David Jacobi

ORCID: 0000-0001-8674-223X
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About
Contact & Profiles
Research Areas
  • Hydrocarbon exploration and reservoir analysis
  • Hydraulic Fracturing and Reservoir Analysis
  • Bariatric Surgery and Outcomes
  • Diet and metabolism studies
  • Seismic Imaging and Inversion Techniques
  • Petroleum Processing and Analysis
  • Nutritional Studies and Diet
  • Drilling and Well Engineering
  • NMR spectroscopy and applications
  • Obesity, Physical Activity, Diet
  • Physical Activity and Health
  • Adipose Tissue and Metabolism
  • Body Contouring and Surgery
  • Circadian rhythm and melatonin
  • Esophageal Cancer Research and Treatment
  • Geochemistry and Geologic Mapping
  • Diabetes Treatment and Management
  • Enhanced Oil Recovery Techniques
  • Muscle metabolism and nutrition
  • Liver Disease Diagnosis and Treatment
  • Esophageal and GI Pathology
  • Diabetes, Cardiovascular Risks, and Lipoproteins
  • Geophysical and Geoelectrical Methods
  • Gastroesophageal reflux and treatments
  • Atmospheric and Environmental Gas Dynamics

Inserm
2011-2025

Institut du Thorax
2018-2025

Nantes Université
2019-2025

Centre National de la Recherche Scientifique
2018-2025

Saudi Aramco (United States)
2015-2023

Centre Hospitalier Universitaire de Nantes
2019-2022

Harvard University
2012-2022

Centre de Recherche en Nutrition Humaine Rhône-Alpes
2007-2021

Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2021

Centre Hospitalier Universitaire de Tours
2004-2020

Hyperglycemia is a result of impaired insulin action on glucose production and disposal, major target antidiabetic therapies. The study insulin-independent regulatory mechanisms metabolism may identify new strategies to lower blood sugar levels. Here we demonstrate an unexpected metabolic function for IL-13 in the control hepatic production. Th2 cytokine known mediate macrophage alternative activation. Genetic ablation Il-13 mice (Il-13–/–) resulted hyperglycemia, which progressed resistance...

10.1172/jci64941 article EN Journal of Clinical Investigation 2012-12-21

Metabolic pathways and inflammatory processes are under circadian regulation. Rhythmic immune cell recruitment is known to impact infection outcomes, but whether the clock modulates immunometabolism remains unclear. We find that molecular Bmal1 induced by stimulants, including Ifn-γ/lipopolysaccharide (M1) tumor-conditioned medium, maintain mitochondrial metabolism metabolically stressed conditions in mouse macrophages. Upon M1 stimulation, myeloid-specific knockout (M-BKO) renders...

10.7554/elife.54090 article EN cc-by eLife 2020-05-12

IL-13 hits the gym Interleukin-13 (IL-13) is a cytokine secreted by T cells, innate lymphoid cells (ILC2s), and granulocytes. It acts as central mediator in allergy antihelminth defense with various effects. Knudsen et al. report distinct role for exercise metabolism (see Perspective Correia Ruas). Mice subjected to endurance training showed increases circulating IL-13, which correlated ILC2 expansion muscles. By contrast, exercise-induced muscle fatty acid utilization mitochondrial...

10.1126/science.aat3987 article EN Science 2020-04-30

Abstract Gas shales are economically viable hydrocarbon prospects that have proven to be successful in North America. Unlike conventional prospects, gas serve as the source, seal, and reservoir rock. Generating commercial production from these unique lithofacies requires stimulation through extensive hydraulic fracturing. The absence of an accurate petrophysical model for unconventional plays makes prediction economic productivity fracturing success risky. This paper presents integrated...

10.2118/114925-ms article EN 2008-06-16

Background Physical activity is a major component of healthy lifestyle in youth and adults. To identify determinants this complex behavior an important research objective the process designing interventions to promote physical at population level. In addition individual determinants, there evidence documenting familial influences on activity. However, few studies that have addressed issue with measures did not provide data parent-offspring relationships throughout childhood adolescence. The...

