Results 21 to 30 of about 214,319 (261)
Statut organique et respiration microbienne des sols du nord de la Tunisie [PDF]
Biotechnologie, Agronomie, Société et Environnement, 2009 Organic status and microbial respiration in Northern Tunisian soils. The soil organic matter content is an important characteristic of soils fertility.
Annabi M., Bahri H., Latiri K.
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The Application of Potentiometric Methods in Determination Total Organic Carbon Content of Soil
International Journal on Advanced Science, Engineering and Information Technology, 2014 Potentiometric method is one method that is widely used to determine the content of certain ions in a solution, but have not been widely applied to the analysis of soil samples. In this research apply the potentiometric methods for the determination of total organic carbon content of solids affected by oil contamination using CO 2 selective electrode ...
Yohandri Bow, Hairul Hairul, Ibnu Hajar
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Cejing jishuThe lithology of the first member of the Maokou formation in the Middle Permian of Central Sichuan is complex and the longitudinal variation is large. There are many influencing factors and difficulty in the prediction of total organic carbon content, so
TANG Shengshou +5 more
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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
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Progress in Fishery SciencesIn the face of growing concerns over global climate change and carbon emissions, the study of marine carbon sinks has garnered significant attention.
Duyu CHEN +6 more
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Total Organic Carbon and Total Nitrogen Contents in Lake Sediment as a Proxies of Paleoclimate
The Quaternary Research (Daiyonki-Kenkyu), 2003 湖沼堆積物中の全有機炭素(TOC)・全窒素(TN)含有率に関連する最近の研究を概観した.TOCおよびTNには,湖水中で自生するものと,陸上から運び込まれる外来性のものがあり,通常の調和型湖沼では前者を起源とするものが優占する.木崎湖における最近の研究では,1983年から1999年にかけての湖底堆積物中のTOC含有率は,同じ期間の湖水中の年間クロロフィルa量および冬の平均気温(12月～翌3月の平均)との間によい相関があることが認められた.このことは,気温が湖水中の生物生産性に影響を与えることを通じて,湖沼堆積物中への有機物流入を支配していることを意味する.野尻湖底堆積物のコア試料中のTOCとTNの含有率およびC/Nの変動を過去4.5万年間にわたって解析したところ ...
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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 +7 more
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Бюллетень Почвенного института им. В.В. Докучаева, 2018 In the physical fractions of gray forest soil (agroseraya typical): clay (up to d = 0.001 мм), light (lighter than 2 g/cm3) and the residue fraction, the contents of total carbon and phosphorus (total, organic and mineral forms) were determined.
O. B. Rogova +3 more
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FEBS Letters, EarlyView.Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
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Cejing jishuTotal organic carbon content (TOC) is an important parameter for shale oil reservoir evaluation. However, traditional log evaluation methods for TOC have low accuracy and poor universality. Machine learning models have improved the prediction accuracy of
SONG Yanjie +3 more
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