Results 51 to 60 of about 4,386,581 (289)

Multiple controlling factors of lower Palaeozoic organic-rich marine shales in the Sichuan Basin, China: Evidence from minerals and trace elements

Energy Exploration & Exploitation, 2017
Lower Palaeozoic organic-rich shales are widely distributed in southern China. In this study, the organic matter contents of Lower Cambrian, Upper Ordovician, and Lower Silurian shales were analysed, and a high degree of vertical heterogeneity was found.
Chenjun Wu, Jincai Tuo, Mingfeng Zhang, Yan Liu, Lantian Xing, Juncheng Gong, Junli Qiu   +6 more
doaj   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Utilization of ancient permafrost carbon in headwaters of Arctic fluvial networks [PDF]

, 2015
Northern high-latitude rivers are major conduits of carbon from land to coastal seas and the Arctic Ocean. Arctic warming is promoting terrestrial permafrost thaw and shifting hydrologic flowpaths, leading to fluvial mobilization of ancient carbon stores.
Zimov, Nikita, Holmes, Robert, Spencer, Robert G. M., Spencer, Robert, Robert M. Holmes, Eglinton, Timothy, Paul J. Mann, Vonk, Jorien E.; id_orcid, McIntyre, Cameron, Eglinton, Timothy I., Vonk, Jorien, Nikita Zimov, Spencer, Robert G M, Mann, Paul, Jorien E. Vonk, Timothy I. Eglinton, Organic geochemistry, Spencer, Robert G.M., Davydova, Anna, Vonk, Jorien E., Holmes, Robert M., NWO-VENI: Ancient organic matter that matters: The fate of Siberian Yedoma deposits, Anna Davydova, Robert G. M Spencer, McIntyre, Cameron P., Mann, Paul J., Cameron P. Mcintyre   +26 more
core   +3 more sources

Dry Matter Accumulation and Transportation of Winter Wheat under Different Cultivation Models on Changwu Tableland

Shuitu baochi yanjiu, 2011
Research on dry matter accumulation and transportation on the Changwu Tableland of China,the field experiments were conducted on the five different cultivation models,i.e.,Changwu134（T1）,Changhan58+top dressing 75 kg/hm2（T2）,Changhan58+top dressing 75 kg/
HAO Qi-fei1, CHEN Wei2, DENG Xi-ping2
doaj  

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Anaerobic Organic Matter Uptake by Phosphate-Accumulating Organisms in Activated Sludge

Journal of Japan Society on Water Environment, 2008
An anaerobic aerobic sequencing batch reactor was operated for 185 days using municipal wastewater supplemented with a laundry detergent including LAS and AE to examine the efficiency of acetate uptake and the availability of the surfactants as a potential PHA source of PAOs under exposure to the detergent.
TSUJI, Koji, FUJITA, Masafumi, FURUMAI, Hiroaki, SAKAMOTO, Yasushi   +3 more
openaire   +2 more sources

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

FEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee, Junho Jeong, Chae Yeong Lee, Hyunjoon Cho, Man Hwan Oh, Je Chul Lee, Jee‐Young Lee, Yangmee Kim   +7 more
wiley   +1 more source

Biogeochemical consequences of vertical and lateral transport of particulate organic matter in the southern North Sea: A multiproxy approach [PDF]

, 2015
Vertical and lateral transports are of importance in continental shelf systems such as the North Sea andplay a major role in the processing of organic matter.
Middelburg, J.J., Organic geochemistry & molecular biogeology, Geochemistry, Organic geochemistry, Sinninghe Damsté, J.S., Le Guitton, M., Soetaert, K.   +6 more
core   +2 more sources

Hotspots and coldspots of seabed organic carbon on the Norwegian continental margin

Environmental Research Communications
Continental margin sediments are important sinks for organic carbon, thus providing valuable climate regulating functions. Human activities such as mobile bottom fishing might, however, compromise the effectiveness of the seabed in accumulating and ...
Markus Diesing, Craig Smeaton, Lilja Rún Bjarnadóttir, Terje Thorsnes   +3 more
doaj   +1 more source

Composted organic manures modulated soil–microbe interactions that enhanced the growth of tobacco by improving rhizospheric microbial structure and soil nutrients

Microbiology Spectrum
Stacking, a pivotal step in the preparation of composted organic manures, plays a crucial role in organic matter decomposition, nutrient availability, and soil microbial diversity, with effects dependent on the stacking duration.
Nuo Shi, Heng Yao, Tikun Zhang, Gaokun Zhao, Yuping Wu, Guanghai Zhang, Peng Zhou, Na Wang, Ge Wang, Guanghui Kong, Yongping Li, Yuxiang Bai   +11 more
doaj   +1 more source