10.1371/journal.pone.0029195 article EN cc-by PLoS ONE 2011-12-28

Nonalcoholic fatty liver disease (NAFLD) is a dysmetabolic hepatic damage of increasing severity: simple fat accumulation (steatosis), nonalcoholic steatohepatitis (NASH), and fibrosis. Oxidative stress considered an important factor in producing hepatocyte injury associated with NAFLD progression. Studies also suggest link between the specific lipid species, mitochondrial dysfunction, progression NAFLD. However, it unclear whether modifications are involved To gain insight into relationship...

10.1155/2021/9986299 article EN cc-by Oxidative Medicine and Cellular Longevity 2021-01-01

Summary Carbonate rocks are complex in structure and pore geometry display heterogeneity on all length scales. In this paper, carbonate described the basis of their contents for use pore-scale modeling. Definitions grains porosities based other carbonate-rock classifications; we did not invent new concepts. On content (grain, mud, cement), were divided into three types: muddy, grainy, mixed. Each type was subtypes geometries defined by researchers. Pore-size distribution Lønøy (2006) used...

10.2118/163073-pa article EN SPE Journal 2012-12-14

Background: Increasing physical activity and decreasing sedentary time are cornerstones in the management of type 2 diabetes (T2DM). However, there few instruments available to measure this population. We translated long version International Physical Activity Questionnaire (IPAQ-L) into French studied its reproducibility validity patients with T2DM. Methods: Reproducibility was by telephone administrations, 8 days apart. Concurrent tested against pedometry for 7 during habitual life....

10.1123/jpah.8.6.858 article EN Journal of Physical Activity and Health 2011-08-01

Oil and gas production from shale formations has proven to be economical because of advances in hydraulic fracturing but remains very challenging part the presence ductile, polymer nature hydrocarbon source material, kerogen. This organic matter is intertwined among silicates, aluminosilicates, other minerals as fine laminae that weave rock fabric, adding soft mechanical cohesion material. A potential solution been developed, a new type reactive fluid composed strong oxidizers such bromate...

10.1021/acs.energyfuels.9b00104 article EN Energy & Fuels 2019-05-01

To compare cognitive impairments in dementia with Lewy bodies (DLB) and Parkinson's disease (PDD), to discriminate between the two entities.10 DLB 12 PDD consecutive patients performed a neuropsychological battery designed assess several domains: verbal visual memory (Delayed Matching Sample (DMS)-48), language, gnosia, praxia executive functions.DLB had poorer performances orientation (p<0.05), Trail Making Test A (p<0.05) reading of names colours Stroop (p<0.05). Their scores were also...

10.1136/jnnp.2006.104257 article EN Journal of Neurology Neurosurgery & Psychiatry 2006-12-18

Abstract A new openhole logging service, RockViewSM, has been developed which provides lithological and quantitative mineralogical information for accurate formation evaluation. The assessment begins with elemental weights follows an interpretation of lithology mineralogy. Lithologies are divided into general categories including sand, shale, coal, carbonates, evaporites. Potentially identifiable minerals quartz, potassium-feldspar, albite, calcite, dolomite, siderite, anhydrite,...

10.2118/102770-ms article EN SPE Annual Technical Conference and Exhibition 2006-09-24

Abstract Objective: The objective was to evaluate two accelerometers, the RT3 and TriTrac‐R3D for their ability produce estimates of physical activity‐related energy expenditure (PAEE) in overweight/obese adults. Research Methods Procedures: PAEE from both accelerometers were obtained experiments. In Experiment 1, 13 subjects (BMI 34.2 ± 6.4 kg/m 2 ) monitored over weeks everyday life, being simultaneously measured by doubly labeled water method (DLW). 2, 8 34.3 5.0 10 normal‐weight 20.8 2.1...

10.1038/oby.2007.605 article EN Obesity 2007-04-01

Abstract The successful recovery of hydrocarbons from gas shales requires a fundamental understanding the reservoir's rock-matrix properties. Information about variable lithologies, mineralogies, and kerogen content is vital to locate favorable intervals for production. Knowledge in-situ stresses porosity these essential developing hydraulic fracturing strategies recover in place. Often properties are established analysis cores extracted wellbore, time-consuming practice which causes costly...

10.2118/124231-ms article EN SPE Annual Technical Conference and Exhibition 2009-10-04
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