Results 81 to 90 of about 14,305 (291)

Precession and Nutation in the eta Carinae binary system: Evidences from the X-ray light curve

open access: yes, 2009
It is believed that eta Carinae is actually a massive binary system, with the wind-wind interaction responsible for the strong X-ray emission. Although the overall shape of the X-ray light curve can be explained by the high eccentricity of the binary ...
Abraham   +32 more
core   +1 more source

The Cost of a Nutritious Diet in Cafeterias: Evidence From US Military Dining Facilities

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT Providing nutritious meals in institutional settings with financial constraints, such as military dining facilities, is challenging. The US Department of War (DoW) and US Department of Agriculture (USDA) collaborated to modernize the Basic Daily Food Allowance (BDFA) using an optimization model that incorporates service members' consumption ...
Linlin Fan   +8 more
wiley   +1 more source

摆线针轮章动传动的齿廓分析

open access: yesJixie chuandong, 1997
This paper analyzes the profile curve of cycloid nutation gear by using the spherical trigonometry theory,derives relative profile equation,and presents the basic parameters and main measurement.All of this are the necessary basis for cycloid nutation ...
何韶君, 赵清
doaj  

Precession-Nutations and Tidal Potential [PDF]

open access: yesInternational Astronomical Union Colloquium, 1971
We have previously established (Melchior and Georis, 1968) the equations connecting the development of precession-nutation with the tesseral part of the tidal potential. These equations are:whereωiAirespectively represent the frequencies and amplitudes of the tidal waves, ω the Earth’s rotation velocity,
openaire   +1 more source

Does Contract Farming Improve Diet Quality? The Case of Senegalese Smallholders

open access: yesAgribusiness, EarlyView.
ABSTRACT The institution of contract farming has gained prominence in most developing countries owing to its numerous benefits. While several studies have already highlighted the welfare benefits of contract farming, very few have investigated the effects on diet quality, despite poor quality diets being a serious challenge in most parts of the ...
Francis E. Ndip, Takeshi Sakurai
wiley   +1 more source

Nutation damping of dynamically tuned gyroscopes

open access: yesMATEC Web of Conferences, 2017
The paper deals with the problem of nutation damping of dynamically tuned gyroscopes (DTG). Unlike the common two-axis gyroscopes, the DTG damping torques caused by dry and viscous frictions are absent in gimbal bearings, while those due to the rotor ...
Belyanin Lev, Vu Doan Ket
doaj   +1 more source

Passive dual spin misalignment compensators [PDF]

open access: yes, 1974
A combination dual-spin gyroscopically stabilized device is described having a spinning rotor and a non-spinning platform. Two substantially lossless mechanical resonators, resonant at the spin frequency, are orthogonally positioned on the platform for ...
Donohue, J. H., Zimmerman, B. G.
core   +1 more source

India–United States Agricultural Trade Under the America‐First Agenda

open access: yesAgribusiness, EarlyView.
ABSTRACT This article examines India–United States agricultural trade under the America‐First agenda, highlighting trade patterns, tariff structures, and potential impacts of United States trade policies. Total agricultural trade remains modest at $7 billion annually, with India imposing higher tariffs (average 39%) than the United States (5%).
Badri N. Gopalakrishnan   +2 more
wiley   +1 more source

Astrometry and geodesy with radio interferometry: experiments, models, results

open access: yes, 1997
Summarizes current status of radio interferometry at radio frequencies between Earth-based receivers, for astrometric and geodetic applications. Emphasizes theoretical models of VLBI observables that are required to extract results at the present ...
Aoki, S.   +176 more
core   +2 more sources

Traceability of Agri‐Food Products: The Key to Conscious Trade

open access: yesAgribusiness, EarlyView.
ABSTRACT Globalization and growing concerns about sustainability have led to improvements in product traceability, quality, and sustainability. Traceability contributes to environmental protection and supports sustainable development by fostering transparency in agricultural practices and encouraging the responsible use of resources.
Scarlett Queen Almeida Bispo   +5 more
wiley   +1 more source

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