bluuebunny/crossref_metadata_2025_split huggingface dataset:
Incipient Weathering of the ~74ka Young Toba Tuff (YTT) Biotite Grains, Sagileru Valley, Andhra Pradesh
Authors: Krishnan Geethanjali , Achyuthan Hema 
Published: December 2019

ABSTRACT
The Young Toba Tuff (YTT) ash containing biotite flakes was once spread over the Indian peninsula, and is now exposed at several sites in the Sagileru river basin in Andhra Pradesh. The ash beds form a distinct marker horizon in the landscape and have been recognized in a variety of sedimentary sequences associated with middle Paleolithic archaeological tools. In the present study, biotite grains from the volcanic ash beds were separated that were collected from Vankamarri (VKM), Porumamilla (PRM) and Jammulamadugu (JMD), sites in the Sagileru river valley, Cuddapah, Andhra Pradesh. The biotite grains were separated to understand the state and stage of weathering since the ash deposition ~74ka. Electron microprobe data of the biotite grains exhibit low FeO/MgO values. The chemical discrimination diagrams characterizing the physicochemical properties of the biotite flakes from VKM, PRM and JMD sites indicate calc-alkaline composition and in the A–CN–K diagram, most of the samples fall above the plagioclase feldspar zone signifying low degree of alteration. Both the CIA and A-CN-K values depict the low weathering state of biotite, and this probably is owing to long periods of dry, semi-arid to arid climatic conditions since ~74ka. Scanning Electron microscope (SEM) of the biotite grains reveal micro and nanopores on the surface and many a times these coalesce to form curls along the edges of the biotite grains further supporting incipient but very early stage of biotite weathering since its deposition ~74ka.
Application of Principal Component Analysis and Correlation for Assessing Groundwater Contamination in and around Municipal Solid Waste Landfill of Ghazipur, Delhi
Authors: Kumari Priyanka , Gupta N.C. , Kaur Amarjeet , Singh Khem 
Published: December 2019

ABSTRACT
The present study has been executed to assess the groundwater quality and to investigate the possible sources of contamination in the adjoining areas of Ghazipur landfill site, Delhi. The groundwater samples were collected during pre and post monsoon seasons and various physico-chemical and heavy metals concentration were also analyzed. The results show that the samples which were taken adjacent to landfill site had a higher concentration of total dissolved solids (2383 mg/l), chloride (991mg/1), total hardness (659 mg/l), ammonical nitrogen (2.3mg/l), sodium (350 mg/l), calcium (534 mg/l) and sulphate (631 mg/l). Most of the heavy metals concentration in groundwater samples was found within the prescribed limit except Cu and Pb. The principal component analysis (PCA) extracted 3 factors which collectively explained 80.1% of the variation in data during post-monsoon whereas 75.4% of the variation in pre-monsoon season. The obtained results clearly show that K+, Mg2+, Na+, SO42-, and NO3- ions significantly contribute towards the high temporal pollution load to groundwater quality. Factor analysis also suggested that the continuous percolation of these contaminants from the nearby landfill could be the possible sources of contamination into groundwater aquifer system. The concentration of heavy metals in leachate have followed the order as- Fe&gt;Zn&gt;Cu&gt;Pb&gt;Ni&gt;Cr&gt;Cd. The overall result indicates that the landfill leachate is significantly affecting the nearby groundwater quality through continuous leaching over a long period of time. As the groundwater is used by some local residents for domestic purposes, immediate action and alternative effort should be made to supply clean water.
Studies on Uranium Hydrogeochemistry in Kamalavathi River Basin, Gulbarga and Yadgir Districts, Karnataka
Authors: Kouser Lubna , Raghavendra H.U. , Rao K.L. Narahari 
Published: December 2019

