for the development of future doctoral education research, and the conceptual tool of “affective-politics” is advanced as a novel frame for approaching doctoral writing research.

The intermetallic bonding between a ring carrier and aluminum piston alloy

Directory of Open Access Journals (Sweden)

Manasijevic, Srećko

2015-09-01

Full Text Available This paper presents the results of investigating the formation of intermetallic bond between a ring carrier and aluminum piston alloy. The ring carrier is made of austenitic cast iron (Ni-Resist in order to increase the wear resistance of the first ring groove and applied in highly loaded diesel engines. Metallographic examination of the quality of alfin bond was done. A metallographic investigation using an optical microscope in combination with the SEM/EDS analysis of the quality of the intermetallic bonding layer was done. The test results show that can be made successfully as well as the formation of metal connection (alfin bond between the ring carrier and aluminum piston alloy.El artículo presenta los resultados de la investigación sobre la formación de una unión intermetálica entre el portasegmento y la aleación de aluminio del pistón. El portasegmento es una fundición de hierro austenítico (Ni-Resist con el fin de aumentar la resistencia al desgaste de la unión Al-fin del primer segmento y se utiliza en motores diésel altamente cargados. Se realizó un examen metalográfico de la unión intermetálica, mediante un microscopio óptico en combinación con SEM/EDS. Los satisfactorios resultados obtenidos muestran la formación de contacto metálico (unión Al-fin del primer segmento entre el portasegmento y la aleación de aluminio del pistón.

Semi-algebraic function rings and reflectors of partially ordered rings

CERN Document Server

Schwartz, Niels

1999-01-01

The book lays algebraic foundations for real geometry through a systematic investigation of partially ordered rings of semi-algebraic functions. Real spectra serve as primary geometric objects, the maps between them are determined by rings of functions associated with the spectra. The many different possible choices for these rings of functions are studied via reflections of partially ordered rings. Readers should feel comfortable using basic algebraic and categorical concepts. As motivational background some familiarity with real geometry will be helpful. The book aims at researchers and graduate students with an interest in real algebra and geometry, ordered algebraic structures, topology and rings of continuous functions.

Do not judge according to appearance: patients' preference of a doctor's face does not influence their assessment of the patient-doctor relationship.

Science.gov (United States)

Lee, Soon-Ho; Chang, Dong-Seon; Kang, O-Seok; Kim, Hwa-Hyun; Kim, Hackjin; Lee, Hyejung; Park, Hi-Joon; Chae, Younbyoung

2012-12-01

The aim of this study was to investigate whether a patient's preference for a doctor's face is associated with better assessments of relational empathy in the patient-doctor relationship after the first clinical consultation. A total of 110 patients enrolled in a traditional Korean medical clinic participated in the study. Patients' preference for doctors' faces was assessed by a two alternative forced choice (2AFC) task, with 60 different pairs of six different Asian male doctors' faces. One of the six doctors then carried out the initial clinical consultation for these patients. The patient-doctor relationship was assessed using the Consultation and Relational Empathy (CARE) measure. The data of all patients' simulated preferences for a doctor's face and their assessment values of a doctor's relational empathy was compared, and no significant correlation was found between both values (r=-0.024, p>0.809). These findings suggest that the perceived empathy in the patient-doctor relationship is not influenced by the patient's preference for a certain doctor's face. The first impression of a doctor is often determined by his appearance and look. However, whether or not the patient particularly prefers a doctor's face does not seem to matter in developing a good patient-doctor relationship.

Work of female rural doctors.

Science.gov (United States)

Wainer, Jo

2004-04-01

To identify the impact of family life on the ways women practice rural medicine and the changes needed to attract women to rural practice. Census of women rural doctors in Victoria in 2000, using a self-completed postal survey. General and specialist practice. Two hundred and seventy-one female general practitioners and 31 female specialists practising in Rural, Remote and Metropolitan Area Classifications 3-7. General practitioners are those doctors with a primary medical degree and without additional specialist qualifications. Interaction of hours and type of work with family responsibilities. Generalist and specialist women rural doctors carry the main responsibility for family care. This is reflected in the number of hours they work in clinical and non-clinical professional practice, availability for on-call and hospital work, and preference for the responsibilities of practice partnership or the flexibility of salaried positions. Most of the doctors had established a satisfactory balance between work and family responsibilities, although a substantial number were overworked in order to provide an income for their families or meet the needs of their communities. Thirty-six percent of female rural general practitioners and 56% of female rural specialists preferred to work fewer hours. Female general practitioners with responsibility for children were more than twice as likely as female general practitioners without children to be in a salaried position and less likely to be a practice partner. The changes needed to attract and retain women in rural practice include a place for everyone in the doctor's family, flexible practice structures, mentoring by women doctors and financial and personal recognition. Women make up less than a quarter of the rural general practice workforce and an even smaller percentage of the specialist rural medical workforce. As a result their experiences are not well articulated in research on rural medical practice and their needs are

Rotating ring-ring electrode theory and experiment

NARCIS (Netherlands)

Kuiken, H.K.; Bakkers, E.P.A.M.; Ligthart, H.; Kellyb, J.J.

2000-01-01

A model is presented for the rotating ring-ring electrode. Although the electrode is defined by four characteristic lengths, it is shown that the collection efficiency depends on only two dimensionless parameters. A simple relationship between these and the corresponding parameters for the rotating

Doctor's perception of doctor-patient relationships in emergency departments: What roles do gender and ethnicity play?

Directory of Open Access Journals (Sweden)

Borde Theda

2008-04-01

Full Text Available Abstract Background Emergency departments continuously provide medical treatment on a walk-in basis. Several studies investigated the patient's perception of the doctor-patient relationship, but few have asked doctors about their views. Furthermore, the influence of the patient's ethnicity and gender on the doctor's perception remains largely unanswered. Methods Based on data collated in three gynaecology (GYN/internal medicine (INT emergency departments in Berlin, Germany, we evaluated the impact of the patient's gender and ethnicity on the doctors' satisfaction with the course of the treatment they provided. Information was gathered from 2.429 short questionnaires completed by doctors and the medical records of the corresponding patients. Results The patient's ethnicity had a significant impact on the doctors' satisfaction with the doctor-patient relationship. Logistic regression analysis showed that the odds ratio (OR for physician satisfaction was significantly lower for patients of Turkish origin (OR = 2.6 INT and 5.5 GYN than for those of German origin. The main reasons stated were problems with communication and a perceived lack of urgency for emergency treatment. The odds ratios for dissatisfaction due to a lack of language skills were 4.48 (INT and 6.22 (GYN, and those due to perceived lack of urgency for emergency treatment were 0.75 (INT and 0.63 (GYN. Sex differences caused minor variation. Conclusion The results show that good communication despite language barriers is crucial in providing medical care that is satisfactory to both patient and doctors, especially in emergency situations. Therefore the use of professional interpreters for improved communication and the training of medical staff for improved intercultural competence are essential for the provision of adequate health care in a multicultural setting.

Doctoral education in a successful ecological niche

DEFF Research Database (Denmark)

Christensen, Mette Krogh; Lund, Ole

2014-01-01

Scholarly communities are dependent on and often measured by their ability to attract and develop doctoral students. Recent literature suggests that most scholarly communities entail ecological niches in which the doctoral students learn the codes and practices of research. In this article, we...... successful doctoral education because it: 1) fleshes out the professional attitude that is necessary for becoming a successful researcher in the department, 2) shapes and adapts the doctoral students’ desires to grasp and identify with the department’s practices, and 3) provides the doctoral students...... explore the microclimate in an ecological niche of doctoral education. Based on a theoretical definition of microclimate as the emotional atmosphere that ties group members together and affects their actions, we conducted a case study that aimed to describe the key features of the microclimate...

Alternating ring-opening copolymerization of cyclohexene oxide with phthalic anhydride catalyzed by iron(III) salen complexes

Czech Academy of Sciences Publication Activity Database

Mundil, R.; Hošťálek, Z.; Šeděnková, Ivana; Merna, J.

2015-01-01

Roč. 23, č. 2 (2015), s. 161-166 ISSN 1598-5032 Institutional support: RVO:61389013 Keywords : polyesters * iron salen complexes * catalysis Subject RIV: CD - Macromolecular Chemistry Impact factor: 1.357, year: 2015

Precision Magnetic Elements for the SNS Storage Ring

International Nuclear Information System (INIS)

Danby, G.; Jackson, J.; Spataro, C.

1999-01-01

Magnetic elements for an accumulator storage ring for a 1 GeV Spallation Neutron Source (SNS) have been under design. The accumulation of very high intensity protons in a storage ring requires beam optical elements of very high purity to minimize higher order resonances in the presence of space charge. The parameters of the elements required by the accumulator lattice design have been reported. The dipoles have a 17 cm gap and are 124 cm long. The quadrupoles have a physical length to aperture diameter ratio of 40 cm/21 cm and of 45 cm/31 cm. Since the elements have a large aperture and short length, optimizing the optical effects of magnet ends is the major design challenge. Two dimensional (2D) computer computations can, at least on paper, produce the desired accuracy internal to magnets, i.e. constant dipole fields and linear quadrupole gradients over the desired aperture to 1 x 10 -4 . To minimize undesirable end effects three dimensional (3D) computations can be used to design magnet ends. However, limitations on computations can occur, such as necessary finite boundary conditions, actual properties of the iron employed, hysteresis effects, etc., which are slightly at variance with the assumed properties. Experimental refinement is employed to obtain the desired precision

Topological ring currents in the "empty" ring of benzo-annelated perylenes.

Science.gov (United States)

Dickens, Timothy K; Mallion, Roger B

2011-01-27

Cyclic conjugation in benzo-annelated perylenes is examined by means of the topological π-electron ring currents calculated for each of their constituent rings, in a study that is an exact analogy of a recent investigation by Gutman et al. based on energy-effect values for the corresponding rings in each of these structures. "Classical" approaches, such as Kekulé structures, Clar "sextet" formulas, and circuits of conjugation, predict that the central ring in perylene is "empty" and thus contributes negligibly to cyclic conjugation. However, conclusions from the present calculations of topological ring currents agree remarkably with those arising from the earlier study involving energy-effect values in that, contrary to what would be predicted from the classical approaches, rings annelated in an angular fashion relative to the central ring of these perylene structures materially increase the extent of that ring's involvement in cyclic conjugation. It is suggested that such close quantitative agreement between the predictions of these two superficially very different indices (energy effect and topological ring current) might be due to the fact that, ultimately, both depend, albeit in ostensibly quite different ways, only on an adjacency matrix that contains information about the carbon-carbon connectivity of the conjugated system in question.

Iron Refractory Iron Deficiency Anaemia: A Rare Cause of Iron Deficiency Anaemia

LENUS (Irish Health Repository)

McGrath, T

2018-01-01

We describe the case of a 17-month-old boy with a hypochromic microcytic anaemia, refractory to oral iron treatment. After exclusion of dietary and gastrointestinal causes of iron deficiency, a genetic cause for iron deficiency was confirmed by finding two mutations in the TMPRSS6 gene, consistent with a diagnosis of iron-refractory iron deficiency anaemia (IRIDA).

Doctors with dyslexia: strategies and support.

Science.gov (United States)

Locke, Rachel; Alexander, Gail; Mann, Richard; Kibble, Sharon; Scallan, Samantha

2017-10-01

Looking beyond dyslexia as an individual doctor's issue requires adjusting a working environment to better serve the needs of doctors with dyslexia. With an increasing number of doctors disclosing dyslexia at medical school, how can educators best provide this support? Our research looks at the impact of dyslexia on clinical practice and the coping strategies used by doctors to minimise the effect. Qualitative data were collected from 14 doctors with dyslexia using semi-structured interviews and by survey. 'In situ' demonstration interviews were conducted in order to understand how dyslexia is managed in the workplace from first-hand experience. Employers and educators who have responsibility for meeting the needs of this group were also consulted. Even in cases of doctors who had a diagnosis, they often did not disclose their dyslexia to their employer. Study participants reported having developed individual ways of coping and devised useful 'workarounds'. Support from employers comes in the form of 'reasonable adjustments', although from our data we cannot be sure that such adjustments contribute to an 'enabling' work environment. Supportive characteristics included the opportunity to shadow others and the time and space to complete paperwork on a busy ward. How can educators best provide support [for doctors with dyslexia]? Doctors with dyslexia need to be helped to feel comfortable enough to disclose. Educators need to challenge any negative assumptions that exist as well as promote understanding about the elements that contribute to a positive working environment. As a result of the research there is now practice available for educators to identify evidence-based strategies and resources. © 2016 John Wiley & Sons Ltd and The Association for the Study of Medical Education.

Epilepsy - what to ask your doctor - adult

Science.gov (United States)

What to ask your doctor about epilepsy - adult; Seizures - what to ask your doctor - adult; Seizure - what to ask your doctor ... call to find more information about driving and epilepsy? What should I discuss with my boss at ...

Open notes: doctors and patients signing on.

Science.gov (United States)

Delbanco, Tom; Walker, Jan; Darer, Jonathan D; Elmore, Joann G; Feldman, Henry J; Leveille, Suzanne G; Ralston, James D; Ross, Stephen E; Vodicka, Elisabeth; Weber, Valerie D

2010-07-20

Few patients read their doctors' notes, despite having the legal right to do so. As information technology makes medical records more accessible and society calls for greater transparency, patients' interest in reading their doctors' notes may increase. Inviting patients to review these notes could improve understanding of their health, foster productive communication, stimulate shared decision making, and ultimately lead to better outcomes. Yet, easy access to doctors' notes could have negative consequences, such as confusing or worrying patients and complicating rather than improving patient-doctor communication. To gain evidence about the feasibility, benefits, and harms of providing patients ready access to electronic doctors' notes, a team of physicians and nurses have embarked on a demonstration and evaluation of a project called OpenNotes. The authors describe the intervention and share what they learned from conversations with doctors and patients during the planning stages. The team anticipates that "open notes" will spread and suggests that over time, if drafted collaboratively and signed by both doctors and patients, they might evolve to become contracts for care.

An Electron-Diffraction Examination of Cast-Iron Piston Rings from Single-Cylinder Aircraft-Engine Tests

Science.gov (United States)

1945-02-01

found t; a great extent on thn ueed cylinder barrel ( SAE 4140 steel) and to a lesser extent on the top ohrmne- plated ring of the aesembl.yafter it had...on the used cylinder barrel (W 4140 steel) used in the tests and, to a lesser extent, on the used top chrome-platedring of the piston assembly. The

Learning through inter- and intradisciplinary problem solving: using cognitive apprenticeship to analyse doctor-to-doctor consultation.

Science.gov (United States)

Pimmer, Christoph; Pachler, Norbert; Nierle, Julia; Genewein, Urs

2012-12-01

Today's healthcare can be characterised by the increasing importance of specialisation that requires cooperation across disciplines and specialities. In view of the number of educational programmes for interdisciplinary cooperation, surprisingly little is known on how learning arises from interdisciplinary work. In order to analyse the learning and teaching practices of interdisciplinary cooperation, a multiple case study research focused on how consults, i.e., doctor-to-doctor consultations between medical doctors from different disciplines were carried out: semi-structured interviews with doctors of all levels of seniority from two hospital sites in Switzerland were conducted. Starting with a priori constructs based on the 'methods' underpinning cognitive apprenticeship (CA), the transcribed interviews were analysed according to the principles of qualitative content analysis. The research contributes to three debates: (1) socio-cognitive and situated learning, (2) intra- and interdisciplinary learning in clinical settings, and (3), more generally, to cooperation and problem solving. Patient cases, which necessitate the cooperation of doctors in consults across boundaries of clinical specialisms, trigger intra- as well as interdisciplinary learning and offer numerous and varied opportunities for learning by requesting doctors as well as for on-call doctors, in particular those in residence. The relevance of consults for learning can also be verified from the perspective of CA which is commonly used by experts, albeit in varying forms, degrees of frequency and quality, and valued by learners. Through data analysis a model for collaborative problem-solving and help-seeking was developed which shows the interplay of pedagogical 'methods' of CA in informal clinical learning contexts.

Effective doctor-patient communication: an updated examination.

Science.gov (United States)

Matusitz, Jonathan; Spear, Jennifer

2014-01-01

This article examines, in detail, the quality of doctor-patient interaction. Doctor-patient communication is such a powerful indicator of health care quality that it can determine patients' self-management behavior and health outcomes. The medical visit (i.e., the medical encounter) plays a pivotal role in the health care process. In fact, doctor-patient communication is one of the most essential dynamics in health care, affecting the course of patient care and patient compliance with recommendations for care. Unlike many other analyses (that often look at only one or two specific aspects of doctor-patient relationships), this analysis is more encompassing; it looks at doctor-patient communication from multiple perspectives.

Kayser-Fleischer Rings

Science.gov (United States)

... Support Contacts Lab Tracker/Copper Calculator Stories Programs & Research ... About Everything you need to know about Wilson Disease Kayser-Fleischer Rings Definition Kayser-Fleischer Ring: Clinical sign. Brownish-yellow ring visible around the corneo- ...

Understanding doctors' ethical challenges as role virtue conflicts.

Science.gov (United States)

McDougall, Rosalind

2013-01-01

This paper argues that doctors' ethical challenges can be usefully conceptualised as role virtue conflicts. The hospital environment requires doctors to be simultaneously good doctors, good team members, good learners and good employees. I articulate a possible set of role virtues for each of these four roles, as a basis for a virtue ethics approach to analysing doctors' ethical challenges. Using one junior doctor's story, I argue that understanding doctors' ethical challenges as role virtue conflicts enables recognition of important moral considerations that are overlooked by other approaches to ethical analysis. © 2011 Blackwell Publishing Ltd.

Planetary Rings

Science.gov (United States)

Nicholson, P. D.

2001-11-01

A revolution in the studies in planetary rings studies occurred in the period 1977--1981, with the serendipitous discovery of the narrow, dark rings of Uranus, the first Voyager images of the tenuous jovian ring system, and the many spectacular images returned during the twin Voyager flybys of Saturn. In subsequent years, ground-based stellar occultations, HST observations, and the Voyager flybys of Uranus (1986) and Neptune (1989), as well as a handful of Galileo images, provided much additional information. Along with the completely unsuspected wealth of detail these observations revealed came an unwelcome problem: are the rings ancient or are we privileged to live at a special time in history? The answer to this still-vexing question may lie in the complex gravitational interactions recent studies have revealed between the rings and their retinues of attendant satellites. Among the four known ring systems, we see elegant examples of Lindblad and corotation resonances (first invoked in the context of galactic disks), electromagnetic resonances, spiral density waves and bending waves, narrow ringlets which exhibit internal modes due to collective instabilities, sharp-edged gaps maintained via tidal torques from embedded moonlets, and tenuous dust belts created by meteoroid impact onto parent bodies. Perhaps most puzzling is Saturn's multi-stranded, clumpy F ring, which continues to defy a simple explanation 20 years after it was first glimpsed in grainy images taken by Pioneer 11. Voyager and HST images reveal a complex, probably chaotic, dynamical interaction between unseen parent bodies within this ring and its two shepherd satellites, Pandora and Prometheus. The work described here reflects contributions by Joe Burns, Jeff Cuzzi, Luke Dones, Dick French, Peter Goldreich, Colleen McGhee, Carolyn Porco, Mark Showalter, and Bruno Sicardy, as well as those of the author. This research has been supported by NASA's Planetary Geology and Geophysics program and the

Superconducting magnets for high energy storage rings

International Nuclear Information System (INIS)

Sampson, W.B.

1977-01-01

Superconducting dipole and quadrupole magnets were developed for the proton-proton intersecting storage accelerator ISABELLE. Full size prototypes of both kinds of magnets were constructed and successfully tested. The coils are fabricated from a single layer of wide braided superconductor and employ a low temperature iron core. This method of construction leads to two significant performance advantages; little or no training, and the ability of the coil to absorb its total magnetic stored energy without damage. A high pressure (15 atm) helium gas system is used for cooling. Measurements of the random field errors are compared with the expected field distribution. Three magnets (two dipoles and one quadrupole) were assembled into a segment of the accelerator ring structure (half cell). The performance of this magnet array, which is coupled in series both electrically and cryogenically, is also summarized

Analysis of a neutron scattering integral experiment on iron for neutron energies from 1 to 15 MeV

International Nuclear Information System (INIS)

Cramer, S.N.; Oblow, E.M.

1976-11-01

Monte Carlo calculations were made to analyze the results of an integral experiment with an iron sample to determine the adequacy of neutron scattering cross section data for iron. The experimental results analyzed included energy-dependent NE-213 detector count rates at a scattering angle of 90 deg and pulse-height spectra for scattered neutrons produced in an iron ring pulsed with a 1- to 20-MeV neutron source. The pulse-height data were unfolded to generate secondary neutron spectra at 90 deg as a function of incident neutron energy. Multigroup Monte Carlo calculations using the MORSE code and ENDF/B-IV cross sections were made to analyze all reported results. Discrepancies between calculated and measured responses were found for inelastic scattering reactions in the range from 1 to 4 MeV. These results were related to deficiencies in ENDF/B-IV iron cross section data

Factors influencing trainee doctor emigration in a high income country: a mixed methods study.

Science.gov (United States)

Clarke, Nicholas; Crowe, Sophie; Humphries, Niamh; Conroy, Ronan; O'Hare, Simon; Kavanagh, Paul; Brugha, Ruairi

2017-09-25

The Global Code of Practice on the International Recruitment of Health Personnel focuses particularly on migration of doctors from low- and middle-income countries. Less is understood about migration from high-income countries. Recession has impacted several European countries in recent years, and in some cases emigration has reached unprecedented levels. This study measures and explores the predictors of trainee doctor emigration from Ireland. Using a partially mixed sequential dominant (quantitative) study design, a nationally representative sample of 893 trainee doctors was invited to complete an online survey. Of the 523 who responded (58.6% response rate), 423 were still in Ireland and responded to questions on factors influencing intention to practice medicine abroad and are the subjects of this study. Explanatory factors for intention to practice medicine in Ireland in the foreseeable future, the primary outcome, included demographic variables and experiences of working within the Irish health system. Associations were examined using univariable and multivariable logistic regression to estimate odds ratios for factors influencing the primary outcome. Qualitative interviews were conducted with 50 trainee doctors and analysed thematically, exploring issues associated with intention to practice medicine abroad. There were high levels of dissatisfaction among trainee doctors around working conditions, training and career progression opportunities in Ireland. However, most factors did not discriminate between intention to leave or stay. Factors that did predict intention to leave included dissatisfaction with one's work-life balance (odds ratio (OR) 2.51; 95% confidence interval (CI) 1.53-4.10; P < 0.001); feeling that the quality of training in Ireland was poor (OR 1.82; 95% CI 1.09-3.05; P = 0.002) and leaving for family or personal reasons (OR 1.85; 95% CI 1.08-3.17; P = 0.027). Qualitative findings illustrated the stress of doing postgraduate

A study on the piston ring wear in automotive engine Seat 1500 CA by means of radioactive tracer technique; Estudio del desgaste de segmentos en motor Seat 1500 CA mediante trazadores radiactivos

Energy Technology Data Exchange (ETDEWEB)

Val Cob, M del; Chul, Y; Fuentes Figuera de Vargas, J.

1971-07-01

The iron side wear in the chromium-plated top compression ring has been a matter of interest for the engine makers and it has been required by them to investigate the wear characteristics of the chromium-plated piston ring. Meanwhile, Bureau of Nuclear Energy in Spain (Junta de Energia Nuclear) and Seat Car Manufacturing Company (Sociedad Espanola de Automoviles de Turismo) agreed to study the wear characteristics of chromium-plated piston ring of type CA gasoline engine for Seat 1500 car by means of radioactive tracer technique. (Author) 9 refs.

Did You Hear the One About the Doctor? An Examination of Doctor Jokes Posted on Facebook

OpenAIRE

Davis, Matthew A; Haney, Carol Sue; Weeks, William B; Sirovich, Brenda E; Anthony, Denise L

2014-01-01

Background Social networking sites such as Facebook have become immensely popular in recent years and present a unique opportunity for researchers to eavesdrop on the collective conversation of current societal issues. Objective We sought to explore doctor-related humor by examining doctor jokes posted on Facebook. Methods We performed a cross-sectional study of 33,326 monitored Facebook users, 263 (0.79%) of whom posted a joke that referenced doctors on their Facebook wall during a 6-month o...

Proceedings of Arcom Doctoral Workshop Research Methodology

OpenAIRE

Scott, Lloyd

2018-01-01

Editorial Editorial Welcome to this special doctoral workshop on Research Methodology which forms part of what is now a well-established support mechanism for researchers in the discipline of the Built Environment and more particularly construction management. The ARCOM doctoral series, around now for some seventeen years, has addressed many of the diverse research areas that PhD researchers in the discipline have chosen to focus on in their doctoral journey. This doctoral workshop has as ...

Radon house doctor

International Nuclear Information System (INIS)

Nitschke, I.A.; Brennan, T.; Wadach, J.B.; O'Neil, R.

1986-01-01

The term house doctor may be generalized to include persons skilled in the use of instruments and procedures necessary to identify, diagnose, and correct indoor air quality problems as well as energy, infiltration, and structural problems in houses. A radon house doctor would then be a specialist in radon house problems. Valuable experience in the skills necessary to be developed by radon house doctors has recently been gained in an extensive radon monitoring and mitigation program in upstate New York sponsored by Niagara Mohawk Power Corporation and the New York State Energy Research and Development Authority. These skills, to be described in detail in this paper, include: (i) the use of appropriate instruments, (ii) the evaluation of the symptoms of a radon-sick house, (iii) the diagnostic procedures required to characterize radon sources in houses, (iv) the prescription procedures needed to specify treatment of the problem, (v) the supervision of the implementation of the treatment program, (vi) the check-up procedures required to insure the house cured of radon problems. 31 references, 3 tables

Women who doctor shop for prescription drugs.

Science.gov (United States)

Worley, Julie; Thomas, Sandra P

2014-04-01

Doctor shopping is a term used to describe a form of diversion of prescription drugs when patients visit numerous prescribers to obtain controlled drugs for illicit use. Gender differences exist in regard to prescription drug abuse and methods of diversion. The purpose of this phenomenological study guided by the existential philosophy of Merleau-Ponty was to understand the lived experience of female doctor shoppers. Interviews were conducted with 14 women, which were recorded, transcribed, and analyzed. Included in the findings are figural aspects of the participants' experience of doctor shopping related to the existential grounds of world, time, body, and others. Four themes emerged from the data: (a) feeding the addiction, (b) networking with addicts, (c) playing the system, and (d) baiting the doctors. The findings suggest several measures that nurses can take to reduce the incidence of doctor shopping and to provide better care for female doctor shoppers.

Distinction in Doctoral Education: Using Bourdieu's Tools to Assess the Socialization of Doctoral Students

Science.gov (United States)

Gopaul, Bryan

2011-01-01

This conceptual article uses the tools of Pierre Bourdieu (1977, 1986, 1990) to examine the socialization of doctoral students by suggesting that the processes of doctoral study highlight inequities among students. Using Young's (1990) social justice approach as a framework to complement the ideas of Bourdieu, I demonstrate how aspects of academic…

Child Development and the Coworking of Doctor and Teacher: A Waldorf School Doctor's Perspective.

Science.gov (United States)

Karnow, Gerald F.

This paper draws on the nearly 20 years' experiences of a school doctor working with teachers at the Rudolf Steiner School in New York City to describe general principles of assessing child development in relation to educational progress. The paper contrasts the customary role of school doctors (related to conducting physical examinations for…

Preparation for electron ring - plasma ring merging experiments in RECE-MERGE

International Nuclear Information System (INIS)

Taggart, D.; Sekiguchi, A.; Fleischmann, H.H.

