Tuscaloosa Marine Shale formation is a clay- and organic-rich emerging shale play with a considerable amount of hydrocarbon resources. Despite the substantial potential, there have been only a few wells drilled and produced in the formation over the recent years. The analyzed TMS samples contain an average of 50 wt% total clay, 27 wt% quartz and 14 wt% calcite and the mineralogy varies considerably over the small intervals. The high amount of clay leads to pronounced anisotropy and the frequent changes (...) in mineralogy result in the heterogeneity of the formation. We studied the compressional and shear-wave velocities to evaluate the degree of anisotropy and heterogeneity, which impact hydraulic fracture growth, borehole instabilities, and subsurface imaging. The ultrasonic measurements of P- and S-wave velocities from five TMS wells are the best fit to the linear relationship with R2 = 0.84 in the least-squares criteria. We observed that TMS S-wave velocities are relatively lower when compared to the established velocity relationships. Most of the velocity data in bedding-normal direction lie outside constant VP/VS lines of 1.6–1.8, a region typical of most organic-rich shale plays. For all of the studied TMS samples, the S-wave velocity anisotropy exhibits higher values than P-wave velocity anisotropy. In the samples in which the composition is dominated by either calcite or quartz minerals, mineralogy controls the velocities and VP/VS ratios to a great extent. Additionally, the organic content and maturity account for the velocity behavior in the samples in which the mineralogical composition fails to do so. The results provide further insights into TMS Formation evaluation and contribute to a better understanding of the heterogeneity and anisotropy of the play. (shrink)

The present study sets out to investigate the role of ‘culture’ as one of the many important factors that influence the evaluation of politeness in Persian from a Cultural Linguistics perspective. The paper argues that Cultural Linguistics, and in particular the notion of cultural schema, has the potential to offer a robust analytical framework for the exploration of polite use of language. We elaborate on this proposal by presenting examples of data from Persian in which speakers interpret impolite behaviour in (...) light of a number of Persian cultural schemas. The study also offers a novel three-layered approach for the analysis of politeness data that combines metadiscourse analysis with the ethnography of cultural conceptualisations, while highlighting the importance of the notion of ‘heterogeneous distribution’ of cultural conceptualisations, a pivotal theoretical concept in Cultural Linguistics which accounts for the variations in speakers’ evaluation of politeness. (shrink)

With the fantastic features of smartphones, smartphone addiction is a prevalent phenomenon. However, there is a lack of theory-based understanding of how smartphone addiction affects employees’ personal and work lives. The purpose of this study is to investigate the role of smartphone addiction in reinforcing techno exhaustion and life invasion and the final effects of these factors on job performance, and this study applied stress–strain-outcome as the foundation of the model. In total, 475 responses were obtained from office and service (...) workers in Iran by a survey. Our findings show that smartphone addiction leads to enhancement in job performance, whereas it significantly strengthens life invasion and techno exhaustion, and thereby life invasion and techno exhaustion dramatically reduce job performance. Our findings indicate the two-sided role of direct and indirect effects of smartphone addiction. Implications for both organizations and employees are discussed. (shrink)

The present study sets out to investigate the role of ‘culture’ as one of the many important factors that influence the evaluation of politeness in Persian from a Cultural Linguistics perspective. The paper argues that Cultural Linguistics, and in particular the notion of cultural schema, has the potential to offer a robust analytical framework for the exploration of polite use of language. We elaborate on this proposal by presenting examples of data from Persian in which speakers interpret impolite behaviour in (...) light of a number of Persian cultural schemas. The study also offers a novel three-layered approach for the analysis of politeness data that combines metadiscourse analysis with the ethnography of cultural conceptualisations, while highlighting the importance of the notion of ‘heterogeneous distribution’ of cultural conceptualisations, a pivotal theoretical concept in Cultural Linguistics which accounts for the variations in speakers’ evaluation of politeness. (shrink)