ABSTRACT
Uranium is a radioactive element and its presence in ground water, used for human consumption, forms a serious societal issue. The present study, deals with the occurrence and geochemistry of uranium in the aquifers underlying parts of Gulbarga and Yadigir districts of Karnataka State. The study area is confined to Kamalavathi river basin, where groundwater is the major source for domestic use. High uranium (&gt;30 ppb) is found in the north eastern part of the study area. The present study deals with the geochemistry of uranium in ground water of Kamalavathi river basin. The data was subjected to statistical analysis to understand the inter relationship between various elements. The 2D and 3D maps of groundwater flow directions and uranium concentrations were used to understand the variation of uranium concentration along the groundwater flow. Detailed uranium geochemistry and Eh-pH diagrams were used to understand the lithological controls on occurrence of uranium in groundwater.
Groundwater Quality Appraisal and its Hydrogeochemical Characterization — Mathura City, Western Uttar Pradesh
Authors: Ahmad Shamshaad , Umar Rashid , Arshad Ilma 
Published: December 2019

ABSTRACT
In order to understand the hydrogeochemistry of Mathura city, western Uttar Pradesh a total of 92, 34 and 22 groundwater samples were collected from shallow, intermediate and deep wells during post-monsoon 2017 and pre-monsoon 2018 respectively and analyzed for major cations and anions. The groundwater of the study area is found to be alkaline in nature and is categorized as hard to very hard water type. Dominant facies deciphered from Piper’s trilinear diagram of shallow, intermediate wells are Na-K-Cl-SO4 and Ca-Mg-Cl-SO4 while deep well samples are Ca-Mg-Cl-SO4 type facies in post-monsoon 2017. During pre-monsoon 2018, the ionic facies for shallow, intermediate and deep well samples is Na-K-Cl-SO4 type with the exception of 7 samples of shallow well which shows Ca-Mg-Cl-SO4 type facies. Based on the water quality index (WQI) classification, majority of samples of shallow, intermediate and deep well fall in poor water category in both seasons. According to pollution index of groundwater (PIG) classification, majority of samples of all three depths showed low to moderate pollution in both the seasons. Saturation indices of minerals was also calculated by employing geochemical program PHREEQC. Groundwater at shallow depth possesses excess concentration of Ca, Na, K, and SO4, followed by inter-mediate and deeper depth samples of both seasons. Trace elements like As, Mo, Sr, and Zn show higher concentration in shallow depth samples followed by intermediate and deeper depth samples, except As which shows a reverse trend. This demonstrates that the groundwater from shallow wells is definitely more vulnerable to contamination. The study has revealed poor groundwater quality of Mathura city and noticeable influence of urbanization and industrialization on water quality.
Navigating Tensions About Resident Sexual Expression in Alberta’s Continuing Care Homes: a Qualitative Study of Leaders’ Experiences
Authors: Howard Lisa , Brassolotto Julia , Manduca-Barone Alessandro 
Published: December 2019

Abstract
Introduction
In continuing care homes, resident sexual expression is complicated by interpersonal, physical, and social features that are part of congregate living. Little is known about how managers navigate the complexities of these features.

Methods
We undertook a descriptive, exploratory study to pursue this line of inquiry. We conducted in-depth interviews with 28 participants from a network of managers, clinical ethicists, geriatric specialists, and social workers in Alberta, Canada.

Results
We present our findings as three dynamic tensions: 1) the tension between how sexual expression should be supported and how it is addressed in care homes; 2) the tension between private and public space in the care home; and 3) the tension between a medical model of care and a conceptualization of sexual expression as an activity of daily living.

Conclusions
These tensions are connected with sexual rights – specifically, with the rights to equality and non-discrimination, privacy, and autonomy and bodily integrity. Sexual expression can also have physical, social, and emotional benefits for continuing care residents. Thus, the tensions surrounding resident sexual expression ought to be navigated with an approach that acknowledges sexual rights and best upholds them.

Policy Implications
We suggest that in order to realize the benefits and prevent the harms associated with resident sexual expression, there is both need and opportunity for a coordinated, multi-level approach.
Investigation of trapezoidal sharp-crested side weir discharge coefficients under subcritical flow regimes using CFD
Authors: Ghaderi Amir , Dasineh Mehdi , Abbasi Saeed , Abraham John 
Published: December 2019

