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Matthew Jacobs, Martin Lopez-Garcia, O-Phart Phrathep, Tracy Lawson, Ruth Oulton, Heather M Whitney
Enhanced light harvesting is an area of interest for optimizing both natural photosynthesis and artificial solar energy capture(1,2). Iridescence has been shown to exist widely and in diverse forms in plants and other photosynthetic organisms and symbioses(3,4), but there has yet to be any direct link demonstrated between iridescence and photosynthesis. Here we show that epidermal chloroplasts, also known as iridoplasts, in shade-dwelling species of Begonia(5), notable for their brilliant blue iridescence, have a photonic crystal structure formed from a periodic arrangement of the light-absorbing thylakoid tissue itself...
October 24, 2016: Nature Plants
Rajesh Pattebahadur, Shipra Singhi, Prafulla Kumar Maharana
A 7-year-old male child presented with a history of discolouration of right eye since birth. On examination visual acuity was 6/6 on Snellen's chart in both eyes; anterior segment was within normal limits except for the brilliant blue discolouration of the inferior quadrant and superior quadrant of right iris and left eye iris, respectively. Both eyes had a clear lens and fundus findings were within normal limits. A detailed history from parents revealed that the child had difficulty in hearing and slurring of speech...
September 30, 2016: BMJ Case Reports
B Barrocas, A J Silvestre, A G Rolo, O C Monteiro
With the aim of producing materials with enhanced optical and photocatalytic properties, titanate nanotubes (TNTs) modified by cobalt doping (Co-TNT) and by Na(+)→ Co ion-exchange (TNT/Co) were successfully prepared by a hydrothermal method. The influence of the doping level and of the cobalt position in the TNT crystalline structure was studied. Although no perceptible influence of the cobalt ion position on the morphology of the prepared titanate nanotubes was observed, the optical behaviour of the cobalt modified samples is clearly dependent on the cobalt ions either substituting the Ti(4+) ions in the TiO6 octahedra building blocks of the TNT structure (doped samples) or replacing the Na(+) ions between the TiO6 interlayers (ion-exchange samples)...
July 21, 2016: Physical Chemistry Chemical Physics: PCCP
Supriya Arora, Neha Goel, Tarun Arora, Prateeksha Sharma, Usha Kaul Raina, Meenakshi Thakar, Basudeb Ghosh
BACKGROUND AND OBJECTIVE: To evaluate retinal nerve fiber layer (RNFL) thickness after conventional brilliant blue (BB) assisted macular hole (MH) surgery versus BB selective staining using whole blood (WB) in MH surgery. PATIENTS AND METHODS: Sixty eyes with stage 4 idiopathic MH with a clear media were randomly divided into two equal groups. Group A eyes underwent sequential intraoperative use of autologous heparinized WB followed by BB dye for staining internal limiting membrane, whereas eyes in group B were subjected to conventional BB staining...
May 1, 2016: Ophthalmic Surgery, Lasers & Imaging Retina
A Chieli, J Sanyova, B Doherty, B G Brunetti, C Miliani
In this work a combined chromatographic and spectroscopic approach is used to provide a diagnostic assessment of semi-synthetic ammoniacal cochineal through the syntheses of its dyes and lakes according to art historical recipes. Commercially introduced in the late XIX century as a dye and pigment, it was used to obtain a brilliant purplish/violet nuance which provided a more stable option over carminic acid although its evidenced use in manufacts and artworks of heritage importance have been scarcely documented...
June 5, 2016: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Paolo Emilio Puddu
André, Julien, Auguste Jouve was born in Marseilles on June 10, 1909 son of Xavier Marie Francois Louis Jouve MD and Marie Louise Charlotte Vigliengo his wife. He had a brilliant medical career in Marseilles: Resident at Marseilles Hospitals in 1931, major of his promotion, then an Assistant in 1943 and a Chief in 1951, to become Associate Professor of Medicine in 1946 and finally Full Professor of Clinical and Experimental Cardiology in 1954. Fellow of several Cardiological Societies, he became President of the French Society of Cardiology in 1968, Vice-President of the European Society of Cardiology in 1972 and finally President of the French College of Vascular Pathology in 1973...
March 2016: Journal of Electrocardiology
Consolato Sergi
Hirschsprung's disease (HSCR) or congenital megacolon is one of the differential diagnoses of chronic constipation mostly in infancy and may indeed represent a challenge for pediatricians, pediatric surgeons, and pediatric pathologists. The diagnosis relies clearly on the identification of the absence of ganglion cells at the plexuses (submucosus and myentericus) of the bowel wall. HSCR is usually located at the terminal (distal) rectum with potential pre-terminal or proximal extension to the less distal large bowel (sigmoid colon)...
