Results 11 to 20 of about 105,510 (363)

Project Selection and Transparency Factors in Housing Public-Private Partnerships in Nigeria

open access: yesConstruction Economics and Building, 2018
The application of Public-Private Partners (PPPs) in housing provisioning is on the increase across the world. However, there is a paucity of empirical studies on the specific factors considered at the initiation, and measures taken to ensure ...
Eziyi Offia Ibem   +2 more
doaj   +1 more source

Relationships between Flower Opening Time, Environmental Conditions, Corolla Opening Size and Nectar Production in Five Winter Oilseed Rape (Brassica napus L.) Cultivars in China

open access: yesJournal of Apicultural Science, 2023
Oilseed rape is an economically important crop and provides a good nectar resource. In this study, the nectar secretion characteristics of five winter oilseed rape (Brassica napus L.) cultivars in China were examined throughout the daytime.
Liu Ran   +6 more
doaj   +1 more source

THE LITTLE BABY CLASS BALLERINAS: A DISCUSSION ABOUT GENDER THROUGH BALLET

open access: yesDemetra, 2016
A dança sempre esteve presente na história da humanidade. Na sua forma mais antiga, as danças sagradas foram vivenciadas em diversos rituais. O balé surge mais recentemente permeado de fantasia, romance e misticismo, influenciando a estética do corpo do ...
Larissa Escarce Bento Wollz   +2 more
doaj   +1 more source

Nectar and oleiferous trichomes as floral attractants in Bulbophyllum saltatorium Lindl. (Orchidaceae) [PDF]

open access: yes, 2017
Although many Orchidaceae have deceit flowers that produce no reward, the most common reward, when present, is nectar. Bulbophyllum, however, is unusual in that the labellar secretions of most species investigated to date lack sugars, and, therefore ...
Davies, Kevin L.   +2 more
core   +1 more source

Forager bees (Apis mellifera) highly express immune and detoxification genes in tissues associated with nectar processing. [PDF]

open access: yes, 2015
Pollinators, including honey bees, routinely encounter potentially harmful microorganisms and phytochemicals during foraging. However, the mechanisms by which honey bees manage these potential threats are poorly understood.
Johnson, Brian R   +2 more
core   +1 more source

Comparison of sugars, iridoid glycosides and amino acids in nectar and phloem sap of Maurandya barclayana, Lophospermum erubescens, and Brassica napus. [PDF]

open access: yesPLoS ONE, 2014
BACKGROUND: Floral nectar contains sugars and amino acids to attract pollinators. In addition, nectar also contains different secondary compounds, but little is understood about their origin or function. Does nectar composition reflect phloem composition,
Gertrud Lohaus, Michael Schwerdtfeger
doaj   +1 more source

Use of Spotted Knapweed/Star Thistle (Asterales: Asteraceae) as the Primary Source of Nectar by Early Migrating Monarch Butterflies (Lepidoptera: Nymphalidae) from Beaver Island, Michigan [PDF]

open access: yes, 2019
Recent observations over the past decade suggest that the invasive star thistle (aka spotted knapweed (Centaurea stoebe L.) provides much of the nectar that supports monarch butterflies (Danaus plexippus) in their pre-migratory and early migratory flight
Douglas, Matthew M
core   +2 more sources

The Use of an Anthrone Reagent to Detect Sugar Meals and Their Persistence in the Mosquito \u3ci\u3eAedes Triseriatus\u3c/i\u3e (Diptera: Culicidae) [PDF]

open access: yes, 2017
Adults of Aedes triseriatus were fed water, blood, and 10% pure and mixed solutions of glucose, fructose and sucrose. Adults were tested for fructose by the cold-anthrone test 0, 1, 4, 12, and 24 h after feeding. Water-fed males and females and blood-fed
Kurtz, Richard M, Smith, Stephen M
core   +2 more sources

Local and landscape effects of field margins on aerially dispersing beneficial insects and spiders [PDF]

open access: yes, 2011
Field margins were implemented in UK agri-environment schemes with the aim to increase farmland biodiversity. Recently aerially dispersing aphid enemies have been shown to provide the majority of aphid control in winter wheat fields but there is a lack ...
Oaten, Heather, Oaten, Heather
core   +1 more source

The role of jasmonates in floral nectar secretion. [PDF]

open access: yesPLoS ONE, 2010
Plants produce nectar in their flowers as a reward for their pollinators and most of our crops depend on insect pollination, but little is known on the physiological control of nectar secretion.
Venkatesan Radhika   +3 more
doaj   +1 more source

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