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1,3-butadiene (bd) is an important industrial and environmental carcinogen present in cigarette smoke, automobile exhaust, and urban air. the major urinary metabolites of bd in humans are 2-(n-acetyl-l-cystein-s-yl)-1-hydroxybut-3-ene/1-(n-acetyl-l-cystein-s-yl)-2-hydroxybut-3-ene (mhbma), 4-(n-acetyl-l-cystein-s-yl)-1... | high throughput hplc-esi--ms/ms methodology for mercapturic acid metabolites of 1,3-butadiene: biomarkers of exposure and bioactivation |
endosomal trafficking of cell surface receptors is essential to their function. integrins are transmembrane receptors that integrate adhesion to the extracellular matrix with engagement of the cytoskeleton. ligated integrins mediate diverse signals that regulate matrix assembly, cell survival, cell morphology, and cell... | proteomics analysis identifies pea-15 as an endosomal phosphoprotein that regulates α5β1 integrin endocytosis |
matisse is the 2nd generation mid-infrared instrument designed to combine four vlti telescopes in the l, m and n spectral bands. it's commissioning in paranal is in progress since march 2018 and should continue until the middle of 2019. here we report, in june 2018, the commissioning plan, tools and the preliminary res... | commissioning matisse: first results |
we currently live in the golden age of experimental particle physics. the large hadron collider (lhc) finally discovered the higgs particle and may soon allow us to probe tevscale new physics. moreover, dark matter indirect detection experiments may have found annihilation products in our galaxy while the direct detect... | jet and dark substructure: rise of the machines |
color transparency (ct) is a prediction of qcd that at high momentum transfer q2, a system of quarks which would normally interact strongly with nuclear matter could form a small color-neutral object whose compact transverse size would be maintained for some distance, passing through the nucleus undisturbed. a clear si... | searching for the onset of color transparency in quasielastic 12c(e,e'p) |
first release of oman-packers-2018-2019 | danote/oman-packers-2018-2019: first release of oman-packers-2018-2019 |
first release of oman_ch4_stable_isotopes | danote/oman_ch4_stable_isotopes: first release of oman_ch4_stable_isotopes |
we report physical property measurements of core samples from the samail ophiolite in oman, drilled by the icdp oman drilling project. onboard core logging was conducted on d/v chikyu from july 5 to september 3, 2018. we analyzed 5 holes (cm1a, cm2b, ba1b, ba3a and ba4a) with a total core length of 1711m. the cm holes ... | initial report of physical property measurements, chikyuoman 2018: crust-mantle boundary and the mantle section from icdp oman drilling project phase ii |
based on observations collected at the european southern observatory, chile (eso ids: 385.c-0886(a) and 087.c-0811(a)). | evidence of a discontinuous disk structure around the herbig ae star hd 139614 (corrigendum) |
the wide spread of nanotechnology applications currently carries with it the possibility of polluting the environment with the residues of these nanomaterials, especially those in the metallic form. therefore, it is necessary to study the possibility of treating and removing various nanoscale metal pollutants in enviro... | biosorption performance of the multi-metal tolerant fungus aspergillus sp. for removal of some metallic nanoparticles from aqueous solutions |
we report on characteristics of vein morphology and connectivity in samples from hole ba1b of the samail ophiolite drilled during the oman drilling project. veins and fractures can govern physical properties and help in understanding a history of tectonic stresses and fluid circulation in the active alteration site of ... | vein analysis of serpentinized peridotite basement of hole ba1b of the wadi lawayni drill site of the samail ophiolite. |
homo sapiens dispersals out of africa are often linked to intensifications of the african and indian summer monsoons. current models advocate that dispersals along the "southern-route" into arabia occurred during glacial termination-ii (t-ii), when lower sea-level and reduced bab-al-mandab width increased the likelihoo... | a climatic evaluation of the southern dispersal route during mis 5e |
here we present some preliminary results constraining peridotite alteration in cores from several oman drilling project (omandp) boreholes, from the samail ophiolite in the sultanate of oman. hole bt1b in wadi mansah east of fanjah was drilled through 200 m of fully carbonated and/or serpentinized peridotites of the ma... | peridotite alteration in omandp cores |
human glucose transporters (gluts) are responsible for cellular uptake of hexoses. elevated expression of gluts, particularly glut1 and glut3, is required to fuel the hyperproliferation of cancer cells, making glut inhibitors potential anticancer therapeutics. meanwhile, glut inhibitor-conjugated insulin is being explo... | molecular basis for inhibiting human glucose transporters by exofacial inhibitors |
