Search Results
Results 151 - 200 of 704
1 2 3 4 5 6 7 8 9 10 >
Kissling Michelle L - - 2007
The Kittlitz's Murrelet (Brachyramphus brevirostris) is a rare, non-colonial seabird often associated with tidewater glaciers and a recent candidate for listing under the Endangered Species Act. We estimated abundance of Kittlitz's Murrelets across space and time from at-sea surveys along the coast of Alaska (USA) and then used these data ...
Wada Hidemi - - 2007
PURPOSE: Biliary atresia (BA) is the leading cause of obstructive jaundice in the newborn and the major indication for liver transplantation in Japan. Viral infection has been implicated in its etiology because of seasonality and space clustering. However, this has been controversial among whites. The present study investigates space-time clustering ...
Jønsson Viggo - - 2007
Rank order of affected offspring in a sibship can inform on epigenetic factors in disease susceptibility. Here we report an analysis of birth order in 32 families segregating chronic lymphocytic leukaemia (CLL) and other B-cell lymphoproliferative disorders. A paternal-offspring, but not a maternal-offspring birth rank order was observed. Cox regression ...
Dal Cin Valeriano - - 2007
The influence of internal and external factors such as tree fruit load and elevation on ethylene biosynthesis and action was assessed during apple fruit development and ripening. Ethylene biosynthesis, as well as transcript accumulation of the hormone biosynthetic enzymes (MdACS1 and MdACO1), receptors (MdETR1 and MdERS1) and an element of ...
Ciccolini M - - 2007
Radiative corrections of strong and electroweak interactions are presented at next-to-leading order for the production of a Higgs boson plus two hard jets via weak interactions at the CERN Large Hadron Collider. The calculation includes all weak-boson fusion and quark-antiquark annihilation diagrams as well as the corresponding interferences. The electroweak ...
Lozano-García Ma del Socorro Mdel - - 2007
The causes of late-Holocene centennial to millennial scale climatic variability and the impact that such variability had on tropical ecosystems are still poorly understood. Here, we present a high-resolution, multiproxy record from lowland eastern Mesoamerica, studied to reconstruct climate and vegetation history during the last 2,000 years, in particular to ...
Zucker Kenneth J - - 2007
Two biodemographic variables - birth order and sibling sex ratio - have been examined in several Western samples of homosexual transsexual men. The results have consistently shown that homosexual transsexuals have a later birth order and come from sibships with an excess of brothers to sisters; the excess of brothers ...
Jongbloet P H - - 2007
To determine the associations of fecundity and childlessness with month of conception and to find a causal mechanism for these associations, we reanalyzed some of our previous data according to the predictions of the seasonal optimal ripening oocyte (SOptRO) and seasonal preovulatory over-ripeness ovopathy (SPrOO) hypotheses. Prime and minor SOptRO ...
Henning J - - 2007
AIM: To describe the pathology of crypt abscesses in the caeca of feral rabbits in the Manawatu region of New Zealand, and to examine the possible relationship between their prevalence and rabbit haemorrhagic disease (RHD) virus (RHDV) infection. METHODS: During the course of a 3-year study of RHD, 173 wild ...
Hashemipour Mahin - - 2007
OBJECTIVE: To evaluate the seasonal variations in the incidence of congenital hypothyroidism (CH) in the screening program of CH in Isfahan, Iran. METHODS: In this study, we compiled the data obtained retrospectively from CH screening results of 113282 neonates from 17 maternity hospitals in Isfahan, Iran from June 2002 to ...
Pjrek Edda - - 2007
Recently we have published a report on seasonally varying birth rates in 553 patients with seasonal affective disorder (SAD). The present study is aimed to test the hypothesis of an idiosyncratic seasonal conception pattern of the parents of these patients to explain this phenomenon. We conducted a telephone interview with ...
Bird Nathan C - - 2007
Cypriniformes (which includes the minnows, carps, loaches, algae-eaters, stone loaches, and suckers) is a morphologically diverse and incredibly speciose order of teleosts. It has been suggested that a number of evolutionary innovations, key to improved hearing and feeding, have played an important role in cypriniform fishes' success. One such innovation, ...
