Results 51 to 60 of about 11,316,946 (214)

Intercomparison of carbon‐13 and carbon‐14 tracer approaches for estimating marine calcification and net primary production

Limnology and Oceanography: Methods, EarlyView.
Abstract Accurate measurements of phytoplankton net primary production (NPP) and calcification are essential for quantifying marine carbon cycling, yet in situ calcification rates remain poorly constrained. We compared 13C‐ and 14C‐based tracer methods for NPP in laboratory cultures of the diatom Chaetoceros tenuissimus and the coccolithophore ...
Chloe L. Smith, Austin Grubb, Kay D. Bidle, Kimberlee Thamatrakoln, Adam V. Subhas   +4 more
wiley   +1 more source

Linear Mechatronic Modeling of Rectangular Tank Sloshing Dynamics

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Sloshing dynamics in partially filled tanks can strongly influence system‐level behavior when fluid motion couples with rigid‐body dynamics. This paper presents a linear and acausal two‐dimensional sloshing model for rectangular tanks, based on the reformulation of established sloshing theory within a modular, multi‐domain modeling framework ...
Magnus Steinstø, Eilif Pedersen
wiley   +1 more source

Ballast water: a review of the impact on the world public health

Journal of Venomous Animals and Toxins including Tropical Diseases, 2008
Since the nineteenth century ships have been using ballast water (BW) for safety, stability, propulsion and maneuverability, as well as to redress loss of fuel weight and water consumption, and to maintain structural stress at acceptable levels.
CK Takahashi, NGGS Lourenço, TF Lopes, VLM Rall, CAM Lopes   +4 more
doaj   +1 more source

An Anisotropic Constitutive Model for Crushable Geomaterials Based on Non‐Stationary Critical State Line Concept

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT In this paper, the dependencies of granular soil behaviour on particle crushing and fabric anisotropy are formulated within a novel model based on bounding surface plasticity theory enriched by the non‐stationary critical state line (NCSL) concept.
Hesam Dejaloud, Hamed Taghavizade, Mohammad Rezania   +2 more
wiley   +1 more source

Optimum conditions for high-speed solid–liquid separation by ballasted flocculation

Water Science and Technology, 2023
In the ballasted flocculation, high-speed sedimentation of suspensions is achieved using a microsand as a ballast material and a polymer flocculant combined with microflocs made of polyaluminum chloride (PAC) as an inorganic coagulant.
Yoshihiro Suzuki, Ryosuke Kaku, Katsuya Takahashi, Miyuka Kanai, Soichiro Tamai, Yuko Annaka, Nobuaki Chuganji   +6 more
doaj   +1 more source

Biodosimetric Studies for Ballast Water Treatment [PDF]

Journal of Physics: Conference Series, 2019
Abstract Ultraviolet (UV) reactor for ballast water treatment is investigated in this paper. Experimental and numerical simulations are performed for a base reactor named LBW850e. B. Pumilus is chosen as a challenge organism in the experiments.
H.Y. Li, H. Osman, C.W. Kang, J. Lou, T. Ba   +4 more
openaire   +1 more source

The Return of the Allis Shad (Alosa alosa) to the Lower Navigable Reaches of the Seine: Locks Play a Role

River Research and Applications, EarlyView.
ABSTRACT In France, it is estimated that shads (Alosa spp.) have lost 69% of their historical range, mainly due to disrupted river connectivity. After an absence of one century, signs of their return in the Seine River have been recorded over the past two decades: adult and juvenile specimens have been caught by anglers or recorded at video‐counting ...
Céline Le Pichon, Frédérique Bau, Armand Michelot, Evelyne Tales, Sébastien Grall, Eric Rochard   +5 more
wiley   +1 more source

Retrofitting Ballast Water Treatment System: A Container Ship Case Study

Chemical Engineering Transactions
The utilization of ballast water in ships is known to have detrimental effects on the marine environment, leading to economic losses, ecological harm and potential risks to human health.
Shahrul Miza Mahmud, Lai F. Chuah, Wan Mohd Norsani Wan Nik, Anuar Abu Bakar, Mohd Azlan Musa   +4 more
doaj   +1 more source

Sustainable Development Goals Applied to the Maritime Transportation Sector: Setting Sail for the Future

Natural Resources Forum, EarlyView.
ABSTRACT The 2030 Agenda for Sustainable Development aims to eradicate poverty, protect the environment, and promote prosperity through 17 Sustainable Development Goals (SDGs). Achieving these goals requires a multi‐sectoral approach. Maritime transportation, vital to the global economy, significantly contributes to several SDGs and plays a strategic ...
Cátia Sousa, Ana Brasão, Tiago Silva, Stanislau Tserashkovich   +3 more
wiley   +1 more source

Disinfection by-products in ballast water treatment: An evaluation of regulatory data

, 2012
To reduce the global spread of invasive aquatic species, international regulations will soon require reductions of the number of organisms in ballast water discharged by ships. For this purpose, ballast water treatment systems were developed and approved
Sommer,Y., Werschkun,B., Banerji,S.
core   +1 more source