Uninterrupted Periods Research Articles

A COMPARATIVE CLINICAL STUDY ON THE THERAPEUTIC EFFECT OF YASHTIMADHU GHRITA TARPANA AND YASHTIMADHU GHRITA ASCHYOTHANA IN COMPUTER VISION SYNDROME

A group of ocular symptoms produced due to working with computer monitors are collectively known as com-puter vision syndrome. The ocular symptoms include Decreased vision, Burning, Red eyes, Stinging and photo-phobia. Computer vision syndrome (CVS) is a condition resulting from focusing the eyes on a Video Display Terminal (VDT) like Computer, Tablet, Smart phones etc. for protracted, uninterrupted periods of time. Symp-toms of Computer Vision Syndrome include Headache, Blurred vision, burning sensation, Fatigue, Dry eyes, Irritated eyes, Double vision, and Difficulty refocusing the eyes. These symptoms can be further aggravated by improper lighting conditions and air moving fast in the eyes. Dry eye is a major symptom that is targeted in the therapy of computer vision syndrome. Acharya susrutha mentioned Tarpanam, Putapakam, Sekam, Acshy-othanam, Anjana, the kriya kalpas for netra rogas.1 Tarpana is indicated when the eyes are fatigue inactive, su-shka (dry), ruksha (rough), injured, patients of vata and pitta vitiation, when there is squint, loss of lashes, clouded vision, difficulty in opening the eyes etc. conditions, Tarpana should be done to the patients.2 In Ash-tanga hridaya, “Sarvesham akshi rogaanaammadou Acshyothanam hitam….” for all eye diseases Acshyothanam is mentioned as treatment3. Hence, the procedure of Tarpana and Aschyotana can be done in Computer vision syndrome. This research work was carried out at Shri Vijaya Mahantesh Ayurvedic Medical College, and R.P. Karadi Ayurvedic Hospital, Ilkal.

Benefits beyond cardiometabolic health: the potential of frequent high intensity 'exercise snacks' to improve outcomes for those living with and beyond cancer.

High intensity interval training (HIIT) has been shown to consistently elicit rapid and significant adaptations in a number of physiological systems, across many different healthy and clinical populations. In addition, there is increasing interest in how some acute, yet transient responses to high intensity exercise potentially reduce the risks of particular diseases. Recent work has shown that discrete, brief bouts of high intensity exercise (termed 'exercise snacks') can improve glucose control and vascular health and thus counter the negative cardiometabolic consequences of prolonged, uninterrupted periods of inactivity. In this brief review, we advance the case, using evidence available from pre-clinical studies in the exercise oncology literature, that brief, frequently completed bouts of high intensity exercise embedded within an individual's overall daily and weekly physical activity schedule, may transiently impact the tumour microenvironment and improve the health outcomes for those who have been diagnosed and treated for cancer.

Self-organized communities of children

Abstract From a child-centered perspective, this article explores the practices of children’s self-organized play-communities in institutional everyday life in Danish early childhood education and care (ECEC) settings, based on a phenomenological non-participant-observational study with a duration of 16 months involving two kindergartens (Bernstorff, 2021). Drawing on Bourdieu’s reflexive sociology and praxeology, children’s self-organized play-communities are analyzed as a social space, being a field for relations, fights, negotiations with specific admission requirements emerging as accepted values shared by the specific field. The analysis demonstrates that self-organized play-communities are a social space with its own practices of being together expressed through the social language in play linked to and guided by an institutional choreography. Besides, the analysis demonstrates three kinds of different communities of children in self-organized play, viz. the categories: Relational play-communities, Community-oriented play-communities, and Conflictual play--communities, which categories may, however, also overlap into blended categories. The article argues that children’s self-organized play-communities risk being under pressure in the institutional choreography, which in turn affects children’s opportunities for having uninterrupted periods of time and space to self-organized play in their institutional everyday life.

