298 resultados para Late lactation milk


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Thirty-six Holstein Friesian heifers (dairy herd replacements) were assigned to one of three regrouping treatments during the post-calving period. In Treatment 1, heifers were introduced individually to an established group of cows and heifers within 24 h of calving ('Single-day 1'). In Treatment 2, heifers were housed individually in a straw pen for I week after calving before being added individually to the group ('Single-day 7'). In Treatment 3, two heifers were housed together in a straw pen for 1 week after calving before being added as a pair to the group ('Pair-day T). The size of the resident group remained constant at 16 animals (10 mature cows and 6 first-lactation heifers). The behaviour of the heifers was assessed during their first 8 h and first month in the resident group, and milk yield parameters, body condition loss and live weight loss were assessed during the first month post-calving. Reproductive performance was assessed during the post-calving period, and hoof health parameters were measured I month prior to calving, and at I and 3 months post-calving. Heifers in the 'Pair-day 7' treatment appeared to associate closely during their first month in the group by spending more time than expected in the same pen area and in adjacent cubicles (P

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Christ’s life, as related through the Gospel narratives and early Apocrypha, was subject to a riot of literary-devotional adaptation in the medieval period. This collection provides a series of groundbreaking studies centring on the devotional and cultural significance of Christianity’s pivotal story during the Middle Ages.

The collection represents an important milestone in terms of mapping the meditative modes of piety that characterize a number of Christological traditions, including the Meditationes vitae Christi and the numerous versions it spawned in both Latin and the vernacular. A number of chapters in the volume track how and why meditative piety grew in popularity to become a mode of spiritual activity advised not only to recluses and cenobites as in the writings of Aelred of Rievaulx, but also reached out to diverse lay audiences through the pastoral regimens prescribed by devotional authors such as the Carthusian prior Nicholas Love in England and the Parisian theologian and chancellor of the University of Paris, Jean Gerson.

Through exploring these texts from a variety of perspectives — theoretical, codicological, theological — and through tracing their complex lines of dissemination in ideological and material terms, this collection promises to be invaluable to students and scholars of medieval religious and literary culture.

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Microlaminated sediment cores from the Kalya slope region of Lake Tanganyika provide a near-annually resolved paleoclimate record between similar to 2,840 and 1,420 cal. yr B.P. demonstrating strong linkages between climate variability and lacustrine productivity. Laminae couplets comprise dark, terrigenous-dominated half couplets, interpreted as low density underflows deposited from riverine sources during the rainy season, alternating with light, planktonic diatomaceous ooze, with little terrigenous component, interpreted as windy/dry season deposits. Laminated portions of the studied cores consist of conspicuous dark and light colored bundles of laminae couplets. Light and dark bundles alternate at decadal time scales. Within dark bundles, both light and dark half couplets are significantly thinner than within light bundles, implying slower sediment accumulation rates during both seasons over those intervals.

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A ca. 1400-yr record from a raised bog in Isla Grande, Tierra del Fuego, Argentina, registers climate fluctuations, including a Medieval Warm Period, although evidence for the 'Little Ice Age' is less clear. Changes in temperature and/or precipitation were inferred from plant macrofossils, pollen, fungal spores, testate amebae, and peat humification. The chronology was established using a C-14 wiggle-matching technique that provides improved age control for at least part of the record compared to other sites. These new data are presented and compared with other lines of evidence from the Southern and Northern Hemispheres. A period of low local water tables occurred in the bog between A.D. 960-1020, which may correspond to the Medieval Warm Period date range of A.D. 950-1045 generated from Northern Hemisphere tree-ring data. A period of cooler and/or wetter conditions was detected between ca. A.D. 1030 and I 100 and a later period of cooler/wetter conditions estimated at ca. cal A.D. 1800-1930, which may correspond to a cooling episode inferred from Law Dome, Antarctica. (C) 2004 University of Washington. All rights reserved.