Contrary to the assumption in cubic law, the surface of fractures has some degree of roughness, which impacts their fluid dynamics. Incorporating the effect of roughness can improve the simulation of fluid flow in fractures and faults, as well as proppant transport in hydraulic fracturing. To investigate the effect of roughness on the fluid flow, we created a fracture using the Brazilian test, and its roughness was measured using a laser profilometer. Experimental permeability measurements showed a reduction in permeability as (...) the effective stress increased. However, the unmatching surfaces of the fracture prevented its complete mechanical closure. Numerical simulations of the fluid dynamics were conducted on the measured fracture geometry. We determined that the hydraulic fracture aperture is less than the mechanical fracture aperture and that there was anisotropy in the fracture permeability. The ratio of hydraulic fracture aperture to mechanical fracture aperture, as well as anisotropy in fracture permeability, increased when the fracture aperture decreased. The anisotropy in fracture permeability was 45% at the lowest simulated fracture aperture. Integrating the experimental and numerical data, we estimated the fracture porosity and fracture permeability. (shrink)

This article is aimed to rephrase and critique the arguments presented by Joseph LaPorte about the truth of theoretical identity statements in natural sciences. LaPorte is classified as an essentialist who accepts the real kinds, but he denies the essence of the kinds to be discovered. His arguments are based on the vagueness of the terms of kinds. In his view while science progress we convention what is related to the kinds. I evaluate LaPorte's arguments and show they can be (...) applied only for the border terms in scientific theories and so the generalization of the claim is not defensible. (shrink)

Undoubtedly, environmental damage is one of the most important challenges facing contemporary human beings. This is important because the signs that threaten this damage have now become apparent, threatening humans with widespread environmental pollution. On the other hand, humanity will not be able to live a normal life without a safe and healthy environment. Therefore, preservation and protection of the environment, as the most important basic needs of survival, are considered by everyone, including researchers. As a consequence, various studies aim (...) to identify the factors that play a role in how humans and the environment interact. To this end, the present study considered the comprehensiveness of Islam and paid attention to all human needs, and intended to examine the role of religious beliefs on how to interact with the environment. It is worth mentioning that the statistical population of this study comprised 387 Iranian Muslim students from different universities in Iran. After the distribution of standardised research questionnaires whose validity and reliability was confirmed, the collected data were analysed by statistical software. Finally, the results concluded the following: The investigated statistical population pledged and bonded to religious instructions, the investigated statistical population had an appropriate interaction with the environment and the obligation and pledge to religious beliefs had a positive and significant role in people interacting with the environment so that people with strong religious beliefs had a more appropriate interaction with the environment, in opposition to people with less religious beliefs whose interaction with the environment was not apt.Contribution: This research provides further insight into the relations between Theology, religious beliefs and the interaction of people with the environment. (shrink)

The post-September 11th era has presented immense challenges and disappointing setbacks for the advancement of human rights. Yet, the era has also been marked by complexity, paradoxes and ample opportunities for introspection as events expose contemporary human rights' various weaknesses and contradictions. This article provides an overview of the interplay between the human rights concept's various instrumental appropriations and its more autonomous emancipatory capacity manifested in post-September 11th developments. Instead of an exhaustive examination, the article simply poses and juxtaposes different (...) dimensions and layers of the formidable presence of the human rights idea in post-September 11th developments impacting the Middle East. To this end, it places a particular emphasis on human rights' capacity to simultaneously aid, transcend and confront local and international power structures.The article begins with a discussion of the ways in which American hegemony is both bolstered and challenged through human rights discourses after September 11th. It then turns to the Middle Eastern encounter with human rights amidst the American "War on Terror." It is argued that while widespread Middle Eastern consciousness of American appropriations of human rights foster cynicism about the promise and legitimacy of human rights, post-September 11th dynamics have also resulted in greater Middle Eastern engagement with the human rights concept and international human rights norms. In subsequent sections, the article presents a brief outline of the various challenges and openings presented for human rights advocacy in the last few years followed by a discussion of the renewed imperative for a genuine international human rights dialogue. Throughout the article, examples are presented of how pre-existing human rights geographies and hierarchies ascribing relativism to the East and universalism to the West have been unsettled during this period. (shrink)

