bluuebunny/crossref_metadata_2025_split huggingface dataset:
Wet mount microscopy reflects functional vaginal lactobacillary flora better than Gram stain
Authors: Donders Gilbert G G , Vereecken Annie , Dekeersmaecker Alfons , Van Bulck Ben , Spitz Bernard 
Published: July 2002

Aim—The status of vaginal lactobacillary flora, an indicator of possible genital infection and pregnancy complications, can be assessed on wet mount or Gram stained specimens. The former is quick, the latter more routine. The accuracy of the two preparative techniques to detect normal vaginal lactobacillary microflora was compared for 646 patients. The effect of delay in transport medium before Gram staining was also investigated.Methods—Patients presented with infectious vaginitis or for a routine prenatal visit. After placement of a speculum, duplicate smears were taken from the upper vaginal vault and examined fresh or after Gram staining. Lactobacillary grades from both methods were compared with lactate concentration in vaginal rinses. In a subgroup of 238 patients, Gram staining was performed both on fresh smears and those that had been transported in Stuart's growth medium.Results—Higher lactobacillary grades (more disrupted flora) were diagnosed 2.9 times more frequently on Gram stained specimens than on wet mounts (p < 0.0001), a difference even more pronounced after transport in Stuart's medium (relative risk, 4.2; p < 0.0001). Lactobacillary grades assessed on wet mounts correlated better with vaginal lactate concentration than those assessed on Gram stains.Conclusions—Easier recognition of lactobacillary morphotypes on wet mounts than on Gram stains might result from the loss of lactobacilli by the process of fixation or Gram staining. Wet mount microscopy of vaginal smears for assessment of lactobacillary grades, rather than Gram staining, is strongly recommended.
Occupational health research priorities in Malaysia: a Delphi study
Authors: Sadhra S , Beach J R , Aw T-C , Sheikh-Ahmed K 
Published: July 2002

OBJECTIVESAs part of a consultancy project on occupational health, the Delphi method was used to identify research priorities in occupational health in Malaysia.METHODSParticipation was sought from government ministries, industry, and professional organisations, and university departments with an interest in occupational and public health. Two rounds of questionnaires resulted in a final list of priorities, with noticeable differences between participants depending on whether they worked in industry or were from government organisations.RESULTSThe participation rate of 71% (55 of 78) was obtained for the first questionnaire and 76% (72 of 95) for the second questionnaire. The participants identified occupational health problems for specific groups and industries as the top research priority area (ranked as top priority by 25% of participants). Ministry of Health participants placed emphasis on healthcare workers (52% ranking it as top priority), whereas those from industry identified construction and plantation workers as groups, which should be accorded the highest priority. Evaluation of research and services was given a low priority.CONCLUSIONSThe priorities for occupational health determined with the Delphi approach showed differences between Malaysia, a developing country, and findings from similar European studies. This may be expected, as differences exist in stages of economic development, types of industries, occupational activities, and cultural attitudes to occupational health and safety. Chemical poisonings and workplace accidents were accorded a high priority. By contrast with findings from western countries, workplace psychosocial problems and musculoskeletal injuries were deemed less important. There also seemed to be greater emphasis on adopting interventions for identified problems based on experience in other countries rather than the need to evaluate local occupational health provisions.
Parkinsonism and occupational exposure to pesticides
Authors: Engel L S , Checkoway H , Keifer M C , Seixas N S , Longstreth W T , Scott K C , Hudnell K , Anger W K , Camicioli R 
Published: July 2002