1986-01-01

The formation of a mixed-CT using relativistic electron rings and gun-produced plasma rings by MERGE-ing them axially is simulated. This process is similar to the axial stacking of relativistic electron rings in RECE-Christa. The results of their first plasm production experiment are reported here. After study of the gun-produced plasma's properties is completed, the gun will be mounted at the downstream end of the vacuum tank and the source of relativistic electron rings will be at the upstream end. The two rings, formed at opposite ends of the tank, will be translated axially and merged

URGENT NEED OF A DOCTOR

CERN Multimedia

Medical Service

2001-01-01

IN URGENT NEED OF A DOCTOR GENEVA EMERGENCY SERVICES GENEVA AND VAUD 144 FIRE BRIGAD 118 POLICE 117 CERN FIREMEN 767-44-44 ANTI-POISONS CENTRE Open 24h/24h 01-251-51-51 Patient not fit to be moved, call family doctor, or: GP AT HOME, open 24h/24h 748-49-50 Association Of Geneva Doctors Emergency Doctors at home 07h-23h 322 20 20 Patient fit to be moved: HOPITAL CANTONAL CENTRAL 24 Micheli-du-Crest 372-33-11 ou 382-33-11 EMERGENCIES 382-33-11 ou 372-33-11 CHILDREN'S HOSPITAL 6 rue Willy-Donzé 372-33-11 MATERNITY 32 bvd.de la Cluse 382-68-16 ou 382-33-11 OPHTHALMOLOGY 22 Alcide Jentzer 382-33-11 ou 372-33-11 MEDICAL CENTRE CORNAVIN 1-3 rue du Jura 345 45 50 HOPITAL DE LA TOUR Meyrin EMERGENCIES 719-61-11 URGENCES PEDIATRIQUES 719-61-00 LA TOUR MEDICAL CENTRE 719-74-00 European EmergencyCall 112 FRANCE EMERGENCY SERVICES 15 FIRE BRIGADE 18 POLICE 17 CERN FIREMEN AT HOME 00-41-22-767-44-44 ANTI-POISONS CENTRE Open 24h/24h 04-72-11-69-11 All doctors will...

The Cape doctor 1807-1910: perspectives.

Science.gov (United States)

Phillips, Howard

2004-01-01

This chapter contrasts the Cape doctor in 1807 and in 1910, and finds that, in a whole variety of ways, the differences between the two were not of degree but of kind. Underlying this sea-change was the germ revolution of the late Victorian era, which transformed the Cape doctor out of all recognition, thereby laying important foundations for the development of the twentieth-century South African doctor.

Superconducting ring magnets of the PIOTRON Pi-meson therapy facility at SIN

Energy Technology Data Exchange (ETDEWEB)

Maix, R K; Meyer, G; Roman, T; Horvath, I; Vecsey, G; Zellweger, J

1982-01-01

Negative Pi-mesons seem to be very promising for cancer therapy, because of their well defined penetration depth and their enhanced energy deposition in the absorption region. A prototype Pi-meson therapy facility, called PIOTRON, has been constructed at SIN, where also pion beams of sufficient intensity are available. The central part of this system are two ring magnets, consisting each of 60 superconducting flat coils, with the aid of which 60 pion beams can be guided around a heavy iron shield and focused on the patient. In this paper the fabrication and the initial operation of these magnets is discussed.

Genetics Home Reference: iron-refractory iron deficiency anemia

Science.gov (United States)

... refractory iron deficiency anemia Iron-refractory iron deficiency anemia Printable PDF Open All Close All Enable Javascript ... expand/collapse boxes. Description Iron-refractory iron deficiency anemia is one of many types of anemia , which ...

Ring faults and ring dikes around the Orientale basin on the Moon.

Science.gov (United States)

Andrews-Hanna, Jeffrey C; Head, James W; Johnson, Brandon; Keane, James T; Kiefer, Walter S; McGovern, Patrick J; Neumann, Gregory A; Wieczorek, Mark A; Zuber, Maria T

2018-08-01

The Orientale basin is the youngest and best-preserved multiring impact basin on the Moon, having experienced only modest modification by subsequent impacts and volcanism. Orientale is often treated as the type example of a multiring basin, with three prominent rings outside of the inner depression: the Inner Rook Montes, the Outer Rook Montes, and the Cordillera. Here we use gravity data from NASA's Gravity Recovery and Interior Laboratory (GRAIL) mission to reveal the subsurface structure of Orientale and its ring system. Gradients of the gravity data reveal a continuous ring dike intruded into the Outer Rook along the plane of the fault associated with the ring scarp. The volume of this ring dike is ~18 times greater than the volume of all extrusive mare deposits associated with the basin. The gravity gradient signature of the Cordillera ring indicates an offset along the fault across a shallow density interface, interpreted to be the base of the low-density ejecta blanket. Both gravity gradients and crustal thickness models indicate that the edge of the central cavity is shifted inward relative to the equivalent Inner Rook ring at the surface. Models of the deep basin structure show inflections along the crust-mantle interface at both the Outer Rook and Cordillera rings, indicating that the basin ring faults extend from the surface to at least the base of the crust. Fault dips range from 13-22° for the Cordillera fault in the northeastern quadrant, to 90° for the Outer Rook in the northwestern quadrant. The fault dips for both outer rings are lowest in the northeast, possibly due to the effects of either the direction of projectile motion or regional gradients in pre-impact crustal thickness. Similar ring dikes and ring faults are observed around the majority of lunar basins.

Female physicist doctoral experiences

OpenAIRE

Katherine P. Dabney; Robert H. Tai

2013-01-01

The underrepresentation of women in physics doctorate programs and in tenured academic positions indicates a need to evaluate what may influence their career choice and persistence. This qualitative paper examines eleven females in physics doctoral programs and professional science positions in order to provide a more thorough understanding of why and how women make career choices based on aspects both inside and outside of school and their subsequent interaction. Results indicate that female...

Groups, rings, modules

CERN Document Server

Auslander, Maurice

2014-01-01

This classic monograph is geared toward advanced undergraduates and graduate students. The treatment presupposes some familiarity with sets, groups, rings, and vector spaces. The four-part approach begins with examinations of sets and maps, monoids and groups, categories, and rings. The second part explores unique factorization domains, general module theory, semisimple rings and modules, and Artinian rings. Part three's topics include localization and tensor products, principal ideal domains, and applications of fundamental theorem. The fourth and final part covers algebraic field extensions

Saturn's Rings Edge-on

Science.gov (United States)

1995-01-01

In one of nature's most dramatic examples of 'now-you see-them, now-you-don't', NASA's Hubble Space Telescope captured Saturn on May 22, 1995 as the planet's magnificent ring system turned edge-on. This ring-plane crossing occurs approximately every 15 years when the Earth passes through Saturn's ring plane.For comparison, the top picture was taken by Hubble on December 1, 1994 and shows the rings in a more familiar configuration for Earth observers.The bottom picture was taken shortly before the ring plane crossing. The rings do not disappear completely because the edge of the rings reflects sunlight. The dark band across the middle of Saturn is the shadow of the rings cast on the planet (the Sun is almost 3 degrees above the ring plane.) The bright stripe directly above the ring shadow is caused by sunlight reflected off the rings onto Saturn's atmosphere. Two of Saturn's icy moons are visible as tiny starlike objects in or near the ring plane. They are, from left to right, Tethys (slightly above the ring plane) and Dione.This observation will be used to determine the time of ring-plane crossing and the thickness of the main rings and to search for as yet undiscovered satellites. Knowledge of the exact time of ring-plane crossing will lead to an improved determination of the rate at which Saturn 'wobbles' about its axis (polar precession).Both pictures were taken with Hubble's Wide Field Planetary Camera 2. The top image was taken in visible light. Saturn's disk appears different in the bottom image because a narrowband filter (which only lets through light that is not absorbed by methane gas in Saturn's atmosphere) was used to reduce the bright glare of the planet. Though Saturn is approximately 900 million miles away, Hubble can see details as small as 450 miles across.The Wide Field/Planetary Camera 2 was developed by the Jet Propulsion Laboratory and managed by the Goddard Spaced Flight Center for NASA's Office of Space Science.This image and other images and

Hybrid Doctoral Program: Innovative Practices and Partnerships

Science.gov (United States)

Alvich, Dori; Manning, JoAnn; McCormick, Kathy; Campbell, Robert

2012-01-01

This paper reflects on how one mid-Atlantic University innovatively incorporated technology into the development of a hybrid doctoral program in educational leadership. The paper describes a hybrid doctoral degree program using a rigorous design; challenges of reworking a traditional syllabus of record to a hybrid doctoral program; the perceptions…

Cultural and musical activity among Norwegian doctors.

Science.gov (United States)

Nylenna, Magne; Aasland, Olaf Gjerløw

2013-06-25

The cultural and musical activity of Norwegian doctors was studied in 1993. We wished to re-examine their cultural and musical activity, analyse the development and study the correlation with satisfaction, health and other leisure activities. In the autumn of 2010, a survey was undertaken among a representative sample of economically active Norwegian doctors. The survey asked the same questions as in 1993, and the responses were also compared to the population studies conducted by Statistics Norway. We also used a cultural index that we have developed ourselves. Altogether 1,019 doctors (70%) responded to the survey. They reported a higher level of cultural activity in 2010 than in 1993, measured in terms of reading of non-medical literature and visits to the cinema, theatre and concerts. The doctors engaged in musical activity of their own especially frequently: 58% reported to be able to play an instrument, and 21% reported to play on a regular basis, which is more than among other academic professions. We found a significant correlation between the doctors' level of cultural activity and their job satisfaction, general satisfaction, self-reported health and physical activity. The doctors who engage most frequently in cultural activities are thus most satisfied with their work and with life in general. Furthermore, they also have better self-reported health. Norwegian doctors give priority to cultural and musical activities. The assertion that doctors are particularly fond of music is more than just a myth.

Effect of dietary iron source and iron status on iron bioavailability tests in the rat

International Nuclear Information System (INIS)

Zhang, D.; Hendricks, D.G.; Mahoney, A.W.

1986-01-01

Weanling male rats were made anemic in 7 days by feeding a low iron diet and bleeding. Healthy rats were fed the low iron diet supplemented with ferrous sulfate (29 ppm Fe). Each group was subdivided and fed for 10 days on test diets containing about 29 ppm iron that were formulated with meat:spinach mixtures or meat:soy mixtures to provided 100:0, 75:25, 50:50, 25:75, or 0:100% of the dietary iron from these sources or from a ferrous sulfate diet. After 3 days on the diets all rats were dosed orally with 2 or 5 micro curries of 59 Fe after a 18 hour fast and refeeding for 1.5 hours. Iron status influenced liver iron, carcass iron, liver radio activity and percent of radioactive dose retained. Diet influenced fecal iron and apparent absorption of iron. In iron bioavailability studies assessment methodology and iron status of the test subject greatly influences the estimates of the value of dietary sources of iron

Non-sensitized selective photochemical reduction of CO2 to CO under visible light with an iron molecular catalyst.

Science.gov (United States)

Rao, Heng; Bonin, Julien; Robert, Marc

2017-03-02

A substituted tetraphenyl iron porphyrin, bearing positively charged trimethylammonio groups at the para position of each phenyl ring, demonstrates its ability as a homogeneous molecular catalyst to selectively reduce CO 2 to CO under visible light irradiation in organic media without the assistance of a sensitizer and no competitive hydrogen evolution for several days.

Will Medical Technology Deskill Doctors?

Science.gov (United States)

Lu, Jingyan

2016-01-01

This paper discusses the impact of medical technology on health care in light of the fact that doctors are becoming more reliant on technology for obtaining patient information, making diagnoses and in carrying out treatments. Evidence has shown that technology can negatively affect doctor-patient communications, physical examination skills, and…

Doctorate Program Trains Industrial Chemists.

Science.gov (United States)

Chemical and Engineering News, 1982

1982-01-01

The University of Texas (Dallas) has initiated a new Ph.D. program specifically to train chemists for doctoral level work in industry (Doctor of Chemistry). Participants will complete three research practica (at an industrial site and in two laboratory settings) instead of the traditional dissertation, emphasizing breadth and flexibility in…

The Rotating Ring-Ring Electrode. Theory and Experiment

NARCIS (Netherlands)

Kuiken, H.K.; Bakkers, E.P.A.M.; Ligthart, H.; Kelly, J.J.

2000-01-01

A model is presented for the rotating ring-ring electrode. Although the electrode is defined by four characteristic lengths, it is shown that the collection efficiency depends on only two dimensionless parameters. A simple relationship between these and the corresponding parameters for the rotating

Did you hear the one about the doctor? An examination of doctor jokes posted on Facebook.

Science.gov (United States)

Davis, Matthew A; Haney, Carol Sue; Weeks, William B; Sirovich, Brenda E; Anthony, Denise L

2014-02-13

Social networking sites such as Facebook have become immensely popular in recent years and present a unique opportunity for researchers to eavesdrop on the collective conversation of current societal issues. We sought to explore doctor-related humor by examining doctor jokes posted on Facebook. We performed a cross-sectional study of 33,326 monitored Facebook users, 263 (0.79%) of whom posted a joke that referenced doctors on their Facebook wall during a 6-month observation period (December 15, 2010 to June 16, 2011). We compared characteristics of so-called jokers to nonjokers and identified the characteristics of jokes that predicted joke success measured by having elicited at least one electronic laugh (eg, an LOL or "laughing out loud") as well as the total number of Facebook "likes" the joke received. Jokers told 156 unique doctor jokes and were the same age as nonjokers but had larger social networks (median Facebook friends 227 vs 132, PFacebook likes (rate ratio [RR] 2.36, 95% CI 0.97-5.74). This study provides insight into the use of social networking sites for research pertaining to health and medicine, including the world of doctor-related humor.

For People with Osteoporosis: How to Find a Doctor

Science.gov (United States)

... With Osteoporosis: How to Find a Doctor For People With Osteoporosis: How to Find a Doctor Isabel ... a doctor with expertise in osteoporosis. For many people, finding a doctor who is knowledgeable about osteoporosis ...

Cholesterol - what to ask your doctor

Science.gov (United States)

... your doctor; What to ask your doctor about cholesterol ... What is my cholesterol level? What should my cholesterol level be? What are HDL ("good") cholesterol and LDL ("bad") cholesterol? Does my cholesterol ...

Wear Analysis of Top Piston Ring to Reduce Top Ring Reversal Bore Wear

Directory of Open Access Journals (Sweden)

P. Ilanthirayan

2017-12-01

Full Text Available The piston rings are the most important part in engine which controls the lubricating oil consumption and blowby of the gases. The lubricating film of oil is provided to seal of gases towards crankcase and also to give smooth friction free translatory motion between rings and liner. Of the three rings present top ring is more crucial as it does the main work of restricting gases downwards the crankcase. Boundary lubrication is present at the Top dead centre (TDC and Bottom dead centre (BDC of the liner surface. In addition to this, top ring is exposed to high temperature gases which makes the oil present near the top ring to get evaporated and decreasing its viscosity, making metal-metal contact most of the time. Due to this at TDC, excess wear happens on the liner which is termed as Top ring reversal bore wear. The wear rate depends upon many parameters such as lubrication condition, viscosity index, contact type, normal forces acting on ring, geometry of ring face, surface roughness, material property. The present work explores the wear depth for different geometries of barrel ring using Finite Element model with the help of Archard wear law and the same is validated through experimentation. The study reveals that Asymmetric barrel rings have less contact pressure which in turn reduces the wear at Top dead centre.

Women, Men and the Doctorate.

Science.gov (United States)

Centra, John A; Kuykendall, Nancy M.

This study describes the current status and professional development of a sample of women doctorates and compares them to a sample of men who have attained the same educational status. Chapters cover the sample and procedures used; employment patterns; doctorates in academe; publications, income, and job satisfaction; marriage and family life;…

PREFACE: Special section on vortex rings Special section on vortex rings

Science.gov (United States)

Fukumoto, Yasuhide

2009-10-01

This special section of Fluid Dynamics Research includes five articles on vortex rings in both classical and quantum fluids. The leading scientists of the field describe the trends in and the state-of-the-art development of experiments, theories and numerical simulations of vortex rings. The year 2008 was the 150th anniversary of 'vortex motion' since Hermann von Helmholtz opened up this field. In 1858, Helmholtz published a paper in Crelle's Journal which put forward the concept of 'vorticity' and made the first analysis of vortex motion. Fluid mechanics before that was limited to irrotational motion. In the absence of vorticity, the motion of an incompressible homogeneous fluid is virtually equivalent to a rigid-body motion in the sense that the fluid motion is determined once the boundary configuration is specified. Helmholtz proved, among other things, that, without viscosity, a vortex line is frozen into the fluid. This Helmholtz's law immediately implies the preservation of knots and links of vortex lines and its implication is enormous. One of the major trends of fluid mechanics since the latter half of the 20th century is to clarify the topological meaning of Helmholtz's law and to exploit it to develop theoretical and numerical methods to find the solutions of the Euler equations and to develop experimental techniques to gain an insight into fluid motion. Vortex rings are prominent coherent structures in a variety of fluid motions from the microscopic scale, through human and mesoscale to astrophysical scales, and have attracted people's interest. The late professor Philip G Saffman (1981) emphasized the significance of studies on vortex rings. One particular motion exemplifies the whole range of problems of vortex motion and is also a commonly known phenomenon, namely the vortex ring or smoke ring. Vortex rings are easily produced by dropping drops of one liquid into another, or by puffing fluid out of a hole, or by exhaling smoke if one has the skill

Doctoral Education

DEFF Research Database (Denmark)

Ridder, Hanne Mette Ochsner

2015-01-01

Doctoral education covers the “third cycle” of degrees following the bachelor’s and the master’s degree. The education of researchers is necessary for developing music therapy as a scientific discipline and calls for a certain research culture that not only brings knowledge on research...... with an integration of science and practice. This leads to a description of the principles of problem-based learning as a social constructive approach, problematization, self-directed learning and learning community. The chapter is concluded with an example of a model of doctoral education, the Aalborg model, where...... the coursework, supervision, and curriculum is based on problem-based learning. About the book: 'International Perspectives in Music Therapy Education and Training: Adapting to a Changing World,' the first anthology of its kind, edited by Professor Karen Goodman, brings noted educators from Brazil, Canada...

"Seeing a doctor is just like having a date": a qualitative study on doctor shopping among overactive bladder patients in Hong Kong.

Science.gov (United States)

Siu, Judy Yuen-Man

2014-02-06

Although having a regular primary care provider is noted to be beneficial to health, doctor shopping has been documented as a common treatment seeking behavior among chronically ill patients in different countries. However, little research has been conducted into the reasons behind doctor shopping behavior among patients with overactive bladder, and even less into how this behavior relates to these patients' illness and social experiences, perceptions, and cultural practices. Therefore, this study examines overactive bladder patients to investigate the reasons behind doctor shopping behavior. My study takes a qualitative approach, conducting 30 semi-structured individual interviews, with 30 overactive bladder patients in Hong Kong. My study found six primary themes that influenced doctor shopping behavior: lack of perceived need, convenience, work-provided medical insurance, unpleasant experiences with doctors, searching for a match doctor, and switching between biomedicine and traditional Chinese medicine. Besides the perceptual factors, participants' social environment, illness experiences, personal cultural preference, and cultural beliefs also intertwined to generate their doctor shopping behavior. Due to the low perceived need for a regular personal primary care physician, environmental factors such as time, locational convenience, and work-provided medical insurance became decisive in doctor shopping behavior. Patients' unpleasant illness experiences, stemming from a lack of understanding among many primary care doctors about overactive bladder, contributed to participants' sense of mismatch with these doctors, which induced them to shop for another doctor. Overactive bladder is a chronic bladder condition with very limited treatment outcome. Although patients with overactive bladder often require specialty urology treatment, it is usually beneficial for the patients to receive continuous, coordinated, comprehensive, and patient-centered support from their

Iron absorption in relation to iron status

International Nuclear Information System (INIS)

Magnusson, B.; Bjoern-Rasmussen, E.; Hallberg, L.; Rossander, L.

1981-01-01

The absorption from a 3 mg dose of ferrous iron was measured in 250 male subjects. The absorption was related to the log concentration of serum ferritin in 186 subjects of whom 99 were regular blood donors (r= -0.76), and to bone marrow haemosiderin grading in 52 subjects with varying iron status. The purpose was to try and establish a percentage absorption from such a dose that is representative of subjects who are borderline iron deficient. This information is necessary for food iron absorption studies in order (1) to calculate the absorption of iron from the diet at a given iron status and (2) compare the absorption of iron from different meals studied in different groups of subjects by different investigarors. The results suggest that an absorption of about 40% of a 3 mg reference dose of ferrous iron is given in a fasting state, roughly corresponds to the absorption in borderline-iron-deficient subjects. The results indicate that this 40% absorption value corresponds to a serum ferritin level of 30 μg/l and that food iron absorption in a group of subjects should be expressed preferably as the absorption corresponding to a reference-dose absorption of 45%, or possibly a serum ferritin level of 30 μg/l. (author)

Vortex rings

CERN Document Server

Akhmetov, D G

2009-01-01

This text on vortex rings covers their theoretical foundation, systematic investigations, and practical applications such as the extinction of fires at gushing oil wells. It pays special attention to the formation and motion of turbulent vortex rings.

Doctoral Program Selection Using Pairwise Comparisons.

Science.gov (United States)

Tadisina, Suresh K.; Bhasin, Vijay

1989-01-01

The application of a pairwise comparison methodology (Saaty's Analytic Hierarchy Process) to the doctoral program selection process is illustrated. A hierarchy for structuring and facilitating the doctoral program selection decision is described. (Author/MLW)

FUZZY RINGS AND ITS PROPERTIES

Directory of Open Access Journals (Sweden)

Karyati Karyati

2017-01-01

  One of algebraic structure that involves a binary operation is a group that is defined  an un empty set (classical with an associative binary operation, it has identity elements and each element has an inverse. In the structure of the group known as the term subgroup, normal subgroup, subgroup and factor group homomorphism and its properties. Classical algebraic structure is developed to algebraic structure fuzzy by the researchers as an example semi group fuzzy and fuzzy group after fuzzy sets is introduced by L. A. Zadeh at 1965. It is inspired of writing about semi group fuzzy and group of fuzzy, a research on the algebraic structure of the ring is held with reviewing ring fuzzy, ideal ring fuzzy, homomorphism ring fuzzy and quotient ring fuzzy with its properties. The results of this study are obtained fuzzy properties of the ring, ring ideal properties fuzzy, properties of fuzzy ring homomorphism and properties of fuzzy quotient ring by utilizing a subset of a subset level  and strong level  as well as image and pre-image homomorphism fuzzy ring.   Keywords: fuzzy ring, subset level, homomorphism fuzzy ring, fuzzy quotient ring

An iron-57 Moessbauer spectroscopic study of titania-supported iron- and iron-iridium catalysts

International Nuclear Information System (INIS)

Berry, F.J.; Jobson, S.

1992-01-01

57 Fe Moessbauer spectroscopy shows that titania-supported iron is reduced by treatment in hydrogen at significantly lower temperatures than corresponding silica- and alumina-supported catalysts. The metallic iron formed under hydrogen at 600deg C is partially converted to carbide by treatment in carbon monoxide and hydrogen. In contrast to its alumina- and silica-supported counterparts, the remainder of the titania-supported iron is unchanged by this gaseous mixture. The 57 Fe Moessbauer spectra of EXAFS show that iron and iridium in the titania-supported iron-iridium catalysts are reduced in hydrogen at even lower temperatures and, after treatment at 600deg C, are predominantly present as the iron-iridium alloy. The treatment of these reduced catalysts in carbon monoxide and hydrogen is shown by Moessbauer spectroscopy and EXAFS to induce the segregation of iron from the iron-iridium alloy and its conversion to iron oxide. (orig.)

Doctor and pharmacy shopping for controlled substances.

Science.gov (United States)

Peirce, Gretchen L; Smith, Michael J; Abate, Marie A; Halverson, Joel

2012-06-01

Prescription drug abuse is a major health concern nationwide, with West Virginia having one of the highest prescription drug death rates in the United States. Studies are lacking that compare living subjects with persons who died from drug overdose for evidence of doctor and pharmacy shopping for controlled substances. The study objectives were to compare deceased and living subjects in West Virginia for evidence of prior doctor and pharmacy shopping for controlled substances and to identify factors associated with drug-related death. A secondary data study was conducted using controlled substance, Schedule II-IV, prescription data from the West Virginia Controlled Substance Monitoring Program and drug-related death data compiled by the Forensic Drug Database between July 2005 and December 2007. A case-control design compared deceased subjects 18 years and older whose death was drug related with living subjects for prior doctor and pharmacy shopping. Logistic regression identified factors related to the odds of drug-related death. A significantly greater proportion of deceased subjects were doctor shoppers (25.21% vs. 3.58%) and pharmacy shoppers (17.48% vs. 1.30%) than living subjects. Approximately 20.23% of doctor shoppers were also pharmacy shoppers, and 55.60% of pharmacy shoppers were doctor shoppers. Younger age, greater number of prescriptions dispensed, exposure to opioids and benzodiazepines, and doctor and pharmacy shopping were factors with greater odds of drug-related death. Doctor and pharmacy shopping involving controlled substances were identified, and shopping behavior was associated with drug-related death. Prescription monitoring programs may be useful in identifying potential shoppers at the point of care.

Angina - what to ask your doctor

Science.gov (United States)

What to ask your doctor about angina and heart disease; Coronary artery disease - what to ask your doctor ... the signs and symptoms that I am having angina? Will I always have the same symptoms? What ...

Antibiotic removal from water: Elimination of amoxicillin and ampicillin by microscale and nanoscale iron particles

International Nuclear Information System (INIS)

Ghauch, Antoine; Tuqan, Almuthanna; Assi, Hala Abou

2009-01-01

Zerovalent iron powder (ZVI or Fe 0 ) and nanoparticulate ZVI (nZVI or nFe 0 ) are proposed as cost-effective materials for the removal of aqueous antibiotics. Results showed complete removal of Amoxicillin (AMX) and Ampicillin (AMP) upon contact with Fe 0 and nFe 0 . Antibiotics removal was attributed to three different mechanisms: (i) a rapid rupture of the β-lactam ring (reduction), (ii) an adsorption of AMX and AMP onto iron corrosion products and (iii) sequestration of AMX and AMP in the matrix of precipitating iron hydroxides (co-precipitation with iron corrosion products). Kinetic studies demonstrated that AMP and AMX (20 mg L -1 ) undergo first-order decay with half-lives of about 60.3 ± 3.1 and 43.5 ± 2.1 min respectively after contact with ZVI under oxic conditions. In contrast, reactions under anoxic conditions demonstrated better degradation with t 1/2 of about 11.5 ± 0.6 and 11.2 ± 0.6 min for AMP and AMX respectively. NaCl additions accelerated Fe 0 consumption, shortening the service life of Fe 0 treatment systems. - Fe 0 is efficient for the aqueous removal of the β-lactam antibiotics and chlorides enhanced the removal rate by sustaining the process of iron corrosion.

Polarization Insensitivity in Double-Split Ring and Triple-Split Ring Terahertz Resonators

International Nuclear Information System (INIS)

Wu Qian-Nan; Lan Feng; Tang Xiao-Pin; Yang Zi-Qiang

2015-01-01

A modified double-split ring resonator and a modified triple-split ring resonator, which offer polarization-insensitive performance, are investigated, designed and fabricated. By displacing the two gaps of the conventional double-split ring resonator away from the center, the second resonant frequency for the 0° polarized wave and the resonant frequency for the 90° polarized wave become increasingly close to each other until they are finally identical. Theoretical and experimental results show that the modified double-split ring resonator and the modified triple-split ring resonator are insensitive to different polarized waves and show strong resonant frequency dips near 433 and 444 GHz, respectively. The results of this work suggest new opportunities for the investigation and design of polarization-dependent terahertz devices based on split ring resonators. (paper)

Australian doctors and the visual arts. Part 2. Doctors as collectors, donors, gallery supporters and writers in New South Wales.

Science.gov (United States)

Hamilton, D G

1986-04-28

The contribution of doctors to the visual arts if being discussed in a series of six articles. The first article dealt with doctor-artists in new South Wales. In this, the second, doctors are discussed as collectors, donors, gallery supporters and writers in this State.

Children and their parents assessing the doctor-patient interaction: a rating system for doctors' communication skills.

Science.gov (United States)

Crossley, Jim; Eiser, Christine; Davies, Helena A

2005-08-01

Only a patient and his or her family can judge many of the most important aspects of the doctor-patient interaction. This study evaluates the feasibility and reliability of children and their families assessing the quality of paediatricians' interactions using a rating instrument developed specifically for this purpose. A reliability analysis using generalisability theory on the ratings from 352 doctor-patient interactions across different speciality clinics. Ratings were normally distributed. They were highest for 'overall' performance, and lowest for giving time to discuss the families' agenda. An appropriate sample of adults' ratings provided a reliable score (G = 0.7 with 15 raters), but children's ratings were too idiosyncratic to be reproducible (G = 0.36 with 15 raters). CONCLUSIONS AND FURTHER WORK: Accompanying adults can provide reliable ratings of doctors' interactions with children. Because an adult is usually present at the consultation their ratings provide a highly feasible and authentic approach. Sampling doctors' interactions from different clinics and with patients of both genders provides a universal picture of performance. The method is ideal to measure performance for in-training assessment or revalidation. Further work is in progress to evaluate the educational impact of feeding ratings back to the doctors being assessed, and their use in a range of clinical contexts.