hellisheiði geothermal power plant emits about 41,000 tonnes of co2 and 10,000 tonnes of h2s per year as a by-product of geothermal energy production. icelandic regulations, stricter than who guidelines, have been in effect in order to reduce h2s emissions of the geothermal industry, while carbon capture and storage (c... | monitoring of co2/h2s gas mixture injection in basaltic rocks at hellisheiði geothermal power plant, iceland |
in winter 2017-18, the oman drilling project (omandp) drilled seven holes at two sites in the samail ophiolite in the southern samail and tayin massifs. 1700 m of igneous and metamorphic rock cores were recovered from five holes (cm1a, cm2b, ba1b, ba3a and ba4a). in addition, drill cuttings were obtained from four rota... | oman drilling project phase 2 slimline borehole geophysics : rock parameters |
study of veins in serpentinized peridotite core from omandp holes ba1b, ba3a and ba4a can link observations of pervasive matrix alteration and present-day borehole water composition. the youngest vein types in all three holes are calcite-bearing veins, and texturally distinct, "waxy" serpentine veins. these cut other v... | correlated variation in vein type, vein frequency, ph, oxygen fugacity and depth in oman drilling project holes ba1b, ba3a and ba4a |
transient dynamical-thermoelastic-optical system simulation is an important expansion of classical ray tracing through rigid, resting lenses because the operating performance of high-precision optical systems can be influenced by dynamical excitations or thermal gradients. in this paper an approach for an integrated op... | transient optical simulation by coupling elastic multibody systems, finite elements, and ray tracing |
optical feeder links (ofl) are expected to become part of future very high throughput satellite (vhts) systems in response to the growing demand for higher capacity and lower costs. h2020 vertigo (very high throughput satellite ground optical link) project was set to prove key optical communication technologies and to ... | experimental assessment of various optical communication chains for high-capacity optical feeder links |
the inner regions (0.1-10 au) of protoplanetary discs are the expected birthplace of telluric planets. in those hot regions, solids can experience cyclical annealing, vapourisation, and recondensation. hot/warm dust grains emit mostly in the ir, notably in n-band (8-13 ?m). studying their chemistry with the new mir vlt... | spatially resolving the chemical composition of the planet building blocks |
for the first time we observed the emission of hot exozodiacal dust in l band. we used the new instrument matisse at the vlti to detect the hot dust around ? tuc at wavelengths between 3.37 ?m and 3.85 ?m. the dust-to-star flux ratio in l band amounts to 5 to 7 % and the spectral slope is ? = 3.92. we modelled the spec... | first l band detection of hot exozodiacal dust with vlti/matisse |
the growing interest into exploration of the moon poses several technological challenges, one of them is surely the need to ensure that the future moon robots andinhabited colonies will be able to rely on a solid and performing communication infrastructure both within the lunar environment and with earth control center... | optical communication requirements for scientific missions and the deep space gateway |
omandp holes cm1a and cm2b cored in wadi zeeb, on the west side of the wadi tayin massif, sample the crust-mantle transition of the samail ophiolite. they provide near 100% recovery of the lowermost 160 m gabbroic crust, a 150m thick unit of dunite with gabbro lenses, and the top 150 m of the underlying residual mantle... | pure, but not simple (shear): structural characterization of the gabbroic crust and crust-mantle transition in the wadi tayin massif of the samail ophiolite, oman (oman drilling project holes cm1a, cm2b, gt1a & gt2a) |
a single high‑affinity fatty acid binding site in the important human transport protein serum albumin (hsa) is identified and characterized using an nbd (7‑nitrobenz‑2‑oxa‑1,3‑diazol‑4‑yl)‑c12 fatty acid. this ligand exhibits a 1:1 binding stoichiometry in its hsa complex with high site‑specificity. the complex dissoci... | identification and characterization of a single high‑affinity fatty acid binding site in human serum albumin |
alkaline fluids rich in hydrogen and methane are predicted to form in many terrestrial and extraterrestrial environments where water circulates through "ultramafic rocks" containing abundant fe- and mg-silicates. in the example environment of the samail ophiolite in oman, recent field-based investigations of the subsur... | identifying the distributions, activities, adaptations, and signatures of microbial life inhabiting alkaline fluids and actively serpentinizing ultramafic rocks |
soil organic carbon (soc) is well known to largely determine the soil physical properties and fertility. total porosity, structural porosity, aeration, structural stability among others are reported to increase linearly with increasing soc in most studies. is there an optimal soc content as target in soil management, o... | clay:organic-carbon and organic carbon as determinants of the soil physical properties: reassessment of the complexed organic carbon concept |