November 8, 2015: World Journal of Clinical Pediatrics
Jie Yang, Xiaodan Yang, Xiuyun Ye, Juan Lin
An enzyme-based method for destaining polyacrylamide gels stained with Coomassie Brilliant Blue R-250 is described. Distilled water supplemented with diluted fermentation broth of a laccase-producing white-rot fungus, Cerrena sp., was used for gel destaining, and a clear gel background was obtained in 2 h at 37 °C. Sensitivity of protein detection was 10 ng. The method did not require organic solvents or changing the destaining solution. Due to simultaneous gel destaining and dye decolorization, the colorless destaining solution can be disposed of directly...
January 15, 2016: Analytical Biochemistry
Timothy M Herr, Suzette J Bielinski, Erwin Bottinger, Ariel Brautbar, Murray Brilliant, Christopher G Chute, Joshua Denny, Robert R Freimuth, Andrea Hartzler, Joseph Kannry, Isaac S Kohane, Iftikhar J Kullo, Simon Lin, Jyotishman Pathak, Peggy Peissig, Jill Pulley, James Ralston, Luke Rasmussen, Dan Roden, Gerard Tromp, Marc S Williams, Justin Starren
Genomic, proteomic, epigenomic, and other "omic" data have the potential to enable precision medicine, also commonly referred to as personalized medicine. The volume and complexity of omic data are rapidly overwhelming human cognitive capacity, requiring innovative approaches to translate such data into patient care. Here, we outline a conceptual model for the application of omic data in the clinical context, called "the omic funnel." This model parallels the classic "Data, Information, Knowledge, Wisdom pyramid" and adds context for how to move between each successive layer...
2015: Journal of Pathology Informatics
Yan Deng, Xue-Ling Guo, Xiao Yuan, Jin Shang, Die Zhu, Hui-Guo Liu
BACKGROUND: The mechanism of the neural injury caused by chronic intermittent hypoxia (CIH) that characterizes obstructive sleep apnea syndrome (OSAS) is not clearly known. The purpose of this study was to investigate whether P2X7 receptor (P2X7R) is responsible for the CIH-induced neural injury and the possible pathway it involves. METHODS: Eight-week-old male C57BL/6 mice were used. For each exposure time point, eight mice divided in room air (RA) and IH group were assigned to the study of P2X7R expression...
August 20, 2015: Chinese Medical Journal
Michael Duszenko, Lars Redecke, Celestin Nzanzu Mudogo, Benjamin Philip Sommer, Stefan Mogk, Dominik Oberthuer, Christian Betzel
During the last decade, the number of three-dimensional structures solved by X-ray crystallography has increased dramatically. By 2014, it had crossed the landmark of 100 000 biomolecular structures deposited in the Protein Data Bank. This tremendous increase in successfully crystallized proteins is primarily owing to improvements in cloning strategies, the automation of the crystallization process and new innovative approaches to monitor crystallization. However, these improvements are mainly restricted to soluble proteins, while the crystallization and structural analysis of membrane proteins or proteins that undergo major post-translational modifications remains challenging...
August 2015: Acta Crystallographica. Section F, Structural Biology Communications
Caridad Rodríguez, Eugenio Hardy
We investigated the use of imidazole and zinc salts for the detection of lipopolysaccharide (LPS) aggregates separated by native agarose gel electrophoresis (NAGE). As a result, a new staining procedure was established by which as little as 1.5 μg of Escherichia coli O55:B5 LPS aggregates was detected by means of inducing a clear, transparent pattern, contrasted against an opaque background. E. coli O55:B5 LPS preparations treated with nucleases and proteinase K proved that the reverse-stained LPS pattern is not related to any potential artifacts caused by unrelated biomolecules (e...
September 15, 2015: Analytical Biochemistry
Hamed Karamishabankareh, Hadi Hajarian, Mohammadhamed Shahsavari, Ruhollah Moradinejad
Inequality in function of the left and right bovine ovaries and uterine horns was evaluated in two separate experiments. In the first experiment (in vivo), the relationship between the left and right ovarian activities and reproductive indices was evaluated. Therefore, the total number of 1284 randomly chosen lactating dairy cows were examined from Day 50 to 60 postpartum, and according to the presence of an active CL on the ovaries, they were divided into 502 LCL3-cows and 782 RCL3-cows (cows with an active CL on the left [L] or right [R] ovary, respectively)...