OBJECTIVETo examine the risk of parkinsonism related to lifetime occupational exposure to pesticides among a cohort of men, mostly orchardists, in Washington State.METHODSAll 310 subjects in this study had previously participated in a cohort study of men occupationally exposed to pesticides. Subjects were given a structured neurological examination and completed a self administered questionnaire which elicited detailed information on pesticide (insecticide, herbicide, and fungicide) use throughout their working careers. Demographic characteristics were also sought. Subjects had a mean age of 69.6 years (range 49–96, SD 8.1). There were 238 (76.8%) subjects who reported some occupational exposure to pesticides, whereas 72 (23.2%) reported none. Parkinsonism was defined by the presence of two or more of rest tremor, rigidity, bradykinesia, and impairment of postural reflexes in subjects not on antiparkinsonian medication, or the presence of at least one sign if they were on such medication. Parkinson's disease was not studied explicitly because of the difficulty in distinguishing it from other parkinsonian syndromes. A generalised linear model was used to estimate prevalence ratios (PRs) for parkinsonism relative to history of farming, pesticide use, and use of well water.RESULTSA PR of 2.0 (95% confidence interval (95% CI) 1.0 to 4.2) was found for subjects in the highest tertile of years of exposure to pesticides; a similarly increased, non-significant, PR was found for the middle tertile (1.9 (95% CI 0.9 to 4.0)), although a trend test did not show a significant exposure-response relation. No increased risks were found associated with specific pesticides or pesticide classes, nor with a history of farming or use of well water.CONCLUSIONParkinsonism may be associated with long term occupational exposure to pesticides, although no associations with specific pesticides could be detected. This finding is consistent with most of the publications on this topic.
Non-malignant mortality among Norwegian silicon carbide smelter workers
Authors: Romundstad P , Andersen A , Haldorsen T 
Published: July 2002

Objectives: To investigate associations between exposures in the silicon carbide (SiC) industry and mortality from non-malignant diseases.Methods: Mortality among 2562 men, working in one of three silicon carbide smelters was investigated, giving 52 618 person-years of follow up from 1962 to 1996. Dose-response relations were investigated by internal comparisons using Poisson regression and by stratified standardised mortality ratio (SMR) analyses.Results: Mortality from all causes was significantly raised compared with the Norwegian mortalities among men, SMR=1.12, (95% confidence interval (95% CI) 1.05 to1.20). An excess mortality from asthma, emphysema, and chronic bronchitis combined was found, SMR=2.21 (95% CI 1.61 to 2.95), increasing from 1.05 in the unexposed category to 2.64 (95% CI 1.44 to 4.43) in the upper category of exposure to total dust. The Poisson regression analysis confirmed the results from the stratified SMR analyses, and suggested that smoking did not act as a confounder. No association was found for circulatory mortality.Conclusions: There was an increased mortality from asthma, emphysema, and chronic bronchitis combined among SiC workers exposed to dust .
Polychlorinated dibenzo-p-dioxin and dibenzofuran concentrations in serum samples of workers at intermittently burning municipal waste incinerators in Japan
Authors: Kumagai S , Koda S , Miyakita T , Ueno M 
Published: July 2002

Objectives:To find whether or not incinerator workers employed at intermittently burning municipal incineration plants are exposed to high concentrations of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs).Methods:20 Workers employed at three municipal waste incineration plants (incinerator workers) and 20 controls were studied. The previous job, dietary, smoking, and body weight and height were obtained from a questionnaire survey. Concentrations of PCDDs and PCDFs were measured in serum samples of the workers and the deposited dust of the plants. The influence of occupational exposure on concentrations of PCDDs and PCDFs in serum samples was examined by multiple regression analysis.Results:Dust analysis showed that dominant constituents were octachlorodibenzo-p-dioxin (OCDD) and 1,2,3,4,6,7,8-heptachlorodibenzo-p-dioxin (HpCDD) among the PCDDs, and 1,2,3,4,6,7,8-heptachlorodibenzofuran (HpCDF) and octachlorodibenzofuran (OCDF) among the PCDFs. The toxicity equivalents (TEQs) of summed PCDDs and PCDFs in the deposited dust were 0.91, 33, and 11 ng TEQ/g, respectively, for plants I, II, and III. The means of TEQ in serum samples of summed PCDDs and PCDFs in the incinerator workers and controls were 22.8 and 16.4 pg TEQ/g lipid for area I, 29.4 and 19.3 pg TEQ/g lipid for area II, and 22.8 and 24.9 pg TEQ/g lipid for area III, which were almost the same as for the general population of Japan. No significant differences in the TEQ of PCDDs and TEQ of PCDDs and PCDDs were found between the incinerator workers and the controls. However, the TEQ of PCDFs was significantly higher among the incinerator workers in areas I and II, and the 1,2,3,4,6,7,8-HpCDF concentration was also significantly higher for all three areas. When the occupational exposure index for each constituent of PCDDs and PCDFs was defined as the product of the duration of employment at the incineration plant and the concentration of the constituent in the deposited dust, multiple regression analysis showed that the concentrations of HxCDF, HpCDF, and TEQ of PCDFs in serum samples increased with the occupational exposure index. The multiple regression analysis also suggested that significant factors affecting the concentrations in serum samples were area for HxCDD, age for TCDD, PeCDD, PeCDF, TEQ of PCDDs, TEQ of PCDFs, and TEQ of summed PCDDs and PCDFs, and BMI for HxCDD, HpCDD, and OCDD.Conclusion:This study showed that incinerator workers employed at intermittently burning incineration plants were not necessarily exposed to high concentrations of PCDDs and PCDFs. However, the increases in the concentrations in serum of HxCDF, HpCDF and TEQ of PCDFs with the occupational exposure index suggest that the incinerator workers had inhaled dust containing PCDDs and PCDFs during their work.
Progressive supranuclear palsy
Authors: Rehman H U 
Published: July 2002

