bluuebunny/crossref_metadata_2025_split huggingface dataset:
Impact of Biogeomechanical Process on CO2 Sequestration in Hydrocarbon-Depleted Carbonate Reservoirs
Authors: Kolawole O. , Ispas I. , Schwartz B. 
Published: September 2022

ABSTRACT:
Carbon dioxide (CO2) sequestration in depleted oil and gas reservoirs is a key technology to mitigate anthropogenic CO2 emissions. In this study, we experimentally investigate the impact of biogeomechanical alteration on CO2 storage in a hydrocarbon-depleted carbonate reservoir using core samples from a deep carbonate formation in the Permian Basin United States. We first obtain the mechanical and microstructural properties of the carbonate samples using the scratch test method, and we treat the samples with a bacteria strain at distinct conditions. Then we expose the samples to CO2 in a supercritical state (ScCO2) for 21 days. We obtain the post-treatment properties of the microbially-treated samples and analyze the effect of the modified properties on long-term CO2 storage in the carbonate formation. Our results indicate that in hydrocarbon-depleted carbonate reservoirs, microbially-altered properties can enhance mechanical integrity and provide potential long-term security for stored CO2.

1 INTRODUCTION
Carbon capture and storage (CCS) in geologic formations is a key technology for climate change to mitigate anthropogenic CO2 emission (Holloway, 1997; Lackner, 2003; Lebedev et al., 2017; Badghaish and Schwartz, 2021; Kolawole et al., 2021a; Ozotta et al., 2021a; Schwartz, 2022). Geologic media such as saline aquifers (Langenfeld et al., 2017a), limestone (Gozalpour et al., 2005; Lebedev et al., 2017), sandstone, basalt (Langenfeld et al., 2017b; Menefee and Ellis, 2021), and shale (Fatah et al., 2021a, 2021b; Kolawole et al., 2021a, 2021b, 2021c; Onwumelu et al., 2021; Ozotta et al., 2021a, 2021b, 2021c) are potential target CO2 storage reservoirs.
Biogeomechanics is an emerging field of geomechanics that investigates geomechanical responses of microbial-rock interactions (Kolawole et al., 2021a, 2021b, 2021c). The microbe, Sporosarcina pasteurii (ATCC® 11859™) (Yoon et al., 2001), is observed to rapidly precipitate calcite in sand columns as the bacteria growth increases, for selective cementation and plugging of porous media (Stocks-Fischer et al., 1999; Kolawole et al., 2021a, 2021b).
Study on Scale Effect of Soil-Rock Mixture Based on Model Test and PFC
Authors: Wei Zhang , YaDong Xue 
Published: September 2022

ABSTRACT:
Soil-Rock Mixture (S-RM) are widely found in the mountainous areas of southwestern China. The study of rock mechanical properties of S-RM is of great significance for preventing and controlling landslides or other geological disasters. Due to the large differences in rock content and particle gradation, the mechanical properties of S-RM show significant scale effects. This article discusses the "Representative elementary volume" (REV) properties of the S-RM under the condition of different rock-soil volume ratios. Based on the indoor biaxial experiment, the paper firstly establishes a two-dimensional discrete element model suitable for S-RM; Secondly, considering the rock content, by numerical simulation method based on PFC discrete element software, a total of 126 sets of biaxial tests were performed to obtain the cohesion and internal friction angle of the S-RM. By analyzing systematically experimental data of PFC, the corresponding scale effect curves are fitting. After the samples overcome the scale effect, the REV laws of the S-RM under different control variables are obtained. The engineering scale of the S-RM samples is about 600×200 mm. In actual projects, this sample size can be selected for testing or numerical simulation to reduce the scale effect.

1. INTRODUCTION
Soil-rock mixture was defined by Xu and Hu (2009) as an extremely inhomogeneous and loose geotechnical material composed of rocks with high strength at a certain engineering scale, pore spaces and soil particles. Soil-rock mixtures are widely distributed throughout China, especially in the southwest. Landslide mounds and rock piles commonly found in southwestern mountainous areas are mostly composed of soil-rock mixtures. Due to the inhomogeneity of soil-rock mixture, mechanical properties have large spatial variability so that the study of mechanical properties and ontological characteristics are very difficult. The study of soil-rock mixtures is significant for the prevention and control of geological hazards such as landslides and collapse.
Effect of Supercritical CO2 on Permeability and Surface Characteristics of Fractures in Shales
Authors: Hashemi S. S. , Zoback M. D. 
Published: September 2022