September 15, 2015: Theriogenology
Claudio Ghittino, Enrico Busato, Achille Casale
Carabus (Cathoplius) aliai was described as a separate species by Escalera in 1944 but since the 1950-60s it has been considered as a subspecies of Carabus (Cathoplius) stenocephalus Lucas, 1866. This downgrading was adopted after examining only a few specimens, due to their rarity in collections. In recent years, an important population of this taxon was rediscovered in the Tan-Tan area in southern Morocco. By combining field observations with laboratory breeding experiments including hybridization trials, and through the morphological examination of a representative number of individuals, it is confirmed that Carabusaliai is indeed a valid species...
2015: ZooKeys
Jérémy Danna, Jean-Luc Velay
The mastering of handwriting is so essential in our society that it is important to try to find new methods for facilitating its learning and rehabilitation. The ability to control the graphic movements clearly impacts on the quality of the writing. This control allows both the programming of letter formation before movement execution and the online adjustments during execution, thanks to diverse sensory feedback (FB). New technologies improve existing techniques or enable new methods to supply the writer with real-time computer-assisted FB...
2015: Frontiers in Psychology
Rachna Khera, Tejinder Singh, Nita Khuana, Naresh Gupta, A P Dubey
High-performance liquid chromatography (HPLC) is a technique introduced for the accurate diagnosis of hemoglobinopathies and thalassemias. The advantage of the HPLC system is the excellent resolution, reproducibility & quantification of several normal & abnormal hemoglobin resulting in accurate diagnosis of thalassemia syndromes. The purpose of this study is to evaluate the HPLC technique in diagnosis of thalassemia syndromes and also correlate it with clinicohematological profile in these cases. A total of 110 cases were diagnosed as thalassemias and hemoglobinopathies by Bio- Rad variant II HPLC system by β-thal short program...
March 2015: Indian Journal of Hematology & Blood Transfusion
Noriyuki Kodera, Toshio Ando
The quest for understanding the mechanism of myosin-based motility started with studies on muscle contraction. From numerous studies, the basic frameworks for this mechanism were constructed and brilliant hypotheses were put forward. However, the argument about the most crucial issue of how the actin-myosin interaction generates contractile force and shortening has not been definitive. To increase the "directness of measurement", in vitro motility assays and single-molecule optical techniques were created and used...
2014: Biophysical Reviews
Huihui Liu, Rui Chen, Jiyun Wang, Suming Chen, Caiqiao Xiong, Jianing Wang, Jian Hou, Qing He, Ning Zhang, Zongxiu Nie, Lanqun Mao
A sensitive analytical technique for visualizing small endogenous molecules simultaneously is of great significance for clearly elucidating metabolic mechanisms during pathological progression. In the present study, 1,5-naphthalenediamine (1,5-DAN) hydrochloride was prepared for matrix-assisted laser desorption/ionization (MALDI) mass spectrometry imaging (MSI) of small molecules in liver, brain, and kidneys from mice. Furthermore, 1,5-DAN hydrochloride assisted LDI MSI of small molecules in brain tissue of rats subjected to middle cerebral artery occlusion (MCAO) was carried out to investigate the altered metabolic pathways and mechanisms underlying the development of ischemic brain damage...
October 21, 2014: Analytical Chemistry
Anderson Capistrano, Aldir Cordeiro, Danilo Furquim Siqueira, Leopoldino Capelozza Filho, Mauricio de Almeida Cardoso, Renata Rodrigues de Almeida-Pedrin
INTRODUCTION: Orthodontics, just as any other science, has undergone advances in technology that aim at improving treatment efficacy with a view to reducing treatment time, providing patients with comfort, and achieving the expected, yet hardly attained long-term stability. The current advances in orthodontic technology seem to represent a period of transition between conventional brackets (with elastic modules) and self-ligating brackets systems. Scientific evidence does not always confirm the clear clinical advantages of the self-ligating system, particularly with regard to reduced time required for alignment and leveling (a relatively simple protocol), greater comfort for patients, and higher chances of performing treatment without extractions - even though the number of extractions is more closely related to patient's facial morphological pattern, regardless of the technique of choice...
May 2014: Dental Press Journal of Orthodontics
P M Hunn
Korea is an ancient land, with a proud history of civilisation stretching back 43 centuries. It is a very beautiful country and its Japanese name "Chosun" or "Land of the Morning Calm" conjures up pictures of the morning mist floating down the narrow, winding terraced valleys, the rugged peaks above clear in the crisp, brilliant morning light. But it is also a tragic country as much of its history is of war - between Korea and her powerful neighbours, China and Japan, or between China and Japan, with Korea merely the battlefield...
March 1974: Australian Journal of Physiotherapy
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