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https://www.readbyqxmd.com/read/28105717/beyond-food-the-multiple-pathways-for-inclusion-of-materials-into-ancient-dental-calculus
#1
Anita Radini, Efthymia Nikita, Stephen Buckley, Les Copeland, Karen Hardy
Dental calculus (mineralized dental plaque) was first recognised as a potentially useful archaeological deposit in the 1970s, though interest in human dental calculus as a resource material has increased sharply in the past few years. The majority of recent research has focused on the retrieval of plant microfossils embedded in its matrix and interpretation of these finds as largely the result of deliberate consumption of plant-derived food. However, while most of the material described in published works does represent food, dental calculus is in fact a "depositional environment" as material can enter the mouth from a range of sources...
January 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28098121/perspectives-on-hypertension-outcomes-after-single-stage-clearance-of-a-complete-staghorn-renal-calculus
#2
Ranjit Chaudhary, Kulwant Singh, Chirag S Dausage, Nidhi Jain
A 55-year-old male presented, in June 2013, with left flank pain. Investigations revealed a complete staghorn stone. He had undergone two sittings of extracorporeal shock wave lithotripsy (ESWL) in 2008 for left renal stone. One year subsequent to this, he was diagnosed with hypertension and diabetes. The management of complete staghorn stones in a single sitting is a difficult proposition. Percutaneous nephrolithotomy (PCNL) is the gold standard to manage such stones. The patient was subjected to PCNL, and complete clearance was achieved in one sitting...
January 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28096928/spontaneous-uretero-sigmoid-fistula-secondary-to-calculus
#3
Ines Marzouk, Makram Moussa, Lotfi Saadallah, Sami Bouchoucha, Lotfi Hendaoui
A 25-year-old man was referred to the urology department after a subacute history of left back pain, burning micturition associated with pneumaturia and fecaluria. Ultrasonography was performed showing hydronephrosis, and plain film radiography demonstrated a long vertical left pelvic calculi. Uro-computed tomography (CT) combined with a water enema CT showed a 10 cm long calculus with the cranial extremity fistulating the sigmoidal wall. Surgical treatment included left nephroureterectomy and sigmoidectomy with a colorectal anastomosis...
November 2016: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28093701/cancer-incidence-in-spain-2015
#4
J Galceran, A Ameijide, M Carulla, A Mateos, J R Quirós, D Rojas, A Alemán, A Torrella, M Chico, M Vicente, J M Díaz, N Larrañaga, R Marcos-Gragera, M J Sánchez, J Perucha, P Franch, C Navarro, E Ardanaz, J Bigorra, P Rodrigo, R Peris Bonet
PURPOSE: Periodic cancer incidence estimates of Spain from all existing population-based cancer registries at any given time are required. The objective of this study was to present the current situation of cancer incidence in Spain. METHODS: The Spanish Network of Cancer Registries (REDECAN) estimated the numbers of new cancer cases occurred in Spain in 2015 by applying the incidence-mortality ratios method. In the calculus, incidence data from population-based cancer registries and mortality data of all Spain were used...
January 16, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28092016/testing-event-based-forms-of-causality
#5
Alexander von Eye, Wolfgang Wiedermann
Three fundamental types of causal relations are those of necessity, sufficiency, and necessity and sufficiency. These types are defined in contexts of categorical variables or events. Using statement calculus or Boolean algebra, one can determine which patterns of events are in support of a particular form of causal relation. In this article, we approach the analysis of these forms of causality taking the perspective of the analyst of empirical data. It is proposed using Configural Frequency Analysis (CFA) to test hypotheses about type of causal relation...
January 14, 2017: Integrative Psychological & Behavioral Science
https://www.readbyqxmd.com/read/28079491/the-problem-of-university-courses-on-infinitesimal-calculus-and-their-demarcation-from-infinitesimal-calculus-in-high-schools-erratum
#6
Otto Toeplitz
In the above mentioned article [1] unfortunately the names of the translators of Toeplitz's lecture were omitted. The correct title is: The Problem of University Courses on Infinitesimal Calculus and Their Demarcation from Infinitesimal Calculus in High Schools Otto Toeplitz Translated into English by Michael N. Fried and Hans Niels Jahnke.
December 2016: Science in Context
https://www.readbyqxmd.com/read/28077939/construction-of-scalar-and-vector-finite-element-families-on-polygonal-and-polyhedral-meshes
#7
Andrew Gillette, Alexander Rand, Chandrajit Bajaj
We combine theoretical results from polytope domain meshing, generalized barycentric coordinates, and finite element exterior calculus to construct scalar- and vector-valued basis functions for conforming finite element methods on generic convex polytope meshes in dimensions 2 and 3. Our construction recovers well-known bases for the lowest order Nédélec, Raviart-Thomas, and Brezzi-Douglas-Marini elements on simplicial meshes and generalizes the notion of Whitney forms to non-simplicial convex polygons and polyhedra...