"Seeing a doctor is just like having a date": a qualitative study on doctor shopping among overactive bladder patients in Hong Kong

Science.gov (United States)

2014-01-01

Background Although having a regular primary care provider is noted to be beneficial to health, doctor shopping has been documented as a common treatment seeking behavior among chronically ill patients in different countries. However, little research has been conducted into the reasons behind doctor shopping behavior among patients with overactive bladder, and even less into how this behavior relates to these patients’ illness and social experiences, perceptions, and cultural practices. Therefore, this study examines overactive bladder patients to investigate the reasons behind doctor shopping behavior. Methods My study takes a qualitative approach, conducting 30 semi-structured individual interviews, with 30 overactive bladder patients in Hong Kong. Results My study found six primary themes that influenced doctor shopping behavior: lack of perceived need, convenience, work-provided medical insurance, unpleasant experiences with doctors, searching for a match doctor, and switching between biomedicine and traditional Chinese medicine. Besides the perceptual factors, participants’ social environment, illness experiences, personal cultural preference, and cultural beliefs also intertwined to generate their doctor shopping behavior. Due to the low perceived need for a regular personal primary care physician, environmental factors such as time, locational convenience, and work-provided medical insurance became decisive in doctor shopping behavior. Patients’ unpleasant illness experiences, stemming from a lack of understanding among many primary care doctors about overactive bladder, contributed to participants’ sense of mismatch with these doctors, which induced them to shop for another doctor. Conclusions Overactive bladder is a chronic bladder condition with very limited treatment outcome. Although patients with overactive bladder often require specialty urology treatment, it is usually beneficial for the patients to receive continuous, coordinated

RINGED ACCRETION DISKS: EQUILIBRIUM CONFIGURATIONS

Energy Technology Data Exchange (ETDEWEB)

Pugliese, D.; Stuchlík, Z., E-mail: d.pugliese.physics@gmail.com, E-mail: zdenek.stuchlik@physics.cz [Institute of Physics and Research Centre of Theoretical Physics and Astrophysics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo náměstí 13, CZ-74601 Opava (Czech Republic)

2015-12-15

We investigate a model of a ringed accretion disk, made up by several rings rotating around a supermassive Kerr black hole attractor. Each toroid of the ringed disk is governed by the general relativity hydrodynamic Boyer condition of equilibrium configurations of rotating perfect fluids. Properties of the tori can then be determined by an appropriately defined effective potential reflecting the background Kerr geometry and the centrifugal effects. The ringed disks could be created in various regimes during the evolution of matter configurations around supermassive black holes. Therefore, both corotating and counterrotating rings have to be considered as being a constituent of the ringed disk. We provide constraints on the model parameters for the existence and stability of various ringed configurations and discuss occurrence of accretion onto the Kerr black hole and possible launching of jets from the ringed disk. We demonstrate that various ringed disks can be characterized by a maximum number of rings. We present also a perturbation analysis based on evolution of the oscillating components of the ringed disk. The dynamics of the unstable phases of the ringed disk evolution seems to be promising in relation to high-energy phenomena demonstrated in active galactic nuclei.

Stirling engine piston ring

Science.gov (United States)

Howarth, Roy B.

1983-01-01

A piston ring design for a Stirling engine wherein the contact pressure between the piston and the cylinder is maintained at a uniform level, independent of engine conditions through a balancing of the pressure exerted upon the ring's surface and thereby allowing the contact pressure on the ring to be predetermined through the use of a preloaded expander ring.

Physics of quantum rings

International Nuclear Information System (INIS)

Fomin, Vladimir M.

2014-01-01

Presents the new class of materials of quantum rings. Provides an elemental basis for low-cost high-performance devices promising for electronics, optoelectronics, spintronics and quantum information processing. Explains the physical properties of quantum rings to cover a gap in scientific literature. Presents the application of most advanced nanoengineering and nanocharacterization techniques. This book deals with a new class of materials, quantum rings. Innovative recent advances in experimental and theoretical physics of quantum rings are based on the most advanced state-of-the-art fabrication and characterization techniques as well as theoretical methods. The experimental efforts allow to obtain a new class of semiconductor quantum rings formed by capping self-organized quantum dots grown by molecular beam epitaxy. Novel optical and magnetic properties of quantum rings are associated with non-trivial topologies at the nanoscale. An adequate characterization of quantum rings is possible on the basis of modern characterization methods of nanostructures, such as Scanning Tunneling Microscopy. A high level of complexity is demonstrated to be needed for a dedicated theoretical model to adequately represent the specific features of quantum rings. The findings presented in this book contribute to develop low-cost high-performance electronic, spintronic, optoelectronic and information processing devices based on quantum rings.

How does the blue-ringed octopus (Hapalochlaena lunulata) flash its blue rings?

Science.gov (United States)

Mäthger, Lydia M; Bell, George R R; Kuzirian, Alan M; Allen, Justine J; Hanlon, Roger T

2012-11-01

The blue-ringed octopus (Hapalochlaena lunulata), one of the world's most venomous animals, has long captivated and endangered a large audience: children playing at the beach, divers turning over rocks, and biologists researching neurotoxins. These small animals spend much of their time in hiding, showing effective camouflage patterns. When disturbed, the octopus will flash around 60 iridescent blue rings and, when strongly harassed, bite and deliver a neurotoxin that can kill a human. Here, we describe the flashing mechanism and optical properties of these rings. The rings contain physiologically inert multilayer reflectors, arranged to reflect blue-green light in a broad viewing direction. Dark pigmented chromatophores are found beneath and around each ring to enhance contrast. No chromatophores are above the ring; this is unusual for cephalopods, which typically use chromatophores to cover or spectrally modify iridescence. The fast flashes are achieved using muscles under direct neural control. The ring is hidden by contraction of muscles above the iridophores; relaxation of these muscles and contraction of muscles outside the ring expose the iridescence. This mechanism of producing iridescent signals has not previously been reported in cephalopods and we suggest that it is an exceptionally effective way to create a fast and conspicuous warning display.

α-Skew π-McCoy Rings

Directory of Open Access Journals (Sweden)

Areej M. Abduldaim

2013-01-01

Full Text Available As a generalization of α-skew McCoy rings, we introduce the concept of α-skew π-McCoy rings, and we study the relationships with another two new generalizations, α-skew π1-McCoy rings and α-skew π2-McCoy rings, observing the relations with α-skew McCoy rings, π-McCoy rings, α-skew Armendariz rings, π-regular rings, and other kinds of rings. Also, we investigate conditions such that α-skew π1-McCoy rings imply α-skew π-McCoy rings and α-skew π2-McCoy rings. We show that in the case where R is a nonreduced ring, if R is 2-primal, then R is an α-skew π-McCoy ring. And, let R be a weak (α,δ-compatible ring; if R is an α-skew π1-McCoy ring, then R is α-skew π2-McCoy.

Patient perception of smartphone usage by doctors

Directory of Open Access Journals (Sweden)

Kerry G

2017-03-01

Full Text Available Georgina Kerry,1 Shyam Gokani,2 Dara Rasasingam,2 Alexander Zargaran,3 Javier Ash,2 Aaina Mittal2 1College of Medical and Dental Sciences, University of Birmingham, Birmingham, 2Faculty of Medicine, Imperial College London, London, 3Faculty of Medicine, St George’s University of London, London, UK Abstract: Technological advancements have revolutionized modern medicine and smartphones are now ubiquitous among health care professionals. The ability to look up information promptly is invaluable to doctors and medical students alike, but there is an additional contiguous benefit to patients. Queries can be answered more accurately through fingertip access to evidence-based medicine, and physicians have instant access to emergency care protocols. However, is consideration always extended to the patient’s perception of the use of smartphones by doctors? Do patients know why we use smartphones to assist us in their care? What do they think when they see a doctor using a smartphone?An independent question, conducted within a wider service evaluation (ethical approval not required, full verbal and written electronic consent provided by all patients at St. Mary’s Hospital, London, indicated that although the majority (91.0% of patients owned a smartphone, many (61.6% did not agree that the use of smartphones at work by doctors is professional. This highlights the potential for damage to the doctor–patient relationship. There is a risk that these patients will disconnect with care services with possible detriment to their health. Additionally, it is notable that a larger proportion of those patients aged >70 years found the use of smartphones by doctors at work unprofessional, compared with patients aged <70 years.Adequate communication between the doctor and patient is critical in ensuring that doctors can make use of modern technology to provide the best possible care and that patients are comfortable with this and do not feel isolated or

VUV optical ring resonator for Duke storage ring free electron laser

Energy Technology Data Exchange (ETDEWEB)

Park, S.H.; Litvinenko, V.N.; Madey, J.M.J. [Duke Univ., Durham, NC (United States)] [and others

1995-12-31

The conceptual design of the multifaceted-mirror ring resonator for Duke storage ring VUV FEL is presented. The expected performance of the OK-4 FEL with ring resonator is described. We discuss in this paper our plans to study reflectivity of VUV mirrors and their resistivity to soft X-ray spontaneous radiation from OK-4 undulator.

Higher iron bioavailability of a human-like collagen iron complex.

Science.gov (United States)

Zhu, Chenhui; Yang, Fan; Fan, Daidi; Wang, Ya; Yu, Yuanyuan

2017-07-01

Iron deficiency remains a public health problem around the world due to low iron intake and/or bioavailability. FeSO 4 , ferrous succinate, and ferrous glycinate chelate are rich in iron but have poor bioavailability. To solve the problem of iron deficiency, following previous research studies, a thiolated human-like collagen-ironcomplex supplement with a high iron content was prepared in an anaerobic workstation. In addition, cell viability tests were evaluated after conducting an MTT assay, and a quantitative analysis of the thiolated human-like collagen-iron digesta samples was performed using the SDS-PAGE method coupled with gel filtration chromatography. The iron bioavailability was assessed using Caco-2 cell monolayers and iron-deficiency anemia mice models. The results showed that (1) one mole of thiolated human-like collagen-iron possessed approximately 35.34 moles of iron; (2) thiolated human-like collagen-iron did not exhibit cytotoxity and (3) thiolated human-like collagen- iron digesta samples had higher bioavailability than other iron supplements, including FeSO 4 , ferrous succinate, ferrous glycine chelate and thiolated human-like collagen-Fe iron. Finally, the iron bioavailability was significantly enhanced by vitamin C. These results indicated that thiolated human-like collagen-iron is a promising iron supplement for use in the future.

Interaction Region Design for a Ring-Ring LHeC

CERN Document Server

Thompson, L N S; Bernard, N R; Fitterer, M; Holzer, B; Klein, M; Kostka, P

2011-01-01

tively low energy and moderately high intensity provides high luminosity TeV-scale e-p collisions at one of the LHC interaction points, running simultaneously with existing experiments. Two designs are studied; an electron ring situated in the LHC tunnel, and an electron linac. The focus of this paper is on the ring design. Designing an e-p machine presents interesting accelerator physics and design challenges, particularly when considering the interaction region. These include coupled optics, beam separation and unconventional mini-beta focusing schemes. Designs are constrained by an array of interdependent factors, including beam-beam interaction, detector dimensions and acceptance, luminosity and synchrotron radiation. Methods of addressing these complex issues are discussed. The current designs for the LHeC Ring-Ring interaction region and long straight section are presented and discussed, in the context of the project goals and design challenges encountered. Future developments and work are also discusse...

Talking to Your Doctor (For Teens)

Science.gov (United States)

... problems , weight concerns, depression, suicidal thoughts , and even body odor . You should be able to talk to your doctor about everything, but that's easier said than done. Being examined and questioned about your body can also be intimidating, especially when the doctor ...

Burnout and Doctors: Prevalence, Prevention and Intervention

Science.gov (United States)

Kumar, Shailesh

2016-01-01

Doctors are exposed to high levels of stress in the course of their profession and are particularly susceptible to experiencing burnout. Burnout has far-reaching implications on doctors; patients and the healthcare system. Doctors experiencing burnout are reported to be at a higher risk of making poor decisions; display hostile attitude toward patients; make more medical errors; and have difficult relationships with co-workers. Burnout among doctors also increases risk of depression; anxiety; sleep disturbances; fatigue; alcohol and drug misuse; marital dysfunction; premature retirement and perhaps most seriously suicide. Sources of stress in medical practice may range from the emotions arising in the context of patient care to the environment in which doctors practice. The extent of burnout may vary depending on the practice setting; speciality and changing work environment. Understanding dynamic risk factors associated with burnout may help us develop strategies for preventing and treating burnout. Some of these strategies will be reviewed in this paper. PMID:27417625

Burnout and Doctors: Prevalence, Prevention and Intervention

Directory of Open Access Journals (Sweden)

Shailesh Kumar

2016-06-01

Full Text Available Doctors are exposed to high levels of stress in the course of their profession and are particularly susceptible to experiencing burnout. Burnout has far-reaching implications on doctors; patients and the healthcare system. Doctors experiencing burnout are reported to be at a higher risk of making poor decisions; display hostile attitude toward patients; make more medical errors; and have difficult relationships with co-workers. Burnout among doctors also increases risk of depression; anxiety; sleep disturbances; fatigue; alcohol and drug misuse; marital dysfunction; premature retirement and perhaps most seriously suicide. Sources of stress in medical practice may range from the emotions arising in the context of patient care to the environment in which doctors practice. The extent of burnout may vary depending on the practice setting; speciality and changing work environment. Understanding dynamic risk factors associated with burnout may help us develop strategies for preventing and treating burnout. Some of these strategies will be reviewed in this paper.

The large superconducting solenoids for the g-2 muon storage ring

International Nuclear Information System (INIS)

Bunce, G.; Cullen, J.; Danby, G.

1994-01-01

The g-2 muon storage ring at Brookhaven National Laboratory consists of four large superconducting solenoids. The two outer solenoids, which are 15.1 meters in diameter, share a common cryostat. The two inner solenoids, which are 13.4 meters in diameter, are in separate cryostats. The two 24 turn inner solenoids are operated at an opposite polarity from the two 24 turn outer solenoids. This generates a dipole field between the inner and outer solenoids. The flux between the solenoids is returned through a C shaped iron return yoke that also shapes the dipole field. The integrated field around the 14 meter diameter storage ring must be good to about 1 part in one million over the 90 mm dia. circular cross section where the muons are stored, averaged over the azimuth. When the four solenoids carry their 5300 A design current, the field in the 18 centimeter gap between the poles is 1.45 T. When the solenoid operates at its design current 5.5 MJ is stored between the poles. The solenoids were wound on site at Brookhaven National Laboratory. The cryostats were built around the solenoid windings which are indirectly cooled using two-phase helium

Uniquely Strongly Clean Group Rings

Institute of Scientific and Technical Information of China (English)

WANG XIU-LAN

2012-01-01

A ring R is called clean if every element is the sum of an idempotent and a unit,and R is called uniquely strongly clean (USC for short) if every element is uniquely the sum of an idempotent and a unit that commute.In this article,some conditions on a ring R and a group G such that RG is clean are given.It is also shown that if G is a locally finite group,then the group ring RG is USC if and only if R is USC,and G is a 2-group.The left uniquely exchange group ring,as a middle ring of the uniquely clean ring and the USC ring,does not possess this property,and so does the uniquely exchange group ring.

[Physician's role in "medical drama" pitfall? Reflection of stereotypical images of doctors in context of contemporary doctor's series].

Science.gov (United States)

Köhler, M; Grabsch, C; Zellner, M; Noll-Hussong, M

2014-04-17

In contemporary U.S. doctor's series, the characters are usually represented by good-looking or typical character actors. The aim of our pilot study was to investigate whether the long-term impact of this format on German television viewers could have an influence on the choice of doctor in Germany. Two different groups of people anticipating TV consumption patterns were questioned: a first group of younger adults who knew theTV series was asked to judge their doctor choice using a web-based survey tool with respect to three criteria (sympathy, expertise and own treatment preference). The second group of adults beyond the 40th year of life who need not know theTV series were shown photos of the serial figures. Study participants should select the "doctor" of which they would most likely want to be treated and this based on two predetermined reasons (sympathy or expertise). Our results indicate that stereotypical images of doctors found high approval only in the first group of people, while the participants in the second group decided in majorityfora more realistic representation of average appearance.

The Professional Doctorate in Nursing: A Position Paper

Science.gov (United States)

Newman, Margaret A.

1975-01-01

The need for family-centered health care could be met by nurses now if they had a professional doctorate and the recognition and authority that go with it. The author distinguishes between an academic doctorate (Preparation for scholars) and a professional doctorate (a practice degree). (Author/BP)

Iron Abundances in Lunar Impact Basin Melt Sheets From Orbital Magnetic Field Data

Science.gov (United States)

Oliveira, Joana S.; Wieczorek, Mark A.; Kletetschka, Gunther

2017-12-01

Magnetic field data acquired from orbit shows that the Moon possesses many magnetic anomalies. Though most of these are not associated with known geologic structures, some are found within large impact basins within the interior peak ring. The primary magnetic carrier in lunar rocks is metallic iron, but indigenous lunar rocks are metal poor and cannot account easily for the observed field strengths. The projectiles that formed the largest impact basins must have contained a significant quantity of metallic iron, and a portion of this iron would have been retained on the Moon's surface within the impact melt sheet. Here we use orbital magnetic field data to invert for the magnetization within large impact basins using the assumption that the crust is unidirectionally magnetized. We develop a technique based on laboratory thermoremanent magnetization acquisition to quantify the relationship between the strength of the magnetic field at the time the rock cooled and the abundance of metal in the rock. If we assume that the magnetized portion of the impact melt sheet is 1 km thick, we find average abundances of metallic iron ranging from 0.11% to 0.45 wt %, with an uncertainty of a factor of about 3. This abundance is consistent with the metallic iron abundances in sampled lunar impact melts and the abundance of projectile contamination in terrestrial impact melts. These results help constrain the composition of the projectile, the impact process, and the time evolution of the lunar dynamo.

Influence of ring growth rate on damage development in hot ring rolling

NARCIS (Netherlands)

Wang, C.; Geijselaers, H. J.M.; Omerspahic, E.; Recina, V.; van den Boogaard, A. H.

2015-01-01

As an incremental forming process of bulk metal, ring rolling provides a cost effective process route to manufacture seamless rings. In the production of hot rolled rings, defects such as porosity can sometimes be found in high alloyed steel, manufactured from ingots having macro-segregation. For

Richard W. Ziolkowski Receives Honorary Doctorate

DEFF Research Database (Denmark)

Breinbjerg, Olav

2012-01-01

At the annual Commemoration of the Technical University of Denmark (DTU) on April 27, 2012, Prof. Richard W. Ziolkowski, University of Arizona (UoA), received DTU's highest academic degree, the Honorary Doctor degree: Doctor Technices Honoris Causa (Figure 1). Prof. Ziolkowski has been a close...

IN URGENT NEED OF A DOCTOR

CERN Multimedia

Medical Service

2001-01-01

IN URGENT NEED OF A DOCTOR GENEVA EMERGENCY SERVICES GENEVA AND VAUD 144 FIRE BRIGADE 118 POLICE 117 CERN FIREMEN 767-44-44 ANTI-POISONS CENTRE Open 24h/24h 01-251-51-51 Patient not fit to be moved, call family doctor, or: GP AT HOME, open 24h/24h 748-49-50 Association Of Geneva Doctors Emergency Doctors at home 07h-23h 322 20 20 Patient fit to be moved: HOPITAL CANTONAL CENTRAL 24 Micheli-du-Crest 372-33-11 ou 382-33-11 EMERGENCIES 382-33-11 ou 372-33-11 CHILDREN'S HOSPITAL 6 rue Willy-Donzé 372-33-11 MATERNITY 32 bvd.de la Cluse 382-68-16 ou 382-33-11 OPHTHALMOLOGY 22 Alcide Jentzer 382-33-11 ou 372-33-11 MEDICAL CENTRE CORNAVIN 1-3 rue du Jura 345 45 50 HOPITAL DE LA TOUR Meyrin EMERGENCIES 719-61-11 URGENCES PEDIATRIQUES 719-61-00 LA TOUR MEDICAL CENTRE 719-74-00 European Emergency Call 112 FRANCE EMERGENCY SERVICES 15 FIRE BRIGADE 18 POLICE 17 CERN FIREMEN AT HOME 00-41-22-767-44-44 ANTI-POISONS CENTRE Open 24h/24h 04-72-11-69-11 All doctors ...

Ring rotational speed trend analysis by FEM approach in a Ring Rolling process

Science.gov (United States)

Allegri, G.; Giorleo, L.; Ceretti, E.

2018-05-01

Ring Rolling is an advanced local incremental forming technology to fabricate directly precise seamless ring-shape parts with various dimensions and materials. In this process two different deformations occur in order to reduce the width and the height of a preform hollow ring; as results a diameter expansion is obtained. In order to guarantee a uniform deformation, the preform is forced toward the Driver Roll whose aim is to transmit the rotation to the ring. The ring rotational speed selection is fundamental because the higher is the speed the higher will be the axial symmetry of the deformation process. However, it is important to underline that the rotational speed will affect not only the final ring geometry but also the loads and energy needed to produce it. Despite this importance in industrial environment, usually, a constant value for the Driver Roll angular velocity is set so to result in a decreasing trend law for the ring rotational speed. The main risk due to this approach is not fulfilling the axial symmetric constrain (due to the diameter expansion) and to generate a high localized ring section deformation. In order to improve the knowledge about this topic in the present paper three different ring rotational speed trends (constant, linearly increasing and linearly decreasing) were investigated by FEM approach. Results were compared in terms of geometrical and dimensional analysis, loads and energies required.

Mechanical improvement of metal reinforcement rings for a finite ring-shaped superconducting bulk

Science.gov (United States)

Huang, Chen-Guang; Zhou, You-He

2018-03-01

As a key technique, reinforcement of type-II superconducting bulks with metal rings can efficiently improve their mechanical properties to enhance the maximum trapped field. In this paper, we study the magnetostrictive and fracture behaviors of a finite superconducting ring bulk reinforced by three typical reinforcing structures composed of metal rings during the magnetizing process by means of the minimization of magnetic energy and the finite element method. After a field-dependent critical current density is adopted, the magnetostriction, pinning-induced stress, and crack tip stress intensity factor are calculated considering the demagnetization effects. The results show that the mechanical properties of the ring bulk are strongly dependent on the reinforcing structure and the material and geometrical parameters of the metal rings. Introducing the metal ring can significantly reduce the hoop stress, and the reduction effect by internal reinforcement is much improved relative to external reinforcement. By comparison, bilateral reinforcement seems to be the best candidate structure. Only when the metal rings have particular Young's modulus and radial thickness will they contribute to improve the mechanical properties the most. In addition, if an edge crack is pre-existing in the ring bulk, the presence of metal rings can effectively avoid crack propagation since it reduces the crack tip stress intensity factor by nearly one order of magnitude.

Iron

Science.gov (United States)

Iron is a mineral that our bodies need for many functions. For example, iron is part of hemoglobin, a protein which carries ... It helps our muscles store and use oxygen. Iron is also part of many other proteins and ...

A cascade of iron-containing proteins governs the genetic iron starvation response to promote iron uptake and inhibit iron storage in fission yeast.

Directory of Open Access Journals (Sweden)

Javier Encinar del Dedo

2015-03-01

Full Text Available Iron is an essential cofactor, but it is also toxic at high levels. In Schizosaccharomyces pombe, the sensor glutaredoxin Grx4 guides the activity of the repressors Php4 and Fep1 to mediate a complex transcriptional response to iron deprivation: activation of Php4 and inactivation of Fep1 leads to inhibition of iron usage/storage, and to promotion of iron import, respectively. However, the molecular events ruling the activity of this double-branched pathway remained elusive. We show here that Grx4 incorporates a glutathione-containing iron-sulfur cluster, alone or forming a heterodimer with the BolA-like protein Fra2. Our genetic study demonstrates that Grx4-Fra2, but not Fep1 nor Php4, participates not only in iron starvation signaling but also in iron-related aerobic metabolism. Iron-containing Grx4 binds and inactivates the Php4 repressor; upon iron deprivation, the cluster in Grx4 is probably disassembled, the proteins dissociate, and Php4 accumulates at the nucleus and represses iron consumption genes. Fep1 is also an iron-containing protein, and the tightly bound iron is required for transcriptional repression. Our data suggest that the cluster-containing Grx4-Fra2 heterodimer constitutively binds to Fep1, and upon iron deprivation the disassembly of the iron cluster between Grx4 and Fra2 promotes reverse metal transfer from Fep1 to Grx4-Fra2, and de-repression of iron-import genes. Our genetic and biochemical study demonstrates that the glutaredoxin Grx4 independently governs the Php4 and Fep1 repressors through metal transfer. Whereas iron loss from Grx4 seems to be sufficient to release Php4 and allow its nuclear accumulation, total or partial disassembly of the Grx4-Fra2 cluster actively participates in iron-containing Fep1 activation by sequestering its iron and decreasing its interaction with promoters.

Reasons for Consulting a Doctor on the Internet: Web Survey of Users of an Ask the Doctor Service

OpenAIRE

Umefjord, Göran; Petersson, Göran; Hamberg, Katarina

2003-01-01

Background In 1998 the Swedish noncommercial public health service Infomedica opened an Ask the Doctor service on its Internet portal. At no charge, anyone with Internet access can use this service to ask questions about personal health-related and disease-related matters. Objective To study why individuals choose to consult previously-unknown doctors on the Internet. Methods Between November 1, 2001, and January 31, 2002 a Web survey of the 3622 Ask the Doctor service users, 1036 men (29%) a...

Ring correlations in random networks.

Science.gov (United States)

Sadjadi, Mahdi; Thorpe, M F

2016-12-01

We examine the correlations between rings in random network glasses in two dimensions as a function of their separation. Initially, we use the topological separation (measured by the number of intervening rings), but this leads to pseudo-long-range correlations due to a lack of topological charge neutrality in the shells surrounding a central ring. This effect is associated with the noncircular nature of the shells. It is, therefore, necessary to use the geometrical distance between ring centers. Hence we find a generalization of the Aboav-Weaire law out to larger distances, with the correlations between rings decaying away when two rings are more than about three rings apart.

A Novel Practical Synthesis of Phenanthrenes Using Iron(Ⅲ) Chloride Involved Intramolecular Oxidative Coupling at Room Temperature

Institute of Scientific and Technical Information of China (English)

L(U),Mao-Yun; WANG,Kai-Liang; CAI,Fei; WANG,Hai-Ying; WANG,Qing-Min

2008-01-01

Iron(Ⅲ) chloride has been used to prepare the polymethoxy substituted phenanthrene derivatives via in-tramolecular oxidative coupling of (E or Z)-2,3-di(substituted phenyl)acrylate at room temperature in excellent yields. Mild reaction conditions and the use of inexpensive and nontoxic FeCI3 provide a novel practical and large-scaled viable route for the synthesis of the important phenanthrene rings.

State Level Review of Doctoral Programs in Texas.

Science.gov (United States)

Whittington, Nil

Review of doctoral degree programs in Texas public colleges and universities is discussed. Attention is directed to review procedures and strengths and weaknesses in the state's doctoral programs in educational psychology, counseling and guidance, and student personnel services. Doctoral programs were reviewed because of their high cost and a…

Dietary iron intake, iron status, and gestational diabetes.

Science.gov (United States)

Zhang, Cuilin; Rawal, Shristi

2017-12-01

Pregnant women are particularly vulnerable to iron deficiency and related adverse pregnancy outcomes and, as such, are routinely recommended for iron supplementation. Emerging evidence from both animal and population-based studies, however, has raised potential concerns because significant associations have been observed between greater iron stores and disturbances in glucose metabolism, including increased risk of type 2 diabetes among nonpregnant individuals. Yet, the evidence is uncertain regarding the role of iron in the development of gestational diabetes mellitus (GDM), a common pregnancy complication which has short-term and long-term adverse health ramifications for both women and their children. In this review, we critically and systematically evaluate available data examining the risk of GDM associated with dietary iron, iron supplementation, and iron status as measured by blood concentrations of several indicators. We also discuss major methodologic concerns regarding the available epidemiologic studies on iron and GDM. © 2017 American Society for Nutrition.

