bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sequence stratigraphy of the Late Cretaceous–Paleocene Gurpi Formation in southwest Iran
Authors: Beiranvand Bijan , Ghasemi-Nejad Ebrahim , Kamali Mohammad Reza , Ahmadi Akram 
Published: October 2021

ABSTRACT
Facies associations, microplanktonic diversity, palynofacies variations, geochemical data, and natural gamma-ray logs were analyzed from the Danial and Gurpi sections of the Campanian–Selandian Gurpi Formation in the Zagros Mountains, southwest Iran. The biostratigraphic data indicate that deposition across the Cretaceous/Paleogene boundary was continuous in the Danial Section. In contrast, a minor stratigraphic break seems to be present in the Gurpi Section, where several planktonic foraminiferal subzones are not identified. Nine depositional sequences were interpreted and correlated between the two sections. They are apparently of great lateral extent because they closely correlate to the global sea-level cycles. The Maastrichtian maximum flooding surface MFS K180 (68 Ma) of the Arabian Plate was also identified. Detailed palynofacies analysis, integrated with standard tropical/subtropical planktonic foraminifera, indicate warm Neo-Tethyan upper-bathyal to middle-shelf depositional environments for the Gurpi Formation.
Neoproterozoic microbialites in outcrops of the Qarn Alam salt dome, central Oman
Authors: Mettraux Monique , Homewood Peter , Al Balushi Said , Erthal Marcelle Marques , Matsuda Nilo Siguehiko 
Published: October 2021

ABSTRACT
Limestones and mixed limestone and dolomite facies from the Neoproterozoic to early Cambrian Ara Group are exposed as blocks and rafts by the surface-piercing Qarn Alam salt dome in central Oman. These limestones and dolomites compose laminite-stromatolite-thrombolite-evaporite shallowing-up successions, and are remarkable in that they contain well-preserved microbial textures and fossils (both calcite and dolomite with very small but significant silicates and other mineral species) as well as pristine syn-depositional to very early diagenetic cements from the first stages of sediment lithification.
The facies are described at scales ranging from outcrop (1–100 m) to the SEM (μm-scale). Outcrop-scale sedimentology and high-resolution stratigraphy are described in detail, and petrographic and geochemical analyses are recorded. The depositional environment is interpreted to have been shallow marine subtidal to intertidal and hypersaline supratidal, with low-energy tidal flats and channels, lagoons or salinas, and continental sabkhas.
Both calcitic and dolomitic phases show microbial fossils and structures with fabrics of mineralised extra-cellular polymeric substances (EPS). The occurrence of syn-sedimentary primary dolomitic matrix in thrombolites is interpreted to result from the degradation of a thicker microbial mat, during or after growth, which provided the right micro-environmental conditions for the precipitation of dolomite. A caliche crust and sabkha evaporites (the white band) cap the laminite-thrombolite succession and together with karst breccias, fracture fills and neptunian dykes, record an emersion at the top of each of the depositional units.
Stable isotopes of carbon and oxygen of the microbialite to evaporite facies show close values for δ13C (+2‰ to +4‰) but a broader range of δ18O (+0.5‰ to -5‰). These values, and their spread recorded within sets of laminae, indicate little to no diagenetic resetting and therefore should be close to original equilibrium values for seawater and early diagenetic fluids. Later diagenetic cements in fractures show entirely different values with δ13C in the range of -2‰ to -6‰, and δ18O from -7.5‰ to -11‰.
Whereas dolomite shows no post-depositional diagenetic modification and records preservation of finely detailed EPS mineralisation, the calcite of clumps of clots and mesoclots shows neomorphism with reorganisation into crudely fascicular-optic crystals that cut across primary sediment and early diagenetic cement fabrics.
Preservation of both sedimentary facies and the fossil record is remarkable for these ca. 540 million year old rocks and indicates that diagenesis had little effect on the microbialites at Qarn Alam.
Biovolume Method for Foraminiferal Biomass Assessment: Evaluation of Geometric Models and Incorporation of Species Mean Cell Occupancy
Authors: de Freitas Thaise Ricardo , Bacalhau Eduardo Tadeu , Disaró Sibelle Trevisan 
Published: October 2021