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This article evaluates Bauer's theory of the nation and the debateon national-cultural autonomy in late imperial Austria. It finds important similarities with contemporary liberal debates on multiculturalism and the rights of ethnic and national minorities. It argues that the debate on national-cultural autonomy went in some respects beyond the contemporary debate on multiculturalism. National-cultural autonomy rejects the idea of the nation-state and proposes instead a multi-nation-state that recognises differential rights for ethnic and national minorities. It seeks to break the limitations of liberal democracy and the territorial principle of the nation-state by organising national communities as deterritorialised national corporations, and multination-states as territorialised non-national identities.

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Purpose – The purpose of this paper is to identify the main practitioners, goods, customers and locations of secondhand marketing activities in late medieval England. It questions how important was the economic role played by such markets and what was the interaction with more formal market structures?

Design/methodology/approach – A broad range of evidence was examined, covering the period from 1200 to 1500: regulations, court rolls, wills, manorial accounts, literature, and even archaeology. Such material often provided mere scraps of information about marginal marketing activity and it was important to recognise the severe limitations of the evidence. Nevertheless, a wide survey of the available sources can give us an insight into medieval attitudes towards such trade, as well as reminding us that much marketing activity occurred beyond the reach of the surviving documentation.

Findings – Late medieval England had numerous outlets for secondhand items, from sellers of used clothes and furs who wandered the marketplaces to craftsmen who recycled and mended old materials. Secondhand marketing was an important part of the medieval makeshift economy, serving not only the needs of the lower sectors of society but also those aspiring to a higher status. However, it is unlikely that such trade generated much profit and the traders were often viewed as marginal, suspicious and even fraudulent.

Originality/value – There is a distinct lack of research into the extent of and significance of medieval secondhand marketing, which existed in the shadowy margins of formal markets and is thus poorly represented in the primary sources. A broad-based approach to the evidence can highlight a variety of important issues, which impact upon the understanding of the medieval English economy.

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We report the discovery of a new transiting close-in giant planet, WASP-24 b, in a 2.341 day orbit, 0.037 AU from its F8-9 type host star. By matching the star's spectrum with theoretical models, we infer an effective temperature T eff = 6075 ± 100 K and a surface gravity of log g = 4.15 ± 0.10. A comparison of these parameters with theoretical isochrones and evolutionary mass tracks places only weak constraints on the age of the host star, which we estimate to be 3.8+1.3 –1.2 Gyr. The planetary nature of the companion was confirmed by radial velocity measurements and additional photometric observations. These data were fit simultaneously in order to determine the most probable parameter set for the system, from which we infer a planetary mass of 1.071+0.036 –0.038 M Jup and radius 1.3+0.039 –0.037 R Jup.

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PURPOSE:
To investigate whether variation in the distribution of the risk allele frequency of the Y402H single-nucleotide polymorphism (SNP) across various ethnicities and geographic regions reflects differences in the prevalence of late age-related macular degeneration (AMD) in those ethnicities.

METHODS:
Published data were obtained via a systematic search. Study samples were grouped into clusters by ethnicity and geographic location and the Spearman correlation coefficient of the prevalence of late AMD and risk allele frequencies was calculated across clusters.

RESULTS:
Across all ethnicities, AMD prevalence was seen to increase with age. Populations of European descent had both higher risk allele frequencies and prevalence of late AMD than did Japanese, Chinese, and Hispanic descendants. Results for African descendants were anomalous: although allele frequency was similar to that in European populations, the age-specific prevalence of late AMD was considerably lower. The correlation coefficient for the association between allele frequency and AMD prevalence was 0.40 (95% confidence interval [CI] = -0.36 to 0.84, P = 0.28) in all populations combined and 0.71 (95% CI = 0.02-0.94, P = 0.04) when people of African descent were excluded.

CONCLUSIONS:
Evidence was found at the population level to support a positive association between the Y204H risk allele and the prevalence of AMD after exclusion of studies undertaken on persons of African ancestry. Data in African, Middle Eastern, and South American populations are needed to provide a better understanding of the association of late AMD genetic risk across ethnicities.