Studies on the pathogenesis in iron deficiency anemia Part 1. Urinary iron excretion in iron deficiency anemia patients and rats in various iron states

OpenAIRE

中西,徳彦

1991-01-01

In the "iron excretion test" , urinary iron excretion after injection of saccharated iron oxide has been reported to be accelerated in relapsing idiopathic iron deficiency anemia. To determine the relevance of urinary iron excretion to clinical factors other than iron metabolism, 15 clinical parameters were evaluated. The serum creatinine level was positively and the serum albumin level was negatively correlated with urinary iron excretion, showing coefficients of r＝0.97,－0.86 respectively, a...

Alpha - Skew Pi - Armendariz Rings

Directory of Open Access Journals (Sweden)

Areej M Abduldaim

2018-03-01

Full Text Available In this article we introduce a new concept called Alpha-skew Pi-Armendariz rings (Alpha - S Pi - ARas a generalization of the notion of Alpha-skew Armendariz rings.Another important goal behind studying this class of rings is to employ it in order to design a modern algorithm of an identification scheme according to the evolution of using modern algebra in the applications of the field of cryptography.We investigate general properties of this concept and give examples for illustration. Furthermore, this paperstudy the relationship between this concept and some previous notions related to Alpha-skew Armendariz rings. It clearly presents that every weak Alpha-skew Armendariz ring is Alpha-skew Pi-Armendariz (Alpha-S Pi-AR. Also, thisarticle showsthat the concepts of Alpha-skew Armendariz rings and Alpha-skew Pi- Armendariz rings are equivalent in case R is 2-primal and semiprime ring.Moreover, this paper proves for a semicommutative Alpha-compatible ringR that if R[x;Alpha] is nil-Armendariz, thenR is an Alpha-S Pi-AR. In addition, if R is an Alpha - S Pi -AR, 2-primal and semiprime ring, then N(R[x;Alpha]=N(R[x;Alpha]. Finally, we look forwardthat Alpha-skew Pi-Armendariz rings (Alpha-S Pi-ARbe more effect (due to their properties in the field of cryptography than Pi-Armendariz rings, weak Armendariz rings and others.For these properties and characterizations of the introduced concept Alpha-S Pi-AR, we aspire to design a novel algorithm of an identification scheme.

Doctoral Education in Nursing: Future Directions

Science.gov (United States)

Downs, Florence S.

1978-01-01

Problems that confront nursing education and the quality of doctoral preparation are discussed in this article and include the steep rise in requests from nurses for admission into doctoral programs and tight university budgets; other concerns are the development of scholars and sharing research findings. (TA)

Tuning of Magnetic Anisotropy in Hexairon(III) Rings by Host-Guest Interactions: An Investigation by High-Field Torque Magnetometry.

Science.gov (United States)

Cornia; Affronte; Jansen; Abbati; Gatteschi

1999-08-01

Full chemical control of magnetic anisotropy in hexairon(III) rings can be achieved by varying the size of the guest alkali metal ion. Dramatically different anisotropies characterize the Li(I) and Na(I) complexes of [Fe(6)(OMe)(12)(L)(6)] (L=1,3-propanedione derivatives; a schematic representation of the Li(I) complex is shown), as revealed by high-field torque magnetometry-Iron: (g), oxygen: o, carbon: o, Li(+): plus sign in circle.

Plasma-ring, fast-opening switch

International Nuclear Information System (INIS)

Hartman, C.W.; Eddleman, J.; Hammer, J.H.

1986-01-01

The authors discuss a fast-opening switch concept based on magnetically confined plasma rings, PROS (for Plasma Ring Opening Switch). In PROS, the plasma ring, confined by Bθ /sub and B/poloidal /sub fields of a compact torus, provide a low mass, localized conduction path between coaxial electrodes. To operate the switch, driver current is passed across the electrodes through the ring, storing inductive energy in external inductance and between the electrodes on the driver side of the ring. The ring is accelerated away from the driver by the field of the driver current and passes over a load gap transferring the current to the load. The authors distinguish two configurations in PROS, straight PROS where the electrodes are coaxial cylinders, and cone PROS with conical electrodes. In straight PROS ring acceleration takes place during the inductive store period as in foil switches, but with the localized ring providing the current path. Increased performance is predicted for the cone PROS (see figure) which employs compression of the ring in the cone during the inductive store period. Here, the B/θ /sub field of the driver forces the ring towards the apex of the cone but the force is in near balance with the opposing component of the radial equilibrium force of the ring along the cone. As a result, the ring undergoes a slow, quasistatic compression limited only by resistive decay of the ring field. Slow compression allows inductive storage with low-power drivers (homopoloar, magneto cumulative generators, high C-low V capacitor banks, etc.). Near the apex of the cone, near peak compression, the ring is allowed to enter a straight coaxial section where, because of low-mass, it rapidly accelerates to high velocity and crosses the load gap

Iron from Zealandic bog iron ore -

DEFF Research Database (Denmark)

Lyngstrøm, Henriette Syrach

2011-01-01

og geologiske materiale, metallurgiske analyser og eksperimentel arkæologiske forsøg - konturerne af en jernproduktion med udgangspunkt i den sjællandske myremalm. The frequent application by archaeologists of Werner Christensen’s distribution map for the occurrence of bog iron ore in Denmark (1966...... are sketched of iron production based on bog iron ore from Zealand....

Response to parenteral iron therapy distinguish unexplained refractory iron deficiency anemia from iron-refractory iron deficiency anemia.

Science.gov (United States)

Akin, M; Sarbay, H; Guler, S; Balci, Y I; Polat, A

2016-04-01

We evaluated that response to parenteral iron therapy could be helpful in distinguishing the types of iron deficiency anemia. This study analyzed responses to IV iron sucrose therapy of 15 children with unexplained refractory iron deficiency anemia (URIDA). We compared the results at diagnosis, 6 weeks and 6 months after the therapy. Results were compared with responses of 11 patients' results with iron-refractory iron deficiency anemia (IRIDA) from our previous study. Six weeks after the start of treatment, ferritin, MCV, MCH and Hb values were in normal range in 10 patients. The increase in Hb, MCH, MCV, and ferritin values ranged 2.6-3.5 g/dL, 1.7-4.2 pg, 2-9 fL, and 13-25 ng/mL, respectively. In five patients, Hb, MCH, and MCV mean (range) values [11.2 g/dL (11-12.2), 24.5 pg (24-25.6), and 67 fL (65-70)] were nearly normal but ferritin mean (range) values [9.8 ng/mL (8-11)] were below normal. Six weeks after the start of treatment, Hb, MCH, MCV and ferritin values of patients with IRIDA were increased. The increase in Hb, MCH, MCV, and ferritin values ranged 0.8-2.7 g/dL, 1.7-4.2 pg, 2-9 fL, and 13-25 ng/mL, respectively. IRIDA is only partially responsive to parenteral iron supplementation. In conclusion, this study demonstrated that the response to intravenous iron therapy for the URIDA cases improved blood parameters more effectively than hereditary IRIDA. Response to parenteral iron therapy would be helpful to distinguish unexplained refractory IDA from hereditary IRIDA for clinicians who do not have access to hepcidin or TMPRS6 mutation analysis. © 2016 John Wiley & Sons Ltd.

Fusion Rings for Quantum Groups

DEFF Research Database (Denmark)

Andersen, Henning Haahr; Stroppel, Catharina

2014-01-01

We study the fusion rings of tilting modules for a quantum group at a root of unity modulo the tensor ideal of negligible tilting modules. We identify them in type A with the combinatorial rings from Korff, C., Stroppel, C.: The sl(ˆn)k-WZNW fusion ring: a combinato-rial construction...... and a realisation as quotient of quantum cohomology. Adv. Math. 225(1), 200–268, (2010) and give a similar description of the sp2n-fusion ring in terms of non-commutative symmetric functions. Moreover we give a presentation of all fusion rings in classical types as quotients of polynomial rings. Finally we also...... compute the fusion rings for type G2....

The LSU Electron Storage Ring, the first commercially-built storage ring

International Nuclear Information System (INIS)

Sah, R.

1990-01-01

The Brobeck Division of Maxwell Laboratories, Inc., is building the first industrially-produced storage ring. It will be located at Louisiana State University (LSU) at the Center for Advanced Microstructures and Devices (CAMD) in Baton Rouge. The purpose of this electron storage ring is to provide intense beams of x-rays to advance the state-of-the-art in lithography and to permit research in a broad area. This facility consists of a 1.2 GeV, 400 mA electron storage ring with a 200 MeV linac injector. The magnet lattice is a Chasman-Green design (double-bend achromat), and the ring circumference is 55.2 meters. There are four 3.0 meter, dispersion-free straight sections, one for injection, one for the 500 MHz RF cavity, and two for possible future insertion devices. The storge ring construction project is in the detailed-design stage, and many systems are in the initial stages of fabrication. 4 figs., 1 tab

Fusion rings and fusion ideals

DEFF Research Database (Denmark)

Andersen, Troels Bak

by the so-called fusion ideals. The fusion rings of Wess-Zumino-Witten models have been widely studied and are well understood in terms of precise combinatorial descriptions and explicit generating sets of the fusion ideals. They also appear in another, more general, setting via tilting modules for quantum......This dissertation investigates fusion rings, which are Grothendieck groups of rigid, monoidal, semisimple, abelian categories. Special interest is in rational fusion rings, i.e., fusion rings which admit a finite basis, for as commutative rings they may be presented as quotients of polynomial rings...

Looking Back at Doctoral Education in South Africa

Science.gov (United States)

Herman, Chaya

2017-01-01

This article provides a quantitative picture of doctoral education in South Africa up to 2010, from the time the first doctorate was awarded in 1899. It identifies the different institutional profiles and emphases of doctoral graduation in South African universities at various periods of time in the context of economic, political and social…

Iron isomaltoside 1000: a new intravenous iron for treating iron deficiency in chronic kidney disease

DEFF Research Database (Denmark)

Wikström, Björn; Bhandari, Sunil; Barany, Peter

2011-01-01

Patients with chronic kidney disease (CKD) often suffer from iron deficiency anemia necessitating treatment with intravenous iron. This study was designed to assess the safety of iron isomaltoside 1000 (Monofer) in CKD patients. The secondary objective was to assess its effect on iron deficiency...... anemia....

Quantitative Preparation in Doctoral Education Programs: A Mixed-Methods Study of Doctoral Student Perspectives on their Quantitative Training

Directory of Open Access Journals (Sweden)

Sarah L Ferguson

2017-07-01

Full Text Available Aim/Purpose: The purpose of the current study is to explore student perceptions of their own doctoral-level education and quantitative proficiency. Background: The challenges of preparing doctoral students in education have been discussed in the literature, but largely from the perspective of university faculty and program administrators. The current study directly explores the student voice on this issue. Methodology: Utilizing a sequential explanatory mixed-methods research design, the present study seeks to better understand doctoral-level education students’ perceptions of their quantitative methods training at a large public university in the southwestern United States. Findings: Results from both phases present the need for more application and consistency in doctoral-level quantitative courses. Additionally, there was a consistent theme of internal motivation in the responses, suggesting students perceive their quantitative training to be valuable beyond their personal interest in the topic. Recommendations for Practitioners: Quantitative methods instructors should emphasize practice in their quantitative courses and consider providing additional support for students through the inclusion of lab sections, tutoring, and/or differentiation. Pre-testing statistical ability at the start of a course is also suggested to better meet student needs. Impact on Society: The ultimate goal of quantitative methods in doctoral education is to produce high-quality educational researchers who are prepared to apply their knowledge to problems and research in education. Results of the present study can inform faculty and administrator decisions in doctoral education to best support this goal. Future Research: Using the student perspectives presented in the present study, future researchers should continue to explore effective instructional strategies and curriculum design within education doctoral programs. The inclusion of student voice can strengthen

The Effect Of Local Coal And Smelting Sponge Iron On Iron Content Of Pig Iron

Science.gov (United States)

Oediyani, Soesaptri; Juwita Sari, Pramita; Hadi P, Djoko

2018-03-01

The new regulation on mineral resources was announced by Ministry of Energy and Mineral resources (ESDM) of Indonesia at 2014 which it called Permen ESDM No 1/2014. Therefore, this research was conducted to add the value of local iron ores by using smelting technology. The objective of the research is to produce pig iron that meet the requirement of the new regulation of mineral resources such as 90% Fe. First, iron ores and coal mixed together with lime as a flux, then smelted in a Electric Arc Furnace at 1800°C. The process variables are (1; 1.25; 1.5; 1.75; 2.0) and the composition of coal (0.8%, 1.6%, 3.0%). The type of coal that used in this research was bituminous coal from Kalimantan and also the iron ores from Kalimantan. The products of the smelting technology are Pig iron and slag. Both pig iron and slag then analyzed by SEM-EDS to measure the iron content. The result shows that the maximum iron content on pig iron is about 95.04% meanwhile the minimum iron content on slag is about 3.66%. This result achieved at 1.6% coal and 2.0.

Some hadron calorimeter properties relevant to storage rings

International Nuclear Information System (INIS)

Corden, M.J.; Dowell, J.D.; Edwards, M.; Ellis, N.; Garvey, J.; Grant, D.; Homer, R.J.; Kenyon, I.R.; McMahon, T.; Schanz, G.; Sumorok, K.C.T.O.; Watkins, P.M.; Wilson, J.A.; Eisenhandler, E.; Gibson, W.R.; Kalmus, P.I.P.; Thompson, G.; Arnison, G.; Astbury, A.; Grayer, G.; Haynes, W.J.; Hill, D.; Nandi, A.K.; Roberts, C.; Shah, T.P.

1982-01-01

At wide angles in a storage ring environment, a substantial part of the energy seen by a hadron calorimeter can be in the form of very low momentum particles such as jet fragments or resonance cascade decay products. Data are presented on the deviations from Gaussian resolution and linear response for such low momentum particles. The differing responses to incident e - , μ - , π +- , K +- , p and anti p at momenta below 10 GeV/c are also compared. In addition, the authors discuss the significance of angle effects for a 4π calorimeter, and the problems of combining data from calorimeters with different physical characteristics. Experimental data are presented on the difference in hadron response between a fine grain (electromagnetic) lead calorimeter and a coarser (hadron) iron calorimeter, and on the dependence of the response on the energy sharing between the two calorimeters. (Auth.)

Stress in doctors and dentists who teach.

Science.gov (United States)

Rutter, Harry; Herzberg, Joe; Paice, Elisabeth

2002-06-01

To explore the relationship between a teaching role and stress in doctors and dentists who teach. Medline, PubMed, BIDS database for social sciences literature, and the ERIC database for educational literature were searched using the key words 'stress' or 'burnout' with the terms doctor, physician, dentist, teacher, lecturer, academic staff, and university staff. Other books and journals known to the authors were also used. Many studies have shown high levels of stress in doctors, dentists, teachers, and lecturers. A large number of factors are implicated, including low autonomy, work overload, and lack of congruence between power and responsibility. Doctors and dentists who take on a teaching role in addition to their clinical role may increase their levels of stress, but there is also evidence that this dual role may reduce job-related stress. Working as a doctor or dentist may entail higher levels of stress than are experienced by the general population. In some situations adding in the role of teacher reduces this stress, but more research is needed to explain this finding.

Evaluation of ring impedance of the Photon Factory storage ring

International Nuclear Information System (INIS)

Kiuchi, T.; Izawa, M.; Tokumoto, S.; Hori, Y.; Sakanaka, S.; Kobayashi, M.; Kobayakawa, H.

1992-05-01

The loss parameters of the ducts in the Photon Factory (PF) storage ring were evaluated using the wire method and the code TBCI. Both the measurement and the calculation were done for a different bunch length (σ) ranging from 23 to 80 ps. The PF ring impedance was estimated to be |Z/n|=3.2 Ω using the broadband impedance model. The major contribution to the impedance comes from the bellows and the gate valve sections. Improvements of these components will lower the ring impedance by half. (author)

Epilepsy - what to ask your doctor - child

Science.gov (United States)

What to ask your doctor about epilepsy - child; Seizures - what to ask your doctor - child ... should I discuss with my child's teachers about epilepsy? Will my child need to take medicines during ...

The Plight of the Woman Doctoral Student

Science.gov (United States)

Holmstrom, Engin Inel; Holmstrom, Robert W.

1974-01-01

This study investigated factors underlying discrimination against woman doctoral students. Analyses revealed that faculty attitudes and behavior toward woman doctoral students contributed significantly to their emotional stresses and self-doubts. (Author/NE)

Surviving the Doctoral Years

Directory of Open Access Journals (Sweden)

Scott P. Kerlin

1995-11-01

Full Text Available This article probes the implications of neo-conservative public education policies for the future of the academic profession through a detailed examination of critical issues shaping contemporary doctoral education in U.S. and Canadian universities. Institutional and social factors such as financial retrenchment, declining support for affirmative action, downward economic mobility, a weak academic labor market for tenure-track faculty, professional ethics in graduate education, and backlash against women's progress form the backdrop for analysis of the author's survey of current doctoral students' opinions about funding, support, the job market, and quality of learning experiences.

Iron biomineralization by anaerobic neutrophilic iron-oxidizing bacteria

DEFF Research Database (Denmark)

Miot, Jennyfer; Benzerara, Karim; Morin, Guillaume

2009-01-01

Minerals formed by bio-oxidation of ferrous iron (Fe(II)) at neutral pH, their association with bacterial ultrastructures as well as their impact on the metabolism of iron-oxidizing bacteria remain poorly understood. Here, we investigated iron biomineralization by the anaerobic nitrate-dependent ......Minerals formed by bio-oxidation of ferrous iron (Fe(II)) at neutral pH, their association with bacterial ultrastructures as well as their impact on the metabolism of iron-oxidizing bacteria remain poorly understood. Here, we investigated iron biomineralization by the anaerobic nitrate...... precipitation in the periplasm (in a few tens of minutes), followed by the formation of surface-bound globules. Moreover, we frequently observed an asymmetric mineral thickening at the cell poles. In parallel, the evolution of iron oxidation was quantified by STXM: iron both contained in the bacteria...... and in the extracellular precipitates reached complete oxidation within 6 days. While a progressive oxidation of Fe in the bacteria and in the medium could be observed, spatial redox (oxido-reduction state) heterogeneities were detected at the cell poles and in the extracellular precipitates after 1 day. All...

46 CFR 56.60-10 - Cast iron and malleable iron.

Science.gov (United States)

2010-10-01

... 46 Shipping 2 2010-10-01 2010-10-01 false Cast iron and malleable iron. 56.60-10 Section 56.60-10... APPURTENANCES Materials § 56.60-10 Cast iron and malleable iron. (a) The low ductility of cast iron and malleable iron should be recognized and the use of these metals where shock loading may occur should be...

Tree Rings: Timekeepers of the Past.

Science.gov (United States)

Phipps, R. L.; McGowan, J.

One of a series of general interest publications on science issues, this booklet describes the uses of tree rings in historical and biological recordkeeping. Separate sections cover the following topics: dating of tree rings, dating with tree rings, tree ring formation, tree ring identification, sample collections, tree ring cross dating, tree…

Attracting and retaining doctors in rural Nepal.

Science.gov (United States)

Shankar, P R

2010-01-01

In Nepal, a number of private sector medical schools have opened recently; although sufficient numbers of doctors are graduating there continues to be a doctor shortage in rural areas. This article analysed the rural doctor shortage in Nepal and reviewed the international literature for strategies that may be suitable for use in Nepal. Original research articles, reviews, magazine articles and project reports dealing with Nepal and other developing countries during the period 1995 to 2010 were sourced via Google, Google Scholar and Pubmed. Full text access was obtained via WHO's HINARI database. The health workforce in Nepal is unevenly distributed resulting in doctor shortages in rural areas. The recent introduction of mandatory rural service for scholarship students was aimed to reduce the loss of medical graduates to developed nations. High tuition fees in private medical schools and low Government wages prevent recent graduates from taking up rural positions, and those who do face many challenges. Potential corrective strategies include community-based medical education, selecting rural-background medical students, and providing a partial or complete tuition fee waiver for medical students who commit to rural service. Traditional healers and paramedical staff can also be trained for and authorized to provide rural health care. A range of strategies developed elsewhere could be used in Nepal, especially community-oriented medical education that involves rural doctors in training medical students. The reimbursement of tuition fees, assistance with relocation, and provision of opportunities for academic and professional advancement for rural doctors should also be considered. Government investment in improving working conditions in rural Nepal would assist rural communities to attract and retain doctors.

Magnet design for a low-emittance storage ring

Science.gov (United States)

Johansson, Martin; Anderberg, Bengt; Lindgren, Lars-Johan

2014-01-01

The MAX IV 3 GeV storage ring, currently under construction, pursues the goal of low electron beam emittance by using a multi-bend achromat magnet lattice, which is realised by having several consecutive magnet elements precision-machined out of a common solid iron block, 2.3–3.4 m long. With this magnet design solution, instead of having 1320 individual magnets, the MAX IV 3 GeV storage ring is built up using 140 integrated ‘magnet block’ units, containing all these magnet elements. Major features of this magnet block design are compactness, vibration stability and that the alignment of magnet elements within each unit is given by the mechanical accuracy of the CNC machining rather than individual field measurement and adjustment. This article presents practical engineering details of implementing this magnet design solution, and mechanical + magnetic field measurement results from the magnet production series. At the time of writing (spring 2014), the production series, which is totally outsourced to industry, is roughly half way through, with mechanical/magnetic QA conforming to specifications. It is the conclusion of the authors that the MAX IV magnet block concept, which has sometimes been described as new or innovative, is from a manufacturing point of view simply a collection of known mature production methods and measurement procedures, which can be executed at fixed cost with a low level of risk. PMID:25177980

The Web planet: How the changing Internet divided Doctor Who fan fiction writers

Directory of Open Access Journals (Sweden)

Leora Hadas

2009-11-01

Full Text Available This paper analyzes the debate that arose in online Doctor Who fandom surrounding the switch to moderated submissions for "A Teaspoon and an Open Mind," the fandom's main fan fiction archive. As has been the case with many classic texts of science fiction and fantasy, from The Lord of the Rings on, the new adaptation of the cult series Doctor Who was the cause of much tension and conflict within the fandom. It has opened up the franchise to a vast new audience unschooled in the fandom's ways or the ways of fandom at large, and the change in archive policy served as an arena where many of these tensions came to a head. An in-depth analysis of this debate leads to the argument that the cultural logics of fandom and of participatory culture might be more separate than they initially appear. Some fans wholly embrace the ideals of Web 2.0 and argue for the archive as a nonhierarchical, communal space where all content is equal regardless of what standards it might not meet. Yet while their rhetoric resembles the ideas of academia about the potential of fandom as an educational space, other, more veteran fans reject academia, instead using the discourse of private enterprise and property rights, more commonly associated with the producers of texts than with their fans and poachers, to argue for the rights of site moderators to regulate content.

The Iron Cage and the Gaze: Interpreting Medical Control in the English Health System

Directory of Open Access Journals (Sweden)

Mark Exworthy

2015-05-01

Full Text Available This paper seeks to determine the value of theoretical ideal-types of medical control. Whilst ideal types (such as the iron cage and gaze need revision in their application to medical settings, they remain useful in describing and explaining patterns of control and autonomy in the medical profession. The apparent transition from the cage to the gaze has often been over-stated since both types are found in many contemporary health reforms. Indeed, forms of neo-bureaucracy have emerged alongside surveillance of the gaze. These types are contextualised and elaborated in terms of two empirical examples: the management of medical performance and financial incentives for senior hospital doctors in England. Findings point towards the reformulation of medical control, an on-going re-stratification of the medical profession, and the internalisation of managerial discourses. The cumulative effect involves the medical profession’s ability to re-cast and enhance its position (vis-à-vis managerial interests.Keywords: medical profession, medical control, iron cage, gaze

Concussion - what to ask your doctor - child

Science.gov (United States)

What to ask your doctor about concussion - child; Mild brain injury - what to ask your doctor - child ... What type of symptoms or problems will my child have? Will my child have problems thinking or ...

[The virtuous doctor in cinema: the final examination].

Science.gov (United States)

Figueroa, Gustavo

2014-10-01

The virtuous doctor has subscribed an oath and by subscribing to this solemn promise, he is committed to live in accordance with the purposes, obligations and virtues established in the medical profession. Cinematic art has shown only a superficial interest in complex aspects of medical profession. An exception is Ingmar Bergman's film "Wild Strawberries", where Professor Isak Borg, a widowed 76-year-old physician, is to be awarded the Doctor Jubilaris degree, 50 years after he received his doctorate at Lund University. During the trip, Isak is forced by a nightmare to reevaluate his professional life as not being a virtuous doctor.

Skills and Competences of a Doctor of Engineering

Directory of Open Access Journals (Sweden)

Michael H. W. Hoffmann

2011-12-01

Full Text Available Not only in Europe but also on other continents, it is felt that a reform of the doctoral phase in tertiary education is necessary. To make this reform a success, it is necessary to first define the skills and competences of a doctor in general and of a doctor of engineering in particular to dispose of measurable criteria for the outcomes of the reform. These criteria are intended to foster not only an academic career but also careers in industry and administration, i.e. to support the careers of future chief executives. It is also presented how these skills and competences are seen by industrial companies as well as by the young Doctors of Engineering. Finally, it is discussed how existing methods might be reformed to further improve the doctoral phase at and in cooperation with universities.

Quantification of body iron and iron absorption in the REDS-II Donor Iron Status Evaluation (RISE) study.

Science.gov (United States)

Kiss, Joseph E; Birch, Rebecca J; Steele, Whitney R; Wright, David J; Cable, Ritchard G

2017-07-01

Repeated blood donation alters the iron balance of blood donors. We quantified these effects by analyzing changes in body iron as well as calculating iron absorbed per day for donors enrolled in a prospective study. For 1308 donors who completed a final study visit, we calculated total body iron at the enrollment and final visits and the change in total body iron over the course of the study. Taking into account iron lost from blood donations during the study and obligate losses, we also calculated the average amount of iron absorbed per day. First-time/reactivated donors at enrollment had iron stores comparable to previous general population estimates. Repeat donors had greater donation intensity and greater mean iron losses than first-time/reactivated donors, yet they had little change in total body iron over the study period, whereas first-time/reactivated donors had an average 35% drop. There was higher estimated iron absorption in the repeat donors (men: 4.49 mg/day [95% confidence interval [CI], 4.41-4.58 mg/day]; women: 3.75 mg/day [95% CI, 3.67-3.84 mg/day]) compared with estimated iron absorption in first-time/reactivated donors (men: 2.89 mg/day [95% CI, 2.75-3.04 mg/day]; women: 2.76 mg/day [95% CI, 2.64-2.87 mg/day]). The threshold for negative estimated iron stores (below "0" mg/kg stores) was correlated with the development of anemia at a plasma ferritin value of 10 ng/mL. These analyses provide quantitative data on changes in estimated total body iron for a broad spectrum of blood donors. In contrast to using ferritin alone, this model allows assessment of the iron content of red blood cells and the degree of both iron surplus and depletion over time. © 2017 AABB.

Newborn jaundice - what to ask your doctor

Science.gov (United States)

Jaundice - what to ask your doctor; What to ask your doctor about newborn jaundice ... What causes jaundice in a newborn child? How common is newborn jaundice? Will the jaundice harm my child? What are the ...

Some Aspects of Ring Theory

CERN Document Server

Herstein, IN

2011-01-01

S. Amitsur: Associative rings with identities.- I.N. Herstein: Topics in ring theory.- N. Jacobson: Representation theory of Jordan algebras.- I. Kaplansky: The theory of homological dimension.- D. Buchsbaum: Complexes in local ring theory.- P.H. Cohn: Two topics in ring theory.- A.W. Goldie: Non-commutative localisation.

Doctors' health: obstacles and enablers to returning to work.

