Blaž Stres

ORCID: 0000-0003-2972-2907
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About
Contact & Profiles
Research Areas
  • Gut microbiota and health
  • Microbial Community Ecology and Physiology
  • Genomics and Phylogenetic Studies
  • Anaerobic Digestion and Biogas Production
  • Metabolomics and Mass Spectrometry Studies
  • Wastewater Treatment and Nitrogen Removal
  • Diet and metabolism studies
  • Polar Research and Ecology
  • Coastal wetland ecosystem dynamics
  • Microbial Metabolic Engineering and Bioproduction
  • Peatlands and Wetlands Ecology
  • Mycorrhizal Fungi and Plant Interactions
  • Biofuel production and bioconversion
  • Coal Combustion and Slurry Processing
  • Soil Carbon and Nitrogen Dynamics
  • Membrane Separation Technologies
  • Ultrasound and Cavitation Phenomena
  • Phosphorus and nutrient management
  • Scientific Computing and Data Management
  • Plant Pathogens and Fungal Diseases
  • Pharmaceutical and Antibiotic Environmental Impacts
  • Fermentation and Sensory Analysis
  • Bioinformatics and Genomic Networks
  • Machine Learning in Bioinformatics
  • Ruminant Nutrition and Digestive Physiology

University of Ljubljana
2016-2025

National Institute of Chemistry
2023-2025

Jožef Stefan Institute
2019-2025

Jožef Stefan International Postgraduate School
2025

Geodetic Institute of Slovenia
2018-2024

Universität Innsbruck
2016-2021

Michigan State University
2009

Agricultural institute of Slovenia
2009

Ecologie Microbienne Lyon
2004

ABSTRACT mothur aims to be a comprehensive software package that allows users use single piece of analyze community sequence data. It builds upon previous tools provide flexible and powerful for analyzing sequencing As case study, we used trim, screen, align sequences; calculate distances; assign sequences operational taxonomic units; describe the α β diversity eight marine samples previously characterized by pyrosequencing 16S rRNA gene fragments. This analysis more than 222,000 was...

10.1128/aem.01541-09 article EN Applied and Environmental Microbiology 2009-10-03

ABSTRACT Nitrous oxide (N 2 O) is an important greenhouse gas in the troposphere controlling ozone concentration stratosphere through nitric production. In order to quantify bacteria capable of N O reduction, we developed a SYBR green quantitative real-time PCR assay targeting nosZ gene encoding catalytic subunit nitrous reductase. Two independent sets primers flanking fragment previously used diversity studies were designed and tested (K. Kloos, A. Mergel, C. Rösch, H. Bothe, Aust. J....

10.1128/aem.00231-06 article EN Applied and Environmental Microbiology 2006-08-01

Denitrification is a facultative respiratory pathway in which nitrite (NO2−), nitric oxide (NO), and nitrous (N2O) are successively reduced to nitrogen gas (N2), effectively closing the cycle. The ability denitrify widely dispersed among prokaryotes, this polyphyletic distribution has raised possibility of horizontal gene transfer (HGT) having substantial role evolution denitrification. Comparisons 16S rRNA denitrification phylogenies recent studies support possibility; however, these...

10.1093/molbev/msn146 article EN Molecular Biology and Evolution 2008-07-08

In this study, microcosms were used to investigate the influence of temperature (4 and 28 °C) water content (45% 90% WHC) on microbial communities activities in carbon-rich fen soil. Bacterial, archaeal denitrifier community composition was assessed during incubation for 12 weeks using terminal restriction fragment length polymorphism (T-RFLP) profiling 16S rRNA nitrous oxide reductase (nosZ) genes. addition, abundance, potential denitrification activity production greenhouse gases measured....

10.1111/j.1574-6941.2008.00555.x article EN FEMS Microbiology Ecology 2008-08-15

An organism's gut microbiome handles most of the metabolic processes associated with food intake and digestion but can also strongly affect health behavior. A stable microbial core community in provides general competences for substrate degradation is robust against extrinsic disturbances like changing diets or pathogens. Black Soldier Fly larvae (BSFL; Hermetia illucens) are well known their ability to efficiently degrade a wide spectrum organic materials. The ingested substrates build up...

10.3389/fmicb.2020.00993 article EN cc-by Frontiers in Microbiology 2020-05-21

The human microbiome has emerged as a central research topic in biology and biomedicine. Current studies generate high-throughput omics data across different body sites, populations, life stages. Many of the challenges are similar to other studies, quantitative analyses need address heterogeneity data, specific statistical properties, remarkable variation composition individuals sites. This led broad spectrum machine learning that range from study design, processing, standardization...

10.3389/fmicb.2021.635781 article EN cc-by Frontiers in Microbiology 2021-02-22

Canteens represent an essential food supply hub for educational institutions, companies, and business parks. Many people in these locations rely on a guaranteed service with consistent quality. It is ongoing challenge to satisfy the demand sufficient serving numbers, portion sizes, menu variations cover intolerances different palates of customers. However, overestimating this or fluctuating quality dishes leads inevitable loss unconsumed due leftovers. In study, waste fraction canteen...