Abstract
Progressive supranuclear palsy (PSP) or Steele-Richardson-Olszewski syndrome is a neurodegenerative disease of middle and late age. It is under-diagnosed not only by general physicians but also by neurologists. The cause of PSP is not known. Exposure to toxins and viruses has been proposed in the aetiology of PSP without any concrete evidence. The features of PSP resemble those of Parkinson's disease and the two diseases are often confused. Corticobasal degeneration and multisystem atrophy are other differential diagnoses. Despite certain common features with Parkinson's disease, corticobasal degeneration, and mutisystem atrophy, there are important differences that help to differentiate it from these disorders.
Emptiness of the left iliac fossa: a new clinical sign of sigmoid volvulus
Authors: Raveenthiran V 
Published: July 2002

Abstract

Background
Diagnostic difficulties are common in sigmoid volvulus. This diagnostic delay contributes to high morbidity and mortality.

Aim
This paper recognises visible or palpable emptiness of the left iliac fossa as a new clinical sign of sigmoid volvulus. Predictive accuracy of the sign was assessed in this study.

Methods
519 patients with acute abdomen of non-traumatic origin were prospectively studied.

Results
The new sign was present in 24 out of 86 patients (28%) with sigmoid volvulus. It was absent in all those who did not have sigmoid volvulus. The positive predictive value of the sign was 100%.

Conclusion
Emptiness of the left iliac fossa is a valuable diagnostic adjunct. Positive sign is pathognomonic of sigmoid volvulus. Nevertheless, a negative sign warrants further investigations.
Some high pitched thoughts on chest examination
Authors: Welsby P D , Earis J E 
Published: July 2002

ABSTRACT
Observation reveals that about half of chest physicians use the stethoscope bell when auscultating the lungs and the other half use the diaphragm. None directly apply their ears. Despite extensive reading we have not encountered an evidence based answer to the question “Should normal mortals use the bell or diaphragm?” This unanswered question thus prompted an acoustical odyssey.
DECOMPOSITION OF PARTIALLY OCCLUDED STRINGS IN THE PRESENCE OF ERRORS
Authors: ILIOPOULOS COSTAS S. , REID JAMES F. 
Published: July 2002

A partially occluded scene in an image consists of a number of objects that are partially obstructed by others. By validating a partially occluded image one aims to generate a sequence of concatenated and possibly overlapping objects that corresponds to the input image. This is a theoretical study of partially occluded strings (considered as one-dimensional images) allowing for the presence of errors in each occluded object appearing in the input. Using the unit cost edit distance as our measure of errors, for some small integer k ≥ 0, we present a sequential algorithm for validating a k-approximate one-dimensional image x of length n over a dictionary [Formula: see text] of m objects each having equal length τ in O(nd) time where d = mτ is the size of the dictionary.
Pipeline Architecture
Authors: Ramamoorthy C. V. , Li H. F. 
Published: July 2002