the rise of carbon dioxide (co2) in the atmosphere, due to decades of fossil fuels burning, is a key driver of anthropogenic climate change. carbon capture and storage (ccs) is a potential mitigation strategy for long-term sequestration of co2 that will allow the continued use of hydrocarbons during the transition to l... | offshore carbon dioxide storage within oceanic crust: geological and economic implication |
mortality from cancer-associated sepsis varies by cancer site and host responses to sepsis are heterogenous. native hawaiians have the highest mortality risk from cancer-associated sepsis and colorectal cancer (crc), even though they demonstrate lower crc incidence compared to other ethnicities. we conducted a retrospe... | transcriptome profiling of colorectal tumors from patients with sepsis reveals an ethnic basis for viral infection risk and sepsis progression |
the very large telescope interferometer (vlti) is currently the best infrastructure for long-baseline interferometry in particular in terms of sensitivity and accessibility to the general user. matisse, installed at the vlti focus since end of 2017, belongs to the second generation instruments. matisse, the multi apert... | matisse, the vlti mid-infrared imaging spectro-interferometer at the time of the first published astrophysical results |
peridotite aquifers are ubiquitous on earth, but most are in the deep-sea, and thus difficult to access. ophiolites provide a unique opportunity to study peridotite aquifers, and the oman drilling project established a multi-borehole observatory in a peridotite terrain of the samail ophiolite. we use the water level re... | the response of borehole water levels in an ophiolitic, peridotite aquifer to atmospheric, solid earth, and ocean tides |
drilling of the crust-mantle boundary by oman drilling project was conducted from november 2017 to january 2018 in wadi zeeb in the wadi tayin massif of the samail ophiolite. cores of 404.15 m and 300.00 m in length were obtained from holes cm1a (40q 637000e, 2533870n) and cm2b (40q 637000e, 2534270n), respectively. dr... | drilling of the crust - mantle boundary in the wadi tayin massif in the samail ophiolite at oman drilling project sites cm1 and 2 |
observations of the active galactic nucleus (agn), circinus, with vlti/matisse resulted in the reconstruction of images at seven independent wavelength channels in the n-band. these images show the circumnuclear dust and provide new details on constraints on the structure commonly known as the agn torus. the images wer... | vizier online data catalog: circinus galaxy n-band vlti/matisse images (isbell+, 2022) |
during the last decade, the first generation of beam combiners at the very large telescope interferometer has proved the importance of optical interferometry for high-angular resolution astrophysical studies in the nearand mid-infrared. with the advent of 4-beam combiners at the vlti, the u - v coverage per pointing in... | imaging capabilities of the vlti/matisse spectro-interferometric instrument |
i show that a very simple model in the context of newtonian physics promoted to a first approximation of general relativity can mimic dark matter and explain most of its intriguing properties. namely: i) dark matter is a halo associated to ordinary matter; ii) dark matter does not interact with ordinary matter nor with... | mimicking dark matter |
the subsurface of earth hosts an understudied biosphere and is thought to be analogous to environments on early earth and mars. microbial life in the deep subsurface relies on chemical energy from reactions such as serpentization, a process wherein mantle rock interacts with water to form hydrogen (h2) that is used by ... | active biological methane cycling in hyperalkaline serpentinization-impacted waters and implications for methane isotopic biosignatures |
improving the content and production of high-value ketocarotenoid pigments is critical for the commercialization of microalgal biorefineries. this study reported the use of magnesium aminoclay (mgac) nanoparticles for enhancement of astaxanthin production by haematococcus pluvialis in photoautotrophic cultures. additio... | enhancement of astaxanthin production by haematococcus pluvialis using magnesium aminoclay nanoparticles |
serpentinization – the interaction between hydrothermal water with ultramafic rock – can form hydrogen gas and support the generation of methane. this water rock interaction can create conditions favorable for microbes to survive in the deep subsurface. environments of serpentinization are considered of high importance... | insights into diversity and environmental adaptations using metapangenomics from a subsurface serpentinizing environment |
with this preface, we provide background information, a scientific overview of topics, and an annotated bibliography of the 63 papers published in the journal of geophysical research (jgr) special issue on "ophiolites and oceanic lithosphere, with a focus on the samail ophiolite," collected online at https://agupubs.on... | preface: special issue on ophiolites and oceanic lithosphere |
