Through a dual-ligand strategy, three mixed ligands metal–organic frameworks (MOFs), namely, {[Zn2(Py2TTz)2(BDC)2]·2(DMF)·0.5(H2O)}n (1), {[Cd2(Py2TTz)2(BDC)2]·2(DMF)}n (2), and {[Co2(Py2TTz)2(BDC)2]·2(DMF)·0.5(H2O)}n (3) (where Py2TTz = 2,5-bis(4-pyridyl)thiazolo[5,4-d]thiazole, BDC 1,4-benzenedicarboxylate, DMF N,N-dimethylformamide), were synthesized under solvothermal conditions. The single-crystal X-ray diffraction analyses reveal that the MOFs possess similar 2-fold interpenetrated...

Two amino functionalized Metal-Organic Frameworks (MOFs), {[Zn(Py2TTz)(2-NH2-BDC)]·(DMF)}n (1) and {[Cd(Py2TTz)(2-NH2-BDC)]·(DMF)·0.5(H2O)}n (2) (where Py2TTz = 2,5-bis(4-pyridyl)thiazolo[5,4-d]thiazole, 2-NH2-BDC 2-amino-1,4-benzenedicarboxylate, DMF N,N-dimethylformamide), were synthesized characterized using the primary ligand 2-amino-1,4-benzenedicarboxylic acid (2-NH2-H2BDC) auxiliary 2,5-bis(4-pyridyl)thiazolo[5,4-d]thiazole (Py2TTz). They possess similar 2-fold interpenetrated...

The mechanisms of CO2/CH4 adsorption in coal are the theoretical foundation for CO2 sequestration seams targeted enhanced coalbed methane recovery. Herein, by changing model (low rank coal: WMC, middle XM and high CZ) with plenty side aliphatic chains functional groups established literature, influence mechanism pore parameters groups(-CH3, -OH, -C2O, -C=O) on CH4 different coals systematically studied. Using Connolly surface algorithm to calculate volume (VF) specific area (SSA) groups, it...

Water huff-n-puff is considered to be an available method exploit unconventional oil reservoirs, which can significantly promote the reservoir pressure and facilitate water–oil exchange under imbibition effect. To explore production characteristics well performance during water in Huanjiang field that a tight reservoir, tests were carried out performances investigated. Moreover, simulation works conducted study various factors influence performance. Furthermore, sensitivity analysis for was...

To address the fast productivity decline of horizontal wells and low oil recovery during natural depletion in Baikouquan formation, approach solution gas re-injection was proposed with primary objective further developing this formation. Herein, a field-scale numerical compositional reservoir model built up based on formation properties then effects permeability, fractures stress production dynamics were thoroughly investigated. A sensitivity analysis, which can correlate these parameters,...

Constructed from rigid 2,5‐bis(4‐pyridyl)thiazolo[5,4‐ d ]thiazole (Py 2 TTz) and various dicarboxylic acids [2‐methyl‐1,4‐benzenedicarboxylic acid (2‐CH 3 ‐H BDC), 5‐methyl‐1,3‐benzenedicarboxylic (5‐CH 2,5‐dimethyl‐1,4‐benzenedicarboxylic (2,5‐di‐CH 2,5‐dihydroxyl‐1,4‐benzenedicarboxylic (2,5‐di‐OH‐H 1,4‐naphthalenedicarboxylic (1,4‐H NDC), 2,6‐naphthalenedicarboxylic (2,6‐H NDC)], nine novel Zn(II)/Cd(II) MOFs have been synthesized under solvothermal conditions. They possess diverse...

In CO2-enhanced coalbed methane (CO2-ECBM) engineering, accurate knowledge of the interaction mechanism CO2 and coal matrix is crucial for improving recovery CH4 contributing to geological sequestration CO2. This study performed prove accuracy molecular simulation calculate variation characteristics pore structure, volumetric strain, mechanical properties, Fourier transform infrared (FT-IR) spectra, system free energy by dynamics (MD) grand canonical Monte Carlo (GCMC) methods. According...