Pipelined computer architecture has received considerable attention since the 1960s when the need for faster and more cost-effective systems became critical. The merit of pipelining is that it can help to match the speeds of various subsystems without duplicating the cost of the entire system involved. As technology evolves, faster and cheaper LSI circuits become available, and the future of pipelining, either in a simple or complex form, becomes more promising.
This paper reviews the many theoretical considerations and problems behind pipelining, surveying and comparing various representative pipeline machines that operate in either sequential or vector pipeline mode, the practical solutions adopted, and the tradeoffs involved. The performance of a simple pipe, the physical speed limitation, and the control structures for penalty-incurring events are analyzed separately. The problems faced by the system designers are tackled, including buffering, busing structur, branching, and interrupt handling. Aspects of sequential and vector processing are studied. Fundamental advantages of vector processing are unveiled, and additional requirements (costs) are discussed to establish a criterion for the tradeoff between sequential and vector pipeline processing. Finally, two recent machines (the CRAY-1 and the Amdahl 470 V/6 systems) are presented to demonstrate how complex pipeline techniques can be used and how simple but advantageous pipeline concepts can be exploited.
Design and implementation of a diagnostic compiler for PL/I
Authors: Conway Richard W. , Wilcox Thomas R. 
Published: July 2002

PL/C is a compiler for a dialect for PL/I. The design objective was to provide a maximum degree of diagnostic assistance in a batch processing environment. For the most part this assistance is implicit and is provided automatically by the compiler. The most remarkable characteristic of PL/C is its perseverance—it completes translation of every program submitted and continues execution until a user-established error limit is reached. This requires that the compiler repair errors encountered during both translation and execution, and the design of PL/C is dominated by this consideration.
PL/C also introduces several explicit user-controlled facilities for program testing. To accommodate these extensions to PL/I without abandoning compatibility with the IBM compiler, PL/C permits “pseudo comments”—constructions whose contents can optionally be considered either source text or comment.
In spite of the diagnostic effort PL/C is a fast and efficient processor. It effectively demonstrates that compilers can provide better diagnostic assistance than is customarily offered, even when a sophisticated source language is employed, and that this assistance need not be prohibitively costly.
Multiprogram scheduling
Authors: Codd E. F. 
Published: July 2002

In order to exploit fully a fast computer which possesses simultaneous processing abilities, it should to a large extent schedule its own workload. The scheduling routine must be capable of extremely rapid execution if it is not to prove self-defeating.
The construction of a schedule entails determining which programs are to be run concurrently and which sequentially with respect to each other. A concise scheduling algorithm is described which tends to minimize the time for executing the entire pending workload (or any subset of it), subject to external constraints such as precedence, urgency, etc. The algorithm is applicable to a wide class of machines.
BIPOLAR MOLECULAR OUTFLOWS FROM YOUNG STARS AND PROTOSTARS
Authors: Bachiller Rafael 
Published: July 2002

▪ Abstract  A violent outflow of high-velocity gas is one of the first manifestations of the formation of a new star. Such outflows emerge bipolarly from the young object and involve amounts of energy similar to those involved in accretion processes. The youngest (proto-)stellar low-mass objects known to date (the Class 0 protostars) present a particularly efficient outflow activity, indicating that outflow and infall motions happen simultaneously and are closely linked since the very first stages of the star formation processes. This article reviews the wealth of information being provided by large millimeter-wave telescopes and interferometers on the small-scale structure of molecular outflows, as well as the most recent theories about their origin. The observations of highly collimated CO outflows, extremely high velocity (EHV) flows, and molecular “bullets” are examined in detail, since they provide key information on the origin and propagation of outflows. The peculiar chemistry operating in the associated shocked molecular regions is discussed, highlighting the recent high-sensitivity observations of low-luminosity sources. The classification schemes and the properties of the driving sources of bipolar outflows are summarized with special attention devoted to the recently identified Class 0 protostars. All these issues are crucial for building a unified theory on the mass-loss phenomena in young stars.
Investigations into Performance of Minimally Invasive Telesurgery with Feedback Time Delays
Authors: Ottensmeyer Mark P. , Hu Jianjuen , Thompson James M. , Ren Jie , Sheridan Thomas B. 
Published: July 2002

