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https://www.readbyqxmd.com/read/28749428/cannabinoid-receptor-1-and-fatty-acid-amide-hydrolase-contribute-to-operant-sensation-seeking-in-mice
#1
Alexander I Helfand, Christopher M Olsen, Cecilia J Hillard
A large body of evidence in humans and preclinical models supports a role for the endocannabinoid system in the proper execution of motivated or goal-directed behaviors. Operant sensation seeking (OSS) is a task that uses varied sensory stimuli as a reinforcer to maintain operant responding in mice. The purpose of the studies in this report was to begin to explore the role of endocannabinoid signaling in OSS utilizing cannabinoid receptor 1 (CB1R) and fatty acid amide hydrolase (FAAH) knock out mice. Compared to wild type littermate controls, CB1R knock out mice exhibited significantly fewer active responses and earned significantly fewer reinforcers in fixed ratio and progressive ratio schedules...
July 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28749407/multi-robot-interfaces-and-operator-situational-awareness-study-of-the-impact-of-immersion-and-prediction
#2
Juan Jesús Roldán, Elena Peña-Tapia, Andrés Martín-Barrio, Miguel A Olivares-Méndez, Jaime Del Cerro, Antonio Barrientos
Multi-robot missions are a challenge for operators in terms of workload and situational awareness. These operators have to receive data from the robots, extract information, understand the situation properly, make decisions, generate the adequate commands, and send them to the robots. The consequences of excessive workload and lack of awareness can vary from inefficiencies to accidents. This work focuses on the study of future operator interfaces of multi-robot systems, taking into account relevant issues such as multimodal interactions, immersive devices, predictive capabilities and adaptive displays...
July 27, 2017: Sensors
https://www.readbyqxmd.com/read/28749361/output-feedback-control-of-unknown-linear-discrete-time-systems-with-stochastic-measurement-and-process-noise-via-approximate-dynamic-programming
#3
Jun-Sheng Wang, Guang-Hong Yang
This paper studies the optimal output-feedback control problem for unknown linear discrete-time systems with stochastic measurement and process noise. A dithered Bellman equation with the innovation covariance matrix is constructed via the expectation operator given in the form of a finite summation. On this basis, an output-feedback-based approximate dynamic programming method is developed, where the terms depending on the innovation covariance matrix are available with the aid of the innovation covariance matrix identified beforehand...
July 25, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28748710/national-suicide-prevention-local-mental-health-resources-and-suicide-rates-in-japan
#4
Miharu Nakanishi, Kaori Endo
BACKGROUND: Suicide rates in Japan are relatively high in OECD countries. A national fund to help local authorities implement suicide prevention programs was launched in 2009. The national suicide prevention project was transferred from the Cabinet Office to the Ministry of Health, Labor, and Welfare on April 2016, with a greater focus on mental health promotion by local governments. AIMS: The aim of the present study was to (a) identify local authorities' implementation of suicide prevention programs in terms of local health policies, and (b) examine the associations between local health resources and suicide rates in Japan...
July 27, 2017: Crisis
https://www.readbyqxmd.com/read/28748438/combined-fast-selective-reduction-using-mn-based-catalysts-and-nonthermal-plasma-for-nox-removal
#5
Jun Xiang Chen, Kuan Lun Pan, Sheng Jen Yu, Shaw Yi Yen, Moo Been Chang
In this study, the concept of fast SCR for NO reduction with NH3 as reducing agent is realized via the combination of nonthermal plasma (NTP) with Mn-based catalyst. Experimental results indicate that 10% wt. Mn-Ce-Ni/TiO2 possesses better physical and chemical properties of surface, resulting in higher NO removal efficiency if compared with 10% wt. Mn-Ce/TiO2 and 10% wt. Mn-Ce-Cu/TiO2. Mn-Ce-Ni/TiO2 of 10% wt. achieves 100% NOx conversion at 150 °C, while 10% wt. Mn-Ce/TiO2 and 10% wt. Mn-Ce-Cu/TiO2 need to be operated at a temperature above 200 °C for 100% NOx conversion...