The Upper Paleozoic tight sandstone reservoirs on the eastern margin of Ordos Basin exhibit strong heterogeneity and complex pore structures, leading to poor correlation between porosity permeability insufficient accuracy in calculations meet requirements reservoir fine evaluation. Therefore, a new method for high-precision calculation based flow zone index (FZI) classification is proposed. This determines number classifications characteristics FZI normal probability distribution plot...

A series of novel 2-arylphenyl ether-3-(1H-1,2,4-triazol-1-yl)propan-2-ol derivatives were designed and synthesized as candidate fungicides. The new compounds identified by (1)H NMR spectroscopy element analysis. Their antifungal activities evaluated. They exhibited excellent against five common pathogens in comparison with the commercial fungicides tebuconazole difenoconazole. three triazole alcohol compared those difenoconazole at a concentration 1 mug/mL.

With immense potential to enhance oil recovery, CO2 has been extensively used in the exploitation of unconventional tight reservoirs. Significant variations are observed occur oil’s composition as well its physical properties after interacting with CO2. To explore impacts on extraction efficiency, two different types crude (light and heavy oil) huff-n-puff experiments. Moreover, numerical simulation is implemented quantitatively inspect influencing factors including production time,...

Deep learning methods have demonstrated the ability to perform accurate coronary artery calcium (CAC) scoring. However, these require large and representative training data hampering applicability diverse CT scans showing heart arteries. Training that accurately score CAC in cross-domain settings remains challenging. To address this, we present an unsupervised domain adaptation method learns scoring angiography (CCTA) from non-contrast (NCCT). shift between NCCT (source) CCTA (target)...

Abstract C 13 H 22 N 9 O 3 Cl 2 Co, monoclinic, P 1 / n (no. 14), a = 7.7939(4) Å, b 23.1095(11) c 11.7358(7) β 108.179(6)°, V 2008.3 (2) Å , Z 4, R gt ( F ) 0.0485, w ref 0.1002, T 293(2) K.

Abstract In view of large amounts associated gas produced in the late stage CO2 flooding Jilin Oilfield, production characteristics CO 2 are divided into three stages (i.e. before injected breakthrough, during breakthrough and after breakthrough). Taking formation pressure as miscibility evaluation criteria, effect from different is evaluated. According to stages, reinjection method mixing with pure under proportions proposed elevate utilization degree gas. The results indicate that at very...

DNBSEQ employs a patterned array to facilitate massively parallel sequencing of DNA nanoballs (DNBs), leading considerable boost in throughput. By employing the ultra-high-density (UHD) with an increased density DNB binding sites, throughput can be further expanded. However, typical imaging system sequencer is unable resolve adjacent DNBs spaced smaller than resolution limit, resulting poor base-calling performance UHD and hindering its practical application. In this study, we propose...

Asian Journal of Chemistry, a Multidisciplinary Chemistry is an Peer Reviewed International and publishes from India. The journal has been established since January 1989 on firm foundation Quality Research. This encompasses all branches chemistry its sub – disciplines like Pharmaceutical, Biological activities Synthetic Drugs, Environmental Biochemistry, Polymer Petroleum Agricultural etc.

It is crucial to obtain the representative relative permeability curves for related numerical simulation and oilfield development. The influence of temperature on curve remains unclear. An unsteady method was adopted investigate (range from 25–130 °C) oil–water sandstone reservoirs in different blocks. Then, experimental data analyzed by using an improved Johnson–Bossler–Naumann method. Results reveal that with increase within a certain range: (1) oil water phases increases; (2) irreducible...

In the title compound, C(7)H(12)N(2)O(2)S(2), conformation of dithia-cyclo-pentane ring is a half-chair, with total puckering amplitude Q(T) = 0.473 (5) Å. Inter-molecular C-H⋯N and C-H⋯O inter-actions help to establish packing.

In the Daqing oilfield, Heilongjiang Province, China, in eastern part of Sabei II District is a fi ne potential-tapping demonstration area with long development time and complex history well conditions. As oil exploration has entered into high-water cut stage, fine description reservoir structure had great significance to improve effect exploration. An abandoned channel an important basis for recognizing single river border point bar. The top sand-shale interbedded or muddy sediments have shelter...