since the discovery of its edge-on debris disk in 1984, β pictoris has become a laboratory for studies on planet formation and planet-disk interactions, especially around the outer disk (from ∼ 10 au to ∼ 100 au). nevertheless, the inner region (<4 au) remains fairly unconstrained. vlti/pionier observations first re... | multiwavelength observations of the exo-cometary dust around β pictoris. |
the potential for molecular hydrogen (h2) and other reduced compounds generated via serpentinization to fuel subsurface microbial ecosystems independently from photosynthesis has spurred biogeochemical studies of serpentinizing environments. however, studies typically focus on samples obtained from surface seeps or thr... | biogeochemical variation across discrete depths in a peridotite aquifer assessed using borehole packers in the samail ophiolite, oman |
matisse, the vlti 2nd generation spectro-interferometric l, m and n bands imager, has been commissioned from march 2018 to march 2020. it is open to the general user since april 2019. a complete analysis of its performances is given in this paper for matisse standalone (with uts and ats) and for the gravity for matisse... | commissioning matisse: operation and performances |
macrophages have been recognized as key players in non-alcoholic fatty liver disease (nafld). our aim was to assess whether pharmacological attenuation of macrophages can be achieved by imatinib, an anti-leukemia drug with known anti-inflammatory and anti-diabetic properties, and how this impacts on nafld. we analyzed ... | imatinib reduces non-alcoholic fatty liver disease in obese mice by targeting inflammatory and lipogenic pathways in macrophages and liver |
to better understand the strength profile across an ancient ocean crust-mantle transition preserved in the samail ophiolite, we have analysed real-time drilling parameters and undertaken scratch tests on the core samples acquired at the oman drilling project sites cm1 and 2. drilling parameters, such as wob, rop, rpm a... | a strength profile across the ocean crust-mantle transition: oman drilling project sites cm1 and 2 |
hole bt1b (23°21.861' n, 58°10.957' e) was drilled by the oman drilling project (omdp) on the north side of wadi mansah in the samail ophiolite, oman. omdp is an international collaboration supported by the international continental scientific drilling program, deep carbon observatory, nsf, iodp, jamstec, and the europ... | drilling the leading edge of the mantle wedge and the underlying metamorphic sole of the samail ophiolite: hole bt1b, oman drilling project |
hole gt2a (utm: 40q 655960.7e / 2529193.5n) was drilled by the oman drilling project (omdp) into wadi gideah of wadi tayin massif in the samail ophiolite, oman. omdp is an international collaboration supported by the international continental scientific drilling program, the deep carbon observatory, nsf, iodp, jamstec,... | overview of hole gt2a: drilling middle gabbro in wadi tayin massif, oman ophiolite |
fits images corresponding to the imagery presented in the paper. the data are obtained with vlt/sphere/irdis in bbh and bbj filter in polarimetric mode. we upload a total of 4 observing epochs obtained between 31-03-2016 and 21-06-2018. all but one epoch (obtained on 06-06-2018 in bb_h) use the irdis yjhalcs coronagrap... | vizier online data catalog: hd 139614 polarization stokes q and u images (muro-arena+, 2020) |
how first‑time animal migrants find specific destinations remains an intriguing ecological question. migratory marine species use geomagnetic map cues acquired as juveniles to aide long‑distance migration, but less is known for long‑distance migrants in other taxa. we test the hypothesis that naïve eastern north americ... | lack of evidence for a fine‑scale magnetic map sense for fall migratory eastern north american monarch butterflies (danaus plexippus) |
the oman drilling project (omandp) drilled six holes at six sites in the samail ophiolite in the southern samail and tayin massifs. 1500-m of igneous and metamorphic rocks were recovered at four sites (gt1, gt2, gt3 and bt1) using wireline diamond core drilling and drill cuttings at two sites (ba1, ba2) using air rotar... | oman drilling project phase i borehole geophysical survey |
cooperation in the form of vote trading, also known as logrolling, is central for law-making processes, shaping the development of democratic societies. empirical evidence of logrolling is scarce and limited to highly specific situations because existing methods are not easily applicable to broader contexts. we have de... | revealing the anatomy of vote trading |
the newman kwart rearrangement (nkr) offers an efficient and high‑yielding method for producing substituted thiophenols from phenols. while an industrially important protocol, it suffers from high activation energy barriers (35–43 kcal/mol), requiring the use of extreme temperatures (>200 °c) and specialty equipment... | photothermal conversion by carbon black facilitates aryl migration by photon‑promoted temperature gradients |
carbon capture and storage is one solution to reducing co2 emissions in the atmosphere. the long-term geological storage of buoyant supercritical co2 requires high integrity cap rock. some of the risk associated with co2 buoyancy can be overcome by dissolving co2 into water during its injection, thus eliminating its bu... | mineral storage of co2/h2s gas mixture injection in basaltic rocks |
