Results 41 to 50 of about 1,002,818 (199)

Maize (Zea mays L.) Productivity and Nitrogen Use Efficiency in Response to Nitrogen Application Levels and Time

open access: yesFrontiers in Plant Science, 2022
Productivity of maize (Zea mays L.) and nitrogen use efficiency (NUE) as affected by nitrogen application levels and timing were studied. The experimental design was a three-replication randomized complete block design (RCBD).
E. M. S. Gheith   +9 more
doaj   +1 more source

Optimal waiting period for frozen embryo transfer after hysteroscopic polypectomy: A propensity score matching analysis

open access: yesFrontiers in Endocrinology, 2022
ObjectiveTo evaluate the optimal waiting period for frozen-thawed embryo transfer (FET) after hysteroscopic polypectomy (HSC-P).DesignRetrospective cohort.SettingUniversity-affiliated hospital.Patient(s)All patients included in this research underwent ...
Bijun Wang   +9 more
doaj   +1 more source

Time Budgets and Time Use [PDF]

open access: yesSSRN Electronic Journal, 2009
Some of the earliest time use surveys (TUS) were conducted in Russia by Strumilin in 1924 and the United States (Sorokin & Berger, 1939). The Vienna Centre and UNESCO sponsored the first purpose-designed multinational comparative time budget data collection, which was carried out in the mid 1960s (Szalai, 1972).
Teresa Harms, Jonathan Gershuny
openaire   +4 more sources

Beyond Lux: methods for species and photoreceptor-specific quantification of ambient light for mammals

open access: yesBMC Biology
Background Light is a key environmental regulator of physiology and behaviour. Mistimed or insufficient light disrupts circadian rhythms and is associated with impaired health and well-being across mammals.
Richard J. McDowell   +8 more
doaj   +1 more source

Early versus late DNR orders and its predictors in a Saudi Arabian ICU: A descriptive study

open access: yesSaudi Journal of Medicine and Medical Sciences, 2022
Background: Practices of Do-Not-Resuscitate (DNR) orders show discrepancies worldwide, but there are only few such studies from Saudi Arabia. Objective: To describe the practice of DNR orders in a Saudi Arabian tertiary care ICU.
Waleed Tharwat Aletreby   +9 more
doaj   +1 more source

A time to print, a time to reform

open access: yesEuropean Economic Review, 2021
The public mechanical clock and movable type printing press were arguably the most important and complex technologies of the late medieval period. We document two of their most important, yet unforeseeable, consequences. First, towns that were early adopters of clocks were more likely to also be early adopters of presses.
Battista Severgnini   +3 more
openaire   +6 more sources

Inherent Trade-Offs Between the Conflicting Aspects of Designing the Compact Global Navigation Satellite System (GNSS) Anti-Interference Array

open access: yesRemote Sensing
The Global Navigation Satellite System (GNSS) has emerged as a critical spatiotemporal infrastructure for ensuring the integrity of remote sensing data links. However, traditional GNSS antenna arrays, typically configured with the antenna spacing of half
Xiangjun Li   +5 more
doaj   +1 more source

Consideration of GLONASS Inter-Frequency Code Biases in Precise Point Positioning (PPP) International Time Transfer

open access: yesApplied Sciences, 2018
International time transfer based on Global Navigation Satellite System (GLONASS) precise point positioning (PPP) is influenced by inter-frequency code biases (IFCBs) because of the application of frequency division multiple access technique.
Yulong Ge   +5 more
doaj   +1 more source

A survey of GNSS receiver autonomous integrity monitoring: Research status and opportunities

open access: yesFrontiers in Physics
Integrity monitoring is crucial in applications closely related to the safety of human life and property, such as aviation, maritime navigation, autonomous driving, and rail transportation.
Zhen Huang   +10 more
doaj   +1 more source

Experience Creates the Multisensory Transform in the Superior Colliculus

open access: yesFrontiers in Integrative Neuroscience, 2020
Although the ability to integrate information across the senses is compromised in some individuals for unknown reasons, similar defects have been observed when animals are reared without multisensory experience.
Zhengyang Wang   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy