Results 21 to 30 of about 20,108,567 (392)
Primary production of the biosphere: integrating terrestrial and oceanic components
Science, 1998 Integrating conceptually similar models of the growth of marine and terrestrial primary producers yielded an estimated global net primary production (NPP) of 104.9 petagrams of carbon per year, with roughly equal contributions from land and oceans ...
C. Field +3 more
semanticscholar +1 more source
BMC Public Health, 2018 Background Attitude and subjective well-being are important factors in mothers accepting or rejecting Oral Polio Vaccine (OPV) supplemental immunization.
Gregory C. Umeh +7 more
doaj +1 more source
Conflict and Health, 2023 Background Currently, over two million persons are internally displaced because of the complex humanitarian emergency in Nigeria’s northeast region. Due to crowded and unsanitary living conditions, the risk of communicable disease transmission, morbidity,
Saheed Gidado +17 more
doaj +1 more source
The influence of the geomagnetic field and of the uncertainties in the primary spectrum on the development of the muon flux in the atmosphere [PDF]
, 2004 In this paper we study the sensitivity of the flux of atmospheric muons to uncertainties in the primary cosmic ray spectrum and to the treatment of the geomagnetic field in a calculation.
A. Fasso +19 more
core +2 more sources
Terrestrial gross primary production: Using NIRV to scale from site to globe
Global Change Biology, 2019 Terrestrial photosynthesis is the largest and one of the most uncertain fluxes in the global carbon cycle. We find that near‐infrared reflectance of vegetation (NIRV), a remotely sensed measure of canopy structure, accurately predicts photosynthesis at ...
Grayson Badgley +3 more
semanticscholar +1 more source
Journal of Interventional Epidemiology and Public Health, 2023 Introduction: Perinatal mortality comprises of the total number of stillbirths and deaths within the first seven days of life. Kwekwe District reported a 59.92% increase in perinatal deaths from 247 in 2017 to 395 in 2020.
Nyashadzashe Cosmas Makova +5 more
doaj +1 more source
Complex Receptive Fields in Primary Visual Cortex [PDF]
The Neuroscientist, 2003 In the early 1960s, Hubel and Wiesel reported the first physiological description of cells in cat primary visual cortex. They distinguished two main cell types: simple cells and complex cells. Based on their distinct response properties, they suggested that the two cell types could represent two consecutive stages in receptive-field construction ...
Luis M, Martinez, Jose-Manuel, Alonso
openaire +2 more sources
Malaria Journal, 2022 Background Malaria is a leading cause of morbidity and mortality among forcibly displaced populations, including refugees, approximately two-thirds of whom reside in malaria endemic regions.
Kudzai Patience Takarinda +6 more
doaj +1 more source
Optimal collimation of misaligned optical systems by concentering primary field aberrations.
Optics Express, 2010 A collimation method of misaligned optical systems is proposed. The method is based on selectively nullifying main alignment-driven aberration components.
Hanshin Lee
semanticscholar +1 more source
BMC Public Health, 2022 Background Edo State Surveillance Unit observed the emergence of a disease with “no clear-cut-diagnosis”, which affected peri-urban Local Government Areas (LGAs) from September 6 to November 1, 2018.
E. Nwachukwu William +25 more
doaj +1 more source