ABSTRACT:
The impacts of supercritical carbon dioxide (scCO2) on fracture permeability and fracture surface characteristics of shale samples with various mineral compositions were studied in this paper. We measured permeability and fracture normal displacement (FND) at different confining pressures and pore pressures using both argon gas and scCO2. Our results indicate that mechanical compaction and fine particles migration have opposite impacts on permeability and FND, especially in clay-rich shales. It appears that fine particle migration creates a self-propping aperture that results a permeability increase in the subsequent cycle. However, inelastic compaction associated with loading/unloading cycles reduce the permeability. In addition, an increase in permeability (and associated fracture surface degradation) were observed after more than 3 days of exposure to scCO2 due to carbonate dissolution. The rates of permeability increase in saw cut fractures are larger than FND suggesting that new flow pathways were created because of carbonate dissolution and that controls the transport characteristics of the scCO2-interacted fracture surface.

1. INTRODUCTION
Geological carbon capture and storage (CCS) is one of the techniques to reduce green gas emissions and storage of CO2 in unconventional reservoirs has been the focus of many studies in the last few years (Goodman et al. 2020; Kim et al. 2017; Kolawole et al. 2020). Methane is found as a free phase in pores and fractures and also as adsorbed gas on clay or organic matter in shale gas plays. After the reservoir is depleted, CO2 could be sequestrated by similar mechanisms as methane in two populations. Supercritical CO2 (scCO2) has been also proposed as an alternative fracturing fluid for hydraulic fracturing operations in unconventional reservoirs (Ishida et al. 2012; Jia et al. 2019; Zhang et al. 2017). The phase diagram for carbon dioxide shows that CO2 behaves as a supercritical fluid that adopts properties somewhere between a gas and a liquid above the critical temperature and critical pressure of 31.1 °C and 7.37 MPa, respectively. Compared to aqueous-based fluids, scCO2 can develop more complicated fracture networks, improve shale gas recovery by preferential adsorption behaviors of CO2 over methane, reduce flow blockages and reduce water consumption (Zhou et al. 2020). For instance, a study on Yan-2011 shale gas by Li and Kang, (2018) showed that after scCO2 fracturing, the CO2-retention rate was 39.5% and the shale gas production rate was increased 1.5 times. Nevertheless, scCO2 has a lower viscosity than water in the reservoir temperature and pressure and that reduces its efficiency of carrying proppants into the fracture networks.
Revision of the genus Dicranopalpus from northern Spain and Corsica, with descriptions of two new species (Arachnida, Opiliones, Phalangioidea)
Authors: Wijnhoven Hay , Martens Jochen , Prieto Carlos E. 
Published: September 2022

The Iberian Peninsula represents a diversity hotspot for the genus Dicranopalpus. However, most taxa are insufficiently defined. Our revision of the Dicranopalpus pyrenaeus species group reveals two hidden species: D. catariegensis sp. nov. and D. gallaecicus sp. nov. Two species, D. pyrenaeus from the Spanish and French Pyrenees and D. insignipalpis from Corsica, are redescribed. Dicranopalpus cantabricus Dresco, 1953 is resurrected as a valid species. Three new synonyms of D. martini (Simon, 1878) are proposed: Fagea bolivari Dresco, 1949 (including D. bolivari sensu Rambla 1975), Egaenasser extraordinarius Roewer, 1953 and Dicranopalpus dispar Rambla, 1967. With these additions, the Iberian Peninsula harbours four species of the Dicranopalpus pyrenaeus species group. They largely have allopatric distributions, ranging from the Pyrenees and the Cantabrian mountain range to the west coast of Galicia.
The Meaning of Proofs
Authors: Lolli Gabriele 
Published: September 2022

