نتایج جستجو برای: reproductive number

تعداد نتایج: 1251317  

2017
Moon-Sub Lee Andrew Wycislo Jia Guo D. K. Lee Thomas Voigt

Grasses such as Miscanthus ×giganteus and Panicum virgatum (switchgrass) can potentially be used to produce bioenergy on a large scale in the Midwestern USA. The biomass productivity of these warm-season perennial grasses, particularly M. × giganteus, can be substantial, even when grown with limited inputs. The literature, however, varies regarding the nitrogen requirements for M. ×giganteus bi...

2014
Fatemeh Nozhat Sanaz Alaee Khodabakhsh Behzadi Najmeh Azadi Chegini

OBJECTIVE In this study we investigated the effects of spearmint (Mentha spicata Labiatae) on the reproductive system, fertility and number of offspring in adult male rats. MATERIALS AND METHODS Adult Wistar male rats in one control (C) and three experimental groups (I, II and III) received 0, 10, 20 and 40 mg/kg spearmint extract orally for 45 days, respectively. Following this treatment, th...

In order to evaluate the role of paclobutrazol (PBZ) and prohexadione-calcium (ProCa) in reduction of vegetative growth and improvement of reproductive growth of strawberry (cultivar Paros), a 4-replicate completely randomized design was carried out in greenhouse. ProCa in three concentrations of 0, 100 and 150 mg L-1 and PBZ in four concentrations of 0, 60, 90 and 120 mg L-1 were sprayed on th...

Journal: :Proceedings. Biological sciences 2001
T A Oksanen P Jonsson E Koskela T Mappes

The number of offspring attaining reproductive age is an important measure of an individual's fitness. However, reproductive success is generally constrained by a trade-off between offspring number and quality. We conducted a factorial experiment in order to study the effects of an artificial enlargement of offspring number and size on the reproductive success of female bank voles (Clethrionomy...

2018
Y. Wang X. Ding Z. Tan K. Xing T. Yang Y. Pan S. Mi D. Sun C. Wang

Using the PorcineSNP80 BeadChip, we performed a genome-wide association study for seven reproductive traits, including total number born, number born alive, litter birth weight, average birth weight, gestation length, age at first service and age at first farrowing, in a population of 1207 Large White pigs. In total, we detected 12 genome-wide significant and 41 suggestive significant SNPs asso...

2005
M K. C

A .—We studied the relationships among weather, reproductive success, and population density over 21 years (1980–2000) in a resident Song Sparrow (Melospiza melodia) population in coastal scrub habitat. Our goals were to test potential relationships between annual variation in weather and reproductive success, to evaluate whether reproductive success is density dependent, and to explore the eff...

Journal: :Genetics 2011
Nicholas H Barton Alison M Etheridge

What determines the genetic contribution that an individual makes to future generations? With biparental reproduction, each individual leaves a "pedigree" of descendants, determined by the biparental relationships in the population. The pedigree of an individual constrains the lines of descent of each of its genes. An individual's reproductive value is the expected number of copies of each of i...

Journal: :Journal of physics 2021

The present investigation reviews the potential causes of novel Corona virus (COVID-19) spread based on various parameters studied. At onset COVID-19 pandemic there were number that believed to be dominating factor, and demand scenario is determine variables enhances transmission. social distancing main weapon fight against coronavirus, keeping this in mind impact mobility analyzed. In addition...

Aminin ALN, Istianah I Lestari EU Sukarsono S

Background: Grass Kebar (Biopytum petersianum Klotzch) is one of Indonesian medicinal plants, which can only be found in Kebar sub-district, Manokwari, Irian Jaya. This plant is mainly used by the community Manokwari to maintain the fertility of women of reproductive organs. This study aims to determine the effect of extract Grass Kebar dose on the fertility of the uterus and the number of prog...

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