matisse is the second-generation mid-infrared spectrograph and imager for the very large telescope interferometer (vlti) at paranal. this new interferometric instrument will allow significant advances in various fundamental research fields: studying the planet-forming region of disks around young stellar objects, under... | the installation and ongoing commissioning of the matisse mid-infrared interferometer at the eso very large telescope observatory |
this paper addresses sparse signal reconstruction under various types of structural side constraints with applications in multi-antenna systems. side constraints may result from prior information on the measurement system and the sparse signal structure. they may involve the structure of the sensing matrix, the structu... | recovery under side constraints |
in situ co2 mineralization in peridotite has been proposed as a secure method of co2 storage for climate change mitigation. while co2 injection in peridotite has not been attempted as of the time of writing, there is increasing interest in its deployment. over the course of co2 injection into basaltic aquifers or salin... | microbiological considerations for in situ co2 storage in peridotite: results from the oman drilling project and related research |
in this paper, we consider the problem of joint antenna selection and analog beamformer design in downlink single-group multicast networks. our objective is to reduce the hardware costs by minimizing the number of required phase shifters at the transmitter while fulfilling given distortion limits at the receivers. we f... | joint antenna selection and phase-only beamforming using mixed-integer nonlinear programming |
silver nanoparticles (agnp) are one of the most synthesised nanomaterials due to their widespread applications, which in turn increases the potential of release and accumulation in nature. moreover, they are known as antibacterial and recommended to be used in different commercial drugs. however, the evaluation of thei... | impact of aqueous exposure to silver nanoparticles on growth performance, redox status, non-specific immunity, and histopathological changes of nile tilapia, oreochromis niloticus, challenged with aeromonas hydrophila |
data‑limited approaches to managing fisheries are widespread in regions where insufficient data prevent traditional stock assessments from determining stock status with sufficient certainty to be useful for management. where severe data limitations persist, a catch‑only approach is commonly employed, such as in the u.s... | working towards a framework for stock evaluations in data‑limited fisheries |
the identification and optimization of promising lead molecules is essential for drug discovery. recently, artificial intelligence (ai) based generative methods provided complementary approaches for generating molecules under specific design constraints of relevance in drug design. the goal of our study is to incorpora... | optimizing interactions to protein binding sites by integrating docking-scoring strategies into generative ai methods |
summaryavian pathogenic escherichia coli (apec) causes localized and systemic avian infections and is responsible for considerable economic losses in the poultry industry. this organism adheres and invades human and avian cells, however, the regulatory networks that dictate its virulence are largely unknown. the cpxra ... | the cpxra stress response system regulates virulence features of avian pathogenic escherichia coli |
to understand the moho discontinuity, first identified in 1909 as a downward step increase in seismic wave velocity, it is necessary to drill and sample the oceanic crustal-mantle transition zone (mtz). this original goal of scientific ocean drilling, articulated by harry hess in 1959, has come closer via an m2m site s... | from oman drilling tests to the mohole to mantle (m2m) |
we have initiated multidisciplinary efforts to assess the distribution, composition and function of the biosphere hosted in subsurface peridotite rocks in oman. we are exploring the coupling between hydrological, biological, and geochemical processes during the low-temperature hydration of peridotite. drilling, recover... | identifying subsurface biologically-mediated processes occurring during modern water/rock interaction in the samail ophiolite |
the 5.5 km sized jabal rayah ring structure located at 28°39'n/37°12'e in saudi arabia has been classified as a possible complex impact structure located in flat-lying paleozoic clastic sediments. previous, detailed mapping showed that erosional processes led to a relief inversion, with displaced, folded, and faulted b... | sandstone sample analysis and additional structural data from jabal rayah, a possible impact structure in saudi arabia |
nature of the geological moho is one of the key issues to address in the solid earth system. many studies of petrology, geochemistry, structure and physical properties of mafic and ultramafic rocks are testing in order to determine the geological feature of oceanic moho. physical properties of core samples from some co... | physical properties of the mohotz: implications from recent drilling projects |