AbstractSide weirs are utilized to regulate water surface and to control discharge and water elevation in rivers and channels. Here, the discharge coefficient for trapezoidal sharp-crested side weirs (TSCSW) and their affecting parameters are numerically investigated. To simulate the hydraulic and geometric characteristics of TSCSWs, three weir crest lengths of 15 cm, 20 cm and 30 cm with lengths of 20 cm, 30 cm and 40 cm and with two different sidewall slopes are utilized. The results show that for constant P/B (P: weir height, B: main channel width), the depth of flow along the channel and weir decreases as the crest length increases. Also, with increasing P/y1 ratio (P: weir height, y1: upstream flow depth), the discharge coefficient decreases for small crest lengths and increases for large crest lengths. The results show that for constant T/L ratio (T: passing flow width, L: side weir crest length), increasing the length, height and sidewall slope of a side weir will increase the discharge coefficient. It is observed that as the upstream Froude number increases for side weirs with longer crest lengths, the intensity of deviating flow and kinetic energy over the TSCSW will increase. Finally, some relations with high correlation factors are proposed for obtaining discharge coefficients using the dimensionless parameters of P/y1, T/L and Fr1. Based on proposed relations and sensitivity analysis, it is shown that T/L and P/y1 are the most effective parameters for reducing the discharge coefficient reduction.
Petrophysical interpretation in shaly sand formation of a gas field in Tanzania
Authors: Mkinga Oras Joseph , Skogen Erik , Kleppe Jon 
Published: December 2019

AbstractAn onshore gas field (hereafter called theRfield—real name not revealed) is in the southeast coast of Tanzania which includes a Tertiary aged shaly sand formation (sand–shale sequences). The formation was penetrated by an exploration wellR–Xwherein no core was acquired, and there is no layer-wise published data of the petrophysical properties of theRfield in the existing literature, which are essential to reserves estimation and production forecast. In this paper, the layer-wise interpretation of petrophysical properties was undertaken by using wireline logs to obtain parameters to build a reservoir simulation model. The properties extracted include shale volume, total and effective porosities, sand fractions and sand porosity, and water saturation. Shale volume was computed using Clavier equation from gamma ray. Density method was used to calculate total and effective porosities. Thomas–Stieber method was used to determine sand porosity and sand fraction, and water saturation was computed using Poupon–Leveaux model. The statistics of the parameters extracted are presented, where shale volume obtained that varies with zones is between 6 and 54% volume fraction, with both shale laminations and dispersed shale were identified. Total porosity obtained is in a range from 12 to 22%. Sand porosity varies between 15 and 25%, and sand fraction varies between 33 and 93% height fraction. Average water saturation obtained is between 32 and 49% volume fraction.
Measured as the water flows: the striated and smooth in marine spatial planning
Authors: Jay Stephen 
Published: December 2019

AbstractMarine spatial planning (MSP) now has a sufficient history for consideration of the way in which MSP processes are developing over time, gaining experience and responding to issues that arise. Rather than setting a study of this kind in the well-established framework of adaptive management, I choose instead a spatial concept that allows planning action to be more closely meshed with the nature of the marine setting itself, that of Deleuze and Guatarri’s notion of striated and smooth spaces. This suggests that there are two different manners in which space is produced, which are interdependent and interchanging and work together in making progress; this has certain resonances with the materiality of the sea. I use this concept in a reading of an MSP process with a relatively long pedigree, that of the Shetland Islands, Scotland, UK, focusing particularly on the development of aquaculture policy, through analysis of a sequence of documents. The study reveals that policy-making is suffused with striated and smooth spatialities, finding expression on the one hand in development criteria and other regulations, and on the other hand, in discretion, negotiation and opportunity-building, with the two yielding to each other and advancing together with their different types of movement. This suggests a more general manner by which MSP processes may progress, by spatial dialectic of this kind, in which those who practice MSP engage through their own reasoning of the natural and human structures and dynamisms of the coasts and seas and their responsive plan-making.
Explaining the competitive advantage generated from Analytics with the knowledge-based view: the example of Logistics and Supply Chain Management
Authors: Herden Tino T. 
Published: December 2019

