bluuebunny/crossref_metadata_2025_split huggingface dataset:
Improving maternal mortality reporting at the community level with a 4‐question modified reproductive age mortality survey (RAMOS)
Authors: Geynisman Julia , Latimer Andrew , Ofosu Anthony , Anderson Frank W.J. 
Published: April 2011

AbstractObjectiveTo investigate the identification of maternal deaths at the community level using the reproductive age mortality survey (RAMOS) in all households in which a women of reproductive age (WRA) died and to determine the most concise subset of questions for identifying a pregnancy‐related death for further investigation.MethodsA full RAMOS survey was conducted with the families of 46 deceased WRA who died between 2005 and July 2009 and was compared with the cause of death confirmed by the maternal mortality review committee to establish the number of maternal mortalities. The positive predictive value (PPV) of each RAMOS question for identifying a maternal death was determined.ResultsCompared with years of voluntary reporting, active surveillance for maternal deaths doubled their identification. In addition, 4 questions from the full RAMOS have the highest PPV for a maternal death including the question: “Was she pregnant within the last 6 weeks?” which had a 100% PPV and a 100% negative predictive value.ConclusionActive identification of maternal mortality at the community level by using a 4‐question modified RAMOS that is systematically administered in the local language by health workers can increase understanding of the extent of maternal mortality in rural Ghana.
The use of quality control performance charts to analyze cesarean delivery rates nationally
Authors: Turner Michael J. 
Published: April 2011

AbstractObjectiveTo examine the use of quality control performance charts to analyze cesarean rates nationally.MethodsInformation on cesarean rates was obtained for all 19 Irish maternity hospitals receiving state funding in 2009. All women who underwent cesarean delivery of a live or stillborn infant weighing 500 g or more between January 1 and December 31 were included. Deliveries were classified as elective or emergency. Individual hospitals were not identified in the analysis.ResultsThe mean rates per hospital of elective and emergency cesarean were 12.9 ± 2.6% (n = 9337) and 13.8 ± 3.0% (n = 9989), respectively—giving an overall mean rate of 26.7 ± 4.2% (n = 19326) per hospital. Cesarean rates were normally distributed. Using a quality control performance chart with a cutoff 2 standard deviations from the mean, 1 hospital was above the normal range for both total and elective cesareans, indicating that its pre‐labor obstetric practices warrant clinical review. Another hospital had a mean emergency cesarean rate above the normal range, indicating that its labor ward practices warrant review.ConclusionQuality control performance charts can be used to analyze cesarean rates nationally and, thus, to identify hospitals at which obstetric practices should be reviewed.
Nasopharyngeal carcinoma with pericardial metastasis
Authors: Chen Shang‐Wen , Chen Chao‐Hsun , Tsao Chao‐Jung , Huang Wen‐Tsung , Chuang Shih‐Sung 
Published: April 2011

AbstractNasopharyngeal carcinoma (NPC) is prevalent in Taiwan and is characterized by a high frequency of nodal metastasis. The most common organs with distal metastases are the bones, lungs, and liver, with extremely rare cases to the pericardium. Herein, we report a rare case with NPC who presented with dyspnea and orthopnea. Serial studies, including pericardial biopsy, revealed NPC with pericardial metastasis and pericardial effusion. The tumor cells of both the original and metastatic tumors were positive for Epstein–Barr virus by in situ hybridization. This is the first histologically confirmed case of NPC with pericardial metastasis.
Psychophysiological responses to pain stimulation and cognitive tasks in female temporomandibular disorder patients
Authors: Mohn Christine , Vassend Olav , Knardahl Stein 
Published: April 2011

Abstract

Background and purpose
Psychophysiological factors may contribute to the development of temporomandibular disorders (TMD). Both local orofacial and systemic responses have been investigated. However, most studies have concentrated on physiological responding during cognitive challenges, while responses during painful tasks may be highly relevant for the development of chronic pain conditions. Moreover, the relationship between experimental challenges and physiological responding may be influenced by affective responses during the experimental tasks, an issue not often considered in the literature.