Trevino Heather S - - 2007
Seasonality of reproduction is believed to be influenced by environmental factors such as humidity, temperature, and photoperiod. In primates, there has been much speculation about which environmental factors have the greatest influence on reproductive seasonality. To determine whether environmental factors affect seasonality of reproduction of squirrel monkeys in captivity, I ...
Rodgers Sarah E - - 2007
In the northeastern United States, risk of human exposure to tick transmitted disease is primarily a function of the abundance of the blacklegged tick, Ixodes scapularis Say. We assessed seasonal variability in the abundance of nymphal stage I. scapularis over 13 yr, collected from several forested areas throughout Rhode Island. ...
Ur Jason A - - 2007
It has been thought that the first cities in the Near East were spatially extensive and grew outward from a core nucleated village while maintaining a more or less constant density in terms of persons or households per unit of area. The general applicability outside of the Near East of ...
McCrink Koleen - - 2007
Human infants appear to be capable of the rudimentary mathematical operations of addition, subtraction, and ordering. To determine whether infants are capable of extracting ratios, we presented 6-month-old infants with multiple examples of a single ratio. After repeated presentations of this ratio, the infants were presented with new examples of ...
Cancho-Candela Ramón - - 2007
Several seasonal variations have been found in birth rates in different countries at different periods. The characteristics of the rhythmic patterns vary according to geographical location and chronological changes. This study presents data on spanish birth seasonality over six decades. A time series composed of 33,421,731 births in Spain in ...
Wichman Aaron L - - 2007
We address points raised by Zajonc and Sulloway, who reject findings showing that birth order has no effect on intelligence. Many objections to findings of null birth-order results seem to stem from a misunderstanding of the difference between study designs where birth order is confounded with true causal influences on ...
Ryan, SJ
We examined annual variation in the timing of conception and parturition in the African buffalo (<it>Syncerus caffer</it>) and the synchrony of birth timing with resource cues, using 8 years of monthly birth, rainfall, and vegetation data, measured as Normalized Difference Vegetation Index (NDVI). Monthly births had the strongest significant correlations ...
Atkins Natalia - - 2007
Niveoscincus microlepidotus, the southern snow skink, is a biennially reproducing alpine viviparous lizard with an extremely protracted gestation period: embryos are fully developed in autumn, but held over winter so that offspring are born in spring. The obvious benefits for offspring survival of delaying birth until spring have been demonstrated ...
Mensah F K - - 2007
Substantial heterogeneity has been observed among case-control studies investigating associations between non-Hodgkin's lymphoma and familial characteristics, such as birth order and sibship size. The potential role of selection bias in explaining such heterogeneity is considered within this study. Selection bias according to familial characteristics and socioeconomic status is investigated within ...
Postuma Ronald B - - 2007
Recent studies suggest that, for many adult-onset neurological diseases, persons born at a certain time of year are at higher risk of the disease. Small-scale studies have suggested that persons born in the spring may be at higher risk of developing Parkinson's disease (PD) late in life. There have also ...
Hawken P A R - - 2008
The ram effect is widely used in Mediterranean breeds of sheep but its use in temperate genotypes is restricted by breed seasonality. However, ewes from these highly seasonal genotypes are sensitive to stimulation by rams close to the onset of the natural breeding season. In this study we developed a ...
Butler Matthew P - - 2007
The timing of puberty is a critical life history trait of short-lived species; spring-born individuals mature rapidly and breed in the season of birth, whereas young born in mid- to late summer delay puberty until the next spring. The cues that govern the transition from rapid to delayed maturation in ...
Kallel Lassad - - 2007
Summer birth has been associated with the deficit Schizophrenia syndrome, while DSM-IV schizophrenia is associated with winter birth. We confirm these monthly differences in a Tunisian sample of patients with schizophrenia, with a summer birth peak (n=34 deficit patients) and an expected winter birth peak (n=46 non-deficit patients).
