Results 41 to 50 of about 165,583 (335)

Soil Organic Matter and its Stability in Aerobic and Anaerobic Conditions

open access: yesSoil and Water Research, 2006
In eight samples of organic and organomineral surface horizons we studied the stability of soil organic matter in aerobic and anaerobic conditions expressed by the rate constant of its biochemical oxidation, total biochemical oxygen demand, substrate ...
Ladislav Kolář   +4 more
doaj   +1 more source

The Ability of Dissolved Oxygen and Biochemical Oxygen Demand Parameters to Self-purify in the Garang River

open access: yesJurnal Presipitasi, 2021
Garang River is administratively located in Semarang Regency, Kendal Regency, and Semarang City. Population growth and the number of community activities around the river can affect the water quality of the Garang River.
Junaidi Junaidi   +2 more
doaj   +1 more source

Water hyacinth biochar for trivalent chromium adsorption from tannery wastewater

open access: yesEnvironmental and Sustainability Indicators, 2020
This investigation studied the utilization of water hyacinth (Eichhornia crassipes) as biochar for adsorption of trivalent chromium ion. The prepared biochar has been characterized by Fourier transforms infrared spectroscopy (FTIR) before and after the ...
Md Abul Hashem   +4 more
doaj   +1 more source

Levels of Organic Pollution Indicators in Groundwater at the Old Landfill and Waste Management Site

open access: yesApplied Sciences, 2017
The aim of this paper was to assess groundwater quality in a landfill and waste management site, with special regard to levels of organic pollution indicators: chemical oxygen demand (COD), biochemical oxygen demand (BOD), and total organic carbon (TOC).
Eugeniusz Koda   +2 more
doaj   +1 more source

First-order mass balance models of COD, BOD and DO in a subsurface flow constructed wetland

open access: yesDesalination and Water Treatment
This study addresses the need for simple and cost-effective predictive models for the design and operation of constructed wetlands in domestic wastewater treatment.
Rainier V. Sánchez C.   +3 more
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

open access: yesFEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo   +2 more
wiley   +1 more source

Computational-Based Approaches for Predicting Biochemical Oxygen Demand (BOD) Removal in Adsorption Process

open access: yesAdsorption Science & Technology, 2022
Predicting the adsorption performance to remove organic pollutants from wastewater is an essential environmental-related topic, requiring knowledge of various statistical tools and artificial intelligence techniques.
Mohamed K. Mostafa   +3 more
doaj   +1 more source

Hematopoietic (stem) cells—The elixir of life?

open access: yesFEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo   +4 more
wiley   +1 more source

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