Methods
This study compared electromyography (EMG) of the left masseter and left trapezius muscles, orofacial and digital skin blood-flow (SBF), mean arterial pressure (MAP), and heart rate (HR) at rest, during orofacial isometric contraction, electrocutaneous pain stimulation of the left hand, pressure pain stimulation of the masseter muscle and the sternum, and three cognitive tasks (reading aloud, a simulated job interview, and visuomotoric tracking). The participants were 25 TMD patients and 25 matched pain-free controls, all females. Affective responses were assessed with the State part of the State-Trait Personality Inventory and with Visual Analogue Scales.

Results
Masseter EMG levels were significantly lower in the TMD group relative to the control group during jaw contraction, pressure pain stimulation, the relaxation periods, and cognitive tasks. SBF, MAP, and HR responses were largely similar in the two groups, with SBF responses to pain stimulation evident at lower levels of stimulation than previously found. The TMD patients reported significantly higher levels of negative affect during the experiment.

Conclusions and implications
The low EMG responses in the TMD group may be taken in support of the Pain Adaptation Model of musculoskeletal pain, in which reduced muscular activity serves to protect a painful area. However, it may also be supportive of the Integrated Pain Adaptation Model, where higher central nervous structures influence local muscular output. The group similarities in systemic physiological responding in combination with the elevated levels of negative state affect in the TMD patients confirm previous reports of psychosocial differences being more reliable indicators of TMD than generalized physiological responding.
A 2000-yr-long multi-proxy lacustrine record from eastern Baffin Island, Arctic Canada reveals first millennium AD cold period
Authors: Thomas Elizabeth K. , Briner Jason P. , Axford Yarrow , Francis Donna R. , Miller Gifford H. , Walker Ian R. 
Published: April 2011

AbstractWe generate a multi-proxy sub-centennial-scale reconstruction of environmental change during the past two millennia from Itilliq Lake, Baffin Island, Arctic Canada. Our reconstruction arises from a finely subsectioned 210Pb- and 14C-dated surface sediment core and includes measures of organic matter (e.g., chlorophyll a; carbon–nitrogen ratio) and insect (Diptera: Chironomidae) assemblages. Within the past millennium, the least productive, and by inference coldest, conditions occurred ca. AD 1700–1850, late in the Little Ice Age. The 2000-yr sediment record also reveals an episode of reduced organic matter deposition during the 6th–7th century AD; combined with the few other records comparable in resolution that span this time interval from Baffin Island, we suggest that this cold episode was experienced regionally. A comparable cold climatic episode occurred in Alaska and western Canada at this time, suggesting that the first millennium AD cold climate anomaly may have occurred throughout the Arctic. Dramatic increases in aquatic biological productivity at multiple trophic levels are indicated by increased chlorophyll a concentrations since AD 1800 and chironomid concentrations since AD 1900, both of which have risen to levels unprecedented over the past 2000 yr.
‘WE DO IT SO THAT WE WILL BE MEN’: MASCULINITY POLITICS IN COLONIAL NAMIBIA, 1915–49
Authors: MCCULLERS MOLLY 
Published: April 2011

ABSTRACTThis article examines struggles for masculinity among Herero elders, South African colonial administrators, and the Otruppa, a Herero youth society that appropriated a German military aesthetic, in Namibia between 1915 and 1949. As previous scholars have argued, masculinities are mutually constituted through competitions for authority, though dominance is rarely achieved. Such contestations were integral to processes of Herero societal reconstruction following German rule and during South African colonial state formation, beginning in 1915. Different generational experiences of colonial violence and the destruction of the material resources that undergirded elders' authority led to conflicts between elders and youths over how to define Herero masculinity and negotiate authority in a rapidly changing colonial milieu.
THE ADJUDICATION OF HOMICIDE IN COLONIAL GHANA: THE IMPACT OF THE KNOWLES MURDER CASE
Authors: GOCKING ROGER 
Published: April 2011