Vargas S - - 2007
Liveweight (LW) of does and bucks of the native Creole goat breed and crosses of Creole does and Nubian bucks, aged 1.5-5 years, were recorded and body traits including: head length (HL), head width (HW), body length (BL), trunk length (TL), chest girth (CG), abdominal perimeter (AP), rump length (RL), ...
Moore Jonathan W - - 2007
Organisms can control movements of nutrients and matter by physically modifying habitat. We examined how an ecosystem engineer, sockeye salmon (Oncorhynchus nerka), influences seasonal fluxes of sediments, nitrogen (N), and phosphorus (P) in streams of southwestern Alaska. The purpose of this study was to investigate whether salmon act as net ...
Moretti Rocco - - 2007
Nucleotidyltransferases are central to nearly all glycosylation-dependent processes and have been used extensively for the chemoenzymatic synthesis of sugar nucleotides. The determination of the NTP specificity of the model thymidylyltransferase RmlA revealed RmlA to utilize all eight naturally occurring NTPs with varying levels of catalytic efficiency, even in the presence ...
Scherb Hagen - - 2007
To investigate trends in the sex odds before and after the Chernobyl accident, gender-specific annual birth statistics were obtained from the Czech Republic, Denmark, Finland, Germany, Hungary, Norway, Poland, and Sweden between 1982 and 1992. For parts of Germany, annual birth statistics and fallout measurements after Chernobyl are available at ...
Quinn Thomas P - - 2007
The timing of migration from feeding to breeding areas is a critical link between the growth and survival of adult animals, their reproduction, and the fitness of their progeny. Commercial fisheries often catch a large fraction of the migrants (e.g., salmon), and exploitation rates can vary systematically over the fishing ...
Muzaffar Sabir B - - 2007
Questing behavior of Ixodes uriae and their associated seasonal, host-feeding patterns are crucial to our understanding of tick life history strategies and the ecology of diseases that they transmit. Consequently, we quantified questing behavior of nymphs and adult female I. uriae ticks at Gull Island, a seabird colony in Newfoundland, ...
Porcelli P J - - 2007
OBJECTIVE: Neonatal parenteral nutrition (PN) is designed for very low birth weight infants (BW < or = 1500 g) for whom enteral feedings are inadequate. Evaluating the clinical practice guidance (CPG) content of printed paper order forms could provide a baseline for comparison and serve as a reference for electronic ...
Kuzume Kazuyo - - 2007
While an exacerbation in allergic symptoms corresponding to seasons has long been reported, few studies have investigated the association between the season of birth and allergic disorders. The aim of this study was to investigate whether the climatologic data before and after birth affected the incidence of atopic dermatitis (AD) ...
Dawson Alistair - - 2007
Birds use photoperiod to control the time of breeding and moult. However, it is unclear whether responses are dependent on absolute photoperiod, the direction and rate of change in photoperiod, or if photoperiod entrains a circannual clock. If starlings (Sturnus vulgaris) are kept on a constant photoperiod of 12h light:12h ...
Gaughran Fiona - - 2007
A proposed risk factor for schizophrenia is materno-foetal incompatibility. We tested the hypothesis that, in multiply affected families, later born children would exhibit a more severe form of schizophrenia than their older siblings. The effect of birth order on (1) severity of the worst ever episode of illness; (2) deterioration ...
Joo Yeon Ho - - 2007
There have been numerous studies on the association between 5-HTTLPR (polymorphisms in the promoter region of the serotonin transporter gene) and anxiety-related personality traits, with conflicting results. In this study, we administered Korean version of the Temperament and Character Inventory (K-TCI) to a sample of 158 Korean college students and ...
Baiden R Y - - 2007
A study was conducted on 441 West African Dwarf goat (WADG) kids born from September 1999 to August 2002 at three locations in the Dangme West District of the Greater Accra Region in Ghana to determine the effect of environmental factors on birth weight, birth type and pre-weaning survivability. The ...
