نتایج جستجو برای: life table experiments

تعداد نتایج: 1319531  

Journal: :Revista Brasileira de Estudos de População 2021

Ideally, life expectancy should be a decreasing function of age. When this fact is not observed, situation known as the table paradox. This paper investigated timing (and health metrics at time) in which Brazil and its Federation Units (FU) overcame (or are expected to overcome) The data were gathered from Brazilian Institute Geography Statistics contained 3,416 sex-specific abridged tables, 20...

2016
Gertrude N. Kerby

sorts. Still more important and hopeful is the tendency through freer methods to give children an opportunity of pursuing their daily activities of work and play in such a way as to allow them unconsciously to find and maintain their own rhythm, physical, emotional, and intellectual. The various experiments in the schools of to-day, where a " free time-table " within the bounds of law and order...

2016
Ornulf Borgan

Life expectancies at birth are routinely computed from period life tables. Such period life expectancies may be distorted by selection when comparing countries where the living conditions improved earlier (like Norway and Sweden) with countries where they improved later (like Italy and Japan). One way to get a fair comparison between the countries, is to use cohort data and consider the expecte...

Journal: :کنترل بیولوژیک آفات و بیماری های گیاهی 0
فرنوش فلاح پور دکتری بوم شناسی زراعی، گروه زراعت دانشکدة کشاورزی، دانشگاه فردوسی مشهد رضا قربانی استاد گروه زراعت دانشکدة کشاورزی، دانشگاه فردوسی مشهد مهدی نصیری محلاتی استاد گروه زراعت دانشکدة کشاورزی، دانشگاه فردوسی مشهد مجتبی حسینی استادیار گروه گیاه پزشکی دانشکدة کشاورزی، دانشگاه فردوسی مشهد

the host plant quality not only influences on herbivorous insects but also indirectly could impact on their natural enemies’ performance. the current study was conducted to determine the effect of different nitrogen fertilization levels of canola (brassica napus l.) on life table parameters of the predatory gall midge, aphidoletes aphidimyza rondani; diptera: cecidomyiidae, in feeding of mustar...

Journal: :نامه انجمن حشره شناسی ایران 0
e. soleiman nejadian s. manzari p. shishehbor l. fekrat

an investigation was carried out to study the developmental time, reproduction and life table of three populations of the onion thrips, thrips tabaci lindeman, on onion (khorasan and golestan populations) and also on tobacco (mazandaran population) in the laboratory at 25â°c, 50% rh and 16: 8 h l: d. the total life cycle from egg to adult of khorasan, golestan and mazandaran populations were ga...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده کشاورزی 1392

به منظور مطالعه پارامترهای ژنتیکی صفات طول عمر اقتصادی گوسفند کردی از رکوردهای 7469 حیوان حاصل از 187 پدر و 2258 مادر، استفاده گردید. اثرات ثابت شامل جنس و تیپ تولد بعد از تست معنی داری انتخاب و مورد استفاده قرار گرفتند. جداول طول عمر تولیدی هم با استفاده از رویه life table نرم افزار sas استخراج شد. طبق نتایج به دست آمده حدود 99 درصد از میش های پرورشی به دلایل دیگری به جز سنشان از گله حذف شده ا...

Experiments were conducted to evaluate the response of different originated (the same mother plants with different growers from different cities in Ethiopia) cut rose flowers to various relative humidity (RH) and recut (recut and non-recut). Three different experiments (E1, E2 and E3) using three RH (60, 75 and 90%) and three Ethiopian growing areas (Fleur, Liki and Longonot) with 10 replicatio...

ژورنال: علوم آب و خاک 2004
حسین سیدالاسلامی, , مرجان خلیلی ماهانی, , بیژن حاتمی, ,

Elm leaf beetle, Xanthogaleruca luteola (Müller), life and fertility tables were investigated under laboratory conditions (25±2°C, 70±5%R.H. and 16L: 8D), on Ulmus carpinifolia, U.c.var.umbraculifera, U. glabra var. pendula and Celtis caucasica, in spring and summer. Since the experiments were conducted under controlled conditions, feeding on hosts with different nutritional qualities was consi...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید