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https://www.readbyqxmd.com/read/28227783/tooth-separation-from-dental-model-using-segmentation-field
#1
Hao Wang, Zhongyi Li, Hao Wang, Zhongyi Li, Zhongyi Li, Hao Wang
Tooth segmentation on dental model is an essential step of computer-aided-design systems for orthodontic virtual treatment planning. However, efficiently identifying cutting boundary to separate tooth from dental model still remains a challenge, due to various geometrical shapes of teeth, complex tooth arrangements and varying degrees of crowding problem. Most segmentation approaches presented before are not able to achieve a balance between fine segmentation results and simple operating procedure. In this article, we present a novel and efficient framework that achieves tooth segmentation based on the segmentation field...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227531/step-length-and-width-variability-while-walking-on-a-motion-simulator-mounted-treadmill
#2
Timothy Boerger, Jacob Van Dehy, Tanya Onushko, Brian Schmit, Allison Hyngstrom, Timothy Boerger, Jacob Van Dehy, Tanya Onushko, Brian Schmit, Allison Hyngstrom, Timothy Boerger, Brian Schmit, Allison Hyngstrom, Jacob Van Dehy, Tanya Onushko
While devices which allow scientists to perturb normal walking are becoming increasingly common, postural adaptations to these perturbations have not been fully quantified. One way to quantify postural responses to perturbations are through the assessment of variability of step length and width. In the present study we determined variability of both step length and width while subjects walked under perturbations of varying amplitude in roll, pitch, yaw, anteroposterior, lateral, and combined roll, pitch, yaw directions...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28223079/pie-waste-a-component-of-food-waste-and-a-renewable-substrate-for-producing-ethanol
#3
Margaret Magyar, Leonardo da Costa Sousa, Singaram Jayanthi, Venkatesh Balan
Sugar-rich food waste is a sustainable feedstock that can be converted into ethanol without an expensive thermochemical pretreatment that is commonly used in first and second generation processes. In this manuscript we have outlined the pie waste conversion to ethanol through a two-step process, namely, enzyme hydrolysis using commercial enzyme products mixtures and microbial fermentation using yeast. Optimized enzyme cocktail was found to be 45% alpha amylase, 45% gamma amylase, and 10% pectinase at 2.5mg enzyme protein/g glucan produced a hydrolysate with high glucose concentration...
February 17, 2017: Waste Management
https://www.readbyqxmd.com/read/28220053/simulation-study-on-effects-of-order-and-step-size-of-runge-kutta-methods-that-solve-contagious-disease-and-tumor-models
#4
Wang Z, Wang Q, Klinke Dj
Biological processes such as contagious disease spread patterns and tumor growth dynamics are modelled using a set of coupled differential equations. Experimental data is usually used to calibrate models so they can be used to make future predictions. In this study, numerical methods were implemented to approximate solutions to mathematical models that were not solvable analytically, such as a SARS model. More complex models such as a tumor growth model involve high-dimensional parameter spaces; efficient numerical simulation techniques were used to search for optimal or close-to-optimal parameter values in the equations...
September 2016: Journal of Computer Science and Systems Biology
https://www.readbyqxmd.com/read/28219307/comparative-evaluation-of-posterior-cruciate-ligament-in-total-knee-arthroplasty
#5
Yuan Ma, Wei-Jia Chen, Ryuji Nagamine
INTRODUCTION: It has been realized that for osteoarthritis (OA) knee with varus deformity, posterior cruciate ligament (PCL) release resulted in the increase of the flexion gap without significant effect on the extension gap. While the effect of release on gap angle is still obscure. On the other hand, gap distance and varus angle measured under different distraction forces suggest different patterns. OBJECTIVES: In the current study, mechanical gap balance in displacement and angular alternation of extension and flexion gaps will be evaluated, with PCL fully retained or resected under different distracting forces in varus knees...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28215222/nf-%C3%AE%C2%BAb-as-a-therapeutic-target-in-inflammatory-associated-bone-diseases
#6
T-H Lin, J Pajarinen, L Lu, A Nabeshima, L A Cordova, Z Yao, S B Goodman
Inflammation is a defensive mechanism for pathogen clearance and maintaining tissue homeostasis. In the skeletal system, inflammation is closely associated with many bone disorders including fractures, nonunions, periprosthetic osteolysis (bone loss around orthopedic implants), and osteoporosis. Acute inflammation is a critical step for proper bone-healing and bone-remodeling processes. On the other hand, chronic inflammation with excessive proinflammatory cytokines disrupts the balance of skeletal homeostasis involving osteoblastic (bone formation) and osteoclastic (bone resorption) activities...
