An 8-yr study was conducted to better understand factors influencing year-to-year variability in field-scale herbicide volatilization and surface runoff losses. The 21-ha research site is located at the USDA-ARS Beltsville Agricultural Research Center in Beltsville, MD. Site location, herbicide formulations, and agricultural management practices remained unchanged throughout the duration of the...

* Every day, in various forms, emergency physicians and their patients face the question: how safe is safe enough? Is the risk of something bad low enough that it is reasonable to neglect it [1]? Acute chest pain is a daily challenge and even more so for doctors on cruise ships at sea who face additional questions: is the cause something that can be treated aboard, and if not, what can be done ...

Introduction: For 10 years, Brazil has presented a significant flow in cruise ships with 597 011 travelers in 2015. Cruise ships represent a major mass gathering capacity, generating more risk of outbreaks and epidemics. Moreover, visiting several places presents travelers with the possibility of contact with some tropical diseases, which demands the development of specific pol...

In late 2010, Barbados Port Inc. (BPI) selected the Sugar Point team, a joint venture of SMI Infrastructure Solutions and Royal Caribbean Cruise Lines (RCCL), to undertake a Front End Engineering Design (FEED) study for a new cruise ship terminal adjacent to the existing Port of Bridgetown. The proposed new facility has been designed to accommodate the largest cruise ships in the world (RCCL’s ...

The impact of light and nutrients (such as silicate and iron) availability on nitrogen uptake and primary production vary seasonally and regionally in the Southern Ocean. The seasonal cycle of nitrogen uptake by phytoplankton in the Southern Ocean is not fully resolved over an annual scale due to the lack of winter in situ measurements. In this study, nitrate and ammonium uptake rates were meas...

Reniform nematode (Rotylenchulus reniformis) resistance is being transferred to Gossypium hirsutum from its distant relatives. Reports of fluometuron damage to LONREN lines with nematode resistance from G. longicalyx raised concerns about introducing herbicide sensitivity from other nematode resistance sources. The research objective was to evaluate 15 sources of reniform nematode resistance fo...

[1] Data analysis and numerical simulations were used to examine vertical transport of cruise‐altitude commercial aircraft emissions to the surface. First, aircraft emission data were compared with static stability and potential temperature data from satellites. Second, we ran global 3‐D simulations of a passive tracer released uniformly at 11 km (cruise altitude). We present global, regional, ...

C. Alister, M. Araya, and M. Kogan. 2011. Effects of physicochemical soil properties of five agricultural soils on herbicide soil adsorption and leaching. Cien. Inv. Agr. 38(2): 243-251. Once pesticides reach the soil, there are several factors that affect their soil behavior. To identify the principal soil and herbicide properties that control their adsorption and leaching, a study of five Chi...

Options for elderly patients who can no longer remain independent are limited. Most choices involve assisted living facilities, 24-hour caregivers, or nursing homes. State and federal assistance for payment for individual care is limited, and seniors usually pay for most costs out of pocket. For those patients who have the means to afford assisted living centers or nursing homes, "cruise ship c...

Example: design a cruise control system After gaining an intuitive understanding of the plant's dynamics and establishing the design objectives, the control engineer typically solves the cruise control problem by doing the following: 1. Developing a model of the automobile dynamics (which may model vehicle and power train dynamics, tire and suspension dynamics, the effect of road grade variatio...