To avoid steep declines in the Tuscaloosa Marine Shale production, wells are fracture-stimulated to release the hydrocarbons trapped in the matrix of the formation. An accurate estimation of Young’s modulus and Poisson’s ratio is essential for hydraulic fracture propagation. In addition, ignoring the highly heterogeneous and anisotropic character of the Tuscaloosa Marine Shale can lead to erroneous stress values, which subsequently affect hydraulic fracture width estimates and the overall hydraulic fracturing process. An empirical 1D geomechanical model which takes into account (...) VTI anisotropy is developed and used to characterize the elastic mechanical properties of the Tuscaloosa Marine Shale in two wells. In the analyzed formation, vertical Poisson’s ratio is less than the horizontal Poisson’s ratio, which suggests the necessity of an alternative to the ANNIE equations. The stiffness coefficients C13 and C11 were estimated using the relationships developed from the ultrasonic core data available for the two Tuscaloosa Marine Shale wells. Further, correlations between the static and dynamic properties from laboratory tests were used to improve minimum horizontal stress calculation. The paper compares VTI Young’s moduli, Poisson’s ratios and minimum horizontal stress with the isotropic solution. VTI modeling improves the estimation of the elastic mechanical properties. The isotropic solution underestimates the minimum horizontal stress in the formation. Moreover, it was shown that the 20-foot shale interval below the Tuscaloosa Marine Shale base is characterized by a low Young’s modulus and may be a frac barrier. (shrink)

To avoid steep declines in the Tuscaloosa Marine Shale production, wells are fracture-stimulated to release the hydrocarbons trapped in the matrix of the formation. An accurate estimation of Young’s modulus and Poisson’s ratio is essential for hydraulic fracture propagation. In addition, ignoring the highly heterogeneous and anisotropic character of TMS can lead to erroneous stress values, which subsequently affect hydraulic fracture width estimates and the overall hydraulic fracturing process. We have developed an empirical 1D geomechanical model that takes into account (...) VTI anisotropy, and it is used to characterize the elastic mechanical properties of TMS in two wells. In the analyzed formation, the vertical Poisson’s ratio is less than the horizontal Poisson’s ratio, which suggests the necessity of an alternative to the ANNIE equations. The stiffness coefficients [Formula: see text] and [Formula: see text] were estimated using the relationships developed from the ultrasonic core data available for the two TMS. Further, correlations between the static and dynamic properties from laboratory tests were used to improve the minimum horizontal stress calculation. We compare VTI Young’s moduli, Poisson’s ratios, and minimum horizontal stress with the isotropic solution. VTI modeling improves the estimation of the elastic mechanical properties. The isotropic solution underestimates the minimum horizontal stress in the formation. Moreover, it was shown that the 20 ft shale interval below the TMS base is characterized by a low Young’s modulus and may be a frac barrier. (shrink)

Brittleness is one of the most important reservoir properties for unconventional reservoir exploration and production. Better knowledge about the brittleness distribution can help to optimize the hydraulic fracturing operation and lower costs. However, there are very few reliable and effective physical models to predict the spatial distribution of brittleness. We have developed a machine learning-based method to predict subsurface brittleness by using multidiscipline data sets, such as seismic attributes, rock physics, and petrophysics information, which allows us to implement the prediction (...) without using a physical model. The method is applied on a data set from Tuscaloosa Marine Shale, and the predicted rock physics template is close to the calculated value from conventional inverted elastic parameters. Therefore, the proposed method helps determine areas of the reservoir that have optimal geomechanical properties for successful hydraulic fracturing. (shrink)

Anxiety is a common unpleasant reaction among patients undergoing surgery. Many non-pharmacological methods such as spiritual strength are effective in preoperative anxiety management. This study aimed to assess the effects of listening to Quran recitation on reducing preoperative anxiety. A systematic review was performed in Medline, EMBASE, Cochrane Library, PsycINFO, Arab World Research Source, and other relevant databases to collect the data. Randomized controlled trials about the effects of listening to Quran recitation on preoperative anxiety reduction in elective surgery were (...) selected without any language and date restriction. Interventions with self-reading/self-recitation were excluded. The Cochran’s Q statistic and the I2 index with 50% threshold were used for calculating the heterogeneity and inconsistency index. Subgroup analysis was conducted based on the surgery type. The funnel plot was used to evaluate the possibility of publication bias. Twelve studies were included in the qualitative synthesis and nine studies in the quantitative synthesis. The meta-analysis showed a significant anxiety reduction with listening to Quran recitation. The heterogeneity between the included studies was statistically significant. The pooled effect size of anxiety was d = −8.893 = −10.763 to −7.022). The subgroup analysis showed that listening to Quran recitation reduces anxiety in major and minor surgeries. There was no publication bias in the studies. The findings indicated that listening to Quran recitation can be considered a non-invasive and peaceful intervention to reduce preoperative anxiety in elective surgery. (shrink)