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Hoda Mohammadzade, Benyamin Ghojogh, Sina Faezi, Mahdi Shabany
Locating critical objects is crucial in various security applications and industries. For example, in security applications, such as in airports, these objects might be hidden or covered under shields or secret sheaths. Millimeter-wave images can be utilized to discover and recognize the critical objects out of the hidden cases without any health risk due to their non-ionizing features. However, millimeter-wave images usually have waves in and around the detected objects, making object recognition difficult...
June 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
Ying-Yi Li, Hsien-Che Lee
Auto white balance (AWB) is an important operation in color imaging applications. Most existing AWB algorithms rely on some physical features and statistical properties of natural scenes. However, the AWB algorithms using statistical properties are sensitive to the statistics of the scene contents. Therefore, it is highly desirable to find physical features that are more robust and relatively insensitive to scene contents. In this paper, we propose such physical features based on surface reflection decomposition...
October 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
Shizhen Zhao, Kevin C Jones, Andrew J Sweetman
A wide range of studies have characterized different types of biosorbent, with regard to their interactions with chemicals. This has resulted in the development of poly-parameter linear free energy relationships (pp-LFERs) for the estimation of partitioning of neutral organic compounds to biological phases (e.g., storage lipids, phospholipids and serum albumins). The aims of this study were to explore and evaluate the influence of implementing pp-LFERs both into a one-compartment fish model and a multi-compartment physiologically based toxicokinetic (PBTK) fish model and the associated implications for chemical risk assessment...
October 3, 2017: Chemosphere
Kathryn E Gropp
Cancellous bone has high metabolic activity compared to many other bone compartments and can be affected not only by changes in physeal activity but also by perturbations in homeostasis caused by changes in physiology or on-target pharmacology. Examples of several types of resulting morphologic findings were presented; if known, the pathways causing morphologic changes were discussed.
January 1, 2017: Toxicologic Pathology
Sutada Lotinun, Jaijam Suwanwela, Suchit Poolthong, Roland Baron
Calcium is essential for normal bone growth and development. Inadequate calcium intake increases the risk of osteoporosis and fractures. Kit ligand/c-Kit signaling plays an important role in regulating bone homeostasis. Mice with c-Kit mutations are osteopenic. The present study aimed to investigate whether impairment of or reduction in c-Kit signaling affects bone turnover during calcium deprivation. Three-week-old male WBB6F1/J-Kit (W) /Kit (W-v) /J (W/W (v) ) mice with c-Kit point mutation, Kit (W-sh) /HNihrJaeBsmJ (W (sh) /W (sh) ) mice with an inversion mutation in the regulatory elements upstream of the c-Kit promoter region, and their wild-type controls (WT) were fed either a normal (0...
October 14, 2017: Calcified Tissue International
C Malherbe, R Umarova, M Zavaglia, C Kaller, L Beume, G Thomalla, C Weiller, C C Hilgetag
Stroke patients frequently display spatial neglect, an inability to report, or respond to, relevant stimuli in the contralesional space. Although this syndrome is widely considered to result from the dysfunction of a large-scale attention network, the individual contributions of damaged grey and white matter regions to neglect are still being disputed. Moreover, while the neuroanatomy of neglect in right hemispheric lesions is well studied, the contributions of left hemispheric brain regions to visuospatial processing are less well understood...
October 11, 2017: Neuropsychologia
Sahin Buyukdagli, T Ala-Nissila
The efficiency of nanopore-based polymer sensing devices depends on the fast capture of anionic polyelectrolytes by negatively charged pores. This requires the cancellation of the electrostatic barrier associated with repulsive polymer-pore interactions. We develop a correlation-corrected theory to show that the barrier experienced by the polymer can be efficiently overcome by the addition of multivalent cations into the electrolyte solution. Cation adsorption into the pore enhances the screening ability of the pore medium with respect to the bulk reservoir which translates into an attractive force on the polymer...
October 14, 2017: Journal of Chemical Physics
Conghui Liu, Hong Jiang, Wenxiang Zhang, Huiqun Yin
Previous studies have shown that double ovarian stimulation could obtain more oocytes in women with poor ovarian response. This retrospective case-control study aimed to investigate the efficacy of double ovarian stimulation in older women. One hundred and sixteen women aged ≥38 years who received double ovarian stimulation were assigned to the study, with 103 divided into four groups according to follicular-phase ovarian stimulation protocols, including gonadotrophin-releasing hormone agonist short protocol (n = 27), gonadotrophin-releasing hormone antagonist protocol (n = 32), mild stimulation protocol (n = 21) and medrocyprogesterone acetate (MPA) pituitary down-regulation protocol (n = 23)...