ABSTRACT
Foraminifers are widespread, highly abundant protists and active participants in marine carbon cycling. Their biomass might represent almost half of the total meiobenthic biomass in the deep sea. Foraminiferal biomass is frequently assessed through geometric models and biovolume estimates due to its non-destructive nature, which allows estimates of individuals from palaeoecological, museum, and living samples. To increase the accuracy of foraminiferal biovolume and biomass assessment we evaluate and propose geometric models for 207 foraminiferal taxa and the species’ average cell occupancy of the test. Individual test dimensions were measured to calculate volume (µm³), and the percent of cell occupancy (PCO) of the test was measured to assess the biovolume (µm³). These data were converted into individual biomass measurements (µg Corg ind−1). Our high intra- and interspecific PCO variance suggest that a mean PCO for each species represents the natural variability of occupancy more accurately than a predetermined fixed percentage for the whole assemblage, as previously asserted in the literature. Regression equations based on the relationship between test dimensions and volumes are presented. The geometric models, the PCO adjustment, and the equations will reduce time, effort, and discrepancies in foraminiferal biovolume and biomass assessments. Therefore, these results can improve the use and reliability of foraminiferal biomass in the future, facilitating its use in (1) distinct approaches including carbon flux estimations, (2) determining the effects of climate change on the marine trophic webs, and (3) environmental monitoring programs.
A Scientometric Study of Foraminiferal Research in Brazil
Authors: Lima Vieira Beatriz , Patrocínio Letícia Rizzetto , de Oliveira Lessa Douglas Villela , Gomes Doriedson Ferreira 
Published: October 2021

ABSTRACT
Scientometrics is a field of study that involves measuring and analyzing scientific literature and can be a valuable tool to assess and reveal major gaps in national scientific production. Among the major challenges for Brazilian science is the development of research in the extensive national marine realm. This paper provides a scientometric survey of papers involving foraminiferal research in Brazil. The metrics utilized were papers listed in “Capes Portal” and “Scopus” databases up to the year of 2019. A total of 324 papers were found and 177 were selected based upon criteria established. A generalized additive model (GAM) was used to establish a relationship between publications and time. Studies involving foraminifera increased in Brazil from 1952 to 2019. Most studies have been conducted in the southeast region. We identified the need for more research on foraminifera to be carried out in the Brazilian continental margin, especially in the north and northeast regions of the country.
Geochemistry and Isotope Composition of Paleoproterozoic Granites and Felsic Volcanics of the Elash Graben: Evidence of the Heterogeneity of the Early Precambrian Crust
Authors: Nozhkin A.D. , Turkina O.M. , Savko K.A. 
Published: October 2021

Abstract
—The paper presents results of a petrogeochemical and isotope–geochronological study of the granite–leucogranite association of the Pavlov massif and felsic volcanics from the Elash graben (Biryusa block, southwest of the Siberian craton). A characteristic feature of the granite–leucogranites is their spatial and temporal association with vein aplites and pegmatites of the East Sayan rare-metal province. The U–Pb age of zircon from granites of the Pavlov massif (1852 ± 5 Ma) is close to the age of the pegmatites of the Vishnyakovskoe rare-metal deposit (1838 ± 3 Ma). The predominant biotite porphyritic granites and leucogranites of the Pavlov massif show variable alkali ratios (K2O/Na2O = 1.1–2.3) and ferroan (Fe*) index and a peraluminous composition; they are comparable with S-granites. The studied rhyolites of the Tagul River (SiO2 = 71–76%) show a low ferroan index, a high K2O/Na2O ratio (1.6–4.0), low (La/Yb)n values (4.3–10.5), and a clear Eu minimum (Eu/Eu* = 0.3–0.5); they are similar to highly fractionated I-granites. All coeval late Paleoproterozoic (1.88–1.85 Ga) granites and felsic volcanics of the Elash graben have distinct differences in composition, especially in the ferroan index and HREE contents, owing to variations in the source composition and melting conditions during their formation at postcollisions extension. The wide range of the isotope parameters of granites and felsic volcanic rocks (εNd from +2.0 to –3.7) and zircons (εHf from +3.0 to +0.8, granites of the Toporok massif) indicates the heterogeneity of the crustal basement of the Elash graben, which formed both in the Archean and in the Paleoproterozoic.
Technology Focus: Oilfield Chemistry (September 2021)
Authors: Wylde Jonathan 
Published: October 2021