July 26, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28748369/classical-experiments-in-whole-body-metabolism-closed-circuit-respirometry
#6
REVIEW
Bruno Archiza, Joseph F Welch, A William Sheel
As part of a series of reviews aimed at providing historical context to the study of whole-body metabolism, this article focuses on the technique of closed-circuit respirometry. Developed by nineteenth century physiologists Henri-Victor Regnault and Jules de Reiset, a constant-pressure closed-circuit calorimeter capable of measuring oxygen consumption and carbon dioxide production in small animals became the framework for future experiments on whole-body metabolism in humans. The volume-loss and volume-replenishment techniques can be used to indirectly assess energy expenditure using an oxygen reservoir; spirometers are simplistic in design but difficult to operate...
July 26, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28747901/could-the-recent-zika-epidemic-have-been-predicted
#7
Ángel G Muñoz, Madeleine C Thomson, Anna M Stewart-Ibarra, Gabriel A Vecchi, Xandre Chourio, Patricia Nájera, Zelda Moran, Xiaosong Yang
Given knowledge at the time, the recent 2015-2016 zika virus (ZIKV) epidemic probably could not have been predicted. Without the prior knowledge of ZIKV being already present in South America, and given the lack of understanding of key epidemiologic processes and long-term records of ZIKV cases in the continent, the best related prediction could be carried out for the potential risk of a generic Aedes-borne disease epidemic. Here we use a recently published two-vector basic reproduction number model to assess the predictability of the conditions conducive to epidemics of diseases like zika, chikungunya, or dengue, transmitted by the independent or concurrent presence of Aedes aegypti and Aedes albopictus...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28747884/geomagnetic-navigation-of-autonomous-underwater-vehicle-based-on-multi-objective-evolutionary-algorithm
#8
Hong Li, Mingyong Liu, Feihu Zhang
This paper presents a multi-objective evolutionary algorithm of bio-inspired geomagnetic navigation for Autonomous Underwater Vehicle (AUV). Inspired by the biological navigation behavior, the solution was proposed without using a priori information, simply by magnetotaxis searching. However, the existence of the geomagnetic anomalies has significant influence on the geomagnetic navigation system, which often disrupts the distribution of the geomagnetic field. An extreme value region may easily appear in abnormal regions, which makes AUV lost in the navigation phase...
2017: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/28747252/analysis-of-the-tractive-force-pattern-on-a-knot-by-force-measurement-during-laparoscopic-knot-tying
#9
Kenta Takayasu, Kenji Yoshida, Hidefumi Kinoshita, Syunsuke Yoshimoto, Osamu Oshiro, Tadashi Matsuda
BACKGROUND: Quantifying surgical skills assists novice surgeons when learning operative techniques. We measured the interaction force at a ligation point and clarified the features of the force pattern among surgeons with different skill levels during laparoscopic knot tying. METHODS: Forty-four surgeons were divided into three groups based on experience: 13 novice (0-5 years), 16 intermediate (6-15 years), and 15 expert (16-30 years). To assess the tractive force direction and volume during knot tying, we used a sensor that measures six force-torque values (x-axis: Fx, y-axis: Fy, z-axis: Fz, and xy-axis: Fxy) attached to a slit Penrose drain...
July 19, 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28747207/lessons-learnt-from-the-magnet-malawian-german-hospital-partnership-the-german-perspective-on-contributions-to-patient-care-and-capacity-development
#10
Florian Neuhann, Sandra Barteit
BACKGROUND: Malawi is a low-income country with one of the highest HIV prevalence rates worldwide (Kendig et al., Trop Med Health 41:163-170, 2013). The health system depends largely on external funding. Official German development aid has supported health care in Malawi for many years (German Embassy Lilongwe, The German Development Cooperation in Malawi), including placing medical doctors in various departments of the Kamuzu Central Hospital (KCH) in Lilongwe. In 2008, a hospital partnership called MAGNET (Malawi German Networking for Capacity Building in Treatment, Training and Research at KCH) evolved as part of the German ESTHER network...