carbon capture and storage (ccs) is a key technology to timely, feasibly and substantially reduce carbon dioxide (co2) emissions from industrial processes. although decades of experience in methane storage and co2 injection for enhanced oil recovery provide confidence in the performance of gas injection and storage, le... | geological storage of carbon dioxide: utility of tracers for detection and quantification of co2 leakage in the marine environment |
the oman drilling project (omandp) is a major, multidisciplinary scientific research project investigating processes preserved and occurring in the rocks of the samail ophiolite, oman; the largest and best subaerial exposure of ancient fast spread ocean crust and upper mantle. the major goals of omandp are to understan... | the oman drilling project - overview and initial results |
the peridotite aquifer in wadi tayin, sultanate of oman, is a perfect example of natural carbonation of ultramafic rocks. in situ mineral carbonation is considered the most safest and permanent option of co2 capture and sequestration (ccs). however, the process itself is yet to be characterised and a better understandi... | water-rock interactions in the peridotite aquifer of the oman-uae ophiolite: strontium isotopic ratio and geochemical evolution of groundwater |
wireline logging data from the phase i of the oman drilling project (omandp) represent a unique dataset on physical properties of the lower oceanic crust and mantle, including mantle dunites and peridotites, layered gabbros and lower gabbro transition, and sheeted-dike to gabbro transition. the data, collected in six b... | physical properties of the lower oceanic crust and mantle: quantifying the relationships in wireline logging data from the oman drilling project phase i |
the samail ophiolite in oman, a block of oceanic crust and upper mantle that was thrusted onto the arabian continent ~100 million years ago and subsequently tilted and eroded, is an excellent field laboratory to explore rock forming processes that occurred near the surface down to 20 km depth in the earth's interior. t... | scientific drilling in the samail ophiolite, sultanate of oman |
dark matter may interact with itself and with ordinary matter through new forces with new mediator particles. we extend the work of a recent study of the dark photon mediator to a spin-0 scalar mediator, the dark higgs. in this scenario, dark matter collects in the center of the earth and annihilates into these mediato... | scalar dark earth-shine |
phase 2 of the oman drilling project recovered the transition from layered gabbroic lower crust to upper mantle sequences of the samail ophiolite at holes cm1a (400m) and cm2b (300m), providing an unprecedented opportunity to study crustal accretion and alteration processes in oceanic lithosphere. alteration reactions ... | hydrothermal alteration of the crust-mantle transition and upper mantle in the samail ophiolite: insights from holes cm1a and cm2b of the oman drilling project |
the reaction of water and dissolved inorganic carbon (c) with peridotite can produce hydrogen (h2) and reduced c compounds capable of sustaining subsurface metabolisms including methanogenesis and sulfate reduction. methane (ch4) is often the most abundant form of c in hyperalkaline (ph>10) reacted waters, reaching ... | origin and cycling of methane and short chain alkanes in the samail ophiolite, oman |
despite nitrogen (n) being a key nutrient for life, little is known of the forms and availability of nitrogen in the deep, rock-hosted subsurface, especially in serpentinite-hosted (peridotite) ecosystems. nitrogen species such as ammonium or nitrate likely support the energy metabolisms and fixed n requirements of ser... | subsurface cycling of nitrogen in the actively serpentinizing samail ophiolite, oman |
advanced downhole hydrogeophysical logging of oman drilling project phase 2 boreholes using conventional and novel downhole probes was conducted to obtain a continuous record of petrophysical, hydraulic and fluid properties shortly after drilling in march 2018 in collaboration with the ministry of regional municipaliti... | advanced downhole hydrogeophysical logging during oman drilling project phase 2 - correlation of hydraulic and fluid properties |
without sunlight for photosynthesis, microorganisms in subsurface environments are dependent on chemical energy to sustain metabolic activity. yet little is known about the sources of chemical energy that support life in ophiolites. the samail ophiolite of oman, the largest and best exposed ophiolite in the world, is a... | biological methane cycling in serpentinization-impacted fluids of the samail ophiolite of oman |
the mid-infrared interferometric instrument (midi) at the very large telescope interferometer (vlti) has been used to spatially resolve the dust-forming region of 14 asymptotic giant branch (agb) stars with different chemistry (o-rich and c-rich) and variability types (miras, semi-regular, and irregular variables). the... | to be or not to be asymmetric? vlti/midi and the mass-loss geometry of agb stars |