Science.gov (United States)

Cohen, D; Rhydderch, M; Reading, P; Williams, S

2015-08-01

For doctors returning to work after absence due to ill-health or performance concerns, the obstacles can seem insurmountable. Doctors' perspectives of these obstacles have been investigated. To support them more effectively, the perspectives of organizations that interact with such doctors should also be considered. To explore the obstacles and enablers to doctors' return to work after long-term absence from the perspective of key organizations involved in assessment and support. We identified organizations operating in the field of doctors' health, well-being and performance. We conducted semi-structured, 30-45 min telephone interviews with representatives of the organizations, exploring problems that they had encountered that were experienced by doctors with health or performance concerns returning to work after absence of a month or longer. We analysed our field notes using theoretical analysis. We conducted 11 telephone interviews. Data analysis identified four key themes of obstacles and enablers to returning to work: 'communication', 'return to work', 'finance and funding' and 'relationships and engagement'. Sub-themes relating to the organization and the individual also emerged. Organizations responsible for supporting doctors back to work reported poor communication as a significant obstacle to doctors returning to work after illness. They also reported differences between specialities, employing organizations, occupational health departments and human resources in terms of knowledge and expertise in supporting doctors with complex issues. Clear communication channels, care pathways and support processes, such as workplace advocates, were perceived as strong enablers to return to work for doctors after long-term absence. © The Author 2015. Published by Oxford University Press on behalf of the Society of Occupational Medicine. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

The quality of doctoral nursing education in South Africa

Directory of Open Access Journals (Sweden)

Siedine K. Coetzee

2015-07-01

Full Text Available Background: The number of doctoral programmes in nursing has multiplied rapidly throughout the world. This has led to widespread concern about nursing doctoral education, specifically with regard to the quality of curricula and faculty, as well as to the availability of appropriate institutional resources. In South Africa, no study of these issues has been conducted at a national level. Objective: To explore and describe the quality of nursing doctoral education in South Africa from the perspectives of deans, faculty, doctoral graduates and students. Method: A cross-sectional survey design was used. All deans (N = 15; n = 12, faculty (N = 50; n = 26, doctoral graduates (N = 43; n = 26 and students (N = 106; n = 63 at South African nursing schools that offer a nursing doctoral programme (N = 16; n = 15 were invited to participate. Data were collected by means of structured email-mediated Quality of Nursing Doctoral Education surveys. Results: Overall, the graduate participants scored their programme quality most positively of all the groups and faculty scored it most negatively. All of the groups rated the quality of their doctoral programmes as good, but certain problems related to the quality of resources, students and faculty were identified. Conclusion: These evaluations, by the people directly involved in the programmes, demonstrated significant differences amongst the groups and thus provide valuable baseline data for building strategies to improve the quality of doctoral nursing education in South Africa.

Patient‑doctor relationship: The practice orientation of doctors in Kano

African Journals Online (AJOL)

2013-08-19

Aug 19, 2013 ... relationship borders mainly on patients' satisfaction[12‑16] from either the .... Female. 47 (22.0). Marital status. Single. 87 (40.7). Married. 127 (59.3) ... doctors' place of work was only statistically significant in the “sharing” ...

Improving the Accuracy of Laplacian Estimation with Novel Variable Inter-Ring Distances Concentric Ring Electrodes

Directory of Open Access Journals (Sweden)

Oleksandr Makeyev

2016-06-01

Full Text Available Noninvasive concentric ring electrodes are a promising alternative to conventional disc electrodes. Currently, the superiority of tripolar concentric ring electrodes over disc electrodes, in particular, in accuracy of Laplacian estimation, has been demonstrated in a range of applications. In our recent work, we have shown that accuracy of Laplacian estimation can be improved with multipolar concentric ring electrodes using a general approach to estimation of the Laplacian for an (n + 1-polar electrode with n rings using the (4n + 1-point method for n ≥ 2. This paper takes the next step toward further improving the Laplacian estimate by proposing novel variable inter-ring distances concentric ring electrodes. Derived using a modified (4n + 1-point method, linearly increasing and decreasing inter-ring distances tripolar (n = 2 and quadripolar (n = 3 electrode configurations are compared to their constant inter-ring distances counterparts. Finite element method modeling and analytic results are consistent and suggest that increasing inter-ring distances electrode configurations may decrease the truncation error resulting in more accurate Laplacian estimates compared to respective constant inter-ring distances configurations. For currently used tripolar electrode configuration, the truncation error may be decreased more than two-fold, while for the quadripolar configuration more than a six-fold decrease is expected.

Improving the Accuracy of Laplacian Estimation with Novel Variable Inter-Ring Distances Concentric Ring Electrodes

Science.gov (United States)

Makeyev, Oleksandr; Besio, Walter G.

2016-01-01

Noninvasive concentric ring electrodes are a promising alternative to conventional disc electrodes. Currently, the superiority of tripolar concentric ring electrodes over disc electrodes, in particular, in accuracy of Laplacian estimation, has been demonstrated in a range of applications. In our recent work, we have shown that accuracy of Laplacian estimation can be improved with multipolar concentric ring electrodes using a general approach to estimation of the Laplacian for an (n + 1)-polar electrode with n rings using the (4n + 1)-point method for n ≥ 2. This paper takes the next step toward further improving the Laplacian estimate by proposing novel variable inter-ring distances concentric ring electrodes. Derived using a modified (4n + 1)-point method, linearly increasing and decreasing inter-ring distances tripolar (n = 2) and quadripolar (n = 3) electrode configurations are compared to their constant inter-ring distances counterparts. Finite element method modeling and analytic results are consistent and suggest that increasing inter-ring distances electrode configurations may decrease the truncation error resulting in more accurate Laplacian estimates compared to respective constant inter-ring distances configurations. For currently used tripolar electrode configuration, the truncation error may be decreased more than two-fold, while for the quadripolar configuration more than a six-fold decrease is expected. PMID:27294933

Is networking different with doctors working part-time? Differences in social networks of part-time and full-time doctors.

Science.gov (United States)

Heiligers, Phil J M; de Jong, Judith D; Groenewegen, Peter P; Hingstman, Lammert; Völker, Beate; Spreeuwenberg, Peter

2008-10-04

Part-time working is a growing phenomenon in medicine, which is expected to influence informal networks at work differently compared to full-time working. The opportunity to meet and build up social capital at work has offered a basis for theoretical arguments. Twenty-eight teams of medical specialists in the Netherlands, including 226 individuals participated in this study. Interviews with team representatives and individual questionnaires were used. Data were gathered on three types of networks: relationships of consulting, communication and trust. For analyses, network and multilevel applications were used. Differences between individual doctors and between teams were both analysed, taking the dependency structure of the data into account, because networks of individual doctors are not independent. Teams were divided into teams with and without doctors working part-time. Contrary to expectations we found no impact of part-time working on the size of personal networks, neither at the individual nor at the team level. The same was found regarding efficient reachability. Whereas we expected part-time doctors to choose their relations as efficiently as possible, we even found the opposite in intended relationships of trust, implying that efficiency in reaching each other was higher for full-time doctors. But we found as expected that in mixed teams with part-time doctors the frequency of regular communication was less compared to full-time teams. Furthermore, as expected the strength of the intended relationships of trust of part-time and full-time doctors was equally high. From these findings we can conclude that part-time doctors are not aiming at efficiency by limiting the size of networks or by efficient reachability, because they want to contact their colleagues directly in order to prevent from communication errors. On the other hand, together with the growth of teams, we found this strategy, focussed on reaching all colleagues, was diminishing. And our data

Radar imaging of Saturn's rings

Science.gov (United States)

Nicholson, Philip D.; French, Richard G.; Campbell, Donald B.; Margot, Jean-Luc; Nolan, Michael C.; Black, Gregory J.; Salo, Heikki J.

2005-09-01

We present delay-Doppler images of Saturn's rings based on radar observations made at Arecibo Observatory between 1999 and 2003, at a wavelength of 12.6 cm and at ring opening angles of 20.1°⩽|B|⩽26.7°. The average radar cross-section of the A ring is ˜77% relative to that of the B ring, while a stringent upper limit of 3% is placed on the cross-section of the C ring and 9% on that of the Cassini Division. These results are consistent with those obtained by Ostro et al. [1982, Icarus 49, 367-381] from radar observations at |B|=21.4°, but provide higher resolution maps of the rings' reflectivity profile. The average cross-section of the A and B rings, normalized by their projected unblocked area, is found to have decreased from 1.25±0.31 to 0.74±0.19 as the rings have opened up, while the circular polarization ratio has increased from 0.64±0.06 to 0.77±0.06. The steep decrease in cross-section is at variance with previous radar measurements [Ostro et al., 1980, Icarus 41, 381-388], and neither this nor the polarization variations are easily understood within the framework of either classical, many-particle-thick or monolayer ring models. One possible explanation involves vertical size segregation in the rings, whereby observations at larger elevation angles which see deeper into the rings preferentially see the larger particles concentrated near the rings' mid-plane. These larger particles may be less reflective and/or rougher and thus more depolarizing than the smaller ones. Images from all four years show a strong m=2 azimuthal asymmetry in the reflectivity of the A ring, with an amplitude of ±20% and minima at longitudes of 67±4° and 247±4° from the sub-Earth point. We attribute the asymmetry to the presence of gravitational wakes in the A ring as invoked by Colombo et al. [1976, Nature 264, 344-345] to explain the similar asymmetry long seen at optical wavelengths. A simple radiative transfer model suggests that the enhancement of the azimuthal

Substituent effects on geometric and electronic properties of iron tetraphenylporphyrin: a DFT investigation.

Science.gov (United States)

Wei, Lu; She, Yuanbin; Yu, Yanmin; Yao, Xiaoqian; Zhang, Suojiang

2012-06-01

To investigate the effects of the substituents, substituent positions and axial chloride ligand on the geometric and electronic properties of the iron tetraphenylporphyrin (FeTPP), a series of the substituented iron tetraphenylporphyrins and their chlorides, FeT(o/p-R)PP and FeT(o/p-R)PPCl (R = -H, -Cl, -NO(2), -OH, -OCH(3)), were systematically calculated without any symmetry constraint by using DFT method. For geometric structure, the substituent position and axial Cl ligand change the configuration of the iron porphyrin obviously. The ortho-substituents prefer making the phenyls perpendicular to the porphyrin ring; the axial chloride draws the central Fe ion ~0.500 Å out of the porphyrin plane toward the ligand. With regard to electronic properties, it is found that E(LUMO) could be related to the catalytic activity. The electron-withdrawing group always lowers the energies of both frontier orbitals, while the electron-donating one heightens them simultaneously, but they affect the E(HOMO) and E(LUMO) in the same sequence, -NO(2) < -Cl < -H < -OH < -OCH(3). The substituent effects on the central Fe ion were explored by calculating NBO charge distribution, spin density and natural electron configuration.

49 CFR 192.373 - Service lines: Cast iron and ductile iron.

Science.gov (United States)

2010-10-01

... 49 Transportation 3 2010-10-01 2010-10-01 false Service lines: Cast iron and ductile iron. 192.373... Regulators, and Service Lines § 192.373 Service lines: Cast iron and ductile iron. (a) Cast or ductile iron... cast iron pipe or ductile iron pipe is installed for use as a service line, the part of the service...

Study of improvement in 1st ring`s gas-seal; Top ring no gas seal seino kojo no kento

Energy Technology Data Exchange (ETDEWEB)

Ando, H; Tateishi, Y; Fujimura, K; Hitosugi, H [Nippon Piston Ring Co. Ltd., Tokyo (Japan)

1997-10-01

The authors studied the effect of an angle of 1st ring twist on the amount of blow-by concerning higher speed/higher output engines for motorcycles. As a result, the authors found the twist made the ring restrained in a ring groove of piston , and confirmed its suitable range for blow-by. By means of the developed optimization method, the authors have achieved significant reduction in blow-by at high engine speed. 1 ref., 9 figs., 2 tabs.

Critical current measurement in superconducting rings using an automatic inductive technique

International Nuclear Information System (INIS)

Gonzalez-Jorge, H.; Linares, B.; Quelle, I.; Carballo, E.; Romani, L.; Domarco, G.

2007-01-01

A measurement technique was developed to identify the critical current of superconducting rings. It is based on the detection of the voltage on a secondary coil when the current induced in the superconductor by a primary one go beyond to the critical value. The technique uses a DC power supply to control the AC current circulating by the primary circuit. Such circuit mainly consists on an AC power supply which gives a constant AC voltage, a primary inducting coil and a control coil with iron core. The AC current circulating by this circuit is modified with the change in the impedance of the control coil due to the fact of the DC current supplied by the power supply in parallel with it

Critical and Creative Thinking Nexus: Learning Experiences of Doctoral Students

Science.gov (United States)

Brodin, Eva M.

2016-01-01

Critical and creative thinking constitute important learning outcomes at doctoral level across the world. While the literature on doctoral education illuminates this matter through the lens of experienced senior researchers, the doctoral students' own perspective is missing. Based upon interviews with 14 doctoral students from four disciplines at…

Viscosity of ring polymer melts

KAUST Repository

Pasquino, Rossana

2013-10-15

We have measured the linear rheology of critically purified ring polyisoprenes, polystyrenes, and polyethyleneoxides of different molar masses. The ratio of the zero-shear viscosities of linear polymer melts η0,linear to their ring counterparts η0,ring at isofrictional conditions is discussed as a function of the number of entanglements Z. In the unentangled regime η0,linear/η 0,ring is virtually constant, consistent with the earlier data, atomistic simulations, and the theoretical expectation η0,linear/ η0,ring = 2. In the entanglement regime, the Z-dependence of ring viscosity is much weaker than that of linear polymers, in qualitative agreement with predictions from scaling theory and simulations. The power-law extracted from the available experimental data in the rather limited range 1 < Z < 20, η0,linear/η0,ring ∼ Z 1.2±0.3, is weaker than the scaling prediction (η0,linear/η0,ring ∼ Z 1.6±0.3) and the simulations (η0,linear/ η0,ring ∼ Z2.0±0.3). Nevertheless, the present collection of state-of-the-art experimental data unambiguously demonstrates that rings exhibit a universal trend clearly departing from that of their linear counterparts, and hence it represents a major step toward resolving a 30-year-old problem. © 2013 American Chemical Society.

Viscosity of ring polymer melts

KAUST Repository

Pasquino, Rossana; Vasilakopoulos, Thodoris C.; Jeong, Youncheol; Lee, Hyojoon; Rogers, Simon A.; Sakellariou, Georgios; Allgaier, Jü rgen B.; Takano, Atsushi; Brá s, Ana Rita E; Chang, Taihyun; Gooß en, Sebastian; Pyckhout-Hintzen, Wim; Wischnewski, Andreas; Hadjichristidis, Nikolaos; Richter, Dieter R.; Rubinstein, Michael H.; Vlassopoulos, Dimitris

2013-01-01

We have measured the linear rheology of critically purified ring polyisoprenes, polystyrenes, and polyethyleneoxides of different molar masses. The ratio of the zero-shear viscosities of linear polymer melts η0,linear to their ring counterparts η0,ring at isofrictional conditions is discussed as a function of the number of entanglements Z. In the unentangled regime η0,linear/η 0,ring is virtually constant, consistent with the earlier data, atomistic simulations, and the theoretical expectation η0,linear/ η0,ring = 2. In the entanglement regime, the Z-dependence of ring viscosity is much weaker than that of linear polymers, in qualitative agreement with predictions from scaling theory and simulations. The power-law extracted from the available experimental data in the rather limited range 1 < Z < 20, η0,linear/η0,ring ∼ Z 1.2±0.3, is weaker than the scaling prediction (η0,linear/η0,ring ∼ Z 1.6±0.3) and the simulations (η0,linear/ η0,ring ∼ Z2.0±0.3). Nevertheless, the present collection of state-of-the-art experimental data unambiguously demonstrates that rings exhibit a universal trend clearly departing from that of their linear counterparts, and hence it represents a major step toward resolving a 30-year-old problem. © 2013 American Chemical Society.

Læring og refleksion

DEFF Research Database (Denmark)

Wahlgren, B.; Rattleff, Pernille; Høyrup, S.

State of the art inden for forskning om læring på arbejdspladsen samt gennemgang af læringsteori og refleksionsbegrebet hos Dewey, Dreyfus, Schön, Argyris, Kolb, Jarvis, Mezirow og Brookfield. Afsluttes med diskussion af syntetiseret model for læring på arbejdspladsen.......State of the art inden for forskning om læring på arbejdspladsen samt gennemgang af læringsteori og refleksionsbegrebet hos Dewey, Dreyfus, Schön, Argyris, Kolb, Jarvis, Mezirow og Brookfield. Afsluttes med diskussion af syntetiseret model for læring på arbejdspladsen....

Birth Control Ring

Science.gov (United States)

... Health Food & Fitness Diseases & Conditions Infections Drugs & Alcohol School & Jobs Sports Expert Answers (Q&A) Staying Safe Videos for Educators Search English Español Birth Control Ring KidsHealth / For Teens / Birth Control Ring What's ...

Selectively catalytic activity of metal–organic frameworks depending on the N-position within the pyridine ring of their building blocks

Energy Technology Data Exchange (ETDEWEB)

Xu, Haitao, E-mail: xuhaitao@ecust.edu.cn [School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237 (China); Gou, Yongxia; Ye, Jing; Xu, Zhen-liang [School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237 (China); Wang, Zixuan [School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237 (China)

2016-05-15

Iron metal–organic frameworks (MOFs) [Fe(L){sub 2}(SCN){sub 2}]{sub ∝} (L1: 4-bpdh=2,5-bis(4-pyridyl)-3,4-diaza-2,4-hexadiene for 1Fe; and L2: 3-bpdh=2,5-bis(3-pyridyl)-3,4-diaza-2,4-hexadiene for 2Fe) were assembled in a MeOH–H{sub 2}O solvent system. 1Fe exhibits a two-dimensional extended-grid network, whereas 2Fe exhibits a stair-like double-chain; the N-position within the pyridine ring of the complexes was observed to regulate the MOF structure as layers or chains. Furthermore, selectively catalytic activity was observed for the layered MOF but not the chain-structured MOF; micro/nanoparticles of the layered MOF were therefore investigated for new potential applications of micro/nano MOFs. - Graphical abstract: Iron metal–organic frameworks (MOFs) [Fe(L){sub 2}(SCN){sub 2}]{sub ∝} (L1: 4-bpdh=2,5-bis(4-pyridyl)-3,4-diaza-2,4-hexadiene for 1Fe; and L2: 3-bpdh=2,5-bis(3-pyridyl)-3,4-diaza-2,4-hexadiene for 2Fe) were assembled in a MeOH–H{sub 2}O solvent system. The N-position within the pyridine ring of the complexes was observed to regulate the MOF structure as layers or chains. Selectively catalytic activity was observed for the layered MOF but not the chain-structured MOF. - Highlights: • Synthesis and structure of metal–organic framework [Fe(L){sub 2}(SCN){sub 2}]{sub ∝}. • Selectively catalytic activity depending on the N-position within the pyridine ring. • The degradation and conversion of methyl orange.

Selectively catalytic activity of metal–organic frameworks depending on the N-position within the pyridine ring of their building blocks

International Nuclear Information System (INIS)

Xu, Haitao; Gou, Yongxia; Ye, Jing; Xu, Zhen-liang; Wang, Zixuan

2016-01-01

Iron metal–organic frameworks (MOFs) [Fe(L) 2 (SCN) 2 ] ∝ (L1: 4-bpdh=2,5-bis(4-pyridyl)-3,4-diaza-2,4-hexadiene for 1Fe; and L2: 3-bpdh=2,5-bis(3-pyridyl)-3,4-diaza-2,4-hexadiene for 2Fe) were assembled in a MeOH–H 2 O solvent system. 1Fe exhibits a two-dimensional extended-grid network, whereas 2Fe exhibits a stair-like double-chain; the N-position within the pyridine ring of the complexes was observed to regulate the MOF structure as layers or chains. Furthermore, selectively catalytic activity was observed for the layered MOF but not the chain-structured MOF; micro/nanoparticles of the layered MOF were therefore investigated for new potential applications of micro/nano MOFs. - Graphical abstract: Iron metal–organic frameworks (MOFs) [Fe(L) 2 (SCN) 2 ] ∝ (L1: 4-bpdh=2,5-bis(4-pyridyl)-3,4-diaza-2,4-hexadiene for 1Fe; and L2: 3-bpdh=2,5-bis(3-pyridyl)-3,4-diaza-2,4-hexadiene for 2Fe) were assembled in a MeOH–H 2 O solvent system. The N-position within the pyridine ring of the complexes was observed to regulate the MOF structure as layers or chains. Selectively catalytic activity was observed for the layered MOF but not the chain-structured MOF. - Highlights: • Synthesis and structure of metal–organic framework [Fe(L) 2 (SCN) 2 ] ∝ . • Selectively catalytic activity depending on the N-position within the pyridine ring. • The degradation and conversion of methyl orange.

Encouraging formative assessments of leadership for foundation doctors.

Science.gov (United States)

Hadley, Lindsay; Black, David; Welch, Jan; Reynolds, Peter; Penlington, Clare

2015-08-01

Clinical leadership is considered essential for maintaining and improving patient care and safety in the UK, and is incorporated in the curriculum for all trainee doctors. Despite the growing focus on the importance of leadership, and the introduction of the Medical Leadership Competency Framework (MLCF) in the UK, leadership education for doctors in training is still in its infancy. Assessment is focused on clinical skills, and trainee doctors receive very little formal feedback on their leadership competencies. In this article we describe the approach taken by Health Education Kent, Sussex and Surrey (HEKSS) to raise the profile of leadership amongst doctors in training in the South Thames Foundation School (STFS). An annual structured formative assessment in leadership for each trainee has been introduced, supported by leadership education for both trainees and their supervisors in HEKSS trusts. We analysed over 500 of these assessments from the academic year 2012/13 for foundation doctors in HEKSS trusts, in order to assess the quality of the feedback. From the analysis, potential indicators of more effective formative assessments were identified. These may be helpful in improving the leadership education programme for future years. There is a wealth of evidence to highlight the importance and value of formative assessments; however, particularly for foundation doctors, these have typically been focused on assessing clinical capabilities. This HEKSS initiative encourages doctors to recognise leadership opportunities at the beginning of their careers, seeks to help them understand the importance of acquiring leadership skills and provides structured feedback to help them improve. Leadership education for doctors in training is still in its infancy. © 2015 John Wiley & Sons Ltd.

From coffee ring to spherulites ring of poly(ethylene oxide) film from drying droplet

Science.gov (United States)

Hu, Yinchun; Zhang, Xuerong; Qiu, Maibo; Wei, Yan; Zhou, Qiong; Huang, Di

2018-03-01

We discuss how the "spherulites ring" morphology and "coffee ring" profile of PEO film formed by the drying droplet at glass substrate with different heating rate. Upon increasing the heating rate of substrate, it is found that deposited PEO film from drying droplet shows the unusually observed "coffee ring" profile and "spherulites ring" morphology. The main mechanism for this phenomenon is proposed to be an enhanced Marangoni convection which is induced by the increased solute concentration gradient and reduced viscous force above 70 °C. A simple formation mechanism of the unusually observed "coffee ring" profile and "spherulites ring" morphology is proposed. These findings can be exploited to trace the center of Marangoni convection, with potential applications in designing the spherulite patterns of crystalline polymer films in ink-jet printing and self-assembly fields.

Comparative study of efficacy, tolerability and compliance of oral iron preparations (iron edetate, iron polymatose complex) and intramuscular iron sorbitol in iron deficiency anaemia in children

International Nuclear Information System (INIS)

Afzal, M.; Qureshi, S.M.; Lutafullah, M.

2009-01-01

To compare the efficacy, tolerability and compliance of oral iron preparations(iron edetate and Iron polymaltose complex) with each other and with intramuscular iron sorbitol in iron deficiency anaemia in children. A Randomized Controlled Trial (RCT) was carried out at the Paediatric Department of Combined Military Hospital (CMH) from January 2006 to December 2007. In total 146 children, up to 12 years age having haemoglobin (Hb%) less than 8 gm% were included. They were randomly distributed into three groups. Group A(64 cases) received oral sodium iron edetate (SIE), Group B (40 cases) received oral iron polymaltose complex (IPC) and group C (42 cases) received intramuscular iron sorbitol (IS) in recommended dosages. Rise in Hb%>10 gm% was kept as desired target. Maximum duration of treatment planned was 2 weeks for parenteral iron (group C) and 12 weeks for oral iron (groups A and B). Haematological parameters- Hb%, mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH), mean corpuscular haemoglobin concentration (MCHC) were measured at induction followed at 2 weeks, 4 weeks, 8 weeks and 12 weeks after start of treatment. Compliance and drop out rates were determined on each visit. Data was analyzed using SPSS version 10. ANOVA was used to analyze difference in rise in Hb% at various intervals. Statistically significant increase in mean Hb%, MCV, MCHC after 02 weeks was observed in group C (IS). Rise in these parameters became significant in group A (SIE) and B (IPC) after 04 weeks. Persistent rise was observed in oral groups at 08 and 12 weeks. Rise in Hb% was much faster in group C (IS). It took 2 weeks to achieve mean Hb% > 10 gm% and compliance rate was 40.5%, while to achieve same target, duration required was 8 weeks in group A (SIE) and 12 weeks in group B (IPC) and compliance rate was 39% and 30% respectively. Adverse effects were much more common with group A (SIE) as compared to other two groups. Intramuscular iron sorbitol is a reliable and

Doctor's Orders

Institute of Scientific and Technical Information of China (English)

VALERIE SARTOR

2010-01-01

@@ "To become a doctor is like becoming a bomb expert:It takes a long time to learn this skill; you must use care and intuition; and you must understand that your work has grave consequences for those around you,"said Amgalan Gamazhapov,an advanced medical student who studies traditional Chinese and Mongolian medicine at the Inner Mongolia Medical University.

Systematic Search for Rings around Kepler Planet Candidates: Constraints on Ring Size and Occurrence Rate

Science.gov (United States)

Aizawa, Masataka; Masuda, Kento; Kawahara, Hajime; Suto, Yasushi

2018-05-01

We perform a systematic search for rings around 168 Kepler planet candidates with sufficient signal-to-noise ratios that are selected from all of the short-cadence data. We fit ringed and ringless models to their light curves and compare the fitting results to search for the signatures of planetary rings. First, we identify 29 tentative systems, for which the ringed models exhibit statistically significant improvement over the ringless models. The light curves of those systems are individually examined, but we are not able to identify any candidate that indicates evidence for rings. In turn, we find several mechanisms of false positives that would produce ringlike signals, and the null detection enables us to place upper limits on the size of the rings. Furthermore, assuming the tidal alignment between axes of the planetary rings and orbits, we conclude that the occurrence rate of rings larger than twice the planetary radius is less than 15%. Even though the majority of our targets are short-period planets, our null detection provides statistical and quantitative constraints on largely uncertain theoretical models of the origin, formation, and evolution of planetary rings.

Doctor-Shopping Behavior among Patients with Eye Floaters

Directory of Open Access Journals (Sweden)

Gow-Lieng Tseng

2015-07-01

Full Text Available Patients suffering from eye floaters often resort to consulting more than one ophthalmologist. The purpose of this study, using the Health Belief Model (HBM, was to identify the factors that influence doctor-shopping behavior among patients with eye floaters. In this cross-sectional survey, 175 outpatients who presented floaters symptoms were enrolled. Data from 143 patients (77 first time visitors and 66 doctor-shoppers who completed the questionnaire were analyzed. Descriptive and logistic regression analyses were performed. We found that women and non-myopia patients were significantly related with frequent attendance and doctor switching. Though the HBM has performed well in a number of health behaviors studies, but most of the conceptual constructors of HBM did not show significant differences between the first time visitors and true doctor-shoppers in this study. Motivation was the only significant category affecting doctor-shopping behavior of patients with eye floaters.

Doctor-Shopping Behavior among Patients with Eye Floaters.

Science.gov (United States)

Tseng, Gow-Lieng; Chen, Cheng-Yu

2015-07-13

Patients suffering from eye floaters often resort to consulting more than one ophthalmologist. The purpose of this study, using the Health Belief Model (HBM), was to identify the factors that influence doctor-shopping behavior among patients with eye floaters. In this cross-sectional survey, 175 outpatients who presented floaters symptoms were enrolled. Data from 143 patients (77 first time visitors and 66 doctor-shoppers) who completed the questionnaire were analyzed. Descriptive and logistic regression analyses were performed. We found that women and non-myopia patients were significantly related with frequent attendance and doctor switching. Though the HBM has performed well in a number of health behaviors studies, but most of the conceptual constructors of HBM did not show significant differences between the first time visitors and true doctor-shoppers in this study. Motivation was the only significant category affecting doctor-shopping behavior of patients with eye floaters.

