Results 31 to 40 of about 242,523 (263)

A Novel Euler's Elastica based Segmentation Approach for Noisy Images via using the Progressive Hedging Algorithm [PDF]

open access: yes, 2019
Euler's Elastica based unsupervised segmentation models have strong capability of completing the missing boundaries for existing objects in a clean image, but they are not working well for noisy images.
Li, Ling   +4 more
core   +2 more sources

Recent Advances and Challenges towards Sustainable Polyhydroxyalkanoate (PHA) Production

open access: yesBioengineering, 2017
Sustainable biofuels, biomaterials, and fine chemicals production is a critical matter that research teams around the globe are focusing on nowadays.
C. Kourmentza   +6 more
semanticscholar   +1 more source

Combined Treatment (Ultraviolet-C/Physapruin A) Enhances Antiproliferation and Oxidative-Stress-Associated Mechanism in Oral Cancer Cells

open access: yesAntioxidants, 2022
Physapruin A (PHA), a Physalis peruviana-derived withanolide, exhibits antiproliferation activity against oral and breast cancer cells. However, its potential antitumor effects in combined treatments remain unclear.
Sheng-Yao Peng   +5 more
doaj   +1 more source

Polyhydroxyalkanoates (PHA) toward cost competitiveness and functionality

open access: yes, 2020
Polyhydroxyalkanoates (PHA) have been produced by several bacteria as bioplastics in industrial scales. PHA commercialization has been challenging due to its complexity and the associated high cost together with instabilities on molecular weights (Mw ...
Guoqiang Chen   +3 more
semanticscholar   +1 more source

Biodegradable Microplastics: Environmental Fate and Persistence in Comparison to Micro- and Nanoplastics from Traditional, Non-Degradable Polymers

open access: yesMacromol
The escalating production of virgin plastics has resulted in an unprecedented generation of microplastics (MPs), posing significant environmental and health risks. Biodegradable plastics have emerged as an alternative, but their degradation also releases
Paolo Costa, Maximilian Lackner
doaj   +1 more source

Risk assessment & safety performance indicators in designing and constructing phase of Agglomeration Project, Bafgh [PDF]

open access: yesطب کار, 2013
Background: To reduce accidents, industrial HSE management system, and based on”prevention before occurrence” is required. The aim of this study was to evaluate the safety conflicts by Preliminary Hazard Analysis (PHA) method, and determine the ...
naser Hasheminejad   +4 more
doaj  

Severe acute maternal morbidity and associated deaths in conflict and post-conflict settings in Africa [PDF]

open access: yes, 2012
SETTING:  Five hospitals in four conflict and post-conflict countries (Democratic Republic of Congo, Somaliland, Sierra Leone and Burundi). OBJECTIVES:  To report among hospital deliveries: 1) the proportion of severe acute maternal morbidity (SAMM), 2 ...
Hinderaker, S G   +4 more
core   +2 more sources

Evaluating PHA productivity of bioengineered Rhodosprillum rubrum. [PDF]

open access: yesPLoS ONE, 2014
This study explored the potential of using Rhodosprillum rubrum as the biological vehicle to convert chemically simple carbon precursors to a value-added bio-based product, the biopolymer PHA. R.
Huanan Jin, Basil J Nikolau
doaj   +1 more source

Polyhydroxyalkanoates from industrial cheese whey: Production and characterization of polymers with differing hydroxyvalerate content

open access: yesCurrent Research in Biotechnology, 2022
The composition of polyhydroxyalkanoate (PHA) monomers affects the properties and final applications of PHA polymers. This study focused on the feasibility of producing tailored PHA differing in hydroxyvalerate (HV) content, through manipulation of the ...
Mónica Carvalheira   +4 more
doaj   +1 more source

Synthesis and physical properties of polyhydroxyalkanoate (PHA)-based block copolymers: A review.

open access: yesInternational Journal of Biological Macromolecules
Polyhydroxyalkanoates (PHAs) are a group of natural polyesters that are synthesised by microorganisms. In general, their thermoplasticity and (in some forms) their elasticity makes them attractive alternatives to petrochemical-derived polymers.
Jingjing Mai   +5 more
semanticscholar   +1 more source

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