Objectively Assessing the Effect of a Messenger-based Intervention to Reduce Sedentary Behavior in University Students: A Pilot Study

AimSedentary behavior poses a serious health risk. Students in particular are highly affected by prolonged, uninterrupted periods of sitting due to routines in everyday university life, such as attending lectures, self-study periods in the library, etc. Whereas university students are mostly young and therefore appear to be healthy, evidence-based consequences of prolonged sitting may come to pass in prospective times. Therefore, primary prevention must be initiated to shield university students from the occurrence of non-communicable diseases (NCDs). Consequently, the study aims to evaluate a messenger-based intervention designed to reduce sedentary time among university students.Subjects and MethodsThe effectiveness of the intervention was assessed in a randomized controlled trial with a convenience sample of thirty-four German university students. ActivPal devices (Pal Technologies Ltd., Glasgow) were applied to measure sedentary behavior objectively before and after a 3-week intervention of messages to interrupt sedentary time. An additional evaluation of the messages was carried out.ResultsSedentary behavior decreased by about one hour in the intervention group. Explorative analysis shows a statistically significant, negative correlation between sedentary time at baseline and the change of sedentary behavior over time in the intervention group (r = − .81) indicating effectiveness of the intervention for the participants with the highest sedentary times at baseline. Additionally, the messages were considered appropriate by the participants.ConclusionA reduction of sedentary time of one hour per day in the intervention group is practically significant. The current investigation had similar findings with prior studies where promising results for the reduction of sedentary behavior were observed through mobile-based interventions. The detected effects of the intervention in this pilot study demonstrate an opportunity for further research in this field.

Arbeitsbezogenes sedentäres Verhalten

ZusammenfassungHintergrundSedentäres Verhalten ist mit einem erhöhten Risiko für chronische Krankheiten und einer höheren Gesamtmortalität assoziiert. Arbeitsbezogenes Sitzen hat einen großen Anteil am täglichen sedentären Verhalten, insbesondere bei Büroangestellten.Ziel der ArbeitIn dieser Studie sollte untersucht werden, wie viel Zeit bei verschiedenen Aufgaben am Arbeitsplatz und beim Pendeln von Verwaltungsangestellten einer Universitätsklinik in Deutschland im Sitzen verbracht wird.Material und MethodenEine fragebogengestützte Querschnittsstudie mit Verwaltungsangestellten des Universitätsklinikums Regensburg wurde durchgeführt, um arbeitsbezogenes sedentäres Verhalten zu untersuchen.ErgebnisseDie Studienpopulation bestand aus 159 Teilnehmenden (54,1 % Frauen, 51,6 % älter als 40 Jahre), was einer Antwortquote von 26 % entspricht. Die durchschnittliche tägliche Sitzzeit am Arbeitsplatz betrug im Median 7,0 h (Interquartilsbereich [IQR] 6,0–7,5 h) und fand hauptsächlich bei der Computerarbeit statt (57,3 %). Die mittlere Stehzeit bei der Arbeit betrug im Median 0,8 h (IQR 0,3–1,4 h). Verwaltungsangestellte verbrachten während des Pendelns im Median 0,7 h (IQR 0,3–1,0 h) pro Tag im Sitzen. Die Teilnehmenden waren der Ansicht, dass langes und ununterbrochenes Sitzen negative (69,6 %) oder eher negative (29,7 %) Auswirkungen auf die Gesundheit hat.DiskussionVerwaltungspersonal in Krankenhäusern verbringt einen großen Teil der täglichen Arbeitszeit mit sedentärem Verhalten. Maßnahmen, die es ermöglichen, sowohl im Sitzen als auch im Stehen zu arbeiten, können zu einer Verringerung der arbeitsbedingten Sitzzeit führen und damit die Gesundheit am Arbeitsplatz und im weiteren Sinne die öffentliche Gesundheit verbessern.

Case Fatality in Patients With Aneurysmal Subarachnoid Hemorrhage in Finland: A Nationwide Register-Based Study.