Results of the First American Prospective Study of Intravenous Iron in Oral Iron-Intolerant Iron-Deficient Gravidas.

Science.gov (United States)

Auerbach, Michael; James, Stephanie E; Nicoletti, Melissa; Lenowitz, Steven; London, Nicola; Bahrain, Huzefa F; Derman, Richard; Smith, Samuel

2017-12-01

Anemia affects up to 42% of gravidas. Neonatal iron deficiency is associated with low birth weight, delayed growth and development, and increased cognitive and behavioral abnormalities. While oral iron is convenient, up to 70% report significant gastrointestinal toxicity. Intravenous iron formulations allowing replacement in one visit with favorable side-effect profiles decrease rates of anemia with improved hemoglobin responses and maternal fetal outcomes. Seventy-four oral iron-intolerant, second- and third-trimester iron-deficient gravidas were questioned for oral iron intolerance and treated with intravenous iron. All received 1000 mg of low-molecular-weight iron dextran in 250 mL normal saline. Fifteen minutes after a test dose, the remainder was infused over the balance of 1 hour. Subjects were called at 1, 2, and 7 days to assess delayed reactions. Four weeks postinfusion or postpartum, hemoglobin levels and iron parameters were measured. Paired t test was used for hemoglobin and iron; 58/73 women were questioned about interval growth and development of their babies. Seventy-three of 74 enrolled subjects completed treatment. Sixty had paired pre- and posttreatment data. The mean pre- and posthemoglobin concentrations were 9.7 and 10.8 g/dL (P iron deficiency anemia. Intravenous iron has less toxicity and is more effective, supporting moving it closer to frontline therapy. Copyright © 2017 Elsevier Inc. All rights reserved.

Studying Irony Detection Beyond Ironic Criticism: Let's Include Ironic Praise

Directory of Open Access Journals (Sweden)

Richard Bruntsch

2017-04-01

Full Text Available Studies of irony detection have commonly used ironic criticisms (i.e., mock positive evaluation of negative circumstances as stimulus materials. Another basic type of verbal irony, ironic praise (i.e., mock negative evaluation of positive circumstances is largely absent from studies on individuals' aptitude to detect verbal irony. However, it can be argued that ironic praise needs to be considered in order to investigate the detection of irony in the variety of its facets. To explore whether the detection ironic praise has a benefit beyond ironic criticism, three studies were conducted. In Study 1, an instrument (Test of Verbal Irony Detection Aptitude; TOVIDA was constructed and its factorial structure was tested using N = 311 subjects. The TOVIDA contains 26 scenario-based items and contains two scales for the detection of ironic criticism vs. ironic praise. To validate the measurement method, the two scales of the TOVIDA were experimentally evaluated with N = 154 subjects in Study 2. In Study 3, N = 183 subjects were tested to explore personality and ability correlates of the two TOVIDA scales. Results indicate that the co-variance between the ironic TOVIDA items was organized by two inter-correlated but distinct factors: one representing ironic praise detection aptitude and one representing ironic criticism detection aptitude. Experimental validation showed that the TOVIDA items truly contain irony and that item scores reflect irony detection. Trait bad mood and benevolent humor (as a facet of the sense of humor were found as joint correlates for both ironic criticism and ironic praise detection scores. In contrast, intelligence, trait cheerfulness, and corrective humor were found as unique correlates of ironic praise detection scores, even when statistically controlling for the aptitude to detect ironic criticism. Our results indicate that the aptitude to detect ironic praise can be seen as distinct from the aptitude to detect ironic

Find a Doctor

Science.gov (United States)

... Manager Book Appointments Getting Care When on Active Duty Getting Care When Traveling What's Covered Health Care Dental Care ... Manager Book Appointments Getting Care When on Active Duty Getting Care When Traveling Bread Crumbs Home Find a Doctor ...

Absorption of medicamental iron and iron from food

International Nuclear Information System (INIS)

Reizenstein, P.; Carlmark, B.; Ehn, L.; Forsberg, K.; Hoeglund, S.; Terpstra, T.

1976-01-01

Methods are reviewed for the measurement of iron absorption. The chemical balance method has been almost entirely supplanted by radioisotope methods, which include notably whole-body counting and measurement of incorporation of radioiron into red cells. A survey is also given of the various conditions that influence iron absorption, including chemical form of iron, amount of iron, accompanying diet. Absorption tests must be conducted under relevant conditions. (author)

[Doctoral thesis projects for medical students? Retrospective estimation of the fraction of successfully completed medical doctoral thesis projects at Witten/Herdecke University].

Science.gov (United States)

Scharfenberg, Janna; Schaper, Katharina; Krummenauer, Frank

2014-01-01

The German "Dr med" plays a specific role in doctoral thesis settings since students may start the underlying doctoral project during their studies at medical school. If a Medical Faculty principally encourages this approach, then it should support the students in performing the respective projects as efficiently as possible. Consequently, it must be ensured that students are able to implement and complete a doctoral project in parallel to their studies. As a characteristic efficiency feature of these "Dr med" initiatives, the proportion of doctoral projects successfully completed shortly after graduating from medical school is proposed and illustrated. The proposed characteristic can be estimated by the time period between the state examination (date of completion of the qualifying medical examination) and the doctoral examination. Completion of the doctoral project "during their medical studies" was then characterised by a doctoral examination no later than 12 months after the qualifying medical state examination. To illustrate the estimation and interpretation of this characteristic, it was retrospectively estimated on the basis of the full sample of all doctorates successfully completed between July 2009 and June 2012 at the Department of Human Medicine at the Faculty of Health of the University of Witten/Herdecke. During the period of investigation defined, a total number of 56 doctoral examinations were documented, 30 % of which were completed within 12 months after the qualifying medical state examination (95% confidence interval 19 to 44 %). The median duration between state and doctoral examination was 27 months. The proportion of doctoral projects completed parallel to the medical studies increased during the investigation period from 14 % in the first year (July 2009 till June 2010) to 40 % in the third year (July 2011 till June 2012). Only about a third of all "Dr med" projects at the Witten/Herdecke Faculty of Health were completed during or close to

Australian doctors and the visual arts. Part 5. Doctor-artists in South Australia, Tasmania, Western Australia and Queensland.

Science.gov (United States)

Hamilton, D G

1986-11-17

The contributions of Australian doctors to the visual arts are being described in a series of six articles. Work from doctors in New South Wales and Victoria has been covered previously. Now activities in South Australia, Tasmania, Western Australia, Queensland and the Northern Territory are presented.

Gender variations in specialties among medical doctors working in ...

African Journals Online (AJOL)

Background: Gender variations exist in the choice of specialties among ... as it affects the distribution of doctors in public health institutions and patient care. ... For female doctors,pediatrics was the topmost specialty (25%) followed by ... Keywords: Gender variation,Specialties,Doctors,Public healthcare,Health workforce ...

Structure and dynamics of ringed galaxies

International Nuclear Information System (INIS)

Buta, R.J.

1984-01-01

In many spiral and SO galaxies, single or multiple ring structures are visible in the disk. These inner rings (r), outer rings (R), and nuclear rings (nr) were investigated by means of morphology, photometry, and spectroscopy in order to provide basic data on a long neglected phenomenon. The metric properties of each ring are investigated and found to correlate with the structure of the parent galaxy. When properly calibrated, inner rings in barred (SB) systems can be used as geometric extragalactic distance indicators to distances in excess of 100 Mpc. Other statistics are presented that confirm previous indications that the rings have preferred shapes, relative sizes, and orientations with respect to bars. A survey is made of the less homogeneous non-barred (SA) ringed systems, and the causes of the inhomogeneity are isolated. It is shown that rings can be identified in multiple-ring SA systems that are exactly analogous to those in barred spirals

Iron-Deficiency Anemia

Medline Plus

Full Text Available ... risk for iron-deficiency anemia, including: Vegetarian or vegan eating patterns. Not eating enough iron-rich foods, ... iron-fortified foods that have iron added. Vegetarian diets can provide enough iron if you choose nonmeat ...

The Doctorate in Chemistry. Carnegie Essays on the Doctorate: Chemistry.

Science.gov (United States)

Breslow, Ronald

The Carnegie Foundation commissioned a collection of essays as part of the Carnegie Initiative on the Doctorate (CID). Essays and essayists represent six disciplines that are part of the CID: chemistry, education, English, history, mathematics, and neuroscience. Intended to engender conversation about the conceptual foundation of doctoral…

Multiplicative Structure and Hecke Rings of Generator Matrices for Codes over Quotient Rings of Euclidean Domains

Directory of Open Access Journals (Sweden)

Hajime Matsui

2017-12-01

Full Text Available In this study, we consider codes over Euclidean domains modulo their ideals. In the first half of the study, we deal with arbitrary Euclidean domains. We show that the product of generator matrices of codes over the rings mod a and mod b produces generator matrices of all codes over the ring mod a b , i.e., this correspondence is onto. Moreover, we show that if a and b are coprime, then this correspondence is one-to-one, i.e., there exist unique codes over the rings mod a and mod b that produce any given code over the ring mod a b through the product of their generator matrices. In the second half of the study, we focus on the typical Euclidean domains such as the rational integer ring, one-variable polynomial rings, rings of Gaussian and Eisenstein integers, p-adic integer rings and rings of one-variable formal power series. We define the reduced generator matrices of codes over Euclidean domains modulo their ideals and show their uniqueness. Finally, we apply our theory of reduced generator matrices to the Hecke rings of matrices over these Euclidean domains.

Iron-Deficiency Anemia

Medline Plus

Full Text Available ... Iron-Deficiency Anemia Iron-Deficiency Anemia Also known as Leer en español Iron-deficiency anemia is a ... address the cause of your iron deficiency, such as any underlying bleeding. If undiagnosed or untreated, iron- ...

Binomial Rings: Axiomatisation, Transfer and Classification

OpenAIRE

Xantcha, Qimh Richey

2011-01-01

Hall's binomial rings, rings with binomial coefficients, are given an axiomatisation and proved identical to the numerical rings studied by Ekedahl. The Binomial Transfer Principle is established, enabling combinatorial proofs of algebraical identities. The finitely generated binomial rings are completely classified. An application to modules over binomial rings is given.

Serum iron and total iron binding capacity levels among the abo ...

African Journals Online (AJOL)

Iron deficiency anaemia is a common tropical disease. Iron plays a very important role in the human body. The understanding of the different blood groups ability to retain iron in their system can give an insight into their ability to handle the disease Iron deficiency anaemia. Serum Iron, Total Iron Binding Capacity (TIBC) and ...

AN N-BODY INTEGRATOR FOR GRAVITATING PLANETARY RINGS, AND THE OUTER EDGE OF SATURN'S B RING

International Nuclear Information System (INIS)

Hahn, Joseph M.; Spitale, Joseph N.

2013-01-01

A new symplectic N-body integrator is introduced, one designed to calculate the global 360° evolution of a self-gravitating planetary ring that is in orbit about an oblate planet. This freely available code is called epi i nt, and it is distinct from other such codes in its use of streamlines to calculate the effects of ring self-gravity. The great advantage of this approach is that the perturbing forces arise from smooth wires of ring matter rather than discreet particles, so there is very little gravitational scattering and so only a modest number of particles are needed to simulate, say, the scalloped edge of a resonantly confined ring or the propagation of spiral density waves. The code is applied to the outer edge of Saturn's B ring, and a comparison of Cassini measurements of the ring's forced response to simulations of Mimas's resonant perturbations reveals that the B ring's surface density at its outer edge is σ 0 = 195 ± 60 g cm –2 , which, if the same everywhere across the ring, would mean that the B ring's mass is about 90% of Mimas's mass. Cassini observations show that the B ring-edge has several free normal modes, which are long-lived disturbances of the ring-edge that are not driven by any known satellite resonances. Although the mechanism that excites or sustains these normal modes is unknown, we can plant such a disturbance at a simulated ring's edge and find that these modes persist without any damping for more than ∼10 5 orbits or ∼100 yr despite the simulated ring's viscosity ν s = 100 cm 2 s –1 . These simulations also indicate that impulsive disturbances at a ring can excite long-lived normal modes, which suggests that an impact in the recent past by perhaps a cloud of cometary debris might have excited these disturbances, which are quite common to many of Saturn's sharp-edged rings

Zinc deficiency-induced iron accumulation, a consequence of alterations in iron regulatory protein-binding activity, iron transporters, and iron storage proteins.

Science.gov (United States)

Niles, Brad J; Clegg, Michael S; Hanna, Lynn A; Chou, Susan S; Momma, Tony Y; Hong, Heeok; Keen, Carl L

2008-02-22

One consequence of zinc deficiency is an elevation in cell and tissue iron concentrations. To examine the mechanism(s) underlying this phenomenon, Swiss 3T3 cells were cultured in zinc-deficient (D, 0.5 microM zinc), zinc-supplemented (S, 50 microM zinc), or control (C, 4 microM zinc) media. After 24 h of culture, cells in the D group were characterized by a 50% decrease in intracellular zinc and a 35% increase in intracellular iron relative to cells in the S and C groups. The increase in cellular iron was associated with increased transferrin receptor 1 protein and mRNA levels and increased ferritin light chain expression. The divalent metal transporter 1(+)iron-responsive element isoform mRNA was decreased during zinc deficiency-induced iron accumulation. Examination of zinc-deficient cells revealed increased binding of iron regulatory protein 2 (IRP2) and decreased binding of IRP1 to a consensus iron-responsive element. The increased IRP2-binding activity in zinc-deficient cells coincided with an increased level of IRP2 protein. The accumulation of IRP2 protein was independent of zinc deficiency-induced intracellular nitric oxide production but was attenuated by the addition of the antioxidant N-acetylcysteine or ascorbate to the D medium. These data support the concept that zinc deficiency can result in alterations in iron transporter, storage, and regulatory proteins, which facilitate iron accumulation.

Mammalian iron metabolism and its control by iron regulatory proteins☆

Science.gov (United States)

Anderson, Cole P.; Shen, Lacy; Eisenstein, Richard S.; Leibold, Elizabeth A.

2013-01-01

Cellular iron homeostasis is maintained by iron regulatory proteins 1 and 2 (IRP1 and IRP2). IRPs bind to iron-responsive elements (IREs) located in the untranslated regions of mRNAs encoding protein involved in iron uptake, storage, utilization and export. Over the past decade, significant progress has been made in understanding how IRPs are regulated by iron-dependent and iron-independent mechanisms and the pathological consequences of IRP2 deficiency in mice. The identification of novel IREs involved in diverse cellular pathways has revealed that the IRP–IRE network extends to processes other than iron homeostasis. A mechanistic understanding of IRP regulation will likely yield important insights into the basis of disorders of iron metabolism. This article is part of a Special Issue entitled: Cell Biology of Metals. PMID:22610083

Galactic rings revisited - I. CVRHS classifications of 3962 ringed galaxies from the Galaxy Zoo 2 Database

Science.gov (United States)

Buta, Ronald J.

2017-11-01

Rings are important and characteristic features of disc-shaped galaxies. This paper is the first in a series that re-visits galactic rings with the goals of further understanding the nature of the features and for examining their role in the secular evolution of galaxy structure. The series begins with a new sample of 3962 galaxies drawn from the Galaxy Zoo 2 citizen science data base, selected because zoo volunteers recognized a ring-shaped pattern in the morphology as seen in Sloan Digital Sky Survey colour images. The galaxies are classified within the framework of the Comprehensive de Vaucouleurs revised Hubble-Sandage system. It is found that zoo volunteers cued on the same kinds of ring-like features that were recognized in the 1995 Catalogue of Southern Ringed Galaxies. This paper presents the full catalogue of morphological classifications, comparisons with other sources of classifications and some histograms designed mainly to highlight the content of the catalogue. The advantages of the sample are its large size and the generally good quality of the images; the main disadvantage is the low physical resolution that limits the detectability of linearly small rings such as nuclear rings. The catalogue includes mainly inner and outer disc rings and lenses. Cataclysmic (`encounter-driven') rings (such as ring and polar ring galaxies) are recognized in less than 1 per cent of the sample.

Doctors and romance: not only of interest to Mills and Boon readers.

Science.gov (United States)

Callister, Paul; Badkar, Juthika; Didham, Robert

2009-06-01

Internationally there is a growing demand for health services. Skilled health workers, including doctors, have a high degree of international mobility and New Zealand (NZ) stands out internationally in terms of the significant flows of doctors in and out of the country. Through changes in training of doctors in NZ and migration flows, there have been major shifts in the composition of the medical workforce in NZ since the mid-1980s. Studies of the changing nature of the medical workforce often focus on gender and migration separately as well as only considering doctors as individuals. The aim of this exploratory study is to examine the living arrangements of doctors, the composition of migrant doctors who are coming to NZ, and to understand the educational and employment status of the partners of doctors. This study is a descriptive analysis primarily using census data from 1986 through to 2006 and immigration data collected by the Department of Labour. Half of the female medical doctors approved for residence through the Skilled/Business stream migrated independently, while for male doctors less than athird came to NZ independently. Male migrant doctors were more likely to be partnered. Census data showed that people with medical backgrounds tend to partner with each other. However, these relationships are changing, as more women become doctors. In 1986 about 14% of male doctors had a nurse or midwife as a partner and nearly 9% had a doctor partner. By 2006 the proportion of partners of male doctors who were also doctors had risen to 16%, higher than the 9% who were nurses. For female doctors the changes are more dramatic. In 1986, 42% of female doctors in relationships had a doctor as a partner. By 2006, female doctors had increased substantially, but the percentage with a doctor partner had dropped to under athird. Well-qualified couples where one or both are doctors, have a greater propensityto live in main urban areas. Through official reports and extensive

Extracting phosphoric iron under laboratorial conditions smelting bog iron ores

International Nuclear Information System (INIS)

Török, B; Thiele, A

2013-01-01

In recent years it has been indicated by archaeometric investigations that phosphoric-iron (P-iron, low carbon steel with 0,5-1,5wt% P), which is an unknown and unused kind of steel in the modern industry, was widely used in different parts of the world in medieval times. In this study we try to explore the role of phosphorus in the arhaeometallurgy of iron and answer some questions regarding the smelting bog iron ores with high P-content. XRF analyses were performed on bog iron ores collected in Somogy county. Smelting experiments were carried out on bog iron ores using a laboratory model built on the basis of previously conducted reconstructed smelting experiments in copies of excavated furnaces. The effect of technological parameters on P-content of the resulted iron bloom was studied. OM and SEM-EDS analyses were carried out on the extracted iron and slag samples. On the basis of the material analyses it can be stated that P-iron is usually extracted but the P-content is highly affected by technological parameters. Typical microstructures of P-iron and of slag could also be identified. It could also be established that arsenic usually solved in high content in iron as well

Iron Therapy in Patients with Heart Failure and Iron Deficiency: Review of Iron Preparations for Practitioners.

Science.gov (United States)

Drozd, Marcin; Jankowska, Ewa A; Banasiak, Waldemar; Ponikowski, Piotr

2017-06-01

In patients with heart failure (HF), iron deficiency (ID) correlates with decreased exercise capacity and poor health-related quality of life, and predicts worse outcomes. Both absolute (depleted iron stores) and functional (where iron is unavailable for dedicated tissues) ID can be easily evaluated in patients with HF using standard laboratory tests (assessment of serum ferritin and transferrin saturation). Intravenous iron therapy in iron-deficient patients with HF and reduced ejection fraction has been shown to alleviate HF symptoms and improve exercise capacity and quality of life. In this paper, we provide information on how to diagnose ID in HF. Further we discuss pros and cons of different iron preparations and discuss the results of major trials implementing iron supplementation in HF patients, in order to provide practical guidance for clinicians on how to manage ID in patients with HF.

Siderophore-mediated iron trafficking in humans is regulated by iron

Science.gov (United States)

Liu, Zhuoming; Lanford, Robert; Mueller, Sebastian; Gerhard, Glenn S.; Luscieti, Sara; Sanchez, Mayka; Devireddy, L.

2013-01-01

Siderophores are best known as small iron binding molecules that facilitate microbial iron transport. In our previous study we identified a siderophore-like molecule in mammalian cells and found that its biogenesis is evolutionarily conserved. A member of the short chain dehydrogenase family of reductases, 3-OH butyrate dehydrogenase (BDH2) catalyzes a rate-limiting step in the biogenesis of the mammalian siderophore. We have shown that depletion of the mammalian siderophore by inhibiting expression of bdh2 results in abnormal accumulation of cellular iron and mitochondrial iron deficiency. These observations suggest that the mammalian siderophore is a critical regulator of cellular iron homeostasis and facilitates mitochondrial iron import. By utilizing bioinformatics, we identified an iron-responsive element (IRE; a stem-loop structure that regulates genes expression post-transcriptionally upon binding to iron regulatory proteins or IRPs) in the 3′-untranslated region (3′-UTR) of the human BDH2 (hBDH2) gene. In cultured cells as well as in patient samples we now demonstrate that the IRE confers iron-dependent regulation on hBDH2 and binds IRPs in RNA electrophoretic mobility shift assays. In addition, we show that the hBDH2 IRE associates with IRPs in cells and that abrogation of IRPs by RNAi eliminates the iron-dependent regulation of hBDH2 mRNA. The key physiologic implication is that iron-mediated post-transcriptional regulation of hBDH2 controls mitochondrial iron homeostasis in human cells. These observations provide a new and an unanticipated mechanism by which iron regulates its intracellular trafficking. PMID:22527885

Doctor Down

Directory of Open Access Journals (Sweden)

N.V. Nagornaya

2013-09-01

Full Text Available The article presents the biographical data of John Langdon Down, his invaluable contribution to the development of rehabilitation programs for children with Down syndrome. The basis of these programs was the socialization of people with intellectual disabilities. In doctor Down’s rehabilitation center there were used methods, including health care, education, physical education, the formation of correct behavior.

Doctoral Dissertation Defences: Performing Ambiguity between Ceremony and Assessment

NARCIS (Netherlands)

van der Heide, Arjen; Rufas, Alix; Supper, Alexandra

2016-01-01

Dissertation defenses are ambiguous affairs, which mark both the end of a long process of doctoral education and the inauguration of a doctoral candidate into a body of experts. At Maastricht University (and other Dutch universities), the decision to award a doctoral degree is made on the basis of

Life Satisfaction and Frequency of Doctor Visits

Science.gov (United States)

Kim, Eric S.; Park, Nansook; Sun, Jennifer K.; Smith, Jacqui; Peterson, Christopher

2015-01-01

Objective Identifying positive psychological factors that reduce health care use may lead to innovative efforts that help build a more sustainable and high quality health care system. Prospective studies indicate that life satisfaction is associated with good health behaviors, enhanced health, and longer life, but little information is available about the association between life satisfaction and health care use. We tested whether higher life satisfaction was prospectively associated with fewer doctor visits. We also examined potential interactions between life satisfaction and health behaviors. Methods Participants were 6,379 adults from the Health and Retirement Study, a prospective and nationally representative panel study of American adults over the age of 50. Participants were tracked for four years. We analyzed the data using a generalized linear model with a gamma distribution and log link. Results Higher life satisfaction was associated with fewer doctor visits. On a six-point life satisfaction scale, each unit increase in life satisfaction was associated with an 11% decrease in doctor visits—after adjusting for sociodemographic factors (RR = 0.89, 95% CI = 0.86 to 0.93). The most satisfied respondents (N=1,121; 17.58%) made 44% fewer doctor visits than the least satisfied (N=182; 2.85%). The association between higher life satisfaction and reduced doctor visits remained even after adjusting for baseline health and a wide range of sociodemographic, psychosocial, and health-related covariates (RR = 0.96, 95% CI = 0.93 to 0.99). Conclusions Higher life satisfaction is associated with fewer doctor visits, which may have important implications for reducing health care costs. PMID:24336427

Life satisfaction and frequency of doctor visits.

Science.gov (United States)

Kim, Eric S; Park, Nansook; Sun, Jennifer K; Smith, Jacqui; Peterson, Christopher

2014-01-01

Identifying positive psychological factors that reduce health care use may lead to innovative efforts that help build a more sustainable and high-quality health care system. Prospective studies indicate that life satisfaction is associated with good health behaviors, enhanced health, and longer life, but little information about the association between life satisfaction and health care use is available. We tested whether higher life satisfaction was prospectively associated with fewer doctor visits. We also examined potential interactions between life satisfaction and health behaviors. Participants were 6379 adults from the Health and Retirement Study, a prospective and nationally representative panel study of American adults older than 50 years. Participants were tracked for 4 years. We analyzed the data using a generalized linear model with a gamma distribution and log link. Higher life satisfaction was associated with fewer doctor visits. On a 6-point life satisfaction scale, each unit increase in life satisfaction was associated with an 11% decrease in doctor visits--after adjusting for sociodemographic factors (relative risk = 0.89, 95% confidence interval = 0.86-0.93). The most satisfied respondents (n = 1121; 17.58%) made 44% fewer doctor visits than did the least satisfied (n = 182; 2.85%). The association between higher life satisfaction and reduced doctor visits remained even after adjusting for baseline health and a wide range of sociodemographic, psychosocial, and health-related covariates (relative risk = 0.96, 95% confidence interval = 0.93-0.99). Higher life satisfaction is associated with fewer doctor visits, which may have important implications for reducing health care costs.

Quantum Fourier Transform Over Galois Rings

OpenAIRE

Zhang, Yong

2009-01-01

Galois rings are regarded as "building blocks" of a finite commutative ring with identity. There have been many papers on classical error correction codes over Galois rings published. As an important warm-up before exploring quantum algorithms and quantum error correction codes over Galois rings, we study the quantum Fourier transform (QFT) over Galois rings and prove it can be efficiently preformed on a quantum computer. The properties of the QFT over Galois rings lead to the quantum algorit...

Novel manifestations of the Aharonov-Bohm effect in quantum rings and Moebius rings

International Nuclear Information System (INIS)

Fomin, Vladimir M.

2013-01-01

- An overview is given on the recent experimental and theoretical advancements in studies of novel manifestations of the Aharonov-Bohm quantum-interference effect for excitons confined to self assembled quantum rings and other semiconductor nanostructures with ring-like states of charge carriers as well as for electrons in Moebius rings at the micro- and nanoscale. The exciton Aharonov-Bohm effect can be effectively controlled by an out-of-plane magnetic field, a vertical electric field, a spin disorder. A 'delocalization-to-localization' transition for the electron ground state occurs in a Moebius ring as it is made more inhomogeneous. (authors)

Ring closure in actin polymers

Energy Technology Data Exchange (ETDEWEB)

Sinha, Supurna, E-mail: supurna@rri.res.in [Raman Research Institute, Bangalore 560080 (India); Chattopadhyay, Sebanti [Doon University, Dehradun 248001 (India)

2017-03-18

We present an analysis for the ring closure probability of semiflexible polymers within the pure bend Worm Like Chain (WLC) model. The ring closure probability predicted from our analysis can be tested against fluorescent actin cyclization experiments. We also discuss the effect of ring closure on bend angle fluctuations in actin polymers. - Highlights: • Ring closure of biopolymers. • Worm like chain model. • Predictions for experiments.

On P-coherent endomorphism rings

Indian Academy of Sciences (India)

A ring is called right -coherent if every principal right ideal is finitely presented. Let M R be a right -module. We study the -coherence of the endomorphism ring of M R . It is shown that is a right -coherent ring if and only if every endomorphism of M R has a pseudokernel in add M R ; S is a left -coherent ring if and ...

IDRC Doctoral Research Awards 2018 | IDRC - International ...

International Development Research Centre (IDRC) Digital Library (Canada)

2018-05-30

May 30, 2018 ... You must be enrolled at a Canadian university at the doctoral level ... IDRC Doctoral Research Awards are intended to promote the capacity and growth of ... including academic training, local language capacity, professional ... funding opportunity to support Canadian-African research teams studying Ebola.

Differential growth in doctor-patient communications skills

NARCIS (Netherlands)

M van Es, Judith; Wieringa-de Waard, Margreet; Visser, Mechteld R. M.