AbstractThe purpose of this paper is to provide a theory-based explanation for the generation of competitive advantage from Analytics and to examine this explanation with evidence from confirmatory case studies. A theoretical argumentation for achieving sustainable competitive advantage from knowledge unfolding in the knowledge-based view forms the foundation for this explanation. Literature about the process of Analytics initiatives, surrounding factors, and conditions, and benefits from Analytics are mapped onto the knowledge-based view to derive propositions. Eight confirmatory case studies of organizations mature in Analytics were collected, focused on Logistics and Supply Chain Management. A theoretical framework explaining the creation of competitive advantage from Analytics is derived and presented with an extensive description and rationale. This highlights various aspects outside of the analytical methods contributing to impactful and successful Analytics initiatives. Thereby, the relevance of a problem focus and iterative solving of the problem, especially with incorporation of user feedback, is justified and compared to other approaches. Regarding expertise, the advantage of cross-functional teams over data scientist centric initiatives is discussed, as well as modes and reasons of incorporating external expertise. Regarding the deployment of Analytics solutions, the importance of consumability, users assuming responsibility of incorporating solutions into their processes, and an innovation promoting culture (as opposed to a data-driven culture) are described and rationalized. Further, this study presents a practical manifestation of the knowledge-based view.
Theoretical description of drawing body shape in an inclined seam with longwall top coal caving mining
Authors: Wang Jiachen , Wei Weijie , Zhang Jinwang 
Published: December 2019

AbstractUnderstanding the characteristics of drawing body shape is essential for optimization of drawing parameters in longwall top coal caving mining. In this study, both physical experiments and theoretical analysis are employed to investigate these characteristics and derive a theoretical equation for the drawing body shape along the working face in an inclined seam. By analyzing the initial positions of drawn marked particles, the characteristics of the drawing body shape for different seam dip angles are obtained. It is shown that the drawing body of the top coal exhibits a shape-difference and volume-symmetry characteristic, on taking a vertical line through the center of support opening as the axis of symmetry, the shapes of the drawing body on the two sides of this axis are clearly different, but their volumes are equal. By establishing theoretical models of the drawing body in the initial drawing stage and the normal drawing stage, a theoretical equation for the drawing body in an inclined seam is proposed, which can accurately describe the characteristics of the drawing body shape. The shape characteristics and volume symmetry of the drawing body are further analyzed by comparing the results of theoretical calculations and numerical simulations. It is shown that one side of the drawing body is divided into two parts by an inflection point, with the lower part being a variation development area. This variation development area increases gradually with increasing seam dip angle, resulting in an asymmetry of the drawing body shape. However, the volume symmetry coefficient fluctuates around 1 for all values of the seam dip angle variation, and the volumes of the drawing body on the two sides are more or less equal as the variation development volume is more or less equal to the cut volume. Both theoretical calculations and numerical simulations confirm that the drawing body of the top coal exhibits the shape-difference and volume-symmetry characteristic.
Popular peer norms and adolescent sexting behavior
Authors: Maheux Anne J. , Evans Reina , Widman Laura , Nesi Jacqueline , Prinstein Mitchell J. , Choukas‐Bradley Sophia 
Published: December 2019

ABSTRACTIntroductionAdolescents misperceive and are heavily influenced by the behavior of their popular peers, yet research has not yet investigated this phenomenon for a relatively new and potentially risky behavior: adolescent sexting. The present study investigates rates of sexting among popular and non‐popular adolescents and the association between adolescents' perceptions of popular peers’ sexting behavior and their own sexting behavior.MethodsA school‐based sample of 626 adolescents from a rural high school in the Southeastern U.S. (Mage = 17.4, 53.5% female) completed surveys indicating whether they had sent a sext in the past year. Participants also reported on perceptions of popular peers’ sexting behavior and completed sociometric nominations of peer status.ResultsWhile 87.4% of adolescents believed the typical popular boy or girl in their class had sent a sext in the past year, only 62.5% of popular adolescents had actually sent a sext. There was no significant difference between rates of sexting among popular and non‐popular (54.8%) adolescents. After adjusting for gender and sexual activity status, adolescents who believed that the typical popular peer sent a sext were over ten times more likely to have also sexted in the past year. Among adolescents who believed their popular peers had not sexted, girls were more likely than boys to have sexted themselves; however, this gender difference disappeared among adolescents who believed their popular peers had sexted.ConclusionsThese results underscore the importance of peer status and perceptions of peer norms in adolescents’ sexting.
Recurrent glomangioma (“true” glomus tumor) of the middle ear and mastoid
Authors: Kaufman Adam C. , Brant Jason A. , Luu Neil N. , LiVolsi Virginia A. , Bigelow Douglas C. 
Published: December 2019