2017: Advances in Protein Chemistry and Structural Biology
https://www.readbyqxmd.com/read/28213648/-state-of-the-art-in-fluid-and-volume-therapy-a%C3%A2-user-friendly-staged-concept
#7
M Rehm, N Hulde, T Kammerer, A S Meidert, K Hofmann-Kiefer
Adequate fluid therapy is highly important for the perioperative outcome of our patients. Both, hypovolemia and hypervolemia can lead to an increase in perioperative complications and can impair the outcome. Therefore, perioperative infusion therapy should be target-oriented. The main target is to maintain the patient's preoperative normovolemia by using a sophisticated, rational infusion strategy.Perioperative fluid losses should be discriminated from volume losses (surgical blood loss or interstitial volume losses containing protein)...
February 17, 2017: Der Anaesthesist
https://www.readbyqxmd.com/read/28210064/toe-functions-have-little-effect-on-dynamic-balance-ability-in-elderly-people
#8
Yoshinobu Yoshimoto, Yukitsuna Oyama, Mamoru Tanaka, Asuka Sakamoto
[Purpose] The purpose of this study was to examine the toe function of elderly people and the association with the dynamic balance ability for the developing effective fall-prevention measures. [Subjects and Methods] Seventy-eight participants in a community health service were included in this cross-sectional study. The Timed Up and Go Test and Four Square Step Test were used to test dynamic balance ability. The toe functions related to dynamic balance ability were toe flexion strength, presence or absence of restricted range of motion of the hallux, presence or absence of hallux pain, and hallux valgus angle...
January 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28208330/heterogeneous-out-of-equilibrium-nonlinear-q-voter-model-with-zealotry
#9
Andrew Mellor, Mauro Mobilia, R K P Zia
We study the dynamics of the out-of-equilibrium nonlinear q-voter model with two types of susceptible voters and zealots, introduced in Mellor et al. [Europhys. Lett. 113, 48001 (2016)EULEEJ0295-507510.1209/0295-5075/113/48001]. In this model, each individual supports one of two parties and is either a susceptible voter of type q_{1} or q_{2}, or is an inflexible zealot. At each time step, a q_{i}-susceptible voter (i=1,2) consults a group of q_{i} neighbors and adopts their opinion if all group members agree, while zealots are inflexible and never change their opinion...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28208109/stability-against-backward-balance-loss-age-related-modifications-following-slip-like-perturbations-of-multiple-amplitudes
#10
Dario Martelli, Federica Aprigliano, Peppino Tropea, Guido Pasquini, Silvestro Micera, Vito Monaco
Falls are one of the most serious problems in the elderly. Although previous studies clearly link the increased risk of falls with ageing, the mechanisms responsible for the modifications of reactive motor behaviours in response to external perturbations are not yet fully understood. This study investigated how the stability against backward balance loss is affected by aging and intensity of perturbations. The Margin of Stability (MoS) was estimated while eight young and eight elderly adults managed three slip-like perturbations of different intensities while walking at the same normalized speed...
