Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 1674 for “"tight"”.
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Unit commitment : tight formulation and pricing
… flexibility limits. Next, we present a tight formulation for the commitment of combined-cycle units with representation of their transition ramping. Finally, we propose a pricing method that reduces out-of-market payments in multi-interval real-time markets.
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Fracture Growth Kinematics in Tight Sandstone Reservoirs
Opening-mode fractures—joints and veins—are widespread structures in sedimentary rocks even in slightly deformed and flat-lying sequences. Understanding the growth and connectivity of fractures in low permeability sandstone reservoirs is essential for optimal hydrocarbon exploitation. In a linear …
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Tight contact structures on small Seifert spaces
… the relation between the Euler number of a tight contact small Seifert space and the contact framing of Legendrian vertical circles in it, and apply this relation to classify up to isotopy tight contact structures on small Seifert spaces with e₀ [not equal to] 0, -1, -2.
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MOLECULAR PHYSIOLOGY OF BLOOD-BRAIN BARRIER TIGHT JUNCTIONS
… of the BBB see from the perspective of its tight junctions (TJ). Tight junctions are a protein-protein adhesion structures that seal the paracellular space for small solutes. Tight junctions are a common feature in many epithelial and endothelial tissues and a crucial component of the BBB. …
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Targeting the tight junction : immunotherapy of colon cancer
A33 is a cell surface glycoprotein of colon epithelium with a long clinical history as a target in antibody-based cancer therapy. Despite being present in normal colon, radio-labeled antibodies against A33 are selectively retained by tumors at long time points. Accordingly, we have studied the …
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Nearly tight oblivious subspace embeddings by trace inequalities
… Furthermore, the bounds obtained are much tighter than previous ones, matching known lower bounds up to a single log(d) factor in embedding dimension (previous results had more log factors and also had suboptimal tradeoffs with sparsity).
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Compositional modeling of gas injection in tight oil reservoirs
The commercial development of tight oil reservoirs has reshaped the landscape of the petroleum industry in North America. However, the recovery factor (RF) of tight oil with primary depletion is very low, mostly below 10%. With a large volume of remaining oil in tight oil reservoirs, the successful …
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Compositional modeling of gas injection in tight oil reservoirs
The commercial development of tight oil reservoirs has reshaped the landscape of the petroleum industry in North America. However, the recovery factor (RF) of tight oil with primary depletion is very low, mostly below 10%. With a large volume of remaining oil in tight oil reservoirs, the successful …
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Production Analysis and Enhancement in The Unconventional Tight Formations
… using multistage hydraulic fracturing for tight/shale oil and gas development. Analysis of the existing wells’ performance and development of production enhancement techniques are of critical interest for the improvement of the development efficiency in these formations. Production …
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Oil Potential of Middle Cretaceous Tight Carbonate in Mexico
This thesis investigates a tight overpressured Cretaceous carbonate formation in Field A of Mexico. The Cretaceous carbonate was penetrated by well A1 and tested oil successfully during an open-hole test covering interval 5356 to 5515 m (MD) that produced oil of 33 degrees API. Initial pressure was …
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Rate-Transient Analysis of Tight Oil and Gas Reservoirs
… technologies applied to low-permeability (tight) oil and gas reservoirs in recent decades, resulting in commercial production. For each stage in a MFHW, the formation is fractured by injecting water and sand at high pressure. The resulting hydraulic fracture system enhances production from …
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Critical power characteristics of axially heterogeneous tight bundle designs
… Reactors (BWRs). This is especially true for the tight bundle design of the Resource-Renewable BWR (RBWR) proposed by Hitachi, Ltd. Unlike a traditional square lattice BWR fuel bundle, the RBWR bundle is a relatively short tight hexagonal lattice with axially heterogeneous fuel composition for …
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Thermal-hydraulic analysis of tight lattice light water reactors.
Thesis. 1977. M.S.--Massachusetts Institute of Technology. Dept. of Nuclear Engineering.
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Oil and gas property evaluation with emphasis on tight sands
Includes bibliographical references.
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Coset Types and Tight Subgroups of Almost Completely Decomposable Groups
… decomposable group as subgroup of finite index. Tight subgroups are maximal subgroups (with respect to set inclusion) among the completely decomposable subgroups of an almost completely decomposable group. In this dissertation we show an extended version of the theorem of Bezout, give a new …
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Role of Occludin in the Regulation of Epithelial Tight Junctions
<p>Tight junctions (TJ) constitute the primary component of epithelial barrier function, a disruption of which is involved in the pathogenesis of many gastrointestinal, pulmonary and renal diseases. Occludin is the major transmembrane protein of TJ, a deletion of which leads to a complex phenotype …
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Simultaneous Multiple Plane to Plane Waterflooding in Fractured Tight Reservoirs
… efforts to apply waterflooding to unconventional tight oil formations have not met much success. The purpose of this research is to investigate the effectiveness of a novel 3-well pattern using horizontal wells (one injector and two producers, or one producer and two injectors) with multiple …
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Oil and gas property evaluation with emphasis on tight sands
Includes bibliographical references.
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