July 26, 2017: Globalization and Health
https://www.readbyqxmd.com/read/28747168/the-biobank-for-the-molecular-classification-of-kidney-disease-research-translation-and-precision-medicine-in-nephrology
#11
Daniel A Muruve, Michelle C Mann, Kevin Chapman, Josee F Wong, Pietro Ravani, Stacey A Page, Hallgrimur Benediktsson
BACKGROUND: Advances in technology and the ability to interrogate disease pathogenesis using systems biology approaches are exploding. As exemplified by the substantial progress in the personalized diagnosis and treatment of cancer, the application of systems biology to enable precision medicine in other disciplines such as Nephrology is well underway. Infrastructure that permits the integration of clinical data, patient biospecimens and advanced technologies is required for institutions to contribute to, and benefit from research in molecular disease classification and to devise specific and patient-oriented treatments...
July 26, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28747146/age-dependent-subchondral-bone-remodeling-and-cartilage-repair-in-a-minipig-defect-model
#12
Christian G Pfeifer, Matthew B Fisher, Vishal Saxena, Minwook Kim, Elizabeth A Henning, David R Steinberg, George R Dodge, Robert Leon Mauck
Following cartilage injury and repair, the subchondral bone plate remodels. Skeletal maturity likely impacts both bone remodeling and inherent cartilage repair capacity. The objective of this study was to evaluate subchondral bone remodeling as a function of injury type, repair scenario and skeletal maturity in a Yucatan minipig model. Cartilage defects (4mm) were created bilaterally in the trochlear groove. Treatment conditions included a full thickness chondral defect (FCD, n=3adult/3juvenile), a partial thickness (~50%) chondral defect (PCD, n=3/3), and FCD treated with microfracture (MFX, n=3/3)...
July 26, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28746980/single-incision-sling-operations-for-urinary-incontinence-in-women
#13
REVIEW
Arjun Nambiar, June D Cody, Stephen T Jeffery, Patricia Aluko
BACKGROUND: Urinary incontinence has been shown to affect up to 50% of women. Studies in the USA have shown that up to 80% of these women have an element of stress urinary incontinence. This imposes significant health and economic burden on society and the women affected. Colposuspension and now mid-urethral slings have been shown to be effective in treating patients with stress incontinence. However, associated adverse events include bladder and bowel injury, groin pain and haematoma formation...
July 26, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28746816/expression-of-classical-mediators-in-hearts-of-rats-with-hepatic-dysfunction
#14
Dagmar Jarkovska, Monika Bludovska, Eliska Mistrova, Vera Krizkova, Dana Kotyzova, Tereza Kubikova, Jana Slavikova, Sumeyye Nur Erek, Aleksandar Djordjevic, Magdalena Chottova Dvorakova
Liver cirrhosis is associated with impairment of cardiovascular function including alterations of the heart innervation, humoral and nervous dysregulation, changes in systemic circulation and electrophysiological abnormalities. Choline acetyltransferase (ChAT), enzyme forming acetylcholine, tyrosine hydroxylase (TH) and dopamine-β-hydroxylase (DBH), enzymes participating in noradrenaline synthesis, are responsible for the production of classical neurotransmitters and atrial natriuretic peptide (ANP) is produced by cardiomyocytes...
July 26, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28746813/binocular-mechanisms-of-3d-motion-processing
#15
Lawrence K Cormack, Thaddeus B Czuba, Jonas Knöll, Alexander C Huk
The visual system must recover important properties of the external environment if its host is to survive. Because the retinae are effectively twodimensional but the world is three-dimensional (3D), the patterns of stimulation both within and across the eyes must be used to infer the distal stimulus-the environment-in all three dimensions. Moreover, animals and elements in the environment move, which means the input contains rich temporal information. Here, in addition to reviewing the literature, we discuss how and why prior work has focused on purported isolated systems (e...
