Results 11 to 20 of about 10,110 (292)

A Novel Meta-Heuristic Algorithm for Numerical and Engineering Optimization Problems: Piranha Foraging Optimization Algorithm (PFOA)

IEEE Access, 2023
This paper provides a novel meta-heuristic optimization algorithm for solving continuous optimization problems efficiently in the field of numerical and engineering optimization: Piranha Foraging Optimization Algorithm (PFOA).
Shuai Cao, Qian Qian, Yongjun Cao, Wenwei Li, Weixi Huang, Jianan Liang   +5 more
doaj   +2 more sources

Media Information Compared to Scientific Studies Regarding Piranha Attacks in Brazil [PDF]

Revista da Sociedade Brasileira de Medicina Tropical
Background: Piranhas are carnivorous fish that inhabit rivers in Central and South America, and they are popularly recognized as relentless hunters of continental waters. Their reputation as killers is fueled by folklore and cinematographic works, which
Patrícia Tatiane Gomes, Sheila Canevese Rahal, Edson Luiz Fávero Junior, Adriana Lúcia Mendes, Itamar Alves Martins, Vidal Haddad Júnior   +5 more
doaj   +2 more sources

Surface Termination and Morphology of Single Crystal AlN by Ex Situ Chemical Treatment and In Situ MOCVD Process [PDF]

Micromachines
To achieve an atomically clean surface of single-crystal aluminum nitride (AlN) substrates, this study systematically evaluated the effects of each step in ex situ wet chemical cleaning (solvent, piranha solution, HF, HCl) and in situ hydrogen annealing.
Yinghao Chen, Jun Zhang, Genhao Liang, Hongyi Yi, Lei Wang, Hao Ying, Lishan Zhao   +6 more
doaj   +2 more sources

Conservation of desaturase and elongases in a Brazilian freshwater carnivorous teleost: The red piranha (Pygocentrus nattereri)

Boletim do Instituto de Pesca
The endogenous biosynthesis of long-chain polyunsaturated fatty acids (LC-PUFAs) in fish is species specific and depends on several factors, such as trophic level, feeding habits, environmental characteristics, taxonomic position and mainly the ...
Karine Vasconcelos Costa, Raimudo de Jesus Tavares Diniz Neto, Yasmin Moreira de Souza, Rômulo Veiga Paixão, Renato Ferraz   +4 more
doaj   +2 more sources

Diet and seasonal distribution of piranha populations in the São Miguel River, Rondônia, Brazil

Boletim do Instituto de Pesca
This study analyzed the spatial and seasonal distribution of piranha species and their respective diets. Samples were collected monthly from August 2020 to July 2021 using various types of fishing gear in different sections of the river.
Eloi Bispo Bezerra-Neto, Raniere Garcez Costa Sousa, Jaine Albino Alves, Charles Hanry Faria Junior   +3 more
doaj   +2 more sources

Ontogenetic diet shifts: an additional mechanism for successful invasion of a piranha species in a Neotropical floodplain

Anais da Academia Brasileira de Ciências, 2021
Ontogenetic shifts in food preference reduces intraspecific competition as immature individuals eat different food types than adults. This diet plasticity could facilitate species’ ability to successfully invade and establish itself in a new environment,
GUSTAVO H. ZAIA ALVES, BRUNO R.S. FIGUEIREDO, GISLAINE I. MANETTA, EVANILDE BENEDITO   +3 more
doaj   +2 more sources

Chemical Pretreatment of Rice and Wheat Straws to Reduce the Recalcitrant Structure: Comparative and Kinetic Studies with Different Chemicals for Biogas Production [PDF]

Nature Environment and Pollution Technology, 2023
In this study, a comprehensive comparison of two different chemical pretreatments of wheat straw (WS) and rice straw (RS) was made. The pretreatment was performed using piranha solution and p-toluenesulfonic acid (PTSA) to dissolve the biomass’s complex ...
Nikita Kanaujia, Shalu Rawat and Jiwan Singh
doaj   +1 more source

THE DESCRIPTION OF THE NEED FOR HOME CARE FOR POSTPARTUM WOMEN WITH CESAREAN SECTION DELIVERY DURING THE COVID-19 PANDEMIC

Placentum, 2022
Background: Childbirth requires a physiological process, but pathological conditions or complications can arise from pregnancy to delivery such as Cesarean Section.
Ni Ketut Ayu Sugiartini, Putu Krisa Lila Samhita, Andini Mbati Anahida   +2 more
doaj   +1 more source

HYPNO-BREASTFEEDING REDUCES ANXIETY OF BREASTFEEDING MOTHERS DURING THE COVID-19 PANDEMIC

Placentum, 2022
Background: COVID-19 pandemic is a time when a lot of people are vulnerable for virus transmission which can cause anxiety and psychological disorders, including for postpartum and breastfeeding mothers.
Ni Nyoman Deni Witari, Ketut Novia Arini, Ni Made Widiastuti   +2 more
doaj   +1 more source

In Vitro Assessment of a Novel Piranha-Passivated Dental Implant Surface Against Oral Biofilm Formation. [PDF]

Clin Oral Implants Res
Background and Objectives Peri‐implantitis, a significant complication resulting from bacterial colonization on dental implants, presents a challenge in oral healthcare.
Nuevo P, Virto L, Ribeiro-Vidal H, Gil J, Sanz M.   +4 more
europepmc   +2 more sources