February 9, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28207400/a-low-cost-adaptive-balance-training-platform-for-stroke-patients-a-usability-study
#11
Sunny Verma, Deepesh Kumar, Animesh Kumawat, Anirban Dutta, Uttama Lahiri
Stroke patients usually suffer from asymmetric posture due to hemi-paresis that can result in reduced postural controllability leading to a balance deficit. This deficit increases the risk of falls, which often makes them dependent on caregivers for community ambulation, thus deteriorating their quality of life. Conventional balance training involves rehabilitation exercises performed under physiotherapist's supervision where the scarcity of trained professionals as well as the cost of clinic-based rehabilitation programs can deter stroke survivors from undergoing regular balance training...
February 9, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28203208/changes-in-heart-rate-variability-recorded-in-natural-situation-with-t-shirt-integrated-sensors-and-level-of-observed-behavioral-excitation-a-pilot-study-of-patients-with-intellectual-disabilities-and-psychiatric-disorders
#12
Julie Palix, Michel Akselrod, Charly Cungi, Fabienne Giuliani, Jérôme Favrod
BACKGROUND: The present study investigates the possibilities of using heart rate variability (HRV) parameters as physiological markers that precede increase in observed behavioral excitation of intellectually disabled individuals. The ability to recognize or predict such patterns, especially in patients showing unpredictable reactions and language deficiencies, might be a major step forward in clinical research. METHOD: Thirteen volunteers with intellectual disabilities, who had suffered of at least one event of overt aggression in the preceding 3 months, participated to the study...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28202383/a-randomized-controlled-trial-of-screening-risk-modification-and-physical-therapy-to-prevent-falls-among-the-elderly-recently-discharged-from-the-emergency-department-to-the-community-the-steps-to-avoid-falls-in-the-elderly-study
#13
David B Matchar, Pamela W Duncan, Christopher T C Lien, Marcus Eng Hock Ong, Mina Lee, Fei Gao, Rita Sim, Kirsten Eom
OBJECTIVE: To evaluate the effectiveness of a multifactorial, tailored program of physical therapy to reduce the occurrence of falls among a heterogeneous group of high-risk elderly Singaporeans recently discharged from the Emergency Department (ED). DESIGN: Randomized controlled trial. SETTING: Communities in Central and East regions in Singapore. PARTICIPANTS: 354 adults aged at least 65 years who were seen at ED for a fall or fall-related injuries and discharged home...
February 12, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28202037/tailored-multifactorial-intervention-to-improve-dizziness-symptoms-and-quality-of-life-balance-and-gait-in-dizziness-sufferers-aged-over-50%C3%A2-years-protocol-for-a-randomised-controlled-trial
#14
Jasmine C Menant, Americo A Migliaccio, Cameron Hicks, Joanne Lo, Daniela Meinrath, Mayna Ratanapongleka, Jessica Turner, Daina L Sturnieks, Kim Delbaere, Nickolai Titov, Catherine McVeigh, Jacqueline C T Close, Stephen R Lord
BACKGROUND: Dizziness is a frequently reported symptom in older people that can markedly impair quality of life. This manuscript presents the protocol for a randomised controlled trial, which has the main objective of determining the impact of comprehensive assessment followed by a tailored multifaceted intervention in reducing dizziness episodes and symptoms, improving associated impairments to balance and gait and enhancing quality of life in older people with self-reported significant dizziness...
February 15, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/28196297/targeting-invasive-properties-of-melanoma-cells
#15
REVIEW
Imanol Arozarena, Claudia Wellbrock
Melanoma is a skin cancer notorious for its metastatic potential. As an initial step of the metastatic cascade melanoma cells part from the primary tumour and invade the surrounding tissue, which is crucial for their dissemination and the formation of distant secondary tumours. Over the last two decades our understanding of both, general and melanoma specific mechanisms of invasion has significantly improved, but to date no efficient therapeutic strategy tackling the invasive properties of melanoma cells has reached the clinic...