This paper describes the testbed telesurgery system that was developed in MIT's Human Machine Systems Laboratory. This system was used to investigate the effects of communication time delays on controller stability and on the performance of surgical tasks. The system includes a bilateral force-reflecting teleoperator system, interchangeable surgical tools, audio and video communication between the master and slave sites, and methods to generate time delays between the sites. To compensate for the time delays, various control schemes were investigated, leading to the development and selection of fuzzy sliding control (FSC). With a stable teleoperator system, experiments in performing a variety of surgical exercises were conducted. These looked at the performance of a team of a telesurgeon and local assistant given a number of different time-delay scenarios, including synchronous and asynchronous force and audio/video feedback. The results of the research project include the development of the novel FSC algorithm, data on how time delays degrade performance of surgical tasks, and recommendations on how telesurgery should be performed to accommodate telecommunication time delays.
WHAT IF WE HAD NO ACCOUNTS OF SENNACHERIB'S THIRD CAMPAIGN OR THE PALACE RELIEFS DEPICTING HIS CAPTURE OF LACHISH?
Authors: Edelman Diana 
Published: July 2002

AbstractIn spite of the important information contained in the various accounts of Sennacherib's third campaign and the reliefs of his conquest of Lachish, their absence would have little effect upon the recreation of the events of the reign of Hezekiah by historians of Judah. The results of excavations at Tell ed-Duweir/ Lachish and Tel Miqne/Ekron suggest that sometime in the last decades of the eighth century or in the opening decades of the seventh century bce, there was an Assyrian military presence in the Judean shephelah and a ceding of control over the olive yield in the shephelah and highlands of Judah to the Philistines to fuel a newly established regional olive oil industry. When information about the kings who ruled Judah in the period in question is considered, Hezekiah remains the most logical candidate under whom the ceding of territorial control, which would have required Assyrian consent and agency, can be plausibly posited. The main outlines of the history of the period can nevertheless be posited; only the specific nature of the interregional conflict between Judah and Philistia and the specific Assyrian resolution of the conflict cannot be established.
Hermann Diels on the Presocratics: Empedocles' double destruction of the cosmos (Aetius ii 4.8)
Authors: O'Brien Denis 
Published: July 2002

AbstractStobaeus records a placitum where Empedocles says that the world is destroyed by the domination in turn of Love and of Strife. The placitum makes perfectly good sense in the context of Empedocles' belief that Love and Strife produce, in turn, a non-cosmic state of total unity (Love) and of total separation (Strife). But for over two hundred years scholars have been unable to hear that simple message. Sturz (1805) emended the text so as to make it fit the non-cyclical interpretation of Empedocles that he had taken over from the pages of Tiedemann (1791). When Diels included Stobaeus' text in his edition of Aetius, in the Doxographi graeci (1879), he failed to remove the emendation, although his own reconstruction of the chapter heading in Aetius made the emendation impossible. Twenty years later, Diels saw the light, and printed Stobaeus' placitum, unemended, in his Poetarum philosophorum fragmenta (1901) and in successive editions of his Fragmente der Vorsokratiker (from 1903 onwards). But Kranz resurrected the emendation in the Nachträge to his sixth edition of the Fragmente der Vorsokratiker (1951). The emended placitum is used again by Uvo Hölscher (1965) to support a non-cyclical interpretation of Empedocles and is repeated in the latest collection of the fragments and testimonia (Brad Inwood, 1992). Hölscher fails to appreciate that the text that he uses to support his reconstruction is merely Sturz's translation into Greek of the non-cyclical interpretation of Empedocles proposed by Tiedemann at the end of the eighteenth century.
DID THE AUTHORS OF THE BOOKS OF KINGS MAKE USE OF ROYAL INSCRIPTIONS?
Authors: Parker Simon 
Published: July 2002

AbstractIn light of several recent claims that the authors of Kings made use of royal inscriptions, this paper reviews the various kinds of evidence bearing on the matter. The first focus of attention is the evidence for the production of royal inscriptions in Israel and Judah: literary (biblical) references as evidence of native belief in such and archaeological (epigraphic) evidence of actual inscriptions. Fragmentary as it is, this evidence supports the claim that at least royal building inscriptions were produced. Second, assuming that the kings of Israel and Judah would have addressed similar subjects on similar occasions to those addressed by neighboring kings in royal inscriptions, the author examines the evidence for the appearance in Kings of material characteristic of the Northwest Semitic royal inscriptions recovered to date from neighbors of Israel and Judah. Here the conclusion is negative - although the study supports the hypothesis of Kings' use of an Israelite king list.