2013-01-01

Although doctor-patient communication is considered a core competency for medical doctors, the effect of training has not been unequivocally established. Moreover, knowledge about the variance in the growth of different skills and whether certain patterns in growth can be detected could help us to

Diarrhea - what to ask your doctor - child

Science.gov (United States)

What to ask your doctor about diarrhea - child; Loose stools - what to ask your doctor - child ... FOODS What foods can make my child's diarrhea worse? How should I prepare the foods for my child? If my child is still breastfeeding or bottle feeding, do I ...

The feminisation of Canadian medicine and its impact upon doctor productivity.

Science.gov (United States)

Weizblit, Nataly; Noble, Jason; Baerlocher, Mark Otto

2009-05-01

We examined the differences in work patterns between female and male doctors in Canada to gain insight into the effect of an increased number of female doctors on overall doctor productivity. Data on the practice profiles of female and male doctors across Canada were extracted from the 2007 National Physician Survey. A doctor productivity measure, 'work hours per week per population' (WHPWPP), was created, based on the number of weekly doctor hours spent providing direct patient care per 100,000 citizens. The predicted WHPWPP was calculated for a hypothetical time-point when the female and male doctor populations reach equilibrium. The differences in current and predicted WHPWPP were then analysed. Female medical students currently (2007) outnumber male medical students (at 57.8% of the medical student population). The percentage of practising doctors who are women is highest in the fields of paediatrics, obstetrics and gynaecology, psychiatry and family practice. Female doctors work an average of 47.5 hours per week (giving 30.0 hours of direct patient care), compared with 53.8 hours worked by male doctors (35.0 hours of direct patient care) (P work less on call hours per week and see fewer patients while on-call. Female doctors are also more likely to take parental leave or a leave of absence (P work patterns described in the present study persist, an overall decrease in doctor productivity is to be anticipated.

New insights into iron deficiency and iron deficiency anemia.

Science.gov (United States)

Camaschella, Clara

2017-07-01

Recent advances in iron metabolism have stimulated new interest in iron deficiency (ID) and its anemia (IDA), common conditions worldwide. Absolute ID/IDA, i.e. the decrease of total body iron, is easily diagnosed based on decreased levels of serum ferritin and transferrin saturation. Relative lack of iron in specific organs/tissues, and IDA in the context of inflammatory disorders, are diagnosed based on arbitrary cut offs of ferritin and transferrin saturation and/or marker combination (as the soluble transferrin receptor/ferritin index) in an appropriate clinical context. Most ID patients are candidate to traditional treatment with oral iron salts, while high hepcidin levels block their absorption in inflammatory disorders. New iron preparations and new treatment modalities are available: high-dose intravenous iron compounds are becoming popular and indications to their use are increasing, although long-term side effects remain to be evaluated. Copyright © 2017 Elsevier Ltd. All rights reserved.

The social gradient in doctor-patient communication

Directory of Open Access Journals (Sweden)

Verlinde Evelyn

2012-03-01

Full Text Available Abstract Objective In recent years, the importance of social differences in the physician-patient relationship has frequently been the subject of research. A 2002 review synthesised the evidence on this topic. Considering the increasing importance of social inequalities in health care, an actualization of this review seemed appropriate. Methods A systematic search of literature published between 1965 and 2011 on the social gradient in doctor-patient communication. In this review social class was determined by patient's income, education or occupation. Results Twenty original research papers and meta-analyses were included. Social differences in doctor-patient communication were described according to the following classification: verbal behaviour including instrumental and affective behaviour, non-verbal behaviour and patient-centred behaviour. Conclusion This review indicates that the literature on the social gradient in doctor-patient communication that was published in the last decade, addresses new issues and themes. Firstly, most of the found studies emphasize the importance of the reciprocity of communication. Secondly, there seems to be a growing interest in patient's perception of doctor-patient communication. Practice implications By increasing the doctors' awareness of the communicative differences and by empowering patients to express concerns and preferences, a more effective communication could be established.

Barriers facing junior doctors in rural practice.

Science.gov (United States)

Smith, Deborah M

2005-01-01

Early postgraduate, or junior doctors, are still required to practise in rural and remote communities, and they continue to face numerous issues and difficulties. Within the hospital setting, exposure to rural practice appears to be very limited during internship, and also to some extent, during the second postgraduate year and beyond. This is a major issue for those required to undertake country relieving, rural terms or who will be bonded to rural and remote practice for several years after internship. This research investigated the current issues and difficulties faced by junior doctors, required to undertake rural and remote practice in Queensland, Australia. An exploratory study was undertaken. Primary data were collected through semi-structured interviews held with key stakeholders. Stakeholders included: directors of clinical training; medical educators; junior doctors; rural practitioners; academic rural practitioners; and medical administrators. Of the 23 people approached, a total of 19 agreed to be interviewed. The response rate was 82.6%. Similar to the issues identified in the literature, there are currently a number of barriers influencing the ability of junior doctors to practise competently and confidently when undertaking practice in rural and remote communities. Minimal clinical experience, lack of supervision and on-site support, inadequate orientation and uninformed expectations, limited access to relevant education, and the influence of isolation, results in an overall lack of preparation both professionally and personally. When asked, respondents supported the identification of core skills and knowledge, and integration of these and other issues affecting rural practice, into their hospital-based programs. Current hospital-based education and training programs were not adequately preparing junior doctors for rural and remote practice. It was commented that orientation and education, with a rural emphasis, could assist junior doctors in their

The complex thinking and prospect of actions of future doctors

Directory of Open Access Journals (Sweden)

Patrícia Segtowich

2011-12-01

Full Text Available This paper aims at discussing prospects of actions manifested by future doctors in the beginning of their doctoral training. The research started through my involvement in the ambit of doctoral education in the curriculum component Epistemological Basis of Research on Education in Science and Mathematics, offered in the Postgraduate Course in Science and Mathematics Education, at Federal University of Pori (UFPA in 2010 academic year. At these meetings, the teachers trainers requested the doctoral students, in pairs, to elaborate three questions about the following positioning: "HOW DO I SEE MYSELF AS A DOCTOR?" These questions were discussed by all the doctoral students and subsequently reduced to five to be answered by all individually. The responses to this questionnaire provided the data for this research. The answers revealed that doctoral students are not tied to methodologies or unique processes, this positioning being demonstrated through prospects of performance in ways that were diverse and interactive

Iron absorption studies

International Nuclear Information System (INIS)

Ekenved, G.

1976-01-01

The main objective of the present work was to study iron absorption from different iron preparations in different types of subjects and under varying therapeutic conditions. The studies were performed with different radioiron isotope techniques and with a serum iron technique. The preparations used were solutions of ferrous sulphate and rapidly-disintegrating tablets containing ferrous sulphate, ferrous fumarate and ferrous carbonate and a slow-release ferrous sulphate tablet of an insoluble matrix type (Duroferon Durules). The serum iron method was evaluated and good correlation was found between the serum iron response and the total amount of iron absorbed after an oral dose of iron given in solution or in tablet form. New technique for studying the in-vivo release properties of tablets was presented. Iron tablets labelled with a radio-isotope were given to healthy subjects. The decline of the radioactivity in the tablets was followed by a profile scanning technique applied to different types of iron tablets. The release of iron from the two types of tablets was shown to be slower in vivo than in vitro. It was found that co-administration of antacids and iron tablets led to a marked reduction in the iron absorption and that these drugs should not be administered sumultaneously. A standardized meal markedly decreased the absorbability of iron from iron tablets. The influence of the meal was more marked with rapidly-disintegrating than with slow-release ferrous sulphate tablets. The absorption from rapidly-disintegrating and slow-release ferrous sulphate tablets was compared under practical clinical conditions during an extended treatment period. The studies were performed in healthy subjects, blood donors and patients with iron deficiency anaemia and it was found that the absorption of iron from the slow-release tablets was significantly better than from the rapidly-disintegrating tablets in all three groups of subjects. (author)

Faithfully quadratic rings

CERN Document Server

Dickmann, M

2015-01-01

In this monograph the authors extend the classical algebraic theory of quadratic forms over fields to diagonal quadratic forms with invertible entries over broad classes of commutative, unitary rings where -1 is not a sum of squares and 2 is invertible. They accomplish this by: (1) Extending the classical notion of matrix isometry of forms to a suitable notion of T-isometry, where T is a preorder of the given ring, A, or T = A^2. (2) Introducing in this context three axioms expressing simple properties of (value) representation of elements of the ring by quadratic forms, well-known to hold in

BERKELEY: ALS ring

Energy Technology Data Exchange (ETDEWEB)

Anon.

1993-06-15

Everybody at Lawrence Berkeley Laboratory's Center for Beam Physics is pleased with the rapid progress in commissioning LBL's Advanced Light Source (ALS) electron storage ring, the foundation for this third-generation synchrotron radiation facility. Designed for a maximum current of 400 mA, the ALS storage ring reached 407 mA just 24 days after storing the first beam on 16 March. ALS construction as a US Department of Energy (DOE) national user facility to provide high-brightness vacuum ultra-violet and soft x-ray radiation began in October 1987. One technical requirement marking project completion was to accumulate a 50-mA current in the storage ring. The ALS passed this milestone on 24 March, a week ahead of the official deadline. Once injected, the electron beam decays quasi-exponentially primarily because of interactions with residual gas molecules in the storage-ring vacuum chamber. Eventually, when the pressure in the vacuum chamber with beam decreases toward the expected operating level of 1 nano Torr, it will only be necessary to refill the storage ring at intervals of four to eight hours. At present the vacuum is improving rapidly as surfaces are irradiated (scrubbed) by the synchrotron radiation itself. At 100 mA, beam lifetime was about one hour (9 April)

Compressible Vortex Ring

Science.gov (United States)

Elavarasan, Ramasamy; Arakeri, Jayawant; Krothapalli, Anjaneyulu

1999-11-01

The interaction of a high-speed vortex ring with a shock wave is one of the fundamental issues as it is a source of sound in supersonic jets. The complex flow field induced by the vortex alters the propagation of the shock wave greatly. In order to understand the process, a compressible vortex ring is studied in detail using Particle Image Velocimetry (PIV) and shadowgraphic techniques. The high-speed vortex ring is generated from a shock tube and the shock wave, which precedes the vortex, is reflected back by a plate and made to interact with the vortex. The shadowgraph images indicate that the reflected shock front is influenced by the non-uniform flow induced by the vortex and is decelerated while passing through the vortex. It appears that after the interaction the shock is "split" into two. The PIV measurements provided clear picture about the evolution of the vortex at different time interval. The centerline velocity traces show the maximum velocity to be around 350 m/s. The velocity field, unlike in incompressible rings, contains contributions from both the shock and the vortex ring. The velocity distribution across the vortex core, core diameter and circulation are also calculated from the PIV data.

BERKELEY: ALS ring

International Nuclear Information System (INIS)

Anon.

1993-01-01

Everybody at Lawrence Berkeley Laboratory's Center for Beam Physics is pleased with the rapid progress in commissioning LBL's Advanced Light Source (ALS) electron storage ring, the foundation for this third-generation synchrotron radiation facility. Designed for a maximum current of 400 mA, the ALS storage ring reached 407 mA just 24 days after storing the first beam on 16 March. ALS construction as a US Department of Energy (DOE) national user facility to provide high-brightness vacuum ultra-violet and soft x-ray radiation began in October 1987. One technical requirement marking project completion was to accumulate a 50-mA current in the storage ring. The ALS passed this milestone on 24 March, a week ahead of the official deadline. Once injected, the electron beam decays quasi-exponentially primarily because of interactions with residual gas molecules in the storage-ring vacuum chamber. Eventually, when the pressure in the vacuum chamber with beam decreases toward the expected operating level of 1 nano Torr, it will only be necessary to refill the storage ring at intervals of four to eight hours. At present the vacuum is improving rapidly as surfaces are irradiated (scrubbed) by the synchrotron radiation itself. At 100 mA, beam lifetime was about one hour (9 April)

Stress and wellbeing of junior doctors in Australia: a comparison with American doctors and population norms

OpenAIRE

Soares, Deanne S.; Chan, Lewis

2016-01-01

Background Stress in doctors adversely affects decision-making, memory, information-recall and attention, thereby negatively impacting upon the provision of safe and high quality patient care. As such, stress in doctors has been subject to increasing scientific scrutiny and has amassed greater public awareness in recent years. The aims of this study are to describe stress levels and the psychological wellbeing of current junior medical officers (JMOs), and to compare this to their predecessor...

Accidental ingestion of BiTine ring and a note on inefficient ring separation forceps

Directory of Open Access Journals (Sweden)

Baghele ON

2011-05-01

Full Text Available Om Nemichand Baghele1, Mangala Om Baghele21Department of Periodontology, SMBT Dental College and Hospital, Sangamner, Ahmednagar, Maharashtra, India; 2Private General Dental Practice, Mumbai, IndiaBackground: Accidental ingestion of medium-to-large instruments is relatively uncommon during dental treatment but can be potentially dangerous. A case of BiTine ring ingestion is presented with a note on inefficient ring separation forceps.Case description: A 28-year-old male patient accidentally ingested the BiTine ring (2 cm diameter, 0.5 cm outward projections while it was being applied to a distoproximal cavity in tooth # 19. The ring placement forceps were excessively flexible; bending of the beaks towards the ring combined with a poor no-slippage mechanism led to sudden disengagement of the ring and accelerated movement towards the pharynx. We followed the patient with bulk forming agents and radiographs. Fortunately the ring passed out without any complications.Clinical implications: Checking equipment and methods is as important as taking precautions against any preventable medical emergency. It is the responsibility of the clinician to check, verify and then use any instrument/equipment.Keywords: foreign bodies/radiography, foreign bodies/complications, equipment failure, dental instrument, accidental ingestion

Nitrate-dependent iron oxidation limits iron transport in anoxic ocean regions

Science.gov (United States)

Scholz, Florian; Löscher, Carolin R.; Fiskal, Annika; Sommer, Stefan; Hensen, Christian; Lomnitz, Ulrike; Wuttig, Kathrin; Göttlicher, Jörg; Kossel, Elke; Steininger, Ralph; Canfield, Donald E.

2016-11-01

Iron is an essential element for life on Earth and limits primary production in large parts of the ocean. Oxygen-free continental margin sediments represent an important source of bioavailable iron to the ocean, yet little of the iron released from the seabed reaches the productive sea surface. Even in the anoxic water of oxygen minimum zones, where iron solubility should be enhanced, most of the iron is rapidly re-precipitated. To constrain the mechanism(s) of iron removal in anoxic ocean regions we explored the sediment and water in the oxygen minimum zone off Peru. During our sampling campaign the water column featured two distinct redox boundaries separating oxic from nitrate-reducing (i.e., nitrogenous) water and nitrogenous from weakly sulfidic water. The sulfidic water mass in contact with the shelf sediment contained elevated iron concentrations >300 nM. At the boundary between sulfidic and nitrogenous conditions, iron concentrations dropped sharply to <20 nM coincident with a maximum in particulate iron concentration. Within the iron gradient, we found an increased expression of the key functional marker gene for nitrate reduction (narG). Part of this upregulation was related to the activity of known iron-oxidizing bacteria. Collectively, our data suggest that iron oxidation and removal is induced by nitrate-reducing microbes, either enzymatically through anaerobic iron oxidation or by providing nitrite for an abiotic reaction. Given the important role that iron plays in nitrogen fixation, photosynthesis and respiration, nitrate-dependent iron oxidation likely represents a key-link between the marine biogeochemical cycles of nitrogen, oxygen and carbon.

[Effect of doctor-patient communication education on oral clinical practice].

Science.gov (United States)

Wang, Yi; Tang, Yu; He, Yan; Zhu, Ya-qin

2012-08-01

To evaluate the effect of doctor-patient communication education on dental clinical practice. The process of 61 dental interns' clinical practice was divided into two stages. The dental interns were taught with traditional teaching method in the first stage. Doctor-patient communication and communication skill training were added to the second stage. Scale of medical student's doctor-patient communication behavior was used to evaluate the dental interns' behavior by themselves after two stages. The SEGUE frame work was used to evaluate the dental interns' behavior by teachers after two stages. All statistical analysis was performed using SPSS 13.0 software package. The result of scale of medical student's doctor-patient communication behavior was analyzed using Fisher exact test or Chi-square test. The score of the SEGUE frame work was analyzed using Student's t test. The result of Scale of medical student's doctor-patient communication behavior showed only 37.71% of dental interns could establish good doctor-patient relationship in the first stage. After doctor-patient communication and communication skill training, the percentage became 75.4%. The result of the SEGUE frame work showed the score was raised from 16.066±3.308 to 21.867±2.456, and a significant difference was found between the two stages. Doctor-Patient communication education can improve dental interns' communication skills and help to establish a good doctor-patient relationship.

On the Laurent polynomial rings

International Nuclear Information System (INIS)

Stefanescu, D.

1985-02-01

We describe some properties of the Laurent polynomial rings in a finite number of indeterminates over a commutative unitary ring. We study some subrings of the Laurent polynomial rings. We finally obtain two cancellation properties. (author)

Doctor of Professional Counseling: The Next Step

Science.gov (United States)

Southern, Stephen; Cade, Rochelle; Locke, Don W.

2012-01-01

Professional doctorates have been established in the allied health professions by clinicians seeking the highest levels of independent practice. Allied health professional doctorates include nursing practice (DNP), occupational therapy (OTD), psychology (PsyD), social work (DSW), and marriage and family therapy (DMFT). Lessons learned from the…

The Hi-Ring DCN Architecture

DEFF Research Database (Denmark)

Galili, Michael; Kamchevska, Valerija; Ding, Yunhong

2016-01-01

We will review recent work on the proposed hierarchical ring-based architecture (HiRing) proposed for data center networks. We will discuss the architecture and initial demonstrations of optical switching performance and time-domain synchronization......We will review recent work on the proposed hierarchical ring-based architecture (HiRing) proposed for data center networks. We will discuss the architecture and initial demonstrations of optical switching performance and time-domain synchronization...

Do doctors need statistics? Doctors' use of and attitudes to probability and statistics.

Science.gov (United States)

Swift, Louise; Miles, Susan; Price, Gill M; Shepstone, Lee; Leinster, Sam J

2009-07-10

There is little published evidence on what doctors do in their work that requires probability and statistics, yet the General Medical Council (GMC) requires new doctors to have these skills. This study investigated doctors' use of and attitudes to probability and statistics with a view to informing undergraduate teaching.An email questionnaire was sent to 473 clinicians with an affiliation to the University of East Anglia's Medical School.Of 130 respondents approximately 90 per cent of doctors who performed each of the following activities found probability and statistics useful for that activity: accessing clinical guidelines and evidence summaries, explaining levels of risk to patients, assessing medical marketing and advertising material, interpreting the results of a screening test, reading research publications for general professional interest, and using research publications to explore non-standard treatment and management options.Seventy-nine per cent (103/130, 95 per cent CI 71 per cent, 86 per cent) of participants considered probability and statistics important in their work. Sixty-three per cent (78/124, 95 per cent CI 54 per cent, 71 per cent) said that there were activities that they could do better or start doing if they had an improved understanding of these areas and 74 of these participants elaborated on this. Themes highlighted by participants included: being better able to critically evaluate other people's research; becoming more research-active, having a better understanding of risk; and being better able to explain things to, or teach, other people.Our results can be used to inform how probability and statistics should be taught to medical undergraduates and should encourage today's medical students of the subjects' relevance to their future careers. Copyright 2009 John Wiley & Sons, Ltd.

The master degree: A critical transition in STEM doctoral education

Science.gov (United States)

Lange, Sheila Edwards

The need to broaden participation in the nation's science, technology, engineering, and mathematics (STEM) undergraduate and graduate programs is currently a matter of national urgency. The small number of women and underrepresented minorities (URM) earning doctoral degrees in STEM is particularly troubling given significant increases in the number of students earning master's degrees since 1990. In the decade between 1990 and 2000, the total number of master's recipients increased by 42%. During this same time period, the number of women earning master's degrees increased by 56%, African Americans increased by 132%, American Indians by 101%, Hispanics by 146%, and Asian Americans by 117% (Syverson, 2003). Growth in underrepresented group education at the master's level raises questions about the relationship between master's and doctoral education. Secondary data analysis of the Survey of Earned Doctorates (SED) was used to examine institutional pathways to the doctorate in STEM disciplines and transitions from master's to doctoral programs by race and gender. While the study revealed no significant gender differences in pathways, compared to White and Asian American students, URM students take significantly different pathways to the doctorate. URM students are significantly more likely to earn the bachelor's, master's, and doctoral degrees at three different institutions. Their path is significantly more likely to include earning a master's degree en route to the doctorate. Further, URM students are more likely to experience transition between the master's and doctoral degrees, and the transitions are not limited to those who earn master's degrees at master's-only institutions. These findings suggest that earning a master's degree is more often a stepping stone to the doctorate for URM students. Master's degree programs, therefore, have the potential to be a valuable resource for policymakers and graduate programs seeking to increase the diversity of URM students

EBT ring physics

International Nuclear Information System (INIS)

Uckan, N.A.

1980-04-01

This workshop attempted to evaluate the status of the current experimental and theoretical understanding of hot electron ring properties. The dominant physical processes that influence ring formation, scaling, and their optimal behavior are also studied. Separate abstracts were prepared for each of the 27 included papers

The effect of diluting ruthenium by iron in RuxSey catalyst for oxygen reduction

International Nuclear Information System (INIS)

Delacote, Cyril; Lewera, Adam; Pisarek, Marcin; Kulesza, Pawel J.; Zelenay, Piotr; Alonso-Vante, Nicolas

2010-01-01

This study has focused on the synthesis of novel oxygen reduction reaction (ORR) chalcogenide catalysts, with Ru partially replaced by Fe in a cluster-type Ru x Se y . The catalysts were obtained by thermal decomposition of Ru 3 (CO) 12 and Fe(CO) 5 in the presence of Se. As indicated by the XPS data, the composition of catalyst nanoparticles depends on the solvent used (either p-xylene or dichlorobenzene). The presence of iron in synthesized catalysts has been confirmed by both EDAX and XPS. Voltammetric activation of the catalysts results in a partial removal of iron and unreacted selenium from the surface. The ORR performance of electrochemically pre-treated catalysts was evaluated using rotating disk and ring-disk electrodes in a sulfuric acid solution. No major change in the ORR mechanism relative to the Se/Ru catalyst has been observed with Fe-containing catalysts.

Ground Movement in SSRL Ring

International Nuclear Information System (INIS)

Sunikumar, Nikita

2011-01-01

Users of the Stanford Synchrotron Radiation Lightsource (SSRL) are being affected by diurnal motion of the synchrotron's storage ring, which undergoes structural changes due to outdoor temperature fluctuations. In order to minimize the effects of diurnal temperature fluctuations, especially on the vertical motion of the ring floor, scientists at SSRL tried three approaches: painting the storage ring white, covering the asphalt in the middle of the ring with highly reflective Mylar and installing Mylar on a portion of the ring roof and walls. Vertical motion in the storage ring is measured by a Hydrostatic Leveling System (HLS), which calculates the relative height of water in a pipe that extends around the ring. The 24-hr amplitude of the floor motion was determined using spectral analysis of HLS data, and the ratio of this amplitude before and after each experiment was used to quantitatively determine the efficacy of each approach. The results of this analysis showed that the Mylar did not have any significant effect on floor motion, although the whitewash project did yield a reduction in overall HLS variation of 15 percent. However, further analysis showed that the reduction can largely be attributed to a few local changes rather than an overall reduction in floor motion around the ring. Future work will consist of identifying and selectively insulating these local regions in order to find the driving force behind diurnal floor motion in the storage ring.

Iron-Deficiency Anemia

Medline Plus

Full Text Available ... and severity. Treatments may include iron supplements, procedures, surgery, and dietary ... iron supplements, also called iron pills or oral iron, by mouth once or several times a ...

Efficacy of iron fortification compared to iron supplementation among Vietnamese schoolchildren.

Science.gov (United States)

Thi Le, Huong; Brouwer, Inge D; Burema, Jan; Nguyen, Khan Cong; Kok, Frans J

2006-12-05

The effect of iron fortification is generally assumed to be less than iron supplementation; however, the magnitude of difference in effects is not known. The present study aims to compare the efficacy of these two strategies on anaemia and iron status. After screening on low Hb, 425 anaemic children in six primary schools in Tam Nong district of Phu Tho province were included in a randomized, placebo-controlled trial comparing two groups receiving iron fortified instant noodles or iron supplementation for 6 months and a control group, with children in all groups having been dewormed. Blood samples were collected before and after intervention for haemoglobin, serum ferritin (SF), serum transferrin receptor (TfR), C-reactive protein (CRP), and haemoglobinopathies analysis. Regression analysis was used to assess the effect of iron fortification and iron supplementation on haemoglobin concentration, SF, TfR, body iron, and anaemic status as outcome variables. The improvement of haemoglobin, SF, and body iron level in the group receiving iron fortification was 42% (2.6 g/L versus 6.2 g/L), 20% (23.5 microg/L versus 117.3 microg/L), and 31.3% (1.4 mg/kg versus 4.4 mg/kg) of that in the iron supplementation group. The prevalence of anaemia dropped to 15.1% in the control group, with an additional reduction of anaemia of 8.5% in the iron supplementation group. The additional reduction due to iron fortification was 5.4%, which amounts to well over 50% of the impact of supplementation. In conclusion, the efficacy of iron fortification based on reduction of prevalence of anaemia, and on the change in haemoglobin level, is about half of the maximum impact of supplementation in case of optimal compliance. Thus, in a population of anaemic children with mild iron deficiency, iron fortification should be the preferred strategy to combat anaemia.

Obstacles to Success--Doctoral Student Attrition in South Africa

Science.gov (United States)

Herman, Chaya

2011-01-01

The article explores doctoral attrition in South Africa, investigating and comparing the attributions of attrition of doctoral students and PhD programme leaders. The article is based on secondary data analysis of two large studies on doctoral education in South Africa. The main point of the article is that the different understandings of the…

The hundredth Gentner Doctoral Student has started at CERN

CERN Multimedia

CERN Bulletin

2016-01-01

Almost ten years after the start of the programme in 2007, the hundredth Gentner Doctoral Student started his PhD at CERN.   The hundredth Gentner Doctoral Student, Christian Zimmer, in front of the AEgIS detector in the AD hall, where he will spend a significant portion of the next 3 years. In 2007, the German Gentner Doctoral Student Programme was established at CERN, named in honour of the celebrated nuclear physicist Wolfgang Gentner, President of the CERN Council from 1972-74. On 1 July 2016, the 100th Gentner Doctoral Student, Christian Zimmer, started his PhD at CERN, where he will work on setting up the sympathetic laser cooling of antiprotons at the AEgIS experiment. CERN’s Doctoral Student Programme has been running for many years, with 200 students currently enrolled. The Gentner programme is fully integrated into the general CERN Doctoral Student Programme, but is entirely funded by the German Federal Ministry of Education and Research (BMBF). The programme sponsors 30 to 40...

Exploring a shared leadership perspective for NHS doctors.

Science.gov (United States)

Willcocks, Stephen George; Wibberley, Gemma

2015-01-01

The purpose of this paper is to explore involving doctors in shared leadership. It examines the policies that have led to the focus on shared leadership and the implications for practice. This is a conceptual paper, examining policy developments and key literature to understand the move towards shared leadership. It focuses on UK NHS, and in particular doctors, although the concepts will be relevant to other disciplines in healthcare, and healthcare systems in other countries. This paper suggests that the shared-leadership approach for doctors has potential given the nature of clinical practice, the inherently collaborative nature of healthcare and the demands of new healthcare organisations. Health policy reform, generally, will mean that all doctors need to be engaged with leadership, albeit, perhaps, at different levels, and with different degrees of formality. Leadership will remain an important precondition for the success of the reforms. This is likely to be the case for other countries involved in healthcare reform. To highlight the benefits and barriers to shared leadership for doctors. Offers an alternative to traditional approaches to leadership.