Although single-center studies have reported declining case fatality rates (CFRs) of aneurysmal subarachnoid hemorrhage (SAH), nationwide reports that also include sudden-death SAHs with long uninterrupted study periods have remained limited. Moreover, little is known about whether the time-dependent trends of SAH CFR differ by age and/or sex. Thus, we aimed to characterize the nationwide changes of SAH CFRs in Finland between 1998 and 2017. We used 2 externally validated nationwide registers to identify all hospitalized and nonhospitalized (sudden-death) aneurysmal SAH events in Finland during 1998-2017. In addition to overall 30-day CFRs, we determined annual proportions of sudden-death and 30-day CFRs among hospitalized patients with SAH. To estimate time-dependent trends, we calculated annual age-adjusted and sex-adjusted CFR changes (percent with 95% CIs). Between 1998 and 2017, we identified 9,443 cases with SAH (57.6% women), of which 2,245 (23.8%) died before hospitalization and 3,715 (39.3%) died within 30 days after SAH. Among the 7,198 hospitalized patients with SAH, the 30-day CFR was 20.4%. During the study period, the overall age-adjusted and sex-adjusted CFR declined by an average of 1.8% (1.1%-2.6%) per year. The decreases were especially notable in the proportion of sudden deaths among middle-aged (aged 40-64 years) and older (aged 65 years or older) women (2.9% [1.1%-4.7%] and 2.3% [0.7%-4.0%] per year, respectively) and in the CFRs of hospitalized young (younger than 40 years) and middle-aged women (9.1% [2.3%-15.7%] and 4.3% [2.3%-6.5%] per year, respectively). On the contrary, the 30-day CFR of older (aged 65 years or older) hospitalized men increased by 3.5% (0.7%-6.3%) per year, while the proportions of older men who died before hospitalization remained unchanged. The overall CFR of SAH seems to be decreasing, at least among women. The continued high CFR of hospitalized older men requires attention from clinicians and epidemiologists, especially if this trend is also common in other countries.

The role of cyclones and potential vorticity cutoffs for the occurrence of unusually long wet spells in Europe

Abstract. The synoptic dynamics leading to the longest wet spells in Europe are so far poorly investigated despite these events' potentially large societal impacts. Here we examine the role of cyclones and potential vorticity (PV) cutoffs for unusually long wet spells in Europe, defined as the 20 longest uninterrupted periods with at least 5 mm daily accumulated precipitation at each ERA-Interim grid point in Europe (this set of spells is hereafter referred to as S20). The S20 occur predominantly in summer over the eastern continent, in winter over the North Atlantic, in winter or fall over the Atlantic coast, and in fall over the Mediterranean and European inland seas. Four case studies reveal distinct archetypal synoptic storylines for long wet spells: (a) a 7 d wet spell near Moscow, Russia, is associated with a single slow-moving cutoff–cyclone couple; (b) a 15 d wet spell in Norway features a total of nine rapidly passing extratropical cyclones and illustrates serial cyclone clustering as a second storyline; (c) a 12 d wet spell in Tuscany, Italy, is associated with a single but very large cutoff complex, which is replenished multiple times by a sequence of recurrent anticyclonic wave breaking events over the North Atlantic and western Europe; and (d) a 17 d wet spell in the Balkans features intermittent periods of diurnal convection in an environment of weak synoptic forcing and recurrent passages of cutoffs and thus also highlights the role of diurnal convection for long wet spells over land. A systematic analysis of cyclone and cutoff occurrences during the S20 across Europe reveals considerable spatial variability in their respective role for the S20. For instance, cyclones are present anywhere between 10 % and 90 % and cutoffs between 20 % and 70 % of the S20 time steps, depending on the geographical region. However, overall both cyclones and cutoffs appear in a larger number and at a higher rate during the S20 compared to climatology. Furthermore, in the Mediterranean, cutoffs and cyclones are significantly more persistent during the S20 compared to climatology. Our study thus documents for the first time the palette of synoptic storylines accompanying unusually long wet spells across Europe, which is a prerequisite for developing an understanding of how these events might change in a warming climate and for evaluating the ability of climate models to realistically simulate the synoptic processes relevant to these events.

Influence of Sit-Stand Tables in Classrooms on Children's Sedentary Behavior and Teacher's Acceptance and Feasibility: A Mixed-Methods Study.