ObjectiveTo review current literature and experience with glomangiomas, or true glomus tumors of the middle ear and mastoid as well asto report on the exceptionally rare case of a glomangiomastemming from the middle ear space with multiple recurrences.MethodsReview of existing world literature and description of personal experience with rare cases of a glomangioma of the middle ear and mastoid.ResultsReview of existing literature revealed two cases of patients presenting with tinnitus and hearing loss refractory to medical management. Both patients were ultimately diagnosed with glomangioma on histopathology. Complete surgical excision is thought to be curative.PatientA 36‐year‐old woman presented with a rare case of a glomangioma of the middle ear presenting with unilateral hearing loss. She was noted to have a mass behind the tympanic membrane. Imaging revealed a diffuse mass filling the mastoid air cells. Imaging characteristics and histology were consistent with a glomangioma.InterventionInitial resection via mastoidectomy using a postauricular approach. The tympanic membrane was reconstructed with temporalis tissue. Follow‐up revision tympanomastoidectomy was performed upon recurrence of disease. The chorda tympani were sacrificed due to tumor involvement. The incus and head of the malleus were removed to gain better access to the tumor. The ossicular chain was reconstructed with a Goldenberg Total Ossicular Prosthesis.Main outcome measureRecurrence of disease.Follow‐upIn the 67 months since her most recent surgery, there has been no evidence of recurrence by CT or physical exam.ConclusionGlomangioma of the middle ear represents an exceptionally rare entity that can present in a similar fashion to a paraganglioma.
Disclosure for real humans
Authors: PAGE LIONEL 
Published: December 2019

AbstractModern consumers typically face complex goods and services. In the interest of customer protection, these companies are asked to disclose information about the products and consumers are typically required to indicate their understanding of the information provided. In truth, consumers seldom consult, even less understand the information provided. I present here the state of evidence about how commercial disclosure actually works (or rather does not work) with consumers characterized with human limitations in information processing. I discuss ways to improve disclosure regulation to improve customer protection.
Clusters of nontuberculous mycobacteria linked to water sources at three Veterans Affairs medical centers
Authors: Oda Gina , Winters Mark A. , Pacheco Susan M. , Sikka Monica K. , Bleasdale Susan C. , Dunn Bruce , Boswell Erin , Winters Benjamin , Bumsted Amelia , Frisch Jennifer , Holodniy Mark 
Published: December 2019

AbstractObjective:To characterize nontuberculous mycobacteria (NTM) associated with case clusters at 3 medical facilities.Design:Retrospective cohort study using molecular typing of patient and water isolates.Setting:Veterans Affairs Medical Centers (VAMCs).Methods:Isolation and identification of NTM from clinical and water samples using culture, MALDI-TOF, and gene population sequencing to determine species and genetic relatedness. Clinical data were abstracted from electronic health records.Results:An identical strain of Mycobacterium conceptionense was isolated from 41 patients at VA Medical Centers (VAMCs A, B, and D), and from VAMC A’s ICU ice machine. Isolates were initially identified as other NTM species within the M. fortuitum clade. Sequencing analyses revealed that they were identical M. conceptionense strains. Overall, 7 patients (17%) met the criteria for pulmonary or nonpulmonary infection with NTM, and 13 of 41 (32%) were treated with effective antimicrobials regardless of infection or colonization status. Separately, a M. mucogenicum patient strain from VAMC A matched a strain isolated from a VAMC B ICU ice machine. VAMC C, in a different state, had a 4-patient cluster with Mycobacterium porcinum. Strains were identical to those isolated from sink-water samples at this facility.Conclusion:NTM from hospital water systems are found in hospitalized patients, often during workup for other infections, making attribution of NTM infection problematic. Variable NTM identification methods and changing taxonomy create challenges for epidemiologic investigation and linkage to environmental sources.