ABSTRACTIn keeping with the law in place in the Colony of Ashanti in 1928, Dr Benjamin Knowles was tried and convicted for the murder of his wife without the benefit of a jury trial or the assistance of legal counsel. His trial and sentencing to death created outrage in both colonial Ghana and the metropole, and placed a spotlight on the adjudication of capital crimes in the colony. Inevitably, there were calls for reform of a system that could condemn an English government official to death without the benefit of the right to trial by a jury of his peers and counsel of his choice. Shortly after the Knowles trial, the colonial government did open up Ashanti to lawyers, and introduced other changes in the administration of criminal justice, but continued to refuse the introduction of jury trial. Nevertheless, the lasting impact of the Knowles trial was to make criminal adjudication in Ashanti, if anything, more lenient than the other area of colonial Ghana, the Gold Coast Colony.
A FALSE START: BETWEEN WAR AND PEACE IN THE SOUTHERN SUDAN, 1956–62
Authors: ROLANDSEN ØYSTEIN H. 
Published: April 2011

ABSTRACTHistorians usually trace the start of the first civil war in the Southern Sudan to the Torit mutiny of 1955. However, organized political violence did not reach the level of civil war until 1963. This article argues that 1955–62 was a period of increasing political tension, local low-intensity violence, and social and economic stagnation. It shows how these conditions influenced the attitudes of government officials, informed the policies that they pursued, and made a Southern insurgency likely. This historical analysis helps explain why a full-scale civil war began in late 1963 and why it was not avoided.
DETERMINANTS OF TERRITORIAL EXOGAMY IN FRIULI (NORTH-EAST ITALY) IN THE SECOND HALF OF THE NINETEENTH CENTURY
Authors: FORNASIN ALESSIO 
Published: April 2011

SummaryThe aim of this study was to identify the characteristics of individuals who formed exogamic marriages in the Friuli region (north-east Italy) during the second half of the 19th century. Logistic regression models were devised to measure the influence of the determinants of exogamic marriage, taking into account not only variables related to context but also spouses' economic, social and cultural characteristics. The determinants of exogamic marriage differ for men and women, and also vary by region due to differences in geographical mobility and size of the marriage market. The majority of exogamic spouses belong to one of two categories: either older individuals, often, especially in the case of men, with a previous marriage; or the upper social classes.
Comparison of auditory electrophysiological responses in normal-hearing patients with and without tinnitus
Authors: Singh S , Munjal S K , Panda N K 
Published: April 2011

AbstractIntroduction:Tinnitus is a disturbing symptom and is often the main reason for otology referral. It is usually associated with hearing loss of varying aetiology, and is thought to begin in the cochlea, with later abnormal central activity. We hypothesise that tinnitus without hearing loss may be caused by central and subcortical abnormalities and altered outer hair cell function.Aim:To compare the auditory brainstem responses, middle latency responses and otoacoustic emissions in normal-hearing individuals with and without tinnitus.Methodology:The audiological test results of 25 normal hearing subjects with tinnitus (age 18–45 years) were determined, and compared with those of a control group.Results:A statistically significant difference was found between study group tinnitus earsvscontrol group ears, as regards wave I latency prolongation, shortening of wave V and absolute I–III and I–V interpeak latency, enlargement of wave Na and Pa amplitude, and distortion product and transient evoked otoacoustic emission signal-to-noise ratios. There was no statistically significant difference between unilateralvsbilateral tinnitus ears.Conclusion:The pathogenesis and optimum management of tinnitus are still unclear. It often occurs with primary ear disease, usually associated with hearing loss, but may occur in patients with normal hearing. Observed changes in auditory brainstem and middle latency responses indicate central auditory alterations. Tinnitus involves both peripheral and central activity, and complete audiological and neurophysiological investigation is required. Management should be based on both audiological and neurophysiological findings.
Taxonomy and distribution of the genusKolga(Elpidiidae: Holothuroidea: Echinodermata)
Authors: Rogacheva Antonina 
Published: April 2011

