Results 71 to 80 of about 992,205 (257)

Electronic Nose‐Based Methanol Feedback Precision Control Strategy for High‐Yield Alkaline Phosphatase Fermentation by Hansenula polymorpha

open access: yesFood Bioengineering, EarlyView.
Establishment of Closed‐Loop Methanol Feedback Precision Control System for Alkaline Phosphatase by Hansenula polymorpha. The electronic nose screened model for methanol detection as the core technical logic of online gas quantification. Methanol feedback control strategy for greatly elevating alkaline phosphatase production.
Jian‐Guang Liang   +6 more
wiley   +1 more source

Towards a collective understanding of fraction as quotient and a deeper mathematical knowledge for teaching [PDF]

open access: yes
Research conducted in many countries has shown that teaching and learning fractions is a challenge for students and teachers (Cramer et al., 2002; Kieran, 1976; Lamon, 2007; Moss & Case, 1999; Tian & Siegler, 2018; Van Steenbrugge et al., 2014).
Sidwall, Jillian
core  

Metabolic modeling and analysis of the metabolic switch in Streptomyces coelicolor [PDF]

open access: yes, 2010
Background The transition from exponential to stationary phase in Streptomyces coelicolor is accompanied by a major metabolic switch and results in a strong activation of secondary metabolism.
Maria E Merlo   +43 more
core   +3 more sources

Determination of Aflatoxins and Selected Heavy Metals in Rice Varieties Cultivated in Fogera, Amhara Region, Ethiopia

open access: yesFood Chemistry International, EarlyView.
ABSTRACT Rice (Oryza sativa L.) is a vital staple crop for nearly half the world's population. This study investigates the levels of aflatoxins (AFB1, AFB2, AFG1, and AFG2) and selected heavy metals (Cd, Pb, and Cr) and essential elements (Mn, Fe, Mg, Cu, and Zn) in rice varieties cultivated in Fogera, Amhara Region, Ethiopia.
Melese Tilahun   +3 more
wiley   +1 more source

Carbono orgânico total, biomassa microbiana e atividade enzimática do solo de áreas agrícolas, florestais e pastagem no médio Vale do Paraíba do Sul (RJ) Total organic carbon, microbial biomass and soil enzyme activity areas of agriculture, forestry and grassland in the middle Valley of Paraíba do Sul River (RJ)

open access: yesRevista Brasileira de Ciência do Solo, 2012
Características do solo, como o carbono orgânico total (COT), a biomassa microbiana e a atividade enzimática, são influenciadas por diversos fatores e têm sido apontadas como indicadores adequados de alterações provocadas por diferentes sistemas de uso e
Cristiane Figueira da Silva   +6 more
doaj  

Evolution under Fluctuating Environments Explains Observed Robustness in Metabolic Networks [PDF]

open access: yes, 2010
Copyright: © 2010 Soyer, Pfeiffer. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and ...
Pfeiffer, Thomas   +6 more
core   +1 more source

Food Contamination and Safety in Nigeria: A Systematic Synthesis of Heavy Metals, Microbial Pathogens, and Health Risk Metrics

open access: yesFood Safety and Health, EarlyView.
This is an infographic driver of food contaminants and health effects. ABSTRACT Food safety remains a critical challenge in Nigeria due to rapid urbanization and weak regulatory enforcement. This systematic review synthesizes empirical evidence from 2015 to 2025 to characterize food contaminant profiles and associated human health risks in Nigeria ...
Cecilia Nwadiuto Obasi   +6 more
wiley   +1 more source

Spiritual Cannibalism in HRD: How Workplace Spirituality Devours Sacred Traditions

open access: yesHuman Resource Development Quarterly, EarlyView.
ABSTRACT This paper interrogates how the discourse of workplace spirituality in human resource development (HRD) operates as a tool of colonization. Through a systematic review of 48 articles published between 1997 and March 2025, the study uncovers recurring patterns of spiritual appropriation in which non‐Western traditions are detached from their ...
Shoaib Ul‐Haq
wiley   +1 more source

Hypervision Proton Surgery: The Future Direction of Proton Therapy

open access: yesiNew Medicine, EarlyView.
ABSTRACT Proton beams provide unique physical advantages characterized by a low entrance dose, negligible exit dose, and a sharp Bragg peak, which enable superior sparing of normal tissues and support safe dose escalation for improved tumor control. However, conventional photon‐based fractionation remains widely used in proton therapy, where prolonged ...
Li Li, Shuanghu Yuan
wiley   +1 more source

Atividade microbiana e produção de milho (Zea mays) e de Brachiaria brizantha sob diferentes métodos de controle de plantas daninhas Microbial activity and production of corn (Zea mays) and Brachiaria brizantha under different methods of weed control

open access: yesPlanta Daninha, 2007
Avaliaram-se nesta pesquisa os efeitos dos herbicidas atrazine + nicosulfuron aplicados no consórcio entre milho a Brachiaria brizantha sobre a atividade microbiana do solo e a produtividade de ambas as espécies consorciadas.
A. Jakelaitis   +3 more
doaj   +1 more source

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