As production chemists, we are all aware of the overall concepts of improved oil recovery (IOR) and enhanced oil recovery (EOR). Perhaps, though, fewer of us are aware of the different idiosyncrasies that exist within (and even between) these two broad categories of recovery and then how chemistry and chemicals can have an effect upon these processes.
I would like to propose that the lines once were quite distinct between IOR and EOR: IOR was a standard waterflood operation, and EOR (from a chemist’s perspective) was the addition of chemistry to that waterflood (typically polymer or surfactant). Nowadays, the science has evolved massively to create many sub-genres of IOR and EOR. A waterflood is rarely just a waterflood anymore. We can alternate water and gas injection. We can add chemical conformance aids to direct better the flow of water. We can change the salinity of the water to promote better wettability for higher recovery factors. The list goes on. One just has to search out the number of EOR papers vs. (pretty much) every other discipline of production chemistry to see the commitment this industry still has to the research of this discipline. In recent years, the focus has tended to move away from deep-reservoir EOR to focus on near-wellbore stimulation. Interestingly, the mechanistic considerations that we make as production chemists are nearly identical in all cases, and significant synergies exist between these subdisciplines.
Therefore, from the recent research published by SPE, two focused topics of IOR/EOR have arisen: the use of nanoparticles and the use of water-shutoff technologies. Nanoparticle use is gaining significant traction in the oil and gas industry, and field applications are now being reported. The area of IOR/EOR is no exception. Water shutoff is not a new technology area. However, are these established, production-sustaining IOR techniques seeing a resurgence caused by the headwinds our industry has faced during the COVID-19 pandemic?
Recommended additional reading at OnePetro: www.onepetro.org.
OTC 30123 - Thermal and Rheological Investigations on N,N’-Methylenebis Acrylamide Cross-Linked Polyacrylamide Nanocomposite Hydrogels for Water-Shutoff Applications by Mohan Raj Keishnan, Alfiasal University, et al.
IPTC 20210 - Chemical and Mechanical Water Shutoff in Horizontal Passive ICD Wells: Experience and Lessons Learned in Giant Darcy Reservoir by Mohamed Abdel-Basset, Schlumberger, et al.
SPE 203831 - Efficient Preparation of Nanostarch Particles and Mechanism of Enhanced Oil Recovery in Low-Permeability Oil Reservoirs by Lei Zhang, China University of Geosciences, et al.
Low Complexity, Pairwise Layered Tabu Search for Large Scale MIMO Detection
Authors: CHAKRABORTY SOURAV , Sinha Nirmalendu Bikas , Mitra Monojit 
Published: October 2021

Abstract
This paper presents a low complexity pairwise layered tabu search (PLTS) based detection algorithm for a large-scale multiple-input multiple-output (MIMO) system. The proposed algorithm can compute two layers simultaneously and reduce the effective number of tabu searches. A metric update strategy is developed to reuse the computations from past visited layers. Also, a precomputation technique is adapted to reduce the redundancy in computation within tabu search iterations. Complexity analysis shows that the upper bound of initialization complexity in the proposed algorithm reduces from O(Nt4) to O(Nt3). The detection performance of the proposed detector is almost the same as the conventional complex version of LTS for 64QAM and 16QAM modulations. However, the proposed detector outperforms the conventional system for 4QAM modulation, especially in 16x16 and 8x8 MIMO. Simulation results show that the per cent of complexity reduction in the proposed method is approximately 75% for 64x64, 64QAM and 85% for 64x64 16QAM systems to achieve a BER of 10-3. Moreover, we have proposed a layer-dependent iteration number that can further reduce the upper bound of complexity with minor degradation in detection performance.
A Mixed-methods Approach to Understanding the Perspectives, Experiences and Attitudes of Cognitive Behavioral Therapy for African American Patients with Type-2 Diabetes: A Randomized Parallel Design Pilot Study
Authors: Cornely Ronald M. , Subramanya Vinita , Owen Ashley , McGee Robin E. , Kulshreshtha Ambar 
Published: October 2021