The genusKolgahas been revised.Kolga nana(Théel, 1879) is re-established and a new species,Kolga kamchaticasp. nov., is described. The new species was found in the Kurile–Kamchatka Trench at 6225–6236 m water depth. The three species ofKolga, K. hyalina, K. nanaandK. kamchatica, differ mainly in morphology of tube feet ossicles. For the first time, swimming activity is reported inK. nana.
A Cr unimodal map with an arbitrary fast growth of the number of periodic points
Authors: KALOSHIN V. , KOZLOVSKI O. S. 
Published: April 2011

AbstractIn this paper we present a surprising example of a Cr unimodal map of an interval f:I→I whose number of periodic points Pn(f)=∣{x∈I:fnx=x}∣ grows faster than any ahead given sequence along a subsequence nk=3k. This example also shows that ‘non-flatness’ of critical points is necessary for the Martens–de Melo–van Strien theorem [M. Martens, W. de Melo and S. van Strien. Julia–Fatou–Sullivan theory for real one-dimensional dynamics. Acta Math.168(3–4) (1992), 273–318] to hold.
Relation between Euler–Bernoulli equation and contemporary knowledge in robotics
Authors: Filipovic Mirjana 
Published: April 2011

SUMMARYThe motivation for this work is the state of modern structural mechanisms that are characterized by growing complexity and ever-increasing demands for rapid and accurate motion. These contradictory requirements are often achieved according to easier and easier structures characterized by flexibility segments. In most of cases, the elasticity of structures appears as an obstacle for a precise and rapid control of motion. The aim of this paper is to explore ways of implementation of structural properties of elasticity with the application of high fidelity models during synthesis and analysis of complex mechanisms. Precisely, the aim is to explore the possibility of using Euler–Bernoulli equation, if not in its original form, then to the same extent with the use of modern knowledge in robotics (based on the knowledge of classical mechanics), and to examine the affordability and confirmation of the method through simulation results for a typical robotic configuration.
A new geometric method for singularity analysis of spherical mechanisms
Authors: Zarkandi Soheil 
Published: April 2011

SUMMARYFinding singular configurations (singularities) has an important role during the design, trajectory planning, and control stages of mechanisms because in these configurations, the instantaneous kinematics is locally undetermined. In this paper, a systematic method is presented to obtain singular configurations of spherical mechanisms with input and output links. The method extends the use of instantaneous poles to singularity analysis of spherical mechanisms and offers geometric conditions for any type of singularities occurring in these mechanisms.
In the footsteps of their fathers? Occupational following among Swedish tobacco workers
Authors: KARLSSON TOBIAS , STANFORS MARIA 
Published: April 2011

ABSTRACTThis article explores the role of kinship in the Swedish tobacco industry of 1898, making use of rich data that cover the entire industry and include both men and women. The focus is on the role of families in labour recruitment, which is often claimed to have been important. In this case, however, it was not the norm to have a father in the same industry. Occupational following was clearly a gendered phenomenon. To follow in the footsteps of fathers was more common among young men than among other groups of workers, and occupational following was associated with higher earnings for male but not for female workers.
Ownership of mines and taxation in Castilian laws, from the middle ages to the early modern period: the decisive influence of the sovereign in the history of mining
Authors: GRAULAU JEANNETTE 
Published: April 2011