Children spend over 70% of their school day sitting, most of the time in the classroom. Even when meeting physical activity guidelines but sitting for long uninterrupted periods, children are at risk of poorer health outcomes. With an approach to create an active learning environment through the implementation of sit-stand tables, this exploratory mixed-methods study aims to evaluate a holistic concept for reducing sedentary time in schools by implementing sit-stand tables as well as to examine the feasibility and didactic usability in classroom settings. Children from eight German schools aged 7 to 10 in primary schools and 11 to 13 in secondary schools (n = 211), allocated into control and intervention groups, were included in the study, as well as teachers (n = 13). An accelerometer was used as a quantitative measure to assess sitting and standing times and sport motoric tests were taken. Qualitative interviews were performed with teachers regarding feasibility and acceptance of the sit-stand tables. Independent t-test analysis adjusted for age, sex and school type found that sitting times of children in the intervention group could be reduced (by 30.54 min per school day of 6 h, p < 0.001) within all school and age levels. Overall, implementing sit-stand tables in classrooms serves as a feasible and effective opportunity to reduce sedentary behaviour and create an active learning environment.

Declining Student Performance and Satisfaction following Back-to-Back Scheduling of Foundational Science Exams: Experience at a Large US Osteopathic Medical School

Examinations are a significant source of academic stress, particularly in the demanding environment of medical education. In order to reduce the burden of anxiety, burnout and depression among students, medical schools aim at reducing academic stress by exploring alternatives to frequent, high-stakes assessment schedules. The bundling of examinations into integrated block assessments has emerged as a successful strategy to reach this goal, as the resulting reduction in examination days can provide uninterrupted periods of study time that allows for a deeper understanding of material as well as an opportunity for students to take wellness breaks between exams. The present study examines the outcomes of a natural experiment on back-to-back exam scheduling in two related medical school courses post hoc. The outcomes of the scheduling change on the academic performance and satisfaction of examinees were analyzed with a mixed-methods approach. The data show that the transition from a spaced-out to a back-to-back exam schedule was accompanied by a drop in academic performance and student satisfaction with the curricular schedule. The data presented suggest that without proper curricular integration, the block scheduling of exams has negative effects on learning outcomes and student satisfaction.

Differential tolerance of Zymoseptoria tritici to altered optimal moisture conditions during the early stages of wheat infection

Foliar plant pathogens require liquid or vapour water for at least part of their development, but their response and their adaptive tolerance to moisture conditions have been much less studied than other meteorological factors to date. We examined the impact of altering optimal moisture conditions conducive to infection on the wheat-Zymoseptoria tritici interaction. We assessed the responses in planta of 48 Z. tritici strains collected in two climatologically distinct locations (Ireland and Israel) to four high moisture regimes differing in the timing and the duration of uninterrupted exposure to saturated relative humidity (100% RH) during the first three days of infection. Individual- and population-level moisture reaction norms expressing how the sporulating area of a lesion change with the RH conditions were established based on visual assessments of lesion development at 14, 17 and 20 days post-inoculation (dpi). Our findings highlighted: (i) a critical time-dependent effect on lesion development of uninterrupted periods of exposure to 100% RH during these earliest infection stages; (ii) a marked interindividual variation in the sensitivity to RH conditions both in terms of strain average moisture response and plasticity; (iii) a higher tolerance – expressed at 14 dpi, not later – of the Israeli population to early interruption of optimal moisture conditions. By indicating that sensitivity to sub-optimal moisture conditions may vary between individuals and populations, this study highlights the evidence of moisture adaptation signature in a plant pathogen. Understanding such variation is helpful to predict the response of pathogen populations to changing climatic conditions.

Association between patterns of sedentary time and academic performance in adolescents: the mediating role of self-concept.