August 24, 2017: Reproductive Biomedicine Online
Joseph J Schreiber, Thomas J McQuillan, Eni Halilaj, Joseph J Crisco, Arnold-Peter Weiss, Tarpit Patel, Deborah Kenney, Amy L Ladd
PURPOSE: Thumb carpometacarpal (CMC) osteoarthritis (OA) represents a major source of functional morbidity. The effects of early CMC OA on loading and use patterns potentially lead to changes in local bone density and microarchitecture. Hounsfield units (HU), a quantitative attenuation coefficient obtained from computed tomography (CT) scans, have been shown to be a reliable marker of bone density. We hypothesized that early CMC OA is associated with lower local bone density about the CMC joint as assessed by HU...
October 10, 2017: Journal of Hand Surgery
Madison Bertolin, Ryan Van Patten, Taylor Greif, Robert Fucetola
Objective: Predicting neurocognitive and functional outcomes in stroke is an important clinical task, especially in rehabilitation settings. We assessed acute predictors of cognitive and functional outcomes 6 months after mild to moderate stroke. Methods: We conducted a retrospective analysis of acute clinical data and 6-month follow-up telephone interviews for 498 mild to moderate stroke patients. Predictors were sociodemographic variables, the National Institute of Health Stroke Scale (NIHSS), basic physical measures, the Mesulam Cancellation Test, the Short Blessed Test (SBT), Trails A/B, and the Boston Naming Test...
September 25, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
Aurélien Perera
Aqueous mixtures of small molecules, such as lower n-alkanols for example, are known to be micro-segregated, with domains in the nano-meter range. One consequence of this micro-segregation would be the existence of long range domain-domain oscillatory correlations in the various atom-atom pair correlation functions, and subsequent pre-peaks in the corresponding atom-atom structure factors, in the q-vector range corresponding to nano-sized domains. However, no such pre-peak have ever been observed in the large corpus of radiation scattering data published so far on aqueous mixtures of small n-alkanols...
October 13, 2017: Physical Chemistry Chemical Physics: PCCP
Stephen Adams, William T Scherer, K Preston White, Jason Payne, Oved Hernandez, Mathew S Gerber, N Peter Whitehead
The Veterans Health Administration (VHA) is plagued by abnormally high no-show and cancellation rates that reduce the productivity and efficiency of its medical outpatient clinics. We address this issue by developing a dynamic scheduling system that utilizes mobile computing via geo-location data to estimate the likelihood of a patient arriving on time for a scheduled appointment. These likelihoods are used to update the clinic's schedule in real time. When a patient's arrival probability falls below a given threshold, the patient's appointment is canceled...
October 12, 2017: Journal of Medical Systems
Ravi Mahajan, Harish Ghildiyal, Ankit Khasgiwala, Gogulnathan Muthukrishnan, Sukhdeep Kahlon
OBJECTIVE: The aim of this retrospective study was to evaluate the outcomes of secondary alveolar bone grafting and late secondary alveolar bone grafting in 66 unilateral cleft lip and palate patients. MATERIALS AND METHODS: The total patients were 66 unilateral cleft lip and palate patients, out of which 19 patients underwent secondary alveolar bone grafting and 47 patients underwent late secondary alveolar bone grafting. Autogenous anterior iliac crest cancellous bone graft was harvested and used for grafting the alveolar clefts...
August 2017: Plastic Surgery
Carlos Francisco Silva, Teresa Guerra
INTRODUCTION: The purpose of this study was to understand the reasons and quantify the number of ultrasounds and computed tomographies that are potentially wasted in the hospital emergency in our institution, and the importance that the radiologist can have in the management and screening of these exams. MATERIAL AND METHODS: It was decided that urgent tests that were pending for more than seven days would be the object of analysis as to why they were not performed, consulting the electronic medical records...