ABSTRACTSovereign ownership of mines and taxation were fundamental principles governing the mining economy of the territories of the Castilian crown during the medieval period. Ownership of mines meant that mineral wealth, discovered or undiscovered, belonged to the crown estate. Only the sovereign could grant mining rights to ‘private’ persons and impose mineral taxation. Particularly during the last three centuries of the Reconquista (thirteenth to fifteenth centuries), these principles were used to unify the situation in those territories falling under the sway of a sovereign with expansionist ambitions. Increasing globalisation of the metal trade in the thirteenth century and the formation of capital markets in Europe firmly put the Castilian crown in competition with other economic agents aiming to win a monopoly in metallic wealth. Castile's mining laws aspired to solve the ensuing tension by attracting merchant capital to the mines, aiming to absorb the comparative advantages of mining capital. In a protracted process, the mineral laws of the sixteenth century were a testimony to the decisive influence of the sovereign in the history of mining.
Flow-sensitive four-dimensional magnetic resonance imaging facilitates and improves the accurate diagnosis of partial anomalous pulmonary venous drainage
Authors: Nordmeyer Sarah , Berger Felix , Kuehne Titus , Riesenkampff Eugénie 
Published: April 2011

AbstractObjectivesTo assess if flow-sensitive four-dimensional velocity-encoded cine magnetic resonance imaging adds value in diagnosing patients with suspected partial anomalous pulmonary venous drainage.MethodsIn six patients with echocardiographically suspected partial anomalous pulmonary venous drainage, anatomy was evaluated using standard magnetic resonance imaging including angiography. Functional analysis included shunt calculations from flow measurements. We used four-dimensional velocity-encoded cine magnetic resonance imaging for visualisation of maldraining pulmonary veins and quantification of flow via the maldraining veins and interatrial communications, if present.ResultsIn all patients, the diagnosis of partial anomalous pulmonary venous drainage was confirmed by standard magnetic resonance imaging. Shunt volumes ranged from 1.4:1 to 4.7:1. Drainage sites were the superior caval vein (n = 5) or the vertical vein (n = 1). Multiple maldraining pulmonary veins were found in three patients. Pulmonary arteries and veins could be clearly distinguished by selective visualisation using four-dimensional velocity-encoded cine magnetic resonance imaging. Flow measured individually in maldraining pulmonary veins in six patients and across the interatrial communication in three patients revealed a percentage of the overall shunt volume of 30–100% and 58–70%, respectively.ConclusionSelective visualisation of individual vessels and their flow characteristics by four-dimensional velocity-encoded cine magnetic resonance imaging facilitates in distinguishing adjacent pulmonary arteries and veins and thus improves the accurate diagnosis of maldraining pulmonary veins. By detailed quantification of shunt volumes, additional information for planning of treatment strategies is provided. This method adds clinical value and might replace contrast-enhanced magnetic resonance angiography in these patients in the future.
The use of Arginine Vasopressin in neonates following the Norwood procedure
Authors: Burton Grant L. , Kaufman Jon , Goot Benjamin H. , da Cruz Eduardo M. 
Published: April 2011

AbstractBackgroundFollowing the Norwood palliation, neonates may require an escalation of inotropic and vasoactive support. Arginine Vasopressin may be uniquely useful in supporting this population.Materials and MethodsA retrospective evaluation of neonates at this institution between November, 2007 and October, 2010 who received Arginine Vasopressin following the Norwood procedure. Data were recorded from the patient records at one hour prior to, and then 1, 2, 3, 4, 6, and 24 hours following Arginine Vasopressin initiation.ResultsWe included 28 neonates. The mean dose of Arginine Vasopressin was 0.0005 plus or minus 0.0003 units per kilogram per minute. There was an early response (less than 6 hours) characterised by an 8% increase in systolic blood pressure (p = 0.0004), a 100% increase in urine output (p = 0.02), and a 29% decrease in total fluid administration (p = 0.04). The late response (at 24 hours) revealed further increases in systolic blood pressure and urine output as well as a 53% decrease in serum lactate (p = 0.007) and increase in arterial pH from 7.36 to 7.45 (p less than 0.0001). These changes were not accompanied by increases in heart rate or inotrope score.ConclusionsThe initiation of Arginine Vasopressin in post-operative Norwood patients was temporally associated with an improvement in markers of perfusion including systolic blood pressure, urine output, lactate, and pH. Further studies are required to ascertain the efficacy of Arginine Vasopressin in this population.