Objective:To analyze the association between the pattern of sedentary time (bouts and breaks) with academic performance, with an emphasis on the mediating role of self-concept.Methods:Participants in the cross-sectional study were 394 adolescents (208 girls), aged 10–14 years, from sixth grade from Londrina, Paraná, Brazil. The sedentary time pattern was measured through accelerometry. Definitions: sedentary bouts — uninterrupted periods of sedentary behavior; breaks — non-sedentary period between two sedentary bouts. The self-concept was estimated using the Piers-Harris II Inventory. Academic performance was obtained by school grades.Results:Short sedentary bouts were associated with higher academic performance in boys (1–4 minutes: β=0.035, p=0.007) and girls (1–4 minutes: β=0.031, p=0.014; 5–14 minutes: β=0.054, p=0.001). Long bouts (30 minutes) were associated with lower academic performance in boys (β=-0.023; p=0.011) and girls (β=-0.032; p<0.001). For girls, total and intellectual self-concept mediated the association between all sedentary pattern and academic performance (bouts 1–4 minutes [total: 39% and intellectual: 42.8%]; bouts 5–14 minutes [total: 21.5% and intellectual: 35.4%]; bouts ≥30 minutes [total: 22.6% and intellectual: 32.3%]; and breaks [total: 38.9% and intellectual: 40.7%]). For boys, the total (56.4%) and intellectual (82.9%) self-concept mediated only the association between bouts of 5–14 minute and academic performance.Conclusions:The pattern of sedentary time is associated with academic performance in adolescents and this association is mediated by self-concept, especially in girls.

The Effect of a Consumer-Based Activity Tracker Intervention on Accelerometer-Measured Sedentary Time Among Retirees: A Randomized Controlled REACT Trial.

BackgroundEffective strategies to reverse the increasing trend of sedentary behavior after retirement are needed. The aim of this study was to examine the effect of 12-month activity tracker-based intervention on daily total and prolonged sedentary time (≥60 minutes) among recent retirees.MethodsRandomization to intervention and control groups was performed to 231 retirees (mean age 65.2 [SD 1.1] years, 83% women). Intervention participants wore a consumer-based wrist-worn activity tracker (Polar Loop 2, Polar, Kempele, Finland), including daily activity goal, every day and night for 12 months. The activity tracker also gave vibrating reminders to break up uninterrupted inactivity periods after 55 minutes. A wrist-worn triaxial ActiGraph wGT3X-BT accelerometer was used to measure sedentary time at baseline and at 3-, 6-, and 12-month time points.ResultsThe use of an activity tracker did not reduce daily total or prolonged sedentary time over 12 months (p values for time * group interaction 0.39 and 0.27, respectively). In the post hoc analysis focusing on short- and medium-term effects on prolonged sedentary time, no differences between the intervention and control groups over 3 months were found, but a tendency for a greater decrease in prolonged sedentary time in the intervention group over 6 months was seen (mean difference in changes between the groups 29 minutes, 95% CI −2 to 61).ConclusionsThe activity tracker with inactivity alerts did not elicit changes in sedentary time over 12 months among recent retirees. Alternative approaches may be needed to achieve long-term changes in sedentary time among retirees. Clinical Trials registration Number: NCT03320746

Avoid Always and Never

Avoid <i>Always</i> and <i>Never</i>

Frost risk indicator analysis in Sopron wine region (1961–2016)

A characteristic symptom of climate change is the modified distribution of frost events that has fundamental effect on agricultural production. To learn these changes in Sopron region, Hungary, we investigated daily minimum and maximum temperature data of the period 1961–2016 provided by the Hungarian Meteorological Service. The time interval 1961–2016 was split into two (1961–1990 and 1991–2016) in order to compare nearly two climate cycles statistically. We analyzed the 56-year trends of the last frosty day of spring and the first frosty day of autumn as well as the length of the longest yearly frost-free period. As for the winter period (October 16 – February 28), the frequencies of four different strengths of frosty days were examined. We analyzed how often an uninterrupted frost-free period (Tmin&gt;0 °C) longer than 12 days developed between two frosty periods in spring and in autumn, exactly when it occurred (Julian day), and how many days it lasted for. Finally, we investigated the trends of the yearly numbers of spring frosty days and their variances. Amongst others, we show that the length of the longest uninterrupted frost-free periods has increased significantly over the past 56 years, with 70% of years in the recent climate cycle (1991–2016) having frost-free periods of more than 200 days. As an average change per 10 years, the last spring frost period ended four days earlier, while the onset of autumn frost shifted 2 days towards the end of the year. The number of days with minimum temperatures below -15 °C, -10 °C, -5 °C, and below 0 °C decreased significantly during the dormant period. These changes mean a prolongation of the growing season, partly a reduction of the winter regeneration period, and the potential higher overwintering success of the pests. The number of spring frost days also decreased significantly, while their variability has grown markedly.