10.3389/fmicb.2021.619112 article EN cc-by Frontiers in Microbiology 2021-01-21

The effect of standard agricultural management on the genetic heterogeneity nitrous oxide reductase (nosZ) fragments from denitrifying prokaryotes in native and cultivated soil was explored. Thirty-six cores were composited each two conditions. nosZ gene amplified triplicate samples, PCR products cloned screened by restriction fragment length polymorphism (RFLP). total RFLP profiles increased similarity with sample size until 3-g samples produced visually identical for treatment. Large...

10.1128/aem.70.1.301-309.2004 article EN cc-by Applied and Environmental Microbiology 2004-01-01

Background The Himalaya with its altitude and geographical position forms a barrier to atmospheric transport, which produces much aqueous-particle monsoon precipitation makes it the largest continuous ice-covered area outside polar regions. There is paucity of data on high-altitude microbial communities, their native environments responses environmental-spatial variables relative seasonal deglaciation events. Methodology/Principal Findings Soils were sampled along transects from 5000 m 6000...

10.1371/journal.pone.0076440 article EN cc-by PLoS ONE 2013-09-26

Wastewater treatment plants, the last barrier between ever-increasing human activities and environment, produce huge amounts, of unwanted semi-solid by-product - waste activated sludge. Anaerobic digestion can be used to reduce amount However, process needs extensive modernisation refinement realize its full potential. This achieved by using efficient pre-treatment processes that result in high sludge disintegration solubilization. To this end, we investigated efficiency a novel pinned disc...

10.1016/j.scitotenv.2021.151414 article EN cc-by The Science of The Total Environment 2021-11-04

Anaerobic digestion in wastewater treatment plants converts its unwanted end product – waste activated sludge into biogas. Even if the process is well established, pre-treatment of can further improve efficiency. In this study, four regimes for increasing methane production through prior disintegration were investigated using lab-scale cavitation generator and real samples. Three different cavitating (attached regime, developed cloud shedding regime a wake regime) one non-cavitating at...

10.1016/j.jenvman.2023.119074 article EN cc-by-nc-nd Journal of Environmental Management 2023-10-05

Few studies have been conducted on adaptations of microbial communities to low and fluctuating temperatures using environmentally relevant conditions. In this study, six Himalayan two temperate soils were selected as candidates for low-temperature/freeze-thaw (FT)-adapted susceptible soils, respectively. Redundancy analysis with forward selection was used create a model environmental parameters explaining variability in the initial abundance 4 °C activities. The best predictor soil carbon,...

10.1111/j.1574-6941.2010.00951.x article EN FEMS Microbiology Ecology 2010-07-12

Sidestream partial nitritation and deammonification (pN/A) of high-strength ammonia wastewater is a well-established technology. Its expansion to the mainstream is, however mainly impeded by poor retention anaerobic oxidizing bacteria (AnAOB), insufficient repression nitrite (NOB) difficult control soluble chemical oxygen demand levels. At municipal treatment plant in Strass (Austria) microbial consortium was exhaustively monitored at full-scale over one half year with regular transfer...

10.1016/j.watres.2022.118517 article EN cc-by Water Research 2022-04-27

Slightly acidic (pH 5.1) waste sludge with 4.7 % Total Solids (TS) was treated on a laboratory scale pined disc rotary generator of hydrodynamic cavitation (PD RGHC). Influence four rotor discs different number generation units (CGUs) investigated: 8-pins, 12-pins, 16-pins and 8-prism elements. The effect (HC) investigated by analyzing rheological properties, surface tension, dewaterability, particle size distribution. After subjecting the to 30 passes, dewatering ability significantly...

10.1016/j.ultsonch.2024.106943 article EN cc-by-nc Ultrasonics Sonochemistry 2024-06-05

This study investigates hydrodynamic performance of a novel sludge pretreatment device based on periodic shock wave generation by hydraulic hammer mechanism. A falling circular jet thickened waste activated was repeatedly impacted rotating blade, resulting in occurrence waves within the liquid region adjacent to impact. The rotational generator (RGHS) treating 10 L operated for 30 passes and at two different speeds producing blade impact velocities 44 m/s 70 m/s, respectively. At velocity...

10.1016/j.ultsonch.2025.107312 article EN cc-by Ultrasonics Sonochemistry 2025-03-13

We explored the assembly of intestinal microbiota in healthy male participants during run-in (5 day) and experimental phases [21-day normoxic bed rest (NBR), hypoxic bedrest (HBR)], ambulation (HAmb) a strictly controlled laboratory environment, balanced fluid, dietary intakes, circadian rhythm, microbial ambiental burden, 24/7 medical surveillance. The fraction inspired O2 (FiO2) partial pressure (PiO2) were 0.209 133.1 ± 0.3 mmHg for NBR 0.141 0.004 90.0 0.4 both variants (HBR HAmb; ~4,000...

10.3389/fphys.2017.00250 article EN cc-by Frontiers in Physiology 2017-05-04
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