Abstract
BackgroundAfrican American (AA) adults are 60% more likely to be diagnosed with diabetes mellitus (DM) and experience more complications than non-Hispanic White adults. Cognitive behavioral therapy (CBT) is a technique that combines traditional care with cognitive and psychosocial techniques. We aimed to assess the effects of CBT integrated with motivational interviewing (MI) on glycemic control in AA participants and understand their perspectives, attitudes, and experiences toward CBT. MethodsUsing a randomized, parallel design pilot study (web-based group vs in-person group), 20 participants aged >18 years, identifying as AA, and having a glycosylated hemoglobin (HbA1c) > 8%, were recruited. CBT was administered in six sessions over three months. Participants completed baseline and follow-up assessments on measures for diabetes control (HbA1c), self-efficacy, generalized anxiety, depression, perceived stress, health-related quality of life and cognitive ability. Post-CBT focus groups were conducted to determine patient perspectives regarding the intervention. ResultsFourteen participants completed the study, their mean HbA1c improved from 8.5% to 7.7%. The Diabetes Distress Scale demonstrated decreased distress overall (t(26)=2.6; p- value=0.02). The Generalized Anxiety Disorder Scale demonstrated decreased generalized anxiety for all participants (t(26)=2.2; p =0.04). Themes identified in focus groups included: (1) intervention group social support through information sharing; (2) mental health and personal identities in diabetes understanding and management; (3) receptivity to CBT/MI Intervention positively impacts self-efficacy through improved health literacy. ConclusionGroup-based CBT intervention for type 2 DM care was positively received by AA participants and helped improve diabetes control, as demonstrated by the change in HbA1c. There were additional benefits of social support through group interactions and a stronger sense of self-efficacy due to health education. A comprehensive treatment plan like CBT, may be useful in promoting healthy diabetes self-management.Trial registrationThis trial is registered at ClinicalTrials.gov with the identifier NCT03562767. 70 Registered 19 June 2018, https://clinicaltrials.gov/ct2/show/NCT03562767?term=NCT03562767&draw=2&rank=1
Factor Structure and Measurement Invariance Between Fathers and Mothers and Across Three Time Points After Childbirth: Identification of Core Items of The Japanese Version of The Mother-To-Infant Bonding Scale
Authors: Baba Kaori , Kataoka Yaeko , Kitamura Toshinori 
Published: October 2021

Abstract
Background
The Japanese version of the mother-to-infant bonding scale (MIBS-J), a self-report of postnatal bonding disorder, is widely used in Japan. However, its psychometric properties, particularly measurement invariance, have rarely been reported, and the appropriateness of the use of the MIBS-J among perinatal fathers remains to be investigated. This study aimed to select and to validate MIBS-J items suitable for mothers and fathers at three time points (postpartum hospitalization period and 1 and 4 months postpartum) commonly used in clinical practice in Japan.
Methods
Postpartum mothers (n = 543) and fathers (n = 350) were surveyed at 5 days, 1 month, and 4 months postpartum. All participants were randomly divided into two subgroups, one for exploratory factor analyses (EFAs) and another for confirmatory factor analyses. Measurement invariance of the best model was tested using the entire sample, between fathers and mothers, and across the three observation periods.
Results
A three-item structure (items 1, 6, and 8) extracted through EFAs showed acceptable configural invariance. This model was accepted for scalar invariance between fathers and mothers and for metric invariance across the three time points.
Conclusions
This study showed that the three-item MIBS-J could be used reliably among Japanese parents in the first four postpartum months. Currently, all 10 MIBS-J items are used in clinical and research settings at various time points during the perinatal period. Our findings suggest that the MIBS-J with only three items is sufficient for diagnosis of postnatal bonding disorder, at least during the first four postpartum months.
Ethnic background and risk of SARS-CoV-2 infection among the healthcare workforces: Results of a large occupational cohort study in rural United Kingdom.
Authors: Inghels Maxime , Kane Ros , Lall Priya , Nelson David , Asghar Zahid , McCranor Tracy , Kavanagh Tony , Phull Jaspreet , Ward Derek , Tanser Frank 
Published: October 2021

Abstract
Black and South Asian healthcare workers have been found at higher risk of SARS-CoV-2 infection in the United Kingdom. However, many studies do not consider all potential confounders (e.g., professional exposure, living environment) and those conducted during the second wave of the COVID-19 outbreak remain scarce. Using 1-year-folow-up data from a cohort of 13,366 healthcare workers employed in 119 facilities in Lincolnshire, we aimed to quantify the risk of SARS-CoV-2 infection among ethnic minority healthcare staff and to elucidate pathways of infection. Overall, 1258 individuals (9.4%) recorded a positive SARS-CoV-2 test during the observation period, incidence per person-year was 5.2% [Cluster adjusted 95% CI: 3.6–7.6%] during the first COVID-19 wave (Jan-Aug 2020) and 17.2% [13.5–22.0%] during the second wave (Sep 2020-Feb 2021). Compared to Whites, Black and South Asian employees were at higher risk of SARS-CoV-2 infection during both the first wave (Clustered adjusted Hazard Ratio, 1.58 [0.91-2.75] and 1.69 [1.07-2.66] respectively) and the second wave (HR 2.09 [1.57-2.76] and 1.46 [1.24-1.71]). Higher risk of SARS-CoV-2 infection significantly persisted even after controlling on age, gender, pay grade, residence environment, type of work and time exposure at work. Higher adjusted risk of SARS-CoV-2 infection were also found among lower-paid health professionals. Black and South Asian health workers continue to be more exposed to SARS-CoV-2 infection compared to their white counterparts. Urgent interventions are required to reduce SARS-CoV-2 exposure with these ethnic groups.
Evolutionarily Conserved Core Rhizosphere Microbiota Promotes Host Performance and Fitness in Heavy Metal Accumulating Plants
Authors: Luo Jipeng , Gu Shaohua , Guo Xinyu , Liu Yuankun , Tao Qi , Zhao Heping , Liang Yongchao , Banerjee Samiran , Li Tingqiang 
Published: October 2021