Why mathematics is not merely formulaic: an argument that to write a mathematical proof is tantamount to inventing a story.
In The Meaning of Proofs, mathematician Gabriele Lolli argues that to write a mathematical proof is tantamount to inventing a story. Lolli offers not instructions for how to write mathematical proofs, but a philosophical and poetic reflection on mathematical proofs as narrative. Mathematics, imprisoned within its symbols and images, Lolli writes, says nothing if its meaning is not narrated in a story. The minute mathematicians open their mouths to explain something—the meaning of x, how to find y—they are framing a narrative.
Every proof is the story of an adventure, writes Lolli, a journey into an unknown land to open a new, connected route; once the road is open, we correct it, expand it. Just as fairy tales offer a narrative structure in which new characters can be inserted into recurring forms of the genre in original ways, in mathematics, each new abstract concept is the protagonist of a different theory supported by the general techniques of mathematical reasoning. In ancient Greece, there was more than an analogy between literature and mathematics, there was direct influence. Euclid's proofs have roots in poetry and rhetoric. Mathematics, Lolli asserts, is not the mere manipulation of formulas.
Working with AI
Authors: Davenport Thomas H. , Miller Steven M. 
Published: September 2022

Two management and technology experts show that AI is not a job destroyer, exploring worker-AI collaboration in real-world work settings.
This book breaks through both the hype and the doom-and-gloom surrounding automation and the deployment of artificial intelligence-enabled—“smart”—systems at work. Management and technology experts Thomas Davenport and Steven Miller show that, contrary to widespread predictions, prescriptions, and denunciations, AI is not primarily a job destroyer. Rather, AI changes the way we work—by taking over some tasks but not entire jobs, freeing people to do other, more important and more challenging work. By offering detailed, real-world case studies of AI-augmented jobs in settings that range from finance to the factory floor, Davenport and Miller also show that AI in the workplace is not the stuff of futuristic speculation. It is happening now to many companies and workers.
These cases include a digital system for life insurance underwriting that analyzes applications and third-party data in real time, allowing human underwriters to focus on more complex cases; an intelligent telemedicine platform with a chat-based interface; a machine learning-system that identifies impending train maintenance issues by analyzing diesel fuel samples; and Flippy, a robotic assistant for fast food preparation. For each one, Davenport and Miller describe in detail the work context for the system, interviewing job incumbents, managers, and technology vendors. Short “insight” chapters draw out common themes and consider the implications of human collaboration with smart systems.
Practice Movements
Authors: Eckert Julia 
Published: September 2022

Practice movements are forms of unorganized collective action that have always been and are central sites of politics. Their goals are expressed in practices rather than in words, and their often “pre‐ideological” practices directly and pragmatically aim at transforming or redistributing access to goods, whether material or symbolic. They are transgression rather than resistance in that they transgress restrictions inherent in the material organization of space, property relations, status orders, and normative regulations, be they laws, morals, or customs. Practice movements are above all about access and participation; they thus have an ambiguous relation to the transformation of the status quo. Their politics are transformative in as much as they challenge forms of exclusion and inequality. They can produce temporary or lasting changes in the material grounds or in the regulation of the everyday life of those who pursue them, and potentially of the normativity and the organization of the wider social order.
Ion‐Migration Mechanism: An Overall Understanding of Anionic Redox Activity in Metal Oxide Cathodes of Li/Na‐Ion Batteries
Authors: Lai Yangyang , Xie Huixian , Li Peng , Li Biao , Zhao Along , Luo Laibing , Jiang Zewen , Fang Yongjin , Chen Shengli , Ai Xinping , Xia Dingguo , Cao Yuliang 
Published: September 2022

AbstractThe anionic redox reaction (ARR) has attracted extensive attention due to its potential to enhance the reversible capacity of cathode materials in Li/Na‐ion batteries (LIBs/SIBs). However, the understanding of its activation mechanism is still limited by the insufficient mastering of the underlying thermodynamics and kinetics. Herein, a series of Mg/Li/Zn‐substituted NaxMnO2 and LixMnO2 cathode materials are designed to investigate their ARR behaviors. It is found that the ARR can be activated in only Li‐substituted LixMnO2 and not for Mg‐ and Zn‐substituted ones, while all Mg/Li/Zn‐substituted NaxMnO2 cathode materials exhibit ARR activities. Combining theoretical calculations with experimental results, such a huge difference between Li and Na cathodes is closely related to the migration of substitution ions from the transition metal layer to the alkali metal layer in a kinetic aspect, which generates unique Li(Na)–O–□TM and/or □Li/Na–O–□TM configurations and reducing reaction activation energy to trigger the ARR. Based on these findings, an ion‐migration mechanism is proposed to explain the different ARR behaviors between the NaxMnO2 and LixMnO2, which can not only reveal the origin of ARR in the kinetic aspect, but also provide a new insight for the development of high‐capacity metal oxide cathode materials for LIBs/SIBs.
Phosphate Functionalized Ionic Liquid: An Efficient Li+ Migration Inhibitor and Hole Extraction Accelerator for Perovskite Solar Cells
Authors: Hou Wenjing , Ma Yuting , Kang Jin , Xiao Yaoming , Han Gaoyi 
Published: September 2022