October 2016: J Comput Methods Appl Math
https://www.readbyqxmd.com/read/28057994/a-completely-calcified-prostate
#8
Vinod Priyadarshi, Nidhi Sehgal
Prostatic calcification and prostatic calculus formation is commonly seen in adult population with chronic prostatitis, however, gross prostatic calcification which involves more than 3 cm(2) of the gland is quite rare. We are presenting here one such case in which almost whole glandular prostate was converted into stone which is never reported so far.
October 2016: Urology Annals
https://www.readbyqxmd.com/read/28057833/cognitive-skills-and-the-evolution-of-social-systems
#9
REVIEW
Russell D Fernald
How do animal social skills influence evolution? Complex animal social behaviors require many cognitive skills including individual recognition and observational learning. For social systems to evolve, these abilities need to be transmitted genetically or culturally and supported by the evolution of underlying neural systems. Because animal skill sets are so varied, it seems best to describe animal cognitive behaviors as being a social calculus that can change with experience, which has evolved to match and facilitate the complexity of the social system where it arose...
January 1, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28056942/the-guidewire-coil-technique-to-prevent-retrograde-stone-migration-of-ureteric-calculi-during-intracorporeal-lithothripsy
#10
Nici Markus Dreger, Friedrich Carl von Rundstedt, Stephan Roth, Alexander Sascha Brandt, Stephan Degener
BACKGROUND: Stone retropulsion represents a challenge for intracorporeal lithotripsy of ureteral calculi. The consequences are an increased duration and cost of surgery as well as decreased stone-free rates. The use of additional tools to prevent proximal stone migration entails further costs and risks for ureteral injuries. We present the simple technique of using a coil of the routinely used guidewire to prevent stone retropulsion. METHODS: We retrospectively evaluated all patients with mid-to-proximal ureteral stones in 2014, which were treated by ureteroscopic lithotripsy (Ho: YAG and/or pneumatic lithotripsy)...
January 5, 2017: BMC Urology
https://www.readbyqxmd.com/read/28053924/association-between-periodontal-condition-and-nutritional-status-of-brazilian-adolescents-a-population-based-study
#11
Alessandro L Cavalcanti, Ianny A Ramos, Andreia M R Cardoso, Liege Helena F Fernandes, Amanda S Aragão, Fábio G Santos, Yêska P C Aguiar, Danielle F Carvalho, Carla C M Medeiros, Renata De S C Soares, Ricardo D Castro
BACKGROUND: Obesity is a serious problem of public health and affects all socio-economic groups, irrespective of age, sex or ethnicity. The aim of this study was to evaluate the association between periodontal condition and nutritional status of adolescents. METHODS: This was a cross-sectional study using a probability cluster sampling, and the sample was defined by statistical criterion, consisting of 559 students aged 15-19 yr enrolled in public schools of adolescents of Campina Grande, PB, Brazil in 2012...
December 2016: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/28051233/giant-staghorn-common-bile-duct-calculus
#12
Mohamed Salah Jarrar, Mohamed Habib Ben Hadj Khalifa, Rafik Ghrissi, Imed Ben Mansour, Fehmi Hamila, Amine Elghali, Rached Letaief
Background - Stones in common bile duct are defined as 'large' if they are more than 15 mm in size. There are very few reports which describe a giant stone measuring 5 cm or more and exceptionally a staghorn calculus in the common bile duct. Purpose - The purpose is to report a new rare case of giant staghorn gallstone and discuss the diagnostic approach and therapeutic possibilities. Case report - We report a case of a giant staghorn common bile duct calculus in a 65-year-old patient. Its removal required 2 operations and an endoscopic retrograde cholangiopancreatography with endoscopic sphincterotomy...
July 2016: La Tunisie Médicale
https://www.readbyqxmd.com/read/28050502/antibacterial-effect-of-aloe-vera-gel-against-oral-pathogens-an-in-vitro-study
#13
Supreet Jain, Nirav Rathod, Ravleen Nagi, Jaideep Sur, Afshan Laheji, Naveen Gupta, Priyanka Agrawal, Swati Prasad
INTRODUCTION: Natural herbal remedies have shown promising anti-microbial property and fewer side effects compared to synthetic anti-microbial therapy. Aloe Vera is a medicinal plant used for management of various infections since ancient times as it has anti-inflammatory, anti-microbial, and immune-boosting properties. AIM: The aim of the present study was to determine the anti-microbial and inhibitory activities of various concentration of Aloe Vera Gel (AVG) against oral pathogenic bacteria...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28050499/oral-health-status-of-tibetan-and-local-school-children-a-comparative-study
#14
Vivek Sivakumar, Jithesh Jain, Reshmi Haridas, Shanavas Paliayal, Sheela Rodrigues, Merrin Jose
INTRODUCTION: India has seen a large influx of refugee populations throughout history and the Tibetan immigration is one among them. Understanding the health status and needs of immigrants is imperative because of their growing numbers and their input to the health of the nation. The oral health professionals face many challenges while confronting refugees and immigrants from cultures different from their own. Earlier studies have shown that children, especially refugees and immigrants have had a higher prevalence of unmet oral health needs...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28040303/evaluation-of-the-prevalence-of-residual-sialolith-fragments-after-transoral-approach-of-wharton-s-duct
#15
M Gerni, J M Foletti, C Collet, C Chossegros
Transoral submandibular duct sialolith removal is a simple technique with very few complications. Nevertheless, following this procedure, we have observed long-term calculus recurrence in a number of patients. We therefore elected to evaluate these cases. This was a monocentric prospective study performed between November 2013 and June 2014. All patients received surgery for submandibular gland lithiasis by intraoral removal of submandibular duct calculi. Between the day following the procedure and 3 months postsurgery, these patients systematically underwent an ultrasound examination of the submandibular gland...