reactions between divalent cation-rich silicate minerals and co2-bearing fluids to form (ca, mg, fe) carbonate minerals could facilitate the safe and permanent storage of anthropogenic carbon dioxide. deep-sea basalt formations provide large storage reservoir capacities and huge potential sources of ca2+, mg2+ and fe2+... | low temperature reaction experiments between basalt, seawater and co2, and implications for carbon dioxide sequestration in deep-sea basalts |
oman drilling project holes gt1a and gt2a were drilled into the wadi tayin massif, samail ophiolite and both recovered ca. 400 m of continuous core through a section of the layered gabbros and the foliated-layered gabbro transition. hole gt1a is cut by a discrete fault system including localized thin ultracataclastic f... | structural characterization of the foliated-layered gabbro transition in wadi tayin of the samail ophiolite, oman; oman drilling project holes gt1a and gt2a |
the jlab parity violation in deep inelastic scattering (pvdis) experiment will use the upgraded 12 gev beam and proposed solenoidal large intensity device (solid) to measure the parity-violating electroweak asymmetry in dis of polarized electrons with high precision in order to search for physics beyond the standard mo... | gas electron multipler (gem) detectors for parity-violating electron scattering experiments at jefferson lab |
hole gt3a (23.11409 n, 58.21172 e) was drilled by the oman drilling project (omdp) into wadi abdah of the samail ophiolite, oman. omdp is an international collaboration supported by the international continental scientifi1c drilling program, the deep carbon observatory, nsf, iodp, jamstec, and the european, japanese, g... | overview of hole gt3a: the sheeted dike/gabbro transition |
the samail ophiolite in oman, a block of oceanic crust and upper mantle that was thrusted onto the arabian continent ~100 million years ago and subsequently tilted and eroded, is an excellent field laboratory to explore rock forming processes that occurred near the surface down to 20 km depth in the earth's interior. t... | scientific drilling in the samail ophiolite, sultanate of oman |
hole gt1a (22° 53.535'n, 58° 30.904'e) was drilled by the oman drilling project (omdp) into gt1a of the samail ophiolite, oman. omdp is an international collaboration supported by the international continental scientific drilling program, the deep carbon observatory, nsf, iodp, jamstec, and the european, japanese, germ... | lower crustal section of the oman ophiolite drilled in hole gt1a, icdp oman drilling project |
with special interest on crust-mantle transitional changes and arrangements from oman dp, drilling parameters were recorded at the wellsite to study the mechanical specific energy using the reference of core scratch tests, newly developed borehole magnetometer and most advanced geochemical logging technology were teste... | core-log integration across crust-mantle transition in oman |
phase 2 of the oman drilling project recovered the transition from layered gabbroic lower crust to upper mantle sequences of the samail ophiolite at holes cm1a (400m) and cm2b (300m), providing an unprecedented opportunity to study crustal accretion and alteration processes in oceanic lithosphere. alteration reactions ... | hydrothermal alteration of the crust-mantle transition and upper mantle in the samail ophiolite: insights from the oman drilling project |
earth's upper mantle is dominated by peridotite rock and these rock type was also found in the subsurface of mars and probably comprise the rocky bodies of the icy moons europa and enceladus. when in contact with water, the reducing rock undergoes serpentinization reaction abiotically generating hydrogen. in such syste... | microbial sulfate reduction rates in low temperature serpentinizing mantle rocks |
we study a simple first-order mean field game in which the coupling with the mean field is only in the final time and gives an incentive for players to congregate. for a short enough time horizon, the equilibrium is unique. we consider the process of \emph{iterating} the game, taking the final population distribution a... | cluster formation in iterated mean field games |
color transparency (ct) is a prediction of qcd that at high momentum transfer q2, a system of quarks, each of which would normally interact strongly with nuclear matter, could form a small color-neutral object whose compact transverse size would be maintained for some distance, passing through the nucleus undisturbed. ... | the search for color transparency at 12 gev at jlab |
the multiple measurement vectors (mmv) problem refers to the joint estimation of a row-sparse signal matrix from multiple realizations of mixtures with a known dictionary. as a generalization of the standard sparse representation problem for a single measurement, this problem is fundamental in various applications in s... | joint sparse estimation with cardinality constraint via mixed-integer semidefinite programming |