Trapezius muscle activity variation during computer work performed by individuals with and without neck-shoulder pain

This study aimed at determining the extent to which individuals with neck-shoulder pain and non-symptomatic individuals differ in muscle activation patterns, when performing computer work, as quantified by exposure variation analysis (EVA). As a secondary aim, we also aimed to quantify the day-to-day reliability of EVA variables describing trapezius muscle activation in a non-symptomatic control group. Thirteen touch-typing computer users (pain: n = 5, non-symptomatic: n = 8) completed three pre-selected computer tasks in the laboratory. Upper trapezius muscle activity was recorded using electromyography and analyzed using EVA with five amplitude and five duration categories. Individuals with neck-shoulder pain spent less time at low amplitudes and exhibited longer uninterrupted periods of muscle activation compared to their non-symptomatic counterparts. Thus, non-symptomatic workers tended to switch between exposure levels more often than individuals with pain. For a majority of EVA variables, ICCs ranged from 0.6 to 0.9, and between-days coefficients of variation were between 0.4 and 2.2.

Sociodemographic and clinical correlates of device-measured sedentary behaviour in multiple sclerosis

Purpose This study examined sociodemographic and clinical variables as correlates of device-measured volume and pattern of sedentary behaviour in persons with multiple sclerosis (MS). Materials and methods Participants were recruited through a standardised invitation letter distributed among 1000 persons randomly selected from the North American Research Committee on MS registry. Those who volunteered wore an accelerometer for 7 d and provided sociodemographic and clinical information. Results There were 233 persons with MS who were included in the analyses. Linear regression analyses indicated that age and MS type explained significant variance in total sedentary time per day as well as number of breaks in sedentary time. Only disability status explained significant variance in sedentary bout length, whereas age explained significant variance in both number of long sedentary bouts per day. Both age and disability status explained significant variance total time spent in long sedentary bouts per day. Conclusions Persons of older age, progressive MS, and higher disability status spend prolonged, uninterrupted periods of time sedentary. Such results highlight the need for targeted interventions in sub-populations of MS that reduce time spent sedentary and break up the pattern of sedentary behaviour. Implications for Rehabilitation Sedentary behaviour is highly prevalent in multiple sclerosis and may be associated with comorbid conditions. The majority of research on sedentary behaviour in multiple sclerosis has been derived from self-report instruments that only measure the volume of sitting time per day. This study indicates that persons with multiple sclerosis spend a significant amount of time sedentary, and those who are older, have progressive multiple sclerosis, and have higher disability status spend prolonged, uninterrupted periods of time sedentary. Such results highlight the need for targeted behavioural interventions in these sub-populations of multiple sclerosis to reduce time spent sedentary and break the pattern of sedentary behaviour to manage its consequences.

Variation of macro‐circulation forms over the Atlantic‐Eurasian temperate zone according to the Vangengeim‐Girs classification

AbstractThis paper presents the results of an investigation of the variability in macro‐circulation forms at the mid‐tropospheric level distinguished in the Vangengeim‐Girs (V‐G) classification. The number of days and of uninterrupted periods of at least 2 days (so‐called episodes) with V‐G forms were analysed based on the daily atmospheric circulation catalogue for the period 1949–2010. The average number of circulation episodes per year (~51) and their average persistence (6–9 days) were determined. When analysing the short‐term variability, the frequency of transitions between macroforms: W ↔ E, E ↔ C and W ↔ C was calculated. It was found that these sequences were random in character. Changes in average frequencies of V‐G macroforms in an annual cycle were evaluated and the seasons of dominant zonal (W) and meridional (E, C) circulation patterns distinguished. In the years 1949–2010, four circulation epochs were separated, differing in the macroform frequency quotients—fW/fE, fW/fC and fE/fC. Three epochs were meridional (until 1988) and the last one is zonal. A growing trend was observed in the number of circulation episodes, indicating an increase in the frequency of changes of circulation forms. This rise was attributed to the growing frequency of the W episodes and the decreasing number and persistence of E episodes in the last two decades of the analysed period.