July 26, 2017: Annual Review of Vision Science
https://www.readbyqxmd.com/read/28746418/a-user-friendly-low-cost-turbidostat-with-versatile-growth-rate-estimation-based-on-an-extended-kalman-filter
#16
Stefan A Hoffmann, Christian Wohltat, Kristian M Müller, Katja M Arndt
For various experimental applications, microbial cultures at defined, constant densities are highly advantageous over simple batch cultures. Due to high costs, however, devices for continuous culture at freely defined densities still experience limited use. We have developed a small-scale turbidostat for research purposes, which is manufactured from inexpensive components and 3D printed parts. A high degree of spatial system integration and a graphical user interface provide user-friendly operability. The used optical density feedback control allows for constant continuous culture at a wide range of densities and offers to vary culture volume and dilution rates without additional parametrization...
2017: PloS One
https://www.readbyqxmd.com/read/28746319/systemic-inflammatory-response-syndrome-following-gastrointestinal-surgery
#17
U Koirala, P B Thapa, M R Joshi, D R Singh, S K Sharma
INTRODUCTION: Systemic inflammatory response syndrome symptoms immediately after surgery have lately been regarded as potential warnings of impending post-operative complications and multiple organ failure. This study was conducted to find out the clinical significance of systemic inflammatory response syndrome in postoperative patients and to investigate the relationship between the duration of post-operative systemic inflammatory response syndrome and the post-operative morbidity and mortality...
April 2017: JNMA; Journal of the Nepal Medical Association
https://www.readbyqxmd.com/read/28746304/complex-cellular-logic-computation-using-ribocomputing-devices
#18
Alexander A Green, Jongmin Kim, Duo Ma, Pamela A Silver, James J Collins, Peng Yin
Synthetic biology aims to develop engineering-driven approaches to the programming of cellular functions that could yield transformative technologies. Synthetic gene circuits that combine DNA, protein, and RNA components have demonstrated a range of functions such as bistability, oscillation, feedback, and logic capabilities. However, it remains challenging to scale up these circuits owing to the limited number of designable, orthogonal, high-performance parts, the empirical and often tedious composition rules, and the requirements for substantial resources for encoding and operation...
July 26, 2017: Nature
https://www.readbyqxmd.com/read/28746132/three-dimensional-cross-platform-planning-for-complex-spinal-procedures-a-new-method-adaptive-to-different-navigation-systems
#19
Michael Kosterhon, Angelika Gutenberg, Sven R Kantelhardt, Jens Conrad, Amr Nimer Amr, Joachim Gawehn, Alf Giese
STUDY DESIGN: A feasibility study. OBJECTIVE: To develop a method based on the DICOM standard which transfers complex 3-dimensional (3D) trajectories and objects from external planning software to any navigation system for planning and intraoperative guidance of complex spinal procedures. SUMMARY OF BACKGROUND DATA: There have been many reports about navigation systems with embedded planning solutions but only few on how to transfer planning data generated in external software...
August 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28746077/disrupted-offset-analgesia-distinguishes-patients-with-chronic-pain-from-healthy-controls
#20
Hiroyuki Kobinata, Eri Ikeda, Shuo Zhang, Tianjiao Li, Koshi Makita, Jiro Kurata
Offset analgesia (OA) represents a disproportionately large decrease of pain perception after a brief, temporary increment of thermal pain stimulus and was reported attenuated in patients with neuropathic pain. We examined whether OA depends on the increment duration before offset, and whether individual features of OA distinguish patients with chronic pain and healthy controls. We used a Peltier-type thermal stimulator and OA paradigms including 5-, 10-, or 15-s duration of 1°C-increment (T2) over 45°C. We first examined OA response, on the left volar forearm, at 3 different T2's in 40 healthy volunteers, and OA and constant stimulus responses in 12 patients with chronic pain and 12 matched healthy controls...
June 21, 2017: Pain
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