September 29, 2017: Acta Médica Portuguesa
Asma Deeb, Nabras Al Qahtani, Amal Al Ali, Mariette Akle
PURPOSE: Insulin pumps are widely used in diabetes. They are equipped with safety alarms to alert users. Pump manuals contain alarm codes and how to troubleshoot them. However, these manuals are lengthy and difficult to use, particularly in emergencies. We aim to assess the impact of targeted education on warnings and errors in improving competency to troubleshoot the alarms. METHODS: Twenty-one patients, with a median age of 13, were recruited over a 5-month period...
September 2017: Annals of Pediatric Endocrinology & Metabolism
David W Dempster, Hua Zhou, Robert R Recker, Jacques P Brown, Christopher P Recknor, E Michael Lewiecki, Paul D Miller, Sudhaker D Rao, David L Kendler, Robert Lindsay, John H Krege, Jahangir Alam, Kathleen A Taylor, Thomas E Melby, Valerie A Ruff
There has been renewed interest of late in the role of modeling-based formation (MBF) during osteoporosis therapy. Here we describe early effects of an established anabolic (teriparatide) versus antiresorptive (denosumab) agent on remodeling-based formation (RBF), MBF, and overflow MBF (oMBF) in human transiliac bone biopsies. Postmenopausal women with osteoporosis received subcutaneous teriparatide (n = 33, 20 µg/day) or denosumab (n = 36, 60 mg once/6 months), open-label for 6 months at 7 US and Canadian sites...
October 12, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
Shinsuke Ishihara, Curtis J O'Kelly, Takeshi Tanaka, Hiromichi Kataura, Jan Labuta, Yoshitaka Shingaya, Tomonobu Nakayama, Takeo Ohsawa, Takashi Nakanishi, Timothy M Swager
As-synthesized single-walled carbon nanotubes (SWCNTs) are a mixture of metallic and semiconducting tubes, and separation is essential to improve the performances of SWCNT-based electric devices. Our chemical sensor monitors the conductivity of a SWCNT network, wherein each tube is wrapped by insulating metallo-supramolecular polymer (MSP). Vapors of strong electro-philes such as diethyl chlorophosphate (DECP), a nerve agent simulant, can trigger disassembly of MSP, resulting in conductive SWCNT pathways. Herein, we report that separated SWCNTs have a large impact on the sensitivity and selectivity of chemical sensors...
October 12, 2017: ACS Applied Materials & Interfaces
Guojin Hou, Fang Zhou, Yan Guo, Zhongwei Yang, Ailing Li, Chen Wang, Dong Qiu
The purpose is to study the in vivo bioactivity of this scaffold and verify its ability to simulate the characteristics of cancellous bone. Twenty-four adult New Zealand white rabbits were divided into three groups. Bone defects above the femoral condylar of both sides were created. A newly designed bioactive nanoparticle-gelatin composite scaffold was implanted to the experimental side, while the control side was left without implantation. The repair of bone defect was monitored by X-ray examination, gross observation, Micro-CT examination and histological observation of the area of bone defect 4, 8 and 12 weeks after surgery...
October 11, 2017: Journal of Materials Science. Materials in Medicine
R Singh, R B Singh, M Mahendra
Introduction: Isolated Hoffa fracture is an infrequent injury and little research has been done on this subject. The purpose of this study was to evaluate the functional outcome and complications of surgically managed Hoffa fractures with cannulated cancellous screw. Materials and Methods: Between 2011 and 2014, eight isolated Hoffa fractures in seven adult patients with mean age 39.8±11.9 years (range 25-60 years) were managed with cannulated cancellous screw of 6.5mm diameter applied in anterior to posterior direction using swashbuckler and medial parapatellar approach for lateral and medial Hoffa fractures respectively...
July 2017: Malaysian Orthopaedic Journal
Haruka Kimura, Tomohisa Nagoshi, Akira Yoshii, Yusuke Kashiwagi, Yoshiro Tanaka, Keiichi Ito, Takuya Yoshino, Toshikazu D Tanaka, Michihiro Yoshimura
In addition to the various effects of natriuretic peptides (NPs) on cardiovascular systems, increasing attention is being paid to the possibility that NPs induce adipose tissue browning and activate thermogenic program. We herein established a direct intracellular temperature measurement system using a fluorescent thermoprobe and investigated the thermogenic effects of A-type NP (ANP) on brown adipocytes. The thermoprobe was successfully introduced into rat brown adipocytes, and the temperature dependent change in fluorescence intensity ratio was measured using a fluorescence microscope...
October 11, 2017: Scientific Reports
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