February 14, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28195607/effects-of-cementing-on-ligament-balance-during-total-knee-arthroplasty
#16
Jimmy Chow, Kevin Wang, Leah Elson, Christopher Anderson, Martin Roche
Complications related to joint imbalance may contribute to some of the most predominant modes of failure in total knee arthroplasty (TKA). These complications include instability, aseptic loosening, asymmetric component wear, and idiopathic pain. Fixation may represent a step that introduces unchecked variability into the procedure and may contribute to the incidence of joint imbalance-related complications. The ability to quantify in vivo loading in the medial and lateral compartments would allow for the ability to confirm balance after fixation and prior to wound closure...
February 13, 2017: Orthopedics
https://www.readbyqxmd.com/read/28192367/the-occurrence-of-enhanced-biological-phosphorus-removal-in-a-200-000-m-3-day-partial-nitration-and-anammox-activated-sludge-process-at-the-changi-water-reclamation-plant-singapore
#17
Yeshi Cao, Bee Hong Kwok, Mark C M van Loosdrecht, Glen T Daigger, Hui Yi Png, Wah Yuen Long, Chua Seng Chye, Yahya A B D Ghani
Mainstream partial nitritation and Anammox (PN/A) has been observed and studied in the step-feed activated sludge process at the Changi water reclamation plant (WRP), which is the largest WRP (800,000 m(3)/d) in Singapore. This paper presents the study results for enhanced biological phosphorus removal (EBPR) co-existing with PN/A in the activated sludge process. Both the in-situ EBPR efficiency and ex-situ activities of phosphorus release and uptake were high. The phosphorus accumulating organisms were dominant, with little presence of glycogen accumulating organisms in the activated sludge...
February 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28191640/pathogen-safety-of-a-pasteurized-four-factor-human-prothrombin-complex-concentrate-preparation-using-serial-20n-virus-filtration
#18
Thomas Nowak, Birgit Popp, Albrecht Gröner, Wolfram Schäfer, Uwe Kalina, Karlheinz Enssle, Nathan J Roth
BACKGROUND: Beriplex P/N/Kcentra/Coaplex/Confidex is a four-factor human prothrombin complex concentrate (PCC). Here, we describe the pathogen safety profile and biochemical characteristics of an improved manufacturing process that further enhances the virus safety of Beriplex P/N. STUDY DESIGN AND METHODS: Samples of product intermediates were spiked with test viruses, and prions were evaluated under routine production and robustness conditions of the scale-down version of the commercial manufacturing process for their capacity to inactivate or remove pathogens...
February 12, 2017: Transfusion
https://www.readbyqxmd.com/read/28187940/carbon-dioxide-consumption-of-the-microalga-scenedesmus-obtusiusculus-under-transient-inlet-co2-concentration-variations
#19
Juan Cabello, Marcia Morales, Sergio Revah
The extensive microalgae diversity offers considerable versatility for a wide range of biotechnological applications in environmental and production processes. Microalgal cultivation is based on CO2 fixation via photosynthesis and, consequently, it is necessary to evaluate, in a short time and reliable way, the effect of the CO2 gas concentration on the consumption rate and establish the tolerance range of different strains and the amount of inorganic carbon that can be incorporated into biomass in order to establish the potential for industrial scale application...
February 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28187229/protein-deprivation-decreases-male-survival-and-the-intensity-of-sexual-antagonism-in-southern-field-crickets-gryllus-bimaculatus
#20
Chang S Han, Niels J Dingemanse
Recent theory predicts that the magnitude of sexual antagonism should depend on how well populations are adapted to their environment. We tested this idea experimentally by comparing intersexual genetic correlations for adult survival in pedigreed populations of Southern field crickets (Gryllus bimaculatus) raised on naturally balanced (free-choice) vs. imbalanced (protein-deprived) diets. We tested for 1) sex differences in nutritional intake and preference, 2) sex-specific effects of protein deprivation on survival and 3) diet-dependence of the level of sexual antagonism...
February 10, 2017: Journal of Evolutionary Biology
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