Transition zone drilling in Tunu field (Total Indonesie) : a case study

2018 ◽  
Author(s):  
T.A. Syamlan
Keyword(s):  
Transition Zone

scholarly journals Can bomb-peak tritium persist in the transition zone? A case study from the German island of Langeoog

2018 ◽  
Vol 54 ◽  
pp. 00022
Author(s):  
V.E.A. Post ◽  
G.J. Houben
Keyword(s):  
Transition Zone ◽  
Southern Hemisphere ◽  
Northern Hemisphere ◽  
Half Life ◽  
Tritium Concentration ◽  
Nuclear Bomb ◽  
Hydrogeological Studies

Tritium has been used as a tracer in hydrogeological studies to date young groundwater. It was released in massive amounts to the atmosphere by nuclear bomb testing in the 1950’s and early 1960’s. Its activity in the atmosphere peaked around 1963-1964 and has been steadily falling since then due to its half-life of 12.32 years. On the northern hemisphere, where the atmospheric tritium concentration reached much higher levels than on the southern hemisphere, elevated tritium activities in groundwater persist, and thus can still be used to identify groundwater that has recharged during the post-bomb era.

Journey of Developing the Transition Zone for a Giant Carbonate Reservoir from Subsurface Modeling to Execution – Case Study

2017 ◽  
Author(s):  
Ashraf Lotfy El Gazar ◽  
Mohamad Yousef Alklih ◽  
Tariq Ali Al-Shabibi ◽  
Agus Izudin Latief ◽  
Tengku Mohd Fauzi ◽  
...  
Keyword(s):  
Transition Zone ◽  
Carbonate Reservoir ◽  
Subsurface Modeling

scholarly journals Geochemical Study of Serpentinization along an Ocean-Continent Transition Zone: The Alpine Tethys as a Case Study (SE-Switzerland)

2020 ◽  
Author(s):  
Flora Hochscheid ◽  
Marc Ulrich ◽  
Manuel Muñoz ◽  
Damien Lemarchand ◽  
Gianreto Manatschal
Keyword(s):  
Transition Zone ◽  
Geochemical Study

Clinical, Pathological, and Genomic profiles of Salivary Warthin tumor-like Mucoepidermoid Carcinoma

2021 ◽  
Vol 156 (Supplement_1) ◽  
pp. S87-S87
Author(s):  
B Li
Keyword(s):  
Transition Zone ◽  
Mucoepidermoid Carcinoma ◽  
Fish Analysis ◽  
Warthin Tumor ◽  
Molecular Features ◽  
Whole Exome ◽  
Main Driver ◽  
Driver Event

Abstract Introduction/Objective Warthin tumor-like mucoepidermoid carcinoma(WTL- MEC) is one of the subvariant of mucoepidermoid carcinoma. It mimics the histological features of metaplastic Warthin tumors (mWTs). To investigate the clinicopathological, molecular features, and bio-behaviors of WTL-MEC, we retrospected a cohort of 29 WTL- MEC patients. Methods/Case Report The clinicopathological and microscopic data were collected. Dual-color FISH analysis was performed on paraffin-embedded sections of 29 WTL- MEC patients and 16 mWTs patients using a MAML2 break- apart probe. Whole-exome sequencing and whole transcription sequencing were performed on 3 WTL-MEC and 3 typical mucoepidermoid carcinomas (TMEC) patients. Genetic data were bioinformatically analyzed by software MuTect (v1.7), PINDEL (v0.2.5), SnpEff (v3.0), and etc. Results (if a Case Study enter NA) The cohort of WTL-MEC included 10 male and 19 female patients with a median age of 42.3 years (range, 8 to 68 years). Microscopically, the WTL-MEC lesion consisted of multi-cysts with variant shapes and sizes. The cystic spaces were lined by bi-layered and multilayered oncocytic cells. A transition zone between the bi-layered oncocytic epithelium to the multilayered oncocytic epithelium was observed in WTL-MEC. The cords of epidermoid cells and mucous cells could be found. The germinal center, extensive hyalinization, and mucus extravasation were observed. MAML2 rearrangement was identified in 29 (100%) WTL-MEC. No rearrangement was observed in mWTs by FISH. MET was the most commonly mutated gene in TMEC, and PRDM11 was the most commonly mutated gene in WTL-MEC. Twenty-nine patients were alive without recurrent at the end of the follow-up periods(5–128M). One Patient died due to the metastasis to the lung. Conclusion compared with mWTs, WTL- MEC usually presented in the young, non-smoking female. The histological feature of WTL-MEC depended mainly on the transition zone of the bi-layered oncocytic epithelium and the multilayered oncocytic epithelium. And MAML2 status can confirm the diagnosis. CRTC1-MAML2 and PRDM11 mutations appear to be the main driver event of WTL-MEC. Prognosis was usually favorable, but recurrence or metastasis may rarely occur.

Coroboration of magnetotelluric investigations with other geophysical anomalies for a case study located in North-West to central part of Romania

2020 ◽  
Author(s):  
Natalia-Silvia Asimopolos ◽  
Laurentiu Asimopolos
Keyword(s):  
Transition Zone ◽  
Sedimentary Cover ◽  
Careful Analysis ◽  
Geological Structure ◽  
North West ◽  
The North ◽  
The Many ◽  
Geophysical Anomalies

<p>The results of the magnetoteluric investigations carried out along the profiles are presented in the form of sections in which the variations of the different parameters, the 2-D modeling, as well as the inversions.</p><p>The results of the geophysical researches (magnetotellurics, gravity, geomagnetics) obtained were aimed at obtaining a unitary image on the deep geological structure in the investigated area. A number of information was obtained regarding such as:</p><ul><li>Determination of the thickness of the package of formations belonging to the post-tectogenetic sedimentary cover of the Transylvanian Depression; sedimentary sedimentary cover, conductive, with a maximum thickness of approximately 4000 m in the Pannonian Depression;</li> <li>Contouring of the Tethysian Major Suture (near the town of Alba Iulia in the Transylvanian Basin), represented by the Transylvanian nappes system (ofiolitic complex and sedimentary formations), with resistivities of about 500 Ohm*m, which separates two blocks with continental crust of different thicknesses (22- 27 km for Internal Dacids and 32-36 km for Median Dacids);</li> <li>Highlighting the change of nappes systems belonging to the Transylvanians, with a wide development both to the north (Căpâlnas-Techereu nappes and the nappes of Groşi and Criş), as well as to the east (the ophiolite complex and sedimentary cover), over the Biharia nappes system, respectively Central-Eastern Carpathian nappes; extension of the Codru and Biharia - Arieşeni nappes, the last with higher resistivities (200 Ohm*m);</li> <li>Highlighting the transcrustal fault that marks the contact between the Inner Dacides and the Median ones;</li> <li>Individualization at the level of the lower crust of a transition zone; significant decrease of resistivity, as a consequence of the presence of the fluids in the transition zone, from the pressure in the pores from lithostatic type to the hydrostatic type (occurs at depths of 22 - 30 km and at temperatures of 350º - 400º C).</li> </ul><p>The electromagnetic data reflect the anomalies of electrical conductivity in a sensitive way, but due to the many causes that can generate them, a careful analysis of the particularities existing for each case, especially the superficial ones, was necessary.</p><p>The correlation of the all the information provided in sections (resistivity, phases, density, magnetic susceptibility), inversions, modeling, lead to the validation of the model.</p>

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