Abstract
Background: Persistent microbial symbioses offer the potential to confer greater fitness to the host under unfavorable conditions, but manipulation of such beneficial interactions requires a mechanistic understanding of the consistently important microbiome members for the plant. Here, use five phylogenetically divergent heavy metal (HM) accumulating plants as a model, we examined the composition, assembly and relationships of the core and active rhizosphere microbiota across diverse soils with varying concentrations of HMs and further explored their roles in host performance.Results: Our results showed that the rhizosphere bacterial communities were primarily determined by soil type, with plant species having a stronger influence on the microbial diversity and composition than rhizocompartment and soil pollution level. We found that different HM accumulating plants harbored a unique set of core taxa in the rhizosphere with Sphingomonas and Burkholderiaceae shared among them. Use of RNA-SIP further revealed that the core rhizosphere taxa phylogenetically overlapped with the active rhizobacteria feeding on carbon-rich rhizodeposits, suggesting that the specific root exudate components driving the core microbiomes may be common across different plant species. Several keystone taxa were part of the core microbiota and facilitated plant metal tolerance and accumulation when inoculated with SynCom comprising the core cohorts.Conclusions: Our results suggest that a conserved core root microbiota has evolved with HM accumulating plants via root metabolic cues and exhibited potential to increase plant fitness and phytoextraction of HM. This study has important implications for harnessing the persistent microbiome members to improve host performance and accelerate the plant-assisted restoration of contaminated soil ecosystems.
Relationship of Cytochrome P450 Gene Polymorphisms With Blood Concentration of Hydroxychloroquine and Its Metabolites and Adverse Drug Reactions
Authors: Gao Beibei , Tan Tingfei , Cao Xi , Pan Menglu , Yang Chunlan , Wang Jianxiong , Shuai Zongwen , Xia Quan 
Published: October 2021

Abstract
Background: Hydroxychloroquine (HCQ) is a cornerstone therapy for systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA). This study aimed to investigate the relationship of cytochrome P450 (CYP450) gene polymorphisms with blood concentration of HCQ and its metabolites and adverse drug reactions (ADRs) in patients with SLE and RA. Methods: A cohort of 146 patients with SLE and RA treated with HCQ was reviewed. The ADRs of patients were recorded. The blood concentration of HCQ and its metabolites were measured by liquid chromatography–mass spectrometry analysis. Genotyping of single nucleotide polymorphism (SNP) in CYP450 metabolic enzyme involved in HCQ metabolic pathway was performed using a MassARRAY system. Chi-square test, T-test, and one-way analysis of variance were used to analyze data. Results: Among 29 candidate SNPs, we found that CYP3A4 (rs3735451) was significantly associated with blood levels of HCQ and its metabolites in unadjusted model and adjusted model (patients taking HCQ for >10 years) (P<0.05). For CYP3A5 (rs776746), skin and mucous membrane ADRs associated with the TT genotype were a greater risk than for the CT+CC genotypes (P=0.033). For CYP2C8 (rs1058932), abnormal renal function with the AG genotype carried a greater risk than with the AA+GG genotype (P=0.017); for rs10882526, ophthalmic ADRs of the GG genotype carried a greater risk than for the AA+AG genotypes (P=0.026). Conclusions: The CYP2C8 (rs1058932 and rs10882526) and CYP3A5 (rs776746) polymorphisms are likely involved in the ADRs of HCQ. Gene polymorphism analysis of CYP450 and therapeutic drug monitoring of HCQ and its metabolites might be useful to optimize HCQ administration and predict ADRs.