context: the very large telescope interferometer (vlti) has been providing breakthrough images of the dust in the central parsecs of active galactic nuclei (agn), thought to be a key component of the agn unification scheme and agn host galaxy interaction. in single infrared bands, these images can have multiple interpr... | chromatically modelling the parsec scale dusty structure in the centre of ngc1068 |
matisse is the mid-infrared spectro-interferometer for the vlti. it combines four apertures in the l, m and n bands (from 3 to 13 microns) with spectral resolutions ranging from 30 to 4500. it is designed to provide polychromatic images and advanced multi-wavelength model fitting. one of the driving science cases of th... | observing and characterizing the planet-forming region of protoplanetary disks with matisse |
matisse represents a great opportunity to image the environment around massive and evolved stars. this will allow one to put constraints on the circumstellar structure, on the mass ejection of dust and its reorganization, and on the dust-nature and formation processes. matisse measurements will often be pivotal for the... | grown-up stars physics with matisse |
russian propaganda outlet rt (formerly, russia today) produces content in seven languages. there is ample evidence that rt's communication techniques differ for different language audiences. in this article, we offer the first comprehensive analysis of rt's multi-lingual article collection, analyzing all 2.4 million ar... | temporally stable multilayer network embeddings: a longitudinal study of russian propaganda |
this article considers the recovery of low-rank matrices via a convex nuclear-norm minimization problem and presents two null space properties (nsp) which characterize uniform recovery for the case of block-diagonal matrices and block-diagonal positive semidefinite matrices. these null-space conditions turn out to be s... | block-sparse recovery of semidefinite systems and generalized null space conditions |
the rise of the programmable web offers new opportunities for the empirically driven social sciences. the access, compilation and preparation of data from the programmable web for statistical analysis can, however, involve substantial up-front costs for the practical researcher. the r-package rwebdata provides a high-l... | rwebdata: a high-level interface to the programmable web |
the scip optimization suite provides a collection of software packages for mathematical optimization centered around the constraint integer programming framework scip. the focus of this paper is on the role of the scip optimization suite in supporting research. scip's main design principles are discussed, followed by a... | enabling research through the scip optimization suite 8.0 |
carbon-rich dust is known to form in the atmosphere of the semiregular variable star r sculptoris. such stardust, as well as the molecules and gas produced during the lifetime of the star, will be spread into the galaxy via the mass-loss process. probing this process is crucial to understand the chemical enrichment of ... | matisse first pictures of dust and molecules around r sculptoris |
in 2002, v838 monocerotis (v838 mon) erupted in a red novae event which has been interpreted to be a stellar merger. soon after reaching peak luminosity, it began to cool, and its spectrum evolved to later spectral types. dust was also formed in the post-merger remnant, making it bright in the mid-infrared. interferome... | the mid-infrared environment of the stellar merger remnant v838 monocerotis |
context. asymptotic giant branch (agb) stars are one of the main sources of dust production in the galaxy. however, it is not yet clear what this process looks like and where the dust happens to be condensing in the circumstellar environment.aims: by characterizing the location of the dust and the molecules in the clos... | locating dust and molecules in the inner circumstellar environment of r sculptoris with matisse |
nowadays, data has become an invaluable asset to entities and companies, and keeping it secure represents a major challenge. data centers are responsible for storing data provided by software applications. nevertheless, the number of vulnerabilities has been increasing every day. managing such vulnerabilities is essent... | perspectives on risk prioritization of data center vulnerabilities using rank aggregation and multi-objective optimization |
protoplanetary disks are the building factories for planets. understanding their physical properties is a keystone to apprehend planet formation and explain exoplanets observed diversity. the disk around hd97048 is relatively peculiar : an exoplanet has been inferred from alma kinematic analysis; it displays the very r... | what vlt/visir told us about solid-carbon in protoplanetary disks |
single dish observations of ngc 1068 have shown the presence of a 3.4 μm aliphatic hydrocarbon absorption feature similar to diffuse lines of sight towards the galactic centre. both, the single dish spectra and the correlated fluxes obtained by matisse, present a broad absorption profile in the l band as well, that var... | the carbonaceous dust at sub-parsec scales in the nucleus of ngc 1068 |
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