April 15, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28039990/connecting-the-grain-shearing-mechanism-of-wave-propagation-in-marine-sediments-to-fractional-order-wave-equations
#16
Vikash Pandey, Sverre Holm
The characteristic time-dependent viscosity of the intergranular pore-fluid in Buckingham's grain-shearing (GS) model [Buckingham, J. Acoust. Soc. Am. 108, 2796-2815 (2000)] is identified as the property of rheopecty. The property corresponds to a rare type of a non-Newtonian fluid in rheology which has largely remained unexplored. The material impulse response function from the GS model is found to be similar to the power-law memory kernel which is inherent in the framework of fractional calculus. The compressional wave equation and the shear wave equation derived from the GS model are shown to take the form of the Kelvin-Voigt fractional-derivative wave equation and the fractional diffusion-wave equation, respectively...
December 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28031088/therapy-and-prevention-of-postoperative-urosepsis-of-ureter-endoscopic-lithotripsy-for-non-infection
#17
Jun Shen, Fa Sun, Fang-Min Chen, Zhi-Ping Wu, Sheng-Wen Li
Objective To analyze the risk factors causing postoperative urosepsis in ureter endoscopic lithotripsy without infection preoperatively, in order to make a more effective and safer preventive and therapeutic strategy.Methods From January 2010 to January 2015, 5 ureteral calculus patients undergoing ureter endoscopic lithotripsy with holmium laser were retrospectively enrolled in this clinical study. These patients suffered urosepsis postoperatively confirmed by the clinical presentations and laboratory Results, while they had no infection in their blood and urine preoperatively...
March 20, 2016: Chinese Medical Sciences Journal, Chung-kuo i Hsüeh K'o Hsüeh Tsa Chih
https://www.readbyqxmd.com/read/28026786/a-one-layer-recurrent-neural-network-for-constrained-complex-variable-convex-optimization
#18
Sitian Qin, Jiqiang Feng, Jiahui Song, Xingnan Wen, Chen Xu
In this paper, based on CR calculus and penalty method, a one-layer recurrent neural network is proposed for solving constrained complex-variable convex optimization. It is proved that for any initial point from a given domain, the state of the proposed neural network reaches the feasible region in finite time and converges to an optimal solution of the constrained complex-variable convex optimization finally. In contrast to existing neural networks for complex-variable convex optimization, the proposed neural network has a lower model complexity and better convergence...
December 22, 2016: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28012088/ultrasound-speckle-reduction-based-on-fractional-order-differentiation
#19
Dangguo Shao, Ting Zhou, Fan Liu, Sanli Yi, Yan Xiang, Lei Ma, Xin Xiong, Jianfeng He
PURPOSE: Ultrasound images show a granular pattern of noise known as speckle that diminishes their quality and results in difficulties in diagnosis. To preserve edges and features, this paper proposes a fractional differentiation-based image operator to reduce speckle in ultrasound. METHODS: An image de-noising model based on fractional partial differential equations with balance relation between k (gradient modulus threshold that controls the conduction) and v (the order of fractional differentiation) was constructed by the effective combination of fractional calculus theory and a partial differential equation, and the numerical algorithm of it was achieved using a fractional differential mask operator...
December 23, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28011418/compose-using-temporal-patterns-for-interpreting-wearable-sensor-data-with-computer-interpretable-guidelines
#20
V Urovi, O Jimenez-Del-Toro, F Dubosson, A Ruiz Torres, M I Schumacher
This paper describes a novel temporal logic-based framework for reasoning with continuous data collected from wearable sensors. The work is motivated by the Metabolic Syndrome, a cluster of conditions which are linked to obesity and unhealthy lifestyle. We assume that, by interpreting the physiological parameters of continuous monitoring, we can identify which patients have a higher risk of Metabolic Syndrome. We define temporal patterns for reasoning with continuous data and specify the coordination mechanisms for combining different sets of clinical guidelines that relate to this condition...
December 5, 2016: Computers in Biology and Medicine
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