Magnuson Anders - - 2007
AIMS: Ecological studies have demonstrated that when national economies contract the proportion of male live births is reduced. It has been suggested that the relative disadvantage this causes influences sex ratio among births. Here the authors use individual data to investigate whether there is a persistent association of father's occupation ...
Hannu Timo - - 2007
The season of birth has been suggested to influence the development of some diseases, but its role in lung fibrosis seems to not have been studied previously. The aim of this study was to investigate the relation between the season of birth and fibrotic abnormalities as detected radiologically in high-resolution ...
Melnikov Vladimir N - - 2007
OBJECTIVE: To examine which months are unfavourable for conception in the region with the severe continental climate. DESIGN: Retrospective population based study. METHODS: Monthly data on incidence rate for gestose, maternal anaemia, pyelonephritis, threat to spontaneous abortion, stillbirth, perinatal death and infant death at age under one year were extracted ...
Chadee D D - - 2007
Between January 2002 and December 2004, a population-based study on the effects of climate and mosquito indices on the incidences of dengue fever (DF) and dengue haemorrhagic fever (DHF) was conducted in Trinidad, West Indies. The incidence of DF was 5.05 cases/1000 population in 2002, largely as the result of ...
Graf N - - 2007
BACKGROUND: The first months of life may represent a vulnerable period in the development of atopic diseases. The objective of this study was to examine the relationship between the month of birth and the development of birch and grass pollen allergy in the Swiss population. METHODS: Data from the Swiss ...
Marshall Dustin J - - 2007
Intraspecific variation in offspring size is of fundamental ecological and evolutionary importance. The level of provisioning an organism receives from its mother can have far reaching consequences for subsequent survival and performance. In marine systems, the traditional focus was on the remarkable variation in offspring size among species but there ...
McGrath John - - 2007
Birth weight and length have seasonal fluctuations. Previous analyses of birth weight by latitude effects identified seemingly contradictory results, showing both 6 and 12 monthly periodicities in weight. The aims of this paper are twofold: (a) to explore seasonal patterns in a large, Danish Medical Birth Register, and (b) to ...
Calmet M - - 2006
In judo, making the opponent uncertain requires the mastery of several throws in 3 or 4 different directions and a firm grasp to secure the throw. The system of attacks for 28 judoka (18 men, 10 women) during their 185 respective matches over the competition season of 2001-2002 was analyzed. ...
Onyiriuka A N - - 2006
OBJECTIVE: To examine the relationship, if any, between the geographical season in which a baby is born and the baby's birth weight and sex. METHODS: The birth weights and sexes of 6141 babies delivered over a five- year period in a Nigerian mission hospital were prospectively recorded according to the ...
Gallagher Bernard J BJ - - 2007
OBJECTIVE: The neurodevelopmental model of schizophrenia includes the etiological impact of fetal brain stressors possibly connected with birth seasonality. Specification of social class of origin (SES) as a related risk factor remains unexamined as does type of schizophrenia as an outcome variable. The objective of this study was to test ...
Lee S J - - 2006
OBJECTIVE: The objectives of this study included a systematic review of the countries in which a seasonal pattern of preterm birth has been reported and an analysis on the seasonal variability of preterm birth in a London-based cohort. DESIGN: Cross-sectional study. SETTING: Eighteen maternity units in a London health region ...
Messias Erick - - 2006
Although the association of schizophrenia and winter birth has been replicated many times in the Northern hemisphere, studies in the Southern hemisphere have been less consistent in their findings. A study from NE Brazil indicated the period between May and July, 3 months after the peak in rainfall, as a ...
Wang Yi - - 2006
The contents of ginsenosides in Panax ginseng not only vary in different parts of the root, but also exhibit yearly variation. In this study, an HPLC-MS method was established in order to simultaneously analyse ginsenosides Rb1, Rb2, Rb3, Rc, Rd, Re, Rf, Rg1 and Rg2. The concentration of ginsenosides in ...
1 2 3 4 5 6 7 8 9 10 >