AbstractLithium bis(trifluoromethanesulfonyl)imide (Li‐TFSI) doped 2,2′,7,7′ ‐tetrakis(N,N‐di‐p‐methoxyphenylamine)‐9,9′‐spirobifluorene (Spiro‐OMeTAD) is employed as one of the most common hole transport layer. However, the Li+ in Li‐TFSI is easy to migrate from Spiro‐OMeTAD to perovskite and SnO2, left the voids/pinholes in perovskite film to accelerate the invasion of oxygen and moisture, and lead to the device degradation. Here, the 1‐butyl‐3‐methyl imidazolium phosphate dibutyl ester ([Bmim]+[DBP]−) ionic liquid (IL) is prepared and used to modify the perovskite/Spiro‐OMeTAD interface in the perovskite solar cells. The coordination interaction between P  O in [Bmim]+[DBP]− IL and Pb2+ can improve the morphology of perovskite film by passivating the uncoordinated Pb2+ defects. The interaction between P  O and Li+ can suppress the undesired Li+ migration. The regulated energy level assignment and ion nature of [Bmim]+[DBP]− IL can accelerate the carrier extraction at perovskite/Spiro‐OMeTAD interface. The device based on the [Bmim]+[DBP]− IL interface modification yields a highly efficient photoelectric conversion efficiency of 21.16% and improved stability, outperforming that of control (19.31%) devices under the illumination of 100 mW cm−2 (AM 1.5 G).
Bringing the lab bench to the field: Point‐of‐care testing for enhancing health research and stakeholder engagement in rural/remote, indigenous, and resource‐limited contexts
Authors: Madimenos Felicia C. , Gildner Theresa E. , Eick Geeta N. , Sugiyama Lawrence S. , Snodgrass James J. 
Published: September 2022

AbstractPoint‐of‐care testing (POCT) allows researchers and health‐care providers to bring the lab bench to the field, providing essential health information that can be leveraged to improve health care, accessibility, and understanding across clinical and research settings. Gaps in health service access are most pronounced in what we term RIR settings—rural/remote regions, involving Indigenous peoples, and/or within resource‐limited settings. In these contexts, morbidity and mortality from infectious and non‐communicable diseases are disproportionately higher due to numerous geographic, economic, political, and sociohistorical factors. Human biologists and global health scholars are well‐positioned to contribute on‐the‐ground‐level insights that can serve to minimize global health inequities and POCT has the potential to augment such approaches. While the clinical benefits of POCT include increasing health service access by bringing testing, rapid diagnosis, and treatment to underserved communities with limited pathways to centralized laboratory testing, POCT also provides added benefits to both health‐focused researchers and their participants. Through portable, minimally invasive devices, researchers can provide actionable health data to participants by coupling POCT with population‐specific health education, discussing results and their implications, creating space for participants to voice concerns, and facilitating linkages to treatment. POCT can also strengthen human biology research by shedding light on questions of evolutionary and biocultural importance. Here, we expand on the epidemiological and research value, as well as practical and ethical challenges of POCT across stakeholders (i.e., participant, community, health researcher, and trainee). Finally, we emphasize the immense opportunities of POCT for fostering collaborative research and enhancing access to health delivery and information and, by extension, helping to mitigate persistent global health inequities.
Comorbidity‐driven multi‐modal subtype analysis in mild cognitive impairment of Alzheimer's disease
Authors: Katabathula Sreevani , Davis Pamela B. , Xu Rong 
Published: September 2022