Mortality of Broiler Chickens During Summer Fattening Periods Affected by Microclimatic Conditions

Abstract Mortality of chickens during two summer fattening periods L1 and L2 in commonly used halls for chicken fattening in Slovakia have been evaluated in this paper. Effect of microclimatic conditions in housing area on recorded mortality has been analysed. Mortality was assessed in six halls, microclimate parameters and surface temperatures were continually measured only in one of the middle halls. It was documented that high mortality occurred during summer in the last phase (P3) of fattening period due to sudden hot weather waves. Daily mortality rate varied up to 447 birds in evaluated hall 3. During the last third of both fattening periods, it was significantly higher than during the first two phases (P L1 = 0.0036; P L2 = 1.4·10−6). Differences among halls were insignificant (P L1 = 0.614; P L2 = 0.413). In L1, average daily temperatures went beyond the recommended temperatures from 21st to 31st day. During L2, it was from 29th to 31st day and from 36th to 38th. The extra high mortality occurred in L1 on 31st day (447 birds) and during L2 on 36th day (88 birds), 37th day (96 birds) and 38th day (155 birds). High differential temperatures have been recorded and uninterrupted time periods (6 hours or more) with temperature higher than 30 °C and/or the relative humidity (RH) exceeding 70% were occurred during these days. In order to eliminate effect of sudden hot weather waves, modern digitally controlled microclimate regulation technologies (heat pumps, floor cooling, etc.) can be used, supported by data obtained from detailed microclimate analysis documented in this paper.

Should I stay or should I go? What we can learn from working patterns of Central and Eastern European labour migrants about the nature of present-day migration

ABSTRACTIn this paper, we examine the extent to which the employment histories of Central and Eastern EU (CEE) labour migrants exhibit patterns of temporary, circular or settlement migration. We expect to find these diverse and changeable patterns following the phenomenon of ‘New European Migration’. By distinguishing between working patterns we are able to describe actual migration behaviour to the destination country more accurately. We use wage data to track a cohort of all employees who worked in the Netherlands in June 2010, for a period of five years. Our findings show that the majority of CEE labour migrants stopped working as employees in the Netherlands within five years, mostly after an uninterrupted single period of employment. In addition, a third of CEE labour migrants engage in settlement migration, working continuously in the Netherlands for a long period. Only a very small proportion can be considered as circular migrants. This contradicts our expectations regarding New European Migration, that there would be fewer labour migrants with uninterrupted periods of work and more labour migrants working for shorter periods.

Blijven of terugkeren?

Remain or return?What we can learn from working patterns of Central and Eastern European labour migrants about the nature of present-day migrationIn this paper we examine to what extent the work histories of Central and Eastern European (CEE) labour migrants show patterns of temporary, circular or settlement migration. We expect to find these diverse and changeable patterns following the phenomenon of the new European migration. By distinguishing working patterns we are able to describe more accurately actual migration behaviour to the country of destination. We follow a cohort of all employees who worked in the Netherlands in June 2010 for a period of five years by using wage data.Our findings show that the majority of CEE labour migrants are temporary migrants and stop working as an employee in the Netherlands within five years, mostly after a relatively long, single period of work. Only a very small proportion can be considered as circular migrants and shows a pattern of short-term work or a repetitive pattern of short-term work. Furthermore, one third of CEE labour migrants engage in settlement migration; they work continuously in the Netherlands for a long period. This contradicts our expectations regarding the new European migration that there would be fewer labour migrants with uninterrupted periods of work and more labour migrants working for shorter periods.