Agency doctorates

Energy Technology Data Exchange (ETDEWEB)

NONE

1970-07-01

Mr. Wen-chuan Li of China has become the first student to obtain a doctor's degree as a result of research work carried out in the Agency. Mr. Li, who is 33, graduated as a Bachelor of Agriculture at Taiwan Provincial Chung-hsing University in 1960 and in 1966 was granted a fellowship to study mutations in plant breeding at the Agency's Seibersdorf Laboratory near Vienna, under the direction of Dr. Knut Mikaelsen, a professor of the University of Bergen. The Hochschule fur Bodenkultur of Vienna accepted the research as being suitable for a thesis and have now granted the degree of Doctor of Agriculture. The subject of the thesis was modifying factors influencing the mutagenic effects of alkylating agents as compared with ionizing radiations in barley. Alkylating agents are involved in the use of chemicals as a means of changing the characteristics of seeds to bring about changes aimed at improving the quality of crops. Mr. Li's work is regarded as a significant contribution to the understanding of the mechanics by which mutations are induced, to the efficient use of chemicals and ionizing radiations in practical applications, and to the efforts of the Agency in collaboration with the Food and Agriculture Organization to benefit food supplies. Mr. Li has now completed his fellowship with the Agency and has been appointed an Assistant Professor in Plant Breeding at Taiwan Provincial Chung-hsing University. The photograph, taken in the plastic hot house at Seibersdorf, shows him studying rice plants grown from seeds subjected to irradiation. Another noteworthy achievement is that of Mr. Karl-Franz Lacina, a security guard at the Agency's headquarters. At the age of 50 he has been accorded the degree of Doctor of Philosophy at Vienna University, the result of six years' work in his leisure time. The major subject was Arabic, with French and philosophy as supporting subject. (author)

Agency doctorates

International Nuclear Information System (INIS)

1970-01-01

Mr. Wen-chuan Li of China has become the first student to obtain a doctor's degree as a result of research work carried out in the Agency. Mr. Li, who is 33, graduated as a Bachelor of Agriculture at Taiwan Provincial Chung-hsing University in 1960 and in 1966 was granted a fellowship to study mutations in plant breeding at the Agency's Seibersdorf Laboratory near Vienna, under the direction of Dr. Knut Mikaelsen, a professor of the University of Bergen. The Hochschule fur Bodenkultur of Vienna accepted the research as being suitable for a thesis and have now granted the degree of Doctor of Agriculture. The subject of the thesis was modifying factors influencing the mutagenic effects of alkylating agents as compared with ionizing radiations in barley. Alkylating agents are involved in the use of chemicals as a means of changing the characteristics of seeds to bring about changes aimed at improving the quality of crops. Mr. Li's work is regarded as a significant contribution to the understanding of the mechanics by which mutations are induced, to the efficient use of chemicals and ionizing radiations in practical applications, and to the efforts of the Agency in collaboration with the Food and Agriculture Organization to benefit food supplies. Mr. Li has now completed his fellowship with the Agency and has been appointed an Assistant Professor in Plant Breeding at Taiwan Provincial Chung-hsing University. The photograph, taken in the plastic hot house at Seibersdorf, shows him studying rice plants grown from seeds subjected to irradiation. Another noteworthy achievement is that of Mr. Karl-Franz Lacina, a security guard at the Agency's headquarters. At the age of 50 he has been accorded the degree of Doctor of Philosophy at Vienna University, the result of six years' work in his leisure time. The major subject was Arabic, with French and philosophy as supporting subject. (author)

Token ring technology report

CERN Document Server

2013-01-01

Please note this is a Short Discount publication. This report provides an overview of the IBM Token-Ring technology and products built by IBM and compatible vendors. It consists of two sections: 1. A summary of the design trade-offs for the IBM Token-Ring. 2. A summary of the products of the major token-ring compatible vendors broken down by adapters and components, wiring systems, testing, and new chip technology.

Iron-Deficiency Anemia

Medline Plus

Full Text Available ... iron-rich foods, especially during certain stages of life when more iron is needed, such as childhood and pregnancy. Good sources of iron are meat, poultry, fish, and iron- ...

Talking to Your Doctor

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Full Text Available ... You Talking to Your Doctor Science Education Resources Community Resources Clear Health A–Z Publications List More ... & Compliance Grants News/Blog Contracts Loan Repayment More » ...

Talking With Your Doctor: MedlinePlus Health Topic

Science.gov (United States)

... Doctor (For Teens) (Nemours Foundation) Also in Spanish Working with doctors and nurses (Department of Health and Human Services, Office on Women's Health) Seniors Living with Multiple Health Problems: What Older Adults ...

Measurement of iron absorption from meals contaminated with iron

International Nuclear Information System (INIS)

Hallberg, L.; Bjoern-Rasmussen, E.

1981-01-01

A method is described to measure in vitro the extent of isotopic exchange between the native nonheme food iron and added inorganic reduction to radioiron tracer. The food is digested with pepsin and trypsin in the presence of radioiron. The exchangeability of food iron is calculated from the specific activity in the food and in an extract of bathophenantroline in isoamyl alcohol obtained after digesting this food. The precision and accuracy of the method is illustrated by two kinds of studies, those in which different amounts of contamination iron are added to a meal and those evaluating contamination iron in natural meals. The present method will make it possible to measure validly iron absorption from meals contaminated with unknown amounts of iron of unknown exchangeability with the extrinsic radioiron tracer

Prototype moving-ring reactor

International Nuclear Information System (INIS)

Smith, A.C. Jr.; Ashworth, C.P.; Abreu, K.E.

1982-01-01

We have completed a design of the Prototype Moving-Ring Reactor. The fusion fuel is confined in current-carrying rings of magnetically-field-reversed plasma (Compact Toroids). The plasma rings, formed by a coaxial plasma gun, undergo adiabatic magnetic compression to ignition temperature while they are being injected into the reactor's burner section. The cylindrical burner chamber is divided into three burn stations. Separator coils and a slight axial guide field gradient are used to shuttle the ignited toroids rapidly from one burn station to the next, pausing for 1/3 of the total burn time at each station. D-T- 3 He ice pellets refuel the rings at a rate which maintains constant radiated power

Perspectives of Nurses Pursuing Doctoral Degrees in Georgia: Implications for Recruitment.

Science.gov (United States)

Wheeler, Rebecca McCombs; Eichelberger, Lisa Wright

2017-08-01

Increasing the number of nurses with doctorates is a goal of the nursing profession. The Georgia Nursing Leadership Coalition developed a survey to understand the perspectives of nurses pursuing doctoral degrees in Georgia to improve recruitment and retention strategies. A 26-item online survey was distributed to all students enrolled in Georgia-based doctoral programs in nursing in spring 2014. One hundred fifty responses were received (54% response rate). Most students first seriously considered doctoral education during their master's programs or more than 5 years into practice. For most, obtaining a doctoral degree was a personal life goal. Work-life balance was the most significant barrier. Recruitment of nurses to doctoral programs should focus on messaging, timing, and highlighting the unique aspects of programs. Schools should work to reduce barriers. Understanding students' perspectives of doctoral education in nursing can improve recruitment strategies and increase the number of nurses graduating with doctorates in Georgia. [J Nurs Educ. 2017;56(8):466-470.]. Copyright 2017, SLACK Incorporated.

Iron in diet

Science.gov (United States)

... Reasonable amounts of iron are also found in lamb, pork, and shellfish. Iron from vegetables, fruits, grains, ... strawberries, tomatoes, and potatoes) also increase iron absorption. Cooking foods in a cast-iron skillet can also ...

Polycomb Group Proteins RING1A and RING1B Regulate the Vegetative Phase Transition in Arabidopsis

Directory of Open Access Journals (Sweden)

Jian Li

2017-05-01

Full Text Available Polycomb group (PcG protein-mediated gene silencing is a major regulatory mechanism in higher eukaryotes that affects gene expression at the transcriptional level. Here, we report that two conserved homologous PcG proteins, RING1A and RING1B (RING1A/B, are required for global H2A monoubiquitination (H2Aub in Arabidopsis. The mutation of RING1A/B increased the expression of members of the SQUAMOSA PROMOTER BINDING PROTEIN-LIKE (SPL gene family and caused an early vegetative phase transition. The early vegetative phase transition observed in ring1a ring1b double mutant plants was dependent on an SPL family gene, and the H2Aub status of the chromatin at SPL locus was dependent on RING1A/B. Moreover, mutation in RING1A/B affected the miRNA156a-mediated vegetative phase transition, and RING1A/B and the AGO7-miR390-TAS3 pathway were found to additively regulate this transition in Arabidopsis. Together, our results demonstrate that RING1A/B regulates the vegetative phase transition in Arabidopsis through the repression of SPL family genes.

Importance and benefits of the doctoral thesis for medical graduates

Science.gov (United States)

Giesler, Marianne; Boeker, Martin; Fabry, Götz; Biller, Silke

2016-01-01

Introduction: The majority of medical graduates in Germany complete a doctorate, even though a doctoral degree is not necessary for the practice of medicine. So far, little is known about doctoral candidates’ view on the individual benefit a doctoral thesis has for them. Consequently, this is the subject of the present investigation. Method: Data from surveys with graduates of the five medical faculties of Baden-Württemberg from the graduation years 2007/2008 (N=514) and 2010/2011 (N=598) were analysed. Results: One and a half years after graduating 53% of those interviewed had completed their doctorate. When asked about their motivation for writing a doctoral thesis, participants answered most frequently “a doctorate is usual” (85%) and “improvement of job opportunities” (75%), 36% said that an academic career has been their primary motive. Less than 10% responded that they used their doctoral thesis as a means to apply for a job. The proportion of graduates working in health care is equally large among those who have completed a thesis and those who have not. Graduates who pursued a thesis due to scientific interest are also currently more interested in an academic career and recognise more opportunities for research. An implicit benefit of a medical thesis emerged with regard to the self-assessment of scientific competences as those who completed a doctorate rated their scientific competencies higher than those who have not. Discussion: Although for the majority of physicians research interest is not the primary motivation for completing a doctorate, they might nevertheless achieve some academic competencies. For graduates pursuing an academic career the benefit of completing a medical thesis is more obvious. PMID:26958656

Importance and benefits of the doctoral thesis for medical graduates.

Science.gov (United States)

Giesler, Marianne; Boeker, Martin; Fabry, Götz; Biller, Silke

2016-01-01

The majority of medical graduates in Germany complete a doctorate, even though a doctoral degree is not necessary for the practice of medicine. So far, little is known about doctoral candidates' view on the individual benefit a doctoral thesis has for them. Consequently, this is the subject of the present investigation. Data from surveys with graduates of the five medical faculties of Baden-Württemberg from the graduation years 2007/2008 (N=514) and 2010/2011 (N=598) were analysed. One and a half years after graduating 53% of those interviewed had completed their doctorate. When asked about their motivation for writing a doctoral thesis, participants answered most frequently "a doctorate is usual" (85%) and "improvement of job opportunities" (75%), 36% said that an academic career has been their primary motive. Less than 10% responded that they used their doctoral thesis as a means to apply for a job. The proportion of graduates working in health care is equally large among those who have completed a thesis and those who have not. Graduates who pursued a thesis due to scientific interest are also currently more interested in an academic career and recognise more opportunities for research. An implicit benefit of a medical thesis emerged with regard to the self-assessment of scientific competences as those who completed a doctorate rated their scientific competencies higher than those who have not. Although for the majority of physicians research interest is not the primary motivation for completing a doctorate, they might nevertheless achieve some academic competencies. For graduates pursuing an academic career the benefit of completing a medical thesis is more obvious.

Importance and benefits of the doctoral thesis for medical graduates

Directory of Open Access Journals (Sweden)

Giesler, Marianne

2016-02-01

Full Text Available Introduction: The majority of medical graduates in Germany complete a doctorate, even though a doctoral degree is not necessary for the practice of medicine. So far, little is known about doctoral candidates’ view on the individual benefit a doctoral thesis has for them. Consequently, this is the subject of the present investigation.Method: Data from surveys with graduates of the five medical faculties of Baden-Württemberg from the graduation years 2007/2008 (N=514 and 2010/2011 (N=598 were analysed.Results: One and a half years after graduating 53% of those interviewed had completed their doctorate. When asked about their motivation for writing a doctoral thesis, participants answered most frequently “a doctorate is usual” (85% and “improvement of job opportunities” (75%, 36% said that an academic career has been their primary motive. Less than 10% responded that they used their doctoral thesis as a means to apply for a job. The proportion of graduates working in health care is equally large among those who have completed a thesis and those who have not. Graduates who pursued a thesis due to scientific interest are also currently more interested in an academic career and recognise more opportunities for research. An implicit benefit of a medical thesis emerged with regard to the self-assessment of scientific competences as those who completed a doctorate rated their scientific competencies higher than those who have not.Discussion: Although for the majority of physicians research interest is not the primary motivation for completing a doctorate, they might nevertheless achieve some academic competencies. For graduates pursuing an academic career the benefit of completing a medical thesis is more obvious.

Doctor-patient dialogue--basic aspect of medical consultation.

Science.gov (United States)

Murariu-Brujbu, Isabella Cristina; Macovei, Luana Andreea

2013-01-01

Family medicine is the specialty that provides ongoing primary medical care and improves the health status of the individual, of the family and of the community through preventive, educational, therapeutic and rehabilitation measures. The family doctor often makes the interdisciplinary synthesis, in a flexible manner, either alone or in most cases with interdisciplinary consultation. In the latter case, the family doctor initiates the team work and makes the final evaluation by using the longitudinal follow-up of the disease. The doctor-patient encounter represents the "confrontation" with the greatest moral weight, due to the complexity of the values involved, the status of the doctor in a society, and patient's involvement in decision making. The patient is a person who should be treated with respect, honesty, professionalism and loyalty, whatever the clinical status, severity of illness, mental competence or incompetence. A focus, on an international scale, is represented by the characteristics of a good doctor, family physician included, as the latter is the first link in the network of health services. Each model of consultation varies in a more or less subtle way in priorities assignment, and suggests slight differences regarding the role played by doctor and patient in their collaboration. The qualities of a good family physician include not only the strictly professional competences, that also apply to other medical specialties, but also duties, such as, clearly explaining to patients issues concerning their health, informing them about all the possible preventive measures of diseases, making a diagnosis, initiating and supervising a therapy. Medical responsibility lies at the crossroads between medical science and the conscience of the doctor.

49 CFR 192.489 - Remedial measures: Cast iron and ductile iron pipelines.

Science.gov (United States)

2010-10-01

... 49 Transportation 3 2010-10-01 2010-10-01 false Remedial measures: Cast iron and ductile iron... for Corrosion Control § 192.489 Remedial measures: Cast iron and ductile iron pipelines. (a) General graphitization. Each segment of cast iron or ductile iron pipe on which general graphitization is found to a...

Researches on the Piston Ring

Science.gov (United States)

Ehihara, Keikiti

1944-01-01

In internal combustion engines, steam engines, air compressors, and so forth, the piston ring plays an important role. Especially, the recent development of Diesel engines which require a high compression pressure for their working, makes, nowadays, the packing action of the piston ring far more important than ever. Though a number of papers have been published in regard to researches on the problem of the piston ring, none has yet dealt with an exact measurement of pressure exerted on the cylinder wall at any given point of the ring. The only paper that can be traced on this subject so far is Mr. Nakagawa's report on the determination of the relative distribution of pressure on the cylinder wall, but the measuring method adopted therein appears to need further consideration. No exact idea has yet been obtained as to how the obturation of gas between the piston and cylinder, the frictional resistance of the piston, and the wear of the cylinder wall are affected by the intensity and the distribution of the radial pressure of the piston ring. Consequently, the author has endeavored, by employing an apparatus of his own invention, to get an exact determination of the pressure distribution of the piston ring. By means of a newly devised ring tester, to which piezoelectricity of quartz was applied, the distribution of the radial pressure of many sample rings on the market was accurately determined. Since many famous piston rings show very irregular pressure distribution, the author investigated and achieved a manufacturing process of the piston ring which will exert uniform pressure on the cylinder wall. Temperature effects on the configuration and on the mean spring power have also been studied. Further, the tests were performed to ascertain how the gas tightness of the piston ring may be affected by the number or spring power. The researches as to the frictional resistance between the piston ring and the cylinder wall were carried out, too. The procedure of study, and

Iron status in Danish women, 1984-1994: a cohort comparison of changes in iron stores and the prevalence of iron deficiency and iron overload

DEFF Research Database (Denmark)

Milman, N.; Byg, K.E.; Ovesen, Lars

2003-01-01

Background and objectives: From 1954 to 1986, flour in Denmark was fortified with 30 mg carbonyl iron per kilogram. This mandatory enrichment of cereal products was abolished in 1987. The aim was to evaluate iron status in the Danish female population before and after abolishment of iron...... fortification. Methods: Iron status, serum ferritin and haemoglobin, was assessed in population surveys in 1983-1984 comprising 1221 Caucasian women (1089 non-blood-donors, 130 donors) and in 1993-1994 comprising 1261 women (1155 non-blood-donors, 104 donors) equally distributed in age cohorts of 40, 50, 60......, postmenopausal women had median ferritin of 75 mug/L and in 1994 of 93 mug/L (P iron stores (ferritin iron stores (ferritin less...

Work hours and sleep/wake behavior of Australian hospital doctors.

Science.gov (United States)

Ferguson, Sally A; Thomas, Matthew J W; Dorrian, Jillian; Jay, Sarah M; Weissenfeld, Adrian; Dawson, Drew

2010-07-01

The objective of the study was to describe the work and sleep patterns of doctors working in Australian hospitals. Specifically, the aim was to examine the influence of work-related factors, such as hospital type, seniority, and specialty on work hours and their impact on sleep. A total of 635 work periods from 78 doctors were analyzed together with associated sleep history. Work and sleep diary information was validated against an objective measure of sleep/wake activity to provide the first comprehensive database linking work and sleep for individual hospital doctors in Australia. Doctors in large and small facilities had fewer days without work than those doctors working in medium-sized facilities. There were no significant differences in the total hours worked across these three categories of seniority; however, mid-career and senior doctors worked more overnight and weekend on-call periods than junior doctors. With respect to sleep, although higher work hours were related to less sleep, short sleeps (work) were observed at all levels of prior work history (including no work). In this population of Australian hospital doctors, total hours worked do impact sleep, but the pattern of work, together with other nonwork factors are also important mediators.

Doctors' voices in patients' narratives: coping with emotions in storytelling.

Science.gov (United States)

Lucius-Hoene, Gabriele; Thiele, Ulrike; Breuning, Martina; Haug, Stephanie

2012-09-01

To understand doctors' impacts on the emotional coping of patients, their stories about encounters with doctors are used. These accounts reflect meaning-making processes and biographically contextualized experiences. We investigate how patients characterize their doctors by voicing them in their stories, thus assigning them functions in their coping process. 394 narrated scenes with reported speech of doctors were extracted from interviews with 26 patients with type 2 diabetes and 30 with chronic pain. Constructed speech acts were investigated by means of positioning and narrative analysis, and assigned into thematic categories by a bottom-up coding procedure. Patients use narratives as coping strategies when confronted with illness and their encounters with doctors by constructing them in a supportive and face-saving way. In correspondence with the variance of illness conditions, differing moral problems in dealing with doctors arise. Different evaluative stances towards the same events within interviews show that positionings are not fixed, but vary according to contexts and purposes. Our narrative approach deepens the standardized and predominantly cognitive statements of questionnaires in research on doctor-patient relations by individualized emotional and biographical aspects of patients' perspective. Doctors should be trained to become aware of their impact in patients' coping processes.

Talking to Your Doctor

Medline Plus

Full Text Available ... Trials and You Talking to Your Doctor Science Education Resources Community Resources Clear Health A–Z Publications List More » Search Health Topics Quick Links MedlinePlus ...

Generation of stable mixed-compact-toroid rings by inducing plasma currents in strong E rings

International Nuclear Information System (INIS)

Jayakumar, R.; Taggart, D.P.; Parker, M.R.; Fleischmann, H.H.

1989-01-01

In the RECE-Christa device, hybrid-type compact toroid rings are generated by inducing large toroidal plasma currents I rho in strong electron rings using a thin induction coil positioned along the ring axis. Starting from field-reversal values δ ο = 50 - 120 percent of the original pure fast-electron ring, the induced plasma current I rho raises δ to a maximum value of up to 240 percent with I rho contributing more than 50 percent of the total ring current. Quite interestingly, the generated hybrid compact toroid configurations appear gross-stable during the full I rho pulse length (half-amplitude width about 100 μs)

Drivers and Interpretations of Doctoral Education Today: National Comparisons

DEFF Research Database (Denmark)

Andres, Lesley; Bengtsen, Søren Smedegaard; Castano, Liliana Del Pilar Gallego

2015-01-01

In the last decade, doctoral education has undergone a sea change with several global trends increasingly apparent. Drivers of change include massification and professionalization of doctoral education and the introduction of quality assurance systems. The impact of these drivers, and the forms...... that they take, however, are dependent on doctoral education within a given national context. This paper is frontline in that it contributes to the literature on doctoral education by examining the ways in which these global trends and drivers are being taken up in policies and practices by various countries. We...... do so by comparing recent changes in each of the following countries: Canada, Colombia, Denmark, Finland, the UK, and the USA. Each country case is based on national education policies, policy reports on doctoral education (e.g., OECD and EU policy texts), and related materials. We use the same...

Magnetization of two coupled rings

International Nuclear Information System (INIS)

Avishai, Y; Luck, J M

2009-01-01

We investigate the persistent currents and magnetization of a mesoscopic system consisting of two clean metallic rings sharing a single contact point in a magnetic field. Many novel features with respect to the single-ring geometry are underlined, including the explicit dependence of wavefunctions on the Aharonov-Bohm fluxes, the complex pattern of two-fold and three-fold degeneracies, the key role of length and flux commensurability, and in the case of commensurate ring lengths the occurrence of idle levels which do not carry any current. Spin-orbit interactions, induced by the electric fields of charged wires threading the rings, give rise to a peculiar version of the Aharonov-Casher effect where, unlike for a single ring, spin is not conserved. Remarkably enough, this can only be realized when the Aharonov-Bohm fluxes in both rings are neither integer nor half-integer multiples of the flux quantum

Iron-Deficiency Anemia

Medline Plus

Full Text Available ... effects such as a bad metallic taste, vomiting, diarrhea, constipation, or upset stomach. Your doctor may be ... effects such as a bad metallic taste, vomiting, diarrhea, constipation, or upset stomach. Your doctor may be ...

Iron-Deficiency Anemia

Medline Plus

Full Text Available ... stomach. Your doctor may be able to recommend options such as taking your supplements with food, lowering ... stomach. Your doctor may be able to recommend options such as taking your supplement with food, lowering ...

Iron-Deficiency Anemia

Medline Plus

Full Text Available ... such as a bad metallic taste, vomiting, diarrhea, constipation, or upset stomach. Your doctor may be able ... such as a bad metallic taste, vomiting, diarrhea, constipation, or upset stomach. Your doctor may be able ...

Iron Dextran Injection

Science.gov (United States)

Iron dextran injection is used to treat iron-deficiency anemia (a lower than normal number of red blood cells ... treated with iron supplements taken by mouth. Iron dextran injection is in a class of medications called ...

Ear tube surgery - what to ask your doctor

Science.gov (United States)

What to ask your doctor about ear tube surgery; Tympanostomy - what to ask your doctor; Myringotomy - what ... other treatments? What are the risks of the surgery? Is it safe to wait before getting ear ...

High blood pressure - what to ask your doctor

Science.gov (United States)

What to ask your doctor about high blood pressure; Hypertension - what to ask your doctor ... problems? What medicines am I taking to treat high blood pressure? Do they have any side effects? What should ...

IN URGENT NEED OF A DOCTOR

CERN Multimedia

Medical Service

2002-01-01

GENEVA EMERGENCY SERVICES GENEVA AND VAUD 144 FIRE BRIGADE 118 POLICE 117 CERN FIREMEN 767-44-44 ANTI-POISONS CENTRE Open 24h/24h 01-251-51-51 Patient not fit to be moved, call family doctor, or: GP AT HOME, open 24h/24h 748-49-50 Association Of Geneva Doctors Emergency Doctors at home 07h-23h 322 20 20 Patient fit to be moved: HOPITAL CANTONAL CENTRAL 24 Micheli-du-Crest 372-33-11 ou 382-33-11 EMERGENCIES 382-33-11 ou 372-33-11 CHILDREN'S HOSPITAL 6 rue Willy-Donzé 372-33-11 MATERNITY 32 bvd.de la Cluse 382-68-16 ou 382-33-11 OPHTHALMOLOGY 22 Alcide Jentzer 382-33-11 ou 372-33-11 MEDICAL CENTRE CORNAVIN 1-3 rue du Jura 345 45 50 HOPITAL DE LA TOUR Meyrin EMERGENCIES 719-61-11 URGENCES PEDIATRIQUES 719-61-00 LA TOUR MEDICAL CENTRE 719-74-00 European Emergency Call 112 FRANCE EMERGENCY SERVICES 15 FIRE BRIGADE 18 POLICE 17 CERN FIREMEN AT HOME 00-41-22-767-44-44 ANTI-POISONS CENTRE Open 24h/24h 04-72-11-69-11 All doctors will come to your home. Cal...

The hospital doctor of today - still continuously on duty.

Science.gov (United States)

Hertzberg, Tuva Kolstad; Skirbekk, Helge; Tyssen, Reidar; Aasland, Olaf Gjerløw; Rø, Karin Isaksson

2016-10-01

Norwegian hospital doctors emphasise the value of working hard and efficiently and of a high degree of attendance in the workplace. This helps establish social norms that guide behaviour within the professional culture. It is important to examine what consequences these values may entail when the doctor also needs to cater to his or her own needs. We conducted eight focus-group interviews and three individual interviews among a total of 48 senior consultants and specialty registrars working in the areas of surgery, psychiatry and internal medicine. Total N = 48; 56  % women. The interviews were analysed with the aid of systematic text condensation. When Norwegian hospital doctors wish to appear as good doctors, they see that this entails consequences for the interrelationships with colleagues, the management and the work-life balance. Conflicts of interest arose between senior consultants and specialty registrars. Management initiatives to deal with absence, adaptation of the job to the life stage of each individual doctor and increased management involvement among doctors were among the measures proposed. Better mutual knowledge between doctors and management with regard to each other’s values and responsibilities could constitute key premises for structural changes, for example in terms of better planning of leaves of absence and opportunities for adaptation of work schedules to the life stage of the persons concerned.

Radioactive gold ring dermatitis

International Nuclear Information System (INIS)

Miller, R.A.; Aldrich, J.E.

1990-01-01

A superficial squamous cell carcinoma developed in a woman who wore a radioactive gold ring for more than 30 years. Only part of the ring was radioactive. Radiation dose measurements indicated that the dose to basal skin layer was 2.4 Gy (240 rad) per week. If it is assumed that the woman continually wore her wedding ring for 37 years since purchase, she would have received a maximum dose of approximately 4600 Gy

Analytical model for double split ring resonators with arbitrary ring width

DEFF Research Database (Denmark)

Zhurbenko, Vitaliy; Jensen, Thomas; Krozer, Viktor

2008-01-01

For the first time, the analytical model for a double split ring resonator with unequal width rings is developed. The proposed models for the resonators with equal and unequal widths are based on an impedance matrix representation and provide the prediction of performance in a wide frequency range...

Profesor Doctor Fernando Sonnet: In Memoriam

Directory of Open Access Journals (Sweden)

Alberto José Figueras

2016-07-01

Full Text Available Recuerdo del Profesor Doctor Fernando Sonnet, destacado docente e investigador, en las áreas de economía agraria, economía de empresas y microeconomía, en el Instituto de Economía y Finanzas de la Facultad de Ciencias Económicas, Universidad Nacional de Córdoba.Palabras Clave: Fernando H. Sonnet; Recuerdo; Universidad Nacional de Córdoba.Código JEL: B32. Professor Doctor Fernando Sonnet: In MemoriamAbstractRemembrance of Professor Doctor Fernando Sonnet, a senior lecturer and researcher in the areas of agricultural economics, business economics and microeconomics at the Institute of Economics and Finance at the Faculty of Economics, Universidad Nacional de Córdoba.Keywords: Fernando H. Sonnet; Memory; Universidad Nacional de CórdobaJEL Classification: B32.

Iron-Deficiency Anemia

Medline Plus

Full Text Available ... to moderate iron-deficiency anemia, or red blood cell transfusion for severe iron-deficiency anemia. You may ... body needs iron to make healthy red blood cells. Iron-deficiency anemia usually develops over time because ...

Iron-Deficiency Anemia

Medline Plus

Full Text Available ... you are diagnosed with iron-deficiency anemia. Risk Factors You may have an increased risk for iron- ... iron-deficiency anemia if you have certain risk factors , including pregnancy. To prevent iron-deficiency anemia, your ...

Iron-Deficiency Anemia