AbstractBackgroundMild cognitive impairment (MCI) is a heterogeneous condition with high individual variabilities in clinical outcomes driven by patient demographics, genetics, brain structure features, blood biomarkers, and comorbidities. Multi‐modality data‐driven approaches have been used to discover MCI subtypes; however, disease comorbidities have not been included as a modality though multiple diseases including hypertension are well‐known risk factors for Alzheimer's disease (AD). The aim of this study was to examine MCI heterogeneity in the context of AD‐related comorbidities along with other AD‐relevant features and biomarkers.MethodsA total of 325 MCI subjects with 32 AD‐relevant comorbidities and features were considered. Mixed‐data clustering is applied to discover and compare MCI subtypes with and without including AD‐related comorbidities. Finally, the relevance of each comorbidity‐driven subtype was determined by examining their MCI to AD disease prognosis, descriptive statistics, and conversion rates.ResultsWe identified four (five) MCI subtypes: poor‐, average‐, good‐, and best‐AD prognosis by including comorbidities (without including comorbidities). We demonstrated that comorbidity‐driven MCI subtypes differed from those identified without comorbidity information. We further demonstrated the clinical relevance of comorbidity‐driven MCI subtypes. Among the four comorbidity‐driven MCI subtypes there were substantial differences in the proportions of participants who reverted to normal function, remained stable, or converted to AD. The groups showed different behaviors, having significantly different MCI to AD prognosis, significantly different means for cognitive test‐related and plasma features, and by the proportion of comorbidities.ConclusionsOur study indicates that AD comorbidities should be considered along with other diverse AD‐relevant characteristics to better understand MCI heterogeneity.
Using a Specimen Resource Aid to Reduce Intraoperative Specimen Errors
Authors: Simiele Kayla C. , Gerlesberger Shelby R. , Johnshoy Amanda G. 
Published: September 2022

ABSTRACTSpecimen management is a critical component of safe patient care. Incorrect results or misdiagnoses may cause delayed or improper treatment and delayed or adverse outcomes. We piloted a quality improvement project to address labeling errors in a surgical suite at a large Midwestern academic medical center. We created a gynecology‐specific source aid to assist intraoperative team members define the tissue source according to anatomic location and pathology department regulations. The aid also provided tips on preparing and transporting specimens. Staff member feedback showed that the source aid was user‐friendly and helpful. Most specimen errors after the implementation of the aid were related to nonreportable, fixation delays; and we implemented a second phase to address the delays. Collaboration and education during this project fostered staff member empowerment to manage specimens effectively using the source aid and promote safe patient care.
Characteristics and in‐hospital outcomes of elderly patients with cancer in a top‐ranked hospital in China, 2016–2020: Real‐world study
Authors: Huang Lei , Shi Yan , Wang Lei , Rong Lan , Ren Yan , Xu Chenying , Wu Junwei , Zhang Mingmin , Zhu Lifeng , Zhang Junjie , Xu Xiaofeng , Hu Weiguo , Zhang Jun 
Published: September 2022

AbstractBackgroundCancer is mostly a disease of aging, and older patients with cancer are generally frailer. This study aimed to describe the characteristics and in‐hospital outcomes and explore factors associated with duration, cost, and mortality during first hospitalization, in older patients with cancer admitted to a top‐ranked hospital in China.MethodsData on patients with solid cancer ≥65 years consecutively hospitalized in 2016–2020 were retrieved from the electronic medical records of Ruijin Hospital in Shanghai, China. Baseline characteristics, duration, cost, and mortality during hospitalization were described. Factors associated with duration, cost, and mortality during first hospitalization were explored using multivariable‐adjusted logistic regression.Results20,650 eligible patients with male proportion of 59% and median age of 70 years were analyzed. 45% of the patients underwent resection in our hospital. Upon first admission, 49% of patients had hypertension, 19% diabetes, 22% weight loss, and 28% risks of malnutrition. The median duration and cost of first hospitalization were 9 days and 32,000 RMB, respectively. 118 (0.6%) and 228 (1.1%) deaths occurred during first and any hospitalization, respectively. For first hospitalization, longer duration and higher cost were positively associated with older ages, male gender, emergency admission, certain tumor locations and histology, histories of diabetes, cirrhosis, and anticoagulant intake, higher body mass index, weight loss, reduced food intake, risk of falling, and worse self‐care ability; in‐hospital mortality was positively associated with age ≥85 years, emergency admission, certain cancer types, histories of hypertension and psychotropic intake, reduced food intake, and worse self‐care ability.ConclusionsThis study identified certain baseline patient and tumor characteristics, medical and medication histories, changes of weight and food intake, diet, and self‐care ability which were independently associated with in‐hospital outcomes among older patients with cancer admitted to our hospital and which should be paid special attention to. While the factors might not be easily modifiable, our study can help identify patients at higher risks of inferior in‐hospital outcomes.